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8f4fac7f GT |
1 | /* dso_win32.c */ |
2 | /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL | |
3 | * project 2000. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2000 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
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 | |
18 | * distribution. | |
19 | * | |
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/)" | |
24 | * | |
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. | |
29 | * | |
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. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
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 | * ==================================================================== | |
52 | * | |
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). | |
56 | * | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
22a41547 | 60 | #include <string.h> |
8f4fac7f GT |
61 | #include "cryptlib.h" |
62 | #include <openssl/dso.h> | |
63 | ||
bc36ee62 | 64 | #ifndef OPENSSL_SYS_WIN32 |
8f4fac7f GT |
65 | DSO_METHOD *DSO_METHOD_win32(void) |
66 | { | |
67 | return NULL; | |
68 | } | |
69 | #else | |
70 | ||
b9e63915 GT |
71 | /* Part of the hack in "win32_load" ... */ |
72 | #define DSO_MAX_TRANSLATED_SIZE 256 | |
73 | ||
51c8dc37 | 74 | static int win32_load(DSO *dso); |
8f4fac7f | 75 | static int win32_unload(DSO *dso); |
e9a68cfb GT |
76 | static void *win32_bind_var(DSO *dso, const char *symname); |
77 | static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname); | |
8f4fac7f | 78 | #if 0 |
e9a68cfb GT |
79 | static int win32_unbind_var(DSO *dso, char *symname, void *symptr); |
80 | static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr); | |
8f4fac7f GT |
81 | static int win32_init(DSO *dso); |
82 | static int win32_finish(DSO *dso); | |
b9e63915 | 83 | static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg); |
75a382bd | 84 | #endif |
51c8dc37 | 85 | static char *win32_name_converter(DSO *dso, const char *filename); |
8f4fac7f GT |
86 | |
87 | static DSO_METHOD dso_meth_win32 = { | |
88 | "OpenSSL 'win32' shared library method", | |
89 | win32_load, | |
90 | win32_unload, | |
e9a68cfb GT |
91 | win32_bind_var, |
92 | win32_bind_func, | |
8f4fac7f GT |
93 | /* For now, "unbind" doesn't exist */ |
94 | #if 0 | |
e9a68cfb GT |
95 | NULL, /* unbind_var */ |
96 | NULL, /* unbind_func */ | |
8f4fac7f | 97 | #endif |
75a382bd | 98 | NULL, /* ctrl */ |
51c8dc37 | 99 | win32_name_converter, |
8f4fac7f GT |
100 | NULL, /* init */ |
101 | NULL /* finish */ | |
102 | }; | |
103 | ||
104 | DSO_METHOD *DSO_METHOD_win32(void) | |
105 | { | |
106 | return(&dso_meth_win32); | |
107 | } | |
108 | ||
109 | /* For this DSO_METHOD, our meth_data STACK will contain; | |
110 | * (i) a pointer to the handle (HINSTANCE) returned from | |
b9e63915 | 111 | * LoadLibrary(), and copied. |
8f4fac7f GT |
112 | */ |
113 | ||
51c8dc37 | 114 | static int win32_load(DSO *dso) |
8f4fac7f | 115 | { |
51c8dc37 GT |
116 | HINSTANCE h = NULL, *p = NULL; |
117 | /* See applicable comments from dso_dl.c */ | |
118 | char *filename = DSO_convert_filename(dso, NULL); | |
119 | ||
120 | if(filename == NULL) | |
b9e63915 | 121 | { |
51c8dc37 GT |
122 | DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME); |
123 | goto err; | |
b9e63915 | 124 | } |
51c8dc37 | 125 | h = LoadLibrary(filename); |
8f4fac7f GT |
126 | if(h == NULL) |
127 | { | |
128 | DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED); | |
51c8dc37 | 129 | goto err; |
8f4fac7f | 130 | } |
26a3a48d | 131 | p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE)); |
8f4fac7f GT |
132 | if(p == NULL) |
133 | { | |
134 | DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE); | |
51c8dc37 | 135 | goto err; |
8f4fac7f GT |
136 | } |
137 | *p = h; | |
138 | if(!sk_push(dso->meth_data, (char *)p)) | |
139 | { | |
140 | DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR); | |
51c8dc37 | 141 | goto err; |
8f4fac7f | 142 | } |
51c8dc37 GT |
143 | /* Success */ |
144 | dso->loaded_filename = filename; | |
8f4fac7f | 145 | return(1); |
51c8dc37 GT |
146 | err: |
147 | /* Cleanup !*/ | |
148 | if(filename != NULL) | |
