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-rw-r--r--toys/other/ifconfig.c505
1 files changed, 505 insertions, 0 deletions
diff --git a/toys/other/ifconfig.c b/toys/other/ifconfig.c
new file mode 100644
index 00000000..92085d0c
--- /dev/null
+++ b/toys/other/ifconfig.c
@@ -0,0 +1,505 @@
+/* ifconfig.c - Configure network interface.
+ *
+ * Copyright 2012 Ranjan Kumar <ranjankumar.bth@gmail.com>
+ * Copyright 2012 Kyungwan Han <asura321@gamil.com>
+ * Reviewed by Kyungsu Kim <kaspyx@gmail.com>
+ *
+ * Not in SUSv4.
+
+USE_IFCONFIG(NEWTOY(ifconfig, "?a", TOYFLAG_BIN))
+
+config IFCONFIG
+ bool "ifconfig"
+ default y
+ help
+ usage: ifconfig [-a] interface [address]
+
+ Configure network interface.
+
+ [add ADDRESS[/PREFIXLEN]]
+ [del ADDRESS[/PREFIXLEN]]
+ [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]
+ [netmask ADDRESS] [dstaddr ADDRESS]
+ [outfill NN] [keepalive NN]
+ [hw ether|infiniband ADDRESS] [metric NN] [mtu NN]
+ [[-]trailers] [[-]arp] [[-]allmulti]
+ [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]
+ [mem_start NN] [io_addr NN] [irq NN]
+ [up|down] ...
+*/
+
+#define FOR_ifconfig
+#include "toys.h"
+
+#include <net/if_arp.h>
+#include <net/ethernet.h>
+
+GLOBALS(
+ int sockfd;
+)
+
+//for ipv6 add/del
+struct ifreq_inet6 {
+ struct in6_addr ifrinte6_addr;
+ uint32_t ifrinet6_prefixlen;
+ int ifrinet6_ifindex;
+};
+
+// Convert hostname to binary address for AF_INET or AF_INET6
+void get_addrinfo(char *host, sa_family_t af, void *addr)
+{
+ struct addrinfo hints, *result, *rp = 0;
+ int status, len;
+ char *from;
+
+ memset(&hints, 0 , sizeof(struct addrinfo));
+ hints.ai_family = af;
+ hints.ai_socktype = SOCK_STREAM;
+
+ status = getaddrinfo(host, NULL, &hints, &result);
+ if (!status)
+ for (rp = result; rp; rp = rp->ai_next)
+ if (rp->ai_family == af) break;
+ if (!rp) error_exit("bad address '%s' : %s", host, gai_strerror(status));
+
+ // You'd think ipv4 and ipv6 would ahve some basic compatability, but no.
+ len = 4;
+ from = ((char *)rp->ai_addr->sa_data) + 2;
+ if (af == AF_INET6) {
+ len = 16;
+ from += 4;
+ }
+ memcpy(addr, from, len);
+ freeaddrinfo(result);
+}
+
+static void display_ifconfig(char *name, int always, unsigned long long val[])
+{
+ struct ifreq ifre;
+ struct {
+ int type;
+ char *title;
+ } types[] = {
+ {ARPHRD_LOOPBACK, "Local Loopback"}, {ARPHRD_ETHER, "Ethernet"},
+ {ARPHRD_PPP, "Point-to-Point Protocol"}, {ARPHRD_INFINIBAND, "InfiniBand"},
+ {ARPHRD_SIT, "IPv6-in-IPv4"}, {-1, "UNSPEC"}
+ };
+ int i;
+ char *pp;
+ FILE *fp;
+ short flags;
+
+ xstrncpy(ifre.ifr_name, name, IFNAMSIZ);
+ if (ioctl(TT.sockfd, SIOCGIFFLAGS, &ifre)<0) perror_exit("%s", name);
+ flags = ifre.ifr_flags;
+ if (!always && !(flags & IFF_UP)) return;
+
+ // query hardware type and hardware address
+ i = ioctl(TT.sockfd, SIOCGIFHWADDR, &ifre);
+
+ for (i=0; i < (sizeof(types)/sizeof(*types))-1; i++)
+ if (ifre.ifr_hwaddr.sa_family == types[i].type) break;
+
+ xprintf("%-9s Link encap:%s ", name, types[i].title);
+ if(i >= 0 && ifre.ifr_hwaddr.sa_family == ARPHRD_ETHER) {
+ xprintf("HWaddr ");
+ for (i=0; i<6; i++) xprintf(":%02X"+!i, ifre.ifr_hwaddr.sa_data[i]);
+ }
+ xputc('\n');
+
+ // If an address is assigned record that.
