webticket: implement caching

[siplcs.git] / src / core / sipe-core.c

/**
 * @file sipe-core.c
 *
 * pidgin-sipe
 *
 * Copyright (C) 2010-12 SIPE Project <http://sipe.sourceforge.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *
 * Some notes on the history of this project/code/copyrights:
 *
 *  - the project is called SIPE, but originally the code was only written
 *    for the libpurple framework, i.e. Pidgin. Hence the package name is
 *    "pidgin-sipe".
 *
 *  - in the beginning almost all of the code was located in a module
 *    called "sipe.c". During the effort to remove the libpurple
 *    dependencies from the SIPE core, thousands of lines of code got
 *    shifted out of sipe.c, mostly to newly created modules and sipe.c
 *    ceased to exist.
 *
 *  - it would have been tedious to track down the original author or
 *    copyright and preserve them for each line of code that was moved.
 *    Therefore the new modules started with a fresh copyright notice
 *    (like the one above).
 *
 *  - the original copyright notices from sipe.c have been moved to this
 *    file (see below) and *MUST* be preserved!
 *
 *  - if necessary the author of a line of code in question can still be
 *    reconstructed from the git repository information.
 *    See also "man git-blame"
 *
 *  - if you think your copyright should be restored for a piece of code,
 *    then please contact the SIPE project to fix the source files ASAP.
 *
 *------------------- Copyright notices from "sipe.c" ---------------
 * Copyright (C) 2010-11 SIPE Project <http://sipe.sourceforge.net/>
 * Copyright (C) 2009-10 pier11 <pier11@operamail.com>
 * Copyright (C) 2008    Novell, Inc.
 * Copyright (C) 2007-09 Anibal Avelar <debianmx@gmail.com>
 * Copyright (C) 2005    Thomas Butter <butter@uni-mannheim.de>
 *
 * ***
 * Thanks to Google's Summer of Code Program and the helpful mentors
 * ***
 *------------------- Copyright notices from "sipe.c" ---------------
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>

#include <glib.h>

#include "sipe-common.h"
#include "sip-csta.h"
#include "sip-sec.h"
#include "sip-transport.h"
#include "sipe-backend.h"
#include "sipe-buddy.h"
#include "sipe-cal.h"
#include "sipe-certificate.h"
#include "sipe-chat.h"
#include "sipe-conf.h"
#include "sipe-core.h"
#include "sipe-core-private.h"
#include "sipe-crypt.h"
#include "sipe-group.h"
#include "sipe-groupchat.h"
#include "sipe-media.h"
#include "sipe-mime.h"
#include "sipe-nls.h"
#include "sipe-ocs2007.h"
#include "sipe-schedule.h"
#include "sipe-session.h"
#include "sipe-status.h"
#include "sipe-subscriptions.h"
#include "sipe-svc.h"
#include "sipe-utils.h"
#include "sipe-webticket.h"

/* locale_dir is unused if ENABLE_NLS is not defined */
void sipe_core_init(SIPE_UNUSED_PARAMETER const char *locale_dir)
{
        srand(time(NULL));
        sip_sec_init();

#ifdef ENABLE_NLS
        SIPE_DEBUG_INFO("bindtextdomain = %s",
                        bindtextdomain(PACKAGE_NAME, locale_dir));
        SIPE_DEBUG_INFO("bind_textdomain_codeset = %s",
                        bind_textdomain_codeset(PACKAGE_NAME, "UTF-8"));
        textdomain(PACKAGE_NAME);
#endif
        /* Initialization for crypto backend (production mode) */
        sipe_crypto_init(TRUE);
        sipe_mime_init();
        sipe_status_init();
}

void sipe_core_destroy(void)
{
        sipe_chat_destroy();
        sipe_status_shutdown();
        sipe_mime_shutdown();
        sipe_crypto_shutdown();
        sip_sec_destroy();
}

