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Diffstat (limited to 'contrib/bind9/lib/bind/isc/logging.c')
-rw-r--r--contrib/bind9/lib/bind/isc/logging.c720
1 files changed, 0 insertions, 720 deletions
diff --git a/contrib/bind9/lib/bind/isc/logging.c b/contrib/bind9/lib/bind/isc/logging.c
deleted file mode 100644
index d4c7be28523b..000000000000
--- a/contrib/bind9/lib/bind/isc/logging.c
+++ /dev/null
@@ -1,720 +0,0 @@
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Copyright (c) 1996-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#if !defined(LINT) && !defined(CODECENTER)
-static const char rcsid[] = "$Id: logging.c,v 1.3.2.1.4.2 2004/03/17 01:49:42 marka Exp $";
-#endif /* not lint */
-
-#include "port_before.h"
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-
-#include <fcntl.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <syslog.h>
-#include <errno.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <isc/assertions.h>
-#include <isc/logging.h>
-#include <isc/memcluster.h>
-#include <isc/misc.h>
-
-#include "port_after.h"
-
-#ifdef VSPRINTF_CHAR
-# define VSPRINTF(x) strlen(vsprintf/**/x)
-#else
-# define VSPRINTF(x) ((size_t)vsprintf x)
-#endif
-
-#include "logging_p.h"
-
-static const int syslog_priority[] = { LOG_DEBUG, LOG_INFO, LOG_NOTICE,
- LOG_WARNING, LOG_ERR, LOG_CRIT };
-
-static const char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
-
-static const char *level_text[] = {
- "info: ", "notice: ", "warning: ", "error: ", "critical: "
-};
-
-static void
-version_rename(log_channel chan) {
- unsigned int ver;
- char old_name[PATH_MAX+1];
- char new_name[PATH_MAX+1];
-
- ver = chan->out.file.versions;
- if (ver < 1)
- return;
- if (ver > LOG_MAX_VERSIONS)
- ver = LOG_MAX_VERSIONS;
- /*
- * Need to have room for '.nn' (XXX assumes LOG_MAX_VERSIONS < 100)
- */
- if (strlen(chan->out.file.name) > (size_t)(PATH_MAX-3))
- return;
- for (ver--; ver > 0; ver--) {
- sprintf(old_name, "%s.%d", chan->out.file.name, ver-1);
- sprintf(new_name, "%s.%d", chan->out.file.name, ver);
- (void)isc_movefile(old_name, new_name);
- }
- sprintf(new_name, "%s.0", chan->out.file.name);
- (void)isc_movefile(chan->out.file.name, new_name);
-}
-
-FILE *
-log_open_stream(log_channel chan) {
- FILE *stream;
- int fd, flags;
- struct stat sb;
- int regular;
-
- if (chan == NULL || chan->type != log_file) {
- errno = EINVAL;
- return (NULL);
- }
-
- /*
- * Don't open already open streams
- */
- if (chan->out.file.stream != NULL)
- return (chan->out.file.stream);
-
- if (stat(chan->out.file.name, &sb) < 0) {
- if (errno != ENOENT) {
- syslog(LOG_ERR,
- "log_open_stream: stat of %s failed: %s",
- chan->out.file.name, strerror(errno));
- chan->flags |= LOG_CHANNEL_BROKEN;
- return (NULL);
- }
- regular = 1;
- } else
- regular = (sb.st_mode & S_IFREG);
-
- if (chan->out.file.versions) {
- if (!regular) {
- syslog(LOG_ERR,
- "log_open_stream: want versions but %s isn't a regular file",
- chan->out.file.name);
