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--- Libc/Libc-763.13/gen/syslog.c
+++ Libc/Libc-498/gen/syslog.c
@@ -1,8 +1,8 @@
/*
- * Copyright (c) 1999-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 1999 Apple Computer, 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
@@ -20,7 +20,6 @@
*
* @APPLE_LICENSE_HEADER_END@
*/
-
/*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
@@ -54,13 +53,26 @@
* SUCH DAMAGE.
*/
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
#include <sys/syslog.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <netdb.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <stdint.h>
#include <string.h>
-#include <stdint.h>
-#include <pthread.h>
+#include <time.h>
+#include <unistd.h>
+#include <notify.h>
#include <asl.h>
-#include "asl_private.h"
+#include <asl_private.h>
#ifdef __STDC__
#include <stdarg.h>
@@ -68,24 +80,41 @@
#include <varargs.h>
#endif
+#include <crt_externs.h>
+
#define LOG_NO_NOTIFY 0x1000
-extern const char *asl_syslog_faciliy_num_to_name(int n);
+#define INTERNALLOG LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
#ifdef BUILDING_VARIANT
-__private_extern__ pthread_mutex_t _sl_lock;
-__private_extern__ aslclient _sl_asl;
-__private_extern__ char *_sl_ident;
-__private_extern__ int _sl_fac;
-__private_extern__ int _sl_opts;
-__private_extern__ int _sl_mask;
+__private_extern__ int _sl_LogFile; /* fd for log */
+__private_extern__ int _sl_connected; /* have done connect */
+__private_extern__ int _sl_LogStat; /* status bits, set by openlog() */
+__private_extern__ const char *_sl_LogTag; /* string to tag the entry with */
+__private_extern__ int _sl_LogFacility; /* default facility code */
+__private_extern__ int _sl_LogMask; /* mask of priorities to be logged */
+__private_extern__ int _sl_NotifyToken; /* for remote control of priority filter */
+__private_extern__ int _sl_NotifyMaster; /* for remote control of priority filter */
#else /* !BUILDING_VARIANT */
-__private_extern__ pthread_mutex_t _sl_lock = PTHREAD_MUTEX_INITIALIZER;
-__private_extern__ aslclient _sl_asl = NULL;
-__private_extern__ char *_sl_ident = NULL;
-__private_extern__ int _sl_fac = 0;
-__private_extern__ int _sl_opts = 0;
-__private_extern__ int _sl_mask = 0;
+__private_extern__ int _sl_LogFile = -1; /* fd for log */
+__private_extern__ int _sl_connected = 0; /* have done connect */
+__private_extern__ int _sl_LogStat = 0; /* status bits, set by openlog() */
+__private_extern__ const char *_sl_LogTag = NULL; /* string to tag the entry with */
+__private_extern__ int _sl_LogFacility = LOG_USER; /* default facility code */
+__private_extern__ int _sl_LogMask = 0xff; /* mask of priorities to be logged */
+__private_extern__ int _sl_NotifyToken = -1; /* for remote control of max logged priority */
+__private_extern__ int _sl_NotifyMaster = -1; /* for remote control of max logged priority */
#endif /* BUILDING_VARIANT */
+
+__private_extern__ void _sl_init_notify();