+
+ ifre.ifr_addr.sa_family = AF_INET;
+ memset(&ifre.ifr_addr, 0, sizeof(ifre.ifr_addr));
+ ioctl(TT.sockfd, SIOCGIFADDR, &ifre);
+ pp = (char *)&ifre.ifr_addr;
+ for (i = 0; i<sizeof(ifre.ifr_addr); i++) if (pp[i]) break;
+
+ if (i != sizeof(ifre.ifr_addr)) {
+ struct sockaddr_in *si = (struct sockaddr_in *)&ifre.ifr_addr;
+ struct {
+ char *name;
+ int flag, ioctl;
+ } addr[] = {
+ {"addr", 0, 0},
+ {"P-t-P", IFF_POINTOPOINT, SIOCGIFDSTADDR},
+ {"Bcast", IFF_BROADCAST, SIOCGIFBRDADDR},
+ {"Mask", 0, SIOCGIFNETMASK}
+ };
+
+ xprintf("%10c%s", ' ', (si->sin_family == AF_INET) ? "inet" :
+ (si->sin_family == AF_INET6) ? "inet6" : "unspec");
+
+ for (i=0; i < sizeof(addr)/sizeof(*addr); i++) {
+ if (!addr[i].flag || (flags & addr[i].flag)) {
+ if (addr[i].ioctl && ioctl(TT.sockfd, addr[i].ioctl, &ifre))
+ si->sin_family = 0;
+ xprintf(" %s:%s ", addr[i].name,
+ (si->sin_family == 0xFFFF || !si->sin_family)
+ ? "[NOT SET]" : inet_ntoa(si->sin_addr));
+ }
+ }
+
+ xputc('\n');
+ }
+
+ fp = fopen(pp = "/proc/net/if_inet6", "r");
+ if (fp) {
+ char iface_name[IFNAMSIZ];
+ int plen, iscope;
+
+ while (fgets(toybuf, sizeof(toybuf), fp)) {
+ int nitems;
+ char ipv6_addr[40];
+
+ nitems = sscanf(toybuf, "%32s %*08x %02x %02x %*02x %15s\n",
+ ipv6_addr, &plen, &iscope, iface_name);
+ if (nitems<0 && feof(fp)) break;
+ if (nitems != 4) perror_exit("bad %s", pp);
+
+ if (!strcmp(name, iface_name)) {
+ struct sockaddr_in6 s6;
+ char *ptr = ipv6_addr+sizeof(ipv6_addr)-1;
+
+ // convert giant hex string into colon-spearated ipv6 address by
+ // inserting ':' every 4 characters.
+ for (i = 32; i; i--)
+ if ((*(ptr--) = ipv6_addr[i])) if (!(i&3)) *(ptr--) = ':';
+
+ // Convert to binary and back to get abbreviated :: version
+ if (inet_pton(AF_INET6, ipv6_addr, (void *)&s6.sin6_addr) > 0) {
+ if (inet_ntop(AF_INET6, &s6.sin6_addr, toybuf, sizeof(toybuf))) {
+ char *scopes[] = {"Global","Host","Link","Site","Compat"},
+ *scope = "Unknown";
+
+ for (i=0; i < sizeof(scopes)/sizeof(*scopes); i++)
+ if (iscope == (!!i)<<(i+3)) scope = scopes[i];
+ xprintf("%10cinet6 addr: %s/%d Scope: %s\n",
+ ' ', toybuf, plen, scope);
+ }
+ }
+ }
+ }
+ fclose(fp);
+ }
+
+ xprintf("%10c", ' ');
+
+ if (flags) {
+ unsigned short mask = 1;
+ char **s, *str[] = {
+ "UP", "BROADCAST", "DEBUG", "LOOPBACK", "POINTOPOINT", "NOTRAILERS",
+ "RUNNING", "NOARP", "PROMISC", "ALLMULTI", "MASTER", "SLAVE", "MULTICAST",
+ "PORTSEL", "AUTOMEDIA", "DYNAMIC", NULL
+ };
+
+ for (s = str; *s; s++) {
+ if (flags & mask) xprintf("%s ", *s);
+ mask = mask << 1;
+ }
+ } else xprintf("[NO FLAGS] ");
+
+ if (ioctl(TT.sockfd, SIOCGIFMTU, &ifre) < 0) ifre.ifr_mtu = 0;
