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libstrophe-gh/tests/test_resolver.c
Steffen Jaeckel f49ccb3262 Fix wording of licensing terms 
It has been pointed out that the wording of the license of this library is
not entirely clear.

The term "dual licensing" usually refers to a licence choice of two
licenses "LICENSE1 _or_ LICENSE2.
Instead the license of this library claimed "LICENSE1 _and_ LICENSE2".

After an internal discussion with @metajack and @pasis it was made clear
that the initial idea was to dual license the library in the usual way.

This was also made clear by jack on the ML in the past [0].
As of jack, these licensing terms originated from jquery, which also used
the 'and' version in the past and has since been corrected [1].

This patch changes the license terms to 'MIT or GPLv3' and also adds SPDX
headers [2].

[0] https://groups.google.com/g/libstrophe/c/JkFgr601JQc
[1] https://stackoverflow.com/q/2758409
[2] https://spdx.org

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>
2023-08-25 18:08:42 +02:00

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/* SPDX-License-Identifier: MIT OR GPL-3.0-only */
/* test_resolver.c
* strophe XMPP client library -- tests for resolver
*
* Copyright (C) 2015 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 or GPLv3 licenses.
*/
#include <assert.h>
#include <stdio.h>
#include "strophe.h"
#include "resolver.h"
#include "test.h"
/* res_query("_xmpp-client._tcp.jabber.kiev.ua", C_IN, T_SRV, ...) */
static const unsigned char data1[] = {
0x95, 0xf3, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, 0x6c, 0x69, 0x65, 0x6e,
0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, 0x06, 0x6a, 0x61, 0x62, 0x62, 0x65,
0x72, 0x04, 0x6b, 0x69, 0x65, 0x76, 0x02, 0x75, 0x61, 0x00, 0x00, 0x21,
0x00, 0x01, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3b,
0x00, 0x16, 0x00, 0x01, 0x00, 0x00, 0x14, 0x66, 0x06, 0x6a, 0x61, 0x62,
0x62, 0x65, 0x72, 0x04, 0x6b, 0x69, 0x65, 0x76, 0x02, 0x75, 0x61, 0x00,
};
/* res_query("_xmpp-client._tcp.jabber.org", C_IN, T_SRV, ...) */
static const unsigned char data2[] = {
0xf2, 0x98, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, 0x6c, 0x69, 0x65, 0x6e,
0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, 0x06, 0x6a, 0x61, 0x62, 0x62, 0x65,
0x72, 0x03, 0x6f, 0x72, 0x67, 0x00, 0x00, 0x21, 0x00, 0x01, 0xc0, 0x0c,
0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x03, 0x83, 0x00, 0x1a, 0x00, 0x1e,
0x00, 0x1e, 0x14, 0x66, 0x07, 0x68, 0x65, 0x72, 0x6d, 0x65, 0x73, 0x32,
0x06, 0x6a, 0x61, 0x62, 0x62, 0x65, 0x72, 0x03, 0x6f, 0x72, 0x67, 0x00,
0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x03, 0x83, 0x00, 0x1c,
0x00, 0x1f, 0x00, 0x1e, 0x14, 0x66, 0x09, 0x68, 0x65, 0x72, 0x6d, 0x65,
0x73, 0x32, 0x76, 0x36, 0x06, 0x6a, 0x61, 0x62, 0x62, 0x65, 0x72, 0x03,
0x6f, 0x72, 0x67, 0x00,
};
/* res_query("_xmpp-client._tcp.gmail.com", C_IN, T_SRV, ...) */
static const unsigned char data3[] = {
0xda, 0xa8, 0x81, 0x80, 0x00, 0x01, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, 0x6c, 0x69, 0x65, 0x6e,
0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, 0x05, 0x67, 0x6d, 0x61, 0x69, 0x6c,
0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x21, 0x00, 0x01, 0xc0, 0x0c, 0x00,
0x21, 0x00, 0x01, 0x00, 0x00, 0x02, 0x43, 0x00, 0x1e, 0x00, 0x14, 0x00,
