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Code Activity

Show passphrase constraints errors as password prompt errors

Browse Source 
* agent/agent.h (check_passphrase_constraints): Add parameter
failed_constraint and remove parameter silent.  Update callers.
* agent/genkey.c (check_passphrase_constraints): Add parameter
failed_constraint and remove parameter silent.  If FAILED_CONSTRAINT
is not NULL and OPT.ENFORCE_PASSPHRASE_CONSTRAINTS is FALSE, save the
error text in *FAILED_CONSTRAINT and don't call take_this_one_anyway
or take_this_one_anyway2.  If FAILED_CONSTRAINT is NULL, act as if
SILENT was set.
(agent_ask_new_passphrase): Change initial_errtext's type from a const
char * to a char *.  Pass it to check_passphrase_constraints.  If it
contains malloc's memory, free it.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>

Based on a patch provided by Watson Yuuma Sato <yuuma.sato@gmail.com>
in issue 2018.
This commit is contained in:
Neal H. Walfield 2015-06-18 00:10:47 -03:00 committed by Neal H. Walfield
parent 0416aed4ab
commit 2778c6f8f4
4 changed files with 49 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
agent/agent.h
View File

@ -1,5 +1,6 @@
/* agent.h - Global definitions for the agent
* Copyright (C) 2001, 2002, 2003, 2005, 2011 Free Software Foundation, Inc.
* Copyright (C) 2015 g10 Code GmbH.
*
* This file is part of GnuPG.
*
@ -412,7 +413,8 @@ int agent_pkdecrypt (ctrl_t ctrl, const char *desc_text,
membuf_t *outbuf, int *r_padding);
/*-- genkey.c --*/
int check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent);
int check_passphrase_constraints (ctrl_t ctrl, const char *pw,
char **failed_constraint);
gpg_error_t agent_ask_new_passphrase (ctrl_t ctrl, const char *prompt,
char **r_passphrase);
int agent_genkey (ctrl_t ctrl, const char *cache_nonce,

2
agent/call-pinentry.c
View File

@ -675,7 +675,7 @@ inq_quality (void *opaque, const char *line)
else
{
percent = estimate_passphrase_quality (pin);
if (check_passphrase_constraints (NULL, pin, 1))
if (check_passphrase_constraints (NULL, pin, NULL))
percent = -percent;
snprintf (numbuf, sizeof numbuf, "%d", percent);
rc = assuan_send_data (ctx, numbuf, strlen (numbuf));

16
agent/command.c
View File

@ -1,6 +1,7 @@
/* command.c - gpg-agent command handler
* Copyright (C) 2001-2011 Free Software Foundation, Inc.
* Copyright (C) 2001-2013 Werner Koch
* Copyright (C) 2015 g10 Code GmbH.
*
* This file is part of GnuPG.
*
@ -1438,7 +1439,7 @@ cmd_get_passphrase (assuan_context_t ctx, char *line)
char *p;
int opt_data, opt_check, opt_no_ask, opt_qualbar;
int opt_repeat = 0;
char *repeat_errtext = NULL;
char *entry_errtext = NULL;
if (ctrl->restricted)
return leave_cmd (ctx, gpg_error (GPG_ERR_FORBIDDEN));
@ -1522,15 +1523,16 @@ cmd_get_passphrase (assuan_context_t ctx, char *line)
next_try:
rc = agent_get_passphrase (ctrl, &response, desc, prompt,
repeat_errtext? repeat_errtext:errtext,
entry_errtext? entry_errtext:errtext,
opt_qualbar, cacheid, CACHE_MODE_USER);
xfree (repeat_errtext);
repeat_errtext = NULL;
xfree (entry_errtext);
entry_errtext = NULL;
if (!rc)
{
int i;
if (opt_check && check_passphrase_constraints (ctrl, response, 0))
if (opt_check
&& check_passphrase_constraints (ctrl, response, &entry_errtext))
{
xfree (response);
goto next_try;
@ -1548,9 +1550,9 @@ cmd_get_passphrase (assuan_context_t ctx, char *line)
{
xfree (response2);
xfree (response);
repeat_errtext = try_percent_escape
entry_errtext = try_percent_escape
(_("does not match - try again"), NULL);
if (!repeat_errtext)
if (!entry_errtext)
{
rc = gpg_error_from_syserror ();
break;

