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Commits
1e3172fb
Commit
1e3172fb
authored
Mar 16, 2018
by
Eric Stutzenberger
Committed by
Kevin
Mar 16, 2018
Browse files
scan full advertising packet for UUIDs (#16)
parent
1dd6d60a
Changes
1
Hide whitespace changes
Inline
Side-by-side
linux/adv/packet.go
View file @
1e3172fb
...
@@ -185,6 +185,47 @@ func (p *Packet) Field(typ byte) []byte {
...
@@ -185,6 +185,47 @@ func (p *Packet) Field(typ byte) []byte {
return
nil
return
nil
}
}
func
(
p
*
Packet
)
getUUIDsByType
(
typ
byte
,
u
[]
ble
.
UUID
,
w
int
)
[]
ble
.
UUID
{
pos
:=
0
var
b
[]
byte
for
pos
<
len
(
p
.
b
)
{
if
b
,
pos
=
p
.
fieldPos
(
typ
,
pos
);
b
!=
nil
{
u
=
uuidList
(
u
,
b
,
w
)
}
}
return
u
}
func
(
p
*
Packet
)
fieldPos
(
typ
byte
,
offset
int
)
([]
byte
,
int
)
{
if
offset
>=
len
(
p
.
b
)
{
return
nil
,
len
(
p
.
b
)
}
b
:=
p
.
b
[
offset
:
]
pos
:=
offset
if
len
(
b
)
<
2
{
return
nil
,
pos
+
len
(
b
)
}
for
len
(
b
)
>
0
{
l
,
t
:=
b
[
0
],
b
[
1
]
if
int
(
l
)
<
1
||
len
(
b
)
<
int
(
1
+
l
)
{
return
nil
,
pos
}
if
t
==
typ
{
r
:=
b
[
2
:
2
+
l
-
1
]
return
r
,
pos
+
1
+
int
(
l
)
}
b
=
b
[
1
+
l
:
]
pos
+=
1
+
int
(
l
)
if
len
(
b
)
<
2
{
break
}
}
return
nil
,
pos
}
// Flags returns the flags of the packet.
// Flags returns the flags of the packet.
func
(
p
*
Packet
)
Flags
()
(
flags
byte
,
present
bool
)
{
func
(
p
*
Packet
)
Flags
()
(
flags
byte
,
present
bool
)
{
b
:=
p
.
Field
(
flags
)
b
:=
p
.
Field
(
flags
)
...
@@ -214,24 +255,12 @@ func (p *Packet) TxPower() (power int, present bool) {
...
@@ -214,24 +255,12 @@ func (p *Packet) TxPower() (power int, present bool) {
// UUIDs returns a list of service UUIDs.
// UUIDs returns a list of service UUIDs.
func
(
p
*
Packet
)
UUIDs
()
[]
ble
.
UUID
{
func
(
p
*
Packet
)
UUIDs
()
[]
ble
.
UUID
{
var
u
[]
ble
.
UUID
var
u
[]
ble
.
UUID
if
b
:=
p
.
Field
(
someUUID16
);
b
!=
nil
{
u
=
p
.
getUUIDsByType
(
someUUID16
,
u
,
2
)
u
=
uuidList
(
u
,
b
,
2
)
u
=
p
.
getUUIDsByType
(
allUUID16
,
u
,
2
)
}
u
=
p
.
getUUIDsByType
(
someUUID32
,
u
,
4
)
if
b
:=
p
.
Field
(
allUUID16
);
b
!=
nil
{
u
=
p
.
getUUIDsByType
(
allUUID32
,
u
,
4
)
u
=
uuidList
(
u
,
b
,
2
)
u
=
p
.
getUUIDsByType
(
someUUID128
,
u
,
16
)
}
u
=
p
.
getUUIDsByType
(
allUUID128
,
u
,
16
)
if
b
:=
p
.
Field
(
someUUID32
);
b
!=
nil
{
u
=
uuidList
(
u
,
b
,
4
)
}
if
b
:=
p
.
Field
(
allUUID32
);
b
!=
nil
{
u
=
uuidList
(
u
,
b
,
4
)
}
if
b
:=
p
.
Field
(
someUUID128
);
b
!=
nil
{
u
=
uuidList
(
u
,
b
,
16
)
}
if
b
:=
p
.
Field
(
allUUID128
);
b
!=
nil
{
u
=
uuidList
(
u
,
b
,
16
)
}
return
u
return
u
}
}
...
...
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