File xfig.3.2.5b-preview.dif of Package xfig.import4727

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File xfig.3.2.5b-preview.dif of Package xfig.import4727

--- f_readeps.c
+++ f_readeps.c	2011-06-17 12:46:08.519926308 +0000
@@ -252,11 +252,12 @@ bitmap_from_gs(file, filetype, pic, urx,
 {
     char        buf[300];
     FILE       *tmpfp, *pixfile, *gsfile;
-    char       *psnam, *driver;
-    int         status, wid, ht, nbitmap, fd;
+    char       *driver;
+    int         status, wid, ht, nbitmap, fd, len;
     char        tmpfile[PATH_MAX],
 		pixnam[PATH_MAX],
 		errnam[PATH_MAX],
+		psnam[PATH_MAX],
 		gscom[2 * PATH_MAX];
 
     wid = urx - llx;
@@ -307,19 +308,26 @@ bitmap_from_gs(file, filetype, pic, urx,
 	/* for color, use pcx */
 	driver = "pcx256";
     }
-    /* avoid absolute paths (for Cygwin with gswin32) by changing directory */
-    if (tmpfile[0] == '/') {
-	psnam = strrchr(tmpfile, '/');
-	*psnam = 0;
-	sprintf(gscom, "cd \"%s/\";", tmpfile);
-	*psnam++ = '/';		/* Restore name for unlink() below */
-    } else {
-	psnam = tmpfile;
-	gscom[0] = '\0';
+    /* Canonicalize the eps file filename, needed to "defeat" gs after .locksafe */
+    if (!realpath(tmpfile, psnam)) {
+	file_msg("Cannot canonicalize %s: %s\n", tmpfile, strerror(errno));
+	return False;
+    }
+    /* From Language.htm of ghostscript 9.00 and higher:
+     * If Ghostscript is started with -dNOSAFER or -dDELAYSAFER, this operator can
+     * be used to enter SAFER mode with the current set of PermitFile... user
+     * parameters in effect. Since .setsafe sets the PermitFile... user parameters
+     * to empty arrays, a script or job server that needs to enable certain paths
+     * for file Reading, Writing and/or Control can use this operator to perform
+     * the locking needed to enter SAFER mode.
+     */
+    len = snprintf(gscom, sizeof(gscom) - 1,
+	    "%s -r72x72 -sDEVICE=%s -g%dx%d -dDELAYSAFER -sOutputFile=%s -c '<</PermitFileReading[(%s)]>> setuserparams .locksafe' -q - > %s 2>&1",
+	    appres.ghostscript, driver, wid, ht, pixnam, psnam, errnam);
+    if (len >= sizeof(gscom) - 1 || len < 0) {
+	file_msg("Cannot write to buffer, file name to large: %s\n", psnam);
+	return False;
     }
-    sprintf(&gscom[strlen(gscom)],
-	    "%s -r72x72 -dSAFER -sDEVICE=%s -g%dx%d -sOutputFile=%s -q - > %s 2>&1",
-	    appres.ghostscript, driver, wid, ht, pixnam, errnam);
     if (appres.DEBUG)
 	fprintf(stderr,"calling: %s\n",gscom);
     if ((gsfile = popen(gscom, "w")) == 0) {

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