fix arch build

ci: fix arch build
fix(xmpp): show message for empty disco#items results (XEP-0030)
2026-02-18 17:39:25 +01:00 · 2026-02-17 16:30:52 +01:00 · 2026-02-11 01:10:55 +03:00 · 2026-02-06 19:27:40 +01:00 · 2026-02-02 17:47:05 +01:00 · 2026-01-21 17:10:37 +01:00
48 changed files with 1408 additions and 382 deletions
--- a/.github/workflows/ci-code.yml
+++ b/.github/workflows/ci-code.yml
@@ -50,6 +50,9 @@ jobs:
        run: |
          grep -P 'auto_(char|gchar|gcharv|guchar|jid|sqlite|gfd|FILE)[\w *]*;$' -r src && exit -1 || true

+      - name: Check CWE-134 format string vulnerabilities
+        run: ./check-cwe134.sh
+
      - name: Install clang-format
        run: |
          sudo apt-get update
@@ -98,3 +101,13 @@ jobs:
      - name: Check spelling
        run: |
          codespell
+
+  coverage:
+    runs-on: ubuntu-latest
+    name: Code Coverage
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build and run coverage
+        run: |
+          docker build -f Dockerfile.arch -t profanity-cov .
+          docker run profanity-cov ./ci-build.sh --coverage-only
--- a/.gitignore
+++ b/.gitignore
@@ -62,6 +62,8 @@ tests/unittests/unittests
 tests/unittests/unittests.log
 tests/unittests/unittests.trs
 test-suite.log
+test-files/
+test-logs/

 # valgrind output
 profval*
@@ -107,3 +109,8 @@ breaks
 *.tar.*
 *.zip
 *.log*
+coverage/
+*.gcno
+*.gcda
+*.gcov
+coverage.info
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -90,6 +90,24 @@ set -e
 ```

 This will run the same tests that the CI runs and refuse the push if it fails.
+The CI script runs 4 parallel builds with different configurations:
+- **Full** — all features enabled (+ coverage in `--coverage-only` mode)
+- **Minimal** — all optional features disabled
+- **NoEncrypt** — no encryption (OTR, PGP, OMEMO disabled)
+- **Default** — default ./configure options
+
+Each build runs Valgrind and functional tests on Linux.
+Use `./ci-build.sh --coverage-only` to run only the Full build with coverage collection.
+
+Output shows test results per build:
+```
+✓ Full PASSED
+  Unit tests:       437 passed, 0 failed
+  Functional tests: 69 passed, 0 failed
+  Coverage:         Lines: 27.5% | Functions: 36.2% | Branches: 18.1%
+  Duration:         5m39s
+```
+
 Note that it will run on the actual content of the repository directory and not
 what may have been staged/committed.

@@ -126,6 +144,16 @@ scan-build make
 scan-view ...
 ```

+### Security checks
+
+We have a static analyzer `check-cwe134.sh` that detects CWE-134 format string vulnerabilities. It runs automatically in CI but you can also run it locally:
+
+```bash
+./check-cwe134.sh
+```
+
+This checks for unsafe patterns where data could be passed directly as a format string to functions like `printf`, `cons_show`, etc. Never pass a raw string for formatting; use `"%s"` format specifier instead.
+
 ### Finding typos

 We include a `.codespellrc` configuration file for `codespell` in the root directory.
@@ -147,9 +175,28 @@ The functional test suite uses [stabber](https://git.jabber.space/devs/stabber)
 Functional tests require stabber to be installed. Once installed, tests run as part of `make check`:

 ```bash
-make check
+make check                      # Run all tests (unit + functional)
+make check-functional-parallel  # Run functional tests in parallel (~3x faster)
+./tests/functionaltests/functionaltests    # Run all functional tests sequentially
+./tests/functionaltests/functionaltests 1  # Run specific group (1-4)
 ```

+#### Test groups
+
+Tests are organized into 4 groups for parallel execution:
+
+| Group | Description |
+|-------|-------------|
+| 1 | Connect, Ping, Rooms, Software |
+| 2 | Message, Receipts, Roster, Chat Session |
+| 3 | Presence, Disconnect |
+| 4 | MUC, Carbons |
+
+To add a new group:
+1. Define the test array in `functionaltests.c`
+2. Add entry to `groups[]` array
+3. Update `FUNC_TEST_GROUPS` in `Makefile.am`
+
 #### Writing functional tests

 Use content-based stubbing with stabber:
@@ -168,4 +215,5 @@ Guidelines:
 2. Use `stbbr_send(xml)` for presence, message, and other push-style stanzas.
 3. Keep assertions tolerant of ordering when possible; use `prof_output_regex()` for flexible matching.
 4. If timing issues appear, use `prof_timeout()` around critical expectations and reset afterwards.
+5. When adding new tests, place them in the appropriate group based on functionality.

--- a/Dockerfile.arch
+++ b/Dockerfile.arch
@@ -1,8 +1,10 @@
-FROM archlinux
+FROM archlinux:latest

 ENV TERM=xterm
+ENV CC="ccache gcc"
+
+RUN pacman -Syyu --noconfirm

-RUN pacman -Syu --noconfirm
 # reflector is optional - if it fails due to network issues, continue with default mirrorlist
 RUN pacman -S --needed --noconfirm reflector && \
    (reflector --latest 20 --protocol https --sort rate --save /etc/pacman.d/mirrorlist || true)
@@ -12,9 +14,12 @@ RUN pacman -S --needed --noconfirm \
  autoconf-archive \
  automake \
  base-devel \
+  ca-certificates \
+  ccache \
  check \
  cmake \
  cmocka \
+  lcov \
  curl \
  debuginfod \
  doxygen \
@@ -61,12 +66,12 @@ USER root
 RUN pacman -U --noconfirm libstrophe-git/libstrophe-git-*.pkg.tar.zst

 WORKDIR /usr/src
-RUN git clone -c http.sslverify=false https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber

 WORKDIR /usr/src/stabber
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr --disable-dependency-tracking
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src/profanity
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -3,13 +3,17 @@ FROM debian:testing

 ENV DEBIAN_FRONTEND="noninteractive"
 ENV TERM=xterm
+ENV CC="ccache gcc"

 RUN apt-get update && apt-get install -y --no-install-recommends \
  autoconf \
  autoconf-archive \
  automake \
+  ca-certificates \
+  ccache \
  gcc \
  git \
+  lcov \
  libcmocka-dev \
  libcurl3-dev \
  libgcrypt-dev \
@@ -37,19 +41,19 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 RUN mkdir -p /usr/src/{stabber,libstrophe,profanity}
 WORKDIR /usr/src

-RUN git clone -c http.sslverify=false https://git.jabber.space/devs/stabber
-RUN git clone -c http.sslverify=false https://github.com/strophe/libstrophe
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://github.com/strophe/libstrophe

 WORKDIR /usr/src/stabber
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr --disable-dependency-tracking
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src/libstrophe
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src/profanity
--- a/Dockerfile.fedora
+++ b/Dockerfile.fedora
@@ -1,6 +1,9 @@
 # Build the latest Fedora image
 FROM fedora:latest

+ENV TERM=xterm
+ENV CC="ccache gcc"
+
 # libmicrohttpd - for stabber
 # glibc-locale - to have en_US locale
 RUN dnf install -y \
@@ -8,8 +11,11 @@ RUN dnf install -y \
  autoconf-archive \
  automake \
  awk \
+  ca-certificates \
+  ccache \
  gcc \
  git \
+  lcov \
  glib2-devel \
  glibc-all-langpacks \
  gtk2-devel \
@@ -45,20 +51,20 @@ ENV TERM=xterm
 RUN mkdir -p /usr/src
 WORKDIR /usr/src

-RUN git clone -c http.sslverify=false https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber
 WORKDIR /usr/src/stabber
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr --disable-dependency-tracking
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src
 RUN mkdir -p /usr/src/libstrophe
-RUN git clone -c http.sslverify=false https://github.com/strophe/libstrophe
+RUN git clone --depth 1 https://github.com/strophe/libstrophe
 WORKDIR /usr/src/libstrophe
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr
-RUN make
+RUN make -j$(nproc)
 RUN make install

 RUN mkdir -p /usr/src/profanity
--- a/Dockerfile.tumbleweed
+++ b/Dockerfile.tumbleweed
@@ -1,14 +1,20 @@
 # Build the latest openSUSE Tumbleweed image
 FROM opensuse/tumbleweed

+ENV TERM=xterm
+ENV CC="ccache gcc"
+
 # libmicrohttpd - for stabber
 # glibc-locale - to have en_US locale
 RUN zypper --non-interactive in --no-recommends \
  autoconf \
  autoconf-archive \
  automake \
+  ca-certificates \
+  ccache \
  gcc \
  git \
+  lcov \
  glib2-devel \
  glibc-locale \
  gtk2-devel \
@@ -44,11 +50,11 @@ ENV TERM=xterm
 RUN mkdir -p /usr/src
 WORKDIR /usr/src

-RUN git clone -c http.sslverify=false https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber
 WORKDIR /usr/src/stabber
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr --disable-dependency-tracking
-RUN make
+RUN make -j$(nproc)
 RUN make install

 RUN mkdir -p /usr/src/profanity
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -2,13 +2,17 @@ FROM ubuntu:latest

 ENV DEBIAN_FRONTEND="noninteractive"
 ENV TERM=xterm
+ENV CC="ccache gcc"

 RUN apt-get update && apt-get install -y --no-install-recommends \
  autoconf \
  autoconf-archive \
  automake \
+  ca-certificates \
+  ccache \
  gcc \
  git \
+  lcov \
  libcmocka-dev \
  libcurl3-dev \
  libgcrypt-dev \
@@ -36,19 +40,19 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 RUN mkdir -p /usr/src/{stabber,libstrophe,profanity}
 WORKDIR /usr/src

-RUN git clone -c http.sslverify=false https://git.jabber.space/devs/stabber
-RUN git clone -c http.sslverify=false https://github.com/strophe/libstrophe
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://github.com/strophe/libstrophe

 WORKDIR /usr/src/stabber
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr --disable-dependency-tracking
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src/libstrophe
 RUN ./bootstrap.sh
 RUN ./configure --prefix=/usr
-RUN make
+RUN make -j$(nproc)
 RUN make install

 WORKDIR /usr/src/profanity
--- a/Makefile.am
+++ b/Makefile.am
@@ -185,6 +185,7 @@ functionaltest_sources = \
 	tests/functionaltests/test_software.c tests/functionaltests/test_software.h \
 	tests/functionaltests/test_muc.c tests/functionaltests/test_muc.h \
 	tests/functionaltests/test_disconnect.c tests/functionaltests/test_disconnect.h \
+	tests/functionaltests/test_lastactivity.c tests/functionaltests/test_lastactivity.h \
 	tests/functionaltests/functionaltests.c

 main_source = src/main.c
@@ -286,7 +287,7 @@ endif

 TESTS = tests/unittests/unittests
 check_PROGRAMS = tests/unittests/unittests
-tests_unittests_unittests_CPPFLAGS = -Itests/
+tests_unittests_unittests_CPPFLAGS = -I$(srcdir)/tests
 tests_unittests_unittests_SOURCES = $(unittest_sources)
 tests_unittests_unittests_LDADD = -lcmocka

@@ -302,9 +303,32 @@ if HAVE_FORKPTY
 TESTS += tests/functionaltests/functionaltests
 check_PROGRAMS += tests/functionaltests/functionaltests
 tests_functionaltests_functionaltests_SOURCES = $(functionaltest_sources)
-tests_functionaltests_functionaltests_CPPFLAGS = -Itests/
+tests_functionaltests_functionaltests_CPPFLAGS = -I$(srcdir)/tests
 tests_functionaltests_functionaltests_CFLAGS = $(AM_CFLAGS)
 tests_functionaltests_functionaltests_LDADD = -lcmocka -lstabber @FORKPTY_LIB@
+
+# Parallel functional tests target (~3x faster than sequential)
+# Usage: make check-functional-parallel
+# To add more groups: increase FUNC_TEST_GROUPS and add group in functionaltests.c
+FUNC_TEST_GROUPS = 1 2 3 4
+
+check-functional-parallel: tests/functionaltests/functionaltests
+	@echo "Running functional tests in parallel ($(words $(FUNC_TEST_GROUPS)) groups)..."
+	@mkdir -p $(builddir)/test-logs $(builddir)/test-files
+	@pids=""; \
+	for g in $(FUNC_TEST_GROUPS); do \
+		./tests/functionaltests/functionaltests $$g > $(builddir)/test-logs/group$$g.log 2>&1 & \
+		pids="$$pids $$!"; \
+	done; \
+	failed=0; i=1; \
+	for pid in $$pids; do \
+		wait $$pid || { echo "Group $$i FAILED"; cat $(builddir)/test-logs/group$$i.log; failed=1; }; \
+		i=$$((i + 1)); \
+	done; \
+	echo "=== Test Results Summary ==="; \
+	grep -E 'PASSED|FAILED|Running' $(builddir)/test-logs/group*.log || true; \
+	if [ $$failed -ne 0 ]; then echo "FUNCTIONAL TESTS FAILED"; exit 1; fi; \
+	echo "All functional test groups passed!"
 endif
 endif

@@ -349,7 +373,10 @@ clean-local:
 	rm -f $(git_include) $(git_include).in
 endif

-.PHONY: my-prof.supp
+clean-functional-tests:
+	rm -rf $(builddir)/test-files $(builddir)/test-logs
+
+.PHONY: my-prof.supp clean-functional-tests
 my-prof.supp:
 	@sed '/^# AUTO-GENERATED START/q' prof.supp > $@
 	@printf "\n\n# glib\n" >> $@
@@ -365,7 +392,21 @@ check-unit: tests/unittests/unittests
 	tests/unittests/unittests

@VALGRIND_CHECK_RULES@
-VALGRIND_SUPPRESSIONS_FILES=prof.supp
+VALGRIND_SUPPRESSIONS_FILES=$(srcdir)/prof.supp
+
+# Code coverage targets (requires --enable-coverage)
+coverage-clean:
+	find . -name '*.gcda' -delete
+	find . -name '*.gcno' -delete
+	rm -rf coverage-html coverage.info
+
+coverage-report: check
+	lcov --capture --directory . --output-file coverage.info --ignore-errors inconsistent
+	lcov --remove coverage.info '/usr/*' '*/tests/*' --output-file coverage.info --ignore-errors inconsistent
+	genhtml coverage.info --output-directory coverage-html
+	@echo "Coverage report generated in coverage-html/index.html"
+
+.PHONY: coverage-clean coverage-report

 format: $(all_c_sources)
 	clang-format -i $(all_c_sources)
--- a/check-cwe134.sh
+++ b/check-cwe134.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+# check-cwe134.sh - Static analysis for CWE-134 format string vulnerabilities
+#
+# This script detects potentially unsafe usage of format string functions
+# where user-controlled data may be passed without "%s" wrapper.
+#
+# Usage: ./check-cwe134.sh [directory]
+
+set -e
+
+DIR="${1:-src}"
+
+echo "=== CWE-134 Format String Vulnerability Check ==="
+echo "Scanning: $DIR"
+echo ""
+
+# Functions that accept format strings
+FORMAT_FUNCS="cons_show|cons_debug|cons_show_error|log_info|log_error|log_warning|log_debug|win_println|win_print"
+
+ERRORS=0
+
+echo "Checking for unsafe format string usage..."
+echo ""
+
+# Pattern 1: function call with single variable argument (no format string)
+# Example: cons_show(variable);  - BAD
+# Example: cons_show("%s", variable);  - OK
+# Matches: func(identifier) or func(identifier->member) or func(identifier[index])
+RESULTS=$(grep -rn --include="*.c" -P "($FORMAT_FUNCS)\s*\(\s*[a-zA-Z_][a-zA-Z0-9_]*(\s*->\s*\w+|\s*\[\s*\w+\s*\])?\s*\)\s*;" "$DIR" 2>/dev/null || true)
+
+# Filter out function definitions, declarations, and safe api_* wrappers
+RESULTS=$(echo "$RESULTS" | grep -v "const char\|void \|^[^:]*:[0-9]*:[a-z_]*(\|api_cons_show\|api_log_" || true)
+
+if [ -n "$RESULTS" ]; then
+    echo "❌ POTENTIAL CWE-134 VULNERABILITIES FOUND:"
+    echo ""
+    echo "$RESULTS"
+    echo ""
+    ERRORS=$(echo "$RESULTS" | wc -l)
+else
+    echo "✅ No obvious CWE-134 issues found."
+fi
+
+# Additional check: GString->str passed directly (not as %s argument)
+echo ""
+echo "Checking for GString->str passed to format functions..."
+
+GSTRING_RESULTS=$(grep -rn --include="*.c" -P "($FORMAT_FUNCS)\s*\([^)]*->str\s*\)" "$DIR" 2>/dev/null | grep -v '"%s"' || true)
+
+if [ -n "$GSTRING_RESULTS" ]; then
+    echo "⚠️  GString->str passed without \"%s\" (review manually):"
+    echo ""
+    echo "$GSTRING_RESULTS"
+    echo ""
+fi
+
+echo ""
+echo "=== Summary ==="
+echo "Critical issues: $ERRORS"
+
+if [ "$ERRORS" -gt 0 ]; then
+    echo ""
+    echo "Fix by adding \"%s\" format specifier:"
+    echo "  BAD:  cons_show(variable);"
+    echo "  GOOD: cons_show(\"%s\", variable);"
+    exit 1
+fi
+
+exit 0
--- a/ci-build.sh
+++ b/ci-build.sh
@@ -15,14 +15,145 @@ error_handler()
    log_content ./test-suite.log
    log_content ./test-suite-memcheck.log

