Bug#5439 : mysql_server_init() crashes if ShiftJIS path is passed

(important for Adobe).

mf_pack.c, mf_dirname.c, charset.c, my_sys.h:

  - adding fs_character_set() function on Windows
  - ignoring fake slashes which are just multibyte
    parts in several functions in /mysys

Verified by Shu to work on WinXP and Win2k.
Test is not possible, or very hard to do.


include/my_sys.h:
  Bug#5439 : mysql_server_init() crashes if ShiftJIS path is passed
  (important for Adobe)
  - adding fs_character_set() function on Windows
  - ignoring fake slashes which are just multibyte
    parts in several functions in /mysys
mysys/charset.c:
  d
mysys/mf_dirname.c:
  d
mysys/mf_pack.c:
  d

1 files changed, 12 insertions, 0 deletions

diff --git a/mysys/mf_pack.c b/mysys/mf_pack.c
index 86172f648f4..049aa59a578 100644
--- a/mysys/mf_pack.c
+++ b/mysys/mf_pack.c
@@ -124,6 +124,9 @@ uint cleanup_dirname(register my_string to, const char *from)
   reg4 my_string start;
   char parent[5],				/* for "FN_PARENTDIR" */
        buff[FN_REFLEN+1],*end_parentdir;
+#ifdef BACKSLASH_MBTAIL
+  CHARSET_INFO *fs= fs_character_set();
+#endif
   DBUG_ENTER("cleanup_dirname");
   DBUG_PRINT("enter",("from: '%s'",from));
 
@@ -141,6 +144,15 @@ uint cleanup_dirname(register my_string to, const char *from)
   length=(uint) (strmov(parent+1,FN_PARENTDIR)-parent);
   for (pos=start ; (*pos= *from_ptr++) != 0 ; pos++)
   {
+#ifdef BACKSLASH_MBTAIL
+    uint l;
+    if (use_mb(fs) && (l= my_ismbchar(fs, from_ptr - 1, from_ptr + 2)))
+    {
+      for (l-- ; l ; *++pos= *from_ptr++, l--);
+      start= pos + 1; /* Don't look inside multi-byte char */
+      continue;
+    }
+#endif
     if (*pos == '/')
       *pos = FN_LIBCHAR;
     if (*pos == FN_LIBCHAR)