ncurses 5.9 - patch 20141101

[ncurses.git] / ncurses / base / lib_screen.c

diff --git a/ncurses/base/lib_screen.c b/ncurses/base/lib_screen.c
index 176edc4e43c04d2c20a0e6c1933e048997bf964e..695ed30e7e1000b98011a70b6c0624921ab6ca58 100644 (file)
--- a/ncurses/base/lib_screen.c
+++ b/ncurses/base/lib_screen.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2009,2011 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -39,7 +39,7 @@
 #define CUR SP_TERMTYPE
 #endif
 
-MODULE_ID("$Id: lib_screen.c,v 1.35 2009/06/06 20:26:17 tom Exp $")
+MODULE_ID("$Id: lib_screen.c,v 1.41 2011/10/22 15:03:11 tom Exp $")
 
 #define MAX_SIZE 0x3fff                /* 16k is big enough for a window or pad */
 
@@ -49,20 +49,25 @@ NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep)
     WINDOW tmp, *nwin;
     int n;
 
-    T((T_CALLED("getwin(%p)"), filep));
+    T((T_CALLED("getwin(%p)"), (void *) filep));
 
+    if (filep == 0) {
+       returnWin(0);
+    }
     clearerr(filep);
-    (void) fread(&tmp, sizeof(WINDOW), 1, filep);
-    if (ferror(filep)
+    if (fread(&tmp, (size_t) 1, sizeof(WINDOW), filep) < sizeof(WINDOW)
+       || ferror(filep)
        || tmp._maxy == 0
        || tmp._maxy > MAX_SIZE
        || tmp._maxx == 0
-       || tmp._maxx > MAX_SIZE)
+       || tmp._maxx > MAX_SIZE) {
        returnWin(0);
+    }
 
     if (tmp._flags & _ISPAD) {
        nwin = NCURSES_SP_NAME(newpad) (NCURSES_SP_ARGx
-                                       tmp._maxy + 1, tmp._maxx + 1);
+                                       tmp._maxy + 1,
+                                       tmp._maxx + 1);
     } else {
        nwin = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
                                        tmp._maxy + 1,
@@ -75,6 +80,8 @@ NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep)
      * made sense is probably gone.
      */
     if (nwin != 0) {
+       size_t linesize = sizeof(NCURSES_CH_T) * (size_t) (tmp._maxx + 1);
+
        nwin->_curx = tmp._curx;
        nwin->_cury = tmp._cury;
        nwin->_maxy = tmp._maxy;
@@ -106,11 +113,8 @@ NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep)
 
        for (n = 0; n <= nwin->_maxy; n++) {
            clearerr(filep);
-           (void) fread(nwin->_line[n].text,
-                        sizeof(NCURSES_CH_T),
-                        (size_t) (nwin->_maxx + 1),
-                        filep);
-           if (ferror(filep)) {
+           if (fread(nwin->_line[n].text, (size_t) 1, linesize, filep) < linesize
+               || ferror(filep)) {
                delwin(nwin);
                returnWin(0);
            }
@@ -134,13 +138,13 @@ putwin(WINDOW *win, FILE *filep)
     int code = ERR;
     int n;
 
-    T((T_CALLED("putwin(%p,%p)"), win, filep));
+    T((T_CALLED("putwin(%p,%p)"), (void *) win, (void *) filep));
 
     if (win != 0) {
        size_t len = (size_t) (win->_maxx + 1);
 
        clearerr(filep);
-       if (fwrite(win, sizeof(WINDOW), 1, filep) != 1
+       if (fwrite(win, sizeof(WINDOW), (size_t) 1, filep) != 1
            || ferror(filep))
              returnCode(code);
 
@@ -161,7 +165,7 @@ NCURSES_SP_NAME(scr_restore) (NCURSES_SP_DCLx const char *file)
 {
     FILE *fp = 0;
 
-    T((T_CALLED("scr_restore(%p,%s)"), SP_PARM, _nc_visbuf(file)));
+    T((T_CALLED("scr_restore(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
 
     if (_nc_access(file, R_OK) < 0
        || (fp = fopen(file, "rb")) == 0) {
@@ -188,18 +192,20 @@ scr_restore(const char *file)
 NCURSES_EXPORT(int)
 scr_dump(const char *file)
 {
+    int result;
     FILE *fp = 0;
 
     T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file)));
 
     if (_nc_access(file, W_OK) < 0
        || (fp = fopen(file, "wb")) == 0) {
-       returnCode(ERR);
+       result = ERR;
     } else {
        (void) putwin(newscr, fp);
        (void) fclose(fp);
-       returnCode(OK);
+       result = OK;
     }
+    returnCode(result);
 }
 
 NCURSES_EXPORT(int)
@@ -208,7 +214,7 @@ NCURSES_SP_NAME(scr_init) (NCURSES_SP_DCLx const char *file)
     FILE *fp = 0;
     int code = ERR;
 
-    T((T_CALLED("scr_init(%p,%s)"), SP_PARM, _nc_visbuf(file)));
+    T((T_CALLED("scr_init(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
 
     if (SP_PARM != 0 &&
 #ifdef USE_TERM_DRIVER
@@ -242,7 +248,7 @@ scr_init(const char *file)
 NCURSES_EXPORT(int)
 NCURSES_SP_NAME(scr_set) (NCURSES_SP_DCLx const char *file)
 {
-    T((T_CALLED("scr_set(%p,%s)"), SP_PARM, _nc_visbuf(file)));
+    T((T_CALLED("scr_set(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
 
     if (NCURSES_SP_NAME(scr_init) (NCURSES_SP_ARGx file) == ERR) {
        returnCode(ERR);