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gatttool.c
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gatttool.c
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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2010 Nokia Corporation
* Copyright (C) 2010 Marcel Holtmann <[email protected]>
*
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <glib.h>
#include "lib/bluetooth.h"
#include "lib/hci.h"
#include "lib/hci_lib.h"
#include "lib/sdp.h"
#include "lib/uuid.h"
#include "src/shared/util.h"
#include "att.h"
#include "btio/btio.h"
#include "gattrib.h"
#include "gatt.h"
#include "gatttool.h"
static char *opt_src = NULL;
static char *opt_dst = NULL;
static char *opt_dst_type = NULL;
static char *opt_value = NULL;
static char *opt_sec_level = NULL;
static bt_uuid_t *opt_uuid = NULL;
static int opt_start = 0x0001;
static int opt_end = 0xffff;
static int opt_handle = -1;
static int opt_mtu = 0;
static int opt_psm = 0;
static gboolean opt_primary = FALSE;
static gboolean opt_characteristics = FALSE;
static gboolean opt_char_read = FALSE;
static gboolean opt_listen = FALSE;
static gboolean opt_char_desc = FALSE;
static gboolean opt_char_write = FALSE;
static gboolean opt_char_write_req = FALSE;
static gboolean opt_interactive = FALSE;
static GMainLoop *event_loop;
static gboolean got_error = FALSE;
static GSourceFunc operation;
struct characteristic_data {
GAttrib *attrib;
uint16_t start;
uint16_t end;
};
static void events_handler(const uint8_t *pdu, uint16_t len, gpointer user_data)
{
GAttrib *attrib = user_data;
uint8_t *opdu;
uint16_t handle, i, olen = 0;
size_t plen;
handle = get_le16(&pdu[1]);
switch (pdu[0]) {
case ATT_OP_HANDLE_NOTIFY:
g_print("Notification handle = 0x%04x value: ", handle);
break;
case ATT_OP_HANDLE_IND:
g_print("Indication handle = 0x%04x value: ", handle);
break;
default:
g_print("Invalid opcode\n");
return;
}
for (i = 3; i < len; i++)
g_print("%02x ", pdu[i]);
g_print("\n");
if (pdu[0] == ATT_OP_HANDLE_NOTIFY)
return;
opdu = g_attrib_get_buffer(attrib, &plen);
olen = enc_confirmation(opdu, plen);
if (olen > 0)
g_attrib_send(attrib, 0, opdu, olen, NULL, NULL, NULL);
}
static gboolean listen_start(gpointer user_data)
{
GAttrib *attrib = user_data;
g_attrib_register(attrib, ATT_OP_HANDLE_NOTIFY, GATTRIB_ALL_HANDLES,
events_handler, attrib, NULL);
g_attrib_register(attrib, ATT_OP_HANDLE_IND, GATTRIB_ALL_HANDLES,
events_handler, attrib, NULL);
return FALSE;
}
static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
{
GAttrib *attrib;
uint16_t mtu;
uint16_t cid;
GError *gerr = NULL;
if (err) {
g_printerr("%s\n", err->message);
got_error = TRUE;
g_main_loop_quit(event_loop);
}
bt_io_get(io, &gerr, BT_IO_OPT_IMTU, &mtu,
BT_IO_OPT_CID, &cid, BT_IO_OPT_INVALID);
if (gerr) {
g_printerr("Can't detect MTU, using default: %s",
gerr->message);
g_error_free(gerr);
mtu = ATT_DEFAULT_LE_MTU;
}
if (cid == ATT_CID)
mtu = ATT_DEFAULT_LE_MTU;
attrib = g_attrib_new(io, mtu, false);
if (opt_listen)
g_idle_add(listen_start, attrib);
operation(attrib);
}
static void primary_all_cb(uint8_t status, GSList *services, void *user_data)
{
GSList *l;
if (status) {
g_printerr("Discover all primary services failed: %s\n",
att_ecode2str(status));
goto done;
}
for (l = services; l; l = l->next) {
struct gatt_primary *prim = l->data;
g_print("attr handle = 0x%04x, end grp handle = 0x%04x "
"uuid: %s\n", prim->range.start, prim->range.end, prim->uuid);
