mirror of
https://github.com/mjl-/mox.git
synced 2025-03-20 00:52:31 +03:00
40163bd145
the mailbox select/examine responses now return all flags used in a mailbox in the FLAGS response. and indicate in the PERMANENTFLAGS response that clients can set new keywords. we store these values on the new Message.Keywords field. system/well-known flags are still in Message.Flags, so we're recognizing those and handling them separately. the imap store command handles the new flags. as does the append command, and the search command. we store keywords in a mailbox when a message in that mailbox gets the keyword. we don't automatically remove the keywords from a mailbox. there is currently no way at all to remove a keyword from a mailbox. the import commands now handle non-system/well-known keywords too, when importing from mbox/maildir. jmap requires keyword support, so best to get it out of the way now.
963 lines
19 KiB
Go
963 lines
19 KiB
Go
package imapserver
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"net/textproto"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/mjl-/mox/mlog"
|
|
)
|
|
|
|
var (
|
|
listWildcards = "%*"
|
|
char = charRange('\x01', '\x7f')
|
|
ctl = charRange('\x01', '\x19')
|
|
atomChar = charRemove(char, "(){ "+listWildcards+ctl)
|
|
respSpecials = atomChar + "]"
|
|
astringChar = atomChar + respSpecials
|
|
)
|
|
|
|
func charRange(first, last rune) string {
|
|
r := ""
|
|
c := first
|
|
r += string(c)
|
|
for c < last {
|
|
c++
|
|
r += string(c)
|
|
}
|
|
return r
|
|
}
|
|
|
|
func charRemove(s, remove string) string {
|
|
r := ""
|
|
next:
|
|
for _, c := range s {
|
|
for _, x := range remove {
|
|
if c == x {
|
|
continue next
|
|
}
|
|
}
|
|
r += string(c)
|
|
}
|
|
return r
|
|
}
|
|
|
|
type parser struct {
|
|
// Orig is the line in original casing, and upper in upper casing. We often match
|
|
// against upper for easy case insensitive handling as IMAP requires, but sometimes
|
|
// return from orig to keep the original case.
|
|
orig string
|
|
upper string
|
|
o int // Current offset in parsing.
|
|
contexts []string // What we're parsing, for error messages.
|
|
conn *conn
|
|
}
|
|
|
|
// toUpper upper cases bytes that are a-z. strings.ToUpper does too much. and
|
|
// would replace invalid bytes with unicode replacement characters, which would
|
|
// break our requirement that offsets into the original and upper case strings
|
|
// point to the same character.
|
|
func toUpper(s string) string {
|
|
r := []byte(s)
|
|
for i, c := range r {
|
|
if c >= 'a' && c <= 'z' {
|
|
r[i] = c - 0x20
|
|
}
|
|
}
|
|
return string(r)
|
|
}
|
|
|
|
func newParser(s string, conn *conn) *parser {
|
|
return &parser{s, toUpper(s), 0, nil, conn}
|
|
}
|
|
|
|
func (p *parser) xerrorf(format string, args ...any) {
|
|
var err error
|
|
errmsg := fmt.Sprintf(format, args...)
