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fixing -Wstrict-aliasing (part 1)

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[anp/hsw] 2024-08-16 00:07:38 +07:00 committed by bol-van
parent a6aff5c0c7
commit 9af54b09dd
2 changed files with 14 additions and 1 deletions
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2
tpws/helpers.c
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@ -154,7 +154,7 @@ bool saconvmapped(struct sockaddr_storage *a)
{
if ((a->ss_family == AF_INET6) && saismapped((struct sockaddr_in6*)a))
{
uint32_t ip4 = *(uint32_t*)(((struct sockaddr_in6*)a)->sin6_addr.s6_addr+12);
uint32_t ip4 = IN6_EXTRACT_MAP4(((struct sockaddr_in6*)a)->sin6_addr.s6_addr);
uint16_t port = ((struct sockaddr_in6*)a)->sin6_port;
a->ss_family = AF_INET;
((struct sockaddr_in*)a)->sin_addr.s_addr = ip4;

13
tpws/helpers.h
View File

@ -55,3 +55,16 @@ typedef struct
} port_filter;
bool pf_in_range(uint16_t port, const port_filter *pf);
bool pf_parse(const char *s, port_filter *pf);
#ifndef IN_LOOPBACK
#define IN_LOOPBACK(a) ((((uint32_t) (a)) & 0xff000000) == 0x7f000000)
#endif
#ifdef __GNUC__
#define IN6_EXTRACT_MAP4(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
(((const uint32_t *) (__a))[3]); }))
#else
#define IN6_EXTRACT_MAP4(a) (((const uint32_t *) (a))[3])
#endif