/*
logger.c -- logging code
- Copyright (C) 2004-2017 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2004-2022 Guus Sliepen <guus@tinc-vpn.org>
2004-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
#include "control_common.h"
#include "process.h"
#include "sptps.h"
-#include "compression.h"
+#include "console.h"
debug_t debug_level = DEBUG_NOTHING;
static logmode_t logmode = LOGMODE_STDERR;
static pid_t logpid;
static FILE *logfile = NULL;
-#ifdef HAVE_MINGW
+#ifdef HAVE_WINDOWS
static HANDLE loghandle = NULL;
#endif
static const char *logident = NULL;
+static bool colorize_stderr = false;
bool logcontrol = false; // controlled by REQ_LOG <level>
int umbilical = 0;
+bool umbilical_colorize = false;
+
+#define SGR(s) ("\x1b[" s "m")
+
+typedef enum color_t {
+ RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, GRAY,
+ RESET, // not really a color
+} color_t;
+
+typedef struct priority_disp_t {
+ const char *name;
+ color_t color;
+} priority_disp_t;
+
+static const priority_disp_t priorities[] = {
+ [LOG_EMERG] = {"EMERGENCY", MAGENTA},
+ [LOG_ALERT] = {"ALERT", MAGENTA},
+ [LOG_CRIT] = {"CRITICAL", MAGENTA},
+ [LOG_ERR] = {"ERROR", RED},
+ [LOG_WARNING] = {"WARNING", YELLOW},
+ [LOG_NOTICE] = {"NOTICE", CYAN},
+ [LOG_INFO] = {"INFO", GREEN},
+ [LOG_DEBUG] = {"DEBUG", BLUE},
+};
+
+static const char *ansi_codes[] = {
+ [RED] = SGR("31;1"),
+ [GREEN] = SGR("32;1"),
+ [YELLOW] = SGR("33;1"),
+ [BLUE] = SGR("34;1"),
+ [MAGENTA] = SGR("35;1"),
+ [CYAN] = SGR("36;1"),
+ [WHITE] = SGR("37;1"),
+ [GRAY] = SGR("90"),
+ [RESET] = SGR("0"),
+};
+
+static priority_disp_t get_priority(int priority) {
+ static const priority_disp_t unknown = {"UNKNOWN", WHITE};
+
+ if(priority >= LOG_EMERG && priority <= LOG_DEBUG) {
+ return priorities[priority];
+ } else {
+ return unknown;
+ }
+}
+
+// Formats current time to the second.
+// Reuses result so repeated calls within the same second are more efficient.
+static const char *current_time_str(void) {
+ static char timestr[sizeof("2000-12-31 12:34:56")] = "";
+ static time_t last_time = 0;
+
+ if(!now.tv_sec) {
+ gettimeofday(&now, NULL);
+ }
+
+ time_t now_sec = now.tv_sec;
+
+ if(!*timestr || now_sec != last_time) {
+ last_time = now_sec;
+ strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&now_sec));
+ }
+
+ return timestr;
+}
+
+// Format log entry with time, log level, and (possibly) colors, remembering if it was colorized.
+// Returns true if buffer has been changed.
