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rose-ash/next/tests/discovery.sh
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fed-sx-m2: Step 10a — discovery primitives + 12 tests
New next/kernel/discovery.erl with the local-side webfinger
primitives per design §13.7:

  parse_acct/1(Bin) -> {ok, User, Host} | {error, _}
    Accepts <<acct:user@host>> (with prefix) or <<user@host>>
    (bare). Host preserves an optional :port suffix. Rejects
    empty user/host and missing @.

  parse_resource/1   alias for the webfinger ?resource= shape

  actor_url_for/2(User, Host)
    Synthesises <<http://<host>/actors/<user>>>. TLS / https
    is v3, gated on a TLS substrate Blocker.

  webfinger_body/3(User, Host, ActorUrl)
    Builds the RFC 7033 JSON body:
      {"subject":"acct:<user>@<host>",
       "links":[{"rel":"self",
                 "type":"application/activity+json",
                 "href":"<actor_url>"}]}
    Hand-rolled byte concatenation — no JSON BIF on this port.

Substrate gotcha re-confirmed: <<"acct:">> string literals
truncate to one byte on this port. "acct:" is spelled as
<<97,99,99,116,58>> in the implementation.

12/12 in next/tests/discovery.sh covering:
  - parse_acct prefixed + bare forms
  - host with :port preserved
  - reject empty user / missing @ / empty host
  - parse_resource alias
  - actor_url_for synthesis + port preservation
  - webfinger_body prefix shape + byte_size sanity

Step 10b (http_server route GET /.well-known/webfinger) and
Step 10c (peer-actor fetch via Step 5's lookup_or_fetch slot)
layer on top. 10c gates on Blockers #2 (native http-request
primitive missing).
2026-06-07 03:11:03 +00:00

