1 files changed, 171 insertions, 0 deletions
diff --git a/util/assuan-util.c b/util/assuan-util.c
new file mode 100644
index 0000000..db3cb72
--- /dev/null
+++ b/util/assuan-util.c
@@ -0,0 +1,171 @@
+/* assuan-util.c - Utility functions for Assuan 
+ * Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ * Copyright (C) 2005 Free Software Foundation, Inc.
+ *
+ * This file is part of Assuan.
+ *
+ * Assuan is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Assuan 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA. 
+ */
+
+/* Please note that this is a stripped down and modified version of
+   the orginal Assuan code from libassuan. */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "assuan-defs.h"
+
+
+
+/* Store the error in the context so that the error sending function
+  can take out a descriptive text.  Inside the assuan code, use the
+  macro set_error instead of this function. */
+int
+assuan_set_error (assuan_context_t ctx, int err, const char *text)
+{
+  ctx->err_no = err;
+  ctx->err_str = text;
+  return err;
+}
+
+void
+assuan_set_pointer (assuan_context_t ctx, void *pointer)
+{
+  if (ctx)
+    ctx->user_pointer = pointer;
+}
+
+void *
+assuan_get_pointer (assuan_context_t ctx)
+{
+  return ctx? ctx->user_pointer : NULL;
+}
+
+
+void
+assuan_set_log_stream (assuan_context_t ctx, FILE *fp)
+{
+  if (ctx)
+    {
+      if (ctx->log_fp)
+        fflush (ctx->log_fp);
+      ctx->log_fp = fp;
+      _assuan_set_default_log_stream (fp);
+    }
+}
+
+
+void
+assuan_begin_confidential (assuan_context_t ctx)
+{
+  if (ctx)
+    {
+      ctx->confidential = 1;
+    }
+}
+
+void
+assuan_end_confidential (assuan_context_t ctx)
+{
+  if (ctx)
+    {
+      ctx->confidential = 0;
+    }
+}
+
+/* Dump a possibly binary string (used for debugging).  Distinguish
+   ascii text from binary and print it accordingly.  */
+void
+_assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length)
+{
+  const unsigned char *s;
+  int n;
+
+  for (n=length,s=buffer; n; n--, s++)
+    if  ((!isascii (*s) || iscntrl (*s) || !isprint (*s)) && !(*s >= 0x80))
+      break;
+
+  s = buffer;
+  if (!n && *s != '[')
+    fwrite (buffer, length, 1, fp);
+  else
+    {
+      putc ('[', fp);
+      for (n=0; n < length; n++, s++)
+          fprintf (fp, " %02x", *s);
+      putc (' ', fp);
+      putc (']', fp);
+    }
+}
+
+/* Log a user supplied string.  Escapes non-printable before
+   printing.  */
+void
+_assuan_log_sanitized_string (const char *string)
+{
+  const unsigned char *s = string;
+  FILE *fp = assuan_get_assuan_log_stream ();
+
+  if (! *s)
+    return;
+
+  for (; *s; s++)
+    {
+      int c = 0;
+
+      switch (*s)
+	{
+	case '\r':
+	  c = 'r';
+	  break;
+
+	case '\n':
+	  c = 'n';
+	  break;
+
+	case '\f':
+	  c = 'f';
+	  break;
+
+	case '\v':
+	  c = 'v';
+	  break;
+
+	case '\b':
+	  c = 'b';
+	  break;
+
+	default:
+	  if ((isascii (*s) && isprint (*s)) || (*s >= 0x80))
+	    putc (*s, fp);
+	  else
+	    {
+	      putc ('\\', fp);
+	      fprintf (fp, "x%02x", *s);
+	    }
+	}
+
+      if (c)
+	{
+	  putc ('\\', fp);
+	  putc (c, fp);
+	}
+    }
+}
+