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Code

Move our NTLMSSP code into easily seperated peices, not relying on the whole

Browse Source 
of libsmb.

Andrew Bartlett
(This used to be commit b5ec7efa80478187124c1cfa8c7fcc4036506a37)
This commit is contained in:
Andrew Bartlett 2003-02-15 00:10:09 +00:00
parent a2781ba60d
commit 3b2693f1ae
4 changed files with 353 additions and 327 deletions
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12
source3/Makefile.in
View File

@ -186,18 +186,22 @@ LIBADS_SERVER_OBJ = libads/util.o libads/kerberos_verify.o
SECRETS_OBJ = passdb/secrets.o
LIBNTLMSSP_OBJ = libsmb/ntlmssp.o libsmb/ntlmssp_parse.o
LIBSAMBA_OBJ = libsmb/nterr.o
LIBSMB_OBJ = libsmb/clientgen.o libsmb/cliconnect.o libsmb/clifile.o \
libsmb/clikrb5.o libsmb/clispnego.o libsmb/asn1.o \
libsmb/clirap.o libsmb/clierror.o libsmb/climessage.o \
libsmb/clireadwrite.o libsmb/clilist.o libsmb/cliprint.o \
libsmb/clitrans.o libsmb/clisecdesc.o libsmb/clidgram.o \
libsmb/namequery.o libsmb/nmblib.o libsmb/clistr.o \
libsmb/nterr.o libsmb/smbdes.o libsmb/smbencrypt.o \
libsmb/smbdes.o libsmb/smbencrypt.o \
libsmb/smberr.o libsmb/credentials.o libsmb/pwd_cache.o \
libsmb/clioplock.o libsmb/errormap.o libsmb/clirap2.o \
libsmb/passchange.o libsmb/unexpected.o libsmb/doserr.o \
libsmb/namecache.o libsmb/trustdom_cache.o libsmb/ntlmssp.o \
$(RPC_PARSE_OBJ1)
libsmb/namecache.o libsmb/trustdom_cache.o \
$(RPC_PARSE_OBJ1) $(LIBNTLMSSP_OBJ) $(LIBSAMBA_OBJ)
LIBMSRPC_OBJ = rpc_client/cli_lsarpc.o rpc_client/cli_samr.o \
rpc_client/cli_netlogon.o rpc_client/cli_srvsvc.o \
@ -594,7 +598,7 @@ POPT_OBJS=popt/findme.o popt/popt.o popt/poptconfig.o \
TDBBACKUP_OBJ = tdb/tdbbackup.o $(TDBBASE_OBJ)
NTLM_AUTH_OBJ = utils/ntlm_auth.o $(LIBSMB_OBJ) $(POPT_LIB_OBJ)
NTLM_AUTH_OBJ = utils/ntlm_auth.o $(LIBNTLMSSP_OBJ) $(LIBSAMBA_OBJ) $(POPT_LIB_OBJ)
######################################################################
# now the rules...

