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-rw-r--r--toys/pending/ip.c1805
1 files changed, 1805 insertions, 0 deletions
diff --git a/toys/pending/ip.c b/toys/pending/ip.c
new file mode 100644
index 00000000..de3cb3ea
--- /dev/null
+++ b/toys/pending/ip.c
@@ -0,0 +1,1805 @@
+/* ip.c - Show / manipulate routing, devices, policy routing and tunnels.
+ *
+ * Copyright 2014 Sameer Prakash Pradhan <sameer.p.pradhan@gmail.com>
+ * Copyright 2014 Ranjan Kumar <ranjankumar.bth@gmail.com>
+ * Copyright 2014 Rajni Kant <rajnikant12345@gmail.com>
+ *
+ * No Standard.
+ *
+USE_IP(NEWTOY(ip, NULL, TOYFLAG_SBIN))
+USE_IP(OLDTOY(ipaddr, ip, NULL, TOYFLAG_SBIN))
+USE_IP(OLDTOY(iplink, ip, NULL, TOYFLAG_SBIN))
+USE_IP(OLDTOY(iproute, ip, NULL, TOYFLAG_SBIN))
+USE_IP(OLDTOY(iprule, ip, NULL, TOYFLAG_SBIN))
+USE_IP(OLDTOY(iptunnel, ip, NULL, TOYFLAG_SBIN))
+
+config IP
+ bool "ip"
+ default n
+ help
+ usage: ip [ OPTIONS ] OBJECT { COMMAND }
+
+ Show / manipulate routing, devices, policy routing and tunnels.
+
+ where OBJECT := {address | link | route | rule | tunnel}
+ OPTIONS := { -f[amily] { inet | inet6 | link } | -o[neline] }
+*/
+#define FOR_ip
+#include "toys.h"
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_ether.h>
+#include <linux/if_addr.h>
+#include <net/if_arp.h>
+#include <ifaddrs.h>
+#include <fnmatch.h>
+//=============================================================================
+
+// TODO List
+/*
+ * 1. At this point of time, not clear about using hashing technique
+ * is useful to improve performance.
+ * 2. Pending decision:
+ * a. rt_realms, rt_dsfield and rt_tables will get free or not.
+ * b. rt_realms, rt_dsfield and rt_tables will be global or local.
+ * 3. Use atolx_range instead of strtoul.
+ * 4. substring_to_idx for multiple match cases.
+ */
+
+GLOBALS(
+ char stats;
+ int sockfd;
+ char gbuf[8192];
+ int8_t addressfamily;
+ int8_t is_addr;
+ char singleline;
+ char flush;
+ char *filter_dev;
+)
+
+struct arglist {
+ char *name;
+ int idx;
+};
+
+static struct
+{
+ int ifindex, scope, scopemask, up, to;
+ char *label, *addr;
+} addrinfo;
+
+struct linkdata {
+ struct linkdata *next, *prev;
+ int flags, iface_idx, mtu, txqueuelen, parent,iface_type;
+ char qdiscpline[IFNAMSIZ+1], state[IFNAMSIZ+1], type[IFNAMSIZ+1],
+ iface[IFNAMSIZ+1], laddr[64], bcast[64];
+ struct rtnl_link_stats rt_stat;
+}*linfo;
+
+typedef int (*cmdobj)(char **argv);
+
+#define MESG_LEN 8192
+
+// For "/etc/iproute2/RPDB_tables"
+enum {
+ RPDB_rtdsfield = 1,
+ RPDB_rtrealms = 3,
+ RPDB_rtscopes = 4,
+ RPDB_rttables = 5
+};
+
+#define RPDB_ENTRIES 256
+static int8_t rttable_init;
+static int8_t rtdsfield_init;
+static int8_t rtscope_init;
+static int8_t rtrealms_init;
+
+static struct arglist default_table = {"default", RT_TABLE_DEFAULT};
+static struct arglist main_table = {"main", RT_TABLE_MAIN};
+static struct arglist local_table = {"local", RT_TABLE_LOCAL};
+static struct arglist unspec_realms = {"unspec", RT_TABLE_UNSPEC};
+
+static struct arglist *rt_dsfield[RPDB_ENTRIES] = {0};
+static struct arglist *rt_tables[RPDB_ENTRIES] = {
+ [RT_TABLE_DEFAULT] = &default_table,
+ [RT_TABLE_MAIN] = &main_table,
+ [RT_TABLE_LOCAL] = &local_table,
+};
+static struct arglist *rt_realms[RPDB_ENTRIES] = {
+ [0] = &unspec_realms,
+};
+
+// default values from /etc/iproute2/rt_scope
+static struct arglist global_table = {"global", 0};
+static struct arglist site_table = {"site", 200};
+static struct arglist link_table = {"link", 253};
+static struct arglist host_table = {"host", 254};
+static struct arglist nowhere_table = {"nowhere", 255};
+static struct arglist *rt_scope[256] = {
+ [RT_SCOPE_UNIVERSE] = &global_table,
+ [RT_SCOPE_SITE] = &site_table,
+ [RT_SCOPE_LINK] = &link_table,
+ [RT_SCOPE_HOST] = &host_table,
+ [RT_SCOPE_NOWHERE] = &nowhere_table,
+};
+
+static struct arglist rtmtypes[] = { {"none", RTN_UNSPEC},
+ {"unicast", RTN_UNICAST}, {"local", RTN_LOCAL},
+ {"broadcast", RTN_BROADCAST}, {"anycast", RTN_ANYCAST},
+ {"multicast", RTN_MULTICAST}, {"blackhole", RTN_BLACKHOLE},
+ {"unreachable", RTN_UNREACHABLE}, {"prohibit", RTN_PROHIBIT},
+ {"throw", RTN_THROW}, {"nat", RTN_NAT},
+ {"xresolve", RTN_XRESOLVE}, {NULL, -1}
+};
+
+static int filter_nlmesg(int (*fun)(struct nlmsghdr *mhdr, char **), char **);
+static int ipaddr_print(struct linkdata *, int flg);
+
+
+// ===========================================================================
+// Common Code for IP Options (like: addr, link, route etc.)
+// ===========================================================================
+static int substring_to_idx(char *str, struct arglist *list)
+{
+ struct arglist *alist;
+ int idx = -1, mcount = 0, len;
+
+ if (!str) return -1;
+ len = strlen(str);
+
+ for (alist = list; alist->name; alist++) {
+ if (!memcmp(str, alist->name, len)) {
+ if (!*(alist->name + len))
+ return alist->idx;
+ idx = alist->idx;
+ ++mcount; // No of matches.
+ }
+ }
+ if (mcount > 1) return -1; // Multiple match found.
+ return idx;
+}
+
+static int string_to_idx(char *str, struct arglist *list)
+{
+ struct arglist *alist;
+
+ if (!str) return -1;
+ for (alist = list; alist->name; alist++)
+ if (!strcmp(str, alist->name)) return alist->idx;
+ return -1;
+}
+
+static char *idx_to_string(int idx, struct arglist *list)
+{
+ struct arglist *alist;
+
+ if (idx < 0) return NULL;
+ for (alist = list; alist->name; alist++)
+ if (idx == alist->idx) return alist->name;
+ return NULL;
+}
+
+static void iphelp(void)
+{
+ toys.exithelp = 1;
+ error_exit(NULL);
+}
+
+static void send_nlmesg(int type, int flags, int family,
+ void *buf, int blen)
+{
+ struct {
+ struct nlmsghdr nlh;
+ struct rtgenmsg g;
+ } req;
+
+ if (!buf) {
+ memset(&req, 0, sizeof(req));
+ req.nlh.nlmsg_len = sizeof(req);
+ req.nlh.nlmsg_type = type;
+ req.nlh.nlmsg_flags = flags;
+ req.g.rtgen_family = family;
+ buf = &req;
+ blen = sizeof(req);
+ }
+ if (send(TT.sockfd , (void*)buf, blen, 0) < 0)
+ perror_exit("Unable to send data on socket.");
+}
+
+// Parse /etc/iproute2/RPDB_tables and prepare list.
+static void parseRPDB(char *fname, struct arglist **list, int32_t size)
+{
+ char *line;
+ int fd = open(fname, O_RDONLY);
+
+ if (fd < 0) return;
+ for (; (line = get_line(fd)); free(line)) {
+ char *ptr = line;
+ int32_t idx;
+
+ while (*ptr == ' ' || *ptr == '\t') ptr++;
+ if (*ptr == 0 || *ptr == '#' || *ptr == '\n') continue;
+ if ((sscanf(ptr, "0x%x %s\n", &idx, toybuf) != 2) &&
+ (sscanf(ptr, "0x%x %s #", &idx, toybuf) != 2) &&
+ (sscanf(ptr, "%d %s\n", &idx, toybuf) != 2) &&
+ (sscanf(ptr, "%d %s #", &idx, toybuf) != 2)) {
+ error_msg("Corrupted '%s' file", fname);
+ xclose(fd);
+ free(line);
+ return;
+ }
+ if (idx >= 0 && idx < size) {
+ int index = idx & (size-1);
+ list[index] = xzalloc(sizeof(struct arglist));
+ list[index]->idx = idx;
+ list[index]->name = xstrdup(toybuf);
+ }
+ }
+ xclose(fd);
+}
+
+static struct arglist **getlist(u_int8_t whichDB)
+{
+ struct arglist **alist;
+
+ switch (whichDB) {
+ case RPDB_rtdsfield:
+ alist = rt_dsfield;
+ if (!rtdsfield_init) {
+ rtdsfield_init = 1;
+ parseRPDB("/etc/iproute2/rt_dsfield", alist, ARRAY_LEN(rt_dsfield));
+ }
+ break;
+ case RPDB_rtrealms:
+ alist = rt_realms;
+ if (!rtrealms_init) {
+ rtrealms_init = 1;
+ parseRPDB("/etc/iproute2/rt_realms", alist, ARRAY_LEN(rt_realms));
+ }
+ break;
+ case RPDB_rtscopes:
+ alist = rt_scope;
+ if (!rtscope_init) {
+ rtscope_init = 1;
+ parseRPDB("/etc/iproute2/rt_scopes", alist, ARRAY_LEN(rt_scope));
+ }
+ break;
+ case RPDB_rttables:
+ alist = rt_tables;
+ if (!rttable_init) {
+ rttable_init = 1;
+ parseRPDB("/etc/iproute2/rt_tables", alist, ARRAY_LEN(rt_tables));
+ }
+ break;
+ default:
+ error_exit("wrong database");
+ break; // Unreachable code.
