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utils.c
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utils.c
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/* Copyright (c) 2020 Wi-Fi Alliance */
/* Permission to use, copy, modify, and/or distribute this software for any */
/* purpose with or without fee is hereby granted, provided that the above */
/* copyright notice and this permission notice appear in all copies. */
/* THE SOFTWARE IS PROVIDED 'AS IS' AND THE AUTHOR DISCLAIMS ALL */
/* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED */
/* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL */
/* THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR */
/* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING */
/* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF */
/* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT */
/* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS */
/* SOFTWARE. */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#ifdef _SYSLOG_
#include <syslog.h>
#endif
#include <fcntl.h>
#include <unistd.h>
#include <sys/wait.h>
#ifdef _OPENWRT_
#include <sys/time.h>
#endif
#include <time.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <linux/if.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <stdint.h>
#include <errno.h>
typedef uint8_t u_int8_t;
typedef uint16_t u_int16_t;
typedef uint32_t u_int32_t;
#include "vendor_specific.h"
#include "utils.h"
#include "eloop.h"
/* Log */
int stdout_level = LOG_LEVEL_DEBUG;
int syslog_level = LOG_LEVEL_INFO;
/* multiple VAPs */
int interface_count = 0;
int configured_interface_count = 0;
struct interface_info interfaces[16];
int band_mbssid_cnt[16];
struct interface_info* default_interface;
static struct loopback_info loopback;
/* bridge used for wireless interfaces */
char wlans_bridge[32];
#if UPLOAD_TC_APP_LOG
/* per test case control app log */
FILE *app_log;
extern struct sockaddr_in *tool_addr;
#endif
#ifdef HOSTAPD_SUPPORT_MBSSID_WAR
int use_openwrt_wpad = 0;
#endif
void send_continuous_loopback_packet(void *eloop_ctx, void *sock_ctx);
void debug_print_timestamp(void) {
time_t rawtime;
struct tm *info;
char buffer[32];
time(&rawtime);
info = localtime(&rawtime);
if (info) {
strftime(buffer, sizeof(buffer), "%b %d %H:%M:%S", info);
}
printf("%s ", buffer);
#if UPLOAD_TC_APP_LOG
if (app_log) {
fprintf(app_log, "%s ", buffer);
}
#endif
}
void indigo_logger(int level, const char *fmt, ...) {
char *format, *log_type;
int maxlen;
#ifdef _SYSLOG_
int priority;
#endif
va_list ap;
maxlen = strlen(fmt) + 100;
format = malloc(maxlen);
if (!format) {
return;
}
switch (level) {
case LOG_LEVEL_DEBUG_VERBOSE:
log_type = "debugverbose";
break;
case LOG_LEVEL_DEBUG:
log_type = "debug";
break;
case LOG_LEVEL_INFO:
log_type = "info";
break;
case LOG_LEVEL_NOTICE:
log_type = "notice";
break;
case LOG_LEVEL_WARNING:
log_type = "warning";
break;
default:
log_type = "info";
break;
}
snprintf(format, maxlen, "controlappc.%8s %s", log_type, fmt);
if (level >= stdout_level) {
debug_print_timestamp();
va_start(ap, fmt);
vprintf(format, ap);
va_end(ap);
printf("\n");
#if UPLOAD_TC_APP_LOG
if (app_log) {
va_start(ap, fmt);
vfprintf(app_log, format, ap);
