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mox!
This commit is contained in:
Mechiel Lukkien
228
imapserver/list.go
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228
imapserver/list.go
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@ -0,0 +1,228 @@
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package imapserver
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import (
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"fmt"
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"path/filepath"
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"sort"
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"strings"
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"github.com/mjl-/bstore"
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"github.com/mjl-/mox/store"
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)
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// LIST command, for listing mailboxes with various attributes, including about subscriptions and children.
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// We don't have flags Marked, Unmarked, NoSelect and NoInferiors and we don't have REMOTE mailboxes.
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//
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// State: Authenticated and selected.
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func (c *conn) cmdList(tag, cmd string, p *parser) {
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// Command: ../rfc/9051:2224 ../rfc/6154:144 ../rfc/5258:193 ../rfc/3501:2191
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// Examples: ../rfc/9051:2755 ../rfc/6154:347 ../rfc/5258:679 ../rfc/3501:2359
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// Request syntax: ../rfc/9051:6600 ../rfc/6154:478 ../rfc/5258:1095 ../rfc/3501:4793
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p.xspace()
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var isExtended bool
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var listSubscribed bool
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var listRecursive bool
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if p.take("(") {
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// ../rfc/9051:6633
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isExtended = true
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selectOptions := map[string]bool{}
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var nbase int
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for !p.take(")") {
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if len(selectOptions) > 0 {
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p.xspace()
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}
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w := p.xatom()
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W := strings.ToUpper(w)
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switch W {
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case "REMOTE":
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case "RECURSIVEMATCH":
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listRecursive = true
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case "SUBSCRIBED":
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nbase++
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listSubscribed = true
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default:
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// ../rfc/9051:2398
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xsyntaxErrorf("bad list selection option %q", w)
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}
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// Duplicates must be accepted. ../rfc/9051:2399
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selectOptions[W] = true
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}
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if listRecursive && nbase == 0 {
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// ../rfc/9051:6640
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xsyntaxErrorf("cannot have RECURSIVEMATCH selection option without other (base) selection option")
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}
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p.xspace()
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}
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reference := p.xmailbox()
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p.xspace()
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patterns, isList := p.xmboxOrPat()
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isExtended = isExtended || isList
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var retSubscribed, retChildren, retSpecialUse bool
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var retStatusAttrs []string
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if p.take(" RETURN (") {
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isExtended = true
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// ../rfc/9051:6613 ../rfc/9051:6915 ../rfc/9051:7072 ../rfc/9051:6821 ../rfc/5819:95
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n := 0
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for !p.take(")") {
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if n > 0 {
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p.xspace()
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}
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n++
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w := p.xatom()
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W := strings.ToUpper(w)
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switch W {
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case "SUBSCRIBED":
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retSubscribed = true
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case "CHILDREN":
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// ../rfc/3348:44
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retChildren = true
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case "SPECIAL-USE":
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// ../rfc/6154:478
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retSpecialUse = true
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case "STATUS":
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// ../rfc/9051:7072 ../rfc/5819:181
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p.xspace()
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p.xtake("(")
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retStatusAttrs = []string{p.xstatusAtt()}
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for p.take(" ") {
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retStatusAttrs = append(retStatusAttrs, p.xstatusAtt())
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}
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p.xtake(")")
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default:
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// ../rfc/9051:2398
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xsyntaxErrorf("bad list return option %q", w)
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}
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}
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}
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p.xempty()
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if !isExtended && reference == "" && patterns[0] == "" {
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// ../rfc/9051:2277 ../rfc/3501:2221
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c.bwritelinef(`* LIST () "/" ""`)
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c.ok(tag, cmd)
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return
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}
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if isExtended {
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// ../rfc/9051:2286
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n := make([]string, 0, len(patterns))
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for _, p := range patterns {
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if p != "" {
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n = append(n, p)
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}
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}
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patterns = n
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}
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re := xmailboxPatternMatcher(reference, patterns)
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var responseLines []string
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c.account.WithRLock(func() {
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c.xdbread(func(tx *bstore.Tx) {
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type info struct {
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mailbox *store.Mailbox
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subscribed bool
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}
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names := map[string]info{}
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hasSubscribedChild := map[string]bool{}
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hasChild := map[string]bool{}
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var nameList []string
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q := bstore.QueryTx[store.Mailbox](tx)
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err := q.ForEach(func(mb store.Mailbox) error {
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names[mb.Name] = info{mailbox: &mb}
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nameList = append(nameList, mb.Name)
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for p := filepath.Dir(mb.Name); p != "."; p = filepath.Dir(p) {
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hasChild[p] = true
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}
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return nil
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})
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xcheckf(err, "listing mailboxes")
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qs := bstore.QueryTx[store.Subscription](tx)
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err = qs.ForEach(func(sub store.Subscription) error {
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info, ok := names[sub.Name]
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info.subscribed = true
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names[sub.Name] = info
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if !ok {
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nameList = append(nameList, sub.Name)
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}
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for p := filepath.Dir(sub.Name); p != "."; p = filepath.Dir(p) {
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hasSubscribedChild[p] = true
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}
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return nil
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})
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xcheckf(err, "listing subscriptions")
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sort.Strings(nameList) // For predictable order in tests.
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for _, name := range nameList {
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if !re.MatchString(name) {
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continue
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}
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info := names[name]
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var flags listspace
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var extended listspace
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if listRecursive && hasSubscribedChild[name] {
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extended = listspace{bare("CHILDINFO"), listspace{dquote("SUBSCRIBED")}}
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}
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if listSubscribed && info.subscribed {
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flags = append(flags, bare(`\Subscribed`))
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if info.mailbox == nil {
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flags = append(flags, bare(`\NonExistent`))
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}
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}
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if (info.mailbox == nil || listSubscribed) && flags == nil && extended == nil {
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continue
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}
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if retChildren {
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var f string
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if hasChild[name] {
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f = `\HasChildren`
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} else {
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f = `\HasNoChildren`
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}
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flags = append(flags, bare(f))
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}
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if !listSubscribed && retSubscribed && info.subscribed {
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flags = append(flags, bare(`\Subscribed`))
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}
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if retSpecialUse && info.mailbox != nil {
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if info.mailbox.Archive {
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flags = append(flags, bare(`\Archive`))
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}
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if info.mailbox.Draft {
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flags = append(flags, bare(`\Draft`))
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}
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if info.mailbox.Junk {
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flags = append(flags, bare(`\Junk`))
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}
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if info.mailbox.Sent {
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flags = append(flags, bare(`\Sent`))
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}
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if info.mailbox.Trash {
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flags = append(flags, bare(`\Trash`))
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}
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}
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var extStr string
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if extended != nil {
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extStr = " " + extended.pack(c)
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}
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line := fmt.Sprintf(`* LIST %s "/" %s%s`, flags.pack(c), astring(name).pack(c), extStr)
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responseLines = append(responseLines, line)
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if retStatusAttrs != nil && info.mailbox != nil {
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responseLines = append(responseLines, c.xstatusLine(tx, *info.mailbox, retStatusAttrs))
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}
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}
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})
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})
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for _, line := range responseLines {
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c.bwritelinef("%s", line)
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}
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c.ok(tag, cmd)
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}
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