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* passphrase.c (read_passphrase_from_fd): Do a dummy read if the

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agent is to be used.  Noted by Ingo Kl�cker.
(agent_get_passphrase): Inhibit caching when we have no
fingerprint.  This is required for key generation as well as for
symmetric only encryption.

* passphrase .c (agent_get_passphrase): New arg CANCELED.
(passphrase_to_dek): Ditto.  Passed to above.  Changed all
callers to pass NULL.
* seckey-cert.c (do_check): New arg CANCELED.
(check_secret_key): Terminate loop when canceled.

* keyedit.c (change_passphrase): Pass ERRTEXT untranslated to
passphrase_to_dek and translate where appropriate.
* seckey-cert.c (check_secret_key): Ditto.
* keygen.c (ask_passphrase): Ditto.
* passphrase.c (agent_get_passphrase): Translate the TRYAGAIN_TEXT.
Switch the codeset to utf-8.
This commit is contained in:
Werner Koch 2003-04-10 09:56:47 +00:00
parent 3cf45b304e
commit 6b55878912
11 changed files with 178 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
g10/ChangeLog
View File

@ -1,3 +1,30 @@
2003-04-10 Werner Koch <wk@gnupg.org>
* passphrase.c (read_passphrase_from_fd): Do a dummy read if the
agent is to be used. Noted by Ingo Klöcker.
(agent_get_passphrase): Inhibit caching when we have no
fingerprint. This is required for key generation as well as for
symmetric only encryption.
* passphrase .c (agent_get_passphrase): New arg CANCELED.
(passphrase_to_dek): Ditto. Passed to above. Changed all
callers to pass NULL.
* seckey-cert.c (do_check): New arg CANCELED.
(check_secret_key): Terminate loop when canceled.
* keyedit.c (change_passphrase): Pass ERRTEXT untranslated to
passphrase_to_dek and translate where appropriate.
* seckey-cert.c (check_secret_key): Ditto.
* keygen.c (ask_passphrase): Ditto.
* passphrase.c (agent_get_passphrase): Translate the TRYAGAIN_TEXT.
Switch the codeset to utf-8.
2003-04-09 Werner Koch <wk@gnupg.org>
* decrypt.c (decrypt_messages): Fixed error handling; the function
used to re-loop with same file after an error. Reported by Joseph
Walton.
2003-04-08 David Shaw <dshaw@jabberwocky.com>
* main.h, g10.c (main), import.c (parse_import_options,

20
g10/decrypt.c
View File

@ -1,5 +1,5 @@
/* decrypt.c - verify signed data
* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
* Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -99,12 +99,12 @@ decrypt_messages(int nfiles, char **files)
print_file_status(STATUS_FILE_START, *files, 3);
output = make_outfile_name(*files);
if (!output)
continue;
goto next_file;
fp = iobuf_open(*files);
if (!fp)
{
log_error(_("can't open `%s'\n"), print_fname_stdin(*files));
continue;
goto next_file;
}
if (!opt.no_armor)
{
@ -122,17 +122,13 @@ decrypt_messages(int nfiles, char **files)
p = get_last_passphrase();
set_next_passphrase(p);
m_free (p);
files++;
m_free(output);
next_file:
/* Note that we emit file_done even after an error. */
write_status( STATUS_FILE_DONE );
m_free(output);
files++;
}
set_next_passphrase(NULL);
}

3
g10/encode.c
View File

@ -194,7 +194,8 @@ encode_simple( const char *filename, int mode, int compat )
s2k->mode = opt.rfc1991? 0:opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
cfx.dek = passphrase_to_dek( NULL, 0,
default_cipher_algo(), s2k, 2, NULL );
default_cipher_algo(), s2k, 2,
NULL, NULL);
if( !cfx.dek || !cfx.dek->keylen ) {
rc = G10ERR_PASSPHRASE;
m_free(cfx.dek);

6
g10/gpgv.c
View File

@ -314,9 +314,11 @@ check_secret_key( PKT_secret_key *sk, int n )
DEK *
passphrase_to_dek( u32 *keyid, int pubkey_algo,
int cipher_algo, STRING2KEY *s2k, int mode,
const char *tmp)
const char *tmp, int *canceled)
{
return NULL;
if (canceled)
*canceled = 0;
return NULL;
}
/* Stubs to avoid linking to photoid.c */

2
g10/keydb.h
View File

@ -187,7 +187,7 @@ void read_passphrase_from_fd( int fd );
void passphrase_clear_cache ( u32 *keyid, int algo );
DEK *passphrase_to_dek( u32 *keyid, int pubkey_algo,
int cipher_algo, STRING2KEY *s2k, int mode,
const char *tryagain_text);
const char *tryagain_text, int *canceled);
void set_next_passphrase( const char *s );
char *get_last_passphrase(void);

