305 lines
8.2 KiB
C
305 lines
8.2 KiB
C
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/***************************************************************************
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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) 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 https://curl.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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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "tool_setup.h"
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#include <sys/stat.h>
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#ifdef WIN32
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#include <tchar.h>
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#endif
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef USE_NSS
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#include <nspr.h>
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#include <plarenas.h>
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#endif
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#define ENABLE_CURLX_PRINTF
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/* use our own printf() functions */
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#include "curlx.h"
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#include "tool_cfgable.h"
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#include "tool_doswin.h"
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#include "tool_msgs.h"
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#include "tool_operate.h"
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#include "tool_vms.h"
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#include "tool_main.h"
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#include "tool_libinfo.h"
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#include "tool_stderr.h"
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/*
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* This is low-level hard-hacking memory leak tracking and similar. Using
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* the library level code from this client-side is ugly, but we do this
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* anyway for convenience.
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*/
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#include "memdebug.h" /* keep this as LAST include */
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#ifdef __VMS
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/*
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* vms_show is a global variable, used in main() as parameter for
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* function vms_special_exit() to allow proper curl tool exiting.
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* Its value may be set in other tool_*.c source files thanks to
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* forward declaration present in tool_vms.h
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*/
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int vms_show = 0;
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#endif
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#ifdef __MINGW32__
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/*
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* There seems to be no way to escape "*" in command-line arguments with MinGW
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* when command-line argument globbing is enabled under the MSYS shell, so turn
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* it off.
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*/
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int _CRT_glob = 0;
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#endif /* __MINGW32__ */
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/* if we build a static library for unit tests, there is no main() function */
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#ifndef UNITTESTS
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#if defined(HAVE_PIPE) && defined(HAVE_FCNTL)
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/*
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* Ensure that file descriptors 0, 1 and 2 (stdin, stdout, stderr) are
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* open before starting to run. Otherwise, the first three network
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* sockets opened by curl could be used for input sources, downloaded data
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* or error logs as they will effectively be stdin, stdout and/or stderr.
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*
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* fcntl's F_GETFD instruction returns -1 if the file descriptor is closed,
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* otherwise it returns "the file descriptor flags (which typically can only
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* be FD_CLOEXEC, which is not set here).
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*/
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static int main_checkfds(void)
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{
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int fd[2];
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while((fcntl(STDIN_FILENO, F_GETFD) == -1) ||
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(fcntl(STDOUT_FILENO, F_GETFD) == -1) ||
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(fcntl(STDERR_FILENO, F_GETFD) == -1))
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if(pipe(fd))
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return 1;
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return 0;
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}
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#else
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#define main_checkfds() 0
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#endif
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#ifdef CURLDEBUG
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static void memory_tracking_init(void)
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{
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char *env;
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/* if CURL_MEMDEBUG is set, this starts memory tracking message logging */
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env = curlx_getenv("CURL_MEMDEBUG");
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if(env) {
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/* use the value as file name */
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char fname[CURL_MT_LOGFNAME_BUFSIZE];
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if(strlen(env) >= CURL_MT_LOGFNAME_BUFSIZE)
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env[CURL_MT_LOGFNAME_BUFSIZE-1] = '\0';
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strcpy(fname, env);
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curl_free(env);
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curl_dbg_memdebug(fname);
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/* this weird stuff here is to make curl_free() get called before
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curl_dbg_memdebug() as otherwise memory tracking will log a free()
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without an alloc! */
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}
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/* if CURL_MEMLIMIT is set, this enables fail-on-alloc-number-N feature */
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env = curlx_getenv("CURL_MEMLIMIT");
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if(env) {
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char *endptr;
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long num = strtol(env, &endptr, 10);
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if((endptr != env) && (endptr == env + strlen(env)) && (num > 0))
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curl_dbg_memlimit(num);
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curl_free(env);
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}
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}
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#else
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# define memory_tracking_init() Curl_nop_stmt
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#endif
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/*
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* This is the main global constructor for the app. Call this before
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* _any_ libcurl usage. If this fails, *NO* libcurl functions may be
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* used, or havoc may be the result.
