Updates after review:
Removed setting of IP-address, netmask etc. when creating the IP interface.
Split caif_if_create_remove() into , caif_if_create() and caif_if_remove().
Declared interface as array in conn_info struct, and removed memory allocation.
Removed switching of syntax runtime (from strict to permissive and back again).
Removed return statement from cgev_notify()
Remaining issues:
Use glib xml parser.
---
drivers/stemodem/gprs-context.c | 579 +++++++++++++++++++++++++++++++++++++++
1 files changed, 579 insertions(+), 0 deletions(-)
create mode 100644 drivers/stemodem/gprs-context.c
diff --git a/drivers/stemodem/gprs-context.c b/drivers/stemodem/gprs-context.c
new file mode 100644
index 0000000..b2148d8
--- /dev/null
+++ b/drivers/stemodem/gprs-context.c
@@ -0,0 +1,579 @@
+/*
+ *
+ * oFono - Open Source Telephony
+ *
+ * Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
+ * Copyright (C) 2010 ST-Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <glib.h>
+
+#include <ofono/log.h>
+#include <ofono/modem.h>
+#include <ofono/gprs-context.h>
+#include <ofono/gprs.h>
+
+#include <linux/types.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+
+#include "gatchat.h"
+#include "gatresult.h"
+#include "stemodem.h"
+
+/* Use the local CAIF header files until is included in linux kernel */
+#ifdef PF_CAIF
+#include <linux/caif/caif_socket.h>
+#include <linux/caif/if_caif.h>
+#else
+#include "gcaif/caif_socket.h"
+#include "gcaif/if_caif.h"
+#endif
+
+#define MAX_CAIF_DEVICES 7
+#define MAX_DNS 5
+#define AUTH_BUF_LENGTH (OFONO_GPRS_MAX_USERNAME_LENGTH + \
+ OFONO_GPRS_MAX_PASSWORD_LENGTH + 128)
+
+static const char *cgact_prefix[] = { "+CGACT:", NULL };
+static const char *none_prefix[] = { NULL };
+
+static GSList *g_caif_devices;
+
+struct gprs_context_data {
+ GAtChat *chat;
+ unsigned int active_context;
+ char *username;
+ char *password;
+};
+
+struct conn_info {
+ unsigned int cid;
+ unsigned int device;
+ unsigned int channel_id;
+ char interface[10];
+};
+
+static gint conn_compare_by_cid(gconstpointer a, gconstpointer b)
+{
+ const struct conn_info *conn = a;
+ unsigned int used = GPOINTER_TO_UINT(b);
+
+ if (used != conn->cid)
+ return 1;
+
+ return 0;
+}
+
+/* TODO: should parse_xml function to be moved to e.g. atutil? */
+static char *parse_xml(char *xml, char *tag)
+{
+ char *begin;
+ char *end;
+ int len;
+ char *res = NULL;
+ char *start = g_malloc(strlen(tag) + 3);
+ char *stop = g_malloc(strlen(tag) + 4);
+
+ sprintf(start, "<%s>", tag);
+ sprintf(stop, "</%s>", tag);
+
+ begin = strstr(xml, start);
+ if (begin == NULL)
+ goto error;
+
+ end = strstr(begin, stop);
+ if (end == NULL)
+ goto error;
+
+ begin += strlen(start);
+ len = end - begin;
+ res = (char *)g_malloc(len+1);
+ strncpy(res, begin, len);
+ res[len] = 0;
+
+error:
+ free(start);
+ free(stop);
+ return res;
+}
+
+static struct conn_info *conn_info_create(
+ unsigned int device,
+ unsigned int channel_id)
+{
+ struct conn_info *connection = g_try_new0(struct conn_info, 1);
+
+ if (!connection)
+ return NULL;
+
+ connection->cid = 0;
+ connection->device = device;
+ connection->channel_id = channel_id;
+
+ return connection;
+}
+
+/* Creates a new IP interface for CAIF.
+ *
+*/
+static gboolean caif_if_create(const char *interface,
+ unsigned int connid)
+{
+ int s;
+ static struct ifcaif_param param;
+ static struct ifreq ifr;
+
+ param.ipv4_connid = connid;
+ ifr.ifr_data = (void *) ¶m;
+ strcpy(ifr.ifr_name, interface);
+
+ s = socket(AF_CAIF, SOCK_SEQPACKET, CAIFPROTO_AT);
+ if (s < 0) {
+ ofono_debug("Failed to create socket for CAIF interface");
+ goto error;
+ }
+
+ if (ioctl(s, SIOCCAIFNETNEW, &ifr) < 0) {
+ ofono_debug("Failed to create IP interface for CAIF");
+ goto error;
+ }
+
+return TRUE;
+
+error:
+ return FALSE;
+}
+
+/* Removes IP interface for CAIF.
