* assuan-client.c (assuan_transact): Add 2 more arguments to

support status lines. Passing NULL yields the old behaviour. * assuan-handler.c (process_request): Flush data lines send without using the data fp.
2025-07-02 22:46:30 +02:00 · 2002-02-28 11:05:57 +00:00 · 2002-02-28 11:05:57 +00:00 · f8c8ca26d4
commit f8c8ca26d4
parent 04f49d973b
6 changed files with 242 additions and 4 deletions
--- a/agent/call-scd.c
+++ b/agent/call-scd.c
@ -0,0 +1,153 @@
+/* call-scd.c - fork of the scdaemon to do SC operations
+ *	Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "agent.h"
+#include "../assuan/assuan.h"
+
+#ifdef _POSIX_OPEN_MAX
+#define MAX_OPEN_FDS _POSIX_OPEN_MAX
+#else
+#define MAX_OPEN_FDS 20
+#endif
+
+static ASSUAN_CONTEXT scd_ctx = NULL;
+
+/* callback parameter for learn card */
+struct learn_parm_s {
+  int lines;
+  size_t size;
+  char *buffer;
+};
+
+
+
+
+/* Fork off the SCdaemon if this has not already been done */
+static int
+start_scd (void)
+{
+  int rc;
+  const char *pgmname;
+  ASSUAN_CONTEXT ctx;
+  const char *argv[3];
+
+  if (scd_ctx)
+    return 0; /* No need to serialize things because the agent is
+                 expected to tun as a single-thread (or may be in
+                 future using libpth) */
+
+  log_debug ("no running SCdaemon - starting it\n");
+      
+  if (fflush (NULL))
+    {
+      log_error ("error flushing pending output: %s\n", strerror (errno));
+      return seterr (Write_Error);
+    }
+
+  /* FIXME: change the default location of the program */
+  if (!opt.scdaemon_program || !*opt.scdaemon_program)
+    opt.scdaemon_program = "../scd/scdaemon";
+  if ( !(pgmname = strrchr (opt.scdaemon_program, '/')))
+    pgmname = opt.scdaemon_program;
+  else
+    pgmname++;
+
+  argv[0] = pgmname;
+  argv[1] = "--server";
+  argv[2] = NULL;
+
+  /* connect to the pinentry and perform initial handshaking */
+  rc = assuan_pipe_connect (&ctx, opt.scdaemon_program, (char**)argv, 0);
+  if (rc)
+    {
+      log_error ("can't connect to the SCdaemon: %s\n",
+                 assuan_strerror (rc));
+      return seterr (No_Scdaemon);
+    }
+  scd_ctx = ctx;
+  
+  log_debug ("connection to SCdaemon established\n");
+  return 0;
+}
+
+
+
+static AssuanError
+learn_status_cb (void *opaque, const char *line)
+{
+  struct learn_parm_s *parm = opaque;
+  const char *keyword = line;
+  int keywordlen;
+
+  for (keywordlen=0; *line && !spacep (line); line++, keywordlen++)
+    ;
+  while (spacep (line))
+    line++;
+  if (keywordlen == 11 && !memcmp (keyword, "KEYPAIRINFO", keywordlen))
+    {
+      log_debug ("learn_status_cb: keypair `%s'\n", line);
+    }
+  else if (keywordlen == 8 && !memcmp (keyword, "SERIALNO", keywordlen))
+    {
+      log_debug ("learn_status_cb: serialno `%s'\n", line);
+    }
+  else
+    log_debug ("learn_status_cb: ignoring `%.*s'\n", keywordlen, keyword);
+  
+  return 0;
+}
+
+/* Perform the learn command and return a list of all private keys
+   stored on the card. */
+int
+agent_learn_card (void)
+{
+  int rc;
+  struct learn_parm_s parm;
+
+  rc = start_scd ();
+  if (rc)
+    return rc;
+
+  rc = assuan_transact (scd_ctx, "RESET", NULL, NULL, NULL, NULL, NULL, NULL);
+  if (rc)
+    return map_assuan_err (rc);
+
+  memset (&parm, 0, sizeof parm);
+
+  rc = assuan_transact (scd_ctx, "LEARN --force",
+                        NULL, NULL, NULL, NULL,
+                        learn_status_cb, &parm);
+  if (rc)
+    return map_assuan_err (rc);
+
+  return 0;
+}
+