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      1 /* Copyright (c) 2017, Google Inc.
      2  *
      3  * Permission to use, copy, modify, and/or distribute this software for any
      4  * purpose with or without fee is hereby granted, provided that the above
      5  * copyright notice and this permission notice appear in all copies.
      6  *
      7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
     12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
     14 
     15 #ifndef HEADER_SSL_TEST_FUZZER
     16 #define HEADER_SSL_TEST_FUZZER
     17 
     18 #include <assert.h>
     19 #include <stdlib.h>
     20 #include <string.h>
     21 
     22 #include <algorithm>
     23 
     24 #include <openssl/bio.h>
     25 #include <openssl/bytestring.h>
     26 #include <openssl/err.h>
     27 #include <openssl/evp.h>
     28 #include <openssl/rand.h>
     29 #include <openssl/rsa.h>
     30 #include <openssl/ssl.h>
     31 #include <openssl/x509.h>
     32 
     33 #include "../internal.h"
     34 #include "./fuzzer_tags.h"
     35 
     36 namespace {
     37 
     38 const uint8_t kP256KeyPKCS8[] = {
     39     0x30, 0x81, 0x87, 0x02, 0x01, 0x00, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86,
     40     0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
     41     0x03, 0x01, 0x07, 0x04, 0x6d, 0x30, 0x6b, 0x02, 0x01, 0x01, 0x04, 0x20,
     42     0x43, 0x09, 0xc0, 0x67, 0x75, 0x21, 0x47, 0x9d, 0xa8, 0xfa, 0x16, 0xdf,
     43     0x15, 0x73, 0x61, 0x34, 0x68, 0x6f, 0xe3, 0x8e, 0x47, 0x91, 0x95, 0xab,
     44     0x79, 0x4a, 0x72, 0x14, 0xcb, 0xe2, 0x49, 0x4f, 0xa1, 0x44, 0x03, 0x42,
     45     0x00, 0x04, 0xde, 0x09, 0x08, 0x07, 0x03, 0x2e, 0x8f, 0x37, 0x9a, 0xd5,
     46     0xad, 0xe5, 0xc6, 0x9d, 0xd4, 0x63, 0xc7, 0x4a, 0xe7, 0x20, 0xcb, 0x90,
     47     0xa0, 0x1f, 0x18, 0x18, 0x72, 0xb5, 0x21, 0x88, 0x38, 0xc0, 0xdb, 0xba,
     48     0xf6, 0x99, 0xd8, 0xa5, 0x3b, 0x83, 0xe9, 0xe3, 0xd5, 0x61, 0x99, 0x73,
     49     0x42, 0xc6, 0x6c, 0xe8, 0x0a, 0x95, 0x40, 0x41, 0x3b, 0x0d, 0x10, 0xa7,
     50     0x4a, 0x93, 0xdb, 0x5a, 0xe7, 0xec,
     51 };
     52 
     53 const uint8_t kOCSPResponse[] = {0x01, 0x02, 0x03, 0x04};
     54 
     55 const uint8_t kSCT[] = {0x00, 0x06, 0x00, 0x04, 0x05, 0x06, 0x07, 0x08};
     56 
     57 const uint8_t kCertificateDER[] = {
     58     0x30, 0x82, 0x02, 0xff, 0x30, 0x82, 0x01, 0xe7, 0xa0, 0x03, 0x02, 0x01,
     59     0x02, 0x02, 0x11, 0x00, 0xb1, 0x84, 0xee, 0x34, 0x99, 0x98, 0x76, 0xfb,
     60     0x6f, 0xb2, 0x15, 0xc8, 0x47, 0x79, 0x05, 0x9b, 0x30, 0x0d, 0x06, 0x09,
     61     0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30,
     62     0x12, 0x31, 0x10, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x07,
     63     0x41, 0x63, 0x6d, 0x65, 0x20, 0x43, 0x6f, 0x30, 0x1e, 0x17, 0x0d, 0x31,
     64     0x35, 0x31, 0x31, 0x30, 0x37, 0x30, 0x30, 0x32, 0x34, 0x35, 0x36, 0x5a,
     65     0x17, 0x0d, 0x31, 0x36, 0x31, 0x31, 0x30, 0x36, 0x30, 0x30, 0x32, 0x34,
     66     0x35, 0x36, 0x5a, 0x30, 0x12, 0x31, 0x10, 0x30, 0x0e, 0x06, 0x03, 0x55,
     67     0x04, 0x0a, 0x13, 0x07, 0x41, 0x63, 0x6d, 0x65, 0x20, 0x43, 0x6f, 0x30,
