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/* Copyright (c) 2003-2004, Roger Dingledine
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2013, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file transports.h
* \brief Headers for transports.c
**/
#ifndef TOR_TRANSPORTS_H
#define TOR_TRANSPORTS_H
/** Represents a pluggable transport used by a bridge. */
typedef struct transport_t {
/** SOCKS version: One of PROXY_SOCKS4, PROXY_SOCKS5. */
int socks_version;
/** Name of pluggable transport protocol */
char *name;
/** The IP address where the transport bound and is waiting for
* connections. */
tor_addr_t addr;
/** Port of proxy */
uint16_t port;
/** Boolean: We are re-parsing our transport list, and we are going to remove
* this one if we don't find it in the list of configured transports. */
unsigned marked_for_removal : 1;
} transport_t;
void mark_transport_list(void);
void sweep_transport_list(void);
int transport_add_from_config(const tor_addr_t *addr, uint16_t port,
const char *name, int socks_ver);
void transport_free(transport_t *transport);
transport_t *transport_get_by_name(const char *name);
void pt_kickstart_proxy(const smartlist_t *transport_list, char **proxy_argv,
int is_server);
#define pt_kickstart_client_proxy(tl, pa) \
pt_kickstart_proxy(tl, pa, 0)
#define pt_kickstart_server_proxy(tl, pa) \
pt_kickstart_proxy(tl, pa, 1)
void pt_configure_remaining_proxies(void);
int pt_proxies_configuration_pending(void);
char *pt_get_extra_info_descriptor_string(void);
void pt_free_all(void);
void pt_prepare_proxy_list_for_config_read(void);
void sweep_proxy_list(void);
smartlist_t *get_transport_proxy_ports(void);
char *pt_stringify_socks_args(const smartlist_t *socks_args);
char *pt_get_socks_args_for_proxy_addrport(const tor_addr_t *addr,
uint16_t port);
#ifdef PT_PRIVATE
/** State of the managed proxy configuration protocol. */
enum pt_proto_state {
PT_PROTO_INFANT, /* was just born */
PT_PROTO_LAUNCHED, /* was just launched */
PT_PROTO_ACCEPTING_METHODS, /* accepting methods */
PT_PROTO_CONFIGURED, /* configured successfully */
PT_PROTO_COMPLETED, /* configure and registered its transports */
PT_PROTO_BROKEN, /* broke during the protocol */
PT_PROTO_FAILED_LAUNCH /* failed while launching */
};
/** Structure containing information of a managed proxy. */
typedef struct {
enum pt_proto_state conf_state; /* the current configuration state */
char **argv; /* the cli arguments of this proxy */
int conf_protocol; /* the configuration protocol version used */
int is_server; /* is it a server proxy? */
/* A pointer to the process handle of this managed proxy. */
process_handle_t *process_handle;
int pid; /* The Process ID this managed proxy is using. */
/** Boolean: We are re-parsing our config, and we are going to
* remove this managed proxy if we don't find it any transport
* plugins that use it. */
unsigned int marked_for_removal : 1;
/** Boolean: We got a SIGHUP while this proxy was running. We use
* this flag to signify that this proxy might need to be restarted
* so that it can listen for other transports according to the new
* torrc. */
unsigned int got_hup : 1;
/* transports to-be-launched by this proxy */
smartlist_t *transports_to_launch;
/* The 'transports' list contains all the transports this proxy has
launched. */
smartlist_t *transports;
} managed_proxy_t;
STATIC int parse_cmethod_line(const char *line, managed_proxy_t *mp);
STATIC int parse_smethod_line(const char *line, managed_proxy_t *mp);
STATIC int parse_version(const char *line, managed_proxy_t *mp);
STATIC void parse_env_error(const char *line);
STATIC void handle_proxy_line(const char *line, managed_proxy_t *mp);
STATIC int configure_proxy(managed_proxy_t *mp);
#endif
#endif
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