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/*
Copyright (C) 2000-2007 SKYRIX Software AG
Copyright (C) 2007 Helge Hess
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
License for more details.
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 "NGImap4ResponseNormalizer.h"
#include "NGImap4Client.h"
#include "imCommon.h"
@interface NGImap4Client(UsedPrivates)
- (NSString *)delimiter;
- (NSString *)_imapFolder2Folder:(NSString *)_folder;
@end
@implementation NGImap4ResponseNormalizer
static __inline__ NSArray *
_imapFlags2Flags(NGImap4ResponseNormalizer *, NSArray *);
static NSDictionary *VersionPrefixDict = nil;
static NSNumber *YesNumber = nil;
static NSNumber *NoNumber = nil;
static Class DictClass = Nil;
static Class StrClass = Nil;
static int LogImapEnabled = -1;
+ (void)initialize {
NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
static BOOL didInit = NO;
if (didInit) return;
didInit = YES;
YesNumber = [[NSNumber numberWithBool:YES] retain];
NoNumber = [[NSNumber numberWithBool:NO] retain];
DictClass = [NSDictionary class];
StrClass = [NSString class];
LogImapEnabled = [ud boolForKey:@"ImapLogEnabled"]?1:0;
/*
cyrus - * OK defiant Cyrus IMAP4 v2.0.16 server ready
courier - * OK Courier-IMAP ready. Copyright 1998-2002 Double
Precision, Inc. See COPYING for distribution information.
*/
if (VersionPrefixDict == nil) {
VersionPrefixDict =
[[DictClass alloc] initWithObjectsAndKeys:
@"cyrus imap4 v", @"cyrus",
@" imap4rev1 ", @"washington",
@"courier", @"courier", nil];
}
}
- (id)initWithClient:(NGImap4Client *)_client {
if ((self = [super init])) {
self->client = _client; /* non-retained */
}
return self;
}
/* primary */
- (NSMutableDictionary *)normalizeResponse:(NGHashMap *)_map {
/*
Filter for all responses
result : NSNumber (response result)
exists : NSNumber (number of exists mails in selected folder
recent : NSNumber (number of recent mails in selected folder
expunge : NSArray (message sequence number of expunged mails in selected
folder)
*/
NSMutableDictionary *result;
id obj;
NSDictionary *respRes;
if (_map == nil)
return (id)[NSMutableDictionary dictionary];
respRes = [[_map objectEnumeratorForKey:@"ResponseResult"] nextObject];
result = [NSMutableDictionary dictionaryWithCapacity:32];
[result setObject:_map forKey:@"RawResponse"];
if ((obj = [_map objectForKey:@"bye"])) {
[result setObject:NoNumber forKey:@"result"];
[result setObject:obj forKey:@"reason"];
[self->client closeConnection];
return result;
}
if ([[respRes objectForKey:@"result"] isEqual:@"ok"]) {
[result setObject:YesNumber forKey:@"result"];
}
else {
id tmp = nil;
[result setObject:NoNumber forKey:@"result"];
if ((tmp = [respRes objectForKey:@"description"]) != nil) {
[result setObject:tmp forKey:@"reason"];
}
return result;
}
if ((obj = [[_map objectEnumeratorForKey:@"exists"] nextObject]) != nil) { //
[result setObject:obj forKey:@"exists"];
}
if ((obj = [[_map objectEnumeratorForKey:@"recent"] nextObject]) != nil) {
[result setObject:obj forKey:@"recent"];
}
if ((obj = [_map objectsForKey:@"expunge"]) != nil)
[result setObject:obj forKey:@"expunge"];
return result;
}
- (NSDictionary *)normalizeSortResponse:(NGHashMap *)_map {
/* filter for sort response (search : NSArray (msn)) */
id obj;
NSMutableDictionary *result;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"sort"] nextObject]) != nil)
[result setObject:obj forKey:@"sort"];
return result;
}
- (NSDictionary *)normalizeCapabilityResponse:(NGHashMap *)_map {
/* filter for capability response: capability : NSArray */
id obj;
NSMutableDictionary *result;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"capability"] nextObject]))
[result setObject:obj forKey:@"capability"];
return result;
}
- (NSArray *)_normalizeNamespace:(NSArray *)_namespace {
NSMutableArray *result;
NSDictionary *currentNS;
NSMutableDictionary *newNS;
NSString *newPrefix;
int count, max;
max = [_namespace count];
result = [NSMutableArray arrayWithCapacity: max];
