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Diffstat (limited to 'crypto/heimdal/lib/hx509/env.c')
| -rw-r--r-- | crypto/heimdal/lib/hx509/env.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/hx509/env.c b/crypto/heimdal/lib/hx509/env.c new file mode 100644 index 0000000..f868c22 --- /dev/null +++ b/crypto/heimdal/lib/hx509/env.c @@ -0,0 +1,161 @@ +/* + * Copyright (c) 2007 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "hx_locl.h" +RCSID("$Id: env.c 22349 2007-12-26 19:32:49Z lha $"); + +/** + * @page page_env Hx509 enviroment functions + * + * See the library functions here: @ref hx509_env + */ + +struct hx509_env { + struct { + char *key; + char *value; + } *val; + size_t len; +}; + +/** + * Allocate a new hx509_env container object. + * + * @param context A hx509 context. + * @param env return a hx509_env structure, free with hx509_env_free(). + * + * @return An hx509 error code, see hx509_get_error_string(). + * + * @ingroup hx509_env + */ + +int +hx509_env_init(hx509_context context, hx509_env *env) +{ + *env = calloc(1, sizeof(**env)); + if (*env == NULL) { + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + return 0; +} + +/** + * Add a new key/value pair to the hx509_env. + * + * @param context A hx509 context. + * @param env enviroment to add the enviroment variable too. + * @param key key to add + * @param value value to add + * + * @return An hx509 error code, see hx509_get_error_string(). + * + * @ingroup hx509_env + */ + +int +hx509_env_add(hx509_context context, hx509_env env, + const char *key, const char *value) +{ + void *ptr; + + ptr = realloc(env->val, sizeof(env->val[0]) * (env->len + 1)); + if (ptr == NULL) { + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + env->val = ptr; + env->val[env->len].key = strdup(key); + if (env->val[env->len].key == NULL) { + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + env->val[env->len].value = strdup(value); + if (env->val[env->len].value == NULL) { + free(env->val[env->len].key); + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + env->len++; + return 0; +} + +/** + * Search the hx509_env for a key. + * + * @param context A hx509 context. + * @param env enviroment to add the enviroment variable too. + * @param key key to search for. + * @param len length of key. + * + * @return the value if the key is found, NULL otherwise. + * + * @ingroup hx509_env + */ + +const char * +hx509_env_lfind(hx509_context context, hx509_env env, + const char *key, size_t len) +{ + size_t i; + + for (i = 0; i < env->len; i++) { + char *s = env->val[i].key; + if (strncmp(key, s, len) == 0 && s[len] == '\0') + return env->val[i].value; + } + return NULL; +} + +/** + * Free an hx509_env enviroment context. + * + * @param env the enviroment to free. + * + * @ingroup hx509_env + */ + +void +hx509_env_free(hx509_env *env) +{ + size_t i; + + for (i = 0; i < (*env)->len; i++) { + free((*env)->val[i].key); + free((*env)->val[i].value); + } + free((*env)->val); + free(*env); + *env = NULL; +} + |
