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Implement certificate auth/sasl external for outgoing connections

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This commit is contained in:
Travis Burtrum 2022-02-17 00:14:40 -05:00
parent 27dbd346c0
commit cff500016d
16 changed files with 750 additions and 90 deletions
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2
Cargo.toml
View File

@ -60,7 +60,7 @@ futures-util = { version = "0.3", default-features = false, features = ["async-a
[features]
default = ["incoming", "outgoing", "quic", "websocket", "logging"]
incoming = ["tokio-rustls", "rustls-pemfile", "rustls"]
outgoing = ["tokio-rustls", "trust-dns-resolver", "rustls-native-certs", "lazy_static", "rustls", "reqwest"]
outgoing = ["tokio-rustls", "trust-dns-resolver", "rustls-native-certs", "lazy_static", "rustls", "reqwest", "rustls-pemfile"]
quic = ["quinn", "rustls-pemfile", "rustls", "rustls-native-certs"]
websocket = ["tokio-tungstenite", "futures-util", "tokio-rustls", "rustls-pemfile", "rustls", "rustls-native-certs"]
logging = ["rand", "env_logger"]

7
contrib/prosody-modules/mod_s2s_outgoing_proxy.lua
View File

@ -28,3 +28,10 @@ module:hook("route/remote", function(event)
return true;
end, -2);
-- is this the best place to do this?
module:hook_tag("http://etherx.jabber.org/streams", "features", function (session, stanza)
if session.type == "s2sout_unauthed" then
module:log("debug", "marking hook session.type '%s' secure!", session.type);
session.secure = true;
end
end, 3000);

21
integration/25-s2s-sasl-external/example.org.zone Normal file
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@ -0,0 +1,21 @@
$TTL 300
; example.org
@ IN SOA ns1.example.org. postmaster.example.org. (
2018111111 ; Serial
28800 ; Refresh
1800 ; Retry
604800 ; Expire - 1 week
86400 ) ; Negative Cache TTL
IN NS ns1
ns1 IN A 192.5.0.10
server1 IN A 192.5.0.20
server2 IN A 192.5.0.30
xp1 IN A 192.5.0.40
xp2 IN A 192.5.0.50
xp3 IN A 192.5.0.60
one IN CNAME xp1
two IN CNAME server2
scansion.one IN CNAME xp3
scansion.two IN CNAME xp3

