/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
* GData Client
* Copyright (C) 2015 Philip Withnall <philip@tecnocode.co.uk>
*
* GData Client 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 2.1 of the License, or (at your option) any later version.
*
* GData Client 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 GData Client. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gdata/gdata.h>
#include <locale.h>
#include <string.h>
#define CLIENT_ID "1074795795536-necvslvs0pchk65nf6ju4i6mniogg8fr.apps.googleusercontent.com"
#define CLIENT_SECRET "8totRi50eo2Zfr3SD2DeNAzo"
#define REDIRECT_URI "urn:ietf:wg:oauth:2.0:oob"
static int
print_usage (char *argv[])
{
g_printerr ("%s: Usage — %s <subcommand>\n"
"Subcommands:\n"
" calendars [--all|--own]\n"
" events <calendar ID> [query string]\n"
" insert-event <calendar ID> <title> <start time> "
"<end time> <attendee 1> [attendee 2 …]\n",
argv[0], argv[0]);
return -1;
}
/* Convert a GTimeVal to an ISO 8601 date string (without a time component). */
static gchar *
tv_to_iso8601_date (GTimeVal *tv)
{
struct tm *tm;
tm = gmtime (&tv->tv_sec);
return g_strdup_printf ("%04d-%02d-%02d",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday);
}
static void
print_calendar (GDataCalendarCalendar *calendar)
{
const gchar *id, *title, *time_zone, *access_level, *description;
gboolean is_hidden, is_selected;
id = gdata_entry_get_id (GDATA_ENTRY (calendar));
title = gdata_entry_get_title (GDATA_ENTRY (calendar));
time_zone = gdata_calendar_calendar_get_timezone (calendar);
is_hidden = gdata_calendar_calendar_is_hidden (calendar);
is_selected = gdata_calendar_calendar_is_selected (calendar);
access_level = gdata_calendar_calendar_get_access_level (calendar);
description = gdata_entry_get_summary (GDATA_ENTRY (calendar));
g_print ("%s — %s\n", id, title);
g_print (" Timezone: %s\n", time_zone);
g_print (" Access level: %s\n", access_level);
g_print (" Hidden? %s\n", is_hidden ? "Yes" : "No");
g_print (" Selected? %s\n", is_selected ? "Yes" : "No");
g_print (" Description:\n %s\n", description);
g_print ("\n");
}
static void
print_event (GDataCalendarEvent *event)
{
const gchar *title, *id, *description, *status, *visibility;
const gchar *transparency, *uid;
GTimeVal date_published_tv = { 0, };
GTimeVal date_edited_tv = { 0, };
gchar *date_published = NULL; /* owned */
gchar *date_edited = NULL; /* owned */
guint sequence;
gboolean guests_can_modify, guests_can_invite_others;
gboolean guests_can_see_guests, anyone_can_add_self;
GList/*<unowned GDataGDWho>*/ *people; /* unowned */
GList/*<unowned GDataGDWhere>*/ *places; /* unowned */
GList/*<unowned GDataGDWhen>*/ *times; /* unowned */
title = gdata_entry_get_title (GDATA_ENTRY (event));
id = gdata_entry_get_id (GDATA_ENTRY (event));
description = gdata_entry_get_content (GDATA_ENTRY (event));
date_published_tv.tv_sec = gdata_entry_get_published (GDATA_ENTRY (event));
date_published = g_time_val_to_iso8601 (&date_published_tv);
date_edited_tv.tv_sec = gdata_calendar_event_get_edited (event);
date_edited = g_time_val_to_iso8601 (&date_edited_tv);
status = gdata_calendar_event_get_status (event);
visibility = gdata_calendar_event_get_visibility (event);
transparency = gdata_calendar_event_get_transparency (event);
uid = gdata_calendar_event_get_uid (event);
sequence = gdata_calendar_event_get_sequence (event);
guests_can_modify = gdata_calendar_event_get_guests_can_modify (event);