52
agent/genkey.c
View File

@ -1,5 +1,6 @@
/* genkey.c - Generate a keypair
* Copyright (C) 2002, 2003, 2004, 2007, 2010 Free Software Foundation, Inc.
* Copyright (C) 2015 g10 Code GmbH.
*
* This file is part of GnuPG.
*
@ -174,10 +175,12 @@ take_this_one_anyway (ctrl_t ctrl, const char *desc)
/* Check whether the passphrase PW is suitable. Returns 0 if the
passphrase is suitable and true if it is not and the user should be
asked to provide a different one. If SILENT is set, no message are
displayed. */
asked to provide a different one. If FAILED_CONSTRAINT is set, a
message describing the problem is returned in
*FAILED_CONSTRAINT. */
int
check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
check_passphrase_constraints (ctrl_t ctrl, const char *pw,
char **failed_constraint)
{
gpg_error_t err = 0;
unsigned int minlen = opt.min_passphrase_len;
@ -200,11 +203,16 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
"Please confirm that you do not want to "
"have any protection on your key."));
if (silent)
return gpg_error (GPG_ERR_INV_PASSPHRASE);
err = 1;
if (failed_constraint)
{
if (opt.enforce_passphrase_constraints)
*failed_constraint = xstrdup (desc);
else
err = take_this_one_anyway2 (ctrl, desc,
_("Yes, protection is not needed"));
}
err = take_this_one_anyway2 (ctrl, desc,
_("Yes, protection is not needed"));
goto leave;
}
@ -212,7 +220,7 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
in in silent mode which returns immediately. */
if (utf8_charcount (pw) < minlen )
{
if (silent)
if (!failed_constraint)
{
err = gpg_error (GPG_ERR_INV_PASSPHRASE);
goto leave;
@ -231,7 +239,7 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
if (nonalpha_count (pw) < minnonalpha )
{
if (silent)
if (!failed_constraint)
{
err = gpg_error (GPG_ERR_INV_PASSPHRASE);
goto leave;
@ -257,7 +265,7 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
if (*pw && opt.check_passphrase_pattern &&
check_passphrase_pattern (ctrl, pw))
{
if (silent)
if (!failed_constraint)
{
err = gpg_error (GPG_ERR_INV_PASSPHRASE);
goto leave;
@ -273,7 +281,7 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
}
}
if (msg1 || msg2 || msg3)
if (failed_constraint && (msg1 || msg2 || msg3))
{
char *msg;
size_t n;
@ -295,9 +303,14 @@ check_passphrase_constraints (ctrl_t ctrl, const char *pw, int silent)
if (n > 3 && !strcmp (msg + n - 3, "%0A"))
msg[n-3] = 0;
/* Show error messages. */
err = take_this_one_anyway (ctrl, msg);
xfree (msg);
err = 1;
if (opt.enforce_passphrase_constraints)
*failed_constraint = msg;
else
{
err = take_this_one_anyway (ctrl, msg);
xfree (msg);
}
}
leave:
@ -333,7 +346,8 @@ agent_ask_new_passphrase (ctrl_t ctrl, const char *prompt,
gpg_error_t err;
const char *text1 = prompt;
const char *text2 = _("Please re-enter this passphrase");
const char *initial_errtext = NULL;
char *initial_errtext = NULL;
int initial_errtext_do_free = 0;
struct pin_entry_info_s *pi, *pi2;
*r_passphrase = NULL;
@ -371,11 +385,17 @@ agent_ask_new_passphrase (ctrl_t ctrl, const char *prompt,
next_try:
err = agent_askpin (ctrl, text1, NULL, initial_errtext, pi, NULL, 0);
if (initial_errtext_do_free)
{
xfree (initial_errtext);
initial_errtext_do_free = 0;
}
initial_errtext = NULL;
if (!err)
{
if (check_passphrase_constraints (ctrl, pi->pin, 0))
if (check_passphrase_constraints (ctrl, pi->pin, &initial_errtext))
{
initial_errtext_do_free = 1;
pi->failed_tries = 0;
pi2->failed_tries = 0;
goto next_try;