mirror of git://git.sysmocom.de/ofono
682 lines
15 KiB
C
682 lines
15 KiB
C
/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
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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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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/uio.h>
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#include <search.h>
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#include <arpa/inet.h>
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#include <net/if.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 <gisi/client.h>
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#include <gisi/iter.h>
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#include <gisi/pep.h>
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#include <gisi/pipe.h>
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#include "isimodem.h"
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#include "isiutil.h"
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#include "gpds.h"
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#include "debug.h"
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#define STATIC_IP_NETMASK "255.255.255.255"
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#define INVALID_ID (0xff)
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# if (INVALID_ID < GPDS_MAX_CONTEXT_COUNT)
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# error Uho! This should not happen!
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#endif
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struct context_data {
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GIsiClient *client;
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GIsiModem *idx;
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uint16_t gpds; /* GPDS object handle */
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unsigned cid; /* oFono core context ID */
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struct ofono_gprs_context *context;
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ofono_gprs_context_cb_t cb;
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void *data;
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GIsiPEP *pep;
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GIsiPipe *pipe;
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guint reset;
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char apn[GPDS_MAX_APN_STRING_LENGTH + 1];
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char username[GPDS_MAX_USERNAME_LENGTH + 1];
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char password[GPDS_MAX_PASSWORD_LENGTH + 1];
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uint8_t handle; /* GPDS context ID */
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uint8_t type;
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};
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static gboolean client_reset(gpointer data)
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{
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struct context_data *cd = data;
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g_isi_client_reset(cd->client);
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cd->reset = 0;
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return FALSE;
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}
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static void reset_context(struct context_data *cd)
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{
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if (cd == NULL)
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return;
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if (cd->pipe)
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g_isi_pipe_destroy(cd->pipe);
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if (cd->pep)
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g_isi_pep_destroy(cd->pep);
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cd->pep = NULL;
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cd->pipe = NULL;
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cd->handle = INVALID_ID;
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cd->reset = g_idle_add(client_reset, cd);
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}
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typedef void (*ContextFailFunc)(struct context_data *cd);
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static void gprs_up_fail(struct context_data *cd)
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{
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reset_context(cd);
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CALLBACK_WITH_FAILURE(cd->cb, cd->data);
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}
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static void gprs_down_fail(struct context_data *cd)
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{
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reset_context(cd);
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CALLBACK_WITH_FAILURE(cd->cb, cd->data);
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}
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static gboolean check_resp(const GIsiMessage *msg, uint8_t id, size_t minlen,
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struct context_data *cd,
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ContextFailFunc fail_cb)
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{
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const uint8_t *data = g_isi_msg_data(msg);
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if (g_isi_msg_error(msg) < 0) {
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DBG("ISI message error: %d", g_isi_msg_error(msg));
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goto error;
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}
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if (g_isi_msg_id(msg) != id)
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return FALSE;
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if (g_isi_msg_data_len(msg) < minlen) {
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DBG("truncated message");
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goto error;
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}
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if (cd->handle != INVALID_ID && data[0] != cd->handle)
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return FALSE;
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if (data[1] != GPDS_OK) {
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DBG("context error: %s (0x%02"PRIx8")",
