key-value pair help functions

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19878 ec53bebd-3082-4978-b11e-865c3cabbd6b
2007-01-13 00:58:39 +00:00
parent 3669c75ddd
commit 7604f5b544
1 changed files with 111 additions and 0 deletions
--- a/lib/hx509/env.c
+++ b/lib/hx509/env.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2007 Kungliga Tekniska H<>gskolan
+ * (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("$Id$");
+
+struct hx509_env {
+    struct {
+	char *key;
+	char *value;
+    } *val;
+    size_t len;
+};
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+
+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;
+}
+