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git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@451 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/krb5/rcache/rc_base.c b/src/lib/krb5/rcache/rc_base.c
new file mode 100644 (file)
index 0000000..9324871
--- /dev/null
+++ b/src/lib/krb5/rcache/rc_base.c
@@ -0,0 +1,93 @@
+/*
+Copyright 1990, Daniel J. Bernstein. All rights reserved.
+
+Please address any questions or comments to the author at brnstnd@acf10.nyu.edu.
+*/
+
+#include <string.h>
+#include <malloc.h>
+extern char *getenv(char *); /* ain't there an include file for this? */
+#ifdef SEMAPHORE
+#include <semaphore.h>
+#endif
+#include "rc_base.h"
+#include "rc_err.h"
+
+static struct krb5_rc_typelist
+ {
+  struct krb5_rc_type *ops;
+  struct krb5_rc_typelist *next;
+ }
+*typehead = (struct krb5_rc_typelist *) 0;
+
+#ifdef SEMAPHORE
+semaphore ex_typelist = 1;
+#endif
+
+krb5_error_code krb5_rc_register_type(struct krb5_rc_type *ops)
+{
+ struct krb5_rc_typelist *t;
+#ifdef SEMAPHORE
+ down(&ex_typelist);
+#endif
+ for (t = typehead;t && strcmp(t->ops->type,ops->type);t = t->next)
+   ;
+#ifdef SEMAPHORE
+ up(&ex_typelist);
+#endif
+ if (t)
+   return KRB5_RC_EXIST;
+ if (!(t = (struct krb5_rc_typelist *) malloc(sizeof(struct krb5_rc_typelist))))
+   return KRB5_RC_MALLOC;
+#ifdef SEMAPHORE
+ down(&ex_typelist);
+#endif
+ t->next = typehead;
+ t->ops = ops;
+ typehead = t;
+#ifdef SEMAPHORE
+ up(&ex_typelist);
+#endif
+ return 0;
+}
+
+krb5_error_code krb5_rc_resolve_type(krb5_RC *id,char *type)
+{
+ struct krb5_rc_typelist *t;
+#ifdef SEMAPHORE
+ down(&ex_typelist);
+#endif
+ for (t = typehead;t && strcmp(t->ops->type,type);t = t->next)
+   ;
+#ifdef SEMAPHORE
+ up(&ex_typelist);
+#endif
+ if (!t)
+   return KRB5_RC_NOTFOUND;
+ /* allocate *id? nah */
+ (*id)->ops = t->ops;
+ return 0;
+}
+
+char *krb5_rc_get_type(krb5_RC id)
+{
+ return id->ops->type;
+}
+
+char *krb5_rc_default_type(void)
+{
+ char *s;
+ if (s = getenv("KRB5RCACHETYPE"))
+   return s;
+ else
+   return "dfl";
+}
+
+char *krb5_rc_default_name(void)
+{
+ char *s;
+ if (s = getenv("KRB5RCACHENAME"))
+   return s;
+ else
+   return (char *) 0;
+}