gl/includes/db/gl_db_rates.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU General Public License, GPL,
   5         as published by the Free Software Foundation, either version 3
   6         of the License, or (at your option) any later version.
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10     See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
  11 ***********************************************************************/
  12 include_once($path_to_root . "/includes/remote_url.inc");
  13 //---------------------------------------------------------------------------------------------
  14 function get_exchange_rate($rate_id)
  15 {
  16         $sql = "SELECT * FROM ".TB_PREF."exchange_rates WHERE id=".db_escape($rate_id);
  17         $result = db_query($sql, "could not get exchange rate for $rate_id");
  18
  19         return db_fetch($result);
  20 }
  21
  22 // Retrieves buy exchange rate for given currency/date, zero if no result
  23 function get_date_exchange_rate($curr_code, $date_)
  24 {
  25         $date = date2sql($date_);
  26         $sql = "SELECT rate_buy FROM ".TB_PREF."exchange_rates WHERE curr_code=".db_escape($curr_code)
  27         ." AND date_='$date'";
  28         $result = db_query($sql, "could not get exchange rate for $curr_code - $date_");
  29
  30         if(db_num_rows($result) == 0)
  31                 return 0;
  32         $row = db_fetch($result);
  33                 return $row[0];
  34 }
  35
  36 //---------------------------------------------------------------------------------------------
  37
  38 function update_exchange_rate($curr_code, $date_, $buy_rate, $sell_rate)
  39 {
  40         if (is_company_currency($curr_code))
  41                 display_db_error("Exchange rates cannot be set for company currency", "", true);
  42
  43         $date = date2sql($date_);
  44
  45         $sql = "UPDATE ".TB_PREF."exchange_rates SET rate_buy=$buy_rate, rate_sell=".db_escape($sell_rate)
  46         ." WHERE curr_code=".db_escape($curr_code)." AND date_='$date'";
  47
  48         db_query($sql, "could not add exchange rate for $curr_code");
  49 }
  50
  51 //---------------------------------------------------------------------------------------------
  52
  53 function add_exchange_rate($curr_code, $date_, $buy_rate, $sell_rate)
  54 {
  55         if (is_company_currency($curr_code))
  56                 display_db_error("Exchange rates cannot be set for company currency", "", true);
  57
  58         $date = date2sql($date_);
  59
  60         $sql = "INSERT INTO ".TB_PREF."exchange_rates (curr_code, date_, rate_buy, rate_sell)
  61                 VALUES (".db_escape($curr_code).", '$date', ".db_escape($buy_rate)
  62                 .", ".db_escape($sell_rate).")";
  63         db_query($sql, "could not add exchange rate for $curr_code");
  64 }
  65
  66 //---------------------------------------------------------------------------------------------
  67
  68 function add_new_exchange_rate($curr_code, $date_, $ex_rate)
  69 {
  70         if (is_company_currency($curr_code) || !$ex_rate)
  71                 return;
  72
  73         if (!get_date_exchange_rate($curr_code, $date_))
  74                 add_exchange_rate($curr_code, $date_, $ex_rate, $ex_rate);
  75 }
  76
  77 //---------------------------------------------------------------------------------------------
  78
  79 function delete_exchange_rate($rate_id)
  80 {
  81         $sql = "DELETE FROM ".TB_PREF."exchange_rates WHERE id=".db_escape($rate_id);
  82         db_query($sql, "could not delete exchange rate $rate_id");
  83 }
  84
  85 //-----------------------------------------------------------------------------
  86 //      Retrieve exchange rate as of date $date from external source (usually inet)
  87 //
  88 //      Exchange rate for currency revaluation purposes is defined in FA as home_currency/curr_b ratio i.e.
  89 //
  90 //      amount [home] = amount [curr] * ex_rate
  91 //
  92 function retrieve_exrate($curr_b, $date)
  93 {
  94         global $xr_providers, $dflt_xr_provider;
  95         $xchg_rate_provider = ((isset($xr_providers) && isset($dflt_xr_provider)) ? $xr_providers[$dflt_xr_provider] : 'ECB');
  96
  97         $rate = hook_retrieve_exrate($curr_b, $date);
  98         if (is_numeric($rate))
  99                 return $rate;
 100         return get_extern_rate($curr_b, $xchg_rate_provider, $date);
 101 }
 102 //-----------------------------------------------------------------------------
 103
 104 function get_extern_rate($curr_b, $provider = 'ECB', $date)
 105 {
 106         global  $path_to_root;
 107
 108         if ($date != Today())   // no historical rates available
 109                 return 0;
 110
 111         $curr_a = get_company_pref('curr_default');
 112         if ($provider == 'ECB')
 113         {
 114                 $filename = "/stats/eurofxref/eurofxref-daily.xml";
 115                 $site = "www.ecb.europa.eu";
 116                 $site_ip="172.230.157.137";
 117         }
 118         elseif ($provider == 'YAHOO')
 119         {
 120                 $filename = "/d/quotes.csv?s={$curr_a}{$curr_b}=X&f=sl1d1t1ba&e=.csv"; // new URL's for YAHOO
 121                 $site = "download.finance.yahoo.com";
 122         //$filename = "/q?s={$curr_a}{$curr_b}=X"; // Let old code be here for a while, Joe.
