「🏗️」 wip: wtf is this

includes/help.h

@@ -1,15 +1,27 @@
 #pragma once
 
 #include <stdint.h>
-typedef struct {
+struct options{
 	char   *name;
 	char	opt;
 	char   *doc;
 	uint8_t arg_nb;
 	uint8_t grp;
-} options_t;
+};
 
-static options_t options[] = {
+typedef enum {
+	USAGE,
+	HELP,
+	VERSION,
+	VERBOSE,
+	COUNT,
+	SIZE,
+	TIMEOUT,
+	LINGER,
+	INTERVAL
+} options_nb_t;
+
+static struct options options[] = {
 #define GRP 0 // AKA random useless sh*t
 	{"usage", 'u', "give a short usage message", 0, GRP},
 	{"help", '?', "give this help list", 0, GRP},
@@ -22,12 +34,12 @@ static options_t options[] = {
 	{"count", 'c', "stop after sending NUMBER packets", 1, GRP},
 	{"size", 's', "send NUMBER data octets", 1, GRP},
 	{"timeout", 'w', "stop after N seconds", 1, GRP},
-	{"ttl", 't', "specify N as time-to-live", 1, GRP},
+	{"linger", 'W', "number of seconds to wait for response", 1, GRP},
 	{"interval", 'i', "wait NUMBER seconds between sending each packet", 1, GRP}
 #undef GRP
 };
 
-#define OPT_NB 9
+#define OPT_NB 10
 
 #define FT_PING_V "0.1"
 

includes/ping.h

@@ -1,20 +1,32 @@
 #pragma once
 
+#include "bits/types/struct_timeval.h"
+#include "help.h"
+#include "opt_parse.h"
 #include <stdbool.h>
+#include <stdint.h>
 
-extern char *exec_name;
+extern char	  *exec_name;
+extern int	   tx_count;
+extern int	   rx_count;
+extern char	  *address;
+extern double *times;
 
 typedef struct {
-	bool verbose;
-	int	 count;
-	int	 size;
-	int	 timeout;
-	int	 ttl;
-	int	 interval;
-} ping_t;
+	bool	 verbose;
+	uint32_t count;
+	uint16_t size;
+	uint16_t timeout;
+	uint16_t linger;
+	uint16_t interval;
+} options_t;
 
-#define DEFAULT_COUNT -1
 #define DEFAULT_VERBOSE false
-#define DEFAULT_SIZE 0
-#define DEFAULT_INTERVAL 0
-#define DEFAULT_TIMEOUT 0
+
+#define DEFAULT_SIZE 64
+#define DEFAULT_INTERVAL 1
+#define DEFAULT_TIMEOUT -1
+#define DEFAULT_COUNT -1
+#define DEFAULT_LINGER 10
+
+int send_ping(args_t *args);

includes/utils.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void append_time(double time);

src/main.c

@@ -6,18 +6,21 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-char *exec_name;
+char   *exec_name;
+double *times = NULL;
+int		rx_count = 0;
+int		tx_count = 0;
 
 void init_args_t(args_t *args) {
 	OPT_WHILE {
 		args->opts[i] = false;
-		args->arg[i] = 0;
+		args->arg[i] = -1;
 		i++;
 	}
 	args->hosts = NULL;
 }
 
-int handle_options(args_t *args, char **av) {
+int handle_options(args_t *args) {
 	if (args->opts[1]) {
 		print_help();
 		return EXIT_SUCCESS;
@@ -37,8 +40,11 @@ int handle_options(args_t *args, char **av) {
 
 int main(int ac, char **av) {
 	exec_name = *av;
+
 	args_t args;
+
 	init_args_t(&args);
+
 	if (ac > 1) {
 		int ret = opt_parse(av, &args);
 		if (ret == -1) {
@@ -48,7 +54,7 @@ int main(int ac, char **av) {
 			free(args.hosts);
 			return ret;
 		} else {
-			ret = handle_options(&args, av);
+			ret = handle_options(&args);
 			free(args.hosts);
 			return ret;
 		}

src/parsing/help.c

@@ -57,20 +57,22 @@ void print_help(void) {
 void print_parse_err(error_t err, char *opt) {
 	switch (err) {
 	case MISSING_HOST:
-		printf("%s: missing host operand\n", exec_name);
+		fprintf(stderr, "%s: missing host operand\n", exec_name);
 		break;
 	case INVALID_OPT:
-		printf("%s: invalid option -- %s\n", exec_name, opt);
+		fprintf(stderr, "%s: invalid option -- %s\n", exec_name, opt);
 		break;
 	case NEED_ARG:
-		printf("%s: option '%s' requires an argument\n", exec_name, opt);
+		fprintf(stderr, "%s: option '%s' requires an argument\n", exec_name,
+				opt);
 		break;
 	case ERR_ARG:
-		printf("%s: option '%s' invalid argument \n", exec_name, opt);
+		fprintf(stderr, "%s: option '%s' invalid argument \n", exec_name, opt);
 		break;
 	}
 
