Cris Bailiff's CAPATH support added

docs/curl.1

@@ -211,7 +211,17 @@ certificate concatenated!
 If this option is used several times, the last one will be used.
 .IP "--cacert <CA certificate>"
 (HTTPS) Tells curl to use the specified certificate file to verify the
-peer. The certificate must be in PEM format.
+peer. The file may contain multiple CA certificates. The certificate(s) must
+be in PEM format.
+
+If this option is used several times, the last one will be used.
+.IP "--capath <CA certificate directory>"
+(HTTPS) Tells curl to use the specified certificate directory to verify the
+peer. The certificates must be in PEM format, and the directory must have been 
+processed using the c_rehash utility supplied with openssl. Certificate directories
+are not supported under Windows (because c_rehash uses symbolink links to
+create them). Using --capath can allow curl to make https connections much
+more efficiently than using --cacert if the --cacert file contains many CA certificates.
 
 If this option is used several times, the last one will be used.
 .IP "-f/--fail"

docs/libcurl/curl_easy_setopt.3

@@ -514,12 +514,20 @@ argument in the progress callback set with \fICURLOPT_PROGRESSFUNCTION\fP.
 .B CURLOPT_SSL_VERIFYPEER
 Pass a long that is set to a non-zero value to make curl verify the peer's
 certificate. The certificate to verify against must be specified with the
-CURLOPT_CAINFO option. (Added in 7.4.2)
+CURLOPT_CAINFO option (Added in 7.4.2) or a certificate directory must be specified
+with the CURLOPT_CAPATH option (Added in 7.9.8).
 .TP
 .B CURLOPT_CAINFO
-Pass a char * to a zero terminated file naming holding the certificate to
-verify the peer with. This only makes sense when used in combination with the
-CURLOPT_SSL_VERIFYPEER option. (Added in 7.4.2)
+Pass a char * to a zero terminated string naming a file holding one or more
+certificates to verify the peer with. This only makes sense when used in
+combination with the CURLOPT_SSL_VERIFYPEER option. (Added in 7.4.2)
+.TP
+.B CURLOPT_CAPATH
+Pass a char * to a zero terminated string naming a directory holding multiple CA
+certificates to verify the peer with. The certificate directory must be prepared using
+the openssl c_rehash utility. This only makes sense when used in combination with the
+CURLOPT_SSL_VERIFYPEER option. The CAPATH function apparently does not work in Windows
+due to some limitation in openssl. (Added in 7.9.8)
 .TP
 .B CURLOPT_PASSWDFUNCTION
 Pass a pointer to a \fIcurl_passwd_callback\fP function that will be called

include/curl/curl.h

@@ -545,6 +545,10 @@ typedef enum {
   /* mark this as start of a cookie session */
   CINIT(COOKIESESSION, LONG, 96),
 
+  /* The CApath directory used to validate the peer certificate
+     this option is used only if SSL_VERIFYPEER is true */
+  CINIT(CAPATH, OBJECTPOINT, 97),
+  
   CURLOPT_LASTENTRY /* the last unusued */
 } CURLoption;
 
@@ -728,8 +732,8 @@ CURLcode curl_global_init(long flags);
 void curl_global_cleanup(void);
 
 /* This is the version number */
-#define LIBCURL_VERSION "7.9.7"
-#define LIBCURL_VERSION_NUM 0x070907
+#define LIBCURL_VERSION "7.9.8-pre1"
+#define LIBCURL_VERSION_NUM 0x070908
 
 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
 struct curl_slist {

lib/url.c

@@ -981,7 +981,13 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
      * Set CA info for SSL connection. Specify file name of the CA certificate
      */
     data->set.ssl.CAfile = va_arg(param, char *);
-    data->set.ssl.CApath = NULL; /*This does not work on windows.*/
+    break;
+  case CURLOPT_CAPATH:
+    /*
+     * Set CA path info  for SSL connection. Specify directory name of the CA certificates
+     * which have been prepared using openssl c_rehash utility.
+     */
+    data->set.ssl.CApath = va_arg(param, char *); /*This does not work on windows.*/
     break;
   case CURLOPT_TELNETOPTIONS:
     /*

src/main.c

@@ -345,6 +345,7 @@ static void help(void)
        "    --pass  <pass>  Specifies your passphrase for the private key (HTTPS)");
   puts("    --engine <eng>  Specifies the crypto engine to use (HTTPS)\n"
        "    --cacert <file> CA certifciate to verify peer against (SSL)\n"
+       "    --capath <directory> CA directory (made using c_rehash) to verify peer against (SSL, NOT Windows)\n"
        "    --ciphers <list> What SSL ciphers to use (SSL)\n"
        "    --connect-timeout <seconds> Maximum time allowed for connection\n"
        " -f/--fail          Fail silently (no output at all) on errors (H)\n"
@@ -454,6 +455,7 @@ struct Configurable {
   char *cert;
   char *cert_type;
   char *cacert;
+  char *capath;
   char *key;
   char *key_type;
   char *key_passwd;
@@ -999,6 +1001,7 @@ static ParameterError getparameter(char *flag, /* f or -long-flag */
     {"Ed","key-type",    TRUE},
     {"Ee","pass",        TRUE},
     {"Ef","engine",      TRUE},
+    {"Eg","capath ",     TRUE},
     {"f", "fail",        FALSE},
     {"F", "form",        TRUE},
     {"g", "globoff",     FALSE},
@@ -1335,6 +1338,10 @@ static ParameterError getparameter(char *flag, /* f or -long-flag */
       case 'f': /* crypto engine */
         GetStr(&config->engine, nextarg);
         break;
+      case 'g': /* CA info PEM file */
+        /* CA cert directory */
+        GetStr(&config->capath, nextarg);
+        break;
       default: /* certificate file */
         {
           char *ptr = strchr(nextarg, ':');
@@ -2082,6 +2089,8 @@ void free_config_fields(struct Configurable *config)
     curl_formfree(config->httppost);
   if(config->cacert)
     free(config->cacert);
+  if(config->capath)
+    free(config->capath);
   if(config->cookiejar)
     free(config->cookiejar);
 
@@ -2558,8 +2567,9 @@ operate(struct Configurable *config, int argc, char *argv[])
       curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, config->key_type);
       curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, config->key_passwd);
 
-      if(config->cacert) {
-        curl_easy_setopt(curl, CURLOPT_CAINFO, config->cacert);
+      if(config->cacert || config->capath) {
+        if (config->cacert) curl_easy_setopt(curl, CURLOPT_CAINFO, config->cacert);
+        if (config->capath) curl_easy_setopt(curl, CURLOPT_CAPATH, config->capath);
         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, TRUE);
         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2);
       }