1 /************************************************************************
2 * IRC - Internet Relay Chat, src/s_auth.c
3 * Copyright (C) 1992 Darren Reed
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 1, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * July 6, 1999 - Rewrote most of the code here. When a client connects
21 * to the server and passes initial socket validation checks, it
22 * is owned by this module (auth) which returns it to the rest of the
23 * server when dns and auth queries are finished. Until the client is
24 * released, the server does not know it exists and does not process
25 * any messages from it.
26 * --Bleep Thomas Helvey <tomh@inxpress.net>
28 * December 26, 2005 - Rewrite the flag handling and integrate that with
29 * an IRCnet-style IAuth protocol.
33 * @brief Implementation of DNS and ident lookups.
34 * @version $Id: s_auth.c,v 1.37.2.17 2006/06/08 01:58:36 entrope Exp $
43 #include "ircd_alloc.h"
44 #include "ircd_chattr.h"
45 #include "ircd_events.h"
46 #include "ircd_features.h"
48 #include "ircd_osdep.h"
49 #include "ircd_reply.h"
50 #include "ircd_snprintf.h"
51 #include "ircd_string.h"
53 #include "msg.h" /* for MAXPARA */
55 #include "querycmds.h"
70 #include <sys/socket.h>
71 #include <sys/ioctl.h>
73 /** Pending operations during registration. */
74 enum AuthRequestFlag
{
75 AR_AUTH_PENDING
, /**< ident connecting or waiting for response */
76 AR_DNS_PENDING
, /**< dns request sent, waiting for response */
77 AR_CAP_PENDING
, /**< in middle of CAP negotiations */
78 AR_NEEDS_PONG
, /**< user has not PONGed */
79 AR_NEEDS_USER
, /**< user must send USER command */
80 AR_NEEDS_NICK
, /**< user must send NICK command */
81 AR_LAST_SCAN
= AR_NEEDS_NICK
, /**< maximum flag to scan through */
82 AR_IAUTH_PENDING
, /**< iauth request sent, waiting for response */
83 AR_IAUTH_HURRY
, /**< we told iauth to hurry up */
84 AR_IAUTH_USERNAME
, /**< iauth sent a username (preferred or forced) */
85 AR_IAUTH_FUSERNAME
, /**< iauth sent a forced username */
86 AR_PASSWORD_CHECKED
, /**< client password already checked */
90 DECLARE_FLAGSET(AuthRequestFlags
, AR_NUM_FLAGS
);
92 /** Stores registration state of a client. */
94 struct AuthRequest
* next
; /**< linked list node ptr */
95 struct AuthRequest
* prev
; /**< linked list node ptr */
96 struct Client
* client
; /**< pointer to client struct for request */
97 struct irc_sockaddr local
; /**< local endpoint address */
98 struct irc_in_addr original
; /**< original client IP address */
99 struct Socket socket
; /**< socket descriptor for auth queries */
100 struct Timer timeout
; /**< timeout timer for ident and dns queries */
101 struct AuthRequestFlags flags
; /**< current state of request */
102 unsigned int cookie
; /**< cookie the user must PONG */
103 unsigned short port
; /**< client's remote port number */
106 /** Array of message text (with length) pairs for AUTH status
107 * messages. Indexed using #ReportType.
112 } HeaderMessages
[] = {
113 #define MSG(STR) { STR, sizeof(STR) - 1 }
114 MSG("NOTICE AUTH :*** Looking up your hostname\r\n"),
115 MSG("NOTICE AUTH :*** Found your hostname\r\n"),
116 MSG("NOTICE AUTH :*** Couldn't look up your hostname\r\n"),
117 MSG("NOTICE AUTH :*** Checking Ident\r\n"),
118 MSG("NOTICE AUTH :*** Got ident response\r\n"),
119 MSG("NOTICE AUTH :*** No ident response\r\n"),
120 MSG("NOTICE AUTH :*** \r\n"),
121 MSG("NOTICE AUTH :*** Your forward and reverse DNS do not match, "
122 "ignoring hostname.\r\n"),
123 MSG("NOTICE AUTH :*** Invalid hostname\r\n")
127 /** Enum used to index messages in the HeaderMessages[] array. */
140 /** Sends response \a r (from #ReportType) to client \a c. */
141 #define sendheader(c, r) \
142 send(cli_fd(c), HeaderMessages[(r)].message, HeaderMessages[(r)].length, 0)
144 /** Enumeration of IAuth connection flags. */
147 IAUTH_BLOCKED
, /**< socket buffer full */
148 IAUTH_CLOSING
, /**< candidate to be disposed */
149 /* The following flags are controlled by iauth's "O" options command. */
150 IAUTH_ADDLINFO
, /**< Send additional info
151 * (password and username). */
152 IAUTH_FIRST_OPTION
= IAUTH_ADDLINFO
, /**< First flag that is a policy option. */
153 IAUTH_REQUIRED
, /**< IAuth completion required for registration. */
154 IAUTH_TIMEOUT
, /**< Refuse new connections if IAuth is behind. */
155 IAUTH_EXTRAWAIT
, /**< Give IAuth extra time to answer. */
156 IAUTH_UNDERNET
, /**< Enable Undernet extensions. */
157 IAUTH_LAST_FLAG
/**< total number of flags */
159 /** Declare a bitset structure indexed by IAuthFlag. */
160 DECLARE_FLAGSET(IAuthFlags
, IAUTH_LAST_FLAG
);
162 /** Describes state of an IAuth connection. */
164 struct MsgQ i_sendQ
; /**< messages queued to send */
165 struct Socket i_socket
; /**< main socket to iauth */
166 struct Socket i_stderr
; /**< error socket for iauth */
167 struct IAuthFlags i_flags
; /**< connection state/status/flags */
168 uint64_t i_recvB
; /**< bytes received */
169 uint64_t i_sendB
; /**< bytes sent */
170 time_t started
; /**< time that this instance was started */
171 unsigned int i_recvM
; /**< messages received */
172 unsigned int i_sendM
; /**< messages sent */
173 unsigned int i_count
; /**< characters used in i_buffer */
174 unsigned int i_errcount
; /**< characters used in i_errbuf */
175 int i_debug
; /**< debug level */
176 char i_buffer
[BUFSIZE
+1]; /**< partial unprocessed line from server */
177 char i_errbuf
[BUFSIZE
+1]; /**< partial unprocessed error line */
178 char *i_version
; /**< iauth version string */
179 struct SLink
*i_config
; /**< configuration string list */
180 struct SLink
*i_stats
; /**< statistics string list */
181 char **i_argv
; /**< argument list */
184 /** Return whether flag \a flag is set on \a iauth. */
185 #define IAuthHas(iauth, flag) ((iauth) && FlagHas(&(iauth)->i_flags, flag))
186 /** Set flag \a flag on \a iauth. */
187 #define IAuthSet(iauth, flag) FlagSet(&(iauth)->i_flags, flag)
188 /** Clear flag \a flag from \a iauth. */
189 #define IAuthClr(iauth, flag) FlagClr(&(iauth)->i_flags, flag)
190 /** Get connected flag for \a iauth. */
191 #define i_GetConnected(iauth) ((iauth) && s_fd(i_socket(iauth)) > -1)
193 /** Return socket event generator for \a iauth. */
194 #define i_socket(iauth) (&(iauth)->i_socket)
195 /** Return stderr socket for \a iauth. */
196 #define i_stderr(iauth) (&(iauth)->i_stderr)
197 /** Return outbound message queue for \a iauth. */
198 #define i_sendQ(iauth) (&(iauth)->i_sendQ)
199 /** Return debug level for \a iauth. */
200 #define i_debug(iauth) ((iauth)->i_debug)
202 /** Active instance of IAuth. */
205 static void iauth_sock_callback(struct Event
*ev
);
206 static void iauth_stderr_callback(struct Event
*ev
);
207 static int sendto_iauth(struct Client
*cptr
, const char *format
, ...);
208 static int preregister_user(struct Client
*cptr
);
209 typedef int (*iauth_cmd_handler
)(struct IAuth
*iauth
, struct Client
*cli
,
210 int parc
, char **params
);
212 /** Set username for user associated with \a auth.
213 * @param[in] auth Client authorization request to work on.
214 * @return Zero if client is kept, CPTR_KILLED if client rejected.
216 static int auth_set_username(struct AuthRequest
*auth
)
218 struct Client
*sptr
= auth
->client
;
219 struct User
*user
= cli_user(sptr
);
230 short digitgroups
= 0;
234 if (FlagHas(&auth
->flags
, AR_IAUTH_USERNAME
))
236 ircd_strncpy(cli_user(sptr
)->username
, cli_username(sptr
), USERLEN
);
240 /* Copy username from source to destination. Since they may be the
241 * same, and we may prefix with a '~', use a buffer character (ch)
242 * to hold the next character to copy.
244 s
= IsIdented(sptr
) ? cli_username(sptr
) : user
->username
;
247 if (HasFlag(sptr
, FLAG_DOID
) && !IsIdented(sptr
))
252 while (last
&& !IsCntrl(last
) && rlen
--)
255 *d
++ = IsUserChar(last
) ? last
: '_';
256 last
= (ch
!= '~') ? ch
: '_';
261 /* If username is empty or just ~, reject. */
262 if ((user
->username
[0] == '\0')
263 || ((user
->username
[0] == '~') && (user
->username
[1] == '\0')))
264 return exit_client(sptr
, sptr
, &me
, "USER: Bogus userid.");
266 /* Check for K- or G-line. */
267 killreason
= find_kill(sptr
, 1);
269 ServerStats
->is_ref
++;
270 return exit_client(sptr
, sptr
, &me
,
271 (killreason
== -1 ? "K-lined" : "G-lined"));
274 if (!FlagHas(&auth
->flags
, AR_IAUTH_FUSERNAME
))
276 /* Check for mixed case usernames, meaning probably hacked. Jon2 3-94
277 * Explanations of rules moved to where it is checked Entrope 2-06
279 s
= d
= user
->username
+ (user
->username
[0] == '~');
288 else if (IsUpper(ch
))
291 /* Accept caps as leading if we haven't seen lower case or digits yet. */
292 if ((leadcaps
|| pos
== 0) && !lower
&& !digits
)
295 else if (IsDigit(ch
))
298 if (pos
== 0 || !IsDigit(last
))
301 /* If more than two groups of digits, reject. */
306 else if (ch
== '-' || ch
== '_' || ch
== '.')
