#include <stringprep.h>
#include <assert.h>
#import "XMPPConnection.h"
#import "XMPPStanza.h"
#define NS_BIND @"urn:ietf:params:xml:ns:xmpp-bind"
#define NS_CLIENT @"jabber:client"
#define NS_SASL @"urn:ietf:params:xml:ns:xmpp-sasl"
#define NS_STREAM @"http://etherx.jabber.org/streams"
@implementation XMPPConnection
@synthesize username;
@synthesize password;
@synthesize server;
@synthesize resource;
@synthesize port;
@synthesize useTLS;
@synthesize delegate;
- init
{
self = [super init];
sock = [[OFTCPSocket alloc] init];
parser = [[OFXMLParser alloc] init];
elementBuilder = [[OFXMLElementBuilder alloc] init];
port = 5222;
useTLS = YES;
mechanisms = [[OFMutableArray alloc] init];
parser.delegate = self;
elementBuilder.delegate = self;
return self;
}
- (void)dealloc
{
[sock release];
[parser release];
[elementBuilder release];
[super dealloc];
}
- (void)setUsername: (OFString*)username_
{
OFString *old = username;
char *node;
Stringprep_rc rc;
if ((rc = stringprep_profile([username_ cString], &node, "Nodeprep", 0))
!= STRINGPREP_OK) {
of_log(@"Nodeprep failed: %s", stringprep_strerror(rc));
assert(0);
}
@try {
username = [[OFString alloc] initWithCString: node];
} @finally {
free(node);
}
[old release];
}
- (void)setServer: (OFString*)server_
{
OFString *old = server;
char *srv;
Stringprep_rc rc;
if ((rc = stringprep_profile([server_ cString], &srv, "Nameprep", 0))
!= STRINGPREP_OK) {
of_log(@"Nameprep failed: %s", stringprep_strerror(rc));
assert(0);
}
@try {
server = [[OFString alloc] initWithCString: srv];
} @finally {
free(srv);
}
[old release];
}
- (void)setPassword: (OFString*)password_
{
OFString *old = password;
char *pass;
Stringprep_rc rc;
if ((rc = stringprep_profile([password_ cString], &pass, "SASLprep", 0))
!= STRINGPREP_OK) {
of_log(@"SASLprep failed: %s", stringprep_strerror(rc));
assert(0);
}
@try {
password = [[OFString alloc] initWithCString: pass];
} @finally {
free(pass);
}
[old release];
}
- (void)_startStream
{
[sock writeFormat: @"<?xml version='1.0'?>\n"
@"<stream:stream to='%@' xmlns='" NS_CLIENT @"' "
@"xmlns:stream='" NS_STREAM @"' "
@"version='1.0'>", server];
}
- (void)connect
{
OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
[sock connectToHost: server onPort: port];
[self _startStream];
[pool release];
}
- (void)handleConnection
{
char buf[512];
for (;;) {
size_t len = [sock readNBytes: 512
intoBuffer: buf];
if (len < 1)
[delegate connectionWasClosed: self];
[of_stdout writeNBytes: len
fromBuffer: buf];
[parser parseBuffer: buf
withSize: len];
}
}
- (void)sendStanza: (OFXMLElement*)elem
{
[sock writeString: [elem stringValue]];
}
- (void)parser: (OFXMLParser*)p
didStartElement: (OFString*)name
withPrefix: (OFString*)prefix
namespace: (OFString*)ns
attributes: (OFArray*)attrs
{
if (![name isEqual: @"stream"] || ![prefix isEqual: @"stream"] ||
![ns isEqual: NS_STREAM])
of_log(@"Did not get expected stream start!");
for (OFXMLAttribute *attr in attrs)
if ([attr.name isEqual: @"from"] &&
![attr.stringValue isEqual: server])
of_log(@"Got invalid from in stream start!");
parser.delegate = elementBuilder;
}
- (void)_addAuthMechanisms: (OFXMLElement*)mechanisms_
{
for (OFXMLElement *mechanism in mechanisms_.children)
[mechanisms addObject:
[mechanism.children.firstObject stringValue]];
}
- (void)_sendPLAINAuth
{
OFXMLElement *authTag;
OFDataArray *message;
message = [OFDataArray dataArrayWithItemSize: 1];
/* XXX: authzid would go here */
//[message addItem: authzid];
/* separator */
[message addItem: ""];
/* authcid */
[message addNItems: [username cStringLength]
fromCArray: [username cString]];
/* separator */
[message addItem: ""];
/* passwd */
[message addNItems: [password cStringLength]
fromCArray: [password cString]];
authTag = [OFXMLElement elementWithName: @"auth"
namespace: NS_SASL];
[authTag addAttributeWithName: @"mechanism"
stringValue: @"PLAIN"];
[authTag addChild: [OFXMLElement elementWithCharacters:
[message stringByBase64Encoding]]];
[self sendStanza: authTag];
}
- (void)_sendResourceBind
{
XMPPIQ *iq = [XMPPIQ IQWithType: @"set" ID: @"bind0"];
[iq addChild: [OFXMLElement elementWithName: @"bind"
namespace: NS_BIND]];
[self sendStanza: iq];
}
- (void)_handleResourceBind: (XMPPIQ*)iq
{
OFXMLElement *bindElem = iq.children.firstObject;
if ([bindElem.name isEqual: @"bind"] &&
[bindElem.namespace isEqual: NS_BIND]) {
OFXMLElement *jidElem = bindElem.children.firstObject;
of_log(@"Bound to JID: %@", [jidElem.children.firstObject
stringValue]);
}
}
- (void)_handleFeatures: (OFXMLElement*)elem
{
for (OFXMLElement *child in elem.children) {
if ([[child name] isEqual: @"mechanisms"] &&
[[child namespace] isEqual: NS_SASL])
[self _addAuthMechanisms: child];
else if ([[child name] isEqual: @"bind"] &&
[[child namespace] isEqual: NS_BIND])
[self _sendResourceBind];
}
if ([mechanisms containsObject: @"PLAIN"])
[self _sendPLAINAuth];
}
- (void)elementBuilder: (OFXMLElementBuilder*)b
didBuildElement: (OFXMLElement*)elem
{
elem.defaultNamespace = NS_CLIENT;
[elem setPrefix: @"stream"
forNamespace: NS_STREAM];
if ([elem.name isEqual: @"features"] &&
[elem.namespace isEqual: NS_STREAM]) {
[self _handleFeatures: elem];
return;
}
if ([elem.namespace isEqual: NS_SASL]) {
if ([elem.name isEqual: @"success"]) {
of_log(@"Auth successful");
/* Stream restart */
[mechanisms release];
mechanisms = [[OFMutableArray alloc] init];
parser.delegate = self;
[self _startStream];
return;
}
if ([elem.name isEqual: @"failure"])
of_log(@"Auth failed!");
// FIXME: Handle!
}
if ([elem.name isEqual: @"iq"] &&
[elem.namespace isEqual: NS_CLIENT]) {
XMPPIQ *iq = [XMPPIQ stanzaWithElement: elem];
if ([iq.ID isEqual: @"bind0"] && [iq.type isEqual: @"result"]) {
[self _handleResourceBind: iq];
}
}
}
- (void)elementBuilder: (OFXMLElementBuilder*)b
didNotExpectCloseTag: (OFString*)name
withPrefix: (OFString*)prefix
namespace: (OFString*)ns
{
// TODO
}
@end