fprintf(app_log, "\n");
va_end(ap);
}
#endif
}
#ifdef _SYSLOG_
if (level >= stdout_level) {
switch (level) {
case LOG_LEVEL_DEBUG_VERBOSE:
case LOG_LEVEL_DEBUG:
priority = LOG_DEBUG;
break;
case LOG_LEVEL_INFO:
priority = LOG_INFO;
break;
case LOG_LEVEL_NOTICE:
priority = LOG_NOTICE;
break;
case LOG_LEVEL_WARNING:
priority = LOG_WARNING;
break;
default:
priority = LOG_INFO;
break;
}
va_start(ap, fmt);
vsyslog(priority, format, ap);
va_end(ap);
}
#endif
}
void open_tc_app_log() {
#if UPLOAD_TC_APP_LOG
if (app_log) {
fclose(app_log);
app_log = NULL;
}
app_log = fopen(APP_LOG_FILE, "w");
if (app_log == NULL) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to open the file %s", APP_LOG_FILE);
}
#endif
}
/* Close file handle and upload test case control app log */
void close_tc_app_log() {
#if UPLOAD_TC_APP_LOG
if (app_log) {
fclose(app_log);
app_log = NULL;
if (tool_addr != NULL) {
http_file_post(inet_ntoa(tool_addr->sin_addr), TOOL_POST_PORT, HAPD_UPLOAD_API, APP_LOG_FILE);
}
}
#endif
}
/* System */
int pipe_command(char *buffer, int buffer_size, char *cmd, char *parameter[]) {
int pipefds[2], len;
pid_t pid;
if (pipe(pipefds) == -1){
indigo_logger(LOG_LEVEL_ERROR, "Failed to create the pipe");
return -1;
}
pid = fork();
if (pid == -1) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to fork");
return -1;
}
if (pid == 0) {
// Replace stdout with the write end of the pipe
dup2(pipefds[1], STDOUT_FILENO);
// Close read to pipe, in child
close(pipefds[0]);
execv(cmd, parameter);
exit(EXIT_SUCCESS);
} else {
close(pipefds[1]);
len = read(pipefds[0], buffer, buffer_size);
indigo_logger(LOG_LEVEL_DEBUG_VERBOSE, "Pipe system call= %s, Return length= %d, result= %s", cmd, len, buffer);
close(pipefds[0]);
wait(NULL); /* Parent waits for the child to terminate */
}
return len;
}
char* read_file(char *fn) {
struct stat st;
int fd, size;
char *buffer = NULL;
memset(&st, 0, sizeof(struct stat));
stat(fn, &st);
size = st.st_size;
fd = open(fn, O_RDONLY);
if (fd) {
buffer = (char*)malloc(sizeof(char)*(size+1));
if (!buffer) {
close(fd);
return buffer;
}
memset(buffer, 0, size+1);
read(fd, buffer, size);
close(fd);
}
return buffer;
}
int write_file(char *fn, char *buffer, int len) {
int fd;
fd = open(fn, O_CREAT | O_WRONLY | O_TRUNC);
if (fd > 0) {
(void)write(fd, buffer, len);
close(fd);
return 0;
}
return -1;
}
int append_file(char *fn, char *buffer, int len) {
int fd;
fd = open(fn, O_CREAT | O_WRONLY | O_APPEND);
if (fd > 0) {
(void)write(fd, buffer, len);
close(fd);
return 0;
}
return -1;
}
/* strrstr(), reversed strstr(), is not available in some compilers. Here is the implementation. */
static char* indigo_strrstr(char *input, const char *token) {
char *result = NULL, *p = NULL;
if (*token == '\0') {
return (char *) input;
}
while (1) {
p = strstr(input, token);
if (p == NULL)
break;
result = p;
input = p + 1;
}
return result;
}
/* Loopback */
int loopback_socket = 0;
static void loopback_server_receive_message(int sock, void *eloop_ctx, void *sock_ctx) {
struct sockaddr_storage from;
unsigned char buffer[BUFFER_LEN];
ssize_t fromlen, len;
(void)eloop_ctx;
(void)sock_ctx;
fromlen = sizeof(from);
