From: Roman Bazalevskiy <rvb@rvb.name>
Date: Wed, 10 Oct 2018 09:42:42 +0000 (+0300)
Subject: Приведение в более приличный вид с выносом используемых базовых функций в отдельную... 
X-Git-Url: https://git.rvb.name/lua-filemanager.git/commitdiff_plain/8ae76db7435b037ba94af69023adc7f795f51691?ds=inline;hp=2ab2f7398805613c07c9d31c2968537928b87a39

Приведение в более приличный вид с выносом используемых базовых функций в отдельную библиотеку.
---

diff --git a/etc/config/filemanager b/etc/config/filemanager
index daffa4f..1154ecc 100644
--- a/etc/config/filemanager
+++ b/etc/config/filemanager
@@ -1,3 +1,4 @@
 
 config filemanager 'config'
-	option basedir '/mnt/'
+	option basedir '/mnt'
+	option tmpdir '/tmp'
diff --git a/usr/lib/lua/cgi.lua b/usr/lib/lua/cgi.lua
index f5108ee..e9068e5 100644
--- a/usr/lib/lua/cgi.lua
+++ b/usr/lib/lua/cgi.lua
@@ -1,5 +1,9 @@
 -- cgi util module
 
+local uci = require("uci")
+local u_c = uci.cursor()
+local tmppath = u_c.get("filemanager","config","tmpdir")
+
 local prevbuf = ""
 local blocksize = 4096
 local _M = {}
@@ -31,7 +35,7 @@ function _M.new(req)
       req.boundary = "--" .. req.boundary
    end
    -- this is useful only if you have /tmp on tmpfs like in openwrt. otherwise can be set to ""
-   req.tempdir = "/tmp"
+   req.tempdir = tmppath
    req.post = {}
 end
 
@@ -113,4 +117,4 @@ function _M.parse_request_body (req)
    return 400, "Malformed POST. Boundary not properly ended with CRLF or --."
 end
 
-return _M
\ No newline at end of file
+return _M
diff --git a/usr/lib/lua/luafm.lua b/usr/lib/lua/luafm.lua
new file mode 100644
index 0000000..2de767a
--- /dev/null
+++ b/usr/lib/lua/luafm.lua
@@ -0,0 +1,102 @@
+#!/usr/bin/lua
+
+local uci = require "uci" 
+local fs = require "nixio.fs"
+local u_c = uci.cursor()
+local basepath = u_c.get("filemanager","config","basedir")
+
+local _M = {}
+
+local bp = basepath:match("(.*)/")
+if bp and bp ~= "" then
+  basepath = bp 
+end
+_M.basepath = basepath;
+
+function _M.is_in_dir(file, dir)
+  if file == dir then
+    return true
+  else   
+    return file:sub(1, #dir) == dir
+  end  
+end
+
+function _M.path_valid(path)
+  return _M.is_in_dir(path,_M.basepath) and fs.access(path,"r")
+end
+
+function _M.dir_path_valid(path)
+  return _M.is_in_dir(path,_M.basepath) and fs.stat(path,"type")=="dir" and fs.access(path,"w")
+end
+
+function _M.new_path_valid(path)
+  local dirpath = fs.dirname(path)
+  return _M.is_in_dir(dirpath,_M.basepath) and fs.access(dirpath,"w")
+end
+
+function _M.make_path(path)
+  local realpath = fs.realpath(_M.basepath..'/'..path)
+  if _M.path_valid(realpath) then
+    return realpath
+  else
+    return nil
+  end    
+end
+
+function _M.make_new_path(path)
+  local realpath = fs.realpath(fs.dirname(_M.basepath..'/'..path))..'/'..fs.basename(path)
+  if _M.new_path_valid(realpath) then
+    return realpath
+  else
+    return nil
+  end    
+end
+
+function _M.make_dir_path(path)
+  local realpath = fs.realpath(_M.basepath..'/'..path)
+  if _M.dir_path_valid(realpath) then
+    return realpath
+  else
+    return nil
+  end    
+end
+
+function _M.rm(item)
+  local ftype = fs.stat(item,"type")
+  if ftype == "reg" then
+    return fs.remove(item)
+  elseif ftype == "dir" then
+    local dir = fs.dir(item)
+    for file in dir do
+      if not _M.rm(item..'/'..file) then
+        return false
+      end
+    end
+    return fs.rmdir(item)  
+  else
+    return false  
+  end
+end
+
+function _M.chmod(item,mode,recursive)
+  local result = fs.chmod(item,mode)
+  if result and recursive then
+    local dir = fs.dir(item)
+    if dir then
+      for file in dir do
+        local ftype = fs.stat(item..'/'..file,"type")
+        if ftype == "dir" then
+          result = _M.chmod(item..'/'..file,mode,recursive)
+        elseif ftype == "reg" then
+          result = _M.chmod(item..'/'..file,string.gsub(mode,"x","-"),false)  
+        end
+        if not result then
+          break
+        end  
+      end
+    end
+  end
+  return result
+end
+
+return _M
diff --git a/www/cgi-bin/fs b/www/cgi-bin/fs
index cee5f0f..81282d7 100755
--- a/www/cgi-bin/fs
+++ b/www/cgi-bin/fs
@@ -3,51 +3,7 @@
 local os = require "os"
 local fs = require "nixio.fs"
 local json = require "json"
-local uci = require("uci")
-
-local function is_in_dir(file, dir)
-  if file == dir then
-    return true
-  else   
-    return file:sub(1, #dir) == dir
-  end  
-end
-
-local function rm(item)
-  local ftype = fs.stat(item,"type")
-  if ftype == "reg" then
-    return fs.remove(item)
-  elseif ftype == "dir" then
-    local dir = fs.dir(item)
-    for file in dir do
-      if not rm(item..'/'..file) then
-        return false
-      end
-    end
-    return fs.rmdir(item)  
-  end
-end
-
-local function chmod(item,mode,recursive)
-  local result = fs.chmod(item,mode)
-  if result and recursive then
-    local dir = fs.dir(item)
-    if dir then
-      for file in dir do
-        local ftype = fs.stat(item..'/'..file,"type")
-        if ftype == "dir" then
-          result = chmod(item..'/'..file,mode,recursive)
-        elseif ftype == "reg" then
-          result = chmod(item..'/'..file,string.gsub(mode,"x","-"),false)  
-        end
-        if not result then
-          break
-        end  
-      end
-    end
-  end
-  return result
-end
+local luafm = require("luafm")
 
