/** Mark servers whose name matches the given (compiled) mask by
* setting their FLAG_MAP flag.
* @param[in] cmask Compiled mask for server names.
* @param[in] minlen Minimum match length for \a cmask.
* @return Number of servers marked.
*/
int markMatchexServer(const char *cmask, int minlen)
{
int cnt = 0;
int i;
struct Client *acptr;
for (i = 0; i < lastNNServer; i++) {
if ((acptr = server_list[i]))
{
if (matchexec(cli_name(acptr), cmask, minlen))
ClrFlag(acptr, FLAG_MAP);
else
{
SetFlag(acptr, FLAG_MAP);
cnt++;
}
}
}
return cnt;
}
/*
* m_who - generic message handler
*
* parv[0] = sender prefix
* parv[1] = nickname mask list
* parv[2] = additional selection flag, only 'o' for now.
* and %flags to specify what fields to output
* plus a ,querytype if the t flag is specified
* so the final thing will be like o%tnchu,777
* parv[3] = _optional_ parameter that overrides parv[1]
* This can be used as "/quote who foo % :The Black Hacker
* to find me, parv[3] _can_ contain spaces !.
*/
int m_who(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
char *mask; /* The mask we are looking for */
char ch; /* Scratch char register */
struct Channel *chptr; /* Channel to show */
struct Client *acptr; /* Client to show */
int bitsel; /* Mask of selectors to apply */
int matchsel; /* Wich fields the match should apply on */
int counter; /* Query size counter,
initially used to count fields */
int commas; /* Does our mask contain any comma ?
If so is a list.. */
int fields; /* Mask of fields to show */
int isthere = 0; /* When this set the user is member of chptr */
char *nick; /* Single element extracted from
the mask list */
char *p; /* Scratch char pointer */
char *qrt; /* Pointer to the query type */
static char mymask[512]; /* To save the mask before corrupting it */
unsigned int who_marker; /* Used to mark clients we've touched */
/* Let's find where is our mask, and if actually contains something */
mask = ((parc > 1) ? parv[1] : 0);
if (parc > 3 && parv[3])
mask = parv[3];
if (mask && ((mask[0] == '\0') ||
(mask[1] == '\0' && ((mask[0] == '0') || (mask[0] == '*')))))
mask = 0;
/* Evaluate the flags now, we consider the second parameter
as "matchFlags%fieldsToInclude,querytype" */
bitsel = fields = counter = matchsel = 0;
qrt = 0;
if (parc > 2 && parv[2] && *parv[2])
{
p = parv[2];
while (((ch = *(p++))) && (ch != '%') && (ch != ','))
switch (ch)
{
case 'o':
case 'O':
bitsel |= WHOSELECT_OPER;
continue;
case 'x':
case 'X':
if (HasPriv(sptr, PRIV_WHOX))
{
log_write(LS_WHO, L_INFO, LOG_NOSNOTICE, "%#C WHO %s %s", sptr,
(BadPtr(parv[3]) ? parv[1] : parv[3]), parv[2]);
bitsel |= WHOSELECT_EXTRA;
}
continue;
case 'n':
case 'N':
matchsel |= WHO_FIELD_NIC;
continue;
case 'u':
case 'U':
matchsel |= WHO_FIELD_UID;
continue;
case 'h':
case 'H':
matchsel |= WHO_FIELD_HOS;
continue;
case 'i':
case 'I':
matchsel |= WHO_FIELD_NIP;
continue;
case 's':
case 'S':
matchsel |= WHO_FIELD_SER;
continue;
case 'r':
case 'R':
matchsel |= WHO_FIELD_REN;
continue;
case 'a':
case 'A':
matchsel |= WHO_FIELD_ACC;
continue;
}
if (ch == '%')
while ((ch = *p++) && (ch != ','))