|
|
remaining := fmt.Sprintf("remaining %q", p.orig[p.o:])
|
|
if len(p.contexts) > 0 {
|
|
remaining += ", context " + strings.Join(p.contexts, ",")
|
|
}
|
|
remaining = " (" + remaining + ")"
|
|
if p.conn.account != nil {
|
|
errmsg += remaining
|
|
err = errors.New(errmsg)
|
|
} else {
|
|
err = errors.New(errmsg + remaining)
|
|
}
|
|
panic(syntaxError{"", "", errmsg, err})
|
|
}
|
|
|
|
func (p *parser) context(s string) func() {
|
|
p.contexts = append(p.contexts, s)
|
|
return func() {
|
|
p.contexts = p.contexts[:len(p.contexts)-1]
|
|
}
|
|
}
|
|
|
|
func (p *parser) empty() bool {
|
|
return p.o == len(p.upper)
|
|
}
|
|
|
|
func (p *parser) xempty() {
|
|
if !p.empty() {
|
|
p.xerrorf("leftover data")
|
|
}
|
|
}
|
|
|
|
func (p *parser) hasPrefix(s string) bool {
|
|
return strings.HasPrefix(p.upper[p.o:], s)
|
|
}
|
|
|
|
func (p *parser) take(s string) bool {
|
|
if !p.hasPrefix(s) {
|
|
return false
|
|
}
|
|
p.o += len(s)
|
|
return true
|
|
}
|
|
|
|
func (p *parser) xtake(s string) {
|
|
if !p.take(s) {
|
|
p.xerrorf("expected %q", s)
|
|
}
|
|
}
|
|
|
|
func (p *parser) xnonempty() {
|
|
if p.empty() {
|
|
p.xerrorf("unexpected end")
|
|
}
|
|
}
|
|
|
|
func (p *parser) xtakeall() string {
|
|
r := p.orig[p.o:]
|
|
p.o = len(p.orig)
|
|
return r
|
|
}
|
|
|
|
func (p *parser) xtake1n(n int, what string) string {
|
|
if n == 0 {
|
|
p.xerrorf("expected chars from %s", what)
|
|
}
|
|
return p.xtaken(n)
|
|
}
|
|
|
|
func (p *parser) xtake1fn(fn func(i int, c rune) bool) string {
|
|
i := 0
|
|
s := ""
|
|
for _, c := range p.upper[p.o:] {
|
|
if !fn(i, c) {
|
|
break
|
|
}
|
|
s += string(c)
|
|
i++
|
|
}
|
|
if s == "" {
|
|
p.xerrorf("expected at least one character")
|
|
}
|
|
p.o += len(s)
|
|
return s
|
|
}
|
|
|
|
func (p *parser) xtakechars(s string, what string) string {
|
|
p.xnonempty()
|
|
for i, c := range p.orig[p.o:] {
|
|
if !contains(s, c) {
|
|
return p.xtake1n(i, what)
|
|
}
|
|
}
|
|
return p.xtakeall()
|
|
}
|
|
|
|
func (p *parser) xtaken(n int) string {
|
|
if p.o+n > len(p.orig) {
|
|
p.xerrorf("not enough data")
|
|
}
|
|
r := p.orig[p.o : p.o+n]
|
|
p.o += n
|
|
return r
|
|
}
|
|
|
|
func (p *parser) peekn(n int) (string, bool) {
|
|
if len(p.upper[p.o:]) < n {
|
|
return "", false
|
|
}
|
|
return p.upper[p.o : p.o+n], true
|
|
}
|
|
|
|
func (p *parser) space() bool {
|
|
return p.take(" ")
|
|
}
|
|
|
|
func (p *parser) xspace() {
|
|
if !p.space() {
|
|
p.xerrorf("expected space")
|
|
}
|
|
}
|
|
|
|
func (p *parser) digits() string {
|
|
var n int
|
|
for _, c := range p.upper[p.o:] {
|
|
if c >= '0' && c <= '9' {
|
|
n++
|
|
}
|
|
}
|
|
if n == 0 {
|
|
return ""
|
|
}
|
|
s := p.upper[p.o : p.o+n]
|
|
p.o += n
|
|
return s
|
|
}
|
|
|
|
func (p *parser) nznumber() (uint32, bool) {
|
|
o := p.o
|
|
for o < len(p.upper) && p.upper[o] >= '0' && p.upper[o] <= '9' {
|
|
o++
|
|
}
|
|
if o == p.o {
|
|
return 0, false
|
|
}
|
|
if n, err := strconv.ParseUint(p.upper[p.o:o], 10, 32); err != nil {
|
|
return 0, false
|
|
} else if n == 0 {
|
|
return 0, false
|
|
} else {
|
|
p.o = o
|
|
return uint32(n), true