+
+#define NOTIFY_SYSTEM_MASTER "com.apple.system.syslog.master"
+#define NOTIFY_PREFIX_SYSTEM "com.apple.system.syslog"
+#define NOTIFY_PREFIX_USER "user.syslog"
+#define NOTIFY_STATE_OFFSET 1000
+
+/* notify SPI */
+uint32_t notify_register_plain(const char *name, int *out_token);
+const char *asl_syslog_faciliy_num_to_name(int);
/*
* syslog, vsyslog --
@@ -115,93 +144,355 @@
void
vsyslog(int pri, const char *fmt, va_list ap)
{
- int fac;
- aslmsg facmsg;
- const char *facility;
-
- facmsg = NULL;
- fac = pri & LOG_FACMASK;
- if (fac != 0)
- {
- facility = asl_syslog_faciliy_num_to_name(fac);
- if (facility != NULL)
- {
- facmsg = asl_new(ASL_TYPE_MSG);
- asl_set(facmsg, ASL_KEY_FACILITY, facility);
- }
- }
-
- asl_vlog(_sl_asl, facmsg, LOG_PRI(pri), fmt, ap);
- if (facmsg != NULL) asl_free(facmsg);
+ int status, i, saved_errno, filter, rc_filter;
+ time_t tick;
+ pid_t pid;
+ uint32_t elen, count;
+ char *p, *str, *expanded, *err_str, hname[MAXHOSTNAMELEN+1];
+ uint64_t cval;
+ int fd, mask, level, facility;
+ aslmsg msg;
+
+ saved_errno = errno;
+
+ /* Check for invalid bits. */
+ if (pri & ~(LOG_PRIMASK | LOG_FACMASK))
+ {
+ syslog(INTERNALLOG, "syslog: unknown facility/priority: %x", pri);
+ pri &= (LOG_PRIMASK | LOG_FACMASK);
+ }
+
+ level = LOG_PRI(pri);
+ facility = pri & LOG_FACMASK;
+
+ if (facility == 0) facility = _sl_LogFacility;
+
+ /* Get remote-control priority filter */
+ filter = _sl_LogMask;
+ rc_filter = 0;
+
+ _sl_init_notify();
+
+ if (_sl_NotifyToken >= 0)
+ {
+ if (notify_get_state(_sl_NotifyToken, &cval) == NOTIFY_STATUS_OK)
+ {
+ if (cval != 0)
+ {
+ filter = cval;
+ rc_filter = 1;
+ }
+ }
+ }
+
+ if ((rc_filter == 0) && (_sl_NotifyMaster >= 0))
+ {
+ if (notify_get_state(_sl_NotifyMaster, &cval) == NOTIFY_STATUS_OK)
+ {
+ if (cval != 0)
+ {
+ filter = cval;
+ }
+ }
+ }
+
+ mask = LOG_MASK(level);
+ if ((mask & filter) == 0) return;
+
+ /* Build the message. */
+ msg = asl_new(ASL_TYPE_MSG);
+
+ if (_sl_LogTag == NULL) _sl_LogTag = *(*_NSGetArgv());
+ if (_sl_LogTag != NULL)
+ {
+ asl_set(msg, ASL_KEY_SENDER, _sl_LogTag);
+ }
+
+ str = (char *)asl_syslog_faciliy_num_to_name(facility);
+ if (str != NULL) asl_set(msg, ASL_KEY_FACILITY, str);
+
+ str = NULL;
+ tick = time(NULL);
+ asprintf(&str, "%lu", tick);
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_TIME, str);
+ free(str);
+ }
+
+ str = NULL;
+ pid = getpid();
+ asprintf(&str, "%u", pid);
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_PID, str);
+ free(str);
+ }
+
+ str = NULL;
+ asprintf(&str, "%d", getuid());
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_UID, str);
+ free(str);
+ }
+
+ str = NULL;
+ asprintf(&str, "%u", getgid());
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_GID, str);
+ free(str);
+ }
+
+ str = NULL;
+ asprintf(&str, "%u", level);
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_LEVEL, str);
+ free(str);
+ }
+
+ status = gethostname(hname, MAXHOSTNAMELEN);
