int main(int argc, char *argv[])
{
struct timespec ts;
char *p;
if (argc != 2)
goto err;
p = strtotimespec(argv[1], &ts);
if (*p)
goto err;
while (nanosleep(&ts, &ts) == -1 && errno == EINTR)
;
return 0;
err:
fprintf(stderr, "Usage: %s seconds[.fraction]\n", argv[0]);
return 1;
}
/*
* Function: parse_options()
*
* Description:
* This function parse the options
*
* Argument:
* argc: the number of argument
* argv: arguments
* info_p: pointer to data of querier information
* bg_p: pointer to the flag of working in backgrond
*
* Return value:
* None
*/
void
parse_options(int argc, char *argv[], struct igmp_info *info_p, int *bg_p)
{
int optc; /* option */
unsigned long opt_ul; /* option value in unsigned long */
double opt_d; /* option value in double */
uint8_t max_resp; /* Max Resp Code */
char *maddr; /* multicast address */
char *saddrs; /* comma separated array of source addresses */
max_resp = IGMP_MAX_HOST_REPORT_DELAY;
maddr = NULL;
saddrs = NULL;
while ((optc = getopt(argc, argv, "I:m:s:r:t:i:obdh")) != EOF) {
switch (optc) {
case 'I':
info_p->ifindex = if_nametoindex(optarg);
if (info_p->ifindex == 0) {
fprintf(stderr, "specified interface is incorrect\n");
usage(program_name, EXIT_FAILURE);
}
break;
case 'm':
maddr = strdup(optarg);
if (maddr == NULL)
fatal_error("strdup()");
break;
case 's':
saddrs = strdup(optarg);
if (saddrs == NULL)
fatal_error("strdup()");
break;
case 'r':
opt_ul=strtoul(optarg, NULL, 0);
if (opt_ul > 255) {
fprintf(stderr, "Max Resp Code should be less then 256\n");
usage(program_name, EXIT_FAILURE);
}
max_resp = opt_ul;
break;
case 't':
opt_d = strtod(optarg, NULL);
if (opt_d < 0.0) {
fprintf(stderr, "Timeout should be positive value\n");
usage(program_name, EXIT_FAILURE);
}
info_p->timeout = opt_d;
break;
case 'i':
if (strtotimespec(optarg, &info_p->interval)) {
fprintf(stderr, "Interval is something wrong\n");
usage(program_name, EXIT_FAILURE);
}
break;
case 'o':
info_p->timeout = -1.0;
break;
case 'b':
*bg_p = 1;
break;
case 'd':
debug = 1;
break;
case 'h':
usage(program_name, EXIT_SUCCESS);
break;
default:
usage(program_name, EXIT_FAILURE);
}
}
if (info_p->ifindex == 0) {
fprintf(stderr, "specified interface seems incorrect\n");
usage(program_name, EXIT_FAILURE);
}
if ((info_p->query = create_query(max_resp, maddr, saddrs)) == NULL)
usage(program_name, EXIT_FAILURE);
if (maddr)
free(maddr);
if (saddrs)
free(saddrs);
}
/*
* Function: parse_options()
*
* Description:
* This function parse the options
*
* Argument:
* argc: the number of argument
* argv: arguments
* info_p: pointer to data of icmp data to modify
* bg_p: pointer to the flag of working in backgrond
*
* Return value:
* None
*/
void
parse_options(int argc, char *argv[], struct icmp6_info *info_p, int *bg_p)
{
int optc; /* option */
unsigned long opt_ul; /* option value in unsigned long */
double opt_d; /* option value in double */
struct in6_addr opt_addr; /* option value in struct in_addr */
struct sockaddr_ll opt_addr_ll; /* option value in struct sockaddr_ll */
char *ifname; /* interface name where datagrams go out */
int is_mld_query; /* set to non-zero if sending MLDv2 query */
char *mld_saddrs; /* comma separated array of source addresses */
uint16_t max_resp; /* Max Resp Code */
int is_specified_daddr_ll = 0;
int is_specified_saddr = 0;
int is_specified_daddr = 0;
ifname = NULL;
is_mld_query = 0;
mld_saddrs = NULL;
