146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sysexits.h>
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#include <time.h>
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#include "chat.h"
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static int logRoot = -1;
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static struct Log {
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int dir;
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int year;
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int month;
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int day;
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FILE *file;
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} logs[TagsLen];
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void logOpen(const char *path) {
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logRoot = open(path, O_RDONLY | O_CLOEXEC);
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if (logRoot < 0) err(EX_CANTCREAT, "%s", path);
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}
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static void sanitize(char *name) {
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for (; name[0]; ++name) {
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if (name[0] == '/') name[0] = '_';
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}
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}
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static FILE *logFile(struct Tag tag, const struct tm *time) {
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struct Log *log = &logs[tag.id];
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if (
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log->file
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&& log->year == time->tm_year
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&& log->month == time->tm_mon
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&& log->day == time->tm_mday
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) return log->file;
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if (log->file) {
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fclose(log->file);
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} else {
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char *name = strdup(tag.name);
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if (!name) err(EX_OSERR, "strdup");
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sanitize(name);
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int error = mkdirat(logRoot, name, 0700);
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if (error && errno != EEXIST) err(EX_CANTCREAT, "%s", name);
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log->dir = openat(logRoot, name, O_RDONLY | O_CLOEXEC);
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if (log->dir < 0) err(EX_CANTCREAT, "%s", name);
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free(name);
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}
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log->year = time->tm_year;
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log->month = time->tm_mon;
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log->day = time->tm_mday;
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char path[sizeof("YYYY-MM-DD.log")];
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strftime(path, sizeof(path), "%F.log", time);
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int fd = openat(
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log->dir, path, O_RDWR | O_APPEND | O_CREAT | O_CLOEXEC, 0600
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);
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if (fd < 0) err(EX_CANTCREAT, "%s/%s", tag.name, path);
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log->file = fdopen(fd, "a+");
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if (!log->file) err(EX_CANTCREAT, "%s/%s", tag.name, path);
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setlinebuf(log->file);
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return log->file;
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}
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enum { StampLen = sizeof("YYYY-MM-DDThh:mm:ss+hhmm") - 1 };
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void logFmt(struct Tag tag, const time_t *ts, const char *format, ...) {
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if (logRoot < 0) return;
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time_t t;
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if (!ts) {
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t = time(NULL);
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ts = &t;
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}
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struct tm *time = localtime(ts);
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if (!time) err(EX_SOFTWARE, "localtime");
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FILE *file = logFile(tag, time);
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char stamp[StampLen + 1];
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strftime(stamp, sizeof(stamp), "%FT%T%z", time);
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fprintf(file, "[%s] ", stamp);
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if (ferror(file)) err(EX_IOERR, "%s", tag.name);
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va_list ap;
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va_start(ap, format);
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vfprintf(file, format, ap);
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va_end(ap);
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if (ferror(file)) err(EX_IOERR, "%s", tag.name);
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fprintf(file, "\n");
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if (ferror(file)) err(EX_IOERR, "%s", tag.name);
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}
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void logReplay(struct Tag tag) {
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if (logRoot < 0) return;
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time_t t = time(NULL);
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struct tm *time = localtime(&t);
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if (!time) err(EX_SOFTWARE, "localtime");
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FILE *file = logFile(tag, time);
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rewind(file);
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char *line = NULL;
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size_t cap = 0;
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ssize_t len;
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while (0 < (len = getline(&line, &cap, file))) {
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if (len < 1 + StampLen + 2 + 1) continue;
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line[len - 1] = '\0';
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uiFmt(tag, UICold, "\3%d%s", IRCGray, &line[1 + StampLen + 2]);
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}
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if (ferror(file)) err(EX_IOERR, "%s", tag.name);
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free(line);
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}
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