?? writecookie.cpp
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// Fig. 19.16: writecookie.cpp
// Program to write a cookie to a client's machine.
#include <iostream>
using std::cin;
using std::cout;
#include <string>
using std::string;
#include <cstdlib>
using std::getenv;
using std::atoi;
int main()
{
char query[ 1024 ] = "";
string dataString = "";
string nameString = "";
string ageString = "";
string colorString = "";
int contentLength = 0;
// expiration date of cookie
string expires = "Friday, 14-MAY-10 16:00:00 GMT";
// data was entered
if ( getenv( "CONTENT_LENGTH" ) )
{
contentLength = atoi( getenv( "CONTENT_LENGTH" ) );
cin.read( query, contentLength ); // read data from standard input
dataString = query;
// search string for data and store locations
int nameLocation = dataString.find( "name=" ) + 5;
int endName = dataString.find( "&" );
int ageLocation = dataString.find( "age=" ) + 4;
int endAge = dataString.find( "&color" );
int colorLocation = dataString.find( "color=" ) + 6;
int endColor = dataString.find( "&button" );
// get value for user's name
nameString = dataString.substr(
nameLocation, endName - nameLocation );
if ( ageLocation > 0 ) // get value for user's age
ageString = dataString.substr(
ageLocation, endAge - ageLocation );
if ( colorLocation > 0 ) // get value for user's favorite color
colorString = dataString.substr(
colorLocation, endColor - colorLocation );
// set cookie
cout << "Set-Cookie: Name=" << nameString << "age:"
<< ageString << "color:" << colorString
<< "; expires=" << expires << "; path=\n";
} // end if
cout << "Content-Type: text/html\n\n"; // output HTTP header
// output XML declaration and DOCTYPE
cout << "<?xml version = \"1.0\"?>"
<< "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" "
<< "\"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">";
// output html element and some of its contents
cout << "<html xmlns = \"http://www.w3.org/1999/xhtml\">"
<< "<head><title>Cookie Saved</title></head><body>";
// output user's information
cout << "<p>A cookie has been set with the following"
<< " data:</p><p>Name: " << nameString << "<br/></p>"
<< "<p>Age: " << ageString << "<br/></p>"
<< "<p>Color: " << colorString << "<br/></p>"
<< "<p>Click <a href=\"/cgi-bin/readcookie.cgi\">"
<< "here</a> to read saved cookie data.</p></body></html>";
return 0;
} // end main
/**************************************************************************
* (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
* Pearson Education, Inc. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
**************************************************************************/
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