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degesch: add trivial SASL EXTERNAL support 

Just set `tls_cert`, and add `sasl` to `capabilities`.
This commit is contained in:
Přemysl Eric Janouch 2021-05-28 02:11:23 +02:00
parent bb451a5050
commit 5a0b2d1c57
Signed by: p
GPG Key ID: A0420B94F92B9493
3 changed files with 61 additions and 22 deletions
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3
NEWS
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@ -2,6 +2,9 @@
* degesch: added a /squery command for IRCnet
* degesch: added trivial support for SASL EXTERNAL, enabled by adding "sasl"
to the respective server's "capabilities" list
* degesch: now supporting IRCv3.2 capability negotiation, including CAP DEL

74
degesch.c
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@ -1721,6 +1721,7 @@ struct server
struct strv cap_ls_buf; ///< Buffer for IRCv3.2 CAP LS
bool cap_echo_message; ///< Whether the server echoes messages
bool cap_away_notify; ///< Whether we get AWAY notifications
bool cap_sasl; ///< Whether SASL is available
// Server-specific information (from RPL_ISUPPORT):
@ -4962,6 +4963,7 @@ irc_destroy_state (struct server *s)
strv_reset (&s->cap_ls_buf);
s->cap_away_notify = false;
s->cap_echo_message = false;
s->cap_sasl = false;
// Need to call this before server_init_specifics()
irc_set_casemapping (s, irc_tolower, irc_strxfrm);
@ -6526,6 +6528,20 @@ irc_process_sent_message (const struct irc_message *msg, struct server *s)
// --- Input handling ----------------------------------------------------------
static void
irc_handle_authenticate (struct server *s, const struct irc_message *msg)
{
if (msg->params.len < 1)
return;
// Empty challenge -> empty response for e.g. SASL EXTERNAL,
// abort anything else as it doesn't make much sense to let the user do it
if (!strcmp (msg->params.vector[0], "+"))
irc_send (s, "AUTHENTICATE +");
else
irc_send (s, "AUTHENTICATE *");
}
static void
irc_handle_away (struct server *s, const struct irc_message *msg)
{
@ -6579,10 +6595,9 @@ irc_process_cap_ls (struct server *s)
static void
irc_toggle_cap (struct server *s, const char *cap, bool active)
{
if (!strcasecmp_ascii (cap, "echo-message"))
s->cap_echo_message = active;
if (!strcasecmp_ascii (cap, "away-notify"))
s->cap_away_notify = active;
if (!strcasecmp_ascii (cap, "echo-message")) s->cap_echo_message = active;
if (!strcasecmp_ascii (cap, "away-notify")) s->cap_away_notify = active;
if (!strcasecmp_ascii (cap, "sasl")) s->cap_sasl = active;
}
static void
@ -6612,13 +6627,17 @@ irc_handle_cap (struct server *s, const struct irc_message *msg)
}
irc_toggle_cap (s, cap, active);
}
irc_send (s, "CAP END");
if (s->cap_sasl && s->transport == &g_transport_tls)
irc_send (s, "AUTHENTICATE EXTERNAL");
else if (s->state == IRC_CONNECTED)
irc_send (s, "CAP END");
}
else if (!strcasecmp_ascii (subcommand, "NAK"))
{
log_server_error (s, s->buffer,
"#s: #S", "Capabilities not acknowledged", args);
irc_send (s, "CAP END");
if (s->state == IRC_CONNECTED)
irc_send (s, "CAP END");
}
else if (!strcasecmp_ascii (subcommand, "DEL"))
{
@ -7280,22 +7299,23 @@ irc_handle_topic (struct server *s, const struct irc_message *msg)
static struct irc_handler g_irc_handlers[] =
{
// This list needs to stay sorted
{ "AWAY", irc_handle_away },
{ "CAP", irc_handle_cap },
{ "ERROR", irc_handle_error },
{ "INVITE", irc_handle_invite },
{ "JOIN", irc_handle_join },
{ "KICK", irc_handle_kick },
{ "KILL", irc_handle_kill },
{ "MODE", irc_handle_mode },
{ "NICK", irc_handle_nick },
{ "NOTICE", irc_handle_notice },
{ "PART", irc_handle_part },
{ "PING", irc_handle_ping },
{ "PRIVMSG", irc_handle_privmsg },
{ "QUIT", irc_handle_quit },
{ "TAGMSG", irc_handle_tagmsg },
{ "TOPIC", irc_handle_topic },
{ "AUTHENTICATE", irc_handle_authenticate },
{ "AWAY", irc_handle_away },
{ "CAP", irc_handle_cap },
{ "ERROR", irc_handle_error },
{ "INVITE", irc_handle_invite },
{ "JOIN", irc_handle_join },
{ "KICK", irc_handle_kick },
{ "KILL", irc_handle_kill },
{ "MODE", irc_handle_mode },
{ "NICK", irc_handle_nick },
{ "NOTICE", irc_handle_notice },
{ "PART", irc_handle_part },
{ "PING", irc_handle_ping },
{ "PRIVMSG", irc_handle_privmsg },
{ "QUIT", irc_handle_quit },
{ "TAGMSG", irc_handle_tagmsg },
{ "TOPIC", irc_handle_topic },
};
static bool
@ -7976,6 +7996,16 @@ irc_process_numeric (struct server *s,
if (irc_handle_rpl_endofwho (s, msg)) buffer = NULL;
break;
case IRC_ERR_NICKLOCKED:
case IRC_RPL_SASLSUCCESS:
case IRC_ERR_SASLFAIL:
case IRC_ERR_SASLTOOLONG:
case IRC_ERR_SASLABORTED:
case IRC_ERR_SASLALREADY:
if (s->state == IRC_CONNECTED)
irc_send (s, "CAP END");
break;
case IRC_RPL_LIST:
case IRC_ERR_UNKNOWNCOMMAND:

6
kike-replies
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@ -85,3 +85,9 @@
482 IRC_ERR_CHANOPRIVSNEEDED "%s :You're not channel operator"
501 IRC_ERR_UMODEUNKNOWNFLAG ":Unknown MODE flag"
502 IRC_ERR_USERSDONTMATCH ":Cannot change mode for other users"
902 IRC_ERR_NICKLOCKED ":You must use a nick assigned to you"
903 IRC_RPL_SASLSUCCESS ":SASL authentication successful"
904 IRC_ERR_SASLFAIL ":SASL authentication failed"
905 IRC_ERR_SASLTOOLONG ":SASL message too long"
906 IRC_ERR_SASLABORTED ":SASL authentication aborted"
907 IRC_ERR_SASLALREADY ":You have already authenticated using SASL"