mirror of
https://github.com/moparisthebest/curl
synced 2024-12-21 07:38:49 -05:00
Added an inet_ntop function from BIND for systems that do not have it
This commit is contained in:
Dominick Meglio
parent
95fe8372e8
commit
7dded571de
@ -1,5 +1,9 @@
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Changelog for the c-ares project
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* May 14
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- Added an inet_ntop function from BIND for systems that do not have it.
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* April 9
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- Made sortlist support IPv6 (this can probably use some testing).
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@ -1,17 +1,17 @@
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CSOURCES = ares_fds.c ares_process.c ares_free_hostent.c ares_query.c \
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ares__close_sockets.c ares_free_string.c ares_search.c ares__get_hostent.c \
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ares_gethostbyaddr.c ares_send.c ares__read_line.c ares_gethostbyname.c \
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ares_strerror.c ares_cancel.c ares_init.c ares_timeout.c ares_destroy.c \
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ares_mkquery.c ares_version.c ares_expand_name.c ares_parse_a_reply.c \
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windows_port.c ares_expand_string.c ares_parse_ptr_reply.c \
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ares_parse_aaaa_reply.c inet_net_pton.c bitncmp.c
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HHEADERS = ares.h ares_private.h setup.h ares_dns.h ares_version.h nameser.h \
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inet_net_pton.h ares_ipv6.h bitncmp.h
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MANPAGES= ares_destroy.3 ares_expand_name.3 ares_expand_string.3 ares_fds.3 \
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ares_free_hostent.3 ares_free_string.3 ares_gethostbyaddr.3 \
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ares_gethostbyname.3 ares_init.3 ares_init_options.3 ares_mkquery.3 \
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ares_parse_a_reply.3 ares_parse_ptr_reply.3 ares_process.3 \
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ares_query.3 ares_search.3 ares_send.3 ares_strerror.3 ares_timeout.3 \
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ares_version.3 ares_cancel.3 ares_parse_aaaa_reply.3
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CSOURCES = ares_fds.c ares_process.c ares_free_hostent.c ares_query.c \
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ares__close_sockets.c ares_free_string.c ares_search.c ares__get_hostent.c \
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ares_gethostbyaddr.c ares_send.c ares__read_line.c ares_gethostbyname.c \
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ares_strerror.c ares_cancel.c ares_init.c ares_timeout.c ares_destroy.c \
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ares_mkquery.c ares_version.c ares_expand_name.c ares_parse_a_reply.c \
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windows_port.c ares_expand_string.c ares_parse_ptr_reply.c \
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ares_parse_aaaa_reply.c inet_net_pton.c bitncmp.c inet_ntop.c
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HHEADERS = ares.h ares_private.h setup.h ares_dns.h ares_version.h nameser.h \
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inet_net_pton.h ares_ipv6.h bitncmp.h
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MANPAGES= ares_destroy.3 ares_expand_name.3 ares_expand_string.3 ares_fds.3 \
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ares_free_hostent.3 ares_free_string.3 ares_gethostbyaddr.3 \
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ares_gethostbyname.3 ares_init.3 ares_init_options.3 ares_mkquery.3 \
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ares_parse_a_reply.3 ares_parse_ptr_reply.3 ares_process.3 \
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ares_query.3 ares_search.3 ares_send.3 ares_strerror.3 ares_timeout.3 \
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ares_version.3 ares_cancel.3 ares_parse_aaaa_reply.3
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@ -1,238 +1,274 @@
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dnl Process this file with autoconf to produce a configure script.
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AC_INIT(ares_init.c)
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AM_CONFIG_HEADER(config.h)
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AM_MAINTAINER_MODE
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AM_INIT_AUTOMAKE(c-ares, CVS)
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AC_PROG_CC
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AC_PROG_INSTALL
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case $host_os in
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solaris*)
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AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
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;;
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esac
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# check for ssize_t
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AC_CHECK_TYPE(ssize_t, ,
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AC_DEFINE(ssize_t, int, [the signed version of size_t]))
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AC_SEARCH_LIBS(gethostbyname, nsl)
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AC_SEARCH_LIBS(socket, socket)
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dnl ************************************************************
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dnl Option to switch on debug options. This makes an assumption that
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dnl this is built as an 'ares' subdir in the curl source tree. Subject for
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dnl improval in the future!
