WIP XEP-0198: implement stream management

Stream management is enabled when server supports it. There is no option
to disable it.

.gitignore

@@ -34,8 +34,10 @@ examples/active
 examples/basic
 examples/bot
 examples/component
+examples/register
 examples/roster
 examples/uuid
+examples/vcard
 test_stamp
 test-suite.log
 tests/*.o
@@ -53,8 +55,9 @@ tests/test_sasl
 tests/test_scram
 tests/test_sha1
 tests/test_snprintf
-tests/test_string
 tests/test_sock
+tests/test_stanza
+tests/test_string
 m4/
 libstrophe.project
 libs/

.travis.yml

@@ -1,11 +1,15 @@
 language: c
 install:
     - sudo apt-get update
-    - sudo apt-get -y install libtool pkg-config libexpat1-dev libxml2-dev libssl-dev check
+    - sudo apt-get -y install libtool pkg-config libexpat1-dev libxml2-dev libssl-dev libc-ares-dev
-script:
+before_script:
     - ./bootstrap.sh
-    - ./configure --without-libxml2 && make CFLAGS="-Wall -Werror" && make CFLAGS="-Wall -Werror" check-TESTS
+script:
-    - make clean
+    - ./configure ${CONFIGURE_OPT} CFLAGS="-Werror" && make && make check
-    - ./configure --with-libxml2 && make CFLAGS="-Wall -Werror" && make CFLAGS="-Wall -Werror" check-TESTS
+env:
-    - make clean
+    - CONFIGURE_OPT="--without-libxml2"
-    - ./configure --disable-tls && make CFLAGS="-Wall -Werror" && make CFLAGS="-Wall -Werror" check-TESTS
+    - CONFIGURE_OPT="--with-libxml2"
+    - CONFIGURE_OPT="--disable-tls"
+    - CONFIGURE_OPT="--enable-cares"
+matrix:
+    fast_finish: true

ChangeLog

@@ -1,3 +1,43 @@
+0.10.0
+	- c-ares support
+	- LibreSSL support
+	- examples/register implements XEP-0077
+	- New API:
+		- xmpp_stanza_get_child_by_name_and_ns()
+		- xmpp_conn_is_connecting()
+		- xmpp_conn_is_connected()
+		- xmpp_conn_is_disconnected()
+		- xmpp_stanza_add_child_ex()
+		- xmpp_stanza_get_context()
+
+0.9.3
+	- PLAIN mechanism is used only when no other mechanisms are supported
+	- Legacy authentication is disabled by default, can be enabled with
+	  connection flag XMPP_CONN_FLAG_LEGACY_AUTH
+	- Session is not established if it is optional
+	- Fixed a bug causing a reused connection not to cleanup properly
+	- Improved debug logging in OpenSSL module
+	- Few memory leaks fixed
+
+0.9.2
+	- OpenSSL tls module verifies certificate by default. Set flag
+	  XMPP_CONN_FLAG_TRUST_TLS to ignore result of the verification
+	- Certificate hostname verification is forced for openssl-1.0.2 and
+	  newer
+	- OpenSSL tls module disables insecure SSLv2 SSLv3 and TLSv1
+	- Support of handlers with the same callback function, but different
+	  userdata
+	- System handlers are deleted on xmpp_conn_t reconnection. Old system
+	  handlers could cause problems
+	- Default timeout for xmpp_run() is increased from 1 millisecond to 1
+	  second in order to reduce CPU consumption
+	- Reduced memory usage in expat module
+	- New functions:
+		- xmpp_error_new()
+		- xmpp_send_error()
+		- xmpp_ctx_set_timeout()
+		- xmpp_sha1_digest()
+
 0.9.1
 	- Fixed bug #95 (DNS lookup failing on Cygwin)
 	- Removed dependency on the check package

Makefile.am

@@ -1,7 +1,6 @@
 AUTOMAKE_OPTIONS = subdir-objects
 
 ACLOCAL_AMFLAGS = -I m4
-AM_CFLAGS = -g -Wall
 
 PARSER_CFLAGS=@PARSER_CFLAGS@
 PARSER_LIBS=@PARSER_LIBS@
@@ -9,26 +8,56 @@ PARSER_LIBS=@PARSER_LIBS@
 SSL_CFLAGS = @openssl_CFLAGS@
 SSL_LIBS = @openssl_LIBS@
 
+RESOLV_CFLAGS = @RESOLV_CFLAGS@
 RESOLV_LIBS = @RESOLV_LIBS@
 
-STROPHE_FLAGS = -I$(top_srcdir)
+WARNING_FLAGS = @WARNING_FLAGS@
+STROPHE_FLAGS = -I$(top_srcdir) $(WARNING_FLAGS)
 STROPHE_LIBS = libstrophe.la
 
 ## Main build targets
 lib_LTLIBRARIES = libstrophe.la
 
-libstrophe_la_CFLAGS = $(SSL_CFLAGS) $(STROPHE_FLAGS) $(PARSER_CFLAGS)
+libstrophe_la_CFLAGS = $(SSL_CFLAGS) $(STROPHE_FLAGS) $(PARSER_CFLAGS) $(RESOLV_CFLAGS)
 libstrophe_la_LDFLAGS = $(SSL_LIBS) $(PARSER_LIBS) $(RESOLV_LIBS) -no-undefined
 # Export only public API
 libstrophe_la_LDFLAGS += -export-symbols-regex '^xmpp_'
-libstrophe_la_SOURCES = src/auth.c src/conn.c src/crypto.c src/ctx.c \
+
-	src/event.c src/handler.c src/hash.c src/jid.c src/md5.c \
+libstrophe_la_SOURCES = \
-	src/resolver.c src/sasl.c src/scram.c src/sha1.c \
+	src/auth.c \
-	src/snprintf.c src/sock.c src/stanza.c src/util.c \
+	src/conn.c \
-	src/rand.c src/uuid.c \
+	src/crypto.c \
-	src/common.h src/hash.h src/md5.h src/ostypes.h src/parser.h \
+	src/ctx.c \
-	src/resolver.h src/sasl.h src/scram.h src/sha1.h src/snprintf.h \
+	src/event.c \
-	src/sock.h src/tls.h src/util.h src/rand.h
+	src/handler.c \
+	src/hash.c \
+	src/jid.c \
+	src/md5.c \
+	src/rand.c \
+	src/resolver.c \
+	src/sasl.c \
+	src/scram.c \
+	src/sha1.c \
+	src/snprintf.c \
+	src/sock.c \
+	src/stanza.c \
+	src/util.c \
+	src/uuid.c
+libstrophe_la_SOURCES += \
+	src/common.h \
+	src/hash.h \
+	src/md5.h \
+	src/ostypes.h \
+	src/parser.h \
+	src/rand.h \
+	src/resolver.h \
+	src/sasl.h \
+	src/scram.h \
+	src/sha1.h \
+	src/snprintf.h \
+	src/sock.h \
+	src/tls.h \
+	src/util.h
 
 if DISABLE_TLS
 libstrophe_la_SOURCES += src/tls_dummy.c
@@ -47,19 +76,37 @@ noinst_HEADERS = strophepp.h
 
 pkgconfig_DATA = libstrophe.pc
 
-EXTRA_DIST = docs rpm Doxyfile LICENSE.txt GPL-LICENSE.txt MIT-LICENSE.txt \
+EXTRA_DIST = \
-	src/tls_dummy.c src/tls_gnutls.c src/tls_schannel.c \
+	Doxyfile \
-	examples/README.md
+	GPL-LICENSE.txt \
+	LICENSE.txt \
+	MIT-LICENSE.txt \
+	bootstrap.sh \
+	build-android.sh \
+	docs/footer.html \
+	examples/README.md \
+	jni/Android.mk \
+	jni/Application.mk \
+	rpm/README \
+	rpm/libstrophe.spec \
+	src/tls_gnutls.c \
+	src/tls_schannel.c \
+	tests/res_query_dump.c
 
 ## Examples
-noinst_PROGRAMS = examples/active examples/roster examples/basic examples/bot \
+noinst_PROGRAMS = \
-	examples/component examples/uuid
+	examples/active \
+	examples/basic \
+	examples/bot \
+	examples/component \
+	examples/roster \
+	examples/uuid \
+	examples/vcard \
+	examples/register
+
 examples_active_SOURCES = examples/active.c
 examples_active_CFLAGS = $(STROPHE_FLAGS)
 examples_active_LDADD = $(STROPHE_LIBS)
-examples_roster_SOURCES = examples/roster.c
-examples_roster_CFLAGS = $(STROPHE_FLAGS)
-examples_roster_LDADD = $(STROPHE_LIBS)
 examples_basic_SOURCES = examples/basic.c
 examples_basic_CFLAGS = $(STROPHE_FLAGS)
 examples_basic_LDADD = $(STROPHE_LIBS)
@@ -69,15 +116,36 @@ examples_bot_LDADD = $(STROPHE_LIBS)
 examples_component_SOURCES = examples/component.c
 examples_component_CFLAGS = $(STROPHE_FLAGS)
 examples_component_LDADD = $(STROPHE_LIBS)
+examples_roster_SOURCES = examples/roster.c
+examples_roster_CFLAGS = $(STROPHE_FLAGS)
+examples_roster_LDADD = $(STROPHE_LIBS)
 examples_uuid_SOURCES = examples/uuid.c
 examples_uuid_CFLAGS = $(STROPHE_FLAGS)
 examples_uuid_LDADD = $(STROPHE_LIBS)
+examples_vcard_SOURCES = examples/vcard.c
+examples_vcard_CFLAGS = $(STROPHE_FLAGS)
+examples_vcard_LDADD = $(STROPHE_LIBS)
+examples_register_SOURCES = examples/register.c
+examples_register_CFLAGS = $(STROPHE_FLAGS)
+examples_register_LDADD = $(STROPHE_LIBS)
 
 
 ## Tests
-TESTS = tests/check_parser tests/test_sha1 tests/test_md5 tests/test_rand \
+TESTS = \
-	tests/test_scram tests/test_ctx tests/test_base64 tests/test_jid \
+	tests/check_parser \
-	tests/test_snprintf tests/test_string tests/test_resolver
+	tests/test_sha1 \
+	tests/test_md5 \
+	tests/test_rand \
+	tests/test_scram \
+	tests/test_ctx \
+	tests/test_base64 \
+	tests/test_hash \
+	tests/test_jid \
+	tests/test_snprintf \
+	tests/test_string \
+	tests/test_stanza \
+	tests/test_resolver
+
 check_PROGRAMS = $(TESTS)
 
 tests_check_parser_SOURCES = tests/check_parser.c tests/test.h
@@ -96,6 +164,11 @@ tests_test_base64_CFLAGS = $(STROPHE_FLAGS) -I$(top_srcdir)/src
 tests_test_base64_LDADD = $(STROPHE_LIBS)
 tests_test_base64_LDFLAGS = -static
 
+tests_test_hash_SOURCES = tests/test_hash.c
+tests_test_hash_CFLAGS = $(STROPHE_FLAGS) -I$(top_srcdir)/src
+tests_test_hash_LDADD = $(STROPHE_LIBS)
+tests_test_hash_LDFLAGS = -static
+
 tests_test_jid_SOURCES = tests/test_jid.c
 tests_test_jid_CFLAGS = $(STROPHE_FLAGS) -I$(top_srcdir)/src
 tests_test_jid_LDADD = $(STROPHE_LIBS)
@@ -125,3 +198,8 @@ tests_test_string_SOURCES = tests/test_string.c tests/test.h
 tests_test_string_CFLAGS = $(STROPHE_FLAGS) -I$(top_srcdir)/src
 tests_test_string_LDADD = $(STROPHE_LIBS)
 tests_test_string_LDFLAGS = -static
+
+tests_test_stanza_SOURCES = tests/test_stanza.c
+tests_test_stanza_CFLAGS = $(STROPHE_FLAGS)
+tests_test_stanza_LDADD = $(STROPHE_LIBS)
+tests_test_stanza_LDFLAGS = -static

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([libstrophe], [0.9.1], [jack@metajack.im])
+AC_INIT([libstrophe], [0.9.3], [jack@metajack.im])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([foreign])
 LT_INIT([dlopen])
@@ -15,12 +15,24 @@ AS_CASE([$host_os],
     [*nto*|*qnx*], [PLATFORM="qnx"],
     [*solaris*],   [PLATFORM="solaris"],
     [*android*],   [PLATFORM="android"],
+    [*haiku*],     [PLATFORM="haiku"],
                    [PLATFORM="nix"])
 
+WARNING_FLAGS="-Wall"
+
+AS_CASE([$PLATFORM],
+    [haiku],   [],
+               [WARNING_FLAGS="$WARNING_FLAGS -Wextra -Wno-unused-parameter"])
+
 AC_ARG_WITH([libxml2],
     [AS_HELP_STRING([--with-libxml2], [use libxml2 for XML parsing, expat is the default])])
 AC_ARG_ENABLE([tls],
     [AS_HELP_STRING([--disable-tls], [disable TLS support])])
+AC_ARG_ENABLE([cares],
+    [AS_HELP_STRING([--enable-cares], [use c-ares for DNS resolution])])
+
+AC_SEARCH_LIBS([socket], [network socket])
+#AC_CHECK_FUNCS([snprintf vsnprintf])
 
 if test "x$enable_tls" != xno; then
     PKG_CHECK_MODULES([openssl], [openssl],
@@ -62,7 +74,7 @@ if test "x$with_libxml2" != xno -a "x$with_parser" = x; then
                 [
                     with_parser="libxml2"
                     libxml2_CFLAGS="-I${includedir}/libxml2"
-                    libxml2_LIBS="-lxml2"
+                    libxml2_LIBS="-lxml2 -lm"
                     PC_LIBS="${libxml2_LIBS} ${PC_LIBS}"
                     PC_CFLAGS="${libxml2_CFLAGS} ${PC_CFLAGS}"
                 ])
@@ -82,13 +94,24 @@ fi
 
 AC_MSG_NOTICE([libstrophe will use the $with_parser XML parser])
 
-AC_SEARCH_LIBS([socket], [socket])
+if test "x$enable_cares" = xyes; then
+    PKG_CHECK_MODULES([libcares], [libcares >= 1.7.0],
+        [
+            PC_REQUIRES="libcares ${PC_REQUIRES}"
+            RESOLV_CFLAGS=$libcares_CFLAGS
+            RESOLV_LIBS=$libcares_LIBS
+            AC_DEFINE([HAVE_CARES])
+        ],
+        [AC_MSG_ERROR([libcares not found])])
+        # TODO: if pkg-config doesn't find, check the library manually
+else
 
 AS_CASE([$PLATFORM],
     [bsd],     [RESOLV_LIBS=""],
     [qnx],     [RESOLV_LIBS="-lsocket"],
     [solaris], [RESOLV_LIBS="-lresolv -lsocket -lnsl"],
     [android], [RESOLV_LIBS=""],
+    [haiku],   [RESOLV_LIBS="-lnetwork"],
                [RESOLV_LIBS="-lresolv"])
 
 LIBS_TMP="${LIBS}"
@@ -110,6 +133,8 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([
 LIBS="${LIBS_TMP}"
 PC_LIBS="${RESOLV_LIBS} ${PC_LIBS}"
 
+fi
+
 m4_ifdef([PKG_INSTALLDIR], [PKG_INSTALLDIR],
     [AC_ARG_WITH([pkgconfigdir],
         [AS_HELP_STRING([--with-pkgconfigdir],
@@ -126,6 +151,8 @@ AC_SUBST([PC_LIBS], [${PC_LIBS}])
 
 AC_SUBST(PARSER_CFLAGS)
 AC_SUBST(PARSER_LIBS)
+AC_SUBST(RESOLV_CFLAGS)
 AC_SUBST(RESOLV_LIBS)
+AC_SUBST(WARNING_FLAGS)
 AC_CONFIG_FILES([Makefile libstrophe.pc])
 AC_OUTPUT

examples/active.c

@@ -55,10 +55,7 @@ void conn_handler(xmpp_conn_t * const conn, const xmpp_conn_event_t status,
 	fprintf(stderr, "DEBUG: connected\n");
 	
 	/* create iq stanza for request */
-	iq = xmpp_stanza_new(ctx);
+	iq = xmpp_iq_new(ctx, "get", "active1");
-	xmpp_stanza_set_name(iq, "iq");
-	xmpp_stanza_set_type(iq, "get");
-	xmpp_stanza_set_id(iq, "active1");
 	xmpp_stanza_set_to(iq, "xxxxxxxxx.com");
 
 	query = xmpp_stanza_new(ctx);

examples/bot.c

@@ -73,15 +73,19 @@ int version_handler(xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void
 int message_handler(xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void * const userdata)
 {
     xmpp_ctx_t *ctx = (xmpp_ctx_t*)userdata;
-    xmpp_stanza_t *reply;
+    xmpp_stanza_t *body, *reply;
+    const char *type;
     char *intext, *replytext;
+    int quit = 0;
 
-    if (!xmpp_stanza_get_child_by_name(stanza, "body"))
+    body = xmpp_stanza_get_child_by_name(stanza, "body");
+    if (body == NULL)
         return 1;
-    if (xmpp_stanza_get_type(stanza) != NULL && !strcmp(xmpp_stanza_get_type(stanza), "error"))
+    type = xmpp_stanza_get_type(stanza);
+    if (type != NULL && strcmp(type, "error") == 0)
         return 1;
 
-    intext = xmpp_stanza_get_text(xmpp_stanza_get_child_by_name(stanza, "body"));
+    intext = xmpp_stanza_get_text(body);
 
     printf("Incoming message from %s: %s\n", xmpp_stanza_get_from(stanza), intext);
 
@@ -89,15 +93,24 @@ int message_handler(xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void
     if (xmpp_stanza_get_type(reply) == NULL)
         xmpp_stanza_set_type(reply, "chat");
 
+    if (strcmp(intext, "quit") == 0) {
+        replytext = strdup("bye!");
+        quit = 1;
+    } else {
         replytext = (char *) malloc(strlen(" to you too!") + strlen(intext) + 1);
         strcpy(replytext, intext);
         strcat(replytext, " to you too!");
+    }
     xmpp_free(ctx, intext);
     xmpp_message_set_body(reply, replytext);
 
     xmpp_send(conn, reply);
     xmpp_stanza_release(reply);
     free(replytext);
+
+    if (quit)
+        xmpp_disconnect(conn);
+
     return 1;
 }
 

examples/register.c

@@ -0,0 +1,357 @@
+/* register.c
+ * strophe XMPP client library -- In-band registration (XEP-0077)
+ *
+ * Copyright (C) 2020 Dmitry Podgorny <pasis.ua@gmail.com>
+ *
+ *  This software is provided AS-IS with no warranty, either express
+ *  or implied.
+ *
+ *  This program is dual licensed under the MIT and GPLv3 licenses.
+ */
+
+/*
+ * This example uses a "raw" connection to establish connection to a server
+ * without account. Then it queries server to register new account according
+ * to XEP-0077.
+ *
+ * How to use it. After the application connects and receives instructions
+ * from the server, user will be prompted to type information such as
+ * username, password, etc. Press enter without typing if you want to skip
+ * a field and not to send it to the server.
+ *
+ * Notice, the example doesn't implement forms. Therefore, it won't work
+ * in complicated scenarios.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <strophe.h>
+
+typedef struct {
+    xmpp_ctx_t *ctx;
+    const char *jid;
+} xmpp_reg_t;
+
+#define FEATURES_TIMEOUT 5000 /* 5 seconds */
+
+static void iq_reg_send_form(xmpp_reg_t *reg,
+                             xmpp_conn_t *conn,
+                             xmpp_stanza_t *stanza)
+{
+    xmpp_ctx_t *ctx = reg->ctx;
+    xmpp_stanza_t *query;
+    xmpp_stanza_t *next;
+    xmpp_stanza_t *elem;
+    xmpp_stanza_t *text;
+    xmpp_stanza_t *iq;
+    const char *name;
+    ssize_t rc;
+    size_t size;
+    char *s;
+
+    query = xmpp_stanza_get_child_by_name(stanza, "query");
+    if (!query) {
+        xmpp_disconnect(conn);
+        return;
+    }
+
+    next = xmpp_stanza_get_children(query);
+    query = xmpp_stanza_new(ctx);
+    xmpp_stanza_set_name(query, "query");
+    xmpp_stanza_set_ns(query, XMPP_NS_REGISTER);
+    while (next) {
+        name = xmpp_stanza_get_name(next);
+        if (name && strcmp(name, "instructions") == 0) {
+            s = xmpp_stanza_get_text(next);
+            printf("instructions: %s\n", s);
+            xmpp_free(ctx, s);
+        } else {
+            printf("%s: ", name);
+            s = NULL;
+            size = 0;
+            rc = getline(&s, &size, stdin);
+            if (rc > 0 && s[rc - 1] == '\n')
+                s[rc - 1] = '\0';
+            if (rc > 0 && strlen(s) > 0) {
+                elem = xmpp_stanza_new(ctx);
+                text = xmpp_stanza_new(ctx);
+                xmpp_stanza_set_text(text, s);
+                xmpp_stanza_set_name(elem, name);
+                xmpp_stanza_add_child(elem, text);
+                xmpp_stanza_add_child(query, elem);
+                xmpp_stanza_release(text);
+                xmpp_stanza_release(elem);
+            }
+            free(s);
+        }
+        next = xmpp_stanza_get_next(next);
+    }
+
+    if (xmpp_stanza_get_children(query) == NULL) {
+        fprintf(stderr, "DEBUG: nothing to send\n");
+        xmpp_disconnect(conn);
+    } else {
+        iq = xmpp_iq_new(ctx, "set", "reg2");
+        xmpp_stanza_add_child(iq, query);
+        xmpp_stanza_release(query);
+        xmpp_send(conn, iq);
+        xmpp_stanza_release(iq);
+    }
+}
+
+static int iq_reg2_cb(xmpp_conn_t * const conn,
+                      xmpp_stanza_t * const stanza,
+                      void * const userdata)
+{
+    const char *type;
+
+    type = xmpp_stanza_get_type(stanza);
+    if (!type || strcmp(type, "error") == 0) {
+        fprintf(stderr, "DEBUG: error during registration\n");
+        goto quit;
+    }
+
+    if (strcmp(type, "result") != 0) {
+        fprintf(stderr, "DEBUG: expected type 'result', but got %s\n", type);
+        goto quit;
+    }
+
+    fprintf(stderr, "DEBUG: successful registration\n");
+
+quit:
+    xmpp_disconnect(conn);
+
+    return 0;
+}
+
+static int iq_reg_cb(xmpp_conn_t * const conn,
+                     xmpp_stanza_t * const stanza,
+                     void * const userdata)
+{
+    xmpp_reg_t *reg = (xmpp_reg_t *)userdata;
+    xmpp_stanza_t *registered = NULL;
+    xmpp_stanza_t *query;
+    const char *type;
+
+    type = xmpp_stanza_get_type(stanza);
+    if (!type || strcmp(type, "error") == 0) {
+        fprintf(stderr, "DEBUG: error during registration\n");
+        xmpp_disconnect(conn);
+        goto quit;
+    }
+
+    if (strcmp(type, "result") != 0) {
+        fprintf(stderr, "DEBUG: expected type 'result', but got %s\n", type);
+        xmpp_disconnect(conn);
+        goto quit;
+    }
+
+    query = xmpp_stanza_get_child_by_name(stanza, "query");
+    if (query)
+        registered = xmpp_stanza_get_child_by_name(query, "registered");
+    if (registered != NULL) {
+        fprintf(stderr, "DEBUG: already registered\n");
+        xmpp_disconnect(conn);
+        goto quit;
+    }
+    xmpp_id_handler_add(conn, iq_reg2_cb, "reg2", reg);
+    iq_reg_send_form(reg, conn, stanza);
+
+quit:
+    return 0;
+}
+
+static int _handle_error(xmpp_conn_t * const conn,
+                         xmpp_stanza_t * const stanza,
+                         void * const userdata)
+{
+    fprintf(stderr, "DEBUG: received stream error\n");
+    xmpp_disconnect(conn);
+
+    return 0;
+}
+
+static int _handle_proceedtls_default(xmpp_conn_t * const conn,
+                                      xmpp_stanza_t * const stanza,
+                                      void * const userdata)
+{
+    const char *name = xmpp_stanza_get_name(stanza);
+
+    if (strcmp(name, "proceed") == 0) {
+        fprintf(stderr, "DEBUG: proceeding with TLS\n");
+        if (xmpp_conn_tls_start(conn) == 0) {
+            xmpp_handler_delete(conn, _handle_error);
+            xmpp_conn_open_stream_default(conn);
+        } else {
+            fprintf(stderr, "DEBUG: TLS failed\n");
+            /* failed tls spoils the connection, so disconnect */
+            xmpp_disconnect(conn);
+        }
+    }
+    return 0;
+}
+
+static int _handle_missing_features(xmpp_conn_t * const conn,
+                                    void * const userdata)
+{
+    fprintf(stderr, "DEBUG: timeout\n");
+    xmpp_disconnect(conn);
+
+    return 0;
+}
+
+static int _handle_features(xmpp_conn_t * const conn,
+                            xmpp_stanza_t * const stanza,
+                            void * const userdata)
+{
+    xmpp_reg_t *reg = (xmpp_reg_t *)userdata;
+    xmpp_ctx_t *ctx = reg->ctx;
+    xmpp_stanza_t *child;
+    xmpp_stanza_t *iq;
+    char *domain;
+
+    xmpp_timed_handler_delete(conn, _handle_missing_features);
+
+    /* secure connection if possible */
+    child = xmpp_stanza_get_child_by_name(stanza, "starttls");
+    if (child && (strcmp(xmpp_stanza_get_ns(child), XMPP_NS_TLS) == 0)) {
+        fprintf(stderr, "DEBUG: server supports TLS, try to establish\n");
+        child = xmpp_stanza_new(ctx);
+        xmpp_stanza_set_name(child, "starttls");
+        xmpp_stanza_set_ns(child, XMPP_NS_TLS);
+        xmpp_handler_add(conn, _handle_proceedtls_default,
+                         XMPP_NS_TLS, NULL, NULL, NULL);
+        xmpp_send(conn, child);
+        xmpp_stanza_release(child);
+        return 0;
+    }
+
+    /* check whether server supports in-band registration */
+    child = xmpp_stanza_get_child_by_name(stanza, "register");
+    if (child && strcmp(xmpp_stanza_get_ns(child), XMPP_NS_REGISTER) == 0) {
+        fprintf(stderr, "DEBUG: server doesn't support in-band registration\n");
+        xmpp_disconnect(conn);
+        return 0;
+    }
+
+    fprintf(stderr, "DEBUG: server supports in-band registration\n");
+    domain = xmpp_jid_domain(ctx, reg->jid);
+    iq = xmpp_iq_new(ctx, "get", "reg1");
+    xmpp_stanza_set_to(iq, domain);
+    child = xmpp_stanza_new(ctx);
+    xmpp_stanza_set_name(child, "query");
+    xmpp_stanza_set_ns(child, XMPP_NS_REGISTER);
+    xmpp_stanza_add_child(iq, child);
+
+    xmpp_handler_add(conn, iq_reg_cb, XMPP_NS_REGISTER, "iq", NULL, reg);
+    xmpp_send(conn, iq);
+
+    xmpp_free(ctx, domain);
+    xmpp_stanza_release(child);
+    xmpp_stanza_release(iq);
+
+    return 0;
+}
+
+static void conn_handler(xmpp_conn_t * const conn,
+                         const xmpp_conn_event_t status,
+                         const int error,
+                         xmpp_stream_error_t * const stream_error,
+                         void * const userdata)
+{
+    xmpp_reg_t *reg = (xmpp_reg_t *)userdata;
+    int secured;
+
+    if (status == XMPP_CONN_RAW_CONNECT) {
+        fprintf(stderr, "DEBUG: raw connection established\n");
+        xmpp_conn_open_stream_default(conn);
+    } else if (status == XMPP_CONN_CONNECT) {
+        fprintf(stderr, "DEBUG: stream opened\n");
+        secured = xmpp_conn_is_secured(conn);
+        fprintf(stderr, "DEBUG: connection is %s.\n",
+                secured ? "secured" : "NOT secured");
+
+        /* setup handler for stream:error */
+        xmpp_handler_add(conn, _handle_error, XMPP_NS_STREAMS,
+                         "error", NULL, NULL);
+
+        /* setup handlers for incoming <stream:features> */
+        xmpp_handler_add(conn, _handle_features, XMPP_NS_STREAMS,
+                         "features", NULL, reg);
+        xmpp_timed_handler_add(conn, _handle_missing_features,
+                               FEATURES_TIMEOUT, NULL);
+    } else {
+        fprintf(stderr, "DEBUG: disconnected\n");
+        xmpp_stop(reg->ctx);
+    }
+}
+
+xmpp_reg_t *xmpp_reg_new(void)
+{
+    xmpp_reg_t *reg;
+
+    reg = malloc(sizeof(*reg));
+    if (reg != NULL) {
+        memset(reg, 0, sizeof(*reg));
+    }
+    return reg;
+}
+
+void xmpp_reg_release(xmpp_reg_t *reg)
+{
+    free(reg);
+}
+
+int main(int argc, char **argv)
+{
+    xmpp_ctx_t *ctx;
+    xmpp_conn_t *conn;
+    xmpp_log_t *log;
+    xmpp_reg_t *reg;
+    const char *jid;
+    const char *host = NULL;
+    char *domain;
+
+    if (argc < 2 || argc > 3) {
+        fprintf(stderr, "Usage: %s <jid> [<host>]\n", argv[0]);
+        return 1;
+    }
+
+    jid = argv[1];
+    if (argc > 2)
+        host = argv[2];
+
+    /*
+     * Note, this example doesn't handle errors. Applications should check
+     * return values of non-void functions.
+     */
+
+    xmpp_initialize();
+    log = xmpp_get_default_logger(XMPP_LEVEL_DEBUG);
+    ctx = xmpp_ctx_new(NULL, log);
+    conn = xmpp_conn_new(ctx);
+
+    /* jid can be a jid or domain for "raw" connection */
+    domain = xmpp_jid_domain(ctx, jid);
+    xmpp_conn_set_jid(conn, domain);
+    xmpp_free(ctx, domain);
+
+    /* private data */
+    reg = xmpp_reg_new();
+    reg->ctx = ctx;
+    reg->jid = jid;
+
+    xmpp_connect_raw(conn, host, 0, conn_handler, reg);
+    xmpp_run(ctx);
+
+    /* release private data */
+    xmpp_reg_release(reg);
+
+    xmpp_conn_release(conn);
+    xmpp_ctx_free(ctx);
+    xmpp_shutdown();
+
+    return 0;
+}