 print("Content-type: text/html; charset=utf-8")
 print("Cache-control: no-cache")
@@ -64,9 +20,6 @@ local request=io.read("*all")
 local params=json.decode(request)
 local action=params["action"]
 
-local u_c = uci.cursor()
-local basepath = u_c.get("filemanager","config","basedir")
-
 local path
 local items
 local item
@@ -89,15 +42,15 @@ local command
 
 if action == "list" then
 
-  path = fs.realpath(basepath..'/'..params["path"])
-  
-  if path and is_in_dir(path,basepath) and fs.access(path,"r") then
+  path = luafm.make_path(params["path"])
+
+  if path then
     files = {}
     local rec
     for name in fs.dir(path) do
       basename=fs.realpath(path..'/'..name)
       if basename then
-        fstat=fs.stat(fs.realpath(path..'/'..name))
+        fstat=fs.stat(basename)
         if fstat["type"]=="reg" then
           ftype="file"
         elseif fstat["type"]=="dir" then
@@ -118,11 +71,16 @@ if action == "list" then
 
 elseif action == "rename" then
 
-  item = fs.realpath(basepath..'/'..params["item"])
-  newItemPath = fs.realpath(basepath..'/'..fs.dirname(params["newItemPath"]))..'/'..fs.basename(params["newItemPath"])
+  item = luafm.make_path(params["item"])
+  newItemPath = luafm.make_new_path(params["newItemPath"])
 
-  if is_in_dir(item,basepath) and is_in_dir(newItemPath,basepath) and item ~= basepath and newItemPath ~= basepath then
-    result = { result = { success=fs.rename(item,newItemPath), error="" } }
+  if item and newItemPath and item ~= luafm.basepath and newItemPath ~= luafm.basepath then
+    result = fs.rename(item,newItemPath)
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot rename requested file/directory" } }
+    end  
   else
     result = { result = { success=false, error="Invalid path request" } }
   end
@@ -130,18 +88,18 @@ elseif action == "rename" then
 elseif action == "move" then
 
   items = params["items"]
-  newPath = fs.realpath(basepath..'/'..params["newPath"])
+  newPath = luafm.make_dir_path(params["newPath"])
   
-  if is_in_dir(newPath,basepath) then
+  if newPath then
 
     result = true
 
     for key,item in pairs(items) do
 
-      item = fs.realpath(basepath..'/'..item)
-      basename = fs.basename(item)
+      item = luafm.make_path(item)
 
-      if is_in_dir(item,basepath) and item ~= basepath then
+      if item and item ~= luafm.basepath then
+        basename = fs.basename(item)
         result = fs.move(item,newPath.."/"..basename)
         if not result then 
           break
@@ -153,7 +111,11 @@ elseif action == "move" then
       
     end  
 
-    result = { result = { success=result, error="" } }
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot move requested file/directory" } }
+    end  
 
   else
 
@@ -164,26 +126,27 @@ elseif action == "move" then
 elseif action == "copy" then
 
   items = params["items"]
-  newPath = fs.realpath(basepath..'/'..params["newPath"])
-  singleFilename = params["singleFilename"]
-  if singleFilename then
-    singleFilename = fs.basename(singleFilename)
-  end
+  newPath = luafm.make_dir_path(params["newPath"])
+
+  if newPath then
 
