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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#include <sys/types.h>
63#include <sys/stat.h>
64
65#include "cryptlib.h"
66#include "lhash.h"
67#include "x509.h"
68#include "pem.h"
69
70typedef struct lookup_dir_st
71 {
72 BUF_MEM *buffer;
73 int num_dirs;
74 char **dirs;
75 int *dirs_type;
76 int num_dirs_alloced;
77 } BY_DIR;
78
79#ifndef NOPROTO
80static int dir_ctrl(X509_LOOKUP *ctx,int cmd,char *argp,long argl,char **ret);
81static int new_dir(X509_LOOKUP *lu);
82static void free_dir(X509_LOOKUP *lu);
83static int add_cert_dir(BY_DIR *ctx,char *dir,int type);
84static int get_cert_by_subject(X509_LOOKUP *xl,int type,X509_NAME *name,
85 X509_OBJECT *ret);
86#else
87static int dir_ctrl();
88static int new_dir();
89static void free_dir();
90static int add_cert_dir();
91static int get_cert_by_subject();
92#endif
93
94X509_LOOKUP_METHOD x509_dir_lookup=
95 {
96 "Load certs from files in a directory",
97 new_dir, /* new */
98 free_dir, /* free */
99 NULL, /* init */
100 NULL, /* shutdown */
101 dir_ctrl, /* ctrl */
102 get_cert_by_subject, /* get_by_subject */
103 NULL, /* get_by_issuer_serial */
104 NULL, /* get_by_fingerprint */
105 NULL, /* get_by_alias */
106 };
107
108X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir()
109 {
110 return(&x509_dir_lookup);
111 }
112
113static int dir_ctrl(ctx,cmd,argp,argl,retp)
114X509_LOOKUP *ctx;
115int cmd;
116long argl;
117char *argp;
118char **retp;
119 {
120 int ret=0;
121 BY_DIR *ld;
122 char *dir;
123
124 ld=(BY_DIR *)ctx->method_data;
125
126 switch (cmd)
127 {
128 case X509_L_ADD_DIR:
129 if (argl == X509_FILETYPE_DEFAULT)
130 {
131 ret=add_cert_dir(ld,X509_get_default_cert_dir(),
132 X509_FILETYPE_PEM);
133 if (!ret)
134 {
135 X509err(X509_F_DIR_CTRL,X509_R_LOADING_CERT_DIR);
136 }
137 else
138 {
139 dir=(char *)Getenv(X509_get_default_cert_dir_env());
140 ret=add_cert_dir(ld,dir,X509_FILETYPE_PEM);
141 }
142 }
143 else
144 ret=add_cert_dir(ld,argp,(int)argl);
145 break;
146 }
147 return(ret);
148 }
149
150static int new_dir(lu)
151X509_LOOKUP *lu;
152 {
153 BY_DIR *a;
154
155 if ((a=(BY_DIR *)Malloc(sizeof(BY_DIR))) == NULL)
156 return(0);
157 if ((a->buffer=BUF_MEM_new()) == NULL)
158 {
159 Free(a);
160 return(0);
161 }
162 a->num_dirs=0;
163 a->dirs=NULL;
164 a->dirs_type=NULL;
165 a->num_dirs_alloced=0;
166 lu->method_data=(char *)a;
167 return(1);
168 }
169
170static void free_dir(lu)
171X509_LOOKUP *lu;
172 {
173 BY_DIR *a;
174 int i;
175
176 a=(BY_DIR *)lu->method_data;
177 for (i=0; i<a->num_dirs; i++)
178 if (a->dirs[i] != NULL) Free(a->dirs[i]);
179 if (a->dirs != NULL) Free(a->dirs);
180 if (a->dirs_type != NULL) Free(a->dirs_type);
181 if (a->buffer != NULL) BUF_MEM_free(a->buffer);
182 Free(a);
183 }
184
185static int add_cert_dir(ctx,dir, type)
186BY_DIR *ctx;
187char *dir;
188int type;
189 {
190 int j,len;
191 int *ip;
192 char *s,*ss,*p;
193 char **pp;
194
195 if (dir == NULL) return(0);
196
197 s=dir;
198 p=s;
199 for (;;)
200 {
201 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0'))
202 {
203 ss=s;
204 s=p+1;
205 len=(int)(p-ss);
206 if (len == 0) continue;
207 for (j=0; j<ctx->num_dirs; j++)
208 if (strncmp(ctx->dirs[j],ss,(unsigned int)len) == 0)
209 continue;
210 if (ctx->num_dirs_alloced < (ctx->num_dirs+1))
211 {
212 ctx->num_dirs_alloced+=10;
213 pp=(char **)Malloc(ctx->num_dirs_alloced*
214 sizeof(char *));
215 ip=(int *)Malloc(ctx->num_dirs_alloced*