0x00, 0x14, 0x66, 0x04, 0x61, 0x6c, 0x74, 0x31, 0x04, 0x78, 0x6d, 0x70,
0x70, 0x01, 0x6c, 0x06, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x03, 0x63,
0x6f, 0x6d, 0x00, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x02,
0x43, 0x00, 0x1e, 0x00, 0x14, 0x00, 0x00, 0x14, 0x66, 0x04, 0x61, 0x6c,
0x74, 0x34, 0x04, 0x78, 0x6d, 0x70, 0x70, 0x01, 0x6c, 0x06, 0x67, 0x6f,
0x6f, 0x67, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0xc0, 0x0c, 0x00,
0x21, 0x00, 0x01, 0x00, 0x00, 0x02, 0x43, 0x00, 0x1e, 0x00, 0x14, 0x00,
0x00, 0x14, 0x66, 0x04, 0x61, 0x6c, 0x74, 0x32, 0x04, 0x78, 0x6d, 0x70,
0x70, 0x01, 0x6c, 0x06, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x03, 0x63,
0x6f, 0x6d, 0x00, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x02,
0x43, 0x00, 0x19, 0x00, 0x05, 0x00, 0x00, 0x14, 0x66, 0x04, 0x78, 0x6d,
0x70, 0x70, 0x01, 0x6c, 0x06, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x03,
0x63, 0x6f, 0x6d, 0x00, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00,
0x02, 0x43, 0x00, 0x1e, 0x00, 0x14, 0x00, 0x00, 0x14, 0x66, 0x04, 0x61,
0x6c, 0x74, 0x33, 0x04, 0x78, 0x6d, 0x70, 0x70, 0x01, 0x6c, 0x06, 0x67,
0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00,
};
/* res_query("_xmpp-client._tcp.jabber.calyxinstitute.org", C_IN, T_SRV, ...) */
static const unsigned char data4[] = {
0x8d, 0x58, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, // .X........
0x00, 0x00, 0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, // ..._xmpp-c
0x6c, 0x69, 0x65, 0x6e, 0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, // lient._tcp
0x06, 0x6a, 0x61, 0x62, 0x62, 0x65, 0x72, 0x0e, 0x63, 0x61, // .jabber.ca
0x6c, 0x79, 0x78, 0x69, 0x6e, 0x73, 0x74, 0x69, 0x74, 0x75, // lyxinstitu
0x74, 0x65, 0x03, 0x6f, 0x72, 0x67, 0x00, 0x00, 0x21, 0x00, // te.org..!.
0x01, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x03, // ....!.....
0x83, 0x00, 0x1e, 0x00, 0x04, 0x00, 0x00, 0x14, 0x66, 0x10, // ........f.
0x69, 0x6a, 0x65, 0x65, 0x79, 0x6e, 0x72, 0x63, 0x36, 0x78, // ijeeynrc6x
0x32, 0x75, 0x79, 0x35, 0x6f, 0x62, 0x05, 0x6f, 0x6e, 0x69, // 2uy5ob.oni
0x6f, 0x6e, 0x00, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, // on....!...
0x00, 0x03, 0x83, 0x00, 0x21, 0x00, 0x05, 0x00, 0x01, 0x14, // ....!.....
0x66, 0x06, 0x6a, 0x61, 0x62, 0x62, 0x65, 0x72, 0x0e, 0x63, // f.jabber.c
0x61, 0x6c, 0x79, 0x78, 0x69, 0x6e, 0x73, 0x74, 0x69, 0x74, // alyxinstit
0x75, 0x74, 0x65, 0x03, 0x6f, 0x72, 0x67, 0x00, // ute.org.
};
/* res_query("_xmpp-client._tcp.jabber.org", C_IN, T_SRV, ...) with pointers */
static const unsigned char data5[] = {
0x00, 0x00, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, // ..........
0x00, 0x00, 0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, // ..._xmpp-c
0x6c, 0x69, 0x65, 0x6e, 0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, // lient._tcp
0x06, 0x6a, 0x61, 0x62, 0x62, 0x65, 0x72, 0x03, 0x6f, 0x72, // .jabber.or
0x67, 0x00, 0x00, 0x21, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x21, // g..!.....!
0x00, 0x01, 0x00, 0x00, 0x01, 0x9e, 0x00, 0x12, 0x00, 0x1f, // ..........
0x00, 0x1e, 0x14, 0x66, 0x09, 0x68, 0x65, 0x72, 0x6d, 0x65, // ...f.herme
0x73, 0x32, 0x76, 0x36, 0xc0, 0x1e, 0xc0, 0x0c, 0x00, 0x21, // s2v6.....!
0x00, 0x01, 0x00, 0x00, 0x01, 0x9e, 0x00, 0x10, 0x00, 0x1e, // ..........
0x00, 0x1e, 0x14, 0x66, 0x07, 0x68, 0x65, 0x72, 0x6d, 0x65, // ...f.herme
