| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
| 3 |
* |
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* Copyright (c) 1997-2014 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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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 |
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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 |
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* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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|
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/*! \file parse.c |
| 23 |
* \brief The message parser. |
| 24 |
* \version $Id$ |
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*/ |
| 26 |
|
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#include "stdinc.h" |
| 28 |
#include "client.h" |
| 29 |
#include "parse.h" |
| 30 |
#include "channel.h" |
| 31 |
#include "hash.h" |
| 32 |
#include "irc_string.h" |
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#include "ircd.h" |
| 34 |
#include "numeric.h" |
| 35 |
#include "log.h" |
| 36 |
#include "send.h" |
| 37 |
#include "conf.h" |
| 38 |
#include "memory.h" |
| 39 |
#include "user.h" |
| 40 |
#include "server.h" |
| 41 |
|
| 42 |
|
| 43 |
/* |
| 44 |
* (based on orabidoo's parser code) |
| 45 |
* |
| 46 |
* This has always just been a trie. Look at volume III of Knuth ACP |
| 47 |
* |
| 48 |
* |
| 49 |
* ok, you start out with an array of pointers, each one corresponds |
| 50 |
* to a letter at the current position in the command being examined. |
| 51 |
* |
| 52 |
* so roughly you have this for matching 'trie' or 'tie' |
| 53 |
* |
| 54 |
* 't' points -> [MessageTree *] 'r' -> [MessageTree *] -> 'i' |
| 55 |
* -> [MessageTree *] -> [MessageTree *] -> 'e' and matches |
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* |
| 57 |
* 'i' -> [MessageTree *] -> 'e' and matches |
| 58 |
* |
| 59 |
* BUGS (Limitations!) |
| 60 |
* |
| 61 |
* I designed this trie to parse ircd commands. Hence it currently |
| 62 |
* casefolds. This is trivial to fix by increasing MAXPTRLEN. |
| 63 |
* This trie also "folds" '{' etc. down. This means, the input to this |
| 64 |
* trie must be alpha tokens only. This again, is a limitation that |
| 65 |
* can be overcome by increasing MAXPTRLEN to include upper/lower case |
| 66 |
* at the expense of more memory. At the extreme end, you could make |
| 67 |
* MAXPTRLEN 128. |
| 68 |
* |
| 69 |
* This is also not a patricia trie. On short ircd tokens, this is |
| 70 |
* not likely going to matter. |
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* |
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* Diane Bruce (Dianora), June 6 2003 |
| 73 |
*/ |
| 74 |
|
| 75 |
/* |
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* Must be a power of 2, and larger than 26 [a-z]|[A-Z]. It's used to allocate |
| 77 |
* the set of pointers at each node of the tree. |
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* There are MAXPTRLEN pointers at each node. Obviously, there have to be more |
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* pointers than ASCII letters. 32 is a nice number since there is then no need |
| 80 |
* to shift 'A'/'a' to base 0 index, at the expense of a few never used |
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* pointers. |
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* For a small parser like this, this is a good compromise and does |
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* make it somewhat faster. - Dianora |
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*/ |
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#define MAXPTRLEN 32 |
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|
| 87 |
|
| 88 |
static struct MessageTree |
| 89 |
{ |
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int links; /* Count of all pointers (including msg) at this node |
| 91 |
* used as reference count for deletion of _this_ node. |
| 92 |
*/ |
| 93 |
struct Message *msg; |
| 94 |
struct MessageTree *pointers[MAXPTRLEN]; |
| 95 |
} msg_tree; |
| 96 |
|
| 97 |
|
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/* remove_unknown() |
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* |
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* inputs - |
| 101 |
* output - |
| 102 |
* side effects - |
| 103 |
*/ |
| 104 |
