| /* |
| * 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 <fcntl.h> |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <sys/uio.h> |
| #include <sys/sysmacros.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 <stdbool.h> |
| #include <limits.h> |
| #include <stdarg.h> |
| |
| #include "ss_util.h" |
| #include "utils.h" |
| #include "rt_names.h" |
| #include "ll_map.h" |
| #include "libnetlink.h" |
| #include "namespace.h" |
| #include "SNAPSHOT.h" |
| #include "rt_names.h" |
| #include "cg_map.h" |
| |
| #include <linux/tcp.h> |
| #include <linux/unix_diag.h> |
| #include <linux/netdevice.h> /* for MAX_ADDR_LEN */ |
| #include <linux/filter.h> |
| #include <linux/xdp_diag.h> |
| #include <linux/packet_diag.h> |
| #include <linux/netlink_diag.h> |
| #include <linux/sctp.h> |
| #include <linux/vm_sockets_diag.h> |
| #include <linux/net.h> |
| #include <linux/tipc.h> |
| #include <linux/tipc_netlink.h> |
| #include <linux/tipc_sockets_diag.h> |
| #include <linux/tls.h> |
| #include <linux/mptcp.h> |
| |
| /* AF_VSOCK/PF_VSOCK is only provided since glibc 2.18 */ |
| #ifndef PF_VSOCK |
| #define PF_VSOCK 40 |
| #endif |
| #ifndef AF_VSOCK |
| #define AF_VSOCK PF_VSOCK |
| #endif |
| |
| #define BUF_CHUNK (1024 * 1024) /* Buffer chunk allocation size */ |
| #define BUF_CHUNKS_MAX 5 /* Maximum number of allocated buffer chunks */ |
| #define LEN_ALIGN(x) (((x) + 1) & ~1) |
| |
| #if HAVE_SELINUX |
| #include <selinux/selinux.h> |
| #else |
| /* Stubs for SELinux functions */ |
| static int is_selinux_enabled(void) |
| { |
| return -1; |
| } |
| |
| static int getpidcon(pid_t pid, char **context) |
| { |
| *context = NULL; |
| return -1; |
| } |
| |
| static int getfilecon(char *path, char **context) |
| { |
| *context = NULL; |
| return -1; |
| } |
| |
| static int security_get_initial_context(char *name, char **context) |
| { |
| *context = NULL; |
| return -1; |
| } |
| #endif |
| |
| int preferred_family = AF_UNSPEC; |
| static int show_options; |
| int show_details; |
| static int show_users; |
| static int show_mem; |
| static int show_tcpinfo; |
| static int show_bpf; |
| static int show_proc_ctx; |
| static int show_sock_ctx; |
| static int show_header = 1; |
| static int follow_events; |
| static int sctp_ino; |
| static int show_tipcinfo; |
| static int show_tos; |
| static int show_cgroup; |
| int oneline; |
| |
| enum col_id { |
| COL_NETID, |
| COL_STATE, |
| COL_RECVQ, |
| COL_SENDQ, |
| COL_ADDR, |
| COL_SERV, |
| COL_RADDR, |
| COL_RSERV, |
| COL_EXT, |
| COL_PROC, |
| COL_MAX |
| }; |
| |
| enum col_align { |
| ALIGN_LEFT, |
| ALIGN_CENTER, |
| ALIGN_RIGHT |
| }; |
| |
| struct column { |
| const enum col_align align; |
| const char *header; |
| const char *ldelim; |
| int disabled; |
| int width; /* Calculated, including additional layout spacing */ |
| int max_len; /* Measured maximum field length in this column */ |
| }; |
| |
| static struct column columns[] = { |
| { ALIGN_LEFT, "Netid", "", 0, 0, 0 }, |
| { ALIGN_LEFT, "State", " ", 0, 0, 0 }, |
| { ALIGN_LEFT, "Recv-Q", " ", 0, 0, 0 }, |
| { ALIGN_LEFT, "Send-Q", " ", 0, 0, 0 }, |
| { ALIGN_RIGHT, "Local Address:", " ", 0, 0, 0 }, |
| { ALIGN_LEFT, "Port", "", 0, 0, 0 }, |
| { ALIGN_RIGHT, "Peer Address:", " ", 0, 0, 0 }, |
| { ALIGN_LEFT, "Port", "", 0, 0, 0 }, |
| { ALIGN_LEFT, "Process", "", 0, 0, 0 }, |
| { ALIGN_LEFT, "", "", 0, 0, 0 }, |
| }; |
| |
| static struct column *current_field = columns; |
| |
| /* Output buffer: chained chunks of BUF_CHUNK bytes. Each field is written to |
| * the buffer as a variable size token. A token consists of a 16 bits length |
| * field, followed by a string which is not NULL-terminated. |
| * |
| * A new chunk is allocated and linked when the current chunk doesn't have |
| * enough room to store the current token as a whole. |
| */ |
| struct buf_chunk { |
| struct buf_chunk *next; /* Next chained chunk */ |
| char *end; /* Current end of content */ |
| char data[0]; |
| }; |
| |
| struct buf_token { |
| uint16_t len; /* Data length, excluding length descriptor */ |
| char data[0]; |
| }; |
| |
| static struct { |
| struct buf_token *cur; /* Position of current token in chunk */ |
| struct buf_chunk *head; /* First chunk */ |
| struct buf_chunk *tail; /* Current chunk */ |
| int chunks; /* Number of allocated chunks */ |
| } buffer; |
| |
| static const char *TCP_PROTO = "tcp"; |
| static const char *SCTP_PROTO = "sctp"; |
| static const char *UDP_PROTO = "udp"; |
| static const char *RAW_PROTO = "raw"; |
| static const char *dg_proto; |
| |
| enum { |
| TCP_DB, |
| DCCP_DB, |
| UDP_DB, |
| RAW_DB, |
| UNIX_DG_DB, |
| UNIX_ST_DB, |
| UNIX_SQ_DB, |
| PACKET_DG_DB, |
| PACKET_R_DB, |
| NETLINK_DB, |
| SCTP_DB, |
| VSOCK_ST_DB, |
| VSOCK_DG_DB, |
| TIPC_DB, |
| XDP_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)|(1<<UNIX_SQ_DB)) |
| #define ALL_DB ((1<<MAX_DB)-1) |
| #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB)) |
| #define INET_DBM (INET_L4_DBM | (1<<RAW_DB)) |
| #define VSOCK_DBM ((1<<VSOCK_ST_DB)|(1<<VSOCK_DG_DB)) |
| |
| 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 |
| }; |
| |
| enum { |
| SCTP_STATE_CLOSED = 0, |
| SCTP_STATE_COOKIE_WAIT = 1, |
| SCTP_STATE_COOKIE_ECHOED = 2, |
| SCTP_STATE_ESTABLISHED = 3, |
| SCTP_STATE_SHUTDOWN_PENDING = 4, |
| SCTP_STATE_SHUTDOWN_SENT = 5, |
| SCTP_STATE_SHUTDOWN_RECEIVED = 6, |
| SCTP_STATE_SHUTDOWN_ACK_SENT = 7, |
| }; |
| |
| #define SS_ALL ((1 << SS_MAX) - 1) |
| #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV))) |
| #define TIPC_SS_CONN ((1<<SS_ESTABLISHED)|(1<<SS_LISTEN)|(1<<SS_CLOSE)) |
| |
| #include "ssfilter.h" |
| |
| struct filter { |
| int dbs; |
| int states; |
| uint64_t families; |
| struct ssfilter *f; |
| bool kill; |
| struct rtnl_handle *rth_for_killing; |
| }; |
| |
| #define FAMILY_MASK(family) ((uint64_t)1 << (family)) |
| |
| static const struct filter default_dbs[MAX_DB] = { |
| [TCP_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6), |
| }, |
| [DCCP_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6), |
| }, |
| [UDP_DB] = { |
| .states = (1 << SS_ESTABLISHED), |
| .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6), |
| }, |
| [RAW_DB] = { |
| .states = (1 << SS_ESTABLISHED), |
| .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6), |
| }, |
| [UNIX_DG_DB] = { |
| .states = (1 << SS_CLOSE), |
| .families = FAMILY_MASK(AF_UNIX), |
| }, |
| [UNIX_ST_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_UNIX), |
| }, |
| [UNIX_SQ_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_UNIX), |
| }, |
| [PACKET_DG_DB] = { |
| .states = (1 << SS_CLOSE), |
| .families = FAMILY_MASK(AF_PACKET), |
| }, |
| [PACKET_R_DB] = { |
| .states = (1 << SS_CLOSE), |
| .families = FAMILY_MASK(AF_PACKET), |
| }, |
| [NETLINK_DB] = { |
| .states = (1 << SS_CLOSE), |
| .families = FAMILY_MASK(AF_NETLINK), |
| }, |
| [SCTP_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6), |
| }, |
| [VSOCK_ST_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_VSOCK), |
| }, |
| [VSOCK_DG_DB] = { |
| .states = SS_CONN, |
| .families = FAMILY_MASK(AF_VSOCK), |
| }, |
| [TIPC_DB] = { |
| .states = TIPC_SS_CONN, |
| .families = FAMILY_MASK(AF_TIPC), |
| }, |
| [XDP_DB] = { |
| .states = (1 << SS_CLOSE), |
| .families = FAMILY_MASK(AF_XDP), |
| }, |
| }; |
| |
| static const struct filter default_afs[AF_MAX] = { |
| [AF_INET] = { |
| .dbs = INET_DBM, |
| .states = SS_CONN, |
| }, |
| [AF_INET6] = { |
| .dbs = INET_DBM, |
| .states = SS_CONN, |
| }, |
| [AF_UNIX] = { |
| .dbs = UNIX_DBM, |
| .states = SS_CONN, |
| }, |
| [AF_PACKET] = { |
| .dbs = PACKET_DBM, |
| .states = (1 << SS_CLOSE), |
| }, |
| [AF_NETLINK] = { |
| .dbs = (1 << NETLINK_DB), |
| .states = (1 << SS_CLOSE), |
| }, |
| [AF_VSOCK] = { |
| .dbs = VSOCK_DBM, |
| .states = SS_CONN, |
| }, |
| [AF_TIPC] = { |
| .dbs = (1 << TIPC_DB), |
| .states = TIPC_SS_CONN, |
| }, |
| [AF_XDP] = { |
| .dbs = (1 << XDP_DB), |
| .states = (1 << SS_CLOSE), |
| }, |
| }; |
| |
| static int do_default = 1; |
| static struct filter current_filter; |
| |
| static void filter_db_set(struct filter *f, int db, bool enable) |
| { |
| if (enable) { |
| f->states |= default_dbs[db].states; |
| f->dbs |= 1 << db; |
| } else { |
| f->dbs &= ~(1 << db); |
| } |
| do_default = 0; |
| } |
| |
| static int filter_db_parse(struct filter *f, const char *s) |
| { |
| const struct { |
| const char *name; |
| int dbs[MAX_DB + 1]; |
| } db_name_tbl[] = { |
| #define ENTRY(name, ...) { #name, { __VA_ARGS__, MAX_DB } } |
| ENTRY(all, UDP_DB, DCCP_DB, TCP_DB, RAW_DB, |
| UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB, |
| PACKET_R_DB, PACKET_DG_DB, NETLINK_DB, |
| SCTP_DB, VSOCK_ST_DB, VSOCK_DG_DB, XDP_DB), |
| ENTRY(inet, UDP_DB, DCCP_DB, TCP_DB, SCTP_DB, RAW_DB), |
| ENTRY(udp, UDP_DB), |
| ENTRY(dccp, DCCP_DB), |
| ENTRY(tcp, TCP_DB), |
| ENTRY(sctp, SCTP_DB), |
| ENTRY(raw, RAW_DB), |
| ENTRY(unix, UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB), |
| ENTRY(unix_stream, UNIX_ST_DB), |
| ENTRY(u_str, UNIX_ST_DB), /* alias for unix_stream */ |
| ENTRY(unix_dgram, UNIX_DG_DB), |
| ENTRY(u_dgr, UNIX_DG_DB), /* alias for unix_dgram */ |
| ENTRY(unix_seqpacket, UNIX_SQ_DB), |
| ENTRY(u_seq, UNIX_SQ_DB), /* alias for unix_seqpacket */ |
| ENTRY(packet, PACKET_R_DB, PACKET_DG_DB), |
| ENTRY(packet_raw, PACKET_R_DB), |
| ENTRY(p_raw, PACKET_R_DB), /* alias for packet_raw */ |
| ENTRY(packet_dgram, PACKET_DG_DB), |
| ENTRY(p_dgr, PACKET_DG_DB), /* alias for packet_dgram */ |
| ENTRY(netlink, NETLINK_DB), |
| ENTRY(vsock, VSOCK_ST_DB, VSOCK_DG_DB), |
| ENTRY(vsock_stream, VSOCK_ST_DB), |
| ENTRY(v_str, VSOCK_ST_DB), /* alias for vsock_stream */ |
| ENTRY(vsock_dgram, VSOCK_DG_DB), |
| ENTRY(v_dgr, VSOCK_DG_DB), /* alias for vsock_dgram */ |
| ENTRY(xdp, XDP_DB), |
| #undef ENTRY |
| }; |
| bool enable = true; |
| unsigned int i; |
| const int *dbp; |
| |
| if (s[0] == '!') { |
| enable = false; |
| s++; |
| } |
| for (i = 0; i < ARRAY_SIZE(db_name_tbl); i++) { |
| if (strcmp(s, db_name_tbl[i].name)) |
| continue; |
| for (dbp = db_name_tbl[i].dbs; *dbp != MAX_DB; dbp++) |
| filter_db_set(f, *dbp, enable); |
| return 0; |
| } |
| return -1; |
| } |
| |
| static void filter_af_set(struct filter *f, int af) |
| { |
| f->states |= default_afs[af].states; |
| f->families |= FAMILY_MASK(af); |
| do_default = 0; |
| preferred_family = af; |
| } |
| |
| static int filter_af_get(struct filter *f, int af) |
| { |
| return !!(f->families & FAMILY_MASK(af)); |
| } |
| |
| static void filter_states_set(struct filter *f, int states) |
| { |
| if (states) |
| f->states = states; |
| } |
| |
| static void filter_merge_defaults(struct filter *f) |
| { |
| int db; |
| int af; |
| |
| for (db = 0; db < MAX_DB; db++) { |
| if (!(f->dbs & (1 << db))) |
| continue; |
| |
| if (!(default_dbs[db].families & f->families)) |
| f->families |= default_dbs[db].families; |
| } |
| for (af = 0; af < AF_MAX; af++) { |
| if (!(f->families & FAMILY_MASK(af))) |
| continue; |
| |
| if (!(default_afs[af].dbs & f->dbs)) |
| f->dbs |= default_afs[af].dbs; |
| } |
| } |
| |
| 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"); |
| } |
| #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp") |
| #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6") |
| #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp") |
| #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6") |
| #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw") |
| #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6") |
| #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix") |
| #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \ |
| "net/packet") |
| #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \ |
| "net/netlink") |
| #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \ |
| "net/sockstat") |
| #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \ |
| "net/sockstat6") |
| #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp") |
| #define ephemeral_ports_open() 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; |
| char *process_ctx; |
| char *socket_ctx; |
| }; |
| |
| #define USER_ENT_HASH_SIZE 256 |
| static 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, char *process, |
| int pid, int fd, |
| char *proc_ctx, |
| char *sock_ctx) |
| { |
| struct user_ent *p, **pp; |
| |
| p = malloc(sizeof(struct user_ent)); |
| if (!p) { |
| fprintf(stderr, "ss: failed to malloc buffer\n"); |
| abort(); |
| } |
| p->next = NULL; |
| p->ino = ino; |
| p->pid = pid; |
| p->fd = fd; |
| p->process = strdup(process); |
| p->process_ctx = strdup(proc_ctx); |
| p->socket_ctx = strdup(sock_ctx); |
| |
| pp = &user_ent_hash[user_ent_hashfn(ino)]; |
| p->next = *pp; |
| *pp = p; |
| } |
| |
| static void user_ent_destroy(void) |
| { |
| struct user_ent *p, *p_next; |
| int cnt = 0; |
| |
| while (cnt != USER_ENT_HASH_SIZE) { |
| p = user_ent_hash[cnt]; |
| while (p) { |
| free(p->process); |
| free(p->process_ctx); |
| free(p->socket_ctx); |
| p_next = p->next; |
| free(p); |
| p = p_next; |
| } |
| cnt++; |
| } |
| } |
| |
| static void user_ent_hash_build(void) |
| { |
| const char *root = getenv("PROC_ROOT") ? : "/proc/"; |
| struct dirent *d; |
| char name[1024]; |
| int nameoff; |
| DIR *dir; |
| char *pid_context; |
| char *sock_context; |
| const char *no_ctx = "unavailable"; |
| static int user_ent_hash_build_init; |
| |
| /* If show_users & show_proc_ctx set only do this once */ |
| if (user_ent_hash_build_init != 0) |
| return; |
| |
| user_ent_hash_build_init = 1; |
| |
| strlcpy(name, root, sizeof(name)); |
| |
| 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]; |
| char *p; |
| int pid, pos; |
| DIR *dir1; |
| char crap; |
| |
| if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1) |
| continue; |
| |
| if (getpidcon(pid, &pid_context) != 0) |
| pid_context = strdup(no_ctx); |
| |
| snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid); |
| pos = strlen(name); |
| if ((dir1 = opendir(name)) == NULL) { |
| free(pid_context); |
| continue; |
| } |
| |
| process[0] = '\0'; |
| p = process; |
| |
| while ((d1 = readdir(dir1)) != NULL) { |
| const char *pattern = "socket:["; |
| unsigned int ino; |
| char lnk[64]; |
| int fd; |
| ssize_t link_len; |
| char tmp[1024]; |
| |
| if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1) |
| continue; |
| |
| snprintf(name+pos, sizeof(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); |
| |
| snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s", |
| root, pid, d1->d_name); |
| |
| if (getfilecon(tmp, &sock_context) <= 0) |
| sock_context = strdup(no_ctx); |
| |
| if (*p == '\0') { |
| FILE *fp; |
| |
| snprintf(tmp, sizeof(tmp), "%s/%d/stat", |
| root, pid); |
| if ((fp = fopen(tmp, "r")) != NULL) { |
| if (fscanf(fp, "%*d (%[^)])", p) < 1) |
| ; /* ignore */ |
| fclose(fp); |
| } |
| } |
| user_ent_add(ino, p, pid, fd, |
| pid_context, sock_context); |
| free(sock_context); |
| } |
| free(pid_context); |
