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mod_http_upload/mod_http_upload.lua @ 2632:995d4d9f5d89
mod_storage_xmlarchive: Break out XML file reading into a function
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 21 Mar 2017 10:56:56 +0100 |
parent | 2607:a7ef9b765891 |
child | 2641:2d83e6c8160b |
rev | line source |
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1 -- mod_http_upload |
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2 -- |
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3 -- Copyright (C) 2015 Kim Alvefur |
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4 -- |
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5 -- This file is MIT/X11 licensed. |
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6 -- |
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7 -- Implementation of HTTP Upload file transfer mechanism used by Conversations |
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8 -- |
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9 |
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10 -- imports |
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11 local st = require"util.stanza"; |
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12 local lfs = require"lfs"; |
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13 local uuid = require"util.uuid".generate; |
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14 local url = require "socket.url"; |
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15 local dataform = require "util.dataforms".new; |
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16 local datamanager = require "util.datamanager"; |
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17 local t_concat = table.concat; |
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18 local t_insert = table.insert; |
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19 local s_upper = string.upper; |
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20 |
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21 local function join_path(...) |
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22 return table.concat({ ... }, package.config:sub(1,1)); |
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23 end |
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24 |
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25 -- config |
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26 local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 1024 * 1024); -- 1 MB |
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27 |
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28 --- sanity |
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29 local parser_body_limit = module:context("*"):get_option_number("http_max_content_size", 10*1024*1024); |
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30 if file_size_limit > parser_body_limit then |
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31 module:log("warn", "%s_file_size_limit exceeds HTTP parser limit on body size, capping file size to %d B", module.name, parser_body_limit); |
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32 file_size_limit = parser_body_limit; |
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33 end |
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34 |
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35 -- depends |
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36 module:depends("http"); |
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37 module:depends("disco"); |
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38 |
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39 -- namespace |
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40 local xmlns_http_upload = "urn:xmpp:http:upload"; |
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41 |
2287 | 42 -- identity and feature advertising |
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43 module:add_identity("store", "file", module:get_option_string("name", "HTTP File Upload")); |
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44 module:add_feature(xmlns_http_upload); |
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45 |
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46 module:add_extension(dataform { |
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47 { name = "FORM_TYPE", type = "hidden", value = xmlns_http_upload }, |
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48 { name = "max-file-size", type = "text-single" }, |
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49 }:form({ ["max-file-size"] = tostring(file_size_limit) }, "result")); |
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50 |
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51 -- state |
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52 local pending_slots = module:shared("upload_slots"); |
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53 |
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54 local storage_path = module:get_option_string(module.name .. "_path", join_path(prosody.paths.data, module.name)); |
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55 lfs.mkdir(storage_path); |
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56 |
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57 -- hooks |
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58 module:hook("iq/host/"..xmlns_http_upload..":request", function (event) |
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59 local stanza, origin = event.stanza, event.origin; |
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60 local request = stanza.tags[1]; |
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61 -- local clients only |
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62 if origin.type ~= "c2s" then |
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63 module:log("debug", "Request for upload slot from a %s", origin.type); |
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64 origin.send(st.error_reply(stanza, "cancel", "not-authorized")); |
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65 return true; |
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66 end |
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67 -- validate |
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68 local filename = request:get_child_text("filename"); |
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69 if not filename or filename:find("/") then |
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70 module:log("debug", "Filename %q not allowed", filename or ""); |
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71 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename")); |
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72 return true; |
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73 end |
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74 local filesize = tonumber(request:get_child_text("size")); |
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75 if not filesize then |
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76 module:log("debug", "Missing file size"); |
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77 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size")); |
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78 return true; |
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79 elseif filesize > file_size_limit then |
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80 module:log("debug", "File too large (%d > %d)", filesize, file_size_limit); |
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81 origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large") |
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82 :tag("file-too-large", {xmlns=xmlns_http_upload}) |
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83 :tag("max-file-size"):text(tostring(file_size_limit))); |
