mirror of
https://github.com/mjl-/mox.git
synced 2024-12-26 08:23:48 +03:00
add support for parsing the imap "bodystructure" extensible form
not generating it yet from imapserver because we don't have content-md5 available. we could send "nil" instead of any actual content-md5 header (and probably no contemporary messages include a content-md5 header), but it would not be correct. if no known clients have problems in practice with absent extensible data, it's better to just leave the bodystructure as is, with extensible data. for issue #217 by danieleggert
This commit is contained in:
Mechiel Lukkien
parent
81c179bb4c
commit
5d97bf198a
2 changed files with 239 additions and 63 deletions
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@ -54,6 +54,10 @@ func (c *Conn) readrune() (rune, error) {
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return x, err
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}
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func (c *Conn) space() bool {
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return c.take(' ')
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}
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func (c *Conn) xspace() {
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c.xtake(" ")
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}
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@ -70,6 +74,10 @@ func (c *Conn) peek(exp byte) bool {
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return err == nil && strings.EqualFold(string(rune(b)), string(rune(exp)))
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}
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func (c *Conn) peekstring() bool {
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return c.peek('"') || c.peek('{')
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}
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func (c *Conn) take(exp byte) bool {
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if c.peek(exp) {
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_, _ = c.readbyte()
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@ -141,7 +149,7 @@ func (c *Conn) xrespCode() (string, CodeArg) {
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if _, ok := knownCodes[W]; !ok {
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var args []string
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for c.take(' ') {
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for c.space() {
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arg := ""
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for !c.peek(' ') && !c.peek(']') {
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arg += string(rune(c.xbyte()))
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@ -155,10 +163,10 @@ func (c *Conn) xrespCode() (string, CodeArg) {
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switch W {
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case "BADCHARSET":
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var l []string // Must be nil initially.
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if c.take(' ') {
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if c.space() {
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c.xtake("(")
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l = []string{c.xcharset()}
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for c.take(' ') {
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for c.space() {
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l = append(l, c.xcharset())
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}
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c.xtake(")")
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@ -167,7 +175,7 @@ func (c *Conn) xrespCode() (string, CodeArg) {
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case "CAPABILITY":
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c.xtake(" ")
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caps := []string{c.xatom()}
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for c.take(' ') {
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for c.space() {
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caps = append(caps, c.xatom())
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}
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c.CapAvailable = map[Capability]struct{}{}
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@ -178,10 +186,10 @@ func (c *Conn) xrespCode() (string, CodeArg) {
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case "PERMANENTFLAGS":
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l := []string{} // Must be non-nil.
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if c.take(' ') {
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if c.space() {
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c.xtake("(")
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l = []string{c.xflagPerm()}
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for c.take(' ') {
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for c.space() {
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l = append(l, c.xflagPerm())
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}
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c.xtake(")")
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@ -248,6 +256,14 @@ func (c *Conn) xdigits() string {
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}
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}
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func (c *Conn) peekdigit() bool {
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if b, err := c.readbyte(); err == nil {
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c.unreadbyte()
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return b >= '0' && b <= '9'
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}
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return false
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}
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func (c *Conn) xint32() int32 {
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s := c.xdigits()
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num, err := strconv.ParseInt(s, 10, 32)
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@ -321,7 +337,7 @@ func (c *Conn) xuntagged() Untagged {
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case "CAPABILITY":
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// ../rfc/9051:6427
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var caps []string
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for c.take(' ') {
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for c.space() {
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caps = append(caps, c.xnonspace())
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}
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c.CapAvailable = map[Capability]struct{}{}
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@ -335,7 +351,7 @@ func (c *Conn) xuntagged() Untagged {
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case "ENABLED":
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// ../rfc/9051:6520
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var caps []string
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for c.take(' ') {
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for c.space() {
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caps = append(caps, c.xnonspace())
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}
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for _, cap := range caps {
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@ -427,7 +443,7 @@ func (c *Conn) xuntagged() Untagged {
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// ../rfc/9051:6809
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c.xneedDisabled("untagged SEARCH response", CapIMAP4rev2)
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var nums []uint32
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for c.take(' ') {
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for c.space() {
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// ../rfc/7162:2557
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if c.take('(') {
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c.xtake("MODSEQ")
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@ -473,7 +489,7 @@ func (c *Conn) xuntagged() Untagged {
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params[k] = v
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}
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} else {
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c.xtake("NIL")
