X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/86e3aea7faeeed443729e174fc1339f08b72086a..cca956b199841d754e8a78391d2e2c7efce4a3ee:/lib/base64.c

diff --git a/lib/base64.c b/lib/base64.c
index 7ba4730..2975333 100644
--- a/lib/base64.c
+++ b/lib/base64.c
@@ -1,6 +1,6 @@
 /*
  * This file is part of DisOrder
- * Copyright (C) 2005, 2007 Richard Kettlewell
+ * Copyright (C) 2005, 2007, 2008 Richard Kettlewell
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,12 +21,7 @@
  * @brief Support for MIME base64
  */
 
-#include <config.h>
-#include "types.h"
-
-#include <string.h>
-
-#include <stdio.h>
+#include "common.h"
 
 #include "mem.h"
 #include "base64.h"
@@ -38,7 +33,6 @@ static const char mime_base64_table[] =
 /** @brief Convert MIME base64
  * @param s base64 data
  * @param nsp Where to store length of converted data
- * @param table Table of characters to use
  * @return Decoded data
  *
  * See <a href="http://tools.ietf.org/html/rfc2045#section-6.8">RFC
@@ -51,6 +45,7 @@ char *mime_base64(const char *s, size_t *nsp) {
 /** @brief Convert base64
  * @param s base64 data
  * @param nsp Where to store length of converted data
+ * @param table Table of characters to use
  * @return Decoded data
  *
  * @p table should consist of 65 characters.  The first 64 will be used to
@@ -65,7 +60,14 @@ char *generic_base64(const char *s, size_t *nsp, const char *table) {
   dynstr_init(&d);
   n = 0;
   while((c = (unsigned char)*s++)) {
-    if((t = strchr(table, c))) {
+    if(c == table[64]) {
+      if(n >= 2) {
+	dynstr_append(&d, (b[0] << 2) + (b[1] >> 4));
+	if(n == 3)
+	  dynstr_append(&d, (b[1] << 4) + (b[2] >> 2));
+      }
+      break;
+    } else if((t = strchr(table, c))) {
       b[n++] = t - table;
       if(n == 4) {
 	dynstr_append(&d, (b[0] << 2) + (b[1] >> 4));
@@ -73,13 +75,6 @@ char *generic_base64(const char *s, size_t *nsp, const char *table) {
 	dynstr_append(&d, (b[2] << 6) + b[3]);
 	n = 0;
       }
-    } else if(c == table[64]) {
-      if(n >= 2) {
-	dynstr_append(&d, (b[0] << 2) + (b[1] >> 4));
-	if(n == 3)
-	  dynstr_append(&d, (b[1] << 4) + (b[2] >> 2));
-      }
-      break;
     }
   }
   if(nsp)