This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Daniel Willmann daniel at totalueberwachung.deIn contrast to the VTY interface the control interface is meant to be
used by programs.
This patch adds basic support, no commands are defined.
---
openbsc/configure.in | 1 +
openbsc/include/openbsc/control_cmd.h | 81 ++++++
openbsc/src/Makefile.am | 2 +-
openbsc/src/libctrl/Makefile.am | 7 +
openbsc/src/libctrl/control_cmd.c | 443 +++++++++++++++++++++++++++++++++
openbsc/src/libctrl/control_if.c | 369 +++++++++++++++++++++++++++
6 files changed, 902 insertions(+), 1 deletions(-)
create mode 100644 openbsc/include/openbsc/control_cmd.h
create mode 100644 openbsc/src/libctrl/Makefile.am
create mode 100644 openbsc/src/libctrl/control_cmd.c
create mode 100644 openbsc/src/libctrl/control_if.c
diff --git a/openbsc/configure.in b/openbsc/configure.in
index e9bc079..af49c1e 100644
--- a/openbsc/configure.in
+++ b/openbsc/configure.in
@@ -92,6 +92,7 @@ AC_OUTPUT(
src/libtrau/Makefile
src/libabis/Makefile
src/libbsc/Makefile
+ src/libctrl/Makefile
src/libmsc/Makefile
src/libmgcp/Makefile
src/libcommon/Makefile
diff --git a/openbsc/include/openbsc/control_cmd.h b/openbsc/include/openbsc/control_cmd.h
new file mode 100644
index 0000000..8d543ee
--- /dev/null
+++ b/openbsc/include/openbsc/control_cmd.h
@@ -0,0 +1,81 @@
+#ifndef _CONTROL_CMD_H
+#define _CONTROL_CMD_H
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/write_queue.h>
+
+#include <osmocom/vty/vector.h>
+
+#define CTRL_CMD_ERROR -1
+#define CTRL_CMD_HANDLED 0
+#define CTRL_CMD_REPLY 1
+
+enum ctrl_node_type {
+ CTRL_NODE_ROOT, /* Root elements */
+ CTRL_NODE_NET, /* Network specific (net.) */
+ CTRL_NODE_BTS, /* BTS specific (net.btsN.) */
+ CTRL_NODE_TRX, /* TRX specific (net.btsN.trxM.) */
+ CTRL_NODE_TS, /* TS specific (net.btsN.trxM.tsI.) */
+ _LAST_CTRL_NODE
+};
+
+enum ctrl_type {
+ CTRL_TYPE_UNKNOWN,
+ CTRL_TYPE_GET,
+ CTRL_TYPE_SET,
+ CTRL_TYPE_GET_REPLY,
+ CTRL_TYPE_SET_REPLY,
+ CTRL_TYPE_TRAP,
+ CTRL_TYPE_ERROR
+};
+
+struct ctrl_connection {
+ struct llist_head list_entry;
+
+ /* The queue for sending data back */
+ struct osmo_wqueue write_queue;
+
+ /* Callback if the connection was closed */
+ void (*closed_cb)(struct ctrl_connection *conn);
+
+ /* Pending commands for this connection */
+ struct llist_head cmds;
+};
+
+struct ctrl_cmd {
+ struct ctrl_connection *ccon;
+ enum ctrl_type type;
+ char *id;
+ void *node;
+ char *variable;
+ char *value;
+ char *reply;
+};
+
+struct ctrl_cmd_struct {
+ int nr_commands;
+ char **command;
+};
+
+struct ctrl_cmd_element {
+ const char *name;
+ const char *param;
+ struct ctrl_cmd_struct strcmd;
+ int (*set)(struct ctrl_cmd *cmd, void *data);
+ int (*get)(struct ctrl_cmd *cmd, void *data);
+ int (*verify)(struct ctrl_cmd *cmd, const char *value, void *data);
+};
+
+struct ctrl_cmd_map {
+ char *cmd;
+ enum ctrl_type type;
+};
+
+int ctrl_cmd_exec(vector vline, struct ctrl_cmd *command, vector node, void *data);
