diff options
Diffstat (limited to 'lib/libpcap/libpcap/CMakeLists.txt')
| -rw-r--r-- | lib/libpcap/libpcap/CMakeLists.txt | 2371 |
1 files changed, 2371 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/CMakeLists.txt b/lib/libpcap/libpcap/CMakeLists.txt new file mode 100644 index 0000000..b26e273 --- /dev/null +++ b/lib/libpcap/libpcap/CMakeLists.txt @@ -0,0 +1,2371 @@ +cmake_minimum_required(VERSION 2.8.6) + +# +# Apple doesn't build with an install_name starting with @rpath, and +# neither do we with autotools; don't do so with CMake, either, and +# suppress warnings about that. +# +if(POLICY CMP0042) + cmake_policy(SET CMP0042 OLD) +endif() + +set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules) + +project(pcap) + +# +# Try to enable as many C99 features as we can. +# At minimum, we want C++/C99-style // comments. +# +# Newer versions of compilers might default to supporting C99, but older +# versions may require a special flag. +# +# Prior to CMake 3.1, setting CMAKE_C_STANDARD will not have any effect, +# so, unless and until we require CMake 3.1 or later, we have to do it +# ourselves on pre-3.1 CMake, so we just do it ourselves on all versions +# of CMake. +# +# Note: with CMake 3.1 through 3.5, the only compilers for which CMake +# handles CMAKE_C_STANDARD are GCC and Clang. 3.6 adds support only +# for Intel C; 3.9 adds support for PGI C, Sun C, and IBM XL C, and +# 3.10 adds support for Cray C and IAR C, but no version of CMake has +# support for HP C. Therefore, even if we use CMAKE_C_STANDARD with +# compilers for which CMake supports it, we may still have to do it +# ourselves on other compilers. +# +# See the CMake documentation for the CMAKE_<LANG>_COMPILER_ID variables +# for a list of compiler IDs. +# +# We don't worry about MSVC; it doesn't have such a flag - either it +# doesn't support the C99 features we need at all, or it supports them +# regardless of the compiler flag. +# +# XXX - this just tests whether the option works and adds it if it does. +# We don't test whether it's necessary in order to get the C99 features +# that we use; if we ever have a user who tries to compile with a compiler +# that can't be made to support those features, we can add a test to make +# sure we actually *have* C99 support. +# +include(CheckCCompilerFlag) +macro(check_and_add_compiler_option _option) + message(STATUS "Checking C compiler flag ${_option}") + string(REPLACE "=" "-" _temp_option_variable ${_option}) + string(REGEX REPLACE "^-" "" _option_variable ${_temp_option_variable}) + check_c_compiler_flag("${_option}" ${_option_variable}) + if(${${_option_variable}}) + set(C_ADDITIONAL_FLAGS "${C_ADDITIONAL_FLAGS} ${_option}") + endif() +endmacro() + +set(C_ADDITIONAL_FLAGS "") +if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR + CMAKE_C_COMPILER_ID MATCHES "Clang") + check_and_add_compiler_option("-std=gnu99") +elseif(CMAKE_C_COMPILER_ID MATCHES "XL") + # + # We want support for extensions picked up for GNU C compatibility, + # so we use -qlanglvl=extc99. + # + check_and_add_compiler_option("-qlanglvl=extc99") +elseif(CMAKE_C_COMPILER_ID MATCHES "HP") + check_and_add_compiler_option("-AC99") +elseif(CMAKE_C_COMPILER_ID MATCHES "Sun") + check_and_add_compiler_option("-xc99") +elseif(CMAKE_C_COMPILER_ID MATCHES "Intel") + check_and_add_compiler_option("-c99") +endif() + +# +# Build all runtimes in the top-level binary directory; that way, +# on Windows, the executables will be in the same directory as +# the DLLs, so the system will find pcap.dll when any of the +# executables are run. +# +set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/run) + +################################################################### +# Parameters +################################################################### + +if(WIN32) + # + # On Windows, allow the library name to be overridden, for the + # benefit of projects that combine libpcap with their own + # kernel-mode code to support capturing. + # + set(LIBRARY_NAME pcap CACHE STRING "Library name") +else() + # + # On UN*X, it's always been libpcap. + # + set(LIBRARY_NAME pcap) +endif() + +option(INET6 "Enable IPv6" ON) +if(WIN32) + option(USE_STATIC_RT "Use static Runtime" ON) +endif(WIN32) +option(BUILD_SHARED_LIBS "Build shared libraries" ON) +if(WIN32) + set(PACKET_DLL_DIR "" CACHE PATH "Path to directory with include and lib subdirectories for packet.dll") +endif(WIN32) + +# To pacify those who hate the protochain instruction +option(NO_PROTOCHAIN "Disable protochain instruction" OFF) + +# +# Start out with the capture mechanism type unspecified; the user +# can explicitly specify it and, if they don't, we'll pick an +# appropriate one. +# +set(PCAP_TYPE "" CACHE STRING "Packet capture type") + +# +# Default to having remote capture support on Windows and, for now, to +# not having it on UN*X. +# +if(WIN32) + option(ENABLE_REMOTE "Enable remote capture" ON) +else() + option(ENABLE_REMOTE "Enable remote capture" OFF) +endif(WIN32) + +if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + option(PCAP_SUPPORT_PACKET_RING "Enable Linux packet ring support" ON) + option(BUILD_WITH_LIBNL "Build with libnl" ON) +endif() + +# +# Additional capture modules. +# +option(DISABLE_USB "Disable USB sniffing support" OFF) +option(DISABLE_BLUETOOTH "Disable Bluetooth sniffing support" OFF) +option(DISABLE_NETMAP "Disable netmap support" OFF) +# +# We don't support D-Bus sniffing on macOS; see +# +# https://bugs.freedesktop.org/show_bug.cgi?id=74029 +# +if(APPLE) + option(DISABLE_DBUS "Disable D-Bus sniffing support" ON) +else(APPLE) + option(DISABLE_DBUS "Disable D-Bus sniffing support" OFF) +endif(APPLE) +option(DISABLE_RDMA "Disable RDMA sniffing support" OFF) + +option(DISABLE_DAG "Disable Endace DAG card support" OFF) + +option(DISABLE_SEPTEL "Disable Septel card support" OFF) +set(SEPTEL_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../septel" CACHE PATH "Path to directory with include and lib subdirectories for Septel API") + +option(DISABLE_SNF "Disable Myricom SNF support" OFF) + +option(DISABLE_TC "Disable Riverbed TurboCap support" OFF) + +# +# Debugging options. +# +option(BDEBUG "Build optimizer debugging code" OFF) +option(YYDEBUG "Build parser debugging code" OFF) + +################################################################### +# Versioning +################################################################### + +# Get, parse, format and set pcap's version string from [pcap_root]/VERSION +# for later use. + +# Get MAJOR, MINOR, PATCH & SUFFIX +file(STRINGS ${pcap_SOURCE_DIR}/VERSION + PACKAGE_VERSION + LIMIT_COUNT 1 # Read only the first line +) + +# Get "just" MAJOR +string(REGEX MATCH "^([0-9]+)" PACKAGE_VERSION_MAJOR "${PACKAGE_VERSION}") + +# Get MAJOR, MINOR & PATCH +string(REGEX MATCH "^([0-9]+.)?([0-9]+.)?([0-9]+)" PACKAGE_VERSION_NOSUFFIX "${PACKAGE_VERSION}") + +if(WIN32) + # Convert PCAP_VERSION_NOSUFFIX to Windows preferred version format + string(REPLACE "." "," PACKAGE_VERSION_PREDLL ${PACKAGE_VERSION_NOSUFFIX}) + + # Append NANO (used for Windows internal versioning) to PCAP_VERSION_PREDLL + # 0 means unused. + set(PACKAGE_VERSION_DLL ${PACKAGE_VERSION_PREDLL},0) +endif(WIN32) + +set(PACKAGE_NAME "${LIBRARY_NAME}") +set(PACKAGE_STRING "${LIBRARY_NAME} ${PACKAGE_VERSION}") + +###################################### +# Project settings +###################################### + +add_definitions(-DHAVE_CONFIG_H) + +include_directories( + ${CMAKE_CURRENT_BINARY_DIR} + ${pcap_SOURCE_DIR} +) + +include(CheckFunctionExists) +include(CMakePushCheckState) +include(CheckSymbolExists) + +if(WIN32) + + if(IS_DIRECTORY ${CMAKE_HOME_DIRECTORY}/../../Common) + include_directories(${CMAKE_HOME_DIRECTORY}/../../Common) + endif(IS_DIRECTORY ${CMAKE_HOME_DIRECTORY}/../../Common) + + find_package(Packet) + if(PACKET_FOUND) + set(HAVE_PACKET32 TRUE) + include_directories(${PACKET_INCLUDE_DIRS}) + # + # Check whether we have the NPcap PacketIsLoopbackAdapter() + # function. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES ${PACKET_LIBRARIES}) + check_function_exists(PacketIsLoopbackAdapter HAVE_PACKET_IS_LOOPBACK_ADAPTER) + cmake_pop_check_state() + endif(PACKET_FOUND) + + message(STATUS "checking for Npcap's version.h") + check_symbol_exists(WINPCAP_PRODUCT_NAME "../../version.h" HAVE_VERSION_H) + if(HAVE_VERSION_H) + message(STATUS "HAVE version.h") + else(HAVE_VERSION_H) + message(STATUS "MISSING version.h") + endif(HAVE_VERSION_H) + +endif(WIN32) + +if(MSVC) + add_definitions(-D__STDC__) + add_definitions(-D_CRT_SECURE_NO_WARNINGS) +endif(MSVC) + +if(USE_STATIC_RT) + message(STATUS "Use STATIC runtime") + if(MSVC) + foreach(RT_FLAG + CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE + CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO + CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE + CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) + string(REGEX REPLACE "/MD" "/MT" ${RT_FLAG} "${${RT_FLAG}}") + endforeach(RT_FLAG) + elseif(MINGW) + set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -static-libgcc") + endif() +else (USE_STATIC_RT) + message(STATUS "Use DYNAMIC runtime") +endif(USE_STATIC_RT) + +################################################################### +# Detect available platform features +################################################################### + +include(CheckIncludeFile) +include(CheckIncludeFiles) +include(CheckStructHasMember) +include(CheckTypeSize) + +# +# Tests are a bit expensive with Visual Studio on Windows, so, on +# Windows, we skip tests for UN*X-only headers and functions. +# + +# +# Header files. +# +check_include_file(inttypes.h HAVE_INTTYPES_H) +check_include_file(stdint.h HAVE_STDINT_H) +check_include_file(unistd.h HAVE_UNISTD_H) +if(NOT HAVE_UNISTD_H) + add_definitions(-DYY_NO_UNISTD_H) +endif(NOT HAVE_UNISTD_H) +check_include_file(bitypes.h HAVE_SYS_BITYPES_H) +if(NOT WIN32) + check_include_file(sys/ioccom.h HAVE_SYS_IOCCOM_H) + check_include_file(sys/sockio.h HAVE_SYS_SOCKIO_H) + check_include_file(sys/select.h HAVE_SYS_SELECT_H) +endif(NOT WIN32) +check_include_file(limits.h HAVE_LIMITS_H) +if(NOT WIN32) + check_include_file(netpacket/packet.h HAVE_NETPACKET_PACKET_H) + check_include_files("sys/types.h;sys/socket.h;net/if.h;net/pfvar.h" HAVE_NET_PFVAR_H) + if(HAVE_NET_PFVAR_H) + # + # Check for various PF actions. + # + check_c_source_compiles( +"#include <sys/types.h> +#include <sys/socket.h> +#include <net/if.h> +#include <net/pfvar.h> + +int +main(void) +{ + return PF_NAT+PF_NONAT+PF_BINAT+PF_NOBINAT+PF_RDR+PF_NORDR; +} +" + HAVE_PF_NAT_THROUGH_PF_NORDR) + endif(HAVE_NET_PFVAR_H) + check_include_file(netinet/if_ether.h HAVE_NETINET_IF_ETHER_H) + if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + check_include_file(linux/sockios.h HAVE_LINUX_SOCKIOS_H) + # + # linux/if_bonding.h requires sys/socket.h. + # + check_include_files("sys/socket.h;linux/if_bonding.h" HAVE_LINUX_IF_BONDING_H) + endif() +endif(NOT WIN32) + +# +# Functions. +# +check_function_exists(strerror HAVE_STRERROR) +check_function_exists(strerror_r HAVE_STRERROR_R) +if(HAVE_STRERROR_R) + # + # We have strerror_r; if we define _GNU_SOURCE, is it a + # POSIX-compliant strerror_r() or a GNU strerror_r()? + # + check_c_source_compiles( +"#define _GNU_SOURCE +#include <string.h> + +/* Define it GNU-style; that will cause an error if it's not GNU-style */ +extern char *strerror_r(int, char *, size_t); + +int +main(void) +{ + return 0; +} +" + HAVE_GNU_STRERROR_R) + if(NOT HAVE_GNU_STRERROR_R) + set(HAVE_POSIX_STRERROR_R YES) + endif(NOT HAVE_GNU_STRERROR_R) +else(HAVE_STRERROR_R) + # + # We don't have strerror_r; do we have strerror_s? + # + check_function_exists(strerror_s HAVE_STRERROR_S) +endif(HAVE_STRERROR_R) +check_function_exists(strlcpy HAVE_STRLCPY) +check_function_exists(strlcat HAVE_STRLCAT) +check_function_exists(snprintf HAVE_SNPRINTF) +check_function_exists(vsnprintf HAVE_VSNPRINTF) +check_function_exists(asprintf HAVE_ASPRINTF) +check_function_exists(vasprintf HAVE_VASPRINTF) +check_function_exists(strtok_r HAVE_STRTOK_R) +if(NOT WIN32) + check_function_exists(vsyslog HAVE_VSYSLOG) +endif() + +# +# These tests are for network applications that need socket functions +# and getaddrinfo()/getnameinfo()-ish functions. We now require +# getaddrinfo() and getnameinfo(). On UN*X systems, we also prefer +# versions of recvmsg() that conform to the Single UNIX Specification, +# so that we can check whether a datagram received with recvmsg() was +# truncated when received due to the buffer being too small. +# +# On Windows, getaddrinfo() is in the ws2_32 library. + +# On most UN*X systems, they're available in the system library. +# +# Under Solaris, we need to link with libsocket and libnsl to get +# getaddrinfo() and getnameinfo() and, if we have libxnet, we need to +# link with libxnet before libsocket to get a version of recvmsg() +# that conforms to the Single UNIX Specification. +# +# We use getaddrinfo() because we want a portable thread-safe way +# of getting information for a host name or port; there exist _r +# versions of gethostbyname() and getservbyname() on some platforms, +# but not on all platforms. +# +# NOTE: if you hand check_library_exists as its last argument a variable +# that's been set, it skips the test, so we need different variables. +# +set(PCAP_LINK_LIBRARIES "") +include(CheckLibraryExists) +if(WIN32) + # + # We need winsock2.h and ws2tcpip.h. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES ws2_32) + check_symbol_exists(getaddrinfo "winsock2.h;ws2tcpip.h" LIBWS2_32_HAS_GETADDRINFO) + cmake_pop_check_state() + if(LIBWS2_32_HAS_GETADDRINFO) + set(PCAP_LINK_LIBRARIES ws2_32 ${PCAP_LINK_LIBRARIES}) + else(LIBWS2_32_HAS_GETADDRINFO) + message(FATAL_ERROR "getaddrinfo is required, but wasn't found") + endif(LIBWS2_32_HAS_GETADDRINFO) +else(WIN32) + # + # UN*X. First try the system libraries, then try the libraries + # for Solaris and possibly other systems that picked up the + # System V library split. + # + check_function_exists(getaddrinfo STDLIBS_HAVE_GETADDRINFO) + if(NOT STDLIBS_HAVE_GETADDRINFO) + # + # Not found in the standard system libraries. + # Try libsocket, which requires libnsl. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES nsl) + check_library_exists(socket getaddrinfo "" LIBSOCKET_HAS_GETADDRINFO) + cmake_pop_check_state() + if(LIBSOCKET_HAS_GETADDRINFO) + # + # OK, we found it in libsocket. + # + set(PCAP_LINK_LIBRARIES socket nsl ${PCAP_LINK_LIBRARIES}) + else(LIBSOCKET_HAS_GETADDRINFO) + # + # We didn't find it. + # + message(FATAL_ERROR "getaddrinfo is required, but wasn't found") + endif(LIBSOCKET_HAS_GETADDRINFO) + + # + # OK, do we have recvmsg() in libxnet? + # We also link with libsocket and libnsl. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES socket nsl) + check_library_exists(xnet recvmsg "" LIBXNET_HAS_RECVMSG) + cmake_pop_check_state() + if(LIBXNET_HAS_RECVMSG) + # + # Yes - link with it as well. + # + set(PCAP_LINK_LIBRARIES xnet ${PCAP_LINK_LIBRARIES}) + endif(LIBXNET_HAS_RECVMSG) + endif(NOT STDLIBS_HAVE_GETADDRINFO) + + # DLPI needs putmsg under HPUX so test for -lstr while we're at it + check_function_exists(putmsg STDLIBS_HAVE_PUTMSG) + if(NOT STDLIBS_HAVE_PUTMSG) + check_library_exists(str putmsg "" LIBSTR_HAS_PUTMSG) + if(LIBSTR_HAS_PUTMSG) + set(PCAP_LINK_LIBRARIES str ${PCAP_LINK_LIBRARIES}) + endif(LIBSTR_HAS_PUTMSG) + endif(NOT STDLIBS_HAVE_PUTMSG) +endif(WIN32) + +# +# Check for reentrant versions of getnetbyname_r(), as provided by +# Linux (glibc), Solaris/IRIX, and AIX (with three different APIs!). +# If we don't find one, we just use getnetbyname(), which uses +# thread-specific data on many platforms, but doesn't use it on +# NetBSD or OpenBSD, and may not use it on older versions of other +# platforms. +# +# Only do the check if we have a declaration of getnetbyname_r(); +# without it, we can't check which API it has. (We assume that +# if there's a declaration, it has a prototype, so that the API +# can be checked.) +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${PCAP_LINK_LIBRARIES}) +check_symbol_exists(getnetbyname_r netdb.h NETDB_H_DECLARES_GETNETBYNAME_R) +if(NETDB_H_DECLARES_GETNETBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct netent netent_buf; + char buf[1024]; + struct netent *resultp; + int h_errnoval; + + return getnetbyname_r((const char *)0, &netent_buf, buf, sizeof buf, &resultp, &h_errnoval); +} +" + HAVE_LINUX_GETNETBYNAME_R) + if(NOT HAVE_LINUX_GETNETBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct netent netent_buf; + char buf[1024]; + + return getnetbyname_r((const char *)0, &netent_buf, buf, (int)sizeof buf) != NULL; +} +" + HAVE_SOLARIS_IRIX_GETNETBYNAME_R) + if(NOT HAVE_SOLARIS_IRIX_GETNETBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct netent netent_buf; + struct netent_data net_data; + + return getnetbyname_r((const char *)0, &netent_buf, &net_data); +} +" + HAVE_AIX_GETNETBYNAME_R) + endif(NOT HAVE_SOLARIS_IRIX_GETNETBYNAME_R) + endif(NOT HAVE_LINUX_GETNETBYNAME_R) +endif(NETDB_H_DECLARES_GETNETBYNAME_R) +cmake_pop_check_state() + +# +# Check for reentrant versions of getprotobyname_r(), as provided by +# Linux (glibc), Solaris/IRIX, and AIX (with three different APIs!). +# If we don't find one, we just use getprotobyname(), which uses +# thread-specific data on many platforms, but doesn't use it on +# NetBSD or OpenBSD, and may not use it on older versions of other +# platforms. +# +# Only do the check if we have a declaration of getprotobyname_r(); +# without it, we can't check which API it has. (We assume that +# if there's a declaration, it has a prototype, so that the API +# can be checked.) +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${PCAP_LINK_LIBRARIES}) +check_symbol_exists(getprotobyname_r netdb.h NETDB_H_DECLARES_GETPROTOBYNAME_R) +if(NETDB_H_DECLARES_GETPROTOBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct protoent protoent_buf; + char buf[1024]; + struct protoent *resultp; + + return getprotobyname_r((const char *)0, &protoent_buf, buf, sizeof buf, &resultp); +} +" + HAVE_LINUX_GETPROTOBYNAME_R) + if(NOT HAVE_LINUX_GETPROTOBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct protoent protoent_buf; + char buf[1024]; + + return getprotobyname_r((const char *)0, &protoent_buf, buf, (int)sizeof buf) != NULL; +} +" + HAVE_SOLARIS_IRIX_GETPROTOBYNAME_R) + if(NOT