Biblioteca CGI-LIB.PL
Publicado por Carcarah do Sertão Agreste 07/07/2004
[ Hits: 5.943 ]
Biblioteca cgi-lib.pl. Autor desconhecido.
Possui várias funções úteis, como ReadParse (para receber valores passados por um formulário).
Sintaxe: do "cgi-lib2.pl" or die "Erro: $!";
Pronto!
$cgi_lib'version = sprintf("%d.%02d", q$Revision: 2.12 $ =~ /(\d+)\.(\d+)/); $cgi_lib'maxdata = 131072; # maximum bytes to accept via POST - 2^17 $cgi_lib'writefiles = 0; # directory to which to write files, or $cgi_lib'filepre = "cgi-lib"; # Prefix of file names, in directory above $cgi_lib'bufsize = 8192; # default buffer size when reading multipart $cgi_lib'maxbound = 100; # maximum boundary length to be encounterd $cgi_lib'headerout = 0; # indicates whether the header has been printed #' sub ReadParse { local (*in) = shift if @_; # CGI input local (*incfn, # Client's filename (may not be provided) *inct, # Client's content-type (may not be provided) *insfn) = @_; # Server's filename (for spooled files) local ($len, $type, $meth, $errflag, $cmdflag, $perlwarn, $got); $perlwarn = $^W; $^W = 0; binmode(STDIN); # we need these for DOS-based systems binmode(STDOUT); # and they shouldn't hurt anything else binmode(STDERR); $type = $ENV{'CONTENT_TYPE'}; $len = $ENV{'CONTENT_LENGTH'}; $meth = $ENV{'REQUEST_METHOD'}; if (!defined $meth || $meth eq '' || $meth eq 'GET' || $type eq 'application/x-www-form-urlencoded') { local ($key, $val, $i); # Read in text if (!defined $meth || $meth eq '') { $in = $ENV{'QUERY_STRING'}; $cmdflag = 1; # also use command-line options } elsif($meth eq 'GET' || $meth eq 'HEAD') { $in = $ENV{'QUERY_STRING'}; } elsif ($meth eq 'POST') { if (($got = read(STDIN, $in, $len) != $len)) {$errflag="Short Read: wanted $len, got $got\n"}; } else { &CgiDie("cgi-lib.pl: Unknown request method: $meth\n"); } @in = split(/[&;]/,$in); push(@in, @ARGV) if $cmdflag; # add command-line parameters foreach $i (0 .. $#in) { # Convert plus to space $in[$i] =~ s/\+/ /g; # Split into key and value. ($key, $val) = split(/=/,$in[$i],2); # splits on the first =. # Convert %XX from hex numbers to alphanumeric $key =~ s/%([A-Fa-f0-9]{2})/pack("c",hex($1))/ge; $val =~ s/%([A-Fa-f0-9]{2})/pack("c",hex($1))/ge; # Associate key and value $in{$key} .= "{FONTE}" if (defined($in{$key})); # {FONTE} is the multiple separator $in{$key} .= $val; } } elsif ($ENV{'CONTENT_TYPE'} =~ m#^multipart/form-data#) { # for efficiency, compile multipart code only if needed $errflag = !(eval <<'END_MULTIPART'); local ($buf, $boundary, $head, @heads, $cd, $ct, $fname, $ctype, $blen); local ($bpos, $lpos, $left, $amt, $fn, $ser); local ($bufsize, $maxbound, $writefiles) = ($cgi_lib'bufsize, $cgi_lib'maxbound, $cgi_lib'writefiles); #' # The following lines exist solely to eliminate spurious warning messages $buf = ''; ($boundary) = $type =~ /boundary="([^"]+)"/; #"; # find boundary ($boundary) = $type =~ /boundary=(\S+)/ unless $boundary; &CgiDie ("Boundary not provided: probably a bug in your server") unless $boundary; $boundary = "--" . $boundary; $blen = length ($boundary); if ($ENV{'REQUEST_METHOD'} ne 'POST') { &CgiDie("Invalid request method for multipart/form-data: $meth\n"); } if ($writefiles) { local($me); stat ($writefiles); $writefiles = "/tmp" unless -d _ && -r _ && -w _; # ($me) = $0 =~ m#([^/]*)$#; $writefiles .