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.
43 static int mr_authenticate(struct Client
*, struct Client
*, int, const char **);
44 static int me_sasl(struct Client
*, struct Client
*, int, const char **);
46 static void abort_sasl(struct Client
*);
47 static void abort_sasl_exit(hook_data_client_exit
*);
49 struct Message authenticate_msgtab
= {
50 "AUTHENTICATE", 0, 0, 0, MFLG_SLOW
,
51 {{mr_authenticate
, 2}, mg_reg
, mg_ignore
, mg_ignore
, mg_ignore
, mg_reg
}
53 struct Message sasl_msgtab
= {
54 "SASL", 0, 0, 0, MFLG_SLOW
,
55 {mg_ignore
, mg_ignore
, mg_ignore
, mg_ignore
, {me_sasl
, 5}, mg_ignore
}
58 mapi_clist_av1 sasl_clist
[] = {
59 &authenticate_msgtab
, &sasl_msgtab
, NULL
61 mapi_hfn_list_av1 sasl_hfnlist
[] = {
62 { "new_local_user", (hookfn
) abort_sasl
},
63 { "client_exit", (hookfn
) abort_sasl_exit
},
67 DECLARE_MODULE_AV1(sasl
, NULL
, NULL
, sasl_clist
, NULL
, sasl_hfnlist
, "$Revision: 1409 $");
70 mr_authenticate(struct Client
*client_p
, struct Client
*source_p
,
71 int parc
, const char *parv
[])
73 struct Client
*agent_p
= NULL
;
75 /* They really should use CAP for their own sake. */
76 if(!IsCapable(source_p
, CLICAP_SASL
))
79 if (strlen(client_p
->id
) == 3)
81 exit_client(client_p
, client_p
, client_p
, "Mixing client and server protocol");
85 if(source_p
->preClient
->sasl_complete
)
87 sendto_one(source_p
, form_str(ERR_SASLALREADY
), me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
);
91 if(strlen(parv
[1]) > 400)
93 sendto_one(source_p
, form_str(ERR_SASLTOOLONG
), me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
);
100 strcpy(source_p
->id
, generate_uid());
101 add_to_id_hash(source_p
->id
, source_p
);
104 if(*source_p
->preClient
->sasl_agent
)
105 agent_p
= find_id(source_p
->preClient
->sasl_agent
);
108 sendto_server(NULL
, NULL
, CAP_TS6
|CAP_ENCAP
, NOCAPS
, ":%s ENCAP * SASL %s * S %s", me
.id
,
109 source_p
->id
, parv
[1]);
111 sendto_one(agent_p
, ":%s ENCAP %s SASL %s %s C %s", me
.id
, agent_p
->servptr
->name
,
112 source_p
->id
, agent_p
->id
, parv
[1]);
113 source_p
->preClient
->sasl_out
++;
119 me_sasl(struct Client
*client_p
, struct Client
*source_p
,
120 int parc
, const char *parv
[])
122 struct Client
*target_p
, *agent_p
;
124 /* Let propagate if not addressed to us, or if broadcast.
125 * Only SASL agents can answer global requests.
127 if(strncmp(parv
[2], me
.id
, 3))
130 if((target_p
= find_id(parv
[2])) == NULL
)
133 if(target_p
->preClient
== NULL
)
136 if((agent_p
= find_id(parv
[1])) == NULL
)
139 if(source_p
!= agent_p
->servptr
) /* WTF?! */
142 /* We only accept messages from SASL agents; these must have umode +S
143 * (so the server must be listed in a service{} block).
145 if(!IsService(agent_p
))
148 /* Reject if someone has already answered. */
149 if(*target_p
->preClient
->sasl_agent
&& strncmp(parv
[1], target_p
->preClient
->sasl_agent
, IDLEN
))
151 else if(!*target_p
->preClient
->sasl_agent
)
152 rb_strlcpy(target_p
->preClient
->sasl_agent
, parv
[1], IDLEN
);
155 sendto_one(target_p
, "AUTHENTICATE %s", parv
[4]);
156 else if(*parv
[3] == 'D')
159 sendto_one(target_p
, form_str(ERR_SASLFAIL
), me
.name
, EmptyString(target_p
->name
) ? "*" : target_p
->name
);
160 else if(*parv
[4] == 'S') {
161 sendto_one(target_p
, form_str(RPL_SASLSUCCESS
), me
.name
, EmptyString(target_p
->name
) ? "*" : target_p
->name
);
162 target_p
->preClient
->sasl_complete
= 1;
163 ServerStats
.is_ssuc
++;
165 *target_p
->preClient
->sasl_agent
= '\0'; /* Blank the stored agent so someone else can answer */
171 /* If the client never finished authenticating but is
172 * registering anyway, abort the exchange.
175 abort_sasl(struct Client
*data
)
177 if(data
->preClient
->sasl_out
== 0 || data
->preClient
->sasl_complete
)
180 data
->preClient
->sasl_out
= data
->preClient
->sasl_complete
= 0;
181 ServerStats
.is_sbad
++;
184 sendto_one(data
, form_str(ERR_SASLABORTED
), me
.name
, EmptyString(data
->name
) ? "*" : data
->name
);
186 if(*data
->preClient
->sasl_agent
)
188 struct Client
*agent_p
= find_id(data
->preClient
->sasl_agent
);
191 sendto_one(agent_p
, ":%s ENCAP %s SASL %s %s D A", me
.id
, agent_p
->servptr
->name
,
192 data
->id
, agent_p
->id
);
197 sendto_server(NULL
, NULL
, CAP_TS6
|CAP_ENCAP
, NOCAPS
, ":%s ENCAP * SASL %s * D A", me
.id
,
202 abort_sasl_exit(hook_data_client_exit
*data
)
204 if (data
->target
->preClient
)
205 abort_sasl(data
->target
);