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librpc/rpc: add dcerpc_[extract|construct]_bind_time_features()

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Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
This commit is contained in:
Stefan Metzmacher 2014-01-09 12:35:58 +01:00 committed by Günther Deschner
parent 18dce19ef9
commit e1498ac674
2 changed files with 93 additions and 0 deletions
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63
librpc/rpc/dcerpc_util.c
View File

@ -652,3 +652,66 @@ bool dcerpc_sec_verification_trailer_check(
return true;
}
static const struct ndr_syntax_id dcerpc_bind_time_features_prefix = {
.uuid = {
.time_low = 0x6cb71c2c,
.time_mid = 0x9812,
.time_hi_and_version = 0x4540,
.clock_seq = {0x00, 0x00},
.node = {0x00,0x00,0x00,0x00,0x00,0x00}
},
.if_version = 1,
};
bool dcerpc_extract_bind_time_features(struct ndr_syntax_id s, uint64_t *_features)
{
uint8_t values[8];
uint64_t features = 0;
values[0] = s.uuid.clock_seq[0];
values[1] = s.uuid.clock_seq[1];
values[2] = s.uuid.node[0];
values[3] = s.uuid.node[1];
values[4] = s.uuid.node[2];
values[5] = s.uuid.node[3];
values[6] = s.uuid.node[4];
values[7] = s.uuid.node[5];
ZERO_STRUCT(s.uuid.clock_seq);
ZERO_STRUCT(s.uuid.node);
if (!ndr_syntax_id_equal(&s, &dcerpc_bind_time_features_prefix)) {
if (_features != NULL) {
*_features = 0;
}
return false;
}
features = BVAL(values, 0);
if (_features != NULL) {
*_features = features;
}
return true;
}
struct ndr_syntax_id dcerpc_construct_bind_time_features(uint64_t features)
{
struct ndr_syntax_id s = dcerpc_bind_time_features_prefix;
uint8_t values[8];
SBVAL(values, 0, features);
s.uuid.clock_seq[0] = values[0];
s.uuid.clock_seq[1] = values[1];
s.uuid.node[0] = values[2];
s.uuid.node[1] = values[3];
s.uuid.node[2] = values[4];
s.uuid.node[3] = values[5];
s.uuid.node[4] = values[6];
s.uuid.node[5] = values[7];
return s;
}

30
librpc/rpc/rpc_common.h
View File

@ -373,6 +373,36 @@ bool dcerpc_sec_verification_trailer_check(
const struct dcerpc_sec_vt_pcontext *pcontext,
const struct dcerpc_sec_vt_header2 *header2);
/**
* @brief check and optionally extract the Bind Time Features from
* the given ndr_syntax_id.
*
* <a href="http://msdn.microsoft.com/en-us/library/cc243715.aspx">MS-RPCE 3.3.1.5.3 Bind Time Feature Negotiation</a>.
*
* @param[in] s the syntax that should be checked.
*
* @param[out] features This is optional, it will be filled with the extracted
* features the on success, otherwise it's filled with 0.
*
* @return true if the syntax matches the 6CB71C2C-9812-4540 prefix with version 1, false otherwise.
*
* @see dcerpc_construct_bind_time_features
*/
bool dcerpc_extract_bind_time_features(struct ndr_syntax_id syntax, uint64_t *features);
/**
* @brief Construct a ndr_syntax_id used for Bind Time Features Negotiation.
*
* <a href="http://msdn.microsoft.com/en-us/library/cc243715.aspx">MS-RPCE 3.3.1.5.3 Bind Time Feature Negotiation</a>.
*
* @param[in] features The supported features.
*
* @return The ndr_syntax_id with the given features.
*
* @see dcerpc_extract_bind_time_features
*/
struct ndr_syntax_id dcerpc_construct_bind_time_features(uint64_t features);
#define DCERPC_AUTH_PAD_LENGTH(stub_length) (\
(((stub_length) % DCERPC_AUTH_PAD_ALIGNMENT) > 0)?\
(DCERPC_AUTH_PAD_ALIGNMENT - (stub_length) % DCERPC_AUTH_PAD_ALIGNMENT):\