-    echo
-    echo "Error ${ERR_CODE} with command '${BASH_COMMAND}' on line ${BASH_LINENO[0]}. Exiting."
-    echo
+    echo >&2
+    echo "Error ${ERR_CODE} with command '${BASH_COMMAND}' on line ${BASH_LINENO[0]}. Exiting." >&2
+    echo >&2
    exit ${ERR_CODE}
 }

 trap error_handler ERR

+# =============================================================================
+# Constants
+# =============================================================================
+
+# Number of parallel build configurations
+readonly TEST_BUILDS=4
+
+# Human-readable names for each build configuration
+readonly BUILD_NAMES=(
+    "Full"      # 1. All features enabled
+    "Minimal"   # 2. All optional features disabled
+    "NoEncrypt" # 3. No encryption (otr, pgp, omemo disabled)
+    "Default"   # 4. Default ./configure options
+)
+
+# Regex patterns for parsing test output
+readonly CMOCKA_PASSED_PATTERN='^\[  PASSED  \] [0-9]+ test'
+readonly CMOCKA_FAILED_PATTERN='^\[  FAILED  \] [0-9]+ test'
+
+# Coverage extraction patterns (matches both Docker and CI paths)
+readonly COVERAGE_PATTERNS='*/profanity/src/* */src/src/*'
+
+# =============================================================================
+# Helper Functions
+# =============================================================================
+
+# Parse STATS line from build log and set global variables
+# Usage: parse_build_stats <log_file>
+parse_build_stats() {
+    local log_file="$1"
+    local stats_line
+    stats_line=$(grep "^STATS:" "$log_file" 2>/dev/null | tail -1)
+    
+    STAT_UNIT_P=$(echo "$stats_line" | grep -oE "unit_passed=[0-9]+" | cut -d= -f2)
+    STAT_UNIT_F=$(echo "$stats_line" | grep -oE "unit_failed=[0-9]+" | cut -d= -f2)
+    STAT_FUNC_P=$(echo "$stats_line" | grep -oE "func_passed=[0-9]+" | cut -d= -f2)
+    STAT_FUNC_F=$(echo "$stats_line" | grep -oE "func_failed=[0-9]+" | cut -d= -f2)
+    STAT_COV_LINES=$(echo "$stats_line" | grep -oE "cov_lines=[0-9.]+%|cov_lines=n/a" | cut -d= -f2)
+    STAT_COV_FUNCS=$(echo "$stats_line" | grep -oE "cov_funcs=[0-9.]+%|cov_funcs=n/a" | cut -d= -f2)
+    STAT_COV_BRANCHES=$(echo "$stats_line" | grep -oE "cov_branches=[0-9.]+%|cov_branches=n/a" | cut -d= -f2)
+    STAT_TIME=$(echo "$stats_line" | grep -oE "time=[0-9]+m[0-9]+s" | cut -d= -f2)
+    
+    : "${STAT_UNIT_P:=0}"
+    : "${STAT_UNIT_F:=0}"
+    : "${STAT_FUNC_P:=0}"
+    : "${STAT_FUNC_F:=0}"
+}
+
+# Extract test count from log file
+# Usage: extract_test_count <log_file> <pattern>
+extract_test_count() {
+    grep -E "$2" "$1" 2>/dev/null | grep -oE "[0-9]+" | head -1
+}
+
+# =============================================================================
+# Test Verification
+# =============================================================================
+
+# Verify that test failures are properly detected
+# This is a meta-test: it runs a deliberately failing test
+# and checks that the test framework reports the failure correctly
+verify_test_failure_detection()
+{
+    echo
+    echo "==> Verifying test failure detection..."
+    
+    # Create a simple failing test
+    cat > /tmp/test_must_fail.c << 'EOF'
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+
+static void test_that_must_fail(void **state) {
+    (void)state;
+    assert_true(0); // This MUST fail
+}
+
+int main(void) {
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(test_that_must_fail),
+    };
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
+EOF
+    
+    # Compile the failing test
+    if ! gcc -o /tmp/test_must_fail /tmp/test_must_fail.c -lcmocka 2>/dev/null; then
+        echo "Warning: Could not compile test failure verification (cmocka not available?)"
+        echo "Skipping test failure detection verification"
+        return 0
+    fi
+    
+    # Test 1: Single failing test detection
+    echo "  Testing single test failure detection..."
+    if /tmp/test_must_fail > /tmp/test_must_fail.log 2>&1; then
+        echo "ERROR: Test that should fail returned success (exit code 0)" >&2
+        echo "This means the test framework is NOT detecting failures correctly!" >&2
+        echo "--- Test output ---" >&2
+        cat /tmp/test_must_fail.log >&2
+        echo "--- End output ---" >&2
+        rm -f /tmp/test_must_fail /tmp/test_must_fail.c /tmp/test_must_fail.log
+        exit 1
+    fi
+    echo "  ✓ Single test failure correctly detected"
+    
+    # Test 2: Parallel failure detection (simulates check-functional-parallel)
+    echo "  Testing parallel test failure detection..."
+    failed=0
+    /tmp/test_must_fail > /tmp/p1.log 2>&1 & pid1=$!
+    true > /tmp/p2.log 2>&1 & pid2=$!  # This passes
+    /tmp/test_must_fail > /tmp/p3.log 2>&1 & pid3=$!
+    true > /tmp/p4.log 2>&1 & pid4=$!  # This passes
+    
+    wait $pid1 || failed=$((failed + 1))
+    wait $pid2 || failed=$((failed + 1))
+    wait $pid3 || failed=$((failed + 1))
+    wait $pid4 || failed=$((failed + 1))
+    
+    if [ $failed -ne 2 ]; then
+        echo "ERROR: Expected 2 failures in parallel tests, got $failed" >&2
+        echo "Parallel failure detection is broken!" >&2
+        rm -f /tmp/test_must_fail /tmp/test_must_fail.c /tmp/test_must_fail.log /tmp/p?.log
+        exit 1
+    fi
+    echo "  ✓ Parallel test failures correctly detected (2 of 4 failed as expected)"
+    
+    rm -f /tmp/test_must_fail /tmp/test_must_fail.c /tmp/test_must_fail.log /tmp/p?.log
+    echo "✓ Test failure detection verified"
+}
+
 num_cores()
 {
    # Check for cores, for systems with:
@@ -34,6 +165,20 @@ num_cores()
        || getconf _NPROCESSORS_ONLN 2>/dev/null
 }

+# Run test failure detection verification first
+verify_test_failure_detection
+
+# Parse arguments
+COVERAGE_ONLY=no
+for arg in "$@"; do
+    case "$arg" in
+        --coverage-only)
+            COVERAGE_ONLY=yes
+            shift
+            ;;
+    esac
+done
+
 ./bootstrap.sh

 tests=()
@@ -44,7 +189,7 @@ ARCH="$(uname | tr '[:upper:]' '[:lower:]')"

 case "$ARCH" in
    linux*)
-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
        tests=(
        # 1. Full build (all features enabled)
        "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -56,15 +201,13 @@ case "$ARCH" in
        --disable-python-plugins --without-xscreensaver --disable-omemo-qrcode --disable-gdk-pixbuf"
        # 3. No encryption (disable otr, pgp, omemo)
        "--disable-pgp --disable-otr --disable-omemo --disable-omemo-qrcode"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
        ""
        )
        source /etc/profile.d/debuginfod.sh 2>/dev/null || true
        ;;
    darwin*)
-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
        tests=(
        # 1. Full build (all features enabled)
        "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -76,9 +219,7 @@ case "$ARCH" in
        --disable-python-plugins"
        # 3. No encryption (disable otr, pgp, omemo)
        "--disable-pgp --disable-otr --disable-omemo"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
        ""
        )
        ;;
@@ -90,7 +231,7 @@ case "$ARCH" in
        # src/event/server_events.c:1454:19: error: universal character names are only valid in C++ and C99
        CC="egcc -std=gnu99 -fexec-charset=UTF-8"

-        # Reduced set of configurations for faster CI
+        # 4 configurations for parallel CI
        tests=(
        # 1. Full build (all features enabled)
        "--enable-notifications --enable-icons-and-clipboard --enable-otr --enable-pgp
@@ -102,45 +243,230 @@ case "$ARCH" in
        --disable-python-plugins"
        # 3. No encryption (disable otr, pgp, omemo)
        "--disable-pgp --disable-otr --disable-omemo"
-        # 4. No plugins
-        "--disable-plugins --disable-c-plugins --disable-python-plugins"
-        # 5. Default configuration
+        # 4. Default configuration
        ""
        )
        ;;
 esac

-case "$ARCH" in
-    linux*)
-         echo
-         echo "--> Building with ./configure ${tests[0]} --enable-valgrind $*"
-         echo
+# Function to build and test a single configuration
+build_and_test() {
+    local features="$1"
+    local extra_args="$2"
+    local idx="$3"
+    local run_valgrind="$4"
+    local run_coverage="$5"
+    local build_dir="build-$idx"
+    local log_file="build-$idx.log"

-         # shellcheck disable=SC2086
-        ./configure ${tests[0]} --enable-valgrind $*
+    {
+        echo "=== Build $idx started at $(date) ==="
+        echo "--> Building in $build_dir with ./configure -C $features $extra_args"

-        $MAKE CC="${CC}"
-        if grep '^ID=' /etc/os-release | grep -q -e debian; then
-            $MAKE check-valgrind
-        else
-            $MAKE check-valgrind || log_content ./test-suite-memcheck.log
+        local start_time=$SECONDS
+
+        mkdir -p "$build_dir"
+        cd "$build_dir"
+
+        # shellcheck disable=SC2086
+        if ! ../configure -C $features $extra_args; then
+            echo "ERROR: configure failed"
+            exit 1
        fi
-        $MAKE distclean
-        ;;
-esac

-for features in "${tests[@]}"
-do
+        if ! $MAKE CC="${CC}"; then
+            echo "ERROR: make failed"
+            exit 1
+        fi
+
+        # Run unit tests
+        local unit_passed=0 unit_failed=0
+        if [ "$run_valgrind" = "yes" ]; then
+            echo "--> Running unit tests under Valgrind..."
+            # Build unit tests first
+            $MAKE tests/unittests/unittests
+            # Run valgrind directly to capture cmocka output
+            valgrind --error-exitcode=1 --leak-check=full \
+                --suppressions=../prof.supp \
+                tests/unittests/unittests 2>&1 | tee unit-tests-output.log
+            valgrind_exit=${PIPESTATUS[0]}
+            if [ $valgrind_exit -ne 0 ]; then
+                echo "ERROR: Valgrind unit tests failed (exit code $valgrind_exit)"
+                exit 1
+            fi
+        else
+            echo "--> Running unit tests..."
+            $MAKE tests/unittests/unittests
+            tests/unittests/unittests 2>&1 | tee unit-tests-output.log
+            if [ ${PIPESTATUS[0]} -ne 0 ]; then
+                echo "ERROR: Unit tests failed"
+                exit 1
+            fi
+        fi
+        # Extract unit test counts from cmocka output
+        unit_passed=$(extract_test_count unit-tests-output.log "$CMOCKA_PASSED_PATTERN")
+        unit_failed=$(extract_test_count unit-tests-output.log "$CMOCKA_FAILED_PATTERN")
+        : "${unit_passed:=0}" "${unit_failed:=0}"
+        echo "UNIT_TESTS: passed=$unit_passed failed=$unit_failed"
+
+        # Set build index for port allocation: build 1 uses ports 5230-5233,
+        # build 2 uses 5234-5237, etc. This prevents port conflicts in parallel builds.
+        export PROF_BUILD_INDEX=$idx
+        local func_passed=0 func_failed=0
+        if ! $MAKE check-functional-parallel; then
+            echo "ERROR: functional tests failed"
+            exit 1
+        fi
+        # Extract functional test counts from group logs
+        echo "=== Functional test results ==="
+        for glog in ./test-logs/group*.log; do
+            if [ -f "$glog" ]; then
+                cnt=$(extract_test_count "$glog" "$CMOCKA_PASSED_PATTERN")
+                [ -n "$cnt" ] && func_passed=$((func_passed + cnt))
+                cnt=$(extract_test_count "$glog" "$CMOCKA_FAILED_PATTERN")
+                [ -n "$cnt" ] && func_failed=$((func_failed + cnt))
+            fi
+        done
+        echo "FUNC_TESTS: passed=$func_passed failed=$func_failed"
+
+        # Collect coverage data if enabled (lines, functions, branches)
+        # Must be done BEFORE make clean which removes .gcda files
+        local cov_lines="n/a" cov_funcs="n/a" cov_branches="n/a"
+        if [ "$run_coverage" = "yes" ]; then
+            echo "--> Collecting coverage data..."
+            if command -v lcov >/dev/null 2>&1; then
+                lcov --capture --directory . --output-file coverage-full.info \
+                    --rc lcov_branch_coverage=1 --ignore-errors inconsistent 2>&1 || true
+                # Extract only production code from src/ directory, exclude tests
+                # shellcheck disable=SC2086
+                lcov --extract coverage-full.info $COVERAGE_PATTERNS \
+                    --output-file coverage.info \
+                    --rc lcov_branch_coverage=1 --ignore-errors inconsistent 2>&1 || true
+                if [ -f coverage.info ] && [ -s coverage.info ]; then
+                    local summary
+                    summary=$(lcov --summary coverage.info \
+                        --rc lcov_branch_coverage=1 --ignore-errors inconsistent 2>&1 || true)
+                    cov_lines=$(echo "$summary" | grep -E "lines\.*:" | grep -oE "[0-9]+\.[0-9]+%" | head -1)
+                    cov_funcs=$(echo "$summary" | grep -E "functions\.*:" | grep -oE "[0-9]+\.[0-9]+%" | head -1)
+                    cov_branches=$(echo "$summary" | grep -E "branches\.*:" | grep -oE "[0-9]+\.[0-9]+%" | head -1)
+                    [ -z "$cov_lines" ] && cov_lines="n/a"
+                    [ -z "$cov_funcs" ] && cov_funcs="n/a"
+                    [ -z "$cov_branches" ] && cov_branches="n/a"
+                else
+                    echo "WARNING: coverage.info is empty or not created"
+                fi
+            else
+                echo "WARNING: lcov not found"
+            fi
+            echo "COVERAGE: lines=$cov_lines funcs=$cov_funcs branches=$cov_branches"
+        fi
+
+        ./profanity -v
+
+        # Save coverage.info before cleanup (for CI artifact)
+        # Only copy in CI environment to avoid leaving artifacts during local runs
+        if [ "$run_coverage" = "yes" ] && [ -f coverage.info ] && [ -n "$CI" ]; then
+            cp coverage.info ../coverage.info
+            echo "Coverage report saved to coverage.info"
+        fi
+
+        $MAKE clean
+
+        cd ..
+        rm -rf "$build_dir"
+
+        local elapsed=$((SECONDS - start_time))
+        local mins=$((elapsed / 60))
+        local secs=$((elapsed % 60))
+
+        echo "=== Build $idx completed at $(date) ==="
+        echo "STATS: unit_passed=$unit_passed unit_failed=$unit_failed func_passed=$func_passed func_failed=$func_failed cov_lines=$cov_lines cov_funcs=$cov_funcs cov_branches=$cov_branches time=${mins}m${secs}s"
+    } > "$log_file" 2>&1
+}
+
+# Run configurations
+# Coverage enabled only for build 1 (Full) - it has most code paths
+echo
+echo "=== Start build ==="
+echo
+
+if [ "$COVERAGE_ONLY" = "yes" ]; then
+    echo "Running coverage-only mode (${BUILD_NAMES[0]} build)..."
    echo
-    echo "--> Building with ./configure ${features} $*"
+    run_valgrind="no"
+    run_coverage="yes"
+    extra_flags="--enable-coverage"
+    build_and_test "${tests[0]}" "$* $extra_flags" "1" "$run_valgrind" "$run_coverage" &
+    pids=("$!")
+    echo "  → ${BUILD_NAMES[0]}: ${tests[0]} [+Coverage]"
+else
+    echo "Starting $TEST_BUILDS parallel build configurations..."
    echo
+    pids=()
+    for idx in $(seq 1 $TEST_BUILDS); do
+        if [ $idx -le ${#tests[@]} ]; then
+            # All builds run Valgrind on Linux
+            if [ "$ARCH" = "linux" ]; then
+                run_valgrind="yes"
+                extra_flags="--enable-valgrind"
+            else
+                run_valgrind="no"
+                extra_flags=""
+            fi
+            run_coverage="no"
+            build_and_test "${tests[$((idx-1))]}" "$* $extra_flags" "$idx" "$run_valgrind" "$run_coverage" &
+            pids+=("$!")
+            flags_desc=""
+            [ "$run_valgrind" = "yes" ] && flags_desc=" [+Valgrind]"
+            echo "  → ${BUILD_NAMES[$((idx-1))]}: ${tests[$((idx-1))]}$flags_desc"
+        fi
+    done
+fi
+echo

