1 files changed, 66 insertions, 0 deletions
diff --git a/src/base64.c b/src/base64.c
new file mode 100644
index 0000000..fbf07cb
--- /dev/null
+++ b/src/base64.c
@@ -0,0 +1,66 @@
+/*
+ * transmission-remote-gtk - A GTK RPC client to Transmission
+ * Copyright (C) 2010  Alan Fitton
+
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "base64.h"
+
+static const char cb64[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+void encodeblock(unsigned char in[3], unsigned char out[4], int len)
+{
+    out[0] = cb64[in[0] >> 2];
+    out[1] = cb64[((in[0] & 0x03) << 4) | ((in[1] & 0xf0) >> 4)];
+    out[2] =
+	(unsigned char) (len >
+			 1 ? cb64[((in[1] & 0x0f) << 2) |
+				  ((in[2] & 0xc0) >> 6)] : '=');
+    out[3] = (unsigned char) (len > 2 ? cb64[in[2] & 0x3f] : '=');
+}
+
+char *base64encode(char *filename)
+{
+    FILE *infile = fopen(filename, "rb");
+    unsigned char in[3], out[4];
+    int i, len, j = 0;
+    char *output = NULL;
+    while (!feof(infile)) {
+	len = 0;
+	for (i = 0; i < 3; i++) {
+	    in[i] = (unsigned char) getc(infile);
+	    if (!feof(infile)) {
+		len++;
+	    } else {
+		in[i] = 0;
+	    }
+	}
+	if (len) {
+	    output = (char *) realloc(output, j + 5);
+	    encodeblock(in, out, len);
+	    for (i = 0; i < 4; i++) {
+		output[j++] = out[i];
+	    }
+	}
+    }
+    output[j] = '\0';
+    fclose(infile);
+    return output;
+}