124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* parsing.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/04/26 17:01:53 by tomoron #+# #+# */
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/* Updated: 2025/04/26 17:08:01 by tomoron ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "includes/ft_ping.h"
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char *get_value_in_arg(char *arg, int end)
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{
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char *res;
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res = strstr(arg, "=");
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if(res - arg != end)
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return (0);
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if (!res)
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return (0);
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res++;
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return(res);
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}
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int get_setting(int *i, int argc, char **argv, int end)
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{
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char *value;
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char *tmp;
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value = 0;
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if(argv[*i][0] == '-' && argv[*i][1] == '-')
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value = get_value_in_arg(argv[*i], end);
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else if((*i) + 1 < argc)
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value = argv[++(*i)];
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if(!value)
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{
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fprintf(stderr, "%s: option '%s' requires an option\n", argv[0], argv[*i]);
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return(0);
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}
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tmp = value;
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while(*tmp)
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{
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if(!isdigit(*tmp))
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{
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fprintf(stderr, "%s: invalid value (`%s' near `%s')\n", argv[0], value, tmp);
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return(0);
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}
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tmp++;
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}
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return(atoi(value));
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}
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void parse_opt(int *i, t_settings *set, int argc, char **argv)
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{
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if(!strcmp(argv[*i], "-?") || !strcmp(argv[*i], "--help"))
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show_help(set, *argv);
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else if(!strcmp(argv[*i], "-c") || !strncmp(argv[*i], "--count", 7))
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set->count = get_setting(i, argc, argv, 7);
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else if(!strcmp(argv[*i], "-w") || !strncmp(argv[*i], "--timeout", 9))
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set->timeout = get_setting(i, argc, argv, 9);
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else if(!strncmp(argv[*i], "--ttl", 5))
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{
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set->ttl = get_setting(i, argc, argv, 5);
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set->setTtl = 1;
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}
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else if(!strcmp(argv[*i], "-f") || !strcmp(argv[*i], "--flood"))
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set->flood = 1;
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else if(!strcmp(argv[*i], "-n") || !strcmp(argv[*i], "--numeric"))
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set->no_resolve = 1;
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else
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{
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fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], argv[*i]);
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set->err = 1;
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}
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}
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int check_values(t_settings *set, char *name)
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{
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if(set->setTtl)
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{
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if(set->ttl == 0)
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{
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fprintf(stderr, "%s: option value too small: %d\n", name, set->ttl);
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return(0);
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}
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else if (set->ttl >= 256)
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{
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fprintf(stderr, "%s: option value too big: %d\n", name, set->ttl);
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return(0);
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}
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}
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return(1);
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}
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t_settings parse_args(int argc, char **argv)
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{
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int i;
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t_settings res;
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i = 1;
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bzero(&res, sizeof(t_settings));
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res.count = -1;
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res.timeout = -1;
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while(i < argc)
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{
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if(*argv[i] == '-')
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parse_opt(&i, &res, argc, argv);
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else
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{
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if(!add_host(&res, argv[i]))
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{
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res.err = 1;
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return(res);
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}
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}
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i++;
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}
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check_values(&res, argv[0]);
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return(res);
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}
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