251
integration/25-s2s-sasl-external/prosody1.cfg.lua Normal file
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@ -0,0 +1,251 @@
--Important for systemd
-- daemonize is important for systemd. if you set this to false the systemd startup will freeze.
daemonize = false
run_as_root = true
pidfile = "/run/prosody/prosody.pid"
plugin_paths = { "/opt/xmpp-proxy/prosody-modules", "/opt/prosody-modules" }
-- Prosody Example Configuration File
--
-- Information on configuring Prosody can be found on our
-- website at https://prosody.im/doc/configure
--
-- Tip: You can check that the syntax of this file is correct
-- when you have finished by running this command:
-- prosodyctl check config
-- If there are any errors, it will let you know what and where
-- they are, otherwise it will keep quiet.
--
-- The only thing left to do is rename this file to remove the .dist ending, and fill in the
-- blanks. Good luck, and happy Jabbering!
---------- Server-wide settings ----------
-- Settings in this section apply to the whole server and are the default settings
-- for any virtual hosts
-- This is a (by default, empty) list of accounts that are admins
-- for the server. Note that you must create the accounts separately
-- (see https://prosody.im/doc/creating_accounts for info)
-- Example: admins = { "user1@example.com", "user2@example.net" }
admins = { }
-- Enable use of libevent for better performance under high load
-- For more information see: https://prosody.im/doc/libevent
--use_libevent = true
-- Prosody will always look in its source directory for modules, but
-- this option allows you to specify additional locations where Prosody
-- will look for modules first. For community modules, see https://modules.prosody.im/
--plugin_paths = {}
-- This is the list of modules Prosody will load on startup.
-- It looks for mod_modulename.lua in the plugins folder, so make sure that exists too.
-- Documentation for bundled modules can be found at: https://prosody.im/doc/modules
modules_enabled = {
-- Generally required
"roster"; -- Allow users to have a roster. Recommended ;)
"saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.
--"tls"; -- Add support for secure TLS on c2s/s2s connections
--"dialback"; -- s2s dialback support
"disco"; -- Service discovery
-- Not essential, but recommended
"carbons"; -- Keep multiple clients in sync
"pep"; -- Enables users to publish their avatar, mood, activity, playing music and more
"private"; -- Private XML storage (for room bookmarks, etc.)
"blocklist"; -- Allow users to block communications with other users
"vcard4"; -- User profiles (stored in PEP)
"vcard_legacy"; -- Conversion between legacy vCard and PEP Avatar, vcard
"limits"; -- Enable bandwidth limiting for XMPP connections
-- Nice to have
"version"; -- Replies to server version requests
"uptime"; -- Report how long server has been running
"time"; -- Let others know the time here on this server
"ping"; -- Replies to XMPP pings with pongs
"register"; -- Allow users to register on this server using a client and change passwords
--"mam"; -- Store messages in an archive and allow users to access it
--"csi_simple"; -- Simple Mobile optimizations
-- Admin interfaces
"admin_adhoc"; -- Allows administration via an XMPP client that supports ad-hoc commands
--"admin_telnet"; -- Opens telnet console interface on localhost port 5582
-- HTTP modules
--"bosh"; -- Enable BOSH clients, aka "Jabber over HTTP"
--"websocket"; -- XMPP over WebSockets
--"http_files"; -- Serve static files from a directory over HTTP
-- Other specific functionality
--"groups"; -- Shared roster support
--"server_contact_info"; -- Publish contact information for this service
--"announce"; -- Send announcement to all online users
--"welcome"; -- Welcome users who register accounts
--"watchregistrations"; -- Alert admins of registrations
--"motd"; -- Send a message to users when they log in
--"legacyauth"; -- Legacy authentication. Only used by some old clients and bots.
--"proxy65"; -- Enables a file transfer proxy service which clients behind NAT can use
"net_proxy";
"s2s_outgoing_proxy";
}
-- These modules are auto-loaded, but should you want
-- to disable them then uncomment them here:
modules_disabled = {
-- "offline"; -- Store offline messages
-- "c2s"; -- Handle client connections
-- "s2s"; -- Handle server-to-server connections
-- "posix"; -- POSIX functionality, sends server to background, enables syslog, etc.
}
-- Disable account creation by default, for security
-- For more information see https://prosody.im/doc/creating_accounts
allow_registration = false
-- we don't need prosody doing any encryption, xmpp-proxy does this now
-- these are likely set to true somewhere in your file, find them, make them false
-- you can also remove all certificates from your config
s2s_require_encryption = false
s2s_secure_auth = false
-- xmpp-proxy outgoing is listening on this port, make all outgoing s2s connections directly to here
s2s_outgoing_proxy = { "192.5.0.40", 15270 }
-- handle PROXY protocol on these ports
proxy_port_mappings = {
[15222] = "c2s",
[15269] = "s2s"
}
--[[
Specifies a list of trusted hosts or networks which may use the PROXY protocol
If not specified, it will default to: 127.0.0.1, ::1 (local connections only)
An empty table ({}) can be configured to allow connections from any source.
Please read the module documentation about potential security impact.
]]--
proxy_trusted_proxies = {
"192.5.0.40"
}
-- don't listen on any normal c2s/s2s ports (xmpp-proxy listens on these now)
-- you might need to comment these out further down in your config file if you set them
c2s_ports = {}
legacy_ssl_ports = {}
-- you MUST have at least one s2s_ports defined if you want outgoing S2S to work, don't ask..
s2s_ports = {15268}
-- Force clients to use encrypted connections? This option will
-- prevent clients from authenticating unless they are using encryption.
c2s_require_encryption = false
allow_unencrypted_plain_auth = true
-- Some servers have invalid or self-signed certificates. You can list
-- remote domains here that will not be required to authenticate using
-- certificates. They will be authenticated using DNS instead, even
-- when s2s_secure_auth is enabled.
--s2s_insecure_domains = { "insecure.example" }
-- Even if you disable s2s_secure_auth, you can still require valid
-- certificates for some domains by specifying a list here.
--s2s_secure_domains = { "jabber.org" }
-- Enable rate limits for incoming client and server connections
limits = {
c2s = {
rate = "10kb/s";
};
s2sin = {
rate = "30kb/s";
};
}
-- Select the authentication backend to use. The 'internal' providers
-- use Prosody's configured data storage to store the authentication data.
authentication = "internal_hashed"
-- Select the storage backend to use. By default Prosody uses flat files
-- in its configured data directory, but it also supports more backends
-- through modules. An "sql" backend is included by default, but requires
-- additional dependencies. See https://prosody.im/doc/storage for more info.
--storage = "sql" -- Default is "internal"
-- For the "sql" backend, you can uncomment *one* of the below to configure:
--sql = { driver = "SQLite3", database = "prosody.sqlite" } -- Default. 'database' is the filename.
--sql = { driver = "MySQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }
--sql = { driver = "PostgreSQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }
-- Archiving configuration
-- If mod_mam is enabled, Prosody will store a copy of every message. This
-- is used to synchronize conversations between multiple clients, even if
-- they are offline. This setting controls how long Prosody will keep
-- messages in the archive before removing them.
archive_expires_after = "1w" -- Remove archived messages after 1 week
-- You can also configure messages to be stored in-memory only. For more
-- archiving options, see https://prosody.im/doc/modules/mod_mam
-- Logging configuration
-- For advanced logging see https://prosody.im/doc/logging
log = {
-- info = "prosody.log"; -- Change 'info' to 'debug' for verbose logging
-- error = "prosody.err";
--info = "*syslog"; -- Uncomment this for logging to syslog
debug = "*console"; -- Log to the console, useful for debugging with daemonize=false
}
-- Uncomment to enable statistics
-- For more info see https://prosody.im/doc/statistics
-- statistics = "internal"
-- Certificates
-- Every virtual host and component needs a certificate so that clients and
-- servers can securely verify its identity. Prosody will automatically load
-- certificates/keys from the directory specified here.
-- For more information, including how to use 'prosodyctl' to auto-import certificates
-- (from e.g. Let's Encrypt) see https://prosody.im/doc/certificates
-- Location of directory to find certificates in (relative to main config file):
certificates = "certs"
-- HTTPS currently only supports a single certificate, specify it here:
--https_certificate = "/etc/prosody/certs/localhost.crt"
----------- Virtual hosts -----------
-- You need to add a VirtualHost entry for each domain you wish Prosody to serve.
-- Settings under each VirtualHost entry apply *only* to that host.
VirtualHost "one.example.org"
--VirtualHost "example.com"
-- certificate = "/path/to/example.crt"
------ Components ------
-- You can specify components to add hosts that provide special services,
-- like multi-user conferences, and transports.
-- For more information on components, see https://prosody.im/doc/components
---Set up a MUC (multi-user chat) room server on conference.example.com:
--Component "conference.example.com" "muc"
--- Store MUC messages in an archive and allow users to access it
--modules_enabled = { "muc_mam" }
---Set up an external component (default component port is 5347)
--
-- External components allow adding various services, such as gateways/
-- transports to other networks like ICQ, MSN and Yahoo. For more info
-- see: https://prosody.im/doc/components#adding_an_external_component
--
--Component "gateway.example.com"
-- component_secret = "password"

