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Add fingerprint support for the Mares Nemo.

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This commit is contained in:
Jef Driesen 2009-03-04 12:49:33 +00:00
parent 3885e69079
commit 731eaa2ce6
2 changed files with 38 additions and 4 deletions
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40
src/mares_nemo.c
View File

@ -39,6 +39,8 @@
rc == -1 ? DEVICE_STATUS_IO : DEVICE_STATUS_TIMEOUT \
)
#define FP_OFFSET 8
#define FP_SIZE 5
#define RB_PROFILE_BEGIN 0x0070
#define RB_PROFILE_END 0x3400
@ -50,15 +52,17 @@ typedef struct mares_nemo_device_t mares_nemo_device_t;
struct mares_nemo_device_t {
device_t base;
struct serial *port;
unsigned char fingerprint[FP_SIZE];
};
static device_status_t mares_nemo_device_set_fingerprint (device_t *abstract, const unsigned char data[], unsigned int size);
static device_status_t mares_nemo_device_dump (device_t *abstract, unsigned char data[], unsigned int size, unsigned int *result);
static device_status_t mares_nemo_device_foreach (device_t *abstract, dive_callback_t callback, void *userdata);
static device_status_t mares_nemo_device_close (device_t *abstract);
static const device_backend_t mares_nemo_device_backend = {
DEVICE_TYPE_MARES_NEMO,
NULL, /* set_fingerprint */
mares_nemo_device_set_fingerprint, /* set_fingerprint */
NULL, /* handshake */
NULL, /* version */
NULL, /* read */
@ -96,6 +100,7 @@ mares_nemo_device_open (device_t **out, const char* name)
// Set the default values.
device->port = NULL;
memset (device->fingerprint, 0, FP_SIZE);
// Open the device.
int rc = serial_open (&device->port, name);
@ -158,6 +163,26 @@ mares_nemo_device_close (device_t *abstract)
}
static device_status_t
mares_nemo_device_set_fingerprint (device_t *abstract, const unsigned char data[], unsigned int size)
{
mares_nemo_device_t *device = (mares_nemo_device_t*) abstract;
if (! device_is_mares_nemo (abstract))
return DEVICE_STATUS_TYPE_MISMATCH;
if (size && size != FP_SIZE)
return DEVICE_STATUS_ERROR;
if (size)
memcpy (device->fingerprint, data, FP_SIZE);
else
memset (device->fingerprint, 0, FP_SIZE);
return DEVICE_STATUS_SUCCESS;
}
static device_status_t
mares_nemo_device_dump (device_t *abstract, unsigned char data[], unsigned int size, unsigned int *result)
{
@ -256,13 +281,18 @@ mares_nemo_device_foreach (device_t *abstract, dive_callback_t callback, void *u
if (rc != DEVICE_STATUS_SUCCESS)
return rc;
return mares_nemo_extract_dives (data, sizeof (data), callback, userdata);
return mares_nemo_extract_dives (abstract, data, sizeof (data), callback, userdata);
}
device_status_t
mares_nemo_extract_dives (const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
mares_nemo_extract_dives (device_t *abstract, const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
{
mares_nemo_device_t *device = (mares_nemo_device_t *) abstract;
if (abstract && !device_is_mares_nemo (abstract))
return DEVICE_STATUS_TYPE_MISMATCH;
assert (size >= MARES_NEMO_MEMORY_SIZE);
// Get the end of the profile ring buffer.
@ -358,6 +388,10 @@ mares_nemo_extract_dives (const unsigned char data[], unsigned int size, dive_ca
nbytes += idx - RB_FREEDIVES_BEGIN;
}
unsigned int fp_offset = offset + length - FP_OFFSET;
if (device && memcmp (buffer + fp_offset, device->fingerprint, FP_SIZE) == 0)
return DEVICE_STATUS_SUCCESS;
if (callback && !callback (buffer + offset, nbytes, userdata))
return DEVICE_STATUS_SUCCESS;
}

2
src/mares_nemo.h
View File

@ -36,7 +36,7 @@ device_status_t
mares_nemo_device_open (device_t **device, const char* name);
device_status_t
mares_nemo_extract_dives (const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata);
mares_nemo_extract_dives (device_t *device, const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata);
parser_status_t
mares_nemo_parser_create (parser_t **parser);