diff options
| -rw-r--r-- | log.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/log.c b/log.c index 32d771f..d2f937f 100644 --- a/log.c +++ b/log.c @@ -73,6 +73,15 @@ static void logMkdir(const char *path) { if (error && errno != EEXIST) err(EX_CANTCREAT, "log/%s", path); } +static void sanitize(char *ptr, char *end) { + for (char *ch = ptr; ch < end && *ch == '.'; ++ch) { + *ch = '_'; + } + for (char *ch = ptr; ch < end; ++ch) { + if (*ch == '/') *ch = '_'; + } +} + static struct { int year; int month; @@ -97,22 +106,21 @@ static FILE *logFile(uint id, const struct tm *tm) { logs[id].month = tm->tm_mon; logs[id].day = tm->tm_mday; - size_t len = 0; char path[PATH_MAX]; - for (const char *ch = network.name; *ch; ++ch) { - path[len++] = (*ch == '/' ? '_' : *ch); - } - path[len] = '\0'; + char *ptr = path, *end = &path[sizeof(path)]; + + ptr = seprintf(ptr, end, "%s", network.name); + sanitize(path, ptr); logMkdir(path); - path[len++] = '/'; - for (const char *ch = idNames[id]; *ch; ++ch) { - path[len++] = (*ch == '/' ? '_' : *ch); - } - path[len] = '\0'; + char *name = ptr; + ptr = seprintf(ptr, end, "/%s", idNames[id]); + sanitize(&name[1], ptr); logMkdir(path); - strftime(&path[len], sizeof(path) - len, "/%F.log", tm); + size_t len = strftime(ptr, end - ptr, "/%F.log", tm); + if (!len) errx(EX_CANTCREAT, "log path too long"); + int fd = openat( logDir, path, O_WRONLY | O_APPEND | O_CREAT | O_CLOEXEC, |