+ *
+*/
+static gboolean caif_if_remove(const char *interface,
+ unsigned int connid)
+{
+ int s;
+ static struct ifcaif_param param;
+ static struct ifreq ifr;
+
+ param.ipv4_connid = connid;
+ ifr.ifr_data = (void *) ¶m;
+ strcpy(ifr.ifr_name, interface);
+
+ s = socket(AF_CAIF, SOCK_SEQPACKET, CAIFPROTO_AT);
+ if (s < 0) {
+ ofono_debug("Failed to create socket for CAIF interface");
+ goto error;
+ }
+
+ if (ioctl(s, SIOCGIFINDEX, &ifr) == 0) {
+ if (ioctl(s, SIOCCAIFNETREMOVE, &ifr) < 0) {
+ ofono_debug("Failed to remove IP interface"
+ "for CAIF");
+ goto error;
+ }
+ } else {
+ ofono_debug("Did not find interface (%s) to remove",
+ interface);
+ goto error;
+ }
+
+ return TRUE;
+
+error:
+ return FALSE;
+}
+
+static void ste_eppsd_down_cb(gboolean ok,
+ GAtResult *result, gpointer user_data)
+{
+ struct cb_data *cbd = user_data;
+ ofono_gprs_context_cb_t cb = cbd->cb;
+ struct ofono_gprs_context *gc = cbd->user;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ struct ofono_error error;
+ struct conn_info *conn;
+ GSList *l;
+
+ dump_response("ste_eppsd_down_cb", ok, result);
+
+ if (!ok)
+ goto error;
+
+ l = g_slist_find_custom(g_caif_devices,
+ GUINT_TO_POINTER(gcd->active_context),
+ conn_compare_by_cid);
+
+ if (!l) {
+ ofono_debug("Did not find data (used caif device) for"
+ "connection with cid; %d",
+ gcd->active_context);
+ goto error;
+ }
+ conn = l->data;
+ if (!caif_if_remove(conn->interface, conn->channel_id)) {
+ ofono_debug("Failed to remove caif interface %s.",
+ conn->interface);
+ }
+ conn->cid = 0;
+
+ decode_at_error(&error, g_at_result_final_response(result));
+ cb(&error, cbd->data);
+ return;
+
+error:
+ CALLBACK_WITH_FAILURE(cb, cbd->data);
+}
+
+static void ste_eppsd_up_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ struct cb_data *cbd = user_data;
+ ofono_gprs_context_up_cb_t cb = cbd->cb;
+ struct ofono_gprs_context *gc = cbd->user;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ struct conn_info *conn = NULL;
+ GAtResultIter iter;
+ GSList *l;
+ int i;
+ int numdns = 0;
+ char *res_string;
+ const char *ip = NULL;
+ const char *netmask = NULL;
+ const char *gateway = NULL;
+ const char *mtu = NULL;
+ const char *dns[MAX_DNS + 1];
+ const char *str;
+
+ dump_response("ste_eppsd_up_cb", ok, result);
+
+ l = g_slist_find_custom(g_caif_devices,
+ GUINT_TO_POINTER(gcd->active_context),
+ conn_compare_by_cid);
+
+ if (!l) {
+ ofono_debug("Did not find data (device and channel id)"
+ "for connection with cid; %d",
+ gcd->active_context);
+ goto error;
+ }
+ conn = l->data;
+
+ if (!ok)
+ goto error;
+
+ g_at_result_iter_init(&iter, result);
+ for (i = 0; i < g_at_result_num_response_lines(result); i++) {
+ g_at_result_iter_next(&iter, NULL);
+ res_string = strdup(g_at_result_iter_raw_line(&iter));
+
+ if (strstr(res_string, "ip_address")) {
+ ip = g_strdup(parse_xml(res_string,
+ "ip_address"));
+ } else if ((strstr(res_string, "subnet_mask"))) {
+ netmask = g_strdup(parse_xml(res_string,
+ "subnet_mask"));
+ } else if ((strstr(res_string, "mtu"))) {
+ mtu = g_strdup(parse_xml(res_string,
+ "mtu"));
+ } else if ((strstr(res_string, "default_gateway"))) {
+ gateway = g_strdup(parse_xml(res_string,
+ "default_gateway"));
+ } else if ((strstr(res_string, "dns_server"))) {
