Updated Assuan to the current version

1 files changed, 180 insertions, 0 deletions

diff --git a/assuan/assuan-client.c b/assuan/assuan-client.c
new file mode 100644
index 00000000..a555cf33
--- /dev/null
+++ b/assuan/assuan-client.c
@@ -0,0 +1,180 @@
+/* assuan-client.c - client functions
+ *	Copyright (C) 2001 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 <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include "assuan-defs.h"
+
+#define xtoi_1(p)   (*(p) <= '9'? (*(p)- '0'): \
+                     *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
+#define xtoi_2(p)   ((xtoi_1(p) * 16) + xtoi_1((p)+1))
+
+
+AssuanError
+_assuan_read_from_server (ASSUAN_CONTEXT ctx, int *okay, int *off)
+{
+  char *line;
+  int linelen;
+  AssuanError rc;
+
+  *okay = 0;
+  *off = 0;
+  do 
+    {
+      rc = _assuan_read_line (ctx);
+      if (rc)
+        return rc;
+      line = ctx->inbound.line;
+      linelen = ctx->inbound.linelen;
+    }    
+  while (*line == '#' || !linelen);
+
+  if (linelen >= 1
+      && line[0] == 'D' && line[1] == ' ')
+    {
+      *okay = 2; /* data line */
+      *off = 2;
+    }
+  else if (linelen >= 2
+           && line[0] == 'O' && line[1] == 'K'
+           && (line[2] == '\0' || line[2] == ' '))
+    {
+      *okay = 1;
+      *off = 2;
+    }
+  else if (linelen >= 3
+           && line[0] == 'E' && line[1] == 'R' && line[2] == 'R'
+           && (line[3] == '\0' || line[3] == ' '))
+    {
+      *okay = 0;
+      *off = 3;
+    }  
+  else if (linelen >= 7
+           && line[0] == 'I' && line[1] == 'N' && line[2] == 'Q'
+           && line[3] == 'U' && line[4] == 'I' && line[5] == 'R'
+           && line[6] == 'E' 
+           && (line[7] == '\0' || line[7] == ' '))
+    {
+      *okay = 3;
+      *off = 7;
+    }
+  else
+    rc = ASSUAN_Invalid_Response;
+  return rc;
+}
+
+
+
+/**
+ * assuan_transact:
+ * @ctx: The Assuan context
+ * @command: Coimmand line to be send to server
+ * @data_cb: Callback function for data lines
+ * @data_cb_arg: first argument passed to @data_cb
+ * @inquire_cb: Callback function for a inquire response
+ * @inquire_cb_arg: first argument passed to @inquire_cb
+ * 
+ * FIXME: Write documentation
+ * 
+ * Return value: 0 on success or error code.  The error code may be
+ * the one one returned by the server in error lines or from the
+ * callback functions.
+ **/
+AssuanError
+assuan_transact (ASSUAN_CONTEXT ctx,
+                 const char *command,
+                 AssuanError (*data_cb)(void *, const void *, size_t),
+                 void *data_cb_arg,
+                 AssuanError (*inquire_cb)(void*, const char *),
+                 void *inquire_cb_arg)
+{
+  int rc, okay, off;
+  unsigned char *line;
+  int linelen;
+
+  rc = assuan_write_line (ctx, command);
+  if (rc)
+    return rc;
+
+ again:
+  rc = _assuan_read_from_server (ctx, &okay, &off);
+  if (rc)
+    return rc; /* error reading from server */
+
+  line = ctx->inbound.line + off;
+  linelen = ctx->inbound.linelen - off;
+
+  if (!okay)
+    {
+      rc = atoi (line);
+      if (rc < 100)
+        rc = ASSUAN_Server_Fault;
+    }
+  else if (okay == 2)
+    {
+      if (!data_cb)
+        rc = ASSUAN_No_Data_Callback;
+      else 
+        {
+          unsigned char *s, *d;
+
+          for (s=d=line; linelen; linelen--)
+            {
+              if (*s == '%' && linelen > 2)
+                { /* handle escaping */
+                  s++;
+                  *d++ = xtoi_2 (s);
+                  s += 2;
+                  linelen -= 2;
+                }
+              else
+                *d++ = *s++;
+            }
+          *d = 0; /* add a hidden string terminator */
+          rc = data_cb (data_cb_arg, line, d - line);
+          if (!rc)
+            goto again;
+        }
+    }
+  else if (okay == 3)
+    {
+      if (!inquire_cb)
+        {
+          assuan_write_line (ctx, "END"); /* get out of inquire mode */
+          _assuan_read_from_server (ctx, &okay, &off); /* dummy read */
+          rc = ASSUAN_No_Inquire_Callback;
+        }
+      else
+        {
+          rc = inquire_cb (inquire_cb_arg, line);
+          if (!rc)
+            rc = assuan_send_data (ctx, NULL, 0); /* flush and send END */
+          if (!rc)
+            goto again;
+        }
+    }
+
+  return rc;
+}