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ROC/modules/file_upload/cms_file_uploader_module.e

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note
description: "file_upload application root class"
date: "$Date$"
revision: "$Revision$"
class
CMS_FILE_UPLOADER_MODULE
inherit
CMS_MODULE
rename
module_api as file_upload_api
redefine
install,
initialize,
setup_hooks,
permissions,
file_upload_api
end
CMS_HOOK_MENU_SYSTEM_ALTER
SHARED_EXECUTION_ENVIRONMENT
create
make
feature {NONE} -- Initialization
make
do
name := "file_uploader"
version := "1.0"
description := "Service to upload files, and manage them."
package := "file"
end
feature -- Access
name: STRING
permissions: LIST [READABLE_STRING_8]
-- List of permission ids, used by this module, and declared.
do
Result := Precursor
Result.force ("admin uploaded files")
Result.force ("upload files")
end
feature {CMS_API} -- Module Initialization
initialize (api: CMS_API)
-- <Precursor>
do
Precursor (api)
if file_upload_api = Void then
create file_upload_api.make (api)
end
end
feature {CMS_API}-- Module management
install (api: CMS_API)
-- install the module
local
sql: STRING
l_file_upload_api: like file_upload_api
d: DIRECTORY
do
-- create a database table
if attached {CMS_STORAGE_SQL_I} api.storage as l_sql_storage then
-- FIXME: This is not used, is it planned in the future?
if not l_sql_storage.sql_table_exists ("file_upload_table") then
sql := "[
CREATE TABLE file_upload_table(
`id` INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL CHECK("id">=0),
`name` VARCHAR(100) NOT NULL,
`uploaded_date` DATE,
`size` INTEGER
);
]"
l_sql_storage.sql_execute_script (sql, Void)
if l_sql_storage.has_error then
api.logger.put_error ("Could not initialize database for file uploader module", generating_type)
end
end
end
create l_file_upload_api.make (api)
create d.make_with_path (l_file_upload_api.uploads_location)
if not d.exists then
d.recursive_create_dir
end
file_upload_api := l_file_upload_api
Precursor (api)
end
feature {CMS_API} -- Access: API
file_upload_api: detachable CMS_FILE_UPLOADER_API
-- <Precursor>
feature -- Access: router
setup_router (a_router: WSF_ROUTER; a_api: CMS_API)
-- <Precursor>
local
-- www: WSF_FILE_SYSTEM_HANDLER
do
map_uri_template_agent (a_router, "/upload/", agent execute_upload (?, ?, a_api), Void) -- Accepts any method GET, HEAD, POST, PUT, DELETE, ...
map_uri_template_agent (a_router, "/upload/{filename}", agent display_uploaded_file_info (?, ?, a_api), a_router.methods_get)
-- create www.make_with_path (document_root)
-- www.set_directory_index (<<"index.html">>)
-- www.set_not_found_handler (agent execute_not_found_handler)
-- a_router.handle("", www, a_router.methods_get)
end
feature -- Hooks
setup_hooks (a_hooks: CMS_HOOK_CORE_MANAGER)
do
a_hooks.subscribe_to_menu_system_alter_hook (Current)
end
menu_system_alter (a_menu_system: CMS_MENU_SYSTEM; a_response: CMS_RESPONSE)
local
link: CMS_LOCAL_LINK
do
-- login in demo did somehow not work
-- if a_response.has_permission ("upload files") then
create link.make ("Upload", "upload/")
a_menu_system.primary_menu.extend (link)
-- end
end
--feature -- Configuration
-- document_root: PATH
-- -- Document root to look for files or directories
-- once
-- Result := execution_environment.current_working_path.extended ("site")
-- end
-- files_root: PATH
-- -- Uploaded files will be stored in `files_root' folder
-- local
-- tmp: PATH
-- once
-- tmp := document_root.extended ("files")
-- Result := tmp.extended ("uploaded_files")
-- end
feature -- Handler
execute_not_found_handler (uri: READABLE_STRING_8; req: WSF_REQUEST; res: WSF_RESPONSE)
-- `uri' is not found, redirect to default page
do
res.redirect_now_with_content (req.script_url ("/"), uri + ": not found. %N Redirectioin to" + req.script_url ("/"), "text/html")
end
display_uploaded_file_info (req: WSF_REQUEST; res: WSF_RESPONSE; api: CMS_API)
local
body: STRING_8
r: CMS_RESPONSE
f: CMS_FILE
fn: READABLE_STRING_32
do
check req.is_get_request_method end
create {GENERIC_VIEW_CMS_RESPONSE} r.make (req, res, api)
create body.make_empty
if attached {WSF_STRING} req.path_parameter ("filename") as p_filename then
fn := p_filename.value
body.append ("<h1>File %"" + api.html_encoded (fn) + "%"</h1>%N")
body.append ("<div class=%"uploaded-file%">%N") -- To ease css customization.
if attached file_upload_api as l_file_upload_api then
f := l_file_upload_api.new_uploads_file (create {PATH}.make_from_string (fn))
-- FIXME: get CMS information related to this file ...