|
|
}
|
|
}
|
|
|
|
func (p *parser) xnznumber() uint32 {
|
|
n, ok := p.nznumber()
|
|
if !ok {
|
|
p.xerrorf("expected non-zero number")
|
|
}
|
|
return n
|
|
}
|
|
|
|
func (p *parser) number() (uint32, bool) {
|
|
o := p.o
|
|
for o < len(p.upper) && p.upper[o] >= '0' && p.upper[o] <= '9' {
|
|
o++
|
|
}
|
|
if o == p.o {
|
|
return 0, false
|
|
}
|
|
n, err := strconv.ParseUint(p.upper[p.o:o], 10, 32)
|
|
if err != nil {
|
|
return 0, false
|
|
}
|
|
p.o = o
|
|
return uint32(n), true
|
|
}
|
|
|
|
func (p *parser) xnumber() uint32 {
|
|
n, ok := p.number()
|
|
if !ok {
|
|
p.xerrorf("expected number")
|
|
}
|
|
return n
|
|
}
|
|
|
|
func (p *parser) xnumber64() int64 {
|
|
s := p.digits()
|
|
if s == "" {
|
|
p.xerrorf("expected number64")
|
|
}
|
|
v, err := strconv.ParseInt(s, 10, 64)
|
|
if err != nil {
|
|
p.xerrorf("parsing number64 %q: %v", s, err)
|
|
}
|
|
return v
|
|
}
|
|
|
|
// l should be a list of uppercase words, the first match is returned
|
|
func (p *parser) takelist(l ...string) (string, bool) {
|
|
for _, w := range l {
|
|
if p.take(w) {
|
|
return w, true
|
|
}
|
|
}
|
|
return "", false
|
|
}
|
|
|
|
func (p *parser) xtakelist(l ...string) string {
|
|
w, ok := p.takelist(l...)
|
|
if !ok {
|
|
p.xerrorf("expected one of %s", strings.Join(l, ","))
|
|
}
|
|
return w
|
|
}
|
|
|
|
func (p *parser) xstring() (r string) {
|
|
if p.take(`"`) {
|
|
esc := false
|
|
r := ""
|
|
for i, c := range p.orig[p.o:] {
|
|
if c == '\\' {
|
|
esc = true
|
|
} else if c == '\x00' || c == '\r' || c == '\n' {
|
|
p.xerrorf("invalid nul, cr or lf in string")
|
|
} else if esc {
|
|
if c == '\\' || c == '"' {
|
|
r += string(c)
|
|
esc = false
|
|
} else {
|
|
p.xerrorf("invalid escape char %c", c)
|
|
}
|
|
} else if c == '"' {
|
|
p.o += i + 1
|
|
return r
|
|
} else {
|
|
r += string(c)
|
|
}
|
|
}
|
|
p.xerrorf("missing closing dquote in string")
|
|
}
|
|
size, sync := p.xliteralSize(100*1024, false)
|
|
s := p.conn.xreadliteral(size, sync)
|
|
line := p.conn.readline(false)
|
|
p.orig, p.upper, p.o = line, toUpper(line), 0
|
|
return s
|
|
}
|
|
|
|
func (p *parser) xnil() {
|
|
p.xtake("NIL")
|
|
}
|
|
|
|
// Returns NIL as empty string.
|
|
func (p *parser) xnilString() string {
|
|
if p.take("NIL") {
|
|
return ""
|
|
}
|
|
return p.xstring()
|
|
}
|
|
|
|
func (p *parser) xastring() string {
|
|
if p.hasPrefix(`"`) || p.hasPrefix("{") || p.hasPrefix("~{") {
|
|
return p.xstring()
|
|
}
|
|
return p.xtakechars(astringChar, "astring")
|
|
}
|
|
|
|
func contains(s string, c rune) bool {
|
|
for _, x := range s {
|
|
if x == c {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (p *parser) xtag() string {
|
|
p.xnonempty()
|
|
for i, c := range p.orig[p.o:] {
|
|
if c == '+' || !contains(astringChar, c) {
|
|
return p.xtake1n(i, "tag")
|
|
}
|
|
}
|
|
return p.xtakeall()
|
|
}
|
|
|
|
func (p *parser) xcommand() string {
|
|
for i, c := range p.upper[p.o:] {
|
|
if !(c >= 'A' && c <= 'Z' || c == ' ' && p.upper[p.o:p.o+i] == "UID") {
|
|
return p.xtake1n(i, "command")
|
|
}
|
|
}
|
|
return p.xtakeall()
|
|
}
|
|
|
|
