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Add more error handlers

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Vadim Vetrov 2024-07-23 22:24:43 +03:00
parent 8b4b14bddf
commit 692add84c5
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GPG Key ID: E8A308689D7A73A5
1 changed files with 22 additions and 5 deletions
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27
youtubeUnblock.c
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@ -218,7 +218,14 @@ static int ipv4_frag(struct pkt_buff *pktb, size_t payload_offset,
nfq_ip_set_checksum(f2_hdr);
*frag1 = pktb_alloc(AF_INET, buff1, f1_dlen, 0);
if (*frag1 == NULL)
return -1;
*frag2 = pktb_alloc(AF_INET, buff2, f2_dlen, 0);
if (*frag2 == NULL) {
pktb_free(*frag1);
return -1;
}
return 0;
}
@ -291,7 +298,15 @@ static int tcp4_frag(struct pkt_buff *pktb, size_t payload_offset,
nfq_tcp_compute_checksum_ipv4(s2_tcph, s2_hdr);
*seg1 = pktb_alloc(AF_INET, buff1, s1_dlen, 0);
if (*seg1 == NULL)
return -1;
*seg2 = pktb_alloc(AF_INET, buff2, s2_dlen, 0);
if (*seg2 == NULL) {
pktb_free(*seg1);
return -1;
}
return 0;
}
@ -308,9 +323,12 @@ static int send_raw_socket(struct pkt_buff *pktb) {
struct pkt_buff *buff2;
#ifdef USE_TCP_SEGMENTATION
tcp4_frag(pktb, AVAILABLE_MTU-128, &buff1, &buff2);
if (tcp4_frag(pktb, AVAILABLE_MTU-128, &buff1, &buff2) < 0)
return -1;
#else
ipv4_frag(pktb, AVAILABLE_MTU-128, &buff1, &buff2);
if (ipv4_frag(pktb, AVAILABLE_MTU-128, &buff1, &buff2) < 0)
return -1;
#endif
int sent = 0;
@ -335,7 +353,6 @@ static int send_raw_socket(struct pkt_buff *pktb) {
return sent;
}
struct iphdr *iph = nfq_ip_get_hdr(pktb);
if (iph == NULL)
return -1;
@ -350,6 +367,7 @@ static int send_raw_socket(struct pkt_buff *pktb) {
if (tcph != NULL) {
sin_port = tcph->dest;
errno = 0;
} else if (udph != NULL) {
sin_port = udph->dest;
} else {
@ -643,9 +661,8 @@ static int process_packet(const struct packet_data packet) {
size_t ipd_offset = ((char *)data - (char *)tcph) + vrd.sni_offset;
size_t mid_offset = ipd_offset + vrd.sni_len / 2;
mid_offset += 8 - mid_offset % 8;
if (ipv4_frag(pktb, mid_offset, &frag1, &frag2) < 0) {
perror("ipv4_frag");
goto fallback;