+int ctrl_cmd_install(enum ctrl_node_type node, struct ctrl_cmd_element *cmd);
+int ctrl_cmd_handle(struct ctrl_cmd *cmd, void *data);
+int ctrl_cmd_send(struct osmo_wqueue *queue, struct ctrl_cmd *cmd);
+struct ctrl_cmd *ctrl_cmd_parse(void *ctx, struct msgb *msg);
+struct msgb *ctrl_cmd_make(struct ctrl_cmd *cmd);
+
+#endif /* _CONTROL_CMD_H */
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index df7b936..c7de811 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -2,7 +2,7 @@ INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(COVERAGE_LDFLAGS)
-SUBDIRS = libcommon libabis libmgcp libbsc libmsc libtrau osmo-nitb osmo-bsc_mgcp utils ipaccess libgb gprs
+SUBDIRS = libcommon libabis libmgcp libbsc libmsc libtrau libctrl osmo-nitb osmo-bsc_mgcp utils ipaccess libgb gprs
# Conditional modules
if BUILD_NAT
diff --git a/openbsc/src/libctrl/Makefile.am b/openbsc/src/libctrl/Makefile.am
new file mode 100644
index 0000000..286929b
--- /dev/null
+++ b/openbsc/src/libctrl/Makefile.am
@@ -0,0 +1,7 @@
+INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(COVERAGE_LDFLAGS)
+
+noinst_LIBRARIES = libctrl.a
+
+libctrl_a_SOURCES = control_if.c control_cmd.c
diff --git a/openbsc/src/libctrl/control_cmd.c b/openbsc/src/libctrl/control_cmd.c
new file mode 100644
index 0000000..06af3b3
--- /dev/null
+++ b/openbsc/src/libctrl/control_cmd.c
@@ -0,0 +1,443 @@
+/* SNMP-like status interface
+ *
+ * (C) 2010-2011 by Daniel Willmann <daniel at 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 <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <openbsc/control_cmd.h>
+#include <openbsc/debug.h>
+#include <openbsc/vty.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/vty/command.h>
+#include <osmocom/vty/vector.h>
+
+extern vector ctrl_node_vec;
+
+static struct ctrl_cmd_map ccm[] = {
+ {"GET", CTRL_TYPE_GET},
+ {"SET", CTRL_TYPE_SET},
+ {"GET_REPLY", CTRL_TYPE_GET_REPLY},
+ {"SET_REPLY", CTRL_TYPE_SET_REPLY},
+ {"TRAP", CTRL_TYPE_TRAP},
+ {"ERROR", CTRL_TYPE_ERROR},
+ {NULL}
+};
+
+int ctrl_cmd_str2type(char *s)
+{
+ int i;
+ for (i=0; ccm[i].cmd != NULL; i++) {
+ if (strcasecmp(s, ccm[i].cmd) == 0)
+ return ccm[i].type;
+ }
+ return CTRL_TYPE_UNKNOWN;
+}
+
+char *ctrl_cmd_type2str(int type)
+{
+ int i;
+ for (i=0; ccm[i].cmd != NULL; i++) {
+ if (ccm[i].type == type)
+ return ccm[i].cmd;
+ }
+ return NULL;
+}
+
+/* Functions from libosmocom */
+extern vector cmd_make_descvec(const char *string, const char *descstr);
+
+/* Get the ctrl_cmd_element that matches this command */
+static struct ctrl_cmd_element *ctrl_cmd_get_element_match(vector vline, vector node)
+{
+ int index, j;
+ const char *desc;
+ struct ctrl_cmd_element *cmd_el;
+ struct ctrl_cmd_struct *cmd_desc;
+ char *str;
+
+ for (index = 0; index < vector_active(node); index++) {
+ if ((cmd_el = vector_slot(node, index))) {
+ cmd_desc = &cmd_el->strcmd;
+ if (cmd_desc->nr_commands > vector_active(vline))
+ continue;
+ for (j =0; j < vector_active(vline); j++) {
+ str = vector_slot(vline, j);
+ desc = cmd_desc->command[j];
+ if (desc[0] == '*')
