| /* |
| * ss.c "sockstat", socket statistics |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <sys/uio.h> |
| #include <netinet/in.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <netdb.h> |
| #include <arpa/inet.h> |
| #include <dirent.h> |
| #include <fnmatch.h> |
| #include <getopt.h> |
| |
| #include "utils.h" |
| #include "rt_names.h" |
| #include "ll_map.h" |
| #include "libnetlink.h" |
| #include "SNAPSHOT.h" |
| |
| #include <linux/tcp.h> |
| #include <linux/sock_diag.h> |
| #include <linux/inet_diag.h> |
| #include <linux/unix_diag.h> |
| #include <linux/netdevice.h> /* for MAX_ADDR_LEN */ |
| #include <linux/filter.h> |
| #include <linux/packet_diag.h> |
| #include <linux/netlink_diag.h> |
| |
| int resolve_hosts = 0; |
| int resolve_services = 1; |
| int preferred_family = AF_UNSPEC; |
| int show_options = 0; |
| int show_details = 0; |
| int show_users = 0; |
| int show_mem = 0; |
| int show_tcpinfo = 0; |
| int show_bpf = 0; |
| |
| int netid_width; |
| int state_width; |
| int addrp_width; |
| int addr_width; |
| int serv_width; |
| int screen_width; |
| |
| static const char *TCP_PROTO = "tcp"; |
| static const char *UDP_PROTO = "udp"; |
| static const char *RAW_PROTO = "raw"; |
| static const char *dg_proto = NULL; |
| |
| enum |
| { |
| TCP_DB, |
| DCCP_DB, |
| UDP_DB, |
| RAW_DB, |
| UNIX_DG_DB, |
| UNIX_ST_DB, |
| PACKET_DG_DB, |
| PACKET_R_DB, |
| NETLINK_DB, |
| MAX_DB |
| }; |
| |
| #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB)) |
| #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)) |
| #define ALL_DB ((1<<MAX_DB)-1) |
| |
| enum { |
| SS_UNKNOWN, |
| SS_ESTABLISHED, |
| SS_SYN_SENT, |
| SS_SYN_RECV, |
| SS_FIN_WAIT1, |
| SS_FIN_WAIT2, |
| SS_TIME_WAIT, |
| SS_CLOSE, |
| SS_CLOSE_WAIT, |
| SS_LAST_ACK, |
| SS_LISTEN, |
| SS_CLOSING, |
| SS_MAX |
| }; |
| |
| #define SS_ALL ((1<<SS_MAX)-1) |
| |
| #include "ssfilter.h" |
| |
| struct filter |
| { |
| int dbs; |
| int states; |
| int families; |
| struct ssfilter *f; |
| }; |
| |
| struct filter default_filter = { |
| .dbs = ~0, |
| .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)), |
| .families= (1<<AF_INET)|(1<<AF_INET6), |
| }; |
| |
| struct filter current_filter; |
| |
| static FILE *generic_proc_open(const char *env, const char *name) |
| { |
| const char *p = getenv(env); |
| char store[128]; |
| |
| if (!p) { |
| p = getenv("PROC_ROOT") ? : "/proc"; |
| snprintf(store, sizeof(store)-1, "%s/%s", p, name); |
| p = store; |
| } |
| |
| return fopen(p, "r"); |
| } |
| |
| static FILE *net_tcp_open(void) |
| { |
| return generic_proc_open("PROC_NET_TCP", "net/tcp"); |
| } |
| |
| static FILE *net_tcp6_open(void) |
| { |
| return generic_proc_open("PROC_NET_TCP6", "net/tcp6"); |
| } |
| |
| static FILE *net_udp_open(void) |
| { |
| return generic_proc_open("PROC_NET_UDP", "net/udp"); |
| } |
| |
| static FILE *net_udp6_open(void) |
| { |
| return generic_proc_open("PROC_NET_UDP6", "net/udp6"); |
| } |
| |
| static FILE *net_raw_open(void) |
| { |
| return generic_proc_open("PROC_NET_RAW", "net/raw"); |
| } |
| |
| static FILE *net_raw6_open(void) |
| { |
| return generic_proc_open("PROC_NET_RAW6", "net/raw6"); |
| } |
| |
| static FILE *net_unix_open(void) |
| { |
| return generic_proc_open("PROC_NET_UNIX", "net/unix"); |
| } |
| |
| static FILE *net_packet_open(void) |
| { |
| return generic_proc_open("PROC_NET_PACKET", "net/packet"); |
| } |
| |
| static FILE *net_netlink_open(void) |
| { |
| return generic_proc_open("PROC_NET_NETLINK", "net/netlink"); |
| } |
| |
| static FILE *slabinfo_open(void) |
| { |
| return generic_proc_open("PROC_SLABINFO", "slabinfo"); |
| } |
| |
| static FILE *net_sockstat_open(void) |
| { |
| return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat"); |
| } |
| |
| static FILE *net_sockstat6_open(void) |
| { |
| return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6"); |
| } |
| |
| static FILE *net_snmp_open(void) |
| { |
| return generic_proc_open("PROC_NET_SNMP", "net/snmp"); |
| } |
| |
| static FILE *ephemeral_ports_open(void) |
| { |
| return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range"); |
| } |
| |
| struct user_ent { |
| struct user_ent *next; |
| unsigned int ino; |
| int pid; |
| int fd; |
| char process[0]; |
| }; |
| |
| #define USER_ENT_HASH_SIZE 256 |
| struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE]; |
| |
| static int user_ent_hashfn(unsigned int ino) |
| { |
| int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino; |
| |
| return val & (USER_ENT_HASH_SIZE - 1); |
| } |
| |
| static void user_ent_add(unsigned int ino, const char *process, int pid, int fd) |
| { |
| struct user_ent *p, **pp; |
| int str_len; |
| |
| str_len = strlen(process) + 1; |
| p = malloc(sizeof(struct user_ent) + str_len); |
| if (!p) |
| abort(); |
| p->next = NULL; |
| p->ino = ino; |
| p->pid = pid; |
| p->fd = fd; |
| strcpy(p->process, process); |
| |
| pp = &user_ent_hash[user_ent_hashfn(ino)]; |
| p->next = *pp; |
| *pp = p; |
| } |
| |
| static void user_ent_hash_build(void) |
| { |
| const char *root = getenv("PROC_ROOT") ? : "/proc/"; |
| struct dirent *d; |
| char name[1024]; |
| int nameoff; |
| DIR *dir; |
| |
| strcpy(name, root); |
| if (strlen(name) == 0 || name[strlen(name)-1] != '/') |
| strcat(name, "/"); |
| |
| nameoff = strlen(name); |
| |
| dir = opendir(name); |
| if (!dir) |
| return; |
| |
| while ((d = readdir(dir)) != NULL) { |
| struct dirent *d1; |
| char process[16]; |
| int pid, pos; |
| DIR *dir1; |
| char crap; |
| |
| if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1) |
| continue; |
| |
| sprintf(name + nameoff, "%d/fd/", pid); |
| pos = strlen(name); |
| if ((dir1 = opendir(name)) == NULL) |
| continue; |
| |
| process[0] = '\0'; |
| |
| while ((d1 = readdir(dir1)) != NULL) { |
| const char *pattern = "socket:["; |
| unsigned int ino; |
| char lnk[64]; |
| int fd; |
| ssize_t link_len; |
| |
| if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1) |
| continue; |
| |
| sprintf(name+pos, "%d", fd); |
| |
| link_len = readlink(name, lnk, sizeof(lnk)-1); |
| if (link_len == -1) |
| continue; |
| lnk[link_len] = '\0'; |
| |
| if (strncmp(lnk, pattern, strlen(pattern))) |
| continue; |
| |
| sscanf(lnk, "socket:[%u]", &ino); |
| |
| if (process[0] == '\0') { |
| char tmp[1024]; |
| FILE *fp; |
| |
| snprintf(tmp, sizeof(tmp), "%s/%d/stat", root, pid); |
| if ((fp = fopen(tmp, "r")) != NULL) { |
| fscanf(fp, "%*d (%[^)])", process); |
| fclose(fp); |
| } |
| } |
| |
| user_ent_add(ino, process, pid, fd); |
| } |
| closedir(dir1); |
| } |
| closedir(dir); |
| } |
| |
| static int find_users(unsigned ino, char *buf, int buflen) |
| { |
| struct user_ent *p; |
| int cnt = 0; |
| char *ptr; |
| |
| if (!ino) |
| return 0; |
| |
| p = user_ent_hash[user_ent_hashfn(ino)]; |
| ptr = buf; |
| while (p) { |
| if (p->ino != ino) |
| goto next; |
| |
| if (ptr - buf >= buflen - 1) |
| break; |
| |
| snprintf(ptr, buflen - (ptr - buf), |
| "(\"%s\",%d,%d),", |
| p->process, p->pid, p->fd); |
| ptr += strlen(ptr); |
| cnt++; |
| |
| next: |
| p = p->next; |
| } |
| |
| if (ptr != buf) |
| ptr[-1] = '\0'; |
| |
| return cnt; |
| } |
| |
| /* Get stats from slab */ |
| |
| struct slabstat |
| { |
| int socks; |
| int tcp_ports; |
| int tcp_tws; |
| int tcp_syns; |
| int skbs; |
| }; |
| |
| struct slabstat slabstat; |
| |
| static const char *slabstat_ids[] = |
| { |
| "sock", |
| "tcp_bind_bucket", |
| "tcp_tw_bucket", |
| "tcp_open_request", |
| "skbuff_head_cache", |
| }; |
| |
| static int get_slabstat(struct slabstat *s) |
| { |
| char buf[256]; |
| FILE *fp; |
| int cnt; |
| |
| memset(s, 0, sizeof(*s)); |
| |
| fp = slabinfo_open(); |
| if (!fp) |
| return -1; |
| |
| cnt = sizeof(*s)/sizeof(int); |
| |
| fgets(buf, sizeof(buf), fp); |
| while(fgets(buf, sizeof(buf), fp) != NULL) { |
| int i; |
| for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) { |
| if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) { |
| sscanf(buf, "%*s%d", ((int *)s) + i); |
| cnt--; |
| break; |
| } |
| } |
| if (cnt <= 0) |
| break; |
| } |
| |
| fclose(fp); |
| return 0; |