- chan->flags |= LOG_CHANNEL_BROKEN;
- errno = EINVAL;
- return (NULL);
- }
- }
-
- flags = O_WRONLY|O_CREAT|O_APPEND;
-
- if ((chan->flags & LOG_TRUNCATE) != 0) {
- if (regular) {
- (void)unlink(chan->out.file.name);
- flags |= O_EXCL;
- } else {
- syslog(LOG_ERR,
- "log_open_stream: want truncation but %s isn't a regular file",
- chan->out.file.name);
- chan->flags |= LOG_CHANNEL_BROKEN;
- errno = EINVAL;
- return (NULL);
- }
- }
-
- fd = open(chan->out.file.name, flags,
- S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
- if (fd < 0) {
- syslog(LOG_ERR, "log_open_stream: open(%s) failed: %s",
- chan->out.file.name, strerror(errno));
- chan->flags |= LOG_CHANNEL_BROKEN;
- return (NULL);
- }
- stream = fdopen(fd, "a");
- if (stream == NULL) {
- syslog(LOG_ERR, "log_open_stream: fdopen() failed");
- chan->flags |= LOG_CHANNEL_BROKEN;
- return (NULL);
- }
- (void) fchown(fd, chan->out.file.owner, chan->out.file.group);
-
- chan->out.file.stream = stream;
- return (stream);
-}
-
-int
-log_close_stream(log_channel chan) {
- FILE *stream;
-
- if (chan == NULL || chan->type != log_file) {
- errno = EINVAL;
- return (0);
- }
- stream = chan->out.file.stream;
- chan->out.file.stream = NULL;
- if (stream != NULL && fclose(stream) == EOF)
- return (-1);
- return (0);
-}
-
-void
-log_close_debug_channels(log_context lc) {
- log_channel_list lcl;
- int i;
-
- for (i = 0; i < lc->num_categories; i++)
- for (lcl = lc->categories[i]; lcl != NULL; lcl = lcl->next)
- if (lcl->channel->type == log_file &&
- lcl->channel->out.file.stream != NULL &&
- lcl->channel->flags & LOG_REQUIRE_DEBUG)
- (void)log_close_stream(lcl->channel);
-}
-
-FILE *
-log_get_stream(log_channel chan) {
- if (chan == NULL || chan->type != log_file) {
- errno = EINVAL;
- return (NULL);
- }
- return (chan->out.file.stream);
-}
-
-char *
-log_get_filename(log_channel chan) {
- if (chan == NULL || chan->type != log_file) {
- errno = EINVAL;
- return (NULL);
- }
- return (chan->out.file.name);
-}
-
-int
-log_check_channel(log_context lc, int level, log_channel chan) {
- int debugging, chan_level;
-
- REQUIRE(lc != NULL);
-
- debugging = ((lc->flags & LOG_OPTION_DEBUG) != 0);
-
- /*
- * If not debugging, short circuit debugging messages very early.
- */
- if (level > 0 && !debugging)
- return (0);
-
- if ((chan->flags & (LOG_CHANNEL_BROKEN|LOG_CHANNEL_OFF)) != 0)
- return (0);
-
- /* Some channels only log when debugging is on. */
- if ((chan->flags & LOG_REQUIRE_DEBUG) && !debugging)
- return (0);
-
- /* Some channels use the global level. */
- if ((chan->flags & LOG_USE_CONTEXT_LEVEL) != 0) {
- chan_level = lc->level;
- } else
- chan_level = chan->level;
-
- if (level > chan_level)
- return (0);
-
- return (1);
-}
-
-int
-log_check(log_context lc, int category, int level) {
- log_channel_list lcl;
- int debugging;
-
- REQUIRE(lc != NULL);
-
- debugging = ((lc->flags & LOG_OPTION_DEBUG) != 0);
-
- /*
- * If not debugging, short circuit debugging messages very early.
