OpenCoverage

bio_md.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/evp/bio_md.c
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1/*-
2 * Copyright 1995-2016 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 <stdio.h>-
11#include <errno.h>-
12#include "internal/cryptlib.h"-
13#include <openssl/buffer.h>-
14#include <openssl/evp.h>-
15#include "internal/evp_int.h"-
16#include "evp_locl.h"-
17#include "internal/bio.h"-
18-
19/*-
20 * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest-
21 */-
22-
23static int md_write(BIO *h, char const *buf, int num);-
24static int md_read(BIO *h, char *buf, int size);-
25static int md_gets(BIO *h, char *str, int size);-
26static long md_ctrl(BIO *h, int cmd, long arg1, void *arg2);-
27static int md_new(BIO *h);-
28static int md_free(BIO *data);-
29static long md_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);-
30-
31static const BIO_METHOD methods_md = {-
32 BIO_TYPE_MD,-
33 "message digest",-
34 /* TODO: Convert to new style write function */-
35 bwrite_conv,-
36 md_write,-
37 /* TODO: Convert to new style read function */-
38 bread_conv,-
39 md_read,-
40 NULL, /* md_puts, */-
41 md_gets,-
42 md_ctrl,-
43 md_new,-
44 md_free,-
45 md_callback_ctrl,-
46};-
47-
48const BIO_METHOD *BIO_f_md(void)-
49{-
50 return &methods_md;
executed 88 times by 1 test: return &methods_md;
Executed by:
  • libcrypto.so.1.1
88
51}-
52-
53static int md_new(BIO *bi)-
54{-
55 EVP_MD_CTX *ctx;-
56-
57 ctx = EVP_MD_CTX_new();-
58 if (ctx == NULL)
ctx == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 88 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-88
59 return 0;
never executed: return 0;
0
60-
61 BIO_set_init(bi, 1);-
62 BIO_set_data(bi, ctx);-
63-
64 return 1;
executed 88 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
88
65}-
66-
67static int md_free(BIO *a)-
68{-
69 if (a == NULL)
a == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 88 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-88
70 return 0;
never executed: return 0;
0
71 EVP_MD_CTX_free(BIO_get_data(a));-
72 BIO_set_data(a, NULL);-
73 BIO_set_init(a, 0);-
74-
75 return 1;
executed 88 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
88
76}-
77-
78static int md_read(BIO *b, char *out, int outl)-
79{-
80 int ret = 0;-
81 EVP_MD_CTX *ctx;-
82 BIO *next;-
83-
84 if (out == NULL)
out == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 76 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-76
85 return 0;
never executed: return 0;
0
86-
87 ctx = BIO_get_data(b);-
88 next = BIO_next(b);-
89-
90 if ((ctx == NULL) || (next == NULL))
(ctx == ((void *)0) )Description
TRUEnever evaluated
FALSEevaluated 76 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
(next == ((void *)0) )Description
TRUEnever evaluated
FALSEevaluated 76 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-76
91 return 0;
never executed: return 0;
0
92-
93 ret = BIO_read(next, out, outl);-
94 if (BIO_get_init(b)) {
BIO_get_init(b)Description
TRUEevaluated 76 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-76
95 if (ret > 0) {
ret > 0Description
TRUEevaluated 38 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 38 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
38
96 if (EVP_DigestUpdate(ctx, (unsigned char *)out,
EVP_DigestUpda... int)ret) <= 0Description
TRUEnever evaluated
FALSEevaluated 38 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-38
97 (unsigned int)ret) <= 0)
EVP_DigestUpda... int)ret) <= 0Description
TRUEnever evaluated
FALSEevaluated 38 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-38
98 return -1;
never executed: return -1;
0
99 }
executed 38 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
38
100 }
executed 76 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
76
101 BIO_clear_retry_flags(b);-
102 BIO_copy_next_retry(b);-
103 return ret;
executed 76 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
76
104}-
105-
106static int md_write(BIO *b, const char *in, int inl)-
107{-
108 int ret = 0;-
109 EVP_MD_CTX *ctx;-
110 BIO *next;-
111-
112 if ((in == NULL) || (inl <= 0))
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
(inl <= 0)Description
TRUEnever evaluated
FALSEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-50
113 return 0;
never executed: return 0;
0
114-
115 ctx = BIO_get_data(b);-
116 next = BIO_next(b);-
117 if ((ctx != NULL) && (next != NULL))
(ctx != ((void *)0) )Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
(next != ((void *)0) )Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-50
118 ret = BIO_write(next, in, inl);
executed 50 times by 1 test: ret = BIO_write(next, in, inl);
Executed by:
  • libcrypto.so.1.1
50
119-
120 if (BIO_get_init(b)) {
BIO_get_init(b)Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-50
121 if (ret > 0) {
ret > 0Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-50
122 if (!EVP_DigestUpdate(ctx, (const unsigned char *)in,
!EVP_DigestUpd...igned int)ret)Description
TRUEnever evaluated
FALSEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-50
123 (unsigned int)ret)) {
!EVP_DigestUpd...igned int)ret)Description
TRUEnever evaluated
FALSEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-50
124 BIO_clear_retry_flags(b);-
125 return 0;
never executed: return 0;
0
126 }-
127 }
executed 50 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
50
128 }
executed 50 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
50
129 if (next != NULL) {
next != ((void *)0)Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-50
130 BIO_clear_retry_flags(b);-
131 BIO_copy_next_retry(b);-
132 }
executed 50 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
50
133 return ret;
executed 50 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
50
134}-
135-
136static long md_ctrl(BIO *b, int cmd, long num, void *ptr)-
137{-
138 EVP_MD_CTX *ctx, *dctx, **pctx;-
139 const EVP_MD **ppmd;-
140 EVP_MD *md;-
141 long ret = 1;-
142 BIO *dbio, *next;-
143-
144-
145 ctx = BIO_get_data(b);-
146 next = BIO_next(b);-
147-
148 switch (cmd) {-
149 case BIO_CTRL_RESET:
executed 5 times by 1 test: case 1:
Executed by:
  • libcrypto.so.1.1
5
150 if (BIO_get_init(b))
BIO_get_init(b)Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-5
151 ret = EVP_DigestInit_ex(ctx, ctx->digest, NULL);
executed 5 times by 1 test: ret = EVP_DigestInit_ex(ctx, ctx->digest, ((void *)0) );
Executed by:
  • libcrypto.so.1.1
5
152 else-
153 ret = 0;
never executed: ret = 0;
0
154 if (ret > 0)
ret > 0Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-5
155 ret = BIO_ctrl(next, cmd, num, ptr);
executed 5 times by 1 test: ret = BIO_ctrl(next, cmd, num, ptr);
Executed by:
  • libcrypto.so.1.1
5
156 break;
executed 5 times by 1 test: break;
Executed by:
  • libcrypto.so.1.1
5
157 case BIO_C_GET_MD:
never executed: case 112:
0
158 if (BIO_get_init(b)) {
BIO_get_init(b)Description
TRUEnever evaluated
FALSEnever evaluated
0
159 ppmd = ptr;-
160 *ppmd = ctx->digest;-
161 } else
never executed: end of block
0
162 ret = 0;
never executed: ret = 0;
0
163 break;
never executed: break;
0
164 case BIO_C_GET_MD_CTX:
executed 180 times by 1 test: case 120:
Executed by:
  • libcrypto.so.1.1
180
165 pctx = ptr;-
166 *pctx = ctx;-
167 BIO_set_init(b, 1);-
168 break;
executed 180 times by 1 test: break;
Executed by:
  • libcrypto.so.1.1
180
169 case BIO_C_SET_MD_CTX:
never executed: case 148:
0
170 if (BIO_get_init(b))
BIO_get_init(b)Description
TRUEnever evaluated
FALSEnever evaluated
0
171 BIO_set_data(b, ptr);
never executed: BIO_set_data(b, ptr);
0
172 else-
173 ret = 0;
never executed: ret = 0;
0
174 break;
never executed: break;
0
175 case BIO_C_DO_STATE_MACHINE:
never executed: case 101:
0
176 BIO_clear_retry_flags(b);-
177 ret = BIO_ctrl(next, cmd, num, ptr);-
178 BIO_copy_next_retry(b);-
179 break;
never executed: break;
0
180-
181 case BIO_C_SET_MD:
executed 83 times by 1 test: case 111:
Executed by:
  • libcrypto.so.1.1
83
182 md = ptr;-
183 ret = EVP_DigestInit_ex(ctx, md, NULL);-
184 if (ret > 0)
ret > 0Description
TRUEevaluated 83 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-83
185 BIO_set_init(b, 1);
executed 83 times by 1 test: BIO_set_init(b, 1);
Executed by:
  • libcrypto.so.1.1
83
186 break;
executed 83 times by 1 test: break;
Executed by:
  • libcrypto.so.1.1
83
187 case BIO_CTRL_DUP:
never executed: case 12:
0
188 dbio = ptr;-
189 dctx = BIO_get_data(dbio);-
190 if (!EVP_MD_CTX_copy_ex(dctx, ctx))
!EVP_MD_CTX_copy_ex(dctx, ctx)Description
TRUEnever evaluated
FALSEnever evaluated
0
191 return 0;
never executed: return 0;
0
192 BIO_set_init(b, 1);-
193 break;
never executed: break;
0
194 default:
executed 308 times by 1 test: default:
Executed by:
  • libcrypto.so.1.1
308
195 ret = BIO_ctrl(next, cmd, num, ptr);-
196 break;
executed 308 times by 1 test: break;
Executed by:
  • libcrypto.so.1.1
308
197 }-
198 return ret;
executed 576 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
576
199}-
200-
201static long md_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)-
202{-
203 long ret = 1;-
204 BIO *next;-
205-
206 next = BIO_next(b);-
207-
208 if (next == NULL)
next == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
209 return 0;
never executed: return 0;
0
210-
211 switch (cmd) {-
212 default:
never executed: default:
0
213 ret = BIO_callback_ctrl(next, cmd, fp);-
214 break;
never executed: break;
0
215 }-
216 return ret;
never executed: return ret;
0
217}-
218-
219static int md_gets(BIO *bp, char *buf, int size)-
220{-
221 EVP_MD_CTX *ctx;-
222 unsigned int ret;-
223-
224 ctx = BIO_get_data(bp);-
225-
226 if (size < ctx->digest->md_size)
size < ctx->digest->md_sizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
227 return 0;
never executed: return 0;
0
228-
229 if (EVP_DigestFinal_ex(ctx, (unsigned char *)buf, &ret) <= 0)
EVP_DigestFina...uf, &ret) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
230 return -1;
never executed: return -1;
0
231-
232 return (int)ret;
never executed: return (int)ret;
0
233}-
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