+ return cmd_el; /* Partial match */
+ if (strcmp(desc, str) != 0)
+ break;
+ }
+ /* We went through all the elements and all matched */
+ if (j == cmd_desc->nr_commands)
+ return cmd_el;
+ }
+ }
+
+ return NULL;
+}
+
+int ctrl_cmd_exec(vector vline, struct ctrl_cmd *command, vector node, void *data)
+{
+ int ret = CTRL_CMD_ERROR;
+ struct ctrl_cmd_element *cmd_el;
+
+ if ((command->type != CTRL_TYPE_GET) && (command->type != CTRL_TYPE_SET)) {
+ command->reply = "Trying to execute something not GET or SET";
+ goto out;
+ }
+ if ((command->type == CTRL_TYPE_SET) && (!command->value)) {
+ command->reply = "SET without a value";
+ goto out;
+ }
+
+ if (!vline)
+ goto out;
+
+ cmd_el = ctrl_cmd_get_element_match(vline, node);
+
+ if (!cmd_el) {
+ command->reply = "Command not found";
+ goto out;
+ }
+
+ if (command->type == CTRL_TYPE_SET) {
+ if (!cmd_el->set) {
+ command->reply = "SET not implemented";
+ goto out;
+ }
+ if (cmd_el->verify) {
+ if ((ret = cmd_el->verify(command, command->value, data))) {
+ ret = CTRL_CMD_ERROR;
+ command->reply = "Value failed verification.";
+ goto out;
+ }
+ } else if (cmd_el->param) {
+ LOGP(DINP, LOGL_NOTICE, "Parameter verification unimplemented, continuing without\n");
+ }
+ ret = cmd_el->set(command, data);
+ goto out;
+ } else if (command->type == CTRL_TYPE_GET) {
+ if (!cmd_el->get) {
+ command->reply = "GET not implemented";
+ goto out;
+ }
+ ret = cmd_el->get(command, data);
+ goto out;
+ }
+out:
+ if (ret == CTRL_CMD_REPLY) {
+ if (command->type == CTRL_TYPE_SET) {
+ command->type = CTRL_TYPE_SET_REPLY;
+ } else if (command->type == CTRL_TYPE_GET) {
+ command->type = CTRL_TYPE_GET_REPLY;
+ }
+ } else if (ret == CTRL_CMD_ERROR) {
+ command->type = CTRL_TYPE_ERROR;
+ }
+ return ret;
+}
+
+static void add_word(struct ctrl_cmd_struct *cmd,
+ const char *start, const char *end)
+{
+ if (!cmd->command) {
+ cmd->command = talloc_zero_array(tall_vty_vec_ctx,
+ char*, 1);
+ cmd->nr_commands = 0;
+ } else {
+ cmd->command = talloc_realloc(tall_vty_vec_ctx,
+ cmd->command, char*,
+ cmd->nr_commands + 1);
+ }
+
+ cmd->command[cmd->nr_commands++] = talloc_strndup(cmd->command,
+ start, end - start);
+}
+
+static void create_cmd_struct(struct ctrl_cmd_struct *cmd, const char *name)
+{
+ const char *cur, *word;
+
+ for (cur = name, word = NULL; cur[0] != '\0'; ++cur) {
+ /* warn about optionals */
+ if (cur[0] == '(' || cur[0] == ')' || cur[0] == '|') {
+ LOGP(DINP, LOGL_ERROR,
+ "Optionals are not supported in '%s'\n", name);
+ goto failure;
+ }
+
+ if (isspace(cur[0])) {
+ if (word) {
+ add_word(cmd, word, cur);
+ word = NULL;
+ }
+ continue;
+ }
+
+ if (!word)
+ word = cur;
+ }
+
+ if (word)
+ add_word(cmd, word, cur);
+
+ return;
+failure:
+ cmd->nr_commands = 0;
+ talloc_free(cmd->command);
+}
+
+int ctrl_cmd_install(enum ctrl_node_type node, struct ctrl_cmd_element *cmd)
+{
+ vector cmds_vec;
+
+ cmds_vec = vector_lookup_ensure(ctrl_node_vec, node);
+
+ if (!cmds_vec) {
+ cmds_vec = vector_init(5);
+ if (!cmds_vec) {