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#!/usr/bin/env bash
# next/tests/discovery.sh — m2 Step 10a test.
#
# Local-side webfinger primitives: parse acct: URIs, synthesise
# actor URLs, build the RFC 7033 webfinger JSON body.
set -uo pipefail
cd "$(git rev-parse --show-toplevel)"
SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
echo "ERROR: sx_server.exe not found." >&2
exit 1
fi
VERBOSE="${1:-}"
PASS=0; FAIL=0; ERRORS=""
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
cat > "$TMPFILE" <<'EPOCHS'
(epoch 1)
(load "lib/erlang/tokenizer.sx")
(load "lib/erlang/parser.sx")
(load "lib/erlang/parser-core.sx")
(load "lib/erlang/parser-expr.sx")
(load "lib/erlang/parser-module.sx")
(load "lib/erlang/transpile.sx")
(load "lib/erlang/runtime.sx")
(load "lib/erlang/vm/dispatcher.sx")
(epoch 2)
(eval "(get (erlang-load-module (file-read \"next/kernel/discovery.erl\")) :name)")
(epoch 3)
(eval "(get (erlang-load-module (file-read \"next/kernel/http_server.erl\")) :name)")
;; parse_acct accepts the acct: prefix form
(epoch 10)
(eval "(get (erlang-eval-ast \"discovery:parse_acct(<<97,99,99,116,58,97,108,105,99,101,64,104,111,115,116>>) =:= {ok, <<97,108,105,99,101>>, <<104,111,115,116>>}\") :name)")
;; parse_acct accepts the bare form
(epoch 11)
(eval "(get (erlang-eval-ast \"discovery:parse_acct(<<97,108,105,99,101,64,104,111,115,116>>) =:= {ok, <<97,108,105,99,101>>, <<104,111,115,116>>}\") :name)")
;; parse_acct host with port
(epoch 12)
(eval "(get (erlang-eval-ast \"discovery:parse_acct(<<97,108,105,99,101,64,104,111,115,116,58,57,57,57,57>>) =:= {ok, <<97,108,105,99,101>>, <<104,111,115,116,58,57,57,57,57>>}\") :name)")
;; parse_acct rejects empty user
(epoch 13)
(eval "(get (erlang-eval-ast \"case discovery:parse_acct(<<64,104,111,115,116>>) of {error, _} -> true; _ -> false end\") :name)")
;; parse_acct rejects missing @
(epoch 14)
(eval "(get (erlang-eval-ast \"case discovery:parse_acct(<<97,108,105,99,101>>) of {error, _} -> true; _ -> false end\") :name)")
;; parse_acct rejects empty host
(epoch 15)
(eval "(get (erlang-eval-ast \"case discovery:parse_acct(<<97,108,105,99,101,64>>) of {error, _} -> true; _ -> false end\") :name)")
;; parse_resource is an alias for parse_acct
(epoch 16)
(eval "(get (erlang-eval-ast \"discovery:parse_resource(<<97,99,99,116,58,98,111,98,64,98,46,99,111,109>>) =:= {ok, <<98,111,98>>, <<98,46,99,111,109>>}\") :name)")
;; actor_url_for synthesises http://<host>/actors/<user>
(epoch 17)
(eval "(get (erlang-eval-ast \"discovery:actor_url_for(<<97,108,105,99,101>>, <<104,111,115,116>>) =:= <<104,116,116,112,58,47,47,104,111,115,116,47,97,99,116,111,114,115,47,97,108,105,99,101>>\") :name)")
;; actor_url_for preserves port in host
(epoch 18)
(eval "(get (erlang-eval-ast \"discovery:actor_url_for(<<98,111,98>>, <<104,58,57,57>>) =:= <<104,116,116,112,58,47,47,104,58,57,57,47,97,99,116,111,114,115,47,98,111,98>>\") :name)")
;; webfinger_body starts with {"subject":"acct:<user>@<host>" — http_server:match_prefix
(epoch 19)
(eval "(get (erlang-eval-ast \"B = discovery:webfinger_body(<<97,108,105,99,101>>, <<104,111,115,116>>, <<117,114,108>>), Pre = <<123,34,115,117,98,106,101,99,116,34,58,34,97,99,99,116,58,97,108,105,99,101,64,104,111,115,116,34>>, http_server:match_prefix(Pre, B) =/= nomatch\") :name)")
;; webfinger_body byte_size is at least subject+links length (sanity)
(epoch 20)
(eval "(get (erlang-eval-ast \"B = discovery:webfinger_body(<<97,108,105,99,101>>, <<104,111,115,116>>, <<117,114,108>>), byte_size(B) > 80\") :name)")
EPOCHS
OUTPUT=$(timeout 480 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
check() {
local epoch="$1" desc="$2" expected="$3"
local actual
actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
$0 ~ "^\\(ok-len " e " " { getline; print; exit }
$0 ~ "^\\(ok " e " " { print; exit }
$0 ~ "^\\(error " e " " { print; exit }
')
[ -z "$actual" ] && actual="<no output for epoch $epoch>"
if echo "$actual" | grep -qF -- "$expected"; then
PASS=$((PASS+1))
[ "$VERBOSE" = "-v" ] && echo " ok $desc"
else
FAIL=$((FAIL+1))
ERRORS+=" FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
"
fi
}
check 2 "discovery module loaded" "discovery"
check 10 "parse_acct prefixed" "true"
check 11 "parse_acct bare form" "true"
check 12 "parse_acct host with port" "true"
check 13 "parse_acct empty user -> error" "true"
check 14 "parse_acct missing @ -> error" "true"
check 15 "parse_acct empty host -> error" "true"
check 16 "parse_resource alias" "true"
check 17 "actor_url_for synthesises" "true"
check 18 "actor_url_for preserves port" "true"
check 19 "webfinger_body subject prefix" "true"
check 20 "webfinger_body has body bytes" "true"
TOTAL=$((PASS+FAIL))
if [ $FAIL -eq 0 ]; then
echo "ok $PASS/$TOTAL next/tests/discovery.sh passed"
else
echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
echo "$ERRORS"
fi
[ $FAIL -eq 0 ]