Load cups into easysw/current.

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

diff --git a/backend/socket.c b/backend/socket.c
index 4c779ec7d7ac1329e96b5e6f547b92d848ceee68..19994f0421777a72b25be800b31c7cdc7ce796b8 100644 (file)
--- a/backend/socket.c
+++ b/backend/socket.c
@@ -1,5 +1,5 @@
 /*
- * "$Id: socket.c 6403 2007-03-27 16:00:56Z mike $"
+ * "$Id: socket.c 6438 2007-04-03 17:52:41Z mike $"
  *
  *   AppSocket backend for the Common UNIX Printing System (CUPS).
  *
@@ -27,6 +27,7 @@
  *
  *   main()    - Send a file to the printer or server.
  *   side_cb() - Handle side-channel requests...
+ *   wait_bc() - Wait for back-channel data...
  */
 
 /*
@@ -56,6 +57,7 @@
  */
 
 static void    side_cb(int print_fd, int device_fd, int use_bc);
+static int     wait_bc(int device_fd, int secs);
 
 
 /*
@@ -93,9 +95,6 @@ main(int  argc,                               /* I - Number of command-line arguments (6 or 7) */
                  *addr;                /* Connected address */
   char         addrname[256];          /* Address name */
   ssize_t      tbytes;                 /* Total number of bytes written */
-  struct timeval timeout;              /* Timeout for select() */
-  fd_set       input;                  /* Input set for select() */
-  ssize_t      bc_bytes;               /* Number of back-channel bytes read */
 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
   struct sigaction action;             /* Actions for POSIX signals */
 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
@@ -387,6 +386,12 @@ main(int  argc,                            /* I - Number of command-line arguments (6 or 7) */
               CUPS_LLCAST tbytes);
   }
 
+ /*
+  * Get any pending back-channel data...
+  */
+
+  while (wait_bc(device_fd, 5) > 0);
+
   if (waiteof)
   {
    /*
@@ -398,37 +403,7 @@ main(int  argc,                            /* I - Number of command-line arguments (6 or 7) */
 
     shutdown(device_fd, 1);
 
-    for (;;)
-    {
-     /*
-      * Wait a maximum of 90 seconds for backchannel data or a closed
-      * connection...
-      */
-
-      timeout.tv_sec  = 90;
-      timeout.tv_usec = 0;
-
-      FD_ZERO(&input);
-      FD_SET(device_fd, &input);
-
-      if (select(device_fd + 1, &input, NULL, NULL, &timeout) > 0)
-      {
-       /*
-       * Grab the data coming back and spit it out to stderr...
-       */
-
-       if ((bc_bytes = read(device_fd, resource, sizeof(resource))) > 0)
-       {
-         fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n",
-                 (int)bc_bytes);
-         cupsBackChannelWrite(resource, bc_bytes, 1.0);
-       }
-       else
-         break;
-      }
-      else
-       break;
-    }
+    while (wait_bc(device_fd, 90) > 0);
   }
 
  /*
@@ -503,5 +478,49 @@ side_cb(int print_fd,                      /* I - Print file */
 
 
 /*
- * End of "$Id: socket.c 6403 2007-03-27 16:00:56Z mike $".
+ * 'wait_bc()' - Wait for back-channel data...
+ */
+
+static int                             /* O - # bytes read or -1 on error */
+wait_bc(int device_fd,                 /* I - Socket */
+        int secs)                      /* I - Seconds to wait */
+{
+  struct timeval timeout;              /* Timeout for select() */
+  fd_set       input;                  /* Input set for select() */
+  ssize_t      bytes;                  /* Number of back-channel bytes read */
+  char         buffer[1024];           /* Back-channel buffer */
+
+
+ /*
+  * Wait up to "secs" seconds for backchannel data...
+  */
+
+  timeout.tv_sec  = secs;
+  timeout.tv_usec = 0;
+
+  FD_ZERO(&input);
+  FD_SET(device_fd, &input);
+
+  if (select(device_fd + 1, &input, NULL, NULL, &timeout) > 0)
+  {
+   /*
+    * Grab the data coming back and spit it out to stderr...
+    */
+
+    if ((bytes = read(device_fd, buffer, sizeof(buffer))) > 0)
+    {
+      fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n",
+             (int)bytes);
+      cupsBackChannelWrite(buffer, bytes, 1.0);
+    }
+
+    return (bytes);
+  }
+  else
+    return (-1);
+}
+
+
+/*
+ * End of "$Id: socket.c 6438 2007-04-03 17:52:41Z mike $".
  */