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miracast.c
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miracast.c
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/*
* Sigma Control API DUT - Miracast interface
* Copyright (c) 2017, Qualcomm Atheros, Inc.
* Copyright (c) 2018-2021, The Linux Foundation
* All Rights Reserved.
* Licensed under the Clear BSD license. See README for more details.
*
* Implementation of MIRACAST specific functionality.
* For example, starting wfd session.
*/
#include "sigma_dut.h"
#include <dlfcn.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include "wpa_ctrl.h"
#include "wpa_helpers.h"
#include "miracast.h"
#ifdef ANDROID
#include "properties.h"
#include <netutils/ifc.h>
#endif /* ANDROID */
#define HUNDRED_SECOND_TIMEOUT 100 /* 100 seconds */
#define DHCP_LEASE_FILE_PATH "/data/misc/dhcp/dnsmasq.leases"
#define MIRACAST_CMD_LEN 512
static int session_management_control_port = 7236;
/* Followingng stores p2p interface name after P2P group formation */
static char wfd_ifname[32];
extern void get_dhcp_info(uint32_t *ipaddr, uint32_t *gateway,
uint32_t *prefixLength, uint32_t *dns1,
uint32_t *dns2, uint32_t *server,
uint32_t *lease);
extern int do_dhcp(char *);
const char *ipaddr (in_addr_t addr)
{
struct in_addr in_addr;
in_addr.s_addr = addr;
return inet_ntoa(in_addr);
}
static int miracast_load(struct sigma_dut *dut)
{
static int once = 1;
if (!once)
return 0;
once = 0;
dlerror();
dut->miracast_lib = dlopen(dut->miracast_lib_path ?
dut->miracast_lib_path : "libmiracast.so",
RTLD_LAZY);
if (!dut->miracast_lib) {
sigma_dut_print(dut, DUT_MSG_INFO,
"Fail to load Miracast library %s",
dlerror());
return -1;
}
sigma_dut_print(dut, DUT_MSG_INFO,
"Miracast Wi-Fi Display library found - starting service");
return 0;
}
static int miracast_unload(struct sigma_dut *dut)
{
int err;
if (!dut->miracast_lib)
return -1;
dlerror();
sigma_dut_print(dut, DUT_MSG_INFO, "Unloading Miracast library");
err = dlclose(dut->miracast_lib);
dut->miracast_lib = NULL;
if (err == 0) {
sigma_dut_print(dut, DUT_MSG_INFO,
"Miracast library successfully unloaded");
} else {
sigma_dut_print(dut, DUT_MSG_INFO,
"Failed to unload Miracast library");
}
return err;
}
static void get_modified_peer_mac_address(struct sigma_dut *dut)
{
struct wpa_ctrl *ctrl;
char event_buf[64];
char *peer;
int res;
dut->modified_peer_mac_address[0] = '\0';
ctrl = open_wpa_mon(wfd_ifname); /* Refer to wfd_ifname */
if (!ctrl) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Failed to open wpa_supplicant monitor connection");
return;
}
res = get_wpa_cli_event(dut, ctrl, "AP-STA-CONNECTED",
event_buf, sizeof(event_buf));
wpa_ctrl_detach(ctrl);
wpa_ctrl_close(ctrl);
if (res < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not get event before timeout");
return;
}
sigma_dut_print(dut, DUT_MSG_DEBUG, "STA connected event: '%s'",
event_buf);
peer = strchr(event_buf, ' ');
if (!peer) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not find STA MAC address");
return;
}
peer++;
strlcpy(dut->modified_peer_mac_address, peer,
