95c6be59d0d9c9fba3a35bb80a00b00a057afa6c
[tclink.git] / mem.c
1 /* originally from crypto/x509/by_file.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 /* Added code to use a memory object as opposed to a file for lookup purposes. */
60
61 #include <string.h>
62
63 #include <openssl/bio.h>
64 #include <openssl/err.h>
65 #include <openssl/pem.h>
66 #include <openssl/ssl.h>
67 #include <openssl/x509_vfy.h>
68
69 static int by_mem_ctrl(X509_LOOKUP *, int, const char *, long, char **);
70 static int X509_load_cert_crl_mem(X509_LOOKUP *ctx, const char *str, int type);
71
72 X509_LOOKUP_METHOD x509_mem_lookup =
73 {
74 "Memory from user provided string",
75 NULL,
76 NULL,
77 NULL,
78 NULL,
79 by_mem_ctrl,
80 NULL,
81 NULL,
82 NULL,
83 NULL
84 };
85
86 static X509_LOOKUP_METHOD * X509_LOOKUP_mem()
87 {
88 return (&x509_mem_lookup);
89 }
90
91 static int by_mem_ctrl(X509_LOOKUP *ctx, int cmd, const char * str, long argl, char ** ret)
92 {
93 int status = 0;
94 if (cmd == X509_L_FILE_LOAD)
95 {
96 if (argl == X509_FILETYPE_PEM)
97 return X509_load_cert_crl_mem(ctx, str, X509_FILETYPE_PEM) != 0;
98 }
99 return status;
100 }
101
102 static int X509_load_cert_crl_mem(X509_LOOKUP *ctx, const char *str, int type)
103 {
104 BIO *in = NULL;
105 int status = 0;
106 int count = 0;
107 int i;
108 X509 *x = NULL;
109
110 if (str == NULL) return 1;
111 in = BIO_new(BIO_s_mem());
112 if ((in == NULL) || (BIO_write(in, str, strlen(str)) != strlen(str)) || type != X509_FILETYPE_PEM)
113 {
114 /* this error isn't the same as the real file one, but it'll serve the same purpose */
115 X509err(X509_F_X509_LOAD_CERT_FILE,ERR_R_SYS_LIB);
116 goto err;
117 }
118
119 for (;;)
120 {
121 x=PEM_read_bio_X509_AUX(in,NULL,NULL,NULL);
122 if (x == NULL)
123 {
124 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
125 PEM_R_NO_START_LINE) && (count > 0))
126 {
127 ERR_clear_error();
128 break;
129 }
130 else
131 {
132 X509err(X509_F_X509_LOAD_CERT_FILE,
133 ERR_R_PEM_LIB);
134 goto err;
135 }
136 }
137 i=X509_STORE_add_cert(ctx->store_ctx,x);
138 if (!i) goto err;
139 count++;
140 X509_free(x);
141 x=NULL;
142 }
143 status=count;
144
145 err:
146 if (x != NULL) X509_free(x);
147 if (in != NULL) BIO_free(in);
148 return status;
149
150 }
151
152 static int X509_STORE_load_mem(X509_STORE *ctx, const char *str)
153 {
154 X509_LOOKUP *lookup;
155 if (!str) return 1;
156
157 lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_mem());
158 if (lookup == NULL) return 0;
159 if (X509_LOOKUP_ctrl(lookup,X509_L_FILE_LOAD,str,X509_FILETYPE_PEM, NULL) != 1)
160 return 0;
161 return 1;
162 }
163 int SSL_CTX_load_verify_locations_mem(SSL_CTX * ctx, const char *str)
164 {
165 return X509_STORE_load_mem(ctx->cert_store, str);
166 }