static void |
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parse_remove_unknown(struct Client *client_p, char *lsender, char *lbuffer) |
| 106 |
{ |
| 107 |
/* |
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* Do kill if it came from a server because it means there is a ghost |
| 109 |
* user on the other server which needs to be removed. -avalon |
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* Tell opers about this. -Taner |
| 111 |
*/ |
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/* |
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* '[0-9]something' is an ID (KILL/SQUIT depending on its length) |
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* 'nodots' is a nickname (KILL) |
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* 'no.dot.at.start' is a server (SQUIT) |
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*/ |
| 117 |
if ((IsDigit(*lsender) && strlen(lsender) <= IRC_MAXSID) || strchr(lsender, '.')) |
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{ |
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sendto_realops_flags(UMODE_DEBUG, L_ADMIN, SEND_NOTICE, |
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"Unknown prefix (%s) from %s, Squitting %s", |
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lbuffer, get_client_name(client_p, SHOW_IP), lsender); |
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sendto_realops_flags(UMODE_DEBUG, L_OPER, SEND_NOTICE, |
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"Unknown prefix (%s) from %s, Squitting %s", |
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lbuffer, client_p->name, lsender); |
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sendto_one(client_p, ":%s SQUIT %s :(Unknown prefix (%s) from %s)", |
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me.id, lsender, lbuffer, client_p->name); |
| 127 |
} |
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else |
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sendto_one(client_p, ":%s KILL %s :%s (Unknown Client)", |
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me.id, lsender, me.name); |
| 131 |
} |
| 132 |
|
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/* cancel_clients() |
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* |
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* inputs - |
| 136 |
* output - |
| 137 |
* side effects - |
| 138 |
*/ |
| 139 |
static void |
| 140 |
parse_cancel_clients(struct Client *client_p, struct Client *source_p, char *cmd) |
| 141 |
{ |
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if (IsServer(source_p) || IsMe(source_p)) |
| 143 |
{ |
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sendto_realops_flags(UMODE_DEBUG, L_ADMIN, SEND_NOTICE, |
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"Message for %s[%s] from %s", |
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source_p->name, source_p->from->name, |
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get_client_name(client_p, SHOW_IP)); |
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sendto_realops_flags(UMODE_DEBUG, L_OPER, SEND_NOTICE, |
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"Message for %s[%s] from %s", |
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source_p->name, source_p->from->name, |
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get_client_name(client_p, MASK_IP)); |
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sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
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"Not dropping server %s (%s) for Fake Direction", |
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client_p->name, source_p->name); |
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return; |
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} |
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|
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sendto_realops_flags(UMODE_DEBUG, L_ADMIN, SEND_NOTICE, |
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"Message for %s[%s@%s!%s] from %s (TS, ignored)", |
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source_p->name, source_p->username, source_p->host, |
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source_p->from->name, get_client_name(client_p, SHOW_IP)); |
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sendto_realops_flags(UMODE_DEBUG, L_OPER, SEND_NOTICE, |
