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NGImap4ResponseParser.m
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/*
Copyright (C) 2000-2007 SKYRIX Software AG
This file is part of SOPE.
SOPE is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
SOPE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
/bin/bash: 58: command not found
You should have received a copy of the GNU Lesser General Public
License along with SOPE; see the file COPYING. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#include "NGImap4ResponseParser.h"
#include "NGImap4Support.h"
#include "NGImap4Envelope.h"
#include "NGImap4EnvelopeAddress.h"
#include "imCommon.h"
// TODO(hh): code is now prepared for last-exception, but currently it just
// raises and may leak the exception object
@interface NGImap4ResponseParser(ParsingPrivates)
- (BOOL)_parseNumberUntaggedResponse:(NGMutableHashMap *)result_;
- (NSDictionary *)_parseBodyContent;
- (NSData *) _parseBodyHeaderFields;
- (NSData *)_parseData;
- (BOOL)_parseQuotaResponseIntoHashMap:(NGMutableHashMap *)result_;
- (void)_parseContinuationResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseListOrLSubResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseCapabilityResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseNamespaceResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseSearchResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseSortResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseQuotaRootResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseStatusResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseThreadResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseVanishedResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseByeUntaggedResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseACLResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseAnnotationResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseMyRightsResponseIntoHashMap:(NGMutableHashMap *)result_;
- (BOOL)_parseListRightsResponseIntoHashMap:(NGMutableHashMap *)result_;
- (NSArray *)_parseThread;
@end
@implementation NGImap4ResponseParser
#define __la(__SELF__, __PEEKPOS) \
((__SELF__->la == NULL) \
? [__SELF__->buffer la:__PEEKPOS]\
: __SELF__->la(__SELF__->buffer, @selector(la:), __PEEKPOS))
static __inline__ int _la(NGImap4ResponseParser *self, unsigned _laCnt) {
register unsigned char c = __la(self, _laCnt);
return (c == '\r')
? _la(self, _laCnt + 1)
: c;
}
static __inline__ BOOL _matchesString(NGImap4ResponseParser *self,
const char *s)
{
register unsigned int i;
for (i = 0; s[i] != '\0'; i++) {
if (_la(self, i) != s[i])
return NO;
}
return YES;
}
static NSDictionary *_parseBody(NGImap4ResponseParser *self,
BOOL isBodyStructure);
static NSDictionary *_parseSingleBody(NGImap4ResponseParser *self,
BOOL isBodyStructure);
static NSDictionary *_parseMultipartBody(NGImap4ResponseParser *self,
BOOL isBodyStructure);
static NSArray *_parseLanguages();
static NSString *_parseBodyString(NGImap4ResponseParser *self,
BOOL _convertString);
static NSString *_parseBodyDecodeString(NGImap4ResponseParser *self,
BOOL _convertString,
BOOL _decode);
static NSDictionary *_parseBodyParameterList(NGImap4ResponseParser *self);
static NSDictionary *_parseContentDisposition(NGImap4ResponseParser *self);
static NSArray *_parseAddressStructure(NGImap4ResponseParser *self);
static NSArray *_parseParenthesizedAddressList(NGImap4ResponseParser *self);
static int _parseTaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static void _parseUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static NSArray *_parseFlagArray(NGImap4ResponseParser *self);
static BOOL _parseEnabledUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseFlagsUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseOkUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseBadUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseNoUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static NSNumber *_parseUnsigned(NGImap4ResponseParser *self);