-    # shellcheck disable=SC2086
-    ./configure $features $*
-
-    $MAKE CC="${CC}"
-    $MAKE check
-
-    ./profanity -v
-    $MAKE clean
+# Wait for all builds and check exit codes
+echo "Waiting for builds to complete..."
+echo
+failed_builds=()
+for i in "${!pids[@]}"; do
+    idx=$((i + 1))
+    if wait "${pids[$i]}"; then
+        if [ -f "build-$idx.log" ]; then
+            parse_build_stats "build-$idx.log"
+            
+            echo "✓ ${BUILD_NAMES[$i]} PASSED"
+            echo "  Unit tests:       $STAT_UNIT_P passed, $STAT_UNIT_F failed"
+            echo "  Functional tests: $STAT_FUNC_P passed, $STAT_FUNC_F failed"
+            if [ "$STAT_COV_LINES" != "n/a" ] && [ -n "$STAT_COV_LINES" ]; then
+                echo "  Coverage:         Lines: $STAT_COV_LINES | Functions: $STAT_COV_FUNCS | Branches: $STAT_COV_BRANCHES"
+            fi
+            echo "  Duration:         ${STAT_TIME:-?}"
+        else
+            echo "✓ ${BUILD_NAMES[$i]} passed (no stats available)"
+        fi
+    else
+        echo "✗ ${BUILD_NAMES[$i]} FAILED" >&2
+        failed_builds+=("$idx")
+    fi
+    echo
 done
+
+# Show failed builds full logs
+for idx in "${failed_builds[@]}"; do
+    if [ -f "build-$idx.log" ]; then
+        echo "=== ${BUILD_NAMES[$((idx-1))]} FAILURE LOG ===" >&2
+        cat "build-$idx.log" >&2
+        echo >&2
+    fi
+done
+
+if [ ${#failed_builds[@]} -gt 0 ]; then
+    echo "RESULT: FAILED (builds ${failed_builds[*]})" >&2
+    exit 1
+else
+    if [ "$COVERAGE_ONLY" = "yes" ]; then
+        echo "RESULT: COVERAGE BUILD PASSED ✓"
+    else
+        echo "RESULT: ALL $TEST_BUILDS BUILDS PASSED ✓"
+    fi
+fi
--- a/configure.ac
+++ b/configure.ac
@@ -69,6 +69,8 @@ AC_ARG_ENABLE([gdk-pixbuf],
    [AS_HELP_STRING([--enable-gdk-pixbuf], [enable GDK Pixbuf support to scale avatars before uploading])])
 AC_ARG_ENABLE([omemo-qrcode],
    [AS_HELP_STRING([--enable-omemo-qrcode], [enable ability to display omemo qr code])])
+AC_ARG_ENABLE([coverage],
+    [AS_HELP_STRING([--enable-coverage], [enable code coverage analysis])])

 m4_include([m4/ax_valgrind_check.m4])
 AX_VALGRIND_DFLT([drd], [off])
@@ -386,6 +388,11 @@ AC_SUBST([FORKPTY_LIB])
 AM_CFLAGS="$AM_CFLAGS -Wall -Wno-deprecated-declarations -std=gnu99 -ggdb3"
 AM_LDFLAGS="$AM_LDFLAGS -export-dynamic"

+AS_IF([test "x$enable_coverage" = xyes],
+    [AM_CFLAGS="$AM_CFLAGS --coverage -O0"
+     AM_LDFLAGS="$AM_LDFLAGS --coverage"
+     AC_MSG_NOTICE([Code coverage analysis enabled])])
+
 AS_IF([test "x$PACKAGE_STATUS" = xdevelopment],
    [AM_CFLAGS="$AM_CFLAGS -Wunused -Werror"])
 AS_IF([test "x$PLATFORM" = xosx],
--- a/prof.supp
+++ b/prof.supp
@@ -8,6 +8,29 @@
 # * python suppressions file from https://github.com/python/cpython/blob/main/Misc/valgrind-python.supp
 #

+# ============================================
+# glibc AVX2 optimizations (false positives)
+# See: https://sourceware.org/bugzilla/show_bug.cgi?id=19796
+# ============================================
+
+{
+  glibc_wcpncpy_avx2
+  Memcheck:Addr32
+  fun:__wcpncpy_avx2
+  fun:wcsxfrm_l
+  fun:g_utf8_collate_key
+  ...
+}
+
+{
+  glibc_wcsxfrm_avx2
+  Memcheck:Addr32
+  ...
+  fun:wcsxfrm_l
+  fun:g_utf8_collate_key
+  ...
+}
+
 # ============================================
 # Functional tests suppressions (stabber/pthread)
 # ============================================
--- a/src/command/cmd_defs.c
+++ b/src/command/cmd_defs.c
@@ -2825,16 +2825,15 @@ cmd_search_index_any(char* term)
    int terms_len = g_strv_length(processed_terms);

    for (int i = 0; i < terms_len; i++) {
-        GList* index_keys = g_hash_table_get_keys(search_index);
-        GList* curr = index_keys;
-        while (curr) {
-            char* index_entry = g_hash_table_lookup(search_index, curr->data);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, search_index);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            char* index_entry = (char*)value;
            if (g_str_match_string(processed_terms[i], index_entry, FALSE)) {
-                results = g_list_append(results, curr->data);
+                results = g_list_append(results, key);
            }
-            curr = g_list_next(curr);
        }
-        g_list_free(index_keys);
    }

    return results;
@@ -2848,13 +2847,14 @@ cmd_search_index_all(char* term)
    auto_gcharv gchar** terms = g_str_tokenize_and_fold(term, NULL, NULL);
    int terms_len = g_strv_length(terms);

-    GList* commands = g_hash_table_get_keys(search_index);
-    GList* curr = commands;
-    while (curr) {
-        char* command = curr->data;
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init(&iter, search_index);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        char* command = (char*)key;
+        char* command_index = (char*)value;
        int matches = 0;
        for (int i = 0; i < terms_len; i++) {
-            char* command_index = g_hash_table_lookup(search_index, command);
            if (g_str_match_string(terms[i], command_index, FALSE)) {
                matches++;
            }
@@ -2862,11 +2862,8 @@ cmd_search_index_all(char* term)
        if (matches == terms_len) {
            results = g_list_append(results, command);
        }
-        curr = g_list_next(curr);
    }

-    g_list_free(commands);
-
    return results;
 }

@@ -2989,7 +2986,18 @@ command_docgen(void)
    }

    FILE* toc_fragment = fopen("toc_fragment.html", "w");
+    if (!toc_fragment) {
+        log_error("command_docgen(): unable to open toc_fragment.html for writing: %s", g_strerror(errno));
+        g_list_free(cmds);
+        return;
+    }
    FILE* main_fragment = fopen("main_fragment.html", "w");
+    if (!main_fragment) {
+        log_error("command_docgen(): unable to open main_fragment.html for writing: %s", g_strerror(errno));
+        fclose(toc_fragment);
+        g_list_free(cmds);
+        return;
+    }

    fputs("<ul><li><ul><li>\n", toc_fragment);
    fputs("<hr>\n", main_fragment);
@@ -3094,6 +3102,11 @@ command_mangen(void)
            return;
        }
        FILE* manpage = fopen(filename, "w");
+        if (!manpage) {
+            log_error("command_mangen(): unable to open %s for writing: %s", filename, g_strerror(errno));
+            curr = g_list_next(curr);
+            continue;
+        }

        fprintf(manpage, "%s\n", header);
        fputs(".SH NAME\n", manpage);
--- a/src/command/cmd_funcs.c
+++ b/src/command/cmd_funcs.c
@@ -184,7 +184,7 @@ _string_matches_one_of(const char* what, const char* is, bool is_can_be_null, co
        }
        va_end(ap);
        if (s > 0)
-            cons_show(errmsg);
+            cons_show("%s", errmsg);
    }
    return ret;
 }
@@ -418,7 +418,7 @@ cmd_connect(ProfWin* window, const char* const command, gchar** args)
        auto_char char* err_msg = NULL;
        gboolean res = strtoi_range(port_str, &port, 1, 65535, &err_msg);
        if (!res) {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_show("");
            port = 0;
            options_destroy(options);
@@ -711,7 +711,7 @@ _account_set_port(char* account_name, char* port)
    auto_char char* err_msg = NULL;
    gboolean res = strtoi_range(port, &porti, 1, 65535, &err_msg);
    if (!res) {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
        cons_show("");
    } else {
        accounts_set_port(account_name, porti);
@@ -903,7 +903,7 @@ _account_set_max_sessions(char* account_name, char* max_sessions_raw)
    auto_char char* err_msg = NULL;
    gboolean res = strtoi_range(max_sessions_raw, &max_sessions, 0, INT_MAX, &err_msg);
    if (!res) {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
        cons_show("");
        return TRUE;
    }
@@ -924,7 +924,7 @@ _account_set_presence_priority(char* account_name, char* presence, char* priorit
    auto_char char* err_msg = NULL;
    gboolean res = strtoi_range(priority, &intval, -128, 127, &err_msg);
    if (!res) {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
        return TRUE;
    }

@@ -1580,7 +1580,7 @@ _cmd_list_commands(GList* commands)
    while (curr) {
        gchar* cmd = curr->data;
        if (count == 5) {
-            cons_show(cmds->str);
+            cons_show("%s", cmds->str);
            g_string_free(cmds, TRUE);
            cmds = g_string_new("");
            count = 0;
@@ -1589,7 +1589,7 @@ _cmd_list_commands(GList* commands)
        curr = g_list_next(curr);
        count++;
    }
-    cons_show(cmds->str);
+    cons_show("%s", cmds->str);
    g_string_free(cmds, TRUE);
    g_list_free(curr);

@@ -2407,7 +2407,7 @@ cmd_roster(ProfWin* window, const char* const command, gchar** args)
            }
            return TRUE;
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            return TRUE;
        }

@@ -2467,7 +2467,7 @@ cmd_roster(ProfWin* window, const char* const command, gchar** args)
                    cons_show("Roster contact indent set to: %d", intval);
                    rosterwin_roster();
                } else {
-                    cons_show(err_msg);
+                    cons_show("%s", err_msg);
                }
            }
        } else {
@@ -2501,7 +2501,7 @@ cmd_roster(ProfWin* window, const char* const command, gchar** args)
                    cons_show("Roster resource indent set to: %d", intval);
                    rosterwin_roster();
                } else {
-                    cons_show(err_msg);
+                    cons_show("%s", err_msg);
                }
            }
        } else if (g_strcmp0(args[1], "join") == 0) {
@@ -2527,7 +2527,7 @@ cmd_roster(ProfWin* window, const char* const command, gchar** args)
                    cons_show("Roster presence indent set to: %d", intval);
                    rosterwin_roster();
                } else {
-                    cons_show(err_msg);
+                    cons_show("%s", err_msg);
                }
            }
        } else {
@@ -4371,7 +4371,7 @@ cmd_occupants(ProfWin* window, const char* const command, gchar** args)
                wins_resize_all();
                return TRUE;
            } else {
-                cons_show(err_msg);
+                cons_show("%s", err_msg);
                return TRUE;
            }
        }
@@ -4391,7 +4391,7 @@ cmd_occupants(ProfWin* window, const char* const command, gchar** args)

                occupantswin_occupants_all();
            } else {
-                cons_show(err_msg);
+                cons_show("%s", err_msg);
            }
            return TRUE;
        }
@@ -4970,8 +4970,8 @@ cmd_sendfile(ProfWin* window, const char* const command, gchar** args)
        alt_scheme = OMEMO_AESGCM_URL_SCHEME;
        alt_fragment = _add_omemo_stream(&fd, &fh, &err);
        if (err != NULL) {
-            cons_show_error(err);
-            win_println(window, THEME_ERROR, "-", err);
+            cons_show_error("%s", err);
+            win_println(window, THEME_ERROR, "-", "%s", err);
            goto out;
        }
 #endif
@@ -5836,7 +5836,7 @@ cmd_inpblock(ProfWin* window, const char* const command, gchar** args)
            prefs_set_inpblock(intval);
            inp_nonblocking(FALSE);
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
        }

        return TRUE;
@@ -6063,7 +6063,7 @@ cmd_statusbar(ProfWin* window, const char* const command, gchar** args)
            ui_resize();
            return TRUE;
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_bad_cmd_usage(command);
            return TRUE;
        }
@@ -6094,7 +6094,7 @@ cmd_statusbar(ProfWin* window, const char* const command, gchar** args)
            ui_resize();
            return TRUE;
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_bad_cmd_usage(command);
            return TRUE;
        }
@@ -6254,7 +6254,7 @@ cmd_log(ProfWin* window, const char* const command, gchar** args)
            prefs_set_max_log_size(intval);
            cons_show("Log maximum size set to %d bytes", intval);
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
        }
        return TRUE;
    }
@@ -6304,7 +6304,7 @@ cmd_reconnect(ProfWin* window, const char* const command, gchar** args)
            cons_show("Reconnect interval set to %d seconds.", intval);
        }
    } else {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
        cons_bad_cmd_usage(command);
    }

@@ -6330,7 +6330,7 @@ cmd_autoping(ProfWin* window, const char* const command, gchar** args)
                cons_show("Autoping interval set to %d seconds.", intval);
            }
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_bad_cmd_usage(command);
        }

@@ -6346,7 +6346,7 @@ cmd_autoping(ProfWin* window, const char* const command, gchar** args)
                cons_show("Autoping timeout set to %d seconds.", intval);
            }
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_bad_cmd_usage(command);
        }

@@ -6416,7 +6416,7 @@ cmd_autoaway(ProfWin* window, const char* const command, gchar** args)
                    cons_show("Auto away time set to: %d minutes.", minutesval);
                }
            } else {
-                cons_show(err_msg);
+                cons_show("%s", err_msg);
            }

            return TRUE;
@@ -6439,7 +6439,7 @@ cmd_autoaway(ProfWin* window, const char* const command, gchar** args)
                    }
                }
            } else {
-                cons_show(err_msg);
+                cons_show("%s", err_msg);
            }

            return TRUE;
@@ -6506,7 +6506,7 @@ cmd_priority(ProfWin* window, const char* const command, gchar** args)
        cl_ev_presence_send(last_presence, 0);
        cons_show("Priority set to %d.", intval);
    } else {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
    }

    return TRUE;
@@ -6576,7 +6576,7 @@ cmd_tray(ProfWin* window, const char* const command, gchar** args)
                tray_set_timer(intval);
            }
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
        }

        return TRUE;
@@ -7181,22 +7181,21 @@ cmd_pgp(ProfWin* window, const char* const command, gchar** args)
        }

        cons_show("PGP keys:");
-        GList* keylist = g_hash_table_get_keys(keys);
-        GList* curr = keylist;
-        while (curr) {
-            ProfPGPKey* key = g_hash_table_lookup(keys, curr->data);
-            cons_show("  %s", key->name);
-            cons_show("    ID          : %s", key->id);
-            auto_char char* format_fp = p_gpg_format_fp_str(key->fp);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, keys);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            ProfPGPKey* pgp_key = (ProfPGPKey*)value;
+            cons_show("  %s", pgp_key->name);
+            cons_show("    ID          : %s", pgp_key->id);
+            auto_char char* format_fp = p_gpg_format_fp_str(pgp_key->fp);
            cons_show("    Fingerprint : %s", format_fp);
-            if (key->secret) {
+            if (pgp_key->secret) {
                cons_show("    Type        : PUBLIC, PRIVATE");
            } else {
                cons_show("    Type        : PUBLIC");
            }
-            curr = g_list_next(curr);
        }
-        g_list_free(keylist);
        p_gpg_free_keys(keys);
        return TRUE;
    }
@@ -7237,25 +7236,24 @@ cmd_pgp(ProfWin* window, const char* const command, gchar** args)
            return TRUE;
        }
        GHashTable* pubkeys = p_gpg_pubkeys();
-        GList* jids = g_hash_table_get_keys(pubkeys);
-        if (!jids) {
+        if (!pubkeys || g_hash_table_size(pubkeys) == 0) {
            cons_show("No contacts found with PGP public keys assigned.");
            return TRUE;
        }

        cons_show("Assigned PGP public keys:");
-        GList* curr = jids;
-        while (curr) {
-            char* jid = curr->data;
-            ProfPGPPubKeyId* pubkeyid = g_hash_table_lookup(pubkeys, jid);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, pubkeys);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            char* jid = (char*)key;
+            ProfPGPPubKeyId* pubkeyid = (ProfPGPPubKeyId*)value;
            if (pubkeyid->received) {
                cons_show("  %s: %s (received)", jid, pubkeyid->id);
            } else {
                cons_show("  %s: %s (stored)", jid, pubkeyid->id);
            }
-            curr = g_list_next(curr);
        }
-        g_list_free(jids);
        return TRUE;
    }