     68     0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
     69     0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30,
     70     0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xce, 0x47, 0xcb, 0x11,
     71     0xbb, 0xd2, 0x9d, 0x8e, 0x9e, 0xd2, 0x1e, 0x14, 0xaf, 0xc7, 0xea, 0xb6,
     72     0xc9, 0x38, 0x2a, 0x6f, 0xb3, 0x7e, 0xfb, 0xbc, 0xfc, 0x59, 0x42, 0xb9,
     73     0x56, 0xf0, 0x4c, 0x3f, 0xf7, 0x31, 0x84, 0xbe, 0xac, 0x03, 0x9e, 0x71,
     74     0x91, 0x85, 0xd8, 0x32, 0xbd, 0x00, 0xea, 0xac, 0x65, 0xf6, 0x03, 0xc8,
     75     0x0f, 0x8b, 0xfd, 0x6e, 0x58, 0x88, 0x04, 0x41, 0x92, 0x74, 0xa6, 0x57,
     76     0x2e, 0x8e, 0x88, 0xd5, 0x3d, 0xda, 0x14, 0x3e, 0x63, 0x88, 0x22, 0xe3,
     77     0x53, 0xe9, 0xba, 0x39, 0x09, 0xac, 0xfb, 0xd0, 0x4c, 0xf2, 0x3c, 0x20,
     78     0xd6, 0x97, 0xe6, 0xed, 0xf1, 0x62, 0x1e, 0xe5, 0xc9, 0x48, 0xa0, 0xca,
     79     0x2e, 0x3c, 0x14, 0x5a, 0x82, 0xd4, 0xed, 0xb1, 0xe3, 0x43, 0xc1, 0x2a,
     80     0x59, 0xa5, 0xb9, 0xc8, 0x48, 0xa7, 0x39, 0x23, 0x74, 0xa7, 0x37, 0xb0,
     81     0x6f, 0xc3, 0x64, 0x99, 0x6c, 0xa2, 0x82, 0xc8, 0xf6, 0xdb, 0x86, 0x40,
     82     0xce, 0xd1, 0x85, 0x9f, 0xce, 0x69, 0xf4, 0x15, 0x2a, 0x23, 0xca, 0xea,
     83     0xb7, 0x7b, 0xdf, 0xfb, 0x43, 0x5f, 0xff, 0x7a, 0x49, 0x49, 0x0e, 0xe7,
     84     0x02, 0x51, 0x45, 0x13, 0xe8, 0x90, 0x64, 0x21, 0x0c, 0x26, 0x2b, 0x5d,
     85     0xfc, 0xe4, 0xb5, 0x86, 0x89, 0x43, 0x22, 0x4c, 0xf3, 0x3b, 0xf3, 0x09,
     86     0xc4, 0xa4, 0x10, 0x80, 0xf2, 0x46, 0xe2, 0x46, 0x8f, 0x76, 0x50, 0xbf,
     87     0xaf, 0x2b, 0x90, 0x1b, 0x78, 0xc7, 0xcf, 0xc1, 0x77, 0xd0, 0xfb, 0xa9,
     88     0xfb, 0xc9, 0x66, 0x5a, 0xc5, 0x9b, 0x31, 0x41, 0x67, 0x01, 0xbe, 0x33,
     89     0x10, 0xba, 0x05, 0x58, 0xed, 0x76, 0x53, 0xde, 0x5d, 0xc1, 0xe8, 0xbb,
     90     0x9f, 0xf1, 0xcd, 0xfb, 0xdf, 0x64, 0x7f, 0xd7, 0x18, 0xab, 0x0f, 0x94,
     91     0x28, 0x95, 0x4a, 0xcc, 0x6a, 0xa9, 0x50, 0xc7, 0x05, 0x47, 0x10, 0x41,
     92     0x02, 0x03, 0x01, 0x00, 0x01, 0xa3, 0x50, 0x30, 0x4e, 0x30, 0x0e, 0x06,
     93     0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x05,
     94     0xa0, 0x30, 0x13, 0x06, 0x03, 0x55, 0x1d, 0x25, 0x04, 0x0c, 0x30, 0x0a,
     95     0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x01, 0x30, 0x0c,
     96     0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x02, 0x30, 0x00,
     97     0x30, 0x19, 0x06, 0x03, 0x55, 0x1d, 0x11, 0x04, 0x12, 0x30, 0x10, 0x82,
     98     0x0e, 0x66, 0x75, 0x7a, 0x7a, 0x2e, 0x62, 0x6f, 0x72, 0x69, 0x6e, 0x67,
     99     0x73, 0x73, 0x6c, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
    100     0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82, 0x01, 0x01, 0x00, 0x92,
    101     0xde, 0xef, 0x96, 0x06, 0x7b, 0xff, 0x71, 0x7d, 0x4e, 0xa0, 0x7d, 0xae,
    102     0xb8, 0x22, 0xb4, 0x2c, 0xf7, 0x96, 0x9c, 0x37, 0x1d, 0x8f, 0xe7, 0xd9,
    103     0x47, 0xff, 0x3f, 0xe9, 0x35, 0x95, 0x0e, 0xdd, 0xdc, 0x7f, 0xc8, 0x8a,
    104     0x1e, 0x36, 0x1d, 0x38, 0x47, 0xfc, 0x76, 0xd2, 0x1f, 0x98, 0xa1, 0x36,
    105     0xac, 0xc8, 0x70, 0x38, 0x0a, 0x3d, 0x51, 0x8d, 0x0f, 0x03, 0x1b, 0xef,
