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c-ares/CMakeLists.txt

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provide SPDX identifiers and a REUSE CI job to verify All files have their licence and copyright information clearly identifiable. If not in the file header, they are set separately in .reuse/dep5. All used license texts are provided in LICENSES/
2 years ago
# Copyright (C) The c-ares project and its contributors
# SPDX-License-Identifier: MIT
Fix internal datatype usage and warnings (#573) PR #568 increased the warning levels and c-ares code emitted a bunch of warnings. This PR fixes those warnings and starts transitioning internal data types into more proper forms (e.g. data lengths should be size_t not int). It does, however, have to manually cast back to what the public API needs due to API and ABI compliance (we aren't looking to break integrations, just clean up internals). Fix By: Brad House (@bradh352)
1 year ago
CMAKE_MINIMUM_REQUIRED (VERSION 3.5.0)
Increase compiler warnings by default (#568) c-ares was missing a couple of common compiler warnings during building that are widely recognized as a best practice. This PR makes no code changes, only build system changes to increase warning levels. This PR does cause some new warnings to be emitted, a follow-up PR will address those. Fix By: Brad House (@bradh352)
1 year ago
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
INCLUDE (CheckIncludeFiles)
INCLUDE (CheckTypeSize)
INCLUDE (CheckFunctionExists)
INCLUDE (CheckSymbolExists)
INCLUDE (CheckCSourceCompiles)
INCLUDE (CheckStructHasMember)
INCLUDE (CheckLibraryExists)
1.23.0 release prep (#641)
1 year ago
PROJECT (c-ares LANGUAGES C VERSION "1.23.0" )
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Set this version before release
SET (CARES_VERSION "${PROJECT_VERSION}")
INCLUDE (GNUInstallDirs) # include this *AFTER* PROJECT(), otherwise paths are wrong.
# This is for libtool compatibility, and specified in a form that is easily
# translatable from libtool (even if the actual form doesn't make sense).
# For instance, in an autotools project, in Makefile.am there is a line that
# contains something like:
# -version-info 4:0:2
# This breaks down into sections of current:revision:age
# This then generates a version of "(current-age).age.revision" with an
# interface version of "(current-age)"
# For example, a version of 4:0:2 would generate output such as:
# libname.so -> libname.so.2
# libname.so.2 -> libname.so.2.2.0
1.23.0 release prep (#641)
1 year ago
SET (CARES_LIB_VERSIONINFO "11:0:9")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
Basic Thread Safety (#636) c-ares does not have any concept of thread-safety. It has always been 100% up to the implementor to ensure they never call c-ares from more than one thread at a time. This patch adds basic thread-safety support, which can be disabled at compile time if not desired. It uses a single recursive mutex per channel, which should be extremely quick when uncontested so overhead should be minimal. Fixes Bug: #610 Also sets the stage to implement #611 Fix By: Brad House (@bradh352)
1 year ago
OPTION (CARES_STATIC "Build as a static library" OFF)
OPTION (CARES_SHARED "Build as a shared library" ON)
OPTION (CARES_INSTALL "Create installation targets (chain builders may want to disable this)" ON)
OPTION (CARES_STATIC_PIC "Build the static library as PIC (position independent)" OFF)
OPTION (CARES_BUILD_TESTS "Build and run tests" OFF)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
OPTION (CARES_BUILD_CONTAINER_TESTS "Build and run container tests (implies CARES_BUILD_TESTS, Linux only)" OFF)
Basic Thread Safety (#636) c-ares does not have any concept of thread-safety. It has always been 100% up to the implementor to ensure they never call c-ares from more than one thread at a time. This patch adds basic thread-safety support, which can be disabled at compile time if not desired. It uses a single recursive mutex per channel, which should be extremely quick when uncontested so overhead should be minimal. Fixes Bug: #610 Also sets the stage to implement #611 Fix By: Brad House (@bradh352)
1 year ago
OPTION (CARES_BUILD_TOOLS "Build tools" ON)
OPTION (CARES_SYMBOL_HIDING "Hide private symbols in shared libraries" OFF)
OPTION (CARES_THREADS "Build with thread-safety support" ON)
Merge pull request from GHSA-54xr-f67r-4pc4 * CARES_RANDOM_FILE should always default to /dev/urandom During cross-compilation, CARES_RANDOM_FILE may not be able to be appropriately detected, therefore we should always set it to /dev/urandom and allow the entity requesting compilation override the value. The code does appropriately fall back if CARES_RANDOM_FILE cannot be opened. * use set not option
2 years ago
SET (CARES_RANDOM_FILE "/dev/urandom" CACHE STRING "Suitable File / Device Path for entropy, such as /dev/urandom")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CMake: CXXFLAGS environment wasn't being read because C++ compiler was enabled after settings warnings.
1 year ago
# Tests require a C++ compiler
IF (CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS FALSE)
enable_language(CXX)
ENDIF ()
Loosen requirements for static c-ares library when building tests It appears that when building tests, it would hardcode enabling building of the c-ares static library. This was probably due to Windows limitations in symbol visibility. This change will use the static library if it exists for tests, always. Otherwise, it will only forcibly enable static libraries for tests on Windows. Fixes: #380 Fix By: Brad House (@bradh352)
4 years ago
# Tests require static to be enabled on Windows to be able to access otherwise hidden symbols
CMake: CXXFLAGS environment wasn't being read because C++ compiler was enabled after settings warnings.
1 year ago
IF ((CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS) AND (NOT CARES_STATIC) AND WIN32)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
SET (CARES_STATIC ON)
SET (CARES_STATIC_PIC ON)
Fix typos discovered by codespell (#634) % `codespell --ignore-words-list="aas,aci,acter,atleast,contentss,firey,fo,sais,seh,statics"` * https://pypi.org/project/codespell Fix By: Christian Clauss (@cclauss)
1 year ago
MESSAGE (WARNING "Static building was requested be disabled, but re-enabled to support tests")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ENDIF ()
CMake: CXXFLAGS environment wasn't being read because C++ compiler was enabled after settings warnings.
1 year ago
INCLUDE (EnableWarnings)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# allow linking against the static runtime library in msvc
IF (MSVC)
OPTION (CARES_MSVC_STATIC_RUNTIME "Link against the static runtime library" OFF)
IF (CARES_MSVC_STATIC_RUNTIME)
