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/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sysexits.h>
#include <time.h>
#include "chat.h"
static int logRoot = -1;
static struct Log {
int dir;
int year;
int month;
int day;
FILE *file;
} logs[TAGS_LEN];
void logOpen(const char *path) {
logRoot = open(path, O_RDONLY | O_CLOEXEC);
if (logRoot < 0) err(EX_CANTCREAT, "%s", path);
}
static void sanitize(char *name) {
for (; name[0]; ++name) {
if (name[0] == '/') name[0] = '_';
}
}
static FILE *logFile(struct Tag tag, const struct tm *time) {
struct Log *log = &logs[tag.id];
if (
log->file
&& log->year == time->tm_year
&& log->month == time->tm_mon
&& log->day == time->tm_mday
) return log->file;
if (log->file) {
fclose(log->file);
} else {
char *name = strdup(tag.name);
if (!name) err(EX_OSERR, "strdup");
sanitize(name);
int error = mkdirat(logRoot, name, 0700);
if (error && errno != EEXIST) err(EX_CANTCREAT, "%s", name);
log->dir = openat(logRoot, name, O_RDONLY | O_CLOEXEC);
if (log->dir < 0) err(EX_CANTCREAT, "%s", name);
free(name);
}
log->year = time->tm_year;
log->month = time->tm_mon;
log->day = time->tm_mday;
char path[sizeof("YYYY-MM-DD.log")];
strftime(path, sizeof(path), "%F.log", time);
int fd = openat(
log->dir, path, O_WRONLY | O_APPEND | O_CREAT | O_CLOEXEC, 0600
);
if (fd < 0) err(EX_CANTCREAT, "%s/%s", tag.name, path);
log->file = fdopen(fd, "a");
if (!log->file) err(EX_CANTCREAT, "%s/%s", tag.name, path);
setlinebuf(log->file);
return log->file;
}
void logFmt(struct Tag tag, const time_t *ts, const char *format, ...) {
if (logRoot < 0) return;
time_t t;
if (!ts) {
t = time(NULL);
ts = &t;
}
struct tm *time = localtime(ts);
if (!time) err(EX_SOFTWARE, "localtime");
FILE *file = logFile(tag, time);
char stamp[sizeof("YYYY-MM-DDThh:mm:ss+hhmm")];
strftime(stamp, sizeof(stamp), "%FT%T%z", time);
fprintf(file, "[%s] ", stamp);
if (ferror(file)) err(EX_IOERR, "%s", tag.name);
va_list ap;
va_start(ap, format);
vfprintf(file, format, ap);
va_end(ap);
if (ferror(file)) err(EX_IOERR, "%s", tag.name);
fprintf(file, "\n");
if (ferror(file)) err(EX_IOERR, "%s", tag.name);
}
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