+ SilcClientCommandContext cmd = (SilcClientCommandContext)context;
+ SilcClientConnection conn = cmd->conn;
+ SilcChannelEntry channel;
+ SilcBuffer buffer, chidp, auth = NULL;
+ unsigned char *name, *cp, modebuf[4], tmp[4], *arg = NULL;
+ uint32 mode, add, type, len, arg_len = 0;
+ int i;
+
+ if (!cmd->conn) {
+ SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+ COMMAND_ERROR;
+ goto out;
+ }
+
+ if (cmd->argc < 3) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+
+ if (cmd->argv[1][0] == '*') {
+ if (!conn->current_channel) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "You are not on any channel");
+ COMMAND_ERROR;
+ goto out;
+ }
+
+ channel = conn->current_channel;
+ } else {
+ name = cmd->argv[1];
+
+ channel = silc_client_get_channel(cmd->client, conn, name);
+ if (!channel) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "You are on that channel");
+ COMMAND_ERROR;
+ goto out;
+ }
+ }
+
+ mode = channel->mode;
+
+ /* Are we adding or removing mode */
+ if (cmd->argv[2][0] == '-')
+ add = FALSE;
+ else
+ add = TRUE;
+
+ /* Argument type to be sent to server */
+ type = 0;
+
+ /* Parse mode */
+ cp = cmd->argv[2] + 1;
+ len = strlen(cp);
+ for (i = 0; i < len; i++) {
+ switch(cp[i]) {
+ case 'p':
+ if (add)
+ mode |= SILC_CHANNEL_MODE_PRIVATE;
+ else
+ mode &= ~SILC_CHANNEL_MODE_PRIVATE;
+ break;
+ case 's':
+ if (add)
+ mode |= SILC_CHANNEL_MODE_SECRET;
+ else
+ mode &= ~SILC_CHANNEL_MODE_SECRET;
+ break;
+ case 'k':
+ if (add)
+ mode |= SILC_CHANNEL_MODE_PRIVKEY;
+ else
+ mode &= ~SILC_CHANNEL_MODE_PRIVKEY;
+ break;
+ case 'i':
+ if (add)
+ mode |= SILC_CHANNEL_MODE_INVITE;
+ else
+ mode &= ~SILC_CHANNEL_MODE_INVITE;
+ break;
+ case 't':
+ if (add)
+ mode |= SILC_CHANNEL_MODE_TOPIC;
+ else
+ mode &= ~SILC_CHANNEL_MODE_TOPIC;
+ break;
+ case 'l':
+ if (add) {
+ int ll;
+ mode |= SILC_CHANNEL_MODE_ULIMIT;
+ type = 3;
+ if (cmd->argc < 4) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+ ll = atoi(cmd->argv[3]);
+ SILC_PUT32_MSB(ll, tmp);
+ arg = tmp;
+ arg_len = 4;
+ } else {
+ mode &= ~SILC_CHANNEL_MODE_ULIMIT;
+ }
+ break;
+ case 'a':
+ if (add) {
+ mode |= SILC_CHANNEL_MODE_PASSPHRASE;
+ type = 4;
+ if (cmd->argc < 4) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+ arg = cmd->argv[3];
+ arg_len = cmd->argv_lens[3];
+ } else {
+ mode &= ~SILC_CHANNEL_MODE_PASSPHRASE;
+ }
+ break;
+ case 'c':
+ if (add) {
+ mode |= SILC_CHANNEL_MODE_CIPHER;
+ type = 5;
+ if (cmd->argc < 4) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+ arg = cmd->argv[3];
+ arg_len = cmd->argv_lens[3];
+ } else {
+ mode &= ~SILC_CHANNEL_MODE_CIPHER;
+ }
+ break;
+ case 'h':
+ if (add) {
+ mode |= SILC_CHANNEL_MODE_HMAC;
+ type = 6;
+ if (cmd->argc < 4) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+ arg = cmd->argv[3];
+ arg_len = cmd->argv_lens[3];
+ } else {
+ mode &= ~SILC_CHANNEL_MODE_HMAC;
+ }
+ break;
+ case 'f':
+ if (add) {
+ mode |= SILC_CHANNEL_MODE_FOUNDER_AUTH;
+ type = 7;
+
+ if (cmd->argc < 4) {
+ cmd->client->ops->say(cmd->client, conn, SILC_CLIENT_MESSAGE_INFO,
+ "Usage: /CMODE <channel> +|-<modes> [{ <arguments>}]");
+ COMMAND_ERROR;
+ goto out;
+ }
+
+ if (!strcasecmp(cmd->argv[3], "-pubkey")) {
+ auth = silc_auth_public_key_auth_generate(cmd->client->public_key,
+ cmd->client->private_key,
+ conn->hash,
+ conn->local_id,
+ SILC_ID_CLIENT);
+ } else {
+ auth = silc_auth_payload_encode(SILC_AUTH_PASSWORD, NULL, 0,
+ cmd->argv[3], cmd->argv_lens[3]);
+ }
+
+ arg = auth->data;
+ arg_len = auth->len;
+ } else {
+ mode &= ~SILC_CHANNEL_MODE_FOUNDER_AUTH;
+ }
+ break;
+ default:
+ COMMAND_ERROR;
+ goto out;
+ break;
+ }
+ }
+
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ SILC_PUT32_MSB(mode, modebuf);
+
+ /* Send the command packet. We support sending only one mode at once
+ that requires an argument. */
+ if (type && arg) {
+ buffer =
+ silc_command_payload_encode_va(SILC_COMMAND_CMODE, 0, 3,
+ 1, chidp->data, chidp->len,
+ 2, modebuf, sizeof(modebuf),
+ type, arg, arg_len);
+ } else {
+ buffer =
+ silc_command_payload_encode_va(SILC_COMMAND_CMODE, 0, 2,
+ 1, chidp->data, chidp->len,
+ 2, modebuf, sizeof(modebuf));
+ }
+
+ silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, NULL,
+ 0, NULL, NULL, buffer->data, buffer->len, TRUE);
+ silc_buffer_free(buffer);
+ silc_buffer_free(chidp);
+ if (auth)
+ silc_buffer_free(auth);
+
+ /* Notify application */
+ COMMAND;
+
+ out:
+ silc_client_command_free(cmd);