# CMAKE_CONFIGURATION_TYPES is empty on non-IDE generators (Ninja, NMake)
# and that's why we also use CMAKE_BUILD_TYPE to cover for those generators.
# For IDE generators, CMAKE_BUILD_TYPE is usually empty
FOREACH (config_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})
STRING (TOUPPER ${config_type} upper_config_type)
SET (flag_var "CMAKE_C_FLAGS_${upper_config_type}")
IF (${flag_var} MATCHES "/MD")
STRING (REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
ENDIF ()
ENDFOREACH ()
# clean up
SET (upper_config_type)
SET (config_type)
SET (flag_var)
ENDIF ()
ENDIF ()
feat: use CMake to control symbol visibility (#574) In contrast to #572 this solution does not need any extra headers. But it is also limited to GCC-like compilers. Fix By: Gregor Jasny (@gjasny)
1 year ago
IF (CARES_SYMBOL_HIDING)
IF (CMAKE_VERSION VERSION_LESS 3.12)
MESSAGE (FATAL_ERROR "Hiding symbols requires CMake 3.12")
ENDIF ()
CMAKE_POLICY (SET CMP0063 NEW)
SET (CARES_SYMBOL_SCOPE_EXTERN [=[__attribute__ ((visibility("default")))]=])
CHECK_C_SOURCE_COMPILES ("
${CARES_SYMBOL_SCOPE_EXTERN} int somefunc() { return 0; }
int main() { return somefunc(); }
" HAVE_VISIBILITY_ATTRIBUTE)
IF (NOT HAVE_VISIBILITY_ATTRIBUTE)
MESSAGE (FATAL_ERROR "C compiler does not accept visibility attribute")
ENDIF ()
ENDIF ()
CMake: don't override target output locations if not top-level CMake was unconditionally setting output locations globally, but it should not do that if it is not the top-level project (e.g. during chain building). Detect this fact and only set the output location when top level. Fixes Issue: #708 Fix By: Anthony Alayo (@anthonyalayo)
10 months ago
# Keep build organized, but only if it is the top-level project.
# CMake 3.21 or later has PROJECT_IS_TOP_LEVEL, but we aren't yet depending on
# that version.
IF (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_BINDIR}")
SET (CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}")
SET (CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}")
CMake: Fix Chain building if CMAKE runtime paths not set This fixes issues created by #708 Fix By: Brad House (@bradh352)
9 months ago
SET (CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}")
CMake: don't override target output locations if not top-level CMake was unconditionally setting output locations globally, but it should not do that if it is not the top-level project (e.g. during chain building). Detect this fact and only set the output location when top level. Fixes Issue: #708 Fix By: Anthony Alayo (@anthonyalayo)
10 months ago
ENDIF ()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Destinations for installing different kinds of targets (pass to install command).
SET (TARGETS_INST_DEST
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
CMake: fix Make install for iOS/MacOS (#395) INSTALL TARGETS were missing the BUNDLE DESTINATION Fix By: Anton Danielsson (@anton-danielsson)
4 years ago
BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR}
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
# Function in Library
# CHECK_LIBRARY_EXISTS can't be used as it will return true if the function
If chain building c-ares as part of another project, detect of res_servicename could fail (#451) If libresolv is already included with the build, c-ares wouldn't properly detect its use. May fix: #451 Fix by: Brad House (@bradh352)
3 years ago
# is found in a different required/dependent library.
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
MACRO (CARES_FUNCTION_IN_LIBRARY func lib var)
If chain building c-ares as part of another project, detect of res_servicename could fail (#451) If libresolv is already included with the build, c-ares wouldn't properly detect its use. May fix: #451 Fix by: Brad House (@bradh352)
3 years ago
SET (_ORIG_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
SET (CMAKE_REQUIRED_LIBRARIES )
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_FUNCTION_EXISTS ("${func}" "_CARES_FUNC_IN_LIB_GLOBAL_${func}")
If chain building c-ares as part of another project, detect of res_servicename could fail (#451) If libresolv is already included with the build, c-ares wouldn't properly detect its use. May fix: #451 Fix by: Brad House (@bradh352)
3 years ago
SET (CMAKE_REQUIRED_LIBRARIES "${_ORIG_CMAKE_REQUIRED_LIBRARIES}")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
IF ("${_CARES_FUNC_IN_LIB_GLOBAL_${func}}")
SET (${var} FALSE)
ELSE ()
CHECK_LIBRARY_EXISTS ("${lib}" "${func}" "" ${var})
ENDIF ()
ENDMACRO ()
# Look for dependent/required libraries
CARES_FUNCTION_IN_LIBRARY (res_servicename resolv HAVE_RES_SERVICENAME_IN_LIBRESOLV)
IF (HAVE_RES_SERVICENAME_IN_LIBRESOLV)
SET (HAVE_LIBRESOLV 1)
ENDIF ()
IF (APPLE)
CHECK_C_SOURCE_COMPILES ("
#include <stdio.h>
#include <TargetConditionals.h>
int main() {
#if TARGET_OS_IPHONE == 0
#error Not an iPhone target
#endif
return 0;
}
"
IOS)
CHECK_C_SOURCE_COMPILES ("
#include <stdio.h>
#include <TargetConditionals.h>
int main() {
#if TARGET_OS_IPHONE == 0 || __IPHONE_OS_VERSION_MIN_REQUIRED < 100000
# error Not iOS v10
#endif
return 0;
}
"
IOS_V10)
CHECK_C_SOURCE_COMPILES ("
#include <stdio.h>
#include <AvailabilityMacros.h>
#ifndef MAC_OS_X_VERSION_10_12
# define MAC_OS_X_VERSION_10_12 101200
#endif
int main() {
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
# error Not MacOSX 10.12 or higher
#endif
return 0;
}
"
MACOS_V1012)
ENDIF ()
z/OS: port (#390) Port c-ares to z/OS. Fix By: Dhrumil Rana (@dhrumilrana)
4 years ago
IF ((IOS OR APPLE OR ZOS) AND HAVE_LIBRESOLV)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
SET (CARES_USE_LIBRESOLV 1)
ENDIF()
CARES_FUNCTION_IN_LIBRARY (gethostbyname nsl HAVE_LIBNSL)
CARES_FUNCTION_IN_LIBRARY (gethostbyname socket HAVE_GHBN_LIBSOCKET)
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CARES_FUNCTION_IN_LIBRARY (gethostbyname network HAVE_LIBNETWORK)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_FUNCTION_IN_LIBRARY (socket socket HAVE_SOCKET_LIBSOCKET)
IF (HAVE_GHBN_LIBSOCKET OR HAVE_SOCKET_LIBSOCKET)
SET(HAVE_LIBSOCKET TRUE)
ENDIF ()
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CARES_FUNCTION_IN_LIBRARY (socket network HAVE_LIBNETWORK)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_FUNCTION_IN_LIBRARY (clock_gettime rt HAVE_LIBRT)
# Look for necessary includes
CHECK_INCLUDE_FILES (sys/types.h HAVE_SYS_TYPES_H)
rand: add support for getrandom() (#526) glibc provides arc4random_buf() but musl does not and /dev/urandom is not always available.
