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scd: Support GET DATA response with no header for DO 0x00FA.

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* scd/app-openpgp.c (do_getattr): Support Gnuk, as well.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2020-09-04 17:16:59 +09:00
parent eba2563dab
commit 43bbc25b0f
1 changed files with 28 additions and 25 deletions
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53
scd/app-openpgp.c
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@ -1256,36 +1256,39 @@ do_getattr (app_t app, ctrl_t ctrl, const char *name)
if (valuelen < 2) if (valuelen < 2)
return gpg_error (GPG_ERR_INV_OBJ); return gpg_error (GPG_ERR_INV_OBJ);
tag = *p++; tag = p[0];
len = *p++; len = p[1];
if (tag != 0x00FA) /* Does it comes tag+len at the head? */
return gpg_error (GPG_ERR_INV_OBJ); if (tag == 0x00FA)
if (len == 0x81)
{ {
if (valuelen < 3) p += 2;
return gpg_error (GPG_ERR_INV_OBJ);
len = *p++;
}
else if (len == 0x82)
{
if (valuelen < 4)
return gpg_error (GPG_ERR_INV_OBJ);
len = *p++;
len = (len << 8) | *p++;
}
valuelen -= (p - value); if (len == 0x81)
value = p; {
if (valuelen < 3)
return gpg_error (GPG_ERR_INV_OBJ);
len = *p++;
}
else if (len == 0x82)
{
if (valuelen < 4)
return gpg_error (GPG_ERR_INV_OBJ);
len = *p++;
len = (len << 8) | *p++;
}
if (valuelen != len) valuelen -= (p - value);
{ value = (unsigned char *)p;
if (opt.verbose)
log_info ("Yubikey bug: length %zu != %zu", valuelen, len);
if (app->card->cardtype != CARDTYPE_YUBIKEY) if (valuelen != len)
return gpg_error (GPG_ERR_INV_OBJ); {
if (opt.verbose)
log_info ("Yubikey bug: length %zu != %zu", valuelen, len);
if (app->card->cardtype != CARDTYPE_YUBIKEY)
return gpg_error (GPG_ERR_INV_OBJ);
}
} }
for (; p < value + valuelen; p += len) for (; p < value + valuelen; p += len)