logviewer.jsp

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<%
/**
 *	$RCSfile: logviewer.jsp,v $
 *	$Revision: 1.8 $
 *	$Date: 2003/03/04 22:22:21 $
 */
%>

<%@ page import="java.io.*,
                 com.jivesoftware.util.*,
                 com.jivesoftware.forum.util.SkinUtils,
                 java.text.*,
                 com.jivesoftware.base.log.Logger"
    errorPage="error.jsp"
%>

<%@ include file="global.jsp" %>

<%!
    static final String ERROR = "error";
    static final String INFO = "info";
    static final String WARN = "warn";
    static final String DEBUG = "debug";
    static final String DEFAULT = ERROR;

    static final String ASCENDING = "asc";
    static final String DESCENDING = "desc";

    static final String[] LINES = {"50","100","250","500"};

    static final String[] REFRESHES = {"None","10","30","60","90"};

    static final SimpleDateFormat formatter = new SimpleDateFormat("yyyy.MM.dd kk:mm");

    private static final String parseDate(HttpServletRequest request, User pageUser, String input) {
        if (input == null || "".equals(input)) {
            return input;
        }
        if (input.length() < 16) {
            return input;
        }
        String d = input.substring(0,16);
        // try to parse it
        try {
            Date date = formatter.parse(d);
            StringBuffer buf = new StringBuffer(input.length());
            buf.append("<span class=\"date\" title=\"").append(SkinUtils.dateToText(request,pageUser,date)).append("\">");
            buf.append(d).append("</span>");
            buf.append(input.substring(16,input.length()));
            return buf.toString();
        }
        catch (ParseException pe) {
            return input;
        }
    }

    private static final String hilite(HttpServletRequest request, User pageUser, String input) {
        if (input == null || "".equals(input)) {
            return input;
        }
        if (input.indexOf("com.jivesoftware.") > -1) {
            StringBuffer buf = new StringBuffer();
            buf.append("<span class=\"hilite\">").append(input).append("</span>");
            return buf.toString();
        }
        return input;
    }

    private static HashMap parseCookie(Cookie cookie) {
        if (cookie == null || cookie.getValue() == null) {
            HashMap empty = new HashMap();
            return empty;
        }
        StringTokenizer tokenizer = new StringTokenizer(cookie.getValue(),"&");
        HashMap valueMap = new HashMap();
        while (tokenizer.hasMoreTokens()) {
            String tok = tokenizer.nextToken();
            int pos = tok.indexOf("=");
            String name = tok.substring(0,pos);
            String value = tok.substring(pos+1,tok.length());
            valueMap.put(name,value);
        }
        return valueMap;
    }

    private static void saveCookie(HttpServletResponse response, HashMap cookie) {
        StringBuffer buf = new StringBuffer();
        for (Iterator iter=cookie.keySet().iterator(); iter.hasNext();) {
            String name = (String)iter.next();
            String value = (String)cookie.get(name);
            buf.append(name).append("=").append(value);
            if (iter.hasNext()) {
                buf.append("&");
            }
        }
        Cookie newCookie = new Cookie("jiveforums.admin.logviewer",buf.toString());
        newCookie.setPath("/");
        newCookie.setMaxAge(60*60*24*30); // one month
        response.addCookie(newCookie);
    }

    private static HashMap getLogUpdate(HttpServletRequest request, HttpServletResponse response,
            File logDir)
    {
        // Get the cookie associated with the log files
        HashMap cookie = parseCookie(CookieUtils.getCookie(request,"jiveforums.admin.logviewer"));
        String[] logs = {"error", "info", "warn", "debug"};
        HashMap newCookie = new HashMap();
        HashMap updates = new HashMap();
        for (int i=0; i<logs.length; i++) {
            // Check for the value in the cookie:
            String key = logs[i] + ".size";
            long savedSize = 0L;
            if (cookie.containsKey(key)) {
                try {
                    savedSize = Long.parseLong((String)cookie.get(key));
                }
                catch (NumberFormatException nfe) {}
            }
            // Update the size in the Map:
            File logFile = new File(logDir, "jive." + logs[i] + ".log");
            long currentSize = logFile.length();
            newCookie.put(key, ""+currentSize);
            if (currentSize != savedSize) {
                updates.put(logs[i], "true");
            }
        }
        saveCookie(response, newCookie);
        return updates;
    }
%>

