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flowtop.c
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/*
* netsniff-ng - the packet sniffing beast
* Copyright 2011 - 2013 Daniel Borkmann.
* Copyright 2011 Emmanuel Roullit.
* Subject to the GPL, version 2.
*/
#define _LGPL_SOURCE
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <signal.h>
#include <getopt.h>
#include <pthread.h>
#include <signal.h>
#include <netdb.h>
#include <ctype.h>
#include <netinet/in.h>
#include <curses.h>
#include <sys/time.h>
#include <sys/fsuid.h>
#include <libgen.h>
#include <inttypes.h>
#include <poll.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <urcu.h>
#include <urcu/list.h>
#include <urcu/rculist.h>
#include "ui.h"
#include "die.h"
#include "xmalloc.h"
#include "conntrack.h"
#include "config.h"
#include "str.h"
#include "sig.h"
#include "lookup.h"
#include "geoip.h"
#include "built_in.h"
#include "pkt_buff.h"
#include "screen.h"
#include "proc.h"
#include "sysctl.h"
#ifndef NSEC_PER_SEC
#define NSEC_PER_SEC 1000000000L
#endif
#ifndef USEC_PER_SEC
#define USEC_PER_SEC 1000000L
#endif
struct flow_stat {
uint64_t pkts_src, bytes_src;
uint64_t pkts_dst, bytes_dst;
double rate_bytes_src;
double rate_bytes_dst;
double rate_pkts_src;
double rate_pkts_dst;
};
struct proc_entry {
struct cds_list_head entry;
struct cds_list_head flows;
struct rcu_head rcu;
struct timeval last_update;
struct flow_stat stat;
unsigned int pid;
char name[256];
int flows_count;
};
struct flow_entry {
struct cds_list_head proc_head;
struct cds_list_head entry;
struct rcu_head rcu;
uint32_t flow_id, use, status;
uint8_t l3_proto, l4_proto;
uint32_t ip4_src_addr, ip4_dst_addr;
uint32_t ip6_src_addr[4], ip6_dst_addr[4];
uint16_t port_src, port_dst;
uint8_t tcp_state, tcp_flags, sctp_state, dccp_state;
uint64_t timestamp_start, timestamp_stop;
char country_src[128], country_dst[128];
char country_code_src[4], country_code_dst[4];
char city_src[128], city_dst[128];
char rev_dns_src[256], rev_dns_dst[256];
struct proc_entry *proc;
int inode;
bool is_visible;
struct nf_conntrack *ct;
struct timeval last_update;
struct flow_stat stat;
};
struct flow_list {
struct cds_list_head head;
};
struct proc_list {
struct cds_list_head head;
};
enum flow_direction {
FLOW_DIR_SRC,
FLOW_DIR_DST,
};
#ifndef ATTR_TIMESTAMP_START
# define ATTR_TIMESTAMP_START 63
#endif
#ifndef ATTR_TIMESTAMP_STOP
# define ATTR_TIMESTAMP_STOP 64
#endif
#define INCLUDE_IPV4 (1 << 0)
#define INCLUDE_IPV6 (1 << 1)
#define INCLUDE_UDP (1 << 2)
#define INCLUDE_TCP (1 << 3)
#define INCLUDE_DCCP (1 << 4)
#define INCLUDE_ICMP (1 << 5)
#define INCLUDE_SCTP (1 << 6)
#define TOGGLE_FLAG(what, flag) \
do { \
if (what & flag) \
what &= ~flag; \
else \