static NSString *_parseUntil(NGImap4ResponseParser *self, char _c);
static NSString *_parseUntil2(NGImap4ResponseParser *self, char _c1, char _c2);
static __inline__ NSException *_consumeIfMatch
(NGImap4ResponseParser *self, unsigned char _m);
static __inline__ void _consume(NGImap4ResponseParser *self, unsigned _cnt);
static void _parseSieveRespone(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseGreetingsSieveResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseDataSieveResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseOkSieveResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static BOOL _parseNoSieveResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_);
static NSString *_parseContentSieveResponse(NGImap4ResponseParser *self);
static NSString *_parseStringSieveResponse(NGImap4ResponseParser *self);
static unsigned int LaSize = 4097;
static unsigned UseMemoryMappedData = 0;
static unsigned Imap4MMDataBoundary = 0;
static BOOL debugOn = NO;
static BOOL debugDataOn = NO;
static NSStringEncoding encoding;
static Class StrClass = Nil;
static Class NumClass = Nil;
static Class DataClass = Nil;
static NSStringEncoding defCStringEncoding;
static NSNumber *YesNum = nil;
static NSNumber *NoNum = nil;
static NSNull *null = nil;
+ (void)initialize {
NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
static BOOL didInit = NO;
if (didInit) return;
didInit = YES;
null = [[NSNull null] retain];
encoding = [NGMimePartParser defaultHeaderFieldEncoding];
defCStringEncoding = [NSString defaultCStringEncoding];
debugOn = [ud boolForKey:@"ImapDebugEnabled"];
debugDataOn = [ud boolForKey:@"ImapDebugDataEnabled"];
UseMemoryMappedData = [ud boolForKey:@"NoMemoryMappedDataForImapBlobs"]?0:1;
Imap4MMDataBoundary = [ud integerForKey:@"Imap4MMDataBoundary"];
if (Imap4MMDataBoundary < 10)
/* Note: this should be larger than a usual header size! */
Imap4MMDataBoundary = 2 * LaSize;
StrClass = [NSString class];
NumClass = [NSNumber class];
DataClass = [NSData class];
YesNum = [[NumClass numberWithBool:YES] retain];
NoNum = [[NumClass numberWithBool:NO] retain];
}
+ (id)parserWithStream:(id<NGActiveSocket>)_stream {
NGImap4ResponseParser *parser;
parser = [NGImap4ResponseParser alloc]; /* seperate line to keep gcc happy */
return [[parser initWithStream:_stream] autorelease];
}
- (id)initWithStream:(id<NGActiveSocket>)_stream {
// designated initializer
if (_stream == nil) {
[self logWithFormat:@"%s: got no stream ...", __PRETTY_FUNCTION__];
[self release];
return nil;
}
if ((self = [super init])) {
id s;
s = [(NGBufferedStream *)[NGBufferedStream alloc] initWithSource:_stream];
self->buffer = [NGByteBuffer alloc];
self->buffer = [self->buffer initWithSource:s la:LaSize];
[s release];
if ([self->buffer respondsToSelector:@selector(methodForSelector:)])
self->la = (int(*)(id, SEL, unsigned))
[self->buffer methodForSelector:@selector(la:)];
self->debug = debugOn;
}
return self;
}
- (id)init {
[self release];
[NSException raise:@"InvalidUseOfMethodException"
format:
@"calling -init on the NGImap4ResponseParser is not allowed"];
return nil;
}
- (void)dealloc {
[self->buffer release];
if (self->debug)
[self->serverResponseDebug release];
[super dealloc];
}
/* exception handling */
- (void)setLastException:(NSException *)_exc {
// TODO: support last exception
[_exc raise];
}
/*
** Parse Sieve Responses
*/
- (NGHashMap *)parseSieveResponse {
NGMutableHashMap *result;
if (self->debug) {
if (self->serverResponseDebug != nil)
[self->serverResponseDebug release];
self->serverResponseDebug = [[NSMutableString alloc] initWithCapacity:512];
}
result = [NGMutableHashMap hashMapWithCapacity:64];
if (_la(self,0) == -1) {
[self setLastException:[self->buffer lastException]];
return nil;
}
_parseSieveRespone(self, result);
return result;
}
- (NGHashMap *)parseResponseForTagId:(int)_tag exception:(NSException **)ex_ {
/* parse a response from the server, _tag!=-1 parse until tagged response */
// TODO: is NGHashMap really necessary here?
