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+// --- BEGIN COPYRIGHT BLOCK ---
+// 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; version 2 of the License.
+//
+// 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.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package com.netscape.cms.servlet.common;
+
+
+import java.lang.*;
+import java.io.*;
+import java.util.*;
+import java.math.BigInteger;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import java.io.StringWriter;
+import java.io.PrintWriter;
+
+import com.netscape.certsrv.base.*;
+import com.netscape.certsrv.logging.*;
+import com.netscape.certsrv.apps.*;
+
+
+/**
+ * File templates. This implementation will take
+ * an HTML file with a special customer tag
+ * <CMS_TEMPLATE> and replace the tag with
+ * a series of javascript variable definitions
+ * (depending on the servlet)
+ *
+ * @version $Revision$, $Date$
+ */
+public class CMSTemplate extends CMSFile {
+
+ public static final String SUFFIX = ".template";
+
+ /*==========================================================
+ * variables
+ *==========================================================*/
+
+ /* private variables */
+ private String mTemplateFileName = "";
+ private ILogger mLogger = CMS.getLogger();
+ private long mTimeStamp;
+
+ /* public vaiables */
+ public String mPreOutput;
+ public String mPostOutput;
+ public static final String TEMPLATE_TAG = "<CMS_TEMPLATE>";
+
+ /* Character set for i18n */
+
+ /* Will be set by CMSServlet.getTemplate() */
+ private String mCharset = null;
+
+ /*==========================================================
+ * constructors
+ *==========================================================*/
+
+ /**
+ * Constructor
+ * @param file template file to load
+ * @param charset character set
+ * @throws IOException if the there was an error opening the file
+ */
+ public CMSTemplate(File file, String charset) throws IOException, EBaseException {
+ mCharset = charset;
+ mAbsPath = file.getAbsolutePath();
+ mLastModified = file.lastModified();
+ try {
+ init(file);
+ } catch (IOException e) {
+ log(ILogger.LL_FAILURE,
+ CMS.getLogMessage("CMSGW_CANT_LOAD_TEMPLATE", mAbsPath, e.toString()));
+ throw new ECMSGWException(
+ CMS.getLogMessage("CMSGW_ERROR_LOADING_TEMPLATE"));
+ }
+ String content = mPreOutput + mPostOutput;
+
+ mContent = content.getBytes(mCharset);
+ }
+
+ /*==========================================================
+ * public methods
+ *==========================================================*/
+
+ /* *
+ * Load the form from the file and setup the
+ * pre/post output buffer if it is a template
+ * file. Otherwise, only post output buffer is
+ * filled.
+ * @param template the template file to load
+ * @return true if successful
+ */
+ public boolean init(File template) throws EBaseException, IOException {
+ StringBuffer buf = new StringBuffer();
+
+ /* load template */
+ String content = loadFile(template);
+
+ if (content == null) {
+ log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_TEMPLATE_EMPTY", mAbsPath));
+ throw new ECMSGWException(
+ CMS.getLogMessage("CMSGW_TEMPLATE_NO_CONTENT_1", mAbsPath));
+ }
+
+ /* time stamp */
+ Date now = CMS.getCurrentDate();
+
+ mTimeStamp = now.getTime();
+
+ /* if template file, find template tag substring and set
+ * pre/post output string
+ */
+ int location = content.indexOf(TEMPLATE_TAG);
+
+ if (location == -1) {
+ log(ILogger.LL_FAILURE, CMS.getLogMessage(
+ "CMSGW_TEMPLATE_MISSING", mAbsPath, TEMPLATE_TAG));
+ throw new ECMSGWException(
+ CMS.getLogMessage("CMSGW_MISSING_TEMPLATE_TAG_2",
+ TEMPLATE_TAG, mAbsPath));
+ }
+ mPreOutput = content.substring(0, location);
+ mPostOutput = content.substring(TEMPLATE_TAG.length() + location);