+ }
+ return alist;
+}
+
+/*
+ * Parse RPBD tables (if not parsed already).
+ * return RPDB table name as per idx.
+ */
+static char *namefromRPDB(int idx, u_int8_t whichDB)
+{
+ struct arglist **alist;
+
+ if (idx < RT_TABLE_UNSPEC || idx >= RPDB_ENTRIES) {
+ snprintf(toybuf, RPDB_ENTRIES, "%u", idx);
+ return toybuf;
+ }
+
+ alist = getlist(whichDB);
+
+ if (alist[idx] && alist[idx]->name) return alist[idx]->name;
+ if (whichDB == RPDB_rtdsfield) snprintf(toybuf, RPDB_ENTRIES, "0x%02x", idx);
+ else snprintf(toybuf, RPDB_ENTRIES, "%u", idx);
+
+ return toybuf;
+}
+
+static int idxfromRPDB(char *name, u_int8_t whichDB)
+{
+ struct arglist **alist;
+ int i = 0;
+
+ for (alist = getlist(whichDB); i < RPDB_ENTRIES; i++) {
+ if (!alist[i] || !alist[i]->name) continue;
+ if (!strcmp(alist[i]->name, name)) return i;
+ }
+ return (atolx_range(name, 0, 255));
+}
+
+/*
+ * TODO:
+ * rtmtype_idx2str and rtmtype_str2idx interfaces may be used in IPROUTE too.
+ */
+static char *rtmtype_idx2str(u_int8_t idx)
+{
+ char *name = idx_to_string(idx, rtmtypes);
+
+ if (!name) snprintf(toybuf, RPDB_ENTRIES, "%u", idx);
+ else strcpy(toybuf, name);
+
+ return toybuf;
+}
+
+static int rtmtype_str2idx(char *name)
+{
+ int idx = string_to_idx(name, rtmtypes);
+
+ if (idx < 0) return atolx_range(name, 0, 255);
+ return idx;
+}
+
+/*
+ * Used to get the prefix value in binary form.
+ * For IPv4: non-standard parsing used; as 10.10 will be treated as 10.10.0.0
+ * unlike inet_aton which is 10.0.0.10
+ */
+static int get_prefix(uint32_t *addr, uint8_t *af, char *name, int family)
+{
+ if (family == AF_PACKET) error_exit("'%s' may be inet prefix", name);
+ if (!memcmp(name, "default", strlen(name))
+ || !memcmp(name, "all", strlen(name))
+ || !memcmp(name, "any", strlen(name))) {
+ *af = family;
+ return 0;
+ }
+ if (strchr(name, ':')) {
+ *af = AF_INET6;
+ if (family != AF_UNSPEC && family != AF_INET6) return 1;
+ if (inet_pton(AF_INET6, name, (void *)addr) != 1)
+ return 1;
+ } else { // for IPv4.
+ char *ptr = name;
+ uint8_t count = 0;
+
+ *af = AF_INET;
+ if (family != AF_UNSPEC && family != AF_INET) return 1;
+ while (*ptr) {
+ int val, len = 0;
+
+ if (*ptr == '.') ptr++;
+ sscanf(ptr, "%d%n", &val, &len);
+ if (!len || len > 3 || val < 0 || val > 255 || count > 3) return 1;
+ ptr += len;
+ ((uint8_t*)addr)[count++] = val;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Used to calculate netmask, which can be in the form of
+ * either 255.255.255.0 or 24 or default or any or all strings.
+ */
+static int get_nmask_prefix(uint32_t *netmask, uint8_t af,
+ char *name, uint8_t family)
+{
+ char *ptr;
+ uint32_t naddr[4] = {0,};
+ uint64_t plen;
+ uint8_t naf = AF_UNSPEC;
+
+ *netmask = (af == AF_INET6) ? 128 : 32; // set default netmask
+ plen = strtoul(name, &ptr, 0);
+
+ if (!ptr || ptr == name || *ptr || !plen || plen > *netmask) {
+ if (get_prefix(naddr, &naf, name, family)) return -1;
+ if (naf == AF_INET) {
+ uint32_t mask = htonl(*naddr), host = ~mask;
+ if (host & (host + 1)) return -1;
+ for (plen = 0; mask; mask <<= 1) ++plen;
+ if (plen > 32) return -1;
+ }
+ }
+ *netmask = plen;
+ return 0;
+}
+
+/*
+ * Parse prefix, which will be in form of
+ * either default or default/default or default/24 or default/255.255.255.0
+ * or 10.20.30.40 or 10.20.30.40/default or 10.20.30.40/24
+ * or 10.20.30.40/255.255.255.0
+ */
+static void parse_prefix(uint32_t *addr, uint32_t *netmask, uint8_t *len,
+ char *name, int family)
+{
+ uint8_t af = AF_UNSPEC;
+ char *slash = strchr(name, '/');
+
+ if (slash) *slash = 0;
+ if (get_prefix(addr, &af, name, family)) error_exit("Invalid prefix");
+
+ if (slash) { // grab netmask.
+ if (get_nmask_prefix(netmask, af, slash+1, family))
+ error_exit("Invalid prefix");
+ *slash ='/';
+ }
+ else if (af == AF_INET && *addr) *netmask = 32;
+ else if (af == AF_INET6 && (*addr || *(addr+3))) *netmask = 128;
+
+ if (!*addr && !slash && !af) *len = 0;
+ else *len = (af == AF_INET6) ? 16 : 4;
+}
+
+static void add_string_to_rtattr(struct nlmsghdr *n, int maxlen,
+ int type, void *data, int alen)
+{
+ int len = RTA_LENGTH(alen);
+ struct rtattr *rta;
+
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) return;
+ rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
+ rta->rta_type = type;
+ rta->rta_len = len;
+ memcpy(RTA_DATA(rta), data, alen);
+ n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
+}
+
+
+
+// ===========================================================================
+// Code for ip link.
