Introduce base plugin

This plugin offers base IMAP/SMTP functionality.

References: https://todo.sr.ht/~sircmpwn/koushin/39

1 files changed, 0 insertions, 288 deletions

diff --git a/handlers.go b/handlers.go
deleted file mode 100644
index f53085c..0000000
--- a/handlers.go
+++ /dev/null
@@ -1,288 +0,0 @@
-package koushin
-
-import (
-	"fmt"
-	"io/ioutil"
-	"mime"
-	"net/http"
-	"net/url"
-	"strconv"
-	"strings"
-
-	"github.com/emersion/go-imap"
-	imapclient "github.com/emersion/go-imap/client"
-	"github.com/emersion/go-message"
-	"github.com/emersion/go-sasl"
-	"github.com/labstack/echo/v4"
-)
-
-type MailboxRenderData struct {
-	RenderData
-	Mailbox            *imap.MailboxStatus
-	Mailboxes          []*imap.MailboxInfo
-	Messages           []imapMessage
-	PrevPage, NextPage int
-}
-
-func handleGetMailbox(ectx echo.Context) error {
-	ctx := ectx.(*Context)
-
-	mboxName, err := url.PathUnescape(ctx.Param("mbox"))
-	if err != nil {
-		return echo.NewHTTPError(http.StatusBadRequest, err)
-	}
-
-	page := 0
-	if pageStr := ctx.QueryParam("page"); pageStr != "" {
-		var err error
-		if page, err = strconv.Atoi(pageStr); err != nil || page < 0 {
-			return echo.NewHTTPError(http.StatusBadRequest, "invalid page index")
-		}
-	}
-
-	var mailboxes []*imap.MailboxInfo
-	var msgs []imapMessage
-	var mbox *imap.MailboxStatus
-	err = ctx.Session.Do(func(c *imapclient.Client) error {
-		var err error
-		if mailboxes, err = listMailboxes(c); err != nil {
-			return err
-		}
-		if msgs, err = listMessages(c, mboxName, page); err != nil {
-			return err
-		}
-		mbox = c.Mailbox()
-		return nil
-	})
-	if err != nil {
-		return err
-	}
-
-	prevPage, nextPage := -1, -1
-	if page > 0 {
-		prevPage = page - 1
-	}
-	if (page+1)*messagesPerPage < int(mbox.Messages) {
-		nextPage = page + 1
-	}
-
-	return ctx.Render(http.StatusOK, "mailbox.html", &MailboxRenderData{
-		RenderData: *NewRenderData(ctx),
-		Mailbox:    mbox,
-		Mailboxes:  mailboxes,
-		Messages:   msgs,
-		PrevPage:   prevPage,
-		NextPage:   nextPage,
-	})
-}
-
-func handleLogin(ectx echo.Context) error {
-	ctx := ectx.(*Context)
-
-	username := ctx.FormValue("username")
-	password := ctx.FormValue("password")
-	if username != "" && password != "" {
-		s, err := ctx.Server.Sessions.Put(username, password)
-		if err != nil {
-			if _, ok := err.(AuthError); ok {
-				return ctx.Render(http.StatusOK, "login.html", nil)
-			}
-			return fmt.Errorf("failed to put connection in pool: %v", err)
-		}
-		ctx.SetSession(s)
-
-		return ctx.Redirect(http.StatusFound, "/mailbox/INBOX")
-	}
-
-	return ctx.Render(http.StatusOK, "login.html", NewRenderData(ctx))
-}
-
-func handleLogout(ectx echo.Context) error {
-	ctx := ectx.(*Context)
-
-	ctx.Session.Close()
-	ctx.SetSession(nil)
-	return ctx.Redirect(http.StatusFound, "/login")
-}
-
-type MessageRenderData struct {
-	RenderData
-	Mailbox     *imap.MailboxStatus
-	Message     *imapMessage
-	Body        string
-	PartPath    string
-	MailboxPage int
-}
-
-func handleGetPart(ctx *Context, raw bool) error {
-	mboxName, uid, err := parseMboxAndUid(ctx.Param("mbox"), ctx.Param("uid"))
-	if err != nil {
-		return echo.NewHTTPError(http.StatusBadRequest, err)
-	}
-	partPathString := ctx.QueryParam("part")
-	partPath, err := parsePartPath(partPathString)
-	if err != nil {
-		return echo.NewHTTPError(http.StatusBadRequest, err)
-	}
-
-	var msg *imapMessage
-	var part *message.Entity
-	var mbox *imap.MailboxStatus
-	err = ctx.Session.Do(func(c *imapclient.Client) error {
-		var err error
-		msg, part, err = getMessagePart(c, mboxName, uid, partPath)
-		mbox = c.Mailbox()
-		return err
-	})
-	if err != nil {
-		return err
-	}
-
-	mimeType, _, err := part.Header.ContentType()
-	if err != nil {
-		return fmt.Errorf("failed to parse part Content-Type: %v", err)
-	}
-	if len(partPath) == 0 {
-		mimeType = "message/rfc822"
-	}
-
