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/* |
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* parse.C: Parsing of IRC messages. |
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* Rights to this code are documented in doc/pod/license.pod. |
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* |
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* Copyright © 2005-2007 Atheme Project (http://www.atheme.org) |
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*/ |
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|
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static char const rcsid[] = "$Id: parse.C,v 1.3 2007-07-21 13:23:22 pippijn Exp $"; |
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|
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#include "atheme.h" |
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#include "uplink.h" |
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#include "pmodule.h" |
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|
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/* by default, we want the 2.8.21 parser */ |
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void (*parse) (char *line) = &irc_parse; |
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|
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/* parses a standard 2.8.21 style IRC stream */ |
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void |
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irc_parse (char *line) |
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{ |
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sourceinfo_t si; |
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char *pos; |
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char *origin = NULL; |
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char *command = NULL; |
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char *message = NULL; |
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char *parv[MAXPARC + 1]; |
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static char coreLine[BUFSIZE]; |
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int parc = 0; |
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unsigned int i; |
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pcommand_t const *pcmd; |
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|
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/* clear the parv */ |
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for (i = 0; i <= MAXPARC; i++) |
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parv[i] = NULL; |
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|
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memset (&si, '\0', sizeof si); |
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si.connection = curr_uplink->conn; |
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|
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if (line != NULL) |
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{ |
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/* sometimes we'll get a blank line with just a \n on it... |
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* catch those here... they'll core us later on if we don't |
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*/ |
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if (*line == '\n') |
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return; |
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if (*line == '\000') |
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return; |
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|
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/* copy the original line so we know what we crashed on */ |
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memset ((char *) &coreLine, '\0', BUFSIZE); |
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strlcpy (coreLine, line, BUFSIZE); |
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|
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slog (LG_RAWDATA, "-> %s", line); |
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|
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/* find the first space */ |
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if ((pos = strchr (line, ' '))) |
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{ |
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*pos = '\0'; |
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pos++; |
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/* if it starts with a : we have a prefix/origin |
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* pull the origin off into `origin', and have pos for the |
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* command, message will be the part afterwards |
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*/ |
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if (*line == ':') |
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{ |
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origin = line + 1; |
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|
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si.s = server_find (origin); |
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si.su = user_find (origin); |
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|
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if ((message = strchr (pos, ' '))) |
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{ |
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*message = '\0'; |
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message++; |
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command = pos; |
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} |
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else |
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{ |
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command = pos; |
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message = NULL; |
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} |
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} |
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else |
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{ |
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if (me.recvsvr) |
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{ |
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origin = me.actual; |
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si.s = server_find (origin); |
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} |
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message = pos; |
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command = line; |
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} |
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} |
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else |
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{ |
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if (me.recvsvr) |
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{ |
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origin = me.actual; |
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si.s = server_find (origin); |
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} |
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command = line; |
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message = NULL; |
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} |
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if (!si.s && !si.su && me.recvsvr) |
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{ |
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slog (LG_INFO, "irc_parse(): got message from nonexistant user or server: %s", origin); |
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return; |
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} |
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si.smu = si.su != NULL ? si.su->myuser : NULL; |
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|
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/* okay, the nasty part is over, now we need to make a |
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* parv out of what's left |
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*/ |
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|
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if (message) |
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{ |
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if (*message == ':') |
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{ |
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message++; |
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parv[0] = message; |
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parc = 1; |
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} |
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else |
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parc = tokenize (message, parv); |
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} |
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else |
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parc = 0; |
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|
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/* now we should have origin (or NULL), command, and a parv |
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* with it's accompanying parc... let's make ABSOLUTELY sure |
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*/ |
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if (!command) |
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{ |
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slog (LG_DEBUG, "irc_parse(): command not found: %s", coreLine); |
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return; |
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} |
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|
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/* take the command through the hash table */ |
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if ((pcmd = pcommand_find (command))) |
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{ |
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if (si.su && !(pcmd->sourcetype & MSRC_USER)) |
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{ |
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slog (LG_INFO, "irc_parse(): user %s sent disallowed command %s", si.su->nick, pcmd->token); |
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return; |
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} |
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else if (si.s && !(pcmd->sourcetype & MSRC_SERVER)) |
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{ |
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slog (LG_INFO, "irc_parse(): server %s sent disallowed command %s", si.s->name, pcmd->token); |
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return; |
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} |
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else if (!me.recvsvr && !(pcmd->sourcetype & MSRC_UNREG)) |
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{ |
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slog (LG_INFO, "irc_parse(): unregistered server sent disallowed command %s", pcmd->token); |
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return; |
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} |
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if (parc < pcmd->minparc) |
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{ |
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slog (LG_INFO, "irc_parse(): insufficient parameters for command %s", pcmd->token); |
