X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Fserver%2Fhandler_door.c;h=190769aa739f03ed764d7d9e32077a9ddca51b20;hb=0b5755205d388b5704c040c21285c0b7ab58825e;hp=69c5bcec9a9dab7d9140e62e42ab5066a22e1f4f;hpb=2263a6c4b7df73a8c5ac6968f0bb180ac5f7fb0e;p=tpg%2Fopendispense2.git

diff --git a/src/server/handler_door.c b/src/server/handler_door.c
index 69c5bce..190769a 100644
--- a/src/server/handler_door.c
+++ b/src/server/handler_door.c
@@ -2,7 +2,7 @@
  * OpenDispense 2 
  * UCC (University [of WA] Computer Club) Electronic Accounting System
  *
- * handler_doror.c - Door Relay code
+ * handler_door.c - Door Relay code
  *
  * This file is licenced under the 3-clause BSD Licence. See the file
  * COPYING for full details.
@@ -18,9 +18,9 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <unistd.h>
-#include <sys/wait.h>
+#include <pty.h>
 
-#define DOOR_UNLOCKED_DELAY	10	// 10 seconds before it re-locks
+#define DOOR_UNLOCKED_DELAY	5	// Time in seconds before the door re-locks
 
 // === IMPORTS ===
 
@@ -28,6 +28,8 @@
  int	Door_InitHandler();
  int	Door_CanDispense(int User, int Item);
  int	Door_DoDispense(int User, int Item);
+ int	writes(int fd, const char *str);
+char	*ReadStatus(int FD);
 
 // === GLOBALS ===
 tHandler	gDoor_Handler = {
@@ -36,20 +38,11 @@ tHandler	gDoor_Handler = {
 	Door_CanDispense,
 	Door_DoDispense
 };
-char	*gsDoor_Password = "";
-volatile int	giDoor_ChildStatus;
+char	*gsDoor_SerialPort;	// Set from config in main.c
 
 // == CODE ===
-void Door_SIGCHLDHandler(int signum)
-{
-	signum = 0;
-	giDoor_ChildStatus ++;
-	printf("SIGCHLD: giDoor_ChildStatus = %i \n", giDoor_ChildStatus);
-}
-
 int Door_InitHandler(void)
 {
-	signal(SIGCHLD, Door_SIGCHLDHandler);
 	return 0;
 }
 
@@ -83,11 +76,7 @@ int Door_CanDispense(int User, int Item)
  */
 int Door_DoDispense(int User, int Item)
 {
-	FILE	*child_stdin;
-	 int	stdin_pair[2];
-	 int	stdout_pair[2];
-	pid_t	childPid;
-	pid_t	parentPid;
+	 int	door_serial_handle;
 	
 	#if DEBUG
 	printf("Door_DoDispense: (User=%i,Item=%i)\n", User, Item);
@@ -105,110 +94,72 @@ int Door_DoDispense(int User, int Item)
 		return 1;
 	}
 	
