Support for building sngrep using CMake added

CMakeLists.txt

@@ -0,0 +1,306 @@
+# CMakeLists file derived from configure.ac
+
+cmake_minimum_required( VERSION 3.7...3.27 )
+
+option( WITH_GNUTLS    "Enable SSL Support (TLS SIP Transport)"            no )
+option( WITH_OPENSSL   "Enable SSL Support (TLS SIP Transport)"            no )
+option( WITH_PCRE      "Enable Perl compatible regular expressions"        no )
+option( WITH_PCRE2     "Enable Perl compatible regular expressions (v2)"   no )
+option( WITH_ZLIB      "Enable zlib to support gzip compressed pcap files" no )
+option( ENABLE_UNICODE "Enable Ncurses Unicode support"                    no )
+option( ENABLE_IPV6    "Enable IPv6 Support"                               no )
+option( ENABLE_EEP     "Enable EEP/HEP Support"                            no )
+option( DISABLE_LOGO   "Disable Irontec Logo from Summary menu"            no )
+
+# Read parameters of AC_INIT() from file configure.ac
+file( STRINGS configure.ac AC_INIT REGEX "AC_INIT\\(.*\\)" )
+if( AC_INIT MATCHES "^.*AC_INIT\\( *\\[([^]]*)\\], *\\[([^]]*)\\], *\\[([^]]*)\\], *\\[([^]]*)\\], *\\[([^]]*)\\] *\\).*$" )
+	set( AC_PACKAGE_NAME "${CMAKE_MATCH_1}" )
+	set( AC_PACKAGE_VERSION "${CMAKE_MATCH_2}" )
+	set( AC_PACKAGE_STRING "${CMAKE_MATCH_1} ${CMAKE_MATCH_2}" )
+	set( AC_PACKAGE_BUGREPORT "${CMAKE_MATCH_3}" )
+	set( AC_PACKAGE_TARNAME "${CMAKE_MATCH_4}" )
+	set( AC_PACKAGE_URL "${CMAKE_MATCH_5}" )
+	message( STATUS "${AC_PACKAGE_STRING}" )
+else()
+	message( FATAL_ERROR "Error parsing AC_INIT(...) from file configure.ac" )
+endif()
+
+project( ${AC_PACKAGE_NAME}
+	VERSION ${AC_PACKAGE_VERSION}
+	LANGUAGES C
+	)
+
+add_executable( sngrep src/main.c )
+
+# Define _GNU_SOURCE etc.
+if( CMAKE_SYSTEM_NAME STREQUAL "Linux" )
+	target_compile_definitions( sngrep PRIVATE _GNU_SOURCE=1 )
+endif()
+
+# we might want to use this with zlib for compressed pcap support
+include( CheckFunctionExists )
+check_function_exists( fopencookie HAVE_FOPENCOOKIE )
+if( HAVE_FOPENCOOKIE )
+	target_compile_definitions( sngrep PRIVATE HAVE_FOPENCOOKIE=1 )
+endif()
+
+#######################################################################
+# Check for other REQUIRED libraries
+
+find_package( PkgConfig REQUIRED )
+pkg_check_modules( LIBPCAP REQUIRED IMPORTED_TARGET libpcap )
+target_link_libraries( sngrep PUBLIC pthread PkgConfig::LIBPCAP )
+
+####
+#### Ncurses Wide character support
+####
+if( ENABLE_UNICODE )
+	target_compile_definitions( sngrep PRIVATE WITH_UNICODE ) # Compile With Unicode compatibility
+
+	pkg_check_modules( NCURSES REQUIRED IMPORTED_TARGET ncursesw )
+	pkg_check_modules( PANEL REQUIRED IMPORTED_TARGET panelw )
+	pkg_check_modules( FORM REQUIRED IMPORTED_TARGET formw )
+	pkg_check_modules( MENU REQUIRED IMPORTED_TARGET menuw )
+else()
+	pkg_check_modules( NCURSES REQUIRED IMPORTED_TARGET ncurses )
+	pkg_check_modules( PANEL REQUIRED IMPORTED_TARGET panel )
+	pkg_check_modules( FORM REQUIRED IMPORTED_TARGET form )
+	pkg_check_modules( MENU REQUIRED IMPORTED_TARGET menu )
+endif()
+target_link_libraries( sngrep PUBLIC PkgConfig::NCURSES PkgConfig::PANEL PkgConfig::FORM PkgConfig::MENU )
+
+####
+#### GnuTLS Support
+####
+if( WITH_GNUTLS )
+	target_compile_definitions( sngrep PRIVATE WITH_GNUTLS ) # Compile With GnuTLS compatibility
+
+	pkg_check_modules( GNUTLS REQUIRED IMPORTED_TARGET gnutls )
+	find_library( GCRYPT gcrypt ) # Note: The use of "REQUIRED" here would need CMake 3.18...
+	if( NOT GCRYPT )              # ...therefore we check the result for ourself
+		message( FATAL_ERROR "You need to have libgcrypt installed to compile sngrep" )
+	endif()
+	target_link_libraries( sngrep PUBLIC pthread PkgConfig::GNUTLS gcrypt )
+endif()
+
+####
+#### OpenSSL Support
+####
+if( WITH_OPENSSL )
+	if( WITH_GNUTLS )
+		message( FATAL_ERROR "GnuTLS and OpenSSL can not be enabled at the same time" )
