2 * Copyright (C) 2006 Michael Tharp <gxti@partiallystapled.com>
3 * Copyright (C) 2006 charybdis development team
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
9 * 1.Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * 2.Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3.The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
29 * $Id: m_sasl.c 1409 2006-05-21 14:46:17Z jilles $
44 static int mr_authenticate(struct Client
*, struct Client
*, int, const char **);
45 static int me_sasl(struct Client
*, struct Client
*, int, const char **);
47 static void abort_sasl(struct Client
*);
48 static void abort_sasl_exit(hook_data_client_exit
*);
50 struct Message authenticate_msgtab
= {
51 "AUTHENTICATE", 0, 0, 0, MFLG_SLOW
,
52 {{mr_authenticate
, 2}, mg_reg
, mg_ignore
, mg_ignore
, mg_ignore
, mg_reg
}
54 struct Message sasl_msgtab
= {
55 "SASL", 0, 0, 0, MFLG_SLOW
,
56 {mg_ignore
, mg_ignore
, mg_ignore
, mg_ignore
, {me_sasl
, 5}, mg_ignore
}
59 mapi_clist_av1 sasl_clist
[] = {
60 &authenticate_msgtab
, &sasl_msgtab
, NULL
62 mapi_hfn_list_av1 sasl_hfnlist
[] = {
63 { "new_local_user", (hookfn
) abort_sasl
},
64 { "client_exit", (hookfn
) abort_sasl_exit
},
68 DECLARE_MODULE_AV1(sasl
, NULL
, NULL
, sasl_clist
, NULL
, sasl_hfnlist
, "$Revision: 1409 $");
71 mr_authenticate(struct Client
*client_p
, struct Client
*source_p
,
72 int parc
, const char *parv
[])
74 struct Client
*agent_p
= NULL
;
76 /* They really should use CAP for their own sake. */
77 if(!IsCapable(source_p
, CLICAP_SASL
))
80 if (strlen(client_p
->id
) == 3)
82 exit_client(client_p
, client_p
, client_p
, "Mixing client and server protocol");
86 if(source_p
->preClient
->sasl_complete
)
88 sendto_one(source_p
, form_str(ERR_SASLALREADY
), me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
);
92 if(strlen(parv
[1]) > 400)
94 sendto_one(source_p
, form_str(ERR_SASLTOOLONG
), me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
);
100 /* Allocate a UID. */
101 strcpy(source_p
->id
, generate_uid());
102 add_to_id_hash(source_p
->id
, source_p
);
105 if(*source_p
->preClient
->sasl_agent
)
106 agent_p
= find_id(source_p
->preClient
->sasl_agent
);
109 sendto_server(NULL
, NULL
, CAP_TS6
|CAP_ENCAP
, NOCAPS
, ":%s ENCAP * SASL %s * S %s", me
.id
,
110 source_p
->id
, parv
[1]);
112 sendto_one(agent_p
, ":%s ENCAP %s SASL %s %s C %s", me
.id
, agent_p
->servptr
->name
,
113 source_p
->id
, agent_p
->id
, parv
[1]);
114 source_p
->preClient
->sasl_out
++;
120 me_sasl(struct Client
*client_p
, struct Client
*source_p
,
121 int parc
, const char *parv
[])
123 struct Client
*target_p
, *agent_p
;
125 /* Let propagate if not addressed to us, or if broadcast.
126 * Only SASL agents can answer global requests.
128 if(strncmp(parv
[2], me
.id
, 3))
131 if((target_p
= find_id(parv
[2])) == NULL
)
134 if(target_p
->preClient
== NULL
)
137 if((agent_p
= find_id(parv
[1])) == NULL
)
140 if(source_p
!= agent_p
->servptr
) /* WTF?! */
143 /* We only accept messages from SASL agents; these must have umode +S
144 * (so the server must be listed in a service{} block).
146 if(!IsService(agent_p
))
149 /* Reject if someone has already answered. */
150 if(*target_p
->preClient
->sasl_agent
&& strncmp(parv
[1], target_p
->preClient
->sasl_agent
, IDLEN
))
152 else if(!*target_p
->preClient
->sasl_agent
)
153 rb_strlcpy(target_p
->preClient
->sasl_agent
, parv
[1], IDLEN
);
156 sendto_one(target_p
, "AUTHENTICATE %s", parv
[4]);
157 else if(*parv
[3] == 'D')
160 sendto_one(target_p
, form_str(ERR_SASLFAIL
), me
.name
, EmptyString(target_p
->name
) ? "*" : target_p
->name
);
161 else if(*parv
[4] == 'S') {
162 sendto_one(target_p
, form_str(RPL_SASLSUCCESS
), me
.name
, EmptyString(target_p
->name
) ? "*" : target_p
->name
);
163 target_p
->preClient
->sasl_complete
= 1;
164 ServerStats
.is_ssuc
++;
166 *target_p
->preClient
->sasl_agent
= '\0'; /* Blank the stored agent so someone else can answer */
172 /* If the client never finished authenticating but is
173 * registering anyway, abort the exchange.
176 abort_sasl(struct Client
*data
)
178 if(data
->preClient
->sasl_out
== 0 || data
->preClient
->sasl_complete
)
181 data
->preClient
->sasl_out
= data
->preClient
->sasl_complete
= 0;
182 ServerStats
.is_sbad
++;
185 sendto_one(data
, form_str(ERR_SASLABORTED
), me
.name
, EmptyString(data
->name
) ? "*" : data
->name
);
187 if(*data
->preClient
->sasl_agent
)
189 struct Client
*agent_p
= find_id(data
->preClient
->sasl_agent
);
192 sendto_one(agent_p
, ":%s ENCAP %s SASL %s %s D A", me
.id
, agent_p
->servptr
->name
,
193 data
->id
, agent_p
->id
);
198 sendto_server(NULL
, NULL
, CAP_TS6
|CAP_ENCAP
, NOCAPS
, ":%s ENCAP * SASL %s * D A", me
.id
,
203 abort_sasl_exit(hook_data_client_exit
*data
)
205 if (data
->target
->preClient
)
206 abort_sasl(data
->target
);