309 /* If -_. exist at start, consecutively, or more than twice, reject. */
310 if (pos
== 0 || last
== '-' || last
== '_' || last
== '.' || other
> 2)
313 else /* All other punctuation is rejected. */
317 /* If mixed case, first must be capital, but no more than three;
318 * but if three capitals, they must all be leading. */
319 if (lower
&& upper
&& (!leadcaps
|| leadcaps
> 3 ||
320 (upper
> 2 && upper
> leadcaps
)))
322 /* If two different groups of digits, one must be either at the
324 if (digitgroups
== 2 && !(IsDigit(s
[0]) || IsDigit(ch
)))
326 /* Must have at least one letter. */
327 if (!lower
&& !upper
)
329 /* Final character must not be punctuation. */
337 /* If we confirmed their username, and it is what they claimed,
339 if (IsIdented(sptr
) && !strcmp(cli_username(sptr
), user
->username
))
342 ServerStats
->is_ref
++;
343 send_reply(sptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
344 ":Your username is invalid.");
345 send_reply(sptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
346 ":Connect with your real username, in lowercase.");
347 send_reply(sptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
348 ":If your mail address were foo@bar.com, your username "
350 return exit_client(sptr
, sptr
, &me
, "USER: Bad username");
353 /** Check whether an authorization request is complete.
354 * This means that no flags from 0 to #AR_LAST_SCAN are set on \a auth.
355 * If #AR_IAUTH_PENDING is set, optionally go into "hurry" state. If
356 * 0 through #AR_LAST_SCAN and #AR_IAUTH_PENDING are all clear,
357 * destroy \a auth, clear the password, set the username, and register
359 * @param[in] auth Authorization request to check.
360 * @return Zero if client is kept, CPTR_KILLED if client rejected.
362 static int check_auth_finished(struct AuthRequest
*auth
)
364 enum AuthRequestFlag flag
;
367 /* Check non-iauth registration blocking flags. */
368 for (flag
= 0; flag
<= AR_LAST_SCAN
; ++flag
)
369 if (FlagHas(&auth
->flags
, flag
))
371 Debug((DEBUG_INFO
, "Auth %p [%d] still has flag %d", auth
,
372 cli_fd(auth
->client
), flag
));
376 /* If appropriate, do preliminary assignment to connection class. */
377 if (IsUserPort(auth
->client
)
378 && !FlagHas(&auth
->flags
, AR_IAUTH_HURRY
)
379 && preregister_user(auth
->client
))
382 /* If we have not done so, check client password. Do this as soon
383 * as possible so that iauth's challenge/response (which uses PASS
384 * for responses) is not confused with the client's password.
386 if (IsUserPort(auth
->client
)
387 && !FlagHas(&auth
->flags
, AR_PASSWORD_CHECKED
))
389 struct ConfItem
*aconf
;
391 aconf
= cli_confs(auth
->client
)->value
.aconf
;
393 && !EmptyString(aconf
->passwd
)
394 && strcmp(cli_passwd(auth
->client
), aconf
->passwd
))
396 ServerStats
->is_ref
++;
397 send_reply(auth
->client
, ERR_PASSWDMISMATCH
);
398 return exit_client(auth
->client
, auth
->client
, &me
, "Bad Password");
400 FlagSet(&auth
->flags
, AR_PASSWORD_CHECKED
);
403 /* Check if iauth is done. */
404 if (FlagHas(&auth
->flags
, AR_IAUTH_PENDING
))
406 /* Switch auth request to hurry-up state. */
407 if (!FlagHas(&auth
->flags
, AR_IAUTH_HURRY
))
409 /* Set "hurry" flag in auth request. */
410 FlagSet(&auth
->flags
, AR_IAUTH_HURRY
);
412 /* If iauth wants it, send notification. */
413 if (IAuthHas(iauth
, IAUTH_UNDERNET
))
414 sendto_iauth(auth
->client
, "H %s", get_client_class(auth
->client
));
416 /* If iauth wants it, give client more time. */
417 if (IAuthHas(iauth
, IAUTH_EXTRAWAIT
))
418 cli_firsttime(auth
->client
) = CurrentTime
;
421 Debug((DEBUG_INFO
, "Auth %p [%d] still has flag %d", auth
,
422 cli_fd(auth
->client
), AR_IAUTH_PENDING
));
426 FlagSet(&auth
->flags
, AR_IAUTH_HURRY
);
428 destroy_auth_request(auth
);
429 if (!IsUserPort(auth
->client
))
431 memset(cli_passwd(auth
->client
), 0, sizeof(cli_passwd(auth
->client
)));
432 res
= auth_set_username(auth
);
434 res
= register_user(auth
->client
, auth
->client
);
438 /** Verify that a hostname is valid, i.e., only contains characters
439 * valid for a hostname and that a hostname is not too long.
440 * @param host Hostname to check.
441 * @param maxlen Maximum length of hostname, not including NUL terminator.
442 * @return Non-zero if the hostname is valid.
445 auth_verify_hostname(const char *host
, int maxlen
)
449 /* Walk through the host name */
450 for (i
= 0; host
[i
]; i
++)
451 /* If it's not a hostname character or if it's too long, return false */
452 if (!IsHostChar(host
[i
]) || i
>= maxlen
)
455 return 1; /* it's a valid hostname */
458 /** Assign a client to a connection class.
459 * @param[in] cptr Client to assign to a class.
460 * @return Zero if client is kept, CPTR_KILLED if rejected.
462 static int preregister_user(struct Client
*cptr
)
464 static time_t last_too_many1
;
465 static time_t last_too_many2
;
467 ircd_strncpy(cli_user(cptr
)->host
, cli_sockhost(cptr
), HOSTLEN
);
468 ircd_strncpy(cli_user(cptr
)->realhost
, cli_sockhost(cptr
), HOSTLEN
);
470 switch (conf_check_client(cptr
))
474 case ACR_NO_AUTHORIZATION
:
475 sendto_opmask_butone(0, SNO_UNAUTH
, "Unauthorized connection from %s.",
476 get_client_name(cptr
, HIDE_IP
));
477 ++ServerStats
->is_ref
;
478 return exit_client(cptr
, cptr
, &me
,
479 "No Authorization - use another server");
480 case ACR_TOO_MANY_IN_CLASS
:
481 sendto_opmask_butone_ratelimited(0, SNO_TOOMANY
, &last_too_many1
,
482 "Too many connections in class %s for %s.",
483 get_client_class(cptr
),
484 get_client_name(cptr
, SHOW_IP
));
485 ++ServerStats
->is_ref
;
486 return exit_client(cptr
, cptr
, &me
,
487 "Sorry, your connection class is full - try "
488 "again later or try another server");
489 case ACR_TOO_MANY_FROM_IP
:
490 sendto_opmask_butone_ratelimited(0, SNO_TOOMANY
, &last_too_many2
,
491 "Too many connections from same IP for %s.",
492 get_client_name(cptr
, SHOW_IP
));
493 ++ServerStats
->is_ref
;
494 return exit_client(cptr
, cptr
, &me
,
495 "Too many connections from your host");
496 case ACR_ALREADY_AUTHORIZED
:
497 /* Can this ever happen? */
499 ++ServerStats
->is_ref
;
500 IPcheck_connect_fail(cptr
);
501 return exit_client(cptr
, cptr
, &me
, "Unknown error -- Try again");
506 /** Send the ident server a query giving "theirport , ourport". The
507 * write is only attempted *once* so it is deemed to be a fail if the
508 * entire write doesn't write all the data given. This shouldn't be a
509 * problem since the socket should have a write buffer far greater
510 * than this message to store it in should problems arise. -avalon
511 * @param[in] auth The request to send.
513 static void send_auth_query(struct AuthRequest
* auth
)
520 ircd_snprintf(0, authbuf
, sizeof(authbuf
), "%hu , %hu\r\n",
521 auth
->port
, auth
->local
.port
);
523 if (IO_SUCCESS
!= os_send_nonb(s_fd(&auth
->socket
), authbuf
, strlen(authbuf
), &count
)) {
524 close(s_fd(&auth
->socket
));
525 socket_del(&auth
->socket
);
526 s_fd(&auth
->socket
) = -1;
527 ++ServerStats
->is_abad
;
528 if (IsUserPort(auth
->client
))
529 sendheader(auth
->client
, REPORT_FAIL_ID
);
530 FlagClr(&auth
->flags
, AR_AUTH_PENDING
);
531 check_auth_finished(auth
);
535 /** Enum used to index ident reply fields in a human-readable way. */
536 enum IdentReplyFields
{
544 /** Parse an ident reply line and extract the userid from it.
545 * @param[in] reply The ident reply line.
546 * @return The userid, or NULL on parse failure.