322
source3/libsmb/clispnego.c
View File

@ -478,325 +478,3 @@ DATA_BLOB spnego_gen_auth_response(DATA_BLOB *ntlmssp_reply, NTSTATUS nt_status)
asn1_free(&data);
return ret;
}
/*
this is a tiny msrpc packet generator. I am only using this to
avoid tying this code to a particular varient of our rpc code. This
generator is not general enough for all our rpc needs, its just
enough for the spnego/ntlmssp code
format specifiers are:
U = unicode string (input is unix string)
a = address (input is BOOL unicode, char *unix_string)
(1 byte type, 1 byte length, unicode/ASCII string, all inline)
A = ASCII string (input is unix string)
B = data blob (pointer + length)
b = data blob in header (pointer + length)
D
d = word (4 bytes)
C = constant ascii string
*/
BOOL msrpc_gen(DATA_BLOB *blob,
const char *format, ...)
{
int i, n;
va_list ap;
char *s;
uint8 *b;
int head_size=0, data_size=0;
int head_ofs, data_ofs;
BOOL unicode;
/* first scan the format to work out the header and body size */
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
s = va_arg(ap, char *);
head_size += 8;
data_size += str_charnum(s) * 2;
break;
case 'A':
s = va_arg(ap, char *);
head_size += 8;
data_size += str_ascii_charnum(s);
break;
case 'a':
unicode = va_arg(ap, BOOL);
n = va_arg(ap, int);
s = va_arg(ap, char *);
if (unicode) {
data_size += (str_charnum(s) * 2) + 4;
} else {
data_size += (str_ascii_charnum(s)) + 4;
}
break;
case 'B':
b = va_arg(ap, uint8 *);
head_size += 8;
data_size += va_arg(ap, int);
break;
case 'b':
b = va_arg(ap, uint8 *);
head_size += va_arg(ap, int);
break;
case 'd':
n = va_arg(ap, int);
head_size += 4;
break;
case 'C':
s = va_arg(ap, char *);
head_size += str_charnum(s) + 1;
break;
}
}
va_end(ap);
/* allocate the space, then scan the format again to fill in the values */
*blob = data_blob(NULL, head_size + data_size);
head_ofs = 0;
data_ofs = head_size;
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
s = va_arg(ap, char *);
n = str_charnum(s);
SSVAL(blob->data, head_ofs, n*2); head_ofs += 2;
SSVAL(blob->data, head_ofs, n*2); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
push_string(NULL, blob->data+data_ofs, s, n*2, STR_UNICODE|STR_NOALIGN);
data_ofs += n*2;
break;
case 'A':
s = va_arg(ap, char *);
n = str_ascii_charnum(s);
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
push_string(NULL, blob->data+data_ofs, s, n, STR_ASCII|STR_NOALIGN);
data_ofs += n;
break;
case 'a':
unicode = va_arg(ap, BOOL);
n = va_arg(ap, int);
SSVAL(blob->data, data_ofs, n); data_ofs += 2;
s = va_arg(ap, char *);
if (unicode) {
n = str_charnum(s);
SSVAL(blob->data, data_ofs, n*2); data_ofs += 2;
if (0 < n) {
push_string(NULL, blob->data+data_ofs, s, n*2,
STR_UNICODE|STR_NOALIGN);
}
data_ofs += n*2;
} else {
n = str_ascii_charnum(s);
SSVAL(blob->data, data_ofs, n); data_ofs += 2;
if (0 < n) {
push_string(NULL, blob->data+data_ofs, s, n,
STR_ASCII|STR_NOALIGN);
}
data_ofs += n;
}
break;
case 'B':
b = va_arg(ap, uint8 *);
n = va_arg(ap, int);
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
memcpy(blob->data+data_ofs, b, n);
data_ofs += n;
break;
case 'd':
n = va_arg(ap, int);
SIVAL(blob->data, head_ofs, n); head_ofs += 4;
break;
case 'b':
b = va_arg(ap, uint8 *);
n = va_arg(ap, int);
memcpy(blob->data + head_ofs, b, n);
head_ofs += n;
break;
case 'C':
s = va_arg(ap, char *);
head_ofs += push_string(NULL, blob->data+head_ofs, s, -1,
STR_ASCII|STR_TERMINATE);
break;
}
}
va_end(ap);
return True;
}
/* a helpful macro to avoid running over the end of our blob */
#define NEED_DATA(amount) \
if (head_ofs + amount > blob->length) { \
return False; \
}
/*
this is a tiny msrpc packet parser. This the the partner of msrpc_gen
format specifiers are:
U = unicode string (output is unix string)
A = ascii string
B = data blob
b = data blob in header
d = word (4 bytes)
C = constant ascii string
*/
BOOL msrpc_parse(DATA_BLOB *blob,
const char *format, ...)
{
int i;
va_list ap;
char **ps, *s;
DATA_BLOB *b;
int head_ofs = 0;
uint16 len1, len2;
uint32 ptr;
uint32 *v;
pstring p;
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
if (len1 & 1) {
/* if odd length and unicode */
return False;
}
ps = va_arg(ap, char **);
if (0 < len1) {
pull_string(NULL, p, blob->data + ptr, sizeof(p),
len1,
STR_UNICODE|STR_NOALIGN);
(*ps) = strdup(p);
} else {
(*ps) = NULL;
}
break;
case 'A':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
ps = va_arg(ap, char **);
if (0 < len1) {
pull_string(NULL, p, blob->data + ptr, sizeof(p),
len1,
STR_ASCII|STR_NOALIGN);
(*ps) = strdup(p);
} else {
(*ps) = NULL;
}
break;
case 'B':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
b = (DATA_BLOB *)va_arg(ap, void *);
*b = data_blob(blob->data + ptr, len1);
break;
case 'b':
b = (DATA_BLOB *)va_arg(ap, void *);
len1 = va_arg(ap, unsigned);
/* make sure its in the right format - be strict */
NEED_DATA(len1);
*b = data_blob(blob->data + head_ofs, len1);
head_ofs += len1;
break;
case 'd':
v = va_arg(ap, uint32 *);
NEED_DATA(4);
*v = IVAL(blob->data, head_ofs); head_ofs += 4;
break;
case 'C':
s = va_arg(ap, char *);
head_ofs += pull_string(NULL, p, blob->data+head_ofs, sizeof(p),
blob->length - head_ofs,
STR_ASCII|STR_TERMINATE);
if (strcmp(s, p) != 0) {
return False;
}
break;
}
}
va_end(ap);
return True;
}
/**
* Print out the NTLMSSP flags for debugging
*/
void debug_ntlmssp_flags(uint32 neg_flags)
{
DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
if (neg_flags & NTLMSSP_REQUEST_TARGET)
DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_LM_KEY\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
DEBUGADD(4, (" NTLMSSP_CHAL_TARGET_INFO\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_128)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_128\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
}

