mirror of
https://github.com/ElvishArtisan/rivendell.git
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Initial import of CVS-v2_8_branch
This commit is contained in:
Fred Gleason
397
web/rdfeed/rdfeed_script.cpp
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397
web/rdfeed/rdfeed_script.cpp
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// rdfeed_script.cpp
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//
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// An RSS Feed Generator for Rivendell.
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//
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// (C) Copyright 2002-2007 Fred Gleason <fredg@paravelsystems.com>
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//
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// $Id: rdfeed_script.cpp,v 1.5.4.1 2013/10/16 21:14:38 cvs Exp $
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <map>
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#include <qapplication.h>
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#include <qdatetime.h>
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#include <qstringlist.h>
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#include <rdconf.h>
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#include <rdconfig.h>
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#include <rdpodcast.h>
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#include <rddb.h>
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#include <rdweb.h>
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#include <rdfeedlog.h>
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#include <rdformpost.h>
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#include <rdfeed.h>
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#include <dbversion.h>
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#include <rdfeed_script.h>
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char server_name[PATH_MAX];
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MainObject::MainObject(QObject *parent,const char *name)
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:QObject(parent,name)
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{
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char keyname[10];
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int cast_id=-1;
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bool count;
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//
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// Validate Feed Key Name
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//
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if(getenv("QUERY_STRING")==NULL) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: missing feed key name\n");
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exit(0);
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}
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int arg=0;
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while((getenv("QUERY_STRING")[arg]!=0)&&
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(getenv("QUERY_STRING")[arg]!='&')&&(arg<9)) {
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keyname[arg]=getenv("QUERY_STRING")[arg];
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arg++;
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}
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if(arg==9) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: invalid feed key name\n");
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exit(0);
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}
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keyname[arg]=0;
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RDGetPostInt(getenv("QUERY_STRING")+arg+1,"cast_id",&cast_id);
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//
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// Get the Server Name
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//
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if(getenv("SERVER_NAME")==NULL) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: missing SERVER_NAME\n");
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exit(0);
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}
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strncpy(server_name,getenv("SERVER_NAME"),PATH_MAX);
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//
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// Read Configuration
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//
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RDConfig *config=new RDConfig();
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config->load();
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//
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// Determine Range
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//
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if(getenv("HTTP_RANGE")!=NULL) {
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count=ShouldCount(getenv("HTTP_RANGE"));
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}
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else {
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count=true;
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}
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//
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// Open Database
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//
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QSqlDatabase *db=QSqlDatabase::addDatabase(config->mysqlDriver());
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if(!db) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: unable to initialize connection to database\n");
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exit(0);
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}
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db->setDatabaseName(config->mysqlDbname());
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db->setUserName(config->mysqlUsername());
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db->setPassword(config->mysqlPassword());
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db->setHostName(config->mysqlHostname());
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if(!db->open()) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: unable to connect to database\n");
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db->removeDatabase(config->mysqlDbname());
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exit(0);
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}
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RDSqlQuery *q=new RDSqlQuery("select DB from VERSION");
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if(!q->first()) {
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printf("Content-type: text/html\n");
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printf("Status: 500\n\n");
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printf("rdfeed: missing/invalid database version!\n");
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db->removeDatabase(config->mysqlDbname());
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exit(0);
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}
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if(q->value(0).toUInt()!=RD_VERSION_DATABASE) {
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printf("Content-type: text/html\n");
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printf("Status: 500\n\n");
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printf("rdfeed: skewed database version!\n");
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db->removeDatabase(config->mysqlDbname());
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exit(0);
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}
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delete q;
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if(cast_id<0) {
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ServeRss(keyname,count);
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}
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ServeLink(keyname,cast_id,count);
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}
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void MainObject::ServeRss(const char *keyname,bool count)
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{
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QString sql;
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RDSqlQuery *q;
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RDSqlQuery *q1;
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sql=QString().sprintf("select CHANNEL_TITLE,CHANNEL_DESCRIPTION,\
