[PATCH] Replace HTTP links with HTTPS ones: BPF (Safe dynamic programs and tools)

["Alexander A. Klimov" <grandmaster@al2klimov.de>]

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
          If both the HTTP and HTTPS versions
          return 200 OK and serve the same content:
            Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
---
 Continuing my work started at 93431e0607e5.

 If there are any URLs to be removed completely or at least not HTTPSified:
 Just clearly say so and I'll *undo my change*.
 See also https://lkml.org/lkml/2020/6/27/64

 If there are any valid, but yet not changed URLs:
 See https://lkml.org/lkml/2020/6/26/837

 Documentation/bpf/bpf_devel_QA.rst          | 4 ++--
 Documentation/bpf/index.rst                 | 2 +-
 Documentation/networking/af_xdp.rst         | 2 +-
 Documentation/networking/filter.rst         | 2 +-
 arch/x86/net/bpf_jit_comp.c                 | 2 +-
 include/linux/bpf.h                         | 2 +-
 include/linux/bpf_verifier.h                | 2 +-
 include/uapi/linux/bpf.h                    | 2 +-
 kernel/bpf/arraymap.c                       | 2 +-
 kernel/bpf/core.c                           | 2 +-
 kernel/bpf/disasm.c                         | 2 +-
 kernel/bpf/disasm.h                         | 2 +-
 kernel/bpf/hashtab.c                        | 2 +-
 kernel/bpf/helpers.c                        | 2 +-
 kernel/bpf/syscall.c                        | 2 +-
 kernel/bpf/verifier.c                       | 2 +-
 kernel/trace/bpf_trace.c                    | 2 +-
 lib/test_bpf.c                              | 2 +-
 net/core/filter.c                           | 2 +-
 samples/bpf/lathist_kern.c                  | 2 +-
 samples/bpf/lathist_user.c                  | 2 +-
 samples/bpf/sockex3_kern.c                  | 2 +-
 samples/bpf/tracex1_kern.c                  | 2 +-
 samples/bpf/tracex2_kern.c                  | 2 +-
 samples/bpf/tracex3_kern.c                  | 2 +-
 samples/bpf/tracex3_user.c                  | 2 +-
 samples/bpf/tracex4_kern.c                  | 2 +-
 samples/bpf/tracex4_user.c                  | 2 +-
 samples/bpf/tracex5_kern.c                  | 2 +-
 tools/include/uapi/linux/bpf.h              | 2 +-
 tools/lib/bpf/bpf.c                         | 2 +-
 tools/lib/bpf/bpf.h                         | 2 +-
 tools/testing/selftests/bpf/test_maps.c     | 2 +-
 tools/testing/selftests/bpf/test_verifier.c | 2 +-
 34 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/Documentation/bpf/bpf_devel_QA.rst b/Documentation/bpf/bpf_devel_QA.rst
index 0b3db91dc100..fffb832d27d6 100644
--- a/Documentation/bpf/bpf_devel_QA.rst
+++ b/Documentation/bpf/bpf_devel_QA.rst
@@ -478,7 +478,7 @@ LLVM's static compiler lists the supported targets through
 ``llc --version``, make sure BPF targets are listed. Example::
 
      $ llc --version
-     LLVM (http://llvm.org/):
+     LLVM (https://llvm.org/):
        LLVM version 6.0.0svn
        Optimized build.
        Default target: x86_64-unknown-linux-gnu
@@ -496,7 +496,7 @@ BPF back end, it is advisable to run the latest LLVM releases. Support
 for new BPF kernel features such as additions to the BPF instruction
 set are often developed together.
 
-All LLVM releases can be found at: http://releases.llvm.org/
+All LLVM releases can be found at: https://releases.llvm.org/
 
 Q: Got it, so how do I build LLVM manually anyway?
 --------------------------------------------------
diff --git a/Documentation/bpf/index.rst b/Documentation/bpf/index.rst
index 38b4db8be7a2..576ccfe5d560 100644
--- a/Documentation/bpf/index.rst
+++ b/Documentation/bpf/index.rst
@@ -62,4 +62,4 @@ Testing and debugging BPF
 .. _Documentation/networking/filter.rst: ../networking/filter.txt
 .. _man-pages: https://www.kernel.org/doc/man-pages/
 .. _bpf(2): http://man7.org/linux/man-pages/man2/bpf.2.html
-.. _BPF and XDP Reference Guide: http://cilium.readthedocs.io/en/latest/bpf/
+.. _BPF and XDP Reference Guide: https://cilium.readthedocs.io/en/latest/bpf/
diff --git a/Documentation/networking/af_xdp.rst b/Documentation/networking/af_xdp.rst
index 5bc55a4e3bce..8c0e27e151f0 100644
--- a/Documentation/networking/af_xdp.rst
+++ b/Documentation/networking/af_xdp.rst
@@ -12,7 +12,7 @@ packet processing.
 