+ str = g_strdup(parse_xml(res_string,
+ "dns_server"));
+
+ if (numdns < MAX_DNS)
+ dns[numdns++] = str;
+ }
+ }
+ dns[numdns] = NULL;
+
+ sprintf(conn->interface, "caif%u", conn->device);
+
+ if (!caif_if_create(conn->interface, conn->channel_id)) {
+ ofono_error("Failed to create caif interface %s.",
+ conn->interface);
+ CALLBACK_WITH_SUCCESS(cb, NULL, FALSE, ip, netmask,
+ gateway, dns, cbd->data);
+ } else {
+ CALLBACK_WITH_SUCCESS(cb, conn->interface,
+ FALSE, ip, netmask, gateway, dns, cbd->data);
+ }
+ return;
+
+error:
+ ofono_debug("ste_eppsd_up_cb error");
+
+ if (conn)
+ conn->cid = 0;
+
+ CALLBACK_WITH_FAILURE(cb, NULL, 0, NULL, NULL, NULL, NULL, cbd->data);
+}
+
+static void ste_cgdcont_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ struct cb_data *cbd = user_data;
+ ofono_gprs_context_up_cb_t cb = cbd->cb;
+ struct ofono_gprs_context *gc = cbd->user;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ struct cb_data *ncbd = NULL;
+ struct conn_info *conn;
+ char buf[AUTH_BUF_LENGTH];
+ GSList *l;
+
+ dump_response("cgdcont_cb", ok, result);
+
+ if (!ok) {
+ struct ofono_error error;
+
+ gcd->active_context = 0;
+
+ decode_at_error(&error, g_at_result_final_response(result));
+ cb(&error, NULL, 0, NULL, NULL, NULL, NULL, cbd->data);
+ return;
+ }
+
+ /* Set username and password */
+ sprintf(buf, "AT*EIAAUW=%d,1,\"%s\",\"%s\"", gcd->active_context,
+ gcd->username, gcd->password);
+
+ if (g_at_chat_send(gcd->chat, buf, none_prefix,
+ NULL, NULL, NULL) == 0)
+ goto error;
+
+ ncbd = g_memdup(cbd, sizeof(struct cb_data));
+
+ l = g_slist_find_custom(g_caif_devices, GUINT_TO_POINTER(0),
+ conn_compare_by_cid);
+
+ if (!l) {
+ ofono_debug("at_cgdcont_cb, no more available devices");
+ goto error;
+ }
+ conn = l->data;
+ conn->cid = gcd->active_context;
+ sprintf(buf, "AT*EPPSD=1,%u,%u", conn->channel_id, conn->cid);
+
+ if (g_at_chat_send(gcd->chat, buf, NULL,
+ ste_eppsd_up_cb, ncbd, g_free) > 0)
+ return;
+error:
+ if (ncbd)
+ g_free(ncbd);
+
+ gcd->active_context = 0;
+
+ CALLBACK_WITH_FAILURE(cb, NULL, 0, NULL, NULL,
+ NULL, NULL, cbd->data);
+}
+
+static void ste_gprs_activate_primary(struct ofono_gprs_context *gc,
+ const struct ofono_gprs_primary_context *ctx,
+ ofono_gprs_context_up_cb_t cb, void *data)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ struct cb_data *cbd = cb_data_new(cb, data);
+ char buf[OFONO_GPRS_MAX_APN_LENGTH + 128];
+ int len;
+
+ if (!cbd)
+ goto error;
+
+ gcd->active_context = ctx->cid;
+ gcd->username = g_strdup(ctx->username);
+ gcd->password = g_strdup(ctx->password);
+ cbd->user = gc;
+
+ len = sprintf(buf, "AT+CGDCONT=%u,\"IP\"", ctx->cid);
+
+ if (ctx->apn)
+ snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"",
+ ctx->apn);
+
+ if (g_at_chat_send(gcd->chat, buf, none_prefix,
+ ste_cgdcont_cb, cbd, g_free) > 0)
+ return;
+error:
+ if (cbd)
+ g_free(cbd);
+
+ CALLBACK_WITH_FAILURE(cb, NULL, 0, NULL, NULL, NULL, NULL, data);
+}
+
+static void ste_gprs_deactivate_primary(struct ofono_gprs_context *gc,
+ unsigned int id,
+ ofono_gprs_context_cb_t cb, void *data)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ struct cb_data *cbd = cb_data_new(cb, data);
+ struct conn_info *conn;
+ char buf[64];
+ GSList *l;
+
