| OLD | NEW |
|---|
| (Empty) |
| 1 /* crypto/evp/bio_md.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include <errno.h> | |
| 61 #include "cryptlib.h" | |
| 62 #include <openssl/buffer.h> | |
| 63 #include <openssl/evp.h> | |
| 64 | |
| 65 /* BIO_put and BIO_get both add to the digest, | |
| 66 * BIO_gets returns the digest */ | |
| 67 | |
| 68 static int md_write(BIO *h, char const *buf, int num); | |
| 69 static int md_read(BIO *h, char *buf, int size); | |
| 70 /*static int md_puts(BIO *h, const char *str); */ | |
| 71 static int md_gets(BIO *h, char *str, int size); | |
| 72 static long md_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
| 73 static int md_new(BIO *h); | |
| 74 static int md_free(BIO *data); | |
| 75 static long md_callback_ctrl(BIO *h,int cmd,bio_info_cb *fp); | |
| 76 | |
| 77 static BIO_METHOD methods_md= | |
| 78 { | |
| 79 BIO_TYPE_MD,"message digest", | |
| 80 md_write, | |
| 81 md_read, | |
| 82 NULL, /* md_puts, */ | |
| 83 md_gets, | |
| 84 md_ctrl, | |
| 85 md_new, | |
| 86 md_free, | |
| 87 md_callback_ctrl, | |
| 88 }; | |
| 89 | |
| 90 BIO_METHOD *BIO_f_md(void) | |
| 91 { | |
| 92 return(&methods_md); | |
| 93 } | |
| 94 | |
| 95 static int md_new(BIO *bi) | |
| 96 { | |
| 97 EVP_MD_CTX *ctx; | |
| 98 | |
| 99 ctx=EVP_MD_CTX_create(); | |
| 100 if (ctx == NULL) return(0); | |
| 101 | |
| 102 bi->init=0; | |
| 103 bi->ptr=(char *)ctx; | |
| 104 bi->flags=0; | |
| 105 return(1); | |
| 106 } | |
| 107 | |
| 108 static int md_free(BIO *a) | |
| 109 { | |
| 110 if (a == NULL) return(0); | |
| 111 EVP_MD_CTX_destroy(a->ptr); | |
| 112 a->ptr=NULL; | |
| 113 a->init=0; | |
| 114 a->flags=0; | |
| 115 return(1); | |
| 116 } | |
| 117 | |
| 118 static int md_read(BIO *b, char *out, int outl) | |
| 119 { | |
| 120 int ret=0; | |
| 121 EVP_MD_CTX *ctx; | |
| 122 | |
| 123 if (out == NULL) return(0); | |
| 124 ctx=b->ptr; | |
| 125 | |
| 126 if ((ctx == NULL) || (b->next_bio == NULL)) return(0); | |
| 127 | |
| 128 ret=BIO_read(b->next_bio,out,outl); | |
| 129 if (b->init) | |
| 130 { | |
| 131 if (ret > 0) | |
| 132 { | |
| 133 if (EVP_DigestUpdate(ctx,(unsigned char *)out, | |
| 134 (unsigned int)ret)<=0) return (-1); | |
| 135 } | |
| 136 } | |
| 137 BIO_clear_retry_flags(b); | |
| 138 BIO_copy_next_retry(b); | |
| 139 return(ret); | |
| 140 } | |
| 141 | |
| 142 static int md_write(BIO *b, const char *in, int inl) | |
| 143 { | |
| 144 int ret=0; | |
| 145 EVP_MD_CTX *ctx; | |
| 146 | |
| 147 if ((in == NULL) || (inl <= 0)) return(0); | |
| 148 ctx=b->ptr; | |
| 149 | |
| 150 if ((ctx != NULL) && (b->next_bio != NULL)) | |
| 151 ret=BIO_write(b->next_bio,in,inl); | |
| 152 if (b->init) | |
| 153 { | |
| 154 if (ret > 0) | |
| 155 { | |
| 156 if (!EVP_DigestUpdate(ctx,(const unsigned char *)in, | |
| 157 (unsigned int)ret)) | |
