feat(cli): command router, real IMAP wiring, flag-based admin

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-06-22 00:09:38 +01:00
parent e1d86dc587
commit e1e5f245e1
4 changed files with 345 additions and 2 deletions
+2 -2
View File
@@ -4,6 +4,7 @@ import (
"fmt"
"os"
"git.dcglab.co.uk/steve/emcli/internal/cli"
"git.dcglab.co.uk/steve/emcli/internal/version"
)
@@ -12,6 +13,5 @@ func main() {
fmt.Println(version.String)
return
}
fmt.Fprintln(os.Stderr, "emcli: no command given")
os.Exit(2)
os.Exit(cli.Run(os.Args[1:], os.Stdout, os.Stderr))
}
+130
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@@ -0,0 +1,130 @@
package cli
import (
"flag"
"fmt"
"io"
"git.dcglab.co.uk/steve/emcli/internal/store"
)
// runAccount handles `account add|list`. Human-readable output (never JSON).
func runAccount(args []string, out, errOut io.Writer) int {
if len(args) == 0 {
fmt.Fprintln(errOut, "usage: emcli account <add|list>")
return 2
}
sub, rest := args[0], args[1:]
st, err := openStore()
if err != nil {
fmt.Fprintf(errOut, "emcli: %v\n", err)
return 1
}
defer st.Close()
switch sub {
case "add":
fs := flag.NewFlagSet("account add", flag.ContinueOnError)
fs.SetOutput(errOut)
name := fs.String("name", "", "account name")
mode := fs.String("mode", "RO", "RO|RW")
host := fs.String("imap-host", "", "IMAP host")
port := fs.Int("imap-port", 993, "IMAP port")
sec := fs.String("imap-security", "tls", "tls|starttls")
user := fs.String("username", "", "login username")
pass := fs.String("password", "", "login password")
subj := fs.String("subject-regex", "", "inbound subject filter")
wlIn := fs.Bool("whitelist-in", false, "enable inbound whitelist")
wlOut := fs.Bool("whitelist-out", false, "enable outbound whitelist")
backlog := fs.Bool("process-backlog", false, "treat existing mail as new")
if err := fs.Parse(rest); err != nil {
return 2
}
if *name == "" || *host == "" || *user == "" {
fmt.Fprintln(errOut, "name, imap-host, and username are required")
return 2
}
_, err := st.AddAccount(store.Account{
Name: *name, Mode: *mode, IMAPHost: *host, IMAPPort: *port, IMAPSecurity: *sec,
AuthType: "password", Username: *user, Password: *pass,
SubjectRegex: *subj, WhitelistInEnabled: *wlIn, WhitelistOutEnabled: *wlOut,
ProcessBacklog: *backlog,
})
if err != nil {
fmt.Fprintf(errOut, "add account: %v\n", err)
return 1
}
fmt.Fprintf(out, "account %q added (%s)\n", *name, *mode)
return 0
case "list":
accs, err := st.ListAccounts()
if err != nil {
fmt.Fprintf(errOut, "list: %v\n", err)
return 1
}
fmt.Fprintf(out, "%-16s %-4s %-28s %s\n", "NAME", "MODE", "IMAP", "USER")
for _, a := range accs {
fmt.Fprintf(out, "%-16s %-4s %-28s %s\n",
a.Name, a.Mode, fmt.Sprintf("%s:%d", a.IMAPHost, a.IMAPPort), a.Username)
}
return 0
default:
fmt.Fprintf(errOut, "unknown account subcommand %q\n", sub)
return 2
}
}
// runWhitelist handles `whitelist <in|out> add --account NAME --address A`.
