* RFC2831 DIGEST-MD5 authentication
* RFC4422 Simple Authentication and Security Layer (SASL)
* RFC4616 PLAIN authentication
+ * RFC4752 The Kerberos V5 ("GSSAPI") SASL Mechanism
* RFC5034 POP3 SASL Authentication Mechanism
* RFC6749 OAuth 2.0 Authorization Framework
* Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
#include <curl/curl.h>
#include "urldata.h"
#include "sendf.h"
-#include "if2ip.h"
#include "hostip.h"
#include "progress.h"
#include "transfer.h"
"AUTH_DIGESTMD5_RESP",
"AUTH_NTLM",
"AUTH_NTLM_TYPE2MSG",
+ "AUTH_GSSAPI",
+ "AUTH_GSSAPI_TOKEN",
+ "AUTH_GSSAPI_NO_DATA",
"AUTH_XOAUTH2",
"AUTH_CANCEL",
"AUTH_FINAL",
if(mech && (pop3c->preftype & POP3_TYPE_SASL)) {
/* Perform SASL based authentication */
result = pop3_perform_auth(conn, mech, initresp, len, state1, state2);
-
- Curl_safefree(initresp);
}
#ifndef CURL_DISABLE_CRYPTO_AUTH
else if((pop3c->authtypes & POP3_TYPE_APOP) &&
}
}
+ Curl_safefree(initresp);
+
return result;
}
}
#endif
+#if defined(USE_KERBEROS5)
+/* For AUTH GSSAPI (without initial response) responses */
+static CURLcode pop3_state_auth_gssapi_resp(struct connectdata *conn,
+ int pop3code,
+ pop3state instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ struct pop3_conn *pop3c = &conn->proto.pop3c;
+ size_t len = 0;
+ char *respmsg = NULL;
+
+ (void)instate; /* no use for this yet */
+
+ if(pop3code != '+') {
+ failf(data, "Access denied: %d", pop3code);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the initial response message */
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd, "pop",
+ pop3c->mutual_auth,
+ NULL, &conn->krb5,
+ &respmsg, &len);
+ if(!result && respmsg) {
+ /* Send the message */
+ result = Curl_pp_sendf(&pop3c->pp, "%s", respmsg);
+
+ if(!result)
+ state(conn, POP3_AUTH_GSSAPI_TOKEN);
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+
+/* For AUTH GSSAPI user token responses */
+static CURLcode pop3_state_auth_gssapi_token_resp(struct connectdata *conn,
+ int pop3code,
+ pop3state instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ struct pop3_conn *pop3c = &conn->proto.pop3c;
+ char *chlgmsg = NULL;
+ char *respmsg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(pop3code != '+') {
+ failf(data, "Access denied: %d", pop3code);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Get the challenge message */
+ pop3_get_message(data->state.buffer, &chlgmsg);
+
+ if(pop3c->mutual_auth)
+ /* Decode the user token challenge and create the optional response
+ message */
+ result = Curl_sasl_create_gssapi_user_message(data, NULL, NULL, NULL,
+ pop3c->mutual_auth,
+ chlgmsg, &conn->krb5,
+ &respmsg, &len);
+ else
+ /* Decode the security challenge and create the response message */
+ result = Curl_sasl_create_gssapi_security_message(data, chlgmsg,
+ &conn->krb5,
+ &respmsg, &len);
+
+ if(result) {
+ if(result == CURLE_BAD_CONTENT_ENCODING) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&pop3c->pp, "%s", "*");
+
+ if(!result)
+ state(conn, POP3_AUTH_CANCEL);
+ }
+ }
+ else {
+ /* Send the response */
+ if(respmsg)
+ result = Curl_pp_sendf(&pop3c->pp, "%s", respmsg);
+ else
+ result = Curl_pp_sendf(&pop3c->pp, "%s", "");
+
+ if(!result)
+ state(conn, (pop3c->mutual_auth ? POP3_AUTH_GSSAPI_NO_DATA :
+ POP3_AUTH_FINAL));
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+
+/* For AUTH GSSAPI no data responses */
+static CURLcode pop3_state_auth_gssapi_no_data_resp(struct connectdata *conn,
+ int pop3code,
+ pop3state instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *chlgmsg = NULL;
+ char *respmsg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(pop3code != '+') {
+ failf(data, "Access denied: %d", pop3code);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Get the challenge message */
+ pop3_get_message(data->state.buffer, &chlgmsg);
+
+ /* Decode the security challenge and create the security message */
+ result = Curl_sasl_create_gssapi_security_message(data, chlgmsg,
+ &conn->krb5,
+ &respmsg, &len);
+ if(result) {
+ if(result == CURLE_BAD_CONTENT_ENCODING) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&conn->proto.pop3c.pp, "%s", "*");
+
+ if(!result)
+ state(conn, POP3_AUTH_CANCEL);
+ }
+ }
+ else {
+ /* Send the response */
+ if(respmsg) {
+ result = Curl_pp_sendf(&conn->proto.pop3c.pp, "%s", respmsg);
+
+ if(!result)
+ state(conn, POP3_AUTH_FINAL);
+ }
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+#endif
+
/* For AUTH XOAUTH2 (without initial response) responses */
static CURLcode pop3_state_auth_xoauth2_resp(struct connectdata *conn,
int pop3code, pop3state instate)
break;
#endif
+#if defined(USE_KERBEROS5)
+ case POP3_AUTH_GSSAPI:
+ result = pop3_state_auth_gssapi_resp(conn, pop3code, pop3c->state);
+ break;
+
+ case POP3_AUTH_GSSAPI_TOKEN:
+ result = pop3_state_auth_gssapi_token_resp(conn, pop3code, pop3c->state);
+ break;
+
+ case POP3_AUTH_GSSAPI_NO_DATA:
+ result = pop3_state_auth_gssapi_no_data_resp(conn, pop3code,
+ pop3c->state);
+ break;
+#endif
+
case POP3_AUTH_XOAUTH2:
result = pop3_state_auth_xoauth2_resp(conn, pop3code, pop3c->state);
break;
/* Set the progress data */
Curl_pgrsSetUploadCounter(data, 0);
Curl_pgrsSetDownloadCounter(data, 0);
- Curl_pgrsSetUploadSize(data, 0);
- Curl_pgrsSetDownloadSize(data, 0);
+ Curl_pgrsSetUploadSize(data, -1);
+ Curl_pgrsSetDownloadSize(data, -1);
/* Carry out the perform */
result = pop3_perform(conn, &connected, dophase_done);
/* Calculate the supported authentication mechanism, by decreasing order of
security, as well as the initial response where appropriate */
+#if defined(USE_KERBEROS5)
+ if((pop3c->authmechs & SASL_MECH_GSSAPI) &&
+ (pop3c->prefmech & SASL_MECH_GSSAPI)) {
+ pop3c->mutual_auth = FALSE; /* TODO: Calculate mutual authentication */
+
+ *mech = SASL_MECH_STRING_GSSAPI;
+ *state1 = POP3_AUTH_GSSAPI;
+ *state2 = POP3_AUTH_GSSAPI_TOKEN;
+ pop3c->authused = SASL_MECH_GSSAPI;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd, "pop",
+ pop3c->mutual_auth,
+ NULL, &conn->krb5,
+ initresp, len);
+ }
+ else
+#endif
#ifndef CURL_DISABLE_CRYPTO_AUTH
if((pop3c->authmechs & SASL_MECH_DIGEST_MD5) &&
(pop3c->prefmech & SASL_MECH_DIGEST_MD5)) {
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