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dnl
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AC_MSG_CHECKING([whether to enable debug options])
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AC_ARG_ENABLE(debug,
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AC_HELP_STRING([--enable-debug],[Enable pedantic debug options])
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AC_HELP_STRING([--disable-debug],[Disable debug options]),
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[ case "$enableval" in
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no)
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AC_MSG_RESULT(no)
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;;
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*) AC_MSG_RESULT(yes)
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dnl when doing the debug stuff, use static library only
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AC_DISABLE_SHARED
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dnl Checks for standard header files, to make memdebug.h inclusions bettter
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AC_HEADER_STDC
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dnl the entire --enable-debug is a hack that lives and runs on top of
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dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier
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AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
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CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include"
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CFLAGS="$CFLAGS -g"
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dnl set compiler "debug" options to become more picky, and remove
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dnl optimize options from CFLAGS
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CURL_CC_DEBUG_OPTS
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;;
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esac ],
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AC_MSG_RESULT(no)
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)
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AC_PROG_LIBTOOL
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dnl check for a few basic system headers we need
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AC_CHECK_HEADERS(
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sys/types.h \
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sys/time.h \
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sys/select.h \
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sys/socket.h \
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winsock.h \
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netinet/in.h \
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arpa/nameser.h \
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arpa/nameser_compat.h \
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arpa/inet.h, , ,
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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dnl We do this default-include simply to make sure that the nameser_compat.h
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dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
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dnl (and others?) is not designed to allow this.
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#ifdef HAVE_ARPA_NAMESER_H
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#include <arpa/nameser.h>
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#endif
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]
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)
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dnl check for AF_INET6
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CARES_CHECK_CONSTANT(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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], [PF_INET6],
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AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
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)
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dnl check for PF_INET6
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CARES_CHECK_CONSTANT(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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], [AF_INET6],
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AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
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)
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dnl check for the in6_addr structure
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CARES_CHECK_STRUCT(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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], [in6_addr],
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AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
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)
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dnl check for inet_pton
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AC_CHECK_FUNCS(inet_pton)
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dnl Some systems have it, but not IPv6
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if test "$ac_cv_func_inet_pton" = "yes" ; then
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AC_MSG_CHECKING(if inet_pton supports IPv6)
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AC_TRY_RUN(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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int main()
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{
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struct in6_addr addr6;
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if (inet_pton(AF_INET6, "::1", &addr6) < 1)
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exit(1);
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else
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exit(0);
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}
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], [
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AC_MSG_RESULT(yes)
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AC_DEFINE_UNQUOTED(HAVE_INET_PTON_IPV6,1,[Define to 1 if inet_pton supports IPv6.])
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], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
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fi
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dnl Check for inet_net_pton
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AC_CHECK_FUNCS(inet_net_pton)
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dnl Again, some systems have it, but not IPv6
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if test "$ac_cv_func_inet_net_pton" = "yes" ; then
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AC_MSG_CHECKING(if inet_net_pton supports IPv6)
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AC_TRY_RUN(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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int main()
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{
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struct in6_addr addr6;
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if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
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exit(1);
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else
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exit(0);
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}
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], [
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AC_MSG_RESULT(yes)
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AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
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], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
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fi
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AC_CHECK_SIZEOF(struct in6_addr, ,
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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]
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)
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AC_CHECK_SIZEOF(struct in_addr, ,
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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]
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)
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AC_CHECK_FUNCS(bitncmp)
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AC_OUTPUT(Makefile)
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dnl Process this file with autoconf to produce a configure script.
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AC_INIT(ares_init.c)
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AM_CONFIG_HEADER(config.h)
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AM_MAINTAINER_MODE
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AM_INIT_AUTOMAKE(c-ares, CVS)
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|
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AC_PROG_CC
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AC_PROG_INSTALL
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case $host_os in
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solaris*)
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AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
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;;
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esac
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# check for ssize_t
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AC_CHECK_TYPE(ssize_t, ,
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AC_DEFINE(ssize_t, int, [the signed version of size_t]))
|
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|
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AC_SEARCH_LIBS(gethostbyname, nsl)
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AC_SEARCH_LIBS(socket, socket)
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|
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dnl ************************************************************
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dnl Option to switch on debug options. This makes an assumption that
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dnl this is built as an 'ares' subdir in the curl source tree. Subject for
|
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dnl improval in the future!
