sasl: Added calls to Curl_auth_is_<mechansism>_supported()

Hooked up the SASL authentication layer to query the new 'is mechanism
supported' functions when deciding what mechanism to use.

For now existing functionality is maintained.

diff --git a/lib/curl_sasl.c b/lib/curl_sasl.c
index 35e9feaacc348fa4e780fd30870d9a894a40d6e8..68a0b9320898f14dd6aead0e85a52fb738d443d9 100644 (file)
--- a/lib/curl_sasl.c
+++ b/lib/curl_sasl.c
@@ -288,7 +288,7 @@ CURLcode Curl_sasl_start(struct SASL *sasl, struct connectdata *conn,
   }
   else if(conn->bits.user_passwd) {
 #if defined(USE_KERBEROS5)
-    if(enabledmechs & SASL_MECH_GSSAPI) {
+    if((enabledmechs & SASL_MECH_GSSAPI) && Curl_auth_is_gssapi_supported()) {
       sasl->mutual_auth = FALSE; /* TODO: Calculate mutual authentication */
       mech = SASL_MECH_STRING_GSSAPI;
       state1 = SASL_GSSAPI;
@@ -308,7 +308,8 @@ CURLcode Curl_sasl_start(struct SASL *sasl, struct connectdata *conn,
     else
 #endif
 #ifndef CURL_DISABLE_CRYPTO_AUTH
-    if(enabledmechs & SASL_MECH_DIGEST_MD5) {
+    if((enabledmechs & SASL_MECH_DIGEST_MD5) &&
+       Curl_auth_is_digest_supported()) {
       mech = SASL_MECH_STRING_DIGEST_MD5;
       state1 = SASL_DIGESTMD5;
       sasl->authused = SASL_MECH_DIGEST_MD5;
@@ -321,7 +322,7 @@ CURLcode Curl_sasl_start(struct SASL *sasl, struct connectdata *conn,
     else
 #endif
 #ifdef USE_NTLM
-    if(enabledmechs & SASL_MECH_NTLM) {
+    if((enabledmechs & SASL_MECH_NTLM) && Curl_auth_is_ntlm_supported()) {
       mech = SASL_MECH_STRING_NTLM;
       state1 = SASL_NTLM;
       state2 = SASL_NTLM_TYPE2MSG;