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*/
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static CURLcode main_init(struct GlobalConfig *config)
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{
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CURLcode result = CURLE_OK;
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#if defined(__DJGPP__) || defined(__GO32__)
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/* stop stat() wasting time */
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_djstat_flags |= _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
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#endif
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/* Initialise the global config */
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config->showerror = FALSE; /* show errors when silent */
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config->styled_output = TRUE; /* enable detection */
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config->parallel_max = PARALLEL_DEFAULT;
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/* Allocate the initial operate config */
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config->first = config->last = malloc(sizeof(struct OperationConfig));
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if(config->first) {
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/* Perform the libcurl initialization */
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result = curl_global_init(CURL_GLOBAL_DEFAULT);
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if(!result) {
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/* Get information about libcurl */
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result = get_libcurl_info();
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if(!result) {
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/* Initialise the config */
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config_init(config->first);
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config->first->global = config;
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}
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else {
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errorf(config, "error retrieving curl library information\n");
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free(config->first);
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}
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}
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else {
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errorf(config, "error initializing curl library\n");
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free(config->first);
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}
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}
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else {
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errorf(config, "error initializing curl\n");
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result = CURLE_FAILED_INIT;
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}
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return result;
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}
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static void free_globalconfig(struct GlobalConfig *config)
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{
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Curl_safefree(config->trace_dump);
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if(config->trace_fopened && config->trace_stream)
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fclose(config->trace_stream);
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config->trace_stream = NULL;
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Curl_safefree(config->libcurl);
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}
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/*
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* This is the main global destructor for the app. Call this after
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* _all_ libcurl usage is done.
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*/
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static void main_free(struct GlobalConfig *config)
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{
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/* Cleanup the easy handle */
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/* Main cleanup */
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curl_global_cleanup();
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#ifdef USE_NSS
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if(PR_Initialized()) {
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/* prevent valgrind from reporting still reachable mem from NSPR arenas */
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PL_ArenaFinish();
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/* prevent valgrind from reporting possibly lost memory (fd cache, ...) */
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PR_Cleanup();
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}
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#endif
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free_globalconfig(config);
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/* Free the config structures */
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config_free(config->last);
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config->first = NULL;
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config->last = NULL;
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}
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/*
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** curl tool main function.
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*/
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#ifdef _UNICODE
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#if defined(__GNUC__)
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/* GCC doesn't know about wmain() */
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#pragma GCC diagnostic ignored "-Wmissing-prototypes"
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#pragma GCC diagnostic ignored "-Wmissing-declarations"
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#endif
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int wmain(int argc, wchar_t *argv[])
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#else
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int main(int argc, char *argv[])
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#endif
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{
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CURLcode result = CURLE_OK;
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struct GlobalConfig global;
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memset(&global, 0, sizeof(global));
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tool_init_stderr();
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#ifdef WIN32
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/* Undocumented diagnostic option to list the full paths of all loaded
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modules. This is purposely pre-init. */
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if(argc == 2 && !_tcscmp(argv[1], _T("--dump-module-paths"))) {
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struct curl_slist *item, *head = GetLoadedModulePaths();
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for(item = head; item; item = item->next)
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printf("%s\n", item->data);
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curl_slist_free_all(head);
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return head ? 0 : 1;
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}
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/* win32_init must be called before other init routines. */
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result = win32_init();
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if(result) {
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fprintf(stderr, "curl: (%d) Windows-specific init failed.\n", result);
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return result;
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}
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#endif
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if(main_checkfds()) {
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fprintf(stderr, "curl: out of file descriptors\n");
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return CURLE_FAILED_INIT;
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}
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#if defined(HAVE_SIGNAL) && defined(SIGPIPE)
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(void)signal(SIGPIPE, SIG_IGN);
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#endif
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/* Initialize memory tracking */
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memory_tracking_init();
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/* Initialize the curl library - do not call any libcurl functions before
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this point */
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result = main_init(&global);
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if(!result) {
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/* Start our curl operation */
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result = operate(&global, argc, argv);
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/* Perform the main cleanup */
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main_free(&global);
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}
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#ifdef WIN32
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/* Flush buffers of all streams opened in write or update mode */
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fflush(NULL);
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#endif
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#ifdef __VMS
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vms_special_exit(result, vms_show);
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#else
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return (int)result;
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#endif
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}
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#endif /* ndef UNITTESTS */
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