func runWhitelist(args []string, out, errOut io.Writer) int {
if len(args) < 2 {
fmt.Fprintln(errOut, "usage: emcli whitelist <in|out> <add|remove|list> [flags]")
return 2
}
dir := store.Direction(args[0])
sub, rest := args[1], args[2:]
fs := flag.NewFlagSet("whitelist", flag.ContinueOnError)
fs.SetOutput(errOut)
account := fs.String("account", "", "account name")
address := fs.String("address", "", "email or @domain")
if err := fs.Parse(rest); err != nil {
return 2
}
if *account == "" {
fmt.Fprintln(errOut, "--account is required")
return 2
}
st, err := openStore()
if err != nil {
fmt.Fprintf(errOut, "emcli: %v\n", err)
return 1
}
defer st.Close()
switch sub {
case "add":
if err := st.AddWhitelist(*account, dir, *address); err != nil {
fmt.Fprintf(errOut, "add: %v\n", err)
return 1
}
fmt.Fprintf(out, "added %s to %s whitelist of %q\n", *address, dir, *account)
case "remove":
if err := st.RemoveWhitelist(*account, dir, *address); err != nil {
fmt.Fprintf(errOut, "remove: %v\n", err)
return 1
}
fmt.Fprintf(out, "removed %s\n", *address)
case "list":
addrs, err := st.ListWhitelist(*account, dir)
if err != nil {
fmt.Fprintf(errOut, "list: %v\n", err)
return 1
}
for _, a := range addrs {
fmt.Fprintln(out, a)
}
default:
fmt.Fprintf(errOut, "unknown whitelist subcommand %q\n", sub)
return 2
}
return 0
}
+157
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@@ -0,0 +1,157 @@
package cli
import (
"flag"
"fmt"
"io"
"strconv"
"strings"
"time"
"git.dcglab.co.uk/steve/emcli/internal/crypto"
"git.dcglab.co.uk/steve/emcli/internal/mail"
"git.dcglab.co.uk/steve/emcli/internal/store"
)
func realMailer(acc store.Account) (Mailer, error) {
c, err := mail.Dial(mail.IMAPConfig{
Host: acc.IMAPHost, Port: acc.IMAPPort, Security: acc.IMAPSecurity,
Username: acc.Username, Password: acc.Password,
})
if err != nil {
return nil, err
}
return c, nil
}
// openStore loads the key and opens the DB, returning a human-readable error string.
func openStore() (*store.Store, error) {
key, err := crypto.KeyFromEnv()
if err != nil {
return nil, err
}
path, err := store.DefaultDBPath()
if err != nil {
return nil, err
}
return store.Open(path, key)
}
func newDepsLive(st *store.Store, out io.Writer) Deps {
return Deps{Store: st, Dial: realMailer, Now: time.Now, Out: out}
}
// Run routes a command line and returns an exit code.
func Run(args []string, out, errOut io.Writer) int {
if len(args) == 0 {
fmt.Fprintln(errOut, "emcli: no command given")
return 2
}
cmd, rest := args[0], args[1:]
switch cmd {
case "list", "get", "search", "ack":
return runAgent(cmd, rest, out, errOut)
case "account":
return runAccount(rest, out, errOut)
case "whitelist":
return runWhitelist(rest, out, errOut)
default:
fmt.Fprintf(errOut, "emcli: unknown command %q\n", cmd)
return 2
}
}
// runAgent handles JSON-emitting commands. Errors are emitted as JSON envelopes.
