Keep log directory open, use mkdirat(2) and openat(2)
parent
21a9954e7c
commit
fece6e6eb6
7
chat.c
7
chat.c
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@ -144,6 +144,7 @@ int main(int argc, char *argv[]) {
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const char *cert = NULL;
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const char *priv = NULL;
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bool log = false;
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bool sasl = false;
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const char *pass = NULL;
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const char *nick = NULL;
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@ -212,7 +213,7 @@ int main(int argc, char *argv[]) {
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break; case 'i': filterAdd(Ice, optarg);
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break; case 'j': self.join = optarg;
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break; case 'k': priv = optarg;
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break; case 'l': logEnable = true;
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break; case 'l': log = true; logOpen();
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break; case 'm': self.mode = optarg;
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break; case 'n': nick = optarg;
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break; case 'o': insecure = true; printCert = true;
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@ -277,7 +278,7 @@ int main(int argc, char *argv[]) {
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}
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#ifdef __OpenBSD__
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if (self.restricted && logEnable) {
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if (self.restricted && log) {
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const char *logdir = dataMkdir("");
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int error = unveil(logdir, "wc");
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if (error) err(EX_OSERR, "unveil");
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@ -285,7 +286,7 @@ int main(int argc, char *argv[]) {
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char promises[64] = "stdio tty";
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char *ptr = &promises[strlen(promises)], *end = &promises[sizeof(promises)];
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if (logEnable) ptr = seprintf(ptr, end, " wpath cpath");
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if (log) ptr = seprintf(ptr, end, " wpath cpath");
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if (!self.restricted) ptr = seprintf(ptr, end, " proc exec");
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char *promisesInitial = ptr;
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2
chat.h
2
chat.h
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@ -394,7 +394,7 @@ struct Filter filterAdd(enum Heat heat, const char *pattern);
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bool filterRemove(struct Filter filter);
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enum Heat filterCheck(enum Heat heat, uint id, const struct Message *msg);
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extern bool logEnable;
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void logOpen(void);
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void logFormat(uint id, const time_t *time, const char *format, ...)
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__attribute__((format(printf, 3, 4)));
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void logClose(void);
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45
log.c
45
log.c
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@ -27,16 +27,32 @@
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#include <assert.h>
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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 <limits.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.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 <unistd.h>
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#include "chat.h"
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bool logEnable;
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static int logDir = -1;
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void logOpen(void) {
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dataMkdir("");
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const char *path = dataMkdir("log");
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logDir = open(path, O_RDONLY | O_CLOEXEC);
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if (logDir < 0) err(EX_CANTCREAT, "%s", path);
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}
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static void logMkdir(const char *path) {
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int error = mkdirat(logDir, path, S_IRWXU);
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if (error && errno != EEXIST) err(EX_CANTCREAT, "log/%s", path);
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}
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static struct {
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int year;
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@ -62,44 +78,47 @@ static FILE *logFile(uint id, const struct tm *tm) {
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logs[id].month = tm->tm_mon;
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logs[id].day = tm->tm_mday;
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char path[PATH_MAX] = "log";
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size_t len = strlen(path);
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dataMkdir("");
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dataMkdir(path);
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path[len++] = '/';
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size_t len = 0;
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char path[PATH_MAX];
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for (const char *ch = network.name; *ch; ++ch) {
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path[len++] = (*ch == '/' ? '_' : *ch);
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}
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path[len] = '\0';
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dataMkdir(path);
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logMkdir(path);
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path[len++] = '/';
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for (const char *ch = idNames[id]; *ch; ++ch) {
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path[len++] = (*ch == '/' ? '_' : *ch);
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}
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path[len] = '\0';
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dataMkdir(path);
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logMkdir(path);
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strftime(&path[len], sizeof(path) - len, "/%F.log", tm);
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logs[id].file = dataOpen(path, "ae");
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if (!logs[id].file) exit(EX_CANTCREAT);
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int fd = openat(
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logDir, path,
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O_WRONLY | O_APPEND | O_CREAT | O_CLOEXEC,
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S_IRUSR | S_IWUSR
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);
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if (fd < 0) err(EX_CANTCREAT, "log/%s", path);
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logs[id].file = fdopen(fd, "a");
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if (!logs[id].file) err(EX_OSERR, "fdopen");
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setlinebuf(logs[id].file);
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return logs[id].file;
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}
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void logClose(void) {
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if (!logEnable) return;
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if (logDir < 0) return;
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for (uint id = 0; id < IDCap; ++id) {
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if (!logs[id].file) continue;
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int error = fclose(logs[id].file);
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if (error) err(EX_IOERR, "%s", idNames[id]);
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}
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close(logDir);
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}
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void logFormat(uint id, const time_t *src, const char *format, ...) {
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if (!logEnable) return;
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if (logDir < 0) return;
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time_t ts = (src ? *src : time(NULL));
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struct tm *tm = localtime(&ts);
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