diff options
Diffstat (limited to 'source3/lib/interfaces.c')
-rw-r--r-- | source3/lib/interfaces.c | 258 |
1 files changed, 181 insertions, 77 deletions
diff --git a/source3/lib/interfaces.c b/source3/lib/interfaces.c index 632b38f2b6..c56155c64e 100644 --- a/source3/lib/interfaces.c +++ b/source3/lib/interfaces.c @@ -101,6 +101,7 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) struct ifaddrs *iflist = NULL; struct ifaddrs *ifptr = NULL; int total = 0; + size_t copy_size; if (getifaddrs(&iflist) < 0) { return -1; @@ -111,25 +112,40 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) ifptr != NULL && total < max_interfaces; ifptr = ifptr->ifa_next) { + memset(&ifaces[total], '\0', sizeof(ifaces[total])); + + copy_size = sizeof(struct sockaddr_in); + if (!ifptr->ifa_addr || !ifptr->ifa_netmask) { continue; } - /* Skip ipv6 for now. */ - if (ifptr->ifa_addr->sa_family != AF_INET) { - continue; - } - if (!(ifptr->ifa_flags & IFF_UP)) { + ifaces[total].flags = ifptr->ifa_flags; + + /* Check the interface is up. */ + if (!(ifaces[total].flags & IFF_UP)) { continue; } - ifaces[total].sa_family = ifptr->ifa_addr->sa_family; - - ifaces[total].iface_addr.ip = - ((struct sockaddr_in *)ifptr->ifa_addr)->sin_addr; +#ifdef AF_INET6 + if (ifptr->ifa_addr->sa_family == AF_INET6) { + copy_size = sizeof(struct sockaddr_in6); + } +#endif - ifaces[total].iface_netmask.netmask = - ((struct sockaddr_in *)ifptr->ifa_netmask)->sin_addr; + memcpy(&ifaces[total].ip, ifptr->ifa_addr, copy_size); + memcpy(&ifaces[total].netmask, ifptr->ifa_netmask, copy_size); + if (ifaces[total].flags & IFF_BROADCAST) { + memcpy(&ifaces[total].bcast, + ifptr->ifa_broadaddr, + copy_size); + } else if (ifaces[total].flags & IFF_POINTOPOINT) { + memcpy(&ifaces[total].bcast, + ifptr->ifa_dstaddr, + copy_size); + } else { + continue; + } strncpy(ifaces[total].name, ifptr->ifa_name, sizeof(ifaces[total].name)-1); @@ -162,9 +178,6 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) int fd, i, n; struct ifreq *ifr=NULL; int total = 0; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { return -1; @@ -184,32 +197,54 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) /* Loop through interfaces, looking for given IP address */ for (i=n-1;i>=0 && total < max_interfaces;i--) { - if (ioctl(fd, SIOCGIFADDR, &ifr[i]) != 0) { + + memset(&ifaces[total], '\0', sizeof(ifaces[total])); + + /* Check the interface is up. */ + if (ioctl(fd, SIOCGIFFLAGS, &ifr[i]) != 0) { continue; } - iname = ifr[i].ifr_name; - ipaddr = (*(struct sockaddr_in *)&ifr[i].ifr_addr).sin_addr; + ifaces[total].flags = ifr[i].ifr_flags; - if (ioctl(fd, SIOCGIFFLAGS, &ifr[i]) != 0) { + if (!(flags & IFF_UP)) { continue; } - if (!(ifr[i].ifr_flags & IFF_UP)) { + if (ioctl(fd, SIOCGIFADDR, &ifr[i]) != 0) { continue; } + strncpy(ifaces[total].name, ifr[i].ifr_name, + sizeof(ifaces[total].name)-1); + ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; + + memcpy(&ifaces[total].ip, &ifr[i].ifr_addr, + sizeof(struct sockaddr_in)); + if (ioctl(fd, SIOCGIFNETMASK, &ifr[i]) != 0) { continue; } - nmask = ((struct sockaddr_in *)&ifr[i].ifr_addr)->sin_addr; + memcpy(&ifaces[total].netmask, &ifr[i].ifr_netmask, + sizeof(struct sockaddr_in)); + + if (ifaces[total].flags & IFF_BROADCAST) { + if (ioctl(fd, SIOCGIFBRDADDR, &ifr[i]) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifr[i].ifr_broadaddr, + sizeof(struct sockaddr_in)); + } else if (ifaces[total].flags & IFF_POINTOPOINT) { + if (ioctl(fd, SIOCGIFDSTADDR, &ifr[i]) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifr[i].ifr_dstaddr, + sizeof(struct