mirror of
https://github.com/hufrea/byedpi.git
synced 2024-11-27 01:05:42 +03:00
792 lines
20 KiB
C
792 lines
20 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <limits.h>
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#include "params.h"
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#include "proxy.h"
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#include "packets.h"
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#include "error.h"
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#ifndef _WIN32
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <fcntl.h>
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#include <netinet/tcp.h>
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#include <sys/mman.h>
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#else
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#include <ws2tcpip.h>
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#include "win_service.h"
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#define close(fd) closesocket(fd)
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#endif
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#define VERSION "11"
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char oob_char[1] = "a";
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char ip_option[1] = "\0";
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struct packet fake_tls = {
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sizeof(tls_data), tls_data
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},
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fake_http = {
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sizeof(http_data), http_data
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},
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oob_data = {
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sizeof(oob_char), oob_char
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};
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struct params params = {
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.sfdelay = 3,
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.wait_send = 1,
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.cache_ttl = 100800,
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.ipv6 = 1,
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.resolve = 1,
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.udp = 1,
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.max_open = 512,
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.bfsize = 16384,
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.baddr = {
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.sin6_family = AF_INET6
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},
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.laddr = {
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.sin6_family = AF_INET
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},
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.debug = 0
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};
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const char help_text[] = {
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" -i, --ip, <ip> Listening IP, default 0.0.0.0\n"
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" -p, --port <num> Listening port, default 1080\n"
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" -c, --max-conn <count> Connection count limit, default 512\n"
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" -N, --no-domain Deny domain resolving\n"
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" -U, --no-udp Deny UDP association\n"
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" -I --conn-ip <ip> Connection binded IP, default ::\n"
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" -b, --buf-size <size> Buffer size, default 16384\n"
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" -x, --debug <level> Print logs, 0, 1 or 2\n"
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" -g, --def-ttl <num> TTL for all outgoing connections\n"
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// desync options
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#ifdef TCP_FASTOPEN_CONNECT
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" -F, --tfo Enable TCP Fast Open\n"
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#endif
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" -A, --auto[=t,r,c,s,a,n] Try desync params after this option\n"
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" Detect: torst,redirect,cl_err,sid_inv,alert,none\n"
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" -u, --cache-ttl <sec> Lifetime of cached desync params for IP\n"
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#ifdef TIMEOUT_SUPPORT
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" -T, --timeout <sec> Timeout waiting for response, after which trigger auto\n"
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#endif
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" -K, --proto[=t,h] Protocol whitelist: tls,http\n"
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" -H, --hosts <file|:str> Hosts whitelist\n"
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" -s, --split <n[+s]> Split packet at n\n"
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" +s - add SNI offset\n"
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" +h - add HTTP Host offset\n"
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" -d, --disorder <n[+s]> Split and send reverse order\n"
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" -o, --oob <n[+s]> Split and send as OOB data\n"
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#ifdef FAKE_SUPPORT
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" -f, --fake <n[+s]> Split and send fake packet\n"
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" -t, --ttl <num> TTL of fake packets, default 8\n"
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#ifdef __linux__
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" -k, --ip-opt[=f|:str] IP options of fake packets\n"
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" -S, --md5sig Add MD5 Signature option for fake packets\n"
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#endif
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" -l, --fake-data <f|:str> Set custom fake packet\n"
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" -n, --tls-sni <str> Change SNI in fake ClientHello\n"
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#endif
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" -e, --oob-data <f|:str> Set custom OOB data, filename or :string\n"
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" -M, --mod-http <h,d,r> Modify HTTP: hcsmix,dcsmix,rmspace\n"
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" -r, --tlsrec <n[+s]> Make TLS record at position\n"
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};
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const struct option options[] = {
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{"no-domain", 0, 0, 'N'},
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{"no-ipv6", 0, 0, 'X'},
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{"no-udp", 0, 0, 'U'},
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{"help", 0, 0, 'h'},
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{"version", 0, 0, 'v'},
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{"ip", 1, 0, 'i'},
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{"port", 1, 0, 'p'},
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{"conn-ip", 1, 0, 'I'},
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{"buf-size", 1, 0, 'b'},
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{"max-conn", 1, 0, 'c'},
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{"debug", 1, 0, 'x'},
