libcacard: initial commit

libcacard emulates a Common Access Card (CAC) which is a standard
for smartcards. It is used by the emulated ccid card introduced in
a following patch. Docs are available in docs/libcacard.txt

Signed-off-by: Alon Levy <alevy@redhat.com>

---

changes from v24->v25:
 * Fix out of tree builds.
 * Fix build with linux-user targets.

changes from v23->v24: (Jes Sorensen review 2)
 * Makefile.target: use obj-$(CONFIG_*) +=
 * remove unrequired includes, include qemu-common before qemu-thread
  * required adding #define NO_NSPR_10_SUPPORT (harmless)

changes from v22->v23:
 * configure fixes: (reported by Stefan Hajnoczi)
  * test a = b, not a == b (second isn't portable)
  * quote $source_path in case it contains spaces
   - this doesn't really help since there are many other places
     that need similar fixes, not introduced by this patch.

changes from v21->v22:
 * fix configure to not link libcacard if nss not found
    (reported by Stefan Hajnoczi)
 * fix vscclient linkage with simpletrace backend
    (reported by Stefan Hajnoczi)
 * card_7816.c: add missing break in ERROR_DATA_NOT_FOUND
    (reported by William van de Velde)

changes from v20->v21: (Jes Sorensen review)
 * use qemu infrastructure: qemu-thread, qemu-common (qemu_malloc
  and qemu_free), error_report
 * assert instead of ASSERT
 * cosmetic fixes
 * use strpbrk and isspace
 * add --disable-nss --enable-nss here, instead of in the final patch.
 * split vscclient, passthru and docs to following patches.

changes from v19->v20:
 * checkpatch.pl

changes from v15->v16:

Build:
 * don't erase self with distclean
 * fix make clean after make distclean
 * Makefile: make vscclient link quiet

Behavioral:
 * vcard_emul_nss: load coolkey in more situations
 * vscclient:
  * use hton,ntoh
  * send init on connect, only start vevent thread on response
  * read payload after header check, before type switch
  * remove Reconnect
  * update for vscard_common changes, empty Flush implementation

Style/Whitespace:
 * fix wrong variable usage
 * remove unused variable
 * use only C style comments
  * add copyright header
  * fix tabulation