sizeof(dut->modified_peer_mac_address));
}
static int get_peer_ip_p2p_go(struct sigma_dut *dut, char *ipaddr,
unsigned int wait_limit)
{
FILE *fp;
char *macaddr;
if (dut->modified_peer_mac_address[0])
macaddr = dut->modified_peer_mac_address;
else
macaddr = dut->peer_mac_address;
fp = fopen(DHCP_LEASE_FILE_PATH, "r");
if (!fp) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not open DHCP lease file");
return -1;
}
sigma_dut_print(dut, DUT_MSG_INFO, "macaddress %s", macaddr);
while (wait_limit > 0) {
char line[100] = { 0 };
char *str1 = NULL;
char *dummy_str = NULL;
char dummy_macaddress[32];
int ip_found = 0;
int len;
fseek(fp, 0, SEEK_SET);
while (fgets(line, sizeof(line), fp) != NULL) {
len = strlen(line);
if (len == 0)
continue;
str1 = strtok_r(line, " ", &dummy_str);
if (str1 == NULL)
break;
/* Look for mac address */
str1 = strtok_r(NULL, " ", &dummy_str);
if (str1 == NULL)
break;
strlcpy(dummy_macaddress, str1,
sizeof(dummy_macaddress));
/* Look for ip address */
str1 = strtok_r(NULL, " ", &dummy_str);
if (str1 == NULL)
break;
strlcpy(ipaddr,str1,32);
sigma_dut_print(dut, DUT_MSG_INFO,
"Peer IP Address obtained and mac %s %s",
ipaddr, dummy_macaddress);
/* Match all the octets of MAC address */
if (strncasecmp(macaddr, dummy_macaddress, 17) == 0) {
ip_found = 1;
sigma_dut_print(dut, DUT_MSG_INFO,
"Obtained the IP address %s",
ipaddr);
break;
}
}
if (ip_found)
break;
sigma_dut_print(dut, DUT_MSG_INFO,
"Failed to find IP from DHCP lease file");
sleep(1);
wait_limit--;
}
fclose(fp);
return 0;
}
static int miracast_start_dhcp_client(struct sigma_dut *dut, const char *ifname)
{
int ret = ifc_init();
sigma_dut_print(dut, DUT_MSG_DEBUG, "ifc init returned %d", ret);
ret = do_dhcp((char *) ifname);
sigma_dut_print(dut, DUT_MSG_DEBUG, "do dhcp returned %d", ret);
return 0;
}
static void miracast_stop_dhcp_client(struct sigma_dut *dut, const char *ifname)
{
ifc_close();
}
static int get_peer_ip_p2p_client(struct sigma_dut *dut, char *ipAddr,
const char *intf, unsigned int wait_limit)
{
uint32_t ipaddress, gateway, prefixLength,
dns1, dns2, serveraddr, lease;
get_dhcp_info(&ipaddress, &gateway, &prefixLength, &dns1, &dns2,
&serveraddr, &lease);
while (wait_limit > 0) {
sigma_dut_print(dut, DUT_MSG_INFO, "Peer IP: %u", ipaddress);
if (strlen(ipaddr(serveraddr)) > 8) {
/* connected */
strlcpy(ipAddr, ipaddr(serveraddr), 16);
break;
}
sleep(1);
wait_limit--;
}
return wait_limit == 0 ? -1 : 0;
}
static int get_p2p_connection_event(struct sigma_dut *dut,
const char *input_intf,
char *output_intf,
int size_output_intf,
int *is_group_owner)
{
/*
* Poll for the P2P Connection
* Then poll for IP
* Then poll for WFD session ID and exit
* P2P connection done
* Loop till connection is ready
*/
struct wpa_ctrl *ctrl;
char *mode_string;
char event_buf[256];
char *ifname;
char *pos;
int res = 0;
const char *events[] = {
"P2P-GROUP-STARTED",
"P2P-GO-NEG-FAILURE",
"P2P-GROUP-FORMATION-FAILURE",
NULL
};
/* Wait for WPA CLI EVENTS */
/* Default timeout is 120s */
ctrl = open_wpa_mon(input_intf);
if (!ctrl) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Failed to open wpa_supplicant monitor connection");
