/*
- * Copyright (c) 2007 Kungliga Tekniska Högskolan
+ * Copyright (c) 2007 - 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
*/
#include "hx_locl.h"
-RCSID("$Id: env.c 22349 2007-12-26 19:32:49Z lha $");
+RCSID("$Id: env.c 22677 2008-03-13 17:35:49Z 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.
+ * Add a new key/value pair to the hx509_env.
*
* @param context A hx509 context.
- * @param env return a hx509_env structure, free with hx509_env_free().
+ * @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().
*
*/
int
-hx509_env_init(hx509_context context, hx509_env *env)
+hx509_env_add(hx509_context context, hx509_env *env,
+ const char *key, const char *value)
{
- *env = calloc(1, sizeof(**env));
- if (*env == NULL) {
+ 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/value pair to the hx509_env.
+ * Add a new key/binding 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
+ * @param list binding list to add
*
* @return An hx509 error code, see hx509_get_error_string().
*
*/
int
-hx509_env_add(hx509_context context, hx509_env env,
- const char *key, const char *value)
+hx509_env_add_binding(hx509_context context, hx509_env *env,
+ const char *key, hx509_env list)
{
- void *ptr;
+ hx509_env n;
- ptr = realloc(env->val, sizeof(env->val[0]) * (env->len + 1));
- if (ptr == NULL) {
+ n = malloc(sizeof(*n));
+ if (n == 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");
+
+ n->type = env_list;
+ n->next = NULL;
+ n->name = strdup(key);
+ if (n->name == NULL) {
+ free(n);
return ENOMEM;
}
- env->len++;
+ 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 key.
+ * Search the hx509_env for a length based key.
*
* @param context A hx509 context.
* @param env enviroment to add the enviroment variable too.
hx509_env_lfind(hx509_context context, hx509_env env,
const char *key, size_t len)
{
- size_t i;
+ 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;
+}
- 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;
+/**
+ * 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.
+ *
+ * @return the value if the key is found, NULL otherwise.
+ *
+ * @ingroup hx509_env
+ */
+
+const char *
+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 enviroment to add the enviroment 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 enviroment context.
*
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);
+ if (*env)
+ env_free(*env);
*env = NULL;
}
-
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