examples/roster.c

@@ -62,10 +62,7 @@ void conn_handler(xmpp_conn_t * const conn, const xmpp_conn_event_t status,
 	fprintf(stderr, "DEBUG: connected\n");
 	
 	/* create iq stanza for request */
-	iq = xmpp_stanza_new(ctx);
+	iq = xmpp_iq_new(ctx, "get", "roster1");
-	xmpp_stanza_set_name(iq, "iq");
-	xmpp_stanza_set_type(iq, "get");
-	xmpp_stanza_set_id(iq, "roster1");
 
 	query = xmpp_stanza_new(ctx);
 	xmpp_stanza_set_name(query, "query");

examples/vcard.c

@@ -0,0 +1,284 @@
+/* vcard.c
+ * strophe XMPP client library -- vCard example
+ *
+ * Copyright (C) 2016 Dmitry Podgorny <pasis.ua@gmail.com>
+ *
+ *  This software is provided AS-IS with no warranty, either express
+ *  or implied.
+ *
+ *  This program is dual licensed under the MIT and GPLv3 licenses.
+ */
+
+#include <assert.h>
+#include <libgen.h> /* basename */
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strophe.h>
+
+typedef struct {
+    xmpp_ctx_t *ctx;
+    const char *recipient;
+    const char *img_path;
+} vcard_t;
+
+typedef void (*vcard_cb_t)(vcard_t *, xmpp_stanza_t *);
+
+#define REQ_TIMEOUT 5000
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+static void vcard_photo(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    xmpp_stanza_t *tmp;
+    char *s;
+    char *tok;
+    char *saveptr = NULL;
+    char *copy;
+    unsigned char *img;
+    size_t img_size;
+    size_t written;
+    FILE *fd;
+
+    tmp = xmpp_stanza_get_child_by_name(stanza, "TYPE");
+    assert(tmp != NULL);
+    s = xmpp_stanza_get_text(tmp);
+    assert(s != NULL);
+    printf("PHOTO: %s, saving to file %s\n", s, vc->img_path);
+    xmpp_free(vc->ctx, s);
+
+    tmp = xmpp_stanza_get_child_by_name(stanza, "BINVAL");
+    assert(tmp != NULL);
+    s = xmpp_stanza_get_text(tmp);
+    assert(s != NULL);
+
+    /* remove \n and \r */
+    copy = (char *)malloc(strlen(s) + 1);
+    assert(copy != NULL);
+    copy[0] = '\0';
+    tok = strtok_r(s, "\n\r", &saveptr);
+    while (tok != NULL) {
+        strcat(copy, tok);
+        tok = strtok_r(NULL, "\n\r", &saveptr);
+    }
+
+    xmpp_base64_decode_bin(vc->ctx, copy, strlen(copy), &img, &img_size);
+    assert(img != NULL);
+
+    fd = fopen(vc->img_path, "w");
+    assert(fd != NULL);
+    written = fwrite(img, 1, img_size, fd);
+    if (written < img_size)
+        printf("Saving photo failed\n");
+    fclose(fd);
+
+    free(copy);
+    xmpp_free(vc->ctx, s);
+    xmpp_free(vc->ctx, img);
+}
+
+static void vcard_print_string(vcard_t *vc, xmpp_stanza_t *stanza,
+                               const char *info)
+{
+    char *s = xmpp_stanza_get_text(stanza);
+
+    assert(s != NULL);
+    printf("%s: %s\n", info, s);
+    xmpp_free(vc->ctx, s);
+}
+
+static void vcard_bday(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    vcard_print_string(vc, stanza, "Birthday");
+}
+
+static void vcard_desc(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    vcard_print_string(vc, stanza, "Description");
+}
+
+static void vcard_email(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    xmpp_stanza_t *userid = xmpp_stanza_get_child_by_name(stanza, "USERID");
+
+    if (userid != NULL)
+        vcard_print_string(vc, userid, "E-mail");
+}
+
+static void vcard_fn(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    vcard_print_string(vc, stanza, "Full name");
+}
+
+static void vcard_name(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    xmpp_stanza_t *name = xmpp_stanza_get_child_by_name(stanza, "GIVEN");
+    xmpp_stanza_t *family = xmpp_stanza_get_child_by_name(stanza, "FAMILY");
+
+    if (name != NULL)
+        vcard_print_string(vc, name, "Given name");
+    if (family != NULL)
+        vcard_print_string(vc, family, "Family name");
+}
+
+static void vcard_nick(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    vcard_print_string(vc, stanza, "Nickname");
+}
+
+static void vcard_url(vcard_t *vc, xmpp_stanza_t *stanza)
+{
+    vcard_print_string(vc, stanza, "URL");
+}
+
+static vcard_cb_t vcard_cb_get(xmpp_stanza_t *stanza)
+{
+    vcard_cb_t cb = NULL;
+    const char *tag;
+    size_t i;
+
+    static struct {
+        const char *tag;
+        vcard_cb_t cb;
+    } vcard_tbl[] = {
+        { "PHOTO", vcard_photo },
+        { "BDAY", vcard_bday },
+        { "DESC", vcard_desc },
+        { "EMAIL", vcard_email },
+        { "FN", vcard_fn },
+        { "N", vcard_name },
+        { "NICKNAME", vcard_nick },
+        { "URL", vcard_url },
+    };
+
+    tag = xmpp_stanza_get_name(stanza);
+    if (tag == NULL)
+        goto exit;
+
+    for (i = 0; i < ARRAY_SIZE(vcard_tbl); ++i) {
+        if (strcmp(tag, vcard_tbl[i].tag) == 0) {
+            cb = vcard_tbl[i].cb;
+            break;
+        }
+    }
+
+exit:
+    return cb;
+}
+
+static int timedout(xmpp_conn_t * const conn, void * const userdata)
+{
+    fprintf(stderr, "Timeout reached.\n");
+    xmpp_disconnect(conn);
+
+    return 0;
+}
+
+static int recv_vcard(xmpp_conn_t * const conn, xmpp_stanza_t * const stanza,
+                      void * const userdata)
+{
+    vcard_t *vc = userdata;
+    vcard_cb_t cb;
+    xmpp_stanza_t *child;
+    char *s;
+    size_t s_size;
+    int rc;
+
+    printf("Received vCard.\n\n");
+
+    child = xmpp_stanza_get_child_by_name(stanza, "error");
+    if (child != NULL) {
+        rc = xmpp_stanza_to_text(child, &s, &s_size);
+        assert(rc == XMPP_EOK);
+        printf("Error returned: %s.\n", s);
+        xmpp_free(vc->ctx, s);
+        goto exit;
+    }
+
+    child = xmpp_stanza_get_child_by_name(stanza, "vCard");
+    assert(child != NULL);
+    child = xmpp_stanza_get_children(child);
+    while (child != NULL) {
+        cb = vcard_cb_get(child);
+        if (cb != NULL)
+            cb(vc, child);
+        child = xmpp_stanza_get_next(child);
+    }
+
+exit:
+    xmpp_disconnect(conn);
+
+    return 0;
+}
+
+static void send_vcard_req(xmpp_conn_t *conn, const char *to, const char *id)
+{
+    printf("Requesting vCard from %s.\n", to);
+    xmpp_send_raw_string(conn, "<iq from='%s' to='%s' type='get' id='%s'>"
+                               "<vCard xmlns='vcard-temp'/></iq>",
+                               xmpp_conn_get_bound_jid(conn), to, id);
+}
+
+static void conn_handler(xmpp_conn_t * const conn,
+                         const xmpp_conn_event_t status,
+                         const int error,
+                         xmpp_stream_error_t * const stream_error,
+                         void * const userdata)
+{
+    vcard_t *vc = userdata;
+
+    if (status == XMPP_CONN_CONNECT) {
+        send_vcard_req(conn, vc->recipient, "vc1");
+        xmpp_id_handler_add(conn, recv_vcard, "vc1", vc);
+        xmpp_timed_handler_add(conn, timedout, REQ_TIMEOUT, NULL);
+    } else {
+        if (error != 0)
+            fprintf(stderr, "Disconnected with error=%d.\n", error);
+        if (stream_error != NULL)
+            fprintf(stderr, "Stream error type=%d text=%s.\n",
+                            stream_error->type, stream_error->text);
+        xmpp_stop(vc->ctx);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    xmpp_log_t  *log;
+    xmpp_ctx_t  *ctx;
+    xmpp_conn_t *conn;
+    const char  *jid;
+    const char  *pass;
+    char        *prog;
+    vcard_t      vcard;
+
+    if (argc < 4 || argc > 5) {
+        prog = argc > 0 ? strdup(argv[0]) : NULL;
+        printf("Usage: %s <login-jid> <password> <recipient-jid> "
+               "[image-file]\n\n", prog == NULL ? "vcard" : basename(prog));
+        printf("If vCard contains a photo it will be stored to "
+               "image-file. If you don't provide the image-file "
+               "default filename will be generated.\n");
+        free(prog);
+        return 1;
+    }
+
+    jid = argv[1];
+    pass = argv[2];
+    vcard.recipient = argv[3];
+    vcard.img_path = argc > 4 ? argv[4] : "vcard.jpg";
+
+    xmpp_initialize();
+    log = xmpp_get_default_logger(XMPP_LEVEL_INFO);
+    ctx = xmpp_ctx_new(NULL, log);
+    conn = xmpp_conn_new(ctx);
+    xmpp_conn_set_jid(conn, jid);
+    xmpp_conn_set_pass(conn, pass);
+    vcard.ctx = ctx;
+    xmpp_connect_client(conn, NULL, 0, conn_handler, &vcard);
+    xmpp_run(ctx);
+    xmpp_conn_release(conn);
+    xmpp_ctx_free(ctx);
+    xmpp_shutdown();
+
+    return 0;
+}
+

jni/Android.mk

@@ -62,7 +62,7 @@ include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := libexpat
-LOCAL_CFLAGS := -DHAVE_MEMMOVE
+LOCAL_CFLAGS := -DHAVE_MEMMOVE -DXML_DEV_URANDOM
 #LOCAL_C_INCLUDES := \
 #	$(LOCAL_PATH)/expat
 

jni/Application.mk

@@ -1,2 +1,2 @@
-APP_ABI := armeabi armeabi-v7a mips x86
+APP_ABI := armeabi-v7a arm64-v8a
 APP_PLATFORM := android-19

rpm/README

@@ -1,6 +1,6 @@
 1. Setup
 
-yum install gcc make expat-devel libstrophe
+yum install gcc make autoconf automake expat-devel openssl-devel
 
 Fedora:
 

rpm/libstrophe.spec

@@ -8,10 +8,12 @@ License:	MIT/GPLv3
 URL:		http://strophe.im/libstrophe/
 Source0:	libstrophe_git.tar.gz
 
+BuildRequires:	autoconf
 BuildRequires:	automake
 BuildRequires:	libtool
 BuildRequires:	openssl-devel
 BuildRequires:	expat-devel
+Requires:	openssl
 Requires:	expat
 
 %description

src/auth.c

@@ -24,7 +24,7 @@
 #include "rand.h"
 
 #ifdef _MSC_VER
-#define strcasecmp stricmp
+#define strcasecmp _stricmp
 #endif
 
 /* TODO: these should configurable at runtime on a per connection basis  */
@@ -61,18 +61,15 @@
 #endif
 
 static void _auth(xmpp_conn_t * const conn);
+static void _auth_legacy(xmpp_conn_t *conn);
 static void _handle_open_sasl(xmpp_conn_t * const conn);
+static void _handle_open_tls(xmpp_conn_t * const conn);
 
 static int _handle_component_auth(xmpp_conn_t * const conn);
 static int _handle_component_hs_response(xmpp_conn_t * const conn,
             xmpp_stanza_t * const stanza,
             void * const userdata);
 
-static int _handle_missing_legacy(xmpp_conn_t * const conn,
-				  void * const userdata);
-static int _handle_legacy(xmpp_conn_t * const conn,
-			  xmpp_stanza_t * const stanza,
-			  void * const userdata);
 static int _handle_features_sasl(xmpp_conn_t * const conn,
 				 xmpp_stanza_t * const stanza,
 				 void * const userdata);
@@ -102,6 +99,9 @@ static int _handle_session(xmpp_conn_t * const conn,
 			   void * const userdata);
 static int _handle_missing_session(xmpp_conn_t * const conn,
 				   void * const userdata);
+static int _handle_sm(xmpp_conn_t * const conn,
+                      xmpp_stanza_t * const stanza,
+                      void * const userdata);
 static int _handle_missing_handshake(xmpp_conn_t * const conn,
                                      void * const userdata);
 
@@ -218,6 +218,7 @@ static int _handle_features(xmpp_conn_t * const conn,
 			    void * const userdata)
 {
     xmpp_stanza_t *child, *mech;
+    const char *ns;
     char *text;
 
     /* remove the handler that detects missing stream:features */
@@ -227,8 +228,10 @@ static int _handle_features(xmpp_conn_t * const conn,
     if (!conn->secured) {
         if (!conn->tls_disabled) {
             child = xmpp_stanza_get_child_by_name(stanza, "starttls");
-            if (child && (strcmp(xmpp_stanza_get_ns(child), XMPP_NS_TLS) == 0))
+            if (child) {
-                conn->tls_support = 1;
+                ns = xmpp_stanza_get_ns(child);
+                conn->tls_support = ns != NULL && strcmp(ns, XMPP_NS_TLS) == 0;
+            }
         } else {
             conn->tls_support = 0;
         }
@@ -236,11 +239,15 @@ static int _handle_features(xmpp_conn_t * const conn,
 
     /* check for SASL */
     child = xmpp_stanza_get_child_by_name(stanza, "mechanisms");
-    if (child && (strcmp(xmpp_stanza_get_ns(child), XMPP_NS_SASL) == 0)) {
+    ns = child ? xmpp_stanza_get_ns(child) : NULL;
+    if (child && ns && strcmp(ns, XMPP_NS_SASL) == 0) {
 	for (mech = xmpp_stanza_get_children(child); mech;
 	     mech = xmpp_stanza_get_next(mech)) {
 	    if (xmpp_stanza_get_name(mech) && strcmp(xmpp_stanza_get_name(mech), "mechanism") == 0) {
 		text = xmpp_stanza_get_text(mech);
+                if (text == NULL)
+                    continue;
+
 		if (strcasecmp(text, "PLAIN") == 0)
 		    conn->sasl_support |= SASL_MASK_PLAIN;
 		else if (strcasecmp(text, "DIGEST-MD5") == 0)
@@ -255,6 +262,10 @@ static int _handle_features(xmpp_conn_t * const conn,
 	}
     }
 
+    /* Disable PLAIN when other secure mechanisms are supported */
+    if (conn->sasl_support & ~(SASL_MASK_PLAIN | SASL_MASK_ANONYMOUS))
+        conn->sasl_support &= ~SASL_MASK_PLAIN;
+
     _auth(conn);
 
     return 0;
@@ -288,7 +299,7 @@ static int _handle_proceedtls_default(xmpp_conn_t * const conn,
         xmpp_debug(conn->ctx, "xmpp", "proceeding with TLS");
 
         if (conn_tls_start(conn) == 0) {
-            conn_prepare_reset(conn, auth_handle_open);
+            conn_prepare_reset(conn, _handle_open_tls);
             conn_open_stream(conn);
         } else {
             /* failed tls spoils the connection, so disconnect */
@@ -315,7 +326,7 @@ static int _handle_sasl_result(xmpp_conn_t * const conn,
 	/* fall back to next auth method */
 	_auth(conn);
     } else if (strcmp(name, "success") == 0) {
-	/* SASL PLAIN auth successful, we need to restart the stream */
+	/* SASL auth successful, we need to restart the stream */
 	xmpp_debug(conn->ctx, "xmpp", "SASL %s auth successful",
 		   (char *)userdata);
 
@@ -549,9 +560,11 @@ static xmpp_stanza_t *_make_sasl_auth(xmpp_conn_t * const conn,
  */
 static void _auth(xmpp_conn_t * const conn)
 {
-    xmpp_stanza_t *auth, *authdata, *query, *child, *iq;
+    xmpp_stanza_t *auth;
-    char *str, *authid;
+    xmpp_stanza_t *authdata;
+    char *authid;
     char *scram_init;
+    char *str;
     int anonjid;
 
     /* if there is no node in conn->jid, we assume anonymous connect */
@@ -564,7 +577,7 @@ static void _auth(xmpp_conn_t * const conn)
     }
 
     if (conn->tls_support) {
-	tls_t *tls = tls_new(conn->ctx, conn->sock);
+	tls_t *tls = tls_new(conn);
 
 	/* If we couldn't init tls, it isn't there, so go on */
 	if (!tls) {
@@ -718,108 +731,12 @@ static void _auth(xmpp_conn_t * const conn)
 
 	/* SASL PLAIN was tried */
 	conn->sasl_support &= ~SASL_MASK_PLAIN;
-    } else if (conn->type == XMPP_CLIENT) {
+    } else if (conn->type == XMPP_CLIENT && conn->auth_legacy_enabled) {
         /* legacy client authentication */
-
+        _auth_legacy(conn);
-	iq = xmpp_stanza_new(conn->ctx);
-	if (!iq) {
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_name(iq, "iq");
-	xmpp_stanza_set_type(iq, "set");
-	xmpp_stanza_set_id(iq, "_xmpp_auth1");
-
-	query = xmpp_stanza_new(conn->ctx);
-	if (!query) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_name(query, "query");
-	xmpp_stanza_set_ns(query, XMPP_NS_AUTH);
-	xmpp_stanza_add_child(iq, query);
-	xmpp_stanza_release(query);
-
-	child = xmpp_stanza_new(conn->ctx);
-	if (!child) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_name(child, "username");
-	xmpp_stanza_add_child(query, child);
-	xmpp_stanza_release(child);
-
-	authdata = xmpp_stanza_new(conn->ctx);
-	if (!authdata) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	str = xmpp_jid_node(conn->ctx, conn->jid);
-	xmpp_stanza_set_text(authdata, str);
-	xmpp_free(conn->ctx, str);
-	xmpp_stanza_add_child(child, authdata);
-	xmpp_stanza_release(authdata);
-
-	child = xmpp_stanza_new(conn->ctx);
-	if (!child) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_name(child, "password");
-	xmpp_stanza_add_child(query, child);
-	xmpp_stanza_release(child);
-
-	authdata = xmpp_stanza_new(conn->ctx);
-	if (!authdata) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_text(authdata, conn->pass);
-	xmpp_stanza_add_child(child, authdata);
-	xmpp_stanza_release(authdata);
-
-	child = xmpp_stanza_new(conn->ctx);
-	if (!child) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	xmpp_stanza_set_name(child, "resource");
-	xmpp_stanza_add_child(query, child);
-	xmpp_stanza_release(child);
-
-	authdata = xmpp_stanza_new(conn->ctx);
-	if (!authdata) {
-	    xmpp_stanza_release(iq);
-	    disconnect_mem_error(conn);
-	    return;
-	}
-	str = xmpp_jid_resource(conn->ctx, conn->jid);
-	if (str) {
-	    xmpp_stanza_set_text(authdata, str);
-	    xmpp_free(conn->ctx, str);
     } else {
-	    xmpp_stanza_release(authdata);
+        xmpp_error(conn->ctx, "auth", "Cannot authenticate with known methods");
-	    xmpp_stanza_release(iq);
-	    xmpp_error(conn->ctx, "auth",
-		       "Cannot authenticate without resource");
         xmpp_disconnect(conn);
-	    return;
-	}
-	xmpp_stanza_add_child(child, authdata);
-	xmpp_stanza_release(authdata);
-
-	handler_add_id(conn, _handle_legacy, "_xmpp_auth1", NULL);
-	handler_add_timed(conn, _handle_missing_legacy,
-			  LEGACY_TIMEOUT, NULL);
-
-	xmpp_send(conn, iq);
-	xmpp_stanza_release(iq);
     }
 }
 
@@ -838,15 +755,23 @@ void auth_handle_open(xmpp_conn_t * const conn)
     /* reset all timed handlers */
     handler_reset_timed(conn, 0);
 
-    /* setup handler for stream:error */
+    /* setup handler for stream:error, we will keep this handler
-    handler_add(conn, _handle_error,
+     * for reopened streams until connection is disconnected */
-		XMPP_NS_STREAMS, "error", NULL, NULL);
+    handler_add(conn, _handle_error, XMPP_NS_STREAMS, "error", NULL, NULL);
 
     /* setup handlers for incoming <stream:features> */
     handler_add(conn, _handle_features,
 		XMPP_NS_STREAMS, "features", NULL, NULL);
-    handler_add_timed(conn, _handle_missing_features,
+    handler_add_timed(conn, _handle_missing_features, FEATURES_TIMEOUT, NULL);
-		      FEATURES_TIMEOUT, NULL);
+}
+
+/* called when stream:stream tag received after TLS establishment */
+static void _handle_open_tls(xmpp_conn_t * const conn)
+{
+    /* setup handlers for incoming <stream:features> */
+    handler_add(conn, _handle_features,
+		XMPP_NS_STREAMS, "features", NULL, NULL);
+    handler_add_timed(conn, _handle_missing_features, FEATURES_TIMEOUT, NULL);
 }
 
