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Diffstat (limited to 'source3/libsmb/clispnego.c')
-rw-r--r--source3/libsmb/clispnego.c124
1 files changed, 60 insertions, 64 deletions
diff --git a/source3/libsmb/clispnego.c b/source3/libsmb/clispnego.c
index 3e28baa417..55f49c5987 100644
--- a/source3/libsmb/clispnego.c
+++ b/source3/libsmb/clispnego.c
@@ -387,6 +387,51 @@ BOOL spnego_parse_challenge(DATA_BLOB blob,
/*
+ generate a spnego NTLMSSP challenge packet given two security blobs
+ The second challenge is optional
+*/
+BOOL spnego_gen_challenge(DATA_BLOB *blob,
+ DATA_BLOB *chal1, DATA_BLOB *chal2)
+{
+ ASN1_DATA data;
+
+ ZERO_STRUCT(data);
+
+ asn1_push_tag(&data,ASN1_CONTEXT(1));
+ asn1_push_tag(&data,ASN1_SEQUENCE(0));
+
+ asn1_push_tag(&data,ASN1_CONTEXT(0));
+ asn1_write_enumerated(&data,1);
+ asn1_pop_tag(&data);
+
+ asn1_push_tag(&data,ASN1_CONTEXT(1));
+ asn1_write_OID(&data, OID_NTLMSSP);
+ asn1_pop_tag(&data);
+
+ asn1_push_tag(&data,ASN1_CONTEXT(2));
+ asn1_write_OctetString(&data, chal1->data, chal1->length);
+ asn1_pop_tag(&data);
+
+ /* the second challenge is optional (XP doesn't send it) */
+ if (chal2) {
+ asn1_push_tag(&data,ASN1_CONTEXT(3));
+ asn1_write_OctetString(&data, chal2->data, chal2->length);
+ asn1_pop_tag(&data);
+ }
+
+ asn1_pop_tag(&data);
+ asn1_pop_tag(&data);
+
+ if (data.has_error) {
+ return False;
+ }
+
+ *blob = data_blob(data.data, data.length);
+ asn1_free(&data);
+ return True;
+}
+
+/*
generate a SPNEGO NTLMSSP auth packet. This will contain the encrypted passwords
*/
DATA_BLOB spnego_gen_auth(DATA_BLOB blob)
@@ -440,37 +485,18 @@ BOOL spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth)
/*
generate a minimal SPNEGO NTLMSSP response packet. Doesn't contain much.
*/
-DATA_BLOB spnego_gen_auth_response(DATA_BLOB *ntlmssp_reply, NTSTATUS nt_status)
+DATA_BLOB spnego_gen_auth_response(void)
{
ASN1_DATA data;
DATA_BLOB ret;
- uint8 negResult;
-
- if (NT_STATUS_IS_OK(nt_status)) {
- negResult = SPNGEO_NEG_RESULT_ACCEPT;
- } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- negResult = SPNGEO_NEG_RESULT_INCOMPLETE;
- } else {
- negResult = SPNGEO_NEG_RESULT_REJECT;
- }
- ZERO_STRUCT(data);
+ memset(&data, 0, sizeof(data));
asn1_push_tag(&data, ASN1_CONTEXT(1));
asn1_push_tag(&data, ASN1_SEQUENCE(0));
asn1_push_tag(&data, ASN1_CONTEXT(0));
- asn1_write_enumerated(&data, negResult);
+ asn1_write_enumerated(&data, 0);
asn1_pop_tag(&data);
- if (negResult == SPNGEO_NEG_RESULT_INCOMPLETE) {
- asn1_push_tag(&data,ASN1_CONTEXT(1));
- asn1_write_OID(&data, OID_NTLMSSP);
- asn1_pop_tag(&data);
-
- asn1_push_tag(&data,ASN1_CONTEXT(2));
- asn1_write_OctetString(&data, ntlmssp_reply->data, ntlmssp_reply->length);
- asn1_pop_tag(&data);
- }
-
asn1_pop_tag(&data);
asn1_pop_tag(&data);
@@ -488,9 +514,8 @@ DATA_BLOB spnego_gen_auth_response(DATA_BLOB *ntlmssp_reply, NTSTATUS nt_status)
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)
+ a = address (1 byte type, 1 byte length, unicode string, all inline)
+ A = ASCII string (pointer + length) Actually same as B
B = data blob (pointer + length)
b = data blob in header (pointer + length)
D
@@ -506,7 +531,6 @@ BOOL msrpc_gen(DATA_BLOB *blob,
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);
@@ -517,21 +541,12 @@ BOOL msrpc_gen(DATA_BLOB *blob,
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;
- }
+ data_size += (str_charnum(s) * 2) + 4;
break;
+ case 'A':
case 'B':
b = va_arg(ap, uint8 *);
head_size += 8;
@@ -571,39 +586,20 @@ BOOL msrpc_gen(DATA_BLOB *blob,
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;
+ 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;
break;
+ case 'A':
case 'B':
b = va_arg(ap, uint8 *);
n = va_arg(ap, int);
@@ -718,7 +714,7 @@ BOOL msrpc_parse(DATA_BLOB *blob,
break;
case 'C':
s = va_arg(ap, char *);
- head_ofs += pull_string(NULL, p, blob->data+head_ofs, sizeof(p),
+ head_ofs += pull_string(NULL, p, blob->data+head_ofs, -1,
blob->length - head_ofs,
STR_ASCII|STR_TERMINATE);
if (strcmp(s, p) != 0) {
generated by cgit (git 2.34.1) at 2024-07-14 15:50:58 +0000