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Code Activity

* call-scd.c (inq_needpin): Skip leading spaces in of PIN

Browse Source 
description.
* divert-scd.c (getpin_cb): Enhanced to cope with description
flags.
* query.c (agent_askpin): Add arg PROMPT_TEXT. Changed all
callers.
This commit is contained in:
Werner Koch 2005-05-24 12:37:36 +00:00
parent a43586d0e8
commit e96af3715b
10 changed files with 121 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
TODO
View File

@ -96,11 +96,3 @@ might want to have an agent context for each service request
* IMPORTANT:
Check that the PIN cache is cleared after failed card operations.
After receiving a HUP gpg-agent should set a flag to kill scdaemon
as soon as possible, w/o that scdaemon will continue running as a
zombie and gpg-agent won't be able to fire up a new one.
Implement an scd/agent option to wait for a card.

9
agent/ChangeLog
View File

@ -1,3 +1,12 @@
2005-05-24 Werner Koch <wk@g10code.com>
* call-scd.c (inq_needpin): Skip leading spaces in of PIN
description.
* divert-scd.c (getpin_cb): Enhanced to cope with description
flags.
* query.c (agent_askpin): Add arg PROMPT_TEXT. Changed all
callers.
2005-05-21 Werner Koch <wk@g10code.com>
* call-scd.c (start_scd): Don't test for an alive scdaemon here.

3
agent/agent.h
View File

@ -179,7 +179,8 @@ int agent_key_available (const unsigned char *grip);
/*-- query.c --*/
void initialize_module_query (void);
int agent_askpin (ctrl_t ctrl,
const char *desc_text, const char *inital_errtext,
const char *desc_text, const char *prompt_text,
const char *inital_errtext,
struct pin_entry_info_s *pininfo);
int agent_get_passphrase (ctrl_t ctrl, char **retpass,
const char *desc, const char *prompt,

2
agent/call-scd.c
View File

@ -601,6 +601,8 @@ inq_needpin (void *opaque, const char *line)
return ASSUAN_Inquire_Unknown;
}
line += 7;
while (*line == ' ')
line++;
pinlen = 90;
pin = gcry_malloc_secure (pinlen);

2
agent/command-ssh.c
View File

@ -2369,7 +2369,7 @@ ssh_identity_register (ctrl_t ctrl, gcry_sexp_t key, int ttl)
}
pi->max_length = 100;
pi->max_tries = 1;
err = agent_askpin (ctrl, description, NULL, pi);
err = agent_askpin (ctrl, description, NULL, NULL, pi);
if (err)
goto out;

100
agent/divert-scd.c
View File

@ -168,35 +168,113 @@ encode_md_for_card (const unsigned char *digest, size_t digestlen, int algo,
buf has been allocated by the caller and is of size MAXBUF which
includes the terminating null. The function should return an UTF-8
string with the passphrase, the buffer may optionally be padded
with arbitrary characters */
with arbitrary characters.
INFO gets displayed as part of a generic string. However if the
first character of INFO is a vertical bar all up to the next
verical bar are considered flags and only everything after the
second vertical bar gets displayed as the full prompt.
Flags:
'N' = New PIN, this requests a second prompt to repeat the the
PIN. If the PIN is not correctly repeated it starts from
all over.
'A' = The PIN is an Admin PIN, SO-PIN, PUK or alike.
Example:
"|AN|Please enter the new security officer's PIN"
The text "Please ..." will get displayed and the flags 'A' and 'N'
are considered.
*/
static int
getpin_cb (void *opaque, const char *info, char *buf, size_t maxbuf)
{
struct pin_entry_info_s *pi;
int rc;
char *desc;
CTRL ctrl = opaque;
ctrl_t ctrl = opaque;
const char *ends, *s;
int any_flags = 0;
int newpin = 0;
const char *again_text = NULL;
const char *prompt = "PIN";
if (maxbuf < 2)
return gpg_error (GPG_ERR_INV_VALUE);
/* Parse the flags. */
if (info && *info =='|' && (ends=strchr (info+1, '|')))
{
for (s=info+1; s < ends; s++)
{
if (*s == 'A')
prompt = _("Admin PIN");
else if (*s == 'N')
newpin = 1;
}
info = ends+1;
any_flags = 1;
}
else if (info && *info == '|')
log_debug ("pin_cb called without proper PIN info hack\n");
/* FIXME: keep PI and TRIES in OPAQUE. Frankly this is a whole
mess because we should call the card's verify function from the
pinentry check pin CB. */
pi = gcry_calloc_secure (1, sizeof (*pi) + 100);
again:
pi = gcry_calloc_secure (1, sizeof (*pi) + maxbuf + 10);
if (!pi)
return gpg_error_from_errno (errno);
pi->max_length = maxbuf-1;
pi->min_digits = 0; /* we want a real passphrase */
pi->max_digits = 8;
pi->max_tries = 3;
if ( asprintf (&desc, _("Please enter the PIN%s%s%s to unlock the card"),
info? " (`":"",
info? info:"",
info? "')":"") < 0)
desc = NULL;
rc = agent_askpin (ctrl, desc?desc:info, NULL, pi);
free (desc);
if (any_flags)
{
rc = agent_askpin (ctrl, info, prompt, again_text, pi);
again_text = NULL;
if (!rc && newpin)
{
struct pin_entry_info_s *pi2;
pi2 = gcry_calloc_secure (1, sizeof (*pi) + maxbuf + 10);
if (!pi2)
{
rc = gpg_error_from_errno (errno);
xfree (pi);
return rc;
}
pi2->max_length = maxbuf-1;
pi2->min_digits = 0;
pi2->max_digits = 8;
pi2->max_tries = 1;
rc = agent_askpin (ctrl, _("Repeat this PIN"), prompt, NULL, pi2);
if (!rc && strcmp (pi->pin, pi2->pin))
{
again_text = N_("PIN not correctly repeated; try again");
xfree (pi2);
xfree (pi);
goto again;
}
xfree (pi2);
}
}
else
{
char *desc;
if ( asprintf (&desc,
_("Please enter the PIN%s%s%s to unlock the card"),
info? " (`":"",
info? info:"",
info? "')":"") < 0)
desc = NULL;
rc = agent_askpin (ctrl, desc?desc:info, prompt, NULL, pi);
free (desc);
}
if (!rc)
{
strncpy (buf, pi->pin, maxbuf-1);

