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GoodbyeDPI
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Handle Host header after User-Agent header in the HTTP packet. Fixes #29. 

Most browsers would put Host header as early as they could, but not Microsoft Edge.
windivert-test
ValdikSS 8 years ago
parent
ee665ee3bd
commit
4c13435ee3
1 changed files with 26 additions and 13 deletions
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  1. 39
      goodbyedpi.c

39
goodbyedpi.c
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@ -352,27 +352,40 @@ int main(int argc, char *argv[]) {
*/
host_len = data_addr_rn - host_addr;
useragent_addr = find_useragent_header(packet_data, packet_dataLen);
if (host_len <= 253 && useragent_addr && useragent_addr > host_addr) {
/* Performing action only if User-Agent header goes after Host */
if (host_len <= 253 && useragent_addr) {
useragent_addr += strlen(http_useragent_find);
/* useragent_addr is in the beginning of User-Agent value */
data_len = packet_dataLen - ((PVOID)useragent_addr - packet_data);
data_addr_rn = dumb_memmem(useragent_addr,
data_len, "\r\n", 2);
data_len, "\r\n", 2);
/* data_addr_rn is in the end of User-Agent value */
if (data_addr_rn) {
data_len = (PVOID)data_addr_rn - (PVOID)host_addr;
/* Move one byte to the left from "Host:"
* to the end of User-Agen
*/
memmove(host_addr - 1, host_addr, data_len);
/* Put space in the end of User-Agent header */
*(char*)(data_addr_rn - 1) = ' ';
//printf("Replaced Host header!\n");
if (useragent_addr > host_addr) {
/* User-Agent goes AFTER Host header */
data_len = (PVOID)data_addr_rn - (PVOID)host_addr;
/* Move one byte to the LEFT from "Host:"
* to the end of User-Agent
*/
memmove(host_addr - 1, host_addr, data_len);
/* Put space in the end of User-Agent header */
*(char*)(data_addr_rn - 1) = ' ';
//printf("Replaced Host header!\n");
}
else {
/* User-Agent goes BEFORE Host header */
data_len = (PVOID)host_addr - (PVOID)data_addr_rn - 1;
/* Move one byte to the RIGHT from the end of User-Agent
* to the "Host:"
*/
memmove(data_addr_rn + 1, data_addr_rn, data_len);
/* Put space in the end of User-Agent header */
*(char*)(data_addr_rn) = ' ';
//printf("Replaced Host header!\n");
}
}
}
}

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