return -1;
}
res = get_wpa_cli_events(dut, ctrl, events, event_buf,
sizeof(event_buf));
wpa_ctrl_detach(ctrl);
wpa_ctrl_close(ctrl);
if (res < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Group formation did not complete");
return -1;
}
sigma_dut_print(dut, DUT_MSG_DEBUG, "Received event %s", event_buf);
if (strstr(event_buf, "P2P-GROUP-FORMATION-FAILURE") ||
strstr(event_buf, "P2P-GO-NEG-FAILURE"))
return -1;
sigma_dut_print(dut, DUT_MSG_INFO, "P2P connection done");
ifname = strchr(event_buf, ' ');
if (!ifname) {
sigma_dut_print(dut, DUT_MSG_INFO, "No P2P interface found");
return -1;
}
ifname++;
pos = strchr(ifname, ' ');
if (!pos) {
sigma_dut_print(dut, DUT_MSG_ERROR, "No P2P interface found");
return -1;
}
*pos++ = '\0';
sigma_dut_print(dut, DUT_MSG_DEBUG, "Group interface %s", ifname);
strlcpy(output_intf, ifname, size_output_intf);
mode_string = pos;
pos = strchr(mode_string, ' ');
if (!pos) {
sigma_dut_print(dut, DUT_MSG_ERROR, "No group role found");
return -1;
}
*pos++ = '\0';
sigma_dut_print(dut, DUT_MSG_DEBUG, "Group Role %s", mode_string);
if (strcmp(mode_string, "GO") == 0) {
*is_group_owner = 1;
get_modified_peer_mac_address(dut);
}
sigma_dut_print(dut, DUT_MSG_DEBUG, "Value of is_group_owner %d",
*is_group_owner);
return 0;
}
/* Following serves as an entry point function to perform rtsp tasks */
static void * miracast_rtsp_thread_entry(void *ptr)
{
struct sigma_dut *dut = ptr;
char output_ifname[16];
int is_group_owner = 0;
const char *intf = dut->station_ifname;
unsigned int wait_limit;
char peer_ip_address[32];
int rtsp_session_id = -1;
int (*extn_start_wfd_connection)(const char *,
const char *, /* Peer IP */
int, /* RTSP port number */
int, /* WFD Device Type; 0-Source,
1-P-Sink, 2-Secondary Sink */
int *); /* for returning session ID */
miracast_load(dut);
if (dut->main_ifname) {
intf = get_main_ifname(dut);
sigma_dut_print(dut, DUT_MSG_DEBUG,
"miracast_rtsp_thread_entry: sigma_main_ifname = [%s]",
intf);
} else {
sigma_dut_print(dut, DUT_MSG_DEBUG,
"miracast_rtsp_thread_entry: sigma_main_ifname is NULL");
}
if (get_p2p_connection_event(dut, intf, output_ifname,
sizeof(output_ifname),
&is_group_owner) < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR, "P2P connection failure");
goto EXIT;
}
sigma_dut_print(dut, DUT_MSG_DEBUG, "Waiting to start dhcp");
/* Calling WFD APIs now */
/* If you are a source, go ahead and start the RTSP server */
if (dut->wfd_device_type != 0)
wait_limit = HUNDRED_SECOND_TIMEOUT;
else
wait_limit = 500;
if (!is_group_owner) {
sigma_dut_print(dut, DUT_MSG_INFO,
"Waiting to start dhcp client");
sleep(5); /* Wait for IP */
miracast_start_dhcp_client(dut, output_ifname);
sleep(5); /* Wait for IP */
if (get_peer_ip_p2p_client(dut, peer_ip_address, output_ifname,
wait_limit) < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not get peer IP");
goto EXIT;
}
} else {
stop_dhcp(dut, output_ifname, 1);
/* For GO read the DHCP Lease File */
sigma_dut_print(dut, DUT_MSG_INFO,
"Waiting to start dhcp server");
