X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=ifconfig.c;h=75bcf38e8f25a2946389f17737f4a25d18320d82;hb=ce4a586edb6abd90c1036666159f831bd2a58895;hp=a3e2c0fdbb7da0a40f6e86896b05a2f2d76f5dbb;hpb=cbe31dace5fb24304694d399b9eb267fbe752516;p=oweals%2Fbusybox.git diff --git a/ifconfig.c b/ifconfig.c index a3e2c0fdb..75bcf38e8 100644 --- a/ifconfig.c +++ b/ifconfig.c @@ -15,15 +15,25 @@ * Foundation; either version 2 of the License, or (at * your option) any later version. * - * $Id: ifconfig.c,v 1.3 2001/02/20 06:14:07 andersen Exp $ + * $Id: ifconfig.c,v 1.8 2001/03/12 09:57:59 mjn3 Exp $ * */ +/* + * Heavily modified by Manuel Novoa III Mar 6, 2001 + * + * From initial port to busybox, removed most of the redundancy by + * converting to a table-driven approach. Added several (optional) + * args missing from initial port. + * + * Still missing: media, tunnel. + */ + #include #include -#include #include // strcmp and friends #include // isdigit and friends +#include /* offsetof */ #include #include #include @@ -34,443 +44,449 @@ #include #include "busybox.h" -static int sockfd; /* socket fd we use to manipulate stuff with */ +#ifdef BB_FEATURE_IFCONFIG_SLIP +#include +#endif -/* print usage and exit */ +/* I don't know if this is needed for busybox or not. Anyone? */ +#define QUESTIONABLE_ALIAS_CASE -#define _(x) x -/* Set a certain interface flag. */ -static int -set_flag(char *ifname, short flag) -{ - struct ifreq ifr; - - strcpy(ifr.ifr_name, ifname); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { - perror("SIOCGIFFLAGS"); - return (-1); - } - strcpy(ifr.ifr_name, ifname); - ifr.ifr_flags |= flag; - if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { - perror("SIOCSIFFLAGS"); - return -1; - } - return (0); -} +/* Defines for glibc2.0 users. */ +#ifndef SIOCSIFTXQLEN +#define SIOCSIFTXQLEN 0x8943 +#define SIOCGIFTXQLEN 0x8942 +#endif +/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */ +#ifndef ifr_qlen +#define ifr_qlen ifr_ifru.ifru_mtu +#endif -/* Clear a certain interface flag. */ -static int -clr_flag(char *ifname, short flag) -{ - struct ifreq ifr; - - strcpy(ifr.ifr_name, ifname); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { - perror("SIOCGIFFLAGS"); - return -1; - } - strcpy(ifr.ifr_name, ifname); - ifr.ifr_flags &= ~flag; - if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { - perror("SIOCSIFFLAGS"); - return -1; - } - return (0); -} +#ifndef IFF_DYNAMIC +#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ +#endif -/* resolve XXX.YYY.ZZZ.QQQ -> binary */ +/* + * Here are the bit masks for the "flags" member of struct options below. + * N_ signifies no arg prefix; M_ signifies arg prefixed by '-'. + * CLR clears the flag; SET sets the flag; ARG signifies (optional) arg. + */ +#define N_CLR 0x01 +#define M_CLR 0x02 +#define N_SET 0x04 +#define M_SET 0x08 +#define N_ARG 0x10 +#define M_ARG 0x20 + +#define M_MASK (M_CLR | M_SET | M_ARG) +#define N_MASK (N_CLR | N_SET | N_ARG) +#define SET_MASK (N_SET | M_SET) +#define CLR_MASK (N_CLR | M_CLR) +#define SET_CLR_MASK (SET_MASK | CLR_MASK) +#define ARG_MASK (M_ARG | N_ARG) + +/* + * Here are the bit masks for the "arg_flags" member of struct options below. + */ -static int -INET_resolve(char *name, struct sockaddr_in *sin) -{ - sin->sin_family = AF_INET; - sin->sin_port = 0; +/* + * cast type: + * 00 int + * 01 char * + * 02 HOST_COPY in_ether + * 03 HOST_COPY INET_resolve + */ +#define A_CAST_TYPE 0x03 +/* + * map type: + * 00 not a map type (mem_start, io_addr, irq) + * 04 memstart (unsigned long) + * 08 io_addr (unsigned short) + * 0C irq (unsigned char) + */ +#define A_MAP_TYPE 0x0C +#define A_ARG_REQ 0x10 /* Set if an arg is required. */ +#define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */ +#define A_SET_AFTER 0x40 /* Set a flag at the end. */ +#define A_COLON_CHK 0x80 /* Is this needed? See below. */ + +/* + * These defines are for dealing with the A_CAST_TYPE field. + */ +#define A_CAST_CHAR_PTR 0x01 +#define A_CAST_RESOLVE 0x01 +#define A_CAST_HOST_COPY 0x02 +#define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY +#define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE) + +/* + * These defines are for dealing with the A_MAP_TYPE field. + */ +#define A_MAP_ULONG 0x04 /* memstart */ +#define A_MAP_USHORT 0x08 /* io_addr */ +#define A_MAP_UCHAR 0x0C /* irq */ - /* Default is special, meaning 0.0.0.0. */ - if (!strcmp(name, "default")) { - sin->sin_addr.s_addr = INADDR_ANY; - return (1); - } - /* Look to see if it's a dotted quad. */ - if (inet_aton(name, &sin->sin_addr)) { - return 0; - } - /* guess not.. */ - return -1; -} +/* + * Define the bit masks signifying which operations to perform for each arg. + */ -/* Input an Ethernet address and convert to binary. */ -static int -in_ether(char *bufp, struct sockaddr *sap) -{ - unsigned char *ptr; - char c, *orig; - int i; - unsigned val; - - sap->sa_family = ARPHRD_ETHER; - ptr = sap->sa_data; - - i = 0; - orig = bufp; - while ((*bufp != '\0') && (i < ETH_ALEN)) { - val = 0; - c = *bufp++; - if (isdigit(c)) - val = c - '0'; - else if (c >= 'a' && c <= 'f') - val = c - 'a' + 10; - else if (c >= 'A' && c <= 'F') - val = c - 'A' + 10; - else { -#ifdef DEBUG - fprintf(stderr, - _("in_ether(%s): invalid ether address!