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/*
* Copyright (C) 2004-2007, 2011 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or 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.
*/
/* $Id: logconf.c,v 1.42.816.3 2011/03/05 23:52:06 tbox Exp $ */
/*! \file */
#include <config.h>
#include <isc/file.h>
#include <isc/offset.h>
#include <isc/result.h>
#include <isc/stdio.h>
#include <isc/string.h>
#include <isc/syslog.h>
#include <isccfg/cfg.h>
#include <isccfg/log.h>
#include <named/log.h>
#include <named/logconf.h>
#define CHECK(op) \
do { result = (op); \
if (result != ISC_R_SUCCESS) goto cleanup; \
} while (0)
/*%
* Set up a logging category according to the named.conf data
* in 'ccat' and add it to 'lctx'.
*/
static isc_result_t
category_fromconf(const cfg_obj_t *ccat, isc_logconfig_t *lctx) {
isc_result_t result;
const char *catname;
isc_logcategory_t *category;
isc_logmodule_t *module;
const cfg_obj_t *destinations = NULL;
const cfg_listelt_t *element = NULL;
catname = cfg_obj_asstring(cfg_tuple_get(ccat, "name"));
category = isc_log_categorybyname(ns_g_lctx, catname);
if (category == NULL) {
cfg_obj_log(ccat, ns_g_lctx, ISC_LOG_ERROR,
"unknown logging category '%s' ignored",
catname);
/*
* Allow further processing by returning success.
*/
return (ISC_R_SUCCESS);
}
module = NULL;
destinations = cfg_tuple_get(ccat, "destinations");
for (element = cfg_list_first(destinations);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *channel = cfg_listelt_value(element);
const char *channelname = cfg_obj_asstring(channel);
result = isc_log_usechannel(lctx, channelname, category,
module);
if (result != ISC_R_SUCCESS) {
isc_log_write(ns_g_lctx, CFG_LOGCATEGORY_CONFIG,
NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
"logging channel '%s': %s", channelname,
isc_result_totext(result));
return (result);
}
}
return (ISC_R_SUCCESS);
}
/*%
* Set up a logging channel according to the named.conf data
* in 'cchan' and add it to 'lctx'.
*/
static isc_result_t
channel_fromconf(const cfg_obj_t *channel, isc_logconfig_t *lctx) {
isc_result_t result;
isc_logdestination_t dest;
unsigned int type;
unsigned int flags = 0;
int level;
const char *channelname;
const cfg_obj_t *fileobj = NULL;
const cfg_obj_t *syslogobj = NULL;
const cfg_obj_t *nullobj = NULL;
const cfg_obj_t *stderrobj = NULL;
const cfg_obj_t *severity = NULL;
int i;
channelname = cfg_obj_asstring(cfg_map_getname(channel));
(void)cfg_map_get(channel, "file", &fileobj);
(void)cfg_map_get(channel, "syslog", &syslogobj);
(void)cfg_map_get(channel, "null", &nullobj);
(void)cfg_map_get(channel, "stderr", &stderrobj);
i = 0;
if (fileobj != NULL)
i++;
if (syslogobj != NULL)
i++;
if (nullobj != NULL)
i++;
if (stderrobj != NULL)
i++;
if (i != 1) {
cfg_obj_log(channel, ns_g_lctx, ISC_LOG_ERROR,
"channel '%s': exactly one of file, syslog, "
"null, and stderr must be present", channelname);
return (ISC_R_FAILURE);
}
type = ISC_LOG_TONULL;
if (fileobj != NULL) {
const cfg_obj_t *pathobj = cfg_tuple_get(fileobj, "file");
const cfg_obj_t *sizeobj = cfg_tuple_get(fileobj, "size");
const cfg_obj_t *versionsobj =
cfg_tuple_get(fileobj, "versions");
isc_int32_t versions = ISC_LOG_ROLLNEVER;
isc_offset_t size = 0;
type = ISC_LOG_TOFILE;
if (versionsobj != NULL && cfg_obj_isuint32(versionsobj))
versions = cfg_obj_asuint32(versionsobj);
if (versionsobj != NULL && cfg_obj_isstring(versionsobj) &&
strcasecmp(cfg_obj_asstring(versionsobj), "unlimited") == 0)
versions = ISC_LOG_ROLLINFINITE;
if (sizeobj != NULL &&
cfg_obj_isuint64(sizeobj) &&
cfg_obj_asuint64(sizeobj) < ISC_OFFSET_MAXIMUM)
size = (isc_offset_t)cfg_obj_asuint64(sizeobj);
dest.file.stream = NULL;
dest.file.name = cfg_obj_asstring(pathobj);
dest.file.versions = versions;
dest.file.maximum_size = size;
} else if (syslogobj != NULL) {
int facility = LOG_DAEMON;
type = ISC_LOG_TOSYSLOG;
if (cfg_obj_isstring(syslogobj)) {
const char *facilitystr = cfg_obj_asstring(syslogobj);
(void)isc_syslog_facilityfromstring(facilitystr,
&facility);
}
dest.facility = facility;
} else if (stderrobj != NULL) {
type = ISC_LOG_TOFILEDESC;
dest.file.stream = stderr;
dest.file.name = NULL;
dest.file.versions = ISC_LOG_ROLLNEVER;
dest.file.maximum_size = 0;
}
/*
* Munge flags.