start_dhcp(dut, output_ifname, 1);
sleep(5);
if (get_peer_ip_p2p_go(dut, peer_ip_address, wait_limit) < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not get peer IP");
goto EXIT;
}
}
extn_start_wfd_connection = dlsym(dut->miracast_lib,
"start_wfd_connection");
if (extn_start_wfd_connection) {
extn_start_wfd_connection(NULL, peer_ip_address,
session_management_control_port,
1 - dut->wfd_device_type,
&rtsp_session_id);
} else {
sigma_dut_print(dut, DUT_MSG_INFO,
"dlsym seems to have error %p %p",
dut->miracast_lib, extn_start_wfd_connection);
}
EXIT:
sigma_dut_print(dut, DUT_MSG_INFO, "Reached Miracast thread exit");
return NULL;
}
/*----------------------------------------------------------------------
WFD Source IE: 000601101c440036
len WFD device info control port throughput
110] [00000 00100010 000] [00011 10001000 100] [00000 00000110 110]
= 7236
WFD Sink IE: 000601511c440036
len WFD device info control port throughput
110] [00000 00101010 001] [00011 10001000 100] [00000 00000110 110]
= 7236
WFD device info:
BITS NAME DESCRIPTION
-------------------------------------------
1:0 WFD Device Type 0b00: WFD Source
0b01: Primary Sink
0b10: Secondary Sink
0b11: Dual Role, either WFD Source/Primary sink
5:4 WFD Session 0b00: Not available for WFD Session
Availibility 0b01: Available for WFD Session
0b10, 0b11: Reserved
6 WSD Support Bit 0b0: WFD Service Discovery not supported
0b1: WFD Service Discovery supported
8 CP Support Bit 0b0: Content Protection via HDCP not supported
0b1: Content Protection via HDCP supported
---------------------------------------------------------------------------
*/
static void miracast_set_wfd_ie(struct sigma_dut *sigma_dut)
{
const char *intf = sigma_dut->station_ifname;
if (sigma_dut->main_ifname != NULL)
intf = get_main_ifname(sigma_dut);
sigma_dut_print(sigma_dut, DUT_MSG_DEBUG, "miracast_set_wfd_ie() = intf = %s",
intf);
wpa_command(intf, "SET wifi_display 1");
if (sigma_dut->wfd_device_type == 0) {
wpa_command(intf, "WFD_SUBELEM_SET 0 000601101c440036");
wpa_command(intf, "WFD_SUBELEM_SET 11 00020000");
} else {
wpa_command(intf, "WFD_SUBELEM_SET 0 000601511c440036");
wpa_command(intf, "WFD_SUBELEM_SET 11 00020001");
}
}
void miracast_init(struct sigma_dut *dut)
{
sigma_dut_print(dut, DUT_MSG_DEBUG, "Create thread pool for VDS");
miracast_set_wfd_ie(dut);
sigma_dut_print(dut, DUT_MSG_DEBUG, "Clear groupID @ start");
}
void miracast_deinit(struct sigma_dut *dut)
{
(void) miracast_unload(dut);
}
static void miracast_generate_string_cmd(struct sigma_cmd *cmd, char *strcmd,
size_t size)
{
int i = 0;
char *pos, *end;
int ret;
if (!strcmd)
return;
strcmd[0] = '\0';
pos = strcmd;
end = strcmd + size;
for (i = 0; i < cmd->count; i++) {
ret = snprintf(pos, end - pos, "%s,%s,", cmd->params[i],
cmd->values[i]);
if (ret < 0 || ret >= end - pos)
break;
pos += ret;
}
pos = strrchr(strcmd, ',');
if (pos)
*pos = '\0';
printf("Miracast: generated command: %s\n", strcmd);
}
static void * auto_go_thread_entry(void *ptr)
{
struct sigma_dut *dut = ptr;
struct wpa_ctrl *ctrl;
char event_buf[64];
char *peer = NULL;