len = recvfrom(sock, buffer, BUFFER_LEN, 0, (struct sockaddr *) &from, (socklen_t *)&fromlen);
if (len < 0) {
indigo_logger(LOG_LEVEL_ERROR, "Loopback server recvfrom[server] error");
return ;
}
indigo_logger(LOG_LEVEL_INFO, "Loopback server received length = %d", len);
len = sendto(sock, (const char *)buffer, len, MSG_CONFIRM, (struct sockaddr *)&from, sizeof(from));
indigo_logger(LOG_LEVEL_INFO, "Loopback server echo back length = %d", len);
}
static void loopback_server_timeout(void *eloop_ctx, void *timeout_ctx) {
int s = (intptr_t)eloop_ctx;
(void)timeout_ctx;
qt_eloop_unregister_read_sock(s);
close(s);
loopback_socket = 0;
indigo_logger(LOG_LEVEL_INFO, "Loopback server stops");
}
int loopback_server_start(char *local_ip, char *local_port, int timeout) {
int s = 0;
struct sockaddr_in addr;
socklen_t len = sizeof(addr);
/* Open UDP socket */
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to open server socket");
return -1;
}
/* Bind specific IP */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
if (local_ip) {
addr.sin_addr.s_addr = inet_addr(local_ip);
}
if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to bind server socket");
close(s);
return -1;
}
if (getsockname(s, (struct sockaddr *)&addr, &len) == -1) {
indigo_logger(LOG_LEVEL_INFO, "Failed to get socket port number");
close(s);
return -1;
} else {
indigo_logger(LOG_LEVEL_INFO, "loopback server port number %d\n", ntohs(addr.sin_port));
sprintf(local_port, "%d", ntohs(addr.sin_port));
}
/* Register to eloop and ready for the socket event */
if (qt_eloop_register_read_sock(s, loopback_server_receive_message, NULL, NULL)) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to initiate ControlAppC");
return -1;
}
loopback_socket = s;
qt_eloop_register_timeout(timeout, 0, loopback_server_timeout, (void*)(intptr_t)s, NULL);
indigo_logger(LOG_LEVEL_INFO, "Loopback Client starts ip %s port %s", local_ip, local_port);
return 0;
}
int loopback_server_stop() {
if (loopback_socket) {
qt_eloop_cancel_timeout(loopback_server_timeout, (void*)(intptr_t)loopback_socket, NULL);
qt_eloop_unregister_read_sock(loopback_socket);
close(loopback_socket);
loopback_socket = 0;
}
return 0;
}
int loopback_server_status() {
return !!loopback_socket;
}
unsigned short icmp_checksum(unsigned short *buf, int size)
{
unsigned long sum = 0;
while (size > 1) {
sum += *buf;
buf++;
size -= 2;
}
if (size == 1)
sum += *(unsigned char *)buf;
sum = (sum & 0xffff) + (sum >> 16);
sum = (sum & 0xffff) + (sum >> 16);
return ~sum;
}
void setup_icmphdr(u_int8_t type, u_int8_t code, u_int16_t id,
u_int16_t seq, struct icmphdr *icmphdr, int packet_size)
{
memset(icmphdr, 0, sizeof(struct icmphdr));
icmphdr->type = type;
icmphdr->code = code;
icmphdr->un.echo.id = id;
icmphdr->un.echo.sequence = seq;
icmphdr->checksum = icmp_checksum((unsigned short *)icmphdr, packet_size);
}
void send_one_loopback_icmp_packet(struct loopback_info *info) {
int n;
char server_reply[1600];
struct in_addr insaddr;
struct icmphdr *icmphdr, *recv_icmphdr;
struct iphdr *recv_iphdr;
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(info->target_ip);
icmphdr = (struct icmphdr *)&info->message;
info->pkt_sent++;
setup_icmphdr(ICMP_ECHO, 0, 0, info->pkt_sent, icmphdr, info->pkt_size);
