httpd/httpd/src/http/http.h

#ifndef HTTP_H
#define HTTP_H

#include "../utils/string/string.h"

// === Enums

enum http_method
{
    GET,
    POST,
    PUT,
    DELETE,
    // PATCH,
    // HEAD,
    // OPTIONS,
    // CONNECT,
    // TRACE
};

// === Structures

struct http_header
{
    struct string *field;
    struct string *value;
    struct http_header *next;
};

struct http_request
{
    enum http_method method;    
    struct string *path;
    struct string *protocol;
    struct string *protocol_version;
    struct http_header *headers; // Headers linked list
};

struct http_response
{
    struct string *protocol;
    struct string *protocol_version;
    int status_code;
    struct string *status_msg;
    struct http_header *headers; // Headers linked list
};

// === Functions

/* @brief Parses the HTTP request and splits it into a request structure
 *
 * @params req
 *
 * @return A pointer to the structure containing the request infos on success,
 *         NULL otherwise
 */
 struct http_request* parse_request(struct string* req);

/* @brief Generates a response to the given request
 *
 * @params req
 *
 * @return A pointer to the generated response struct on success,
 *         NULL otherwise
 */
 struct http_response* generate_response(struct http_request* req);

/* @brief Formats the given response structure into a valid HTTP response
 *        string
 *
 * @params resp
 *
 * @return A pointer to the string containing the response on success,
 *         NULL otherwise
 */
 struct string* format_response(struct http_response* resp);


#endif // ! HTTP_H