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Code Issues Releases Wiki Activity

Fix command splitting when the channel list is too long

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This commit is contained in:
Berke Viktor 2013-05-14 18:20:05 +02:00
parent 947dd45294
commit 12cdb7704c
1 changed files with 39 additions and 125 deletions
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164
src/common/proto-irc.c
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@ -118,135 +118,31 @@ irc_join (server *serv, char *channel, char *key)
tcp_sendf (serv, "JOIN %s\r\n", channel); tcp_sendf (serv, "JOIN %s\r\n", channel);
} }
#if 0//FIXME remove when finished porting
static void static void
irc_join_list_flush (server *serv, GString *c, GString *k) irc_join_list_flush (server *serv, GString *channels, GString *keys)
{ {
char *chanstr, *keystr; char *chanstr;
char *keystr;
chanstr = g_string_free (channels, FALSE); /* convert our strings to char arrays */
keystr = g_string_free (keys, FALSE);
tcp_sendf (serv, "JOIN %s %s\r\n", chanstr, keystr); /* send the actual command */
chanstr = g_string_free (c, FALSE);
keystr = g_string_free (k, FALSE);
if (chanstr[0])
{
if (keystr[0])
tcp_sendf (serv, "JOIN %s %s\r\n", chanstr, keystr);
else
tcp_sendf (serv, "JOIN %s\r\n", chanstr);
}
g_free (chanstr); g_free (chanstr);
g_free (keystr); g_free (keystr);
} }
/* join a whole list of channels & keys, split to multiple lines /* Join a whole list of channels & keys, split to multiple lines
* to get around 512 limit */ * to get around the 512 limit.
*/
static void
irc_join_list (server *serv, GSList *channels, GSList *keys)
{
GSList *clist;
GSList *klist;
GString *c = g_string_new (NULL);
GString *k = g_string_new (NULL);
int len;
int add;
int i, j;
i = j = 0;
len = 9; /* "JOIN<space><space>\r\n" */
clist = channels;
klist = keys;
while (clist)
{
/* measure how many bytes this channel would add... */
if (1)
{
add = strlen (clist->data);
if (i != 0)
add++; /* comma */
}
if (klist->data)
{
add += strlen (klist->data);
}
else
{
add++; /* 'x' filler */
}
if (j != 0)
add++; /* comma */
/* too big? dump buffer and start a fresh one */
if (len + add > 512)
{
irc_join_list_flush (serv, c, k);
c = g_string_new (NULL);
k = g_string_new (NULL);
i = j = 0;
len = 9;
}
/* now actually add it to our GStrings */
if (1)
{
add = strlen (clist->data);
if (i != 0)
{
add++;
g_string_append_c (c, ',');
}
g_string_append (c, clist->data);
i++;
}
if (klist->data)
{
add += strlen (klist->data);
if (j != 0)
{
add++;
g_string_append_c (k, ',');
}
g_string_append (k, klist->data);
j++;
}
else
{
add++;
if (j != 0)
{
add++;
g_string_append_c (k, ',');
}
g_string_append_c (k, 'x');
j++;
}
len += add;
klist = klist->next;
clist = clist->next;
}
irc_join_list_flush (serv, c, k);
#endif
static void
irc_join_list_flush (server *serv)
{
/* FIXME implement flushing for too long favorites lists */
}
static void static void
irc_join_list (server *serv, GSList *favorites) irc_join_list (server *serv, GSList *favorites)
{ {
int first_item = 1; int first_item = 1; /* determine whether we add commas or not */
int len = 9; /* JOIN<space>channels<space>keys\r\n\0 */
favchannel *fav; favchannel *fav;
char *chanstr;
char *keystr;
GString *chanlist = g_string_new (NULL); GString *chanlist = g_string_new (NULL);
GString *keylist = g_string_new (NULL); GString *keylist = g_string_new (NULL);
GSList *favlist; GSList *favlist;
@ -257,9 +153,33 @@ irc_join_list (server *serv, GSList *favorites)
{ {
fav = favlist->data; fav = favlist->data;
len += strlen (fav->name);
if (fav->key)
{
len += strlen (fav->key);
}
if (len >= 512) /* command length exceeds the IRC hard limit, flush it and start from scratch */
{
irc_join_list_flush (serv, chanlist, keylist);
chanlist = g_string_new (NULL);
keylist = g_string_new (NULL);
len = 9;
first_item = 1; /* list dumped, omit commas once again */
}
if (!first_item) if (!first_item)
{ {
g_string_append_c (chanlist, ','); /* add separators but only if it's not the 1st element */ /* This should be done before the length check, but channel names
* are already at least 2 characters long so it would trigger the
* flush anyway.
*/
len += 2;
/* add separators but only if it's not the 1st element */
g_string_append_c (chanlist, ',');
g_string_append_c (keylist, ','); g_string_append_c (keylist, ',');
} }
@ -278,13 +198,7 @@ irc_join_list (server *serv, GSList *favorites)
favlist = favlist->next; favlist = favlist->next;
} }
chanstr = g_string_free (chanlist, FALSE); /* convert our strings to char arrays */ irc_join_list_flush (serv, chanlist, keylist);
keystr = g_string_free (keylist, FALSE);
tcp_sendf (serv, "JOIN %s %s\r\n", chanstr, keystr); /* send the actual command */
g_free (chanstr); /* cleanup */
g_free (keystr);
g_slist_free (favlist); g_slist_free (favlist);
} }