int res = 0;
char macaddress[32];
char peer_ip_address[32];
int rtsp_session_id = -1;
int (*extn_start_wfd_connection)(const char *,
const char *, /* Peer IP */
int, /* RTSP port number */
int, /* WFD Device Type; 0-Source,
1-P-Sink, 2-Secondary Sink */
int *); /* for returning session ID */
stop_dhcp(dut, wfd_ifname, 1);
/* For auto-GO, start the DHCP server and wait for 5 seconds */
start_dhcp(dut, wfd_ifname, 1);
sleep(5); /* Wait for IP */
sigma_dut_print(dut, DUT_MSG_INFO, "Wait for AP-STA-CONNECTED");
ctrl = open_wpa_mon(wfd_ifname); /* Refer to wfd_ifname */
if (!ctrl) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Failed to open wpa_supplicant monitor connection");
goto THR_EXIT;
}
res = get_wpa_cli_event(dut, ctrl, "AP-STA-CONNECTED",
event_buf, sizeof(event_buf));
wpa_ctrl_detach(ctrl);
wpa_ctrl_close(ctrl);
if (res < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Could not get event before timeout");
goto THR_EXIT;
}
sigma_dut_print(dut, DUT_MSG_DEBUG, "STA Connected Event: '%s'",
event_buf);
peer = strchr(event_buf, ' ');
if (!peer) {
sigma_dut_print(dut, DUT_MSG_ERROR, "Could not find STA MAC");
goto THR_EXIT;
}
peer++;
strlcpy(macaddress, peer, sizeof(macaddress));
if (get_peer_ip_p2p_go(dut, peer_ip_address, 30) < 0) {
sigma_dut_print(dut, DUT_MSG_ERROR, "Could not get peer IP");
goto THR_EXIT;
}
sigma_dut_print(dut, DUT_MSG_INFO, "dlsym %p", dut->miracast_lib);
extn_start_wfd_connection = dlsym(dut->miracast_lib,
"start_wfd_connection");
if (!extn_start_wfd_connection)
sigma_dut_print(dut, DUT_MSG_INFO, "dlsym function NULL");
else
extn_start_wfd_connection(NULL, peer_ip_address,
session_management_control_port,
1 - dut->wfd_device_type,
&rtsp_session_id);
THR_EXIT:
sigma_dut_print(dut, DUT_MSG_INFO, "Reached auto GO thread exit");
return NULL;
}
void miracast_sta_reset_default(struct sigma_dut *dut, struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *intf = dut->station_ifname;
int (*extn_sta_reset_default)(const char *);
char string_cmd[MIRACAST_CMD_LEN] = { 0 };
if (dut->main_ifname != NULL)
intf = get_main_ifname(dut);
sigma_dut_print(dut, DUT_MSG_DEBUG,
"miracast_sta_reset_default() = intf = %s", intf);
stop_dhcp(dut, intf, 1); /* IFNAME argument is ignored */
miracast_stop_dhcp_client(dut, intf);
/* This is where vendor Miracast library is loaded and function pointers
* to Miracast functions (defined by CAPI) are loaded. */
if (miracast_load(dut) != 0) {
sigma_dut_print(dut, DUT_MSG_INFO,
"Fail to load Miracast library");
return;
}
if (!dut->miracast_lib) {
sigma_dut_print(dut, DUT_MSG_ERROR,
"Miracast library is absent");
return;
}
dlerror();
miracast_generate_string_cmd(cmd, string_cmd, sizeof(string_cmd));
extn_sta_reset_default = dlsym(dut->miracast_lib, "sta_reset_default");
if (extn_sta_reset_default)
extn_sta_reset_default(string_cmd);
/* delete threads if any */
/* TODO: if dut->rtsp_thread_handle running, call
* miracast_release_rtsp_thread_resources(dut); */
}
void miracast_start_autonomous_go(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd, char *ifname)
{
