GUAC-346: Add support for specifying the client hostname.

src/protocols/rdp/client.c

@@ -115,6 +115,7 @@ const char* GUAC_CLIENT_ARGS[] = {
     "remote-app-dir",
     "remote-app-args",
     "static-channels",
+    "client-name",
     NULL
 };
 
@@ -144,6 +145,7 @@ enum RDP_ARGS_IDX {
     IDX_REMOTE_APP_DIR,
     IDX_REMOTE_APP_ARGS,
     IDX_STATIC_CHANNELS,
+    IDX_CLIENT_NAME,
     RDP_ARGS_COUNT
 };
 
@@ -666,6 +668,11 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
     if (argv[IDX_PASSWORD][0] != '\0')
         settings->password = strdup(argv[IDX_PASSWORD]);
 
+    /* Client name */
+    settings->client_name = NULL;
+    if (argv[IDX_CLIENT_NAME][0] != '\0')
+        settings->client_name = strdup(argv[IDX_CLIENT_NAME]);
+
     /* Initial program */
     settings->initial_program = NULL;
     if (argv[IDX_INITIAL_PROGRAM][0] != '\0')

src/protocols/rdp/rdp_settings.c

@@ -33,6 +33,7 @@
 #endif
 
 #include <stddef.h>
+#include <string.h>
 
 int guac_rdp_get_width(freerdp* rdp) {
 #ifdef LEGACY_RDPSETTINGS
@@ -98,6 +99,17 @@ void guac_rdp_push_settings(guac_rdp_settings* guac_settings, freerdp* rdp) {
     rdp_settings->KeyboardLayout = guac_settings->server_layout->freerdp_keyboard_layout;
 #endif
 
+    /* Client name */
+    if (guac_settings->client_name != NULL) {
+#ifdef LEGACY_RDPSETTINGS
+        strncpy(rdp_settings->client_hostname, guac_settings->client_name,
+                RDP_CLIENT_HOSTNAME_SIZE - 1);
+#else
+        strncpy(rdp_settings->ClientHostname, guac_settings->client_name,
+                RDP_CLIENT_HOSTNAME_SIZE - 1);
+#endif
+    }
+
     /* Console */
 #ifdef LEGACY_RDPSETTINGS
     rdp_settings->console_session = guac_settings->console;

src/protocols/rdp/rdp_settings.h

@@ -30,6 +30,12 @@
 
 #include <freerdp/freerdp.h>
 
+/**
+ * The maximum number of bytes in the client hostname claimed during
+ * connection.
+ */
+#define RDP_CLIENT_HOSTNAME_SIZE 32
+
 /**
  * The default RDP port.
  */
@@ -169,6 +175,12 @@ typedef struct guac_rdp_settings {
      */
     char* initial_program;
 
+    /**
+     * The name of the client to submit to the RDP server upon connection, or
+     * NULL if the name is not specified.
+     */
+    char* client_name;
+
     /**
      * The type of security to use for the connection.
      */