+// ===========================================================================
+#ifndef NLMSG_TAIL
+#define NLMSG_TAIL(nmsg) \
+ ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
+#endif
+
+static uint32_t get_ifaceindex(char *name, int ext)
+{
+ struct if_nameindex *if_ni, *i;
+ int index = -1;
+ if_ni = if_nameindex();
+ if (if_ni == NULL) {
+ perror("if_nameindex");
+ exit(EXIT_FAILURE);
+ }
+
+ for (i = if_ni; ! (i->if_index == 0 && i->if_name == NULL); i++)
+ if(!strcmp(name,i->if_name)) { index =i->if_index; break; }
+ if_freenameindex(if_ni);
+ if (index == -1 && ext) perror_exit("can't find device '%s'", name);
+ return index;
+}
+
+static void fill_hwaddr(char *arg, int len, unsigned char *address)
+{
+ int count = 0, val, length;
+
+ while (count < len) {
+ val = length = 0;
+ if (*arg == ':') arg++, count++;
+ sscanf(arg, "%2x%n", &val, &length);
+ if (!length || length > 2)
+ error_exit("bad hw-addr '%s'", arg ? arg : "");
+ arg += length;
+ count += length;
+ *address++ = val;
+ }
+}
+
+// Multimach = 1, single match = 0
+static char *get_flag_string(struct arglist *aflags, int flags, int ismulti)
+{
+ struct arglist *p = aflags;
+ char *out = NULL, *tmp = NULL;
+
+ for (; p->name; p++) {
+ int test = (ismulti ? p->idx & flags : 0) || p->idx == flags;
+ if (test) { // flags can be zero
+ tmp = out ? xmprintf("%s,%s", out, p->name) : xmprintf("%s", p->name);
+ if (out) free(out);
+ out = tmp;
+ }
+ }
+ return out;
+}
+
+static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
+{
+ struct arglist vlan_optlist[] = {{"id", 0}, {"protocol", 1},
+ {"reorder_hdr", 2}, {"gvrp", 3}, {NULL,-1}};
+ struct arglist vlan_protolist[] = {{"802.1q", 0}, {"802.1ad", 1}, {NULL,-1}};
+ struct arglist on_off[] = { {"on", 0}, {"off", 1}, {NULL,-1}};
+ int idx;
+ struct ifla_vlan_flags flags;
+
+ memset(&flags, 0, sizeof(flags));
+ for (; *argv; argv++) {
+ int param, proto;
+
+ if ((idx = substring_to_idx(*argv++, vlan_optlist)) == -1) iphelp();
+ switch (idx) {
+ case 0: // ARG_id
+ if (!*argv) iphelp();
+ param = atolx(*argv);
+ add_string_to_rtattr(n, size, IFLA_VLAN_ID, &param, sizeof(param));
+ break;
+ case 1: // ARG_protocol
+ if (!*argv) error_exit("Invalid vlan id.");
+ if ((idx = substring_to_idx(*argv, vlan_protolist)) == -1) iphelp();
+ if (!idx) proto = ETH_P_8021Q; // PROTO_8021Q - 0
+ else if (idx == 1) proto = 0x88A8; // ETH Protocol - 8021AD
+ // IFLA VLAN PROTOCOL - 5
+ add_string_to_rtattr(n, size, 5, &proto, sizeof(proto));
+ break;
+ case 2: // ARG_reorder_hdr
+ case 3: // ARG_gvrp
+ if ((param = substring_to_idx(*argv, on_off)) == -1) iphelp();
+
+ flags.mask |= (idx -1); // VLAN FLAG REORDER Header
+ flags.flags &= ~(idx -1); // VLAN FLAG REORDER Header
+ if (!param) flags.flags |= (idx -1); // VLAN FLAG REORDER Header
+ break;
+ }
+ }
+ if (flags.mask)
+ add_string_to_rtattr(n, size, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
+}
+
+static int linkupdate(char **argv)
+{
+ struct {
+ struct nlmsghdr mhdr;
+ struct ifinfomsg info;
+ char buf[1024];
+ } request;
+ char *name, *dev, *type, *link, *addr;
+ struct rtattr *attr = NULL;
+ int len = 0, add = (*argv[-1] == 'a') ? 1 : 0;
+
+ name = dev = type = link = addr = NULL;
+ for (; *argv; argv++) {
+ struct arglist objectlist[] = { {"type", 0}, {"name", 1}, {"link", 2},
+ {"address", 3}, {NULL,-1}};
+ uint8_t idx = substring_to_idx(*argv, objectlist);
+
+ if (!idx) {
+ type = *++argv;
+ break;
+ }
+ else if (idx == 1) dev = name = *++argv;
+ else if (idx == 2) link = *++argv;
+ else if (idx == 3) addr = *++argv;
+ else if (!dev) name = dev = *argv;
+ }
+
+ if (!name && !add)
+ error_exit("Not enough information: \"dev\" argument is required.\n");
+ else if (!type && add)
+ error_exit("Not enough information: \"type\" argument is required.\n");
+
+ memset(&request, 0, sizeof(request));
+ request.mhdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+ request.mhdr.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
+ if (add) {
+ request.mhdr.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
+ request.mhdr.nlmsg_type = RTM_NEWLINK;
+ } else {
+ request.mhdr.nlmsg_type = RTM_DELLINK;
+ request.info.ifi_index = get_ifaceindex(name, 1);
+ }
+ request.info.ifi_family = AF_UNSPEC;
+ attr = NLMSG_TAIL(&request.mhdr);
+ if (type) {
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ IFLA_LINKINFO, NULL, 0);
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ IFLA_INFO_KIND, type, strlen(type));
+ if (!strcmp(type, "vlan")) {
+ struct rtattr *data = NLMSG_TAIL(&request.mhdr);
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ IFLA_INFO_DATA, NULL, 0);
+ vlan_parse_opt(++argv, &request.mhdr, sizeof(request));
+ data->rta_len = (void *)NLMSG_TAIL(&request.mhdr) - (void *)data;
+ }
+ attr->rta_len = (void *)NLMSG_TAIL(&request.mhdr) - (void *)attr;
+ }
+
+ if (link) {
+ uint32_t idx = get_ifaceindex(link, 1);
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ IFLA_LINK, &idx, sizeof(uint32_t));
+ }
+ if (addr) {
+ char abuf[IF_NAMESIZE] = {0,};
+
+ fill_hwaddr(addr, IF_NAMESIZE, (unsigned char *)abuf);
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ IFLA_ADDRESS, abuf, strlen(abuf));
+ }
+ if (!name) {
+ snprintf(toybuf, IFNAMSIZ, "%s%d", type, 0);
+ for (len = 1; ; len++) {
+ if (!get_ifaceindex(toybuf, 0)) break;
+ snprintf(toybuf, IFNAMSIZ, "%s%d", type, len);
+ }
+ name = toybuf;
+ }
+ len = strlen(name) + 1;
+ if (len < 2 || len > IFNAMSIZ) error_exit("Invalid device name.");
+ add_string_to_rtattr(&request.mhdr, sizeof(request), IFLA_IFNAME, name, len);
+
+ send_nlmesg(0, 0, 0, (void *)&request, request.mhdr.nlmsg_len);
+ return (filter_nlmesg(NULL,NULL));
+}
+
+static int link_set(char **argv)
+{
+ struct arglist cmd_objectlist[] = {{"up", 0}, {"down", 1}, {"arp", 2},
+ {"multicast", 3}, {"dynamic", 4}, {"name", 5}, {"txqueuelen", 6},
+ {"mtu", 7},{"address", 8}, {"broadcast", 9}, {NULL,-1}};
+ int case_flags[] = {IFF_NOARP,IFF_MULTICAST,IFF_DYNAMIC};
+ struct ifreq req;
+ int idx, flags = 0, masks = 0xffff, fd;
+
+ memset(&req, 0, sizeof(req));
+ if (!*argv) error_exit("\"dev\" missing");
+ strncpy(req.ifr_name, *argv, IF_NAMESIZE);
+ fd = xsocket(AF_INET, SOCK_DGRAM, 0);
+ xioctl(fd, SIOCGIFINDEX, &req);
+ for (++argv; *argv;) {
+ if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+ switch(idx) {
+ case 0:
+ flags |= IFF_UP; break;
+ case 1:
+ masks &= ~IFF_UP; break;
+ case 2:
+ case 3:
+ case 4:
+ if (!*argv) iphelp();
+ else if (!strcmp(*argv, "on")) {
+ if (idx == 2) {
+ masks &= ~case_flags[idx-2];
+ flags &= ~case_flags[idx-2];
+ } else flags |= case_flags[idx-2];
+ } else if (!strcmp(*argv,"off")) {
+ if (idx == 2) {
+ masks |= case_flags[idx-2];
+ flags |= case_flags[idx-2];
+ } else masks &= ~case_flags[idx-2];
+ } else iphelp();
+ ++argv;
+ break;
+ case 5:
+ strncpy(req.ifr_ifru.ifru_newname, *argv, IF_NAMESIZE);
+ xioctl(fd, SIOCSIFNAME, &req);
+ strncpy(req.ifr_name, *argv++, IF_NAMESIZE);
+ xioctl(fd, SIOCGIFINDEX, &req);
+ break;
+ case 6:
+ req.ifr_ifru.ifru_ivalue = atolx(*argv++);
+ xioctl(fd, SIOCSIFTXQLEN, &req);
+ break;
+ case 7:
+ req.ifr_ifru.ifru_mtu = atolx(*argv++);
+ xioctl(fd, SIOCSIFMTU, &req);
+ break;
+ case 8:
+ xioctl(fd, SIOCGIFHWADDR, &req);
+ fill_hwaddr(*argv++, IF_NAMESIZE,
+ (unsigned char *)(req.ifr_hwaddr.sa_data));
+ xioctl(fd, SIOCSIFHWADDR, &req);
+ break;
+ case 9:
+ xioctl(fd, SIOCGIFHWADDR, &req);
+ fill_hwaddr(*argv++, IF_NAMESIZE,
+ (unsigned char *)(req.ifr_hwaddr.sa_data));
+ xioctl(fd, SIOCSIFHWBROADCAST, &req);
+ break;
+ }
+ }
+ xioctl(fd, SIOCGIFFLAGS, &req);
+ req.ifr_ifru.ifru_flags |= flags;
+ req.ifr_ifru.ifru_flags &= masks;
+ xioctl(fd, SIOCSIFFLAGS, &req);
+ xclose(fd);
+ return 0;
+}
+
+static void print_stats(struct rtnl_link_stats *rtstat)
+{
