proxy.c File Reference

#include "syshead.h"
#include "common.h"
#include "misc.h"
#include "crypto.h"
#include "win32.h"
#include "socket.h"
#include "fdmisc.h"
#include "proxy.h"
#include "base64.h"
#include "httpdigest.h"
#include "memdbg.h"
#include "forward.h"

Include dependency graph for proxy.c:

Go to the source code of this file.

Macros
#define	UP_TYPE_PROXY   "HTTP Proxy"

Functions
struct http_proxy_options *	init_http_proxy_options_once (struct http_proxy_options **hpo, struct gc_arena *gc)
bool	proxy_recv_char (uint8_t *c, const char *name, socket_descriptor_t sd, struct timeval *timeout, volatile int *signal_received)
static bool	recv_line (socket_descriptor_t sd, char *buf, int len, const int timeout_sec, const bool verbose, struct buffer *lookahead, volatile int *signal_received)
bool	proxy_send (socket_descriptor_t sd, const void *buf, size_t len)
static bool	send_line_crlf (socket_descriptor_t sd, const char *src)
static bool	send_crlf (socket_descriptor_t sd)
uint8_t *	make_base64_string2 (const uint8_t *str, int src_len, struct gc_arena *gc)
uint8_t *	make_base64_string (const uint8_t *str, struct gc_arena *gc)
static const char *	username_password_as_base64 (const struct http_proxy_info *p, struct gc_arena *gc)
static void	clear_user_pass_http (void)
static void	get_user_pass_http (struct http_proxy_info *p, const bool force)
static int	get_proxy_authenticate (socket_descriptor_t sd, int timeout, char **data, volatile int *signal_received)
static void	store_proxy_authenticate (struct http_proxy_info *p, char *data)
static bool	get_key_value (const char *str, char *key, char *value, int max_key_len, int max_value_len, const char **endptr)
static char *	get_pa_var (const char *key, const char *pa, struct gc_arena *gc)
struct http_proxy_info *	http_proxy_new (const struct http_proxy_options *o)
void	http_proxy_close (struct http_proxy_info *hp)
static bool	add_proxy_headers (const struct http_proxy_info *p, socket_descriptor_t sd, const char *host)
bool	establish_http_proxy_passthru (struct http_proxy_info *p, socket_descriptor_t sd, const char *host, const char *port, const struct event_timeout *server_poll_timeout, struct buffer *lookahead, struct signal_info *sig_info)

Variables
static struct user_pass	static_proxy_user_pass

Macro Definition Documentation

UP_TYPE_PROXY

#define UP_TYPE_PROXY   "HTTP Proxy"

Definition at line 41 of file proxy.c.

Referenced by get_user_pass_http().

Function Documentation

add_proxy_headers()

bool add_proxy_headers ( const struct http_proxy_info * p, socket_descriptor_t sd, const char * host )

static

Definition at line 530 of file proxy.c.

References http_custom_header::content, http_proxy_options::custom_headers, D_PROXY, MAX_CUSTOM_HTTP_HEADER, msg, http_custom_header::name, http_proxy_info::options, send_line_crlf(), and http_proxy_options::user_agent.

Referenced by establish_http_proxy_passthru().

clear_user_pass_http()

void clear_user_pass_http ( void )

static

Definition at line 246 of file proxy.c.

References purge_user_pass(), and static_proxy_user_pass.

Referenced by establish_http_proxy_passthru(), and get_user_pass_http().

establish_http_proxy_passthru()

bool establish_http_proxy_passthru	(	struct http_proxy_info *	p,
		socket_descriptor_t	sd,
		const char *	host,
		const char *	port,
		const struct event_timeout *	server_poll_timeout,
		struct buffer *	lookahead,
		struct signal_info *	sig_info )

Definition at line 597 of file proxy.c.

References add_proxy_headers(), ASSERT, http_proxy_info::auth_method, http_proxy_options::auth_retry, BLEN, BPTR, checked_snprintf(), chomp(), clear_user_pass_http(), D_LINK_ERRORS, D_PROXY, D_SHOW_KEYS, DigestCalcHA1(), DigestCalcResponse(), dmsg, format_hex(), gc, gc_free(), gc_malloc(), gc_new(), get_pa_var(), get_proxy_authenticate(), get_server_poll_remaining_time(), get_user_pass_http(), HTTP_AUTH_BASIC, HTTP_AUTH_DIGEST, HTTP_AUTH_NONE, http_proxy_options::http_version, M_INFO, make_base64_string2(), msg, user_pass::nocache, http_proxy_info::options, PAR_NCT, user_pass::password, prng_bytes(), http_proxy_info::proxy_authenticate, purge_user_pass(), http_proxy_info::queried_creds, recv_line(), register_signal(), secure_memzero(), send_crlf(), send_line_crlf(), signal_info::signal_received, SIGUSR1, status, store_proxy_authenticate(), unprotect_user_pass(), http_proxy_info::up, user_pass::username, and username_password_as_base64().

Referenced by phase2_tcp_client().

get_key_value()

bool get_key_value ( const char * str, char * key, char * value, int max_key_len, int max_value_len, const char ** endptr )

static

Definition at line 366 of file proxy.c.

Referenced by get_pa_var().

get_pa_var()

char * get_pa_var ( const char * key, const char * pa, struct gc_arena * gc )

static

Definition at line 445 of file proxy.c.

References gc, get_key_value(), status, and string_alloc().

