macOS-related fixes and improvements

.github/workflows/macos.yml

@@ -60,7 +60,6 @@ jobs:
             --disable-smtp
             --disable-java
             --disable-java-modules
-            --disable-mqtt
             --disable-pacct
           "
           CMAKE_CONFIGURE_FLAGS="
@@ -74,7 +73,6 @@ jobs:
             -DENABLE_GRPC=OFF
             -DENABLE_JAVA=OFF
             -DENABLE_JAVA_MODULES=OFF
-            -DENABLE_MQTT=OFF
             -DENABLE_PACCT=OFF
           "
           PATH="${HOMEBREW_PREFIX}/opt/bison/bin:${HOMEBREW_PREFIX}/opt/libnet/bin:${HOMEBREW_PREFIX}/opt/net-snmp/bin:${HOMEBREW_PREFIX}/bin:${HOMEBREW_PREFIX}/sbin:${PYTHONUSERBASE}/bin:${PATH}"

CMakeLists.txt

@@ -18,7 +18,19 @@ project(axosyslog C)
 
 option(ENABLE_CPP "Enable C++" ON)
 
+if (ENABLE_CPP)
+  enable_language(CXX)
+  set(CMAKE_CXX_STANDARD 14 CACHE STRING "C++ standard")
+  set(CMAKE_CXX_STANDARD_REQUIRED OFF CACHE BOOL "C++ standard is a requirement")
+  set(CMAKE_CXX_EXTENSIONS OFF CACHE BOOL "C++ compiler specific extensions")
+  set(SYSLOG_NG_ENABLE_CPP ${ENABLE_CPP})
+endif()
+
 if(APPLE)
+  option(ENABLE_OBJC "Enable OSLog" ENABLE_DARWIN_OSL)
+endif()
+
+if(ENABLE_OBJC)
   # Turned out that even the latest gcc has no proper support of the required ObjC version
   # Once gcc was able to compile our ObjC modules properly this requirement could be removed again
   set(CMAKE_OBJC_COMPILER clang)
@@ -27,14 +39,6 @@ if(APPLE)
   set_property(GLOBAL PROPERTY OBJC_STANDARD_REQUIRED ON)
 endif()
 
-if (ENABLE_CPP)
-  enable_language(CXX)
-  set(CMAKE_CXX_STANDARD 14 CACHE STRING "C++ standard")
-  set(CMAKE_CXX_STANDARD_REQUIRED OFF CACHE BOOL "C++ standard is a requirement")
-  set(CMAKE_CXX_EXTENSIONS OFF CACHE BOOL "C++ compiler specific extensions")
-  set(SYSLOG_NG_ENABLE_CPP ${ENABLE_CPP})
-endif()
-
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/Modules ${PROJECT_SOURCE_DIR}/cmake/)
 set(CMAKE_POSITION_INDEPENDENT_CODE 1)
 set(BISON_FLAGS "-Wno-other -Werror=conflicts-sr -Werror=conflicts-rr -Wcounterexamples")
@@ -142,10 +146,6 @@ if (HAVE_TCP_KEEPIDLE AND HAVE_TCP_KEEPINTVL AND HAVE_TCP_KEEPCNT)
   set(SYSLOG_NG_HAVE_TCP_KEEPALIVE_TIMERS 1)
 endif()
 
-if (NOT APPLE)
-  set(SYSLOG_NG_HAVE_ENVIRON 1)
-endif()
-
 option(ENV_LD_LIBRARY_PATH "Set LD_LIBRARY_PATH during runtime to the value given" "")
 if (ENV_LD_LIBRARY_PATH)
   set(SYSLOG_NG_ENABLE_ENV_WRAPPER 1)

configure.ac

@@ -860,10 +860,6 @@ if test "x$blb_cv_keepcaps" = "xyes"; then
 	AC_DEFINE(HAVE_PR_SET_KEEPCAPS, 1, [have PR_SET_KEEPCAPS])
 fi
 
