prosody-modules: mod_inject_ecaps2/mod_inject

annotate mod_inject_ecaps2/mod_inject_ecaps2.lua @ 5401:c8d04ac200fc

mod_http_oauth2: Reject loopback URIs as client_uri This really should be a proper website with info, https://localhost is not good enough. Ideally we'd validate that it's got proper DNS and is actually reachable, but triggering HTTP or even DNS lookups seems like it would carry abuse potential that would best to avoid.

author	Kim Alvefur <zash@zash.se>
date	Tue, 02 May 2023 16:20:55 +0200
parents	ce946d9d982e
children

rev	line source
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	1 module:depends("cache_c2s_caps");
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	2
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	3 local st = require "util.stanza";
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	4 local hashes = require "util.hashes";
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	5 local base64 = require "util.encodings".base64;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	6 local t_insert, t_sort, t_concat = table.insert, table.sort, table.concat;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	7
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	8 local algorithms = module:get_option_set("ecaps2_hashes", { "sha-256", "sha-512" });
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	9
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	10 -- TODO: Add all of the other hashes supported.
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	11 local algorithm_map = {
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	12 ["sha-256"] = hashes.sha256;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	13 ["sha-512"] = hashes.sha512;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	14 };
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	15
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	16 -- TODO: move that to util.caps maybe.
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	17 local function calculate_hash(disco_info)
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	18 local identities, features, extensions = {}, {}, {};
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	19 for _, tag in ipairs(disco_info) do
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	20 if tag.name == "identity" then
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	21 t_insert(identities, ((tag.attr.category or "").."\31"..
5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	22 (tag.attr.type or "").."\31"..
5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	23 (tag.attr["xml:lang"] or "").."\31"..
5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	24 (tag.attr.name or "").."\31\30"));
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	25 elseif tag.name == "feature" then
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	26 t_insert(features, (tag.attr.var or "").."\31");
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	27 elseif tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	28 local form = {};
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	29 for _, field in ipairs(tag.tags) do
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	30 if field.name == "field" and field.attr.xmlns == "jabber:x:data" and field.attr.var then
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	31 local values = {};
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	32 for _, value in ipairs(field.tags) do
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	33 if value.name == "value" and value.attr.xmlns == "jabber:x:data" then
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	34 value = #value.tags == 0 and value:get_text();
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	35 if value then t_insert(values, value.."\31"); end
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	36 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	37 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	38 t_sort(values);
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	39 if #values > 0 then
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	40 t_insert(form, field.attr.var.."\31"..t_concat(values, "\31").."\31\30");
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	41 else
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	42 t_insert(form, field.attr.var.."\31\30");
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	43 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	44 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	45 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	46 t_sort(form);
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	47 form = t_concat(form, "\29").."\29";
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	48 t_insert(extensions, form);
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	49 else
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	50 return nil, "Unknown element in disco#info";
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	51 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	52 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	53 t_sort(identities);
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	54 t_sort(features);
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	55 t_sort(extensions);
2908 5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	56 if #identities > 0 then identities = t_concat(identities, "\28").."\28"; else identities = "\28"; end
5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	57 if #features > 0 then features = t_concat(features).."\28"; else features = "\28"; end
5665d14dcc6e mod_inject_ecaps2: Add Lua 5.1 compatibility by replacing \xHEX with \DECIMAL in strings Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2907 diff changeset	58 if #extensions > 0 then extensions = t_concat(extensions, "\28").."\28"; else extensions = "\28"; end
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	59 return features..identities..extensions;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	60 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	61
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	62 local function caps_handler(event)
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	63 local origin = event.origin;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	64
2913 3fb4f72b3dfd mod_inject_ecaps2: Check for unset presence Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2910 diff changeset	65 if origin.presence == nil or origin.presence:get_child("c", "urn:xmpp:caps") then
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	66 return;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	67 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	68
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	69 local disco_info = origin.caps_cache;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	70 if disco_info == nil then
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	71 return;
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	72 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	73
2910 415455faccae mod_inject_ecaps2: Return if calculating the hash failed Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2909 diff changeset	74 local extension_string, err = calculate_hash(disco_info);
415455faccae mod_inject_ecaps2: Return if calculating the hash failed Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2909 diff changeset	75 if extension_string == nil then
415455faccae mod_inject_ecaps2: Return if calculating the hash failed Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2909 diff changeset	76 module:log("warn", "Failed to calculate ecaps2 hash: %s", err)
415455faccae mod_inject_ecaps2: Return if calculating the hash failed Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2909 diff changeset	77 return;
415455faccae mod_inject_ecaps2: Return if calculating the hash failed Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2909 diff changeset	78 end
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	79
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	80 local ecaps2 = st.stanza("c", { xmlns = "urn:xmpp:caps" });
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	81 for algo in algorithms do
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	82 local func = algorithm_map[algo];
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	83 if func ~= nil then
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	84 local hash = base64.encode(func(extension_string));
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	85 ecaps2:tag("hash", { xmlns = "urn:xmpp:hashes:2"; algo = algo })
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	86 :text(hash)
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	87 :up();
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	88 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	89 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	90
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	91 module:log("debug", "Injected ecaps2 element in presence");
3105 ce946d9d982e mod_inject_ecaps2: Inject the <c/> element in the presence, not util.hashes. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 2913 diff changeset	92 origin.presence:add_child(ecaps2);
2907 776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	93 end
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	94
776017c92076 mod_inject_ecaps2: New module adding support for XEP-0390 to all local clients supporting XEP-0115 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	95 module:hook("c2s-capabilities-changed", caps_handler);

Mercurial > prosody-modules

annotate mod_inject_ecaps2/mod_inject_ecaps2.lua @ 5401:c8d04ac200fc