BOOL endOfCommand;
NGMutableHashMap *result;
if (ex_) *ex_ = nil;
if (self->debug) {
[self->serverResponseDebug release]; self->serverResponseDebug = nil;
self->serverResponseDebug = [[NSMutableString alloc] initWithCapacity:512];
}
result = [NGMutableHashMap hashMapWithCapacity:64];
for (endOfCommand = NO; !endOfCommand; ) {
unsigned char l0;
l0 = _la(self, 0);
if (l0 == '*') { /* those starting with '* ' */
_parseUntaggedResponse(self, result);
if ([result objectForKey:@"bye"]) {
endOfCommand = YES;
}
else {
if (_tag == -1) {
if ([result objectForKey:@"ok"] != nil)
endOfCommand = YES;
}
}
}
else if (l0 == '+') { /* starting with a '+'? */
[self _parseContinuationResponseIntoHashMap:result];
endOfCommand = YES;
}
else if (isdigit(l0)) {
/* those starting with a number '24 ', eg '24 OK Completed' */
endOfCommand = (_parseTaggedResponse(self, result) == _tag);
}
else if (l0 == (unsigned char) -1) {
if (ex_) {
*ex_ = [self->buffer lastException];
if (!*ex_)
*ex_
= [NSException exceptionWithName:@"UnexpectedEndOfStream"
reason:(@"the parsed stream ended"
@" unexpectedly")
userInfo:nil];
} else {
[self setLastException: [self->buffer lastException]];
}
endOfCommand = YES;
result = nil;
}
}
return result;
}
- (NGHashMap *)parseResponseForTagId:(int)_tag {
// DEPRECATED
NSException *e = nil;
NGHashMap *hm;
hm = [self parseResponseForTagId:_tag exception:&e];
if (e) {
[self setLastException:e];
return nil;
}
return hm;
}
static void _parseSieveRespone(NGImap4ResponseParser *self,
NGMutableHashMap *result_)
{
if (_parseGreetingsSieveResponse(self, result_))
return;
if (_parseDataSieveResponse(self, result_)) // la: 1
return;
if (_parseOkSieveResponse(self, result_)) // la: 2
return;
if (_parseNoSieveResponse(self, result_)) // la: 2
return;
}
- (NSData *)_parseDataToFile:(unsigned)_size {
// TODO: move to own method
// TODO: do not use NGFileStream but just fopen/fwrite
static NSProcessInfo *Pi = nil;
NGFileStream *stream;
NSData *result;
unsigned char buf[LaSize + 2];
unsigned char tmpBuf[LaSize + 2];
unsigned wasRead = 0;
NSString *path;
signed char lastChar; // must be signed
if (debugDataOn) [self logWithFormat:@" using memory mapped data ..."];
if (Pi == nil)
Pi = [[NSProcessInfo processInfo] retain];
path = [Pi temporaryFileName];
stream = [NGFileStream alloc]; /* extra line to keep gcc happy */
stream = [stream initWithPath:path];
if (![stream openInMode:NGFileWriteOnly]) {
NSException *e;
e = [[NGImap4ParserException alloc]
initWithFormat:@"Could not open temporary file %@", path];
[self setLastException:[e autorelease]];
[self logWithFormat: [e reason]];
return nil;
}
lastChar = -1;
while (wasRead < _size) {
unsigned readCnt, bufCnt, tmpSize, cnt, tmpBufCnt;
bufCnt = 0;
if (lastChar != -1) {
buf[bufCnt++] = lastChar;
lastChar = -1;
}
[self->buffer la:(_size - wasRead < LaSize)
? (_size - wasRead)
: LaSize];
readCnt = [self->buffer readBytes:buf+bufCnt count:_size - wasRead];
wasRead+=readCnt;
bufCnt +=readCnt;
tmpSize = bufCnt - 1;
cnt = 0;
tmpBufCnt = 0;
while (cnt < tmpSize) {
if ((buf[cnt] == '\r') && (buf[cnt+1] == '\n')) {
cnt++;
}
tmpBuf[tmpBufCnt++] = buf[cnt++];
}
if (cnt < bufCnt) {
lastChar = buf[cnt];
}
[stream writeBytes:tmpBuf count:tmpBufCnt];
}
if (lastChar != -1)
[stream writeBytes:&lastChar count:1];
[stream close];
[stream release]; stream = nil;
result = [DataClass dataWithContentsOfMappedFile:path];
[[NSFileManager defaultManager] removeFileAtPath:path handler:nil];
return result;
}
- (NSData *)_parseDataIntoRAM:(unsigned)_size {
/* parses data into a RAM buffer (NSData) */
unsigned char *buf = NULL;
unsigned char *tmpBuf;
unsigned wasRead = 0;
unsigned cnt, tmpBufCnt, tmpSize;
NSData *result;
buf = calloc(_size + 10, sizeof(char));
while (wasRead < _size) {
