/[pcsclite]/trunk/Drivers/ccid/SCARDGETATTRIB.txt
spacer

Contents of /trunk/Drivers/ccid/SCARDGETATTRIB.txt

spacer Parent Directory | spacer Revision Log


Revision 6313 - (show annotations) (download)
Wed May 30 18:35:37 2012 UTC (9 months ago) by rousseau
File MIME type: text/plain
File size: 2691 byte(s)
Update descriptions
1 List of SCardGetAttrib() commands supported by the CCID driver
2 ==============================================================
3
4 PC/SC provides the SCardGetAttrib() function to request some attributes from
5 the driver.
6
7
8 PC/SC function prototype
9 """""""""""""""""""""""""
10
11 LONG SCardGetAttrib(SCARDHANDLE hCard,
12 DWORD dwAttrId,
13 LPBYTE pbAttr,
14 LPDWORD pcbAttrLen);
15
16 Parameters:
17
18 hCard IN Connection made from SCardConnect
19 dwAttrId IN Identifier for the attribute to get
20 pbAttr OUT Pointer to a buffer that receives the attribute
21 pcbAttrLen IN/OUT Length of the pbAttr buffer in bytes
22
23 If the attribute is not supported the applications receive the error
24 SCARD_E_UNSUPPORTED_FEATURE (or SCARD_E_NOT_TRANSACTED for pcsc-lite
25 version < 1.3.3)
26
27
28 supported attributes
29 """"""""""""""""""""
30
31 SCARD_ATTR_ATR_STRING
32 ATR of the card
33
34 SCARD_ATTR_ICC_INTERFACE_STATUS
35 Single byte. Zero if smart card electrical contact is not active;
36 nonzero if contact is active.
37
38 SCARD_ATTR_ICC_PRESENCE
39 Single byte indicating smart card presence:
40 0 = not present
41 1 = card present but not swallowed (applies only if reader supports
42 smart card swallowing)
43 2 = card present (and swallowed if reader supports smart card swallowing)
44 4 = card confiscated.
45
46 SCARD_ATTR_VENDOR_IFD_VERSION
47 Vendor-supplied interface device version
48 DWORD in the form 0xMMmmbbbb where
49 MM = major version,
50 mm = minor version,
51 and bbbb = build number
52 It is the bcdDevice USB field.
53
54 SCARD_ATTR_VENDOR_NAME
55 name of the IFD (reader) vendor. It is the iManufacturer USB field
56 (if any).
57
58 SCARD_ATTR_MAXINPUT
59 maximum size of an APDU supported by the reader.
60 format is unsigned 32-bit unsing the byte order of the platform.
61 Correct readers should support up to 261 bytes (CLA + INS + P1 + P2 +
62 Lc + 255 bytes of data) but some readers support less (253 bytes only
63 for example). It is a problem for T=1 cards when the reader works in
64 APDU mode instead of TPDU and for T=0 cards.
65
66 SCARD_ATTR_VENDOR_IFD_SERIAL_NO
67 reader serial number (if available).
68
69
70 Sample code
71 ===========
72
73 #include <reader.h>
74
75 {
76 [...]
77
78 unsigned char pbAtr[MAX_ATR_SIZE];
79 DWORD dwAtrLen;
80
81 /* use a NULL buffer to just get the needed length */
82 rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, NULL, &dwAtrLen);
83 if (rv == SCARD_S_SUCCESS)
84 printf("ATR length: %ld\n", dwAtrLen);
85
86 dwAtrLen = sizeof(pbAtr);
87 rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, pbAtr, &dwAtrLen);
88 if (rv == SCARD_S_SUCCESS)
89 {
90 for (i = 0; i < dwAtrLen; i++)
91 printf("%02X ", pbAtr[i]);
92 printf("\n");
93 }
94 }
95

  ViewVC Help
Powered by ViewVC 1.1.5  
gipoco.com is neither affiliated with the authors of this page nor responsible for its contents. This is a safe-cache copy of the original web site.