+ char *line_feed = (!TT.singleline ? "\n " : " ");
+
+ if (TT.stats > 0) {
+ xprintf(" RX: bytes packets errors "
+ "dropped overrun mcast%s%-10u %-8u %-7u %-8u %-8u %-8u\n",
+ line_feed, rtstat->rx_bytes, rtstat->rx_packets, rtstat->rx_errors,
+ rtstat->rx_dropped, rtstat->rx_over_errors, rtstat->multicast);
+ if (TT.stats > 1) {
+ xprintf(" RX: errors length crc "
+ "frame fifo missed%s%-10u %-8u %-7u %-8u %-8u %-8u\n",
+ line_feed, rtstat->rx_errors, rtstat->rx_length_errors,
+ rtstat->rx_crc_errors, rtstat->rx_frame_errors,
+ rtstat->rx_fifo_errors, rtstat->rx_missed_errors);
+ }
+ xprintf(" TX: bytes packets errors "
+ "dropped carrier collsns%s%-10u %-8u %-7u %-8u %-8u %-8u\n",
+ line_feed, rtstat->tx_bytes, rtstat->tx_packets, rtstat->tx_errors,
+ rtstat->tx_dropped, rtstat->tx_carrier_errors, rtstat->collisions);
+ if (TT.stats > 1) {
+ xprintf(" TX: errors aborted fifo window "
+ "heartbeat%s%-10u %-8u %-7u %-8u %-8u\n",
+ line_feed, rtstat->tx_errors, rtstat->tx_aborted_errors,
+ rtstat->tx_fifo_errors, rtstat->tx_window_errors,
+ rtstat->tx_heartbeat_errors);
+ }
+ }
+}
+
+static int print_link_output(struct linkdata *link)
+{
+ char *line_feed = " ", *flags,*peer = "brd";
+ struct arglist iface_flags[] = {{"",0},{"UP", IFF_UP},
+ {"BROADCAST", IFF_BROADCAST}, {"DEBUG", IFF_DEBUG},
+ {"LOOPBACK", IFF_LOOPBACK}, {"POINTOPOINT", IFF_POINTOPOINT},
+ {"NOTRAILERS", IFF_NOTRAILERS}, {"RUNNING", IFF_RUNNING},
+ {"NOARP", IFF_NOARP}, {"PROMISC",IFF_PROMISC},
+ {"ALLMULTI", IFF_ALLMULTI}, {"MASTER", IFF_MASTER}, {"SLAVE", IFF_SLAVE},
+ {"MULTICAST", IFF_MULTICAST}, {"PORTSEL", IFF_PORTSEL},
+ {"AUTOMEDIA", IFF_AUTOMEDIA}, {"DYNAMIC", IFF_DYNAMIC}, {NULL,-1}};
+
+ if (link->parent != -1) {
+ int fd = 0;
+ struct ifreq req;
+
+ memset(&req, 0, sizeof(req));
+ if_indextoname( link->parent,req.ifr_ifrn.ifrn_name);
+ fd = xsocket(AF_INET, SOCK_DGRAM, 0);
+ if (ioctl(fd, SIOCGIFTXQLEN, &req)) perror("");
+ else link->txqueuelen = req.ifr_ifru.ifru_ivalue;
+ xclose(fd);
+ }
+
+ if(TT.is_addr && addrinfo.label && fnmatch(addrinfo.label, link->iface, 0))
+ return 0;
+
+
+ if (!(flags = get_flag_string(iface_flags, link->flags, 1)))
+ error_exit("Invalid data.");
+ if (!TT.singleline) line_feed="\n ";
+ if (link->parent != -1) {
+ char iface[IF_NAMESIZE];
+
+ if (!if_indextoname(link->parent, iface)) perror_exit(NULL);
+ sprintf(toybuf,"%s@%s", link->iface, iface);
+ }
+ if(link->flags & IFF_POINTOPOINT) peer = "peer";
+ if (TT.is_addr && TT.singleline && TT.addressfamily)
+ xprintf("%d: %s", link->iface_idx,
+ ((link->parent == -1) ? link->iface : toybuf));
+ else xprintf("%d: %s: <%s> mtu %d qdisc %s state %s qlen %d",
+ link->iface_idx, ((link->parent == -1) ? link->iface : toybuf), flags,
+ link->mtu, link->qdiscpline, link->state, link->txqueuelen);
+
+ if (!TT.addressfamily || TT.addressfamily == AF_PACKET)
+ xprintf("%slink/%s %s %s %s",
+ line_feed, link->type, link->laddr, peer ,link->bcast);
+
+ xputc('\n');
+
+ //user can specify stats flag two times
+ //one for stats and other for erros e.g. -s and -s -s
+ print_stats(&link->rt_stat);
+ free(flags);
+
+ return 0;
+}
+
+static void fill_address(void *p, char *ip)
+{
+ unsigned char *ptr = (unsigned char*)p;
+ snprintf(ip, 64, " %02x:%02x:%02x:%02x:%02x:%02x",
+ ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5]);
+}
+
+static int get_link_info(struct nlmsghdr* h,struct linkdata* link,char **argv)
+{
+ struct ifinfomsg *iface = NLMSG_DATA(h);
+ struct rtattr *attr = IFLA_RTA(iface);
+ int len = h->nlmsg_len - NLMSG_LENGTH(sizeof(*iface));
+ struct arglist hwtypes[]={{"generic",0},{"ether",ARPHRD_ETHER},
+ {"loopback", ARPHRD_LOOPBACK},{"sit",ARPHRD_SIT},
+#ifdef ARPHRD_INFINIBAND
+ {"infiniband",ARPHRD_INFINIBAND},
+#endif
+#ifdef ARPHRD_IEEE802_TR
+ {"ieee802",ARPHRD_IEEE802}, {"tr",ARPHRD_IEEE802_TR},
+#else
+ {"tr",ARPHRD_IEEE802},
+#endif
+#ifdef ARPHRD_IEEE80211
+ {"ieee802.11",ARPHRD_IEEE80211},
+#endif
+#ifdef ARPHRD_IEEE1394
+ {"ieee1394",ARPHRD_IEEE1394},
+#endif
+ {"irda",ARPHRD_IRDA},{"slip",ARPHRD_SLIP},{"cslip",ARPHRD_CSLIP},
+ {"slip6",ARPHRD_SLIP6}, {"cslip6",ARPHRD_CSLIP6}, {"ppp",ARPHRD_PPP},
+ {"ipip",ARPHRD_TUNNEL}, {"tunnel6",ARPHRD_TUNNEL6},
+ {"gre",ARPHRD_IPGRE},
+#ifdef ARPHRD_VOID
+ {"void",ARPHRD_VOID},
+#endif
+ {NULL,-1}};
+ char *lname = get_flag_string(hwtypes, iface->ifi_type, 0);
+
+ link->next = link->prev = 0;
+ link->iface_type = iface->ifi_type;
+ if (!lname) error_exit("Invalid link.");
+ strncpy(link->type, lname, IFNAMSIZ);
+ free(lname);
+ link->iface_idx = iface->ifi_index;
+ link->flags = iface->ifi_flags;
+ if (*argv && !strcasecmp("up",*argv) && !(link->flags & IFF_UP)) return 1;
+ link->parent = -1;
+ for (; RTA_OK(attr, len); attr = RTA_NEXT(attr, len)) {
+ switch(attr->rta_type) {
+ case IFLA_IFNAME:
+ snprintf(link->iface, IFNAMSIZ, "%s",(char *) RTA_DATA(attr));
+ break;
+ case IFLA_ADDRESS:
+ if ( iface->ifi_type== ARPHRD_TUNNEL ||
+ iface->ifi_type == ARPHRD_SIT ||
+ iface->ifi_type == ARPHRD_IPGRE)
+ inet_ntop(AF_INET, RTA_DATA(attr), link->laddr, 64);
+ else fill_address(RTA_DATA(attr), link->laddr);
+ break;
+ case IFLA_BROADCAST:
+ if (iface->ifi_type== ARPHRD_TUNNEL ||
+ iface->ifi_type == ARPHRD_SIT ||
+ iface->ifi_type == ARPHRD_IPGRE)
+ inet_ntop(AF_INET, RTA_DATA(attr), link->bcast, 64);
+ else fill_address(RTA_DATA(attr), link->bcast);
+ break;
+ case IFLA_MTU:
+ link->mtu = *((int*)(RTA_DATA(attr)));
+ break;
+ case IFLA_QDISC:
+ snprintf(link->qdiscpline, IFNAMSIZ, "%s", (char *) RTA_DATA(attr));
+ break;
+ case IFLA_STATS :
+ link->rt_stat = *((struct rtnl_link_stats*) RTA_DATA(attr));
+ break;
+ case IFLA_LINK:
+ link->parent = *((int*)(RTA_DATA(attr)));
+ break;
+ case IFLA_TXQLEN:
+ link->txqueuelen = *((int*)(RTA_DATA(attr)));
+ break;
+ case IFLA_OPERSTATE:
+ {
+ struct arglist flags[]={{"UNKNOWN", 0}, {"NOTPRESENT", 1},
+ {"DOWN", 2}, {"LOWERLAYERDOWN", 3}, {"TESTING", 4},
+ {"DORMANT", 5}, {"UP", 6}, {NULL, -1}};
+ if (!(lname = get_flag_string(flags, *((int*)(RTA_DATA(attr))), 0)))
+ error_exit("Invalid state.");
+ strncpy(link->state, lname,IFNAMSIZ);
+ free(lname);
+ }
+ break;
+ default: break;
+ }
+ }
+ return 0;
+}
+
+static int display_link_info(struct nlmsghdr *mhdr, char **argv)
+{
+ struct linkdata link;
+
+ if(!get_link_info(mhdr, &link, argv)){
+ if(TT.is_addr) {
+ struct linkdata *lnk = xzalloc(sizeof(struct linkdata));
+ memcpy(lnk, &link, sizeof(struct linkdata));
+ dlist_add_nomalloc((struct double_list **)&linfo,
+ (struct double_list *)lnk);
+ }
+ else print_link_output(&link);
+ }
+ return 0;
+}
+
+static int link_show(char **argv)
+{
+ struct {
+ struct nlmsghdr mhdr;
+ struct ifinfomsg info;
+ } request;
+ uint32_t index = 0;
+
+ if (*argv && strcasecmp("up",*argv)) index = get_ifaceindex(*argv, 1);
+ memset(&request, 0, sizeof(request));
+ request.mhdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+ request.mhdr.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
+ if (!index) request.mhdr.nlmsg_flags |= NLM_F_ROOT|NLM_F_MATCH;
+ else request.info.ifi_change = 0xffffffff; // used in single operation
+ request.mhdr.nlmsg_type = RTM_GETLINK;
+ request.info.ifi_index = index;
+ request.info.ifi_family = AF_UNSPEC;
+ send_nlmesg(0, 0, 0, (void*)&request, sizeof(request));
+ return (filter_nlmesg(display_link_info, argv));
+}
+
+static int iplink(char **argv)
+{
+ int idx;
+ cmdobj ipcmd, cmdobjlist[] = {linkupdate, link_set, link_show};
+ struct arglist cmd_objectlist[] = {{"add", 0}, {"delete", 0},
+ {"set", 1}, {"show", 2}, {"list", 2}, {"lst", 2}, {NULL,-1}};
+
+ if (!*argv) idx = 2;
+ else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+ ipcmd = cmdobjlist[idx];
+ return ipcmd(argv);
+}
+
+// ===========================================================================
+// Code for ip addr.
