kike: hackplement channel MODE changes
This commit is contained in:
parent
8645f12f9f
commit
9d86d81851
318
src/kike.c
318
src/kike.c
@ -224,6 +224,12 @@ irc_is_valid_key (const char *key)
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#undef LE
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#undef SP
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static bool
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irc_is_valid_user_mask (const char *mask)
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{
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return irc_regex_match ("^[^!@]+![^!@]+@[^@!]+$", mask);
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}
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static bool
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irc_is_valid_fingerprint (const char *fp)
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{
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@ -934,7 +940,9 @@ enum
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IRC_ERR_NOTREGISTERED = 451,
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IRC_ERR_NEEDMOREPARAMS = 461,
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IRC_ERR_ALREADYREGISTERED = 462,
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IRC_ERR_KEYSET = 467,
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IRC_ERR_CHANNELISFULL = 471,
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IRC_ERR_UNKNOWNMODE = 472,
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IRC_ERR_INVITEONLYCHAN = 473,
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IRC_ERR_BANNEDFROMCHAN = 474,
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IRC_ERR_BADCHANNELKEY = 475,
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@ -1012,7 +1020,9 @@ static const char *g_default_replies[] =
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[IRC_ERR_NOTREGISTERED] = ":You have not registered",
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[IRC_ERR_NEEDMOREPARAMS] = "%s :Not enough parameters",
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[IRC_ERR_ALREADYREGISTERED] = ":Unauthorized command (already registered)",
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[IRC_ERR_KEYSET] = "%s :Channel key already set",
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[IRC_ERR_CHANNELISFULL] = "%s :Cannot join channel (+l)",
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[IRC_ERR_UNKNOWNMODE] = "%c :is unknown mode char to me for %s",
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[IRC_ERR_INVITEONLYCHAN] = "%s :Cannot join channel (+i)",
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[IRC_ERR_BANNEDFROMCHAN] = "%s :Cannot join channel (+b)",
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[IRC_ERR_BADCHANNELKEY] = "%s :Cannot join channel (+k)",
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@ -1329,43 +1339,15 @@ irc_channel_multicast (struct channel *chan, const char *message,
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}
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}
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static void
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irc_send_channel_list (struct client *c, const char *channel_name,
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const struct str_vector *list, int reply, int end_reply)
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{
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for (size_t i = 0; i < list->len; i++)
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irc_send_reply (c, reply, channel_name, list->vector[i]);
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irc_send_reply (c, end_reply);
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}
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static bool
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irc_maybe_send_channel_list (struct client *c, struct channel *chan,
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const char *mode_string)
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{
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if (*mode_string == '+')
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mode_string++;
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if (!strcmp (mode_string, "b"))
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irc_send_channel_list (c, chan->name, &chan->ban_list,
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IRC_RPL_BANLIST, IRC_RPL_ENDOFBANLIST);
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else if (!strcmp (mode_string, "e"))
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irc_send_channel_list (c, chan->name, &chan->exception_list,
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IRC_RPL_EXCEPTLIST, IRC_RPL_ENDOFEXCEPTLIST);
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else if (!strcmp (mode_string, "I"))
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irc_send_channel_list (c, chan->name, &chan->invite_list,
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IRC_RPL_INVITELIST, IRC_RPL_ENDOFINVITELIST);
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else
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return false;
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return true;
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}
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static void
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irc_modify_mode (unsigned *mask, unsigned mode, bool add)
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{
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unsigned orig = *mask;
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if (add)
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*mask |= mode;
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else
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*mask &= ~mode;
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return *mask != orig;
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}
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static void
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@ -1419,15 +1401,16 @@ irc_handle_user_mode_change (struct client *c, const char *mode_string)
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irc_modify_mode (&new_mode, IRC_USER_MODE_RX_WALLOPS, adding);
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break;
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case 'r':
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// It's not possible to un-restrict yourself
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if (adding)
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irc_modify_mode (&new_mode, IRC_USER_MODE_RESTRICTED, true);
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new_mode |= IRC_USER_MODE_RESTRICTED;
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break;
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case 'o':
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if (!adding)
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irc_modify_mode (&new_mode, IRC_USER_MODE_OPERATOR, false);
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new_mode &= ~IRC_USER_MODE_OPERATOR;
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else if (c->ssl_cert_fingerprint
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&& str_map_find (&c->ctx->operators, c->ssl_cert_fingerprint))
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irc_modify_mode (&new_mode, IRC_USER_MODE_OPERATOR, true);
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new_mode |= IRC_USER_MODE_OPERATOR;
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else
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irc_send (c, ":%s NOTICE %s :Either you're not using an SSL"
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" client certificate, or the fingerprint doesn't match",
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@ -1442,6 +1425,267 @@ irc_handle_user_mode_change (struct client *c, const char *mode_string)
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irc_update_user_mode (c, new_mode);
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}
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static void
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irc_send_channel_list (struct client *c, const char *channel_name,
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const struct str_vector *list, int reply, int end_reply)
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{
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for (size_t i = 0; i < list->len; i++)
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irc_send_reply (c, reply, channel_name, list->vector[i]);
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irc_send_reply (c, end_reply);
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}
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static char *
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irc_check_expand_user_mask (const char *mask)
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{
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struct str result;
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str_init (&result);
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str_append (&result, mask);
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// Make sure it is a complete mask
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if (!strchr (result.str, '!'))