}
done:
g_main_loop_quit(event_loop);
}
static void primary_by_uuid_cb(uint8_t status, GSList *ranges, void *user_data)
{
GSList *l;
if (status != 0) {
g_printerr("Discover primary services by UUID failed: %s\n",
att_ecode2str(status));
goto done;
}
for (l = ranges; l; l = l->next) {
struct att_range *range = l->data;
g_print("Starting handle: %04x Ending handle: %04x\n",
range->start, range->end);
}
done:
g_main_loop_quit(event_loop);
}
static gboolean primary(gpointer user_data)
{
GAttrib *attrib = user_data;
if (opt_uuid)
gatt_discover_primary(attrib, opt_uuid, primary_by_uuid_cb,
NULL);
else
gatt_discover_primary(attrib, NULL, primary_all_cb, NULL);
return FALSE;
}
static void char_discovered_cb(uint8_t status, GSList *characteristics,
void *user_data)
{
GSList *l;
if (status) {
g_printerr("Discover all characteristics failed: %s\n",
att_ecode2str(status));
goto done;
}
for (l = characteristics; l; l = l->next) {
struct gatt_char *chars = l->data;
g_print("handle = 0x%04x, char properties = 0x%02x, char value "
"handle = 0x%04x, uuid = %s\n", chars->handle,
chars->properties, chars->value_handle, chars->uuid);
}
done:
g_main_loop_quit(event_loop);
}
static gboolean characteristics(gpointer user_data)
{
GAttrib *attrib = user_data;
gatt_discover_char(attrib, opt_start, opt_end, opt_uuid,
char_discovered_cb, NULL);
return FALSE;
}
static void char_read_cb(guint8 status, const guint8 *pdu, guint16 plen,
gpointer user_data)
{
uint8_t value[plen];
ssize_t vlen;
int i;
if (status != 0) {
g_printerr("Characteristic value/descriptor read failed: %s\n",
att_ecode2str(status));
goto done;
}
vlen = dec_read_resp(pdu, plen, value, sizeof(value));
if (vlen < 0) {
g_printerr("Protocol error\n");
goto done;
}
g_print("Characteristic value/descriptor: ");
for (i = 0; i < vlen; i++)
g_print("%02x ", value[i]);
g_print("\n");
done:
if (!opt_listen)
g_main_loop_quit(event_loop);
}
static void char_read_by_uuid_cb(guint8 status, const guint8 *pdu,
guint16 plen, gpointer user_data)
{
struct att_data_list *list;
int i;
if (status != 0) {
g_printerr("Read characteristics by UUID failed: %s\n",
att_ecode2str(status));
goto done;
}
list = dec_read_by_type_resp(pdu, plen);
if (list == NULL)
goto done;
for (i = 0; i < list->num; i++) {
uint8_t *value = list->data[i];
int j;
g_print("handle: 0x%04x \t value: ", get_le16(value));
value += 2;
for (j = 0; j < list->len - 2; j++, value++)
g_print("%02x ", *value);
g_print("\n");
}
att_data_list_free(list);
done:
g_main_loop_quit(event_loop);
}
static gboolean characteristics_read(gpointer user_data)
{
GAttrib *attrib = user_data;
if (opt_uuid != NULL) {
gatt_read_char_by_uuid(attrib, opt_start, opt_end, opt_uuid,
char_read_by_uuid_cb, NULL);
return FALSE;
}
if (opt_handle <= 0) {
g_printerr("A valid handle is required\n");
g_main_loop_quit(event_loop);
return FALSE;
}
gatt_read_char(attrib, opt_handle, char_read_cb, attrib);
return FALSE;
}
static void mainloop_quit(gpointer user_data)
{
uint8_t *value = user_data;
g_free(value);
g_main_loop_quit(event_loop);
}
static gboolean characteristics_write(gpointer user_data)
{
GAttrib *attrib = user_data;
uint8_t *value;
size_t len;
if (opt_handle <= 0) {
g_printerr("A valid handle is required\n");
goto error;
}
if (opt_value == NULL || opt_value[0] == '\0') {
g_printerr("A value is required\n");
goto error;
}
len = gatt_attr_data_from_string(opt_value, &value);