what |= flag; \
} while (0)
struct sysctl_params_ctx {
int nfct_acct;
int nfct_tstamp;
};
enum rate_units {
RATE_BITS,
RATE_BYTES
};
static volatile bool do_reload_flows;
static volatile bool is_flow_collecting;
static volatile sig_atomic_t sigint = 0;
static int what = INCLUDE_IPV4 | INCLUDE_IPV6 | INCLUDE_TCP;
static struct proc_list proc_list;
static struct flow_list flow_list;
static struct sysctl_params_ctx sysctl = { -1, -1 };
static unsigned int cols, rows;
static WINDOW *screen;
static unsigned int interval = 1;
static bool show_src = false;
static bool resolve_dns = true;
static bool resolve_geoip = true;
static enum rate_units rate_type = RATE_BYTES;
static bool show_active_only = false;
enum tbl_flow_col {
TBL_FLOW_PROCESS,
TBL_FLOW_PID,
TBL_FLOW_PROTO,
TBL_FLOW_STATE,
TBL_FLOW_TIME,
TBL_FLOW_ADDRESS,
TBL_FLOW_PORT,
TBL_FLOW_GEO,
TBL_FLOW_BYTES,
TBL_FLOW_RATE,
};
enum tbl_proc_col {
TBL_PROC_NAME,
TBL_PROC_PID,
TBL_PROC_FLOWS,
TBL_PROC_BYTES_SRC,
TBL_PROC_RATE_SRC,
TBL_PROC_BYTES_DST,
TBL_PROC_RATE_DST,
};
static struct ui_table flows_tbl;
static struct ui_table procs_tbl;
static struct ui_table *curr_tbl;
enum tab_entry {
TAB_FLOWS,
TAB_PROCS,
};
#define list_first_or_next(__ptr, __head, __entry) \
({ \
struct cds_list_head *h; \
if (!__ptr) \
h = rcu_dereference((__head)->next); \
else if (rcu_dereference(__ptr->__entry.next) == (__head)) \
return NULL; \
else \
h = rcu_dereference(__ptr->__entry.next); \
cds_list_entry(h, __typeof(* (__ptr)), __entry); \
})
static const char *short_options = "vhTUsDIS46ut:nGb";
static const struct option long_options[] = {
{"ipv4", no_argument, NULL, '4'},
{"ipv6", no_argument, NULL, '6'},
{"tcp", no_argument, NULL, 'T'},
{"udp", no_argument, NULL, 'U'},
{"dccp", no_argument, NULL, 'D'},
{"icmp", no_argument, NULL, 'I'},
{"sctp", no_argument, NULL, 'S'},
{"no-dns", no_argument, NULL, 'n'},
{"no-geoip", no_argument, NULL, 'G'},
{"show-src", no_argument, NULL, 's'},
{"bits", no_argument, NULL, 'b'},
{"update", no_argument, NULL, 'u'},
{"interval", required_argument, NULL, 't'},
{"version", no_argument, NULL, 'v'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
static const char *copyright = "Please report bugs to <[email protected]>\n"
"Copyright (C) 2011-2013 Daniel Borkmann <[email protected]>\n"
"Copyright (C) 2011-2012 Emmanuel Roullit <[email protected]>\n"
"Swiss federal institute of technology (ETH Zurich)\n"
"License: GNU GPL version 2.0\n"
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.";
static const char *const l4proto2str[IPPROTO_MAX] = {
[IPPROTO_TCP] = "tcp",
[IPPROTO_UDP] = "udp",
[IPPROTO_UDPLITE] = "udplite",
[IPPROTO_ICMP] = "icmp",
[IPPROTO_ICMPV6] = "icmpv6",
[IPPROTO_SCTP] = "sctp",
[IPPROTO_GRE] = "gre",