    106     0x62, 0xa1, 0xcb, 0x2b, 0x4a, 0x8c, 0x12, 0x2b, 0x54, 0x50, 0x9a, 0x6b,
    107     0xfe, 0xaf, 0xd9, 0xf6, 0xbf, 0x58, 0x11, 0x58, 0x5e, 0xe5, 0x86, 0x1e,
    108     0x3b, 0x6b, 0x30, 0x7e, 0x72, 0x89, 0xe8, 0x6b, 0x7b, 0xb7, 0xaf, 0xef,
    109     0x8b, 0xa9, 0x3e, 0xb0, 0xcd, 0x0b, 0xef, 0xb0, 0x0c, 0x96, 0x2b, 0xc5,
    110     0x3b, 0xd5, 0xf1, 0xc2, 0xae, 0x3a, 0x60, 0xd9, 0x0f, 0x75, 0x37, 0x55,
    111     0x4d, 0x62, 0xd2, 0xed, 0x96, 0xac, 0x30, 0x6b, 0xda, 0xa1, 0x48, 0x17,
    112     0x96, 0x23, 0x85, 0x9a, 0x57, 0x77, 0xe9, 0x22, 0xa2, 0x37, 0x03, 0xba,
    113     0x49, 0x77, 0x40, 0x3b, 0x76, 0x4b, 0xda, 0xc1, 0x04, 0x57, 0x55, 0x34,
    114     0x22, 0x83, 0x45, 0x29, 0xab, 0x2e, 0x11, 0xff, 0x0d, 0xab, 0x55, 0xb1,
    115     0xa7, 0x58, 0x59, 0x05, 0x25, 0xf9, 0x1e, 0x3d, 0xb7, 0xac, 0x04, 0x39,
    116     0x2c, 0xf9, 0xaf, 0xb8, 0x68, 0xfb, 0x8e, 0x35, 0x71, 0x32, 0xff, 0x70,
    117     0xe9, 0x46, 0x6d, 0x5c, 0x06, 0x90, 0x88, 0x23, 0x48, 0x0c, 0x50, 0xeb,
    118     0x0a, 0xa9, 0xae, 0xe8, 0xfc, 0xbe, 0xa5, 0x76, 0x94, 0xd7, 0x64, 0x22,
    119     0x38, 0x98, 0x17, 0xa4, 0x3a, 0xa7, 0x59, 0x9f, 0x1d, 0x3b, 0x75, 0x90,
    120     0x1a, 0x81, 0xef, 0x19, 0xfb, 0x2b, 0xb7, 0xa7, 0x64, 0x61, 0x22, 0xa4,
    121     0x6f, 0x7b, 0xfa, 0x58, 0xbb, 0x8c, 0x4e, 0x77, 0x67, 0xd0, 0x5d, 0x58,
    122     0x76, 0x8a, 0xbb,
    123 };
    124 
    125 const uint8_t kRSAPrivateKeyDER[] = {
    126     0x30, 0x82, 0x04, 0xa5, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00,
    127     0xce, 0x47, 0xcb, 0x11, 0xbb, 0xd2, 0x9d, 0x8e, 0x9e, 0xd2, 0x1e, 0x14,
    128     0xaf, 0xc7, 0xea, 0xb6, 0xc9, 0x38, 0x2a, 0x6f, 0xb3, 0x7e, 0xfb, 0xbc,
    129     0xfc, 0x59, 0x42, 0xb9, 0x56, 0xf0, 0x4c, 0x3f, 0xf7, 0x31, 0x84, 0xbe,
    130     0xac, 0x03, 0x9e, 0x71, 0x91, 0x85, 0xd8, 0x32, 0xbd, 0x00, 0xea, 0xac,
    131     0x65, 0xf6, 0x03, 0xc8, 0x0f, 0x8b, 0xfd, 0x6e, 0x58, 0x88, 0x04, 0x41,
    132     0x92, 0x74, 0xa6, 0x57, 0x2e, 0x8e, 0x88, 0xd5, 0x3d, 0xda, 0x14, 0x3e,
    133     0x63, 0x88, 0x22, 0xe3, 0x53, 0xe9, 0xba, 0x39, 0x09, 0xac, 0xfb, 0xd0,
    134     0x4c, 0xf2, 0x3c, 0x20, 0xd6, 0x97, 0xe6, 0xed, 0xf1, 0x62, 0x1e, 0xe5,
    135     0xc9, 0x48, 0xa0, 0xca, 0x2e, 0x3c, 0x14, 0x5a, 0x82, 0xd4, 0xed, 0xb1,
    136     0xe3, 0x43, 0xc1, 0x2a, 0x59, 0xa5, 0xb9, 0xc8, 0x48, 0xa7, 0x39, 0x23,
    137     0x74, 0xa7, 0x37, 0xb0, 0x6f, 0xc3, 0x64, 0x99, 0x6c, 0xa2, 0x82, 0xc8,
    138     0xf6, 0xdb, 0x86, 0x40, 0xce, 0xd1, 0x85, 0x9f, 0xce, 0x69, 0xf4, 0x15,
    139     0x2a, 0x23, 0xca, 0xea, 0xb7, 0x7b, 0xdf, 0xfb, 0x43, 0x5f, 0xff, 0x7a,
    140     0x49, 0x49, 0x0e, 0xe7, 0x02, 0x51, 0x45, 0x13, 0xe8, 0x90, 0x64, 0x21,
    141     0x0c, 0x26, 0x2b, 0x5d, 0xfc, 0xe4, 0xb5, 0x86, 0x89, 0x43, 0x22, 0x4c,
    142     0xf3, 0x3b, 0xf3, 0x09, 0xc4, 0xa4, 0x10, 0x80, 0xf2, 0x46, 0xe2, 0x46,
    143     0x8f, 0x76, 0x50, 0xbf, 0xaf, 0x2b, 0x90, 0x1b, 0x78, 0xc7, 0xcf, 0xc1,
    144     0x77, 0xd0, 0xfb, 0xa9, 0xfb, 0xc9, 0x66, 0x5a, 0xc5, 0x9b, 0x31, 0x41,
    145     0x67, 0x01, 0xbe, 0x33, 0x10, 0xba, 0x05, 0x58, 0xed, 0x76, 0x53, 0xde,