+
+ return true;
+ }
+
+ /**
+ * Write a javascript representation of 'input'
+ * surrounded by SCRIPT tags to the outputstream
+ * @param rout the outputstream to write to
+ * @param input the parameters to write
+ */
+ public void renderOutput(OutputStream rout, CMSTemplateParams input)
+ throws IOException {
+ Enumeration e = null, q = null;
+ IArgBlock r = null;
+ boolean headerBlock = false, fixedBlock = false, queryBlock = false;
+ CMSTemplateParams data = (CMSTemplateParams) input;
+ HTTPOutputStreamWriter http_out = null;
+
+ if (mCharset == null)
+ http_out = new HTTPOutputStreamWriter(rout);
+ else
+ http_out = new HTTPOutputStreamWriter(rout, mCharset);
+
+ try {
+ templateLine out = new templateLine();
+
+ // Output the prolog
+ out.print(mPreOutput);
+
+ // Output the header data
+ out.println("<SCRIPT LANGUAGE=\"JavaScript\">");
+ out.println("var header = new Object();");
+ out.println("var fixed = new Object();");
+ out.println("var recordSet = new Array;");
+ out.println("var result = new Object();");
+
+ // hack
+ out.println("var httpParamsCount = 0;");
+ out.println("var httpHeadersCount = 0;");
+ out.println("var authTokenCount = 0;");
+ out.println("var serverAttrsCount = 0;");
+ out.println("header.HTTP_PARAMS = new Array;");
+ out.println("header.HTTP_HEADERS = new Array;");
+ out.println("header.AUTH_TOKEN = new Array;");
+ out.println("header.SERVER_ATTRS = new Array;");
+
+ r = data.getHeader();
+ if (r != null) {
+ e = r.elements();
+ while (e.hasMoreElements()) {
+ headerBlock = true;
+ String n = (String) e.nextElement();
+ Object v = r.getValue(n);
+
+ out.println("header." + n + " = " + renderValue(v) + ";");
+ }
+ }
+
+ // Output the fixed data
+ r = data.getFixed();
+ if (r != null) {
+ e = r.elements();
+ while (e.hasMoreElements()) {
+ fixedBlock = true;
+ String n = (String) e.nextElement();
+ Object v = r.getValue(n);
+
+ out.println("fixed." + n + " = " + renderValue(v) + ";");
+ }
+ }
+
+ // Output the query data
+ q = data.queryRecords();
+ if (q != null && q.hasMoreElements()) {
+ queryBlock = true;
+ out.println("var recordCount = 0;");
+ out.println("var record;");
+ while (q.hasMoreElements()) {
+ out.println("record = new Object;");
+ out.println("record.HTTP_PARAMS = new Array;");
+ out.println("record.HTTP_HEADERS = new Array;");
+ out.println("record.AUTH_TOKEN = new Array;");
+ out.println("record.SERVER_ATTRS = new Array;");
+
+ // Get a query record
+ r = (IArgBlock) q.nextElement();
+ e = r.elements();
+ while (e.hasMoreElements()) {
+ String n = (String) e.nextElement();
+ Object v = r.getValue(n);
+
+ out.println("record." + n + "=" + renderValue(v) + ";");
+ }
+ out.println("recordSet[recordCount++] = record;");
+ }
+ out.println("record.recordSet = recordSet;");
+ }
+
+ //if (headerBlock)
+ out.println("result.header = header;");
+ //if (fixedBlock)
+ out.println("result.fixed = fixed;");
+ //if (queryBlock)
+ out.println("result.recordSet = recordSet;");
+ out.println("</SCRIPT>");
+ out.println(mPostOutput);
+ http_out.print(out.toString());
+
+ } catch (EBaseException ex) {
+ throw new IOException(ex.getMessage());
+ }
+ }
+
+ /**
+ * Ouput the pre-amble HTML Header including
+ * the pre-output buffer.
+ *
+ * @param out output stream specified
+ * @return success or error
+ */
+ public boolean outputProlog(PrintWriter out) {
+
+ //Debug.trace("FormCache:outputProlog");
+
+ /* output pre-output buffer */
+ out.print(mPreOutput);
+
+ /* output JavaScript variables and objects */
+ out.println("<SCRIPT LANGUAGE=\"JavaScript\">");
+ out.println("var header = new Object();");
+ out.println("var result = new Object();");
+
+ return true;
+ }
+
+ /**
+ * Output the post HTML tags and post-output
+ * buffer.
