mirror of
https://github.com/fhem/fhem-mirror.git
synced 2025-04-16 04:36:02 +00:00
HttpUtils: complete rewrite, addition of HttpUtils_NonblockingGet
git-svn-id: https://svn.fhem.de/fhem/trunk@4514 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
rudolfkoenig
parent
2930641431
commit
d1d39de466
@ -53,94 +53,174 @@ urlDecode($) {
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return $_;
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}
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##################
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# - if data (which is urlEncoded) is set, then a POST is performed, else a GET.
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# - noshutdown must be set for e.g the Fritz!Box
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# 4.0 is needed for some clients trying to reach fhem.de, 2.0 was not enough
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sub
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CustomGetFileFromURL($$@)
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HttpUtils_ConnErr($)
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{
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my ($quiet, $url, $timeout, $data, $noshutdown, $loglevel) = @_;
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$timeout = 4.0 if(!defined($timeout));
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$loglevel = 4 if(!$loglevel);
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my $redirects= 0;
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RETRY:
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my $displayurl= $quiet ? "<hidden>" : $url;
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Log3 undef, $loglevel, "CustomGetFileFromURL url=$displayurl";
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if($url !~ /^(http|https):\/\/(([^:\/]+):([^:\/]+)@)?([^:\/]+)(:\d+)?(\/.*)$/) {
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: malformed or unsupported URL";
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return undef;
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my ($hash) = @_;
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if(defined($hash->{FD})) {
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delete($hash->{FD});
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delete($selectlist{$hash});
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$hash->{callback}($hash, "connect to $hash->{addr} timed out", "");
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}
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my ($protocol,$authstring,$user,$pwd,$host,$port,$path) =
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($1,$2,$3,$4,$5,$6,$7);
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}
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sub
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HttpUtils_ReadErr($)
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{
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my ($hash) = @_;
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if(defined($hash->{FD})) {
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delete($hash->{FD});
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delete($selectlist{$hash});
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$hash->{callback}($hash, "read from $hash->{addr} timed out", "");
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}
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}
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sub
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HttpUtils_Connect($)
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{
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my ($hash) = @_;
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$hash->{timeout} = 4 if(!defined($hash->{timeout}));
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$hash->{loglevel} = 4 if(!$hash->{loglevel});
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$hash->{redirects} = 0 if(!$hash->{redirects});
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$hash->{displayurl} = $hash->{hideurl} ? "<hidden>" : $hash->{url};
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Log3 undef, $hash->{loglevel}, "HttpUtils url=$hash->{displayurl}";
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if($hash->{url} !~
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/^(http|https):\/\/(([^:\/]+):([^:\/]+)@)?([^:\/]+)(:\d+)?(\/.*)$/) {
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return "$hash->{displayurl}: malformed or unsupported URL";
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}
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my ($authstring,$user,$pwd,$port,$host);
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($hash->{protocol},$authstring,$user,$pwd,$host,$port,$hash->{path})
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= ($1,$2,$3,$4,$5,$6,$7);
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$hash->{host} = $host;
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if(defined($port)) {
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$port =~ s/^://;
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} else {
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$port = ($protocol eq "https" ? 443: 80);
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$port = ($hash->{protocol} eq "https" ? 443: 80);
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}
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$path= '/' unless defined($path);
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$hash->{path} = '/' unless defined($hash->{path});
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$hash->{addr} = "$hash->{protocol}://$host:$port";
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$hash->{auth} = encode_base64("$user:$pwd","") if($authstring);
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my $auth64;
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if(defined($authstring)) {
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$auth64 = encode_base64("$user:$pwd","");
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if($hash->{callback}) { # Nonblocking staff
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$hash->{conn} = IO::Socket::INET->new(Proto=>'tcp', Blocking=>0);
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if($hash->{conn}) {
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my $iaddr = inet_aton($host);
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if(!defined($iaddr)) {
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my @addr = gethostbyname($host); # This is still blocking
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return "gethostbyname $host failed" if(!$addr[0]);
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$iaddr = $addr[4];
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}
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my $ret = connect($hash->{conn}, sockaddr_in($port, $iaddr));
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if(!$ret) {
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if($!{EINPROGRESS} || int($!)==10035) { # Nonblocking connect
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$hash->{FD} = $hash->{conn}->fileno();
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$hash->{directWriteFn} = sub() {
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delete($hash->{FD});
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delete($hash->{directWriteFn});
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delete($selectlist{$hash});
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my $packed = getsockopt($hash->{conn}, SOL_SOCKET, SO_ERROR);
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my $errno = unpack("I",$packed);
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return $hash->{callback}($hash, "$host: ".strerror($errno), "")
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if($errno);
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return HttpUtils_Connect2($hash);
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};
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$hash->{NAME} = ""; # Delete might check it
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$selectlist{$hash} = $hash;
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InternalTimer(gettimeofday()+$hash->{timeout},
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"HttpUtils_ConnErr", $hash, 0);
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return undef;
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} else {
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return "connect: $!";
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}
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}
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}
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} else {
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$hash->{conn} = IO::Socket::INET->new(
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PeerAddr=>"$host:$port", Timeout=>$hash->{timeout});
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}
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return HttpUtils_Connect2($hash);
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}
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my $conn;
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my $errstr= "";
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if($protocol eq "https") {
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sub
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HttpUtils_Connect2($)
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{
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my ($hash) = @_;
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if($hash->{protocol} eq "https" && $hash->{conn}) {
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eval "use IO::Socket::SSL";
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if($@) {
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Log3 undef, $loglevel, $@;
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Log3 undef, $hash->{loglevel}, $@;
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} else {
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$conn = IO::Socket::SSL->new(PeerAddr=>"$host:$port", Timeout=>$timeout);
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$hash->{conn}->blocking(1);
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IO::Socket::SSL->start_SSL($hash->{conn}, Timeout=>$hash->{timeout})
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|| undef $hash->{conn};
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}
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} else {
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$conn = IO::Socket::INET->new(PeerAddr=>"$host:$port", Timeout=>$timeout);
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}
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$errstr= $@ if(!$conn);
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if(!$conn) {
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Log3 undef, $loglevel, "CustomGetFileFromURL $displayurl: ".