if (len == 0) {
g_printerr("Invalid value\n");
goto error;
}
gatt_write_cmd(attrib, opt_handle, value, len, mainloop_quit, value);
g_free(value);
return FALSE;
error:
g_main_loop_quit(event_loop);
return FALSE;
}
static void char_write_req_cb(guint8 status, const guint8 *pdu, guint16 plen,
gpointer user_data)
{
if (status != 0) {
g_printerr("Characteristic Write Request failed: "
"%s\n", att_ecode2str(status));
goto done;
}
if (!dec_write_resp(pdu, plen) && !dec_exec_write_resp(pdu, plen)) {
g_printerr("Protocol error\n");
goto done;
}
g_print("Characteristic value was written successfully\n");
done:
if (!opt_listen)
g_main_loop_quit(event_loop);
}
static gboolean characteristics_write_req(gpointer user_data)
{
GAttrib *attrib = user_data;
uint8_t *value;
size_t len;
if (opt_handle <= 0) {
g_printerr("A valid handle is required\n");
goto error;
}
if (opt_value == NULL || opt_value[0] == '\0') {
g_printerr("A value is required\n");
goto error;
}
len = gatt_attr_data_from_string(opt_value, &value);
if (len == 0) {
g_printerr("Invalid value\n");
goto error;
}
gatt_write_char(attrib, opt_handle, value, len, char_write_req_cb,
NULL);
g_free(value);
return FALSE;
error:
g_main_loop_quit(event_loop);
return FALSE;
}
static void char_desc_cb(uint8_t status, GSList *descriptors, void *user_data)
{
GSList *l;
if (status) {
g_printerr("Discover descriptors failed: %s\n",
att_ecode2str(status));
return;
}
for (l = descriptors; l; l = l->next) {
struct gatt_desc *desc = l->data;
g_print("handle = 0x%04x, uuid = %s\n", desc->handle,
desc->uuid);
}
if (!opt_listen)
g_main_loop_quit(event_loop);
}
static gboolean characteristics_desc(gpointer user_data)
{
GAttrib *attrib = user_data;
gatt_discover_desc(attrib, opt_start, opt_end, NULL, char_desc_cb,
NULL);
return FALSE;
}
static gboolean parse_uuid(const char *key, const char *value,
gpointer user_data, GError **error)
{
if (!value)
return FALSE;
opt_uuid = g_try_malloc(sizeof(bt_uuid_t));
if (opt_uuid == NULL)
return FALSE;
if (bt_string_to_uuid(opt_uuid, value) < 0)
return FALSE;
return TRUE;
}
static GOptionEntry primary_char_options[] = {
{ "start", 's' , 0, G_OPTION_ARG_INT, &opt_start,
"Starting handle(optional)", "0x0001" },
{ "end", 'e' , 0, G_OPTION_ARG_INT, &opt_end,
"Ending handle(optional)", "0xffff" },
{ "uuid", 'u', G_OPTION_FLAG_OPTIONAL_ARG, G_OPTION_ARG_CALLBACK,
parse_uuid, "UUID16 or UUID128(optional)", "0x1801"},
{ NULL },
};
static GOptionEntry char_rw_options[] = {
{ "handle", 'a' , 0, G_OPTION_ARG_INT, &opt_handle,
"Read/Write characteristic by handle(required)", "0x0001" },
{ "value", 'n' , 0, G_OPTION_ARG_STRING, &opt_value,
"Write characteristic value (required for write operation)",
"0x0001" },
{NULL},
};
static GOptionEntry gatt_options[] = {
{ "primary", 0, 0, G_OPTION_ARG_NONE, &opt_primary,
"Primary Service Discovery", NULL },
{ "characteristics", 0, 0, G_OPTION_ARG_NONE, &opt_characteristics,
"Characteristics Discovery", NULL },
{ "char-read", 0, 0, G_OPTION_ARG_NONE, &opt_char_read,
"Characteristics Value/Descriptor Read", NULL },
{ "char-write", 0, 0, G_OPTION_ARG_NONE, &opt_char_write,
"Characteristics Value Write Without Response (Write Command)",
NULL },
{ "char-write-req", 0, 0, G_OPTION_ARG_NONE, &opt_char_write_req,
"Characteristics Value Write (Write Request)", NULL },
{ "char-desc", 0, 0, G_OPTION_ARG_NONE, &opt_char_desc,
"Characteristics Descriptor Discovery", NULL },
