necouchman commented on a change in pull request #228:
URL: https://github.com/apache/guacamole-server/pull/228#discussion_r490876965
##########
File path: src/protocols/rdp/rdp.c
##########
@@ -227,10 +234,60 @@ static BOOL rdp_freerdp_authenticate(freerdp* instance,
char** username,
rdpContext* context = instance->context;
guac_client* client = ((rdp_freerdp_context*) context)->client;
+ guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
+ guac_rdp_settings* settings = rdp_client->settings;
+ char* params[4] = {};
+ int i = 0;
+
+ /* If the client does not support the "required" instruction, warn and
+ * quit.
+ */
+ if (!guac_client_owner_supports_required(client)) {
+ guac_client_log(client, GUAC_LOG_WARNING, "Client does not support the
"
+ "\"required\" instruction. No authentication parameters will "
+ "be requested.");
+ return TRUE;
+ }
- /* Warn if connection is likely to fail due to lack of credentials */
- guac_client_log(client, GUAC_LOG_INFO,
- "Authentication requested but username or password not given");
+ /* If the username is undefined, add it to the requested parameters. */
+ if (settings->username == NULL) {
+ guac_argv_register(GUAC_RDP_ARGV_USERNAME, guac_rdp_argv_callback,
NULL, 0);
+ params[i] = GUAC_RDP_ARGV_USERNAME;
+ i++;
+ }
+
+ /* If the password is undefined, add it to the requested parameters. */
+ if (settings->password == NULL) {
+ guac_argv_register(GUAC_RDP_ARGV_PASSWORD, guac_rdp_argv_callback,
NULL, 0);
+ params[i] = GUAC_RDP_ARGV_PASSWORD;
+ i++;
+ }
+
+ /* If the domain is undefined, add it to the requested parameters. */
+ if (settings->domain == NULL) {
+ guac_argv_register(GUAC_RDP_ARGV_DOMAIN, guac_rdp_argv_callback, NULL,
0);
+ params[i] = GUAC_RDP_ARGV_DOMAIN;
+ i++;
+ }
+
+ /* NULL-terminate the array. */
+ params[i] = NULL;
+
+ if (i > 0) {
+
+ /* Send required parameters to the owner. */
+ guac_client_owner_send_required(client, (const char**) params);
+
+ guac_argv_await((const char**) params);
+
+ /* Get new values from settings. */
+ *username = settings->username;
+ *password = settings->password;
+ *domain = settings->domain;
Review comment:
Went ahead and moved it to libguac's `string.h` and rename it
`guac_strdup()`.
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