 /* called when stream:stream tag received after SASL auth */
@@ -865,7 +790,8 @@ static int _handle_features_sasl(xmpp_conn_t * const conn,
 				 xmpp_stanza_t * const stanza,
 				 void * const userdata)
 {
-    xmpp_stanza_t *bind, *session, *iq, *res, *text;
+    xmpp_stanza_t *bind, *session, *iq, *res, *text, *opt;
+    const char *ns;
     char *resource;
 
     /* remove missing features handler */
@@ -874,16 +800,27 @@ static int _handle_features_sasl(xmpp_conn_t * const conn,
     /* we are expecting <bind/> and <session/> since this is a
        XMPP style connection */
 
+    /* check whether resource binding is required */
     bind = xmpp_stanza_get_child_by_name(stanza, "bind");
-    if (bind && strcmp(xmpp_stanza_get_ns(bind), XMPP_NS_BIND) == 0) {
+    if (bind) {
-	/* resource binding is required */
+        ns = xmpp_stanza_get_ns(bind);
-	conn->bind_required = 1;
+	conn->bind_required = ns != NULL && strcmp(ns, XMPP_NS_BIND) == 0;
     }
 
+    /* check whether session establishment is required */
     session = xmpp_stanza_get_child_by_name(stanza, "session");
-    if (session && strcmp(xmpp_stanza_get_ns(session), XMPP_NS_SESSION) == 0) {
+    if (session) {
-	/* session establishment required */
+        ns = xmpp_stanza_get_ns(session);
-	conn->session_required = 1;
+        opt = xmpp_stanza_get_child_by_name(session, "optional");
+	if (!opt)
+            conn->session_required = ns != NULL &&
+                                     strcmp(ns, XMPP_NS_SESSION) == 0;
+    }
+
+    opt = xmpp_stanza_get_child_by_ns(stanza, XMPP_NS_SM);
+    if (opt && strcmp(xmpp_stanza_get_name(opt), "sm") == 0) {
+        /* stream management supported */
+        conn->sm_support = 1;
     }
 
     /* if bind is required, go ahead and start it */
@@ -896,16 +833,12 @@ static int _handle_features_sasl(xmpp_conn_t * const conn,
 			  BIND_TIMEOUT, NULL);
 
 	/* send bind request */
-	iq = xmpp_stanza_new(conn->ctx);
+	iq = xmpp_iq_new(conn->ctx, "set", "_xmpp_bind1");
 	if (!iq) {
 	    disconnect_mem_error(conn);
 	    return 0;
 	}
 
-	xmpp_stanza_set_name(iq, "iq");
-	xmpp_stanza_set_type(iq, "set");
-	xmpp_stanza_set_id(iq, "_xmpp_bind1");
-
 	bind = xmpp_stanza_copy(bind);
 	if (!bind) {
 	    xmpp_stanza_release(iq);
@@ -978,7 +911,7 @@ static int _handle_bind(xmpp_conn_t * const conn,
 			void * const userdata)
 {
     const char *type;
-    xmpp_stanza_t *iq, *session;
+    xmpp_stanza_t *iq, *enable, *session, *binding, *jid_stanza;
 
     /* delete missing bind handler */
     xmpp_timed_handler_delete(conn, _handle_missing_bind);
@@ -989,12 +922,11 @@ static int _handle_bind(xmpp_conn_t * const conn,
 	xmpp_error(conn->ctx, "xmpp", "Binding failed.");
 	xmpp_disconnect(conn);
     } else if (type && strcmp(type, "result") == 0) {
-        xmpp_stanza_t *binding = xmpp_stanza_get_child_by_name(stanza, "bind");
+        binding = xmpp_stanza_get_child_by_name(stanza, "bind");
 	xmpp_debug(conn->ctx, "xmpp", "Bind successful.");
 
         if (binding) {
-            xmpp_stanza_t *jid_stanza = xmpp_stanza_get_child_by_name(binding,
+            jid_stanza = xmpp_stanza_get_child_by_name(binding, "jid");
-                                                                      "jid");
             if (jid_stanza) {
                 conn->bound_jid = xmpp_stanza_get_text(jid_stanza);
             }
@@ -1008,20 +940,17 @@ static int _handle_bind(xmpp_conn_t * const conn,
 			      SESSION_TIMEOUT, NULL);
 
 	    /* send session request */
-	    iq = xmpp_stanza_new(conn->ctx);
+            iq = xmpp_iq_new(conn->ctx, "set", "_xmpp_session1");
 	    if (!iq) {
 		disconnect_mem_error(conn);
 		return 0;
 	    }
 
-	    xmpp_stanza_set_name(iq, "iq");
-	    xmpp_stanza_set_type(iq, "set");
-	    xmpp_stanza_set_id(iq, "_xmpp_session1");
-
 	    session = xmpp_stanza_new(conn->ctx);
 	    if (!session) {
 		xmpp_stanza_release(iq);
 		disconnect_mem_error(conn);
+                return 0;
 	    }
 
 	    xmpp_stanza_set_name(session, "session");
@@ -1033,7 +962,23 @@ static int _handle_bind(xmpp_conn_t * const conn,
 	    /* send session establishment request */
 	    xmpp_send(conn, iq);
 	    xmpp_stanza_release(iq);
-	} else {
+	}
+
+        if (conn->sm_support) {
+            enable = xmpp_stanza_new(conn->ctx);
+            if (!enable) {
+                disconnect_mem_error(conn);
+                return 0;
+            }
+            xmpp_stanza_set_name(enable, "enable");
+            xmpp_stanza_set_ns(enable, XMPP_NS_SM);
+            handler_add(conn, _handle_sm, XMPP_NS_SM, NULL, NULL, NULL);
+            xmpp_send(conn, enable);
+            xmpp_stanza_release(enable);
+            conn->sm_sent_nr = 0;
+        }
+
+	if (!conn->session_required) {
 	    conn->authenticated = 1;
 
 	    /* call connection handler */
@@ -1093,6 +1038,32 @@ static int _handle_missing_session(xmpp_conn_t * const conn,
     return 0;
 }
 
+static int _handle_missing_legacy(xmpp_conn_t * const conn,
+				  void * const userdata)
+{
+    xmpp_error(conn->ctx, "xmpp", "Server did not reply to legacy "\
+	       "authentication request.");
+    xmpp_disconnect(conn);
+    return 0;
+}
+
+static int _handle_sm(xmpp_conn_t * const conn,
+                      xmpp_stanza_t * const stanza,
+                      void * const userdata)
+{
+    const char *name;
+
+    name = xmpp_stanza_get_name(stanza);
+    if (name && strcmp(name, "enabled") == 0) {
+        conn->sm_enabled = 1;
+        conn->sm_handled_nr = 0;
+    } else {
+        conn->sm_enabled = 0;
+        xmpp_warn(conn->ctx, "auth", "Stream management failed.");
+    }
+    return 0;
+}
+
 static int _handle_legacy(xmpp_conn_t * const conn,
 			  xmpp_stanza_t * const stanza,
 			  void * const userdata)
@@ -1129,13 +1100,97 @@ static int _handle_legacy(xmpp_conn_t * const conn,
     return 0;
 }
 
-static int _handle_missing_legacy(xmpp_conn_t * const conn,
+static void _auth_legacy(xmpp_conn_t *conn)
-				  void * const userdata)
 {
-    xmpp_error(conn->ctx, "xmpp", "Server did not reply to legacy "\
+    xmpp_stanza_t *iq;
-	       "authentication request.");
+    xmpp_stanza_t *authdata;
+    xmpp_stanza_t *query;
+    xmpp_stanza_t *child;
+    char *str;
+
+    xmpp_debug(conn->ctx, "auth", "Legacy authentication request");
+
+    iq = xmpp_iq_new(conn->ctx, "set", "_xmpp_auth1");
+    if (!iq)
+        goto err;
+
+    query = xmpp_stanza_new(conn->ctx);
+    if (!query)
+        goto err_free;
+    xmpp_stanza_set_name(query, "query");
+    xmpp_stanza_set_ns(query, XMPP_NS_AUTH);
+    xmpp_stanza_add_child(iq, query);
+    xmpp_stanza_release(query);
+
+    child = xmpp_stanza_new(conn->ctx);
+    if (!child)
+        goto err_free;
+    xmpp_stanza_set_name(child, "username");
+    xmpp_stanza_add_child(query, child);
+    xmpp_stanza_release(child);
+
+    authdata = xmpp_stanza_new(conn->ctx);
+    if (!authdata)
+        goto err_free;
+    str = xmpp_jid_node(conn->ctx, conn->jid);
+    if (!str) {
+        xmpp_stanza_release(authdata);
+        goto err_free;
+    }
+    xmpp_stanza_set_text(authdata, str);
+    xmpp_free(conn->ctx, str);
+    xmpp_stanza_add_child(child, authdata);
+    xmpp_stanza_release(authdata);
+
+    child = xmpp_stanza_new(conn->ctx);
+    if (!child)
+        goto err_free;
+    xmpp_stanza_set_name(child, "password");
+    xmpp_stanza_add_child(query, child);
+    xmpp_stanza_release(child);
+
+    authdata = xmpp_stanza_new(conn->ctx);
+    if (!authdata)
+        goto err_free;
+    xmpp_stanza_set_text(authdata, conn->pass);
+    xmpp_stanza_add_child(child, authdata);
+    xmpp_stanza_release(authdata);
+
+    child = xmpp_stanza_new(conn->ctx);
+    if (!child)
+        goto err_free;
+    xmpp_stanza_set_name(child, "resource");
+    xmpp_stanza_add_child(query, child);
+    xmpp_stanza_release(child);
+
+    authdata = xmpp_stanza_new(conn->ctx);
+    if (!authdata)
+        goto err_free;
+    str = xmpp_jid_resource(conn->ctx, conn->jid);
+    if (str) {
+        xmpp_stanza_set_text(authdata, str);
+        xmpp_free(conn->ctx, str);
+    } else {
+        xmpp_stanza_release(authdata);
+        xmpp_stanza_release(iq);
+        xmpp_error(conn->ctx, "auth", "Cannot authenticate without resource");
         xmpp_disconnect(conn);
-    return 0;
+        return;
+    }
+    xmpp_stanza_add_child(child, authdata);
+    xmpp_stanza_release(authdata);
+
+    handler_add_id(conn, _handle_legacy, "_xmpp_auth1", NULL);
+    handler_add_timed(conn, _handle_missing_legacy, LEGACY_TIMEOUT, NULL);
+
+    xmpp_send(conn, iq);
+    xmpp_stanza_release(iq);
+    return;
+
+err_free:
+    xmpp_stanza_release(iq);
+err:
+    disconnect_mem_error(conn);
 }
 
 void auth_handle_component_open(xmpp_conn_t * const conn)

src/common.h

@@ -50,6 +50,8 @@ struct _xmpp_ctx_t {
     xmpp_rand_t *rand;
     xmpp_loop_status_t loop_status;
     xmpp_connlist_t *connlist;
+
+    unsigned long timeout;
 };
 
 
@@ -105,7 +107,7 @@ typedef struct _xmpp_handlist_t xmpp_handlist_t;
 struct _xmpp_handlist_t {
     /* common members */
     int user_handler;
-    void *handler;
+    int (*handler)();
     void *userdata;
     int enabled; /* handlers are added disabled and enabled after the
                   * handler chain is processed to prevent stanzas from
@@ -128,7 +130,7 @@ struct _xmpp_handlist_t {
             char *name;
             char *type;
         };
-    };
+    } u;
 };
 
 #define MAX_DOMAIN_LEN 256
@@ -166,14 +168,20 @@ struct _xmpp_conn_t {
     int tls_disabled;
     int tls_mandatory;
     int tls_legacy_ssl;
+    int tls_trust;
     int tls_failed; /* set when tls fails, so we don't try again */
     int sasl_support; /* if true, field is a bitfield of supported 
                          mechanisms */
+    int auth_legacy_enabled;
     int secured; /* set when stream is secured with TLS */
 
     /* if server returns <bind/> or <session/> we must do them */
     int bind_required;
     int session_required;
+    int sm_support;
+    int sm_enabled;
+    uint32_t sm_handled_nr;
+    uint32_t sm_sent_nr;
 
     char *lang;
     char *domain;
@@ -264,6 +272,7 @@ void handler_add(xmpp_conn_t * const conn,
                  const char * const name,
                  const char * const type,
                  void * const userdata);
+void handler_system_delete_all(xmpp_conn_t *conn);
 
 /* utility functions */
 void disconnect_mem_error(xmpp_conn_t * const conn);

src/conn.c

@@ -62,6 +62,8 @@ static void _handle_stream_end(char *name,
                                void * const userdata);
 static void _handle_stream_stanza(xmpp_stanza_t *stanza,
                                   void * const userdata);
+static void _conn_sm_handle_stanza(xmpp_conn_t * const conn,
+                                   xmpp_stanza_t *stanza);
 static unsigned short _conn_default_port(xmpp_conn_t * const conn,
                                          xmpp_conn_type_t type);
 static void _conn_reset(xmpp_conn_t * const conn);
@@ -73,6 +75,15 @@ static int _conn_connect(xmpp_conn_t * const conn,
                          xmpp_conn_handler callback,
                          void * const userdata);
 
+void xmpp_send_error(xmpp_conn_t * const conn, xmpp_error_type_t const type, char * const text)
+{
+    xmpp_stanza_t *error = xmpp_error_new(conn->ctx, type, text);
+
+    xmpp_send(conn, error);
+
+    xmpp_stanza_release(error);
+}
+
 /** Create a new Strophe connection object.
  *
  *  @param ctx a Strophe context object
@@ -128,12 +139,18 @@ xmpp_conn_t *xmpp_conn_new(xmpp_ctx_t * const ctx)
         conn->tls_disabled = 0;
         conn->tls_mandatory = 0;
         conn->tls_legacy_ssl = 0;
+        conn->tls_trust = 0;
         conn->tls_failed = 0;
         conn->sasl_support = 0;
+        conn->auth_legacy_enabled = 0;
         conn->secured = 0;
 
         conn->bind_required = 0;
         conn->session_required = 0;
+        conn->sm_support = 0;
+        conn->sm_enabled = 0;
+        conn->sm_handled_nr = 0;
+        conn->sm_sent_nr = 0;
 
         conn->parser = parser_new(conn->ctx,
                                   _handle_stream_start,
@@ -243,6 +260,12 @@ int xmpp_conn_release(xmpp_conn_t * const conn)
     else {
         ctx = conn->ctx;
 
+        if (conn->state == XMPP_STATE_CONNECTING ||
+            conn->state == XMPP_STATE_CONNECTED)
+        {
+            conn_disconnect(conn);
+        }
+
         /* remove connection from context's connlist */
         if (ctx->connlist->conn == conn) {
             item = ctx->connlist;
@@ -264,6 +287,8 @@ int xmpp_conn_release(xmpp_conn_t * const conn)
             }
         }
 
+        _conn_reset(conn);
+
         /* free handler stuff
          * note that userdata is the responsibility of the client
          * and the handler pointers don't need to be freed since they
@@ -286,7 +311,7 @@ int xmpp_conn_release(xmpp_conn_t * const conn)
             while (hlitem) {
                 thli = hlitem;
                 hlitem = hlitem->next;
-                xmpp_free(conn->ctx, thli->id);
+                xmpp_free(conn->ctx, thli->u.id);
                 xmpp_free(conn->ctx, thli);
             }
         }
@@ -298,14 +323,13 @@ int xmpp_conn_release(xmpp_conn_t * const conn)
             thli = hlitem;
             hlitem = hlitem->next;
 
-            if (thli->ns) xmpp_free(ctx, thli->ns);
+            if (thli->u.ns) xmpp_free(ctx, thli->u.ns);
-            if (thli->name) xmpp_free(ctx, thli->name);
+            if (thli->u.name) xmpp_free(ctx, thli->u.name);
-            if (thli->type) xmpp_free(ctx, thli->type);
+            if (thli->u.type) xmpp_free(ctx, thli->u.type);
             xmpp_free(ctx, thli);
         }
 
         parser_free(conn->parser);
-        _conn_reset(conn);
 
         if (conn->jid) xmpp_free(ctx, conn->jid);
         if (conn->pass) xmpp_free(ctx, conn->pass);
@@ -702,7 +726,7 @@ void conn_parser_reset(xmpp_conn_t * const conn)
 /** Initiate termination of the connection to the XMPP server.
  *  This function starts the disconnection sequence by sending
  *  </stream:stream> to the XMPP server.  This function will do nothing
- *  if the connection state is CONNECTING or CONNECTED.
+ *  if the connection state is different from CONNECTING or CONNECTED.
  *
  *  @param conn a Strophe connection object
  *
@@ -744,10 +768,10 @@ void xmpp_send_raw_string(xmpp_conn_t * const conn,
     char *bigbuf;
 
     va_start(ap, fmt);
-    len = xmpp_vsnprintf(buf, 1024, fmt, ap);
+    len = xmpp_vsnprintf(buf, sizeof(buf), fmt, ap);
     va_end(ap);
 
-    if (len >= 1024) {
+    if (len >= sizeof(buf)) {
         /* we need more space for this data, so we allocate a big
          * enough buffer and print to that */
         len++; /* account for trailing \0 */
@@ -768,7 +792,6 @@ void xmpp_send_raw_string(xmpp_conn_t * const conn,
         xmpp_free(conn->ctx, bigbuf);
     } else {
         xmpp_debug(conn->ctx, "conn", "SENT: %s", buf);
-
         xmpp_send_raw(conn, buf, len);
     }
 }
@@ -833,10 +856,9 @@ void xmpp_send(xmpp_conn_t * const conn,
 {
     char *buf;
     size_t len;
-    int ret;
 
     if (conn->state == XMPP_STATE_CONNECTED) {
-        if ((ret = xmpp_stanza_to_text(stanza, &buf, &len)) == 0) {
+        if (xmpp_stanza_to_text(stanza, &buf, &len) == 0) {
             xmpp_send_raw(conn, buf, len);
             xmpp_debug(conn->ctx, "conn", "SENT: %s", buf);
             xmpp_free(conn->ctx, buf);
@@ -874,7 +896,7 @@ int conn_tls_start(xmpp_conn_t * const conn)
         conn->tls = NULL;
         rc = XMPP_EINVOP;
     } else {
-        conn->tls = tls_new(conn->ctx, conn->sock);
+        conn->tls = tls_new(conn);
         rc = conn->tls == NULL ? XMPP_EMEM : 0;
     }
 
@@ -910,7 +932,9 @@ long xmpp_conn_get_flags(const xmpp_conn_t * const conn)
 
     flags = XMPP_CONN_FLAG_DISABLE_TLS * conn->tls_disabled |
             XMPP_CONN_FLAG_MANDATORY_TLS * conn->tls_mandatory |
-            XMPP_CONN_FLAG_LEGACY_SSL * conn->tls_legacy_ssl;
+            XMPP_CONN_FLAG_LEGACY_SSL * conn->tls_legacy_ssl |
+            XMPP_CONN_FLAG_TRUST_TLS * conn->tls_trust |
+            XMPP_CONN_FLAG_LEGACY_AUTH * conn->auth_legacy_enabled;;
 
     return flags;
 }
@@ -927,6 +951,8 @@ long xmpp_conn_get_flags(const xmpp_conn_t * const conn)
  *    - XMPP_CONN_FLAG_DISABLE_TLS
  *    - XMPP_CONN_FLAG_MANDATORY_TLS
  *    - XMPP_CONN_FLAG_LEGACY_SSL
+ *    - XMPP_CONN_FLAG_TRUST_TLS
+ *    - XMPP_CONN_FLAG_LEGACY_AUTH
  *
  *  @param conn a Strophe connection object
  *  @param flags ORed connection flags
@@ -943,7 +969,8 @@ int xmpp_conn_set_flags(xmpp_conn_t * const conn, long flags)
         return XMPP_EINVOP;
     }
     if (flags & XMPP_CONN_FLAG_DISABLE_TLS &&
-        flags & (XMPP_CONN_FLAG_MANDATORY_TLS | XMPP_CONN_FLAG_LEGACY_SSL)) {
+        flags & (XMPP_CONN_FLAG_MANDATORY_TLS | XMPP_CONN_FLAG_LEGACY_SSL |
+                 XMPP_CONN_FLAG_TRUST_TLS)) {
         xmpp_error(conn->ctx, "conn", "Flags 0x%04lx conflict", flags);
         return XMPP_EINVOP;
     }
@@ -951,6 +978,8 @@ int xmpp_conn_set_flags(xmpp_conn_t * const conn, long flags)
     conn->tls_disabled = (flags & XMPP_CONN_FLAG_DISABLE_TLS) ? 1 : 0;
     conn->tls_mandatory = (flags & XMPP_CONN_FLAG_MANDATORY_TLS) ? 1 : 0;
     conn->tls_legacy_ssl = (flags & XMPP_CONN_FLAG_LEGACY_SSL) ? 1 : 0;
+    conn->tls_trust = (flags & XMPP_CONN_FLAG_TRUST_TLS) ? 1 : 0;
+    conn->auth_legacy_enabled = (flags & XMPP_CONN_FLAG_LEGACY_AUTH) ? 1 : 0;
 
     return 0;
 }
@@ -985,6 +1014,37 @@ int xmpp_conn_is_secured(xmpp_conn_t * const conn)
     return conn->secured && !conn->tls_failed && conn->tls != NULL ? 1 : 0;
 }
 
+/**
+ *  @return TRUE if connection is in connecting state and FALSE otherwise
+ *
+ *  @ingroup Connections
+ */
+int xmpp_conn_is_connecting(xmpp_conn_t * const conn)
+{
+    return conn->state == XMPP_STATE_CONNECTING ? 1 : 0;
+}
+
+/**
+ *  @return TRUE if connection is in connected state and FALSE otherwise
+ *
+ *  @ingroup Connections
+ */
+int xmpp_conn_is_connected(xmpp_conn_t * const conn)
+{
+    return conn->state == XMPP_STATE_CONNECTED ? 1 : 0;
+}
+
+/**
+ *  @return TRUE if connection is in disconnected state and FALSE otherwise
+ *
+ *  @ingroup Connections
+ */
+int xmpp_conn_is_disconnected(xmpp_conn_t * const conn)
+{
+    return conn->state == XMPP_STATE_DISCONNECTED ? 1 : 0;
+}
+
+
 /* timed handler for cleanup if normal disconnect procedure takes too long */
 static int _disconnect_cleanup(xmpp_conn_t * const conn,
                                void * const userdata)
@@ -1162,6 +1222,36 @@ static void _handle_stream_stanza(xmpp_stanza_t *stanza,
     }
 
     handler_fire_stanza(conn, stanza);
+    if (conn->sm_enabled)
+        _conn_sm_handle_stanza(conn, stanza);
+}
+
+/* XEP-0198 stream management */
+static void _conn_sm_handle_stanza(xmpp_conn_t * const conn,
+                                   xmpp_stanza_t *stanza)
+{
+    xmpp_stanza_t *a;
+    const char *name;
+    const char *ns;
+    char h[11];
+
+    ns = xmpp_stanza_get_ns(stanza);
+    if (ns && strcmp(ns, XMPP_NS_SM) != 0)
+        ++conn->sm_handled_nr;
+    else {
+        name = xmpp_stanza_get_name(stanza);
+        if (name && strcmp(name, "r") == 0) {
+            a = xmpp_stanza_new(conn->ctx);
+            if (!a)
+                return; /* XXX */
+            xmpp_stanza_set_name(a, "a");
+            xmpp_stanza_set_ns(a, XMPP_NS_SM);
+            xmpp_snprintf(h, sizeof(h), "%u", conn->sm_handled_nr);
+            xmpp_stanza_set_attribute(a, "h", h);
+            xmpp_send(conn, a);
+            xmpp_stanza_release(a);
+        }
+    }
 }
 
 static unsigned short _conn_default_port(xmpp_conn_t * const conn,
@@ -1196,6 +1286,9 @@ static void _conn_reset(xmpp_conn_t * const conn)
         xmpp_free(ctx, tsq->data);
         xmpp_free(ctx, tsq);
     }
+    conn->send_queue_head = NULL;
+    conn->send_queue_tail = NULL;
+    conn->send_queue_len = 0;
 
     if (conn->stream_error) {
         xmpp_stanza_release(conn->stream_error->stanza);
@@ -1215,6 +1308,14 @@ static void _conn_reset(xmpp_conn_t * const conn)
     conn->secured = 0;
     conn->tls_failed = 0;
     conn->error = 0;
+
+    conn->tls_support = 0;
+    conn->sm_support = 0;
+    conn->sm_enabled = 0;
+    conn->bind_required = 0;
+    conn->session_required = 0;
+
+    handler_system_delete_all(conn);
 }
 
 static int _conn_connect(xmpp_conn_t * const conn,

src/crypto.c

@@ -61,7 +61,7 @@ static char *digest_to_string_alloc(xmpp_ctx_t *ctx, const uint8_t *digest)
     return s;
 }
 
-/** Compute SHA1 message digest
+/** Compute SHA1 message digest.
  *  Returns an allocated string which represents SHA1 message digest in
  *  hexadecimal notation. The string must be freed with xmpp_free().
  *
@@ -81,9 +81,37 @@ char *xmpp_sha1(xmpp_ctx_t *ctx, const unsigned char *data, size_t len)
     return digest_to_string_alloc(ctx, digest);
 }
 