-if test "$ostype" != "Darwin" ; then
-	AC_DEFINE(HAVE_ENVIRON, [1], [Specifies whether the environ global variable exists])
-fi
-
 AC_CACHE_CHECK(for modern utmp,
                blb_cv_c_modern_utmp,
 [AC_TRY_COMPILE([

contrib/Brewfile

@@ -10,7 +10,7 @@ brew "ivykis"
 brew "json-c"
 brew "libtool"
 brew "openssl@3"
-brew "pcre"
+brew "pcre2"
 brew "pkg-config"
 
 brew "curl"
@@ -25,6 +25,7 @@ brew "net-snmp"
 brew "python@3", link: true, force: true
 brew "rabbitmq-c"
 brew "riemann-client"
+brew "libpaho-mqtt"
 
 brew "grpc"
 

lib/compat/CMakeLists.txt

@@ -18,6 +18,7 @@ set(COMPAT_HEADERS
     compat/cpp-end.h
     compat/curl.h
     compat/json.h
+    compat/inttypes.h
     PARENT_SCOPE)
 
 set(COMPAT_SOURCES

lib/compat/Makefile.am

@@ -22,7 +22,8 @@ compatinclude_HEADERS		= 	\
 	lib/compat/un.h			\
 	lib/compat/cpp-start.h	\
 	lib/compat/cpp-end.h	\
-	lib/compat/curl.h
+	lib/compat/curl.h	\
+	lib/compat/inttypes.h
 
 compat_sources			= 	\
 	lib/compat/getutent.c		\

lib/compat/inttypes.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2002-2014 Balabit
+ * Copyright (c) 2024 Sergey Fedorov
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As an additional exemption you are allowed to compile & link against the
+ * OpenSSL libraries as published by the OpenSSL project. See the file
+ * COPYING for details.
+ *
+ */
+
+#ifndef COMPAT_INTTYPES_H_INCLUDED
+#define COMPAT_INTTYPES_H_INCLUDED
+
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS
+#endif
+
+#include <inttypes.h>
+
+#endif

lib/gprocess.c

@@ -104,7 +104,10 @@ static gboolean stderr_present = TRUE;
 static int have_capsyslog = FALSE;
 static cap_value_t cap_syslog;
 #endif
-#ifdef SYSLOG_NG_HAVE_ENVIRON
+#ifdef __APPLE__
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
+#else
 extern char **environ;
 #endif
 
@@ -553,7 +556,6 @@ g_process_set_caps(const gchar *caps)
 void
 g_process_set_argv_space(gint argc, gchar **argv)
 {
-#ifdef SYSLOG_NG_HAVE_ENVIRON
   gchar *lastargv = NULL;
   gchar **envp    = environ;
   gint i;
@@ -595,7 +597,6 @@ g_process_set_argv_space(gint argc, gchar **argv)
   for (i = 0; envp[i] != NULL; i++)
     environ[i] = g_strdup(envp[i]);
   environ[i] = NULL;
-#endif
 }
 
 /**
@@ -1132,15 +1133,13 @@ g_process_perform_startup(void)
 static void
 g_process_setproctitle(const gchar *proc_title)
 {
-#ifdef SYSLOG_NG_HAVE_ENVIRON
   size_t len;
 
   g_assert(process_opts.argv_start != NULL);
 
   len = g_strlcpy(process_opts.argv_start, proc_title, process_opts.argv_env_len);
   for (; len < process_opts.argv_env_len; ++len)
     process_opts.argv_start[len] = SPT_PADCHAR;
-#endif
 }
 
 
@@ -1526,7 +1525,6 @@ g_process_startup_ok(void)
 void
 g_process_finish(void)
 {
-#ifdef SYSLOG_NG_HAVE_ENVIRON
   /**
    * There is a memory leak for **environ and elements that should be
    * freed here theoretically.
@@ -1548,7 +1546,6 @@ g_process_finish(void)
    * As this leak does not cause any real problem like accumulating over
    * time, it is safe to leave it as it is.
   */
-#endif
 
   g_process_remove_pidfile();
 }

modules/darwinosl/CMakeLists.txt

@@ -1,4 +1,4 @@
-if(APPLE)
+if(ENABLE_OBJC AND ENABLE_DARWIN_OSL)
   set(CMAKE_OBJC_FLAGS "${CMAKE_OBJC_FLAGS} -fobjc-arc")
 
