#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 "ntlm.h"
#include "memdbg.h"
#include "forward.h"

Include dependency graph for proxy.c:

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)

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)

static bool	send_line (socket_descriptor_t sd, const char *buf)

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

bool	establish_http_proxy_passthru (struct http_proxy_info p, socket_descriptor_t sd, const char host, const char port, 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 43 of file proxy.c.

Function Documentation

◆ add_proxy_headers()

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

static

Definition at line 566 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, openvpn_snprintf(), http_proxy_info::options, send_line_crlf(), and http_proxy_options::user_agent.

Referenced by establish_http_proxy_passthru().

◆ clear_user_pass_http()

static void clear_user_pass_http ( void )

static

Definition at line 254 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,
		struct event_timeout *	server_poll_timeout,
		struct buffer *	lookahead,
		struct signal_info *	sig_info
	)

Definition at line 637 of file proxy.c.

References add_proxy_headers(), ASSERT, http_proxy_info::auth_method, http_proxy_options::auth_retry, BLEN, BPTR, chomp(), CLEAR, clear_user_pass_http(), D_LINK_ERRORS, D_PROXY, D_SHOW_KEYS, DigestCalcHA1(), DigestCalcResponse(), dmsg, format_hex(), 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_AUTH_NTLM2, http_proxy_options::http_version, M_INFO, make_base64_string2(), msg, ntlm_phase_1(), ntlm_phase_3(), openvpn_snprintf(), http_proxy_info::options, PAR_NCT, user_pass::password, http_proxy_info::proxy_authenticate, http_proxy_info::queried_creds, rand_bytes(), recv_line(), register_signal(), send_crlf(), send_line_crlf(), http-client::session_key, signal_info::signal_received, status, store_proxy_authenticate(), http_proxy_info::up, user_pass::username, and username_password_as_base64().

Referenced by phase2_tcp_client().

◆ get_key_value()

static 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 381 of file proxy.c.

Referenced by get_pa_var().

◆ get_pa_var()

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

static

Definition at line 462 of file proxy.c.

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

Referenced by establish_http_proxy_passthru().

◆ get_proxy_authenticate()

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

static

Definition at line 321 of file proxy.c.

References chomp(), D_PROXY, buffer::data, HTTP_AUTH_BASIC, HTTP_AUTH_DIGEST, HTTP_AUTH_NONE, HTTP_AUTH_NTLM2, msg, recv_line(), and string_alloc().

Referenced by establish_http_proxy_passthru().

◆ get_user_pass_http()

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

static

Definition at line 260 of file proxy.c.

References http_proxy_options::auth_file, http_proxy_options::auth_file_up, clear_user_pass_http(), user_pass::defined, 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_info::options, 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 560 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 496 of file proxy.c.

References ALLOC_OBJ_CLEAR, ASSERT, http_proxy_info::auth_method, http_proxy_options::auth_method_string, http_proxy_info::defined, get_user_pass_http(), HTTP_AUTH_BASIC, HTTP_AUTH_NONE, HTTP_AUTH_NTLM2, M_FATAL, M_WARN, msg, http_proxy_info::options, PACKAGE_NAME, 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 46 of file proxy.c.

References ALLOC_OBJ_CLEAR_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 238 of file proxy.c.

References 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 227 of file proxy.c.

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

Referenced by establish_http_proxy_passthru(), make_base64_string(), and ntlm_phase_3().

◆ recv_line()

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
	)