diff options
Diffstat (limited to 'interface.c')
| -rw-r--r-- | interface.c | 171 |
1 files changed, 168 insertions, 3 deletions
diff --git a/interface.c b/interface.c index fafc32d4..75d975f9 100644 --- a/interface.c +++ b/interface.c @@ -4,14 +4,19 @@ * This module was implemented by George M. Sipe <gsipe@mindspring.com> * or <gsipe@acm.org> and is: * - * Copyright (c) 1996,1997 by George M. Sipe - ALL RIGHTS RESERVED + * Copyright (c) 1996,1997 by George M. Sipe + * + * FreeBSD specific portions written by and Copyright (c) 1999 + * Andy Doran <ad@psn.ie>. * * This 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; version 2, or (at your option) any later version. */ +#include <sys/types.h> +#include <sys/param.h> -#if defined(linux) && !defined(INET6) +#if (defined(linux) && !defined(INET6)) || defined(__FreeBSD__) #include "config.h" #include <stdio.h> @@ -27,6 +32,14 @@ #include <netinet/in.h> #include <arpa/inet.h> #include <net/if.h> +#if defined(__FreeBSD__) +#if __FreeBSD_version >= 300001 +#include <net/if_var.h> +#endif +#include <kvm.h> +#include <nlist.h> +#include <sys/fcntl.h> +#endif #include "config.h" #include "fetchmail.h" #include "i18n.h" @@ -66,6 +79,9 @@ void interface_init(void) } } + +#if defined(linux) + static int _get_ifinfo_(int socket_fd, FILE *stats_file, const char *ifname, ifinfo_t *ifinfo) /* get active network interface information - return non-zero upon success */ @@ -156,6 +172,155 @@ static int get_ifinfo(const char *ifname, ifinfo_t *ifinfo) return(result); } +#elif defined __FreeBSD__ + +static kvm_t *kvmfd; +static struct nlist symbols[] = +{ + {"_ifnet"}, + {NULL} +}; +static u_long ifnet_savedaddr; +static gid_t if_rgid; +static gid_t if_egid; + +void +interface_set_gids(gid_t egid, gid_t rgid) +{ + if_rgid = rgid; + if_egid = egid; +} + +static int +openkvm(void) +{ + if ((kvmfd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL)) == NULL) + return FALSE; + + if (kvm_nlist(kvmfd, symbols) < 0) + return FALSE; + + if (kvm_read(kvmfd, (unsigned long) symbols[0].n_value, &ifnet_savedaddr, sizeof(unsigned long)) == -1) + return FALSE; + + return TRUE; +} + +static int +get_ifinfo(const char *ifname, ifinfo_t *ifinfo) +{ + char tname[16]; + char iname[16]; + struct ifnet ifnet; + unsigned long ifnet_addr = ifnet_savedaddr; +#if __FreeBSD_version >= 300001 + struct ifnethead ifnethead; + struct ifaddrhead ifaddrhead; +#endif + struct ifaddr ifaddr; + unsigned long ifaddr_addr; + struct sockaddr sa; + unsigned long sa_addr; + uint i; + + if (if_egid) + setegid(if_egid); + + for (i = 0; ifname[i] && ifname[i] != '/'; i++) + iname[i] = ifname[i]; + + iname[i] = '\0'; + + if (!kvmfd) + { + if (!openkvm()) + { + report(stderr, 0, _("Unable to open kvm interface. Make sure fetchmail is SGID kmem.")); + if (if_egid) + setegid(if_rgid); + exit(1); + } + } + +#if __FreeBSD_version >= 300001 + kvm_read(kvmfd, ifnet_savedaddr, (char *) &ifnethead, sizeof ifnethead); + ifnet_addr = (u_long) ifnethead.tqh_first; +#else + ifnet_addr = ifnet_savedaddr; +#endif + + while (ifnet_addr) + { + kvm_read(kvmfd, ifnet_addr, &ifnet, sizeof(ifnet)); + kvm_read(kvmfd, (unsigned long) ifnet.if_name, tname, sizeof tname); + snprintf(tname, sizeof tname - 1, "%s%d", tname, ifnet.if_unit); + + if (!strcmp(tname, iname)) + { + if (!(ifnet.if_flags & IFF_UP)) + { + if (if_egid) + setegid(if_rgid); + return 0; + } + + ifinfo->rx_packets = ifnet.if_ipackets; + ifinfo->tx_packets = ifnet.if_opackets; + +#if __FreeBSD_version >= 300001 + ifaddr_addr = (u_long) ifnet.if_addrhead.tqh_first; +#else + ifaddr_addr = (u_long) ifnet.if_addrlist; +#endif + + while(ifaddr_addr) + { + kvm_read(kvmfd, ifaddr_addr, &ifaddr, sizeof(ifaddr)); + kvm_read(kvmfd, (u_long)ifaddr.ifa_addr, &sa, sizeof(sa)); + + if (sa.sa_family != AF_INET) + { +#if __FreeBSD_version >= 300001 + ifaddr_addr = (u_long) ifaddr.ifa_link.tqe_next; +#else + ifaddr_addr = (u_long) ifaddr.ifa_next; +#endif + continue; + } + + ifinfo->addr.s_addr = *(u_long *)(sa.sa_data + 2); + kvm_read(kvmfd, (u_long)ifaddr.ifa_dstaddr, &sa, sizeof(sa)); + ifinfo->dstaddr.s_addr = *(u_long *)(sa.sa_data + 2); + kvm_read(kvmfd, (u_long)ifaddr.ifa_netmask, &sa, sizeof(sa)); + ifinfo->netmask.s_addr = *(u_long *)(sa.sa_data + 2); + + if (if_egid) + setegid(if_rgid); + + return 1; + } + + if (if_egid) + setegid(if_rgid); + + return 0; + } + +#if __FreeBSD_version >= 300001 + ifnet_addr = (u_long) ifnet.if_link.tqe_next; +#else + ifnet_addr = (unsigned long) ifnet.if_next; +#endif + } + + if (if_egid) + setegid(if_rgid); + + return 0; +} +#endif /* defined __FreeBSD__ */ + + #ifndef HAVE_INET_ATON /* * Note: This is not a true replacement for inet_aton(), as it won't @@ -313,4 +478,4 @@ int interface_approve(struct hostdata *hp) return(TRUE); } -#endif /* defined(linux) && !defined(INET6) */ +#endif /* (defined(linux) && !defined(INET6)) || defined(__FreeBSD__) */ |