548 static char* check_ident_reply(char* reply
)
552 char* vector
[USERID_TOKEN_COUNT
];
553 int count
= token_vector(reply
, ':', vector
, USERID_TOKEN_COUNT
);
555 if (USERID_TOKEN_COUNT
!= count
)
558 * second token is the reply type
560 token
= vector
[IDENT_REPLY_TYPE
];
561 if (EmptyString(token
))
564 while (IsSpace(*token
))
567 if (0 != strncmp(token
, "USERID", 6))
571 * third token is the os type
573 token
= vector
[IDENT_OS_TYPE
];
574 if (EmptyString(token
))
576 while (IsSpace(*token
))
580 * Unless "OTHER" is specified as the operating system
581 * type, the server is expected to return the "normal"
582 * user identification of the owner of this connection.
583 * "Normal" in this context may be taken to mean a string
584 * of characters which uniquely identifies the connection
585 * owner such as a user identifier assigned by the system
586 * administrator and used by such user as a mail
587 * identifier, or as the "user" part of a user/password
588 * pair used to gain access to system resources. When an
589 * operating system is specified (e.g., anything but
590 * "OTHER"), the user identifier is expected to be in a
591 * more or less immediately useful form - e.g., something
592 * that could be used as an argument to "finger" or as a
595 if (0 == strncmp(token
, "OTHER", 5))
598 * fourth token is the username
600 token
= vector
[IDENT_INFO
];
601 if (EmptyString(token
))
603 while (IsSpace(*token
))
606 * look for the end of the username, terminators are '\0, @, <SPACE>, :'
608 for (end
= token
; *end
; ++end
) {
609 if (IsSpace(*end
) || '@' == *end
|| ':' == *end
)
616 /** Read the reply (if any) from the ident server we connected to. We
617 * only give it one shot, if the reply isn't good the first time fail
618 * the authentication entirely. --Bleep
619 * @param[in] auth The request to read.
621 static void read_auth_reply(struct AuthRequest
* auth
)
626 * rfc1453 sez we MUST accept 512 bytes
628 char buf
[BUFSIZE
+ 1];
631 assert(0 != auth
->client
);
632 assert(auth
== cli_auth(auth
->client
));
634 if (IO_SUCCESS
== os_recv_nonb(s_fd(&auth
->socket
), buf
, BUFSIZE
, &len
)) {
636 Debug((DEBUG_INFO
, "Auth %p [%d] reply: %s", auth
, cli_fd(auth
->client
), buf
));
637 username
= check_ident_reply(buf
);
638 Debug((DEBUG_INFO
, "Username: %s", username
));
641 Debug((DEBUG_INFO
, "Deleting auth [%d] socket %p", auth
, cli_fd(auth
->client
)));
642 close(s_fd(&auth
->socket
));
643 socket_del(&auth
->socket
);
644 s_fd(&auth
->socket
) = -1;
646 if (EmptyString(username
)) {
647 if (IsUserPort(auth
->client
))
648 sendheader(auth
->client
, REPORT_FAIL_ID
);
649 ++ServerStats
->is_abad
;
651 if (IsUserPort(auth
->client
))
652 sendheader(auth
->client
, REPORT_FIN_ID
);
653 ++ServerStats
->is_asuc
;
654 if (!FlagHas(&auth
->flags
, AR_IAUTH_USERNAME
)) {
655 ircd_strncpy(cli_username(auth
->client
), username
, USERLEN
);
656 SetGotId(auth
->client
);
658 if (IAuthHas(iauth
, IAUTH_UNDERNET
))
659 sendto_iauth(auth
->client
, "u %s", username
);
662 FlagClr(&auth
->flags
, AR_AUTH_PENDING
);
663 check_auth_finished(auth
);
666 /** Handle socket I/O activity.
667 * @param[in] ev A socket event whos associated data is the active
668 * struct AuthRequest.
670 static void auth_sock_callback(struct Event
* ev
)
672 struct AuthRequest
* auth
;
674 assert(0 != ev_socket(ev
));
675 assert(0 != s_data(ev_socket(ev
)));
677 auth
= (struct AuthRequest
*) s_data(ev_socket(ev
));
679 switch (ev_type(ev
)) {
680 case ET_DESTROY
: /* being destroyed */
683 case ET_CONNECT
: /* socket connection completed */
684 Debug((DEBUG_INFO
, "Connection completed for auth %p [%d]; sending query",
685 auth
, cli_fd(auth
->client
)));
686 socket_state(&auth
->socket
, SS_CONNECTED
);
687 send_auth_query(auth
);
690 case ET_READ
: /* socket is readable */
691 case ET_EOF
: /* end of file on socket */
692 case ET_ERROR
: /* error on socket */
693 Debug((DEBUG_INFO
, "Auth socket %p [%p] readable", auth
, ev_socket(ev
)));
694 read_auth_reply(auth
);
698 assert(0 && "Unrecognized event in auth_socket_callback().");
703 /** Stop an auth request completely.
704 * @param[in] auth The struct AuthRequest to cancel.
706 void destroy_auth_request(struct AuthRequest
* auth
)
708 Debug((DEBUG_INFO
, "Deleting auth request for %p", auth
->client
));
710 if (FlagHas(&auth
->flags
, AR_DNS_PENDING
)) {
711 delete_resolver_queries(auth
);
714 if (-1 < s_fd(&auth
->socket
)) {
715 close(s_fd(&auth
->socket
));
716 socket_del(&auth
->socket
);
717 s_fd(&auth
->socket
) = -1;
720 if (t_active(&auth
->timeout
))
721 timer_del(&auth
->timeout
);
722 cli_auth(auth
->client
) = NULL
;
725 /** Handle a 'ping' (authorization) timeout for a client.
726 * @param[in] cptr The client whose session authorization has timed out.
727 * @return Zero if client is kept, CPTR_KILLED if client rejected.
729 int auth_ping_timeout(struct Client
*cptr
)
731 struct AuthRequest
*auth
;
732 enum AuthRequestFlag flag
;
734 auth
= cli_auth(cptr
);
736 /* Check whether the auth request is gone (more likely, it never
737 * existed, as in an outbound server connection). */
739 return exit_client_msg(cptr
, cptr
, &me
, "Registration Timeout");
741 /* Check for a user-controlled timeout. */
742 for (flag
= 0; flag
<= AR_LAST_SCAN
; ++flag
) {
743 if (FlagHas(&auth
->flags
, flag
)) {
744 /* Display message if they have sent a NICK and a USER but no
747 if (*(cli_name(cptr
)) && cli_user(cptr
) && *(cli_user(cptr
))->username
) {
748 send_reply(cptr
, SND_EXPLICIT
| ERR_BADPING
,
749 ":Your client may not be compatible with this server.");
750 send_reply(cptr
, SND_EXPLICIT
| ERR_BADPING
,
751 ":Compatible clients are available at %s",
752 feature_str(FEAT_URL_CLIENTS
));
754 return exit_client_msg(cptr
, cptr
, &me
, "Registration Timeout");
758 /* Check for iauth timeout. */
759 if (FlagHas(&auth
->flags
, AR_IAUTH_PENDING
)) {
760 sendto_iauth(cptr
, "T");
761 if (IAuthHas(iauth
, IAUTH_REQUIRED
)) {
762 sendheader(cptr
, REPORT_FAIL_IAUTH
);
763 return exit_client_msg(cptr
, cptr
, &me
, "Authorization Timeout");
765 FlagClr(&auth
->flags
, AR_IAUTH_PENDING
);
766 return check_auth_finished(auth
);
769 assert(0 && "Unexpectedly reached end of auth_ping_timeout()");
773 /** Timeout a given auth request.
774 * @param[in] ev A timer event whose associated data is the expired
775 * struct AuthRequest.
777 static void auth_timeout_callback(struct Event
* ev
)
779 struct AuthRequest
* auth
;
781 assert(0 != ev_timer(ev
));
782 assert(0 != t_data(ev_timer(ev
)));
784 auth
= (struct AuthRequest
*) t_data(ev_timer(ev
));
786 if (ev_type(ev
) == ET_EXPIRE
) {
787 /* Report the timeout in the log. */
788 log_write(LS_RESOLVER
, L_INFO
, 0, "Registration timeout %s",
789 get_client_name(auth
->client
, HIDE_IP
));
791 /* Notify client if ident lookup failed. */
792 if (FlagHas(&auth
->flags
, AR_AUTH_PENDING
)) {
793 FlagClr(&auth
->flags
, AR_AUTH_PENDING
);
794 if (IsUserPort(auth
->client
))
795 sendheader(auth
->client
, REPORT_FAIL_ID
);
798 /* Likewise if dns lookup failed. */
799 if (FlagHas(&auth
->flags
, AR_DNS_PENDING
)) {
800 FlagClr(&auth
->flags
, AR_DNS_PENDING
);
801 delete_resolver_queries(auth
);
802 if (IsUserPort(auth
->client
))
803 sendheader(auth
->client
, REPORT_FAIL_DNS
);
806 /* Try to register the client. */
807 check_auth_finished(auth
);
811 /** Handle a complete DNS lookup. Send the client on it's way to a
812 * connection completion, regardless of success or failure -- unless
813 * there was a mismatch and KILL_IPMISMATCH is set.
814 * @param[in] vptr The pending struct AuthRequest.
815 * @param[in] addr IP address being resolved.
816 * @param[in] h_name Resolved name, or NULL if lookup failed.
