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/*
Copyright (C) 2013 Andrey Uzunov
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file structures.h
* @author Andrey Uzunov
*/
#ifndef STRUCTURES_H
#define STRUCTURES_H
#define _GNU_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <microhttpd.h>
#include <signal.h>
#include <poll.h>
#include <fcntl.h>
#include <regex.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <spdylay/spdylay.h>
#include <getopt.h>
struct Proxy;
struct SPDY_Connection {
SSL *ssl;
//SSL_CTX *ssl_ctx;
spdylay_session *session;
struct SPDY_Connection *prev;
struct SPDY_Connection *next;
struct Proxy *proxies_head;
struct Proxy *proxies_tail;
char *host;
/* WANT_READ if SSL connection needs more input; or WANT_WRITE if it
needs more output; or IO_NONE. This is necessary because SSL/TLS
re-negotiation is possible at any time. Spdylay API offers
similar functions like spdylay_session_want_read() and
spdylay_session_want_write() but they do not take into account
SSL connection. */
int fd;
int want_io;
uint counter;
uint streams_opened;
bool is_tls;
};
struct URI
{
char * full_uri;
char * scheme;
char * host_and_port;
//char * host_and_port_for_connecting;
char * host;
char * path;
char * path_and_more;
char * query;
char * fragment;
uint16_t port;
};
struct HTTP_URI;
struct Proxy
{
struct MHD_Connection *http_connection;
struct MHD_Response *http_response;
struct URI *uri;
struct HTTP_URI *http_uri; //TODO remove me
struct SPDY_Connection *spdy_connection;
struct Proxy *next;
struct Proxy *prev;
//char *path;
char *url;
//struct SPDY_Request *request;
//struct SPDY_Response *response;
//CURL *curl_handle;
//struct curl_slist *curl_headers;
//struct SPDY_NameValue *headers;
char *version;
//char *status_msg;
void *http_body;
size_t http_body_size;
ssize_t length;
int status;
int id;
bool done;
bool http_active;
bool spdy_active;
};
struct HTTP_URI
{
char * uri;
struct Proxy * proxy;
};
struct SPDY_Headers
{
const char **nv;
int num;
int cnt;
};
struct global_options
{
char *spdy2http_str;
struct SPDY_Connection *spdy_connection;
struct SPDY_Connection *spdy_connections_head;
struct SPDY_Connection *spdy_connections_tail;
int streams_opened;
int responses_pending;
regex_t uri_preg;
size_t global_memory;
SSL_CTX *ssl_ctx;
uint32_t total_spdy_connections;
uint16_t spdy_proto_version;
uint16_t listen_port;
bool verbose;
bool only_proxy;
bool spdy_data_received;
} glob_opt;
/*
#define SOCK_ADDR_IN_PTR(sa) ((struct sockaddr_in *)(sa))
#define SOCK_ADDR_IN_FAMILY(sa) SOCK_ADDR_IN_PTR(sa)->sin_family
#define SOCK_ADDR_IN_PORT(sa) SOCK_ADDR_IN_PTR(sa)->sin_port
#define SOCK_ADDR_IN_ADDR(sa) SOCK_ADDR_IN_PTR(sa)->sin_addr
#ifdef HAS_IPV6
#define SOCK_ADDR_IN6_PTR(sa) ((struct sockaddr_in6 *)(sa))
#define SOCK_ADDR_IN6_FAMILY(sa) SOCK_ADDR_IN6_PTR(sa)->sin6_family
#define SOCK_ADDR_IN6_PORT(sa) SOCK_ADDR_IN6_PTR(sa)->sin6_port
#define SOCK_ADDR_IN6_ADDR(sa) SOCK_ADDR_IN6_PTR(sa)->sin6_addr
#endif
*/
//forbidden headers
#define SPDY_HTTP_HEADER_TRANSFER_ENCODING "transfer-encoding"
#define SPDY_HTTP_HEADER_PROXY_CONNECTION "proxy-connection"
#define SPDY_HTTP_HEADER_KEEP_ALIVE "keep-alive"
#define SPDY_HTTP_HEADER_CONNECTION "connection"
#define MAX_SPDY_CONNECTIONS 100
/**
* Insert an element at the head of a DLL. Assumes that head, tail and
* element are structs with prev and next fields.
*
* @param head pointer to the head of the DLL (struct ? *)
* @param tail pointer to the tail of the DLL (struct ? *)
* @param element element to insert (struct ? *)
*/
#define DLL_insert(head,tail,element) do { \
(element)->next = (head); \
(element)->prev = NULL; \
if ((tail) == NULL) \
(tail) = element; \
else \
(head)->prev = element; \
(head) = (element); } while (0)
/**
* Remove an element from a DLL. Assumes
* that head, tail and element are structs
* with prev and next fields.
*
* @param head pointer to the head of the DLL (struct ? *)
* @param tail pointer to the tail of the DLL (struct ? *)
* @param element element to remove (struct ? *)
*/
#define DLL_remove(head,tail,element) do { \
if ((element)->prev == NULL) \
(head) = (element)->next; \
else \
(element)->prev->next = (element)->next; \
if ((element)->next == NULL) \
(tail) = (element)->prev; \
else \
(element)->next->prev = (element)->prev; \
(element)->next = NULL; \
(element)->prev = NULL; } while (0)
#define PRINT_INFO(msg) do{\
if(glob_opt.verbose){\
printf("%i:%s\n", __LINE__, msg);\
fflush(stdout);\
}\
}\
while(0)
#define PRINT_INFO2(fmt, ...) do{\
if(glob_opt.verbose){\
printf("%i\n", __LINE__);\
printf(fmt,##__VA_ARGS__);\
printf("\n");\
fflush(stdout);\
}\
}\
while(0)
#define DIE(msg) do{\
printf("FATAL ERROR (line %i): %s\n", __LINE__, msg);\
fflush(stdout);\
exit(EXIT_FAILURE);\
}\
while(0)
void
free_uri(struct URI * uri);
int
init_parse_uri(regex_t * preg);
void
deinit_parse_uri(regex_t * preg);
int
parse_uri(regex_t * preg, char * full_uri, struct URI ** uri);
void
free_proxy(struct Proxy *proxy);
void *au_malloc(size_t size);
#endif
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