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74 lines
2.9 KiB
C
74 lines
2.9 KiB
C
/*-
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* SSLsplit - transparent SSL/TLS interception
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* https://www.roe.ch/SSLsplit
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*
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* Copyright (c) 2009-2018, Daniel Roethlisberger <daniel@roe.ch>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* LD_PRELOAD library overlay to print calls to NSS CERT_PKIXVerifyCert() and
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* their error code. This function is used by Chrome and other browsers using
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* NSS to verify server certificates. This overlay is intended to help finding
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* the root cause for certificate verification failures in Chrome, that are
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* mapped to Chrome error codes in MapSecurityError():
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* https://chromium.googlesource.com/chromium/src/+/master/net/cert/cert_verify_proc_nss.cc
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*
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* Usage on Linux:
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* gcc -shared -fPIC -o snoop-nss-verify.so snoop-nss-verify.c -ldl
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* LD_PRELOAD=./snoop-nss-verify.so /usr/bin/google-chrome
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*/
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <dlfcn.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <stdio.h>
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#define CERTCertificate void
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#define SECCertificateUsage int64_t
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#define CERTValInParam void
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#define CERTValOutParam void
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#define SECStatus int /* actually enum */
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SECStatus
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CERT_PKIXVerifyCert(CERTCertificate *cert,
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SECCertificateUsage usages,
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CERTValInParam *paramsIn,
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CERTValOutParam *paramsOut,
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void *wincx)
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{
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typeof(CERT_PKIXVerifyCert) *original;
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SECStatus rv;
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original = dlsym(RTLD_NEXT, "CERT_PKIXVerifyCert");
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rv = original(cert, usages, paramsIn, paramsOut, wincx);
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fprintf(stderr,
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"CERT_PKIXVerifyCert(%p, %"PRId64", %p, %p, %p) => %i\n",
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cert, usages, paramsIn, paramsOut, wincx, rv);
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return rv;
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}
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