+ LOGP(DINP, LOGL_ERROR, "vector_init failed.\n");
+ return -ENOMEM;
+ }
+ vector_set_index(ctrl_node_vec, node, cmds_vec);
+ }
+
+ vector_set(cmds_vec, cmd);
+
+ create_cmd_struct(&cmd->strcmd, cmd->name);
+ return 0;
+}
+
+struct ctrl_cmd *ctrl_cmd_parse(void *ctx, struct msgb *msg)
+{
+ char *str, *tmp, *saveptr = NULL;
+ char *var, *val;
+ struct ctrl_cmd *cmd;
+
+ cmd = talloc_zero(ctx, struct ctrl_cmd);
+ if (!cmd) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate.\n");
+ return NULL;
+ }
+
+ /* Make sure input is NULL terminated */
+ msgb_put_u8(msg, 0);
+ str = (char *) msg->l2h;
+
+ tmp = strtok_r(str, " ", &saveptr);
+ if (!tmp) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->id = "err";
+ cmd->reply = "Request malformed";
+ goto err;
+ }
+
+ cmd->type = ctrl_cmd_str2type(tmp);
+ if (cmd->type == CTRL_TYPE_UNKNOWN) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->id = "err";
+ cmd->reply = "Request type unknown";
+ goto err;
+ }
+
+ tmp = strtok_r(NULL, " ", &saveptr);
+
+ if (!tmp) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->id = "err";
+ cmd->reply = "Missing ID";
+ goto err;
+ }
+ cmd->id = talloc_strdup(cmd, tmp);
+ if (!cmd->id)
+ goto oom;
+
+ switch (cmd->type) {
+ case CTRL_TYPE_GET:
+ var = strtok_r(NULL, " ", &saveptr);
+ if (!var) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->reply = "GET incomplete";
+ LOGP(DINP, LOGL_NOTICE, "GET Command incomplete\n");
+ goto err;
+ }
+ cmd->variable = talloc_strdup(cmd, var);
+ LOGP(DINP, LOGL_DEBUG, "Command: GET %s\n", cmd->variable);
+ break;
+ case CTRL_TYPE_SET:
+ var = strtok_r(NULL, " ", &saveptr);
+ val = strtok_r(NULL, " ", &saveptr);
+ if (!var || !val) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->reply = "SET incomplete";
+ LOGP(DINP, LOGL_NOTICE, "SET Command incomplete\n");
+ goto err;
+ }
+ cmd->variable = talloc_strdup(cmd, var);
+ cmd->value = talloc_strdup(cmd, val);
+ if (!cmd->variable || !cmd->value)
+ goto oom;
+ LOGP(DINP, LOGL_DEBUG, "Command: SET %s = %s\n", cmd->variable, cmd->value);
+ break;
+ case CTRL_TYPE_GET_REPLY:
+ case CTRL_TYPE_SET_REPLY:
+ case CTRL_TYPE_TRAP:
+ var = strtok_r(NULL, " ", &saveptr);
+ val = strtok_r(NULL, " ", &saveptr);
+ if (!var || !val) {
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->reply = "Trap/Reply incomplete";
+ LOGP(DINP, LOGL_NOTICE, "Trap/Reply incomplete\n");
+ goto err;
+ }
+ cmd->variable = talloc_strdup(cmd, var);
+ cmd->reply = talloc_strdup(cmd, val);
+ if (!cmd->variable || !cmd->reply)
+ goto oom;
+ LOGP(DINP, LOGL_DEBUG, "Command: TRAP/REPLY %s: %s\n", cmd->variable, cmd->reply);
+ break;
+ case CTRL_TYPE_ERROR:
+ var = strtok_r(NULL, "\0", &saveptr);
+ if (!var) {
+ cmd->reply = "";
+ goto err;
+ }
+ cmd->reply = talloc_strdup(cmd, var);
+ if (!cmd->reply)
+ goto oom;
+ LOGP(DINP, LOGL_DEBUG, "Command: ERROR %s\n", cmd->reply);
+ break;
+ case CTRL_TYPE_UNKNOWN:
+ default:
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->reply = "Unknown type";
+ goto err;
+ }
+