= "/$cgi_lib'filepre"; } #" $left = $len; PART: # find each part of the multi-part while reading data while (1) { die $@ if $errflag; $amt = ($left > $bufsize+$maxbound-length($buf) ? $bufsize+$maxbound-length($buf): $left); $errflag = (($got = read(STDIN, $buf, $amt, length($buf))) != $amt); die "Short Read: wanted $amt, got $got\n" if $errflag; $left -= $amt; $in{$name} .= "{FONTE}" if defined $in{$name}; $in{$name} .= $fn if $fn; $name=~/([-\w]+)/; # This allows $insfn{$name} to be untainted if (defined $1) { $insfn{$1} .= "{FONTE}" if defined $insfn{$1}; $insfn{$1} .= $fn if $fn; } BODY: while (($bpos = index($buf, $boundary)) == -1) { die $@ if $errflag; if ($name) { # if no $name, then it's the prologue -- discard if ($fn) { print FILE substr($buf, 0, $bufsize); } else { $in{$name} .= substr($buf, 0, $bufsize); } } $buf = substr($buf, $bufsize); $amt = ($left > $bufsize ? $bufsize : $left); #$maxbound==length($buf); $errflag = (($got = read(STDIN, $buf, $amt, $maxbound)) != $amt); die "Short Read: wanted $amt, got $got\n" if $errflag; $left -= $amt; } if (defined $name) { # if no $name, then it's the prologue -- discard if ($fn) { print FILE substr($buf, 0, $bpos-2); } else { $in {$name} .= substr($buf, 0, $bpos-2); } # kill last \r\n } close (FILE); last PART if substr($buf, $bpos + $blen, 4) eq "--\r\n"; substr($buf, 0, $bpos+$blen+2) = ''; $amt = ($left > $bufsize+$maxbound-length($buf) ? $bufsize+$maxbound-length($buf) : $left); $errflag = (($got = read(STDIN, $buf, $amt, length($buf))) != $amt); die "Short Read: wanted $amt, got $got\n" if $errflag; $left -= $amt; undef $head; undef $fn; HEAD: while (($lpos = index($buf, "\r\n\r\n")) == -1) { die $@ if $errflag; $head .= substr($buf, 0, $bufsize); $buf = substr($buf, $bufsize); $amt = ($left > $bufsize ? $bufsize : $left); #$maxbound==length($buf); $errflag = (($got = read(STDIN, $buf, $amt, $maxbound)) != $amt); die "Short Read: wanted $amt, got $got\n" if $errflag; $left -= $amt; } $head .= substr($buf, 0, $lpos+2); push (@in, $head); @heads = split("\r\n", $head); ($cd) = grep (/^\s*Content-Disposition:/i, @heads); ($ct) = grep (/^\s*Content-Type:/i, @heads); ($name) = $cd =~ /\bname="([^"]+)"/i; #"; ($name) = $cd =~ /\bname=([^\s:;]+)/i unless defined $name; ($fname) = $cd =~ /\bfilename="([^"]*)"/i; #"; # filename can be null-str ($fname) = $cd =~ /\bfilename=([^\s:;]+)/i unless defined $fname; $incfn{$name} .= (defined $in{$name} ? "{FONTE}" : "") . $fname; ($ctype) = $ct =~ /^\s*Content-type:\s*"([^"]+)"/i; #"; ($ctype) = $ct =~ /^\s*Content-Type:\s*([^\s:;]+)/i unless defined $ctype; $inct{$name} .