/*
 * http-request-analyze.c -- HTTPのrequest lineを解析する(枠組みだけ、2026)
 * ~yas/syspro/ipc/http-request-analyze.c
 */

#include "coins-syspro.c"

extern int  http_receive_request( FILE *in, char *filename, size_t size );

#define	BUFFERSIZE	1024

int
main( int argc, char *argv[] )
{
	char filename[BUFFERSIZE];
	int res;

	if( argc != 1 ) {
		fprintf(stderr,"Usage: %s < request-filename\n",argv[0] );
		exit( 1 );
	}
	res = http_receive_request( stdin, filename, BUFFERSIZE );
	if( res )
	    printf("filename is [%s].\n", filename );
	else
	    printf("Bad request.\n");
}

int
http_receive_request( FILE *in, char *filename, size_t size ) /* 2026 */
{
	/* 後で課題(705)に回答する人はこの関数をそのまま利用しなさい。 */
    	/* 内容を変更しなさい。*/
	char requestline[BUFFERSIZE] ;
	char rheader[BUFFERSIZE] ;
	
	snprintf( filename, size, "NOFILENAME");
	if( fgets(requestline,BUFFERSIZE,in) <= 0 )
	{
		printf("No request line.\n");
		return( 0 );
	}
	chomp( requestline ); /* remove \r\n */
	printf("requestline is [%s]\n",requestline );
	while( fgets(rheader,BUFFERSIZE,in) )
	{
		chomp( rheader ); /* remove \r\n */
		if( strcmp(rheader,"") == 0 )
			break;
		printf("Ignored: %s\n",rheader );
	}
	if( strchr(requestline,'<') ||
	    strstr(requestline,"..") )
	{
		printf("Dangerous request line found.\n");
		return( 0 );
	}
	snprintf( filename, size, "%s", "change this." );
	return( 1 );
}