-	// Create stdin/stdout
-	if( pipe(stdin_pair) || pipe(stdout_pair) )
-	{
-		perror("pipe");
+	door_serial_handle = InitSerial(gsDoor_SerialPort, 115200);
+	if(door_serial_handle < 0) {
+		fprintf(stderr, "Unable to open door serial '%s'\n", gsDoor_SerialPort);
+		perror("Opening door port");
 		return -1;
 	}
-	
-	giDoor_ChildStatus = 0;	// Set child status to zero
-	parentPid = getpid();
-	childPid = fork();
-	
-	if( childPid < 0 )
-	{
-		perror("fork");
-		return -1;
-	}
-	
-	// Child process
-	if( childPid == 0 )
-	{
-		// Close write end of stdin, and set it to #0
-		close(stdin_pair[1]);	dup2(stdin_pair[0], 0);
-		// Close read end of stdout, and set it to #1
-		close(stdout_pair[0]);	dup2(stdout_pair[1], 1);
-		
-		//execl("/bin/sh", "sh", "-c", "llogin door -w-", NULL);
-		execl("/usr/bin/llogin", "llogin", "door", "-w-", NULL);
-		perror("execl");
-		exit(-1);
-	}
-	
-	child_stdin = fdopen(stdin_pair[1], "w");
-	close(stdin_pair[0]);	// child stdin read
-	close(stdout_pair[1]);	// child stdout write
-	
+
+	// Disable local echo
 	{
-		char	buf[1024];
-		 int	len;
-		if( giDoor_ChildStatus || (len = read(stdout_pair[0], buf, sizeof buf)) < 0)
-		{
-			#if DEBUG
-			int child_exit;
-			waitpid(childPid, &child_exit, 0);
-			printf("Door_DoDispense: fread fail (child status %i)\n", child_exit);
-			#endif
-			return -1;
-		}
-		buf[len] = '\0';
-		
-		#if DEBUG
-		printf("Door_DoDispense: buf = %i '%s'\n", len, buf);
-		#endif
-	}
-	
-	// Send password
-	if( giDoor_ChildStatus || fputs(gsDoor_Password, child_stdin) <= 0 ) {
-		#if DEBUG
-		int child_exit;
-		waitpid(childPid, &child_exit, 0);
-		printf("Door_DoDispense: fputs password fail (child status %i)\n", child_exit);
-		#endif
-		return -1;
-	}
-	fputs("\n", child_stdin);
-	
-	
-	#if DEBUG
-	printf("Door_DoDispense: Door unlock\n");
-	#endif
-	
-	// ATH1 - Unlock door
-	if( giDoor_ChildStatus || fputs("ATH1\n", child_stdin) <= 0) {
-		#if DEBUG
-		printf("Door_DoDispense: fputs unlock\n");
-		#endif
-		return -1;
+		struct termios	info;
+		tcgetattr(door_serial_handle, &info);
+		info.c_cflag &= ~CLOCAL;
+		tcsetattr(door_serial_handle, TCSANOW, &info);
 	}
-	
-	// Wait before re-locking
-	sleep(DOOR_UNLOCKED_DELAY);
 
+//	flush(door_serial_handle);
 
-	#if DEBUG
-	printf("Door_DoDispense: Door re-lock\n");
-	#endif
+	writes(door_serial_handle, "4;");
 
-	// Re-lock the door (and quit llogin)
-	if( giDoor_ChildStatus || fputs("ATH0\n\x1D", child_stdin) == 0 ) {
-		#if DEBUG
-		printf("Door_DoDispense: fputs lock\n");
-		#endif
+#if 0
+	char *status = ReadStatus(door_serial_handle);
+	if( !status )	return -1;
+	if( strcmp(status, "Opening door") != 0 ) {
+		fprintf(stderr, "Unknown/unexpected door status '%s'\n", status);
 		return -1;
 	}
-	
-	fclose(child_stdin);
-	close(stdin_pair[1]);	// child stdin write
-	close(stdout_pair[0]);	// child stdout read
+#endif
+
+	close(door_serial_handle);
 	
 	#if DEBUG
 	printf("Door_DoDispense: User %i opened door\n", User);
 	#endif
 
-	kill(childPid, SIGKILL);
+	return 0;
+}
 
+int writes(int fd, const char *str)
+{
+	 int	len = strlen(str);
+	
+	if( len != write(fd, str, len) )
+	{
+		return 1;
+	}
 	return 0;
 }
 
+char *ReadStatus(int FD)
+{
+	char	tmpbuf[32];
+	 int	len;
+	len = read(FD, tmpbuf, sizeof(tmpbuf)-1);
+	tmpbuf[len] = 0;
+	char *msg = strchr(tmpbuf, ',');
+	if( !msg ) {
+		fprintf(stderr, "Door returned malformed data (no ',')\n");
+		return NULL;
+	}
+	msg ++;
+	char *end = strchr(tmpbuf, ';');
+	if( !end ) {
+		fprintf(stderr, "Door returned malformed data (no ';')\n");
+		return NULL;
+	}
+	*end = '\0';
+
+	return strdup(msg);
+}