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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
77typedef 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
86static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
87 char **ret);
88static int new_dir(X509_LOOKUP *lu);
89static void free_dir(X509_LOOKUP *lu);
90static int add_cert_dir(BY_DIR *ctx,const char *dir,int type);
91static int get_cert_by_subject(X509_LOOKUP *xl,int type,X509_NAME *name,
92 X509_OBJECT *ret);
93X509_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
107X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
108 {
109 return(&x509_dir_lookup);
110 }
111
112static 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 = NULL;
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 dir=(char *)Getenv(X509_get_default_cert_dir_env());
127 if (dir)
128 ret=add_cert_dir(ld,dir,X509_FILETYPE_PEM);
129 else
130 ret=add_cert_dir(ld,X509_get_default_cert_dir(),
131 X509_FILETYPE_PEM);
132 if (!ret)
133 {
134 X509err(X509_F_DIR_CTRL,X509_R_LOADING_CERT_DIR);
135 }
136 }
137 else
138 ret=add_cert_dir(ld,argp,(int)argl);
139 break;
140 }
141 return(ret);
142 }
143
144static int new_dir(X509_LOOKUP *lu)
145 {
146 BY_DIR *a;
147
148 if ((a=(BY_DIR *)OPENSSL_malloc(sizeof(BY_DIR))) == NULL)
149 return(0);
150 if ((a->buffer=BUF_MEM_new()) == NULL)
151 {
152 OPENSSL_free(a);
153 return(0);
154 }
155 a->num_dirs=0;
156 a->dirs=NULL;
157 a->dirs_type=NULL;
158 a->num_dirs_alloced=0;
159 lu->method_data=(char *)a;
160 return(1);
161 }
162
163static void free_dir(X509_LOOKUP *lu)
164 {
165 BY_DIR *a;
166 int i;
167
168 a=(BY_DIR *)lu->method_data;
169 for (i=0; i<a->num_dirs; i++)
170 if (a->dirs[i] != NULL) OPENSSL_free(a->dirs[i]);
171 if (a->dirs != NULL) OPENSSL_free(a->dirs);
172 if (a->dirs_type != NULL) OPENSSL_free(a->dirs_type);
173 if (a->buffer != NULL) BUF_MEM_free(a->buffer);
174 OPENSSL_free(a);
175 }
176
177static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
178 {
179 int j,len;
180 int *ip;
181 const char *s,*ss,*p;
182 char **pp;
183
184 if (dir == NULL || !*dir)
185 {
186 X509err(X509_F_ADD_CERT_DIR,X509_R_INVALID_DIRECTORY);
187 return 0;
188 }
189
190 s=dir;
191 p=s;
192 for (;;p++)
193 {
194 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0'))
195 {
196 ss=s;
197 s=p+1;
198 len=(int)(p-ss);
199 if (len == 0) continue;
200 for (j=0; j<ctx->num_dirs; j++)
201 if (strlen(ctx->dirs[j]) == (size_t)len &&
202 strncmp(ctx->dirs[j],ss,(unsigned int)len) == 0)
203 break;
204 if (j<ctx->num_dirs)
205 continue;
206 if (ctx->num_dirs_alloced < (ctx->num_dirs+1))
207 {
208 ctx->num_dirs_alloced+=10;
209 pp=(char **)OPENSSL_malloc(ctx->num_dirs_alloced*
210 sizeof(char *));
211 ip=(int *)OPENSSL_malloc(ctx->num_dirs_alloced*
212 sizeof(int));
213 if ((pp == NULL) || (ip == NULL))
214 {
215 X509err(X509_F_ADD_CERT_DIR,ERR_R_MALLOC_FAILURE);
216 return(0);
217 }
218 memcpy(pp,ctx->dirs,(ctx->num_dirs_alloced-10)*
219 sizeof(char *));
220 memcpy(ip,ctx->dirs_type,(ctx->num_dirs_alloced-10)*
221 sizeof(int));
222 if (ctx->dirs != NULL)
223 OPENSSL_free(ctx->dirs);
224 if (ctx->dirs_type != NULL)
225 OPENSSL_free(ctx->dirs_type);
226 ctx->dirs=pp;
227 ctx->dirs_type=ip;
228 }
229 ctx->dirs_type[ctx->num_dirs]=type;
230 ctx->dirs[ctx->num_dirs]=(char *)OPENSSL_malloc((unsigned int)len+1);
231 if (ctx->dirs[ctx->num_dirs] == NULL) return(0);
232 strncpy(ctx->dirs[ctx->num_dirs],ss,(unsigned int)len);