[IPPROTO_DCCP] = "dccp",
[IPPROTO_IGMP] = "igmp",
[IPPROTO_IPIP] = "ipip",
[IPPROTO_EGP] = "egp",
[IPPROTO_PUP] = "pup",
[IPPROTO_IDP] = "idp",
[IPPROTO_RSVP] = "rsvp",
[IPPROTO_IPV6] = "ip6tun",
[IPPROTO_ESP] = "esp",
[IPPROTO_AH] = "ah",
[IPPROTO_PIM] = "pim",
[IPPROTO_COMP] = "comp",
};
static const char *const tcp_state2str[TCP_CONNTRACK_MAX] = {
[TCP_CONNTRACK_NONE] = "NONE",
[TCP_CONNTRACK_SYN_SENT] = "SYN-SENT",
[TCP_CONNTRACK_SYN_RECV] = "SYN-RECV",
[TCP_CONNTRACK_ESTABLISHED] = "ESTABLISHED",
[TCP_CONNTRACK_FIN_WAIT] = "FIN-WAIT",
[TCP_CONNTRACK_CLOSE_WAIT] = "CLOSE-WAIT",
[TCP_CONNTRACK_LAST_ACK] = "LAST-ACK",
[TCP_CONNTRACK_TIME_WAIT] = "TIME-WAIT",
[TCP_CONNTRACK_CLOSE] = "CLOSE",
[TCP_CONNTRACK_SYN_SENT2] = "SYN-SENT2",
};
static const char *const dccp_state2str[DCCP_CONNTRACK_MAX] = {
[DCCP_CONNTRACK_NONE] = "NONE",
[DCCP_CONNTRACK_REQUEST] = "REQUEST",
[DCCP_CONNTRACK_RESPOND] = "RESPOND",
[DCCP_CONNTRACK_PARTOPEN] = "PARTOPEN",
[DCCP_CONNTRACK_OPEN] = "OPEN",
[DCCP_CONNTRACK_CLOSEREQ] = "CLOSE-REQ",
[DCCP_CONNTRACK_CLOSING] = "CLOSING",
[DCCP_CONNTRACK_TIMEWAIT] = "TIME-WAIT",
[DCCP_CONNTRACK_IGNORE] = "IGNORE",
[DCCP_CONNTRACK_INVALID] = "INVALID",
};
static const char *const sctp_state2str[SCTP_CONNTRACK_MAX] = {
[SCTP_CONNTRACK_NONE] = "NONE",
[SCTP_CONNTRACK_CLOSED] = "CLOSED",
[SCTP_CONNTRACK_COOKIE_WAIT] = "COOKIE-WAIT",
[SCTP_CONNTRACK_COOKIE_ECHOED] = "COOKIE-ECHO",
[SCTP_CONNTRACK_ESTABLISHED] = "ESTABLISHED",
[SCTP_CONNTRACK_SHUTDOWN_SENT] = "SHUTD-SENT",
[SCTP_CONNTRACK_SHUTDOWN_RECD] = "SHUTD-RCVD",
[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = "SHUTD-ACK",
};
static const struct nfct_filter_ipv4 filter_ipv4 = {
.addr = __constant_htonl(INADDR_LOOPBACK),
.mask = 0xffffffff,
};
static const struct nfct_filter_ipv6 filter_ipv6 = {
.addr = { 0x0, 0x0, 0x0, 0x1 },
.mask = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff },
};
static int64_t time_after_us(struct timeval *tv)
{
struct timeval now;
bug_on(gettimeofday(&now, NULL));
now.tv_sec -= tv->tv_sec;
now.tv_usec -= tv->tv_usec;
return now.tv_sec * USEC_PER_SEC + now.tv_usec;
}
static void signal_handler(int number)
{
switch (number) {
case SIGINT:
case SIGQUIT:
case SIGTERM:
sigint = 1;
break;
case SIGHUP:
default:
break;
}
}
static void flow_entry_from_ct(struct flow_entry *n, const struct nf_conntrack *ct);
static void flow_entry_get_extended(struct flow_entry *n);
static void help(void)
{
printf("flowtop %s, top-like netfilter TCP/UDP/SCTP/.. flow tracking\n",
VERSION_STRING);
puts("http://www.netsniff-ng.org\n\n"
"Usage: flowtop [options]\n"
"Options:\n"
" -4|--ipv4 Show only IPv4 flows (default)\n"
" -6|--ipv6 Show only IPv6 flows (default)\n"
" -T|--tcp Show only TCP flows (default)\n"