2
agent/findkey.c
View File

@ -276,7 +276,7 @@ unprotect (CTRL ctrl, const char *desc_text,
arg.unprotected_key = NULL;
pi->check_cb_arg = &arg;
rc = agent_askpin (ctrl, desc_text, NULL, pi);
rc = agent_askpin (ctrl, desc_text, NULL, NULL, pi);
if (!rc)
{
assert (arg.unprotected_key);

8
agent/genkey.c
View File

@ -120,11 +120,11 @@ agent_genkey (CTRL ctrl, const char *keyparam, size_t keyparamlen,
pi2->check_cb_arg = pi->pin;
next_try:
rc = agent_askpin (ctrl, text1, initial_errtext, pi);
rc = agent_askpin (ctrl, text1, NULL, initial_errtext, pi);
initial_errtext = NULL;
if (!rc)
{
rc = agent_askpin (ctrl, text2, NULL, pi2);
rc = agent_askpin (ctrl, text2, NULL, NULL, pi2);
if (rc == -1)
{ /* The re-entered one did not match and the user did not
hit cancel. */
@ -228,10 +228,10 @@ agent_protect_and_store (CTRL ctrl, gcry_sexp_t s_skey)
pi2->check_cb_arg = pi->pin;
next_try:
rc = agent_askpin (ctrl, text1, initial_errtext, pi);
rc = agent_askpin (ctrl, text1, NULL, initial_errtext, pi);
if (!rc)
{
rc = agent_askpin (ctrl, text2, NULL, pi2);
rc = agent_askpin (ctrl, text2, NULL, NULL, pi2);
if (rc == -1)
{ /* The re-entered one did not match and the user did not
hit cancel. */

18
agent/query.c
View File

@ -288,8 +288,9 @@ all_digitsp( const char *s)
number here and repeat it as long as we have invalid formed
numbers. */
int
agent_askpin (CTRL ctrl,
const char *desc_text, const char *initial_errtext,
agent_askpin (ctrl_t ctrl,
const char *desc_text, const char *prompt_text,
const char *initial_errtext,
struct pin_entry_info_s *pininfo)
{
int rc;
@ -310,7 +311,10 @@ agent_askpin (CTRL ctrl,
desc_text = _("Please enter your passphrase, so that the secret key "
"can be unlocked for this session");
is_pin = desc_text && strstr (desc_text, "PIN");
if (prompt_text)
is_pin = !!strstr (prompt_text, "PIN");
else
is_pin = desc_text && strstr (desc_text, "PIN");
rc = start_pinentry (ctrl);
if (rc)
@ -322,10 +326,10 @@ agent_askpin (CTRL ctrl,
if (rc)
return unlock_pinentry (map_assuan_err (rc));
rc = assuan_transact (entry_ctx,
is_pin? "SETPROMPT PIN:"
: "SETPROMPT Passphrase:",
NULL, NULL, NULL, NULL, NULL, NULL);
snprintf (line, DIM(line)-1, "SETPROMPT %s",
prompt_text? prompt_text : is_pin? "PIN:" : "Passphrase:");
line[DIM(line)-1] = 0;
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
if (rc)
return unlock_pinentry (map_assuan_err (rc));

4
scd/app-openpgp.c
View File

@ -1528,7 +1528,7 @@ do_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr, int reset_mode,
/* Check whether a key already exists. KEYIDX is the index of the key
(0..2). If FORCE is TRUE a diagnositivc will be printed but no
(0..2). If FORCE is TRUE a diagnositic will be printed but no
error returned if the key already exists. */
static gpg_error_t
does_key_exist (app_t app, int keyidx, int force)
@ -2134,7 +2134,7 @@ do_sign (app_t app, const char *keyidstr, int hashalgo,
{
char *prompt;
#define PROMPTSTRING _("PIN [sigs done: %lu]")
#define PROMPTSTRING _("||Please enter the PIN%%0A[sigs done: %lu]")
prompt = malloc (strlen (PROMPTSTRING) + 50);
if (!prompt)