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| 1 /* bio_ndef.c */ | |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 3 * project. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * | |
| 15 * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 * notice, this list of conditions and the following disclaimer in | |
| 17 * the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * | |
| 20 * 3. All advertising materials mentioning features or use of this | |
| 21 * software must display the following acknowledgment: | |
| 22 * "This product includes software developed by the OpenSSL Project | |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 24 * | |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 26 * endorse or promote products derived from this software without | |
| 27 * prior written permission. For written permission, please contact | |
| 28 * licensing@OpenSSL.org. | |
| 29 * | |
| 30 * 5. Products derived from this software may not be called "OpenSSL" | |
| 31 * nor may "OpenSSL" appear in their names without prior written | |
| 32 * permission of the OpenSSL Project. | |
| 33 * | |
| 34 * 6. Redistributions of any form whatsoever must retain the following | |
| 35 * acknowledgment: | |
| 36 * "This product includes software developed by the OpenSSL Project | |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 38 * | |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 51 * ==================================================================== | |
| 52 * | |
| 53 */ | |
| 54 | |
| 55 #include <openssl/asn1.h> | |
| 56 #include <openssl/asn1t.h> | |
| 57 #include <openssl/bio.h> | |
| 58 #include <openssl/err.h> | |
| 59 | |
| 60 #include <stdio.h> | |
| 61 | |
| 62 /* Experimental NDEF ASN1 BIO support routines */ | |
| 63 | |
| 64 /* The usage is quite simple, initialize an ASN1 structure, | |
| 65 * get a BIO from it then any data written through the BIO | |
| 66 * will end up translated to approptiate format on the fly. | |
| 67 * The data is streamed out and does *not* need to be | |
| 68 * all held in memory at once. | |
| 69 * | |
| 70 * When the BIO is flushed the output is finalized and any | |
| 71 * signatures etc written out. | |
| 72 * | |
| 73 * The BIO is a 'proper' BIO and can handle non blocking I/O | |
| 74 * correctly. | |
| 75 * | |
| 76 * The usage is simple. The implementation is *not*... | |
| 77 */ | |
| 78 | |
| 79 /* BIO support data stored in the ASN1 BIO ex_arg */ | |
| 80 | |
| 81 typedef struct ndef_aux_st | |
| 82 { | |
| 83 /* ASN1 structure this BIO refers to */ | |
| 84 ASN1_VALUE *val; | |
| 85 const ASN1_ITEM *it; | |
| 86 /* Top of the BIO chain */ | |
| 87 BIO *ndef_bio; | |
| 88 /* Output BIO */ | |
| 89 BIO *out; | |
| 90 /* Boundary where content is inserted */ | |
| 91 unsigned char **boundary; | |
| 92 /* DER buffer start */ | |
| 93 unsigned char *derbuf; | |
| 94 } NDEF_SUPPORT; | |
| 95 | |
| 96 static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg); | |
| 97 static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
; | |
| 98 static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg); | |
| 99 static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
; | |
| 100 | |
| 101 BIO *BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it) | |
| 102 { | |
| 103 NDEF_SUPPORT *ndef_aux = NULL; | |
| 104 BIO *asn_bio = NULL; | |
| 105 const ASN1_AUX *aux = it->funcs; | |
| 106 ASN1_STREAM_ARG sarg; | |
| 107 | |
| 108 if (!aux || !aux->asn1_cb) | |
| 109 { | |
| 110 ASN1err(ASN1_F_BIO_NEW_NDEF, ASN1_R_STREAMING_NOT_SUPPORTED); | |
| 111 return NULL; | |
| 112 } | |
| 113 ndef_aux = OPENSSL_malloc(sizeof(NDEF_SUPPORT)); | |
| 114 asn_bio = BIO_new(BIO_f_asn1()); | |
| 115 | |
| 116 /* ASN1 bio needs to be next to output BIO */ | |
