Check message size too when figuring whenever we should expect more data. Fix debug message to show useful data, p->iov.size is fixed anyway if we land there, print how much we got meanwhile instead. Also check announced message size against actual message size. That is a more general fix for CVE-2017-5898 than commit "c7dfbf3 usb: ccid: check ccid apdu length". Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 1487250819-23764-4-git-send-email-kraxel@redhat.com
1519 lines
47 KiB
C
1519 lines
47 KiB
C
/*
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* CCID Device emulation
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*
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* Written by Alon Levy, with contributions from Robert Relyea.
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*
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* Based on usb-serial.c, see its copyright and attributions below.
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*
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* This work is licensed under the terms of the GNU GPL, version 2.1 or later.
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* See the COPYING file in the top-level directory.
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* ------- (original copyright & attribution for usb-serial.c below) --------
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* Copyright (c) 2006 CodeSourcery.
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* Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
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* Written by Paul Brook, reused for FTDI by Samuel Thibault,
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*/
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/*
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* References:
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*
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* CCID Specification Revision 1.1 April 22nd 2005
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* "Universal Serial Bus, Device Class: Smart Card"
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* Specification for Integrated Circuit(s) Cards Interface Devices
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*
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* Endianness note: from the spec (1.3)
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* "Fields that are larger than a byte are stored in little endian"
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*
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* KNOWN BUGS
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* 1. remove/insert can sometimes result in removed state instead of inserted.
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* This is a result of the following:
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* symptom: dmesg shows ERMOTEIO (-121), pcscd shows -99. This can happen
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* when a short packet is sent, as seen in uhci-usb.c, resulting from a urb
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* from the guest requesting SPD and us returning a smaller packet.
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* Not sure which messages trigger this.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "qemu/error-report.h"
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#include "hw/usb.h"
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#include "hw/usb/desc.h"
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#include "ccid.h"
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#define DPRINTF(s, lvl, fmt, ...) \
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do { \
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if (lvl <= s->debug) { \
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printf("usb-ccid: " fmt , ## __VA_ARGS__); \
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} \
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} while (0)
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#define D_WARN 1
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#define D_INFO 2
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#define D_MORE_INFO 3
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#define D_VERBOSE 4
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#define CCID_DEV_NAME "usb-ccid"
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#define USB_CCID_DEV(obj) OBJECT_CHECK(USBCCIDState, (obj), CCID_DEV_NAME)
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/*
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* The two options for variable sized buffers:
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* make them constant size, for large enough constant,
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* or handle the migration complexity - VMState doesn't handle this case.
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* sizes are expected never to be exceeded, unless guest misbehaves.
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*/
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#define BULK_OUT_DATA_SIZE 65536
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#define PENDING_ANSWERS_NUM 128
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#define BULK_IN_BUF_SIZE 384
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#define BULK_IN_PENDING_NUM 8
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#define CCID_MAX_PACKET_SIZE 64
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#define CCID_CONTROL_ABORT 0x1
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#define CCID_CONTROL_GET_CLOCK_FREQUENCIES 0x2
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#define CCID_CONTROL_GET_DATA_RATES 0x3
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#define CCID_PRODUCT_DESCRIPTION "QEMU USB CCID"
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#define CCID_VENDOR_DESCRIPTION "QEMU"
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#define CCID_INTERFACE_NAME "CCID Interface"
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#define CCID_SERIAL_NUMBER_STRING "1"
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/*
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* Using Gemplus Vendor and Product id
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* Effect on various drivers:
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* usbccid.sys (winxp, others untested) is a class driver so it doesn't care.
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* linux has a number of class drivers, but openct filters based on
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* vendor/product (/etc/openct.conf under fedora), hence Gemplus.
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*/
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#define CCID_VENDOR_ID 0x08e6
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#define CCID_PRODUCT_ID 0x4433
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#define CCID_DEVICE_VERSION 0x0000
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/*
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* BULK_OUT messages from PC to Reader
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* Defined in CCID Rev 1.1 6.1 (page 26)
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*/
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#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn 0x62
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#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff 0x63
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#define CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus 0x65
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#define CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock 0x6f
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#define CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters 0x6c
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#define CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters 0x6d
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#define CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters 0x61
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#define CCID_MESSAGE_TYPE_PC_to_RDR_Escape 0x6b
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#define CCID_MESSAGE_TYPE_PC_to_RDR_IccClock 0x6e
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#define CCID_MESSAGE_TYPE_PC_to_RDR_T0APDU 0x6a
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#define CCID_MESSAGE_TYPE_PC_to_RDR_Secure 0x69
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#define CCID_MESSAGE_TYPE_PC_to_RDR_Mechanical 0x71
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#define CCID_MESSAGE_TYPE_PC_to_RDR_Abort 0x72
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#define CCID_MESSAGE_TYPE_PC_to_RDR_SetDataRateAndClockFrequency 0x73
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/*
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* BULK_IN messages from Reader to PC
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* Defined in CCID Rev 1.1 6.2 (page 48)
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*/
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#define CCID_MESSAGE_TYPE_RDR_to_PC_DataBlock 0x80
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#define CCID_MESSAGE_TYPE_RDR_to_PC_SlotStatus 0x81
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#define CCID_MESSAGE_TYPE_RDR_to_PC_Parameters 0x82
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#define CCID_MESSAGE_TYPE_RDR_to_PC_Escape 0x83
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#define CCID_MESSAGE_TYPE_RDR_to_PC_DataRateAndClockFrequency 0x84
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/*
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* INTERRUPT_IN messages from Reader to PC
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* Defined in CCID Rev 1.1 6.3 (page 56)
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*/
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#define CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange 0x50
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#define CCID_MESSAGE_TYPE_RDR_to_PC_HardwareError 0x51
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/*
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* Endpoints for CCID - addresses are up to us to decide.