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#ifdef TCP_FASTOPEN_CONNECT
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{"tfo ", 0, 0, 'F'},
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#endif
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{"auto", 2, 0, 'A'},
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{"cache-ttl", 1, 0, 'u'},
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#ifdef TIMEOUT_SUPPORT
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{"timeout", 1, 0, 'T'},
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#endif
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{"proto", 2, 0, 'K'},
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{"hosts", 1, 0, 'H'},
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{"split", 1, 0, 's'},
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{"disorder", 1, 0, 'd'},
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{"oob", 1, 0, 'o'},
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#ifdef FAKE_SUPPORT
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{"fake", 1, 0, 'f'},
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{"ttl", 1, 0, 't'},
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#ifdef __linux__
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{"ip-opt", 2, 0, 'k'},
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{"md5sig", 0, 0, 'S'},
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#endif
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{"fake-data", 1, 0, 'l'},
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{"tls-sni", 1, 0, 'n'},
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#endif
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{"oob-data", 1, 0, 'e'},
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{"mod-http", 1, 0, 'M'},
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{"tlsrec", 1, 0, 'r'},
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{"def-ttl", 1, 0, 'g'},
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{"delay", 1, 0, 'w'}, //
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{"not-wait-send", 0, 0, 'W'}, //
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#ifdef __linux__
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{"protect-path", 1, 0, 'P'}, //
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#endif
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{0}
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};
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char *parse_cform(const char *str, ssize_t *size)
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{
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ssize_t len = strlen(str);
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char *d = malloc(len);
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if (!d) {
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return 0;
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}
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static char esca[] = {
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'r','\r','n','\n','t','\t','\\','\\',
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'f','\f','b','\b','v','\v','a','\a', 0
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};
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ssize_t i = 0, p = 0;
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for (; p < len; ++p && ++i) {
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if (str[p] != '\\') {
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d[i] = str[p];
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continue;
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}
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p++;
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char *e = esca;
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for (; *e; e += 2) {
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if (*e == str[p]) {
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d[i] = *(e + 1);
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break;
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}
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}
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if (*e) {
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continue;
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}
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int n = 0;
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if (sscanf(&str[p], "x%2hhx%n", &d[i], &n) == 1
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|| sscanf(&str[p], "%3hho%n", &d[i], &n) == 1) {
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p += (n - 1);
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continue;
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}
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i--; p--;
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}
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*size = i;
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char *m = realloc(d, i);
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return m ? m : d;
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}
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char *ftob(const char *str, ssize_t *sl)
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{
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if (*str == ':') {
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return parse_cform(str + 1, sl);
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}
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char *buffer = 0;
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long size;
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FILE *file = fopen(str, "rb");
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if (!file) {
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return 0;
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}
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do {
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if (fseek(file, 0, SEEK_END)) {
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break;
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}
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size = ftell(file);
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if (size <= 0) {
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break;
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}
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if (fseek(file, 0, SEEK_SET)) {
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break;
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}
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if (!(buffer = malloc(size))) {
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break;
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}
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if (fread(buffer, 1, size, file) != size) {
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free(buffer);
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buffer = 0;
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}
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} while (0);
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if (buffer) {
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*sl = size;
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}
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fclose(file);
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return buffer;
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}
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struct mphdr *parse_hosts(char *buffer, size_t size)
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{
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struct mphdr *hdr = mem_pool(1);
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if (!hdr) {