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CHANNEL_CATEGORY,CHANNEL_LINK,CHANNEL_COPYRIGHT,\
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CHANNEL_WEBMASTER,CHANNEL_LANGUAGE,\
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LAST_BUILD_DATETIME,ORIGIN_DATETIME,\
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HEADER_XML,CHANNEL_XML,ITEM_XML,BASE_URL,ID, \
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UPLOAD_EXTENSION,CAST_ORDER,REDIRECT_PATH,\
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BASE_PREAMBLE from FEEDS \
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where KEY_NAME=\"%s\"",keyname);
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q=new RDSqlQuery(sql);
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if(!q->first()) {
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printf("Content-type: text/html\n\n");
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printf("rdfeed: no feed matches the supplied key name\n");
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exit(0);
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}
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//
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// Log the Access
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//
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if(count) {
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RDIncrementFeedCount(keyname);
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}
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//
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// Redirect if necessary
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//
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if(!q->value(16).toString().isEmpty()) {
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Redirect(q->value(16).toString());
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delete q;
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exit(0);
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}
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//
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// Generate CGI Header
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//
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printf("Content-type: application/rss+xml\n\n");
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//
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// Render Header XML
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//
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printf("%s\n",(const char *)q->value(9).toString());
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//
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// Render Channel XML
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//
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printf("<channel>\n");
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printf("%s\n",(const char *)ResolveChannelWildcards(q));
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//
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// Render Item XML
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//
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sql=QString().sprintf("select ITEM_TITLE,ITEM_DESCRIPTION,ITEM_CATEGORY,\
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ITEM_LINK,ITEM_AUTHOR,ITEM_SOURCE_TEXT,\
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ITEM_SOURCE_URL,ITEM_COMMENTS,\
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AUDIO_FILENAME,AUDIO_LENGTH,AUDIO_TIME,\
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EFFECTIVE_DATETIME,ID from PODCASTS \
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where (FEED_ID=%d)&&(STATUS=%d) \
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order by EFFECTIVE_DATETIME",
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q->value(13).toUInt(),RDPodcast::StatusActive);
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if(q->value(15).toString()=="N") {
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sql+=" desc";
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}
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q1=new RDSqlQuery(sql);
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while(q1->next()) {
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printf("<item>\n");
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printf("%s\n",(const char *)
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ResolveAuxWildcards(ResolveItemWildcards(keyname,q1,q),
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getenv("QUERY_STRING"),
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q->value(13).toUInt(),
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q1->value(7).toUInt()));
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// printf("%s\n",(const char *)ResolveItemWildcards(q1,q));
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printf("</item>\n");
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}
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delete q1;
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printf("</channel>\n");
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printf("</rss>\n");
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delete q;
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exit(0);
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}
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void MainObject::ServeLink(const char *keyname,int cast_id,bool count)
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{
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QString sql;
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RDSqlQuery *q;
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sql=QString().sprintf("select FEEDS.BASE_URL,PODCASTS.AUDIO_FILENAME from \
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FEEDS left join PODCASTS \
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on FEEDS.ID=PODCASTS.FEED_ID \
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where (FEEDS.KEY_NAME=\"%s\")&&(PODCASTS.ID=%d)",
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(const char *)keyname,cast_id);
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q=new RDSqlQuery(sql);
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if(!q->first()) {
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delete q;
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RDCgiError("Unable to retrieve cast record!");
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}
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if(count) {
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RDIncrementCastCount(keyname,cast_id);
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}
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printf("Content-type: audio/x-mpeg\n");
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printf("Location: %s/%s\n\n",(const char *)q->value(0).toString(),
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(const char *)q->value(1).toString());
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delete q;
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exit(0);
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}
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QString MainObject::ResolveChannelWildcards(RDSqlQuery *chan_q)
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{
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QString ret=chan_q->value(10).toString();
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ret.replace("%TITLE%",RDXmlEscape(chan_q->value(0).toString()));
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ret.replace("%DESCRIPTION%",RDXmlEscape(chan_q->value(1).toString()));
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ret.replace("%CATEGORY%",RDXmlEscape(chan_q->value(2).toString()));
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ret.replace("%LINK%",RDXmlEscape(chan_q->value(3).toString()));
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ret.replace("%COPYRIGHT%",RDXmlEscape(chan_q->value(4).toString()));
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ret.replace("%WEBMASTER%",RDXmlEscape(chan_q->value(5).toString()));
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ret.replace("%LANGUAGE%",RDXmlEscape(chan_q->value(6).toString()));
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ret.replace("%BUILD_DATE%",chan_q->value(7).toDateTime().
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toString("ddd, d MMM yyyy hh:mm:ss ")+"GMT");
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ret.replace("%PUBLISH_DATE%",chan_q->value(8).toDateTime().