func (p *parser) remainder() string {
|
|
return p.orig[p.o:]
|
|
}
|
|
|
|
// ../rfc/9051:6565
|
|
func (p *parser) xflag() string {
|
|
w, _ := p.takelist(`\`, "$")
|
|
s := w + p.xatom()
|
|
if s[0] == '\\' {
|
|
switch strings.ToLower(s) {
|
|
case `\answered`, `\flagged`, `\deleted`, `\seen`, `\draft`:
|
|
default:
|
|
p.xerrorf("unknown system flag %s", s)
|
|
}
|
|
}
|
|
return s
|
|
}
|
|
|
|
func (p *parser) xflagList() (l []string) {
|
|
p.xtake("(")
|
|
if !p.hasPrefix(")") {
|
|
l = append(l, p.xflag())
|
|
}
|
|
for !p.take(")") {
|
|
p.xspace()
|
|
l = append(l, p.xflag())
|
|
}
|
|
return
|
|
}
|
|
|
|
func (p *parser) xatom() string {
|
|
return p.xtakechars(atomChar, "atom")
|
|
}
|
|
|
|
func (p *parser) xmailbox() string {
|
|
s := p.xastring()
|
|
// UTF-7 is deprecated in IMAP4rev2. IMAP4rev1 does not fully forbid
|
|
// UTF-8 returned in mailbox names. We'll do our best by attempting to
|
|
// decode utf-7. But if that doesn't work, we'll just use the original
|
|
// string.
|
|
// ../rfc/3501:964
|
|
if !p.conn.enabled[capIMAP4rev2] {
|
|
ns, err := utf7decode(s)
|
|
if err != nil {
|
|
p.conn.log.Infox("decoding utf7 or mailbox name", err, mlog.Field("name", s))
|
|
} else {
|
|
s = ns
|
|
}
|
|
}
|
|
return s
|
|
}
|
|
|
|
// ../rfc/9051:6605
|
|
func (p *parser) xlistMailbox() string {
|
|
if p.hasPrefix(`"`) || p.hasPrefix("{") {
|
|
return p.xstring()
|
|
}
|
|
return p.xtakechars(atomChar+listWildcards+respSpecials, "list-char")
|
|
}
|
|
|
|
// ../rfc/9051:6707 ../rfc/9051:6848 ../rfc/5258:1095 ../rfc/5258:1169 ../rfc/5258:1196
|
|
func (p *parser) xmboxOrPat() ([]string, bool) {
|
|
if !p.take("(") {
|
|
return []string{p.xlistMailbox()}, false
|
|
}
|
|
l := []string{p.xlistMailbox()}
|
|
for !p.take(")") {
|
|
p.xspace()
|
|
l = append(l, p.xlistMailbox())
|
|
}
|
|
return l, true
|
|
}
|
|
|
|
// ../rfc/9051:7056
|
|
// RECENT only in ../rfc/3501:5047
|
|
// APPENDLIMIT is from ../rfc/7889:252
|
|
func (p *parser) xstatusAtt() string {
|
|
return p.xtakelist("MESSAGES", "UIDNEXT", "UIDVALIDITY", "UNSEEN", "DELETED", "SIZE", "RECENT", "APPENDLIMIT")
|
|
}
|
|
|
|
// ../rfc/9051:7133 ../rfc/9051:7034
|
|
func (p *parser) xnumSet() (r numSet) {
|
|
defer p.context("numSet")()
|
|
if p.take("$") {
|
|
return numSet{searchResult: true}
|
|
}
|
|
r.ranges = append(r.ranges, p.xnumRange())
|
|
for p.take(",") {
|
|
r.ranges = append(r.ranges, p.xnumRange())
|
|
}
|
|
return r
|
|
}
|
|
|
|
// parse numRange, which can be just a setNumber.
|
|
func (p *parser) xnumRange() (r numRange) {
|
|
if p.take("*") {
|
|
r.first.star = true
|
|
} else {
|
|
r.first.number = p.xnznumber()
|
|
}
|
|
if p.take(":") {
|
|
r.last = &setNumber{}
|
|
if p.take("*") {
|
|
r.last.star = true
|
|
} else {
|
|
r.last.number = p.xnznumber()
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// ../rfc/9051:6989 ../rfc/3501:4977
|
|
func (p *parser) xsectionMsgtext() (r *sectionMsgtext) {
|
|
defer p.context("sectionMsgtext")()
|
|
msgtextWords := []string{"HEADER.FIELDS.NOT", "HEADER.FIELDS", "HEADER", "TEXT"}
|
|
w := p.xtakelist(msgtextWords...)