{
counter++;
switch (ch)
{
case 'c':
case 'C':
fields |= WHO_FIELD_CHA;
break;
case 'd':
case 'D':
fields |= WHO_FIELD_DIS;
break;
case 'f':
case 'F':
fields |= WHO_FIELD_FLA;
break;
case 'h':
case 'H':
fields |= WHO_FIELD_HOS;
break;
case 'i':
case 'I':
fields |= WHO_FIELD_NIP;
break;
case 'l':
case 'L':
fields |= WHO_FIELD_IDL;
case 'n':
case 'N':
fields |= WHO_FIELD_NIC;
break;
case 'r':
case 'R':
fields |= WHO_FIELD_REN;
break;
case 's':
case 'S':
fields |= WHO_FIELD_SER;
break;
case 't':
case 'T':
fields |= WHO_FIELD_QTY;
break;
case 'u':
case 'U':
fields |= WHO_FIELD_UID;
break;
case 'a':
case 'A':
fields |= WHO_FIELD_ACC;
break;
default:
break;
}
};
if (ch)
qrt = p;
}
if (!matchsel)
matchsel = WHO_FIELD_DEF;
if (!fields)
counter = 7;
if (feature_bool(FEAT_HIS_WHO_SERVERNAME) && !IsAnOper(sptr))
matchsel &= ~WHO_FIELD_SER;
if (qrt && (fields & WHO_FIELD_QTY))
{
p = qrt;
if (!((*p > '9') || (*p < '0')))
p++;
if (!((*p > '9') || (*p < '0')))
p++;
if (!((*p > '9') || (*p < '0')))
p++;
*p = '\0';
}
else
qrt = 0;
/* I'd love to add also a check on the number of matches fields per time */
counter = (2048 / (counter + 4));
if (mask && (strlen(mask) > 510))
mask[510] = '\0';
who_marker = get_client_marker();
commas = (mask && strchr(mask, ','));
/* First treat mask as a list of plain nicks/channels */
if (mask)
{
strcpy(mymask, mask);
for (p = 0, nick = ircd_strtok(&p, mymask, ","); nick;
nick = ircd_strtok(&p, 0, ","))
{
if (IsChannelName(nick) && (chptr = FindChannel(nick)))
{
isthere = (find_channel_member(sptr, chptr) != 0);
if (isthere || SEE_CHANNEL(sptr, chptr, bitsel))
{
struct Membership* member;
for (member = chptr->members; member; member = member->next_member)
{
acptr = member->user;
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if ((acptr != sptr) && (member->status & CHFL_ZOMBIE))
continue;
if (!(isthere || (SEE_USER(sptr, acptr, bitsel))))
continue;
if (!Process(acptr)) /* This can't be moved before other checks */
continue;
if (!(isthere ||
(IsOper(sptr) && (bitsel & WHOSELECT_EXTRA) && HasPriv(sptr, PRIV_SEE_CHAN)) ||
(SHOW_MORE(sptr, counter))))
break;
do_who(sptr, acptr, chptr, fields, qrt);
}
}
}
else
{
if ((acptr = FindUser(nick)) &&
((!(bitsel & WHOSELECT_OPER)) || SeeOper(sptr,acptr)) &&
Process(acptr) && SHOW_MORE(sptr, counter))
{
do_who(sptr, acptr, 0, fields, qrt);
}
}
}
}
/* If we didn't have any comma in the mask treat it as a
real mask and try to match all relevant fields */
if (!(commas || (counter < 1)))
{
int minlen, cset;
static struct in_mask imask;
if (mask)
{
matchcomp(mymask, &minlen, &cset, mask);
if (matchcompIP(&imask, mask))
matchsel &= ~WHO_FIELD_NIP;
if ((minlen > NICKLEN) || !(cset & NTL_IRCNK))
matchsel &= ~WHO_FIELD_NIC;
if ((matchsel & WHO_FIELD_SER) &&
((minlen > HOSTLEN) || (!(cset & NTL_IRCHN))
|| (!markMatchexServer(mymask, minlen))))
matchsel &= ~WHO_FIELD_SER;
if ((minlen > USERLEN) || !(cset & NTL_IRCUI))
matchsel &= ~WHO_FIELD_UID;
if ((minlen > HOSTLEN) || !(cset & NTL_IRCHN))
matchsel &= ~WHO_FIELD_HOS;
}
/* First of all loop through the clients in common channels */