149 | OPENSSL_free(filename); | |
150 | if(p != NULL) | |
151 | OPENSSL_free(p); | |
152 | if(h != NULL) | |
153 | FreeLibrary(h); | |
154 | return(0); | |
8f4fac7f GT |
155 | } |
156 | ||
157 | static int win32_unload(DSO *dso) | |
158 | { | |
159 | HINSTANCE *p; | |
160 | if(dso == NULL) | |
161 | { | |
162 | DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER); | |
163 | return(0); | |
164 | } | |
165 | if(sk_num(dso->meth_data) < 1) | |
ebbaebf7 | 166 | return(1); |
8f4fac7f GT |
167 | p = (HINSTANCE *)sk_pop(dso->meth_data); |
168 | if(p == NULL) | |
169 | { | |
170 | DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE); | |
171 | return(0); | |
172 | } | |
8ba92cfe | 173 | if(!FreeLibrary(*p)) |
8f4fac7f GT |
174 | { |
175 | DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED); | |
176 | /* We should push the value back onto the stack in | |
177 | * case of a retry. */ | |
178 | sk_push(dso->meth_data, (char *)p); | |
179 | return(0); | |
180 | } | |
181 | /* Cleanup */ | |
26a3a48d | 182 | OPENSSL_free(p); |
8f4fac7f GT |
183 | return(1); |
184 | } | |
185 | ||
e9a68cfb GT |
186 | /* Using GetProcAddress for variables? TODO: Check this out in |
187 | * the Win32 API docs, there's probably a variant for variables. */ | |
188 | static void *win32_bind_var(DSO *dso, const char *symname) | |
8f4fac7f GT |
189 | { |
190 | HINSTANCE *ptr; | |
191 | void *sym; | |
192 | ||
e9a68cfb | 193 | if((dso == NULL) || (symname == NULL)) |
8f4fac7f | 194 | { |
e9a68cfb GT |
195 | DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER); |
196 | return(NULL); | |
8f4fac7f GT |
197 | } |
198 | if(sk_num(dso->meth_data) < 1) | |
199 | { | |
e9a68cfb GT |
200 | DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR); |
201 | return(NULL); | |
8f4fac7f GT |
202 | } |
203 | ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1); | |
204 | if(ptr == NULL) | |
205 | { | |
e9a68cfb GT |
206 | DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE); |
207 | return(NULL); | |
8f4fac7f GT |
208 | } |
209 | sym = GetProcAddress(*ptr, symname); | |
210 | if(sym == NULL) | |
211 | { | |
e9a68cfb GT |
212 | DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE); |
213 | return(NULL); | |
8f4fac7f | 214 | } |
e9a68cfb GT |
215 | return(sym); |
216 | } | |
217 | ||
218 | static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname) | |
219 | { | |
220 | HINSTANCE *ptr; | |
221 | void *sym; | |
222 | ||
223 | if((dso == NULL) || (symname == NULL)) | |
224 | { | |
225 | DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER); | |
226 | return(NULL); | |
227 | } | |
228 | if(sk_num(dso->meth_data) < 1) | |
229 | { | |
230 | DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR); | |
231 | return(NULL); | |
232 | } | |
233 | ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1); | |
234 | if(ptr == NULL) | |
235 | { | |
236 | DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE); | |
237 | return(NULL); | |
238 | } | |
239 | sym = GetProcAddress(*ptr, symname); | |
240 | if(sym == NULL) | |
241 | { | |
242 | DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE); | |
243 | return(NULL); | |
244 | } | |
245 | return((DSO_FUNC_TYPE)sym); | |
8f4fac7f GT |
246 | } |
247 | ||
51c8dc37 GT |
248 | static char *win32_name_converter(DSO *dso, const char *filename) |
249 | { | |
250 | char *translated; | |
251 | int len, transform; | |
252 | ||
253 | len = strlen(filename); | |
254 | transform = ((strstr(filename, "/") == NULL) && | |
255 | (strstr(filename, "\\") == NULL) && | |
256 | (strstr(filename, ":") == NULL)); | |
257 | if(transform) | |
258 | /* We will convert this to "%s.dll" */ | |
259 | translated = OPENSSL_malloc(len + 5); | |
260 | else | |
261 | /* We will simply duplicate filename */ | |
262 | translated = OPENSSL_malloc(len + 1); | |
263 | if(translated == NULL) | |
264 | { | |
265 | DSOerr(DSO_F_WIN32_NAME_CONVERTER, | |
266 | DSO_R_NAME_TRANSLATION_FAILED); | |
267 | return(NULL); | |
268 | } | |
269 | if(transform) | |
270 | sprintf(translated, "%s.dll", filename); | |
271 | else | |
272 | sprintf(translated, "%s", filename); | |
273 | return(translated); | |
274 | } | |
275 | ||
bc36ee62 | 276 | #endif /* OPENSSL_SYS_WIN32 */ |