XFree86-xfs.patch

diff -Nur XFree86-4.0.2.org/xc/programs/xfs/difs/fonts.c XFree86-4.0.2/xc/programs/xfs/difs/fonts.c
--- XFree86-4.0.2.org/xc/programs/xfs/difs/fonts.c	Thu Dec 14 20:54:53 2000
+++ XFree86-4.0.2/xc/programs/xfs/difs/fonts.c	Thu Dec 21 09:26:42 2000
@@ -108,6 +108,113 @@
 }
 
 /*
+ * xf86GetPathElem --
+ *      Extract a single element from the font path string starting at
+ *      pnt.  The font path element will be returned, and pnt will be
+ *      updated to point to the start of the next element, or set to
+ *      NULL if there are no more.
+ */
+char *
+xf86GetPathElem(pnt)
+     char **pnt;
+{
+  char *p1;
+ 
+  p1 = *pnt;
+  *pnt = index(*pnt, ',');
+  if (*pnt != NULL) {
+    **pnt = '\0';
+    *pnt += 1;
+  }
+  return(p1);
+}
+
+/*
+ * xf86ValidateFontPath --
+ *      Validates the user-specified font path.  Each element that
+ *      begins with a '/' is checked to make sure the directory exists.
+ *      If the directory exists, the existence of a file named 'fonts.dir'
+ *      is checked.  If either check fails, an error is printed and the
+ *      element is removed from the font path.
+ */
+#define DIR_FILE "/fonts.dir"
+#define CHECK_TYPE(mode, type) ((S_IFMT & (mode)) == (type))
+static char *
+xf86ValidateFontPath(path)
+     char *path;
+{
+  char *tmp_path, *out_pnt, *path_elem, *next, *p1, *dir_elem;
+  struct stat stat_buf;
+  int flag;
+  int dirlen;
+ 
+  tmp_path = (char *)calloc(1,strlen(path)+1);
+  out_pnt = tmp_path;
+  path_elem = NULL;
+  next = path;
+  while (next != NULL) {
+    path_elem = xf86GetPathElem(&next);
+#ifndef __EMX__
+    if (*path_elem == '/') {
+      dir_elem = (char *)calloc(1, strlen(path_elem) + 1);
+      if ((p1 = strchr(path_elem, ':')) != 0)
+#else
+    /* OS/2 must prepend X11ROOT */
+    if (*path_elem == '/') {
+      path_elem = (char*)__XOS2RedirRoot(path_elem);
+      dir_elem = (char*)calloc(1, strlen(path_elem) + 1);
+      if (p1 = strchr(path_elem+2, ':'))
+#endif
+        dirlen = p1 - path_elem;
+      else
+        dirlen = strlen(path_elem);
+      strncpy(dir_elem, path_elem, dirlen);
+      dir_elem[dirlen] = '\0';
+      flag = stat(dir_elem, &stat_buf);
+      if (flag == 0)
+        if (!CHECK_TYPE(stat_buf.st_mode, S_IFDIR))
+          flag = -1;
+      if (flag != 0) {
+	printf("warning!\n");
+	ErrorF("Warning: The directory \"%s\" does not exist.\n", dir_elem);
+	ErrorF("         Entry deleted from font path.\n");
+        continue;
+      }
+      else {
+        p1 = (char *)malloc(strlen(dir_elem)+strlen(DIR_FILE)+1);
+        strcpy(p1, dir_elem);
+        strcat(p1, DIR_FILE);
+        flag = stat(p1, &stat_buf);
+        if (flag == 0)
+          if (!CHECK_TYPE(stat_buf.st_mode, S_IFREG))
+            flag = -1;
+#ifndef __EMX__
+        free(p1);
+#endif
+        if (flag != 0) {
+	  ErrorF("Warning: 'fonts.dir' not found (or not valid) in \"%s\".\n",
+                 dir_elem);
+          ErrorF("          Entry deleted from font path.\n");
+          ErrorF("          (Run 'mkfontdir' on \"%s\").\n", dir_elem);
+          continue;
+        }
+      }
+      free(dir_elem);
+    }
+ 
+    /*
+     * Either an OK directory, or a font server name.  So add it to
+     * the path.
+     */
+    if (out_pnt != tmp_path)
+      *out_pnt++ = ',';
+    strcat(out_pnt, path_elem);
+    out_pnt += strlen(path_elem);
+  }
+  return(tmp_path);
+}
+
+/*
  * note that the font wakeup queue is not refcounted.  this is because
  * an fpe needs to be added when it's inited, and removed when it's finally
  * freed, in order to handle any data that isn't requested, like FS events.
@@ -744,8 +851,12 @@
                *end,
                *p;
     int         err;
+    char       *fixedpath;
+
+    fixedpath = xf86ValidateFontPath(str);
 
-    len = strlen(str) + 1;
+    len = strlen(fixedpath) + 1;
+    str = fixedpath;
     paths = p = (char *) ALLOCATE_LOCAL(len);
     npaths = 0;
 
@@ -765,6 +876,7 @@
 
     err = set_font_path_elements(npaths, paths, badpath);
 
+    free(fixedpath);
     DEALLOCATE_LOCAL(paths);
 
     return err;