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--- Libc/Libc-763.13/gen/syslog.c
+++ Libc/Libc-391/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 +53,22 @@
* SUCH DAMAGE.
*/
+#include <sys/types.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 <string.h>
-#include <stdint.h>
-#include <pthread.h>
-#include <asl.h>
-#include "asl_private.h"
+#include <time.h>
+#include <unistd.h>
+#include <notify.h>
#ifdef __STDC__
#include <stdarg.h>
@@ -68,24 +76,40 @@
#include <varargs.h>
#endif
+#include <crt_externs.h>
+
#define LOG_NO_NOTIFY 0x1000
-extern const char *asl_syslog_faciliy_num_to_name(int n);
#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_get_state(int token, int *state);
+uint32_t notify_register_plain(const char *name, int *out_token);
/*
* syslog, vsyslog --
@@ -113,95 +137,287 @@
}
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);
+vsyslog(pri, fmt, ap)
+ int pri;
+ register const char *fmt;
+ va_list ap;
+{
+ register int cnt;
+ register char ch, *p, *t;
+ time_t now;
+ int fd, saved_errno, filter, cval, rc_filter, primask;
+#define TBUF_LEN 2048
+#define FMT_LEN 1024
+ char *stdp, tbuf[TBUF_LEN], fmt_cpy[FMT_LEN];
+ int tbuf_left, fmt_left, prlen;
+
+#define INTERNALLOG LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
+ /* Check for invalid bits. */
+ if (pri & ~(LOG_PRIMASK|LOG_FACMASK))
+ {
+ syslog(INTERNALLOG, "syslog: unknown facility/priority: %x", pri);
+ pri &= LOG_PRIMASK|LOG_FACMASK;
+ }
+
+ /* 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;
+ }
+ }
+ }
+
+ primask = LOG_MASK(LOG_PRI(pri));
+ if ((primask & filter) == 0) return;
+
+ saved_errno = errno;
+
+ /* Set default facility if none specified. */
+ if ((pri & LOG_FACMASK) == 0) pri |= _sl_LogFacility;
+
+ /* Build the message. */
+
+ /*
+ * Although it's tempting, we can't ignore the possibility of
+ * overflowing the buffer when assembling the "fixed" portion
+ * of the message. Strftime's "%h" directive expands to the
+ * locale's abbreviated month name, but if the user has the
+ * ability to construct to his own locale files, it may be
+ * arbitrarily long.
+ */
+ (void)time(&now);
+
+ p = tbuf;
+ tbuf_left = TBUF_LEN;
+
+#define DEC() \
+ do { \
+ if (prlen >= tbuf_left) \
+ prlen = tbuf_left - 1; \
+ p += prlen; \
+ tbuf_left -= prlen; \
+ } while (0)
+
+ prlen = snprintf(p, tbuf_left, "<%d>", pri);
+ DEC();
+
+ prlen = strftime(p, tbuf_left, "%h %e %T ", localtime(&now));
+ DEC();
+
+ if (_sl_LogStat & LOG_PERROR) stdp = p;
+
+ if (_sl_LogTag == NULL) _sl_LogTag = *(*_NSGetArgv());
+
+ if (_sl_LogTag != NULL)
+ {
+ prlen = snprintf(p, tbuf_left, "%s", _sl_LogTag);
+ DEC();
+ }
+
+ if (_sl_LogStat & LOG_PID)
+ {
+ prlen = snprintf(p, tbuf_left, "[%d]", getpid());
+ DEC();
+ }
+
+ if (_sl_LogTag != NULL)
+ {
+ if (tbuf_left > 1)
+ {
+ *p++ = ':';
+ tbuf_left--;
+ }
+ if (tbuf_left > 1)
+ {
+ *p++ = ' ';
+ tbuf_left--;
+ }
+ }
+
+ /*
+ * We wouldn't need this mess if printf handled %m, or if
+ * strerror() had been invented before syslog().
+ */
+ for (t = fmt_cpy, fmt_left = FMT_LEN; (ch = *fmt); ++fmt)
+ {
+ if (ch == '%' && fmt[1] == 'm')
+ {
+ ++fmt;
+ prlen = snprintf(t, fmt_left, "%s", strerror(saved_errno));
+ if (prlen >= fmt_left) prlen = fmt_left - 1;
+ t += prlen;
+ fmt_left -= prlen;
+ }
+ else
+ {
+ if (fmt_left > 1)
+ {
+ *t++ = ch;
+ fmt_left--;
+ }
+ }
+ }
+
+ *t = '\0';
+
+ prlen = vsnprintf(p, tbuf_left, fmt_cpy, ap);
+ DEC();
+ cnt = p - tbuf;
+
+ /* Output to stderr if requested. */
+ if (_sl_LogStat & LOG_PERROR)
+ {
+ struct iovec iov[2];
+
+ iov[0].iov_base = stdp;
+ iov[0].iov_len = cnt - (stdp - tbuf);
+ iov[1].iov_base = "\n";
+ iov[1].iov_len = 1;
+ (void)writev(STDERR_FILENO, iov, 2);
+ }
+
+ /* Get connected, output the message to the local logger. */
+ if (_sl_connected == 0) openlog(_sl_LogTag, _sl_LogStat | LOG_NDELAY, 0);
+ if (send(_sl_LogFile, tbuf, cnt, 0) >= 0) return;
+
+ /*
+ * Output the message to the console; don't worry about blocking,
+ * if console blocks everything will. Make sure the error reported
+ * is the one from the syslogd failure.
+ */
+ if (_sl_LogStat & LOG_CONS && (fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0)
+ {
+ struct iovec iov[2];
+
+ p = strchr(tbuf, '>') + 1;
+ iov[0].iov_base = p;
+ iov[0].iov_len = cnt - (p - tbuf);
+ iov[1].iov_base = "\r\n";
+ iov[1].iov_len = 2;
+ (void)writev(fd, iov, 2);
+ (void)close(fd);
+ }
}
#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);
+ (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 */