" -U|--udp Show only UDP flows\n"
" -D|--dccp Show only DCCP flows\n"
" -I|--icmp Show only ICMP/ICMPv6 flows\n"
" -S|--sctp Show only SCTP flows\n"
" -n|--no-dns Don't perform hostname lookup\n"
" -G|--no-geoip Don't perform GeoIP lookup\n"
" -s|--show-src Also show source, not only dest\n"
" -b|--bits Show rates in bits/s instead of bytes/s\n"
" -u|--update Update GeoIP databases\n"
" -t|--interval <time> Refresh time in seconds (default 1s)\n"
" -v|--version Print version and exit\n"
" -h|--help Print this help and exit\n\n"
"Examples:\n"
" flowtop\n"
" flowtop -46UTDISs\n\n"
"Note:\n"
" If netfilter is not running, you can activate it with e.g.:\n"
" iptables -A INPUT -p tcp -m state --state ESTABLISHED -j ACCEPT\n"
" iptables -A OUTPUT -p tcp -m state --state NEW,ESTABLISHED -j ACCEPT\n");
puts(copyright);
die();
}
static void version(void)
{
printf("flowtop %s, Git id: %s\n", VERSION_LONG, GITVERSION);
puts("top-like netfilter TCP/UDP/SCTP/.. flow tracking\n"
"http://www.netsniff-ng.org\n");
puts(copyright);
die();
}
static void flow_entry_update_time(struct flow_entry *n)
{
bug_on(gettimeofday(&n->last_update, NULL));
}
#define CALC_RATE(fld) do { \
n->stat.rate_##fld = (((fld) > n->stat.fld) ? \
(((fld) - n->stat.fld) / sec) : 0); \
} while (0)
static void flow_entry_calc_rate(struct flow_entry *n, const struct nf_conntrack *ct)
{
uint64_t bytes_src = nfct_get_attr_u64(ct, ATTR_ORIG_COUNTER_BYTES);
uint64_t bytes_dst = nfct_get_attr_u64(ct, ATTR_REPL_COUNTER_BYTES);
uint64_t pkts_src = nfct_get_attr_u64(ct, ATTR_ORIG_COUNTER_PACKETS);
uint64_t pkts_dst = nfct_get_attr_u64(ct, ATTR_REPL_COUNTER_PACKETS);
double sec = (double)time_after_us(&n->last_update) / USEC_PER_SEC;
if (sec < 1)
return;
CALC_RATE(bytes_src);
CALC_RATE(bytes_dst);
CALC_RATE(pkts_src);
CALC_RATE(pkts_dst);
}
static inline struct flow_entry *flow_entry_xalloc(void)
{
return xzmalloc(sizeof(struct flow_entry));
}
static inline void flow_entry_xfree(struct flow_entry *n)
{
if (n->ct)
nfct_destroy(n->ct);
xfree(n);
}
static void flow_entry_xfree_rcu(struct rcu_head *head)
{
struct flow_entry *n = container_of(head, struct flow_entry, rcu);
flow_entry_xfree(n);
}
static inline void flow_list_init(struct flow_list *fl)
{
CDS_INIT_LIST_HEAD(&fl->head);
}
static inline bool nfct_is_dns(const struct nf_conntrack *ct)
{
uint16_t port_src = nfct_get_attr_u16(ct, ATTR_ORIG_PORT_SRC);
uint16_t port_dst = nfct_get_attr_u16(ct, ATTR_ORIG_PORT_DST);
return ntohs(port_src) == 53 || ntohs(port_dst) == 53;
}
static int flow_list_new_entry(struct flow_list *fl, struct nf_conntrack *ct)
{
struct flow_entry *n;
/* We don't want to analyze / display DNS itself, since we
* use it to resolve reverse dns.
