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Merge pull request #34 from dartvader316/fix-misaligned

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Fix usage of some misaligned pointers
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hufrea 2024-08-05 23:14:04 +03:00 committed by GitHub
commit 4ca7fab3dd
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3 changed files with 12 additions and 8 deletions
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2
extend.c
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@ -90,7 +90,7 @@ int mode_add_get(struct sockaddr_ina *dst, int m)
} }
inline bool check_port(uint16_t *p, struct sockaddr_in6 *dst) static inline bool check_port(uint16_t *p, struct sockaddr_in6 *dst)
{ {
return (dst->sin6_port >= p[0] return (dst->sin6_port >= p[0]
&& dst->sin6_port <= p[1]); && dst->sin6_port <= p[1]);

16
packets.c
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@ -17,6 +17,10 @@
#define ANTOHS(data, i) \ #define ANTOHS(data, i) \
(uint16_t)((data[i] << 8) + (uint8_t)data[i + 1]) (uint16_t)((data[i] << 8) + (uint8_t)data[i + 1])
#define SHTONA(data, i, x) \
data[i] = (uint8_t)(x >> 8); \
data[i + 1] = x & 0xff;
char tls_data[517] = { char tls_data[517] = {
"\x16\x03\x01\x02\x00\x01\x00\x01\xfc\x03\x03\x03\x5f" "\x16\x03\x01\x02\x00\x01\x00\x01\xfc\x03\x03\x03\x5f"
@ -137,10 +141,10 @@ int change_tls_sni(const char *host, char *buffer, size_t bsize)
|| free_sz < diff) { || free_sz < diff) {
return -1; return -1;
} }
*(uint16_t *)(sni + 2) = htons(old_sz + diff + 5); SHTONA(sni, 2, old_sz + diff + 5);
*(uint16_t *)(sni + 4) = htons(old_sz + diff + 3); SHTONA(sni, 4, old_sz + diff + 3);
*(uint16_t *)(sni + 7) = htons(old_sz + diff); SHTONA(sni, 7, old_sz + diff);
*(uint16_t *)(pad + 2) = htons(free_sz - diff); SHTONA(pad, 2, free_sz - diff);
char *host_end = sni + 9 + old_sz; char *host_end = sni + 9 + old_sz;
int oth_sz = bsize - (sni_offs + 9 + old_sz); int oth_sz = bsize - (sni_offs + 9 + old_sz);
@ -410,7 +414,7 @@ int part_tls(char *buffer, size_t bsize, ssize_t n, long pos)
memmove(buffer + 5 + pos + 5, buffer + 5 + pos, n - (5 + pos)); memmove(buffer + 5 + pos + 5, buffer + 5 + pos, n - (5 + pos));
memcpy(buffer + 5 + pos, buffer, 3); memcpy(buffer + 5 + pos, buffer, 3);
*(uint16_t *)(buffer + 3) = htons(pos); SHTONA(buffer, 3, pos);
*(uint16_t *)(buffer + 5 + pos + 3) = htons(r_sz - pos); SHTONA(buffer, 5 + pos + 3, r_sz - pos);
return 5; return 5;
} }

2
proxy.c
View File

@ -274,7 +274,7 @@ int s5_get_addr(char *buffer, size_t n,
addr->in6.sin6_addr = r->i6; addr->in6.sin6_addr = r->i6;
} }
} }
addr->in.sin_port = *(uint16_t *)&buffer[o - 2]; memcpy(&addr->in.sin_port, &buffer[o - 2], sizeof(uint16_t));
return o; return o;
} }