sockaddr_in)); + } else { + continue; + } - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].sa_family = AF_INET; - ifaces[total].iface_addr.ip = ipaddr; - ifaces[total].iface_netmask.netmask = nmask; total++; } @@ -239,9 +274,6 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) int fd, i, n; struct ifreq *ifr=NULL; int total = 0; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { return -1; @@ -271,6 +303,9 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) /* Loop through interfaces */ for (i = 0; i<n && total < max_interfaces; i++) { + + memset(&ifaces[total], '\0', sizeof(ifaces[total])); + ifreq = ifr[i]; strioctl.ic_cmd = SIOCGIFFLAGS; @@ -280,7 +315,9 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) continue; } - if (!(ifreq.ifr_flags & IFF_UP)) { + ifaces[total].flags = ifreq.ifr_flags; + + if (!(ifaces[total].flags & IFF_UP)) { continue; } @@ -291,8 +328,12 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) continue; } - ipaddr = (*(struct sockaddr_in *) &ifreq.ifr_addr).sin_addr; - iname = ifreq.ifr_name; + strncpy(ifaces[total].name, iname, + sizeof(ifaces[total].name)-1); + ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; + + memcpy(&ifaces[total].ip, &ifreq.ifr_addr, + sizeof(struct sockaddr_in)); strioctl.ic_cmd = SIOCGIFNETMASK; strioctl.ic_dp = (char *)&ifreq; @@ -301,13 +342,30 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) continue; } - nmask = ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr; + memcpy(&ifaces[total].netmask, &ifreq.ifr_addr, + sizeof(struct sockaddr_in)); - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].sa_family = AF_INET; - ifaces[total].iface_addr.ip = ipaddr; - ifaces[total].iface_netmask.netmask = nmask; + if (ifaces[total].flags & IFF_BROADCAST) { + strioctl.ic_cmd = SIOCGIFBRDADDR; + strioctl.ic_dp = (char *)&ifreq; + strioctl.ic_len = sizeof(struct ifreq); + if (ioctl(fd, I_STR, &strioctl) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifreq.ifr_broadaddr, + sizeof(struct sockaddr_in)); + } else if (ifaces[total].flags & IFF_POINTOPOINT) { + strioctl.ic_cmd = SIOCGIFDSTADDR; + strioctl.ic_dp = (char *)&ifreq; + strioctl.ic_len = sizeof(struct ifreq); + if (ioctl(fd, I_STR, &strioctl) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifreq.ifr_dstaddr, + sizeof(struct sockaddr_in)); + } else { + continue; + } total++; } @@ -331,9 +389,6 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) int fd, i; struct ifconf ifc; struct ifreq *ifr=NULL; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; int total = 0; if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { @@ -357,34 +412,54 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) while (i > 0 && total < max_interfaces) { uint_t inc; + memset(&ifaces[total], '\0', sizeof(ifaces[total])); + inc = ifr->ifr_addr.sa_len; - if (ioctl(fd, SIOCGIFADDR, ifr) != 0) { + if (ioctl(fd, SIOCGIFFLAGS, ifr) != 0) { goto next; } - ipaddr = (*(struct sockaddr_in *) &ifr->ifr_addr).sin_addr; - iname = ifr->ifr_name; + ifaces[total].flags = ifr->ifr_flags; - if (ioctl(fd, SIOCGIFFLAGS, ifr) != 0) { + if (!(ifaces[total].flags & IFF_UP)) { goto next; } - if (!