@@ -7468,22 +7466,21 @@ cmd_ox(ProfWin* window, const char* const command, gchar** args)
        }

        cons_show("OpenPGP keys:");
-        GList* keylist = g_hash_table_get_keys(keys);
-        GList* curr = keylist;
-        while (curr) {
-            ProfPGPKey* key = g_hash_table_lookup(keys, curr->data);
-            cons_show("  %s", key->name);
-            cons_show("    ID          : %s", key->id);
-            auto_char char* format_fp = p_gpg_format_fp_str(key->fp);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, keys);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            ProfPGPKey* pgp_key = (ProfPGPKey*)value;
+            cons_show("  %s", pgp_key->name);
+            cons_show("    ID          : %s", pgp_key->id);
+            auto_char char* format_fp = p_gpg_format_fp_str(pgp_key->fp);
            cons_show("    Fingerprint : %s", format_fp);
-            if (key->secret) {
+            if (pgp_key->secret) {
                cons_show("    Type        : PUBLIC, PRIVATE");
            } else {
                cons_show("    Type        : PUBLIC");
            }
-            curr = g_list_next(curr);
        }
-        g_list_free(keylist);
        p_gpg_free_keys(keys);
        return TRUE;
    }
@@ -7491,8 +7488,8 @@ cmd_ox(ProfWin* window, const char* const command, gchar** args)
    else if (g_strcmp0(args[0], "contacts") == 0) {
        GHashTable* keys = ox_gpg_public_keys();
        cons_show("OpenPGP keys:");
-        GList* keylist = g_hash_table_get_keys(keys);
-        GList* curr = keylist;
+        GHashTableIter iter;
+        gpointer key, value;

        GSList* roster_list = NULL;
        jabber_conn_status_t conn_status = connection_get_status();
@@ -7502,15 +7499,16 @@ cmd_ox(ProfWin* window, const char* const command, gchar** args)
            roster_list = roster_get_contacts(ROSTER_ORD_NAME);
        }

-        while (curr) {
-            ProfPGPKey* key = g_hash_table_lookup(keys, curr->data);
+        g_hash_table_iter_init(&iter, keys);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            ProfPGPKey* pgp_key = (ProfPGPKey*)value;
            PContact contact = NULL;
            if (roster_list) {
                GSList* curr_c = roster_list;
                while (!contact && curr_c) {
                    contact = curr_c->data;
                    auto_gchar gchar* xmppuri = g_strdup_printf("xmpp:%s", p_contact_barejid(contact));
-                    if (g_strcmp0(key->name, xmppuri)) {
+                    if (g_strcmp0(pgp_key->name, xmppuri)) {
                        contact = NULL;
                    }
                    curr_c = g_slist_next(curr_c);
@@ -7518,11 +7516,10 @@ cmd_ox(ProfWin* window, const char* const command, gchar** args)
            }

            if (contact) {
-                cons_show("%s - %s", key->fp, key->name);
+                cons_show("%s - %s", pgp_key->fp, pgp_key->name);
            } else {
-                cons_show("%s - %s (not in roster)", key->fp, key->name);
+                cons_show("%s - %s (not in roster)", pgp_key->fp, pgp_key->name);
            }
-            curr = g_list_next(curr);
        }

    } else if (g_strcmp0(args[0], "start") == 0) {
@@ -9612,7 +9609,7 @@ cmd_register(ProfWin* window, const char* const command, gchar** args)
        auto_char char* err_msg = NULL;
        gboolean res = strtoi_range(port_str, &port, 1, 65535, &err_msg);
        if (!res) {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
            cons_show("");
            port = 0;
            options_destroy(options);
@@ -9682,7 +9679,7 @@ cmd_strophe(ProfWin* window, const char* const command, gchar** args)
            prefs_set_string(PREF_STROPHE_VERBOSITY, args[1]);
            return TRUE;
        } else {
-            cons_show(err_msg);
+            cons_show("%s", err_msg);
        }
    } else if (g_strcmp0(args[0], "sm") == 0) {
        if (g_strcmp0(args[1], "no-resend") == 0) {
--- a/src/common.c
+++ b/src/common.c
@@ -143,7 +143,7 @@ auto_close_gfd(gint* fd)
        return;

    if (close(*fd) == EOF)
-        log_error(g_strerror(errno));
+        log_error("%s", g_strerror(errno));
 }

 /**
@@ -158,7 +158,7 @@ auto_close_FILE(FILE** fd)
        return;

    if (fclose(*fd) == EOF)
-        log_error(g_strerror(errno));
+        log_error("%s", g_strerror(errno));
 }

 static gboolean
--- a/src/database.c
+++ b/src/database.c
@@ -65,6 +65,38 @@ static gboolean _check_available_space_for_db_migration(char* path_to_db);

 static const int latest_version = 2;

+// Helper: close DB handle (if any), warn on busy, and shutdown SQLite
+static void
+_db_teardown(const char* ctx)
+{
+    if (g_chatlog_database) {
+        int rc = sqlite3_close_v2(g_chatlog_database);
+        if (rc != SQLITE_OK) {
+            log_warning("sqlite3_close_v2 in %s returned %d; database may still have active statements.",
+                        ctx ? ctx : "db_teardown", rc);
+        }
+        g_chatlog_database = NULL;
+    }
+    // Safe to call unconditionally; no-op if not initialized.
+    // See: https://www.sqlite.org/c3ref/initialize.html
+    sqlite3_shutdown();
+}
+
+// Helper: prepare a statement and log a contextual error on failure
+static gboolean
+_db_prepare_ctx(const char* query, sqlite3_stmt** stmt, const char* ctx)
+{
+    int rc = sqlite3_prepare_v2(g_chatlog_database, query, -1, stmt, NULL);
+    if (rc != SQLITE_OK) {
+        log_error("SQLite error in %s: (error code: %d) %s",
+                  ctx ? ctx : "sqlite3_prepare_v2",
+                  rc,
+                  sqlite3_errmsg(g_chatlog_database));
+        return FALSE;
+    }
+    return TRUE;
+}
+
 static char*
 _db_strdup(const char* str)
 {
@@ -98,17 +130,19 @@ log_database_init(ProfAccount* account)

    auto_char char* filename = _get_db_filename(account);
    if (!filename) {
+        sqlite3_shutdown();
        return FALSE;
    }

    ret = sqlite3_open(filename, &g_chatlog_database);
    if (ret != SQLITE_OK) {
-        const char* err_msg = sqlite3_errmsg(g_chatlog_database);
+        const char* err_msg = g_chatlog_database ? sqlite3_errmsg(g_chatlog_database) : "(no handle)";
        log_error("Error opening SQLite database: %s", err_msg);
+        _db_teardown("log_database_init(open)");
        return FALSE;
    }

-    char* err_msg;
+    char* err_msg = NULL;

    int db_version = _get_db_version();
    if (db_version == latest_version) {
@@ -216,6 +250,7 @@ out:
    } else {
        log_error("Unknown SQLite error in log_database_init().");
    }
+    _db_teardown("log_database_init(out)");
    return FALSE;
 }

@@ -223,11 +258,7 @@ void
 log_database_close(void)
 {
    log_debug("log_database_close() called");
-    if (g_chatlog_database) {
-        sqlite3_close(g_chatlog_database);
-        sqlite3_shutdown();
-        g_chatlog_database = NULL;
-    }
+    _db_teardown("log_database_close");
 }

 void
@@ -281,8 +312,15 @@ log_database_get_limits_info(const gchar* const contact_barejid, gboolean is_las
 {
    sqlite3_stmt* stmt = NULL;
    const Jid* myjid = connection_get_jid();
-    if (!myjid->str)
-        return NULL;
+    // Always return a valid ProfMessage to avoid NULL dereferences in callers
+    ProfMessage* msg = message_init();
+    if (!myjid || !myjid->str) {
+        // If caller requested the last message and we have no context, fall back to now
+        if (is_last) {
+            msg->timestamp = g_date_time_new_now_utc();
+        }
+        return msg;
+    }

    const char* order = is_last ? "DESC" : "ASC";
    auto_sqlite char* query = sqlite3_mprintf("SELECT `archive_id`, `timestamp` FROM `ChatLogs` WHERE "
@@ -293,17 +331,19 @@ log_database_get_limits_info(const gchar* const contact_barejid, gboolean is_las

    if (!query) {
        log_error("Could not allocate memory for SQL query in log_database_get_limits_info()");
-        return NULL;
+        if (is_last) {
+            msg->timestamp = g_date_time_new_now_utc();
+        }
+        return msg;
    }

-    int rc = sqlite3_prepare_v2(g_chatlog_database, query, -1, &stmt, NULL);
-    if (rc != SQLITE_OK) {
-        log_error("Unknown SQLite error in log_database_get_last_info().");
-        return NULL;
+    if (!_db_prepare_ctx(query, &stmt, "log_database_get_limits_info()")) {
+        if (is_last) {
+            msg->timestamp = g_date_time_new_now_utc();
+        }
+        return msg;
    }

-    ProfMessage* msg = message_init();
-
    if (sqlite3_step(stmt) == SQLITE_ROW) {
        char* archive_id = (char*)sqlite3_column_text(stmt, 0);
        char* date = (char*)sqlite3_column_text(stmt, 1);
@@ -313,6 +353,11 @@ log_database_get_limits_info(const gchar* const contact_barejid, gboolean is_las
    }
    sqlite3_finalize(stmt);

+    // If nothing was found and caller expects the last message, provide a sane default
+    if (!msg->timestamp && is_last) {
+        msg->timestamp = g_date_time_new_now_utc();
+    }
+
    return msg;
 }

@@ -357,9 +402,7 @@ log_database_get_previous_chat(const gchar* const contact_barejid, const gchar*
        return DB_RESPONSE_ERROR;
    }

-    int rc = sqlite3_prepare_v2(g_chatlog_database, query, -1, &stmt, NULL);
-    if (rc != SQLITE_OK) {
-        log_error("SQLite error in log_database_get_previous_chat(): (error code: %d) %s", rc, sqlite3_errmsg(g_chatlog_database));
+    if (!_db_prepare_ctx(query, &stmt, "log_database_get_previous_chat()")) {
        return DB_RESPONSE_ERROR;
    }

@@ -503,9 +546,7 @@ _add_to_db(ProfMessage* message, char* type, const Jid* const from_jid, const Ji
        }

        sqlite3_stmt* lmc_stmt = NULL;
-
-        if (SQLITE_OK != sqlite3_prepare_v2(g_chatlog_database, replace_check_query, -1, &lmc_stmt, NULL)) {
-            log_error("SQLite error in _add_to_db() on selecting original message: %s", sqlite3_errmsg(g_chatlog_database));
+        if (!_db_prepare_ctx(replace_check_query, &lmc_stmt, "_add_to_db(replace_check)")) {
            return;
        }

@@ -542,8 +583,7 @@ _add_to_db(ProfMessage* message, char* type, const Jid* const from_jid, const Ji
        }

        sqlite3_stmt* stmt;
-
-        if (SQLITE_OK == sqlite3_prepare_v2(g_chatlog_database, duplicate_check_query, -1, &stmt, NULL)) {
+        if (_db_prepare_ctx(duplicate_check_query, &stmt, "_add_to_db(duplicate_check)")) {
            if (sqlite3_step(stmt) == SQLITE_ROW) {
                log_error("Duplicate stanza-id found for the message. stanza_id: %s; archive_id: %s; sender: %s; content: %s", message->id, message->stanzaid, from_jid->barejid, message->plain);
                cons_show_error("Got a message with duplicate (server-generated) stanza-id from %s.", from_jid->fulljid);
@@ -599,8 +639,7 @@ _get_db_version(void)
    int current_version = -1;
    const char* query = "SELECT `version` FROM `DbVersion` LIMIT 1";
    sqlite3_stmt* statement;
-
-    if (sqlite3_prepare_v2(g_chatlog_database, query, -1, &statement, NULL) == SQLITE_OK) {
+    if (_db_prepare_ctx(query, &statement, "_get_db_version()")) {
        if (sqlite3_step(statement) == SQLITE_ROW) {
            current_version = sqlite3_column_int(statement, 0);
        }
--- a/src/omemo/omemo.c
+++ b/src/omemo/omemo.c
@@ -532,11 +532,13 @@ omemo_set_device_list(const char* const from, GList* device_list)
                for (device_id = device_list; device_id != NULL; device_id = device_id->next) {
                    GHashTable* known_identities = g_hash_table_lookup(omemo_ctx.known_devices, jid->barejid);
                    if (known_identities) {
-                        GList* fp = NULL;
-                        for (fp = g_hash_table_get_keys(known_identities); fp != NULL; fp = fp->next) {
-                            if (device_id->data == g_hash_table_lookup(known_identities, fp->data)) {
-                                cons_show("OMEMO: Adding firstusage trust for %s device %d - Fingerprint %s", jid->barejid, device_id->data, omemo_format_fingerprint(fp->data));
-                                omemo_trust(jid->barejid, omemo_format_fingerprint(fp->data));
+                        GHashTableIter iter;
+                        gpointer key, value;
+                        g_hash_table_iter_init(&iter, known_identities);
+                        while (g_hash_table_iter_next(&iter, &key, &value)) {
+                            if (device_id->data == value) {
+                                cons_show("OMEMO: Adding firstusage trust for %s device %d - Fingerprint %s", jid->barejid, device_id->data, omemo_format_fingerprint(key));
+                                omemo_trust(jid->barejid, omemo_format_fingerprint(key));
                            }
                        }
                    }
--- a/src/pgp/gpg.c
+++ b/src/pgp/gpg.c
@@ -345,14 +345,13 @@ p_gpg_list_keys(void)

    // TODO: move autocomplete in other place
    autocomplete_clear(key_ac);
-    GList* ids = g_hash_table_get_keys(result);
-    GList* curr = ids;
-    while (curr) {
-        ProfPGPKey* key = g_hash_table_lookup(result, curr->data);
-        autocomplete_add(key_ac, key->id);
-        curr = curr->next;
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init(&iter, result);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        ProfPGPKey* pgp_key = (ProfPGPKey*)value;
+        autocomplete_add(key_ac, pgp_key->id);
    }
-    g_list_free(ids);

    return result;
 }
--- a/src/plugins/autocompleters.c
+++ b/src/plugins/autocompleters.c
@@ -141,18 +141,16 @@ autocompleters_complete(const char* const input, gboolean previous)
    while (curr_hash) {
        GHashTable* key_to_ac = curr_hash->data;

-        GList* keys = g_hash_table_get_keys(key_to_ac);
-        GList* curr = keys;
-        while (curr) {
-            result = autocomplete_param_with_ac(input, curr->data, g_hash_table_lookup(key_to_ac, curr->data), TRUE, previous);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, key_to_ac);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            result = autocomplete_param_with_ac(input, key, value, TRUE, previous);
            if (result) {
                g_list_free(ac_hashes);
-                g_list_free(keys);
                return result;
            }
-            curr = g_list_next(curr);
        }
-        g_list_free(keys);

        curr_hash = g_list_next(curr_hash);
    }
@@ -162,22 +160,19 @@ autocompleters_complete(const char* const input, gboolean previous)
    curr_hash = filepath_hashes;
    while (curr_hash) {
        GHashTable* prefixes_hash = curr_hash->data;
-        GList* prefixes = g_hash_table_get_keys(prefixes_hash);
-        GList* curr_prefix = prefixes;
-        while (curr_prefix) {
-            char* prefix = curr_prefix->data;
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, prefixes_hash);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            char* prefix = (char*)key;
            if (g_str_has_prefix(input, prefix)) {
                result = cmd_ac_complete_filepath(input, prefix, previous);
                if (result) {
                    g_list_free(filepath_hashes);
-                    g_list_free(prefixes);
                    return result;
                }
            }
-
-            curr_prefix = g_list_next(curr_prefix);
        }
-        g_list_free(prefixes);

        curr_hash = g_list_next(curr_hash);
    }
--- a/src/plugins/callbacks.c
+++ b/src/plugins/callbacks.c
@@ -149,15 +149,14 @@ callbacks_remove(const char* const plugin_name)
 {
    GHashTable* command_hash = g_hash_table_lookup(p_commands, plugin_name);
    if (command_hash) {
-        GList* commands = g_hash_table_get_keys(command_hash);
-        GList* curr = commands;
-        while (curr) {
-            char* command = curr->data;
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, command_hash);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            char* command = (char*)key;
            cmd_ac_remove(command);
            cmd_ac_remove_help(&command[1]);
-            curr = g_list_next(curr);
        }
-        g_list_free(commands);
    }

    g_hash_table_remove(p_commands, plugin_name);
@@ -165,13 +164,12 @@ callbacks_remove(const char* const plugin_name)

