From 30ae6586b2c1b415267ab32ffc9c260e1f0c74c2 Mon Sep 17 00:00:00 2001
From: Jordan Bancino <jordan@bancino.net>
Date: Fri, 12 Aug 2022 19:32:06 -0400
Subject: [PATCH] Accept #28, with modifications.

---
 src/Telodendria.c      |  2 ++
 src/include/NonPosix.h | 59 ++++++++++++++++++++++++++++++++++++++++++
 tools/bin/td           |  2 +-
 3 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 src/include/NonPosix.h

diff --git a/src/Telodendria.c b/src/Telodendria.c
index 16be3fc..efa54c8 100644
--- a/src/Telodendria.c
+++ b/src/Telodendria.c
@@ -37,6 +37,8 @@
 #include <Config.h>
 #include <HttpServer.h>
 
+#include <NonPosix.h>
+
 HttpServer *httpServer = NULL;
 
 static void
diff --git a/src/include/NonPosix.h b/src/include/NonPosix.h
new file mode 100644
index 0000000..29efd27
--- /dev/null
+++ b/src/include/NonPosix.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022 Jordan Bancino <@jordan:bancino.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*
+ * NonPosix.h: A collection of functions that I know certain operating
+ * systems have, but they aren't specified in POSIX. I'd like to keep
+ * this header really small if at all possible.
+ */
+#ifndef TELODENDRIA_NONPOSIX_H
+#define TELODENDRIA_NONPOSIX_H
+
+/*
+ * Pretty much all Unix-like systems have a chroot() function. In fact,
+ * chroot() used to be POSIX, so any operating system claiming to be
+ * POSIX-like had to have a chroot(). But unfortunately chroot() is not
+ * in the standard anymore. Luckily, I don't know of a single operating
+ * system to get rid of chroot(). So we should be able to safely depend
+ * on a chroot() syscall being available.
+ */
+extern int chroot(const char *);
+
+/*
+ * Telodendria is primarily developed on OpenBSD; as such, you can
+ * expect that it will use some OpenBSD-specific features if OpenBSD
+ * is the target platform.
+ *
+ * It is my goal though, to make these functions entirely optional.
+ * I've wrapped them in a preprocessor guard, and anywhere they're used
+ * should also be wrapped in the same guard. So if the target platform
+ * is not OpenBSD, then these aren't used at all.
+ */
+#ifdef __OpenBSD__
+extern int pledge(const char *, const char *);
+extern int unveil(const char *, const char *);
+
+#endif
+
+#endif
diff --git a/tools/bin/td b/tools/bin/td
index a7f3df3..ec4d233 100644
--- a/tools/bin/td
+++ b/tools/bin/td
@@ -22,7 +22,7 @@
 : "${TELODENDRIA_VERSION:=0.0.0}"
 : "${CVS_TAG:=Telodendria-$(echo $TELODENDRIA_VERSION | sed 's/\./_/g')}"
 
-: "${DEFINES:=-D_BSD_SOURCE -D_POSIX_C_SOURCE=199506L -DTELODENDRIA_VERSION=\"$TELODENDRIA_VERSION\"}"
+: "${DEFINES:=-D_POSIX_C_SOURCE=200809L -DTELODENDRIA_VERSION=\"$TELODENDRIA_VERSION\"}"
 : "${INCLUDES:=-Isrc/include}"
 
 : "${CC:=cc}"