mirror of git://git.sysmocom.de/ofono
517 lines
12 KiB
C
517 lines
12 KiB
C
/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2016 EndoCode AG. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#define _GNU_SOURCE
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <errno.h>
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#include <glib.h>
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#include <ofono/log.h>
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#include <ofono/modem.h>
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#include <ofono/gprs-context.h>
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#include "gatchat.h"
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#include "gatresult.h"
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#include "ubloxmodem.h"
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static const char *none_prefix[] = { NULL };
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static const char *cgcontrdp_prefix[] = { "+CGCONTRDP:", NULL };
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static const char *uipaddr_prefix[] = { "+UIPADDR:", NULL };
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struct gprs_context_data {
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GAtChat *chat;
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unsigned int active_context;
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ofono_gprs_context_cb_t cb;
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void *cb_data;
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};
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static void uipaddr_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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GAtResultIter iter;
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const char *gw = NULL;
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const char *netmask = NULL;
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DBG("ok %d", ok);
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if (!ok) {
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CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
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return;
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}
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g_at_result_iter_init(&iter, result);
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while (g_at_result_iter_next(&iter, "+UIPADDR:")) {
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g_at_result_iter_skip_next(&iter);
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g_at_result_iter_skip_next(&iter);
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if (!g_at_result_iter_next_string(&iter, &gw))
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break;
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if (!g_at_result_iter_next_string(&iter, &netmask))
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break;
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}
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if (gw)
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ofono_gprs_context_set_ipv4_gateway(gc, gw);
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if (netmask)
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ofono_gprs_context_set_ipv4_netmask(gc, netmask);
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CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
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}
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/*
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* CGCONTRDP returns addr + netmask in the same string in the form
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* of "a.b.c.d.m.m.m.m" for IPv4. IPv6 is not supported so we ignore it.
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*/
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static int set_address_and_netmask(struct ofono_gprs_context *gc,
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const char *addrnetmask)
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{
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char *dup = strdup(addrnetmask);
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char *s = dup;
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const char *addr = s;
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const char *netmask = NULL;
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int ret = -EINVAL;
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int i;
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/* Count 7 dots for ipv4, less or more means error. */
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for (i = 0; i < 8; i++, s++) {
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s = strchr(s, '.');
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if (!s)
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break;
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if (i == 3) {
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/* set netmask ptr and break the string */
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netmask = s + 1;
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s[0] = 0;
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}
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}
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if (i == 7) {
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ofono_gprs_context_set_ipv4_address(gc, addr, 1);
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ofono_gprs_context_set_ipv4_netmask(gc, netmask);
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ret = 0;
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}
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free(dup);
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return ret;
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}
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static void set_gprs_context_interface(struct ofono_gprs_context *gc)
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{
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struct ofono_modem *modem;
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const char *interface;
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/* read interface name read at detection time */
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modem = ofono_gprs_context_get_modem(gc);
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interface = ofono_modem_get_string(modem, "NetworkInterface");
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ofono_gprs_context_set_interface(gc, interface);
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}
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static void cgcontrdp_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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GAtResultIter iter;
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const char *laddrnetmask = NULL;
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const char *gw = NULL;
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const char *dns[3] = { NULL, NULL, NULL };
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char buf[64];
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DBG("ok %d", ok);
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if (!ok) {
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struct ofono_error error;
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decode_at_error(&error, g_at_result_final_response(result));
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gcd->cb(&error, gcd->cb_data);
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return;
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}
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g_at_result_iter_init(&iter, result);
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while (g_at_result_iter_next(&iter, "+CGCONTRDP:")) {
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/* skip cid, bearer_id, apn */
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g_at_result_iter_skip_next(&iter);
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g_at_result_iter_skip_next(&iter);
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g_at_result_iter_skip_next(&iter);
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if (!g_at_result_iter_next_string(&iter, &laddrnetmask))
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break;
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if (!g_at_result_iter_next_string(&iter, &gw))
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break;
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if (!g_at_result_iter_next_string(&iter, &dns[0]))
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break;
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if (!g_at_result_iter_next_string(&iter, &dns[1]))
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break;
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}
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set_gprs_context_interface(gc);
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if (!laddrnetmask || set_address_and_netmask(gc, laddrnetmask) < 0) {
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CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
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return;
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}
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if (gw)
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ofono_gprs_context_set_ipv4_gateway(gc, gw);
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if (dns[0])
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ofono_gprs_context_set_ipv4_dns_servers(gc, dns);
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/*
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* Some older versions of Toby L2 need to issue AT+UIPADDR to get the
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* the correct gateway and netmask. The newer version will return an
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* empty ok reply.
