sasl: Moved login authentication message creation from smtp.c

Moved the login message creation from smtp.c into the sasl module
to allow for use by other modules such as pop3.

3 files changed, 49 insertions, 23 deletions

diff --git a/lib/curl_sasl.c b/lib/curl_sasl.c
index e2e1e3e7a..50baea97a 100644
--- a/lib/curl_sasl.c
+++ b/lib/curl_sasl.c
@@ -77,3 +77,39 @@ CURLcode Curl_sasl_create_plain_message(struct SessionHandle *data,
   return Curl_base64_encode(data, plainauth, 2 * ulen + plen + 2, outptr,
                             outlen);
 }
+
+/*
+ * Curl_sasl_create_login_message()
+ *
+ * This is used to generate an already encoded login message containing the
+ * user name or password ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * userp   [in]     - The user name.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
+                                        const char* valuep, char **outptr,
+                                        size_t *outlen)
+{
+  size_t vlen = strlen(valuep);
+
+  if(!vlen) {
+    *outptr = strdup("=");
+    if(*outptr) {
+      *outlen = (size_t) 1;
+      return CURLE_OK;
+    }
+
+    *outlen = 0;
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
+}
diff --git a/lib/curl_sasl.h b/lib/curl_sasl.h
index 236645657..dfe69ceda 100644
--- a/lib/curl_sasl.h
+++ b/lib/curl_sasl.h
@@ -33,10 +33,16 @@
 #define SASL_AUTH_EXTERNAL      0x0020
 #define SASL_AUTH_NTLM          0x0040
 
-/* This is to generate a base64 encoded plain authentication message */
+/* This is used to generate a base64 encoded plain authentication message */
 CURLcode Curl_sasl_create_plain_message(struct SessionHandle *data,
                                         const char* userp,
                                         const char* passwdp,
                                         char **outptr, size_t *outlen);
 
+/* This is used to generate a base64 encoded login authentication message
+   containing either the user name or password details */
+CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
+                                        const char* valuep, char **outptr,
+                                        size_t *outlen);
+
 #endif /* HEADER_CURL_SASL_H */
diff --git a/lib/smtp.c b/lib/smtp.c
index f202fd6a7..06cf2a5a2 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -383,25 +383,6 @@ static CURLcode smtp_state_helo(struct connectdata *conn)
   return CURLE_OK;
 }
 
-static CURLcode smtp_auth_login(struct connectdata *conn, const char *valuep,
-                                char **outptr, size_t *outlen)
-{
-  size_t vlen = strlen(valuep);
-
-  if(!vlen) {
-    *outptr = strdup("=");
-    if(*outptr) {
-      *outlen = (size_t) 1;
-      return CURLE_OK;
-    }
-
-    *outlen = 0;
-    return CURLE_OUT_OF_MEMORY;
-  }
-
-  return Curl_base64_encode(conn->data, valuep, vlen, outptr, outlen);
-}
-
 #ifdef USE_NTLM
 static CURLcode smtp_auth_ntlm_type1_message(struct connectdata *conn,
                                              char **outptr, size_t *outlen)
@@ -459,7 +440,8 @@ static CURLcode smtp_authenticate(struct connectdata *conn)
     state1 = SMTP_AUTHLOGIN;
     state2 = SMTP_AUTHPASSWD;
     smtpc->authused = SASL_AUTH_LOGIN;
-    result = smtp_auth_login(conn, conn->user, &initresp, &len);
+    result = Curl_sasl_create_login_message(conn->data, conn->user,
+                                            &initresp, &len);
   }
   else if(smtpc->authmechs & SASL_AUTH_PLAIN) {
     mech = "PLAIN";
@@ -685,7 +667,8 @@ static CURLcode smtp_state_authlogin_resp(struct connectdata *conn,
     result = CURLE_LOGIN_DENIED;
   }
   else {
-    result = smtp_auth_login(conn, conn->user, &authuser, &len);
+    result = Curl_sasl_create_login_message(conn->data, conn->user,
+                                            &authuser, &len);
 
     if(!result) {
       if(authuser) {
@@ -718,7 +701,8 @@ static CURLcode smtp_state_authpasswd_resp(struct connectdata *conn,
     result = CURLE_LOGIN_DENIED;
   }
   else {
-    result = smtp_auth_login(conn, conn->passwd, &authpasswd, &len);
+    result = Curl_sasl_create_login_message(conn->data, conn->passwd,
+                                            &authpasswd, &len);
 
     if(!result) {
       if(authpasswd) {