for (count = 0; count < max; count++) {
currentNS = [_namespace objectAtIndex: count];
newNS = [currentNS mutableCopy];
newPrefix = [self->client
_imapFolder2Folder: [currentNS objectForKey: @"prefix"]];
[newNS setObject: newPrefix forKey: @"prefix"];
[result addObject: newNS];
[newNS release];
}
return result;
}
- (NSDictionary *)normalizeNamespaceResponse:(NGHashMap *)_map {
NSMutableDictionary *result;
NSDictionary *rawResponse;
NSArray *namespace;
result = [self normalizeResponse:_map];
rawResponse = [result objectForKey: @"RawResponse"];
namespace = [rawResponse objectForKey: @"personal"];
if (namespace)
[result setObject: [self _normalizeNamespace: namespace]
forKey: @"personal"];
namespace = [rawResponse objectForKey: @"other users"];
if (namespace)
[result setObject: [self _normalizeNamespace: namespace]
forKey: @"other users"];
namespace = [rawResponse objectForKey: @"shared"];
if (namespace)
[result setObject: [self _normalizeNamespace: namespace]
forKey: @"shared"];
return result;
}
- (NSDictionary *)normalizeThreadResponse:(NGHashMap *)_map {
/* filter for thread response: thread : NSArray (msn) */
id obj;
NSMutableDictionary *result;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"thread"] nextObject]))
[result setObject:obj forKey:@"thread"];
return result;
}
- (NSDictionary *)normalizeSearchResponse:(NGHashMap *)_map {
/* filter for search response: search : NSArray (msn) */
id obj;
NSMutableDictionary *result;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"search"] nextObject]))
[result setObject:obj forKey:@"search"];
return result;
}
- (NSDictionary *)normalizeSelectResponse:(NGHashMap *)_map {
/*
filter for select response
flags : NSArray
unseen : NSNumber
access : NSString ([READ-WRITE], ... )
Eg:
17 select "INBOX"
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)]
* OK (seen state failure) Unable to preserve \Seen state: System I/O \
error
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1016867500]
* OK [UIDNEXT 18948]
* OK [NOMODSEQ] Sorry, modsequences have not been enabled on this \
mailbox
17 OK [READ-WRITE] Completed
*/
NSDictionary *obj;
NSEnumerator *enumerator;
NSMutableDictionary *result;
id flags;
result = [self normalizeResponse:_map];
if ((flags = [[_map objectEnumeratorForKey:@"flags"] nextObject]) != nil)
[result setObject:_imapFlags2Flags(self, flags) forKey:@"flags"];
// TODO: document the contents of this dictionary
enumerator = [_map objectEnumeratorForKey:@"ok"];
while ((obj = [enumerator nextObject]) != nil) {
id o;
if ([obj isKindOfClass:DictClass]) {
if ((o = [obj objectForKey:@"unseen"]))
[result setObject:o forKey:@"unseen"];
}
else
[self warnWithFormat:@"unexpected OK object: %@", obj];
}
enumerator = [_map objectEnumeratorForKey:@"no"];
while ((obj = [enumerator nextObject]) != nil) {
id o;
// TODO: document this
if ([obj isKindOfClass:DictClass]) {
if ((o = [obj objectForKey:@"ALERT"]) != nil)
[result setObject:o forKey:@"alert"];
}
else // TODO: this looks wrong, its not safe that this is the ALERT result?
[result setObject:obj forKey:@"alert"];
}
obj = [_map objectForKey:@"ResponseResult"];
if ((obj = [obj objectForKey:@"flag"]))
[result setObject:obj forKey:@"access"];
return result;
}
- (NSDictionary *)normalizeStatusResponse:(NGHashMap *)_map {
/*
filter for status response
messages : NSNumber
recent : NSNumber
unseen : NSNumber
*/
NSDictionary *obj;
NSMutableDictionary *result;
id o;
result = [self normalizeResponse:_map];
obj = [[_map objectEnumeratorForKey:@"status"] nextObject];
obj = [obj objectForKey:@"flags"];
if ((o = [obj objectForKey:@"messages"]) != nil)
[result setObject:o forKey:@"messages"];
if ((o = [obj objectForKey:@"recent"]) != nil) {
if ([result objectForKey:@"recent"] == nil)
[result setObject:o forKey:@"recent"];
}
if ((o = [obj objectForKey:@"unseen"]) != nil)
[result setObject:o forKey:@"unseen"];
return result;
}
/*
filter for fetch response
fetch : NSArray (fetch responses)
'header' - RFC822.HEADER and BODY[HEADER.FIELDS (...)]