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* To support slot insertion and removal we must have an interrupt in ep
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* in addition we need a bulk in and bulk out ep
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* 5.2, page 20
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*/
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#define CCID_INT_IN_EP 1
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#define CCID_BULK_IN_EP 2
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#define CCID_BULK_OUT_EP 3
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/* bmSlotICCState masks */
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#define SLOT_0_STATE_MASK 1
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#define SLOT_0_CHANGED_MASK 2
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/* Status codes that go in bStatus (see 6.2.6) */
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enum {
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ICC_STATUS_PRESENT_ACTIVE = 0,
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ICC_STATUS_PRESENT_INACTIVE,
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ICC_STATUS_NOT_PRESENT
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};
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enum {
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COMMAND_STATUS_NO_ERROR = 0,
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COMMAND_STATUS_FAILED,
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COMMAND_STATUS_TIME_EXTENSION_REQUIRED
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};
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/* Error codes that go in bError (see 6.2.6) */
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enum {
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ERROR_CMD_NOT_SUPPORTED = 0,
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ERROR_CMD_ABORTED = -1,
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ERROR_ICC_MUTE = -2,
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ERROR_XFR_PARITY_ERROR = -3,
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ERROR_XFR_OVERRUN = -4,
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ERROR_HW_ERROR = -5,
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};
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/* 6.2.6 RDR_to_PC_SlotStatus definitions */
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enum {
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CLOCK_STATUS_RUNNING = 0,
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/*
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* 0 - Clock Running, 1 - Clock stopped in State L, 2 - H,
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* 3 - unknown state. rest are RFU
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*/
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};
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typedef struct QEMU_PACKED CCID_Header {
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uint8_t bMessageType;
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uint32_t dwLength;
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uint8_t bSlot;
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uint8_t bSeq;
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} CCID_Header;
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typedef struct QEMU_PACKED CCID_BULK_IN {
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CCID_Header hdr;
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uint8_t bStatus; /* Only used in BULK_IN */
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uint8_t bError; /* Only used in BULK_IN */
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} CCID_BULK_IN;
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typedef struct QEMU_PACKED CCID_SlotStatus {
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CCID_BULK_IN b;
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uint8_t bClockStatus;
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} CCID_SlotStatus;
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typedef struct QEMU_PACKED CCID_T0ProtocolDataStructure {
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uint8_t bmFindexDindex;
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uint8_t bmTCCKST0;
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uint8_t bGuardTimeT0;
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uint8_t bWaitingIntegerT0;
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uint8_t bClockStop;
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} CCID_T0ProtocolDataStructure;
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typedef struct QEMU_PACKED CCID_T1ProtocolDataStructure {
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uint8_t bmFindexDindex;
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uint8_t bmTCCKST1;
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uint8_t bGuardTimeT1;
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uint8_t bWaitingIntegerT1;
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uint8_t bClockStop;
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uint8_t bIFSC;
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uint8_t bNadValue;
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} CCID_T1ProtocolDataStructure;
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typedef union CCID_ProtocolDataStructure {
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CCID_T0ProtocolDataStructure t0;
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CCID_T1ProtocolDataStructure t1;
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uint8_t data[7]; /* must be = max(sizeof(t0), sizeof(t1)) */
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} CCID_ProtocolDataStructure;
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typedef struct QEMU_PACKED CCID_Parameter {
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CCID_BULK_IN b;
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uint8_t bProtocolNum;
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CCID_ProtocolDataStructure abProtocolDataStructure;
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} CCID_Parameter;
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typedef struct QEMU_PACKED CCID_DataBlock {
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CCID_BULK_IN b;
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uint8_t bChainParameter;
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uint8_t abData[0];
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} CCID_DataBlock;
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/* 6.1.4 PC_to_RDR_XfrBlock */
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typedef struct QEMU_PACKED CCID_XferBlock {
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CCID_Header hdr;
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uint8_t bBWI; /* Block Waiting Timeout */
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uint16_t wLevelParameter; /* XXX currently unused */
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uint8_t abData[0];
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} CCID_XferBlock;
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typedef struct QEMU_PACKED CCID_IccPowerOn {
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CCID_Header hdr;
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uint8_t bPowerSelect;
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uint16_t abRFU;
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} CCID_IccPowerOn;
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typedef struct QEMU_PACKED CCID_IccPowerOff {
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CCID_Header hdr;
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uint16_t abRFU;
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} CCID_IccPowerOff;
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typedef struct QEMU_PACKED CCID_SetParameters {
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CCID_Header hdr;
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uint8_t bProtocolNum;
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uint16_t abRFU;
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CCID_ProtocolDataStructure abProtocolDataStructure;
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} CCID_SetParameters;
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typedef struct CCID_Notify_Slot_Change {
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uint8_t bMessageType; /* CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange */
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uint8_t bmSlotICCState;
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} CCID_Notify_Slot_Change;
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/* used for DataBlock response to XferBlock */
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typedef struct Answer {
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uint8_t slot;
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uint8_t seq;
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} Answer;
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/* pending BULK_IN messages */
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typedef struct BulkIn {
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uint8_t data[BULK_IN_BUF_SIZE];
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uint32_t len;
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uint32_t pos;
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} BulkIn;
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enum {
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MIGRATION_NONE,
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MIGRATION_MIGRATED,
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};
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typedef struct CCIDBus {
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BusState qbus;
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} CCIDBus;
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/*
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* powered - defaults to true, changed by PowerOn/PowerOff messages
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*/
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typedef struct USBCCIDState {
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USBDevice dev;
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USBEndpoint *intr;
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USBEndpoint *bulk;
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CCIDBus bus;
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CCIDCardState *card;
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BulkIn bulk_in_pending[BULK_IN_PENDING_NUM]; /* circular */
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uint32_t bulk_in_pending_start;
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uint32_t bulk_in_pending_end; /* first free */
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uint32_t bulk_in_pending_num;
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BulkIn *current_bulk_in;
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uint8_t bulk_out_data[BULK_OUT_DATA_SIZE];
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uint32_t bulk_out_pos;
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uint64_t last_answer_error;
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Answer pending_answers[PENDING_ANSWERS_NUM];
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uint32_t pending_answers_start;
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uint32_t pending_answers_end;
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uint32_t pending_answers_num;
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uint8_t bError;
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uint8_t bmCommandStatus;
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uint8_t bProtocolNum;
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CCID_ProtocolDataStructure abProtocolDataStructure;
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uint32_t ulProtocolDataStructureSize;
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uint32_t state_vmstate;
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uint32_t migration_target_ip;
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uint16_t migration_target_port;
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uint8_t migration_state;
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uint8_t bmSlotICCState;
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uint8_t powered;
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uint8_t notify_slot_change;
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uint8_t debug;
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} USBCCIDState;
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/*
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* CCID Spec chapter 4: CCID uses a standard device descriptor per Chapter 9,
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* "USB Device Framework", section 9.6.1, in the Universal Serial Bus
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* Specification.
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*
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* This device implemented based on the spec and with an Athena Smart Card
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* Reader as reference:
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* 0dc3:1004 Athena Smartcard Solutions, Inc.
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*/
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static const uint8_t qemu_ccid_descriptor[] = {
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/* Smart Card Device Class Descriptor */
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0x36, /* u8 bLength; */
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0x21, /* u8 bDescriptorType; Functional */
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0x10, 0x01, /* u16 bcdCCID; CCID Specification Release Number. */
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0x00, /*
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* u8 bMaxSlotIndex; The index of the highest available
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* slot on this device. All slots are consecutive starting
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* at 00h.
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*/
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0x07, /* u8 bVoltageSupport; 01h - 5.0v, 02h - 3.0, 03 - 1.8 */
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0x00, 0x00, /* u32 dwProtocols; RRRR PPPP. RRRR = 0000h.*/
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0x01, 0x00, /* PPPP: 0001h = Protocol T=0, 0002h = Protocol T=1 */
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/* u32 dwDefaultClock; in kHZ (0x0fa0 is 4 MHz) */
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0xa0, 0x0f, 0x00, 0x00,
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/* u32 dwMaximumClock; */
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0x00, 0x00, 0x01, 0x00,
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0x00, /* u8 bNumClockSupported; *
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* 0 means just the default and max. */
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/* u32 dwDataRate ;bps. 9600 == 00002580h */
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0x80, 0x25, 0x00, 0x00,
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/* u32 dwMaxDataRate ; 11520 bps == 0001C200h */
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0x00, 0xC2, 0x01, 0x00,
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0x00, /* u8 bNumDataRatesSupported; 00 means all rates between
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* default and max */
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/* u32 dwMaxIFSD; *
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* maximum IFSD supported by CCID for protocol *
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* T=1 (Maximum seen from various cards) */
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0xfe, 0x00, 0x00, 0x00,
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/* u32 dwSyncProtocols; 1 - 2-wire, 2 - 3-wire, 4 - I2C */
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0x00, 0x00, 0x00, 0x00,
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/* u32 dwMechanical; 0 - no special characteristics. */
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0x00, 0x00, 0x00, 0x00,
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/*
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* u32 dwFeatures;
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* 0 - No special characteristics
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* + 2 Automatic parameter configuration based on ATR data
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* + 4 Automatic activation of ICC on inserting
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* + 8 Automatic ICC voltage selection
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* + 10 Automatic ICC clock frequency change
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* + 20 Automatic baud rate change
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* + 40 Automatic parameters negotiation made by the CCID
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* + 80 automatic PPS made by the CCID
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* 100 CCID can set ICC in clock stop mode
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* 200 NAD value other then 00 accepted (T=1 protocol)
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* + 400 Automatic IFSD exchange as first exchange (T=1)
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* One of the following only:
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* + 10000 TPDU level exchanges with CCID
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* 20000 Short APDU level exchange with CCID
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* 40000 Short and Extended APDU level exchange with CCID
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*
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* 100000 USB Wake up signaling supported on card
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* insertion and removal. Must set bit 5 in bmAttributes
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* in Configuration descriptor if 100000 is set.