+// ===========================================================================
+
+static int print_addrinfo(struct nlmsghdr *h, int flag_l)
+{
+ struct rtattr *rta, *rta_tb[IFA_MAX+1] = {0,};
+ char *family = toybuf, *scope = toybuf+256, *label = toybuf+512,
+ *brd = toybuf+768, *peer = toybuf+1024, *any = toybuf+1280,
+ lbuf[INET6_ADDRSTRLEN] = {0,}, lbuf_ifa[INET6_ADDRSTRLEN] = {0,};
+ struct ifaddrmsg *ifa = NLMSG_DATA(h);
+ int len;
+
+ if ((len = h->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))) < 0) {
+ error_msg("wrong nlmsg len %d", len);
+ return 0;
+ }
+
+ for (rta = IFA_RTA(ifa); RTA_OK(rta, len); rta=RTA_NEXT(rta, len))
+ if (rta->rta_type <= IFA_MAX) rta_tb[rta->rta_type] = rta;
+
+ if (!rta_tb[IFA_LOCAL]) rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
+ if (!rta_tb[IFA_ADDRESS]) rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
+ if ((addrinfo.scope ^ ifa->ifa_scope)&addrinfo.scopemask) return 0;
+ if (addrinfo.ifindex && addrinfo.ifindex != ifa->ifa_index) return 0;
+
+ if (flag_l && addrinfo.label && ifa->ifa_family == AF_INET6) return 0;
+ if ((rta_tb[IFA_LABEL])) {
+ strcpy(label, RTA_DATA(rta_tb[IFA_LABEL]));
+ if(addrinfo.label && fnmatch(addrinfo.label, label, 0))
+ return 0;
+ }
+
+ if (TT.flush) {
+ if (ifa->ifa_index == addrinfo.ifindex) {
+ h->nlmsg_type = RTM_DELADDR;
+ h->nlmsg_flags = NLM_F_REQUEST;
+ send_nlmesg(RTM_DELADDR, 0, 0, h, h->nlmsg_len);
+ return 0;
+ }
+ }
+
+ if (h->nlmsg_type == RTM_DELADDR) printf("Deleted ");
+
+ if (TT.singleline) {
+ if (!if_indextoname(ifa->ifa_index, lbuf)) perror_exit(NULL);
+ printf("%u: %s",ifa->ifa_index, lbuf);
+ }
+
+ sprintf(scope, " scope %s ", namefromRPDB(ifa->ifa_scope, RPDB_rtscopes));
+
+ if (ifa->ifa_family == AF_INET) strcpy(family, " inet ");
+ else if (ifa->ifa_family == AF_INET6) strcpy(family, " inet6 ");
+ else sprintf(family, " family %d", ifa->ifa_family);
+
+ if (rta_tb[IFA_LOCAL]) {
+ if (!inet_ntop(ifa->ifa_family, RTA_DATA(rta_tb[IFA_LOCAL]),
+ lbuf, sizeof(lbuf))) perror_exit("inet");
+
+ sprintf(family+strlen(family), lbuf, strlen(lbuf));
+ if (!rta_tb[IFA_ADDRESS] || !memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]),
+ RTA_DATA(rta_tb[IFA_LOCAL]), 4))
+ sprintf(family+strlen(family), "/%d ", ifa->ifa_prefixlen);
+ else {
+ if (!inet_ntop(ifa->ifa_family, RTA_DATA(rta_tb[IFA_ADDRESS]),
+ lbuf_ifa, sizeof(lbuf_ifa))) perror_exit("inet");
+ sprintf(peer, " peer %s/%d ", lbuf_ifa, ifa->ifa_prefixlen);
+ }
+ }
+
+ if (addrinfo.to && strcmp(addrinfo.addr, lbuf))
+ return 0;
+
+ if (rta_tb[IFA_BROADCAST]) {
+ if (!inet_ntop(ifa->ifa_family, RTA_DATA(rta_tb[IFA_BROADCAST]),
+ lbuf, sizeof(lbuf))) perror_exit("inet");
+ sprintf(brd, " brd %s", lbuf);
+ }else brd = "";
+
+ if (rta_tb[IFA_ANYCAST]) {
+ if (!inet_ntop(ifa->ifa_family, RTA_DATA(rta_tb[IFA_ANYCAST]),
+ lbuf, sizeof(lbuf))) perror_exit("inet");
+ sprintf(any, " any %s", lbuf);
+ }
+
+ if (ifa->ifa_family == AF_INET)
+ printf("%s%s%s%s%s %c", family, brd, peer, scope, label,
+ (TT.singleline? '\0' : '\n'));
+ else printf("%s%s %c", family, scope, (TT.singleline? '\0' : '\n'));
+ if (TT.singleline && (ifa->ifa_family == AF_INET)) xputc('\n');
+
+ if (rta_tb[IFA_CACHEINFO]) {
+ struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
+
+ printf("%c valid_lft ", (TT.singleline? '\\' : '\0'));
+ if (ci->ifa_valid == 0xFFFFFFFFU) printf("forever");
+ else printf("%usec", ci->ifa_valid);
+ printf(" preferred_lft ");
+ if (ci->ifa_prefered == 0xFFFFFFFFU) printf("forever");
+ else printf("%dsec", ci->ifa_prefered);
+ xputc('\n');
+ }
+ return 0;
+}
+
+static int ipaddrupdate(char **argv)
+{
+ int length, cmd = !memcmp("add", argv[-1], strlen(argv[-1]))
+ ? RTM_NEWADDR: RTM_DELADDR;
+ int idx = 0,length_brd = 0, length_peer = 0,length_any = 0,length_local = 0,
+ scoped = 0;
+ char *dev = NULL,*label = NULL, reply[8192];
+
+ unsigned scope;
+ struct nlmsghdr *addr_ptr = NULL;
+ struct nlmsgerr *err = NULL;
+ struct arglist cmd_objectlist[] = {{"dev",0}, {"peer", 1},
+ {"remote", 2}, {"broadcast", 3}, {"brd", 4}, {"label", 5},
+ {"anycast", 6},{"scope", 7}, {"local", 8}, {NULL, -1}};
+ struct{
+ struct nlmsghdr nlm;
+ struct ifaddrmsg ifadd;
+ char buf[256];
+ } req;
+ typedef struct{
+ int family, bytelen, bitlen;
+ __u32 data[8];
+ }option_data;
+ option_data local;
+
+ memset(&req, 0, sizeof(req));
+ req.nlm.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+ req.nlm.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
+ req.nlm.nlmsg_type = cmd;
+ req.ifadd.ifa_family = TT.addressfamily;
+
+ while(*argv) {
+ idx = substring_to_idx(*argv, cmd_objectlist);
+ if (idx >= 0)
+ if (!*++argv)
+ error_exit("Incomplete Command line");
+ switch(idx) {
+ case 0:
+ dev = *argv;
+ break;
+ case 1:
+ case 2:
+ {
+ uint32_t addr[4] = {0,}, netmask = 0;
+ uint8_t len = 0;
+ parse_prefix(addr, &netmask, &len, *argv,
+ req.ifadd.ifa_family);
+ if (len)
+ req.ifadd.ifa_family = ((len == 4) ? AF_INET : AF_INET6);
+ length_peer = len;
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_ADDRESS, addr, len);
+ req.ifadd.ifa_prefixlen = netmask;
+ }
+ break;
+ case 3:
+ case 4:
+ if (*argv[0] == '+') {
+ length_brd = -1;
+ } else if (*argv[0] == '-') {
+ length_brd = -2;
+ } else {
+ uint32_t addr[4] = {0,};
+ uint8_t af = AF_UNSPEC;
+
+ if (get_prefix(addr, &af, *argv, req.ifadd.ifa_family))
+ error_exit("Invalid prefix");
+
+ length_brd = ((af == AF_INET6) ? 16 : 4);
+ if (req.ifadd.ifa_family == AF_UNSPEC)
+ req.ifadd.ifa_family = af;
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_BROADCAST, &addr, length_brd);
+ }
+ break;
+ case 5:
+ label = *argv;
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_LABEL, label, strlen(label) + 1);
+ break;
+ case 6:
+ {
+ uint32_t addr[4] = {0,};
+ uint8_t af = AF_UNSPEC;
+
+ if (get_prefix(addr, &af, *argv, req.ifadd.ifa_family))
+ error_exit("Invalid prefix");
+ length_any = ((af == AF_INET6) ? 16 : 4);
+ if (req.ifadd.ifa_family == AF_UNSPEC)
+ req.ifadd.ifa_family = af;
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_ANYCAST, &addr, length_brd);
+ }
+ break;
+ case 7:
+ scope = idxfromRPDB(*argv, RPDB_rtscopes);
+ if (scope){