= (defined $in{$name} ? "{FONTE}" : "") . $ctype; if ($writefiles && defined $fname) { $ser++; $fn = $writefiles . ".$$.$ser"; open (FILE, ">$fn") || &CgiDie("Couldn't open $fn\n"); binmode (FILE); # write files accurately } substr($buf, 0, $lpos+4) = ''; undef $fname; undef $ctype; } 1; END_MULTIPART if ($errflag) { local ($errmsg, $value); $errmsg = $@ || $errflag; foreach $value (values %insfn) { unlink(split("{FONTE}",$value)); } &CgiDie($errmsg); } else { # everything's ok. } } else { &CgiDie("cgi-lib.pl: Unknown Content-type: $ENV{'CONTENT_TYPE'}\n"); } # no-ops to avoid warnings $insfn = $insfn; $incfn = $incfn; $inct = $inct; $^W = $perlwarn; return ($errflag ? undef : scalar(@in)); } sub PrintHeader { return "Pragma: no-cache\nContent-type: text/html\n\n"; } sub HtmlTop { local ($title) = @_; return <<END_OF_TEXT; <html> <head> <title>$title</title> </head> <body> END_OF_TEXT } sub HtmlBot { return "</body>\n</html>\n"; } sub SplitParam { local ($param) = @_; local (@params) = split ("{FONTE}", $param); return (wantarray ? @params : $params[0]); } sub MethGet { return (defined $ENV{'REQUEST_METHOD'} && $ENV{'REQUEST_METHOD'} eq "GET"); } sub MethPost { return (defined $ENV{'REQUEST_METHOD'} && $ENV{'REQUEST_METHOD'} eq "POST"); } sub MyBaseUrl { local ($ret, $perlwarn); $perlwarn = $^W; $^W = 0; $ret = 'http://' . $ENV{'SERVER_NAME'} . ($ENV{'SERVER_PORT'} != 80 ? ":$ENV{'SERVER_PORT'}" : '') . $ENV{'SCRIPT_NAME'}; $^W = $perlwarn; return $ret; } sub MyFullUrl { local ($ret, $perlwarn); $perlwarn = $^W; $^W = 0; $ret = 'http://' . $ENV{'SERVER_NAME'} . ($ENV{'SERVER_PORT'} != 80 ? ":$ENV{'SERVER_PORT'}" : '') . $ENV{'SCRIPT_NAME'} . $ENV{'PATH_INFO'} . (length ($ENV{'QUERY_STRING'}) ? "?$ENV{'QUERY_STRING'}" : ''); $^W = $perlwarn; return $ret; } sub MyURL { return &MyBaseUrl; } sub CgiError { local (@msg) = @_; local ($i,$name); if (!@msg) { $name = &MyFullUrl; @msg = ("Erro: script $name apresenta erro fatal\n"); }; if (!$cgi_lib'headerout) { #') print &PrintHeader; print "<html>\n<head>\n<title>$msg[0]</title>\n</head>\n<body>\n"; } print "<h1>$msg[0]</h1>\n"; foreach $i (1 .. $#msg) { print "<p>$msg[$i]</p>\n"; } $cgi_lib'headerout++; } #' sub CgiDie { local (@msg) = @_; &CgiError (@msg); die @msg; } sub PrintVariables { local (*in) = @_ if @_ == 1; local (%in) = @_ if @_ > 1; local ($out, $key, $output); $output = "\n<dl compact>\n"; foreach $key (sort keys(%in)) { foreach (split("{FONTE}", $in{$key})) { ($out = $_) =~ s/\n/<br>\n/g; $output .= "<dt><b>$key</b>\n <dd>:<i>$out</i>:<br>\n"; } } $output .= "</dl>\n"; return $output; } sub PrintEnv { &PrintVariables(*ENV); } $cgi_lib'writefiles = $cgi_lib'writefiles; $cgi_lib'bufsize = $cgi_lib'bufsize ; $cgi_lib'maxbound = $cgi_lib'maxbound; $cgi_lib'version = $cgi_lib'version; $cgi_lib'filepre = $cgi_lib'filepre; 1; return true;
Calculadora de notas versão Perl
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