diff options
Diffstat (limited to 'src/log.c')
| -rw-r--r-- | src/log.c | 457 |
1 files changed, 0 insertions, 457 deletions
diff --git a/src/log.c b/src/log.c deleted file mode 100644 index 401ab50d..00000000 --- a/src/log.c +++ /dev/null @@ -1,457 +0,0 @@ -/* - * make sure _GNU_SOURCE is defined - */ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif - -#include <sys/types.h> - -#include <errno.h> -#include <fcntl.h> -#include <time.h> -#include <string.h> -#include <stdlib.h> - -#include <stdarg.h> -#include <stdio.h> - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#ifdef _WIN32 -#undef HAVE_SYSLOG_H -#endif - -#ifdef HAVE_SYSLOG_H -#include <syslog.h> -#endif - -#include "log.h" -#include "array.h" - -#include "sys-files.h" - -#ifdef _WIN32 -#define STDERR_FILENO 2 -#endif - -#ifndef O_LARGEFILE -# define O_LARGEFILE 0 -#endif - -/* Close fd and _try_ to get a /dev/null for it instead. - * close() alone may trigger some bugs when a - * process opens another file and gets fd = STDOUT_FILENO or STDERR_FILENO - * and later tries to just print on stdout/stderr - * - * Returns 0 on success and -1 on failure (fd gets closed in all cases) - */ -int openDevNull(int fd) { - int tmpfd; - close(fd); -#if defined(__WIN32) - /* Cygwin should work with /dev/null */ - tmpfd = open("nul", O_RDWR); -#else - tmpfd = open("/dev/null", O_RDWR); -#endif - if (tmpfd != -1 && tmpfd != fd) { - dup2(tmpfd, fd); - close(tmpfd); - } - return (tmpfd != -1) ? 0 : -1; -} - -/** - * open the errorlog - * - * we have 3 possibilities: - * - stderr (default) - * - syslog - * - logfile - * - * if the open failed, report to the user and die - * - */ - - -typedef struct { - buffer *file; - unsigned short use_syslog; - - /* the errorlog */ - int fd; - enum { ERRORLOG_FILE, ERRORLOG_FD, ERRORLOG_SYSLOG } mode; - buffer *buf; - - time_t cached_ts; - buffer *cached_ts_str; -} errorlog; - -errorlog *myconfig = NULL; - -void log_init(void) { - /* use syslog */ - errorlog *err; - - err = calloc(1, sizeof(*err)); - - err->fd = STDERR_FILENO; - err->mode = ERRORLOG_FD; - err->buf = buffer_init(); - err->cached_ts_str = buffer_init(); - - myconfig = err; -} - -void log_free(void) { - errorlog *err = myconfig; - - if (!err) return; - - switch(err->mode) { - case ERRORLOG_FILE: - case ERRORLOG_FD: - if (-1 != err->fd) { - if (STDERR_FILENO != err->fd) - close(err->fd); - err->fd = -1; - } - break; - case ERRORLOG_SYSLOG: -#ifdef HAVE_SYSLOG_H - closelog(); -#endif - break; - } - - buffer_free(err->buf); - buffer_free(err->cached_ts_str); - - free(err); - - myconfig = NULL; -} - -int log_error_open(buffer *file, buffer *breakage_file, int use_syslog, int dont_daemonize) { - errorlog *err = myconfig; - -#ifdef HAVE_SYSLOG_H - /* perhaps someone wants to use syslog() */ - openlog("lighttpd", LOG_CONS | LOG_PID, LOG_DAEMON); -#endif - err->mode = ERRORLOG_FD; - err->fd = STDERR_FILENO; - - if (use_syslog) { - err->mode = ERRORLOG_SYSLOG; - } else if (!buffer_is_empty(file)) { - if (-1 == (err->fd = open(file->ptr, O_APPEND | O_WRONLY | O_CREAT | O_LARGEFILE, 0644))) { - log_error_write(NULL, __FILE__, __LINE__, "SBSS", - "opening errorlog '", file, - "' failed: ", strerror(errno)); - - return -1; - } -#ifdef FD_CLOEXEC - /* close fd on exec (cgi) */ - fcntl(err->fd, F_SETFD, FD_CLOEXEC); -#endif - err->mode = ERRORLOG_FILE; - err->file = file; - } - - TRACE("%s", "server started"); - - if (err->mode == ERRORLOG_FD && !dont_daemonize) { - /* We