strlcpy(wfd_ifname, ifname, sizeof(wfd_ifname));
(void) pthread_create(&dut->rtsp_thread_handle, NULL,
auto_go_thread_entry, dut);
}
static void miracast_rtsp_thread_create(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
(void) pthread_create(&dut->rtsp_thread_handle, NULL,
miracast_rtsp_thread_entry, dut);
}
int miracast_dev_send_frame(struct sigma_dut *dut, struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *frame_name = get_param(cmd, "FrameName");
/* const char *source = get_param(cmd, "Source"); */
/* const char *destination = get_param(cmd, "Destination"); */
/* const char *dev_type = get_param(cmd, "DevType"); */
const char *rtsp_msg_type = get_param(cmd, "RtspMsgType");
/* const char *wfd_session_id = get_param(cmd, "WfdSessionID"); */
int (*dev_send_frame)(const char *);
char string_cmd[MIRACAST_CMD_LEN] = { 0 };
dev_send_frame = dlsym(dut->miracast_lib, "dev_send_frame");
if (!dev_send_frame)
return -1;
sigma_dut_print(dut, DUT_MSG_DEBUG, "miracast_dev_send_frame 1");
miracast_generate_string_cmd(cmd, string_cmd, sizeof(string_cmd));
if (!frame_name)
return 0;
if (strcasecmp(frame_name, "RTSP") != 0)
return 0;
if (!rtsp_msg_type)
return 0;
if (strcasecmp(rtsp_msg_type, "PAUSE") == 0 ||
strcasecmp(rtsp_msg_type, "TRIGGER-PAUSE") == 0) {
/* Call RTSP Pause */
dev_send_frame(string_cmd);
return 1;
}
if (strcasecmp(rtsp_msg_type, "PLAY") == 0 ||
strcasecmp(rtsp_msg_type, "TRIGGER-PLAY") == 0) {
/* Call RTSP Play */;
dev_send_frame(string_cmd); /* Not for secure playback */
return 1;
}
if (strcasecmp(rtsp_msg_type, "TEARDOWN") == 0 ||
strcasecmp(rtsp_msg_type, "TRIGGER-TEARDOWN") == 0) {
dev_send_frame(string_cmd); /* RTSP Teardown */
return 1;
}
if (strcasecmp(rtsp_msg_type,"SET_PARAMETER") == 0) {
const char *set_parameter = get_param(cmd, "SetParameter");
const char *transportType = get_param(cmd, "TransportType");
if (set_parameter == NULL && transportType == NULL) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Invalid Set Parameter value");
return 0;
}
if (1) /* (strcasecmp(set_parameter, "Standby") == 0) */ {
dev_send_frame(string_cmd);
return 1;
}
/* TODO More needs to be implemented when the spec is clearer */
return 1;
}
if (strcasecmp(rtsp_msg_type, "SETUP") == 0) {
dev_send_frame(string_cmd);
/* TODO More needs to be implemented when the spec is clearer */
return 1;
}
if (strcasecmp(frame_name, "WFD_ProbeReq") == 0) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Unsupported WFD Probe Request");
return 0;
}
if (strcasecmp(frame_name, "WFD_ServiceDiscReq") == 0) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Unsupported WFD Service Discovery");
return 0;
}
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Unsupported dev_send_frame");
return 0;
}
int miracast_dev_exec_action(struct sigma_dut *dut, struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *service_type = get_param(cmd,"ServiceType");
int (*dev_exec_action)(const char *);
char string_cmd[MIRACAST_CMD_LEN] = { 0 };
sigma_dut_print(dut, DUT_MSG_DEBUG, "miracast_dev_exec_frame");
if (service_type) {
char resp_buf[128];
