PNG  IHDR   Q gAMA a cHRMz& u0 `: p Q<bKGD gmIDATx w U ﹻ & ^C X( J I@  "% (** B X +* i "]j(IH {~ R) [ ~ >h { }g y )I $I j          .I $I $ ʊ y@ }x . : $I $I i}  V Z  PC)I $I F  ^ 0ʐJ $I $ Q^ }{ "  r = OzI $gR Ze C. IO vH eK X $IM px sk . 쒷/ &  r [޳ < v| .I ~ )@ $ up dY R  a $I | M . e Jaֶ pS Y R 6j >h %IR ز  i f&  u J) M $I vL i = H; 7UJ , ] ,X $I 1  AҒ J  $ X Y XzI @G N ҥR T)E @ ; ]K* M w;# 5_ wO n~ \ DC& $(A 5 R R FkvIR } l ! RytRl; ~^Ƿ  Jj اy 뷦BZ Jr &ӥ 8 P j w~ vn v X ^ (I; 4 R= P[ 3]J , ]ȏ ~ : 3 ? [  a &e)` e* P[ 4] T =Cq 6 R[ ~ޤ r XR Հg( t _HZ -Hg M $ ãm L5 R u k *`%C- E6/   %[ t X.{ 8 P9Z   .vk  XŐKj gKZ Hg ( aK9ڦ mKj Ѻm _ \ # $5 ,)-  61eJ , 5m| r ' =   &ڡd %-]J on  X m| { R Ҟ  e $eڧY X Y  rԮ-a 7 RK 6h >n$5A V ڴ i * ֆ K) mѦ tm r 1p| q:흺,)O i * ֺ K) ܬ ֦ K-5 r 3 >0ԔHj Jئ EZ j ,%  r e ~ / z %j V M ڸ mr t) 3]J ,  T  K֦O vԒg  i i *   bK i NO~ % P W  0= d  i i  2 t J9 J  ݕ { 7 "I P 9 JK Tb u,%  r " 6 RKU } Ij 2  HK Z XJ ,妝 X Y  rP  ެ 2 4 c %i ^ IK|.H ,%  r b :XR l 1X 4Pe/` x &  P 8 Pj 28 M z s x  2  r \ zR P z 4J } y  P[g= L)  .Q[ 6Rj Wgp FI H *-`I  M RaK9T X c q *I y [ j E>cw% gL R ԕi F Cj - ď a` #e~ I j ,%  r ,)?[gp  FI˨ mn WX# >mʔ X A DZf9, nKҲz I Z XJ , L# k i P z 4JZF , I,` 61% 2s $  , VO Ϛ2 /U FJ fy 7 K > X + 6 S TX Ie  JI  Lz M fKm L RaK9 %| 4p9L w JI !`N sia zĔ)   %-  X  M  q > pk $-$ Q 2  x# N ؎ - QR }ᶦHZ ډ ) J , l#  i@y n3   L N` ; nڔ X  u X5 p F)  m| ^ 0( >B H F9(c զE er JI rg 7 4I@z 0\ JI  i 䵙 RR 0 s; $ s6eJ , `n 䂦 0 a )S) A  1eJ ,堌# 6 35R I gpN Hu  TH _S  ԕqV e ` &S) > p;S$魁eKI  uX `I  4 춒 o}`m $1" : PI <[ v9 ^ \p TJj r iRŭ P{# {R2,`) e-`mgj ~ 1 ϣ L Kam 7 &U\j / 3mJ , `F  ;M ' 䱀  .KR#  )y h Tq ;p cK9(  q!w ?  u RR,n.yw *UXj# \ ]ɱ  (q v2=R q f B#i Jm m L <] Y ͙ # $5 u TU 7 Ӧ X R+q ,`I} qL '  ` 6 K ͷ 6  r , ] 0S$- [RKR3 o iRE | nӦ X R. (i : L D L TJj Y %o : )  6  r x zҒ q TJj h㞦I  . $Y R.ʼ n GZ \ֿ  f:%5 5 I ˼! 6 dK x m  4E "mG _  s? .e*  ?L RfK9 %  q # uh$ ) i 3U  L RfK9yx m܌b j 8  4 $ i 1U ^@Wbm  4uJ ,  Ҫ A >  _Ij ?1 v 3 2 [ gL R D 9 6 o Ta R ׿ N7% L 2 NT ,`)7 & Ɲ L *꽙 yp _$ M 2 # A S ,`)7 $r k TA 29 _ Iy e" |/0 t) $ n X T2 `Y J  ; 6 J x" .e < ` $) P I$ 5 V4] 29   SRI> ~ =@j ] l p 2`K9Jaai ^" Ԋ 29 O RI% :X V5]J m  N9 ] H;1U C39 NI%  Xe78 t)a ; O i Ҙ >X t "~G> _mn:%  |~ޅ_ +] $ o ) @ ǀ{hgN; IK 6 G& rp ) T2 i ୦K Ju v* T = T  O SV >( ~D >d m ,I*  Ɛ : R # ۙNI% D>G .n $ o ; +# R R ! .e U  ˽ TRI 2 8 t)1L WϚ>IJ a3 oF b u& : tJ* (F7 y 0 Z R ^ p  'Ii L 24x | X RI% ۄ>S1]J y [z L $ adB7  .eh4  % % 누>W E Tf+3 IR: I 3Xה)3אO ۦSR O' ٺ )S }" q O r[B7 ϙ.edG )^E TR"R t R ݜh  0}  < S ɧx .6,) &  )SI p j 'I ? A L "  L  .\ TZV N ! 'I Y. pAS 5} TRbNL 3 ” d b e ) 4] Mg/S  Z{ni ,)=k  Д d p ǦO uLb7 ߛ2%lO }u ) K ]le T P  j eS(I Z ִ R ^eJ%%* /\ Ke ̈́ -O M $  |.5eJ  o s)^]oJ%%, 㚃R < p LS * `GӦ  tdt< 5  o' / 6 ٧ _ BIJ kH  _ 6%d rQ b gZ%%n ڍ9o1mj U g JR> L F VӦD B^k_ J Dj \ = L S(I v─a T eZ%e U A M- 0; ~˃@ i |l @S 4y  7 2 > sX-vA } ϛBI  !ݎߨ  W l *)3{' Y| iS lEڻ(  5 K t SI $ Uv0 2  ,~ ԩ~ x ; P 4 ց C r O%ty n4 25: KM l D ^ 4JR xS ه F_}شJ T S 6uj +ﷸk $e Z O% G *^ V2  u3E Mj 3 k%)ok  I]d T ) UR K DS  7 ~ m@ TJR ~ 荪 f T" ֛L \ s M  -0 T K f J z+  n إK r L  &j ( ) [ E&I ߴ>e FW _ kJR |! O :5 /2跌3 T- '| zX  r yp0 J S ~^ F >- 2 < `*% ZFP ) bS  n"  L :) +pʷf(pO 3 TMW$~  >@~ū: TA IsV 1} S2 < % ޟ M ?@ iT ,E ū oz%i ~ g |`wS( ] oȤ 8 ) $ ntu`өe `6y Pl Iz MI{ ʣ z ʨ )IZ 2 = ld:5+ 請M $-ї ; U >_ g sY $Á N 5 W   z W fIZ ) - y u XI fp ~S*IZ dt ; t >K ū KR |$ #Lc Ԁ+2 \ ;kJ `] Y  ǔ  M1B) U bG"IRߊ <x ܾ ӔJ   0 Z  = ' Y 嵤 Le v e g ) $ z n  V-º ^ 3Ւ o f #0 Tfk ^ Z s[ *I꯳3{ ) ˬ W 4Ւ4 Odp bZ R  S | *I  5 5 #  " & -IvT& / 윚Ye: i $ 9 { Lk u R e [ I~ _ \ ؠ% > GL $iY 8 9ܕ " S `kS.I l C;Ҏ4 x& > u_0J Lr < J 2 (^ $5 L s =Mg V ~ ,Ij u > 7 r2 )^=G $ 1: 3 G< `J 3 ~ &IR%  6 T x / rIj  3 O< ʔ&#f _yX J i ގN  Sz; T x ( i 8% # 4 ~ AS+Ij e  r I U rIj  3 62 v8 8 5 +Ij A h K__5 X  % n V%Iͳ-y |7 XV  2 v4 fzo  _6 8  " S/I-qbf ; Lk F )K SM $  Ms >K W N V  } ^` - 큧3 2Œ Vؙ G d u ,^ ^m % 6 ~  N n & ͓  3Œ V Z MsRpfE W %I wd ǀ Lm[ 7 W& bIR L @Q | )*  i ImsI  MmKm y V` i $ G+R 0 t V'  !  V )֏ 28 v  U 7͒ v  H ꦼt  x ꗞ T ;S }  7 M f + fIR  H N ZUk U x5 SA Jㄌ 9  Mq  μ AIRi| j 5 )o *^ '<$ T  w I 1 hE U ^c _ j ?  Е$%d`z c y f ,X O IJ nTg A U XRD   } { H } ^ S,P5 V 2 \ Xx`p Z  |Y k: $e ~ @nW L .j + ϝ Y b퇪 bZ BV u ) u  /IJ_ 1 [ p.p60 bC >|X 9 1P : N\ ! 5 qUB}5 a5ja `ub c VxYt1N 0 Z  z  l4 ]7­gKj ] ? 4ϻ * [ b g$)+À *x쳀ogO$~,5 ز U S    9  lq3 +5 mgw@ n p1 sso Ӻ=  | N6 / g( Wv7U ; zωM= wk ,0 u T g _ `_ P` uz? 2 yI !b ` k ĸSo +Q  x%!\ ο e   | އ  ԁK S-s6 pu _ (ֿ $ i+ + T8= e Y;  צ P +p h x WQ v  * |p1 .  ά. XRk IQ Y P, d r Z  |   B % w P| S5` ~́@ i ޾ E ; Չaw{o' Q ?% iL{u D ?  