functions.php

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