 123                 //$site = "finance.yahoo.com";
 124                 $site_ip="203.84.220.151";
 125         }
 126         elseif ($provider == 'GOOGLE')
 127         {
 128                 $filename = "/finance/converter?a=1&from={$curr_a}&to={$curr_b}";
 129                 $site = "www.google.com";
 130                 $site_ip = "74.125.23.147";
 131         }
 132         elseif ($provider == 'BLOOMBERG')
 133         {
 134                 $filename = "/quote/{$curr_b}{$curr_a}:CUR";
 135                 $site = "www.bloomberg.com";
 136                 $site_ip = "23.35.88.72";
 137         }
 138         $contents = '';
 139         if (function_exists('curl_init'))
 140         {       // first check with curl as we can set short timeout;
 141                 $retry = 1;
 142                 do {
 143                $ch = curl_init();
 144            curl_setopt ($ch, CURLOPT_URL, 'http://'.$site.$filename);
 145                curl_setopt ($ch, CURLOPT_COOKIEJAR, "$path_to_root/tmp/cookie.txt");
 146            curl_setopt ($ch, CURLOPT_HEADER, 0);
 147                curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
 148                // prevent warning while safe_mode/open_basedir on (redireciton doesn't occur at least on ECB page)
 149                    if (!ini_get('safe_mode') && !ini_get('open_basedir'))
 150                 curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
 151                curl_setopt ($ch, CURLOPT_TIMEOUT, 3);
 152            $contents = curl_exec ($ch);
 153                curl_close($ch);
 154                         // due to resolver bug in some curl versions (e.g. 7.15.5)
 155                         // try again for constant IP.
 156                    $site=$site_ip;
 157            } while( ($contents == '') && $retry--);
 158
 159         } else {
 160                 $contents = url_get_contents("http://".$site.$filename);
 161         }
 162         if ($provider == 'ECB')
 163         {
 164                 $contents = str_replace ("<Cube currency='USD'", " <Cube currency='EUR' rate='1'/> <Cube currency='USD'", $contents);
 165                 $from_mask = "|<Cube\s*currency=\'" . $curr_a . "\'\s*rate=\'([\d.,]*)\'\s*/>|i";
 166                 preg_match ( $from_mask, $contents, $out );
 167                 $val_a = isset($out[1]) ? $out[1] : 0;
 168                 $val_a = str_replace ( ',', '', $val_a );
 169                 $to_mask = "|<Cube\s*currency=\'" . $curr_b . "\'\s*rate=\'([\d.,]*)\'\s*/>|i";
 170                 preg_match ( $to_mask, $contents, $out );
 171                 $val_b = isset($out[1]) ? $out[1] : 0;
 172                 $val_b = str_replace ( ',', '', $val_b );
 173                 if ($val_b)
 174                 {
 175                         $val = $val_a / $val_b;
 176                 }
 177                 else
 178                 {
 179                         $val = 0;
 180                 }
 181         }
 182         elseif ($provider == 'YAHOO')
 183         {
 184                 $val = '';
 185                 $array = explode(',',$contents); // New operations for YAHOO. Safer.
 186                 $val = $array[1];
 187                 if ($val != 0)
 188                         $val = 1 / $val;
 189                 /* Let old code be here for a while, Joe.
 190                 //if (preg_match('/Last\sTrade:(.*?)Trade\sTime/s', $contents, $matches)) {
 191                         $val = strip_tags($matches[1]);
 192                         $val = str_replace(',', '', $val);
 193                         if ($val != 0)
 194                                 $val = 1 / $val;
 195                 }
 196                 */
 197         }
 198         elseif ($provider == 'GOOGLE')
 199         {
 200                 $val = '';
 201
 202                 $regexp = "%([\d|.]+)\s+{$curr_a}\s+=\s+<span\sclass=(.*)>([\d|.]+)\s+{$curr_b}\s*</span>%s";
 203                 if (preg_match($regexp, $contents, $matches))
 204                 {
 205                         $val = $matches[3];
 206                         $val = str_replace(',', '', $val);
 207                         if ($val != 0)
 208                                 $val = 1 / $val;
 209                 }
 210     }
 211         elseif ($provider == 'BLOOMBERG')
 212         {
 213                 $val = '';
 214                 $stmask = '<div class="price">';
 215                 $val = strstr($contents, $stmask);
 216                 $val = trim($val);
 217                 $val = substr($val, strlen($stmask));
 218                 $stmask = '</div>';
 219                 $val = strtok($val, $stmask);
 220                 $val = trim($val);
 221     }
 222         return $val;
 223 }  /* end function get_extern_rate */
 224
 225 //-----------------------------------------------------------------------------
 226
 227 function get_sql_for_exchange_rates()
 228 {
 229         $sql = "SELECT date_, rate_buy, id FROM "
 230                 .TB_PREF."exchange_rates "
 231                 ."WHERE curr_code=".db_escape($_POST['curr_abrev'])."
 232                  ORDER BY date_ DESC";
 233         return $sql;
 234 }
 235 ?>