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*/
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0xfe, 0x04, 0x01, 0x00,
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/*
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* u32 dwMaxCCIDMessageLength; For extended APDU in
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* [261 + 10 , 65544 + 10]. Otherwise the minimum is
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* wMaxPacketSize of the Bulk-OUT endpoint
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*/
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0x12, 0x00, 0x01, 0x00,
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0xFF, /*
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* u8 bClassGetResponse; Significant only for CCID that
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* offers an APDU level for exchanges. Indicates the
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* default class value used by the CCID when it sends a
|
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* Get Response command to perform the transportation of
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* an APDU by T=0 protocol
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* FFh indicates that the CCID echos the class of the APDU.
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*/
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0xFF, /*
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* u8 bClassEnvelope; EAPDU only. Envelope command for
|
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* T=0
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*/
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0x00, 0x00, /*
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* u16 wLcdLayout; XXYY Number of lines (XX) and chars per
|
|
* line for LCD display used for PIN entry. 0000 - no LCD
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*/
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0x01, /*
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* u8 bPINSupport; 01h PIN Verification,
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* 02h PIN Modification
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*/
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0x01, /* u8 bMaxCCIDBusySlots; */
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};
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enum {
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STR_MANUFACTURER = 1,
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STR_PRODUCT,
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STR_SERIALNUMBER,
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STR_INTERFACE,
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};
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static const USBDescStrings desc_strings = {
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[STR_MANUFACTURER] = "QEMU",
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[STR_PRODUCT] = "QEMU USB CCID",
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[STR_SERIALNUMBER] = "1",
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[STR_INTERFACE] = "CCID Interface",
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};
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static const USBDescIface desc_iface0 = {
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.bInterfaceNumber = 0,
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.bNumEndpoints = 3,
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.bInterfaceClass = USB_CLASS_CSCID,
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.bInterfaceSubClass = USB_SUBCLASS_UNDEFINED,
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.bInterfaceProtocol = 0x00,
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.iInterface = STR_INTERFACE,
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.ndesc = 1,
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.descs = (USBDescOther[]) {
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{
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/* smartcard descriptor */
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.data = qemu_ccid_descriptor,
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},
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},
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_IN | CCID_INT_IN_EP,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.bInterval = 255,
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.wMaxPacketSize = 64,
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},{
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.bEndpointAddress = USB_DIR_IN | CCID_BULK_IN_EP,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 64,
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},{
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.bEndpointAddress = USB_DIR_OUT | CCID_BULK_OUT_EP,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 64,
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},
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}
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};
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static const USBDescDevice desc_device = {
|
|
.bcdUSB = 0x0110,
|
|
.bMaxPacketSize0 = 64,
|
|
.bNumConfigurations = 1,
|
|
.confs = (USBDescConfig[]) {
|
|
{
|
|
.bNumInterfaces = 1,
|
|
.bConfigurationValue = 1,
|
|
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER |
|
|
USB_CFG_ATT_WAKEUP,
|
|
.bMaxPower = 50,
|
|
.nif = 1,
|
|
.ifs = &desc_iface0,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const USBDesc desc_ccid = {
|
|
.id = {
|
|
.idVendor = CCID_VENDOR_ID,
|
|
.idProduct = CCID_PRODUCT_ID,
|
|
.bcdDevice = CCID_DEVICE_VERSION,
|
|
.iManufacturer = STR_MANUFACTURER,
|
|
.iProduct = STR_PRODUCT,
|
|
.iSerialNumber = STR_SERIALNUMBER,
|
|
},
|
|
.full = &desc_device,
|
|
.str = desc_strings,
|
|
};
|
|
|
|
static const uint8_t *ccid_card_get_atr(CCIDCardState *card, uint32_t *len)
|
|
{
|
|
CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
|
|
|
|
if (cc->get_atr) {
|
|
return cc->get_atr(card, len);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void ccid_card_apdu_from_guest(CCIDCardState *card,
|
|
const uint8_t *apdu,
|
|
uint32_t len)
|
|
{
|
|
CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
|
|
|
|
if (cc->apdu_from_guest) {
|
|
cc->apdu_from_guest(card, apdu, len);
|
|
}
|
|
}
|
|
|
|
static void ccid_card_exitfn(CCIDCardState *card)
|
|
{
|
|
CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
|
|
|
|
if (cc->exitfn) {
|
|
cc->exitfn(card);
|
|
}
|
|
|
|
}
|
|
|
|
static int ccid_card_initfn(CCIDCardState *card)
|
|
{
|
|
CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
|
|
|
|
if (cc->initfn) {
|
|
return cc->initfn(card);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool ccid_has_pending_answers(USBCCIDState *s)
|
|
{
|
|
return s->pending_answers_num > 0;
|
|
}
|
|
|
|
static void ccid_clear_pending_answers(USBCCIDState *s)
|
|
{
|
|
s->pending_answers_num = 0;
|
|
s->pending_answers_start = 0;
|
|
s->pending_answers_end = 0;
|
|
}
|
|
|
|
static void ccid_print_pending_answers(USBCCIDState *s)
|
|
{
|
|
Answer *answer;
|
|
int i, count;
|
|
|
|
DPRINTF(s, D_VERBOSE, "usb-ccid: pending answers:");
|
|
if (!ccid_has_pending_answers(s)) {
|
|
DPRINTF(s, D_VERBOSE, " empty\n");
|
|
return;
|
|
}
|
|
for (i = s->pending_answers_start, count = s->pending_answers_num ;
|
|
count > 0; count--, i++) {
|
|
answer = &s->pending_answers[i % PENDING_ANSWERS_NUM];
|
|
if (count == 1) {
|
|
DPRINTF(s, D_VERBOSE, "%d:%d\n", answer->slot, answer->seq);
|
|
} else {
|
|
DPRINTF(s, D_VERBOSE, "%d:%d,", answer->slot, answer->seq);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ccid_add_pending_answer(USBCCIDState *s, CCID_Header *hdr)
|
|
{
|
|
Answer *answer;
|
|
|
|
assert(s->pending_answers_num < PENDING_ANSWERS_NUM);
|
|
s->pending_answers_num++;
|
|
answer =
|
|
&s->pending_answers[(s->pending_answers_end++) % PENDING_ANSWERS_NUM];
|
|
answer->slot = hdr->bSlot;
|
|
answer->seq = hdr->bSeq;
|
|
ccid_print_pending_answers(s);
|
|
}
|
|
|
|
static void ccid_remove_pending_answer(USBCCIDState *s,
|
|
uint8_t *slot, uint8_t *seq)
|
|
{
|
|
Answer *answer;
|
|
|
|
assert(s->pending_answers_num > 0);
|
|
s->pending_answers_num--;
|
|
answer =
|
|
&s->pending_answers[(s->pending_answers_start++) % PENDING_ANSWERS_NUM];
|
|
*slot = answer->slot;
|
|
*seq = answer->seq;
|
|
ccid_print_pending_answers(s);
|
|
}
|
|
|
|
static void ccid_bulk_in_clear(USBCCIDState *s)
|
|
{
|
|
s->bulk_in_pending_start = 0;
|
|
s->bulk_in_pending_end = 0;
|
|
s->bulk_in_pending_num = 0;
|
|
}
|
|
|
|
static void ccid_bulk_in_release(USBCCIDState *s)
|
|
{
|
|
assert(s->current_bulk_in != NULL);
|
|
s->current_bulk_in->pos = 0;
|
|
s->current_bulk_in = NULL;
|
|
}
|
|
|
|
static void ccid_bulk_in_get(USBCCIDState *s)
|
|
{
|
|
if (s->current_bulk_in != NULL || s->bulk_in_pending_num == 0) {
|
|
return;
|
|
}
|
|
assert(s->bulk_in_pending_num > 0);
|
|
s->bulk_in_pending_num--;
|
|
s->current_bulk_in =
|
|
&s->bulk_in_pending[(s->bulk_in_pending_start++) % BULK_IN_PENDING_NUM];
|
|
}
|
|
|
|
static void *ccid_reserve_recv_buf(USBCCIDState *s, uint16_t len)
|
|
{
|
|
BulkIn *bulk_in;
|
|
|
|
DPRINTF(s, D_VERBOSE, "%s: QUEUE: reserve %d bytes\n", __func__, len);
|
|
|
|
/* look for an existing element */
|
|
if (len > BULK_IN_BUF_SIZE) {
|
|
DPRINTF(s, D_WARN, "usb-ccid.c: %s: len larger then max (%d>%d). "
|
|
"discarding message.\n",
|
|
__func__, len, BULK_IN_BUF_SIZE);
|
|
return NULL;
|
|
}
|
|
if (s->bulk_in_pending_num >= BULK_IN_PENDING_NUM) {
|
|
DPRINTF(s, D_WARN, "usb-ccid.c: %s: No free bulk_in buffers. "
|
|
"discarding message.\n", __func__);
|
|
return NULL;
|
|
}
|
|
bulk_in =
|
|
&s->bulk_in_pending[(s->bulk_in_pending_end++) % BULK_IN_PENDING_NUM];
|
|
s->bulk_in_pending_num++;
|
|
bulk_in->len = len;
|
|
return bulk_in->data;
|
|
}
|
|
|
|
static void ccid_reset(USBCCIDState *s)
|
|
{
|
|
ccid_bulk_in_clear(s);
|
|
ccid_clear_pending_answers(s);
|
|
}
|
|
|
|
static void ccid_detach(USBCCIDState *s)
|
|
{
|
|
ccid_reset(s);
|
|
}
|
|
|
|
static void ccid_handle_reset(USBDevice *dev)
|
|
{
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
DPRINTF(s, 1, "Reset\n");
|
|
|
|
ccid_reset(s);
|
|
}
|
|
|
|
static const char *ccid_control_to_str(USBCCIDState *s, int request)
|
|
{
|
|
switch (request) {
|
|
/* generic - should be factored out if there are other debugees */
|
|
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
|
return "(generic) set address";
|
|
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
|
return "(generic) get descriptor";
|
|
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
|
return "(generic) get configuration";
|
|
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
|
return "(generic) set configuration";
|
|
case DeviceRequest | USB_REQ_GET_STATUS:
|
|
return "(generic) get status";
|
|
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
|
return "(generic) clear feature";
|
|
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
|
return "(generic) set_feature";
|
|
case InterfaceRequest | USB_REQ_GET_INTERFACE:
|
|
return "(generic) get interface";
|
|
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
|
return "(generic) set interface";
|
|
/* class requests */
|
|
case ClassInterfaceOutRequest | CCID_CONTROL_ABORT:
|
|
return "ABORT";
|
|
case ClassInterfaceRequest | CCID_CONTROL_GET_CLOCK_FREQUENCIES:
|
|
return "GET_CLOCK_FREQUENCIES";
|
|
case ClassInterfaceRequest | CCID_CONTROL_GET_DATA_RATES:
|
|
return "GET_DATA_RATES";
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
static void ccid_handle_control(USBDevice *dev, USBPacket *p, int request,
|
|
int value, int index, int length, uint8_t *data)
|
|
{
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
int ret;
|
|
|
|
DPRINTF(s, 1, "%s: got control %s (%x), value %x\n", __func__,
|
|
ccid_control_to_str(s, request), request, value);
|
|
ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
|
|
if (ret >= 0) {
|
|
return;
|
|
}
|
|
|
|
switch (request) {
|
|
/* Class specific requests. */
|
|
case ClassInterfaceOutRequest | CCID_CONTROL_ABORT:
|
|
DPRINTF(s, 1, "ccid_control abort UNIMPLEMENTED\n");
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
case ClassInterfaceRequest | CCID_CONTROL_GET_CLOCK_FREQUENCIES:
|
|
DPRINTF(s, 1, "ccid_control get clock frequencies UNIMPLEMENTED\n");
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
case ClassInterfaceRequest | CCID_CONTROL_GET_DATA_RATES:
|
|
DPRINTF(s, 1, "ccid_control get data rates UNIMPLEMENTED\n");
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
default:
|
|
DPRINTF(s, 1, "got unsupported/bogus control %x, value %x\n",
|
|
request, value);
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static bool ccid_card_inserted(USBCCIDState *s)
|
|
{
|
|
return s->bmSlotICCState & SLOT_0_STATE_MASK;
|
|
}
|
|
|
|
static uint8_t ccid_card_status(USBCCIDState *s)
|
|
{
|
|
return ccid_card_inserted(s)
|
|
? (s->powered ?