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gpds_status_name(data[1]), data[1]);
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if (minlen > 2)
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DBG(" fail cause: %s (0x%02"PRIx8")",
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gpds_isi_cause_name(data[2]), data[2]);
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goto error;
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}
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return TRUE;
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error:
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if (fail_cb)
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fail_cb(cd);
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return FALSE;
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}
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static gboolean check_ind(const GIsiMessage *msg, size_t minlen,
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struct context_data *cd)
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{
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const uint8_t *data = g_isi_msg_data(msg);
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if (g_isi_msg_error(msg) < 0) {
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DBG("ISI message error: %d", g_isi_msg_error(msg));
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return FALSE;
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}
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if (g_isi_msg_data_len(msg) < minlen) {
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DBG("truncated message");
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return FALSE;
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}
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if (cd->handle != INVALID_ID && data[0] != cd->handle)
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return FALSE;
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return TRUE;
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}
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static void deactivate_ind_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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const uint8_t *data = g_isi_msg_data(msg);
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if (!check_ind(msg, 2, cd))
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return;
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DBG("context deactivated: %s (0x%02"PRIx8")",
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gpds_isi_cause_name(data[2]), data[2]);
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ofono_gprs_context_deactivated(cd->context, cd->cid);
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reset_context(cd);
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}
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static void activate_ind_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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GIsiSubBlockIter iter;
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const char *dns[5];
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int dns_count = 0;
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char ifname[IF_NAMESIZE];
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char *ip_addr = NULL;
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char *ipv6_addr = NULL;
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if (!check_ind(msg, 2, cd))
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return;
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for (g_isi_sb_iter_init(&iter, msg, 2);
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g_isi_sb_iter_is_valid(&iter);
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g_isi_sb_iter_next(&iter)) {
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uint8_t *addr_value = NULL;
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uint8_t addr_len = 0;
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switch (g_isi_sb_iter_get_id(&iter)) {
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case GPDS_PDP_ADDRESS_INFO:
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if (!g_isi_sb_iter_get_byte(&iter, &addr_len, 3))
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goto error;
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if (!g_isi_sb_iter_get_data(&iter, (void *)&addr_value,
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4))
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goto error;
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if (addr_len == 4) {
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ip_addr = alloca(INET_ADDRSTRLEN);
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inet_ntop(AF_INET, (const void *)addr_value,
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ip_addr, INET_ADDRSTRLEN);
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} else if (addr_len == 16) {
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ipv6_addr = alloca(INET6_ADDRSTRLEN);
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inet_ntop(AF_INET6, (const void *)addr_value,
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ipv6_addr, INET6_ADDRSTRLEN);
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}
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break;
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case GPDS_PDNS_ADDRESS_INFO:
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if (!g_isi_sb_iter_get_byte(&iter, &addr_len, 3))
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break;
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if (!g_isi_sb_iter_get_data(&iter, (void *)&addr_value,
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4))
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break;
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if (addr_len == 4) {
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char *addr = alloca(INET_ADDRSTRLEN);
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inet_ntop(AF_INET, (const void *)addr_value,
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addr, INET_ADDRSTRLEN);
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dns[dns_count++] = addr;
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} else if (addr_len == 16) {
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char *addr = alloca(INET6_ADDRSTRLEN);
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inet_ntop(AF_INET6, (const void *)addr_value,
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addr, INET6_ADDRSTRLEN);
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dns[dns_count++] = addr;
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}
