1 |
adx |
30 |
/* |
2 |
michael |
2916 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
3 |
adx |
30 |
* |
4 |
michael |
8280 |
* Copyright (c) 1997-2018 ircd-hybrid development team |
5 |
adx |
30 |
* |
6 |
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* This program is free software; you can redistribute it and/or modify |
7 |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
17 |
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* along with this program; if not, write to the Free Software |
18 |
michael |
4564 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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adx |
30 |
* USA |
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*/ |
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|
22 |
michael |
3324 |
/*! \file auth.c |
23 |
michael |
8305 |
* \brief Implementation of DNS and ident lookups. |
24 |
michael |
2916 |
* \version $Id$ |
25 |
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*/ |
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|
27 |
adx |
30 |
/* |
28 |
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* Changes: |
29 |
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* July 6, 1999 - Rewrote most of the code here. When a client connects |
30 |
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* to the server and passes initial socket validation checks, it |
31 |
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* is owned by this module (auth) which returns it to the rest of the |
32 |
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* server when dns and auth queries are finished. Until the client is |
33 |
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* released, the server does not know it exists and does not process |
34 |
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* any messages from it. |
35 |
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* --Bleep Thomas Helvey <tomh@inxpress.net> |
36 |
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*/ |
37 |
michael |
1309 |
|
38 |
adx |
30 |
#include "stdinc.h" |
39 |
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#include "list.h" |
40 |
michael |
1011 |
#include "ircd_defs.h" |
41 |
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#include "fdlist.h" |
42 |
michael |
3324 |
#include "auth.h" |
43 |
michael |
1309 |
#include "conf.h" |
44 |
adx |
30 |
#include "client.h" |
45 |
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#include "event.h" |
46 |
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#include "irc_string.h" |
47 |
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#include "ircd.h" |
48 |
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#include "packet.h" |
49 |
michael |
3322 |
#include "res.h" |
50 |
adx |
30 |
#include "s_bsd.h" |
51 |
michael |
1309 |
#include "log.h" |
52 |
adx |
30 |
#include "send.h" |
53 |
michael |
1654 |
#include "mempool.h" |
54 |
adx |
30 |
|
55 |
michael |
1011 |
|
56 |
michael |
2916 |
enum |
57 |
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{ |
58 |
adx |
30 |
REPORT_DO_DNS, |
59 |
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REPORT_FIN_DNS, |
60 |
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REPORT_FAIL_DNS, |
61 |
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REPORT_DO_ID, |
62 |
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REPORT_FIN_ID, |
63 |
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REPORT_FAIL_ID, |
64 |
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REPORT_IP_MISMATCH, |
65 |
michael |
8216 |
REPORT_HOST_TOOLONG, |
66 |
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REPORT_HOST_INVALID |
67 |
adx |
30 |
}; |
68 |
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|
69 |
michael |
5889 |
static const char *const HeaderMessages[] = |
70 |
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{ |
71 |
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[REPORT_DO_DNS] = ":*** Looking up your hostname", |
72 |
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[REPORT_FIN_DNS] = ":*** Found your hostname", |
73 |