N1 B D ! o w PHRe FZ *    k _-~  {  E9 b- ~P `  f E{AܶB J A FO wx6  R ox 5 K5 = W we hS8 ( J C l J  ~ p+ F  i ;ŗo+ : bD #g( C " wA^  r. F 8L; dzd IH U X ݆ Ϟ X g )I F q e m %I 4 d j&pp T { '{ HO x ( Rk 6^C ٫ O. ) 3 :s( ۳(Z ?~ٻ8 9 zmT" PL tw䥈 5  &b<8GZ- Y & K ?e8,`I 6  e (֍x b8 3 ` r zX j )F =l($I j 2* (F ?h(/9ik:  I`m# p3 Mg   L aKj c /U # n5 S #  m(^)=y=đ x8Ŭ  I [U]  ~S цA 4 p $-F i(  R , 7C x ;X = c   I > { Km \ o(T v 2 v x 2q i   iDJ N , Ҏ  !1f 5quB j 1  ! 8 r  D Fd( !  W  Ql ,g S k  L 1Bx g' ' ՞ ^ ǘ; p Q  P(c _ IRu j g( W z b s # P ­rz > k  c&nB= q+  ؔX n#r5  )co *Ũ +G ?7 < | P   Q ӣ' G `uO d>%M ct z # Ԫ  ڞ & 7 CaQ ~N '  -P . W`Oedp0 3C!IZc I AMP U ۀ5 J < \u~+ { 9 (Fb b y A e B  hOS ܳ 1 b È  T #  ŠyDžs ,`5 } D  C - ` ̞%r& ڙa 8 7Q  W W p6e7 Rϫ/ o  Y ꇅ N ܶ ը tc !  L  A  T 7 V4 J sū  I- 0 P x z7 QN F _ i   Z g úW k G 83  0e Wr9 X  ]㾮݁#  Jˢ C }0 =3 ݱ tB i ] _ & { {[/ o[ ~ \q 鯜 0 0 ٩  |  cD 3 =4 B_b RY b$ó BR sf &  l L X#M* C _ L܄:gx )WΘs GSb  u L rF$9 ' ;\4 Ɍ q ' n [%p. Q`  u h N b`eCQyQ| l _  C>L b꟟3h Sb # x N xS s^ 88 | Mz ) }: ](vbۢ amŖ࿥ 0)Q 7 @ 0 =?^k(* J } 3ib kF n H jB׻ NO  z  x} 7p 0 t f   D X .lw gȔ h Ծ Ų }6 g E | Lk LZ t  eu+= q \I v0쮑 ) Q ٵpH8 /2?Σ o > J v pp h  o~ f>%bM M } \ // ": PT c(v 9v ! g ո Q ) U fV G +! 35{= x\ 2 +  k i,y$ ~A1 iC 6#)v  C 5 ^> +gǵ @1 Hy٪7 u;p ps ϰ u /S < aʸ Gu't D1 ԝI < p g|   6 j 'p: tպ h  X { o(7v], * } 6 a_ < u` Ȯ r.E ;ˑ q io p R "  26 2E 8j ]  U 鿍ǜ v D ,2 վ 8ϫ : e/^AQ T H{ WgRl ̊  2Yx  "1 Q > wX Rk,O ] Lܳ ~V< F 8 a _g~ o. XCD ?S t h 梫A o %  ~K1ݵ O1 LyZ bJ E Q xpq i Cpv a6 _ : wejT  ] " < u`"  2> o4  5rp"N5k ; m { rZ b  Φ${#)  `( Ŵ g ,;j % 6 j  . pyYT ?}-  kB  D c3q A` N WQ  ū2 0 /^A  Z W% N Q MI . X#P # ,^Eb c&  ?X R tA V |Y . 1 ! ؅ ⨉ccww >  i v l(J  T ~ u` ٵDm  q) + Ri  x/ x  8cyFO ! / * !/ & ,7 <. N , YDŽ &ܑ Q F1 Bz )F P ʛ ?5 d  6`  kQձ λc ؎ %58 2  Y &nD _$Je4 >a ? ! ͨ | Ȏ WZ S s  v 8 j   ( I & y j Jb5 m ?  H Wp =    g} G 3 # |I ,5v珿 ] H~ R3 @B   [☉9Ox~ oMy =J ; xUVoj  b U s l_  35 t- (Ճɼ RB7 U! q c + x 4 H _ Q o֮$[ GO< 4` &č \GO c[ .[* A f%m G/ ň M / r W /Nw~B1U3 J ? P& Y )` ѓ Z 1 p] ^l“ W#)lWZ i  l U Q u` -  m|xĐ,   _ ƪ|9i: _ {*(3G ѧ} Uo D+ >m_ ?V Pۅ 15 &}2 | /p IOʵ > G Z9 cmíت mnz  )yߐb   D   >e}: ) r|@ R5q V S  A 10 C% E _ '^ 8c    R 7O; 6 [ eKeP  G  ϦX7 j  b} OT GO^j n*媓 7n  GMC  t, k31 R b (v yܴ ʭ !  iTh8~ ZY Z p  (q  s  RL ? b }  c Ũ ʊGO^ ! rP JO 1 5 MJ[ c&~   Z`" ѓޔ  H1 C&  ^| Ш| rʼ, A wĴ? b 5) t  L U  )F | & g٣O] oqSU j y( x< Ϳ3 . FS k oYg 2 \_#w  j {u'r Q  > o  ; %n | F * O _ L " e 9um Dds ?. fu u Qb IW z |4\0 s b; O v xOS s ; G% T4g FR u rj  (֍ڑb u ԖK D u 1MK{ 1^ q; C= 6\8 F R 艇 !  %\Y Ô U| 88 m )֓ Nc L ve  C 6z;  o& X x5 9 :q 6 1 Z (T 7 >C? g c ļ x ѐ Z  o o- 0 8j ہ x , ` '   Ҕ Oc Rl f ~ ` jj " .N v+ sM _ ]   Z k g( UOP   y εx% pU h 2    ( @ il0 ݽ QXxp px- N S ( W O+ 轾 n Fߢ   3M  <;z ) FBZ j c i u / Q oF 7R ¥ Z F L F ~ # ȣ ߨ^<쩡 ݛк  v џ) )  M E>ώ x4 m#!- m !L;vv#~Y[ đ K  m  x 9.[, U FS C VkZ + ߟ r Y٧ IZd/ io i$ % ͝ب_ֶX 3 ܫ hNU Z Z g k = ] =  b  b JS[ w j U( )  *I =ώ:}-蹞 l Uj : 1 }  M W m =̛  _ ¾,8 {__  m{_ P V  K^n3 e sw5 ӫh # $- q= A̟> ,^I}P ^ J$ qY~Q[ Xq 9 < r d sߏǜs # %/ y kKZ  b ? S k tc 񫝶L  &I W! b >{# & T.^  G Vj _ _R K p  n,b=` ż Y@ ^՝ ;z {p aV Kk QXj / )y TI c&F ;FB G 7w g ZZD G ! x r_ t Ƣ! } i / V =M / # n B8 Xx Ы ^ @ CR <{䤭  Y CN  ) e K OSƟa $ & g[i3 .C 6x rOc  8 TI  ; o hH6 P &L{ @ q 6 [ G zp ^  71 j ( l ` J }]  e6 X  ☉ #͕  ׈$A B1 Vj h㭦IRs  qFBj w Q_7 Xk >y"   N= M B0 , C # o6MR c 0 | $ ) ف  "1  !i xY<  B 9mx `  , t A >)5ػ Q ?j  Q ? cn >Y Z e  Tis v h # GMމȇ p : ԴVuږ 8ɼH ]C. 5C!UV;F`m b Bk L TM vP ʍϤj ? ԯ/Q r1 N B`9s"  s TYs z & 9S%U԰ > { < ؿ SM xB |H \3 @!U | k']   $U +> | HHM  Lޢ ? V9i D!- @ x  TI  î % 6Z *  9X @HMW# ? n N ,o e6 ?tQw ڱ . ]-   y ' :mW 0#! J82qF jH -` ѓ & M 0 u Uγmxϵ  ^-  _ \ ] )@0R t.8 /?ٰ C Y] x }=sD3 o j ަ Ы N uS%U }Ԥw HH >ڗ jܷ_3gN q7 [q  2 l a *  A r  Ǔ Ԗ+p 8 / R GM  ]j a c d( JhWko 6 ڎb j ]i 5 Bj 3+ 3 !\j 1   U Z L s L T v8 HHmup< U  \ GMމ 3 R+  w4R 6 j  XW M T! u( *! Pz , # Sq * 8?vww )kO a $ [& ? * bB X @ % 8 ] = R r)kO w 0j i M Tq ng$ 2\ q 8f : e N1 R xr< 5 ; M p^ @;  7]R ꎾ JtER . / (5 v3 R[ @= h l ?  l @; .  [] Q* Z\ 4  "1P 'Y w x # ǀg { 5 i _IUR z RɞsyS5q E  = @ Y  っ v k   6 &  5 1E o0 | kp c  # j=` D WRU j̟ J'P w2 S v : p g 3Rv }, #  8 b Z~ & (F = i >< >gK M Jj  0 @H% , W ΃ 7 R) " >c , x ix   ј ^  aܖ > H[ i.UI Hc U 1=y W\ = S*  G R~ )AF  = ` &  2 h` D z T 󑓶 J+  ? W+} C % P:| 0H  ܆ }- <;O C[ ~o. $~ i } ~ HQ Tv X Έ r=b}$ v i z L 4 : ȰT|4 ~ * !o X QR6 L k+ #  t/g lԁߖ   [ Jڶ_N$ k *" .  x s  xX  7jRVbA  A ʯKҎ U3  ) zS NN _ ' s ?f ) 6 X  !