|
|
r = §ionMsgtext{s: w}
|
|
if strings.HasPrefix(w, "HEADER.FIELDS") {
|
|
p.xspace()
|
|
p.xtake("(")
|
|
r.headers = append(r.headers, textproto.CanonicalMIMEHeaderKey(p.xastring()))
|
|
for {
|
|
if p.take(")") {
|
|
break
|
|
}
|
|
p.xspace()
|
|
r.headers = append(r.headers, textproto.CanonicalMIMEHeaderKey(p.xastring()))
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// ../rfc/9051:6999 ../rfc/3501:4991
|
|
func (p *parser) xsectionSpec() (r *sectionSpec) {
|
|
defer p.context("parseSectionSpec")()
|
|
|
|
n, ok := p.nznumber()
|
|
if !ok {
|
|
return §ionSpec{msgtext: p.xsectionMsgtext()}
|
|
}
|
|
defer p.context("part...")()
|
|
pt := §ionPart{}
|
|
pt.part = append(pt.part, n)
|
|
for {
|
|
if !p.take(".") {
|
|
break
|
|
}
|
|
if n, ok := p.nznumber(); ok {
|
|
pt.part = append(pt.part, n)
|
|
continue
|
|
}
|
|
if p.take("MIME") {
|
|
pt.text = §ionText{mime: true}
|
|
break
|
|
}
|
|
pt.text = §ionText{msgtext: p.xsectionMsgtext()}
|
|
break
|
|
}
|
|
return §ionSpec{part: pt}
|
|
}
|
|
|
|
// ../rfc/9051:6985 ../rfc/3501:4975
|
|
func (p *parser) xsection() *sectionSpec {
|
|
defer p.context("parseSection")()
|
|
p.xtake("[")
|
|
if p.take("]") {
|
|
return §ionSpec{}
|
|
}
|
|
r := p.xsectionSpec()
|
|
p.xtake("]")
|
|
return r
|
|
}
|
|
|
|
// ../rfc/9051:6841
|
|
func (p *parser) xpartial() *partial {
|
|
p.xtake("<")
|
|
offset := p.xnumber()
|
|
p.xtake(".")
|
|
count := p.xnznumber()
|
|
p.xtake(">")
|
|
return &partial{offset, count}
|
|
}
|
|
|
|
// ../rfc/9051:6987
|
|
func (p *parser) xsectionBinary() (r []uint32) {
|
|
p.xtake("[")
|
|
if p.take("]") {
|
|
return nil
|
|
}
|
|
r = append(r, p.xnznumber())
|
|
for {
|
|
if !p.take(".") {
|
|
break
|
|
}
|
|
r = append(r, p.xnznumber())
|
|
}
|
|
p.xtake("]")
|
|
return r
|
|
}
|
|
|
|
// ../rfc/9051:6557 ../rfc/3501:4751
|
|
func (p *parser) xfetchAtt() (r fetchAtt) {
|
|
defer p.context("fetchAtt")()
|
|
words := []string{
|
|
"ENVELOPE", "FLAGS", "INTERNALDATE", "RFC822.SIZE", "BODYSTRUCTURE", "UID", "BODY.PEEK", "BODY", "BINARY.PEEK", "BINARY.SIZE", "BINARY",
|
|
"RFC822.HEADER", "RFC822.TEXT", "RFC822", // older IMAP
|
|
}
|
|
f := p.xtakelist(words...)