*/
if (nfct_is_dns(ct))
return NFCT_CB_CONTINUE;
n = flow_entry_xalloc();
n->ct = ct;
flow_entry_update_time(n);
flow_entry_from_ct(n, ct);
flow_entry_get_extended(n);
cds_list_add_rcu(&n->entry, &fl->head);
n->is_visible = true;
return NFCT_CB_STOLEN;
}
static struct flow_entry *flow_list_find_id(struct flow_list *fl, uint32_t id)
{
struct flow_entry *n;
cds_list_for_each_entry_rcu(n, &fl->head, entry) {
if (n->flow_id == id)
return n;
}
return NULL;
}
static int flow_list_del_entry(struct flow_list *fl, const struct nf_conntrack *ct)
{
struct flow_entry *n;
n = flow_list_find_id(fl, nfct_get_attr_u32(ct, ATTR_ID));
if (n) {
if (n->proc) {
cds_list_del(&n->proc_head);
n->proc->flows_count--;
}
cds_list_del_rcu(&n->entry);
call_rcu(&n->rcu, flow_entry_xfree_rcu);
}
return NFCT_CB_CONTINUE;
}
static void flow_list_destroy(struct flow_list *fl)
{
struct flow_entry *n, *tmp;
cds_list_for_each_entry_safe(n, tmp, &fl->head, entry) {
cds_list_del_rcu(&n->entry);
call_rcu(&n->rcu, flow_entry_xfree_rcu);
}
}
static void proc_list_init(struct proc_list *proc_list)
{
CDS_INIT_LIST_HEAD(&proc_list->head);
}
static struct proc_entry *proc_list_new_entry(unsigned int pid)
{
struct proc_entry *proc;
cds_list_for_each_entry(proc, &proc_list.head, entry) {
if (proc->pid && proc->pid == pid)
return proc;
}
proc = xzmalloc(sizeof(*proc));
bug_on(gettimeofday(&proc->last_update, NULL));
CDS_INIT_LIST_HEAD(&proc->flows);
proc->pid = pid;
cds_list_add_tail(&proc->entry, &proc_list.head);
return proc;
}
static void proc_entry_xfree_rcu(struct rcu_head *head)
{
struct proc_entry *p = container_of(head, struct proc_entry, rcu);
xfree(p);
}
static void proc_list_destroy(struct proc_list *pl)
{
struct proc_entry *p, *tmp;
cds_list_for_each_entry_safe(p, tmp, &pl->head, entry) {
cds_list_del_rcu(&p->entry);
call_rcu(&p->rcu, proc_entry_xfree_rcu);
}
}
static void flow_entry_find_process(struct flow_entry *n)
{
struct proc_entry *p;
char cmdline[512];
pid_t pid;
int ret;
ret = proc_find_by_inode(n->inode, cmdline, sizeof(cmdline), &pid);
if (ret <= 0)
return;
p = proc_list_new_entry(pid);
if (snprintf(p->name, sizeof(p->name), "%s", basename(cmdline)) < 0)
p->name[0] = '\0';
p->stat.pkts_src += n->stat.pkts_src;
p->stat.pkts_dst += n->stat.pkts_dst;
p->stat.bytes_src += n->stat.bytes_src;
p->stat.bytes_dst += n->stat.bytes_dst;
p->flows_count++;
cds_list_add(&n->proc_head, &p->flows);
n->proc = p;
}
static int get_port_inode(uint16_t port, int proto, bool is_ip6)
{
int ret = -ENOENT;
char path[128], buff[1024];
FILE *proc;
memset(path, 0, sizeof(path));
snprintf(path, sizeof(path), "/proc/net/%s%s",
l4proto2str[proto], is_ip6 ? "6" : "");
proc = fopen(path, "r");
if (!proc)
return -EIO;
memset(buff, 0, sizeof(buff));
while (fgets(buff, sizeof(buff), proc) != NULL) {
int inode = 0;
unsigned int lport = 0;
buff[sizeof(buff) - 1] = 0;
if (sscanf(buff, "%*u: %*X:%X %*X:%*X %*X %*X:%*X %*X:%*X "
"%*X %*u %*u %u", &lport, &inode) == 2) {
if ((uint16_t) lport == port) {
ret = inode;
break;
}
}
memset(buff, 0, sizeof(buff));
}
fclose(proc);
