Load cups into easysw/current.

[thirdparty/cups.git] / backend / parallel.c

diff --git a/backend/parallel.c b/backend/parallel.c
index c33fc10d2c70c7a0fbc8cccea10c2520601f65a9..4164e789596b2f7c43e3b419b3908147f770f8e8 100644 (file)
--- a/backend/parallel.c
+++ b/backend/parallel.c
@@ -1,9 +1,9 @@
 /*
- * "$Id: parallel.c 6181 2007-01-03 18:51:27Z mike $"
+ * "$Id: parallel.c 6178 2007-01-03 18:09:17Z mike $"
  *
  *   Parallel port backend for the Common UNIX Printing System (CUPS).
  *
- *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
  *
  *   These coded instructions, statements, and computer programs are the
  *   property of Easy Software Products and are protected by Federal
@@ -27,6 +27,7 @@
  *
  *   main()         - Send a file to the specified parallel port.
  *   list_devices() - List all parallel devices.
+ *   side_cb()      - Handle side-channel requests...
  */
 
 /*
@@ -66,7 +67,8 @@
  * Local functions...
  */
 
-void   list_devices(void);
+static void    list_devices(void);
+static void    side_cb(int print_fd, int device_fd, int use_bc);
 
 
 /*
@@ -284,7 +286,7 @@ main(int  argc,                             /* I - Number of command-line arguments (6 or 7) */
       lseek(print_fd, 0, SEEK_SET);
     }
 
-    tbytes = backendRunLoop(print_fd, device_fd, use_bc);
+    tbytes = backendRunLoop(print_fd, device_fd, use_bc, side_cb);
 
     if (print_fd != 0 && tbytes >= 0)
       fprintf(stderr, "INFO: Sent print file, " CUPS_LLFMT " bytes...\n",
@@ -308,7 +310,7 @@ main(int  argc,                             /* I - Number of command-line arguments (6 or 7) */
  * 'list_devices()' - List all parallel devices.
  */
 
-void
+static void
 list_devices(void)
 {
 #if defined(__hpux) || defined(__sgi) || defined(__sun)
@@ -598,5 +600,70 @@ list_devices(void)
 
 
 /*
- * End of "$Id: parallel.c 6181 2007-01-03 18:51:27Z mike $".
+ * 'side_cb()' - Handle side-channel requests...
+ */
+
+static void
+side_cb(int print_fd,                  /* I - Print file */
+        int device_fd,                 /* I - Device file */
+       int use_bc)                     /* I - Using back-channel? */
+{
+  cups_sc_command_t    command;        /* Request command */
+  cups_sc_status_t     status;         /* Request/response status */
+  char                 data[2048];     /* Request/response data */
+  int                  datalen;        /* Request/response data size */
+
+
+  datalen = sizeof(data);
+
+  if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
+  {
+    fputs("WARNING: Failed to read side-channel request!\n", stderr);
+    return;
+  }
+
+  switch (command)
+  {
+    case CUPS_SC_CMD_DRAIN_OUTPUT :
+        if (tcdrain(device_fd))
+         status = CUPS_SC_STATUS_IO_ERROR;
+       else
+         status = CUPS_SC_STATUS_OK;
+
+       datalen = 0;
+        break;
+
+    case CUPS_SC_CMD_GET_BIDI :
+        data[0] = use_bc;
+        datalen = 1;
+        break;
+
+    case CUPS_SC_CMD_GET_DEVICE_ID :
+        memset(data, 0, sizeof(data));
+
+        if (backendGetDeviceID(device_fd, data, sizeof(data) - 1,
+                              NULL, 0, NULL, NULL, 0))
+        {
+         status  = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+         datalen = 0;
+       }
+       else
+        {
+         status  = CUPS_SC_STATUS_OK;
+         datalen = strlen(data);
+       }
+        break;
+
+    default :
+        status  = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+       datalen = 0;
+       break;
+  }
+
+  cupsSideChannelWrite(command, status, data, datalen, 1.0);
+}
+
+
+/*
+ * End of "$Id: parallel.c 6178 2007-01-03 18:09:17Z mike $".
  */