+ if (status < 0) asl_set(msg, ASL_KEY_HOST, "localhost");
+ else asl_set(msg, ASL_KEY_HOST, hname);
+
+ /* check for %m */
+ count = 0;
+ for (i = 0; fmt[i] != '\0'; i++)
+ {
+ if ((fmt[i] == '%') && (fmt[i+1] == 'm')) count++;
+ }
+
+ expanded = NULL;
+ elen = 0;
+ err_str = NULL;
+
+ /* deal with malloc failures gracefully */
+ if (count > 0)
+ {
+ err_str = strdup(strerror(saved_errno));
+ if (err_str == NULL) count = 0;
+ else
+ {
+ elen = strlen(err_str);
+ expanded = malloc(i + (count * elen));
+ if (expanded == NULL) count = 0;
+ }
+ }
+
+ if (expanded == NULL) expanded = (char *)fmt;
+ if (count > 0)
+ {
+ p = expanded;
+
+ for (i = 0; fmt[i] != '\0'; i++)
+ {
+ if ((fmt[i] == '%') && (fmt[i+1] == 'm'))
+ {
+ memcpy(p, err_str, elen);
+ p += elen;
+ i++;
+ }
+ else
+ {
+ *p++ = fmt[i];
+ }
+ }
+
+ *p = '\0';
+ }
+
+ if (err_str != NULL) free(err_str);
+
+ vasprintf(&str, expanded, ap);
+ if (count > 0) free(expanded);
+
+ if (str != NULL)
+ {
+ asl_set(msg, ASL_KEY_MSG, str);
+
+ /* Output to stderr if requested. */
+ if (_sl_LogStat & LOG_PERROR)
+ {
+ p = NULL;
+ if (_sl_LogStat & LOG_PID) asprintf(&p, "%s[%u]: %s", (_sl_LogTag == NULL) ? "???" : _sl_LogTag, pid, str);
+ else asprintf(&p, "%s: %s", (_sl_LogTag == NULL) ? "???" : _sl_LogTag, str);
+
+ if (p != NULL)
+ {
+ struct iovec iov[2];
+
+ iov[0].iov_base = p;
+ iov[0].iov_len = strlen(p);
+ iov[1].iov_base = "\n";
+ iov[1].iov_len = 1;
+ writev(STDERR_FILENO, iov, 2);
+ free(p);
+ }
+ }
+
+ free(str);
+ }
+
+ /* Get connected, output the message to the local logger. */
+ str = asl_format_message(msg, ASL_MSG_FMT_RAW, ASL_TIME_FMT_SEC, &count);
+ if (str != NULL)
+ {
+ p = NULL;
+ asprintf(&p, "%10u %s", count, str);
+ free(str);
+
+ if (p != NULL)
+ {
+ count += 12;
+ if (_sl_connected == 0) openlog(_sl_LogTag, _sl_LogStat | LOG_NDELAY, 0);
+
+ status = send(_sl_LogFile, p, count, 0);
+ if (status< 0)
+ {
+ closelog();
+ openlog(_sl_LogTag, _sl_LogStat | LOG_NDELAY, 0);
+ status = send(_sl_LogFile, p, count, 0);
+ }
+
+ if (status >= 0)
+ {
+ free(p);
+ asl_free(msg);
+ return;
+ }
+
+ free(p);
+ }
+ }
+
+ /*
+ * Output the message to the console.
+ */
+ if (_sl_LogStat & LOG_CONS && (fd = open(_PATH_CONSOLE, O_WRONLY | O_NOCTTY | O_NONBLOCK)) >= 0)
+ {
+ count = 0;
+
+ p = asl_format_message(msg, ASL_MSG_FMT_STD, ASL_TIME_FMT_LCL, &count);
+ if (p != NULL)
+ {
+ struct iovec iov;
+
+ /* count includes trailing nul */
+ iov.iov_len = count - 1;
+ iov.iov_base = p;
+ writev(fd, &iov, 1);
+
+ free(p);
+ }
+
+ close(fd);
+ }
+
+ asl_free(msg);
}
#ifndef BUILDING_VARIANT
+static struct sockaddr_un SyslogAddr; /* AF_UNIX address of local logger */
+
+__private_extern__ void
+_sl_init_notify()
+{
+ int status;
+ char *notify_name;
+ const char *prefix;
+
+ if (_sl_LogStat & LOG_NO_NOTIFY)
+ {
+ _sl_NotifyMaster = -2;
+ _sl_NotifyToken = -2;
+ return;
+ }
+
+ if (_sl_NotifyMaster == -1)
+ {