|
|
ICC_STATUS_PRESENT_ACTIVE
|
|
: ICC_STATUS_PRESENT_INACTIVE
|
|
)
|
|
: ICC_STATUS_NOT_PRESENT;
|
|
}
|
|
|
|
static uint8_t ccid_calc_status(USBCCIDState *s)
|
|
{
|
|
/*
|
|
* page 55, 6.2.6, calculation of bStatus from bmICCStatus and
|
|
* bmCommandStatus
|
|
*/
|
|
uint8_t ret = ccid_card_status(s) | (s->bmCommandStatus << 6);
|
|
DPRINTF(s, D_VERBOSE, "%s: status = %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
static void ccid_reset_error_status(USBCCIDState *s)
|
|
{
|
|
s->bError = ERROR_CMD_NOT_SUPPORTED;
|
|
s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
|
|
}
|
|
|
|
static void ccid_write_slot_status(USBCCIDState *s, CCID_Header *recv)
|
|
{
|
|
CCID_SlotStatus *h = ccid_reserve_recv_buf(s, sizeof(CCID_SlotStatus));
|
|
if (h == NULL) {
|
|
return;
|
|
}
|
|
h->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_SlotStatus;
|
|
h->b.hdr.dwLength = 0;
|
|
h->b.hdr.bSlot = recv->bSlot;
|
|
h->b.hdr.bSeq = recv->bSeq;
|
|
h->b.bStatus = ccid_calc_status(s);
|
|
h->b.bError = s->bError;
|
|
h->bClockStatus = CLOCK_STATUS_RUNNING;
|
|
ccid_reset_error_status(s);
|
|
usb_wakeup(s->bulk, 0);
|
|
}
|
|
|
|
static void ccid_write_parameters(USBCCIDState *s, CCID_Header *recv)
|
|
{
|
|
CCID_Parameter *h;
|
|
uint32_t len = s->ulProtocolDataStructureSize;
|
|
|
|
h = ccid_reserve_recv_buf(s, sizeof(CCID_Parameter) + len);
|
|
if (h == NULL) {
|
|
return;
|
|
}
|
|
h->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_Parameters;
|
|
h->b.hdr.dwLength = 0;
|
|
h->b.hdr.bSlot = recv->bSlot;
|
|
h->b.hdr.bSeq = recv->bSeq;
|
|
h->b.bStatus = ccid_calc_status(s);
|
|
h->b.bError = s->bError;
|
|
h->bProtocolNum = s->bProtocolNum;
|
|
h->abProtocolDataStructure = s->abProtocolDataStructure;
|
|
ccid_reset_error_status(s);
|
|
usb_wakeup(s->bulk, 0);
|
|
}
|
|
|
|
static void ccid_write_data_block(USBCCIDState *s, uint8_t slot, uint8_t seq,
|
|
const uint8_t *data, uint32_t len)
|
|
{
|
|
CCID_DataBlock *p = ccid_reserve_recv_buf(s, sizeof(*p) + len);
|
|
|
|
if (p == NULL) {
|
|
return;
|
|
}
|
|
p->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_DataBlock;
|
|
p->b.hdr.dwLength = cpu_to_le32(len);
|
|
p->b.hdr.bSlot = slot;
|
|
p->b.hdr.bSeq = seq;
|
|
p->b.bStatus = ccid_calc_status(s);
|
|
p->b.bError = s->bError;
|
|
if (p->b.bError) {
|
|
DPRINTF(s, D_VERBOSE, "error %d\n", p->b.bError);
|
|
}
|
|
memcpy(p->abData, data, len);
|
|
ccid_reset_error_status(s);
|
|
usb_wakeup(s->bulk, 0);
|
|
}
|
|
|
|
static void ccid_report_error_failed(USBCCIDState *s, uint8_t error)
|
|
{
|
|
s->bmCommandStatus = COMMAND_STATUS_FAILED;
|
|
s->bError = error;
|
|
}
|
|
|
|
static void ccid_write_data_block_answer(USBCCIDState *s,
|
|
const uint8_t *data, uint32_t len)
|
|
{
|
|
uint8_t seq;
|
|
uint8_t slot;
|
|
|
|
if (!ccid_has_pending_answers(s)) {
|
|
DPRINTF(s, D_WARN, "error: no pending answer to return to guest\n");
|
|
ccid_report_error_failed(s, ERROR_ICC_MUTE);
|
|
return;
|
|
}
|
|
ccid_remove_pending_answer(s, &slot, &seq);
|
|
ccid_write_data_block(s, slot, seq, data, len);
|
|
}
|
|
|
|
static uint8_t atr_get_protocol_num(const uint8_t *atr, uint32_t len)
|
|
{
|
|
int i;
|
|
|
|
if (len < 2 || !(atr[1] & 0x80)) {
|
|
/* too short or TD1 not included */
|
|
return 0; /* T=0, default */
|
|
}
|
|
i = 1 + !!(atr[1] & 0x10) + !!(atr[1] & 0x20) + !!(atr[1] & 0x40);
|
|
i += !!(atr[1] & 0x80);
|
|
return atr[i] & 0x0f;
|
|
}
|
|
|
|
static void ccid_write_data_block_atr(USBCCIDState *s, CCID_Header *recv)
|
|
{
|
|
const uint8_t *atr = NULL;
|
|
uint32_t len = 0;
|
|
uint8_t atr_protocol_num;
|
|
CCID_T0ProtocolDataStructure *t0 = &s->abProtocolDataStructure.t0;
|
|
CCID_T1ProtocolDataStructure *t1 = &s->abProtocolDataStructure.t1;
|
|
|
|
if (s->card) {
|
|
atr = ccid_card_get_atr(s->card, &len);
|
|
}
|
|
atr_protocol_num = atr_get_protocol_num(atr, len);
|
|
DPRINTF(s, D_VERBOSE, "%s: atr contains protocol=%d\n", __func__,
|
|
atr_protocol_num);
|
|
/* set parameters from ATR - see spec page 109 */
|
|
s->bProtocolNum = (atr_protocol_num <= 1 ? atr_protocol_num
|
|
: s->bProtocolNum);
|
|
switch (atr_protocol_num) {
|
|
case 0:
|
|
/* TODO: unimplemented ATR T0 parameters */
|
|
t0->bmFindexDindex = 0;
|
|
t0->bmTCCKST0 = 0;
|
|
t0->bGuardTimeT0 = 0;
|
|
t0->bWaitingIntegerT0 = 0;
|
|
t0->bClockStop = 0;
|
|
break;
|
|
case 1:
|
|
/* TODO: unimplemented ATR T1 parameters */
|
|
t1->bmFindexDindex = 0;
|
|
t1->bmTCCKST1 = 0;
|
|
t1->bGuardTimeT1 = 0;
|
|
t1->bWaitingIntegerT1 = 0;
|
|
t1->bClockStop = 0;
|
|
t1->bIFSC = 0;
|
|
t1->bNadValue = 0;
|
|
break;
|
|
default:
|
|
DPRINTF(s, D_WARN, "%s: error: unsupported ATR protocol %d\n",
|
|
__func__, atr_protocol_num);
|
|
}
|
|
ccid_write_data_block(s, recv->bSlot, recv->bSeq, atr, len);
|
|
}
|
|
|
|
static void ccid_set_parameters(USBCCIDState *s, CCID_Header *recv)
|
|
{
|
|
CCID_SetParameters *ph = (CCID_SetParameters *) recv;
|
|
uint32_t protocol_num = ph->bProtocolNum & 3;
|
|
|
|
if (protocol_num != 0 && protocol_num != 1) {
|
|
ccid_report_error_failed(s, ERROR_CMD_NOT_SUPPORTED);
|
|
return;
|
|
}
|
|
s->bProtocolNum = protocol_num;
|
|
s->abProtocolDataStructure = ph->abProtocolDataStructure;
|
|
}
|
|
|
|
/*
|
|
* must be 5 bytes for T=0, 7 bytes for T=1
|
|
* See page 52
|
|
*/
|
|
static const CCID_ProtocolDataStructure defaultProtocolDataStructure = {
|
|
.t1 = {
|
|
.bmFindexDindex = 0x77,
|
|
.bmTCCKST1 = 0x00,
|
|
.bGuardTimeT1 = 0x00,
|
|
.bWaitingIntegerT1 = 0x00,
|
|
.bClockStop = 0x00,
|
|
.bIFSC = 0xfe,
|
|