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"Message for %s[%s@%s!%s] from %s (TS, ignored)", |
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source_p->name, source_p->username, source_p->host, |
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source_p->from->name, get_client_name(client_p, MASK_IP)); |
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} |
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|
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/* |
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* |
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* parc number of arguments ('sender' counted as one!) |
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* parv[0] pointer to 'sender' (may point to empty string) (not used) |
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* parv[1]..parv[parc-1] |
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* pointers to additional parameters, this is a NULL |
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* terminated list (parv[parc] == NULL). |
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* |
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* *WARNING* |
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* Numerics are mostly error reports. If there is something |
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* wrong with the message, just *DROP* it! Don't even think of |
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* sending back a neat error message -- big danger of creating |
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* a ping pong error message... |
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* |
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* Rewritten by Nemesi, Jan 1999, to support numeric nicks in parv[1] |
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* |
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* Called when we get a numeric message from a remote _server_ and we are |
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* supposed to forward it somewhere. Note that we always ignore numerics sent |
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* to 'me' and simply drop the message if we can't handle with this properly: |
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* the savvy approach is NEVER generate an error in response to an... error :) |
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*/ |
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static void |
| 190 |
parse_handle_numeric(unsigned int numeric, struct Client *source_p, int parc, char *parv[]) |
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{ |
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struct Client *target_p = NULL; |
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struct Channel *chptr = NULL; |
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|
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/* |
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* Avoid trash, we need it to come from a server and have a target |
| 197 |
*/ |
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if (parc < 2 || !IsServer(source_p)) |
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return; |
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|
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/* |
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* Who should receive this message ? Will we do something with it ? |
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* Note that we use findUser functions, so the target can't be neither |
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* a server, nor a channel (?) nor a list of targets (?) .. u2.10 |
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* should never generate numeric replies to non-users anyway |
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* Ahem... it can be a channel actually, csc bots use it :\ --Nem |
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*/ |
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if (IsChanPrefix(*parv[1])) |
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chptr = hash_find_channel(parv[1]); |
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else |
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target_p = find_person(source_p, parv[1]); |
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|