n = sendto(info->sock, (char *)info->message, info->pkt_size, 0, (struct sockaddr *)&addr, sizeof(addr));
if (n < 0) {
indigo_logger(LOG_LEVEL_WARNING, "Send failed on icmp packet %d", info->pkt_sent);
goto done;
}
indigo_logger(LOG_LEVEL_INFO, "Packet %d: Send icmp %d bytes data to ip %s",
info->pkt_sent, n, info->target_ip);
memset(&server_reply, 0, sizeof(server_reply));
n = recv(info->sock, server_reply, sizeof(server_reply), 0);
if (n < 0) {
indigo_logger(LOG_LEVEL_WARNING, "recv failed on icmp packet %d", info->pkt_sent);
goto done;
} else {
recv_iphdr = (struct iphdr *)server_reply;
recv_icmphdr = (struct icmphdr *)(server_reply + (recv_iphdr->ihl << 2));
insaddr.s_addr = recv_iphdr->saddr;
if (!strcmp(info->target_ip, inet_ntoa(insaddr)) && recv_icmphdr->type == ICMP_ECHOREPLY) {
indigo_logger(LOG_LEVEL_INFO, "icmp echo reply from %s, Receive echo %d bytes data", info->target_ip, n - 20);
info->pkt_rcv++;
} else {
indigo_logger(LOG_LEVEL_INFO, "Received packet is not the ICMP reply from the DUT");
}
}
done:
qt_eloop_register_timeout(0, info->rate * 1000000, send_continuous_loopback_packet, info, NULL);
}
void send_one_loopback_udp_packet(struct loopback_info *info) {
char server_reply[1600];
ssize_t recv_len = 0, send_len = 0;
memset(&server_reply, 0, sizeof(server_reply));
info->pkt_sent++;
send_len = send(info->sock, info->message, strlen(info->message), 0);
if (send_len < 0) {
indigo_logger(LOG_LEVEL_INFO, "Send failed on packet %d", info->pkt_sent);
// In case Tool doesn't send stop or doesn't receive stop
if (info->pkt_sent < 1000)
qt_eloop_register_timeout(0, info->rate*1000000, send_continuous_loopback_packet, info, NULL);
return;
}
indigo_logger(LOG_LEVEL_INFO, "Packet %d: Send loopback %d bytes data",
info->pkt_sent, send_len);
recv_len = recv(info->sock, server_reply, sizeof(server_reply), 0);
if (recv_len < 0) {
indigo_logger(LOG_LEVEL_INFO, "recv failed on packet %d", info->pkt_sent);
// In case Tool doesn't send stop or doesn't receive stop
if (info->pkt_sent < 1000)
qt_eloop_register_timeout(0, info->rate*1000000, send_continuous_loopback_packet, info, NULL);
return;
}
info->pkt_rcv++;
indigo_logger(LOG_LEVEL_INFO, "Receive echo %d bytes data", recv_len);
qt_eloop_register_timeout(0, info->rate*1000000, send_continuous_loopback_packet, info, NULL);
}
void send_continuous_loopback_packet(void *eloop_ctx, void *sock_ctx) {
struct loopback_info *info = (struct loopback_info *)eloop_ctx;
(void)eloop_ctx;
(void)sock_ctx;
if (info->pkt_type == DATA_TYPE_ICMP) {
send_one_loopback_icmp_packet(info);
} else {
send_one_loopback_udp_packet(info);
}
}
/* Stop to send continuous loopback data */
int stop_loopback_data(int *pkt_sent)
{
if (loopback.sock <= 0)
return 0;
qt_eloop_cancel_timeout(send_continuous_loopback_packet, &loopback, NULL);
close(loopback.sock);
loopback.sock = 0;
if (pkt_sent)
*pkt_sent = loopback.pkt_sent;
return loopback.pkt_rcv;
}
int send_udp_data(char *target_ip, int target_port, int packet_count, int packet_size, double rate) {
int s = 0, i = 0;
struct sockaddr_in addr;
int pkt_sent = 0, pkt_rcv = 0;
char message[1600], server_reply[1600];
char ifname[32];