{ "listen", 0, 0, G_OPTION_ARG_NONE, &opt_listen,
"Listen for notifications and indications", NULL },
{ "interactive", 'I', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
&opt_interactive, "Use interactive mode", NULL },
{ NULL },
};
static GOptionEntry options[] = {
{ "adapter", 'i', 0, G_OPTION_ARG_STRING, &opt_src,
"Specify local adapter interface", "hciX" },
{ "device", 'b', 0, G_OPTION_ARG_STRING, &opt_dst,
"Specify remote Bluetooth address", "MAC" },
{ "addr-type", 't', 0, G_OPTION_ARG_STRING, &opt_dst_type,
"Set LE address type. Default: public", "[public | random]"},
{ "mtu", 'm', 0, G_OPTION_ARG_INT, &opt_mtu,
"Specify the MTU size", "MTU" },
{ "psm", 'p', 0, G_OPTION_ARG_INT, &opt_psm,
"Specify the PSM for GATT/ATT over BR/EDR", "PSM" },
{ "sec-level", 'l', 0, G_OPTION_ARG_STRING, &opt_sec_level,
"Set security level. Default: low", "[low | medium | high]"},
{ NULL },
};
int main(int argc, char *argv[])
{
GOptionContext *context;
GOptionGroup *gatt_group, *params_group, *char_rw_group;
GError *gerr = NULL;
GIOChannel *chan;
opt_dst_type = g_strdup("public");
opt_sec_level = g_strdup("low");
context = g_option_context_new(NULL);
g_option_context_add_main_entries(context, options, NULL);
/* GATT commands */
gatt_group = g_option_group_new("gatt", "GATT commands",
"Show all GATT commands", NULL, NULL);
g_option_context_add_group(context, gatt_group);
g_option_group_add_entries(gatt_group, gatt_options);
/* Primary Services and Characteristics arguments */
params_group = g_option_group_new("params",
"Primary Services/Characteristics arguments",
"Show all Primary Services/Characteristics arguments",
NULL, NULL);
g_option_context_add_group(context, params_group);
g_option_group_add_entries(params_group, primary_char_options);
/* Characteristics value/descriptor read/write arguments */
char_rw_group = g_option_group_new("char-read-write",
"Characteristics Value/Descriptor Read/Write arguments",
"Show all Characteristics Value/Descriptor Read/Write "
"arguments",
NULL, NULL);
g_option_context_add_group(context, char_rw_group);
g_option_group_add_entries(char_rw_group, char_rw_options);
if (!g_option_context_parse(context, &argc, &argv, &gerr)) {
g_printerr("%s\n", gerr->message);
g_clear_error(&gerr);
}
if (opt_interactive) {
interactive(opt_src, opt_dst, opt_dst_type, opt_psm);
goto done;
}
if (opt_primary)
operation = primary;
else if (opt_characteristics)
operation = characteristics;
else if (opt_char_read)
operation = characteristics_read;
else if (opt_char_write)
operation = characteristics_write;
else if (opt_char_write_req)
operation = characteristics_write_req;
else if (opt_char_desc)
operation = characteristics_desc;
else {
char *help = g_option_context_get_help(context, TRUE, NULL);
g_print("%s\n", help);
g_free(help);
got_error = TRUE;
goto done;
}
if (opt_dst == NULL) {
g_print("Remote Bluetooth address required\n");
got_error = TRUE;
goto done;
}
chan = gatt_connect(opt_src, opt_dst, opt_dst_type, opt_sec_level,
opt_psm, opt_mtu, connect_cb, &gerr);
if (chan == NULL) {
g_printerr("%s\n", gerr->message);
g_clear_error(&gerr);
got_error = TRUE;
goto done;
}
event_loop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(event_loop);
g_main_loop_unref(event_loop);
done:
g_option_context_free(context);
g_free(opt_src);
g_free(opt_dst);
g_free(opt_uuid);
g_free(opt_sec_level);
if (got_error)
exit(EXIT_FAILURE);
else
exit(EXIT_SUCCESS);
}