+ return cmd;
+oom:
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->id = "err";
+ cmd->reply = "OOM";
+err:
+ talloc_free(cmd);
+ return NULL;
+}
+
+struct msgb *ctrl_cmd_make(struct ctrl_cmd *cmd)
+{
+ struct msgb *msg;
+ char *type, *tmp;
+
+ if (!cmd->id)
+ return NULL;
+
+ msg = msgb_alloc_headroom(4096, 128, "ctrl command make");
+ if (!msg)
+ return NULL;
+
+ type = ctrl_cmd_type2str(cmd->type);
+
+ switch (cmd->type) {
+ case CTRL_TYPE_GET:
+ if (!cmd->variable)
+ goto err;
+
+ tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id, cmd->variable);
+ if (!tmp) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate cmd.\n");
+ goto err;
+ }
+
+ msg->l2h = msgb_put(msg, strlen(tmp));
+ memcpy(msg->l2h, tmp, strlen(tmp));
+ talloc_free(tmp);
+ break;
+ case CTRL_TYPE_SET:
+ if (!cmd->variable || !cmd->value)
+ goto err;
+
+ tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable,
+ cmd->value);
+ if (!tmp) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate cmd.\n");
+ goto err;
+ }
+
+ msg->l2h = msgb_put(msg, strlen(tmp));
+ memcpy(msg->l2h, tmp, strlen(tmp));
+ talloc_free(tmp);
+ break;
+ case CTRL_TYPE_GET_REPLY:
+ case CTRL_TYPE_SET_REPLY:
+ case CTRL_TYPE_TRAP:
+ if (!cmd->variable || !cmd->reply)
+ goto err;
+
+ tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable,
+ cmd->reply);
+ if (!tmp) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate cmd.\n");
+ goto err;
+ }
+
+ msg->l2h = msgb_put(msg, strlen(tmp));
+ memcpy(msg->l2h, tmp, strlen(tmp));
+ talloc_free(tmp);
+ break;
+ case CTRL_TYPE_ERROR:
+ if (!cmd->reply)
+ goto err;
+
+ tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id,
+ cmd->reply);
+ if (!tmp) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate cmd.\n");
+ goto err;
+ }
+
+ msg->l2h = msgb_put(msg, strlen(tmp));
+ memcpy(msg->l2h, tmp, strlen(tmp));
+ talloc_free(tmp);
+ break;
+ default:
+ LOGP(DINP, LOGL_NOTICE, "Unknown command type %i\n", cmd->type);
+ goto err;
+ break;
+ }
+
+ return msg;
+
+err:
+ msgb_free(msg);
+ return NULL;
+}
diff --git a/openbsc/src/libctrl/control_if.c b/openbsc/src/libctrl/control_if.c
new file mode 100644
index 0000000..a607b10
--- /dev/null
+++ b/openbsc/src/libctrl/control_if.c
@@ -0,0 +1,369 @@
+/* SNMP-like status interface
+ *
+ * (C) 2010-2011 by Daniel Willmann <daniel at 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 <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <arpa/inet.h>
+
+#include <netinet/tcp.h>
+
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <openbsc/control_cmd.h>
+#include <openbsc/debug.h>
+#include <openbsc/e1_input.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/ipaccess.h>
+#include <openbsc/socket.h>
+#include <openbsc/subchan_demux.h>
+
+#include <openbsc/abis_rsl.h>
+#include <openbsc/abis_nm.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/gsm/tlv.h>
+
+#include <osmocom/vty/command.h>
+#include <osmocom/vty/vector.h>
+
+struct ctrl_handle {
+ struct osmo_fd listen_fd;
+ struct gsm_network *gsmnet;
+};
+
