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Merge pull request #637 from 1ace/fix/ipc-leak

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Fix a few mem leaks in ipc-server
This commit is contained in:
Drew DeVault 2016-05-30 20:10:08 -04:00
commit 7f6b3d1c1f
1 changed files with 39 additions and 30 deletions
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69
sway/ipc-server.c
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@ -138,6 +138,7 @@ int ipc_handle_connection(int fd, uint32_t mask, void *data) {
int flags;
if ((flags=fcntl(client_fd, F_GETFD)) == -1 || fcntl(client_fd, F_SETFD, flags|FD_CLOEXEC) == -1) {
sway_log_errno(L_INFO, "Unable to set CLOEXEC on IPC client socket");
close(client_fd);
return 0;
}
@ -291,6 +292,11 @@ void ipc_client_handle_command(struct ipc_client *client) {
}
char *buf = malloc(client->payload_length + 1);
if (!buf) {
sway_log_errno(L_INFO, "Out of memory");
ipc_client_disconnect(client);
return;
}
if (client->payload_length > 0)
{
ssize_t received = recv(client->fd, buf, client->payload_length, 0);
@ -302,28 +308,27 @@ void ipc_client_handle_command(struct ipc_client *client) {
return;
}
}
buf[client->payload_length] = '\0';
switch (client->current_command) {
case IPC_COMMAND:
{
buf[client->payload_length] = '\0';
struct cmd_results *results = handle_command(buf);
const char *json = cmd_results_to_json(results);
char reply[256];
int length = snprintf(reply, sizeof(reply), "%s", json);
ipc_send_reply(client, reply, (uint32_t) length);
free_cmd_results(results);
break;
goto exit_cleanup;
}
case IPC_SUBSCRIBE:
{
buf[client->payload_length] = '\0';
struct json_object *request = json_tokener_parse(buf);
if (request == NULL) {
ipc_send_reply(client, "{\"success\": false}", 18);
ipc_client_disconnect(client);
free(buf);
return;
sway_log_errno(L_INFO, "Failed to read request");
goto exit_cleanup;
}
// parse requested event types
@ -343,18 +348,18 @@ void ipc_client_handle_command(struct ipc_client *client) {
#endif
} else {
ipc_send_reply(client, "{\"success\": false}", 18);
ipc_client_disconnect(client);
json_object_put(request);
free(buf);
return;
sway_log_errno(L_INFO, "Failed to parse request");
goto exit_cleanup;
}
}
json_object_put(request);
ipc_send_reply(client, "{\"success\": true}", 17);
break;
goto exit_cleanup;
}
case IPC_GET_WORKSPACES:
{
json_object *workspaces = json_object_new_array();
@ -362,8 +367,9 @@ void ipc_client_handle_command(struct ipc_client *client) {
const char *json_string = json_object_to_json_string(workspaces);
ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
json_object_put(workspaces); // free
break;
goto exit_cleanup;
}
case IPC_GET_INPUTS:
{
json_object *inputs = json_object_new_array();
@ -380,8 +386,9 @@ void ipc_client_handle_command(struct ipc_client *client) {
const char *json_string = json_object_to_json_string(inputs);
ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
json_object_put(inputs);
break;
goto exit_cleanup;
}
case IPC_GET_OUTPUTS:
{
json_object *outputs = json_object_new_array();
@ -389,8 +396,9 @@ void ipc_client_handle_command(struct ipc_client *client) {
const char *json_string = json_object_to_json_string(outputs);
ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
json_object_put(outputs); // free
break;
goto exit_cleanup;
}
case IPC_GET_VERSION:
{
#if defined SWAY_GIT_VERSION && defined SWAY_GIT_BRANCH && defined SWAY_VERSION_DATE
@ -418,29 +426,29 @@ void ipc_client_handle_command(struct ipc_client *client) {
ipc_send_reply(client, json_string, (uint32_t)strlen(json_string));
json_object_put(json); // free
free(full_version);
break;
goto exit_cleanup;
}
case IPC_SWAY_GET_PIXELS:
{
char response_header[9];
memset(response_header, 0, sizeof(response_header));
buf[client->payload_length] = '\0';
swayc_t *output = swayc_by_test(&root_container, output_by_name_test, buf);
if (!output) {
sway_log(L_ERROR, "IPC GET_PIXELS request with unknown output name");
ipc_send_reply(client, response_header, sizeof(response_header));
break;
goto exit_cleanup;
}
struct get_pixels_request *req = malloc(sizeof(struct get_pixels_request));
req->client = client;
req->output = output->handle;
list_add(ipc_get_pixel_requests, req);
wlc_output_schedule_render(output->handle);
break;
goto exit_cleanup;
}
case IPC_GET_BAR_CONFIG:
{
buf[client->payload_length] = '\0';
if (!buf[0]) {
// Send list of configured bar IDs
json_object *bars = json_object_new_array();
@ -454,7 +462,6 @@ void ipc_client_handle_command(struct ipc_client *client) {
json_object_put(bars); // free
} else {
// Send particular bar's details
buf[client->payload_length] = '\0';
struct bar_config *bar = NULL;
int i;
for (i = 0; i < config->bars->length; ++i) {
@ -467,23 +474,24 @@ void ipc_client_handle_command(struct ipc_client *client) {
if (!bar) {
const char *error = "{ \"success\": false, \"error\": \"No bar with that ID\" }";
ipc_send_reply(client, error, (uint32_t)strlen(error));
break;
goto exit_cleanup;
}
json_object *json = ipc_json_describe_bar_config(bar);
const char *json_string = json_object_to_json_string(json);
ipc_send_reply(client, json_string, (uint32_t)strlen(json_string));
json_object_put(json); // free
break;
}
}
default:
sway_log(L_INFO, "Unknown IPC command type %i", client->current_command);
ipc_client_disconnect(client);
return;
goto exit_cleanup;
}
client->payload_length = 0;
default:
sway_log(L_INFO, "Unknown IPC command type %i", client->current_command);
goto exit_cleanup;
}
exit_cleanup:
free(buf);
return;
}
bool ipc_send_reply(struct ipc_client *client, const char *payload, uint32_t payload_length) {
@ -498,13 +506,11 @@ bool ipc_send_reply(struct ipc_client *client, const char *payload, uint32_t pay
if (write(client->fd, data, ipc_header_size) == -1) {
sway_log_errno(L_INFO, "Unable to send header to IPC client");
ipc_client_disconnect(client);
return false;
}
if (write(client->fd, payload, payload_length) == -1) {
sway_log_errno(L_INFO, "Unable to send payload to IPC client");
ipc_client_disconnect(client);
return false;
}
@ -653,7 +659,10 @@ void ipc_send_event(const char *json_string, enum ipc_command_type event) {
continue;
}
client->current_command = event;
ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
if (!ipc_send_reply(client, json_string, (uint32_t) strlen(json_string))) {
sway_log_errno(L_INFO, "Unable to send reply to IPC client");
ipc_client_disconnect(client);
}
}
}