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[REPORT_FAIL_DNS] = ":*** Couldn't look up your hostname", |
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[REPORT_DO_ID] = ":*** Checking Ident", |
75 |
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[REPORT_FIN_ID] = ":*** Got Ident response", |
76 |
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[REPORT_FAIL_ID] = ":*** No Ident response", |
77 |
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[REPORT_IP_MISMATCH] = ":*** Your forward and reverse DNS do not match, ignoring hostname", |
78 |
michael |
8216 |
[REPORT_HOST_TOOLONG] = ":*** Your hostname is too long, ignoring hostname", |
79 |
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[REPORT_HOST_INVALID] = ":*** Your hostname contains illegal characters, ignoring hostname" |
80 |
michael |
5889 |
}; |
81 |
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|
82 |
michael |
8305 |
#define auth_sendheader(c, i) sendto_one_notice((c), &me, "%s", HeaderMessages[(i)]) |
83 |
adx |
30 |
|
84 |
michael |
8338 |
static mp_pool_t *auth_pool; |
85 |
michael |
6477 |
static dlink_list auth_list; |
86 |
adx |
30 |
|
87 |
michael |
4095 |
|
88 |
adx |
30 |
/* |
89 |
michael |
8305 |
* auth_make_request - allocate a new auth request |
90 |
adx |
30 |
*/ |
91 |
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static struct AuthRequest * |
92 |
michael |
8338 |
auth_make(struct Client *client) |
93 |
adx |
30 |
{ |
94 |
michael |
8338 |
struct AuthRequest *auth = mp_pool_get(auth_pool);; |
95 |
adx |
30 |
|
96 |
michael |
8344 |
auth->client->connection->auth = auth; |
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michael |
6689 |
auth->client = client; |
98 |
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auth->timeout = CurrentTime + CONNECTTIMEOUT; |
99 |
michael |
2181 |
|
100 |
michael |
6689 |
return auth; |
101 |
adx |
30 |
} |
102 |
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|
103 |
michael |
8305 |
/*! \brief Release auth client from auth system. This adds the client into the |
104 |
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* local client lists so it can be read by the main io processing loop. |
105 |
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* \param auth Pointer to AuthRequest struct to release |
106 |
adx |
30 |
*/ |
107 |
michael |
8303 |
static void |
108 |
michael |
8305 |
auth_release_client(struct AuthRequest *auth) |
109 |
adx |
30 |
{ |
110 |
michael |
4853 |
struct Client *const client = auth->client; |
111 |
michael |
992 |
|
112 |
|
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if (IsDoingAuth(auth) || IsDNSPending(auth)) |
113 |
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return; |
114 |
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|
115 |
michael |
8338 |
dlinkDelete(&auth->node, &auth_list); |
116 |
michael |
992 |
|
117 |
michael |
8338 |
mp_pool_release(auth); |
118 |
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client->connection->auth = NULL; |
119 |
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|
120 |
adx |
30 |
/* |
121 |
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* When a client has auth'ed, we want to start reading what it sends |
122 |
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* us. This is what read_packet() does. |
123 |
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* -- adrian |
124 |
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*/ |
125 |
michael |
4589 |
client->connection->allow_read = MAX_FLOOD; |
126 |
michael |
8338 |
comm_setflush(client->connection->fd, 1000, flood_recalc, client); |
127 |
michael |
650 |
|
128 |
michael |
4589 |
client->connection->since = CurrentTime; |
129 |
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client->connection->lasttime = CurrentTime; |
130 |
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client->connection->firsttime = CurrentTime; |
131 |
michael |
8297 |
AddFlag(client, FLAGS_FINISHED_AUTH); |
132 |
michael |
650 |
|
133 |
michael |
8213 |
strlcpy(client->realhost, client->host, sizeof(client->realhost)); |
134 |
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|
135 |
michael |
8338 |