223
integration/25-s2s-sasl-external/prosody2.cfg.lua Normal file
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@ -0,0 +1,223 @@
--Important for systemd
-- daemonize is important for systemd. if you set this to false the systemd startup will freeze.
daemonize = false
run_as_root = true
pidfile = "/run/prosody/prosody.pid"
-- Prosody Example Configuration File
--
-- Information on configuring Prosody can be found on our
-- website at https://prosody.im/doc/configure
--
-- Tip: You can check that the syntax of this file is correct
-- when you have finished by running this command:
-- prosodyctl check config
-- If there are any errors, it will let you know what and where
-- they are, otherwise it will keep quiet.
--
-- The only thing left to do is rename this file to remove the .dist ending, and fill in the
-- blanks. Good luck, and happy Jabbering!
---------- Server-wide settings ----------
-- Settings in this section apply to the whole server and are the default settings
-- for any virtual hosts
-- This is a (by default, empty) list of accounts that are admins
-- for the server. Note that you must create the accounts separately
-- (see https://prosody.im/doc/creating_accounts for info)
-- Example: admins = { "user1@example.com", "user2@example.net" }
admins = { }
-- Enable use of libevent for better performance under high load
-- For more information see: https://prosody.im/doc/libevent
--use_libevent = true
-- Prosody will always look in its source directory for modules, but
-- this option allows you to specify additional locations where Prosody
-- will look for modules first. For community modules, see https://modules.prosody.im/
--plugin_paths = {}
-- This is the list of modules Prosody will load on startup.
-- It looks for mod_modulename.lua in the plugins folder, so make sure that exists too.
-- Documentation for bundled modules can be found at: https://prosody.im/doc/modules
modules_enabled = {
-- Generally required
"roster"; -- Allow users to have a roster. Recommended ;)
"saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.
"tls"; -- Add support for secure TLS on c2s/s2s connections
-- "dialback"; -- s2s dialback support
"disco"; -- Service discovery
-- Not essential, but recommended
"carbons"; -- Keep multiple clients in sync
"pep"; -- Enables users to publish their avatar, mood, activity, playing music and more
"private"; -- Private XML storage (for room bookmarks, etc.)
"blocklist"; -- Allow users to block communications with other users
"vcard4"; -- User profiles (stored in PEP)
"vcard_legacy"; -- Conversion between legacy vCard and PEP Avatar, vcard
"limits"; -- Enable bandwidth limiting for XMPP connections
-- Nice to have
"version"; -- Replies to server version requests
"uptime"; -- Report how long server has been running
"time"; -- Let others know the time here on this server
"ping"; -- Replies to XMPP pings with pongs
"register"; -- Allow users to register on this server using a client and change passwords
--"mam"; -- Store messages in an archive and allow users to access it
--"csi_simple"; -- Simple Mobile optimizations
-- Admin interfaces
"admin_adhoc"; -- Allows administration via an XMPP client that supports ad-hoc commands
--"admin_telnet"; -- Opens telnet console interface on localhost port 5582
-- HTTP modules
--"bosh"; -- Enable BOSH clients, aka "Jabber over HTTP"
--"websocket"; -- XMPP over WebSockets
--"http_files"; -- Serve static files from a directory over HTTP
-- Other specific functionality
--"groups"; -- Shared roster support
--"server_contact_info"; -- Publish contact information for this service
--"announce"; -- Send announcement to all online users
--"welcome"; -- Welcome users who register accounts
--"watchregistrations"; -- Alert admins of registrations
--"motd"; -- Send a message to users when they log in
--"legacyauth"; -- Legacy authentication. Only used by some old clients and bots.
--"proxy65"; -- Enables a file transfer proxy service which clients behind NAT can use
}
-- These modules are auto-loaded, but should you want
-- to disable them then uncomment them here:
modules_disabled = {
-- "offline"; -- Store offline messages
-- "c2s"; -- Handle client connections
-- "s2s"; -- Handle server-to-server connections
-- "posix"; -- POSIX functionality, sends server to background, enables syslog, etc.
}
-- Disable account creation by default, for security
-- For more information see https://prosody.im/doc/creating_accounts
allow_registration = false
-- Force clients to use encrypted connections? This option will
-- prevent clients from authenticating unless they are using encryption.
c2s_require_encryption = true
-- Force servers to use encrypted connections? This option will
-- prevent servers from authenticating unless they are using encryption.
s2s_require_encryption = true
-- Force certificate authentication for server-to-server connections?
s2s_secure_auth = false
-- Some servers have invalid or self-signed certificates. You can list
-- remote domains here that will not be required to authenticate using
-- certificates. They will be authenticated using DNS instead, even
-- when s2s_secure_auth is enabled.
--s2s_insecure_domains = { "insecure.example" }
-- Even if you disable s2s_secure_auth, you can still require valid
-- certificates for some domains by specifying a list here.
--s2s_secure_domains = { "jabber.org" }
-- Enable rate limits for incoming client and server connections
limits = {
c2s = {
rate = "10kb/s";
};
s2sin = {
rate = "30kb/s";
};
}
-- Select the authentication backend to use. The 'internal' providers
-- use Prosody's configured data storage to store the authentication data.
authentication = "internal_hashed"
-- Select the storage backend to use. By default Prosody uses flat files
-- in its configured data directory, but it also supports more backends
-- through modules. An "sql" backend is included by default, but requires
-- additional dependencies. See https://prosody.im/doc/storage for more info.
--storage = "sql" -- Default is "internal"
-- For the "sql" backend, you can uncomment *one* of the below to configure:
--sql = { driver = "SQLite3", database = "prosody.sqlite" } -- Default. 'database' is the filename.
--sql = { driver = "MySQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }
--sql = { driver = "PostgreSQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }
-- Archiving configuration
-- If mod_mam is enabled, Prosody will store a copy of every message. This
-- is used to synchronize conversations between multiple clients, even if
-- they are offline. This setting controls how long Prosody will keep
-- messages in the archive before removing them.
archive_expires_after = "1w" -- Remove archived messages after 1 week
-- You can also configure messages to be stored in-memory only. For more
-- archiving options, see https://prosody.im/doc/modules/mod_mam
-- Logging configuration
-- For advanced logging see https://prosody.im/doc/logging
log = {
-- info = "prosody.log"; -- Change 'info' to 'debug' for verbose logging
-- error = "prosody.err";
--info = "*syslog"; -- Uncomment this for logging to syslog
debug = "*console"; -- Log to the console, useful for debugging with daemonize=false
}
-- Uncomment to enable statistics
-- For more info see https://prosody.im/doc/statistics
-- statistics = "internal"
-- Certificates
-- Every virtual host and component needs a certificate so that clients and
-- servers can securely verify its identity. Prosody will automatically load
-- certificates/keys from the directory specified here.
-- For more information, including how to use 'prosodyctl' to auto-import certificates
-- (from e.g. Let's Encrypt) see https://prosody.im/doc/certificates
-- Location of directory to find certificates in (relative to main config file):
certificates = "certs"
-- HTTPS currently only supports a single certificate, specify it here:
--https_certificate = "/etc/prosody/certs/localhost.crt"
----------- Virtual hosts -----------
-- You need to add a VirtualHost entry for each domain you wish Prosody to serve.
-- Settings under each VirtualHost entry apply *only* to that host.
VirtualHost "two.example.org"
--VirtualHost "example.com"
-- certificate = "/path/to/example.crt"
------ Components ------
-- You can specify components to add hosts that provide special services,
-- like multi-user conferences, and transports.
-- For more information on components, see https://prosody.im/doc/components
---Set up a MUC (multi-user chat) room server on conference.example.com:
--Component "conference.example.com" "muc"
--- Store MUC messages in an archive and allow users to access it
--modules_enabled = { "muc_mam" }
---Set up an external component (default component port is 5347)
--
-- External components allow adding various services, such as gateways/
-- transports to other networks like ICQ, MSN and Yahoo. For more info
-- see: https://prosody.im/doc/components#adding_an_external_component
--
--Component "gateway.example.com"
-- component_secret = "password"