6
g10/keyedit.c
View File

@ -915,10 +915,10 @@ change_passphrase( KBNODE keyblock )
s2k->mode = opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo,
s2k, 2, errtext);
s2k, 2, errtext, NULL);
if( !dek ) {
errtext = _("passphrase not correctly repeated; try again");
tty_printf ("%s.\n", errtext);
errtext = N_("passphrase not correctly repeated; try again");
tty_printf ("%s.\n", _(errtext));
}
else if( !dek->keylen ) {
rc = 0;

13
g10/keygen.c
View File

@ -1479,10 +1479,11 @@ ask_passphrase( STRING2KEY **ret_s2k )
for(;;) {
s2k->mode = opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k,2,errtext);
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k,2,
errtext, NULL);
if( !dek ) {
errtext = _("passphrase not correctly repeated; try again");
tty_printf(_("%s.\n"), errtext);
errtext = N_("passphrase not correctly repeated; try again");
tty_printf(_("%s.\n"), _(errtext));
}
else if( !dek->keylen ) {
m_free(dek); dek = NULL;
@ -1809,7 +1810,8 @@ proc_parameter_file( struct para_data_s *para, const char *fname,
s2k->mode = opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
set_next_passphrase( r->u.value );
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k, 2, NULL );
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k, 2,
NULL, NULL);
set_next_passphrase( NULL );
assert( dek );
memset( r->u.value, 0, strlen(r->u.value) );
@ -2476,7 +2478,8 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
s2k->mode = opt.s2k_mode;
s2k->hash_algo = opt.s2k_digest_algo;
set_next_passphrase( passphrase );
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k, 2, NULL );
dek = passphrase_to_dek( NULL, 0, opt.s2k_cipher_algo, s2k, 2,
NULL, NULL );
}
rc = do_create( algo, nbits, pub_keyblock, sec_keyblock,

4
g10/mainproc.c
View File

@ -292,7 +292,7 @@ proc_symkey_enc( CTX c, PACKET *pkt )
c->last_was_session_key = 2;
if ( opt.list_only )
goto leave;
c->dek = passphrase_to_dek( NULL, 0, algo, &enc->s2k, 0, NULL );
c->dek = passphrase_to_dek( NULL, 0, algo, &enc->s2k, 0, NULL, NULL );
if (c->dek)
c->dek->algo_info_printed = 1;
if ( c->dek && enc->seskeylen )
@ -486,7 +486,7 @@ proc_encrypted( CTX c, PACKET *pkt )
log_info (_("assuming %s encrypted data\n"), "IDEA");
}
c->dek = passphrase_to_dek ( NULL, 0, algo, s2k, 0, NULL );
c->dek = passphrase_to_dek ( NULL, 0, algo, s2k, 0, NULL, NULL );
if (c->dek)
c->dek->algo_info_printed = 1;
}