+ *
+ * @param out output stream specified
+ * @return success or error
+ */
+ public boolean outputEpilog(PrintWriter out) {
+
+ out.println("</SCRIPT>");
+ out.println(mPostOutput);
+
+ return true;
+ }
+
+ /**
+ * @return full path of template
+ */
+ public String getTemplateName() {
+ return mAbsPath;
+ }
+
+ // inherit getabspath, getContent, get last access and set last access
+
+ /*==========================================================
+ * private methods
+ *==========================================================*/
+
+ /* load file into string */
+ private String loadFile(File template) throws IOException {
+
+ // Debug.trace("FormCache:loadFile");
+
+ /* create input stream, can throw IOException */
+ FileInputStream inStream = new FileInputStream(template);
+ InputStreamReader inReader = new InputStreamReader(inStream, mCharset);;
+ BufferedReader in = new BufferedReader(inReader);
+ StringBuffer buf = new StringBuffer();
+ String line;
+
+ while ((line = in.readLine()) != null) {
+ buf.append(line);
+ buf.append('\n');
+ }
+ try {
+ in.close();
+ inStream.close();
+ } catch (IOException e) {
+ log(ILogger.LL_WARN,
+ CMS.getLogMessage("CMSGW_ERR_CLOSE_TEMPL_FILE", mAbsPath, e.getMessage()));
+ }
+ return buf.toString();
+ }
+
+ private String renderValue(Object v) {
+ String s = null;
+
+ // Figure out the type of object
+ if (v instanceof IRawJS) {
+ s = v.toString();
+ } else if (v instanceof String) {
+ if (v.equals(""))
+ s = "null";
+ else
+ s = "\"" + escapeJavaScriptString((String) v) + "\"";
+ } else if (v instanceof Integer) {
+ s = ((Integer) v).toString();
+ } else if (v instanceof Boolean) {
+
+ if (((Boolean) v).booleanValue() == true) {
+ s = "true";
+ } else {
+ s = "false";
+ }
+ } else if (v instanceof BigInteger) {
+ s = ((BigInteger) v).toString(10);
+ } else if (v instanceof Character &&
+ ((Character) v).equals(Character.valueOf((char) 0))) {
+ s = "null";
+ } else {
+ s = "\"" + v.toString() + "\"";
+ }
+
+ return s;
+ }
+
+ /**
+ * Escape the contents of src string in preparation to be enclosed in
+ * double quotes as a JavaScript String Literal within an <script>
+ * portion of an HTML document.
+ * stevep - performance improvements - about 4 times faster than before.
+ */
+ public static String escapeJavaScriptString(String v) {
+ int l = v.length();
+ char in[] = new char[l];
+ char out[] = new char[l * 4];
+ int j = 0;
+
+ v.getChars(0, l, in, 0);
+
+ for (int i = 0; i < l; i++) {
+ char c = in[i];
+
+ if ((c > 0x23) && (c!= 0x5c) && (c!= 0x3c) && (c!= 0x3e)) {
+ out[j++] = c;
+ continue;
+ }
+
+ if ((c == 0x5c) && ((i+1)<l) && (in[i+1] == 'n' ||
+ in[i+1] == 'n' || in[i+1] == 'f' || in[i+1] == 't' ||
+ in[i+1] == '\"' || in[i+1] == '\'' || in[i+1] == '\\')) {
+ out[j++] = '\\';
+ out[j++] = in[i+1];
+ i++;
+ continue;
+ }
+
+ switch (c) {
+ case '\n':
+ out[j++] = '\\';
+ out[j++] = 'n';
+ break;
+
+ case '\\':
+ out[j++] = '\\';
+ out[j++] = '\\';
+ break;
+
+ case '\"':
+ out[j++] = '\\';
+ out[j++] = '\"';
+ break;
+
+ case '\r':
+ out[j++] = '\\';
+ out[j++] = 'r';
+ break;
+
+ case '\f':
+ out[j++] = '\\';
+ out[j++] = 'f';
+ break;
+
+ case '\t':
+ out[j++] = '\\';
+ out[j++] = 't';
+ break;
+
+ case '<':
+ out[j++] = '\\';
+ out[j++] = 'x';
+ out[j++] = '3';
+ out[j++] = 'c';
+ break;
+
+ case '>':
+ out[j++] = '\\';
+ out[j++] = 'x';
+ out[j++] = '3';
+ out[j++] = 'e';
+ break;
+
+ default:
+ out[j++] = c;
+ }
+ }
+ return new String(out, 0, j);
+ }
+
+ /**
+ * Like escapeJavaScriptString(String s) but also escape '[' for
+ * HTML processing.
