author | Kim Alvefur <zash@zash.se> |
Mon, 07 Mar 2016 13:47:13 +0100 | |
changeset 2069 | 624e3fed6f92 |
parent 2057 | 40056a27f394 |
child 2070 | cb74e4ab13f0 |
permissions | -rw-r--r-- |
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parents:
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-- mod_http_upload |
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parents:
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-- |
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-- Copyright (C) 2015 Kim Alvefur |
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4 |
-- |
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-- This file is MIT/X11 licensed. |
2069
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mod_http_upload: Trim trailing whitespace
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-- |
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-- Implementation of HTTP Upload file transfer mechanism used by Conversations |
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-- |
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|
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-- imports |
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11 |
local st = require"util.stanza"; |
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local lfs = require"lfs"; |
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local uuid = require"util.uuid".generate; |
1970
3b748666ff97
mod_http_upload: URL-encode filename in case it contains characters that need escaping (thanks Thilo)
Kim Alvefur <zash@zash.se>
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14 |
local urlencode = require"util.http".urlencode; |
1916
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
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1910
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15 |
local t_concat = table.concat; |
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mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
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16 |
local t_insert = table.insert; |
1918
b01d60dfa405
mod_http_upload: Add missing local of string.upper (Thanks Thilo)
Kim Alvefur <zash@zash.se>
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|
17 |
local s_upper = string.upper; |
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18 |
|
1819
abacf6698d97
mod_http_upload: Include join_path function, should make it work with 0.9.x
Kim Alvefur <zash@zash.se>
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1809
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19 |
local function join_path(a, b) |
1821
1971ff719e72
mod_http_upload: Fix typo (thanks mo)
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return a .. package.config:sub(1,1) .. b; |
1819
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21 |
end |
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|
1855
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mod_http_upload: Add support for a file size limit
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23 |
-- config |
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mod_http_upload: Lower default size limit to 1MB
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24 |
local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 1024 * 1024); -- 1 MB |
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|
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26 |
-- depends |
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module:depends("http"); |
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25c28644fae8
mod_http_upload: Depend on mod_disco, allows it to be discovered when set up as a component
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module:depends("disco"); |
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|
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-- namespace |
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mod_http_upload.lua: use official namespace from XEP-0363
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local xmlns_http_upload = "urn:xmpp:http:upload"; |
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|
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module:add_feature(xmlns_http_upload); |
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|
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-- state |
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36 |
local pending_slots = module:shared("upload_slots"); |
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|
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2ce2b194d501
mod_http_upload: Make file system path configurable
Kim Alvefur <zash@zash.se>
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local storage_path = module:get_option_string(module.name .. "_path", join_path(prosody.paths.data, module.name)); |
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lfs.mkdir(storage_path); |
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parents:
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|
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-- hooks |
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module:hook("iq/host/"..xmlns_http_upload..":request", function (event) |
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local stanza, origin = event.stanza, event.origin; |
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mod_http_upload: Cache first-level child <request> in local variable
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local request = stanza.tags[1]; |
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-- local clients only |
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46 |
if origin.type ~= "c2s" then |
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origin.send(st.error_reply(stanza, "cancel", "not-authorized")); |
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return true; |
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49 |
end |
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-- validate |
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mod_http_upload: Cache first-level child <request> in local variable
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local filename = request:get_child_text("filename"); |
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if not filename or filename:find("/") then |
1854
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mod_http_upload: Include failure reason in error response
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origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename")); |
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54 |
return true; |
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mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
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55 |
end |
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local filesize = tonumber(request:get_child_text("size")); |
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if not filesize then |
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58 |
origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size")); |
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59 |
return true; |
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elseif filesize > file_size_limit then |
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61 |
origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large", |
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62 |
st.stanza("file-too-large", {xmlns=xmlns_http_upload}) |
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:tag("max-size"):text(tostring(file_size_limit)))); |
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64 |
return true; |
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65 |
end |
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66 |
local reply = st.reply(stanza); |
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67 |
reply:tag("slot", { xmlns = xmlns_http_upload }); |
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|
68 |
local random = uuid(); |
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69 |
pending_slots[random.."/"..filename] = origin.full_jid; |
1970
3b748666ff97
mod_http_upload: URL-encode filename in case it contains characters that need escaping (thanks Thilo)
Kim Alvefur <zash@zash.se>
parents:
1946
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|
70 |
local url = module:http_url() .. "/" .. random .. "/" .. urlencode(filename); |
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reply:tag("get"):text(url):up(); |
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72 |
reply:tag("put"):text(url):up(); |
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73 |
origin.send(reply); |
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|
74 |
return true; |
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75 |
end); |
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76 |
|
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77 |
-- http service |
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|
78 |
local function upload_data(event, path) |
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|
79 |
if not pending_slots[path] then |
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80 |
return 401; |
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|
81 |
end |
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82 |
local random, filename = path:match("^([^/]+)/([^/]+)$"); |
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83 |
if not random then |
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|
84 |
return 400; |
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|
85 |
end |
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86 |
if #event.request.body > file_size_limit then |
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87 |