818 static void auth_dns_callback(void* vptr
, const struct irc_in_addr
*addr
, const char *h_name
)
820 struct AuthRequest
* auth
= (struct AuthRequest
*) vptr
;
823 FlagClr(&auth
->flags
, AR_DNS_PENDING
);
825 /* DNS entry was missing for the IP. */
826 if (IsUserPort(auth
->client
))
827 sendheader(auth
->client
, REPORT_FAIL_DNS
);
828 sendto_iauth(auth
->client
, "d");
829 } else if (!irc_in_addr_valid(addr
)
830 || (irc_in_addr_cmp(&cli_ip(auth
->client
), addr
)
831 && irc_in_addr_cmp(&auth
->original
, addr
))) {
832 /* IP for hostname did not match client's IP. */
833 sendto_opmask_butone(0, SNO_IPMISMATCH
, "IP# Mismatch: %s != %s[%s]",
834 cli_sock_ip(auth
->client
), h_name
,
836 if (IsUserPort(auth
->client
))
837 sendheader(auth
->client
, REPORT_IP_MISMATCH
);
838 if (feature_bool(FEAT_KILL_IPMISMATCH
)) {
839 exit_client(auth
->client
, auth
->client
, &me
, "IP mismatch");
842 } else if (!auth_verify_hostname(h_name
, HOSTLEN
)) {
843 /* Hostname did not look valid. */
844 if (IsUserPort(auth
->client
))
845 sendheader(auth
->client
, REPORT_INVAL_DNS
);
846 sendto_iauth(auth
->client
, "d");
848 /* Hostname and mappings checked out. */
849 if (IsUserPort(auth
->client
))
850 sendheader(auth
->client
, REPORT_FIN_DNS
);
851 ircd_strncpy(cli_sockhost(auth
->client
), h_name
, HOSTLEN
);
852 sendto_iauth(auth
->client
, "N %s", h_name
);
854 check_auth_finished(auth
);
857 /** Flag the client to show an attempt to contact the ident server on
858 * the client's host. Should the connect or any later phase of the
859 * identifying process fail, it is aborted and the user is given a
860 * username of "unknown".
861 * @param[in] auth The request for which to start the ident lookup.
863 static void start_auth_query(struct AuthRequest
* auth
)
865 struct irc_sockaddr remote_addr
;
866 struct irc_sockaddr local_addr
;
871 assert(0 != auth
->client
);
874 * get the local address of the client and bind to that to
875 * make the auth request. This used to be done only for
876 * ifdef VIRTUAL_HOST, but needs to be done for all clients
877 * since the ident request must originate from that same address--
878 * and machines with multiple IP addresses are common now
880 memcpy(&local_addr
, &auth
->local
, sizeof(local_addr
));
882 memcpy(&remote_addr
.addr
, &cli_ip(auth
->client
), sizeof(remote_addr
.addr
));
883 remote_addr
.port
= 113;
884 fd
= os_socket(&local_addr
, SOCK_STREAM
, "auth query", 0);
886 ++ServerStats
->is_abad
;
887 if (IsUserPort(auth
->client
))
888 sendheader(auth
->client
, REPORT_FAIL_ID
);
891 if (IsUserPort(auth
->client
))
892 sendheader(auth
->client
, REPORT_DO_ID
);
894 if ((result
= os_connect_nonb(fd
, &remote_addr
)) == IO_FAILURE
||
895 !socket_add(&auth
->socket
, auth_sock_callback
, (void*) auth
,
896 result
== IO_SUCCESS
? SS_CONNECTED
: SS_CONNECTING
,
897 SOCK_EVENT_READABLE
, fd
)) {
898 ++ServerStats
->is_abad
;
899 if (IsUserPort(auth
->client
))
900 sendheader(auth
->client
, REPORT_FAIL_ID
);
905 FlagSet(&auth
->flags
, AR_AUTH_PENDING
);
906 if (result
== IO_SUCCESS
)
907 send_auth_query(auth
);
910 /** Initiate DNS lookup for a client.
911 * @param[in] auth The auth request for which to start the DNS lookup.
913 static void start_dns_query(struct AuthRequest
*auth
)
915 if (feature_bool(FEAT_NODNS
)) {
916 sendto_iauth(auth
->client
, "d");
920 if (irc_in_addr_is_loopback(&cli_ip(auth
->client
))) {
921 strcpy(cli_sockhost(auth
->client
), cli_name(&me
));
922 sendto_iauth(auth
->client
, "N %s", cli_sockhost(auth
->client
));
926 if (IsUserPort(auth
->client
))
927 sendheader(auth
->client
, REPORT_DO_DNS
);
929 FlagSet(&auth
->flags
, AR_DNS_PENDING
);
930 gethost_byaddr(&cli_ip(auth
->client
), auth_dns_callback
, auth
);
933 /** Initiate IAuth check for a client.
934 * @param[in] auth The auth request for which to star the IAuth check.
936 static void start_iauth_query(struct AuthRequest
*auth
)
938 FlagSet(&auth
->flags
, AR_IAUTH_PENDING
);
939 if (!sendto_iauth(auth
->client
, "C %s %hu %s %hu",
940 cli_sock_ip(auth
->client
), auth
->port
,
941 ircd_ntoa(&auth
->local
.addr
), auth
->local
.port
))
942 FlagClr(&auth
->flags
, AR_IAUTH_PENDING
);
945 /** Starts auth (identd) and dns queries for a client.
946 * @param[in] client The client for which to start queries.
948 void start_auth(struct Client
* client
)
950 struct irc_sockaddr remote
;
951 struct AuthRequest
* auth
;
954 Debug((DEBUG_INFO
, "Beginning auth request on client %p", client
));
956 /* Register with event handlers. */
957 cli_lasttime(client
) = CurrentTime
;
958 cli_since(client
) = CurrentTime
;
959 if (cli_fd(client
) > HighestFd
)
960 HighestFd
= cli_fd(client
);
961 LocalClientArray
[cli_fd(client
)] = client
;
962 socket_events(&(cli_socket(client
)), SOCK_ACTION_SET
| SOCK_EVENT_READABLE
);
964 /* Allocate the AuthRequest. */
965 auth
= MyCalloc(1, sizeof(*auth
));
967 auth
->client
= client
;
968 cli_auth(client
) = auth
;
969 s_fd(&auth
->socket
) = -1;
970 timer_add(timer_init(&auth
->timeout
), auth_timeout_callback
, (void*) auth
,
971 TT_RELATIVE
, feature_int(FEAT_AUTH_TIMEOUT
));
973 /* Try to get socket endpoint addresses. */
974 if (!os_get_sockname(cli_fd(client
), &auth
->local
)
975 || !os_get_peername(cli_fd(client
), &remote
)) {
976 ++ServerStats
->is_abad
;
977 if (IsUserPort(auth
->client
))
978 sendheader(auth
->client
, REPORT_FAIL_ID
);
979 exit_client(auth
->client
, auth
->client
, &me
, "Socket local/peer lookup failed");
982 auth
->port
= remote
.port
;
984 /* Try to start DNS lookup. */
985 start_dns_query(auth
);
987 /* Try to start ident lookup. */
988 start_auth_query(auth
);
990 /* Set required client inputs for users. */
991 if (IsUserPort(client
)) {
992 cli_user(client
) = make_user(client
);
993 cli_user(client
)->server
= &me
;
994 FlagSet(&auth
->flags
, AR_NEEDS_USER
);
995 FlagSet(&auth
->flags
, AR_NEEDS_NICK
);
997 /* Try to start iauth lookup. */
998 start_iauth_query(auth
);
1001 /* Add client to GlobalClientList. */
1002 add_client_to_list(client
);
1004 /* Check which auth events remain pending. */
1005 check_auth_finished(auth
);
1008 /** Mark that a user has PONGed while unregistered.
1009 * @param[in] auth Authorization request for client.
1010 * @param[in] cookie PONG cookie value sent by client.
1011 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1013 int auth_set_pong(struct AuthRequest
*auth
, unsigned int cookie
)
1015 assert(auth
!= NULL
);
1016 if (!FlagHas(&auth
->flags
, AR_NEEDS_PONG
))
1018 if (cookie
!= auth
->cookie
)
1020 send_reply(auth
->client
, SND_EXPLICIT
| ERR_BADPING
,
1021 ":To connect, type /QUOTE PONG %u", auth
->cookie
);
1024 cli_lasttime(auth
->client
) = CurrentTime
;
1025 FlagClr(&auth
->flags
, AR_NEEDS_PONG
);
1026 return check_auth_finished(auth
);
1029 /** Record a user's claimed username and userinfo.
1030 * @param[in] auth Authorization request for client.
1031 * @param[in] username Client's asserted username.
1032 * @param[in] userinfo Client's asserted self-description.
1033 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1035 int auth_set_user(struct AuthRequest
*auth
, const char *username
, const char *userinfo
)
1037 struct Client
*cptr
;
1039 assert(auth
!= NULL
);
1040 if (FlagHas(&auth
->flags
, AR_IAUTH_HURRY
))
1042 FlagClr(&auth
->flags
, AR_NEEDS_USER
);
1043 cptr
= auth
->client
;
1044 ircd_strncpy(cli_info(cptr
), userinfo
, REALLEN
);
1045 ircd_strncpy(cli_user(cptr
)->username
, username
, USERLEN
);
1046 ircd_strncpy(cli_user(cptr
)->host
, cli_sockhost(cptr
), HOSTLEN
);
1047 if (IAuthHas(iauth
, IAUTH_UNDERNET
))
1048 sendto_iauth(cptr
, "U %s :%s", username
, userinfo
);
1049 else if (IAuthHas(iauth
, IAUTH_ADDLINFO
))
1050 sendto_iauth(cptr
, "U %s", username
);
1051 return check_auth_finished(auth
);
1054 /** Handle authorization-related aspects of initial nickname selection.
1055 * This is called after verifying that the nickname is available.
1056 * @param[in] auth Authorization request for client.
1057 * @param[in] nickname Client's requested nickname.