guests_can_invite_others = gdata_calendar_event_get_guests_can_invite_others (event);
guests_can_see_guests = gdata_calendar_event_get_guests_can_see_guests (event);
anyone_can_add_self = gdata_calendar_event_get_anyone_can_add_self (event);
people = gdata_calendar_event_get_people (event);
places = gdata_calendar_event_get_places (event);
times = gdata_calendar_event_get_times (event);
g_print ("%s — %s\n", id, title);
g_print (" UID: %s\n", uid);
g_print (" Sequence: %u\n", sequence);
g_print (" Published: %s\n", date_published);
g_print (" Edited: %s\n", date_edited);
g_print (" Status: %s\n", status);
g_print (" Visibility: %s\n", visibility);
g_print (" Transparency: %s\n", transparency);
g_print (" Guests can modify event? %s\n",
guests_can_modify ? "Yes" : "No");
g_print (" Guests can invite others? %s\n",
guests_can_invite_others ? "Yes" : "No");
g_print (" Guests can see guest list? %s\n",
guests_can_see_guests ? "Yes" : "No");
g_print (" Anyone can add themselves? %s\n",
anyone_can_add_self ? "Yes" : "No");
g_print (" Description:\n %s\n", description);
g_print (" Guests:\n");
for (; people != NULL; people = people->next) {
GDataGDWho *who;
who = GDATA_GD_WHO (people->data);
g_print (" • %s — %s (%s)\n",
gdata_gd_who_get_value_string (who),
gdata_gd_who_get_email_address (who),
gdata_gd_who_get_relation_type (who));
}
g_print (" Locations:\n");
for (; places != NULL; places = places->next) {
GDataGDWhere *where;
where = GDATA_GD_WHERE (places->data);
g_print (" • %s\n", gdata_gd_where_get_value_string (where));
}
g_print (" Times:\n");
for (; times != NULL; times = times->next) {
GDataGDWhen *when;
GTimeVal start_time = { 0, }, end_time = { 0, };
gchar *start = NULL, *end = NULL; /* owned */
when = GDATA_GD_WHEN (times->data);
start_time.tv_sec = gdata_gd_when_get_start_time (when);
end_time.tv_sec = gdata_gd_when_get_end_time (when);
if (gdata_gd_when_is_date (when)) {
start = tv_to_iso8601_date (&start_time);
end = tv_to_iso8601_date (&end_time);
} else {
start = g_time_val_to_iso8601 (&start_time);
end = g_time_val_to_iso8601 (&end_time);
}
g_print (" • %s to %s (%s)\n",
start, end, gdata_gd_when_get_value_string (when));
/* TODO: Reminders are not supported yet. */
}
g_print ("\n");
g_free (date_published);
}
static GDataAuthorizer *
create_authorizer (GError **error)
{
GDataOAuth2Authorizer *authorizer = NULL; /* owned */
gchar *uri = NULL;
gchar code[100];
GError *child_error = NULL;
/* Go through the interactive OAuth dance. */
authorizer = gdata_oauth2_authorizer_new (CLIENT_ID, CLIENT_SECRET,
REDIRECT_URI,
GDATA_TYPE_CALENDAR_SERVICE);
/* Get an authentication URI */
uri = gdata_oauth2_authorizer_build_authentication_uri (authorizer,
NULL, FALSE);
/* Wait for the user to retrieve and enter the verifier. */
g_print ("Please navigate to the following URI and grant access:\n"
" %s\n", uri);
g_print ("Enter verifier (EOF to abort): ");
g_free (uri);
if (scanf ("%100s", code) != 1) {
/* User chose to abort. */
g_print ("\n");
g_clear_object (&authorizer);
return NULL;
}
/* Authorise the token. */
gdata_oauth2_authorizer_request_authorization (authorizer, code, NULL,
&child_error);
if (child_error != NULL) {
g_propagate_error (error, child_error);
g_clear_object (&authorizer);
return NULL;
}
return GDATA_AUTHORIZER (authorizer);
}
/* List all the user’s calendars. */
static int
command_calendars (int argc, char *argv[])
{
GDataCalendarService *service = NULL;
GDataCalendarQuery *query = NULL;
