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Add support for bruteforce mode of parsing SNI from Client Hello.

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This commit is contained in:
Vadim Vetrov
2024-08-15 02:31:48 +03:00
parent 7f340fb033
commit 044801efb9
5 changed files with 109 additions and 3 deletions
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19
args.c
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@@ -19,6 +19,8 @@ struct config_t config = {
.fake_sni = 1,
.fake_sni_seq_len = 1,
.sni_detection = SNI_DETECTION_PARSE,
#ifdef SEG2_DELAY
.seg2_delay = SEG2_DELAY,
#else
@@ -56,6 +58,7 @@ struct config_t config = {
#define OPT_FK_WINSIZE 14
#define OPT_TRACE 15
#define OPT_QUIC_DROP 16
#define OPT_SNI_DETECTION 17
#define OPT_SEG2DELAY 5
#define OPT_THREADS 6
#define OPT_SILENT 7
@@ -77,6 +80,7 @@ static struct option long_opt[] = {
{"frag-sni-faked", 1, 0, OPT_FRAG_SNI_FAKED},
{"fk-winsize", 1, 0, OPT_FK_WINSIZE},
{"quic-drop", 0, 0, OPT_QUIC_DROP},
{"sni-detection", 1, 0, OPT_SNI_DETECTION},
{"seg2delay", 1, 0, OPT_SEG2DELAY},
{"threads", 1, 0, OPT_THREADS},
{"silent", 0, 0, OPT_SILENT},
@@ -126,6 +130,7 @@ void print_usage(const char *argv0) {
printf("\t--frag-sni-faked={0|1}\n");
printf("\t--fk-winsize=<winsize>\n");
printf("\t--quic-drop\n");
printf("\t--sni-detection={parse|brute}\n");
printf("\t--seg2delay=<delay>\n");
printf("\t--threads=<threads number>\n");
printf("\t--silent\n");
@@ -166,6 +171,16 @@ int parse_args(int argc, char *argv[]) {
config.domains_str = optarg;
config.domains_strlen = strlen(config.domains_str);
break;
case OPT_SNI_DETECTION:
if (strcmp(optarg, "parse") == 0) {
config.sni_detection = SNI_DETECTION_PARSE;
} else if (strcmp(optarg, "brute") == 0) {
config.sni_detection = SNI_DETECTION_BRUTE;
} else {
goto invalid_opt;
}
break;
case OPT_FRAG:
if (strcmp(optarg, "tcp") == 0) {
@@ -346,6 +361,10 @@ void print_welcome() {
printf("All QUIC packets will be dropped\n");
}
if (config.sni_detection == SNI_DETECTION_BRUTE) {
printf("Server Name Extension will be parsed in the bruteforce mode\n");
}
if (config.all_domains) {
printf("All Client Hello will be targetted by youtubeUnblock!\n");
}