ssize_t recv_len = 0, send_len = 0;
struct timeval timeout;
/* Open UDP socket */
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0) {
indigo_logger(LOG_LEVEL_ERROR, "Failed to open socket");
return -1;
}
if (rate < 1) {
timeout.tv_sec = 0;
timeout.tv_usec = rate * 1000000;
} else {
timeout.tv_sec = 1;
timeout.tv_usec = 0;
}
if (is_bridge_created()) {
snprintf(ifname, sizeof(ifname), "%s", get_wlans_bridge());
#ifdef CONFIG_P2P
} else if (get_p2p_group_if(ifname, sizeof(ifname)) != 0)
snprintf(ifname, sizeof(ifname), "%s", get_wireless_interface());
#else
}
#endif /* End Of CONFIG_P2P */
const int len = strnlen(ifname, IFNAMSIZ);
if (setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE, ifname, len) < 0) {
indigo_logger(LOG_LEVEL_ERROR, "failed to bind the interface %s", ifname);
return -1;
}
setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (const char *)&timeout, sizeof(timeout));
setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (const char *)&timeout, sizeof(timeout));
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
if (target_ip) {
addr.sin_addr.s_addr = inet_addr(target_ip);
}
addr.sin_port = htons(target_port);
if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
indigo_logger(LOG_LEVEL_ERROR, "Connect failed. Error");
close(s);
return -1;
}
indigo_logger(LOG_LEVEL_INFO, "packet_count %d rate %lf\n",
packet_count, rate);
/* Continuous data case: reply OK and use eloop timeout to send data */
if (packet_count == -1) {
loopback.sock = s;
loopback.pkt_type = DATA_TYPE_UDP;
loopback.rate = rate;
loopback.pkt_sent = loopback.pkt_rcv = 0;
memset(loopback.message, 0, sizeof(loopback.message));
for (i = 0; (i < packet_size) && (i < (int)sizeof(loopback.message)); i++)
loopback.message[i] = 0x0A;
qt_eloop_register_timeout(0, 0, send_continuous_loopback_packet, &loopback, NULL);
indigo_logger(LOG_LEVEL_INFO, "Send continuous loopback data to ip %s port %u",
target_ip, target_port);
return 0;
}
memset(message, 0, sizeof(message));
for (i = 0; (i < packet_size) && (i < (int)sizeof(message)); i++)
message[i] = 0x0A;
for (pkt_sent = 1; pkt_sent <= packet_count; pkt_sent++) {
memset(&server_reply, 0, sizeof(server_reply));
send_len = send(s, message, strlen(message), 0);
if (send_len < 0) {
indigo_logger(LOG_LEVEL_INFO, "Send failed on packet %d", pkt_sent);
usleep(rate*1000000);
continue;
}
indigo_logger(LOG_LEVEL_INFO, "Packet %d: Send loopback %d bytes data to ip %s port %u",
pkt_sent, send_len, target_ip, target_port);
recv_len = recv(s, server_reply, sizeof(server_reply), 0);
if (recv_len < 0) {
indigo_logger(LOG_LEVEL_INFO, "recv failed on packet %d", pkt_sent);
if (rate > 1)
usleep((rate-1)*1000000);
continue;
}
pkt_rcv++;
usleep(rate*1000000);
indigo_logger(LOG_LEVEL_INFO, "Receive echo %d bytes data", recv_len);
}
close(s);
return pkt_rcv;
}
int send_icmp_data(char *target_ip, int packet_count, int packet_size, double rate)
{
int n, sock;
size_t i;
unsigned char buf[1600], server_reply[1600];
char ifname[32];
struct sockaddr_in addr;
struct in_addr insaddr;
struct icmphdr *icmphdr, *recv_icmphdr;
struct iphdr *recv_iphdr;
struct timeval timeout;
int pkt_sent = 0, pkt_rcv = 0;
sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
