tom/ft_ping
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icmp echo can be sent and reply is sent but not yet handled

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tomoron
2025-04-30 01:57:42 +02:00
parent 48c1eef0a3
commit 0021a51f61
5 changed files with 185 additions and 32 deletions
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42
srcs/main.c
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@ -1,12 +1,12 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_ping.c :+: :+: :+: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/04/24 00:03:56 by tomoron #+# #+# */
/* Updated: 2025/04/26 17:08:50 by tomoron ### ########.fr */
/* Updated: 2025/04/29 18:39:49 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -15,18 +15,46 @@
void show_help(t_settings *set, char *name)
{
set->stop = 1;
write(1, "Usage: ", 7);
write(1, name, strlen(name));
write(1, HELP_MESSAGE, sizeof(HELP_MESSAGE));
printf("Usage: %s %s", name, HELP_MESSAGE);
}
int init_socket(char *name)
{
int res;
res = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
if(res == -1)
{
if(errno == EPERM)
fprintf(stderr, "%s: socket creation permission denied, make sure you are runing as root\n", name);
else
fprintf(stderr, "%s: can't initialize socket\n", name);
return(-1);
}
fcntl(res, F_SETFL, O_NONBLOCK);
return(res);
}
uint16_t get_id(void)
{
struct timeval time;
uint16_t res;
gettimeofday(&time,0);
res = (uint8_t)time.tv_sec;
res |= (uint8_t)time.tv_usec << 8;
return(res);
}
int main(int argc, char **argv)
{
t_settings settings;
settings = parse_args(argc, argv);
if(settings.stop || settings.err)
settings.socket = init_socket(argv[0]);
settings.id = get_id();
if(settings.stop || settings.err || settings.socket == -1)
{
free_hosts(settings.hosts);
return((settings.err != 0) * 64);
@ -36,7 +64,7 @@ int main(int argc, char **argv)
fprintf(stderr, "%s: missing host operand\n", argv[0]);
return(64);
}
send_pings(settings);
send_pings(&settings);
free_hosts(settings.hosts);
return(0);
}