-/** Create new SHA1 object
+/** Compute SHA1 message digest.
+ *  Stores digest in user's buffer which must be at least XMPP_SHA1_DIGEST_SIZE
+ *  bytes long.
  *
- *  @param ctx a Strophe context onject
+ *  @param data buffer for digest computation
+ *  @param len size of the data buffer
+ *  @param digest output buffer of XMPP_SHA1_DIGEST_SIZE bytes
+ *
+ *  @ingroup Digests
+ */
+void xmpp_sha1_digest(const unsigned char *data, size_t len,
+                      unsigned char *digest)
+{
+    crypto_SHA1((const uint8_t *)data, len, digest);
+}
+
+/** Create new SHA1 object.
+ *  SHA1 object is used to compute SHA1 digest of a buffer that is split
+ *  in multiple chunks or provided in stream mode. A single buffer can be
+ *  processed by short functions xmpp_sha1() and xmpp_sha1_digest().
+ *  Follow the next use-case for xmpp_sha1_t object:
+ *  @code
+ *      xmpp_sha1_t *sha1 = xmpp_sha1_new(ctx);
+ *      // Repeat update for all chunks of data
+ *      xmpp_sha1_update(sha1, data, len);
+ *      xmpp_sha1_final(sha1);
+ *      char *digest = xmpp_sha1_to_string_alloc(sha1);
+ *      xmpp_sha1_free(sha1);
+ *  @endcode
+ *
+ *  @param ctx a Strophe context object
  *
  *  @return new SHA1 object
  *
@@ -102,7 +130,7 @@ xmpp_sha1_t *xmpp_sha1_new(xmpp_ctx_t *ctx)
     return sha1;
 }
 
-/** Destroy SHA1 object
+/** Destroy SHA1 object.
  *
  *  @param sha1 a SHA1 object
  *
@@ -113,7 +141,7 @@ void xmpp_sha1_free(xmpp_sha1_t *sha1)
     xmpp_free(sha1->xmpp_ctx, sha1);
 }
 
-/** Update SHA1 context with the next portion of data
+/** Update SHA1 context with the next portion of data.
  *  Can be called repeatedly.
  *
  *  @param sha1 a SHA1 object
@@ -127,7 +155,7 @@ void xmpp_sha1_update(xmpp_sha1_t *sha1, const unsigned char *data, size_t len)
     crypto_SHA1_Update(&sha1->ctx, data, len);
 }
 
-/** Finish SHA1 computation
+/** Finish SHA1 computation.
  *  Don't call xmpp_sha1_update() after this function. Retrieve resulting
  *  message digest with xmpp_sha1_to_string() or xmpp_sha1_to_digest().
  *
@@ -140,7 +168,7 @@ void xmpp_sha1_final(xmpp_sha1_t *sha1)
     crypto_SHA1_Final(&sha1->ctx, sha1->digest);
 }
 
-/** Return message digest rendered as a string
+/** Return message digest rendered as a string.
  *  Stores the string to a user's buffer and returns the buffer. Call this
  *  function after xmpp_sha1_final().
  *
@@ -157,7 +185,7 @@ char *xmpp_sha1_to_string(xmpp_sha1_t *sha1, char *s, size_t slen)
     return digest_to_string(sha1->digest, s, slen);
 }
 
-/** Return message digest rendered as a string
+/** Return message digest rendered as a string.
  *  Returns an allocated string. Free the string using the Strophe context
  *  which is passed to xmpp_sha1_new(). Call this function after
  *  xmpp_sha1_final().
@@ -173,7 +201,7 @@ char *xmpp_sha1_to_string_alloc(xmpp_sha1_t *sha1)
     return digest_to_string_alloc(sha1->xmpp_ctx, sha1->digest);
 }
 
-/** Stores message digest to a user's buffer
+/** Stores message digest to a user's buffer.
  *
  *  @param sha1 a SHA1 object
  *  @param digest output buffer of XMPP_SHA1_DIGEST_SIZE bytes
@@ -391,7 +419,7 @@ _base64_error:
     *outlen = 0;
 }
 
-/** Base64 encoding routine
+/** Base64 encoding routine.
  *  Returns an allocated string which must be freed with xmpp_free().
  *
  *  @param ctx a Strophe context
@@ -407,7 +435,7 @@ char *xmpp_base64_encode(xmpp_ctx_t *ctx, const unsigned char *data, size_t len)
     return base64_encode(ctx, data, len);
 }
 
-/** Base64 decoding routine
+/** Base64 decoding routine.
  *  Returns an allocated string which must be freed with xmpp_free(). User
  *  calls this function when the result must be a string. When decoded buffer
  *  contains '\0' NULL is returned.
@@ -443,7 +471,7 @@ char *xmpp_base64_decode_str(xmpp_ctx_t *ctx, const char *base64, size_t len)
     return (char *)buf;
 }
 
-/** Base64 decoding routine
+/** Base64 decoding routine.
  *  Returns an allocated buffer which must be freed with xmpp_free().
  *
  *  @param ctx a Strophe context

src/ctx.c

@@ -47,10 +47,11 @@
 
 #include "strophe.h"
 #include "common.h"
+#include "resolver.h"
 #include "util.h"
 
 /* Workaround for visual studio without va_copy support. */
-#if defined(_MSC_VER) && _MSC_VER < 1800
+#if defined(_MSC_VER) && _MSC_VER < 1800 || defined(__HAIKU__)
 #define va_copy(d,s) ((d) = (s))
 #endif
 
@@ -63,6 +64,7 @@
  void xmpp_initialize(void)
 {
     sock_initialize();
+    resolver_initialize();
     tls_initialize();
 }
 
@@ -73,6 +75,7 @@
 void xmpp_shutdown(void)
 {
     tls_shutdown();
+    resolver_shutdown();
     sock_shutdown();
 }
 
@@ -91,6 +94,14 @@ void xmpp_shutdown(void)
 #define LIBXMPP_VERSION_MINOR (0)
 #endif
 
+#ifndef EVENT_LOOP_DEFAULT_TIMEOUT
+/** @def EVENT_LOOP_DEFAULT_TIMEOUT
+ *  The default timeout in milliseconds for the event loop.
+ *  This is set to 1 second.
+ */
+#define EVENT_LOOP_DEFAULT_TIMEOUT 1000
+#endif
+
 /** Check that Strophe supports a specific API version.
  *
  *  @param major the major version number
@@ -182,7 +193,6 @@ xmpp_log_t *xmpp_get_default_logger(xmpp_log_level_t level)
 {
     /* clamp to the known range */
     if (level > XMPP_LEVEL_ERROR) level = XMPP_LEVEL_ERROR;
-    if (level < XMPP_LEVEL_DEBUG) level = XMPP_LEVEL_DEBUG;
 
     return (xmpp_log_t*)&_xmpp_default_loggers[level];
 }
@@ -410,6 +420,7 @@ xmpp_ctx_t *xmpp_ctx_new(const xmpp_mem_t * const mem,
         ctx->connlist = NULL;
         ctx->loop_status = XMPP_LOOP_NOTSTARTED;
         ctx->rand = xmpp_rand_new(ctx);
+        ctx->timeout = EVENT_LOOP_DEFAULT_TIMEOUT;
         if (ctx->rand == NULL) {
             xmpp_free(ctx, ctx);
             ctx = NULL;
@@ -432,3 +443,14 @@ void xmpp_ctx_free(xmpp_ctx_t * const ctx)
     xmpp_free(ctx, ctx); /* pull the hole in after us */
 }
 
+/** Set the timeout to use when calling xmpp_run().
+ *
+ *  @param ctx a Strophe context object
+ *  @param timeout the time to wait for events in milliseconds
+ *
+ *  @ingroup Context
+ */
+void xmpp_ctx_set_timeout(xmpp_ctx_t * const ctx, const unsigned long timeout)
+{
+    ctx->timeout = timeout;
+}

src/event.c

@@ -41,23 +41,24 @@
 #define _sleep(x) usleep((x) * 1000)
 #else
 #include <winsock2.h>
+#ifndef ETIMEDOUT
 #define ETIMEDOUT WSAETIMEDOUT
+#endif
+#ifndef ECONNRESET
 #define ECONNRESET WSAECONNRESET
+#endif
+#ifndef ECONNABORTED
 #define ECONNABORTED WSAECONNABORTED
+#endif
 #define _sleep(x) Sleep(x)
 #endif
 
-#include <strophe.h>
+#include "strophe.h"
 #include "common.h"
 #include "parser.h"
 
-#ifndef DEFAULT_TIMEOUT
+/** Max buffer size for receiving messages. */
-/** @def DEFAULT_TIMEOUT
+#define STROPE_MESSAGE_BUFFER_SIZE 4096
- *  The default timeout in milliseconds for the event loop.
- *  This is set to 1 millisecond.
- */
-#define DEFAULT_TIMEOUT 1
-#endif
 
 /** Run the event loop once.
  *  This function will run send any data that has been queued by
@@ -82,7 +83,7 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
     struct timeval tv;
     xmpp_send_queue_t *sq, *tsq;
     int towrite;
-    char buf[4096];
+    char buf[STROPE_MESSAGE_BUFFER_SIZE];
     uint64_t next;
     uint64_t usec;
     int tls_read_bytes = 0;
@@ -104,8 +105,8 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
             ret = tls_clear_pending_write(conn->tls);
 
             if (ret < 0 && !tls_is_recoverable(tls_error(conn->tls))) {
-                /* an error occured */
+                /* an error occurred */
-                xmpp_debug(ctx, "xmpp", "Send error occured, disconnecting.");
+                xmpp_debug(ctx, "xmpp", "Send error occurred, disconnecting.");
                 conn->error = ECONNABORTED;
                 conn_disconnect(conn);
             }
@@ -118,30 +119,17 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
 
             if (conn->tls) {
                 ret = tls_write(conn->tls, &sq->data[sq->written], towrite);
-
+                if (ret < 0 && !tls_is_recoverable(tls_error(conn->tls)))
-                if (ret < 0 && !tls_is_recoverable(tls_error(conn->tls))) {
-                    /* an error occured */
                     conn->error = tls_error(conn->tls);
-                    break;
-                } else if (ret < towrite) {
-                    /* not all data could be sent now */
-                    if (ret >= 0) sq->written += ret;
-                    break;
-                }
-
             } else {
                 ret = sock_write(conn->sock, &sq->data[sq->written], towrite);
-
+                if (ret < 0 && !sock_is_recoverable(sock_error()))
-                if (ret < 0 && !sock_is_recoverable(sock_error())) {
-                    /* an error occured */
                     conn->error = sock_error();
-                    break;
-                } else if (ret < towrite) {
-                    /* not all data could be sent now */
-                    if (ret >= 0) sq->written += ret;
-                    break;
-                }
             }
+            if (ret > 0 && ret < towrite)
+                sq->written += ret; /* not all data could be sent now */
+            if (ret != towrite)
+                break; /* partial write or an error */
 
             /* all data for this queue item written, delete and move on */
             xmpp_free(ctx, sq->data);
@@ -160,7 +148,7 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
         if (conn->error) {
             /* FIXME: need to tear down send queues and random other things
              * maybe this should be abstracted */
-            xmpp_debug(ctx, "xmpp", "Send error occured, disconnecting.");
+            xmpp_debug(ctx, "xmpp", "Send error occurred, disconnecting.");
             conn->error = ECONNABORTED;
             conn_disconnect(conn);
         }
@@ -175,9 +163,8 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
     }
 
 
-    /* fire any ready timed handlers, then
+    /* fire any ready timed handlers, then make sure we don't wait past
-       make sure we don't wait past the time when timed handlers need
+       the time when timed handlers need to be called */
-       to be called */
     next = handler_fire_timed(ctx);
 
     usec = ((next < timeout) ? next : timeout) * 1000;
@@ -209,6 +196,8 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
             break;
         case XMPP_STATE_CONNECTED:
             FD_SET(conn->sock, &rfds);
+            if (conn->send_queue_len > 0)
+                FD_SET(conn->sock, &wfds);
             break;
         case XMPP_STATE_DISCONNECTED:
             /* do nothing */
@@ -217,9 +206,8 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
         }
 
         /* Check if there is something in the SSL buffer. */
-        if (conn->tls) {
+        if (conn->tls)
             tls_read_bytes += tls_pending(conn->tls);
-        }
 
         if (conn->state != XMPP_STATE_DISCONNECTED && conn->sock > max)
             max = conn->sock;
@@ -275,23 +263,20 @@ void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long timeout)
         case XMPP_STATE_CONNECTED:
             if (FD_ISSET(conn->sock, &rfds) || (conn->tls && tls_pending(conn->tls))) {
                 if (conn->tls) {
-                    ret = tls_read(conn->tls, buf, 4096);
+                    ret = tls_read(conn->tls, buf, STROPE_MESSAGE_BUFFER_SIZE);
                 } else {
-                    ret = sock_read(conn->sock, buf, 4096);
+                    ret = sock_read(conn->sock, buf, STROPE_MESSAGE_BUFFER_SIZE);
                 }
 
                 if (ret > 0) {
                     ret = parser_feed(conn->parser, buf, ret);
                     if (!ret) {
-                        /* parse error, we need to shut down */
+                        xmpp_debug(ctx, "xmpp", "parse error [%s]", buf);
-                        /* FIXME */
+                        xmpp_send_error(conn, XMPP_SE_INVALID_XML, "parse error");
-                        xmpp_debug(ctx, "xmpp", "parse error, disconnecting");
-                        conn_disconnect(conn);
                     }
                 } else {
                     if (conn->tls) {
-                        if (!tls_is_recoverable(tls_error(conn->tls)))
+                        if (!tls_is_recoverable(tls_error(conn->tls))) {
-                        {
                             xmpp_debug(ctx, "xmpp", "Unrecoverable TLS error, %d.", tls_error(conn->tls));
                             conn->error = tls_error(conn->tls);
                             conn_disconnect(conn);
@@ -333,7 +318,7 @@ void xmpp_run(xmpp_ctx_t *ctx)
 
     ctx->loop_status = XMPP_LOOP_RUNNING;
     while (ctx->loop_status == XMPP_LOOP_RUNNING) {
-        xmpp_run_once(ctx, DEFAULT_TIMEOUT);
+        xmpp_run_once(ctx, ctx->timeout);
     }
 
     /* make it possible to start event loop again */

src/handler.c

@@ -24,6 +24,31 @@
 #include "common.h"
 #include "ostypes.h"
 
+/* Remove item from the list pointed by head, but don't free it.
+ * There can be a situation when user's handler deletes another handler which
+ * is the previous in the list. handler_fire_stanza() and handler_fire_timed()
+ * must handle this situation correctly. Current function helps to avoid
+ * list corruption in described scenario.
+ *
+ * TODO Convert handler lists to double-linked lists. Current implementation
+ * works for O(n).
+ */
+static void _handler_item_remove(xmpp_handlist_t **head,
+                                 xmpp_handlist_t *item)
+{
+    xmpp_handlist_t *i = *head;
+
+    if (i == item)
+        *head = item->next;
+    else if (i != NULL) {
+        while (i->next != NULL && i->next != item)
+            i = i->next;
+        if (i->next == item) {
+            i->next = item->next;
+        }
+    }
+}
+
 /** Fire off all stanza handlers that match.
  *  This function is called internally by the event loop whenever stanzas
  *  are received from the XMPP server.
@@ -34,36 +59,40 @@
 void handler_fire_stanza(xmpp_conn_t * const conn,
                          xmpp_stanza_t * const stanza)
 {
-    xmpp_handlist_t *item, *prev;
+    xmpp_handlist_t *item, *next, *head, *head_old;
     const char *id, *ns, *name, *type;
+    int ret;
 
     /* call id handlers */
     id = xmpp_stanza_get_id(stanza);
     if (id) {
-	prev = NULL;
+        head = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
- 	item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
+        /* enable all added handlers */
-	while (item) {
+        for (item = head; item; item = item->next)
-	    xmpp_handlist_t *next = item->next;
+            item->enabled = 1;
 
-	    if (item->user_handler && !conn->authenticated) {
+        item = head;
-		item = next;
+        while (item) {
+            /* don't fire user handlers until authentication succeeds and
+               and skip newly added handlers */
+            if ((item->user_handler && !conn->authenticated) || !item->enabled) {
+                item = item->next;
                 continue;
             }
 
-	    if (!((xmpp_handler)(item->handler))(conn, stanza, item->userdata)) {
+            ret = ((xmpp_handler)(item->handler))(conn, stanza, item->userdata);
+            next = item->next;
+            if (!ret) {
                 /* handler is one-shot, so delete it */
-		if (prev)
+                head_old = head;
-		    prev->next = next;
+                _handler_item_remove(&head, item);
-		else {
+                if (head != head_old) {
-		    hash_drop(conn->id_handlers, id);
+                    /* replace old value */
-		    hash_add(conn->id_handlers, id, next);
+                    hash_add(conn->id_handlers, id, head);
                 }
-                xmpp_free(conn->ctx, item->id);
+                xmpp_free(conn->ctx, item->u.id);
                 xmpp_free(conn->ctx, item);
-		item = NULL;
             }
-	    if (item)
-		prev = item;
             item = next;
         }
     }
@@ -77,47 +106,34 @@ void handler_fire_stanza(xmpp_conn_t * const conn,
     for (item = conn->handlers; item; item = item->next)
         item->enabled = 1;
 
-    prev = NULL;
     item = conn->handlers;
     while (item) {
-	/* skip newly added handlers */
+        /* don't fire user handlers until authentication succeeds and
-	if (!item->enabled) {
+           skip newly added handlers */
-	    prev = item;
+        if ((item->user_handler && !conn->authenticated) || !item->enabled) {
             item = item->next;
             continue;
         }
 
-	/* don't call user handlers until authentication succeeds */
+        next = item->next;
-	if (item->user_handler && !conn->authenticated) {
+        if ((!item->u.ns || (ns && strcmp(ns, item->u.ns) == 0) ||
-	    prev = item;
+             xmpp_stanza_get_child_by_ns(stanza, item->u.ns)) &&
-	    item = item->next;
+            (!item->u.name || (name && strcmp(name, item->u.name) == 0)) &&
-	    continue;
+            (!item->u.type || (type && strcmp(type, item->u.type) == 0))) {
-	}
 
-	if ((!item->ns || (ns && strcmp(ns, item->ns) == 0) ||
+            ret = ((xmpp_handler)(item->handler))(conn, stanza, item->userdata);
-	     xmpp_stanza_get_child_by_ns(stanza, item->ns)) &&
+            /* list may be changed during execution of a handler */
-	    (!item->name || (name && strcmp(name, item->name) == 0)) &&
+            next = item->next;
-	    (!item->type || (type && strcmp(type, item->type) == 0)))
+            if (!ret) {
-	    if (!((xmpp_handler)(item->handler))(conn, stanza, item->userdata)) {
                 /* handler is one-shot, so delete it */
-		if (prev)
+                _handler_item_remove(&conn->handlers, item);
-		    prev->next = item->next;
+                if (item->u.ns) xmpp_free(conn->ctx, item->u.ns);
-		else
+                if (item->u.name) xmpp_free(conn->ctx, item->u.name);
-		    conn->handlers = item->next;
+                if (item->u.type) xmpp_free(conn->ctx, item->u.type);
-                if (item->ns) xmpp_free(conn->ctx, item->ns);
-                if (item->name) xmpp_free(conn->ctx, item->name);
-                if (item->type) xmpp_free(conn->ctx, item->type);
                 xmpp_free(conn->ctx, item);
-		item = NULL;
             }
-	
+        }
-	if (item) {
+        item = next;
-	    prev = item;
-	    item = item->next;
-	} else if (prev)
-	    item = prev->next;
-	else
-	    item = conn->handlers;
     }
 }
 
@@ -131,54 +147,53 @@ void handler_fire_stanza(xmpp_conn_t * const conn,
 uint64_t handler_fire_timed(xmpp_ctx_t * const ctx)
 {
     xmpp_connlist_t *connitem;
-    xmpp_handlist_t *handitem, *temp;
+    xmpp_handlist_t *item, *next;
-    int ret, fired;
+    xmpp_conn_t *conn;
     uint64_t elapsed, min;
+    uint64_t timestamp;
+    int ret;
 
     min = (uint64_t)(-1);
 
     connitem = ctx->connlist;
     while (connitem) {
-	if (connitem->conn->state != XMPP_STATE_CONNECTED) {
+        conn = connitem->conn;
+        if (conn->state != XMPP_STATE_CONNECTED) {
             connitem = connitem->next;
             continue;
         }
 
         /* enable all handlers that were added */
-	for (handitem = connitem->conn->timed_handlers; handitem;
+        for (item = conn->timed_handlers; item; item = item->next)
-	     handitem = handitem->next)
+            item->enabled = 1;
-	    handitem->enabled = 1;
 
-	handitem = connitem->conn->timed_handlers;
+        item = conn->timed_handlers;
-	while (handitem) {
+        while (item) {
-	    /* skip newly added handlers */
+            /* don't fire user handlers until authentication succeeds and
-	    if (!handitem->enabled) {
+               skip newly added handlers */
-		handitem = handitem->next;
+            if ((item->user_handler && !conn->authenticated) || !item->enabled) {
+                item = item->next;
                 continue;
             }
 
-	    /* only fire user handlers after authentication */
+            next = item->next;
-	    if (handitem->user_handler && !connitem->conn->authenticated) {
+            timestamp = time_stamp();
-		handitem = handitem->next;
+            elapsed = time_elapsed(item->u.last_stamp, timestamp);
-		continue;
+            if (elapsed >= item->u.period) {
-	    }
-
-	    fired = 0;
-	    elapsed = time_elapsed(handitem->last_stamp, time_stamp());
-	    if (elapsed >= handitem->period) {
                 /* fire! */
-		fired = 1;
+                item->u.last_stamp = timestamp;
-		handitem->last_stamp = time_stamp();
+                ret = ((xmpp_timed_handler)item->handler)(conn, item->userdata);
-		ret = ((xmpp_timed_handler)handitem->handler)(connitem->conn, handitem->userdata);
+                /* list may be changed during execution of a handler */
-	    } else if (min > (handitem->period - elapsed))
+                next = item->next;
-		min = handitem->period - elapsed;
+                if (!ret) {
-		
-	    temp = handitem;
-	    handitem = handitem->next;
-
                     /* delete handler if it returned false */
-	    if (fired && !ret)
+                    _handler_item_remove(&conn->timed_handlers, item);
-		xmpp_timed_handler_delete(connitem->conn, temp->handler);
+                    xmpp_free(conn->ctx, item);
+                }
+            } else if (min > (item->u.period - elapsed))
+                min = item->u.period - elapsed;
+
+            item = next;
         }
 
         connitem = connitem->next;
@@ -200,7 +215,7 @@ void handler_reset_timed(xmpp_conn_t *conn, int user_only)
     handitem = conn->timed_handlers;
     while (handitem) {
         if ((user_only && handitem->user_handler) || !user_only)
-	    handitem->last_stamp = time_stamp();
+            handitem->u.last_stamp = time_stamp();
 
         handitem = handitem->next;
     }
@@ -216,9 +231,11 @@ static void _timed_handler_add(xmpp_conn_t * const conn,
 
     /* check if handler is already in the list */
     for (item = conn->timed_handlers; item; item = item->next) {
-	if (item->handler == (void *)handler)
+        if (item->handler == handler && item->userdata == userdata) {
+            xmpp_warn(conn->ctx, "xmpp", "Timed handler already exists.");
             break;
         }
+    }
     if (item) return;
 
     /* build new item */
@@ -226,13 +243,13 @@ static void _timed_handler_add(xmpp_conn_t * const conn,
     if (!item) return;
 
     item->user_handler = user_handler;
-    item->handler = (void *)handler;
+    item->handler = handler;
     item->userdata = userdata;
     item->enabled = 0;
     item->next = NULL;
 
-    item->period = period;
+    item->u.period = period;
-    item->last_stamp = time_stamp();
+    item->u.last_stamp = time_stamp();
 
     /* append item to list */
     if (!conn->timed_handlers)
@@ -262,19 +279,18 @@ void xmpp_timed_handler_delete(xmpp_conn_t * const conn,
     prev = NULL;
     item = conn->timed_handlers;
     while (item) {
-	if (item->handler == (void *)handler)
+        if (item->handler == handler) {
-	    break;
-	prev = item;
-	item = item->next;
-    }
-
-    if (item) {
             if (prev)
                 prev->next = item->next;
             else
                 conn->timed_handlers = item->next;
 
             xmpp_free(conn->ctx, item);
+            item = prev ? prev->next : conn->timed_handlers;
+        } else {
+            prev = item;
+            item = item->next;
+        }
     }
 }
 
@@ -288,8 +304,10 @@ static void _id_handler_add(xmpp_conn_t * const conn,
     /* check if handler is already in the list */
     item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
     while (item) {
-	if (item->handler == (void *)handler)
+        if (item->handler == handler && item->userdata == userdata) {
+            xmpp_warn(conn->ctx, "xmpp", "Id handler already exists.");
             break;
+        }
         item = item->next;
     }
     if (item) return;
@@ -299,13 +317,13 @@ static void _id_handler_add(xmpp_conn_t * const conn,
     if (!item) return;
 
     item->user_handler = user_handler;
-    item->handler = (void *)handler;
+    item->handler = handler;
     item->userdata = userdata;
     item->enabled = 0;
     item->next = NULL;
 
-    item->id = xmpp_strdup(conn->ctx, id);
+    item->u.id = xmpp_strdup(conn->ctx, id);
-    if (!item->id) {
+    if (!item->u.id) {
         xmpp_free(conn->ctx, item);
         return;
     }
@@ -333,29 +351,30 @@ void xmpp_id_handler_delete(xmpp_conn_t * const conn,
                             xmpp_handler handler,
                             const char * const id)
 {
-    xmpp_handlist_t *item, *prev;
+    xmpp_handlist_t *item, *prev, *next;
 
     prev = NULL;
     item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
     if (!item) return;
 
     while (item) {
-	if (item->handler == (void *)handler)
+        next = item->next;
-	    break;
 