-  if is_in_dir(newPath,basepath) then
+    singleFilename = params["singleFilename"]
+    if singleFilename then
+      singleFilename = fs.basename(singleFilename)
+    end
 
     result = true
 
     for key,item in pairs(items) do
 
-      item = fs.realpath(basepath..'/'..item)
-      if singleFilename then
-        basename = singleFilename
-      else  
-        basename = fs.basename(item)
-      end
+      item = luafm.make_path(item)
 
-      if is_in_dir(item,basepath) and item ~= basepath then
+      if item and item ~= luafm.basepath then
+        if singleFilename then
+          basename = singleFilename
+        else  
+          basename = fs.basename(item)
+        end
         result = fs.copy(item,newPath.."/"..basename)
         if not result then 
           break
@@ -195,7 +158,11 @@ elseif action == "copy" then
 
     end  
 
-    result = { result = { success=result, error="" } }
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot copy requested file/directory" } }
+    end  
 
   else
 
@@ -211,10 +178,10 @@ elseif action == "remove" then
 
   for key,item in pairs(items) do
 
-    item = fs.realpath(basepath..'/'..item)
+    item = luafm.make_path(item)
 
-    if is_in_dir(item,basepath) and item ~= basepath then
-      result = rm(item)
+    if item and item ~= luafm.basepath then
+      result = luafm.rm(item)
       if not result then 
         break
       end
@@ -225,13 +192,17 @@ elseif action == "remove" then
 
   end
 
-  result = { result = { success=result, error="" } }
+  if result then
+    result = { result = { success=true, error="" } }
+  else
+    result = { result = { success=false, error="Cannot remove requested file/directory" } }
+  end  
 
 elseif action == "getContent" then
 
-  item = fs.realpath(basepath..'/'..params["item"])
+  item = luafm.make_path(params["item"])
   
-  if is_in_dir(item,basepath) and item ~= basepath then
+  if item and item ~= luafm.basepath then
     content = fs.readfile(item)
     result = { result = content }
   else
@@ -240,21 +211,31 @@ elseif action == "getContent" then
 
 elseif action == "edit" then
 
-  item = fs.realpath(basepath..'/'..params["item"])
+  item = luafm.make_path(params["item"])
   content = params["content"]
   
-  if is_in_dir(item,basepath) and item ~= basepath then
-    result = { result = { success=fs.writefile(item,content), error="" } }
+  if item and item ~= luafm.basepath then
+    result = fs.writefile(item,content)
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot write requested file content" } }
+    end  
   else
     result = { result = { success=false, error="Invalid path request" } }
   end
 
 elseif action == "createFolder" then
 
-  newPath = fs.realpath(basepath..'/'..fs.dirname(params["newPath"]))..'/'..fs.basename(params["newPath"])
+  newPath = luafm.make_new_path(params["newPath"])
   
-  if is_in_dir(newPath,basepath) and newPath ~= basepath then
-    result = { result = { success=fs.mkdir(newPath), error="" } }
+  if newPath and newPath ~= luafm.basepath then
+    result = fs.mkdir(newPath)
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot create folder" } }
+    end  
   else
     result = { result = { success=false, error="Invalid path request" } }
   end
@@ -262,6 +243,7 @@ elseif action == "createFolder" then
 elseif action == "changePermissions" then
 
   items = params["items"]
+
   if params["perms"] then
     mode = params["perms"]
   else
@@ -276,10 +258,10 @@ elseif action == "changePermissions" then
 
     for key,item in pairs(items) do
 
-      item = fs.realpath(basepath..'/'..item)
+      item = luafm.make_path(item)
 
-      if is_in_dir(item,basepath) and item ~= basepath then
-        result = chmod(item,mode,recursive)
+      if item and item ~= luafm.basepath then
+        result = luafm.chmod(item,mode,recursive)
         if not result then 
           break
         end
@@ -290,7 +272,11 @@ elseif action == "changePermissions" then
 
     end
 
-    result = { result = { success=result, error="" } }
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Cannot change permissions" } }
+    end  
 
   else
   
@@ -304,16 +290,16 @@ elseif action == "compress" then
   destination = params["destination"]
   compressedFilename = params["compressedFilename"]
 
