X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fxonotic-data.pk3dir.git;a=blobdiff_plain;f=qcsrc%2Fserver%2Fanticheat.qc;h=1e6759684a593df5fea8690173ee76946d2b4fbe;hp=d00c60b09d8b47134f9f0a18c94ac7d007bfa08d;hb=2f239100c8b77275d69972f91ac4e7ff913f3d7c;hpb=1eadc66440474af5c3d2b2f7e5a24935da3ffbdf diff --git a/qcsrc/server/anticheat.qc b/qcsrc/server/anticheat.qc index d00c60b09..1e6759684 100644 --- a/qcsrc/server/anticheat.qc +++ b/qcsrc/server/anticheat.qc @@ -1,30 +1,46 @@ +#include "anticheat.qh" + +#include "antilag.qh" +#include "autocvars.qh" +#include "defs.qh" +#include "miscfunctions.qh" + +#include "../dpdefs/progsdefs.qh" +#include "../dpdefs/dpextensions.qh" + +#include "../warpzonelib/mathlib.qh" + +#include "command/common.qh" + .float anticheat_jointime; void mean_accumulate(entity e, .float a, .float c, float mean, float value, float weight) { - if(weight == 0) + if (weight == 0) return; - if(mean == 0) - e.a *= pow(value, weight); + if (mean == 0) + e.(a) *= pow(value, weight); else - e.a += pow(value, mean) * weight; - e.c += weight; + e.(a) += pow(value, mean) * weight; + e.(c) += weight; } float mean_evaluate(entity e, .float a, .float c, float mean) { - if(e.c == 0) + if (e.(c) == 0) return 0; - if(mean == 0) - return pow(e.a, 1.0 / e.c); + if (mean == 0) + return pow(e.(a), 1.0 / e.(c)); else - return pow(e.a / e.c, 1.0 / mean); + return pow(e.(a) / e.(c), 1.0 / mean); } #define MEAN_ACCUMULATE(prefix,v,w) mean_accumulate(self,prefix##_accumulator,prefix##_count,prefix##_mean,v,w) #define MEAN_EVALUATE(prefix) mean_evaluate(self,prefix##_accumulator,prefix##_count,prefix##_mean) #define MEAN_DECLARE(prefix,m) float prefix##_mean = m; .float prefix##_count, prefix##_accumulator +.float anticheat_fixangle_endtime; + float anticheat_div0_evade_evasion_delta; .float anticheat_div0_evade_offset; .vector anticheat_div0_evade_v_angle; @@ -37,10 +53,32 @@ MEAN_DECLARE(anticheat_div0_strafebot_old, 5); .vector anticheat_div0_strafebot_forward_prev; MEAN_DECLARE(anticheat_div0_strafebot_new, 5); +// Snap-aim detection: we track the average angular speed of aiming over time, in "radians per second". +// Signal: a high-power mean. Cheaters will have high "signal" here. +// Noise: a low-power mean. Active/shivery players will have high "noise" here. +// Note one can always artificially add noise - so very high values of both signal and noise need to be checked too. +MEAN_DECLARE(anticheat_idle_snapaim_signal, 5); +MEAN_DECLARE(anticheat_idle_snapaim_noise, 1); + +// TEMP DEBUG STUFF. +MEAN_DECLARE(anticheat_idle_snapaim_m2, 2); +MEAN_DECLARE(anticheat_idle_snapaim_m3, 3); +MEAN_DECLARE(anticheat_idle_snapaim_m4, 4); +MEAN_DECLARE(anticheat_idle_snapaim_m7, 7); +MEAN_DECLARE(anticheat_idle_snapaim_m10, 10); + .float anticheat_speedhack_offset; .float anticheat_speedhack_movetime, anticheat_speedhack_movetime_count, anticheat_speedhack_movetime_frac; MEAN_DECLARE(anticheat_speedhack, 5); +.float anticheat_speedhack_accu; +.float anticheat_speedhack_lasttime; +MEAN_DECLARE(anticheat_speedhack_m1, 1); +MEAN_DECLARE(anticheat_speedhack_m2, 2); +MEAN_DECLARE(anticheat_speedhack_m3, 3); +MEAN_DECLARE(anticheat_speedhack_m4, 4); +MEAN_DECLARE(anticheat_speedhack_m5, 5); + float movement_oddity(vector m0, vector m1) { float cosangle = normalize(m0) * normalize(m1); @@ -52,15 +90,14 @@ float movement_oddity(vector m0, vector m1) void anticheat_physics() { - float f, wishspeed; - vector wishvel; + float f; // div0_evade -> SPECTATORS makevectors(self.v_angle); if(self.anticheat_div0_evade_offset == 0) { f = fabs(anticheat_div0_evade_evasion_delta - floor(anticheat_div0_evade_evasion_delta) - 0.5) * 2; // triangle function - self.anticheat_div0_evade_offset = time + sys_frametime * (3 * f - 1); + self.anticheat_div0_evade_offset = servertime + sys_frametime * (3 * f - 1); self.anticheat_div0_evade_v_angle = self.v_angle; self.anticheat_div0_evade_forward_initial = v_forward; MEAN_ACCUMULATE(anticheat_div0_evade, 0, 1); @@ -75,8 +112,32 @@ void anticheat_physics() MEAN_ACCUMULATE(anticheat_div0_strafebot_old, movement_oddity(self.movement, self.anticheat_div0_strafebot_movement_prev), 1); self.anticheat_div0_strafebot_movement_prev = self.movement; - if(vlen(self.anticheat_div0_strafebot_forward_prev)) - MEAN_ACCUMULATE(anticheat_div0_strafebot_new, 0.5 - 0.5 * (self.anticheat_div0_strafebot_forward_prev * v_forward), 1); + // Note: this actually tries to detect snap-aim. + if(vlen(self.anticheat_div0_strafebot_forward_prev) && time > self.anticheat_fixangle_endtime) { + float cosangle = self.anticheat_div0_strafebot_forward_prev * v_forward; + float angle = cosangle < -1 ? M_PI : cosangle > 1 ? 