    GHashTable* tag_to_win_cb_hash = g_hash_table_lookup(p_window_callbacks, plugin_name);
    if (tag_to_win_cb_hash) {
-        GList* tags = g_hash_table_get_keys(tag_to_win_cb_hash);
-        GList* curr = tags;
-        while (curr) {
-            wins_close_plugin(curr->data);
-            curr = g_list_next(curr);
+        GHashTableIter iter;
+        gpointer key, value;
+        g_hash_table_iter_init(&iter, tag_to_win_cb_hash);
+        while (g_hash_table_iter_next(&iter, &key, &value)) {
+            wins_close_plugin(key);
        }
-        g_list_free(tags);
    }

    g_hash_table_remove(p_window_callbacks, plugin_name);
--- a/src/plugins/disco.c
+++ b/src/plugins/disco.c
@@ -107,10 +107,11 @@ disco_remove_features(const char* plugin_name)
        return;
    }

-    GList* plugin_feature_list = g_hash_table_get_keys(plugin_features_set);
-    GList* curr = plugin_feature_list;
-    while (curr) {
-        char* feature = curr->data;
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init(&iter, plugin_features_set);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        char* feature = (char*)key;
        if (g_hash_table_contains(features, feature)) {
            void* refcountp = g_hash_table_lookup(features, feature);
            int refcount = GPOINTER_TO_INT(refcountp);
@@ -121,10 +122,7 @@ disco_remove_features(const char* plugin_name)
                g_hash_table_replace(features, strdup(feature), GINT_TO_POINTER(refcount));
            }
        }
-
-        curr = g_list_next(curr);
    }
-    g_list_free(plugin_feature_list);
 }

 GList*
--- a/src/plugins/python_plugins.c
+++ b/src/plugins/python_plugins.c
@@ -887,8 +887,8 @@ _python_undefined_error(ProfPlugin* plugin, char* hook, char* type)
    g_string_append(err_msg, hook);
    g_string_append(err_msg, "(): return value undefined, expected ");
    g_string_append(err_msg, type);
-    log_error(err_msg->str);
-    cons_show_error(err_msg->str);
+    log_error("%s", err_msg->str);
+    cons_show_error("%s", err_msg->str);
    g_string_free(err_msg, TRUE);
 }

@@ -901,8 +901,8 @@ _python_type_error(ProfPlugin* plugin, char* hook, char* type)
    g_string_append(err_msg, hook);
    g_string_append(err_msg, "(): incorrect return type, expected ");
    g_string_append(err_msg, type);
-    log_error(err_msg->str);
-    cons_show_error(err_msg->str);
+    log_error("%s", err_msg->str);
+    cons_show_error("%s", err_msg->str);
    g_string_free(err_msg, TRUE);
 }

--- a/src/profanity.c
+++ b/src/profanity.c
@@ -135,7 +135,7 @@ prof_run(gchar* log_level, gchar* account_name, gchar* config_file, gchar* log_f
                         */
                        min_runtime += waittime;
                    } else {
-                        log_error(err_msg);
+                        log_error("%s", err_msg);
                        g_free(err_msg);
                        commands = NULL;
                    }
@@ -245,7 +245,7 @@ _init(char* log_level, char* config_file, char* log_file, char* theme_name)
    if (prof_log_level == PROF_LEVEL_DEBUG) {
        ProfWin* console = wins_get_console();
        win_println(console, THEME_DEFAULT, "-", "Debug mode enabled! Logging to: ");
-        win_println(console, THEME_DEFAULT, "-", get_log_file_location());
+        win_println(console, THEME_DEFAULT, "-", "%s", get_log_file_location());
    }
    session_init();
    cmd_init();
--- a/src/tools/http_upload.c
+++ b/src/tools/http_upload.c
@@ -311,7 +311,7 @@ http_file_put(void* userdata)
            }
            win_update_entry_message(upload->window, upload->put_url, err_msg);
        }
-        cons_show_error(err_msg);
+        cons_show_error("%s", err_msg);
    } else {
        if (!upload->cancel) {
            auto_gchar gchar* status_msg = g_strdup_printf("Uploading '%s': 100%%", upload->filename);
@@ -327,7 +327,7 @@ http_file_put(void* userdata)
                if (!fail_msg) {
                    fail_msg = g_strdup(FALLBACK_MSG);
                }
-                cons_show_error(fail_msg);
+                cons_show_error("%s", fail_msg);
            } else {
                switch (upload->window->type) {
                case WIN_CHAT:
--- a/src/ui/buffer.c
+++ b/src/ui/buffer.c
@@ -140,6 +140,10 @@ void
 buffer_remove_entry(ProfBuff buffer, int entry)
 {
    GSList* node = g_slist_nth(buffer->entries, entry);
+    if (node == NULL) {
+        // Index out of range; nothing to remove
+        return;
+    }
    ProfBuffEntry* e = node->data;
    buffer->lines -= e->_lines;
    _free_entry(e);
@@ -168,6 +172,9 @@ ProfBuffEntry*
 buffer_get_entry(ProfBuff buffer, int entry)
 {
    GSList* node = g_slist_nth(buffer->entries, entry);
+    if (node == NULL) {
+        return NULL;
+    }
    return node->data;
 }

@@ -189,6 +196,7 @@ buffer_get_entry_by_id(ProfBuff buffer, const char* const id)
 static ProfBuffEntry*
 _create_entry(const char* show_char, int pad_indent, GDateTime* time, int flags, theme_item_t theme_item, const char* const display_from, const char* const from_jid, const char* const message, DeliveryReceipt* receipt, const char* const id, int y_start_pos, int y_end_pos)
 {
+    assert(time != NULL);
    ProfBuffEntry* e = malloc(sizeof(struct prof_buff_entry_t));
    e->show_char = STRDUP_OR_NULL(show_char);
    e->pad_indent = pad_indent;
--- a/src/ui/chatwin.c
+++ b/src/ui/chatwin.c
@@ -592,8 +592,11 @@ chatwin_db_history(ProfChatWin* chatwin, const gchar* start_time, const gchar* e
 {
    auto_gchar gchar* _end_time = NULL;
    if (!end_time && buffer_size(((ProfWin*)chatwin)->layout->buffer) > 0) {
-        _end_time = g_date_time_format_iso8601(buffer_get_entry(((ProfWin*)chatwin)->layout->buffer, 0)->time);
-        end_time = _end_time;
+        ProfBuffEntry* first = buffer_get_entry(((ProfWin*)chatwin)->layout->buffer, 0);
+        if (first && first->time) {
+            _end_time = g_date_time_format_iso8601(first->time);
+            end_time = _end_time;
+        }
    }

    GSList* history = NULL;
--- a/src/ui/console.c
+++ b/src/ui/console.c
@@ -152,7 +152,7 @@ cons_bad_cmd_usage(const char* const cmd)
    g_string_printf(msg, "Invalid usage, see '/help %s' for details.", &cmd[1]);

    cons_show("");
-    cons_show(msg->str);
+    cons_show("%s", msg->str);

    g_string_free(msg, TRUE);
 }
@@ -773,7 +773,7 @@ cons_show_disco_info(const char* jid, GSList* identities, GSList* features)
            if (identity->category) {
                identity_str = g_string_append(identity_str, identity->category);
            }
-            cons_show(identity_str->str);
+            cons_show("%s", identity_str->str);
            g_string_free(identity_str, TRUE);
            identities = g_slist_next(identities);
        }
@@ -938,7 +938,7 @@ cons_show_account_list(gchar** accounts)
                theme_item_t presence_colour = theme_main_presence_attrs(string_from_resource_presence(presence));
                win_println(console, presence_colour, "-", "%s", accounts[i]);
            } else {
-                cons_show(accounts[i]);
+                cons_show("%s", accounts[i]);
            }
        }
        cons_show("");
@@ -1019,7 +1019,7 @@ cons_show_account(ProfAccount* account)
            }
            curr = curr->next;
        }
-        cons_show(manual->str);
+        cons_show("%s", manual->str);
        g_string_free(manual, TRUE);
    }
    if (g_list_length(account->otr_opportunistic) > 0) {
@@ -1032,7 +1032,7 @@ cons_show_account(ProfAccount* account)
            }
            curr = curr->next;
        }
-        cons_show(opportunistic->str);
+        cons_show("%s", opportunistic->str);
        g_string_free(opportunistic, TRUE);
    }
    if (g_list_length(account->otr_always) > 0) {
@@ -1045,7 +1045,7 @@ cons_show_account(ProfAccount* account)
            }
            curr = curr->next;
        }
-        cons_show(always->str);
+        cons_show("%s", always->str);
        g_string_free(always, TRUE);
    }

@@ -2297,7 +2297,7 @@ cons_show_themes(GSList* themes)
    } else {
        cons_show("Available themes:");
        while (themes) {
-            cons_show(themes->data);
+            cons_show("%s", themes->data);
            themes = g_slist_next(themes);
        }
    }
@@ -2315,7 +2315,7 @@ cons_show_scripts(GSList* scripts)
    } else {
        cons_show("Scripts:");
        while (scripts) {
-            cons_show(scripts->data);
+            cons_show("%s", scripts->data);
            scripts = g_slist_next(scripts);
        }
    }
--- a/src/ui/core.c
+++ b/src/ui/core.c
@@ -445,7 +445,7 @@ ui_handle_error(const char* const err_msg)
    GString* msg = g_string_new("");
    g_string_printf(msg, "Error %s", err_msg);

-    cons_show_error(msg->str);
+    cons_show_error("%s", msg->str);

    g_string_free(msg, TRUE);
 }
@@ -461,7 +461,7 @@ ui_invalid_command_usage(const char* const cmd, void (*setting_func)(void))
        (*setting_func)();
    } else {
        cons_show("");
-        cons_show(msg->str);
+        cons_show("%s", msg->str);
        ProfWin* current = wins_get_current();
        if (current->type == WIN_CHAT) {
            win_println(current, THEME_DEFAULT, "-", "%s", msg->str);
--- a/src/ui/inputwin.c
+++ b/src/ui/inputwin.c
@@ -144,10 +144,14 @@ void
 create_input_window(void)
 {
    /* MB_CUR_MAX is evaluated at runtime depending on the current
-     * locale, therefore we check that our own version is big enough
-     * and bail out if it isn't.
+     * locale; ensure our own compiled-in maximum is sufficient.
+     * Fail gracefully instead of aborting in production.
     */
-    assert(MB_CUR_MAX <= PROF_MB_CUR_MAX);
+    if (MB_CUR_MAX > PROF_MB_CUR_MAX) {
+        log_error("Locale MB_CUR_MAX (%zu) exceeds compiled limit (%d)", (size_t)MB_CUR_MAX, PROF_MB_CUR_MAX);
+        cons_show_error("Unsupported locale. Before running, execute in terminal: export LC_ALL=C.UTF-8");
+        return;
+    }
 #ifdef NCURSES_REENTRANT
    set_escdelay(25);
 #else
@@ -163,6 +167,10 @@ create_input_window(void)
    rl_callback_handler_install(NULL, _inp_rl_linehandler);

    inp_win = newpad(1, INP_WIN_MAX);
+    if (!inp_win) {
+        log_error("Failed to allocate input window pad");
+        return;
+    }
    wbkgd(inp_win, theme_attrs(THEME_INPUT_TEXT));
    keypad(inp_win, TRUE);
    wmove(inp_win, 0, 0);
@@ -238,6 +246,9 @@ inp_readline(void)
 void
 inp_win_resize(void)
 {
+    if (!inp_win) {
+        return;
+    }
    int col = getcurx(inp_win);
    int wcols = getmaxx(stdscr);

@@ -285,8 +296,10 @@ void
 inp_close(void)
 {
    rl_callback_handler_remove();
-    delwin(inp_win);
-    inp_win = NULL;
+    if (inp_win) {
+        delwin(inp_win);
+        inp_win = NULL;
+    }
    fclose(discard);
    discard = NULL;
 }
@@ -294,6 +307,9 @@ inp_close(void)
 char*
 inp_get_line(void)
 {
+    if (!inp_win) {
+        return NULL;
+    }
    werase(inp_win);
    wmove(inp_win, 0, 0);
    _inp_win_update_virtual();
@@ -318,6 +334,9 @@ inp_set_line(const char* const new_line)
 char*
 inp_get_password(void)
 {
+    if (!inp_win) {
+        return NULL;
+    }
    werase(inp_win);
    wmove(inp_win, 0, 0);
    _inp_win_update_virtual();
--- a/src/ui/statusbar.c
+++ b/src/ui/statusbar.c
@@ -40,6 +40,8 @@
 #include <string.h>
 #include <stdlib.h>

+#include "log.h"
+
 #ifdef HAVE_NCURSESW_NCURSES_H
 #include <ncursesw/ncurses.h>
 #elif HAVE_NCURSES_H
@@ -111,16 +113,24 @@ status_bar_init(void)

    int row = screen_statusbar_row();
    int cols = getmaxx(stdscr);
+    if (cols <= 0) {
+        log_warning("status_bar_init: invalid cols %d, defaulting to 1", cols);
+        cols = 1;
+    }
    statusbar_win = newwin(1, cols, row, 0);

-    status_bar_draw();
+    if (statusbar_win) {
+        status_bar_draw();
+    }
 }

 void
 status_bar_close(void)
 {
-    delwin(statusbar_win);
-    statusbar_win = NULL;
+    if (statusbar_win) {
+        delwin(statusbar_win);
+        statusbar_win = NULL;
+    }
    if (statusbar) {
        if (statusbar->time) {
            g_free(statusbar->time);
@@ -145,7 +155,14 @@ status_bar_close(void)
 void
 status_bar_resize(void)
 {
+    if (!statusbar_win) {
+        return;
+    }
    int cols = getmaxx(stdscr);
+    if (cols <= 0) {
+        log_warning("status_bar_resize: invalid cols %d, defaulting to 1", cols);
+        cols = 1;
+    }
    werase(statusbar_win);
    int row = screen_statusbar_row();
    wresize(statusbar_win, 1, cols);
@@ -285,6 +302,9 @@ status_bar_clear_fulljid(void)
 void
 status_bar_draw(void)
 {
+    if (!statusbar_win) {
+        return;
+    }
    werase(statusbar_win);
    wbkgd(statusbar_win, theme_attrs(THEME_STATUS_TEXT));

@@ -674,8 +694,13 @@ _display_name(StatusBarTab* tab)
        fullname = g_strconcat(mucwin_title, " conf", NULL);
    } else if (tab->window_type == WIN_PRIVATE) {
        auto_jid Jid* jid = jid_create(tab->identifier);
-        auto_gchar gchar* mucwin_title = mucwin_generate_title(jid->barejid, PREF_STATUSBAR_ROOM_TITLE);
-        fullname = g_strconcat(mucwin_title, "/", jid->resourcepart, NULL);
+        if (jid) {
+            auto_gchar gchar* mucwin_title = mucwin_generate_title(jid->barejid, PREF_STATUSBAR_ROOM_TITLE);
+            fullname = g_strconcat(mucwin_title, "/", jid->resourcepart, NULL);
+        } else {
+            // Fallback: use identifier directly if JID parsing failed
+            fullname = strdup(tab->identifier);
+        }
    } else {
        fullname = strdup("window");
    }
--- a/src/ui/titlebar.c
+++ b/src/ui/titlebar.c
@@ -73,9 +73,16 @@ void
 create_title_bar(void)
 {
    int cols = getmaxx(stdscr);
+    if (cols <= 0) {
+        cols = 1;
+    }

    int row = screen_titlebar_row();
    win = newwin(1, cols, row, 0);
+    if (!win) {
+        // Failed to create title bar window; skip initialization to avoid NULL deref
+        return;
+    }
    wbkgd(win, theme_attrs(THEME_TITLE_TEXT));
    title_bar_console();
    title_bar_set_presence(CONTACT_OFFLINE);
@@ -88,13 +95,18 @@ create_title_bar(void)
 void
 free_title_bar(void)
 {
-    delwin(win);
-    win = NULL;
+    if (win) {
+        delwin(win);
+        win = NULL;
+    }
 }

 void
 title_bar_update_virtual(void)
 {
+    if (!win) {
+        return;
+    }
    ProfWin* window = wins_get_current();
    if (window->type != WIN_CONSOLE) {
        if (typing_elapsed) {
@@ -114,7 +126,13 @@ title_bar_update_virtual(void)
 void
 title_bar_resize(void)
 {
+    if (!win) {
+        return;
+    }
    int cols = getmaxx(stdscr);
+    if (cols <= 0) {
+        cols = 1;
+    }

    werase(win);

