code.delx.au - pulseaudio/blob - src/pulsecore/log.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as
  11   published by the Free Software Foundation; either version 2 of the
  12   License, or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public
  20   License along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <assert.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #include <unistd.h>
  33 #include <string.h>
  34
  35 #ifdef HAVE_SYSLOG_H
  36 #include <syslog.h>
  37 #endif
  38
  39 #include <pulse/utf8.h>
  40 #include <pulse/xmalloc.h>
  41 #include <pulse/util.h>
  42
  43 #include <pulsecore/core-util.h>
  44
  45 #include "log.h"
  46
  47 #define ENV_LOGLEVEL "PULSE_LOG"
  48 #define ENV_LOGMETA "PULSE_LOG_META"
  49
  50 static char *log_ident = NULL, *log_ident_local = NULL;
  51 static pa_log_target_t log_target = PA_LOG_STDERR;
  52 static void (*user_log_func)(pa_log_level_t l, const char *s) = NULL;
  53 static pa_log_level_t maximal_level = PA_LOG_NOTICE;
  54
  55 #ifdef HAVE_SYSLOG_H
  56 static const int level_to_syslog[] = {
  57     [PA_LOG_ERROR] = LOG_ERR,
  58     [PA_LOG_WARN] = LOG_WARNING,
  59     [PA_LOG_NOTICE] = LOG_NOTICE,
  60     [PA_LOG_INFO] = LOG_INFO,
  61     [PA_LOG_DEBUG] = LOG_DEBUG
  62 };
  63 #endif
  64
  65 static const char level_to_char[] = {
  66     [PA_LOG_ERROR] = 'E',
  67     [PA_LOG_WARN] = 'W',
  68     [PA_LOG_NOTICE] = 'N',
  69     [PA_LOG_INFO] = 'I',
  70     [PA_LOG_DEBUG] = 'D'
  71 };
  72
  73 void pa_log_set_ident(const char *p) {
  74     if (log_ident)
  75         pa_xfree(log_ident);
  76     if (log_ident_local)
  77         pa_xfree(log_ident_local);
  78
  79     log_ident = pa_xstrdup(p);
  80     log_ident_local = pa_utf8_to_locale(log_ident);
  81     if (!log_ident_local)
  82         log_ident_local = pa_xstrdup(log_ident);
  83 }
  84
  85 void pa_log_set_maximal_level(pa_log_level_t l) {
  86     assert(l < PA_LOG_LEVEL_MAX);
  87     maximal_level = l;
  88 }
  89
  90 void pa_log_set_target(pa_log_target_t t, void (*func)(pa_log_level_t l, const char*s)) {
  91     assert(t == PA_LOG_USER || !func);
  92     log_target = t;
  93     user_log_func = func;
  94 }
  95
  96 void pa_log_levelv_meta(
  97         pa_log_level_t level,
  98         const char*file,
  99         int line,
 100         const char *func,
 101         const char *format,
 102         va_list ap) {
 103
 104     const char *e;
 105     char *text, *t, *n, *location;
 106
 107     assert(level < PA_LOG_LEVEL_MAX);
 108     assert(format);
 109
 110     if ((e = getenv(ENV_LOGLEVEL)))
 111         maximal_level = atoi(e);
 112
 113     if (level > maximal_level)
 114         return;
 115
 116     text = pa_vsprintf_malloc(format, ap);
 117
 118     if (getenv(ENV_LOGMETA) && file && line > 0 && func)
 119         location = pa_sprintf_malloc("[%s:%i %s()] ", file, line, func);
 120     else if (file)
 121         location = pa_sprintf_malloc("%s: ", pa_path_get_filename(file));
 122     else
 123         location = pa_xstrdup("");
 124
 125     if (!pa_utf8_valid(text))
 126         pa_log_level(level, __FILE__": invalid UTF-8 string following below:");
 127
 128     for (t = text; t; t = n) {
 129         if ((n = strchr(t, '\n'))) {
 130             *n = 0;
 131             n++;
 132         }
 133
 134         if (!*t)
 135             continue;
 136
 137         switch (log_target) {
 138             case PA_LOG_STDERR: {
 139                 const char *prefix = "", *suffix = "";
 140                 char *local_t;
 141
 142 #ifndef OS_IS_WIN32
 143                 /* Yes indeed. Useless, but fun! */
 144                 if (isatty(STDERR_FILENO)) {
 145                     if (level <= PA_LOG_ERROR) {
 146                         prefix = "\x1B[1;31m";
 147                         suffix = "\x1B[0m";
 148                     } else if (level <= PA_LOG_WARN) {
 149                         prefix = "\x1B[1m";
 150                         suffix = "\x1B[0m";
 151                     }
 152                 }
 153 #endif
 154
 155                 local_t = pa_utf8_to_locale(t);
 156                 if (!local_t)
 157                     fprintf(stderr, "%c: %s%s%s%s\n", level_to_char[level], location, prefix, t, suffix);
 158                 else {
 159                     fprintf(stderr, "%c: %s%s%s%s\n", level_to_char[level], location, prefix, local_t, suffix);
 160                     pa_xfree(local_t);
 161                 }
 162
 163                 break;
 164             }
 165
 166 #ifdef HAVE_SYSLOG_H
 167             case PA_LOG_SYSLOG: {
 168                 char *local_t;
 169
 170                 openlog(log_ident_local ? log_ident_local : "???", LOG_PID, LOG_USER);
 171
 172                 local_t = pa_utf8_to_locale(t);
 173                 if (!local_t)
 174                     syslog(level_to_syslog[level], "%s%s", location, t);
 175                 else {
 176                     syslog(level_to_syslog[level], "%s%s", location, local_t);
 177                     pa_xfree(local_t);
 178                 }
 179
 180                 closelog();
 181                 break;
 182             }
 183 #endif
 184
 185             case PA_LOG_USER: {
 186                 char *x;
 187
 188                 x = pa_sprintf_malloc("%s%s", location, t);
 189                 user_log_func(level, x);
 190                 pa_xfree(x);
 191
 192                 break;
 193             }
 194
 195             case PA_LOG_NULL:
 196             default:
 197                 break;
 198         }
 199     }
 200
 201     pa_xfree(text);
 202     pa_xfree(location);
 203 }
 204
 205 void pa_log_level_meta(
 206         pa_log_level_t level,
 207         const char*file,
 208         int line,
 209         const char *func,
 210         const char *format, ...) {
 211
 212     va_list ap;
 213     va_start(ap, format);
 214     pa_log_levelv_meta(level, file, line, func, format, ap);
 215     va_end(ap);
 216 }
 217
 218 void pa_log_levelv(pa_log_level_t level, const char *format, va_list ap) {
 219     pa_log_levelv_meta(level, NULL, 0, NULL, format, ap);
 220 }
 221
 222 void pa_log_level(pa_log_level_t level, const char *format, ...) {
 223     va_list ap;
 224     va_start(ap, format);
 225     pa_log_levelv_meta(level, NULL, 0, NULL, format, ap);
 226     va_end(ap);
 227 }