read_packet(client->connection->fd, client); |
136 |
adx |
30 |
} |
137 |
michael |
2916 |
|
138 |
michael |
8219 |
/*! Checks if a hostname is valid and doesn't contain illegal characters |
139 |
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* \param hostname The string to verify |
140 |
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* \return 1 if it is valid, 0 if it isn't |
141 |
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*/ |
142 |
michael |
8216 |
static int |
143 |
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auth_verify_hostname(const char *hostname) |
144 |
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{ |
145 |
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const char *p = hostname; |
146 |
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147 |
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assert(p); |
148 |
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149 |
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if (EmptyString(p) || *p == '.' || *p == ':') |
150 |
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return 0; |
151 |
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152 |
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for (; *p; ++p) |
153 |
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if (!IsHostChar(*p)) |
154 |
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return 0; |
155 |
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156 |
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return 1; |
157 |
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} |
158 |
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|
159 |
michael |
8305 |
/*! \brief Handle a complete DNS lookup. Send the client on its way to a connection |
160 |
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* completion, regardless of success or failure. |
161 |
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* \param vptr The pending struct AuthRequest. |
162 |
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* \param addr IP address being resolved. |
163 |
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* \param name Resolved name, or NULL if lookup failed. |
164 |
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* \param namelength String length of the resolved hostname pointed by 'name' |
165 |
adx |
30 |
*/ |
166 |
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static void |
167 |
michael |
4409 |
auth_dns_callback(void *vptr, const struct irc_ssaddr *addr, const char *name, size_t namelength) |
168 |
adx |
30 |
{ |
169 |
michael |
4853 |
struct AuthRequest *const auth = vptr; |
170 |
adx |
30 |
|
171 |
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ClearDNSPending(auth); |
172 |
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|
173 |
michael |
4409 |
if (!EmptyString(name)) |
174 |
adx |
30 |
{ |
175 |
michael |
4589 |
if (auth->client->connection->ip.ss.ss_family == AF_INET6) |
176 |
adx |
30 |
{ |
177 |
michael |
4857 |
const struct sockaddr_in6 *const v6 = (const struct sockaddr_in6 *)&auth->client->connection->ip; |
178 |
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const struct sockaddr_in6 *const v6dns = (const struct sockaddr_in6 *)addr; |
179 |
michael |
3250 |
|
180 |
michael |
5901 |
if (memcmp(&v6->sin6_addr, &v6dns->sin6_addr, sizeof(struct in6_addr))) |
181 |
adx |
30 |
{ |
182 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_IP_MISMATCH); |
183 |
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auth_release_client(auth); |
184 |
michael |
4409 |
return; |
185 |
adx |
30 |
} |
186 |
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} |
187 |
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else |
188 |
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{ |
189 |
michael |
4857 |
const struct sockaddr_in *const v4 = (const struct sockaddr_in *)&auth->client->connection->ip; |
190 |
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const struct sockaddr_in *const v4dns = (const struct sockaddr_in *)addr; |
191 |
michael |
3250 |
|
192 |
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if (v4->sin_addr.s_addr != v4dns->sin_addr.s_addr) |
