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Code Activity

* protect-tool.c: New option --canonical.

Browse Source 
(show_file): Implement it.

* keyformat.txt: Define the created-at attribute for keys.

* ccid-driver.c: Replaced macro DEBUG_T1 by a new debug level.
(parse_ccid_descriptor): Mark SCR335 firmware version 5.18 good.
(ccid_transceive): Arghhh.  The seqno is another bit in the
R-block than in the I block, this was wrong at one place.

* scdaemon.c: New options --debug-ccid-driver and
--debug-disable-ticker.

* app-openpgp.c (do_genkey, do_writekey): Factored code to check
for existing key out into ..
(does_key_exist): .. New function.

* gpg-connect-agent.c (add_definq, show_definq, clear_definq)
(handle_inquire): New.
(read_and_print_response): Handle INQUIRE command.
(main): Implement control commands.
This commit is contained in:
Werner Koch 2005-05-20 20:39:36 +00:00
parent 4237a9cc7f
commit 41862f5f13
17 changed files with 961 additions and 116 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
agent/ChangeLog
View File

@ -1,3 +1,10 @@
2005-05-20 Werner Koch <wk@g10code.com>
* protect-tool.c: New option --canonical.
(show_file): Implement it.
* keyformat.txt: Define the created-at attribute for keys.
2005-05-18 Werner Koch <wk@g10code.com>
* divert-scd.c (ask_for_card): Removed the card reset kludge.

7
agent/call-scd.c
View File

@ -158,7 +158,7 @@ start_scd (ctrl_t ctrl)
gpg_error_t err = 0;
const char *pgmname;
assuan_context_t ctx;
const char *argv[4];
const char *argv[3];
int no_close_list[3];
int i;
int rc;
@ -266,9 +266,8 @@ start_scd (ctrl_t ctrl)
pgmname++;
argv[0] = pgmname;
argv[1] = "--server";
argv[2] = "--multi-server";
argv[3] = NULL;
argv[1] = "--multi-server";
argv[2] = NULL;
i=0;
if (!opt.running_detached)

9
agent/keyformat.txt
View File

@ -30,12 +30,17 @@ Libgcrypt. Here is an example of an unprotected file:
(q #00f7a7c..[some bytes not shown]..61#)
(u #304559a..[some bytes not shown]..9b#)
)
(created-at timestamp)
(uri http://foo.bar x-foo:whatever_you_want)
(comment whatever)
)
"comment" and "uri" are optional. "comment" is currently used to keep
track of ssh key comments.
"comment", "created-at" and "uri" are optional. "comment" is
currently used to keep track of ssh key comments. "created-at" is used
to keep track of the creation time stamp used with OpenPGP keys; it is
optional but required for some operations to calculate the fingerprint
of the key. This timestamp should be a string with the number of
seconds since Epoch or an ISO time string (yyyymmddThhmmss).
Actually this form should not be used for regular purposes and only
accepted by gpg-agent with the configuration option:

23
agent/protect-tool.c
View File

@ -60,6 +60,7 @@ enum cmd_and_opt_values
oShadow,
oShowShadowInfo,
oShowKeygrip,
oCanonical,
oP12Import,
oP12Export,
@ -86,6 +87,7 @@ struct rsa_secret_key_s
static const char *opt_homedir;
static int opt_armor;
static int opt_canonical;
static int opt_store;
static int opt_force;
static int opt_no_fail_on_exist;
@ -107,6 +109,7 @@ static ARGPARSE_OPTS opts[] = {
{ oVerbose, "verbose", 0, "verbose" },
{ oArmor, "armor", 0, "write output in advanced format" },
{ oCanonical, "canonical", 0, "write output in canonical format" },
{ oPassphrase, "passphrase", 2, "|STRING|use passphrase STRING" },
{ oProtect, "protect", 256, "protect a private key"},
{ oUnprotect, "unprotect", 256, "unprotect a private key"},
@ -508,14 +511,21 @@ show_file (const char *fname)
keylen = gcry_sexp_canon_len (key, 0, NULL,NULL);
assert (keylen);
p = make_advanced (key, keylen);
xfree (key);
if (p)
if (opt_canonical)
{
fwrite (p, strlen (p), 1, stdout);
xfree (p);
fwrite (key, keylen, 1, stdout);
}
else
{
p = make_advanced (key, keylen);
if (p)
{
fwrite (p, strlen (p), 1, stdout);
xfree (p);
}
}
xfree (key);
}
static void
@ -1079,6 +1089,7 @@ main (int argc, char **argv )
{
case oVerbose: opt.verbose++; break;
case oArmor: opt_armor=1; break;
case oCanonical: opt_canonical=1; break;
case oHomedir: opt_homedir = pargs.r.ret_str; break;
case oProtect: cmd = oProtect; break;

2
agent/protect.c
View File

@ -60,7 +60,7 @@ hash_passphrase (const char *passphrase, int hashalgo,
/* Calculate the MIC for a private key S-Exp. SHA1HASH should pint to
/* Calculate the MIC for a private key S-Exp. SHA1HASH should point to
a 20 byte buffer. This function is suitable for any algorithms. */
static int
calculate_mic (const unsigned char *plainkey, unsigned char *sha1hash)

