120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
#ifndef CWS_SERVER_H
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#define CWS_SERVER_H
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#include <netdb.h>
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#include <signal.h>
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#include <sys/socket.h>
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#include <time.h>
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#include "myclib/hashmap/myhashmap.h"
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#include "utils/config.h"
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/* Clients max queue */
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#define CWS_SERVER_BACKLOG 128
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/* Size of the epoll_event array */
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#define CWS_SERVER_EPOLL_MAXEVENTS 64
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#define CWS_SERVER_EPOLL_TIMEOUT 3000
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#define CWS_SERVER_MAX_REQUEST_SIZE (16 * 1024) /* 16KB */
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/* Main server loop */
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extern volatile sig_atomic_t cws_server_run;
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typedef enum cws_server_ret_t {
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CWS_SERVER_OK,
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CWS_SERVER_CONFIG,
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CWS_SERVER_FD_ERROR,
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CWS_SERVER_CLIENT_NOT_FOUND,
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CWS_SERVER_CLIENT_DISCONNECTED,
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CWS_SERVER_CLIENT_DISCONNECTED_ERROR,
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CWS_SERVER_HTTP_PARSE_ERROR,
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CWS_SERVER_GETADDRINFO_ERROR,
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CWS_SERVER_SOCKET_ERROR,
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CWS_SERVER_SETSOCKOPT_ERROR,
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CWS_SERVER_BIND_ERROR,
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CWS_SERVER_LISTEN_ERROR,
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CWS_SERVER_EPOLL_ADD_ERROR,
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CWS_SERVER_EPOLL_DEL_ERROR,
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CWS_SERVER_FD_NONBLOCKING_ERROR,
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CWS_SERVER_ACCEPT_CLIENT_ERROR,
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CWS_SERVER_HASHMAP_INIT,
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CWS_SERVER_MALLOC_ERROR,
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CWS_SERVER_REQUEST_TOO_LARGE,
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} cws_server_ret;
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typedef struct cws_client_t {
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struct sockaddr_storage addr;
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time_t last_activity;
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} cws_client;
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/**
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* @brief Setups hints object
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*
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* @param[out] hints The hints addrinfo
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* @param[in] hostname The hostname (could be NULL)
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*/
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void cws_server_setup_hints(struct addrinfo *hints, const char *hostname);
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/**
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* @brief Runs the server
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*
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* @param[in] config The server's config
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*/
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cws_server_ret cws_server_start(cws_config *config);
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/**
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* @brief Main server loop
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*
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* @param[in,out] sockfd Socket of the commincation endpoint
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*/
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cws_server_ret cws_server_loop(int sockfd, cws_config *config);
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/**
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* @brief Adds a file descriptor to the interest list
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*
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* @param[in] epfd epoll file descriptor
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* @param[in] sockfd The file descriptor to watch
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* @param[in] events The events to follow
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*/
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cws_server_ret cws_epoll_add(int epfd, int sockfd, uint32_t events);
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/**
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* @brief Removes a file descriptor from the interest list
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*
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* @param[in] epfd epoll file descriptor
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* @param[in] sockfd The file descriptor to remove
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*/
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cws_server_ret cws_epoll_del(int epfd, int sockfd);
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/**
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* @brief Makes a file descriptor non-blocking
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*
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* @param[in] sockfd The file descriptor to make non-blocking
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*/
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cws_server_ret cws_fd_set_nonblocking(int sockfd);
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/**
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* @brief Handles the new client
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*
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* @param[in] sockfd Server's file descriptor
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* @param[out] their_sa Populates the struct with client's information
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* @param[in] theirsa_size Size of the struct
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*/
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int cws_server_accept_client(int sockfd, struct sockaddr_storage *their_sa, socklen_t *theirsa_size);
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/**
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* @brief Disconnect a client
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*
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* @param[in] epfd Epoll file descriptor
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* @param[in] client_fd Client file descriptor
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* @param[in] hashmap Clients hash map
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*/
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void cws_server_close_client(int epfd, int client_fd, mcl_hashmap *hashmap);
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cws_server_ret cws_server_handle_new_client(int sockfd, int epfd, mcl_hashmap *clients);
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cws_server_ret cws_server_handle_client_data(int client_fd, int epfd, mcl_hashmap *clients, cws_config *config);
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#endif
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