2 years ago
CHECK_INCLUDE_FILES (sys/random.h HAVE_SYS_RANDOM_H)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_INCLUDE_FILES (sys/socket.h HAVE_SYS_SOCKET_H)
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CHECK_INCLUDE_FILES (sys/sockio.h HAVE_SYS_SOCKIO_H)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_INCLUDE_FILES (arpa/inet.h HAVE_ARPA_INET_H)
CHECK_INCLUDE_FILES (arpa/nameser_compat.h HAVE_ARPA_NAMESER_COMPAT_H)
CHECK_INCLUDE_FILES (arpa/nameser.h HAVE_ARPA_NAMESER_H)
CHECK_INCLUDE_FILES (assert.h HAVE_ASSERT_H)
CHECK_INCLUDE_FILES (errno.h HAVE_ERRNO_H)
CHECK_INCLUDE_FILES (fcntl.h HAVE_FCNTL_H)
CHECK_INCLUDE_FILES (inttypes.h HAVE_INTTYPES_H)
CHECK_INCLUDE_FILES (limits.h HAVE_LIMITS_H)
CHECK_INCLUDE_FILES (malloc.h HAVE_MALLOC_H)
CHECK_INCLUDE_FILES (memory.h HAVE_MEMORY_H)
CHECK_INCLUDE_FILES (netdb.h HAVE_NETDB_H)
CHECK_INCLUDE_FILES (netinet/in.h HAVE_NETINET_IN_H)
CHECK_INCLUDE_FILES (net/if.h HAVE_NET_IF_H)
CHECK_INCLUDE_FILES (signal.h HAVE_SIGNAL_H)
CHECK_INCLUDE_FILES (socket.h HAVE_SOCKET_H)
CHECK_INCLUDE_FILES (stdbool.h HAVE_STDBOOL_H)
CHECK_INCLUDE_FILES (stdint.h HAVE_STDINT_H)
CHECK_INCLUDE_FILES (stdlib.h HAVE_STDLIB_H)
CHECK_INCLUDE_FILES (strings.h HAVE_STRINGS_H)
CHECK_INCLUDE_FILES (string.h HAVE_STRING_H)
CHECK_INCLUDE_FILES (stropts.h HAVE_STROPTS_H)
CHECK_INCLUDE_FILES (sys/ioctl.h HAVE_SYS_IOCTL_H)
CHECK_INCLUDE_FILES (sys/param.h HAVE_SYS_PARAM_H)
CHECK_INCLUDE_FILES (sys/select.h HAVE_SYS_SELECT_H)
CHECK_INCLUDE_FILES (sys/stat.h HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILES (sys/time.h HAVE_SYS_TIME_H)
CHECK_INCLUDE_FILES (sys/uio.h HAVE_SYS_UIO_H)
getrandom() may require sys/random.h on some systems There is a reported build issue where getrandom() is detected but compile fails due to a missing prototype. This commit attempts to resolve that issue. Fixes Bug: #665 Fix By: Brad House (@bradh352)
12 months ago
CHECK_INCLUDE_FILES (sys/random.h HAVE_SYS_RANDOM_H)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_INCLUDE_FILES (time.h HAVE_TIME_H)
CHECK_INCLUDE_FILES (dlfcn.h HAVE_DLFCN_H)
CHECK_INCLUDE_FILES (unistd.h HAVE_UNISTD_H)
properly detect netinet/tcp.h on openbsd
4 years ago
# On OpenBSD, you must include sys/types.h before netinet/tcp.h
IF (HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILES ("sys/types.h;netinet/tcp.h" HAVE_NETINET_TCP_H)
ELSE ()
CHECK_INCLUDE_FILES (netinet/tcp.h HAVE_NETINET_TCP_H)
ENDIF ()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Include order matters for these windows files.
CMake: Fix build in cygwin (#422) As cygwin environment has both socket.h and winsock2.h headers check WIN32 not to include the later one here Fix By: Biswapriyo Nath (@Biswa96)
3 years ago
# As cygwin environment has both socket.h and winsock2.h
# headers check WIN32 not to include the later one here
IF (WIN32)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_INCLUDE_FILES ("winsock2.h;windows.h" HAVE_WINSOCK2_H)
CHECK_INCLUDE_FILES ("winsock2.h;ws2tcpip.h;windows.h" HAVE_WS2TCPIP_H)
Fix Windows UWP (Store) building and add to CI/CD (#627) When building for UWP (WindowsStore), additional headers are needed and some functions are not available. This also adds AppVeyor CI/CD support to catch these issues in the future. Fix By: Deal (@halx99) and Brad House (@bradh352)
1 year ago
CHECK_INCLUDE_FILES ("winsock2.h;iphlpapi.h;windows.h" HAVE_IPHLPAPI_H)
CHECK_INCLUDE_FILES ("winsock2.h;netioapi.h;windows.h" HAVE_NETIOAPI_H)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_INCLUDE_FILES ("winsock.h;windows.h" HAVE_WINSOCK_H)
CHECK_INCLUDE_FILES (windows.h HAVE_WINDOWS_H)
CMake: Fix build in cygwin (#422) As cygwin environment has both socket.h and winsock2.h headers check WIN32 not to include the later one here Fix By: Biswapriyo Nath (@Biswa96)
3 years ago
ENDIF ()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Set system-specific compiler flags
IF (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
LIST (APPEND SYSFLAGS -D_DARWIN_C_SOURCE)
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "Linux")
Enable system extensions Certain defines are needed on some systems to enable functionality like pthread recursive mutexes. Fixes #644 Fix By: Brad House (@bradh352)
1 year ago
LIST (APPEND SYSFLAGS -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
Enable system extensions Certain defines are needed on some systems to enable functionality like pthread recursive mutexes. Fixes #644 Fix By: Brad House (@bradh352)
1 year ago
LIST (APPEND SYSFLAGS -D__EXTENSIONS__ -D_REENTRANT -D_XOPEN_SOURCE=700)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX")
Enable system extensions Certain defines are needed on some systems to enable functionality like pthread recursive mutexes. Fixes #644 Fix By: Brad House (@bradh352)
1 year ago
LIST (APPEND SYSFLAGS -D_ALL_SOURCE -D_XOPEN_SOURCE=700 -D_USE_IRS)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
# Don't define _XOPEN_SOURCE on FreeBSD, it actually reduces visibility instead of increasing it
ELSEIF (WIN32)
AppVeyor: update compiler versions, use Msys2, and Windows fixes (#593) AppVeyor was using Visual Studio 2015 along with old versions of MinGW. Update to the latest AppVeyor provides and also add an MSYS2 build test using MinGW which will use the bleeding edge version. When researching #590 this also uncovered a bug in cmake not properly detecting if_indextoname() on windows. This has been corrected as well as the underlying issue reported in #590. Fix By: Brad House (@bradh352) and Jonas Kvinge (@jonaski)
1 year ago
LIST (APPEND SYSFLAGS -DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -D_WIN32_WINNT=0x0602)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ENDIF ()
ADD_DEFINITIONS(${SYSFLAGS})
# Tell C-Ares about libraries to depend on
IF (HAVE_LIBRESOLV)
LIST (APPEND CARES_DEPENDENT_LIBS resolv)
ENDIF ()
IF (HAVE_LIBNSL)
LIST (APPEND CARES_DEPENDENT_LIBS nsl)
ENDIF ()
IF (HAVE_LIBSOCKET)
LIST (APPEND CARES_DEPENDENT_LIBS socket)
ENDIF ()
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
IF (HAVE_LIBNETWORK)
LIST (APPEND CARES_DEPENDENT_LIBS network)
ENDIF ()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
IF (HAVE_LIBRT)
LIST (APPEND CARES_DEPENDENT_LIBS rt)
ENDIF ()
IF (WIN32)
RFC6761: special case "localhost" (#430) As per RFC6761 Section 6.3, "localhost" lookups need to be special cased to return loopback addresses, and not forward queries to recursive dns servers. We first look up via files (/etc/hosts or equivalent), and if that fails, we then attempt a system-specific address enumeration for loopback addresses (currently Windows-only), and finally fallback to ::1 and 127.0.0.1. Fix By: Brad House (@bradh352) Fixes Bug: #399
3 years ago
LIST (APPEND CARES_DEPENDENT_LIBS ws2_32 advapi32 iphlpapi)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
ENDIF ()