GDataFeed *feed = NULL;
GList/*<unowned GDataCalendarCalendar>*/ *entries;
GError *error = NULL;
gint retval = 0;
gboolean only_own; /* only query for calendars the user owns */
GDataAuthorizer *authorizer = NULL;
if (argc < 2) {
return print_usage (argv);
} else if (argc == 2) {
only_own = FALSE;
} else if (g_strcmp0 (argv[2], "--all") == 0 ||
g_strcmp0 (argv[2], "--own") == 0) {
only_own = (g_strcmp0 (argv[2], "--own") == 0);
} else {
only_own = FALSE;
}
/* Authenticate and create a service. */
authorizer = create_authorizer (&error);
if (error != NULL) {
g_printerr ("%s: Error authenticating: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
} else if (authorizer == NULL) {
g_printerr ("%s: User chose to abort authentication.\n",
argv[0]);
retval = 1;
goto done;
}
service = gdata_calendar_service_new (authorizer);
query = gdata_calendar_query_new (NULL);
if (only_own) {
feed = gdata_calendar_service_query_own_calendars (service,
GDATA_QUERY (query),
NULL, NULL,
NULL,
&error);
} else {
feed = gdata_calendar_service_query_all_calendars (service,
GDATA_QUERY (query),
NULL, NULL,
NULL,
&error);
}
if (error != NULL) {
g_printerr ("%s: Error querying calendars: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
}
/* Print results. */
for (entries = gdata_feed_get_entries (feed); entries != NULL;
entries = entries->next) {
GDataCalendarCalendar *calendar;
calendar = GDATA_CALENDAR_CALENDAR (entries->data);
print_calendar (calendar);
}
g_print ("Total of %u results.\n",
g_list_length (gdata_feed_get_entries (feed)));
done:
g_clear_object (&feed);
g_clear_object (&query);
g_clear_object (&authorizer);
g_clear_object (&service);
return retval;
}
/* Query the events in a calendar. */
static int
command_events (int argc, char *argv[])
{
GDataCalendarService *service = NULL;
GDataCalendarCalendar *calendar = NULL;
GDataCalendarQuery *query = NULL;
GError *error = NULL;
gint retval = 0;
const gchar *query_string, *calendar_id;
GDataAuthorizer *authorizer = NULL;
guint n_results;
if (argc < 3) {
return print_usage (argv);
}
calendar_id = argv[2];
query_string = (argc > 3) ? argv[3] : NULL;
/* Authenticate and create a service. */
authorizer = create_authorizer (&error);
if (error != NULL) {
g_printerr ("%s: Error authenticating: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
} else if (authorizer == NULL) {
g_printerr ("%s: User chose to abort authentication.\n",
argv[0]);
retval = 1;
goto done;
}
service = gdata_calendar_service_new (authorizer);
query = gdata_calendar_query_new (query_string);
gdata_query_set_max_results (GDATA_QUERY (query), 10);
calendar = gdata_calendar_calendar_new (calendar_id);
n_results = 0;
while (TRUE) {
GList/*<unowned GDataCalendarEvent>*/ *entries, *l;
GDataFeed *feed = NULL;
feed = gdata_calendar_service_query_events (service, calendar,
GDATA_QUERY (query), NULL,
NULL, NULL, &error);
if (error != NULL) {
g_printerr ("%s: Error querying events: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
}
/* Print results. */
entries = gdata_feed_get_entries (feed);
if (entries == NULL) {
retval = 0;
g_object_unref (feed);
goto done;
}
for (l = entries; l != NULL; l = l->next) {
GDataCalendarEvent *event;
event = GDATA_CALENDAR_EVENT (l->data);
print_event (event);
n_results++;
}
gdata_query_next_page (GDATA_QUERY (query));
g_object_unref (feed);
}
g_print ("Total of %u results.\n", n_results);
done:
g_clear_object (&query);
g_clear_object (&authorizer);
g_clear_object (&calendar);