+ if (!strcmp(*argv, "scope"))
+ error_exit("wrong scope '%s'", *argv);
+ }
+ req.ifadd.ifa_scope = scope;
+ scoped =1;
+ break;
+ default:
+ {
+ //local is by default
+ uint32_t addr[8] = {0,}, netmask = 0;
+ uint8_t len = 0;
+
+ parse_prefix(addr, &netmask, &len, *argv,
+ req.ifadd.ifa_family);
+ if (len)
+ req.ifadd.ifa_family = ((len == 4) ? AF_INET : AF_INET6);
+ length_local = len;
+ local.bitlen = netmask;
+ local.bytelen = len;
+ memcpy(local.data, addr, sizeof(local.data));
+ local.family = req.ifadd.ifa_family;
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_LOCAL, &local.data, local.bytelen);
+ }
+ break;
+ }
+ argv++;
+ }
+ if (!dev) error_exit("need \"dev \" argument");
+ if (label && strncmp(dev, label, strlen(dev)) != 0)
+ error_exit("\"dev\" (%s) must match \"label\" (%s)", dev, label);
+
+ if (length_peer == 0 && length_local && cmd != RTM_DELADDR){
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_ADDRESS, &local.data, local.bytelen);
+ }
+
+ if (length_brd < 0 && cmd != RTM_DELADDR){
+ int i;
+
+ if (req.ifadd.ifa_family != AF_INET)
+ error_exit("broadcast can be set only for IPv4 addresses");
+
+ if (local.bitlen <= 30) {
+ for (i = 31; i >= local.bitlen; i--) {
+ if (length_brd == -1)
+ local.data[0] |= htonl(1<<(31-i));
+ else
+ local.data[0] &= ~htonl(1<<(31-i));
+ }
+ add_string_to_rtattr(&req.nlm, sizeof(req),
+ IFA_BROADCAST, &local.data, local.bytelen);
+ length_brd = local.bytelen;
+ }
+ }
+ if (req.ifadd.ifa_prefixlen == 0)
+ req.ifadd.ifa_prefixlen = local.bitlen;
+ if (!scoped && (cmd != RTM_DELADDR) && (local.family == AF_INET)
+ && (local.bytelen >= 1 && *(uint8_t*)&local.data == 127))
+ req.ifadd.ifa_scope = RT_SCOPE_HOST;
+ req.ifadd.ifa_index = get_ifaceindex(dev, 1);
+
+ send_nlmesg(RTM_NEWADDR, 0, AF_UNSPEC, (void *)&req, req.nlm.nlmsg_len);
+ length = recv(TT.sockfd, reply, sizeof(reply), 0);
+ addr_ptr = (struct nlmsghdr *) reply;
+ for (; NLMSG_OK(addr_ptr, length); addr_ptr = NLMSG_NEXT(addr_ptr, length)) {
+ if (addr_ptr->nlmsg_type == NLMSG_DONE)
+ return 1;
+ if (addr_ptr->nlmsg_type == NLMSG_ERROR)
+ err = (struct nlmsgerr*) NLMSG_DATA(addr_ptr);
+ if (err->error != 0){
+ errno = -err->error;
+ perror_exit("RTNETLINK answers:");
+ }
+ }
+ return 0;
+}
+
+static int ipaddr_listflush(char **argv)
+{
+ int idx; uint32_t netmask = 0, found = 0;
+ char *tmp = NULL, *name = NULL;
+ struct double_list *dlist;
+ struct arglist cmd_objectlist[] = {{"to", 0}, {"scope", 1}, {"up", 2},
+ {"label", 3}, {"dev", 4}, {NULL, -1}};
+
+ TT.flush = *argv[-1] == 'f' ? 1 : 0;
+ memset(&addrinfo, 0, sizeof(addrinfo));
+
+ if (TT.flush) {
+ if (!*argv)
+ error_exit("Incomplete command for \"flush\"");
+ if (TT.addressfamily == AF_PACKET)
+ error_exit("Can't flush link Addressess");
+ }
+ addrinfo.scope = -1;
+ while (*argv) {
+ unsigned scope = 0;
+
+ switch (idx = substring_to_idx(*argv, cmd_objectlist)) {
+ case 0:
+ {// ADDR_TO
+ if (!*++argv) error_exit("Incomplete Command line");
+ else if(!strcmp(*argv, "0")) return 0;
+ uint32_t addr[4] = {0,};
+ uint8_t len = 0;
+
+ addrinfo.to = 1;
+ parse_prefix(addr, &netmask, &len, *argv, TT.addressfamily);
+ if (len)
+ TT.addressfamily = ((len == 4) ? AF_INET : AF_INET6);
+ addrinfo.addr = strtok(*argv, "/");
+ }
+ break;
+ case 1: // ADDR_SCOPE
+ if (!*++argv) error_exit("Incomplete Command line");
+ name = *argv;
+
+ addrinfo.scopemask = -1;
+ if (isdigit(**argv)) {
+ int idx = atolx(*argv);
+
+ name = xstrdup(namefromRPDB(idx, RPDB_rtscopes));
+ }
+ scope = idxfromRPDB(name, RPDB_rtscopes);
+
+ if (!scope && strcmp(name, "global")) {
+ if (strcmp(name, "all"))
+ error_exit("wrong scope '%s'", name);
+ scope = RT_SCOPE_NOWHERE;
+ addrinfo.scopemask = 0;
+ }
+ if (isdigit(**argv))
+ free(name);
+ addrinfo.scope = scope;
+ break;
+ case 2: // ADDR_UP
+ addrinfo.up = 1;
+ break;
+ case 3: // ADDR_LABEL
+ if (!*++argv) error_exit("Incomplete Command line");
+ addrinfo.label = *argv;
+ break;
+ case 4: // ADDR_DEV
+ if (!*++argv) error_exit("Incomplete Command line");
+
+ default:
+ if (TT.filter_dev)
+ error_exit("Either \"dev\" is duplicate or %s is garbage",
+ *argv);
+ TT.filter_dev = *argv;
+ break;
+ }
+ argv++;
+ }
+
+ link_show(&tmp);
+ while ( linfo && (dlist = dlist_pop(&linfo))){
+ struct linkdata *tmp = (struct linkdata*) dlist;
+ char *temp = &tmp->iface[0];
+
+ if (TT.filter_dev && strcmp(TT.filter_dev, temp))
+ continue;
+ found = 1;
+ if (TT.flush && addrinfo.label) ipaddr_print( tmp, 0);
+ if (addrinfo.up && !(tmp->flags & IFF_UP)){
+ ipaddr_print(tmp, 0);
+ continue;
+ }
+ if (addrinfo.label){
+ if ( fnmatch(addrinfo.label, temp, 0)) {
+ ipaddr_print(tmp, 1);
+ continue;
+ }
+ }
+ if (!TT.addressfamily && ! TT.flush ) print_link_output(tmp);
+
+ ipaddr_print(tmp, 0);
+ free(tmp);
+ }
+ if (TT.filter_dev && !found)
+ error_exit("Device \"%s\" doesn't exist. \n", TT.filter_dev);
+ return 0;
+}
+
+static int ipaddr_print( struct linkdata *link, int flag_l)
+{
+ struct nlmsghdr *addr_ptr;
+ int ip_match = 0;
+
+ addrinfo.ifindex = link->iface_idx;
+ send_nlmesg(RTM_GETADDR, NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,
+ AF_UNSPEC, NULL, 0);
+ if (TT.addressfamily == AF_PACKET) print_link_output(link);
+
+ if(addrinfo.label){
+ char *col = strchr(addrinfo.label, ':');
+ if (!col && (fnmatch(addrinfo.label, &link->iface[0], 0)))
+ return 0;
+ }
+
+ while (1){
+ int len = recv(TT.sockfd, TT.gbuf, sizeof(TT.gbuf), 0);
+ addr_ptr = (struct nlmsghdr *)TT.gbuf;
+ struct ifaddrmsg *addressInfo = NLMSG_DATA(addr_ptr);
+ char lbuf[INET6_ADDRSTRLEN];
+ struct rtattr *rta, *rta_tb[IFA_MAX+1] = {0,};
+
+ int len1 = addr_ptr->nlmsg_len - NLMSG_LENGTH(sizeof(*addressInfo));
+ if (len1 > 0) {
+ for (; NLMSG_OK(addr_ptr, len); addr_ptr = NLMSG_NEXT(addr_ptr, len)) {
+ addressInfo = NLMSG_DATA(addr_ptr);
+ if (TT.addressfamily && TT.addressfamily != addressInfo->ifa_family)
+ continue;
+ if (addrinfo.ifindex && addrinfo.ifindex != addressInfo->ifa_index)
+ continue;
+
+ if(addrinfo.to){
+ memset(rta_tb, 0, sizeof(rta_tb));
+ int rt_len = IFA_PAYLOAD(addr_ptr);
+ for (rta = IFA_RTA(addressInfo); RTA_OK(rta, rt_len); rta=RTA_NEXT(rta, rt_len)) {
