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Fix #17

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Vadim Vetrov 2024-08-02 15:43:03 +03:00
parent 72a7c21b17
commit 709fc4c3be
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1 changed files with 9 additions and 6 deletions
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15
youtubeUnblock.c
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@ -577,14 +577,20 @@ nextMessage:
}
static struct pkt_buff *gen_fake_sni(const struct iphdr *iph, const struct tcphdr *tcph) {
uint8_t sniph_buf[60];
int ip_len = iph->ihl * 4;
int tcp_len = tcph->doff * 4;
size_t pkt_size = ip_len + sizeof(fake_sni);
memcpy(sniph_buf, iph, ip_len);
struct iphdr *sniph = (struct iphdr *)sniph_buf;
sniph->protocol = IPPROTO_TCP;
sniph->tot_len = htons(pkt_size);
struct pkt_buff *pkt = pktb_alloc(AF_INET, NULL, 0, pkt_size);
if (pkt == NULL) return NULL;
pktb_mangle(pkt, 0, 0, 0, (const char *)iph, ip_len);
pktb_mangle(pkt, 0, 0, 0, (char *)sniph_buf, ip_len);
pktb_mangle(pkt, ip_len, 0, 0, fake_sni, sizeof(fake_sni));
int ret = 0;
@ -594,9 +600,6 @@ static struct pkt_buff *gen_fake_sni(const struct iphdr *iph, const struct tcphd
goto err;
}
niph->protocol = IPPROTO_TCP;
niph->tot_len = htons(pkt_size);
ret = nfq_ip_set_transport_header(pkt, niph);
if (ret < 0) {
perror("gen_fake_sni: set transport header");