OpenCoverage

ct_b64.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/ct/ct_b64.c
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1/*-
2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.-
3 *-
4 * Licensed under the OpenSSL license (the "License"). You may not use-
5 * this file except in compliance with the License. You can obtain a copy-
6 * in the file LICENSE in the source distribution or at-
7 * https://www.openssl.org/source/license.html-
8 */-
9-
10#include <limits.h>-
11#include <string.h>-
12-
13#include <openssl/ct.h>-
14#include <openssl/err.h>-
15#include <openssl/evp.h>-
16-
17#include "ct_locl.h"-
18-
19/*-
20 * Decodes the base64 string |in| into |out|.-
21 * A new string will be malloc'd and assigned to |out|. This will be owned by-
22 * the caller. Do not provide a pre-allocated string in |out|.-
23 */-
24static int ct_base64_decode(const char *in, unsigned char **out)-
25{-
26 size_t inlen = strlen(in);-
27 int outlen, i;-
28 unsigned char *outbuf = NULL;-
29-
30 if (inlen == 0) {
inlen == 0Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 14701 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
1-14701
31 *out = NULL;-
32 return 0;
executed 1 time by 1 test: return 0;
Executed by:
  • libcrypto.so.1.1
1
33 }-
34-
35 outlen = (inlen / 4) * 3;-
36 outbuf = OPENSSL_malloc(outlen);-
37 if (outbuf == NULL) {
outbuf == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 14701 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-14701
38 CTerr(CT_F_CT_BASE64_DECODE, ERR_R_MALLOC_FAILURE);-
39 goto err;
never executed: goto err;
0
40 }-
41-
42 outlen = EVP_DecodeBlock(outbuf, (unsigned char *)in, inlen);-
43 if (outlen < 0) {
outlen < 0Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 14700 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
1-14700
44 CTerr(CT_F_CT_BASE64_DECODE, CT_R_BASE64_DECODE_ERROR);-
45 goto err;
executed 1 time by 1 test: goto err;
Executed by:
  • libcrypto.so.1.1
1
46 }-
47-
48 /* Subtract padding bytes from |outlen|. Any more than 2 is malformed. */-
49 i = 0;-
50 while (in[--inlen] == '=') {
in[--inlen] == '='Description
TRUEevaluated 26132 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 14699 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
14699-26132
51 --outlen;-
52 if (++i > 2)
++i > 2Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 26131 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
1-26131
53 goto err;
executed 1 time by 1 test: goto err;
Executed by:
  • libcrypto.so.1.1
1
54 }
executed 26131 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
26131
55-
56 *out = outbuf;-
57 return outlen;
executed 14699 times by 1 test: return outlen;
Executed by:
  • libcrypto.so.1.1
14699
58err:-
59 OPENSSL_free(outbuf);-
60 return -1;
executed 2 times by 1 test: return -1;
Executed by:
  • libcrypto.so.1.1
2
61}-
62-
63SCT *SCT_new_from_base64(unsigned char version, const char *logid_base64,-
64 ct_log_entry_type_t entry_type, uint64_t timestamp,-
65 const char *extensions_base64,-
66 const char *signature_base64)-
67{-
68 SCT *sct = SCT_new();-
69 unsigned char *dec = NULL;-
70 const unsigned char* p = NULL;-
71 int declen;-
72-
73 if (sct == NULL) {
sct == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
74 CTerr(CT_F_SCT_NEW_FROM_BASE64, ERR_R_MALLOC_FAILURE);-
75 return NULL;
never executed: return ((void *)0) ;
0
76 }-
77-
78 /*-
79 * RFC6962 section 4.1 says we "MUST NOT expect this to be 0", but we-
80 * can only construct SCT versions that have been defined.-
81 */-
82 if (!SCT_set_version(sct, version)) {
!SCT_set_version(sct, version)Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