@@ -131,6 +149,9 @@ title_bar_resize(void)
 void
 title_bar_console(void)
 {
+    if (!win) {
+        return;
+    }
    werase(win);
    if (typing_elapsed) {
        g_timer_destroy(typing_elapsed);
@@ -192,6 +213,9 @@ title_bar_set_typing(gboolean is_typing)
 static void
 _title_bar_draw(void)
 {
+    if (!win) {
+        return;
+    }
    int pos;
    int maxrightpos;
    ProfWin* current = wins_get_current();
--- a/src/ui/window.c
+++ b/src/ui/window.c
@@ -75,12 +75,22 @@ static void _win_print_internal(ProfWin* window, const char* show_char, int pad_
                                int flags, theme_item_t theme_item, const char* const from, const char* const message, DeliveryReceipt* receipt);
 static void _win_print_wrapped(WINDOW* win, const char* const message, size_t indent, int pad_indent);

+// Helper: clamp a subwindow width to a sane range [1, cols-1] if possible
+static int
+_check_subwin_width(int cols, int width)
+{
+    return cols <= 1 ? 1 : CLAMP(width, 1, cols - 1);
+}
+
 int
 win_roster_cols(void)
 {
    int roster_win_percent = prefs_get_roster_size();
    int cols = getmaxx(stdscr);
-    return CEILING((((double)cols) / 100) * roster_win_percent);
+    int width = CEILING((((double)cols) / 100) * roster_win_percent);
+    // Clamp to a sane range to avoid zero/full-width pads
+    width = _check_subwin_width(cols, width);
+    return width;
 }

 int
@@ -88,7 +98,10 @@ win_occpuants_cols(void)
 {
    int occupants_win_percent = prefs_get_occupants_size();
    int cols = getmaxx(stdscr);
-    return CEILING((((double)cols) / 100) * occupants_win_percent);
+    int width = CEILING((((double)cols) / 100) * occupants_win_percent);
+    // Clamp to a sane range to avoid zero/full-width pads
+    width = _check_subwin_width(cols, width);
+    return width;
 }

 static ProfLayout*
@@ -144,6 +157,7 @@ win_create_console(void)
 ProfWin*
 win_create_chat(const char* const barejid)
 {
+    assert(barejid != NULL);
    ProfChatWin* new_win = malloc(sizeof(ProfChatWin));
    new_win->window.type = WIN_CHAT;
    new_win->window.scroll_state = WIN_SCROLL_INNER;
@@ -175,6 +189,7 @@ win_create_chat(const char* const barejid)
 ProfWin*
 win_create_muc(const char* const roomjid)
 {
+    assert(roomjid != NULL);
    ProfMucWin* new_win = malloc(sizeof(ProfMucWin));
    int cols = getmaxx(stdscr);

@@ -233,6 +248,8 @@ win_create_muc(const char* const roomjid)
 ProfWin*
 win_create_config(const char* const roomjid, DataForm* form, ProfConfWinCallback submit, ProfConfWinCallback cancel, const void* userdata)
 {
+    assert(roomjid != NULL);
+    assert(form != NULL);
    ProfConfWin* new_win = malloc(sizeof(ProfConfWin));
    new_win->window.type = WIN_CONFIG;
    new_win->window.scroll_state = WIN_SCROLL_INNER;
@@ -251,6 +268,7 @@ win_create_config(const char* const roomjid, DataForm* form, ProfConfWinCallback
 ProfWin*
 win_create_private(const char* const fulljid)
 {
+    assert(fulljid != NULL);
    ProfPrivateWin* new_win = malloc(sizeof(ProfPrivateWin));
    new_win->window.type = WIN_PRIVATE;
    new_win->window.scroll_state = WIN_SCROLL_INNER;
@@ -281,6 +299,8 @@ win_create_xmlconsole(void)
 ProfWin*
 win_create_plugin(const char* const plugin_name, const char* const tag)
 {
+    assert(plugin_name != NULL);
+    assert(tag != NULL);
    ProfPluginWin* new_win = malloc(sizeof(ProfPluginWin));
    new_win->window.type = WIN_PLUGIN;
    new_win->window.scroll_state = WIN_SCROLL_INNER;
@@ -297,6 +317,7 @@ win_create_plugin(const char* const plugin_name, const char* const tag)
 ProfWin*
 win_create_vcard(vCard* vcard)
 {
+    assert(vcard != NULL);
    ProfVcardWin* new_win = malloc(sizeof(ProfVcardWin));
    new_win->window.type = WIN_VCARD;
    new_win->window.scroll_state = WIN_SCROLL_INNER;
@@ -348,7 +369,7 @@ win_get_title(ProfWin* window)
        const ProfConfWin* confwin = (ProfConfWin*)window;
        assert(confwin->memcheck == PROFCONFWIN_MEMCHECK);
        auto_gchar gchar* mucwin_title = mucwin_generate_title(confwin->roomjid, PREF_TITLEBAR_MUC_TITLE);
-        if (confwin->form->modified) {
+        if (confwin->form && confwin->form->modified) {
            return g_strconcat(mucwin_title, " config *", NULL);
        }
        return g_strconcat(mucwin_title, " config", NULL);
@@ -556,7 +577,25 @@ win_show_subwin(ProfWin* window)
    }

    ProfLayoutSplit* layout = (ProfLayoutSplit*)window->layout;
+    // If a subwindow already exists (e.g. repeated call), destroy it to avoid leaks
+    if (layout->subwin) {
+        delwin(layout->subwin);
+        layout->subwin = NULL;
+    }
+
+    // Ensure minimum width to avoid creating a zero-width pad
+    if (subwin_cols <= 0) {
+        subwin_cols = 1;
+    }
+
    layout->subwin = newpad(PAD_SIZE, subwin_cols);
+    if (layout->subwin == NULL) {
+        // Failed to allocate subwindow; keep base window resized to full width
+        log_error("Failed to create subwindow pad (cols=%d)", subwin_cols);
+        wresize(layout->base.win, PAD_SIZE, cols);
+        win_redraw(window);
+        return;
+    }
    wbkgd(layout->subwin, theme_attrs(THEME_TEXT));
    wresize(layout->base.win, PAD_SIZE, cols - subwin_cols);
    win_redraw(window);
@@ -910,6 +949,11 @@ win_refresh_with_subwin(ProfWin* window)
    int row_end = screen_mainwin_row_end();
    ProfLayoutSplit* layout = (ProfLayoutSplit*)window->layout;

+    // Safety: if subwindow is not active, nothing to refresh
+    if (layout == NULL || layout->subwin == NULL) {
+        return;
+    }
+
    if (window->type == WIN_MUC) {
        subwin_cols = win_occpuants_cols();
    } else if (window->type == WIN_CONSOLE) {
@@ -2038,7 +2082,14 @@ win_print_loading_history(ProfWin* window)
    gboolean is_buffer_empty = buffer_size(window->layout->buffer) == 0;

    if (!is_buffer_empty) {
-        timestamp = buffer_get_entry(window->layout->buffer, 0)->time;
+        ProfBuffEntry* first = buffer_get_entry(window->layout->buffer, 0);
+        if (first && first->time) {
+            timestamp = first->time;
+        } else {
+            // Fallback to current time if entry/time is unavailable
+            timestamp = g_date_time_new_now_local();
+            is_buffer_empty = TRUE; // ensure we unref fallback timestamp below
+        }
    } else {
        timestamp = g_date_time_new_now_local();
    }
@@ -2238,7 +2289,7 @@ void
 win_handle_command_exec_result_note(ProfWin* window, const char* const type, const char* const value)
 {
    assert(window != NULL);
-    win_println(window, THEME_DEFAULT, "!", value);
+    win_println(window, THEME_DEFAULT, "!", "%s", value);
 }

 void
--- a/src/ui/window_list.c
+++ b/src/ui/window_list.c
@@ -407,8 +407,10 @@ wins_get_by_string(const char* str)
        if (barejid) {
            ProfChatWin* chatwin = wins_get_chat(barejid);
            if (chatwin) {
+                free(barejid);
                return (ProfWin*)chatwin;
            }
+            free(barejid);
        }
    }

@@ -603,6 +605,9 @@ wins_new_xmlconsole(void)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_xmlconsole();
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);
    autocomplete_add(wins_ac, "xmlconsole");
    autocomplete_add(wins_close_ac, "xmlconsole");
@@ -614,6 +619,9 @@ wins_new_chat(const char* const barejid)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_chat(barejid);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);

    autocomplete_add(wins_ac, barejid);
@@ -637,6 +645,9 @@ wins_new_muc(const char* const roomjid)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_muc(roomjid);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);
    autocomplete_add(wins_ac, roomjid);
    autocomplete_add(wins_close_ac, roomjid);
@@ -651,6 +662,9 @@ wins_new_config(const char* const roomjid, DataForm* form, ProfConfWinCallback s
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_config(roomjid, form, submit, cancel, userdata);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);

    return newwin;
@@ -661,6 +675,9 @@ wins_new_private(const char* const fulljid)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_private(fulljid);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);
    autocomplete_add(wins_ac, fulljid);
    autocomplete_add(wins_close_ac, fulljid);
@@ -675,6 +692,9 @@ wins_new_plugin(const char* const plugin_name, const char* const tag)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_plugin(plugin_name, tag);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);
    autocomplete_add(wins_ac, tag);
    autocomplete_add(wins_close_ac, tag);
@@ -686,6 +706,9 @@ wins_new_vcard(vCard* vcard)
 {
    int result = _wins_get_next_available_num(keys);
    ProfWin* newwin = win_create_vcard(vcard);
+    if (!newwin) {
+        return NULL;
+    }
    _wins_htable_insert(windows, GINT_TO_POINTER(result), newwin);

    return newwin;
--- a/src/xmpp/capabilities.c
+++ b/src/xmpp/capabilities.c
@@ -171,16 +171,15 @@ caps_get_features(void)
 {
    GList* result = NULL;

-    GList* features_as_list = g_hash_table_get_keys(prof_features);
-    GList* curr = features_as_list;
-    while (curr) {
-        result = g_list_append(result, strdup(curr->data));
-        curr = g_list_next(curr);
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init(&iter, prof_features);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        result = g_list_append(result, strdup((char*)key));
    }
-    g_list_free(features_as_list);

    GList* plugin_features = plugins_get_disco_features();
-    curr = plugin_features;
+    GList* curr = plugin_features;
    while (curr) {
        result = g_list_append(result, strdup(curr->data));
        curr = g_list_next(curr);
--- a/src/xmpp/connection.c
+++ b/src/xmpp/connection.c
@@ -148,7 +148,7 @@ connection_init(void)
    if (string_to_verbosity(v, &verbosity, &err_msg)) {
        xmpp_ctx_set_verbosity(conn.xmpp_ctx, verbosity);
    } else {
-        cons_show(err_msg);
+        cons_show("%s", err_msg);
    }
    conn.xmpp_conn = xmpp_conn_new(conn.xmpp_ctx);

@@ -638,22 +638,18 @@ gboolean
 connection_supports(const char* const feature)
 {
    gboolean ret = FALSE;
-    GList* jids = g_hash_table_get_keys(conn.features_by_jid);
+    GHashTableIter iter;
+    gpointer key, value;

-    GList* curr = jids;
-    while (curr) {
-        char* jid = curr->data;
-        GHashTable* features = g_hash_table_lookup(conn.features_by_jid, jid);
+    g_hash_table_iter_init(&iter, conn.features_by_jid);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        GHashTable* features = (GHashTable*)value;
        if (features && g_hash_table_lookup(features, feature)) {
            ret = TRUE;
            break;
        }
-
-        curr = g_list_next(curr);
    }

-    g_list_free(jids);
-
    return ret;
 }

@@ -664,22 +660,17 @@ connection_jid_for_feature(const char* const feature)
        return NULL;
    }

-    GList* jids = g_hash_table_get_keys(conn.features_by_jid);
+    GHashTableIter iter;
+    gpointer key, value;

-    GList* curr = jids;
-    while (curr) {
-        char* jid = curr->data;
-        GHashTable* features = g_hash_table_lookup(conn.features_by_jid, jid);
+    g_hash_table_iter_init(&iter, conn.features_by_jid);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        GHashTable* features = (GHashTable*)value;
        if (features && g_hash_table_lookup(features, feature)) {
-            g_list_free(jids);
-            return jid;
+            return (const char*)key;
        }
-
-        curr = g_list_next(curr);
    }

-    g_list_free(jids);
-
    return NULL;
 }

@@ -1034,7 +1025,7 @@ _connection_handler(xmpp_conn_t* const xmpp_conn, const xmpp_conn_event_t status
                conn.sm_state = xmpp_conn_get_sm_state(conn.xmpp_conn);
                if (send_queue_len > 0 && prefs_get_boolean(PREF_STROPHE_SM_RESEND)) {
                    conn.queued_messages = calloc(send_queue_len + 1, sizeof(*conn.queued_messages));
-                    for (int n = 0; n < send_queue_len && conn.queued_messages[n]; ++n) {
+                    for (int n = 0; n < send_queue_len; ++n) {
                        conn.queued_messages[n] = xmpp_conn_send_queue_drop_element(conn.xmpp_conn, XMPP_QUEUE_OLDEST);
                    }
                } else if (send_queue_len > 0) {
@@ -1189,12 +1180,13 @@ connection_debug_print_features()
            continue;
        }

-        GList* feature_keys = g_hash_table_get_keys(features);
-        for (GList* l = feature_keys; l != NULL; l = l->next) {
-            const char* feature = (const char*)l->data;
+        GHashTableIter feature_iter;
+        gpointer feature_key, feature_value;
+        g_hash_table_iter_init(&feature_iter, features);
+        while (g_hash_table_iter_next(&feature_iter, &feature_key, &feature_value)) {
+            const char* feature = (const char*)feature_key;
            log_debug("%s:\t%s", jid, feature);
        }
-        g_list_free(feature_keys);
    }

    log_debug("=== End of Features ===");
--- a/src/xmpp/form.c
+++ b/src/xmpp/form.c
@@ -437,18 +437,7 @@ form_get_form_type_field(DataForm* form)
 gboolean
 form_tag_exists(DataForm* form, const char* const tag)
 {
-    GList* tags = g_hash_table_get_keys(form->tag_to_var);
-    GList* curr = tags;
-    while (curr) {
-        if (g_strcmp0(curr->data, tag) == 0) {
-            g_list_free(tags);
-            return TRUE;
-        }
-        curr = g_list_next(curr);
-    }
-
-    g_list_free(tags);
-    return FALSE;
+    return g_hash_table_contains(form->tag_to_var, tag);
 }

 form_field_type_t
--- a/src/xmpp/iq.c
+++ b/src/xmpp/iq.c
@@ -2532,9 +2532,6 @@ _disco_items_result_handler(xmpp_stanza_t* const stanza)
    }

    xmpp_stanza_t* child = xmpp_stanza_get_children(query);
-    if (child == NULL) {
-        return;
-    }

    while (child) {
        const char* stanza_name = xmpp_stanza_get_name(child);
--- a/src/xmpp/message.c
+++ b/src/xmpp/message.c
@@ -868,7 +868,7 @@ _handle_error(xmpp_stanza_t* const stanza)
    g_string_append(log_msg, " error=");
    g_string_append(log_msg, err_msg);

-    log_info(log_msg->str);
+    log_info("%s", log_msg->str);

    g_string_free(log_msg, TRUE);

--- a/src/xmpp/ox.c
+++ b/src/xmpp/ox.c
@@ -326,7 +326,7 @@ _ox_metadata_result(xmpp_stanza_t* const stanza, void* const userdata)

        if (fingerprint) {
            if (strlen(fingerprint) == KEYID_LENGTH) {
-                cons_show(fingerprint);
+                cons_show("%s", fingerprint);
            } else {
                cons_show("OX: Wrong char size of public key");
                log_error("[OX] Wrong chat size of public key %s", fingerprint);
--- a/src/xmpp/presence.c
+++ b/src/xmpp/presence.c
@@ -455,7 +455,7 @@ _presence_error_handler(xmpp_stanza_t* const stanza)
    g_string_append(log_msg, " error=");
    g_string_append(log_msg, err_msg);

-    log_info(log_msg->str);
+    log_info("%s", log_msg->str);

    g_string_free(log_msg, TRUE);

