原来的
几天来，我一直在尝试将适用于以前版本的开源 Ejabberd 模块 (mod_offline_http_post) 适应当前版本 (20.04)。例如，某些部分现在对于导出很重要，例如 mod_options 和 mod_depends。它们不是模块源代码的一部分。我添加了它们。我仍然有一个错误。
.ejabberd-modules/sources/mod_offline_http_post/src/mod_offline_http_post.erl
%% name of module must match file name
%% Update: info@ph-f.nl
-module(mod_offline_http_post).
-author("dev@codepond.org").
-behaviour(gen_mod).
-export([start/2, stop/1, depends/2, mod_options/1, create_message/1, create_message/3]).
%% Required by ?INFO_MSG macros
-include("logger.hrl").
-include("scram.hrl").
-include("xmpp.hrl").
start(_Host, _Opt) ->
?INFO_MSG("mod_offline_http_post loading", []),
inets:start(),
?INFO_MSG("HTTP client started", []),
ejabberd_hooks:add(offline_message_hook, _Host, ?MODULE, create_message, 1).
stop (_Host) ->
?INFO_MSG("stopping mod_offline_http_post", []),
ejabberd_hooks:delete(offline_message_hook, _Host, ?MODULE, create_message, 1).
depends(_Host, _Opts) ->
[].
mod_options(_Host) ->
[].
create_message({Action, Packet} = Acc) when (Packet#message.type == chat) and (Packet#message.body /= []) ->
[{text, _, Body}] = Packet#message.body,
post_offline_message(Packet#message.from, Packet#message.to, Body, Packet#message.id),
Acc;
create_message(Acc) ->
Acc.
create_message(_From, _To, Packet) when (Packet#message.type == chat) and (Packet#message.body /= []) ->
Body = fxml:get_path_s(Packet, [{elem, list_to_binary("body")}, cdata]),
MessageId = fxml:get_tag_attr_s(list_to_binary("id"), Packet),
post_offline_message(_From, _To, Body, MessageId),
ok.
post_offline_message(From, To, Body, MessageId) ->
?INFO_MSG("Posting From ~p To ~p Body ~p ID ~p~n",[From, To, Body, MessageId]),
Token = gen_mod:get_module_opt(To#jid.lserver, ?MODULE, auth_token, fun(S) -> iolist_to_binary(S) end, list_to_binary("")),
PostUrl = gen_mod:get_module_opt(To#jid.lserver, ?MODULE, post_url, fun(S) -> iolist_to_binary(S) end, list_to_binary("")),
ToUser = To#jid.luser,
FromUser = From#jid.luser,
Vhost = To#jid.lserver,
case gen_mod:get_module_opt(To#jid.lserver, ?MODULE, confidential, false) of
true -> Data = string:join(["to=", binary_to_list(ToUser), "&from=", binary_to_list(FromUser), "&vhost=", binary_to_list(Vhost), "&messageId=", binary_to_list(MessageId)], "");
false -> Data = string:join(["to=", binary_to_list(ToUser), "&from=", binary_to_list(FromUser), "&vhost=", binary_to_list(Vhost), "&body=", binary_to_list(Body), "&messageId=", binary_to_list(MessageId)], "")
end,
Request = {binary_to_list(PostUrl), [{"Authorization", binary_to_list(Token)}], "application/x-www-form-urlencoded", Data},
httpc:request(post, Request,[],[]),
?INFO_MSG("post request sent", [])..ejabberd-modules/sources/mod_offline_http_post/conf/mod_offline_http_post.yml
modules:
mod_offline_http_post:
auth_token: "secret"
post_url: "http://SERVER_IP_ADDRESS/end_of_url"
confidential: false
### Local Variables:
### mode: yaml
### End:
### vim: set filetype=yaml tabstop=8如果需要，我可以提供更多详细信息。
在此先感谢您的帮助。
编辑 1
现在看来它正在工作......当向离线用户发送消息并且现在可以识别选项时，会有一个日志。一旦没有更多问题，我将发布我为使其工作所做的工作，作为答案。这，对于其他人。
剩下的问题是我怀疑该模块是否被调用。我谈到的日志不是来自模块，而可能来自 Ejabberd 路由器。我谈论它是因为过去没有这样的事情。那么，有一些积极的事情正在发生。为了使事情更加确定，当我卸载模块时它显示“Bad module”。
这是新的erl代码：
%% name of module must match file name
%% Update: info@ph-f.nl
-module(mod_offline_http_post).
-author("dev@codepond.org").