[self->buffer la:(_size - wasRead < LaSize) ? (_size - wasRead) : LaSize];
wasRead += [self->buffer readBytes:(buf + wasRead) count:(_size-wasRead)];
}
/* normalize response \r\n -> \n */
tmpBuf = calloc(_size + 10, sizeof(char));
cnt = 0;
tmpBufCnt = 0;
tmpSize = _size == 0 ? 0 : _size - 1;
while (tmpBufCnt < tmpSize && cnt < _size) {
if ((buf[cnt] == '\r') && (buf[cnt + 1] == '\n'))
cnt++; /* skip \r */
tmpBuf[tmpBufCnt] = buf[cnt];
tmpBufCnt++;
cnt++;
}
if (cnt < _size) {
tmpBuf[tmpBufCnt] = buf[cnt];
tmpBufCnt++;
cnt++;
}
result = [DataClass dataWithBytesNoCopy:tmpBuf length:tmpBufCnt];
if (buf != NULL) free(buf); buf = NULL;
return result;
}
- (NSData *)_parseData {
/*
parses:
{ <uint> } \n
*/
// TODO: split up method
unsigned size;
NSNumber *sizeNum;
if (_la(self, 0) != '{')
return nil;
if (debugDataOn) [self logWithFormat:@"parse data ..."];
/* got header */
_consume(self, 1); // '{'
if ((sizeNum = _parseUnsigned(self)) == nil) {
NSException *e;
e = [[NGImap4ParserException alloc]
initWithFormat:@"expect a number between {}"];
[self setLastException:[e autorelease]];
return nil;
}
if (debugDataOn) [self logWithFormat:@" parse data, size: %@", sizeNum];
_consumeIfMatch(self, '}');
_consumeIfMatch(self, '\n');
if ((size = [sizeNum intValue]) == 0) {
[self logWithFormat:@"ERROR(%s): got content size '0'!",
__PRETTY_FUNCTION__];
return nil;
}
if (UseMemoryMappedData && (size > Imap4MMDataBoundary))
return [self _parseDataToFile:size];
return [self _parseDataIntoRAM:size];
}
/*
Similair to _parseData but used to parse something like this :
BODY[HEADER.FIELDS (X-PRIORITY)] {17}
X-Priority: 1
)
Headers are returned as data, as is.
*/
- (NSData *) _parseBodyHeaderFields
{
NSData *result;
unsigned size;
NSNumber *sizeNum;
result = nil;
/* We skip until we're ready to parse {length}. We must be careful
here and not assume we will have a valid length - we could very
well receive NIL from the server */
_parseUntil(self, ' ');
if ((_la(self,0)) == '{')
{
_consume(self, 1);
if ((sizeNum = _parseUnsigned(self)) == nil) {
NSException *e;
e = [[NGImap4ParserException alloc]
initWithFormat:@"expect a number between {}"];
[self setLastException:[e autorelease]];
return nil;
}
_consumeIfMatch(self, '}');
_consumeIfMatch(self, '\n');
if ((size = [sizeNum intValue]) == 0) {
[self logWithFormat:@"ERROR(%s): got content size '0'!",
__PRETTY_FUNCTION__];
return nil;
}
if (UseMemoryMappedData && (size > Imap4MMDataBoundary))
return [self _parseDataToFile:size];
return [self _parseDataIntoRAM:size];
}
return result;
}
static int _parseTaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_)
{
NSDictionary *d;
NSNumber *tag = nil;
NSString *res = nil;
NSString *desc = nil;
NSString *flag = nil;
if ((tag = _parseUnsigned(self)) == nil) {
NSException *e;
if (self->debug) {
e = [[NGImap4ParserException alloc]
initWithFormat:@"expect a number at begin of tagged response <%@>",
self->serverResponseDebug];
}
else {
e = [[NGImap4ParserException alloc]
initWithFormat:@"expect a number at begin of tagged response"];
}
e = [e autorelease];
[self setLastException:e];
return -1;
}
_consumeIfMatch(self, ' ');
res = [_parseUntil(self, ' ') lowercaseString];
if (_la(self, 0) == '[') { /* Found flag like [READ-ONLY] */
_consume(self, 1);
flag = _parseUntil(self, ']');
}
desc = _parseUntil(self, '\n');
/*
ATTENTION: if no flag was set, flag == nil, in this case all key-value
pairs after flag will be ignored
*/
d = [[NSDictionary alloc] initWithObjectsAndKeys:
tag, @"tagId",
res, @"result",
desc, @"description",
flag, @"flag", nil];
[result_ addObject:d forKey:@"ResponseResult"];
[d release];
return [tag intValue];
}
static void _parseUntaggedResponse(NGImap4ResponseParser *self,
NGMutableHashMap *result_)
{
// TODO: is it really required by IMAP4 that responses are uppercase?