sigma_dut_print(dut, DUT_MSG_DEBUG, "MDNS Instance Name = %s",
dut->mdns_instance_name);
strlcpy(resp_buf, "InstanceName,", sizeof(resp_buf));
strlcat(resp_buf + strlen(resp_buf), dut->mdns_instance_name,
sizeof(resp_buf) - strlen(resp_buf));
send_resp(dut, conn, SIGMA_COMPLETE, resp_buf);
return 0;
}
miracast_generate_string_cmd(cmd, string_cmd, sizeof(string_cmd));
dev_exec_action = dlsym(dut->miracast_lib, "dev_exec_action");
if (!dev_exec_action)
return -2;
return dev_exec_action(string_cmd);
}
int miracast_preset_testparameters(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *mdns_disc = get_param(cmd, "mdns_disc");
const char *mdns_role = get_param(cmd, "mdns_role");
char string_cmd[MIRACAST_CMD_LEN];
int ret = 0;
char string_resp[64] = { 0 };
int (*extn_sta_preset_test_parameter)(const char *, char *, int);
miracast_load(dut);
miracast_generate_string_cmd(cmd, string_cmd, sizeof(string_cmd));
extn_sta_preset_test_parameter =
dlsym(dut->miracast_lib, "sta_preset_testparameters");
if (!extn_sta_preset_test_parameter)
return -1;
ret = extn_sta_preset_test_parameter(string_cmd, string_resp,
sizeof(string_resp));
if (ret == SIGMA_ERROR) {
send_resp(dut, conn, SIGMA_ERROR,
"Miracast extension reported error in the command sta_preset_testparameters");
return 0;
}
if (mdns_disc && mdns_role) {
if (strlen(string_resp))
strlcpy(dut->mdns_instance_name, string_resp,
sizeof(dut->mdns_instance_name));
else
dut->mdns_instance_name[0] = '\0';
}
return 1;
}
static int get_p2p_peers(struct sigma_dut *dut, char *respbuf, size_t bufsize)
{
char addr[1024], cmd[64];
const char *intf = get_main_ifname(dut);
int ret;
char *pos, *end;
pos = respbuf;
end = respbuf + bufsize;
if (wpa_command_resp(intf, "P2P_PEER FIRST", addr, 128) >= 0) {
addr[17] = '\0';
strlcpy(respbuf, addr, bufsize);
pos += strlen(respbuf);
ret = snprintf(cmd, sizeof(cmd), "P2P_PEER NEXT-%s", addr);
if (ret < 0 || ret >= sizeof(cmd))
return -1;
memset(addr, 0, sizeof(addr));
while (wpa_command_resp(intf, cmd, addr, sizeof(addr)) >= 0) {
if (memcmp(addr, "FAIL", 4) == 0)
break;
addr[17] = '\0';
ret = snprintf(pos, end - pos, " %s", addr);
if (ret < 0 || ret >= end - pos)
break;
pos += ret;
ret = snprintf(cmd, sizeof(cmd), "P2P_PEER NEXT-%s",
addr);
if (ret < 0 || ret >= sizeof(cmd))
break;
memset(addr, 0, sizeof(addr));
}
}
return 0;
}
int miracast_cmd_sta_get_parameter(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
/* const char *intf = get_param(cmd, "Interface"); */
/* const char *program = get_param(cmd, "Program"); */
const char *parameter = get_param(cmd, "Parameter");
char resp_buf[1024]; /* may need to change depending on number of peer
devices found */
if (!parameter) {
send_resp(dut, conn, SIGMA_COMPLETE, "NULL");
return 0;
}
if (strcasecmp(parameter, "DiscoveredDevList") == 0) {
int len = strlen("DeviceList,");
snprintf(resp_buf, sizeof(resp_buf), "DeviceList,");
get_p2p_peers(dut, resp_buf + len, 1024 - len);
} else {
send_resp(dut, conn, SIGMA_ERROR, "Invalid Parameter");
return 0;
}
send_resp(dut, conn, SIGMA_COMPLETE, resp_buf);
return 0;
}
