From 12b5b81a975e2190aebe762b10ceadccd439a45a Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 15 Dec 2003 04:07:03 +0000
Subject: * dir.c (check_dirname): check string safety and remove extraneous  
 trailing directory separators.  [ruby-dev:22279]

* file.c: extern rb_path_next, rb_path_skip_prefix,
  rb_path_last_separator, rb_path_end.

* intern.h: prototypes for rb_path_next, rb_path_skip_prefix,
  rb_path_last_separator, rb_path_end.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5191 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 11 +++++++++++
 dir.c     | 37 +++++++++++++++++++------------------
 file.c    | 18 ++++++++++--------
 intern.h  |  4 ++++
 4 files changed, 44 insertions(+), 26 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5c62a6602d..36910886f1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Mon Dec 15 13:06:58 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* dir.c (check_dirname): check string safety and remove extraneous
+	  trailing directory separators.  [ruby-dev:22279]
+
+	* file.c: extern rb_path_next, rb_path_skip_prefix,
+	  rb_path_last_separator, rb_path_end.
+
+	* intern.h: prototypes for rb_path_next, rb_path_skip_prefix,
+	  rb_path_last_separator, rb_path_end.
+
 Mon Dec 15 09:27:46 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* ext/openssl/ossl_pkcs12.c (ossl_pkcs12_initialize): first argument
diff --git a/dir.c b/dir.c
index d16e311a11..e1764c7582 100644
--- a/dir.c
+++ b/dir.c
@@ -87,21 +87,10 @@ char *strchr _((char*,char));
 
 #if defined DOSISH
 #define isdirsep(c) ((c) == '/' || (c) == '\\')
-static const char *
-find_dirsep(s)
-    const char *s;
-{
-    while (*s) {
-	if (isdirsep(*s))
-	    return s;
-	s = CharNext(s);
-    }
-    return 0;
-}
 #else
 #define isdirsep(c) ((c) == '/')
-#define find_dirsep(s) strchr(s, '/')
 #endif
+#define find_dirsep(s) rb_path_next(s)
 
 static char *
 range(pat, test, flags)
@@ -509,13 +498,27 @@ dir_s_getwd(dir)
     return cwd;
 }
 
+static void check_dirname _((volatile VALUE *));
+static void
+check_dirname(dir)
+    volatile VALUE *dir;
+{
+    char *path, *pend;
+
+    SafeStringValue(*dir);
+    rb_secure(2);
+    path = RSTRING(*dir)->ptr;
+    if (*(path && pend = rb_path_end(rb_path_skip_prefix(path)))) {
+	*dir = rb_str_new(path, pend - path);
+    }
+}
+
 static VALUE
 dir_s_chroot(dir, path)
     VALUE dir, path;
 {
 #if defined(HAVE_CHROOT) && !defined(__CHECKER__)
-    rb_secure(2);
-    SafeStringValue(path);
+    check_dirname(&path);
 
     if (chroot(RSTRING(path)->ptr) == -1)
 	rb_sys_fail(RSTRING(path)->ptr);
@@ -543,8 +546,7 @@ dir_s_mkdir(argc, argv, obj)
 	mode = 0777;
     }
 
-    SafeStringValue(path);
-    rb_secure(2);
+    check_dirname(&path);
 #ifndef _WIN32
     if (mkdir(RSTRING(path)->ptr, mode) == -1)
 	rb_sys_fail(RSTRING(path)->ptr);
@@ -560,8 +562,7 @@ static VALUE
 dir_s_rmdir(obj, dir)
     VALUE obj, dir;
 {
-    SafeStringValue(dir);
-    rb_secure(2);
+    check_dirname(&dir);
     if (rmdir(RSTRING(dir)->ptr) < 0)
 	rb_sys_fail(RSTRING(dir)->ptr);
 
diff --git a/file.c b/file.c
index cfa52e76bd..f338db646d 100644
--- a/file.c
+++ b/file.c
@@ -1459,7 +1459,8 @@ skiproot(path)
     return (char *)path;
 }
 
-static inline char *
+#define nextdirsep rb_path_next
+char *
 nextdirsep(s)
     const char *s;
 {
@@ -1469,11 +1470,12 @@ nextdirsep(s)
     return (char *)s;
 }
 
-#if defined(DOSISH_UNC) || defined(DOSISH_DRIVE_LETTER) 
-static inline char *
+#define skipprefix rb_path_skip_prefix
+char *
 skipprefix(path)
     const char *path;
 {
+#if defined(DOSISH_UNC) || defined(DOSISH_DRIVE_LETTER) 
 #ifdef DOSISH_UNC
     if (isdirsep(path[0]) && isdirsep(path[1])) {
 	if (*(path = nextdirsep(path + 2)))
@@ -1484,14 +1486,13 @@ skipprefix(path)
 #ifdef DOSISH_DRIVE_LETTER
     if (has_drive_letter(path))
 	return (char *)(path + 2);
+#endif
 #endif
     return (char *)path;
 }
-#else
-#define skipprefix(path) (path)
-#endif
 
-static char *
+#define strrdirsep rb_path_last_separator
+char *
 strrdirsep(path)
     const char *path;
 {
@@ -1510,7 +1511,8 @@ strrdirsep(path)
     return last;
 }
 
-static char *
+#define chompdirsep rb_path_end
+char *
 chompdirsep(path)
     const char *path;
 {
diff --git a/intern.h b/intern.h
index 3aa96e5816..6cdba0840e 100644
--- a/intern.h
+++ b/intern.h
@@ -222,6 +222,10 @@ VALUE rb_file_s_expand_path _((int, VALUE *));
 void rb_file_const _((const char*, VALUE));
 int rb_find_file_ext _((VALUE*, const char* const*));
 VALUE rb_find_file _((VALUE));
+char *rb_path_next _((const char *));
+char *rb_path_skip_prefix _((const char *));
+char *rb_path_last_separator _((const char *));
+char *rb_path_end _((const char *));
 /* gc.c */
 NORETURN(void rb_memerror __((void)));
 int ruby_stack_check _((void));
-- 
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