+ status = notify_register_plain(NOTIFY_SYSTEM_MASTER, &_sl_NotifyMaster);
+ if (status != NOTIFY_STATUS_OK) _sl_NotifyMaster = -2;
+ }
+
+ if (_sl_NotifyToken == -1)
+ {
+ _sl_NotifyToken = -2;
+
+ notify_name = NULL;
+ prefix = NOTIFY_PREFIX_USER;
+ if (getuid() == 0) prefix = NOTIFY_PREFIX_SYSTEM;
+ asprintf(¬ify_name, "%s.%d", prefix, getpid());
+
+ if (notify_name != NULL)
+ {
+ status = notify_register_plain(notify_name, &_sl_NotifyToken);
+ free(notify_name);
+ if (status != NOTIFY_STATUS_OK) _sl_NotifyToken = -2;
+ }
+ }
+}
+
void
-openlog(const char *ident, int opts, int logfac)
-{
- const char *facility;
- uint32_t asl_opts;
-
- pthread_mutex_lock(&_sl_lock);
-
- /* close existing aslclient */
- if (_sl_asl != NULL) asl_close(_sl_asl);
- _sl_asl = NULL;
-
- if (_sl_ident != NULL) free(_sl_ident);
- _sl_ident = NULL;
-
- /* open with specified parameters */
-
- if (ident != NULL) _sl_ident = strdup(ident);
- /* NB we allow the strdup to fail silently */
-
- _sl_fac = logfac;
- facility = asl_syslog_faciliy_num_to_name(_sl_fac);
-
- _sl_opts = opts;
- asl_opts = ASL_OPT_SYSLOG_LEGACY;
-
- if (_sl_opts & LOG_NO_NOTIFY) asl_opts |= ASL_OPT_NO_REMOTE;
- if (_sl_opts & LOG_PERROR) asl_opts |= ASL_OPT_STDERR;
-
- _sl_mask = ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG);
-
- _sl_asl = asl_open(_sl_ident, facility, asl_opts);
- asl_set_filter(_sl_asl, _sl_mask);
-
- pthread_mutex_unlock(&_sl_lock);
+openlog(ident, logstat, logfac)
+ const char *ident;
+ int logstat, logfac;
+{
+ if (ident != NULL) _sl_LogTag = ident;
+
+ _sl_LogStat = logstat;
+
+ if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0) _sl_LogFacility = logfac;
+
+ if (_sl_LogFile == -1)
+ {
+ SyslogAddr.sun_family = AF_UNIX;
+ (void)strncpy(SyslogAddr.sun_path, _PATH_LOG, sizeof(SyslogAddr.sun_path));
+ if (_sl_LogStat & LOG_NDELAY)
+ {
+ if ((_sl_LogFile = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1) return;
+ (void)fcntl(_sl_LogFile, F_SETFD, 1);
+ }
+ }
+
+ if ((_sl_LogFile != -1) && (_sl_connected == 0))
+ {
+ if (connect(_sl_LogFile, (struct sockaddr *)&SyslogAddr, sizeof(SyslogAddr)) == -1)
+ {
+ (void)close(_sl_LogFile);
+ _sl_LogFile = -1;
+ }
+ else
+ {
+ _sl_connected = 1;
+ }
+ }
+
+ _sl_init_notify();
}
void
closelog()
{
- pthread_mutex_lock(&_sl_lock);
-
- if (_sl_asl != NULL) asl_close(_sl_asl);
- _sl_asl = NULL;
-
- if (_sl_ident != NULL) free(_sl_ident);
- _sl_ident = NULL;
-
- pthread_mutex_unlock(&_sl_lock);
+ if (_sl_LogFile >= 0) {
+ (void)close(_sl_LogFile);
+ _sl_LogFile = -1;
+ }
+ _sl_connected = 0;
}
/* setlogmask -- set the log mask level */
int
-setlogmask(int mask)
-{
- int oldmask;
-
- pthread_mutex_lock(&_sl_lock);
-
- _sl_mask = mask;
- oldmask = asl_set_filter(_sl_asl, mask);
-
- pthread_mutex_unlock(&_sl_lock);
-
- return oldmask;
+setlogmask(pmask)
+ int pmask;
+{
+ int omask;
+
+ omask = _sl_LogMask;
+ if (pmask != 0) _sl_LogMask = pmask;
+ return (omask);
}
#endif /* !BUILDING_VARIANT */