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break;
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case GPDS_SDNS_ADDRESS_INFO:
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if (!g_isi_sb_iter_get_byte(&iter, &addr_len, 3))
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break;
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if (!g_isi_sb_iter_get_data(&iter, (void *)&addr_value,
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4))
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break;
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if (addr_len == 4) {
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char *addr = alloca(INET_ADDRSTRLEN);
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inet_ntop(AF_INET, (const void *)addr_value,
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addr, INET_ADDRSTRLEN);
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dns[dns_count++] = addr;
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} else if (addr_len == 16) {
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char *addr = alloca(INET6_ADDRSTRLEN);
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inet_ntop(AF_INET6, (const void *)addr_value,
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addr, INET6_ADDRSTRLEN);
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dns[dns_count++] = addr;
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}
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break;
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default:
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DBG("skipped sub-block: %s (%zu bytes)",
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gpds_subblock_name(g_isi_sb_iter_get_id(&iter)),
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g_isi_sb_iter_get_len(&iter));
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}
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}
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if (!g_isi_pep_get_ifname(cd->pep, ifname))
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goto error;
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dns[dns_count] = 0;
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ofono_gprs_context_set_interface(cd->context, ifname);
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if (ip_addr != NULL) {
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ofono_gprs_context_set_ipv4_address(cd->context, ip_addr, TRUE);
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ofono_gprs_context_set_ipv4_netmask(cd->context,
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STATIC_IP_NETMASK);
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ofono_gprs_context_set_ipv4_dns_servers(cd->context, dns);
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} else if (ipv6_addr != NULL) {
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ofono_gprs_context_set_ipv6_address(cd->context, ipv6_addr);
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ofono_gprs_context_set_ipv6_dns_servers(cd->context, dns);
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}
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CALLBACK_WITH_SUCCESS(cd->cb, cd->data);
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return;
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error:
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gprs_up_fail(cd);
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}
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static void context_activate_cb(const GIsiMessage *msg, void *cd)
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{
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check_resp(msg, GPDS_CONTEXT_ACTIVATE_RESP, 6, cd, gprs_up_fail);
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}
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static void send_context_activate(GIsiClient *client, void *opaque)
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{
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struct context_data *cd = opaque;
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const unsigned char msg[] = {
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GPDS_CONTEXT_ACTIVATE_REQ,
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cd->handle, /* context ID */
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0, /* sub blocks */
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};
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g_isi_client_ind_subscribe(client, GPDS_CONTEXT_ACTIVATE_IND,
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activate_ind_cb, cd);
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g_isi_client_ind_subscribe(client, GPDS_CONTEXT_DEACTIVATE_IND,
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deactivate_ind_cb, cd);
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if (g_isi_client_send_with_timeout(client, msg, sizeof(msg),
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GPDS_CTX_ACTIVATE_TIMEOUT,
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context_activate_cb, cd, NULL))
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g_isi_pipe_start(cd->pipe);
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else
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gprs_up_fail(cd);
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}
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static void context_auth_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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if (!check_resp(msg, GPDS_CONTEXT_AUTH_RESP, 2, cd, gprs_up_fail))
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return;
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send_context_activate(cd->client, cd);
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}
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static void send_context_authenticate(GIsiClient *client, void *opaque)
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{
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struct context_data *cd = opaque;
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size_t username_len = strlen(cd->username);
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size_t password_len = strlen(cd->password);
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/* Pad the fields to the next 32bit boundary */
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size_t sb_userinfo_len = ALIGN4(3 + username_len);
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size_t userinfo_pad_len = sb_userinfo_len - (3 + username_len);
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size_t sb_password_info_len = ALIGN4(3 + password_len);