193 |
adx |
30 |
{ |
194 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_IP_MISMATCH); |
195 |
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auth_release_client(auth); |
196 |
michael |
4409 |
return; |
197 |
adx |
30 |
} |
198 |
|
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} |
199 |
michael |
3250 |
|
200 |
michael |
4409 |
if (namelength > HOSTLEN) |
201 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_HOST_TOOLONG); |
202 |
michael |
8216 |
else if (!auth_verify_hostname(name)) |
203 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_HOST_INVALID); |
204 |
michael |
4409 |
else |
205 |
adx |
30 |
{ |
206 |
michael |
4409 |
strlcpy(auth->client->host, name, sizeof(auth->client->host)); |
207 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_FIN_DNS); |
208 |
adx |
30 |
} |
209 |
|
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} |
210 |
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else |
211 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_FAIL_DNS); |
212 |
adx |
30 |
|
213 |
michael |
8305 |
auth_release_client(auth); |
214 |
adx |
30 |
} |
215 |
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|
216 |
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/* |
217 |
michael |
8305 |
* auth_error - handle auth send errors |
218 |
adx |
30 |
*/ |
219 |
|
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static void |
220 |
|
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auth_error(struct AuthRequest *auth) |
221 |
|
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{ |
222 |
michael |
896 |
++ServerStats.is_abad; |
223 |
adx |
30 |
|
224 |
michael |
8338 |
fd_close(auth->fd); |
225 |
|
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auth->fd = NULL; |
226 |
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|
227 |
adx |
30 |
ClearAuth(auth); |
228 |
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|
229 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_FAIL_ID); |
230 |
adx |
30 |
|
231 |
michael |
8305 |
auth_release_client(auth); |
232 |
adx |
30 |
} |
233 |
|
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|
234 |
michael |
4310 |
/** Enum used to index ident reply fields in a human-readable way. */ |
235 |
|
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enum IdentReplyFields |
236 |
|
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{ |
237 |
|
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IDENT_PORT_NUMBERS, |
238 |
|
|
IDENT_REPLY_TYPE, |
239 |
|
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IDENT_OS_TYPE, |
240 |
|
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IDENT_INFO, |
241 |
|
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USERID_TOKEN_COUNT |
242 |
|
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}; |
243 |
|
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|
244 |
|
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/** Parse an ident reply line and extract the userid from it. |
245 |
|
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* \param reply The ident reply line. |
246 |
|
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* \return The userid, or NULL on parse failure. |
247 |
|
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*/ |
248 |
|
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static const char * |
249 |
michael |
8305 |
auth_check_ident_reply(char *const reply) |
250 |
michael |
4310 |
{ |
251 |
|
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char *token = NULL, *end = NULL; |
252 |
|
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char *vector[USERID_TOKEN_COUNT]; |
253 |
michael |
7583 |
const unsigned int count = token_vector(reply, ':', vector, USERID_TOKEN_COUNT); |
254 |
michael |
4310 |
|
255 |
|
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if (USERID_TOKEN_COUNT != count) |
256 |
|
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return NULL; |
257 |
|
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|
258 |
|
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/* |
259 |
|
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* Second token is the reply type |