    146     0x5d, 0xc1, 0xe8, 0xbb, 0x9f, 0xf1, 0xcd, 0xfb, 0xdf, 0x64, 0x7f, 0xd7,
    147     0x18, 0xab, 0x0f, 0x94, 0x28, 0x95, 0x4a, 0xcc, 0x6a, 0xa9, 0x50, 0xc7,
    148     0x05, 0x47, 0x10, 0x41, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01,
    149     0x01, 0x00, 0xa8, 0x47, 0xb9, 0x4a, 0x06, 0x47, 0x93, 0x71, 0x3d, 0xef,
    150     0x7b, 0xca, 0xb4, 0x7c, 0x0a, 0xe6, 0x82, 0xd0, 0xe7, 0x0d, 0xa9, 0x08,
    151     0xf6, 0xa4, 0xfd, 0xd8, 0x73, 0xae, 0x6f, 0x56, 0x29, 0x5e, 0x25, 0x72,
    152     0xa8, 0x30, 0x44, 0x73, 0xcf, 0x56, 0x26, 0xb9, 0x61, 0xde, 0x42, 0x81,
    153     0xf4, 0xf0, 0x1f, 0x5d, 0xcb, 0x47, 0xf2, 0x26, 0xe9, 0xe0, 0x93, 0x28,
    154     0xa3, 0x10, 0x3b, 0x42, 0x1e, 0x51, 0x11, 0x12, 0x06, 0x5e, 0xaf, 0xce,
    155     0xb0, 0xa5, 0x14, 0xdd, 0x82, 0x58, 0xa1, 0xa4, 0x12, 0xdf, 0x65, 0x1d,
    156     0x51, 0x70, 0x64, 0xd5, 0x58, 0x68, 0x11, 0xa8, 0x6a, 0x23, 0xc2, 0xbf,
    157     0xa1, 0x25, 0x24, 0x47, 0xb3, 0xa4, 0x3c, 0x83, 0x96, 0xb7, 0x1f, 0xf4,
    158     0x44, 0xd4, 0xd1, 0xe9, 0xfc, 0x33, 0x68, 0x5e, 0xe2, 0x68, 0x99, 0x9c,
    159     0x91, 0xe8, 0x72, 0xc9, 0xd7, 0x8c, 0x80, 0x20, 0x8e, 0x77, 0x83, 0x4d,
    160     0xe4, 0xab, 0xf9, 0x74, 0xa1, 0xdf, 0xd3, 0xc0, 0x0d, 0x5b, 0x05, 0x51,
    161     0xc2, 0x6f, 0xb2, 0x91, 0x02, 0xec, 0xc0, 0x02, 0x1a, 0x5c, 0x91, 0x05,
    162     0xf1, 0xe3, 0xfa, 0x65, 0xc2, 0xad, 0x24, 0xe6, 0xe5, 0x3c, 0xb6, 0x16,
    163     0xf1, 0xa1, 0x67, 0x1a, 0x9d, 0x37, 0x56, 0xbf, 0x01, 0xd7, 0x3b, 0x35,
    164     0x30, 0x57, 0x73, 0xf4, 0xf0, 0x5e, 0xa7, 0xe8, 0x0a, 0xc1, 0x94, 0x17,
    165     0xcf, 0x0a, 0xbd, 0xf5, 0x31, 0xa7, 0x2d, 0xf7, 0xf5, 0xd9, 0x8c, 0xc2,
    166     0x01, 0xbd, 0xda, 0x16, 0x8e, 0xb9, 0x30, 0x40, 0xa6, 0x6e, 0xbd, 0xcd,
    167     0x4d, 0x84, 0x67, 0x4e, 0x0b, 0xce, 0xd5, 0xef, 0xf8, 0x08, 0x63, 0x02,
    168     0xc6, 0xc7, 0xf7, 0x67, 0x92, 0xe2, 0x23, 0x9d, 0x27, 0x22, 0x1d, 0xc6,
    169     0x67, 0x5e, 0x66, 0xbf, 0x03, 0xb8, 0xa9, 0x67, 0xd4, 0x39, 0xd8, 0x75,
    170     0xfa, 0xe8, 0xed, 0x56, 0xb8, 0x81, 0x02, 0x81, 0x81, 0x00, 0xf7, 0x46,
    171     0x68, 0xc6, 0x13, 0xf8, 0xba, 0x0f, 0x83, 0xdb, 0x05, 0xa8, 0x25, 0x00,
    172     0x70, 0x9c, 0x9e, 0x8b, 0x12, 0x34, 0x0d, 0x96, 0xcf, 0x0d, 0x98, 0x9b,
    173     0x8d, 0x9c, 0x96, 0x78, 0xd1, 0x3c, 0x01, 0x8c, 0xb9, 0x35, 0x5c, 0x20,
    174     0x42, 0xb4, 0x38, 0xe3, 0xd6, 0x54, 0xe7, 0x55, 0xd6, 0x26, 0x8a, 0x0c,
    175     0xf6, 0x1f, 0xe0, 0x04, 0xc1, 0x22, 0x42, 0x19, 0x61, 0xc4, 0x94, 0x7c,
    176     0x07, 0x2e, 0x80, 0x52, 0xfe, 0x8d, 0xe6, 0x92, 0x3a, 0x91, 0xfe, 0x72,
    177     0x99, 0xe1, 0x2a, 0x73, 0x76, 0xb1, 0x24, 0x20, 0x67, 0xde, 0x28, 0xcb,
    178     0x0e, 0xe6, 0x52, 0xb5, 0xfa, 0xfb, 0x8b, 0x1e, 0x6a, 0x1d, 0x09, 0x26,
    179     0xb9, 0xa7, 0x61, 0xba, 0xf8, 0x79, 0xd2, 0x66, 0x57, 0x28, 0xd7, 0x31,
    180     0xb5, 0x0b, 0x27, 0x19, 0x1e, 0x6f, 0x46, 0xfc, 0x54, 0x95, 0xeb, 0x78,
    181     0x01, 0xb6, 0xd9, 0x79, 0x5a, 0x4d, 0x02, 0x81, 0x81, 0x00, 0xd5, 0x8f,
    182     0x16, 0x53, 0x2f, 0x57, 0x93, 0xbf, 0x09, 0x75, 0xbf, 0x63, 0x40, 0x3d,
