--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/src/tool_main.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,340 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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 https://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 "tool_setup.h"
+
+#include <sys/stat.h>
+
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+
+#ifdef USE_NSS
+#include <nspr.h>
+#include <plarenas.h>
+#endif
+
+#define ENABLE_CURLX_PRINTF
+/* use our own printf() functions */
+#include "curlx.h"
+
+#include "tool_cfgable.h"
+#include "tool_convert.h"
+#include "tool_doswin.h"
+#include "tool_msgs.h"
+#include "tool_operate.h"
+#include "tool_panykey.h"
+#include "tool_vms.h"
+#include "tool_main.h"
+#include "tool_libinfo.h"
+
+/*
+ * This is low-level hard-hacking memory leak tracking and similar. Using
+ * the library level code from this client-side is ugly, but we do this
+ * anyway for convenience.
+ */
+#include "memdebug.h" /* keep this as LAST include */
+
+#ifdef __VMS
+/*
+ * vms_show is a global variable, used in main() as parameter for
+ * function vms_special_exit() to allow proper curl tool exiting.
+ * Its value may be set in other tool_*.c source files thanks to
+ * forward declaration present in tool_vms.h
+ */
+int vms_show = 0;
+#endif
+
+#ifdef __MINGW32__
+/*
+ * There seems to be no way to escape "*" in command-line arguments with MinGW
+ * when command-line argument globbing is enabled under the MSYS shell, so turn
+ * it off.
+ */
+int _CRT_glob = 0;
+#endif /* __MINGW32__ */
+
+/* if we build a static library for unit tests, there is no main() function */
+#ifndef UNITTESTS
+
+/*
+ * Ensure that file descriptors 0, 1 and 2 (stdin, stdout, stderr) are
+ * open before starting to run.  Otherwise, the first three network
+ * sockets opened by curl could be used for input sources, downloaded data
+ * or error logs as they will effectively be stdin, stdout and/or stderr.
+ */
+static void main_checkfds(void)
+{
+#ifdef HAVE_PIPE
+  int fd[2] = { STDIN_FILENO, STDIN_FILENO };
+  while(fd[0] == STDIN_FILENO ||
+        fd[0] == STDOUT_FILENO ||
+        fd[0] == STDERR_FILENO ||
+        fd[1] == STDIN_FILENO ||
+        fd[1] == STDOUT_FILENO ||
+        fd[1] == STDERR_FILENO)
+    if(pipe(fd) < 0)
+      return;   /* Out of handles. This isn't really a big problem now, but
+                   will be when we try to create a socket later. */
+  close(fd[0]);
+  close(fd[1]);
+#endif
+}
+
+#ifdef CURLDEBUG
+static void memory_tracking_init(void)
+{
+  char *env;
+  /* if CURL_MEMDEBUG is set, this starts memory tracking message logging */
+  env = curlx_getenv("CURL_MEMDEBUG");
+  if(env) {
+    /* use the value as file name */
+    char fname[CURL_MT_LOGFNAME_BUFSIZE];
+    if(strlen(env) >= CURL_MT_LOGFNAME_BUFSIZE)
+      env[CURL_MT_LOGFNAME_BUFSIZE-1] = '\0';
+    strcpy(fname, env);
+    curl_free(env);
+    curl_dbg_memdebug(fname);
+    /* this weird stuff here is to make curl_free() get called before
+       curl_gdb_memdebug() as otherwise memory tracking will log a free()
+       without an alloc! */
+  }
+  /* if CURL_MEMLIMIT is set, this enables fail-on-alloc-number-N feature */
+  env = curlx_getenv("CURL_MEMLIMIT");
+  if(env) {
+    char *endptr;
+    long num = strtol(env, &endptr, 10);
+    if((endptr != env) && (endptr == env + strlen(env)) && (num > 0))
+      curl_dbg_memlimit(num);
+    curl_free(env);
+  }
+}
+#else
+#  define memory_tracking_init() Curl_nop_stmt
+#endif
+
+/*
+ * This is the main global constructor for the app. Call this before
+ * _any_ libcurl usage. If this fails, *NO* libcurl functions may be
+ * used, or havoc may be the result.