+ if (rta->rta_type <= IFA_MAX) rta_tb[rta->rta_type] = rta;
+ }
+ if (!rta_tb[IFA_LOCAL]) rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
+ if (rta_tb[IFA_LOCAL]) {
+ if (!inet_ntop(TT.addressfamily, RTA_DATA(rta_tb[IFA_LOCAL]),
+ lbuf, sizeof(lbuf))) perror_exit("inet");
+ if (strcmp(addrinfo.addr, lbuf))
+ continue;
+ ip_match=1;
+ }
+ if(!ip_match)
+ continue;
+ }
+
+ if(!TT.flush){
+ if (addrinfo.scope != -1 && TT.addressfamily && TT.addressfamily ==
+ addressInfo->ifa_family &&
+ (addrinfo.ifindex == addressInfo->ifa_index)) {
+ if(addrinfo.scope != addressInfo->ifa_scope)
+ continue;
+ else if (addrinfo.up && (link->flags & IFF_UP))
+ print_link_output(link);
+ else if (!addrinfo.up) print_link_output(link);
+ }
+ if (TT.addressfamily &&
+ (addrinfo.ifindex == addressInfo->ifa_index) &&
+ (addrinfo.scope == -1)){
+ if (addrinfo.up && (link->flags & IFF_UP))
+ print_link_output(link);
+ else if (!addrinfo.up) print_link_output(link);
+ }
+ }
+ for (; NLMSG_OK(addr_ptr, len); addr_ptr = NLMSG_NEXT(addr_ptr, len)) {
+ if ((addr_ptr->nlmsg_type == RTM_NEWADDR))
+ print_addrinfo(addr_ptr, flag_l);
+ if ((addr_ptr->nlmsg_type == NLMSG_DONE) ||
+ (addr_ptr->nlmsg_type == NLMSG_ERROR) ||
+ (TT.flush && addrinfo.to))
+ goto ret_stop;
+ }
+ }
+ }
+ else
+ return 0;
+ }
+
+ret_stop:
+ return 0;
+}
+
+static int ipaddr(char **argv)
+{
+ int idx;
+ cmdobj ipcmd, cmdobjlist[] = {ipaddrupdate, ipaddr_listflush};
+ struct arglist cmd_objectlist[] = { {"add", 0}, {"delete", 0},
+ {"list", 1},{"show", 1},{"lst", 1}, {"flush", 1}, {NULL,-1}};
+
+ TT.is_addr++;
+ if (!*argv) idx = 1;
+ else if ((idx = substring_to_idx(*argv++, cmd_objectlist)) == -1) iphelp();
+
+ ipcmd = cmdobjlist[idx];
+ return ipcmd(argv);
+}
+
+// ===========================================================================
+// TODO: code for ip route.
+// ===========================================================================
+static int iproute(char **argv)
+{
+ printf("__FUNCTION__ = %s\n", __FUNCTION__);
+ return 0;
+}
+
+// ===========================================================================
+// code for ip rule.
+// ===========================================================================
+static void show_iprule_help(void)
+{
+ char *errmsg = "Usage: ip rule [ list | add | del ] SELECTOR ACTION\n"
+ "SELECTOR := [ from PREFIX ] [ to PREFIX ] [pref NUMBER] [ tos TOS ]\n"
+ " [ fwmark FWMARK] [ dev/iif STRING ] [type TYPE]\n"
+ "ACTION := [ table TABLE_ID ] [ realms [SRCREALM/]DSTREALM ]";
+
+ error_exit(errmsg);
+}
+
+static int ruleupdate(char **argv)
+{
+ int8_t idx, tflag = 0, opt = (*argv[-1] == 'a') ? RTM_NEWRULE : RTM_DELRULE;
+ struct arglist options[] = {{"from", 0}, {"to", 1}, {"preference", 2},
+ {"order", 2}, {"priority", 2}, {"tos", 3}, {"dsfield", 3}, {"fwmark", 4},
+ {"realms", 5}, {"table", 6}, {"lookup", 6}, {"dev", 7}, {"iif", 7},
+ {"nat", 8}, {"map-to", 8}, {"type", 9}, {"help", 10}, {NULL, -1}};
+ struct {
+ struct nlmsghdr mhdr;
+ struct rtmsg msg;
+ char buf[1024];
+ } request;
+
+ memset(&request, 0, sizeof(request));
+ request.mhdr.nlmsg_type = opt;
+ request.mhdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
+ request.mhdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK |
+ ((opt == RTM_DELRULE) ? 0 : NLM_F_CREATE | NLM_F_EXCL);
+ request.msg.rtm_family = TT.addressfamily;
+ request.msg.rtm_protocol = RTPROT_BOOT;
+ request.msg.rtm_scope = RT_SCOPE_UNIVERSE;
+ request.msg.rtm_table = 0;
+ request.msg.rtm_type = ((opt == RTM_DELRULE) ? RTN_UNSPEC : RTN_UNICAST);
+
+ for (; *argv; argv++) {
+ switch ((idx = substring_to_idx(*argv, options))) {
+ case 0:
+ case 1:
+ { // e.g. from IP/Netmask and to IP/Netmask.
+ uint32_t addr[4] = {0,}, netmask = 0;
+ uint8_t len = 0, *tmp;
+
+ if (!*++argv) error_exit("'%s': Missing Prefix", argv[-1]);
+ parse_prefix(addr, &netmask, &len, *argv, request.msg.rtm_family);
+
+ tmp = idx ? &request.msg.rtm_dst_len : &request.msg.rtm_src_len;
+ if (!netmask) *tmp = 0;
+ else *tmp = netmask;
+
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ (idx ? RTA_DST : RTA_SRC), addr, len);
+ }
+ break;
+ case 2:
+ case 4:
+ { // e.g. Preference p# and fwmark MARK
+ uint32_t pref;
+ char *ptr;
+
+ if (!*++argv)
+ error_exit("Missing %s", (idx == 2) ? "Preference" : "fwmark");
+ pref = strtoul(*argv, &ptr, 0);
+ if (!ptr || (ptr == *argv) || *ptr || pref > 0xFFFFFFFFUL)
+ error_exit("Invalid %s", (idx == 2) ? "Preference" : "fwmark");
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ ((idx == 2) ? RTA_PRIORITY : RTA_PROTOINFO),
+ (void *)&pref, sizeof(uint32_t));
+ }
+ break;
+ case 3:
+ {
+ if (!*++argv) error_exit("Missing TOS key");
+ request.msg.rtm_tos = idxfromRPDB(*argv, RPDB_rtdsfield);
+ }
+ break;
+ case 5:
+ { // e.g. realms FROM_realm/TO_realm
+ uint32_t realms = 0;
+ char *ptr;
+
+ if (!*++argv) error_exit("Missing REALMSID");
+ if ((ptr = strchr(*argv, '/'))) {
+ *ptr = 0;
+ realms = idxfromRPDB(*argv, RPDB_rtrealms);
+ realms <<= 16;
+ *ptr++ = '/';
+ } else ptr = *argv;
+ realms |= idxfromRPDB(ptr, RPDB_rtrealms);
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ RTA_FLOW, (void *)&realms, sizeof(uint32_t));
+ }
+ break;
+ case 6:
+ { // e.g. table tid/tableName
+ if (!*++argv) error_exit("Missing TableID");
+ request.msg.rtm_table = idxfromRPDB(*argv, RPDB_rttables);
+ tflag = 1;
+ }
+ break;
+ case 7:
+ {
+ if (!*++argv) error_exit("Missing dev/iif NAME");
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ RTA_IIF, *argv, strlen(*argv)+1);
+ }
+ break;
+ case 8:
+ {
+ uint32_t addr[4] = {0,};
+ uint8_t af = AF_UNSPEC;
+
+ if (!*++argv) error_exit("Missing nat/map-to ADDRESS");
+ if (get_prefix(addr, &af /* Un-used variable */, *argv, AF_INET))
+ error_exit("Invalid mapping Address");
+
+ add_string_to_rtattr(&request.mhdr, sizeof(request),
+ RTA_GATEWAY, addr, sizeof(uint32_t));
+ request.msg.rtm_type = RTN_NAT;
+ }
+ break;
+ case 9:
+ {
+ if (!*++argv) error_exit("TYPE Missing");
+ request.msg.rtm_type = rtmtype_str2idx(*argv);
+ }
+ break;
+ case 10:
+ show_iprule_help();
+ break; // Unreachable code.
+ default:
+ error_exit("Invalid argument '%s'", *argv);
+ break; // Unreachable code.