-behaviour(gen_mod).
-export([start/2,
stop/1,
depends/2,
mod_options/1,
mod_opt_type/1,
create_message/1,
create_message/3]).
%% Required by ?INFO_MSG macros
-include("logger.hrl").
-include("scram.hrl").
-include("xmpp.hrl").
start(_Host, _Opt) ->
?INFO_MSG("mod_offline_http_post loading", []),
inets:start(),
?INFO_MSG("HTTP client started", []),
ejabberd_hooks:add(offline_message_hook, _Host, ?MODULE, create_message, 1).
stop (_Host) ->
?INFO_MSG("stopping mod_offline_http_post", []),
ejabberd_hooks:delete(offline_message_hook, _Host, ?MODULE, create_message, 1).
depends(_Host, _Opts) ->
[].
mod_options(_Host) ->
[{auth_token, <<"secret">>},
{post_url, <<"http://example.com/test">>},
{confidential, false}].
mod_opt_type(auth_token) ->
fun iolist_to_binary/1;
mod_opt_type(post_url) ->
fun iolist_to_binary/1;
mod_opt_type(confidential) ->
fun (B) when is_boolean(B) -> B end.
create_message({Action, Packet} = Acc) when (Packet#message.type == chat) and (Packet#message.body /= []) ->
[{text, _, Body}] = Packet#message.body,
post_offline_message(Packet#message.from, Packet#message.to, Body, Packet#message.id),
Acc;
create_message(Acc) ->
Acc.
create_message(_From, _To, Packet) when (Packet#message.type == chat) and (Packet#message.body /= []) ->
Body = fxml:get_path_s(Packet, [{elem, list_to_binary("body")}, cdata]),
MessageId = fxml:get_tag_attr_s(list_to_binary("id"), Packet),
post_offline_message(_From, _To, Body, MessageId),
ok.
post_offline_message(From, To, Body, MessageId) ->
?DEBUG("Posting From ~p To ~p Body ~p ID ~p~n",[From, To, Body, MessageId]),
Token = gen_mod:get_module_opt(To#jid.lserver, ?MODULE, auth_token, fun(S) -> iolist_to_binary(S) end, list_to_binary("")),
PostUrl = gen_mod:get_module_opt(To#jid.lserver, ?MODULE, post_url, fun(S) -> iolist_to_binary(S) end, list_to_binary("")),
ToUser = To#jid.luser,
FromUser = From#jid.luser,
Vhost = To#jid.lserver,
case gen_mod:get_module_opt(To#jid.lserver, ?MODULE, confidential, false) of
true -> Data = string:join(["to=", binary_to_list(ToUser), "&from=", binary_to_list(FromUser), "&vhost=", binary_to_list(Vhost), "&messageId=", binary_to_list(MessageId)], "");
false -> Data = string:join(["to=", binary_to_list(ToUser), "&from=", binary_to_list(FromUser), "&vhost=", binary_to_list(Vhost), "&body=", binary_to_list(Body), "&messageId=", binary_to_list(MessageId)], "")
end,
Request = {binary_to_list(PostUrl), [{"Authorization", binary_to_list(Token)}], "application/x-www-form-urlencoded", Data},
httpc:request(post, Request,[],[]),
?DEBUG("post request sent", []).编辑 2
这是一个非常有前途的案例。该模块被调用。只是它崩溃了，这是另一个非常有趣的案例。这是错误日志：
2020-05-21 11:53:35.897 [error] <0.508.0>@ejabberd_hooks:safe_apply:240 Hook offline_message_hook crashed when running mod_offline_http_post:create_message/1:
** exception error: undefined function gen_mod:get_module_opt/5
in function mod_offline_http_post:post_offline_message/4 (/opt/ejabberd/.ejabberd-modules/sources/mod_offline_http_post/src/mod_offline_http_post.erl, line 63)
in call from mod_offline_http_post:create_message/1 (/opt/ejabberd/.ejabberd-modules/sources/mod_offline_http_post/src/mod_offline_http_post.erl, line 49)
in call from ejabberd_hooks:safe_apply/4 (src/ejabberd_hooks.erl, line 236)
in call from ejabberd_hooks:run_fold1/4 (src/ejabberd_hooks.erl, line 217)
in call from ejabberd_sm:route/1 (src/ejabberd_sm.erl, line 146)
in call from ejabberd_router:do_route/1 (src/ejabberd_router.erl, line 399)
in call from ejabberd_router:route/1 (src/ejabberd_router.erl, line 92)