aboutsummaryrefslogtreecommitdiff
path: root/syslogd/logfile.c
diff options
context:
space:
mode:
Diffstat (limited to 'syslogd/logfile.c')
-rw-r--r--syslogd/logfile.c284
1 files changed, 0 insertions, 284 deletions
diff --git a/syslogd/logfile.c b/syslogd/logfile.c
deleted file mode 100644
index 62e58f4..0000000
--- a/syslogd/logfile.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * Copyright (C) 2018 - David Oberhollenzer
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
- */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include "syslogd.h"
-#include "util.h"
-
-
-static const enum_map_t levels[] = {
- { "emergency", 0 },
- { "alert", 1 },
- { "critical", 2 },
- { "error", 3 },
- { "warning", 4 },
- { "notice", 5 },
- { "info", 6 },
- { "debug", 7 },
- { NULL, 0 },
-};
-
-static const enum_map_t facilities[] = {
- { "kernel", 0 },
- { "user", 1 },
- { "mail", 2 },
- { "daemon", 3 },
- { "auth", 4 },
- { "syslog", 5 },
- { "lpr", 6 },
- { "news", 7 },
- { "uucp", 8 },
- { "clock", 9 },
- { "authpriv", 10 },
- { "ftp", 11 },
- { "ntp", 12 },
- { "audit", 13 },
- { "alert", 14 },
- { "cron", 15 },
- { "local0", 16 },
- { "local1", 17 },
- { "local2", 18 },
- { "local3", 19 },
- { "local4", 20 },
- { "local5", 21 },
- { "local6", 22 },
- { "local7", 23 },
- { NULL, 0 },
-};
-
-
-typedef struct logfile_t {
- struct logfile_t *next;
- size_t size;
- int fd;
- char filename[];
-} logfile_t;
-
-
-typedef struct {
- log_backend_t base;
- logfile_t *list;
- size_t maxsize;
- int flags;
-} log_backend_file_t;
-
-
-static int logfile_open(logfile_t *file)
-{
- struct stat sb;
-
- file->fd = open(file->filename, O_WRONLY | O_CREAT, 0640);
- if (file->fd < 0) {
- perror(file->filename);
- return -1;
- }
-
- if (lseek(file->fd, 0, SEEK_END))
- goto fail;
-
- if (fstat(file->fd, &sb))
- goto fail;
-
- file->size = sb.st_size;
- return 0;
-fail:
- perror(file->filename);
- close(file->fd);
- file->fd = -1;
- return -1;
-}
-
-static logfile_t *logfile_create(const char *filename)
-{
- logfile_t *file = calloc(1, sizeof(*file) + strlen(filename) + 1);
-
- if (file == NULL) {
- perror("calloc");
- return NULL;
- }
-
- strcpy(file->filename, filename);
-
- if (logfile_open(file)) {
- free(file);
- return NULL;
- }
-
- return file;
-}
-
-static int logfile_write(logfile_t *file, const syslog_msg_t *msg)
-{
- const char *lvl_str, *fac_name;
- char timebuf[32];
- struct tm tm;
- int ret;
-
- if (file->fd < 0 && logfile_open(file) != 0)
- return -1;
-
- lvl_str = enum_to_name(levels, msg->level);
- if (lvl_str == NULL)
- return -1;
-
- gmtime_r(&msg->timestamp, &tm);
- strftime(timebuf, sizeof(timebuf), "%FT%T", &tm);
-
- if (msg->ident != NULL) {
- fac_name = enum_to_name(facilities, msg->facility);
- if (fac_name == NULL)
- return -1;
-
- ret = dprintf(file->fd, "[%s][%s][%s][%u] %s\n", timebuf,
- fac_name, lvl_str, msg->pid, msg->message);
- } else {
- ret = dprintf(file->fd, "[%s][%s][%u] %s\n", timebuf, lvl_str,
- msg->pid, msg->message);
- }
-
- fsync(file->fd);
-
- if (ret > 0)
- file->size += ret;
- return 0;
-}
-
-static int logfile_rotate(logfile_t *f, int flags)
-{
- char timebuf[32];
- char *filename;
- struct tm tm;
- time_t now;
-
- if (flags & LOG_ROTATE_OVERWRITE) {
- strcpy(timebuf, "1");
- } else {
- now = time(NULL);
- gmtime_r(&now, &tm);
- strftime(timebuf, sizeof(timebuf), "%FT%T", &tm);
- }
-
- filename = alloca(strlen(f->filename) + strlen(timebuf) + 2);
- sprintf(filename, "%s.%s", f->filename, timebuf);
-
- if (rename(f->filename, filename)) {
- perror(filename);
- return -1;
- }
-
- close(f->fd);
- logfile_open(f);
- return 0;
-}
-
-/*****************************************************************************/
-
-static int file_backend_init(log_backend_t *backend, int flags,
- size_t sizelimit)
-{
- log_backend_file_t *log = (log_backend_file_t *)backend;
-
- log->flags = flags;
- log->maxsize = sizelimit;
- return 0;
-}
-
-static void file_backend_cleanup(log_backend_t *backend)
-{
- log_backend_file_t *log = (log_backend_file_t *)backend;
- logfile_t *f;
-
- while (log->list != NULL) {
- f = log->list;
- log->list = f->next;
-
- close(f->fd);
- free(f);
- }
-}
-
-static int file_backend_write(log_backend_t *backend, const syslog_msg_t *msg)
-{
- log_backend_file_t *log = (log_backend_file_t *)backend;
- const char *ident;
- char *filename;
- logfile_t *f;
- size_t len;
-
- if (msg->ident != NULL) {
- ident = msg->ident;
- } else {
- ident = enum_to_name(facilities, msg->facility);
- if (ident == NULL)
- return -1;
- }
-
- len = strlen(ident) + strlen(".log") + 1;
- filename = alloca(len);
- strcpy(filename, ident);
- strcat(filename, ".log");
-
- for (f = log->list; f != NULL; f = f->next) {
- if (strcmp(filename, f->filename) == 0)
- break;
- }
-
- if (f == NULL) {
- f = logfile_create(filename);
- if (f == NULL)
- return -1;
- f->next = log->list;
- log->list = f;
- }
-
- if (logfile_write(f, msg))
- return -1;
-
- if ((log->flags & LOG_ROTATE_SIZE_LIMIT) && f->size >= log->maxsize)
- logfile_rotate(f, log->flags);
-
- return 0;
-}
-
-static void file_backend_rotate(log_backend_t *backend)
-{
- log_backend_file_t *log = (log_backend_file_t *)backend;
- logfile_t *f;
-
- for (f = log->list; f != NULL; f = f->next)
- logfile_rotate(f, log->flags);
-}
-
-log_backend_file_t filebackend = {
- .base = {
- .init = file_backend_init,
- .cleanup = file_backend_cleanup,
- .write = file_backend_write,
- .rotate = file_backend_rotate,
- },
- .list = NULL,
-};
-
-log_backend_t *logmgr = (log_backend_t *)&filebackend;