functions.php

   1 <?
   2         require_once 'config.php';
   3
   4         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
   5
   6         function purge_old_posts() {
   7                 if (PURGE_OLD_DAYS) {
   8                         $result = pg_query("DELETE FROM ttrss_entries WHERE
   9                                 date_entered < NOW() - INTERVAL '30 days'");
  10                 }
  11         }
  12
  13         function update_all_feeds($link, $fetch) {
  14
  15                 if (WEB_DEMO_MODE) return;
  16
  17                 pg_query("BEGIN");
  18
  19                 if (!$fetch) {
  20
  21                         $result = pg_query($link, "SELECT feed_url,id FROM ttrss_feeds WHERE
  22                                 last_updated is null OR title = '' OR
  23                                 EXTRACT(EPOCH FROM NOW()) - EXTRACT(EPOCH FROM last_updated) > " .
  24                                 MIN_UPDATE_TIME);
  25
  26                 } else {
  27
  28                         $result = pg_query($link, "SELECT feed_url,id FROM ttrss_feeds");
  29                 }
  30
  31                 while ($line = pg_fetch_assoc($result)) {
  32                         update_rss_feed($link, $line["feed_url"], $line["id"]);
  33                 }
  34
  35                 purge_old_posts();
  36
  37                 pg_query("COMMIT");
  38
  39         }
  40
  41         function check_feed_favicon($feed_url, $feed) {
  42                 $feed_url = str_replace("http://", "", $feed_url);
  43                 $feed_url = preg_replace("/\/.*$/", "", $feed_url);
  44
  45                 $icon_url = "http://$feed_url/favicon.ico";
  46                 $icon_file = ICONS_DIR . "/$feed.ico";
  47
  48                 if (!file_exists($icon_file)) {
  49
  50                         error_reporting(0);
  51                         $r = fopen($icon_url, "r");
  52                         error_reporting (E_ERROR | E_WARNING | E_PARSE);
  53
  54                         if ($r) {
  55                                 $tmpfname = tempnam("/tmp", "ttrssicon");
  56
  57                                 $t = fopen($tmpfname, "w");
  58
  59                                 while (!feof($r)) {
  60                                         $buf = fread($r, 16384);
  61                                         fwrite($t, $buf);
  62                                 }
  63
  64                                 fclose($r);
  65                                 fclose($t);
  66
  67                                 error_reporting(0);
  68                                 if (!rename($tmpfname, $icon_file)) {
  69                                         unlink($tmpfname);
  70                                 }
  71                                 error_reporting (E_ERROR | E_WARNING | E_PARSE);
  72
  73                         }
  74                 }
  75         }
  76
  77         function update_rss_feed($link, $feed_url, $feed) {
  78
  79                 if (WEB_DEMO_MODE) return;
  80
  81                 error_reporting(0);
  82                 $rss = fetch_rss($feed_url);
  83                 error_reporting (E_ERROR | E_WARNING | E_PARSE);
  84
  85                 pg_query("BEGIN");
  86
  87                 if ($rss) {
  88
  89                         if (ENABLE_FEED_ICONS) {
  90                                 check_feed_favicon($feed_url, $feed);
  91                         }
  92
  93                         $result = pg_query("SELECT title FROM ttrss_feeds WHERE id = '$feed'");
  94
  95                         $registered_title = pg_fetch_result($result, 0, "title");
  96
  97                         if (!$registered_title) {
  98                                 $feed_title = $rss->channel["title"];
  99                                 pg_query("UPDATE ttrss_feeds SET title = '$feed_title' WHERE id = '$feed'");
 100                         }
 101
 102                         foreach ($rss->items as $item) {
 103
 104                                 $entry_guid = $item["id"];
 105
 106                                 if (!$entry_guid) $entry_guid = $item["guid"];
 107                                 if (!$entry_guid) $entry_guid = $item["link"];
 108
 109                                 if (!$entry_guid) continue;
 110
 111                                 $entry_timestamp = "";
 112
 113                                 $rss_2_date = $item['pubdate'];
 114                                 $rss_1_date = $item['dc']['date'];
 115                                 $atom_date = $item['issued'];
 116
 117                                 if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 118                                 if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 119                                 if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 120
 121                                 if ($entry_timestamp == "") {
 122                                         $entry_timestamp = time();
 123                                         $no_orig_date = 'true';
 124                                 } else {
 125                                         $no_orig_date = 'false';
 126                                 }
 127
 128                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 129
 130                                 $entry_title = $item["title"];
 131                                 $entry_link = $item["link"];
 132
 133                                 if (!$entry_title) continue;
 134                                 if (!$entry_link) continue;
 135
 136                                 $entry_content = $item["description"];
 137                                 if (!$entry_content) $entry_content = $item["content:escaped"];
 138                                 if (!$entry_content) $entry_content = $item["content"];
 139
 140                                 if (!$entry_content) continue;
 141
 142                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 143
