-/*
- * Copyright (c) 2004-2010 Apple Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/fcntl.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/uio.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include "daemon.h"
-
-#define forever for(;;)
-
-#define ASL_SOCKET_NAME "AppleSystemLogger"
-#define MY_ID "asl_in"
-
-static int sock = -1;
-
-aslmsg
-asl_in_getmsg(int fd)
-{
- char *out;
- aslmsg msg;
- uint32_t len, n;
- char tmp[16];
- int status;
- uid_t uid;
- gid_t gid;
-
- n = read(fd, tmp, 11);
- if (n < 11)
- {
- if (n == 0)
- {
- asl_client_count_decrement();
-
- close(fd);
- aslevent_removefd(fd);
- return NULL;
- }
-
- if (n < 0)
- {
- asldebug("%s: read error (len=%d): %s\n", MY_ID, n, strerror(errno));
- if (errno != EINTR)
- {
- asl_client_count_decrement();
-
- close(fd);
- aslevent_removefd(fd);
- return NULL;
- }
- }
-
- return NULL;
- }
-
- len = atoi(tmp);
- if (len == 0) return NULL;
-
- out = malloc(len);
- if (out == NULL) return NULL;
-
- n = read(fd, out, len);
- if (n < len)
- {
- if (n <= 0)
- {
- asldebug("%s: read error (body): %s\n", MY_ID, strerror(errno));
- if (errno != EINTR)
- {
- asl_client_count_decrement();
-
- close(fd);
- aslevent_removefd(fd);
- free(out);
- return NULL;
- }
- }
- }
-
- asldebug("asl_in_getmsg: %s\n", (out == NULL) ? "NULL" : out);
-
- uid = -2;
- gid = -2;
-
- status = getpeereid(fd, &uid, &gid);
- msg = (aslmsg)asl_msg_from_string(out);
- if (msg == NULL)
- {
- free(out);
- return NULL;
- }
-
- snprintf(tmp, sizeof(tmp), "%d", uid);
- asl_set(msg, ASL_KEY_UID, tmp);
-
- snprintf(tmp, sizeof(tmp), "%d", gid);
- asl_set(msg, ASL_KEY_GID, tmp);
-
- free(out);
- return msg;
-}
-
-aslmsg
-asl_in_new_connection(int fd)
-{
- int clientfd;
-
- asldebug("%s: accepting connection\n", MY_ID);
- clientfd = accept(fd, NULL, 0);
- if (clientfd < 0)
- {
- asldebug("%s: error connecting socket fd %d: %s\n", MY_ID, fd, strerror(errno));
- return NULL;
- }
-
- if (fcntl(clientfd, F_SETFL, O_NONBLOCK) < 0)
- {
- close(clientfd);
- clientfd = -1;
- asldebug("%s: couldn't set O_NONBLOCK for fd %d: %s\n", MY_ID, clientfd, strerror(errno));
- return NULL;
- }
-
- asl_client_count_increment();
-
- aslevent_addfd(SOURCE_ASL_SOCKET, clientfd, ADDFD_FLAGS_LOCAL, asl_in_getmsg, NULL, NULL);
- return NULL;
-}
-
-int
-asl_in_init(void)
-{
- int rbufsize;
- int len;
- launch_data_t sockets_dict, fd_array, fd_dict;
-
- asldebug("%s: init\n", MY_ID);
- if (sock >= 0) return sock;
- if (global.launch_dict == NULL)
- {
- asldebug("%s: launchd dict is NULL\n", MY_ID);
- return -1;
- }
-
- sockets_dict = launch_data_dict_lookup(global.launch_dict, LAUNCH_JOBKEY_SOCKETS);
- if (sockets_dict == NULL)
- {
- asldebug("%s: launchd lookup of LAUNCH_JOBKEY_SOCKETS failed\n", MY_ID);
- return -1;
- }
-
- fd_array = launch_data_dict_lookup(sockets_dict, ASL_SOCKET_NAME);
- if (fd_array == NULL)
- {
- asldebug("%s: launchd lookup of ASL_SOCKET_NAME failed\n", MY_ID);
- return -1;
- }
-
- len = launch_data_array_get_count(fd_array);
- if (len <= 0)
- {
- asldebug("%s: launchd fd array is empty\n", MY_ID);
- return -1;
- }
-
- if (len > 1)
- {
- asldebug("%s: warning! launchd fd array has %d sockets\n", MY_ID, len);
- }
-
- fd_dict = launch_data_array_get_index(fd_array, 0);
- if (fd_dict == NULL)
- {
- asldebug("%s: launchd file discriptor array element 0 is NULL\n", MY_ID);
- return -1;
- }
-
- sock = launch_data_get_fd(fd_dict);
-
- rbufsize = 128 * 1024;
- len = sizeof(rbufsize);
-
- if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, &rbufsize, len) < 0)
- {
- asldebug("%s: couldn't set receive buffer size for %d (%s): %s\n", MY_ID, sock, _PATH_ASL_IN, strerror(errno));
- close(sock);
- sock = -1;
- return -1;
- }
-
- if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0)
- {
- asldebug("%s: couldn't set O_NONBLOCK for socket %d (%s): %s\n", MY_ID, sock, _PATH_ASL_IN, strerror(errno));
- close(sock);
- sock = -1;
- return -1;
- }
-
- return aslevent_addfd(SOURCE_ASL_SOCKET, sock, ADDFD_FLAGS_LOCAL, asl_in_new_connection, NULL, NULL);
-}
-
-int
-asl_in_close(void)
-{
- if (sock < 0) return 1;
-
- aslevent_removefd(sock);
- close(sock);
- sock = -1;
-
- return 0;
-}
-
-int
-asl_in_reset(void)
-{
- return 0;
-}
projects / apple / syslog.git / commitdiff