+ xprintf(" MTU:%d", ifre.ifr_mtu);
+ if (ioctl(TT.sockfd, SIOCGIFMETRIC, &ifre) < 0) ifre.ifr_metric = 0;
+ if (!ifre.ifr_metric) ifre.ifr_metric = 1;
+ xprintf(" Metric:%d", ifre.ifr_metric);
+
+ // non-virtual interface
+
+ if (val) {
+ char *label[] = {"RX bytes", "RX packets", "errors", "dropped", "overruns",
+ "frame", 0, 0, "TX bytes", "TX packets", "errors", "dropped", "overruns",
+ "collisions", "carrier", 0, "txqueuelen"};
+ signed char order[] = {-1, 1, 2, 3, 4, 5, -1, 9, 10, 11, 12, 14, -1,
+ 13, 16, -1, 0, 8};
+ int i;
+
+ // Query txqueuelen
+ if (ioctl(TT.sockfd, SIOCGIFTXQLEN, &ifre) >= 0) val[16] = ifre.ifr_qlen;
+ else val[16] = -1;
+
+ for (i = 0; i < sizeof(order); i++) {
+ int j = order[i];
+
+ if (j < 0) xprintf("\n%10c", ' ');
+ else xprintf("%s:%llu ", label[j], val[j]);
+ }
+ }
+ xputc('\n');
+
+ if(!ioctl(TT.sockfd, SIOCGIFMAP, &ifre) && (ifre.ifr_map.irq ||
+ ifre.ifr_map.mem_start || ifre.ifr_map.dma || ifre.ifr_map.base_addr))
+ {
+ xprintf("%10c", ' ');
+ if(ifre.ifr_map.irq) xprintf("Interrupt:%d ", ifre.ifr_map.irq);
+ if(ifre.ifr_map.base_addr >= 0x100) // IO_MAP_INDEX
+ xprintf("Base address:0x%lx ", ifre.ifr_map.base_addr);
+ if(ifre.ifr_map.mem_start)
+ xprintf("Memory:%lx-%lx ", ifre.ifr_map.mem_start, ifre.ifr_map.mem_end);
+ if(ifre.ifr_map.dma) xprintf("DMA chan:%x ", ifre.ifr_map.dma);
+ xputc('\n');
+ }
+ xputc('\n');
+}
+
+static void show_iface(char *iface_name)
+{
+ char *name;
+ struct string_list *ifaces = 0, *sl;
+ int i, j;
+ FILE *fp;
+
+ fp = xfopen("/proc/net/dev", "r");
+
+ for (i=0; fgets(toybuf, sizeof(toybuf), fp); i++) {
+ char *buf = toybuf;
+ unsigned long long val[17];
+
+ if (i<2) continue;
+
+ while (isspace(*buf)) buf++;
+ name = strsep(&buf, ":");
+ if(!buf) error_exit("bad name %s", name);
+
+ errno = 0;
+ for (j=0; j<16 && !errno; j++) val[j] = strtoll(buf, &buf, 0);
+ if (errno) perror_exit("bad %s at %s", name, buf);
+
+ if (iface_name) {
+ if (!strcmp(iface_name, name)) {
+ display_ifconfig(iface_name, 1, val);
+
+ return;
+ }
+ } else {
+ sl = xmalloc(sizeof(*sl)+strlen(name)+1);
+ strcpy(sl->str, name);
+ sl->next = ifaces;
+ ifaces = sl;
+
+ display_ifconfig(sl->str, toys.optflags & FLAG_a, val);
+ }
+ }
+ fclose(fp);
+
+ if (iface_name) display_ifconfig(iface_name, 1, 0);
+ else {
+ struct ifconf ifcon;
+ struct ifreq *ifre;
+ int num;
+
+ // Loop until buffer's big enough
+ ifcon.ifc_buf = NULL;
+ for (num = 30;;num += 10) {
+ ifcon.ifc_len = sizeof(struct ifreq)*num;
+ ifcon.ifc_buf = xrealloc(ifcon.ifc_buf, ifcon.ifc_len);
+ xioctl(TT.sockfd, SIOCGIFCONF, &ifcon);
+ if (ifcon.ifc_len != sizeof(struct ifreq)*num) break;