# When checking for symbols, we need to make sure we set the proper
# headers, libraries, and definitions for the detection to work properly
# CMAKE_REQUIRED_DEFINITIONS, CMAKE_REQUIRED_LIBRARIES, and
# CMAKE_EXTRA_INCLUDE_FILES. When we're done with the detection, we'll
# unset them.
SET (CMAKE_REQUIRED_DEFINITIONS ${SYSFLAGS})
LIST (APPEND CMAKE_REQUIRED_LIBRARIES ${CARES_DEPENDENT_LIBS})
MACRO (CARES_EXTRAINCLUDE_IFSET var include)
IF (${var})
LIST (APPEND CMAKE_EXTRA_INCLUDE_FILES ${include})
ENDIF ()
ENDMACRO ()
CARES_EXTRAINCLUDE_IFSET (HAVE_STDBOOL_H stdbool.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_TYPES_H sys/types.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_ARPA_INET_H arpa/inet.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_ARPA_NAMESER_H arpa/nameser.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_NETDB_H netdb.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_NET_IF_H net/if.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET_IN_H netinet/in.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET_TCP_H netinet/tcp.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_SIGNAL_H signal.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_STDLIB_H stdlib.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_STRING_H string.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_STRINGS_H strings.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_IOCTL_H sys/ioctl.h)
rand: add support for getrandom() (#526) glibc provides arc4random_buf() but musl does not and /dev/urandom is not always available.
2 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_RANDOM_H sys/random.h)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SELECT_H sys/select.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SOCKET_H sys/socket.h)
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SOCKIO_H sys/sockio.h)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_TIME_H sys/time.h)
Replace hosts parser, add caching capabilities (#591) HOSTS FILE PROCESSING OVERVIEW ============================== The hosts file on the system contains static entries to be processed locally rather than querying the nameserver. Each row is an IP address followed by a list of space delimited hostnames that match the ip address. This is used for both forward and reverse lookups. We are caching the entire parsed hosts file for performance reasons. Some files may be quite sizable and as per Issue #458 can approach 1/2MB in size, and the parse overhead on a rapid succession of queries can be quite large. The entries are stored in forwards and backwards hashtables so we can get O(1) performance on lookup. The file is cached until the file modification timestamp changes (or 60s if there is no implemented stat() capability). The hosts file processing is quite unique. It has to merge all related hosts and ips into a single entry due to file formatting requirements. For instance take the below: ``` 127.0.0.1 localhost.localdomain localhost ::1 localhost.localdomain localhost 192.168.1.1 host.example.com host 192.168.1.5 host.example.com host 2620:1234::1 host.example.com host6.example.com host6 host ``` This will yield 2 entries. 1) ips: `127.0.0.1,::1` hosts: `localhost.localdomain,localhost` 2) ips: `192.168.1.1,192.168.1.5,2620:1234::1` hosts: `host.example.com,host,host6.example.com,host6` It could be argued that if searching for `192.168.1.1` that the `host6` hostnames should not be returned, but this implementation will return them since they are related (both ips have the fqdn of host.example.com). It is unlikely this will matter in the real world. Fix By: Brad House (@bradh352)
1 year ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_STAT_H sys/stat.h)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_UIO_H sys/uio.h)
getrandom() may require sys/random.h on some systems There is a reported build issue where getrandom() is detected but compile fails due to a missing prototype. This commit attempts to resolve that issue. Fixes Bug: #665 Fix By: Brad House (@bradh352)
12 months ago
CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_RANDOM_H sys/random.h)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_TIME_H time.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_FCNTL_H fcntl.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_UNISTD_H unistd.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_WINSOCK2_H winsock2.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_WS2TCPIP_H ws2tcpip.h)
AppVeyor: update compiler versions, use Msys2, and Windows fixes (#593) AppVeyor was using Visual Studio 2015 along with old versions of MinGW. Update to the latest AppVeyor provides and also add an MSYS2 build test using MinGW which will use the bleeding edge version. When researching #590 this also uncovered a bug in cmake not properly detecting if_indextoname() on windows. This has been corrected as well as the underlying issue reported in #590. Fix By: Brad House (@bradh352) and Jonas Kvinge (@jonaski)
1 year ago
CARES_EXTRAINCLUDE_IFSET (HAVE_IPHLPAPI_H iphlpapi.h)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CARES_EXTRAINCLUDE_IFSET (HAVE_WINDOWS_H windows.h)
# Check Types
# CHECK_TYPE_SIZE can't be used to see if a type exists because on Apple when
# building multi-arch, it will throw an error. So we need to wrap
# CHECK_C_SOURCE_COMPILES for our tests.
MACRO (CARES_TYPE_EXISTS type var)
SET(_CARES_C_SOURCE "
#include <stdio.h>
#include <stdlib.h>
")
FOREACH(_C_HEADER ${CMAKE_EXTRA_INCLUDE_FILES})
SET(_CARES_C_SOURCE "${_CARES_C_SOURCE}
#include <${_C_HEADER}>")
ENDFOREACH(_C_HEADER)
SET(_CARES_C_SOURCE "${_CARES_C_SOURCE}
int main() {
${type} var_exists;
(void)var_exists;
return 0;
}
")
CHECK_C_SOURCE_COMPILES ("${_CARES_C_SOURCE}" ${var})
ENDMACRO ()
CARES_TYPE_EXISTS (socklen_t HAVE_SOCKLEN_T)
CARES_TYPE_EXISTS (SOCKET HAVE_TYPE_SOCKET)
CARES_TYPE_EXISTS (bool HAVE_BOOL_T)
CARES_TYPE_EXISTS (ssize_t HAVE_SSIZE_T)
CARES_TYPE_EXISTS ("long long" HAVE_LONGLONG)
CARES_TYPE_EXISTS (sig_atomic_t HAVE_SIG_ATOMIC_T)
CARES_TYPE_EXISTS ("struct addrinfo" HAVE_STRUCT_ADDRINFO)
CARES_TYPE_EXISTS ("struct in6_addr" HAVE_STRUCT_IN6_ADDR)
CARES_TYPE_EXISTS ("struct sockaddr_in6" HAVE_STRUCT_SOCKADDR_IN6)
CARES_TYPE_EXISTS ("struct sockaddr_storage" HAVE_STRUCT_SOCKADDR_STORAGE)
CARES_TYPE_EXISTS ("struct timeval" HAVE_STRUCT_TIMEVAL)
# Check for preprocessor defines
CHECK_SYMBOL_EXISTS (AF_INET6 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_AF_INET6)
CHECK_SYMBOL_EXISTS (O_NONBLOCK "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_O_NONBLOCK)
CHECK_SYMBOL_EXISTS (FIONBIO "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FIONBIO)
CHECK_SYMBOL_EXISTS (SIOCGIFADDR "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTL_SIOCGIFADDR)
CHECK_SYMBOL_EXISTS (MSG_NOSIGNAL "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_MSG_NOSIGNAL)
CHECK_SYMBOL_EXISTS (PF_INET6 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PF_INET6)
CHECK_SYMBOL_EXISTS (SO_NONBLOCK "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SO_NONBLOCK)
