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core: add more C interfaces for fingerprint table

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These are used to read/write fingerprint records as git or XML data from
C code.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2021-10-30 13:23:47 -07:00
parent 02c770d997
commit 33527cb9e5
2 changed files with 61 additions and 0 deletions
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51
core/device.cpp
View file

@ -252,3 +252,54 @@ extern "C" void create_fingerprint_node(struct fingerprint_table *table, uint32_
table->fingerprints.insert(it, fpr);
}
}
extern "C" void create_fingerprint_node_from_hex(struct fingerprint_table *table, uint32_t model, uint32_t serial,
const char *hex_data, uint32_t fdeviceid, uint32_t fdiveid)
{
QByteArray raw = QByteArray::fromHex(hex_data);
create_fingerprint_node(table, model, serial,
(const unsigned char *)raw.constData(), raw.size(), fdeviceid, fdiveid);
}
extern "C" int nr_fingerprints(struct fingerprint_table *table)
{
return table->fingerprints.size();
}
extern "C" uint32_t fp_get_model(struct fingerprint_table *table, unsigned int i)
{
if (!table || i >= table->fingerprints.size())
return 0;
return table->fingerprints[i].model;
}
extern "C" uint32_t fp_get_serial(struct fingerprint_table *table, unsigned int i)
{
if (!table || i >= table->fingerprints.size())
return 0;
return table->fingerprints[i].serial;
}
extern "C" uint32_t fp_get_deviceid(struct fingerprint_table *table, unsigned int i)
{
if (!table || i >= table->fingerprints.size())
return 0;
return table->fingerprints[i].fdeviceid;
}
extern "C" uint32_t fp_get_diveid(struct fingerprint_table *table, unsigned int i)
{
if (!table || i >= table->fingerprints.size())
return 0;
return table->fingerprints[i].fdiveid;
}
extern "C" char *fp_get_data(struct fingerprint_table *table, unsigned int i)
{
if (!table || i >= table->fingerprints.size())
return 0;
struct fingerprint_record *fpr = &table->fingerprints[i];
// fromRawData() avoids one copy of the raw_data
QByteArray hex = QByteArray::fromRawData((char *)fpr->raw_data, fpr->fsize).toHex();
return strdup(hex.constData());
}

10
core/device.h
View file

@ -44,9 +44,19 @@ extern void free_device_table(struct device_table *devices);
// create fingerprint entry - raw data remains owned by caller
extern void create_fingerprint_node(struct fingerprint_table *table, uint32_t model, uint32_t serial,
const unsigned char *raw_data, unsigned int fsize, uint32_t fdeviceid, uint32_t fdiveid);
extern void create_fingerprint_node_from_hex(struct fingerprint_table *table, uint32_t model, uint32_t serial,
const char *hex_data, uint32_t fdeviceid, uint32_t fdiveid);
// look up the fingerprint for model/serial - returns the number of bytes in the fingerprint; memory owned by the table
extern unsigned int get_fingerprint_data(const struct fingerprint_table *table, uint32_t model, uint32_t serial, const unsigned char **fp_out);
// access the fingerprint data from C
extern int nr_fingerprints(struct fingerprint_table *table);
extern uint32_t fp_get_model(struct fingerprint_table *table, unsigned int i);
extern uint32_t fp_get_serial(struct fingerprint_table *table, unsigned int i);
extern uint32_t fp_get_deviceid(struct fingerprint_table *table, unsigned int i);
extern uint32_t fp_get_diveid(struct fingerprint_table *table, unsigned int i);
extern char *fp_get_data(struct fingerprint_table *table, unsigned int i);
#ifdef __cplusplus
}
#endif