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program testcgiapp;
{$mode objfpc}{$H+}
uses
Classes, SysUtils, CustApp, inifiles, process, httpdefs,custcgi
{ you can add units after this };
type
{ TTestCGIApplication }
TTestCGIApplication = class(TCustomApplication)
private
FCGB: String;
FCGIE: TStrings;
FCGV: TStrings;
FMethod: String;
Foutput: String;
FPostData: String;
FPathInfo : String;
FScriptName: String;
FURL: String;
procedure CheckEnvironment;
procedure CheckMethod;
procedure ProcessConfig;
procedure RunCGI;
protected
Property CGIEnvironment : TStrings Read FCGIE Write FCGIE;
Property URL : String Read FURL Write FURL;
Property PostData : String Read FPostData Write FPostData;
Property Method : String Read FMethod Write FMethod;
Property CGIOutput : String Read Foutput Write FOutput;
Property CGIBinary : String Read FCGB Write FCGB;
Property CGIVariables : TStrings Read FCGV Write FCGV;
Property PathInfo : String Read FPathInfo Write FPathInfo;
Property ScriptName : String Read FScriptName Write FScriptName;
procedure DoRun; override;
public
constructor Create(TheOwner: TComponent); override;
Destructor Destroy; override;
procedure WriteHelp; virtual;
end;
{ TTestCGIApplication }
Resourcestring
SErrUnsupportedMethod = 'Unsupported method: "%s"';
SErrNoCGIBinary = 'No CGI binary specified';
Const
SConfig = 'Config';
KeyURL = 'URL';
KeyEnvironment = 'Environment';
KeyMethod = 'Method';
KeyPost = 'PostData';
SEnvironment = KeyEnvironment;
SVariables = 'Variables';
procedure TTestCGIApplication.ProcessConfig;
Var
Ini : TInifile;
S : String;
begin
Ini:=TIniFile.Create(GetOptionValue('c','config'));
try
With Ini do
begin
URL:=ReadString(SConfig,KeyURL,'');
S:=ReadString(SConfig,KeyEnvironment,'');
If (S<>'') and FileExists(S) then
CGIEnvironment.LoadFromFile(S);
If SectionExists(SEnvironment) then
ReadSectionValues(SEnvironment,CGIEnvironment);
If SectionExists(SVariables) then
ReadSectionValues(SVariables,CGIVariables);
If (Method='') then
Method:=ReadString(SConfig,KeyMethod,'GET');
PostData:=ReadString(SConfig,KeyPost,'');
end;
finally
Ini.Free;
end;
end;
procedure TTestCGIApplication.RunCGI;
Var
Proc : TProcess;
begin
If (CGIBinary='') then
Raise Exception.Create(SerrNoCGIBinary);
Proc:=TProcess.Create(Self);
try
Proc.CommandLine:=CGIBinary;
Proc.Environment:=CGIEnvironment;
Proc.Execute;
finally
Proc.Free;
end;
end;
procedure TTestCGIApplication.CheckMethod;
begin
If (Method='') then
Method:='GET'
else
begin
Method:=Uppercase(Method);
If (Method<>'POST') and (Method<>'GET') then
Raise Exception.CreateFmt(SerrUnsupportedMethod,['METHOD']);
end;
end;
(*
({ 1: 'AUTH_TYPE' } fieldWWWAuthenticate, // ?
