summaryrefslogtreecommitdiffstats
path: root/src/pulsecore/log.c
blob: c824e84d198f4d5f4edd2c80b47238a95f414e5b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
/* $Id$ */

/***
  This file is part of PulseAudio.

  Copyright 2004-2006 Lennart Poettering
  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB

  PulseAudio is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.

  PulseAudio is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with PulseAudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif

#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulse/util.h>

#include <pulsecore/macro.h>
#include <pulsecore/core-util.h>

#include "log.h"

#define ENV_LOGLEVEL "PULSE_LOG"
#define ENV_LOGMETA "PULSE_LOG_META"

static char *log_ident = NULL, *log_ident_local = NULL;
static pa_log_target_t log_target = PA_LOG_STDERR;
static void (*user_log_func)(pa_log_level_t l, const char *s) = NULL;
static pa_log_level_t maximal_level = PA_LOG_NOTICE;

#ifdef HAVE_SYSLOG_H
static const int level_to_syslog[] = {
    [PA_LOG_ERROR] = LOG_ERR,
    [PA_LOG_WARN] = LOG_WARNING,
    [PA_LOG_NOTICE] = LOG_NOTICE,
    [PA_LOG_INFO] = LOG_INFO,
    [PA_LOG_DEBUG] = LOG_DEBUG
};
#endif

static const char level_to_char[] = {
    [PA_LOG_ERROR] = 'E',
    [PA_LOG_WARN] = 'W',
    [PA_LOG_NOTICE] = 'N',
    [PA_LOG_INFO] = 'I',
    [PA_LOG_DEBUG] = 'D'
};

void pa_log_set_ident(const char *p) {
    pa_xfree(log_ident);
    pa_xfree(log_ident_local);

    log_ident = pa_xstrdup(p);
    if (!(log_ident_local = pa_utf8_to_locale(log_ident)))
        log_ident_local = pa_xstrdup(log_ident);
}

/* To make valgrind shut up. */
static void ident_destructor(void) PA_GCC_DESTRUCTOR;
static void ident_destructor(void) {
    pa_xfree(log_ident);
    pa_xfree(log_ident_local);
}

void pa_log_set_maximal_level(pa_log_level_t l) {
    pa_assert(l < PA_LOG_LEVEL_MAX);

    maximal_level = l;
}

void pa_log_set_target(pa_log_target_t t, void (*func)(pa_log_level_t l, const char*s)) {
    pa_assert(t == PA_LOG_USER || !func);

    log_target = t;
    user_log_func = func;
}

void pa_log_levelv_meta(
        pa_log_level_t level,
        const char*file,
        int line,
        const char *func,
        const char *format,
        va_list ap) {

    const char *e;
    char *text, *t, *n, *location;

    pa_assert(level < PA_LOG_LEVEL_MAX);
    pa_assert(format);

    if ((e = getenv(ENV_LOGLEVEL)))
        maximal_level = atoi(e);

    if (level > maximal_level)
        return;

    text = pa_vsprintf_malloc(format, ap);

    if (getenv(ENV_LOGMETA) && file && line > 0 && func)
        location = pa_sprintf_malloc("[%s:%i %s()] ", file, line, func);
    else if (file)
        location = pa_sprintf_malloc("%s: ", pa_path_get_filename(file));
    else
        location = pa_xstrdup("");

    if (!pa_utf8_valid(text))
        pa_log_level(level, __FILE__": invalid UTF-8 string following below:");

    for (t = text; t; t = n) {
        if ((n = strchr(t, '\n'))) {
            *n = 0;
            n++;
        }

        if (!*t)
            continue;

        switch (log_target) {
            case PA_LOG_STDERR: {
                const char *prefix = "", *suffix = "";
                char *local_t;

#ifndef OS_IS_WIN32
                /* Yes indeed. Useless, but fun! */
                if (isatty(STDERR_FILENO)) {
                    if (level <= PA_LOG_ERROR) {
                        prefix = "\x1B[1;31m";
                        suffix = "\x1B[0m";
                    } else if (level <= PA_LOG_WARN) {
                        prefix = "\x1B[1m";
                        suffix = "\x1B[0m";
                    }
                }
#endif

                local_t = pa_utf8_to_locale(t);
                if (!local_t)
                    fprintf(stderr, "%c: %s%s%s%s\n", level_to_char[level], location, prefix, t, suffix);
                else {
                    fprintf(stderr, "%c: %s%s%s%s\n", level_to_char[level], location, prefix, local_t, suffix);
                    pa_xfree(local_t);
                }

                break;
            }

#ifdef HAVE_SYSLOG_H
            case PA_LOG_SYSLOG: {
                char *local_t;

                openlog(log_ident_local ? log_ident_local : "???", LOG_PID, LOG_USER);

                local_t = pa_utf8_to_locale(t);
                if (!local_t)
                    syslog(level_to_syslog[level], "%s%s", location, t);
                else {
                    syslog(level_to_syslog[level], "%s%s", location, local_t);
                    pa_xfree(local_t);
                }

                closelog();
                break;
            }
#endif

            case PA_LOG_USER: {
                char *x;

                x = pa_sprintf_malloc("%s%s", location, t);
                user_log_func(level, x);
                pa_xfree(x);

                break;
            }

            case PA_LOG_NULL:
            default:
                break;
        }
    }

    pa_xfree(text);
    pa_xfree(location);
}

void pa_log_level_meta(
        pa_log_level_t level,
        const char*file,
        int line,
        const char *func,
        const char *format, ...) {

    va_list ap;
    va_start(ap, format);
    pa_log_levelv_meta(level, file, line, func, format, ap);
    va_end(ap);
}

void pa_log_levelv(pa_log_level_t level, const char *format, va_list ap) {
    pa_log_levelv_meta(level, NULL, 0, NULL, format, ap);
}

void pa_log_level(pa_log_level_t level, const char *format, ...) {
    va_list ap;

    va_start(ap, format);
    pa_log_levelv_meta(level, NULL, 0, NULL, format, ap);
    va_end(ap);
}