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c.xtake("nil")
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}
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c.xcrlf()
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return UntaggedID(params)
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@ -497,7 +513,7 @@ func (c *Conn) xuntagged() Untagged {
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c.xspace()
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c.xastring()
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var roots []string
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for c.take(' ') {
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for c.space() {
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root := c.xastring()
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roots = append(roots, root)
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}
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@ -523,7 +539,7 @@ func (c *Conn) xuntagged() Untagged {
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seen := map[QuotaResourceName]bool{}
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l := []QuotaResource{xresource()}
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seen[l[0].Name] = true
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for c.take(' ') {
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for c.space() {
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res := xresource()
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if seen[res.Name] {
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c.xerrorf("duplicate resource name %q", res.Name)
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@ -583,7 +599,7 @@ func (c *Conn) xuntagged() Untagged {
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func (c *Conn) xfetch(num uint32) UntaggedFetch {
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c.xtake("(")
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attrs := []FetchAttr{c.xmsgatt1()}
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for c.take(' ') {
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for c.space() {
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attrs = append(attrs, c.xmsgatt1())
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}
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c.xtake(")")
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@ -611,7 +627,7 @@ func (c *Conn) xmsgatt1() FetchAttr {
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var flags []string
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if !c.take(')') {
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flags = []string{c.xflag()}
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for c.take(' ') {
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for c.space() {
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flags = append(flags, c.xflag())
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}
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c.xtake(")")
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@ -646,8 +662,8 @@ func (c *Conn) xmsgatt1() FetchAttr {
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return FetchRFC822Text(s)
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case "BODY":
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if c.take(' ') {
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return FetchBodystructure{F, c.xbodystructure()}
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if c.space() {
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return FetchBodystructure{F, c.xbodystructure(false)}
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}
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c.record = true
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section := c.xsection()
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@ -663,7 +679,7 @@ func (c *Conn) xmsgatt1() FetchAttr {
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case "BODYSTRUCTURE":
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c.xspace()
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return FetchBodystructure{F, c.xbodystructure()}
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return FetchBodystructure{F, c.xbodystructure(true)}
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case "BINARY":
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c.record = true
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@ -703,7 +719,7 @@ func (c *Conn) xnilString() string {
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} else if c.peek('{') {
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return string(c.xliteral())
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} else {
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c.xtake("NIL")
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c.xtake("nil")
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return ""
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}
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}
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@ -831,50 +847,69 @@ func (c *Conn) xnilStringLiteral8() []byte {
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}
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// ../rfc/9051:6355
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func (c *Conn) xbodystructure() any {
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func (c *Conn) xbodystructure(extensibleForm bool) any {
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c.xtake("(")
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if c.peek('(') {
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// ../rfc/9051:6411
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parts := []any{c.xbodystructure()}
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parts := []any{c.xbodystructure(extensibleForm)}
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for c.peek('(') {
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parts = append(parts, c.xbodystructure())
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parts = append(parts, c.xbodystructure(extensibleForm))
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}
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c.xspace()
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mediaSubtype := c.xstring()
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// todo: parse optional body-ext-mpart
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var ext *BodyExtensionMpart
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if extensibleForm && c.space() {
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ext = c.xbodyExtMpart()
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}
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c.xtake(")")
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return BodyTypeMpart{parts, mediaSubtype}
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return BodyTypeMpart{parts, mediaSubtype, ext}
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}
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// todo: verify the media(sub)type is valid for returned data.
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var ext *BodyExtension1Part
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mediaType := c.xstring()
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c.xspace()
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mediaSubtype := c.xstring()
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c.xspace()
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bodyFields := c.xbodyFields()
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if c.take(' ') {
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if c.peek('(') {
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// ../rfc/9051:6415
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envelope := c.xenvelope()
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c.xspace()
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bodyStructure := c.xbodystructure()
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c.xspace()
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lines := c.xint64()
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c.xtake(")")
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return BodyTypeMsg{mediaType, mediaSubtype, bodyFields, envelope, bodyStructure, lines}
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}
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// ../rfc/9051:6418
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lines := c.xint64()
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if !c.space() {
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// Basic type without extension.