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if (((!target_p) || (target_p->from == source_p->from)) && !chptr) |
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return; |
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|
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/* |
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* Remap low number numerics, not that I understand WHY.. --Nemesi |
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*/ |
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/* |
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* Numerics below 100 talk about the current 'connection', you're not |
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* connected to a remote server so it doesn't make sense to send them |
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* remotely - but the information they contain may be useful, so we |
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* remap them up. Weird, but true. -- Isomer |
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*/ |
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if (numeric < 100) |
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numeric += 100; |
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|
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if (target_p) |
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{ |
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/* Fake it for server hiding, if it's our client */ |
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if ((ConfigServerHide.hide_servers || IsHidden(source_p)) && MyConnect(target_p) && |
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!HasUMode(target_p, UMODE_OPER)) |
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sendto_one_numeric(target_p, &me, numeric|SND_EXPLICIT, "%s", parv[2]); |
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else |
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sendto_one_numeric(target_p, source_p, numeric|SND_EXPLICIT, "%s", parv[2]); |
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} |
| 237 |
else |
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sendto_channel_butone(source_p, source_p, chptr, 0, "%u %s %s", |
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numeric, chptr->chname, parv[2]); |
| 240 |
} |
| 241 |
|
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/* handle_command() |
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* |
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* inputs - pointer to message block |
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* - pointer to client |
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* - pointer to client message is from |
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* - count of number of args |
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* - pointer to argv[] array |
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* output - -1 if error from server |
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* side effects - |
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*/ |
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static void |
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parse_handle_command(struct Message *mptr, struct Client *source_p, |
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unsigned int i, char *para[]) |
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{ |
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if (IsServer(source_p->from)) |
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++mptr->rcount; |
| 258 |
|
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++mptr->count; |
| 260 |
|
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/* Check right amount of parameters is passed... --is */ |
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if (i < mptr->args_min) |
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sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, mptr->cmd); |
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else |
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mptr->handlers[source_p->from->handler](source_p, i, para); |
| 266 |
} |
| 267 |
|
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/* |
| 269 |
* parse a buffer. |
| 270 |
* |
| 271 |
* NOTE: parse() should not be called recusively by any other functions! |
| 272 |
*/ |
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void |
