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g10,scd: Improve UIF support.

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* g10/call-agent.c (learn_status_cb): Parse "bt" flag.
* g10/call-agent.h: New member field "bt".
* g10/card-util.c (uif): Limit its access only when it is supported.
* scd/app-openpgp.c (do_setattr): Allow access to UIF objects only
when there is a button.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2018-10-25 16:20:20 +09:00
parent 54eb375ff1
commit 0240345728
4 changed files with 30 additions and 3 deletions
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2
g10/call-agent.c
View File

@ -609,6 +609,8 @@ learn_status_cb (void *opaque, const char *line)
parm->extcap.ki = abool;
else if (!strcmp (p, "aac"))
parm->extcap.aac = abool;
else if (!strcmp (p, "bt"))
parm->extcap.bt = abool;
else if (!strcmp (p, "kdf"))
parm->extcap.kdf = abool;
else if (!strcmp (p, "si"))

1
g10/call-agent.h
View File

@ -69,6 +69,7 @@ struct agent_card_info_s
unsigned int ki:1; /* Key import available. */
unsigned int aac:1; /* Algorithm attributes are changeable. */
unsigned int kdf:1; /* KDF object to support PIN hashing available. */
unsigned int bt:1; /* Button for confirmation available. */
} extcap;
unsigned int status_indicator;
};

21
g10/card-util.c
View File

@ -2114,10 +2114,31 @@ kdf_setup (const char *args)
static void
uif (int arg_number, const char *arg_rest)
{
struct agent_card_info_s info;
int feature_available;
gpg_error_t err;
char name[100];
unsigned char data[2];
memset (&info, 0, sizeof info);
err = agent_scd_getattr ("EXTCAP", &info);
if (err)
{
log_error (_("error getting card info: %s\n"), gpg_strerror (err));
return;
}
feature_available = info.extcap.bt;
agent_release_card_info (&info);
if (!feature_available)
{
log_error (_("This command is not supported by this card\n"));
tty_printf ("\n");
return;
}
snprintf (name, sizeof name, "UIF-%d", arg_number);
if ( !strcmp (arg_rest, "off") )
data[0] = 0x00;

9
scd/app-openpgp.c
View File

@ -2468,9 +2468,9 @@ do_setattr (app_t app, const char *name,
{ "SM-KEY-MAC", 0x00D2, 3, 0, 1 },
{ "KEY-ATTR", 0, 0, 3, 1 },
{ "AESKEY", 0x00D5, 3, 0, 1 },
{ "UIF-1", 0x00D6, 3, 0, 1 },
{ "UIF-2", 0x00D7, 3, 0, 1 },
{ "UIF-3", 0x00D8, 3, 0, 1 },
{ "UIF-1", 0x00D6, 3, 5, 1 },
{ "UIF-2", 0x00D7, 3, 5, 1 },
{ "UIF-3", 0x00D8, 3, 5, 1 },
{ "KDF", 0x00F9, 3, 4, 1 },
{ NULL, 0 }
};
@ -2483,6 +2483,9 @@ do_setattr (app_t app, const char *name,
if (table[idx].need_v2 && !app->app_local->extcap.is_v2)
return gpg_error (GPG_ERR_NOT_SUPPORTED); /* Not yet supported. */
if (table[idx].special == 5 && app->app_local->extcap.has_button == 0)
return gpg_error (GPG_ERR_INV_OBJ);
if (table[idx].special == 3)
return change_keyattr_from_string (app, pincb, pincb_arg, value, valuelen);