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return 0;
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}
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char *end = buffer + size;
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char *e = buffer, *s = buffer;
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for (; e <= end; e++) {
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if (*e != ' ' && *e != '\n' && *e != '\r' && e != end) {
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continue;
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}
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if (s == e) {
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s++;
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continue;
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}
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if (mem_add(hdr, s, e - s) == 0) {
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free(hdr);
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return 0;
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}
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s = e + 1;
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}
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return hdr;
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}
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int get_addr(const char *str, struct sockaddr_ina *addr)
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{
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struct addrinfo hints = {0}, *res = 0;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_family = AF_UNSPEC;
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hints.ai_flags = AI_NUMERICHOST;
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if (getaddrinfo(str, 0, &hints, &res) || !res) {
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return -1;
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}
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if (res->ai_addr->sa_family == AF_INET6)
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addr->in6.sin6_addr = (
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(struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
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else
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addr->in.sin_addr = (
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(struct sockaddr_in *)res->ai_addr)->sin_addr;
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freeaddrinfo(res);
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return 0;
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}
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int get_default_ttl()
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{
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int orig_ttl = -1, fd;
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socklen_t tsize = sizeof(orig_ttl);
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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uniperror("socket");
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return -1;
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}
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if (getsockopt(fd, IPPROTO_IP, IP_TTL,
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(char *)&orig_ttl, &tsize) < 0) {
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uniperror("getsockopt IP_TTL");
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}
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close(fd);
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return orig_ttl;
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}
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int parse_offset(struct part *part, const char *str)
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{
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char *end = 0;
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long val = strtol(str, &end, 0);
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if (*end == '+') switch (*(end + 1)) {
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case 's':
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part->flag = OFFSET_SNI;
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break;
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case 'h':
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part->flag = OFFSET_HOST;
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break;
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default:
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return -1;
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}
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else if (*end) {
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return -1;
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}
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part->pos = val;
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return 0;
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}
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void *add(void **root, int *n, size_t ss)
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{
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char *p = realloc(*root, ss * (*n + 1));
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if (!p) {
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uniperror("realloc");
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return 0;
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}
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*root = p;
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p = (p + ((*n) * ss));
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memset(p, 0, ss);
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*n = *n + 1;
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return p;
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}
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void clear_params(void)
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{
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#ifdef _WIN32
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WSACleanup();
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#endif
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if (params.mempool) {
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mem_destroy(params.mempool);
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params.mempool = 0;
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}
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if (params.dp) {
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for (int i = 0; i < params.dp_count; i++) {
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struct desync_params s = params.dp[i];
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if (s.ip_options != ip_option) {
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free(s.ip_options);
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s.ip_options = ip_option;
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}
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if (s.parts != 0) {
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free(s.parts);
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s.parts = 0;
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}
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if (s.tlsrec != 0) {
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free(s.tlsrec);
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s.tlsrec = 0;
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}
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if (s.fake_data.data != 0) {
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free(s.fake_data.data);
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s.fake_data.data = 0;