+ }
+
+ ifre = ifcon.ifc_req;
+ for(num = 0; num < ifcon.ifc_len && ifre; num += sizeof(struct ifreq), ifre++)
+ {
+ // Skip duplicates
+ for(sl = ifaces; sl; sl = sl->next)
+ if(!strcmp(sl->str, ifre->ifr_name)) break;
+
+ if(!sl) display_ifconfig(ifre->ifr_name, toys.optflags & FLAG_a, 0);
+ }
+
+ free(ifcon.ifc_buf);
+ }
+
+ llist_traverse(ifaces, free);
+}
+
+// Encode offset and size of field into an int, and make result negative
+#define IFREQ_OFFSZ(x) -(int)((offsetof(struct ifreq, x)<<16) + sizeof(ifre.x))
+
+void ifconfig_main(void)
+{
+ char **argv = toys.optargs;
+ struct ifreq ifre;
+ int i;
+
+ TT.sockfd = xsocket(AF_INET, SOCK_DGRAM, 0);
+ if(toys.optc < 2) {
+ show_iface(*argv);
+ return;
+ }
+
+ // Open interface
+ memset(&ifre, 0, sizeof(struct ifreq));
+ xstrncpy(ifre.ifr_name, *argv, IFNAMSIZ);
+
+ // Perform operations on interface
+ while(*++argv) {
+ // Table of known operations
+ struct argh {
+ char *name;
+ int on, off; // set, clear
+ } try[] = {
+ {0, IFF_UP|IFF_RUNNING, SIOCSIFADDR},
+ {"up", IFF_UP|IFF_RUNNING, 0},
+ {"down", 0, IFF_UP},
+ {"arp", 0, IFF_NOARP},
+ {"trailers", 0, IFF_NOTRAILERS},
+ {"promisc", IFF_PROMISC, 0},
+ {"allmulti", IFF_ALLMULTI, 0},
+ {"multicast", IFF_MULTICAST, 0},
+ {"dynamic", IFF_DYNAMIC, 0},
+ {"pointopoint", IFF_POINTOPOINT, SIOCSIFDSTADDR},
+ {"broadcast", IFF_BROADCAST, SIOCSIFBRDADDR},
+ {"netmask", 0, SIOCSIFNETMASK},
+ {"dstaddr", 0, SIOCSIFDSTADDR},
+ {"mtu", IFREQ_OFFSZ(ifr_mtu), SIOCSIFMTU},
+ {"keepalive", IFREQ_OFFSZ(ifr_data), SIOCDEVPRIVATE}, // SIOCSKEEPALIVE
+ {"outfill", IFREQ_OFFSZ(ifr_data), SIOCDEVPRIVATE+2}, // SIOCSOUTFILL
+ {"metric", IFREQ_OFFSZ(ifr_metric), SIOCSIFMETRIC},
+ {"txqueuelen", IFREQ_OFFSZ(ifr_qlen), SIOCSIFTXQLEN},
+ {"mem_start", IFREQ_OFFSZ(ifr_map.mem_start), SIOCSIFMAP},
+ {"io_addr", IFREQ_OFFSZ(ifr_map.base_addr), SIOCSIFMAP},
+ {"irq", IFREQ_OFFSZ(ifr_map.irq), SIOCSIFMAP},
+ {"inet", 0, 0},
+ {"inet6", 0, 0}
+ };
+ char *s = *argv;
+ int rev = (*s == '-');
+
+ s += rev;
+
+ // "set hardware address" is oddball enough to special case
+ if (!strcmp(*argv, "hw")) {
+ char *hw_addr, *ptr, *p;
+ struct sockaddr *sock = &ifre.ifr_hwaddr;
+ int count = 6;
+
+ ptr = p = (char *)sock->sa_data;
+ memset(sock, 0, sizeof(struct sockaddr));
+ if (!argv[1]) {
+ if (!strcmp("ether", *++argv)) sock->sa_family = ARPHRD_ETHER;
+ else if (!strcmp("infiniband", *argv)) {
+ sock->sa_family = ARPHRD_INFINIBAND;
+ count = 20;
+ p = ptr = toybuf;
+ }
+ }
+ if (!sock->sa_family || !argv[1]) {
+ toys.exithelp++;
+ error_exit("bad hw '%s'", *argv);
+ }
+ hw_addr = *++argv;
+
+ // Parse and verify address.