-	prev = item;
+        if (item->handler == handler) {
-	item = item->next;
-    }
-
-    if (item) {
             if (prev)
-	    prev->next = item->next;
+                prev->next = next;
             else {
                 hash_drop(conn->id_handlers, id);
-	    hash_add(conn->id_handlers, id, item->next);
+                hash_add(conn->id_handlers, id, next);
             }
-	xmpp_free(conn->ctx, item->id);
+
+            xmpp_free(conn->ctx, item->u.id);
             xmpp_free(conn->ctx, item);
+            item = next;
+        } else {
+            prev = item;
+            item = next;
+        }
     }
 }
 
@@ -371,9 +390,13 @@ static void _handler_add(xmpp_conn_t * const conn,
 
     /* check if handler already in list */
     for (item = conn->handlers; item; item = item->next) {
-	if (item->handler == (void *)handler)
+        /* same handler function can process different stanzas and
+           distinguish them according to userdata. */
+        if (item->handler == handler && item->userdata == userdata) {
+            xmpp_warn(conn->ctx, "xmpp", "Stanza handler already exists.");
             break;
         }
+    }
     if (item) return;
 
     /* build new item */
@@ -381,37 +404,37 @@ static void _handler_add(xmpp_conn_t * const conn,
     if (!item) return;
 
     item->user_handler = user_handler;
-    item->handler = (void *)handler;
+    item->handler = handler;
     item->userdata = userdata;
     item->enabled = 0;
     item->next = NULL;
 
     if (ns) {
-	item->ns = xmpp_strdup(conn->ctx, ns);
+        item->u.ns = xmpp_strdup(conn->ctx, ns);
-	if (!item->ns) {
+        if (!item->u.ns) {
             xmpp_free(conn->ctx, item);
             return;
         }
     } else
-	item->ns = NULL;
+        item->u.ns = NULL;
     if (name) {
-	item->name = xmpp_strdup(conn->ctx, name);
+        item->u.name = xmpp_strdup(conn->ctx, name);
-	if (!item->name) {
+        if (!item->u.name) {
-	    if (item->ns) xmpp_free(conn->ctx, item->ns);
+            if (item->u.ns) xmpp_free(conn->ctx, item->u.ns);
             xmpp_free(conn->ctx, item);
             return;
         }
     } else
-	item->name = NULL;
+        item->u.name = NULL;
     if (type) {
-	item->type = xmpp_strdup(conn->ctx, type);
+        item->u.type = xmpp_strdup(conn->ctx, type);
-	if (!item->type) {
+        if (!item->u.type) {
-	    if (item->ns) xmpp_free(conn->ctx, item->ns);
+            if (item->u.ns) xmpp_free(conn->ctx, item->u.ns);
-	    if (item->name) xmpp_free(conn->ctx, item->name);
+            if (item->u.name) xmpp_free(conn->ctx, item->u.name);
             xmpp_free(conn->ctx, item);
         }
     } else
-	item->type = NULL;
+        item->u.type = NULL;
 
     /* append to list */
     if (!conn->handlers)
@@ -441,23 +464,21 @@ void xmpp_handler_delete(xmpp_conn_t * const conn,
     prev = NULL;
     item = conn->handlers;
     while (item) {
-	if (item->handler == (void *)handler)
+        if (item->handler == handler) {
-	    break;
-	
-	prev = item;
-	item = item->next;
-    }
-
-    if (item) {
             if (prev)
                 prev->next = item->next;
             else
                 conn->handlers = item->next;
 
-	if (item->ns) xmpp_free(conn->ctx, item->ns);
+            if (item->u.ns) xmpp_free(conn->ctx, item->u.ns);
-	if (item->name) xmpp_free(conn->ctx, item->name);
+            if (item->u.name) xmpp_free(conn->ctx, item->u.name);
-	if (item->type) xmpp_free(conn->ctx, item->type);
+            if (item->u.type) xmpp_free(conn->ctx, item->u.type);
             xmpp_free(conn->ctx, item);
+            item = prev ? prev->next : conn->handlers;
+        } else {
+            prev = item;
+            item = item->next;
+        }
     }
 }
 
@@ -595,3 +616,75 @@ void handler_add(xmpp_conn_t * const conn,
 {
     _handler_add(conn, handler, ns, name, type, userdata, 0);
 }
+
+/** Delete all system handlers.
+ *  This function is used to reset conn object before re-connecting.
+ *
+ *  @param conn a Strophe connection object
+ */
+void handler_system_delete_all(xmpp_conn_t *conn)
+{
+    xmpp_handlist_t *item, *next, *head, *head_old;
+    hash_iterator_t *iter;
+    const char *key;
+    char *key2 = NULL;
+
+    /* TODO unify all kinds of handlers and avoid copy-paste below */
+
+    item = conn->handlers;
+    while (item) {
+        if (!item->user_handler) {
+            next = item->next;
+            _handler_item_remove(&conn->handlers, item);
+            if (item->u.ns) xmpp_free(conn->ctx, item->u.ns);
+            if (item->u.name) xmpp_free(conn->ctx, item->u.name);
+            if (item->u.type) xmpp_free(conn->ctx, item->u.type);
+            xmpp_free(conn->ctx, item);
+            item = next;
+        } else
+            item = item->next;
+    }
+
+    item = conn->timed_handlers;
+    while (item) {
+        if (!item->user_handler) {
+            next = item->next;
+            _handler_item_remove(&conn->timed_handlers, item);
+            xmpp_free(conn->ctx, item);
+            item = next;
+        } else
+            item = item->next;
+    }
+
+    iter = hash_iter_new(conn->id_handlers);
+    key = iter == NULL ? NULL : hash_iter_next(iter);
+    while (key != NULL) {
+        head = head_old = (xmpp_handlist_t *)hash_get(conn->id_handlers, key);
+        item = head;
+        while (item) {
+            if (!item->user_handler) {
+                next = item->next;
+                _handler_item_remove(&head, item);
+                xmpp_free(conn->ctx, item->u.id);
+                xmpp_free(conn->ctx, item);
+                item = next;
+            } else
+                item = item->next;
+        }
+        if (head != head_old)
+            key2 = xmpp_strdup(conn->ctx, key);
+        /* Hash table implementation is not perfect, so we need to find next
+           key before dropping current one. Otherwise, we will get access to
+           freed memory. */
+        key = hash_iter_next(iter);
+        if (head != head_old) {
+            /* hash_add() replaces value if the key exists */
+            if (head != NULL)
+                hash_add(conn->id_handlers, key2, head);
+            else
+                hash_drop(conn->id_handlers, key2);
+            xmpp_free(conn->ctx, key2);
+        }
+    }
+    if (iter) hash_iter_release(iter);
+}

src/hash.c

@@ -106,18 +106,35 @@ void hash_release(hash_t * const table)
 /** hash a key for our table lookup */
 static int _hash_key(hash_t *table, const char *key)
 {
-   int hash = 0;
+   unsigned hash = 0;
-   int shift = 0;
+   unsigned shift = 0;
-   const char *c = key;
+   const unsigned char *c = (const unsigned char *)key;
 
-   while (*c != '\0') {
+   while (*c != 0) {
 	/* assume 32 bit ints */
-	hash ^= ((int)*c++ << shift);
+	hash ^= ((unsigned)*c++ << shift);
 	shift += 8;
 	if (shift > 24) shift = 0;
    }
+   return hash % (unsigned)table->length;
+}
 
-   return hash % table->length;
+hashentry_t *_hash_entry_find(hash_t *table, const char *key)
+{
+   hashentry_t *entry;
+   int table_index = _hash_key(table, key);
+
+   /* look up the hash entry */
+   entry = table->entries[table_index];
+   while (entry != NULL) {
+	/* traverse the linked list looking for the key */
+	if (!strcmp(key, entry->key)) {
+	  /* match */
+          break;
+	}
+	entry = entry->next;
+   }
+   return entry;
 }
 
 /** add a key, value pair to a hash table.
@@ -130,9 +147,10 @@ int hash_add(hash_t *table, const char * const key, void *data)
    hashentry_t *entry = NULL;
    int table_index = _hash_key(table, key);
 
-   /* drop existing entry, if any */
+   /* find and replace existing entry, if any */
-   hash_drop(table, key);
+   entry = _hash_entry_find(table, key);
 
+   if (entry == NULL) {
       /* allocate and fill a new entry */
       entry = xmpp_alloc(ctx, sizeof(hashentry_t));
       if (!entry) return -1;
@@ -141,12 +159,15 @@ int hash_add(hash_t *table, const char * const key, void *data)
          xmpp_free(ctx, entry);
          return -1;
       }
-   entry->value = data;
       /* insert ourselves in the linked list */
-   /* TODO: this leaks duplicate keys */
       entry->next = table->entries[table_index];
       table->entries[table_index] = entry;
       table->num_keys++;
+   } else {
+      if (table->free) table->free(ctx, entry->value);
+   }
+
+   entry->value = data;
 
    return 0;
 }
@@ -155,22 +176,9 @@ int hash_add(hash_t *table, const char * const key, void *data)
 void *hash_get(hash_t *table, const char *key)
 {
    hashentry_t *entry;
-   int table_index = _hash_key(table, key);
-   void *result = NULL;
 
-   /* look up the hash entry */
+   entry = _hash_entry_find(table, key);
-   entry = table->entries[table_index];
+   return entry == NULL ? NULL : entry->value;
-   while (entry != NULL) {
-	/* traverse the linked list looking for the key */
-	if (!strcmp(key, entry->key)) {
-	  /* match */
-	  result = entry->value;
-	  return result;
-	}
-	entry = entry->next;
-   }
-   /* no match */
-   return result;
 }
 
 /** delete a key from a hash table */
@@ -235,7 +243,7 @@ void hash_iter_release(hash_iterator_t *iter)
 
     iter->ref--;
 
-    if (iter->ref <= 0) {
+    if (iter->ref == 0) { // ref is unsigned!!!
 	hash_release(iter->table);
 	xmpp_free(ctx, iter);
     }
@@ -273,4 +281,3 @@ const char * hash_iter_next(hash_iterator_t *iter)
     iter->entry = entry;
     return entry->key;
 }
-

src/jid.c

@@ -72,15 +72,13 @@ char *xmpp_jid_new(xmpp_ctx_t *ctx, const char *node,
 char *xmpp_jid_bare(xmpp_ctx_t *ctx, const char *jid)
 {
     char *result;
-    const char *c;
+    size_t len;
 
-    c = strchr(jid, '/');
+    len = strcspn(jid, "/");
-    if (c == NULL) return xmpp_strdup(ctx, jid);
+    result = xmpp_alloc(ctx, len + 1);
-
-    result = xmpp_alloc(ctx, c-jid+1);
     if (result != NULL) {
-	memcpy(result, jid, c-jid);
+	memcpy(result, jid, len);
-	result[c-jid] = '\0';
+	result[len] = '\0';
     }
 
     return result;
@@ -121,7 +119,8 @@ char *xmpp_jid_node(xmpp_ctx_t *ctx, const char *jid)
 char *xmpp_jid_domain(xmpp_ctx_t *ctx, const char *jid)
 {
     char *result = NULL;
-    const char *c,*s;
+    const char *c;
+    size_t dlen;
 
     c = strchr(jid, '@');
     if (c == NULL) {
@@ -131,15 +130,11 @@ char *xmpp_jid_domain(xmpp_ctx_t *ctx, const char *jid)
 	/* advance past the separator */
 	c++;
     }
-    s = strchr(c, '/');
+    dlen = strcspn(c, "/"); /* do not include resource */
-    if (s == NULL) {
+    result = xmpp_alloc(ctx, dlen + 1);
-	/* no resource */
-	s = c + strlen(c);
-    }
-    result = xmpp_alloc(ctx, (s-c) + 1);
     if (result != NULL) {
-	memcpy(result, c, (s-c));
+	memcpy(result, c, dlen);
-	result[s-c] = '\0';
+	result[dlen] = '\0';
     }
 
     return result;
@@ -155,20 +150,8 @@ char *xmpp_jid_domain(xmpp_ctx_t *ctx, const char *jid)
  */
 char *xmpp_jid_resource(xmpp_ctx_t *ctx, const char *jid)
 {
-    char *result = NULL;
     const char *c;
-    size_t len;
 
     c = strchr(jid, '/');
-    if (c != NULL)  {
+    return c != NULL ? xmpp_strdup(ctx, c + 1) : NULL;
-	c++;
-	len = strlen(c);
-	result = xmpp_alloc(ctx, len + 1);
-	if (result != NULL) {
-	    memcpy(result, c, len);
-	    result[len] = '\0';
-	}
-    }
-
-    return result;
 }

src/md5.c

@@ -43,8 +43,7 @@
         (cp)[3] = ((value) >> 24) & 0xFF; \
     } while(0)
 
-static void MD5Transform(uint32_t buf[4], const unsigned char inext[64],
+static void MD5Transform(uint32_t buf[4], const unsigned char inext[64]);
-                         struct MD5Context *ctx);
 
 /*
  * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
@@ -91,7 +90,7 @@ void MD5Update(struct MD5Context *ctx, unsigned char const *buf, uint32_t len)
             return;
         }
         memcpy(p, buf, t);
-        MD5Transform(ctx->buf, ctx->in, ctx);
+        MD5Transform(ctx->buf, ctx->in);
         buf += t;
         len -= t;
     }
@@ -99,7 +98,7 @@ void MD5Update(struct MD5Context *ctx, unsigned char const *buf, uint32_t len)
 
     while (len >= 64) {
         memcpy(ctx->in, buf, 64);
-        MD5Transform(ctx->buf, ctx->in, ctx);
+        MD5Transform(ctx->buf, ctx->in);
         buf += 64;
         len -= 64;
     }
@@ -133,7 +132,7 @@ void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
     if (count < 8) {
         /* Two lots of padding:  Pad the first block to 64 bytes */
         memset(p, 0, count);
-        MD5Transform(ctx->buf, ctx->in, ctx);
+        MD5Transform(ctx->buf, ctx->in);
 
         /* Now fill the next block with 56 bytes */
         memset(ctx->in, 0, 56);
@@ -146,7 +145,7 @@ void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
     PUT_32BIT_LSB_FIRST(ctx->in + 56, ctx->bits[0]);
     PUT_32BIT_LSB_FIRST(ctx->in + 60, ctx->bits[1]);
 
-    MD5Transform(ctx->buf, ctx->in, ctx);
+    MD5Transform(ctx->buf, ctx->in);
     PUT_32BIT_LSB_FIRST(digest, ctx->buf[0]);
     PUT_32BIT_LSB_FIRST(digest + 4, ctx->buf[1]);
     PUT_32BIT_LSB_FIRST(digest + 8, ctx->buf[2]);
@@ -180,8 +179,7 @@ void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
  * reflect the addition of 16 longwords of new data.  MD5Update blocks
  * the data and converts bytes into longwords for this routine.
  */
-static void MD5Transform(uint32_t buf[4], const unsigned char inext[64],
+static void MD5Transform(uint32_t buf[4], const unsigned char inext[64])
-                         struct MD5Context *ctx)
 {
     register uint32_t a, b, c, d, i;
     uint32_t in[16];

src/oocontext.cpp

@@ -82,4 +82,3 @@ void XMPP::Context::callLog(void * const userdata,
 {
     reinterpret_cast<Context *>(userdata)->log(level, area, msg);
 }
-

src/oostanza.cpp

@@ -75,5 +75,3 @@ Stanza *Stanza::copy()
     // TODO
     return NULL;
 }
-
-

src/parser_expat.c

@@ -19,12 +19,15 @@
 
 #include <expat.h>
 
-#include <strophe.h>
+#include "strophe.h"
 #include "common.h"
 #include "parser.h"
 
-/* Use the Unit Separator to delimit namespace and name in our XML*/
+/* Allocate inner text by this number bytes more. Expat splits string
-#define NAMESPACE_SEP ('\x1F')
+ * "new\nline" into 3 strings: "new" "\n" "line". Expecting this pattern,
+ * we can leave few bytes in the inner_text for "\n". It should reduce
+ * number of re-allocations in 2 times for multi-line texts. */
+#define INNER_TEXT_PADDING 2
 
 struct _parser_t {
     xmpp_ctx_t *ctx;
@@ -35,6 +38,51 @@ struct _parser_t {
     void *userdata;
     int depth;
     xmpp_stanza_t *stanza;
+    char* inner_text;
+    /* number of allocated bytes */
+    int inner_text_size;
+    /* excluding terminal '\0' */
+    int inner_text_used;
+};
+
+/* Use the Unit Separator to delimit namespace and name in our XML */
+const XML_Char namespace_sep = '\x1F';
+
+/*
+ * Cached strophe ctx. It is used for memory suite.
+ * Note, expat doesn't support userdata in memory suite, therefore,
+ * we can support only one strophe context. If user creates more than one
+ * context, this module will fallback to default library allocator for all
+ * contexts other than mem_ctx.
+ */
+static xmpp_ctx_t *mem_ctx = NULL;
+
+static void *parser_mem_malloc(size_t size)
+{
+    if (mem_ctx != NULL)
+        return xmpp_alloc(mem_ctx, size);
+    else
+        return NULL;
+}
+
+static void *parser_mem_realloc(void *ptr, size_t size)
+{
+    if (mem_ctx != NULL)
+        return xmpp_realloc(mem_ctx, ptr, size);
+    else
+        return NULL;
+}
+
+static void parser_mem_free(void *ptr)
+{
+    if (mem_ctx != NULL)
+        xmpp_free(mem_ctx, ptr);
+}
+
+static const XML_Memory_Handling_Suite parser_mem_suite = {
+    .malloc_fcn = &parser_mem_malloc,
+    .realloc_fcn = &parser_mem_realloc,
+    .free_fcn = &parser_mem_free,
 };
 
 /* return allocated string with the name from a delimited
@@ -45,7 +93,7 @@ static char *_xml_name(xmpp_ctx_t *ctx, const char *nsname)
     const char *c;
     size_t len;
 
-    c = strchr(nsname, NAMESPACE_SEP);
+    c = strchr(nsname, namespace_sep);
     if (c == NULL) return xmpp_strdup(ctx, nsname);
 
     c++;
@@ -65,7 +113,7 @@ static char *_xml_namespace(xmpp_ctx_t *ctx, const char *nsname)
     char *result = NULL;
     const char *c;
 
-    c = strchr(nsname, NAMESPACE_SEP);
+    c = strchr(nsname, namespace_sep);
     if (c != NULL) {
 	result = xmpp_alloc(ctx, (c-nsname) + 1);
 	if (result != NULL) {
@@ -92,6 +140,26 @@ static void _set_attributes(xmpp_stanza_t *stanza, const XML_Char **attrs)
     }
 }
 
+static void complete_inner_text(parser_t *parser)
+{
+    xmpp_stanza_t *stanza;
+
+    if (parser->inner_text) {
+        /* create and populate stanza */
+        stanza = xmpp_stanza_new(parser->ctx);
+        /* FIXME: disconnect on allocation error */
+        if (stanza) {
+            xmpp_stanza_set_text(stanza, parser->inner_text);
+            xmpp_stanza_add_child(parser->stanza, stanza);
+            xmpp_stanza_release(stanza);
+        }
+        xmpp_free(parser->ctx, parser->inner_text);
+        parser->inner_text = NULL;
+        parser->inner_text_size = 0;
+        parser->inner_text_used = 0;
+    }
+}
+
 static void _start_element(void *userdata,
                            const XML_Char *nsname,
                            const XML_Char **attrs)
@@ -106,7 +174,7 @@ static void _start_element(void *userdata,
     if (parser->depth == 0) {
         /* notify the owner */
         if (parser->startcb)
-            parser->startcb((char *)name, (char **)attrs, 
+            parser->startcb(name, (char **)attrs,
                             parser->userdata);
     } else {
         /* build stanzas at depth 1 */
@@ -125,6 +193,7 @@ static void _start_element(void *userdata,
                 xmpp_stanza_set_ns(child, ns);
 
             if (parser->stanza != NULL) {
+                complete_inner_text(parser);
                 xmpp_stanza_add_child(parser->stanza, child);
                 xmpp_stanza_release(child);
             }
@@ -149,6 +218,7 @@ static void _end_element(void *userdata, const XML_Char *name)
         if (parser->endcb)
             parser->endcb((char *)name, parser->userdata);
     } else {
+        complete_inner_text(parser);
         if (parser->stanza->parent) {
             /* we're finishing a child stanza, so set current to the parent */
             parser->stanza = parser->stanza->parent;
@@ -165,20 +235,29 @@ static void _end_element(void *userdata, const XML_Char *name)
 static void _characters(void *userdata, const XML_Char *s, int len)
 {
     parser_t *parser = (parser_t *)userdata;
-    xmpp_stanza_t *stanza;
+    char *p;
 
     if (parser->depth < 2) return;
 
-    /* create and populate stanza */
+    /* Join all parts to a single resulting string. Stanza is created in
-    stanza = xmpp_stanza_new(parser->ctx);
+     * _start_element() and _end_element(). */
-    if (!stanza) {
+    if (parser->inner_text_used + len >= parser->inner_text_size) {
-	/* FIXME: allocation error, disconnect */
+        parser->inner_text_size = parser->inner_text_used + len + 1 +
+                                  INNER_TEXT_PADDING;
+        p = xmpp_realloc(parser->ctx, parser->inner_text,
+                         parser->inner_text_size);
+        if (p == NULL) {
+            xmpp_free(parser->ctx, parser->inner_text);
+            parser->inner_text = NULL;
+            parser->inner_text_used = 0;
+            parser->inner_text_size = 0;
             return;
         }
-    xmpp_stanza_set_text_with_size(stanza, s, len);
+        parser->inner_text = p;
-
+        parser->inner_text[parser->inner_text_used] = '\0';
-    xmpp_stanza_add_child(parser->stanza, stanza);
+    }
-    xmpp_stanza_release(stanza);
+    parser->inner_text_used += len;
+    strncat(parser->inner_text, s, len);
 }
 
 parser_t *parser_new(xmpp_ctx_t *ctx,
@@ -199,6 +278,9 @@ parser_t *parser_new(xmpp_ctx_t *ctx,
         parser->userdata = userdata;
         parser->depth = 0;
         parser->stanza = NULL;
+        parser->inner_text = NULL;
+        parser->inner_text_size = 0;
+        parser->inner_text_used = 0;
 
         parser_reset(parser);
     }
@@ -217,23 +299,48 @@ void parser_free(parser_t *parser)
     if (parser->expat)
         XML_ParserFree(parser->expat);
 
+    if (parser->inner_text) {
+        xmpp_free (parser->ctx, parser->inner_text);
+        parser->inner_text = NULL;
+    }
+
     xmpp_free(parser->ctx, parser);
 }
 
 /* shuts down and restarts XML parser.  true on success */
 int parser_reset(parser_t *parser)
 {
-    if (parser->expat)
+    XML_Bool ret;
+    const XML_Memory_Handling_Suite *mem = NULL;
+
+    if (parser->expat) {
+        ret = XML_ParserReset(parser->expat, NULL);
+        if (ret != XML_TRUE) {
             XML_ParserFree(parser->expat);
+            parser->expat = NULL;
+        }
+    } else {
+        if (mem_ctx == NULL)
+            mem_ctx = parser->ctx;
+        if (parser->ctx == mem_ctx)
+            mem = &parser_mem_suite;
+        parser->expat = XML_ParserCreate_MM(NULL, mem, &namespace_sep);
+    }
 
-    if (parser->stanza) 
+    if (parser->stanza) {
         xmpp_stanza_release(parser->stanza);
+        parser->stanza = NULL;
+    }
 
-    parser->expat = XML_ParserCreateNS(NULL, NAMESPACE_SEP);
+    if (parser->inner_text) {
-    if (!parser->expat) return 0;
+        xmpp_free(parser->ctx, parser->inner_text);
+        parser->inner_text = NULL;
+    }
+
+    if (!parser->expat)
+        return 0;
 
     parser->depth = 0;
-    parser->stanza = NULL;
 
     XML_SetUserData(parser->expat, parser);
     XML_SetElementHandler(parser->expat, _start_element, _end_element);

src/parser_libxml2.c

@@ -20,7 +20,7 @@
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 
-#include <strophe.h>
+#include "strophe.h"
 #include "common.h"
 #include "parser.h"
 
@@ -116,11 +116,12 @@ static void _start_element(void *userdata,
 
     if (parser->depth == 0) {
         /* notify the owner */
-        if (parser->startcb)
+        if (parser->startcb) {
             cbattrs = _convert_attrs(parser, nattrs, attrs);
             parser->startcb((char *)name, cbattrs, 
                             parser->userdata);
             _free_cbattrs(parser, cbattrs);
+	}
     } else {
 	/* build stanzas at depth 1 */
 	if (!parser->stanza && parser->depth != 1) {
@@ -248,6 +249,8 @@ void parser_free(parser_t *parser)
 {
     if (parser->xmlctx)
         xmlFreeParserCtxt(parser->xmlctx);
+    if (parser->stanza)
+        xmpp_stanza_release(parser->stanza);
     xmpp_free(parser->ctx, parser);
 }
 
@@ -256,18 +259,16 @@ int parser_reset(parser_t *parser)
 {
     if (parser->xmlctx)
         xmlFreeParserCtxt(parser->xmlctx);
-
     if (parser->stanza) 
 	xmpp_stanza_release(parser->stanza);
 
+    parser->stanza = NULL;
+    parser->depth = 0;
+
     parser->xmlctx = xmlCreatePushParserCtxt(&parser->handlers, 
                                              parser, NULL, 0, NULL);
-    if (!parser->xmlctx) return 0;
 
-    parser->depth = 0;
+    return parser->xmlctx ? 1 : 0;
-    parser->stanza = NULL;
-
-    return 1;
 }
 
