1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "apr_arch_dso.h"
18 #include "apr_strings.h"
19 #include "apr_portable.h"
20 #include <stdio.h>
21 #include <string.h>
22
23 #if APR_HAS_DSO
24
dso_cleanup(void * thedso)25 static apr_status_t dso_cleanup(void *thedso)
26 {
27 apr_dso_handle_t *dso = thedso;
28 int rc;
29
30 if (dso->handle == 0)
31 return APR_SUCCESS;
32
33 rc = DosFreeModule(dso->handle);
34
35 if (rc == 0)
36 dso->handle = 0;
37
38 return APR_FROM_OS_ERROR(rc);
39 }
40
41
apr_dso_load(apr_dso_handle_t ** res_handle,const char * path,apr_pool_t * ctx)42 APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle, const char *path, apr_pool_t *ctx)
43 {
44 char failed_module[200];
45 HMODULE handle;
46 int rc;
47
48 *res_handle = apr_pcalloc(ctx, sizeof(**res_handle));
49 (*res_handle)->cont = ctx;
50 (*res_handle)->load_error = APR_SUCCESS;
51 (*res_handle)->failed_module = NULL;
52
53 if ((rc = DosLoadModule(failed_module, sizeof(failed_module), path, &handle)) != 0) {
54 (*res_handle)->load_error = APR_FROM_OS_ERROR(rc);
55 (*res_handle)->failed_module = apr_pstrdup(ctx, failed_module);
56 return APR_FROM_OS_ERROR(rc);
57 }
58
59 (*res_handle)->handle = handle;
60 apr_pool_cleanup_register(ctx, *res_handle, dso_cleanup, apr_pool_cleanup_null);
61 return APR_SUCCESS;
62 }
63
64
65
apr_dso_unload(apr_dso_handle_t * handle)66 APR_DECLARE(apr_status_t) apr_dso_unload(apr_dso_handle_t *handle)
67 {
68 return apr_pool_cleanup_run(handle->cont, handle, dso_cleanup);
69 }
70
71
72
apr_dso_sym(apr_dso_handle_sym_t * ressym,apr_dso_handle_t * handle,const char * symname)73 APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym,
74 apr_dso_handle_t *handle,
75 const char *symname)
76 {
77 PFN func;
78 int rc;
79
80 if (symname == NULL || ressym == NULL)
81 return APR_ESYMNOTFOUND;
82
83 if ((rc = DosQueryProcAddr(handle->handle, 0, symname, &func)) != 0) {
84 handle->load_error = APR_FROM_OS_ERROR(rc);
85 return handle->load_error;
86 }
87
88 *ressym = func;
89 return APR_SUCCESS;
90 }
91
92
93
apr_dso_error(apr_dso_handle_t * dso,char * buffer,apr_size_t buflen)94 APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *dso, char *buffer, apr_size_t buflen)
95 {
96 char message[200];
97 apr_strerror(dso->load_error, message, sizeof(message));
98
99 if (dso->failed_module != NULL) {
100 strcat(message, " (");
101 strcat(message, dso->failed_module);
102 strcat(message, ")");
103 }
104
105 apr_cpystrn(buffer, message, buflen);
106 return buffer;
107 }
108
109
110
apr_os_dso_handle_put(apr_dso_handle_t ** aprdso,apr_os_dso_handle_t osdso,apr_pool_t * pool)111 APR_DECLARE(apr_status_t) apr_os_dso_handle_put(apr_dso_handle_t **aprdso,
112 apr_os_dso_handle_t osdso,
113 apr_pool_t *pool)
114 {
115 *aprdso = apr_pcalloc(pool, sizeof **aprdso);
116 (*aprdso)->handle = osdso;
117 (*aprdso)->cont = pool;
118 (*aprdso)->load_error = APR_SUCCESS;
119 (*aprdso)->failed_module = NULL;
120 return APR_SUCCESS;
121 }
122
123
124
apr_os_dso_handle_get(apr_os_dso_handle_t * osdso,apr_dso_handle_t * aprdso)125 APR_DECLARE(apr_status_t) apr_os_dso_handle_get(apr_os_dso_handle_t *osdso,
126 apr_dso_handle_t *aprdso)
127 {
128 *osdso = aprdso->handle;
129 return APR_SUCCESS;
130 }
131
132 #endif
133