43
source3/libsmb/ntlmssp.c
View File

@ -23,12 +23,53 @@
#include "includes.h"
/**
* Print out the NTLMSSP flags for debugging
*/
void debug_ntlmssp_flags(uint32 neg_flags)
{
DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
if (neg_flags & NTLMSSP_REQUEST_TARGET)
DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_LM_KEY\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
DEBUGADD(4, (" NTLMSSP_CHAL_TARGET_INFO\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_128)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_128\n"));
if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
}
/**
* Default challenge generation code.
*
*/
static const uint8 *get_challenge(struct ntlmssp_state *ntlmssp_state)
{
static uchar chal[8];

303
source3/libsmb/ntlmssp_parse.c Normal file
View File

@ -0,0 +1,303 @@
/*
Unix SMB/CIFS implementation.
simple kerberos5/SPNEGO routines
Copyright (C) Andrew Tridgell 2001
Copyright (C) Jim McDonough 2002
Copyright (C) Andrew Bartlett 2002-2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
/*
this is a tiny msrpc packet generator. I am only using this to
avoid tying this code to a particular varient of our rpc code. This
generator is not general enough for all our rpc needs, its just
enough for the spnego/ntlmssp code
format specifiers are:
U = unicode string (input is unix string)
a = address (input is BOOL unicode, char *unix_string)
(1 byte type, 1 byte length, unicode/ASCII string, all inline)
A = ASCII string (input is unix string)
B = data blob (pointer + length)
b = data blob in header (pointer + length)
D
d = word (4 bytes)
C = constant ascii string
*/
BOOL msrpc_gen(DATA_BLOB *blob,
const char *format, ...)
{
int i, n;
va_list ap;
char *s;
uint8 *b;
int head_size=0, data_size=0;
int head_ofs, data_ofs;
BOOL unicode;
/* first scan the format to work out the header and body size */
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
s = va_arg(ap, char *);
head_size += 8;
data_size += str_charnum(s) * 2;
break;
case 'A':
s = va_arg(ap, char *);
head_size += 8;
data_size += str_ascii_charnum(s);
break;
case 'a':
unicode = va_arg(ap, BOOL);
n = va_arg(ap, int);
s = va_arg(ap, char *);
if (unicode) {
data_size += (str_charnum(s) * 2) + 4;
} else {
data_size += (str_ascii_charnum(s)) + 4;
}
break;
case 'B':
b = va_arg(ap, uint8 *);
head_size += 8;
data_size += va_arg(ap, int);
break;
case 'b':
b = va_arg(ap, uint8 *);
head_size += va_arg(ap, int);
break;
case 'd':
n = va_arg(ap, int);
head_size += 4;
break;
case 'C':
s = va_arg(ap, char *);
head_size += str_charnum(s) + 1;
break;
}
}
va_end(ap);
/* allocate the space, then scan the format again to fill in the values */
*blob = data_blob(NULL, head_size + data_size);
head_ofs = 0;
data_ofs = head_size;
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
s = va_arg(ap, char *);
n = str_charnum(s);
SSVAL(blob->data, head_ofs, n*2); head_ofs += 2;
SSVAL(blob->data, head_ofs, n*2); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
push_string(NULL, blob->data+data_ofs, s, n*2, STR_UNICODE|STR_NOALIGN);
data_ofs += n*2;
break;
case 'A':
s = va_arg(ap, char *);
n = str_ascii_charnum(s);
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
