348 lines
8.6 KiB
Lua
348 lines
8.6 KiB
Lua
|
--[[
|
||
|
|
LuCI - Lua Development Framework
|
||
|
|
|
||
|
|
Copyright 2009 Steven Barth <steven@midlink.org>
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
$Id$
|
||
|
|
]]--
|
||
|
|
|
||
|
|
require "nixio.util"
|
||
|
|
local nixio = require "nixio"
|
||
|
|
|
||
|
|
local ltn12 = require "luci.ltn12"
|
||
|
|
local util = require "luci.util"
|
||
|
|
local table = require "table"
|
||
|
|
local http = require "luci.http.protocol"
|
||
|
|
local date = require "luci.http.protocol.date"
|
||
|
|
|
||
|
|
local type, pairs, ipairs, tonumber = type, pairs, ipairs, tonumber
|
||
|
|
local unpack = unpack
|
||
|
|
|
||
|
|
module "luci.httpclient"
|
||
|
|
|
||
|
|
function chunksource(sock, buffer)
|
||
|
|
buffer = buffer or ""
|
||
|
|
return function()
|
||
|
|
local output
|
||
|
|
local _, endp, count = buffer:find("^([0-9a-fA-F]+);?.-\r\n")
|
||
|
|
while not count and #buffer <= 1024 do
|
||
|
|
local newblock, code = sock:recv(1024 - #buffer)
|
||
|
|
if not newblock then
|
||
|
|
return nil, code
|
||
|
|
end
|
||
|
|
buffer = buffer .. newblock
|
||
|
|
_, endp, count = buffer:find("^([0-9a-fA-F]+);?.-\r\n")
|
||
|
|
end
|
||
|
|
count = tonumber(count, 16)
|
||
|
|
if not count then
|
||
|
|
return nil, -1, "invalid encoding"
|
||
|
|
elseif count == 0 then
|
||
|
|
return nil
|
||
|
|
elseif count + 2 <= #buffer - endp then
|
||
|
|
output = buffer:sub(endp+1, endp+count)
|
||
|
|
buffer = buffer:sub(endp+count+3)
|
||
|
|
return output
|
||
|
|
else
|
||
|
|
output = buffer:sub(endp+1, endp+count)
|
||
|
|
buffer = ""
|
||
|
|
if count - #output > 0 then
|
||
|
|
local remain, code = sock:recvall(count-#output)
|
||
|
|
if not remain then
|
||
|
|
return nil, code
|
||
|
|
end
|
||
|
|
output = output .. remain
|
||
|
|
count, code = sock:recvall(2)
|
||
|
|
else
|
||
|
|
count, code = sock:recvall(count+2-#buffer+endp)
|
||
|
|
end
|
||
|
|
if not count then
|
||
|
|
return nil, code
|
||
|
|
end
|
||
|
|
return output
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
function request_to_buffer(uri, options)
|
||
|
|
local source, code, msg = request_to_source(uri, options)
|
||
|
|
local output = {}
|
||
|
|
|
||
|
|
if not source then
|
||
|
|
return nil, code, msg
|
||
|
|
end
|
||
|
|
|
||
|
|
source, code = ltn12.pump.all(source, (ltn12.sink.table(output)))
|
||
|
|
|
||
|
|
if not source then
|
||
|
|
return nil, code
|
||
|
|
end
|
||
|
|
|
||
|
|
return table.concat(output)
|
||
|
|
end
|
||
|
|
|
||
|
|
function request_to_source(uri, options)
|
||
|
|
local status, response, buffer, sock = request_raw(uri, options)
|
||
|
|
if not status then
|
||
|
|
return status, response, buffer
|
||
|
|
elseif status ~= 200 and status ~= 206 then
|
||
|
|
return nil, status, response
|
||
|
|
end
|
||
|
|
|
||
|
|
if response.headers["Transfer-Encoding"] == "chunked" then
|
||
|
|
return chunksource(sock, buffer)
|
||
|
|
else
|
||
|
|
return ltn12.source.cat(ltn12.source.string(buffer), sock:blocksource())
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
--
|
||
|
|
-- GET HTTP-resource
|
||
|
|
--
|
||
|
|
function request_raw(uri, options)
|
||
|
|
options = options or {}
|
||
|
|
local pr, host, port, path = uri:match("(%w+)://([%w-.]+):?([0-9]*)(.*)")
|
||
|
|
if not host then
|
||
|
|
return nil, -1, "unable to parse URI"
|
||
|
|
end
|
||
|
|
|
||
|
|
if pr ~= "http" and pr ~= "https" then
|
||
|
|
return nil, -2, "protocol not supported"
|
||
|
|
end
|
||
|
|
|
||
|
|
port = #port > 0 and port or (pr == "https" and 443 or 80)
|
||
|
|
path = #path > 0 and path or "/"
|
||
|
|
|
||
|
|
options.depth = options.depth or 10
|
||
|
|