*/
{
const cfg_obj_t *printcat = NULL;
const cfg_obj_t *printsev = NULL;
const cfg_obj_t *printtime = NULL;
(void)cfg_map_get(channel, "print-category", &printcat);
(void)cfg_map_get(channel, "print-severity", &printsev);
(void)cfg_map_get(channel, "print-time", &printtime);
if (printcat != NULL && cfg_obj_asboolean(printcat))
flags |= ISC_LOG_PRINTCATEGORY;
if (printtime != NULL && cfg_obj_asboolean(printtime))
flags |= ISC_LOG_PRINTTIME;
if (printsev != NULL && cfg_obj_asboolean(printsev))
flags |= ISC_LOG_PRINTLEVEL;
}
level = ISC_LOG_INFO;
if (cfg_map_get(channel, "severity", &severity) == ISC_R_SUCCESS) {
if (cfg_obj_isstring(severity)) {
const char *str = cfg_obj_asstring(severity);
if (strcasecmp(str, "critical") == 0)
level = ISC_LOG_CRITICAL;
else if (strcasecmp(str, "error") == 0)
level = ISC_LOG_ERROR;
else if (strcasecmp(str, "warning") == 0)
level = ISC_LOG_WARNING;
else if (strcasecmp(str, "notice") == 0)
level = ISC_LOG_NOTICE;
else if (strcasecmp(str, "info") == 0)
level = ISC_LOG_INFO;
else if (strcasecmp(str, "dynamic") == 0)
level = ISC_LOG_DYNAMIC;
} else
/* debug */
level = cfg_obj_asuint32(severity);
}
result = isc_log_createchannel(lctx, channelname,
type, level, &dest, flags);
if (result == ISC_R_SUCCESS && type == ISC_LOG_TOFILE) {
FILE *fp;
/*
* Test to make sure that file is a plain file.
* Fix defect #22771
*/
result = isc_file_isplainfile(dest.file.name);
if (result == ISC_R_SUCCESS ||
result == ISC_R_FILENOTFOUND) {
/*
* Test that the file can be opened, since
* isc_log_open() can't effectively report
* failures when called in
* isc_log_doit().
*/
result = isc_stdio_open(dest.file.name, "a", &fp);
if (result != ISC_R_SUCCESS) {
syslog(LOG_ERR,
"isc_stdio_open '%s' failed: %s",
dest.file.name,
isc_result_totext(result));
fprintf(stderr,
"isc_stdio_open '%s' failed: %s",
dest.file.name,
isc_result_totext(result));
} else
(void)isc_stdio_close(fp);
} else {
syslog(LOG_ERR, "isc_file_isplainfile '%s' failed: %s",
dest.file.name, isc_result_totext(result));
fprintf(stderr, "isc_file_isplainfile '%s' failed: %s",
dest.file.name, isc_result_totext(result));
}
}
return (result);
}
isc_result_t
ns_log_configure(isc_logconfig_t *logconf, const cfg_obj_t *logstmt) {
isc_result_t result;
const cfg_obj_t *channels = NULL;
const cfg_obj_t *categories = NULL;
const cfg_listelt_t *element;
isc_boolean_t default_set = ISC_FALSE;
isc_boolean_t unmatched_set = ISC_FALSE;
const cfg_obj_t *catname;
CHECK(ns_log_setdefaultchannels(logconf));
(void)cfg_map_get(logstmt, "channel", &channels);
for (element = cfg_list_first(channels);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *channel = cfg_listelt_value(element);
CHECK(channel_fromconf(channel, logconf));
}
(void)cfg_map_get(logstmt, "category", &categories);
for (element = cfg_list_first(categories);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *category = cfg_listelt_value(element);
CHECK(category_fromconf(category, logconf));
if (!default_set) {
catname = cfg_tuple_get(category, "name");
if (strcmp(cfg_obj_asstring(catname), "default") == 0)
default_set = ISC_TRUE;
}
if (!unmatched_set) {
catname = cfg_tuple_get(category, "name");
if (strcmp(cfg_obj_asstring(catname), "unmatched") == 0)
unmatched_set = ISC_TRUE;
}
}
if (!default_set)
CHECK(ns_log_setdefaultcategory(logconf));
if (!unmatched_set)
CHECK(ns_log_setunmatchedcategory(logconf));
return (ISC_R_SUCCESS);
cleanup:
if (logconf != NULL)
isc_logconfig_destroy(&logconf);
return (result);
}
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