v3_pci.c revision 259065
1231071Sed/* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */ 2231071Sed/* Contributed to the OpenSSL Project 2004 3231071Sed * by Richard Levitte (richard@levitte.org) 4231071Sed */ 5231071Sed/* Copyright (c) 2004 Kungliga Tekniska H�gskolan 6231071Sed * (Royal Institute of Technology, Stockholm, Sweden). 7231071Sed * All rights reserved. 8231071Sed * 9231071Sed * Redistribution and use in source and binary forms, with or without 10231071Sed * modification, are permitted provided that the following conditions 11231071Sed * are met: 12231071Sed * 13231071Sed * 1. Redistributions of source code must retain the above copyright 14231071Sed * notice, this list of conditions and the following disclaimer. 15231071Sed * 16231071Sed * 2. Redistributions in binary form must reproduce the above copyright 17231071Sed * notice, this list of conditions and the following disclaimer in the 18231071Sed * documentation and/or other materials provided with the distribution. 19231071Sed * 20231071Sed * 3. Neither the name of the Institute nor the names of its contributors 21231071Sed * may be used to endorse or promote products derived from this software 22231071Sed * without specific prior written permission. 23231071Sed * 24231071Sed * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 25231071Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26231071Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27231071Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 28231071Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29231071Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30231071Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31231071Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32231071Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33231071Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34231071Sed * SUCH DAMAGE. 35231071Sed */ 36231071Sed 37231071Sed#include <stdio.h> 38231071Sed#include "cryptlib.h" 39231071Sed#include <openssl/conf.h> 40231071Sed#include <openssl/x509v3.h> 41231071Sed 42231071Sedstatic int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext, 43231071Sed BIO *out, int indent); 44231071Sedstatic PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method, 45231071Sed X509V3_CTX *ctx, char *str); 46231071Sed 47231071Sedconst X509V3_EXT_METHOD v3_pci = 48231071Sed { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION), 49231071Sed 0,0,0,0, 50231071Sed 0,0, 51231071Sed NULL, NULL, 52231071Sed (X509V3_EXT_I2R)i2r_pci, 53231071Sed (X509V3_EXT_R2I)r2i_pci, 54231071Sed NULL, 55231071Sed }; 56231071Sed 57231071Sedstatic int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci, 58231071Sed BIO *out, int indent) 59231071Sed { 60231071Sed BIO_printf(out, "%*sPath Length Constraint: ", indent, ""); 61231071Sed if (pci->pcPathLengthConstraint) 62231071Sed i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint); 63231071Sed else 64231071Sed BIO_printf(out, "infinite"); 65231071Sed BIO_puts(out, "\n"); 66231071Sed BIO_printf(out, "%*sPolicy Language: ", indent, ""); 67231071Sed i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage); 68231071Sed BIO_puts(out, "\n"); 69231071Sed if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data) 70231071Sed BIO_printf(out, "%*sPolicy Text: %s\n", indent, "", 71231071Sed pci->proxyPolicy->policy->data); 72231071Sed return 1; 73231071Sed } 74231071Sed 75231071Sedstatic int process_pci_value(CONF_VALUE *val, 76231071Sed ASN1_OBJECT **language, ASN1_INTEGER **pathlen, 77231071Sed ASN1_OCTET_STRING **policy) 78231071Sed { 79231071Sed int free_policy = 0; 80231071Sed 81231071Sed if (strcmp(val->name, "language") == 0) 82231071Sed { 83231071Sed if (*language) 84231071Sed { 85231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED); 86231071Sed X509V3_conf_err(val); 87231071Sed return 0; 88231071Sed } 89231071Sed if (!(*language = OBJ_txt2obj(val->value, 0))) 90231071Sed { 91231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INVALID_OBJECT_IDENTIFIER); 92231071Sed X509V3_conf_err(val); 93231071Sed return 0; 94231071Sed } 95231071Sed } 96231071Sed else if (strcmp(val->name, "pathlen") == 0) 97231071Sed { 98231071Sed if (*pathlen) 99231071Sed { 100231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED); 101231071Sed X509V3_conf_err(val); 102231071Sed return 0; 103231071Sed } 104231071Sed if (!X509V3_get_value_int(val, pathlen)) 105231071Sed { 106231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_PATH_LENGTH); 107231071Sed X509V3_conf_err(val); 108231071Sed return 0; 109231071Sed } 110231071Sed } 111231071Sed else if (strcmp(val->name, "policy") == 0) 112231071Sed { 113231098Sed unsigned char *tmp_data = NULL; 114231071Sed long val_len; 115231098Sed if (!*policy) 116231098Sed { 117231098Sed *policy = ASN1_OCTET_STRING_new(); 118231098Sed if (!