push_string(NULL, blob->data+data_ofs, s, n, STR_ASCII|STR_NOALIGN);
data_ofs += n;
break;
case 'a':
unicode = va_arg(ap, BOOL);
n = va_arg(ap, int);
SSVAL(blob->data, data_ofs, n); data_ofs += 2;
s = va_arg(ap, char *);
if (unicode) {
n = str_charnum(s);
SSVAL(blob->data, data_ofs, n*2); data_ofs += 2;
if (0 < n) {
push_string(NULL, blob->data+data_ofs, s, n*2,
STR_UNICODE|STR_NOALIGN);
}
data_ofs += n*2;
} else {
n = str_ascii_charnum(s);
SSVAL(blob->data, data_ofs, n); data_ofs += 2;
if (0 < n) {
push_string(NULL, blob->data+data_ofs, s, n,
STR_ASCII|STR_NOALIGN);
}
data_ofs += n;
}
break;
case 'B':
b = va_arg(ap, uint8 *);
n = va_arg(ap, int);
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SSVAL(blob->data, head_ofs, n); head_ofs += 2;
SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
memcpy(blob->data+data_ofs, b, n);
data_ofs += n;
break;
case 'd':
n = va_arg(ap, int);
SIVAL(blob->data, head_ofs, n); head_ofs += 4;
break;
case 'b':
b = va_arg(ap, uint8 *);
n = va_arg(ap, int);
memcpy(blob->data + head_ofs, b, n);
head_ofs += n;
break;
case 'C':
s = va_arg(ap, char *);
head_ofs += push_string(NULL, blob->data+head_ofs, s, -1,
STR_ASCII|STR_TERMINATE);
break;
}
}
va_end(ap);
return True;
}
/* a helpful macro to avoid running over the end of our blob */
#define NEED_DATA(amount) \
if (head_ofs + amount > blob->length) { \
return False; \
}
/*
this is a tiny msrpc packet parser. This the the partner of msrpc_gen
format specifiers are:
U = unicode string (output is unix string)
A = ascii string
B = data blob
b = data blob in header
d = word (4 bytes)
C = constant ascii string
*/
BOOL msrpc_parse(DATA_BLOB *blob,
const char *format, ...)
{
int i;
va_list ap;
char **ps, *s;
DATA_BLOB *b;
int head_ofs = 0;
uint16 len1, len2;
uint32 ptr;
uint32 *v;
pstring p;
va_start(ap, format);
for (i=0; format[i]; i++) {
switch (format[i]) {
case 'U':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
if (len1 & 1) {
/* if odd length and unicode */
return False;
}
ps = va_arg(ap, char **);
if (0 < len1) {
pull_string(NULL, p, blob->data + ptr, sizeof(p),
len1,
STR_UNICODE|STR_NOALIGN);
(*ps) = strdup(p);
} else {
(*ps) = NULL;
}
break;
case 'A':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
ps = va_arg(ap, char **);
if (0 < len1) {
pull_string(NULL, p, blob->data + ptr, sizeof(p),
len1,
STR_ASCII|STR_NOALIGN);
(*ps) = strdup(p);
} else {
(*ps) = NULL;
}
break;
case 'B':
NEED_DATA(8);
len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
/* make sure its in the right format - be strict */
if (len1 != len2 || ptr + len1 > blob->length) {
return False;
}
b = (DATA_BLOB *)va_arg(ap, void *);
*b = data_blob(blob->data + ptr, len1);
break;
case 'b':
b = (DATA_BLOB *)va_arg(ap, void *);
len1 = va_arg(ap, unsigned);
/* make sure its in the right format - be strict */
NEED_DATA(len1);
*b = data_blob(blob->data + head_ofs, len1);
head_ofs += len1;
break;
case 'd':
v = va_arg(ap, uint32 *);
NEED_DATA(4);
*v = IVAL(blob->data, head_ofs); head_ofs += 4;
break;
case 'C':
s = va_arg(ap, char *);
head_ofs += pull_string(NULL, p, blob->data+head_ofs, sizeof(p),
blob->length - head_ofs,
STR_ASCII|STR_TERMINATE);
if (strcmp(s, p) != 0) {
return False;
}
break;
}
}
va_end(ap);
return True;
}