1
integration/25-s2s-sasl-external/tests Normal file
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@ -0,0 +1 @@
juliet_presence.scs romeo_messages_juliet.scs romeo_presence.scs

44
integration/25-s2s-sasl-external/xmpp-proxy1.toml Normal file
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@ -0,0 +1,44 @@
# interfaces to listen for reverse proxy STARTTLS/Direct TLS XMPP connections on, should be open to the internet
incoming_listen = [ "0.0.0.0:5222", "0.0.0.0:5269" ]
# interfaces to listen for reverse proxy QUIC XMPP connections on, should be open to the internet
quic_listen = [ ]
# interfaces to listen for reverse proxy TLS WebSocket (wss) XMPP connections on, should be open to the internet
websocket_listen = [ ]
# interfaces to listen for outgoing proxy TCP XMPP connections on, should be localhost
outgoing_listen = [ "0.0.0.0:15270" ]
# these ports shouldn't do any TLS, but should assume any connection from xmpp-proxy is secure
# prosody module: https://modules.prosody.im/mod_secure_interfaces.html
# c2s port backend XMPP server listens on
c2s_target = "192.5.0.20:15222"
# s2s port backend XMPP server listens on
s2s_target = "192.5.0.20:15269"
# send PROXYv1 header to backend XMPP server
# https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
# prosody module: https://modules.prosody.im/mod_net_proxy.html
# ejabberd config: https://docs.ejabberd.im/admin/configuration/listen-options/#use-proxy-protocol
proxy = true
# limit incoming stanzas to this many bytes, default to ejabberd's default
# https://github.com/processone/ejabberd/blob/master/ejabberd.yml.example#L32
# xmpp-proxy will use this many bytes + 16k per connection
max_stanza_size_bytes = 262_144
# TLS key/certificate valid for all your XMPP domains, PEM format
# included systemd unit can only read files from /etc/xmpp-proxy/ so put them in there
tls_key = "/etc/prosody/certs/one.example.org.key"
tls_cert = "/etc/prosody/certs/one.example.org.crt"
# configure logging, defaults are commented
# can also set env variables XMPP_PROXY_LOG_LEVEL and/or XMPP_PROXY_LOG_STYLE, but values in this file override them
# many options, trace is XML-console-level, refer to: https://docs.rs/env_logger/0.8.3/env_logger/#enabling-logging
#log_level = "info"
# for development/debugging:
log_level = "info,xmpp_proxy=trace"
# one of auto, always, never, refer to: https://docs.rs/env_logger/0.8.3/env_logger/#disabling-colors
#log_style = "never"

44
integration/25-s2s-sasl-external/xmpp-proxy3.toml Normal file
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@ -0,0 +1,44 @@
# interfaces to listen for reverse proxy STARTTLS/Direct TLS XMPP connections on, should be open to the internet
incoming_listen = [ ]
# interfaces to listen for reverse proxy QUIC XMPP connections on, should be open to the internet
quic_listen = [ ]
# interfaces to listen for reverse proxy TLS WebSocket (wss) XMPP connections on, should be open to the internet
websocket_listen = [ ]
# interfaces to listen for outgoing proxy TCP XMPP connections on, should be localhost
outgoing_listen = [ "0.0.0.0:5222" ]
# these ports shouldn't do any TLS, but should assume any connection from xmpp-proxy is secure
# prosody module: https://modules.prosody.im/mod_secure_interfaces.html
# c2s port backend XMPP server listens on
c2s_target = "127.0.0.1:15222"
# s2s port backend XMPP server listens on
s2s_target = "127.0.0.1:15269"
# send PROXYv1 header to backend XMPP server
# https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
# prosody module: https://modules.prosody.im/mod_net_proxy.html
# ejabberd config: https://docs.ejabberd.im/admin/configuration/listen-options/#use-proxy-protocol
proxy = true
# limit incoming stanzas to this many bytes, default to ejabberd's default
# https://github.com/processone/ejabberd/blob/master/ejabberd.yml.example#L32
# xmpp-proxy will use this many bytes + 16k per connection
max_stanza_size_bytes = 262_144
# TLS key/certificate valid for all your XMPP domains, PEM format
# included systemd unit can only read files from /etc/xmpp-proxy/ so put them in there
tls_key = "/etc/certs/rsa/one.example.org.key"
tls_cert = "/etc/certs/rsa/one.example.org.crt"
# configure logging, defaults are commented
# can also set env variables XMPP_PROXY_LOG_LEVEL and/or XMPP_PROXY_LOG_STYLE, but values in this file override them
# many options, trace is XML-console-level, refer to: https://docs.rs/env_logger/0.8.3/env_logger/#enabling-logging
#log_level = "info"
# for development/debugging:
log_level = "info,xmpp_proxy=trace"
# one of auto, always, never, refer to: https://docs.rs/env_logger/0.8.3/env_logger/#disabling-colors
#log_style = "never"

