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card: New command "apdu"

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* tools/card-call-scd.c (scd_apdu): Add optional arg 'options'.
* tools/gpg-card.c (cmd_apdu): New.
(enum cmdids): Add cmdAPDU.
(dispatch_command): Add command "apdu".
(interactive_loop): Ditto.
--

This command is hidden because it can be used to brick a card.  The
command is basically the same as sending "scd apdu" in
gpg-connect-agent but here we do full decoding and printing in hex.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-05-28 13:00:27 +02:00
parent 94d31660c6
commit ed0759f39b
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 108 additions and 9 deletions
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10
tools/card-call-scd.c
View file

@ -450,10 +450,11 @@ store_serialno (const char *line)
* stored at R_SW inless R_SW is NULL. With HEXAPDU being NULL only a
* RESET command is send to scd. With HEXAPDU being the string
* "undefined" the command "SERIALNO undefined" is send to scd. If
* R_DATA is not NULL the data is without the status code is stored
* there. Caller must release it. */
* R_DATA is not NULL the data without the status code is stored
* there. Caller must release it. If OPTIONS is not NULL, this will
* be passed verbatim to the SCDaemon's APDU command. */
gpg_error_t
scd_apdu (const char *hexapdu, unsigned int *r_sw,
scd_apdu (const char *hexapdu, const char *options, unsigned int *r_sw,
unsigned char **r_data, size_t *r_datalen)
{
gpg_error_t err;
@ -487,7 +488,8 @@ scd_apdu (const char *hexapdu, unsigned int *r_sw,
init_membuf (&mb, 256);
snprintf (line, DIM(line), "SCD APDU %s", hexapdu);
snprintf (line, DIM(line), "SCD APDU %s%s%s",
options?options:"", options?" -- ":"", hexapdu);
err = assuan_transact (agent_ctx, line,
put_membuf_cb, &mb, NULL, NULL, NULL, NULL);
if (!err)