ntlm.c File Reference

#include "syshead.h"
#include "common.h"
#include "buffer.h"
#include "misc.h"
#include "socket.h"
#include "fdmisc.h"
#include "proxy.h"
#include "ntlm.h"
#include "base64.h"
#include "crypto.h"
#include "memdbg.h"

Include dependency graph for ntlm.c:

Go to the source code of this file.

Macros
#define	UINTEGER64   unsigned long long
#define	UINT64(c)   c ## LL

Functions
static void	create_des_keys (const unsigned char *hash, unsigned char *key)
static void	gen_md4_hash (const uint8_t *data, int data_len, uint8_t *result)
static void	gen_hmac_md5 (const uint8_t *data, int data_len, const uint8_t *key, uint8_t *result)
static void	gen_timestamp (uint8_t *timestamp)
static void	gen_nonce (unsigned char *nonce)
static void	my_strupr (char *str)
static int	unicodize (char *dst, const char *src)
	This function expects a null-terminated string in src and will copy it (including the terminating NUL byte), alternating it with 0 to dst. More...
static void	add_security_buffer (int sb_offset, void *data, int length, unsigned char *msg_buf, int *msg_bufpos)
const char *	ntlm_phase_1 (const struct http_proxy_info *p, struct gc_arena *gc)
const char *	ntlm_phase_3 (const struct http_proxy_info *p, const char *phase_2, struct gc_arena *gc)

Macro Definition Documentation

UINT64

#define UINT64

(

c

)

c ## LL

Definition at line 52 of file ntlm.c.

UINTEGER64

#define UINTEGER64   unsigned long long

Definition at line 51 of file ntlm.c.

Function Documentation

add_security_buffer()

static void add_security_buffer ( int  sb_offset, void *  data, int  length, unsigned char *  msg_buf, int *  msg_bufpos  )

static

Definition at line 169 of file ntlm.c.

Referenced by ntlm_phase_3().

create_des_keys()

static void create_des_keys ( const unsigned char *  hash, unsigned char *  key  )

static

Definition at line 58 of file ntlm.c.

Referenced by ntlm_phase_3().

gen_hmac_md5()

static void gen_hmac_md5 ( const uint8_t *  data, int  data_len, const uint8_t *  key, uint8_t *  result  )

static

Definition at line 81 of file ntlm.c.

References hmac_ctx_cleanup(), hmac_ctx_final(), hmac_ctx_free(), hmac_ctx_init(), hmac_ctx_new(), and hmac_ctx_update().

Referenced by ntlm_phase_3().

gen_md4_hash()

static void gen_md4_hash ( const uint8_t *  data, int  data_len, uint8_t *  result  )

static

Definition at line 71 of file ntlm.c.

References MD4_DIGEST_LENGTH, and md_full().

Referenced by ntlm_phase_3().

gen_nonce()

static void gen_nonce ( unsigned char *  nonce )

static

Definition at line 118 of file ntlm.c.

References get_random().

Referenced by ntlm_phase_3().

gen_timestamp()

static void gen_timestamp ( uint8_t *  timestamp )

static

Definition at line 94 of file ntlm.c.

References openvpn_time(), UINT64, and UINTEGER64.

Referenced by ntlm_phase_3().

my_strupr()

static void my_strupr ( char *  str )

static

Definition at line 130 of file ntlm.c.

Referenced by ntlm_phase_3().

ntlm_phase_1()

const char* ntlm_phase_1	(	const struct http_proxy_info *	p,
		struct gc_arena *	gc
	)

Definition at line 183 of file ntlm.c.

References alloc_buf_gc(), BSTR, and buf_printf().

Referenced by establish_http_proxy_passthru().

ntlm_phase_3()

const char* ntlm_phase_3	(	const struct http_proxy_info *	p,
		const char *	phase_2,
		struct gc_arena *	gc
	)

Definition at line 200 of file ntlm.c.

References add_security_buffer(), ASSERT, http_proxy_info::auth_method, cipher_des_encrypt_ecb(), CLEAR, create_des_keys(), DES_KEY_LENGTH, gen_hmac_md5(), gen_md4_hash(), gen_nonce(), gen_timestamp(), HTTP_AUTH_NTLM2, key1, key3, buffer::len, M_INFO, make_base64_string2(), MD4_DIGEST_LENGTH, MD5_DIGEST_LENGTH, msg, my_strupr(), openvpn_base64_decode(), user_pass::password, unicodize(), http_proxy_info::up, and user_pass::username.

Referenced by establish_http_proxy_passthru().

unicodize()

static int unicodize ( char *  dst, const char *  src  )

static

This function expects a null-terminated string in src and will copy it (including the terminating NUL byte), alternating it with 0 to dst.

This basically will transform a ASCII string into valid UTF-16. Characters that are 8bit in src, will get the same treatment, resulting in invalid or wrong unicode code points.

Note

the function will blindly assume that dst has double the space of src.

Returns

the length of the number of bytes written to dst

Definition at line 155 of file ntlm.c.

Referenced by ntlm_phase_3().