+ if (!cbd)
+ goto error;
+
+ gcd->active_context = id;
+ cbd->user = gc;
+
+ l = g_slist_find_custom(g_caif_devices, GUINT_TO_POINTER(id),
+ conn_compare_by_cid);
+
+ if (!l) {
+ ofono_debug("at_gprs_deactivate_primary, did not find"
+ "data (channel id) for connection with cid; %d", id);
+ goto error;
+ }
+ conn = l->data;
+
+ sprintf(buf, "AT*EPPSD=0,%u,%u", conn->channel_id, id);
+
+ if (g_at_chat_send(gcd->chat, buf, none_prefix,
+ ste_eppsd_down_cb, cbd, g_free) > 0)
+ return;
+
+error:
+ if (cbd)
+ g_free(cbd);
+
+ CALLBACK_WITH_FAILURE(cb, data);
+}
+
+static void ste_cgact_read_cb(gboolean ok, GAtResult *result,
+ gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ gint cid, state;
+ GAtResultIter iter;
+
+ dump_response("cgact_read_cb", ok, result);
+
+ if (!ok)
+ return;
+ g_at_result_iter_init(&iter, result);
+
+ while (g_at_result_iter_next(&iter, "+CGACT:")) {
+
+ if (!g_at_result_iter_next_number(&iter, &cid))
+ continue;
+
+ if ((unsigned int) cid != gcd->active_context)
+ continue;
+
+ if (!g_at_result_iter_next_number(&iter, &state))
+ continue;
+
+ if (state == 1)
+ continue;
+
+ ofono_gprs_context_deactivated(gc, gcd->active_context);
+ gcd->active_context = 0;
+
+ break;
+ }
+}
+
+static void cgev_notify(GAtResult *result, gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ GAtResultIter iter;
+ const char *event;
+
+ dump_response("cgev_notify", TRUE, result);
+
+ g_at_result_iter_init(&iter, result);
+
+ if (!g_at_result_iter_next(&iter, "+CGEV:"))
+ return;
+
+ if (!g_at_result_iter_next_unquoted_string(&iter, &event))
+ return;
+
+ if (g_str_has_prefix(event, "NW REACT ") ||
+ g_str_has_prefix(event, "NW DEACT ") ||
+ g_str_has_prefix(event, "ME DEACT ")) {
+ /* Ask what primary contexts are active now */
+
+ g_at_chat_send(gcd->chat, "AT+CGACT?", cgact_prefix,
+ ste_cgact_read_cb, gc, NULL);
+ }
+}
+
+static int ste_gprs_context_probe(struct ofono_gprs_context *gc,
+ unsigned int vendor, void *data)
+{
+ GAtChat *chat = data;
+ struct gprs_context_data *gcd;
+ struct conn_info *ci;
+ int i;
+
+ gcd = g_new0(struct gprs_context_data, 1);
+ gcd->chat = chat;
+
+ g_at_chat_register(gcd->chat, "+CGEV:", cgev_notify, FALSE, gc, NULL);
+
+ ofono_gprs_context_set_data(gc, gcd);
+
+ for (i = 0; i < MAX_CAIF_DEVICES; i++) {
+ ci = conn_info_create(i, i+1);
+ if (ci)
+ g_caif_devices = g_slist_append(g_caif_devices, ci);
+ }
+
+ return 0;
+}
+
+static void ste_gprs_context_remove(struct ofono_gprs_context *gc)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ g_slist_foreach(g_caif_devices, (GFunc) g_free, NULL);
+ g_slist_free(g_caif_devices);
+ g_caif_devices = NULL;
+
+ ofono_gprs_context_set_data(gc, NULL);
+ g_free(gcd);
+}
+
+static struct ofono_gprs_context_driver driver = {
+ .name = "stemodem",
+ .probe = ste_gprs_context_probe,
+ .remove = ste_gprs_context_remove,
+ .activate_primary = ste_gprs_activate_primary,
+ .deactivate_primary = ste_gprs_deactivate_primary,
+};
+
+void ste_gprs_context_init()
+{
+ ofono_gprs_context_driver_register(&driver);
+}
+
+void ste_gprs_context_exit()
+{
+ ofono_gprs_context_driver_unregister(&driver);
+}
--
1.6.0.4
_______________________________________________
ofono mailing list
ofono@ofono.org
http://lists.ofono.org/listinfo/ofono