0 : acos(cosangle); + /* + if (angle >= 10 * M_PI / 180) + printf("SNAP %s: %f for %f, %f since fixangle\n", self.netname, angle * 180 / M_PI, cosangle, time - self.anticheat_fixangle_endtime); + */ + MEAN_ACCUMULATE(anticheat_div0_strafebot_new, angle / M_PI, 1); + + if (autocvar_slowmo > 0) { + // Technically this is a NOP, as the engine should be ensuring + // this in the first place. Let's guard against dividing by + // zero anyway. + float dt = max(0.001, frametime) / autocvar_slowmo; + + float anglespeed = angle / dt; + MEAN_ACCUMULATE(anticheat_idle_snapaim_signal, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_noise, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_m2, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_m3, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_m4, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_m7, anglespeed, dt); + MEAN_ACCUMULATE(anticheat_idle_snapaim_m10, anglespeed, dt); + } + } self.anticheat_div0_strafebot_forward_prev = v_forward; // generic speedhack detection: correlate anticheat_speedhack_movetime (UPDATED BEFORE THIS) and server time @@ -94,50 +155,23 @@ void anticheat_physics() self.anticheat_speedhack_offset += (f - self.anticheat_speedhack_offset) * frametime * 0.1; } - // race/CTS: force kbd movement for fairness - if(g_race || g_cts) - { - // if record times matter - // ensure nothing EVIL is being done (i.e. div0_evade) - // this hinders joystick users though - // but it still gives SOME analog control - wishvel_x = fabs(self.movement_x); - wishvel_y = fabs(self.movement_y); - if(wishvel_x != 0 && wishvel_y != 0 && wishvel_x != wishvel_y) - { - wishvel_z = 0; - wishspeed = vlen(wishvel); - if(wishvel_x >= 2 * wishvel_y) - { - // pure X motion - if(self.movement_x > 0) - self.movement_x = wishspeed; - else - self.movement_x = -wishspeed; - self.movement_y = 0; - } - else if(wishvel_y >= 2 * wishvel_x) - { - // pure Y motion - self.movement_x = 0; - if(self.movement_y > 0) - self.movement_y = wishspeed; - else - self.movement_y = -wishspeed; - } - else - { - // diagonal - if(self.movement_x > 0) - self.movement_x = M_SQRT1_2 * wishspeed; - else - self.movement_x = -M_SQRT1_2 * wishspeed; - if(self.movement_y > 0) - self.movement_y = M_SQRT1_2 * wishspeed; - else - self.movement_y = -M_SQRT1_2 * wishspeed; - } - } + // new generic speedhack detection + if (self.anticheat_speedhack_lasttime > 0) { + float dt = servertime - self.anticheat_speedhack_lasttime; + const float falloff = 0.2; + self.anticheat_speedhack_accu *= exp(-dt * falloff); + self.anticheat_speedhack_accu += frametime * falloff; + // NOTE: at cl_netfps x, this actually averages not to 1, but to 1/x * falloff / (1 - exp(-1/x * falloff)) + // For 15 netfps (absolute minimum bearable), and 0.2 falloff, this is: 1.0067 + self.anticheat_speedhack_lasttime = servertime; + MEAN_ACCUMULATE(anticheat_speedhack_m1, self.anticheat_speedhack_accu, frametime); + MEAN_ACCUMULATE(anticheat_speedhack_m2, self.anticheat_speedhack_accu, frametime); + MEAN_ACCUMULATE(anticheat_speedhack_m3, self.anticheat_speedhack_accu, frametime); + MEAN_ACCUMULATE(anticheat_speedhack_m4, self.anticheat_speedhack_accu, frametime); + MEAN_ACCUMULATE(anticheat_speedhack_m5, self.anticheat_speedhack_accu, frametime); + } else { + self.anticheat_speedhack_accu = 1; + self.anticheat_speedhack_lasttime = servertime; } } @@ -168,15 +202,69 @@ void anticheat_report() { if(!autocvar_sv_eventlog) return; + // TODO(divVerent): Use xonstat to acquire good thresholds. GameLogEcho(strcat(":anticheat:_time:", ftos(self.playerid), ":", ftos(servertime - self.anticheat_jointime))); - GameLogEcho(strcat(":anticheat:speedhack:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack), 240, 0.1, 0.15))); - GameLogEcho(strcat(":anticheat:div0_strafebot_old:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_old), 120, 0.3, 