SSLproxy/extra/nssdebug/snoop-nss-verify.c
2019-08-08 12:23:04 +03:00

74 lines
2.9 KiB
C

/*-
* SSLsplit - transparent SSL/TLS interception
* https://www.roe.ch/SSLsplit
*
* Copyright (c) 2009-2019, Daniel Roethlisberger <daniel@roe.ch>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* LD_PRELOAD library overlay to print calls to NSS CERT_PKIXVerifyCert() and
* their error code. This function is used by Chrome and other browsers using
* NSS to verify server certificates. This overlay is intended to help finding
* the root cause for certificate verification failures in Chrome, that are
* mapped to Chrome error codes in MapSecurityError():
* https://chromium.googlesource.com/chromium/src/+/master/net/cert/cert_verify_proc_nss.cc
*
* Usage on Linux:
* gcc -shared -fPIC -o snoop-nss-verify.so snoop-nss-verify.c -ldl
* LD_PRELOAD=./snoop-nss-verify.so /usr/bin/google-chrome
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <stdio.h>
#define CERTCertificate void
#define SECCertificateUsage int64_t
#define CERTValInParam void
#define CERTValOutParam void
#define SECStatus int /* actually enum */
SECStatus
CERT_PKIXVerifyCert(CERTCertificate *cert,
SECCertificateUsage usages,
CERTValInParam *paramsIn,
CERTValOutParam *paramsOut,
void *wincx)
{
typeof(CERT_PKIXVerifyCert) *original;
SECStatus rv;
original = dlsym(RTLD_NEXT, "CERT_PKIXVerifyCert");
rv = original(cert, usages, paramsIn, paramsOut, wincx);
fprintf(stderr,
"CERT_PKIXVerifyCert(%p, %"PRId64", %p, %p, %p) => %i\n",
cert, usages, paramsIn, paramsOut, wincx, rv);
return rv;
}