50
doc/scdaemon.texi
View File

@ -54,6 +54,12 @@ abbreviate this command.
Run in server mode and wait for commands on the @code{stdin}. This is
default mode is to create a socket and listen for commands there.
@item --multi-server
@opindex multi-server
Run in server mode and wait for commands on the @code{stdin} as well as
on an additional Unix Domain socket. The server command @code{GETINFO}
may be used to get the name of that extra socket.
@item --daemon
@opindex daemon
Run the program in the background. This option is required to prevent
@ -120,6 +126,13 @@ How these messages are mapped to the actual debugging flags is not
specified and may change with newer releaes of this program. They are
however carefully selected to best aid in debugging.
@quotation Note
All debugging options are subject to change and thus should not be used
by any application program. As the name says, they are only used as
helpers to debug problems.
@end quotation
@item --debug @var{flags}
@opindex debug
This option is only useful for debugging and the behaviour may change at
@ -128,7 +141,7 @@ usual C-Syntax. The currently defined bits are:
@table @code
@item 0 (1)
X.509 or OpenPGP protocol related data
command I/O
@item 1 (2)
values of big number integers
@item 2 (4)
@ -143,8 +156,8 @@ usual C-Syntax. The currently defined bits are:
write hashed data to files named @code{dbgmd-000*}
@item 10 (1024)
trace Assuan protocol
@item 12 (4096)
bypass all certificate validation
@item 11 (2048)
trace APDU I/O to the card. This may reveal sensitive data.
@end table
@item --debug-all
@ -157,6 +170,17 @@ When running in server mode, wait @var{n} seconds before entering the
actual processing loop and print the pid. This gives time to attach a
debugger.
@item --debug-ccid-driver
@opindex debug-wait
Enable debug output from the included CCID driver for smartcards.
Using this option twice will also enable some tracing of the T=1
protocol. Note that this option may reveal sensitive data.
@item --debug-disable-ticker
@opindex debug-disable-ticker
This option disables all ticker functions like checking for card
insertions.
@item --no-detach
@opindex no-detach
Don't detach the process from the console. This is manly usefule for
@ -286,6 +310,7 @@ syncronizing access to a token between sessions.
* Scdaemon PKDECRYPT:: Decrypting data with a Smartcard.
* Scdaemon GETATTR:: Read an attribute's value.
* Scdaemon SETATTR:: Update an attribute's value.
* Scdaemon WRITEKEY:: Write a key to a card.
* Scdaemon GENKEY:: Generate a new key on-card.
* Scdaemon RANDOM:: Return random bytes generate on-card.
* Scdaemon PASSWD:: Change PINs.
@ -420,6 +445,25 @@ TO BE WRITTEN.
TO BE WRITTEN.
@node Scdaemon WRITEKEY
@subsection Write a key to a card.
@example
WRITEKEY [--force] @var{keyid}
@end example
This command is used to store a secret key on a a smartcard. The
allowed keyids depend on the currently selected smartcard
application. The actual keydata is requested using the inquiry
@code{KEYDATA} and need to be provided without any protection. With
@option{--force} set an existing key under this @var{keyid} will get
overwritten. The key data is expected to be the usual canonical encoded
S-expression.
A PIN will be requested in most saes. This however depends on the
actual card application.
@node Scdaemon GENKEY
@subsection Generate a new key on-card.

27
scd/ChangeLog
View File

@ -1,3 +1,30 @@
2005-05-20 Werner Koch <wk@g10code.com>
* ccid-driver.c: Replaced macro DEBUG_T1 by a new debug level.
(parse_ccid_descriptor): Mark SCR335 firmware version 5.18 good.
(ccid_transceive): Arghhh. The seqno is another bit in the
R-block than in the I block, this was wrong at one place.
* scdaemon.c: New options --debug-ccid-driver and
--debug-disable-ticker.
* app-openpgp.c (do_genkey, do_writekey): Factored code to check
for existing key out into ..
(does_key_exist): .. New function.
2005-05-19 Werner Koch <wk@g10code.com>
* tlv.c (parse_sexp): New.
* command.c (cmd_writekey): New.
* app.c (app_writekey): New.
* app-common.c (app_t): Add function ptr WRITEKEY.
* app-openpgp.c (do_writekey): New.
* app-openpgp.c (do_readkey) [GNUPG_MAJOR_VERSION==1]: Return error.
* app-common.h (app_t) [GNUPG_MAJOR_VERSION==1]: Add a field to
store the Assuan context.
2005-05-17 Werner Koch <wk@g10code.com>
* scdaemon.c: Removed non-pth code paths.

28
scd/app-common.h
View File

@ -23,10 +23,15 @@
#ifndef GNUPG_SCD_APP_COMMON_H
#define GNUPG_SCD_APP_COMMON_H
#if GNUPG_MAJOR_VERSION != 1
#include <ksba.h>
#if GNUPG_MAJOR_VERSION == 1
# ifdef ENABLE_AGENT_SUPPORT
# include "assuan.h"
# endif
#else
# include <ksba.h>
#endif
struct app_local_s; /* Defined by all app-*.c. */
struct app_ctx_s {
@ -35,6 +40,15 @@ struct app_ctx_s {
unsupported operations the particular
function pointer is set to NULL */
int slot; /* Used reader. */
/* If this is used by GnuPG 1.4 we need to know the assuan context
in case we need to divert the operation to an already running
agent. This if ASSUAN_CTX is not NULL we take this as indication
that all operations are diverted to gpg-agent. */
#if GNUPG_MAJOR_VERSION == 1 && defined(ENABLE_AGENT_SUPPORT)
assuan_context_t assuan_ctx;
#endif /*GNUPG_MAJOR_VERSION == 1*/
unsigned char *serialno; /* Serialnumber in raw form, allocated. */
size_t serialnolen; /* Length in octets of serialnumber. */
const char *apptype;
@ -72,6 +86,11 @@ struct app_ctx_s {
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen);
gpg_error_t (*writekey) (app_t app, ctrl_t ctrl,
const char *certid, unsigned int flags,
gpg_error_t (*pincb)(void*,const char *,char **),
void *pincb_arg,
const unsigned char *pk, size_t pklen);
gpg_error_t (*genkey) (app_t app, ctrl_t ctrl,
const char *keynostr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
@ -134,6 +153,11 @@ gpg_error_t app_decipher (app_t app, const char *keyidstr,
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen );
gpg_error_t app_writekey (app_t app, ctrl_t ctrl,
const char *keyidstr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *keydata, size_t keydatalen);
gpg_error_t app_genkey (app_t app, ctrl_t ctrl,
const char *keynostr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),