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c.xtake(")")
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return BodyTypeText{mediaType, mediaSubtype, bodyFields, lines}
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return BodyTypeBasic{mediaType, mediaSubtype, bodyFields, nil}
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}
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if c.peek('(') {
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// ../rfc/9051:6415
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envelope := c.xenvelope()
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c.xspace()
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bodyStructure := c.xbodystructure(extensibleForm)
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c.xspace()
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lines := c.xint64()
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if extensibleForm && c.space() {
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ext = c.xbodyExt1Part()
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}
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c.xtake(")")
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return BodyTypeMsg{mediaType, mediaSubtype, bodyFields, envelope, bodyStructure, lines, ext}
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}
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if !strings.EqualFold(mediaType, "text") {
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if !extensibleForm {
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c.xerrorf("body result, basic type, with disallowed extensible form")
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}
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ext = c.xbodyExt1Part()
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// ../rfc/9051:6407
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c.xtake(")")
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return BodyTypeBasic{mediaType, mediaSubtype, bodyFields, ext}
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}
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// ../rfc/9051:6418
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lines := c.xint64()
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if extensibleForm && c.space() {
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ext = c.xbodyExt1Part()
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}
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// ../rfc/9051:6407
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c.xtake(")")
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return BodyTypeBasic{mediaType, mediaSubtype, bodyFields}
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// todo: verify the media(sub)type is valid for returned data.
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return BodyTypeText{mediaType, mediaSubtype, bodyFields, lines, ext}
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}
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// ../rfc/9051:6376
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// ../rfc/9051:6376 ../rfc/3501:4604
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func (c *Conn) xbodyFields() BodyFields {
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params := c.xbodyFldParam()
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c.xspace()
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@ -888,14 +923,58 @@ func (c *Conn) xbodyFields() BodyFields {
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return BodyFields{params, contentID, contentDescr, cte, octets}
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}
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// ../rfc/9051:6401
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// ../rfc/9051:6371 ../rfc/3501:4599
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func (c *Conn) xbodyExtMpart() (ext *BodyExtensionMpart) {
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ext = &BodyExtensionMpart{}
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ext.Params = c.xbodyFldParam()
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if !c.space() {
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return
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}
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ext.Disposition, ext.DispositionParams = c.xbodyFldDsp()
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if !c.space() {
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return
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}
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ext.Language = c.xbodyFldLang()
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if !c.space() {
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return
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}
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ext.Location = c.xbodyFldLoc()
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for c.space() {
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ext.More = append(ext.More, c.xbodyExtension())
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}
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return
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}
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// ../rfc/9051:6366 ../rfc/3501:4584
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func (c *Conn) xbodyExt1Part() (ext *BodyExtension1Part) {
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ext = &BodyExtension1Part{}
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ext.MD5 = c.xnilString()
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if !c.space() {
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return
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}
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ext.Disposition, ext.DispositionParams = c.xbodyFldDsp()
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if !c.space() {
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return
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}
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ext.Language = c.xbodyFldLang()
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if !c.space() {
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return
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}
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ext.Location = c.xbodyFldLoc()
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for c.space() {
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ext.More = append(ext.More, c.xbodyExtension())
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}
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return
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}
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// ../rfc/9051:6401 ../rfc/3501:4626
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func (c *Conn) xbodyFldParam() [][2]string {
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if c.take('(') {
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k := c.xstring()
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c.xspace()
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v := c.xstring()
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l := [][2]string{{k, v}}
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for c.take(' ') {
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for c.space() {
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k = c.xstring()
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c.xspace()
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v = c.xstring()
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@ -904,10 +983,67 @@ func (c *Conn) xbodyFldParam() [][2]string {
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c.xtake(")")
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return l
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}
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c.xtake("NIL")
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c.xtake("nil")
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return nil
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}
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// ../rfc/9051:6381 ../rfc/3501:4609
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func (c *Conn) xbodyFldDsp() (string, [][2]string) {
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if !c.take('(') {
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c.xtake("nil")
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return "", nil
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}
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disposition := c.xstring()
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c.xspace()
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param := c.xbodyFldParam()
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c.xtake(")")
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return disposition, param