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*/
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snprintf(buf, sizeof(buf), "AT+UIPADDR=%u", gcd->active_context);
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if (g_at_chat_send(gcd->chat, buf, uipaddr_prefix,
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uipaddr_cb, gc, NULL) > 0)
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return;
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/* Even if UIPADDR failed, we still have enough data. */
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CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
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}
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static int ublox_send_cgcontrdp(struct ofono_gprs_context *gc)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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char buf[64];
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/* read ip configuration info */
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snprintf(buf, sizeof(buf), "AT+CGCONTRDP=%u", gcd->active_context);
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return g_at_chat_send(gcd->chat, buf, cgcontrdp_prefix,
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cgcontrdp_cb, gc, NULL);
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}
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static void ublox_read_settings(struct ofono_gprs_context *gc)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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if (ublox_send_cgcontrdp(gc) < 0)
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CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
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}
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static void ublox_gprs_read_settings(struct ofono_gprs_context *gc,
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unsigned int cid,
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ofono_gprs_context_cb_t cb, void *data)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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DBG("cid %u", cid);
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gcd->active_context = cid;
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gcd->cb = cb;
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gcd->cb_data = data;
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ublox_read_settings(gc);
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}
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static void cgact_enable_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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DBG("ok %d", ok);
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if (!ok) {
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struct ofono_error error;
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gcd->active_context = 0;
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decode_at_error(&error, g_at_result_final_response(result));
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gcd->cb(&error, gcd->cb_data);
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return;
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}
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ublox_read_settings(gc);
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}
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static void cgdcont_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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char buf[64];
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DBG("ok %d", ok);
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if (!ok) {
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struct ofono_error error;
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gcd->active_context = 0;
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decode_at_error(&error, g_at_result_final_response(result));
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gcd->cb(&error, gcd->cb_data);
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return;
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}
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snprintf(buf, sizeof(buf), "AT+CGACT=1,%u", gcd->active_context);
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if (g_at_chat_send(gcd->chat, buf, none_prefix,
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cgact_enable_cb, gc, NULL))
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return;
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CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
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}
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#define UBLOX_MAX_USER_LEN 50
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#define UBLOX_MAX_PASS_LEN 50
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static void ublox_send_uauthreq(struct ofono_gprs_context *gc,
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const char *username, const char *password,
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enum ofono_gprs_auth_method auth_method)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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char buf[UBLOX_MAX_USER_LEN + UBLOX_MAX_PASS_LEN + 32];
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unsigned auth;
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switch (auth_method) {
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case OFONO_GPRS_AUTH_METHOD_PAP:
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auth = 1;
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break;
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case OFONO_GPRS_AUTH_METHOD_CHAP:
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auth = 2;
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break;
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default:
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ofono_error("Unsupported auth type %u", auth_method);
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return;
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}
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snprintf(buf, sizeof(buf), "AT+UAUTHREQ=%u,%u,\"%s\",\"%s\"",
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gcd->active_context, auth, username, password);
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/* If this failed, we will see it during context activation. */
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g_at_chat_send(gcd->chat, buf, none_prefix, NULL, NULL, NULL);
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}
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static void ublox_send_cgdcont(struct ofono_gprs_context *gc, const char *apn,
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const char *username, const char *password,
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enum ofono_gprs_auth_method auth_method)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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char buf[OFONO_GPRS_MAX_APN_LENGTH + 128];
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size_t u_len, p_len;
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int len;
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len = snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\"",
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gcd->active_context);
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if (apn)
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snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"", apn);
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if (g_at_chat_send(gcd->chat, buf, none_prefix,
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cgdcont_cb, gc, NULL) == 0)
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goto error;
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u_len = strlen(username);
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p_len = strlen(password);
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if (u_len && p_len) {
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if (u_len >= UBLOX_MAX_USER_LEN ||
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p_len >= UBLOX_MAX_PASS_LEN) {
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ofono_error("Toby L2: user or password length too big");
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goto error;
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}
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ublox_send_uauthreq(gc, username, password, auth_method);
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}