HAVE_SOLARIS_IRIX_GETPROTOBYNAME_R) + check_c_source_compiles( +"#include <netdb.h> + +int +main(void) +{ + struct protoent protoent_buf; + struct protoent_data proto_data; + + return getprotobyname_r((const char *)0, &protoent_buf, &proto_data); +} +" + HAVE_AIX_GETPROTOBYNAME_R) + endif(NOT HAVE_SOLARIS_IRIX_GETPROTOBYNAME_R) + endif(NOT HAVE_LINUX_GETPROTOBYNAME_R) +endif(NETDB_H_DECLARES_GETPROTOBYNAME_R) +cmake_pop_check_state() + +# +# Data types. +# +# XXX - there's no check_type() macro that's like check_type_size() +# except that it only checks for the existence of the structure type, +# so we use check_type_size() and ignore the size. +# +cmake_push_check_state() +if(WIN32) + set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h) +else(WIN32) + set(CMAKE_EXTRA_INCLUDE_FILES unistd.h sys/socket.h) +endif(WIN32) +check_type_size("struct sockaddr_storage" STRUCT_SOCKADDR_STORAGE) +check_type_size("socklen_t" SOCKLEN_T) +cmake_pop_check_state() + +# +# Structure fields. +# +if(WIN32) + check_struct_has_member("struct sockaddr" sa_len winsock2.h HAVE_STRUCT_SOCKADDR_SA_LEN) +else(WIN32) + check_struct_has_member("struct sockaddr" sa_len sys/socket.h HAVE_STRUCT_SOCKADDR_SA_LEN) +endif(WIN32) + +# +# Do we have ffs(), and is it declared in <strings.h>? +# +check_function_exists(ffs HAVE_FFS) +if(HAVE_FFS) + # + # OK, we have ffs(). Is it declared in <strings.h>? + # + # This test fails if we don't have <strings.h> or if we do + # but it doesn't declare ffs(). + # + check_symbol_exists(ffs strings.h STRINGS_H_DECLARES_FFS) +endif() + +# +# This requires the libraries that we require, as ether_hostton might be +# in one of those libraries. That means we have to do this after +# we check for those libraries. +# +# You are in a twisty little maze of UN*Xes, all different. +# Some might not have ether_hostton(). +# Some might have it and declare it in <net/ethernet.h>. +# Some might have it and declare it in <netinet/ether.h> +# Some might have it and declare it in <sys/ethernet.h>. +# Some might have it and declare it in <arpa/inet.h>. +# Some might have it and declare it in <netinet/if_ether.h>. +# Some might have it and not declare it in any header file. +# +# Before you is a C compiler. +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${PCAP_LINK_LIBRARIES}) +check_function_exists(ether_hostton HAVE_ETHER_HOSTTON) +if(HAVE_ETHER_HOSTTON) + # + # OK, we have ether_hostton(). Is it declared in <net/ethernet.h>? + # + # This test fails if we don't have <net/ethernet.h> or if we do + # but it doesn't declare ether_hostton(). + # + check_symbol_exists(ether_hostton net/ethernet.h NET_ETHERNET_H_DECLARES_ETHER_HOSTTON) + if(NET_ETHERNET_H_DECLARES_ETHER_HOSTTON) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_HOSTTON TRUE) + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_HOSTTON) + # + # No - how about <netinet/ether.h>, as on Linux? + # + # This test fails if we don't have <netinet/ether.h> + # or if we do but it doesn't declare ether_hostton(). + # + check_symbol_exists(ether_hostton netinet/ether.h NETINET_ETHER_H_DECLARES_ETHER_HOSTTON) + if(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_HOSTTON TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_HOSTTON) + # + # No - how about <sys/ethernet.h>, as on Solaris 10 and later? + # + # This test fails if we don't have <sys/ethernet.h> + # or if we do but it doesn't declare ether_hostton(). + # + check_symbol_exists(ether_hostton sys/ethernet.h SYS_ETHERNET_H_DECLARES_ETHER_HOSTTON) + if(SYS_ETHERNET_H_DECLARES_ETHER_HOSTTON) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_HOSTTON TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_HOSTTON) + # + # No, how about <arpa/inet.h>, as on AIX? + # + # This test fails if we don't have <arpa/inet.h> + # or if we do but it doesn't declare ether_hostton(). + # + check_symbol_exists(ether_hostton arpa/inet.h ARPA_INET_H_DECLARES_ETHER_HOSTTON) + if(ARPA_INET_H_DECLARES_ETHER_HOSTTON) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_HOSTTON TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_HOSTTON) + # + # No, how about <netinet/if_ether.h>? + # On some platforms, it requires <net/if.h> and + # <netinet/in.h>, and we always include it with + # both of them, so test it with both of them. + # + # This test fails if we don't have <netinet/if_ether.h> + # and the headers we include before it, or if we do but + # <netinet/if_ether.h> doesn't declare ether_hostton(). + # + check_symbol_exists(ether_hostton "sys/types.h;sys/socket.h;net/if.h;netinet/in.h;netinet/if_ether.h" NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON) + if(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_HOSTTON TRUE) + endif() + endif() + # + # After all that, is ether_hostton() declared? + # + if(NOT HAVE_DECL_ETHER_HOSTTON) + # + # No, we'll have to declare it ourselves. + # Do we have "struct ether_addr" if we include <netinet/if_ether.h>? + # + # XXX - there's no check_type() macro that's like check_type_size() + # except that it only checks for the existence of the structure type, + # so we use check_type_size() and ignore the size. + # + cmake_push_check_state() + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h sys/socket.h net/if.h netinet/in.h netinet/if_ether.h) + check_type_size("struct ether_addr" STRUCT_ETHER_ADDR) + cmake_pop_check_state() + endif() +endif() +cmake_pop_check_state() + +# +# Large file support on UN*X, a/k/a LFS. +# +if(NOT WIN32) + include(FindLFS) + if(LFS_FOUND) + # + # Add the required #defines. + # + add_definitions(${LFS_DEFINITIONS}) + endif() + + # + # Check for fseeko as well. + # + include(FindFseeko) + if(FSEEKO_FOUND) + set(HAVE_FSEEKO ON) + + # + # Add the required #defines. + # + add_definitions(${FSEEKO_DEFINITIONS}) + endif() +endif() + +if(INET6) + message(STATUS "Support IPv6") +endif(INET6) + +# +# Pthreads. +# We might need them, because some libraries we use might use them, +# but we don't necessarily need them. +# That's only on UN*X; on Windows, if they use threads, we assume +# they're native Windows threads. +# +if(NOT WIN32) + set(CMAKE_THREAD_PREFER_PTHREAD ON) + find_package(Threads) + if(NOT CMAKE_USE_PTHREADS_INIT) + # + # If it's not pthreads, we won't use it; we use it for libraries + # that require it. + # + set(CMAKE_THREAD_LIBS_INIT "") + endif(NOT CMAKE_USE_PTHREADS_INIT) +endif(NOT WIN32) + +###################################### +# Input files +###################################### + +set(PROJECT_SOURCE_LIST_C + bpf_dump.c + bpf_filter.c + bpf_image.c + etherent.c + fmtutils.c + gencode.c + nametoaddr.c + optimize.c + pcap-common.c + pcap.c + savefile.c + sf-pcapng.c + sf-pcap.c +) + +if(WIN32) + # + # For now, we assume we don't have snprintf() or that it's not one + # that behaves enough like C99's snprintf() for our purposes (i.e., + # it doesn't null-terminate the string if it truncates it to fit in + # the buffer), so we have to provide our own (a wrapper around + # _snprintf() that null-terminates the buffer). + # + # We also assume we don't have asprintf(), and provide an implementation + # that uses _vscprintf() to determine how big the string needs to be. + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} + missing/win_snprintf.c missing/win_asprintf.c) +else() + # + # Either: + # + # we have snprintf() and vsnprintf(), and have asprintf() and + # vasprintf(); + # + # we have snprintf() and vsnprintf(), but don't have asprintf() + # or vasprintf(); + # + # we have neither snprintf() nor vsnprintf(), and don't have + # asprintf() or vasprintf(), either. + # + # We assume that if we have asprintf() we have vasprintf(), as well + # as snprintf() and vsnprintf(), and that if we have snprintf() we + # have vsnprintf(). + # + # For the first case, we don't need any replacement routines. + # For the second case, we need replacement asprintf()/vasprintf() + # routines. + # For the third case, we need replacement snprintf()/vsnprintf() and + # asprintf()/vasprintf() routines. + # + if(NOT HAVE_SNPRINTF) + # + # We assume we have none of them; missing/snprintf.c supplies + # all of them. + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} missing/snprintf.c) + elif(NOT HAVE_ASPRINTF) + # + # We assume we have snprintf()/vsnprintf() but lack + # asprintf()/vasprintf(); missing/asprintf.c supplies + # the latter (using vsnprintf()). + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} missing/asprintf.c) + endif() + if(NOT HAVE_STRLCAT) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} missing/strlcat.c) + endif(NOT HAVE_STRLCAT) + if(NOT HAVE_STRLCPY) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} missing/strlcpy.c) + endif(NOT HAVE_STRLCPY) + if(NOT HAVE_STRTOK_R) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} missing/strtok_r.c) + endif(NOT HAVE_STRTOK_R) +endif(WIN32) + +# +# Determine the main pcap-XXX.c file to use, and the libraries with +# which we need to link libpcap, if any. +# +if(WIN32) + # + # Windows. + # + # Has the user explicitly specified a capture type? + # + if(PCAP_TYPE STREQUAL "") + # + # The user didn't explicitly specify a capture mechanism. + # Check whether we have packet.dll. + # + if(HAVE_PACKET32) + # + # We