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}
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// ../rfc/9051:6391 ../rfc/3501:4616
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func (c *Conn) xbodyFldLang() (lang []string) {
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if c.take('(') {
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lang = []string{c.xstring()}
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for c.space() {
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lang = append(lang, c.xstring())
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}
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c.xtake(")")
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return lang
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}
|
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if c.peekstring() {
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return []string{c.xstring()}
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}
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c.xtake("nil")
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return nil
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}
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// ../rfc/9051:6393 ../rfc/3501:4618
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func (c *Conn) xbodyFldLoc() string {
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return c.xnilString()
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}
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|
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// ../rfc/9051:6357 ../rfc/3501:4575
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func (c *Conn) xbodyExtension() (ext BodyExtension) {
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if c.take('(') {
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for {
|
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ext.More = append(ext.More, c.xbodyExtension())
|
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if !c.space() {
|
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break
|
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}
|
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}
|
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c.xtake(")")
|
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} else if c.peekdigit() {
|
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num := c.xint64()
|
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ext.Number = &num
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} else if c.peekstring() {
|
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str := c.xstring()
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ext.String = &str
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} else {
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c.xtake("nil")
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}
|
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return ext
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}
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|
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// ../rfc/9051:6522
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func (c *Conn) xenvelope() Envelope {
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c.xtake("(")
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@ -937,7 +1073,7 @@ func (c *Conn) xenvelope() Envelope {
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// ../rfc/9051:6526
|
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func (c *Conn) xaddresses() []Address {
|
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if !c.take('(') {
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c.xtake("NIL")
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c.xtake("nil")
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return nil
|
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}
|
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l := []Address{c.xaddress()}
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@ -967,7 +1103,7 @@ func (c *Conn) xflagList() []string {
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var l []string
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if !c.take(')') {
|
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l = []string{c.xflag()}
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for c.take(' ') {
|
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for c.space() {
|
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l = append(l, c.xflag())
|
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}
|
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c.xtake(")")
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@ -981,7 +1117,7 @@ func (c *Conn) xmailboxList() UntaggedList {
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var flags []string
|
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if !c.peek(')') {
|
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flags = append(flags, c.xflag())
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for c.take(' ') {
|
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for c.space() {
|
||||
flags = append(flags, c.xflag())
|
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}
|
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}
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@ -996,16 +1132,16 @@ func (c *Conn) xmailboxList() UntaggedList {
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}
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b = byte(quoted[0])
|
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} else if !c.peek(' ') {
|
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c.xtake("NIL")
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c.xtake("nil")
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}
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c.xspace()
|
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mailbox := c.xastring()
|
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ul := UntaggedList{flags, b, mailbox, nil, ""}
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if c.take(' ') {
|
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if c.space() {
|
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c.xtake("(")
|
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if !c.peek(')') {
|
||||
c.xmboxListExtendedItem(&ul)
|
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for c.take(' ') {
|
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for c.space() {
|
||||
c.xmboxListExtendedItem(&ul)
|
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}
|
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}
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@ -1108,7 +1244,7 @@ func (c *Conn) xtaggedExtComp() TaggedExtComp {
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return TaggedExtComp{String: s}
|
||||
}
|
||||
l := []TaggedExtComp{{String: s}}
|
||||
for c.take(' ') {
|
||||
for c.space() {
|
||||
l = append(l, c.xtaggedExtComp())
|
||||
}
|
||||
return TaggedExtComp{Comps: l}
|
||||
|
|
@ -1117,7 +1253,7 @@ func (c *Conn) xtaggedExtComp() TaggedExtComp {
|
|||
// ../rfc/9051:6765
|
||||
func (c *Conn) xnamespace() []NamespaceDescr {
|
||||
if !c.take('(') {
|
||||
c.xtake("NIL")
|
||||
c.xtake("nil")
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
@ -1141,7 +1277,7 @@ func (c *Conn) xnamespaceDescr() NamespaceDescr {
|
|||
}
|
||||
b = byte(s[0])
|
||||
} else {
|
||||
c.xtake("NIL")
|
||||
c.xtake("nil")
|
||||
}
|
||||
var exts []NamespaceExtension
|
||||
for !c.take(')') {
|
||||
|
|
@ -1150,7 +1286,7 @@ func (c *Conn) xnamespaceDescr() NamespaceDescr {
|
|||
c.xspace()
|
||||
c.xtake("(")
|
||||
values := []string{c.xstring()}
|
||||
for c.take(' ') {
|
||||
for c.space() {
|
||||
values = append(values, c.xstring())
|
||||
}
|
||||
c.xtake(")")
|
||||
|
|
@ -1172,7 +1308,7 @@ func (c *Conn) xneedDisabled(msg string, caps ...Capability) {
|
|||
// Already consumed: "ESEARCH"
|
||||
func (c *Conn) xesearchResponse() (r UntaggedEsearch) {
|
||||
|
||||
if !c.take(' ') {
|
||||
if !c.space() {
|
||||
return
|
||||
}
|
||||
if c.take('(') {
|
||||
|
|
@ -1182,14 +1318,14 @@ func (c *Conn) xesearchResponse() (r UntaggedEsearch) {
|
|||
r.Correlator = c.xastring()
|
||||
c.xtake(")")
|
||||
}
|
||||
if !c.take(' ') {
|
||||
if !c.space() {
|
||||
return
|
||||
}
|
||||
w := c.xnonspace()
|
||||
W := strings.ToUpper(w)
|
||||
if W == "UID" {
|
||||
r.UID = true
|
||||
if !c.take(' ') {
|
||||
if !c.space() {
|
||||
return
|
||||
}
|
||||
w = c.xnonspace()
|
||||
|
|
@ -1250,7 +1386,7 @@ func (c *Conn) xesearchResponse() (r UntaggedEsearch) {
|
|||
r.Exts = append(r.Exts, ext)
|
||||
}
|
||||
|
||||
if !c.take(' ') {
|
||||
if !c.space() {
|
||||
break
|
||||
}
|
||||
w = c.xnonspace() // todo: this is too loose
|
||||
|
|
|
|||
|
|
@ -479,21 +479,26 @@ type BodyFields struct {
|
|||
Octets int32
|
||||
}
|
||||
|
||||
// BodyTypeMpart represents the body structure a multipart message, with subparts and the multipart media subtype. Used in a FETCH response.