355
scd/app-openpgp.c
View File

@ -565,7 +565,7 @@ store_fpr (int slot, int keynumber, u32 timestamp,
n = 6 + 2 + mlen + 2 + elen;
p = buffer = xtrymalloc (3 + n);
if (!buffer)
return gpg_error (gpg_err_code_from_errno (errno));
return gpg_error_from_errno (errno);
*p++ = 0x99; /* ctb */
*p++ = n >> 8; /* 2 byte length header */
@ -1207,6 +1207,7 @@ do_learn_status (app_t app, ctrl_t ctrl)
static gpg_error_t
do_readkey (app_t app, const char *keyid, unsigned char **pk, size_t *pklen)
{
#if GNUPG_MAJOR_VERSION > 1
gpg_error_t err;
int keyno;
unsigned char *buf;
@ -1230,6 +1231,9 @@ do_readkey (app_t app, const char *keyid, unsigned char **pk, size_t *pklen)
*pk = buf;
*pklen = app->app_local->pk[keyno-1].keylen;;
return 0;
#else
return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
#endif
}
@ -1523,6 +1527,318 @@ 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
error returned if the key already exists. */
static gpg_error_t
does_key_exist (app_t app, int keyidx, int force)
{
const unsigned char *fpr;
unsigned char *buffer;
size_t buflen, n;
int i;
assert (keyidx >=0 && keyidx <= 2);
if (iso7816_get_data (app->slot, 0x006E, &buffer, &buflen))
{
log_error (_("error reading application data\n"));
return gpg_error (GPG_ERR_GENERAL);
}
fpr = find_tlv (buffer, buflen, 0x00C5, &n);
if (!fpr || n < 60)
{
log_error (_("error reading fingerprint DO\n"));
xfree (buffer);
return gpg_error (GPG_ERR_GENERAL);
}
fpr += 20*keyidx;
for (i=0; i < 20 && !fpr[i]; i++)
;
xfree (buffer);
if (i!=20 && !force)
{
log_error (_("key already exists\n"));
return gpg_error (GPG_ERR_EEXIST);
}
else if (i!=20)
log_info (_("existing key will be replaced\n"));
else
log_info (_("generating new key\n"));
return 0;
}
/* Handle the WRITEKEY command for OpenPGP. This function expects a
canonical encoded S-expression with the secret key in KEYDATA and
its length (for assertions) in KEYDATALEN. KEYID needs to be the
usual keyid which for OpenPGP is the string "OPENPGP.n" with
n=1,2,3. Bit 0 of FLAGS indicates whether an existing key shall
get overwritten. PINCB and PINCB_ARG are the usual arguments for
the pinentry callback. */
static gpg_error_t
do_writekey (app_t app, ctrl_t ctrl,
const char *keyid, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *keydata, size_t keydatalen)
{
gpg_error_t err;
int force = (flags & 1);
int keyno;
const unsigned char *buf, *tok;
size_t buflen, toklen;
int depth, last_depth1, last_depth2;
const unsigned char *rsa_n = NULL;
const unsigned char *rsa_e = NULL;
const unsigned char *rsa_p = NULL;
const unsigned char *rsa_q = NULL;
size_t rsa_n_len, rsa_e_len, rsa_p_len, rsa_q_len;
unsigned int nbits;
unsigned char *template = NULL;
unsigned char *tp;
size_t template_len;
unsigned char fprbuf[20];
u32 created_at = 0;
if (!strcmp (keyid, "OPENPGP.1"))
keyno = 0;
else if (!strcmp (keyid, "OPENPGP.2"))
keyno = 1;
else if (!strcmp (keyid, "OPENPGP.3"))
keyno = 2;
else
return gpg_error (GPG_ERR_INV_ID);
err = does_key_exist (app, keyno, force);
if (err)
return err;
/*
Parse the S-expression
*/
buf = keydata;
buflen = keydatalen;
depth = 0;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if (!tok || toklen != 11 || memcmp ("private-key", tok, toklen))
{
if (!tok)
;
else if (toklen == 21 && !memcmp ("protected-private-key", tok, toklen))
log_info ("protected-private-key passed to writekey\n");
else if (toklen == 20 && !memcmp ("shadowed-private-key", tok, toklen))
log_info ("shadowed-private-key passed to writekey\n");
err = gpg_error (GPG_ERR_BAD_KEY);
goto leave;
}
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if (!tok || toklen != 3 || memcmp ("rsa", tok, toklen))
{
err = gpg_error (GPG_ERR_WRONG_PUBKEY_ALGO);
goto leave;
}
last_depth1 = depth;
while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
&& depth && depth >= last_depth1)
{
if (tok)
{
err = gpg_error (GPG_ERR_UNKNOWN_SEXP);
goto leave;
}
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if (tok && toklen == 1)
{
const unsigned char **mpi;
size_t *mpi_len;
switch (*tok)
{
case 'n': mpi = &rsa_n; mpi_len = &rsa_n_len; break;
case 'e': mpi = &rsa_e; mpi_len = &rsa_e_len; break;
case 'p': mpi = &rsa_p; mpi_len = &rsa_p_len; break;
case 'q': mpi = &rsa_q; mpi_len = &rsa_q_len;break;
default: mpi = NULL; mpi_len = NULL; break;
}
if (mpi && *mpi)
{
err = gpg_error (GPG_ERR_DUP_VALUE);
goto leave;
}
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if (tok && mpi)
{
/* Strip off leading zero bytes and save. */
for (;toklen && !*tok; toklen--, tok++)
;
*mpi = tok;
*mpi_len = toklen;
}
}
/* Skip until end of list. */
last_depth2 = depth;
while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
&& depth && depth >= last_depth2)
;
if (err)
goto leave;
}
/* Parse other attributes. */
last_depth1 = depth;
while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
&& depth && depth >= last_depth1)
{
if (tok)
{
