Using RestrictedPython

[Rasjid Wilcox]

Hi,

I found references on Google to a discussion a little while ago about using
RestrictedPython instead of rexec and Bastion.  But I've had trouble
finding documentation.

Below is my test program.  Am I doing this the right way?

- - - -
#!/usr/bin/env python

from RestrictedPython import compile_restricted

def g(x):
    return "Function g(x)"

fn = '''
def f(x):
    return "x: " + str(x) + " x^2: " + str(x*x)

'''

fn2 = '''
def h(x):
    f = open('test-out.txt', 'w')
    f.write(x)
    f.close()
    s = 'Just wrote to a file'
    return s
'''

exp = 'str(f(3))'

cofn = compile_restricted(fn, '<string> ', 'exec')
exec(cofn)
coexp = compile_restricted(exp, '<string>', 'eval')
print "Restricted eval: " + str(eval(coexp))

f = g
print "Restricted eval: " + str(eval(coexp))

exec(fn2)
print "Native exec: " + str(h("Native exec\n"))

h = None
#cofn2 = compile(fn2, '<string>', 'exec')
cofn2 = compile_restricted(fn2, '<string>', 'exec')
exec(cofn2)
try:
    print h("Restricted exec\n")
except:
    print "Can't run restricted code?"

- - - -

I know it runs and it seems to do what I expect, but is it 'right'?

Thanks,

Rasjid.