|
||||
// BodyTypeMpart represents the body structure a multipart message, with
|
||||
// subparts and the multipart media subtype. Used in a FETCH response.
|
||||
type BodyTypeMpart struct {
|
||||
// ../rfc/9051:6411
|
||||
Bodies []any // BodyTypeBasic, BodyTypeMsg, BodyTypeText
|
||||
MediaSubtype string
|
||||
Ext *BodyExtensionMpart
|
||||
}
|
||||
|
||||
// BodyTypeBasic represents basic information about a part, used in a FETCH response.
|
||||
// BodyTypeBasic represents basic information about a part, used in a FETCH
|
||||
// response.
|
||||
type BodyTypeBasic struct {
|
||||
// ../rfc/9051:6407
|
||||
MediaType, MediaSubtype string
|
||||
BodyFields BodyFields
|
||||
Ext *BodyExtension1Part
|
||||
}
|
||||
|
||||
// BodyTypeMsg represents an email message as a body structure, used in a FETCH response.
|
||||
// BodyTypeMsg represents an email message as a body structure, used in a FETCH
|
||||
// response.
|
||||
type BodyTypeMsg struct {
|
||||
// ../rfc/9051:6415
|
||||
MediaType, MediaSubtype string
|
||||
|
|
@ -501,14 +506,49 @@ type BodyTypeMsg struct {
|
|||
Envelope Envelope
|
||||
Bodystructure any // One of the BodyType*
|
||||
Lines int64
|
||||
Ext *BodyExtension1Part
|
||||
}
|
||||
|
||||
// BodyTypeText represents a text part as a body structure, used in a FETCH response.
|
||||
// BodyTypeText represents a text part as a body structure, used in a FETCH
|
||||
// response.
|
||||
type BodyTypeText struct {
|
||||
// ../rfc/9051:6418
|
||||
MediaType, MediaSubtype string
|
||||
BodyFields BodyFields
|
||||
Lines int64
|
||||
Ext *BodyExtension1Part
|
||||
}
|
||||
|
||||
// BodyExtension1Part has the extensible form fields of a BODYSTRUCTURE for
|
||||
// multiparts.
|
||||
type BodyExtensionMpart struct {
|
||||
// ../rfc/9051:5986 ../rfc/3501:4161 ../rfc/9051:6371 ../rfc/3501:4599
|
||||
Params [][2]string
|
||||
Disposition string
|
||||
DispositionParams [][2]string
|
||||
Language []string
|
||||
Location string
|
||||
More []BodyExtension
|
||||
}
|
||||
|
||||
// BodyExtension1Part has the extensible form fields of a BODYSTRUCTURE for
|
||||
// non-multiparts.
|
||||
type BodyExtension1Part struct {
|
||||
// ../rfc/9051:6023 ../rfc/3501:4191 ../rfc/9051:6366 ../rfc/3501:4584
|
||||
MD5 string
|
||||
Disposition string
|
||||
DispositionParams [][2]string
|
||||
Language []string
|
||||
Location string
|
||||
More []BodyExtension
|
||||
}
|
||||
|
||||
// BodyExtension has the additional extension fields for future expansion of
|
||||
// extensions.
|
||||
type BodyExtension struct {
|
||||
String *string
|
||||
Number *int64
|
||||
More []BodyExtension
|
||||
}
|
||||
|
||||
// "BINARY" fetch response.
|
||||
|
|
|
|||
Loading…
Reference in a new issue