if (sock < 0) {
return -1;
}
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(target_ip);
if (rate < 1) {
timeout.tv_sec = 0;
timeout.tv_usec = rate * 1000000;
} else {
timeout.tv_sec = 1;
timeout.tv_usec = 0;
}
if (is_bridge_created()) {
snprintf(ifname, sizeof(ifname), "%s", get_wlans_bridge());
#ifdef CONFIG_P2P
} else if (get_p2p_group_if(ifname, sizeof(ifname)) != 0)
snprintf(ifname, sizeof(ifname), "%s", get_wireless_interface());
#else
}
#endif /* End Of CONFIG_P2P */
const int len = strnlen(ifname, IFNAMSIZ);
if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, ifname, len) < 0) {
indigo_logger(LOG_LEVEL_ERROR, "failed to bind the interface %s", ifname);
return -1;
}
indigo_logger(LOG_LEVEL_DEBUG, "Bind the interface %s", ifname);
setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (const char *)&timeout, sizeof(timeout));
setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (const char *)&timeout, sizeof(timeout));
/* Continuous data case: reply OK and use eloop timeout to send data */
if (packet_count == -1) {
memset(&loopback, 0, sizeof(loopback));
loopback.sock = sock;
loopback.pkt_type = DATA_TYPE_ICMP;
loopback.rate = rate;
loopback.pkt_size = packet_size;
snprintf(loopback.target_ip, sizeof(loopback.target_ip), "%s", target_ip);
for (i = sizeof(struct icmphdr); (i < (size_t)packet_size) && (i < sizeof(loopback.message)); i++)
loopback.message[i] = 0x0A;
qt_eloop_register_timeout(0, 0, send_continuous_loopback_packet, &loopback, NULL);
indigo_logger(LOG_LEVEL_INFO, "Send continuous loopback data to ip %s", loopback.target_ip);
return 0;
}
icmphdr = (struct icmphdr *)&buf;
memset(&buf, 0, sizeof(buf));
for (i = sizeof(struct icmphdr); (i < (size_t)packet_size) && (i < sizeof(buf)); i++)
buf[i] = 0x0A;
for (pkt_sent = 1; pkt_sent <= packet_count; pkt_sent++) {
memset(&server_reply, 0, sizeof(server_reply));
setup_icmphdr(ICMP_ECHO, 0, 0, pkt_sent, icmphdr, packet_size);
n = sendto(sock, (char *)buf, packet_size, 0, (struct sockaddr *)&addr, sizeof(addr));
if (n < 0) {
indigo_logger(LOG_LEVEL_WARNING, "Send failed on icmp packet %d", pkt_sent);
usleep(rate * 1000000);
continue;
}
indigo_logger(LOG_LEVEL_INFO, "Packet %d: Send icmp %d bytes data to ip %s",
pkt_sent, n, target_ip);
n = recv(sock, server_reply, sizeof(server_reply), 0);
if (n < 0) {
indigo_logger(LOG_LEVEL_WARNING, "recv failed on icmp packet %d", pkt_sent);
if (rate > 1)
usleep((rate - 1) * 1000000);
continue;
} else {
recv_iphdr = (struct iphdr *)server_reply;
recv_icmphdr = (struct icmphdr *)(server_reply + (recv_iphdr->ihl << 2));
insaddr.s_addr = recv_iphdr->saddr;
if (!strcmp(target_ip, inet_ntoa(insaddr)) && recv_icmphdr->type == ICMP_ECHOREPLY) {
/* IP header 20 bytes */
indigo_logger(LOG_LEVEL_INFO, "icmp echo reply from %s, Receive echo %d bytes data", target_ip, n - 20);
pkt_rcv++;
} else {
indigo_logger(LOG_LEVEL_INFO, "Received packet is not the ICMP reply from the Destination");
}
}
usleep(rate * 1000000);
}
close(sock);
return pkt_rcv;
}
int send_broadcast_arp(char *target_ip, int *send_count, int rate) {
char buffer[S_BUFFER_LEN];
FILE *fp;
int recv = 0;
#ifdef _OPENWRT_