local headers = options.headers or {}
|
||
|
|
local protocol = options.protocol or "HTTP/1.1"
|
||
|
|
headers["User-Agent"] = headers["User-Agent"] or "LuCI httpclient 0.1"
|
||
|
|
|
||
|
|
if headers.Connection == nil then
|
||
|
|
headers.Connection = "close"
|
||
|
|
end
|
||
|
|
|
||
|
|
local sock, code, msg = nixio.connect(host, port)
|
||
|
|
if not sock then
|
||
|
|
return nil, code, msg
|
||
|
|
end
|
||
|
|
|
||
|
|
sock:setsockopt("socket", "sndtimeo", options.sndtimeo or 15)
|
||
|
|
sock:setsockopt("socket", "rcvtimeo", options.rcvtimeo or 15)
|
||
|
|
|
||
|
|
if pr == "https" then
|
||
|
|
local tls = options.tls_context or nixio.tls()
|
||
|
|
sock = tls:create(sock)
|
||
|
|
local stat, code, error = sock:connect()
|
||
|
|
if not stat then
|
||
|
|
return stat, code, error
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Pre assemble fixes
|
||
|
|
if protocol == "HTTP/1.1" then
|
||
|
|
headers.Host = headers.Host or host
|
||
|
|
end
|
||
|
|
|
||
|
|
if type(options.body) == "table" then
|
||
|
|
options.body = http.urlencode_params(options.body)
|
||
|
|
end
|
||
|
|
|
||
|
|
if type(options.body) == "string" then
|
||
|
|
headers["Content-Length"] = headers["Content-Length"] or #options.body
|
||
|
|
headers["Content-Type"] = headers["Content-Type"] or
|
||
|
|
"application/x-www-form-urlencoded"
|
||
|
|
options.method = options.method or "POST"
|
||
|
|
end
|
||
|
|
|
||
|
|
if type(options.body) == "function" then
|
||
|
|
options.method = options.method or "POST"
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Assemble message
|
||
|
|
local message = {(options.method or "GET") .. " " .. path .. " " .. protocol}
|
||
|
|
|
||
|
|
for k, v in pairs(headers) do
|
||
|
|
if type(v) == "string" or type(v) == "number" then
|
||
|
|
message[#message+1] = k .. ": " .. v
|
||
|
|
elseif type(v) == "table" then
|
||
|
|
for i, j in ipairs(v) do
|
||
|
|
message[#message+1] = k .. ": " .. j
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if options.cookies then
|
||
|
|
for _, c in ipairs(options.cookies) do
|
||
|
|
local cdo = c.flags.domain
|
||
|
|
local cpa = c.flags.path
|
||
|
|
if (cdo == host or cdo == "."..host or host:sub(-#cdo) == cdo)
|
||
|
|
and (cpa == "/" or cpa .. "/" == path:sub(#cpa+1))
|
||
|
|
and (not c.flags.secure or pr == "https")
|
||
|
|
then
|
||
|
|
message[#message+1] = "Cookie: " .. c.key .. "=" .. c.value
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
message[#message+1] = ""
|
||
|
|
message[#message+1] = ""
|
||
|
|
|
||
|
|
-- Send request
|
||
|
|
sock:sendall(table.concat(message, "\r\n"))
|
||
|
|
|
||
|
|
if type(options.body) == "string" then
|
||
|
|
sock:sendall(options.body)
|
||
|
|
elseif type(options.body) == "function" then
|
||
|
|
local res = {options.body(sock)}
|
||
|
|
if not res[1] then
|
||
|
|
sock:close()
|
||
|
|
return unpack(res)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Create source and fetch response
|
||
|
|
local linesrc = sock:linesource()
|
||
|
|
local line, code, error = linesrc()
|
||
|
|
|
||
|
|
if not line then
|
||
|
|
sock:close()
|
||
|
|
return nil, code, error
|
||
|
|
end
|
||
|
|
|
||
|
|
local protocol, status, msg = line:match("^([%w./]+) ([0-9]+) (.*)")
|
||
|
|
|
||
|
|
if not protocol then
|
||
|
|
sock:close()
|
||
|
|
return nil, -3, "invalid response magic: " .. line
|
||
|
|
end
|
||
|
|
|
||
|
|
local response = {
|
||
|
|
status = line, headers = {}, code = 0, cookies = {}, uri = uri
|
||
|
|
}
|
||
|
|
|
||
|
|
line = linesrc()
|
||
|
|
while line and line ~= "" do
|
||
|
|
local key, val = line:match("^([%w-]+)%s?:%s?(.*)")
|
||
|
|
if key and key ~= "Status" then
|
||
|
|
if type(response[key]) == "string" then