 144                                 $result = pg_query($link, "
 145                                         SELECT
 146                                                 id,last_read,no_orig_date,title,feed_id,content_hash,
 147                                                 EXTRACT(EPOCH FROM updated) as updated_timestamp
 148                                         FROM
 149                                                 ttrss_entries
 150                                         WHERE
 151                                                 guid = '$entry_guid'");
 152
 153                                 if (pg_num_rows($result) == 0) {
 154
 155                                         $entry_content = pg_escape_string($entry_content);
 156                                         $entry_title = pg_escape_string($entry_title);
 157                                         $entry_link = pg_escape_string($entry_link);
 158
 159                                         $query = "INSERT
 160                                                 INTO ttrss_entries
 161                                                         (title,
 162                                                         guid,
 163                                                         link,
 164                                                         updated,
 165                                                         content,
 166                                                         content_hash,
 167                                                         feed_id,
 168                                                         no_orig_date)
 169                                                 VALUES
 170                                                         ('$entry_title',
 171                                                         '$entry_guid',
 172                                                         '$entry_link',
 173                                                         '$entry_timestamp_fmt',
 174                                                         '$entry_content',
 175                                                         '$content_hash',
 176                                                         '$feed',
 177                                                         $no_orig_date)";
 178
 179                                         $result = pg_query($link, $query);
 180
 181                                 } else {
 182
 183                                         $orig_entry_id = pg_fetch_result($result, 0, "id");
 184                                         $orig_feed_id = pg_fetch_result($result, 0, "feed_id");
 185
 186                                         if ($orig_feed_id != $feed) {
 187 //                                              print "<p>Update from different feed ($orig_feed_id, $feed): $entry_guid [$entry_title]";
 188                                                 continue;
 189                                         }
 190
 191                                         $orig_timestamp = pg_fetch_result($result, 0, "updated_timestamp");
 192                                         $orig_content_hash = pg_fetch_result($result, 0, "content_hash");
 193                                         $orig_last_read = pg_fetch_result($result, 0, "last_read");
 194                                         $orig_no_orig_date = pg_fetch_result($result, 0, "no_orig_date");
 195                                         $orig_title = pg_fetch_result($result, 0, "title");
 196
 197                                         $last_read_qpart = "";
 198
 199 //                                      if ("$orig_title" != "$entry_title") {
 200 //                                              $last_read_qpart = 'last_read = null,';
 201 //                                      }
 202
 203                                         if (UPDATE_POST_ON_CHECKSUM_CHANGE &&
 204                                                         $orig_content_hash != $content_hash) {
 205
 206                                         print "$orig_content_hash : $content_hash";
 207
 208                                                 $last_read_qpart = 'last_read = null,';
 209                                         }
 210
 211 //                                      if ($orig_timestamp < $entry_timestamp) {
 212 //                                              $last_read_qpart = 'last_read = null,';
 213 //                                      }
 214
 215                                         $entry_content = pg_escape_string($entry_content);
 216                                         $entry_title = pg_escape_string($entry_title);
 217                                         $entry_link = pg_escape_string($entry_link);
 218
 219                                         $query = "UPDATE ttrss_entries
 220                                                 SET
 221                                                         $last_read_qpart
 222                                                         title = '$entry_title',
 223                                                         link = '$entry_link',
 224                                                         updated = '$entry_timestamp_fmt',
 225                                                         content = '$entry_content',
 226                                                         content_hash = '$content_hash'
 227                                                 WHERE
 228                                                         id = '$orig_entry_id'";
 229
 230                                         $result = pg_query($link, $query);
 231
 232                                 }
 233                         }
 234
 235                         if ($result) {
 236                                 $result = pg_query($link, "UPDATE ttrss_feeds SET last_updated = NOW()");
 237                         }
 238
 239                 }
 240
 241                 pg_query("COMMIT");
 242
 243         }
 244
 245
 246 ?>