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Initial implementation of ioctl SIOCGIFCONF. Untested for most of the platforms yet.
This commit is contained in:
Fabrizio Bertocci
parent
f40f97bd07
commit
187eb9ae41
5 changed files with 177 additions and 0 deletions
61
libc/calls/ioctl-siocgifconf-nt.c
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61
libc/calls/ioctl-siocgifconf-nt.c
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@ -0,0 +1,61 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/errfuns.h"
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#include "libc/nt/winsock.h"
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// TODO: Remove me
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#include "libc/stdio/stdio.h"
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#define MAX_INTERFACES 32
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/* Reference:
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* - Description of ioctls: https://docs.microsoft.com/en-us/windows/win32/winsock/winsock-ioctls
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* - Structure INTERFACE_INFO: https://docs.microsoft.com/en-us/windows/win32/api/ws2ipdef/ns-ws2ipdef-interface_info
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* - WSAIoctl man page: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-wsaioctl
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* - Using SIOCGIFCONF in Win32: https://docs.microsoft.com/en-us/windows/win32/winsock/using-unix-ioctls-in-winsock
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*/
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textwindows int ioctl_siocgifconf_nt(int fd, struct ifconf *ifc) {
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struct NtInterfaceInfo iflist[MAX_INTERFACES];
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uint32_t dwBytes;
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int ret;
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int i, count;
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if (g_fds.p[fd].kind != kFdSocket) {
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return ebadf();
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}
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ret = WSAIoctl(g_fds.p[fd].handle, kNtSioGetInterfaceList, NULL, 0, &iflist, sizeof(iflist), &dwBytes, NULL, NULL);
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if (ret == -1) {
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return __winsockerr();
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}
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count = dwBytes / sizeof(struct NtInterfaceInfo);
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printf("CI> SIO_GET_INTERFACE_LIST success:\n");
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for (i = 0; i < count; ++i) {
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printf("CI>\t #i: %08x\n", i, iflist[i].iiAddress.sin_addr.s_addr);
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}
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return ret;
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}
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51
libc/calls/ioctl-siocgifconf.c
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51
libc/calls/ioctl-siocgifconf.c
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@ -0,0 +1,51 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/sio.h"
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int ioctl_siocgifconf_nt(int, struct ifconf *) hidden;
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static int ioctl_siocgifconf_sysv(int fd, struct ifconf *ifc) {
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/* Same as the default for now... */
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return sys_ioctl(fd, SIOCGIFCONF, ifc);
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/*
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int rc;
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if ((rc = sys_ioctl(fd, SIOCGIFCONF, &ifc)) != -1) {
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return rc;
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}
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return rc;
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*/
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}
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/**
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* Returns information about network interfaces.
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*
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* @see ioctl(fd, SIOCGIFCONF, tio) dispatches here
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*/
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int ioctl_siocgifconf(int fd, struct ifconf *ifc) {
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if (!IsWindows()) {
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return ioctl_siocgifconf_sysv(fd, ifc);
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} else {
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return ioctl_siocgifconf_nt(fd, ifc);
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}
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}
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@ -2,6 +2,7 @@
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#define COSMOPOLITAN_LIBC_CALLS_IOCTL_H_
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#include "libc/macros.internal.h"
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#include "libc/sysv/consts/termios.h"
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#include "libc/sysv/consts/sio.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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@ -27,6 +28,7 @@ int ioctl(int, uint64_t, void *);
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if (CMP(request, TCSETS)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
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if (CMP(request, TCSETSW)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
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if (CMP(request, TCSETSF)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
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if (CMP(request, SIOCGIFCONF)) return ioctl_siocgifconf(FD, REQUEST, MEMORY); \
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} while (0)
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int ioctl_tcgets(int, void *);
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@ -37,6 +39,7 @@ int ioctl_tiocgwinsz(int, void *);
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int ioctl_tiocgwinsz_nt(int, void *);
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int ioctl_tiocswinsz(int, void *);
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int ioctl_tiocswinsz_nt(int, void *);
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int ioctl_siocgifconf(int, uint64_t, void *);
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int ioctl_default(int, uint64_t, void *);
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forceinline int ioctl_dispatch(int fd, uint64_t request, void *memory) {
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@ -85,6 +85,7 @@
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#define kNtSioTranslateHandle 0xC800000Du
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#define kNtSioUdpConnreset 0x9800000Cu
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#define kNtSioUdpNetreset 0x9800000Fu
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#define kNtSioGetInterfaceList 0x4008747fu /* _IOR('t', 127, ULONG) */
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#define kNtNspNotifyImmediately 0
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#define kNtNspNotifyHwnd 1
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@ -311,6 +312,13 @@ struct NtFdSet {
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int64_t fd_array[64];
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};
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struct NtInterfaceInfo {
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uint64_t iiFlags;
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struct sockaddr_in iiAddress;
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struct sockaddr_in iiBroadcastAddress;
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struct sockaddr_in iiNetmask;
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};
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/**
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* Winsock2 prototypes.
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*
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@ -75,6 +75,60 @@ struct msghdr { /* Linux+NT ABI */
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uint32_t msg_flags; /* MSG_XXX */
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};
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/*
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* Structure used in SIOCGIFCONF request.
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* Used to retrieve interface configuration
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* for machine (useful for programs which
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* must know all networks accessible).
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*/
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struct ifconf {
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int ifc_len; /* size of buffer */
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union {
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char *ifcu_buf;
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struct ifreq *ifcu_req;
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} ifc_ifcu;
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};
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/* Shortcuts to the ifconf buffer or ifreq array */
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#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
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#define ifc_req ifc_ifcu.ifcu_req /* array of structures */
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#define IFHWADDRLEN 6
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#define IF_NAMESIZE 16
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#define IFNAMSIZ IF_NAMESIZE
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struct ifreq {
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union {
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char ifrn_name[IFNAMSIZ]; /* Interface name, e.g. "en0". */
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} ifr_ifrn;
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union {
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struct sockaddr ifru_addr;
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struct sockaddr ifru_dstaddr;
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struct sockaddr ifru_broadaddr;
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short int ifru_flags;
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int ifru_ivalue;
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int ifru_mtu;
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} ifr_ifru;
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};
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# define ifr_name ifr_ifrn.ifrn_name /* interface name */
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# define ifr_addr ifr_ifru.ifru_addr /* address */
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# define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
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# define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
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# define ifr_flags ifr_ifru.ifru_flags /* flags */
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# define ifr_metric ifr_ifru.ifru_ivalue /* metric */
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# define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
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# define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
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# define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
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# define ifr_qlen ifr_ifru.ifru_ivalue /* queue length */
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# define _IOT_ifreq _IOT(_IOTS(char),IFNAMSIZ,_IOTS(char),16,0,0)
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# define _IOT_ifreq_short _IOT(_IOTS(char),IFNAMSIZ,_IOTS(short),1,0,0)
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# define _IOT_ifreq_int _IOT(_IOTS(char),IFNAMSIZ,_IOTS(int),1,0,0)
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#define IFF_UP (1<<0)
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const char *inet_ntop(int, const void *, char *, uint32_t);
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int inet_aton(const char *, struct in_addr *);
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int inet_pton(int, const char *, void *);
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