Signed-off-by: Alon Levy <alevy@redhat.com>

libcacard: fix out of tree builds

1 files changed, 165 insertions, 0 deletions

diff --git a/libcacard/card_7816t.h b/libcacard/card_7816t.h
new file mode 100644
index 0000000000..9333285d73
--- /dev/null
+++ b/libcacard/card_7816t.h
@@ -0,0 +1,165 @@
+/*
+ * Implement the 7816 portion of the card spec
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+#ifndef CARD_7816T_H
+#define CARD_7816T_H 1
+
+typedef unsigned short vcard_7816_status_t;
+
+struct VCardResponseStruct {
+    unsigned char *b_data;
+    vcard_7816_status_t b_status;
+    unsigned char b_sw1;
+    unsigned char b_sw2;
+    int b_len;
+    int b_total_len;
+    enum VCardResponseBufferType {
+        VCARD_MALLOC,
+        VCARD_MALLOC_DATA,
+        VCARD_MALLOC_STRUCT,
+        VCARD_STATIC
+    } b_type;
+};
+
+#define VCARD_RESPONSE_NEW_STATIC_STATUS(stat) \
+static const VCardResponse VCardResponse##stat = \
+        {(unsigned char *)&VCardResponse##stat.b_sw1, (stat), ((stat) >> 8), \
+         ((stat) & 0xff), 0, 2, VCARD_STATIC};
+
+#define VCARD_RESPONSE_NEW_STATIC_STATUS_BYTES(sw1, sw2) \
+static const VCardResponse VCARDResponse##sw1 = \
+        {(unsigned char *)&VCardResponse##name.b_sw1, ((sw1) << 8 | (sw2)), \
+         (sw1), (sw2), 0, 2, VCARD_STATIC};
+
+/* cast away the const, callers need may need to 'free' the
+ * result, and const implies that they don't */
+#define VCARD_RESPONSE_GET_STATIC(name) \
+        ((VCardResponse *)(&VCardResponse##name))
+
+typedef enum {
+    VCARD_7816_ISO,
+    VCARD_7816_RFU,
+    VCARD_7816_PTS,
+    VCARD_7816_PROPIETARY
+} VCardAPDUType;
+
+
+/*
+ * 7816 header. All APDU's have this header.
+ * They must be laid out in this order.
+ */
+struct VCardAPDUHeader {
+    unsigned char ah_cla;
+    unsigned char ah_ins;
+    unsigned char ah_p1;
+    unsigned char ah_p2;
+    unsigned char ah_Le;
+    unsigned char ah_body[1]; /* indefinate length */
+};
+
+/*
+ * 7816 APDU structure. The raw bytes are stored in the union and can be
+ * accessed directly through u.data (which is aliased as a_data).
+ *
+ * Names of the fields match the 7816 documentation.
+ */
+struct VCardAPDUStruct {
+    int a_len;                /* length of the whole buffer, including header */
+    int a_Lc;                 /* 7816 Lc (parameter length) value */
+    int a_Le;                 /* 7816 Le (expected result length) value */
+    unsigned char *a_body;    /* pointer to the parameter */
+    int a_channel;            /* decoded channel */
+    int a_secure_messaging;   /* decoded secure messaging type */
+    int a_type;               /* decoded type from cla (top nibble of class) */
+    VCardAPDUType a_gen_type; /* generic type (7816, PROPRIETARY, RFU, etc) */
+    union {
+        struct VCardAPDUHeader *header;
+        unsigned char   *data;
+    } u;
+/* give the subfields a unified look */
+#define a_header u.header
+#define a_data u.data
+#define a_cla a_header->ah_cla /* class */
+#define a_ins a_header->ah_ins /* instruction */
+#define a_p1 a_header->ah_p1   /* parameter 1 */
+#define a_p2 a_header->ah_p2   /* parameter 2 */
+};
+
+/* 7816 status codes */
+#define VCARD7816_STATUS_SUCCESS                              0x9000
+#define VCARD7816_STATUS_WARNING                              0x6200
+#define VCARD7816_STATUS_WARNING_RET_CORUPT                   0x6281
+#define VCARD7816_STATUS_WARNING_BUF_END_BEFORE_LE            0x6282
+#define VCARD7816_STATUS_WARNING_INVALID_FILE_SELECTED        0x6283
+#define VCARD7816_STATUS_WARNING_FCI_FORMAT_INVALID           0x6284
+#define VCARD7816_STATUS_WARNING_CHANGE                       0x6300
+#define VCARD7816_STATUS_WARNING_FILE_FILLED                  0x6381