| closedir(dir1); |
| } |
| closedir(dir); |
| } |
| |
| enum entry_types { |
| USERS, |
| PROC_CTX, |
| PROC_SOCK_CTX |
| }; |
| |
| #define ENTRY_BUF_SIZE 512 |
| static int find_entry(unsigned int ino, char **buf, int type) |
| { |
| struct user_ent *p; |
| int cnt = 0; |
| char *ptr; |
| char *new_buf; |
| int len, new_buf_len; |
| int buf_used = 0; |
| int buf_len = 0; |
| |
| if (!ino) |
| return 0; |
| |
| p = user_ent_hash[user_ent_hashfn(ino)]; |
| ptr = *buf = NULL; |
| while (p) { |
| if (p->ino != ino) |
| goto next; |
| |
| while (1) { |
| ptr = *buf + buf_used; |
| switch (type) { |
| case USERS: |
| len = snprintf(ptr, buf_len - buf_used, |
| "(\"%s\",pid=%d,fd=%d),", |
| p->process, p->pid, p->fd); |
| break; |
| case PROC_CTX: |
| len = snprintf(ptr, buf_len - buf_used, |
| "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),", |
| p->process, p->pid, |
| p->process_ctx, p->fd); |
| break; |
| case PROC_SOCK_CTX: |
| len = snprintf(ptr, buf_len - buf_used, |
| "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),", |
| p->process, p->pid, |
| p->process_ctx, p->fd, |
| p->socket_ctx); |
| break; |
| default: |
| fprintf(stderr, "ss: invalid type: %d\n", type); |
| abort(); |
| } |
| |
| if (len < 0 || len >= buf_len - buf_used) { |
| new_buf_len = buf_len + ENTRY_BUF_SIZE; |
| new_buf = realloc(*buf, new_buf_len); |
| if (!new_buf) { |
| fprintf(stderr, "ss: failed to malloc buffer\n"); |
| abort(); |
| } |
| *buf = new_buf; |
| buf_len = new_buf_len; |
| continue; |
| } else { |
| buf_used += len; |
| break; |
| } |
| } |
| cnt++; |
| next: |
| p = p->next; |
| } |
| if (buf_used) { |
| ptr = *buf + buf_used; |
| ptr[-1] = '\0'; |
| } |
| return cnt; |
| } |
| |
| static unsigned long long cookie_sk_get(const uint32_t *cookie) |
| { |
| return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0]; |
| } |
| |
| static const char *sctp_sstate_name[] = { |
| [SCTP_STATE_CLOSED] = "CLOSED", |
| [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT", |
| [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED", |
| [SCTP_STATE_ESTABLISHED] = "ESTAB", |
| [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING", |
| [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT", |
| [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED", |
| [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT", |
| }; |
| |
| static const char * const stype_nameg[] = { |
| "UNKNOWN", |
| [SOCK_STREAM] = "STREAM", |
| [SOCK_DGRAM] = "DGRAM", |
| [SOCK_RDM] = "RDM", |
| [SOCK_SEQPACKET] = "SEQPACKET", |
| }; |
| |
| struct sockstat { |
| struct sockstat *next; |
| unsigned int type; |
| uint16_t prot; |
| uint16_t raw_prot; |
| inet_prefix local; |
| inet_prefix remote; |
| int lport; |
| int rport; |
| int state; |
| int rq, wq; |
| unsigned int ino; |
| unsigned int uid; |
| int refcnt; |
| unsigned int iface; |
| unsigned long long sk; |
| char *name; |
| char *peer_name; |
| __u32 mark; |
| __u64 cgroup_id; |
| }; |
| |
| struct dctcpstat { |
| unsigned int ce_state; |
| unsigned int alpha; |
| unsigned int ab_ecn; |
| unsigned int ab_tot; |
| bool enabled; |
| }; |
| |
| struct tcpstat { |
| struct sockstat ss; |
| unsigned int timer; |
| unsigned int timeout; |
| int probes; |
| char cong_alg[16]; |
| double rto, ato, rtt, rttvar; |
| int qack, ssthresh, backoff; |
| double send_bps; |
| int snd_wscale; |
| int rcv_wscale; |
| int mss; |
| int rcv_mss; |
| int advmss; |
| unsigned int pmtu; |
| unsigned int cwnd; |
| unsigned int lastsnd; |
| unsigned int lastrcv; |
| unsigned int lastack; |
| double pacing_rate; |
| double pacing_rate_max; |
| double delivery_rate; |
| unsigned long long bytes_acked; |
| unsigned long long bytes_received; |
| unsigned int segs_out; |
| unsigned int segs_in; |
| unsigned int data_segs_out; |
| unsigned int data_segs_in; |
| unsigned int unacked; |
| unsigned int retrans; |
| unsigned int retrans_total; |
| unsigned int lost; |
| unsigned int sacked; |
| unsigned int fackets; |
| unsigned int reordering; |
| unsigned int not_sent; |
| unsigned int delivered; |
| unsigned int delivered_ce; |
| unsigned int dsack_dups; |
| unsigned int reord_seen; |
| double rcv_rtt; |
| double min_rtt; |
| int rcv_space; |
| unsigned int rcv_ssthresh; |
| unsigned long long busy_time; |
| unsigned long long rwnd_limited; |
| unsigned long long sndbuf_limited; |
| unsigned long long bytes_sent; |
| unsigned long long bytes_retrans; |
| bool has_ts_opt; |
| bool has_sack_opt; |
| bool has_ecn_opt; |
| bool has_ecnseen_opt; |
| bool has_fastopen_opt; |
| bool has_wscale_opt; |
| bool app_limited; |
| struct dctcpstat *dctcp; |
| struct tcp_bbr_info *bbr_info; |
| }; |
| |
| /* SCTP assocs share the same inode number with their parent endpoint. So if we |
| * have seen the inode number before, it must be an assoc instead of the next |
| * endpoint. */ |
| static bool is_sctp_assoc(struct sockstat *s, const char *sock_name) |
| { |
| if (strcmp(sock_name, "sctp")) |
| return false; |
| if (!sctp_ino || sctp_ino != s->ino) |
| return false; |
| return true; |
| } |
| |
| static const char *unix_netid_name(int type) |
| { |
| switch (type) { |
| case SOCK_STREAM: |
| return "u_str"; |
| case SOCK_SEQPACKET: |
| return "u_seq"; |
| case SOCK_DGRAM: |
| default: |
| return "u_dgr"; |
| } |
| } |
| |
| static const char *proto_name(int protocol) |
| { |
| switch (protocol) { |
| case 0: |
| return "raw"; |
| case IPPROTO_UDP: |
| return "udp"; |
| case IPPROTO_TCP: |
| return "tcp"; |
| case IPPROTO_SCTP: |
| return "sctp"; |
| case IPPROTO_DCCP: |
| return "dccp"; |
| case IPPROTO_ICMPV6: |
| return "icmp6"; |
| } |
| |
| return "???"; |
| } |
| |
| static const char *vsock_netid_name(int type) |
| { |
| switch (type) { |
| case SOCK_STREAM: |
| return "v_str"; |
| case SOCK_DGRAM: |
| return "v_dgr"; |
| default: |
| return "???"; |
| } |
| } |
| |
| static const char *tipc_netid_name(int type) |
| { |
| switch (type) { |
| case SOCK_STREAM: |
| return "ti_st"; |
| case SOCK_DGRAM: |
| return "ti_dg"; |
| case SOCK_RDM: |
| return "ti_rd"; |
| case SOCK_SEQPACKET: |
| return "ti_sq"; |
| default: |
| return "???"; |
| } |
| } |
| |
| /* Allocate and initialize a new buffer chunk */ |
| static struct buf_chunk *buf_chunk_new(void) |
| { |
| struct buf_chunk *new = malloc(BUF_CHUNK); |
| |
| if (!new) |
| abort(); |
| |
| new->next = NULL; |
| |
| /* This is also the last block */ |
| buffer.tail = new; |
| |
| /* Next token will be stored at the beginning of chunk data area, and |
| * its initial length is zero. |
| */ |
| buffer.cur = (struct buf_token *)new->data; |
| buffer.cur->len = 0; |
| |
| new->end = buffer.cur->data; |
| |
| buffer.chunks++; |
| |
| return new; |
| } |
| |
| /* Return available tail room in given chunk */ |
| static int buf_chunk_avail(struct buf_chunk *chunk) |
| { |
| return BUF_CHUNK - offsetof(struct buf_chunk, data) - |
| (chunk->end - chunk->data); |
| } |
| |
| /* Update end pointer and token length, link new chunk if we hit the end of the |
| * current one. Return -EAGAIN if we got a new chunk, caller has to print again. |
| */ |
| static int buf_update(int len) |
| { |
| struct buf_chunk *chunk = buffer.tail; |
| struct buf_token *t = buffer.cur; |
| |
| /* Claim success if new content fits in the current chunk, and anyway |
| * if this is the first token in the chunk: in the latter case, |
| * allocating a new chunk won't help, so we'll just cut the output. |
| */ |
| if ((len < buf_chunk_avail(chunk) && len != -1 /* glibc < 2.0.6 */) || |
| t == (struct buf_token *)chunk->data) { |
| len = min(len, buf_chunk_avail(chunk)); |
| |
| /* Total field length can't exceed 2^16 bytes, cut as needed */ |
| len = min(len, USHRT_MAX - t->len); |
| |
| chunk->end += len; |
| t->len += len; |
| return 0; |
| } |
| |
| /* Content truncated, time to allocate more */ |
| chunk->next = buf_chunk_new(); |
| |
| /* Copy current token over to new chunk, including length descriptor */ |
| memcpy(chunk->next->data, t, sizeof(t->len) + t->len); |
| chunk->next->end += t->len; |
| |
| /* Discard partially written field in old chunk */ |
| chunk->end -= t->len + sizeof(t->len); |
| |
| return -EAGAIN; |
| } |
| |
| /* Append content to buffer as part of the current field */ |
| __attribute__((format(printf, 1, 2))) |
| static void out(const char *fmt, ...) |
| { |
| struct column *f = current_field; |
| va_list args; |
| char *pos; |
| int len; |
| |
| if (f->disabled) |
| return; |
| |
| if (!buffer.head) |
| buffer.head = buf_chunk_new(); |
| |
| again: /* Append to buffer: if we have a new chunk, print again */ |
| |
| pos = buffer.cur->data + buffer.cur->len; |
| va_start(args, fmt); |
| |
| /* Limit to tail room. If we hit the limit, buf_update() will tell us */ |
| len = vsnprintf(pos, buf_chunk_avail(buffer.tail), fmt, args); |
| va_end(args); |
| |
| if (buf_update(len)) |
| goto again; |
| } |
| |
| static int print_left_spacing(struct column *f, int stored, int printed) |
| { |
| int s; |
| |
| if (!f->width || f->align == ALIGN_LEFT) |
| return 0; |
| |
| s = f->width - stored - printed; |
| if (f->align == ALIGN_CENTER) |
| /* If count of total spacing is odd, shift right by one */ |
| s = (s + 1) / 2; |
| |
| if (s > 0) |
| return printf("%*c", s, ' '); |
| |
| return 0; |
| } |
| |
| static void print_right_spacing(struct column *f, int printed) |
| { |
| int s; |
| |
| if (!f->width || f->align == ALIGN_RIGHT) |
| return; |
| |
| s = f->width - printed; |
| if (f->align == ALIGN_CENTER) |
| s /= 2; |
| |
| if (s > 0) |
| printf("%*c", s, ' '); |
| } |
| |
| /* Done with field: update buffer pointer, start new token after current one */ |
| static void field_flush(struct column *f) |
| { |
| struct buf_chunk *chunk; |
| unsigned int pad; |
| |
| if (f->disabled) |
| return; |
| |
| chunk = buffer.tail; |
| pad = buffer.cur->len % 2; |
| |
| if (buffer.cur->len > f->max_len) |
| f->max_len = buffer.cur->len; |
| |
| /* We need a new chunk if we can't store the next length descriptor. |
| * Mind the gap between end of previous token and next aligned position |
| * for length descriptor. |
| */ |
| if (buf_chunk_avail(chunk) - pad < sizeof(buffer.cur->len)) { |
| chunk->end += pad; |
| chunk->next = buf_chunk_new(); |
| return; |
| } |
| |
| buffer.cur = (struct buf_token *)(buffer.cur->data + |
| LEN_ALIGN(buffer.cur->len)); |
| buffer.cur->len = 0; |
| buffer.tail->end = buffer.cur->data; |
| } |
| |
| static int field_is_last(struct column *f) |
| { |
| return f - columns == COL_MAX - 1; |
| } |
| |
| /* Get the next available token in the buffer starting from the current token */ |
| static struct buf_token *buf_token_next(struct buf_token *cur) |
| { |
| struct buf_chunk *chunk = buffer.tail; |
| |
| /* If we reached the end of chunk contents, get token from next chunk */ |
| if (cur->data + LEN_ALIGN(cur->len) == chunk->end) { |
| buffer.tail = chunk = chunk->next; |
| return chunk ? (struct buf_token *)chunk->data : NULL; |
| } |
| |
| return (struct buf_token *)(cur->data + LEN_ALIGN(cur->len)); |
| } |
| |
| /* Free up all allocated buffer chunks */ |
| static void buf_free_all(void) |
| { |
| struct buf_chunk *tmp; |
| |
| for (buffer.tail = buffer.head; buffer.tail; ) { |
| tmp = buffer.tail; |
| buffer.tail = buffer.tail->next; |
| free(tmp); |
| } |
| buffer.head = NULL; |
| buffer.chunks = 0; |
| } |
| |
| /* Get current screen width, returns -1 if TIOCGWINSZ fails */ |
| static int render_screen_width(void) |
| { |
| int width = -1; |
| |
| if (isatty(STDOUT_FILENO)) { |
| struct winsize w; |
| |
| if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) { |
| if (w.ws_col > 0) |
| width = w.ws_col; |
| } |
| } |
| |
| return width; |
| } |
| |
| /* Calculate column width from contents length. If columns don't fit on one |
| * line, break them into the least possible amount of lines and keep them |
| * aligned across lines. Available screen space is equally spread between fields |
| * as additional spacing. |
| */ |
| static void render_calc_width(void) |
| { |
| int screen_width, first, len = 0, linecols = 0; |
| struct column *c, *eol = columns - 1; |
| bool compact_output = false; |
| |
| screen_width = render_screen_width(); |
| if (screen_width == -1) { |
| screen_width = INT_MAX; |
| compact_output = true; |
| } |
| |
| /* First pass: set width for each column to measured content length */ |
| for (first = 1, c = columns; c - columns < COL_MAX; c++) { |
| if (c->disabled) |
| continue; |
| |
| if (!first && c->max_len) |
| c->width = c->max_len + strlen(c->ldelim); |
| else |
| c->width = c->max_len; |
| |
| /* But don't exceed screen size. If we exceed the screen size |
| * for even a single field, it will just start on a line of its |
| * own and then naturally wrap. |
| */ |
| c->width = min(c->width, screen_width); |
| |
| if (c->width) |
| first = 0; |
| } |
| |
| if (compact_output) { |
| /* Compact output, skip extending columns. */ |
| return; |
| } |
| |
| /* Second pass: find out newlines and distribute available spacing */ |
| for (c = columns; c - columns < COL_MAX; c++) { |
| int pad, spacing, rem, last; |
| struct column *tmp; |
| |
| if (!c->width) |
| continue; |
| |
| linecols++; |
| len += c->width; |
| |
| for (last = 1, tmp = c + 1; tmp - columns < COL_MAX; tmp++) { |
| if (tmp->width) { |
| last = 0; |
| break; |
| } |
| } |
| |
| if (!last && len < screen_width) { |
| /* Columns fit on screen so far, nothing to do yet */ |
| continue; |
| } |
| |
| if (len == screen_width) { |
| /* Exact fit, just start with new line */ |
| goto newline; |
| } |
| |
| if (len > screen_width) { |
| /* Screen width exceeded: go back one column */ |
| len -= c->width; |
| c--; |
| linecols--; |
| } |
| |
| /* Distribute remaining space to columns on this line */ |
| pad = screen_width - len; |
| spacing = pad / linecols; |
| rem = pad % linecols; |
| for (tmp = c; tmp > eol; tmp--) { |
| if (!tmp->width) |
| continue; |
| |
| tmp->width += spacing; |
| if (rem) { |
| tmp->width++; |
| rem--; |
| } |
| } |
| |
| newline: |
| /* Line break: reset line counters, mark end-of-line */ |
| eol = c; |
| len = 0; |
| linecols = 0; |
| } |
| } |
| |
| /* Render buffered output with spacing and delimiters, then free up buffers */ |
| static void render(void) |
| { |
| struct buf_token *token; |
| int printed, line_started = 0; |
| struct column *f; |
| |
| if (!buffer.head) |
| return; |
| |
| token = (struct buf_token *)buffer.head->data; |
| |
| /* Ensure end alignment of last token, it wasn't necessarily flushed */ |
| buffer.tail->end += buffer.cur->len % 2; |
| |
| render_calc_width(); |
| |
| /* Rewind and replay */ |
| buffer.tail = buffer.head; |
| |
| f = columns; |
| while (!f->width) |
| f++; |
| |
| while (token) { |
| /* Print left delimiter only if we already started a line */ |
| if (line_started++) |
| printed = printf("%s", f->ldelim); |
| else |
| printed = 0; |
| |
| /* Print field content from token data with spacing */ |
