Initial commit

1 files changed, 80 insertions, 0 deletions

diff --git a/libtac/lib/attrib.c b/libtac/lib/attrib.c
new file mode 100644
index 0000000..761cde0
--- /dev/null
+++ b/libtac/lib/attrib.c
@@ -0,0 +1,80 @@
+/* attrib.c - Procedures for handling internal list of attributes
+ *			 for accounting and authorization functions. 
+ * 
+ * Copyright (C) 2010, Pawel Krawczyk <kravietz@ceti.pl> and
+ * Jeroen Nijhof <jeroen@nijhofnet.nl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program - see the file COPYING.
+ *
+ * See `CHANGES' file for revision history.
+ */
+
+#include "tacplus.h"
+#include "libtac.h"
+#include "xalloc.h"
+
+void tac_add_attrib(struct tac_attrib **attr, char *name, char *value) {
+	struct tac_attrib *a;
+	u_char l1 = (u_char) strlen(name);
+	u_char l2 = (u_char) strlen(value);
+	int total_len = l1 + l2 + 1; /* "name" + "=" + "value" */
+
+	if(total_len > 255) {
+			syslog(LOG_WARNING, "%s: attribute `%s' total length exceeds 255 characters, skipping", __FUNCTION__, name);
+			return;
+	}
+	
+	/* initialize the list if application passed us a null pointer */
+	if(*attr == NULL) {
+		*attr = (struct tac_attrib *) xcalloc(1, sizeof(struct tac_attrib));
+		a = *attr;
+	} else {
+		/* find the last allocated block */
+		a = *attr;
+		while(a->next != NULL)
+			a = a->next; /* a holds last allocated block */
+
+		a->next = (struct tac_attrib *) xcalloc(1, sizeof(struct tac_attrib)); 
+		a = a->next; /* set current block pointer to the new one */
+	}
+
+	/* fill the block */
+	a->attr_len=total_len;
+	a->attr = (char *) xcalloc(1, total_len);
+	bcopy(name, a->attr, l1);         /* paste name */
+	*(a->attr+l1)='='; 		          /* insert "=" */
+	bcopy(value, (a->attr+l1+1), l2); /* paste value */
+
+	a->next = NULL; /* make sure it's null */
+
+}
+
+void tac_free_attrib(struct tac_attrib **attr) {
+	struct tac_attrib *a;
+	struct tac_attrib *b;
+
+	if(*attr == NULL)
+			return;
+
+	a  = b = *attr;
+	
+	/* find last allocated block */
+	do {
+			a = b;
+			b = a->next;
+			free(a->attr);
+			free(a);
+	} while (b != NULL);
+
+}