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 21#include <library.h> 22#include <unistd.h> 23 24APR_DECLARE(apr_status_t) apr_os_dso_handle_put(apr_dso_handle_t **aprdso, 25 apr_os_dso_handle_t osdso, 26 apr_pool_t *pool) 27{ 28 *aprdso = apr_pcalloc(pool, sizeof **aprdso); 29 (*aprdso)->handle = osdso; 30 (*aprdso)->pool = pool; 31 return APR_SUCCESS; 32} 33 34APR_DECLARE(apr_status_t) apr_os_dso_handle_get(apr_os_dso_handle_t *osdso, 35 apr_dso_handle_t *aprdso) 36{ 37 *osdso = aprdso->handle; 38 return APR_SUCCESS; 39} 40 41static apr_status_t dso_cleanup(void *thedso) 42{ 43 apr_dso_handle_t *dso = thedso; 44 sym_list *symbol = NULL; 45 void *NLMHandle = getnlmhandle(); 46 47 if (dso->handle == NULL) 48 return APR_SUCCESS; 49 50 if (dso->symbols != NULL) { 51 symbol = dso->symbols; 52 while (symbol) { 53 UnImportPublicObject(NLMHandle, symbol->symbol); 54 symbol = symbol->next; 55 } 56 } 57 58 if (dlclose(dso->handle) != 0) 59 return APR_EINIT; 60 61 dso->handle = NULL; 62 dso->symbols = NULL; 63 dso->path = NULL; 64 65 return APR_SUCCESS; 66} 67 68APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle, 69 const char *path, apr_pool_t *pool) 70{ 71 72 void *os_handle = NULL; 73 char *fullpath = NULL; 74 apr_status_t rv; 75 76 if ((rv = apr_filepath_merge(&fullpath, NULL, path, 77 APR_FILEPATH_NATIVE, pool)) != APR_SUCCESS) { 78 return rv; 79 } 80 81 os_handle = dlopen(fullpath, RTLD_NOW | RTLD_LOCAL); 82 83 *res_handle = apr_pcalloc(pool, sizeof(**res_handle)); 84 85 if(os_handle == NULL) { 86 (*res_handle)->errormsg = dlerror(); 87 return APR_EDSOOPEN; 88 } 89 90 (*res_handle)->handle = (void*)os_handle; 91 (*res_handle)->pool = pool; 92 (*res_handle)->errormsg = NULL; 93 (*res_handle)->symbols = NULL; 94 (*res_handle)->path = apr_pstrdup(pool, fullpath); 95 96 apr_pool_cleanup_register(pool, *res_handle, dso_cleanup, apr_pool_cleanup_null); 97 98 return APR_SUCCESS; 99} 100 101APR_DECLARE(apr_status_t) apr_dso_unload(apr_dso_handle_t *handle) 102{ 103 return apr_pool_cleanup_run(handle->pool, handle, dso_cleanup); 104} 105 106APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym, 107 apr_dso_handle_t *handle, 108 const char *symname) 109{ 110 sym_list *symbol = NULL; 111 void *retval = dlsym(handle->handle, symname); 112 113 if (retval == NULL) { 114 handle->errormsg = dlerror(); 115 return APR_ESYMNOTFOUND; 116 } 117 118 symbol = apr_pcalloc(handle->pool, sizeof(sym_list)); 119 symbol->next = handle->symbols; 120 handle->symbols = symbol; 121 symbol->symbol = apr_pstrdup(handle->pool, symname); 122 123 *ressym = retval; 124 125 return APR_SUCCESS; 126} 127 128APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *dso, char *buffer, 129 apr_size_t buflen) 130{ 131 if (dso->errormsg) { 132 apr_cpystrn(buffer, dso->errormsg, buflen); 133 return dso->errormsg; 134 } 135 return "No Error"; 136} 137 138