90 lines
3.6 KiB
C
90 lines
3.6 KiB
C
/* Copyright (c) 2008 Apple Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
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* HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name(s) of the above
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* copyright holders shall not be used in advertising or otherwise to
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* promote the sale, use or other dealings in this Software without
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* prior written authorization.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <launch.h>
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#include <stdio.h>
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#include <errno.h>
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#include "launchd_fd.h"
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int launchd_display_fd(void) {
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launch_data_t sockets_dict, checkin_request, checkin_response;
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launch_data_t listening_fd_array, listening_fd;
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/* Get launchd fd */
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if ((checkin_request = launch_data_new_string(LAUNCH_KEY_CHECKIN)) == NULL) {
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fprintf(stderr,"launch_data_new_string(\"" LAUNCH_KEY_CHECKIN "\") Unable to create string.\n");
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return ERROR_FD;
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}
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if ((checkin_response = launch_msg(checkin_request)) == NULL) {
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fprintf(stderr,"launch_msg(\"" LAUNCH_KEY_CHECKIN "\") IPC failure: %s\n",strerror(errno));
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return ERROR_FD;
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}
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if (LAUNCH_DATA_ERRNO == launch_data_get_type(checkin_response)) {
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// ignore EACCES, which is common if we weren't started by launchd
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if (launch_data_get_errno(checkin_response) != EACCES)
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fprintf(stderr,"launchd check-in failed: %s\n", strerror(launch_data_get_errno(checkin_response)));
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return ERROR_FD;
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}
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sockets_dict = launch_data_dict_lookup(checkin_response, LAUNCH_JOBKEY_SOCKETS);
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if (NULL == sockets_dict) {
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fprintf(stderr,"launchd check-in: no sockets found to answer requests on!\n");
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return ERROR_FD;
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}
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if (launch_data_dict_get_count(sockets_dict) > 1) {
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fprintf(stderr,"launchd check-in: some sockets will be ignored!\n");
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return ERROR_FD;
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}
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listening_fd_array = launch_data_dict_lookup(sockets_dict, BUNDLE_ID_PREFIX":0");
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if (NULL == listening_fd_array) {
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listening_fd_array = launch_data_dict_lookup(sockets_dict, ":0");
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if (NULL == listening_fd_array) {
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fprintf(stderr,"launchd check-in: No known sockets found to answer requests on! \"%s:0\" and \":0\" failed.\n", BUNDLE_ID_PREFIX);
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return ERROR_FD;
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}
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}
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if (launch_data_array_get_count(listening_fd_array)!=1) {
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fprintf(stderr,"launchd check-in: Expected 1 socket from launchd, got %u)\n",
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(unsigned)launch_data_array_get_count(listening_fd_array));
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return ERROR_FD;
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}
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listening_fd=launch_data_array_get_index(listening_fd_array, 0);
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return launch_data_get_fd(listening_fd);
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}
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