2
integration/Dockerfile
View File

@ -63,7 +63,7 @@ COPY --from=build /usr/bin/true /build/target/release/xmpp-prox[y] /usr/bin/
COPY ./integration/named.conf /etc/
COPY ./integration/00-no-tls/example.org.zone /var/named/
COPY ./integration/00-no-tls/prosody1.cfg.lua /etc/prosody/prosody.cfg.lua
COPY ./contrib/prosody-modules /usr/lib/prosody/modules
COPY ./contrib/prosody-modules /opt/xmpp-proxy/prosody-modules
COPY ./integration/*.scs /scansion/
ARG ECDSA=0

8
integration/test.sh
View File

@ -61,9 +61,9 @@ run_container() {
args+=("-d")
shift
fi
while [ "$1" == "-v" ]
while [ "$1" == "-v" -o "$1" == "-w" ]
do
args+=("-v")
args+=("$1")
shift
args+=("$1")
shift
@ -116,9 +116,9 @@ run_test() {
set -e
# run the actual tests
run_container 90 scansion scansion -d /scansion/
tests="$(cat tests || echo "-d .")"
run_container -w /scansion/ 90 scansion scansion $tests
# juliet_messages_romeo.scs juliet_presence.scs romeo_messages_juliet.scs romeo_presence.scs
#run_container 90 scansion scansion /scansion/juliet_presence.scs /scansion/romeo_presence.scs
cleanup
)

107
src/main.rs
View File

@ -18,11 +18,11 @@ use tokio::net::TcpListener;
use tokio::task::JoinHandle;
#[cfg(feature = "rustls")]
use rustls::{Certificate, PrivateKey, ServerConfig};
use rustls::{Certificate, ClientConfig, PrivateKey, ServerConfig};
#[cfg(feature = "rustls-pemfile")]
use rustls_pemfile::{certs, pkcs8_private_keys};
#[cfg(feature = "tokio-rustls")]
use tokio_rustls::TlsAcceptor;
use tokio_rustls::{TlsAcceptor, TlsConnector};
use anyhow::{bail, Result};
@ -129,8 +129,51 @@ impl Config {
}
}
#[cfg(all(feature = "rustls-pemfile", feature = "rustls"))]
fn server_config(&self) -> Result<ServerConfig> {
#[cfg(feature = "outgoing")]
fn get_outgoing_cfg(&self) -> OutgoingConfig {
let c2s_config = ClientConfig::builder().with_safe_defaults().with_root_certificates(root_cert_store()).with_no_client_auth();
let s2s_config = match self.certs_key().and_then(|(tls_certs, tls_key)| {
Ok(ClientConfig::builder()
.with_safe_defaults()
.with_root_certificates(root_cert_store())
.with_single_cert(tls_certs, tls_key)?)
}) {
Ok(s) => s,
Err(e) => {
debug!("invalid key/cert for s2s client auth: {}", e);
c2s_config.clone()
}
};
// uncomment to disable cert auth/sasl external
//let s2s_config = c2s_config.clone();
let mut c2s_config_alpn = c2s_config.clone();
let mut s2s_config_alpn = s2s_config.clone();
c2s_config_alpn.alpn_protocols.push(ALPN_XMPP_CLIENT.to_vec());
s2s_config_alpn.alpn_protocols.push(ALPN_XMPP_SERVER.to_vec());
let c2s_config_alpn = Arc::new(c2s_config_alpn);
let s2s_config_alpn = Arc::new(s2s_config_alpn);
let c2s_connector_alpn: TlsConnector = c2s_config_alpn.clone().into();
let s2s_connector_alpn: TlsConnector = s2s_config_alpn.clone().into();
let c2s_connector: TlsConnector = Arc::new(c2s_config).into();
let s2s_connector: TlsConnector = Arc::new(s2s_config).into();
OutgoingConfig {
max_stanza_size_bytes: self.max_stanza_size_bytes,
c2s_config_alpn,
s2s_config_alpn,
c2s_connector_alpn,
s2s_connector_alpn,
c2s_connector,
s2s_connector,
}
}
#[cfg(any(feature = "outgoing", feature = "incoming"))]
fn certs_key(&self) -> Result<(Vec<Certificate>, PrivateKey)> {
let mut tls_key: Vec<PrivateKey> = pkcs8_private_keys(&mut BufReader::new(File::open(&self.tls_key)?))
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid key"))
.map(|mut keys| keys.drain(..).map(PrivateKey).collect())?;
@ -143,17 +186,66 @@ impl Config {
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid cert"))
.map(|mut certs| certs.drain(..).map(Certificate).collect())?;
Ok((tls_certs, tls_key))
}
#[cfg(feature = "incoming")]
fn server_config(&self) -> Result<ServerConfig> {
let (tls_certs, tls_key) = self.certs_key()?;
// todo: request client auth here
let config = ServerConfig::builder().with_safe_defaults().with_no_client_auth().with_single_cert(tls_certs, tls_key)?;
Ok(config)
}
#[cfg(all(feature = "tokio-rustls", feature = "rustls-pemfile", feature = "rustls"))]
#[cfg(feature = "incoming")]
fn tls_acceptor(&self) -> Result<TlsAcceptor> {
Ok(TlsAcceptor::from(Arc::new(self.server_config()?)))
}
}
#[derive(Clone)]
#[cfg(feature = "outgoing")]
pub struct OutgoingConfig {
max_stanza_size_bytes: usize,
c2s_config_alpn: Arc<ClientConfig>,
s2s_config_alpn: Arc<ClientConfig>,
c2s_connector_alpn: TlsConnector,
s2s_connector_alpn: TlsConnector,
c2s_connector: TlsConnector,
s2s_connector: TlsConnector,
}
#[cfg(feature = "outgoing")]
impl OutgoingConfig {
pub fn client_cfg_alpn(&self, is_c2s: bool) -> Arc<ClientConfig> {
if is_c2s {
self.c2s_config_alpn.clone()
} else {
self.s2s_config_alpn.clone()
}
}
pub fn connector_alpn(&self, is_c2s: bool) -> TlsConnector {
if is_c2s {
self.c2s_connector_alpn.clone()
} else {
self.s2s_connector_alpn.clone()
}
}
pub fn connector(&self, is_c2s: bool) -> TlsConnector {
if is_c2s {
self.c2s_connector.clone()
} else {
self.s2s_connector.clone()
}
}
}
async fn shuffle_rd_wr(in_rd: StanzaRead, in_wr: StanzaWrite, config: CloneableConfig, local_addr: SocketAddr, client_addr: &mut Context<'_>) -> Result<()> {
let filter = StanzaFilter::new(config.max_stanza_size_bytes);
shuffle_rd_wr_filter(in_rd, in_wr, config, local_addr, client_addr, filter).await
@ -318,7 +410,7 @@ async fn main() {
handles.push(spawn_tls_listener(listener.parse().die("invalid listener address"), config.clone(), acceptor.clone()));
}
}
#[cfg(feature = "quic")]
#[cfg(all(feature = "quic", feature = "incoming"))]
if let Some(ref listeners) = main_config.quic_listen {
let quic_config = main_config.quic_server_config().die("invalid cert/key ?");
for listener in listeners {
@ -327,8 +419,9 @@ async fn main() {
}
#[cfg(feature = "outgoing")]
if let Some(ref listeners) = main_config.outgoing_listen {
let outgoing_cfg = main_config.get_outgoing_cfg();
for listener in listeners {
handles.push(spawn_outgoing_listener(listener.parse().die("invalid listener address"), config.max_stanza_size_bytes));
handles.push(spawn_outgoing_listener(listener.parse().die("invalid listener address"), outgoing_cfg.clone()));
}
}
info!("xmpp-proxy started");

