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Code Activity

agent: Fix YK s/n and prettify the request card prompt for Yubikeys

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* agent/divert-scd.c (ask_for_card): Detect and re-format the Yubikey
prompt.
* scd/app.c (app_munge_serialno): Fix Yubikey s/n munging.
(card_get_dispserialno): Ditto.
* scd/app-openpgp.c (get_disp_serialno): Remove.
(get_prompt_info): Use app_get_dispserialno.--
--
This commit is contained in:
Werner Koch 2020-11-26 12:36:44 +01:00
parent d784e76349
commit 7113263a00
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
3 changed files with 39 additions and 38 deletions
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23
agent/divert-scd.c
View File

@ -59,10 +59,25 @@ ask_for_card (ctrl_t ctrl, const unsigned char *shadow_info,
if (len == 32 && !strncmp (want_sn, "D27600012401", 12))
{
/* This is an OpenPGP card - reformat */
memmove (want_sn, want_sn+16, 4);
want_sn[4] = ' ';
memmove (want_sn+5, want_sn+20, 8);
want_sn[13] = 0;
if (!strncmp (want_sn+16, "0006", 4))
{
/* This is a Yubikey. Print the s/n as it would be printed
* on Yubikey 5. Example: D2760001240100000006120808620000
* mmmm^^^^^^^^ */
unsigned long sn;
sn = atoi_4 (want_sn+20) * 10000;
sn += atoi_4 (want_sn+24);
snprintf (want_sn, 32, "%lu %03lu %03lu",
(sn/1000000ul), (sn/1000ul % 1000ul), (sn % 1000ul));
}
else /* Default is the Zeitcontrol card print format. */
{
memmove (want_sn, want_sn+16, 4);
want_sn[4] = ' ';
memmove (want_sn+5, want_sn+20, 8);
want_sn[13] = 0;
}
}
else if (len == 20 && want_sn[19] == '0')
{

26
scd/app-openpgp.c
View File

@ -1381,30 +1381,6 @@ get_disp_name (app_t app)
}
/* Return the pretty formatted serialnumber. On error NULL is
* returned. */
static char *
get_disp_serialno (app_t app)
{
char *serial = app_get_serialno (app);
/* For our OpenPGP cards we do not want to show the entire serial
* number but a nicely reformatted actual serial number. */
if (serial && strlen (serial) > 16+12)
{
memmove (serial, serial+16, 4);
serial[4] = ' ';
/* memmove (serial+5, serial+20, 4); */
/* serial[9] = ' '; */
/* memmove (serial+10, serial+24, 4); */
/* serial[14] = 0; */
memmove (serial+5, serial+20, 8);
serial[13] = 0;
}
return serial;
}
/* Return the number of remaining tries for the standard or the admin
* pw. Returns -1 on card error. */
static int
@ -2324,7 +2300,7 @@ get_prompt_info (app_t app, int chvno, unsigned long sigcount, int remaining)
{
char *serial, *disp_name, *rembuf, *tmpbuf, *result;
serial = get_disp_serialno (app);
serial = app_get_dispserialno (app, 0);
if (!serial)
return NULL;

28
scd/app.c
View File

@ -1208,10 +1208,22 @@ app_munge_serialno (card_t card)
buf[7] = 0; /* thus we use 0.0 and don't use this directly. */
buf[8] = 0; /* Manufacturer: Yubico (0x0006). */
buf[9] = 6;
buf[10] = (sn >> 24);
buf[11] = (sn >> 16);
buf[12] = (sn >> 8);
buf[13] = sn;
buf[13] = (sn % 10);
sn /= 10;
buf[13] |= (sn % 10) << 4;
sn /= 10;
buf[12] = (sn % 10);
sn /= 10;
buf[12] |= (sn % 10) << 4;
sn /= 10;
buf[11] = (sn % 10);
sn /= 10;
buf[11] |= (sn % 10) << 4;
sn /= 10;
buf[10] = (sn % 10);
sn /= 10;
buf[10] |= (sn % 10) << 4;
sn /= 10;
buf[14] = 0; /* Last two bytes are RFU. */
buf[15] = 0;
xfree (card->serialno);
@ -1311,15 +1323,13 @@ card_get_dispserialno (card_t card, int nofallback)
else if (card && card->cardtype == CARDTYPE_YUBIKEY)
{
/* Get back the printed Yubikey number from the OpenPGP AID
* Example: D2760001240100000006008A77C10000
* Example: D2760001240100000006120808620000
*/
result = card_get_serialno (card);
if (result && strlen (result) >= 28 && !strncmp (result+16, "0006", 4))
{
sn = xtoi_2 (result+20) * 16777216;
sn += xtoi_2 (result+22) * 65536;
sn += xtoi_2 (result+24) * 256;
sn += xtoi_2 (result+26);
sn = atoi_4 (result+20) * 10000;
sn += atoi_4 (result+24);
if ((card->cardversion >> 16) >= 5)
p = xtryasprintf ("%lu %03lu %03lu",
(sn/1000000ul),