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return;
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error:
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CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
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}
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static void ublox_gprs_activate_primary(struct ofono_gprs_context *gc,
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const struct ofono_gprs_primary_context *ctx,
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ofono_gprs_context_cb_t cb, void *data)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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/* IPv6 support not implemented */
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if (ctx->proto != OFONO_GPRS_PROTO_IP) {
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CALLBACK_WITH_FAILURE(cb, data);
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return;
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}
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DBG("cid %u", ctx->cid);
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gcd->active_context = ctx->cid;
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if (!gcd->active_context) {
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ofono_error("can't activate more contexts");
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CALLBACK_WITH_FAILURE(cb, data);
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return;
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}
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gcd->cb = cb;
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gcd->cb_data = data;
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ublox_send_cgdcont(gc, ctx->apn, ctx->username, ctx->password,
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ctx->auth_method);
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}
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static void cgact_disable_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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DBG("ok %d", ok);
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if (!ok) {
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CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
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return;
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}
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gcd->active_context = 0;
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CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
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}
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static void ublox_gprs_deactivate_primary(struct ofono_gprs_context *gc,
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unsigned int cid,
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ofono_gprs_context_cb_t cb, void *data)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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char buf[64];
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DBG("cid %u", cid);
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gcd->cb = cb;
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gcd->cb_data = data;
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snprintf(buf, sizeof(buf), "AT+CGACT=0,%u", gcd->active_context);
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g_at_chat_send(gcd->chat, buf, none_prefix,
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cgact_disable_cb, gc, NULL);
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}
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static void cgev_notify(GAtResult *result, gpointer user_data)
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{
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struct ofono_gprs_context *gc = user_data;
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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GAtResultIter iter;
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const char *event;
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gint cid;
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g_at_result_iter_init(&iter, result);
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if (!g_at_result_iter_next(&iter, "+CGEV:"))
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return;
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if (!g_at_result_iter_next_unquoted_string(&iter, &event))
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return;
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if (g_str_has_prefix(event, "NW PDN DEACT"))
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sscanf(event, "%*s %*s %*s %u", &cid);
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else if (g_str_has_prefix(event, "NW DEACT"))
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sscanf(event, "%*s %*s %u", &cid);
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else
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return;
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DBG("cid %d", cid);
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if ((unsigned int) cid != gcd->active_context)
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return;
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ofono_gprs_context_deactivated(gc, gcd->active_context);
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gcd->active_context = 0;
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}
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static int ublox_gprs_context_probe(struct ofono_gprs_context *gc,
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unsigned int vendor, void *data)
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{
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GAtChat *chat = data;
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struct gprs_context_data *gcd;
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DBG("");
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gcd = g_try_new0(struct gprs_context_data, 1);
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if (gcd == NULL)
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return -ENOMEM;
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gcd->chat = g_at_chat_clone(chat);
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ofono_gprs_context_set_data(gc, gcd);
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g_at_chat_register(chat, "+CGEV:", cgev_notify, FALSE, gc, NULL);
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return 0;
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}
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static void ublox_gprs_context_remove(struct ofono_gprs_context *gc)
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{
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struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
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DBG("");
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ofono_gprs_context_set_data(gc, NULL);
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g_at_chat_unref(gcd->chat);
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memset(gcd, 0, sizeof(*gcd));
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g_free(gcd);
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}
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static struct ofono_gprs_context_driver driver = {
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.name = "ubloxmodem",
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.probe = ublox_gprs_context_probe,
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.remove = ublox_gprs_context_remove,
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.activate_primary = ublox_gprs_activate_primary,
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.deactivate_primary = ublox_gprs_deactivate_primary,
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.read_settings = ublox_gprs_read_settings,
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};
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void ublox_gprs_context_init(void)
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{
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ofono_gprs_context_driver_register(&driver);
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}
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void ublox_gprs_context_exit(void)
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{
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ofono_gprs_context_driver_unregister(&driver);
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}
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