1 /* crypto/x509/by_dir.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 <time.h> 61 #include <errno.h> 62 63 #include "cryptlib.h" 64 65 #ifndef NO_SYS_TYPES_H 66 # include <sys/types.h> 67 #endif 68 #ifdef MAC_OS_pre_X 69 # include <stat.h> 70 #else 71 # include <sys/stat.h> 72 #endif 73 74 #include <openssl/lhash.h> 75 #include <openssl/x509.h> 76 77 typedef struct lookup_dir_st 78 { 79 BUF_MEM *buffer; 80 int num_dirs; 81 char **dirs; 82 int *dirs_type; 83 int num_dirs_alloced; 84 } BY_DIR; 85 86 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, 87 char **ret); 88 static int new_dir(X509_LOOKUP *lu); 89 static void free_dir(X509_LOOKUP *lu); 90 static int add_cert_dir(BY_DIR *ctx,const char *dir,int type); 91 static int get_cert_by_subject(X509_LOOKUP *xl,int type,X509_NAME *name, 92 X509_OBJECT *ret); 93 X509_LOOKUP_METHOD x509_dir_lookup= 94 { 95 "Load certs from files in a directory", 96 new_dir, /* new */ 97 free_dir, /* free */ 98 NULL, /* init */ 99 NULL, /* shutdown */ 100 dir_ctrl, /* ctrl */ 101 get_cert_by_subject, /* get_by_subject */ 102 NULL, /* get_by_issuer_serial */ 103 NULL, /* get_by_fingerprint */ 104 NULL, /* get_by_alias */ 105 }; 106 107 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void) 108 { 109 return(&x509_dir_lookup); 110 } 111 112 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, 113 char **retp) 114 { 115 int ret=0; 116 BY_DIR *ld; 117 char *dir; 118 119 ld=(BY_DIR *)ctx->method_data; 120 121 switch (cmd) 122 { 123 case X509_L_ADD_DIR: 124 if (argl == X509_FILETYPE_DEFAULT) 125 { 126 ret=add_cert_dir(ld,X509_get_default_cert_dir(), 127 X509_FILETYPE_PEM); 128 if (!ret) 129 { 130 X509err(X509_F_DIR_CTRL,X509_R_LOADING_CERT_DIR); 131 } 132 else 133 { 134 dir=(char *)Getenv(X509_get_default_cert_dir_env()); 135 ret=add_cert_dir(ld,dir,X509_FILETYPE_PEM); 136 } 137 } 138 else 139 ret=add_cert_dir(ld,argp,(int)argl); 140 break; 141 } 142 return(ret); 143 } 144 145 static int new_dir(X509_LOOKUP *lu) 146 { 147 BY_DIR *a; 148 149 if ((a=(BY_DIR *)OPENSSL_malloc(sizeof(BY_DIR))) == NULL) 150 return(0); 151 if ((a->buffer=BUF_MEM_new()) == NULL) 152 { 153 OPENSSL_free(a); 154 return(0); 155 } 156 a->num_dirs=0; 157 a->dirs=NULL; 158 a->dirs_type=NULL; 159 a->num_dirs_alloced=0; 160 lu->method_data=(char *)a; 161 return(1); 162 } 163 164 static void free_dir(X509_LOOKUP *lu) 165 { 166 BY_DIR *a; 167 int i; 168 169 a=(BY_DIR *)lu->method_data; 170 for (i=0; i<a->num_dirs; i++) 171 if (a->dirs[i] != NULL) OPENSSL_free(a->dirs[i]); 172 if (a->dirs != NULL) OPENSSL_free(a->dirs); 173 if (a->dirs_type != NULL) OPENSSL_free(a->dirs_type); 174 if (a->buffer != NULL) BUF_MEM_free(a->buffer); 175 OPENSSL_free(a); 176 } 177 178 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type) 179 { 180 int j,len; 181 int *ip; 182 const char *s,*ss,*p; 183 char **pp; 184 185 if (dir == NULL || !*dir) 186 { 187 X509err(X509_F_ADD_CERT_DIR,X509_R_INVALID_DIRECTORY); 188 return 0; 189 } 190 191 s=dir; 192 p=s; 193 for (;;) 194 { 195 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) 196 { 197 ss=s; 198 s=p+1; 199 len=(int)(p-ss); 200 if (len == 0) continue; 201 for (j=0; j<ctx->num_dirs; j++) 202 if (strncmp(ctx->dirs[j],ss,(unsigned int)len) == 0) 203 continue; 204 if (ctx->num_dirs_alloced < (ctx->num_dirs+1)) 205 { 206 ctx->num_dirs_alloced+=10; 207 pp=(char **)OPENSSL_malloc(ctx->num_dirs_alloced* 208 sizeof(char *)); 209 ip=(int *)OPENSSL_malloc(ctx->num_dirs_alloced* 