From 2d46d00df8333358911313d29df5aa1b071d0dba Mon Sep 17 00:00:00 2001
From: Jack Halford <jack@crans.org>
Date: Fri, 25 Aug 2017 13:31:18 +0200
Subject: [PATCH] stuff

---
 nmap/Makefile        |  3 ++-
 nmap/includes/nmap.h | 10 +++++++-
 nmap/srcs/listener.c | 54 ++++++++++++++++++++++++++++++++++++++++++++
 nmap/srcs/main.c     | 32 +++++++++++++++++++++++++-
 nmap/srcs/nmap.c     | 27 +---------------------
 5 files changed, 97 insertions(+), 29 deletions(-)
 create mode 100644 nmap/srcs/listener.c

diff --git a/nmap/Makefile b/nmap/Makefile
index e5eacf61..1851414d 100644
--- a/nmap/Makefile
+++ b/nmap/Makefile
@@ -33,6 +33,7 @@ OBJ_DIR		=	objs/
 SRC_BASE	=	\
 main.c\
 nmap.c\
+listener.c\
 
 SRCS		=	$(addprefix $(SRC_DIR), $(SRC_BASE))
 OBJS		=	$(addprefix $(OBJ_DIR), $(SRC_BASE:.c=.o))
@@ -48,7 +49,7 @@ $(NAME):	$(LIBFT_LIB) $(OBJ_DIR) $(OBJS) $(CLIENT_OBJ)
 		-I $(INC_DIR) \
 		-I $(LIBFT_INC) \
 		$(LIBFT_LIB) $(CLIENT_OBJ) $(FLAGS) \
-		-lm -lpcap
+		-lm -lpcap -lpthread
 	@printf "\r\033[38;5;117m✓ MAKE $@ \033[0m\033[K\n"
 
 $(LIBFT_LIB):
diff --git a/nmap/includes/nmap.h b/nmap/includes/nmap.h
index bb09df58..61e78762 100644
--- a/nmap/includes/nmap.h
+++ b/nmap/includes/nmap.h
@@ -27,6 +27,7 @@
 # include <arpa/inet.h>
 # include <pcap.h>
 # include <sys/wait.h>
+# include <pthread.h>
 
 # define SCAN_TCP	(1 << 0)
 # define SCAN_SYN	(1 << 1)
@@ -42,14 +43,21 @@ struct	s_data
 {
 	t_flag	flag;
 	char	**av_data;
-	char	*host;
+	t_list	*host;
 	t_list	*port;
 	int		threads;
 	int		scan;
 };
 
+struct s_host
+{
+	struct sockaddr_in	*addr;
+	char				*
+};
+
 static t_cliopts	g_opts[];
 
 void	nmap(t_data *data);
+void	*nmap_listener(void *arg);
 
 #endif
diff --git a/nmap/srcs/listener.c b/nmap/srcs/listener.c
new file mode 100644
index 00000000..99b7de85
--- /dev/null
+++ b/nmap/srcs/listener.c
@@ -0,0 +1,54 @@
+#include "nmap.h"
+
+static pcap_t *pcap_obj = NULL;
+
+static void packet_callback(u_char *tmp, const struct pcap_pkthdr *pkthdr, const u_char *packet)
+
+{
+	(void)tmp;
+	(void)pkthdr;
+	(void)packet;
+	printf("received packet !!!");
+}
+
+void	*nmap_listener(void *arg)
+{
+	t_data *data;
+	char errbuf[PCAP_ERRBUF_SIZE];
+	bpf_u_int32 netp;
+	bpf_u_int32 maskp;
+	struct bpf_program fp;
+	char *str;
+
+	data = (t_data*)arg;
+	if (pcap_lookupnet("any", &netp, &maskp, errbuf) == -1)
+	{
+		exit(EXIT_FAILURE);
+	}
+	if (!(pcap_obj = pcap_open_live("any", BUFSIZ, 0, -1, errbuf)))
+	{
+		fprintf(stderr, "pcap_open_live: %s", errbuf);
+		exit(EXIT_FAILURE);
+	}
+	if (!(str = ft_str3join("host ", data->host, " and (tcp or icmp)")))
+	{
+		exit(EXIT_FAILURE);
+	}
+	if (pcap_compile(pcap_obj, &fp, str, 1, netp) == -1)
+	{
+		exit(EXIT_FAILURE);
+	}
+	if (pcap_setfilter(pcap_obj, &fp) == -1)
+	{
+		exit(EXIT_FAILURE);
+	}
+	/* signal(SIGALRM, sigalrm_handler); */
+	printf("listener loop\n");
+	fflush(stdout);
+	if (pcap_loop(pcap_obj, -1, packet_callback, (u_char*)data) == -1)
+	{
+		exit(EXIT_FAILURE);
+	}
+	free(str);
+	return (NULL);
+}
diff --git a/nmap/srcs/main.c b/nmap/srcs/main.c
index 396d1a43..9f813a1e 100644
--- a/nmap/srcs/main.c
+++ b/nmap/srcs/main.c
@@ -5,7 +5,35 @@
 
