From 4e14224a95f234ca8f7c232e1efa1a51a1eb00bd Mon Sep 17 00:00:00 2001
From: dtb <git@trinity.moe>
Date: Tue, 27 Jun 2023 08:58:25 -0400
Subject: [PATCH] tentative implementation of liminality

---
 liminality/Makefile     |  2 ++
 liminality/libinality.h |  6 ++++++
 liminality/liminal      |  7 +++++++
 liminality/liminality.c | 32 ++++++++++++++++++++++++++++++++
 4 files changed, 47 insertions(+)
 create mode 100644 liminality/Makefile
 create mode 100644 liminality/libinality.h
 create mode 100755 liminality/liminal
 create mode 100644 liminality/liminality.c

diff --git a/liminality/Makefile b/liminality/Makefile
new file mode 100644
index 0000000..ac72864
--- /dev/null
+++ b/liminality/Makefile
@@ -0,0 +1,2 @@
+liminality: libinality.h liminality.c
+	$(CC) -g -o liminality liminality.c
diff --git a/liminality/libinality.h b/liminality/libinality.h
new file mode 100644
index 0000000..bae344b
--- /dev/null
+++ b/liminality/libinality.h
@@ -0,0 +1,6 @@
+#ifndef _LIMINALITY_H
+#	define _LIMINALITY_H
+static char *Liminality_prefix = "FROM ";
+static char *Liminality_infix = "\nBODY ";
+static char *Liminality_suffix = "\n";
+#endif /* ifndef _LIMINALITY_H */
diff --git a/liminality/liminal b/liminality/liminal
new file mode 100755
index 0000000..eca85dc
--- /dev/null
+++ b/liminality/liminal
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+test -z "$2" || test -n "$3" \
+	&& printf "Usage: %s [server] [port]\n" "$0" >&2 \
+	&& exit 64 # sysexits(3) EX_USAGE
+
+liminality | nc "$1" "$2"
diff --git a/liminality/liminality.c b/liminality/liminality.c
new file mode 100644
index 0000000..90153ab
--- /dev/null
+++ b/liminality/liminality.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "libinality.h"
+
+char *signoff = "";
+char *user = "user";
+
+int main(int argc, char *argv[]){
+	int c;
+	char exiting;
+	char *s;
+
+	if((s = getenv("USER")) != NULL)
+		user = s;
+
+	do{
+		fputs(Liminality_prefix, stdout);
+		fputs(user, stdout);
+		fputs(Liminality_infix, stdout);
+		while((c = getc(stdin)) != '\n')
+			if(c != EOF)
+				putc(c, stdout);
+			else{
+				exiting = 1;
+				fputs(signoff, stdout);
+				break;
+			}
+		fputs(Liminality_suffix, stdout);
+	}while(!exiting);
+
+	return 0;
+}