servhtml.cpp

这是和p2p相关的一份源码

// ------------------------------------------------
// File : servhtml.cpp
// Date: 4-apr-2002
// Author: giles
// Desc: 
//		HTML support for servents, TODO: should be in its own class
//
// (c) 2002 peercast.org
// ------------------------------------------------
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// ------------------------------------------------

#include <stdlib.h>
#include "servent.h"
#include "servmgr.h"
#include "html.h"
#include "stats.h"

typedef int (*COMPARE_FUNC)(const void *,const void *);
typedef int (*COMPARE_FUNC2)(ChanHitList **, ChanHitList **);
// -----------------------------------
void Servent::addBasicHeader(HTML &html)
{
	sock->writeLine(HTTP_SC_OK);
	sock->writeLine("%s %s",HTTP_HS_SERVER,PCX_AGENT);
    sock->writeLine("%s %s",HTTP_HS_CONTENT,MIME_HTML);
	sock->writeLine("%s %s",HTTP_HS_CACHE,"no-cache");
	sock->writeLine("%s %s",HTTP_HS_CONNECTION,"close");

	sock->writeLine("");

	html.startHTML();
	html.addHead();
	html.startBody();


}

// -----------------------------------
void Servent::addHeader(HTML &html, int sel)
{
	addBasicHeader(html);



	html.startTagEnd("div align=\"center\"",HTML_VERSTRING);

	if (servMgr->downloadURL[0])
	{

		html.startTag("font color=\"#FF0000\"");
			html.startTag("div align=\"center\"");
				html.startTagEnd("h2","! Attention !");
			html.end();
		html.end();

		html.startTag("h3");
			html.startTag("div align=\"center\"");
				html.addLink("/admin?cmd=upgrade","Click here to update your client");
			html.end();
		html.end();
	}

	if (!servMgr->rootMsg.isEmpty())
	{
		String pcMsg = servMgr->rootMsg;
		pcMsg.convertTo(String::T_HTML);
		html.startTag("div align=\"center\"");
			html.startTagEnd("h3",pcMsg.cstr());
		html.end();
	}


	html.startTag("table width=\"100%%\"");

		html.startTag("tr bgcolor=\"#CCCCCC\"");
			
			if (sel >= 0)
			{
				html.startTag("td");
					html.startTag("div align=\"center\"");
					html.addLink("/admin?page=index",sel==1?"<b>Index</b>":"Index");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
						html.addLink("/admin?page=chans",sel==2?"<b>All channels</b>":"All channels");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
						html.addLink("/admin?page=mychans",sel==3?"<b>Relayed channels</b>":"Relayed channels");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
						html.addLink("/admin?page=broadcast",sel==8?"<b>Broadcast</b>":"Broadcast");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
					html.addLink("/admin?page=connections",sel==4?"<b>Connections</b>":"Connections");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
					html.addLink("/admin?page=settings",sel==5?"<b>Settings</b>":"Settings");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
					html.addLink("/admin?page=viewlog",sel==7?"<b>View Log</b>":"View Log");
					html.end();
				html.end();

				html.startTag("td");
					html.startTag("div align=\"center\"");
					html.addLink("/admin?page=logout",sel==6?"<b>Logout</b>":"Logout");
					html.end();
				html.end();
			}else{
				html.startTagEnd("td");
			}


		html.end(); // tr

	html.end(); // table

	html.startTagEnd("b","<br>");
}
// -----------------------------------
void Servent::addFooter(HTML &html)
{
	html.startTagEnd("p","<br>");
	html.startTag("table width=\"100%%\"");

		html.startTag("tr bgcolor=\"#CCCCCC\"");
			
			html.startTag("td");
				html.startTagEnd("div align=\"center\"","&copy; <a target=\"_blank\" href=/admin?cmd=redirect&url=www.peercast.org>peercast.org</a> 2003");
			html.end();

		html.end();

	html.end();


	html.end();	// body
	html.end();	// html

}
// -----------------------------------
void Servent::addAdminPage(HTML &html)
{
	html.setRefresh(servMgr->refreshHTML);
	addHeader(html,1);

	html.startTag("table border=\"0\" align=\"center\"");

			html.startTag("tr align=\"center\"");
				html.startTag("td valign=\"top\"");
					addInformation(html);
				html.end();
				html.startTag("td valign=\"top\"");
					addStatistics(html);
				html.end();
			html.end();
	html.end();

	addFooter(html);
}

// -----------------------------------
void Servent::addLogPage(HTML &html)
{
	addHeader(html,7);

	LogBuffer *lb = sys->logBuf;
	lb->lock.on();

	try
	{

		unsigned int nl = lb->currLine;
		unsigned int sp = 0;
		if (nl > lb->maxLines)
		{
			nl = lb->maxLines-1;
			sp = (lb->currLine+1)%lb->maxLines;
		}


		String tim,str;
		if (nl)
		{
			html.addLink("/admin?cmd=clearlog","Clear log<br>");
			html.addLink("#bottom"," View tail<br><br>");

			html.startTag("font size=\"-1\"");

				for(unsigned int i=0; i<nl; i++)
				{
						unsigned int bp = sp*lb->lineLen;

						if (lb->types[sp])
						{
							tim.setFromTime(lb->times[sp]);

							html.addContent(tim.cstr());
							html.addContent(" <b>[");
							html.addContent(lb->getTypeStr(lb->types[sp]));
							html.addContent("]</b> ");
						}
						str.set(&lb->buf[bp]);
						str.convertTo(String::T_HTML);

						html.addContent(str.cstr());
						html.addContent("<br>");

						sp++;
						sp %= lb->maxLines;