| 274 |
parse(struct Client *client_p, char *pbuffer, char *bufend) |
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{ |
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struct Client *from = client_p; |
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struct Message *msg_ptr = NULL; |
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char *para[MAXPARA + 2]; /* <command> + <parameters> + NULL */ |
| 279 |
char *ch = NULL; |
| 280 |
char *s = NULL; |
| 281 |
unsigned int numeric = 0; |
| 282 |
unsigned int parc = 0; |
| 283 |
unsigned int paramcount; |
| 284 |
|
| 285 |
if (IsDefunct(client_p)) |
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return; |
| 287 |
|
| 288 |
assert(client_p->localClient->fd.flags.open); |
| 289 |
assert((bufend - pbuffer) < IRCD_BUFSIZE); |
| 290 |
|
| 291 |
for (ch = pbuffer; *ch == ' '; ++ch) /* Skip spaces */ |
| 292 |
; |
| 293 |
|
| 294 |
if (*ch == ':') |
| 295 |
{ |
| 296 |
/* |
| 297 |
* Copy the prefix to 'sender' assuming it terminates |
| 298 |
* with SPACE (or NULL, which is an error, though). |
| 299 |
*/ |
| 300 |
char *sender = ++ch; |
| 301 |
|
| 302 |
if ((s = strchr(ch, ' '))) |
| 303 |
{ |
| 304 |
*s = '\0'; |
| 305 |
ch = ++s; |
| 306 |
} |
| 307 |
|
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if (*sender && IsServer(client_p)) |
| 309 |
{ |
| 310 |
if ((from = find_person(client_p, sender)) == NULL) |
| 311 |
from = hash_find_server(sender); |
| 312 |
|
| 313 |
/* |
| 314 |
* Hmm! If the client corresponding to the prefix is not found--what is |
| 315 |
* the correct action??? Now, I will ignore the message (old IRC just |
| 316 |
* let it through as if the prefix just wasn't there...) --msa |
| 317 |
*/ |
| 318 |
if (from == NULL) |
| 319 |
{ |
| 320 |
++ServerStats.is_unpf; |
| 321 |
parse_remove_unknown(client_p, sender, pbuffer); |
| 322 |
return; |
| 323 |
} |
| 324 |
|
| 325 |
if (from->from != client_p) |
| 326 |
{ |
| 327 |
++ServerStats.is_wrdi; |
| 328 |
parse_cancel_clients(client_p, from, pbuffer); |
| 329 |
return; |
| 330 |
} |
| 331 |
} |
| 332 |
|
| 333 |
while (*ch == ' ') |
| 334 |
++ch; |
| 335 |
} |
| 336 |
|
| 337 |
if (*ch == '\0') |
| 338 |
{ |
| 339 |
++ServerStats.is_empt; |
| 340 |
return; |
| 341 |
} |
| 342 |
|
| 343 |
/* |
| 344 |
* Extract the command code from the packet. Point s to the end |
| 345 |
* of the command code and calculate the length using pointer |
| 346 |
* arithmetic. Note: only need length for numerics and *all* |
| 347 |
* numerics must have parameters and thus a space after the command |
| 348 |
* code. -avalon |
| 349 |
*/ |
| 350 |
|
| 351 |
/* EOB is 3 characters long but is not a numeric */ |
| 352 |
if (*(ch + 3) == ' ' && /* Ok, let's see if it's a possible numeric */ |
| 353 |
IsDigit(*ch) && IsDigit(*(ch + 1)) && IsDigit(*(ch + 2))) |
| 354 |
{ |
| 355 |
numeric = (*ch - '0') * 100 + (*(ch + 1) - '0') * 10 + (*(ch + 2) - '0'); |
| 356 |
paramcount = 2; /* Destination, and the rest of it */ |
| 357 |
++ServerStats.is_num; |
| 358 |
s = ch + 3; /* I know this is ' ' from above if */ |
| 359 |
*s++ = '\0'; /* Blow away the ' ', and point s to next part */ |
| 360 |
} |
| 361 |
else |
| 362 |
{ |
| 363 |
unsigned int ii = 0; |
| 364 |
|
| 365 |
if ((s = strchr(ch, ' '))) |
| 366 |
*s++ = '\0'; |
| 367 |
|
| 368 |
if ((msg_ptr = find_command(ch)) == NULL) |
| 369 |
{ |
| 370 |
/* |
| 371 |
* Note: Give error message *only* to recognized |
| 372 |
* persons. It's a nightmare situation to have |
| 373 |
* two programs sending "Unknown command"'s or |
| 374 |
* equivalent to each other at full blast.... |
| 375 |
* If it has got to person state, it at least |
| 376 |
* seems to be well behaving. Perhaps this message |
| 377 |
* should never be generated, though... --msa |
| 378 |
* Hm, when is the buffer empty -- if a command |
| 379 |
* code has been found ?? -Armin |
| 380 |
*/ |
| 381 |
if (*pbuffer) |
| 382 |
if (IsClient(from)) |
| 383 |
sendto_one_numeric(from, &me, ERR_UNKNOWNCOMMAND, ch); |
| 384 |
|
| 385 |
++ServerStats.is_unco; |
| 386 |
return; |
| 387 |
} |
| 388 |
|
| 389 |
assert(msg_ptr->cmd); |
| 390 |
|
| 391 |
paramcount = msg_ptr->args_max; |
| 392 |
ii = bufend - ((s) ? s : ch); |
| 393 |
msg_ptr->bytes += ii; |
| 394 |
} |
| 395 |
|
| 396 |
/* |
| 397 |
* Must the following loop really be so devious? On surface it |
| 398 |
* splits the message to parameters from blank spaces. But, if |