have packet.dll. + # Set the capture type to NPF. + # + set(PCAP_TYPE npf) + else() + # + # We don't have any capture type we know about, so just use + # the null capture type, and only support reading (and writing) + # capture files. + # + set(PCAP_TYPE null) + endif() + endif() +else() + # + # UN*X. + # + # Figure out what type of packet capture mechanism we have, and + # what libraries we'd need to link libpcap with, if any. + # + + # + # Has the user explicitly specified a capture type? + # + if(PCAP_TYPE STREQUAL "") + # + # Check for a bunch of headers for various packet capture mechanisms. + # + check_include_files("sys/types.h;net/bpf.h" HAVE_NET_BPF_H) + if(HAVE_NET_BPF_H) + # + # Does it define BIOCSETIF? + # I.e., is it a header for an LBL/BSD-style capture + # mechanism, or is it just a header for a BPF filter + # engine? Some versions of Arch Linux, for example, + # have a net/bpf.h that doesn't define BIOCSETIF; + # as it's a Linux, it should use packet sockets, + # instead. + # + # We need: + # + # sys/types.h, because FreeBSD 10's net/bpf.h + # requires that various BSD-style integer types + # be defined; + # + # sys/time.h, because AIX 5.2 and 5.3's net/bpf.h + # doesn't include it but does use struct timeval + # in ioctl definitions; + # + # sys/ioctl.h and, if we have it, sys/ioccom.h, + # because net/bpf.h defines ioctls; + # + # net/if.h, because it defines some structures + # used in ioctls defined by net/bpf.h; + # + # sys/socket.h, because OpenBSD 5.9's net/bpf.h + # defines some structure fields as being + # struct sockaddrs; + # + # and net/bpf.h doesn't necessarily include all + # of those headers itself. + # + if(HAVE_SYS_IOCCOM_H) + check_symbol_exists(BIOCSETIF "sys/types.h;sys/time.h;sys/ioctl.h;sys/socket.h;sys/ioccom.h;net/bpf.h;net/if.h" BPF_H_DEFINES_BIOCSETIF) + else(HAVE_SYS_IOCCOM_H) + check_symbol_exists(BIOCSETIF "sys/types.h;sys/time.h;sys/ioctl.h;sys/socket.h;net/bpf.h;net/if.h" BPF_H_DEFINES_BIOCSETIF) + endif(HAVE_SYS_IOCCOM_H) + endif(HAVE_NET_BPF_H) + check_include_file(net/pfilt.h HAVE_NET_PFILT_H) + check_include_file(net/enet.h HAVE_NET_ENET_H) + check_include_file(net/nit.h HAVE_NET_NIT_H) + check_include_file(sys/net/nit.h HAVE_SYS_NET_NIT_H) + check_include_file(linux/socket.h HAVE_LINUX_SOCKET_H) + check_include_file(net/raw.h HAVE_NET_RAW_H) + check_include_file(sys/dlpi.h HAVE_SYS_DLPI_H) + + if(BPF_H_DEFINES_BIOCSETIF) + # + # BPF. + # Check this before DLPI, so that we pick BPF on + # Solaris 11 and later. + # + set(PCAP_TYPE bpf) + elseif(HAVE_LINUX_SOCKET_H) + # + # No prizes for guessing this one. + # + set(PCAP_TYPE linux) + elseif(HAVE_NET_PFILT_H) + # + # DEC OSF/1, Digital UNIX, Tru64 UNIX + # + set(PCAP_TYPE pf) + elseif(HAVE_NET_ENET_H) + # + # Stanford Enetfilter. + # + set(PCAP_TYPE enet) + elseif(HAVE_NET_NIT_H) + # + # SunOS 4.x STREAMS NIT. + # + set(PCAP_TYPE snit) + elseif(HAVE_SYS_NET_NIT_H) + # + # Pre-SunOS 4.x non-STREAMS NIT. + # + set(PCAP_TYPE nit) + elseif(HAVE_NET_RAW_H) + # + # IRIX snoop. + # + set(PCAP_TYPE snoop) + elseif(HAVE_SYS_DLPI_H) + # + # DLPI on pre-Solaris 11 SunOS 5, HP-UX, possibly others. + # + set(PCAP_TYPE dlpi) + else() + # + # Nothing we support. + # + set(PCAP_TYPE null) + endif() + endif() +endif(WIN32) +message(STATUS "Packet capture mechanism type: ${PCAP_TYPE}") + +# +# Do capture-mechanism-dependent tests. +# +if(WIN32) + if(PCAP_TYPE STREQUAL "npf") + # + # Link with packet.dll before WinSock2. + # + set(PCAP_LINK_LIBRARIES ${PACKET_LIBRARIES} ${PCAP_LINK_LIBRARIES}) + elseif(PCAP_TYPE STREQUAL "null") + else() + message(ERROR "${PCAP_TYPE} is not a valid pcap type") + endif() +else(WIN32) + if(PCAP_TYPE STREQUAL "dlpi") + # + # Needed for common functions used by pcap-[dlpi,libdlpi].c + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} dlpisubs.c) + + # + # Checks for some header files. + # + check_include_file(sys/bufmod.h HAVE_SYS_BUFMOD_H) + check_include_file(sys/dlpi_ext.h HAVE_SYS_DLPI_EXT_H) + + # + # Checks to see if Solaris has the public libdlpi(3LIB) library. + # Note: The existence of /usr/include/libdlpi.h does not mean it is the + # public libdlpi(3LIB) version. Before libdlpi was made public, a + # private version also existed, which did not have the same APIs. + # Due to a gcc bug, the default search path for 32-bit libraries does + # not include /lib, we add it explicitly here. + # [http://bugs.opensolaris.org/view_bug.do?bug_id=6619485]. + # Also, due to the bug above applications that link to libpcap with + # libdlpi will have to add "-L/lib" option to "configure". + # + cmake_push_check_state() + set(CMAKE_REQUIRED_FLAGS "-L/lib") + set(CMAKE_REQUIRED_LIBRARIES dlpi) + check_function_exists(dlpi_walk HAVE_LIBDLPI) + cmake_pop_check_state() + if(HAVE_LIBDLPI) + # + # XXX - add -L/lib + # + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} dlpi) + set(PCAP_TYPE libdlpi) + endif() + + # + # This check is for Solaris with DLPI support for passive modes. + # See dlpi(7P) for more details. + # + # XXX - there's no check_type() macro that's like check_type_size() + # except that it only checks for the existence of the structure type, + # so we use check_type_size() and ignore the size. + # + cmake_push_check_state() + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h sys/dlpi.h) + check_type_size(dl_passive_req_t DL_PASSIVE_REQ_T) + cmake_pop_check_state() + elseif(PCAP_TYPE STREQUAL "linux") + # + # Do we have the wireless extensions? + # linux/wireless.h requires sys/socket.h. + # + check_include_files("sys/socket.h;linux/wireless.h" HAVE_LINUX_WIRELESS_H) + + # + # Do we have libnl? + # + if(BUILD_WITH_LIBNL) + # + # Try libnl 3.x first. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES nl-3) + check_function_exists(nl_socket_alloc HAVE_LIBNL) + cmake_pop_check_state() + if(HAVE_LIBNL) + # + # Yes, we have libnl 3.x. + # + set(PCAP_LINK_LIBRARIES nl-genl-3 nl-3 ${PCAP_LINK_LIBRARIES}) + set(HAVE_LIBNL_3_x ON) + set(HAVE_LIBNL_NLE ON) + set(HAVE_LIBNL_SOCKETS ON) + include_directories("/usr/include/libnl3") + else() + # + # Try libnl 2.x. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES nl) + check_function_exists(nl_socket_alloc HAVE_LIBNL) + cmake_pop_check_state() + if(HAVE_LIBNL) + # + # Yes, we have libnl 2.x. + # + set(PCAP_LINK_LIBRARIES nl-genl nl ${PCAP_LINK_LIBRARIES}) + set(HAVE_LIBNL_2_x ON) + set(HAVE_LIBNL_NLE ON) + set(HAVE_LIBNL_SOCKETS ON) + else() + # + # No, we don't; do we have libnl 1.x? + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES nl) + check_function_exists(nl_handle_alloc HAVE_LIBNL) + cmake_pop_check_state() + if(HAVE_LIBNL) + set(PCAP_LINK_LIBRARIES nl ${PCAP_LINK_LIBRARIES}) + endif() + endif() + endif() + endif() + + check_include_file(linux/ethtool.h HAVE_LINUX_ETHTOOL_H) + + # + # Checks to see if tpacket_stats is defined in linux/if_packet.h + # If so then pcap-linux.c can use this to report proper statistics. + # + # XXX - there's no check_type() macro that's like check_type_size() + # except that it only checks for the existence of the structure type, + # so we use check_type_size() and ignore the size. + # + cmake_push_check_state() + set(CMAKE_EXTRA_INCLUDE_FILES linux/if_packet.h) + check_type_size("struct tpacket_stats" STRUCT_TPACKET_STATS) + cmake_pop_check_state() + + check_struct_has_member("struct tpacket_auxdata" tp_vlan_tci linux/if_packet.h HAVE_STRUCT_TPACKET_AUXDATA_TP_VLAN_TCI) + elseif(PCAP_TYPE STREQUAL "bpf") + # + # Check whether we have the *BSD-style ioctls. + # + check_include_files("sys/types.h;net/if_media.h" HAVE_NET_IF_MEDIA_H) + + # + # Check whether we have struct BPF_TIMEVAL. + # + # XXX - there's no check_type() macro that's like check_type_size() + # except that it only checks for the existence of the structure type, + # so we use check_type_size() and ignore the size. + # + cmake_push_check_state() + if(HAVE_SYS_IOCCOM_H) + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h sys/ioccom.h net/bpf.h) + check_type_size("struct BPF_TIMEVAL" STRUCT_BPF_TIMEVAL) + else() + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h net/bpf.h) + check_type_size("struct BPF_TIMEVAL" STRUCT_BPF_TIMEVAL) + endif() + cmake_pop_check_state() + elseif(PCAP_TYPE STREQUAL "null") + else() + message(FATAL_ERROR "${PCAP_TYPE} is not a valid pcap type") + endif() +endif(WIN32) + +set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-${PCAP_TYPE}.c) + +# +# Now figure out how we get a list of interfaces and addresses, +# if we support capturing. Don't bother if we don't support +# capturing. +# +if(NOT WIN32) + # + # UN*X - figure out what type of interface list mechanism we + # have. + # + # If the capture type is null, that means we can't capture, + # so we can't open any capture devices, so we won't return + # any interfaces. + # + if(NOT PCAP_TYPE STREQUAL "null") + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES ${PCAP_LINK_LIBRARIES}) + check_function_exists(getifaddrs HAVE_GETIFADDRS) + cmake_pop_check_state() + if(NOT HAVE_GETIFADDRS) + # + # It's not in the libraries that, at this point, we've + # found we need to link libpcap with. + # + # It's in libsocket on Solaris and possibly other OSes; + # as long as we're not