--- a/tests/functionaltests/functionaltests.c
+++ b/tests/functionaltests/functionaltests.c
@@ -14,21 +14,31 @@
 * flaky tests caused by leftover state. The overhead is acceptable since
 * functional tests run less frequently than unit tests.
 *
- * Tests are organized into groups for better maintainability:
- *   Group 1: Connection, Ping, Rooms, Presence
- *   Group 2: Messages, Receipts, Roster management
- *   Group 3: MUC (Multi-User Chat) functionality
- *   Group 4: Carbons, Chat sessions, Software version, Disconnect
+ * Tests are organized into groups for better maintainability and parallel execution:
+ *   Group 1: Connect, Ping, Rooms, Software
+ *   Group 2: Message, Receipts, Roster, Chat Session
+ *   Group 3: Presence, Disconnect
+ *   Group 4: MUC, Carbons
+ *
+ * Parallel execution:
+ *   ./functionaltests        - run all tests sequentially
+ *   ./functionaltests N      - run group N only (N = 1..num_groups)
+ *
+ * For parallel execution, run multiple groups simultaneously:
+ *   ./functionaltests 1 & ./functionaltests 2 & ./functionaltests 3 & ./functionaltests 4 & wait
 */

 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <string.h>
 #include "prof_cmocka.h"
 #include <sys/stat.h>

 #include "config.h"

+#include "common.h"
 #include "proftest.h"
 #include "test_connect.h"
 #include "test_ping.h"
@@ -42,6 +52,7 @@
 #include "test_software.h"
 #include "test_muc.h"
 #include "test_disconnect.h"
+#include "test_lastactivity.h"

 /* Macro to wrap each test with setup/teardown functions */
 #define PROF_FUNC_TEST(test) cmocka_unit_test_setup_teardown(test, init_prof_test, close_prof_test)
@@ -49,13 +60,27 @@
 int
 main(int argc, char* argv[])
 {
-    const struct CMUnitTest all_tests[] = {
+    int group = 0;  /* 0 = all groups */
+    if (argc > 1) {
+        group = atoi(argv[1]);
+        if (group < 1 || group > 4) {
+            fprintf(stderr, "Usage: %s [group]\n", argv[0]);
+            fprintf(stderr, "  group: 1-4 to run specific group, or omit for all\n");
+            return 1;
+        }
+    }

-        /* ============================================================
-         * GROUP 1: Connect, Ping, Rooms, Presence
-         * Basic XMPP session establishment and presence management
-         * ============================================================ */
+    char group_env[16];
+    snprintf(group_env, sizeof(group_env), "%d", group);
+    setenv("PROF_TEST_GROUP", group_env, 1);
+    
+    fprintf(stderr, "[PROF_TEST] Starting functional tests, group=%d\n", group);

+    /* ============================================================
+     * GROUP 1: Connect, Ping, Rooms, Software
+     * Basic XMPP session establishment and server queries
+     * ============================================================ */
+    const struct CMUnitTest group1_tests[] = {
        /* Connection tests - verify login, roster, bookmarks */
        PROF_FUNC_TEST(connect_jid_requests_roster),
        PROF_FUNC_TEST(connect_jid_sends_presence_after_receiving_roster),
@@ -73,28 +98,24 @@ main(int argc, char* argv[])
        /* Room discovery - XEP-0045 */
        PROF_FUNC_TEST(rooms_query),

-        /* Presence tests - online/away/xa/dnd/chat status */
-        PROF_FUNC_TEST(presence_online),
-        PROF_FUNC_TEST(presence_online_with_message),
-        PROF_FUNC_TEST(presence_away),
-        PROF_FUNC_TEST(presence_away_with_message),
-        PROF_FUNC_TEST(presence_xa),
-        PROF_FUNC_TEST(presence_xa_with_message),
-        PROF_FUNC_TEST(presence_dnd),
-        PROF_FUNC_TEST(presence_dnd_with_message),
-        PROF_FUNC_TEST(presence_chat),
-        PROF_FUNC_TEST(presence_chat_with_message),
-        PROF_FUNC_TEST(presence_set_priority),
-        PROF_FUNC_TEST(presence_includes_priority),
-        PROF_FUNC_TEST(presence_keeps_status),
-        PROF_FUNC_TEST(presence_received),
-        PROF_FUNC_TEST(presence_missing_resource_defaults),
+        /* Software Version - XEP-0092 */
+        PROF_FUNC_TEST(send_software_version_request),
+        PROF_FUNC_TEST(display_software_version_result),
+        PROF_FUNC_TEST(shows_message_when_software_version_error),
+        PROF_FUNC_TEST(display_software_version_result_when_from_domainpart),
+        PROF_FUNC_TEST(show_message_in_chat_window_when_no_resource),
+        PROF_FUNC_TEST(display_software_version_result_in_chat),

-        /* ============================================================
-         * GROUP 2: Message, Receipts, Roster
-         * Core messaging and contact management
-         * ============================================================ */
+        /* Last Activity - XEP-0012 */
+        PROF_FUNC_TEST(responds_to_last_activity_request),
+        PROF_FUNC_TEST(last_activity_request_to_contact),
+    };

+    /* ============================================================
+     * GROUP 2: Message, Receipts, Roster, Chat Session
+     * Core messaging and contact management
+     * ============================================================ */
+    const struct CMUnitTest group2_tests[] = {
        /* Basic message send/receive */
        PROF_FUNC_TEST(message_send),
        PROF_FUNC_TEST(message_receive_console),
@@ -112,21 +133,54 @@ main(int argc, char* argv[])
        PROF_FUNC_TEST(sends_remove_item_nick),
        PROF_FUNC_TEST(sends_nick_change),

-        /* ============================================================
-         * GROUP 3: MUC (Multi-User Chat)
-         * XEP-0045 conference room functionality
-         * ============================================================ */
+        /* Chat session management - bare/full JID routing */
+        PROF_FUNC_TEST(sends_message_to_barejid_when_contact_offline),
+        PROF_FUNC_TEST(sends_message_to_barejid_when_contact_online),
+        PROF_FUNC_TEST(sends_message_to_fulljid_when_received_from_fulljid),
+        PROF_FUNC_TEST(sends_subsequent_messages_to_fulljid),
+        PROF_FUNC_TEST(resets_to_barejid_after_presence_received),
+        PROF_FUNC_TEST(new_session_when_message_received_from_different_fulljid),
+    };

-        /* Room join with various options */
+    /* ============================================================
+     * GROUP 3: Presence, Disconnect
+     * Online/away/xa/dnd/chat status management
+     * ============================================================ */
+    const struct CMUnitTest group3_tests[] = {
+        PROF_FUNC_TEST(presence_online),
+        PROF_FUNC_TEST(presence_online_with_message),
+        PROF_FUNC_TEST(presence_away),
+        PROF_FUNC_TEST(presence_away_with_message),
+        PROF_FUNC_TEST(presence_xa),
+        PROF_FUNC_TEST(presence_xa_with_message),
+        PROF_FUNC_TEST(presence_dnd),
+        PROF_FUNC_TEST(presence_dnd_with_message),
+        PROF_FUNC_TEST(presence_chat),
+        PROF_FUNC_TEST(presence_chat_with_message),
+        PROF_FUNC_TEST(presence_set_priority),
+        PROF_FUNC_TEST(presence_includes_priority),
+        PROF_FUNC_TEST(presence_keeps_status),
+        PROF_FUNC_TEST(presence_received),
+        PROF_FUNC_TEST(presence_missing_resource_defaults),
+
+        /* Disconnect - clean session termination */
+        PROF_FUNC_TEST(disconnect_ends_session),
+    };
+
+    /* ============================================================
+     * GROUP 4: MUC, Carbons
+     * Multi-user chat and message synchronization
+     * ============================================================ */
+    const struct CMUnitTest group4_tests[] = {
+        /* MUC room join with various options - XEP-0045 */
        PROF_FUNC_TEST(sends_room_join),
        PROF_FUNC_TEST(sends_room_join_with_nick),
        PROF_FUNC_TEST(sends_room_join_with_password),
        PROF_FUNC_TEST(sends_room_join_with_nick_and_password),

-        /* Room information display */
+        /* MUC room information display */
        PROF_FUNC_TEST(shows_role_and_affiliation_on_join),
        PROF_FUNC_TEST(shows_subject_on_join),
-        // PROF_FUNC_TEST(shows_history_message), // temporarily disabled due to timing issues in CI
        PROF_FUNC_TEST(shows_occupant_join),

        /* MUC messaging */
@@ -134,15 +188,14 @@ main(int argc, char* argv[])
        PROF_FUNC_TEST(shows_me_message_from_occupant),
        PROF_FUNC_TEST(shows_me_message_from_self),

-        /* Console notification settings for MUC */
+        /* MUC console notification settings */
        PROF_FUNC_TEST(shows_all_messages_in_console_when_window_not_focussed),
        PROF_FUNC_TEST(shows_first_message_in_console_when_window_not_focussed),
        PROF_FUNC_TEST(shows_no_message_in_console_when_window_not_focussed),

-        /* ============================================================
-         * GROUP 4: Carbons, Chat Session, Software, Disconnect
-         * Message synchronization and session management
-         * ============================================================ */
+        /* MUC moderation - XEP-0045 room admin */
+        PROF_FUNC_TEST(sends_affiliation_list_request),
+        PROF_FUNC_TEST(sends_kick_request),

        /* Message Carbons - XEP-0280 (message sync across devices) */
        PROF_FUNC_TEST(send_enable_carbons),
@@ -151,26 +204,34 @@ main(int argc, char* argv[])
        PROF_FUNC_TEST(receive_carbon),
        PROF_FUNC_TEST(receive_self_carbon),
        PROF_FUNC_TEST(receive_private_carbon),
-
-        /* Chat session management - bare/full JID routing */
-        PROF_FUNC_TEST(sends_message_to_barejid_when_contact_offline),
-        PROF_FUNC_TEST(sends_message_to_barejid_when_contact_online),
-        PROF_FUNC_TEST(sends_message_to_fulljid_when_received_from_fulljid),
-        PROF_FUNC_TEST(sends_subsequent_messages_to_fulljid),
-        PROF_FUNC_TEST(resets_to_barejid_after_presence_received),
-        PROF_FUNC_TEST(new_session_when_message_received_from_different_fulljid),
-
-        /* Software Version - XEP-0092 */
-        PROF_FUNC_TEST(send_software_version_request),
-        PROF_FUNC_TEST(display_software_version_result),
-        PROF_FUNC_TEST(shows_message_when_software_version_error),
-        PROF_FUNC_TEST(display_software_version_result_when_from_domainpart),
-        PROF_FUNC_TEST(show_message_in_chat_window_when_no_resource),
-        PROF_FUNC_TEST(display_software_version_result_in_chat),
-
-        /* Disconnect - clean session termination */
-        PROF_FUNC_TEST(disconnect_ends_session),
    };

-    return cmocka_run_group_tests(all_tests, NULL, NULL);
+    /* Test group registry for easy extension */
+    struct {
+        const char* name;
+        const struct CMUnitTest* tests;
+        size_t count;
+    } groups[] = {
+        { "Group 1: Connect/Ping/Rooms/Software", group1_tests, ARRAY_SIZE(group1_tests) },
+        { "Group 2: Message/Receipts/Roster/Session", group2_tests, ARRAY_SIZE(group2_tests) },
+        { "Group 3: Presence/Disconnect", group3_tests, ARRAY_SIZE(group3_tests) },
+        { "Group 4: MUC/Carbons", group4_tests, ARRAY_SIZE(group4_tests) },
+    };
+    const int num_groups = ARRAY_SIZE(groups);
+
+    int result = 0;
+
+    if (group > 0 && group <= num_groups) {
+        /* Run specific group */
+        result = _cmocka_run_group_tests(groups[group - 1].name, groups[group - 1].tests,
+                                         groups[group - 1].count, NULL, NULL);
+    } else {
+        /* Run all groups sequentially */
+        for (int i = 0; i < num_groups; i++) {
+            result |= _cmocka_run_group_tests(groups[i].name, groups[i].tests,
+                                              groups[i].count, NULL, NULL);
+        }
+    }
+
+    return result;
 }
--- a/tests/functionaltests/proftest.c
+++ b/tests/functionaltests/proftest.c
@@ -17,6 +17,9 @@

 #include "proftest.h"

+/* Number of parallel test groups for CI builds */
+#define TEST_GROUPS 4
+
 char *config_orig;
 char *data_orig;

@@ -24,6 +27,13 @@ int fd = 0;
 int stub_port = 5230;
 pid_t child_pid = 0;

+/*
+ * Dynamic XDG paths based on stub_port for parallel test execution.
+ * Each test instance gets unique directories to avoid file conflicts.
+ */
+char xdg_config_home[256];
+char xdg_data_home[256];
+
 /*
 * Buffer for accumulating output from profanity.
 * 64KB is sufficient for typical test output while keeping memory usage
@@ -77,7 +87,7 @@ _mkdir_recursive(const char *dir)
 void
 _create_config_dir(void)
 {
-    GString *profanity_dir = g_string_new(XDG_CONFIG_HOME);
+    GString *profanity_dir = g_string_new(xdg_config_home);
    g_string_append(profanity_dir, "/profanity");

    if (!_mkdir_recursive(profanity_dir->str)) {
@@ -90,7 +100,7 @@ _create_config_dir(void)
 void
 _create_data_dir(void)
 {
-    GString *profanity_dir = g_string_new(XDG_DATA_HOME);
+    GString *profanity_dir = g_string_new(xdg_data_home);
    g_string_append(profanity_dir, "/profanity");

    if (!_mkdir_recursive(profanity_dir->str)) {
@@ -103,7 +113,7 @@ _create_data_dir(void)
 void
 _create_chatlogs_dir(void)
 {
-    GString *chatlogs_dir = g_string_new(XDG_DATA_HOME);
+    GString *chatlogs_dir = g_string_new(xdg_data_home);
    g_string_append(chatlogs_dir, "/profanity/chatlogs");

    if (!_mkdir_recursive(chatlogs_dir->str)) {
@@ -116,7 +126,7 @@ _create_chatlogs_dir(void)
 void
 _create_logs_dir(void)
 {
-    GString *logs_dir = g_string_new(XDG_DATA_HOME);
+    GString *logs_dir = g_string_new(xdg_data_home);
    g_string_append(logs_dir, "/profanity/logs");

    if (!_mkdir_recursive(logs_dir->str)) {
@@ -129,7 +139,15 @@ _create_logs_dir(void)
 void
 _cleanup_dirs(void)
 {
-    int res = system("rm -rf ./tests/functionaltests/files");
+    const char *group_env = getenv("PROF_TEST_GROUP");
+    int group = group_env ? atoi(group_env) : 0;
+    int dir_id = (group >= 1 && group <= TEST_GROUPS) ? group : stub_port;
+    
+    printf("[PROF_TEST] Cleaning up directories for group %d (dir_id %d)\n", group, dir_id);
+    
+    char cmd[512];
+    snprintf(cmd, sizeof(cmd), "rm -rf ./test-files/%d", dir_id);
+    int res = system(cmd);
    if (res == -1) {
        assert_true(FALSE);
    }
@@ -212,33 +230,83 @@ prof_start(void)
    /* Set non-blocking mode for reading */
    int flags = fcntl(fd, F_GETFL, 0);
    fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+    
+    /* Brief wait for process to initialize */
+    usleep(50000);  /* 50ms */
 }

 int
 init_prof_test(void **state)
 {
+    /* Get test group from environment for static resource allocation */
+    const char *group_env = getenv("PROF_TEST_GROUP");
+    int group = group_env ? atoi(group_env) : 0;
+    
+    /* Get build index for port offset (for parallel CI builds) */
+    const char *build_env = getenv("PROF_BUILD_INDEX");
+    int build_idx = build_env ? atoi(build_env) : 0;
+    
+    /* Calculate port base: each build uses a different range of TEST_GROUPS ports.
+     * Build 0 (local/default): 5230-5233, Full: 5230-5233, Minimal: 5234-5237, etc.
+     * Build 0 and Full share the same range because build 0 is for local runs or sequential run (no parallel builds),
+     * while Full/Minimal/NoEncrypt/Default are used in CI where they run in parallel. */
+    int port_base = 5230 + ((build_idx > 0 ? build_idx - 1 : 0) * TEST_GROUPS);
+    
+    /* Static resource allocation to avoid conflicts in parallel execution.
+     * Group 1-4: use static port assignment.
+     * Group 0 (all groups): use dynamic allocation as fallback. */
    gboolean started = FALSE;
-    for (int p = 5230; p < 5250; ++p) {
-        int ret = stbbr_start(STBBR_LOGDEBUG, p, 0);
-        if (ret == 0) {
-            stub_port = p;
+    
+    if (group >= 1 && group <= TEST_GROUPS) {
+        /* Static allocation: each group gets a dedicated port */
+        stub_port = port_base + group - 1;
+        printf("[PROF_TEST] Build %d, Group %d: trying port %d\n", build_idx, group, stub_port);
+        
+        if (stbbr_start(STBBR_LOGDEBUG, stub_port, 0) == 0) {
            started = TRUE;
-            break;
+            printf("[PROF_TEST] Started stabber on port %d\n", stub_port);
+        } else {
+            printf("[PROF_TEST] Failed to start stabber on port %d\n", stub_port);
        }
    }
+    
+    /* Fallback to dynamic allocation if static failed or group=0 */
    if (!started) {
-        assert_true(FALSE); // could not start stabber on any port in range
+        printf("[PROF_TEST] Using dynamic port allocation\n");
+        for (int p = port_base; p < port_base + 20; ++p) {
+            if (stbbr_start(STBBR_LOGDEBUG, p, 0) == 0) {
+                stub_port = p;
+                started = TRUE;
+                printf("[PROF_TEST] Started stabber on port %d\n", stub_port);
+                break;
+            }
+        }
+    }
+    
+    if (!started) {
+        fprintf(stderr, "[PROF_TEST] ERROR: could not start stabber on any port\n");
        return -1;
    }