12
src/outgoing.rs
View File

@ -1,9 +1,9 @@
use crate::*;
async fn handle_outgoing_connection(stream: tokio::net::TcpStream, client_addr: &mut Context<'_>, max_stanza_size_bytes: usize) -> Result<()> {
async fn handle_outgoing_connection(stream: tokio::net::TcpStream, client_addr: &mut Context<'_>, config: OutgoingConfig) -> Result<()> {
info!("{} connected", client_addr.log_from());
let mut in_filter = StanzaFilter::new(max_stanza_size_bytes);
let mut in_filter = StanzaFilter::new(config.max_stanza_size_bytes);
let (in_rd, in_wr) = tokio::io::split(stream);
@ -17,7 +17,8 @@ async fn handle_outgoing_connection(stream: tokio::net::TcpStream, client_addr:
// we require a valid to= here or we fail
let to = std::str::from_utf8(stream_open.extract_between(b" to='", b"'").or_else(|_| stream_open.extract_between(b" to=\"", b"\""))?)?;
let (out_wr, out_rd, stream_open) = srv_connect(to, is_c2s, &stream_open, &mut in_filter, client_addr).await?;
let max_stanza_size_bytes = config.max_stanza_size_bytes;
let (out_wr, out_rd, stream_open) = srv_connect(to, is_c2s, &stream_open, &mut in_filter, client_addr, config).await?;
// send server response to client
in_wr.write_all(is_c2s, &stream_open, 0, client_addr.log_from()).await?;
in_wr.flush().await?;
@ -26,14 +27,15 @@ async fn handle_outgoing_connection(stream: tokio::net::TcpStream, client_addr:
shuffle_rd_wr_filter_only(in_rd, in_wr, out_rd, out_wr, is_c2s, max_stanza_size_bytes, client_addr, in_filter).await
}
pub fn spawn_outgoing_listener(local_addr: SocketAddr, max_stanza_size_bytes: usize) -> JoinHandle<Result<()>> {
pub fn spawn_outgoing_listener(local_addr: SocketAddr, config: OutgoingConfig) -> JoinHandle<Result<()>> {
tokio::spawn(async move {
let listener = TcpListener::bind(&local_addr).await.die("cannot listen on port/interface");
loop {
let (stream, client_addr) = listener.accept().await?;
let config = config.clone();
tokio::spawn(async move {
let mut client_addr = Context::new("unk-out", client_addr);
if let Err(e) = handle_outgoing_connection(stream, &mut client_addr, max_stanza_size_bytes).await {
if let Err(e) = handle_outgoing_connection(stream, &mut client_addr, config).await {
error!("{} {}", client_addr.log_from(), e);
}
});

10
src/quic.rs
View File

@ -1,19 +1,18 @@
use crate::*;
use futures::StreamExt;
use quinn::{ServerConfig, TransportConfig};
use rustls::client::ClientConfig;
use std::{net::SocketAddr, sync::Arc};
use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
use anyhow::Result;
pub async fn quic_connect(target: SocketAddr, server_name: &str, is_c2s: bool) -> Result<(StanzaWrite, StanzaRead)> {
#[cfg(feature = "outgoing")]
pub async fn quic_connect(target: SocketAddr, server_name: &str, is_c2s: bool, config: OutgoingConfig) -> Result<(StanzaWrite, StanzaRead)> {
let bind_addr = "0.0.0.0:0".parse().unwrap();
let mut client_cfg = ClientConfig::builder().with_safe_defaults().with_root_certificates(root_cert_store()).with_no_client_auth(); // todo: for s2s do client auth
client_cfg.alpn_protocols.push(if is_c2s { ALPN_XMPP_CLIENT } else { ALPN_XMPP_SERVER }.to_vec());
let client_cfg = config.client_cfg_alpn(is_c2s);
let mut endpoint = quinn::Endpoint::client(bind_addr)?;
endpoint.set_default_client_config(quinn::ClientConfig::new(Arc::new(client_cfg)));
endpoint.set_default_client_config(quinn::ClientConfig::new(client_cfg));
// connect to server
let quinn::NewConnection { connection, .. } = endpoint.connect(target, server_name)?.await?;
@ -24,6 +23,7 @@ pub async fn quic_connect(target: SocketAddr, server_name: &str, is_c2s: bool) -
}
impl Config {
#[cfg(feature = "incoming")]
pub fn quic_server_config(&self) -> Result<ServerConfig> {
let transport_config = TransportConfig::default();
// todo: configure transport_config here if needed

