diff options
Diffstat (limited to 'third_party/heimdal/lib/roken/getifaddrs_w32.c')
| -rw-r--r-- | third_party/heimdal/lib/roken/getifaddrs_w32.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/getifaddrs_w32.c b/third_party/heimdal/lib/roken/getifaddrs_w32.c new file mode 100644 index 0000000..beb29b3 --- /dev/null +++ b/third_party/heimdal/lib/roken/getifaddrs_w32.c @@ -0,0 +1,161 @@ +/*********************************************************************** + * Copyright (c) 2009, Secure Endpoints Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + **********************************************************************/ + +#include<config.h> + +#include <roken.h> + +#include <ifaddrs.h> + +#ifndef _WIN32 +#error This is a Windows specific implementation. +#endif + +static struct sockaddr * +dupaddr(const sockaddr_gen * src) +{ + sockaddr_gen * d = malloc(sizeof(*d)); + + if (d) { + memcpy(d, src, sizeof(*d)); + } + + return (struct sockaddr *) d; +} + +int ROKEN_LIB_FUNCTION +rk_getifaddrs(struct ifaddrs **ifpp) +{ + SOCKET s = INVALID_SOCKET; + size_t il_len = 8192; + int ret = -1; + INTERFACE_INFO *il = NULL; + + *ifpp = NULL; + + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s == INVALID_SOCKET) + return -1; + + for (;;) { + DWORD cbret = 0; + + il = malloc(il_len); + if (!il) + break; + + ZeroMemory(il, il_len); + + if (WSAIoctl(s, SIO_GET_INTERFACE_LIST, NULL, 0, + (LPVOID) il, (DWORD) il_len, &cbret, + NULL, NULL) == 0) { + il_len = cbret; + break; + } + + free (il); + il = NULL; + + if (WSAGetLastError() == WSAEFAULT && cbret > il_len) { + il_len = cbret; + } else { + break; + } + } + + if (!il) + goto _exit; + + /* il is an array of INTERFACE_INFO structures. il_len has the + actual size of the buffer. The number of elements is + il_len/sizeof(INTERFACE_INFO) */ + + { + size_t n = il_len / sizeof(INTERFACE_INFO); + size_t i; + + for (i = 0; i < n; i++ ) { + struct ifaddrs *ifp; + + ifp = malloc(sizeof(*ifp)); + if (ifp == NULL) + break; + + ZeroMemory(ifp, sizeof(*ifp)); + + ifp->ifa_next = NULL; + ifp->ifa_name = NULL; + ifp->ifa_flags = il[i].iiFlags; + ifp->ifa_addr = dupaddr(&il[i].iiAddress); + ifp->ifa_netmask = dupaddr(&il[i].iiNetmask); + ifp->ifa_broadaddr = dupaddr(&il[i].iiBroadcastAddress); + ifp->ifa_data = NULL; + + *ifpp = ifp; + ifpp = &ifp->ifa_next; + } + + if (i == n) + ret = 0; + } + + _exit: + + if (s != INVALID_SOCKET) + closesocket(s); + + if (il) + free (il); + + return ret; +} + +void ROKEN_LIB_FUNCTION +rk_freeifaddrs(struct ifaddrs *ifp) +{ + struct ifaddrs *p, *q; + + for(p = ifp; p; ) { + if (p->ifa_name) + free(p->ifa_name); + if(p->ifa_addr) + free(p->ifa_addr); + if(p->ifa_dstaddr) + free(p->ifa_dstaddr); + if(p->ifa_netmask) + free(p->ifa_netmask); + if(p->ifa_data) + free(p->ifa_data); + q = p; + p = p->ifa_next; + free(q); + } +} |