0x73, 0x32, 0xc0, 0x1e, // s2..
};
/* hacked data2 with two empty-string targets. */
static const unsigned char data6[] = {
0xf2, 0x98, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00,
0x00, 0x0c, 0x5f, 0x78, 0x6d, 0x70, 0x70, 0x2d, 0x63, 0x6c, 0x69,
0x65, 0x6e, 0x74, 0x04, 0x5f, 0x74, 0x63, 0x70, 0x06, 0x6a, 0x61,
0x62, 0x62, 0x65, 0x72, 0x03, 0x6f, 0x72, 0x67, 0x00, 0x00, 0x21,
0x00, 0x01, 0xc0, 0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x03,
0x83, 0x00, 0x07, 0x00, 0x1e, 0x00, 0x1e, 0x14, 0x66, 0x00, 0xc0,
0x0c, 0x00, 0x21, 0x00, 0x01, 0x00, 0x00, 0x03, 0x83, 0x00, 0x08,
0x00, 0x1f, 0x00, 0x1e, 0x14, 0x66, 0xc0, 0x40,
};
static const struct {
const unsigned char *data;
size_t len;
char *target;
unsigned short port;
int target_nr;
} tests[] = {
{
.data = data1,
.len = sizeof(data1),
.target = "jabber.kiev.ua",
.port = 5222,
.target_nr = 1,
},
{
.data = data2,
.len = sizeof(data2),
.target = "hermes2.jabber.org",
.port = 5222,
.target_nr = 2,
},
{
.data = data3,
.len = sizeof(data3),
.target = "xmpp.l.google.com",
.port = 5222,
.target_nr = 5,
},
{
.data = data4,
.len = sizeof(data4),
.target = "ijeeynrc6x2uy5ob.onion",
.port = 5222,
.target_nr = 2,
},
{
.data = data5,
.len = sizeof(data5),
.target = "hermes2.jabber.org",
.port = 5222,
.target_nr = 2,
},
{
.data = data6,
.len = sizeof(data6),
.target = "",
.port = 5222,
.target_nr = 2,
},
};
static int srv_rr_list_len(resolver_srv_rr_t *list)
{
int nr;
for (nr = 0; list != NULL; ++nr, list = list->next)
;
return nr;
}
int main()
{
xmpp_ctx_t *ctx;
xmpp_rand_t *rand;
resolver_srv_rr_t *srv_rr_list;
char *domain, *rnd_b64;
unsigned char *buf;
unsigned short port;
size_t i, slen;
int ret;
ctx = xmpp_ctx_new(NULL, NULL);
assert(ctx != NULL);
printf("resolver_srv_lookup_buf() tests.\n");
for (i = 0; i < ARRAY_SIZE(tests); ++i) {
printf("Test #%zu: ", i + 1);
ret = resolver_srv_lookup_buf(ctx, tests[i].data, tests[i].len,
&srv_rr_list);
assert(ret == XMPP_DOMAIN_FOUND);
assert(srv_rr_list != NULL);
if (tests[i].target_nr != srv_rr_list_len(srv_rr_list)) {
printf("fail! got %d targets, but should be %d\n",
srv_rr_list_len(srv_rr_list), tests[i].target_nr);
return 1;
}
/* check only 1st result */
domain = srv_rr_list->target;
port = srv_rr_list->port;
COMPARE(tests[i].target, domain);
if (tests[i].port != port) {
printf("fail! got port=%u, but should be %u\n", (unsigned)port,
(unsigned)tests[i].port);
return 1;
}
printf("ok\n");
resolver_srv_free(ctx, srv_rr_list);
}
/*
* The next test case must not crash and is supposed to be checked
* under valgrind.
*/
printf("Test of a broken message: ");
rand = xmpp_rand_new(ctx);
assert(rand != NULL);
assert(sizeof(data2) > 64);
buf = strophe_alloc(ctx, sizeof(data2));
assert(buf != NULL);
memcpy(buf, data2, 64);
xmpp_rand_bytes(rand, &buf[64], sizeof(data2) - 64);
ret = resolver_srv_lookup_buf(ctx, buf, sizeof(data2), &srv_rr_list);
if (ret == XMPP_DOMAIN_FOUND && srv_rr_list != NULL)
resolver_srv_free(ctx, srv_rr_list);
xmpp_rand_free(ctx, rand);
printf("ok\n");
printf("Broken message was:\n");
rnd_b64 = xmpp_base64_encode(ctx, buf, sizeof(data2));
slen = strlen(rnd_b64);
for (i = 0; i < slen; i += 64) {
printf("%.64s\n", &rnd_b64[i]);
}
strophe_free(ctx, buf);
strophe_free(ctx, rnd_b64);
xmpp_ctx_free(ctx);
return 0;
}
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