body.append ("<p>Open the media <a href=%"" + req.script_url ("/" + l_file_upload_api.file_link (f).location) + "%">")
body.append (api.html_encoded (f.filename))
body.append ("</a>.</p>%N")
if attached f.location.extension as ext then
if
ext.is_case_insensitive_equal_general ("png")
or ext.is_case_insensitive_equal_general ("jpg")
then
body.append ("<div><img src=%"" + req.script_url ("/" + l_file_upload_api.file_link (f).location) + "%" /></div>")
end
end
end
body.append ("%N</div>%N")
end
r.add_to_primary_tabs (create {CMS_LOCAL_LINK}.make ("Uploaded files", "upload/"))
r.set_main_content (body)
r.execute
end
execute_upload (req: WSF_REQUEST; res: WSF_RESPONSE; api: CMS_API)
local
body: STRING_8
r: CMS_RESPONSE
do
if req.is_get_head_request_method or req.is_post_request_method then
create body.make_empty
body.append ("<h1> Upload files </h1>%N")
create {GENERIC_VIEW_CMS_RESPONSE} r.make (req, res, api)
if r.has_permission ("upload files") then
-- create body
body.append ("<p>Please choose some file(s) to upload.</p>")
-- create form to choose files and upload them
body.append ("<form action=%"" + req.script_url ("/upload/") + "%" enctype=%"multipart/form-data%" method=%"POST%"> %N")
body.append ("<input name=%"file-name[]%" type=%"file%" multiple> %N")
body.append ("<button type=submit>Upload</button>%N")
body.append ("</form>%N")
if req.is_post_request_method then
process_uploaded_files (req, api, body)
end
else
create {FORBIDDEN_ERROR_CMS_RESPONSE} r.make (req, res, api)
end
-- Build the response.
append_uploaded_file_album_to (req, api, body)
r.set_main_content (body)
else
create {BAD_REQUEST_ERROR_CMS_RESPONSE} r.make (req, res, api)
end
r.execute
end
process_uploaded_files (req: WSF_REQUEST; api: CMS_API; a_output: STRING)
-- show all uploaded files
local
-- stored: BOOLEAN
-- file_system_handler: WSF_FILE_SYSTEM_HANDLER
-- file_system_upload_handler: CMS_FILE_UPLOAD_FILE_SYSTEM_HANDLER
l_uploaded_file: CMS_UPLOADED_FILE
uf: WSF_UPLOADED_FILE
-- ut: FILE_UTILITIES
-- files_root: PATH
do
if attached file_upload_api as l_file_upload_api then
-- if has uploaded files, then store them
if req.has_uploaded_file then
a_output.append ("<ul class=%"uploaded-files%"><strong>Uploaded file(s):</strong>%N")
across
req.uploaded_files as ic
loop
uf := ic.item
create l_uploaded_file.make_with_uploaded_file (l_file_upload_api.uploads_location, uf)
a_output.append ("<li>")
a_output.append (api.html_encoded (l_uploaded_file.filename))
l_file_upload_api.save_uploaded_file (l_uploaded_file)
-- FIXME: display for information, about the new disk filename.
if l_file_upload_api.error_handler.has_error then
a_output.append (" <span class=%"error%">failed!</span>")
end
a_output.append ("</li>")
end
a_output.append ("</ul>%N")
end
end
end
append_uploaded_file_album_to (req: WSF_REQUEST; api: CMS_API; a_output: STRING)
local
d: DIRECTORY
f: CMS_FILE
p: PATH
rel: PATH
do
if attached file_upload_api as l_file_upload_api then
create rel.make_from_string (l_file_upload_api.uploads_directory_name)
p := api.files_location.extended_path (rel)
a_output.append ("<ul class=%"directory-index%"><strong>Index of uploads:</strong>%N")
create d.make_with_path (p)
if d.exists then
across
d.entries as ic
loop
if ic.item.is_current_symbol then
-- Ignore
elseif ic.item.is_parent_symbol then
-- Ignore for now.
else
f := l_file_upload_api.new_file (rel.extended_path (ic.item))
if f.is_directory then
a_output.append ("<li class=%"directory%">")
else
a_output.append ("<li class=%"file%">")
end
a_output.append ("<a href=%"" + api.percent_encoded (f.filename) + "%">")
a_output.append (api.html_encoded (f.filename))
a_output.append ("</a>")
a_output.append ("( <a href=%"" + req.script_url ("/" + l_file_upload_api.file_link (f).location) + "%">")
a_output.append ("media</a>)")
a_output.append ("</li>%N")
end
end
end
a_output.append ("</ul>%N")
end
end
feature -- Mapping helper: uri template agent (analogue to the demo-module)
map_uri_template (a_router: WSF_ROUTER; a_tpl: STRING; h: WSF_URI_TEMPLATE_HANDLER; rqst_methods: detachable WSF_REQUEST_METHODS)
-- Map `h' as handler for `a_tpl', according to `rqst_methods'.
require
a_tpl_attached: a_tpl /= Void
h_attached: h /= Void
do
a_router.map (create {WSF_URI_TEMPLATE_MAPPING}.make (a_tpl, h), rqst_methods)
end
map_uri_template_agent (a_router: WSF_ROUTER; a_tpl: READABLE_STRING_8; proc: PROCEDURE [TUPLE [req: WSF_REQUEST; res: WSF_RESPONSE]]; rqst_methods: detachable WSF_REQUEST_METHODS)
-- Map `proc' as handler for `a_tpl', according to `rqst_methods'.
require
a_tpl_attached: a_tpl /= Void
proc_attached: proc /= Void
do
map_uri_template (a_router, a_tpl, create {WSF_URI_TEMPLATE_AGENT_HANDLER}.make (proc), rqst_methods)
end
end