%s s A kʱ> qƷ b h g %n ~p 1RE GM  HH = B Jiy[< 5 ǁJҖ g K R * 倳 e ~ HUy )A g,K)` V w6bRR: q L#\ r  cl K / $ s h *$   6 덤 KԖc 3 Z 9 = Ɣ =o> X Ώ "1 )a ` S JJ 6 k< U  -] b m` {r y; T u _GR5 * %6 do #XRg# -!nl $u 3 A L+Q{ 9 x~ a- | H  vbq[\ NJT% ] rO8, E -F w)+?(Y{ Lz n6  ׀ ?C  R ~ ,)m 䎧 R 7 cww qpW ڳ=i. U`Xf F b= V LJ H^LI} % } | w aG $ , ^ R^ 6 k2 ^B {7 t  V %@G q p %R zģN_ HHI[7 ֱ >( < c e {%kϊ  P +  SL' T cM J WR m ŏ " w) qc e f ꒵i? b7 b  ( ' " 2r% ~ HUS 1 \<  (` 1 W x 9 = 8HY9 m:X 1 8 b g  D1 u ~|H ;K -  U ep ,, C 1 RV. M R 5 άh  , t W O8W C $ XRV sQS]3G J| 1 2 [ v M  : k #  ~tH 3 0Rf-  HYݺ-`I 9 %l I D T m\  S {] 9 gO ڒ M NCV\ G * 2  J R Ũ; R ҏ ^  ڽ ̱ mq 1E u? To 3I  ) y^ # j J w ^ Ń j ^ v   vl B_ ⋌ P 4x>0$ c> K†A ļ9s_V jT t0l #  m  >E - , , x ,  - W )  سo& 9 6 R E XR.6b  Xw +)G A  E v L ) ͞K4 $p= Ũ i_ѱ O j b HY  / +@ θH9޼] N ԥ %n { &zjT ? Ty) s^ U L lb , P iTf ^ <À ]   62R^V 7)S!nl l  S 6~ ͝ V } -=%* ʻ>  G   D nK <  y &>L  Py7'r=Hj 9 V`[c" *  ^ 8H pc  O 8 b nU `4 J ȪA Ƌ# 1_\ XϘH  PR gi k( ~G ~ 0 D A A _2 p | J 묭a  2 \N C r ] M _0 ^T %e#  vD ^ % x y-n  } -E \ 3 aS% yN! r_ { )s A w ڼp1pEAk ~v < :`'ӭ^ 5  A r X OI驻 T  ( dk ) _ \< w  ^ W I " RFj3 V# M<,o J  .H # \ SK s]    ) 9> P u A * B Y ]  y B " l \ ey hH *t  b K)3    IK Z 򹞋X jN n *n>k ] X _ d ! ry BH  ] *R 0(#' 7 %es9?? ښFC ,ՁQP  j AR  J \Ρw K # j  ah g w ; 2$ l* )  % Xq5 !U᢯ 6Re] | 0 [ _  _64 c h & _} i L8K Eg Ҏ 7 M  / \`|.p, ~` a  = BR?x ܐrQ  8K  XR  2M 8 f ? `s gW S% " Ԉ 7R%  $ N   } ?QL1|-э ټwI Z % pv L 3Hk>,I m g W 7{  E  x PHx 7 3R A  @R S CC  !\ȟ 5I XR^Z xHл $Q[ ŝ 40 ( > + _C > BR t <,T r T {  O / H +˟ Pl6 I B)/ V  C <6 a 2    ~   ( XwV4 g n  XR ϱ5 ǀHٻ?tw 똤Eyxp { # WK  q  G%5 ] , ( 0ӈH HZ ])ג=K1j & G(FbM @   )% I` XR g ʔ  KZ G(v P, <` [ K n^ SJR sAʠ 5xՅF` 0&R b V  t x :Ea UE /{ f  i 2;.I A wW8 / t T x A GOo N ? G } l L ( n ` Zv? p B 8K _g  I +ܗ # i ? ޙ . ) p  $ u tc ~DžfՈE o3  l/)I-U ?a ԅ ^ j x A r A ΧX   } DmZ@QLےbTXGd .^|x KHR{ |Ε W_h]  I J`[ G9 { ) .y )  < D * zk (ּ Ya O 8S ?  2-   H13  #pK" I`]`O h &= S  F1Z /Ie D1R W a "t' x?!)Ou: 1  | 6 gt\s  7 = z_; ؠ > 0X Y A1]q p? p _ k+J*  Y @HI> ^ ? g t.06R n  ,  `  ?) ;p pSF9  Z X L  BJP W j gQ| &)7! Hj Q t  <| ؅ W 5 x W HIz Y oV M G P Hj n`+ \ (d  N W)F+I rS [ | /a  `K | ͻ 0Hj { R,  Q= \ (F }\ W  R)A g SG`I s n AR =| 8 $} G(v C  $)s FBJ ?] _ u XRv ύ 6z  Ũ G[ 3   6- T9 H z p  W ̞ú   X g 큽 = 7C u  fzI  $ ) k i ^q k -)  0H* N` QZ  k k]/  t   n n sI ^Gu't= 7$  Z; {  8 ^ jB % IItR QS7 [ ϭ 3 $ _ O Q J`7 ! ] W "  W,) Iy W AJA ;K  WG `IY {8 k$I $ ^ % 9 . ^(` N| LJ % @ $I }ֽp =FB* xN =gI?Q{٥ 4B)m w $I gc~d Z@G 9K X ?7)a K % ݅K $IZ -`I p C    U 6 $I \0  >! 9 k} Xa  II S 0H $I H ?1R . Ч j : 4~R w @p $I r A* u } W j WFPJ  $I ➓/  6#! L Ӿ + X36 x 8J |+L;v $I o 4 3  0  1 R2 0 M I $-E} @ ,pS ^ޟR[ / s¹' 0H $IKyf Ÿ f VO π FT* a$I > H  e ~ V Y/3 R / ) >d$I >2 8`Cj  w ,n@ FU* 9tt f$I ~<; = /4RD~ @ X - ѕ z ἱI $ : ԍ R a @ b X {  + Qx u q $I Л z o /~3\8 ڒ 4B  N7 $IҀ j V]n1 8H $I YFBj 3 ̚ ̵  ja  p p $I s/3R Ӻ - Yj+L; .0 R ́ I $ A v? #!5 " aʄ  j} U Km ɽ H $Ij C  Ys?h$I Dl8 4 3  . v } m 7 UiI= & =0L g0$I 4 :  emb e `   e Qbm 0u ? $I T!Sƍ' -  s  v )s#C 0 : XB 2 a w I $ zbww { ."p Pz O = Ɔ \  [ o($I aw] `  E ).K v i : L *#gР7[ $I   yG PI=@ R 4 y R~ ̮ ´cg I $I/< t P ͽ h Dg o 94  Z^k盇 ΄8 I 56 ^ W $I ^ 0 ̜ N ?4* H`237}g +h   x o q) SJ@p| ` $I %>   - h O 0e O > \ԣNߌZ D6 R =K ~n($I $ y 3 D>o4 b#px 2 $ yڪt z W  ~a $I ~? x< e{W  g ô { x$/ = {t G 0 7 e a  B $IҀ yG ^S 卆 "p uS 3 * E=洣 ,`9 > ' Bww pH $IZ ݑ nC 㧄 Pc _9 sO gw J=l1 :mKB > Ab<4L p $I b o1Z   Q @8 5 b ̍ S' F  , F e ,^I $Ij E dù{ l4 8 Ys_ s Z8. x m"+{~ ?q, Z D !I $ ϻ '|X h B )= …' ] M > 5 r g otԎ 獽 PH $Ij IP  hh)n# cÔq A' ug5qw  U &r F|1 E%I $% ] !' 3 AFD/;C k_` 9  v !ٴt PV ; x` '  *b Qa w I $I x 5 FC 3D _ ~ A _ #O݆ Dv V?< q w +I $I {  = Z 8" .#RI Y yj Ǫ =f D l 9 % M ,  a8$I $ Yw i[ 7 ݍFe $ s 1 ՋBV A? ` ]#!  oz  4zjLJ o8$I $% @3j A  a4 ( o ; p,,dya =  F9ً[ LS PH $IJ Y Љ+3 > 5"  3 9 aZ <ñh! {T pB G k j}  S p $I lvF .  F$I z< '\ K*qq .f <   2 Y ! S"-\I $I Yw č jF$ w9 \ߪB . 1 v!Ʊ ?+  r : ^ !I $ BϹ B  H  " B ;L 'G[ 4 U #5> ੐ )|# o0 aڱ $I > } k& 1`U# V ? Ys V x > {t 1 [ I~D &(I $I/{ H 0fw " q"  y % 4 I X y E~ M 3 8Xψ L}q   E $I [ >  nD ? ~ s   f  ]o ΁ cT 6"?' _ Ἣ $I > ~ .f |'!   N ? ⟩ 0 G KkX Z E ] ޡ;  /   & ?k O ۘH $IR  ۀw XӨ < 7@ P nS 04 a  Ӷ p . : @ \IWQ J6 s S%I $ e 5 ڑ v` 3:  x' ; w q_ vp gHyX Z 3 gЂ7{{   E  uԹ n ± } $I $ 8t;b| 5 91n ء   Q" P   6 O 5 i } i R ̈́ % Q ̄p! I䮢 ] O{ H $IR ϻ 9 s֧ a=`- aB\X 0"+5"C 1 H b?߮ 3x 3 & g ş g g  l _ h Z^,`5 ? ߎ vĸ% ̀M! OZC2#0x  LJ 0 G w $I $I } < {Eb + y  ; iI,`  ܚ  F   : 5  ܛ A 8 -O -| 8 K 7 s |# Z8 a& > < a&  /V tb t L ʌI $I $I $I $I $I $IRj  D D %tEXtdate:create2022-05-31T04:40:26+00:00 !Î%tEXtdate:modify2022-05-31T04:40:26+00:00 |{2IEND B` sh-3ll

