drygdryg/zapret
1
0
Fork 0
mirror of https://github.com/bol-van/zapret.git synced 2024-11-29 21:40:52 +03:00
Code Issues Packages Projects Releases Wiki Activity

tpws: ip6_and use 64-bit and. 128 can cause alignment segfaults

Browse Source
This commit is contained in:
bol-van 2024-10-16 11:21:31 +03:00
parent 33caf4fd4a
commit 6be111f7b7
2 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tpws/helpers.c
View File

@ -321,13 +321,9 @@ __attribute__((optimize ("no-strict-aliasing")))
#endif #endif
void ip6_and(const struct in6_addr * restrict a, const struct in6_addr * restrict b, struct in6_addr * restrict result) void ip6_and(const struct in6_addr * restrict a, const struct in6_addr * restrict b, struct in6_addr * restrict result)
{ {
#ifdef __SIZEOF_INT128__ // int 128 can cause alignment segfaults because sin6_addr in struct sockaddr_in6 is 8-byte aligned, not 16-byte
// gcc and clang have 128 bit int types on some 64-bit archs. take some advantage
*((unsigned __int128*)result->s6_addr) = *((unsigned __int128*)a->s6_addr) & *((unsigned __int128*)b->s6_addr);
#else
((uint64_t*)result->s6_addr)[0] = ((uint64_t*)a->s6_addr)[0] & ((uint64_t*)b->s6_addr)[0]; ((uint64_t*)result->s6_addr)[0] = ((uint64_t*)a->s6_addr)[0] & ((uint64_t*)b->s6_addr)[0];
((uint64_t*)result->s6_addr)[1] = ((uint64_t*)a->s6_addr)[1] & ((uint64_t*)b->s6_addr)[1]; ((uint64_t*)result->s6_addr)[1] = ((uint64_t*)a->s6_addr)[1] & ((uint64_t*)b->s6_addr)[1];
#endif
} }
void str_cidr4(char *s, size_t s_len, const struct cidr4 *cidr) void str_cidr4(char *s, size_t s_len, const struct cidr4 *cidr)

1
tpws/helpers.h
View File

@ -13,7 +13,6 @@ typedef union
{ {
struct sockaddr_in sa4; // size 16 struct sockaddr_in sa4; // size 16
struct sockaddr_in6 sa6; // size 28 struct sockaddr_in6 sa6; // size 28
char _align[32]; // force 16-byte alignment for ip6_and int128 ops
} sockaddr_in46; } sockaddr_in46;
void rtrim(char *s); void rtrim(char *s);