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chmode: Generate a canonical mode string

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Primarily because I want to use it in tests, but it also means people
reading override snotes don't have as much mental overhead. I hope.
This commit is contained in:
Ed Kellett 2020-11-06 14:00:06 +00:00
parent ea41b24fd4
commit 047b56e70e
1 changed files with 33 additions and 4 deletions
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37
ircd/chmode.c
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@ -1372,7 +1372,7 @@ void
set_channel_mode(struct Client *client_p, struct Client *source_p,
struct Channel *chptr, struct membership *msptr, int parc, const char *parv[])
{
static char modebuf[BUFSIZE];
static char modebuf[BUFSIZE * 2]; /* paranoid case: 2 canonical chars per input char */
static char parabuf[BUFSIZE];
char *mbuf;
char *pbuf;
@ -1409,6 +1409,9 @@ set_channel_mode(struct Client *client_p, struct Client *source_p,
static struct modeset modesets[MAXPARA];
struct modeset *ms = modesets, *mend;
char canon_op = '\0';
mbuf = modebuf;
for (ml = parv[0]; *ml != 0; ml++)
{
@ -1453,8 +1456,18 @@ set_channel_mode(struct Client *client_p, struct Client *source_p,
* does nothing for a query on a mode with no query. would it be
* good to send an error here?
*/
continue;
}
char op = effective_dir == MODE_ADD ? '+' :
effective_dir == MODE_DEL ? '-' :
'=';
if (op != canon_op)
*mbuf++ = canon_op = op;
*mbuf++ = c;
if (effective_dir != MODE_QUERY && access_dir == MODE_QUERY)
access_dir = effective_dir;
if (effective_dir == MODE_QUERY && cm->flags & CHM_OPS_QUERY)
@ -1472,6 +1485,13 @@ set_channel_mode(struct Client *client_p, struct Client *source_p,
}
}
/* this will happen on something like MODE +-=++-.
* we'd have caught that with the if !mode_count
* later on, but this saves an override notice
*/
if (ms == modesets)
return;
if (parn < parc)
{
/* XXX we could reject excess params here */
@ -1479,7 +1499,16 @@ set_channel_mode(struct Client *client_p, struct Client *source_p,
mend = ms;
alevel = get_channel_access(source_p, chptr, msptr, access_dir, reconstruct_parv(parc, parv));
if (parn > 1)
{
strcpy(mbuf, " ");
rb_strlcat(modebuf, reconstruct_parv(parn - 1, parv + 1), sizeof modebuf);
}
else
{
*mbuf = '\0';
}
alevel = get_channel_access(source_p, chptr, msptr, access_dir, modebuf);
for (ms = modesets; ms < mend; ms++)
{
@ -1490,10 +1519,10 @@ set_channel_mode(struct Client *client_p, struct Client *source_p,
}
/* bail out if we have nothing to do... */
if(!mode_count)
if (!mode_count)
return;
if(IsServer(source_p))
if (IsServer(source_p))
mlen = sprintf(modebuf, ":%s MODE %s ", fakesource_p->name, chptr->chname);
else
mlen = sprintf(modebuf, ":%s!%s@%s MODE %s ",