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Email members their git + mailbox credentials on provisioning (#57)

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* feat(files): SFTP member storage — private workspaces + shared public area + mgmt TUI

Implements M4 (Files). A fully virtual Go SFTP server (pkg/sftp + crypto/ssh,
no OS users) wired as an "sftp" subsystem on the existing :22 wish listener, so
members reach their files with their login key:

    sftp files@bbs.profullstack.com     # scp/rsync ride the same endpoint

Identity is the SSH key (the username is conventional/ignored). Two areas per
session: a private, quota-limited /me workspace and a single shared public file
area /public (old-school BBS file area; world-read, members-only write by
default, operator-moderated). This reverses the old NG1 "no sharing" boundary in
favour of one sanctioned, inspectable sharing surface (PRD §9.3 amended).

internal/files:
- backend.go  service, layout, quota/usage, live-session registry, operator API
- fs.go       per-session virtual FS; resolve() is the single security
              chokepoint (area confinement + symlink-escape guard) + pkg/sftp
              request handlers
- server.go   subsystem handler: key auth -> member session -> request server,
              with byte metering and force-disconnect
- tui.go      in-BBS member browser (hub plugin "Files")
- admin.go    operator management TUI: sessions, workspaces/quotas, public area

Operator console: ssh sftp@<host> (allowlist-gated; sftpadmin@/filesadmin@
aliases) — list/disconnect sessions, set per-user quotas, revoke SFTP access,
toggle public write, moderate the public area.

store: files_access (per-user quota override + revoked) and files_settings
(public-write mode) tables + methods. main.go wiring guarded by AGENTBBS_FILES
(+ AGENTBBS_FILES_QUOTA_MB, default 1 GiB). Route names reserved.

Tests (incl -race): path traversal/confinement, symlink-escape rejection,
public-write ACL, quota enforcement, usage accounting, and an end-to-end run
against a real SFTP client. Docs: docs/files.md; PRD §5.3/§5.3.1/§9.3 + README
updated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* Add notify-creds subcommand to (re)email members git + mailbox creds

`agentbbs notify-creds` backfills credential emails to verified members
who signed up before the git/mailbox welcome emails existed.

- git (all verified): forgejo.EnsureUserReset resets each account to a
  fresh one-time password (must-change) and emails the web login link,
  username, and password. New method since the original one-time
  password is not recoverable for existing accounts.
- mailbox (all verified): ensures the forwardemail alias and emails the
  address + webmail link.
- Preview by default; --send executes. --git/--mail/--user filters.
  Refuses --send without SMTP; warns+skips when Forgejo/forwardemail
  are unconfigured.

Also folds in the welcome-email functions (gitWelcomeEmailBody,
mailWelcomeEmailBody, EnsureUser password return, provisionGit/
ensurePremium sends) that this builds on. README ops + forgejo tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Anthony Ettinger 2026-06-23 03:48:11 -07:00 • committed by GitHub
parent 7c794dcf79
commit ce0758b0ec
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5 changed files with 356 additions and 20 deletions
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80
internal/forgejo/forgejo.go
View file

@ -47,26 +47,34 @@ func ConfigFromEnv() Config {
// Configured reports whether accounts can actually be provisioned.
func (c Config) Configured() bool { return c.BaseURL != "" && c.Token != "" }
// LoginURL is the web sign-in page members are pointed at in their welcome
// email, e.g. https://git.profullstack.com/user/login.
func (c Config) LoginURL() string {
return strings.TrimRight(c.BaseURL, "/") + "/user/login"
}
// EnsureUser creates a Forgejo account for username (forwarding to email) if it
// does not already exist. It is idempotent: created is false when the account
// was already present. New accounts are created with must_change_password — git
// access is via SSH keys, so the generated password is never used interactively.
func (c Config) EnsureUser(username, email string) (created bool, err error) {
// does not already exist. It is idempotent: created is false (and password "")
// when the account was already present. New accounts get a generated temporary
// password with must_change_password set; the caller emails it to the member so
// they can sign in to the web UI once and set their own. Git over SSH still uses
// their registered key.
func (c Config) EnsureUser(username, email string) (created bool, password string, err error) {
if !c.Configured() {
return false, fmt.Errorf("forgejo not configured")
return false, "", fmt.Errorf("forgejo not configured")
}
exists, err := c.userExists(username)
if err != nil {
return false, err
return false, "", err
}
if exists {
return false, nil
return false, "", nil
}
pw, err := randomPassword()
if err != nil {
return false, err
return false, "", err
}
body, _ := json.Marshal(map[string]any{
"username": username,
@ -76,12 +84,62 @@ func (c Config) EnsureUser(username, email string) (created bool, err error) {
})
status, resp, err := c.do(http.MethodPost, "/admin/users", body)
if err != nil {
return false, err
return false, "", err
}
if status < 200 || status >= 300 {
return false, fmt.Errorf("forgejo create user %q: %d: %s", username, status, truncate(resp, 200))
return false, "", fmt.Errorf("forgejo create user %q: %d: %s", username, status, truncate(resp, 200))
}
return true, nil
return true, pw, nil
}
// EnsureUserReset creates the account if missing, or resets an existing
// account's password to a fresh temporary one with must_change_password set.
// Unlike EnsureUser it always returns a usable password — even for accounts
// that already exist (whose original one-time password we no longer hold).
// created reports whether the account was newly made. Used by the notify-creds
// re-send so every member receives working web credentials.
func (c Config) EnsureUserReset(username, email string) (created bool, password string, err error) {
if !c.Configured() {
return false, "", fmt.Errorf("forgejo not configured")
}
exists, err := c.userExists(username)
if err != nil {
return false, "", err
}
pw, err := randomPassword()
if err != nil {
return false, "", err
}
if !exists {
body, _ := json.Marshal(map[string]any{
"username": username,
"email": email,
"password": pw,
"must_change_password": true,
})
status, resp, err := c.do(http.MethodPost, "/admin/users", body)
if err != nil {
return false, "", err
}
if status < 200 || status >= 300 {
return false, "", fmt.Errorf("forgejo create user %q: %d: %s", username, status, truncate(resp, 200))
}
return true, pw, nil
}
// Reset the existing account's password. login_name/source_id are optional
// for local accounts in current Forgejo, so we send only the fields we change.
body, _ := json.Marshal(map[string]any{
"password": pw,
"must_change_password": true,
})
status, resp, err := c.do(http.MethodPatch, "/admin/users/"+username, body)
if err != nil {
return false, "", err
}
if status < 200 || status >= 300 {
return false, "", fmt.Errorf("forgejo reset user %q: %d: %s", username, status, truncate(resp, 200))
}
return false, pw, nil
}
// EnsureKey registers an SSH public key on the member's Forgejo account so the