gchar *sipe_core_about(void)
{
        return g_strdup_printf(
                /*
                 * Non-translatable parts, like markup, are hard-coded
                 * into the format string. This requires more translatable
                 * texts but it makes the translations less error prone.
                 */
                "<b><font size=\"+1\">SIPE " PACKAGE_VERSION " </font></b><br/>"
                "<br/>"
                /* 1 */   "%s:<br/>"
                "<li> - Microsoft Lync Server 2010</li><br/>"
                "<li> - Microsoft Office Communications Server 2007 R2</li><br/>"
                "<li> - Microsoft Office Communications Server 2007</li><br/>"
                "<li> - Microsoft Live Communications Server 2005</li><br/>"
                "<li> - Microsoft Live Communications Server 2003</li><br/>"
                "<li> - Reuters Messaging</li><br/>"
                "<br/>"
                /* 2 */   "%s: <a href=\"" PACKAGE_URL "\">" PACKAGE_URL "</a><br/>"
                /* 3,4 */ "%s: <a href=\"http://sourceforge.net/projects/sipe/forums/forum/688534\">%s</a><br/>"
                /* 5,6 */   "%s: <a href=\"" PACKAGE_BUGREPORT "\">%s</a><br/>"
                /* 7 */   "%s: <a href=\"" SIPE_TRANSLATIONS_URL "\">Transifex.net</a><br/>"
                /* 8 */   "%s: GPLv2+<br/>"
                "<br/>"
                /* 9 */  "%s:<br/>"
                " - CERN<br/>"
                " - Reuters Messaging network<br/>"
                " - Deutsche Bank<br/>"
                " - Merrill Lynch<br/>"
                " - Wachovia<br/>"
                " - Intel<br/>"
                " - Nokia<br/>"
                " - HP<br/>"
                " - Symantec<br/>"
                " - Accenture<br/>"
                " - Capgemini<br/>"
                " - Siemens<br/>"
                " - Alcatel-Lucent<br/>"
                " - BT<br/>"
                "<br/>"
                /* 10,11 */ "%s<a href=\"" SIPE_TRANSLATIONS_URL "\">Transifex.net</a>%s.<br/>"
                "<br/>"
                /* 12 */  "<b>%s:</b><br/>"
                " - Anibal Avelar<br/>"
                " - Gabriel Burt<br/>"
                " - Stefan Becker<br/>"
                " - pier11<br/>"
                " - Jakub Adam<br/>"
                " - Tomáš Hrabčík<br/>"
                "<br/>"
                /* 13 */  "%s<br/>"
                ,
                /* The next 13 texts make up the SIPE about note text */
                /* About note, part 1/13: introduction */
                _("A third-party plugin implementing extended version of SIP/SIMPLE used by various products"),
                /* About note, part 2/13: home page URL (label) */
                _("Home Page"),
                /* About note, part 3/13: support forum URL (label) */
                _("Support"),
                /* About note, part 4/13: support forum name (hyperlink text) */
                _("Help Forum"),
                /* About note, part 5/13: bug tracker URL (label) */
                _("Report Problems"),
                /* About note, part 6/13: bug tracker URL (hyperlink text) */
                _("Bug Tracker"),
                /* About note, part 7/13: translation service URL (label) */
                _("Translations"),
                /* About note, part 8/13: license type (label) */
                _("License"),
                /* About note, part 9/13: known users */
                _("We support users in such organizations as"),
                /* About note, part 10/13: translation request, text before Transifex.net URL */
                /* append a space if text is not empty */
                _("Please help us to translate SIPE to your native language here at "),
                /* About note, part 11/13: translation request, text after Transifex.net URL */
                /* start with a space if text is not empty */
                _(" using convenient web interface"),
                /* About note, part 12/13: author list (header) */
                _("Authors"),
                /* About note, part 13/13: Localization credit */
                /* PLEASE NOTE: do *NOT* simply translate the english original */
                /* but write something similar to the following sentence: */
                /* "Localization for <language name> (<language code>): <name>" */
                _("Original texts in English (en): SIPE developers")
                );
}

static guint sipe_ht_hash_nick(const char *nick)
{
        char *lc = g_utf8_strdown(nick, -1);
        guint bucket = g_str_hash(lc);
        g_free(lc);

        return bucket;
}

static gboolean sipe_ht_equals_nick(const char *nick1, const char *nick2)
{
        char *nick1_norm = NULL;
        char *nick2_norm = NULL;
        gboolean equal;

