Quelle ssl_engine_log.c Sprache: C

/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

/*                      _             _
*  _ __ ___   ___   __| |    ___ ___| |  mod_ssl
* | '_ ` _ \ / _ \ / _` |   / __/ __| |  Apache Interface to OpenSSL
* | | | | | | (_) | (_| |   \__ \__ \ |
* |_| |_| |_|\___/ \__,_|___|___/___/_|
*                      |_____|
*  ssl_engine_log.c
*  Logging Facility
*/
                             /* ``The difference between a computer
                                  industry job and open-source software
                                  hacking is about 30 hours a week.''
                                         -- Ralf S. Engelschall     */
#include "ssl_private.h"

/*  _________________________________________________________________
**
**  Logfile Support
**  _________________________________________________________________
*/

static const struct {
    const char *cpPattern;
    const char *cpAnnotation;
} ssl_log_annotate[] = {
    { "*envelope*bad*decrypt*", "wrong pass phrase!?" },
    { "*CLIENT_HELLO*unknown*protocol*", "speaking not SSL to HTTPS port!?" },
    { "*CLIENT_HELLO*http*request*", "speaking HTTP to HTTPS port!?" },
    { "*SSL3_READ_BYTES:sslv3*alert*bad*certificate*", "Subject CN in certificate not server name or identical to CA!?" },
    { "*self signed certificate in certificate chain*", "Client certificate signed by CA not known to server?" },
    { "*peer did not return a certificate*", "No CAs known to server for verification?" },
    { "*no shared cipher*", "Too restrictive SSLCipherSuite or using DSA server certificate?" },
    { "*no start line*", "Bad file contents or format - or even just a forgotten SSLCertificateKeyFile?" },
    { "*bad password read*", "You entered an incorrect pass phrase!?" },
    { "*bad mac decode*", "Browser still remembered details of a re-created server certificate?" },
    { NULL, NULL }
};

static const char *ssl_log_annotation(const char *error)
{
    int i = 0;

    while (ssl_log_annotate[i].cpPattern != NULL
           && ap_strcmp_match(error, ssl_log_annotate[i].cpPattern) != 0)
        i++;

    return ssl_log_annotate[i].cpAnnotation;
}

apr_status_t ssl_die(server_rec *s)
{
    if (s != NULL && s->is_virtual && s->error_fname != NULL)
        ap_log_error(APLOG_MARK, APLOG_EMERG, 0, NULL, APLOGNO(02311)
                     "Fatal error initialising mod_ssl, exiting. "
                     "See %s for more information",
                     ap_server_root_relative(s->process->pool,
                                             s->error_fname));
    else
        ap_log_error(APLOG_MARK, APLOG_EMERG, 0, NULL, APLOGNO(02312)
                     "Fatal error initialising mod_ssl, exiting.");

    return APR_EGENERAL;
}

static APR_INLINE
unsigned long modssl_ERR_peek_error_data(const char **data, int *flags)
{
#if OPENSSL_VERSION_NUMBER < 0x30000000L
    return ERR_peek_error_line_data(NULL, NULL, data, flags);
#else
    return ERR_peek_error_data(data, flags);
#endif
}

/*
* Prints the SSL library error information.
*/
void ssl_log_ssl_error(const char *file, int line, int level, server_rec *s)
{
    unsigned long e;
    const char *data;
    int flags;

    while ((e = modssl_ERR_peek_error_data(&data, &flags))) {
        const char *annotation;
        char err[256];

        if (!(flags & ERR_TXT_STRING)) {
            data = NULL;
        }

        ERR_error_string_n(e, err, sizeof err);
        annotation = ssl_log_annotation(err);

        ap_log_error(file, line, APLOG_MODULE_INDEX, level, 0, s,
                     "SSL Library Error: %s%s%s%s%s%s",
                     /* %s */
                     err,
                     /* %s%s%s */
                     data ? " (" : "", data ? data : "", data ? ")" : "",
                     /* %s%s */
                     annotation ? " -- " : "",
                     annotation ? annotation : "");