| } |
| |
| static const char *sstate_name[] = { |
| "UNKNOWN", |
| [SS_ESTABLISHED] = "ESTAB", |
| [SS_SYN_SENT] = "SYN-SENT", |
| [SS_SYN_RECV] = "SYN-RECV", |
| [SS_FIN_WAIT1] = "FIN-WAIT-1", |
| [SS_FIN_WAIT2] = "FIN-WAIT-2", |
| [SS_TIME_WAIT] = "TIME-WAIT", |
| [SS_CLOSE] = "UNCONN", |
| [SS_CLOSE_WAIT] = "CLOSE-WAIT", |
| [SS_LAST_ACK] = "LAST-ACK", |
| [SS_LISTEN] = "LISTEN", |
| [SS_CLOSING] = "CLOSING", |
| }; |
| |
| static const char *sstate_namel[] = { |
| "UNKNOWN", |
| [SS_ESTABLISHED] = "established", |
| [SS_SYN_SENT] = "syn-sent", |
| [SS_SYN_RECV] = "syn-recv", |
| [SS_FIN_WAIT1] = "fin-wait-1", |
| [SS_FIN_WAIT2] = "fin-wait-2", |
| [SS_TIME_WAIT] = "time-wait", |
| [SS_CLOSE] = "unconnected", |
| [SS_CLOSE_WAIT] = "close-wait", |
| [SS_LAST_ACK] = "last-ack", |
| [SS_LISTEN] = "listening", |
| [SS_CLOSING] = "closing", |
| }; |
| |
| struct tcpstat |
| { |
| inet_prefix local; |
| inet_prefix remote; |
| int lport; |
| int rport; |
| int state; |
| int rq, wq; |
| int timer; |
| int timeout; |
| int retrs; |
| unsigned ino; |
| int probes; |
| unsigned uid; |
| int refcnt; |
| unsigned long long sk; |
| int rto, ato, qack, cwnd, ssthresh; |
| }; |
| |
| static const char *tmr_name[] = { |
| "off", |
| "on", |
| "keepalive", |
| "timewait", |
| "persist", |
| "unknown" |
| }; |
| |
| static const char *print_ms_timer(int timeout) |
| { |
| static char buf[64]; |
| int secs, msecs, minutes; |
| if (timeout < 0) |
| timeout = 0; |
| secs = timeout/1000; |
| minutes = secs/60; |
| secs = secs%60; |
| msecs = timeout%1000; |
| buf[0] = 0; |
| if (minutes) { |
| msecs = 0; |
| snprintf(buf, sizeof(buf)-16, "%dmin", minutes); |
| if (minutes > 9) |
| secs = 0; |
| } |
| if (secs) { |
| if (secs > 9) |
| msecs = 0; |
| sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec"); |
| } |
| if (msecs) |
| sprintf(buf+strlen(buf), "%03dms", msecs); |
| return buf; |
| } |
| |
| static const char *print_hz_timer(int timeout) |
| { |
| int hz = get_user_hz(); |
| return print_ms_timer(((timeout*1000) + hz-1)/hz); |
| } |
| |
| struct scache |
| { |
| struct scache *next; |
| int port; |
| char *name; |
| const char *proto; |
| }; |
| |
| struct scache *rlist; |
| |
| static void init_service_resolver(void) |
| { |
| char buf[128]; |
| FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r"); |
| if (fp) { |
| fgets(buf, sizeof(buf), fp); |
| while (fgets(buf, sizeof(buf), fp) != NULL) { |
| unsigned int progn, port; |
| char proto[128], prog[128]; |
| if (sscanf(buf, "%u %*d %s %u %s", &progn, proto, |
| &port, prog+4) == 4) { |
| struct scache *c = malloc(sizeof(*c)); |
| if (c) { |
| c->port = port; |
| memcpy(prog, "rpc.", 4); |
| c->name = strdup(prog); |
| if (strcmp(proto, TCP_PROTO) == 0) |
| c->proto = TCP_PROTO; |
| else if (strcmp(proto, UDP_PROTO) == 0) |
| c->proto = UDP_PROTO; |
| else |
| c->proto = NULL; |
| c->next = rlist; |
| rlist = c; |
| } |
| } |
| } |
| pclose(fp); |
| } |
| } |
| |
| static int ip_local_port_min, ip_local_port_max; |
| |
| /* Even do not try default linux ephemeral port ranges: |
| * default /etc/services contains so much of useless crap |
| * wouldbe "allocated" to this area that resolution |
| * is really harmful. I shrug each time when seeing |
| * "socks" or "cfinger" in dumps. |
| */ |
| static int is_ephemeral(int port) |
| { |
| if (!ip_local_port_min) { |
| FILE *f = ephemeral_ports_open(); |
| if (f) { |
| fscanf(f, "%d %d", |
| &ip_local_port_min, &ip_local_port_max); |
| fclose(f); |
| } else { |
| ip_local_port_min = 1024; |
| ip_local_port_max = 4999; |
| } |
| } |
| |
| return (port >= ip_local_port_min && port<= ip_local_port_max); |
| } |
| |
| |
| static const char *__resolve_service(int port) |
| { |
| struct scache *c; |
| |
| for (c = rlist; c; c = c->next) { |
| if (c->port == port && c->proto == dg_proto) |
| return c->name; |
| } |
| |
| if (!is_ephemeral(port)) { |
| static int notfirst; |
| struct servent *se; |
| if (!notfirst) { |
| setservent(1); |
| notfirst = 1; |
| } |
| se = getservbyport(htons(port), dg_proto); |
| if (se) |
| return se->s_name; |
| } |
| |
| return NULL; |
| } |
| |
| |
| static const char *resolve_service(int port) |
| { |
| static char buf[128]; |
| static struct scache cache[256]; |
| |
| if (port == 0) { |
| buf[0] = '*'; |
| buf[1] = 0; |
| return buf; |
| } |
| |
| if (resolve_services) { |
| if (dg_proto == RAW_PROTO) { |
| return inet_proto_n2a(port, buf, sizeof(buf)); |
| } else { |
| struct scache *c; |
| const char *res; |
| int hash = (port^(((unsigned long)dg_proto)>>2))&255; |
| |
| for (c = &cache[hash]; c; c = c->next) { |
| if (c->port == port && |
| c->proto == dg_proto) { |
| if (c->name) |
| return c->name; |
| goto do_numeric; |
| } |
| } |
| |
| if ((res = __resolve_service(port)) != NULL) { |
| if ((c = malloc(sizeof(*c))) == NULL) |
| goto do_numeric; |
| } else { |
| c = &cache[hash]; |
| if (c->name) |
| free(c->name); |
| } |
| c->port = port; |
| c->name = NULL; |
| c->proto = dg_proto; |
| if (res) { |
| c->name = strdup(res); |
| c->next = cache[hash].next; |
| cache[hash].next = c; |
| } |
| if (c->name) |
| return c->name; |
| } |
| } |
| |
| do_numeric: |
| sprintf(buf, "%u", port); |
| return buf; |
| } |
| |
| static void formatted_print(const inet_prefix *a, int port) |
| { |
| char buf[1024]; |
| const char *ap = buf; |
| int est_len; |
| |
| est_len = addr_width; |
| |
| if (a->family == AF_INET) { |
| if (a->data[0] == 0) { |
| buf[0] = '*'; |
| buf[1] = 0; |
| } else { |
| ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf)); |
| } |
| } else { |
| ap = format_host(a->family, 16, a->data, buf, sizeof(buf)); |
| est_len = strlen(ap); |
| if (est_len <= addr_width) |
| est_len = addr_width; |
| else |
| est_len = addr_width + ((est_len-addr_width+3)/4)*4; |
| } |
| printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port)); |
| } |
| |
| struct aafilter |
| { |
| inet_prefix addr; |
| int port; |
| struct aafilter *next; |
| }; |
| |
| static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, |
| int plen) |
| { |
| if (!inet_addr_match(a, p, plen)) |
| return 0; |
| |
| /* Cursed "v4 mapped" addresses: v4 mapped socket matches |
| * pure IPv4 rule, but v4-mapped rule selects only v4-mapped |
| * sockets. Fair? */ |
| if (p->family == AF_INET && a->family == AF_INET6) { |
| if (a->data[0] == 0 && a->data[1] == 0 && |
| a->data[2] == htonl(0xffff)) { |
| inet_prefix tmp = *a; |
| tmp.data[0] = a->data[3]; |
| return inet_addr_match(&tmp, p, plen); |
| } |
| } |
| return 1; |
| } |
| |
| static int unix_match(const inet_prefix *a, const inet_prefix *p) |
| { |
| char *addr, *pattern; |
| memcpy(&addr, a->data, sizeof(addr)); |
| memcpy(&pattern, p->data, sizeof(pattern)); |
| if (pattern == NULL) |
| return 1; |
| if (addr == NULL) |
| addr = ""; |
| return !fnmatch(pattern, addr, 0); |
| } |
| |
| static int run_ssfilter(struct ssfilter *f, struct tcpstat *s) |
| { |
| switch (f->type) { |
| case SSF_S_AUTO: |
| { |
| static int low, high=65535; |
| |
| if (s->local.family == AF_UNIX) { |
| char *p; |
| memcpy(&p, s->local.data, sizeof(p)); |
| return p == NULL || (p[0] == '@' && strlen(p) == 6 && |
| strspn(p+1, "0123456789abcdef") == 5); |
| } |
| if (s->local.family == AF_PACKET) |
| return s->lport == 0 && s->local.data == 0; |
| if (s->local.family == AF_NETLINK) |
| return s->lport < 0; |
| |
| if (!low) { |
| FILE *fp = ephemeral_ports_open(); |
| if (fp) { |
| fscanf(fp, "%d%d", &low, &high); |
| fclose(fp); |
| } |
| } |
| return s->lport >= low && s->lport <= high; |
| } |
| case SSF_DCOND: |
| { |
| struct aafilter *a = (void*)f->pred; |
| if (a->addr.family == AF_UNIX) |
| return unix_match(&s->remote, &a->addr); |
| if (a->port != -1 && a->port != s->rport) |
| return 0; |
| if (a->addr.bitlen) { |
| do { |
| if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen)) |
| return 1; |
| } while ((a = a->next) != NULL); |
| return 0; |
| } |
| return 1; |
| } |
| case SSF_SCOND: |
| { |
| struct aafilter *a = (void*)f->pred; |
| if (a->addr.family == AF_UNIX) |
| return unix_match(&s->local, &a->addr); |