34
src/srv.rs
View File

@ -51,6 +51,7 @@ impl XmppConnection {
stream_open: &[u8],
in_filter: &mut crate::StanzaFilter,
client_addr: &mut Context<'_>,
config: OutgoingConfig,
) -> Result<(StanzaWrite, StanzaRead, SocketAddr, &'static str)> {
debug!("{} attempting connection to SRV: {:?}", client_addr.log_from(), self);
// todo: need to set options to Ipv4AndIpv6
@ -60,25 +61,27 @@ impl XmppConnection {
debug!("{} trying ip {}", client_addr.log_from(), to_addr);
// todo: for DNSSEC we need to optionally allow target in addition to domain, but what for SNI
match self.conn_type {
XmppConnectionType::StartTLS => match crate::starttls_connect(to_addr, domain, is_c2s, stream_open, in_filter).await {
XmppConnectionType::StartTLS => match crate::starttls_connect(to_addr, domain, is_c2s, stream_open, in_filter, config.clone()).await {
Ok((wr, rd)) => return Ok((wr, rd, to_addr, "starttls-out")),
Err(e) => error!("starttls connection failed to IP {} from SRV {}, error: {}", to_addr, self.target, e),
},
XmppConnectionType::DirectTLS => match crate::tls_connect(to_addr, domain, is_c2s).await {
XmppConnectionType::DirectTLS => match crate::tls_connect(to_addr, domain, is_c2s, config.clone()).await {
Ok((wr, rd)) => return Ok((wr, rd, to_addr, "directtls-out")),
Err(e) => error!("direct tls connection failed to IP {} from SRV {}, error: {}", to_addr, self.target, e),
},
#[cfg(feature = "quic")]
XmppConnectionType::QUIC => match crate::quic_connect(to_addr, domain, is_c2s).await {
XmppConnectionType::QUIC => match crate::quic_connect(to_addr, domain, is_c2s, config.clone()).await {
Ok((wr, rd)) => return Ok((wr, rd, to_addr, "quic-out")),
Err(e) => error!("quic connection failed to IP {} from SRV {}, error: {}", to_addr, self.target, e),
},
#[cfg(feature = "websocket")]
// todo: when websocket is found via DNS, we need to validate cert against domain, *not* target, this is a security problem with XEP-0156, we are doing it the secure but likely unexpected way here for now
XmppConnectionType::WebSocket(ref url, ref origin, ref secure) => match crate::websocket_connect(to_addr, if *secure { &self.target } else { domain }, url, origin, is_c2s).await {
Ok((wr, rd)) => return Ok((wr, rd, to_addr, "websocket-out")),
Err(e) => error!("websocket connection failed to IP {} from TXT {}, error: {}", to_addr, url, e),
},
XmppConnectionType::WebSocket(ref url, ref origin, ref secure) => {
match crate::websocket_connect(to_addr, if *secure { &self.target } else { domain }, url, origin, is_c2s, config.clone()).await {
Ok((wr, rd)) => return Ok((wr, rd, to_addr, "websocket-out")),
Err(e) => error!("websocket connection failed to IP {} from TXT {}, error: {}", to_addr, url, e),
}
}
}
}
bail!("cannot connect to any IPs for SRV: {}", self.target)
@ -117,7 +120,7 @@ fn wss_to_srv(url: &str, secure: bool) -> Option<XmppConnection> {
return None;
}
};
let target = server_name.clone().to_string();
let target = server_name.to_string();
let mut origin = "https://".to_string();
origin.push_str(&server_name);
@ -274,9 +277,16 @@ pub async fn get_xmpp_connections(domain: &str, is_c2s: bool) -> Result<Vec<Xmpp
Ok(ret)
}
pub async fn srv_connect(domain: &str, is_c2s: bool, stream_open: &[u8], in_filter: &mut crate::StanzaFilter, client_addr: &mut Context<'_>) -> Result<(StanzaWrite, StanzaRead, Vec<u8>)> {
pub async fn srv_connect(
domain: &str,
is_c2s: bool,
stream_open: &[u8],
in_filter: &mut crate::StanzaFilter,
client_addr: &mut Context<'_>,
config: OutgoingConfig,
) -> Result<(StanzaWrite, StanzaRead, Vec<u8>)> {
for srv in get_xmpp_connections(domain, is_c2s).await? {
let connect = srv.connect(domain, is_c2s, stream_open, in_filter, client_addr).await;
let connect = srv.connect(domain, is_c2s, stream_open, in_filter, client_addr, config.clone()).await;
if connect.is_err() {
continue;
}
@ -338,12 +348,12 @@ async fn collect_host_meta_json(domain: &str, rel: &str) -> Result<Vec<String>>
#[cfg(feature = "websocket")]
async fn parse_host_meta(rel: &str, bytes: &[u8]) -> Result<Vec<String>> {
let mut vec = Vec::new();
let mut stanza_reader = StanzaReader(bytes.as_ref());
let mut stanza_reader = StanzaReader(bytes);
let mut filter = StanzaFilter::new(8192);
while let Some((stanza, eoft)) = stanza_reader.next_eoft(&mut filter).await? {
if stanza.starts_with(b"<XRD") || stanza.starts_with(b"<xrd") {
// now we are to the Links
let stanza = (&stanza[eoft..]).clone();
let stanza = &stanza[eoft..];
let mut stanza_reader = StanzaReader(stanza);
let mut filter = StanzaFilter::new(4096);
while let Ok(Some(stanza)) = stanza_reader.next(&mut filter).await {