linking with libxnet, check there. + # + # NOTE: if you hand check_library_exists as its last + # argument a variable that's been set, it skips the test, + # so we need different variables. + # + if(NOT LIBXNET_HAS_GETHOSTBYNAME) + check_library_exists(socket getifaddrs "" SOCKET_HAS_GETIFADDRS) + if(SOCKET_HAS_GETIFADDRS) + set(PCAP_LINK_LIBRARIES socket ${PCAP_LINK_LIBRARIES}) + set(HAVE_GETIFADDRS TRUE) + endif() + endif() + endif() + if(HAVE_GETIFADDRS) + # + # We have "getifaddrs()"; make sure we have <ifaddrs.h> + # as well, just in case some platform is really weird. + # It may require that sys/types.h be included first, + # so include it first. + # + check_include_files("sys/types.h;ifaddrs.h" HAVE_IFADDRS_H) + if(HAVE_IFADDRS_H) + # + # We have the header, so we use "getifaddrs()" to + # get the list of interfaces. + # + set(FINDALLDEVS_TYPE getad) + else() + # + # We don't have the header - give up. + # XXX - we could also fall back on some other + # mechanism, but, for now, this'll catch this + # problem so that we can at least try to figure + # out something to do on systems with "getifaddrs()" + # but without "ifaddrs.h", if there is something + # we can do on those systems. + # + message(FATAL_ERROR "Your system has getifaddrs() but doesn't have a usable <ifaddrs.h>.") + endif() + else() + # + # Well, we don't have "getifaddrs()", at least not with the + # libraries with which we've decided we need to link + # libpcap with, so we have to use some other mechanism. + # + # Note that this may happen on Solaris, which has + # getifaddrs(), but in -lsocket, not in -lxnet, so we + # won't find it if we link with -lxnet, which we want + # to do for other reasons. + # + # For now, we use either the SIOCGIFCONF ioctl or the + # SIOCGLIFCONF ioctl, preferring the latter if we have + # it; the latter is a Solarisism that first appeared + # in Solaris 8. (Solaris's getifaddrs() appears to + # be built atop SIOCGLIFCONF; using it directly + # avoids a not-all-that-useful middleman.) + # + try_compile(HAVE_SIOCGLIFCONF ${CMAKE_CURRENT_BINARY_DIR} "${pcap_SOURCE_DIR}/cmake/have_siocglifconf.c" ) + if(HAVE_SIOCGLIFCONF) + set(FINDALLDEVS_TYPE glifc) + else() + set(FINDALLDEVS_TYPE gifc) + endif() + endif() + message(STATUS "Find-interfaces mechanism type: ${FINDALLDEVS_TYPE}") + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} fad-${FINDALLDEVS_TYPE}.c) + endif() +endif() + +# Check for hardware timestamp support. +if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + check_include_file(linux/net_tstamp.h HAVE_LINUX_NET_TSTAMP_H) +endif() + +# +# Check for additional native sniffing capabilities. +# + +# Check for USB sniffing support on Linux. +# On FreeBSD, it uses BPF, so we don't need to do anything special here. +if(NOT DISABLE_USB) + if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + set(PCAP_SUPPORT_USB TRUE) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-usb-linux.c) + set(LINUX_USB_MON_DEV /dev/usbmon) + # + # Do we have a version of <linux/compiler.h> available? + # If so, we might need it for <linux/usbdevice_fs.h>. + # + check_include_files("linux/compiler.h" HAVE_LINUX_COMPILER_H) + if(HAVE_LINUX_COMPILER_H) + # + # Yes - include it when testing for <linux/usbdevice_fs.h>. + # + check_include_files("linux/compiler.h;linux/usbdevice_fs.h" HAVE_LINUX_USBDEVICE_FS_H) + else(HAVE_LINUX_COMPILER_H) + check_include_files("linux/usbdevice_fs.h" HAVE_LINUX_USBDEVICE_FS_H) + endif(HAVE_LINUX_COMPILER_H) + if(HAVE_LINUX_USBDEVICE_FS_H) + # + # OK, does it define bRequestType? Older versions of the kernel + # define fields with names like "requesttype, "request", and + # "value", rather than "bRequestType", "bRequest", and + # "wValue". + # + if(HAVE_LINUX_COMPILER_H) + check_struct_has_member("struct usbdevfs_ctrltransfer" bRequestType "linux/compiler.h;linux/usbdevice_fs.h" HAVE_STRUCT_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE) + else(HAVE_LINUX_COMPILER_H) + check_struct_has_member("struct usbdevfs_ctrltransfer" bRequestType "linux/usbdevice_fs.h" HAVE_STRUCT_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE) + endif(HAVE_LINUX_COMPILER_H) + endif() + endif() +endif() + +# Check for netfilter sniffing support. +if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + # + # Life's too short to deal with trying to get this to compile + # if you don't get the right types defined with + # __KERNEL_STRICT_NAMES getting defined by some other include. + # + # Check whether the includes Just Work. If not, don't turn on + # netfilter support. + # + check_c_source_compiles( +"#include <sys/socket.h> +#include <netinet/in.h> +#include <linux/types.h> + +#include <linux/netlink.h> +#include <linux/netfilter.h> +#include <linux/netfilter/nfnetlink.h> +#include <linux/netfilter/nfnetlink_log.h> +#include <linux/netfilter/nfnetlink_queue.h> + +int +main(void) +{ + return 0; +} +" + PCAP_SUPPORT_NETFILTER) + if(PCAP_SUPPORT_NETFILTER) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-netfilter-linux.c) + endif(PCAP_SUPPORT_NETFILTER) +endif() + +# Check for netmap sniffing support. +if(NOT DISABLE_NETMAP) + # + # Check whether net/netmap_user.h is usable if NETMAP_WITH_LIBS is + # defined; it's not usable on DragonFly BSD 4.6 if NETMAP_WITH_LIBS + # is defined, for example, as it includes a non-existent malloc.h + # header. + # + check_c_source_compiles( +"#define NETMAP_WITH_LIBS +#include <net/netmap_user.h> + +int +main(void) +{ + return 0; +} +" + PCAP_SUPPORT_NETMAP) + if(PCAP_SUPPORT_NETMAP) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-netmap.c) + endif(PCAP_SUPPORT_NETMAP) +endif() + +# Check for Bluetooth sniffing support +if(NOT DISABLE_BLUETOOTH) + if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + check_include_file(bluetooth/bluetooth.h HAVE_BLUETOOTH_BLUETOOTH_H) + if(HAVE_BLUETOOTH_BLUETOOTH_H) + set(PCAP_SUPPORT_BT TRUE) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-bt-linux.c) + # + # OK, does struct sockaddr_hci have an hci_channel + # member? + # + check_struct_has_member("struct sockaddr_hci" hci_channel "bluetooth/bluetooth.h;bluetooth/hci.h" HAVE_STRUCT_SOCKADDR_HCI_HCI_CHANNEL) + if(HAVE_STRUCT_SOCKADDR_HCI_HCI_CHANNEL) + # + # OK, is HCI_CHANNEL_MONITOR defined? + # + check_c_source_compiles( +"#include <bluetooth/bluetooth.h> +#include <bluetooth/hci.h> + +int +main(void) +{ + u_int i = HCI_CHANNEL_MONITOR; + return 0; +} +" + PCAP_SUPPORT_BT_MONITOR) + if(PCAP_SUPPORT_BT_MONITOR) + # + # Yes, so we can also support Bluetooth monitor + # sniffing. + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-bt-monitor-linux.c) + endif(PCAP_SUPPORT_BT_MONITOR) + endif(HAVE_STRUCT_SOCKADDR_HCI_HCI_CHANNEL) + endif(HAVE_BLUETOOTH_BLUETOOTH_H) + endif() +endif() + +# Check for Bluetooth sniffing support +if(NOT DISABLE_DBUS) + # + # We don't support D-Bus sniffing on macOS; see + # + # https://bugs.freedesktop.org/show_bug.cgi?id=74029 + # + if(APPLE) + message(FATAL_ERROR "Due to freedesktop.org bug 74029, D-Bus capture support is not available on macOS") + endif(APPLE) + include(FindPkgConfig) + pkg_check_modules(DBUS dbus-1) + if(DBUS_FOUND) + set(PCAP_SUPPORT_DBUS TRUE) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-dbus.c) + include_directories(${DBUS_INCLUDE_DIRS}) + + # + # This "helpfully" supplies DBUS_LIBRARIES as a bunch of + # library names - not paths - and DBUS_LIBRARY_DIRS as + # a bunch of directories. + # + # CMake *really* doesn't like the notion of specifying "here are + # the directories in which to look for libraries" except in + # find_library() calls; it *really* prefers using full paths to + # library files, rather than library names. + # + # Find the libraries and add their full paths. + # + set(DBUS_LIBRARY_FULLPATHS) + foreach(_lib IN LISTS DBUS_LIBRARIES) + # + # Try to find this library, so we get its full path. + # + find_library(_libfullpath ${_lib} HINTS ${DBUS_LIBRARY_DIRS}) + list(APPEND DBUS_LIBRARY_FULLPATHS ${_libfullpath}) + endforeach() + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} ${DBUS_LIBRARY_FULLPATHS}) + endif(DBUS_FOUND) +endif(NOT DISABLE_DBUS) + +# Check for RDMA sniffing support +if(NOT DISABLE_RDMA) + check_library_exists(ibverbs ibv_get_device_list "" LIBIBVERBS_HAS_IBV_GET_DEVICE_LIST) + if(LIBIBVERBS_HAS_IBV_GET_DEVICE_LIST) + check_include_file(infiniband/verbs.h HAVE_INFINIBAND_VERBS_H) + if(HAVE_INFINIBAND_VERBS_H) + check_symbol_exists(ibv_create_flow infiniband/verbs.h PCAP_SUPPORT_RDMASNIFF) + if(PCAP_SUPPORT_RDMASNIFF) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-rdmasniff.c) + set(PCAP_LINK_LIBRARIES ibverbs ${PCAP_LINK_LIBRARIES}) + endif(PCAP_SUPPORT_RDMASNIFF) + endif(HAVE_INFINIBAND_VERBS_H) + endif(LIBIBVERBS_HAS_IBV_GET_DEVICE_LIST) +endif(NOT DISABLE_RDMA) + +# +# Check for sniffing capabilities using third-party APIs. +# + +# Check for Endace DAG card support. +if(NOT DISABLE_DAG) + # + # Try to find the DAG header file and library. + # + find_package(DAG) + + # + # Did we succeed? + # + if(DAG_FOUND) + # + # Yes. + # Check for various DAG API functions. