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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, 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 "tool_setup.h"

#include "rawstr.h"

#define ENABLE_CURLX_PRINTF
/* use our own printf() functions */
#include "curlx.h"

#include "tool_cfgable.h"
#include "tool_convert.h"
#include "tool_operhlp.h"
#include "tool_version.h"

#include "memdebug.h" /* keep this as LAST include */

/*
* my_useragent: returns allocated string with default user agent
*/
char *my_useragent(void)
{
  return strdup( CURL_NAME "/" CURL_VERSION );
}

/*
* Print list of OpenSSL supported engines
*/
void list_engines(const struct curl_slist *engines)
{
  puts("Build-time engines:");
  if(!engines) {
    puts(" <none>");
    return;
  }
  for(; engines; engines = engines->next)
    printf(" %s\n", engines->data);
}

void clean_getout(struct Configurable *config)
{
  struct getout *next;
  struct getout *node = config->url_list;

  while(node) {
    next = node->next;
    Curl_safefree(node->url);
    Curl_safefree(node->outfile);
    Curl_safefree(node->infile);
    Curl_safefree(node);
    node = next;
  }
  config->url_list = NULL;
}

bool output_expected(const char *url, const char *uploadfile)
{
  if(!uploadfile)
    return TRUE; /* download */
  if(checkprefix("http://", url) || checkprefix("https://", url))
    return TRUE; /* HTTP(S) upload */

  return FALSE; /* non-HTTP upload, probably no output should be expected */
}

bool stdin_upload(const char *uploadfile)
{
  return (curlx_strequal(uploadfile, "-") ||
          curlx_strequal(uploadfile, ".")) ? TRUE : FALSE;
}

/*
* Adds the file name to the URL if it doesn't already have one.
* url will be freed before return if the returned pointer is different
*/
char *add_file_name_to_url(CURL *curl, char *url, const char *filename)
{
  /* If no file name part is given in the URL, we add this file name */
  char *ptr = strstr(url, "://");
  if(ptr)
    ptr += 3;
  else
    ptr = url;
  ptr = strrchr(ptr, '/');
  if(!ptr || !strlen(++ptr)) {
    /* The URL has no file name part, add the local file name. In order
to be able to do so, we have to create a new URL in another
buffer.*/

    /* We only want the part of the local path that is on the right
side of the rightmost slash and backslash. */
    const char *filep = strrchr(filename, '/');
    char *file2 = strrchr(filep?filep:filename, '\\');
    char *encfile;

    if(file2)
      filep = file2 + 1;
    else if(filep)
      filep++;
    else
      filep = filename;

    /* URL encode the file name */
    encfile = curl_easy_escape(curl, filep, 0 /* use strlen */);
    if(encfile) {
      char *urlbuffer = malloc(strlen(url) + strlen(encfile) + 3);
      if(!urlbuffer) {
        curl_free(encfile);
        Curl_safefree(url);
        return NULL;
      }
      if(ptr)
        /* there is a trailing slash on the URL */
        sprintf(urlbuffer, "%s%s", url, encfile);
      else
        /* there is no trailing slash on the URL */
        sprintf(urlbuffer, "%s/%s", url, encfile);

      curl_free(encfile);
      Curl_safefree(url);

      url = urlbuffer; /* use our new URL instead! */
    }
  }
  return url;
}

/* Extracts the name portion of the URL.
* Returns a pointer to a heap-allocated string or NULL if
* no name part, at location indicated by first argument.
*/
CURLcode get_url_file_name(char **filename, const char *url)
{
  const char *pc;

  *filename = NULL;

  /* Find and get the remote file name */
  pc = strstr(url, "://");
  if(pc)
    pc += 3;
  else
    pc = url;
  pc = strrchr(pc, '/');

  if(pc) {
    /* duplicate the string beyond the slash */
    pc++;
    if(*pc) {
      *filename = strdup(pc);
      if(!*filename)
        return CURLE_OUT_OF_MEMORY;
    }
  }

  /* in case we built debug enabled, we allow an environment variable
* named CURL_TESTDIR to prefix the given file name to put it into a
* specific directory
*/
#ifdef DEBUGBUILD
  {
    char *tdir = curlx_getenv("CURL_TESTDIR");
    if(tdir) {
      char buffer[512]; /* suitably large */
      snprintf(buffer, sizeof(buffer), "%s/%s", tdir, *filename);
      Curl_safefree(*filename);
      *filename = strdup(buffer); /* clone the buffer */
      curl_free(tdir);
    }
  }
#endif

  return CURLE_OK;
}

/*
* 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.
*/
CURLcode main_init(void)
{
#if defined(__DJGPP__) || defined(__GO32__)
  /* stop stat() wasting time */
  _djstat_flags |= _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
#endif

  return curl_global_init(CURL_GLOBAL_DEFAULT);
}

/*
* This is the main global destructor for the app. Call this after
* _all_ libcurl usage is done.
*/
void main_free(void)
{
  curl_global_cleanup();
  convert_cleanup();
}

#ifdef CURLDEBUG
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_memdebug(fname);
    /* this weird stuff here is to make curl_free() get called
before curl_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_memlimit(num);
    curl_free(env);
  }
}
#endif

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