+ */
+static CURLcode main_init(struct GlobalConfig *config)
+{
+  CURLcode result = CURLE_OK;
+
+#if defined(__DJGPP__) || defined(__GO32__)
+  /* stop stat() wasting time */
+  _djstat_flags |= _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
+#endif
+
+  /* Initialise the global config */
+  config->showerror = -1;             /* Will show errors */
+  config->errors = stderr;            /* Default errors to stderr */
+  config->styled_output = TRUE;       /* enable detection */
+  config->parallel_max = PARALLEL_DEFAULT;
+
+  /* Allocate the initial operate config */
+  config->first = config->last = malloc(sizeof(struct OperationConfig));
+  if(config->first) {
+    /* Perform the libcurl initialization */
+    result = curl_global_init(CURL_GLOBAL_DEFAULT);
+    if(!result) {
+      /* Get information about libcurl */
+      result = get_libcurl_info();
+
+      if(!result) {
+        /* Initialise the config */
+        config_init(config->first);
+        config->first->global = config;
+      }
+      else {
+        helpf(stderr, "error retrieving curl library information\n");
+        free(config->first);
+      }
+    }
+    else {
+      helpf(stderr, "error initializing curl library\n");
+      free(config->first);
+    }
+  }
+  else {
+    helpf(stderr, "error initializing curl\n");
+    result = CURLE_FAILED_INIT;
+  }
+
+  return result;
+}
+
+static void free_globalconfig(struct GlobalConfig *config)
+{
+  Curl_safefree(config->trace_dump);
+
+  if(config->errors_fopened && config->errors)
+    fclose(config->errors);
+  config->errors = NULL;
+
+  if(config->trace_fopened && config->trace_stream)
+    fclose(config->trace_stream);
+  config->trace_stream = NULL;
+
+  Curl_safefree(config->libcurl);
+}
+
+/*
+ * This is the main global destructor for the app. Call this after
+ * _all_ libcurl usage is done.
+ */
+static void main_free(struct GlobalConfig *config)
+{
+  /* Cleanup the easy handle */
+  /* Main cleanup */
+  curl_global_cleanup();
+  convert_cleanup();
+  metalink_cleanup();
+#ifdef USE_NSS
+  if(PR_Initialized()) {
+    /* prevent valgrind from reporting still reachable mem from NSRP arenas */
+    PL_ArenaFinish();
+    /* prevent valgrind from reporting possibly lost memory (fd cache, ...) */
+    PR_Cleanup();
+  }
+#endif
+  free_globalconfig(config);
+
+  /* Free the config structures */
+  config_free(config->last);
+  config->first = NULL;
+  config->last = NULL;
+}
+
+#ifdef WIN32
+/* TerminalSettings for Windows */
+static struct TerminalSettings {
+  HANDLE hStdOut;
+  DWORD dwOutputMode;
+} TerminalSettings;
+
+static void configure_terminal(void)
+{
+  /*
+   * If we're running Windows, enable VT output.
+   * Note: VT mode flag can be set on any version of Windows, but VT
+   * processing only performed on Win10 >= Creators Update)
+   */
+
+  /* Define the VT flags in case we're building with an older SDK */
+#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
+    #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
+#endif
+
+  memset(&TerminalSettings, 0, sizeof(TerminalSettings));
+
+  /* Enable VT output */
+  TerminalSettings.hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
+  if((TerminalSettings.hStdOut != INVALID_HANDLE_VALUE)
+    && (GetConsoleMode(TerminalSettings.hStdOut,
+                       &TerminalSettings.dwOutputMode))) {
+    SetConsoleMode(TerminalSettings.hStdOut,
+                   TerminalSettings.dwOutputMode
+                   | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
+  }
+}
+#else
+#define configure_terminal()
+#endif
+
+static void restore_terminal(void)
+{
+#ifdef WIN32
+  /* Restore Console output mode and codepage to whatever they were
+   * when Curl started */
+  SetConsoleMode(TerminalSettings.hStdOut, TerminalSettings.dwOutputMode);
+#endif
+}
+
+/*
+** curl tool main function.
+*/
+int main(int argc, char *argv[])
+{
+  CURLcode result = CURLE_OK;
+  struct GlobalConfig global;
+  memset(&global, 0, sizeof(global));
+
+  /* Perform any platform-specific terminal configuration */
+  configure_terminal();
+
+  main_checkfds();
+
+#if defined(HAVE_SIGNAL) && defined(SIGPIPE)
+  (void)signal(SIGPIPE, SIG_IGN);
+#endif
+
+  /* Initialize memory tracking */
+  memory_tracking_init();
+
+  /* Initialize the curl library - do not call any libcurl functions before
+     this point */
+  result = main_init(&global);
+
+#ifdef WIN32
+  /* Undocumented diagnostic option to list the full paths of all loaded
+     modules, regardless of whether or not initialization succeeded. */
+  if(argc == 2 && !strcmp(argv[1], "--dump-module-paths")) {
+    struct curl_slist *item, *head = GetLoadedModulePaths();
+    for(item = head; item; item = item->next) {
+      printf("%s\n", item->data);
+    }
+    curl_slist_free_all(head);
+    if(!result)
+      main_free(&global);
+  }
+  else
+#endif /* WIN32 */
+  if(!result) {
+    /* Start our curl operation */
+    result = operate(&global, argc, argv);
+
+#ifdef __SYMBIAN32__
+    if(global.showerror)
+      tool_pressanykey();
+#endif
+
+    /* Perform the main cleanup */
+    main_free(&global);
+  }
+
+  /* Return the terminal to its original state */
+  restore_terminal();
+
+#ifdef __NOVELL_LIBC__
+  if(getenv("_IN_NETWARE_BASH_") == NULL)
+    tool_pressanykey();
+#endif
+
+#ifdef __VMS
+  vms_special_exit(result, vms_show);
+#else
+  return (int)result;
+#endif
+}
+
+#endif /* ndef UNITTESTS */