From: wessels <>
Date: Tue, 16 Jul 1996 06:03:01 +0000 (+0000)
Subject: By Henrik for FTP auth stuff
X-Git-Tag: SQUID_3_0_PRE1~6054
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0c05d982e3c1aa51dea048e8cfcc5d3490b6c740;p=thirdparty%2Fsquid.git

By Henrik for FTP auth stuff
---

diff --git a/lib/base64.c b/lib/base64.c
new file mode 100644
index 0000000000..7ac882bfd7
--- /dev/null
+++ b/lib/base64.c
@@ -0,0 +1,60 @@
+#include "config.h"
+
+#if HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+static int base64_initialized = 0;
+int base64_value[256];
+char base64_code[] = "ABCDEFGHIJKLMNOPQRSTUVWZYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static void base64_init()
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+	base64_value[i] = -1;
+
+    for (i = 0; i < 64; i++)
+	base64_value[(int) base64_code[i]] = i;
+    base64_value['='] = 0;
+
+    base64_initialized = 1;
+}
+
+char *base64_decode(p)
+     unsigned char *p;
+{
+    static char result[8192];
+    int c;
+    long val;
+    int i;
+    char *d;
+
+    if (!p)
+	return p;
+
+    if (!base64_initialized)
+	base64_init();
+
+    val = c = 0;
+    d = result;
+    while (*p) {
+	i = base64_value[(int) *p++];
+	if (i >= 0) {
+	    val = val * 64 + i;
+	    c++;
+	}
+	if (c == 4) {		/* One quantum of four encoding characters/24 bit */
+	    *d++ = val >> 16;	/* High 8 bits */
+	    *d++ = (val >> 8) & 0xff;	/* Mid 8 bits */
+	    *d++ = val & 0xff;	/* Low 8 bits */
+	    val = c = 0;
+	}
+    }
+
+    return *result ? result : NULL;
+}