snprintf(buffer, sizeof(buffer), "arping -I %s %s -c %d -b | grep broadcast", get_wireless_interface(), target_ip, *send_count);
#else
snprintf(buffer, sizeof(buffer), "arping -i %s %s -c %d -W %d | grep packet", get_wireless_interface(), target_ip, *send_count, rate);
#endif
fp = popen(buffer, "r");
if (fp == NULL)
return 0;
#ifdef _OPENWRT_
//Format: Sent 3 probe(s) (3 broadcast(s))
fgets(buffer, sizeof(buffer), fp);
sscanf(buffer, "%*s %d", send_count);
//Format: Received 0 reply (0 request(s), 0 broadcast(s))
fgets(buffer, sizeof(buffer), fp);
sscanf(buffer, "%*s %d", &recv);
#else
//arping output format: 1 packets transmitted, 1 packets received, 0% unanswered (0 extra)
fscanf(fp, "%d %*s %*s %d", send_count, &recv);
#endif
indigo_logger(LOG_LEVEL_INFO, "ARP TEST - send: %d recv: %d", *send_count, recv );
pclose(fp);
return recv;
}
int find_interface_ip(char *ipaddr, int ipaddr_len, char *name) {
struct ifaddrs *ifap, *ifa;
struct sockaddr_in *sa;
char *addr = NULL;
(void) ipaddr_len;
getifaddrs(&ifap);
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET && strcmp(ifa->ifa_name, name) == 0) {
sa = (struct sockaddr_in *) ifa->ifa_addr;
addr = inet_ntoa(sa->sin_addr);
if (ipaddr) {
strcpy(ipaddr, addr);
}
return 1;
}
}
freeifaddrs(ifap);
return 0;
}
int get_mac_address(char *buffer, int size, char *interface) {
struct ifreq s;
int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
(void) size;
if (fd <= 0) {
goto done;
}
strcpy(s.ifr_name, interface);
if (0 == ioctl(fd, SIOCGIFHWADDR, &s)) {
sprintf(buffer, "%02x:%02x:%02x:%02x:%02x:%02x",
(char)s.ifr_addr.sa_data[0]&0x00ff, (char)s.ifr_addr.sa_data[1]&0x00ff, (char)s.ifr_addr.sa_data[2]&0x00ff,
(char)s.ifr_addr.sa_data[3]&0x00ff, (char)s.ifr_addr.sa_data[4]&0x00ff, (char)s.ifr_addr.sa_data[5]&0x00ff);
close(fd);
return 0;
}
close(fd);
done:
return 1;
}
int set_mac_address(char *ifname, char *mac) {
char cmd[S_BUFFER_LEN];
/* If the system doesn't support ip command, please use ifconfig. E.g., */
/* sprintf(cmd, "ifconfig %s hw ether %s", ifname, mac_addr) */
sprintf(cmd, "ip link set dev %s address %s", ifname, mac);
return system(cmd);
}
int bridge_created = 0;
char* get_wlans_bridge() {
return wlans_bridge;
}
int set_wlans_bridge(char* br) {
memset(wlans_bridge, 0, sizeof(wlans_bridge));
snprintf(wlans_bridge, sizeof(wlans_bridge), "%s", br);
printf("\nwlans_bridge = %s.\n", wlans_bridge);
return 0;
}
int is_bridge_created() {
return bridge_created;
}
void bridge_init(char *br) {
/* Create bridge for multiple VAPs */
if (configured_interface_count >= 2) {
create_bridge(br);
add_all_wireless_interface_to_bridge(br);
}
}
int create_bridge(char *br) {
char cmd[S_BUFFER_LEN];
/* Create new bridge */
sprintf(cmd, "brctl addbr %s", br);
system(cmd);
/* Bring up bridge */
control_interface(br, "up");
bridge_created = 1;
return 0;
}
int add_interface_to_bridge(char *br, char *ifname) {
char cmd[S_BUFFER_LEN];
/* Reset IP address */
reset_interface_ip(ifname);
/* Add interface to bridge */
sprintf(cmd, "brctl addif %s %s", br, ifname);
system(cmd);
printf("%s\n", cmd);
return 0;
}
int reset_bridge(char *br) {
char cmd[S_BUFFER_LEN];
/* Bring down bridge */
control_interface(br, "down");
sprintf(cmd, "brctl delbr %s", br);
