Chore: fix CI for v5-backports

cohttp-async.opam

@@ -34,7 +34,7 @@ depends: [
   "cohttp" {= version}
   "conduit-async" {>= "1.2.0"}
   "magic-mime"
-  "mirage-crypto" {with-test}
+  "digestif" {with-test}
   "logs"
   "fmt" {>= "0.8.2"}
   "sexplib0"

cohttp-async/src/server.ml

@@ -87,14 +87,14 @@ let handle_client handle_request sock rd wr =
             Body.drain body >>| fun () -> Ivar.fill_if_empty finished ()
         | `Response (req, body, (res, res_body)) ->
             (* There are scenarios if a client leaves before consuming the full response,
-            we might have a reference to an async Pipe that doesn't get drained.
+               we might have a reference to an async Pipe that doesn't get drained.
 
-               Not draining or closing a pipe can lead to issues if its holding a resource like
-               a file handle as those resources will never be closed, leading to a leak.
+                  Not draining or closing a pipe can lead to issues if its holding a resource like
+                  a file handle as those resources will never be closed, leading to a leak.
 
-               Async writers have a promise that's fulfilled whenever they are closed,
-               so we can use it to schedule a close operation on the stream to ensure that we
-               don't leave a stream open if the underlying channels are closed. *)
+                  Async writers have a promise that's fulfilled whenever they are closed,
+                  so we can use it to schedule a close operation on the stream to ensure that we
+                  don't leave a stream open if the underlying channels are closed. *)
             (match res_body with
             | `Empty | `String _ | `Strings _ -> ()
             | `Pipe stream ->

cohttp-async/test/test_async_integration.ml

@@ -111,7 +111,8 @@ let ts =
             ("Pipe with empty strings", Pipe.of_list [ ""; ""; "" ], true);
           ]
         in
-        Deferred.List.iter ~how:`Sequential tests ~f:(fun (msg, pipe, expected) ->
+        Deferred.List.iter ~how:`Sequential tests
+          ~f:(fun (msg, pipe, expected) ->
             is_empty (`Pipe pipe) >>| fun real ->
             assert_equal ~msg expected real)
         >>= fun () ->

cohttp-lwt-unix/bin/dune

@@ -1,14 +1,6 @@
 (executables
  (names cohttp_curl_lwt cohttp_proxy_lwt cohttp_server_lwt)
- (libraries
-  cohttp-lwt-unix
-  cohttp_server
-  logs
-  logs.lwt
-  logs.fmt
-  logs.cli
-  cmdliner
-  conduit-lwt
-  fmt.tty)
+ (libraries cohttp-lwt-unix cohttp_server logs logs.lwt logs.fmt logs.cli
+   cmdliner conduit-lwt fmt.tty)
  (package cohttp-lwt-unix)
  (public_names cohttp-curl-lwt cohttp-proxy-lwt cohttp-server-lwt))

examples/async/dune

@@ -1,6 +1,6 @@
 (executables
  (names hello_world receive_post s3_cp)
- (libraries mirage-crypto cohttp-async base async_kernel core_unix.command_unix))
+ (libraries digestif.c cohttp-async base async_kernel core_unix.command_unix))
 
 (alias
  (name runtest)

examples/async/s3_cp.ml

@@ -44,7 +44,6 @@ open Core
 open Async
 open Cohttp
 open Cohttp_async
-
 module Time = Time_float
 
 let ksrt (k, _) (k', _) = String.compare k k'
@@ -83,18 +82,6 @@ module Compat = struct
     let x = Char.to_int c in
     (hexa.[x lsr 4], hexa.[x land 0xf])
 
-  let cstruct_to_hex_string cs =
-    let open Cstruct in
-    let n = cs.len in
-    let buf = Buffer.create (n * 2) in
-    for i = 0 to n - 1 do
-      let c = cs.buffer.{cs.off + i} in
-      let x, y = of_char c in
-      Buffer.add_char buf x;
-      Buffer.add_char buf y
-    done;
-    Buffer.contents buf
-
   let encode_query_string uri =
     (* Sort and encode query string.
        Note that AWS wants null keys to have '=' for all keys.
@@ -170,8 +157,7 @@ module Auth = struct
 
   let digest s =
     (* string -> sha256 as a hex string *)
-    Mirage_crypto.Hash.(digest `SHA256 (Cstruct.of_string s))
-    |> Compat.cstruct_to_hex_string
+    Digestif.SHA256.(digest_string s |> to_hex)
 
   let make_amz_headers ?body time =
     (* Return x-amz-date and x-amz-sha256 headers *)
@@ -239,16 +225,12 @@ module Auth = struct
     Printf.sprintf "AWS4-HMAC-SHA256\n%s\n%s\n%s" time_str scope_str hashed_req
 
   let make_signing_key ?date ~region ~service ~secret_access_key () =
-    let mac k v =
-      Mirage_crypto.Hash.(mac `SHA256 ~key:k (Cstruct.of_string v))
-    in
+    let mac k v = Digestif.SHA256.(hmac_string ~key:k v |> to_raw_string) in
     let date' =
       match date with None -> Date.today ~zone:Time.Zone.utc | Some d -> d
     in
     let date_str = Date.to_string_iso8601_basic date' in
-    let date_key =
-      mac (Cstruct.of_string ("AWS4" ^ secret_access_key)) date_str
-    in
+    let date_key = mac ("AWS4" ^ secret_access_key) date_str in
     let date_region_key = mac date_key (string_of_region region) in
     let date_region_service_key =
       mac date_region_key (string_of_service service)
@@ -278,14 +260,12 @@ module Auth = struct
         (string_of_service service)
     in
     let signature =
-      Mirage_crypto.Hash.(
-        mac `SHA256 ~key:signing_key (Cstruct.of_string string_to_sign))
+      Digestif.SHA256.(hmac_string ~key:signing_key string_to_sign |> to_hex)
     in
     let auth_header =
       Printf.sprintf
         "AWS4-HMAC-SHA256 Credential=%s,SignedHeaders=%s,Signature=%s" creds
-        signed_headers
-        (Compat.cstruct_to_hex_string signature)
+        signed_headers signature
     in
     [ ("Authorization", auth_header) ]
 end