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str_append (&result, "!*");
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if (!strchr (result.str, '@'))
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str_append (&result, "@*");
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// And validate whatever the result is
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if (!irc_is_valid_user_mask (result.str))
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{
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str_free (&result);
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return NULL;
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}
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return str_steal (&result);
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}
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static void
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irc_handle_chan_mode_change (struct client *c,
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struct channel *chan, char *params[])
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{
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struct channel_user *user = channel_get_user (chan, c);
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// This is by far the worst command to implement from the whole RFC;
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// don't blame me if it doesn't work exactly as expected.
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struct str added; struct str_vector added_params;
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struct str removed; struct str_vector removed_params;
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str_init (&added); str_vector_init (&added_params);
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str_init (&removed); str_vector_init (&removed_params);
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// TODO: try to convert this madness into functions; that will most
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// likely require creating a special parser class
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#define NEEDS_OPER \
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if (!user || (!(user->modes & IRC_CHAN_MODE_OPERATOR) \
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&& !(c->mode & IRC_USER_MODE_OPERATOR))) \
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{ \
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irc_send_reply (c, IRC_ERR_CHANOPRIVSNEEDED, chan->name); \
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continue; \
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}
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#define HANDLE_USER(mode) \
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if (!(target = *params)) \
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continue; \
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params++; \
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NEEDS_OPER \
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if (!(client = str_map_find (&c->ctx->users, target))) \
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irc_send_reply (c, IRC_ERR_NOSUCHNICK, target); \
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else if (!(target_user = channel_get_user (chan, client))) \
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irc_send_reply (c, IRC_ERR_USERNOTINCHANNEL, \
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target, chan->name); \
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else if (irc_modify_mode (&target_user->modes, (mode), adding)) \
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{ \
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str_append_c (output, mode_char); \
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str_vector_add (output_params, target_user->nickname); \
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}
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#define HANDLE_LIST(list, list_msg, end_msg) \
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{ \
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if (!(target = *params)) \
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{ \
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if (adding) \
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irc_send_channel_list (c, chan->name, list, list_msg, end_msg); \
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continue; \
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} \
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params++; \
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NEEDS_OPER \
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char *mask = irc_check_expand_user_mask (target); \
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if (!mask) \
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continue; \
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size_t i; \
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for (i = 0; i < (list)->len; i++) \
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if (!irc_strcmp ((list)->vector[i], mask)) \
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break; \
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if (!((i != (list)->len) ^ adding)) \
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{ \
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free (mask); \
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continue; \
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} \
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if (adding) \
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str_vector_add ((list), mask); \
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else \
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str_vector_remove ((list), i); \
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str_append_c (output, mode_char); \
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str_vector_add (output_params, mask); \
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free (mask); \
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}
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#define HANDLE_MODE(mode) \
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NEEDS_OPER \
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if (irc_modify_mode (&chan->modes, (mode), adding)) \
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str_append_c (output, mode_char);
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#define REMOVE_MODE(removed_mode, removed_char) \
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if (adding && irc_modify_mode (&chan->modes, (removed_mode), false)) \
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str_append_c (&removed, (removed_char));
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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const char *mode_string;
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while ((mode_string = *params++))
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{
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bool adding = true;
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struct str *output = &added;
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struct str_vector *output_params = &added_params;
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const char *target;
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struct channel_user *target_user;
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struct client *client;
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char mode_char;
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while (*mode_string)
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switch ((mode_char = *mode_string++))
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{
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case '+':
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adding = true;
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output = &added;
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output_params = &added_params;
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break;
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case '-':
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adding = false;
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output = &removed;
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output_params = &removed_params;
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break;
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case 'o': HANDLE_USER (IRC_CHAN_MODE_OPERATOR) break;
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case 'v': HANDLE_USER (IRC_CHAN_MODE_VOICE) break;
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case 'i': HANDLE_MODE (IRC_CHAN_MODE_INVITE_ONLY) break;
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case 'm': HANDLE_MODE (IRC_CHAN_MODE_MODERATED) break;
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case 'n': HANDLE_MODE (IRC_CHAN_MODE_NO_OUTSIDE_MSGS) break;