| 158 { | |
| 159 BIO_clear_retry_flags(b); | |
| 160 return 0; | |
| 161 } | |
| 162 } | |
| 163 } | |
| 164 if(b->next_bio != NULL) | |
| 165 { | |
| 166 BIO_clear_retry_flags(b); | |
| 167 BIO_copy_next_retry(b); | |
| 168 } | |
| 169 return(ret); | |
| 170 } | |
| 171 | |
| 172 static long md_ctrl(BIO *b, int cmd, long num, void *ptr) | |
| 173 { | |
| 174 EVP_MD_CTX *ctx,*dctx,**pctx; | |
| 175 const EVP_MD **ppmd; | |
| 176 EVP_MD *md; | |
| 177 long ret=1; | |
| 178 BIO *dbio; | |
| 179 | |
| 180 ctx=b->ptr; | |
| 181 | |
| 182 switch (cmd) | |
| 183 { | |
| 184 case BIO_CTRL_RESET: | |
| 185 if (b->init) | |
| 186 ret = EVP_DigestInit_ex(ctx,ctx->digest, NULL); | |
| 187 else | |
| 188 ret=0; | |
| 189 if (ret > 0) | |
| 190 ret=BIO_ctrl(b->next_bio,cmd,num,ptr); | |
| 191 break; | |
| 192 case BIO_C_GET_MD: | |
| 193 if (b->init) | |
| 194 { | |
| 195 ppmd=ptr; | |
| 196 *ppmd=ctx->digest; | |
| 197 } | |
| 198 else | |
| 199 ret=0; | |
| 200 break; | |
| 201 case BIO_C_GET_MD_CTX: | |
| 202 pctx=ptr; | |
| 203 *pctx=ctx; | |
| 204 b->init = 1; | |
| 205 break; | |
| 206 case BIO_C_SET_MD_CTX: | |
| 207 if (b->init) | |
| 208 b->ptr=ptr; | |
| 209 else | |
| 210 ret=0; | |
| 211 break; | |
| 212 case BIO_C_DO_STATE_MACHINE: | |
| 213 BIO_clear_retry_flags(b); | |
| 214 ret=BIO_ctrl(b->next_bio,cmd,num,ptr); | |
| 215 BIO_copy_next_retry(b); | |
| 216 break; | |
| 217 | |
| 218 case BIO_C_SET_MD: | |
| 219 md=ptr; | |
| 220 ret = EVP_DigestInit_ex(ctx,md, NULL); | |
| 221 if (ret > 0) | |
| 222 b->init=1; | |
| 223 break; | |
| 224 case BIO_CTRL_DUP: | |
| 225 dbio=ptr; | |
| 226 dctx=dbio->ptr; | |
| 227 if (!EVP_MD_CTX_copy_ex(dctx,ctx)) | |
| 228 return 0; | |
| 229 b->init=1; | |
| 230 break; | |
| 231 default: | |
| 232 ret=BIO_ctrl(b->next_bio,cmd,num,ptr); | |
| 233 break; | |
| 234 } | |
| 235 return(ret); | |
| 236 } | |
| 237 | |
| 238 static long md_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) | |
| 239 { | |
| 240 long ret=1; | |
| 241 | |
| 242 if (b->next_bio == NULL) return(0); | |
| 243 switch (cmd) | |
| 244 { | |
| 245 default: | |
| 246 ret=BIO_callback_ctrl(b->next_bio,cmd,fp); | |
| 247 break; | |
| 248 } | |
| 249 return(ret); | |
| 250 } | |
| 251 | |
| 252 static int md_gets(BIO *bp, char *buf, int size) | |
| 253 { | |
| 254 EVP_MD_CTX *ctx; | |
| 255 unsigned int ret; | |
| 256 | |
| 257 | |
| 258 ctx=bp->ptr; | |
| 259 if (size < ctx->digest->md_size) | |
| 260 return(0); | |
| 261 if (EVP_DigestFinal_ex(ctx,(unsigned char *)buf,&ret)<=0) | |
| 262 return -1; | |
| 263 | |
| 264 return((int)ret); | |
| 265 } | |
| 266 | |
| 267 /* | |
| 268 static int md_puts(bp,str) | |
| 269 BIO *bp; | |
| 270 char *str; | |
| 271 { | |
| 272 return(-1); | |
| 273 } | |
| 274 */ | |
| 275 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master