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84 return true; |
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85 end |
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86 local reply = st.reply(stanza); |
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87 reply:tag("slot", { xmlns = xmlns_http_upload }); |
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88 |
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89 local random; |
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90 repeat random = uuid(); |
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91 until lfs.mkdir(join_path(storage_path, random)) or not lfs.attributes(join_path(storage_path, random, filename)) |
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92 |
2477 | 93 datamanager.list_append(origin.username, origin.host, module.name, { filename = join_path(storage_path, random, filename), size = filesize, time = os.time() }); |
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94 local slot = random.."/"..filename; |
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95 pending_slots[slot] = origin.full_jid; |
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96 local base_url = module:http_url(); |
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97 local slot_url = url.parse(base_url); |
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98 slot_url.path = url.parse_path(slot_url.path or "/"); |
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99 t_insert(slot_url.path, random); |
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100 t_insert(slot_url.path, filename); |
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101 slot_url.path.is_directory = false; |
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102 slot_url.path = url.build_path(slot_url.path); |
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103 slot_url = url.build(slot_url); |
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104 reply:tag("get"):text(slot_url):up(); |
0a3f526779a1
mod_http_upload: Construct the upload slot URL using the LuaSocket URL library (fixes #717)
Kim Alvefur <zash@zash.se>
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2285
diff
changeset
|
105 reply:tag("put"):text(slot_url):up(); |
1772
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parents:
diff
changeset
|
106 origin.send(reply); |
2489
9d154c929319
mod_http_upload: Log the directory and filename joined
Kim Alvefur <zash@zash.se>
parents:
2479
diff
changeset
|
107 origin.log("debug", "Given upload slot %q", slot); |
1772
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diff
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|
108 return true; |
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parents:
diff
changeset
|
109 end); |
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
110 |
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parents:
diff
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|
111 -- http service |
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changeset
|
112 local function upload_data(event, path) |
2467
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changeset
|
113 local uploader = pending_slots[path]; |
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|
114 if not uploader then |
2191
e47046abf568
mod_http_upload: Add more logging
Kim Alvefur <zash@zash.se>
parents:
2066
diff
changeset
|
115 module:log("warn", "Attempt to upload to unknown slot %q", path); |
2193
40824a38d505
mod_http_upload: Return nil if no upload slot is found (should prevent conflicts between multiple instances on the same path)
Kim Alvefur <zash@zash.se>
parents:
2192
diff
changeset
|
116 return; -- 404 |
1772
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parents:
diff
changeset
|
117 end |
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diff
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|
118 local random, filename = path:match("^([^/]+)/([^/]+)$"); |
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parents:
diff
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|
119 if not random then |
2207
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diff
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|
120 module:log("warn", "Invalid file path %q", path); |
1772
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|
121 return 400; |
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diff
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|
122 end |
1851
03c5639882a7
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Kim Alvefur <zash@zash.se>
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1850
diff
changeset
|
123 if #event.request.body > file_size_limit then |
2192
bb8f7785aed7
mod_http_upload: Demote some errors to warnings
Kim Alvefur <zash@zash.se>
parents:
2191
diff
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|
124 module:log("warn", "Uploaded file too large %d bytes", #event.request.body); |
1851
03c5639882a7
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diff
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|
125 return 400; |
03c5639882a7
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diff
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|
126 end |
2467
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|
127 pending_slots[path] = nil; |
2478
1fae2a0a4092
mod_http_upload: Fix to include base storage path
Kim Alvefur <zash@zash.se>
parents:
2477
diff
changeset
|
128 local full_filename = join_path(storage_path, random, filename); |
2469
43f7637f0143
mod_http_upload: Make sure that target file does not exist prior to upload
Kim Alvefur <zash@zash.se>
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|
129 if lfs.attributes(full_filename) then |
43f7637f0143
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|
130 module:log("warn", "File %s exists already, not replacing it", full_filename); |
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131 return 409; |
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|
132 end |
1772
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133 local fh, ferr = io.open(full_filename, "w"); |
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|
134 if not fh then |
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|
135 module:log("error", "Could not open file %s for upload: %s", full_filename, ferr); |
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parents:
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|
136 return 500; |
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parents:
diff
changeset
|
137 end |
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|
138 local ok, err = fh:write(event.request.body); |
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parents:
diff
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|
139 if not ok then |
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parents:
diff
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|
140 module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
45f7e3c2557f
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parents:
diff
changeset
|
141 os.remove(full_filename); |
45f7e3c2557f
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parents:
diff
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|
142 return 500; |
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diff
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|
143 end |
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parents:
diff
changeset
|
144 ok, err = fh:close(); |
45f7e3c2557f
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parents:
diff
changeset
|
145 if not ok then |
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parents:
diff
changeset
|
146 module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
45f7e3c2557f
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parents:
diff
changeset
|
147 os.remove(full_filename); |
45f7e3c2557f
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diff
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|
148 return 500; |
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parents:
diff
changeset
|
149 end |
2467
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parents:
2445
diff
changeset
|
150 module:log("info", "File uploaded by %s to slot %s", uploader, random); |
2607
a7ef9b765891
mod_http_upload: Return 201 on successful PUT (as per XEP-0363 and RFC 2616) (Thanks Flow)
Matthew Wild <mwild1@gmail.com>
parents:
2489
diff
changeset
|
151 return 201; |
1772
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parents:
diff
changeset
|
152 end |
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parents:
diff
changeset
|
153 |
1912
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
154 -- FIXME Duplicated from net.http.server |
24c22cbb86e4
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parents:
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diff
changeset
|
155 |
24c22cbb86e4
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parents:
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diff
changeset
|
156 local codes = require "net.http.codes"; |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
157 local headerfix = setmetatable({}, { |
24c22cbb86e4
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parents:
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diff
changeset
|
158 __index = function(t, k) |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
159 local v = "\r\n"..k:gsub("_", "-"):gsub("%f[%w].", s_upper)..": "; |
24c22cbb86e4
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parents:
1906
diff
changeset
|
160 t[k] = v; |
24c22cbb86e4
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parents:
1906
diff
changeset
|
161 return v; |
24c22cbb86e4
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parents:
1906
diff
changeset
|
162 end |
24c22cbb86e4
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parents:
1906
diff
changeset
|
163 }); |
1772
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parents:
diff
changeset
|
164 |
1912
24c22cbb86e4
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parents:
1906
diff
changeset
|
165 local function send_response_sans_body(response, body) |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
166 if response.finished then return; end |
24c22cbb86e4
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parents:
1906
diff
changeset
|
167 response.finished = true; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
168 response.conn._http_open_response = nil; |
2065
624e3fed6f92
mod_http_upload: Trim trailing whitespace
Kim Alvefur <zash@zash.se>
parents:
2053
diff
changeset
|
169 |
1912
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
170 local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
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parents:
1906
diff
changeset
|
171 local headers = response.headers; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
172 body = body or response.body or ""; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
173 headers.content_length = #body; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
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parents:
1906
diff
changeset
|
174 |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
175 local output = { status_line }; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
176 for k,v in pairs(headers) do |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
177 t_insert(output, headerfix[k]..v); |
1905
43fac0c2c772
mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents:
1874
diff
changeset
|
178 end |
1912
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
179 t_insert(output, "\r\n\r\n"); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
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parents:
1906
diff
changeset
|
180 -- Here we *don't* add the body to the output |
24c22cbb86e4
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parents:
1906
diff
changeset
|
181 |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
182 response.conn:write(t_concat(output)); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
183 if response.on_destroy then |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
184 response:on_destroy(); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
185 response.on_destroy = nil; |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
186 end |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
187 if response.persistent then |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
188 response:finish_cb(); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
189 else |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
190 response.conn:close(); |
24c22cbb86e4
mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
191 end |
1772
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parents:
diff
changeset
|
192 end |
45f7e3c2557f
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
193 |
1912
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
194 local serve_uploaded_files = module:depends("http_files").serve(storage_path); |
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
195 |
1772
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
196 local function serve_head(event, path) |
1912
24c22cbb86e4
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Kim Alvefur <zash@zash.se>
parents:
1906
diff
changeset
|
197 event.response.send = send_response_sans_body; |
1772
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parents:
diff
changeset
|
198 return serve_uploaded_files(event, path); |
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
199 end |
45f7e3c2557f
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
200 |
1942
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:
1914
diff
changeset
|
201 local function serve_hello(event) |
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:
1914
diff
changeset
|
202 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:
1914
diff
changeset
|
203 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:
1914
diff
changeset
|
204 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:
1914
diff
changeset
|
205 |
1772
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parents:
diff
changeset
|
206 module:provides("http", { |
45f7e3c2557f
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
207 route = { |
1942
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:
1914
diff
changeset
|
208 ["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:
1914
diff
changeset
|
209 ["GET /"] = serve_hello; |
1772
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
210 ["GET /*"] = serve_uploaded_files; |
45f7e3c2557f
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
211 ["HEAD /*"] = serve_head; |
45f7e3c2557f
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
212 ["PUT /*"] = upload_data; |
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mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
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213 }; |
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mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
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214 }); |
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mod_http_upload: Log a message with the upload URL and storage path for easy discovery
Kim Alvefur <zash@zash.se>
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215 |
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mod_http_upload: Log a message with the upload URL and storage path for easy discovery
Kim Alvefur <zash@zash.se>
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216 module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path); |