-	printf("Try 'ping --help' or 'ping --usage' for more information.\n");
+	fprintf(stderr,
+			"Try 'ping --help' or 'ping --usage' for more information.\n");
 }
 
 void print_usage(void) {

src/ping/init_ping.c

@@ -0,0 +1,67 @@
+#include "help.h"
+#include "opt_parse.h"
+#include <ping.h>
+
+#include <bits/types/struct_timeval.h>
+#include <netinet/in.h>
+#include <netinet/ip_icmp.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+struct icmp test;
+
+int init_socket(args_t *args) {
+	int sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
+	if (sock < 0) {
+		fprintf(stderr,
+				"%s: can't create socket maybe try in root next time :D",
+				exec_name);
+		return -1;
+	}
+
+	struct linger linger;
+	linger.l_linger =
+		args->arg[LINGER] == -1 ? DEFAULT_TIMEOUT : args->arg[LINGER];
+	linger.l_onoff = true;
+	if (setsockopt(sock, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger)) < 0) {
+		fprintf(stderr,
+				"can't setsockopt for the linger maybe try a different one");
+		return -1;
+	}
+	return sock;
+}
+
+unsigned short gen_checksum(unsigned short *addr, int count) {
+	unsigned long sum = 0;
+
+	while (count > 1) {
+		sum += *addr++;
+		count -= 2;
+	}
+	if (count > 0) {
+		sum += *(unsigned char *)addr;
+	}
+
+	sum = (sum >> 16) + (sum & 0xFFFF);
+	sum += (sum >> 16);
+
+	return (~sum);
+}
+
+void init_packet(char *buf, int seq, uint32_t size) {
+	memset(buf, 0, size);
+	struct icmp *packet = (struct icmp *)buf;
+
+	packet->icmp_type = ICMP_ECHO;
+	packet->icmp_code = 0;
+	packet->icmp_id = getpid() & 0xFFFF;
+	packet->icmp_seq = seq;
+
+	memset(buf + sizeof(struct icmphdr), 0x42, size - sizeof(struct icmphdr));
+
+	packet->icmp_cksum = 0;
+	packet->icmp_cksum = gen_checksum((unsigned short *)packet, size);
+}

src/ping/send_icmp.c

@@ -0,0 +1,54 @@
+#include <utils.h>
+#include <opt_parse.h>
+#include <ping.h>
+
+#include <arpa/inet.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int send_icmp(int socket, char *buf, struct sockaddr_in *addr, uint32_t size) {
+	int bytes_send = sendto(socket, buf, (unsigned long)size, 0,
+							(struct sockaddr *)addr, sizeof(*addr));
+
+	if (bytes_send < 0) {
+		fprintf(stderr, "sendto failed can't send packet");
+		return -1;
+	}
+	return bytes_send;
+}
+
+int receive_icmp(int socket, char *buf, uint32_t size,
+				 struct sockaddr_in *addr) {
+	socklen_t addr_len = sizeof(*addr);
+	int		  bytes =
+		recvfrom(socket, buf, size, 0, (struct sockaddr *)addr, &addr_len);
+
+	return bytes;
+}
+
+void process_icmp(char *buf, int bytes, struct sockaddr_in *addr, int seq,
+				  struct timeval *tv_start, struct timeval *tv_end) {
+	struct ip	*ip = (struct ip *)buf;
+	int			 len = ip->ip_hl << 2;
+	struct icmp *icmp = (struct icmp *)(buf + len);
+
+	if (icmp->icmp_type == ICMP_ECHOREPLY &&
+		icmp->icmp_type == (getpid() & 0xFFFF)) {
+		rx_count++;
+
+		double rtt = (tv_end->tv_sec - tv_start->tv_sec) / 1000.0 +
+					 (tv_end->tv_usec - tv_start->tv_usec) * 1000.0;
+
+		append_time(rtt);
+
+		printf("%d bytes from %s: icmp_seq=%d ttl=%d time=%.3f", bytes - len,
+			   inet_ntoa(addr->sin_addr), icmp->icmp_seq, ip->ip_ttl, rtt);
+	}
+}

src/ping/send_ping.c

@@ -0,0 +1,47 @@
+#include "help.h"
+#include <opt_parse.h>
+#include <ping.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+void sigint(int sig) {
+	printf("--- %s ping statistics ---", address);
+	printf("%d packets transmitted, %d packets received, %f%% packet loss",
+		   tx_count, rx_count, (tx_count - rx_count / 2.0) * 100);
+	printf("round-trip min/avg/max/stddev = %d/%d/%d/%d");
+}
+
+options_t init_opt(args_t *args) {
+	options_t opt;
+	opt.verbose = args->opts[VERBOSE] != false ? true : DEFAULT_VERBOSE;
+	opt.count = args->arg[COUNT] != -1 ? args->arg[COUNT] : DEFAULT_COUNT;
+	opt.size = args->arg[SIZE] != -1 ? args->arg[SIZE] : DEFAULT_SIZE;
+	opt.timeout =
+		args->arg[TIMEOUT] != -1 ? args->arg[TIMEOUT] : DEFAULT_TIMEOUT;
+	opt.interval =
+		args->arg[INTERVAL] != -1 ? args->arg[INTERVAL] : DEFAULT_INTERVAL;
+	opt.linger = args->arg[LINGER] != -1 ? args->arg[LINGER] : DEFAULT_LINGER;
+
+	return opt;
+}
+
+int send_ping(args_t *args) {
+	options_t	   opt = init_opt(args);
+	struct timeval loop_start;
+	struct timeval loop_end;
+
+	gettimeofday(&loop_start, 0);
+	while () {
+	}
+	return EXIT_SUCCESS;
+}

src/send_ping.c

@@ -1,5 +0,0 @@
-#include <opt_parse.h>
-
-int send_ping(args_t *args) {
-
-}

src/utils.c

@@ -0,0 +1,14 @@
+#include <ping.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+void	append_time(double time) {
+	if (times == NULL) {
+		times = malloc(sizeof(double));
+		times[0] = time;
+	} else {
+		times = reallocarray(times, rx_count, sizeof(double));
+		times[rx_count - 1] = time;
+	}
+}
+