|
||
|
|
response.headers[key] = {response.headers[key], val}
|
||
|
|
elseif type(response[key]) == "table" then
|
||
|
|
response.headers[key][#response.headers[key]+1] = val
|
||
|
|
else
|
||
|
|
response.headers[key] = val
|
||
|
|
end
|
||
|
|
end
|
||
|
|
line = linesrc()
|
||
|
|
end
|
||
|
|
|
||
|
|
if not line then
|
||
|
|
sock:close()
|
||
|
|
return nil, -4, "protocol error"
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Parse cookies
|
||
|
|
if response.headers["Set-Cookie"] then
|
||
|
|
local cookies = response.headers["Set-Cookie"]
|
||
|
|
for _, c in ipairs(type(cookies) == "table" and cookies or {cookies}) do
|
||
|
|
local cobj = cookie_parse(c)
|
||
|
|
cobj.flags.path = cobj.flags.path or path:match("(/.*)/?[^/]*")
|
||
|
|
if not cobj.flags.domain or cobj.flags.domain == "" then
|
||
|
|
cobj.flags.domain = host
|
||
|
|
response.cookies[#response.cookies+1] = cobj
|
||
|
|
else
|
||
|
|
local hprt, cprt = {}, {}
|
||
|
|
|
||
|
|
-- Split hostnames and save them in reverse order
|
||
|
|
for part in host:gmatch("[^.]*") do
|
||
|
|
table.insert(hprt, 1, part)
|
||
|
|
end
|
||
|
|
for part in cobj.flags.domain:gmatch("[^.]*") do
|
||
|
|
table.insert(cprt, 1, part)
|
||
|
|
end
|
||
|
|
|
||
|
|
local valid = true
|
||
|
|
for i, part in ipairs(cprt) do
|
||
|
|
-- If parts are different and no wildcard
|
||
|
|
if hprt[i] ~= part and #part ~= 0 then
|
||
|
|
valid = false
|
||
|
|
break
|
||
|
|
-- Wildcard on invalid position
|
||
|
|
elseif hprt[i] ~= part and #part == 0 then
|
||
|
|
if i ~= #cprt or (#hprt ~= i and #hprt+1 ~= i) then
|
||
|
|
valid = false
|
||
|
|
break
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
-- No TLD cookies
|
||
|
|
if valid and #cprt > 1 and #cprt[2] > 0 then
|
||
|
|
response.cookies[#response.cookies+1] = cobj
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Follow
|
||
|
|
response.code = tonumber(status)
|
||
|
|
if response.code and options.depth > 0 then
|
||
|
|
if response.code == 301 or response.code == 302 or response.code == 307
|
||
|
|
and response.headers.Location then
|
||
|
|
local nuri = response.headers.Location or response.headers.location
|
||
|
|
if not nuri then
|
||
|
|
return nil, -5, "invalid reference"
|
||
|
|
end
|
||
|
|
if not nuri:find("https?://") then
|
||
|
|
nuri = pr .. "://" .. host .. ":" .. port .. nuri
|
||
|
|
end
|
||
|
|
|
||
|
|
options.depth = options.depth - 1
|
||
|
|
if options.headers then
|
||
|
|
options.headers.Host = nil
|
||
|
|
end
|
||
|
|
sock:close()
|
||
|
|
|
||
|
|
return request_raw(nuri, options)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
return response.code, response, linesrc(true), sock
|
||
|
|
end
|
||
|
|
|
||
|
|
function cookie_parse(cookiestr)
|
||
|
|
local key, val, flags = cookiestr:match("%s?([^=;]+)=?([^;]*)(.*)")
|
||
|
|
if not key then
|
||
|
|
return nil
|
||
|
|
end
|
||
|
|
|
||
|
|
local cookie = {key = key, value = val, flags = {}}
|
||
|
|
for fkey, fval in flags:gmatch(";%s?([^=;]+)=?([^;]*)") do
|
||
|
|
fkey = fkey:lower()
|
||
|
|
if fkey == "expires" then
|
||
|
|
fval = date.to_unix(fval:gsub("%-", " "))
|
||
|
|
end
|
||
|
|
cookie.flags[fkey] = fval
|
||
|
|
end
|
||
|
|
|
||
|
|
return cookie
|
||
|
|
end
|
||
|
|
|
||
|
|
function cookie_create(cookie)
|
||
|
|
local cookiedata = {cookie.key .. "=" .. cookie.value}
|
||
|
|
|
||
|
|
for k, v in pairs(cookie.flags) do
|
||
|
|
if k == "expires" then
|
||
|
|
v = date.to_http(v):gsub(", (%w+) (%w+) (%w+) ", ", %1-%2-%3 ")
|
||
|
|
end
|
||
|
|
cookiedata[#cookiedata+1] = k .. ((#v > 0) and ("=" .. v) or "")
|
||
|
|
end
|
||
|
|
|
||
|
|
return table.concat(cookiedata, "; ")
|
||
|
|
end
|