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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_oper.c: Makes a user an IRC Operator. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | */ | |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "client.h" | |
27 | #include "match.h" | |
28 | #include "ircd.h" | |
29 | #include "numeric.h" | |
30 | #include "s_conf.h" | |
31 | #include "s_newconf.h" | |
32 | #include "logger.h" | |
33 | #include "s_user.h" | |
34 | #include "s_serv.h" | |
35 | #include "send.h" | |
36 | #include "msg.h" | |
37 | #include "parse.h" | |
38 | #include "modules.h" | |
39 | #include "packet.h" | |
40 | #include "cache.h" | |
41 | ||
42 | static const char oper_desc[] = "Provides the OPER command to become an IRC operator"; | |
43 | ||
44 | static void m_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
45 | static void mc_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
46 | static void me_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
47 | ||
48 | static bool match_oper_password(const char *password, struct oper_conf *oper_p); | |
49 | ||
50 | struct Message oper_msgtab = { | |
51 | "OPER", 0, 0, 0, 0, | |
52 | {mg_unreg, {m_oper, 3}, {mc_oper, 2}, mg_ignore, {me_oper, 2}, {m_oper, 3}} | |
53 | }; | |
54 | ||
55 | mapi_clist_av1 oper_clist[] = { &oper_msgtab, NULL }; | |
56 | ||
57 | DECLARE_MODULE_AV2(oper, NULL, NULL, oper_clist, NULL, NULL, NULL, NULL, oper_desc); | |
58 | ||
59 | /* | |
60 | * m_oper | |
61 | * parv[1] = oper name | |
62 | * parv[2] = oper password | |
63 | */ | |
64 | static void | |
65 | m_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
66 | { | |
67 | struct oper_conf *oper_p; | |
68 | const char *name; | |
69 | const char *password; | |
70 | ||
71 | name = parv[1]; | |
72 | password = parv[2]; | |
73 | ||
74 | if (ConfigFileEntry.oper_secure_only && !IsSecureClient(source_p)) | |
75 | { | |
76 | sendto_one_notice(source_p, ":You must be using a secure connection to /OPER on this server"); | |
77 | if (ConfigFileEntry.failed_oper_notice) | |
78 | { | |
79 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
80 | "Failed OPER attempt - missing secure connection by %s (%s@%s)", | |
81 | source_p->name, source_p->username, source_p->host); | |
82 | } | |
83 | return; | |
84 | } | |
85 | ||
86 | if(IsOper(source_p)) | |
87 | { | |
88 | sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name); | |
89 | send_oper_motd(source_p); | |
90 | return; | |
91 | } | |
92 | ||
93 | /* end the grace period */ | |
94 | if(!IsFloodDone(source_p)) | |
95 | flood_endgrace(source_p); | |
96 | ||
97 | oper_p = find_oper_conf(source_p->username, source_p->orighost, | |
98 | source_p->sockhost, name); | |
99 | ||
100 | if(oper_p == NULL) | |
101 | { | |
102 | sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST)); | |
103 | ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)", | |
104 | name, source_p->name, | |
105 | source_p->username, source_p->host, source_p->sockhost); | |
106 | ||
107 | if(ConfigFileEntry.failed_oper_notice) | |
108 | { | |
109 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
110 | "Failed OPER attempt - user@host mismatch or no operator block for %s by %s (%s@%s)", | |
111 | name, source_p->name, source_p->username, source_p->host); | |
112 | } | |
113 | ||
114 | return; | |
115 | } | |
116 | ||
117 | if(IsOperConfNeedSSL(oper_p) && !IsSecureClient(source_p)) | |
118 | { | |
119 | sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST)); | |
120 | ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- requires SSL/TLS", | |
121 | name, source_p->name, | |
122 | source_p->username, source_p->host, source_p->sockhost); | |
123 | ||
124 | if(ConfigFileEntry.failed_oper_notice) | |
125 | { | |
126 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
127 | "Failed OPER attempt - missing SSL/TLS by %s (%s@%s)", | |
128 | source_p->name, source_p->username, source_p->host); | |
129 | } | |
130 | return; | |
131 | } | |
132 | ||
133 | if (oper_p->certfp != NULL) | |
134 | { | |
135 | if (source_p->certfp == NULL || rb_strcasecmp(source_p->certfp, oper_p->certfp)) | |
136 | { | |
137 | sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST)); | |
138 | ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- client certificate fingerprint mismatch", | |