| 399 |
* paramcount has been reached, the rest of the message goes into |
| 400 |
* this last parameter (about same effect as ":" has...) --msa |
| 401 |
*/ |
| 402 |
|
| 403 |
/* Note initially true: s == NULL || *(s - 1) == '\0' !! */ |
| 404 |
|
| 405 |
para[parc] = ch; |
| 406 |
|
| 407 |
if (s) |
| 408 |
{ |
| 409 |
if (paramcount > MAXPARA) |
| 410 |
paramcount = MAXPARA; |
| 411 |
|
| 412 |
while (1) |
| 413 |
{ |
| 414 |
while (*s == ' ') |
| 415 |
*s++ = '\0'; |
| 416 |
|
| 417 |
if (*s == '\0') |
| 418 |
break; |
| 419 |
|
| 420 |
if (*s == ':') |
| 421 |
{ |
| 422 |
/* The rest is a single parameter */ |
| 423 |
para[++parc] = s + (!numeric); /* Keep the colon if it's a numeric */ |
| 424 |
break; |
| 425 |
} |
| 426 |
|
| 427 |
para[++parc] = s; |
| 428 |
|
| 429 |
if (parc >= paramcount) |
| 430 |
break; |
| 431 |
|
| 432 |
while (*s && *s != ' ') |
| 433 |
++s; |
| 434 |
} |
| 435 |
} |
| 436 |
|
| 437 |
para[++parc] = NULL; |
| 438 |
|
| 439 |
if (msg_ptr) |
| 440 |
parse_handle_command(msg_ptr, from, parc, para); |
| 441 |
else |
| 442 |
parse_handle_numeric(numeric, from, parc, para); |
| 443 |
} |
| 444 |
|
| 445 |
/* add_msg_element() |
| 446 |
* |
| 447 |
* inputs - pointer to MessageTree |
| 448 |
* - pointer to Message to add for given command |
| 449 |
* - pointer to current portion of command being added |
| 450 |
* output - NONE |
| 451 |
* side effects - recursively build the Message Tree ;-) |
| 452 |
*/ |
| 453 |
/* |
| 454 |
* How this works. |
| 455 |
* |
| 456 |
* The code first checks to see if its reached the end of the command |
| 457 |
* If so, that struct MessageTree has a msg pointer updated and the links |
| 458 |
* count incremented, since a msg pointer is a reference. |
| 459 |
* Then the code descends recursively, building the trie. |
| 460 |
* If a pointer index inside the struct MessageTree is NULL a new |
| 461 |
* child struct MessageTree has to be allocated. |
| 462 |
* The links (reference count) is incremented as they are created |
| 463 |
* in the parent. |
| 464 |
*/ |
| 465 |
static void |
| 466 |
add_msg_element(struct MessageTree *mtree_p, struct Message *msg_p, |
| 467 |
const char *cmd) |
| 468 |
{ |
| 469 |
struct MessageTree *ntree_p = NULL; |
| 470 |
|
| 471 |
if (*cmd == '\0') |
| 472 |
{ |
| 473 |
mtree_p->msg = msg_p; |
| 474 |
mtree_p->links++; /* Have msg pointer, so up ref count */ |
| 475 |
} |
| 476 |
else |
| 477 |
{ |
| 478 |
/* |
| 479 |
* *cmd & (MAXPTRLEN-1) |
| 480 |
* convert the char pointed to at *cmd from ASCII to an integer |
| 481 |
* between 0 and MAXPTRLEN. |
| 482 |
* Thus 'A' -> 0x1 'B' -> 0x2 'c' -> 0x3 etc. |
| 483 |
*/ |
| 484 |
if ((ntree_p = mtree_p->pointers[*cmd & (MAXPTRLEN - 1)]) == NULL) |
| 485 |
{ |
| 486 |
ntree_p = MyCalloc(sizeof(struct MessageTree)); |
| 487 |
mtree_p->pointers[*cmd & (MAXPTRLEN - 1)] = ntree_p; |
| 488 |
|
| 489 |
mtree_p->links++; /* Have new pointer, so up ref count */ |
| 490 |
} |
| 491 |
|
| 492 |
add_msg_element(ntree_p, msg_p, cmd + 1); |
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
/* del_msg_element() |
| 497 |
* |
| 498 |
* inputs - Pointer to MessageTree to delete from |
| 499 |
* - pointer to command name to delete |
| 500 |
* output - NONE |
| 501 |
* side effects - recursively deletes a token from the Message Tree ;-) |
| 502 |
*/ |
| 503 |
/* |
| 504 |
* How this works. |
| 505 |
* |
| 506 |
* Well, first off, the code recursively descends into the trie |
| 507 |
* until it finds the terminating letter of the command being removed. |
| 508 |
* Once it has done that, it marks the msg pointer as NULL then |
| 509 |
* reduces the reference count on that allocated struct MessageTree |
| 510 |
* since a command counts as a reference. |
| 511 |
* |
| 512 |
* Then it pops up the recurse stack. As it comes back up the recurse |
| 513 |
* The code checks to see if the child now has no pointers or msg |
| 514 |
* i.e. the links count has gone to zero. If it's no longer used, the |
| 515 |
* child struct MessageTree can be deleted. The parent reference |
| 516 |
* to this child is then removed and the parents link count goes down. |
| 517 |
* Thus, we continue to go back up removing all unused MessageTree(s) |
| 518 |
*/ |
| 519 |
static void |
| 520 |
del_msg_element(struct MessageTree *mtree_p, const char *cmd) |
| 521 |
{ |
| 522 |
struct MessageTree *ntree_p = NULL; |
| 523 |
|
| 524 |
/* |
| 525 |