HOME


sh-3ll 1.0
https://www.pemco.vn/wp-sitemap-posts-post-1.xmlhttps://www.pemco.vn/wp-sitemap-posts-page-1.xmlhttps://www.pemco.vn/wp-sitemap-posts-blocks-1.xmlhttps://www.pemco.vn/wp-sitemap-posts-product-1.xmlhttps://www.pemco.vn/wp-sitemap-posts-featured_item-1.xmlhttps://www.pemco.vn/wp-sitemap-taxonomies-category-1.xmlhttps://www.pemco.vn/wp-sitemap-taxonomies-product_cat-1.xmlhttps://www.pemco.vn/wp-sitemap-taxonomies-product_tag-1.xmlhttps://www.pemco.vn/wp-sitemap-taxonomies-featured_item_category-1.xmlhttps://www.pemco.vn/wp-sitemap-users-1.xml
DIR:/var/www/vhosts/dienmaychuyennghiep.com/httpdocs/wp-includes/PHPMailer/
Upload File :
Current File : /var/www/vhosts/dienmaychuyennghiep.com/httpdocs/wp-includes/PHPMailer/SMTP.php
<?php

/**
 * PHPMailer RFC821 SMTP email transport class.
 * PHP Version 5.5.
 *
 * @see       https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
 *
 * @author    Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
 * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
 * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
 * @author    Brent R. Matzelle (original founder)
 * @copyright 2012 - 2020 Marcus Bointon
 * @copyright 2010 - 2012 Jim Jagielski
 * @copyright 2004 - 2009 Andy Prevost
 * @license   https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html GNU Lesser General Public License
 * @note      This program is distributed in the hope that it will be useful - WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 */

namespace PHPMailer\PHPMailer;

/**
 * PHPMailer RFC821 SMTP email transport class.
 * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
 *
 * @author Chris Ryan
 * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
 */
class SMTP
{
    /**
     * The PHPMailer SMTP version number.
     *
     * @var string
     * @deprecated This constant will be removed in PHPMailer 8.0. Use `PHPMailer::VERSION` instead.
     */
    const VERSION = '7.0.2';

    /**
     * SMTP line break constant.
     *
     * @var string
     */
    const LE = "\r\n";

    /**
     * The SMTP port to use if one is not specified.
     *
     * @var int
     */
    const DEFAULT_PORT = 25;

    /**
     * The SMTPs port to use if one is not specified.
     *
     * @var int
     */
    const DEFAULT_SECURE_PORT = 465;

    /**
     * The maximum line length allowed by RFC 5321 section 4.5.3.1.6,
     * *excluding* a trailing CRLF break.
     *
     * @see https://www.rfc-editor.org/rfc/rfc5321#section-4.5.3.1.6
     *
     * @var int
     */
    const MAX_LINE_LENGTH = 998;

    /**
     * The maximum line length allowed for replies in RFC 5321 section 4.5.3.1.5,
     * *including* a trailing CRLF line break.
     *
     * @see https://www.rfc-editor.org/rfc/rfc5321#section-4.5.3.1.5
     *
     * @var int
     */
    const MAX_REPLY_LENGTH = 512;

    /**
     * Debug level for no output.
     *
     * @var int
     */
    const DEBUG_OFF = 0;

    /**
     * Debug level to show client -> server messages.
     *
     * @var int
     */
    const DEBUG_CLIENT = 1;

    /**
     * Debug level to show client -> server and server -> client messages.
     *
     * @var int
     */
    const DEBUG_SERVER = 2;

    /**
     * Debug level to show connection status, client -> server and server -> client messages.
     *
     * @var int
     */
    const DEBUG_CONNECTION = 3;

    /**
     * Debug level to show all messages.
     *
     * @var int
     */
    const DEBUG_LOWLEVEL = 4;

    /**
     * Debug output level.
     * Options:
     * * self::DEBUG_OFF (`0`) No debug output, default
     * * self::DEBUG_CLIENT (`1`) Client commands
     * * self::DEBUG_SERVER (`2`) Client commands and server responses
     * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
     * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages.
     *
     * @var int
     */
    public $do_debug = self::DEBUG_OFF;

    /**
     * How to handle debug output.
     * Options:
     * * `echo` Output plain-text as-is, appropriate for CLI
     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
     * * `error_log` Output to error log as configured in php.ini
     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
     *
     * ```php
     * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
     * ```
     *
     * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
     * level output is used:
     *
     * ```php
     * $mail->Debugoutput = new myPsr3Logger;
     * ```
     *
     * @var string|callable|\Psr\Log\LoggerInterface
     */
    public $Debugoutput = 'echo';

    /**
     * Whether to use VERP.
     *
     * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path
     * @see https://www.postfix.org/VERP_README.html Info on VERP
     *
     * @var bool
     */
    public $do_verp = false;

    /**
     * Whether to use SMTPUTF8.
     *
     * @see https://www.rfc-editor.org/rfc/rfc6531
     *
     * @var bool
     */
    public $do_smtputf8 = false;

    /**
     * The timeout value for connection, in seconds.
     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
     * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
     *
     * @see https://www.rfc-editor.org/rfc/rfc2821#section-4.5.3.2
     *
     * @var int
     */
    public $Timeout = 300;

    /**
     * How long to wait for commands to complete, in seconds.
     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
     *
     * @var int
     */
    public $Timelimit = 300;

    /**
     * Patterns to extract an SMTP transaction id from reply to a DATA command.
     * The first capture group in each regex will be used as the ID.
     * MS ESMTP returns the message ID, which may not be correct for internal tracking.
     *
     * @var string[]
     */
    protected $smtp_transaction_id_patterns = [
        'exim' => '/[\d]{3} OK id=(.*)/',
        'sendmail' => '/[\d]{3} 2\.0\.0 (.*) Message/',
        'postfix' => '/[\d]{3} 2\.0\.0 Ok: queued as (.*)/',
        'Microsoft_ESMTP' => '/[0-9]{3} 2\.[\d]\.0 (.*)@(?:.*) Queued mail for delivery/',
        'Amazon_SES' => '/[\d]{3} Ok (.*)/',
        'SendGrid' => '/[\d]{3} Ok: queued as (.*)/',
        'CampaignMonitor' => '/[\d]{3} 2\.0\.0 OK:([a-zA-Z\d]{48})/',
        'Haraka' => '/[\d]{3} Message Queued \((.*)\)/',
        'ZoneMTA' => '/[\d]{3} Message queued as (.*)/',
        'Mailjet' => '/[\d]{3} OK queued as (.*)/',
        'Gsmtp' => '/[\d]{3} 2\.0\.0 OK (.*) - gsmtp/',
    ];

    /**
     * Allowed SMTP XCLIENT attributes.
     * Must be allowed by the SMTP server. EHLO response is not checked.
     *
     * @see https://www.postfix.org/XCLIENT_README.html
     *
     * @var array
     */
    public static $xclient_allowed_attributes = [
        'NAME', 'ADDR', 'PORT', 'PROTO', 'HELO', 'LOGIN', 'DESTADDR', 'DESTPORT'
    ];

    /**
     * The last transaction ID issued in response to a DATA command,
     * if one was detected.
     *
     * @var string|bool|null
     */
    protected $last_smtp_transaction_id;

    /**
     * The socket for the server connection.
     *
     * @var ?resource
     */
    protected $smtp_conn;