+ while (*hw_addr && (p-ptr) < count) {
+ int val, len = 0;
+
+ if (*hw_addr == ':') hw_addr++;
+ sscanf(hw_addr, "%2x%n", &val, &len);
+ if (len != 2) break;
+ hw_addr += len;
+ *p++ = val;
+ }
+
+ if ((p-ptr) != count || *hw_addr)
+ error_exit("bad hw-addr '%s'", hw_addr ? hw_addr : "");
+
+ // the linux kernel's "struct sockaddr" (include/linux/socket.h in the
+ // kernel source) only has 14 bytes of sa_data, and an infiniband address
+ // is 20. So if we go through the ioctl, the kernel will truncate
+ // infiniband addresses, meaning we have to go through sysfs instead.
+ if (sock->sa_family == ARPHRD_INFINIBAND && !strchr(ifre.ifr_name, '/')) {
+ int fd;
+
+ sprintf(toybuf, "/sys/class/net/%s/address", ifre.ifr_name);
+ fd = xopen(toybuf, O_RDWR);
+ xwrite(fd, *argv, strlen(*argv));
+ close(fd);
+ } else xioctl(TT.sockfd, SIOCSIFHWADDR, &ifre);
+ continue;
+
+ // Add/remove ipv6 address to interface
+
+ } else if (!strcmp(*argv, "add") || !strcmp(*argv, "del")) {
+ struct ifreq_inet6 {
+ struct in6_addr addr;
+ unsigned prefix;
+ int index;
+ } ifre6;
+ int plen = 128, fd6 = xsocket(AF_INET6, SOCK_DGRAM, 0);
+ char *prefix;
+
+ if (!argv[1]) {
+ toys.exithelp++;
+ error_exit(*argv);
+ }
+
+ prefix = strchr(argv[1], '/');
+ if (prefix) {
+ plen = atolx_range(prefix+1, 0, 128);
+ *prefix = 0;
+ }
+
+ get_addrinfo(argv[1], AF_INET6, &ifre6.addr);
+ xioctl(fd6, SIOCGIFINDEX, &ifre);
+ ifre6.index = ifre.ifr_ifindex;
+ ifre6.prefix = plen;
+ xioctl(fd6, **(argv++)=='a' ? SIOCSIFADDR : SIOCDIFADDR, &ifre6);
+
+ close(fd6);
+ continue;
+ // Iterate through table to find/perform operation
+ } else for (i = 0; i < sizeof(try)/sizeof(*try); i++) {
+ struct argh *t = try+i;
+ int on = t->on, off = t->off;
+
+ if (!t->name) {
+ if (isdigit(**argv) || !strcmp(*argv, "default")) argv--;
+ else continue;
+ } else if (strcmp(t->name, s)) continue;
+
+ // Is this an SIOCSI entry?
+ if ((off|0xff) == 0x89ff) {
+ if (!rev) {
+ if (!*++argv) show_help();
+
+ // Assign value to ifre field and call ioctl? (via IFREQ_OFFSZ.)
+ if (on < 0) {
+ long l = strtoul(*argv, 0, 0);
+
+ if (off == SIOCSIFMAP) xioctl(TT.sockfd, SIOCGIFMAP, &ifre);
+ on = -on;
+ poke((on>>16) + (char *)&ifre, l, on&15);
+ xioctl(TT.sockfd, off, &ifre);
+ break;
+ } else if (t->name || !strchr(ifre.ifr_name, ':')) {
+ struct sockaddr_in *si = (struct sockaddr_in *)&ifre.ifr_addr;
+
+ si->sin_family = AF_INET;
+
+ if (!strcmp(*argv, "default")) si->sin_addr.s_addr = INADDR_ANY;
+ else get_addrinfo(*argv, AF_INET, &si->sin_addr);
+ xioctl(TT.sockfd, off, &ifre);
+ }
+ }
+ off = 0;
+ }
+
+ // Set flags
+ if (on || off) {
+ xioctl(TT.sockfd, SIOCGIFFLAGS, &ifre);
+ ifre.ifr_flags &= ~(rev ? on : off);
+ ifre.ifr_flags |= (rev ? off : on);
+ xioctl(TT.sockfd, SIOCSIFFLAGS, &ifre);
+ }
+
+ break;
+ }
+ if (i == sizeof(try)/sizeof(*try)) {
+ toys.exithelp++;
+ error_exit("bad argument '%s'", *argv);
+ }
+ }
+ close(TT.sockfd);
+}