.bNadValue = 0x00,
|
|
}
|
|
};
|
|
|
|
static void ccid_reset_parameters(USBCCIDState *s)
|
|
{
|
|
s->bProtocolNum = 0; /* T=0 */
|
|
s->abProtocolDataStructure = defaultProtocolDataStructure;
|
|
}
|
|
|
|
/* NOTE: only a single slot is supported (SLOT_0) */
|
|
static void ccid_on_slot_change(USBCCIDState *s, bool full)
|
|
{
|
|
/* RDR_to_PC_NotifySlotChange, 6.3.1 page 56 */
|
|
uint8_t current = s->bmSlotICCState;
|
|
if (full) {
|
|
s->bmSlotICCState |= SLOT_0_STATE_MASK;
|
|
} else {
|
|
s->bmSlotICCState &= ~SLOT_0_STATE_MASK;
|
|
}
|
|
if (current != s->bmSlotICCState) {
|
|
s->bmSlotICCState |= SLOT_0_CHANGED_MASK;
|
|
}
|
|
s->notify_slot_change = true;
|
|
usb_wakeup(s->intr, 0);
|
|
}
|
|
|
|
static void ccid_write_data_block_error(
|
|
USBCCIDState *s, uint8_t slot, uint8_t seq)
|
|
{
|
|
ccid_write_data_block(s, slot, seq, NULL, 0);
|
|
}
|
|
|
|
static void ccid_on_apdu_from_guest(USBCCIDState *s, CCID_XferBlock *recv)
|
|
{
|
|
uint32_t len;
|
|
|
|
if (ccid_card_status(s) != ICC_STATUS_PRESENT_ACTIVE) {
|
|
DPRINTF(s, 1,
|
|
"usb-ccid: not sending apdu to client, no card connected\n");
|
|
ccid_write_data_block_error(s, recv->hdr.bSlot, recv->hdr.bSeq);
|
|
return;
|
|
}
|
|
len = le32_to_cpu(recv->hdr.dwLength);
|
|
DPRINTF(s, 1, "%s: seq %d, len %d\n", __func__,
|
|
recv->hdr.bSeq, len);
|
|
ccid_add_pending_answer(s, (CCID_Header *)recv);
|
|
if (s->card && len <= BULK_OUT_DATA_SIZE) {
|
|
ccid_card_apdu_from_guest(s->card, recv->abData, len);
|
|
} else {
|
|
DPRINTF(s, D_WARN, "warning: discarded apdu\n");
|
|
}
|
|
}
|
|
|
|
static const char *ccid_message_type_to_str(uint8_t type)
|
|
{
|
|
switch (type) {
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn: return "IccPowerOn";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff: return "IccPowerOff";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus: return "GetSlotStatus";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock: return "XfrBlock";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters: return "GetParameters";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters: return "ResetParameters";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters: return "SetParameters";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_Escape: return "Escape";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_IccClock: return "IccClock";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_T0APDU: return "T0APDU";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_Secure: return "Secure";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_Mechanical: return "Mechanical";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_Abort: return "Abort";
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_SetDataRateAndClockFrequency:
|
|
return "SetDataRateAndClockFrequency";
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
static void ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p)
|
|
{
|
|
CCID_Header *ccid_header;
|
|
|
|
if (p->iov.size + s->bulk_out_pos > BULK_OUT_DATA_SIZE) {
|
|
goto err;
|
|
}
|
|
usb_packet_copy(p, s->bulk_out_data + s->bulk_out_pos, p->iov.size);
|
|
s->bulk_out_pos += p->iov.size;
|
|
if (s->bulk_out_pos < 10) {
|
|
DPRINTF(s, 1, "%s: header incomplete\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
ccid_header = (CCID_Header *)s->bulk_out_data;
|
|
if ((s->bulk_out_pos - 10 < ccid_header->dwLength) &&
|
|
(p->iov.size == CCID_MAX_PACKET_SIZE)) {
|
|
DPRINTF(s, D_VERBOSE,
|
|
"usb-ccid: bulk_in: expecting more packets (%d/%d)\n",
|
|
s->bulk_out_pos - 10, ccid_header->dwLength);
|
|
return;
|
|
}
|
|
if (s->bulk_out_pos - 10 != ccid_header->dwLength) {
|
|
DPRINTF(s, 1,
|
|
"usb-ccid: bulk_in: message size mismatch (got %d, expected %d)\n",
|
|
s->bulk_out_pos - 10, ccid_header->dwLength);
|
|
goto err;
|
|
}
|
|
|
|
DPRINTF(s, D_MORE_INFO, "%s %x %s\n", __func__,
|
|
ccid_header->bMessageType,
|
|
ccid_message_type_to_str(ccid_header->bMessageType));
|
|
switch (ccid_header->bMessageType) {
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus:
|
|
ccid_write_slot_status(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn:
|
|
DPRINTF(s, 1, "%s: PowerOn: %d\n", __func__,
|
|
((CCID_IccPowerOn *)(ccid_header))->bPowerSelect);
|
|
s->powered = true;
|
|
if (!ccid_card_inserted(s)) {
|
|
ccid_report_error_failed(s, ERROR_ICC_MUTE);
|
|
}
|
|
/* atr is written regardless of error. */
|
|
ccid_write_data_block_atr(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff:
|
|
ccid_reset_error_status(s);
|
|
s->powered = false;
|
|
ccid_write_slot_status(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock:
|
|
ccid_on_apdu_from_guest(s, (CCID_XferBlock *)s->bulk_out_data);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters:
|
|
ccid_reset_error_status(s);
|
|
ccid_set_parameters(s, ccid_header);
|
|
ccid_write_parameters(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters:
|
|
ccid_reset_error_status(s);
|
|
ccid_reset_parameters(s);
|
|
ccid_write_parameters(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters:
|
|
ccid_reset_error_status(s);
|
|
ccid_write_parameters(s, ccid_header);
|
|
break;
|
|
case CCID_MESSAGE_TYPE_PC_to_RDR_Mechanical:
|
|
ccid_report_error_failed(s, 0);
|
|
ccid_write_slot_status(s, ccid_header);
|
|
break;
|
|
default:
|
|
DPRINTF(s, 1,
|
|
"handle_data: ERROR: unhandled message type %Xh\n",
|
|
ccid_header->bMessageType);
|
|
/*
|
|
* The caller is expecting the device to respond, tell it we
|
|
* don't support the operation.
