2 /* Written by Richard Levitte (levitte@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
61 #include <openssl/dso.h>
64 DSO_METHOD *DSO_METHOD_dl(void)
72 /* Part of the hack in "dl_load" ... */
73 #define DSO_MAX_TRANSLATED_SIZE 256
75 static int dl_load(DSO *dso, const char *filename);
76 static int dl_unload(DSO *dso);
77 static int dl_bind(DSO *dso, const char *symname, void **symptr);
79 static int dl_unbind(DSO *dso, char *symname, void *symptr);
80 static int dl_init(DSO *dso);
81 static int dl_finish(DSO *dso);
83 static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg);
85 static DSO_METHOD dso_meth_dl = {
86 "OpenSSL 'dl' shared library method",
90 /* For now, "unbind" doesn't exist */
99 DSO_METHOD *DSO_METHOD_dl(void)
101 return(&dso_meth_dl);
104 /* For this DSO_METHOD, our meth_data STACK will contain;
105 * (i) the handle (shl_t) returned from shl_load().
106 * NB: I checked on HPUX11 and shl_t is itself a pointer
107 * type so the cast is safe.
110 static int dl_load(DSO *dso, const char *filename)
113 char translated[DSO_MAX_TRANSLATED_SIZE];
116 /* The same comment as in dlfcn_load applies here. bleurgh. */
117 len = strlen(filename);
118 if((dso->flags & DSO_FLAG_NAME_TRANSLATION) &&
119 (len + 6 < DSO_MAX_TRANSLATED_SIZE) &&
120 (strstr(filename, "/") == NULL))
122 sprintf(translated, "lib%s.so", filename);
123 ptr = shl_load(translated, BIND_IMMEDIATE, NULL);
126 ptr = shl_load(filename, BIND_IMMEDIATE, NULL);
129 DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED);
132 if(!sk_push(dso->meth_data, (char *)ptr))
134 DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR);
141 static int dl_unload(DSO *dso)
146 DSOerr(DSO_F_DL_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
149 if(sk_num(dso->meth_data) < 1)
151 /* Is this statement legal? */
152 ptr = (shl_t)sk_pop(dso->meth_data);
155 DSOerr(DSO_F_DL_UNLOAD,DSO_R_NULL_HANDLE);
156 /* Should push the value back onto the stack in
157 * case of a retry. */
158 sk_push(dso->meth_data, (char *)ptr);
165 static int dl_bind(DSO *dso, const char *symname, void **symptr)
170 if((dso == NULL) || (symptr == NULL) || (symname == NULL))
172 DSOerr(DSO_F_DL_BIND,ERR_R_PASSED_NULL_PARAMETER);
175 if(sk_num(dso->meth_data) < 1)
177 DSOerr(DSO_F_DL_BIND,DSO_R_STACK_ERROR);
180 ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
183 DSOerr(DSO_F_DL_BIND,DSO_R_NULL_HANDLE);
186 if (shl_findsym(ptr, symname, TYPE_UNDEFINED, &sym) < 0)
188 DSOerr(DSO_F_DL_BIND,DSO_R_SYM_FAILURE);
195 static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg)
199 DSOerr(DSO_F_DL_CTRL,ERR_R_PASSED_NULL_PARAMETER);
204 case DSO_CTRL_GET_FLAGS:
206 case DSO_CTRL_SET_FLAGS:
207 dso->flags = (int)larg;
209 case DSO_CTRL_OR_FLAGS:
210 dso->flags |= (int)larg;
215 DSOerr(DSO_F_DL_CTRL,DSO_R_UNKNOWN_COMMAND);