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c38bb727 BL |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the OpenSSL licenses, (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * https://www.openssl.org/source/license.html | |
8 | * or in the file LICENSE in the source distribution. | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Fuzz ASN.1 parsing for various data structures. Specify which on the | |
13 | * command line: | |
14 | * | |
15 | * asn1 <data structure> | |
16 | */ | |
17 | ||
18 | #include <stdio.h> | |
19 | #include <string.h> | |
20 | #include <openssl/asn1.h> | |
21 | #include <openssl/asn1t.h> | |
22 | #include <openssl/ec.h> | |
23 | #include <openssl/ocsp.h> | |
24 | #include <openssl/pkcs12.h> | |
25 | #include <openssl/ts.h> | |
26 | #include <openssl/x509v3.h> | |
27 | #include "fuzzer.h" | |
28 | ||
90d28f05 BL |
29 | static ASN1_ITEM_EXP *item_type[] = { |
30 | ASN1_ITEM_ref(ASN1_SEQUENCE), | |
31 | ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS), | |
32 | ASN1_ITEM_ref(BIGNUM), | |
d20841c4 | 33 | #ifndef OPENSSL_NO_EC |
90d28f05 BL |
34 | ASN1_ITEM_ref(ECPARAMETERS), |
35 | ASN1_ITEM_ref(ECPKPARAMETERS), | |
d20841c4 | 36 | #endif |
90d28f05 BL |
37 | ASN1_ITEM_ref(GENERAL_NAME), |
38 | ASN1_ITEM_ref(GENERAL_SUBTREE), | |
39 | ASN1_ITEM_ref(NAME_CONSTRAINTS), | |
40 | ASN1_ITEM_ref(OCSP_BASICRESP), | |
41 | ASN1_ITEM_ref(OCSP_RESPONSE), | |
42 | ASN1_ITEM_ref(PKCS12), | |
43 | ASN1_ITEM_ref(PKCS12_AUTHSAFES), | |
44 | ASN1_ITEM_ref(PKCS12_SAFEBAGS), | |
45 | ASN1_ITEM_ref(PKCS7), | |
46 | ASN1_ITEM_ref(PKCS7_ATTR_SIGN), | |
47 | ASN1_ITEM_ref(PKCS7_ATTR_VERIFY), | |
48 | ASN1_ITEM_ref(PKCS7_DIGEST), | |
49 | ASN1_ITEM_ref(PKCS7_ENC_CONTENT), | |
50 | ASN1_ITEM_ref(PKCS7_ENCRYPT), | |
51 | ASN1_ITEM_ref(PKCS7_ENVELOPE), | |
52 | ASN1_ITEM_ref(PKCS7_RECIP_INFO), | |
53 | ASN1_ITEM_ref(PKCS7_SIGN_ENVELOPE), | |
54 | ASN1_ITEM_ref(PKCS7_SIGNED), | |
55 | ASN1_ITEM_ref(PKCS7_SIGNER_INFO), | |
56 | ASN1_ITEM_ref(POLICY_CONSTRAINTS), | |
57 | ASN1_ITEM_ref(POLICY_MAPPINGS), | |
58 | ASN1_ITEM_ref(SXNET), | |
59 | /*ASN1_ITEM_ref(TS_RESP), want to do this, but type is hidden, however d2i exists... */ | |
60 | ASN1_ITEM_ref(X509), | |
61 | ASN1_ITEM_ref(X509_CRL), | |
e298cb10 BL |
62 | NULL |
63 | }; | |
c38bb727 | 64 | |
90d28f05 BL |
65 | int FuzzerInitialize(int *argc, char ***argv) { |
66 | return 1; | |
67 | } | |
68 | ||
f59d0131 | 69 | int FuzzerTestOneInput(const uint8_t *buf, size_t len) { |
90d28f05 BL |
70 | int n; |
71 | ||
e10aeee1 KR |
72 | ASN1_PCTX *pctx = ASN1_PCTX_new(); |
73 | ||
74 | ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT | | |
75 | ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF | | |
76 | ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME); | |
77 | ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT | | |
78 | ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL); | |
79 | ||
90d28f05 | 80 | for (n = 0; item_type[n] != NULL; ++n) { |
e298cb10 | 81 | const uint8_t *b = buf; |
e10aeee1 | 82 | unsigned char *der = NULL; |
90d28f05 BL |
83 | const ASN1_ITEM *i = ASN1_ITEM_ptr(item_type[n]); |
84 | ASN1_VALUE *o = ASN1_item_d2i(NULL, &b, len, i); | |
e10aeee1 KR |
85 | |
86 | if (o != NULL) { | |
87 | BIO *bio = BIO_new(BIO_s_null()); | |
88 | ASN1_item_print(bio, o, 4, i, pctx); | |
89 | BIO_free(bio); | |
90 | ||
91 | ASN1_item_i2d(o, &der, i); | |
92 | OPENSSL_free(der); | |
93 | ||
94 | ASN1_item_free(o, i); | |
95 | } | |
e298cb10 | 96 | } |
e10aeee1 KR |
97 | |
98 | ASN1_PCTX_free(pctx); | |
99 | ||
c38bb727 BL |
100 | return 0; |
101 | } |