(ifr->ifr_flags & IFF_UP)) { + if (ioctl(fd, SIOCGIFADDR, ifr) != 0) { goto next; } + memcpy(&ifaces[total].ip, &ifr->ifr_addr, + sizeof(struct sockaddr_in)); + + strncpy(ifaces[total].name, ifr->ifr_name, + sizeof(ifaces[total].name)-1); + ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; + if (ioctl(fd, SIOCGIFNETMASK, ifr) != 0) { goto next; } - nmask = ((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr; + memcpy(&ifaces[total].netmask, &ifr->ifr_addr, + sizeof(struct sockaddr_in)); + + if (ifaces[total].flags & IFF_BROADCAST) { + if (ioctl(fd, SIOCGIFBRDADDR, &ifr[i]) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifr[i].ifr_broadaddr, + sizeof(struct sockaddr_in)); + } else if (ifaces[total].flags & IFF_POINTOPOINT) { + if (ioctl(fd, SIOCGIFDSTADDR, &ifr[i]) != 0) { + continue; + } + memcpy(&ifaces[total].bcast, &ifr[i].ifr_dstaddr, + sizeof(struct sockaddr_in)); + } else { + continue; + } - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].sa_family = AF_INET; - ifaces[total].iface_addr.ip = ipaddr; - ifaces[total].iface_netmask.netmask = nmask; total++; @@ -421,25 +496,36 @@ static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) static int iface_comp(struct iface_struct *i1, struct iface_struct *i2) { int r; - r = strcmp(i1->name, i2->name); - if (r) { - return r; - } - r = i1->sa_family - i2->sa_family; - if (r) { - return r; - } #ifdef AF_INET6 - if (i1->sa_family == AF_INET6) { - r = memcmp(&i1->iface_addr.ip6, - &i2->iface_addr.ip6, + /* + * If we have IPv6 - sort these interfaces lower + * than any IPv4 ones. + */ + if (i1->ip.ss_family == AF_INET6 && + i2->ip.ss_family == AF_INET) { + return -1; + } else if (i1->ip.ss_family == AF_INET && + i2->ip.ss_family == AF_INET6) { + return 1; + } + + if (i1->ip.ss_family == AF_INET6) { + struct sockaddr_in6 *s1 = (struct sockaddr_in6 *)&i1->ip; + struct sockaddr_in6 *s2 = (struct sockaddr_in6 *)&i2->ip; + + r = memcmp(&s1->sin6_addr, + &s2->sin6_addr, sizeof(struct in6_addr)); if (r) { return r; } - r = memcmp(&i1->iface_netmask.netmask6, - &i1->iface_netmask.netmask6, + + s1 = (struct sockaddr_in6 *)&i1->netmask; + s2 = (struct sockaddr_in6 *)&i2->netmask; + + r = memcmp(&s1->sin6_addr, + &s2->sin6_addr, sizeof(struct in6_addr)); if (r) { return r; @@ -447,14 +533,21 @@ static int iface_comp(struct iface_struct *i1, struct iface_struct *i2) } #endif - if (i1->sa_family == AF_INET) { - r = ntohl(i1->iface_addr.ip.s_addr) - - ntohl(i2->iface_addr.ip.s_addr); + if (i1->ip.ss_family == AF_INET) { + struct sockaddr_in *s1 = (struct sockaddr_in *)&i1->ip; + struct sockaddr_in *s2 = (struct sockaddr_in *)&i2->ip; + + r = ntohl(s1->sin_addr.s_addr) - + ntohl(s2->sin_addr.s_addr); if (r) { return r; } - r = ntohl(i1->iface_netmask.netmask.s_addr) - - ntohl(i2->iface_netmask.netmask.s_addr); + + s1 = (struct sockaddr_in *)&i1->netmask; + s2 = (struct sockaddr_in *)&i2->netmask; + + r = ntohl(s1->sin_addr.s_addr) - + ntohl(s2->sin_addr.s_addr); } return r; } @@ -503,15 +596,26 @@ int get_interfaces(struct iface_struct *ifaces, int max_interfaces) for (i=0;i<total;i++) { char addr[INET6_ADDRSTRLEN]; + int ret; printf("%-10s ", ifaces[i].name); - printf("IP=%s ", inet_ntop(ifaces[i].sa_family, - (const void *)&ifaces[i].iface_addr.ip, - addr, - sizeof(addr))); - printf("NETMASK=%s\n", inet_ntop(ifaces[i].sa_family, - (const void *)&ifaces[i].iface_netmask.netmask, - addr, - sizeof(addr))); + addr[0] = '\0'; + ret = getnameinfo((struct sockaddr *)&ifaces[i].ip, + sizeof(ifaces[i].ip), + addr, sizeof(addr), + NULL, 0, NI_NUMERICHOST); + printf("IP=%s ", addr); + addr[0] = '\0'; + ret = getnameinfo((struct sockaddr *)&ifaces[i].netmask, + sizeof(ifaces[i].netmask), + addr, sizeof(addr), + NULL, 0, NI_NUMERICHOST); + printf("NETMASK=%s ", addr); + addr[0] = '\0'; + ret = getnameinfo((struct sockaddr *)&ifaces[i].bcast, + sizeof(ifaces[i].bcast), + addr, sizeof(addr), + NULL, 0, NI_NUMERICHOST); + printf("BCAST=%s\n", addr); } return 0; } |