// TODO: apparently this code *breaks* with lowercase detection on!
unsigned char l0, l1 = 0;
_consumeIfMatch(self, '*');
_consumeIfMatch(self, ' ');
l0 = _la(self, 0);
switch (l0) {
case 'A':
l1 = _la(self, 1);
if (l1 == 'C' && [self _parseACLResponseIntoHashMap:result_])
return;
if (l1 == 'N' && [self _parseAnnotationResponseIntoHashMap:result_])
return;
break;
case 'B':
l1 = _la(self, 1);
if (l1 == 'A' && _parseBadUntaggedResponse(self, result_)) // la: 3
return;
if (l1 == 'Y' && [self _parseByeUntaggedResponseIntoHashMap:result_]) // 3
return;
break;
case 'C':
if ([self _parseCapabilityResponseIntoHashMap:result_]) // la: 10
return;
break;
case 'E':
if (_parseEnabledUntaggedResponse(self, result_)) // la: 7
return;
break;
case 'F':
if (_parseFlagsUntaggedResponse(self, result_)) // la: 5
return;
break;
// ID untagged response
case 'I':
_parseUntil(self, '\n');
return;
case 'L':
if (_matchesString(self, "LISTRIGHTS")) {
if ([self _parseListRightsResponseIntoHashMap:result_])
return;
}
if ([self _parseListOrLSubResponseIntoHashMap:result_]) // la: 4
return;
break;
case 'M':
if ([self _parseMyRightsResponseIntoHashMap:result_])
return;
break;
case 'N':
if (_matchesString(self, "NAMESPACE")) {
if ([self _parseNamespaceResponseIntoHashMap:result_])
return;
}
if (_parseNoUntaggedResponse(self, result_)) // la: 2
return;
break;
case 'O':
if (_parseOkUntaggedResponse(self, result_)) // la: 2
/* eg "* OK Completed" */
return;
break;
case 'R':
break;
case 'S':
switch (_la(self, 1)) {
case 'O': // SORT
if ([self _parseSortResponseIntoHashMap:result_]) // la: 4
return;
break;
case 'E': // SEARCH
if ([self _parseSearchResponseIntoHashMap:result_]) // la: 5
return;
break;
case 'T': // STATUS
if ([self _parseStatusResponseIntoHashMap:result_]) // la: 6
/* eg "* STATUS INBOX (MESSAGES 0 RECENT 0 UNSEEN 0)" */
return;
break;
}
break;
case 'T':
if ([self _parseThreadResponseIntoHashMap:result_]) // la: 6
return;
break;
case 'V':
if ([self _parseVanishedResponseIntoHashMap:result_]) // la: 6
return;
break;
case 'Q':
if ([self _parseQuotaResponseIntoHashMap:result_]) // la: 6
return;
if ([self _parseQuotaRootResponseIntoHashMap:result_]) // la: 10
return;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if ([self _parseNumberUntaggedResponse:result_]) // la: 5
/* eg "* 928 FETCH ..." */
return;
break;
}
// TODO: what if none matches?