+ }
+ }
+
+ if (!request.msg.rtm_family) request.msg.rtm_family = AF_INET;
+ if (!tflag && opt == RTM_NEWRULE) request.msg.rtm_table = RT_TABLE_MAIN;
+
+ send_nlmesg(0, 0, 0, &request, sizeof(request));
+ return (filter_nlmesg(NULL, NULL));
+}
+
+static int show_rules(struct nlmsghdr *mhdr,
+ char **argv __attribute__ ((__unused__)))
+{
+ struct rtmsg *msg = NLMSG_DATA(mhdr);
+ struct rtattr *rta, *attr[RTA_MAX+1] = {0,};
+ int32_t tvar, msglen = mhdr->nlmsg_len - NLMSG_LENGTH(sizeof(struct rtmsg));
+ int hlen = ((msg->rtm_family == AF_INET) ? 32
+ : ((msg->rtm_family == AF_INET6) ? 128 : -1));
+
+ if (mhdr->nlmsg_type != RTM_NEWRULE) return 0;
+ if (msglen < 0) return 1;
+
+ tvar = msglen;
+ for (rta = RTM_RTA(msg); RTA_OK(rta, tvar); rta=RTA_NEXT(rta, tvar))
+ if (rta->rta_type <= RTA_MAX) attr[rta->rta_type] = rta;
+
+ if (tvar) error_msg("deficit %d, rtalen = %d!", tvar, rta->rta_len);
+
+ printf("%u:\tfrom ", attr[RTA_PRIORITY] ?
+ *(unsigned *)RTA_DATA(attr[RTA_PRIORITY]) : 0);
+
+ if (attr[RTA_SRC]) {
+ printf("%s", (msg->rtm_family == AF_INET || msg->rtm_family == AF_INET6)
+ ? inet_ntop(msg->rtm_family, RTA_DATA(attr[RTA_SRC]),
+ toybuf, sizeof(toybuf))
+ : "???");
+ (msg->rtm_src_len != hlen) ? printf("/%u", msg->rtm_src_len) : 0;
+ } else msg->rtm_src_len ? printf("0/%d", msg->rtm_src_len) : printf("all");
+
+ xputc(' ');
+ if (attr[RTA_DST]) {
+ printf("to %s", (msg->rtm_family == AF_INET || msg->rtm_family == AF_INET6)
+ ? inet_ntop(msg->rtm_family, RTA_DATA(attr[RTA_DST]),
+ toybuf, sizeof(toybuf)) : "???");
+ (msg->rtm_dst_len != hlen) ? printf("/%u", msg->rtm_dst_len) : xputc(' ');
+ } else if (msg->rtm_dst_len)
+ printf("to 0/%d ", msg->rtm_dst_len);
+
+ if (msg->rtm_tos)
+ printf("tos %s ", namefromRPDB(msg->rtm_tos, RPDB_rtdsfield));
+
+ if (attr[RTA_PROTOINFO])
+ printf("fwmark %#x ", *(uint32_t*)RTA_DATA(attr[RTA_PROTOINFO]));
+
+ if (attr[RTA_IIF]) printf("iif %s ", (char*)RTA_DATA(attr[RTA_IIF]));
+
+ if (msg->rtm_table)
+ printf("lookup %s ", namefromRPDB(msg->rtm_table, RPDB_rttables));
+
+ if (attr[RTA_FLOW]) {
+ u_int32_t from, to = *(u_int32_t *)RTA_DATA(attr[RTA_FLOW]);
+ char *format = "realms %s/";
+
+ to = (from = (to >> 16)) & 0xFFFF;
+ format = (from ? format: "%s");
+ printf(format, namefromRPDB((from ? from : to), RPDB_rtrealms));
+ }
+
+ if (msg->rtm_type == RTN_NAT) {
+ if (!attr[RTA_GATEWAY]) printf("masquerade");
+ else printf("map-to %s ", inet_ntop(msg->rtm_family,
+ RTA_DATA(attr[RTA_GATEWAY]), toybuf, sizeof(toybuf)));
+ } else if (msg->rtm_type != RTN_UNICAST)
+ printf("%s", rtmtype_idx2str(msg->rtm_type));
+
+ xputc('\n');
+ return 0;
+}
+
+static int rulelist(char **argv)
+{
+ if (*argv) {
+ error_msg("'ip rule show' does not take any arguments.");
+ return 1;
+ }
+ send_nlmesg(RTM_GETRULE, NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
+ ((TT.addressfamily != AF_UNSPEC) ? TT.addressfamily : AF_INET), NULL, 0);
+ return filter_nlmesg(show_rules, argv);
+}
+
+static int iprule(char **argv)
+{
+ int idx;
+ struct arglist options[] = {{"add", 0}, {"delete", 0}, {"list", 1},
+ {"show", 1}, {NULL, -1}};
+ cmdobj ipcmd, cmdobjlist[] = {ruleupdate, rulelist};
+
+ if (!*argv) idx = 1;
+ else if ((idx = substring_to_idx(*argv++, options)) == -1)
+ show_iprule_help();
+ ipcmd = cmdobjlist[idx];
+ return ipcmd(argv);
+}
+//============================================================================
+// TODO: code for ip tunnel.
+//============================================================================
+static int iptunnel(char **argv)
+{
+ printf("__FUNCTION__ = %s\n", __FUNCTION__);
+ return 0;
+}
+
+// ===========================================================================
+// Common code, which is used for all ip options.
+// ===========================================================================
+
+// Parse netlink messages and call input callback handler for action
+static int filter_nlmesg(int (*fun)(struct nlmsghdr *mhdr, char **argv),
+ char **argv)
+{
+ while (1) {
+ struct nlmsghdr *mhdr;
+ int msglen = recv(TT.sockfd, TT.gbuf, MESG_LEN, 0);
+
+ if ((msglen < 0) && (errno == EINTR || errno == EAGAIN)) continue;
+ else if (msglen < 0) {
+ error_msg("netlink receive error %s", strerror(errno));
+ return 1;
+ } else if (!msglen) {
+ error_msg("EOF on netlink");
+ return 1;
+ }
+
+ for (mhdr = (struct nlmsghdr*)TT.gbuf; NLMSG_OK(mhdr, msglen);
+ mhdr = NLMSG_NEXT(mhdr, msglen)) {
+ int err;
+ if (mhdr->nlmsg_pid != getpid())
+ continue;
+ switch (mhdr->nlmsg_type) {
+ case NLMSG_DONE:
+ return 0;
+ case NLMSG_ERROR:
+ {
+ struct nlmsgerr *merr = (struct nlmsgerr*)NLMSG_DATA(mhdr);
+
+ if (merr->error == 0) return 0;
+ if (mhdr->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
+ error_msg("ERROR truncated");
+ else {
+ errno = -merr->error;
+ perror_msg("RTNETLINK answers");
+ }
+ return 1;
+ }
+ default:
+ if (fun && (err = fun(mhdr, argv))) return err;
+ break;
+ }
+ } // End of for loop.
+ } // End of while loop.
+ return 0;
+}
+
+void ip_main(void)
+{
+ char **optargv = toys.argv;
+ //TT.addressfamily = AF_UNSPEC;
+ int idx, isip = !(toys.which->name[2]); //1 -> if only ip
+ cmdobj ipcmd, cmdobjlist[] = {ipaddr, iplink, iproute, iprule, iptunnel};
+
+ for (++optargv; *optargv; ++optargv) {
+ char *ptr = *optargv;
+ struct arglist ip_options[] = {{"oneline", 0}, {"family", 1},
+ {"4", 1}, {"6", 1}, {"0", 1}, {"stats", 2}, {NULL, -1}};
+
+ if (*ptr != '-') break;
+ else if ((*(ptr+1) == '-') && (*(ptr+2))) ptr +=2;
+ //escape "--" and stop ip arg parsing.
+ else if ((*(ptr+1) == '-') && (!*(ptr+2))) {
+ *ptr +=1;
+ break;
+ } else ptr +=1;
+ switch (substring_to_idx(ptr, ip_options)) {
+ case 0: TT.singleline = 1;
+ break;
+ case 1: {
+ if (isdigit(*ptr)) {
+ long num = atolx(ptr);
+ if (num == 4) TT.addressfamily = AF_INET;
+ else if (num == 6) TT.addressfamily = AF_INET6;
+ else TT.addressfamily = AF_PACKET;
+ } else {
+ struct arglist ip_aflist[] = {{"inet", AF_INET},
+ {"inet6", AF_INET6}, {"link", AF_PACKET}, {NULL, -1}};
+
+ if (!*++optargv) iphelp();
+ if ((TT.addressfamily = string_to_idx(*optargv, ip_aflist)) == -1)
+ error_exit("wrong family '%s'", *optargv);
+ }
+ }
+ break;
+ case 2:
+ TT.stats++;
+ break;
+ default: iphelp();
+ break; // unreachable code.
+ }
+ }
+
+ TT.sockfd = xsocket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+
+ if (isip) {// only for ip
+ if (*optargv) {
+ struct arglist ip_objectlist[] = { {"address", 0}, {"link", 1},
+ {"route", 2}, {"rule", 3}, {"tunnel", 4}, {"tunl", 4}, {NULL, -1}};
+
+ if ((idx = substring_to_idx(*optargv, ip_objectlist)) == -1) iphelp();
+ ipcmd = cmdobjlist[idx];
+ toys.exitval = ipcmd(++optargv);
+ } else iphelp();
+ } else {
+ struct arglist ip_objectlist[] = { {"ipaddr", 0}, {"iplink", 1},
+ {"iproute", 2}, {"iprule", 3}, {"iptunnel", 4}, {NULL, -1}};
+ if ((idx = string_to_idx(toys.which->name, ip_objectlist)) == -1)
+ iphelp();
+ ipcmd = cmdobjlist[idx];
+ toys.exitval = ipcmd(optargv);
+ }
+ xclose(TT.sockfd);
+}