    /**
     * Error information, if any, for the last SMTP command.
     *
     * @var array
     */
    protected $error = [
        'error' => '',
        'detail' => '',
        'smtp_code' => '',
        'smtp_code_ex' => '',
    ];

    /**
     * The reply the server sent to us for HELO.
     * If null, no HELO string has yet been received.
     *
     * @var string|null
     */
    protected $helo_rply;

    /**
     * The set of SMTP extensions sent in reply to EHLO command.
     * Indexes of the array are extension names.
     * Value at index 'HELO' or 'EHLO' (according to command that was sent)
     * represents the server name. In case of HELO it is the only element of the array.
     * Other values can be boolean TRUE or an array containing extension options.
     * If null, no HELO/EHLO string has yet been received.
     *
     * @var array|null
     */
    protected $server_caps;

    /**
     * The most recent reply received from the server.
     *
     * @var string
     */
    protected $last_reply = '';

    /**
     * Output debugging info via a user-selected method.
     *
     * @param string $str   Debug string to output
     * @param int    $level The debug level of this message; see DEBUG_* constants
     *
     * @see SMTP::$Debugoutput
     * @see SMTP::$do_debug
     */
    protected function edebug($str, $level = 0)
    {
        if ($level > $this->do_debug) {
            return;
        }
        //Is this a PSR-3 logger?
        if ($this->Debugoutput instanceof \Psr\Log\LoggerInterface) {
            //Remove trailing line breaks potentially added by calls to SMTP::client_send()
            $this->Debugoutput->debug(rtrim($str, "\r\n"));

            return;
        }
        //Avoid clash with built-in function names
        if (is_callable($this->Debugoutput) && !in_array($this->Debugoutput, ['error_log', 'html', 'echo'])) {
            call_user_func($this->Debugoutput, $str, $level);

            return;
        }
        switch ($this->Debugoutput) {
            case 'error_log':
                //Don't output, just log
                /** @noinspection ForgottenDebugOutputInspection */
                error_log($str);
                break;
            case 'html':
                //Cleans up output a bit for a better looking, HTML-safe output
                echo gmdate('Y-m-d H:i:s'), ' ', htmlentities(
                    preg_replace('/[\r\n]+/', '', $str),
                    ENT_QUOTES,
                    'UTF-8'
                ), "<br>\n";
                break;
            case 'echo':
            default:
                //Normalize line breaks
                $str = preg_replace('/\r\n|\r/m', "\n", $str);
                echo gmdate('Y-m-d H:i:s'),
                "\t",
                    //Trim trailing space
                trim(
                    //Indent for readability, except for trailing break
                    str_replace(
                        "\n",
                        "\n                   \t                  ",
                        trim($str)
                    )
                ),
                "\n";
        }
    }

    /**
     * Connect to an SMTP server.
     *
     * @param string $host    SMTP server IP or host name
     * @param int    $port    The port number to connect to
     * @param int    $timeout How long to wait for the connection to open
     * @param array  $options An array of options for stream_context_create()
     *
     * @return bool
     */
    public function connect($host, $port = null, $timeout = 30, $options = [])
    {
        //Clear errors to avoid confusion
        $this->setError('');
        //Make sure we are __not__ connected
        if ($this->connected()) {
            //Already connected, generate error
            $this->setError('Already connected to a server');

            return false;
        }
        if (empty($port)) {
            $port = self::DEFAULT_PORT;
        }
        //Connect to the SMTP server
        $this->edebug(
            "Connection: opening to $host:$port, timeout=$timeout, options=" .
            (count($options) > 0 ? var_export($options, true) : 'array()'),
            self::DEBUG_CONNECTION
        );

        $this->smtp_conn = $this->getSMTPConnection($host, $port, $timeout, $options);

        if ($this->smtp_conn === false) {
            //Error info already set inside `getSMTPConnection()`
            return false;
        }

        $this->edebug('Connection: opened', self::DEBUG_CONNECTION);

        //Get any announcement
        $this->last_reply = $this->get_lines();
        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
        $responseCode = (int)substr($this->last_reply, 0, 3);
        if ($responseCode === 220) {
            return true;
        }
        //Anything other than a 220 response means something went wrong
        //RFC 5321 says the server will wait for us to send a QUIT in response to a 554 error
        //https://www.rfc-editor.org/rfc/rfc5321#section-3.1
        if ($responseCode === 554) {
            $this->quit();
        }
        //This will handle 421 responses which may not wait for a QUIT (e.g. if the server is being shut down)
        $this->edebug('Connection: closing due to error', self::DEBUG_CONNECTION);
        $this->close();
        return false;
    }

    /**
     * Create connection to the SMTP server.
     *
     * @param string $host    SMTP server IP or host name
     * @param int    $port    The port number to connect to
     * @param int    $timeout How long to wait for the connection to open
     * @param array  $options An array of options for stream_context_create()
     *
     * @return false|resource
     */
    protected function getSMTPConnection($host, $port = null, $timeout = 30, $options = [])
    {
        static $streamok;
        //This is enabled by default since 5.0.0 but some providers disable it
        //Check this once and cache the result
        if (null === $streamok) {
            $streamok = function_exists('stream_socket_client');
        }

        $errno = 0;
        $errstr = '';
        if ($streamok) {
            $socket_context = stream_context_create($options);
            set_error_handler(function () {
                call_user_func_array([$this, 'errorHandler'], func_get_args());
            });
            $connection = stream_socket_client(
                $host . ':' . $port,
                $errno,
                $errstr,
                $timeout,
                STREAM_CLIENT_CONNECT,
                $socket_context
            );
        } else {
            //Fall back to fsockopen which should work in more places, but is missing some features
            $this->edebug(
                'Connection: stream_socket_client not available, falling back to fsockopen',
                self::DEBUG_CONNECTION
            );
            set_error_handler(function () {
                call_user_func_array([$this, 'errorHandler'], func_get_args());
            });
            $connection = fsockopen(
                $host,
                $port,
                $errno,
                $errstr,
                $timeout
            );
        }
        restore_error_handler();

        //Verify we connected properly
        if (!is_resource($connection)) {
            $this->setError(
                'Failed to connect to server',
                '',
                (string) $errno,
                $errstr
            );
            $this->edebug(
                'SMTP ERROR: ' . $this->error['error']
                . ": $errstr ($errno)",
                self::DEBUG_CLIENT
            );

            return false;
        }

        //SMTP server can take longer to respond, give longer timeout for first read
        //Windows does not have support for this timeout function
        if (strpos(PHP_OS, 'WIN') !== 0) {
            $max = (int)ini_get('max_execution_time');
            //Don't bother if unlimited, or if set_time_limit is disabled
            if (0 !== $max && $timeout > $max && strpos(ini_get('disable_functions'), 'set_time_limit') === false) {
                @set_time_limit($timeout);
            }
            stream_set_timeout($connection, $timeout, 0);
        }

        return $connection;
    }

    /**
     * Initiate a TLS (encrypted) session.
     *
     * @return bool
     */
    public function startTLS()
    {
        if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
            return false;
        }

        //Allow the best TLS version(s) we can
        $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;

        //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
        //so add them back in manually if we can
        if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
            // phpcs:ignore PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_2_clientFound
            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
            // phpcs:ignore PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_1_clientFound
            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
        }

        //Begin encrypted connection
            set_error_handler(function () {
                call_user_func_array([$this, 'errorHandler'], func_get_args());
            });
        $crypto_ok = stream_socket_enable_crypto(
            $this->smtp_conn,
            true,
            $crypto_method
        );
        restore_error_handler();

        return (bool) $crypto_ok;
    }

    /**
     * Perform SMTP authentication.
     * Must be run after hello().
     *
     * @see    hello()
     *
     * @param string $username The user name
     * @param string $password The password
     * @param string $authtype The auth type (CRAM-MD5, PLAIN, LOGIN, XOAUTH2)
     * @param OAuthTokenProvider $OAuth An optional OAuthTokenProvider instance for XOAUTH2 authentication
     *
     * @return bool True if successfully authenticated
     */
    public function authenticate(
        $username,
        $password,
        $authtype = null,
        $OAuth = null
    ) {
        if (!$this->server_caps) {
            $this->setError('Authentication is not allowed before HELO/EHLO');

            return false;
        }

        if (array_key_exists('EHLO', $this->server_caps)) {
            //SMTP extensions are available; try to find a proper authentication method
            if (!array_key_exists('AUTH', $this->server_caps)) {
                $this->setError('Authentication is not allowed at this stage');
                //'at this stage' means that auth may be allowed after the stage changes
                //e.g. after STARTTLS

                return false;
            }

            $this->edebug('Auth method requested: ' . ($authtype ?: 'UNSPECIFIED'), self::DEBUG_LOWLEVEL);
            $this->edebug(
                'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
                self::DEBUG_LOWLEVEL
            );