max_resp = MY_MLD_MAX_HOST_REPORT_DELAY;
while ((optc = getopt(argc, argv, "I:S:M:D:t:w:obdhs:iLnvma:r:")) != EOF ) {
switch (optc) {
case 'I':
if(if_nametoindex(optarg) == 0) {
fprintf(stderr, "specified interface is incorrect\n");
usage(program_name, EXIT_FAILURE);
}
ifname = strdup(optarg);
if (ifname == NULL)
fatal_error("strdup() failed.");
break;
case 'S':
if (inet_pton(AF_INET6, optarg, &opt_addr) <= 0) {
fprintf(stderr, "Source address is wrong\n");
usage(program_name, EXIT_FAILURE);
}
info_p->saddr = opt_addr;
is_specified_saddr = 1;
break;
case 'M':
if (eth_pton(AF_INET6, optarg, &opt_addr_ll)) {
fprintf(stderr, "Destination MAC address is wrong\n");
usage(program_name, EXIT_FAILURE);
}
info_p->daddr_ll = opt_addr_ll;
is_specified_daddr_ll = 1;
break;
case 'D':
if (inet_pton(AF_INET6, optarg, &opt_addr) <= 0) {
fprintf(stderr, "Destination address is wrong\n");
usage(program_name, EXIT_FAILURE);
}
info_p->daddr = opt_addr;
is_specified_daddr = 1;
break;
case 't':
opt_d = strtod(optarg, NULL);
if (opt_d < 0.0) {
fprintf(stderr, "Timeout should be positive value\n");
usage(program_name, EXIT_FAILURE);
}
info_p->timeout = opt_d;
break;
case 'w':
if (strtotimespec(optarg, &info_p->interval)) {
fprintf(stderr, "Interval is something wrong\n");
usage(program_name, EXIT_FAILURE);
}
break;
case 'o':
info_p->timeout = -1.0;
break;
case 'b':
*bg_p = 1;
break;
case 'd':
debug = 1;
break;
case 'h':
usage(program_name, EXIT_SUCCESS);
break;
/* Options for echo request */
case 's':
opt_ul = strtoul(optarg, NULL, 0);
if (opt_ul > ICMPV6_DATA_MAXSIZE) {
fprintf(stderr, "Data size sholud be less than %d\n", ICMPV6_DATA_MAXSIZE + 1);
usage(program_name, EXIT_FAILURE);
}
info_p->data_size = opt_ul;
break;
/* Options for fake */
case 'i':
info_p->fake_flag |= FAKE_DADDR;
break;
case 'L':
info_p->fake_flag |= FAKE_PLEN;
break;
case 'n':
info_p->fake_flag |= FAKE_NXT;
break;
case 'v':
info_p->fake_flag |= FAKE_VERSION;
break;
/* Options for MLDv2 query */
case 'm':
is_mld_query = 1;
break;
case 'a':
mld_saddrs = strdup(optarg);
if (mld_saddrs == NULL)
fatal_error("strdup()");
break;
case 'r':
opt_ul=strtoul(optarg, NULL, 0);
if (opt_ul > 0xFFFF) {
fprintf(stderr, "Max Resp Code should be less than 65536\n");
usage(program_name, EXIT_FAILURE);
}
max_resp = opt_ul;
break;
default:
usage(program_name, EXIT_FAILURE);
}
}
if (ifname == NULL) {
fprintf(stderr, "Outgoing interface is not specified\n");
usage(program_name, EXIT_FAILURE);
}
specify_hw_addr(&info_p->saddr_ll, ifname);
if (! is_specified_saddr) {
fprintf(stderr, "Source IP address is not specified\n");
usage(program_name, EXIT_FAILURE);
}
if (is_mld_query) { /* MLDv2 query */
if (info_p->fake_flag) {
fprintf(stderr, "It is not permitted to break MLDv2 query\n");
usage(program_name, EXIT_FAILURE);
}
if (! is_specified_daddr)
info_p->daddr = in6addr_allnodes;
calc_hd_mcastaddr(&info_p->daddr_ll, &info_p->daddr);
if (create_mld_query(info_p, max_resp, mld_saddrs))
exit(EXIT_FAILURE);
} else { /* echo request */
if (info_p->fake_flag)
srand(getpid());
if (! is_specified_daddr_ll) {
fprintf(stderr, "Destination MAC address is not specified\n");
usage(program_name, EXIT_FAILURE);
}
if (! is_specified_daddr) {
fprintf(stderr, "Destination IP address is not specified\n");
usage(program_name, EXIT_FAILURE);
}
create_echo_request(info_p);
}
info_p->daddr_ll.sll_ifindex = if_nametoindex(ifname);
}