return ret;
}
#define CP_NFCT(elem, attr, x) \
do { n->elem = nfct_get_attr_u##x(ct,(attr)); } while (0)
#define CP_NFCT_BUFF(elem, attr) do { \
const uint8_t *buff = nfct_get_attr(ct,(attr)); \
if (buff != NULL) \
memcpy(n->elem, buff, sizeof(n->elem)); \
} while (0)
static void flow_entry_from_ct(struct flow_entry *n, const struct nf_conntrack *ct)
{
uint64_t bytes_src = nfct_get_attr_u64(ct, ATTR_ORIG_COUNTER_BYTES);
uint64_t bytes_dst = nfct_get_attr_u64(ct, ATTR_REPL_COUNTER_BYTES);
uint64_t pkts_src = nfct_get_attr_u64(ct, ATTR_ORIG_COUNTER_PACKETS);
uint64_t pkts_dst = nfct_get_attr_u64(ct, ATTR_REPL_COUNTER_PACKETS);
/* Update stats diff to the related process entry */
if (n->proc) {
n->proc->stat.pkts_src += pkts_src - n->stat.pkts_src;
n->proc->stat.pkts_dst += pkts_dst - n->stat.pkts_dst;
n->proc->stat.bytes_src += bytes_src - n->stat.bytes_src;
n->proc->stat.bytes_dst += bytes_dst - n->stat.bytes_dst;
}
CP_NFCT(l3_proto, ATTR_ORIG_L3PROTO, 8);
CP_NFCT(l4_proto, ATTR_ORIG_L4PROTO, 8);
CP_NFCT(ip4_src_addr, ATTR_ORIG_IPV4_SRC, 32);
CP_NFCT(ip4_dst_addr, ATTR_ORIG_IPV4_DST, 32);
CP_NFCT(port_src, ATTR_ORIG_PORT_SRC, 16);
CP_NFCT(port_dst, ATTR_ORIG_PORT_DST, 16);
CP_NFCT(status, ATTR_STATUS, 32);
CP_NFCT(tcp_state, ATTR_TCP_STATE, 8);
CP_NFCT(tcp_flags, ATTR_TCP_FLAGS_ORIG, 8);
CP_NFCT(sctp_state, ATTR_SCTP_STATE, 8);
CP_NFCT(dccp_state, ATTR_DCCP_STATE, 8);
CP_NFCT(stat.pkts_src, ATTR_ORIG_COUNTER_PACKETS, 64);
CP_NFCT(stat.bytes_src, ATTR_ORIG_COUNTER_BYTES, 64);
CP_NFCT(stat.pkts_dst, ATTR_REPL_COUNTER_PACKETS, 64);
CP_NFCT(stat.bytes_dst, ATTR_REPL_COUNTER_BYTES, 64);
CP_NFCT(timestamp_start, ATTR_TIMESTAMP_START, 64);
CP_NFCT(timestamp_stop, ATTR_TIMESTAMP_STOP, 64);
CP_NFCT(flow_id, ATTR_ID, 32);
CP_NFCT(use, ATTR_USE, 32);
CP_NFCT_BUFF(ip6_src_addr, ATTR_ORIG_IPV6_SRC);
CP_NFCT_BUFF(ip6_dst_addr, ATTR_ORIG_IPV6_DST);
n->port_src = ntohs(n->port_src);
n->port_dst = ntohs(n->port_dst);
n->ip4_src_addr = ntohl(n->ip4_src_addr);
n->ip4_dst_addr = ntohl(n->ip4_dst_addr);
}
#define SELFLD(dir,src_member,dst_member) \
(((dir) == FLOW_DIR_SRC) ? n->src_member : n->dst_member)
static void flow_entry_get_sain4_obj(const struct flow_entry *n,
enum flow_direction dir,
struct sockaddr_in *sa)
{
memset(sa, 0, sizeof(*sa));
sa->sin_family = PF_INET;
sa->sin_addr.s_addr = htonl(SELFLD(dir, ip4_src_addr, ip4_dst_addr));
}
static void flow_entry_get_sain6_obj(const struct flow_entry *n,
enum flow_direction dir,
struct sockaddr_in6 *sa)
{
memset(sa, 0, sizeof(*sa));
sa->sin6_family = PF_INET6;
memcpy(&sa->sin6_addr, SELFLD(dir, ip6_src_addr, ip6_dst_addr),
sizeof(sa->sin6_addr));
}
static void
flow_entry_geo_city_lookup_generic(struct flow_entry *n,
enum flow_direction dir)
{
struct sockaddr_in sa4;
struct sockaddr_in6 sa6;
char *city = NULL;
switch (n->l3_proto) {
default:
bug();
case AF_INET:
flow_entry_get_sain4_obj(n, dir, &sa4);
city = geoip4_city_name(&sa4);
break;
case AF_INET6:
flow_entry_get_sain6_obj(n, dir, &sa6);
city = geoip6_city_name(&sa6);
break;
}
build_bug_on(sizeof(n->city_src) != sizeof(n->city_dst));