-	if raw {
-		disp, dispParams, _ := part.Header.ContentDisposition()
-		filename := dispParams["filename"]
-
-		// TODO: set Content-Length if possible
-
-		if !strings.EqualFold(mimeType, "text/plain") || strings.EqualFold(disp, "attachment") {
-			dispParams := make(map[string]string)
-			if filename != "" {
-				dispParams["filename"] = filename
-			}
-			disp := mime.FormatMediaType("attachment", dispParams)
-			ctx.Response().Header().Set("Content-Disposition", disp)
-		}
-		return ctx.Stream(http.StatusOK, mimeType, part.Body)
-	}
-
-	var body string
-	if strings.HasPrefix(strings.ToLower(mimeType), "text/") {
-		b, err := ioutil.ReadAll(part.Body)
-		if err != nil {
-			return fmt.Errorf("failed to read part body: %v", err)
-		}
-		body = string(b)
-	}
-
-	return ctx.Render(http.StatusOK, "message.html", &MessageRenderData{
-		RenderData:  *NewRenderData(ctx),
-		Mailbox:     mbox,
-		Message:     msg,
-		Body:        body,
-		PartPath:    partPathString,
-		MailboxPage: int(mbox.Messages-msg.SeqNum) / messagesPerPage,
-	})
-}
-
-type ComposeRenderData struct {
-	RenderData
-	Message *OutgoingMessage
-}
-
-func handleCompose(ectx echo.Context) error {
-	ctx := ectx.(*Context)
-
-	var msg OutgoingMessage
-	if strings.ContainsRune(ctx.Session.username, '@') {
-		msg.From = ctx.Session.username
-	}
-
-	if ctx.Request().Method == http.MethodGet && ctx.Param("uid") != "" {
-		// This is a reply
-		mboxName, uid, err := parseMboxAndUid(ctx.Param("mbox"), ctx.Param("uid"))
-		if err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest, err)
-		}
-		partPath, err := parsePartPath(ctx.QueryParam("part"))
-		if err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest, err)
-		}
-
-		var inReplyTo *imapMessage
-		var part *message.Entity
-		err = ctx.Session.Do(func(c *imapclient.Client) error {
-			var err error
-			inReplyTo, part, err = getMessagePart(c, mboxName, uid, partPath)
-			return err
-		})
-		if err != nil {
-			return err
-		}
-
-		mimeType, _, err := part.Header.ContentType()
-		if err != nil {
-			return fmt.Errorf("failed to parse part Content-Type: %v", err)
-		}
-
-		if !strings.HasPrefix(strings.ToLower(mimeType), "text/") {
-			err := fmt.Errorf("cannot reply to \"%v\" part", mimeType)
-			return echo.NewHTTPError(http.StatusBadRequest, err)
-		}
-
-		msg.Text, err = quote(part.Body)
-		if err != nil {
-			return err
-		}
-
-		msg.InReplyTo = inReplyTo.Envelope.MessageId
-		// TODO: populate From from known user addresses and inReplyTo.Envelope.To
-		replyTo := inReplyTo.Envelope.ReplyTo
-		if len(replyTo) == 0 {
-			replyTo = inReplyTo.Envelope.From
-		}
-		if len(replyTo) > 0 {
-			msg.To = make([]string, len(replyTo))
-			for i, to := range replyTo {
-				msg.To[i] = to.Address()
-			}
-		}
-		msg.Subject = inReplyTo.Envelope.Subject
-		if !strings.HasPrefix(strings.ToLower(msg.Subject), "re:") {
-			msg.Subject = "Re: " + msg.Subject
-		}
-	}
-
-	if ctx.Request().Method == http.MethodPost {
-		msg.From = ctx.FormValue("from")
-		msg.To = parseAddressList(ctx.FormValue("to"))
-		msg.Subject = ctx.FormValue("subject")
-		msg.Text = ctx.FormValue("text")
-		msg.InReplyTo = ctx.FormValue("in_reply_to")
-
-		c, err := ctx.Server.connectSMTP()
-		if err != nil {
-			return err
-		}
-		defer c.Close()
-
-		auth := sasl.NewPlainClient("", ctx.Session.username, ctx.Session.password)
-		if err := c.Auth(auth); err != nil {
-			return echo.NewHTTPError(http.StatusForbidden, err)
-		}
-
-		if err := sendMessage(c, &msg); err != nil {
-			return err
-		}
-
-		if err := c.Quit(); err != nil {
-			return fmt.Errorf("QUIT failed: %v", err)
-		}
-
-		// TODO: append to IMAP Sent mailbox
-
-		return ctx.Redirect(http.StatusFound, "/mailbox/INBOX")
-	}
-
-	return ctx.Render(http.StatusOK, "compose.html", &ComposeRenderData{
-		RenderData: *NewRenderData(ctx),
-		Message:    &msg,
-	})
-}