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f8c8ca26d4
support status lines. Passing NULL yields the old behaviour. * assuan-handler.c (process_request): Flush data lines send without using the data fp.
154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/* call-scd.c - fork of the scdaemon to do SC operations
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* Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "agent.h"
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#include "../assuan/assuan.h"
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#ifdef _POSIX_OPEN_MAX
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#define MAX_OPEN_FDS _POSIX_OPEN_MAX
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#else
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#define MAX_OPEN_FDS 20
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#endif
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static ASSUAN_CONTEXT scd_ctx = NULL;
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/* callback parameter for learn card */
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struct learn_parm_s {
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int lines;
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size_t size;
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char *buffer;
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};
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/* Fork off the SCdaemon if this has not already been done */
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static int
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start_scd (void)
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{
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int rc;
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const char *pgmname;
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ASSUAN_CONTEXT ctx;
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const char *argv[3];
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if (scd_ctx)
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return 0; /* No need to serialize things because the agent is
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expected to tun as a single-thread (or may be in
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future using libpth) */
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log_debug ("no running SCdaemon - starting it\n");
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if (fflush (NULL))
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{
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log_error ("error flushing pending output: %s\n", strerror (errno));
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return seterr (Write_Error);
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}
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/* FIXME: change the default location of the program */
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if (!opt.scdaemon_program || !*opt.scdaemon_program)
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opt.scdaemon_program = "../scd/scdaemon";
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if ( !(pgmname = strrchr (opt.scdaemon_program, '/')))
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pgmname = opt.scdaemon_program;
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else
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pgmname++;
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argv[0] = pgmname;
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argv[1] = "--server";
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argv[2] = NULL;
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/* connect to the pinentry and perform initial handshaking */
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rc = assuan_pipe_connect (&ctx, opt.scdaemon_program, (char**)argv, 0);
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if (rc)
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{
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log_error ("can't connect to the SCdaemon: %s\n",
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assuan_strerror (rc));
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return seterr (No_Scdaemon);
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}
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scd_ctx = ctx;
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log_debug ("connection to SCdaemon established\n");
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return 0;
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}
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static AssuanError
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learn_status_cb (void *opaque, const char *line)
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{
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struct learn_parm_s *parm = opaque;
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const char *keyword = line;
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int keywordlen;
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for (keywordlen=0; *line && !spacep (line); line++, keywordlen++)
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;
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while (spacep (line))
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line++;
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if (keywordlen == 11 && !memcmp (keyword, "KEYPAIRINFO", keywordlen))
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{
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log_debug ("learn_status_cb: keypair `%s'\n", line);
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}
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else if (keywordlen == 8 && !memcmp (keyword, "SERIALNO", keywordlen))
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{
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log_debug ("learn_status_cb: serialno `%s'\n", line);
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}
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else
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log_debug ("learn_status_cb: ignoring `%.*s'\n", keywordlen, keyword);
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return 0;
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}
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/* Perform the learn command and return a list of all private keys
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stored on the card. */
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int
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agent_learn_card (void)
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{
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int rc;
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struct learn_parm_s parm;
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rc = start_scd ();
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if (rc)
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return rc;
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rc = assuan_transact (scd_ctx, "RESET", NULL, NULL, NULL, NULL, NULL, NULL);
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if (rc)
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return map_assuan_err (rc);
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memset (&parm, 0, sizeof parm);
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rc = assuan_transact (scd_ctx, "LEARN --force",
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NULL, NULL, NULL, NULL,
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learn_status_cb, &parm);
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if (rc)
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return map_assuan_err (rc);
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return 0;
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}
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