g_clear_object (&service);
return retval;
}
/* Insert a new event into a calendar. */
static int
command_insert_event (int argc, char *argv[])
{
GDataCalendarService *service = NULL;
GDataCalendarCalendar *calendar = NULL;
GDataCalendarEvent *event = NULL;
GDataCalendarEvent *inserted_event = NULL;
GError *error = NULL;
gint retval = 0;
const gchar *calendar_id, *title, *start, *end;
GDataAuthorizer *authorizer = NULL;
GDataGDWhen *when = NULL;
gboolean is_date;
gchar *start_with_time = NULL, *end_with_time = NULL;
GTimeVal start_tv = { 0, }, end_tv = { 0, };
gint i;
if (argc < 7) {
return print_usage (argv);
}
calendar_id = argv[2];
title = argv[3];
start = argv[4];
end = argv[5];
/* subsequent arguments are e-mail addresses of attendees,
* with at least one required. */
/* Authenticate and create a service. */
authorizer = create_authorizer (&error);
if (error != NULL) {
g_printerr ("%s: Error authenticating: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
} else if (authorizer == NULL) {
g_printerr ("%s: User chose to abort authentication.\n",
argv[0]);
retval = 1;
goto done;
}
service = gdata_calendar_service_new (authorizer);
calendar = gdata_calendar_calendar_new (calendar_id);
/* Create the event to insert. */
event = gdata_calendar_event_new (NULL);
gdata_entry_set_title (GDATA_ENTRY (event), title);
start_with_time = g_strconcat (start, "T00:00:00Z", NULL);
end_with_time = g_strconcat (end, "T00:00:00Z", NULL);
if (g_time_val_from_iso8601 (start, &start_tv) &&
g_time_val_from_iso8601 (end, &end_tv)) {
/* Includes time. */
is_date = FALSE;
} else if (g_time_val_from_iso8601 (start_with_time, &start_tv) &&
g_time_val_from_iso8601 (end_with_time, &end_tv)) {
/* Does not include time. */
is_date = TRUE;
} else {
g_printerr ("%s: Could not parse start time ‘%s’ and end time "
"‘%s’ as ISO 8601.\n", argv[0], start, end);
retval = 1;
goto done;
}
when = gdata_gd_when_new (start_tv.tv_sec, end_tv.tv_sec, is_date);
gdata_calendar_event_add_time (event, when);
g_object_unref (when);
for (i = 6; i < argc; i++) {
GDataGDWho *who = NULL;
const gchar *relation_type, *email_address;
relation_type = GDATA_GD_WHO_EVENT_ATTENDEE;
email_address = argv[i];
who = gdata_gd_who_new (relation_type, NULL, email_address);
gdata_calendar_event_add_person (event, who);
g_object_unref (who);
}
/* Insert the event. */
inserted_event = gdata_calendar_service_insert_calendar_event (service,
calendar,
event,
NULL,
&error);
if (error != NULL) {
g_printerr ("%s: Error inserting event: %s\n",
argv[0], error->message);
g_error_free (error);
retval = 1;
goto done;
}
/* Print results. */
print_event (inserted_event);
done:
g_free (start_with_time);
g_free (end_with_time);
g_clear_object (&inserted_event);
g_clear_object (&event);
g_clear_object (&authorizer);
g_clear_object (&calendar);
g_clear_object (&service);
return retval;
}
static const struct {
const gchar *command;
int (*handler_fn) (int argc, char **argv);
} command_handlers[] = {
{ "calendars", command_calendars },
{ "events", command_events },
{ "insert-event", command_insert_event },
};
int
main (int argc, char *argv[])
{
guint i;
gint retval = -1;
setlocale (LC_ALL, "");
if (argc < 2) {
return print_usage (argv);
}
for (i = 0; i < G_N_ELEMENTS (command_handlers); i++) {
if (strcmp (argv[1], command_handlers[i].command) == 0) {
retval = command_handlers[i].handler_fn (argc, argv);
}
}
if (retval == -1) {
retval = print_usage (argv);
}
return retval;
}