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Add compatibility with v0.2.2

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This commit is contained in:
Vadim Vetrov
2024-08-17 12:51:53 +03:00
parent 6cf2ec5504
commit b434ef4b7f
5 changed files with 74 additions and 7 deletions
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41
mangle.c
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@@ -106,9 +106,24 @@ int process_tcp4_packet(const uint8_t *raw_payload, uint32_t raw_payload_len) {
ipd_offset = vrd.sni_offset;
mid_offset = ipd_offset + vrd.sni_len / 2;
uint32_t poses[] = { 2, mid_offset };
uint32_t poses[2];
int cnt = 0;
ret = send_tcp4_frags(payload, payload_len, poses, 2, 0);
if (config.frag_sni_pos && dlen > config.frag_sni_pos) {
poses[cnt++] = config.frag_sni_pos;
}
if (config.frag_middle_sni) {
poses[cnt++] = mid_offset;
}
if (cnt > 1 && poses[0] > poses[1]) {
uint32_t tmp = poses[0];
poses[0] = poses[1];
poses[1] = tmp;
}
ret = send_tcp4_frags(payload, payload_len, poses, cnt, 0);
if (ret < 0) {
lgerror("tcp4 send frags", ret);
goto accept;
@@ -122,8 +137,26 @@ int process_tcp4_packet(const uint8_t *raw_payload, uint32_t raw_payload_len) {
mid_offset = ipd_offset + vrd.sni_len / 2;
mid_offset += 8 - mid_offset % 8;
uint32_t poses[] = { mid_offset };
ret = send_ip4_frags(payload, payload_len, poses, 1, 0);
uint32_t poses[2];
int cnt = 0;
if (config.frag_sni_pos && dlen > config.frag_sni_pos) {
poses[cnt] = config.frag_sni_pos + ((char *)data - (char *)tcph);
poses[cnt] += 8 - poses[cnt] % 8;
cnt++;
}
if (config.frag_middle_sni) {
poses[cnt++] = mid_offset;
}
if (cnt > 1 && poses[0] > poses[1]) {
uint32_t tmp = poses[0];
poses[0] = poses[1];
poses[1] = tmp;
}
ret = send_ip4_frags(payload, payload_len, poses, cnt, 0);
if (ret < 0) {
lgerror("ip4 send frags", ret);
goto accept;