- djm@cvs.openbsd.org 2010/01/30 02:54:53

[openssh.git] / uuencode.c

diff --git a/uuencode.c b/uuencode.c
index fc84d5a5830b591b5ea192542eb341fedfe1eb00..b9e57e9934b19230e0439ded130178eac7e5eebe 100644 (file)
--- a/uuencode.c
+++ b/uuencode.c
@@ -1,20 +1,58 @@
+/* $OpenBSD: uuencode.c,v 1.25 2009/03/05 11:30:50 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 #include "includes.h"
-#include "xmalloc.h"
 
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <resolv.h>
+#include <stdio.h>
 
+#include "xmalloc.h"
+#include "uuencode.h"
+
+/*
+ * Encode binary 'src' of length 'srclength', writing base64-encoded text
+ * to 'target' of size 'targsize'. Will always nul-terminate 'target'.
+ * Returns the number of bytes stored in 'target' or -1 on error (inc.
+ * 'targsize' too small).
+ */
 int
-uuencode(unsigned char *src, unsigned int srclength,
+uuencode(const u_char *src, u_int srclength,
     char *target, size_t targsize)
 {
        return __b64_ntop(src, srclength, target, targsize);
 }
 
+/*
+ * Decode base64-encoded 'src' into buffer 'target' of 'targsize' bytes.
+ * Will skip leading and trailing whitespace. Returns the number of bytes
+ * stored in 'target' or -1 on error (inc. targsize too small).
+ */
 int
-uudecode(const char *src, unsigned char *target, size_t targsize)
+uudecode(const char *src, u_char *target, size_t targsize)
 {
        int len;
        char *encoded, *p;
@@ -26,7 +64,7 @@ uudecode(const char *src, unsigned char *target, size_t targsize)
                ;
        for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
                ;
-       /* and remote trailing whitespace because __b64_pton needs this */
+       /* and remove trailing whitespace because __b64_pton needs this */
        *p = '\0';
        len = __b64_pton(encoded, target, targsize);
        xfree(encoded);
@@ -34,10 +72,16 @@ uudecode(const char *src, unsigned char *target, size_t targsize)
 }
 
 void
-dump_base64(FILE *fp, unsigned char *data, int len)
+dump_base64(FILE *fp, u_char *data, u_int len)
 {
-       unsigned char *buf = xmalloc(2*len);
+       char *buf;
        int i, n;
+
+       if (len > 65536) {
+               fprintf(fp, "dump_base64: len > 65536\n");
+               return;
+       }
+       buf = xmalloc(2*len);
        n = uuencode(data, len, buf, 2*len);
        for (i = 0; i < n; i++) {
                fprintf(fp, "%c", buf[i]);