233 ctx->dirs[ctx->num_dirs][len]='\0';
234 ctx->num_dirs++;
235 }
236 if (*p == '\0') break;
237 }
238 return(1);
239 }
240
241static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
242 X509_OBJECT *ret)
243 {
244 BY_DIR *ctx;
245 union {
246 struct {
247 X509 st_x509;
248 X509_CINF st_x509_cinf;
249 } x509;
250 struct {
251 X509_CRL st_crl;
252 X509_CRL_INFO st_crl_info;
253 } crl;
254 } data;
255 int ok=0;
256 int i,j,k;
257 unsigned long h;
258 BUF_MEM *b=NULL;
259 struct stat st;
260 X509_OBJECT stmp,*tmp;
261 const char *postfix="";
262
263 if (name == NULL) return(0);
264
265 stmp.type=type;
266 if (type == X509_LU_X509)
267 {
268 data.x509.st_x509.cert_info= &data.x509.st_x509_cinf;
269 data.x509.st_x509_cinf.subject=name;
270 stmp.data.x509= &data.x509.st_x509;
271 postfix="";
272 }
273 else if (type == X509_LU_CRL)
274 {
275 data.crl.st_crl.crl= &data.crl.st_crl_info;
276 data.crl.st_crl_info.issuer=name;
277 stmp.data.crl= &data.crl.st_crl;
278 postfix="r";
279 }
280 else
281 {
282 X509err(X509_F_GET_CERT_BY_SUBJECT,X509_R_WRONG_LOOKUP_TYPE);
283 goto finish;
284 }
285
286 if ((b=BUF_MEM_new()) == NULL)
287 {
288 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_BUF_LIB);
289 goto finish;
290 }
291
292 ctx=(BY_DIR *)xl->method_data;
293
294 h=X509_NAME_hash(name);
295 for (i=0; i<ctx->num_dirs; i++)
296 {
297 j=strlen(ctx->dirs[i])+1+8+6+1+1;
298 if (!BUF_MEM_grow(b,j))
299 {
300 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_MALLOC_FAILURE);
301 goto finish;
302 }
303 k=0;
304 for (;;)
305 {
306 char c = '/';
307#ifdef OPENSSL_SYS_VMS
308 c = ctx->dirs[i][strlen(ctx->dirs[i])-1];
309 if (c != ':' && c != '>' && c != ']')
310 {
311 /* If no separator is present, we assume the
312 directory specifier is a logical name, and
313 add a colon. We really should use better
314 VMS routines for merging things like this,
315 but this will do for now...
316 -- Richard Levitte */
317 c = ':';
318 }
319 else
320 {
321 c = '\0';
322 }
323#endif
324 if (c == '\0')
325 {
326 /* This is special. When c == '\0', no
327 directory separator should be added. */
328 BIO_snprintf(b->data,b->max,
329 "%s%08lx.%s%d",ctx->dirs[i],h,
330 postfix,k);
331 }
332 else
333 {
334 BIO_snprintf(b->data,b->max,
335 "%s%c%08lx.%s%d",ctx->dirs[i],c,h,
336 postfix,k);
337 }
338 k++;
339 if (stat(b->data,&st) < 0)
340 break;
341 /* found one. */
342 if (type == X509_LU_X509)
343 {
344 if ((X509_load_cert_file(xl,b->data,
345 ctx->dirs_type[i])) == 0)
346 break;
347 }
348 else if (type == X509_LU_CRL)
349 {
350 if ((X509_load_crl_file(xl,b->data,
351 ctx->dirs_type[i])) == 0)
352 break;
353 }
354 /* else case will caught higher up */
355 }
356
357 /* we have added it to the cache so now pull
358 * it out again */
359 CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE);
360 j = sk_X509_OBJECT_find(xl->store_ctx->objs,&stmp);
361 if(j != -1) tmp=sk_X509_OBJECT_value(xl->store_ctx->objs,j);
362 else tmp = NULL;
363 CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE);
364
365 if (tmp != NULL)
366 {
367 ok=1;
368 ret->type=tmp->type;
369 memcpy(&ret->data,&tmp->data,sizeof(ret->data));
370 /* If we were going to up the reference count,
371 * we would need to do it on a perl 'type'
372 * basis */
373 /* CRYPTO_add(&tmp->data.x509->references,1,
374 CRYPTO_LOCK_X509);*/
375 goto finish;
376 }
377 }
378finish:
379 if (b != NULL) BUF_MEM_free(b);
380 return(ok);
381 }
382
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