text: /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2004, 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.
   *
   * Id
   ***************************************************************************/
  
  #include "setup.h"
  
  #include <string.h>
  #include <stdio.h>
  
  #include <curl/curl.h>
  #include "urldata.h"
  
  #define _MPRINTF_REPLACE /* use the internal *printf() functions */
  #include <curl/mprintf.h>
  
  #ifdef USE_ARES
  #include <ares_version.h>
  #endif
  
  #ifdef USE_LIBIDN
  #include <stringprep.h>
  #endif
  
  #ifdef USE_SSLEAY
  static int getssl_version(char *ptr, size_t left, long *num)
  {
  
  #if (SSLEAY_VERSION_NUMBER >= 0x905000)
    {
      char sub[2];
      unsigned long ssleay_value;
      sub[1]='\0';
      ssleay_value=SSLeay();
      *num = (long)ssleay_value;
      if(ssleay_value < 0x906000) {
        ssleay_value=SSLEAY_VERSION_NUMBER;
        sub[0]='\0';
      }
      else {
        if(ssleay_value&0xff0) {
          sub[0]=(char)((ssleay_value>>4)&0xff) + 'a' -1;
        }
        else
          sub[0]='\0';
      }
  
      return snprintf(ptr, left, " OpenSSL/%lx.%lx.%lx%s",
                      (ssleay_value>>28)&0xf,
                      (ssleay_value>>20)&0xff,
                      (ssleay_value>>12)&0xff,
                      sub);
    }
  
  #else
    *num = SSLEAY_VERSION_NUMBER;
  #if (SSLEAY_VERSION_NUMBER >= 0x900000)
    return snprintf(ptr, left, " OpenSSL/%lx.%lx.%lx",
                    (SSLEAY_VERSION_NUMBER>>28)&0xff,
                    (SSLEAY_VERSION_NUMBER>>20)&0xff,
                    (SSLEAY_VERSION_NUMBER>>12)&0xf);
  #else
    {
      char sub[2];
      sub[1]='\0';
      if(SSLEAY_VERSION_NUMBER&0x0f) {
        sub[0]=(SSLEAY_VERSION_NUMBER&0x0f) + 'a' -1;
      }
      else
        sub[0]='\0';
  
      return snprintf(ptr, left, " SSL/%x.%x.%x%s",
                      (SSLEAY_VERSION_NUMBER>>12)&0xff,
                      (SSLEAY_VERSION_NUMBER>>8)&0xf,
                      (SSLEAY_VERSION_NUMBER>>4)&0xf, sub);
    }
  #endif
  #endif
  }
  
  #endif
  
  char *curl_version(void)
  {
    static char version[200];
    char *ptr=version;
    /* to prevent compier warnings, we only declare len if we have code
       that uses it */
  #if defined(USE_SSLEAY) || defined(HAVE_LIBZ) || defined(USE_ARES) || \
    defined(USE_LIBIDN)
    int len;
  #endif
    size_t left = sizeof(version);
    strcpy(ptr, LIBCURL_NAME "/" LIBCURL_VERSION );
    ptr=strchr(ptr, '\0');
    left -= strlen(ptr);
    (void)left;
  
  #ifdef USE_SSLEAY
    {
      long num;
      len = getssl_version(ptr, left, &num);
      left -= len;
      ptr += len;
    }
  #endif
  
  #ifdef HAVE_LIBZ
    len = snprintf(ptr, left, " zlib/%s", zlibVersion());
    left -= len;
    ptr += len;
  #endif
  #ifdef USE_ARES
    /* this function is only present in c-ares, not in the original ares */
    len = snprintf(ptr, left, " c-ares/%s", ares_version(NULL));
    left -= len;
    ptr += len;
  #endif
  #ifdef USE_LIBIDN
    if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
      len = snprintf(ptr, left, " libidn/%s", stringprep_check_version(NULL));
      left -= len;
      ptr += len;
    }
  #endif
  
    return version;
  }
  
  /* data for curl_version_info */
  
  static const char *protocols[] = {
  #ifndef CURL_DISABLE_FTP
    "ftp",
  #endif
  #ifndef CURL_DISABLE_GOPHER
    "gopher",
  #endif
  #ifndef CURL_DISABLE_TELNET
    "telnet",
  #endif
  #ifndef CURL_DISABLE_DICT
    "dict",
  #endif
  #ifndef CURL_DISABLE_LDAP
    "ldap",
  #endif
  #ifndef CURL_DISABLE_HTTP
    "http",
  #endif
  #ifndef CURL_DISABLE_FILE
    "file",
  #endif
  
  #ifdef USE_SSLEAY
  #ifndef CURL_DISABLE_HTTP
    "https",
  #endif
  #ifndef CURL_DISABLE_FTP
    "ftps",
  #endif
  #endif
    NULL
  };
  
  static curl_version_info_data version_info = {
    CURLVERSION_NOW,
    LIBCURL_VERSION,
    LIBCURL_VERSION_NUM,
    OS, /* as found by configure or set by hand at build-time */
    0 /* features is 0 by default */
  #ifdef ENABLE_IPV6
    | CURL_VERSION_IPV6
  #endif
  #ifdef HAVE_KRB4
    | CURL_VERSION_KERBEROS4
  #endif
  #ifdef USE_SSLEAY
    | CURL_VERSION_SSL
    | CURL_VERSION_NTLM /* since this requires OpenSSL */
  #endif
  #ifdef HAVE_LIBZ
    | CURL_VERSION_LIBZ
  #endif
  #ifdef HAVE_GSSAPI
    | CURL_VERSION_GSSNEGOTIATE
  #endif
  #ifdef CURLDEBUG
    | CURL_VERSION_DEBUG
  #endif
  #ifdef USE_ARES
    | CURL_VERSION_ASYNCHDNS
  #endif
  #ifdef HAVE_SPNEGO
    | CURL_VERSION_SPNEGO
  #endif
  #if defined(ENABLE_64BIT) && (SIZEOF_CURL_OFF_T > 4)
    | CURL_VERSION_LARGEFILE
  #endif
    ,
    NULL, /* ssl_version */
    0,    /* ssl_version_num */
    NULL, /* zlib_version */
    protocols,
    NULL, /* c-ares version */
    0,    /* c-ares version numerical */
    NULL, /* libidn version */
  };
  
  curl_version_info_data *curl_version_info(CURLversion stamp)
  {
  #ifdef USE_SSLEAY
    static char ssl_buffer[80];
    long num;
    getssl_version(ssl_buffer, sizeof(ssl_buffer), &num);
  
    version_info.ssl_version = ssl_buffer;
    version_info.ssl_version_num = num;
    /* SSL stuff is left zero if undefined */
  #endif
  
  #ifdef HAVE_LIBZ
    version_info.libz_version = zlibVersion();
    /* libz left NULL if non-existing */
  #endif
  #ifdef USE_ARES
    {
      int aresnum;
      version_info.ares = ares_version(&aresnum);
      version_info.ares_num = aresnum;
    }
  #endif
  #ifdef USE_LIBIDN
    /* This returns a version string if we use the given version or later,
       otherwise it returns NULL */
    version_info.libidn = stringprep_check_version(LIBIDN_REQUIRED_VERSION);
    if(version_info.libidn)
      version_info.features |= CURL_VERSION_IDN;
  #endif
    (void)stamp; /* avoid compiler warnings, we don't use this */
  
    return &version_info;
  }
  