system(cmd);
bridge_created = 0;
return 0;
}
int add_wireless_interface(char *ifname) {
char cmd[S_BUFFER_LEN];
sprintf(cmd, "iw dev %s interface add %s type managed", get_wireless_interface(), ifname);
system(cmd);
return 0;
}
int delete_wireless_interface(char *ifname) {
char cmd[S_BUFFER_LEN];
sprintf(cmd, "iw dev %s del", ifname);
system(cmd);
return 0;
}
int control_interface(char *ifname, char *op) {
char cmd[S_BUFFER_LEN];
/* If the system doesn't support ip command, please use ifconfig. E.g., */
/* sprintf(cmd, "ifconfig %s %s", ifname, op); */
sprintf(cmd, "ip link set %s %s", ifname, op);
system(cmd);
return 0;
}
int set_interface_ip(char *ifname, char *ip) {
char cmd[S_BUFFER_LEN];
/* If the system doesn't support ip command, please use ifconfig. */
/* Please also update the caller to use netmask instead of CIDR. E.g., */
/* sprintf(cmd, "ifconfig %s %s", ifname, ip); */
sprintf(cmd, "ip addr add %s dev %s", ip, ifname);
system(cmd);
return 0;
}
int reset_interface_ip(char *ifname) {
char cmd[S_BUFFER_LEN];
/* If the system doesn't support ip command, please use ifconfig. E.g., */
/* sprintf(cmd, "ifconfig %s 0.0.0.0", ifname); */
sprintf(cmd, "ip addr flush dev %s", ifname);
return system(cmd);
}
void detect_del_arp_entry(char *ip) {
char buffer[S_BUFFER_LEN];
char res_ip[32], res_dev[16], res_inf[16];
FILE *fp;
snprintf(buffer, sizeof(buffer), "ip neigh show %s", ip);
fp = popen(buffer, "r");
if (fp == NULL)
return;
if (NULL == fgets(buffer, sizeof(buffer), fp)) {
} else if (3 == sscanf(buffer, "%s %s %s", res_ip, res_dev, res_inf)) {
if (!strcmp(res_ip, ip) && !strcmp(res_dev, "dev")) {
indigo_logger(LOG_LEVEL_INFO, "Delete existing ARP entry: %s", ip);
snprintf(buffer, sizeof(buffer), "ip neigh del %s %s %s", res_ip, res_dev, res_inf);
system(buffer);
} else {
indigo_logger(LOG_LEVEL_INFO, "Format mismatch?: %s %s %s\n", res_ip, res_dev, res_inf);
}
}
pclose(fp);
return;
}
int add_all_wireless_interface_to_bridge(char *br) {
int i;
for (i = 0; i < interface_count; i++) {
if (interfaces[i].identifier != UNUSED_IDENTIFIER) {
control_interface(interfaces[i].ifname, "up");
add_interface_to_bridge(br, interfaces[i].ifname);
}
}
return 0;
}
/* Environment */
int service_port = SERVICE_PORT_DEFAULT;
char hapd_exec_file[64];
char hapd_full_exec_path[64] = HAPD_EXEC_FILE_DEFAULT;
char hapd_ctrl_path[64] = HAPD_CTRL_PATH_DEFAULT;
char hapd_full_ctrl_path[128];
char hapd_global_ctrl_path[64] = HAPD_GLOBAL_CTRL_PATH_DEFAULT;
char hapd_conf_file[64] = HAPD_CONF_FILE_DEFAULT;
int hostapd_debug_level = DEBUG_LEVEL_DISABLE;
char wpas_exec_file[64];
char wpas_full_exec_path[64] = WPAS_EXEC_FILE_DEFAULT;
char wpas_ctrl_path[64] = WPAS_CTRL_PATH_DEFAULT;
char wpas_full_ctrl_path[128];
char wpas_global_ctrl_path[64] = WPAS_GLOBAL_CTRL_PATH_DEFAULT;
char wpas_conf_file[64] = WPAS_CONF_FILE_DEFAULT;
int wpas_debug_level = DEBUG_LEVEL_DISABLE;
struct interface_info* assign_wireless_interface_info(struct bss_identifier_info *bss) {
int i;
for (i = 0; i < interface_count; i++) {
char ifname[16];
memcpy(ifname, interfaces[i].ifname, sizeof(ifname));
if ((interfaces[i].band == bss->band) &&
(interfaces[i].identifier == UNUSED_IDENTIFIER)) {