Description: Grow m_pPrinterBuffer if needed on each page

Author: Bernhard Übelacker <bernhardu@mailbox.org>
Bug-Debian: https://bugs.debian.org/974828
Bug-Ubuntu: https://launchpad.net/bugs/1904318
Last-Update: 2021-02-26

Index: hplip-3.20.11+dfsg0/prnt/hpcups/HPCupsFilter.cpp
===================================================================
--- hplip-3.20.11+dfsg0.orig/prnt/hpcups/HPCupsFilter.cpp
+++ hplip-3.20.11+dfsg0/prnt/hpcups/HPCupsFilter.cpp
@@ -199,7 +199,7 @@ void HPCupsFilter::WriteKBMPRaster (FILE
     fwrite (black_raster, 1, adj_k_width, fp);
 }
 
-HPCupsFilter::HPCupsFilter() : m_pPrinterBuffer(NULL)
+HPCupsFilter::HPCupsFilter() : m_pPrinterBuffer(NULL), m_PrinterBufferSize(0)
 {
     setbuf (stderr, NULL);
 
@@ -226,6 +226,7 @@ void HPCupsFilter::cleanup()
     if (m_pPrinterBuffer) {
         delete [] m_pPrinterBuffer;
         m_pPrinterBuffer = NULL;
+        m_PrinterBufferSize = 0;
     }
 
     if(m_ppd){
@@ -497,8 +498,6 @@ DRIVER_ERROR HPCupsFilter::startPage (cu
         dbglog("HPCUPS: returning NO_ERROR from startPage\n");
     }
 
-    m_pPrinterBuffer = new BYTE[cups_header->cupsWidth * 4 + 32];
-
     return NO_ERROR;
 }
 
@@ -663,6 +662,14 @@ int HPCupsFilter::processRasterData(cups
 
         current_page_number++;
 
+        if (m_PrinterBufferSize < (cups_header.cupsWidth * 4 + 32)) {
+            m_PrinterBufferSize = cups_header.cupsWidth * 4 + 32;
+            if (m_pPrinterBuffer) {
+                delete [] m_pPrinterBuffer;
+            }
+            m_pPrinterBuffer = new BYTE[m_PrinterBufferSize];
+        }
+
         if (current_page_number == 1) {
 
             if (startPage(&cups_header) != NO_ERROR) {
Index: hplip-3.20.11+dfsg0/prnt/hpcups/HPCupsFilter.h
===================================================================
--- hplip-3.20.11+dfsg0.orig/prnt/hpcups/HPCupsFilter.h
+++ hplip-3.20.11+dfsg0/prnt/hpcups/HPCupsFilter.h
@@ -89,6 +89,7 @@ public:
 private:
 
     BYTE            *m_pPrinterBuffer;        
+    int              m_PrinterBufferSize;
     Job            m_Job;
     SystemServices         *m_pSys;
     int             child_pid;