<%  // Permission check
    if (!isSystemAdmin) {
        throw new UnauthorizedException("You don't have admin privileges to perform this operation.");
    }

    // Get parameters
    String log = ParamUtils.getParameter(request,"log");
    String numLinesParam = ParamUtils.getParameter(request,"lines");
    int numLines = ParamUtils.getIntParameter(request,"lines",50);
    int refresh = ParamUtils.getIntParameter(request,"refresh",10);
    String refreshParam = ParamUtils.getParameter(request,"refresh");
    boolean save = ParamUtils.getBooleanParameter(request,"save");
    String mode = ParamUtils.getParameter(request,"mode");
    boolean debugEnabled = ParamUtils.getBooleanParameter(request,"debugEnabled");
    boolean wasDebugEnabled = ParamUtils.getBooleanParameter(request,"wasDebugEnabled");
    boolean debugAlert = ParamUtils.getBooleanParameter(request,"debugAlert");

    // Enable/disable debugging
    if (request.getParameter("wasDebugEnabled") != null && wasDebugEnabled != debugEnabled) {
        JiveGlobals.setJiveProperty("log.debug.enabled",String.valueOf(debugEnabled));
        response.sendRedirect("logviewer.jsp?log=debug&debugAlert=true");
        return;
    }

    debugEnabled = "true".equals(JiveGlobals.getJiveProperty("log.debug.enabled"));

    // Set defaults
    if (log == null) {
        log = DEFAULT;
    }
    if (mode == null) {
        mode = ASCENDING;
    }
    if (numLinesParam == null) {
        numLinesParam = "50";
    }

    // Other vars
    File logDir = new File(JiveGlobals.getJiveHome(),"logs");
    String filename = "jive." + log + ".log";
    File logFile = new File(logDir, filename);
    boolean tooBig = (logFile.length() / (1024)) > 250;

    // Determine if any of the log files contents have been updated:
    HashMap newlogs = getLogUpdate(request, response, logDir);

    BufferedReader in = new BufferedReader(new FileReader(logFile));
    String line = null;
    int totalNumLines = 0;
    while ((line=in.readLine()) != null) {
        totalNumLines++;
    }
    in.close();
    // adjust the 'numLines' var to match totalNumLines if 'all' was passed in:
    if ("All".equals(numLinesParam)) {
        numLines = totalNumLines;
    }
    String[] lines = new String[numLines];
    in = new BufferedReader(new FileReader(logFile));
    // skip lines
    int start = totalNumLines - numLines;
    if (start < 0) { start = 0; }
    for (int i=0; i<start; i++) {
        in.readLine();
    }
    int i = 0;
    if (ASCENDING.equals(mode)) {
        while ((line=in.readLine()) != null && i<numLines) {
            line = parseDate(request, pageUser, line);
            line = hilite(request, pageUser, line);
            lines[i] = line;
            i++;
        }
    }
    else {
        int end = lines.length-1;
        while ((line=in.readLine()) != null && i<numLines) {
            line = parseDate(request, pageUser, line);
            line = hilite(request, pageUser, line);
            lines[end-i] = line;
            i++;
        }
    }
    numLines = start + i;
%>

<%@ include file="header.jsp" %>

<%  if (refreshParam != null && !"None".equals(refreshParam)) { %>

    <meta http-equiv="refresh" content="<%= refresh %>">

<%  } %>

<%  if (debugAlert) { %>

    <script language="JavaScript" type="text/javascript">
    alert('Your change to the debug logging will go into affect after you restart your appserver.');
    </script>

<%  } %>

<%  // Title of this page and breadcrumbs
    String title = "Log Viewer";
    String[][] breadcrumbs = {
        {"Main", "main.jsp"},
        {title, "logviewer.jsp?log=" + log}
    };
%>
<%@ include file="title.jsp" %>