- */
- if (level > 0 && !debugging)
- return (0);
-
- if (category < 0 || category > lc->num_categories)
- category = 0; /* use default */
- lcl = lc->categories[category];
- if (lcl == NULL) {
- category = 0;
- lcl = lc->categories[0];
- }
-
- for ( /* nothing */; lcl != NULL; lcl = lcl->next) {
- if (log_check_channel(lc, level, lcl->channel))
- return (1);
- }
- return (0);
-}
-
-void
-log_vwrite(log_context lc, int category, int level, const char *format,
- va_list args) {
- log_channel_list lcl;
- int pri, debugging, did_vsprintf = 0;
- int original_category;
- FILE *stream;
- log_channel chan;
- struct timeval tv;
- struct tm *local_tm;
-#ifdef HAVE_TIME_R
- struct tm tm_tmp;
-#endif
- time_t tt;
- const char *category_name;
- const char *level_str;
- char time_buf[256];
- char level_buf[256];
-
- REQUIRE(lc != NULL);
-
- debugging = (lc->flags & LOG_OPTION_DEBUG);
-
- /*
- * If not debugging, short circuit debugging messages very early.
- */
- if (level > 0 && !debugging)
- return;
-
- if (category < 0 || category > lc->num_categories)
- category = 0; /* use default */
- original_category = category;
- lcl = lc->categories[category];
- if (lcl == NULL) {
- category = 0;
- lcl = lc->categories[0];
- }
-
- /*
- * Get the current time and format it.
- */
- time_buf[0]='\0';
- if (gettimeofday(&tv, NULL) < 0) {
- syslog(LOG_INFO, "gettimeofday failed in log_vwrite()");
- } else {
- tt = tv.tv_sec;
-#ifdef HAVE_TIME_R
- local_tm = localtime_r(&tt, &tm_tmp);
-#else
- local_tm = localtime(&tt);
-#endif
- if (local_tm != NULL) {
- sprintf(time_buf, "%02d-%s-%4d %02d:%02d:%02d.%03ld ",
- local_tm->tm_mday, months[local_tm->tm_mon],
- local_tm->tm_year+1900, local_tm->tm_hour,
- local_tm->tm_min, local_tm->tm_sec,
- (long)tv.tv_usec/1000);
- }
- }
-
- /*
- * Make a string representation of the current category and level
- */
-
- if (lc->category_names != NULL &&
- lc->category_names[original_category] != NULL)
- category_name = lc->category_names[original_category];
- else
- category_name = "";
-
- if (level >= log_critical) {
- if (level >= 0) {
- sprintf(level_buf, "debug %d: ", level);
- level_str = level_buf;
- } else
- level_str = level_text[-level-1];
- } else {
- sprintf(level_buf, "level %d: ", level);
- level_str = level_buf;
- }
-
- /*
- * Write the message to channels.
- */
- for ( /* nothing */; lcl != NULL; lcl = lcl->next) {
- chan = lcl->channel;
-
- if (!log_check_channel(lc, level, chan))
- continue;
-
- if (!did_vsprintf) {
- if (VSPRINTF((lc->buffer, format, args)) >
- (size_t)LOG_BUFFER_SIZE) {
- syslog(LOG_CRIT,
- "memory overrun in log_vwrite()");
- exit(1);
- }
- did_vsprintf = 1;
- }
-
- switch (chan->type) {
- case log_syslog:
- if (level >= log_critical)
- pri = (level >= 0) ? 0 : -level;
- else
- pri = -log_critical;
- syslog(chan->out.facility|syslog_priority[pri],
- "%s%s%s%s",
- (chan->flags & LOG_TIMESTAMP) ? time_buf : "",
- (chan->flags & LOG_PRINT_CATEGORY) ?
- category_name : "",
- (chan->flags & LOG_PRINT_LEVEL) ?
- level_str : "",
- lc->buffer);
- break;
- case log_file:
- stream = chan->out.file.stream;
- if (stream == NULL) {
- stream = log_open_stream(chan);
- if (stream == NULL)
- break;
- }
- if (chan->out.file.max_size != ULONG_MAX) {
- long pos;
-
- pos = ftell(stream);
- if (pos >= 0 &&
- (unsigned long)pos >
- chan->out.file.max_size) {
- /*
- * try to roll over the log files,
- * ignoring all all return codes
- * except the open (we don't want
- * to write any more anyway)
- */
- log_close_stream(chan);
- version_rename(chan);
- stream = log_open_stream(chan);
- if (stream == NULL)
- break;
- }
- }
- fprintf(stream, "%s%s%s%s\n",
- (chan->flags & LOG_TIMESTAMP) ? time_buf : "",
- (chan->flags & LOG_PRINT_CATEGORY) ?