+	endif()
+
+	target_compile_definitions( sngrep PRIVATE WITH_OPENSSL ) # Compile With Openssl compatibility
+
+	pkg_check_modules( LIBSSL REQUIRED IMPORTED_TARGET libssl )
+	pkg_check_modules( LIBCRYPTO REQUIRED IMPORTED_TARGET libcrypto )
+	target_link_libraries( sngrep PUBLIC pthread PkgConfig::LIBSSL PkgConfig::LIBCRYPTO )
+endif()
+
+####
+#### PCRE Support
+####
+if( WITH_PCRE )
+	target_compile_definitions( sngrep PRIVATE WITH_PCRE ) # Compile With Perl Compatible regular expressions support
+
+	pkg_check_modules( LIBPCRE REQUIRED IMPORTED_TARGET libpcre )
+	target_link_libraries( sngrep PUBLIC pthread PkgConfig::LIBPCRE )
+endif()
+
+####
+#### PCRE2 Support
+####
+if( WITH_PCRE2 )
+	if( WITH_PCRE )
+		message( FATAL_ERROR "libpcre-2 and libpcre-3 can not be enabled at the same time" )
+	endif()
+
+	target_compile_definitions( sngrep PRIVATE WITH_PCRE2 ) # Compile With Perl Compatible regular expressions support
+	target_compile_definitions( sngrep PRIVATE PCRE2_CODE_UNIT_WIDTH=8 ) # Required for including pcre2.h
+
+	pkg_check_modules( LIBPCRE2 REQUIRED IMPORTED_TARGET libpcre2-8 )
+	target_link_libraries( sngrep PUBLIC pthread PkgConfig::LIBPCRE2 )
+endif()
+
+####
+#### IPv6 Support
+####
+if( ENABLE_IPV6 )
+	target_compile_definitions( sngrep PRIVATE USE_IPV6 ) # Compile With IPv6 support
+endif()
+
+####
+#### EEP Support
+####
+if( ENABLE_EEP )
+	target_compile_definitions( sngrep PRIVATE USE_EEP ) # Compile With EEP support
+endif()
+
+####
+#### zlib Support
+####
+if ( WITH_ZLIB )
+	target_compile_definitions( sngrep PRIVATE WITH_ZLIB ) # Compile With zlib support
+
+	pkg_check_modules( ZLIB REQUIRED IMPORTED_TARGET zlib )
+	target_link_libraries( sngrep PUBLIC pthread PkgConfig::ZLIB )
+endif()
+
+# Source inclusion
+target_sources( sngrep
+	PRIVATE
+		src/address.c
+		src/packet.c
+		src/sip.c
+		src/sip_call.c
+		src/sip_msg.c
+		src/sip_attr.c
+		src/option.c
+		src/group.c
+		src/filter.c
+		src/keybinding.c
+		src/media.c
+		src/setting.c
+		src/rtp.c
+		src/util.c
+		src/hash.c
+		src/vector.c
+	#
+		src/curses/ui_panel.c
+		src/curses/scrollbar.c
+		src/curses/ui_manager.c
+		src/curses/ui_call_list.c
+		src/curses/ui_call_flow.c
+		src/curses/ui_call_raw.c
+		src/curses/ui_stats.c
+		src/curses/ui_filter.c
+		src/curses/ui_save.c
+		src/curses/ui_msg_diff.c
+		src/curses/ui_column_select.c
+		src/curses/ui_settings.c
+	)
+
+target_include_directories( sngrep PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src )
+
+# Conditional Source inclusion
+target_sources( sngrep PRIVATE src/capture.c )
+if( WITH_GNUTLS )
+	target_sources( sngrep PRIVATE src/capture_gnutls.c )
+endif()
+if( WITH_OPENSSL )
+	target_sources( sngrep PRIVATE src/capture_openssl.c )
+endif()
+if( ENABLE_EEP )
+	target_sources( sngrep PRIVATE src/capture_eep.c )
+endif()
+
+######################################################################
+# Generate config.h
+
+file( WRITE ${CMAKE_CURRENT_BINARY_DIR}/config.h
+	"#define PACKAGE \"${PROJECT_NAME}\"\n"
+	"#define PACKAGE_BUGREPORT \"${CPACK_PACKAGE_CONTACT}\"\n"
+	"#define PACKAGE_NAME \"${PROJECT_NAME}\"\n"
+	"#define PACKAGE_STRING \"${PROJECT_NAME} ${PROJECT_VERSION}\"\n"
+	"#define PACKAGE_URL \"${PROJECT_HOMEPAGE_URL}\"\n"
+	"#define PACKAGE_VERSION \"${PROJECT_VERSION}\"\n"
+	"#define VERSION \"${PROJECT_VERSION}\"\n\n"
+	"#define CMAKE_CURRENT_BINARY_DIR \"${CMAKE_CURRENT_BINARY_DIR}\"\n" ) # CMAKE_CURRENT_BINARY_DIR is needed in tests/test_input.c
+
+target_include_directories( sngrep PRIVATE ${CMAKE_CURRENT_BINARY_DIR} )
+
+######################################################################
+# Installing
+
+include( GNUInstallDirs )
+
+install( TARGETS sngrep RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} )
+install( FILES config/sngreprc DESTINATION /etc )
+install( FILES doc/sngrep.8 DESTINATION ${CMAKE_INSTALL_MANDIR}/man8 )