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_INCLUDES ${DAG_INCLUDE_DIRS}) + set(CMAKE_REQUIRED_LIBRARIES ${DAG_LIBRARIES}) + check_function_exists(dag_attach_stream HAVE_DAG_STREAMS_API) + if(NOT HAVE_DAG_STREAMS_API) + message(FATAL_ERROR "DAG library lacks streams support") + endif() + check_function_exists(dag_attach_stream64 HAVE_DAG_LARGE_STREAMS_API) + check_function_exists(dag_get_erf_types HAVE_DAG_GET_ERF_TYPES) + check_function_exists(dag_get_stream_erf_types HAVE_DAG_GET_STREAM_ERF_TYPES) + cmake_pop_check_state() + + include_directories(AFTER ${DAG_INCLUDE_DIRS}) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-dag.c) + set(HAVE_DAG_API TRUE) + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} ${DAG_LIBRARIES}) + + if(HAVE_DAG_LARGE_STREAMS_API) + get_filename_component(DAG_LIBRARY_DIR ${DAG_LIBRARY} PATH) + check_library_exists(vdag vdag_set_device_info ${DAG_LIBRARY_DIR} HAVE_DAG_VDAG) + if(HAVE_DAG_VDAG) + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}) + endif() + endif() + endif() +endif() + +# Check for Septel card support. +set(PROJECT_EXTERNAL_OBJECT_LIST "") +if(NOT DISABLE_SEPTEL) + # + # Do we have the msg.h header? + # + set(SEPTEL_INCLUDE_DIRS "${SEPTEL_ROOT}/INC") + cmake_push_check_state() + set(CMAKE_REQUIRED_INCLUDES ${SEPTEL_INCLUDE_DIRS}) + check_include_file(msg.h HAVE_INC_MSG_H) + cmake_pop_check_state() + if(HAVE_INC_MSG_H) + # + # Yes. + # + include_directories(AFTER ${SEPTEL_INCLUDE_DIRS}) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-septel.c) + set(PROJECT_EXTERNAL_OBJECT_LIST ${PROJECT_EXTERNAL_OBJECT_LIST} "${SEPTEL_ROOT}/asciibin.o ${SEPTEL_ROOT}/bit2byte.o ${SEPTEL_ROOT}/confirm.o ${SEPTEL_ROOT}/fmtmsg.o ${SEPTEL_ROOT}/gct_unix.o ${SEPTEL_ROOT}/hqueue.o ${SEPTEL_ROOT}/ident.o ${SEPTEL_ROOT}/mem.o ${SEPTEL_ROOT}/pack.o ${SEPTEL_ROOT}/parse.o ${SEPTEL_ROOT}/pool.o ${SEPTEL_ROOT}/sdlsig.o ${SEPTEL_ROOT}/strtonum.o ${SEPTEL_ROOT}/timer.o ${SEPTEL_ROOT}/trace.o") + set(HAVE_SEPTEL_API TRUE) + endif() +endif() + +# Check for Myricom SNF support. +if(NOT DISABLE_SNF) + # + # Try to find the SNF header file and library. + # + find_package(SNF) + + # + # Did we succeed? + # + if(SNF_FOUND) + # + # Yes. + # + include_directories(AFTER ${SNF_INCLUDE_DIRS}) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-snf.c) + set(HAVE_SNF_API TRUE) + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} ${SNF_LIBRARIES}) + endif() +endif() + +# Check for Riverbed TurboCap support. +if(NOT DISABLE_TC) + # + # Try to find the TurboCap header file and library. + # + find_package(TC) + + # + # Did we succeed? + # + if(TC_FOUND) + # + # Yes. + # + include_directories(AFTER ${TC_INCLUDE_DIRS}) + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} pcap-tc.c) + set(HAVE_TC_API TRUE) + set(PCAP_LINK_LIBRARIES "${PCAP_LINK_LIBRARIES} ${TC_LIBRARIES} ${CMAKE_USE_PTHREADS_INIT} stdc++") + endif() +endif() + +# +# Remote capture support. +# + +if(ENABLE_REMOTE) + # + # Check for various members of struct msghdr. + # We need to include ftmacros.h on some platforms, to make sure we + # get the POSIX/Single USER Specification version of struct msghdr, + # which has those members, rather than the backwards-compatible + # version, which doesn't. That's not a system header file, and + # at least some versions of CMake include it as <ftmacros.h>, which + # won't check the current directory, so we add the top-level + # source directory to the list of include directories when we do + # the check. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR}) + check_struct_has_member("struct msghdr" msg_control "ftmacros.h;sys/socket.h" HAVE_STRUCT_MSGHDR_MSG_CONTROL) + check_struct_has_member("struct msghdr" msg_flags "ftmacros.h;sys/socket.h" HAVE_STRUCT_MSGHDR_MSG_FLAGS) + cmake_pop_check_state() + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} + pcap-new.c pcap-rpcap.c rpcap-protocol.c sockutils.c) +endif(ENABLE_REMOTE) + +################################################################### +# Warning options +################################################################### + +# +# Check and add warning options if we have a .devel file. +# +if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.devel OR EXISTS ${CMAKE_BINARY_DIR}/.devel) + # + # Warning options. + # + if(MSVC AND NOT ${CMAKE_C_COMPILER} MATCHES "clang*") + # + # MSVC, with Microsoft's front end and code generator. + # "MSVC" is also set for Microsoft's compiler with a Clang + # front end and their code generator ("Clang/C2"), so we + # check for clang.exe and treat that differently. + # + check_and_add_compiler_option(-Wall) + # + # Disable some pointless warnings that /Wall turns on. + # + # Unfortunately, MSVC does not appear to have an equivalent + # to "__attribute__((unused))" to mark a particular function + # parameter as being known to be unused, so that the compiler + # won't warn about it (for example, the function might have + # that parameter because a pointer to it is being used, and + # the signature of that function includes that parameter). + # C++ lets you give a parameter a type but no name, but C + # doesn't have that. + # + check_and_add_compiler_option(-wd4100) + # + # In theory, we care whether somebody uses f() rather than + # f(void) to declare a function with no arguments, but, in + # practice, there are places in the Windows header files + # that appear to do that, so we squelch that warning. + # + check_and_add_compiler_option(-wd4255) + # + # Windows FD_SET() generates this, so we suppress it. + # + check_and_add_compiler_option(-wd4548) + # + # Perhaps testing something #defined to be 0 with #ifdef is an + # error, and it should be tested with #if, but perhaps it's + # not, and Microsoft does that in its headers, so we squelch + # that warning. + # + check_and_add_compiler_option(-wd4574) + # + # The Windows headers also test not-defined values in #if, so + # we don't want warnings about that, either. + # + check_and_add_compiler_option(-wd4668) + # + # We do *not* care whether some function is, or isn't, going to be + # expanded inline. + # + check_and_add_compiler_option(-wd4710) + check_and_add_compiler_option(-wd4711) + # + # We do *not* care whether we're adding padding bytes after + # structure members. + # + check_and_add_compiler_option(-wd4820) + else() + # + # Other compilers, including MSVC with a Clang front end and + # Microsoft's code generator. We currently treat them as if + # they might support GCC-style -W options. + # + check_and_add_compiler_option(-Wall) + check_and_add_compiler_option(-Wsign-compare) + check_and_add_compiler_option(-Wmissing-prototypes) + check_and_add_compiler_option(-Wstrict-prototypes) + check_and_add_compiler_option(-Wshadow) + check_and_add_compiler_option(-Wdeclaration-after-statement) + check_and_add_compiler_option(-Wused-but-marked-unused) + check_and_add_compiler_option(-Wdocumentation) + check_and_add_compiler_option(-Wcomma) + check_and_add_compiler_option(-Wmissing-noreturn) + # Warns about safeguards added in case the enums are extended + # check_and_add_compiler_option(-Wcovered-switch-default) + check_and_add_compiler_option(-Wmissing-variable-declarations) + check_and_add_compiler_option(-Wunused-parameter) + check_and_add_compiler_option(-Wformat-nonliteral) + check_and_add_compiler_option(-Wunreachable-code) + endif() +endif() + +# +# Suppress some warnings we get with MSVC even without /Wall. +# +if(MSVC AND NOT ${CMAKE_C_COMPILER} MATCHES "clang*") + # + # Yes, we have some functions that never return but that + # have a non-void return type. That's because, on some + # platforms, they *do* return values but, on other + # platforms, including Windows, they just fail and + # longjmp out by calling bpf_error(). + # + check_and_add_compiler_option(-wd4646) +endif() + +file(GLOB PROJECT_SOURCE_LIST_H + *.h + pcap/*.h +) + +# +# Try to have the compiler default to hiding symbols, so that only +# symbols explicitly exported with PCAP_API will be visible outside +# (shared) libraries. +# +# Not necessary with MSVC, as that's the default. +# +# XXX - we don't use ADD_COMPILER_EXPORT_FLAGS, because, as of CMake +# 2.8.12.2, it doesn't know about Sun C/Oracle Studio, and, as of +# CMake 2.8.6, it only sets the C++ compiler flags, rather than +# allowing an arbitrary variable to be set with the "hide symbols +# not explicitly exported" flag. +# +if(NOT MSVC) + if(CMAKE_C_COMPILER_ID MATCHES "SunPro") + # + # Sun C/Oracle Studio. + # + check_and_add_compiler_option(-xldscope=hidden) + else() + # + # Try this for all other compilers; it's what GCC uses, + # and a number of other compilers, such as Clang and Intel C, + # use it as well. + # + check_and_add_compiler_option(-fvisibility=hidden) + endif() +endif(NOT MSVC) + +# +# Flex/Lex and YACC/Berkeley YACC/Bison. +# From a mail message to the CMake mailing list by Andy Cedilnik of +# Kitware. +# + +# +# Try to find Flex, a Windows version of Flex, or Lex. +# +find_program(LEX_EXECUTABLE NAMES flex win_flex lex) +if(LEX_EXECUTABLE STREQUAL "LEX_EXECUTABLE-NOTFOUND") + message(FATAL_ERROR "Neither flex nor win_flex nor lex was found.") +endif() +message(STATUS "Lexical analyzer generator: ${LEX_EXECUTABLE}") + +add_custom_command( + OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/scanner.c ${CMAKE_CURRENT_BINARY_DIR}/scanner.h + SOURCE ${pcap_SOURCE_DIR}/scanner.l + COMMAND ${LEX_EXECUTABLE} -P pcap_ --header-file=scanner.h --nounput -o${CMAKE_CURRENT_BINARY_DIR}/scanner.c ${pcap_SOURCE_DIR}/scanner.l + DEPENDS ${pcap_SOURCE_DIR}/scanner.l +) + +# +# Since scanner.c does not exist yet when cmake is run, mark +# it as generated. +# +# Since scanner.c includes grammar.h, mark that as a dependency. +# +set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/scanner.c PROPERTIES + GENERATED TRUE + OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/grammar.h +) + +# +# Add scanner.c to the list of sources. +# +#set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} ${CMAKE_CURRENT_BINARY_DIR}/scanner.c) + +# +# Try to find YACC or Bison. +# +find_program(YACC_EXECUTABLE NAMES bison win_bison byacc yacc) +if(YACC_EXECUTABLE STREQUAL "YACC_EXECUTABLE-NOTFOUND") + message(FATAL_ERROR "Neither bison nor win_bison nor byacc nor yacc was found.") +endif() +message(STATUS "Parser generator: ${YACC_EXECUTABLE}") + +# +# Create custom command for the scanner. +# Find out whether it's Bison or not by looking at the last component +# of the path (without a .exe extension, if this is Windows). +# +get_filename_component(YACC_NAME ${YACC_EXECUTABLE} NAME_WE) +if("${YACC_NAME}" STREQUAL "bison" OR "${YACC_NAME}" STREQUAL "win_bison") + set(YACC_COMPATIBILITY_FLAG "-y") +endif() +add_custom_command( + OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/grammar.c ${CMAKE_CURRENT_BINARY_DIR}/grammar.h + SOURCE ${pcap_SOURCE_DIR}/grammar.y + COMMAND ${YACC_EXECUTABLE} ${YACC_COMPATIBILITY_FLAG} -p pcap_ -o ${CMAKE_CURRENT_BINARY_DIR}/grammar.c -d ${pcap_SOURCE_DIR}/grammar.y + DEPENDS ${pcap_SOURCE_DIR}/grammar.y +) + +# +# Since grammar.c does not exists yet when cmake is run, mark +# it as generated. +# +set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/grammar.c PROPERTIES + GENERATED TRUE + OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/scanner.h +) + +# +# Add grammar.c to the list of sources. +# +#set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} ${CMAKE_CURRENT_BINARY_DIR}/grammar.c) + +# +# Assume, by default, no support for shared libraries and V7/BSD +# convention for man pages (devices in section 4, file formats in +# section 5, miscellaneous info in section 7, administrative commands +# and daemons in section 8). Individual cases can override this. +# Individual cases can override this. +# +set(MAN_DEVICES 4) +set(MAN_FILE_FORMATS 5) +set(MAN_MISC_INFO 7) +set(MAN_ADMIN_COMMANDS 8) +if(CMAKE_SYSTEM_NAME STREQUAL "AIX") + # Workaround to enable certain features + set(_SUN TRUE) + if(PCAP_TYPE STREQUAL "bpf") + # + # If we're using BPF, we need libodm and libcfg, as + # we use them to load the BPF module. + # + set(PCAP_LINK_LIBRARIES ${PCAP_LINK_LIBRARIES} odm cfg) + endif() +elseif(CMAKE_SYSTEM_NAME STREQUAL "HP-UX") + if(CMAKE_SYSTEM_VERSION MATCHES "[A-Z.]*9\.[0-9]*") + # + # HP-UX 9.x. + # + set(HAVE_HPUX9 TRUE) + elseif(CMAKE_SYSTEM_VERSION MATCHES "[A-Z.]*10\.0") + # + # HP-UX 10.0. + # + elseif(CMAKE_SYSTEM_VERSION MATCHES "[A-Z.]*10\.1") + # + # HP-UX 10.1. + # + else() + # + # HP-UX 10.20 and later. + # + set(HAVE_HPUX10_20_OR_LATER TRUE) + endif() + + # + # Use System V conventions for man pages. + # + set(MAN_ADMIN_COMMANDS 1m) + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) +elseif(CMAKE_SYSTEM_NAME STREQUAL "IRIX" OR CMAKE_SYSTEM_NAME STREQUAL "IRIX64") + # + # Use IRIX conventions for man pages; they're the same as the + # System V conventions, except that they use section 8 for + # administrative commands and daemons. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) +elseif(CMAKE_SYSTEM_NAME STREQUAL "OSF1") + # + # DEC OSF/1, a/k/a Digial UNIX, a/k/a Tru64 UNIX. + # Use Tru64 UNIX conventions for man pages; they're the same as the + # System V conventions except that they use section 8 for + # administrative commands and daemons. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) + set(MAN_DEVICES 7) +elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND CMAKE_SYSTEM_VERSION MATCHES "5[.][0-9.]*") + # + # SunOS 5.x. + # + set(HAVE_SOLARIS TRUE) + # + # Make sure errno is thread-safe, in case we're called in + # a multithreaded program. We don't guarantee that two + # threads can use the *same* pcap_t safely, but the + # current version does guarantee that you can use different + # pcap_t's in different threads, and even that pcap_compile() + # is thread-safe (it wasn't thread-safe in some older versions). + # + add_definitions(-D_TS_ERRNO) + + if(CMAKE_SYSTEM_VERSION STREQUAL "5.12") + else() + # + # Use System V conventions for man pages. + # + set(MAN_ADMIN_COMMANDS 1m) + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) + set(MAN_DEVICES 7D) + endif() +endif() + +source_group("Source Files" FILES ${PROJECT_SOURCE_LIST_C}) +source_group("Header Files" FILES ${PROJECT_SOURCE_LIST_H}) + +if(WIN32) + # + # Add pcap-dll.rc to the list of sources. + # + set(PROJECT_SOURCE_LIST_C ${PROJECT_SOURCE_LIST_C} ${pcap_SOURCE_DIR}/pcap-dll.rc) +endif(WIN32) + +# +# Add subdirectories after we've set various variables, so they pick up +# pick up those variables. +# +if(ENABLE_REMOTE) + add_subdirectory(rpcapd) +endif(ENABLE_REMOTE) +add_subdirectory(testprogs) + +###################################### +# Register targets +###################################### + +# +# Special target to serialize the building of the generated source. +# +# See +# +# http://public.kitware.com/pipermail/cmake/2013-August/055510.html +# +add_custom_target(SerializeTarget + DEPENDS + ${CMAKE_CURRENT_BINARY_DIR}/grammar.c + ${CMAKE_CURRENT_BINARY_DIR}/scanner.c +) + +set_source_files_properties(${PROJECT_EXTERNAL_OBJECT_LIST} PROPERTIES + EXTERNAL_OBJECT TRUE) + +if(BUILD_SHARED_LIBS) + add_library(${LIBRARY_NAME} SHARED + ${PROJECT_SOURCE_LIST_C} + ${CMAKE_CURRENT_BINARY_DIR}/grammar.c + ${CMAKE_CURRENT_BINARY_DIR}/scanner.c + ${PROJECT_EXTERNAL_OBJECT_LIST} + ) + add_dependencies(${LIBRARY_NAME} SerializeTarget) + set_target_properties(${LIBRARY_NAME} PROPERTIES + COMPILE_DEFINITIONS BUILDING_PCAP) + # + # No matter what the library is called - it might be called "wpcap" + # in a Windows build - the symbol to define to indicate that we're + # building the library, rather than a program using the library, + # and thus that we're exporting functions defined in our public + # header files, rather than importing those functions, is + # pcap_EXPORTS. + # + set_target_properties(${LIBRARY_NAME} PROPERTIES + DEFINE_SYMBOL pcap_EXPORTS) +endif(BUILD_SHARED_LIBS) + +add_library(${LIBRARY_NAME}_static STATIC + ${PROJECT_SOURCE_LIST_C} + ${CMAKE_CURRENT_BINARY_DIR}/grammar.c + ${CMAKE_CURRENT_BINARY_DIR}/scanner.c + ${PROJECT_EXTERNAL_OBJECT_LIST} +) +add_dependencies(${LIBRARY_NAME}_static SerializeTarget) +set_target_properties(${LIBRARY_NAME}_static PROPERTIES + COMPILE_DEFINITIONS BUILDING_PCAP) + +if(WIN32) + if(BUILD_SHARED_LIBS) + set_target_properties(${LIBRARY_NAME} PROPERTIES + VERSION ${PACKAGE_VERSION_NOSUFFIX} # only MAJOR and MINOR are needed + ) + endif(BUILD_SHARED_LIBS) + if(MSVC) + # XXX For DLLs, the TARGET_PDB_FILE generator expression can be used to locate + # its PDB file's output directory for installation. + # cmake doesn't offer a generator expression for PDB files generated by the + # compiler (static libraries). + # So instead of considering any possible output there is (there are many), + # this will search for the PDB file in the compiler's initial output directory, + # which is always ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles\wpcap_static.dir + # regardless of architecture, build generator etc. + # Quite hackish indeed. + set(CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY $<TARGET_FILE_DIR:${LIBRARY_NAME}_static>) + set_target_properties(${LIBRARY_NAME}_static PROPERTIES + COMPILE_PDB_NAME ${LIBRARY_NAME}_static + OUTPUT_NAME "${LIBRARY_NAME}_static" + ) + elseif(MINGW) + # + # For compatibility, build the shared library without the "lib" prefix on + # MinGW as well. + # + set_target_properties(${LIBRARY_NAME} PROPERTIES + PREFIX "" + OUTPUT_NAME "${LIBRARY_NAME}" + ) + set_target_properties(${LIBRARY_NAME}_static PROPERTIES + OUTPUT_NAME "${LIBRARY_NAME}" + ) + endif() +else(WIN32) # UN*X + if(BUILD_SHARED_LIBS) + if(APPLE) + set_target_properties(${LIBRARY_NAME} PROPERTIES + VERSION ${PACKAGE_VERSION} + SOVERSION A + ) + else(APPLE) + set_target_properties(${LIBRARY_NAME} PROPERTIES + VERSION ${PACKAGE_VERSION} + SOVERSION ${PACKAGE_VERSION_MAJOR} + ) + endif(APPLE) + endif(BUILD_SHARED_LIBS) + set_target_properties(${LIBRARY_NAME}_static PROPERTIES + OUTPUT_NAME "${LIBRARY_NAME}" + ) +endif(WIN32) + +if(BUILD_SHARED_LIBS) + if(NOT C_ADDITIONAL_FLAGS STREQUAL "") + set_target_properties(${LIBRARY_NAME} PROPERTIES COMPILE_FLAGS ${C_ADDITIONAL_FLAGS}) + endif() + target_link_libraries(${LIBRARY_NAME} ${PCAP_LINK_LIBRARIES}) +endif(BUILD_SHARED_LIBS) + +if(NOT C_ADDITIONAL_FLAGS STREQUAL "") + set_target_properties(${LIBRARY_NAME}_static PROPERTIES COMPILE_FLAGS ${C_ADDITIONAL_FLAGS}) +endif() + +# +# On macOS, build libpcap for the appropriate architectures, if +# CMAKE_OSX_ARCHITECTURES isn't set (if it