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"Can't connect to $protocol://$host:$port, $errstr";
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undef $conn;
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if(!$hash->{conn}) {
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undef $hash->{conn};
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return "$hash->{displayurl}: Can't connect to $hash->{addr}: $@";
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}
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$hash->{host} =~ s/:.*//;
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my $hdr = ($hash->{data} ? "POST" : "GET")." $hash->{path} HTTP/1.0\r\n";
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$hdr .= "Host: $hash->{host}\r\n";
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$hdr .= "Authorization: Basic $hash->{auth}\r\n" if(defined($hash->{auth}));
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$hdr .= $hash->{header}."\r\n" if(defined($hash->{header}));
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if(defined($hash->{data})) {
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$hdr .= "Content-Length: ".length($hash->{data})."\r\n";
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$hdr .= "Content-Type: application/x-www-form-urlencoded\r\n"
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if ($hdr !~ "Content-Type:");
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}
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$hdr .= "\r\n";
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syswrite $hash->{conn}, $hdr;
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syswrite $hash->{conn}, $hash->{data} if(defined($hash->{data}));
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shutdown $hash->{conn}, 1 if(!$hash->{noshutdown});
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if($hash->{callback}) { # Nonblocking read
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$hash->{FD} = $hash->{conn}->fileno();
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$hash->{buf} = "";
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$hash->{directReadFn} = sub() {
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my $buf;
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my $len = sysread($hash->{conn},$buf,65536);
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if(!defined($len) || $len <= 0) { # EOF
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delete($hash->{FD});
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delete($hash->{directReadFn});
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delete($selectlist{$hash});
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my ($err, $ret, $redirect) = HttpUtils_ParseAnswer($hash, $hash->{buf});
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$hash->{callback}($hash, $err, $ret) if(!$redirect);
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return;
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}
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$hash->{buf} .= $buf;
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};
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$selectlist{$hash} = $hash;
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InternalTimer(gettimeofday()+$hash->{timeout},
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"HttpUtils_ReadErr", $hash, 0);
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return undef;
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}
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$host =~ s/:.*//;
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my $hdr = ($data ? "POST" : "GET")." $path HTTP/1.0\r\nHost: $host\r\n";
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if(defined($authstring)) {
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$hdr .= "Authorization: Basic $auth64\r\n";
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}
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if(defined($data)) {
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$hdr .= "Content-Length: ".length($data)."\r\n";
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$hdr .= "Content-Type: application/x-www-form-urlencoded";
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}
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$hdr .= "\r\n\r\n";
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syswrite $conn, $hdr;
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syswrite $conn, $data if(defined($data));
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shutdown $conn, 1 if(!$noshutdown);
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return undef;
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}
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my ($buf, $ret) = ("", "");
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$conn->timeout($timeout);
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for(;;) {
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my ($rout, $rin) = ('', '');
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vec($rin, $conn->fileno(), 1) = 1;
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my $nfound = select($rout=$rin, undef, undef, $timeout);
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if($nfound <= 0) {
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: Select timeout/error: $!";
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undef $conn;
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return undef;
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}
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sub
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HttpUtils_ParseAnswer($$)
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{
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my ($hash, $ret) = @_;
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my $len = sysread($conn,$buf,65536);
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last if(!defined($len) || $len <= 0);
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$ret .= $buf;
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$hash->{conn}->close();
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undef $hash->{conn};
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if(!$ret) {
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return ("$hash->{displayurl}: empty answer received", "");
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}
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$ret=~ s/(.*?)\r\n\r\n//s; # Not greedy: switch off the header.