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return; |
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} |
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if (pcmd->handler) |
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{ |
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pcmd->handler (&si, parc, parv); |
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} |
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} |
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} |
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} |
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|
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/* parses a P10 IRC stream */ |
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void |
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p10_parse (char *line) |
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{ |
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sourceinfo_t si; |
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char *pos; |
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char *origin = NULL; |
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char *command = NULL; |
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char *message = NULL; |
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char *parv[MAXPARC + 1]; |
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static char coreLine[BUFSIZE]; |
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int parc = 0; |
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unsigned int i; |
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pcommand_t const *pcmd; |
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|
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/* clear the parv */ |
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for (i = 0; i <= MAXPARC; i++) |
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parv[i] = NULL; |
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|
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memset (&si, '\0', sizeof si); |
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si.connection = curr_uplink->conn; |
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|
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if (line != NULL) |
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{ |
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/* sometimes we'll get a blank line with just a \n on it... |
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* catch those here... they'll core us later on if we don't |
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*/ |
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if (*line == '\n') |
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return; |
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if (*line == '\000') |
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return; |
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|
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/* copy the original line so we know what we crashed on */ |
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memset ((char *) &coreLine, '\0', BUFSIZE); |
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strlcpy (coreLine, line, BUFSIZE); |
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|
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slog (LG_RAWDATA, "-> %s", line); |
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|
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/* find the first spcae */ |
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if ((pos = strchr (line, ' '))) |
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{ |
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*pos = '\0'; |
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pos++; |
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/* if it starts with a : we have a prefix/origin |
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* pull the origin off into `origin', and have pos for the |
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* command, message will be the part afterwards |
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*/ |
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if (*line == ':' || me.recvsvr == true) |
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{ |
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origin = line; |
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if (*origin == ':') |
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{ |
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origin++; |
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si.s = server_find (origin); |
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si.su = user_find_named (origin); |
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} |
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else |
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{ |
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si.s = server_find (origin); |
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si.su = user_find (origin); |
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} |
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|
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if ((message = strchr (pos, ' '))) |
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{ |
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*message = '\0'; |
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message++; |
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command = pos; |
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} |
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else |
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{ |
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command = pos; |
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message = NULL; |
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} |
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} |
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else |
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{ |
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message = pos; |
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command = line; |
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} |
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} |
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|
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if (!si.s && !si.su && me.recvsvr) |
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{ |
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slog (LG_DEBUG, "irc_parse(): got message from nonexistant user or server: %s", origin); |
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return; |
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} |
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si.smu = si.su != NULL ? si.su->myuser : NULL; |
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|
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/* okay, the nasty part is over, now we need to make a |
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* parv out of what's left |
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*/ |
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|
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if (message) |
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{ |
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if (*message == ':') |
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{ |
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message++; |
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parv[0] = message; |
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parc = 1; |
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} |
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else |
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parc = tokenize (message, parv); |
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} |
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else |
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parc = 0; |
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|
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/* now we should have origin (or NULL), command, and a parv |
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* with it's accompanying parc... let's make ABSOLUTELY sure |
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*/ |
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if (!command) |
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{ |
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slog (LG_DEBUG, "irc_parse(): command not found: %s", coreLine); |
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return; |
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} |
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|
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/* take the command through the hash table */ |
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if ((pcmd = pcommand_find (command))) |
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{ |
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if (si.su && !(pcmd->sourcetype & MSRC_USER)) |
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{ |
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slog (LG_INFO, "irc_parse(): user %s sent disallowed command %s", si.su->nick, pcmd->token); |
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return; |
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} |
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else if (si.s && !(pcmd->sourcetype & MSRC_SERVER)) |
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{ |
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slog (LG_INFO, "irc_parse(): server %s sent disallowed command %s", si.s->name, pcmd->token); |
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return; |
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} |
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else if (!me.recvsvr && !(pcmd->sourcetype & MSRC_UNREG)) |
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{ |
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slog (LG_INFO, "irc_parse(): unregistered server sent disallowed command %s", pcmd->token); |
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return; |
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} |
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if (parc < pcmd->minparc) |
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{ |
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slog (LG_INFO, "irc_parse(): insufficient parameters for command %s", pcmd->token); |
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return; |
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} |
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if (pcmd->handler) |
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{ |
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pcmd->handler (&si, parc, parv); |
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return; |
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} |
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} |
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} |
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} |
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|
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/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs |
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* vim:ts=8 |
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* vim:sw=8 |
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* vim:noexpandtab |
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*/ |