-  newPath = fs.realpath(basepath..'/'..destination)..'/'..fs.basename(params["compressedFilename"])
+  newPath = luafm.make_new_path(destination..'/'..fs.basename(params["compressedFilename"]))
 
   result = true
   files = ""
 
   for key,item in pairs(items) do
 
-    realitem = fs.realpath(basepath..'/'..item)
+    realitem = luafm.make_path(item)
 
-    if is_in_dir(realitem,basepath) and realitem ~= basepath then
+    if realitem and realitem ~= luafm.basepath then
       item = item:match("/(.*)")
       files = files.." "..item
     else
@@ -325,28 +311,40 @@ elseif action == "compress" then
   
   if files then
 
-    command = "cd "..basepath.."; zip -r "..newPath..files
-    os.execute(command)
+    command = "cd "..luafm.basepath.."; zip -r "..newPath..files
+    result = os.execute(command)
+
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Archiver returned error" } }
+    end  
+
+  else
+
+      result = { result = { success=false, error="No files selected" } }
   
   end
 
-  result = { result = { success=result, error="" } }
-
 elseif action == "extract" then
 
-  item = fs.realpath(basepath..'/'..params["item"])
+  item = luafm.make_path(params["item"])
   destination = params["destination"]
   folderName = params["folderName"]
 
-  newPath = fs.realpath(basepath..'/'..destination)..'/'..fs.basename(params["folderName"])
+  newPath = luafm.make_new_path(destination..'/'..fs.basename(params["folderName"]))
 
   result = true
   files = ""
 
-  if is_in_dir(item,basepath) and is_in_dir(newPath,basepath) and item ~= basepath then
+  if item and newPath and item ~= luafm.basepath then
     command = "unzip "..item.." -d "..newPath
-    os.execute(command)
-    result = { result = { success=true, error="" } }
+    result = os.execute(command)
+    if result then
+      result = { result = { success=true, error="" } }
+    else
+      result = { result = { success=false, error="Archiver returned error" } }
+    end  
   else
     result = { result = { success=false, error="Invalid path request" } }
   end
diff --git a/www/cgi-bin/fs-download b/www/cgi-bin/fs-download
index 5ae634a..d33ec96 100755
--- a/www/cgi-bin/fs-download
+++ b/www/cgi-bin/fs-download
@@ -2,17 +2,9 @@
 
 nixio = require "nixio"
 fs = require "nixio.fs"
-uci = require("uci")
 util = require "luci.util"
 ltn12 = require "ltn12"
-
-local function is_in_dir(file, dir)
-  if file == dir then
-    return true
-  else   
-    return file:sub(1, #dir) == dir
-  end  
-end
+luafm = require "luafm"
 
 args = {}
 
@@ -21,17 +13,14 @@ for dummy,param in pairs(util.split(nixio.getenv('QUERY_STRING'),'&')) do
   args[val[1]] = util.urldecode(val[2],true)
 end
 
-local u_c = uci.cursor()
-local basepath = u_c.get("filemanager","config","basedir")
-
-path = fs.realpath(basepath..'/'..args["path"])
+path = luafm.make_path(args["path"])
 if path then
   file = io.open(path,"rb")
 else
   file = nil
 end  
 
-if file and is_in_dir(path,basepath) then
+if file then
   print("Content-Type: application/octet-stream")
   print('Content-Disposition: attachment; filename="'..fs.basename(args["path"])..'"')
   print("\r")
diff --git a/www/cgi-bin/fs-upload b/www/cgi-bin/fs-upload
index 46d047e..101c841 100755
--- a/www/cgi-bin/fs-upload
+++ b/www/cgi-bin/fs-upload
@@ -1,21 +1,11 @@
 #!/usr/bin/lua
 
 local cgi = require "cgi"
-local uci = require("uci")
-local fs = require("nixio.fs")
-local os = require("os")
-local json = require("json")
+local fs = require "nixio.fs"
+local luafm = require "luafm"
 
 local req = {}
 
-local function is_in_dir(file, dir)
-  if file == dir then
-    return true
-  else   
-    return file:sub(1, #dir) == dir
-  end  
-end
-
 print("\r")
 
 cgi.new(req)
@@ -27,15 +17,11 @@ end
 destfile=io.open(req.post["destination"][1]["tempname"],"r")
 destination=destfile:read("*all")
 
-local u_c = uci.cursor()
-local basepath = u_c.get("filemanager","config","basedir")
-
 for k, v in pairs(req.post) do
   for j, v in pairs(req.post[k]) do
     if v["filename"] then
-      path = basepath..destination..'/'..v.filename
-      dir = fs.realpath(fs.dirname(path))
-      if dir and is_in_dir(dir,basepath) then
+      path = luafm.make_new_path(destination..'/'..v.filename)
+      if path then
         fs.copy(req.post[k][j].tempname, path)
       end
     end