260 |
|
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*/ |
261 |
|
|
token = vector[IDENT_REPLY_TYPE]; |
262 |
|
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|
263 |
|
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if (EmptyString(token)) |
264 |
|
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return NULL; |
265 |
|
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|
266 |
|
|
while (IsSpace(*token)) |
267 |
|
|
++token; |
268 |
|
|
|
269 |
|
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if (strncmp(token, "USERID", 6)) |
270 |
|
|
return NULL; |
271 |
|
|
|
272 |
|
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/* |
273 |
|
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* Third token is the os type |
274 |
|
|
*/ |
275 |
|
|
token = vector[IDENT_OS_TYPE]; |
276 |
|
|
|
277 |
|
|
if (EmptyString(token)) |
278 |
|
|
return NULL; |
279 |
|
|
|
280 |
|
|
while (IsSpace(*token)) |
281 |
|
|
++token; |
282 |
|
|
|
283 |
|
|
/* |
284 |
|
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* Unless "OTHER" is specified as the operating system type, the server |
285 |
|
|
* is expected to return the "normal" user identification of the owner |
286 |
|
|
* of this connection. "Normal" in this context may be taken to mean a |
287 |
|
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* string of characters which uniquely identifies the connection owner |
288 |
|
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* such as a user identifier assigned by the system administrator and |
289 |
|
|
* used by such user as a mail identifier, or as the "user" part of a |
290 |
|
|
* user/password pair used to gain access to system resources. When an |
291 |
|
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* operating system is specified (e.g., anything but "OTHER"), the user |
292 |
|
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* identifier is expected to be in a more or less immediately useful |
293 |
|
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* form - e.g., something that could be used as an argument to "finger" |
294 |
|
|
* or as a mail address. |
295 |
|
|
*/ |
296 |
|
|
if (!strncmp(token, "OTHER", 5)) |
297 |
|
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return NULL; |
298 |
|
|
|
299 |
|
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/* |
300 |
|
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* Fourth token is the username |
301 |
|
|
*/ |
302 |
|
|
token = vector[IDENT_INFO]; |
303 |
|
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|
304 |
|
|
if (EmptyString(token)) |
305 |
|
|
return NULL; |
306 |
|
|
|
307 |
|
|
while (IsSpace(*token)) |
308 |
|
|
++token; |
309 |
|
|
|
310 |
|
|
while (*token == '~' || *token == '^') |
311 |
|
|
++token; |
312 |
|
|
|
313 |
|
|
/* |
314 |
|
|
* Look for the end of the username, terminators are '\0, @, <SPACE>, :' |
315 |
|
|
*/ |
316 |
|
|
for (end = token; *end; ++end) |
317 |
|
|
if (IsSpace(*end) || '@' == *end || ':' == *end) |
318 |
|
|
break; |
319 |
|
|
*end = '\0'; |
320 |
|
|
|
321 |
|
|
return token; |
322 |
|
|
} |
323 |
|
|
|
324 |
michael |
8305 |
/*! \brief Read the reply (if any) from the ident server we connected to. We |
325 |
|
|
* only give it one shot, if the reply isn't good the first time fail |
326 |
|
|
* the authentication entirely. --Bleep |
327 |
|
|
* \param fd The socket/fd to read from. |
328 |
|
|
* \param data The request to read. |
329 |
adx |
30 |
*/ |
330 |
|
|
static void |
331 |
michael |
7954 |
auth_read_reply(fde_t *fd, void *data) |
332 |
adx |
30 |
{ |
333 |
michael |
4853 |
struct AuthRequest *const auth = data; |
334 |
michael |
4310 |
const char *username = NULL; |
335 |
|
|
ssize_t len = 0; |
336 |
|
|
char buf[RFC1413_BUFSIZ + 1]; |
337 |
adx |
30 |
|
338 |
michael |
8338 |
assert(fd == auth->fd); |
339 |
|
|
|
340 |
|
|
if ((len = recv(auth->fd->fd, buf, RFC1413_BUFSIZ, 0)) > 0) |
341 |
adx |
30 |
{ |
342 |
|
|
buf[len] = '\0'; |
343 |
michael |
8305 |
username = auth_check_ident_reply(buf); |
344 |
adx |
30 |
} |
345 |
|
|
|
346 |
michael |
8338 |
fd_close(auth->fd); |
347 |
|
|
auth->fd = NULL; |
348 |