1058 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1060 int auth_set_nick(struct AuthRequest
*auth
, const char *nickname
)
1062 assert(auth
!= NULL
);
1063 FlagClr(&auth
->flags
, AR_NEEDS_NICK
);
1065 * If the client hasn't gotten a cookie-ping yet,
1066 * choose a cookie and send it. -record!jegelhof@cloud9.net
1068 if (!auth
->cookie
) {
1070 auth
->cookie
= ircrandom();
1071 } while (!auth
->cookie
);
1072 sendrawto_one(auth
->client
, "PING :%u", auth
->cookie
);
1073 FlagSet(&auth
->flags
, AR_NEEDS_PONG
);
1075 if (IAuthHas(iauth
, IAUTH_UNDERNET
))
1076 sendto_iauth(auth
->client
, "n %s", nickname
);
1077 return check_auth_finished(auth
);
1080 /** Record a user's password.
1081 * @param[in] auth Authorization request for client.
1082 * @param[in] password Client's password.
1083 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1085 int auth_set_password(struct AuthRequest
*auth
, const char *password
)
1087 assert(auth
!= NULL
);
1088 if (IAuthHas(iauth
, IAUTH_ADDLINFO
))
1089 sendto_iauth(auth
->client
, "P :%s", password
);
1093 /** Send exit notification for \a cptr to iauth.
1094 * @param[in] cptr Client who is exiting.
1096 void auth_send_exit(struct Client
*cptr
)
1098 sendto_iauth(cptr
, "D");
1101 /** Mark that a user has started capabilities negotiation.
1102 * This blocks authorization until auth_cap_done() is called.
1103 * @param[in] auth Authorization request for client.
1104 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1106 int auth_cap_start(struct AuthRequest
*auth
)
1108 assert(auth
!= NULL
);
1109 FlagSet(&auth
->flags
, AR_CAP_PENDING
);
1113 /** Mark that a user has completed capabilities negotiation.
1114 * This unblocks authorization if auth_cap_start() was called.
1115 * @param[in] auth Authorization request for client.
1116 * @return Zero if client should be kept, CPTR_KILLED if rejected.
1118 int auth_cap_done(struct AuthRequest
*auth
)
1120 assert(auth
!= NULL
);
1121 FlagClr(&auth
->flags
, AR_CAP_PENDING
);
1122 return check_auth_finished(auth
);
1125 /** Attempt to spawn the process for an IAuth instance.
1126 * @param[in] iauth IAuth descriptor.
1127 * @param[in] automatic If non-zero, apply sanity checks against
1128 * excessive automatic restarts.
1129 * @return 0 on success, non-zero on failure.
1131 int iauth_do_spawn(struct IAuth
*iauth
, int automatic
)
1138 if (automatic
&& CurrentTime
- iauth
->started
< 5)
1140 sendto_opmask_butone(NULL
, SNO_AUTH
, "IAuth crashed fast, leaving it dead.");
1144 /* Record time we tried to spawn the iauth process. */
1145 iauth
->started
= CurrentTime
;
1147 /* Attempt to allocate a pair of sockets. */
1148 res
= os_socketpair(s_io
);
1152 /* Mark the parent's side of the pair (element 0) as non-blocking. */
1153 res
= os_set_nonblocking(s_io
[0]);
1161 /* Initialize the socket structure to talk to the child. */
1162 res
= socket_add(i_socket(iauth
), iauth_sock_callback
, iauth
,
1163 SS_CONNECTED
, SOCK_EVENT_READABLE
, s_io
[0]);
1171 /* Allocate another pair for stderr. */
1172 res
= os_socketpair(s_err
);
1175 socket_del(i_socket(iauth
));
1181 /* Mark parent side of this pair non-blocking, too. */
1182 res
= os_set_nonblocking(s_err
[0]);
1187 socket_del(i_socket(iauth
));
1193 /* And set up i_stderr(iauth). */
1194 res
= socket_add(i_stderr(iauth
), iauth_stderr_callback
, iauth
,
1195 SS_CONNECTED
, SOCK_EVENT_READABLE
, s_err
[0]);
1200 socket_del(i_socket(iauth
));
1206 /* Attempt to fork a child process. */
1209 /* Error forking the child, still in parent. */
1211 socket_del(i_stderr(iauth
));
1214 socket_del(i_socket(iauth
));
1221 /* We are the parent process. Close the child's sockets. */
1224 /* Send our server name (supposedly for proxy checking purposes)
1225 * and maximum number of connections (for allocation hints).
1226 * Need to use conf_get_local() since &me may not be fully
1227 * initialized the first time we run.
1229 sendto_iauth(NULL
, "M %s %d", conf_get_local()->name
, MAXCONNECTIONS
);
1230 /* Indicate success (until the child dies). */
1234 /* We are the child process.
1235 * Duplicate our end of the socket to stdin, stdout and stderr.
1236 * Then close all the higher-numbered FDs and exec the process.
1238 if (dup2(s_io
[1], 0) == 0
1239 && dup2(s_io
[1], 1) == 1
1240 && dup2(s_err
[1], 2) == 2) {
1241 close_connections(0);
1242 execvp(iauth
->i_argv
[0], iauth
->i_argv
);
1245 /* If we got here, something was seriously wrong. */
1249 /** See if an %IAuth program must be spawned.
1250 * If a process is already running with the specified options, keep it.
1251 * Otherwise spawn a new child process to perform the %IAuth function.
1252 * @param[in] argc Number of parameters to use when starting process.
1253 * @param[in] argv Array of parameters to start process.
1254 * @return 0 on failure, 1 on new process, 2 on reuse of existing process.
1256 int auth_spawn(int argc
, char *argv
[])
1263 /* Check that incoming arguments all match pre-existing arguments. */
1264 for (ii
= 0; same
&& (ii
< argc
); ++ii
) {
1265 if (NULL
== iauth
->i_argv
[ii
]
1266 || 0 != strcmp(iauth
->i_argv
[ii
], argv
[ii
]))
1269 /* Check that we have no more pre-existing arguments. */
1270 if (iauth
->i_argv
[ii
])
1272 /* If they are the same and still connected, clear the "closing" flag and exit.*/
1273 if (same
&& i_GetConnected(iauth
)) {
1274 IAuthClr(iauth
, IAUTH_CLOSING
);
1277 /* Deallocate old argv elements. */
1278 for (ii
= 0; iauth
->i_argv
[ii
]; ++ii
)
1279 MyFree(iauth
->i_argv
[ii
]);
1280 MyFree(iauth
->i_argv
);
1283 /* Need to initialize a new connection. */
1284 iauth
= MyCalloc(1, sizeof(*iauth
));
1285 msgq_init(i_sendQ(iauth
));
1286 /* Populate iauth's argv array. */
1287 iauth
->i_argv
= MyCalloc(argc
+ 1, sizeof(iauth
->i_argv
[0]));
1288 for (ii
= 0; ii
< argc
; ++ii
)
1289 DupString(iauth
->i_argv
[ii
], argv
[ii
]);
1290 iauth
->i_argv
[ii
] = NULL
;
1291 /* Try to spawn it, and handle the results. */
1292 if (iauth_do_spawn(iauth
, 0))
1294 IAuthClr(iauth
, IAUTH_CLOSING
);
1298 /** Mark all %IAuth connections as closing. */
1299 void auth_mark_closing(void)
1302 IAuthSet(iauth
, IAUTH_CLOSING
);
1305 /** Complete disconnection of an %IAuth connection.
1306 * @param[in] iauth %Connection to fully close.
1308 static void iauth_disconnect(struct IAuth
*iauth
)
1310 if (!i_GetConnected(iauth
))
1313 /* Close main socket. */
1314 close(s_fd(i_socket(iauth
)));
1315 socket_del(i_socket(iauth
));
1316 s_fd(i_socket(iauth
)) = -1;
1318 /* Close error socket. */
1319 close(s_fd(i_stderr(iauth
)));
1320 socket_del(i_stderr(iauth
));
1321 s_fd(i_stderr(iauth
)) = -1;
1324 /** Close all %IAuth connections marked as closing. */
1325 void auth_close_unused(void)
1327 if (IAuthHas(iauth
, IAUTH_CLOSING
)) {
1329 iauth_disconnect(iauth
);
1330 if (iauth
->i_argv
) {
1331 for (ii
= 0; iauth
->i_argv
[ii
]; ++ii
)
1332 MyFree(iauth
->i_argv
[ii
]);
1333 MyFree(iauth
->i_argv
);
1339 /** Send queued output to \a iauth.
1340 * @param[in] iauth Writable connection with queued data.
1342 static void iauth_write(struct IAuth
*iauth
)
1344 unsigned int bytes_tried
, bytes_sent
;
1347 if (IAuthHas(iauth
, IAUTH_BLOCKED
))
1349 while (MsgQLength(i_sendQ(iauth
)) > 0) {
1350 iores
= os_sendv_nonb(s_fd(i_socket(iauth
)), i_sendQ(iauth
), &bytes_tried
, &bytes_sent
);
1353 msgq_delete(i_sendQ(iauth
), bytes_sent
);
1354 iauth
->i_sendB
+= bytes_sent
;
1355 if (bytes_tried
== bytes_sent
)
1357 /* If bytes_sent < bytes_tried, fall through to IO_BLOCKED. */
1359 IAuthSet(iauth
, IAUTH_BLOCKED
);
1360 socket_events(i_socket(iauth
), SOCK_ACTION_ADD
| SOCK_EVENT_WRITABLE
);
1363 iauth_disconnect(iauth
);
1367 /* We were able to flush all events, so remove notification. */
1368 socket_events(i_socket(iauth
), SOCK_ACTION_DEL
| SOCK_EVENT_WRITABLE
);
1371 /** Send a message to iauth.
1372 * @param[in] cptr Optional client context for message.
1373 * @param[in] format Format string for message.
1374 * @return Non-zero on successful send or buffering, zero on failure.
1376 static int sendto_iauth(struct Client
*cptr
, const char *format
, ...)
