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annotate tcb.js @ 11:bde6607a3620

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changed TCB/sample module code a bit.
author Atul Varma <varmaa@toolness.com>
date Fri, 19 Jun 2009 15:07:12 -0700
parents 16a605ff036c
children e14f433f3a58
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10
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
Atul Varma <varmaa@toolness.com>
parents: 8
diff changeset
1 // This security function is called by the platform whenever a
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
Atul Varma <varmaa@toolness.com>
parents: 8
diff changeset
2 // particular property needs to be accessed on a particular object.
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
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parents: 8
diff changeset
3 function checkAccess(obj, id) {
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bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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4 var frame = stack().caller;
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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5 if (!(frame.filename == null ||
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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6 frame.filename == "tcb.js"))
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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7 print("access request from " + frame.filename + " on property '" + id +
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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8 "' of " + obj);
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
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9 // TODO: this won't work for the 'caller' property, looks like we need
bde6607a3620 changed TCB/sample module code a bit.
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parents: 10
diff changeset
10 // to look it up ourselves.
10
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
Atul Varma <varmaa@toolness.com>
parents: 8
diff changeset
11 return lookupProperty(obj, id);
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
Atul Varma <varmaa@toolness.com>
parents: 8
diff changeset
12 }
16a605ff036c The TCB can now define a global checkAccess() handler. It also has access to a lookupProperty() function that can retrieve an attribute of an object without initiating security checks or property getters.
Atul Varma <varmaa@toolness.com>
parents: 8
diff changeset
13
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e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
Atul Varma <varmaa@toolness.com>
parents: 7
diff changeset
14 // This function is called by the platform whenever an uncaught exception
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
Atul Varma <varmaa@toolness.com>
parents: 7
diff changeset
15 // occurs.
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
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parents: 7
diff changeset
16 function handleError() {
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
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parents: 7
diff changeset
17 printTraceback(lastExceptionTraceback);
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
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parents: 7
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18 print(lastException);
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
Atul Varma <varmaa@toolness.com>
parents: 7
diff changeset
19 }
e14f496e6e08 added a handleError() function to the TCB, which is called whenever an unhandled exception occurs. Also fixed a bug in the setting of lastException.
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parents: 7
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20
5
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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21 function printTraceback(frame) {
4
71de19be1054 Added a native stack() function.
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22 print("Traceback (most recent call last):");
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1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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23 if (frame === undefined)
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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24 frame = stack();
4
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25 var lines = [];
71de19be1054 Added a native stack() function.
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26 while (frame) {
71de19be1054 Added a native stack() function.
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27 var line = (' File "' + frame.filename + '", line ' +
71de19be1054 Added a native stack() function.
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28 frame.lineNo + ', in ' + frame.functionName);
71de19be1054 Added a native stack() function.
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29 lines.splice(0, 0, line);
71de19be1054 Added a native stack() function.
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30 frame = frame.caller;
71de19be1054 Added a native stack() function.
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31 }
71de19be1054 Added a native stack() function.
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32 print(lines.join('\n'));
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33 }
71de19be1054 Added a native stack() function.
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34
5
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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35 function throwError() {
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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36 function innerThrowError() {
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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37 throw new Error("hi");
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
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38 }
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
39 innerThrowError();
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
40 }
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
41
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
42 try {
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
43 throwError();
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
Atul Varma <varmaa@toolness.com>
parents: 4
diff changeset
44 } catch (e) {
1f38f4f61768 added global lastException and lastExceptionTraceback properties to the TCB global, which are similar to python's exc_info().
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parents: 4
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45 }
2
1f3e9c8df4f0 Script is now read from tcb.js.
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46
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1b374020485b Added more code to sample securableModule
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parents: 6
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47 var module = require("sample-module.js", {blop: "hello"});
6
500e267ed094 Added a really simple securableModule require() implementation.
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parents: 5
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48
500e267ed094 Added a really simple securableModule require() implementation.
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49 print("module.foo() is " + module.foo());
500e267ed094 Added a really simple securableModule require() implementation.
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50
2
1f3e9c8df4f0 Script is now read from tcb.js.
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51 var wrapped = wrap({}, {});