| printed += print_left_spacing(f, token->len, printed); |
| printed += fwrite(token->data, 1, token->len, stdout); |
| print_right_spacing(f, printed); |
| |
| /* Go to next non-empty field, deal with end-of-line */ |
| do { |
| if (field_is_last(f)) { |
| printf("\n"); |
| f = columns; |
| line_started = 0; |
| } else { |
| f++; |
| } |
| } while (f->disabled); |
| |
| token = buf_token_next(token); |
| } |
| /* Deal with final end-of-line when the last non-empty field printed |
| * is not the last field. |
| */ |
| if (line_started) |
| printf("\n"); |
| |
| buf_free_all(); |
| current_field = columns; |
| } |
| |
| /* Move to next field, and render buffer if we reached the maximum number of |
| * chunks, at the last field in a line. |
| */ |
| static void field_next(void) |
| { |
| if (field_is_last(current_field) && buffer.chunks >= BUF_CHUNKS_MAX) { |
| render(); |
| return; |
| } |
| |
| field_flush(current_field); |
| if (field_is_last(current_field)) |
| current_field = columns; |
| else |
| current_field++; |
| } |
| |
| /* Walk through fields and flush them until we reach the desired one */ |
| static void field_set(enum col_id id) |
| { |
| while (id != current_field - columns) |
| field_next(); |
| } |
| |
| /* Print header for all non-empty columns */ |
| static void print_header(void) |
| { |
| while (!field_is_last(current_field)) { |
| if (!current_field->disabled) |
| out("%s", current_field->header); |
| field_next(); |
| } |
| } |
| |
| static void sock_state_print(struct sockstat *s) |
| { |
| const char *sock_name; |
| static const char * const 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", |
| }; |
| |
| switch (s->local.family) { |
| case AF_UNIX: |
| sock_name = unix_netid_name(s->type); |
| break; |
| case AF_INET: |
| case AF_INET6: |
| sock_name = proto_name(s->type); |
| break; |
| case AF_PACKET: |
| sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr"; |
| break; |
| case AF_NETLINK: |
| sock_name = "nl"; |
| break; |
| case AF_TIPC: |
| sock_name = tipc_netid_name(s->type); |
| break; |
| case AF_VSOCK: |
| sock_name = vsock_netid_name(s->type); |
| break; |
| case AF_XDP: |
| sock_name = "xdp"; |
| break; |
| default: |
| sock_name = "unknown"; |
| } |
| |
| if (is_sctp_assoc(s, sock_name)) { |
| field_set(COL_STATE); /* Empty Netid field */ |
| out("`- %s", sctp_sstate_name[s->state]); |
| } else { |
| field_set(COL_NETID); |
| out("%s", sock_name); |
| field_set(COL_STATE); |
| out("%s", sstate_name[s->state]); |
| } |
| |
| field_set(COL_RECVQ); |
| out("%-6d", s->rq); |
| field_set(COL_SENDQ); |
| out("%-6d", s->wq); |
| field_set(COL_ADDR); |
| } |
| |
| static void sock_details_print(struct sockstat *s) |
| { |
| if (s->uid) |
| out(" uid:%u", s->uid); |
| |
| out(" ino:%u", s->ino); |
| out(" sk:%llx", s->sk); |
| |
| if (s->mark) |
| out(" fwmark:0x%x", s->mark); |
| |
| if (s->cgroup_id) |
| out(" cgroup:%s", cg_id_to_path(s->cgroup_id)); |
| } |
| |
| static void sock_addr_print(const char *addr, char *delim, const char *port, |
| const char *ifname) |
| { |
| if (ifname) |
| out("%s" "%%" "%s%s", addr, ifname, delim); |
| else |
| out("%s%s", addr, delim); |
| |
| field_next(); |
| out("%s", port); |
| field_next(); |
| } |
| |
| static const char *print_ms_timer(unsigned int timeout) |
| { |
| static char buf[64]; |
| int secs, msecs, minutes; |
| |
| 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; |
| } |
| |
| struct scache { |
| struct scache *next; |
| int port; |
| char *name; |
| const char *proto; |
| }; |
| |
| static 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) |
| return; |
| |
| if (!fgets(buf, sizeof(buf), fp)) { |
| pclose(fp); |
| return; |
| } |
| while (fgets(buf, sizeof(buf), fp) != NULL) { |
| unsigned int progn, port; |
| char proto[128], prog[128] = "rpc."; |
| struct scache *c; |
| |
| if (sscanf(buf, "%u %*d %s %u %s", |
| &progn, proto, &port, prog+4) != 4) |
| continue; |
| |
| if (!(c = malloc(sizeof(*c)))) |
| continue; |
| |
| c->port = port; |
| 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 if (strcmp(proto, SCTP_PROTO) == 0) |
| c->proto = SCTP_PROTO; |
| else |
| c->proto = NULL; |
| c->next = rlist; |
| rlist = c; |
| } |
| pclose(fp); |
| } |
| |
| /* 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) |
| { |
| static int min = 0, max; |
| |
| if (!min) { |
| FILE *f = ephemeral_ports_open(); |
| |
| if (!f || fscanf(f, "%d %d", &min, &max) < 2) { |
| min = 1024; |
| max = 4999; |
| } |
| if (f) |
| fclose(f); |
| } |
| return port >= min && 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; |
| } |
| |
| #define SCACHE_BUCKETS 1024 |
| static struct scache *cache_htab[SCACHE_BUCKETS]; |
| |
| static const char *resolve_service(int port) |
| { |
| static char buf[128]; |
| struct scache *c; |
| const char *res; |
| int hash; |
| |
| if (port == 0) { |
| buf[0] = '*'; |
| buf[1] = 0; |
| return buf; |
| } |
| |
| if (numeric) |
| goto do_numeric; |
| |
| if (dg_proto == RAW_PROTO) |
| return inet_proto_n2a(port, buf, sizeof(buf)); |
| |
| |
| hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS; |
| |
| for (c = cache_htab[hash]; c; c = c->next) { |
| if (c->port == port && c->proto == dg_proto) |
| goto do_cache; |
| } |
| |
| c = malloc(sizeof(*c)); |
| if (!c) |
| goto do_numeric; |
| res = __resolve_service(port); |
| c->port = port; |
| c->name = res ? strdup(res) : NULL; |
| c->proto = dg_proto; |
| c->next = cache_htab[hash]; |
| cache_htab[hash] = c; |
| |
| do_cache: |
| if (c->name) |
| return c->name; |
| |
| do_numeric: |
| sprintf(buf, "%u", port); |
| return buf; |
| } |
| |
| static void inet_addr_print(const inet_prefix *a, int port, |
| unsigned int ifindex, bool v6only) |
| { |
| char buf[1024]; |
| const char *ap = buf; |
| const char *ifname = NULL; |
| |
| if (a->family == AF_INET) { |
| ap = format_host(AF_INET, 4, a->data); |
| } else { |
| if (!v6only && |
| !memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) { |
| buf[0] = '*'; |
| buf[1] = 0; |
| } else { |
| ap = format_host(a->family, 16, a->data); |
| |
| /* Numeric IPv6 addresses should be bracketed */ |
| if (strchr(ap, ':')) { |
| snprintf(buf, sizeof(buf), |
| "[%s]", ap); |
| ap = buf; |
| } |
| } |
| } |
| |
| if (ifindex) |
| ifname = ll_index_to_name(ifindex); |
| |
| sock_addr_print(ap, ":", resolve_service(port), ifname); |
| } |
| |
| struct aafilter { |
| inet_prefix addr; |
| int port; |
| unsigned int iface; |
| __u32 mark; |
| __u32 mask; |
| __u64 cgroup_id; |
| 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 sockstat *s) |
| { |
| switch (f->type) { |
| case SSF_S_AUTO: |
| { |
| 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] == 0; |
| if (s->local.family == AF_NETLINK) |
| return s->lport < 0; |
| if (s->local.family == AF_VSOCK) |
| return s->lport > 1023; |
| |
| return is_ephemeral(s->lport); |
| } |
| 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; |
| } |
| case SSF_DEVCOND: |
| { |
| struct aafilter *a = (void *)f->pred; |
| |
| return s->iface == a->iface; |
| } |
| case SSF_MARKMASK: |
| { |
| struct aafilter *a = (void *)f->pred; |
| |
| return (s->mark & a->mask) == a->mark; |
| } |
| case SSF_CGROUPCOND: |
| { |
| struct aafilter *a = (void *)f->pred; |
| |
| return s->cgroup_id == a->cgroup_id; |
| } |
| /* 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 = NULL, *a2 = NULL, *a; |
| int l1, l2; |
| |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| l2 = ssfilter_bytecompile(f->post, &a2); |
| if (!l1 || !l2) { |
| free(a1); |
| free(a2); |
| return 0; |
| } |
| 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 = NULL, *a2 = NULL, *a; |
| int l1, l2; |
| |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| l2 = ssfilter_bytecompile(f->post, &a2); |
| if (!l1 || !l2) { |
| free(a1); |
| free(a2); |
| return 0; |
| } |
| 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 = NULL, *a; |
| int l1; |
| |
| l1 = ssfilter_bytecompile(f->pred, &a1); |
| if (!l1) { |
| free(a1); |
| return 0; |
| } |
| 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; |
| } |
| case SSF_DEVCOND: |
| { |
| /* bytecompile for SSF_DEVCOND not supported yet */ |
| return 0; |
| } |
| case SSF_MARKMASK: |
| { |
| struct aafilter *a = (void *)f->pred; |
| struct instr { |
| struct inet_diag_bc_op op; |
| struct inet_diag_markcond cond; |
| }; |
| int inslen = sizeof(struct instr); |
| |
| if (!(*bytecode = malloc(inslen))) abort(); |
| ((struct instr *)*bytecode)[0] = (struct instr) { |
| { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 }, |
| { a->mark, a->mask}, |
| }; |
| |
| return inslen; |
| } |
| case SSF_CGROUPCOND: |
| { |
| struct aafilter *a = (void *)f->pred; |
| struct instr { |
| struct inet_diag_bc_op op; |
| __u64 cgroup_id; |
| } __attribute__((packed)); |
| int inslen = sizeof(struct instr); |
| |
| if (!(*bytecode = malloc(inslen))) abort(); |
| ((struct instr *)*bytecode)[0] = (struct instr) { |
| { INET_DIAG_BC_CGROUP_COND, inslen, inslen + 4 }, |
| a->cgroup_id, |
| }; |
| |
| return inslen; |
| } |
| 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; |
| 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; |
| |
| static void xll_init(void) |
| { |
| struct rtnl_handle rth; |
| |
| if (rtnl_open(&rth, 0) < 0) |
| exit(1); |
| |
| 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_devcond(char *name) |
| { |
| struct aafilter a = { .iface = 0 }; |
| struct aafilter *res; |
| |
| a.iface = xll_name_to_index(name); |
| if (a.iface == 0) { |
| char *end; |
| unsigned long n; |
| |
| n = strtoul(name, &end, 0); |
| if (!end || end == name || *end || n > UINT_MAX) |
| return NULL; |
| |
| a.iface = n; |
| } |
| |
| res = malloc(sizeof(*res)); |
| *res = a; |
| |
| return res; |
| } |
| |
| static void vsock_set_inet_prefix(inet_prefix *a, __u32 cid) |
| { |
| *a = (inet_prefix){ |
| .bytelen = sizeof(cid), |
| .family = AF_VSOCK, |
| }; |
| memcpy(a->data, &cid, sizeof(cid)); |
| } |
| |
| void *parse_hostcond(char *addr, bool is_port) |
| { |
| char *port = NULL; |
| struct aafilter a = { .port = -1 }; |
| struct aafilter *res; |
| int fam = preferred_family; |
| struct filter *f = ¤t_filter; |
| |
| 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)); |
| fam = AF_UNIX; |
| 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); |
| } |
| fam = AF_PACKET; |
| 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 (nl_proto_a2n(&a.addr.data[0], addr) == -1) |
| return NULL; |
| } |
| fam = AF_NETLINK; |
| goto out; |
| } |
| |
| if (fam == AF_VSOCK || strncmp(addr, "vsock:", 6) == 0) { |
| __u32 cid = ~(__u32)0; |
| |
| a.addr.family = AF_VSOCK; |
| if (strncmp(addr, "vsock:", 6) == 0) |
| addr += 6; |
| |
| if (is_port) |
| port = addr; |
| else { |
| port = strchr(addr, ':'); |
| if (port) { |
| *port = '\0'; |
| port++; |
| } |
| } |
| |
| if (port && strcmp(port, "*") && |
| get_u32((__u32 *)&a.port, port, 0)) |
| return NULL; |
| |
| if (addr[0] && strcmp(addr, "*")) { |
| a.addr.bitlen = 32; |
| if (get_u32(&cid, addr, 0)) |
| return NULL; |
| } |
| vsock_set_inet_prefix(&a.addr, cid); |
| fam = AF_VSOCK; |
| goto out; |
| } |
| |
| if (fam == AF_INET || !strncmp(addr, "inet:", 5)) { |
| fam = AF_INET; |
| if (!strncmp(addr, "inet:", 5)) |
| addr += 5; |
| } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) { |
| fam = AF_INET6; |
| if (!strncmp(addr, "inet6:", 6)) |
| addr += 6; |
| } |
| |
| /* 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 (is_port) |
| port = addr; |
| |
| if (port && *port) { |
| if (*port == ':') |
| *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 (!is_port && *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: |
| if (fam != AF_UNSPEC) { |
| int states = f->states; |
| f->families = 0; |
| filter_af_set(f, fam); |
| filter_states_set(f, states); |
| } |
| |
| res = malloc(sizeof(*res)); |
| if (res) |
| memcpy(res, &a, sizeof(a)); |
| return res; |
| } |
| |
| void *parse_markmask(const char *markmask) |
| { |
| struct aafilter a, *res; |
| |
| if (strchr(markmask, '/')) { |
| if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2) |
| return NULL; |
| } else { |
| a.mask = 0xffffffff; |
| if (sscanf(markmask, "%i", &a.mark) != 1) |
| return NULL; |
| } |
| |
| res = malloc(sizeof(*res)); |
| if (res) |
| memcpy(res, &a, sizeof(a)); |
| return res; |
| } |
| |
| void *parse_cgroupcond(const char *path) |
| { |
| struct aafilter *res; |
| __u64 id; |
| |
| id = get_cgroup2_id(path); |
| if (!id) |
| return NULL; |
| |
| res = malloc(sizeof(*res)); |
| if (res) |
| res->cgroup_id = id; |
| |
| return res; |
| } |
| |
| static void proc_ctx_print(struct sockstat *s) |
| { |
| char *buf; |
| |
| if (show_proc_ctx || show_sock_ctx) { |
| if (find_entry(s->ino, &buf, |
| (show_proc_ctx & show_sock_ctx) ? |
| PROC_SOCK_CTX : PROC_CTX) > 0) { |
| out(" users:(%s)", buf); |
| free(buf); |
| } |
| } else if (show_users) { |
| if (find_entry(s->ino, &buf, USERS) > 0) { |
| out(" users:(%s)", buf); |
| free(buf); |
| } |
| } |
| } |
| |
| static void inet_stats_print(struct sockstat *s, bool v6only) |
| { |
| sock_state_print(s); |
| |
| inet_addr_print(&s->local, s->lport, s->iface, v6only); |
| inet_addr_print(&s->remote, s->rport, 0, v6only); |
| |
| proc_ctx_print(s); |
| } |
| |
| static int proc_parse_inet_addr(char *loc, char *rem, int family, struct |
| sockstat * s) |
| { |
| 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; |
| return 0; |
| } 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; |
| return 0; |
| } |
| return -1; |
| } |
| |
| static int proc_inet_split_line(char *line, char **loc, char **rem, char **data) |
| { |
| 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; |
| return 0; |
| } |
| |
| /* |
| * Display bandwidth in standard units |
| * See: https://en.wikipedia.org/wiki/Data-rate_units |
| * bw is in bits per second |
| */ |
| static char *sprint_bw(char *buf, double bw) |
| { |
| if (numeric) |
| sprintf(buf, "%.0f", bw); |
| else if (bw >= 1e12) |
| sprintf(buf, "%.3gT", bw / 1e12); |
| else if (bw >= 1e9) |
| sprintf(buf, "%.3gG", bw / 1e9); |
| else if (bw >= 1e6) |
| sprintf(buf, "%.3gM", bw / 1e6); |
| else if (bw >= 1e3) |
| sprintf(buf, "%.3gk", bw / 1e3); |
| else |
| sprintf(buf, "%g", bw); |
| |
| return buf; |
| } |
| |
| static void sctp_stats_print(struct sctp_info *s) |
| { |
| if (s->sctpi_tag) |
| out(" tag:%x", s->sctpi_tag); |
| if (s->sctpi_state) |
| out(" state:%s", sctp_sstate_name[s->sctpi_state]); |
| if (s->sctpi_rwnd) |
| out(" rwnd:%d", s->sctpi_rwnd); |
| if (s->sctpi_unackdata) |
| out(" unackdata:%d", s->sctpi_unackdata); |
| if (s->sctpi_penddata) |
| out(" penddata:%d", s->sctpi_penddata); |
| if (s->sctpi_instrms) |
| out(" instrms:%d", s->sctpi_instrms); |
| if (s->sctpi_outstrms) |
| out(" outstrms:%d", s->sctpi_outstrms); |
| if (s->sctpi_inqueue) |
| out(" inqueue:%d", s->sctpi_inqueue); |
| if (s->sctpi_outqueue) |
| out(" outqueue:%d", s->sctpi_outqueue); |
| if (s->sctpi_overall_error) |
