260 lines
7.4 KiB
C
260 lines
7.4 KiB
C
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/*
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* Copyright (c) 2005-2020 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#include <sys/types.h>
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#include <sys/kernel_types.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/file_internal.h>
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#include <sys/stat.h>
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#include <sys/select.h>
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#include <sys/pipe.h>
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#include <sys/proc_info.h>
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#include <sys/domain.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/socketvar.h>
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#include <sys/unpcb.h>
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#include <sys/sys_domain.h>
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#include <sys/kern_event.h>
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#include <sys/vsock_domain.h>
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#include <mach/vm_param.h>
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#include <net/ndrv_var.h>
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#include <netinet/in_pcb.h>
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#include <netinet/tcp_var.h>
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#include <string.h>
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static void fill_sockbuf_info(struct sockbuf *sb, struct sockbuf_info *sbi);
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static void fill_common_sockinfo(struct socket *so, struct socket_info *si);
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static void
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fill_sockbuf_info(struct sockbuf *sb, struct sockbuf_info *sbi)
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{
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sbi->sbi_cc = sb->sb_cc;
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sbi->sbi_hiwat = sb->sb_hiwat;
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sbi->sbi_mbcnt = sb->sb_mbcnt;
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sbi->sbi_mbmax = sb->sb_mbmax;
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sbi->sbi_lowat = sb->sb_lowat;
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sbi->sbi_flags = (short)sb->sb_flags;
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sbi->sbi_timeo = (short)((sb->sb_timeo.tv_sec * hz) +
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sb->sb_timeo.tv_usec / tick);
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if (sbi->sbi_timeo == 0 && sb->sb_timeo.tv_usec != 0) {
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sbi->sbi_timeo = 1;
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}
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}
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static void
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fill_common_sockinfo(struct socket *so, struct socket_info *si)
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{
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si->soi_so = (u_int64_t)VM_KERNEL_ADDRPERM(so);
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si->soi_type = so->so_type;
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si->soi_options = (short)(so->so_options & 0xffff);
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si->soi_linger = so->so_linger;
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si->soi_state = so->so_state;
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si->soi_pcb = (u_int64_t)VM_KERNEL_ADDRPERM(so->so_pcb);
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if (so->so_proto) {
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si->soi_protocol = SOCK_PROTO(so);
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if (so->so_proto->pr_domain) {
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si->soi_family = SOCK_DOM(so);
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} else {
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si->soi_family = 0;
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}
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} else {
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si->soi_protocol = si->soi_family = 0;
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}
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si->soi_qlen = so->so_qlen;
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si->soi_incqlen = so->so_incqlen;
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si->soi_qlimit = so->so_qlimit;
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si->soi_timeo = so->so_timeo;
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si->soi_error = so->so_error;
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si->soi_oobmark = so->so_oobmark;
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fill_sockbuf_info(&so->so_snd, &si->soi_snd);
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fill_sockbuf_info(&so->so_rcv, &si->soi_rcv);
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}
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errno_t
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fill_socketinfo(struct socket *so, struct socket_info *si)
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{
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errno_t error = 0;
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int domain;
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short type;
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short protocol;
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socket_lock(so, 0);
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si->soi_kind = SOCKINFO_GENERIC;
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fill_common_sockinfo(so, si);
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if (so->so_pcb == NULL || so->so_proto == 0 ||
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so->so_proto->pr_domain == NULL) {
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goto out;
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}
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/*
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* The kind of socket is determined by the triplet
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* {domain, type, protocol}
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*/
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domain = SOCK_DOM(so);
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type = SOCK_TYPE(so);
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protocol = SOCK_PROTO(so);
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switch (domain) {
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case PF_INET:
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case PF_INET6: {
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struct in_sockinfo *insi = &si->soi_proto.pri_in;
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struct inpcb *inp = (struct inpcb *)so->so_pcb;
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si->soi_kind = SOCKINFO_IN;
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insi->insi_fport = inp->inp_fport;
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insi->insi_lport = inp->inp_lport;
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insi->insi_gencnt = inp->inp_gencnt;
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insi->insi_flags = inp->inp_flags;
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insi->insi_vflag = inp->inp_vflag;
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insi->insi_ip_ttl = inp->inp_ip_ttl;
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insi->insi_faddr.ina_6 = inp->inp_dependfaddr.inp6_foreign;
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insi->insi_laddr.ina_6 = inp->inp_dependladdr.inp6_local;