|
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dnl
|
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AC_MSG_CHECKING([whether to enable debug options])
|
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AC_ARG_ENABLE(debug,
|
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AC_HELP_STRING([--enable-debug],[Enable pedantic debug options])
|
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AC_HELP_STRING([--disable-debug],[Disable debug options]),
|
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[ case "$enableval" in
|
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no)
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AC_MSG_RESULT(no)
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;;
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*) AC_MSG_RESULT(yes)
|
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dnl when doing the debug stuff, use static library only
|
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AC_DISABLE_SHARED
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|
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dnl Checks for standard header files, to make memdebug.h inclusions bettter
|
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AC_HEADER_STDC
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|
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dnl the entire --enable-debug is a hack that lives and runs on top of
|
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dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier
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AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
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CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include"
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CFLAGS="$CFLAGS -g"
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dnl set compiler "debug" options to become more picky, and remove
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dnl optimize options from CFLAGS
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CURL_CC_DEBUG_OPTS
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;;
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esac ],
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AC_MSG_RESULT(no)
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)
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AC_PROG_LIBTOOL
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dnl check for a few basic system headers we need
|
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AC_CHECK_HEADERS(
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sys/types.h \
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sys/time.h \
|
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sys/select.h \
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sys/socket.h \
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winsock.h \
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netinet/in.h \
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arpa/nameser.h \
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arpa/nameser_compat.h \
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arpa/inet.h, , ,
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[
|
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
|
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#endif
|
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dnl We do this default-include simply to make sure that the nameser_compat.h
|
||||
dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
|
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dnl (and others?) is not designed to allow this.
|
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#ifdef HAVE_ARPA_NAMESER_H
|
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#include <arpa/nameser.h>
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#endif
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]
|
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)
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dnl check for AF_INET6
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CARES_CHECK_CONSTANT(
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[
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
|
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
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#endif
|
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|
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], [PF_INET6],
|
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AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
|
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)
|
||||
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dnl check for PF_INET6
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CARES_CHECK_CONSTANT(
|
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[
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#ifdef HAVE_SYS_TYPES_H
|
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#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
|
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#endif
|
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#ifdef HAVE_WINSOCK_H
|
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#include <winsock.h>
|
||||
#endif
|
||||
|
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], [AF_INET6],
|
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AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
|
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)
|
||||
|
||||
|
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dnl check for the in6_addr structure
|
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CARES_CHECK_STRUCT(
|
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[
|
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#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
|
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#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
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], [in6_addr],
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AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
|
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)
|
||||
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dnl check for inet_pton
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AC_CHECK_FUNCS(inet_pton)
|
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dnl Some systems have it, but not IPv6
|
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if test "$ac_cv_func_inet_pton" = "yes" ; then
|
||||
AC_MSG_CHECKING(if inet_pton supports IPv6)
|
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AC_TRY_RUN(
|
||||
[
|
||||
#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
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#ifdef HAVE_SYS_SOCKET_H
|
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#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
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#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
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#include <netinet/in.h>
|
||||
#endif
|
||||
int main()
|
||||
{
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struct in6_addr addr6;
|
||||
if (inet_pton(AF_INET6, "::1", &addr6) < 1)
|
||||
exit(1);
|
||||
else
|
||||
exit(0);
|
||||
}
|
||||
], [
|
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AC_MSG_RESULT(yes)
|
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AC_DEFINE_UNQUOTED(HAVE_INET_PTON_IPV6,1,[Define to 1 if inet_pton supports IPv6.])
|
||||
], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
|
||||
fi
|
||||
dnl Check for inet_net_pton
|
||||
AC_CHECK_FUNCS(inet_net_pton)
|
||||
dnl Again, some systems have it, but not IPv6
|
||||
if test "$ac_cv_func_inet_net_pton" = "yes" ; then
|
||||
AC_MSG_CHECKING(if inet_net_pton supports IPv6)
|
||||
AC_TRY_RUN(
|
||||
[
|
||||
#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_SOCKET_H
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
|
||||
#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
|
||||
int main()
|
||||
{
|
||||
struct in6_addr addr6;
|
||||
if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
|
||||
exit(1);
|
||||
else
|
||||
exit(0);
|
||||
}
|
||||
], [
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
|
||||
], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
|
||||
fi
|
||||
|
||||
|
||||
dnl Check for inet_ntop
|
||||
AC_CHECK_FUNCS(inet_ntop)
|
||||
dnl Again, some systems have it, but not IPv6
|
||||
if test "$ac_cv_func_inet_ntop" = "yes" ; then
|
||||
AC_MSG_CHECKING(if inet_ntop supports IPv6)
|
||||
AC_TRY_RUN(
|
||||
[
|
||||
#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_SOCKET_H
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
|
||||
#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
|
||||
#include <errno.h>
|
||||
int main()
|
||||
{
|
||||
struct in6_addr addr6;
|
||||
char buf[128];
|
||||
if (inet_ntop(AF_INET6, &addr6, buf, 128) == 0 && errno == EAFNOSUPPORT)
|
||||
exit(1);
|
||||
else
|
||||
exit(0);
|
||||
}
|
||||
], [
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE_UNQUOTED(HAVE_INET_NTOP_IPV6,1,[Define to 1 if inet_ntop supports IPv6.])
