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 : {
63 : struct stat sb;
64 : int ret;
65 :
66 0 : ret = stat(residue, &sb);
67 0 : if (ret == -1) {
68 0 : hx509_set_error_string(context, 0, ENOENT,
69 : "No such file %s", residue);
70 0 : return ENOENT;
71 : }
72 :
73 0 : if (!S_ISDIR(sb.st_mode)) {
74 0 : hx509_set_error_string(context, 0, ENOTDIR,
75 : "%s is not a directory", residue);
76 0 : return ENOTDIR;
77 : }
78 : }
79 :
80 0 : *data = strdup(residue);
81 0 : if (*data == NULL) {
82 0 : hx509_clear_error_string(context);
83 0 : return ENOMEM;
84 : }
85 :
86 0 : return 0;
87 : }
88 :
89 : static int
90 0 : dir_free(hx509_certs certs, void *data)
91 : {
92 0 : free(data);
93 0 : return 0;
94 : }
95 :
96 : static int
97 0 : dir_iter_start(hx509_context context,
98 : hx509_certs certs, void *data, void **cursor)
99 : {
100 : struct dircursor *d;
101 :
102 0 : *cursor = NULL;
103 :
104 0 : d = calloc(1, sizeof(*d));
105 0 : if (d == NULL) {
106 0 : hx509_clear_error_string(context);
107 0 : return ENOMEM;
108 : }
109 :
110 0 : d->dir = opendir(data);
111 0 : if (d->dir == NULL) {
112 0 : hx509_clear_error_string(context);
113 0 : free(d);
114 0 : return errno;
115 : }
116 0 : rk_cloexec_dir(d->dir);
117 0 : d->certs = NULL;
118 0 : d->iter = NULL;
119 :
120 0 : *cursor = d;
121 0 : return 0;
122 : }
123 :
124 : static int
125 0 : dir_iter(hx509_context context,
126 : hx509_certs certs, void *data, void *iter, hx509_cert *cert)
127 : {
128 0 : struct dircursor *d = iter;
129 0 : int ret = 0;
130 :
131 0 : *cert = NULL;
132 :
133 : do {
134 : struct dirent *dir;
135 : char *fn;
136 :
137 0 : if (d->certs) {
138 0 : ret = hx509_certs_next_cert(context, d->certs, d->iter, cert);
139 0 : if (ret) {
140 0 : hx509_certs_end_seq(context, d->certs, d->iter);
141 0 : d->iter = NULL;
142 0 : hx509_certs_free(&d->certs);
143 0 : return ret;
144 : }
145 0 : if (*cert) {
146 0 : ret = 0;
147 0 : break;
148 : }
149 0 : hx509_certs_end_seq(context, d->certs, d->iter);
150 0 : d->iter = NULL;
151 0 : hx509_certs_free(&d->certs);
152 : }
153 :
154 0 : dir = readdir(d->dir);
155 0 : if (dir == NULL) {
156 0 : ret = 0;
157 0 : break;
158 : }
159 0 : if (strcmp(dir->d_name, ".") == 0 || strcmp(dir->d_name, "..") == 0)
160 0 : continue;
161 :
162 0 : if (asprintf(&fn, "FILE:%s/%s", (char *)data, dir->d_name) == -1)
163 0 : return ENOMEM;
164 :
165 0 : ret = hx509_certs_init(context, fn, 0, NULL, &d->certs);
166 0 : if (ret == 0) {
167 :
168 0 : ret = hx509_certs_start_seq(context, d->certs, &d->iter);
169 0 : if (ret)
170 0 : hx509_certs_free(&d->certs);
171 : }
172 : /* ignore errors */
173 0 : if (ret) {
174 0 : d->certs = NULL;
175 0 : ret = 0;
176 : }
177 :
178 0 : free(fn);
179 0 : } while(ret == 0);
180 :
181 0 : return ret;
182 : }
183 :
184 :
185 : static int
186 0 : dir_iter_end(hx509_context context,
187 : hx509_certs certs,
188 : void *data,
189 : void *cursor)
190 : {
191 0 : struct dircursor *d = cursor;
192 :
193 0 : if (d->certs) {
194 0 : hx509_certs_end_seq(context, d->certs, d->iter);
195 0 : d->iter = NULL;
196 0 : hx509_certs_free(&d->certs);
197 : }
198 0 : closedir(d->dir);
199 0 : free(d);
200 0 : return 0;
201 : }
202 :
203 :
204 : static struct hx509_keyset_ops keyset_dir = {
205 : "DIR",
206 : 0,
207 : dir_init,
208 : NULL,
209 : dir_free,
210 : NULL,
211 : NULL,
212 : dir_iter_start,
213 : dir_iter,
214 : dir_iter_end
215 : };
216 :
217 : void
218 908739 : _hx509_ks_dir_register(hx509_context context)
219 : {
220 908739 : _hx509_ks_register(context, &keyset_dir);
221 908739 : }
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