diff options
Diffstat (limited to 'log.c')
-rw-r--r-- | log.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/log.c b/log.c new file mode 100644 index 0000000..7f99ec4 --- /dev/null +++ b/log.c @@ -0,0 +1,112 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * 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 <assert.h> +#include <err.h> +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> +#include <time.h> + +#include "chat.h" + +bool logEnable; + +static struct { + int year; + int month; + int day; + FILE *file; +} logs[IDCap]; + +static FILE *logFile(uint id, const struct tm *tm) { + if ( + logs[id].file && + logs[id].year == tm->tm_year && + logs[id].month == tm->tm_mon && + logs[id].day == tm->tm_mday + ) return logs[id].file; + + if (logs[id].file) { + int error = fclose(logs[id].file); + if (error) err(EX_IOERR, "%s", idNames[id]); + } + + logs[id].year = tm->tm_year; + logs[id].month = tm->tm_mon; + logs[id].day = tm->tm_mday; + + char path[PATH_MAX] = "log"; + size_t len = strlen(path); + dataMkdir(""); + dataMkdir(path); + + path[len++] = '/'; + for (const char *ch = network.name; *ch; ++ch) { + path[len++] = (*ch == '/' ? '_' : *ch); + } + path[len] = '\0'; + dataMkdir(path); + + path[len++] = '/'; + for (const char *ch = idNames[id]; *ch; ++ch) { + path[len++] = (*ch == '/' ? '_' : *ch); + } + path[len] = '\0'; + dataMkdir(path); + + strftime(&path[len], sizeof(path) - len, "/%F.log", tm); + logs[id].file = dataOpen(path, "a"); + if (!logs[id].file) exit(EX_CANTCREAT); + + setlinebuf(logs[id].file); + return logs[id].file; +} + +void logClose(void) { + if (!logEnable) return; + for (uint id = 0; id < IDCap; ++id) { + if (!logs[id].file) continue; + int error = fclose(logs[id].file); + if (error) err(EX_IOERR, "%s", idNames[id]); + } +} + +void logFormat(uint id, const time_t *src, const char *format, ...) { + if (!logEnable) return; + + time_t ts = (src ? *src : time(NULL)); + struct tm *tm = localtime(&ts); + if (!tm) err(EX_OSERR, "localtime"); + + FILE *file = logFile(id, tm); + + char buf[sizeof("0000-00-00T00:00:00+0000")]; + strftime(buf, sizeof(buf), "%FT%T%z", tm); + fprintf(file, "[%s] ", buf); + if (ferror(file)) err(EX_IOERR, "%s", idNames[id]); + + va_list ap; + va_start(ap, format); + vfprintf(file, format, ap); + va_end(ap); + if (ferror(file)) err(EX_IOERR, "%s", idNames[id]); + + fprintf(file, "\n"); + if (ferror(file)) err(EX_IOERR, "%s", idNames[id]); +} |