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size_t password_pad_len = sb_password_info_len - (3 + password_len);
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const uint8_t padding[4] = { 0 };
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const uint8_t top[] = {
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GPDS_CONTEXT_AUTH_REQ,
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cd->handle,
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2, /* sub blocks */
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GPDS_USER_NAME_INFO,
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sb_userinfo_len,
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username_len,
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/* Username goes here */
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/* Possible padding goes here */
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};
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const uint8_t bottom[] = {
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GPDS_PASSWORD_INFO,
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sb_password_info_len,
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password_len,
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/* Password goes here */
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/* Possible padding goes here */
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};
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const struct iovec iov[6] = {
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{ (uint8_t *) top, sizeof(top) },
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{ cd->username, username_len },
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{ (uint8_t *) padding, userinfo_pad_len },
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{ (uint8_t *) bottom, sizeof(bottom) },
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{ cd->password, password_len },
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{ (uint8_t *) padding, password_pad_len },
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};
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if (!g_isi_client_vsend(client, iov, 6, context_auth_cb, cd, NULL))
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gprs_up_fail(cd);
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}
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static void context_conf_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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if (!check_resp(msg, GPDS_CONTEXT_CONFIGURE_RESP, 2, cd, gprs_up_fail))
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return;
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if (cd->username[0] != '\0')
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send_context_authenticate(cd->client, cd);
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else
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send_context_activate(cd->client, cd);
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}
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static void link_conf_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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size_t apn_len = strlen(cd->apn);
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size_t sb_apn_info_len = ALIGN4(3 + apn_len);
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size_t apn_pad_len = sb_apn_info_len - (3 + apn_len);
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const uint8_t padding[4] = { 0 };
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const uint8_t req[] = {
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GPDS_CONTEXT_CONFIGURE_REQ,
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cd->handle, /* context ID */
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cd->type, /* PDP type */
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GPDS_CONT_TYPE_NORMAL,
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cd->handle, /* primary context ID */
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0x00, /* filler */
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2, /* sub blocks */
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GPDS_DNS_ADDRESS_REQ_INFO,
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4, /* subblock length */
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0, 0, /* padding */
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GPDS_APN_INFO,
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sb_apn_info_len,
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apn_len,
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/* Possible padding goes here */
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};
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const struct iovec iov[3] = {
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{ (uint8_t *) req, sizeof(req) },
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{ cd->apn, apn_len },
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{ (uint8_t *) padding, apn_pad_len },
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};
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if (!check_resp(msg, GPDS_LL_CONFIGURE_RESP, 2, cd, gprs_up_fail))
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return;
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if (!g_isi_client_vsend(cd->client, iov, 3, context_conf_cb, cd, NULL))
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gprs_up_fail(cd);
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}
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static void create_context_cb(const GIsiMessage *msg, void *opaque)
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{
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struct context_data *cd = opaque;
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const uint8_t *data = g_isi_msg_data(msg);
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uint8_t req[] = {
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GPDS_LL_CONFIGURE_REQ,
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0x00, /* GPDS context ID, added later */
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g_isi_pipe_get_handle(cd->pipe),
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GPDS_LL_PLAIN, /* link type */
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};
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if (!check_resp(msg, GPDS_CONTEXT_ID_CREATE_RESP, 2, cd, gprs_up_fail))
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return;
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cd->handle = req[1] = data[0];
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if (!g_isi_client_send(cd->client, req, sizeof(req), link_conf_cb,
