162 lines
4.2 KiB
C
162 lines
4.2 KiB
C
/*
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* Copyright (c) 2007 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "hx_locl.h"
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RCSID("$Id: env.c 22349 2007-12-26 19:32:49Z lha $");
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/**
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* @page page_env Hx509 enviroment functions
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*
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* See the library functions here: @ref hx509_env
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*/
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struct hx509_env {
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struct {
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char *key;
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char *value;
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} *val;
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size_t len;
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};
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/**
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* Allocate a new hx509_env container object.
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*
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* @param context A hx509 context.
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* @param env return a hx509_env structure, free with hx509_env_free().
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*
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* @return An hx509 error code, see hx509_get_error_string().
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*
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* @ingroup hx509_env
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*/
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int
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hx509_env_init(hx509_context context, hx509_env *env)
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{
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*env = calloc(1, sizeof(**env));
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if (*env == NULL) {
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hx509_set_error_string(context, 0, ENOMEM, "out of memory");
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return ENOMEM;
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}
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return 0;
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}
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/**
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* Add a new key/value pair to the hx509_env.
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*
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* @param context A hx509 context.
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* @param env enviroment to add the enviroment variable too.
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* @param key key to add
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* @param value value to add
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*
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* @return An hx509 error code, see hx509_get_error_string().
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*
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* @ingroup hx509_env
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*/
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int
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hx509_env_add(hx509_context context, hx509_env env,
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const char *key, const char *value)
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{
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void *ptr;
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ptr = realloc(env->val, sizeof(env->val[0]) * (env->len + 1));
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if (ptr == NULL) {
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hx509_set_error_string(context, 0, ENOMEM, "out of memory");
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return ENOMEM;
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}
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env->val = ptr;
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env->val[env->len].key = strdup(key);
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if (env->val[env->len].key == NULL) {
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hx509_set_error_string(context, 0, ENOMEM, "out of memory");
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return ENOMEM;
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}
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env->val[env->len].value = strdup(value);
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if (env->val[env->len].value == NULL) {
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free(env->val[env->len].key);
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hx509_set_error_string(context, 0, ENOMEM, "out of memory");
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return ENOMEM;
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}
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env->len++;
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return 0;
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}
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/**
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* Search the hx509_env for a key.
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*
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* @param context A hx509 context.
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* @param env enviroment to add the enviroment variable too.
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* @param key key to search for.
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* @param len length of key.
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*
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* @return the value if the key is found, NULL otherwise.
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*
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* @ingroup hx509_env
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*/
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const char *
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hx509_env_lfind(hx509_context context, hx509_env env,
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const char *key, size_t len)
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{
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size_t i;
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for (i = 0; i < env->len; i++) {
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char *s = env->val[i].key;
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if (strncmp(key, s, len) == 0 && s[len] == '\0')
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return env->val[i].value;
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}
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return NULL;
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}
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/**
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* Free an hx509_env enviroment context.
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*
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* @param env the enviroment to free.
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*
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* @ingroup hx509_env
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*/
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void
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hx509_env_free(hx509_env *env)
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{
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size_t i;
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for (i = 0; i < (*env)->len; i++) {
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free((*env)->val[i].key);
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free((*env)->val[i].value);
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}
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free((*env)->val);
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free(*env);
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*env = NULL;
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}
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