err = gpg_error (GPG_ERR_UNKNOWN_SEXP);
goto leave;
}
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
goto leave;
if (tok && toklen == 10 && !memcmp ("created-at", tok, toklen))
{
if ((err = parse_sexp (&buf,&buflen,&depth,&tok,&toklen)))
goto leave;
if (tok)
{
for (created_at=0; toklen && *tok && *tok >= '0' && *tok <= '9';
tok++, toklen--)
created_at = created_at*10 + (*tok - '0');
}
}
/* Skip until end of list. */
last_depth2 = depth;
while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
&& depth && depth >= last_depth2)
;
if (err)
goto leave;
}
/* Check that we have all parameters and that they match the card
description. */
if (!created_at)
{
log_error (_("creation timestamp missing\n"));
err = gpg_error (GPG_ERR_INV_VALUE);
goto leave;
}
nbits = rsa_n? count_bits (rsa_n, rsa_n_len) : 0;
if (nbits != 1024)
{
log_error (_("RSA modulus missing or not of size %d bits\n"), 1024);
err = gpg_error (GPG_ERR_BAD_SECKEY);
goto leave;
}
nbits = rsa_e? count_bits (rsa_e, rsa_e_len) : 0;
if (nbits < 2 || nbits > 32)
{
log_error (_("RSA public exponent missing or largerr than %d bits\n"),
32);
err = gpg_error (GPG_ERR_BAD_SECKEY);
goto leave;
}
nbits = rsa_p? count_bits (rsa_p, rsa_p_len) : 0;
if (nbits != 512)
{
log_error (_("RSA prime %s missing or not of size %d bits\n"), "P", 512);
err = gpg_error (GPG_ERR_BAD_SECKEY);
goto leave;
}
nbits = rsa_q? count_bits (rsa_q, rsa_q_len) : 0;
if (nbits != 512)
{
log_error (_("RSA prime %s missing or not of size %d bits\n"), "Q", 512);
err = gpg_error (GPG_ERR_BAD_SECKEY);
goto leave;
}
/* Build the private key template as described in section 4.3.3.6 of
the OpenPGP card specs:
0xC0 <length> public exponent
0xC1 <length> prime p
0xC2 <length> prime q
*/
assert (rsa_e_len <= 4);
template_len = (1 + 1 + 4
+ 1 + 1 + rsa_p_len
+ 1 + 1 + rsa_q_len);
template = tp = xtrymalloc_secure (template_len);
if (!template)
{
err = gpg_error_from_errno (errno);
goto leave;
}
*tp++ = 0xC0;
*tp++ = 4;
memcpy (tp, rsa_e, rsa_e_len);
if (rsa_e_len < 4)
{
/* Right justify E. */
memmove (tp+4-rsa_e_len, tp, 4-rsa_e_len);
memset (tp, 0, 4-rsa_e_len);
}
tp += 4;
*tp++ = 0xC1;
*tp++ = rsa_p_len;
memcpy (tp, rsa_p, rsa_p_len);
tp += rsa_p_len;
*tp++ = 0xC2;
*tp++ = rsa_q_len;
memcpy (tp, rsa_q, rsa_q_len);
tp += rsa_q_len;
assert (tp - template == template_len);
/* Obviously we need to remove the cached public key. */
xfree (app->app_local->pk[keyno].key);
app->app_local->pk[keyno].key = NULL;
app->app_local->pk[keyno].keylen = 0;
app->app_local->pk[keyno].read_done = 0;
/* Prepare for storing the key. */
err = verify_chv3 (app, pincb, pincb_arg);
if (err)
goto leave;
/* Store the key. */
err = iso7816_put_data (app->slot,
(app->card_version > 0x0007? 0xE0 : 0xE9) + keyno,
template, template_len);
if (err)
{
log_error (_("failed to store the key: %s\n"), gpg_strerror (err));
goto leave;
}
err = store_fpr (app->slot, keyno, created_at,
rsa_n, rsa_n_len, rsa_e, rsa_e_len,
fprbuf, app->card_version);
if (err)
goto leave;
leave:
xfree (template);
return err;
}
/* Handle the GENKEY command. */
static gpg_error_t
@ -1531,13 +1847,11 @@ do_genkey (app_t app, ctrl_t ctrl, const char *keynostr, unsigned int flags,
void *pincb_arg)
{
int rc;
int i;
char numbuf[30];
unsigned char fprbuf[20];
const unsigned char *fpr;
const unsigned char *keydata, *m, *e;
unsigned char *buffer;
size_t buflen, keydatalen, n, mlen, elen;
unsigned char *buffer = NULL;
size_t buflen, keydatalen, mlen, elen;
time_t created_at;
int keyno = atoi (keynostr);
int force = (flags & 1);
@ -1558,41 +1872,15 @@ do_genkey (app_t app, ctrl_t ctrl, const char *keynostr, unsigned int flags,
app->app_local->pk[keyno].read_done = 0;
/* Check whether a key already exists. */
rc = iso7816_get_data (app->slot, 0x006E, &buffer, &buflen);
rc = does_key_exist (app, keyno, force);
if (rc)
{
log_error (_("error reading application data\n"));
return gpg_error (GPG_ERR_GENERAL);
}
fpr = find_tlv (buffer, buflen, 0x00C5, &n);
if (!fpr || n != 60)
{
rc = gpg_error (GPG_ERR_GENERAL);
log_error (_("error reading fingerprint DO\n"));
goto leave;
}
fpr += 20*keyno;
for (i=0; i < 20 && !fpr[i]; i++)
;
if (i!=20 && !force)
{
rc = gpg_error (GPG_ERR_EEXIST);
log_error (_("key already exists\n"));
goto leave;
}
else if (i!=20)
log_info (_("existing key will be replaced\n"));
else
log_info (_("generating new key\n"));
return rc;
/* Prepare for key generation by verifying the ADmin PIN. */
rc = verify_chv3 (app, pincb, pincb_arg);
if (rc)
goto leave;
xfree (buffer); buffer = NULL;
#if 1
log_info (_("please wait while key is being generated ...\n"));
start_at = time (NULL);
@ -2216,6 +2504,7 @@ app_select_openpgp (app_t app)
app->fnc.readkey = do_readkey;
app->fnc.getattr = do_getattr;
app->fnc.setattr = do_setattr;
app->fnc.writekey = do_writekey;
app->fnc.genkey = do_genkey;
app->fnc.sign = do_sign;
app->fnc.auth = do_auth;

