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