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Giving priority to transfer-encoding first than content-length, as mentioned in rfc2616, section 4.4.

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isChunked now checks for transfer-encoding: identity instead of transfer-encoding: chunked. If transfer encoding is present and it is not identity, chunked encoding is considered. Also rfc2616, section 4.4 (item 2)
This commit is contained in:
joao
2009-09-15 03:47:46 +00:00
parent b9d1591739
commit 4c13b99e95
1 changed files with 19 additions and 10 deletions
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29
nselib/http.lua
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@@ -516,11 +516,7 @@ function getNextResult( full_response, method )
-- If it is a get response, attach body to response -- If it is a get response, attach body to response
if method == "get" then if method == "get" then
body_start = body_start + 1 -- fixing body start offset body_start = body_start + 1 -- fixing body start offset
length = getLength( header ) if isChunked(header) then
if length then
length = length + #header
body = full_response:sub(body_start, length)
elseif isChunked(header) then
full_response = full_response:sub(body_start) full_response = full_response:sub(body_start)
local body_delim = ( full_response:match( "\r\n" ) and "\r\n" ) or local body_delim = ( full_response:match( "\r\n" ) and "\r\n" ) or
( full_response:match( "\n" ) and "\n" ) or nil ( full_response:match( "\n" ) and "\n" ) or nil
@@ -528,12 +524,18 @@ function getNextResult( full_response, method )
local chunks = {} local chunks = {}
for tmp_size, chunk in get_chunks(full_response, 1, body_delim) do for tmp_size, chunk in get_chunks(full_response, 1, body_delim) do
chunks[#chunks + 1] = chunk chunks[#chunks + 1] = chunk
size = tmp_size size = tmp_size
end end
body = table.concat(chunks) body = table.concat(chunks)
else else
stdnse.print_debug("Didn't find chunked encoding or content-length field, not splitting response") length = getLength( header )
body = full_response:sub(body_start) if length then
length = length + #header
body = full_response:sub(body_start, length)
else
stdnse.print_debug("Didn't find chunked encoding or content-length field, not splitting response")
body = full_response:sub(body_start)
end
end end
end end
@@ -556,8 +558,15 @@ function isChunked( header )
local encoding = nil local encoding = nil
for number, line in ipairs( header or {} ) do for number, line in ipairs( header or {} ) do
line = line:lower() line = line:lower()
encoding = line:match("(transfer%-encoding: chunked)") encoding = line:match("transfer%-encoding: (.*)")
if encoding then return true end if encoding then
print(encoding)
if encoding:match("identity") then
return false
else
return true
end
end
end end
return false return false
end end