29
scd/app.c
View File

@ -546,6 +546,35 @@ app_decipher (app_t app, const char *keyidstr,
}
/* Perform the WRITEKEY operation. */
gpg_error_t
app_writekey (app_t app, ctrl_t ctrl,
const char *keyidstr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *keydata, size_t keydatalen)
{
gpg_error_t err;
if (!app || !keyidstr || !*keyidstr || !pincb)
return gpg_error (GPG_ERR_INV_VALUE);
if (!app->initialized)
return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
if (!app->fnc.writekey)
return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
err = lock_reader (app);
if (err)
return err;
err = app->fnc.writekey (app, ctrl, keyidstr, flags,
pincb, pincb_arg, keydata, keydatalen);
unlock_reader (app);
if (opt.verbose)
log_info ("operation writekey result: %s\n", gpg_strerror (err));
return err;
}
/* Perform a SETATTR operation. */
gpg_error_t
app_genkey (app_t app, CTRL ctrl, const char *keynostr, unsigned int flags,

104
scd/ccid-driver.c
View File

@ -108,9 +108,6 @@
# include "scdaemon.h"
#endif
/* Define to print information pertaining the T=1 protocol. */
#undef DEBUG_T1
# define DEBUGOUT(t) do { if (debug_level) \
log_debug (DRVNAME t); } while (0)
@ -120,6 +117,8 @@
log_debug (DRVNAME t,(a),(b)); } while (0)
# define DEBUGOUT_3(t,a,b,c) do { if (debug_level) \
log_debug (DRVNAME t,(a),(b),(c));} while (0)
# define DEBUGOUT_4(t,a,b,c,d) do { if (debug_level) \
log_debug (DRVNAME t,(a),(b),(c),(d));} while (0)
# define DEBUGOUT_CONT(t) do { if (debug_level) \
log_printf (t); } while (0)
# define DEBUGOUT_CONT_1(t,a) do { if (debug_level) \
@ -141,6 +140,8 @@
fprintf (stderr, DRVNAME t, (a), (b)); } while (0)
# define DEBUGOUT_3(t,a,b,c) do { if (debug_level) \
fprintf (stderr, DRVNAME t, (a), (b), (c)); } while (0)
# define DEBUGOUT_4(t,a,b,c,d) do { if (debug_level) \
fprintf (stderr, DRVNAME t, (a), (b), (c), (d));} while(0)
# define DEBUGOUT_CONT(t) do { if (debug_level) \
fprintf (stderr, t); } while (0)
# define DEBUGOUT_CONT_1(t,a) do { if (debug_level) \
@ -216,7 +217,11 @@ struct ccid_driver_s
static int initialized_usb; /* Tracks whether USB has been initialized. */
static int debug_level; /* Flag to control the debug output. */
static int debug_level; /* Flag to control the debug output.
0 = No debugging
1 = USB I/O info
2 = T=1 protocol tracing
*/
static unsigned int compute_edc (const unsigned char *data, size_t datalen,
@ -457,7 +462,7 @@ parse_ccid_descriptor (ccid_driver_t handle,
&& handle->max_ifsd > 48
&& ( (handle->id_product == 0xe001 && handle->bcd_device < 0x0516)
||(handle->id_product == 0x5111 && handle->bcd_device < 0x0620)
||(handle->id_product == 0x5115 && handle->bcd_device < 0x0519)
||(handle->id_product == 0x5115 && handle->bcd_device < 0x0518)
||(handle->id_product == 0xe003 && handle->bcd_device < 0x0504)
))
{
@ -827,7 +832,8 @@ scan_or_find_devices (int readerno, const char *readerid,
/* Set the level of debugging to to usea dn return the old level. -1
just returns the old level. A level of 0 disables debugging, 1
enables debugging, other values are not yet defined. */
enables debugging, 2 enables additional tracing of the T=1
protocol, other values are not yet defined. */
int
ccid_set_debug_level (int level)
{
@ -1437,12 +1443,13 @@ ccid_get_atr (ccid_driver_t handle,
DEBUGOUT_CONT_1 (" %02X", msg[i]);
DEBUGOUT_LF ();
#ifdef DEBUG_T1
fprintf (stderr, "T1: put %c-block seq=%d\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)));
#endif
if (debug_level > 1)
DEBUGOUT_3 ("T=1: put %c-block seq=%d%s\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10)
: !!(msg[11] & 0x40)),
(!(msg[11] & 0x80) && (msg[11] & 0x20)? " [more]":""));
rc = bulk_out (handle, msg, msglen);
if (rc)
@ -1460,14 +1467,15 @@ ccid_get_atr (ccid_driver_t handle,
if (tpdulen < 4)
return CCID_DRIVER_ERR_ABORTED;
#ifdef DEBUG_T1
fprintf (stderr, "T1: got %c-block seq=%d err=%d\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0
);
#endif
if (debug_level > 1)
DEBUGOUT_4 ("T=1: got %c-block seq=%d err=%d%s\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10)
: !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0,
(!(msg[11] & 0x80) && (msg[11] & 0x20)? " [more]":""));
if ((tpdu[1] & 0xe0) != 0xe0 || tpdu[2] != 1)
{
DEBUGOUT ("invalid response for S-block (Change-IFSD)\n");
@ -1706,12 +1714,13 @@ ccid_transceive (ccid_driver_t handle,
DEBUGOUT_CONT_1 (" %02X", msg[i]);
DEBUGOUT_LF ();
#ifdef DEBUG_T1
fprintf (stderr, "T1: put %c-block seq=%d\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)));
#endif
if (debug_level > 1)
DEBUGOUT_3 ("T=1: put %c-block seq=%d%s\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10)
: !!(msg[11] & 0x40)),
(!(msg[11] & 0x80) && (msg[11] & 0x20)? " [more]":""));
rc = bulk_out (handle, msg, msglen);
if (rc)
@ -1731,14 +1740,14 @@ ccid_transceive (ccid_driver_t handle,
usb_clear_halt (handle->idev, handle->ep_bulk_in);
return CCID_DRIVER_ERR_ABORTED;
}
#ifdef DEBUG_T1
fprintf (stderr, "T1: got %c-block seq=%d err=%d\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0
);
#endif
if (debug_level > 1)
DEBUGOUT_4 ("T=1: got %c-block seq=%d err=%d%s\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0,
(!(msg[11] & 0x80) && (msg[11] & 0x20)? " [more]":""));
if (!(tpdu[1] & 0x80))
{ /* This is an I-block. */
@ -1814,8 +1823,8 @@ ccid_transceive (ccid_driver_t handle,
msg = send_buffer;
tpdulen = last_tpdulen;
}
else if (sending && !!(tpdu[1] & 0x40) == handle->t1_ns)
{ /* Reponse does not match our sequence number. */
else if (sending && !!(tpdu[1] & 0x10) == handle->t1_ns)
{ /* Response does not match our sequence number. */
DEBUGOUT ("R-block with wrong seqno received on more bit\n");
return CCID_DRIVER_ERR_CARD_IO_ERROR;
}
@ -1835,7 +1844,7 @@ ccid_transceive (ccid_driver_t handle,
else
{ /* This is a S-block. */
retries = 0;
DEBUGOUT_2 ("T1 S-block %s received cmd=%d\n",
DEBUGOUT_2 ("T=1 S-block %s received cmd=%d\n",
(tpdu[1] & 0x20)? "response": "request",
(tpdu[1] & 0x1f));
if ( !(tpdu[1] & 0x20) && (tpdu[1] & 0x1f) == 3 && tpdu[2])
@ -1853,7 +1862,7 @@ ccid_transceive (ccid_driver_t handle,
if (use_crc)
tpdu[tpdulen++] = (edc >> 8);
tpdu[tpdulen++] = edc;
DEBUGOUT_1 ("T1 waittime extension of bwi=%d\n", bwi);
DEBUGOUT_1 ("T=1 waittime extension of bwi=%d\n", bwi);
}
else
return CCID_DRIVER_ERR_CARD_IO_ERROR;
@ -2008,14 +2017,13 @@ ccid_transceive_secure (ccid_driver_t handle,
usb_clear_halt (handle->idev, handle->ep_bulk_in);
return CCID_DRIVER_ERR_ABORTED;
}
#ifdef DEBUG_T1
fprintf (stderr, "T1: got %c-block seq=%d err=%d\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0
);
#endif
if (debug_level > 1)
DEBUGOUT_4 ("T=1: got %c-block seq=%d err=%d%s\n",
((msg[11] & 0xc0) == 0x80)? 'R' :
(msg[11] & 0x80)? 'S' : 'I',
((msg[11] & 0x80)? !!(msg[11]& 0x10) : !!(msg[11] & 0x40)),
((msg[11] & 0xc0) == 0x80)? (msg[11] & 0x0f) : 0,
(!(msg[11] & 0x80) && (msg[11] & 0x20)? " [more]":""));
if (!(tpdu[1] & 0x80))
{ /* This is an I-block. */
@ -2062,7 +2070,7 @@ ccid_transceive_secure (ccid_driver_t handle,
DEBUGOUT ("No retries supported for Secure operation\n");
return CCID_DRIVER_ERR_CARD_IO_ERROR;
}
else if (!!(tpdu[1] & 0x40) == handle->t1_ns)
else if (!!(tpdu[1] & 0x10) == handle->t1_ns)
{ /* Reponse does not match our sequence number. */
DEBUGOUT ("R-block with wrong seqno received on more bit\n");
return CCID_DRIVER_ERR_CARD_IO_ERROR;
@ -2075,7 +2083,7 @@ ccid_transceive_secure (ccid_driver_t handle,
}
else
{ /* This is a S-block. */
DEBUGOUT_2 ("T1 S-block %s received cmd=%d for Secure operation\n",
DEBUGOUT_2 ("T=1 S-block %s received cmd=%d for Secure operation\n",
(tpdu[1] & 0x20)? "response": "request",
(tpdu[1] & 0x1f));
return CCID_DRIVER_ERR_CARD_IO_ERROR;

