/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ #include "server_setup.h" /* Purpose * * Resolve the given name, using system name resolve functions (NOT any * function provided by libcurl). Used to see if the name exists and thus if * we can allow a test case to use it for testing. * * Like if 'localhost' actual exists etc. * */ #ifdef HAVE_SIGNAL_H #include <signal.h> #endif #ifdef HAVE_NETINET_IN_H #include <netinet/in.h> #endif #ifdef _XOPEN_SOURCE_EXTENDED /* This define is "almost" required to build on HPUX 11 */ #include <arpa/inet.h> #endif #ifdef HAVE_NETDB_H #include <netdb.h> #endif #define ENABLE_CURLX_PRINTF /* make the curlx header define all printf() functions to use the curlx_* versions instead */ #include "curlx.h" /* from the private lib dir */ #include "util.h" /* include memdebug.h last */ #include "memdebug.h" static bool use_ipv6 = FALSE; static const char *ipv_inuse = "IPv4"; const char *serverlogfile=""; /* for a util.c function we don't use */ int main(int argc, char *argv[]) { int arg=1; const char *host = NULL; int rc = 0; while(argc>arg) { if(!strcmp("--version", argv[arg])) { printf("resolve IPv4%s\n", #ifdef ENABLE_IPV6 "/IPv6" #else "" #endif ); return 0; } else if(!strcmp("--ipv6", argv[arg])) { ipv_inuse = "IPv6"; use_ipv6 = TRUE; arg++; } else if(!strcmp("--ipv4", argv[arg])) { /* for completeness, we support this option as well */ ipv_inuse = "IPv4"; use_ipv6 = FALSE; arg++; } else { host = argv[arg++]; } } if(!host) { puts("Usage: resolve [option] <host>\n" " --version\n" " --ipv4" #ifdef ENABLE_IPV6 "\n --ipv6" #endif ); return 1; } #ifdef WIN32 win32_init(); atexit(win32_cleanup); #endif if(!use_ipv6) { /* gethostbyname() resolve */ struct hostent *he; he = gethostbyname(host); rc = !he; } else { #ifdef ENABLE_IPV6 /* Check that the system has IPv6 enabled before checking the resolver */ curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0); if(s == CURL_SOCKET_BAD) /* an IPv6 address was requested and we can't get/use one */ rc = -1; else { sclose(s); } if (rc == 0) { /* getaddrinfo() resolve */ struct addrinfo *ai; struct addrinfo hints; memset(&hints, 0, sizeof(hints)); hints.ai_family = PF_INET6; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_CANONNAME; /* Use parenthesis around functions to stop them from being replaced by the macro in memdebug.h */ rc = (getaddrinfo)(host, "80", &hints, &ai); if (rc == 0) (freeaddrinfo)(ai); } #else puts("IPv6 support has been disabled in this program"); return 1; #endif } if(rc) printf("Resolving %s '%s' didn't work\n", ipv_inuse, host); return !!rc; }