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uru4000: Use GLib's random functions

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So we can set a static seed when running tests.
This commit is contained in:
Bastien Nocera 2020-12-04 16:25:06 +01:00 committed by Benjamin Berg
parent a267e30fc6
commit 4ef13d971d
1 changed files with 11 additions and 2 deletions
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13
libfprint/drivers/uru4000.c
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@ -131,6 +131,7 @@ struct _FpiDeviceUru4000
void *img_data;
int img_data_actual_length;
uint16_t img_lines_done, img_block;
GRand *rand;
uint32_t img_enc_seed;
irq_cb_fn irq_cb;
@ -722,7 +723,8 @@ imaging_run_state (FpiSsm *ssm, FpDevice *_dev)
fp_dbg ("changing encryption keys.");
img->block_info[self->img_block].flags &= ~BLOCKF_CHANGE_KEY;
img->key_number++;
self->img_enc_seed = rand ();
self->img_enc_seed = g_rand_int_range (self->rand, 0, RAND_MAX);
fp_dbg ("New image encryption seed: %d", self->img_enc_seed);
fpi_ssm_jump_to_state (ssm, IMAGING_SEND_INDEX);
return;
}
@ -1219,7 +1221,8 @@ execute_state_change (FpImageDevice *dev)
ssm = fpi_ssm_new (FP_DEVICE (dev), imaging_run_state,
IMAGING_NUM_STATES);
self->img_enc_seed = rand ();
self->img_enc_seed = g_rand_int_range (self->rand, 0, RAND_MAX);
fp_dbg ("Image encryption seed: %d", self->img_enc_seed);
self->img_transfer = fpi_usb_transfer_new (FP_DEVICE (dev));
self->img_transfer->ssm = ssm;
self->img_transfer->short_is_error = FALSE;
@ -1355,6 +1358,11 @@ dev_init (FpImageDevice *dev)
self = FPI_DEVICE_URU4000 (dev);
g_clear_pointer (&self->rand, g_rand_free);
self->rand = g_rand_new ();
if (g_strcmp0 (g_getenv ("FP_DEVICE_EMULATION"), "1") == 0)
g_rand_set_seed (self->rand, 0xFACADE);
driver_data = fpi_device_get_driver_data (FP_DEVICE (dev));
self->profile = &uru4k_dev_info[driver_data];
self->interface = g_usb_interface_get_number (iface);
@ -1407,6 +1415,7 @@ dev_deinit (FpImageDevice *dev)
PK11_FreeSlot (self->slot);
g_usb_device_release_interface (fpi_device_get_usb_device (FP_DEVICE (dev)),
self->interface, 0, &error);
g_clear_pointer (&self->rand, g_rand_free);
fpi_image_device_close_complete (dev, error);
}