aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/publish-calendar/publish-format-fb.c
blob: caa88c4be607c24ac4f717367f034d90a31456d2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
/*
 * This program 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.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Authors:
 *      David Trowbridge <trowbrds@cs.colorado.edu>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include <time.h>
#include <glib/gi18n.h>

#include <shell/e-shell.h>

#include "publish-format-fb.h"

static void
free_busy_data_cb (ECalClient *client,
                   const GSList *free_busy_ecalcomps,
                   GSList **pobjects)
{
    const GSList *iter;

    g_return_if_fail (pobjects != NULL);

    for (iter = free_busy_ecalcomps; iter != NULL; iter = iter->next) {
        ECalComponent *comp = iter->data;

        if (comp)
            *pobjects = g_slist_prepend (*pobjects, g_object_ref (comp));
    }
}

static gboolean
write_calendar (const gchar *uid,
                GOutputStream *stream,
                gint dur_type,
                gint dur_value,
                GError **error)
{
    EShell *shell;
    ESource *source;
    ESourceRegistry *registry;
    EClient *client = NULL;
    GSList *objects = NULL;
    icaltimezone *utc;
    time_t start = time (NULL), end;
    icalcomponent *top_level;
    gchar *email = NULL;
    GSList *users = NULL;
    gboolean success = FALSE;

    utc = icaltimezone_get_utc_timezone ();
    start = time_day_begin_with_zone (start, utc);

    switch (dur_type) {
    case FB_DURATION_DAYS:
        end = time_add_day_with_zone (start, dur_value, utc);
        break;
    default:
    case FB_DURATION_WEEKS:
        end = time_add_week_with_zone (start, dur_value, utc);
        break;
    case FB_DURATION_MONTHS:
        end = time_add_month_with_zone (start, dur_value, utc);
        break;
    }

    shell = e_shell_get_default ();
    registry = e_shell_get_registry (shell);
    source = e_source_registry_ref_source (registry, uid);

    if (source != NULL) {
        client = e_cal_client_connect_sync (
            source, E_CAL_CLIENT_SOURCE_TYPE_EVENTS,
            NULL, error);
        g_object_unref (source);
    } else {
        g_set_error (
            error, E_CAL_CLIENT_ERROR,
            E_CAL_CLIENT_ERROR_NO_SUCH_CALENDAR,
            _("Invalid source UID '%s'"), uid);
    }

    if (client == NULL)
        return FALSE;

    if (e_client_get_backend_property_sync (client, CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &email, NULL, NULL)) {
        if (email && *email)
            users = g_slist_append (users, email);
    }

    top_level = e_cal_util_new_top_level ();

    g_signal_connect (
        client, "free-busy-data",
        G_CALLBACK (free_busy_data_cb), &objects);

    success = e_cal_client_get_free_busy_sync (
        E_CAL_CLIENT (client), start, end, users, NULL, error);
    if (success) {
        gchar *ical_string;
        GSList *iter;
        gboolean done = FALSE;

        /* This is to workaround broken dispatch of "free-busy-data" signal,
         * introduced in 3.8.0. This code can be removed once the below bug is
         * properly fixed: https://bugzilla.gnome.org/show_bug.cgi?id=692361
        */
        while (!done) {
            g_usleep (G_USEC_PER_SEC / 10);
            done = !g_main_context_iteration (NULL, FALSE);
        }

        for (iter = objects; iter; iter = iter->next) {
            ECalComponent *comp = iter->data;
            icalcomponent *icalcomp = icalcomponent_new_clone (e_cal_component_get_icalcomponent (comp));
            icalcomponent_add_component (top_level, icalcomp);
        }

        ical_string = icalcomponent_as_ical_string_r (top_level);

        success = g_output_stream_write_all (
            stream, ical_string,
            strlen (ical_string),
            NULL, NULL, error);

        e_cal_client_free_ecalcomp_slist (objects);
        g_free (ical_string);
    }

    if (users)
        g_slist_free (users);

    g_free (email);
    g_object_unref (client);
    icalcomponent_free (top_level);

    return success;
}

void
publish_calendar_as_fb (GOutputStream *stream,
                        EPublishUri *uri,
                        GError **error)
{
    GSList *l;

    /* events */
    l = uri->events;
    while (l) {
        gchar *uid = l->data;
        if (!write_calendar (uid, stream, uri->fb_duration_type, uri->fb_duration_value, error))
            break;
        l = g_slist_next (l);
    }
}