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@ -149,44 +229,114 @@ CustomGetFileFromURL($$@)
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my $code= $header0[1];
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if(!defined($code) || $code eq "") {
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: empty answer received";
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return undef;
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return ("$hash->{displayurl}: empty answer received", "");
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}
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: HTTP Response code $code";
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Log3 undef,$hash->{loglevel}, "$hash->{displayurl}: HTTP response code $code";
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if($code == 301 || $code == 302 || $code == 303) { # redirect
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if(++$redirects > 5) {
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: Too many redirects";
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if($code==301 || $code==302 || $code==303) { # redirect
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if(++$hash->{redirects} > 5) {
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return ("$hash->{displayurl}: Too many redirects", "");
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} else {
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map { $url=$1 if($_ =~ m/Location:\s*(\S+)$/) } @header;
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Log3 undef, $loglevel, "CustomGetFileFromURL $displayurl: ".
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"Redirect to ".($quiet ? "<hidden>" : $url);
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goto RETRY;
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my $ra;
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map { $ra=$1 if($_ =~ m/Location:\s*(\S+)$/) } @header;
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$hash->{url} = ($ra =~ m/^http/) ? $ra: $hash->{addr}.$ra;
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Log3 undef, $hash->{loglevel}, "HttpUtils $hash->{displayurl}: ".
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"Redirect to ".($hash->{hideurl} ? "<hidden>" : $hash->{url});
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if($hash->{callback}) {
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HttpUtils_NonblockingGet($hash);
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return ("", "", 1);
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} else {
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return HttpUtils_BlockingGet($hash);
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}
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}
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}
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my $hostpath= $quiet ? "<hidden>" : $host . $path;
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: Got data, length: ".length($ret);
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# Debug
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Log3 undef, $hash->{loglevel},
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"HttpUtils $hash->{displayurl}: Got data, length: ". length($ret);
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if(!length($ret)) {
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Log3 undef, $loglevel,
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"CustomGetFileFromURL $displayurl: Zero length data, header follows...";
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Log3 undef, $hash->{loglevel}, "HttpUtils $hash->{displayurl}: ".
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"Zero length data, header follows:";
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for (@header) {
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Log3 undef, $loglevel, "CustomGetFileFromURL $displayurl: $_";
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Log3 undef, $hash->{loglevel}, " $_";
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}
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}
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undef $conn;
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return ("", $ret);
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}
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# Parameters in the hash:
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# mandatory:
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# url, callback
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# optional(default):
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# hideurl(0),timeout(4),data(""),noshutdown(0),loglevel(4),header("")
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# Example:
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# HttpUtils_NonblockingGet({
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# url=>"http://192.168.178.112:8888/fhem",
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# myParam=>7,
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# callback=>sub($$$){ Log 1,"$_[0]->{myParam} ERR:$_[1] DATA:$_[2]" }
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# })
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sub
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HttpUtils_NonblockingGet($)
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{
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my ($hash) = @_;
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my $err = HttpUtils_Connect($hash);
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$hash->{callback}($hash, $err, "") if($err);
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}
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#################
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# Parameters same as HttpUtils_NonblockingGet up to callback
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# Returns (err,data)
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sub
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HttpUtils_BlockingGet($)
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{
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my ($hash) = @_;
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my $err = HttpUtils_Connect($hash);
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return ($err, undef) if($err);
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my ($buf, $ret) = ("", "");
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$hash->{conn}->timeout($hash->{timeout});
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for(;;) {
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my ($rout, $rin) = ('', '');
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vec($rin, $hash->{conn}->fileno(), 1) = 1;
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my $nfound = select($rout=$rin, undef, undef, $hash->{timeout});
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if($nfound <= 0) {
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undef $hash->{conn};
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return ("$hash->{displayurl}: Select timeout/error: $!", undef);
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}
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my $len = sysread($hash->{conn},$buf,65536);
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last if(!defined($len) || $len <= 0);
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$ret .= $buf;
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}
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return HttpUtils_ParseAnswer($hash, $ret);
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}
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# Deprecated, use GetFileFromURL/GetFileFromURLQuiet
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sub
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CustomGetFileFromURL($$@)
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{
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my ($hideurl, $url, $timeout, $data, $noshutdown, $loglevel) = @_;
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my $hash = { hideurl => $hideurl,
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url => $url,
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timeout => $timeout,
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data => $data,
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noshutdown=> $noshutdown,
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loglevel => $loglevel,
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};
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my ($err, $ret) = HttpUtils_BlockingGet($hash);
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if($err) {
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Log3 undef, $hash->{loglevel}, "CustomGetFileFromURL $err";
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return undef;
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}
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return $ret;
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}
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##################
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# Compatibility mode
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# Parameter: $url, $timeout, $data, $noshutdown, $loglevel
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# - if data (which is urlEncoded) is set, then a POST is performed, else a GET.
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# - noshutdown must be set e.g. if calling the Fritz!Box Webserver
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sub
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GetFileFromURL($@)
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{
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@ -194,6 +344,8 @@ GetFileFromURL($@)
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return CustomGetFileFromURL(0, $url, @a);
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}
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##################
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# Same as GetFileFromURL, but the url is not displayed in the log.
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sub
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GetFileFromURLQuiet($@)
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{
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@ -208,5 +360,4 @@ GetHttpFile($$)
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return GetFileFromURL("http://$host$file");
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}
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1;
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