1 /* 2 * Copyright (c) 2007 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "hx_locl.h" 35 RCSID("$Id: env.c 22349 2007-12-26 19:32:49Z lha $"); 36 37 /** 38 * @page page_env Hx509 enviroment functions 39 * 40 * See the library functions here: @ref hx509_env 41 */ 42 43 struct hx509_env { 44 struct { 45 char *key; 46 char *value; 47 } *val; 48 size_t len; 49 }; 50 51 /** 52 * Allocate a new hx509_env container object. 53 * 54 * @param context A hx509 context. 55 * @param env return a hx509_env structure, free with hx509_env_free(). 56 * 57 * @return An hx509 error code, see hx509_get_error_string(). 58 * 59 * @ingroup hx509_env 60 */ 61 62 int 63 hx509_env_init(hx509_context context, hx509_env *env) 64 { 65 *env = calloc(1, sizeof(**env)); 66 if (*env == NULL) { 67 hx509_set_error_string(context, 0, ENOMEM, "out of memory"); 68 return ENOMEM; 69 } 70 return 0; 71 } 72 73 /** 74 * Add a new key/value pair to the hx509_env. 75 * 76 * @param context A hx509 context. 77 * @param env enviroment to add the enviroment variable too. 78 * @param key key to add 79 * @param value value to add 80 * 81 * @return An hx509 error code, see hx509_get_error_string(). 82 * 83 * @ingroup hx509_env 84 */ 85 86 int 87 hx509_env_add(hx509_context context, hx509_env env, 88 const char *key, const char *value) 89 { 90 void *ptr; 91 92 ptr = realloc(env->val, sizeof(env->val[0]) * (env->len + 1)); 93 if (ptr == NULL) { 94 hx509_set_error_string(context, 0, ENOMEM, "out of memory"); 95 return ENOMEM; 96 } 97 env->val = ptr; 98 env->val[env->len].key = strdup(key); 99 if (env->val[env->len].key == NULL) { 100 hx509_set_error_string(context, 0, ENOMEM, "out of memory"); 101 return ENOMEM; 102 } 103 env->val[env->len].value = strdup(value); 104 if (env->val[env->len].value == NULL) { 105 free(env->val[env->len].key); 106 hx509_set_error_string(context, 0, ENOMEM, "out of memory"); 107 return ENOMEM; 108 } 109 env->len++; 110 return 0; 111 } 112 113 /** 114 * Search the hx509_env for a key. 115 * 116 * @param context A hx509 context. 117 * @param env enviroment to add the enviroment variable too. 118 * @param key key to search for. 119 * @param len length of key. 120 * 121 * @return the value if the key is found, NULL otherwise. 122 * 123 * @ingroup hx509_env 124 */ 125 126 const char * 127 hx509_env_lfind(hx509_context context, hx509_env env, 128 const char *key, size_t len) 129 { 130 size_t i; 131 132 for (i = 0; i < env->len; i++) { 133 char *s = env->val[i].key; 134 if (strncmp(key, s, len) == 0 && s[len] == '\0') 135 return env->val[i].value; 136 } 137 return NULL; 138 } 139 140 /** 141 * Free an hx509_env enviroment context. 142 * 143 * @param env the enviroment to free. 144 * 145 * @ingroup hx509_env 146 */ 147 148 void 149 hx509_env_free(hx509_env *env) 150 { 151 size_t i; 152 153 for (i = 0; i < (*env)->len; i++) { 154 free((*env)->val[i].key); 155 free((*env)->val[i].value); 156 } 157 free((*env)->val); 158 free(*env); 159 *env = NULL; 160 } 161 162