Ñïèñîê ðàññûëêè íîâîñòåé

Ïîìèìî ãîñòåâîé êíèãè îñíîâíûì àòðèáóòîì ñåðüåçíîãî Web-óçëà ÿâëÿåòñÿ ñïèñîê ðàññûëêè íîâîñòåé. Perl-ïðîãðàììà äëÿ âûïîëíåíèÿ ðàññûëêè äîâîëüíî ïðîñòà, ïðè æåëàíèè åå ìîæíî íåñêîëüêî óëó÷øèòü, äîáàâèâ íîâûå âîçìîæíîñòè (ñì. ëèñòèíã 9).

Ïðè ñîçäàíèè Web-óçëà, îðèåíòèðîâàííîãî êàê íà ðóññêîÿçû÷íûõ, òàê è íà àíãëîÿçû÷íûõ ïîñåòèòåëåé, â ïðîãðàììå ïðåäóñìîòðåíà âîçìîæíîñòü âûäà÷è ñîîáùåíèé â ñîîòâåòñòâóþùåì âèäå. Îñíîâíàÿ ôîðìà (ðèñ. 3) â çàâèñèìîñòè îò ÿçûêà óçëà äîëæíà îáÿçàòåëüíî ñîäåðæàòü ïîëå:

<input type=»hidden» name=»lang» value=”english”> 

èëè

<input type=”hidden” name=”lang” value=”russian”>

äëÿ ðàñïîçíàâàíèÿ ÿçûêà âûäà÷è ñîîáùåíèé.

×òîáû îáëåã÷èòü ðàçáîð ïðîãðàììû ðàññûëêè íîâîñòåé, â íåé ðàññòàâëåíû êîììåíòàðèè.

Ëèñòèíã 9. Ñïèñîê ðàññûëêè íîâîñòåé

#!/usr/local/bin/perl
############################
# SCRIPT: POSTER.CGI       #
# (c) Michael Yevdokimov   #
############################

require ‘cgi_lib.pl’;

$PathList=”../mlist”; #ôèçè÷åñêèé ïóòü ê êàòàëîãó ñ áàçîé ïîñåòèòåëåé
$PathNews=”../mnews”; #ôèçè÷åñêèé ïóòü ê êàòàëîãó ñ äîêóìåíòîì äëÿ ïîñûëêè
$ReturnPage=”index.html” #ñòðàíèöà, ê êîòîðîé íóæíî áóäåò âîçâðàòèòüñÿ

$mail_prog=”/usr/sbin/sendmail”; #ôèçè÷åñêèé àäðåñ ê ïî÷òîâîé ïðîãðàììå
$Title=”News List”; #çàãîëîâîê ñïèñêà ðàññûëêè
$From=”maillist\@mysite.ru”; #àäðåñ ñïèñêà ðàññûëêè
$Website=”www.mysite.ru”; #èñòî÷íèê ñïèñêà ðàññûëêè äëÿ Subject
# Method Detection and Decoding
&Parse_Data;  # äåêîäèðîâàòü äàííûå èç ôîðìû / URL

$Lang=$CGI{‘lang’};  # òèï ÿçûêà (Ðóñ/Àíãë) 
$User=$CGI{‘user_name’}; # èìÿ ïîñåòèòåëÿ
$Email=$CGI{‘user_email’}; # email ïîñåòèòåëÿ
$Flag=$CGI{‘flag’}; # ôëàã äëÿ ïðîâåðêè íåêîòîðûõ óñëîâèé â ïðîãðàììå
$Command=$CGI{‘command’}; # ñ÷èòàòü êîìàíäó (send èëè ‘’)

