Drop support for Varnish 3

* configure.ac: Use pkg-config. Save Varnishapi version
in VARNISHAPI_MAJOR, VARNISHAPI_MINOR, VARNISHAPI_PATCH
Refuse to run if it is prior to 4.1
* src/Makefile.am: Remove conditionals
* src/tbf.h: Remove Varnish 3.0 defines
* src/vmod-tbf.3: Update
* tests/Makefile.am: Remove conditionals
* tests/test00.vti: Rename to tests/test00.vtc
* tests/test02.vti: Rename to tests/test02.vtc

7 files changed, 55 insertions, 73 deletions

diff --git a/configure.ac b/configure.ac
index f8e19de..8041a57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 # This file is part of vmod-tbf -*- autoconf -*-
-# Copyright (C) 2013-2014 Sergey Poznyakoff
+# Copyright (C) 2013-2016 Sergey Poznyakoff
 #
 # Vmod-tbf is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -67,17 +67,37 @@ case "$VARNISHSRC" in
 esac
 
 VARNISHSRC=`cd $VARNISHSRC && pwd`
-VARNISHVERSION=
-AC_CHECK_FILE([$VARNISHSRC/include/varnishapi.h],
-  [VARNISHVERSION=3],
-  [AC_CHECK_FILE([$VARNISHSRC/include/vapi/vsm.h],
-     [VARNISHVERSION=4],
-     [AC_MSG_FAILURE(["$VARNISHSRC" is not a Varnish source directory])]) ])
-AC_SUBST([VARNISHVERSION],$VARNISHVERSION)
-
-AC_DEFINE_UNQUOTED([VARNISHVERSION],$VARNISHVERSION,[Varnish major version number])
-AM_CONDITIONAL([VARNISH3],[test $VARNISHVERSION -eq 3])
-AM_CONDITIONAL([VARNISH4],[test $VARNISHVERSION -eq 4])
+
+
+# pkg-config
+PKG_PROG_PKG_CONFIG
+PKG_CHECK_MODULES([libvarnishapi], [varnishapi])
+
+varnishapi_version() {
+    VARNISHAPI_MAJOR=$1
+    VARNISHAPI_MINOR=$2
+    VARNISHAPI_PATCH=$3
+}
+
+v=$($PKG_CONFIG --modversion varnishapi)
+if test -n "$v"; then
+    save_IFS=$IFS
+    IFS='.'
+    varnishapi_version $v
+    IFS=$save_IFS
+else
+    AC_MSG_ERROR([unknown varnishapi version])
+fi
+
+if test $VARNISHAPI_MAJOR -ne 4; then
+    AC_MSG_ERROR([unsupported varnishapi version])
+fi
+
+case $VARNISHAPI_MINOR in
+0)  AC_MSG_ERROR([unsupported varnishapi version]);;
+1)  ;;
+*)  AC_MSG_WARN([varnishapi minor version probably unsupported])
+esac
 
 # Check that varnishtest is built in the varnish source directory
 AC_CHECK_FILE([$VARNISHSRC/bin/varnishtest/varnishtest],
@@ -94,7 +114,7 @@ AC_ARG_WITH([vmoddir],
    /*)   VMODDIR=$withval;;
    no)   unset VMODDIR;;
    *)    AC_MSG_ERROR([argument to --with-vmoddir must be absolute pathname])
-   esac],[VMODDIR=`pkg-config --variable=vmoddir varnishapi`
+   esac],[VMODDIR=$($PKG_CONFIG --variable=vmoddir varnishapi)
    if test -z "$VMODDIR"; then
         AC_MSG_FAILURE([cannot determine vmod installation directory])
    fi])
@@ -126,10 +146,12 @@ AC_CONFIG_COMMANDS([status],[
 delim="-------------------------------------------------------------------"
 echo ""
 echo $delim
-echo "Building for Varnish version $VARNISHVERSION"
+echo "Building for Varnish version $VARNISHAPI_MAJOR.$VARNISHAPI_MINOR"
 echo $delim
 ],
-[VARNISHVERSION=$VARNISHVERSION])
+[VARNISHAPI_MAJOR=$VARNISHAPI_MAJOR
+VARNISHAPI_MINOR=$VARNISHAPI_MINOR
+])
 
 AC_CONFIG_FILES([
         Makefile
diff --git a/src/Makefile.am b/src/Makefile.am
index 214af8f..7d4e194 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -41,21 +41,10 @@ tbf.lo: vcc_if.h
 
 CLEANFILES = vcc_if.c vcc_if.h *.rst
 
-if VARNISH4
-  vmodtool = $(VARNISHSRC)/lib/libvcc/vmodtool.py
-  vmodtoolargs = --strict
-  vccfile = $(top_srcdir)/src/vmod_tbf.vcc
-else
-  vmodtool = $(VARNISHSRC)/lib/libvmod_std/vmod.py
-  vmodtoolargs =
-  vccfile = vmod_tbf.vcc3
+vmodtool = $(VARNISHSRC)/lib/libvcc/vmodtool.py
+vmodtoolargs = --strict
+vccfile = $(top_srcdir)/src/vmod_tbf.vcc
 