|
|
*/
|
|
ccid_report_error_failed(s, ERROR_CMD_NOT_SUPPORTED);
|
|
ccid_write_slot_status(s, ccid_header);
|
|
break;
|
|
}
|
|
s->bulk_out_pos = 0;
|
|
return;
|
|
|
|
err:
|
|
p->status = USB_RET_STALL;
|
|
s->bulk_out_pos = 0;
|
|
return;
|
|
}
|
|
|
|
static void ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p)
|
|
{
|
|
int len = 0;
|
|
|
|
ccid_bulk_in_get(s);
|
|
if (s->current_bulk_in != NULL) {
|
|
len = MIN(s->current_bulk_in->len - s->current_bulk_in->pos,
|
|
p->iov.size);
|
|
usb_packet_copy(p, s->current_bulk_in->data +
|
|
s->current_bulk_in->pos, len);
|
|
s->current_bulk_in->pos += len;
|
|
if (s->current_bulk_in->pos == s->current_bulk_in->len) {
|
|
ccid_bulk_in_release(s);
|
|
}
|
|
} else {
|
|
/* return when device has no data - usb 2.0 spec Table 8-4 */
|
|
p->status = USB_RET_NAK;
|
|
}
|
|
if (len) {
|
|
DPRINTF(s, D_MORE_INFO,
|
|
"%s: %zd/%d req/act to guest (BULK_IN)\n",
|
|
__func__, p->iov.size, len);
|
|
}
|
|
if (len < p->iov.size) {
|
|
DPRINTF(s, 1,
|
|
"%s: returning short (EREMOTEIO) %d < %zd\n",
|
|
__func__, len, p->iov.size);
|
|
}
|
|
}
|
|
|
|
static void ccid_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
uint8_t buf[2];
|
|
|
|
switch (p->pid) {
|
|
case USB_TOKEN_OUT:
|
|
ccid_handle_bulk_out(s, p);
|
|
break;
|
|
|
|
case USB_TOKEN_IN:
|
|
switch (p->ep->nr) {
|
|
case CCID_BULK_IN_EP:
|
|
ccid_bulk_in_copy_to_guest(s, p);
|
|
break;
|
|
case CCID_INT_IN_EP:
|
|
if (s->notify_slot_change) {
|
|
/* page 56, RDR_to_PC_NotifySlotChange */
|
|
buf[0] = CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange;
|
|
buf[1] = s->bmSlotICCState;
|
|
usb_packet_copy(p, buf, 2);
|
|
s->notify_slot_change = false;
|
|
s->bmSlotICCState &= ~SLOT_0_CHANGED_MASK;
|
|
DPRINTF(s, D_INFO,
|
|
"handle_data: int_in: notify_slot_change %X, "
|
|
"requested len %zd\n",
|
|
s->bmSlotICCState, p->iov.size);
|
|
} else {
|
|
p->status = USB_RET_NAK;
|
|
}
|
|
break;
|
|
default:
|
|
DPRINTF(s, 1, "Bad endpoint\n");
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
DPRINTF(s, 1, "Bad token\n");
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ccid_handle_destroy(USBDevice *dev)
|
|
{
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
ccid_bulk_in_clear(s);
|
|
}
|
|
|
|
static void ccid_flush_pending_answers(USBCCIDState *s)
|
|
{
|
|
while (ccid_has_pending_answers(s)) {
|
|
ccid_write_data_block_answer(s, NULL, 0);
|
|
}
|
|
}
|
|
|
|
static Answer *ccid_peek_next_answer(USBCCIDState *s)
|
|
{
|
|
return s->pending_answers_num == 0
|
|
? NULL
|
|
: &s->pending_answers[s->pending_answers_start % PENDING_ANSWERS_NUM];
|
|
}
|
|
|
|
static Property ccid_props[] = {
|
|
DEFINE_PROP_UINT32("slot", struct CCIDCardState, slot, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
#define TYPE_CCID_BUS "ccid-bus"
|
|
#define CCID_BUS(obj) OBJECT_CHECK(CCIDBus, (obj), TYPE_CCID_BUS)
|
|
|
|
static const TypeInfo ccid_bus_info = {
|
|
.name = TYPE_CCID_BUS,
|
|
.parent = TYPE_BUS,
|
|
.instance_size = sizeof(CCIDBus),
|
|
};
|
|
|
|
void ccid_card_send_apdu_to_guest(CCIDCardState *card,
|
|
uint8_t *apdu, uint32_t len)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
Answer *answer;
|
|
|
|
if (!ccid_has_pending_answers(s)) {
|
|
DPRINTF(s, 1, "CCID ERROR: got an APDU without pending answers\n");
|
|
return;
|
|
}
|
|
s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
|
|
answer = ccid_peek_next_answer(s);
|
|
if (answer == NULL) {
|
|
DPRINTF(s, D_WARN, "%s: error: unexpected lack of answer\n", __func__);
|
|
ccid_report_error_failed(s, ERROR_HW_ERROR);
|
|
return;
|
|
}
|
|
DPRINTF(s, 1, "APDU returned to guest %d (answer seq %d, slot %d)\n",
|
|
len, answer->seq, answer->slot);
|
|
ccid_write_data_block_answer(s, apdu, len);
|
|
}
|
|
|
|
void ccid_card_card_removed(CCIDCardState *card)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
ccid_on_slot_change(s, false);
|
|
ccid_flush_pending_answers(s);
|
|
ccid_reset(s);
|
|
}
|
|
|
|
int ccid_card_ccid_attach(CCIDCardState *card)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
DPRINTF(s, 1, "CCID Attach\n");
|
|
if (s->migration_state == MIGRATION_MIGRATED) {
|
|
s->migration_state = MIGRATION_NONE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void ccid_card_ccid_detach(CCIDCardState *card)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
DPRINTF(s, 1, "CCID Detach\n");
|
|
if (ccid_card_inserted(s)) {
|
|
ccid_on_slot_change(s, false);
|
|
}
|
|
ccid_detach(s);
|
|
}
|
|
|
|
void ccid_card_card_error(CCIDCardState *card, uint64_t error)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
s->bmCommandStatus = COMMAND_STATUS_FAILED;
|
|
s->last_answer_error = error;
|
|
DPRINTF(s, 1, "VSC_Error: %" PRIX64 "\n", s->last_answer_error);
|
|
/* TODO: these errors should be more verbose and propagated to the guest.*/
|
|
/*
|
|
* We flush all pending answers on CardRemove message in ccid-card-passthru,
|
|
* so check that first to not trigger abort
|
|
*/
|
|
if (ccid_has_pending_answers(s)) {
|
|
ccid_write_data_block_answer(s, NULL, 0);
|
|
}
|
|
}
|
|
|
|
void ccid_card_card_inserted(CCIDCardState *card)
|
|
{
|
|
DeviceState *qdev = DEVICE(card);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
|
|
ccid_flush_pending_answers(s);
|
|
ccid_on_slot_change(s, true);
|
|
}
|
|
|
|
static int ccid_card_exit(DeviceState *qdev)
|
|
{
|
|
CCIDCardState *card = CCID_CARD(qdev);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
if (ccid_card_inserted(s)) {
|
|
ccid_card_card_removed(card);
|
|
}
|
|
ccid_card_exitfn(card);
|
|
s->card = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int ccid_card_init(DeviceState *qdev)
|
|
{
|
|
CCIDCardState *card = CCID_CARD(qdev);
|
|
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
int ret = 0;
|
|
|
|
if (card->slot != 0) {
|
|
error_report("Warning: usb-ccid supports one slot, can't add %d",
|
|
card->slot);
|
|
return -1;
|
|
}
|
|
if (s->card != NULL) {
|
|
error_report("Warning: usb-ccid card already full, not adding");
|
|
return -1;
|
|
}
|
|
ret = ccid_card_initfn(card);
|
|
if (ret == 0) {
|
|
s->card = card;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void ccid_realize(USBDevice *dev, Error **errp)
|
|
{
|
|
USBCCIDState *s = USB_CCID_DEV(dev);
|
|
|
|
usb_desc_create_serial(dev);
|
|
usb_desc_init(dev);
|
|
qbus_create_inplace(&s->bus, sizeof(s->bus), TYPE_CCID_BUS, DEVICE(dev),
|
|
NULL);
|
|
qbus_set_hotplug_handler(BUS(&s->bus), DEVICE(dev), &error_abort);
|
|
s->intr = usb_ep_get(dev, USB_TOKEN_IN, CCID_INT_IN_EP);
|
|
s->bulk = usb_ep_get(dev, USB_TOKEN_IN, CCID_BULK_IN_EP);
|
|
s->card = NULL;
|
|
s->migration_state = MIGRATION_NONE;
|
|
s->migration_target_ip = 0;
|
|
s->migration_target_port = 0;
|
|
s->dev.speed = USB_SPEED_FULL;
|
|
s->dev.speedmask = USB_SPEED_MASK_FULL;
|
|
s->notify_slot_change = false;
|
|
s->powered = true;
|
|
s->pending_answers_num = 0;
|
|
s->last_answer_error = 0;
|
|
s->bulk_in_pending_start = 0;
|
|
s->bulk_in_pending_end = 0;
|
|
s->current_bulk_in = NULL;
|
|
ccid_reset_error_status(s);
|
|
s->bulk_out_pos = 0;
|
|
ccid_reset_parameters(s);
|
|
ccid_reset(s);
|
|
s->debug = parse_debug_env("QEMU_CCID_DEBUG", D_VERBOSE, s->debug);
|
|
}
|
|
|
|
static int ccid_post_load(void *opaque, int version_id)
|
|
{
|
|
USBCCIDState *s = opaque;
|
|
|
|
/*
|
|
* This must be done after usb_device_attach, which sets state to ATTACHED,
|
|
* while it must be DEFAULT in order to accept packets (like it is after
|
|
* reset, but reset will reset our addr and call our reset handler which
|
|
* may change state, and we don't want to do that when migrating).