'text' - RFC822.TEXT
'size' - SIZE
'flags' - FLAGS
'uid' - UID
'msn' - message sequence number
'message' - RFC822
'body' - (dictionary with bodystructure)
This walks over all 'fetch' responses in the map and adds a 'normalized'
dictionary for each response to the 'fetch' key of the normalized response
dictionary (as retrieved by 'normalizeResponse')
*/
- (NSDictionary *)normalizeFetchResponsePart:(id)obj {
// TODO: shouldn't we use a specific object instead of NSDict for that?
NSDictionary *entry;
NSEnumerator *keyEnum;
NSString *key;
NSString *keys[9];
id values[9];
unsigned count;
id (*objForKey)(id, SEL, id);
/*
Process one 'fetch' reponse dictionary, walk over each key of the
dict and check for a collection of known response keys.
*/
count = 0;
keyEnum = [obj keyEnumerator];
objForKey = (void *)[obj methodForSelector:@selector(objectForKey:)];
// TODO: this should add some error handling wrt the count?
// TODO: this could return multiple values for the same key?! => fix that
while (((key = [keyEnum nextObject]) != nil) && (count < 9)) {
unsigned klen;
unichar c;
if ((klen = [key length]) < 3)
continue;
c = [key characterAtIndex:0];
switch (c) {
case 'b':
/* Note: we check for _prefix_! eg body[1] is valid too */
if (klen > 17 && [key hasPrefix:@"body[header.fields"]) {
keys[count] = @"header";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
else if (klen > 3 && [key hasPrefix:@"body"]) {
keys[count] = key;
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
case 'e':
if (klen == 8 && [key isEqualToString:@"envelope"]) {
keys[count] = @"envelope";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
case 'f':
if (klen == 5 && [key isEqualToString:@"flags"]) {
id rawFlags;
rawFlags = objForKey(obj, @selector(objectForKey:), key);
keys[count] = @"flags";
values[count] = _imapFlags2Flags(self, rawFlags);
count++;
}
break;
case 'm':
if (klen == 3 && [key isEqualToString:@"msn"]) {
keys[count] = @"msn";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
else if (klen == 6 && [key isEqualToString:@"modseq"]) {
keys[count] = @"modseq";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
case 'r':
if (klen == 6 && [key isEqualToString:@"rfc822"]) {
keys[count] = @"message";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
else if (klen == 13 && [key isEqualToString:@"rfc822.header"]) {
keys[count] = @"header";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
else if (klen == 11 && [key isEqualToString:@"rfc822.text"]) {
keys[count] = @"text";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
else if (klen == 11 && [key isEqualToString:@"rfc822.size"]) {
keys[count] = @"size";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
case 'u':
if (klen == 3 && [key isEqualToString:@"uid"]) {
keys[count] = @"uid";
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
case 'v':
if ([key isEqualToString:@"vanished"]) {
keys[count] = key;
values[count] = objForKey(obj, @selector(objectForKey:), key);
count++;
}
break;
}
}
/* create dictionary */
entry = count > 0
? [[DictClass alloc] initWithObjects:values forKeys:keys count:count]
: nil;
return entry; /* returns retained object! */
}
- (NSDictionary *)normalizeFetchResponse:(NGHashMap *)_map {
/*
Raw Sample (Courier):
C[0x8b4e754]: 27 uid fetch 635 (body)
S[0x8c8b4e4]: * 627 FETCH (UID 635 BODY
("text" "plain" ("charset" "iso-8859-1" "format" "flowed")
NIL NIL "8bit" 2474 51))
S[0x8c8b4e4]: * 627 FETCH (FLAGS (\Seen))
S[0x8c8b4e4]: 27 OK FETCH completed.
- this results in two result records (one for UID and one for FLAGS)
TODO: should we coalesce?
Raw Sample (Cyrus):
C[0x8c8ec64]: 14 uid fetch 20199 (body)
S[0x8da46a4]: * 93 FETCH (UID 20199 BODY
((("TEXT" "PLAIN" ("CHARSET" "utf-8") NIL "signed data" "7BIT" 691 17)
("APPLICATION" "PKCS7-SIGNATURE" ("NAME" "smime.p7s") NIL
"signature" "BASE64" 2936) "SIGNED")
("TEXT" "PLAIN" ("CHARSET" "us-ascii") NIL NIL "7BIT" 146 4)
"MIXED"))
S[0x8da46a4]: 14 OK Completed
- UID key is mapped to 'uid'
- BODY key is mapped to a nested body structure
- MSN is added for the '93'? (TODO: make sure this is the case)
Sample returns (not for the above code!):
{
// other message stuff
fetch = (
{
header = < NSData containing the header >;
size = 3314;
uid = 20187;
msn = 72;
flags = ( answered, deleted, seen );
},
... for each fetch message ...