if ($Lang eq ‘english’) {
	$db=”userbase.eng”; # áàçà ñ èíîñòðàííûìè ïîäïèñ÷èêàìè
        $nf=”news.eng” # àíãëèéñêàÿ ”ïîñûëêà” (îáû÷íûé TXT)
} else {
        if ($Lang eq ‘russian’) {
        	$db=”userbase.rus”; ” ñ ðîññèéñêèìè ïîäïèñ÷èêàìè
		$nf=”news.rus”; ðóññêàÿ ”ïîñûëêà” (îáû÷íûé TXT)
        } else {
		&Print_Head; # àíàëîãè÷íî print ”Content-type:text/html\n\n”;
		print ”<H3>ATTENTION! ERROR OCCURED!<H3>\n”;
		print ”PRESS <A HREF=\”$ENV{‘HTTP_REFERER’}\”>[BACK]</A> TO RETURN!\n”;
		exit(0);                       
        }
}

if ($Command eq ‘send’) { # ïðîâåðêà òîé ñàìîé êîìàíäû
 	if ($db eq ‘userbase.eng’) {
		#Post English News
		&Post_News($User,$Email);
	} else {
		#Post Russian News
		&Post_News($User,$Email);
	}	
}

#Ïðîâåðèòü çíà÷åíèå àòðèáóòà flag
if ($Flag eq ‘eng_yes’) { # åñëè èíôîðìàöèÿ âåðíà
	&Check_Email; # âûçâàòü ïîäïðîãðàììó ïðîâåðêè ââåäåííîãî email
	&Add_Record($Path,$db); # äîáàâèòü çàïèñü â ñîîòâåò. áàçó
	&Print_Head; 
	print ”Your records were added to database
\n”;
	print ”Click <a href=\”/$ReturnPage\”>here</a> to return...\n”;
        exit(0);
} else {
	if ($Flag eq ‘rus_yes’) {
	&Check_Email;
	&Add_Record;
	&Print_Head;
	print ”Âàøè äàííûå çàíåñåíû â áàçó äàííûõ
\n”;
	print ”Íàæìèòå <a href=\”/$ReturnPage\”>çäåñü</a> äëÿ âîçâðàòà...\n”;
	        exit(0);
	} else {
	}
}

# âûâåñòè ôîðìó ïîäòâåðæäåíèÿ ïðàâèëüíîñòè ââåäåííîé èíôîðìàöèè
if ($db eq ‘userbase.eng’) { 
#Àíãëèéñêèé âàðèàíò ôîðìû
  &Print_Head;
  print ”<H2><b>News List Registration</b></H2>\n”;
  print ”<PRE>\n”;
  print ”<FORM METHOD=\”GET\” ACTION=\”/cgi-bin/poster.cgi\”>\n”;
  print ”<input type=hidden name=lang value=english><br>\n”;
  print ” Your Name: <input type=text name=user_name size=15 value=\”$User\”><br>\n”;
  print ”Your Email: <input type=text name=user_email  size=15 value=\”$Email\”><br>\n”;
# äîáàâëÿåì â ôîðìó ñêðûòîå ïîëå flag, çíà÷åíèå êîòîðîãî ïðîâåðÿåòñÿ
# ýòîé ïðîãðàììîé: åñëè flag ðàâåí îäíîìó èç äâóõ óêàçàííûõ çäåñü
# çíà÷åíèé, òî âûïîëíÿåòñÿ ïîäïðîãðàììà äîáàâëåíèÿ ïîëüçîâàòåëÿ â ÁÄ 
  print ”<input type=hidden name=flag value=eng_yes><br>\n”;
  print ”<input type=submit value=\”    Correct    \”>  ”;
  print ”<input type=reset value=\”    Incorrect   \”><br>\n”;
  print ”</FORM>\n”;
  print ”</PRE>\n”;
} else {
#Ðóññêèé âàðèàíò ôîðìû
  &Print_Head;
  print ”<H2><b>Ðåãèñòðàöèÿ â ñïèñêå ðàññûëêè íîâîñòåé</b> </H2>\n”;
  print ”<PRE>\n”;
  print ”<FORM METHOD=\”GET\” ACTION=\”/cgi-bin/poster.cgi\”>\n”;
  print ”<input type=hidden name=lang value=russian><br>\n”;
  print ” Âàøå èìÿ: <input type=text name=user_name size=15 value=\”$User\”><br>\n”;
  print ”Âàø Email: <input type=text name=user_email size=15 value=\”$Email\”><br>\n”;
# äîáàâëÿåì ñêðûòîå ïîëå flag (ñì. îïèñàíèå âûøå)
  print ”<input type=hidden name=flag value=rus_yes><br>\n”;
  print ”<input type=submit value=\”Âñå ïðàâèëüíî\”>  ”;
  print ”<input type=reset value=\”Íåïðàâèëüíî\”><br>\n”;
  print ”</FORM>\n”;
  print ”</PRE>\n”;
}

