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Some experimental code - don't use it.

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This commit is contained in:
Werner Koch 2002-02-18 20:47:17 +00:00
parent 1df38417a3
commit 49b3340e0f
4 changed files with 315 additions and 16 deletions
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97
scd/command.c
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@ -18,9 +18,6 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* FIXME: we should not use the default assuan buffering but setup
some buffering in secure mempory to protect session keys etc. */
#include <config.h>
#include <errno.h>
#include <stdio.h>
@ -40,32 +37,103 @@ struct server_local_s {
};
/* Check whether the option NAME appears in LINE */
static int
has_option (const char *line, const char *name)
{
const char *s;
int n = strlen (name);
s = strstr (line, name);
return (s && (s == line || spacep (s-1)) && (!s[n] || spacep (s+n)));
}
/* Note, that this reset_notify is also used for cleanup purposes. */
static void
reset_notify (ASSUAN_CONTEXT ctx)
{
/* CTRL ctrl = assuan_get_pointer (ctx); */
CTRL ctrl = assuan_get_pointer (ctx);
if (ctrl->card_ctx)
{
card_close (ctrl->card_ctx);
ctrl->card_ctx = NULL;
}
}
static int
option_handler (ASSUAN_CONTEXT ctx, const char *key, const char *value)
{
/* CTRL ctrl = assuan_get_pointer (ctx); */
/* if (!strcmp (key, "foo")) */
/* { */
/* } */
/* else */
/* return ASSUAN_Invalid_Option; */
return 0;
}
/* LEARN [--force]
Learn all useful information of the currently inserted card. When
used without the force options, the command might to an INQUIRE
like this:
INQUIRE KNOWNCARDP <hexstring_with_serialNumber> <timestamp>
The client should just send an "END" if the processing should go on
or a "CANCEL" to force the function to terminate with a Cancel
error message.
*/
static int
cmd_learn (ASSUAN_CONTEXT ctx, char *line)
{
CTRL ctrl = assuan_get_pointer (ctx);
int rc = 0;
/* if this is the first command issued for a new card, open the card and
and create a context */
if (!ctrl->card_ctx)
{
rc = card_open (&ctrl->card_ctx);
if (rc)
return map_to_assuan_status (rc);
}
/* Unless the force option is used we try a shortcut by identifying
the card using a serial number and inquiring the client with
that. The client may choose to cancel the operation if he already
knows about this card */
if (!has_option (line, "--force"))
{
char *serial;
time_t stamp;
char *command;
rc = card_get_serial_and_stamp (ctrl->card_ctx, &serial, &stamp);
if (rc)
return map_to_assuan_status (rc);
rc = asprintf (&command, "KNOWNCARDP %s %lu",
serial, (unsigned long)stamp);
xfree (serial);
if (rc < 0)
return ASSUAN_Out_Of_Core;
rc = 0;
rc = assuan_inquire (ctx, command, NULL, NULL, 0);
free (command); /* (must use standard free here) */
if (rc)
{
if (rc != ASSUAN_Canceled)
log_error ("inquire KNOWNCARDP failed: %s\n",
assuan_strerror (rc));
return rc;
}
/* not canceled, so we have to proceeed */
}
return map_to_assuan_status (rc);
}
@ -81,6 +149,7 @@ register_commands (ASSUAN_CONTEXT ctx)
int cmd_id;
int (*handler)(ASSUAN_CONTEXT, char *line);
} table[] = {
{ "LEARN", 0, cmd_learn },
{ "", ASSUAN_CMD_INPUT, NULL },
{ "", ASSUAN_CMD_OUTPUT, NULL },
{ NULL }
@ -168,7 +237,7 @@ scd_command_handler (int listen_fd)
continue;
}
}
reset_notify (ctx); /* used for cleanup */
assuan_deinit_server (ctx);
}