module:log("error", "Uploaded file too large %d bytes", #event.request.body); |
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88 |
return 400; |
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89 |
end |
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90 |
local dirname = join_path(storage_path, random); |
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|
91 |
if not lfs.mkdir(dirname) then |
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parents:
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|
92 |
module:log("error", "Could not create directory %s for upload", dirname); |
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|
93 |
return 500; |
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|
94 |
end |
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95 |
local full_filename = join_path(dirname, filename); |
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96 |
local fh, ferr = io.open(full_filename, "w"); |
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97 |
if not fh then |
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98 |
module:log("error", "Could not open file %s for upload: %s", full_filename, ferr); |
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99 |
return 500; |
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parents:
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|
100 |
end |
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101 |
local ok, err = fh:write(event.request.body); |
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102 |
if not ok then |
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parents:
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|
103 |
module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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104 |
os.remove(full_filename); |
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parents:
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|
105 |
return 500; |
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parents:
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|
106 |
end |
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107 |
ok, err = fh:close(); |
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|
108 |
if not ok then |
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|
109 |
module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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|
110 |
os.remove(full_filename); |
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|
111 |
return 500; |
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|
112 |
end |
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|
113 |
module:log("info", "File uploaded by %s to slot %s", pending_slots[path], random); |
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|
114 |
pending_slots[path] = nil; |
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|
115 |
return 200; |
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|
116 |
end |
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|
117 |
|
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|
118 |
-- FIXME Duplicated from net.http.server |
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119 |
|
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120 |
local codes = require "net.http.codes"; |
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|
121 |
local headerfix = setmetatable({}, { |
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122 |
__index = function(t, k) |
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123 |
local v = "\r\n"..k:gsub("_", "-"):gsub("%f[%w].", s_upper)..": "; |
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124 |
t[k] = v; |
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125 |
return v; |
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126 |
end |
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127 |
}); |
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128 |
|
1916
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129 |
local function send_response_sans_body(response, body) |
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130 |
if response.finished then return; end |
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131 |
response.finished = true; |
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132 |
response.conn._http_open_response = nil; |
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|
133 |
|
1916
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|
134 |
local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]); |
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|
135 |
local headers = response.headers; |
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|
136 |
body = body or response.body or ""; |
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|
137 |
headers.content_length = #body; |
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|
138 |
|
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|
139 |
local output = { status_line }; |
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|
140 |
for k,v in pairs(headers) do |
24c22cbb86e4
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diff
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|
141 |
t_insert(output, headerfix[k]..v); |
1909
43fac0c2c772
mod_http_upload: Fix HEAD requests
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parents:
1878
diff
changeset
|
142 |
end |
1916
24c22cbb86e4
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|
143 |
t_insert(output, "\r\n\r\n"); |
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diff
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|
144 |
-- Here we *don't* add the body to the output |
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parents:
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|
145 |
|
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|
146 |
response.conn:write(t_concat(output)); |
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|
147 |
if response.on_destroy then |
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|
148 |
response:on_destroy(); |
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|
149 |
response.on_destroy = nil; |
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|
150 |
end |
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diff
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|
151 |
if response.persistent then |
24c22cbb86e4
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|
152 |
response:finish_cb(); |
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|
153 |
else |
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|
154 |
response.conn:close(); |
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parents:
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diff
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|
155 |
end |
1776
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parents:
diff
changeset
|
156 |
end |
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parents:
diff
changeset
|
157 |
|
1916
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parents:
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diff
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|
158 |
local serve_uploaded_files = module:depends("http_files").serve(storage_path); |
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diff
changeset
|
159 |
|
1776
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|
160 |
local function serve_head(event, path) |
1916
24c22cbb86e4
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|
161 |
event.response.send = send_response_sans_body; |
1776
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|
162 |
return serve_uploaded_files(event, path); |
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parents:
diff
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|
163 |
end |
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parents:
diff
changeset
|
164 |
|
1946
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
165 |
local function serve_hello(event) |
ff95d983940c
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parents:
1918
diff
changeset
|
166 |
event.response.headers.content_type = "text/html;charset=utf-8" |
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
167 |
return "<!DOCTYPE html>\n<h1>Hello from mod_"..module.name.."!</h1>\n"; |
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
168 |
end |
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
169 |
|
1776
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diff
changeset
|
170 |
module:provides("http", { |
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parents:
diff
changeset
|
171 |
route = { |
1946
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
172 |
["GET"] = serve_hello; |
ff95d983940c
mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents:
1918
diff
changeset
|
173 |
["GET /"] = serve_hello; |
1776
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parents:
diff
changeset
|
174 |
["GET /*"] = serve_uploaded_files; |
45f7e3c2557f
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parents:
diff
changeset
|
175 |
["HEAD /*"] = serve_head; |
45f7e3c2557f
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parents:
diff
changeset
|
176 |
["PUT /*"] = upload_data; |
45f7e3c2557f
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parents:
diff
changeset
|
177 |
}; |
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
178 |
}); |
1853
5244c9b0b297
mod_http_upload: Log a message with the upload URL and storage path for easy discovery
Kim Alvefur <zash@zash.se>
parents:
1852
diff
changeset
|
179 |
|
5244c9b0b297
mod_http_upload: Log a message with the upload URL and storage path for easy discovery
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parents:
1852
diff
changeset
|
180 |
module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path); |