challenge.c File Reference

#include <config.h>
#include <ctype.h>
#include <freetds/time.h>
#include <freetds/tds.h>
#include <freetds/bytes.h>
#include <freetds/utils/string.h>
#include <freetds/iconv.h>
#include <freetds/utils.h>
#include <freetds/utils/md4.h>
#include <freetds/utils/md5.h>
#include <freetds/utils/hmac_md5.h>
#include <freetds/utils/des.h>
#include <freetds/replacements.h>

Include dependency graph for challenge.c:

Go to the source code of this file.

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Classes
struct	tds_answer
struct	names_blob_prefix_t
struct	tds_ntlm_auth

Macros
#define	MAX_PW_SZ   14
#define	TIME_FIXUP_CONSTANT   (((uint64_t) 134774U) * 86400U)

Typedefs
typedef struct tds_answer	TDSANSWER
typedef struct tds_ntlm_auth	TDSNTLMAUTH

Functions
static TDSRET	tds_answer_challenge (TDSSOCKET *tds, TDSLOGIN *login, const unsigned char *challenge, uint32_t *flags, const unsigned char *names_blob, int names_blob_len, TDSANSWER *answer, unsigned char **ntlm_v2_response)
	Crypt a given password using schema required for NTLMv1 or NTLM2 authentication. More...
static void	tds_encrypt_answer (const unsigned char *hash, const unsigned char *challenge, unsigned char *answer)
static void	tds_convert_key (const unsigned char *key_56, DES_KEY *ks)
static void	convert_to_upper (char *buf, size_t len)
static size_t	convert_to_usc2le_string (TDSSOCKET *tds, const char *s, size_t len, char *out)
static TDSRET	make_ntlm_hash (TDSSOCKET *tds, const char *passwd, unsigned char ntlm_hash[16])
static TDSRET	make_ntlm_v2_hash (TDSSOCKET *tds, const char *passwd, unsigned char ntlm_v2_hash[16])
static unsigned char *	make_lm_v2_response (const unsigned char ntlm_v2_hash[16], const unsigned char *client_data, int client_data_len, const unsigned char challenge[8])
static TDSRET	tds_answer_challenge_ntlmv2 (TDSSOCKET *tds, TDSLOGIN *login, const unsigned char *challenge, uint32_t *flags, const unsigned char *names_blob, int names_blob_len, TDSANSWER *answer, unsigned char **ntlm_v2_response)
static TDSRET	tds7_send_auth (TDSSOCKET *tds, const unsigned char *challenge, uint32_t flags, const unsigned char *names_blob, int names_blob_len)
static TDSRET	tds_ntlm_free (TDSCONNECTION *conn, TDSAUTHENTICATION *tds_auth)
static void	unix_to_nt_time (uint64_t *nt, struct timeval *tv)
	put a 8 byte filetime from a time_t This takes GMT as input More...
static void	fill_names_blob_prefix (names_blob_prefix_t *prefix)
static TDSRET	tds_ntlm_handle_next (TDSSOCKET *tds, struct tds_authentication *auth, size_t len)
TDSAUTHENTICATION *	tds_ntlm_get_auth (TDSSOCKET *tds)
	Build a NTLMSPP packet to send to server. More...

Variables
static const unsigned char	ntlm_id [] = "NTLMSSP"

Macro Definition Documentation

MAX_PW_SZ

#define MAX_PW_SZ   14

TIME_FIXUP_CONSTANT

#define TIME_FIXUP_CONSTANT   (((uint64_t) 134774U) * 86400U)

Function Documentation

convert_to_upper()

static void convert_to_upper ( char *  buf, size_t  len  )

static

Definition at line 94 of file challenge.c.

References buf, i, len, and toupper().

Referenced by make_ntlm_v2_hash().

convert_to_usc2le_string()

static size_t convert_to_usc2le_string ( TDSSOCKET *  tds, const char *  s, size_t  len, char *  out  )

static

Definition at line 103 of file challenge.c.

References tds_connection::char_convs, client2ucs2, tds_socket::conn, tdsiconvinfo::flags, if(), len, out(), tdsiconvinfo::suppress, tds, TDS_ENCODING_MEMCPY, tds_iconv, and to_server.

Referenced by make_ntlm_hash(), make_ntlm_v2_hash(), and tds7_send_auth().

fill_names_blob_prefix()

static void fill_names_blob_prefix ( names_blob_prefix_t *  prefix )

static

Definition at line 607 of file challenge.c.

References names_blob_prefix_t::challenge, names_blob_prefix_t::max_response_type, NULL, names_blob_prefix_t::reserved1, names_blob_prefix_t::reserved2, names_blob_prefix_t::response_type, tds_random_buffer, tds_swap_bytes, names_blob_prefix_t::timestamp, unix_to_nt_time(), and names_blob_prefix_t::unknown.

Referenced by tds_ntlm_handle_next().

make_ntlm_hash()

static TDSRET make_ntlm_hash ( TDSSOCKET *  tds, const char *  passwd, unsigned char  ntlm_hash[16]  )

static

Definition at line 132 of file challenge.c.

References context, convert_to_usc2le_string(), MD4Final, MD4Init, MD4Update, tds, TDS_FAIL, and TDS_SUCCESS.

Referenced by make_ntlm_v2_hash(), and tds_answer_challenge().

make_ntlm_v2_hash()

static TDSRET make_ntlm_v2_hash ( TDSSOCKET *  tds, const char *  passwd, unsigned char  ntlm_v2_hash[16]  )

static

Definition at line 163 of file challenge.c.

References buf, convert_to_upper(), convert_to_usc2le_string(), hmac_md5, len, tds_socket::login, make_ntlm_hash(), NULL, tds, tds_dstr_cstr(), TDS_FAIL, and tds_login::user_name.

Referenced by tds_answer_challenge_ntlmv2().

tds_convert_key()

static void tds_convert_key ( const unsigned char *  key_56, DES_KEY *  ks  )

static

Definition at line 400 of file challenge.c.

References ncbi::grid::netcache::search::fields::key, tds_des_set_key, and tds_des_set_odd_parity.

Referenced by tds_answer_challenge(), and tds_encrypt_answer().

tds_encrypt_answer()

static void tds_encrypt_answer ( const unsigned char *  hash, const unsigned char *  challenge, unsigned char *  answer  )

static

Definition at line 378 of file challenge.c.

References tds_convert_key(), and tds_des_ecb_encrypt.

Referenced by tds_answer_challenge().

tds_ntlm_free()

static TDSRET tds_ntlm_free ( TDSCONNECTION *  conn, TDSAUTHENTICATION *  tds_auth  )

static

Definition at line 574 of file challenge.c.

References free(), tds_authentication::packet, tds_ntlm_auth::tds_auth, and TDS_SUCCESS.

Referenced by tds_ntlm_get_auth().

tds_ntlm_handle_next()

static TDSRET tds_ntlm_handle_next ( TDSSOCKET *  tds, struct tds_authentication *  auth, size_t  len  )

static

Definition at line 629 of file challenge.c.

References fill_names_blob_prefix(), flags, free(), int, len, ntlm_id, NULL, tds, tds7_send_auth(), TDS_DBG_INFO1, TDS_FAIL, tds_get_int, tds_get_n, tds_get_smallint, tds_new0, TDS_OFFSET, tdsdump_dump_buf, and tdsdump_log.

Referenced by tds_ntlm_get_auth().