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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_error.c: Handles error messages from the other end. | |
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 | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "client.h" | |
212380e3 AC |
27 | #include "ircd.h" |
28 | #include "numeric.h" | |
29 | #include "send.h" | |
30 | #include "msg.h" | |
212380e3 | 31 | #include "modules.h" |
4016731b | 32 | #include "logger.h" |
212380e3 AC |
33 | #include "s_conf.h" |
34 | ||
eeabf33a EM |
35 | static const char error_desc[] = |
36 | "Provides the ERROR command for clients and servers"; | |
37 | ||
3c7d6fcc EM |
38 | static void m_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
39 | static void ms_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
212380e3 AC |
40 | |
41 | struct Message error_msgtab = { | |
7baa37a9 | 42 | "ERROR", 0, 0, 0, 0, |
212380e3 AC |
43 | {{m_error, 0}, mg_ignore, mg_ignore, {ms_error, 0}, mg_ignore, mg_ignore} |
44 | }; | |
45 | ||
46 | mapi_clist_av1 error_clist[] = { | |
47 | &error_msgtab, NULL | |
48 | }; | |
49 | ||
ee6dcb05 | 50 | DECLARE_MODULE_AV2(error, NULL, NULL, error_clist, NULL, NULL, NULL, NULL, error_desc); |
212380e3 | 51 | |
922aa826 | 52 | /* Determine whether an ERROR message is safe to show (no IP address in it) */ |
3c7d6fcc | 53 | static bool |
922aa826 JT |
54 | is_safe_error(const char *message) |
55 | { | |
56 | char prefix2[100]; | |
57 | const char *p; | |
58 | ||
59 | if (!strncmp(message, "Closing Link: 127.0.0.1 (", 25)) | |
3c7d6fcc | 60 | return true; |
5203cba5 | 61 | snprintf(prefix2, sizeof prefix2, |
922aa826 JT |
62 | "Closing Link: 127.0.0.1 %s (", me.name); |
63 | if (!strncmp(message, prefix2, strlen(prefix2))) | |
3c7d6fcc | 64 | return true; |
922aa826 | 65 | if (!strncmp(message, "Restart by ", 11)) |
3c7d6fcc | 66 | return true; |
922aa826 | 67 | if (!strncmp(message, "Terminated by ", 14)) |
3c7d6fcc | 68 | return true; |
922aa826 | 69 | |
f956cb0f | 70 | if (!rb_strncasecmp(message, "Closing Link", 12)) |
3c7d6fcc | 71 | return false; |
922aa826 | 72 | if (strchr(message, '[')) |
3c7d6fcc | 73 | return false; |
922aa826 JT |
74 | p = strchr(message, '.'); |
75 | if (p != NULL && p[1] != '\0') | |
3c7d6fcc | 76 | return false; |
922aa826 | 77 | if (strchr(message, ':')) |
3c7d6fcc | 78 | return false; |
922aa826 | 79 | |
3c7d6fcc | 80 | return true; |
922aa826 | 81 | } |
212380e3 AC |
82 | |
83 | /* | |
84 | * Note: At least at protocol level ERROR has only one parameter, | |
85 | * although this is called internally from other functions | |
86 | * --msa | |
87 | * | |
212380e3 AC |
88 | * parv[*] = parameters |
89 | */ | |
3c7d6fcc | 90 | static void |
428ca87b | 91 | m_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
92 | { |
93 | const char *para; | |
922aa826 | 94 | int hideit = ConfigFileEntry.hide_error_messages; |
212380e3 AC |
95 | |
96 | para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>"; | |
97 | ||
0a849a8f JT |
98 | if (IsAnyServer(client_p)) |
99 | { | |
100 | ilog(L_SERVER, "Received ERROR message from %s: %s", | |
101 | log_client_name(source_p, SHOW_IP), para); | |
102 | } | |
212380e3 | 103 | |
922aa826 JT |
104 | if(is_safe_error(para)) |
105 | hideit = 0; | |
106 | if(IsAnyServer(client_p)) | |
212380e3 | 107 | { |
922aa826 JT |
108 | if (hideit < 2) |
109 | sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : (is_remote_connect(client_p) ? L_NETWIDE : L_ALL), | |
110 | "ERROR :from %s -- %s", | |
b3ebc7ab | 111 | client_p->name, para); |
922aa826 JT |
112 | if (hideit > 0) |
113 | sendto_realops_snomask(SNO_GENERAL, (hideit == 1 ? L_OPER : L_ALL) | (is_remote_connect(client_p) ? L_NETWIDE : L_ALL), | |
114 | "ERROR :from %s -- <hidden>", | |
b3ebc7ab | 115 | client_p->name); |
212380e3 AC |
116 | } |
117 | ||
118 | exit_client(client_p, source_p, source_p, "ERROR"); | |
212380e3 AC |
119 | } |
120 | ||
3c7d6fcc | 121 | static void |
428ca87b | 122 | ms_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
123 | { |
124 | const char *para; | |
922aa826 | 125 | int hideit = ConfigFileEntry.hide_error_messages; |
212380e3 AC |
126 | |
127 | para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>"; | |
128 | ||
129 | ilog(L_SERVER, "Received ERROR message from %s: %s", | |
130 | log_client_name(source_p, SHOW_IP), para); | |
131 | ||
922aa826 JT |
132 | if(is_safe_error(para)) |
133 | hideit = 0; | |
134 | if(hideit == 2) | |
3c7d6fcc | 135 | return; |
212380e3 AC |
136 | |
137 | if(client_p == source_p) | |
138 | { | |
922aa826 | 139 | sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s -- %s", |
b3ebc7ab | 140 | client_p->name, para); |
212380e3 AC |
141 | } |
142 | else | |
143 | { | |
922aa826 | 144 | sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s via %s -- %s", |
b3ebc7ab | 145 | source_p->name, client_p->name, para); |
212380e3 | 146 | } |
212380e3 | 147 | } |