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case 'q': HANDLE_MODE (IRC_CHAN_MODE_QUIET) break;
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case 't': HANDLE_MODE (IRC_CHAN_MODE_PROTECTED_TOPIC) break;
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case 'p':
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HANDLE_MODE (IRC_CHAN_MODE_PRIVATE)
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REMOVE_MODE (IRC_CHAN_MODE_SECRET, 's')
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break;
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case 's':
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HANDLE_MODE (IRC_CHAN_MODE_SECRET)
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REMOVE_MODE (IRC_CHAN_MODE_PRIVATE, 'p')
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break;
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case 'b':
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HANDLE_LIST (&chan->ban_list,
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IRC_RPL_BANLIST, IRC_RPL_ENDOFBANLIST)
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break;
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case 'e':
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HANDLE_LIST (&chan->exception_list,
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IRC_RPL_EXCEPTLIST, IRC_RPL_ENDOFEXCEPTLIST)
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break;
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case 'I':
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HANDLE_LIST (&chan->invite_list,
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IRC_RPL_INVITELIST, IRC_RPL_ENDOFINVITELIST)
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break;
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case 'k':
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NEEDS_OPER
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if (!adding)
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{
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if (!(target = *params))
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continue;
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params++;
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if (!chan->key || irc_strcmp (target, chan->key))
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continue;
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str_append_c (&removed, mode_char);
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str_vector_add (&removed_params, chan->key);
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free (chan->key);
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chan->key = NULL;
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}
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else if (!(target = *params))
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continue;
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else
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{
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params++;
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if (chan->key)
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irc_send_reply (c, IRC_ERR_KEYSET, chan->name);
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else
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{
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chan->key = xstrdup (target);
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str_append_c (&added, mode_char);
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str_vector_add (&added_params, chan->key);
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}
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}
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break;
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case 'l':
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NEEDS_OPER
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if (!adding)
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{
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if (chan->user_limit == -1)
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continue;
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chan->user_limit = -1;
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str_append_c (&removed, mode_char);
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}
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else if (!(target = *params))
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continue;
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else
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{
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params++;
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unsigned long x;
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if (xstrtoul (&x, target, 10) && x > 0 && x <= LONG_MAX)
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{
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chan->user_limit = x;
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str_append_c (&added, mode_char);
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str_vector_add (&added_params, target);
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}
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}
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break;
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default:
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RETURN_WITH_REPLY (c, IRC_ERR_UNKNOWNMODE);
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}
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}
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#undef NEEDS_OPER
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#undef HANDLE_USER
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#undef HANDLE_LIST
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#undef HANDLE_MODE
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#undef REMOVE_MODE
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if (added.len || removed.len)
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{
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struct str message;
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str_init (&message);
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str_append_printf (&message, ":%s!%s@%s MODE %s ",
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c->nickname, c->username, c->hostname, chan->name);
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if (added.len)
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str_append_printf (&message, "+%s", added.str);
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if (removed.len)
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str_append_printf (&message, "-%s", removed.str);
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for (size_t i = 0; i < added_params.len; i++)
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str_append_printf (&message, " %s", added_params.vector[i]);
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for (size_t i = 0; i < removed_params.len; i++)
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str_append_printf (&message, " %s", removed_params.vector[i]);
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irc_channel_multicast (chan, message.str, NULL);
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str_free (&message);
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}
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str_free (&added); str_vector_free (&added_params);
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str_free (&removed); str_vector_free (&removed_params);
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}
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static void
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irc_handle_mode (const struct irc_message *msg, struct client *c)
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{
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@ -1474,13 +1718,9 @@ irc_handle_mode (const struct irc_message *msg, struct client *c)
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char *mode = channel_get_mode (chan, channel_get_user (chan, c));
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irc_send_reply (c, IRC_RPL_CHANNELMODEIS, target, mode);
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free (mode);
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return;
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}
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if (msg->params.len < 3
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&& irc_maybe_send_channel_list (c, chan, msg->params.vector[1]))
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return;
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// TODO: mode modification
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else
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irc_handle_chan_mode_change (c, chan, &msg->params.vector[1]);
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return;
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}
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