358 lines
11 KiB
Objective-C
358 lines
11 KiB
Objective-C
/* MSExchangeFreeBusy.m - this file is part of SOGo
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*
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* Copyright (C) 2012-2014 Inverse inc.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#import <Foundation/NSBundle.h>
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#import <Foundation/NSCalendarDate.h>
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#import <Foundation/NSDictionary.h>
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#import <NGObjWeb/WOApplication.h>
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#import <NGObjWeb/WOContext+SoObjects.h>
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#import <NGObjWeb/WOResponse.h>
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#import <NGExtensions/NSObject+Logs.h>
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#import <SaxObjC/SaxObjC.h>
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#import <SaxObjC/SaxMethodCallHandler.h>
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#import <SaxObjC/SaxObjectDecoder.h>
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#import <SaxObjC/SaxXMLReaderFactory.h>
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#import <curl/curl.h>
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#import <SOGo/SOGoSource.h>
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#import "MSExchangeFreeBusySOAPRequest.h"
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#import "MSExchangeFreeBusy.h"
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size_t curl_body_function_freebusy(void *ptr, size_t size, size_t nmemb, void *inSelf)
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{
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return [(MSExchangeFreeBusy *)inSelf curlWritePtr:ptr size:size number:nmemb];
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}
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@implementation MSExchangeFreeBusy
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- (id) init
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{
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if ((self = [super init]))
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{
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curlBody = [[NSMutableData alloc] init];
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}
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return self;
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}
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- (void) dealloc
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{
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[curlBody release];
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[super dealloc];
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}
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- (size_t) curlWritePtr:(void *)inPtr
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size:(size_t)inSize
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number:(size_t)inNumber
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{
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size_t written = inSize*inNumber;
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NSData *data = [NSData dataWithBytes:inPtr length:written];
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[curlBody appendData: data];
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return written;
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}
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/**
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* Fetch the user availability by sending a SOAP request to a MS Exchange server (EWS).
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* @param startDate the beginning of the covered period
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* @param endDate the ending of the covered period
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* @param email the address of the user to query
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* @param source the SOGo source of the user
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* @param context the current WO context
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* @return an array of dictionaries containing the start and end dates of each busy period
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* @see <http://msdn.microsoft.com/en-us/library/aa563800(v=EXCHG.140).aspx>
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*/
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- (NSArray *) fetchFreeBusyInfosFrom: (NSCalendarDate *) startDate
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to: (NSCalendarDate *) endDate
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forEmail: (NSString *) email
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inSource: (NSObject <SOGoDNSource> *) source
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inContext: (WOContext *) context
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{
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static id<NSObject,SaxXMLReader> parser = nil;
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static SaxObjectDecoder *sax = nil;
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MSExchangeFreeBusySOAPRequest *soapRequest;
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MSExchangeFreeBusyResponse *freeBusyResponse;
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NSString *rawRequest, *url, *body, *hostname, *httpauth, *authname, *password;
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NSString *mapFile;
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NSArray *infos = nil;
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NSDictionary *root;
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NSBundle *bundle;
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CURL *curl;
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struct curl_slist *headerlist=NULL;
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CURLcode rc;
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char error[CURL_ERROR_SIZE];
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// Construct SOAP GetUserAvailabilityRequest from .wo template
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soapRequest = [[WOApplication application] pageWithName: @"MSExchangeFreeBusySOAPRequest"
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inContext: context];
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[soapRequest setAddress: email
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from: startDate
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to: endDate];
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rawRequest = [[soapRequest generateResponse] contentAsString];
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if ([rawRequest length])
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{
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// Prepare HTTPS post using libcurl
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curl_global_init(CURL_GLOBAL_SSL);
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curl = curl_easy_init();
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headerlist = curl_slist_append(headerlist, "Content-Type: text/xml; charset=utf-8");
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if (curl)
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{
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hostname = [source MSExchangeHostname];
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authname = [source lookupLoginByDN: [source bindDN]];
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password = [source bindPassword];
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error[0] = 0;
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if ([authname length] && [password length])
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{
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httpauth = [NSString stringWithFormat: @"%@:%@", authname, password];
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curl_easy_setopt(curl, CURLOPT_USERPWD, [httpauth UTF8String]);
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curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_NTLM);
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}
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url = [NSString stringWithFormat: @"https://%@/ews/Exchange.asmx", hostname];
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curl_easy_setopt(curl, CURLOPT_URL, [url UTF8String]);
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curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
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curl_easy_setopt(curl, CURLOPT_POSTFIELDS, [rawRequest UTF8String]);
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//curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, curlHeaderFunction);
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//curl_easy_setopt(curl, CURLOPT_HEADER, 1);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_body_function_freebusy);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, self);
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curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, &error);
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// Perform SOAP request
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rc = curl_easy_perform(curl);
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if (rc != 0)
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[self errorWithFormat: @"CURL error while accessing %@ (%d): ", url, rc, [NSString stringWithCString: error]];
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curl_easy_cleanup(curl);
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curl_slist_free_all(headerlist);
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if ([curlBody length])
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{
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// Parse SOAP response
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if (parser == nil)
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{
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parser = [[SaxXMLReaderFactory standardXMLReaderFactory]
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createXMLReaderForMimeType:@"text/xml"];
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[parser retain];
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}
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if (sax == nil && parser != nil)
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{
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bundle = [NSBundle bundleForClass: [self class]];
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mapFile = [bundle pathForResource: @"MSExchangeFreeBusySOAPResponseMap" ofType: @"plist"];
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if (![mapFile length])
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{
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[self errorWithFormat: @"mapFile not found (MSExchangeFreeBusySOAPResponseMap.plist)"];
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}
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sax = [[SaxObjectDecoder alloc] initWithMappingAtPath: mapFile];
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[parser setContentHandler:sax];
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//[parser setErrorHandler:sax];
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}
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body = [[NSString alloc] initWithData:curlBody encoding:NSASCIIStringEncoding];
