OpenWrt网页支持升级本地package

来源：互联网发布：碧欧泉淘宝是正品吗编辑：程序博客网时间：2024/05/05 00:47

Install packages via web interface

Trigger to send file

in file of packages.htm(View), which represent the apperance at Client’s site, use method of POST , and input of FILE and SUBMIT . the following code can be add to packages.htm

Note: .tar.gz file should be used.

example:

<form method="post" action="<%=REQUEST_URI%>" enctype="multipart/form-data">

<% if (install and next(install)) or (remove and next(remove)) or update or upgrade then %>

<% if #stdout > 0 then %><pre><%=pcdata(stdout)%></pre><% end %>

<% if #stderr > 0 then %><pre class="error"><%=pcdata(stderr)%></pre><% end %>

</div>

<% end %>

</div>

</form>

Receive the request

system.lua(Controller), which defined a structure corresponding to the behavior options on the web page, points out how every operation be handled, typically via methods ofcall or cbi. In this case, call(“action_packages”)will be involved.

example:

entry({"admin", "system", "packages"}, call("action_packages"), _("Software"), 10)

handle packages of file

typical implementation

Refer to action_flashops in system.lua(Controller), filehandler of http need to be set to inform http that how to handle the packages,and “restore” of form value need to be handle in this function.

So insert the following code inaction_packages:

local upload_cmd = "tar -xzC/ >/dev/null 2>&1"

local fp

-- I don't known why this function doesn't take any effect indeed here,

-- so set Request.filehandler directly in http.lua

luci.http.setfilehandler(

function(meta, chunk, eof)

if not fp then

if meta and meta.name == "ipk" then

fp = io.popen(upload_cmd, "w")

end

if chunk then

fp:write(chunk)

end

if eof then

fp:close()

end

)

if luci.http.formvalue("restore") then

local upload = luci.http.formvalue("ipk")

if upload and #upload > 0 then

install["my.ipk"], out, err = ipkg.install("/my.ipk")

stdout[#stdout+1] = out

stderr[#stderr+1] = err

changes = true

os.execute("rm / my.ipk")

end

problem solution

actually, I failed to restore the uploading file by the way introduced in the previous chapter, refer to the comment(yellow color). Anyway, I found another way to fulfill the target, which is a little clumsy – insert the following code into Request.__init__ of http.lua:

local io = require "io"

local fp = nil

local restore_cmd = "tar -xzC/ >/dev/null 2>&1"

local image_tmp = "/tmp/firmware.img"

self.filehandler = function(meta, chunk, eof)

if not fp then

if meta and meta.name == "image" then

fp = io.open(image_tmp, "w")

else

fp = io.popen(restore_cmd, "w")

end

if chunk then

fp:write(chunk)

end

if eof then

fp:close()

end

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