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goodix: Read the header using byte reader

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Marco Trevisan (Treviño)
2025-02-13 21:14:26 +01:00
committed by Marco Trevisan
parent 7b97bed91f
commit 63b5908f38
3 changed files with 32 additions and 19 deletions
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10
libfprint/drivers/goodixmoc/goodix.c
View File

@@ -130,7 +130,7 @@ fp_cmd_receive_cb (FpiUsbTransfer *transfer,
FpiDeviceGoodixMoc *self = FPI_DEVICE_GOODIXMOC (device);
FpiByteReader reader = {0};
CommandData *data = user_data;
int ret = -1, ssm_state = 0;
int ssm_state = 0;
gxfp_cmd_response_t cmd_reponse = {0, };
pack_header header;
guint32 crc32_calc = 0;
@@ -156,8 +156,10 @@ fp_cmd_receive_cb (FpiUsbTransfer *transfer,
return;
}
ret = gx_proto_parse_header (transfer->buffer, transfer->actual_length, &header);
if (ret != 0)
reader.data = transfer->buffer;
reader.size = transfer->actual_length;
if (gx_proto_parse_header (&reader, &header) != 0)
{
fpi_ssm_mark_failed (transfer->ssm,
fpi_device_error_new_msg (FP_DEVICE_ERROR_PROTO,
@@ -165,8 +167,6 @@ fp_cmd_receive_cb (FpiUsbTransfer *transfer,
return;
}
reader.data = transfer->buffer;
reader.size = transfer->actual_length;
if (!fpi_byte_reader_set_pos (&reader, PACKAGE_HEADER_SIZE + header.len))
{
fpi_ssm_mark_failed (transfer->ssm,

36
libfprint/drivers/goodixmoc/goodix_proto.c
View File

@@ -226,21 +226,35 @@ gx_proto_build_package (uint8_t *ppackage,
int
gx_proto_parse_header (
uint8_t *buffer,
uint32_t buffer_len,
pack_header *pheader)
gx_proto_parse_header (FpiByteReader *reader,
pack_header *pheader)
{
if (!buffer || !pheader)
return -1;
if (buffer_len < PACKAGE_HEADER_SIZE + PACKAGE_CRC_SIZE)
if (!pheader)
return -1;
memcpy (pheader, buffer, sizeof (pack_header));
pheader->len = GUINT16_FROM_LE (pheader->len);
if (buffer_len < pheader->len + PACKAGE_HEADER_SIZE)
return -1;
if (!fpi_byte_reader_get_uint8 (reader, &pheader->cmd0))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint8 (reader, &pheader->cmd1))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint8 (reader, &pheader->packagenum))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint8 (reader, &pheader->reserved))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint16_le (reader, &pheader->len))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint8 (reader, &pheader->crc8))
g_return_val_if_reached (-1);
if (!fpi_byte_reader_get_uint8 (reader, &pheader->rev_crc8))
g_return_val_if_reached (-1);
pheader->len -= PACKAGE_CRC_SIZE;
return 0;
}

5
libfprint/drivers/goodixmoc/goodix_proto.h
View File

@@ -234,9 +234,8 @@ int gx_proto_build_package (uint8_t *ppackage,
const uint8_t *payload,
uint32_t payload_size);
int gx_proto_parse_header (uint8_t *buffer,
uint32_t buffer_len,
pack_header *pheader);
int gx_proto_parse_header (FpiByteReader *reader,
pack_header *pheader);
int gx_proto_parse_body (uint16_t cmd,
FpiByteReader *byte_reader,