| 117 | |
| 118 out = BIO_push(asn_bio, out); | |
| 119 | |
| 120 if (!ndef_aux || !asn_bio || !out) | |
| 121 goto err; | |
| 122 | |
| 123 BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free); | |
| 124 BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free); | |
| 125 | |
| 126 /* Now let callback prepend any digest, cipher etc BIOs | |
| 127 * ASN1 structure needs. | |
| 128 */ | |
| 129 | |
| 130 sarg.out = out; | |
| 131 sarg.ndef_bio = NULL; | |
| 132 sarg.boundary = NULL; | |
| 133 | |
| 134 if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0) | |
| 135 goto err; | |
| 136 | |
| 137 ndef_aux->val = val; | |
| 138 ndef_aux->it = it; | |
| 139 ndef_aux->ndef_bio = sarg.ndef_bio; | |
| 140 ndef_aux->boundary = sarg.boundary; | |
| 141 ndef_aux->out = out; | |
| 142 | |
| 143 BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux); | |
| 144 | |
| 145 return sarg.ndef_bio; | |
| 146 | |
| 147 err: | |
| 148 if (asn_bio) | |
| 149 BIO_free(asn_bio); | |
| 150 if (ndef_aux) | |
| 151 OPENSSL_free(ndef_aux); | |
| 152 return NULL; | |
| 153 } | |
| 154 | |
| 155 static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg) | |
| 156 { | |
| 157 NDEF_SUPPORT *ndef_aux; | |
| 158 unsigned char *p; | |
| 159 int derlen; | |
| 160 | |
| 161 if (!parg) | |
| 162 return 0; | |
| 163 | |
| 164 ndef_aux = *(NDEF_SUPPORT **)parg; | |
| 165 | |
| 166 derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it); | |
| 167 p = OPENSSL_malloc(derlen); | |
| 168 ndef_aux->derbuf = p; | |
| 169 *pbuf = p; | |
| 170 derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it); | |
| 171 | |
| 172 if (!*ndef_aux->boundary) | |
| 173 return 0; | |
| 174 | |
| 175 *plen = *ndef_aux->boundary - *pbuf; | |
| 176 | |
| 177 return 1; | |
| 178 } | |
| 179 | |
| 180 static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg) | |
| 181 { | |
| 182 NDEF_SUPPORT *ndef_aux; | |
| 183 | |
| 184 if (!parg) | |
| 185 return 0; | |
| 186 | |
| 187 ndef_aux = *(NDEF_SUPPORT **)parg; | |
| 188 | |
| 189 if (ndef_aux->derbuf) | |
| 190 OPENSSL_free(ndef_aux->derbuf); | |
| 191 | |
| 192 ndef_aux->derbuf = NULL; | |
| 193 *pbuf = NULL; | |
| 194 *plen = 0; | |
| 195 return 1; | |
| 196 } | |
| 197 | |
| 198 static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg) | |
| 199 { | |
| 200 NDEF_SUPPORT **pndef_aux = (NDEF_SUPPORT **)parg; | |
| 201 if (!ndef_prefix_free(b, pbuf, plen, parg)) | |
| 202 return 0; | |
| 203 OPENSSL_free(*pndef_aux); | |
| 204 *pndef_aux = NULL; | |
| 205 return 1; | |
| 206 } | |
| 207 | |
| 208 static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg) | |
| 209 { | |
| 210 NDEF_SUPPORT *ndef_aux; | |
| 211 unsigned char *p; | |
| 212 int derlen; | |
| 213 const ASN1_AUX *aux; | |
| 214 ASN1_STREAM_ARG sarg; | |
| 215 | |
| 216 if (!parg) | |
| 217 return 0; | |
| 218 | |
| 219 ndef_aux = *(NDEF_SUPPORT **)parg; | |
| 220 | |
| 221 aux = ndef_aux->it->funcs; | |
| 222 | |
| 223 /* Finalize structures */ | |
| 224 sarg.ndef_bio = ndef_aux->ndef_bio; | |
| 225 sarg.out = ndef_aux->out; | |
| 226 sarg.boundary = ndef_aux->boundary; | |
| 227 if (aux->asn1_cb(ASN1_OP_STREAM_POST, | |
| 228 &ndef_aux->val, ndef_aux->it, &sarg) <= 0) | |
| 229 return 0; | |
| 230 | |
| 231 derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it); | |
| 232 p = OPENSSL_malloc(derlen); | |
| 233 ndef_aux->derbuf = p; | |
| 234 *pbuf = p; | |
| 235 derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it); | |
| 236 | |
| 237 if (!*ndef_aux->boundary) | |
| 238 return 0; | |
| 239 *pbuf = *ndef_aux->boundary; | |
| 240 *plen = derlen - (*ndef_aux->boundary - ndef_aux->derbuf); | |
| 241 | |
| 242 return 1; | |
| 243 } | |
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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