 This document assumes that the reader is familiar with BPF and XDP. If
 not, the Cilium project has an excellent reference guide at
-http://cilium.readthedocs.io/en/latest/bpf/.
+https://cilium.readthedocs.io/en/latest/bpf/.
 
 Using the XDP_REDIRECT action from an XDP program, the program can
 redirect ingress frames to other XDP enabled netdevs, using the
diff --git a/Documentation/networking/filter.rst b/Documentation/networking/filter.rst
index a1d3e192b9fa..c203a2d58a6f 100644
--- a/Documentation/networking/filter.rst
+++ b/Documentation/networking/filter.rst
@@ -56,7 +56,7 @@ Steven McCanne and Van Jacobson. 1993. The BSD packet filter: a new
 architecture for user-level packet capture. In Proceedings of the
 USENIX Winter 1993 Conference Proceedings on USENIX Winter 1993
 Conference Proceedings (USENIX'93). USENIX Association, Berkeley,
-CA, USA, 2-2. [http://www.tcpdump.org/papers/bpf-usenix93.pdf]
+CA, USA, 2-2. [https://www.tcpdump.org/papers/bpf-usenix93.pdf]
 
 Structure
 ---------
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 42b6709e6dc7..41bd7725f503 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -3,7 +3,7 @@
  * bpf_jit_comp.c: BPF JIT compiler
  *
  * Copyright (C) 2011-2013 Eric Dumazet (eric.dumazet@gmail.com)
- * Internal BPF Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+ * Internal BPF Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 #include <linux/netdevice.h>
 #include <linux/filter.h>
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 07052d44bca1..94b9ee4495ed 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 #ifndef _LINUX_BPF_H
 #define _LINUX_BPF_H 1
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index ca08db4ffb5f..52e2aeedc3de 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 #ifndef _LINUX_BPF_VERIFIER_H
 #define _LINUX_BPF_VERIFIER_H 1
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 974a71342aea..40af03e740aa 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 11584618e861..43781c13f303 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016,2017 Facebook
  */
 #include <linux/bpf.h>
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 9df4cc9a2907..10698be9d633 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -5,7 +5,7 @@
  * Based on the design of the Berkeley Packet Filter. The new
  * internal format has been designed by PLUMgrid:
  *
- *	Copyright (c) 2011 - 2014 PLUMgrid, http://plumgrid.com
+ *	Copyright (c) 2011 - 2014 PLUMgrid, https://plumgrid.com
  *
  * Authors:
  *
diff --git a/kernel/bpf/disasm.c b/kernel/bpf/disasm.c
index b44d8c447afd..6953c6a3b6fe 100644
--- a/kernel/bpf/disasm.c
+++ b/kernel/bpf/disasm.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  */
 
diff --git a/kernel/bpf/disasm.h b/kernel/bpf/disasm.h
index e546b18d27da..cbac62e32f62 100644
--- a/kernel/bpf/disasm.h
+++ b/kernel/bpf/disasm.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  */
 
