Mailing List Archive

Author: phk
Date: 2006-09-15 21:25:06 +0200 (Fri, 15 Sep 2006)
New Revision: 996

Added:
trunk/varnish-cache/lib/libvarnishapi/base64.c
Modified:
trunk/varnish-cache/include/varnishapi.h
trunk/varnish-cache/lib/libvarnishapi/Makefile.am
Log:
Add a base64 decoder.



Modified: trunk/varnish-cache/include/varnishapi.h
===================================================================
--- trunk/varnish-cache/include/varnishapi.h 2006-09-15 16:18:27 UTC (rev 995)
+++ trunk/varnish-cache/include/varnishapi.h 2006-09-15 19:25:06 UTC (rev 996)
@@ -7,6 +7,10 @@

#define V_DEAD __attribute__ ((noreturn))

+/* base64.c */
+void base64_init(void);
+int base64_decode(char *d, unsigned dlen, const char *s);
+
/* shmlog.c */
typedef int vsl_handler(void *priv, unsigned tag, unsigned fd, unsigned len, unsigned spec, const char *ptr);
#define VSL_S_CLIENT (1 << 0)

Modified: trunk/varnish-cache/lib/libvarnishapi/Makefile.am
===================================================================
--- trunk/varnish-cache/lib/libvarnishapi/Makefile.am 2006-09-15 16:18:27 UTC (rev 995)
+++ trunk/varnish-cache/lib/libvarnishapi/Makefile.am 2006-09-15 19:25:06 UTC (rev 996)
@@ -5,6 +5,7 @@
lib_LTLIBRARIES = libvarnishapi.la

libvarnishapi_la_SOURCES = \
+ base64.c \
shmlog.c

libvarnishapi_la_CFLAGS = -include config.h

Added: trunk/varnish-cache/lib/libvarnishapi/base64.c
===================================================================
--- trunk/varnish-cache/lib/libvarnishapi/base64.c 2006-09-15 16:18:27 UTC (rev 995)
+++ trunk/varnish-cache/lib/libvarnishapi/base64.c 2006-09-15 19:25:06 UTC (rev 996)
@@ -0,0 +1,78 @@
+/* $Id$ */
+
+static const char *b64 =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static char i64[256];
+
+void
+base64_init(void)
+{
+ int i;
+ const char *p;
+
+ for (i = 0; i < 256; i++)
+ i64[i] = -1;
+ for (p = b64, i = 0; *p; p++, i++)
+ i64[*p] = i;
+ i64['='] = 0;
+}
+
+int
+base64_decode(char *d, unsigned dlen, const char *s)
+{
+ unsigned u, v, l;
+ int i;
+
+ l = 0;
+ while (*s) {
+ for (v = 0; v < 4; v++) {
+ if (!*s)
+ break;
+ i = i64[*s++];
+ if (i < 0)
+ return (-1);
+ u <<= 6;
+ u |= i;
+ }
+ for (v = 0; v < 3; v++) {
+ if (l >= dlen - 1)
+ return (-1);
+ *d = (u >> 16) & 0xff;
+ u <<= 8;
+ l++;
+ d++;
+ }
+ }
+ printf("\n");
+ *d = '\0';
+ return (0);
+}
+
+#ifdef TEST_DRIVER
+#include <stdio.h>
+
+const char *test1 =
+"TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0aGlz"
+"IHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2Yg"
+"dGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu"
+"dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRo"
+"ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=";
+
+int
+main(int argc, char **argv)
+{
+ int i;
+ char buf[BUFSIZ];
+ unsigned l;
+
+ (void)argc;
+ (void)argv;
+
+ base64_init();
+ l = sizeof buf;
+ base64_decode(buf, &l, test1);
+ printf("%s\n", buf);
+ return (0);
+}
+#endif