func runAgent(cmd string, args []string, out, errOut io.Writer) int {
fs := flag.NewFlagSet(cmd, flag.ContinueOnError)
fs.SetOutput(errOut)
account := fs.String("account", "", "account name")
folder := fs.String("folder", "INBOX", "folder/mailbox")
onlyNew := fs.Bool("new", false, "only new (unacked) messages")
limit := fs.Int("limit", 50, "max results (cap 500)")
uid := fs.Uint("uid", 0, "message UID (get)")
before := fs.Uint("before", 0, "list: UID cursor, older than")
since := fs.Uint("since", 0, "list: UID cursor, newer than")
from := fs.String("from", "", "search: sender")
subjectContains := fs.String("subject-contains", "", "search: subject substring")
text := fs.String("text", "", "search: full-text")
sinceDate := fs.String("since-date", "", "search: RFC3339 date lower bound")
beforeDate := fs.String("before-date", "", "search: RFC3339 date upper bound")
ackUIDs := fs.String("uid-list", "", "ack: comma-separated UIDs")
if err := fs.Parse(args); err != nil {
_ = Failure(CodeUsage, err.Error()).Write(out)
return 2
}
if *limit > 500 {
*limit = 500
}
if *account == "" {
_ = Failure(CodeUsage, "--account is required").Write(out)
return 2
}
st, err := openStore()
if err != nil {
_ = Failure(CodeConfig, err.Error()).Write(out)
return 1
}
defer st.Close()
_, _ = st.PurgeAudit(time.Now())
d := newDepsLive(st, out)
switch cmd {
case "list":
if err := ListCmd(d, *account, *folder, *onlyNew, u32(*before), u32(*since), *limit); err != nil {
return 1
}
case "get":
if *uid == 0 {
_ = Failure(CodeUsage, "--uid is required").Write(out)
return 2
}
if err := GetCmd(d, *account, *folder, u32(*uid)); err != nil {
return 1
}
case "search":
sc := mail.SearchCriteria{From: *from, SubjectContains: *subjectContains, Text: *text}
if *sinceDate != "" {
if tm, err := time.Parse(time.RFC3339, *sinceDate); err == nil {
sc.Since = tm
}
}
if *beforeDate != "" {
if tm, err := time.Parse(time.RFC3339, *beforeDate); err == nil {
sc.Before = tm
}
}
if err := SearchCmd(d, *account, *folder, sc, *limit); err != nil {
return 1
}
case "ack":
uids, err := parseUIDList(*ackUIDs)
if err != nil {
_ = Failure(CodeUsage, err.Error()).Write(out)
return 2
}
if err := AckCmd(d, *account, *folder, uids); err != nil {
return 1
}
}
return 0
}
func u32(u uint) uint32 { return uint32(u) }
func parseUIDList(s string) ([]uint32, error) {
if strings.TrimSpace(s) == "" {
return nil, fmt.Errorf("--uid-list is required")
}
var out []uint32
for _, part := range strings.Split(s, ",") {
n, err := strconv.ParseUint(strings.TrimSpace(part), 10, 32)
if err != nil {
return nil, fmt.Errorf("invalid uid %q", part)
}
out = append(out, uint32(n))
}
return out, nil
}
+56
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@@ -0,0 +1,56 @@
package cli
import (
"bytes"
"encoding/json"
"strings"
"testing"
)
func TestRunUnknownCommand(t *testing.T) {
var out, errOut bytes.Buffer
code := Run([]string{"frobnicate"}, &out, &errOut)
if code == 0 {
t.Fatal("unknown command should be non-zero exit")
}
if !strings.Contains(errOut.String(), "unknown") {
t.Fatalf("stderr should mention unknown command: %q", errOut.String())
}
}
func TestRunVersionIsJSONForAgentButTextHere(t *testing.T) {
// `account list` with no DB key should fail closed with a usage/config error,
// proving the key check happens before any DB work.
var out, errOut bytes.Buffer
t.Setenv("EMCLI_KEY", "")
code := Run([]string{"account", "list"}, &out, &errOut)
if code == 0 {
t.Fatal("missing EMCLI_KEY must fail")
}
if !strings.Contains(out.String()+errOut.String(), "EMCLI_KEY") {
t.Fatalf("should mention EMCLI_KEY, got out=%q err=%q", out.String(), errOut.String())
}
}
func TestListUsageErrorIsJSON(t *testing.T) {
// Agent command with a missing required flag emits a JSON error envelope.
var out, errOut bytes.Buffer
t.Setenv("EMCLI_KEY", b64Key())
t.Setenv("EMCLI_DB", "") // default path is fine; command fails before connecting
code := Run([]string{"list"}, &out, &errOut) // missing --account
if code == 0 {
t.Fatal("missing --account should be non-zero")
}
var env map[string]any
if err := json.Unmarshal(out.Bytes(), &env); err != nil {
t.Fatalf("agent usage error must be JSON, got %q", out.String())
}
if env["error"] != true {
t.Fatalf("want error envelope: %v", env)
}
}
func b64Key() string {
// 32 zero bytes, base64.
return "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
}