if (city)
strlcpy(SELFLD(dir, city_src, city_dst), city,
sizeof(n->city_src));
else
SELFLD(dir, city_src, city_dst)[0] = '\0';
free(city);
}
static void
flow_entry_geo_country_lookup_generic(struct flow_entry *n,
enum flow_direction dir)
{
struct sockaddr_in sa4;
struct sockaddr_in6 sa6;
const char *country = NULL;
const char *country_code = NULL;
switch (n->l3_proto) {
default:
bug();
case AF_INET:
flow_entry_get_sain4_obj(n, dir, &sa4);
country = geoip4_country_name(&sa4);
country_code = geoip4_country_code3_name(&sa4);
break;
case AF_INET6:
flow_entry_get_sain6_obj(n, dir, &sa6);
country = geoip6_country_name(&sa6);
country_code = geoip6_country_code3_name(&sa6);
break;
}
build_bug_on(sizeof(n->country_src) != sizeof(n->country_dst));
if (country)
strlcpy(SELFLD(dir, country_src, country_dst), country,
sizeof(n->country_src));
else
SELFLD(dir, country_src, country_dst)[0] = '\0';
build_bug_on(sizeof(n->country_code_src) != sizeof(n->country_code_dst));
if (country_code)
strlcpy(SELFLD(dir, country_code_src, country_code_dst),
country_code, sizeof(n->country_code_src));
else
SELFLD(dir, country_code_src, country_code_dst)[0] = '\0';
}
static void flow_entry_get_extended_geo(struct flow_entry *n,
enum flow_direction dir)
{
if (resolve_geoip) {
flow_entry_geo_city_lookup_generic(n, dir);
flow_entry_geo_country_lookup_generic(n, dir);
}
}
static void flow_entry_get_extended_revdns(struct flow_entry *n,
enum flow_direction dir)
{
size_t sa_len;
struct sockaddr_in sa4;
struct sockaddr_in6 sa6;
struct sockaddr *sa;
struct hostent *hent;
build_bug_on(sizeof(n->rev_dns_src) != sizeof(n->rev_dns_dst));
switch (n->l3_proto) {
default:
bug();
case AF_INET:
flow_entry_get_sain4_obj(n, dir, &sa4);
if (!resolve_dns) {
inet_ntop(AF_INET, &sa4.sin_addr,
SELFLD(dir, rev_dns_src, rev_dns_dst),
sizeof(n->rev_dns_src));
return;
}
sa = (struct sockaddr *) &sa4;
sa_len = sizeof(sa4);
hent = gethostbyaddr(&sa4.sin_addr, sizeof(sa4.sin_addr), AF_INET);
break;
case AF_INET6:
flow_entry_get_sain6_obj(n, dir, &sa6);
if (!resolve_dns) {
inet_ntop(AF_INET6, &sa6.sin6_addr,
SELFLD(dir, rev_dns_src, rev_dns_dst),
sizeof(n->rev_dns_src));
return;
}
sa = (struct sockaddr *) &sa6;
sa_len = sizeof(sa6);
hent = gethostbyaddr(&sa6.sin6_addr, sizeof(sa6.sin6_addr), AF_INET6);
break;
}
getnameinfo(sa, sa_len, SELFLD(dir, rev_dns_src, rev_dns_dst),
sizeof(n->rev_dns_src), NULL, 0, NI_NUMERICHOST);
if (hent)
strlcpy(SELFLD(dir, rev_dns_src, rev_dns_dst), hent->h_name,
sizeof(n->rev_dns_src));
}
static void flow_entry_get_extended(struct flow_entry *n)
{
if (n->flow_id == 0)
return;
flow_entry_get_extended_revdns(n, FLOW_DIR_SRC);
flow_entry_get_extended_geo(n, FLOW_DIR_SRC);
flow_entry_get_extended_revdns(n, FLOW_DIR_DST);
flow_entry_get_extended_geo(n, FLOW_DIR_DST);
/* Lookup application */
n->inode = get_port_inode(n->port_src, n->l4_proto,
n->l3_proto == AF_INET6);
if (n->inode > 0)
flow_entry_find_process(n);
}
static char *bandw2str(double bytes, char *buf, size_t len)
{
if (bytes <= 0) {
buf[0] = '\0';
return buf;
}
if (bytes > 1000000000.)