| out(" overerr:%d", s->sctpi_overall_error); |
| if (s->sctpi_max_burst) |
| out(" maxburst:%d", s->sctpi_max_burst); |
| if (s->sctpi_maxseg) |
| out(" maxseg:%d", s->sctpi_maxseg); |
| if (s->sctpi_peer_rwnd) |
| out(" prwnd:%d", s->sctpi_peer_rwnd); |
| if (s->sctpi_peer_tag) |
| out(" ptag:%x", s->sctpi_peer_tag); |
| if (s->sctpi_peer_capable) |
| out(" pcapable:%d", s->sctpi_peer_capable); |
| if (s->sctpi_peer_sack) |
| out(" psack:%d", s->sctpi_peer_sack); |
| if (s->sctpi_s_autoclose) |
| out(" autoclose:%d", s->sctpi_s_autoclose); |
| if (s->sctpi_s_adaptation_ind) |
| out(" adapind:%d", s->sctpi_s_adaptation_ind); |
| if (s->sctpi_s_pd_point) |
| out(" pdpoint:%d", s->sctpi_s_pd_point); |
| if (s->sctpi_s_nodelay) |
| out(" nodelay:%d", s->sctpi_s_nodelay); |
| if (s->sctpi_s_disable_fragments) |
| out(" nofrag:%d", s->sctpi_s_disable_fragments); |
| if (s->sctpi_s_v4mapped) |
| out(" v4mapped:%d", s->sctpi_s_v4mapped); |
| if (s->sctpi_s_frag_interleave) |
| out(" fraginl:%d", s->sctpi_s_frag_interleave); |
| } |
| |
| static void tcp_stats_print(struct tcpstat *s) |
| { |
| char b1[64]; |
| |
| if (s->has_ts_opt) |
| out(" ts"); |
| if (s->has_sack_opt) |
| out(" sack"); |
| if (s->has_ecn_opt) |
| out(" ecn"); |
| if (s->has_ecnseen_opt) |
| out(" ecnseen"); |
| if (s->has_fastopen_opt) |
| out(" fastopen"); |
| if (s->cong_alg[0]) |
| out(" %s", s->cong_alg); |
| if (s->has_wscale_opt) |
| out(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale); |
| if (s->rto) |
| out(" rto:%g", s->rto); |
| if (s->backoff) |
| out(" backoff:%u", s->backoff); |
| if (s->rtt) |
| out(" rtt:%g/%g", s->rtt, s->rttvar); |
| if (s->ato) |
| out(" ato:%g", s->ato); |
| |
| if (s->qack) |
| out(" qack:%d", s->qack); |
| if (s->qack & 1) |
| out(" bidir"); |
| |
| if (s->mss) |
| out(" mss:%d", s->mss); |
| if (s->pmtu) |
| out(" pmtu:%u", s->pmtu); |
| if (s->rcv_mss) |
| out(" rcvmss:%d", s->rcv_mss); |
| if (s->advmss) |
| out(" advmss:%d", s->advmss); |
| if (s->cwnd) |
| out(" cwnd:%u", s->cwnd); |
| if (s->ssthresh) |
| out(" ssthresh:%d", s->ssthresh); |
| |
| if (s->bytes_sent) |
| out(" bytes_sent:%llu", s->bytes_sent); |
| if (s->bytes_retrans) |
| out(" bytes_retrans:%llu", s->bytes_retrans); |
| if (s->bytes_acked) |
| out(" bytes_acked:%llu", s->bytes_acked); |
| if (s->bytes_received) |
| out(" bytes_received:%llu", s->bytes_received); |
| if (s->segs_out) |
| out(" segs_out:%u", s->segs_out); |
| if (s->segs_in) |
| out(" segs_in:%u", s->segs_in); |
| if (s->data_segs_out) |
| out(" data_segs_out:%u", s->data_segs_out); |
| if (s->data_segs_in) |
| out(" data_segs_in:%u", s->data_segs_in); |
| |
| if (s->dctcp && s->dctcp->enabled) { |
| struct dctcpstat *dctcp = s->dctcp; |
| |
| out(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)", |
| dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn, |
| dctcp->ab_tot); |
| } else if (s->dctcp) { |
| out(" dctcp:fallback_mode"); |
| } |
| |
| if (s->bbr_info) { |
| __u64 bw; |
| |
| bw = s->bbr_info->bbr_bw_hi; |
| bw <<= 32; |
| bw |= s->bbr_info->bbr_bw_lo; |
| |
| out(" bbr:(bw:%sbps,mrtt:%g", |
| sprint_bw(b1, bw * 8.0), |
| (double)s->bbr_info->bbr_min_rtt / 1000.0); |
| if (s->bbr_info->bbr_pacing_gain) |
| out(",pacing_gain:%g", |
| (double)s->bbr_info->bbr_pacing_gain / 256.0); |
| if (s->bbr_info->bbr_cwnd_gain) |
| out(",cwnd_gain:%g", |
| (double)s->bbr_info->bbr_cwnd_gain / 256.0); |
| out(")"); |
| } |
| |
| if (s->send_bps) |
| out(" send %sbps", sprint_bw(b1, s->send_bps)); |
| if (s->lastsnd) |
| out(" lastsnd:%u", s->lastsnd); |
| if (s->lastrcv) |
| out(" lastrcv:%u", s->lastrcv); |
| if (s->lastack) |
| out(" lastack:%u", s->lastack); |
| |
| if (s->pacing_rate) { |
| out(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate)); |
| if (s->pacing_rate_max) |
| out("/%sbps", sprint_bw(b1, s->pacing_rate_max)); |
| } |
| |
| if (s->delivery_rate) |
| out(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate)); |
| if (s->delivered) |
| out(" delivered:%u", s->delivered); |
| if (s->delivered_ce) |
| out(" delivered_ce:%u", s->delivered_ce); |
| if (s->app_limited) |
| out(" app_limited"); |
| |
| if (s->busy_time) { |
| out(" busy:%llums", s->busy_time / 1000); |
| if (s->rwnd_limited) |
| out(" rwnd_limited:%llums(%.1f%%)", |
| s->rwnd_limited / 1000, |
| 100.0 * s->rwnd_limited / s->busy_time); |
| if (s->sndbuf_limited) |
| out(" sndbuf_limited:%llums(%.1f%%)", |
| s->sndbuf_limited / 1000, |
| 100.0 * s->sndbuf_limited / s->busy_time); |
| } |
| |
| if (s->unacked) |
| out(" unacked:%u", s->unacked); |
| if (s->retrans || s->retrans_total) |
| out(" retrans:%u/%u", s->retrans, s->retrans_total); |
| if (s->lost) |
| out(" lost:%u", s->lost); |
| if (s->sacked && s->ss.state != SS_LISTEN) |
| out(" sacked:%u", s->sacked); |
| if (s->dsack_dups) |
| out(" dsack_dups:%u", s->dsack_dups); |
| if (s->fackets) |
| out(" fackets:%u", s->fackets); |
| if (s->reordering != 3) |
| out(" reordering:%d", s->reordering); |
| if (s->reord_seen) |
| out(" reord_seen:%d", s->reord_seen); |
| if (s->rcv_rtt) |
| out(" rcv_rtt:%g", s->rcv_rtt); |
| if (s->rcv_space) |
| out(" rcv_space:%d", s->rcv_space); |
| if (s->rcv_ssthresh) |
| out(" rcv_ssthresh:%u", s->rcv_ssthresh); |
| if (s->not_sent) |
| out(" notsent:%u", s->not_sent); |
| if (s->min_rtt) |
| out(" minrtt:%g", s->min_rtt); |
| } |
| |
| static void tcp_timer_print(struct tcpstat *s) |
| { |
| static const char * const tmr_name[] = { |
| "off", |
| "on", |
| "keepalive", |
| "timewait", |
| "persist", |
| "unknown" |
| }; |
| |
| if (s->timer) { |
| if (s->timer > 4) |
| s->timer = 5; |
| out(" timer:(%s,%s,%d)", |
| tmr_name[s->timer], |
| print_ms_timer(s->timeout), |
| s->retrans); |
| } |
| } |
| |
| static void sctp_timer_print(struct tcpstat *s) |
| { |
| if (s->timer) |
| out(" timer:(T3_RTX,%s,%d)", |
| print_ms_timer(s->timeout), s->retrans); |
| } |
| |
| static int tcp_show_line(char *line, const struct filter *f, int family) |
| { |
| int rto = 0, ato = 0; |
| struct tcpstat s = {}; |
| char *loc, *rem, *data; |
| char opt[256]; |
| int n; |
| int hz = get_user_hz(); |
| |
| if (proc_inet_split_line(line, &loc, &rem, &data)) |
| return -1; |
| |
| int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); |
| |
| if (!(f->states & (1 << state))) |
| return 0; |
| |
| proc_parse_inet_addr(loc, rem, family, &s.ss); |
| |
| if (f->f && run_ssfilter(f->f, &s.ss) == 0) |
| return 0; |
| |
| opt[0] = 0; |
| n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n", |
| &s.ss.state, &s.ss.wq, &s.ss.rq, |
| &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes, |
| &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd, |
| &s.ssthresh, opt); |
| |
| if (n < 17) |
| opt[0] = 0; |
| |
| if (n < 12) { |
| rto = 0; |
| s.cwnd = 2; |
| s.ssthresh = -1; |
| ato = s.qack = 0; |
| } |
| |
| s.retrans = s.timer != 1 ? s.probes : s.retrans; |
| s.timeout = (s.timeout * 1000 + hz - 1) / hz; |
| s.ato = (double)ato / hz; |
| s.qack /= 2; |
| s.rto = (double)rto; |
| s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh; |
| s.rto = s.rto != 3 * hz ? s.rto / hz : 0; |
| s.ss.type = IPPROTO_TCP; |
| |
| inet_stats_print(&s.ss, false); |
| |
| if (show_options) |
| tcp_timer_print(&s); |
| |
| if (show_details) { |
| sock_details_print(&s.ss); |
| if (opt[0]) |
| out(" opt:\"%s\"", opt); |
| } |
| |
| if (show_tcpinfo) |
| tcp_stats_print(&s); |
| |
| 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 void print_skmeminfo(struct rtattr *tb[], int attrtype) |
| { |
| const __u32 *skmeminfo; |
| |
| if (!tb[attrtype]) { |
| if (attrtype == INET_DIAG_SKMEMINFO) { |
| if (!tb[INET_DIAG_MEMINFO]) |
| return; |
| |
| const struct inet_diag_meminfo *minfo = |
| RTA_DATA(tb[INET_DIAG_MEMINFO]); |
| |
| out(" mem:(r%u,w%u,f%u,t%u)", |
| minfo->idiag_rmem, |
| minfo->idiag_wmem, |
| minfo->idiag_fmem, |
| minfo->idiag_tmem); |
| } |
| return; |
| } |
| |
| skmeminfo = RTA_DATA(tb[attrtype]); |
| |
| out(" 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)) |
| out(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]); |
| |
| if (RTA_PAYLOAD(tb[attrtype]) >= |
| (SK_MEMINFO_DROPS + 1) * sizeof(__u32)) |
| out(",d%u", skmeminfo[SK_MEMINFO_DROPS]); |
| |
| out(")"); |
| } |
| |
| static void print_md5sig(struct tcp_diag_md5sig *sig) |
| { |
| out("%s/%d=", |
| format_host(sig->tcpm_family, |
| sig->tcpm_family == AF_INET6 ? 16 : 4, |
| &sig->tcpm_addr), |
| sig->tcpm_prefixlen); |
| print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,"); |
| } |
| |
| static void tcp_tls_version(struct rtattr *attr) |
| { |
| u_int16_t val; |
| |
| if (!attr) |
| return; |
| val = rta_getattr_u16(attr); |
| |
| switch (val) { |
| case TLS_1_2_VERSION: |
| out(" version: 1.2"); |
| break; |
| case TLS_1_3_VERSION: |
| out(" version: 1.3"); |
| break; |
| default: |
| out(" version: unknown(%hu)", val); |
| break; |
| } |
| } |
| |
| static void tcp_tls_cipher(struct rtattr *attr) |
| { |
| u_int16_t val; |
| |
| if (!attr) |
| return; |
| val = rta_getattr_u16(attr); |
| |
| switch (val) { |
| case TLS_CIPHER_AES_GCM_128: |
| out(" cipher: aes-gcm-128"); |
| break; |
| case TLS_CIPHER_AES_GCM_256: |
| out(" cipher: aes-gcm-256"); |
| break; |
| } |
| } |
| |
| static void tcp_tls_conf(const char *name, struct rtattr *attr) |
| { |
| u_int16_t val; |
| |
| if (!attr) |
| return; |
| val = rta_getattr_u16(attr); |
| |
| switch (val) { |
| case TLS_CONF_BASE: |
| out(" %s: none", name); |
| break; |
| case TLS_CONF_SW: |
| out(" %s: sw", name); |
| break; |
| case TLS_CONF_HW: |
| out(" %s: hw", name); |
| break; |
| case TLS_CONF_HW_RECORD: |
| out(" %s: hw-record", name); |
| break; |
| default: |
| out(" %s: unknown(%hu)", name, val); |
| break; |
| } |
| } |
| |
| static void mptcp_subflow_info(struct rtattr *tb[]) |
| { |
| u_int32_t flags = 0; |
| |
| if (tb[MPTCP_SUBFLOW_ATTR_FLAGS]) { |
| char caps[32 + 1] = { 0 }, *cap = &caps[0]; |
| |
| flags = rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_FLAGS]); |
| |
| if (flags & MPTCP_SUBFLOW_FLAG_MCAP_REM) |
| *cap++ = 'M'; |
| if (flags & MPTCP_SUBFLOW_FLAG_MCAP_LOC) |
| *cap++ = 'm'; |
| if (flags & MPTCP_SUBFLOW_FLAG_JOIN_REM) |
| *cap++ = 'J'; |
| if (flags & MPTCP_SUBFLOW_FLAG_JOIN_LOC) |
| *cap++ = 'j'; |
| if (flags & MPTCP_SUBFLOW_FLAG_BKUP_REM) |
| *cap++ = 'B'; |
| if (flags & MPTCP_SUBFLOW_FLAG_BKUP_LOC) |
| *cap++ = 'b'; |
| if (flags & MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED) |
| *cap++ = 'e'; |
| if (flags & MPTCP_SUBFLOW_FLAG_CONNECTED) |
| *cap++ = 'c'; |
| if (flags & MPTCP_SUBFLOW_FLAG_MAPVALID) |
| *cap++ = 'v'; |
| if (flags) |
| out(" flags:%s", caps); |
| } |
| if (tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM] && |
| tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC] && |
| tb[MPTCP_SUBFLOW_ATTR_ID_REM] && |
| tb[MPTCP_SUBFLOW_ATTR_ID_LOC]) |
| out(" token:%04x(id:%hhu)/%04x(id:%hhu)", |
| rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM]), |
| rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_REM]), |
| rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC]), |
| rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_LOC])); |
| if (tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ]) |
| out(" seq:%llx", |
| rta_getattr_u64(tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ])); |
| if (tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ]) |
| out(" sfseq:%x", |
| rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ])); |
| if (tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET]) |
| out(" ssnoff:%x", |
| rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET])); |
| if (tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN]) |
| out(" maplen:%x", |
| rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN])); |
| } |
| |
| #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt)) |
| |
| static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r, |
| struct rtattr *tb[]) |
| { |
| double rtt = 0; |
| struct tcpstat s = {}; |
| |
| s.ss.state = r->idiag_state; |
| |
| print_skmeminfo(tb, INET_DIAG_SKMEMINFO); |
| |
| 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)); |
| memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len); |
| memset((char *)info + len, 0, sizeof(*info) - len); |
| } else |
| info = RTA_DATA(tb[INET_DIAG_INFO]); |
| |
| if (show_options) { |
| s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS); |
| s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK); |
| s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN); |
| s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN); |
| s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA); |
| } |
| |
| if (tb[INET_DIAG_CONG]) |
| strncpy(s.cong_alg, |
| rta_getattr_str(tb[INET_DIAG_CONG]), |
| sizeof(s.cong_alg) - 1); |
| |
| if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) { |
| s.has_wscale_opt = true; |
| s.snd_wscale = info->tcpi_snd_wscale; |
| s.rcv_wscale = info->tcpi_rcv_wscale; |
| } |
| |
| if (info->tcpi_rto && info->tcpi_rto != 3000000) |
| s.rto = (double)info->tcpi_rto / 1000; |
| |
| s.backoff = info->tcpi_backoff; |
| s.rtt = (double)info->tcpi_rtt / 1000; |
| s.rttvar = (double)info->tcpi_rttvar / 1000; |
| s.ato = (double)info->tcpi_ato / 1000; |
| s.mss = info->tcpi_snd_mss; |
| s.rcv_mss = info->tcpi_rcv_mss; |
| s.advmss = info->tcpi_advmss; |
| s.rcv_space = info->tcpi_rcv_space; |
| s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000; |
| s.lastsnd = info->tcpi_last_data_sent; |
| s.lastrcv = info->tcpi_last_data_recv; |
| s.lastack = info->tcpi_last_ack_recv; |
| s.unacked = info->tcpi_unacked; |
| s.retrans = info->tcpi_retrans; |
| s.retrans_total = info->tcpi_total_retrans; |
| s.lost = info->tcpi_lost; |
| s.sacked = info->tcpi_sacked; |
| s.fackets = info->tcpi_fackets; |
| s.reordering = info->tcpi_reordering; |
| s.rcv_ssthresh = info->tcpi_rcv_ssthresh; |
| s.cwnd = info->tcpi_snd_cwnd; |
| s.pmtu = info->tcpi_pmtu; |
| |
| if (info->tcpi_snd_ssthresh < 0xFFFF) |
| s.ssthresh = 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 (tb[INET_DIAG_DCTCPINFO]) { |
| struct dctcpstat *dctcp = malloc(sizeof(struct |
| dctcpstat)); |
| |
| const struct tcp_dctcp_info *dinfo |
| = RTA_DATA(tb[INET_DIAG_DCTCPINFO]); |
| |
| dctcp->enabled = !!dinfo->dctcp_enabled; |
| dctcp->ce_state = dinfo->dctcp_ce_state; |
| dctcp->alpha = dinfo->dctcp_alpha; |
| dctcp->ab_ecn = dinfo->dctcp_ab_ecn; |
| dctcp->ab_tot = dinfo->dctcp_ab_tot; |
| s.dctcp = dctcp; |
| } |
| |
| if (tb[INET_DIAG_BBRINFO]) { |
| const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]); |
| int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]), |
| sizeof(*s.bbr_info)); |
| |
| s.bbr_info = calloc(1, sizeof(*s.bbr_info)); |
| if (s.bbr_info && bbr_info) |
| memcpy(s.bbr_info, bbr_info, len); |
| } |
| |
| if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) { |
| s.send_bps = (double) info->tcpi_snd_cwnd * |
