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
|
/*
* Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/trace.h>
#include "apps.h"
#include "log.h"
static int verbosity = LOG_INFO;
int log_set_verbosity(const char *prog, int level)
{
if (level < LOG_EMERG || level > LOG_TRACE) {
trace_log_message(-1, prog, LOG_ERR,
"Invalid verbosity level %d", level);
return 0;
}
verbosity = level;
return 1;
}
int log_get_verbosity(void)
{
return verbosity;
}
#ifdef HTTP_DAEMON
static int print_syslog(const char *str, size_t len, void *levPtr)
{
int level = *(int *)levPtr;
int ilen = len > MAXERRLEN ? MAXERRLEN : len;
syslog(level, "%.*s", ilen, str);
return ilen;
}
#endif
static void log_with_prefix(const char *prog, const char *fmt, va_list ap)
{
char prefix[80];
BIO *bio, *pre = BIO_new(BIO_f_prefix());
(void)BIO_snprintf(prefix, sizeof(prefix), "%s: ", prog);
(void)BIO_set_prefix(pre, prefix);
bio = BIO_push(pre, bio_err);
(void)BIO_vprintf(bio, fmt, ap);
(void)BIO_printf(bio, "\n");
(void)BIO_flush(bio);
(void)BIO_pop(pre);
BIO_free(pre);
}
/*
* Unfortunately, C before C99 does not define va_copy, so we must
* check if it can be assumed to be present. We do that with an internal
* antifeature macro.
* C versions since C94 define __STDC_VERSION__, so it's enough to
* check its existence and value.
*/
#undef OSSL_NO_C99
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ + 0 < 199900L
# define OSSL_NO_C99
#endif
void trace_log_message(int category,
const char *prog, int level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
#ifdef OSSL_NO_C99
if (verbosity >= level)
category = -1; /* disabling trace output in addition to logging */
#endif
if (category >= 0 && OSSL_trace_enabled(category)) {
BIO *out = OSSL_trace_begin(category);
#ifndef OSSL_NO_C99
va_list ap_copy;
va_copy(ap_copy, ap);
(void)BIO_vprintf(out, fmt, ap_copy);
va_end(ap_copy);
#else
(void)BIO_vprintf(out, fmt, ap);
#endif
(void)BIO_printf(out, "\n");
OSSL_trace_end(category, out);
}
if (verbosity < level) {
va_end(ap);
return;
}
#ifdef HTTP_DAEMON
if (n_responders != 0) {
vsyslog(level, fmt, ap);
if (level <= LOG_ERR)
ERR_print_errors_cb(print_syslog, &level);
} else
#endif
log_with_prefix(prog, fmt, ap);
va_end(ap);
}
|
