Fixes for -safe-string.

[guestfs-browser.git] / utils.ml

diff --git a/utils.ml b/utils.ml
index e0c2ff1..b06a127 100644 (file)
--- a/utils.ml
+++ b/utils.ml
@@ -18,8 +18,6 @@
 
 open ExtString
 open ExtList
-open CamomileLibrary
-open Default.Camomile
 
 open Printf
 
@@ -27,6 +25,7 @@ let (+^) = Int64.add
 let (-^) = Int64.sub
 let ( *^ ) = Int64.mul
 let (/^) = Int64.div
+let (&^) = Int64.logand
 
 type ('a, 'b) either = Left of 'a | Right of 'b
 
@@ -64,8 +63,41 @@ let connect_uri = ref None
 let set_connect_uri conn = connect_uri := conn
 let connect_uri () = !connect_uri
 
+let utf8_copyright = "\194\169"
 let utf8_rarrow = "\xe2\x86\x92"
 
+let pretty_string_of_exn =
+  function
+  | Guestfs.Error str ->
+      "Libguestfs error",
+      sprintf "libguestfs reported an error:
+
+%s
+
+To get more information about libguestfs errors, run guestfs-browser
+with the -x flag on the command line."
+        str
+
+  | Libvirt.Virterror err ->
+      "Libvirt error",
+      sprintf "libvirt reported an error:
+
+%s
+
+To get more information about libvirt errors, run guestfs-browser
+from the command line like this:
+
+LIBVIRT_DEBUG=1 guestfs-browser"
+        (Libvirt.Virterror.to_string err)
+
+  (* Add more exception types here as we come across them.  Last
+   * case below is the catch-all.
+   *)
+  | exn ->
+      let str = Printexc.to_string exn in
+      debug "pretty_string_of_exn: unhandled exception %s" str;
+      "Error", str
+
 let human_size i =
   if i < 1024L then
     sprintf "%Ld" i
@@ -147,16 +179,47 @@ and is_xo mode =           test_bit 0o001L mode
 
 and test_bit mask mode = Int64.logand mode mask = mask
 
+let file_permissions_string mode =
+  let c =
+    if is_socket mode then 's'
+    else if is_symlink mode then 'l'
+    else if is_regular_file mode then '-'
+    else if is_block mode then 'b'
+    else if is_directory mode then 'd'
+    else if is_char mode then 'c'
+    else if is_fifo mode then 'p' else '?' in
+  let ru = if is_ru mode then 'r' else '-' in
+  let wu = if is_wu mode then 'w' else '-' in
+  let xu = if is_xu mode then 'x' else '-' in
+  let rg = if is_rg mode then 'r' else '-' in
+  let wg = if is_wg mode then 'w' else '-' in
+  let xg = if is_xg mode then 'x' else '-' in
+  let ro = if is_ro mode then 'r' else '-' in
+  let wo = if is_wo mode then 'w' else '-' in
+  let xo = if is_xo mode then 'x' else '-' in
+  let str = sprintf "%c%c%c%c%c%c%c%c%c%c" c ru wu xu rg wg xg ro wo xo in
+
+  let suid = is_suid mode in
+  let sgid = is_sgid mode in
+  let svtx = is_svtx mode in
+  let str = Bytes.of_string str in
+  if suid then Bytes.set str 3 's';
+  if sgid then Bytes.set str 6 's';
+  if svtx then Bytes.set str 9 't';
+
+  Bytes.to_string str
+
 let tmpdir () =
   let chan = open_in "/dev/urandom" in
-  let data = String.create 16 in
-  really_input chan data 0 (String.length data);
+  let data = Bytes.create 16 in
+  really_input chan data 0 (Bytes.length data);
   close_in chan;
-  let data = Digest.to_hex (Digest.string data) in
+  let data = Digest.to_hex (Digest.bytes data) in
   (* Note this is secure, because if the name already exists, even as a
    * symlink, mkdir(2) will fail.
    *)
-  let tmpdir = Filename.temp_dir_name // sprintf "guestfsbrowser%s.tmp" data in
+  let tmpdir =
+    Filename.get_temp_dir_name () // sprintf "guestfsbrowser%s.tmp" data in
   Unix.mkdir tmpdir 0o700;
   at_exit
     (fun () ->
@@ -164,9 +227,12 @@ let tmpdir () =
        ignore (Sys.command cmd));
   tmpdir
 
-let utf16le = CharEncoding.utf16le
-let utf8 = CharEncoding.utf8
-let recode = CharEncoding.recode_string ~in_enc:utf16le ~out_enc:utf8
+module CE = CamomileLibraryDefault.Camomile.CharEncoding
+module UTF8 = CamomileLibraryDefault.Camomile.UTF8
+module UChar = CamomileLibraryDefault.Camomile.UChar
+let utf16le = CE.utf16le
+let utf8 = CE.utf8
+let recode = CE.recode_string ~in_enc:utf16le ~out_enc:utf8
 
 let windows_string_to_utf8 str =
   let str = recode str in
@@ -222,3 +288,21 @@ and reg_hex_of_string ?(split_long_lines=false) v =
 let local_file_exists filename =
   try Unix.access filename [Unix.F_OK]; true
   with Unix.Unix_error _ -> false
+
+let basename pathname =
+  let len = String.length pathname in
+  try
+    let i = String.rindex pathname '/' in
+    let r = String.sub pathname (i+1) (len-i-1) in
+    if r = "" then "root" else r
+  with
+    Not_found -> pathname
+
+let extension pathname =
+  let len = String.length pathname in
+  try
+    let i = String.rindex pathname '.' in
+    let r = String.sub pathname i (len-i) in
+    r
+  with
+    Not_found -> ""