87
internal/forgejo/forgejo_test.go
View file

@ -20,7 +20,7 @@ func TestConfiguredRequiresURLAndToken(t *testing.T) {
}
func TestEnsureUserNoOpWhenUnconfigured(t *testing.T) {
if _, err := (Config{}).EnsureUser("alice", "a@x.com"); err == nil {
if _, _, err := (Config{}).EnsureUser("alice", "a@x.com"); err == nil {
t.Fatal("expected error when unconfigured")
}
}
@ -52,13 +52,19 @@ func TestEnsureUserCreatesWhenMissing(t *testing.T) {
defer srv.Close()
c := Config{BaseURL: srv.URL, Token: "secret"}
created, err := c.EnsureUser("alice", "a@x.com")
created, password, err := c.EnsureUser("alice", "a@x.com")
if err != nil {
t.Fatalf("EnsureUser: %v", err)
}
if !created {
t.Fatal("expected created=true")
}
if password == "" {
t.Fatal("expected a generated temporary password for a new account")
}
if password != got.body["password"] {
t.Errorf("returned password %q does not match the one sent to forgejo %v", password, got.body["password"])
}
if !got.lookup || !got.create {
t.Fatalf("expected lookup+create, got %+v", got)
}
@ -70,6 +76,78 @@ func TestEnsureUserCreatesWhenMissing(t *testing.T) {
}
}
func TestEnsureUserResetCreatesWhenMissing(t *testing.T) {
var posted bool
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch {
case r.Method == http.MethodGet && r.URL.Path == "/api/v1/users/alice":
w.WriteHeader(http.StatusNotFound)
case r.Method == http.MethodPost && r.URL.Path == "/api/v1/admin/users":
posted = true
w.WriteHeader(http.StatusCreated)
_, _ = w.Write([]byte(`{"id":1}`))
default:
t.Errorf("unexpected %s %s", r.Method, r.URL.Path)
w.WriteHeader(http.StatusTeapot)
}
}))
defer srv.Close()
c := Config{BaseURL: srv.URL, Token: "secret"}
created, password, err := c.EnsureUserReset("alice", "a@x.com")
if err != nil {
t.Fatalf("EnsureUserReset: %v", err)
}
if !created || password == "" || !posted {
t.Fatalf("expected created+password+POST, got created=%v pw=%q posted=%v", created, password, posted)
}
}
func TestEnsureUserResetPatchesWhenExists(t *testing.T) {
var patched bool
var body map[string]any
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch {
case r.Method == http.MethodGet && r.URL.Path == "/api/v1/users/alice":
w.WriteHeader(http.StatusOK)
_, _ = w.Write([]byte(`{"id":1}`))
case r.Method == http.MethodPatch && r.URL.Path == "/api/v1/admin/users/alice":
patched = true
_ = json.NewDecoder(r.Body).Decode(&body)
w.WriteHeader(http.StatusOK)
_, _ = w.Write([]byte(`{"id":1}`))
case r.Method == http.MethodPost:
t.Error("must not create when the account already exists")
w.WriteHeader(http.StatusTeapot)
default:
t.Errorf("unexpected %s %s", r.Method, r.URL.Path)
w.WriteHeader(http.StatusTeapot)
}
}))
defer srv.Close()
c := Config{BaseURL: srv.URL, Token: "secret"}
created, password, err := c.EnsureUserReset("alice", "a@x.com")
if err != nil {
t.Fatalf("EnsureUserReset: %v", err)
}
if created {
t.Fatal("expected created=false for existing account")
}
if password == "" {
t.Fatal("expected a fresh password even for an existing account")
}
if !patched {
t.Fatal("expected a PATCH to reset the password")
}
if body["password"] != password {
t.Errorf("returned password %q does not match the one sent %v", password, body["password"])
}
if body["must_change_password"] != true {
t.Errorf("expected must_change_password=true, got %v", body["must_change_password"])
}
}
func TestEnsureUserNoOpWhenExists(t *testing.T) {
created := false
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@ -82,13 +160,16 @@ func TestEnsureUserNoOpWhenExists(t *testing.T) {
defer srv.Close()
c := Config{BaseURL: srv.URL, Token: "secret"}
got, err := c.EnsureUser("alice", "a@x.com")
got, password, err := c.EnsureUser("alice", "a@x.com")
if err != nil {
t.Fatalf("EnsureUser: %v", err)
}
if got {
t.Fatal("expected created=false for existing user")
}
if password != "" {
t.Fatal("expected empty password when account already exists")
}
if created {
t.Fatal("must not POST when the user already exists")
}