apr_status_t proc_connect_ipc()

in modules/fcgid/fcgid_proc_unix.c [508:554]

• 34 lines of code
• 3 McCabe index (conditional complexity)

apr_status_t proc_connect_ipc(fcgid_procnode *procnode, fcgid_ipc *ipc_handle)
{
    fcgid_namedpipe_handle *handle_info;
    struct sockaddr_un unix_addr;
    apr_status_t rv;

    /* Alloc memory for unix domain socket */
    ipc_handle->ipc_handle_info
        = (fcgid_namedpipe_handle *) apr_pcalloc(ipc_handle->request->pool,
                                                 sizeof
                                                 (fcgid_namedpipe_handle));
    handle_info = (fcgid_namedpipe_handle *) ipc_handle->ipc_handle_info;
    handle_info->handle_socket = socket(AF_UNIX, SOCK_STREAM, 0);
    apr_pool_cleanup_register(ipc_handle->request->pool,
                              handle_info, ipc_handle_cleanup,
                              apr_pool_cleanup_null);

    /* Connect to fastcgi server */
    memset(&unix_addr, 0, sizeof(unix_addr));
    unix_addr.sun_family = AF_UNIX;

    /* PM already made this check for truncation */
    AP_DEBUG_ASSERT(sizeof unix_addr.sun_path > strlen(procnode->socket_path));
    apr_cpystrn(unix_addr.sun_path, procnode->socket_path,
                sizeof(unix_addr.sun_path));

    /* I am the only one who connecting the server
       So I don't have to worry about ECONNREFUSED(listen queue overflow) problem,
       and I will never retry on error */
    if (connect(handle_info->handle_socket, (struct sockaddr *) &unix_addr,
                sizeof(unix_addr)) < 0) {
        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, apr_get_os_error(),
                      ipc_handle->request,
                      "mod_fcgid: can't connect unix domain socket: %s",
                      procnode->socket_path);
        return APR_ECONNREFUSED;
    }

    /* Set nonblock option */
    if ((rv = set_socket_nonblock(handle_info->handle_socket)) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, ipc_handle->request,
                      "mod_fcgid: can't make unix domain socket nonblocking");
        return rv;
    }

    return APR_SUCCESS;
}