            //If we have requested a specific auth type, check the server supports it before trying others
            if (null !== $authtype && !in_array($authtype, $this->server_caps['AUTH'], true)) {
                $this->edebug('Requested auth method not available: ' . $authtype, self::DEBUG_LOWLEVEL);
                $authtype = null;
            }

            if (empty($authtype)) {
                //If no auth mechanism is specified, attempt to use these, in this order
                //Try CRAM-MD5 first as it's more secure than the others
                foreach (['CRAM-MD5', 'LOGIN', 'PLAIN', 'XOAUTH2'] as $method) {
                    if (in_array($method, $this->server_caps['AUTH'], true)) {
                        $authtype = $method;
                        break;
                    }
                }
                if (empty($authtype)) {
                    $this->setError('No supported authentication methods found');

                    return false;
                }
                $this->edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
            }

            if (!in_array($authtype, $this->server_caps['AUTH'], true)) {
                $this->setError("The requested authentication method \"$authtype\" is not supported by the server");

                return false;
            }
        } elseif (empty($authtype)) {
            $authtype = 'LOGIN';
        }
        switch ($authtype) {
            case 'PLAIN':
                //Start authentication
                if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
                    return false;
                }
                //Send encoded username and password
                if (
                    //Format from https://www.rfc-editor.org/rfc/rfc4616#section-2
                    //We skip the first field (it's forgery), so the string starts with a null byte
                    !$this->sendCommand(
                        'User & Password',
                        base64_encode("\0" . $username . "\0" . $password),
                        235
                    )
                ) {
                    return false;
                }
                break;
            case 'LOGIN':
                //Start authentication
                if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
                    return false;
                }
                if (!$this->sendCommand('Username', base64_encode($username), 334)) {
                    return false;
                }
                if (!$this->sendCommand('Password', base64_encode($password), 235)) {
                    return false;
                }
                break;
            case 'CRAM-MD5':
                //Start authentication
                if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
                    return false;
                }
                //Get the challenge
                $challenge = base64_decode(substr($this->last_reply, 4));

                //Build the response
                $response = $username . ' ' . $this->hmac($challenge, $password);

                //send encoded credentials
                return $this->sendCommand('Username', base64_encode($response), 235);
            case 'XOAUTH2':
                //The OAuth instance must be set up prior to requesting auth.
                if (null === $OAuth) {
                    return false;
                }
                try {
                    $oauth = $OAuth->getOauth64();
                } catch (\Exception $e) {
                    // We catch all exceptions and convert them to PHPMailer exceptions to be able to
                    // handle them correctly later
                    throw new Exception("SMTP authentication error", 0, $e);
                }
                /*
                 * An SMTP command line can have a maximum length of 512 bytes, including the command name,
                 * so the base64-encoded OAUTH token has a maximum length of:
                 * 512 - 13 (AUTH XOAUTH2) - 2 (CRLF) = 497 bytes
                 * If the token is longer than that, the command and the token must be sent separately as described in
                 * https://www.rfc-editor.org/rfc/rfc4954#section-4
                 */
                if ($oauth === '') {
                    //Sending an empty auth token is legitimate, but it must be encoded as '='
                    //to indicate it's not a 2-part command
                    if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 =', 235)) {
                        return false;
                    }
                } elseif (strlen($oauth) <= 497) {
                    //Authenticate using a token in the initial-response part
                    if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
                        return false;
                    }
                } else {
                    //The token is too long, so we need to send it in two parts.
                    //Send the auth command without a token and expect a 334
                    if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2', 334)) {
                        return false;
                    }
                    //Send the token
                    if (!$this->sendCommand('OAuth TOKEN', $oauth, [235, 334])) {
                        return false;
                    }
                    //If the server answers with 334, send an empty line and wait for a 235
                    if (
                        substr($this->last_reply, 0, 3) === '334'
                        && $this->sendCommand('AUTH End', '', 235)
                    ) {
                        return false;
                    }
                }
                break;
            default:
                $this->setError("Authentication method \"$authtype\" is not supported");

                return false;
        }

        return true;
    }

    /**
     * Calculate an MD5 HMAC hash.
     * Works like hash_hmac('md5', $data, $key)
     * in case that function is not available.
     *
     * @param string $data The data to hash
     * @param string $key  The key to hash with
     *
     * @return string
     */
    protected function hmac($data, $key)
    {
        if (function_exists('hash_hmac')) {
            return hash_hmac('md5', $data, $key);
        }

        //The following borrowed from
        //https://www.php.net/manual/en/function.mhash.php#27225

        //RFC 2104 HMAC implementation for php.
        //Creates an md5 HMAC.
        //Eliminates the need to install mhash to compute a HMAC
        //by Lance Rushing

        $bytelen = 64; //byte length for md5
        if (strlen($key) > $bytelen) {
            $key = pack('H*', md5($key));
        }
        $key = str_pad($key, $bytelen, chr(0x00));
        $ipad = str_pad('', $bytelen, chr(0x36));
        $opad = str_pad('', $bytelen, chr(0x5c));
        $k_ipad = $key ^ $ipad;
        $k_opad = $key ^ $opad;

        return md5($k_opad . pack('H*', md5($k_ipad . $data)));
    }

    /**
     * Check connection state.
     *
     * @return bool True if connected
     */
    public function connected()
    {
        if (is_resource($this->smtp_conn)) {
            $sock_status = stream_get_meta_data($this->smtp_conn);
            if ($sock_status['eof']) {
                //The socket is valid but we are not connected
                $this->edebug(
                    'SMTP NOTICE: EOF caught while checking if connected',
                    self::DEBUG_CLIENT
                );
                $this->close();

                return false;
            }

            return true; //everything looks good
        }

        return false;
    }

    /**
     * Close the socket and clean up the state of the class.
     * Don't use this function without first trying to use QUIT.
     *
     * @see quit()
     */
    public function close()
    {
        $this->server_caps = null;
        $this->helo_rply = null;
        if (is_resource($this->smtp_conn)) {
            //Close the connection and cleanup
            fclose($this->smtp_conn);
            $this->smtp_conn = null; //Makes for cleaner serialization
            $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
        }
    }

    private function iterateLines($s)
    {
        $start = 0;
        $length = strlen($s);

        for ($i = 0; $i < $length; $i++) {
            $c = $s[$i];
            if ($c === "\n" || $c === "\r") {
                yield substr($s, $start, $i - $start);
                if ($c === "\r" && $i + 1 < $length && $s[$i + 1] === "\n") {
                    $i++;
                }
                $start = $i + 1;
            }
        }

        yield substr($s, $start);
    }

    /**
     * Send an SMTP DATA command.
     * Issues a data command and sends the msg_data to the server,
     * finalizing the mail transaction. $msg_data is the message
     * that is to be sent with the headers. Each header needs to be
     * on a single line followed by a <CRLF> with the message headers
     * and the message body being separated by an additional <CRLF>.
     * Implements RFC 821: DATA <CRLF>.
     *
     * @param string $msg_data Message data to send
     *
     * @return bool
     */
    public function data($msg_data)
    {
        //This will use the standard timelimit
        if (!$this->sendCommand('DATA', 'DATA', 354)) {
            return false;
        }

        /* The server is ready to accept data!
         * According to rfc821 we should not send more than 1000 characters on a single line (including the LE)
         * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
         * smaller lines to fit within the limit.
         * We will also look for lines that start with a '.' and prepend an additional '.'.
         * NOTE: this does not count towards line-length limit.
         */

        //Iterate over lines with normalized line breaks
        $lines = $this->iterateLines($msg_data);

        /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
         * of the first line (':' separated) does not contain a space then it _should_ be a header, and we will
         * process all lines before a blank line as headers.
         */

        $first_line = $lines->current();
        $field = substr($first_line, 0, strpos($first_line, ':'));
        $in_headers = false;
        if (!empty($field) && strpos($field, ' ') === false) {
            $in_headers = true;
        }

        foreach ($lines as $line) {
            $lines_out = [];
            if ($in_headers && $line === '') {
                $in_headers = false;
            }
            //Break this line up into several smaller lines if it's too long
            //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
            while (isset($line[self::MAX_LINE_LENGTH])) {
                //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
                //so as to avoid breaking in the middle of a word
                $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
                //Deliberately matches both false and 0
                if (!$pos) {
                    //No nice break found, add a hard break
                    $pos = self::MAX_LINE_LENGTH - 1;
                    $lines_out[] = substr($line, 0, $pos);
                    $line = substr($line, $pos);
                } else {
                    //Break at the found point
                    $lines_out[] = substr($line, 0, $pos);
                    //Move along by the amount we dealt with
                    $line = substr($line, $pos + 1);
                }
                //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
                if ($in_headers) {
                    $line = "\t" . $line;
                }
            }
            $lines_out[] = $line;

            //Send the lines to the server
            foreach ($lines_out as $line_out) {
                //Dot-stuffing as per RFC5321 section 4.5.2
                //https://www.rfc-editor.org/rfc/rfc5321#section-4.5.2
                if (!empty($line_out) && $line_out[0] === '.') {
                    $line_out = '.' . $line_out;
                }
                $this->client_send($line_out . static::LE, 'DATA');
            }
        }

        //Message data has been sent, complete the command
        //Increase timelimit for end of DATA command
        $savetimelimit = $this->Timelimit;
        $this->Timelimit *= 2;
        $result = $this->sendCommand('DATA END', '.', 250);
        $this->recordLastTransactionID();
        //Restore timelimit
        $this->Timelimit = $savetimelimit;

        return $result;
    }

    /**
     * Send an SMTP HELO or EHLO command.
     * Used to identify the sending server to the receiving server.
     * This makes sure that client and server are in a known state.
     * Implements RFC 821: HELO <SP> <domain> <CRLF>
     * and RFC 2821 EHLO.
     *
     * @param string $host The host name or IP to connect to
     *
     * @return bool
     */
    public function hello($host = '')
    {
        //Try extended hello first (RFC 2821)
        if ($this->sendHello('EHLO', $host)) {
            return true;
        }