)
}
*/
NSMutableDictionary *result;
id obj;
NSEnumerator *enumerator;
NSMutableArray *fetchResponseRecords, *fetchResponseVanishedRecords;
// TODO: describe what the generic normalize does.
// Q: do we need to run this before the following section or can we
// call this method just before [result setObject:...] ? (I guess
// the latter, because 'result' is not accessed, but who knows
// about side effects in this JR cruft :-( )
result = [self normalizeResponse:_map];
fetchResponseRecords = [[NSMutableArray alloc] initWithCapacity:512];
/* walk over each response tag which is keyed by 'fetch' in the hashmap */
enumerator = [_map objectEnumeratorForKey:@"fetch"];
while ((obj = [enumerator nextObject]) != nil) {
NSDictionary *entry;
if ((entry = [self normalizeFetchResponsePart:obj]) == nil)
continue;
[fetchResponseRecords addObject:entry];
[entry release]; entry = nil;
}
/* make response array immutable and add to normalized result */
obj = [fetchResponseRecords copy];
[fetchResponseRecords release];
[result setObject:obj forKey:@"fetch"];
[obj release];
/* walk over each response tag which is keyed by 'vanished' in the hashmap */
fetchResponseVanishedRecords = [[NSMutableArray alloc] initWithCapacity:512];
enumerator = [_map objectEnumeratorForKey:@"vanished"];
while ((obj = [enumerator nextObject]) != nil) {
[fetchResponseVanishedRecords addObjectsFromArray:obj];
}
/* add response array to normalized result */
[result setObject:fetchResponseVanishedRecords forKey:@"vanished"];
[fetchResponseVanishedRecords release];
return result;
}
- (NSDictionary *)normalizeQuotaResponse:(NGHashMap *)_map {
/* filter for quota responses */
NSMutableDictionary *result, *quotaRoot, *quota, *tmp;
id obj;
NSEnumerator *enumerator;
result = [self normalizeResponse:_map];
quotaRoot = [_map objectForKey:@"quotaRoot"];
quota = [_map objectForKey:@"quota"];
enumerator = [quotaRoot keyEnumerator];
tmp = [NSMutableDictionary dictionaryWithCapacity:[quota count]];
while ((obj = [enumerator nextObject])) {
NSString *qRoot;
NSDictionary *qDesc;
qRoot = [quotaRoot objectForKey:obj];
if (![qRoot isNotEmpty]) {
if (LogImapEnabled) {
[self logWithFormat:@"%s: missing quotaroot for %@",
__PRETTY_FUNCTION__, obj];
}
continue;
}
qDesc = [quota objectForKey:qRoot];
if ([qDesc count] == 0) {
if (LogImapEnabled) {
[self logWithFormat:@"%s: missing quota description for"
@" folder %@ root %@",
__PRETTY_FUNCTION__, obj, qRoot];
}
continue;
}
[tmp setObject:qDesc forKey:[self->client _imapFolder2Folder:obj]];
}
[result setObject:tmp forKey:@"quotas"];
return result;
}
/*
** filter for open connection
*/
- (NSDictionary *)normalizeOpenConnectionResponse:(NGHashMap *)_map {
NSMutableDictionary *result;
id obj;
result = [self normalizeResponse:_map];
obj = [[_map objectEnumeratorForKey:@"ok"] nextObject];
if (obj == nil) {
[result setObject:NoNumber forKey:@"result"];
return result;
}
if ([obj isKindOfClass:DictClass])
obj = [(NSDictionary *)obj objectForKey:@"comment"];
if ([obj isKindOfClass:StrClass]) {
NSEnumerator *enumerator;
id key;
NSString *lowServer;
[result setObject:obj forKey:@"server"];
enumerator = [VersionPrefixDict keyEnumerator];
lowServer = [obj lowercaseString];
while ((key = [enumerator nextObject])) {
NSString *pref;
NSArray *vers;
NSRange r;
pref = [VersionPrefixDict objectForKey:key];
r = [lowServer rangeOfString:pref];
if (r.length == 0) continue;
[result setObject:key forKey:@"serverKind"];
if (![key isEqualToString:@"cyrus"])
continue;
/* cyrus server, collect version */
vers = [[lowServer substringFromIndex:(r.location + [pref length])]