210 sizeof(int)); 211 if ((pp == NULL) || (ip == NULL)) 212 { 213 X509err(X509_F_ADD_CERT_DIR,ERR_R_MALLOC_FAILURE); 214 return(0); 215 } 216 memcpy(pp,ctx->dirs,(ctx->num_dirs_alloced-10)* 217 sizeof(char *)); 218 memcpy(ip,ctx->dirs_type,(ctx->num_dirs_alloced-10)* 219 sizeof(int)); 220 if (ctx->dirs != NULL) 221 OPENSSL_free(ctx->dirs); 222 if (ctx->dirs_type != NULL) 223 OPENSSL_free(ctx->dirs_type); 224 ctx->dirs=pp; 225 ctx->dirs_type=ip; 226 } 227 ctx->dirs_type[ctx->num_dirs]=type; 228 ctx->dirs[ctx->num_dirs]=(char *)OPENSSL_malloc((unsigned int)len+1); 229 if (ctx->dirs[ctx->num_dirs] == NULL) return(0); 230 strncpy(ctx->dirs[ctx->num_dirs],ss,(unsigned int)len); 231 ctx->dirs[ctx->num_dirs][len]='\0'; 232 ctx->num_dirs++; 233 } 234 if (*p == '\0') break; 235 p++; 236 } 237 return(1); 238 } 239 240 static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name, 241 X509_OBJECT *ret) 242 { 243 BY_DIR *ctx; 244 union { 245 struct { 246 X509 st_x509; 247 X509_CINF st_x509_cinf; 248 } x509; 249 struct { 250 X509_CRL st_crl; 251 X509_CRL_INFO st_crl_info; 252 } crl; 253 } data; 254 int ok=0; 255 int i,j,k; 256 unsigned long h; 257 BUF_MEM *b=NULL; 258 struct stat st; 259 X509_OBJECT stmp,*tmp; 260 const char *postfix=""; 261 262 if (name == NULL) return(0); 263 264 stmp.type=type; 265 if (type == X509_LU_X509) 266 { 267 data.x509.st_x509.cert_info= &data.x509.st_x509_cinf; 268 data.x509.st_x509_cinf.subject=name; 269 stmp.data.x509= &data.x509.st_x509; 270 postfix=""; 271 } 272 else if (type == X509_LU_CRL) 273 { 274 data.crl.st_crl.crl= &data.crl.st_crl_info; 275 data.crl.st_crl_info.issuer=name; 276 stmp.data.crl= &data.crl.st_crl; 277 postfix="r"; 278 } 279 else 280 { 281 X509err(X509_F_GET_CERT_BY_SUBJECT,X509_R_WRONG_LOOKUP_TYPE); 282 goto finish; 283 } 284 285 if ((b=BUF_MEM_new()) == NULL) 286 { 287 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_BUF_LIB); 288 goto finish; 289 } 290 291 ctx=(BY_DIR *)xl->method_data; 292 293 h=X509_NAME_hash(name); 294 for (i=0; i<ctx->num_dirs; i++) 295 { 296 j=strlen(ctx->dirs[i])+1+8+6+1+1; 297 if (!BUF_MEM_grow(b,j)) 298 { 299 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_MALLOC_FAILURE); 300 goto finish; 301 } 302 k=0; 303 for (;;) 304 { 305 sprintf(b->data,"%s/%08lx.%s%d",ctx->dirs[i],h, 306 postfix,k); 307 k++; 308 if (stat(b->data,&st) < 0) 309 break; 310 /* found one. */ 311 if (type == X509_LU_X509) 312 { 313 if ((X509_load_cert_file(xl,b->data, 314 ctx->dirs_type[i])) == 0) 315 break; 316 } 317 else if (type == X509_LU_CRL) 318 { 319 if ((X509_load_crl_file(xl,b->data, 320 ctx->dirs_type[i])) == 0) 321 break; 322 } 323 /* else case will caught higher up */ 324 } 325 326 /* we have added it to the cache so now pull 327 * it out again */ 328 CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE); 329 j = sk_X509_OBJECT_find(xl->store_ctx->objs,&stmp); 330 if(j != -1) tmp=sk_X509_OBJECT_value(xl->store_ctx->objs,j); 331 else tmp = NULL; 332 CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE); 333 334 if (tmp != NULL) 335 { 336 ok=1; 337 ret->type=tmp->type; 338 memcpy(&ret->data,&tmp->data,sizeof(ret->data)); 339 /* If we were going to up the reference count, 340 * we would need to do it on a perl 'type' 341 * basis */ 342 /* CRYPTO_add(&tmp->data.x509->references,1, 343 CRYPTO_LOCK_X509);*/ 344 goto finish; 345 } 346 } 347 finish: 348 if (b != NULL) BUF_MEM_free(b); 349 return(ok); 350 } 351 352