# XCode v8 bug: iOS when targeting less than v10, or MacOS when targeting less than v10.12 will
# say clock_gettime exists, it is a weak symbol that only exists in iOS10/MacOS10.12 and will
# cause a crash at runtime when running on older versions. Skip finding CLOCK_MONOTONIC on older
# OS's.
IF ((NOT APPLE) OR IOS_V10 OR MACOS_V1012)
CHECK_SYMBOL_EXISTS (CLOCK_MONOTONIC "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOCK_GETTIME_MONOTONIC)
ENDIF ()
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" sin6_scope_id "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID LANGUAGE C)
# Check for "LL" numeric suffix support
CHECK_C_SOURCE_COMPILES ("int main() { int n=1234LL; return 0; }" HAVE_LL)
CHECK_SYMBOL_EXISTS (bitncmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_BITNCMP)
CHECK_SYMBOL_EXISTS (closesocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOSESOCKET)
CHECK_SYMBOL_EXISTS (CloseSocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOSESOCKET_CAMEL)
CHECK_SYMBOL_EXISTS (connect "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CONNECT)
CHECK_SYMBOL_EXISTS (fcntl "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FCNTL)
CHECK_SYMBOL_EXISTS (freeaddrinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FREEADDRINFO)
CHECK_SYMBOL_EXISTS (getaddrinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETADDRINFO)
CHECK_SYMBOL_EXISTS (getenv "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETENV)
CHECK_SYMBOL_EXISTS (gethostbyaddr "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTBYADDR)
CHECK_SYMBOL_EXISTS (gethostbyname "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTBYNAME)
CHECK_SYMBOL_EXISTS (gethostname "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTNAME)
CHECK_SYMBOL_EXISTS (getnameinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETNAMEINFO)
rand: add support for getrandom() (#526) glibc provides arc4random_buf() but musl does not and /dev/urandom is not always available.
2 years ago
CHECK_SYMBOL_EXISTS (getrandom "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETRANDOM)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
CHECK_SYMBOL_EXISTS (getservbyport_r "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETSERVBYPORT_R)
CHECK_SYMBOL_EXISTS (getservbyname_r "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETSERVBYNAME_R)
CHECK_SYMBOL_EXISTS (gettimeofday "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETTIMEOFDAY)
CHECK_SYMBOL_EXISTS (if_indextoname "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IF_INDEXTONAME)
CHECK_SYMBOL_EXISTS (inet_net_pton "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_NET_PTON)
IF (NOT WIN32)
# Disabled on Windows, because these functions are only really supported on Windows
# Vista or newer (_WIN32_WINNT >= 0x0600). Older versions of Windows may provide
# them as experimental non-working features, so we have to disable them manually.
CHECK_SYMBOL_EXISTS (inet_ntop "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_NTOP)
CHECK_SYMBOL_EXISTS (inet_pton "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_PTON)
ENDIF ()
CHECK_SYMBOL_EXISTS (ioctl "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTL)
CHECK_SYMBOL_EXISTS (ioctlsocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTLSOCKET)
CHECK_SYMBOL_EXISTS (IoctlSocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTLSOCKET_CAMEL)
CHECK_SYMBOL_EXISTS (recv "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_RECV)
CHECK_SYMBOL_EXISTS (recvfrom "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_RECVFROM)
CHECK_SYMBOL_EXISTS (send "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SEND)
CHECK_SYMBOL_EXISTS (setsockopt "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SETSOCKOPT)
CHECK_SYMBOL_EXISTS (socket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKET)
CHECK_SYMBOL_EXISTS (strcasecmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRCASECMP)
CHECK_SYMBOL_EXISTS (strcmpi "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRCMPI)
CHECK_SYMBOL_EXISTS (strdup "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRDUP)
CHECK_SYMBOL_EXISTS (stricmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRICMP)
CHECK_SYMBOL_EXISTS (strncasecmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNCASECMP)
CHECK_SYMBOL_EXISTS (strncmpi "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNCMPI)
CHECK_SYMBOL_EXISTS (strnicmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNICMP)
CHECK_SYMBOL_EXISTS (writev "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_WRITEV)
Merge pull request from GHSA-8r8p-23f3-64c2 * segment random number generation into own file * abstract random code to make it more modular so we can have multiple backends * rand: add support for arc4random_buf() and also direct CARES_RANDOM_FILE reading * autotools: fix detection of arc4random_buf * rework initial rc4 seed for PRNG as last fallback * rc4: more proper implementation, simplified for clarity * clarifications
2 years ago
CHECK_SYMBOL_EXISTS (arc4random_buf "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_ARC4RANDOM_BUF)
Replace hosts parser, add caching capabilities (#591) HOSTS FILE PROCESSING OVERVIEW ============================== The hosts file on the system contains static entries to be processed locally rather than querying the nameserver. Each row is an IP address followed by a list of space delimited hostnames that match the ip address. This is used for both forward and reverse lookups. We are caching the entire parsed hosts file for performance reasons. Some files may be quite sizable and as per Issue #458 can approach 1/2MB in size, and the parse overhead on a rapid succession of queries can be quite large. The entries are stored in forwards and backwards hashtables so we can get O(1) performance on lookup. The file is cached until the file modification timestamp changes (or 60s if there is no implemented stat() capability). The hosts file processing is quite unique. It has to merge all related hosts and ips into a single entry due to file formatting requirements. For instance take the below: ``` 127.0.0.1 localhost.localdomain localhost ::1 localhost.localdomain localhost 192.168.1.1 host.example.com host 192.168.1.5 host.example.com host 2620:1234::1 host.example.com host6.example.com host6 host ``` This will yield 2 entries. 1) ips: `127.0.0.1,::1` hosts: `localhost.localdomain,localhost` 2) ips: `192.168.1.1,192.168.1.5,2620:1234::1` hosts: `host.example.com,host,host6.example.com,host6` It could be argued that if searching for `192.168.1.1` that the `host6` hostnames should not be returned, but this implementation will return them since they are related (both ips have the fqdn of host.example.com). It is unlikely this will matter in the real world. Fix By: Brad House (@bradh352)
1 year ago
CHECK_SYMBOL_EXISTS (stat "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STAT)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# On Android, the system headers may define __system_property_get(), but excluded