41
src/tls.rs
View File

@ -3,46 +3,19 @@ use std::convert::TryFrom;
use tokio::io::{AsyncBufReadExt, BufStream};
#[cfg(any(feature = "incoming", feature = "outgoing"))]
use tokio_rustls::{
rustls::{client::ClientConfig, ServerName},
TlsConnector,
};
use tokio_rustls::rustls::ServerName;
#[cfg(feature = "outgoing")]
lazy_static::lazy_static! {
static ref CLIENT_TLS_CONFIG: TlsConnector = {
let mut config = ClientConfig::builder()
.with_safe_defaults()
.with_root_certificates(root_cert_store())
.with_no_client_auth();
config.alpn_protocols.push(ALPN_XMPP_CLIENT.to_vec());
TlsConnector::from(Arc::new(config))
};
static ref SERVER_TLS_CONFIG: TlsConnector = {
let mut config = ClientConfig::builder()
.with_safe_defaults()
.with_root_certificates(root_cert_store())
.with_no_client_auth(); // todo: do client auth...
config.alpn_protocols.push(ALPN_XMPP_SERVER.to_vec());
TlsConnector::from(Arc::new(config))
};
}
#[cfg(feature = "outgoing")]
pub async fn tls_connect(target: SocketAddr, server_name: &str, is_c2s: bool) -> Result<(StanzaWrite, StanzaRead)> {
pub async fn tls_connect(target: SocketAddr, server_name: &str, is_c2s: bool, config: OutgoingConfig) -> Result<(StanzaWrite, StanzaRead)> {
let dnsname = ServerName::try_from(server_name)?;
let stream = tokio::net::TcpStream::connect(target).await?;
let stream = if is_c2s {
CLIENT_TLS_CONFIG.connect(dnsname, stream).await?
} else {
SERVER_TLS_CONFIG.connect(dnsname, stream).await?
};
let stream = config.connector_alpn(is_c2s).connect(dnsname, stream).await?;
let (rd, wrt) = tokio::io::split(stream);
Ok((StanzaWrite::new(wrt), StanzaRead::new(rd)))
}
#[cfg(feature = "outgoing")]
pub async fn starttls_connect(target: SocketAddr, server_name: &str, is_c2s: bool, stream_open: &[u8], in_filter: &mut StanzaFilter) -> Result<(StanzaWrite, StanzaRead)> {
pub async fn starttls_connect(target: SocketAddr, server_name: &str, is_c2s: bool, stream_open: &[u8], in_filter: &mut StanzaFilter, config: OutgoingConfig) -> Result<(StanzaWrite, StanzaRead)> {
let dnsname = ServerName::try_from(server_name)?;
let mut stream = tokio::net::TcpStream::connect(target).await?;
let (in_rd, mut in_wr) = stream.split();
@ -80,11 +53,7 @@ pub async fn starttls_connect(target: SocketAddr, server_name: &str, is_c2s: boo
}
debug!("starttls starting TLS {}", server_name);
let stream = if is_c2s {
CLIENT_TLS_CONFIG.connect(dnsname, stream).await?
} else {
SERVER_TLS_CONFIG.connect(dnsname, stream).await?
};
let stream = config.connector(is_c2s).connect(dnsname, stream).await?;
let (rd, wrt) = tokio::io::split(stream);
Ok((StanzaWrite::new(wrt), StanzaRead::new(rd)))
}

33
src/websocket.rs
View File

@ -6,6 +6,15 @@ use tokio_tungstenite::tungstenite::protocol::WebSocketConfig;
// https://datatracker.ietf.org/doc/html/rfc7395
fn ws_cfg(max_stanza_size_bytes: usize) -> Option<WebSocketConfig> {
Some(WebSocketConfig {
max_send_queue: None, // unlimited
max_frame_size: Some(max_stanza_size_bytes), // this is exactly the stanza size
max_message_size: Some(max_stanza_size_bytes * 4), // this is the message size, default is 4x frame size, so I guess we'll do the same here
accept_unmasked_frames: true,
})
}
pub async fn handle_websocket_connection(
stream: BufStream<tokio_rustls::TlsStream<tokio::net::TcpStream>>,
client_addr: &mut Context<'_>,
@ -16,16 +25,7 @@ pub async fn handle_websocket_connection(
// accept the websocket
// todo: check SEC_WEBSOCKET_PROTOCOL or ORIGIN ?
let stream = tokio_tungstenite::accept_async_with_config(
stream,
Some(WebSocketConfig {
max_send_queue: None, // unlimited
max_frame_size: Some(config.max_stanza_size_bytes), // this is exactly the stanza size
max_message_size: Some(config.max_stanza_size_bytes * 4), // this is the message size, default is 4x frame size, so I guess we'll do the same here
accept_unmasked_frames: true,
}),
)
.await?;
let stream = tokio_tungstenite::accept_async_with_config(stream, ws_cfg(config.max_stanza_size_bytes)).await?;
let (in_wr, in_rd) = stream.split();
@ -89,30 +89,25 @@ use rustls::ServerName;
use std::convert::TryFrom;
use tokio::io::BufStream;
use tokio_rustls::TlsConnector;
use tokio_tungstenite::tungstenite::client::IntoClientRequest;
use tokio_tungstenite::tungstenite::http::header::{ORIGIN, SEC_WEBSOCKET_PROTOCOL};
use tokio_tungstenite::tungstenite::http::Uri;
pub async fn websocket_connect(target: SocketAddr, server_name: &str, url: &Uri, origin: &str, _is_c2s: bool) -> Result<(StanzaWrite, StanzaRead)> {
// todo: WebSocketConfig
// todo: static ? alpn? client cert auth for server
let connector = rustls::ClientConfig::builder().with_safe_defaults().with_root_certificates(root_cert_store()).with_no_client_auth();
#[cfg(feature = "outgoing")]
pub async fn websocket_connect(target: SocketAddr, server_name: &str, url: &Uri, origin: &str, is_c2s: bool, config: OutgoingConfig) -> Result<(StanzaWrite, StanzaRead)> {
let mut request = url.into_client_request()?;
request.headers_mut().append(SEC_WEBSOCKET_PROTOCOL, "xmpp".parse()?);
request.headers_mut().append(ORIGIN, origin.parse()?);
let dnsname = ServerName::try_from(server_name)?;
let stream = tokio::net::TcpStream::connect(target).await?;
let connector = TlsConnector::from(Arc::new(connector));
let stream = connector.connect(dnsname, stream).await?;
let stream = config.connector(is_c2s).connect(dnsname, stream).await?;
let stream: tokio_rustls::TlsStream<tokio::net::TcpStream> = stream.into();
// todo: tokio_tungstenite seems to have a bug, if the write buffer is non-zero, it'll hang forever, even though we always flush, investigate
let stream = BufStream::with_capacity(crate::IN_BUFFER_SIZE, 0, stream);
let (stream, _) = tokio_tungstenite::client_async_with_config(request, stream, None).await?;
let (stream, _) = tokio_tungstenite::client_async_with_config(request, stream, ws_cfg(config.max_stanza_size_bytes)).await?;
let (wrt, rd) = stream.split();