|
|
r.peek = strings.HasSuffix(f, ".PEEK")
|
|
r.field = strings.TrimSuffix(f, ".PEEK")
|
|
|
|
switch r.field {
|
|
case "BODY":
|
|
if p.hasPrefix("[") {
|
|
r.section = p.xsection()
|
|
if p.hasPrefix("<") {
|
|
r.partial = p.xpartial()
|
|
}
|
|
}
|
|
case "BINARY":
|
|
r.sectionBinary = p.xsectionBinary()
|
|
if p.hasPrefix("<") {
|
|
r.partial = p.xpartial()
|
|
}
|
|
case "BINARY.SIZE":
|
|
r.sectionBinary = p.xsectionBinary()
|
|
}
|
|
return
|
|
}
|
|
|
|
// ../rfc/9051:6553 ../rfc/3501:4748
|
|
func (p *parser) xfetchAtts() []fetchAtt {
|
|
defer p.context("fetchAtts")()
|
|
|
|
fields := func(l ...string) []fetchAtt {
|
|
r := make([]fetchAtt, len(l))
|
|
for i, s := range l {
|
|
r[i] = fetchAtt{field: s}
|
|
}
|
|
return r
|
|
}
|
|
|
|
if w, ok := p.takelist("ALL", "FAST", "FULL"); ok {
|
|
switch w {
|
|
case "ALL":
|
|
return fields("FLAGS", "INTERNALDATE", "RFC822.SIZE", "ENVELOPE")
|
|
case "FAST":
|
|
return fields("FLAGS", "INTERNALDATE", "RFC822.SIZE")
|
|
case "FULL":
|
|
return fields("FLAGS", "INTERNALDATE", "RFC822.SIZE", "ENVELOPE", "BODY")
|
|
}
|
|
panic("missing case")
|
|
}
|
|
|
|
if !p.hasPrefix("(") {
|
|
return []fetchAtt{p.xfetchAtt()}
|
|
}
|
|
|
|
l := []fetchAtt{}
|
|
p.xtake("(")
|
|
for {
|
|
l = append(l, p.xfetchAtt())
|
|
if !p.take(" ") {
|
|
break
|
|
}
|
|
}
|
|
p.xtake(")")
|
|
return l
|
|
}
|
|
|
|
func xint(p *parser, s string) int {
|
|
v, err := strconv.ParseInt(s, 10, 32)
|
|
if err != nil {
|
|
p.xerrorf("bad int %q: %v", s, err)
|
|
}
|
|
return int(v)
|
|
}
|
|
|
|
func (p *parser) digit() (string, bool) {
|
|
if p.empty() {
|
|
return "", false
|
|
}
|
|
c := p.orig[p.o]
|
|
if c < '0' || c > '9' {
|
|
return "", false
|
|
}
|
|
s := p.orig[p.o : p.o+1]
|
|
p.o++
|
|
return s, true
|
|
}
|
|
|
|
func (p *parser) xdigit() string {
|
|
s, ok := p.digit()
|
|
if !ok {
|
|
p.xerrorf("expected digit")
|
|
}
|
|
return s
|
|
}
|
|
|
|
// ../rfc/9051:6492 ../rfc/3501:4695
|
|
func (p *parser) xdateDayFixed() int {
|
|
if p.take(" ") {
|
|
return xint(p, p.xdigit())
|
|
}
|
|
return xint(p, p.xdigit()+p.xdigit())
|
|
}
|
|
|
|
var months = []string{"jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"}
|
|
|
|
// ../rfc/9051:6495 ../rfc/3501:4698
|
|
func (p *parser) xdateMonth() time.Month {
|
|
s := strings.ToLower(p.xtaken(3))
|
|
for i, m := range months {
|
|
if m == s {
|
|
return time.Month(1 + i)
|
|
}
|
|
}
|
|
p.xerrorf("unknown month %q", s)
|
|
return 0
|
|
}
|
|
|
|
// ../rfc/9051:7120 ../rfc/3501:5067
|
|
func (p *parser) xtime() (int, int, int) {
|
|
h := xint(p, p.xtaken(2))
|
|
p.xtake(":")
|
|
m := xint(p, p.xtaken(2))
|
|
p.xtake(":")
|
|
s := xint(p, p.xtaken(2))
|
|
return h, m, s
|
|
}
|
|
|
|
// ../rfc/9051:7159 ../rfc/3501:5083
|
|
func (p *parser) xzone() (string, int) {
|
|
sign := p.xtakelist("+", "-")
|
|
s := p.xtaken(4)
|
|
v := xint(p, s)
|
|
seconds := (v/100)*3600 + (v%100)*60
|
|
if sign[0] == '-' {
|
|
seconds = -seconds
|
|
}
|
|
return sign + s, seconds
|
|
}
|
|
|
|
// ../rfc/9051:6502 ../rfc/3501:4713
|
|
func (p *parser) xdateTime() time.Time {
|
|
// DQUOTE date-day-fixed "-" date-month "-" date-year SP time SP zone DQUOTE
|
|
p.xtake(`"`)
|
|
day := p.xdateDayFixed()
|
|
p.xtake("-")
|
|
month := p.xdateMonth()
|
|
p.xtake("-")
|
|
year := xint(p, p.xtaken(4))
|
|
p.xspace()
|
|
hours, minutes, seconds := p.xtime()
|
|
p.xspace()
|
|
name, zoneSeconds := p.xzone()
|
|
p.xtake(`"`)
|
|
loc := time.FixedZone(name, zoneSeconds)
|
|
return time.Date(year, month, day, hours, minutes, seconds, 0, loc)
|
|
}
|
|
|
|
// ../rfc/9051:6655 ../rfc/7888:330 ../rfc/3501:4801
|
|
func (p *parser) xliteralSize(maxSize int64, lit8 bool) (size int64, sync bool) {
|
|
// todo: enforce that we get non-binary when ~ isn't present?
