CMakeLua/Utilities/cmcurl-7.19.0/docs/examples/simplessl.c

   1 /*****************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * $Id: simplessl.c,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
   9  */
  10
  11 #include <stdio.h>
  12
  13 #include <curl/curl.h>
  14 #include <curl/types.h>
  15 #include <curl/easy.h>
  16
  17
  18 /* some requirements for this to work:
  19    1.   set pCertFile to the file with the client certificate
  20    2.   if the key is passphrase protected, set pPassphrase to the
  21         passphrase you use
  22    3.   if you are using a crypto engine:
  23    3.1. set a #define USE_ENGINE
  24    3.2. set pEngine to the name of the crypto engine you use
  25    3.3. set pKeyName to the key identifier you want to use
  26    4.   if you don't use a crypto engine:
  27    4.1. set pKeyName to the file name of your client key
  28    4.2. if the format of the key file is DER, set pKeyType to "DER"
  29
  30    !! verify of the server certificate is not implemented here !!
  31
  32    **** This example only works with libcurl 7.9.3 and later! ****
  33
  34 */
  35
  36 int main(int argc, char **argv)
  37 {
  38   CURL *curl;
  39   CURLcode res;
  40   FILE *headerfile;
  41   const char *pPassphrase = NULL;
  42
  43   static const char *pCertFile = "testcert.pem";
  44   static const char *pCACertFile="cacert.pem";
  45
  46   const char *pKeyName;
  47   const char *pKeyType;
  48
  49   const char *pEngine;
  50
  51 #if USE_ENGINE
  52   pKeyName  = "rsa_test";
  53   pKeyType  = "ENG";
  54   pEngine   = "chil";            /* for nChiper HSM... */
  55 #else
  56   pKeyName  = "testkey.pem";
  57   pKeyType  = "PEM";
  58   pEngine   = NULL;
  59 #endif
  60
  61   headerfile = fopen("dumpit", "w");
  62
  63   curl_global_init(CURL_GLOBAL_DEFAULT);
  64
  65   curl = curl_easy_init();
  66   if(curl) {
  67     /* what call to write: */
  68     curl_easy_setopt(curl, CURLOPT_URL, "HTTPS://your.favourite.ssl.site");
  69     curl_easy_setopt(curl, CURLOPT_WRITEHEADER, headerfile);
  70
  71     while(1)                    /* do some ugly short cut... */
  72     {
  73       if (pEngine)             /* use crypto engine */
  74       {
  75         if (curl_easy_setopt(curl, CURLOPT_SSLENGINE,pEngine) != CURLE_OK)
  76         {                     /* load the crypto engine */
  77           fprintf(stderr,"can't set crypto engine\n");
  78           break;
  79         }
  80         if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT,1L) != CURLE_OK)
  81         { /* set the crypto engine as default */
  82           /* only needed for the first time you load
  83              a engine in a curl object... */
  84           fprintf(stderr,"can't set crypto engine as default\n");
  85           break;
  86         }
  87       }
  88       /* cert is stored PEM coded in file... */
  89       /* since PEM is default, we needn't set it for PEM */
  90       curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE,"PEM");
  91
  92       /* set the cert for client authentication */
  93       curl_easy_setopt(curl,CURLOPT_SSLCERT,pCertFile);
  94
  95       /* sorry, for engine we must set the passphrase
  96          (if the key has one...) */
  97       if (pPassphrase)
  98         curl_easy_setopt(curl,CURLOPT_KEYPASSWD,pPassphrase);
  99
 100       /* if we use a key stored in a crypto engine,
 101          we must set the key type to "ENG" */
 102       curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE,pKeyType);
 103
 104       /* set the private key (file or ID in engine) */
 105       curl_easy_setopt(curl,CURLOPT_SSLKEY,pKeyName);
 106
 107       /* set the file with the certs vaildating the server */
 108       curl_easy_setopt(curl,CURLOPT_CAINFO,pCACertFile);
 109
 110       /* disconnect if we can't validate server's cert */
 111       curl_easy_setopt(curl,CURLOPT_SSL_VERIFYPEER,1L);
 112
 113       res = curl_easy_perform(curl);
 114       break;                   /* we are done... */
 115     }
 116     /* always cleanup */
 117     curl_easy_cleanup(curl);
 118   }
 119
 120   curl_global_cleanup();
 121
 122   return 0;
 123 }