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-rw-r--r--src/posttls-finger/tlsmgrmem.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/posttls-finger/tlsmgrmem.c b/src/posttls-finger/tlsmgrmem.c
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+++ b/src/posttls-finger/tlsmgrmem.c
@@ -0,0 +1,143 @@
+/*++
+/* NAME
+/* tlsmgrmem 3
+/* SUMMARY
+/* Memory-based TLS manager interface for tlsfinger(1).
+/* SYNOPSIS
+/* #ifdef USE_TLS
+/* #include <tlsmgrmem.h>
+/*
+/* void tlsmgrmem_disable()
+/*
+/* void tlsmgrmem_status(enable, count, hits)
+/* int *enable;
+/* int *count;
+/* int *hits;
+/*
+/* void tlsmgrmem_flush()
+/* #endif
+/* DESCRIPTION
+/* tlsmgrmem_disable() disables the in-memory TLS session cache.
+/*
+/* tlsmgrmem_status() reports whether the cache is enabled, the
+/* number of entries in the cache, and the number of cache hits.
+/* If any of the return pointers are null, that item is not reported.
+/*
+/* tlsmgrmem_flush() flushes any cached data and frees the cache.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Viktor Dukhovni
+/*--*/
+
+#include <sys_defs.h>
+
+#ifdef USE_TLS
+#include <htable.h>
+#include <vstring.h>
+#include <tls_mgr.h>
+
+#include "tlsmgrmem.h"
+
+static HTABLE *tls_cache;
+static int cache_enabled = 1;
+static int cache_count;
+static int cache_hits;
+typedef void (*free_func) (void *);
+static free_func free_value = (free_func) vstring_free;
+
+void tlsmgrmem_disable(void)
+{
+ cache_enabled = 0;
+}
+
+void tlsmgrmem_flush(void)
+{
+ if (!tls_cache)
+ return;
+ htable_free(tls_cache, free_value);
+}
+
+void tlsmgrmem_status(int *enabled, int *count, int *hits)
+{
+ if (enabled)
+ *enabled = cache_enabled;
+ if (count)
+ *count = cache_count;
+ if (hits)
+ *hits = cache_hits;
+}
+
+/* tls_mgr_* - Local cache and stubs that do not talk to the TLS manager */
+
+int tls_mgr_seed(VSTRING *buf, int len)
+{
+ return (TLS_MGR_STAT_OK);
+}
+
+int tls_mgr_policy(const char *unused_type, int *cachable, int *timeout)
+{
+ if (cache_enabled && tls_cache == 0)
+ tls_cache = htable_create(1);
+ *cachable = cache_enabled;
+ *timeout = TLS_SESSION_LIFEMIN;
+ return (TLS_MGR_STAT_OK);
+}
+
+int tls_mgr_lookup(const char *unused_type, const char *key, VSTRING *buf)
+{
+ VSTRING *s;
+
+ if (tls_cache == 0)
+ return TLS_MGR_STAT_ERR;
+
+ if ((s = (VSTRING *) htable_find(tls_cache, key)) == 0)
+ return TLS_MGR_STAT_ERR;
+
+ vstring_memcpy(buf, vstring_str(s), VSTRING_LEN(s));
+
+ ++cache_hits;
+ return (TLS_MGR_STAT_OK);
+}
+
+int tls_mgr_update(const char *unused_type, const char *key,
+ const char *buf, ssize_t len)
+{
+ HTABLE_INFO *ent;
+ VSTRING *s;
+
+ if (tls_cache == 0)
+ return TLS_MGR_STAT_ERR;
+
+ if ((ent = htable_locate(tls_cache, key)) == 0) {
+ s = vstring_alloc(len);
+ ent = htable_enter(tls_cache, key, (void *) s);
+ } else {
+ s = (VSTRING *) ent->value;
+ }
+ vstring_memcpy(s, buf, len);
+
+ ++cache_count;
+ return (TLS_MGR_STAT_OK);
+}
+
+int tls_mgr_delete(const char *unused_type, const char *key)
+{
+ if (tls_cache == 0)
+ return TLS_MGR_STAT_ERR;
+
+ if (htable_locate(tls_cache, key)) {
+ htable_delete(tls_cache, key, free_value);
+ --cache_count;
+ }
+ return (TLS_MGR_STAT_OK);
+}
+
+#endif