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coroutines

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This commit is contained in:
Jack Halford 2017-09-26 18:59:18 +02:00
parent 259309fa0d
commit a75160775a
6 changed files with 74 additions and 74 deletions
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2
nmap/Makefile
View file

@ -50,7 +50,7 @@ $(NAME): $(LIBFT_LIB) $(OBJ_DIR) $(OBJS) $(CLIENT_OBJ)
-I $(INC_DIR) \
-I $(LIBFT_INC) \
$(LIBFT_LIB) $(CLIENT_OBJ) $(FLAGS) \
-lm -lpcap -lpthread
-lm -lpcap -lpthread /usr/local/lib/libdill.a
@printf "\r\033[38;5;117m✓ MAKE $@ \033[0m\033[K\n"
$(LIBFT_LIB):

12
nmap/includes/nmap.h
View file

@ -30,6 +30,8 @@
# include <pthread.h>
# include <ifaddrs.h>
# include <libdill.h>
# define SCAN_TCP (1 << 0)
# define SCAN_SYN (1 << 1)
# define SCAN_NULL (1 << 2)
@ -48,12 +50,12 @@ struct s_data
{
t_flag flag;
char **av_data;
t_list *dest_addr;
t_list *host;
struct sockaddr source_addr;
t_list *port;
int ports[USHRT_MAX + 1];
int threads;
int scan;
int src_port;
int scan;
};
/* enum e_scan_type */
@ -84,7 +86,7 @@ struct s_host
int sock_udp;
int sock_icmp;
t_port_status results[USHRT_MAX + 1];
char scanning[USHRT_MAX + 1];
int channels[USHRT_MAX + 1];
struct sockaddr *addr;
size_t addrlen;
};
@ -99,6 +101,6 @@ static t_cliopts g_opts[];
int nmap_parse(int ac, char **av, t_data *data);
void nmap(t_data *data);
void *nmap_listener(void *arg);
void nmap_listener(void *arg);
#endif

10
nmap/srcs/listener.c
View file

@ -2,16 +2,17 @@
static pcap_t *pcap_obj = NULL;
static void packet_callback(u_char *tmp, const struct pcap_pkthdr *pkthdr, const u_char *packet)
static void packet_callback(u_char *arg, const struct pcap_pkthdr *pkthdr, const u_char *packet)
{
(void)tmp;
(void)pkthdr;
(void)packet;
t_data *data = (t_data*)arg;
printf("received packet !!!\n");
hexdump(&packet, sizeof(packet));
}
void *nmap_listener(void *arg)
coroutine void nmap_listener(void *arg)
{
t_data *data;
char errbuf[PCAP_ERRBUF_SIZE];
@ -30,7 +31,7 @@ void *nmap_listener(void *arg)
fprintf(stderr, "pcap_open_live: %s", errbuf);
exit(EXIT_FAILURE);
}
if (!(str = ft_str3join("host ", ((t_host*)data->dest_addr->content)->ip, " and (tcp or icmp)")))
if (!(str = ft_str3join("host ", ((t_host*)data->host->content)->ip, " and (tcp or icmp)")))
{
exit(EXIT_FAILURE);
}
@ -51,5 +52,4 @@ void *nmap_listener(void *arg)
exit(EXIT_FAILURE);
}
free(str);
return (NULL);
}

9
nmap/srcs/main.c
View file

@ -1,8 +1,9 @@
#include "nmap.h"
#define NMAP_USAGE1 " [--ip HOST] [--file FILE]"
#define NMAP_USAGE2 " [--ports PORTS] [--speedup [NOMBRE]] [--scan [TYPE]] HOST"
#define NMAP_USAGE2 " [--ports PORTS] [--speedup [NUMBER]] [--scan [TYPE]] HOST"
int nmap_ports(t_data *data, int ch)
int main(int ac, char **av)
{
@ -24,8 +25,10 @@ int main(int ac, char **av)
fprintf(stderr, "couldn't reserve port\n");
exit(1);
}
pthread_t listener;
pthread_create(&listener, NULL, &nmap_listener, &data);
int port_chan = chmake(sizeof(int));
go(nmap_listener(&data));
go(nmap_ports(&data, port_chan));
/* go(nmap_collector(&data)); */
nmap(&data);
return (0);
}

