From 43a5bab9a5cf3247c4c8c11e395ee5159857beac Mon Sep 17 00:00:00 2001
From: pacien <pacien.trangirard@pacien.net>
Date: Thu, 22 Aug 2019 17:50:13 +0200
Subject: [PATCH 1/2] libspf2: init at 1.2.10

---
 .../development/libraries/libspf2/default.nix | 43 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  2 +
 2 files changed, 45 insertions(+)
 create mode 100644 pkgs/development/libraries/libspf2/default.nix

diff --git a/pkgs/development/libraries/libspf2/default.nix b/pkgs/development/libraries/libspf2/default.nix
new file mode 100644
index 000000000000..d4b112704284
--- /dev/null
+++ b/pkgs/development/libraries/libspf2/default.nix
@@ -0,0 +1,43 @@
+{ stdenv, fetchurl, autoreconfHook }:
+
+with stdenv.lib;
+
+stdenv.mkDerivation rec {
+  pname = "libspf2";
+  version = "1.2.10";
+
+  src = fetchurl {
+    url = "https://www.libspf2.org/spf/libspf2-${version}.tar.gz";
+    sha256 = "1j91p0qiipzf89qxq4m1wqhdf01hpn1h5xj4djbs51z23bl3s7nr";
+  };
+
+  patches = [
+    (fetchurl {
+      name = "0001-gcc-variadic-macros.patch";
+      url = "https://github.com/shevek/libspf2/commit/5852828582f556e73751076ad092f72acf7fc8b6.patch";
+      sha256 = "1v6ashqzpr0xidxq0vpkjd8wd66cj8df01kyzj678ljzcrax35hk";
+    })
+  ];
+
+  postPatch = ''
+    # disable static bins compilation
+    sed -i \
+      -e '/bin_PROGRAMS/s/spfquery_static//' src/spfquery/Makefile.am \
+      -e '/bin_PROGRAMS/s/spftest_static//' src/spftest/Makefile.am \
+      -e '/bin_PROGRAMS/s/spfd_static//' src/spfd/Makefile.am \
+      -e '/bin_PROGRAMS/s/spf_example_static//' src/spf_example/Makefile.am
+  '';
+
+  # autoreconf necessary because we modified automake files
+  nativeBuildInputs = [ autoreconfHook ];
+
+  doCheck = true;
+
+  meta = {
+    description = "Implementation of the Sender Policy Framework for SMTP authorization";
+    homepage = https://www.libspf2.org;
+    license = with licenses; [ lgpl21Plus bsd2 ];
+    maintainers = with maintainers; [ pacien ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8b1fd5c8792c..a9a69a18757b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4498,6 +4498,8 @@ in
 
   libsidplayfp = callPackage ../development/libraries/libsidplayfp { };
 
+  libspf2 = callPackage ../development/libraries/libspf2 { };
+
   libsrs2 = callPackage ../development/libraries/libsrs2 { };
 
   libtermkey = callPackage ../development/libraries/libtermkey { };

From f1ef419be34a773677b7408bb7b5db02c2d93699 Mon Sep 17 00:00:00 2001
From: pacien <pacien.trangirard@pacien.net>
Date: Thu, 22 Aug 2019 17:55:50 +0200
Subject: [PATCH 2/2] exim: add SPF support

---
 pkgs/servers/mail/exim/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/servers/mail/exim/default.nix b/pkgs/servers/mail/exim/default.nix
index a537a4c6d00c..25a94cd27bfa 100644
--- a/pkgs/servers/mail/exim/default.nix
+++ b/pkgs/servers/mail/exim/default.nix
@@ -3,6 +3,7 @@
 , enableMySQL ? false, mysql, zlib
 , enableAuthDovecot ? false, dovecot
 , enablePAM ? false, pam
+, enableSPF ? true, libspf2
 }:
 
 stdenv.mkDerivation rec {
@@ -18,7 +19,8 @@ stdenv.mkDerivation rec {
     ++ stdenv.lib.optional enableLDAP openldap
     ++ stdenv.lib.optionals enableMySQL [ mysql.connector-c zlib ]
     ++ stdenv.lib.optional enableAuthDovecot dovecot
-    ++ stdenv.lib.optional enablePAM pam;
+    ++ stdenv.lib.optional enablePAM pam
+    ++ stdenv.lib.optional enableSPF libspf2;
 
   preBuild = ''
     sed '
@@ -64,6 +66,10 @@ stdenv.mkDerivation rec {
         s:^\(EXTRALIBS_EXIM\)=\(.*\):\1=\2 -lpam:
         s:^# \(EXTRALIBS_EXIM\)=.*:\1=-lpam:
       ''}
+      ${stdenv.lib.optionalString enableSPF ''
+        s:^# \(SUPPORT_SPF\)=.*:\1=yes:
+        s:^# \(LDFLAGS += -lspf2\):\1:
+      ''}
       #/^\s*#.*/d
       #/^\s*$/d
     ' < src/EDITME > Local/Makefile