| if (a->port != -1 && a->port != s->lport) |
| return 0; |
| if (a->addr.bitlen) { |
| do { |
| if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen)) |
| return 1; |
| } while ((a = a->next) != NULL); |
| return 0; |
| } |
| return 1; |
| } |
| case SSF_D_GE: |
| { |
| struct aafilter *a = (void*)f->pred; |
| return s->rport >= a->port; |
| } |
| case SSF_D_LE: |
| { |
| struct aafilter *a = (void*)f->pred; |
| return s->rport <= a->port; |
| } |
| case SSF_S_GE: |
| { |
| struct aafilter *a = (void*)f->pred; |
| return s->lport >= a->port; |
| } |
| case SSF_S_LE: |
| { |
| struct aafilter *a = (void*)f->pred; |
| return s->lport <= a->port; |
| } |
| |
| /* Yup. It is recursion. Sorry. */ |
| case SSF_AND: |
| return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s); |
| case SSF_OR: |
| return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s); |
| case SSF_NOT: |
| return !run_ssfilter(f->pred, s); |
| default: |
| abort(); |
| } |
| } |
| |
| /* Relocate external jumps by reloc. */ |
| static void ssfilter_patch(char *a, int len, int reloc) |
| { |
| while (len > 0) { |
| struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a; |
| if (op->no == len+4) |
| op->no += reloc; |
| len -= op->yes; |
| a += op->yes; |
| } |
| if (len < 0) |
| abort(); |
| } |
| |
| static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode) |
| { |
| switch (f->type) { |
| case SSF_S_AUTO: |
| { |
| if (!(*bytecode=malloc(4))) abort(); |
| ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 }; |
| return 4; |
| } |
| case SSF_DCOND: |
| case SSF_SCOND: |
| { |
| struct aafilter *a = (void*)f->pred; |
| struct aafilter *b; |
| char *ptr; |
| int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND); |
| int len = 0; |
| |
| for (b=a; b; b=b->next) { |
| len += 4 + sizeof(struct inet_diag_hostcond); |
| if (a->addr.family == AF_INET6) |
| len += 16; |
| else |
| len += 4; |
| if (b->next) |
| len += 4; |
| } |
| if (!(ptr = malloc(len))) abort(); |
| *bytecode = ptr; |
| for (b=a; b; b=b->next) { |
| struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr; |
| int alen = (a->addr.family == AF_INET6 ? 16 : 4); |
| int oplen = alen + 4 + sizeof(struct inet_diag_hostcond); |
| struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4); |
| |
| *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 }; |
| cond->family = a->addr.family; |
| cond->port = a->port; |
| cond->prefix_len = a->addr.bitlen; |
| memcpy(cond->addr, a->addr.data, alen); |
| ptr += oplen; |
| if (b->next) { |
| op = (struct inet_diag_bc_op *)ptr; |
| *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)}; |
| ptr += 4; |
| } |
| } |
| return ptr - *bytecode; |
| } |
| case SSF_D_GE: |
| { |
| struct aafilter *x = (void*)f->pred; |
| if (!(*bytecode=malloc(8))) abort(); |
| ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 }; |
| ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; |
| return 8; |
| } |
| case SSF_D_LE: |
| { |
| struct aafilter *x = (void*)f->pred; |
| if (!(*bytecode=malloc(8))) abort(); |
| ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 }; |
| ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; |
| return 8; |
| } |
| case SSF_S_GE: |
| { |
| struct aafilter *x = (void*)f->pred; |
| if (!(*bytecode=malloc(8))) abort(); |
| ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 }; |
| ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; |
| return 8; |
| } |
| case SSF_S_LE: |
| { |
| struct aafilter *x = (void*)f->pred; |
| if (!(*bytecode=malloc(8))) abort(); |
| ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 }; |
| ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; |
| return 8; |
| } |
| |
| case SSF_AND: |
| { |
| char *a1, *a2, *a; |
| int l1, l2; |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| l2 = ssfilter_bytecompile(f->post, &a2); |
| if (!(a = malloc(l1+l2))) abort(); |
| memcpy(a, a1, l1); |
| memcpy(a+l1, a2, l2); |
| free(a1); free(a2); |
| ssfilter_patch(a, l1, l2); |
| *bytecode = a; |
| return l1+l2; |
| } |
| case SSF_OR: |
| { |
| char *a1, *a2, *a; |
| int l1, l2; |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| l2 = ssfilter_bytecompile(f->post, &a2); |
| if (!(a = malloc(l1+l2+4))) abort(); |
| memcpy(a, a1, l1); |
| memcpy(a+l1+4, a2, l2); |
| free(a1); free(a2); |
| *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 }; |
| *bytecode = a; |
| return l1+l2+4; |
| } |
| case SSF_NOT: |
| { |
| char *a1, *a; |
| int l1; |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| if (!(a = malloc(l1+4))) abort(); |
| memcpy(a, a1, l1); |
| free(a1); |
| *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 }; |
| *bytecode = a; |
| return l1+4; |
| } |
| default: |
| abort(); |
| } |
| } |
| |
| static int remember_he(struct aafilter *a, struct hostent *he) |
| { |
| char **ptr = he->h_addr_list; |
| int cnt = 0; |
| int len; |
| |
| if (he->h_addrtype == AF_INET) |
| len = 4; |
| else if (he->h_addrtype == AF_INET6) |
| len = 16; |
| else |
| return 0; |
| |
| while (*ptr) { |
| struct aafilter *b = a; |
| if (a->addr.bitlen) { |
| if ((b = malloc(sizeof(*b))) == NULL) |
| return cnt; |
| *b = *a; |
| b->next = a->next; |
| a->next = b; |
| } |
| memcpy(b->addr.data, *ptr, len); |
| b->addr.bytelen = len; |
| b->addr.bitlen = len*8; |
| b->addr.family = he->h_addrtype; |
| ptr++; |
| cnt++; |
| } |
| return cnt; |
| } |
| |
| static int get_dns_host(struct aafilter *a, const char *addr, int fam) |
| { |
| static int notfirst; |
| int cnt = 0; |
| struct hostent *he; |
| |
| a->addr.bitlen = 0; |
| if (!notfirst) { |
| sethostent(1); |
| notfirst = 1; |
| } |
| he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam); |
| if (he) |
| cnt = remember_he(a, he); |
| if (fam == AF_UNSPEC) { |
| he = gethostbyname2(addr, AF_INET6); |
| if (he) |
| cnt += remember_he(a, he); |
| } |
| return !cnt; |
| } |
| |
| static int xll_initted = 0; |
| |
| static void xll_init(void) |
| { |
| struct rtnl_handle rth; |
| rtnl_open(&rth, 0); |
| ll_init_map(&rth); |
| rtnl_close(&rth); |
| xll_initted = 1; |
| } |
| |
| static const char *xll_index_to_name(int index) |
| { |
| if (!xll_initted) |
| xll_init(); |
| return ll_index_to_name(index); |
| } |
| |
| static int xll_name_to_index(const char *dev) |
| { |
| if (!xll_initted) |
| xll_init(); |
| return ll_name_to_index(dev); |
| } |
| |
| void *parse_hostcond(char *addr) |
| { |
| char *port = NULL; |
| struct aafilter a; |
| struct aafilter *res; |
| int fam = preferred_family; |
| |
| memset(&a, 0, sizeof(a)); |
| a.port = -1; |
| |
| if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) { |
| char *p; |
| a.addr.family = AF_UNIX; |
| if (strncmp(addr, "unix:", 5) == 0) |
| addr+=5; |
| p = strdup(addr); |
| a.addr.bitlen = 8*strlen(p); |
| memcpy(a.addr.data, &p, sizeof(p)); |
| goto out; |
| } |
| |
| if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) { |
| a.addr.family = AF_PACKET; |
| a.addr.bitlen = 0; |
| if (strncmp(addr, "link:", 5) == 0) |
| addr+=5; |
| port = strchr(addr, ':'); |
| if (port) { |
| *port = 0; |
| if (port[1] && strcmp(port+1, "*")) { |
| if (get_integer(&a.port, port+1, 0)) { |
| if ((a.port = xll_name_to_index(port+1)) <= 0) |
| return NULL; |
| } |
| } |
| } |
| if (addr[0] && strcmp(addr, "*")) { |
| unsigned short tmp; |
| a.addr.bitlen = 32; |
| if (ll_proto_a2n(&tmp, addr)) |
| return NULL; |
| a.addr.data[0] = ntohs(tmp); |
| } |
| goto out; |
| } |
| |
| if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) { |
| a.addr.family = AF_NETLINK; |
| a.addr.bitlen = 0; |
| if (strncmp(addr, "netlink:", 8) == 0) |
| addr+=8; |
| port = strchr(addr, ':'); |
| if (port) { |
| *port = 0; |
| if (port[1] && strcmp(port+1, "*")) { |
| if (get_integer(&a.port, port+1, 0)) { |
| if (strcmp(port+1, "kernel") == 0) |
| a.port = 0; |
| else |
| return NULL; |
| } |
| } |
| } |
| if (addr[0] && strcmp(addr, "*")) { |
| a.addr.bitlen = 32; |
| if (get_u32(a.addr.data, addr, 0)) { |
| if (strcmp(addr, "rtnl") == 0) |
| a.addr.data[0] = 0; |
| else if (strcmp(addr, "fw") == 0) |
| a.addr.data[0] = 3; |