+static bool format_pretty(char *buf, size_t buflen, int prio, const char *message, bool colorize, bool *colorized) {
+ // If we already wrote to buffer, and its colorization matches, we're done here
+ if(*buf && colorize == *colorized) {
+ return false;
+ }
+
+ // Otherwise, remember current colorization for future comparisons
+ *colorized = colorize;
+
+ priority_disp_t priority = get_priority(prio);
+ const char *color = "", *reset = "", *timecol = "";
+
+ if(colorize) {
+ color = ansi_codes[priority.color];
+ reset = ansi_codes[RESET];
+ timecol = ansi_codes[GRAY];
+ }
+
+ const char *timestr = current_time_str();
+ snprintf(buf, buflen, "%s%s %s%-7s%s %s", timecol, timestr, color, priority.name, reset, message);
+ return true;
+}
static bool should_log(debug_t level) {
return (level <= debug_level && logmode != LOGMODE_NULL) || logcontrol;
}
static void real_logger(debug_t level, int priority, const char *message) {
- char timestr[32] = "";
+ char pretty[1024] = "";
+ bool pretty_colorized = false;
static bool suppress = false;
if(suppress) {
if(level <= debug_level) {
switch(logmode) {
case LOGMODE_STDERR:
- fprintf(stderr, "%s\n", message);
+ format_pretty(pretty, sizeof(pretty), priority, message, colorize_stderr, &pretty_colorized);
+ fprintf(stderr, "%s\n", pretty);
fflush(stderr);
break;
- case LOGMODE_FILE:
- if(!now.tv_sec) {
- gettimeofday(&now, NULL);
- }
-
- time_t now_sec = now.tv_sec;
- strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&now_sec));
+ case LOGMODE_FILE: {
+ const char *timestr = current_time_str();
fprintf(logfile, "%s %s[%ld]: %s\n", timestr, logident, (long)logpid, message);
fflush(logfile);
break;
+ }
case LOGMODE_SYSLOG:
-#ifdef HAVE_MINGW
+#ifdef HAVE_WINDOWS
{
const char *messages[] = {message};
ReportEvent(loghandle, priority, 0, 0, NULL, 1, 0, messages, NULL);
}
if(umbilical && do_detach) {
- write(umbilical, message, strlen(message));
- write(umbilical, "\n", 1);
+ format_pretty(pretty, sizeof(pretty), priority, message, umbilical_colorize, &pretty_colorized);
+
+ if(write(umbilical, pretty, strlen(pretty)) == -1 || write(umbilical, "\n", 1) == -1) {
+ // Other end broken, nothing we can do about it.
+ }
}
}
- if(logcontrol && connection_list) {
+ if(logcontrol) {
suppress = true;
logcontrol = false;
- for list_each(connection_t, c, connection_list) {
+ size_t msglen = strlen(pretty);
+
+ for list_each(connection_t, c, &connection_list) {
if(!c->status.log) {
continue;
}
logcontrol = true;
- if(level > (c->outcompression >= COMPRESS_NONE ? c->outcompression : debug_level)) {
+ if(level > (c->log_level != DEBUG_UNSET ? c->log_level : debug_level)) {
continue;
}
- size_t len = strlen(message);
+ if(format_pretty(pretty, sizeof(pretty), priority, message, c->status.log_color, &pretty_colorized)) {
+ msglen = strlen(pretty);
+ }
- if(send_request(c, "%d %d %zu", CONTROL, REQ_LOG, len)) {
- send_meta(c, message, len);
+ if(send_request(c, "%d %d %lu", CONTROL, REQ_LOG, (unsigned long)msglen)) {
+ send_meta(c, pretty, msglen);
}
}
real_logger(level, priority, message);
}
+static void sptps_logger(sptps_t *s, int s_errno, const char *format, va_list ap) ATTR_FORMAT(printf, 3, 0);
static void sptps_logger(sptps_t *s, int s_errno, const char *format, va_list ap) {
(void)s_errno;
char message[1024];
size_t msglen = sizeof(message);
- if(!should_log(DEBUG_ALWAYS)) {
+ if(!should_log(DEBUG_TRAFFIC)) {
return;
}
}
}
- real_logger(DEBUG_ALWAYS, LOG_ERR, message);
+ real_logger(DEBUG_TRAFFIC, LOG_ERR, message);
}
void openlogger(const char *ident, logmode_t mode) {
switch(mode) {
case LOGMODE_STDERR:
logpid = getpid();
+ colorize_stderr = use_ansi_escapes(stderr);
break;
case LOGMODE_FILE:
break;
case LOGMODE_SYSLOG:
-#ifdef HAVE_MINGW
+#ifdef HAVE_WINDOWS
loghandle = RegisterEventSource(NULL, logident);
if(!loghandle) {
}
}
-void reopenlogger() {
+void reopenlogger(void) {
if(logmode != LOGMODE_FILE) {
return;
}
break;
case LOGMODE_SYSLOG:
-#ifdef HAVE_MINGW
+#ifdef HAVE_WINDOWS
DeregisterEventSource(loghandle);
break;
#else
projects / tinc / blobdiff