- category_name : "",
- (chan->flags & LOG_PRINT_LEVEL) ?
- level_str : "",
- lc->buffer);
- fflush(stream);
- break;
- case log_null:
- break;
- default:
- syslog(LOG_ERR,
- "unknown channel type in log_vwrite()");
- }
- }
-}
-
-void
-log_write(log_context lc, int category, int level, const char *format, ...) {
- va_list args;
-
- va_start(args, format);
- log_vwrite(lc, category, level, format, args);
- va_end(args);
-}
-
-/*
- * Functions to create, set, or destroy contexts
- */
-
-int
-log_new_context(int num_categories, char **category_names, log_context *lc) {
- log_context nlc;
-
- nlc = memget(sizeof (struct log_context));
- if (nlc == NULL) {
- errno = ENOMEM;
- return (-1);
- }
- nlc->num_categories = num_categories;
- nlc->category_names = category_names;
- nlc->categories = memget(num_categories * sizeof (log_channel_list));
- if (nlc->categories == NULL) {
- memput(nlc, sizeof (struct log_context));
- errno = ENOMEM;
- return (-1);
- }
- memset(nlc->categories, '\0',
- num_categories * sizeof (log_channel_list));
- nlc->flags = 0U;
- nlc->level = 0;
- *lc = nlc;
- return (0);
-}
-
-void
-log_free_context(log_context lc) {
- log_channel_list lcl, lcl_next;
- log_channel chan;
- int i;
-
- REQUIRE(lc != NULL);
-
- for (i = 0; i < lc->num_categories; i++)
- for (lcl = lc->categories[i]; lcl != NULL; lcl = lcl_next) {
- lcl_next = lcl->next;
- chan = lcl->channel;
- (void)log_free_channel(chan);
- memput(lcl, sizeof (struct log_channel_list));
- }
- memput(lc->categories,
- lc->num_categories * sizeof (log_channel_list));
- memput(lc, sizeof (struct log_context));
-}
-
-int
-log_add_channel(log_context lc, int category, log_channel chan) {
- log_channel_list lcl;
-
- if (lc == NULL || category < 0 || category >= lc->num_categories) {
- errno = EINVAL;
- return (-1);
- }
-
- lcl = memget(sizeof (struct log_channel_list));
- if (lcl == NULL) {
- errno = ENOMEM;
- return(-1);
- }
- lcl->channel = chan;
- lcl->next = lc->categories[category];
- lc->categories[category] = lcl;
- chan->references++;
- return (0);
-}
-
-int
-log_remove_channel(log_context lc, int category, log_channel chan) {
- log_channel_list lcl, prev_lcl, next_lcl;
- int found = 0;
-
- if (lc == NULL || category < 0 || category >= lc->num_categories) {
- errno = EINVAL;
- return (-1);
- }
-
- for (prev_lcl = NULL, lcl = lc->categories[category];
- lcl != NULL;
- lcl = next_lcl) {
- next_lcl = lcl->next;
- if (lcl->channel == chan) {
- log_free_channel(chan);
- if (prev_lcl != NULL)
- prev_lcl->next = next_lcl;
- else
- lc->categories[category] = next_lcl;
- memput(lcl, sizeof (struct log_channel_list));
- /*
- * We just set found instead of returning because
- * the channel might be on the list more than once.