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index b4b288a3c3c9..eeaa94cffa44 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  */
 #include <linux/bpf.h>
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index be43ab3e619f..ce20177f4801 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 #include <linux/bpf.h>
 #include <linux/rcupdate.h>
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 8da159936bab..922d899940fc 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 #include <linux/bpf.h>
 #include <linux/bpf_trace.h>
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 34cde841ab68..987e0a91b123 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  * Copyright (c) 2018 Covalent IO, Inc. http://covalent.io
  */
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 7bc3d6175868..26dd5f2fea9f 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright (c) 2011-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2015 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  */
 #include <linux/kernel.h>
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index a5fddf9ebcb7..17eb6fb13c90 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -2,7 +2,7 @@
 /*
  * Testsuite for BPF interpreter and BPF JIT compiler
  *
- * Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+ * Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/net/core/filter.c b/net/core/filter.c
index 73395384afe2..211612018b75 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -5,7 +5,7 @@
  * Based on the design of the Berkeley Packet Filter. The new
  * internal format has been designed by PLUMgrid:
  *
- *	Copyright (c) 2011 - 2014 PLUMgrid, http://plumgrid.com
+ *	Copyright (c) 2011 - 2014 PLUMgrid, https://plumgrid.com
  *
  * Authors:
  *
diff --git a/samples/bpf/lathist_kern.c b/samples/bpf/lathist_kern.c
index ca9c2e4e69aa..56dbce51b47f 100644
--- a/samples/bpf/lathist_kern.c
+++ b/samples/bpf/lathist_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2015 BMW Car IT GmbH
  *
  * This program is free software; you can redistribute it and/or
diff --git a/samples/bpf/lathist_user.c b/samples/bpf/lathist_user.c
index 2ff2839a52d5..500cec2f81c2 100644
--- a/samples/bpf/lathist_user.c
+++ b/samples/bpf/lathist_user.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2015 BMW Car IT GmbH
  */
 #include <stdio.h>
diff --git a/samples/bpf/sockex3_kern.c b/samples/bpf/sockex3_kern.c
index cab9cca0b8eb..6908f30617f5 100644
--- a/samples/bpf/sockex3_kern.c
+++ b/samples/bpf/sockex3_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/samples/bpf/tracex1_kern.c b/samples/bpf/tracex1_kern.c
index 8e2610e14475..28f86724ff2e 100644
--- a/samples/bpf/tracex1_kern.c
+++ b/samples/bpf/tracex1_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/samples/bpf/tracex2_kern.c b/samples/bpf/tracex2_kern.c
index 5bc696bac27d..9f764ead80a3 100644
--- a/samples/bpf/tracex2_kern.c
+++ b/samples/bpf/tracex2_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/samples/bpf/tracex3_kern.c b/samples/bpf/tracex3_kern.c
index 659613c19a82..19a6a2a8eb03 100644
--- a/samples/bpf/tracex3_kern.c
+++ b/samples/bpf/tracex3_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/samples/bpf/tracex3_user.c b/samples/bpf/tracex3_user.c
index 70e987775c15..873c959cc07d 100644
--- a/samples/bpf/tracex3_user.c
+++ b/samples/bpf/tracex3_user.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2013-2015 PLUMgrid, https://plumgrid.com
  */
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/samples/bpf/tracex4_kern.c b/samples/bpf/tracex4_kern.c
index eb0f8fdd14bf..0be7ed2ad74a 100644
--- a/samples/bpf/tracex4_kern.c
+++ b/samples/bpf/tracex4_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/samples/bpf/tracex4_user.c b/samples/bpf/tracex4_user.c
index e8faf8f184ae..e819692b23d7 100644
--- a/samples/bpf/tracex4_user.c
+++ b/samples/bpf/tracex4_user.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2015 PLUMgrid, https://plumgrid.com
  */
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/samples/bpf/tracex5_kern.c b/samples/bpf/tracex5_kern.c
index 32b49e8ab6bd..92fa02e2194d 100644
--- a/samples/bpf/tracex5_kern.c
+++ b/samples/bpf/tracex5_kern.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2015 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 974a71342aea..40af03e740aa 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
+/* Copyright (c) 2011-2014 PLUMgrid, https://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index a7329b671c41..bdd4a32c6f2a 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -18,7 +18,7 @@
  * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not,  see <http://www.gnu.org/licenses>
+ * License along with this program; if not,  see <https://www.gnu.org/licenses>
  */
 
 #include <stdlib.h>
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 1b6015b21ba8..da4c8b1f2bbf 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -18,7 +18,7 @@
  * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not,  see <http://www.gnu.org/licenses>
+ * License along with this program; if not,  see <https://www.gnu.org/licenses>
  */
 #ifndef __LIBBPF_BPF_H
 #define __LIBBPF_BPF_H
diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 6a12a0e01e07..694021bddba4 100644
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -2,7 +2,7 @@
 /*
  * Testsuite for eBPF maps
  *
- * Copyright (c) 2014 PLUMgrid, http://plumgrid.com
+ * Copyright (c) 2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2016 Facebook
  */
 
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index 78a6bae56ea6..18027c373763 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -2,7 +2,7 @@
 /*
  * Testsuite for eBPF verifier
  *
- * Copyright (c) 2014 PLUMgrid, http://plumgrid.com
+ * Copyright (c) 2014 PLUMgrid, https://plumgrid.com
  * Copyright (c) 2017 Facebook
  * Copyright (c) 2018 Covalent IO, Inc. http://covalent.io
  */
-- 
2.27.0