| else if (strcmp(addr, "tcpdiag") == 0) |
| a.addr.data[0] = 4; |
| else |
| return NULL; |
| } |
| } |
| goto out; |
| } |
| |
| if (strncmp(addr, "inet:", 5) == 0) { |
| addr += 5; |
| fam = AF_INET; |
| } else if (strncmp(addr, "inet6:", 6) == 0) { |
| addr += 6; |
| fam = AF_INET6; |
| } |
| |
| /* URL-like literal [] */ |
| if (addr[0] == '[') { |
| addr++; |
| if ((port = strchr(addr, ']')) == NULL) |
| return NULL; |
| *port++ = 0; |
| } else if (addr[0] == '*') { |
| port = addr+1; |
| } else { |
| port = strrchr(strchr(addr, '/') ? : addr, ':'); |
| } |
| if (port && *port) { |
| if (*port != ':') |
| return NULL; |
| *port++ = 0; |
| if (*port && *port != '*') { |
| if (get_integer(&a.port, port, 0)) { |
| struct servent *se1 = NULL; |
| struct servent *se2 = NULL; |
| if (current_filter.dbs&(1<<UDP_DB)) |
| se1 = getservbyname(port, UDP_PROTO); |
| if (current_filter.dbs&(1<<TCP_DB)) |
| se2 = getservbyname(port, TCP_PROTO); |
| if (se1 && se2 && se1->s_port != se2->s_port) { |
| fprintf(stderr, "Error: ambiguous port \"%s\".\n", port); |
| return NULL; |
| } |
| if (!se1) |
| se1 = se2; |
| if (se1) { |
| a.port = ntohs(se1->s_port); |
| } else { |
| struct scache *s; |
| for (s = rlist; s; s = s->next) { |
| if ((s->proto == UDP_PROTO && |
| (current_filter.dbs&(1<<UDP_DB))) || |
| (s->proto == TCP_PROTO && |
| (current_filter.dbs&(1<<TCP_DB)))) { |
| if (s->name && strcmp(s->name, port) == 0) { |
| if (a.port > 0 && a.port != s->port) { |
| fprintf(stderr, "Error: ambiguous port \"%s\".\n", port); |
| return NULL; |
| } |
| a.port = s->port; |
| } |
| } |
| } |
| if (a.port <= 0) { |
| fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port); |
| return NULL; |
| } |
| } |
| } |
| } |
| } |
| if (addr && *addr && *addr != '*') { |
| if (get_prefix_1(&a.addr, addr, fam)) { |
| if (get_dns_host(&a, addr, fam)) { |
| fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr); |
| return NULL; |
| } |
| } |
| } |
| |
| out: |
| res = malloc(sizeof(*res)); |
| if (res) |
| memcpy(res, &a, sizeof(a)); |
| return res; |
| } |
| |
| static int tcp_show_line(char *line, const struct filter *f, int family) |
| { |
| struct tcpstat s; |
| char *loc, *rem, *data; |
| char opt[256]; |
| int n; |
| char *p; |
| |
| if ((p = strchr(line, ':')) == NULL) |
| return -1; |
| loc = p+2; |
| |
| if ((p = strchr(loc, ':')) == NULL) |
| return -1; |
| p[5] = 0; |
| rem = p+6; |
| |
| if ((p = strchr(rem, ':')) == NULL) |
| return -1; |
| p[5] = 0; |
| data = p+6; |
| |
| do { |
| int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); |
| |
| if (!(f->states & (1<<state))) |
| return 0; |
| } while (0); |
| |
| s.local.family = s.remote.family = family; |
| if (family == AF_INET) { |
| sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport); |
| sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport); |
| s.local.bytelen = s.remote.bytelen = 4; |
| } else { |
| sscanf(loc, "%08x%08x%08x%08x:%x", |
| s.local.data, |
| s.local.data+1, |
| s.local.data+2, |
| s.local.data+3, |
| &s.lport); |
| sscanf(rem, "%08x%08x%08x%08x:%x", |
| s.remote.data, |
| s.remote.data+1, |
| s.remote.data+2, |
| s.remote.data+3, |
| &s.rport); |
| s.local.bytelen = s.remote.bytelen = 16; |
| } |
| |
| if (f->f && run_ssfilter(f->f, &s) == 0) |
| return 0; |
| |
| opt[0] = 0; |
| n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n", |
| &s.state, &s.wq, &s.rq, |
| &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino, |
| &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack, |
| &s.cwnd, &s.ssthresh, opt); |
| |
| if (n < 17) |
| opt[0] = 0; |
| |
| if (n < 12) { |
| s.rto = 0; |
| s.cwnd = 2; |
| s.ssthresh = -1; |
| s.ato = s.qack = 0; |
| } |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, "tcp"); |
| if (state_width) |
| printf("%-*s ", state_width, sstate_name[s.state]); |
| |
| printf("%-6d %-6d ", s.rq, s.wq); |
| |
| formatted_print(&s.local, s.lport); |
| formatted_print(&s.remote, s.rport); |
| |
| if (show_options) { |
| if (s.timer) { |
| if (s.timer > 4) |
| s.timer = 5; |
| printf(" timer:(%s,%s,%d)", |
| tmr_name[s.timer], |
| print_hz_timer(s.timeout), |
| s.timer != 1 ? s.probes : s.retrs); |
| } |
| } |
| if (show_tcpinfo) { |
| int hz = get_user_hz(); |
| if (s.rto && s.rto != 3*hz) |
| printf(" rto:%g", (double)s.rto/hz); |
| if (s.ato) |
| printf(" ato:%g", (double)s.ato/hz); |
| if (s.cwnd != 2) |
| printf(" cwnd:%d", s.cwnd); |
| if (s.ssthresh != -1) |
| printf(" ssthresh:%d", s.ssthresh); |
| if (s.qack/2) |
| printf(" qack:%d", s.qack/2); |
| if (s.qack&1) |
| printf(" bidir"); |
| } |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| if (show_details) { |
| if (s.uid) |
| printf(" uid:%u", (unsigned)s.uid); |
| printf(" ino:%u", s.ino); |
| printf(" sk:%llx", s.sk); |
| if (opt[0]) |
| printf(" opt:\"%s\"", opt); |
| } |
| printf("\n"); |
| |
| return 0; |
| } |
| |
| static int generic_record_read(FILE *fp, |
| int (*worker)(char*, const struct filter *, int), |
| const struct filter *f, int fam) |
| { |
| char line[256]; |
| |
| /* skip header */ |
| if (fgets(line, sizeof(line), fp) == NULL) |
| goto outerr; |
| |
| while (fgets(line, sizeof(line), fp) != NULL) { |
| int n = strlen(line); |
| if (n == 0 || line[n-1] != '\n') { |
| errno = -EINVAL; |
| return -1; |
| } |
| line[n-1] = 0; |
| |
| if (worker(line, f, fam) < 0) |
| return 0; |
| } |
| outerr: |
| |
| return ferror(fp) ? -1 : 0; |
| } |
| |
| static char *sprint_bw(char *buf, double bw) |
| { |
| if (bw > 1000000.) |
| sprintf(buf,"%.1fM", bw / 1000000.); |
| else if (bw > 1000.) |
| sprintf(buf,"%.1fK", bw / 1000.); |
| else |
| sprintf(buf, "%g", bw); |
| |
| return buf; |
| } |
| |
| static void print_skmeminfo(struct rtattr *tb[], int attrtype) |
| { |
| const __u32 *skmeminfo; |
| if (!tb[attrtype]) |
| return; |
| skmeminfo = RTA_DATA(tb[attrtype]); |
| |
| printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u", |
| skmeminfo[SK_MEMINFO_RMEM_ALLOC], |
| skmeminfo[SK_MEMINFO_RCVBUF], |
| skmeminfo[SK_MEMINFO_WMEM_ALLOC], |
| skmeminfo[SK_MEMINFO_SNDBUF], |
| skmeminfo[SK_MEMINFO_FWD_ALLOC], |
| skmeminfo[SK_MEMINFO_WMEM_QUEUED], |
| skmeminfo[SK_MEMINFO_OPTMEM]); |
| |
| if (RTA_PAYLOAD(tb[attrtype]) >= |
| (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32)) |
| printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]); |
| |
| printf(")"); |
| } |
| |
| static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r, |
| struct rtattr *tb[]) |
| { |
| char b1[64]; |
| double rtt = 0; |
| |
| if (tb[INET_DIAG_SKMEMINFO]) { |
| print_skmeminfo(tb, INET_DIAG_SKMEMINFO); |
| } else if (tb[INET_DIAG_MEMINFO]) { |
| const struct inet_diag_meminfo *minfo |
| = RTA_DATA(tb[INET_DIAG_MEMINFO]); |
| printf(" mem:(r%u,w%u,f%u,t%u)", |
| minfo->idiag_rmem, |
| minfo->idiag_wmem, |
| minfo->idiag_fmem, |
| minfo->idiag_tmem); |
| } |
| |
| if (tb[INET_DIAG_INFO]) { |
| struct tcp_info *info; |
| int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]); |
| |
| /* workaround for older kernels with less fields */ |
| if (len < sizeof(*info)) { |
| info = alloca(sizeof(*info)); |
| memset(info, 0, sizeof(*info)); |
| memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len); |
| } else |
| info = RTA_DATA(tb[INET_DIAG_INFO]); |
| |
| if (show_options) { |
| if (info->tcpi_options & TCPI_OPT_TIMESTAMPS) |
| printf(" ts"); |
| if (info->tcpi_options & TCPI_OPT_SACK) |
| printf(" sack"); |
| if (info->tcpi_options & TCPI_OPT_ECN) |
| printf(" ecn"); |
| if (info->tcpi_options & TCPI_OPT_ECN_SEEN) |
| printf(" ecnseen"); |
| if (info->tcpi_options & TCPI_OPT_SYN_DATA) |
| printf(" fastopen"); |
| } |
| |
| if (tb[INET_DIAG_CONG]) |
| printf(" %s", rta_getattr_str(tb[INET_DIAG_CONG])); |
| |
| if (info->tcpi_options & TCPI_OPT_WSCALE) |
| printf(" wscale:%d,%d", info->tcpi_snd_wscale, |
| info->tcpi_rcv_wscale); |
| if (info->tcpi_rto && info->tcpi_rto != 3000000) |
| printf(" rto:%g", (double)info->tcpi_rto/1000); |
| if (info->tcpi_rtt) |
| printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000, |
| (double)info->tcpi_rttvar/1000); |
| if (info->tcpi_ato) |