147
g10/passphrase.c
View File

@ -1,5 +1,5 @@
/* passphrase.c - Get a passphrase
* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
* Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -36,6 +36,9 @@
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef HAVE_LANGINFO_CODESET
#include <langinfo.h>
#endif
#include "util.h"
#include "memory.h"
@ -144,33 +147,44 @@ get_last_passphrase()
void
read_passphrase_from_fd( int fd )
{
int i, len;
char *pw;
int i, len;
char *pw;
if ( opt.use_agent )
{ /* Not used but we have to do a dummy read, so that it won't end
up at the begin of the message if the quite usual trick to
prepend the passphtrase to the message is used. */
char buf[1];
if ( opt.use_agent )
return; /* not used here */
if( !opt.batch )
tty_printf("Reading passphrase from file descriptor %d ...", fd );
for( pw = NULL, i = len = 100; ; i++ ) {
if( i >= len-1 ) {
char *pw2 = pw;
len += 100;
pw = m_alloc_secure( len );
if( pw2 )
memcpy(pw, pw2, i );
else
i=0;
}
if( read( fd, pw+i, 1) != 1 || pw[i] == '\n' )
break;
while (!(read (fd, buf, 1) != 1 || *buf == '\n' ))
;
*buf = 0;
return;
}
pw[i] = 0;
if( !opt.batch )
tty_printf("\b\b\b \n" );
m_free( fd_passwd );
fd_passwd = pw;
if (!opt.batch )
tty_printf("Reading passphrase from file descriptor %d ...", fd );
for (pw = NULL, i = len = 100; ; i++ )
{
if (i >= len-1 )
{
char *pw2 = pw;
len += 100;
pw = m_alloc_secure( len );
if( pw2 )
memcpy(pw, pw2, i );
else
i=0;
}
if (read( fd, pw+i, 1) != 1 || pw[i] == '\n' )
break;
}
pw[i] = 0;
if (!opt.batch)
tty_printf("\b\b\b \n" );
m_free( fd_passwd );
fd_passwd = pw;
}
static int
@ -590,15 +604,20 @@ agent_close ( int fd )
* Mode 0: Allow cached passphrase
* 1: No cached passphrase FIXME: Not really implemented
* 2: Ditto, but change the text to "repeat entry"
*
* Note that TRYAGAIN_TEXT must not be translated. If canceled is not
* NULL, the function does set it to 1 if the user canceled the
* operation.
*/
static char *
agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text,
int *canceled)
{
#if defined(__riscos__)
return NULL;
#else
size_t n;
char *atext;
char *atext = NULL;
char buf[50];
int fd = -1;
int nread;
@ -606,7 +625,12 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
char *pw = NULL;
PKT_public_key *pk = m_alloc_clear( sizeof *pk );
byte fpr[MAX_FINGERPRINT_LEN];
int have_fpr = 0;
int prot;
char *orig_codeset = NULL;
if (canceled)
*canceled = 0;
#if MAX_FINGERPRINT_LEN < 20
#error agent needs a 20 byte fingerprint
@ -619,6 +643,24 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
pk = NULL; /* oops: no key for some reason */
}
#ifdef ENABLE_NLS
/* The Assuan agent protol requires us to trasnmit utf-8 strings */
orig_codeset = bind_textdomain_codeset (PACKAGE, NULL);
#ifdef HAVE_LANGINFO_CODESET
if (!orig_codeset)
orig_codeset = nl_langinfo (CODESET);
#endif
if (orig_codeset)
{ /* We only switch when we are able to restore the codeset later. */
orig_codeset = m_strdup (orig_codeset);
if (!bind_textdomain_codeset (PACKAGE, "utf-8"))
orig_codeset = NULL;
}
#endif
if ( (fd = agent_open (&prot)) == -1 )
goto failure;
if ( !mode && pk && keyid )
{
char *uid;
@ -658,6 +700,7 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
{
size_t dummy;
fingerprint_from_pk( pk, fpr, &dummy );
have_fpr = 1;
}
}
@ -666,9 +709,6 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
else
atext = m_strdup ( _("Enter passphrase\n") );
if ( (fd = agent_open (&prot)) == -1 )
goto failure;
if (!prot)
{ /* old style protocol */
n = 4 + 20 + strlen (atext);
@ -724,10 +764,19 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
pw[pwlen] = 0; /* make a C String */
agent_close (fd);
free_public_key( pk );
#ifdef ENABLE_NLS
if (orig_codeset)
bind_textdomain_codeset (PACKAGE, orig_codeset);
#endif
m_free (orig_codeset);
return pw;
}
else if ( reply == GPGA_PROT_CANCELED )
log_info ( _("cancelled by user\n") );
{
log_info ( _("cancelled by user\n") );
if (canceled)
*canceled = 1;
}
else
log_error ( _("problem with the agent: agent returns 0x%lx\n"),
(ulong)reply );
@ -740,6 +789,8 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
if (!tryagain_text)
tryagain_text = "X";
else
tryagain_text = _(tryagain_text);
/* We allocate 2 time the needed space for atext so that there
is nenough space for escaping */
@ -747,7 +798,7 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
+ 3*strlen (tryagain_text) + 3*strlen (atext) + 2);
strcpy (line, "GET_PASSPHRASE ");
p = line+15;
if (!mode)
if (!mode && have_fpr)
{
for (i=0; i < 20; i++, p +=2 )
sprintf (p, "%02X", fpr[i]);
@ -805,11 +856,20 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
pw[pwlen] = 0; /* make a C String */
agent_close (fd);
free_public_key( pk );
#ifdef ENABLE_NLS
if (orig_codeset)
bind_textdomain_codeset (PACKAGE, orig_codeset);
#endif
m_free (orig_codeset);
return pw;
}
else if (nread > 7 && !memcmp (pw, "ERR 111", 7)
&& (pw[7] == ' ' || pw[7] == '\n') )
log_info (_("cancelled by user\n") );
{
log_info (_("cancelled by user\n") );
if (canceled)
*canceled = 1;
}
else
{
log_error (_("problem with the agent - disabling agent use\n"));
@ -819,6 +879,10 @@ agent_get_passphrase ( u32 *keyid, int mode, const char *tryagain_text )
failure:
#ifdef ENABLE_NLS
if (orig_codeset)
bind_textdomain_codeset (PACKAGE, orig_codeset);
#endif
m_free (atext);
if ( fd != -1 )
agent_close (fd);
@ -945,17 +1009,25 @@ passphrase_clear_cache ( u32 *keyid, int algo )
* (only for mode 2)
* a dek->keylen of 0 means: no passphrase entered.
* (only for mode 2)
* pubkey_algo is only informational.
*
* pubkey_algo is only informational. Note that TRYAGAIN_TEXT must
* not be translated as this is done within this function (required to
* switch to utf-8 when the agent is in use). If CANCELED is not
* NULL, it is set to 1 if the user choosed to cancel the operation,
* otherwise it will be set to 0.
*/
DEK *
passphrase_to_dek( u32 *keyid, int pubkey_algo,
int cipher_algo, STRING2KEY *s2k, int mode,
const char *tryagain_text)
const char *tryagain_text, int *canceled)
{
char *pw = NULL;
DEK *dek;
STRING2KEY help_s2k;
if (canceled)
*canceled = 0;
if( !s2k ) {
/* This is used for the old rfc1991 mode
* Note: This must match the code in encode.c with opt.rfc1991 set */
@ -1030,7 +1102,8 @@ passphrase_to_dek( u32 *keyid, int pubkey_algo,
next_pw = NULL;
}
else if ( opt.use_agent ) {
pw = agent_get_passphrase ( keyid, mode == 2? 1: 0, tryagain_text );
pw = agent_get_passphrase ( keyid, mode == 2? 1: 0,
tryagain_text, canceled );
if (!pw)
{
if (!opt.use_agent)
@ -1038,7 +1111,7 @@ passphrase_to_dek( u32 *keyid, int pubkey_algo,
pw = m_strdup ("");
}
if( *pw && mode == 2 ) {
char *pw2 = agent_get_passphrase ( keyid, 2, NULL );
char *pw2 = agent_get_passphrase ( keyid, 2, NULL, canceled );
if (!pw2)
{
if (!opt.use_agent)

