| /* |
| * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Description: Logging support for the conntrack daemon |
| */ |
| |
| #include "log.h" |
| #include "conntrackd.h" |
| |
| #include <time.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| |
| int init_log(void) |
| { |
| if (CONFIG(logfile)[0]) { |
| STATE(log) = fopen(CONFIG(logfile), "a+"); |
| if (STATE(log) == NULL) { |
| fprintf(stderr, "ERROR: can't open logfile `%s'." |
| "Reason: %s\n", CONFIG(logfile), |
| strerror(errno)); |
| return -1; |
| } |
| |
| setlinebuf(STATE(log)); |
| } |
| |
| if (CONFIG(stats).logfile[0]) { |
| STATE(stats_log) = fopen(CONFIG(stats).logfile, "a+"); |
| if (STATE(stats_log) == NULL) { |
| fprintf(stderr, "ERROR: can't open logfile `%s'." |
| "Reason: %s\n", CONFIG(stats).logfile, |
| strerror(errno)); |
| return -1; |
| } |
| |
| setlinebuf(STATE(stats_log)); |
| } |
| |
| if (CONFIG(syslog_facility) != -1 || |
| CONFIG(stats).syslog_facility != -1) |
| openlog(PACKAGE, LOG_PID, CONFIG(syslog_facility)); |
| |
| return 0; |
| } |
| |
| void dlog(int priority, const char *format, ...) |
| { |
| FILE *fd = STATE(log); |
| time_t t; |
| char *buf; |
| const char *prio; |
| va_list args; |
| |
| if (fd) { |
| t = time(NULL); |
| buf = ctime(&t); |
| buf[strlen(buf)-1]='\0'; |
| switch (priority) { |
| case LOG_INFO: |
| prio = "info"; |
| break; |
| case LOG_NOTICE: |
| prio = "notice"; |
| break; |
| case LOG_WARNING: |
| prio = "warning"; |
| break; |
| case LOG_ERR: |
| prio = "ERROR"; |
| break; |
| default: |
| prio = "?"; |
| break; |
| } |
| va_start(args, format); |
| fprintf(fd, "[%s] (pid=%d) [%s] ", buf, getpid(), prio); |
| vfprintf(fd, format, args); |
| va_end(args); |
| fprintf(fd, "\n"); |
| fflush(fd); |
| } |
| |
| if (CONFIG(syslog_facility) != -1) { |
| va_start(args, format); |
| vsyslog(priority, format, args); |
| va_end(args); |
| } |
| } |
| |
| void dlog_ct(FILE *fd, struct nf_conntrack *ct, unsigned int type) |
| { |
| time_t t; |
| char buf[1024]; |
| char *tmp; |
| unsigned int flags = 0; |
| |
| buf[0]='\0'; |
| |
| switch(type) { |
| case NFCT_O_PLAIN: |
| t = time(NULL); |
| ctime_r(&t, buf); |
| tmp = buf + strlen(buf); |
| buf[strlen(buf)-1]='\t'; |
| break; |
| case NFCT_O_XML: |
| tmp = buf; |
| flags |= NFCT_OF_TIME; |
| break; |
| default: |
| return; |
| } |
| nfct_snprintf(buf+strlen(buf), 1024-strlen(buf), ct, 0, type, flags); |
| |
| if (fd) { |
| snprintf(buf+strlen(buf), 1024-strlen(buf), "\n"); |
| fputs(buf, fd); |
| } |
| |
| if (fd == STATE(log)) { |
| /* error reporting */ |
| if (CONFIG(syslog_facility) != -1) |
| syslog(LOG_ERR, "%s", tmp); |
| } else if (fd == STATE(stats_log)) { |
| /* connection logging */ |
| if (CONFIG(stats).syslog_facility != -1) |
| syslog(LOG_INFO, "%s", tmp); |
| } |
| } |
| |
| void dlog_exp(FILE *fd, struct nf_expect *exp, unsigned int type) |
| { |
| time_t t; |
| char buf[1024]; |
| char *tmp; |
| unsigned int flags = 0; |
| |
| buf[0]='\0'; |
| |
| switch(type) { |
| case NFCT_O_PLAIN: |
| t = time(NULL); |
| ctime_r(&t, buf); |
| tmp = buf + strlen(buf); |
| buf[strlen(buf)-1]='\t'; |
| break; |
| default: |
| return; |
| } |
| nfexp_snprintf(buf+strlen(buf), 1024-strlen(buf), exp, 0, type, flags); |
| |
| if (fd) { |
| snprintf(buf+strlen(buf), 1024-strlen(buf), "\n"); |
| fputs(buf, fd); |
| } |
| |
| if (fd == STATE(log)) { |
| /* error reporting */ |
| if (CONFIG(syslog_facility) != -1) |
| syslog(LOG_ERR, "%s", tmp); |
| } else if (fd == STATE(stats_log)) { |
| /* connection logging */ |
| if (CONFIG(stats).syslog_facility != -1) |
| syslog(LOG_INFO, "%s", tmp); |
| } |
| } |
| |
| void close_log(void) |
| { |
| if (STATE(log) != NULL) |
| fclose(STATE(log)); |
| |
| if (STATE(stats_log) != NULL) |
| fclose(STATE(stats_log)); |
| |
| if (CONFIG(syslog_facility) != -1 || |
| CONFIG(stats).syslog_facility != -1) |
| closelog(); |
| } |