snprintf(buf, len, "%.1fGB", bytes / 1000000000.);
else if (bytes > 1000000.)
snprintf(buf, len, "%.1fMB", bytes / 1000000.);
else if (bytes > 1000.)
snprintf(buf, len, "%.1fkB", bytes / 1000.);
else
snprintf(buf, len, "%.0f", bytes);
return buf;
}
static char *rate2str(double rate, char *buf, size_t len)
{
const char * const unit_fmt[2][4] = {
{ "%.1fGbit/s", "%.1fMbit/s", "%.1fkbit/s", "%.0fbit/s" },
{ "%.1fGB/s", "%.1fMB/s", "%.1fkB/s", "%.0fB/s" }
};
if (rate <= 0) {
buf[0] = '\0';
return buf;
}
if (rate_type == RATE_BITS)
rate *= 8;
if (rate > 1000000000.)
snprintf(buf, len, unit_fmt[rate_type][0], rate / 1000000000.);
else if (rate > 1000000.)
snprintf(buf, len, unit_fmt[rate_type][1], rate / 1000000.);
else if (rate > 1000.)
snprintf(buf, len, unit_fmt[rate_type][2], rate / 1000.);
else
snprintf(buf, len, unit_fmt[rate_type][3], rate);
return buf;
}
static char *time2str(uint64_t tstamp, char *str, size_t len)
{
time_t now;
int v, s;
time(&now);
s = now - (tstamp ? (tstamp / NSEC_PER_SEC) : now);
if (s <= 0) {
str[0] = '\0';
return str;
}
v = s / (3600 * 24);
if (v > 0) {
slprintf(str, len, "%dd", v);
return str;
}
v = s / 3600;
if (v > 0) {
slprintf(str, len, "%dh", v);
return str;
}
v = s / 60;
if (v > 0) {
slprintf(str, len, "%dm", v);
return str;
}
slprintf(str, len, "%ds", s);
return str;
}
static const char *flow_state2str(const struct flow_entry *n)
{
switch (n->l4_proto) {
case IPPROTO_TCP:
return tcp_state2str[n->tcp_state];
case IPPROTO_SCTP:
return sctp_state2str[n->sctp_state];
case IPPROTO_DCCP:
return dccp_state2str[n->dccp_state];
case IPPROTO_UDP:
case IPPROTO_UDPLITE:
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
default:
return "";
}
}
static char *flow_port2str(const struct flow_entry *n, char *str, size_t len,
enum flow_direction dir)
{
const char *tmp = NULL;
uint16_t port = 0;
port = SELFLD(dir, port_src, port_dst);
tmp = NULL;
switch (n->l4_proto) {
case IPPROTO_TCP:
tmp = lookup_port_tcp(port);
break;
case IPPROTO_UDP:
case IPPROTO_UDPLITE:
tmp = lookup_port_udp(port);
break;
}
if (!tmp && port)
slprintf(str, len, "%d", port);
else
slprintf(str, len, "%s", tmp ? tmp : "");
return str;
}
static void print_flow_peer_info(const struct flow_entry *n, enum flow_direction dir)
{
int counters_color = COLOR(YELLOW, BLACK);
int src_color = COLOR(RED, BLACK);
int dst_color = COLOR(BLUE, BLACK);
int country_color = COLOR(GREEN, BLACK);
int addr_color = dst_color;
int port_color = A_BOLD;
char tmp[128];
if (show_src && dir == FLOW_DIR_SRC) {
country_color = src_color;
counters_color = src_color;
port_color |= src_color;
addr_color = src_color;
} else if (show_src && FLOW_DIR_DST) {
country_color = dst_color;
counters_color = dst_color;
port_color |= dst_color;
addr_color = dst_color;
}
ui_table_col_color_set(&flows_tbl, TBL_FLOW_ADDRESS, addr_color);
ui_table_col_color_set(&flows_tbl, TBL_FLOW_PORT, port_color);
ui_table_col_color_set(&flows_tbl, TBL_FLOW_GEO, country_color);
ui_table_col_color_set(&flows_tbl, TBL_FLOW_BYTES, counters_color);