From 51560013d0ab4c823c3d1b28a0d0485cc84b2e40 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@ucc.gu.uwa.edu.au>
Date: Tue, 23 Nov 2010 11:30:49 +0800
Subject: [PATCH] Snack machine handlers

---
 items.cfg                  |  4 ++
 src/server/Makefile        |  2 +-
 src/server/handler_snack.c | 75 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 src/server/handler_snack.c

diff --git a/items.cfg b/items.cfg
index b101b7e..21e09ef 100644
--- a/items.cfg
+++ b/items.cfg
@@ -13,3 +13,7 @@ coke	6	96	Coke
 # Pseudo items
 pseudo	0	128	clue	# clue.flac
 pseudo	1	10	laserprint	# print 10 pages
+
+# Snack machine
+snack	13	128	Smiths Salt & Vinegar
+snack	33	128	Smiths Original
diff --git a/src/server/Makefile b/src/server/Makefile
index 34e55f6..10e64eb 100644
--- a/src/server/Makefile
+++ b/src/server/Makefile
@@ -3,7 +3,7 @@
 
 OBJ := main.o server.o logging.o
 OBJ += dispense.o itemdb.o
-OBJ += handler_coke.o
+OBJ += handler_coke.o handler_snack.o
 BIN := ../../dispsrv
 
 LINKFLAGS := -g ../../cokebank.so
diff --git a/src/server/handler_snack.c b/src/server/handler_snack.c
new file mode 100644
index 0000000..826851e
--- /dev/null
+++ b/src/server/handler_snack.c
@@ -0,0 +1,75 @@
+/*
+ * OpenDispense 2 
+ * UCC (University [of WA] Computer Club) Electronic Accounting System
+ * - Dispense Server
+ *
+ * handler_snack.c - Snack machine code
+ *
+ * This file is licenced under the 3-clause BSD Licence. See the file
+ * COPYING for full details.
+ */
+#include "common.h"
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <regex.h>
+
+// === IMPORTS ===
+
+// === PROTOTYPES ===
+ int	Snack_InitHandler();
+ int	Snack_CanDispense(int User, int Item);
+ int	Snack_DoDispense(int User, int Item);
+
+// === GLOBALS ===
+tHandler	gSnack_Handler = {
+	"snack",
+	Snack_InitHandler,
+	Snack_CanDispense,
+	Snack_DoDispense
+};
+char	*gsSnack_SerialPort = "/dev/ttyS1";
+ int	giSnack_SerialFD;
+regex_t	gSnack_ResponseRegex;
+
+// == CODE ===
+int Snack_InitHandler()
+{
+	giSnack_SerialFD = open(gsSnack_SerialPort, O_RDWR);
+	regcomp(&gSnack_ResponseRegex, "^(\\d\\d\\d)(.*)$", REG_EXTENDED);
+	return 0;
+}
+
+int Snack_CanDispense(int User, int Item)
+{
+	// Sanity please
+	if( Item < 0 || Item > 99 )	return -1;
+	
+	return 1;
+}
+
+/**
+ * \brief Actually do a dispense from the coke machine
+ */
+int Snack_DoDispense(int User, int Item)
+{
+	char	tmp[32];
+	regmatch_t	matches[4];
+
+	// Sanity please
+	if( Item < 0 || Item > 99 )	return -1;
+
+	// Dispense
+	sprintf(tmp, "V%02i\n", Item);
+	write(giSnack_SerialFD, tmp, 2);
+
+	// Get status
+	read(giSnack_SerialFD, tmp, sizeof(tmp)-1);
+	regexec(&gSnack_ResponseRegex, tmp, sizeof(matches)/sizeof(matches[0]), matches, 0);
+
+	return 0;
+}
+
+
-- 
2.20.1