votes.php 9.45 KB
Newer Older
Scott committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
<?php
/*
	Question2Answer by Gideon Greenspan and contributors
	http://www.question2answer.org/

	File: qa-include/qa-app-votes.php
	Description: Handling incoming votes (application level)


	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.

	More about this license: http://www.question2answer.org/license.php
*/

Scott committed
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
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
	header('Location: ../');
	exit;
}


/**
 * Check if $userid can vote on $post, on the page $topage.
 * Return an HTML error to display if there was a problem, or false if it's OK.
 * @param $post
 * @param $vote
 * @param $userid
 * @param $topage
 * @return bool|mixed|string
 */
function qa_vote_error_html($post, $vote, $userid, $topage)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	// The 'login', 'confirm', 'limit', 'userblock' and 'ipblock' permission errors are reported to the user here.
	// Others ('approve', 'level') prevent the buttons being clickable in the first place, in qa_get_vote_view(...)

	require_once QA_INCLUDE_DIR . 'app/users.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';

48
	if (is_array($post) && ($post['basetype'] == 'Q' || $post['basetype'] == 'A') &&
Scott committed
49 50 51 52 53 54 55 56 57 58 59 60
		qa_opt(($post['basetype'] == 'Q') ? 'voting_on_qs' : 'voting_on_as') &&
		(!isset($post['userid']) || !isset($userid) || $post['userid'] != $userid)
	) {
		$permiterror = qa_user_post_permit_error(($post['basetype'] == 'Q') ? 'permit_vote_q' : 'permit_vote_a', $post, QA_LIMIT_VOTES);

		$errordownonly = !$permiterror && $vote < 0;
		if ($errordownonly)
			$permiterror = qa_user_post_permit_error('permit_vote_down', $post);

		switch ($permiterror) {
			case 'login':
				return qa_insert_login_links(qa_lang_html('main/vote_must_login'), $topage);
Scott committed
61 62
				break;

Scott committed
63 64
			case 'confirm':
				return qa_insert_login_links(qa_lang_html($errordownonly ? 'main/vote_down_must_confirm' : 'main/vote_must_confirm'), $topage);
Scott committed
65 66
				break;

Scott committed
67 68
			case 'limit':
				return qa_lang_html('main/vote_limit');
Scott committed
69 70
				break;

Scott committed
71 72
			default:
				return qa_lang_html('users/no_permission');
Scott committed
73 74
				break;

Scott committed
75 76
			case false:
				return false;
Scott committed
77 78
		}

Scott committed
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
	} else
		return qa_lang_html('main/vote_not_allowed'); // voting option should not have been presented (but could happen due to options change)
}


/**
 * Actually set (application level) the $vote (-1/0/1) by $userid (with $handle and $cookieid) on $postid.
 * Handles user points, recounting and event reports as appropriate.
 * @param $post
 * @param $userid
 * @param $handle
 * @param $cookieid
 * @param $vote
 * @return mixed
 */
function qa_vote_set($post, $userid, $handle, $cookieid, $vote)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	require_once QA_INCLUDE_DIR . 'db/points.php';
	require_once QA_INCLUDE_DIR . 'db/hotness.php';
	require_once QA_INCLUDE_DIR . 'db/votes.php';
	require_once QA_INCLUDE_DIR . 'db/post-create.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';

	$vote = (int)min(1, max(-1, $vote));
	$oldvote = (int)qa_db_uservote_get($post['postid'], $userid);

	qa_db_uservote_set($post['postid'], $userid, $vote);
	qa_db_post_recount_votes($post['postid']);

	$postisanswer = ($post['basetype'] == 'A');

	if ($postisanswer) {
		qa_db_post_acount_update($post['parentid']);
		qa_db_unupaqcount_update();
Scott committed
115 116
	}

Scott committed
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
	$columns = array();

	if ($vote > 0 || $oldvote > 0)
		$columns[] = $postisanswer ? 'aupvotes' : 'qupvotes';

	if ($vote < 0 || $oldvote < 0)
		$columns[] = $postisanswer ? 'adownvotes' : 'qdownvotes';

	qa_db_points_update_ifuser($userid, $columns);

	qa_db_points_update_ifuser($post['userid'], array($postisanswer ? 'avoteds' : 'qvoteds', 'upvoteds', 'downvoteds'));

	if ($post['basetype'] == 'Q')
		qa_db_hotness_update($post['postid']);

	if ($vote < 0)
		$event = $postisanswer ? 'a_vote_down' : 'q_vote_down';
	elseif ($vote > 0)
		$event = $postisanswer ? 'a_vote_up' : 'q_vote_up';
	else
		$event = $postisanswer ? 'a_vote_nil' : 'q_vote_nil';

	qa_report_event($event, $userid, $handle, $cookieid, array(
		'postid' => $post['postid'],
		'userid' => $post['userid'],
		'vote' => $vote,
		'oldvote' => $oldvote,
	));
}


/**
 * Check if $userid can flag $post, on the page $topage.
 * Return an HTML error to display if there was a problem, or false if it's OK.
 * @param $post
 * @param $userid
 * @param $topage
 * @return bool|mixed|string
 */
function qa_flag_error_html($post, $userid, $topage)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	// The 'login', 'confirm', 'limit', 'userblock' and 'ipblock' permission errors are reported to the user here.
	// Others ('approve', 'level') prevent the flag button being shown, in qa_page_q_post_rules(...)