if ((!(counter < 1)) && matchsel) {
struct Membership* member;
struct Membership* chan;
for (chan = cli_user(sptr)->channel; chan; chan = chan->next_channel) {
chptr = chan->channel;
for (member = chptr->members; member; member = member->next_member)
{
acptr = member->user;
if (!(IsUser(acptr) && Process(acptr)))
continue; /* Now Process() is at the beginning, if we fail
we'll never have to show this acptr in this query */
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if ((mask) &&
((!(matchsel & WHO_FIELD_NIC))
|| matchexec(cli_name(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_UID))
|| matchexec(cli_user(acptr)->username, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_SER))
|| (!HasFlag(cli_user(acptr)->server, FLAG_MAP)))
&& ((!(matchsel & WHO_FIELD_HOS))
|| matchexec(cli_user(acptr)->host, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_HOS))
|| !HasSetHost(acptr)
|| !HasHiddenHost(acptr)
|| !IsAnOper(sptr)
|| matchexec(cli_user(acptr)->realhost, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_REN))
|| matchexec(cli_info(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_NIP))
|| ((HasHiddenHost(acptr) || HasSetHost(acptr)) && !IsAnOper(sptr))
|| ((((cli_ip(acptr).s_addr & imask.mask.s_addr) !=
imask.bits.s_addr)) || (imask.fall
&& matchexec(ircd_ntoa((const char*) &(cli_ip(acptr))), mymask, minlen)))))
continue;
if (!SHOW_MORE(sptr, counter))
break;
do_who(sptr, acptr, chptr, fields, qrt);
}
}
}
/* Loop through all clients :-\, if we still have something to match to
and we can show more clients */
if ((!(counter < 1)) && matchsel)
for (acptr = cli_prev(&me); acptr; acptr = cli_prev(acptr))
{
if (!(IsUser(acptr) && Process(acptr)))
continue;
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if (!(SEE_USER(sptr, acptr, bitsel)))
continue;
if ((mask) &&
((!(matchsel & WHO_FIELD_NIC))
|| matchexec(cli_name(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_UID))
|| matchexec(cli_user(acptr)->username, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_SER))
|| (!HasFlag(cli_user(acptr)->server, FLAG_MAP)))
&& ((!(matchsel & WHO_FIELD_HOS))
|| matchexec(cli_user(acptr)->host, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_HOS))
|| !HasSetHost(acptr)
|| !HasHiddenHost(acptr)
|| !IsAnOper(sptr)
|| matchexec(cli_user(acptr)->realhost, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_REN))
|| matchexec(cli_info(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_NIP))
|| (HasHiddenHost(acptr) && !IsAnOper(sptr))
|| ((((cli_ip(acptr).s_addr & imask.mask.s_addr) != imask.bits.s_addr))
|| (imask.fall
&& matchexec(ircd_ntoa((const char*) &(cli_ip(acptr))), mymask, minlen)))))
continue;
if (!SHOW_MORE(sptr, counter))
break;
do_who(sptr, acptr, 0, fields, qrt);
}
}
/* Make a clean mask suitable to be sent in the "end of" */
if (mask && (p = strchr(mask, ' ')))
*p = '\0';
send_reply(sptr, RPL_ENDOFWHO, BadPtr(mask) ? "*" : mask);
/* Notify the user if we decided that his query was too long */
if (counter < 0)
send_reply(sptr, ERR_QUERYTOOLONG, "WHO");
return 0;
}