|
|
|
349 |
adx |
30 |
ClearAuth(auth); |
350 |
|
|
|
351 |
michael |
4310 |
if (EmptyString(username)) |
352 |
adx |
30 |
{ |
353 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_FAIL_ID); |
354 |
michael |
896 |
++ServerStats.is_abad; |
355 |
adx |
30 |
} |
356 |
|
|
else |
357 |
|
|
{ |
358 |
michael |
4310 |
strlcpy(auth->client->username, username, sizeof(auth->client->username)); |
359 |
michael |
8305 |
auth_sendheader(auth->client, REPORT_FIN_ID); |
360 |
michael |
896 |
++ServerStats.is_asuc; |
361 |
michael |
6314 |
AddFlag(auth->client, FLAGS_GOTID); |
362 |
adx |
30 |
} |
363 |
|
|
|
364 |
michael |
8305 |
auth_release_client(auth); |
365 |
adx |
30 |
} |
366 |
|
|
|
367 |
|
|
/* |
368 |
michael |
8305 |
* auth_connect_callback() - deal with the result of comm_connect_tcp() |
369 |
|
|
* |
370 |
|
|
* If the connection failed, we simply close the auth fd and report |
371 |
|
|
* a failure. If the connection suceeded send the ident server a query |
372 |
|
|
* giving "theirport , ourport". The write is only attempted *once* so |
373 |
|
|
* it is deemed to be a fail if the entire write doesn't write all the |
374 |
|
|
* data given. This shouldnt be a problem since the socket should have |
375 |
|
|
* a write buffer far greater than this message to store it in should |
376 |
|
|
* problems arise. -avalon |
377 |
|
|
*/ |
378 |
|
|
static void |
379 |
|
|
auth_connect_callback(fde_t *fd, int error, void *data) |
380 |
|
|
{ |
381 |
|
|
struct AuthRequest *const auth = data; |
382 |
|
|
struct irc_ssaddr us; |
383 |
|
|
struct irc_ssaddr them; |
384 |
|
|
char authbuf[16]; |
385 |
|
|
ssize_t len = 0; |
386 |
|
|
socklen_t ulen = sizeof(struct irc_ssaddr); |
387 |
|
|
socklen_t tlen = sizeof(struct irc_ssaddr); |
388 |
|
|
uint16_t uport, tport; |
389 |
|
|
struct sockaddr_in6 *v6; |
390 |
|
|
|
391 |
|
|
if (error != COMM_OK) |
392 |
|
|
{ |
393 |
|
|
auth_error(auth); |
394 |
|
|
return; |
395 |
|
|
} |
396 |
|
|
|
397 |
michael |
8338 |
assert(fd == auth->fd); |
398 |
|
|
|
399 |
|
|
if (getsockname(auth->client->connection->fd->fd, (struct sockaddr *)&us, &ulen) || |
400 |
|
|
getpeername(auth->client->connection->fd->fd, (struct sockaddr *)&them, &tlen)) |
401 |
michael |
8305 |
{ |
402 |
|
|
report_error(L_ALL, "auth get{sock,peer}name error %s:%s", |
403 |
|
|
client_get_name(auth->client, SHOW_IP), errno); |
404 |
|
|
auth_error(auth); |
405 |
|
|
return; |
406 |
|
|
} |
407 |
|
|
|
408 |
|
|
v6 = (struct sockaddr_in6 *)&us; |
409 |
|
|
uport = ntohs(v6->sin6_port); |
410 |
|
|
v6 = (struct sockaddr_in6 *)&them; |
411 |
|
|
tport = ntohs(v6->sin6_port); |
412 |
|
|
|
413 |
|
|
len = snprintf(authbuf, sizeof(authbuf), "%u, %u\r\n", tport, uport); |
414 |
|
|
|
415 |
|
|
if (send(fd->fd, authbuf, len, 0) != len) |
416 |
|
|
{ |
417 |
|
|
auth_error(auth); |
418 |
|
|
return; |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
comm_setselect(fd, COMM_SELECT_READ, auth_read_reply, auth, 0); |
422 |
|
|
} |
423 |
|
|
|
424 |
|
|
/*! \brief Flag the client to show an attempt to contact the ident server on |
425 |
|
|
* the client's host. Should the connect or any later phase of the |
426 |
|
|
* identifying process fail, it is aborted and the user is given a |
427 |
|
|
* username of "unknown". |
428 |
|
|
* \param auth The request for which to start the ident lookup. |
429 |
|
|
*/ |
430 |
|
|
static void |
431 |
|
|
auth_start_query(struct AuthRequest *auth) |
432 |
|
|
{ |
433 |
|
|
struct irc_ssaddr localaddr; |
434 |
|
|
socklen_t locallen = sizeof(struct irc_ssaddr); |
435 |
|
|
struct sockaddr_in6 *v6; |
436 |
|
|
|
437 |
|
|
/* Open a socket of the same type as the client socket */ |
438 |
michael |
8338 |
int fd = comm_socket(auth->client->connection->ip.ss.ss_family, SOCK_STREAM, 0); |
439 |
|
|
if (fd == -1) |
440 |
michael |
8305 |
{ |
441 |
|
|
report_error(L_ALL, "creating auth stream socket %s:%s", |
442 |
|
|
client_get_name(auth->client, SHOW_IP), errno); |
443 |
|
|
++ServerStats.is_abad; |
444 |
|
|
return; |
445 |
|
|
} |
446 |
|
|
|
447 |
michael |
8338 |
auth->fd = fd_open(fd, 1, "ident"); |
448 |
|
|
|
449 |
michael |
8305 |
SetDoingAuth(auth); |