[self logWithFormat:@"%s: no matching tag specifier?", __PRETTY_FUNCTION__];
[self logWithFormat:@" line: '%@'", _parseUntil(self, '\n')];
}
- (void)_parseContinuationResponseIntoHashMap:(NGMutableHashMap *)result_ {
_consumeIfMatch(self, '+');
_consumeIfMatch(self, ' ');
[result_ addObject:YesNum forKey:@"ContinuationResponse"];
[result_ addObject:_parseUntil(self, '\n') forKey:@"description"];
}
static inline void
_purifyQuotedString(NSMutableString *quotedString) {
unichar *currentChar, *qString, *maxC, *startC;
unsigned int max, questionMarks;
BOOL possiblyQuoted, skipSpaces;
NSMutableString *newString;
newString = [NSMutableString string];
max = [quotedString length];
qString = malloc (sizeof (unichar) * max);
[quotedString getCharacters: qString];
currentChar = qString;
startC = qString;
maxC = qString + max;
possiblyQuoted = NO;
skipSpaces = NO;
questionMarks = 0;
while (currentChar < maxC) {
if (possiblyQuoted) {
if (questionMarks == 2) {
if ((*currentChar == 'Q' || *currentChar == 'q'
|| *currentChar == 'B' || *currentChar == 'b')
&& ((currentChar + 1) < maxC
&& (*(currentChar + 1) == '?'))) {
currentChar++;
questionMarks = 3;
}
else {
possiblyQuoted = NO;
}
}
else if (questionMarks == 4) {
if (*currentChar == '=') {
skipSpaces = YES;
possiblyQuoted = NO;
currentChar++;
[newString appendString: [NSString stringWithCharacters: startC
length: (currentChar - startC)]];
startC = currentChar;
}
else {
possiblyQuoted = NO;
}
}
else {
if (*currentChar == '?') {
questionMarks++;
}
else if (*currentChar == ' ' && questionMarks != 3) {
possiblyQuoted = NO;
}
}
}
else if (*currentChar == '='
&& ((currentChar + 1) < maxC
&& (*(currentChar + 1) == '?'))) {
[newString appendString: [NSString stringWithCharacters: startC
length: (currentChar - startC)]];
startC = currentChar;
possiblyQuoted = YES;
skipSpaces = NO;
currentChar++;
questionMarks = 1;
}
if (skipSpaces) {
/* This part is about skipping the spaces separating two encoded chunks,
which occurs when the chunks are on different lines. However we
cannot ignore them if the next chunk is not encoded. Basically, we
can deduce a case from the other by the fact that it makes no sense
per se to have a space separating two encoded chunks. */
startC = currentChar;
while (currentChar < maxC
&& (*currentChar == ' ' || *currentChar == '\t'))
currentChar++;
if (currentChar != startC) {
if (currentChar < maxC && *currentChar != '=')
[newString appendString: [NSString stringWithCharacters: startC
length: (currentChar - startC)]];
startC = currentChar;
}
else
currentChar++;
skipSpaces = NO;
}
else
currentChar++;
}
if (startC < maxC)
[newString appendString: [NSString stringWithCharacters: startC
length: (currentChar - startC)]];
[quotedString setString: newString];
free (qString);
}
- (NSString *)_parseQuotedString {
NSMutableString *quotedString;
NSString *tmpString;
/* parse a quoted string, eg '"' */
if (_la(self, 0) == '"') {
_consume(self, 1);
quotedString = [NSMutableString string];
tmpString = _parseUntil(self, '"');
[quotedString appendString: tmpString];
}
else {
quotedString = nil;
}
_purifyQuotedString(quotedString);
return quotedString;
}
- (NSString *)_parseQuotedStringOrNIL {
unsigned char c0;
if ((c0 = _la(self, 0)) == '"')
return [self _parseQuotedString];
if (c0 == '{') {