* In case this is called for a nonexistent command |
| 526 |
* check that there is a msg pointer here, else links-- goes -ve |
| 527 |
* -db |
| 528 |
*/ |
| 529 |
if (*cmd == '\0' && mtree_p->msg) |
| 530 |
{ |
| 531 |
mtree_p->msg = NULL; |
| 532 |
mtree_p->links--; |
| 533 |
} |
| 534 |
else |
| 535 |
{ |
| 536 |
if ((ntree_p = mtree_p->pointers[*cmd & (MAXPTRLEN - 1)])) |
| 537 |
{ |
| 538 |
del_msg_element(ntree_p, cmd + 1); |
| 539 |
|
| 540 |
if (ntree_p->links == 0) |
| 541 |
{ |
| 542 |
mtree_p->pointers[*cmd & (MAXPTRLEN - 1)] = NULL; |
| 543 |
mtree_p->links--; |
| 544 |
MyFree(ntree_p); |
| 545 |
} |
| 546 |
} |
| 547 |
} |
| 548 |
} |
| 549 |
|
| 550 |
/* msg_tree_parse() |
| 551 |
* |
| 552 |
* inputs - Pointer to command to find |
| 553 |
* - Pointer to MessageTree root |
| 554 |
* output - Find given command returning Message * if found NULL if not |
| 555 |
* side effects - none |
| 556 |
*/ |
| 557 |
static struct Message * |
| 558 |
msg_tree_parse(const char *cmd) |
| 559 |
{ |
| 560 |
struct MessageTree *mtree = &msg_tree; |
| 561 |
|
| 562 |
assert(cmd && *cmd); |
| 563 |
|
| 564 |
while (IsAlpha(*cmd) && (mtree = mtree->pointers[*cmd & (MAXPTRLEN - 1)])) |
| 565 |
if (*++cmd == '\0') |
| 566 |
return mtree->msg; |
| 567 |
|
| 568 |
return NULL; |
| 569 |
} |
| 570 |
|
| 571 |
/* mod_add_cmd() |
| 572 |
* |
| 573 |
* inputs - pointer to struct Message |
| 574 |
* output - none |
| 575 |
* side effects - load this one command name |
| 576 |
*/ |
| 577 |
void |
| 578 |
mod_add_cmd(struct Message *msg) |
| 579 |
{ |
| 580 |
assert(msg && msg->cmd); |
| 581 |
|
| 582 |
/* Command already added? */ |
| 583 |
if (msg_tree_parse(msg->cmd)) |
| 584 |
return; |
| 585 |
|
| 586 |
add_msg_element(&msg_tree, msg, msg->cmd); |
| 587 |
} |
| 588 |
|
| 589 |
/* mod_del_cmd() |
| 590 |
* |
| 591 |
* inputs - pointer to struct Message |
| 592 |
* output - none |
| 593 |
* side effects - unload this one command name |
| 594 |
*/ |
| 595 |
void |
| 596 |
mod_del_cmd(struct Message *msg) |
| 597 |
{ |
| 598 |
assert(msg && msg->cmd); |
| 599 |
|
| 600 |
if (!msg_tree_parse(msg->cmd)) |
| 601 |
return; |
| 602 |
|
| 603 |
del_msg_element(&msg_tree, msg->cmd); |
| 604 |
} |
| 605 |
|
| 606 |
/* find_command() |
| 607 |
* |
| 608 |
* inputs - command name |
| 609 |
* output - pointer to struct Message |
| 610 |
* side effects - none |
| 611 |
*/ |
| 612 |
struct Message * |
| 613 |
find_command(const char *cmd) |
| 614 |
{ |
| 615 |
return msg_tree_parse(cmd); |
| 616 |
} |
| 617 |
|
| 618 |
static void |
| 619 |
recurse_report_messages(struct Client *source_p, const struct MessageTree *mtree) |
| 620 |
{ |
| 621 |
if (mtree->msg) |
| 622 |
sendto_one_numeric(source_p, &me, RPL_STATSCOMMANDS, |
| 623 |
mtree->msg->cmd, |
| 624 |
mtree->msg->count, mtree->msg->bytes, |
| 625 |
mtree->msg->rcount); |
| 626 |
|
| 627 |
for (unsigned int i = 0; i < MAXPTRLEN; ++i) |
| 628 |
if (mtree->pointers[i]) |
| 629 |
recurse_report_messages(source_p, mtree->pointers[i]); |
| 630 |
} |
| 631 |
|
| 632 |
/* report_messages() |
| 633 |
* |
| 634 |
* inputs - pointer to client to report to |
| 635 |
* output - NONE |
| 636 |
* side effects - client is shown list of commands |
| 637 |
*/ |
| 638 |
void |
| 639 |
report_messages(struct Client *source_p) |
| 640 |
{ |
| 641 |
const struct MessageTree *mtree = &msg_tree; |
| 642 |
|
| 643 |
for (unsigned int i = 0; i < MAXPTRLEN; ++i) |
| 644 |
if (mtree->pointers[i]) |
| 645 |
recurse_report_messages(source_p, mtree->pointers[i]); |
| 646 |
} |
| 647 |
|
| 648 |
/* m_not_oper() |
| 649 |
* inputs - |
| 650 |
* output - |
| 651 |
* side effects - just returns a nastyogram to given user |
| 652 |
*/ |
| 653 |
int |
| 654 |
m_not_oper(struct Client *source_p, int parc, char *parv[]) |
| 655 |
{ |
| 656 |
sendto_one_numeric(source_p, &me, ERR_NOPRIVILEGES); |
| 657 |
return 0; |
| 658 |
} |
| 659 |
|
| 660 |
int |
| 661 |
m_unregistered(struct Client *source_p, int parc, char *parv[]) |
| 662 |
{ |
| 663 |
sendto_one_numeric(source_p, &me, ERR_NOTREGISTERED); |
| 664 |
return 0; |
| 665 |
} |
| 666 |
|
| 667 |
int |
| 668 |
m_registered(struct Client *source_p, int parc, char *parv[]) |
| 669 |
{ |
| 670 |
sendto_one_numeric(source_p, &me, ERR_ALREADYREGISTRED); |
| 671 |
return 0; |
| 672 |
} |
| 673 |
|
| 674 |
int |
| 675 |
m_ignore(struct Client *source_p, int parc, char *parv[]) |
| 676 |
{ |
| 677 |
return 0; |
| 678 |
} |