can only log to stderr in dont-daemonize mode */ - err->fd = -1; - } - - if (!buffer_is_empty(breakage_file)) { - int breakage_fd; - - if (err->mode == ERRORLOG_FD) { - err->fd = dup(STDERR_FILENO); -#ifdef FD_CLOEXEC - fcntl(err->fd, F_SETFD, FD_CLOEXEC); -#endif - } - - if (-1 == (breakage_fd = open(breakage_file->ptr, O_APPEND | O_WRONLY | O_CREAT | O_LARGEFILE, 0644))) { - log_error_write(NULL, __FILE__, __LINE__, "SBSS", - "opening breakagelog '", breakage_file, - "' failed: ", strerror(errno)); - - return -1; - } - - if (STDERR_FILENO != breakage_fd) { - dup2(breakage_fd, STDERR_FILENO); - close(breakage_fd); - } - } else if (!dont_daemonize) { - /* move stderr to /dev/null */ - openDevNull(STDERR_FILENO); - } - - - return 0; -} - -/** - * open the errorlog - * - * if the open failed, report to the user and die - * if no filename is given, use syslog instead - * - */ - -int log_error_cycle(void) { - /* only cycle if we are not in syslog-mode */ - - errorlog *err = myconfig; - - if (err->mode == ERRORLOG_FILE) { - buffer *file = err->file; - /* already check of opening time */ - - int new_fd; - - if (-1 == (new_fd = open(file->ptr, O_APPEND | O_WRONLY | O_CREAT | O_LARGEFILE, 0644))) { - /* write to old log */ - log_error_write(NULL, __FILE__, __LINE__, "SBSSS", - "cycling errorlog '", file, - "' failed: ", strerror(errno), - ", falling back to syslog()"); - - close(err->fd); - err->fd = -1; -#ifdef HAVE_SYSLOG_H - err->mode = ERRORLOG_SYSLOG; -#endif - } else { - /* ok, new log is open, close the old one */ - close(err->fd); - err->fd = new_fd; - } - } - - return 0; -} - -int log_error_write(void *srv, const char *filename, unsigned int line, const char *fmt, ...) { - va_list ap; - time_t t; - - errorlog *err = myconfig; - - UNUSED(srv); - - switch(err->mode) { - case ERRORLOG_FILE: - case ERRORLOG_FD: - if (-1 == err->fd) return 0; - /* cache the generated timestamp */ - t = time(NULL); - - if (t != err->cached_ts) { - buffer_prepare_copy(err->cached_ts_str, 255); - strftime(err->cached_ts_str->ptr, err->cached_ts_str->size - 1, "%Y-%m-%d %H:%M:%S", localtime(&(t))); - err->cached_ts_str->used = strlen(err->cached_ts_str->ptr) + 1; - err->cached_ts = t; - } - - buffer_copy_string_buffer(err->buf, err->cached_ts_str); - buffer_append_string_len(err->buf, CONST_STR_LEN(" (")); - break; - case ERRORLOG_SYSLOG: - /* syslog is generating its own timestamps */ - buffer_copy_string_len(err->buf, CONST_STR_LEN("(")); - break; - } - - buffer_append_string(err->buf, REMOVE_PATH(filename)); - buffer_append_string_len(err->buf, CONST_STR_LEN(":")); - buffer_append_long(err->buf, line); - buffer_append_string_len(err->buf, CONST_STR_LEN(") ")); - - for(va_start(ap, fmt); *fmt; fmt++) { - int d; - char *s; - buffer *b; - off_t o; - - switch(*fmt) { - case 's': /* string */ - s = va_arg(ap, char *); - buffer_append_string(err->buf, s); - buffer_append_string_len(err->buf, CONST_STR_LEN(" ")); - break; - case 'b': /* buffer */ - b = va_arg(ap, buffer *); - buffer_append_string_buffer(err->buf, b); - buffer_append_string_len(err->buf, CONST_STR_LEN(" ")); - break; - case 'd': /* int */ - d = va_arg(ap, int); - buffer_append_long(err->buf, d); - buffer_append_string_len(err->buf, CONST_STR_LEN(" ")); - break; - case 'o': /* off_t */ - o = va_arg(ap, off_t); - buffer_append_off_t(err->buf, o); - buffer_append_string_len(err->buf, CONST_STR_LEN(" ")); - break; - case 'x': /* int (hex) */ - d = va_arg(ap, int); - buffer_append_string_len(err->buf, CONST_STR_LEN("0x")); - buffer_append_long_hex(err->buf, d); - buffer_append_string_len(err->buf, CONST_STR_LEN(" ")); - break; - case 'S': /* string */ - s = va_arg(ap, char *); - buffer_append_string(err->buf, s); - break; - case 'B': /* buffer */ - b = va_arg(ap, buffer *); - buffer_append_string_buffer(err->buf, b); - break; - case 'D': /* int */ - d = va_arg(ap, int); - buffer_append_long(err->buf, d); - break; - case '(': - case ')': - case '<': - case '>': - case ',': - case ' ': - buffer_append_string_len(err->buf, fmt, 1); - break; - } - } - va_end(ap); - - switch(err->mode) { - case ERRORLOG_FILE: - case ERRORLOG_FD: - buffer_append_string_len(err->buf, CONST_STR_LEN("\n")); - write(err->fd, err->buf->ptr, err->buf->used - 1); - break; -#ifdef HAVE_SYSLOG_H - case ERRORLOG_SYSLOG: - syslog(LOG_ERR, "%s", err->buf->ptr); - break; -#endif - } - - return 0; -} - -int log_trace(const char *fmt, ...) { - buffer *b; - int l, tries = 0; - errorlog *err = myconfig; - va_list ap; - time_t t; - int timestrsize = 0; - - b = buffer_init(); - buffer_prepare_copy(b, 4096); - - switch(err->mode) { - case ERRORLOG_FILE: - case ERRORLOG_FD: - if (-1 == err->fd) return 0; - /* cache the generated timestamp */ - t = time(NULL); - - if (t != err->cached_ts) { - buffer_prepare_copy(err->cached_ts_str, 255); - strftime(err->cached_ts_str->ptr, err->cached_ts_str->size - 1, "%Y-%m-%d %H:%M:%S", localtime(&(t))); - err->cached_ts_str->used = strlen(err->cached_ts_str->ptr) + 1; - err->cached_ts = t; - } - - buffer_copy_string_buffer(b, err->cached_ts_str); - buffer_append_string_len(b, CONST_STR_LEN(" ")); - timestrsize = b->used - 1; - break; - case ERRORLOG_SYSLOG: - /* syslog is generating its own timestamps */ - buffer_copy_string_len(b, CONST_STR_LEN("")); - timestrsize = b->used - 1; - break; - } - - do { - errno = 0; - va_start(ap, fmt); - l = vsnprintf(b->ptr+timestrsize, b->size-timestrsize, fmt, ap); - va_end(ap); - - /* if 'l' is between -1 and size we are good, - * otherwise we have to resize to size - */ - - if (l > -1 && ((unsigned int) l) < (b->size-timestrsize)) { - b->used += l; - - break; - } - - if (l > -1) { - /* C99: l is the mem-size we need */ - buffer_prepare_append(b, l + 1); /* allocate a bit more than we need */ - } else if (tries++ >= 3) { - int e = errno; - /* glibc 2.0.6 and earlier return -1 if the output was truncated - * so we try to increase the buffer size 3 times - so you cannot - * print error messages longer than 8 * 4096 = 32k with glib <= 2.0.6 - */ - buffer_copy_string_len(b, CONST_STR_LEN("log_trace: vsnprintf error: l = ")); - buffer_append_long(b, l); - if (e) { - buffer_append_string_len(b, CONST_STR_LEN(", errno = ")); - buffer_append_long(b, errno); - buffer_append_string_len(b, CONST_STR_LEN(": ")); - buffer_append_string(b, strerror(e)); - } - break; - } else { - buffer_prepare_append(b, 2*b->size); - } - } while(1); - - /* write b */ - switch(err->mode) { - case ERRORLOG_FILE: - case ERRORLOG_FD: - buffer_append_string_len(b, CONST_STR_LEN("\n")); - write(err->fd, b->ptr, b->used - 1); - break; -#ifdef HAVE_SYSLOG_H - case ERRORLOG_SYSLOG: - syslog(LOG_ERR, "%s", b->ptr); - break; -#endif - } - - buffer_free(b); - - return 0; -} - -#if REMOVE_PATH_FROM_FILE -const char *remove_path(const char *path) { - char *p = strrchr(path, DIR_SEPERATOR); - if (NULL != p && *(p) != '\0') { - return (p + 1); - } - return path; -} -#endif - |