1381 /* Do not send requests when we have no iauth. */
1382 if (!i_GetConnected(iauth
))
1384 /* Do not send for clients in the NORMAL state. */
1386 && (format
[0] != 'D')
1387 && (!cli_auth(cptr
) || !FlagHas(&cli_auth(cptr
)->flags
, AR_IAUTH_PENDING
)))
1390 /* Build the message buffer. */
1391 vd
.vd_format
= format
;
1392 va_start(vd
.vd_args
, format
);
1394 mb
= msgq_make(NULL
, "-1 %v", &vd
);
1396 mb
= msgq_make(NULL
, "%d %v", cli_fd(cptr
), &vd
);
1399 /* Tack it onto the iauth sendq and try to write it. */
1401 msgq_add(i_sendQ(iauth
), mb
, 0);
1406 /** Send text to interested operators (SNO_AUTH server notice).
1407 * @param[in] iauth Active IAuth session.
1408 * @param[in] cli Client referenced by command.
1409 * @param[in] parc Number of parameters (1).
1410 * @param[in] params Text to send.
1413 static int iauth_cmd_snotice(struct IAuth
*iauth
, struct Client
*cli
,
1414 int parc
, char **params
)
1416 sendto_opmask_butone(NULL
, SNO_AUTH
, "%s", params
[0]);
1420 /** Set the debug level for the session.
1421 * @param[in] iauth Active IAuth session.
1422 * @param[in] cli Client referenced by command.
1423 * @param[in] parc Number of parameters (1).
1424 * @param[in] params String starting with an integer.
1427 static int iauth_cmd_debuglevel(struct IAuth
*iauth
, struct Client
*cli
,
1428 int parc
, char **params
)
1432 new_level
= parc
> 0 ? atoi(params
[0]) : 0;
1433 if (i_debug(iauth
) > 0 || new_level
> 0) {
1434 /* The "ia_dbg" name is borrowed from (IRCnet) ircd. */
1435 sendto_opmask_butone(NULL
, SNO_AUTH
, "ia_dbg = %d", new_level
);
1437 i_debug(iauth
) = new_level
;
1441 /** Set policy options for the session.
1442 * Old policy is forgotten, and any of the following characters in \a
1443 * params enable the corresponding policy:
1444 * \li A IAUTH_ADDLINFO
1445 * \li R IAUTH_REQUIRED
1446 * \li T IAUTH_TIMEOUT
1447 * \li W IAUTH_EXTRAWAIT
1448 * \li U IAUTH_UNDERNET
1450 * @param[in] iauth Active IAuth session.
1451 * @param[in] cli Client referenced by command.
1452 * @param[in] parc Number of parameters (1).
1453 * @param[in] params Zero or more policy options.
1456 static int iauth_cmd_policy(struct IAuth
*iauth
, struct Client
*cli
,
1457 int parc
, char **params
)
1459 enum IAuthFlag flag
;
1462 /* Erase old policy first. */
1463 for (flag
= IAUTH_FIRST_OPTION
; flag
< IAUTH_LAST_FLAG
; ++flag
)
1464 IAuthClr(iauth
, flag
);
1466 if (parc
> 0) /* only try to parse if we were given a policy string */
1467 /* Parse new policy set. */
1468 for (p
= params
[0]; *p
; p
++) switch (*p
) {
1469 case 'A': IAuthSet(iauth
, IAUTH_ADDLINFO
); break;
1470 case 'R': IAuthSet(iauth
, IAUTH_REQUIRED
); break;
1471 case 'T': IAuthSet(iauth
, IAUTH_TIMEOUT
); break;
1472 case 'W': IAuthSet(iauth
, IAUTH_EXTRAWAIT
); break;
1473 case 'U': IAuthSet(iauth
, IAUTH_UNDERNET
); break;
1476 /* Optionally notify operators. */
1477 if (i_debug(iauth
) > 0)
1478 sendto_opmask_butone(NULL
, SNO_AUTH
, "iauth options: %s", params
[0]);
1482 /** Set the iauth program version number.
1483 * @param[in] iauth Active IAuth session.
1484 * @param[in] cli Client referenced by command.
1485 * @param[in] parc Number of parameters (1).
1486 * @param[in] params Version number or name.
1489 static int iauth_cmd_version(struct IAuth
*iauth
, struct Client
*cli
,
1490 int parc
, char **params
)
1492 MyFree(iauth
->i_version
);
1493 DupString(iauth
->i_version
, parc
> 0 ? params
[0] : "<NONE>");
1494 sendto_opmask_butone(NULL
, SNO_AUTH
, "iauth version %s running.",
1499 /** Paste a parameter list together into a single string.
1500 * @param[in] parc Number of parameters.
1501 * @param[in] params Parameter list to paste together.
1502 * @return Pasted parameter list.
1504 static char *paste_params(int parc
, char **params
)
1507 int len
= 0, lengths
[MAXPARA
], i
;
1509 /* Compute the length... */
1510 for (i
= 0; i
< parc
; i
++)
1511 len
+= lengths
[i
] = strlen(params
[i
]);
1513 /* Allocate memory, accounting for string lengths, spaces (parc - 1), a
1514 * sentinel, and the trailing \0
1516 str
= MyMalloc(len
+ parc
+ 1);
1518 /* Build the pasted string */
1519 for (tmp
= str
, i
= 0; i
< parc
; i
++) {
1520 if (i
) /* add space separator... */
1522 if (i
== parc
- 1) /* add colon sentinel */
1525 /* Copy string component... */
1526 memcpy(tmp
, params
[i
], lengths
[i
]);
1527 tmp
+= lengths
[i
]; /* move to end of string */
1530 /* terminate the string... */
1533 return str
; /* return the pasted string */
1536 /** Clear cached iauth configuration information.
1537 * @param[in] iauth Active IAuth session.
1538 * @param[in] cli Client referenced by command.
1539 * @param[in] parc Number of parameters (0).
1540 * @param[in] params Parameter list (ignored).
1543 static int iauth_cmd_newconfig(struct IAuth
*iauth
, struct Client
*cli
,
1544 int parc
, char **params
)
1549 head
= iauth
->i_config
;
1550 iauth
->i_config
= NULL
;
1551 for (; head
; head
= next
) {
1553 MyFree(head
->value
.cp
);
1556 sendto_opmask_butone(NULL
, SNO_AUTH
, "New iauth configuration.");
1560 /** Append iauth configuration information.
1561 * @param[in] iauth Active IAuth session.
1562 * @param[in] cli Client referenced by command.
1563 * @param[in] parc Number of parameters.
1564 * @param[in] params Description of configuration element.
1567 static int iauth_cmd_config(struct IAuth
*iauth
, struct Client
*cli
,
1568 int parc
, char **params
)
1572 if (iauth
->i_config
) {
1573 for (node
= iauth
->i_config
; node
->next
; node
= node
->next
) ;
1574 node
= node
->next
= make_link();
1576 node
= iauth
->i_config
= make_link();
1578 node
->value
.cp
= paste_params(parc
, params
);
1579 node
->next
= 0; /* must be explicitly cleared */
1583 /** Clear cached iauth configuration information.
1584 * @param[in] iauth Active IAuth session.
1585 * @param[in] cli Client referenced by command.
1586 * @param[in] parc Number of parameters (0).
1587 * @param[in] params Parameter list (ignored).
1590 static int iauth_cmd_newstats(struct IAuth
*iauth
, struct Client
*cli
,
1591 int parc
, char **params
)
1596 head
= iauth
->i_stats
;
1597 iauth
->i_stats
= NULL
;
1598 for (; head
; head
= next
) {
1600 MyFree(head
->value
.cp
);
1603 sendto_opmask_butone(NULL
, SNO_AUTH
, "New iauth statistics.");
1607 /** Append iauth statistics information.
1608 * @param[in] iauth Active IAuth session.
1609 * @param[in] cli Client referenced by command.
1610 * @param[in] parc Number of parameters.
1611 * @param[in] params Statistics element.
1614 static int iauth_cmd_stats(struct IAuth
*iauth
, struct Client
*cli
,
1615 int parc
, char **params
)
1618 if (iauth
->i_stats
) {
1619 for (node
= iauth
->i_stats
; node
->next
; node
= node
->next
) ;
1620 node
= node
->next
= make_link();
1622 node
= iauth
->i_stats
= make_link();
1624 node
->value
.cp
= paste_params(parc
, params
);
1625 node
->next
= 0; /* must be explicitly cleared */
1629 /** Set client's username to a trusted string even if it breaks the rules.
1630 * @param[in] iauth Active IAuth session.
1631 * @param[in] cli Client referenced by command.
1632 * @param[in] parc Number of parameters (1).
1633 * @param[in] params Forced username.
1636 static int iauth_cmd_username_forced(struct IAuth
*iauth
, struct Client
*cli
,
1637 int parc
, char **params
)
1639 assert(cli_auth(cli
) != NULL
);
1640 FlagClr(&cli_auth(cli
)->flags
, AR_AUTH_PENDING
);
1641 if (!EmptyString(params
[0])) {
1642 ircd_strncpy(cli_username(cli
), params
[0], USERLEN
);
1644 FlagSet(&cli_auth(cli
)->flags
, AR_IAUTH_USERNAME
);
1645 FlagSet(&cli_auth(cli
)->flags
, AR_IAUTH_FUSERNAME
);
1650 /** Set client's username to a trusted string.
1651 * @param[in] iauth Active IAuth session.
1652 * @param[in] cli Client referenced by command.
1653 * @param[in] parc Number of parameters (1).
1654 * @param[in] params Trusted username.