-vmod_tbf.vcc3: $(top_srcdir)/src/vmod_tbf.vcc
-  CLEANFILES += vmod_tbf.vcc3
-endif
-
-.vcc.vcc3:
-        sed -n '/^\$$/{s///;s/\(Module  *[^ ][^ ]*\).*/\1/;p}' $< > $@
 vcc_if.c vcc_if.h: $(vmodtool) $(vccfile)
         @PYTHON@ $(vmodtool) $(vmodtoolargs) $(vccfile)
 
diff --git a/src/tbf.h b/src/tbf.h
index 69e1262..7ee9f7e 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -1,5 +1,5 @@
 /* This file is part of vmod-tbf
-   Copyright (C) 2013-2014 Sergey Poznyakoff
+   Copyright (C) 2013-2016 Sergey Poznyakoff
   
    Vmod-tbf is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -25,17 +25,7 @@
 #include "vrt.h"
 #include "vcc_if.h"
 #include "pthread.h"
-#if VARNISHVERSION == 3
-# include "bin/varnishd/cache.h"
-# define VCL_VOID void
-# define VCL_INT int
-# define VCL_REAL double
-# define VCL_BOOL unsigned
-# define VCL_STRING const char *
-# define MOD_CTX struct sess *
-# define WSPTR(s) ((s)->wrk->ws)
-#else
-# include "bin/varnishd/cache/cache.h"
-# define MOD_CTX const struct vrt_ctx *
-# define WSPTR(s) ((s)->ws)
-#endif
+
+#include "bin/varnishd/cache/cache.h"
+#define MOD_CTX const struct vrt_ctx *
+#define WSPTR(s) ((s)->ws)
diff --git a/src/vmod-tbf.3 b/src/vmod-tbf.3
index 03d7daf..0b5a99d 100644
--- a/src/vmod-tbf.3
+++ b/src/vmod-tbf.3
@@ -206,7 +206,7 @@ of time.
 .\" for man-based doc pages.
 .if "\V[MANCGI]"WEBDOC" \{\
 .       ds package vmod-tbf
-.       ds version 1.0
+.       ds version 2.0
 .       so download.inc
 \}
 .SH "SEE ALSO"
diff --git a/tests/Makefile.am b/tests/Makefile.am
index c252b02..3c80a55 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -14,29 +14,14 @@
 # You should have received a copy of the GNU General Public License
 # along with vmod-tbf.  If not, see <http://www.gnu.org/licenses/>.
 
-VMOD_VTC = \
- test01.vtc\
- test03.vtc\
- time00.vtc
-
-VMOD_VTI = \
- test00.vti\
- test02.vti
-
-BUILT_TESTS = $(VMOD_VTI:.vti=.vtc)
-
 VMOD_TESTS = \
- test00.vti\
+ test00.vtc\
  test01.vtc\
- test02.vti\
+ test02.vtc\
  test03.vtc\
  time00.vtc
 
-.vti.vtc:
-        sed 's/^#VARNISH$(VARNISHVERSION)#//' $< > $@
-
-EXTRA_DIST=$(VMOD_VTC) $(VMOD_VTI)
-CLEANFILES=$(BUILT_TESTS)
+EXTRA_DIST=$(VMOD_TESTS)
 
 distclean-local:
         rm -fr tbf
diff --git a/tests/test00.vti b/tests/test00.vtc
index 53b9049..54c0281 100644
--- a/tests/test00.vti
+++ b/tests/test00.vtc
@@ -1,5 +1,5 @@
 # This file is part of vmod-tbf
-# Copyright (C) 2013-2014 Sergey Poznyakoff
+# Copyright (C) 2013-2016 Sergey Poznyakoff
 #
 # Vmod-tbf is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -31,11 +31,9 @@ varnish v1 -vcl+backend {
         }
         sub vcl_recv {
                 if (!tbf.rate("url:"+req.url, 1, 20 s, 5)) {
-#VARNISH3#              error 420 "Overlimit";
-#VARNISH4#              return (synth(420, "Overlimit"));
+                        return (synth(420, "Overlimit"));
                 }
-#VARNISH3#      return (lookup);
-#VARNISH4#      return (hash);
+                return (hash);
         }
 } -start
 
diff --git a/tests/test02.vti b/tests/test02.vtc
index ef58fb8..8ff3c51 100644
--- a/tests/test02.vti
+++ b/tests/test02.vtc
@@ -1,5 +1,5 @@
 # This file is part of vmod-tbf
-# Copyright (C) 2013-2014 Sergey Poznyakoff
+# Copyright (C) 2013-2016<