18
g10/seckey-cert.c
View File

@ -36,7 +36,8 @@
static int
do_check( PKT_secret_key *sk, const char *tryagain_text, int mode )
do_check( PKT_secret_key *sk, const char *tryagain_text, int mode,
int *canceled )
{
byte *buffer;
u16 csum=0;
@ -69,7 +70,11 @@ do_check( PKT_secret_key *sk, const char *tryagain_text, int mode )
keyid[3] = sk->main_keyid[1];
}
dek = passphrase_to_dek( keyid, sk->pubkey_algo, sk->protect.algo,
&sk->protect.s2k, mode, tryagain_text );
&sk->protect.s2k, mode,
tryagain_text, canceled );
if (!dek && canceled && *canceled)
return G10ERR_GENERAL;
cipher_hd = cipher_open( sk->protect.algo,
CIPHER_MODE_AUTO_CFB, 1);
cipher_setkey( cipher_hd, dek->key, dek->keylen );
@ -229,12 +234,13 @@ check_secret_key( PKT_secret_key *sk, int n )
n = (opt.batch && !opt.use_agent)? 1 : 3; /* use the default value */
for(i=0; i < n && rc == G10ERR_BAD_PASS; i++ ) {
int canceled = 0;
const char *tryagain = NULL;
if (i) {
tryagain = _("Invalid passphrase; please try again");
log_info (_("%s ...\n"), tryagain);
tryagain = N_("Invalid passphrase; please try again");
log_info (_("%s ...\n"), _(tryagain));
}
rc = do_check( sk, tryagain, mode );
rc = do_check( sk, tryagain, mode, &canceled );
if( rc == G10ERR_BAD_PASS && is_status_enabled() ) {
u32 kid[2];
char buf[50];
@ -243,7 +249,7 @@ check_secret_key( PKT_secret_key *sk, int n )
sprintf(buf, "%08lX%08lX", (ulong)kid[0], (ulong)kid[1]);
write_status_text( STATUS_BAD_PASSPHRASE, buf );
}
if( have_static_passphrase() )
if( have_static_passphrase() || canceled)
break;
}

2
g10/sign.c
View File

@ -1059,7 +1059,7 @@ sign_symencrypt_file (const char *fname, STRLIST locusr)
if (!opt.quiet || !opt.batch)
log_info (_("%s encryption will be used\n"),
cipher_algo_to_string(algo) );
cfx.dek = passphrase_to_dek( NULL, 0, algo, s2k, 2, NULL );
cfx.dek = passphrase_to_dek( NULL, 0, algo, s2k, 2, NULL, NULL);
if (!cfx.dek || !cfx.dek->keylen) {
rc = G10ERR_PASSPHRASE;