1657 static int iauth_cmd_username_good(struct IAuth
*iauth
, struct Client
*cli
,
1658 int parc
, char **params
)
1660 assert(cli_auth(cli
) != NULL
);
1661 FlagClr(&cli_auth(cli
)->flags
, AR_AUTH_PENDING
);
1662 if (!EmptyString(params
[0])) {
1663 ircd_strncpy(cli_username(cli
), params
[0], USERLEN
);
1665 FlagSet(&cli_auth(cli
)->flags
, AR_IAUTH_USERNAME
);
1670 /** Set client's username to an untrusted string.
1671 * @param[in] iauth Active IAuth session.
1672 * @param[in] cli Client referenced by command.
1673 * @param[in] parc Number of parameters (1).
1674 * @param[in] params Untrusted username.
1677 static int iauth_cmd_username_bad(struct IAuth
*iauth
, struct Client
*cli
,
1678 int parc
, char **params
)
1680 assert(cli_auth(cli
) != NULL
);
1681 FlagClr(&cli_auth(cli
)->flags
, AR_AUTH_PENDING
);
1682 if (!EmptyString(params
[0]))
1683 ircd_strncpy(cli_user(cli
)->username
, params
[0], USERLEN
);
1687 /** Set client's hostname.
1688 * @param[in] iauth Active IAuth session.
1689 * @param[in] cli Client referenced by command.
1690 * @param[in] parc Number of parameters (1).
1691 * @param[in] params New hostname for client.
1692 * @return Non-zero if \a cli authorization should be checked for completion.
1694 static int iauth_cmd_hostname(struct IAuth
*iauth
, struct Client
*cli
,
1695 int parc
, char **params
)
1697 struct AuthRequest
*auth
;
1699 if (EmptyString(params
[0])) {
1700 sendto_iauth(cli
, "E Missing :Missing hostname parameter");
1704 auth
= cli_auth(cli
);
1705 assert(auth
!= NULL
);
1707 /* If a DNS request is pending, abort it. */
1708 if (FlagHas(&auth
->flags
, AR_DNS_PENDING
)) {
1709 FlagClr(&auth
->flags
, AR_DNS_PENDING
);
1710 delete_resolver_queries(auth
);
1711 if (IsUserPort(cli
))
1712 sendheader(cli
, REPORT_FIN_DNS
);
1714 /* Set hostname from params. */
1715 ircd_strncpy(cli_sockhost(cli
), params
[0], HOSTLEN
);
1719 /** Set client's IP address.
1720 * @param[in] iauth Active IAuth session.
1721 * @param[in] cli Client referenced by command.
1722 * @param[in] parc Number of parameters (1).
1723 * @param[in] params New IP address for client in dotted quad or
1724 * standard IPv6 format.
1727 static int iauth_cmd_ip_address(struct IAuth
*iauth
, struct Client
*cli
,
1728 int parc
, char **params
)
1730 struct irc_in_addr addr
;
1731 struct AuthRequest
*auth
;
1733 if (EmptyString(params
[0])) {
1734 sendto_iauth(cli
, "E Missing :Missing IP address parameter");
1738 /* Get AuthRequest for client. */
1739 auth
= cli_auth(cli
);
1740 assert(auth
!= NULL
);
1742 /* Parse the client's new IP address. */
1743 if (!ircd_aton(&addr
, params
[0])) {
1744 sendto_iauth(cli
, "E Invalid :Unable to parse IP address [%s]", params
[0]);
1748 /* If this is the first IP override, save the client's original
1749 * address in case we get a DNS response later.
1751 if (!irc_in_addr_valid(&auth
->original
))
1752 memcpy(&auth
->original
, &cli_ip(cli
), sizeof(auth
->original
));
1754 /* Undo original IP connection in IPcheck. */
1755 IPcheck_connect_fail(cli
);
1756 ClearIPChecked(cli
);
1758 /* Update the IP and charge them as a remote connect. */
1759 memcpy(&cli_ip(cli
), &addr
, sizeof(cli_ip(cli
)));
1760 IPcheck_remote_connect(cli
, 0);
1765 /** Find a ConfItem structure for a named connection class.
1766 * @param[in] class_name Name of configuration class to find.
1767 * @return A ConfItem of type CONF_CLIENT for the class, or NULL on failure.
1769 static struct ConfItem
*auth_find_class_conf(const char *class_name
)
1771 static struct ConfItem
*aconf_list
;
1772 struct ConnectionClass
*class;
1773 struct ConfItem
*aconf
;
1775 /* Make sure the configuration class is valid. */
1776 class = find_class(class_name
);
1780 /* Look for an existing ConfItem for the class. */
1781 for (aconf
= aconf_list
; aconf
; aconf
= aconf
->next
)
1782 if (aconf
->conn_class
== class)
1785 /* If no ConfItem, create one. */
1787 aconf
= make_conf(CONF_CLIENT
);
1789 sendto_opmask_butone(NULL
, SNO_AUTH
,
1790 "Unable to allocate ConfItem for class %s!",
1794 aconf
->conn_class
= class;
1795 aconf
->next
= aconf_list
;
1802 /** Accept a client in IAuth.
1803 * @param[in] iauth Active IAuth session.
1804 * @param[in] cli Client referenced by command.
1805 * @param[in] parc Number of parameters.
1806 * @param[in] params Optional class name for client.
1809 static int iauth_cmd_done_client(struct IAuth
*iauth
, struct Client
*cli
,
1810 int parc
, char **params
)
1812 static time_t warn_time
;
1814 /* Clear iauth pending flag. */
1815 assert(cli_auth(cli
) != NULL
);
1816 FlagClr(&cli_auth(cli
)->flags
, AR_IAUTH_PENDING
);
1818 /* If a connection class was specified (and usable), assign the client to it. */
1819 if (!EmptyString(params
[0])) {
1820 struct ConfItem
*aconf
;
1822 aconf
= auth_find_class_conf(params
[0]);
1824 attach_conf(cli
, aconf
);
1826 sendto_opmask_butone_ratelimited(NULL
, SNO_AUTH
, &warn_time
,
1827 "iauth tried to use undefined class [%s]",
1834 /** Accept a client in IAuth and assign them to an account.
1835 * @param[in] iauth Active IAuth session.
1836 * @param[in] cli Client referenced by command.
1837 * @param[in] parc Number of parameters.
1838 * @param[in] params Account name and optional class name for client.
1839 * @return Non-zero if \a cli authorization should be checked for completion.
1841 static int iauth_cmd_done_account(struct IAuth
*iauth
, struct Client
*cli
,
1842 int parc
, char **params
)
1847 if (EmptyString(params
[0])) {
1848 sendto_iauth(cli
, "E Missing :Missing account parameter");
1851 /* Check length of account name. */
1852 len
= strcspn(params
[0], ": ");
1853 if (len
> ACCOUNTLEN
) {
1854 sendto_iauth(cli
, "E Invalid :Account parameter too long");
1857 /* If account has a creation timestamp, use it. */
1858 assert(cli_user(cli
) != NULL
);
1859 if (params
[0][len
] == ':') {
1861 cli_user(cli
)->acc_create
= strtoul(params
[0] + len
+ 1, &end
, 10);
1863 cli_user(cli
)->acc_id
= strtoul(end
, NULL
, 10);
1866 /* Copy account name to User structure. */
1867 ircd_strncpy(cli_user(cli
)->account
, params
[0], ACCOUNTLEN
);
1870 /* Fall through to the normal "done" handler. */
1871 return iauth_cmd_done_client(iauth
, cli
, parc
- 1, params
+ 1);
1874 /** Reject a client's connection.
1875 * @param[in] iauth Active IAuth session.
1876 * @param[in] cli Client referenced by command.
1877 * @param[in] parc Number of parameters (1).
1878 * @param[in] params Optional kill message.
1881 static int iauth_cmd_kill(struct IAuth
*iauth
, struct Client
*cli
,
1882 int parc
, char **params
)
1885 FlagClr(&cli_auth(cli
)->flags
, AR_IAUTH_PENDING
);
1886 if (EmptyString(params
[0]))
1887 params
[0] = "Access denied";
1888 exit_client(cli
, cli
, &me
, params
[0]);
1892 /** Send a challenge string to the client.
1893 * @param[in] iauth Active IAuth session.
1894 * @param[in] cli Client referenced by command.
1895 * @param[in] parc Number of parameters (1).
1896 * @param[in] params Challenge message for client.
1899 static int iauth_cmd_challenge(struct IAuth
*iauth
, struct Client
*cli
,
1900 int parc
, char **params
)
1902 if (!EmptyString(params
[0]))
1903 sendrawto_one(cli
, "NOTICE AUTH :*** %s", params
[0]);
1907 /** Parse a \a message from \a iauth.
1908 * @param[in] iauth Active IAuth session.
1909 * @param[in] message Message to be parsed.
1911 static void iauth_parse(struct IAuth
*iauth
, char *message
)
1913 char *params
[MAXPARA
+ 1]; /* leave space for NULL */
1915 iauth_cmd_handler handler
;
1916 struct AuthRequest
*auth
;
1921 /* Find command handler... */
1922 switch (*(message
++)) {
1923 case '>': handler
= iauth_cmd_snotice
; has_cli
= 0; break;
1924 case 'G': handler
= iauth_cmd_debuglevel
; has_cli
= 0; break;
1925 case 'O': handler
= iauth_cmd_policy
; has_cli
= 0; break;
1926 case 'V': handler
= iauth_cmd_version
; has_cli
= 0; break;
1927 case 'a': handler
= iauth_cmd_newconfig
; has_cli
= 0; break;
1928 case 'A': handler
= iauth_cmd_config
; has_cli
= 0; break;
1929 case 's': handler
= iauth_cmd_newstats
; has_cli
= 0; break;
1930 case 'S': handler
= iauth_cmd_stats
; has_cli
= 0; break;
1931 case 'o': handler
= iauth_cmd_username_forced
; has_cli
= 1; break;
1932 case 'U': handler
= iauth_cmd_username_good
; has_cli
= 1; break;
1933 case 'u': handler
= iauth_cmd_username_bad
; has_cli
= 1; break;
1934 case 'N': handler
= iauth_cmd_hostname
; has_cli
= 1; break;
1935 case 'I': handler
= iauth_cmd_ip_address
; has_cli
= 1; break;
1936 case 'C': handler
= iauth_cmd_challenge
; has_cli
= 1; break;
1937 case 'D': handler
= iauth_cmd_done_client
; has_cli
= 1; break;
1938 case 'R': handler
= iauth_cmd_done_account
; has_cli
= 1; break;
1939 case 'k': /* The 'k' command indicates the user should be booted
1940 * off without telling opers. There is no way to
1941 * signal that to exit_client(), so we fall through to
1942 * the case that we do implement.