    183     0x27, 0xfd, 0x23, 0x21, 0xde, 0x9b, 0xe9, 0x73, 0x3f, 0x49, 0x02, 0xd2,
    184     0x38, 0x96, 0xcf, 0xc3, 0xba, 0x92, 0x07, 0x87, 0x52, 0xa9, 0x35, 0xe3,
    185     0x0c, 0xe4, 0x2f, 0x05, 0x7b, 0x37, 0xa5, 0x40, 0x9c, 0x3b, 0x94, 0xf7,
    186     0xad, 0xa0, 0xee, 0x3a, 0xa8, 0xfb, 0x1f, 0x11, 0x1f, 0xd8, 0x9a, 0x80,
    187     0x42, 0x3d, 0x7f, 0xa4, 0xb8, 0x9a, 0xaa, 0xea, 0x72, 0xc1, 0xe3, 0xed,
    188     0x06, 0x60, 0x92, 0x37, 0xf9, 0xba, 0xfb, 0x9e, 0xed, 0x05, 0xa6, 0xd4,
    189     0x72, 0x68, 0x4f, 0x63, 0xfe, 0xd6, 0x10, 0x0d, 0x4f, 0x0a, 0x93, 0xc6,
    190     0xb9, 0xd7, 0xaf, 0xfd, 0xd9, 0x57, 0x7d, 0xcb, 0x75, 0xe8, 0x93, 0x2b,
    191     0xae, 0x4f, 0xea, 0xd7, 0x30, 0x0b, 0x58, 0x44, 0x82, 0x0f, 0x84, 0x5d,
    192     0x62, 0x11, 0x78, 0xea, 0x5f, 0xc5, 0x02, 0x81, 0x81, 0x00, 0x82, 0x0c,
    193     0xc1, 0xe6, 0x0b, 0x72, 0xf1, 0x48, 0x5f, 0xac, 0xbd, 0x98, 0xe5, 0x7d,
    194     0x09, 0xbd, 0x15, 0x95, 0x47, 0x09, 0xa1, 0x6c, 0x03, 0x91, 0xbf, 0x05,
    195     0x70, 0xc1, 0x3e, 0x52, 0x64, 0x99, 0x0e, 0xa7, 0x98, 0x70, 0xfb, 0xf6,
    196     0xeb, 0x9e, 0x25, 0x9d, 0x8e, 0x88, 0x30, 0xf2, 0xf0, 0x22, 0x6c, 0xd0,
    197     0xcc, 0x51, 0x8f, 0x5c, 0x70, 0xc7, 0x37, 0xc4, 0x69, 0xab, 0x1d, 0xfc,
    198     0xed, 0x3a, 0x03, 0xbb, 0xa2, 0xad, 0xb6, 0xea, 0x89, 0x6b, 0x67, 0x4b,
    199     0x96, 0xaa, 0xd9, 0xcc, 0xc8, 0x4b, 0xfa, 0x18, 0x21, 0x08, 0xb2, 0xa3,
    200     0xb9, 0x3e, 0x61, 0x99, 0xdc, 0x5a, 0x97, 0x9c, 0x73, 0x6a, 0xb9, 0xf9,
    201     0x68, 0x03, 0x24, 0x5f, 0x55, 0x77, 0x9c, 0xb4, 0xbe, 0x7a, 0x78, 0x53,
    202     0x68, 0x48, 0x69, 0x53, 0xc8, 0xb1, 0xf5, 0xbf, 0x98, 0x2d, 0x11, 0x1e,
    203     0x98, 0xa8, 0x36, 0x50, 0xa0, 0xb1, 0x02, 0x81, 0x81, 0x00, 0x90, 0x88,
    204     0x30, 0x71, 0xc7, 0xfe, 0x9b, 0x6d, 0x95, 0x37, 0x6d, 0x79, 0xfc, 0x85,
    205     0xe7, 0x44, 0x78, 0xbc, 0x79, 0x6e, 0x47, 0x86, 0xc9, 0xf3, 0xdd, 0xc6,
    206     0xec, 0xa9, 0x94, 0x9f, 0x40, 0xeb, 0x87, 0xd0, 0xdb, 0xee, 0xcd, 0x1b,
    207     0x87, 0x23, 0xff, 0x76, 0xd4, 0x37, 0x8a, 0xcd, 0xb9, 0x6e, 0xd1, 0x98,
    208     0xf6, 0x97, 0x8d, 0xe3, 0x81, 0x6d, 0xc3, 0x4e, 0xd1, 0xa0, 0xc4, 0x9f,
    209     0xbd, 0x34, 0xe5, 0xe8, 0x53, 0x4f, 0xca, 0x10, 0xb5, 0xed, 0xe7, 0x16,
    210     0x09, 0x54, 0xde, 0x60, 0xa7, 0xd1, 0x16, 0x6e, 0x2e, 0xb7, 0xbe, 0x7a,
    211     0xd5, 0x9b, 0x26, 0xef, 0xe4, 0x0e, 0x77, 0xfa, 0xa9, 0xdd, 0xdc, 0xb9,
    212     0x88, 0x19, 0x23, 0x70, 0xc7, 0xe1, 0x60, 0xaf, 0x8c, 0x73, 0x04, 0xf7,
    213     0x71, 0x17, 0x81, 0x36, 0x75, 0xbb, 0x97, 0xd7, 0x75, 0xb6, 0x8e, 0xbc,
    214     0xac, 0x9c, 0x6a, 0x9b, 0x24, 0x89, 0x02, 0x81, 0x80, 0x5a, 0x2b, 0xc7,
    215     0x6b, 0x8c, 0x65, 0xdb, 0x04, 0x73, 0xab, 0x25, 0xe1, 0x5b, 0xbc, 0x3c,
    216     0xcf, 0x5a, 0x3c, 0x04, 0xae, 0x97, 0x2e, 0xfd, 0xa4, 0x97, 0x1f, 0x05,
    217     0x17, 0x27, 0xac, 0x7c, 0x30, 0x85, 0xb4, 0x82, 0x3f, 0x5b, 0xb7, 0x94,
    218     0x3b, 0x7f, 0x6c, 0x0c, 0xc7, 0x16, 0xc6, 0xa0, 0xbd, 0x80, 0xb0, 0x81,
    219     0xde, 0xa0, 0x23, 0xa6, 0xf6, 0x75, 0x33, 0x51, 0x35, 0xa2, 0x75, 0x55,
    220     0x70, 0x4d, 0x42, 0xbb, 0xcf, 0x54, 0xe4, 0xdb, 0x2d, 0x88, 0xa0, 0x7a,