/* a size indicator, eg '{112}\nkasdjfkja sdj fhj hasdfj hjasdf' */
NSData *data;
NSString *s;
if ((data = [self _parseData]) == nil)
return nil;
if (![data isNotEmpty])
return @"";
s = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if (s == nil)
s = [[NSString alloc] initWithData:data encoding:NSISOLatin1StringEncoding];
if (s == nil) {
[self logWithFormat:
@"ERROR(%s): could not convert data (%d bytes) into string.",
__PRETTY_FUNCTION__, [data length]];
return @"[ERROR: NGImap4 could not parse IMAP4 data string]";
}
return [s autorelease];
}
if (c0 == 'N' && _matchesString(self, "NIL")) {
_consume(self, 3);
return (id)null;
}
return nil;
}
- (id)_parseQuotedStringOrDataOrNIL {
if (_la(self, 0) == '"')
return [self _parseQuotedString];
if (_la(self, 0) == '{')
return [self _parseData];
if (_matchesString(self, "NIL")) {
_consume(self, 3);
return null;
}
return nil;
}
- (void)_consumeOptionalSpace {
if (_la(self, 0) == ' ') _consume(self, 1);
}
- (BOOL)_parseListOrLSubResponseIntoHashMap:(NGMutableHashMap *)result_ {
NSArray *flags = nil;
NSString *delim = nil;
NSString *name = nil;
NSDictionary *d;
if (!_matchesString(self, "LIST ") && !_matchesString(self, "LSUB "))
return NO;
_consume(self, 5); /* consume 'LIST ' or 'LSUB ' */
flags = _parseFlagArray(self);
_consumeIfMatch(self, ' ');
if (_la(self, 0) == '"') {
delim = [self _parseQuotedString];
_consumeIfMatch(self, ' ');
}
else {
_parseUntil(self, ' ');
delim = nil;
}
if (_la(self, 0) == '"') {
name = [self _parseQuotedString];
_parseUntil(self, '\n');
}
else if (_la(self, 0) == '{') {
name = [self _parseQuotedStringOrNIL];
_parseUntil(self, '\n');
}
else
name = _parseUntil(self, '\n');
d = [[NSDictionary alloc] initWithObjectsAndKeys:
name, @"folderName",
flags, @"flags",
delim, @"delimiter", nil];
[result_ addObject:d forKey:@"list"];
[d release];
return YES;
}
- (BOOL)_parseCapabilityResponseIntoHashMap:(NGMutableHashMap *)result_ {
NSString *caps;
NSEnumerator *enumerator;
id obj;
NSMutableArray *array;
NSArray *tmp;
if (!_matchesString(self, "CAPABILITY "))
return NO;
caps = _parseUntil(self, '\n');
array = [[NSMutableArray alloc] initWithCapacity:16];
enumerator = [[caps componentsSeparatedByString:@" "] objectEnumerator];
while ((obj = [enumerator nextObject]) != nil)
[array addObject:[obj lowercaseString]];
tmp = [array copy];
[result_ addObject:tmp forKey:@"capability"];
[array release]; array = nil;
[tmp release]; tmp = nil;
return YES;
}
/* support for NAMESPACE extension - RFC2342 */
- (NSDictionary *)_parseNamespacePart {
NSDictionary *namespacePart;
NSString *prefix, *key, *delimiter;
NSMutableDictionary *parameters;
NSMutableArray *values;
_consume(self, 1); /* ( */
prefix = [self _parseQuotedStringOrNIL]; /* "prefix" */
_consume(self, 1); /* <sp> */
delimiter = [self _parseQuotedStringOrNIL]; /* "delimiter" */
parameters = [NSMutableDictionary dictionary];
while (_la(self, 0) == ' ') {
_consume(self, 1); /* <sp> */
key = [self _parseQuotedString];
_consume(self, 1); /* <sp> */
values = [NSMutableArray new];
while (_la(self, 0) != ')') {
_consume(self, 1); /* ( or <sp> */
[values addObject: [self _parseQuotedString]];
}
_consume(self, 1); /* ) */
[parameters setObject: values forKey: key];
[values release];
}
_consume(self, 1); /* ) */
namespacePart = [NSDictionary dictionaryWithObjectsAndKeys:
prefix, @"prefix",