# from libc. We need to perform a link test instead of a header/symbol test.
CHECK_FUNCTION_EXISTS (__system_property_get HAVE___SYSTEM_PROPERTY_GET)
# Unset temporary data
SET (CMAKE_EXTRA_INCLUDE_FILES)
SET (CMAKE_REQUIRED_DEFINITIONS)
SET (CMAKE_REQUIRED_LIBRARIES)
Basic Thread Safety (#636) c-ares does not have any concept of thread-safety. It has always been 100% up to the implementor to ensure they never call c-ares from more than one thread at a time. This patch adds basic thread-safety support, which can be disabled at compile time if not desired. It uses a single recursive mutex per channel, which should be extremely quick when uncontested so overhead should be minimal. Fixes Bug: #610 Also sets the stage to implement #611 Fix By: Brad House (@bradh352)
1 year ago
################################################################################
# Threading Support
#
IF (CARES_THREADS)
IF (WIN32)
# Do nothing, always has threads
ELSE ()
# Need to prefer pthreads on platforms that may have more threading choices
# (e.g. Solaris)
SET (CMAKE_THREAD_PREFER_PTHREAD TRUE)
FIND_PACKAGE (Threads)
IF (Threads_FOUND)
# Fix solaris9 bug due to libc having pthread_create() stubs that always fail. CMake
# doesn't realize that the real pthread functions aren't in libc, so sets the pthread
# library CAKE_THREAD_LIBS_INIT variable to blank instead of to the correct "-lpthread".
IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND NOT CMAKE_THREAD_LIBS_INIT)
SET (CMAKE_THREAD_LIBS_INIT "-lpthread")
ENDIF ()
# PThread functions.
CHECK_INCLUDE_FILES (pthread.h HAVE_PTHREAD_H)
CHECK_INCLUDE_FILES (pthread_np.h HAVE_PTHREAD_NP_H)
CARES_EXTRAINCLUDE_IFSET (HAVE_PTHREAD_H pthread.h)
CARES_EXTRAINCLUDE_IFSET (HAVE_PTHREAD_NP_H pthread_np.h)
CHECK_SYMBOL_EXISTS (pthread_init "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PTHREAD_INIT)
# Make sure libcares.pc.cmake knows about thread libraries on static builds
LIST (APPEND CARES_DEPENDENT_LIBS ${CMAKE_THREAD_LIBS_INIT})
ELSE ()
MESSAGE (WARNING "Threading support not found, disabling...")
SET (CARES_THREADS OFF)
ENDIF ()
ENDIF ()
ENDIF ()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
################################################################################
# recv, recvfrom, send, getnameinfo, gethostname
# ARGUMENTS AND RETURN VALUES
#
# The AutoTools build tries to be really thorough here. So much so that it
# takes forever. We really don't want to do that. Lets make some educated
# guesses based on datatypes we have available, and for others, use some 'sane'
# defaults. This should be much quicker and nearly as accurate ... and even
# if not, it probably won't matter in the least.
IF (HAVE_SSIZE_T AND HAVE_SOCKLEN_T)
# If we have ssize_t and socklen_t, the API is usually sane and uses ssize_t and size_t for lengths
SET (RECVFROM_TYPE_RETV ssize_t)
SET (RECVFROM_TYPE_ARG3 size_t)
ELSE ()
SET (RECVFROM_TYPE_RETV int)
SET (RECVFROM_TYPE_ARG3 int)
ENDIF ()
IF (HAVE_TYPE_SOCKET)
# If the SOCKET type is defined, it uses socket ... should be windows only
SET (RECVFROM_TYPE_ARG1 SOCKET)
ELSE ()
SET (RECVFROM_TYPE_ARG1 int)
ENDIF()
IF (HAVE_SOCKLEN_T)
# If we have socklen_t the APIs pretty much always actually use it
SET (RECVFROM_TYPE_ARG6 "socklen_t *")
SET (GETNAMEINFO_TYPE_ARG2 socklen_t)
SET (GETNAMEINFO_TYPE_ARG46 socklen_t)
ELSE ()
SET (RECVFROM_TYPE_ARG6 "int *")
SET (GETNAMEINFO_TYPE_ARG2 int)
SET (GETNAMEINFO_TYPE_ARG46 int)
ENDIF ()
IF (WIN32)
SET (RECV_TYPE_ARG2 "char *")
ELSE ()
SET (RECV_TYPE_ARG2 "void *")
ENDIF ()
# Functions are typically consistent so the equivalent fields map ... equivalently
SET (RECV_TYPE_RETV ${RECVFROM_TYPE_RETV})
SET (SEND_TYPE_RETV ${RECVFROM_TYPE_RETV})
SET (RECV_TYPE_ARG1 ${RECVFROM_TYPE_ARG1})
SET (RECVFROM_TYPE_ARG2 ${RECV_TYPE_ARG2})
SET (SEND_TYPE_ARG1 ${RECVFROM_TYPE_ARG1})
SET (RECV_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})
SET (SEND_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})
SET (GETHOSTNAME_TYPE_ARG2 ${RECVFROM_TYPE_ARG3})
# These should always be "sane" values to use always
SET (RECVFROM_QUAL_ARG5 )
SET (RECVFROM_TYPE_ARG4 int)
SET (RECVFROM_TYPE_ARG5 "struct sockaddr *")
SET (RECV_TYPE_ARG4 int)
SET (GETNAMEINFO_TYPE_ARG1 "struct sockaddr *")
SET (GETNAMEINFO_TYPE_ARG7 int)
SET (SEND_TYPE_ARG2 "void *")
SET (SEND_TYPE_ARG4 int)
################################################################################
# HAVE_CXX11 ??
# HAVE_SIG_ATOMIC_T_VOLATILE ??
# Set a few variables by hand that C-Ares wants, logically, based on detection
# data.
IF (HAVE_SOCKLEN_T)
Set (CARES_TYPEOF_ARES_SOCKLEN_T "socklen_t")
ELSE ()
Set (CARES_TYPEOF_ARES_SOCKLEN_T "int")
ENDIF ()
IF (HAVE_SSIZE_T)
Set (CARES_TYPEOF_ARES_SSIZE_T "ssize_t")
ELSE ()
IF (WIN32)
IF ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
Set (CARES_TYPEOF_ARES_SSIZE_T "__int64")
ELSE ()
Set (CARES_TYPEOF_ARES_SSIZE_T "int")
ENDIF ()
ELSE ()
Set (CARES_TYPEOF_ARES_SSIZE_T "long")
ENDIF ()
ENDIF ()
IF (HAVE_FCNTL AND HAVE_O_NONBLOCK)
SET (HAVE_FCNTL_O_NONBLOCK 1)
ENDIF ()
IF (HAVE_IOCTL AND HAVE_FIONBIO)
SET (HAVE_IOCTL_FIONBIO 1)
ENDIF ()
IF (HAVE_IOCTLSOCKET AND HAVE_FIONBIO)
SET (HAVE_IOCTLSOCKET_FIONBIO 1)
ENDIF ()
IF (HAVE_IOCTLSOCKET_CAMEL AND HAVE_FIONBIO)
SET (HAVE_IOCTLSOCKET_CAMEL_FIONBIO 1)
ENDIF ()
IF (HAVE_GETADDRINFO)
IF (CMAKE_SYSTEM_NAME STREQUAL "Darwin" OR
CMAKE_SYSTEM_NAME STREQUAL "HPUX" OR
CMAKE_SYSTEM_NAME STREQUAL "NetBSD" OR
CMAKE_SYSTEM_NAME STREQUAL "SunOS" OR
CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR
CMAKE_SYSTEM_NAME STREQUAL "AIX" OR
WIN32)
SET (HAVE_GETADDRINFO_THREADSAFE 1)
ENDIF ()
ENDIF ()
IF (HAVE_TIME_H AND HAVE_SYS_TIME_H)
SET (TIME_WITH_SYS_TIME 1)
ENDIF ()
IF (HAVE_GETSERVBYPORT_R)
# TODO : Should probably autodetect
IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
SET (GETSERVBYPORT_R_ARGS 5)
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX" OR
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" OR
HAIKU)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
SET (GETSERVBYPORT_R_ARGS 4)
ELSE ()
# Probably linux
SET (GETSERVBYPORT_R_ARGS 6)
ENDIF ()
ENDIF ()
IF (HAVE_GETSERVBYNAME_R)
# TODO : Should probably autodetect
IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
SET (GETSERVBYNAME_R_ARGS 5)
ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX" OR
Haiku: port (#431) Port for Haiku. Slight CMake changes, header changes, and resolv.conf/hosts paths specific to Haiku. Port By: Jérôme Duval (@korli)
3 years ago
CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" OR
HAIKU)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
SET (GETSERVBYNAME_R_ARGS 4)
ELSE ()
# Probably linux
SET (GETSERVBYNAME_R_ARGS 6)
ENDIF ()
ENDIF ()
# Set some aliases used for ares_build.h
IF (HAVE_SYS_TYPES_H)
SET (CARES_HAVE_SYS_TYPES_H 1)
ENDIF ()
rand: add support for getrandom() (#526) glibc provides arc4random_buf() but musl does not and /dev/urandom is not always available.
