mirror of
https://github.com/moparisthebest/curl
synced 2024-12-21 23:58:49 -05:00
84fd4686e2
Added resolve.c to simply resolve a given host name
148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id$
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***************************************************************************/
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#include "setup.h" /* portability help from the lib directory */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <signal.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.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_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef _XOPEN_SOURCE_EXTENDED
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/* This define is "almost" required to build on HPUX 11 */
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#define ENABLE_CURLX_PRINTF
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/* make the curlx header define all printf() functions to use the curlx_*
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versions instead */
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#include "curlx.h" /* from the private lib dir */
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#include "getpart.h"
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#include "util.h"
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/*
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* ourerrno() returns the errno (or equivalent) on this platform to
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* hide platform specific for the function that calls this.
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*/
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int ourerrno(void)
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{
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#ifdef WIN32
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return (int)GetLastError();
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#else
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return errno;
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#endif
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}
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/* someone else must set this properly */
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extern const char *serverlogfile;
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void logmsg(const char *msg, ...)
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{
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va_list ap;
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char buffer[256]; /* possible overflow if you pass in a huge string */
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FILE *logfp;
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struct timeval tv = curlx_tvnow();
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struct tm *now =
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localtime(&tv.tv_sec); /* not multithread safe but we don't care */
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char timebuf[12];
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snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%02ld",
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now->tm_hour, now->tm_min, now->tm_sec,
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tv.tv_usec/10000);
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va_start(ap, msg);
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vsprintf(buffer, msg, ap);
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va_end(ap);
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logfp = fopen(serverlogfile, "a");
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fprintf(logfp?logfp:stderr, /* write to stderr if the logfile doesn't open */
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"%s %s\n", timebuf, buffer);
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if(logfp)
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fclose(logfp);
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}
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#if defined(WIN32) && !defined(__CYGWIN__)
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/* use instead of perror() on generic windows */
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void win32_perror (const char *msg)
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{
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char buf[256];
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DWORD err = WSAGetLastError();
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if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
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LANG_NEUTRAL, buf, sizeof(buf), NULL))
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snprintf(buf, sizeof(buf), "Unknown error %lu (%#lx)", err, err);
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if (msg)
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fprintf(stderr, "%s: ", msg);
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fprintf(stderr, "%s\n", buf);
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}
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#endif
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#if defined(WIN32) && !defined(__CYGWIN__)
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void win32_init(void)
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{
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WORD wVersionRequested;
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WSADATA wsaData;
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int err;
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wVersionRequested = MAKEWORD(2, 0);
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err = WSAStartup(wVersionRequested, &wsaData);
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if (err != 0) {
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perror("Winsock init failed");
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logmsg("Error initialising winsock -- aborting\n");
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exit(1);
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}
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if ( LOBYTE( wsaData.wVersion ) != 2 ||
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HIBYTE( wsaData.wVersion ) != 0 ) {
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WSACleanup();
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perror("Winsock init failed");
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logmsg("No suitable winsock.dll found -- aborting\n");
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exit(1);
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}
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}
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void win32_cleanup(void)
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{
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WSACleanup();
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}
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#endif
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