+ */
+ public static String escapeJavaScriptStringHTML(String v) {
+ int l = v.length();
+ char in[] = new char[l];
+ char out[] = new char[l * 4];
+ int j = 0;
+
+ v.getChars(0, l, in, 0);
+
+ for (int i = 0; i < l; i++) {
+ char c = in[i];
+
+ if (c > 0x5B) {
+ out[j++] = c;
+ continue;
+ }
+
+ if ((c == 0x5c) && ((i+1)<l) && (in[i+1] == 'n' ||
+ in[i+1] == 'n' || in[i+1] == 'f' || in[i+1] == 't')) {
+ out[j++] = '\\';
+ out[j++] = in[i+1];
+ i++;
+ continue;
+ }
+
+ switch (c) {
+ case '\n':
+ out[j++] = '\\';
+ out[j++] = 'n';
+ break;
+
+ case '\\':
+ out[j++] = '\\';
+ out[j++] = '\\';
+ break;
+
+ case '\"':
+ out[j++] = '\\';
+ out[j++] = '\"';
+ break;
+
+ case '\r':
+ out[j++] = '\\';
+ out[j++] = 'r';
+ break;
+
+ case '\f':
+ out[j++] = '\\';
+ out[j++] = 'f';
+ break;
+
+ case '\t':
+ out[j++] = '\\';
+ out[j++] = 't';
+ break;
+
+ case '<':
+ out[j++] = '\\';
+ out[j++] = 'x';
+ out[j++] = '3';
+ out[j++] = 'c';
+ break;
+ case '>':
+ out[j++] = '\\';
+ out[j++] = 'x';
+ out[j++] = '3';
+ out[j++] = 'e';
+ break;
+
+ default:
+ out[j++] = c;
+ }
+ }
+ return new String(out, 0, j);
+ }
+
+ /**
+ * for debugging, return contents that would've been outputed.
+ */
+ public String getOutput(CMSTemplateParams input)
+ throws IOException {
+ debugOutputStream out = new debugOutputStream();
+
+ renderOutput(out, input);
+ return out.toString();
+ }
+
+ private
+ class HTTPOutputStreamWriter extends OutputStreamWriter {
+ public HTTPOutputStreamWriter(OutputStream out)
+ throws UnsupportedEncodingException {
+ super(out);
+ }
+
+ public HTTPOutputStreamWriter(OutputStream out, String enc)
+ throws UnsupportedEncodingException {
+ super(out, enc);
+ }
+
+ public void print(String s) throws IOException {
+ write(s, 0, s.length());
+ flush();
+ return;
+ }
+
+ public void println(String s) throws IOException {
+ print(s);
+ write('\n');
+ flush();
+ return;
+ }
+ }
+
+
+ private class templateLine {
+ private StringBuffer s = new StringBuffer();
+ void templateLine() {
+ }
+
+ void println(String p) {
+ s.append('\n');
+ s.append(p);
+ }
+
+ void print(String p) {
+ s.append(p);
+ }
+
+ public String toString() {
+ return s.toString();
+ }
+
+ }
+
+
+ private static class debugOutputStream extends ServletOutputStream {
+ private StringWriter mStringWriter = new StringWriter();
+
+ public debugOutputStream() {
+ super();
+ }
+
+ public void write(int b) throws IOException {
+ mStringWriter.write(b);
+ }
+
+ public String toString() {
+ return mStringWriter.toString();
+ }
+
+ }
+
+}