1944 case 'K': handler
= iauth_cmd_kill
; has_cli
= 2; break;
1945 case 'r': /* we handle termination directly */ return;
1946 default: sendto_iauth(NULL
, "E Garbage :[%s]", message
); return;
1949 while (parc
< MAXPARA
) {
1950 while (IsSpace(*message
)) /* skip leading whitespace */
1953 if (!*message
) /* hit the end of the string, break out */
1956 if (*message
== ':') { /* found sentinel... */
1957 params
[parc
++] = message
+ 1;
1958 break; /* it's the last parameter anyway */
1961 params
[parc
++] = message
; /* save the parameter */
1962 while (*message
&& !IsSpace(*message
))
1963 message
++; /* find the end of the parameter */
1965 if (*message
) /* terminate the parameter */
1966 *(message
++) = '\0';
1969 params
[parc
] = NULL
; /* terminate the parameter list */
1971 /* Check to see if the command specifies a client... */
1973 /* Handler does not need a client. */
1974 handler(iauth
, NULL
, parc
, params
);
1976 /* Try to find the client associated with the request. */
1977 id
= strtol(params
[0], NULL
, 10);
1978 if (id
< 0 || id
> HighestFd
|| !(cli
= LocalClientArray
[id
]))
1979 /* Client no longer exists (or never existed). */
1980 sendto_iauth(NULL
, "E Gone :[%s %s %s]", params
[0], params
[1],
1982 else if ((!(auth
= cli_auth(cli
)) ||
1983 !FlagHas(&auth
->flags
, AR_IAUTH_PENDING
)) &&
1985 /* Client is done with IAuth checks. */
1986 sendto_iauth(cli
, "E Done :[%s %s %s]", params
[0], params
[1], params
[2]);
1988 struct irc_sockaddr addr
;
1991 /* Parse IP address and port number from parameters */
1992 res
= ipmask_parse(params
[1], &addr
.addr
, NULL
);
1993 addr
.port
= strtol(params
[2], NULL
, 10);
1995 /* Check IP address and port number against expected. */
1997 irc_in_addr_cmp(&addr
.addr
, &cli_ip(cli
)) ||
1998 (auth
&& addr
.port
!= auth
->port
))
1999 /* Report mismatch to iauth. */
2000 sendto_iauth(cli
, "E Mismatch :[%s] != [%s]", params
[1],
2001 ircd_ntoa(&cli_ip(cli
)));
2002 else if (handler(iauth
, cli
, parc
- 3, params
+ 3))
2003 /* Handler indicated a possible state change. */
2004 check_auth_finished(auth
);
2009 /** Read input from \a iauth.
2010 * Reads up to SERVER_TCP_WINDOW bytes per pass.
2011 * @param[in] iauth Readable connection.
2013 static void iauth_read(struct IAuth
*iauth
)
2015 static char readbuf
[SERVER_TCP_WINDOW
];
2016 unsigned int length
, count
;
2020 /* Copy partial data to readbuf, append new data. */
2021 length
= iauth
->i_count
;
2022 memcpy(readbuf
, iauth
->i_buffer
, length
);
2023 if (IO_SUCCESS
!= os_recv_nonb(s_fd(i_socket(iauth
)),
2025 sizeof(readbuf
) - length
- 1,
2028 readbuf
[length
+= count
] = '\0';
2030 /* Parse each complete line. */
2031 for (sol
= readbuf
; (eol
= strchr(sol
, '\n')) != NULL
; sol
= eol
+ 1) {
2033 if (*(eol
- 1) == '\r') /* take out carriage returns, too... */
2036 /* If spammy debug, send the message to opers. */
2037 if (i_debug(iauth
) > 1)
2038 sendto_opmask_butone(NULL
, SNO_AUTH
, "Parsing: \"%s\"", sol
);
2040 /* Parse the line... */
2041 iauth_parse(iauth
, sol
);
2044 /* Put unused data back into connection's buffer. */
2045 iauth
->i_count
= strlen(sol
);
2046 if (iauth
->i_count
> BUFSIZE
)
2047 iauth
->i_count
= BUFSIZE
;
2048 memcpy(iauth
->i_buffer
, sol
, iauth
->i_count
);
2051 /** Handle socket activity for an %IAuth connection.
2052 * @param[in] ev &Socket event; the IAuth connection is the user data
2053 * pointer for the socket.
2055 static void iauth_sock_callback(struct Event
*ev
)
2057 struct IAuth
*iauth
;
2059 assert(0 != ev_socket(ev
));
2060 iauth
= (struct IAuth
*) s_data(ev_socket(ev
));
2063 switch (ev_type(ev
)) {
2065 /* Hm, what happened here? */
2066 if (!IAuthHas(iauth
, IAUTH_CLOSING
))
2067 iauth_do_spawn(iauth
, 1);
2073 IAuthClr(iauth
, IAUTH_BLOCKED
);
2077 log_write(LS_IAUTH
, L_ERROR
, 0, "IAuth socket error: %s", strerror(ev_data(ev
)));
2078 /* and fall through to the ET_EOF case */
2080 iauth_disconnect(iauth
);
2083 assert(0 && "Unrecognized event type");
2088 /** Read error input from \a iauth.
2089 * @param[in] iauth Readable connection.
2091 static void iauth_read_stderr(struct IAuth
*iauth
)
2093 static char readbuf
[SERVER_TCP_WINDOW
];
2094 unsigned int length
, count
;
2098 /* Copy partial data to readbuf, append new data. */
2099 length
= iauth
->i_errcount
;
2100 memcpy(readbuf
, iauth
->i_errbuf
, length
);
2101 if (IO_SUCCESS
!= os_recv_nonb(s_fd(i_stderr(iauth
)),
2103 sizeof(readbuf
) - length
- 1,
2106 readbuf
[length
+= count
] = '\0';
2108 /* Send each complete line to SNO_AUTH. */
2109 for (sol
= readbuf
; (eol
= strchr(sol
, '\n')) != NULL
; sol
= eol
+ 1) {
2111 if (*(eol
- 1) == '\r') /* take out carriage returns, too... */
2113 Debug((DEBUG_ERROR
, "IAuth error: %s", sol
));
2114 log_write(LS_IAUTH
, L_ERROR
, 0, "IAuth error: %s", sol
);
2115 sendto_opmask_butone(NULL
, SNO_AUTH
, "%s", sol
);
2118 /* Put unused data back into connection's buffer. */
2119 iauth
->i_errcount
= strlen(sol
);
2120 if (iauth
->i_errcount
> BUFSIZE
)
2121 iauth
->i_errcount
= BUFSIZE
;
2122 memcpy(iauth
->i_errbuf
, sol
, iauth
->i_errcount
);
2125 /** Handle error socket activity for an %IAuth connection.
2126 * @param[in] ev &Socket event; the IAuth connection is the user data
2127 * pointer for the socket.
2129 static void iauth_stderr_callback(struct Event
*ev
)
2131 struct IAuth
*iauth
;
2133 assert(0 != ev_socket(ev
));
2134 iauth
= (struct IAuth
*) s_data(ev_socket(ev
));
2137 switch (ev_type(ev
)) {
2139 iauth_read_stderr(iauth
);
2142 log_write(LS_IAUTH
, L_ERROR
, 0, "IAuth stderr error: %s", strerror(ev_data(ev
)));
2143 /* and fall through to the ET_EOF/ET_DESTROY case */
2148 assert(0 && "Unrecognized event type");
2153 /** Report active iauth's configuration to \a cptr.
2154 * @param[in] cptr Client requesting statistics.
2155 * @param[in] sd Stats descriptor for request.
2156 * @param[in] param Extra parameter from user (may be NULL).
2158 void report_iauth_conf(struct Client
*cptr
, const struct StatDesc
*sd
, char *param
)
2162 if (iauth
) for (link
= iauth
->i_config
; link
; link
= link
->next
)
2164 send_reply(cptr
, SND_EXPLICIT
| RPL_STATSDEBUG
, ":%s",
2167 send_reply(cptr
, SND_EXPLICIT
| RPL_STATSDEBUG
, ":End of IAuth configuration.");
2170 /** Report active iauth's statistics to \a cptr.
2171 * @param[in] cptr Client requesting statistics.
2172 * @param[in] sd Stats descriptor for request.
2173 * @param[in] param Extra parameter from user (may be NULL).
2175 void report_iauth_stats(struct Client
*cptr
, const struct StatDesc
*sd
, char *param
)
2179 if (iauth
) for (link
= iauth
->i_stats
; link
; link
= link
->next
)
2181 send_reply(cptr
, SND_EXPLICIT
| RPL_STATSDEBUG
, ":%s",
2184 send_reply(cptr
, SND_EXPLICIT
| RPL_STATSDEBUG
, ":End of IAuth statistics.");