mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-08-21 09:02:17 +00:00
Merge 99b069c11b into f1e83d5240
This commit is contained in:
Hugues Morisset
GitHub
commit
822fad23d7
1 changed files with 124 additions and 127 deletions
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@ -18,6 +18,9 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/bsr.h"
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#include "libc/intrin/newbie.h"
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#include "libc/limits.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sock/ifaddrs.h"
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#include "libc/sock/sock.h"
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@ -29,17 +32,23 @@
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#include "libc/sysv/consts/iff.h"
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/* example output:
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eth0
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addr: 10.10.10.237
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netmask: 255.255.255.0
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broadcast: 10.10.10.255
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flags: IFF_UP IFF_BROADCAST IFF_MULTICAST IFF_RUNNING
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lo
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addr: 127.0.0.1
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netmask: 255.0.0.0
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flags: IFF_UP IFF_LOOPBACK IFF_RUNNING */
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vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
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inet6 fe80::fc54:ff:fefe:70d prefixlen 64 flags<128> class 0x20<link> ifidx 38
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vnet1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
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inet6 fe80::fc54:ff:fe6a:6545 prefixlen 64 flags<128> class 0x20<link> ifidx 44
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enp51s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
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inet6 fe80::ce3f:bd13:34ea:c170 prefixlen 64 flags<128> class 0x20<link> ifidx 43
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inet 192.168.1.2 netmask 255.255.255.0 broadcast 192.168.1.255
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wlp0s20f3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
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inet6 fe80::9e1f:6462:15e2:2bf7 prefixlen 64 flags<128> class 0x20<link> ifidx 3
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inet 192.168.1.95 netmask 255.255.255.0 broadcast 192.168.1.255
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lo: flags=73<UP,RUNNING,LOOPBACK>
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inet6 ::1 prefixlen 128 flags<128> class 0x10<host>
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inet 127.0.0.1 netmask 255.0.0.0
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virbr1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
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inet 192.168.121.1 netmask 255.255.255.0 broadcast 192.168.121.255
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virbr0: flags=4099<UP,BROADCAST,MULTICAST>
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inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 */
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const char *sockaddr2str(const struct sockaddr *sa, char *buf, size_t size) {
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if (sa->sa_family == AF_INET) {
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@ -53,8 +62,84 @@ const char *sockaddr2str(const struct sockaddr *sa, char *buf, size_t size) {
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}
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}
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int main(int argc, char *argv[]) {
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void print_ifaddr(struct ifaddrs *ifa) {
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char buf[128];
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if (ifa->ifa_addr->sa_family == AF_INET) {
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if (sockaddr2str(ifa->ifa_addr, buf, sizeof(buf))) {
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tinyprint(1, " inet ", buf, NULL);
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}
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if (sockaddr2str(ifa->ifa_netmask, buf, sizeof(buf))) {
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tinyprint(1, " netmask ", buf, NULL);
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}
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if ((ifa->ifa_flags & IFF_BROADCAST) &&
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sockaddr2str(ifa->ifa_broadaddr, buf, sizeof(buf))) {
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tinyprint(1, " broadcast ", buf, NULL);
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} else if ((ifa->ifa_flags & IFF_POINTOPOINT) &&
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sockaddr2str(ifa->ifa_dstaddr, buf, sizeof(buf))) {
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tinyprint(1, " dstaddr ", buf, NULL);
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}
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} else if (ifa->ifa_addr->sa_family == AF_INET6) {
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if (sockaddr2str(ifa->ifa_addr, buf, sizeof(buf))) {
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tinyprint(1, " inet6 ", buf, NULL);
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}
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uint128_t netmask = ~be128toh(*((uint128_t *)(&(
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((const struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr))));
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int prefixlen = 128;
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if (netmask > 0) {
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uint64_t hi = (uint64_t)(netmask >> 64);
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prefixlen = (hi > 0) ? (63 - bsrl(hi)) : (127 - bsrl((uint64_t)netmask));
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}
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FormatUint64(buf, prefixlen);
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tinyprint(1, " prefixlen ", buf, NULL);
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int aflags = ((int *)ifa->ifa_data)[1];
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FormatUint64(buf, aflags);
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tinyprint(1, " flags<", buf, ">", NULL);
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int scope = ((((int *)ifa->ifa_data)[0]) / 16) % 5;
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// #define IPV6_ADDR_GLOBAL 0x0000U
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// #define IPV6_ADDR_LOOPBACK 0x0010U
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// #define IPV6_ADDR_LINKLOCAL 0x0020U