 /* feed a chunk of data to the parser */
@@ -275,9 +276,5 @@ int parser_feed(parser_t *parser, char *chunk, int len)
 {
     /* xmlParseChunk API returns 0 on success which is opposite logic to
        the status returned by parser_feed */
-    if(!xmlParseChunk(parser->xmlctx, chunk, len, 0)) {
+    return !xmlParseChunk(parser->xmlctx, chunk, len, 0);
-        return 1;
-    } else {
-        return 0;
-    }
 }

src/rand.c

@@ -127,8 +127,10 @@ static void Hash_DRBG_Instantiate(Hash_DRBG_CTX *ctx,
 
     assert(entropy_input_len <= ENTROPY_MAX);
     assert(nonce_len <= NONCE_MAX);
+    assert(nonce != NULL || nonce_len == 0);
 
     memcpy(seed_material, entropy_input, entropy_input_len);
+    if (nonce != NULL)
         memcpy(seed_material + entropy_input_len, nonce, nonce_len);
     Hash_df(seed_material, entropy_input_len + nonce_len, seed, seedlen);
     seed0[0] = 0;
@@ -287,25 +289,32 @@ int xmpp_rand(xmpp_rand_t *rand)
     return result;
 }
 
+static void rand_byte2hex(unsigned char byte, char *hex)
+{
+    static const char hex_tbl[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
+                                      '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+
+    hex[0] = hex_tbl[(byte >> 4) & 0x0f];
+    hex[1] = hex_tbl[byte & 0x0f];
+}
+
 void xmpp_rand_nonce(xmpp_rand_t *rand, char *output, size_t len)
 {
     size_t i;
-    size_t rand_len = len / 2;
+    const size_t rand_len = len / 2;
-#ifndef _MSC_VER
-    unsigned char rand_buf[rand_len];
-#else
-    unsigned char *rand_buf = (unsigned char *)_alloca(rand_len);
-#endif
 
-    /* current implementation returns printable HEX representation of
+    /*
-     * a random buffer, however base64 encoding can be used instead;
+     * We don't want to use any allocation here, because this function
-     * the only problem is that base64_encode() allocates memory and
+     * can't fail. Also we want to avoid VLA.
-     * as result can fail.
+     * Current implementation uses half of the output buffer for random buffer
+     * generation and then converts it to HEX representation.
      */
 
-    xmpp_rand_bytes(rand, rand_buf, rand_len);
+    if (rand_len > 0) {
-    for (i = 0; i < rand_len; ++i) {
+        xmpp_rand_bytes(rand, (unsigned char *)output, rand_len);
-        xmpp_snprintf(output + i * 2, len, "%02x", rand_buf[i]);
+        for (i = rand_len; i > 0; --i)
-        len -= 2;
+            rand_byte2hex(output[i - 1], &output[(i - 1) * 2]);
     }
+    if (len > 0)
+        output[len - 1] = '\0';
 }

src/rand.h

@@ -36,7 +36,7 @@ xmpp_rand_t *xmpp_rand_new(xmpp_ctx_t *ctx);
  */
 void xmpp_rand_free(xmpp_ctx_t *ctx, xmpp_rand_t *rand);
 
-/** Generate random integer
+/** Generate random integer.
  *  Analogue of rand(3).
  *
  *  @ingroup Random

src/resolver.c

@@ -1,4 +1,4 @@
-/* resolver.h
+/* resolver.c
  * strophe XMPP client library -- DNS resolver
  *
  * Copyright (C) 2015 Dmitry Podgorny <pasis.ua@gmail.com>
@@ -13,11 +13,23 @@
  *  DNS resolver.
  */
 
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(HAVE_CARES)
 #include <netinet/in.h>
 #include <arpa/nameser.h>
 #include <resolv.h>             /* res_query */
-#endif /* _WIN32 */
+#endif /* _WIN32 && HAVE_CARES */
+
+#ifdef HAVE_CARES
+#include <ares.h>
+/* for select(2) */
+#ifdef _WIN32
+#include <winsock2.h>
+#else /* _WIN32 */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#endif /* !_WIN32 */
+#endif /* HAVE_CARES */
 
 #include <string.h>             /* strncpy */
 
@@ -31,6 +43,189 @@
 #define MESSAGE_T_SRV 33
 #define MESSAGE_C_IN 1
 
+/*******************************************************************************
+ * Forward declarations.
+ ******************************************************************************/
+
+#ifdef HAVE_CARES
+static int resolver_ares_srv_lookup_buf(xmpp_ctx_t *ctx,
+                                        const unsigned char *buf,
+                                        size_t len,
+                                        resolver_srv_rr_t **srv_rr_list);
+static int resolver_ares_srv_lookup(xmpp_ctx_t *ctx, const char *fulldomain,
+                                    resolver_srv_rr_t **srv_rr_list);
+#endif /* HAVE_CARES */
+
+#ifndef HAVE_CARES
+static int resolver_raw_srv_lookup_buf(xmpp_ctx_t *ctx,
+                                       const unsigned char *buf,
+                                       size_t len,
+                                       resolver_srv_rr_t **srv_rr_list);
+#endif /* !HAVE_CARES */
+
+#ifdef _WIN32
+static int resolver_win32_srv_lookup(xmpp_ctx_t *ctx, const char *fulldomain,
+                                     resolver_srv_rr_t **srv_rr_list);
+static int resolver_win32_srv_query(const char *fulldomain,
+                                    unsigned char *buf, size_t len);
+#endif /* _WIN32 */
+
+/*******************************************************************************
+ * Implementation.
+ ******************************************************************************/
+
+void resolver_initialize(void)
+{
+#ifdef HAVE_CARES
+    ares_library_init(ARES_LIB_INIT_ALL);
+#endif
+}
+
+void resolver_shutdown(void)
+{
+#ifdef HAVE_CARES
+    ares_library_cleanup();
+#endif
+}
+
+static void resolver_srv_list_sort(resolver_srv_rr_t **srv_rr_list)
+{
+    resolver_srv_rr_t *rr_head;
+    resolver_srv_rr_t *rr_current;
+    resolver_srv_rr_t *rr_next;
+    resolver_srv_rr_t *rr_prev;
+    int swap;
+
+    rr_head = *srv_rr_list;
+
+    if ((rr_head == NULL) || (rr_head->next == NULL)) {
+        /* Empty or single record list */
+        return;
+    }
+
+    do {
+        rr_prev = NULL;
+        rr_current = rr_head;
+        rr_next = rr_head->next;
+        swap = 0;
+        while (rr_next != NULL) {
+            /*
+             * RFC2052: A client MUST attempt to contact the target host
+             * with the lowest-numbered priority it can reach.
+             * RFC2052: When selecting a target host among the
+             * those that have the same priority, the chance of trying
+             * this one first SHOULD be proportional to its weight.
+             */
+            if ((rr_current->priority > rr_next->priority) ||
+                (rr_current->priority == rr_next->priority &&
+                 rr_current->weight < rr_next->weight))
+            {
+                /* Swap node */
+                swap = 1;
+                if (rr_prev != NULL) {
+                    rr_prev->next = rr_next;
+                } else {
+                    /* Swap head node */
+                    rr_head = rr_next;
+                }
+                rr_current->next = rr_next->next;
+                rr_next->next = rr_current;
+
+                rr_prev = rr_next;
+                rr_next = rr_current->next;
+            } else {
+                /* Next node */
+                rr_prev = rr_current;
+                rr_current = rr_next;
+                rr_next = rr_next->next;
+            }
+        }
+    } while (swap != 0);
+
+    *srv_rr_list = rr_head;
+}
+
+int resolver_srv_lookup_buf(xmpp_ctx_t *ctx, const unsigned char *buf,
+                            size_t len, resolver_srv_rr_t **srv_rr_list)
+{
+    int set;
+
+#ifdef HAVE_CARES
+    set = resolver_ares_srv_lookup_buf(ctx, buf, len, srv_rr_list);
+#else
+    set = resolver_raw_srv_lookup_buf(ctx, buf, len, srv_rr_list);
+#endif
+    resolver_srv_list_sort(srv_rr_list);
+
+    return set;
+}
+
+int resolver_srv_lookup(xmpp_ctx_t *ctx, const char *service, const char *proto,
+                        const char *domain, resolver_srv_rr_t **srv_rr_list)
+{
+#define RESOLVER_BUF_MAX 65536
+    unsigned char *buf;
+    char fulldomain[2048];
+    int len;
+    int set = XMPP_DOMAIN_NOT_FOUND;
+
+    (void)buf;
+    (void)len;
+
+    xmpp_snprintf(fulldomain, sizeof(fulldomain),
+                  "_%s._%s.%s", service, proto, domain);
+
+    *srv_rr_list = NULL;
+
+#ifdef HAVE_CARES
+    set = resolver_ares_srv_lookup(ctx, fulldomain, srv_rr_list);
+#else /* HAVE_CARES */
+
+#ifdef _WIN32
+    set = resolver_win32_srv_lookup(ctx, fulldomain, srv_rr_list);
+    if (set == XMPP_DOMAIN_FOUND)
+        return set;
+#endif /* _WIN32 */
+
+    buf = xmpp_alloc(ctx, RESOLVER_BUF_MAX);
+    if (buf == NULL)
+        return XMPP_DOMAIN_NOT_FOUND;
+
+#ifdef _WIN32
+    len = resolver_win32_srv_query(fulldomain, buf, RESOLVER_BUF_MAX);
+#else /* _WIN32 */
+    len = res_query(fulldomain, MESSAGE_C_IN, MESSAGE_T_SRV, buf,
+                    RESOLVER_BUF_MAX);
+#endif /* _WIN32 */
+
+    if (len > 0)
+        set = resolver_srv_lookup_buf(ctx, buf, (size_t)len, srv_rr_list);
+
+    xmpp_free(ctx, buf);
+
+#endif /* HAVE_CARES */
+
+    return set;
+}
+
+void resolver_srv_free(xmpp_ctx_t *ctx, resolver_srv_rr_t *srv_rr_list)
+{
+    resolver_srv_rr_t *rr;
+
+    while (srv_rr_list != NULL) {
+        rr = srv_rr_list->next;
+        xmpp_free(ctx, srv_rr_list);
+        srv_rr_list = rr;
+    }
+}
+
+#ifndef HAVE_CARES
+/*******************************************************************************
+ * Resolver raw implementation.
+ *
+ * This code is common for both unix and win32.
+ ******************************************************************************/
+
 struct message_header {
     uint16_t id;
     uint8_t octet2;
@@ -41,13 +236,6 @@ struct message_header {
     uint16_t arcount;
 };
 
-#ifdef _WIN32
-static int resolver_win32_srv_lookup(xmpp_ctx_t *ctx, const char *fulldomain,
-                                     resolver_srv_rr_t **srv_rr_list);
-static int resolver_win32_srv_query(const char *fulldomain,
-                                    unsigned char *buf, size_t len);
-#endif /* _WIN32 */
-
 /* the same as ntohs(), but receives pointer to the value */
 static uint16_t xmpp_ntohs_ptr(const void *ptr)
 {
@@ -80,7 +268,7 @@ static size_t message_name_append_safe(char *name, size_t name_len,
     copy_len = name_max > name_len ? name_max - name_len : 0;
     copy_len = xmpp_min(tail_len, copy_len);
     if (copy_len > 0)
-        strncpy(&name[name_len], tail, copy_len);
+        memcpy(&name[name_len], tail, copy_len);
 
     return name_len + tail_len;
 }
@@ -160,63 +348,6 @@ static unsigned message_name_len(const unsigned char *buf, size_t buf_len,
     return message_name_get(buf, buf_len, buf_offset, NULL, SIZE_MAX);
 }
 
-static void resolver_srv_list_sort(resolver_srv_rr_t **srv_rr_list)
-{
-    resolver_srv_rr_t * rr_head;
-    resolver_srv_rr_t * rr_current;
-    resolver_srv_rr_t * rr_next;
-    resolver_srv_rr_t * rr_prev;
-    int swap;
-
-    rr_head = *srv_rr_list;
-
-    if ((rr_head == NULL) || (rr_head->next == NULL)) {
-        /* Empty or single record list */
-        return;
-    }
-
-    do {
-        rr_prev = NULL;
-        rr_current = rr_head;
-        rr_next = rr_head->next;
-        swap = 0;
-        while (rr_next != NULL) {
-            /*
-             * RFC2052: A client MUST attempt to contact the target host
-             * with the lowest-numbered priority it can reach.
-             * RFC2052: When selecting a target host among the
-             * those that have the same priority, the chance of trying
-             * this one first SHOULD be proportional to its weight.
-             */
-            if ((rr_current->priority > rr_next->priority) ||
-                (rr_current->priority == rr_next->priority &&
-                 rr_current->weight < rr_next->weight))
-            {
-                /* Swap node */
-                swap = 1;
-                if (rr_prev != NULL) {
-                    rr_prev->next = rr_next;
-                } else {
-                    /* Swap head node */
-                    rr_head = rr_next;
-                }
-                rr_current->next = rr_next->next;
-                rr_next->next = rr_current;
-
-                rr_prev = rr_next;
-                rr_next = rr_current->next;
-            } else {
-                /* Next node */
-                rr_prev = rr_current;
-                rr_current = rr_next;
-                rr_next = rr_next->next;
-            }
-        }
-    } while (swap != 0);
-
-    *srv_rr_list = rr_head;
-}
-
 #define BUF_OVERFLOW_CHECK(ptr, len) do {         \
     if ((ptr) >= (len)) {                         \
         if (*srv_rr_list != NULL)                 \
@@ -226,8 +357,10 @@ static void resolver_srv_list_sort(resolver_srv_rr_t **srv_rr_list)
     }                                             \
 } while (0)
 
-int resolver_srv_lookup_buf(xmpp_ctx_t *ctx, const unsigned char *buf,
+static int resolver_raw_srv_lookup_buf(xmpp_ctx_t *ctx,
-                            size_t len, resolver_srv_rr_t **srv_rr_list)
+                                       const unsigned char *buf,
+                                       size_t len,
+                                       resolver_srv_rr_t **srv_rr_list)
 {
     unsigned i;
     unsigned j;
@@ -292,52 +425,110 @@ int resolver_srv_lookup_buf(xmpp_ctx_t *ctx, const unsigned char *buf,
         }
         j += rdlength;
     }
-    resolver_srv_list_sort(srv_rr_list);
 
     return *srv_rr_list != NULL ? XMPP_DOMAIN_FOUND : XMPP_DOMAIN_NOT_FOUND;
 }
 
-int resolver_srv_lookup(xmpp_ctx_t *ctx, const char *service, const char *proto,
+#endif /* !HAVE_CARES */
-                        const char *domain, resolver_srv_rr_t **srv_rr_list)
-{
-    char fulldomain[2048];
-    unsigned char buf[65535];
-    int len;
-    int set = XMPP_DOMAIN_NOT_FOUND;
 
-    xmpp_snprintf(fulldomain, sizeof(fulldomain),
+#ifdef HAVE_CARES
-                  "_%s._%s.%s", service, proto, domain);
+/*******************************************************************************
+ * Resolver implementation using c-ares library.
+ ******************************************************************************/
+
+struct resolver_ares_ctx {
+    xmpp_ctx_t *ctx;
+    int result;
+    resolver_srv_rr_t *srv_rr_list;
+};
+
+static int resolver_ares_srv_lookup_buf(xmpp_ctx_t *ctx,
+                                        const unsigned char *buf,
+                                        size_t len,
+                                        resolver_srv_rr_t **srv_rr_list)
+{
+    struct ares_srv_reply *srv;
+    struct ares_srv_reply *item;
+    resolver_srv_rr_t *rr;
+    int rc;
 
     *srv_rr_list = NULL;
 
-#ifdef _WIN32
+    rc = ares_parse_srv_reply(buf, len, &srv);
-    set = resolver_win32_srv_lookup(ctx, fulldomain, srv_rr_list);
+    if (rc != ARES_SUCCESS)
-    if (set == XMPP_DOMAIN_FOUND)
+        return XMPP_DOMAIN_NOT_FOUND;
-        return set;
-    len = resolver_win32_srv_query(fulldomain, buf, sizeof(buf));
-#else /* _WIN32 */
-    len = res_query(fulldomain, MESSAGE_C_IN, MESSAGE_T_SRV, buf, sizeof(buf));
-#endif /* _WIN32 */
 
-    if (len > 0)
+    item = srv;
-        set = resolver_srv_lookup_buf(ctx, buf, (size_t)len, srv_rr_list);
+    while (item != NULL) {
+        rr = xmpp_alloc(ctx, sizeof(*rr));
+        if (rr == NULL)
+            break;
+        rr->next = *srv_rr_list;
+        rr->priority = item->priority;
+        rr->weight = item->weight;
+        rr->port = item->port;
+        strncpy(rr->target, item->host, sizeof(rr->target) - 1);
+        rr->target[sizeof(rr->target) - 1] = '\0';
+        *srv_rr_list = rr;
+        item = item->next;
+    }
+    ares_free_data(srv);
 
-    return set;
+    return *srv_rr_list == NULL ? XMPP_DOMAIN_NOT_FOUND : XMPP_DOMAIN_FOUND;
 }
 
-void resolver_srv_free(xmpp_ctx_t *ctx, resolver_srv_rr_t *srv_rr_list)
+static void ares_srv_lookup_callback(void *arg, int status, int timeouts,
+                                     unsigned char *buf, int len)
 {
-    resolver_srv_rr_t *rr;
+    struct resolver_ares_ctx *actx = arg;
 
-    while (srv_rr_list != NULL) {
+    if (status != ARES_SUCCESS)
-        rr = srv_rr_list->next;
+        actx->result = XMPP_DOMAIN_NOT_FOUND;
-        xmpp_free(ctx, srv_rr_list);
+    else
-        srv_rr_list = rr;
+        actx->result = resolver_ares_srv_lookup_buf(actx->ctx, buf, len,
+                                                    &actx->srv_rr_list);
 }
+
+static int resolver_ares_srv_lookup(xmpp_ctx_t *ctx, const char *fulldomain,
+                                    resolver_srv_rr_t **srv_rr_list)
+{
+    struct resolver_ares_ctx actx;
+    ares_channel chan;
+    struct timeval tv;
+    struct timeval *tvp;
+    fd_set rfds;
+    fd_set wfds;
+    int nfds;
+    int rc;
+
+    actx.ctx = ctx;
+    actx.result = XMPP_DOMAIN_NOT_FOUND;
+    actx.srv_rr_list = NULL;
+
+    rc = ares_init(&chan);
+    if (rc == ARES_SUCCESS) {
+        ares_query(chan, fulldomain, MESSAGE_C_IN, MESSAGE_T_SRV,
+                   ares_srv_lookup_callback, &actx);
+        while (1) {
+            FD_ZERO(&rfds);
+            FD_ZERO(&wfds);
+            nfds = ares_fds(chan, &rfds, &wfds);
+            if (nfds == 0)
+                break;
+            tvp = ares_timeout(chan, NULL, &tv);
+            select(nfds, &rfds, &wfds, NULL, tvp);
+            ares_process(chan, &rfds, &wfds);
         }
+        ares_destroy(chan);
+    }
+
+    *srv_rr_list = actx.srv_rr_list;
+    return actx.result;
+}
+
+#endif /* HAVE_CARES */
 
 #ifdef _WIN32
-
 /*******************************************************************************
  * Next part was copied from sock.c and contains old win32 code.
  *
@@ -431,7 +622,7 @@ static void netbuf_add_domain_name(unsigned char *buf, int buflen, int *offset,
 
 	*p++ = '\0';
 
-	*offset += p - start;
+	*offset += (int)(p - start);
 }
 
 static void netbuf_add_dnsquery_header(unsigned char *buf, int buflen, int *offset, struct dnsquery_header *header)
@@ -470,21 +661,21 @@ static int resolver_win32_srv_lookup(xmpp_ctx_t *ctx, const char *fulldomain,
     resolver_srv_rr_t *rr;
     HINSTANCE hdnsapi = NULL;
 
-    DNS_STATUS (WINAPI * pDnsQuery_A)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD*, PVOID*);
+    DNS_STATUS (WINAPI * pDnsQuery_A)(PCSTR, WORD, DWORD, PIP4_ARRAY, DNS_RECORDA**, PVOID*);
-    void (WINAPI * pDnsRecordListFree)(PDNS_RECORD, DNS_FREE_TYPE);
+    void (WINAPI * pDnsRecordListFree)(DNS_RECORDA*, DNS_FREE_TYPE);
 
     if (hdnsapi = LoadLibrary("dnsapi.dll")) {
         pDnsQuery_A = (void *)GetProcAddress(hdnsapi, "DnsQuery_A");
         pDnsRecordListFree = (void *)GetProcAddress(hdnsapi, "DnsRecordListFree");
 
         if (pDnsQuery_A && pDnsRecordListFree) {
-            PDNS_RECORD dnsrecords = NULL;
+            DNS_RECORDA *dnsrecords = NULL;
             DNS_STATUS error;
 
             error = pDnsQuery_A(fulldomain, DNS_TYPE_SRV, DNS_QUERY_STANDARD, NULL, &dnsrecords, NULL);
 
             if (error == 0) {
-                PDNS_RECORD current = dnsrecords;
+                DNS_RECORDA *current = dnsrecords;
 
                 while (current) {
                     if (current->wType == DNS_TYPE_SRV) {
@@ -517,7 +708,7 @@ static int resolver_win32_srv_query(const char *fulldomain,
                                     unsigned char *buf, size_t len)
 {
     int set = 0;
-    int insize;
+    int insize = 0;
 
     /* if dnsapi didn't work/isn't there, try querying the dns server manually */
     if (!set)
@@ -550,7 +741,7 @@ static int resolver_win32_srv_query(const char *fulldomain,
 				char buffer[65535];
 
 				len = 65535;
-				fi = buffer;
+				fi = (FIXED_INFO *)buffer;
 
 				if ((error = pGetNetworkParams(fi, &len)) == ERROR_SUCCESS)
 				{
@@ -711,14 +902,14 @@ static int resolver_win32_srv_query(const char *fulldomain,
 		header.rd = 1;
 		header.qdcount = 1;
 
-		netbuf_add_dnsquery_header(buf, len, &offset, &header);
+		netbuf_add_dnsquery_header(buf, (int)len, &offset, &header);
 
 		memset(&question, 0, sizeof(question));
 		strncpy(question.qname, fulldomain, 1024);
 		question.qtype = 33; /* SRV */
 		question.qclass = 1; /* INTERNET! */
 
-		netbuf_add_dnsquery_question(buf, len, &offset, &question);
+		netbuf_add_dnsquery_question(buf, (int)len, &offset, &question);
 
 		insize = 0;
 		for (i = 0; i < numdnsservers && insize <= 0; i++)
@@ -736,7 +927,7 @@ static int resolver_win32_srv_query(const char *fulldomain,
 			sendto(sock, (char *)buf, offset, 0, (struct sockaddr *)&dnsaddr, addrlen);
 			for (j = 0; j < 50; j++)
 			{
-				insize = recvfrom(sock, (char *)buf, len, 0, (struct sockaddr *)&dnsaddr, &addrlen);
+				insize = recvfrom(sock, (char *)buf, (int)len, 0, (struct sockaddr *)&dnsaddr, &addrlen);
 				if (insize == SOCKET_ERROR)
 				{
 					if (sock_error() == WSAEWOULDBLOCK)

src/resolver.h

@@ -33,6 +33,9 @@ typedef struct resolver_srv_rr_struc {
     struct resolver_srv_rr_struc *next;
 } resolver_srv_rr_t;
 
+void resolver_initialize(void);
+void resolver_shutdown(void);
+
 /** Perform lookup for RFC1035 message format.
  *  This function allocates all elements.
  *

src/sasl.c

@@ -264,6 +264,7 @@ char *sasl_digest_md5(xmpp_ctx_t *ctx, const char *challenge,
     xmpp_rand_nonce(ctx->rand, cnonce, sizeof(cnonce));
     hash_add(table, "cnonce", xmpp_strdup(ctx, cnonce));
     hash_add(table, "nc", xmpp_strdup(ctx, "00000001"));
+    if (hash_get(table, "qop") == NULL)
         hash_add(table, "qop", xmpp_strdup(ctx, "auth"));
     value = xmpp_alloc(ctx, 5 + strlen(domain) + 1);
     memcpy(value, "xmpp/", 5);

src/sha1.c

@@ -197,8 +197,9 @@ void crypto_SHA1_Update(SHA1_CTX* context, const uint8_t* data,
     size_t i, j;
 
     j = (context->count[0] >> 3) & 63;
-    if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
+    if ((context->count[0] += (uint32_t)len << 3) < ((uint32_t)len << 3))
-    context->count[1] += (len >> 29);
+        context->count[1]++;
+    context->count[1] += (uint32_t)(len >> 29);
     if ((j + len) > 63) {
         memcpy(&context->buffer[j], data, (i = 64-j));
         SHA1_Transform(context->state, context->buffer);
@@ -233,7 +234,6 @@ void crypto_SHA1_Final(SHA1_CTX* context, uint8_t* digest)
     }
     
     /* Wipe variables */
-    i = 0;
     memset(context->buffer, 0, 64);
     memset(context->state, 0, 20);
     memset(context->count, 0, 8);

src/snprintf.c

@@ -286,6 +286,7 @@ static int dopr (char *buffer, size_t maxlen, const char *format, va_list args)
 	break;
       case 'X':
 	flags |= DP_F_UP;
+	//-fallthrough
       case 'x':
 	flags |= DP_F_UNSIGNED;
 	if (cflags == DP_C_SHORT)
@@ -306,6 +307,7 @@ static int dopr (char *buffer, size_t maxlen, const char *format, va_list args)
 	break;
       case 'E':
 	flags |= DP_F_UP;
+	//-fallthrough
       case 'e':
 	if (cflags == DP_C_LDOUBLE)
 	  fvalue = va_arg (args, LDOUBLE);
@@ -314,6 +316,7 @@ static int dopr (char *buffer, size_t maxlen, const char *format, va_list args)
 	break;
       case 'G':
 	flags |= DP_F_UP;
+	//-fallthrough
       case 'g':
 	if (cflags == DP_C_LDOUBLE)
 	  fvalue = va_arg (args, LDOUBLE);

src/sock.c

@@ -158,38 +158,33 @@ int sock_close(const sock_t sock)
 #endif
 }
 
-int sock_set_blocking(const sock_t sock)
+static int _sock_set_blocking_mode(sock_t sock, int blocking)
 {
 #ifdef _WIN32
-    u_long block = 0;
+    u_long nonblock = blocking ? 0 : 1;
-    return ioctlsocket(sock, FIONBIO, &block);
-#else
-    int rc;
-
-    rc = fcntl(sock, F_GETFL, NULL);
-    if (rc >= 0) {
-        rc = fcntl(sock, F_SETFL, rc & (~O_NONBLOCK));
-    }
-    return rc;
-#endif
-}
-
-int sock_set_nonblocking(const sock_t sock)
-{
-#ifdef _WIN32
-    u_long nonblock = 1;
     return ioctlsocket(sock, FIONBIO, &nonblock);
 #else
     int rc;
 
     rc = fcntl(sock, F_GETFL, NULL);
     if (rc >= 0) {
-        rc = fcntl(sock, F_SETFL, rc | O_NONBLOCK);
+        rc = blocking ? rc & (~O_NONBLOCK) : rc | O_NONBLOCK;
+        rc = fcntl(sock, F_SETFL, rc);
     }
     return rc;
 #endif
 }
 