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cd, NULL))
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gprs_up_fail(cd);
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}
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static void create_pipe_cb(GIsiPipe *pipe)
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{
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struct context_data *cd = g_isi_pipe_get_userdata(pipe);
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const uint8_t msg[] = {
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GPDS_CONTEXT_ID_CREATE_REQ,
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};
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if (!g_isi_client_send(cd->client, msg, sizeof(msg), create_context_cb,
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cd, NULL))
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gprs_up_fail(cd);
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}
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static void isi_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 context_data *cd = ofono_gprs_context_get_data(gc);
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DBG("activate: gpds = 0x%04x", cd->gpds);
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if (cd == NULL || !cd->gpds) {
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/* GPDS is not reachable */
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CALLBACK_WITH_FAILURE(cb, data);
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return;
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}
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if (cd->reset) {
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g_isi_client_reset(cd->client);
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g_source_remove(cd->reset);
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cd->reset = 0;
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}
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cd->cid = ctx->cid;
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cd->cb = cb;
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cd->data = data;
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cd->pep = NULL;
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cd->pipe = NULL;
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cd->handle = INVALID_ID;
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switch (ctx->proto) {
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case OFONO_GPRS_PROTO_IP:
|
|
cd->type = GPDS_PDP_TYPE_IPV4;
|
|
break;
|
|
|
|
case OFONO_GPRS_PROTO_IPV6:
|
|
cd->type = GPDS_PDP_TYPE_IPV6;
|
|
break;
|
|
|
|
case OFONO_GPRS_PROTO_IPV4V6:
|
|
/* Not supported by modem */
|
|
CALLBACK_WITH_FAILURE(cb, data);
|
|
return;
|
|
}
|
|
|
|
if (strlen(ctx->apn) >= GPDS_MAX_APN_STRING_LENGTH
|
|
|| strlen(ctx->username) >= GPDS_MAX_USERNAME_LENGTH
|
|
|| strlen(ctx->password) >= GPDS_MAX_PASSWORD_LENGTH)
|
|
goto error;
|
|
|
|
strncpy(cd->apn, ctx->apn, GPDS_MAX_APN_STRING_LENGTH);
|
|
cd->apn[GPDS_MAX_APN_STRING_LENGTH] = '\0';
|
|
|
|
if (ctx->auth_method == OFONO_GPRS_AUTH_METHOD_NONE) {
|
|
memset(cd->username, 0, sizeof(cd->username));
|
|
memset(cd->password, 0, sizeof(cd->password));
|
|
} else {
|
|
strncpy(cd->username, ctx->username, GPDS_MAX_USERNAME_LENGTH);
|
|
cd->username[GPDS_MAX_USERNAME_LENGTH] = '\0';
|
|
strncpy(cd->password, ctx->password, GPDS_MAX_PASSWORD_LENGTH);
|
|
cd->username[GPDS_MAX_PASSWORD_LENGTH] = '\0';
|
|
}
|
|
|
|
cd->pep = g_isi_pep_create(cd->idx, NULL, NULL);
|
|
if (cd->pep == NULL)
|
|
goto error;
|
|
|
|
cd->pipe = g_isi_pipe_create(cd->idx, create_pipe_cb,
|
|
g_isi_pep_get_object(cd->pep),
|
|
cd->gpds, PN_PEP_TYPE_GPRS,
|
|
PN_PEP_TYPE_GPRS);
|
|
if (cd->pipe == NULL)
|
|
goto error;
|
|
|
|
g_isi_pipe_set_userdata(cd->pipe, cd);
|
|
return;
|
|
|
|
error:
|
|
gprs_up_fail(cd);
|
|
}
|
|
|
|
static void context_deactivate_cb(const GIsiMessage *msg, void *opaque)
|
|
{
|
|
struct context_data *cd = opaque;
|
|
|
|
if (!check_resp(msg, GPDS_CONTEXT_DEACTIVATE_RESP, 2, cd,
|
|
gprs_down_fail))
|
|
return;
|
|
|
|
CALLBACK_WITH_SUCCESS(cd->cb, cd->data);
|
|
reset_context(cd);
|
|
}
|
|
|
|
static void isi_gprs_deactivate_primary(struct ofono_gprs_context *gc,
|
|
unsigned int cid,
|
|
ofono_gprs_context_cb_t cb, void *data)
|
|
{
|
|
struct context_data *cd = ofono_gprs_context_get_data(gc);
|
|
|
|
unsigned char msg[] = {
|
|
GPDS_CONTEXT_DEACTIVATE_REQ,
|
|
0x00, /* GPDS context ID, added later */
|
|
};
|
|
|
|
if (cd == NULL)
|
|
return;
|
|
|
|
cd->cb = cb;
|
|
cd->data = data;
|
|
|
|
msg[1] = cd->handle;
|
|
|
|
if (!g_isi_client_send_with_timeout(cd->client, msg, sizeof(msg),
|
|
GPDS_CTX_DEACTIVATE_TIMEOUT,
|
|
context_deactivate_cb, cd, NULL))
|
|
gprs_down_fail(cd);
|
|
}
|
|
|
|
static void gpds_ctx_reachable_cb(const GIsiMessage *msg, void *opaque)
|
|
{
|
|
struct ofono_gprs_context *gc = opaque;
|
|
struct context_data *cd = ofono_gprs_context_get_data(gc);
|
|
|
|
if (g_isi_msg_error(msg) < 0) {
|
|
DBG("unable to bootstrap gprs context driver");
|
|
ofono_gprs_context_remove(gc);
|
|
return;
|
|
}
|
|
|
|
cd->gpds = g_isi_msg_object(msg);
|
|
}
|
|
|
|
static int isi_gprs_context_probe(struct ofono_gprs_context *gc,
|
|
unsigned int vendor, void *user)
|
|
{
|
|
GIsiModem *idx = user;
|
|
struct context_data *cd = g_try_new0(struct context_data, 1);
|
|
|
|
if (cd == NULL)
|
|
return -ENOMEM;
|
|
|
|
cd->client = g_isi_client_create(idx, PN_GPDS);
|
|
if (cd->client == NULL) {
|
|
g_free(cd);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cd->idx = idx;
|
|
cd->context = gc;
|
|
ofono_gprs_context_set_data(gc, cd);
|
|
|
|
g_isi_client_verify(cd->client, gpds_ctx_reachable_cb, gc, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void isi_gprs_context_remove(struct ofono_gprs_context *gc)
|
|
{
|
|
struct context_data *cd = ofono_gprs_context_get_data(gc);
|
|
|
|
ofono_gprs_context_set_data(gc, NULL);
|
|
|
|
if (cd == NULL)
|
|
return;
|
|
|
|
if (cd->reset)
|
|
g_source_remove(cd->reset);
|
|
|
|
if (cd->pipe != NULL)
|
|
g_isi_pipe_destroy(cd->pipe);
|
|
|
|
if (cd->pep != NULL)
|
|
g_isi_pep_destroy(cd->pep);
|
|
|
|
g_isi_client_destroy(cd->client);
|
|
g_free(cd);
|
|
}
|
|
|
|
static const struct ofono_gprs_context_driver driver = {
|
|
.name = "isimodem",
|
|
.probe = isi_gprs_context_probe,
|
|
.remove = isi_gprs_context_remove,
|
|
.activate_primary = isi_gprs_activate_primary,
|
|
.deactivate_primary = isi_gprs_deactivate_primary,
|
|
};
|
|
|
|
void isi_gprs_context_init(void)
|
|
{
|
|
ofono_gprs_context_driver_register(&driver);
|
|
}
|
|
|
|
void isi_gprs_context_exit(void)
|
|
{
|
|
ofono_gprs_context_driver_unregister(&driver);
|
|
}
|