From d1c4602f80e395d1d6ab0453b8f0a6cc10aefadf Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Tue, 16 Jul 2024 01:51:04 +0000 Subject: Refactor dcache, add prep for shibari-cache Signed-off-by: Laurent Bercot --- src/cache/tcpconnection.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/cache/tcpconnection.c (limited to 'src/cache/tcpconnection.c') diff --git a/src/cache/tcpconnection.c b/src/cache/tcpconnection.c new file mode 100644 index 0000000..7c7f714 --- /dev/null +++ b/src/cache/tcpconnection.c @@ -0,0 +1,49 @@ +/* ISC license. */ + +#include + +#include + +#include "shibari-cache-internal.h" + +genset *tcpconn = 0 ; + +static inline int check (char const *key, size_t keylen) +{ + cdb_data data ; + return cdb_find(&confdb, &data, key, keylen) ; +} + +int tcp4_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 tcp6_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