Added ngx_filename_cmp() with "/" sorted to the left.

This patch fixes incorrect handling of auto redirect in configurations
like:

    location /0  { }
    location /a- { }
    location /a/ { proxy_pass ... }

With previously used sorting, this resulted in the following locations
tree (as "-" is less than "/"):

        "/a-"
    "/0"    "/a/"

and a request to "/a" didn't match "/a/" with auto_redirect, as it
didn't traverse relevant tree node during lookup (it tested "/a-",
then "/0", and then falled back to null location).

To preserve locale use for non-ASCII characters on case-insensetive
systems, libc's tolower() used.

8 files changed, 10 insertions, 17 deletions

diff --git a/src/os/unix/ngx_darwin_config.h b/src/os/unix/ngx_darwin_config.h
index 149778c29..7ac86c73e 100644
--- a/src/os/unix/ngx_darwin_config.h
+++ b/src/os/unix/ngx_darwin_config.h
@@ -20,6 +20,7 @@
 #include <stddef.h>             /* offsetof() */
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index df759df52..4b2016500 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -192,17 +192,6 @@ ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm);
 void ngx_close_file_mapping(ngx_file_mapping_t *fm);
 
 
-#if (NGX_HAVE_CASELESS_FILESYSTEM)
-
-#define ngx_filename_cmp(s1, s2, n)  strncasecmp((char *) s1, (char *) s2, n)
-
-#else
-
-#define ngx_filename_cmp         ngx_memcmp
-
-#endif
-
-
 #define ngx_realpath(p, r)       (u_char *) realpath((char *) p, (char *) r)
 #define ngx_realpath_n           "realpath()"
 #define ngx_getcwd(buf, size)    (getcwd((char *) buf, size) != NULL)
diff --git a/src/os/unix/ngx_freebsd_config.h b/src/os/unix/ngx_freebsd_config.h
index 248e7a731..92b2928c8 100644
--- a/src/os/unix/ngx_freebsd_config.h
+++ b/src/os/unix/ngx_freebsd_config.h
@@ -16,6 +16,7 @@
 #include <stddef.h>             /* offsetof() */
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
diff --git a/src/os/unix/ngx_linux_config.h b/src/os/unix/ngx_linux_config.h
index 8467a97fe..72594bac0 100644
--- a/src/os/unix/ngx_linux_config.h
+++ b/src/os/unix/ngx_linux_config.h
@@ -22,6 +22,7 @@
 #include <stddef.h>             /* offsetof() */
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
diff --git a/src/os/unix/ngx_posix_config.h b/src/os/unix/ngx_posix_config.h
index 4cf90cc98..d725659df 100644
--- a/src/os/unix/ngx_posix_config.h
+++ b/src/os/unix/ngx_posix_config.h
@@ -39,6 +39,7 @@
 #include <stddef.h>             /* offsetof() */
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
diff --git a/src/os/unix/ngx_solaris_config.h b/src/os/unix/ngx_solaris_config.h
index e664ba826..ddfd98457 100644
--- a/src/os/unix/ngx_solaris_config.h
+++ b/src/os/unix/ngx_solaris_config.h
@@ -22,6 +22,7 @@
 #include <stddef.h>             /* offsetof() */
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
diff --git a/src/os/win32/ngx_files.h b/src/os/win32/ngx_files.h
index a4624738f..08e5dc67e 100644
--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -172,11 +172,6 @@ ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm);
 void ngx_close_file_mapping(ngx_file_mapping_t *fm);
 
 
-#define NGX_HAVE_CASELESS_FILESYSTEM  1
-
-#define ngx_filename_cmp(s1, s2, n) _strnicmp((char *) s1, (char *) s2, n)
-
-
 u_char *ngx_realpath(u_char *path, u_char *resolved);
 #define ngx_realpath_n              ""
 #define ngx_getcwd(buf, size)       GetCurrentDirectory(size, (char *) buf)
diff --git a/src/os/win32/ngx_win32_config.h b/src/os/win32/ngx_win32_config.h
index 67105f1af..fcbb30845 100644
--- a/src/os/win32/ngx_win32_config.h
+++ b/src/os/win32/ngx_win32_config.h
@@ -45,6 +45,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <ctype.h>
 #include <locale.h>
 
 #ifdef __WATCOMC__
@@ -123,7 +124,6 @@ typedef unsigned __int32    uint32_t;
 typedef __int32             int32_t;
 typedef unsigned __int16    uint16_t;
 #define ngx_libc_cdecl      __cdecl
-#define _strnicmp           strnicmp
 
 #else /* __WATCOMC__ */
 typedef unsigned int        uint32_t;
@@ -196,6 +196,10 @@ typedef int                 sig_atomic_t;
 #define NGX_HAVE_INHERITED_NONBLOCK  1
 #endif
 
+#ifndef NGX_HAVE_CASELESS_FILESYSTEM
+#define NGX_HAVE_CASELESS_FILESYSTEM  1
+#endif
+
 #ifndef NGX_HAVE_WIN32_TRANSMITPACKETS
 #define NGX_HAVE_WIN32_TRANSMITPACKETS  1
 #define NGX_HAVE_WIN32_TRANSMITFILE     0