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scd: Detect Yubikey and provide nicer display-s/n.
* scd/app-common.h (struct app_ctx_s): Rename unused field card_version to cardversion. * scd/app.c (app_new_register): Add code rom 2.3 to detect the Yubikey and set cardversion. (app_get_dispserialno): New. * scd/app-openpgp.c (do_getattr): Use app_get_dispserialno.
This commit is contained in:
Werner Koch
parent
43b3ec5aee
commit
f8588369bc
@ -101,7 +101,7 @@ struct app_ctx_s {
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apptype_t apptype;
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unsigned int appversion; /* Version of the application or 0. */
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cardtype_t cardtype; /* The token's type. */
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unsigned int card_version;
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unsigned int cardversion;/* Firmware version of the token or 0. */
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unsigned int card_status;
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unsigned int reset_requested:1;
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unsigned int periodical_check_needed:1;
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@ -213,6 +213,7 @@ size_t app_help_read_length_of_cert (int slot, int fid, size_t *r_certoff);
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/*-- app.c --*/
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void app_send_card_list (ctrl_t ctrl);
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char *app_get_serialno (app_t app);
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char *app_get_dispserialno (app_t app, int nofallback);
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void app_dump_state (void);
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void application_notify_card_reset (int slot);
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@ -1084,17 +1084,14 @@ do_getattr (app_t app, ctrl_t ctrl, const char *name)
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}
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if (table[idx].special == -4)
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{
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char *serial = app_get_serialno (app);
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char *serial = app_get_dispserialno (app, 0);
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if (serial)
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{
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if (strlen (serial) > 16+12)
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{
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send_status_info (ctrl, table[idx].name, serial+16, 12, NULL, 0);
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xfree (serial);
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return 0;
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}
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send_status_info (ctrl, table[idx].name,
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serial, strlen (serial), NULL, 0);
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xfree (serial);
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return 0;
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}
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return gpg_error (GPG_ERR_INV_NAME);
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}
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179
scd/app.c
179
scd/app.c
@ -264,11 +264,99 @@ app_new_register (int slot, ctrl_t ctrl, const char *name,
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if (!want_undefined)
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{
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err = iso7816_select_file (slot, 0x3F00, 1);
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if (!err)
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if (gpg_err_code (err) == GPG_ERR_CARD)
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{
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/* Might be SW==0x7D00. Let's test whether it is a Yubikey
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* by selecting its manager application and then reading the
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* config. */
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static char const yk_aid[] =
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{ 0xA0, 0x00, 0x00, 0x05, 0x27, 0x47, 0x11, 0x17 }; /*MGR*/
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static char const otp_aid[] =
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{ 0xA0, 0x00, 0x00, 0x05, 0x27, 0x20, 0x01 }; /*OTP*/
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unsigned char *buf;
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size_t buflen;
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const unsigned char *s0;
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unsigned char formfactor;
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size_t n;
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if (!iso7816_select_application (slot, yk_aid, sizeof yk_aid,
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0x0001)
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&& !iso7816_apdu_direct (slot, "\x00\x1d\x00\x00\x00", 5, 0,
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NULL, &buf, &buflen))
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{
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app->cardtype = CARDTYPE_YUBIKEY;
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if (opt.verbose)
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{
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log_info ("Yubico: config=");
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log_printhex (buf, buflen, "");
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}
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/* We skip the first byte which seems to be the total
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* length of the config data. */
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if (buflen > 1)
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{
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s0 = find_tlv (buf+1, buflen-1, 0x04, &n); /* Form factor */
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formfactor = (s0 && n == 1)? *s0 : 0;
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s0 = find_tlv (buf+1, buflen-1, 0x02, &n); /* Serial */
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if (s0 && n >= 4)
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{
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app->serialno = xtrymalloc (3 + 1 + n);
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if (app->serialno)
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{
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app->serialnolen = 3 + 1 + n;
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app->serialno[0] = 0xff;
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app->serialno[1] = 0x02;
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app->serialno[2] = 0x0;
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app->serialno[3] = formfactor;
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memcpy (app->serialno + 4, s0, n);
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err = app_munge_serialno (app);
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}
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}
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s0 = find_tlv (buf+1, buflen-1, 0x05, &n); /* version */
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if (s0 && n == 3)
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app->cardversion = ((s0[0]<<16)|(s0[1]<<8)|s0[2]);
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else if (!s0)
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{
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/* No version - this is not a Yubikey 5. We now
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* switch to the OTP app and take the first
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* three bytes of the response as version
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* number. */
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xfree (buf);
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buf = NULL;
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if (!iso7816_select_application_ext (slot,
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otp_aid, sizeof otp_aid,
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1, &buf, &buflen)
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&& buflen > 3)
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app->cardversion = ((buf[0]<<16)|(buf[1]<<8)|buf[2]);
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}
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}
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xfree (buf);
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}
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}