*policy) 119231098Sed { 120231098Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE); 121231098Sed X509V3_conf_err(val); 122231098Sed return 0; 123231098Sed } 124231098Sed free_policy = 1; 125231098Sed } 126231098Sed if (strncmp(val->value, "hex:", 4) == 0) 127231071Sed { 128231071Sed unsigned char *tmp_data2 = 129231071Sed string_to_hex(val->value + 4, &val_len); 130231071Sed 131231071Sed if (!tmp_data2) 132231071Sed { 133231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_ILLEGAL_HEX_DIGIT); 134231071Sed X509V3_conf_err(val); 135231071Sed goto err; 136231071Sed } 137231071Sed 138231071Sed tmp_data = OPENSSL_realloc((*policy)->data, 139231071Sed (*policy)->length + val_len + 1); 140231071Sed if (tmp_data) 141231071Sed { 142231071Sed (*policy)->data = tmp_data; 143231071Sed memcpy(&(*policy)->data[(*policy)->length], 144231071Sed tmp_data2, val_len); 145231071Sed (*policy)->length += val_len; 146231071Sed (*policy)->data[(*policy)->length] = '\0'; 147231071Sed } 148231071Sed else 149231071Sed { 150231071Sed OPENSSL_free(tmp_data2); 151231071Sed /* realloc failure implies the original data space is b0rked too! */ 152231071Sed (*policy)->data = NULL; 153231071Sed (*policy)->length = 0; 154231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE); 155231071Sed X509V3_conf_err(val); 156231071Sed goto err; 157231071Sed } 158231071Sed OPENSSL_free(tmp_data2); 159231071Sed } 160231071Sed else if (strncmp(val->value, "file:", 5) == 0) 161231071Sed { 162231071Sed unsigned char buf[2048]; 163231071Sed int n; 164231071Sed BIO *b = BIO_new_file(val->value + 5, "r"); 165231071Sed if (!b) 166231071Sed { 167231071Sed X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_BIO_LIB); 168231071Sed X509V3_conf_err(val); 169231071Sed goto err; 170231071Sed } 171231071Sed while((n = BIO_read(b, buf, sizeof(buf))) > 0 172231071Sed || (n == 0 && BIO_should_retry(b))) 173231071Sed { 174231071Sed if (!n) continue; 175231071Sed 176231071Sed tmp_data = OPENSSL_realloc((*policy)->data, 177231071Sed (*policy)->length + n + 1); 178231071Sed 179231071Sed if (!tmp_data) 180231071Sed break; 181 182 (*policy)->data = tmp_data; 183 memcpy(&(*policy)->data[(*policy)->length], 184 buf, n); 185 (*policy)->length += n; 186 (*policy)->data[(*policy)->length] = '\0'; 187 } 188 BIO_free_all(b); 189 190 if (n < 0) 191 { 192 X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_BIO_LIB); 193 X509V3_conf_err(val); 194 goto err; 195 } 196 } 197 else if (strncmp(val->value, "text:", 5) == 0) 198 { 199 val_len = strlen(val->value + 5); 200 tmp_data = OPENSSL_realloc((*policy)->data, 201 (*policy)->length + val_len + 1); 202 if (tmp_data) 203 { 204 (*policy)->data = tmp_data; 205 memcpy(&(*policy)->data[(*policy)->length], 206 val->value + 5, val_len); 207 (*policy)->length += val_len; 208 (*policy)->data[(*policy)->length] = '\0'; 209 } 210 else 211 { 212 /* realloc failure implies the original data space is b0rked too! */ 213 (*policy)->data = NULL; 214 (*policy)->length = 0; 215 X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE); 216 X509V3_conf_err(val); 217 goto err; 218 } 219 } 220 else 221 { 222 X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INCORRECT_POLICY_SYNTAX_TAG); 223 X509V3_conf_err(val); 224 goto err; 225 } 226 if (!tmp_data) 227 { 228 X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE); 229 X509V3_conf_err(val); 230 goto err; 231 } 232 } 233 return 1; 234err: 235 if (free_policy) 236 { 237 ASN1_OCTET_STRING_free(*policy); 238 *policy = NULL; 239 } 240 return 0; 241 } 242 243static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method, 244 X509V3_CTX *ctx, char *value) 245 { 246 PROXY_CERT_INFO_EXTENSION *pci = NULL; 247 STACK_OF(CONF_VALUE) *vals; 248 ASN1_OBJECT *language = NULL; 249 ASN1_INTEGER *pathlen = NULL; 250 ASN1_OCTET_STRING *policy = NULL; 251 int i, j; 252 253 vals = X509V3_parse_list(value); 254 for (i = 0; i < sk_CONF_VALUE_num(vals); i++) 255 { 256 CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i); 257 if (!cnf->name || (*cnf->name != '@' && !cnf->value)) 258 { 259 X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_PROXY_POLICY_SETTING); 260 X509V3_conf_err(cnf); 261 goto err; 262 } 263 if (*cnf->name == '@') 264 { 265 STACK_OF(CONF_VALUE) *sect; 266 int success_p = 1; 267 268 sect = X509V3_get_section(ctx, cnf->name + 1); 269 if (!sect) 270 { 271 X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_SECTION); 272 X509V3_conf_err(cnf); 273 goto err; 274 } 275 for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) 276 { 277 success_p = 278 process_pci_value(sk_CONF_VALUE_value(sect, j), 279 &language, &pathlen, &policy); 280 } 281 X509V3_section_free(ctx, sect); 282 if (!success_p) 283 goto err; 284 } 285 else 286 { 287 if (!process_pci_value(cnf, 288 &language, &pathlen, &policy)) 289 { 290 X509V3_conf_err(cnf); 291 goto err; 292 } 293 } 294 } 295 296 /* Language is mandatory */ 297 if (!language) 298 { 299 X509V3err(X509V3_F_R2I_PCI,X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED); 300 goto err; 301 } 302 i = OBJ_obj2nid(language); 303 if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy) 304 { 305 X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY); 306 goto err; 307 } 308 309 pci = PROXY_CERT_INFO_EXTENSION_new(); 310 if (!pci) 311 { 312 X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE); 313 goto err; 314 } 315 316 pci->proxyPolicy->policyLanguage = language; language = NULL; 317 pci->proxyPolicy->policy = policy; policy = NULL; 318 pci->pcPathLengthConstraint = pathlen; pathlen = NULL; 319 goto end; 320err: 321 if (language) { ASN1_OBJECT_free(language); language = NULL; } 322 if (pathlen) { ASN1_INTEGER_free(pathlen); pathlen = NULL; } 323 if (policy) { ASN1_OCTET_STRING_free(policy); policy = NULL; } 324 if (pci) { PROXY_CERT_INFO_EXTENSION_free(pci); pci = NULL; } 325end: 326 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free); 327 return pci; 328 } 329