 int		nmap_get_host(char *opt_arg, t_data *data)
 {
-	data->host = opt_arg;
+	t_host	*host;
+
+	host = opt_arg;
+	struct sockaddr_in	*addr;
+	struct addrinfo		*servinfo, hints;
+	char				addrstr[INET_ADDRSTRLEN];
+	int					sockfd;
+
+	memset (&hints, 0, sizeof (hints));
+	hints.ai_family = PF_UNSPEC;
+	hints.ai_socktype = SOCK_RAW;
+	hints.ai_flags = AI_CANONNAME;
+
+	if (getaddrinfo(host, NULL, &hints, &servinfo))
+	{
+		fprintf(stderr, "Failed to resolve \"%s\"\n", host);
+		return (1);
+	}
+	host->addr = (struct sockaddr_in*)servinfo->ai_addr;
+	inet_ntop(AF_INET, &(addr->sin_addr), addrstr, INET_ADDRSTRLEN);
+	host->addrstr = addrstr;
+
+	/* MUST DO AND rDNS search here */
+	/* printf("rDNS record for %s: %s\n", addrstr, DOMAIN NAME WITH RDNS); */
+
+	if ((sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) == -1)
+		perror("server: socket");
+
+	ft_lsteadd(&data->host, &host);
 	return (0);
 }
 
@@ -87,6 +115,8 @@ int		main(int ac, char **av)
 		exit(1);
 	}
 
+	pthread_t listener;
+	pthread_create(&listener, NULL, &nmap_listener, &data);
 	nmap(&data);
 	return (0);
 }
diff --git a/nmap/srcs/nmap.c b/nmap/srcs/nmap.c
index ecd9395d..88038090 100644
--- a/nmap/srcs/nmap.c
+++ b/nmap/srcs/nmap.c
@@ -24,33 +24,8 @@ int		nmap_scan_syn(int sockfd, struct addrinfo *p)
 int		nmap_scan(char *host, int port, int scan)
 {
 
-	struct sockaddr_in	*addr;
-	struct addrinfo		*servinfo, hints;
-	char				addrstr[INET_ADDRSTRLEN];
-	int					sockfd;
 
-	memset (&hints, 0, sizeof (hints));
-	hints.ai_family = PF_UNSPEC;
-	hints.ai_socktype = SOCK_RAW;
-	hints.ai_flags = AI_CANONNAME;
-
-	(void)scan;
-	printf("SCAN @ %s:%i\n", host, port);
-	if (getaddrinfo(host, "http", &hints, &servinfo))
-	{
-		fprintf(stderr, "Failed to resolve \"%s\"\n", host);
-		return (1);
-	}
-	addr = (struct sockaddr_in*)servinfo->ai_addr;
-	inet_ntop(AF_INET, &(addr->sin_addr), addrstr, INET_ADDRSTRLEN);
-
-	/* MUST DO AND rDNS search here */
-	/* printf("rDNS record for %s: %s\n", addrstr, DOMAIN NAME WITH RDNS); */
-
-	if ((sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) == -1)
-		perror("server: socket");
-
-	nmap_scan_syn(sockfd);
+	nmap_scan_syn(sockfd, servinfo);
 
 	freeaddrinfo(servinfo);