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scd: New getinfo subcommand "dump_state".

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* scd/command.c (cmd_getinfo): Add subcommand.  Always init CTRL for
simplicity.
--

A state dump looks like

  app_dump_state: card=0x00007f1b38017c90 slot=1 type=yubikey refcount=1
  app_dump_state:   app=0x00007f1b38018100 type='openpgp'
  app_dump_state:   app=0x00007f1b3800cb70 type='piv'
  app_dump_state: card=0x00007f1b38013a10 slot=0 type=gnuk refcount=0
  app_dump_state:   app=0x00007f1b38016fc0 type='openpgp'

and can also be triggered by a SIGUSR1.  This explicit command allows
to dump the state also on Windows.  Use for example

  gpg-connect-agent 'scd getinfo dump_state' /bye
This commit is contained in:
Werner Koch 2024-08-02 13:44:57 +02:00
parent 658a139d68
commit b614309876
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 7 additions and 4 deletions
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11
scd/command.c
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@ -1874,11 +1874,13 @@ static const char hlp_getinfo[] =
" - Return a list of active apps on all inserted cards.\n" " - Return a list of active apps on all inserted cards.\n"
" cmd_has_option CMD OPT\n" " cmd_has_option CMD OPT\n"
" - Returns OK if command CMD has option OPT.\n" " - Returns OK if command CMD has option OPT.\n"
" dump_state - Dump internal infos to the log stream.\n"
" apdu_strerror NUMBER\n" " apdu_strerror NUMBER\n"
" - Return a string for a status word.\n"; " - Return a string for a status word.\n";
static gpg_error_t static gpg_error_t
cmd_getinfo (assuan_context_t ctx, char *line) cmd_getinfo (assuan_context_t ctx, char *line)
{ {
ctrl_t ctrl = assuan_get_pointer (ctx);
int rc = 0; int rc = 0;
const char *s; const char *s;
@ -1898,6 +1900,7 @@ cmd_getinfo (assuan_context_t ctx, char *line)
&& (line[14] == ' ' || line[14] == '\t' || !line[14])) && (line[14] == ' ' || line[14] == '\t' || !line[14]))
{ {
char *cmd, *cmdopt; char *cmd, *cmdopt;
line += 14; line += 14;
while (*line == ' ' || *line == '\t') while (*line == ' ' || *line == '\t')
line++; line++;
@ -1943,7 +1946,6 @@ cmd_getinfo (assuan_context_t ctx, char *line)
} }
else if (!strcmp (line, "status")) else if (!strcmp (line, "status"))
{ {
ctrl_t ctrl = assuan_get_pointer (ctx);
char flag; char flag;
if (open_card (ctrl)) if (open_card (ctrl))
@ -1980,13 +1982,11 @@ cmd_getinfo (assuan_context_t ctx, char *line)
} }
else if (!strcmp (line, "card_list")) else if (!strcmp (line, "card_list"))
{ {
ctrl_t ctrl = assuan_get_pointer (ctx);
rc = app_send_card_list (ctrl); rc = app_send_card_list (ctrl);
} }
else if (!strcmp (line, "active_apps")) else if (!strcmp (line, "active_apps"))
{ {
ctrl_t ctrl = assuan_get_pointer (ctx);
card_t card = card_get (ctrl, NULL); card_t card = card_get (ctrl, NULL);
if (!card) if (!card)
@ -1999,7 +1999,6 @@ cmd_getinfo (assuan_context_t ctx, char *line)
} }
else if (!strcmp (line, "all_active_apps")) else if (!strcmp (line, "all_active_apps"))
{ {
ctrl_t ctrl = assuan_get_pointer (ctx);
rc = app_send_active_apps (NULL, ctrl); rc = app_send_active_apps (NULL, ctrl);
} }
else if ((s=has_leading_keyword (line, "apdu_strerror"))) else if ((s=has_leading_keyword (line, "apdu_strerror")))
@ -2008,6 +2007,10 @@ cmd_getinfo (assuan_context_t ctx, char *line)
s = apdu_strerror (ul); s = apdu_strerror (ul);
rc = assuan_send_data (ctx, s, strlen (s)); rc = assuan_send_data (ctx, s, strlen (s));
} }
else if (!strcmp (line, "dump_state"))
{
app_dump_state ();
}
else else
rc = set_error (GPG_ERR_ASS_PARAMETER, "unknown value for WHAT"); rc = set_error (GPG_ERR_ASS_PARAMETER, "unknown value for WHAT");
return rc; return rc;