139 | name, source_p->name, | |
140 | source_p->username, source_p->host, source_p->sockhost); | |
141 | ||
142 | if(ConfigFileEntry.failed_oper_notice) | |
143 | { | |
144 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
145 | "Failed OPER attempt - client certificate fingerprint mismatch by %s (%s@%s)", | |
146 | source_p->name, source_p->username, source_p->host); | |
147 | } | |
148 | return; | |
149 | } | |
150 | } | |
151 | ||
152 | if(match_oper_password(password, oper_p)) | |
153 | { | |
154 | oper_up(source_p, oper_p); | |
155 | ||
156 | ilog(L_OPERED, "OPER %s by %s!%s@%s (%s)", | |
157 | name, source_p->name, source_p->username, source_p->host, | |
158 | source_p->sockhost); | |
159 | return; | |
160 | } | |
161 | else | |
162 | { | |
163 | sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), | |
164 | me.name, source_p->name); | |
165 | ||
166 | ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)", | |
167 | name, source_p->name, source_p->username, source_p->host, | |
168 | source_p->sockhost); | |
169 | ||
170 | if(ConfigFileEntry.failed_oper_notice) | |
171 | { | |
172 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
173 | "Failed OPER attempt by %s (%s@%s)", | |
174 | source_p->name, source_p->username, source_p->host); | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
179 | /* | |
180 | * mc_oper - server-to-server OPER propagation | |
181 | * parv[1] = opername | |
182 | * parv[2] = privset | |
183 | */ | |
184 | static void | |
185 | mc_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
186 | { | |
187 | struct PrivilegeSet *privset; | |
188 | ||
189 | if (parc >= 3) | |
190 | { | |
191 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s OPER %s %s", use_id(source_p), parv[1], parv[2]); | |
192 | ||
193 | privset = privilegeset_get(parv[2]); | |
194 | if(privset == NULL) | |
195 | { | |
196 | /* if we don't have a matching privset, we'll create an empty one and | |
197 | * mark it illegal, so it gets picked up on a rehash later */ | |
198 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Received OPER for %s with unknown privset %s", source_p->name, parv[2]); | |
199 | privset = privilegeset_set_new(parv[2], "", 0); | |
200 | privset->status |= CONF_ILLEGAL; | |
201 | } | |
202 | ||
203 | privset = privilegeset_ref(privset); | |
204 | if (source_p->user->privset != NULL) | |
205 | privilegeset_unref(source_p->user->privset); | |
206 | ||
207 | source_p->user->privset = privset; | |
208 | } | |
209 | else | |
210 | { | |
211 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s OPER %s", use_id(source_p), parv[1]); | |
212 | } | |
213 | ||
214 | rb_free(source_p->user->opername); | |
215 | source_p->user->opername = rb_strdup(parv[1]); | |
216 | } | |
217 | ||
218 | /* | |
219 | * me_oper - ircd-seven-style OPER propagation | |
220 | * parv[1] = opername | |
221 | */ | |
222 | static void | |
223 | me_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
224 | { | |
225 | rb_free(source_p->user->opername); | |
226 | source_p->user->opername = rb_strdup(parv[1]); | |
227 | } | |
228 | ||
229 | /* | |
230 | * match_oper_password | |
231 | * | |
232 | * inputs - pointer to given password | |
233 | * - pointer to Conf | |
234 | * output - true if match, false otherwise | |
235 | * side effects - none | |
236 | */ | |
237 | static bool | |
238 | match_oper_password(const char *password, struct oper_conf *oper_p) | |
239 | { | |
240 | const char *encr; | |
241 | ||
242 | /* passwd may be NULL pointer. Head it off at the pass... */ | |
243 | if(EmptyString(oper_p->passwd)) | |
244 | return false; | |
245 | ||
246 | if(IsOperConfEncrypted(oper_p)) | |
247 | { | |
248 | /* use first two chars of the password they send in as salt */ | |
249 | /* If the password in the conf is MD5, and ircd is linked | |
250 | * to scrypt on FreeBSD, or the standard crypt library on | |
251 | * glibc Linux, then this code will work fine on generating | |
252 | * the proper encrypted hash for comparison. | |
253 | */ | |
254 | if(!EmptyString(password)) | |
255 | encr = rb_crypt(password, oper_p->passwd); | |
256 | else | |
257 | encr = ""; | |
258 | } | |
259 | else | |
260 | encr = password; | |
261 | ||
262 | if(encr != NULL && strcmp(encr, oper_p->passwd) == 0) | |
263 | return true; | |
264 | else | |
265 | return false; | |
266 | } |