|
|
*/
|
|
s->dev.state = s->state_vmstate;
|
|
return 0;
|
|
}
|
|
|
|
static void ccid_pre_save(void *opaque)
|
|
{
|
|
USBCCIDState *s = opaque;
|
|
|
|
s->state_vmstate = s->dev.state;
|
|
if (s->dev.attached) {
|
|
/*
|
|
* Migrating an open device, ignore reconnection CHR_EVENT to avoid an
|
|
* erroneous detach.
|
|
*/
|
|
s->migration_state = MIGRATION_MIGRATED;
|
|
}
|
|
}
|
|
|
|
static VMStateDescription bulk_in_vmstate = {
|
|
.name = "CCID BulkIn state",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_BUFFER(data, BulkIn),
|
|
VMSTATE_UINT32(len, BulkIn),
|
|
VMSTATE_UINT32(pos, BulkIn),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static VMStateDescription answer_vmstate = {
|
|
.name = "CCID Answer state",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT8(slot, Answer),
|
|
VMSTATE_UINT8(seq, Answer),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static VMStateDescription usb_device_vmstate = {
|
|
.name = "usb_device",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT8(addr, USBDevice),
|
|
VMSTATE_BUFFER(setup_buf, USBDevice),
|
|
VMSTATE_BUFFER(data_buf, USBDevice),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static VMStateDescription ccid_vmstate = {
|
|
.name = "usb-ccid",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.post_load = ccid_post_load,
|
|
.pre_save = ccid_pre_save,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_STRUCT(dev, USBCCIDState, 1, usb_device_vmstate, USBDevice),
|
|
VMSTATE_UINT8(debug, USBCCIDState),
|
|
VMSTATE_BUFFER(bulk_out_data, USBCCIDState),
|
|
VMSTATE_UINT32(bulk_out_pos, USBCCIDState),
|
|
VMSTATE_UINT8(bmSlotICCState, USBCCIDState),
|
|
VMSTATE_UINT8(powered, USBCCIDState),
|
|
VMSTATE_UINT8(notify_slot_change, USBCCIDState),
|
|
VMSTATE_UINT64(last_answer_error, USBCCIDState),
|
|
VMSTATE_UINT8(bError, USBCCIDState),
|
|
VMSTATE_UINT8(bmCommandStatus, USBCCIDState),
|
|
VMSTATE_UINT8(bProtocolNum, USBCCIDState),
|
|
VMSTATE_BUFFER(abProtocolDataStructure.data, USBCCIDState),
|
|
VMSTATE_UINT32(ulProtocolDataStructureSize, USBCCIDState),
|
|
VMSTATE_STRUCT_ARRAY(bulk_in_pending, USBCCIDState,
|
|
BULK_IN_PENDING_NUM, 1, bulk_in_vmstate, BulkIn),
|
|
VMSTATE_UINT32(bulk_in_pending_start, USBCCIDState),
|
|
VMSTATE_UINT32(bulk_in_pending_end, USBCCIDState),
|
|
VMSTATE_STRUCT_ARRAY(pending_answers, USBCCIDState,
|
|
PENDING_ANSWERS_NUM, 1, answer_vmstate, Answer),
|
|
VMSTATE_UINT32(pending_answers_num, USBCCIDState),
|
|
VMSTATE_UINT8(migration_state, USBCCIDState),
|
|
VMSTATE_UINT32(state_vmstate, USBCCIDState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static Property ccid_properties[] = {
|
|
DEFINE_PROP_UINT8("debug", USBCCIDState, debug, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void ccid_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
|
|
|
|
uc->realize = ccid_realize;
|
|
uc->product_desc = "QEMU USB CCID";
|
|
uc->usb_desc = &desc_ccid;
|
|
uc->handle_reset = ccid_handle_reset;
|
|
uc->handle_control = ccid_handle_control;
|
|
uc->handle_data = ccid_handle_data;
|
|
uc->handle_destroy = ccid_handle_destroy;
|
|
dc->desc = "CCID Rev 1.1 smartcard reader";
|
|
dc->vmsd = &ccid_vmstate;
|
|
dc->props = ccid_properties;
|
|
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
|
|
hc->unplug = qdev_simple_device_unplug_cb;
|
|
}
|
|
|
|
static const TypeInfo ccid_info = {
|
|
.name = CCID_DEV_NAME,
|
|
.parent = TYPE_USB_DEVICE,
|
|
.instance_size = sizeof(USBCCIDState),
|
|
.class_init = ccid_class_initfn,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_HOTPLUG_HANDLER },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
static void ccid_card_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *k = DEVICE_CLASS(klass);
|
|
k->bus_type = TYPE_CCID_BUS;
|
|
k->init = ccid_card_init;
|
|
k->exit = ccid_card_exit;
|
|
k->props = ccid_props;
|
|
}
|
|
|
|
static const TypeInfo ccid_card_type_info = {
|
|
.name = TYPE_CCID_CARD,
|
|
.parent = TYPE_DEVICE,
|
|
.instance_size = sizeof(CCIDCardState),
|
|
.abstract = true,
|
|
.class_size = sizeof(CCIDCardClass),
|
|
.class_init = ccid_card_class_init,
|
|
};
|
|
|
|
static void ccid_register_types(void)
|
|
{
|
|
type_register_static(&ccid_bus_info);
|
|
type_register_static(&ccid_card_type_info);
|
|
type_register_static(&ccid_info);
|
|
usb_legacy_register(CCID_DEV_NAME, "ccid", NULL);
|
|
}
|
|
|
|
type_init(ccid_register_types)
|