|
||||
], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
|
||||
fi
|
||||
|
||||
AC_CHECK_SIZEOF(struct in6_addr, ,
|
||||
[
|
||||
#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_SOCKET_H
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
|
||||
#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
|
||||
]
|
||||
)
|
||||
AC_CHECK_SIZEOF(struct in_addr, ,
|
||||
[
|
||||
#ifdef HAVE_SYS_TYPES_H
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_SOCKET_H
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_WINSOCK_H
|
||||
#include <winsock.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
|
||||
]
|
||||
)
|
||||
|
||||
AC_CHECK_FUNCS(bitncmp)
|
||||
|
||||
|
||||
AC_OUTPUT(Makefile)
|
||||
|
||||
210
ares/inet_ntop.c
Normal file
210
ares/inet_ntop.c
Normal file
@ -0,0 +1,210 @@
|
||||
/* Copyright (c) 1996 by Internet Software Consortium.
|
||||
*
|
||||
* Permission to use, copy, modify, and distribute this software for any
|
||||
* purpose with or without fee is hereby granted, provided that the above
|
||||
* copyright notice and this permission notice appear in all copies.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
||||
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
||||
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
||||
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
||||
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
||||
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "setup.h"
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#if defined(WIN32) && !defined(WATT32)
|
||||
#include "nameser.h"
|
||||
#else
|
||||
#ifdef HAVE_SYS_SOCKET_H
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
#ifdef HAVE_NETINET_IN_H
|
||||
#include <netinet/in.h>
|
||||
#endif
|
||||
#ifdef HAVE_ARPA_NAMESER_H
|
||||
#include <arpa/nameser.h>
|
||||
#endif
|
||||
#ifdef HAVE_ARPA_INET_H
|
||||
#include <arpa/inet.h>
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "ares_ipv6.h"
|
||||
#include "inet_ntop.h"
|
||||
|
||||
|
||||
#if !defined(HAVE_INET_NTOP) || !defined(HAVE_INET_NTOP_IPV6)
|
||||
|
||||
#ifdef SPRINTF_CHAR
|
||||
# define SPRINTF(x) strlen(sprintf/**/x)
|
||||
#else
|
||||
# define SPRINTF(x) ((size_t)sprintf x)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* WARNING: Don't even consider trying to compile this on a system where
|
||||
* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
|
||||
*/
|
||||
|
||||
static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size);
|
||||
static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size);
|
||||
|
||||
/* char *
|
||||
* inet_ntop(af, src, dst, size)
|
||||
* convert a network format address to presentation format.
|
||||
* return:
|
||||
* pointer to presentation format address (`dst'), or NULL (see errno).
|
||||
* author:
|
||||
* Paul Vixie, 1996.
|
||||
*/
|
||||
const char *
|
||||
inet_ntop(int af, const void *src, char *dst, size_t size)
|
||||
{
|
||||
|
||||
switch (af) {
|
||||
case AF_INET:
|
||||
return (inet_ntop4(src, dst, size));
|
||||
#ifdef INET6
|
||||
case AF_INET6:
|
||||
return (inet_ntop6(src, dst, size));
|
||||
#endif
|
||||
default:
|
||||
errno = EAFNOSUPPORT;
|
||||
return (NULL);
|
||||
}
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
/* const char *
|
||||
* inet_ntop4(src, dst, size)
|
||||
* format an IPv4 address, more or less like inet_ntoa()
|
||||
* return:
|
||||
* `dst' (as a const)
|
||||
* notes:
|
||||
* (1) uses no statics
|
||||
* (2) takes a unsigned char* not an in_addr as input
|
||||
* author:
|
||||
* Paul Vixie, 1996.
|
||||
*/
|
||||
static const char *
|
||||
inet_ntop4(const unsigned char *src, char *dst, size_t size)
|
||||
{
|
||||
static const char fmt[] = "%u.%u.%u.%u";
|
||||
char tmp[sizeof "255.255.255.255"];
|
||||
|
||||
if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) {
|
||||
errno = ENOSPC;
|
||||
return (NULL);
|
||||
}
|
||||
strcpy(dst, tmp);
|
||||
return (dst);
|
||||
}
|
||||
|
||||
#ifdef INET6
|
||||
/* const char *
|
||||
* inet_ntop6(src, dst, size)
|
||||
* convert IPv6 binary address into presentation (printable) format
|
||||
* author:
|
||||
* Paul Vixie, 1996.