    221     0xf2, 0x17, 0xa7, 0xdd, 0x13, 0x44, 0x9f, 0x5f, 0x6b, 0x2c, 0x42, 0x42,
    222     0x8b, 0x13, 0x4d, 0xf9, 0x5b, 0xf8, 0x33, 0x42, 0xd9, 0x9e, 0x50, 0x1c,
    223     0x7c, 0xbc, 0xfa, 0x62, 0x85, 0x0b, 0xcf, 0x99, 0xda, 0x9e, 0x04, 0x90,
    224     0xb2, 0xc6, 0xb2, 0x0a, 0x2a, 0x7c, 0x6d, 0x6a, 0x40, 0xfc, 0xf5, 0x50,
    225     0x98, 0x46, 0x89, 0x82, 0x40,
    226 };
    227 
    228 const uint8_t kALPNProtocols[] = {
    229     0x01, 'a', 0x02, 'a', 'a', 0x03, 'a', 'a', 'a',
    230 };
    231 
    232 int ALPNSelectCallback(SSL *ssl, const uint8_t **out, uint8_t *out_len,
    233                        const uint8_t *in, unsigned in_len, void *arg) {
    234   static const uint8_t kProtocol[] = {'a', 'a'};
    235   *out = kProtocol;
    236   *out_len = sizeof(kProtocol);
    237   return SSL_TLSEXT_ERR_OK;
    238 }
    239 
    240 int NPNSelectCallback(SSL *ssl, uint8_t **out, uint8_t *out_len,
    241                       const uint8_t *in, unsigned in_len, void *arg) {
    242   static const uint8_t kProtocol[] = {'a', 'a'};
    243   *out = const_cast<uint8_t *>(kProtocol);
    244   *out_len = sizeof(kProtocol);
    245   return SSL_TLSEXT_ERR_OK;
    246 }
    247 
    248 int NPNAdvertiseCallback(SSL *ssl, const uint8_t **out, unsigned *out_len,
    249                          void *arg) {
    250   static const uint8_t kProtocols[] = {
    251       0x01, 'a', 0x02, 'a', 'a', 0x03, 'a', 'a', 'a',
    252   };
    253   *out = kProtocols;
    254   *out_len = sizeof(kProtocols);
    255   return SSL_TLSEXT_ERR_OK;
    256 }
    257 
    258 class TLSFuzzer {
    259  public:
    260   enum Protocol {
    261     kTLS,
    262     kDTLS,
    263   };
    264 
    265   enum Role {
    266     kClient,
    267     kServer,
    268   };
    269 
    270   TLSFuzzer(Protocol protocol, Role role)
    271       : debug_(getenv("BORINGSSL_FUZZER_DEBUG") != nullptr),
    272         protocol_(protocol),
    273         role_(role) {
    274     if (!Init()) {
    275       abort();
    276     }
    277   }
    278 
    279   static void MoveBIOs(SSL *dest, SSL *src) {
    280     BIO *rbio = SSL_get_rbio(src);
    281     BIO_up_ref(rbio);
    282     SSL_set0_rbio(dest, rbio);
    283 
    284     BIO *wbio = SSL_get_wbio(src);
    285     BIO_up_ref(wbio);
    286     SSL_set0_wbio(dest, wbio);
    287 
    288     SSL_set0_rbio(src, nullptr);
    289     SSL_set0_wbio(src, nullptr);
    290   }
    291 
    292   int TestOneInput(const uint8_t *buf, size_t len) {
    293     RAND_reset_for_fuzzing();
    294 
    295     CBS cbs;
    296     CBS_init(&cbs, buf, len);
    297     bssl::UniquePtr<SSL> ssl = SetupTest(&cbs);
    298     if (!ssl) {
    299       if (debug_) {
    300         fprintf(stderr, "Error parsing parameters.\n");
    301       }
    302       return 0;
    303     }
    304 
    305     if (role_ == kClient) {
    306       SSL_set_renegotiate_mode(ssl.get(), ssl_renegotiate_freely);
    307       SSL_set_tlsext_host_name(ssl.get(), "hostname");
    308     }
    309 
    310     // ssl_handoff may or may not be used.