	require_once QA_INCLUDE_DIR . 'db/selects.php';
	require_once QA_INCLUDE_DIR . 'app/options.php';
	require_once QA_INCLUDE_DIR . 'app/users.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';

168
	if (is_array($post) && qa_opt('flagging_of_posts') &&
Scott committed
169 170 171 172 173 174
		(!isset($post['userid']) || !isset($userid) || $post['userid'] != $userid)
	) {
		switch (qa_user_post_permit_error('permit_flag', $post, QA_LIMIT_FLAGS)) {
			case 'login':
				return qa_insert_login_links(qa_lang_html('question/flag_must_login'), $topage);
				break;
Scott committed
175

Scott committed
176 177
			case 'confirm':
				return qa_insert_login_links(qa_lang_html('question/flag_must_confirm'), $topage);
Scott committed
178 179
				break;

Scott committed
180 181
			case 'limit':
				return qa_lang_html('question/flag_limit');
Scott committed
182 183
				break;

Scott committed
184 185
			default:
				return qa_lang_html('users/no_permission');
Scott committed
186
				break;
Scott committed
187 188 189

			case false:
				return false;
Scott committed
190 191
		}

Scott committed
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231
	} else
		return qa_lang_html('question/flag_not_allowed'); // flagging option should not have been presented
}


/**
 * Set (application level) a flag by $userid (with $handle and $cookieid) on $oldpost which belongs to $question.
 * Handles recounting, admin notifications and event reports as appropriate.
 * Returns true if the post should now be hidden because it has accumulated enough flags.
 * @param $oldpost
 * @param $userid
 * @param $handle
 * @param $cookieid
 * @param $question
 * @return bool
 */
function qa_flag_set_tohide($oldpost, $userid, $handle, $cookieid, $question)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	require_once QA_INCLUDE_DIR . 'db/votes.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';
	require_once QA_INCLUDE_DIR . 'db/post-update.php';

	qa_db_userflag_set($oldpost['postid'], $userid, true);
	qa_db_post_recount_flags($oldpost['postid']);
	qa_db_flaggedcount_update();

	switch ($oldpost['basetype']) {
		case 'Q':
			$event = 'q_flag';
			break;

		case 'A':
			$event = 'a_flag';
			break;

		case 'C':
			$event = 'c_flag';
			break;
Scott committed
232 233
	}

Scott committed
234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
	$post = qa_db_select_with_pending(qa_db_full_post_selectspec(null, $oldpost['postid']));

	qa_report_event($event, $userid, $handle, $cookieid, array(
		'postid' => $oldpost['postid'],
		'oldpost' => $oldpost,
		'flagcount' => $post['flagcount'],
		'questionid' => $question['postid'],
		'question' => $question,
	));

	return $post['flagcount'] >= qa_opt('flagging_hide_after') && !$post['hidden'];
}


/**
 * Clear (application level) a flag on $oldpost by $userid (with $handle and $cookieid).
 * Handles recounting and event reports as appropriate.
 * @param $oldpost
 * @param $userid
 * @param $handle
 * @param $cookieid
 * @return mixed
 */
function qa_flag_clear($oldpost, $userid, $handle, $cookieid)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	require_once QA_INCLUDE_DIR . 'db/votes.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';
	require_once QA_INCLUDE_DIR . 'db/post-update.php';

	qa_db_userflag_set($oldpost['postid'], $userid, false);
	qa_db_post_recount_flags($oldpost['postid']);
	qa_db_flaggedcount_update();

	switch ($oldpost['basetype']) {
		case 'Q':
			$event = 'q_unflag';
			break;

		case 'A':
			$event = 'a_unflag';
			break;

		case 'C':
			$event = 'c_unflag';
			break;
	}
Scott committed
282

Scott committed
283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329
	qa_report_event($event, $userid, $handle, $cookieid, array(
		'postid' => $oldpost['postid'],
		'oldpost' => $oldpost,
	));
}


/**
 * Clear (application level) all flags on $oldpost by $userid (with $handle and $cookieid).
 * Handles recounting and event reports as appropriate.
 * @param $oldpost
 * @param $userid
 * @param $handle
 * @param $cookieid
 * @return mixed
 */
function qa_flags_clear_all($oldpost, $userid, $handle, $cookieid)
{
	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }

	require_once QA_INCLUDE_DIR . 'db/votes.php';
	require_once QA_INCLUDE_DIR . 'app/limits.php';
	require_once QA_INCLUDE_DIR . 'db/post-update.php';

	qa_db_userflags_clear_all($oldpost['postid']);
	qa_db_post_recount_flags($oldpost['postid']);
	qa_db_flaggedcount_update();

	switch ($oldpost['basetype']) {
		case 'Q':
			$event = 'q_clearflags';
			break;

		case 'A':
			$event = 'a_clearflags';
			break;

		case 'C':
			$event = 'c_clearflags';
			break;
	}

	qa_report_event($event, $userid, $handle, $cookieid, array(
		'postid' => $oldpost['postid'],
		'oldpost' => $oldpost,
	));
}