450 |
|
|
auth_sendheader(auth->client, REPORT_DO_ID); |
451 |
|
|
|
452 |
|
|
/* |
453 |
|
|
* Get the local address of the client and bind to that to |
454 |
|
|
* make the auth request. |
455 |
|
|
*/ |
456 |
|
|
memset(&localaddr, 0, locallen); |
457 |
michael |
8338 |
getsockname(auth->client->connection->fd->fd, (struct sockaddr *)&localaddr, &locallen); |
458 |
michael |
8305 |
|
459 |
|
|
remove_ipv6_mapping(&localaddr); |
460 |
|
|
v6 = (struct sockaddr_in6 *)&localaddr; |
461 |
|
|
v6->sin6_port = htons(0); |
462 |
|
|
localaddr.ss_port = htons(0); |
463 |
|
|
|
464 |
michael |
8338 |
comm_connect_tcp(auth->fd, auth->client->sockhost, RFC1413_PORT, |
465 |
michael |
8305 |
(struct sockaddr *)&localaddr, localaddr.ss_len, auth_connect_callback, |
466 |
|
|
auth, auth->client->connection->ip.ss.ss_family, |
467 |
|
|
GlobalSetOptions.ident_timeout); |
468 |
|
|
} |
469 |
|
|
|
470 |
|
|
/* |
471 |
|
|
* auth_start |
472 |
|
|
* |
473 |
|
|
* inputs - pointer to client to auth |
474 |
|
|
* output - NONE |
475 |
|
|
* side effects - starts auth (identd) and dns queries for a client |
476 |
|
|
*/ |
477 |
|
|
void |
478 |
|
|
auth_start(struct Client *client_p) |
479 |
|
|
{ |
480 |
michael |
8338 |
struct AuthRequest *auth = auth_make(client_p); |
481 |
michael |
8305 |
|
482 |
|
|
dlinkAddTail(auth, &auth->node, &auth_list); |
483 |
|
|
|
484 |
|
|
auth_sendheader(client_p, REPORT_DO_DNS); |
485 |
|
|
|
486 |
|
|
SetDNSPending(auth); |
487 |
|
|
|
488 |
|
|
if (ConfigGeneral.disable_auth == 0) |
489 |
|
|
auth_start_query(auth); |
490 |
|
|
|
491 |
|
|
gethost_byaddr(auth_dns_callback, auth, &client_p->connection->ip); |
492 |
|
|
} |
493 |
|
|
|
494 |
|
|
/* |
495 |
michael |
7954 |
* auth_delete() |
496 |
adx |
30 |
*/ |
497 |
michael |
2916 |
void |
498 |
michael |
7954 |
auth_delete(struct AuthRequest *auth) |
499 |
adx |
30 |
{ |
500 |
michael |
8305 |
if (IsDoingAuth(auth)) |
501 |
|
|
{ |
502 |
michael |
8338 |
fd_close(auth->fd); |
503 |
|
|
auth->fd = NULL; |
504 |
michael |
8305 |
ClearAuth(auth); |
505 |
|
|
} |
506 |
|
|
|
507 |
michael |
992 |
if (IsDNSPending(auth)) |
508 |
michael |
8299 |
{ |
509 |
michael |
992 |
delete_resolver_queries(auth); |
510 |
michael |
8299 |
ClearDNSPending(auth); |
511 |
|
|
} |
512 |
adx |
30 |
|
513 |
michael |
8338 |
dlinkDelete(&auth->node, &auth_list); |
514 |
|
|
mp_pool_release(auth); |
515 |
adx |
30 |
} |
516 |
michael |
4310 |
|
517 |
michael |
8305 |
/* |
518 |
|
|
* auth_timeout_queries - timeout resolver and identd requests |
519 |
|
|
* allow clients through if requests failed |
520 |
|
|
*/ |
521 |
|
|
static void |
522 |
|
|
auth_timeout_queries(void *notused) |
523 |
|
|
{ |
524 |
|
|
dlink_node *node, *node_next; |
525 |
|
|
|
526 |
|
|
DLINK_FOREACH_SAFE(node, node_next, auth_list.head) |
527 |
|
|
{ |
528 |
|
|
struct AuthRequest *auth = node->data; |
529 |
|
|
|
530 |
|
|
if (auth->timeout > CurrentTime) |
531 |
|
|
break; |
532 |
|
|
|
533 |
|
|
if (IsDoingAuth(auth)) |
534 |
|
|
{ |
535 |
|
|
++ServerStats.is_abad; |
536 |
michael |
8338 |
fd_close(auth->fd); |
537 |
|
|
auth->fd = NULL; |
538 |
|
|
|
539 |
michael |
8305 |
ClearAuth(auth); |
540 |
|
|
|
541 |
|
|
auth_sendheader(auth->client, REPORT_FAIL_ID); |
542 |
|
|
} |
543 |
|
|
|
544 |
|
|
if (IsDNSPending(auth)) |
545 |
|
|
{ |
546 |
|
|
delete_resolver_queries(auth); |
547 |
|
|
ClearDNSPending(auth); |
548 |
|
|
|
549 |
|
|
auth_sendheader(auth->client, REPORT_FAIL_DNS); |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
auth_release_client(auth); |
553 |
|
|
} |
554 |
|
|
} |
555 |
|
|
|
556 |
michael |
4310 |
/* auth_init |
557 |
|
|
* |
558 |
|
|
* Initialise the auth code |
559 |
|
|
*/ |
560 |
|
|
void |
561 |
|
|
auth_init(void) |
562 |
|
|
{ |
563 |
|
|
static struct event timeout_auth_queries = |
564 |
|
|
{ |
565 |
michael |
8305 |
.name = "auth_timeout_queries", |
566 |
|
|
.handler = auth_timeout_queries, |
567 |
michael |
4310 |
.when = 1 |
568 |
|
|
}; |
569 |
|
|
|
570 |
michael |
8338 |
auth_pool = mp_pool_new(sizeof(struct AuthRequest), MP_CHUNK_SIZE_AUTH); |
571 |
michael |
4310 |
event_add(&timeout_auth_queries, NULL); |
572 |
|
|
} |