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#ifndef __KINGATE_CGI_GATEWAY_H
#define __KINGATE_CGI_GATEWAY_H
#include <map>
#include "kingate/cgi_interface.h"
/**
* @file
* @brief the cgi_gateway -- main interface to CGI.
*/
namespace kingate {
using namespace std;
/**
* The main class interfacing with the CGI environment.
*/
class cgi_gateway {
public:
/**
* The interface to CGI environment (e.g. fastcgi).
*/
cgi_interface& iface;
/**
* The type describing map holding parameters parsed from query string or input.
*/
typedef multimap<string,string> params_t;
/**
* The GET-passed parameters.
*/
params_t get;
/**
* The POST-passed parameters.
*/
params_t post;
/**
* Was the stdin content parsed?
*/
bool b_parsed_content;
/**
* @param ci the interface to use.
*/
cgi_gateway(cgi_interface& ci);
/**
* Check whether there is an 'environment' meta-variable with specific name
* passed to CGI.
* @param n variable name.
* @return true if yes.
* @see cgi_interface::has_meta()
* @see get_meta()
*/
bool has_meta(const string& n) const { return iface.has_meta(n); }
/**
* Retrieve the 'environment' meta-variable value.
* @param n variable name.
* @return variable contents.
* @see exception_notfound
* @see cgi_interface::get_meta()
*/
string get_meta(const string& n) const { return iface.get_meta(n); }
/**
* fetch reference to the 'stdin' stream.
* @return the reference to the corresponding istream object.
* @see cgi_interface::in()
*/
istream& in() { return iface.in(); }
/**
* fetch reference to the 'stdout' stream.
* @return the reference to the corresponding ostream object.
* @see cgi_interface::out()
*/
ostream& out() { return iface.out(); }
/**
* fetch reference to the 'stderr' stream.
* @return the reference to the corresponding ostream object.
* @see cgi_interface::err()
*/
ostream& err() { return iface.err(); }
/**
* cast to the ostream -- fetches the reference to the 'stdout'
* stream.
* @see out()
*/
operator ostream& (void) { return out(); }
/**
* Check to see whether the parameter was passed via GET.
* @param n the parameter name.
* @return true if yes.
*/
bool has_GET(const string& n) const;
/**
* Retrieve the parameter passed via GET.
* @param n the parameter name.
* @return the parameter contents.
* @see exception_notfound
*/
string get_GET(const string& n) const;
/**
* Check to see whether the parameter was passed via POST.
* @param n the parameter name.
* @return true if yes.
*/
bool has_POST(const string& n) const;
/**
* Retrieve the POST-parameter.
* @param n the parameter name.
* @return the parameter contents.
* @see exception_notfound
*/
string get_POST(const string& n) const;
/**
* Check to see whether the parameter was passed either via POST or
* GET.
* @param n the parameter name.
* @return true if yes.
*/
bool has_param(const string& n) const;
/**
* Retrieve the parameter passed either via POST or GET
* (GET-parameter takes precedence).
* @param n the parameter name.
* @return true if yes.
* @see exception_notfound.
*/
string get_param(const string& n) const;
/**
* Retrieve the POST content-type (as passed via CONTENT_TYPE
* environment variable).
* @return the content type.
*/
const string& get_content_type() const;
/**
* Retrieve the POST content length (as passed via the
* CONTENT_LENGTH environment variable).
* @return the content length.
*/
unsigned long get_content_length() const;
/**
* Check to see whether the content from stdin stream was parsed.
* @return true if yes.
*/
bool is_content_parsed() const { return b_parsed_content; }
private:
/**
* Parse the query string, putting the parameters into the map
* specified.
* @param q the query string.
* @param p destination parameters map.
*/
static void parse_query(string& q,params_t& p);
};
}
#endif /* __KINGATE_CGI_GATEWAY_H */
/*
* vim:set ft=cpp:
*/
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