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toString("ddd, d MMM yyyy hh:mm:ss ")+"GMT");
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ret.replace("%GENERATOR%",QString().sprintf("Rivendell %s",VERSION));
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return ret;
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}
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QString MainObject::ResolveItemWildcards(const QString &keyname,
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RDSqlQuery *item_q,RDSqlQuery *chan_q)
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{
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RDFeed *feed=new RDFeed(keyname);
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QString ret=chan_q->value(11).toString();
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ret.replace("%ITEM_TITLE%",RDXmlEscape(item_q->value(0).toString()));
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ret.replace("%ITEM_DESCRIPTION%",
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RDXmlEscape(item_q->value(1).toString()));
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ret.replace("%ITEM_CATEGORY%",
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RDXmlEscape(item_q->value(2).toString()));
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ret.replace("%ITEM_LINK%",RDXmlEscape(item_q->value(3).toString()));
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ret.replace("%ITEM_AUTHOR%",RDXmlEscape(item_q->value(4).toString()));
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ret.replace("%ITEM_SOURCE_TEXT%",
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RDXmlEscape(item_q->value(5).toString()));
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ret.replace("%ITEM_SOURCE_URL%",
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RDXmlEscape(item_q->value(6).toString()));
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ret.replace("%ITEM_COMMENTS%",
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RDXmlEscape(item_q->value(7).toString()));
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ret.replace("%ITEM_AUDIO_URL%",
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(const char *)RDXmlEscape(feed->
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audioUrl(RDFeed::LinkCounted,server_name,
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item_q->value(12).toUInt())));
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ret.replace("%ITEM_AUDIO_LENGTH%",item_q->value(9).toString());
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ret.replace("%ITEM_AUDIO_TIME%",
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RDGetTimeLength(item_q->value(10).toInt(),false,false));
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ret.replace("%ITEM_PUBLISH_DATE%",item_q->value(11).toDateTime().
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toString("ddd, d MMM yyyy hh:mm:ss ")+"GMT");
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ret.replace("%ITEM_GUID%",RDPodcast::guid(chan_q->value(12).toString(),
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item_q->value(8).toString(),
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chan_q->value(11).toUInt(),
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item_q->value(12).toUInt()));
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delete feed;
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return ret;
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}
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QString MainObject::ResolveAuxWildcards(QString xml,QString keyname,
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unsigned feed_id,unsigned cast_id)
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{
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QString sql;
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RDSqlQuery *q;
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RDSqlQuery *q1;
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keyname.replace(" ","_");
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sql=QString().sprintf("select VAR_NAME from AUX_METADATA where FEED_ID=%u",
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feed_id);
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q=new RDSqlQuery(sql);
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if(q->size()==0) {
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delete q;
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return xml;
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}
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sql="select ";
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while(q->next()) {
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sql+=q->value(0).toString().mid(1,q->value(0).toString().length()-2);
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sql+=",";
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}
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sql=sql.left(sql.length()-1);
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sql+=QString().sprintf(" from %s_FIELDS where CAST_ID=%u",
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(const char *)keyname,cast_id);
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q->seek(-1);
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q1=new RDSqlQuery(sql);
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while(q1->next()) {
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q->next();
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xml.replace(q->value(0).toString(),
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RDXmlEscape(q1->value(0).toString()));
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}
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delete q1;
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delete q;
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return xml;
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}
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bool MainObject::ShouldCount(const QString &hdr)
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{
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bool ret=false;
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QStringList lines=QStringList::split("\n",hdr);
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int n;
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QString str;
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for(unsigned i=0;i<lines.size();i++) {
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if((n=lines[i].find("="))>0) {
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if(lines[i].left(n).lower()=="bytes") {
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str=lines[i].right(lines[i].length()-n-1).stripWhiteSpace();
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n=str.find("-");
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if(n==0) {
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ret=true;
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}
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if(n>0) {
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if(str.left(n)=="0") {
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ret=true;
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}
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}
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}
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}
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}
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return ret;
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}
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void MainObject::Redirect(const QString &url)
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{
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printf("Status: 301 Moved Permanently\n");
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printf("Location: %s\n",(const char *)url);
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printf("Content-type: text/html\n");
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printf("\n");
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printf("The feed has been relocated to %s.\n",(const char *)url);
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}
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int main(int argc,char *argv[])
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{
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QApplication a(argc,argv,false);
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new MainObject(NULL,"main");
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return a.exec();
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}
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