mirror of
https://github.com/bol-van/zapret.git
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152 lines
4.6 KiB
C
152 lines
4.6 KiB
C
#pragma once
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#include "pools.h"
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#include "conntrack.h"
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#include "desync.h"
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#include "protocol.h"
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#include "helpers.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <net/if.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <time.h>
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#include <sys/queue.h>
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#ifndef __OpenBSD__
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#include <wordexp.h>
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#endif
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#define TLS_PARTIALS_ENABLE true
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#define Q_RCVBUF (128*1024) // in bytes
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#define Q_SNDBUF (64*1024) // in bytes
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#define RAW_SNDBUF (64*1024) // in bytes
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#define Q_MAXLEN 1024 // in packets
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#define BADSEQ_INCREMENT_DEFAULT -10000
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#define BADSEQ_ACK_INCREMENT_DEFAULT -66000
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#define IPFRAG_UDP_DEFAULT 8
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#define IPFRAG_TCP_DEFAULT 32
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#define UDPLEN_INCREMENT_DEFAULT 2
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#define HOSTLIST_AUTO_FAIL_THRESHOLD_DEFAULT 3
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#define HOSTLIST_AUTO_FAIL_TIME_DEFAULT 60
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#define HOSTLIST_AUTO_RETRANS_THRESHOLD_DEFAULT 3
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#define MAX_SPLITS 64
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enum log_target { LOG_TARGET_CONSOLE=0, LOG_TARGET_FILE, LOG_TARGET_SYSLOG };
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struct desync_profile
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{
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int n; // number of the profile
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uint16_t wsize,wssize;
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uint8_t wscale,wsscale;
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char wssize_cutoff_mode; // n - packets, d - data packets, s - relative sequence
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unsigned int wssize_cutoff;
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bool hostcase, hostnospace, domcase;
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char hostspell[4];
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enum dpi_desync_mode desync_mode0,desync_mode,desync_mode2;
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bool desync_retrans,desync_skip_nosni,desync_any_proto;
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unsigned int desync_repeats,desync_seqovl,desync_ipfrag_pos_tcp,desync_ipfrag_pos_udp;
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// multisplit
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struct proto_pos splits[MAX_SPLITS];
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int split_count;
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char desync_start_mode, desync_cutoff_mode; // n - packets, d - data packets, s - relative sequence
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unsigned int desync_start, desync_cutoff;
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uint8_t desync_ttl, desync_ttl6;
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autottl desync_autottl, desync_autottl6;
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uint32_t desync_fooling_mode;
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uint32_t desync_badseq_increment, desync_badseq_ack_increment;
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uint8_t fake_http[1460],fake_tls[1460],fake_unknown[1460],fake_syndata[1460],seqovl_pattern[1460];
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uint8_t fake_unknown_udp[1472],udplen_pattern[1472],fake_quic[1472],fake_wg[1472],fake_dht[1472];
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size_t fake_http_size,fake_tls_size,fake_quic_size,fake_wg_size,fake_dht_size,fake_unknown_size,fake_syndata_size,fake_unknown_udp_size;
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int udplen_increment;
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bool filter_ipv4,filter_ipv6;
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struct port_filters_head pf_tcp,pf_udp;
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uint32_t filter_l7; // L7_PROTO_* bits
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// list of pointers to ipsets
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struct ipset_collection_head ips_collection, ips_collection_exclude;
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// list of pointers to hostlist files
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struct hostlist_collection_head hl_collection, hl_collection_exclude;
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// pointer to autohostlist. NULL if no autohostlist for the profile.
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struct hostlist_file *hostlist_auto;
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int hostlist_auto_fail_threshold, hostlist_auto_fail_time, hostlist_auto_retrans_threshold;
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hostfail_pool *hostlist_auto_fail_counters;
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};
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#define PROFILE_IPSETS_ABSENT(dp) (!LIST_FIRST(&dp->ips_collection) && !LIST_FIRST(&dp->ips_collection_exclude))
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#define PROFILE_IPSETS_EMPTY(dp) (ipset_collection_is_empty(&dp->ips_collection) && ipset_collection_is_empty(&dp->ips_collection_exclude))
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#define PROFILE_HOSTLISTS_EMPTY(dp) (hostlist_collection_is_empty(&dp->hl_collection) && hostlist_collection_is_empty(&dp->hl_collection_exclude))
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struct desync_profile_list {
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struct desync_profile dp;
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LIST_ENTRY(desync_profile_list) next;
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};
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LIST_HEAD(desync_profile_list_head, desync_profile_list);
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struct desync_profile_list *dp_list_add(struct desync_profile_list_head *head);
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void dp_list_destroy(struct desync_profile_list_head *head);
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bool dp_list_have_autohostlist(struct desync_profile_list_head *head);
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struct params_s
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{
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#ifndef __OpenBSD__
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wordexp_t wexp; // for file based config
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#endif
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enum log_target debug_target;
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char debug_logfile[PATH_MAX];
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bool debug;
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#ifdef __linux__
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int qnum;
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#elif defined(BSD)
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uint16_t port; // divert port
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#endif
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char bind_fix4,bind_fix6;
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uint32_t desync_fwmark; // unused in BSD
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struct desync_profile_list_head desync_profiles;
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#ifdef __CYGWIN__
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struct str_list_head ssid_filter,nlm_filter;
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#else
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bool droproot;
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uid_t uid;
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gid_t gid;
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#endif
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char hostlist_auto_debuglog[PATH_MAX];
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// hostlist files with data for all profiles
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struct hostlist_files_head hostlists;
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// ipset files with data for all profiles
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struct ipset_files_head ipsets;
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unsigned int ctrack_t_syn, ctrack_t_est, ctrack_t_fin, ctrack_t_udp;
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t_conntrack conntrack;
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};
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extern struct params_s params;
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extern const char *progname;
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int DLOG(const char *format, ...);
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int DLOG_ERR(const char *format, ...);
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int DLOG_PERROR(const char *s);
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int DLOG_CONDUP(const char *format, ...);
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int HOSTLIST_DEBUGLOG_APPEND(const char *format, ...);
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void hexdump_limited_dlog(const uint8_t *data, size_t size, size_t limit);
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