|
|
if lit8 {
|
|
p.take("~")
|
|
}
|
|
p.xtake("{")
|
|
size = p.xnumber64()
|
|
if maxSize > 0 && size > maxSize {
|
|
// ../rfc/7888:249
|
|
line := fmt.Sprintf("* BYE [ALERT] Max literal size %d is larger than allowed %d in this context", size, maxSize)
|
|
err := errors.New("literal too big")
|
|
panic(syntaxError{line, "TOOBIG", err.Error(), err})
|
|
}
|
|
|
|
sync = !p.take("+")
|
|
p.xtake("}")
|
|
p.xempty()
|
|
return size, sync
|
|
}
|
|
|
|
var searchKeyWords = []string{
|
|
"ALL", "ANSWERED", "BCC",
|
|
"BEFORE", "BODY",
|
|
"CC", "DELETED", "FLAGGED",
|
|
"FROM", "KEYWORD",
|
|
"NEW", "OLD", "ON", "RECENT", "SEEN",
|
|
"SINCE", "SUBJECT",
|
|
"TEXT", "TO",
|
|
"UNANSWERED", "UNDELETED", "UNFLAGGED",
|
|
"UNKEYWORD", "UNSEEN",
|
|
"DRAFT", "HEADER",
|
|
"LARGER", "NOT",
|
|
"OR",
|
|
"SENTBEFORE", "SENTON",
|
|
"SENTSINCE", "SMALLER",
|
|
"UID", "UNDRAFT",
|
|
}
|
|
|
|
// ../rfc/9051:6923 ../rfc/3501:4957
|
|
// differences: rfc 9051 removes NEW, OLD, RECENT and makes SMALLER and LARGER number64 instead of number.
|
|
func (p *parser) xsearchKey() *searchKey {
|
|
if p.take("(") {
|
|
sk := p.xsearchKey()
|
|
l := []searchKey{*sk}
|
|
for !p.take(")") {
|
|
p.xspace()
|
|
l = append(l, *p.xsearchKey())
|
|
}
|
|
return &searchKey{searchKeys: l}
|
|
}
|
|
|
|
w, ok := p.takelist(searchKeyWords...)