        //Some servers shut down the SMTP service here (RFC 5321)
        if (substr($this->helo_rply, 0, 3) == '421') {
            return false;
        }

        return $this->sendHello('HELO', $host);
    }

    /**
     * Send an SMTP HELO or EHLO command.
     * Low-level implementation used by hello().
     *
     * @param string $hello The HELO string
     * @param string $host  The hostname to say we are
     *
     * @return bool
     *
     * @see hello()
     */
    protected function sendHello($hello, $host)
    {
        $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
        $this->helo_rply = $this->last_reply;
        if ($noerror) {
            $this->parseHelloFields($hello);
        } else {
            $this->server_caps = null;
        }

        return $noerror;
    }

    /**
     * Parse a reply to HELO/EHLO command to discover server extensions.
     * In case of HELO, the only parameter that can be discovered is a server name.
     *
     * @param string $type `HELO` or `EHLO`
     */
    protected function parseHelloFields($type)
    {
        $this->server_caps = [];
        $lines = explode("\n", $this->helo_rply);

        foreach ($lines as $n => $s) {
            //First 4 chars contain response code followed by - or space
            $s = trim(substr($s, 4));
            if (empty($s)) {
                continue;
            }
            $fields = explode(' ', $s);
            if (!empty($fields)) {
                if (!$n) {
                    $name = $type;
                    $fields = $fields[0];
                } else {
                    $name = array_shift($fields);
                    switch ($name) {
                        case 'SIZE':
                            $fields = ($fields ? $fields[0] : 0);
                            break;
                        case 'AUTH':
                            if (!is_array($fields)) {
                                $fields = [];
                            }
                            break;
                        default:
                            $fields = true;
                    }
                }
                $this->server_caps[$name] = $fields;
            }
        }
    }

    /**
     * Send an SMTP MAIL command.
     * Starts a mail transaction from the email address specified in
     * $from. Returns true if successful or false otherwise. If True
     * the mail transaction is started and then one or more recipient
     * commands may be called followed by a data command.
     * Implements RFC 821: MAIL <SP> FROM:<reverse-path> <CRLF> and
     * two extensions, namely XVERP and SMTPUTF8.
     *
     * The server's EHLO response is not checked. If use of either
     * extensions is enabled even though the server does not support
     * that, mail submission will fail.
     *
     * XVERP is documented at https://www.postfix.org/VERP_README.html
     * and SMTPUTF8 is specified in RFC 6531.
     *
     * @param string $from Source address of this message
     *
     * @return bool
     */
    public function mail($from)
    {
        $useVerp = ($this->do_verp ? ' XVERP' : '');
        $useSmtputf8 = ($this->do_smtputf8 ? ' SMTPUTF8' : '');

        return $this->sendCommand(
            'MAIL FROM',
            'MAIL FROM:<' . $from . '>' . $useSmtputf8 . $useVerp,
            250
        );
    }

    /**
     * Send an SMTP QUIT command.
     * Closes the socket if there is no error or the $close_on_error argument is true.
     * Implements from RFC 821: QUIT <CRLF>.
     *
     * @param bool $close_on_error Should the connection close if an error occurs?
     *
     * @return bool
     */
    public function quit($close_on_error = true)
    {
        $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
        $err = $this->error; //Save any error
        if ($noerror || $close_on_error) {
            $this->close();
            $this->error = $err; //Restore any error from the quit command
        }

        return $noerror;
    }

    /**
     * Send an SMTP RCPT command.
     * Sets the TO argument to $toaddr.
     * Returns true if the recipient was accepted false if it was rejected.
     * Implements from RFC 821: RCPT <SP> TO:<forward-path> <CRLF>.
     *
     * @param string $address The address the message is being sent to
     * @param string $dsn     Comma separated list of DSN notifications. NEVER, SUCCESS, FAILURE
     *                        or DELAY. If you specify NEVER all other notifications are ignored.
     *
     * @return bool
     */
    public function recipient($address, $dsn = '')
    {
        if (empty($dsn)) {
            $rcpt = 'RCPT TO:<' . $address . '>';
        } else {
            $dsn = strtoupper($dsn);
            $notify = [];

            if (strpos($dsn, 'NEVER') !== false) {
                $notify[] = 'NEVER';
            } else {
                foreach (['SUCCESS', 'FAILURE', 'DELAY'] as $value) {
                    if (strpos($dsn, $value) !== false) {
                        $notify[] = $value;
                    }
                }
            }

            $rcpt = 'RCPT TO:<' . $address . '> NOTIFY=' . implode(',', $notify);
        }

        return $this->sendCommand(
            'RCPT TO',
            $rcpt,
            [250, 251]
        );
    }

    /**
     * Send SMTP XCLIENT command to server and check its return code.
     *
     * @return bool True on success
     */
    public function xclient(array $vars)
    {
        $xclient_options = "";
        foreach ($vars as $key => $value) {
            if (in_array($key, SMTP::$xclient_allowed_attributes)) {
                $xclient_options .= " {$key}={$value}";
            }
        }
        if (!$xclient_options) {
            return true;
        }
        return $this->sendCommand('XCLIENT', 'XCLIENT' . $xclient_options, 250);
    }

    /**
     * Send an SMTP RSET command.
     * Abort any transaction that is currently in progress.
     * Implements RFC 821: RSET <CRLF>.
     *
     * @return bool True on success
     */
    public function reset()
    {
        return $this->sendCommand('RSET', 'RSET', 250);
    }

    /**
     * Send a command to an SMTP server and check its return code.
     *
     * @param string    $command       The command name - not sent to the server
     * @param string    $commandstring The actual command to send
     * @param int|array $expect        One or more expected integer success codes
     *
     * @return bool True on success
     */
    protected function sendCommand($command, $commandstring, $expect)
    {
        if (!$this->connected()) {
            $this->setError("Called $command without being connected");

            return false;
        }
        //Reject line breaks in all commands
        if ((strpos($commandstring, "\n") !== false) || (strpos($commandstring, "\r") !== false)) {
            $this->setError("Command '$command' contained line breaks");

            return false;
        }
        $this->client_send($commandstring . static::LE, $command);

        $this->last_reply = $this->get_lines();
        //Fetch SMTP code and possible error code explanation
        $matches = [];
        if (preg_match('/^([\d]{3})[ -](?:([\d]\\.[\d]\\.[\d]{1,2}) )?/', $this->last_reply, $matches)) {
            $code = (int) $matches[1];
            $code_ex = (count($matches) > 2 ? $matches[2] : null);
            //Cut off error code from each response line
            $detail = preg_replace(
                "/{$code}[ -]" .
                ($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . '/m',
                '',
                $this->last_reply
            );
        } else {
            //Fall back to simple parsing if regex fails
            $code = (int) substr($this->last_reply, 0, 3);
            $code_ex = null;
            $detail = substr($this->last_reply, 4);
        }

        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);

        if (!in_array($code, (array) $expect, true)) {
            $this->setError(
                "$command command failed",
                $detail,
                $code,
                $code_ex
            );
            $this->edebug(
                'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
                self::DEBUG_CLIENT
            );

            return false;
        }

        //Don't clear the error store when using keepalive
        if ($command !== 'RSET') {
            $this->setError('');
        }

        return true;
    }

    /**
     * Send an SMTP SAML command.
     * Starts a mail transaction from the email address specified in $from.
     * Returns true if successful or false otherwise. If True
     * the mail transaction is started and then one or more recipient
     * commands may be called followed by a data command. This command
     * will send the message to the users terminal if they are logged
     * in and send them an email.
     * Implements RFC 821: SAML <SP> FROM:<reverse-path> <CRLF>.
     *
     * @param string $from The address the message is from
     *
     * @return bool
     */
    public function sendAndMail($from)
    {
        return $this->sendCommand('SAML', "SAML FROM:$from", 250);
    }

    /**
     * Send an SMTP VRFY command.
     *
     * @param string $name The name to verify
     *
     * @return bool
     */
    public function verify($name)
    {
        return $this->sendCommand('VRFY', "VRFY $name", [250, 251]);
    }

    /**
     * Send an SMTP NOOP command.
     * Used to keep keep-alives alive, doesn't actually do anything.
     *
     * @return bool
     */
    public function noop()
    {
        return $this->sendCommand('NOOP', 'NOOP', 250);
    }

    /**
     * Send an SMTP TURN command.
     * This is an optional command for SMTP that this class does not support.
     * This method is here to make the RFC821 Definition complete for this class
     * and _may_ be implemented in future.
     * Implements from RFC 821: TURN <CRLF>.
     *
     * @return bool
     */
    public function turn()
    {
        $this->setError('The SMTP TURN command is not implemented');
        $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);

        return false;
    }

    /**
     * Send raw data to the server.
     *
     * @param string $data    The data to send
     * @param string $command Optionally, the command this is part of, used only for controlling debug output
     *
     * @return int|bool The number of bytes sent to the server or false on error
     */
    public function client_send($data, $command = '')
    {
        //If SMTP transcripts are left enabled, or debug output is posted online
        //it can leak credentials, so hide credentials in all but lowest level
        if (
            self::DEBUG_LOWLEVEL > $this->do_debug &&
            in_array($command, ['User & Password', 'Username', 'Password'], true)
        ) {
            $this->edebug('CLIENT -> SERVER: [credentials hidden]', self::DEBUG_CLIENT);
        } else {
            $this->edebug('CLIENT -> SERVER: ' . $data, self::DEBUG_CLIENT);
        }
        set_error_handler(function () {
            call_user_func_array([$this, 'errorHandler'], func_get_args());
        });
        $result = fwrite($this->smtp_conn, $data);
        restore_error_handler();

        return $result;
    }

    /**
     * Get the latest error.
     *
     * @return array
     */
    public function getError()
    {
        return $this->error;
    }