56
nmap/srcs/nmap.c
View file

@ -1,15 +1,3 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* nmap.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2017/04/22 14:10:24 by jhalford #+# #+# */
/* Updated: 2017/04/23 18:18:41 by jhalford ### ########.fr */
/* */
/* ************************************************************************** */
#include "nmap.h"
unsigned short cksum(void *b, int len)
@ -26,56 +14,58 @@ unsigned short cksum(void *b, int len)
return (~(sum + (sum >> 16)));
}
int nmap_scan_tcp(t_data *data, struct iphdr *iph, t_host *host, int port)
coroutine void nmap_scan_port(t_data *data, struct iphdr *iph, int port)
{
int channel;
t_tcp_packet packet;
packet.iph = *iph;
channel = data.channels[port];
packet.iph = *iph;
tcphdr_init(&packet.tcph);
packet.tcph.dest = htons(port);
packet.tcph.source = htons(data->src_port);
/* packet.tcph.syn = 1; */
packet.tcph.check = cksum(&packet, sizeof(t_tcp_packet));
if ((host.sock_tcp = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) == -1)
perror("server: socket");
int val = 1;
if (setsockopt(host.sock_tcp, IPPROTO_IP, IP_HDRINCL, &val, sizeof(val)) == -1)
return (1);
if (sendto(host->sock_tcp, &packet, sizeof(packet), 0, host->addr, host->addrlen) < 0)
{
perror("sendto");
exit(1);
}
/* chrecv(channel, &buf, sizeof()) */
printf("packet sent\n");
hexdump(&packet, sizeof(packet));
sleep(2);
return (0);
}
/* int nmap_scan(char *host, int port, int scan) */
/* { */
/* (void)scan; */
/* nmap_scan_syn(sockfd, servinfo); */
/* return (0); */
/* } */
void nmap(t_data *data)
{
t_list *list;
t_host *host;
struct iphdr iph;
list = data->dest_addr;
if (!list)
return ;
for (host = list->content; list != NULL; list = list->next )
{
printf("scanning %s...\n", host->dn);
iphdr_init(&iph);
iph.protocol = IPPROTO_TCP;
iph.daddr = *(uint32_t*)&((struct sockaddr_in*)host->addr)->sin_addr;
iph.saddr = *(uint32_t*)&((struct sockaddr_in*)&data->source_addr)->sin_addr;
iph.tot_len = htons(sizeof(t_tcp_packet));
nmap_scan_tcp(data, &iph, host, 80);
break ;
for (t_list *list = data->host; list != NULL; list = list->next)
{
t_host *host = list->content;
printf("scanning %s...\n", host->dn);
for (port = 1; port < USHRT_MAX; port++;)
{
if (data.ports[port])
go(nmap_scan_port(data, iph, port));
}
}
}

51
nmap/srcs/parser.c
View file

@ -1,5 +1,15 @@
#include "nmap.h"
static t_cliopts g_opts[] =
{
{'h', "host", 0, 0, nmap_get_host, 0},
/* {'f', "file", 0, 0, nmap_get_file, 0}, */
/* {'p', "ports", 0, 0, nmap_get_ports, 0}, */
{'t', "threads", 0, 0, nmap_get_threads, 0},
{'s', "scan", 0, 0, nmap_get_scan, 0},
{0, 0, 0, 0, 0, 0},
};
static int nmap_get_host(char *node, t_data *data)
{
t_host host;
@ -37,14 +47,7 @@ static int nmap_get_host(char *node, t_data *data)
/* MUST DO rDNS search here */
/* printf("rDNS record for %s: %s\n", addrstr, DOMAIN NAME WITH RDNS); */
if ((host.sock_tcp = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) == -1)
perror("server: socket");
int val = 1;
if (setsockopt(host.sock_tcp, IPPROTO_IP, IP_HDRINCL, &val, sizeof(val)) == -1)
return (1);
ft_lsteadd(&data->dest_addr, ft_lstnew(&host, sizeof(host)));
ft_lsteadd(&data->host, ft_lstnew(&host, sizeof(host)));
return (0);
}
@ -91,14 +94,14 @@ int nmap_parse(int ac, char **av, t_data *data)
{
struct ifaddrs *ifaddrs, *ifa_first;
(void)ac;
data->dest_addr = NULL;
data->port = 0;
data->host = NULL;
bzero(data->ports, USHRT_MAX + 1);
data->threads = 0;
data->scan = 0;
if (cliopts_get(av, g_opts, data))
return (ft_perror("nmap"));
if (!data->dest_addr && data->av_data && data->av_data)
if (!data->host && data->av_data && data->av_data)
nmap_get_host(*data->av_data, data);
if (!data->scan)
data->scan = SCAN_TCP;
@ -108,25 +111,27 @@ int nmap_parse(int ac, char **av, t_data *data)
if (ifaddrs)
{
ifaddrs=ifaddrs->ifa_next;
printf("source=%s\n", ifaddrs->ifa_name);
printf("if=%s\n", ifaddrs->ifa_name);
data->source_addr = *ifaddrs->ifa_addr;
}
else
{
printf("couldn't find an IF that isn't a loopback");
fprintf(stderr, "couldn't find an internet interface\n");
exit(1);
}
freeifaddrs(ifa_first);
for (t_list *list = data->host; list != NULL; list = list->next)
{
t_host *host = list->content;
printf("scanning %s...\n", host->dn);
for (port = 1; port < USHRT_MAX; port++;)
{
if (data.ports[port])
host->channels[port] = chmake(sizeof(t_tcp_packet));
}
}
return (0);
}
static t_cliopts g_opts[] =
{
{'i', "ip", 0, 0, nmap_get_host, 0},
/* {'f', "file", 0, 0, nmap_get_file, 0}, */
/* {'p', "ports", 0, 0, nmap_get_ports, 0}, */
{'t', "threads", 0, 0, nmap_get_threads, 0},
{'s', "scan", 0, 0, nmap_get_scan, 0},
{0, 0, 0, 0, 0, 0},
};