Referenced by establish_http_proxy_passthru().

get_proxy_authenticate()

int get_proxy_authenticate ( socket_descriptor_t sd, int timeout, char ** data, volatile int * signal_received )

static

Definition at line 316 of file proxy.c.

References chomp(), D_PROXY, buffer::data, HTTP_AUTH_BASIC, HTTP_AUTH_DIGEST, HTTP_AUTH_NONE, msg, recv_line(), and string_alloc().

Referenced by establish_http_proxy_passthru().

get_user_pass_http()

void get_user_pass_http ( struct http_proxy_info * p, const bool force )

static

Definition at line 252 of file proxy.c.

References http_proxy_options::auth_file, http_proxy_options::auth_file_up, clear_user_pass_http(), get_user_pass(), GET_USER_PASS_INLINE_CREDS, GET_USER_PASS_MANAGEMENT, GET_USER_PASS_PREVIOUS_CREDS_FAILED, http_proxy_options::inline_creds, http_proxy_options::nocache, http_proxy_info::options, protect_user_pass(), http_proxy_info::queried_creds, static_proxy_user_pass, http_proxy_info::up, and UP_TYPE_PROXY.

Referenced by establish_http_proxy_passthru(), and http_proxy_new().

http_proxy_close()

void http_proxy_close

(

struct http_proxy_info *

hp

)

Definition at line 524 of file proxy.c.

Referenced by uninit_proxy_dowork().

http_proxy_new()

struct http_proxy_info * http_proxy_new

(

const struct http_proxy_options *

o

)

Definition at line 479 of file proxy.c.

References ALLOC_OBJ_CLEAR, ASSERT, http_proxy_info::auth_method, http_proxy_options::auth_method_string, http_proxy_info::defined, http_proxy_options::first_time, get_user_pass_http(), HTTP_AUTH_BASIC, HTTP_AUTH_NONE, M_FATAL, msg, http_proxy_info::options, http_proxy_options::port, and http_proxy_options::server.

Referenced by init_proxy_dowork().

init_http_proxy_options_once()

struct http_proxy_options * init_http_proxy_options_once	(	struct http_proxy_options **	hpo,
		struct gc_arena *	gc )

Definition at line 44 of file proxy.c.

References ALLOC_OBJ_CLEAR_GC, and gc.

Referenced by add_option(), and management_callback_proxy_cmd().

make_base64_string()

uint8_t * make_base64_string	(	const uint8_t *	str,
		struct gc_arena *	gc )

Definition at line 229 of file proxy.c.

References gc, and make_base64_string2().

Referenced by username_password_as_base64().

make_base64_string2()

uint8_t * make_base64_string2	(	const uint8_t *	str,
		int	src_len,
		struct gc_arena *	gc )

Definition at line 218 of file proxy.c.

References ASSERT, gc, openvpn_base64_encode(), and string_alloc().

Referenced by establish_http_proxy_passthru(), and make_base64_string().

proxy_recv_char()

bool proxy_recv_char	(	uint8_t *	c,
		const char *	name,
		socket_descriptor_t	sd,
		struct timeval *	timeout,
		volatile int *	signal_received )

Definition at line 60 of file proxy.c.

References D_LINK_ERRORS, get_signal(), M_ERRNO, msg, MSG_NOSIGNAL, openvpn_fd_set(), openvpn_select(), and status.

Referenced by recv_line(), and socks_proxy_recv_char().

proxy_send()

bool proxy_send	(	socket_descriptor_t	sd,
		const void *	buf,
		size_t	len )

Definition at line 187 of file proxy.c.

References D_LINK_ERRORS, M_ERRNO, msg, MSG_NOSIGNAL, and openvpn_send().

Referenced by establish_socks_proxy_passthru(), send_line_crlf(), socks_handshake(), and socks_username_password_auth().

recv_line()

bool recv_line ( socket_descriptor_t sd, char * buf, int len, const int timeout_sec, const bool verbose, struct buffer * lookahead, volatile int * signal_received )

static

Definition at line 104 of file proxy.c.

References ASSERT, buf_defined(), buf_init, buf_write_u8(), CLEAR, D_LINK_ERRORS, M_ERRNO, M_INFO, msg, and proxy_recv_char().

Referenced by establish_http_proxy_passthru(), and get_proxy_authenticate().

send_crlf()

bool send_crlf ( socket_descriptor_t sd )

static

Definition at line 212 of file proxy.c.

References send_line_crlf().

Referenced by establish_http_proxy_passthru().

send_line_crlf()

bool send_line_crlf ( socket_descriptor_t sd, const char * src )

static

Definition at line 199 of file proxy.c.

References alloc_buf(), ASSERT, BLEN, BSTR, buf_write(), free_buf(), and proxy_send().

Referenced by add_proxy_headers(), establish_http_proxy_passthru(), and send_crlf().

store_proxy_authenticate()

void store_proxy_authenticate ( struct http_proxy_info * p, char * data )

static

Definition at line 355 of file proxy.c.

References buffer::data, and http_proxy_info::proxy_authenticate.

Referenced by establish_http_proxy_passthru().

username_password_as_base64()

const char * username_password_as_base64 ( const struct http_proxy_info * p, struct gc_arena * gc )

static

Definition at line 235 of file proxy.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), gc, buffer::len, make_base64_string(), user_pass::password, secure_memzero(), http_proxy_info::up, and user_pass::username.

Referenced by establish_http_proxy_passthru().

Variable Documentation

static_proxy_user_pass

struct user_pass static_proxy_user_pass

static

Definition at line 57 of file proxy.c.

Referenced by clear_user_pass_http(), and get_user_pass_http().