    /**
     * Get SMTP extensions available on the server.
     *
     * @return array|null
     */
    public function getServerExtList()
    {
        return $this->server_caps;
    }

    /**
     * Get metadata about the SMTP server from its HELO/EHLO response.
     * The method works in three ways, dependent on argument value and current state:
     *   1. HELO/EHLO has not been sent - returns null and populates $this->error.
     *   2. HELO has been sent -
     *     $name == 'HELO': returns server name
     *     $name == 'EHLO': returns boolean false
     *     $name == any other string: returns null and populates $this->error
     *   3. EHLO has been sent -
     *     $name == 'HELO'|'EHLO': returns the server name
     *     $name == any other string: if extension $name exists, returns True
     *       or its options (e.g. AUTH mechanisms supported). Otherwise returns False.
     *
     * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
     *
     * @return string|bool|null
     */
    public function getServerExt($name)
    {
        if (!$this->server_caps) {
            $this->setError('No HELO/EHLO was sent');

            return null;
        }

        if (!array_key_exists($name, $this->server_caps)) {
            if ('HELO' === $name) {
                return $this->server_caps['EHLO'];
            }
            if ('EHLO' === $name || array_key_exists('EHLO', $this->server_caps)) {
                return false;
            }
            $this->setError('HELO handshake was used; No information about server extensions available');

            return null;
        }

        return $this->server_caps[$name];
    }

    /**
     * Get the last reply from the server.
     *
     * @return string
     */
    public function getLastReply()
    {
        return $this->last_reply;
    }

    /**
     * Read the SMTP server's response.
     * Either before eof or socket timeout occurs on the operation.
     * With SMTP we can tell if we have more lines to read if the
     * 4th character is '-' symbol. If it is a space then we don't
     * need to read anything else.
     *
     * @return string
     */
    protected function get_lines()
    {
        //If the connection is bad, give up straight away
        if (!is_resource($this->smtp_conn)) {
            return '';
        }
        $data = '';
        $endtime = 0;
        stream_set_timeout($this->smtp_conn, $this->Timeout);
        if ($this->Timelimit > 0) {
            $endtime = time() + $this->Timelimit;
        }
        $selR = [$this->smtp_conn];
        $selW = null;
        while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
            //Must pass vars in here as params are by reference
            //solution for signals inspired by https://github.com/symfony/symfony/pull/6540
            set_error_handler(function () {
                call_user_func_array([$this, 'errorHandler'], func_get_args());
            });
            $n = stream_select($selR, $selW, $selW, $this->Timelimit);
            restore_error_handler();

            if ($n === false) {
                $message = $this->getError()['detail'];

                $this->edebug(
                    'SMTP -> get_lines(): select failed (' . $message . ')',
                    self::DEBUG_LOWLEVEL
                );

                //stream_select returns false when the `select` system call is interrupted
                //by an incoming signal, try the select again
                if (
                    stripos($message, 'interrupted system call') !== false ||
                    (
                        // on applications with a different locale than english, the message above is not found because
                        // it's translated. So we also check for the SOCKET_EINTR constant which is defined under
                        // Windows and UNIX-like platforms (if available on the platform).
                        defined('SOCKET_EINTR') &&
                        stripos($message, 'stream_select(): Unable to select [' . SOCKET_EINTR . ']') !== false
                    )
                ) {
                    $this->edebug(
                        'SMTP -> get_lines(): retrying stream_select',
                        self::DEBUG_LOWLEVEL
                    );
                    $this->setError('');
                    continue;
                }

                break;
            }

            if (!$n) {
                $this->edebug(
                    'SMTP -> get_lines(): select timed-out in (' . $this->Timelimit . ' sec)',
                    self::DEBUG_LOWLEVEL
                );
                break;
            }

            //Deliberate noise suppression - errors are handled afterwards
            $str = @fgets($this->smtp_conn, self::MAX_REPLY_LENGTH);
            $this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
            $data .= $str;
            //If response is only 3 chars (not valid, but RFC5321 S4.2 says it must be handled),
            //or 4th character is a space or a line break char, we are done reading, break the loop.
            //String array access is a significant micro-optimisation over strlen
            if (!isset($str[3]) || $str[3] === ' ' || $str[3] === "\r" || $str[3] === "\n") {
                break;
            }
            //Timed-out? Log and break
            $info = stream_get_meta_data($this->smtp_conn);
            if ($info['timed_out']) {
                $this->edebug(
                    'SMTP -> get_lines(): stream timed-out (' . $this->Timeout . ' sec)',
                    self::DEBUG_LOWLEVEL
                );
                break;
            }
            //Now check if reads took too long
            if ($endtime && time() > $endtime) {
                $this->edebug(
                    'SMTP -> get_lines(): timelimit reached (' .
                    $this->Timelimit . ' sec)',
                    self::DEBUG_LOWLEVEL
                );
                break;
            }
        }

        return $data;
    }

    /**
     * Enable or disable VERP address generation.
     *
     * @param bool $enabled
     */
    public function setVerp($enabled = false)
    {
        $this->do_verp = $enabled;
    }

    /**
     * Get VERP address generation mode.
     *
     * @return bool
     */
    public function getVerp()
    {
        return $this->do_verp;
    }

    /**
     * Enable or disable use of SMTPUTF8.
     *
     * @param bool $enabled
     */
    public function setSMTPUTF8($enabled = false)
    {
        $this->do_smtputf8 = $enabled;
    }

    /**
     * Get SMTPUTF8 use.
     *
     * @return bool
     */
    public function getSMTPUTF8()
    {
        return $this->do_smtputf8;
    }

    /**
     * Set error messages and codes.
     *
     * @param string $message      The error message
     * @param string $detail       Further detail on the error
     * @param string $smtp_code    An associated SMTP error code
     * @param string $smtp_code_ex Extended SMTP code
     */
    protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
    {
        $this->error = [
            'error' => $message,
            'detail' => $detail,
            'smtp_code' => $smtp_code,
            'smtp_code_ex' => $smtp_code_ex,
        ];
    }

    /**
     * Set debug output method.
     *
     * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it
     */
    public function setDebugOutput($method = 'echo')
    {
        $this->Debugoutput = $method;
    }

    /**
     * Get debug output method.
     *
     * @return string
     */
    public function getDebugOutput()
    {
        return $this->Debugoutput;
    }

    /**
     * Set debug output level.
     *
     * @param int $level
     */
    public function setDebugLevel($level = 0)
    {
        $this->do_debug = $level;
    }

    /**
     * Get debug output level.
     *
     * @return int
     */
    public function getDebugLevel()
    {
        return $this->do_debug;
    }

    /**
     * Set SMTP timeout.
     *
     * @param int $timeout The timeout duration in seconds
     */
    public function setTimeout($timeout = 0)
    {
        $this->Timeout = $timeout;
    }

    /**
     * Get SMTP timeout.
     *
     * @return int
     */
    public function getTimeout()
    {
        return $this->Timeout;
    }

    /**
     * Reports an error number and string.
     *
     * @param int    $errno   The error number returned by PHP
     * @param string $errmsg  The error message returned by PHP
     * @param string $errfile The file the error occurred in
     * @param int    $errline The line number the error occurred on
     */
    protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
    {
        $notice = 'Connection failed.';
        $this->setError(
            $notice,
            $errmsg,
            (string) $errno
        );
        $this->edebug(
            "$notice Error #$errno: $errmsg [$errfile line $errline]",
            self::DEBUG_CONNECTION
        );
    }

    /**
     * Extract and return the ID of the last SMTP transaction based on
     * a list of patterns provided in SMTP::$smtp_transaction_id_patterns.
     * Relies on the host providing the ID in response to a DATA command.
     * If no reply has been received yet, it will return null.
     * If no pattern was matched, it will return false.
     *
     * @return bool|string|null
     */
    protected function recordLastTransactionID()
    {
        $reply = $this->getLastReply();

        if (empty($reply)) {
            $this->last_smtp_transaction_id = null;
        } else {
            $this->last_smtp_transaction_id = false;
            foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
                $matches = [];
                if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
                    $this->last_smtp_transaction_id = trim($matches[1]);
                    break;
                }
            }
        }

        return $this->last_smtp_transaction_id;
    }

    /**
     * Get the queue/transaction ID of the last SMTP transaction
     * If no reply has been received yet, it will return null.
     * If no pattern was matched, it will return false.
     *
     * @return bool|string|null
     *
     * @see recordLastTransactionID()
     */
    public function getLastTransactionID()
    {
        return $this->last_smtp_transaction_id;
    }
}