+#define VCARD7816_STATUS_EXC_ERROR                            0x6400
+#define VCARD7816_STATUS_EXC_ERROR_CHANGE                     0x6500
+#define VCARD7816_STATUS_EXC_ERROR_MEMORY_FAILURE             0x6581
+#define VCARD7816_STATUS_ERROR_WRONG_LENGTH                   0x6700
+#define VCARD7816_STATUS_ERROR_CLA_NOT_SUPPORTED              0x6800
+#define VCARD7816_STATUS_ERROR_CHANNEL_NOT_SUPPORTED          0x6881
+#define VCARD7816_STATUS_ERROR_SECURE_NOT_SUPPORTED           0x6882
+#define VCARD7816_STATUS_ERROR_COMMAND_NOT_SUPPORTED          0x6900
+#define VCARD7816_STATUS_ERROR_COMMAND_INCOMPATIBLE_WITH_FILE 0x6981
+#define VCARD7816_STATUS_ERROR_SECURITY_NOT_SATISFIED         0x6982
+#define VCARD7816_STATUS_ERROR_AUTHENTICATION_BLOCKED         0x6983
+#define VCARD7816_STATUS_ERROR_DATA_INVALID                   0x6984
+#define VCARD7816_STATUS_ERROR_CONDITION_NOT_SATISFIED        0x6985
+#define VCARD7816_STATUS_ERROR_DATA_NO_EF                     0x6986
+#define VCARD7816_STATUS_ERROR_SM_OBJECT_MISSING              0x6987
+#define VCARD7816_STATUS_ERROR_SM_OBJECT_INCORRECT            0x6988
+#define VCARD7816_STATUS_ERROR_WRONG_PARAMETERS               0x6a00
+#define VCARD7816_STATUS_ERROR_WRONG_PARAMETERS_IN_DATA       0x6a80
+#define VCARD7816_STATUS_ERROR_FUNCTION_NOT_SUPPORTED         0x6a81
+#define VCARD7816_STATUS_ERROR_FILE_NOT_FOUND                 0x6a82
+#define VCARD7816_STATUS_ERROR_RECORD_NOT_FOUND               0x6a83
+#define VCARD7816_STATUS_ERROR_NO_SPACE_FOR_FILE              0x6a84
+#define VCARD7816_STATUS_ERROR_LC_TLV_INCONSISTENT            0x6a85
+#define VCARD7816_STATUS_ERROR_P1_P2_INCORRECT                0x6a86
+#define VCARD7816_STATUS_ERROR_LC_P1_P2_INCONSISTENT          0x6a87
+#define VCARD7816_STATUS_ERROR_DATA_NOT_FOUND                 0x6a88
+#define VCARD7816_STATUS_ERROR_WRONG_PARAMETERS_2             0x6b00
+#define VCARD7816_STATUS_ERROR_INS_CODE_INVALID               0x6d00
+#define VCARD7816_STATUS_ERROR_CLA_INVALID                    0x6e00
+#define VCARD7816_STATUS_ERROR_GENERAL                        0x6f00
+/* 7816 sw1 codes */
+#define VCARD7816_SW1_SUCCESS               0x90
+#define VCARD7816_SW1_RESPONSE_BYTES        0x61
+#define VCARD7816_SW1_WARNING               0x62
+#define VCARD7816_SW1_WARNING_CHANGE        0x63
+#define VCARD7816_SW1_EXC_ERROR             0x64
+#define VCARD7816_SW1_EXC_ERROR_CHANGE      0x65
+#define VCARD7816_SW1_ERROR_WRONG_LENGTH    0x67
+#define VCARD7816_SW1_CLA_ERROR             0x68
+#define VCARD7816_SW1_COMMAND_ERROR         0x69
+#define VCARD7816_SW1_P1_P2_ERROR           0x6a
+#define VCARD7816_SW1_LE_ERROR              0x6c
+#define VCARD7816_SW1_INS_ERROR             0x6d
+#define VCARD7816_SW1_CLA_NOT_SUPPORTED     0x6e
+
+/* 7816 Instructions */
+#define VCARD7816_INS_MANAGE_CHANNEL        0x70
+#define VCARD7816_INS_EXTERNAL_AUTHENTICATE 0x82
+#define VCARD7816_INS_GET_CHALLENGE         0x84
+#define VCARD7816_INS_INTERNAL_AUTHENTICATE 0x88
+#define VCARD7816_INS_ERASE_BINARY          0x0e
+#define VCARD7816_INS_READ_BINARY           0xb0
+#define VCARD7816_INS_WRITE_BINARY          0xd0
+#define VCARD7816_INS_UPDATE_BINARY         0xd6
+#define VCARD7816_INS_READ_RECORD           0xb2
+#define VCARD7816_INS_WRITE_RECORD          0xd2
+#define VCARD7816_INS_UPDATE_RECORD         0xdc
+#define VCARD7816_INS_APPEND_RECORD         0xe2
+#define VCARD7816_INS_ENVELOPE              0xc2
+#define VCARD7816_INS_PUT_DATA              0xda
+#define VCARD7816_INS_GET_DATA              0xca
+#define VCARD7816_INS_SELECT_FILE           0xa4
+#define VCARD7816_INS_VERIFY                0x20
+#define VCARD7816_INS_GET_RESPONSE          0xc0
+
+#endif