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update packet forging

merge-requests/569/head
Benoit Juin 2022-11-26 07:14:45 +01:00
rodzic a44127d1bc
commit e6cb0cf07e
1 zmienionych plików z 23 dodań i 14 usunięć
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37
backend/lexmark_x2600.c
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@ -94,20 +94,28 @@ build_packet(Lexmark_Device * dev, SANE_Byte packet_id, SANE_Byte * buffer){
memcpy(buffer, command_with_params_block, command_with_params_block_size);
// protocole related... "ID?"
buffer[14] = packet_id;
// mode
buffer[20] = 0x02;
// pixel width
buffer[24] = 0xF0;
buffer[25] = 0x00;
// pixel height
buffer[28] = 0xF0;
buffer[29] = 0x00;
// dpi x
buffer[40] = 0xC8;
buffer[41] = 0x00;
// dpi y
buffer[42] = 0xC8;
buffer[43] = 0x00;
if (memcmp(dev->val[OPT_MODE].s, "Color", 5) == 0 )
buffer[20] = 0x03;
else
buffer[20] = 0x02;
// pixel width (swap lower byte -> higher byte)
buffer[24] = dev->val[OPT_BR_X].w & 0xFF;
buffer[25] = (dev->val[OPT_BR_X].w >> 8) & 0xFF;
// pixel height (swap lower byte -> higher byte)
buffer[28] = dev->val[OPT_BR_X].w & 0xFF;
buffer[29] = (dev->val[OPT_BR_X].w >> 8) & 0xFF;
// dpi x (swap lower byte -> higher byte)
buffer[40] = dev->val[OPT_RESOLUTION].w & 0xFF;
buffer[41] = (dev->val[OPT_RESOLUTION].w >> 8) & 0xFF;
// dpi y (swap lower byte -> higher byte)
buffer[42] = dev->val[OPT_RESOLUTION].w & 0xFF;
buffer[43] = (dev->val[OPT_RESOLUTION].w >> 8) & 0xFF;
}
SANE_Status
@ -658,7 +666,8 @@ sane_start (SANE_Handle handle)
DBG (2, "sane_start: cmd=%p\n", cmd);
status = usb_write_then_read(lexmark_device, cmd, command_with_params_block_size);
if (status != SANE_STATUS_GOOD)
return status;
return status;
build_packet(lexmark_device, 0x01, cmd);;
status = usb_write_then_read(lexmark_device, cmd, command_with_params_block_size);
if (status != SANE_STATUS_GOOD)