81
scd/command.c
View File

@ -40,6 +40,9 @@
/* Maximum length allowed as a PIN; used for INQUIRE NEEDPIN */
#define MAXLEN_PIN 100
/* Maximum allowed size of key data as used in inquiries. */
#define MAXLEN_KEYDATA 4096
#define set_error(e,t) assuan_set_error (ctx, ASSUAN_ ## e, (t))
@ -523,7 +526,7 @@ cmd_readcert (assuan_context_t ctx, char *line)
}
/* READKEY <hexified_certid>
/* READKEY <keyid>
Return the public key for the given cert or key ID as an standard
S-Expression.
@ -913,6 +916,79 @@ cmd_setattr (assuan_context_t ctx, char *orig_line)
return map_to_assuan_status (rc);
}
/* WRITEKEY [--force] <keyid>
This command is used to store a secret key on a a smartcard. The
allowed keyids depend on the currently selected smartcard
application. The actual keydata is requested using the inquiry
"KETDATA" and need to be provided without any protection. With
--force set an existing key under this KEYID will get overwritten.
The keydata is expected to be the usual canonical encoded
S-expression.
A PIN will be requested for most NAMEs. See the corresponding
writekey function of the actually used application (app-*.c) for
details. */
static int
cmd_writekey (assuan_context_t ctx, char *line)
{
ctrl_t ctrl = assuan_get_pointer (ctx);
int rc;
char *keyid;
int force = has_option (line, "--force");
unsigned char *keydata;
size_t keydatalen;
if ( IS_LOCKED (ctrl) )
return gpg_error (GPG_ERR_LOCKED);
/* Skip over options. */
while ( *line == '-' && line[1] == '-' )
{
while (*line && !spacep (line))
line++;
while (spacep (line))
line++;
}
if (!*line)
return set_error (Parameter_Error, "no keyid given");
keyid = line;
while (*line && !spacep (line))
line++;
*line = 0;
if ((rc = open_card (ctrl, NULL)))
return rc;
if (!ctrl->app_ctx)
return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
keyid = xtrystrdup (keyid);
if (!keyid)
return ASSUAN_Out_Of_Core;
/* Now get the actual keydata. */
rc = assuan_inquire (ctx, "KEYDATA", &keydata, &keydatalen, MAXLEN_KEYDATA);
if (rc)
{
xfree (keyid);
return rc;
}
/* Write the key to the card. */
rc = app_writekey (ctrl->app_ctx, ctrl, keyid, force? 1:0,
pin_cb, ctx, keydata, keydatalen);
xfree (keyid);
xfree (keydata);
TEST_CARD_REMOVAL (ctrl, rc);
return map_to_assuan_status (rc);
}
/* GENKEY [--force] <no>
Generate a key on-card identified by NO, which is application
@ -924,7 +1000,7 @@ cmd_setattr (assuan_context_t ctx, char *orig_line)
S KEY-DATA [p|n] <hexdata>
--force is required to overwriet an already existing key. The
--force is required to overwrite an already existing key. The
KEY-CREATED-AT is required for further processing because it is
part of the hashed key material for the fingerprint.
@ -1222,6 +1298,7 @@ register_commands (assuan_context_t ctx)
{ "OUTPUT", NULL },
{ "GETATTR", cmd_getattr },
{ "SETATTR", cmd_setattr },
{ "WRITEKEY", cmd_writekey },
{ "GENKEY", cmd_genkey },
{ "RANDOM", cmd_random },
{ "PASSWD", cmd_passwd },

