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tomoron
2025-04-26 19:53:55 +02:00
parent 621b9fc4ee
commit 4e344d945e
5 changed files with 100 additions and 72 deletions
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188
srcs/ft_ping.c
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@ -1,188 +0,0 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_ping.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/04/24 00:03:56 by tomoron #+# #+# */
/* Updated: 2025/04/25 23:25:43 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "includes/ft_ping.h"
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));
}
char *get_value_in_arg(char *arg, int end)
{
char *res;
res = strstr(arg, "=");
if(res - arg != end)
return (0);
if (!res)
return (0);
res++;
return(res);
}
int get_setting(int *i, int argc, char **argv, int end)
{
char *value;
char *tmp;
value = 0;
if(argv[*i][0] == '-' && argv[*i][1] == '-')
value = get_value_in_arg(argv[*i], end);
else if((*i) + 1 < argc)
value = argv[++(*i)];
if(!value)
{
fprintf(stderr, "%s: option '%s' requires an option\n", argv[0], argv[*i]);
return(0);
}
tmp = value;
while(*tmp)
{
if(!isdigit(*tmp))
{
fprintf(stderr, "%s: invalid value (`%s' near `%s')\n", argv[0], value, tmp);
return(0);
}
tmp++;
}
return(atoi(value));
}
void parse_opt(int *i, t_settings *set, int argc, char **argv)
{
if(!strcmp(argv[*i], "-?") || !strcmp(argv[*i], "--help"))
show_help(set, *argv);
else if(!strcmp(argv[*i], "-c") || !strncmp(argv[*i], "--count", 7))
set->count = get_setting(i, argc, argv, 7);
else if(!strcmp(argv[*i], "-w") || !strncmp(argv[*i], "--timeout", 9))
set->timeout = get_setting(i, argc, argv, 9);
else if(!strncmp(argv[*i], "--ttl", 5))
{
set->ttl = get_setting(i, argc, argv, 5);
set->setTtl = 1;
}
else if(!strcmp(argv[*i], "-f") || !strcmp(argv[*i], "--flood"))
set->flood = 1;
else if(!strcmp(argv[*i], "-n") || !strcmp(argv[*i], "--numeric"))
set->no_resolve = 1;
else
{
fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], argv[*i]);
set->err = 1;
}
}
int add_host(t_settings *res, char *host)
{
t_host_list *new;
t_host_list *tmp;
new = malloc(sizeof(t_host_list));
if(!new)
return(0);
new->host = host;
new->next = 0;
tmp = res->hosts;
while(tmp && tmp->next)
tmp = tmp->next;
if(tmp)
tmp->next = new;
else
res->hosts = new;
return(1);
}
void free_hosts(t_host_list *list)
{
t_host_list *tmp;
while(list)
{
printf("free : %s\n", list->host);
tmp = list->next;
free(list);
list = tmp;
}
}
void init_defaults(t_settings *set)
{
set->count = -1;
set->timeout = -1;
}
int check_values(t_settings *set, char *name)
{
if(set->setTtl)
{
if(set->ttl == 0)
{
fprintf(stderr, "%s: option value too small: %d\n", name, set->ttl);
return(0);
}
else if (set->ttl >= 256)
{
fprintf(stderr, "%s: option value too big: %d\n", name, set->ttl);
return(0);
}
}
return(1);
}
t_settings parse_args(int argc, char **argv)
{
int i;
t_settings res;
i = 1;
bzero(&res, sizeof(t_settings));
init_defaults(&res);
while(i < argc)
{
if(*argv[i] == '-')
parse_opt(&i, &res, argc, argv);
else
{
if(!add_host(&res, argv[i]))
{
res.err = 1;
return(res);
}
}
i++;
}
check_values(&res, argv[0]);
return(res);
}
int main(int argc, char **argv)
{
t_settings settings;
settings = parse_args(argc, argv);
if(settings.stop || settings.err)
{
free_hosts(settings.hosts);
return((settings.err != 0) * 64);
}
if(!settings.hosts)
{
fprintf(stderr, "%s: missing host operand\n", argv[0]);
return(64);
}
free_hosts(settings.hosts);
return(0);
}