|
||||
*/
|
||||
static const char *
|
||||
inet_ntop6(const unsigned char *src, char *dst, size_t size)
|
||||
{
|
||||
/*
|
||||
* Note that int32_t and int16_t need only be "at least" large enough
|
||||
* to contain a value of the specified size. On some systems, like
|
||||
* Crays, there is no such thing as an integer variable with 16 bits.
|
||||
* Keep this in mind if you think this function should have been coded
|
||||
* to use pointer overlays. All the world's not a VAX.
|
||||
*/
|
||||
char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
|
||||
struct { int base, len; } best, cur;
|
||||
unsigned int words[IN6ADDRSZ / INT16SZ];
|
||||
int i;
|
||||
|
||||
/*
|
||||
* Preprocess:
|
||||
* Copy the input (bytewise) array into a wordwise array.
|
||||
* Find the longest run of 0x00's in src[] for :: shorthanding.
|
||||
*/
|
||||
memset(words, '\0', sizeof words);
|
||||
for (i = 0; i < IN6ADDRSZ; i++)
|
||||
words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
|
||||
best.base = -1;
|
||||
cur.base = -1;
|
||||
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
|
||||
if (words[i] == 0) {
|
||||
if (cur.base == -1)
|
||||
cur.base = i, cur.len = 1;
|
||||
else
|
||||
cur.len++;
|
||||
} else {
|
||||
if (cur.base != -1) {
|
||||
if (best.base == -1 || cur.len > best.len)
|
||||
best = cur;
|
||||
cur.base = -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (cur.base != -1) {
|
||||
if (best.base == -1 || cur.len > best.len)
|
||||
best = cur;
|
||||
}
|
||||
if (best.base != -1 && best.len < 2)
|
||||
best.base = -1;
|
||||
|
||||
/*
|
||||
* Format the result.
|
||||
*/
|
||||
tp = tmp;
|
||||
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
|
||||
/* Are we inside the best run of 0x00's? */
|
||||
if (best.base != -1 && i >= best.base &&
|
||||
i < (best.base + best.len)) {
|
||||
if (i == best.base)
|
||||
*tp++ = ':';
|
||||
continue;
|
||||
}
|
||||
/* Are we following an initial run of 0x00s or any real hex? */
|
||||
if (i != 0)
|
||||
*tp++ = ':';
|
||||
/* Is this address an encapsulated IPv4? */
|
||||
if (i == 6 && best.base == 0 &&
|
||||
(best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
|
||||
if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp)))
|
||||
return (NULL);
|
||||
tp += strlen(tp);
|
||||
break;
|
||||
}
|
||||
tp += SPRINTF((tp, "%x", words[i]));
|
||||
}
|
||||
/* Was it a trailing run of 0x00's? */
|
||||
if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
|
||||
*tp++ = ':';
|
||||
*tp++ = '\0';
|
||||
|
||||
/*
|
||||
* Check for overflow, copy, and we're done.
|
||||
*/
|
||||
if ((size_t)(tp - tmp) > size) {
|
||||
errno = ENOSPC;
|
||||
return (NULL);
|
||||
}
|
||||
strcpy(dst, tmp);
|
||||
return (dst);
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
26
ares/inet_ntop.h
Normal file
26
ares/inet_ntop.h
Normal file
@ -0,0 +1,26 @@
|
||||
/* $Id$ */
|
||||
|
||||
/*
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software and its documentation for any purpose and without
|
||||
* fee is hereby granted, provided that the above copyright
|
||||
* notice appear in all copies and that both that copyright
|
||||
* notice and this permission notice appear in supporting
|
||||
* documentation, and that the name of M.I.T. not be used in
|
||||
* advertising or publicity pertaining to distribution of the
|
||||
* software without specific, written prior permission.
|
||||
* M.I.T. makes no representations about the suitability of
|
||||
* this software for any purpose. It is provided "as is"
|
||||
* without express or implied warranty.
|
||||
*/
|
||||
|
||||
#ifndef INET_NTOP_H
|
||||
#define INET_NTOP_H
|
||||
|
||||
#ifdef HAVE_INET_NTOP
|
||||
#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z)
|
||||
#else
|
||||
const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size);
|
||||
#endif
|
||||
|
||||
#endif /* INET_NET_NTOP_H */
|
||||
Loading…
Reference in New Issue
Block a user