83 CTerr(CT_F_SCT_NEW_FROM_BASE64, CT_R_SCT_UNSUPPORTED_VERSION);-
84 goto err;
never executed: goto err;
0
85 }-
86-
87 declen = ct_base64_decode(logid_base64, &dec);-
88 if (declen < 0) {
declen < 0Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
89 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);-
90 goto err;
never executed: goto err;
0
91 }-
92 if (!SCT_set0_log_id(sct, dec, declen))
!SCT_set0_log_..., dec, declen)Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
93 goto err;
never executed: goto err;
0
94 dec = NULL;-
95-
96 declen = ct_base64_decode(extensions_base64, &dec);-
97 if (declen < 0) {
declen < 0Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
98 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);-
99 goto err;
never executed: goto err;
0
100 }-
101 SCT_set0_extensions(sct, dec, declen);-
102 dec = NULL;-
103-
104 declen = ct_base64_decode(signature_base64, &dec);-
105 if (declen < 0) {
declen < 0Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
106 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);-
107 goto err;
never executed: goto err;
0
108 }-
109-
110 p = dec;-
111 if (o2i_SCT_signature(sct, &p, declen) <= 0)
o2i_SCT_signat..., declen) <= 0Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
112 goto err;
never executed: goto err;
0
113 OPENSSL_free(dec);-
114 dec = NULL;-
115-
116 SCT_set_timestamp(sct, timestamp);-
117-
118 if (!SCT_set_log_entry_type(sct, entry_type))
!SCT_set_log_e...t, entry_type)Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1
119 goto err;
never executed: goto err;
0
120-
121 return sct;
executed 1 time by 1 test: return sct;
Executed by:
  • libcrypto.so.1.1
1
122-
123 err:-
124 OPENSSL_free(dec);-
125 SCT_free(sct);-
126 return NULL;
never executed: return ((void *)0) ;
0
127}-
128-
129/*-
130 * Allocate, build and returns a new |ct_log| from input |pkey_base64|-
131 * It returns 1 on success,-
132 * 0 on decoding failure, or invalid parameter if any-
133 * -1 on internal (malloc) failure-
134 */-
135int CTLOG_new_from_base64(CTLOG **ct_log, const char *pkey_base64, const char *name)-
136{-
137 unsigned char *pkey_der = NULL;-
138 int pkey_der_len;-
139 const unsigned char *p;-
140 EVP_PKEY *pkey = NULL;-
141-
142 if (ct_log == NULL) {
ct_log == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 14699 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-14699
143 CTerr(CT_F_CTLOG_NEW_FROM_BASE64, ERR_R_PASSED_INVALID_ARGUMENT);-
144 return 0;
never executed: return 0;
0
145 }-
146-
147 pkey_der_len = ct_base64_decode(pkey_base64, &pkey_der);-
148 if (pkey_der_len < 0) {
pkey_der_len < 0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 14697 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
2-14697
149 CTerr(CT_F_CTLOG_NEW_FROM_BASE64, CT_R_LOG_CONF_INVALID_KEY);-
150 return 0;
executed 2 times by 1 test: return 0;
Executed by:
  • libcrypto.so.1.1
2
151 }-
152-
153 p = pkey_der;-
154 pkey = d2i_PUBKEY(NULL, &p, pkey_der_len);-
155 OPENSSL_free(pkey_der);-
156 if (pkey == NULL) {
pkey == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 14697 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-14697
157 CTerr(CT_F_CTLOG_NEW_FROM_BASE64, CT_R_LOG_CONF_INVALID_KEY);-
158 return 0;
never executed: return 0;
0
159 }-
160-
161 *ct_log = CTLOG_new(pkey, name);-
162 if (*ct_log == NULL) {
*ct_log == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 14697 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-14697
163 EVP_PKEY_free(pkey);-
164 return 0;
never executed: return 0;
0
165 }-
166-
167 return 1;
executed 14697 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
14697
168}-
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