rest: Add uri to update room

Add uri to allow the change of a room's properties, such as 'name',
'gateway' or 'netmask'

Reject update if new name is already being used by any room of the
center where the room is located

src/rest.c

@@ -81,6 +81,7 @@ struct ev_loop *og_loop;
 #define OG_REST_PARAM_CENTER			(1UL << 43)
 #define OG_REST_PARAM_BACKUP			(1UL << 44)
 #define OG_REST_PARAM_ROOM			(1UL << 45)
+#define OG_REST_PARAM_GATEWAY			(1UL << 46)
 
 static LIST_HEAD(client_list);
 static LIST_HEAD(client_wol_list);
@@ -6076,6 +6077,113 @@ static int og_cmd_post_repository_delete(json_t *element,
 	return 0;
 }
 
+static int og_cmd_post_room_update(json_t *element,
+                               struct og_msg_params *params)
+{
+	struct og_room room = {};
+	const char *key, *msglog;
+	struct og_dbi *dbi;
+	dbi_result result;
+	json_t *value;
+	int err = 0;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "name")) {
+			err = og_json_parse_string_copy(value, room.name,
+							sizeof(room.name));
+			params->flags |= OG_REST_PARAM_NAME;
+		} else if (!strcmp(key, "gateway")) {
+			err = og_json_parse_string_copy(value, room.gateway,
+							sizeof(room.gateway));
+			params->flags |= OG_REST_PARAM_GATEWAY;
+		} else if (!strcmp(key, "netmask")) {
+			err = og_json_parse_string_copy(value, room.netmask,
+							sizeof(room.netmask));
+			params->flags |= OG_REST_PARAM_NETMASK;
+		} else if (!strcmp(key, "id")) {
+			err = og_json_parse_uint(value, &room.id);
+			params->flags |= OG_REST_PARAM_ROOM;
+		}
+
+		if (err < 0)
+			return err;
+	}
+
+	if (!og_msg_params_validate(params, OG_REST_PARAM_ROOM |
+					OG_REST_PARAM_NAME |
+					OG_REST_PARAM_NETMASK |
+					OG_REST_PARAM_GATEWAY))
+		return -1;
+
+	dbi = og_dbi_open(&ogconfig.db);
+	if (!dbi) {
+		syslog(LOG_ERR, "cannot open conection database (%s:%d)\n",
+		       __func__, __LINE__);
+		return -1;
+	}
+
+	result = dbi_conn_queryf(dbi->conn,
+			 "SELECT idaula, idcentro FROM aulas WHERE idaula='%u'",
+			 room.id);
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_ERR, "failed to query database (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		og_dbi_close(dbi);
+		return -1;
+	}
+	if (!dbi_result_next_row(result)) {
+		syslog(LOG_ERR, "could not find a room with that id: %u\n",
+		       room.id);
+		dbi_result_free(result);
+		og_dbi_close(dbi);
+		return -1;
+	}
+	room.center = dbi_result_get_uint(result, "idcentro");
+	dbi_result_free(result);
+
+	result = dbi_conn_queryf(dbi->conn,
+				 "SELECT nombreaula FROM aulas "
+				 "WHERE nombreaula='%s' AND idcentro=%d",
+				 room.name, room.center);
+
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_ERR, "failed to query database (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		og_dbi_close(dbi);
+		return -1;
+	}
+
+	if (dbi_result_get_numrows(result) > 0) {
+		syslog(LOG_ERR, "Room with name %s already exists in the "
+				"center with id %d\n",
+		       room.name, room.center);
+		dbi_result_free(result);
+		og_dbi_close(dbi);
+		return -1;
+	}
+	dbi_result_free(result);
+
+	result = dbi_conn_queryf(dbi->conn,
+				 "UPDATE aulas"
+				 " SET nombreaula='%s',"
+				 "  netmask='%s',"
+				 "  router='%s'"
+				 " WHERE idaula='%u';",
+				room.name, room.netmask, room.gateway, room.id);
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_ERR, "failed to update room in database (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		og_dbi_close(dbi);
+		return -1;
+	}
+	dbi_result_free(result);
+
+	return 0;
+}
+
 static int og_cmd_post_room_add(json_t *element,
 				struct og_msg_params *params)
 {
@@ -7000,6 +7108,7 @@ struct {
 	[OG_URI_CENTER_UPDATE]	= { "center/update", },
 	[OG_URI_CENTER_DELETE]	= { "center/delete", },
 	[OG_URI_ROOM_ADD]	= { "room/add", },
+	[OG_URI_ROOM_UPDATE]	= { "room/update", },
 	[OG_URI_ROOM_DELETE]	= { "room/delete", },
 	[OG_URI_ROOM_INFO]	= { "room/info", },
 	[OG_URI_PROC_ADD]	= { "procedure/add", },
@@ -7694,6 +7803,19 @@ int og_client_state_process_payload_rest(struct og_client *cli)
 			goto err_process_rest_payload;
 		}
 		err = og_cmd_post_room_add(root, &params);
+	} else if (!strncmp(cmd, "room/update",
+			    strlen("room/update"))) {
+		if (method != OG_METHOD_POST) {
+			err = og_client_method_not_found(cli);
+			goto err_process_rest_payload;
+		}
+
+		if (!root) {
+			syslog(LOG_ERR, "command task with no payload\n");
+			err = og_client_bad_request(cli);
+			goto err_process_rest_payload;
+		}
+		err = og_cmd_post_room_update(root, &params);
 	} else if (!strncmp(cmd, "room/delete", strlen("room/delete"))) {
 		if (method != OG_METHOD_POST) {
 			err = og_client_method_not_found(cli);

src/rest.h

@@ -129,6 +129,7 @@ enum og_rest_uri {
 	OG_URI_CENTER_UPDATE,
 	OG_URI_CENTER_DELETE,
 	OG_URI_ROOM_ADD,
+	OG_URI_ROOM_UPDATE,
 	OG_URI_ROOM_DELETE,
 	OG_URI_ROOM_INFO,
 	OG_URI_PROC_ADD,