1 files changed, 75 insertions, 0 deletions
diff --git a/g10/kbxio.c b/g10/kbxio.c
new file mode 100644
index 000000000..6c4437bf8
--- /dev/null
+++ b/g10/kbxio.c
@@ -0,0 +1,75 @@
+/* kbxio.c - KBX I/O handling
+ *	Copyright (C) 2000 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <gcrypt.h>
+
+#include "iobuf.h"
+#include "util.h"
+#include "kbx.h"
+
+
+int
+kbx_read_blob ( KBXBLOB *r_blob, FILE *a )
+{
+    char *image;
+    size_t imagelen = 0;
+    int c1, c2, c3, c4;
+    int rc;
+
+    *r_blob = NULL;
+    if (    (c1 = getc ( a )) == EOF
+	 || (c2 = getc ( a )) == EOF
+	 || (c3 = getc ( a )) == EOF
+	 || (c4 = getc ( a )) == EOF ) {
+	if ( c1 == EOF && !ferror ( a ) )
+	    return -1;
+	return GPGERR_GENERAL;
+    }
+    imagelen = (c1 << 24) | (c2 << 16) | (c3 << 8 ) | c4;
+    if ( imagelen > 500000 ) { /* sanity check:blob too large */
+	return GPGERR_GENERAL;
+    }
+    else if ( imagelen < 4 ) { /* blobtoo short */
+	return GPGERR_GENERAL;
+    }
+    image = gcry_malloc ( imagelen );
+    if ( !image ) {
+	return GPGERR_GENERAL;
+    }
+
+    image[0] = c1; image[1] = c2; image[2] = c3; image[3] = c4;
+    if ( fread ( image+4, imagelen-4, 1, a ) != 1 )  {
+	gcry_free ( image );
+	return GPGERR_GENERAL;
+    }
+
+    rc = kbx_new_blob ( r_blob, image, imagelen );
+    return rc;
+}
+
+
+