+install( FILES README TODO COPYING ChangeLog DESTINATION "${CMAKE_INSTALL_DOCDIR}" )
+
+######################################################################
+# Packaging
+
+set( CPACK_PACKAGE_CONTACT "Ivan Alonso <kaian@irontec.com>" ) # ${AC_PACKAGE_BUGREPORT} only contains the E-Mail address, therefore we don't use it here
+set( CPACK_PACKAGE_HOMEPAGE_URL "${AC_PACKAGE_URL}" )
+set( CPACK_PACKAGE_VENDOR "Irontec S.L." )
+set( CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE" )
+set( CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README" )
+set( CPACK_STRIP_FILES TRUE )
+
+set( CPACK_PACKAGE_DESCRIPTION_SUMMARY "Ncurses SIP Messages flow viewer" )
+
+set( CPACK_PACKAGE_DESCRIPTION
+"sngrep displays SIP Messages grouped by Call-Id into flow
+diagrams. It can be used as an offline PCAP viewer or online
+capture using libpcap functions.
+
+It supports SIP UDP, TCP and TLS transports (when each message is
+delivered in one packet).
+
+You can also create new PCAP files from captures or displayed dialogs." )
+
+set( CPACK_DEBIAN_FILE_NAME DEB-DEFAULT )
+#set( CPACK_DEBIAN_PACKAGE_RELEASE 1 )
+set( CPACK_DEBIAN_PACKAGE_SECTION "comm" )
+set( CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON )
+
+set( CPACK_RPM_FILE_NAME RPM-DEFAULT )
+#set( CPACK_RPM_PACKAGE_RELEASE 1 )
+set( CPACK_RPM_PACKAGE_RELEASE_DIST ON )
+set( CPACK_RPM_PACKAGE_GROUP "Applications/Engineering" )
+set( CPACK_RPM_PACKAGE_LICENSE "GPLv3" )
+set( CPACK_RPM_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION}" )
+set( CPACK_RPM_PACKAGE_AUTOREQ YES )
+
+include( CPack )
+
+######################################################################
+# Print Logo
+
+if( NOT DISABLE_LOGO )
+	message( STATUS "" )
+	message( STATUS " ██╗██████╗  ██████╗ ███╗   ██╗████████╗███████╗ ██████╗" )
+	message( STATUS " ██║██╔══██╗██╔═══██╗████╗  ██║╚══██╔══╝██╔════╝██╔════╝" )
+	message( STATUS " ██║██████╔╝██║   ██║██╔██╗ ██║   ██║   █████╗  ██║     " )
+	message( STATUS " ██║██╔══██╗██║   ██║██║╚██╗██║   ██║   ██╔══╝  ██║     " )
+	message( STATUS " ██║██║  ██║╚██████╔╝██║ ╚████║   ██║   ███████╗╚██████╗" )
+	message( STATUS " ╚═╝╚═╝  ╚═╝ ╚═════╝ ╚═╝  ╚═══╝   ╚═╝   ╚══════╝ ╚═════╝" )
+endif()
+
+message( STATUS "" )
+message( STATUS "sngrep configure finished"                              )
+message( STATUS "======================================================" )
+message( STATUS "GnuTLS Support               : ${WITH_GNUTLS}"          )
+message( STATUS "OpenSSL Support              : ${WITH_OPENSSL}"         )
+message( STATUS "Unicode Support              : ${ENABLE_UNICODE}"       )
+message( STATUS "Perl Expressions Support     : ${WITH_PCRE}"            )
+message( STATUS "Perl Expressions Support (v2): ${WITH_PCRE2}"           )
+message( STATUS "IPv6 Support                 : ${ENABLE_IPV6}"          )
+message( STATUS "EEP Support                  : ${ENABLE_EEP}"           )
+message( STATUS "Zlib Support                 : ${WITH_ZLIB}"            )
+message( STATUS "======================================================" )
+message( STATUS "" )
+
+######################################################################
+# Tests
+
+enable_testing()            # "ctest" will run all tests
+add_custom_target( tests )  # "make tests" will build all tests
+
+foreach( i 001 002 003 004 005 006 007 008 009 010 011 )
+	add_executable( test_${i} EXCLUDE_FROM_ALL tests/test_${i}.c )
+	if( i STREQUAL "007" )
+		target_sources( test_${i} PUBLIC src/vector.c src/util.c )
+	elseif( i STREQUAL "010" )
+		target_sources( test_${i} PUBLIC src/hash.c )
+	endif()
+	target_include_directories( test_${i} PRIVATE ${CMAKE_CURRENT_BINARY_DIR} )
+
+	add_test( NAME test_${i} COMMAND ${CMAKE_CURRENT_BINARY_DIR}/test_${i} WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tests )
+	add_dependencies( tests test_${i} )
+endforeach()
+