+vector ctrl_node_vec;
+
+int ctrl_cmd_send(struct osmo_wqueue *queue, struct ctrl_cmd *cmd)
+{
+ int ret;
+ struct msgb *msg;
+
+ msg = ctrl_cmd_make(cmd);
+ if (!msg) {
+ LOGP(DINP, LOGL_ERROR, "Could not generate msg\n");
+ return -1;
+ }
+
+ ipaccess_prepend_header_ext(msg, IPAC_PROTO_EXT_CTRL);
+ ipaccess_prepend_header(msg, IPAC_PROTO_OSMO);
+
+ ret = osmo_wqueue_enqueue(queue, msg);
+ if (ret != 0) {
+ LOGP(DINP, LOGL_ERROR, "Failed to enqueue the command.\n");
+ msgb_free(msg);
+ }
+ return ret;
+}
+
+int ctrl_cmd_handle(struct ctrl_cmd *cmd, void *data)
+{
+ char *token, *request;
+ int num, i, j, ret, node;
+ struct gsm_network *gsmnet = data;
+
+ struct gsm_network *net = NULL;
+ 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 = "Someone forgot to fill in the reply.";
+ cmd->node = NULL;
+ node = CTRL_NODE_ROOT;
+
+ 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)
+ 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, "net")) {
+ net = gsmnet;
+ if (!net)
+ break;
+ cmd->node = net;
+ node = CTRL_NODE_NET;
+ } else if (!strncmp(token, "bts", 3)) {
+ if (!net)
+ break;
+ num = atoi(&token[3]);
+ bts = gsm_bts_num(net, num);
+ if (!bts)
+ break;
+ cmd->node = bts;
+ node = CTRL_NODE_BTS;
+ } else if (!strncmp(token, "trx", 3)) {
+ if (!bts)
+ break;
+ num = atoi(&token[3]);
+ trx = gsm_bts_trx_num(bts, num);
+ if (!trx)
+ break;
+ cmd->node = trx;
+ node = CTRL_NODE_TRX;
+ } else if (!strncmp(token, "ts", 2)) {
+ if (!trx)
+ break;
+ num = atoi(&token[2]);
+ if ((num >= 0) && (num < TRX_NR_TS))
+ ts = &trx->ts[num];
+ if (!ts)
+ break;
+ 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;
+ }
+ }
+
+ cmd_free_strvec(vline);
+
+err:
+ if (ret == CTRL_CMD_ERROR)
+ cmd->type = CTRL_TYPE_ERROR;
+ return ret;
+}
+
+static void control_close_conn(struct ctrl_connection *ccon)
+{
+ close(ccon->write_queue.bfd.fd);
+ osmo_fd_unregister(&ccon->write_queue.bfd);
+ if (ccon->closed_cb)
+ ccon->closed_cb(ccon);
+ talloc_free(ccon);
+}
+
+static int handle_control_read(struct osmo_fd * bfd)
+{
+ int ret = -1, error;
+ struct osmo_wqueue *queue;
+ struct ctrl_connection *ccon;
+ struct ipaccess_head *iph;
+ struct ipaccess_head_ext *iph_ext;
+ struct msgb *msg;
+ struct ctrl_cmd *cmd;
+ struct ctrl_handle *ctrl = bfd->data;
+
+ queue = container_of(bfd, struct osmo_wqueue, bfd);
+ ccon = container_of(queue, struct ctrl_connection, write_queue);
+
+ msg = ipaccess_read_msg(bfd, &error);
+
+ if (!msg) {
+ if (error == 0)
+ LOGP(DINP, LOGL_INFO, "The control connection was closed\n");
+ else
+ LOGP(DINP, LOGL_ERROR, "Failed to parse ip access message: %d\n", error);
+
+ goto err;
+ }
+
+ if (msg->len < sizeof(*iph) + sizeof(*iph_ext)) {
+ LOGP(DINP, LOGL_ERROR, "The message is too short.\n");
+ goto err;
+ }
+
+ iph = (struct ipaccess_head *) msg->data;
+ if (iph->proto != IPAC_PROTO_OSMO) {
+ LOGP(DINP, LOGL_ERROR, "Protocol mismatch. We got 0x%x\n", iph->proto);
+ goto err;
+ }
+
+ iph_ext = (struct ipaccess_head_ext *) iph->data;