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[body autorelease];
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[parser parseFromSource: body];
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root = [sax rootObject];
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freeBusyResponse = [[root objectForKey: @"Body"] objectForKey: @"GetUserAvailabilityResponse"];
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// Extract busy periods
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infos = [[freeBusyResponse view] infosFrom: startDate to: endDate];
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}
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}
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}
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return infos;
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}
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@end
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@implementation MSExchangeFreeBusyResponse
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- (id) init
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{
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if ((self = [super init]))
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{
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view = nil;
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}
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return self;
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}
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- (void) dealloc
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{
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[view release];
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[super dealloc];
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}
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- (MSExchangeFreeBusyView *) view
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{
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return self->view;
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}
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- (void) setFreeBusyResponseArray: (NSDictionary *) _value
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{
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NSString *responseCode;
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NSArray *responses;
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NSDictionary *response;
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view = nil;
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responses = (NSArray *) [_value objectForKey: @"responses"];
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if ([responses count] != 1)
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{
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[self errorWithFormat: @"unexpected number of responses (%i) from SOAP request", [responses count]];
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}
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else
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{
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response = [responses objectAtIndex: 0];
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responseCode = [[response objectForKey: @"ResponseMessage"] objectForKey: @"ResponseCode"];
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if ([responseCode compare: @"NoError"] == NSOrderedSame)
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{
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view = [response objectForKey: @"FreeBusyView"];
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[view retain];
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}
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}
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[self logWithFormat: @"SOAP Response: %@", self->view];
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}
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@end
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@implementation MSExchangeFreeBusyView
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- (id) init
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{
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if ((self = [super init]))
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{
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freeBusyViewType = nil;
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mergedFreeBusy = nil;
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}
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return self;
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}
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- (void) dealloc
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{
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[freeBusyViewType release];
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[mergedFreeBusy release];
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[super dealloc];
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}
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- (void) setFreeBusyViewType: (NSString *) _value
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{
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ASSIGN(freeBusyViewType, _value);
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}
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- (void) setMergedFreeBusy: (NSString *) _value
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{
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ASSIGN(mergedFreeBusy, _value);
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}
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/**
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* Parse the "DetailedMerged" representation of the freebusy information and
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* extract the busy periods.
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* @param startDate the beginning of the covered period
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* @param endDate the ending of the covered period
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* @return an array of dictionaries containing the start and end dates of each busy period
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* @see <http://msdn.microsoft.com/en-us/library/aa565898(v=EXCHG.140).aspx>
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*/
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- (NSArray *) infosFrom: (NSCalendarDate *) startDate
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to: (NSCalendarDate *) endDate
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{
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NSMutableArray *infos;
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NSCalendarDate *currentDate, *currentStartDate, *currentEndDate;
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unsigned int count;
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infos = [NSMutableArray array];
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currentStartDate = nil;
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currentDate = startDate;
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count = 0;
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while (([currentDate compare: endDate] == NSOrderedAscending ||
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[currentDate compare: endDate] == NSOrderedSame) &&
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[mergedFreeBusy length] > count)
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{
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switch ([mergedFreeBusy characterAtIndex: count])
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{
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case '0': // Free
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if (currentStartDate)
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{
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currentEndDate = currentDate;
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[infos addObject: [NSDictionary dictionaryWithObjectsAndKeys:
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[NSNumber numberWithBool: YES], @"c_isopaque",
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currentStartDate, @"startDate",
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currentEndDate, @"endDate", nil]];
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[self debugWithFormat: @"Busy period from %@ to %@", currentStartDate, currentEndDate];
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currentStartDate = nil;
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}
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break;
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case '1': // Tentative
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case '2': // Busy
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case '3': // Out of Office
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if (currentStartDate == nil)
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currentStartDate = currentDate;
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break;
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}
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count++;
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currentDate = [currentDate dateByAddingYears: 0 months: 0 days: 0
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hours: 0 minutes: 15 seconds: 0];
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}
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if (currentStartDate)
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{
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currentEndDate = currentDate;
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[infos addObject: [NSDictionary dictionaryWithObjectsAndKeys:
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[NSNumber numberWithBool: YES], @"c_isopaque",
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currentStartDate, @"startDate",
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currentEndDate, @"endDate", nil]];
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[self debugWithFormat: @"Busy period from %@ to %@", currentStartDate, currentEndDate];
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}
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return infos;
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}
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- (NSString *) description
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{
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NSMutableString *s;
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s = [NSMutableString stringWithCapacity: 64];
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[s appendFormat:@"<0x%08X[%@]:", self, NSStringFromClass([self class])];
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if (freeBusyViewType)
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[s appendFormat:@" freeBusyViewType='%@'", freeBusyViewType];
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if (mergedFreeBusy)
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[s appendFormat:@" mergedFreeBusy='%@'", mergedFreeBusy];
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[s appendString:@">"];
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return s;
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}
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@end
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