is, let that control +# the architectures for which to build it). +# +if(APPLE AND "${CMAKE_OSX_ARCHITECTURES}" STREQUAL "") + # + # Get the major version of Darwin. + # + string(REGEX MATCH "^([0-9]+)" SYSTEM_VERSION_MAJOR "${CMAKE_SYSTEM_VERSION}") + + if(SYSTEM_VERSION_MAJOR LESS 8) + # + # Pre-Tiger. Build only for 32-bit PowerPC. + # + set(OSX_LIBRARY_ARCHITECTURES "ppc") + elseif(SYSTEM_VERSION_MAJOR EQUAL 8) + # + # Tiger. Is this prior to, or with, Intel support? + # + # Get the minor version of Darwin. + # + string(REPLACE "${SYSTEM_VERSION_MAJOR}." "" SYSTEM_MINOR_AND_PATCH_VERSION ${CMAKE_SYSTEM_VERSION}) + string(REGEX MATCH "^([0-9]+)" SYSTEM_VERSION_MINOR "${SYSTEM_MINOR_AND_PATCH_VERSION}") + if(SYSTEM_VERSION_MINOR LESS 4) + # + # Prior to Intel support. Build for 32-bit + # PowerPC and 64-bit PowerPC, with 32-bit PowerPC + # first. (I'm guessing that's what Apple does.) + # + set(OSX_LIBRARY_ARCHITECTURES "ppc;ppc64") + elseif(SYSTEM_VERSION_MINOR LESS 7) + # + # With Intel support but prior to x86-64 support. + # Build for 32-bit PowerPC, 64-bit PowerPC, and 32-bit x86, + # with 32-bit PowerPC first. + # (I'm guessing that's what Apple does.) + # + set(OSX_LIBRARY_ARCHITECTURES "ppc;ppc64;i386") + else() + # + # With Intel support including x86-64 support. + # Build for 32-bit PowerPC, 64-bit PowerPC, 32-bit x86, + # and x86-64, with 32-bit PowerPC first. + # (I'm guessing that's what Apple does.) + # + set(OSX_LIBRARY_ARCHITECTURES "ppc;ppc64;i386;x86_64") + endif() + elseif(SYSTEM_VERSION_MAJOR EQUAL 9) + # + # Leopard. Build for 32-bit PowerPC, 64-bit + # PowerPC, 32-bit x86, and x86-64, with 32-bit PowerPC + # first. (That's what Apple does.) + # + set(OSX_LIBRARY_ARCHITECTURES "ppc;ppc64;i386;x86_64") + elseif(SYSTEM_VERSION_MAJOR EQUAL 10) + # + # Snow Leopard. Build for x86-64, 32-bit x86, and + # 32-bit PowerPC, with x86-64 first. (That's + # what Apple does, even though Snow Leopard + # doesn't run on PPC, so PPC libpcap runs under + # Rosetta, and Rosetta doesn't support BPF + # ioctls, so PPC programs can't do live + # captures.) + # + set(OSX_LIBRARY_ARCHITECTURES "x86_64;i386;ppc") + else() + # + # Post-Snow Leopard. Build for x86-64 and 32-bit x86, + # with x86-64 first. (That's what Apple does) + # XXX - update if and when Apple drops support + # for 32-bit x86 code and if and when Apple adds + # ARM-based Macs. (You're on your own for iOS etc.) + # + # XXX - check whether we *can* build for i386 and, if not, + # suggest that the user install the /usr/include headers if + # they want to build fat. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_FLAGS "-arch i386") + check_c_source_compiles( +"int +main(void) +{ + return 0; +} +" + X86_32_BIT_SUPPORTED) + cmake_pop_check_state() + if(X86_32_BIT_SUPPORTED) + set(OSX_LIBRARY_ARCHITECTURES "x86_64;i386") + else() + set(OSX_LIBRARY_ARCHITECTURES "x86_64") + if(SYSTEM_VERSION_MAJOR LESS 18) + # + # Pre-Mojave; the command-line tools should be sufficient to + # enable 32-bit x86 builds. + # + message(WARNING "Compiling for 32-bit x86 gives an error; try installing the command-line tools") + else() + message(WARNING "Compiling for 32-bit x86 gives an error; try installing the command-line tools and, after that, installing the /usr/include headers from the /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg package") + endif() + endif() + endif() + if(BUILD_SHARED_LIBS) + set_target_properties(${LIBRARY_NAME} PROPERTIES + OSX_ARCHITECTURES "${OSX_LIBRARY_ARCHITECTURES}") + endif(BUILD_SHARED_LIBS) + set_target_properties(${LIBRARY_NAME}_static PROPERTIES + OSX_ARCHITECTURES "${OSX_LIBRARY_ARCHITECTURES}") +endif() + +###################################### +# Write out the config.h file +###################################### + +configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmakeconfig.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h) + +###################################### +# Install pcap library, include files, and man pages +###################################### + +# +# "Define GNU standard installation directories", which actually +# are also defined, to some degree, by autotools, and at least +# some of which are general UN*X conventions. +# +include(GNUInstallDirs) + +set(LIBRARY_NAME_STATIC ${LIBRARY_NAME}_static) + +function(install_manpage_symlink SOURCE TARGET MANDIR) + if(MINGW) + find_program(LINK_EXECUTABLE ln) + if(LINK_EXECUTABLE) + set(LINK_COMMAND "\"${LINK_EXECUTABLE}\" \"-s\" \"${SOURCE}\" \"${TARGET}\"") + else(LINK_EXECUTABLE) + message(FATAL_ERROR "ln (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html) not found.") + endif(LINK_EXECUTABLE) + else(MINGW) + set(LINK_COMMAND "\"${CMAKE_COMMAND}\" \"-E\" \"create_symlink\" \"${SOURCE}\" \"${TARGET}\"") + endif(MINGW) + + install(CODE + "message(STATUS \"Symlinking: ${CMAKE_INSTALL_PREFIX}/${MANDIR}/${SOURCE} to ${TARGET}\") + execute_process( + COMMAND \"${CMAKE_COMMAND}\" \"-E\" \"remove\" \"${TARGET}\" + WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX}/${MANDIR} + ) + execute_process( + COMMAND ${LINK_COMMAND} + WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX}/${MANDIR} + RESULT_VARIABLE EXIT_STATUS + ) + if(NOT EXIT_STATUS EQUAL 0) + message(FATAL_ERROR \"Could not create symbolic link from ${CMAKE_INSTALL_PREFIX}/${MANDIR}/${SOURCE} to ${TARGET}\") + endif() + set(CMAKE_INSTALL_MANIFEST_FILES \${CMAKE_INSTALL_MANIFEST_FILES} ${CMAKE_INSTALL_PREFIX}/${MANDIR}/${TARGET})") +endfunction(install_manpage_symlink) + +set(MAN1_NOEXPAND pcap-config.1) +set(MAN3PCAP_EXPAND + pcap.3pcap.in + pcap_compile.3pcap.in + pcap_datalink.3pcap.in + pcap_dump_open.3pcap.in + pcap_get_tstamp_precision.3pcap.in + pcap_list_datalinks.3pcap.in + pcap_list_tstamp_types.3pcap.in + pcap_open_dead.3pcap.in + pcap_open_offline.3pcap.in + pcap_set_immediate_mode.3pcap.in + pcap_set_tstamp_precision.3pcap.in + pcap_set_tstamp_type.3pcap.in +) +set(MAN3PCAP_NOEXPAND + pcap_activate.3pcap + pcap_breakloop.3pcap + pcap_can_set_rfmon.3pcap + pcap_close.3pcap + pcap_create.3pcap + pcap_datalink_name_to_val.3pcap + pcap_datalink_val_to_name.3pcap + pcap_dump.3pcap + pcap_dump_close.3pcap + pcap_dump_file.3pcap + pcap_dump_flush.3pcap + pcap_dump_ftell.3pcap + pcap_file.3pcap + pcap_fileno.3pcap + pcap_findalldevs.3pcap + pcap_freecode.3pcap + pcap_get_required_select_timeout.3pcap + pcap_get_selectable_fd.3pcap + pcap_geterr.3pcap + pcap_inject.3pcap + pcap_is_swapped.3pcap + pcap_lib_version.3pcap + pcap_lookupdev.3pcap + pcap_lookupnet.3pcap + pcap_loop.3pcap + pcap_major_version.3pcap + pcap_next_ex.3pcap + pcap_offline_filter.3pcap + pcap_open_live.3pcap + pcap_set_buffer_size.3pcap + pcap_set_datalink.3pcap + pcap_set_promisc.3pcap + pcap_set_protocol_linux.3pcap + pcap_set_rfmon.3pcap + pcap_set_snaplen.3pcap + pcap_set_timeout.3pcap + pcap_setdirection.3pcap + pcap_setfilter.3pcap + pcap_setnonblock.3pcap + pcap_snapshot.3pcap + pcap_stats.3pcap + pcap_statustostr.3pcap + pcap_strerror.3pcap + pcap_tstamp_type_name_to_val.3pcap + pcap_tstamp_type_val_to_name.3pcap +) +set(MANFILE_EXPAND pcap-savefile.manfile.in) +set(MANMISC_EXPAND + pcap-filter.manmisc.in + pcap-linktype.manmisc.in + pcap-tstamp.manmisc.in +) + +if(NOT BUILD_SHARED_LIBS) + unset(LIBRARY_NAME) +endif(NOT BUILD_SHARED_LIBS) + + if(WIN32) + if(MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 8) + # + # Install 64-bit code built with MSVC in the amd64 subdirectories, + # as that's where it expects it to be. + # + install(TARGETS ${LIBRARY_NAME} ${LIBRARY_NAME_STATIC} + RUNTIME DESTINATION bin/amd64 + LIBRARY DESTINATION lib/amd64 + ARCHIVE DESTINATION lib/amd64) + if(NOT MINGW) + install(FILES $<TARGET_FILE_DIR:${LIBRARY_NAME_STATIC}>/${LIBRARY_NAME_STATIC}.pdb + DESTINATION bin/amd64 OPTIONAL) + if(BUILD_SHARED_LIBS) + install(FILES $<TARGET_PDB_FILE:${LIBRARY_NAME}> + DESTINATION bin/amd64 OPTIONAL) + endif(BUILD_SHARED_LIBS) + endif(NOT MINGW) + else(MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 8) + # + # Install 32-bit code, and 64-bit code not built with MSVC + # in the top-level directories, as those are where they + # expect it to be. + # + install(TARGETS ${LIBRARY_NAME} ${LIBRARY_NAME_STATIC} + RUNTIME DESTINATION bin + LIBRARY DESTINATION lib + ARCHIVE DESTINATION lib) + if(NOT MINGW) + install(FILES $<TARGET_FILE_DIR:${LIBRARY_NAME_STATIC}>/${LIBRARY_NAME_STATIC}.pdb + DESTINATION bin OPTIONAL) + if(BUILD_SHARED_LIBS) + install(FILES $<TARGET_PDB_FILE:${LIBRARY_NAME}> + DESTINATION bin OPTIONAL) + endif(BUILD_SHARED_LIBS) + endif(NOT MINGW) + endif(MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 8) + else(WIN32) + target_link_libraries(${_executable} + ${ARGN} ${LIBRARY_NAME}_static ${PCAP_LINK_LIBRARIES}) + endif(WIN32) + add_dependencies(testprogs ${_executable}) +endmacro() + +add_test_executable(can_set_rfmon_test) +add_test_executable(capturetest) +add_test_executable(filtertest) +add_test_executable(findalldevstest) +add_test_executable(opentest) +add_test_executable(reactivatetest) + +if(NOT WIN32) + add_test_executable(selpolltest) +endif() + +add_test_executable(threadsignaltest ${CMAKE_THREAD_LIBS_INIT}) + +if(NOT WIN32) + add_test_executable(valgrindtest) +endif() |