|
|
if !ok {
|
|
seqs := p.xnumSet()
|
|
return &searchKey{seqSet: &seqs}
|
|
}
|
|
|
|
sk := &searchKey{op: w}
|
|
switch sk.op {
|
|
case "ALL":
|
|
case "ANSWERED":
|
|
case "BCC":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "BEFORE":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "BODY":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "CC":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "DELETED":
|
|
case "FLAGGED":
|
|
case "FROM":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "KEYWORD":
|
|
p.xspace()
|
|
sk.atom = p.xatom()
|
|
case "NEW":
|
|
case "OLD":
|
|
case "ON":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "RECENT":
|
|
case "SEEN":
|
|
case "SINCE":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "SUBJECT":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "TEXT":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "TO":
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "UNANSWERED":
|
|
case "UNDELETED":
|
|
case "UNFLAGGED":
|
|
case "UNKEYWORD":
|
|
p.xspace()
|
|
sk.atom = p.xatom()
|
|
case "UNSEEN":
|
|
case "DRAFT":
|
|
case "HEADER":
|
|
p.xspace()
|
|
sk.headerField = p.xastring()
|
|
p.xspace()
|
|
sk.astring = p.xastring()
|
|
case "LARGER":
|
|
p.xspace()
|
|
sk.number = p.xnumber64()
|
|
case "NOT":
|
|
p.xspace()
|
|
sk.searchKey = p.xsearchKey()
|
|
case "OR":
|
|
p.xspace()
|
|
sk.searchKey = p.xsearchKey()
|
|
p.xspace()
|
|
sk.searchKey2 = p.xsearchKey()
|
|
case "SENTBEFORE":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "SENTON":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "SENTSINCE":
|
|
p.xspace()
|
|
sk.date = p.xdate()
|
|
case "SMALLER":
|
|
p.xspace()
|
|
sk.number = p.xnumber64()
|
|
case "UID":
|
|
p.xspace()
|
|
sk.uidSet = p.xnumSet()
|
|
case "UNDRAFT":
|
|
default:
|
|
p.xerrorf("missing case for op %q", sk.op)
|
|
}
|
|
return sk
|
|
}
|
|
|
|
// ../rfc/9051:6489 ../rfc/3501:4692
|
|
func (p *parser) xdateDay() int {
|
|
d := p.xdigit()
|
|
if s, ok := p.digit(); ok {
|
|
d += s
|
|
}
|
|
return xint(p, d)
|
|
}
|
|
|
|
// ../rfc/9051:6487 ../rfc/3501:4690
|
|
func (p *parser) xdate() time.Time {
|
|
dquote := p.take(`"`)
|
|
day := p.xdateDay()
|
|
p.xtake("-")
|
|
mon := p.xdateMonth()
|
|
p.xtake("-")
|
|
year := xint(p, p.xtaken(4))
|
|
if dquote {
|
|
p.take(`"`)
|
|
}
|
|
return time.Date(year, mon, day, 0, 0, 0, 0, time.UTC)
|
|
}
|
|
|
|
// ../rfc/9051:7090 ../rfc/4466:716
|
|
func (p *parser) xtaggedExtLabel() string {
|
|
return p.xtake1fn(func(i int, c rune) bool {
|
|
return c >= 'A' && c <= 'Z' || c == '-' || c == '_' || c == '.' || i > 0 && (c >= '0' && c <= '9' || c == ':')
|
|
})
|
|
}
|
|
|
|
// no return value since we don't currently use the value.
|
|
// ../rfc/9051:7111 ../rfc/4466:749
|
|
func (p *parser) xtaggedExtVal() {
|
|
if p.take("(") {
|
|
if p.take(")") {
|
|
return
|
|
}
|
|
p.xtaggedExtComp()
|
|
p.xtake(")")
|
|
} else {
|
|
p.xtaggedExtSimple()
|
|
}
|
|
}
|
|
|
|
// ../rfc/9051:7109 ../rfc/4466:747
|
|
func (p *parser) xtaggedExtSimple() {
|
|
s := p.digits()
|
|
if s == "" {
|
|
p.xnumSet()
|
|
}
|
|
|
|
// This can be a number64, or the start of a sequence-set. A sequence-set can also
|
|
// start with a number, but only an uint32. After the number we'll try to continue
|
|
// parsing as a sequence-set.
|
|
_, err := strconv.ParseInt(s, 10, 64)
|
|
if err != nil {
|
|
p.xerrorf("parsing int: %v", err)
|
|
}
|
|
|
|
if p.take(":") {
|
|
if !p.take("*") {
|
|
p.xnznumber()
|
|
}
|
|
}
|
|
for p.take(",") {
|
|
p.xnumRange()
|
|
}
|
|
}
|
|
|
|
// ../rfc/9051:7111 ../rfc/4466:735
|
|
func (p *parser) xtaggedExtComp() {
|
|
if p.take("(") {
|
|
p.xtaggedExtComp()
|
|
p.xtake(")")
|
|
return
|
|
}
|
|
p.xastring()
|
|
for p.space() {
|
|
p.xtaggedExtComp()
|
|
}
|
|
}
|