+    /* Generate unique XDG paths based on group for parallel execution.
+     * Use ./test-files/ in current (build) directory for out-of-tree builds compatibility. */
+    int dir_id = (group >= 1 && group <= TEST_GROUPS) ? group : stub_port;
+    snprintf(xdg_config_home, sizeof(xdg_config_home),
+             "./test-files/%d/xdg_config_home", dir_id);
+    snprintf(xdg_data_home, sizeof(xdg_data_home),
+             "./test-files/%d/xdg_data_home", dir_id);
+    
+    printf("[PROF_TEST] Group %d using directories: config=%s, data=%s\n", 
+           group, xdg_config_home, xdg_data_home);
+
    // Give stabber server thread time to start listening
    usleep(100000); // 100ms

    config_orig = getenv("XDG_CONFIG_HOME");
    data_orig = getenv("XDG_DATA_HOME");

-    setenv("XDG_CONFIG_HOME", XDG_CONFIG_HOME, 1);
-    setenv("XDG_DATA_HOME", XDG_DATA_HOME, 1);
+    setenv("XDG_CONFIG_HOME", xdg_config_home, 1);
+    setenv("XDG_DATA_HOME", xdg_data_home, 1);

    _cleanup_dirs();

@@ -386,6 +454,16 @@ prof_output_regex(const char *pattern)
        usleep(50000);  /* 50ms */
    }
    
+    /* Timeout reached - log diagnostic info */
+    fprintf(stderr, "Timeout waiting for regex '%s' after %d seconds. Last output:\n", pattern, expect_timeout);
+    size_t len = strlen(output_buffer);
+    if (len > 500) {
+        fprintf(stderr, "...%s", output_buffer + len - 500);
+    } else {
+        fprintf(stderr, "%s", output_buffer);
+    }
+    fprintf(stderr, "\n");
+    
    regfree(&regex);
    return 0;
 }
--- a/tests/functionaltests/proftest.h
+++ b/tests/functionaltests/proftest.h
@@ -1,8 +1,13 @@
 #ifndef __H_PROFTEST
 #define __H_PROFTEST

-#define XDG_CONFIG_HOME "./tests/functionaltests/files/xdg_config_home"
-#define XDG_DATA_HOME   "./tests/functionaltests/files/xdg_data_home"
+/*
+ * XDG paths are dynamic and generated per-test based on stub_port.
+ * Each test instance uses unique directories (./tests/functionaltests/files/{port}/xdg_*)
+ * to allow parallel test execution without file conflicts.
+ */
+extern char xdg_config_home[256];
+extern char xdg_data_home[256];

 extern int stub_port;

--- a/tests/functionaltests/test_lastactivity.c
+++ b/tests/functionaltests/test_lastactivity.c
@@ -0,0 +1,63 @@
+/*
+ * test_lastactivity.c
+ * Functional tests for Last Activity (XEP-0012)
+ */
+#include <glib.h>
+#include "prof_cmocka.h"
+#include <stdlib.h>
+#include <string.h>
+
+#include <stabber.h>
+
+#include "proftest.h"
+
+void
+responds_to_last_activity_request(void **state)
+{
+    prof_connect();
+
+    // Send incoming last activity request
+    stbbr_send(
+        "<iq id='last1' type='get' to='stabber@localhost/profanity' from='buddy1@localhost/mobile'>"
+            "<query xmlns='jabber:iq:last'/>"
+        "</iq>"
+    );
+
+    // Verify that CProof responds with last activity info
+    // The 'seconds' attribute indicates idle time
+    assert_true(stbbr_received(
+        "<iq id='last1' type='result' to='buddy1@localhost/mobile'>"
+            "<query xmlns='jabber:iq:last' seconds='*'/>"
+        "</iq>"
+    ));
+}
+
+void
+last_activity_request_to_contact(void **state)
+{
+    prof_connect();
+
+    stbbr_send(
+        "<presence to='stabber@localhost' from='buddy1@localhost/mobile'>"
+            "<priority>10</priority>"
+            "<status>I'm here</status>"
+        "</presence>"
+    );
+    assert_true(prof_output_exact("Buddy1 (mobile) is online, \"I'm here\""));
+
+    // Register response for last activity query
+    stbbr_for_query("jabber:iq:last",
+        "<iq id='*' type='result' from='buddy1@localhost/mobile' to='stabber@localhost/profanity'>"
+            "<query xmlns='jabber:iq:last' seconds='120'/>"
+        "</iq>"
+    );
+
+    prof_input("/lastactivity get buddy1@localhost/mobile");
+
+    // Verify the request was sent
+    assert_true(stbbr_received(
+        "<iq id='*' to='buddy1@localhost/mobile' type='get'>"
+            "<query xmlns='jabber:iq:last'/>"
+        "</iq>"
+    ));
+}
--- a/tests/functionaltests/test_lastactivity.h
+++ b/tests/functionaltests/test_lastactivity.h
@@ -0,0 +1,7 @@
+/*
+ * test_lastactivity.h
+ * Header for Last Activity tests (XEP-0012)
+ */
+
+void responds_to_last_activity_request(void **state);
+void last_activity_request_to_contact(void **state);
--- a/tests/functionaltests/test_muc.c
+++ b/tests/functionaltests/test_muc.c
@@ -393,3 +393,83 @@ shows_no_message_in_console_when_window_not_focussed(void **state)
    assert_false(prof_output_regex("testroom@conference\\.localhost \\(win 2\\)"));
    prof_timeout_reset();
 }
+
+void
+sends_affiliation_list_request(void **state)
+{
+    prof_connect();
+
+    stbbr_for_presence_to("testroom@conference.localhost/stabber",
+        "<presence id='*' lang='en' to='stabber@localhost/profanity' from='testroom@conference.localhost/stabber'>"
+            "<c hash='sha-1' xmlns='http://jabber.org/protocol/caps' node='http://profanity-im.github.io' ver='*'/>"
+            "<x xmlns='http://jabber.org/protocol/muc#user'>"
+                "<item role='moderator' jid='stabber@localhost/profanity' affiliation='owner'/>"
+            "</x>"
+            "<status code='110'/>"
+        "</presence>"
+    );
+
+    prof_input("/join testroom@conference.localhost");
+    assert_true(prof_output_regex("-> You have joined the room as stabber, role: moderator, affiliation: owner"));
+
+    prof_input("/affiliation owner list");
+
+    assert_true(stbbr_received(
+        "<iq id='*' to='testroom@conference.localhost' type='get'>"
+            "<query xmlns='http://jabber.org/protocol/muc#admin'>"
+                "<item affiliation='owner'/>"
+            "</query>"
+        "</iq>"
+    ));
+}
+
+void
+sends_kick_request(void **state)
+{
+    prof_connect();
+
+    // Enable MUC presence messages to see occupant join/leave
+    prof_input("/presence room all");
+    assert_true(prof_output_regex("All presence updates will appear"));
+
+    stbbr_for_presence_to("testroom@conference.localhost/stabber",
+        "<presence id='*' lang='en' to='stabber@localhost/profanity' from='testroom@conference.localhost/stabber'>"
+            "<c hash='sha-1' xmlns='http://jabber.org/protocol/caps' node='http://profanity-im.github.io' ver='*'/>"
+            "<x xmlns='http://jabber.org/protocol/muc#user'>"
+                "<item role='moderator' jid='stabber@localhost/profanity' affiliation='admin'/>"
+            "</x>"
+            "<status code='110'/>"
+        "</presence>"
+    );
+
+    prof_input("/join testroom@conference.localhost");
+    assert_true(prof_output_regex("-> You have joined the room as stabber, role: moderator, affiliation: admin"));
+
+    // Simulate another user in the room
+    stbbr_send(
+        "<presence to='stabber@localhost/profanity' from='testroom@conference.localhost/baduser'>"
+            "<x xmlns='http://jabber.org/protocol/muc#user'>"
+                "<item role='participant' jid='baduser@localhost/phone' affiliation='none'/>"
+            "</x>"
+        "</presence>"
+    );
+    sleep(1);
+    assert_true(prof_output_regex("baduser has joined"));
+
+    // Register success response for kick
+    stbbr_for_query("http://jabber.org/protocol/muc#admin",
+        "<iq id='*' type='result' from='testroom@conference.localhost'/>"
+    );
+
+    prof_input("/kick baduser \"spamming\"");
+
+    assert_true(stbbr_received(
+        "<iq id='*' to='testroom@conference.localhost' type='set'>"
+            "<query xmlns='http://jabber.org/protocol/muc#admin'>"
+                "<item nick='baduser' role='none'>"
+                    "<reason>spamming</reason>"
+                "</item>"
+            "</query>"
+        "</iq>"
+    ));
+}
--- a/tests/functionaltests/test_muc.h
+++ b/tests/functionaltests/test_muc.h
@@ -12,3 +12,5 @@ void shows_me_message_from_self(void **state);
 void shows_all_messages_in_console_when_window_not_focussed(void **state);
 void shows_first_message_in_console_when_window_not_focussed(void **state);
 void shows_no_message_in_console_when_window_not_focussed(void **state);
+void sends_affiliation_list_request(void **state);
+void sends_kick_request(void **state);
Author	SHA1	Message	Date
Jabber Developer	31538580fb	fix arch build All checks were successful CI Code / Check spelling (pull_request) Successful in 17s Details CI Code / Check coding style (pull_request) Successful in 28s Details CI Code / Linux (debian) (pull_request) Successful in 6m21s Details CI Code / Linux (ubuntu) (pull_request) Successful in 8m59s Details CI Code / Code Coverage (pull_request) Successful in 8m25s Details CI Code / Linux (arch) (pull_request) Successful in 10m31s Details CI Code / Check spelling (push) Successful in 17s Details CI Code / Check coding style (push) Successful in 31s Details CI Code / Linux (debian) (push) Successful in 6m29s Details CI Code / Linux (ubuntu) (push) Successful in 6m33s Details CI Code / Code Coverage (push) Successful in 9m3s Details CI Code / Linux (arch) (push) Successful in 10m31s Details	2026-02-18 17:39:25 +01:00
Jabber Developer	37ca2de308	ci: fix arch build Some checks failed CI Code / Check spelling (pull_request) Successful in 20s Details CI Code / Check coding style (pull_request) Successful in 34s Details CI Code / Linux (debian) (pull_request) Successful in 6m21s Details CI Code / Linux (ubuntu) (pull_request) Successful in 6m25s Details CI Code / Code Coverage (pull_request) Successful in 13m14s Details CI Code / Linux (arch) (pull_request) Successful in 7m26s Details CI Code / Check spelling (push) Successful in 19s Details CI Code / Check coding style (push) Successful in 30s Details CI Code / Linux (debian) (push) Successful in 6m26s Details CI Code / Linux (ubuntu) (push) Successful in 6m27s Details CI Code / Code Coverage (push) Has been cancelled Details CI Code / Linux (arch) (push) Has been cancelled Details	2026-02-17 16:30:52 +01:00
jabber.developer2	4fce333c9a	fix(xmpp): show message for empty disco#items results (XEP-0030) All checks were successful CI Code / Check spelling (pull_request) Successful in 23s Details CI Code / Check coding style (pull_request) Successful in 34s Details CI Code / Code Coverage (pull_request) Successful in 4m45s Details CI Code / Linux (debian) (pull_request) Successful in 6m10s Details CI Code / Linux (ubuntu) (pull_request) Successful in 6m17s Details CI Code / Linux (arch) (pull_request) Successful in 6m24s Details CI Code / Check spelling (push) Successful in 17s Details CI Code / Check coding style (push) Successful in 30s Details CI Code / Linux (debian) (push) Successful in 6m16s Details CI Code / Linux (ubuntu) (push) Successful in 6m22s Details CI Code / Linux (arch) (push) Successful in 6m27s Details CI Code / Code Coverage (push) Successful in 9m41s Details Per XEP-0030 section 3.1: 'if an entity has no associated items, it MUST return an empty <query/> element.' The client should display 'No service discovery items for X' when receiving an empty result, not silently ignore it. Previous version introduced in commit `f28655c5c` (2016-05-08) which added an early return when child == NULL, preventing the message from being shown.	2026-02-11 01:10:55 +03:00
Jabber Developer	467222d0ca	fix(ui,db): harden NULL handling, fix CWE-134, optimize iterations Some checks failed CI Code / Code Coverage (push) Failing after 10m34s Details CI Code / Check spelling (push) Failing after 10m47s Details CI Code / Check coding style (push) Failing after 11m4s Details CI Code / Linux (ubuntu) (push) Failing after 11m19s Details CI Code / Linux (debian) (push) Failing after 11m28s Details CI Code / Linux (arch) (push) Failing after 11m38s Details security(CWE-134): fix format string injections + add CI check fix(ui): subwindow lifecycle, newwin/newpad guards, fallback timestamps fix(db): sqlite cleanup on failures, sqlite3_close_v2 fix(xmpp): queued_messages loop, barejid leak perf(core): g_hash_table_iter_init instead of g_hash_table_get_keys refactor(ui): CLAMP macro in _check_subwin_width test: XEP-0012 and XEP-0045 functional tests Author: jabber.developer2 Closes #58, #85	2026-02-06 19:27:40 +01:00
Jabber Developer	f8826b7c79	ci: improve CI stability with parallel builds and Valgrind All checks were successful CI Code / Check spelling (push) Successful in 20s Details CI Code / Check coding style (push) Successful in 33s Details CI Code / Code Coverage (push) Successful in 4m47s Details CI Code / Linux (debian) (push) Successful in 6m9s Details CI Code / Linux (ubuntu) (push) Successful in 6m13s Details CI Code / Linux (arch) (push) Successful in 6m19s Details Major changes: Run 4 build configurations in parallel with Valgrind on Linux Add test failure detection verification (meta-test) Port allocation per build to prevent conflicts in parallel runs Add --coverage-only flag for dedicated coverage builds Code quality: Add TEST_GROUPS constant, CMOCKA patterns, helper functions Organize ci-build.sh into sections	2026-02-02 17:47:05 +01:00
Jabber Developer	8353a29b4f	fix(ci): remove insecure git clone flag, add ca-certificates All checks were successful CI Code / Check spelling (pull_request) Successful in 22s Details CI Code / Check coding style (pull_request) Successful in 34s Details CI Code / Code Coverage (pull_request) Successful in 17m45s Details CI Code / Linux (ubuntu) (pull_request) Successful in 18m1s Details CI Code / Linux (debian) (pull_request) Successful in 18m17s Details CI Code / Linux (arch) (pull_request) Successful in 19m0s Details CI Code / Check spelling (push) Successful in 19s Details CI Code / Check coding style (push) Successful in 31s Details CI Code / Code Coverage (push) Successful in 15m28s Details CI Code / Linux (ubuntu) (push) Successful in 18m11s Details CI Code / Linux (debian) (push) Successful in 18m22s Details CI Code / Linux (arch) (push) Successful in 20m51s Details Remove -c http.sslverify=false from all git clones (enables proper TLS verification, closes MITM risk). Explicitly install ca-certificates in every CI Docker image.	2026-01-21 17:10:37 +01:00
Jabber Developer	85c817ee8c	ci: speed up builds 4x with parallel tests, coverage, and ccache All checks were successful CI Code / Check spelling (push) Successful in 18s Details CI Code / Check coding style (push) Successful in 31s Details CI Code / Code Coverage (push) Successful in 15m25s Details CI Code / Linux (debian) (push) Successful in 15m57s Details CI Code / Linux (ubuntu) (push) Successful in 16m0s Details CI Code / Linux (arch) (push) Successful in 16m6s Details Split functional tests into 4 parallel groups and add check-functional-parallel target (~3x faster CI runs). Add branch-aware LCOV coverage reporting with new --enable-coverage option and lcov summary in CI pipeline. Enable ccache via -C configure flag for faster recompilations. Install lcov in all Docker images and use --depth 1 git clones + parallel make -j$(nproc) for quicker container builds. Update CONTRIBUTING.md with instructions for parallel test groups and adding new ones. All changes are tightly related CI/performance improvements developed in sequence. No external service uploads (e.g. Codecov skipped due to Gitea incompatibility).	2026-01-21 16:35:17 +01:00