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}
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if (s.file_ptr != 0) {
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free(s.file_ptr);
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s.file_ptr = 0;
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}
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}
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free(params.dp);
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params.dp = 0;
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}
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if (oob_data.data != oob_char) {
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free(oob_data.data);
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oob_data.data = oob_char;
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}
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}
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int main(int argc, char **argv)
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{
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#ifdef _WIN32
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WSADATA wsa;
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if (WSAStartup(MAKEWORD(2, 2), &wsa)) {
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uniperror("WSAStartup");
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return -1;
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}
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if (register_winsvc(argc, argv)) {
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return 0;
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}
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#endif
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int optc = sizeof(options)/sizeof(*options);
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for (int i = 0, e = optc; i < e; i++)
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optc += options[i].has_arg;
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char opt[optc + 1];
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opt[optc] = 0;
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for (int i = 0, o = 0; o < optc; i++, o++) {
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opt[o] = options[i].val;
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for (int c = options[i].has_arg; c; c--) {
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o++;
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opt[o] = ':';
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}
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}
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params.laddr.sin6_port = htons(1080);
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int rez;
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int invalid = 0;
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long val = 0;
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char *end = 0;
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struct desync_params *dp = add((void *)¶ms.dp,
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¶ms.dp_count, sizeof(struct desync_params));
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if (!dp) {
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clear_params();
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return -1;
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}
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while (!invalid && (rez = getopt_long_only(
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argc, argv, opt, options, 0)) != -1) {
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switch (rez) {
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case 'N':
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params.resolve = 0;
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break;
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case 'X':
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params.ipv6 = 0;
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break;
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case 'U':
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params.udp = 0;
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break;
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case 'h':
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printf(help_text);
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clear_params();
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return 0;
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case 'v':
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printf("%s\n", VERSION);
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clear_params();
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return 0;
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case 'i':
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if (get_addr(optarg,
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(struct sockaddr_ina *)¶ms.laddr) < 0)
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invalid = 1;
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break;
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case 'p':
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val = strtol(optarg, &end, 0);
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if (val <= 0 || val > 0xffff || *end)
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invalid = 1;
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else
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params.laddr.sin6_port = htons(val);
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break;
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case 'I':
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if (get_addr(optarg,
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(struct sockaddr_ina *)¶ms.baddr) < 0)
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invalid = 1;
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break;
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case 'b':
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val = strtol(optarg, &end, 0);
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if (val <= 0 || val > INT_MAX/4 || *end)
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invalid = 1;
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else
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params.bfsize = val;
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break;
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case 'c':
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val = strtol(optarg, &end, 0);
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if (val <= 0 || val >= (0xffff/2) || *end)
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invalid = 1;
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else
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params.max_open = val;
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break;
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case 'x': //
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params.debug = strtol(optarg, 0, 0);
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if (params.debug < 0)
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invalid = 1;
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break;
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// desync options
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case 'F':
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params.tfo = 1;
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break;
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case 'A':
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dp = add((void *)¶ms.dp, ¶ms.dp_count,
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sizeof(struct desync_params));
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if (!dp) {