| printf(" ato:%g", (double)info->tcpi_ato/1000); |
| if (info->tcpi_snd_mss) |
| printf(" mss:%d", info->tcpi_snd_mss); |
| if (info->tcpi_snd_cwnd != 2) |
| printf(" cwnd:%d", info->tcpi_snd_cwnd); |
| if (info->tcpi_snd_ssthresh < 0xFFFF) |
| printf(" ssthresh:%d", info->tcpi_snd_ssthresh); |
| |
| rtt = (double) info->tcpi_rtt; |
| if (tb[INET_DIAG_VEGASINFO]) { |
| const struct tcpvegas_info *vinfo |
| = RTA_DATA(tb[INET_DIAG_VEGASINFO]); |
| |
| if (vinfo->tcpv_enabled && |
| vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff) |
| rtt = vinfo->tcpv_rtt; |
| } |
| |
| if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) { |
| printf(" send %sbps", |
| sprint_bw(b1, (double) info->tcpi_snd_cwnd * |
| (double) info->tcpi_snd_mss * 8000000. |
| / rtt)); |
| } |
| |
| if (info->tcpi_unacked) |
| printf(" unacked:%u", info->tcpi_unacked); |
| if (info->tcpi_retrans || info->tcpi_total_retrans) |
| printf(" retrans:%u/%u", info->tcpi_retrans, |
| info->tcpi_total_retrans); |
| if (info->tcpi_lost) |
| printf(" lost:%u", info->tcpi_lost); |
| if (info->tcpi_sacked && r->idiag_state != SS_LISTEN) |
| printf(" sacked:%u", info->tcpi_sacked); |
| if (info->tcpi_fackets) |
| printf(" fackets:%u", info->tcpi_fackets); |
| if (info->tcpi_reordering != 3) |
| printf(" reordering:%d", info->tcpi_reordering); |
| if (info->tcpi_rcv_rtt) |
| printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000); |
| if (info->tcpi_rcv_space) |
| printf(" rcv_space:%d", info->tcpi_rcv_space); |
| |
| } |
| } |
| |
| static int inet_show_sock(struct nlmsghdr *nlh, struct filter *f) |
| { |
| struct rtattr * tb[INET_DIAG_MAX+1]; |
| struct inet_diag_msg *r = NLMSG_DATA(nlh); |
| struct tcpstat s; |
| |
| parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| s.state = r->idiag_state; |
| s.local.family = s.remote.family = r->idiag_family; |
| s.lport = ntohs(r->id.idiag_sport); |
| s.rport = ntohs(r->id.idiag_dport); |
| if (s.local.family == AF_INET) { |
| s.local.bytelen = s.remote.bytelen = 4; |
| } else { |
| s.local.bytelen = s.remote.bytelen = 16; |
| } |
| memcpy(s.local.data, r->id.idiag_src, s.local.bytelen); |
| memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen); |
| |
| if (f && f->f && run_ssfilter(f->f, &s) == 0) |
| return 0; |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, "tcp"); |
| if (state_width) |
| printf("%-*s ", state_width, sstate_name[s.state]); |
| |
| printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue); |
| |
| formatted_print(&s.local, s.lport); |
| formatted_print(&s.remote, s.rport); |
| |
| if (show_options) { |
| if (r->idiag_timer) { |
| if (r->idiag_timer > 4) |
| r->idiag_timer = 5; |
| printf(" timer:(%s,%s,%d)", |
| tmr_name[r->idiag_timer], |
| print_ms_timer(r->idiag_expires), |
| r->idiag_retrans); |
| } |
| } |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| if (show_details) { |
| if (r->idiag_uid) |
| printf(" uid:%u", (unsigned)r->idiag_uid); |
| printf(" ino:%u", r->idiag_inode); |
| printf(" sk:"); |
| if (r->id.idiag_cookie[1] != 0) |
| printf("%08x", r->id.idiag_cookie[1]); |
| printf("%08x", r->id.idiag_cookie[0]); |
| if (tb[INET_DIAG_SHUTDOWN]) { |
| unsigned char mask; |
| mask = *(__u8 *)RTA_DATA(tb[INET_DIAG_SHUTDOWN]); |
| printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>'); |
| } |
| } |
| if (show_mem || show_tcpinfo) { |
| printf("\n\t"); |
| tcp_show_info(nlh, r, tb); |
| } |
| |
| printf("\n"); |
| |
| return 0; |
| } |
| |
| static int tcpdiag_send(int fd, int protocol, struct filter *f) |
| { |
| struct sockaddr_nl nladdr; |
| struct { |
| struct nlmsghdr nlh; |
| struct inet_diag_req r; |
| } req; |
| char *bc = NULL; |
| int bclen; |
| struct msghdr msg; |
| struct rtattr rta; |
| struct iovec iov[3]; |
| |
| if (protocol == IPPROTO_UDP) |
| return -1; |
| |
| memset(&nladdr, 0, sizeof(nladdr)); |
| nladdr.nl_family = AF_NETLINK; |
| |
| req.nlh.nlmsg_len = sizeof(req); |
| if (protocol == IPPROTO_TCP) |
| req.nlh.nlmsg_type = TCPDIAG_GETSOCK; |
| else |
| req.nlh.nlmsg_type = DCCPDIAG_GETSOCK; |
| req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST; |
| req.nlh.nlmsg_pid = 0; |
| req.nlh.nlmsg_seq = 123456; |
| memset(&req.r, 0, sizeof(req.r)); |
| req.r.idiag_family = AF_INET; |
| req.r.idiag_states = f->states; |
| if (show_mem) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1)); |
| } |
| |
| if (show_tcpinfo) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1)); |
| } |
| |
| iov[0] = (struct iovec){ |
| .iov_base = &req, |
| .iov_len = sizeof(req) |
| }; |
| if (f->f) { |
| bclen = ssfilter_bytecompile(f->f, &bc); |
| rta.rta_type = INET_DIAG_REQ_BYTECODE; |
| rta.rta_len = RTA_LENGTH(bclen); |
| iov[1] = (struct iovec){ &rta, sizeof(rta) }; |
| iov[2] = (struct iovec){ bc, bclen }; |
| req.nlh.nlmsg_len += RTA_LENGTH(bclen); |
| } |
| |
| msg = (struct msghdr) { |
| .msg_name = (void*)&nladdr, |
| .msg_namelen = sizeof(nladdr), |
| .msg_iov = iov, |
| .msg_iovlen = f->f ? 3 : 1, |
| }; |
| |
| if (sendmsg(fd, &msg, 0) < 0) { |
| close(fd); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int sockdiag_send(int family, int fd, int protocol, struct filter *f) |
| { |
| struct sockaddr_nl nladdr; |
| struct { |
| struct nlmsghdr nlh; |
| struct inet_diag_req_v2 r; |
| } req; |
| char *bc = NULL; |
| int bclen; |
| struct msghdr msg; |
| struct rtattr rta; |
| struct iovec iov[3]; |
| |
| if (family == PF_UNSPEC) |
| return tcpdiag_send(fd, protocol, f); |
| |
| memset(&nladdr, 0, sizeof(nladdr)); |
| nladdr.nl_family = AF_NETLINK; |
| |
| req.nlh.nlmsg_len = sizeof(req); |
| req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY; |
| req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST; |
| req.nlh.nlmsg_pid = 0; |
| req.nlh.nlmsg_seq = 123456; |
| memset(&req.r, 0, sizeof(req.r)); |
| req.r.sdiag_family = family; |
| req.r.sdiag_protocol = protocol; |
| req.r.idiag_states = f->states; |
| if (show_mem) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1)); |
| } |
| |
| if (show_tcpinfo) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1)); |
| } |
| |
| iov[0] = (struct iovec){ |
| .iov_base = &req, |
| .iov_len = sizeof(req) |
| }; |
| if (f->f) { |
| bclen = ssfilter_bytecompile(f->f, &bc); |
| rta.rta_type = INET_DIAG_REQ_BYTECODE; |
| rta.rta_len = RTA_LENGTH(bclen); |
| iov[1] = (struct iovec){ &rta, sizeof(rta) }; |
| iov[2] = (struct iovec){ bc, bclen }; |
| req.nlh.nlmsg_len += RTA_LENGTH(bclen); |
| } |
| |
| msg = (struct msghdr) { |
| .msg_name = (void*)&nladdr, |
| .msg_namelen = sizeof(nladdr), |
| .msg_iov = iov, |
| .msg_iovlen = f->f ? 3 : 1, |
| }; |
| |
| if (sendmsg(fd, &msg, 0) < 0) { |
| close(fd); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol) |
| { |
| int fd, family; |
| struct sockaddr_nl nladdr; |
| struct msghdr msg; |
| char buf[8192]; |
| struct iovec iov[3]; |
| |
| if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0) |
| return -1; |
| |
| family = PF_INET; |
| again: |
| if (sockdiag_send(family, fd, protocol, f)) |
| return -1; |
| |
| memset(&nladdr, 0, sizeof(nladdr)); |
| nladdr.nl_family = AF_NETLINK; |
| |
| iov[0] = (struct iovec){ |
| .iov_base = buf, |
| .iov_len = sizeof(buf) |
| }; |
| |
| while (1) { |
| int status; |
| struct nlmsghdr *h; |
| |
| msg = (struct msghdr) { |
| (void*)&nladdr, sizeof(nladdr), |
| iov, 1, |
| NULL, 0, |
| 0 |
| }; |
| |
| status = recvmsg(fd, &msg, 0); |
| |
| if (status < 0) { |
| if (errno == EINTR) |
| continue; |
| perror("OVERRUN"); |
| continue; |
| } |
| if (status == 0) { |
| fprintf(stderr, "EOF on netlink\n"); |
| close(fd); |
| return 0; |
| } |
| |
| if (dump_fp) |
| fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp); |
| |
| h = (struct nlmsghdr*)buf; |
| while (NLMSG_OK(h, status)) { |
| int err; |
| struct inet_diag_msg *r = NLMSG_DATA(h); |
| |
| if (/*h->nlmsg_pid != rth->local.nl_pid ||*/ |
| h->nlmsg_seq != 123456) |
| goto skip_it; |
| |
| if (h->nlmsg_type == NLMSG_DONE) |
| goto done; |
| |
| if (h->nlmsg_type == NLMSG_ERROR) { |
| struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); |
| if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { |
| fprintf(stderr, "ERROR truncated\n"); |
| } else { |
| if (family != PF_UNSPEC) { |
| family = PF_UNSPEC; |
| goto again; |
| } |
| |
| errno = -err->error; |
| if (errno == EOPNOTSUPP) { |
| close(fd); |
| return -1; |
| } |
| perror("TCPDIAG answers"); |
| } |
| |
| goto done; |
| } |
| if (!dump_fp) { |
| if (!(f->families & (1<<r->idiag_family))) { |
| h = NLMSG_NEXT(h, status); |
| continue; |
| } |
| err = inet_show_sock(h, NULL); |
| if (err < 0) { |
| close(fd); |
| return err; |
| } |
| } |
| |
| skip_it: |
| h = NLMSG_NEXT(h, status); |
| } |
| if (msg.msg_flags & MSG_TRUNC) { |
| fprintf(stderr, "Message truncated\n"); |
| continue; |
| } |
| if (status) { |
| fprintf(stderr, "!!!Remnant of size %d\n", status); |
| exit(1); |
| } |
| } |
| done: |
| if (family == PF_INET) { |
| family = PF_INET6; |
| goto again; |
| } |
| |
| close(fd); |
| return 0; |
| } |
| |
| static int tcp_show_netlink_file(struct filter *f) |
| { |
| FILE *fp; |
| char buf[8192]; |
| |
| if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) { |
| perror("fopen($TCPDIAG_FILE)"); |
| return -1; |
| } |
| |
| while (1) { |
| int status, err; |
| struct nlmsghdr *h = (struct nlmsghdr*)buf; |
| |
| status = fread(buf, 1, sizeof(*h), fp); |
| if (status < 0) { |
| perror("Reading header from $TCPDIAG_FILE"); |
| return -1; |
| } |
| if (status != sizeof(*h)) { |
| perror("Unexpected EOF reading $TCPDIAG_FILE"); |
| return -1; |
| } |
| |
| status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp); |
| |
| if (status < 0) { |
| perror("Reading $TCPDIAG_FILE"); |
| return -1; |
| } |
| if (status + sizeof(*h) < h->nlmsg_len) { |
| perror("Unexpected EOF reading $TCPDIAG_FILE"); |
| return -1; |
| } |
| |
| /* The only legal exit point */ |
| if (h->nlmsg_type == NLMSG_DONE) |
| return 0; |
| |
| if (h->nlmsg_type == NLMSG_ERROR) { |
| struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); |
| if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { |
| fprintf(stderr, "ERROR truncated\n"); |
| } else { |
| errno = -err->error; |
| perror("TCPDIAG answered"); |
| } |
| return -1; |
| } |
| |
| err = inet_show_sock(h, f); |
| if (err < 0) |
| return err; |
| } |
| } |
| |
| static int tcp_show(struct filter *f, int socktype) |
| { |
| FILE *fp = NULL; |
| char *buf = NULL; |
| int bufsize = 64*1024; |
| |
| dg_proto = TCP_PROTO; |
| |
| if (getenv("TCPDIAG_FILE")) |
| return tcp_show_netlink_file(f); |
| |
| if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT") |
| && inet_show_netlink(f, NULL, socktype) == 0) |
| return 0; |
| |
| /* Sigh... We have to parse /proc/net/tcp... */ |
| |
| |
| /* Estimate amount of sockets and try to allocate |
| * huge buffer to read all the table at one read. |
| * Limit it by 16MB though. The assumption is: as soon as |
| * kernel was able to hold information about N connections, |
| * it is able to give us some memory for snapshot. |
| */ |
| if (1) { |
| int guess = slabstat.socks+slabstat.tcp_syns; |
| if (f->states&(1<<SS_TIME_WAIT)) |
| guess += slabstat.tcp_tws; |
| if (guess > (16*1024*1024)/128) |
| guess = (16*1024*1024)/128; |
| guess *= 128; |
| if (guess > bufsize) |
| bufsize = guess; |
| } |
| while (bufsize >= 64*1024) { |
| if ((buf = malloc(bufsize)) != NULL) |
| break; |
| bufsize /= 2; |
| } |
| if (buf == NULL) { |
| errno = ENOMEM; |
| return -1; |
| } |
| |
| if (f->families & (1<<AF_INET)) { |
| if ((fp = net_tcp_open()) == NULL) |
| goto outerr; |
| |
| setbuffer(fp, buf, bufsize); |
| if (generic_record_read(fp, tcp_show_line, f, AF_INET)) |
| goto outerr; |
| fclose(fp); |
| } |
| |
| if ((f->families & (1<<AF_INET6)) && |
| (fp = net_tcp6_open()) != NULL) { |
| setbuffer(fp, buf, bufsize); |
| if (generic_record_read(fp, tcp_show_line, f, AF_INET6)) |
| goto outerr; |
| fclose(fp); |
| } |
| |
| free(buf); |
| return 0; |
| |
| outerr: |
| do { |
| int saved_errno = errno; |
| if (buf) |
| free(buf); |
| if (fp) |
| fclose(fp); |
| errno = saved_errno; |
| return -1; |
| } while (0); |
| } |
| |
| |
| static int dgram_show_line(char *line, const struct filter *f, int family) |
| { |
| struct tcpstat s; |
| char *loc, *rem, *data; |
| char opt[256]; |
| int n; |
| char *p; |
| |
| if ((p = strchr(line, ':')) == NULL) |
| return -1; |
| loc = p+2; |
| |
| if ((p = strchr(loc, ':')) == NULL) |
| return -1; |
| p[5] = 0; |
| rem = p+6; |
| |
| if ((p = strchr(rem, ':')) == NULL) |
| return -1; |
| p[5] = 0; |
| data = p+6; |
| |
| do { |
| int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); |
| |
| if (!(f->states & (1<<state))) |
| return 0; |
| } while (0); |
| |
| s.local.family = s.remote.family = family; |
| if (family == AF_INET) { |
| sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport); |
| sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport); |
| s.local.bytelen = s.remote.bytelen = 4; |
| } else { |
| sscanf(loc, "%08x%08x%08x%08x:%x", |
| s.local.data, |
| s.local.data+1, |
| s.local.data+2, |
| s.local.data+3, |
| &s.lport); |
| sscanf(rem, "%08x%08x%08x%08x:%x", |
| s.remote.data, |
| s.remote.data+1, |
| s.remote.data+2, |
| s.remote.data+3, |
| &s.rport); |
| s.local.bytelen = s.remote.bytelen = 16; |
| } |
| |
| if (f->f && run_ssfilter(f->f, &s) == 0) |
| return 0; |
| |
| opt[0] = 0; |
| n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n", |
| &s.state, &s.wq, &s.rq, |
| &s.uid, &s.ino, |
| &s.refcnt, &s.sk, opt); |
| |
| if (n < 9) |
| opt[0] = 0; |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, dg_proto); |
| if (state_width) |
| printf("%-*s ", state_width, sstate_name[s.state]); |
| |
| printf("%-6d %-6d ", s.rq, s.wq); |
| |
| formatted_print(&s.local, s.lport); |
| formatted_print(&s.remote, s.rport); |
| |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| |
| if (show_details) { |
| if (s.uid) |
| printf(" uid=%u", (unsigned)s.uid); |
| printf(" ino=%u", s.ino); |
| printf(" sk=%llx", s.sk); |
| if (opt[0]) |
| printf(" opt:\"%s\"", opt); |
| } |
| printf("\n"); |
| |
| return 0; |
| } |
| |
| |
| static int udp_show(struct filter *f) |
| { |
| FILE *fp = NULL; |
| |
| if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT") |
| && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0) |
| return 0; |
| |
| dg_proto = UDP_PROTO; |
| |
| if (f->families&(1<<AF_INET)) { |
| if ((fp = net_udp_open()) == NULL) |
| goto outerr; |
| if (generic_record_read(fp, dgram_show_line, f, AF_INET)) |
| goto outerr; |
| fclose(fp); |
| } |
| |
| if ((f->families&(1<<AF_INET6)) && |
| (fp = net_udp6_open()) != NULL) { |
| if (generic_record_read(fp, dgram_show_line, f, AF_INET6)) |
| goto outerr; |
| fclose(fp); |
| } |
| return 0; |
| |
| outerr: |
| do { |
| int saved_errno = errno; |
| if (fp) |
| fclose(fp); |
| errno = saved_errno; |
| return -1; |
| } while (0); |
| } |
| |
| static int raw_show(struct filter *f) |
| { |
| FILE *fp = NULL; |
| |
| dg_proto = RAW_PROTO; |
| |
| if (f->families&(1<<AF_INET)) { |
| if ((fp = net_raw_open()) == NULL) |
| goto outerr; |
| if (generic_record_read(fp, dgram_show_line, f, AF_INET)) |
| goto outerr; |
| fclose(fp); |
| } |
| |
| if ((f->families&(1<<AF_INET6)) && |
| (fp = net_raw6_open()) != NULL) { |
| if (generic_record_read(fp, dgram_show_line, f, AF_INET6)) |
| goto outerr; |
| fclose(fp); |
| } |
| return 0; |
| |
| outerr: |
| do { |
| int saved_errno = errno; |
| if (fp) |
| fclose(fp); |
| errno = saved_errno; |
| return -1; |
| } while (0); |
| } |
| |
| |
| struct unixstat |
| { |
| struct unixstat *next; |
| int ino; |
| int peer; |
| int rq; |
| int wq; |
| int state; |
| int type; |
| char *name; |
| }; |
| |
| |
| |
| int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT, |
| SS_ESTABLISHED, SS_CLOSING }; |
| |
| |
| #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat)) |
| |
| static void unix_list_free(struct unixstat *list) |
| { |
| while (list) { |
| struct unixstat *s = list; |
| list = list->next; |
| if (s->name) |
| free(s->name); |
| free(s); |
| } |
| } |
| |
| static void unix_list_print(struct unixstat *list, struct filter *f) |
| { |
| struct unixstat *s; |
