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if not modules then modules = { } end modules ['cont-run'] = {
version = 1.001,
comment = "companion to cont-yes.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- When a style is loaded there is a good change that we never enter
-- this code.
local report = logs.reporter("system")
local type, tostring = type, tostring
local report = logs.reporter("sandbox","call")
local fastserialize = table.fastserialize
local quoted = string.quoted
local possiblepath = sandbox.possiblepath
local qualified = { }
local writeable = { }
local readable = { }
local blocked = { }
local trace_files = false
local trace_calls = false
local nofcalls = 0
local nofrejected = 0
local logfilename = "sandbox.log"
local function registerstats()
statistics.register("sandboxing", function()
if trace_files then
return string.format("%s calls, %s rejected, logdata in '%s'",nofcalls,nofrejected,logfilename)
else
return string.format("%s calls, %s rejected",nofcalls,nofrejected)
end
end)
registerstats = false
end
local function logsandbox(details)
local comment = details.comment
local result = details.result
local arguments = details.arguments
for i=1,#arguments do
local argument = arguments[i]
local t = type(argument)
if t == "string" then
arguments[i] = quoted(argument)
if trace_files and possiblepath(argument) then
local q = qualified[argument]
if q then
local c = q[comment]
if c then
local r = c[result]
if r then
c[result] = r + 1
else
c[result] = r
end
else
q[comment] = {
[result] = 1
}
end
else
qualified[argument] = {
[comment] = {
[result] = 1
}
}
end
end
elseif t == "table" then
arguments[i] = fastserialize(argument)
else
arguments[i] = tostring(argument)
end
end
if trace_calls then
report("%s(%,t) => %l",details.comment,arguments,result)
end
nofcalls = nofcalls + 1
if not result then
nofrejected = nofrejected + 1
end
end
local ioopen = sandbox.original(io.open)
local function logsandboxfiles(name,what,asked,okay)
-- we're only interested in permitted access
if not okay then
blocked [asked] = blocked [asked] or 0 + 1
elseif what == "*" or what == "w" then
writeable[asked] = writeable[asked] or 0 + 1
else
readable [asked] = readable [asked] or 0 + 1
end
end
function sandbox.logcalls()
if not trace_calls then
trace_calls = true
sandbox.setlogger(logsandbox)
if registerstats then
registerstats()
end
end
end
function sandbox.logfiles()
if not trace_files then
trace_files = true
sandbox.setlogger(logsandbox)
sandbox.setfilenamelogger(logsandboxfiles)
luatex.registerstopactions(function()
table.save(logfilename,{
calls = {
nofcalls = nofcalls,
nofrejected = nofrejected,
filenames = qualified,
},
checkednames = {
readable = readable,
writeable = writeable,
blocked = blocked,
},
})
end)
if registerstats then
registerstats()
end
end
end
trackers.register("sandbox.tracecalls",sandbox.logcalls)
trackers.register("sandbox.tracefiles",sandbox.logfiles)
local sandboxing = environment.arguments.sandbox
if sandboxing then
report("enabling sandbox")
sandbox.enable()
if type(sandboxing) == "string" then
sandboxing = utilities.parsers.settings_to_hash(sandboxing)
if sandboxing.calls then
sandbox.logcalls()
end
if sandboxing.files then
sandbox.logfiles()
end
end
-- Nicer would be if we could just disable write 18 and keep os.execute
-- which in fact we can do by defining write18 as macro instead of
-- primitive ... todo.
-- We block some potential escapes from protection.
context [[
\let\primitive \relax
\let\normalprimitive\relax
\let\normalwrite \relax
]]
end
function commands.processjob()
environment.initializefilenames() -- todo: check if we really need to pre-prep the filename
local arguments = environment.arguments
local suffix = environment.suffix
local filename = environment.filename -- hm, not inputfilename !
if not filename or filename == "" then
-- skip
elseif suffix == "xml" or arguments.forcexml then
-- Maybe we should move the preamble parsing here as it
-- can be part of (any) loaded (sub) file. The \starttext
-- wrapping might go away.
report("processing as xml: %s",filename)
context.starttext()
context.xmlprocess("main",filename,"")
context.stoptext()
elseif suffix == "cld" or arguments.forcecld then
report("processing as cld: %s",filename)
context.runfile(filename)
elseif suffix == "lua" or arguments.forcelua then
-- The wrapping might go away. Why is is it there in the
-- first place.
report("processing as lua: %s",filename)
context.starttext()
context.ctxlua(string.format('dofile("%s")',filename))
context.stoptext()
elseif suffix == "mp" or arguments.forcemp then
report("processing as metapost: %s",filename)
context.starttext()
context.processMPfigurefile(filename)
context.stoptext()
-- elseif suffix == "prep" then
--
-- -- Why do we wrap here. Because it can be xml? Let's get rid
-- -- of prepping in general.
--
-- context.starttext()
-- context.input(filename)
-- context.stoptext()
else
-- \writestatus{system}{processing as tex}
-- We have a regular tex file so no \starttext yet as we can
-- load fonts.
-- context.enabletrackers { "resolvers.*" }
context.input(filename)
-- context.disabletrackers { "resolvers.*" }
end
context.finishjob()
end
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