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else
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{
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unsigned char *atr;
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size_t atrlen;
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/* This is heuristics to identify different implementations. */
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atr = apdu_get_atr (slot, &atrlen);
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if (atr)
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{
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if (atrlen == 21 && atr[2] == 0x11)
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app->cardtype = CARDTYPE_GNUK;
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else if (atrlen == 21 && atr[7] == 0x75)
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app->cardtype = CARDTYPE_ZEITCONTROL;
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xfree (atr);
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}
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}
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if (!err && app->cardtype != CARDTYPE_YUBIKEY)
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err = iso7816_select_file (slot, 0x2F02, 0);
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if (!err)
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if (!err && app->cardtype != CARDTYPE_YUBIKEY)
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err = iso7816_read_binary (slot, 0, 0, &result, &resultlen);
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if (!err)
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if (!err && app->cardtype != CARDTYPE_YUBIKEY)
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{
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size_t n;
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const unsigned char *p;
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@ -320,6 +408,7 @@ app_new_register (int slot, ctrl_t ctrl, const char *name,
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else
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err = gpg_error (GPG_ERR_NOT_FOUND);
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/* Fixme: Use a table like we do in 2.3. */
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if (err && is_app_allowed ("openpgp")
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&& (!name || !strcmp (name, "openpgp")))
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err = app_select_openpgp (app);
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@ -616,6 +705,90 @@ app_get_serialno (app_t app)
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}
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/* Return an allocated string with the serial number in a format to be
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* show to the user. With NOFALLBACK set to true return NULL if such an
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* abbreviated S/N is not available, else return the full serial
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* number as a hex string. May return NULL on malloc problem. */
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char *
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app_get_dispserialno (app_t app, int nofallback)
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{
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char *result, *p;
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unsigned long sn;
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if (app && app->serialno && app->serialnolen == 3+1+4
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&& !memcmp (app->serialno, "\xff\x02\x00", 3))
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{
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/* This is a 4 byte S/N of a Yubikey which seems to be printed
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* on the token in decimal. Maybe they will print larger S/N
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* also in decimal but we can't be sure, thus do it only for
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* these 32 bit numbers. */
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sn = app->serialno[4] * 16777216;
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sn += app->serialno[5] * 65536;
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sn += app->serialno[6] * 256;
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sn += app->serialno[7];
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if ((app->cardversion >> 16) >= 5)
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result = xtryasprintf ("%lu %03lu %03lu",
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(sn/1000000ul),
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(sn/1000ul % 1000ul),
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(sn % 1000ul));
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else
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result = xtryasprintf ("%lu", sn);
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}
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else if (app && app->cardtype == CARDTYPE_YUBIKEY)
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{
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/* Get back the printed Yubikey number from the OpenPGP AID
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* Example: D2760001240100000006120808620000
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*/
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result = app_get_serialno (app);
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if (result && strlen (result) >= 28 && !strncmp (result+16, "0006", 4))
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{
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sn = atoi_4 (result+20) * 10000;
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sn += atoi_4 (result+24);
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if ((app->cardversion >> 16) >= 5)
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p = xtryasprintf ("%lu %03lu %03lu",
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(sn/1000000ul),
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(sn/1000ul % 1000ul),
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(sn % 1000ul));
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else
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p = xtryasprintf ("%lu", sn);
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if (p)
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{
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xfree (result);
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result = p;
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}
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}
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else if (nofallback)
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{
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xfree (result);
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result = NULL;
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}
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}
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else if (app && app->apptype == APPTYPE_OPENPGP)
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{
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/* Extract number from standard OpenPGP AID. */
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result = app_get_serialno (app);
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if (result && strlen (result) > 16+12)
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{
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memcpy (result, result+16, 4);
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result[4] = ' ';
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memcpy (result+5, result+20, 8);
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result[13] = 0;
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}
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else if (nofallback)
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{
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xfree (result);
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result = NULL;
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}
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}
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else if (nofallback)
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result = NULL; /* No Abbreviated S/N. */
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else
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result = app_get_serialno (app);
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return result;
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}
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/* Write out the application specifig status lines for the LEARN
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command. */
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gpg_error_t
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