mimetype.cpp

mini http server,可以集成嵌入到程序中,实现简单的web功能

/*____________________________________________________________________________*\
 *

 Copyright (c) 1997-2003 John Roy, Holger Zimmermann. All rights reserved.

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    notice, this list of conditions and the following disclaimer. 

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    notice, this list of conditions and the following disclaimer in
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 3. The name of the author may not be used to endorse or promote products
    derived from this software without specific prior written permission.

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 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 *____________________________________________________________________________*|
 *
 * $Source: /cvsroot/pi3web/Pi3Web_200/Source/HTTP/MIMEType.cpp,v $
 * $Date: 2003/05/13 18:42:03 $
 *
 Description:
	Handler to set the MIME type.
\*____________________________________________________________________________*/
//$SourceTop:$

#include "HandBase.h"
#include "HTTPCore.h"
#include "PIStrStr.h"

/*____________________________________________________________________________*\
 *
 Description:
\*____________________________________________________________________________*/
#if 0
	/*
	** HTML documentation for this handler
	*/
/*___+++HTMLDOC_BEGIN+++___*/
Name:
	MIMETypeByExtension

Description:
	Set the MIME Type of the resource identified by the current physical
	path by using the function HTTPCore_getMIMETypeFromExtension().
	<P>
	This looks up the MIME type using the file extension component of the
	physical path in the list of MIME types loaded into the server.

<!--
no options

Options:
<H5>Overview</H5>
<TABLE BORDER=1>
<TH>Option
<TH>Default
<TH>Values
<TH>Short Description
<TH>Example(s)

<TR>
<TD>RequirePermissions
<TD>-
<TD>Combination of 'X', 'R', 'X'
<TD>Permissions required on file
<TD>RequirePermissions="X"

</TABLE>
<STRONG>-</STRONG> in the <IT>default</IT> indicates no default<BR>
<STRONG>+</STRONG> in the <IT>default</IT> indicates the field is mandatory<BR>

<H4>Description of Options</H4>
<H5>
	Require Permissions
</H5>
These permissions will be compared against the permissions on the filesystem
resource to determine if this handler will indicate a match by returning
PIAPI_COMPLETED.
This value is obtained by concatenating any of the following flags together.
<CENTER>
<TABLE BORDER=1>
<TH>Option
<TH>Meaning
<TR>
<TD>R
<TD>Resource must be readable
<TR>
<TD>W
<TD>Resource must be writable
<TR>
<TD>X
<TD>Resource must be executable
</TABLE>
</CENTER>
Permission flags are not case sensitive.

-->

Phase:
	CHECKTYPE

Returns:
	PIAPI_CONTINUE in all cases.

Example:
	<PRE>
	&lt;Object&gt;
		Name MIMETypeByExtension
		Class MIMETypeByExtensionClass
	&lt;/Object&gt;

	&lt;Object&gt;
		...
		CheckType MIMETypeByExtension
		...
	&lt;/Object&gt;
	</PRE>
/*___+++HTMLDOC_END+++___*/
#endif

/*____________________________________________________________________________*\
 *
 Class:
 Description:
\*____________________________________________________________________________*/
class MIMETypeByExtension : public HandlerBaseHTTP
{
private:
	/* ---
	Configuration data
	--- */

protected:
	int Parameter( const char *pVariable, const char *pValue,
		const char *pWhere )
		{
		assert( pVariable && pValue );
		PIOStrStream os;
		os << pWhere << "MIMETypeByExtension: ";
/*	No parameters */
/*		if ( !PIUtil_stricmp( KEY_CONF_DEFAULTMIME, pVariable ) ) */
		if ( 0 )
			{
			}
		else
			{
			os << "Undefined parameter '" << pVariable << "'" << ends;
			CONFIG_ERR( Object(), os.str() );
			return 0;
			};

		return 1;
		};

public:
	MIMETypeByExtension( PIObject *pObject, int iArgc, const char *ppArgv[] )
	:	HandlerBaseHTTP( pObject )
		{
		ReadParameters( iArgc, ppArgv );
		};

	~MIMETypeByExtension()
		{
		};

	int Handle( int iPhase, PIHTTP &tPIHTTP, PIIOBuffer & )
		{
		if ( iPhase!=PH_CHECKTYPE )
			{ return PIAPI_ERROR; };

		const char *pPath = (const char *)PIDB_lookup( tPIHTTP.pResponseDB,
			PIDBTYPE_STRING, KEY_INT_PATH, 0 );
		PIFInfo *pFInfo = HTTPCore_getCachedFile( pPath );
		const char *pExtension = PIFInfo_getExtension( pFInfo );
		if ( pExtension )
			{
			const char *pMime=HTTPCore_getMIMETypeFromExtension( pExtension );
			PIDB_replace( tPIHTTP.pResponseDB, PIDBTYPE_RFC822,
				KEY_HTTP_CONTENTTYPE, (void *)pMime, 0 );
			HTTPCore_releaseCachedFile( pFInfo );
			return PIAPI_CONTINUE;
			};
		HTTPCore_releaseCachedFile( pFInfo );
		return PIAPI_CONTINUE;
		};
};

/*____________________________________________________________________________*\
 *
 Function:
 Synopsis:
 Description:
\*____________________________________________________________________________*/
PUBLIC_PIAPI int MIMETypeByExtension_constructor( PIObject *pObj,
	int iArgc, const char *ppArgv[] )
{
	return HandlerBaseHTTP_constructor( pObj, PI_NEW( MIMETypeByExtension( pObj,
		iArgc, ppArgv ) ) );
}

#if 0
/*___+++CNF_BEGIN+++___*/
	<Class>
		Name MIMETypeByExtensionClass
		Type LogicExtension
		Library HTTP
		OnClassLoad HandlerBaseHTTP_onClassLoad
		Constructor MIMETypeByExtension_constructor
		CopyConstructor HandlerBaseHTTP_copyConstructor
		Destructor HandlerBaseHTTP_destructor
		Execute HandlerBaseHTTP_execute
	</Class>

	<Object>
		Name MIMETypeByExtension
		Class MIMETypeByExtensionClass
	</Object>

/*___+++CNF_END+++___*/
#endif