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compare: drygdryg:1224206f400da2d34e813bbc113f929acd5e8aa9
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drygdryg:master
drygdryg:v69.3
drygdryg:v69.2
drygdryg:v69.1
drygdryg:v69
drygdryg:v68
drygdryg:v67
drygdryg:v66
drygdryg:v65
drygdryg:v64

2 Commits
20839d2fe3 ... 1224206f40

Author SHA1 Message Date
[anp/hsw]
1224206f40 fixing -Wstrict-aliasing (part 1) 2024-08-16 00:07:38 +07:00
[anp/hsw]
ff00a2cd0d fixing -Wstrict-aliasing (part 1) 2024-08-15 23:23:18 +07:00
2 changed files with 20 additions and 6 deletions
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13
tpws/helpers.c
View File

@ -10,6 +10,7 @@
#include <ifaddrs.h>
#include <time.h>
#include <sys/stat.h>
#include <netinet/in.h>
char *strncasestr(const char *s,const char *find, size_t slen)
{
@ -132,7 +133,7 @@ void print_addrinfo(const struct addrinfo *ai)
bool saismapped(const struct sockaddr_in6 *sa)
{
// ::ffff:1.2.3.4
return !memcmp(sa->sin6_addr.s6_addr,"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff",12);
return IN6_IS_ADDR_V4MAPPED(sa->sin6_addr.s6_addr);
}
bool samappedcmp(const struct sockaddr_in *sa1,const struct sockaddr_in6 *sa2)
{
@ -154,7 +155,7 @@ 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;
@ -166,14 +167,14 @@ bool saconvmapped(struct sockaddr_storage *a)
bool is_localnet(const struct sockaddr *a)
{
// 0.0.0.0, ::ffff:0.0.0.0 = localhost in linux
return (a->sa_family==AF_INET && (*(char*)&((struct sockaddr_in *)a)->sin_addr.s_addr==127 || !((struct sockaddr_in *)a)->sin_addr.s_addr)) ||
(a->sa_family==AF_INET6 && saismapped((struct sockaddr_in6 *)a) && (((struct sockaddr_in6 *)a)->sin6_addr.s6_addr[12]==127 || !*(uint32_t*)(((struct sockaddr_in6 *)a)->sin6_addr.s6_addr+12)));
// 127.0.0.0/8, ::1 = localhost
return (a->sa_family==AF_INET && IN_LOOPBACK(((struct sockaddr_in *)a)->sin_addr.s_addr)) ||
(a->sa_family==AF_INET6 && IN6_IS_ADDR_LOOPBACK(((struct sockaddr_in6 *)a)->sin6_addr.s6_addr));
}
bool is_linklocal(const struct sockaddr_in6 *a)
{
// fe80::/10
return a->sin6_addr.s6_addr[0]==0xFE && (a->sin6_addr.s6_addr[1] & 0xC0)==0x80;
return IN6_IS_ADDR_LINKLOCAL(a->sin6_addr.s6_addr);
}
bool is_private6(const struct sockaddr_in6* a)
{

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