X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Fserver%2Fhandler_door.c;h=190769aa739f03ed764d7d9e32077a9ddca51b20;hb=0b5755205d388b5704c040c21285c0b7ab58825e;hp=cc66945d810f237a60fd7f051814ea14b71a824b;hpb=21ed7a19f1f3e046c2985043e7fbe054b65cb4e4;p=tpg%2Fopendispense2.git

diff --git a/src/server/handler_door.c b/src/server/handler_door.c
index cc66945..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.
@@ -18,7 +18,6 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <unistd.h>
-#include <sys/wait.h>
 #include <pty.h>
 
 #define DOOR_UNLOCKED_DELAY	5	// Time in seconds before the door re-locks
@@ -29,6 +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 = {
@@ -37,20 +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;
 }
 
@@ -84,15 +76,7 @@ int Door_CanDispense(int User, int Item)
  */
 int Door_DoDispense(int User, int Item)
 {
-	FILE	*child_stdin;
-	#if 0
-	 int	stdin_pair[2];
-	 int	stdout_pair[2];
-	#else
-	 int	child_stdin_fd;
-	#endif
-	pid_t	childPid;
-	pid_t	parentPid;
+	 int	door_serial_handle;
 	
 	#if DEBUG
 	printf("Door_DoDispense: (User=%i,Item=%i)\n", User, Item);
@@ -110,95 +94,72 @@ int Door_DoDispense(int User, int Item)
 		return 1;
 	}
 	
-	giDoor_ChildStatus = 0;	// Set child status to zero
-	parentPid = getpid();
-	childPid = forkpty(&child_stdin_fd, NULL, NULL, NULL);
-	
-	if( childPid < 0 )
-	{
-		perror("fork");
+	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;
 	}
-	
-	// Child process
-	if( childPid == 0 )
-	{
-		execl("/usr/bin/llogin", "llogin", "door", "-w-", NULL);
-		perror("execl");
-		exit(-1);
-	}
-	
-	child_stdin = fdopen(child_stdin_fd, "w");
 
-	int read_child_output()	
+	// Disable local echo
 	{
-		char	buf[1024];
-		 int	len;
-		if( giDoor_ChildStatus || (len = read(child_stdin_fd, buf, sizeof buf)) < 0)
-		{
-			#if DEBUG
-			printf("Door_DoDispense: fread fail\n");
-			#endif
-			return -1;
-		}
-		buf[len] = '\0';
-		
-		#if DEBUG > 1
-		printf("Door_DoDispense: buf = %i '%s'\n", len, buf);
-		#endif
-		return 0;
+		struct termios	info;
+		tcgetattr(door_serial_handle, &info);
+		info.c_cflag &= ~CLOCAL;
+		tcsetattr(door_serial_handle, TCSANOW, &info);
 	}
 
-	if( read_child_output() )	return -1;
-	
-	// Send password
-	if( giDoor_ChildStatus || fputs(gsDoor_Password, child_stdin) <= 0 ) {
-		printf("Door_DoDispense: fputs password fail\n");
-		return -1;
-	}
-	fputs("\n", child_stdin);
-	fflush(child_stdin);
-	
-	if( read_child_output() )	return -1;
-	
-	#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 failed (or child terminated)\n");
-		#endif
-		return -1;
-	}
-	fflush(child_stdin);
-	
-	// Wait before re-locking
-	sleep(DOOR_UNLOCKED_DELAY);
+//	flush(door_serial_handle);
 
-	#if DEBUG
-	printf("Door_DoDispense: Door re-lock\n");
-	#endif
-	// Re-lock the door (and quit llogin)
-	if( giDoor_ChildStatus || fputs("ATH0\n", child_stdin) == 0 ) {
-		fprintf(stderr, "Oh F**k, the door may be stuck unlocked, someone use llogin!\n");
+	writes(door_serial_handle, "4;");
+
+#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;
 	}
-	fflush(child_stdin);
-	fputs("\x1D", child_stdin);
+#endif
 
-	// Wait a little so llogin can send the lock message
-	sleep(1);
-	
-	fclose(child_stdin);
-	close(child_stdin_fd);
+	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);
+}