README

@@ -48,6 +48,27 @@ You can pass following flags to ./configure to enable some features
 | `--enable-ipv6`   | Enable IPv6 packet capture support. |
 | `--enable-eep`   | Enable EEP packet send/receive support. |
 
+Instead of using autotools, sngrep could be build with CMake, e.g.:
+
+    mkdir build && cd build
+    cmake [<options>] ..
+    make
+    make install (as root)
+
+You can pass following options to cmake to enable some features
+
+| CMake option | Feature |
+| ------------- | ------------- |
+| `-D WITH_OPENSSL` | Adds OpenSSL support to parse TLS captured messages (req. libssl)  |
+| `-D WITH_GNUTLS` | Adds GnuTLS support to parse TLS captured messages (req. gnutls)  |
+| `-D WITH_PCRE`|  Adds Perl Compatible regular expressions support in regexp fields |
+| `-D WITH_ZLIB`|  Enable zlib to support gzip compressed pcap files |
+| `-D ENABLE_UNICODE` | Adds Ncurses UTF-8/Unicode support (req. libncursesw5) |
+| `-D ENABLE_IPV6` | Enable IPv6 packet capture support |
+| `-D ENABLE_EEP` | Enable EEP packet send/receive support |
+| `-D CPACK_GENERATOR=DEB` | `make package` builds a Debian package |
+| `-D CPACK_GENERATOR=RPM` | `make package` builds a RPM package |
+
 You can find [detailed instructions for some distributions](https://github.com/irontec/sngrep/wiki/Building) on wiki.
 
 ## Usage

tests/test_input.c

@@ -68,7 +68,11 @@ main()
     } else if (child == 0) {
         // Child process, run sngrep with test pcap
         dup2(ppipe[0], STDIN_FILENO);
+#ifdef CMAKE_CURRENT_BINARY_DIR
+	char *argv[] = { CMAKE_CURRENT_BINARY_DIR "/sngrep", "-I", TEST_PCAP_INPUT, 0 };
+#else
         char *argv[] = { "../src/sngrep", "-I", TEST_PCAP_INPUT, 0 };
+#endif
         execv(argv[0], argv);
     } else {
         // Parent process, send keys to child stdin