    311     bssl::UniquePtr<SSL> ssl_handoff(SSL_new(ctx_.get()));
    312     bssl::UniquePtr<SSL> ssl_handback(SSL_new(ctx_.get()));
    313     SSL_set_accept_state(ssl_handoff.get());
    314 
    315     SSL_set0_rbio(ssl.get(), MakeBIO(CBS_data(&cbs), CBS_len(&cbs)).release());
    316     SSL_set0_wbio(ssl.get(), BIO_new(BIO_s_mem()));
    317 
    318     SSL *ssl_handshake = ssl.get();
    319     bool handshake_successful = false;
    320     bool handback_successful = false;
    321     for (;;) {
    322       int ret = SSL_do_handshake(ssl_handshake);
    323       if (ret < 0 && SSL_get_error(ssl_handshake, ret) == SSL_ERROR_HANDOFF) {
    324         MoveBIOs(ssl_handoff.get(), ssl.get());
    325         // Ordinarily we would call SSL_serialize_handoff(ssl.get().  But for
    326         // fuzzing, use the serialized handoff that's getting fuzzed.
    327         if (!SSL_apply_handoff(ssl_handoff.get(), handoff_)) {
    328           if (debug_) {
    329             fprintf(stderr, "Handoff failed.\n");
    330           }
    331           break;
    332         }
    333         ssl_handshake = ssl_handoff.get();
    334       } else if (ret < 0 &&
    335                  SSL_get_error(ssl_handshake, ret) == SSL_ERROR_HANDBACK) {
    336         MoveBIOs(ssl_handback.get(), ssl_handoff.get());
    337         if (!SSL_apply_handback(ssl_handback.get(), handback_)) {
    338           if (debug_) {
    339             fprintf(stderr, "Handback failed.\n");
    340           }
    341           break;
    342         }
    343         handback_successful = true;
    344         ssl_handshake = ssl_handback.get();
    345       } else {
    346         handshake_successful = ret == 1;
    347         break;
    348       }
    349     }
    350 
    351     if (debug_) {
    352       if (!handshake_successful) {
    353         fprintf(stderr, "Handshake failed.\n");
    354       } else if (handback_successful) {
    355         fprintf(stderr, "Handback successful.\n");
    356       }
    357     }
    358 
    359     if (handshake_successful) {
    360       // Keep reading application data until error or EOF.
    361       uint8_t tmp[1024];
    362       for (;;) {
    363         if (SSL_read(ssl_handshake, tmp, sizeof(tmp)) <= 0) {
    364           break;
    365         }
    366       }
    367     }
    368 
    369     if (debug_) {
    370       ERR_print_errors_fp(stderr);
    371     }
    372     ERR_clear_error();
    373     return 0;
    374   }
    375 
    376  private:
    377   // Init initializes |ctx_| with settings common to all inputs.
    378   bool Init() {
    379     ctx_.reset(SSL_CTX_new(protocol_ == kDTLS ? DTLS_method() : TLS_method()));
    380     bssl::UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
    381     bssl::UniquePtr<RSA> privkey(RSA_private_key_from_bytes(
    382         kRSAPrivateKeyDER, sizeof(kRSAPrivateKeyDER)));
    383     if (!ctx_ || !privkey || !pkey ||
    384         !EVP_PKEY_set1_RSA(pkey.get(), privkey.get()) ||
    385         !SSL_CTX_use_PrivateKey(ctx_.get(), pkey.get())) {
    386       return false;
    387     }
    388 
    389     const uint8_t *bufp = kCertificateDER;
    390     bssl::UniquePtr<X509> cert(d2i_X509(NULL, &bufp, sizeof(kCertificateDER)));
    391     if (!cert ||
    392         !SSL_CTX_use_certificate(ctx_.get(), cert.get()) ||
    393         !SSL_CTX_set_ocsp_response(ctx_.get(), kOCSPResponse,
    394                                    sizeof(kOCSPResponse)) ||
    395         !SSL_CTX_set_signed_cert_timestamp_list(ctx_.get(), kSCT,
    396                                                 sizeof(kSCT))) {
    397       return false;
    398     }
    399 
    400     // When accepting peer certificates, allow any certificate.
    401     SSL_CTX_set_cert_verify_callback(
    402         ctx_.get(),
    403         [](X509_STORE_CTX *store_ctx, void *arg) -> int { return 1; }, nullptr);
    404 
    405     SSL_CTX_enable_signed_cert_timestamps(ctx_.get());
    406     SSL_CTX_enable_ocsp_stapling(ctx_.get());
    407 
    408     // Enable versions and ciphers that are off by default.
    409     if (!SSL_CTX_set_strict_cipher_list(ctx_.get(), "ALL:NULL-SHA")) {
    410       return false;
    411     }
    412     if (protocol_ == kTLS &&
    413         !SSL_CTX_set_max_proto_version(ctx_.get(), TLS1_3_VERSION)) {
    414       return false;
    415     }
    416 
    417     static const int kCurves[] = {NID_CECPQ2, NID_X25519, NID_X9_62_prime256v1,
    418                                   NID_secp384r1, NID_secp521r1};
    419     if (!SSL_CTX_set1_curves(ctx_.get(), kCurves,
    420                              OPENSSL_ARRAY_SIZE(kCurves))) {
    421       return false;
    422     }
    423 
    424     SSL_CTX_set_early_data_enabled(ctx_.get(), 1);
    425 
    426     SSL_CTX_set_next_proto_select_cb(ctx_.get(), NPNSelectCallback, nullptr);
    427     SSL_CTX_set_next_protos_advertised_cb(ctx_.get(), NPNAdvertiseCallback,
    428                                           nullptr);
    429 
    430     SSL_CTX_set_alpn_select_cb(ctx_.get(), ALPNSelectCallback, nullptr);
    431     if (SSL_CTX_set_alpn_protos(ctx_.get(), kALPNProtocols,
    432                                 sizeof(kALPNProtocols)) != 0) {
    433       return false;
    434     }
    435 
    436     CBS cbs;
    437     CBS_init(&cbs, kP256KeyPKCS8, sizeof(kP256KeyPKCS8));
    438     pkey.reset(EVP_parse_private_key(&cbs));
    439     if (!pkey || !SSL_CTX_set1_tls_channel_id(ctx_.get(), pkey.get())) {
    440       return false;
    441     }
    442     SSL_CTX_set_tls_channel_id_enabled(ctx_.get(), 1);
    443 
    444     return true;
    445   }
    446 
    447   // SetupTest parses parameters from |cbs| and returns a newly-configured |SSL|
    448   // object or nullptr on error. On success, the caller should feed the
    449   // remaining input in |cbs| to the SSL stack.