sub Add_Record { # ïîäïðîãðàììà çàïèñè ïîñåòèòåëåé â ÁÄ
   open (UB, ”>>$PathList/$db”) || die (”Error during adding a record $!”);
     print UB join (”::”, ”$User”, ”$Email”), ”\n”;
   close (UB);
}

sub Post_News { # ïîäïðîãðàììà ðàññûëêè íîâîñòåé
        #Îòêðûòü UB - áàçó ïîëüçîâàòåëåé
        open (UB, ”$PathList/$db”) || die (”Error during
reading file $!”);
	   while (<UB>) {
             $line=$_;
   	     ($User, $Email) = split (/::/, $line);
               #Íàïðàâèòü âûâîä íà ”email”
                 open (MAIL, ”|$mail_prog $Email”);
			print MAIL ”From: $From\n”;
                  print MAIL ”Reply-to: $From\n”;
		      print MAIL ”Subject: $Title from $Website\n”;
		      print MAIL ”\n\n”;
                  print MAIL ”Dear $User,\n\n”;
	       #Îòêðûâàåì ôàéë íîâîñòåé è ñ÷èòûâàåì èç íåãî äàííûå
               open (NF, ”$PathNews/$nf”) || die (”Error during reading file $!”);
	         while (<NF>) {
	           print MAIL ”$_”; # íàïðàâëÿåì ñ÷èòàííûå äàííûå íà email
	         }
	       close (NF);
               #
		  print MAIL ”\n\nThis script was created by Michael Yevdokimov\n”;
		  print MAIL ”Developer’s website: http://www.basicnet.sonnet.ru\n”;
		  print MAIL ”\n\n”;
		  close (MAIL);        	       
	   }
        close (UB);
        &Print_Head;
	  print ”PRESS <A HREF=\”/$ReturnPage\”>[BACK]</A>
TO RETURN!\n”;
	exit(0);
}

sub Check_Email { # ïîäïðîãðàììà ïðîâåðêè ïðàâèëüíîñòè
ââåäåííîãî email
  &Err_Msg;
  if ($Email !~ /.+\@.+\..+/) {
  	&Print_Head;
        &Err_Msg;
	print ”$ErrMsg\n”;
	#print ”Location: $ENV{‘HTTP_REFERER’}\n\n”;
	exit(0);
  }	
  #exit(0);
}

sub Err_Msg { # ôóíêöèÿ âûâîäà ñîîáùåíèÿ îá îøèáêå â email
  if ($Lang eq ‘english’) {
	$ErrMsg=”<B>ATTENTION! ERROR OCCURED!</B><P>\n
                 <I>Email: <B>$Email</B>
                 which you have entered is incorrect!</I><P>\n
                 <B>PRESS [BACK] TO RETURN<B>\n”;
	return $ErrMsg;
  } else {
   	$ErrMsg=”<B>ÂÍÈÌÀÍÈÅ! ÂÎÇÍÈÊËÀ ÎØÈÁÊÀ!</B><P>\n
                 <I>Email: <B>$Email</B>,
                 êîòîðûé âû ââåëè íåïðàâèëåí!</I><P>\n
                 <B>ÍÀÆÌÈÒÅ [BACK] ÄËß ÂÎÇÂÐÀÒÀ</B>\n”;
	return $ErrMsg;
  }  
}