| (double)info->tcpi_snd_mss * 8000000. / rtt; |
| } |
| |
| if (info->tcpi_pacing_rate && |
| info->tcpi_pacing_rate != ~0ULL) { |
| s.pacing_rate = info->tcpi_pacing_rate * 8.; |
| |
| if (info->tcpi_max_pacing_rate && |
| info->tcpi_max_pacing_rate != ~0ULL) |
| s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.; |
| } |
| s.bytes_acked = info->tcpi_bytes_acked; |
| s.bytes_received = info->tcpi_bytes_received; |
| s.segs_out = info->tcpi_segs_out; |
| s.segs_in = info->tcpi_segs_in; |
| s.data_segs_out = info->tcpi_data_segs_out; |
| s.data_segs_in = info->tcpi_data_segs_in; |
| s.not_sent = info->tcpi_notsent_bytes; |
| if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U) |
| s.min_rtt = (double) info->tcpi_min_rtt / 1000; |
| s.delivery_rate = info->tcpi_delivery_rate * 8.; |
| s.app_limited = info->tcpi_delivery_rate_app_limited; |
| s.busy_time = info->tcpi_busy_time; |
| s.rwnd_limited = info->tcpi_rwnd_limited; |
| s.sndbuf_limited = info->tcpi_sndbuf_limited; |
| s.delivered = info->tcpi_delivered; |
| s.delivered_ce = info->tcpi_delivered_ce; |
| s.dsack_dups = info->tcpi_dsack_dups; |
| s.reord_seen = info->tcpi_reord_seen; |
| s.bytes_sent = info->tcpi_bytes_sent; |
| s.bytes_retrans = info->tcpi_bytes_retrans; |
| tcp_stats_print(&s); |
| free(s.dctcp); |
| free(s.bbr_info); |
| } |
| if (tb[INET_DIAG_MD5SIG]) { |
| struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]); |
| int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]); |
| |
| out(" md5keys:"); |
| print_md5sig(sig++); |
| for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) { |
| out(","); |
| print_md5sig(sig++); |
| } |
| } |
| if (tb[INET_DIAG_ULP_INFO]) { |
| struct rtattr *ulpinfo[INET_ULP_INFO_MAX + 1] = { 0 }; |
| |
| parse_rtattr_nested(ulpinfo, INET_ULP_INFO_MAX, |
| tb[INET_DIAG_ULP_INFO]); |
| |
| if (ulpinfo[INET_ULP_INFO_NAME]) |
| out(" tcp-ulp-%s", |
| rta_getattr_str(ulpinfo[INET_ULP_INFO_NAME])); |
| |
| if (ulpinfo[INET_ULP_INFO_TLS]) { |
| struct rtattr *tlsinfo[TLS_INFO_MAX + 1] = { 0 }; |
| |
| parse_rtattr_nested(tlsinfo, TLS_INFO_MAX, |
| ulpinfo[INET_ULP_INFO_TLS]); |
| |
| tcp_tls_version(tlsinfo[TLS_INFO_VERSION]); |
| tcp_tls_cipher(tlsinfo[TLS_INFO_CIPHER]); |
| tcp_tls_conf("rxconf", tlsinfo[TLS_INFO_RXCONF]); |
| tcp_tls_conf("txconf", tlsinfo[TLS_INFO_TXCONF]); |
| } |
| if (ulpinfo[INET_ULP_INFO_MPTCP]) { |
| struct rtattr *sfinfo[MPTCP_SUBFLOW_ATTR_MAX + 1] = |
| { 0 }; |
| |
| parse_rtattr_nested(sfinfo, MPTCP_SUBFLOW_ATTR_MAX, |
| ulpinfo[INET_ULP_INFO_MPTCP]); |
| mptcp_subflow_info(sfinfo); |
| } |
| } |
| } |
| |
| static const char *format_host_sa(struct sockaddr_storage *sa) |
| { |
| union { |
| struct sockaddr_in sin; |
| struct sockaddr_in6 sin6; |
| } *saddr = (void *)sa; |
| |
| switch (sa->ss_family) { |
| case AF_INET: |
| return format_host(AF_INET, 4, &saddr->sin.sin_addr); |
| case AF_INET6: |
| return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr); |
| default: |
| return ""; |
| } |
| } |
| |
| static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r, |
| struct rtattr *tb[]) |
| { |
| struct sockaddr_storage *sa; |
| int len; |
| |
| print_skmeminfo(tb, INET_DIAG_SKMEMINFO); |
| |
| if (tb[INET_DIAG_LOCALS]) { |
| len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]); |
| sa = RTA_DATA(tb[INET_DIAG_LOCALS]); |
| |
| out(" locals:%s", format_host_sa(sa)); |
| for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa)) |
| out(",%s", format_host_sa(sa)); |
| |
| } |
| if (tb[INET_DIAG_PEERS]) { |
| len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]); |
| sa = RTA_DATA(tb[INET_DIAG_PEERS]); |
| |
| out(" peers:%s", format_host_sa(sa)); |
| for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa)) |
| out(",%s", format_host_sa(sa)); |
| } |
| if (tb[INET_DIAG_INFO]) { |
| struct sctp_info *info; |
| len = RTA_PAYLOAD(tb[INET_DIAG_INFO]); |
| |
| /* workaround for older kernels with less fields */ |
| if (len < sizeof(*info)) { |
| info = alloca(sizeof(*info)); |
| memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len); |
| memset((char *)info + len, 0, sizeof(*info) - len); |
| } else |
| info = RTA_DATA(tb[INET_DIAG_INFO]); |
| |
| sctp_stats_print(info); |
| } |
| } |
| |
| static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s) |
| { |
| struct rtattr *tb[INET_DIAG_MAX+1]; |
| struct inet_diag_msg *r = NLMSG_DATA(nlh); |
| |
| 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); |
| s->wq = r->idiag_wqueue; |
| s->rq = r->idiag_rqueue; |
| s->ino = r->idiag_inode; |
| s->uid = r->idiag_uid; |
| s->iface = r->id.idiag_if; |
| s->sk = cookie_sk_get(&r->id.idiag_cookie[0]); |
| |
| s->mark = 0; |
| if (tb[INET_DIAG_MARK]) |
| s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]); |
| s->cgroup_id = 0; |
| if (tb[INET_DIAG_CGROUP_ID]) |
| s->cgroup_id = rta_getattr_u64(tb[INET_DIAG_CGROUP_ID]); |
| if (tb[INET_DIAG_PROTOCOL]) |
| s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]); |
| else |
| s->raw_prot = 0; |
| |
| 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); |
| } |
| |
| static int inet_show_sock(struct nlmsghdr *nlh, |
| struct sockstat *s) |
| { |
| struct rtattr *tb[INET_DIAG_MAX+1]; |
| struct inet_diag_msg *r = NLMSG_DATA(nlh); |
| unsigned char v6only = 0; |
| |
| parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| if (tb[INET_DIAG_PROTOCOL]) |
| s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]); |
| |
| if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) |
| v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]); |
| |
| inet_stats_print(s, v6only); |
| |
| if (show_options) { |
| struct tcpstat t = {}; |
| |
| t.timer = r->idiag_timer; |
| t.timeout = r->idiag_expires; |
| t.retrans = r->idiag_retrans; |
| if (s->type == IPPROTO_SCTP) |
| sctp_timer_print(&t); |
| else |
| tcp_timer_print(&t); |
| } |
| |
| if (show_details) { |
| sock_details_print(s); |
| if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) |
| out(" v6only:%u", v6only); |
| |
| if (tb[INET_DIAG_SHUTDOWN]) { |
| unsigned char mask; |
| |
| mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]); |
| out(" %c-%c", |
| mask & 1 ? '-' : '<', mask & 2 ? '-' : '>'); |
| } |
| } |
| |
| if (show_tos) { |
| if (tb[INET_DIAG_TOS]) |
| out(" tos:%#x", rta_getattr_u8(tb[INET_DIAG_TOS])); |
| if (tb[INET_DIAG_TCLASS]) |
| out(" tclass:%#x", rta_getattr_u8(tb[INET_DIAG_TCLASS])); |
| if (tb[INET_DIAG_CLASS_ID]) |
| out(" class_id:%#x", rta_getattr_u32(tb[INET_DIAG_CLASS_ID])); |
| } |
| |
| if (show_cgroup) { |
| if (tb[INET_DIAG_CGROUP_ID]) |
| out(" cgroup:%s", cg_id_to_path(rta_getattr_u64(tb[INET_DIAG_CGROUP_ID]))); |
| } |
| |
| if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) { |
| if (!oneline) |
| out("\n\t"); |
| if (s->type == IPPROTO_SCTP) |
| sctp_show_info(nlh, r, tb); |
| else |
| tcp_show_info(nlh, r, tb); |
| } |
| sctp_ino = s->ino; |
| |
| return 0; |
| } |
| |
| static int tcpdiag_send(int fd, int protocol, struct filter *f) |
| { |
| struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK }; |
| struct { |
| struct nlmsghdr nlh; |
| struct inet_diag_req r; |
| } req = { |
| .nlh.nlmsg_len = sizeof(req), |
| .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST, |
| .nlh.nlmsg_seq = MAGIC_SEQ, |
| .r.idiag_family = AF_INET, |
| .r.idiag_states = f->states, |
| }; |
| char *bc = NULL; |
| int bclen; |
| struct msghdr msg; |
| struct rtattr rta; |
| struct iovec iov[3]; |
| int iovlen = 1; |
| |
| if (protocol == IPPROTO_UDP) |
| return -1; |
| |
| if (protocol == IPPROTO_TCP) |
| req.nlh.nlmsg_type = TCPDIAG_GETSOCK; |
| else |
| req.nlh.nlmsg_type = DCCPDIAG_GETSOCK; |
| 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)); |
| } |
| |
| if (show_tos) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_TOS-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_TCLASS-1)); |
| } |
| |
| iov[0] = (struct iovec){ |
| .iov_base = &req, |
| .iov_len = sizeof(req) |
| }; |
| if (f->f) { |
| bclen = ssfilter_bytecompile(f->f, &bc); |
| if (bclen) { |
| 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); |
| iovlen = 3; |
| } |
| } |
| |
| msg = (struct msghdr) { |
| .msg_name = (void *)&nladdr, |
| .msg_namelen = sizeof(nladdr), |
| .msg_iov = iov, |
| .msg_iovlen = iovlen, |
| }; |
| |
| 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 = { .nl_family = AF_NETLINK }; |
| DIAG_REQUEST(req, struct inet_diag_req_v2 r); |
| char *bc = NULL; |
| int bclen; |
| struct msghdr msg; |
| struct rtattr rta; |
| struct iovec iov[3]; |
| int iovlen = 1; |
| |
| if (family == PF_UNSPEC) |
| return tcpdiag_send(fd, protocol, f); |
| |
| 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)); |
| } |
| |
| if (show_tos) { |
| req.r.idiag_ext |= (1<<(INET_DIAG_TOS-1)); |
| req.r.idiag_ext |= (1<<(INET_DIAG_TCLASS-1)); |
| } |
| |
| iov[0] = (struct iovec){ |
| .iov_base = &req, |
| .iov_len = sizeof(req) |
| }; |
| if (f->f) { |
| bclen = ssfilter_bytecompile(f->f, &bc); |
| if (bclen) { |
| 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); |
| iovlen = 3; |
| } |
| } |
| |
| msg = (struct msghdr) { |
| .msg_name = (void *)&nladdr, |
| .msg_namelen = sizeof(nladdr), |
| .msg_iov = iov, |
| .msg_iovlen = iovlen, |
| }; |
| |
| if (sendmsg(fd, &msg, 0) < 0) { |
| close(fd); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| struct inet_diag_arg { |
| struct filter *f; |
| int protocol; |
| struct rtnl_handle *rth; |
| }; |
| |
| static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s) |
| { |
| struct inet_diag_msg *d = NLMSG_DATA(h); |
| struct inet_diag_arg *diag_arg = arg; |
| struct rtnl_handle *rth = diag_arg->rth; |
| |
| DIAG_REQUEST(req, struct inet_diag_req_v2 r); |
| |
| req.nlh.nlmsg_type = SOCK_DESTROY; |
| req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
| req.nlh.nlmsg_seq = ++rth->seq; |
| req.r.sdiag_family = d->idiag_family; |
| req.r.sdiag_protocol = diag_arg->protocol; |
| req.r.id = d->id; |
| |
| if (diag_arg->protocol == IPPROTO_RAW) { |
| struct inet_diag_req_raw *raw = (void *)&req.r; |
| |
| BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw)); |
| raw->sdiag_raw_protocol = s->raw_prot; |
| } |
| |
| return rtnl_talk(rth, &req.nlh, NULL); |
| } |
| |
| static int show_one_inet_sock(struct nlmsghdr *h, void *arg) |
| { |
| int err; |
| struct inet_diag_arg *diag_arg = arg; |
| struct inet_diag_msg *r = NLMSG_DATA(h); |
| struct sockstat s = {}; |
| |
| if (!(diag_arg->f->families & FAMILY_MASK(r->idiag_family))) |
| return 0; |
| |
| parse_diag_msg(h, &s); |
| s.type = diag_arg->protocol; |
| |
| if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0) |
| return 0; |
| |
| if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) { |
| if (errno == EOPNOTSUPP || errno == ENOENT) { |
| /* Socket can't be closed, or is already closed. */ |
| return 0; |
| } else { |
| perror("SOCK_DESTROY answers"); |
| return -1; |
| } |
| } |
| |
| err = inet_show_sock(h, &s); |
| if (err < 0) |
| return err; |
| |
| return 0; |
| } |
| |
| static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol) |
| { |
| int err = 0; |
| struct rtnl_handle rth, rth2; |
| int family = PF_INET; |
| struct inet_diag_arg arg = { .f = f, .protocol = protocol }; |
| |
| if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG)) |
| return -1; |
| |
| if (f->kill) { |
| if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) { |
| rtnl_close(&rth); |
| return -1; |
| } |
| arg.rth = &rth2; |
| } |
| |
| rth.dump = MAGIC_SEQ; |
| rth.dump_fp = dump_fp; |
| if (preferred_family == PF_INET6) |
| family = PF_INET6; |
| |
| again: |
| if ((err = sockdiag_send(family, rth.fd, protocol, f))) |
| goto Exit; |
| |
| if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) { |
| if (family != PF_UNSPEC) { |
| family = PF_UNSPEC; |
| goto again; |
| } |
| goto Exit; |
| } |
| if (family == PF_INET && preferred_family != PF_INET) { |
| family = PF_INET6; |
| goto again; |
| } |
| |
| Exit: |
| rtnl_close(&rth); |
| if (arg.rth) |
| rtnl_close(arg.rth); |
| return err; |
| } |
| |
| static int tcp_show_netlink_file(struct filter *f) |
| { |
| FILE *fp; |
| char buf[16384]; |
| int err = -1; |
| |
| if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) { |
| perror("fopen($TCPDIAG_FILE)"); |
| return err; |
| } |
| |
| while (1) { |
| int err2; |
| size_t status, nitems; |
| struct nlmsghdr *h = (struct nlmsghdr *)buf; |
| struct sockstat s = {}; |
| |
| status = fread(buf, 1, sizeof(*h), fp); |
| if (status != sizeof(*h)) { |
| if (ferror(fp)) |
| perror("Reading header from $TCPDIAG_FILE"); |
| if (feof(fp)) |
| fprintf(stderr, "Unexpected EOF reading $TCPDIAG_FILE"); |
| break; |
| } |
| |
| nitems = NLMSG_ALIGN(h->nlmsg_len - sizeof(*h)); |
| status = fread(h+1, 1, nitems, fp); |
| |
| if (status != nitems) { |
| if (ferror(fp)) |
| perror("Reading $TCPDIAG_FILE"); |
| if (feof(fp)) |
| fprintf(stderr, "Unexpected EOF reading $TCPDIAG_FILE"); |
| break; |
| } |
| |
| /* The only legal exit point */ |
| if (h->nlmsg_type == NLMSG_DONE) { |
| err = 0; |
| break; |
| } |
| |
| 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"); |
| } |
| break; |
| } |
| |
| parse_diag_msg(h, &s); |
| s.type = IPPROTO_TCP; |
| |
| if (f && f->f && run_ssfilter(f->f, &s) == 0) |
| continue; |
| |
| err2 = inet_show_sock(h, &s); |
| if (err2 < 0) { |
| err = err2; |
| break; |
| } |
| } |
| |
| fclose(fp); |
| return err; |
| } |
| |
| static int tcp_show(struct filter *f) |
| { |
| FILE *fp = NULL; |
| char *buf = NULL; |
| int bufsize = 1024*1024; |
| |
| if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6)) |
| return 0; |
| |
| 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, IPPROTO_TCP) == 0) |
| return 0; |
| |
| /* Sigh... We have to parse /proc/net/tcp... */ |
| while (bufsize >= 64*1024) { |
| if ((buf = malloc(bufsize)) != NULL) |
| break; |
| bufsize /= 2; |
| } |
| if (buf == NULL) { |
| errno = ENOMEM; |
| return -1; |
| } |
| |
| if (f->families & FAMILY_MASK(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 & FAMILY_MASK(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; |
| |
| free(buf); |
| if (fp) |
| fclose(fp); |
| errno = saved_errno; |
| return -1; |
| } while (0); |
| } |
| |
| static int dccp_show(struct filter *f) |
| { |
| if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6)) |
| return 0; |
| |
| if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT") |
| && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0) |
| return 0; |
| |
| return 0; |
| } |
| |
| static int sctp_show(struct filter *f) |
| { |
| if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6)) |
| return 0; |
| |
| if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT") |
| && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0) |
| return 0; |
| |
| return 0; |
| } |
| |
| static int dgram_show_line(char *line, const struct filter *f, int family) |
| { |
| struct sockstat s = {}; |
| char *loc, *rem, *data; |
| char opt[256]; |
| int n; |
| |