+int sock_set_blocking(const sock_t sock)
+{
+    return _sock_set_blocking_mode(sock, 1);
+}
+
+int sock_set_nonblocking(const sock_t sock)
+{
+    return _sock_set_blocking_mode(sock, 0);
+}
+
 int sock_read(const sock_t sock, void * const buff, const size_t len)
 {
     return recv(sock, buff, len, 0);

src/stanza.c

@@ -76,35 +76,27 @@ xmpp_stanza_t *xmpp_stanza_clone(xmpp_stanza_t * const stanza)
 static int _stanza_copy_attributes(xmpp_stanza_t * dst,
                                    const xmpp_stanza_t * const src)
 {
-    hash_iterator_t *iter = NULL;
+    hash_iterator_t *iter;
     const char *key;
-    void *val;
+    const char *val;
+    int rc = XMPP_EOK;
 
-    dst->attributes = hash_new(src->ctx, 8, xmpp_free);
-    if (!dst->attributes)
-        return -1;
     iter = hash_iter_new(src->attributes);
-    if (!iter)
+    if (!iter) rc = XMPP_EMEM;
-        goto error;
-    while ((key = hash_iter_next(iter))) {
-        val = xmpp_strdup(src->ctx,
-                          (char *)hash_get(src->attributes, key));
-        if (!val)
-            goto error;
 
-        if (hash_add(dst->attributes, key, val)) {
+    while (rc == XMPP_EOK && (key = hash_iter_next(iter))) {
-            xmpp_free(src->ctx, val);
+        val = hash_get(src->attributes, key);
-            goto error;
+        if (!val) rc = XMPP_EINT;
-        }
+        if (rc == XMPP_EOK)
+            rc = xmpp_stanza_set_attribute(dst, key, val);
     }
     hash_iter_release(iter);
-    return 0;
 
-error:
+    if (rc != XMPP_EOK && dst->attributes) {
-    if (iter != NULL)
-        hash_iter_release(iter);
         hash_release(dst->attributes);
-    return -1;
+        dst->attributes = NULL;
+    }
+    return rc;
 }
 
 /** Copy a stanza and its children.
@@ -196,6 +188,19 @@ int xmpp_stanza_release(xmpp_stanza_t * const stanza)
     return released;
 }
 
+/** Get the strophe context that the stanza is associated with.
+ *
+ *  @param stanza a Strophe stanza object
+ *
+ *  @return a Strophe context
+ *
+ *  @ingroup Stanza
+ */
+xmpp_ctx_t *xmpp_stanza_get_context(const xmpp_stanza_t * const stanza)
+{
+    return stanza->ctx;
+}
+
 /** Determine if a stanza is a text node.
  *  
  *  @param stanza a Strophe stanza object
@@ -352,10 +357,16 @@ static int _render_stanza_recursive(xmpp_stanza_t *stanza,
                 }
                 tmp = _escape_xml(stanza->ctx,
                     (char *)hash_get(stanza->attributes, key));
-		if (tmp == NULL) return XMPP_EMEM;
+                if (tmp == NULL) {
+                    hash_iter_release(iter);
+                    return XMPP_EMEM;
+                }
                 ret = xmpp_snprintf(ptr, left, " %s=\"%s\"", key, tmp);
                 xmpp_free(stanza->ctx, tmp);
-		if (ret < 0) return XMPP_EMEM;
+                if (ret < 0) {
+                    hash_iter_release(iter);
+                    return XMPP_EMEM;
+                }
                 _render_update(&written, buflen, ret, &left, &ptr);
             }
             hash_iter_release(iter);
@@ -429,9 +440,14 @@ int xmpp_stanza_to_text(xmpp_stanza_t *stanza,
     }
 
     ret = _render_stanza_recursive(stanza, buffer, length);
-    if (ret < 0) return ret;
+    if (ret < 0) {
+        xmpp_free(stanza->ctx, buffer);
+        *buf = NULL;
+        *buflen = 0;
+        return ret;
+    }
 
-    if (ret > length - 1) {
+    if ((size_t)ret > length - 1) {
         tmp = xmpp_realloc(stanza->ctx, buffer, ret + 1);
         if (!tmp) {
             xmpp_free(stanza->ctx, buffer);
@@ -443,7 +459,12 @@ int xmpp_stanza_to_text(xmpp_stanza_t *stanza,
         buffer = tmp;
 
         ret = _render_stanza_recursive(stanza, buffer, length);
-	if (ret > length - 1) return XMPP_EMEM;
+        if ((size_t)ret > length - 1) {
+            xmpp_free(stanza->ctx, buffer);
+            *buf = NULL;
+            *buflen = 0;
+            return XMPP_EMEM;
+        }
     }
     
     buffer[length - 1] = 0;
@@ -570,6 +591,7 @@ int xmpp_stanza_set_attribute(xmpp_stanza_t * const stanza,
                               const char * const value)
 {
     char *val;
+    int rc;
 
     if (stanza->type != XMPP_STANZA_TAG) return XMPP_EINVOP;
 
@@ -580,11 +602,14 @@ int xmpp_stanza_set_attribute(xmpp_stanza_t * const stanza,
 
     val = xmpp_strdup(stanza->ctx, value);
     if (!val) {
-        hash_release(stanza->attributes);
         return XMPP_EMEM;
     }
 
-    hash_add(stanza->attributes, key, val);
+    rc = hash_add(stanza->attributes, key, val);
+    if (rc < 0) {
+        xmpp_free(stanza->ctx, val);
+        return XMPP_EMEM;
+    }
 
     return XMPP_EOK;
 }
@@ -607,22 +632,29 @@ int xmpp_stanza_set_ns(xmpp_stanza_t * const stanza,
 }
 
 /** Add a child stanza to a stanza object.
- *  This function clones the child and appends it to the stanza object's
+ *  If do_clone is TRUE, user keeps reference to the child stanza and must call
- *  children.
+ *  xmpp_stanza_release() to release the reference. If do_clone is FALSE, user
+ *  transfers ownership and must not neither call xmpp_stanza_release() for
+ *  the child stanza nor use it.
  *
  *  @param stanza a Strophe stanza object
  *  @param child the child stanza object
+ *  @param do_clone TRUE to increase ref count of child (default for
+ *                  xmpp_stanza_add_child())
  *
  *  @return XMPP_EOK (0) on success or a number less than 0 on failure
  *
  *  @ingroup Stanza
  */
-int xmpp_stanza_add_child(xmpp_stanza_t *stanza, xmpp_stanza_t *child)
+int xmpp_stanza_add_child_ex(xmpp_stanza_t *stanza, xmpp_stanza_t *child,
+                             int do_clone)
 {
     xmpp_stanza_t *s;
 
+    if (do_clone) {
         /* get a reference to the child */
         xmpp_stanza_clone(child);
+    }
 
     child->parent = stanza;
 
@@ -638,6 +670,22 @@ int xmpp_stanza_add_child(xmpp_stanza_t *stanza, xmpp_stanza_t *child)
     return XMPP_EOK;
 }
 
+/** Add a child stanza to a stanza object.
+ *  This function clones the child and appends it to the stanza object's
+ *  children.
+ *
+ *  @param stanza a Strophe stanza object
+ *  @param child the child stanza object
+ *
+ *  @return XMPP_EOK (0) on success or a number less than 0 on failure
+ *
+ *  @ingroup Stanza
+ */
+int xmpp_stanza_add_child(xmpp_stanza_t *stanza, xmpp_stanza_t *child)
+{
+    return xmpp_stanza_add_child_ex(stanza, child, 1);
+}
+
 /** Set the text data for a text stanza.
  *  This function copies the text given and sets the stanza object's text to
  *  it.  Attempting to use this function on a stanza that has a name will
@@ -812,16 +860,50 @@ xmpp_stanza_t *xmpp_stanza_get_child_by_ns(xmpp_stanza_t * const stanza,
                                            const char * const ns)
 {
     xmpp_stanza_t *child;
+    const char *child_ns;
 
     for (child = stanza->children; child; child = child->next) {
-	if (xmpp_stanza_get_ns(child) &&
+        child_ns = xmpp_stanza_get_ns(child);
-	    strcmp(ns, xmpp_stanza_get_ns(child)) == 0)
+        if (child_ns && strcmp(ns, child_ns) == 0)
             break;
     }
     
     return child;
 }
 
+/** Get the first child of stanza with name and a given namespace.
+ *  This function searches all the immediate children of stanza for a child
+ *  stanza that matches the name and namespace provided.
+ *  The first matching child is returned.
+ *
+ *  @param stanza a Strophe stanza object
+ *  @param name a string with the name to match
+ *  @param ns a string with the namespace to match
+ *
+ *  @return the matching child stanza object or NULL if no match was found
+ *
+ *  @ingroup Stanza
+ */
+xmpp_stanza_t *xmpp_stanza_get_child_by_name_and_ns(xmpp_stanza_t * const stanza,
+                                             const char * const name,
+                                             const char * const ns)
+{
+    xmpp_stanza_t *child;
+    const char *child_ns;
+
+    for (child = stanza->children; child; child = child->next) {
+        if (child->type == XMPP_STANZA_TAG &&
+            (strcmp(name, xmpp_stanza_get_name(child)) == 0)) {
+            child_ns = xmpp_stanza_get_ns(child);
+            if (child_ns && strcmp(ns, child_ns) == 0) {
+                break;
+            }
+        }
+    }
+
+    return child;
+}
+
 /** Get the list of children.
  *  This function returns the first child of the stanza object.  The rest
  *  of the children can be obtained by calling xmpp_stanza_get_next() to
@@ -1047,7 +1129,12 @@ int xmpp_stanza_del_attribute(xmpp_stanza_t * const stanza,
  */
 xmpp_stanza_t *xmpp_stanza_reply(xmpp_stanza_t * const stanza)
 {
-    xmpp_stanza_t *copy;
+    xmpp_stanza_t *copy = NULL;
+    const char *from;
+    int rc;
+
+    from = xmpp_stanza_get_from(stanza);
+    if (!from) goto copy_error;
 
     copy = xmpp_stanza_new(stanza->ctx);
     if (!copy) goto copy_error;
@@ -1060,12 +1147,14 @@ xmpp_stanza_t *xmpp_stanza_reply(xmpp_stanza_t * const stanza)
     }
 
     if (stanza->attributes) {
-        if (_stanza_copy_attributes(copy, stanza) == -1)
+        if (_stanza_copy_attributes(copy, stanza) < 0)
             goto copy_error;
     }
 
-    xmpp_stanza_set_to(copy, xmpp_stanza_get_from(stanza));
+    xmpp_stanza_del_attribute(copy, "to");
     xmpp_stanza_del_attribute(copy, "from");
+    rc = xmpp_stanza_set_to(copy, from);
+    if (rc != XMPP_EOK) goto copy_error;
 
     return copy;
 
@@ -1214,3 +1303,122 @@ xmpp_stanza_t *xmpp_presence_new(xmpp_ctx_t *ctx)
 {
     return _stanza_new_with_attrs(ctx, "presence", NULL, NULL, NULL);
 }
+
+/** Create an <stream:error/> stanza object with given type and error text.
+ *  The error text is optional and may be NULL.
+ *
+ *  @param ctx a Strophe context object
+ *  @param type enum of xmpp_error_type_t
+ *  @param text content of a 'text'
+ *
+ *  @return a new Strophe stanza object
+ *
+ *  @todo Handle errors in this function
+ *
+ *  @ingroup Stanza
+ */
+xmpp_stanza_t *xmpp_error_new(xmpp_ctx_t *ctx, xmpp_error_type_t const type,
+                              const char * const text)
+{
+    xmpp_stanza_t *error = _stanza_new_with_attrs(ctx, "stream:error", NULL, NULL, NULL);
+    xmpp_stanza_t *error_type = xmpp_stanza_new(ctx);
+
+    switch(type) {
+        case XMPP_SE_BAD_FORMAT:
+            xmpp_stanza_set_name(error_type, "bad-format");
+            break;
+        case XMPP_SE_BAD_NS_PREFIX:
+            xmpp_stanza_set_name(error_type, "bad-namespace-prefix");
+            break;
+        case XMPP_SE_CONFLICT:
+            xmpp_stanza_set_name(error_type, "conflict");
+            break;
+        case XMPP_SE_CONN_TIMEOUT:
+            xmpp_stanza_set_name(error_type, "connection-timeout");
+            break;
+        case XMPP_SE_HOST_GONE:
+            xmpp_stanza_set_name(error_type, "host-gone");
+            break;
+        case XMPP_SE_HOST_UNKNOWN:
+            xmpp_stanza_set_name(error_type, "host-unknown");
+            break;
+        case XMPP_SE_IMPROPER_ADDR:
+            xmpp_stanza_set_name(error_type, "improper-addressing");
+            break;
+        case XMPP_SE_INTERNAL_SERVER_ERROR:
+            xmpp_stanza_set_name(error_type, "internal-server-error");
+            break;
+        case XMPP_SE_INVALID_FROM:
+            xmpp_stanza_set_name(error_type, "invalid-from");
+            break;
+        case XMPP_SE_INVALID_ID:
+            xmpp_stanza_set_name(error_type, "invalid-id");
+            break;
+        case XMPP_SE_INVALID_NS:
+            xmpp_stanza_set_name(error_type, "invalid-namespace");
+            break;
+        case XMPP_SE_INVALID_XML:
+            xmpp_stanza_set_name(error_type, "invalid-xml");
+            break;
+        case XMPP_SE_NOT_AUTHORIZED:
+            xmpp_stanza_set_name(error_type, "not-authorized");
+            break;
+        case XMPP_SE_POLICY_VIOLATION:
+            xmpp_stanza_set_name(error_type, "policy-violation");
+            break;
+        case XMPP_SE_REMOTE_CONN_FAILED:
+            xmpp_stanza_set_name(error_type, "remote-connection-failed");
+            break;
+        case XMPP_SE_RESOURCE_CONSTRAINT:
+            xmpp_stanza_set_name(error_type, "resource-constraint");
+            break;
+        case XMPP_SE_RESTRICTED_XML:
+            xmpp_stanza_set_name(error_type, "restricted-xml");
+            break;
+        case XMPP_SE_SEE_OTHER_HOST:
+            xmpp_stanza_set_name(error_type, "see-other-host");
+            break;
+        case XMPP_SE_SYSTEM_SHUTDOWN:
+            xmpp_stanza_set_name(error_type, "system-shutdown");
+            break;
+        case XMPP_SE_UNDEFINED_CONDITION:
+            xmpp_stanza_set_name(error_type, "undefined-condition");
+            break;
+        case XMPP_SE_UNSUPPORTED_ENCODING:
+            xmpp_stanza_set_name(error_type, "unsupported-encoding");
+            break;
+        case XMPP_SE_UNSUPPORTED_STANZA_TYPE:
+            xmpp_stanza_set_name(error_type, "unsupported-stanza-type");
+            break;
+        case XMPP_SE_UNSUPPORTED_VERSION:
+            xmpp_stanza_set_name(error_type, "unsupported-version");
+            break;
+        case XMPP_SE_XML_NOT_WELL_FORMED:
+            xmpp_stanza_set_name(error_type, "xml-not-well-formed");
+            break;
+        default:
+            xmpp_stanza_set_name(error_type, "internal-server-error");
+            break;
+    }
+
+    xmpp_stanza_set_ns(error_type, XMPP_NS_STREAMS_IETF);
+    xmpp_stanza_add_child(error, error_type);
+    xmpp_stanza_release(error_type);
+
+    if (text) {
+        xmpp_stanza_t *error_text = xmpp_stanza_new(ctx);
+        xmpp_stanza_t *content = xmpp_stanza_new(ctx);
+
+        xmpp_stanza_set_name(error_text, "text");
+        xmpp_stanza_set_ns(error_text, XMPP_NS_STREAMS_IETF);
+
+        xmpp_stanza_set_text(content, text);
+        xmpp_stanza_add_child(error_text, content);
+        xmpp_stanza_release(content);
+
+        xmpp_stanza_add_child(error, error_text);
+        xmpp_stanza_release(error_text);
+    }
+
+    return error;
+}

src/thread.c

@@ -1,116 +0,0 @@
-/* thread.c
-** strophe XMPP client library -- thread abstraction
-**
-** Copyright (C) 2005-2009 Collecta, Inc. 
-**
-**  This software is provided AS-IS with no warranty, either express
-**  or implied.
-**
-**  This program is dual licensed under the MIT and GPLv3 licenses.
-*/
-
-/** @file
- *  Thread absraction.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#else
-#include <pthread.h>
-#endif
-
-#include "strophe.h"
-#include "common.h"
-#include "thread.h"
-
-struct _mutex_t {
-    const xmpp_ctx_t *ctx;
-
-#ifdef _WIN32
-    HANDLE mutex;
-#else
-    pthread_mutex_t *mutex;
-#endif
-};
-
-/* mutex functions */
-
-mutex_t *mutex_create(const xmpp_ctx_t * ctx)
-{
-    mutex_t *mutex;
-
-    mutex = xmpp_alloc(ctx, sizeof(mutex_t));
-    if (mutex) {
-	mutex->ctx = ctx;
-#ifdef _WIN32
-	mutex->mutex = CreateMutex(NULL, FALSE, NULL);
-#else
-	mutex->mutex = xmpp_alloc(ctx, sizeof(pthread_mutex_t));
-	if (mutex->mutex)
-	    if (pthread_mutex_init(mutex->mutex, NULL) != 0) {
-		xmpp_free(ctx, mutex->mutex);
-		mutex->mutex = NULL;
-	    }
-#endif
-	if (!mutex->mutex) {
-	    xmpp_free(ctx, mutex);
-	    mutex = NULL;
-	}
-    }
-
-    return mutex;
-}
-
-int mutex_destroy(mutex_t *mutex)
-{
-    int ret = 1;
-    const xmpp_ctx_t *ctx;
-
-#ifdef _WIN32
-    if (mutex->mutex)
-	ret = CloseHandle(mutex->mutex);
-#else
-    if (mutex->mutex)
-	ret = pthread_mutex_destroy(mutex->mutex) == 0;
-#endif
-    ctx = mutex->ctx;
-    xmpp_free(ctx, mutex);
-
-    return ret;
-}
-
-int mutex_lock(mutex_t *mutex)
-{
-    int ret;
-
-#ifdef _WIN32
-    ret = WaitForSingleObject(mutex->mutex, INFINITE) == 0;
-#else
-    ret = pthread_mutex_lock(mutex->mutex) == 0;
-#endif
-
-    return ret;
-}
-
-int mutex_trylock(mutex_t *mutex)
-{
-    /* TODO */
-    return 0;
-}
-
-int mutex_unlock(mutex_t *mutex)
-{
-    int ret;
-
-#ifdef _WIN32
-    ret = ReleaseMutex(mutex->mutex);
-#else
-    ret = pthread_mutex_unlock(mutex->mutex) == 0;
-#endif
-
-    return ret;
-}

src/thread.h

@@ -1,40 +0,0 @@
-/* thread.h
-** strophe XMPP client library -- thread abstraction header
-**
-** Copyright (C) 2005-2009 Collecta, Inc. 
-**
-**  This software is provided AS-IS with no warranty, either express
-**  or implied.
-**
-**  This program is dual licensed under the MIT and GPLv3 licenses.
-*/
-
-/** @file
- *  Threading abstraction API.
- */
-
-#ifndef __LIBSTROPHE_THREAD_H__
-#define __LIBSTROPHE_THREAD_H__
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#ifdef _WIN32
-#include <windows.h>
-#else
-#include <pthread.h>
-#endif
-
-#include "strophe.h"
-
-typedef struct _mutex_t mutex_t;
-
-/* mutex functions */
-
-mutex_t *mutex_create(const xmpp_ctx_t *ctx);
-int mutex_destroy(mutex_t *mutex);
-int mutex_lock(mutex_t *mutex);
-int mutex_trylock(mutex_t *mutex);
-int mutex_unlock(mutex_t *mutex);
-
-#endif /* __LIBSTROPHE_THREAD_H__ */

src/tls.h

@@ -24,7 +24,7 @@ typedef struct _tls tls_t;
 void tls_initialize(void);
 void tls_shutdown(void);
 
-tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock);
+tls_t *tls_new(xmpp_conn_t *conn);
 void tls_free(tls_t *tls);
 
 int tls_set_credentials(tls_t *tls, const char *cafilename);

src/tls_dummy.c

@@ -33,7 +33,7 @@ void tls_shutdown(void)
     return;
 }
 
-tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
+tls_t *tls_new(xmpp_conn_t *conn)
 {
     /* always fail */
     return NULL;

src/tls_gnutls.c

@@ -46,13 +46,13 @@ void tls_shutdown(void)
     gnutls_global_deinit();
 }
 
-tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
+tls_t *tls_new(xmpp_conn_t *conn)
 {
-    tls_t *tls = xmpp_alloc(ctx, sizeof(tls_t));
+    tls_t *tls = xmpp_alloc(conn->ctx, sizeof(tls_t));
 
     if (tls) {
-        tls->ctx = ctx;
+        tls->ctx = conn->ctx;
-        tls->sock = sock;
+        tls->sock = conn->sock;
         gnutls_init(&tls->session, GNUTLS_CLIENT);
 
         gnutls_certificate_allocate_credentials(&tls->cred);
@@ -61,7 +61,7 @@ tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
         gnutls_set_default_priority(tls->session);
 
         /* fixme: this may require setting a callback on win32? */
-        gnutls_transport_set_int(tls->session, sock);
+        gnutls_transport_set_int(tls->session, conn->sock);
     }
 
     return tls;

src/tls_openssl.c

@@ -24,11 +24,29 @@
 
 #include <openssl/ssl.h>
 #include <openssl/err.h>
+#include <openssl/opensslv.h>
+#include <openssl/x509v3.h>
 
 #include "common.h"
 #include "tls.h"
 #include "sock.h"
 
+/*
+ * Redefine OPENSSL_VERSION_NUMBER for LibreSSL.
+ * LibreSSL and OpenSSL use different and incompatible version schemes. Solve
+ * this issue in the way how nginx project did.
+ */
+#if (defined LIBRESSL_VERSION_NUMBER && OPENSSL_VERSION_NUMBER == 0x20000000L)
+#undef OPENSSL_VERSION_NUMBER
+#if (LIBRESSL_VERSION_NUMBER >= 0x2080000fL)
+#define OPENSSL_VERSION_NUMBER  0x1010000fL
+#elif (LIBRESSL_VERSION_NUMBER >= 0x2070000fL)
+#define OPENSSL_VERSION_NUMBER  0x1000200fL
+#else
+#define OPENSSL_VERSION_NUMBER  0x1000107fL
+#endif
+#endif
+
 struct _tls {
     xmpp_ctx_t *ctx;
     sock_t sock;
@@ -46,16 +64,38 @@ enum {
 static void _tls_sock_wait(tls_t *tls, int error);
 static void _tls_set_error(tls_t *tls, int error);
 static void _tls_log_error(xmpp_ctx_t *ctx);
+static void _tls_dump_cert_info(tls_t *tls);
 
 void tls_initialize(void)
 {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
     SSL_library_init();
     SSL_load_error_strings();
+#else
+    OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
+#endif
 }
 
 void tls_shutdown(void)
 {
-    return;
+    /*
+     * FIXME: Don't free global tables, program or other libraries may use
+     * openssl after libstrophe finalization. Maybe better leak some fixed
+     * memory rather than cause random crashes of the main program.
+     */
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+    ERR_free_strings();
+    EVP_cleanup();
+    CRYPTO_cleanup_all_ex_data();
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+    SSL_COMP_free_compression_methods();
+#endif
+#if OPENSSL_VERSION_NUMBER < 0x10000000L
+    ERR_remove_state(0);
+#else
+    ERR_remove_thread_state(NULL);
+#endif
+#endif
 }
 
 int tls_error(tls_t *tls)
@@ -63,29 +103,79 @@ int tls_error(tls_t *tls)
     return tls->lasterror;
 }
 
-tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
+tls_t *tls_new(xmpp_conn_t *conn)
 {
-    tls_t *tls = xmpp_alloc(ctx, sizeof(*tls));
+    tls_t *tls = xmpp_alloc(conn->ctx, sizeof(*tls));
+    int mode;
 
     if (tls) {
         int ret;
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+        /* Hostname verification is supported in OpenSSL 1.0.2 and newer. */
+        X509_VERIFY_PARAM *param;
+#endif
         memset(tls, 0, sizeof(*tls));
 
-        tls->ctx = ctx;
+        tls->ctx = conn->ctx;
-        tls->sock = sock;
+        tls->sock = conn->sock;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
         tls->ssl_ctx = SSL_CTX_new(SSLv23_client_method());
+#else
+        tls->ssl_ctx = SSL_CTX_new(TLS_client_method());
+#endif
         if (tls->ssl_ctx == NULL)
             goto err;
 
