diff options
Diffstat (limited to 'third_party/heimdal/lib/hx509/env.c')
| -rw-r--r-- | third_party/heimdal/lib/hx509/env.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/hx509/env.c b/third_party/heimdal/lib/hx509/env.c new file mode 100644 index 00000000000..79704382e22 --- /dev/null +++ b/third_party/heimdal/lib/hx509/env.c @@ -0,0 +1,245 @@ +/* + * Copyright (c) 2007 - 2008 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" + +/** + * @page page_env Hx509 environment functions + * + * See the library functions here: @ref hx509_env + */ + +/** + * Add a new key/value pair to the hx509_env. + * + * @param context A hx509 context. + * @param env environment to add the environment 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 + */ + +HX509_LIB_FUNCTION int HX509_LIB_CALL +hx509_env_add(hx509_context context, hx509_env *env, + const char *key, const char *value) +{ + hx509_env n; + + n = malloc(sizeof(*n)); + if (n == NULL) { + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + + n->type = env_string; + n->next = NULL; + n->name = strdup(key); + if (n->name == NULL) { + free(n); + return ENOMEM; + } + n->u.string = strdup(value); + if (n->u.string == NULL) { + free(n->name); + free(n); + return ENOMEM; + } + + /* add to tail */ + if (*env) { + hx509_env e = *env; + while (e->next) + e = e->next; + e->next = n; + } else + *env = n; + + return 0; +} + +/** + * Add a new key/binding pair to the hx509_env. + * + * @param context A hx509 context. + * @param env environment to add the environment variable too. + * @param key key to add + * @param list binding list to add + * + * @return An hx509 error code, see hx509_get_error_string(). + * + * @ingroup hx509_env + */ + +HX509_LIB_FUNCTION int HX509_LIB_CALL +hx509_env_add_binding(hx509_context context, hx509_env *env, + const char *key, hx509_env list) +{ + hx509_env n; + + n = malloc(sizeof(*n)); + if (n == NULL) { + hx509_set_error_string(context, 0, ENOMEM, "out of memory"); + return ENOMEM; + } + + n->type = env_list; + n->next = NULL; + n->name = strdup(key); + if (n->name == NULL) { + free(n); + return ENOMEM; + } + n->u.list = list; + + /* add to tail */ + if (*env) { + hx509_env e = *env; + while (e->next) + e = e->next; + e->next = n; + } else + *env = n; + + return 0; +} + + +/** + * Search the hx509_env for a length based key. + * + * @param context A hx509 context. + * @param env environment to add the environment 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 + */ + +HX509_LIB_FUNCTION const char * HX509_LIB_CALL +hx509_env_lfind(hx509_context context, hx509_env env, + const char *key, size_t len) +{ + while(env) { + if (strncmp(key, env->name ,len) == 0 + && env->name[len] == '\0' && env->type == env_string) + return env->u.string; + env = env->next; + } + return NULL; +} + +/** + * Search the hx509_env for a key. + * + * @param context A hx509 context. + * @param env environment to add the environment variable too. + * @param key key to search for. + * + * @return the value if the key is found, NULL otherwise. + * + * @ingroup hx509_env + */ + +HX509_LIB_FUNCTION const char * HX509_LIB_CALL +hx509_env_find(hx509_context context, hx509_env env, const char *key) +{ + while(env) { + if (strcmp(key, env->name) == 0 && env->type == env_string) + return env->u.string; + env = env->next; + } + return NULL; +} + +/** + * Search the hx509_env for a binding. + * + * @param context A hx509 context. + * @param env environment to add the environment variable too. + * @param key key to search for. + * + * @return the binding if the key is found, NULL if not found. + * + * @ingroup hx509_env + */ + +hx509_env +hx509_env_find_binding(hx509_context context, + hx509_env env, + const char *key) +{ + while(env) { + if (strcmp(key, env->name) == 0 && env->type == env_list) + return env->u.list; + env = env->next; + } + return NULL; +} + +static void +env_free(hx509_env b) +{ + while(b) { + hx509_env next = b->next; + + if (b->type == env_string) + free(b->u.string); + else if (b->type == env_list) + env_free(b->u.list); + + free(b->name); + free(b); + b = next; + } +} + +/** + * Free an hx509_env environment context. + * + * @param env the environment to free. + * + * @ingroup hx509_env + */ + +HX509_LIB_FUNCTION void HX509_LIB_CALL +hx509_env_free(hx509_env *env) +{ + if (*env) + env_free(*env); + *env = NULL; +} |