				}
			html.end();


			html.addLink("/admin?page=viewlog","<br>View top");
			html.startSingleTagEnd("a name=\"bottom\"");
		}
	}catch(StreamException &)
	{
	}

	lb->lock.off();


	addFooter(html);
}

// -----------------------------------
void Servent::addLoginPage(HTML &html)
{
	addHeader(html,-1);

	html.startTag("table border=\"0\" align=\"center\"");

		html.startTag("tr bgcolor=\"#cccccc\" align=\"center\"");
			html.startTagEnd("td colspan=\"2\" ","<b>Login</b>"); 
		html.end();

		html.startTag("form method=\"get\" action=\"/admin?\"");

		html.startSingleTagEnd("input name=\"cmd\" type=\"hidden\" value=\"login\"");					

		int row=0;
		// password
		html.startTableRow(row++);
			html.startTagEnd("td","Password");
			html.startTag("td");
				html.startSingleTagEnd("input name=\"pass\" size=\"10\" type=\"password\"");
			html.end();
		html.end();

		// login
		html.startTableRow(row++);
			html.startTagEnd("td","");
			html.startTag("td");
				html.startTagEnd("input name=\"submit\" type=\"submit\" id=\"submit\" value=\"Login\"");					
			html.end();
		html.end();
	html.end();

	addFooter(html);
}
// -----------------------------------
void Servent::addLogoutPage(HTML &html)
{
	addHeader(html,6);

	html.startTag("table border=\"0\" align=\"center\"");

		html.startTag("tr align=\"center\"");
			html.startTag("td colspan=\"2\" valign=\"top\"");

				html.startTag("tr align=\"center\"");
					html.startTag("td");
					if ((servMgr->authType != ServMgr::AUTH_HTTPBASIC) 
					     && !sock->host.isLocalhost()
						)
					{
						html.startTag("form method=\"get\" action=\"/admin\"");
							html.startTagEnd("input name=\"logout\" type=\"submit\" value=\"Logout\"");					
							html.startSingleTagEnd("input name=\"cmd\" type=\"hidden\" value=\"logout\"");					
						html.end();
					}
					html.end();
					html.startTag("td");
						html.startTag("form method=\"get\" action=\"/admin\"");
							html.startTagEnd("input name=\"logout\" type=\"submit\" value=\"Shutdown\"");					
							html.startSingleTagEnd("input name=\"page\" type=\"hidden\" value=\"shutdown\"");					
						html.end();
					html.end();

				html.end();
			html.end();




		html.end(); // form

	html.end(); // table

	
	addFooter(html);
}
// -----------------------------------
void Servent::addShutdownPage(HTML &html)
{
	html.startTag("h1");
		html.startTagEnd("div align=\"center\"","PeerCast will shutdown in 3 seconds");
	html.end();
	servMgr->shutdownTimer = 3;
}

// -----------------------------------
void addChannelSourceTag(HTML &html, Channel *c)
{
	const char *stype = c->getSrcTypeStr();
	const char *ctype = ChanInfo::getTypeStr(c->info.srcType);

	if (!c->sourceURL.isEmpty())
		html.startTagEnd("td","%s-%s from %s",stype,ctype,c->sourceURL.cstr()); 
	else
	{
		char ipStr[64];
		if (c->sock)
			c->sock->host.toStr(ipStr);
		else
		{
			strcpy(ipStr,"Unknown");
		}

		if (c->type == Channel::T_RELAY)
			html.startTagEnd("td","%s-%s relay from %s",stype,ctype,ipStr); 
		else if (c->type == Channel::T_BROADCAST)
			html.startTagEnd("td","%s-%s broadcast from %s",stype,ctype,ipStr); 
		else 
			html.startTagEnd("td","%s-%s from %s",stype,ctype,ipStr); 
	}
}

// -----------------------------------
void	Servent::addChanInfo(HTML &html, ChanInfo *info, Channel *ch)
{
	int row=0;

	TrackInfo track;
	String name,genre,url,desc,comment,temp,hitTime;

	track = info->track;
	track.convertTo(String::T_HTML);
	name = info->name;
	name.convertTo(String::T_HTML);
	genre = info->genre;
	genre.convertTo(String::T_HTML);
	url = info->url;
	url.convertTo(String::T_HTML);
	desc = info->desc;
	desc.convertTo(String::T_HTML);
	comment = info->comment;
	comment.convertTo(String::T_HTML);


	html.startTag("table border=\"0\" align=\"center\"");
		html.startTag("tr bgcolor=\"#cccccc\" align=\"center\"");
			html.startTagEnd("td colspan=\"2\"","<b>Channel Information</b>"); 
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Name");

			html.startTag("td");
				char idStr[64];
				info->id.toStr(idStr);
				sprintf(temp.data,"peercast://pls/%s.pls",idStr);
				html.addLink(temp.data,name.cstr());
			html.end();
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Genre");
			html.startTagEnd("td",genre.cstr());
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Desc.");
			html.startTagEnd("td",desc.cstr());
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","URL");

			html.startTag("td");
				String tmp;
				sprintf(tmp.data,"/admin?cmd=redirect&url=%s",url.cstr());
				html.addLink(tmp.data,url.cstr(),true);
			html.end();

		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Comment");
			html.startTagEnd("td",comment.cstr());
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","ID");
			char idstr[128];
			info->id.toStr(idstr);
			html.startTagEnd("td",idstr);
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Type");
			html.startTagEnd("td",ChanInfo::getTypeStr(info->contentType));
		html.end();

		html.startTableRow(row++);
			html.startTagEnd("td","Bitrate");
			html.startTagEnd("td","%d kb/s",info->bitrate);
		html.end();