| if (proc_inet_split_line(line, &loc, &rem, &data)) |
| return -1; |
| |
| int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); |
| |
| if (!(f->states & (1 << state))) |
| return 0; |
| |
| proc_parse_inet_addr(loc, rem, family, &s); |
| |
| 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; |
| |
| s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0; |
| inet_stats_print(&s, false); |
| |
| if (show_details && opt[0]) |
| out(" opt:\"%s\"", opt); |
| |
| return 0; |
| } |
| |
| static int udp_show(struct filter *f) |
| { |
| FILE *fp = NULL; |
| |
| if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6)) |
| return 0; |
| |
| dg_proto = UDP_PROTO; |
| |
| if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT") |
| && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0) |
| return 0; |
| |
| if (f->families&FAMILY_MASK(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&FAMILY_MASK(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; |
| |
| if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6)) |
| return 0; |
| |
| dg_proto = RAW_PROTO; |
| |
| if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") && |
| inet_show_netlink(f, NULL, IPPROTO_RAW) == 0) |
| return 0; |
| |
| if (f->families&FAMILY_MASK(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&FAMILY_MASK(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); |
| } |
| |
| #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat)) |
| |
| static void unix_list_drop_first(struct sockstat **list) |
| { |
| struct sockstat *s = *list; |
| |
| (*list) = (*list)->next; |
| free(s->name); |
| free(s); |
| } |
| |
| static bool unix_type_skip(struct sockstat *s, struct filter *f) |
| { |
| if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB))) |
| return true; |
| if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB))) |
| return true; |
| if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB))) |
| return true; |
| return false; |
| } |
| |
| static void unix_stats_print(struct sockstat *s, struct filter *f) |
| { |
| char port_name[30] = {}; |
| |
| sock_state_print(s); |
| |
| sock_addr_print(s->name ?: "*", " ", |
| int_to_str(s->lport, port_name), NULL); |
| sock_addr_print(s->peer_name ?: "*", " ", |
| int_to_str(s->rport, port_name), NULL); |
| |
| proc_ctx_print(s); |
| } |
| |
| static int unix_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct filter *f = (struct filter *)arg; |
| struct unix_diag_msg *r = NLMSG_DATA(nlh); |
| struct rtattr *tb[UNIX_DIAG_MAX+1]; |
| char name[128]; |
| struct sockstat stat = { .name = "*", .peer_name = "*" }; |
| |
| parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| |
| stat.type = r->udiag_type; |
| stat.state = r->udiag_state; |
| stat.ino = stat.lport = r->udiag_ino; |
| stat.local.family = stat.remote.family = AF_UNIX; |
| |
| if (unix_type_skip(&stat, f)) |
| return 0; |
| |
| if (tb[UNIX_DIAG_RQLEN]) { |
| struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]); |
| |
| stat.rq = rql->udiag_rqueue; |
| stat.wq = rql->udiag_wqueue; |
| } |
| 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') { |
| int i; |
| for (i = 0; i < len; i++) |
| if (name[i] == '\0') |
| name[i] = '@'; |
| } |
| stat.name = &name[0]; |
| memcpy(stat.local.data, &stat.name, sizeof(stat.name)); |
| } |
| if (tb[UNIX_DIAG_PEER]) |
| stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]); |
| |
| if (f->f && run_ssfilter(f->f, &stat) == 0) |
| return 0; |
| |
| unix_stats_print(&stat, f); |
| |
| if (show_mem) |
| print_skmeminfo(tb, UNIX_DIAG_MEMINFO); |
| if (show_details) { |
| if (tb[UNIX_DIAG_SHUTDOWN]) { |
| unsigned char mask; |
| |
| mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]); |
| out(" %c-%c", |
| mask & 1 ? '-' : '<', mask & 2 ? '-' : '>'); |
| } |
| if (tb[UNIX_DIAG_VFS]) { |
| struct unix_diag_vfs *uv = RTA_DATA(tb[UNIX_DIAG_VFS]); |
| |
| out(" ino:%u dev:%u/%u", uv->udiag_vfs_ino, major(uv->udiag_vfs_dev), |
| minor(uv->udiag_vfs_dev)); |
| } |
| if (tb[UNIX_DIAG_ICONS]) { |
| int len = RTA_PAYLOAD(tb[UNIX_DIAG_ICONS]); |
| __u32 *peers = RTA_DATA(tb[UNIX_DIAG_ICONS]); |
| int i; |
| |
| out(" peers:"); |
| for (i = 0; i < len / sizeof(__u32); i++) |
| out(" %u", peers[i]); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int handle_netlink_request(struct filter *f, struct nlmsghdr *req, |
| size_t size, rtnl_filter_t show_one_sock) |
| { |
| int ret = -1; |
| struct rtnl_handle rth; |
| |
| if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG)) |
| return -1; |
| |
| rth.dump = MAGIC_SEQ; |
| |
| if (rtnl_send(&rth, req, size) < 0) |
| goto Exit; |
| |
| if (rtnl_dump_filter(&rth, show_one_sock, f)) |
| goto Exit; |
| |
| ret = 0; |
| Exit: |
| rtnl_close(&rth); |
| return ret; |
| } |
| |
| static int unix_show_netlink(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct unix_diag_req r); |
| |
| 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; |
| if (show_details) |
| req.r.udiag_show |= UDIAG_SHOW_VFS | UDIAG_SHOW_ICONS; |
| |
| return handle_netlink_request(f, &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 sockstat *list = NULL; |
| const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT, |
| SS_ESTABLISHED, SS_CLOSING }; |
| |
| if (!filter_af_get(f, AF_UNIX)) |
| return 0; |
| |
| if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT") |
| && unix_show_netlink(f) == 0) |
| return 0; |
| |
| if ((fp = net_unix_open()) == NULL) |
| return -1; |
| if (!fgets(buf, sizeof(buf), fp)) { |
| fclose(fp); |
| return -1; |
| } |
| |
| if (memcmp(buf, "Peer", 4) == 0) |
| newformat = 1; |
| cnt = 0; |
| |
| while (fgets(buf, sizeof(buf), fp)) { |
| struct sockstat *u, **insp; |
| int flags; |
| |
| if (!(u = calloc(1, sizeof(*u)))) |
| break; |
| |
| if (sscanf(buf, "%x: %x %x %x %x %x %d %s", |
| &u->rport, &u->rq, &u->wq, &flags, &u->type, |
| &u->state, &u->ino, name) < 8) |
| name[0] = 0; |
| |
| u->lport = u->ino; |
| u->local.family = u->remote.family = AF_UNIX; |
| |
| if (flags & (1 << 16)) { |
| u->state = SS_LISTEN; |
| } else if (u->state > 0 && |
| u->state <= ARRAY_SIZE(unix_state_map)) { |
| u->state = unix_state_map[u->state-1]; |
| if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport) |
| u->state = SS_ESTABLISHED; |
| } |
| if (unix_type_skip(u, f) || |
| !(f->states & (1 << u->state))) { |
| free(u); |
| continue; |
| } |
| |
| if (!newformat) { |
| u->rport = 0; |
| u->rq = 0; |
| u->wq = 0; |
| } |
| |
| if (name[0]) { |
| u->name = strdup(name); |
| if (!u->name) { |
| free(u); |
| break; |
| } |
| } |
| |
| if (u->rport) { |
| struct sockstat *p; |
| |
| for (p = list; p; p = p->next) { |
| if (u->rport == p->lport) |
| break; |
| } |
| if (!p) |
| u->peer_name = "?"; |
| else |
| u->peer_name = p->name ? : "*"; |
| } |
| |
| if (f->f) { |
| struct sockstat st = { |
| .local.family = AF_UNIX, |
| .remote.family = AF_UNIX, |
| }; |
| |
| memcpy(st.local.data, &u->name, sizeof(u->name)); |
| /* when parsing the old format rport is set to 0 and |
| * therefore peer_name remains NULL |
| */ |
| if (u->peer_name && strcmp(u->peer_name, "*")) |
| memcpy(st.remote.data, &u->peer_name, |
| sizeof(u->peer_name)); |
| if (run_ssfilter(f->f, &st) == 0) { |
| free(u->name); |
| free(u); |
| continue; |
| } |
| } |
| |
| 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 (++cnt > MAX_UNIX_REMEMBER) { |
| while (list) { |
| unix_stats_print(list, f); |
| unix_list_drop_first(&list); |
| } |
| cnt = 0; |
| } |
| } |
| fclose(fp); |
| while (list) { |
| unix_stats_print(list, f); |
| unix_list_drop_first(&list); |
| } |
| |
| return 0; |
| } |
| |
| static int packet_stats_print(struct sockstat *s, const struct filter *f) |
| { |
| const char *addr, *port; |
| char ll_name[16]; |
| |
| s->local.family = s->remote.family = AF_PACKET; |
| |
| if (f->f) { |
| s->local.data[0] = s->prot; |
| if (run_ssfilter(f->f, s) == 0) |
| return 1; |
| } |
| |
| sock_state_print(s); |
| |
| if (s->prot == 3) |
| addr = "*"; |
| else |
| addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name)); |
| |
| if (s->iface == 0) |
| port = "*"; |
| else |
| port = xll_index_to_name(s->iface); |
| |
| sock_addr_print(addr, ":", port, NULL); |
| sock_addr_print("", "*", "", NULL); |
| |
| proc_ctx_print(s); |
| |
| if (show_details) |
| sock_details_print(s); |
| |
| return 0; |
| } |
| |
| static void packet_show_ring(struct packet_diag_ring *ring) |
| { |
| out("blk_size:%d", ring->pdr_block_size); |
| out(",blk_nr:%d", ring->pdr_block_nr); |
| out(",frm_size:%d", ring->pdr_frame_size); |
| out(",frm_nr:%d", ring->pdr_frame_nr); |
| out(",tmo:%d", ring->pdr_retire_tmo); |
| out(",features:0x%x", ring->pdr_features); |
| } |
| |
| static int packet_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| const struct filter *f = arg; |
| struct packet_diag_msg *r = NLMSG_DATA(nlh); |
| struct packet_diag_info *pinfo = NULL; |
| struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL; |
| struct rtattr *tb[PACKET_DIAG_MAX+1]; |
| struct sockstat stat = {}; |
| uint32_t fanout = 0; |
| bool has_fanout = false; |
| |
| 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; |
| |
| stat.type = r->pdiag_type; |
| stat.prot = r->pdiag_num; |
| stat.ino = r->pdiag_ino; |
| stat.state = SS_CLOSE; |
| stat.sk = cookie_sk_get(&r->pdiag_cookie[0]); |
| |
| if (tb[PACKET_DIAG_MEMINFO]) { |
| __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]); |
| |
| stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC]; |
| } |
| |
| if (tb[PACKET_DIAG_INFO]) { |
| pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]); |
| stat.lport = stat.iface = pinfo->pdi_index; |
| } |
| |
| if (tb[PACKET_DIAG_UID]) |
| stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]); |
| |
| if (tb[PACKET_DIAG_RX_RING]) |
| ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]); |
| |
| if (tb[PACKET_DIAG_TX_RING]) |
| ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]); |
| |
| if (tb[PACKET_DIAG_FANOUT]) { |
| has_fanout = true; |
| fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]); |
| } |
| |
| if (packet_stats_print(&stat, f)) |
| return 0; |
| |
| if (show_details) { |
| if (pinfo) { |
| if (oneline) |
| out(" ver:%d", pinfo->pdi_version); |
| else |
| out("\n\tver:%d", pinfo->pdi_version); |
| out(" cpy_thresh:%d", pinfo->pdi_copy_thresh); |
| out(" flags( "); |
| if (pinfo->pdi_flags & PDI_RUNNING) |
| out("running"); |
| if (pinfo->pdi_flags & PDI_AUXDATA) |
| out(" auxdata"); |
| if (pinfo->pdi_flags & PDI_ORIGDEV) |
| out(" origdev"); |
| if (pinfo->pdi_flags & PDI_VNETHDR) |
| out(" vnethdr"); |
| if (pinfo->pdi_flags & PDI_LOSS) |
| out(" loss"); |
| if (!pinfo->pdi_flags) |
| out("0"); |
| out(" )"); |
| } |
| if (ring_rx) { |
| if (oneline) |
| out(" ring_rx("); |
| else |
| out("\n\tring_rx("); |
| packet_show_ring(ring_rx); |
| out(")"); |
| } |
| if (ring_tx) { |
| if (oneline) |
| out(" ring_tx("); |
| else |
| out("\n\tring_tx("); |
| packet_show_ring(ring_tx); |
| out(")"); |
| } |
| if (has_fanout) { |
| uint16_t type = (fanout >> 16) & 0xffff; |
| |
| if (oneline) |
| out(" fanout("); |
| else |
| out("\n\tfanout("); |
| out("id:%d,", fanout & 0xffff); |
| out("type:"); |
| |
| if (type == 0) |
| out("hash"); |
| else if (type == 1) |
| out("lb"); |
| else if (type == 2) |
| out("cpu"); |
| else if (type == 3) |
| out("roll"); |
| else if (type == 4) |
| out("random"); |
| else if (type == 5) |
| out("qm"); |
| else |
| out("0x%x", type); |
| |
| out(")"); |
| } |
| } |
| |
| 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); |
| |
| if (oneline) |
| out(" bpf filter (%d): ", num); |
| else |
| out("\n\tbpf filter (%d): ", num); |
| while (num) { |
| out(" 0x%02x %u %u %u,", |
| fil->code, fil->jt, fil->jf, fil->k); |
| num--; |
| fil++; |
| } |
| } |
| |
| if (show_mem) |
| print_skmeminfo(tb, PACKET_DIAG_MEMINFO); |
| return 0; |
| } |
| |
| static int packet_show_netlink(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct packet_diag_req r); |
| |
| req.r.sdiag_family = AF_PACKET; |
| req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO | |
| PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT; |
| |
| return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock); |
| } |
| |
| static int packet_show_line(char *buf, const struct filter *f, int fam) |
| { |
| unsigned long long sk; |
| struct sockstat stat = {}; |
| int type, prot, iface, state, rq, uid, ino; |
| |
| sscanf(buf, "%llx %*d %d %x %d %d %u %u %u", |
| &sk, |
| &type, &prot, &iface, &state, |
| &rq, &uid, &ino); |
| |
| if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB))) |
| return 0; |
| if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB))) |
| return 0; |
| |
| stat.type = type; |
| stat.prot = prot; |
| stat.lport = stat.iface = iface; |
| stat.state = state; |
| stat.rq = rq; |
| stat.uid = uid; |
| stat.ino = ino; |
| stat.state = SS_CLOSE; |
| |
| if (packet_stats_print(&stat, f)) |
| return 0; |
| |
| return 0; |
| } |
| |
| static int packet_show(struct filter *f) |
| { |
| FILE *fp; |
| int rc = 0; |
| |
| if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE))) |
| return 0; |
| |
| if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") && |
| packet_show_netlink(f) == 0) |
| return 0; |
| |
| if ((fp = net_packet_open()) == NULL) |
| return -1; |
| if (generic_record_read(fp, packet_show_line, f, AF_PACKET)) |
| rc = -1; |
| |
| fclose(fp); |
| return rc; |
| } |
| |
| static int xdp_stats_print(struct sockstat *s, const struct filter *f) |
| { |
| const char *addr, *port; |
| char q_str[16]; |
| |
| s->local.family = s->remote.family = AF_XDP; |
| |
| if (f->f) { |
| if (run_ssfilter(f->f, s) == 0) |
| return 1; |
| } |
| |
| sock_state_print(s); |
| |
| if (s->iface) { |
| addr = xll_index_to_name(s->iface); |
| snprintf(q_str, sizeof(q_str), "q%d", s->lport); |
| port = q_str; |
| sock_addr_print(addr, ":", port, NULL); |
| } else { |
| sock_addr_print("", "*", "", NULL); |
| } |
| |
| sock_addr_print("", "*", "", NULL); |
| |
| proc_ctx_print(s); |
| |
| if (show_details) |
| sock_details_print(s); |
| |
| return 0; |
| } |
| |
| static void xdp_show_ring(const char *name, struct xdp_diag_ring *ring) |
| { |
| if (oneline) |
| out(" %s(", name); |
| else |
| out("\n\t%s(", name); |
| out("entries:%u", ring->entries); |
| out(")"); |
| } |
| |
| static void xdp_show_umem(struct xdp_diag_umem *umem, struct xdp_diag_ring *fr, |
| struct xdp_diag_ring *cr) |
| { |
| if (oneline) |
| out(" tumem("); |
| else |
| out("\n\tumem("); |
| out("id:%u", umem->id); |
| out(",size:%llu", umem->size); |
| out(",num_pages:%u", umem->num_pages); |
| out(",chunk_size:%u", umem->chunk_size); |
| out(",headroom:%u", umem->headroom); |
| out(",ifindex:%u", umem->ifindex); |
| out(",qid:%u", umem->queue_id); |
| out(",zc:%u", umem->flags & XDP_DU_F_ZEROCOPY); |
| out(",refs:%u", umem->refs); |
| out(")"); |
| |
| if (fr) |
| xdp_show_ring("fr", fr); |
| if (cr) |
| xdp_show_ring("cr", cr); |
| } |
| |