{ 2: 'CONTENT_LENGTH' } FieldContentLength,
{ 3: 'CONTENT_TYPE' } FieldContentType,
{ 4: 'GATEWAY_INTERFACE' } '',
{ 5: 'PATH_INFO' } '',
{ 6: 'PATH_TRANSLATED' } '',
{ 7: 'QUERY_STRING' } '',
{ 8: 'REMOTE_ADDR' } '',
{ 9: 'REMOTE_HOST' } '',
{ 10: 'REMOTE_IDENT' } '',
{ 11: 'REMOTE_USER' } '',
{ 12: 'REQUEST_METHOD' } '',
{ 13: 'SCRIPT_NAME' } '',
{ 14: 'SERVER_NAME' } '',
{ 15: 'SERVER_PORT' } '',
{ 16: 'SERVER_PROTOCOL' } '',
{ 17: 'SERVER_SOFTWARE' } '',
{ 18: 'HTTP_ACCEPT' } FieldAccept,
{ 19: 'HTTP_ACCEPT_CHARSET' } FieldAcceptCharset,
{ 20: 'HTTP_ACCEPT_ENCODING' } FieldAcceptEncoding,
{ 21: 'HTTP_IF_MODIFIED_SINCE' } FieldIfModifiedSince,
{ 22: 'HTTP_REFERER' } FieldReferer,
{ 23: 'HTTP_USER_AGENT' } FieldUserAgent,
{ 24: 'HTTP_COOKIE' } FieldCookie,
// Additional Apache vars
{ 25: 'HTTP_CONNECTION' } FieldConnection,
{ 26: 'HTTP_ACCEPT_LANGUAGE' } FieldAcceptLanguage,
{ 27: 'HTTP_HOST' } '',
{ 28: 'SERVER_SIGNATURE' } '',
{ 29: 'SERVER_ADDR' } '',
{ 30: 'DOCUMENT_ROOT' } '',
{ 31: 'SERVER_ADMIN' } '',
{ 32: 'SCRIPT_FILENAME' } '',
{ 33: 'REMOTE_PORT' } '',
{ 34: 'REQUEST_URI' } '',
{ 35: 'CONTENT' } '',
{ 36: 'XHTTPREQUESTEDWITH' } ''
*)
procedure TTestCGIApplication.CheckEnvironment;
Var
L : TStrings;
S,N,V : String;
I : Integer;
begin
L:=CGIEnvironment;
If L.IndexOfName('REQUEST_METHOD')=-1 then
L.Values['REQUEST_METHOD']:=Method;
S:=ScriptName;
If (S='') then
S:=CGIBinary;
If L.IndexOfName('SCRIPT_NAME')=-1 then
L.Values['SCRIPT_NAME']:=S;
If L.IndexOfName('SCRIPT_FILENAME')=-1 then
L.Values['SCRIPT_FILENAME']:=S;
If (PathInfo<>'') then
L.Values['PATH_INFO']:=PathInfo;
If (Method='GET') then
begin
If L.IndexOfName('QUERY_STRING')=-1 then
begin
S:='';
If (CGIVariables.Count>0) then
For I:=0 to CGIVariables.Count-1 do
begin
CGIVariables.GetNameValue(I,N,V);
If (S<>'') then
S:=S+'&';
S:=S+N+'='+HTTPEncode(V);
end;
L.Add('QUERY_STRING='+S)
end;
end
end;
procedure TTestCGIApplication.DoRun;
var
ErrorMsg: String;
begin
// parse parameters
if HasOption('h','help') then begin
WriteHelp;
Terminate;
Exit;
end;
if HasOption('c','config') then
ProcessConfig;
If HasOption('u','url') then
URL:=GetOptionValue('u','url');
If HasOption('e','environment') then
CGIEnvironment.LoadFromFile(GetOptionValue('e','environment'));
If HasOption('o','output') then
CGIOutput:=GetOptionValue('o','output');
If HasOption('m','method') then
Method:=GetOptionValue('m','method');
If HasOption('p','pathinfo') then
PathInfo:=GetOptionValue('p','pathinfo');
If HasOption('s','scriptname') then
ScriptName:=GetOptionValue('s','scriptname');
If HasOption('r','variables') then
CGIOutput:=GetOptionValue('v','variables');
If HasOption('i','input') then
CGIBinary:=GetOptionValue('i','input');
CheckMethod;
CheckEnvironment;
RunCGI;
{ add your program here }
// stop program loop
Terminate;
end;
constructor TTestCGIApplication.Create(TheOwner: TComponent);
begin
inherited Create(TheOwner);
StopOnException:=True;
FCGIE:=TStringList.Create;
FCGV:=TStringList.Create;
end;
destructor TTestCGIApplication.Destroy;
begin
FreeAndNil(FCGIE);
FreeAndNil(FCGV);
inherited Destroy;
end;
procedure TTestCGIApplication.WriteHelp;
begin
Writeln('Usage: ',ExeName,' [options]');
Writeln('Where options is one of : ');
Writeln(' -h this help');
Writeln(' -c|--config=file use file for configuration');
Writeln(' -e|--environment=file use file for CGI environment (overrides config).');
Writeln(' -i|--input=file use file as CGI binary.');
Writeln(' -m|--method=method use method to invoke CGI (overrides config, default is GET).');
Writeln(' -o|--output=file use file for CGI output (overrides config).');
Writeln(' -p|--pathinfo=path use path for PATH_INFO environment variable (overrides config).');
Writeln(' -r|--variables=file read query variables from file (overrides config).');
Writeln(' -u|--url=URL use URL as the URL (overrides config).');
end;
var
Application: TTestCGIApplication;
begin
Application:=TTestCGIApplication.Create(nil);
Application.Title:='Test CGI application';
Application.Run;
Application.Free;
end.
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