functions.php

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