2 years ago
IF (HAVE_SYS_RANDOM_H)
SET (CARES_HAVE_SYS_RANDOM_H 1)
ENDIF()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
IF (HAVE_SYS_SOCKET_H)
SET (CARES_HAVE_SYS_SOCKET_H 1)
ENDIF()
IF (HAVE_WS2TCPIP_H)
SET (CARES_HAVE_WS2TCPIP_H 1)
ENDIF()
IF (HAVE_WINSOCK2_H)
SET (CARES_HAVE_WINSOCK2_H 1)
ENDIF()
IF (HAVE_WINDOWS_H)
SET (CARES_HAVE_WINDOWS_H 1)
ENDIF()
Provide ares_nameser.h as a public interface (#417) NodeJS needs ares_nameser.h as a pubic header. Fixes: #415 Fix By: Felix Yan (@felixonmars)
3 years ago
IF (HAVE_ARPA_NAMESER_H)
SET (CARES_HAVE_ARPA_NAMESER_H 1)
ENDIF()
IF (HAVE_ARPA_NAMESER_COMPAT_H)
SET (CARES_HAVE_ARPA_NAMESER_COMPAT_H 1)
ENDIF()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
# Record toplevel CMakeLists.txt path
set(CARES_TOPLEVEL_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# TRANSFORM_MAKEFILE_INC
#
# This function consumes the "Makefile.inc" autotools file, and converts it into
# "Makefile.inc.cmake", a cmake include file; transforming this:
#
# CSOURCES = ares__close_sockets.c \
# ares__get_hostent.c \
# ares__read_line.c \
# ...
#
# into this:
#
# SET (CSOURCES
# ares__close_sockets.c
# ares__get_hostent.c
# ares__read_line.c
# ...
function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)
file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)
string(REPLACE "$(top_srcdir)" "\${PROJECT_SOURCE_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
string(REPLACE "$(top_builddir)" "\${PROJECT_BINARY_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
string(REGEX REPLACE "\\\\\n" "ß!ß" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
string(REPLACE "ß!ß" "\n" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
string(REGEX REPLACE "\\$\\(([a-zA-Z_][a-zA-Z0-9_]*)\\)" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT}) # Replace $() with ${}
string(REGEX REPLACE "@([a-zA-Z_][a-zA-Z0-9_]*)@" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT}) # Replace @@ with ${}, even if that may not be read by CMake scripts.
file(WRITE ${OUTPUT_FILE} ${MAKEFILE_INC_TEXT})
endfunction()
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
# Directory for includes
ADD_SUBDIRECTORY (include)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
# Directory for lib and tools
ADD_SUBDIRECTORY (src)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
# Docs
ADD_SUBDIRECTORY (docs)
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
# Tests
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
IF (CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS)
ENABLE_TESTING ()
ADD_SUBDIRECTORY (test)
ENDIF ()
# Export targets
IF (CARES_INSTALL)
SET (CMAKECONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
INCLUDE (CMakePackageConfigHelpers)
CONFIGURE_PACKAGE_CONFIG_FILE (${PROJECT_NAME}-config.cmake.in ${PROJECT_NAME}-config.cmake
INSTALL_DESTINATION ${CMAKECONFIG_INSTALL_DIR}
PATH_VARS CMAKE_INSTALL_INCLUDEDIR
NO_CHECK_REQUIRED_COMPONENTS_MACRO
)
WRITE_BASIC_PACKAGE_VERSION_FILE(${PROJECT_NAME}-config-version.cmake VERSION "${CARES_VERSION}" COMPATIBILITY SameMajorVersion)
INSTALL (EXPORT ${PROJECT_NAME}-targets COMPONENT Devel DESTINATION ${CMAKECONFIG_INSTALL_DIR} NAMESPACE ${PROJECT_NAME}::)
INSTALL (FILES "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config.cmake" "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake" COMPONENT Devel DESTINATION ${CMAKECONFIG_INSTALL_DIR})
# pkgconfig support
IF (NOT CARES_SHARED)
SET (CPPFLAG_CARES_STATICLIB "-DCARES_STATICLIB")
FOREACH (LIB ${CARES_DEPENDENT_LIBS})
SET (CARES_PRIVATE_LIBS "${CARES_PRIVATE_LIBS} -l${LIB}")
ENDFOREACH ()
ENDIF ()
CONFIGURE_FILE("libcares.pc.cmake" "libcares.pc" @ONLY)
INSTALL (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcares.pc" COMPONENT Devel DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
ENDIF ()
Reorganize source tree (#349) Originally started by Daniel Stenberg (@bagder) with #123, this patch reorganizes the c-ares source tree to have a more modern layout. It also fixes out of tree builds for autotools, and automatically builds the tests if tests are enabled. All tests are passing which tests each of the supported build systems (autotools, cmake, nmake, mingw gmake). There may be some edge cases that will have to be caught later on for things I'm not aware of. Fix By: Brad House (@bradh352)
4 years ago
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Legacy chain-building variables (provided for compatibility with old code).