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// #define IPV6_ADDR_SITELOCAL 0x0040U
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char *addr_types[] = {"global", "host", "link", "??", "site"};
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buf[0] = '0' + scope;
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buf[1] = '\0';
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tinyprint(1, " class 0x", buf, "0<", addr_types[scope], ">", NULL);
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if (scope == 2 || scope == 4) { // linklocal or sitelocal
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FormatUint64(buf,
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((const struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id);
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tinyprint(1, " ifidx ", buf, NULL);
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}
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}
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tinyprint(1, "\n", NULL);
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}
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void print_iface(struct ifaddrs *ifa) {
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char buf[32];
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FormatUint64(buf, ifa->ifa_flags);
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tinyprint(1, ifa->ifa_name, ": flags=", buf, "<", NULL);
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char *sflags[] = {"UP", "BROADCAST", "POINTOPOINT", "RUNNING",
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"DEBUG", "LOOPBACK", "MULTICAST", "ALLMULTI",
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"NOARP", "IPROMISC"};
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int iflags[] = {IFF_UP, IFF_BROADCAST, IFF_POINTOPOINT, IFF_RUNNING,
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IFF_DEBUG, IFF_LOOPBACK, IFF_MULTICAST, IFF_ALLMULTI,
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IFF_NOARP, IFF_PROMISC};
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int first = 1;
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for (int i = 0; i < (sizeof(sflags) / sizeof(*sflags)); i++) {
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if (ifa->ifa_flags & iflags[i]) {
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if (!first) {
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tinyprint(1, ",", NULL);
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}
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first = 0;
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tinyprint(1, sflags[i], NULL);
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}
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}
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tinyprint(1, ">\n", NULL);
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}
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int main(int argc, char *argv[]) {
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// get network interface list
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struct ifaddrs *ifaddrs;
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if (getifaddrs(&ifaddrs)) {
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@ -62,124 +147,36 @@ int main(int argc, char *argv[]) {
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exit(1);
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}
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struct ifaddrs *ifaddrs_next_if = ifaddrs;
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struct ifaddrs *ifaddrs_curr_if = NULL;
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struct ifaddrs *ifa = NULL;
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int first = 1;
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// print network interface list
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for (struct ifaddrs *ifa = ifaddrs; ifa; ifa = ifa->ifa_next) {
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tinyprint(1, ifa->ifa_name, "\n", NULL);
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char buf[128];
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if (sockaddr2str(ifa->ifa_addr, buf, sizeof(buf))) {
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tinyprint(1, "addr: ", buf, "\n", NULL);
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while (ifa || ifaddrs_next_if) {
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if (!ifa) {
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if (!first) {
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tinyprint(1, "\n", NULL);
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first = 0;
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}
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ifaddrs_curr_if = ifaddrs_next_if;
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ifa = ifaddrs_next_if;
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ifaddrs_next_if = NULL;
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print_iface(ifa);
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}
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if (sockaddr2str(ifa->ifa_netmask, buf, sizeof(buf))) {
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tinyprint(1, "netmask: ", buf, "\n", NULL);
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if (strcmp(ifa->ifa_name, ifaddrs_curr_if->ifa_name)) {
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if (!ifaddrs_next_if) {
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struct ifaddrs *ifa2 = ifaddrs;
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while (ifa2 != ifa && strcmp(ifa->ifa_name, ifa2->ifa_name)) {
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ifa2 = ifa2->ifa_next;
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}
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if (ifa2 == ifa) {
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ifaddrs_next_if = ifa;
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}
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}
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} else {
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print_ifaddr(ifa);
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}
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if ((ifa->ifa_flags & IFF_BROADCAST) &&
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sockaddr2str(ifa->ifa_broadaddr, buf, sizeof(buf))) {
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tinyprint(1, "broadcast: ", buf, "\n", NULL);
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} else if ((ifa->ifa_flags & IFF_POINTOPOINT) &&
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sockaddr2str(ifa->ifa_dstaddr, buf, sizeof(buf))) {
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tinyprint(1, "dstaddr: ", buf, "\n", NULL);
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}
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if (ifa->ifa_addr->sa_family == AF_INET6) {
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int scope = ((int *)ifa->ifa_data)[0];
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int aflags = ((int *)ifa->ifa_data)[1];