    450   bssl::UniquePtr<SSL> SetupTest(CBS *cbs) {
    451     // |ctx| is shared between runs, so we must clear any modifications to it
    452     // made later on in this function.
    453     SSL_CTX_flush_sessions(ctx_.get(), 0);
    454     handoff_ = {};
    455     handback_ = {};
    456 
    457     bssl::UniquePtr<SSL> ssl(SSL_new(ctx_.get()));
    458     if (role_ == kServer) {
    459       SSL_set_accept_state(ssl.get());
    460     } else {
    461       SSL_set_connect_state(ssl.get());
    462     }
    463 
    464     for (;;) {
    465       uint16_t tag;
    466       if (!CBS_get_u16(cbs, &tag)) {
    467         return nullptr;
    468       }
    469       switch (tag) {
    470         case kDataTag:
    471           return ssl;
    472 
    473         case kSessionTag: {
    474           CBS data;
    475           if (!CBS_get_u24_length_prefixed(cbs, &data)) {
    476             return nullptr;
    477           }
    478           bssl::UniquePtr<SSL_SESSION> session(SSL_SESSION_from_bytes(
    479               CBS_data(&data), CBS_len(&data), ctx_.get()));
    480           if (!session) {
    481             return nullptr;
    482           }
    483 
    484           if (role_ == kServer) {
    485             SSL_CTX_add_session(ctx_.get(), session.get());
    486           } else {
    487             SSL_set_session(ssl.get(), session.get());
    488           }
    489           break;
    490         }
    491 
    492         case kRequestClientCert:
    493           if (role_ == kClient) {
    494             return nullptr;
    495           }
    496           SSL_set_verify(ssl.get(), SSL_VERIFY_PEER, nullptr);
    497           break;
    498 
    499         case kHandoffTag: {
    500           CBS handoff;
    501           if (!CBS_get_u24_length_prefixed(cbs, &handoff)) {
    502             return nullptr;
    503           }
    504           handoff_.CopyFrom(handoff);
    505           bssl::SSL_set_handoff_mode(ssl.get(), 1);
    506           break;
    507         }
    508 
    509         case kHandbackTag: {
    510           CBS handback;
    511           if (!CBS_get_u24_length_prefixed(cbs, &handback)) {
    512             return nullptr;
    513           }
    514           handback_.CopyFrom(handback);
    515           bssl::SSL_set_handoff_mode(ssl.get(), 1);
    516           break;
    517         }
    518 
    519         default:
    520           return nullptr;
    521       }
    522     }
    523   }
    524 
    525   struct BIOData {
    526     Protocol protocol;
    527     CBS cbs;
    528   };
    529 
    530   bssl::UniquePtr<BIO> MakeBIO(const uint8_t *in, size_t len) {
    531     BIOData *b = new BIOData;
    532     b->protocol = protocol_;
    533     CBS_init(&b->cbs, in, len);
    534 
    535     bssl::UniquePtr<BIO> bio(BIO_new(&kBIOMethod));
    536     bio->init = 1;
    537     bio->ptr = b;
    538     return bio;
    539   }
    540 
    541   static int BIORead(BIO *bio, char *out, int len) {
    542     assert(bio->method == &kBIOMethod);
    543     BIOData *b = reinterpret_cast<BIOData *>(bio->ptr);
    544     if (b->protocol == kTLS) {
    545       len = std::min(static_cast<size_t>(len), CBS_len(&b->cbs));
    546       memcpy(out, CBS_data(&b->cbs), len);
    547       CBS_skip(&b->cbs, len);
    548       return len;
    549     }
    550 
    551     // Preserve packet boundaries for DTLS.
    552     CBS packet;
    553     if (!CBS_get_u24_length_prefixed(&b->cbs, &packet)) {
    554       return -1;
    555     }
    556     len = std::min(static_cast<size_t>(len), CBS_len(&packet));
    557     memcpy(out, CBS_data(&packet), len);
    558     return len;
    559   }
    560 
    561   static int BIODestroy(BIO *bio) {
    562     assert(bio->method == &kBIOMethod);
    563     BIOData *b = reinterpret_cast<BIOData *>(bio->ptr);
    564     delete b;
    565     return 1;
    566   }
    567 
    568   static const BIO_METHOD kBIOMethod;
    569 
    570   bool debug_;
    571   Protocol protocol_;
    572   Role role_;
    573   bssl::UniquePtr<SSL_CTX> ctx_;
    574   bssl::Array<uint8_t> handoff_, handback_;
    575 };
    576 
    577 const BIO_METHOD TLSFuzzer::kBIOMethod = {
    578     0,        // type
    579     nullptr,  // name
    580     nullptr,  // bwrite
    581     TLSFuzzer::BIORead,
    582     nullptr,  // bputs
    583     nullptr,  // bgets
    584     nullptr,  // ctrl
    585     nullptr,  // create
    586     TLSFuzzer::BIODestroy,
    587     nullptr,  // callback_ctrl
    588 };
    589 
    590 }  // namespace
    591 
    592 
    593 #endif  // HEADER_SSL_TEST_FUZZER
    594