| static int xdp_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct xdp_diag_ring *rx = NULL, *tx = NULL, *fr = NULL, *cr = NULL; |
| struct xdp_diag_msg *msg = NLMSG_DATA(nlh); |
| struct rtattr *tb[XDP_DIAG_MAX + 1]; |
| struct xdp_diag_info *info = NULL; |
| struct xdp_diag_umem *umem = NULL; |
| const struct filter *f = arg; |
| struct sockstat stat = {}; |
| |
| parse_rtattr(tb, XDP_DIAG_MAX, (struct rtattr *)(msg + 1), |
| nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*msg))); |
| |
| stat.type = msg->xdiag_type; |
| stat.ino = msg->xdiag_ino; |
| stat.state = SS_CLOSE; |
| stat.sk = cookie_sk_get(&msg->xdiag_cookie[0]); |
| |
| if (tb[XDP_DIAG_INFO]) { |
| info = RTA_DATA(tb[XDP_DIAG_INFO]); |
| stat.iface = info->ifindex; |
| stat.lport = info->queue_id; |
| } |
| |
| if (tb[XDP_DIAG_UID]) |
| stat.uid = rta_getattr_u32(tb[XDP_DIAG_UID]); |
| if (tb[XDP_DIAG_RX_RING]) |
| rx = RTA_DATA(tb[XDP_DIAG_RX_RING]); |
| if (tb[XDP_DIAG_TX_RING]) |
| tx = RTA_DATA(tb[XDP_DIAG_TX_RING]); |
| if (tb[XDP_DIAG_UMEM]) |
| umem = RTA_DATA(tb[XDP_DIAG_UMEM]); |
| if (tb[XDP_DIAG_UMEM_FILL_RING]) |
| fr = RTA_DATA(tb[XDP_DIAG_UMEM_FILL_RING]); |
| if (tb[XDP_DIAG_UMEM_COMPLETION_RING]) |
| cr = RTA_DATA(tb[XDP_DIAG_UMEM_COMPLETION_RING]); |
| if (tb[XDP_DIAG_MEMINFO]) { |
| __u32 *skmeminfo = RTA_DATA(tb[XDP_DIAG_MEMINFO]); |
| |
| stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC]; |
| } |
| |
| if (xdp_stats_print(&stat, f)) |
| return 0; |
| |
| if (show_details) { |
| if (rx) |
| xdp_show_ring("rx", rx); |
| if (tx) |
| xdp_show_ring("tx", tx); |
| if (umem) |
| xdp_show_umem(umem, fr, cr); |
| } |
| |
| if (show_mem) |
| print_skmeminfo(tb, XDP_DIAG_MEMINFO); // really? |
| |
| |
| return 0; |
| } |
| |
| static int xdp_show(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct xdp_diag_req r); |
| |
| if (!filter_af_get(f, AF_XDP) || !(f->states & (1 << SS_CLOSE))) |
| return 0; |
| |
| req.r.sdiag_family = AF_XDP; |
| req.r.xdiag_show = XDP_SHOW_INFO | XDP_SHOW_RING_CFG | XDP_SHOW_UMEM | |
| XDP_SHOW_MEMINFO; |
| |
| return handle_netlink_request(f, &req.nlh, sizeof(req), xdp_show_sock); |
| } |
| |
| static int netlink_show_one(struct filter *f, |
| int prot, int pid, unsigned int groups, |
| int state, int dst_pid, unsigned int dst_group, |
| int rq, int wq, |
| unsigned long long sk, unsigned long long cb) |
| { |
| struct sockstat st = { |
| .state = SS_CLOSE, |
| .rq = rq, |
| .wq = wq, |
| .local.family = AF_NETLINK, |
| .remote.family = AF_NETLINK, |
| }; |
| |
| SPRINT_BUF(prot_buf) = {}; |
| const char *prot_name; |
| char procname[64] = {}; |
| |
| if (f->f) { |
| st.rport = -1; |
| st.lport = pid; |
| st.local.data[0] = prot; |
| if (run_ssfilter(f->f, &st) == 0) |
| return 1; |
| } |
| |
| sock_state_print(&st); |
| |
| prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf)); |
| |
| if (pid == -1) { |
| procname[0] = '*'; |
| } else if (!numeric) { |
| int done = 0; |
| |
| if (!pid) { |
| done = 1; |
| strncpy(procname, "kernel", 7); |
| } else if (pid > 0) { |
| FILE *fp; |
| |
| snprintf(procname, sizeof(procname), "%s/%d/stat", |
| getenv("PROC_ROOT") ? : "/proc", pid); |
| if ((fp = fopen(procname, "r")) != NULL) { |
| if (fscanf(fp, "%*d (%[^)])", procname) == 1) { |
| snprintf(procname+strlen(procname), |
| sizeof(procname)-strlen(procname), |
| "/%d", pid); |
| done = 1; |
| } |
| fclose(fp); |
| } |
| } |
| if (!done) |
| int_to_str(pid, procname); |
| } else { |
| int_to_str(pid, procname); |
| } |
| |
| sock_addr_print(prot_name, ":", procname, NULL); |
| |
| if (state == NETLINK_CONNECTED) { |
| char dst_group_buf[30]; |
| char dst_pid_buf[30]; |
| |
| sock_addr_print(int_to_str(dst_group, dst_group_buf), ":", |
| int_to_str(dst_pid, dst_pid_buf), NULL); |
| } else { |
| sock_addr_print("", "*", "", NULL); |
| } |
| |
| char *pid_context = NULL; |
| |
| if (show_proc_ctx) { |
| /* The pid value will either be: |
| * 0 if destination kernel - show kernel initial context. |
| * A valid process pid - use getpidcon. |
| * A unique value allocated by the kernel or netlink user |
| * to the process - show context as "not available". |
| */ |
| if (!pid) |
| security_get_initial_context("kernel", &pid_context); |
| else if (pid > 0) |
| getpidcon(pid, &pid_context); |
| |
| out(" proc_ctx=%s", pid_context ? : "unavailable"); |
| free(pid_context); |
| } |
| |
| if (show_details) { |
| out(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups); |
| } |
| |
| return 0; |
| } |
| |
| static int netlink_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct filter *f = (struct filter *)arg; |
| 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]; |
| } |
| |
| if (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)) { |
| return 0; |
| } |
| |
| if (show_mem) { |
| out("\t"); |
| print_skmeminfo(tb, NETLINK_DIAG_MEMINFO); |
| } |
| |
| return 0; |
| } |
| |
| static int netlink_show_netlink(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct netlink_diag_req r); |
| |
| req.r.sdiag_family = AF_NETLINK; |
| req.r.sdiag_protocol = NDIAG_PROTO_ALL; |
| req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO; |
| |
| return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock); |
| } |
| |
| static int netlink_show(struct filter *f) |
| { |
| FILE *fp; |
| char buf[256]; |
| int prot, pid; |
| unsigned int groups; |
| int rq, wq, rc; |
| unsigned long long sk, cb; |
| |
| if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE))) |
| return 0; |
| |
| if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") && |
| netlink_show_netlink(f) == 0) |
| return 0; |
| |
| if ((fp = net_netlink_open()) == NULL) |
| return -1; |
| if (!fgets(buf, sizeof(buf), fp)) { |
| fclose(fp); |
| return -1; |
| } |
| |
| while (fgets(buf, sizeof(buf), fp)) { |
| sscanf(buf, "%llx %d %d %x %d %d %llx %d", |
| &sk, |
| &prot, &pid, &groups, &rq, &wq, &cb, &rc); |
| |
| netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb); |
| } |
| |
| fclose(fp); |
| return 0; |
| } |
| |
| static bool vsock_type_skip(struct sockstat *s, struct filter *f) |
| { |
| if (s->type == SOCK_STREAM && !(f->dbs & (1 << VSOCK_ST_DB))) |
| return true; |
| if (s->type == SOCK_DGRAM && !(f->dbs & (1 << VSOCK_DG_DB))) |
| return true; |
| return false; |
| } |
| |
| static void vsock_addr_print(inet_prefix *a, __u32 port) |
| { |
| char cid_str[sizeof("4294967295")]; |
| char port_str[sizeof("4294967295")]; |
| __u32 cid; |
| |
| memcpy(&cid, a->data, sizeof(cid)); |
| |
| if (cid == ~(__u32)0) |
| snprintf(cid_str, sizeof(cid_str), "*"); |
| else |
| snprintf(cid_str, sizeof(cid_str), "%u", cid); |
| |
| if (port == ~(__u32)0) |
| snprintf(port_str, sizeof(port_str), "*"); |
| else |
| snprintf(port_str, sizeof(port_str), "%u", port); |
| |
| sock_addr_print(cid_str, ":", port_str, NULL); |
| } |
| |
| static void vsock_stats_print(struct sockstat *s, struct filter *f) |
| { |
| sock_state_print(s); |
| |
| vsock_addr_print(&s->local, s->lport); |
| vsock_addr_print(&s->remote, s->rport); |
| |
| proc_ctx_print(s); |
| } |
| |
| static int vsock_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct filter *f = (struct filter *)arg; |
| struct vsock_diag_msg *r = NLMSG_DATA(nlh); |
| struct sockstat stat = { |
| .type = r->vdiag_type, |
| .lport = r->vdiag_src_port, |
| .rport = r->vdiag_dst_port, |
| .state = r->vdiag_state, |
| .ino = r->vdiag_ino, |
| }; |
| |
| vsock_set_inet_prefix(&stat.local, r->vdiag_src_cid); |
| vsock_set_inet_prefix(&stat.remote, r->vdiag_dst_cid); |
| |
| if (vsock_type_skip(&stat, f)) |
| return 0; |
| |
| if (f->f && run_ssfilter(f->f, &stat) == 0) |
| return 0; |
| |
| vsock_stats_print(&stat, f); |
| |
| return 0; |
| } |
| |
| static int vsock_show(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct vsock_diag_req r); |
| |
| if (!filter_af_get(f, AF_VSOCK)) |
| return 0; |
| |
| req.r.sdiag_family = AF_VSOCK; |
| req.r.vdiag_states = f->states; |
| |
| return handle_netlink_request(f, &req.nlh, sizeof(req), vsock_show_sock); |
| } |
| |
| static void tipc_sock_addr_print(struct rtattr *net_addr, struct rtattr *id) |
| { |
| uint32_t node = rta_getattr_u32(net_addr); |
| uint32_t identity = rta_getattr_u32(id); |
| |
| SPRINT_BUF(addr) = {}; |
| SPRINT_BUF(port) = {}; |
| |
| sprintf(addr, "%u", node); |
| sprintf(port, "%u", identity); |
| sock_addr_print(addr, ":", port, NULL); |
| |
| } |
| |
| static int tipc_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct rtattr *stat[TIPC_NLA_SOCK_STAT_MAX + 1] = {}; |
| struct rtattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {}; |
| struct rtattr *con[TIPC_NLA_CON_MAX + 1] = {}; |
| struct rtattr *info[TIPC_NLA_MAX + 1] = {}; |
| struct rtattr *msg_ref; |
| struct sockstat ss = {}; |
| |
| parse_rtattr(info, TIPC_NLA_MAX, NLMSG_DATA(nlh), |
| NLMSG_PAYLOAD(nlh, 0)); |
| |
| if (!info[TIPC_NLA_SOCK]) |
| return 0; |
| |
| msg_ref = info[TIPC_NLA_SOCK]; |
| parse_rtattr(attrs, TIPC_NLA_SOCK_MAX, RTA_DATA(msg_ref), |
| RTA_PAYLOAD(msg_ref)); |
| |
| msg_ref = attrs[TIPC_NLA_SOCK_STAT]; |
| parse_rtattr(stat, TIPC_NLA_SOCK_STAT_MAX, |
| RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref)); |
| |
| |
| ss.local.family = AF_TIPC; |
| ss.type = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TYPE]); |
| ss.state = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TIPC_STATE]); |
| ss.uid = rta_getattr_u32(attrs[TIPC_NLA_SOCK_UID]); |
| ss.ino = rta_getattr_u32(attrs[TIPC_NLA_SOCK_INO]); |
| ss.rq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_RCVQ]); |
| ss.wq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_SENDQ]); |
| ss.sk = rta_getattr_u64(attrs[TIPC_NLA_SOCK_COOKIE]); |
| |
| sock_state_print (&ss); |
| |
| tipc_sock_addr_print(attrs[TIPC_NLA_SOCK_ADDR], |
| attrs[TIPC_NLA_SOCK_REF]); |
| |
| msg_ref = attrs[TIPC_NLA_SOCK_CON]; |
| if (msg_ref) { |
| parse_rtattr(con, TIPC_NLA_CON_MAX, |
| RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref)); |
| |
| tipc_sock_addr_print(con[TIPC_NLA_CON_NODE], |
| con[TIPC_NLA_CON_SOCK]); |
| } else |
| sock_addr_print("", "-", "", NULL); |
| |
| if (show_details) |
| sock_details_print(&ss); |
| |
| proc_ctx_print(&ss); |
| |
| if (show_tipcinfo) { |
| if (oneline) |
| out(" type:%s", stype_nameg[ss.type]); |
| else |
| out("\n type:%s", stype_nameg[ss.type]); |
| out(" cong:%s ", |
| stat[TIPC_NLA_SOCK_STAT_LINK_CONG] ? "link" : |
| stat[TIPC_NLA_SOCK_STAT_CONN_CONG] ? "conn" : "none"); |
| out(" drop:%d ", |
| rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_DROP])); |
| |
| if (attrs[TIPC_NLA_SOCK_HAS_PUBL]) |
| out(" publ"); |
| |
| if (con[TIPC_NLA_CON_FLAG]) |
| out(" via {%u,%u} ", |
| rta_getattr_u32(con[TIPC_NLA_CON_TYPE]), |
| rta_getattr_u32(con[TIPC_NLA_CON_INST])); |
| } |
| |
| return 0; |
| } |
| |
| static int tipc_show(struct filter *f) |
| { |
| DIAG_REQUEST(req, struct tipc_sock_diag_req r); |
| |
| memset(&req.r, 0, sizeof(req.r)); |
| req.r.sdiag_family = AF_TIPC; |
| req.r.tidiag_states = f->states; |
| |
| return handle_netlink_request(f, &req.nlh, sizeof(req), tipc_show_sock); |
| } |
| |
| struct sock_diag_msg { |
| __u8 sdiag_family; |
| }; |
| |
| static int generic_show_sock(struct nlmsghdr *nlh, void *arg) |
| { |
| struct sock_diag_msg *r = NLMSG_DATA(nlh); |
| struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX }; |
| int ret; |
| |
| switch (r->sdiag_family) { |
| case AF_INET: |
| case AF_INET6: |
| inet_arg.rth = inet_arg.f->rth_for_killing; |
| ret = show_one_inet_sock(nlh, &inet_arg); |
| break; |
| case AF_UNIX: |
| ret = unix_show_sock(nlh, arg); |
| break; |
| case AF_PACKET: |
| ret = packet_show_sock(nlh, arg); |
| break; |
| case AF_NETLINK: |
| ret = netlink_show_sock(nlh, arg); |
| break; |
| case AF_VSOCK: |
| ret = vsock_show_sock(nlh, arg); |
| break; |
| case AF_XDP: |
| ret = xdp_show_sock(nlh, arg); |
| break; |
| default: |
| ret = -1; |
| } |
| |
| render(); |
| |
| return ret; |
| } |
| |
| static int handle_follow_request(struct filter *f) |
| { |
| int ret = 0; |
| int groups = 0; |
| struct rtnl_handle rth, rth2; |
| |
| if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << TCP_DB)) |
| groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1); |
| if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << UDP_DB)) |
| groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1); |
| if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << TCP_DB)) |
| groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1); |
| if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << UDP_DB)) |
| groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1); |
| |
| if (groups == 0) |
| return -1; |
| |
| if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG)) |
| return -1; |
| |
| rth.dump = 0; |
| rth.local.nl_pid = 0; |
| |
| if (f->kill) { |
| if (rtnl_open_byproto(&rth2, groups, NETLINK_SOCK_DIAG)) { |
| rtnl_close(&rth); |
| return -1; |
| } |
| f->rth_for_killing = &rth2; |
| } |
| |
| if (rtnl_dump_filter(&rth, generic_show_sock, f)) |
| ret = -1; |
| |
| rtnl_close(&rth); |
| if (f->rth_for_killing) |
| rtnl_close(f->rth_for_killing); |
| return ret; |
| } |
| |
| static int get_snmp_int(char *proto, char *key, int *result) |
| { |
| char buf[1024]; |
| FILE *fp; |
| int protolen = strlen(proto); |
| int keylen = strlen(key); |
| |
| *result = 0; |
| |
| if ((fp = net_snmp_open()) == NULL) |
| return -1; |
| |
| while (fgets(buf, sizeof(buf), fp) != NULL) { |
| char *p = buf; |
| int pos = 0; |
| |
| if (memcmp(buf, proto, protolen)) |
| continue; |
| while ((p = strchr(p, ' ')) != NULL) { |
| pos++; |
| p++; |
| if (memcmp(p, key, keylen) == 0 && |
| (p[keylen] == ' ' || p[keylen] == '\n')) |
| break; |
| } |
| if (fgets(buf, sizeof(buf), fp) == NULL) |
| break; |
| if (memcmp(buf, proto, protolen)) |
| break; |
| p = buf; |
| while ((p = strchr(p, ' ')) != NULL) { |
| p++; |
| if (--pos == 0) { |
| sscanf(p, "%d", result); |
| fclose(fp); |
| return 0; |
| } |
| } |
| } |
| |
| fclose(fp); |
| errno = ESRCH; |
| return -1; |
| } |
| |
| |
| /* Get stats from sockstat */ |
| |
| struct ssummary { |
| int socks; |
| int tcp_mem; |
| int tcp_total; |
| int tcp_orphans; |
| int tcp_tws; |
| int tcp4_hashed; |
| int udp4; |
| int raw4; |
| int frag4; |
| int frag4_mem; |
| int tcp6_hashed; |
| int udp6; |
| int raw6; |
| int frag6; |
| int frag6_mem; |
| }; |
| |
| static void get_sockstat_line(char *line, struct ssummary *s) |
| { |
| char id[256], rem[256]; |
| |
| if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2) |
| return; |
| |
| if (strcmp(id, "sockets:") == 0) |
| sscanf(rem, "%*s%d", &s->socks); |
| else if (strcmp(id, "UDP:") == 0) |
| sscanf(rem, "%*s%d", &s->udp4); |
| else if (strcmp(id, "UDP6:") == 0) |
| sscanf(rem, "%*s%d", &s->udp6); |
| else if (strcmp(id, "RAW:") == 0) |
| sscanf(rem, "%*s%d", &s->raw4); |
| else if (strcmp(id, "RAW6:") == 0) |
| sscanf(rem, "%*s%d", &s->raw6); |
| else if (strcmp(id, "TCP6:") == 0) |
