Provide links to C file and diff for download.

fuzzing-ping.org

@@ -45,7 +45,7 @@ I installed =afl++= from packages and glanced at
 + Compile the program with =afl-clang-fast=.
 + Run =afl-fuzz=.
 
-=test.c:=
+[[file:fuzzing-ping/test.c][=test.c=]]:
 #+begin_src C
   /* Written by Florian Obser, Public Domain */
   #include <err.h>
@@ -98,7 +98,7 @@ Here is a file where the length byte and file size agree.  Create
 folders =in= and =out= and place =test.txt= into =in/test.txt=. Don't
 forget the newline.
 
-=test.txt=:
+[[file:fuzzing-ping/test.txt][=test.txt=]]:
 #+begin_example
 ABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
 #+end_example
@@ -132,6 +132,8 @@ parsing is handled by =pr_pack()=, so that's what we should fuzz.
 We need some sample data. An ICMP package is binary data
 on-wire. Crafting it by hand is annoying. So let's just hack =ping(8)=
 to dump the packet to disk.
+
+[[file:fuzzing-ping/ping_output_hack.diff][=ping_output_hack.diff=]]:
 #+begin_src diff
 diff --git sbin/ping/ping.c sbin/ping/ping.c
 index a3b3d650eb5..78b571b95b4 100644