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// #define IPV6_ADDR_LOOPBACK 0x0010U
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// #define IPV6_ADDR_LINKLOCAL 0x0020U
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// #define IPV6_ADDR_SITELOCAL 0x0040U
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// #define IFA_F_TEMPORARY 0x01
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// #define IFA_F_NODAD 0x02
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// #define IFA_F_OPTIMISTIC 0x04
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// #define IFA_F_DADFAILED 0x08
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// #define IFA_F_HOMEADDRESS 0x10
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// #define IFA_F_DEPRECATED 0x20
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// #define IFA_F_TENTATIVE 0x40
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// #define IFA_F_PERMANENT 0x80
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// #define IFA_F_MANAGETEMPADDR 0x100
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// #define IFA_F_NOPREFIXROUTE 0x200
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// #define IFA_F_MCAUTOJOIN 0x400
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// #define IFA_F_STABLE_PRIVACY 0x800
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tinyprint(1, "scope:", NULL);
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if (scope == 0x10) {
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tinyprint(1, " loopback", NULL);
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}
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if (scope == 0x20) {
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tinyprint(1, " linklocal", NULL);
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}
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if (scope == 0x40) {
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tinyprint(1, " sitelocal", NULL);
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}
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if (scope == 0x00) {
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tinyprint(1, " global", NULL);
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}
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tinyprint(1, "\n", NULL);
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tinyprint(1, "addr flags:", NULL);
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if (aflags & 0x01) {
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tinyprint(1, " temporary", NULL);
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}
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if (aflags & 0x02) {
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tinyprint(1, " nodad", NULL);
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}
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if (aflags & 0x04) {
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tinyprint(1, " optimistic", NULL);
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}
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if (aflags & 0x08) {
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tinyprint(1, " dadfailed", NULL);
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}
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if (aflags & 0x10) {
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tinyprint(1, " homeaddress", NULL);
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}
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if (aflags & 0x20) {
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tinyprint(1, " deprecated", NULL);
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}
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if (aflags & 0x40) {
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tinyprint(1, " tentative", NULL);
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}
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if (aflags & 0x80) {
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tinyprint(1, " permanent", NULL);
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}
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if (aflags & 0x100) {
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tinyprint(1, " managetempaddr", NULL);
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}
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if (aflags & 0x200) {
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tinyprint(1, " noprefixroute", NULL);
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}
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if (aflags & 0x400) {
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tinyprint(1, " mcautojoin", NULL);
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}
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if (aflags & 0x800) {
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tinyprint(1, " stable_privacy", NULL);
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}
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tinyprint(1, "\n", NULL);
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}
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tinyprint(1, "flags:", NULL);
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if (ifa->ifa_flags & IFF_UP) {
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tinyprint(1, " IFF_UP", NULL);
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}
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if (ifa->ifa_flags & IFF_DEBUG) {
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tinyprint(1, " IFF_DEBUG", NULL);
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}
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if (ifa->ifa_flags & IFF_LOOPBACK) {
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tinyprint(1, " IFF_LOOPBACK", NULL);
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}
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if (ifa->ifa_flags & IFF_MULTICAST) {
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tinyprint(1, " IFF_MULTICAST", NULL);
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}
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if (ifa->ifa_flags & IFF_ALLMULTI) {
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tinyprint(1, " IFF_ALLMULTI", NULL);
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}
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if (ifa->ifa_flags & IFF_NOARP) {
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tinyprint(1, " IFF_NOARP", NULL);
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}
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if (ifa->ifa_flags & IFF_PROMISC) {
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tinyprint(1, " IFF_PROMISC", NULL);
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}
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tinyprint(1, "\n", NULL);
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tinyprint(1, "\n", NULL);
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ifa = ifa->ifa_next;
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}
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// perform cleanup
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