int miracast_mdns_start_wfd_connection(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *init_wfd = get_param(cmd, "init_wfd");
int int_init_wfd = -1;
int rtsp_session_id = -1;
char cmd_response[128];
int (*extn_start_wfd_connection)(const char *,
const char *, /* Peer IP */
int, /* RTSP port number */
int, /* WFD Device Type; 0-Source,
1-P-Sink, 2-Secondary Sink */
int *); /* for returning session ID */
int count = 0;
char *sig_resp = NULL;
if (init_wfd)
int_init_wfd = atoi(init_wfd);
extn_start_wfd_connection = dlsym(dut->miracast_lib,
"start_wfd_connection");
if (!extn_start_wfd_connection)
return -1;
if (int_init_wfd != 0) {
extn_start_wfd_connection(NULL, NULL, -100,
1 - dut->wfd_device_type,
&rtsp_session_id);
while (rtsp_session_id == -1 && count < 60) {
count++;
sleep(1);
}
snprintf(cmd_response, sizeof(cmd_response),
"result,NULL,GroupID,NULL,WFDSessionID,%.8d",
rtsp_session_id);
sig_resp = cmd_response;
} else {
rtsp_session_id = 0;
extn_start_wfd_connection(NULL, NULL, -100,
1 - dut->wfd_device_type,
&rtsp_session_id);
sig_resp = "result,NULL,GroupID,NULL,WFDSessionID,NULL";
}
send_resp(dut, conn, SIGMA_COMPLETE, sig_resp);
return 0;
}
static enum sigma_cmd_result cmd_start_wfd_connection(struct sigma_dut *dut,
struct sigma_conn *conn,
struct sigma_cmd *cmd)
{
const char *intf = get_param(cmd, "Interface");
const char *peer_address = get_param(cmd, "PeerAddress");
const char *init_wfd = get_param(cmd, "init_wfd");
const char *intent_val = get_param(cmd, "intent_val");
const char *oper_chan = get_param(cmd, "oper_chn");
const char *coupled_session = get_param(cmd, "coupledSession");
const char *tdls = get_param(cmd, "TDLS");
const char *r2_connection = get_param(cmd, "R2ConnectionType");
char ssid[128];
char p2p_dev_address[18];
char output_intf[16];
char sig_resp_buf[1024];
char cmd_buf[256]; /* Command buffer */
char resp_buf[256]; /* Response buffer to UCC */
int go_intent = 0;
int freq;
int res = 0;
char buf_peer[4096];
char *availability = NULL;
char command[64];
int avail_bit;
char ctemp[2];
char rtspport[5] = { '7', '2', '3', '6', '\0' };
int is_group_owner = 0;
char peer_ip_address[32];
int sm_control_port = 7236;
int rtsp_session_id = -1;
int (*extn_start_wfd_connection)(const char *,
const char *, /* Peer IP */
int, /* RTSP port number */
int, /* WFD Device Type; 0-Source,
1-P-Sink, 2-Secondary Sink */
int *); /* for returning session ID */
int count = 0;
if (r2_connection) {
if (strcasecmp(r2_connection, "Infrastructure") == 0)
return miracast_mdns_start_wfd_connection(dut, conn,
cmd);
}
if (coupled_session && atoi(coupled_session) == 1) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Coupled Session is unsupported");
return 0;
}
if (tdls && atoi(tdls) == 1) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,TDLS is unsupported");
return 0;
}
if (intent_val) {
go_intent = atoi(intent_val);
if (go_intent > 15)
go_intent = 1;
}
if (p2p_discover_peer(dut, intf, peer_address, 1) < 0) {
send_resp(dut, conn, SIGMA_ERROR,
"errorCode,Could not find peer");
return 0;
}
snprintf(cmd_buf, sizeof(cmd_buf), "P2P_CONNECT %s", peer_address);