# Don't use these, external code should be updated to refer to the aliases directly (e.g., Cares::cares).
SET (CARES_FOUND 1 CACHE INTERNAL "CARES LIBRARY FOUND")
SET (CARES_LIBRARIES ${PROJECT_NAME}::cares CACHE INTERNAL "CARES LIBRARIES")
IF (CARES_INSTALL)
# Package creation
set( CPACK_PACKAGE_NAME ${PROJECT_NAME} )
set( CPACK_PACKAGE_VENDOR "Daniel Stenberg" ) # Github project owner
set( CPACK_PACKAGE_DESCRIPTION_SUMMARY "A C library for asynchronous DNS requests" )
domain: update to use c-ares.org Closes #423
3 years ago
set( CPACK_PACKAGE_HOMEPAGE_URL "https://c-ares.org/" )
set( CPACK_PACKAGE_CONTACT "https://c-ares.org/" )
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
set( CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR} )
set( CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR} )
set( CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH} )
set( CPACK_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH} )
set( CPACK_PACKAGE_INSTALL_DIRECTORY ${PROJECT_NAME} )
set( CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.md" )
set( CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README.md" )
set( CPACK_COMPONENT_Library_DISPLAY_NAME "c-ares Library" )
set( CPACK_COMPONENT_Library_DESCRIPTION "The c-ares binary library." )
set( CPACK_COMPONENT_Library_REQUIRED 1 )
set( CPACK_COMPONENT_Devel_DISPLAY_NAME "c-ares Development Files" )
set( CPACK_COMPONENT_Devel_DESCRIPTION "Development files for compiling against c-ares." )
set( CPACK_COMPONENT_Devel_REQUIRED 0 )
IF (CARES_BUILD_TOOLS)
set( CPACK_COMPONENT_Tools_DISPLAY_NAME "c-ares Tools" )
set( CPACK_COMPONENT_Tools_DESCRIPTION "Tools for using c-ares." )
set( CPACK_COMPONENT_Tools_REQUIRED 0 )
ENDIF ()
if( ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" )
if ( "${CPACK_PACKAGE_ARCHITECTURE}" STREQUAL "" )
Fix cross-compilation from Windows to Linux due to CPACK logic (#436) When determining value for CPACK_PACKAGE_ARCHITECTURE, prefer to use value from CMAKE_SYSTEM_PROCESSOR before falling back to uname output. Additionally, if building from a Windows host, emit a fatal error instead of attempting to call uname. Fix By: Bobby Reynolds (@reynoldsbd)
3 years ago
set( CPACK_PACKAGE_ARCHITECTURE "${CMAKE_SYSTEM_PROCESSOR}" )
endif()
if ( "${CPACK_PACKAGE_ARCHITECTURE}" STREQUAL "" )
if ( "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Windows" )
message( FATAL_ERROR "Failed to determine CPACK_PACKAGE_ARCHITECTURE. Is CMAKE_SYSTEM_PROCESSOR set?" )
endif()
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
# Note: the architecture should default to the local architecture, but it
# in fact comes up empty. We call `uname -m` to ask the kernel instead.
EXECUTE_PROCESS( COMMAND uname -m COMMAND tr -d '\n' OUTPUT_VARIABLE CPACK_PACKAGE_ARCHITECTURE )
endif()
set( CPACK_INCLUDE_TOPLEVEL_DIRECTORY 1 )
set( CPACK_PACKAGE_RELEASE 1 )
# RPM - https://cmake.org/cmake/help/latest/cpack_gen/rpm.html
set( CPACK_RPM_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE} )
set( CPACK_RPM_PACKAGE_ARCHITECTURE ${CPACK_PACKAGE_ARCHITECTURE} )
set( CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION_SUMMARY} )
set( CPACK_RPM_PACKAGE_URL ${CPACK_PACKAGE_HOMEPAGE_URL} )
set( CPACK_RPM_PACKAGE_LICENSE "MIT" )
set( CPACK_RPM_COMPONENT_INSTALL 1 )
set( CPACK_RPM_COMPRESSION_TYPE "xz" )
set( CPACK_RPM_PACKAGE_AUTOPROV 1 )
set( CPACK_RPM_Library_PACKAGE_SUMMARY ${CPACK_COMPONENT_Library_DESCRIPTION} )
set( CPACK_RPM_Library_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )
set( CPACK_RPM_Library_PACKAGE_NAME "libcares${CARES_LIB_VERSION_MAJOR}" )
set( CPACK_RPM_Library_FILE_NAME "RPM-DEFAULT" )
set( CPACK_RPM_Devel_PACKAGE_REQUIRES "cmake >= ${CMAKE_MINIMUM_REQUIRED_VERSION}, ${CPACK_RPM_Library_PACKAGE_NAME} >= ${CPACK_PACKAGE_VERSION}" )
set( CPACK_RPM_Devel_PACKAGE_SUMMARY ${CPACK_COMPONENT_Devel_DESCRIPTION} )
set( CPACK_RPM_Devel_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )
set( CPACK_RPM_Devel_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-devel" )
set( CPACK_RPM_Devel_FILE_NAME "RPM-DEFAULT" )
IF (CARES_BUILD_TOOLS)
set( CPACK_RPM_Tools_PACKAGE_REQUIRES "${CPACK_RPM_Library_PACKAGE_NAME} >= ${CPACK_PACKAGE_VERSION}" )
set( CPACK_RPM_Tools_PACKAGE_SUMMARY ${CPACK_COMPONENT_Tools_DESCRIPTION} )
set( CPACK_RPM_Tools_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )
set( CPACK_RPM_Tools_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-tools" )
set( CPACK_RPM_Tools_FILE_NAME "RPM-DEFAULT" )
ENDIF ()
# DEB - https://cmake.org/cmake/help/latest/cpack_gen/deb.html
set( CPACK_DEBIAN_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE} )
set( CPACK_DEBIAN_PACKAGE_HOMEPAGE ${CPACK_PACKAGE_HOMEPAGE_URL} )
set( CPACK_DEB_COMPONENT_INSTALL 1 )
set( CPACK_DEBIAN_COMPRESSION_TYPE "xz")
set( CPACK_DEBIAN_PACKAGE_SHLIBDEPS 1 )
if ( ${CPACK_PACKAGE_ARCHITECTURE} STREQUAL "x86_64" )
set( CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64" ) # DEB doesn't always use the kernel's arch name
else()
set( CPACK_DEBIAN_PACKAGE_ARCHITECTURE ${CPACK_PACKAGE_ARCHITECTURE} )
endif()
set( CPACK_DEBIAN_FILE_NAME "DEB-DEFAULT" ) # Use default naming scheme
set( CPACK_DEBIAN_LIBRARY_PACKAGE_NAME ${CPACK_RPM_Library_PACKAGE_NAME} )
set( CPACK_DEBIAN_DEVEL_PACKAGE_DEPENDS "cmake (>= ${CMAKE_MINIMUM_REQUIRED_VERSION}), ${CPACK_DEBIAN_LIBRARY_PACKAGE_NAME} (>= ${CPACK_PACKAGE_VERSION})" )
set( CPACK_DEBIAN_DEVEL_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-dev" )
IF (CARES_BUILD_TOOLS)
set( CPACK_DEBIAN_TOOLS_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-tools" )
set( CPACK_DEBIAN_TOOLS_PACKAGE_SHLIBDEPS OFF ) # dpkg-shlibdeps can't find the libs we built
set( CPACK_DEBIAN_TOOLS_PACKAGE_DEPENDS "${CPACK_DEBIAN_LIBRARY_PACKAGE_NAME} (>= ${CPACK_PACKAGE_VERSION})" )
ENDIF ()
elseif( ${CMAKE_HOST_WIN32} )
set( CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON )
set( CPACK_NSIS_DISPLAY_NAME ${PROJECT_NAME} )
set( CPACK_NSIS_PACKAGE_NAME ${PROJECT_NAME} )
set( CPACK_NSIS_URL_INFO_ABOUT ${CPACK_PACKAGE_HOMEPAGE_URL} )
endif()
# This must always be last!
include( CPack )
ENDIF ()