+ if (iph_ext->proto != IPAC_PROTO_EXT_CTRL) {
+ LOGP(DINP, LOGL_ERROR, "Extended protocol mismatch. We got 0x%x\n", iph_ext->proto);
+ goto err;
+ }
+
+ msg->l2h = iph_ext->data;
+
+ cmd = ctrl_cmd_parse(ccon, msg);
+
+ if (cmd) {
+ cmd->ccon = ccon;
+ if (ctrl_cmd_handle(cmd, ctrl->gsmnet) != CTRL_CMD_HANDLED) {
+ ctrl_cmd_send(queue, cmd);
+ talloc_free(cmd);
+ }
+ } else {
+ cmd = talloc_zero(ccon, struct ctrl_cmd);
+ if (!cmd)
+ goto err;
+ LOGP(DINP, LOGL_ERROR, "Command parser error.\n");
+ cmd->type = CTRL_TYPE_ERROR;
+ cmd->id = "err";
+ cmd->reply = "Command parser error.";
+ ctrl_cmd_send(queue, cmd);
+ talloc_free(cmd);
+ }
+
+ msgb_free(msg);
+ return 0;
+
+err:
+ control_close_conn(ccon);
+ msgb_free(msg);
+ return ret;
+}
+
+static int control_write_cb(struct osmo_fd *bfd, struct msgb *msg)
+{
+ int rc;
+
+ rc = write(bfd->fd, msg->data, msg->len);
+ if (rc != msg->len)
+ LOGP(DINP, LOGL_ERROR, "Failed to write message to the control connection.\n");
+
+ return rc;
+}
+
+static struct ctrl_connection *ctrl_connection_alloc(void *ctx)
+{
+ struct ctrl_connection *ccon = talloc_zero(ctx, struct ctrl_connection);
+ if (!ccon)
+ return NULL;
+
+ osmo_wqueue_init(&ccon->write_queue, 100);
+ /* Error handling here? */
+
+ INIT_LLIST_HEAD(&ccon->cmds);
+ return ccon;
+}
+
+static int listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what)
+{
+ int ret, fd, on;
+ struct ctrl_connection *ccon;
+ struct sockaddr_in sa;
+ socklen_t sa_len = sizeof(sa);
+
+
+ if (!(what & BSC_FD_READ))
+ return 0;
+
+ fd = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
+ if (fd < 0) {
+ perror("accept");
+ return fd;
+ }
+ LOGP(DINP, LOGL_INFO, "accept()ed new control connection from %s\n",
+ inet_ntoa(sa.sin_addr));
+
+ on = 1;
+ ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+ if (ret != 0) {
+ LOGP(DNAT, LOGL_ERROR, "Failed to set TCP_NODELAY: %s\n", strerror(errno));
+ close(fd);
+ return ret;
+ }
+ ccon = ctrl_connection_alloc(listen_bfd->data);
+ if (!ccon) {
+ LOGP(DINP, LOGL_ERROR, "Failed to allocate.\n");
+ close(fd);
+ return -1;
+ }
+
+ ccon->write_queue.bfd.data = listen_bfd->data;
+ ccon->write_queue.bfd.fd = fd;
+ ccon->write_queue.bfd.when = BSC_FD_READ;
+ ccon->write_queue.read_cb = handle_control_read;
+ ccon->write_queue.write_cb = control_write_cb;
+
+ ret = osmo_fd_register(&ccon->write_queue.bfd);
+ if (ret < 0) {
+ LOGP(DINP, LOGL_ERROR, "Could not register FD.\n");
+ close(ccon->write_queue.bfd.fd);
+ talloc_free(ccon);
+ }
+
+ return ret;
+}
+
+int controlif_setup(struct gsm_network *gsmnet, uint16_t port)
+{
+ int ret;
+ struct ctrl_handle *ctrl;
+
+ ctrl = talloc_zero(tall_bsc_ctx, struct ctrl_handle);
+ if (!ctrl)
+ return -ENOMEM;
+
+ ctrl->gsmnet = gsmnet;
+
+ ctrl_node_vec = vector_init(5);
+ if (!ctrl_node_vec)
+ return -ENOMEM;
+
+ /* Listen for control connections */
+ ret = make_sock(&ctrl->listen_fd, IPPROTO_TCP, 0, port,
+ 0, listen_fd_cb, ctrl);
+ if (ret < 0) {
+ talloc_free(ctrl);
+ return ret;
+ }
+
+ return ret;
+}
--
1.7.5.rc3