33
scd/scdaemon.c
View File

@ -50,6 +50,7 @@
#ifdef HAVE_W32_SYSTEM
#include "../jnlib/w32-afunix.h"
#endif
#include "ccid-driver.h"
enum cmd_and_opt_values
@ -66,7 +67,7 @@ enum cmd_and_opt_values
oDebugAll,
oDebugLevel,
oDebugWait,
oDebugSC,
oDebugCCIDDriver,
oNoGreeting,
oNoOptions,
oHomedir,
@ -85,8 +86,8 @@ enum cmd_and_opt_values
oAllowAdmin,
oDenyAdmin,
oDisableApplication,
aTest };
oDebugDisableTicker
};
@ -97,6 +98,8 @@ static ARGPARSE_OPTS opts[] = {
{ 301, NULL, 0, N_("@Options:\n ") },
{ oServer, "server", 0, N_("run in server mode (foreground)") },
{ oMultiServer, "multi-server", 0,
N_("run in multi server mode (foreground)") },
{ oDaemon, "daemon", 0, N_("run in daemon mode (background)") },
{ oVerbose, "verbose", 0, N_("verbose") },
{ oQuiet, "quiet", 0, N_("be somewhat more quiet") },
@ -107,10 +110,10 @@ static ARGPARSE_OPTS opts[] = {
{ oDebugAll, "debug-all" ,0, "@"},
{ oDebugLevel, "debug-level" ,2, "@"},
{ oDebugWait,"debug-wait",1, "@"},
{ oDebugCCIDDriver, "debug-ccid-driver", 0, "@"},
{ oDebugDisableTicker, "debug-disable-ticker", 0, "@"},
{ oNoDetach, "no-detach" ,0, N_("do not detach from the console")},
{ oLogFile, "log-file" ,2, N_("use a log file for the server")},
{ oMultiServer, "multi-server", 0,
N_("allow additional connections in server mode")},
{ oReaderPort, "reader-port", 2, N_("|N|connect to reader at port N")},
{ octapiDriver, "ctapi-driver", 2, N_("|NAME|use NAME as ct-API driver")},
{ opcscDriver, "pcsc-driver", 2, N_("|NAME|use NAME as PC/SC driver")},
@ -125,10 +128,6 @@ static ARGPARSE_OPTS opts[] = {
{ oDenyAdmin, "deny-admin", 0, "@" },
{ oDisableApplication, "disable-application", 2, "@"},
/* Dummy options to be removed at some point. */
{ oDebugSC, "debug-sc", 1, "@" },
{ oDisableOpenSC, "disable-opensc", 0, "@" },
{0}
};
@ -150,6 +149,12 @@ static int maybe_setuid = 1;
/* Name of the communication socket */
static char *socket_name;
/* Debug flag to disable the ticker. The ticker is in fact not
disabled but it won't perform any ticker specific actions. */
static int ticker_disabled;
static char *create_socket_name (int use_standard_socket,
char *standard_name, char *template);
@ -443,7 +448,10 @@ main (int argc, char **argv )
case oDebugAll: opt.debug = ~0; break;
case oDebugLevel: debug_level = pargs.r.ret_str; break;
case oDebugWait: debug_wait = pargs.r.ret_int; break;
case oDebugSC: break;
case oDebugCCIDDriver:
ccid_set_debug_level (ccid_set_debug_level (-1)+1);
break;
case oDebugDisableTicker: ticker_disabled = 1; break;
case oOptions:
/* config files may not be nested (silently ignore them) */
@ -463,7 +471,7 @@ main (int argc, char **argv )
case oCsh: csh_style = 1; break;
case oSh: csh_style = 0; break;
case oServer: pipe_server = 1; break;
case oMultiServer: multi_server = 1; break;
case oMultiServer: pipe_server = 1; multi_server = 1; break;
case oDaemon: is_daemon = 1; break;
case oReaderPort: opt.reader_port = pargs.r.ret_str; break;
@ -839,7 +847,8 @@ handle_signal (int signo)
static void
handle_tick (void)
{
scd_update_reader_status_file ();
if (!ticker_disabled)
scd_update_reader_status_file ();
}

73
scd/tlv.c
View File

@ -221,3 +221,76 @@ parse_ber_header (unsigned char const **buffer, size_t *size,
*size = length;
return 0;
}
/* FIXME: The following function should not go into this file but for
now it is easier to keep it here. */
/* Return the next token of an canconical encoded S-expression. BUF
is the pointer to the S-expression and BUFLEN is a pointer to the
length of this S-expression (used to validate the syntax). Both
are updated to reflect the new position. The token itself is
returned as a pointer into the orginal buffer at TOK and TOKLEN.
If a parentheses is the next token, TOK will be set to NULL.
TOKLEN is checked to be within the bounds. On error a error code
is returned and all pointers should are not guaranteed to point to
a meanigful value. DEPTH should be initialized to 0 and will
reflect on return the actual depth of the tree. To detect the end
of the S-expression it is advisable to check DEPTH after a
successful return:
depth = 0;
while (!(err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen))
&& depth)
process_token (tok, toklen);
if (err)
handle_error ();
*/
gpg_error_t
parse_sexp (unsigned char const **buf, size_t *buflen,
int *depth, unsigned char const **tok, size_t *toklen)
{
const unsigned char *s;
size_t n, vlen;
s = *buf;
n = *buflen;
*tok = NULL;
*toklen = 0;
if (!n)
return *depth ? gpg_error (GPG_ERR_INV_SEXP) : 0;
if (*s == '(')
{
s++; n--;
(*depth)++;
*buf = s;
*buflen = n;
return 0;
}
if (*s == ')')
{
if (!*depth)
return gpg_error (GPG_ERR_INV_SEXP);
*toklen = 1;
s++; n--;
(*depth)--;
*buf = s;
*buflen = n;
return 0;
}
for (vlen=0; n && *s && *s != ':' && (*s >= '0' && *s <= '9'); s++, n--)
vlen = vlen*10 + (*s - '0');
if (!n || *s != ':')
return gpg_error (GPG_ERR_INV_SEXP);
s++; n--;
if (vlen > n)
return gpg_error (GPG_ERR_INV_SEXP);
*tok = s;
*toklen = vlen;
s += vlen;
n -= vlen;
*buf = s;
*buflen = n;
return 0;
}

17
scd/tlv.h
View File

@ -88,4 +88,21 @@ gpg_error_t parse_ber_header (unsigned char const **buffer, size_t *size,
/* Return the next token of an canconical encoded S-expression. BUF
is the pointer to the S-expression and BUFLEN is a pointer to the
length of this S-expression (used to validate the syntax). Both
are updated to reflect the new position. The token itself is
returned as a pointer into the orginal buffer at TOK and TOKLEN.
If a parentheses is the next token, TOK will be set to NULL.
TOKLEN is checked to be within the bounds. On error a error code
is returned and all pointers should are not guaranteed to point to
a meanigful value. DEPTH should be initialized to 0 and will
reflect on return the actual depth of the tree. To detect the end
of the S-expression it is advisable to check DEPTH after a
successful return. */
gpg_error_t parse_sexp (unsigned char const **buf, size_t *buflen,
int *depth, unsigned char const **tok, size_t *toklen);
#endif /* SCD_TLV_H */

9
tools/ChangeLog
View File

@ -1,3 +1,10 @@
2005-05-20 Werner Koch <wk@g10code.com>
* gpg-connect-agent.c (add_definq, show_definq, clear_definq)
(handle_inquire): New.
(read_and_print_response): Handle INQUIRE command.
(main): Implement control commands.
2005-04-21 Werner Koch <wk@g10code.com>
* symcryptrun.c (main): Optionally allow the input file as command
@ -368,7 +375,7 @@
* watchgnupg.c: New.
Copyright 2003, 2004 Free Software Foundation, Inc.
Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
This file is free software; as a special exception the author gives
unlimited permission to copy and/or distribute it, with or without