        /* Pop the error off the stack: */
        ERR_get_error();
    }
}

static void ssl_log_cert_error(const char *file, int line, int level,
                               apr_status_t rv, const server_rec *s,
                               const conn_rec *c, const request_rec *r,
                               apr_pool_t *p, X509 *cert, const char *format,
                               va_list ap)
{
    char buf[HUGE_STRING_LEN];
    int msglen, n;
    char *name;

    msglen = apr_vsnprintf(buf, sizeof buf, format, ap);

    if (cert) {
        BIO *bio = BIO_new(BIO_s_mem());

        if (bio) {
            /*
             * Limit the maximum length of the subject and issuer DN strings
             * in the log message. 300 characters should always be sufficient
             * for holding both the timestamp, module name, pid etc. stuff
             * at the beginning of the line and the trailing information about
             * serial, notbefore and notafter.
             */
            int maxdnlen = (HUGE_STRING_LEN - msglen - 300) / 2;

            BIO_puts(bio, " [subject: ");
            name = modssl_X509_NAME_to_string(p, X509_get_subject_name(cert),
                                              maxdnlen);
            if (!strIsEmpty(name)) {
                BIO_puts(bio, name);
            } else {
                BIO_puts(bio, "-empty-");
            }

            BIO_puts(bio, " / issuer: ");
            name = modssl_X509_NAME_to_string(p, X509_get_issuer_name(cert),
                                              maxdnlen);
            if (!strIsEmpty(name)) {
                BIO_puts(bio, name);
            } else {
                BIO_puts(bio, "-empty-");
            }

            BIO_puts(bio, " / serial: ");
            if (i2a_ASN1_INTEGER(bio, X509_get_serialNumber(cert)) == -1)
                BIO_puts(bio, "(ERROR)");

            BIO_puts(bio, " / notbefore: ");
            ASN1_TIME_print(bio, X509_get_notBefore(cert));

            BIO_puts(bio, " / notafter: ");
            ASN1_TIME_print(bio, X509_get_notAfter(cert));

            BIO_puts(bio, "]");

            n = BIO_read(bio, buf + msglen, sizeof buf - msglen - 1);
            if (n > 0)
               buf[msglen + n] = '\0';

            BIO_free(bio);
        }
    }
    else {
        apr_snprintf(buf + msglen, sizeof buf - msglen,
                     " [certificate: -not available-]");
    }

    if (r) {
        ap_log_rerror(file, line, APLOG_MODULE_INDEX, level, rv, r, "%s", buf);
    }
    else if (c) {
        ap_log_cerror(file, line, APLOG_MODULE_INDEX, level, rv, c, "%s", buf);
    }
    else if (s) {
        ap_log_error(file, line, APLOG_MODULE_INDEX, level, rv, s, "%s", buf);
    }

}

/*
* Wrappers for ap_log_error/ap_log_cerror/ap_log_rerror which log additional
* details of the X509 cert. For ssl_log_xerror, a pool needs to be passed in
* as well (for temporary allocation of the cert's subject/issuer name strings,
* in the other cases we use the connection and request pool, respectively).
*/
void ssl_log_xerror(const char *file, int line, int level, apr_status_t rv,
                    apr_pool_t *ptemp, server_rec *s, X509 *cert,
                    const char *fmt, ...)
{
    if (APLOG_IS_LEVEL(s,level)) {
       va_list ap;
       va_start(ap, fmt);
       ssl_log_cert_error(file, line, level, rv, s, NULL, NULL, ptemp,
                          cert, fmt, ap);
       va_end(ap);
    }
}

void ssl_log_cxerror(const char *file, int line, int level, apr_status_t rv,
                     conn_rec *c, X509 *cert, const char *fmt, ...)
{
    if (APLOG_IS_LEVEL(mySrvFromConn(c),level)) {
       va_list ap;
       va_start(ap, fmt);
       ssl_log_cert_error(file, line, level, rv, NULL, c, NULL, c->pool,
                          cert, fmt, ap);
       va_end(ap);
    }
}

void ssl_log_rxerror(const char *file, int line, int level, apr_status_t rv,
                     request_rec *r, X509 *cert, const char *fmt, ...)
{
    if (APLOG_R_IS_LEVEL(r,level)) {
       va_list ap;
       va_start(ap, fmt);
       ssl_log_cert_error(file, line, level, rv, NULL, NULL, r, r->pool,
                          cert, fmt, ap);
       va_end(ap);
    }
}

quality96%

¤ Dauer der Verarbeitung: 0.16 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.