+        /* Enable bug workarounds. */
+        SSL_CTX_set_options(tls->ssl_ctx, SSL_OP_ALL);
+
+        /* Disable insecure SSL/TLS versions. */
+        SSL_CTX_set_options(tls->ssl_ctx, SSL_OP_NO_SSLv2); /* DROWN */
+        SSL_CTX_set_options(tls->ssl_ctx, SSL_OP_NO_SSLv3); /* POODLE */
+        SSL_CTX_set_options(tls->ssl_ctx, SSL_OP_NO_TLSv1); /* BEAST */
+
         SSL_CTX_set_client_cert_cb(tls->ssl_ctx, NULL);
         SSL_CTX_set_mode(tls->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
-        SSL_CTX_set_verify(tls->ssl_ctx, SSL_VERIFY_NONE, NULL);
+
+        ret = SSL_CTX_set_default_verify_paths(tls->ssl_ctx);
+        if (ret == 0 && !conn->tls_trust) {
+            /*
+             * Returns 1 on success and 0 on failure. A missing default
+             * location is still treated as a success.
+             * Ignore errors when XMPP_CONN_FLAG_TRUST_TLS is set.
+             */
+            xmpp_error(tls->ctx, "tls",
+                       "SSL_CTX_set_default_verify_paths() failed");
+            goto err_free_ctx;
+        }
 
         tls->ssl = SSL_new(tls->ssl_ctx);
         if (tls->ssl == NULL)
             goto err_free_ctx;
 
-        ret = SSL_set_fd(tls->ssl, sock);
+#if OPENSSL_VERSION_NUMBER >= 0x0908060L && !defined(OPENSSL_NO_TLSEXT)
+        /* Enable SNI. */
+        SSL_set_tlsext_host_name(tls->ssl, conn->domain);
+#endif
+
+        /* Trust server's certificate when user sets the flag explicitly. */
+        mode = conn->tls_trust ? SSL_VERIFY_NONE : SSL_VERIFY_PEER;
+        SSL_set_verify(tls->ssl, mode, 0);
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+        /* Hostname verification is supported in OpenSSL 1.0.2 and newer. */
+        param = SSL_get0_param(tls->ssl);
+
+        /*
+         * Allow only complete wildcards.  RFC 6125 discourages wildcard usage
+         * completely, and lists internationalized domain names as a reason
+         * against partial wildcards.
+         * See https://tools.ietf.org/html/rfc6125#section-7.2 for more information.
+         */
+        X509_VERIFY_PARAM_set_hostflags(param, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
+        X509_VERIFY_PARAM_set1_host(param, conn->domain, 0);
+#endif
+
+        ret = SSL_set_fd(tls->ssl, conn->sock);
         if (ret <= 0)
             goto err_free_ssl;
     }
@@ -97,8 +187,8 @@ err_free_ssl:
 err_free_ctx:
     SSL_CTX_free(tls->ssl_ctx);
 err:
-    xmpp_free(ctx, tls);
+    xmpp_free(conn->ctx, tls);
-    _tls_log_error(ctx);
+    _tls_log_error(conn->ctx);
     return NULL;
 }
 
@@ -118,6 +208,7 @@ int tls_start(tls_t *tls)
 {
     int error;
     int ret;
+    long x509_res;
 
     /* Since we're non-blocking, loop the connect call until it
        succeeds or fails */
@@ -134,8 +225,13 @@ int tls_start(tls_t *tls)
         /* success or fatal error */
         break;
     }
-    _tls_set_error(tls, error);
 
+    x509_res = SSL_get_verify_result(tls->ssl);
+    xmpp_debug(tls->ctx, "tls", "Certificate verification %s",
+               x509_res == X509_V_OK ? "passed" : "FAILED");
+    _tls_dump_cert_info(tls);
+
+    _tls_set_error(tls, error);
     return ret <= 0 ? 0 : 1;
 }
 
@@ -145,6 +241,11 @@ int tls_stop(tls_t *tls)
     int error;
     int ret;
 
+    /* According to OpenSSL.org, we must not call SSL_shutdown(3)
+       if a previous fatal error has occurred on a connection. */
+    if (tls->lasterror == SSL_ERROR_SYSCALL || tls->lasterror == SSL_ERROR_SSL)
+        return 1;
+
     while (1) {
         ++retries;
         ret = SSL_shutdown(tls->ssl);
@@ -155,6 +256,14 @@ int tls_stop(tls_t *tls)
         }
         _tls_sock_wait(tls, error);
     }
+    if (error == SSL_ERROR_SYSCALL && errno == 0) {
+        /*
+         * Handle special case when peer closes connection instead of
+         * proper shutdown.
+         */
+        error = 0;
+        ret = 1;
+    }
     _tls_set_error(tls, error);
 
     return ret <= 0 ? 0 : 1;
@@ -206,6 +315,8 @@ static void _tls_sock_wait(tls_t *tls, int error)
     int nfds;
     int ret;
 
+    if (error == SSL_ERROR_NONE) return;
+
     FD_ZERO(&rfds);
     FD_ZERO(&wfds);
     if (error == SSL_ERROR_WANT_READ)
@@ -224,6 +335,7 @@ static void _tls_sock_wait(tls_t *tls, int error)
 static void _tls_set_error(tls_t *tls, int error)
 {
     if (error != 0 && !tls_is_recoverable(error)) {
+        xmpp_debug(tls->ctx, "tls", "error=%d errno=%d", error, errno);
         _tls_log_error(tls->ctx);
     }
     tls->lasterror = error;
@@ -242,3 +354,26 @@ static void _tls_log_error(xmpp_ctx_t *ctx)
         }
     } while (e != 0);
 }
+
+static void _tls_dump_cert_info(tls_t *tls)
+{
+    X509 *cert;
+    char *name;
+
+    cert = SSL_get_peer_certificate(tls->ssl);
+    if (cert == NULL)
+        xmpp_debug(tls->ctx, "tls", "Certificate was not presented by peer");
+    else {
+        name = X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0);
+        if (name != NULL) {
+            xmpp_debug(tls->ctx, "tls", "Subject=%s", name);
+            OPENSSL_free(name);
+        }
+        name = X509_NAME_oneline(X509_get_issuer_name(cert), NULL, 0);
+        if (name != NULL) {
+            xmpp_debug(tls->ctx, "tls", "Issuer=%s", name);
+            OPENSSL_free(name);
+        }
+        X509_free(cert);
+    }
+}

src/tls_schannel.c

@@ -23,6 +23,7 @@
 
 struct _tls {
     xmpp_ctx_t *ctx;
+    xmpp_conn_t *conn;
     sock_t sock;
 
     HANDLE hsec32;
@@ -60,8 +61,10 @@ void tls_shutdown(void)
     return;
 }
 
-tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
+tls_t *tls_new(xmpp_conn_t *conn)
 {
+    xmpp_ctx_t *ctx = conn->ctx;
+    sock_t sock = conn->sock;
     tls_t *tls;
     PSecurityFunctionTable (*pInitSecurityInterface)(void);
     SCHANNEL_CRED scred;
@@ -92,6 +95,7 @@ tls_t *tls_new(xmpp_ctx_t *ctx, sock_t sock)
 
     memset(tls, 0, sizeof(*tls));
     tls->ctx = ctx;
+    tls->conn = conn;
     tls->sock = sock;
 
     if (!(tls->hsec32 = LoadLibrary ("secur32.dll"))) {
@@ -216,24 +220,10 @@ int tls_start(tls_t *tls)
     SecBuffer sbin[2], sbout[1];
     SECURITY_STATUS ret;
     int sent;
-    char *name = NULL;
+    char *name;
 
-    /* search the ctx's conns for our sock, and use the domain there as our
+    /* use the domain there as our name */
-     * name */
+    name = tls->conn->domain;
-    {
-	xmpp_connlist_t *listentry = tls->ctx->connlist;
-
-	while (listentry) {
-	    xmpp_conn_t *conn = listentry->conn;
-
-	    if (conn->sock == tls->sock) {
-		name = strdup(conn->domain);
-		listentry = NULL;
-	    } else {
-		listentry = listentry->next;
-	    }
-	}
-    }
 
     ctxtreq = ISC_REQ_SEQUENCE_DETECT | ISC_REQ_REPLAY_DETECT
 	    | ISC_REQ_CONFIDENTIALITY | ISC_RET_EXTENDED_ERROR
@@ -265,10 +255,18 @@ int tls_start(tls_t *tls)
 					  NULL, 0, &(tls->hctxt), &sbdout,
 					  &ctxtattr, NULL);
 
-    while (ret == SEC_I_CONTINUE_NEEDED
-	   || ret == SEC_I_INCOMPLETE_CREDENTIALS) {
     unsigned char *p = sbin[0].pvBuffer;
-	int len = 0, inbytes = 0;
+    int len = 0;
+
+    while (ret == SEC_I_CONTINUE_NEEDED
+	   || ret == SEC_I_INCOMPLETE_CREDENTIALS
+     || ret == SEC_E_INCOMPLETE_MESSAGE) {
+	int inbytes = 0;
+
+  if (ret != SEC_E_INCOMPLETE_MESSAGE) {
+    len = 0;
+    p = sbin[0].pvBuffer;
+  }
 
 	if (sbdout.pBuffers[0].cbBuffer) {
 	    unsigned char *writebuff = sbdout.pBuffers[0].pvBuffer;

src/util.c

@@ -86,7 +86,12 @@ char *xmpp_strtok_r(char *s, const char *delim, char **saveptr)
  */
 uint64_t time_stamp(void)
 {
-#ifdef _WIN32
+#if defined(_XBOX_ONE)
+    uint64_t SystemTime;
+    GetSystemTimeAsFileTime((FILETIME*)&SystemTime);
+    /* Convert 100 nanosec ticks to milliseconds */
+    return (SystemTime / 10000);
+#elif defined(_WIN32)
     return timeGetTime();
 #else
     struct timeval tv;

strophe.h

@@ -71,6 +71,14 @@ extern "C" {
  *  Namespace definition for 'jabber:iq:roster'.
  */
 #define XMPP_NS_ROSTER "jabber:iq:roster"
+/** @def XMPP_NS_REGISTER
+ *  Namespace definition for 'jabber:iq:register'.
+ */
+#define XMPP_NS_REGISTER "jabber:iq:register"
+/** @def XMPP_NS_SM
+ *  Namespace definition for Stream Management.
+ */
+#define XMPP_NS_SM "urn:xmpp:sm:3"
 
 /* error defines */
 /** @def XMPP_EOK
@@ -165,6 +173,14 @@ typedef struct _xmpp_stanza_t xmpp_stanza_t;
 #define XMPP_CONN_FLAG_DISABLE_TLS   (1UL << 0)
 #define XMPP_CONN_FLAG_MANDATORY_TLS (1UL << 1)
 #define XMPP_CONN_FLAG_LEGACY_SSL    (1UL << 2)
+/** @def XMPP_CONN_FLAG_TRUST_TLS
+ *  Trust server's certificate even if it is invalid.
+ */
+#define XMPP_CONN_FLAG_TRUST_TLS     (1UL << 3)
+/** @def XMPP_CONN_FLAG_LEGACY_AUTH
+ *  Enable legacy authentication support.
+ */
+#define XMPP_CONN_FLAG_LEGACY_AUTH   (1UL << 4)
 
 /* connect callback */
 typedef enum {
@@ -213,6 +229,7 @@ typedef void (*xmpp_conn_handler)(xmpp_conn_t * const conn,
 				  xmpp_stream_error_t * const stream_error,
 				  void * const userdata);
 
+void xmpp_send_error(xmpp_conn_t * const conn, xmpp_error_type_t const type, char * const text);
 xmpp_conn_t *xmpp_conn_new(xmpp_ctx_t * const ctx);
 xmpp_conn_t *xmpp_conn_clone(xmpp_conn_t * const conn);
 int xmpp_conn_release(xmpp_conn_t * const conn);
@@ -228,6 +245,9 @@ xmpp_ctx_t *xmpp_conn_get_context(xmpp_conn_t * const conn);
 void xmpp_conn_disable_tls(xmpp_conn_t * const conn);
 int xmpp_conn_is_secured(xmpp_conn_t * const conn);
 void xmpp_conn_set_keepalive(xmpp_conn_t * const conn, int timeout, int interval);
+int xmpp_conn_is_connecting(xmpp_conn_t * const conn);
+int xmpp_conn_is_connected(xmpp_conn_t * const conn);
+int xmpp_conn_is_disconnected(xmpp_conn_t * const conn);
 
 int xmpp_connect_client(xmpp_conn_t * const conn, 
 			  const char * const altdomain,
@@ -314,6 +334,8 @@ xmpp_stanza_t *xmpp_stanza_copy(const xmpp_stanza_t * const stanza);
 /* free a stanza object and it's contents */
 int xmpp_stanza_release(xmpp_stanza_t * const stanza);
 
+xmpp_ctx_t *xmpp_stanza_get_context(const xmpp_stanza_t * const stanza);
+
 int xmpp_stanza_is_text(xmpp_stanza_t * const stanza);
 int xmpp_stanza_is_tag(xmpp_stanza_t * const stanza);
 
@@ -326,8 +348,13 @@ xmpp_stanza_t *xmpp_stanza_get_child_by_name(xmpp_stanza_t * const stanza,
 					     const char * const name);
 xmpp_stanza_t *xmpp_stanza_get_child_by_ns(xmpp_stanza_t * const stanza,
 					   const char * const ns);
+xmpp_stanza_t *xmpp_stanza_get_child_by_name_and_ns(xmpp_stanza_t * const stanza,
+                                                    const char * const name,
+                                                    const char * const ns);
 xmpp_stanza_t *xmpp_stanza_get_next(xmpp_stanza_t * const stanza);
 int xmpp_stanza_add_child(xmpp_stanza_t *stanza, xmpp_stanza_t *child);
+int xmpp_stanza_add_child_ex(xmpp_stanza_t *stanza, xmpp_stanza_t *child,
+                             int do_clone);
 
 const char *xmpp_stanza_get_attribute(xmpp_stanza_t * const stanza,
 				      const char * const name);
@@ -377,6 +404,8 @@ int xmpp_message_set_body(xmpp_stanza_t *msg, const char * const text);
 xmpp_stanza_t *xmpp_iq_new(xmpp_ctx_t *ctx, const char * const type,
                            const char * const id);
 xmpp_stanza_t *xmpp_presence_new(xmpp_ctx_t *ctx);
+xmpp_stanza_t *xmpp_error_new(xmpp_ctx_t *ctx, xmpp_error_type_t const type,
+                              const char * const text);
 
 /* jid */
 
@@ -394,6 +423,7 @@ char *xmpp_jid_resource(xmpp_ctx_t *ctx, const char *jid);
 void xmpp_run_once(xmpp_ctx_t *ctx, const unsigned long  timeout);
 void xmpp_run(xmpp_ctx_t *ctx);
 void xmpp_stop(xmpp_ctx_t *ctx);
+void xmpp_ctx_set_timeout(xmpp_ctx_t * const ctx, const unsigned long timeout);
 
 /* UUID */
 
@@ -409,6 +439,8 @@ char *xmpp_uuid_gen(xmpp_ctx_t *ctx);
 typedef struct _xmpp_sha1_t xmpp_sha1_t;
 
 char *xmpp_sha1(xmpp_ctx_t *ctx, const unsigned char *data, size_t len);
+void xmpp_sha1_digest(const unsigned char *data, size_t len,
+                      unsigned char *digest);
 
 xmpp_sha1_t *xmpp_sha1_new(xmpp_ctx_t *ctx);
 void xmpp_sha1_free(xmpp_sha1_t *sha1);

tests/res_query_dump.c

@@ -61,7 +61,7 @@ int main(int argc, char **argv)
     len = res_query(fulldomain, C_IN, T_SRV, buf, sizeof(buf));
 
     if (len < 0) {
-        fprintf(stderr, "res_query(): Error occured (errno=%d)\n", errno);
+        fprintf(stderr, "res_query(): Error occurred (errno=%d)\n", errno);
     }
     if (len == 0) {
         fprintf(stderr, "res_query(): Empty result\n");

tests/test_base64.c

@@ -134,8 +134,7 @@ int main(int argc, char *argv[])
     unsigned char *udec;
     char *dec;
     char *enc;
-    size_t len;
+    size_t len, i;
-    int i;
 
     printf("BASE64 tests.\n");
 

tests/test_hash.c

@@ -16,18 +16,19 @@
 #include "strophe.h"
 #include "common.h"
 #include "hash.h"
+#include "test.h"
 
 #define TABLESIZE 100
 #define TESTSIZE 500
 
 /* static test data */
-const int nkeys = 5;
 const char *keys[] = {
   "foo", "bar", "baz", "quux", "xyzzy"
 };
 const char *values[] = {
   "wuzzle", "mug", "canonical", "rosebud", "lottery"
 };
+const int nkeys = ARRAY_SIZE(keys);
 
 int main(int argc, char **argv)
 {
@@ -58,7 +59,7 @@ int main(int argc, char **argv)
     }
 
     /* allocate a hash table */
-    table = hash_new(ctx, TABLESIZE, NULL);
+    table = hash_new(ctx, TABLESIZE, xmpp_free);
     if (table == NULL) {
 	/* table allocation failed! */
 	return 1;
@@ -66,7 +67,7 @@ int main(int argc, char **argv)
 
     /* test insertion */
     for (i = 0; i < nkeys; i++) {
-	err = hash_add(table, keys[i], (void*)values[i]);
+	err = hash_add(table, keys[i], xmpp_strdup(ctx, values[i]));
 	if (err) return err;
     }
 
@@ -76,6 +77,18 @@ int main(int argc, char **argv)
 	return 1;
     }
 
+    /* test replacing old values */
+    for (i = 0; i < nkeys; i++) {
+        err = hash_add(table, keys[0], xmpp_strdup(ctx, values[i]));
+        if (err) return err;
+        if (hash_num_keys(table) != nkeys) return 1;
+        result = hash_get(table, keys[0]);
+        if (result == NULL) return 1;
+        if (strcmp(result, values[i]) != 0) return 1;
+    }
+    /* restore value for the 1st key */
+    hash_add(table, keys[0], xmpp_strdup(ctx, values[0]));
+
     /* test cloning */
     clone = hash_clone(table);
 

tests/test_jid.c

@@ -27,54 +27,67 @@ static const char *_s(const char *s)
 
 int test_jid(xmpp_ctx_t *ctx)
 {
+    char *bare;
     char *node;
     char *domain;
     char *resource;
 
+    bare = xmpp_jid_bare(ctx, jid1);
     node = xmpp_jid_node(ctx, jid1);
     domain = xmpp_jid_domain(ctx, jid1);
     resource = xmpp_jid_resource(ctx, jid1);
     printf("jid '%s' parsed to %s, %s, %s\n",
            jid1, _s(node), _s(domain), _s(resource));
+    if (bare == NULL || strcmp(bare, "foo@bar.com")) return 1;
     if (node == NULL || strcmp(node, "foo")) return 1;
     if (domain == NULL || strcmp(domain, "bar.com")) return 1;
     if (resource != NULL) return 1;
+    if (bare) xmpp_free(ctx, bare);
     if (node) xmpp_free(ctx, node);
     if (domain) xmpp_free(ctx, domain);
     if (resource) xmpp_free(ctx, resource);
 
+    bare = xmpp_jid_bare(ctx, jid2);
     node = xmpp_jid_node(ctx, jid2);
     domain = xmpp_jid_domain(ctx, jid2);
     resource = xmpp_jid_resource(ctx, jid2);
     printf("jid '%s' parsed to %s, %s, %s\n",
            jid2, _s(node), _s(domain), _s(resource));
+    if (bare == NULL || strcmp(bare, "anyone@example.com")) return 1;
     if (node == NULL || strcmp(node, "anyone")) return 1;
     if (domain == NULL || strcmp(domain, "example.com")) return 1;
     if (resource == NULL || strcmp(resource, "hullo")) return 1;
+    if (bare) xmpp_free(ctx, bare);
     if (node) xmpp_free(ctx, node);
     if (domain) xmpp_free(ctx, domain);
     if (resource) xmpp_free(ctx, resource);
 
+    bare = xmpp_jid_bare(ctx, jid3);
     node = xmpp_jid_node(ctx, jid3);
     domain = xmpp_jid_domain(ctx, jid3);
     resource = xmpp_jid_resource(ctx, jid3);
     printf("jid '%s' parsed to %s, %s, %s\n",
            jid3, _s(node), _s(domain), _s(resource));
+    if (bare == NULL || strcmp(bare, "manic.porter@xyz.net")) return 1;
     if (node == NULL || strcmp(node, "manic.porter")) return 1;
     if (domain == NULL || strcmp(domain, "xyz.net")) return 1;
     if (resource == NULL || strcmp(resource, "frob")) return 1;
+    if (bare) xmpp_free(ctx, bare);
     if (node) xmpp_free(ctx, node);
     if (domain) xmpp_free(ctx, domain);
     if (resource) xmpp_free(ctx, resource);
 
+    bare = xmpp_jid_bare(ctx, jid4);
     node = xmpp_jid_node(ctx, jid4);
     domain = xmpp_jid_domain(ctx, jid4);
     resource = xmpp_jid_resource(ctx, jid4);
     printf("jid '%s' parsed to %s, %s, %s\n",
            jid4, _s(node), _s(domain), _s(resource));
+    if (bare == NULL || strcmp(bare, "domain.tld")) return 1;
     if (node != NULL) return 1;
     if (domain == NULL || strcmp(domain, "domain.tld")) return 1;
     if (resource != NULL) return 1;
+    if (bare) xmpp_free(ctx, bare);
     if (node) xmpp_free(ctx, node);
     if (domain) xmpp_free(ctx, domain);
     if (resource) xmpp_free(ctx, resource);

tests/test_sha1.c

@@ -41,7 +41,7 @@ static void digest_to_hex(const uint8_t *digest, char *output)
 
 int main(int argc, char** argv)
 {
-    int k;
+    size_t k;
     SHA1_CTX context;
     uint8_t digest[20];
     char output[80];

tests/test_stanza.c

@@ -0,0 +1,96 @@
+/* test_stanza.c
+ * libstrophe XMPP client library -- test routines for stanza functions
+ *
+ * Copyright (C) 2020 Dmitry Podgorny <pasis.ua@gmail.com>
+ *
+ *  This software is provided AS-IS with no warranty, either express
+ *  or implied.
+ *
+ *  This program is dual licensed under the MIT and GPLv3 licenses.
+ */
+
+/* gcc -o test_stanza -I./src tests/test_stanza.c -lstrophe */
+
+#include <strophe.h>
+
+#include <assert.h>
+#include <stdlib.h>
+
+#define MAGICPTR ((void *)0xfeedbeef)
+static unsigned long used_blocks = 0;
+
+static void *stanza_alloc(size_t size, void *userdata)
+{
+    assert(userdata == MAGICPTR);
+
+    ++used_blocks;
+    return malloc(size);
+}
+
+static void stanza_free(void *ptr, void *userdata)
+{
+    assert(userdata == MAGICPTR);
+
+    --used_blocks;
+    free(ptr);
+}
+
+static void *stanza_realloc(void *ptr, size_t size, void *userdata)
+{
+    assert(userdata == MAGICPTR);
+
+    return realloc(ptr, size);
+}
+
+static const xmpp_mem_t stanza_mem = {
+    .alloc = &stanza_alloc,
+    .free = &stanza_free,
+    .realloc = &stanza_realloc,
+    .userdata = MAGICPTR,
+};
+
+static void test_stanza_add_child(xmpp_ctx_t *ctx)
+{
+    xmpp_stanza_t *stanza;
+    xmpp_stanza_t *child;
+    unsigned long baseline = used_blocks;
+
+    /* xmpp_stanza_add_child */
+
+    stanza = xmpp_stanza_new(ctx);
+    child = xmpp_stanza_new(ctx);
+    assert(stanza != NULL);
+    assert(child != NULL);
+    xmpp_stanza_add_child(stanza, child);
+    xmpp_stanza_release(stanza);
+    assert(used_blocks > baseline);
+    xmpp_stanza_release(child);
+    assert(used_blocks == baseline);
+
+    /* xmpp_stanza_add_child_ex */
+
+    stanza = xmpp_stanza_new(ctx);
+    child = xmpp_stanza_new(ctx);
+    assert(stanza != NULL);
+    assert(child != NULL);
+    xmpp_stanza_add_child_ex(stanza, child, 0);
+    xmpp_stanza_release(stanza);
+    assert(used_blocks == baseline);
+}
+
+int main()
+{
+    xmpp_ctx_t *ctx;
+
+    xmpp_initialize();
+    ctx = xmpp_ctx_new(&stanza_mem, NULL);
+    assert(ctx != NULL);
+
+    test_stanza_add_child(ctx);
+
+    xmpp_ctx_free(ctx);
+    xmpp_shutdown();
+
+    /* All allocated blocks must be freed. */
+    assert(used_blocks == 0);
+}

tests/test_string.c

@@ -20,6 +20,16 @@
 
 #include "test.h" /* ARRAY_SIZE */
 
+/* strtok_s() has appeared in visual studio 2005.
+   Use own implementation for older versions. */
+#ifdef _MSC_VER
+# if (_MSC_VER >= 1400)
+# define strtok_r strtok_s
+# else
+# define strtok_r xmpp_strtok_r
+# endif
+#endif /* _MSC_VER */
+
 static int test_strtok_r(void)
 {
     const char *test = "-abc-=-def--";
@@ -79,7 +89,7 @@ static int test_strdup_one(xmpp_ctx_t *ctx, const char *s)
 static int test_strdup(void)
 {
     xmpp_ctx_t *ctx;
-    int i;
+    size_t i;
     int rc = 0;
 
     static const char *tests[] = { "", "\0", "test", "s p a c e", "\n\r" };