0.4))); - GameLogEcho(strcat(":anticheat:div0_strafebot_new:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_new), 120, 0.3, 0.4))); - GameLogEcho(strcat(":anticheat:div0_evade:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_evade), 120, 0.1, 0.2))); + GameLogEcho(strcat(":anticheat:speedhack:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack), 240, 0, 9999))); // Actually this one seems broken. + GameLogEcho(strcat(":anticheat:speedhack_m1:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m1), 240, 1.01, 1.25))); + GameLogEcho(strcat(":anticheat:speedhack_m2:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m2), 240, 1.01, 1.25))); + GameLogEcho(strcat(":anticheat:speedhack_m3:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m3), 240, 1.01, 1.25))); + GameLogEcho(strcat(":anticheat:speedhack_m4:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m4), 240, 1.01, 1.25))); + GameLogEcho(strcat(":anticheat:speedhack_m5:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m5), 240, 1.01, 1.25))); + GameLogEcho(strcat(":anticheat:div0_strafebot_old:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_old), 120, 0.15, 0.4))); + GameLogEcho(strcat(":anticheat:div0_strafebot_new:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_new), 120, 0.25, 0.8))); + GameLogEcho(strcat(":anticheat:div0_evade:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_evade), 120, 0.2, 0.5))); + GameLogEcho(strcat(":anticheat:idle_snapaim:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_signal) - MEAN_EVALUATE(anticheat_idle_snapaim_noise), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_signal:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_signal), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_noise:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_noise), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_m2:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m2), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_m3:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m3), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_m4:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m4), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_m7:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m7), 120, 0, 9999))); + GameLogEcho(strcat(":anticheat:idle_snapaim_m10:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m10), 120, 0, 9999))); +} + +float anticheat_getvalue(string id) +{ + switch(id) { + case "_time": return servertime - self.anticheat_jointime; + case "speedhack": return MEAN_EVALUATE(anticheat_speedhack); + case "speedhack_m1": return MEAN_EVALUATE(anticheat_speedhack_m1); + case "speedhack_m2": return MEAN_EVALUATE(anticheat_speedhack_m2); + case "speedhack_m3": return MEAN_EVALUATE(anticheat_speedhack_m3); + case "speedhack_m4": return MEAN_EVALUATE(anticheat_speedhack_m4); + case "speedhack_m5": return MEAN_EVALUATE(anticheat_speedhack_m5); + case "div0_strafebot_old": return MEAN_EVALUATE(anticheat_div0_strafebot_old); + case "div0_strafebot_new": return MEAN_EVALUATE(anticheat_div0_strafebot_new); + case "div0_evade": return MEAN_EVALUATE(anticheat_div0_evade); + case "idle_snapaim": return MEAN_EVALUATE(anticheat_idle_snapaim_signal) - MEAN_EVALUATE(anticheat_idle_snapaim_noise); + case "idle_snapaim_signal": return MEAN_EVALUATE(anticheat_idle_snapaim_signal); + case "idle_snapaim_noise": return MEAN_EVALUATE(anticheat_idle_snapaim_noise); + case "idle_snapaim_m2": return MEAN_EVALUATE(anticheat_idle_snapaim_m2); + case "idle_snapaim_m3": return MEAN_EVALUATE(anticheat_idle_snapaim_m3); + case "idle_snapaim_m4": return MEAN_EVALUATE(anticheat_idle_snapaim_m4); + case "idle_snapaim_m7": return MEAN_EVALUATE(anticheat_idle_snapaim_m7); + case "idle_snapaim_m10": return MEAN_EVALUATE(anticheat_idle_snapaim_m10); + } + return -1; +} + +void anticheat_startframe() +{ + anticheat_div0_evade_evasion_delta += frametime * (0.5 + random()); +} + +void anticheat_fixangle() +{ + self.anticheat_fixangle_endtime = servertime + ANTILAG_LATENCY(self) + 0.2; } -void anticheat_serverframe() +void anticheat_endframe() { + entity oldself = self; + FOR_EACH_CLIENT(self) + if (self.fixangle) + anticheat_fixangle(); + self = oldself; anticheat_div0_evade_evasion_delta += frametime * (0.5 + random()); }