        if (nick1 == NULL && nick2 == NULL) return TRUE;
        if (nick1 == NULL || nick2 == NULL    ||
            !g_utf8_validate(nick1, -1, NULL) ||
            !g_utf8_validate(nick2, -1, NULL)) return FALSE;

        nick1_norm = g_utf8_casefold(nick1, -1);
        nick2_norm = g_utf8_casefold(nick2, -1);
        equal = g_utf8_collate(nick1_norm, nick2_norm) == 0;
        g_free(nick2_norm);
        g_free(nick1_norm);

        return equal;
}

struct sipe_core_public *sipe_core_allocate(const gchar *signin_name,
                                            const gchar *login_domain,
                                            const gchar *login_account,
                                            const gchar *password,
                                            const gchar *email,
                                            const gchar *email_url,
                                            const gchar **errmsg)
{
        struct sipe_core_private *sipe_private;
        gchar **user_domain;

        SIPE_DEBUG_INFO("sipe_core_allocate: signin_name '%s'", signin_name);

        /* ensure that sign-in name doesn't contain invalid characters */
        if (strpbrk(signin_name, "\t\v\r\n") != NULL) {
                *errmsg = _("SIP Exchange user name contains invalid characters");
                return NULL;
        }

        /* ensure that sign-in name format is name@domain */
        if (!strchr(signin_name, '@') ||
            g_str_has_prefix(signin_name, "@") ||
            g_str_has_suffix(signin_name, "@")) {
                *errmsg = _("User name should be a valid SIP URI\nExample: user@company.com");
                return NULL;
        }

        /* ensure that email format is name@domain (if provided) */
        if (!is_empty(email) &&
            (!strchr(email, '@') ||
             g_str_has_prefix(email, "@") ||
             g_str_has_suffix(email, "@")))
        {
                *errmsg = _("Email address should be valid if provided\nExample: user@company.com");
                return NULL;
        }

        /* ensure that user name doesn't contain spaces */
        user_domain = g_strsplit(signin_name, "@", 2);
        SIPE_DEBUG_INFO("sipe_core_allocate: user '%s' domain '%s'", user_domain[0], user_domain[1]);
        if (strchr(user_domain[0], ' ') != NULL) {
                g_strfreev(user_domain);
                *errmsg = _("SIP Exchange user name contains whitespace");
                return NULL;
        }

        /* ensure that email_url is in proper format if enabled (if provided).
         * Example (Exchange): https://server.company.com/EWS/Exchange.asmx
         * Example (Domino)  : https://[domino_server]/[mail_database_name].nsf
         */
        if (!is_empty(email_url)) {
                char *tmp = g_ascii_strdown(email_url, -1);
                if (!g_str_has_prefix(tmp, "https://"))
                {
                        g_free(tmp);
                        g_strfreev(user_domain);
                        *errmsg = _("Email services URL should be valid if provided\n"
                                    "Example: https://exchange.corp.com/EWS/Exchange.asmx\n"
                                    "Example: https://domino.corp.com/maildatabase.nsf");
                        return NULL;
                }
                g_free(tmp);
        }

        sipe_private = g_new0(struct sipe_core_private, 1);
        SIPE_CORE_PRIVATE_FLAG_UNSET(SUBSCRIBED_BUDDIES);
        SIPE_CORE_PRIVATE_FLAG_UNSET(INITIAL_PUBLISH);
        sipe_private->username   = g_strdup(signin_name);
        sipe_private->email      = is_empty(email)         ? g_strdup(signin_name) : g_strdup(email);
        sipe_private->authdomain = is_empty(login_domain)  ? NULL                  : g_strdup(login_domain);
        sipe_private->authuser   = is_empty(login_account) ? NULL                  : g_strdup(login_account);
        sipe_private->password   = g_strdup(password);
        sipe_private->public.sip_name   = g_strdup(user_domain[0]);
        sipe_private->public.sip_domain = g_strdup(user_domain[1]);
        g_strfreev(user_domain);

        sipe_private->buddies = g_hash_table_new((GHashFunc)sipe_ht_hash_nick, (GEqualFunc)sipe_ht_equals_nick);
        sipe_private->our_publications = g_hash_table_new_full(g_str_hash, g_str_equal,
                                                               g_free, (GDestroyNotify)g_hash_table_destroy);
        sipe_subscriptions_init(sipe_private);
        sipe_status_set_activity(sipe_private, SIPE_ACTIVITY_UNSET);