componentsSeparatedByString:@"."];
if ([vers count] > 2) {
NSNumber *n;
n = [NSNumber numberWithInt:[[vers objectAtIndex:0] intValue]];
[result setObject:n forKey:@"version"];
n = [NSNumber numberWithInt:[[vers objectAtIndex:1] intValue]];
[result setObject:n forKey:@"subversion"];
n = [NSNumber numberWithInt:[[vers objectAtIndex:2] intValue]];
[result setObject:n forKey:@"tag"];
}
break;
}
}
[result setObject:YesNumber forKey:@"result"];
return result;
}
/*
** filter for list
** list : NSDictionary (folder name as key and flags as value)
*/
- (NSDictionary *)normalizeListResponse:(NGHashMap *)_map {
NSMutableDictionary *result;
id obj;
NSAutoreleasePool *pool;
NSDictionary *rr;
pool = [[NSAutoreleasePool alloc] init];
result = [self normalizeResponse:_map];
if ((obj = [_map objectsForKey:@"list"]) != nil) {
NSEnumerator *enumerator;
NSDictionary *o;
NSMutableDictionary *folder;
enumerator = [obj objectEnumerator];
folder = [[NSMutableDictionary alloc] init];
while ((o = [enumerator nextObject])) {
[folder setObject:_imapFlags2Flags(self, [o objectForKey:@"flags"])
forKey:[self->client _imapFolder2Folder:[o objectForKey:@"folderName"]]];
}
[result setObject:folder forKey:@"list"];
[folder release];
}
rr = [result retain];
[pool release];
return [rr autorelease];
}
/* flags */
static inline NSArray *
_imapFlags2Flags(NGImap4ResponseNormalizer *self, NSArray *_flags)
{
NSEnumerator *enumerator;
NSArray *result;
id obj, *objs;
unsigned cnt;
objs = calloc([_flags count] + 2, sizeof(id));
enumerator = [_flags objectEnumerator];
cnt = 0;
while ((obj = [enumerator nextObject])) {
if ([obj isNotEmpty]) {
if ([obj hasPrefix:@"\\"])
objs[cnt] = [obj substringFromIndex:1];
else
objs[cnt] = obj;
cnt++;
}
}
result = [NSArray arrayWithObjects:objs count:cnt];
if (objs) free(objs);
return result;
}
/* ACL */
- (NSDictionary *)normalizeGetACLResponse:(NGHashMap *)_map {
/*
Raw Sample (Cyrus):
21 GETACL INBOX
* ACL INBOX test.et.di.cete-lyon lrswipcda helge lrwip
21 OK Completed
*/
NSMutableDictionary *result;
id obj;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"acl"] nextObject]) != nil)
[result setObject:obj forKey:@"acl"];
if ((obj = [[_map objectEnumeratorForKey:@"mailbox"] nextObject]) != nil)
[result setObject:obj forKey:@"mailbox"];
return result;
}
- (NSDictionary *)normalizeListRightsResponse:(NGHashMap *)_map {
/*
Raw Sample (Cyrus):
16 listrights INBOX anyone
* LISTRIGHTS INBOX anyone "" l r s w i p c d a 0 1 2 3 4 5 6 7 8 9
16 OK Completed
*/
NSMutableDictionary *result;
id obj;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"listrights"] nextObject]))
[result setObject:obj forKey:@"listrights"];
if ((obj = [[_map objectEnumeratorForKey:@"requiredRights"] nextObject]))
[result setObject:obj forKey:@"requiredRights"];
if ((obj = [[_map objectEnumeratorForKey:@"mailbox"] nextObject]) != nil)
[result setObject:obj forKey:@"mailbox"];
if ((obj = [[_map objectEnumeratorForKey:@"uid"] nextObject]) != nil)
[result setObject:obj forKey:@"uid"];
return result;
}
- (NSDictionary *)normalizeMyRightsResponse:(NGHashMap *)_map {
/*
Raw Sample (Cyrus):
18 myrights INBOX
* MYRIGHTS INBOX lrswipcda
18 OK Completed
*/
NSMutableDictionary *result;
id obj;
result = [self normalizeResponse:_map];
if ((obj = [[_map objectEnumeratorForKey:@"myrights"] nextObject]) != nil)
[result setObject:obj forKey:@"myrights"];
if ((obj = [[_map objectEnumeratorForKey:@"mailbox"] nextObject]) != nil)
[result setObject:obj forKey:@"mailbox"];
return result;
}
@end /* NGImap4ResponseNormalizer */
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