216 sizeof(int));
217 if ((pp == NULL) || (ip == NULL))
218 {
219 X509err(X509_F_ADD_CERT_DIR,ERR_R_MALLOC_FAILURE);
220 return(0);
221 }
222 memcpy(pp,ctx->dirs,(ctx->num_dirs_alloced-10)*
223 sizeof(char *));
224 memcpy(ip,ctx->dirs_type,(ctx->num_dirs_alloced-10)*
225 sizeof(int));
226 if (ctx->dirs != NULL)
227 Free((char *)ctx->dirs);
228 if (ctx->dirs_type != NULL)
229 Free((char *)ctx->dirs_type);
230 ctx->dirs=pp;
231 ctx->dirs_type=ip;
232 }
233 ctx->dirs_type[ctx->num_dirs]=type;
234 ctx->dirs[ctx->num_dirs]=(char *)Malloc((unsigned int)len+1);
235 if (ctx->dirs[ctx->num_dirs] == NULL) return(0);
236 strncpy(ctx->dirs[ctx->num_dirs],ss,(unsigned int)len);
237 ctx->dirs[ctx->num_dirs][len]='\0';
238 ctx->num_dirs++;
239 }
240 if (*p == '\0') break;
241 p++;
242 }
243 return(1);
244 }
245
246static int get_cert_by_subject(xl,type,name,ret)
247X509_LOOKUP *xl;
248int type;
249X509_NAME *name;
250X509_OBJECT *ret;
251 {
252 BY_DIR *ctx;
253 union {
254 struct {
255 X509 st_x509;
256 X509_CINF st_x509_cinf;
257 } x509;
258 struct {
259 X509_CRL st_crl;
260 X509_CRL_INFO st_crl_info;
261 } crl;
262 } data;
263 int ok=0;
264 int i,j,k;
265 unsigned long h;
266 BUF_MEM *b=NULL;
267 struct stat st;
268 X509_OBJECT stmp,*tmp;
269 char *postfix="";
270
271 if (name == NULL) return(0);
272
273 stmp.type=type;
274 if (type == X509_LU_X509)
275 {
276 data.x509.st_x509.cert_info= &data.x509.st_x509_cinf;
277 data.x509.st_x509_cinf.subject=name;
278 stmp.data.x509= &data.x509.st_x509;
279 postfix="";
280 }
281 else if (type == X509_LU_CRL)
282 {
283 data.crl.st_crl.crl= &data.crl.st_crl_info;
284 data.crl.st_crl_info.issuer=name;
285 stmp.data.crl= &data.crl.st_crl;
286 postfix="r";
287 }
288 else
289 {
290 X509err(X509_F_GET_CERT_BY_SUBJECT,X509_R_WRONG_LOOKUP_TYPE);
291 goto finish;
292 }
293
294 if ((b=BUF_MEM_new()) == NULL)
295 {
296 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_BUF_LIB);
297 goto finish;
298 }
299
300 ctx=(BY_DIR *)xl->method_data;
301
302 h=X509_NAME_hash(name);
303 for (i=0; i<ctx->num_dirs; i++)
304 {
305 j=strlen(ctx->dirs[i])+1+8+6+1+1;
306 if (!BUF_MEM_grow(b,j))
307 {
308 X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_MALLOC_FAILURE);
309 goto finish;
310 }
311 k=0;
312 for (;;)
313 {
314 sprintf(b->data,"%s/%08lx.%s%d",ctx->dirs[i],h,
315 postfix,k);
316 k++;
317 if (stat(b->data,&st) < 0)
318 break;
319 /* found one. */
320 if (type == X509_LU_X509)
321 {
322 if ((X509_load_cert_file(xl,b->data,
323 ctx->dirs_type[i])) == 0)
324 break;
325 }
326 else if (type == X509_LU_CRL)
327 {
328 if ((X509_load_crl_file(xl,b->data,
329 ctx->dirs_type[i])) == 0)
330 break;
331 }
332 /* else case will caught higher up */
333 }
334
335 /* we have added it to the cache so now pull
336 * it out again */
337 CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE);
338 tmp=(X509_OBJECT *)lh_retrieve(xl->store_ctx->certs,
339 (char *)&stmp);
340 CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE);
341
342 if (tmp != NULL)
343 {
344 ok=1;
345 ret->type=tmp->type;
346 memcpy(&ret->data,&tmp->data,sizeof(ret->data));
347 /* If we were going to up the reference count,
348 * we would need to do it on a perl 'type'
349 * basis */
350 /* CRYPTO_add(&tmp->data.x509->references,1,
351 CRYPTO_LOCK_X509);*/
352 goto finish;
353 }
354 }
355finish:
356 if (b != NULL) BUF_MEM_free(b);
357 return(ok);
358 }
359
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