From e5cc55570c2c986c71fc75bcde93620598db7be4 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Thu, 18 Jul 2024 20:55:16 +0000 Subject: Add accept directive to cache-config Signed-off-by: Laurent Bercot --- src/cache/access.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/cache/access.c (limited to 'src/cache/access.c') diff --git a/src/cache/access.c b/src/cache/access.c new file mode 100644 index 0000000..8f87125 --- /dev/null +++ b/src/cache/access.c @@ -0,0 +1,47 @@ +/* ISC license. */ + +#include + +#include + +#include "shibari-cache-internal.h" + +static inline int check (char const *key, size_t keylen) +{ + cdb_data data ; + return cdb_find(&confdb, &data, key, keylen) ; +} + +int ip4_access (char const *ip) +{ + int r ; + char key[9] = "A4:" ; + uint8_t i = 33 ; + memcpy(key+4, ip, 4) ; + key[8] = 0 ; + while (i--) + { + key[3] = i ; + key[4 + (i>>3)] &= ~(1U << (7 - (i & 7))) ; + r = check(key, 8) ; + if (r) return r ; + } + return 0 ; +} + +int ip6_access (char const *ip) +{ + int r ; + char key[21] = "A6:" ; + uint8_t i = 129 ; + memcpy(key+4, ip, 16) ; + key[20] = 0 ; + while (i--) + { + key[3] = i ; + key[4 + (i>>3)] &= ~(1U << (7 - (i & 7))) ; + r = check(key, 20) ; + if (r) return r ; + } + return 0 ; +} -- cgit v1.3.1