- */
- found = 1;
- } else
- prev_lcl = lcl;
- }
- if (!found) {
- errno = ENOENT;
- return (-1);
- }
- return (0);
-}
-
-int
-log_option(log_context lc, int option, int value) {
- if (lc == NULL) {
- errno = EINVAL;
- return (-1);
- }
- switch (option) {
- case LOG_OPTION_DEBUG:
- if (value)
- lc->flags |= option;
- else
- lc->flags &= ~option;
- break;
- case LOG_OPTION_LEVEL:
- lc->level = value;
- break;
- default:
- errno = EINVAL;
- return (-1);
- }
- return (0);
-}
-
-int
-log_category_is_active(log_context lc, int category) {
- if (lc == NULL) {
- errno = EINVAL;
- return (-1);
- }
- if (category >= 0 && category < lc->num_categories &&
- lc->categories[category] != NULL)
- return (1);
- return (0);
-}
-
-log_channel
-log_new_syslog_channel(unsigned int flags, int level, int facility) {
- log_channel chan;
-
- chan = memget(sizeof (struct log_channel));
- if (chan == NULL) {
- errno = ENOMEM;
- return (NULL);
- }
- chan->type = log_syslog;
- chan->flags = flags;
- chan->level = level;
- chan->out.facility = facility;
- chan->references = 0;
- return (chan);
-}
-
-log_channel
-log_new_file_channel(unsigned int flags, int level,
- const char *name, FILE *stream, unsigned int versions,
- unsigned long max_size) {
- log_channel chan;
-
- chan = memget(sizeof (struct log_channel));
- if (chan == NULL) {
- errno = ENOMEM;
- return (NULL);
- }
- chan->type = log_file;
- chan->flags = flags;
- chan->level = level;
- if (name != NULL) {
- size_t len;
-
- len = strlen(name);
- /*
- * Quantize length to a multiple of 256. There's space for the
- * NUL, since if len is a multiple of 256, the size chosen will
- * be the next multiple.
- */
- chan->out.file.name_size = ((len / 256) + 1) * 256;
- chan->out.file.name = memget(chan->out.file.name_size);
- if (chan->out.file.name == NULL) {
- memput(chan, sizeof (struct log_channel));
- errno = ENOMEM;
- return (NULL);
- }
- /* This is safe. */
- strcpy(chan->out.file.name, name);
- } else {
- chan->out.file.name_size = 0;
- chan->out.file.name = NULL;
- }
- chan->out.file.stream = stream;
- chan->out.file.versions = versions;
- chan->out.file.max_size = max_size;
- chan->out.file.owner = getuid();
- chan->out.file.group = getgid();
- chan->references = 0;
- return (chan);
-}
-
-int
-log_set_file_owner(log_channel chan, uid_t owner, gid_t group) {
- if (chan->type != log_file) {
- errno = EBADF;
- return (-1);
- }
- chan->out.file.owner = owner;
- chan->out.file.group = group;
- return (0);
-}
-
-log_channel
-log_new_null_channel() {
- log_channel chan;
-
- chan = memget(sizeof (struct log_channel));
- if (chan == NULL) {
- errno = ENOMEM;
- return (NULL);
- }
- chan->type = log_null;
- chan->flags = LOG_CHANNEL_OFF;
- chan->level = log_info;
- chan->references = 0;
- return (chan);
-}
-
-int
-log_inc_references(log_channel chan) {
- if (chan == NULL) {
- errno = EINVAL;
- return (-1);
- }
- chan->references++;
- return (0);
-}
-
-int
-log_dec_references(log_channel chan) {
- if (chan == NULL || chan->references <= 0) {
- errno = EINVAL;
- return (-1);
- }
- chan->references--;
- return (0);
-}
-
-log_channel_type
-log_get_channel_type(log_channel chan) {
- REQUIRE(chan != NULL);
-
- return (chan->type);
-}
-
-int
-log_free_channel(log_channel chan) {
- if (chan == NULL || chan->references <= 0) {
- errno = EINVAL;
- return (-1);
- }
- chan->references--;
- if (chan->references == 0) {
- if (chan->type == log_file) {
- if ((chan->flags & LOG_CLOSE_STREAM) &&
- chan->out.file.stream != NULL)
- (void)fclose(chan->out.file.stream);
- if (chan->out.file.name != NULL)
- memput(chan->out.file.name,
- chan->out.file.name_size);
- }
- memput(chan, sizeof (struct log_channel));
- }
- return (0);
-}
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