        return((struct sipe_core_public *)sipe_private);
}

void sipe_core_connection_cleanup(struct sipe_core_private *sipe_private)
{
        g_free(sipe_private->epid);
        sipe_private->epid = NULL;

        sip_transport_disconnect(sipe_private);

        sipe_schedule_cancel_all(sipe_private);

        if (sipe_private->allowed_events) {
                GSList *entry = sipe_private->allowed_events;
                while (entry) {
                        g_free(entry->data);
                        entry = entry->next;
                }
        }
        g_slist_free(sipe_private->allowed_events);

        sipe_ocs2007_free(sipe_private);

        sipe_core_buddy_menu_free(SIPE_CORE_PUBLIC);

        if (sipe_private->contact)
                g_free(sipe_private->contact);
        sipe_private->contact = NULL;
        if (sipe_private->register_callid)
                g_free(sipe_private->register_callid);
        sipe_private->register_callid = NULL;

        if (sipe_private->focus_factory_uri)
                g_free(sipe_private->focus_factory_uri);
        sipe_private->focus_factory_uri = NULL;

        if (sipe_private->calendar) {
                sipe_cal_calendar_free(sipe_private->calendar);
        }
        sipe_private->calendar = NULL;

        sipe_groupchat_free(sipe_private);
}

void sipe_core_deallocate(struct sipe_core_public *sipe_public)
{
        struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;

#ifdef HAVE_VV
        if (sipe_private->media_call) {
                sipe_media_handle_going_offline(sipe_private->media_call);
        }
#endif

        /* leave all conversations */
        if (sipe_private->sessions) {
                GSList *entry;
                while ((entry = sipe_private->sessions) != NULL) {
                        sipe_session_close(sipe_private, entry->data);
                }
        }

        sipe_conf_cancel_unaccepted(sipe_private, NULL);

        if (sipe_private->csta) {
                sip_csta_close(sipe_private);
        }

        sipe_webticket_free(sipe_private);
        sipe_svc_free(sipe_private);

        if (sipe_backend_connection_is_valid(SIPE_CORE_PUBLIC)) {
                sipe_subscriptions_unsubscribe(sipe_private);
                sip_transport_deregister(sipe_private);
        }

        sipe_core_connection_cleanup(sipe_private);
        sipe_certificate_free(sipe_private);

        g_free(sipe_private->public.sip_name);
        g_free(sipe_private->public.sip_domain);
        g_free(sipe_private->username);
        g_free(sipe_private->email);
        g_free(sipe_private->password);
        g_free(sipe_private->authdomain);
        g_free(sipe_private->authuser);
        g_free(sipe_private->status);
        g_free(sipe_private->note);
        g_free(sipe_private->ocs2005_user_states);

        sipe_buddy_free_all(sipe_private);
        g_hash_table_destroy(sipe_private->buddies);
        g_hash_table_destroy(sipe_private->our_publications);
        g_hash_table_destroy(sipe_private->user_state_publications);
        sipe_subscriptions_destroy(sipe_private);

        if (sipe_private->groups) {
                GSList *entry;
                while ((entry = sipe_private->groups) != NULL)
                        sipe_group_free(sipe_private, entry->data);
        }

        if (sipe_private->our_publication_keys) {
                GSList *entry = sipe_private->our_publication_keys;
                while (entry) {
                        g_free(entry->data);
                        entry = entry->next;
                }
        }
        g_slist_free(sipe_private->our_publication_keys);

#ifdef HAVE_VV
        g_free(sipe_private->test_call_bot_uri);
        g_free(sipe_private->mras_uri);
        g_free(sipe_private->media_relay_username);
        g_free(sipe_private->media_relay_password);
        sipe_media_relay_list_free(sipe_private->media_relays);
#endif

        g_free(sipe_private->addressbook_uri);
        g_free(sipe_private->dlx_uri);
        g_free(sipe_private);
}

/*
  Local Variables:
  mode: c
  c-file-style: "bsd"
  indent-tabs-mode: t
  tab-width: 8
  End:
*/