From af2339434d35ee2a40eb99af84e8571dc59dfc62 Mon Sep 17 00:00:00 2001
From: Jake Mannens <jakem_5@hotmail.com>
Date: Wed, 23 Oct 2019 21:25:26 +1100
Subject: Initial commit

---
 server/Makefile |  23 +++++++++++++
 server/main.c   | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+)
 create mode 100644 server/Makefile
 create mode 100644 server/main.c

(limited to 'server')

diff --git a/server/Makefile b/server/Makefile
new file mode 100644
index 0000000..f2b6ca3
--- /dev/null
+++ b/server/Makefile
@@ -0,0 +1,23 @@
+TARGET = $(shell basename $(CURDIR))
+
+SRCS = $(wildcard *.c)
+OBJS = $(SRCS:.c=.o)
+
+CC = gcc
+
+all: build
+
+build: $(TARGET)
+
+clean:
+	rm -f $(OBJS)
+	rm -f $(TARGET)
+
+run: $(TARGET)
+	$(realpath $(TARGET))
+
+$(TARGET): $(OBJS)
+	$(CC) -o $(TARGET) $(OBJS)
+
+.c.o:
+	$(CC) -c -o $*.o $^
diff --git a/server/main.c b/server/main.c
new file mode 100644
index 0000000..e37c33e
--- /dev/null
+++ b/server/main.c
@@ -0,0 +1,103 @@
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#define PORT 2319
+
+static int ifd;
+
+static void log_data(char *name, char *value) {
+  char buf[512];
+  struct sockaddr_in addr;
+  struct timeval tv;
+
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(8089);
+  inet_aton("10.51.0.15", &addr.sin_addr);
+
+  gettimeofday(&tv, NULL);
+
+  snprintf(buf, sizeof(buf), "%s %s %ld\n", name, value, (tv.tv_sec * 1000000000) + (tv.tv_usec * 1000));
+  printf(buf);
+
+  sendto(ifd, buf, strlen(buf), 0, (struct sockaddr*) &addr, sizeof(addr));
+}
+
+int main(int argc, char **argv) {
+  int ret;
+  char c = 'L', last = 'L';
+  ssize_t in;
+
+  int fd;
+  int sfd;
+
+  int be = 1;
+  char buf[256];
+
+  struct sockaddr_in addr;
+
+  if(argc < 2) {
+    printf("Usage: %s <serial port>\n", argv[0]);
+    exit(EXIT_FAILURE);
+  }
+
+  fd = open(argv[1], O_RDONLY);
+  if(fd < 0) {
+    perror("Failed to open serial port");
+    exit(EXIT_FAILURE);
+  }
+
+  sfd = socket(AF_INET, SOCK_DGRAM, 0);
+  if(sfd < 0) {
+    perror("Failed to open socket");
+    exit(EXIT_FAILURE);
+  }
+
+  setsockopt(sfd, SOL_SOCKET, SO_BROADCAST, &be, sizeof(be));
+  if(ret < 0) {
+    perror("Failed to enable broadcasts on socket");
+    exit(EXIT_FAILURE);
+  }
+
+  ifd = socket(AF_INET, SOCK_DGRAM, 0);
+  if(sfd < 0) {
+    perror("Failed to open InfluxDB socket");
+    exit(EXIT_FAILURE);
+  }
+
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(PORT);
+  addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
+
+  for(;;) {
+    in = read(fd, &c, 1);
+    if(in < 0) {
+      perror("Failed to read from serial port");
+      exit(EXIT_FAILURE);
+    }
+
+    if(c != 'H' && c != 'L')
+      continue;
+
+    snprintf(buf, sizeof(buf), "%c->%c", last, c);
+    puts(buf);
+    sendto(sfd, buf, strlen(buf), 0, (struct sockaddr*) &addr, sizeof(addr));
+
+    if(c != last) {
+      if(last == 'L' && c == 'H')
+        log_data("bedroom_door", "open=true");
+
+      if(last == 'H' && c == 'L')
+        log_data("bedroom_door", "open=false");
+    }
+
+    last = c;
+  }
+
+  return 0;
+}
-- 
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