| char *peer; |
| |
| for (s = list; s; s = s->next) { |
| if (!(f->states & (1<<s->state))) |
| continue; |
| if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB))) |
| continue; |
| if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB))) |
| continue; |
| |
| peer = "*"; |
| if (s->peer) { |
| struct unixstat *p; |
| for (p = list; p; p = p->next) { |
| if (s->peer == p->ino) |
| break; |
| } |
| if (!p) { |
| peer = "?"; |
| } else { |
| peer = p->name ? : "*"; |
| } |
| } |
| |
| if (f->f) { |
| struct tcpstat tst; |
| tst.local.family = AF_UNIX; |
| tst.remote.family = AF_UNIX; |
| memcpy(tst.local.data, &s->name, sizeof(s->name)); |
| if (strcmp(peer, "*") == 0) |
| memset(tst.remote.data, 0, sizeof(peer)); |
| else |
| memcpy(tst.remote.data, &peer, sizeof(peer)); |
| if (run_ssfilter(f->f, &tst) == 0) |
| continue; |
| } |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, |
| s->type == SOCK_STREAM ? "u_str" : "u_dgr"); |
| if (state_width) |
| printf("%-*s ", state_width, sstate_name[s->state]); |
| printf("%-6d %-6d ", s->rq, s->wq); |
| printf("%*s %-*d %*s %-*d", |
| addr_width, s->name ? : "*", serv_width, s->ino, |
| addr_width, peer, serv_width, s->peer); |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| printf("\n"); |
| } |
| } |
| |
| static int unix_show_sock(struct nlmsghdr *nlh, struct filter *f) |
| { |
| struct unix_diag_msg *r = NLMSG_DATA(nlh); |
| struct rtattr *tb[UNIX_DIAG_MAX+1]; |
| char name[128]; |
| int peer_ino; |
| __u32 rqlen, wqlen; |
| |
| parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr*)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, |
| r->udiag_type == SOCK_STREAM ? "u_str" : "u_dgr"); |
| if (state_width) |
| printf("%-*s ", state_width, sstate_name[r->udiag_state]); |
| |
| if (tb[UNIX_DIAG_RQLEN]) { |
| struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]); |
| rqlen = rql->udiag_rqueue; |
| wqlen = rql->udiag_wqueue; |
| } else { |
| rqlen = 0; |
| wqlen = 0; |
| } |
| |
| printf("%-6u %-6u ", rqlen, wqlen); |
| |
| if (tb[UNIX_DIAG_NAME]) { |
| int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]); |
| |
| memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len); |
| name[len] = '\0'; |
| if (name[0] == '\0') |
| name[0] = '@'; |
| } else |
| sprintf(name, "*"); |
| |
| if (tb[UNIX_DIAG_PEER]) |
| peer_ino = rta_getattr_u32(tb[UNIX_DIAG_PEER]); |
| else |
| peer_ino = 0; |
| |
| printf("%*s %-*d %*s %-*d", |
| addr_width, name, |
| serv_width, r->udiag_ino, |
| addr_width, "*", /* FIXME */ |
| serv_width, peer_ino); |
| |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(r->udiag_ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| |
| if (show_mem) { |
| printf("\n\t"); |
| print_skmeminfo(tb, UNIX_DIAG_MEMINFO); |
| } |
| |
| if (show_details) { |
| if (tb[UNIX_DIAG_SHUTDOWN]) { |
| unsigned char mask; |
| mask = *(__u8 *)RTA_DATA(tb[UNIX_DIAG_SHUTDOWN]); |
| printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>'); |
| } |
| } |
| |
| printf("\n"); |
| |
| return 0; |
| } |
| |
| static int handle_netlink_request(struct filter *f, FILE *dump_fp, |
| struct nlmsghdr *req, size_t size, |
| int (* show_one_sock)(struct nlmsghdr *nlh, struct filter *f)) |
| { |
| int fd; |
| char buf[8192]; |
| |
| if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0) |
| return -1; |
| |
| if (send(fd, req, size, 0) < 0) { |
| close(fd); |
| return -1; |
| } |
| |
| while (1) { |
| ssize_t status; |
| struct nlmsghdr *h; |
| struct sockaddr_nl nladdr; |
| socklen_t slen = sizeof(nladdr); |
| |
| status = recvfrom(fd, buf, sizeof(buf), 0, |
| (struct sockaddr *) &nladdr, &slen); |
| if (status < 0) { |
| if (errno == EINTR) |
| continue; |
| perror("OVERRUN"); |
| continue; |
| } |
| if (status == 0) { |
| fprintf(stderr, "EOF on netlink\n"); |
| goto close_it; |
| } |
| |
| if (dump_fp) |
| fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp); |
| |
| h = (struct nlmsghdr*)buf; |
| while (NLMSG_OK(h, status)) { |
| int err; |
| |
| if (/*h->nlmsg_pid != rth->local.nl_pid ||*/ |
| h->nlmsg_seq != 123456) |
| goto skip_it; |
| |
| if (h->nlmsg_type == NLMSG_DONE) |
| goto close_it; |
| |
| if (h->nlmsg_type == NLMSG_ERROR) { |
| struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); |
| if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { |
| fprintf(stderr, "ERROR truncated\n"); |
| } else { |
| errno = -err->error; |
| if (errno != ENOENT) |
| fprintf(stderr, "DIAG answers %d\n", errno); |
| } |
| close(fd); |
| return -1; |
| } |
| if (!dump_fp) { |
| err = show_one_sock(h, f); |
| if (err < 0) { |
| close(fd); |
| return err; |
| } |
| } |
| |
| skip_it: |
| h = NLMSG_NEXT(h, status); |
| } |
| |
| if (status) { |
| fprintf(stderr, "!!!Remnant of size %zd\n", status); |
| exit(1); |
| } |
| } |
| |
| close_it: |
| close(fd); |
| return 0; |
| } |
| |
| static int unix_show_netlink(struct filter *f, FILE *dump_fp) |
| { |
| struct { |
| struct nlmsghdr nlh; |
| struct unix_diag_req r; |
| } req; |
| |
| memset(&req, 0, sizeof(req)); |
| req.nlh.nlmsg_len = sizeof(req); |
| req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY; |
| req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST; |
| req.nlh.nlmsg_seq = 123456; |
| |
| req.r.sdiag_family = AF_UNIX; |
| req.r.udiag_states = f->states; |
| req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN; |
| if (show_mem) |
| req.r.udiag_show |= UDIAG_SHOW_MEMINFO; |
| |
| return handle_netlink_request(f, dump_fp, &req.nlh, |
| sizeof(req), unix_show_sock); |
| } |
| |
| static int unix_show(struct filter *f) |
| { |
| FILE *fp; |
| char buf[256]; |
| char name[128]; |
| int newformat = 0; |
| int cnt; |
| struct unixstat *list = NULL; |
| |
| if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT") |
| && unix_show_netlink(f, NULL) == 0) |
| return 0; |
| |
| if ((fp = net_unix_open()) == NULL) |
| return -1; |
| fgets(buf, sizeof(buf)-1, fp); |
| |
| if (memcmp(buf, "Peer", 4) == 0) |
| newformat = 1; |
| cnt = 0; |
| |
| while (fgets(buf, sizeof(buf)-1, fp)) { |
| struct unixstat *u, **insp; |
| int flags; |
| |
| if (!(u = malloc(sizeof(*u)))) |
| break; |
| u->name = NULL; |
| |
| if (sscanf(buf, "%x: %x %x %x %x %x %d %s", |
| &u->peer, &u->rq, &u->wq, &flags, &u->type, |
| &u->state, &u->ino, name) < 8) |
| name[0] = 0; |
| |
| if (flags&(1<<16)) { |
| u->state = SS_LISTEN; |
| } else { |
| u->state = unix_state_map[u->state-1]; |
| if (u->type == SOCK_DGRAM && |
| u->state == SS_CLOSE && |
| u->peer) |
| u->state = SS_ESTABLISHED; |
| } |
| |
| if (!newformat) { |
| u->peer = 0; |
| u->rq = 0; |
| u->wq = 0; |
| } |
| |
| insp = &list; |
| while (*insp) { |
| if (u->type < (*insp)->type || |
| (u->type == (*insp)->type && |
| u->ino < (*insp)->ino)) |
| break; |
| insp = &(*insp)->next; |
| } |
| u->next = *insp; |
| *insp = u; |
| |
| if (name[0]) { |
| if ((u->name = malloc(strlen(name)+1)) == NULL) |
| break; |
| strcpy(u->name, name); |
| } |
| if (++cnt > MAX_UNIX_REMEMBER) { |
| unix_list_print(list, f); |
| unix_list_free(list); |
| list = NULL; |
| cnt = 0; |
| } |
| } |
| fclose(fp); |
| if (list) { |
| unix_list_print(list, f); |
| unix_list_free(list); |
| list = NULL; |
| cnt = 0; |
| } |
| |
| return 0; |
| } |
| |
| static int packet_show_sock(struct nlmsghdr *nlh, struct filter *f) |
| { |
| struct packet_diag_msg *r = NLMSG_DATA(nlh); |
| struct rtattr *tb[PACKET_DIAG_MAX+1]; |
| __u32 rq; |
| |
| parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr*)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| /* use /proc/net/packet if all info are not available */ |
| if (!tb[PACKET_DIAG_MEMINFO]) |
| return -1; |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, |
| r->pdiag_type == SOCK_RAW ? "p_raw" : "p_dgr"); |
| if (state_width) |
| printf("%-*s ", state_width, "UNCONN"); |
| |
| if (tb[PACKET_DIAG_MEMINFO]) { |
| __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]); |
| |
| rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC]; |
| } else |
| rq = 0; |
| printf("%-6d %-6d ", rq, 0); |
| |
| if (r->pdiag_num == 3) { |
| printf("%*s:", addr_width, "*"); |