   # Take care, this must follow any compiler setting overrides! (e.g. set(CMAKE_OBJC_COMPILER clang) etc.)
@@ -19,35 +19,37 @@ if(APPLE)
     ${CMAKE_CURRENT_BINARY_DIR}/darwinosl-grammar.h
   )
 
-  include(CheckOBJCSourceCompiles)
-
-  # TODO: Once gcc was able to compile our ObjC code correctly we should add here a more sopgisticated check
-  check_objc_source_compiles("
-    #include <OSLog/OSLog.h>
-    int main(int, char**)
-    { return 0; }
-  " HAVE_OSLLOG)
-
-  module_switch(ENABLE_DARWIN_OSL "Enable Darwin OSLog source" HAVE_OSLLOG)
-
   if(ENABLE_DARWIN_OSL)
-    generate_y_from_ym(modules/darwinosl/darwinosl-grammar)
-
-    bison_target(DarwinOSLGrammar
-      ${CMAKE_CURRENT_BINARY_DIR}/darwinosl-grammar.y
-      ${CMAKE_CURRENT_BINARY_DIR}/darwinosl-grammar.c
-      COMPILE_FLAGS ${BISON_FLAGS})
-
-    add_module(
-      TARGET darwinosl
-      GRAMMAR darwinosl-grammar
-      SOURCES ${DARWINOSL_SOURCES}
-    )
-
-    target_link_libraries(darwinosl PRIVATE
-      "-framework Foundation"
-      "-framework OSLog"
-    )
-    target_link_options(darwinosl PRIVATE -ObjC)
+    include(CheckOBJCSourceCompiles)
+
+    # TODO: Once gcc was able to compile our ObjC code correctly we should add here a more sopgisticated check
+    check_objc_source_compiles("
+      #include <OSLog/OSLog.h>
+      int main(int, char**)
+      { return 0; }
+    " HAVE_OSLOG)
+
+    if(HAVE_OSLOG)
+      generate_y_from_ym(modules/darwinosl/darwinosl-grammar)
+
+      bison_target(DarwinOSLGrammar
+        ${CMAKE_CURRENT_BINARY_DIR}/darwinosl-grammar.y
+        ${CMAKE_CURRENT_BINARY_DIR}/darwinosl-grammar.c
+        COMPILE_FLAGS ${BISON_FLAGS})
+
+      add_module(
+        TARGET darwinosl
+        GRAMMAR darwinosl-grammar
+        SOURCES ${DARWINOSL_SOURCES}
+      )
+
+      target_link_libraries(darwinosl PRIVATE
+        "-framework Foundation"
+        "-framework OSLog"
+      )
+      target_link_options(darwinosl PRIVATE -ObjC)
+    else()
+      message(STATUS "OSLog is not supported on this system")
+    endif()
   endif()
 endif()

modules/geoip2/maxminddb-helper.c

@@ -22,6 +22,7 @@
 
 #include "maxminddb-helper.h"
 #include "scratch-buffers.h"
+#include "compat/inttypes.h"
 #include <logmsg/logmsg.h>
 #include <messages.h>
 

modules/grpc/otel/otel-protobuf-formatter.cpp

@@ -28,6 +28,7 @@
 #include "value-pairs/value-pairs.h"
 #include "scanner/list-scanner/list-scanner.h"
 #include "compat/cpp-end.h"
+#include "compat/inttypes.h"
 
 #include <syslog.h>
 

modules/grpc/otel/otel-protobuf-parser.cpp

@@ -31,8 +31,7 @@
 #include "str-repr/encode.h"
 #include "scratch-buffers.h"
 #include "compat/cpp-end.h"
-
-#include <inttypes.h>
+#include "compat/inttypes.h"
 
 using namespace syslogng::grpc::otel;
 using namespace google::protobuf;

packaging/debian/copyright

@@ -84,6 +84,7 @@ Files: lib/cache.*
        lib/compat/socket.h
        lib/compat/string.h
        lib/compat/strtok_r.c
+       lib/compat/inttypes.h
        lib/control/control-server.*
        lib/control/control-server-unix.c
        lib/hostname.h