223
tools/gpg-connect-agent.c
View File

@ -76,6 +76,23 @@ struct
} opt;
/* Definitions for /definq commands and a global linked list with all
the definitions. */
struct definq_s
{
struct definq_s *next;
char *name; /* Name of inquiry or NULL for any name. */
int is_prog; /* True if this is a program to run. */
char file[1]; /* Name of file or program. */
};
typedef struct definq_s *definq_t;
static definq_t definq_list;
static definq_t *definq_list_tail = &definq_list;
/*-- local prototypes --*/
static int read_and_print_response (assuan_context_t ctx);
static assuan_context_t start_agent (void);
@ -129,6 +146,68 @@ i18n_init(void)
#endif
}
/* Store an inquire response pattern. Note, that this function may
change the content of LINE. We assume that leading white spaces
are already removed. */
static void
add_definq (char *line, int is_prog)
{
definq_t d;
char *name, *p;
/* Get name. */
name = line;
for (p=name; *p && !spacep (p); p++)
;
if (*p)
*p++ = 0;
while (spacep (p))
p++;
d = xmalloc (sizeof *d + strlen (p) );
strcpy (d->file, p);
d->is_prog = is_prog;
if ( !strcmp (name, "*"))
d->name = NULL;
else
d->name = xstrdup (name);
d->next = NULL;
*definq_list_tail = d;
definq_list_tail = &d->next;
}
/* Show all inquiry defintions. */
static void
show_definq (void)
{
definq_t d;
for (d=definq_list; d; d = d->next)
if (d->name)
printf ("%-20s %c %s\n", d->name, d->is_prog? 'p':'f', d->file);
for (d=definq_list; d; d = d->next)
if (!d->name)
printf ("%-20s %c %s\n", "*", d->is_prog? 'p':'f', d->file);
}
/* Clear all inquiry definitions. */
static void
clear_definq (void)
{
while (definq_list)
{
definq_t tmp = definq_list->next;
xfree (definq_list->name);
xfree (definq_list);
definq_list = tmp;
}
definq_list_tail = &definq_list;
}
/* gpg-connect-agent's entry point. */
int
@ -138,7 +217,7 @@ main (int argc, char **argv)
const char *fname;
int no_more_options = 0;
assuan_context_t ctx;
char *line;
char *line, *p;
size_t linesize;
int rc;
@ -213,6 +292,57 @@ main (int argc, char **argv)
log_info (_("line shortened due to embedded Nul character\n"));
if (line[n-1] == '\n')
line[n-1] = 0;
if (*line == '/')
{
/* Handle control commands. */
char *cmd = line+1;
for (p=cmd; *p && !spacep (p); p++)
;
if (*p)
*p++ = 0;
while (spacep (p))
p++;
if (!strcmp (cmd, "definqfile"))
{
add_definq (p, 0);
}
else if (!strcmp (cmd, "definqprog"))
{
add_definq (p, 1);
}
else if (!strcmp (cmd, "showdef"))
{
show_definq ();
}
else if (!strcmp (cmd, "cleardef"))
{
clear_definq ();
}
else if (!strcmp (cmd, "echo"))
{
puts (p);
}
else if (!strcmp (cmd, "help"))
{
puts ("Available commands:\n"
"/echo ARGS Echo ARGS.\n"
"/definqfile NAME FILE\n"
" Use content of FILE for inquiries with NAME.\n"
" NAME may be \"*\" to match any inquiry.\n"
"/definqprog NAME PGM\n"
" Run PGM for inquiries matching NAME and pass the\n"
" entire line to it as arguments.\n"
"/showdef Print all definitions.\n"
"/cleardef Delete all definitions.\n"
"/help Print this help.");
}
else
log_error (_("unknown command `%s'\n"), cmd );
continue;
}
rc = assuan_write_line (ctx, line);
if (rc)
{
@ -234,6 +364,94 @@ main (int argc, char **argv)
}
/* Handle an Inquire from the server. Return False if it could not be
handled; in this case the caller shll complete the operation. LINE
is the complete line as received from the server. This function
may change the content of LINE. */
static int
handle_inquire (assuan_context_t ctx, char *line)
{
const char *name;
definq_t d;
FILE *fp;
char buffer[1024];
int rc, n;
/* Skip the command and trailing spaces. */
for (; *line && !spacep (line); line++)
;
while (spacep (line))
line++;
/* Get the name. */
name = line;
for (; *line && !spacep (line); line++)
;
if (*line)
*line++ = 0;
/* Now match it against our list. he second loop is todetect the
match all entry. **/
for (d=definq_list; d; d = d->next)
if (d->name && !strcmp (d->name, name))
break;
if (!d)
for (d=definq_list; d; d = d->next)
if (!d->name)
break;
if (!d)
{
if (opt.verbose)
log_info ("no handler for inquiry `%s' found\n", name);
return 0;
}
if (d->is_prog)
{
fp = popen (d->file, "r");
if (!fp)
log_error ("error executing `%s': %s\n", d->file, strerror (errno));
else if (opt.verbose)
log_error ("handling inquiry `%s' by running `%s'\n", name, d->file);
}
else
{
fp = fopen (d->file, "rb");
if (!fp)
log_error ("error opening `%s': %s\n", d->file, strerror (errno));
else if (opt.verbose)
log_error ("handling inquiry `%s' by returning content of `%s'\n",
name, d->file);
}
if (!fp)
return 0;
while ( (n = fread (buffer, 1, sizeof buffer, fp)) )
{
rc = assuan_send_data (ctx, buffer, n);
if (rc)
{
log_error ("sending data back failed: %s\n", assuan_strerror (rc) );
break;
}
}
if (ferror (fp))
log_error ("error reading from `%s': %s\n", d->file, strerror (errno));
rc = assuan_send_data (ctx, NULL, 0);
if (rc)
log_error ("sending data back failed: %s\n", assuan_strerror (rc) );
if (d->is_prog)
{
if (pclose (fp))
log_error ("error running `%s': %s\n", d->file, strerror (errno));
}
else
fclose (fp);
return 1;
}
/* Read all response lines from server and print them. Returns 0 on
success or an assuan error code. */
static int
@ -325,7 +543,8 @@ read_and_print_response (assuan_context_t ctx)
{
fwrite (line, linelen, 1, stdout);
putchar ('\n');
return 0;
if (!handle_inquire (ctx, line))
assuan_write_line (ctx, "CANCEL");
}
else if (linelen >= 3
&& line[0] == 'E' && line[1] == 'N' && line[2] == 'D'