Line data Source code
1 : /*
2 : * Copyright (c) 2006 Kungliga Tekniska Högskolan
3 : * (Royal Institute of Technology, Stockholm, Sweden).
4 : * All rights reserved.
5 : *
6 : * Redistribution and use in source and binary forms, with or without
7 : * modification, are permitted provided that the following conditions
8 : * are met:
9 : *
10 : * 1. Redistributions of source code must retain the above copyright
11 : * notice, this list of conditions and the following disclaimer.
12 : *
13 : * 2. Redistributions in binary form must reproduce the above copyright
14 : * notice, this list of conditions and the following disclaimer in the
15 : * documentation and/or other materials provided with the distribution.
16 : *
17 : * 3. Neither the name of the Institute nor the names of its contributors
18 : * may be used to endorse or promote products derived from this software
19 : * without specific prior written permission.
20 : *
21 : * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 : * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 : * SUCH DAMAGE.
32 : */
33 :
34 : #include "hx_locl.h"
35 : #include <dirent.h>
36 :
37 : /*
38 : * The DIR keyset module is strange compared to the other modules
39 : * since it does lazy evaluation and really doesn't keep any local
40 : * state except for the directory iteration and cert iteration of
41 : * files. DIR ignores most errors so that the consumer doesn't get
42 : * failes for stray files in directories.
43 : */
44 :
45 : struct dircursor {
46 : DIR *dir;
47 : hx509_certs certs;
48 : void *iter;
49 : };
50 :
51 : /*
52 : *
53 : */
54 :
55 : static int
56 0 : dir_init(hx509_context context,
57 : hx509_certs certs, void **data, int flags,
58 : const char *residue, hx509_lock lock)
59 : {
60 0 : *data = NULL;
61 :
62 0 : if (residue == NULL || residue[0] == '\0') {
63 0 : hx509_set_error_string(context, 0, EINVAL,
64 : "DIR file name not specified");
65 0 : return EINVAL;
66 : }
67 :
68 : {
69 0 : struct stat sb;
70 0 : int ret;
71 :
72 0 : ret = stat(residue, &sb);
73 0 : if (ret == -1) {
74 0 : hx509_set_error_string(context, 0, ENOENT,
75 : "No such file %s", residue);
76 0 : return ENOENT;
77 : }
78 :
79 0 : if (!S_ISDIR(sb.st_mode)) {
80 0 : hx509_set_error_string(context, 0, ENOTDIR,
81 : "%s is not a directory", residue);
82 0 : return ENOTDIR;
83 : }
84 : }
85 :
86 0 : *data = strdup(residue);
87 0 : if (*data == NULL) {
88 0 : hx509_clear_error_string(context);
89 0 : return ENOMEM;
90 : }
91 :
92 0 : return 0;
93 : }
94 :
95 : static int
96 0 : dir_free(hx509_certs certs, void *data)
97 : {
98 0 : free(data);
99 0 : return 0;
100 : }
101 :
102 : static int
103 0 : dir_iter_start(hx509_context context,
104 : hx509_certs certs, void *data, void **cursor)
105 : {
106 0 : struct dircursor *d;
107 :
108 0 : *cursor = NULL;
109 :
110 0 : d = calloc(1, sizeof(*d));
111 0 : if (d == NULL) {
112 0 : hx509_clear_error_string(context);
113 0 : return ENOMEM;
114 : }
115 :
116 0 : d->dir = opendir(data);
117 0 : if (d->dir == NULL) {
118 0 : hx509_clear_error_string(context);
119 0 : free(d);
120 0 : return errno;
121 : }
122 0 : rk_cloexec_dir(d->dir);
123 0 : d->certs = NULL;
124 0 : d->iter = NULL;
125 :
126 0 : *cursor = d;
127 0 : return 0;
128 : }
129 :
130 : static int
131 0 : dir_iter(hx509_context context,
132 : hx509_certs certs, void *data, void *iter, hx509_cert *cert)
133 : {
134 0 : struct dircursor *d = iter;
135 0 : int ret = 0;
136 :
137 0 : *cert = NULL;
138 :
139 0 : do {
140 0 : struct dirent *dir;
141 0 : char *fn;
142 :
143 0 : if (d->certs) {
144 0 : ret = hx509_certs_next_cert(context, d->certs, d->iter, cert);
145 0 : if (ret) {
146 0 : hx509_certs_end_seq(context, d->certs, d->iter);
147 0 : d->iter = NULL;
148 0 : hx509_certs_free(&d->certs);
149 0 : return ret;
150 : }
151 0 : if (*cert) {
152 0 : ret = 0;
153 0 : break;
154 : }
155 0 : hx509_certs_end_seq(context, d->certs, d->iter);
156 0 : d->iter = NULL;
157 0 : hx509_certs_free(&d->certs);
158 : }
159 :
160 0 : dir = readdir(d->dir);
161 0 : if (dir == NULL) {
162 0 : ret = 0;
163 0 : break;
164 : }
165 0 : if (strcmp(dir->d_name, ".") == 0 || strcmp(dir->d_name, "..") == 0)
166 0 : continue;
167 :
168 0 : if (asprintf(&fn, "FILE:%s/%s", (char *)data, dir->d_name) == -1)
169 0 : return ENOMEM;
170 :
171 0 : ret = hx509_certs_init(context, fn, 0, NULL, &d->certs);
172 0 : if (ret == 0) {
173 :
174 0 : ret = hx509_certs_start_seq(context, d->certs, &d->iter);
175 0 : if (ret)
176 0 : hx509_certs_free(&d->certs);
177 : }
178 : /* ignore errors */
179 0 : if (ret) {
180 0 : d->certs = NULL;
181 0 : ret = 0;
182 : }
183 :
184 0 : free(fn);
185 0 : } while(ret == 0);
186 :
187 0 : return ret;
188 : }
189 :
190 :
191 : static int
192 0 : dir_iter_end(hx509_context context,
193 : hx509_certs certs,
194 : void *data,
195 : void *cursor)
196 : {
197 0 : struct dircursor *d = cursor;
198 :
199 0 : if (d->certs) {
200 0 : hx509_certs_end_seq(context, d->certs, d->iter);
201 0 : d->iter = NULL;
202 0 : hx509_certs_free(&d->certs);
203 : }
204 0 : closedir(d->dir);
205 0 : free(d);
206 0 : return 0;
207 : }
208 :
209 :
210 : static struct hx509_keyset_ops keyset_dir = {
211 : "DIR",
212 : 0,
213 : dir_init,
214 : NULL,
215 : dir_free,
216 : NULL,
217 : NULL,
218 : dir_iter_start,
219 : dir_iter,
220 : dir_iter_end,
221 : NULL,
222 : NULL,
223 : NULL,
224 : NULL
225 : };
226 :
227 : HX509_LIB_FUNCTION void HX509_LIB_CALL
228 792004 : _hx509_ks_dir_register(hx509_context context)
229 : {
230 792004 : _hx509_ks_register(context, &keyset_dir);
231 792004 : }
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