From 49f9e5b6b42cae9f6083e5c69c70af0b29b15b23 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Date: Sun, 23 Mar 2014 16:25:16 +0100
Subject: ctrl: Move the lookup into a separate file in preparation for GPRS

For GPRS the look-up via bts/trx does not make any sense and would
introduce bad depdencies for the SGSN. Move the look-up code to a
new file and introduce new setup methods.
---
 openbsc/src/libbsc/bsc_ctrl_lookup.c | 179 +++++++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 openbsc/src/libbsc/bsc_ctrl_lookup.c

(limited to 'openbsc/src/libbsc/bsc_ctrl_lookup.c')

diff --git a/openbsc/src/libbsc/bsc_ctrl_lookup.c b/openbsc/src/libbsc/bsc_ctrl_lookup.c
new file mode 100644
index 000000000..338fb1154
--- /dev/null
+++ b/openbsc/src/libbsc/bsc_ctrl_lookup.c
@@ -0,0 +1,179 @@
+/* SNMP-like status interface. Look-up of BTS/TRX
+ *
+ * (C) 2010-2011 by Daniel Willmann <daniel@totalueberwachung.de>
+ * (C) 2010-2011 by On-Waves
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <openbsc/control_if.h>
+#include <openbsc/debug.h>
+
+extern vector ctrl_node_vec;
+
+static int get_num(vector vline, int i, long *num)
+{
+	char *token, *tmp;
+
+	if (i >= vector_active(vline))
+		return 0;
+	token = vector_slot(vline, i);
+
+	errno = 0;
+	if (token[0] == '\0')
+		return 0;
+
+	*num = strtol(token, &tmp, 10);
+	if (tmp[0] != '\0' || errno != 0)
+		return 0;
+
+	return 1;
+}
+
+int bsc_ctrl_cmd_handle(struct ctrl_cmd *cmd, void *data)
+{
+	char *token, *request;
+	long num;
+	int i, j, ret, node;
+
+	struct gsm_network *net = data;
+	struct gsm_bts *bts = NULL;
+	struct gsm_bts_trx *trx = NULL;
+	struct gsm_bts_trx_ts *ts = NULL;
+	vector vline, cmdvec, cmds_vec;
+
+	ret = CTRL_CMD_ERROR;
+	cmd->reply = NULL;
+	node = CTRL_NODE_ROOT;
+	cmd->node = net;
+
+	request = talloc_strdup(tall_bsc_ctx, cmd->variable);
+	if (!request)
+		goto err;
+
+	for (i=0;i<strlen(request);i++) {
+		if (request[i] == '.')
+			request[i] = ' ';
+	}
+
+	vline = cmd_make_strvec(request);
+	talloc_free(request);
+	if (!vline) {
+		cmd->reply = "cmd_make_strvec failed.";
+		goto err;
+	}
+
+	for (i=0;i<vector_active(vline);i++) {
+		token = vector_slot(vline, i);
+		/* TODO: We need to make sure that the following chars are digits
+		 * and/or use strtol to check if number conversion was successful
+		 * Right now something like net.bts_stats will not work */
+		if (!strcmp(token, "bts")) {
+			if (!net)
+				goto err_missing;
+			i++;
+			if (!get_num(vline, i, &num))
+				goto err_index;
+
+			bts = gsm_bts_num(net, num);
+			if (!bts)
+				goto err_missing;
+			cmd->node = bts;
+			node = CTRL_NODE_BTS;
+		} else if (!strcmp(token, "trx")) {
+			if (!bts)
+				goto err_missing;
+			i++;
+			if (!get_num(vline, i, &num))
+				goto err_index;
+
+			trx = gsm_bts_trx_num(bts, num);
+			if (!trx)
+				goto err_missing;
+			cmd->node = trx;
+			node = CTRL_NODE_TRX;
+		} else if (!strcmp(token, "ts")) {
+			if (!trx)
+				goto err_missing;
+			i++;
+			if (!get_num(vline, i, &num))
+				goto err_index;
+
+			if ((num >= 0) && (num < TRX_NR_TS))
+				ts = &trx->ts[num];
+			if (!ts)
+				goto err_missing;
+			cmd->node = ts;
+			node = CTRL_NODE_TS;
+		} else {
+			/* If we're here the rest must be the command */
+			cmdvec = vector_init(vector_active(vline)-i);
+			for (j=i; j<vector_active(vline); j++) {
+				vector_set(cmdvec, vector_slot(vline, j));
+			}
+
+			/* Get the command vector of the right node */
+			cmds_vec = vector_lookup(ctrl_node_vec, node);
+
+			if (!cmds_vec) {
+				cmd->reply = "Command not found.";
+				vector_free(cmdvec);
+				break;
+			}
+
+			ret = ctrl_cmd_exec(cmdvec, cmd, cmds_vec, data);
+
+			vector_free(cmdvec);
+			break;
+		}
+
+		if (i+1 == vector_active(vline))
+			cmd->reply = "Command not present.";
+	}
+
+	cmd_free_strvec(vline);
+
+err:
+	if (!cmd->reply) {
+		LOGP(DCTRL, LOGL_ERROR, "cmd->reply has not been set.\n");
+		if (ret == CTRL_CMD_ERROR)
+			cmd->reply = "An error has occured.";
+		else
+			cmd->reply = "Command has been handled.";
+	}
+
+	if (ret == CTRL_CMD_ERROR)
+		cmd->type = CTRL_TYPE_ERROR;
+	return ret;
+
+err_missing:
+	cmd_free_strvec(vline);
+	cmd->type = CTRL_TYPE_ERROR;
+	cmd->reply = "Error while resolving object";
+	return ret;
+err_index:
+	cmd_free_strvec(vline);
+	cmd->type = CTRL_TYPE_ERROR;
+	cmd->reply = "Error while parsing the index.";
+	return ret;
+}
+
+struct ctrl_handle *bsc_controlif_setup(struct gsm_network *net, uint16_t port)
+{
+	return controlif_setup(net, port, bsc_ctrl_cmd_handle);
+}
-- 
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