| sscanf(rem, "%*s%d", &s->tcp6_hashed); |
| else if (strcmp(id, "FRAG:") == 0) |
| sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem); |
| else if (strcmp(id, "FRAG6:") == 0) |
| sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem); |
| else if (strcmp(id, "TCP:") == 0) |
| sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d", |
| &s->tcp4_hashed, |
| &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem); |
| } |
| |
| static int get_sockstat(struct ssummary *s) |
| { |
| char buf[256]; |
| FILE *fp; |
| |
| memset(s, 0, sizeof(*s)); |
| |
| if ((fp = net_sockstat_open()) == NULL) |
| return -1; |
| while (fgets(buf, sizeof(buf), fp) != NULL) |
| get_sockstat_line(buf, s); |
| fclose(fp); |
| |
| if ((fp = net_sockstat6_open()) == NULL) |
| return 0; |
| while (fgets(buf, sizeof(buf), fp) != NULL) |
| get_sockstat_line(buf, s); |
| fclose(fp); |
| |
| return 0; |
| } |
| |
| static int print_summary(void) |
| { |
| struct ssummary s; |
| int tcp_estab; |
| |
| if (get_sockstat(&s) < 0) |
| perror("ss: get_sockstat"); |
| if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0) |
| perror("ss: get_snmpstat"); |
| |
| printf("Total: %d\n", s.socks); |
| |
| printf("TCP: %d (estab %d, closed %d, orphaned %d, timewait %d)\n", |
| s.tcp_total + s.tcp_tws, tcp_estab, |
| s.tcp_total - (s.tcp4_hashed + s.tcp6_hashed - s.tcp_tws), |
| s.tcp_orphans, s.tcp_tws); |
| |
| printf("\n"); |
| printf("Transport Total IP IPv6\n"); |
| printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6); |
| printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6); |
| printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed); |
| printf("INET %-9d %-9d %-9d\n", |
| s.raw4+s.udp4+s.tcp4_hashed+ |
| s.raw6+s.udp6+s.tcp6_hashed, |
| s.raw4+s.udp4+s.tcp4_hashed, |
| s.raw6+s.udp6+s.tcp6_hashed); |
| printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6); |
| |
| printf("\n"); |
| |
| return 0; |
| } |
| |
| static void _usage(FILE *dest) |
| { |
| fprintf(dest, |
| "Usage: ss [ OPTIONS ]\n" |
| " ss [ OPTIONS ] [ FILTER ]\n" |
| " -h, --help this message\n" |
| " -V, --version output version information\n" |
| " -n, --numeric don't resolve service names\n" |
| " -r, --resolve resolve host names\n" |
| " -a, --all display all sockets\n" |
| " -l, --listening display listening sockets\n" |
| " -o, --options show timer information\n" |
| " -e, --extended show detailed socket information\n" |
| " -m, --memory show socket memory usage\n" |
| " -p, --processes show process using socket\n" |
| " -i, --info show internal TCP information\n" |
| " --tipcinfo show internal tipc socket information\n" |
| " -s, --summary show socket usage summary\n" |
| " --tos show tos and priority information\n" |
| " --cgroup show cgroup information\n" |
| " -b, --bpf show bpf filter socket information\n" |
| " -E, --events continually display sockets as they are destroyed\n" |
| " -Z, --context display process SELinux security contexts\n" |
| " -z, --contexts display process and socket SELinux security contexts\n" |
| " -N, --net switch to the specified network namespace name\n" |
| "\n" |
| " -4, --ipv4 display only IP version 4 sockets\n" |
| " -6, --ipv6 display only IP version 6 sockets\n" |
| " -0, --packet display PACKET sockets\n" |
| " -t, --tcp display only TCP sockets\n" |
| " -S, --sctp display only SCTP sockets\n" |
| " -u, --udp display only UDP sockets\n" |
| " -d, --dccp display only DCCP sockets\n" |
| " -w, --raw display only RAW sockets\n" |
| " -x, --unix display only Unix domain sockets\n" |
| " --tipc display only TIPC sockets\n" |
| " --vsock display only vsock sockets\n" |
| " -f, --family=FAMILY display sockets of type FAMILY\n" |
| " FAMILY := {inet|inet6|link|unix|netlink|vsock|tipc|xdp|help}\n" |
| "\n" |
| " -K, --kill forcibly close sockets, display what was closed\n" |
| " -H, --no-header Suppress header line\n" |
| " -O, --oneline socket's data printed on a single line\n" |
| "\n" |
| " -A, --query=QUERY, --socket=QUERY\n" |
| " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram|tipc}[,QUERY]\n" |
| "\n" |
| " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n" |
| " -F, --filter=FILE read filter information from FILE\n" |
| " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n" |
| " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n" |
| " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n" |
| " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n" |
| " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n" |
| " bucket := {syn-recv|time-wait}\n" |
| " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n" |
| ); |
| } |
| |
| static void help(void) __attribute__((noreturn)); |
| static void help(void) |
| { |
| _usage(stdout); |
| exit(0); |
| } |
| |
| static void usage(void) __attribute__((noreturn)); |
| static void usage(void) |
| { |
| _usage(stderr); |
| exit(-1); |
| } |
| |
| |
| static int scan_state(const char *state) |
| { |
| static const char * const 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", |
| }; |
| int i; |
| |
| if (strcasecmp(state, "close") == 0 || |
| strcasecmp(state, "closed") == 0) |
| return (1<<SS_CLOSE); |
| if (strcasecmp(state, "syn-rcv") == 0) |
| return (1<<SS_SYN_RECV); |
| if (strcasecmp(state, "established") == 0) |
| return (1<<SS_ESTABLISHED); |
| if (strcasecmp(state, "all") == 0) |
| return SS_ALL; |
| if (strcasecmp(state, "connected") == 0) |
| return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)); |
| if (strcasecmp(state, "synchronized") == 0) |
| return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT)); |
| if (strcasecmp(state, "bucket") == 0) |
| return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT); |
| if (strcasecmp(state, "big") == 0) |
| return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT)); |
| for (i = 0; i < SS_MAX; i++) { |
| if (strcasecmp(state, sstate_namel[i]) == 0) |
| return (1<<i); |
| } |
| |
| fprintf(stderr, "ss: wrong state name: %s\n", state); |
| exit(-1); |
| } |
| |
| /* Values 'v' and 'V' are already used so a non-character is used */ |
| #define OPT_VSOCK 256 |
| |
| /* Values of 't' are already used so a non-character is used */ |
| #define OPT_TIPCSOCK 257 |
| #define OPT_TIPCINFO 258 |
| |
| #define OPT_TOS 259 |
| |
| /* Values of 'x' are already used so a non-character is used */ |
| #define OPT_XDPSOCK 260 |
| |
| #define OPT_CGROUP 261 |
| |
| static const struct option long_opts[] = { |
| { "numeric", 0, 0, 'n' }, |
| { "resolve", 0, 0, 'r' }, |
| { "options", 0, 0, 'o' }, |
| { "extended", 0, 0, 'e' }, |
| { "memory", 0, 0, 'm' }, |
| { "info", 0, 0, 'i' }, |
| { "processes", 0, 0, 'p' }, |
| { "bpf", 0, 0, 'b' }, |
| { "events", 0, 0, 'E' }, |
| { "dccp", 0, 0, 'd' }, |
| { "tcp", 0, 0, 't' }, |
| { "sctp", 0, 0, 'S' }, |
| { "udp", 0, 0, 'u' }, |
| { "raw", 0, 0, 'w' }, |
| { "unix", 0, 0, 'x' }, |
| { "tipc", 0, 0, OPT_TIPCSOCK}, |
| { "vsock", 0, 0, OPT_VSOCK }, |
| { "all", 0, 0, 'a' }, |
| { "listening", 0, 0, 'l' }, |
| { "ipv4", 0, 0, '4' }, |
| { "ipv6", 0, 0, '6' }, |
| { "packet", 0, 0, '0' }, |
| { "family", 1, 0, 'f' }, |
| { "socket", 1, 0, 'A' }, |
| { "query", 1, 0, 'A' }, |
| { "summary", 0, 0, 's' }, |
| { "diag", 1, 0, 'D' }, |
| { "filter", 1, 0, 'F' }, |
| { "version", 0, 0, 'V' }, |
| { "help", 0, 0, 'h' }, |
| { "context", 0, 0, 'Z' }, |
| { "contexts", 0, 0, 'z' }, |
| { "net", 1, 0, 'N' }, |
| { "tipcinfo", 0, 0, OPT_TIPCINFO}, |
| { "tos", 0, 0, OPT_TOS }, |
| { "cgroup", 0, 0, OPT_CGROUP }, |
| { "kill", 0, 0, 'K' }, |
| { "no-header", 0, 0, 'H' }, |
| { "xdp", 0, 0, OPT_XDPSOCK}, |
| { "oneline", 0, 0, 'O' }, |
| { 0 } |
| |
| }; |
| |
| int main(int argc, char *argv[]) |
| { |
| int saw_states = 0; |
| int saw_query = 0; |
| int do_summary = 0; |
| const char *dump_tcpdiag = NULL; |
| FILE *filter_fp = NULL; |
| int ch; |
| int state_filter = 0; |
| |
| while ((ch = getopt_long(argc, argv, |
| "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHSO", |
| long_opts, NULL)) != EOF) { |
| switch (ch) { |
| case 'n': |
| numeric = 1; |
| break; |
| case 'r': |
| resolve_hosts = 1; |
| break; |
| case 'o': |
| show_options = 1; |
| break; |
| case 'e': |
| show_options = 1; |
| show_details++; |
| break; |
| case 'm': |
| show_mem = 1; |
| break; |
| case 'i': |
| show_tcpinfo = 1; |
| break; |
| case 'p': |
| show_users++; |
| user_ent_hash_build(); |
| break; |
| case 'b': |
| show_options = 1; |
| show_bpf++; |
| break; |
| case 'E': |
| follow_events = 1; |
| break; |
| case 'd': |
| filter_db_set(¤t_filter, DCCP_DB, true); |
| break; |
| case 't': |
| filter_db_set(¤t_filter, TCP_DB, true); |
| break; |
| case 'S': |
| filter_db_set(¤t_filter, SCTP_DB, true); |
| break; |
| case 'u': |
| filter_db_set(¤t_filter, UDP_DB, true); |
| break; |
| case 'w': |
| filter_db_set(¤t_filter, RAW_DB, true); |
| break; |
| case 'x': |
| filter_af_set(¤t_filter, AF_UNIX); |
| break; |
| case OPT_VSOCK: |
| filter_af_set(¤t_filter, AF_VSOCK); |
| break; |
| case OPT_TIPCSOCK: |
| filter_af_set(¤t_filter, AF_TIPC); |
| break; |
| case 'a': |
| state_filter = SS_ALL; |
| break; |
| case 'l': |
| state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE); |
| break; |
| case '4': |
| filter_af_set(¤t_filter, AF_INET); |
| break; |
| case '6': |
| filter_af_set(¤t_filter, AF_INET6); |
| break; |
| case '0': |
| filter_af_set(¤t_filter, AF_PACKET); |
| break; |
| case OPT_XDPSOCK: |
| filter_af_set(¤t_filter, AF_XDP); |
| break; |
| case 'f': |
| if (strcmp(optarg, "inet") == 0) |
| filter_af_set(¤t_filter, AF_INET); |
| else if (strcmp(optarg, "inet6") == 0) |
| filter_af_set(¤t_filter, AF_INET6); |
| else if (strcmp(optarg, "link") == 0) |
| filter_af_set(¤t_filter, AF_PACKET); |
| else if (strcmp(optarg, "unix") == 0) |
| filter_af_set(¤t_filter, AF_UNIX); |
| else if (strcmp(optarg, "netlink") == 0) |
| filter_af_set(¤t_filter, AF_NETLINK); |
| else if (strcmp(optarg, "tipc") == 0) |
| filter_af_set(¤t_filter, AF_TIPC); |
| else if (strcmp(optarg, "vsock") == 0) |
| filter_af_set(¤t_filter, AF_VSOCK); |
| else if (strcmp(optarg, "xdp") == 0) |
| filter_af_set(¤t_filter, AF_XDP); |
| else if (strcmp(optarg, "help") == 0) |
| help(); |
| else { |
| fprintf(stderr, "ss: \"%s\" is invalid family\n", |
| optarg); |
| usage(); |
| } |
| break; |
| case 'A': |
| { |
| char *p, *p1; |
| |
| if (!saw_query) { |
| current_filter.dbs = 0; |
| state_filter = state_filter ? |
| state_filter : SS_CONN; |
| saw_query = 1; |
| do_default = 0; |
| } |
| p = p1 = optarg; |
| do { |
| if ((p1 = strchr(p, ',')) != NULL) |
| *p1 = 0; |
| if (filter_db_parse(¤t_filter, p)) { |
| fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p); |
| usage(); |
| } |
| p = p1 + 1; |
| } while (p1); |
| break; |
| } |
| case 's': |
| do_summary = 1; |
| break; |
| case 'D': |
| dump_tcpdiag = optarg; |
| break; |
| case 'F': |
| if (filter_fp) { |
| fprintf(stderr, "More than one filter file\n"); |
| exit(-1); |
| } |
| if (optarg[0] == '-') |
| filter_fp = stdin; |
| else |
| filter_fp = fopen(optarg, "r"); |
| if (!filter_fp) { |
| perror("fopen filter file"); |
| exit(-1); |
| } |
| break; |
| case 'v': |
| case 'V': |
| printf("ss utility, iproute2-ss%s\n", SNAPSHOT); |
| exit(0); |
| case 'z': |
| show_sock_ctx++; |
| /* fall through */ |
| case 'Z': |
| if (is_selinux_enabled() <= 0) { |
| fprintf(stderr, "ss: SELinux is not enabled.\n"); |
| exit(1); |
| } |
| show_proc_ctx++; |
| user_ent_hash_build(); |
| break; |
| case 'N': |
| if (netns_switch(optarg)) |
| exit(1); |
| break; |
| case OPT_TIPCINFO: |
| show_tipcinfo = 1; |
| break; |
| case OPT_TOS: |
| show_tos = 1; |
| break; |
| case OPT_CGROUP: |
| show_cgroup = 1; |
| break; |
| case 'K': |
| current_filter.kill = 1; |
| break; |
| case 'H': |
| show_header = 0; |
| break; |
| case 'O': |
| oneline = 1; |
| break; |
| case 'h': |
| help(); |
| case '?': |
| default: |
| usage(); |
| } |
| } |
| |
| argc -= optind; |
| argv += optind; |
| |
| if (do_summary) { |
| print_summary(); |
| if (do_default && argc == 0) |
| exit(0); |
| } |
| |
| while (argc > 0) { |
| if (strcmp(*argv, "state") == 0) { |
| NEXT_ARG(); |
| if (!saw_states) |
| state_filter = 0; |
| state_filter |= scan_state(*argv); |
| saw_states = 1; |
| } else if (strcmp(*argv, "exclude") == 0 || |
| strcmp(*argv, "excl") == 0) { |
| NEXT_ARG(); |
| if (!saw_states) |
| state_filter = SS_ALL; |
| state_filter &= ~scan_state(*argv); |
| saw_states = 1; |
| } else { |
| break; |
| } |
| argc--; argv++; |
| } |
| |
| if (do_default) { |
| state_filter = state_filter ? state_filter : SS_CONN; |
| filter_db_parse(¤t_filter, "all"); |
| } |
| |
| filter_states_set(¤t_filter, state_filter); |
| filter_merge_defaults(¤t_filter); |
| |
| if (!numeric && resolve_hosts && |
| (current_filter.dbs & (UNIX_DBM|INET_L4_DBM))) |
| init_service_resolver(); |
| |
| if (current_filter.dbs == 0) { |
| fprintf(stderr, "ss: no socket tables to show with such filter.\n"); |
| exit(0); |
| } |
| if (current_filter.families == 0) { |
| fprintf(stderr, "ss: no families to show with such filter.\n"); |
| exit(0); |
| } |
| if (current_filter.states == 0) { |
| fprintf(stderr, "ss: no socket states to show with such filter.\n"); |
| exit(0); |
| } |
| |
| if (dump_tcpdiag) { |
| FILE *dump_fp = stdout; |
| |
| if (!(current_filter.dbs & (1<<TCP_DB))) { |
| fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n"); |
| exit(0); |
| } |
| if (dump_tcpdiag[0] != '-') { |
| dump_fp = fopen(dump_tcpdiag, "w"); |
| if (!dump_tcpdiag) { |
| perror("fopen dump file"); |
| exit(-1); |
| } |
| } |
| inet_show_netlink(¤t_filter, dump_fp, IPPROTO_TCP); |
| fflush(dump_fp); |
| exit(0); |
| } |
| |
| if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp)) |
| usage(); |
| |
| if (!(current_filter.dbs & (current_filter.dbs - 1))) |
| columns[COL_NETID].disabled = 1; |
| |
| if (!(current_filter.states & (current_filter.states - 1))) |
| columns[COL_STATE].disabled = 1; |
| |
| if (show_header) |
| print_header(); |
| |
| fflush(stdout); |
| |
| if (follow_events) |
| exit(handle_follow_request(¤t_filter)); |
| |
| if (current_filter.dbs & (1<<NETLINK_DB)) |
| netlink_show(¤t_filter); |
| if (current_filter.dbs & PACKET_DBM) |
| packet_show(¤t_filter); |
| if (current_filter.dbs & UNIX_DBM) |
| unix_show(¤t_filter); |
| if (current_filter.dbs & (1<<RAW_DB)) |
| raw_show(¤t_filter); |
| if (current_filter.dbs & (1<<UDP_DB)) |
| udp_show(¤t_filter); |
| if (current_filter.dbs & (1<<TCP_DB)) |
| tcp_show(¤t_filter); |
| if (current_filter.dbs & (1<<DCCP_DB)) |
| dccp_show(¤t_filter); |
| if (current_filter.dbs & (1<<SCTP_DB)) |
| sctp_show(¤t_filter); |
| if (current_filter.dbs & VSOCK_DBM) |
| vsock_show(¤t_filter); |
| if (current_filter.dbs & (1<<TIPC_DB)) |
| tipc_show(¤t_filter); |
| if (current_filter.dbs & (1<<XDP_DB)) |
| xdp_show(¤t_filter); |
| |
| if (show_users || show_proc_ctx || show_sock_ctx) |
| user_ent_destroy(); |
| |
| render(); |
| |
| return 0; |
| } |