| } else { |
| char tb2[16]; |
| printf("%*s:", addr_width, |
| ll_proto_n2a(htons(r->pdiag_num), tb2, sizeof(tb2))); |
| } |
| if (tb[PACKET_DIAG_INFO]) { |
| struct packet_diag_info *pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]); |
| |
| if (pinfo->pdi_index == 0) |
| printf("%-*s ", serv_width, "*"); |
| else |
| printf("%-*s ", serv_width, xll_index_to_name(pinfo->pdi_index)); |
| } else |
| printf("%-*s ", serv_width, "*"); |
| |
| printf("%*s*%-*s", |
| addr_width, "", serv_width, ""); |
| |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(r->pdiag_ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| if (show_details) { |
| __u32 uid = 0; |
| |
| if (tb[PACKET_DIAG_UID]) |
| uid = *(__u32 *)RTA_DATA(tb[PACKET_DIAG_UID]); |
| |
| printf(" ino=%u uid=%u sk=", r->pdiag_ino, uid); |
| if (r->pdiag_cookie[1] != 0) |
| printf("%08x", r->pdiag_cookie[1]); |
| printf("%08x", r->pdiag_cookie[0]); |
| } |
| |
| if (show_bpf && tb[PACKET_DIAG_FILTER]) { |
| struct sock_filter *fil = |
| RTA_DATA(tb[PACKET_DIAG_FILTER]); |
| int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) / |
| sizeof(struct sock_filter); |
| |
| printf("\n\tbpf filter (%d): ", num); |
| while (num) { |
| printf(" 0x%02x %u %u %u,", |
| fil->code, fil->jt, fil->jf, fil->k); |
| num--; |
| fil++; |
| } |
| } |
| printf("\n"); |
| return 0; |
| } |
| |
| static int packet_show_netlink(struct filter *f, FILE *dump_fp) |
| { |
| int fd; |
| struct { |
| struct nlmsghdr nlh; |
| struct packet_diag_req r; |
| } req; |
| char buf[8192]; |
| |
| if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0) |
| return -1; |
| |
| memset(&req, 0, sizeof(req)); |
| req.nlh.nlmsg_len = sizeof(req); |
| req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY; |
| req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST; |
| req.nlh.nlmsg_seq = 123456; |
| |
| req.r.sdiag_family = AF_PACKET; |
| req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO | PACKET_SHOW_FILTER; |
| |
| if (send(fd, &req, sizeof(req), 0) < 0) { |
| close(fd); |
| return -1; |
| } |
| |
| while (1) { |
| ssize_t status; |
| struct nlmsghdr *h; |
| struct sockaddr_nl nladdr; |
| socklen_t slen = sizeof(nladdr); |
| |
| status = recvfrom(fd, buf, sizeof(buf), 0, |
| (struct sockaddr *) &nladdr, &slen); |
| if (status < 0) { |
| if (errno == EINTR) |
| continue; |
| perror("OVERRUN"); |
| continue; |
| } |
| if (status == 0) { |
| fprintf(stderr, "EOF on netlink\n"); |
| goto close_it; |
| } |
| |
| if (dump_fp) |
| fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp); |
| |
| h = (struct nlmsghdr*)buf; |
| while (NLMSG_OK(h, status)) { |
| int err; |
| |
| if (h->nlmsg_seq != 123456) |
| goto skip_it; |
| |
| if (h->nlmsg_type == NLMSG_DONE) |
| goto close_it; |
| |
| if (h->nlmsg_type == NLMSG_ERROR) { |
| struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); |
| if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { |
| fprintf(stderr, "ERROR truncated\n"); |
| } else { |
| errno = -err->error; |
| if (errno != ENOENT) |
| fprintf(stderr, "UDIAG answers %d\n", errno); |
| } |
| close(fd); |
| return -1; |
| } |
| if (!dump_fp) { |
| err = packet_show_sock(h, f); |
| if (err < 0) { |
| close(fd); |
| return err; |
| } |
| } |
| |
| skip_it: |
| h = NLMSG_NEXT(h, status); |
| } |
| |
| if (status) { |
| fprintf(stderr, "!!!Remnant of size %zd\n", status); |
| exit(1); |
| } |
| } |
| |
| close_it: |
| close(fd); |
| return 0; |
| } |
| |
| |
| static int packet_show(struct filter *f) |
| { |
| FILE *fp; |
| char buf[256]; |
| int type; |
| int prot; |
| int iface; |
| int state; |
| int rq; |
| int uid; |
| int ino; |
| unsigned long long sk; |
| |
| if (!(f->states & (1<<SS_CLOSE))) |
| return 0; |
| |
| if (packet_show_netlink(f, NULL) == 0) |
| return 0; |
| |
| if ((fp = net_packet_open()) == NULL) |
| return -1; |
| fgets(buf, sizeof(buf)-1, fp); |
| |
| while (fgets(buf, sizeof(buf)-1, fp)) { |
| sscanf(buf, "%llx %*d %d %x %d %d %u %u %u", |
| &sk, |
| &type, &prot, &iface, &state, |
| &rq, &uid, &ino); |
| |
| if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB))) |
| continue; |
| if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB))) |
| continue; |
| if (f->f) { |
| struct tcpstat tst; |
| tst.local.family = AF_PACKET; |
| tst.remote.family = AF_PACKET; |
| tst.rport = 0; |
| tst.lport = iface; |
| tst.local.data[0] = prot; |
| tst.remote.data[0] = 0; |
| if (run_ssfilter(f->f, &tst) == 0) |
| continue; |
| } |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, |
| type == SOCK_RAW ? "p_raw" : "p_dgr"); |
| if (state_width) |
| printf("%-*s ", state_width, "UNCONN"); |
| printf("%-6d %-6d ", rq, 0); |
| if (prot == 3) { |
| printf("%*s:", addr_width, "*"); |
| } else { |
| char tb[16]; |
| printf("%*s:", addr_width, |
| ll_proto_n2a(htons(prot), tb, sizeof(tb))); |
| } |
| if (iface == 0) { |
| printf("%-*s ", serv_width, "*"); |
| } else { |
| printf("%-*s ", serv_width, xll_index_to_name(iface)); |
| } |
| printf("%*s*%-*s", |
| addr_width, "", serv_width, ""); |
| |
| if (show_users) { |
| char ubuf[4096]; |
| if (find_users(ino, ubuf, sizeof(ubuf)) > 0) |
| printf(" users:(%s)", ubuf); |
| } |
| if (show_details) { |
| printf(" ino=%u uid=%u sk=%llx", ino, uid, sk); |
| } |
| printf("\n"); |
| } |
| |
| return 0; |
| } |
| |
| static void netlink_show_one(struct filter *f, |
| int prot, int pid, unsigned groups, |
| int state, int dst_pid, unsigned dst_group, |
| int rq, int wq, |
| unsigned long long sk, unsigned long long cb) |
| { |
| if (f->f) { |
| struct tcpstat tst; |
| tst.local.family = AF_NETLINK; |
| tst.remote.family = AF_NETLINK; |
| tst.rport = -1; |
| tst.lport = pid; |
| tst.local.data[0] = prot; |
| tst.remote.data[0] = 0; |
| if (run_ssfilter(f->f, &tst) == 0) |
| return; |
| } |
| |
| if (netid_width) |
| printf("%-*s ", netid_width, "nl"); |
| if (state_width) |
| printf("%-*s ", state_width, "UNCONN"); |
| printf("%-6d %-6d ", rq, wq); |
| if (resolve_services && prot == 0) |
| printf("%*s:", addr_width, "rtnl"); |
| else if (resolve_services && prot == 3) |
| printf("%*s:", addr_width, "fw"); |
| else if (resolve_services && prot == 4) |
| printf("%*s:", addr_width, "tcpdiag"); |
| else |
| printf("%*d:", addr_width, prot); |
| if (pid == -1) { |
| printf("%-*s ", serv_width, "*"); |
| } else if (resolve_services) { |
| int done = 0; |
| if (!pid) { |
| done = 1; |
| printf("%-*s ", serv_width, "kernel"); |
| } else if (pid > 0) { |
| char procname[64]; |
| FILE *fp; |
| sprintf(procname, "%s/%d/stat", |
| getenv("PROC_ROOT") ? : "/proc", pid); |
| if ((fp = fopen(procname, "r")) != NULL) { |
| if (fscanf(fp, "%*d (%[^)])", procname) == 1) { |
| sprintf(procname+strlen(procname), "/%d", pid); |
| printf("%-*s ", serv_width, procname); |
| done = 1; |
| } |
| fclose(fp); |
| } |
| } |
| if (!done) |
| printf("%-*d ", serv_width, pid); |
| } else { |
| printf("%-*d ", serv_width, pid); |
| } |
| |
| if (state == NETLINK_CONNECTED) { |
| printf("%*d:%-*d", |
| addr_width, dst_group, serv_width, dst_pid); |
| } else { |
| printf("%*s*%-*s", |
| addr_width, "", serv_width, ""); |
| } |
| |
| if (show_details) { |
| printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups); |
| } |
| printf("\n"); |
| |
| return; |
| } |
| |
| static int netlink_show_sock(struct nlmsghdr *nlh, struct filter *f) |
| { |
| struct netlink_diag_msg *r = NLMSG_DATA(nlh); |
| struct rtattr *tb[NETLINK_DIAG_MAX+1]; |
| int rq = 0, wq = 0; |
| unsigned long groups = 0; |
| |
| parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr*)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS])) |
| groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]); |
| |
| if (tb[NETLINK_DIAG_MEMINFO]) { |
| const __u32 *skmeminfo; |
| skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]); |
| |
| rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC]; |
| wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC]; |
| } |
| |
| netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups, |
| r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group, |
| rq, wq, 0, 0); |
| |
|