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clear_params();
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return -1;
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}
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if (!optarg) {
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dp->detect |= DETECT_TORST;
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break;
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}
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end = optarg;
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while (end && !invalid) {
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switch (*end) {
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case 't':
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dp->detect |= DETECT_TORST;
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break;
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case 'r':
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dp->detect |= DETECT_HTTP_LOCAT;
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break;
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case 'c':
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dp->detect |= DETECT_HTTP_CLERR;
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break;
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case 's':
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dp->detect |= DETECT_TLS_INVSID;
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break;
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case 'a':
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dp->detect |= DETECT_TLS_ALERT;
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break;
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case 'n':
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break;
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default:
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invalid = 1;
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continue;
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}
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end = strchr(end, ',');
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if (end) end++;
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}
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break;
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case 'u':
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val = strtol(optarg, &end, 0);
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if (val <= 0 || *end)
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invalid = 1;
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else
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params.cache_ttl = val;
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break;
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case 'T':;
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#ifdef __linux__
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float f = strtof(optarg, &end);
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val = (long)(f * 1000);
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#else
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val = strtol(optarg, &end, 0);
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#endif
|
|
if (val <= 0 || val > UINT_MAX || *end)
|
|
invalid = 1;
|
|
else
|
|
params.timeout = val;
|
|
break;
|
|
|
|
case 'K':
|
|
if (!optarg) {
|
|
dp->proto |= 0xffffffff;
|
|
break;
|
|
}
|
|
end = optarg;
|
|
while (end && !invalid) {
|
|
switch (*end) {
|
|
case 't':
|
|
dp->proto |= IS_HTTPS;
|
|
break;
|
|
case 'h':
|
|
dp->proto |= IS_HTTP;
|
|
break;
|
|
default:
|
|
invalid = 1;
|
|
continue;
|
|
}
|
|
end = strchr(end, ',');
|
|
if (end) end++;
|
|
}
|
|
break;
|
|
|
|
case 'H':;
|
|
if (dp->file_ptr) {
|
|
continue;
|
|
}
|
|
dp->file_ptr = ftob(optarg, &dp->file_size);
|
|
if (!dp->file_ptr) {
|
|
uniperror("read/parse");
|
|
invalid = 1;
|
|
continue;
|
|
}
|
|
dp->hosts = parse_hosts(dp->file_ptr, dp->file_size);
|
|
if (!dp->hosts) {
|
|
perror("parse_hosts");
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 's':
|
|
case 'd':
|
|
case 'o':
|
|
case 'f':
|
|
;
|
|
struct part *part = add((void *)&dp->parts,
|
|
&dp->parts_n, sizeof(struct part));
|
|
if (!part) {
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
if (parse_offset(part, optarg)) {
|
|
invalid = 1;
|
|
break;
|
|
}
|
|
switch (rez) {
|
|
case 's': part->m = DESYNC_SPLIT;
|
|
break;
|
|
case 'd': part->m = DESYNC_DISORDER;
|
|
break;
|
|
case 'o': part->m = DESYNC_OOB;
|
|
break;
|
|
case 'f': part->m = DESYNC_FAKE;
|
|
}
|
|
break;
|
|
|
|
case 't':
|
|
val = strtol(optarg, &end, 0);
|
|
if (val <= 0 || val > 255 || *end)
|
|
invalid = 1;
|
|
else
|
|
dp->ttl = val;
|
|
break;
|
|
|
|
case 'k':
|
|
if (dp->ip_options != ip_option) {
|
|
continue;
|
|
}
|
|
if (optarg)
|
|
dp->ip_options = ftob(optarg, &dp->ip_options_len);
|
|
else {
|
|
dp->ip_options = ip_option;
|
|
dp->ip_options_len = sizeof(ip_option);
|
|
}
|
|
if (!dp->ip_options) {
|
|
uniperror("read/parse");
|
|
invalid = 1;
|
|
}
|
|
break;
|
|
|
|
case 'S':
|
|
dp->md5sig = 1;
|
|
break;
|
|
|
|
case 'n':
|
|
if (change_tls_sni(optarg, fake_tls.data, fake_tls.size)) {
|
|
fprintf(stderr, "error chsni\n");
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
printf("sni: %s\n", optarg);
|
|
break;
|
|
|
|
case 'l':
|
|
if (dp->fake_data.data) {
|
|
continue;
|
|
}
|
|
dp->fake_data.data = ftob(optarg, &dp->fake_data.size);
|
|
if (!dp->fake_data.data) {
|
|
uniperror("read/parse");
|
|
invalid = 1;
|
|
}
|
|
break;
|
|
|
|
case 'e':
|
|
if (oob_data.data != oob_char) {
|
|
continue;
|
|
}
|
|
oob_data.data = ftob(optarg, &oob_data.size);
|
|
if (!oob_data.data) {
|
|
uniperror("read/parse");
|
|
invalid = 1;
|
|
}
|
|
break;
|
|
|
|
case 'M':
|
|
end = optarg;
|
|
while (end && !invalid) {
|
|
switch (*end) {
|
|
case 'r':
|
|
dp->mod_http |= MH_SPACE;
|
|
break;
|
|
case 'h':
|
|
dp->mod_http |= MH_HMIX;
|
|
break;
|
|
case 'd':
|
|
dp->mod_http |= MH_DMIX;
|
|
break;
|
|
default:
|
|
invalid = 1;
|
|
continue;
|
|
}
|
|
end = strchr(end, ',');
|
|
if (end) end++;
|
|
}
|
|
break;
|
|
|
|
case 'r':
|
|
part = add((void *)&dp->tlsrec,
|
|
&dp->tlsrec_n, sizeof(struct part));
|
|
if (!part) {
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
if (parse_offset(part, optarg)
|
|
|| part->pos > 0xffff) {
|
|
invalid = 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 'g':
|
|
val = strtol(optarg, &end, 0);
|
|
if (val <= 0 || val > 255 || *end)
|
|
invalid = 1;
|
|
else {
|
|
params.def_ttl = val;
|
|
params.custom_ttl = 1;
|
|
}
|
|
break;
|
|
|
|
case 'w': //
|
|
params.sfdelay = strtol(optarg, &end, 0);
|
|
if (params.sfdelay < 0 || optarg == end
|
|
|| params.sfdelay >= 1000 || *end)
|
|
invalid = 1;
|
|
break;
|
|
|
|
case 'W':
|
|
params.wait_send = 0;
|
|
break;
|
|
#ifdef __linux__
|
|
case 'P':
|
|
params.protect_path = optarg;
|
|
break;
|
|
#endif
|
|
case 0:
|
|
break;
|
|
|
|
case '?':
|
|
clear_params();
|
|
return -1;
|
|
|
|
default:
|
|
printf("?: %c\n", rez);
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
}
|
|
if (invalid) {
|
|
fprintf(stderr, "invalid value: -%c %s\n", rez, optarg);
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
if (dp->hosts || dp->proto) {
|
|
dp = add((void *)¶ms.dp,
|
|
¶ms.dp_count, sizeof(struct desync_params));
|
|
if (!dp) {
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (params.baddr.sin6_family != AF_INET6) {
|
|
params.ipv6 = 0;
|
|
}
|
|
if (!params.def_ttl) {
|
|
if ((params.def_ttl = get_default_ttl()) < 1) {
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
}
|
|
params.mempool = mem_pool(0);
|
|
if (!params.mempool) {
|
|
uniperror("mem_pool");
|
|
clear_params();
|
|
return -1;
|
|
}
|
|
int status = run((struct sockaddr_ina *)¶ms.laddr);
|
|
clear_params();
|
|
return status;
|
|
}
|