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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
commit | b7c15c31519dc44c1f691e0466badd556ffe9423 (patch) | |
tree | f944572f288bab482a615e09af627d9a2b6727d8 /src/posttls-finger/tlsmgrmem.c | |
parent | Initial commit. (diff) | |
download | postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip |
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/posttls-finger/tlsmgrmem.c')
-rw-r--r-- | src/posttls-finger/tlsmgrmem.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/posttls-finger/tlsmgrmem.c b/src/posttls-finger/tlsmgrmem.c new file mode 100644 index 0000000..bfbc3a1 --- /dev/null +++ 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 |