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insi->insi_v4.in4_tos = inp->inp_depend4.inp4_ip_tos;
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insi->insi_v6.in6_hlim = 0;
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insi->insi_v6.in6_cksum = inp->inp_depend6.inp6_cksum;
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insi->insi_v6.in6_ifindex = 0;
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insi->insi_v6.in6_hops = inp->inp_depend6.inp6_hops;
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if (type == SOCK_STREAM && (protocol == 0 ||
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protocol == IPPROTO_TCP) && inp->inp_ppcb != NULL) {
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struct tcp_sockinfo *tcpsi = &si->soi_proto.pri_tcp;
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struct tcpcb *tp = (struct tcpcb *)inp->inp_ppcb;
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si->soi_kind = SOCKINFO_TCP;
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tcpsi->tcpsi_state = tp->t_state;
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tcpsi->tcpsi_timer[TSI_T_REXMT] =
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tp->t_timer[TCPT_REXMT];
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tcpsi->tcpsi_timer[TSI_T_PERSIST] =
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tp->t_timer[TCPT_PERSIST];
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tcpsi->tcpsi_timer[TSI_T_KEEP] =
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tp->t_timer[TCPT_KEEP];
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tcpsi->tcpsi_timer[TSI_T_2MSL] =
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tp->t_timer[TCPT_2MSL];
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tcpsi->tcpsi_mss = tp->t_maxseg;
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tcpsi->tcpsi_flags = tp->t_flags;
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tcpsi->tcpsi_tp =
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(u_int64_t)VM_KERNEL_ADDRPERM(tp);
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}
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break;
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}
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case PF_UNIX: {
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struct unpcb *unp = (struct unpcb *)so->so_pcb;
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struct un_sockinfo *unsi = &si->soi_proto.pri_un;
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si->soi_kind = SOCKINFO_UN;
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unsi->unsi_conn_pcb =
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(uint64_t)VM_KERNEL_ADDRPERM(unp->unp_conn);
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if (unp->unp_conn) {
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unsi->unsi_conn_so = (uint64_t)
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VM_KERNEL_ADDRPERM(unp->unp_conn->unp_socket);
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}
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if (unp->unp_addr) {
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size_t addrlen = unp->unp_addr->sun_len;
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if (addrlen > SOCK_MAXADDRLEN) {
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addrlen = SOCK_MAXADDRLEN;
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}
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bcopy(unp->unp_addr, &unsi->unsi_addr, addrlen);
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}
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if (unp->unp_conn && unp->unp_conn->unp_addr) {
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size_t addrlen = unp->unp_conn->unp_addr->sun_len;
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if (addrlen > SOCK_MAXADDRLEN) {
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addrlen = SOCK_MAXADDRLEN;
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}
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bcopy(unp->unp_conn->unp_addr, &unsi->unsi_caddr,
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addrlen);
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}
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break;
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}
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case PF_NDRV: {
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struct ndrv_cb *ndrv_cb = (struct ndrv_cb *)so->so_pcb;
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struct ndrv_info *ndrvsi = &si->soi_proto.pri_ndrv;
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si->soi_kind = SOCKINFO_NDRV;
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/* TDB lock ifnet ???? */
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if (ndrv_cb->nd_if != 0) {
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struct ifnet *ifp = ndrv_cb->nd_if;
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ndrvsi->ndrvsi_if_family = ifp->if_family;
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ndrvsi->ndrvsi_if_unit = ifp->if_unit;
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strlcpy(ndrvsi->ndrvsi_if_name, ifp->if_name, IFNAMSIZ);
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}
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break;
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}
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case PF_VSOCK: {
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const struct vsockpcb *pcb = (struct vsockpcb *)(so)->so_pcb;
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struct vsock_sockinfo *vsocksi = &si->soi_proto.pri_vsock;
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si->soi_kind = SOCKINFO_VSOCK;
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vsocksi->local_cid = pcb->local_address.cid;
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vsocksi->local_port = pcb->local_address.port;
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vsocksi->remote_cid = pcb->remote_address.cid;
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vsocksi->remote_port = pcb->remote_address.port;
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break;
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}
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case PF_SYSTEM:
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if (SOCK_PROTO(so) == SYSPROTO_EVENT) {
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struct kern_event_pcb *ev_pcb =
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(struct kern_event_pcb *)so->so_pcb;
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struct kern_event_info *kesi =
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&si->soi_proto.pri_kern_event;
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si->soi_kind = SOCKINFO_KERN_EVENT;
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kesi->kesi_vendor_code_filter =
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ev_pcb->evp_vendor_code_filter;
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kesi->kesi_class_filter = ev_pcb->evp_class_filter;
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kesi->kesi_subclass_filter = ev_pcb->evp_subclass_filter;
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} else if (SOCK_PROTO(so) == SYSPROTO_CONTROL) {
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kctl_fill_socketinfo(so, si);
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}
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break;
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case PF_ROUTE:
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case PF_PPP:
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default:
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break;
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}
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out:
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socket_unlock(so, 0);
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return error;
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}
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