\n"), - orig); +#define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/) +#define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/) +#define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/) +#define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG) +#define ARG_IO_ADDR (A_ARG_REQ | A_MAP_USHORT) +#define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR) +#define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE) +#define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK) +#define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER) +#define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER) +#define ARG_POINTOPOINT (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER) +#define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR) +#define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR) +#define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK) + + +/* + * Set up the tables. Warning! They must have corresponding order! + */ + +struct arg1opt { + const char *name; + unsigned short selector; + unsigned short ifr_offset; +}; + +struct options { + const char *name; + const unsigned char flags; + const unsigned char arg_flags; + const unsigned short selector; +}; + +#define ifreq_offsetof(x) offsetof(struct ifreq, x) + +static const struct arg1opt Arg1Opt[] = { + {"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)}, + {"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)}, + {"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)}, + {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)}, + {"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)}, + {"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)}, +#ifdef BB_FEATURE_IFCONFIG_HW + {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)}, #endif - errno = EINVAL; - return (-1); - } - val <<= 4; - c = *bufp; - if (isdigit(c)) - val |= c - '0'; - else if (c >= 'a' && c <= 'f') - val |= c - 'a' + 10; - else if (c >= 'A' && c <= 'F') - val |= c - 'A' + 10; - else if (c == ':' || c == 0) - val >>= 4; - else { -#ifdef DEBUG - fprintf(stderr, - _("in_ether(%s): invalid ether address!\n"), - orig); + {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)}, +#ifdef SIOCSKEEPALIVE + {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)}, #endif - errno = EINVAL; - return (-1); - } - if (c != 0) - bufp++; - *ptr++ = (unsigned char) (val & 0377); - i++; - - /* We might get a semicolon here - not required. */ - if (*bufp == ':') - bufp++; - - } +#ifdef SIOCSOUTFILL + {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)}, +#endif +#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)}, + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)}, + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)}, +#endif + /* Last entry if for unmatched (possibly hostname) arg. */ + {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, +}; + +static const struct options OptArray[] = { + {"metric", N_ARG, ARG_METRIC, 0}, + {"mtu", N_ARG, ARG_MTU, 0}, + {"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0}, + {"dstaddr", N_ARG, ARG_DSTADDR, 0}, + {"netmask", N_ARG, ARG_NETMASK, 0}, + {"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST}, +#ifdef BB_FEATURE_IFCONFIG_HW + {"hw", N_ARG, ARG_HW, 0}, +#endif + {"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT}, +#ifdef SIOCSKEEPALIVE + {"keepalive", N_ARG, ARG_KEEPALIVE, 0}, +#endif +#ifdef SIOCSOUTFILL + {"outfill", N_ARG, ARG_OUTFILL, 0}, +#endif +#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ + {"mem_start", N_ARG, ARG_MEM_START, 0}, + {"io_addr", N_ARG, ARG_IO_ADDR, 0}, + {"irq", N_ARG, ARG_IRQ, 0}, +#endif + {"arp", N_CLR | M_SET, 0, IFF_NOARP}, + {"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS}, + {"promisc", N_SET | M_CLR, 0, IFF_PROMISC}, + {"multicast", N_SET | M_CLR, 0, IFF_MULTICAST}, + {"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI}, + {"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC}, + {"up", N_SET , 0, (IFF_UP | IFF_RUNNING)}, + {"down", N_CLR , 0, IFF_UP}, + { NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)} +}; + +/* + * A couple of prototypes. + */ - if(i != ETH_ALEN) { - errno = EINVAL; - return -1; - } +#ifdef BB_FEATURE_IFCONFIG_HW +static int in_ether(char *bufp, struct sockaddr *sap); +#endif - return 0; -} +#ifdef BB_FEATURE_IFCONFIG_STATUS +extern int interface_opt_a; +extern int display_interfaces(char *ifname); +#endif + +/* + * Our main function. + */ int ifconfig_main(int argc, char **argv) { struct ifreq ifr; - struct sockaddr_in sa; - struct sockaddr sa2; - char **spp; - int goterr = 0; - int r, didnetmask = 0; + struct sockaddr_in sai; +#ifdef BB_FEATURE_IFCONFIG_HW + struct sockaddr sa; +#endif + const struct arg1opt *a1op; + const struct options *op; + int sockfd; /* socket fd we use to manipulate stuff with */ + int goterr; + int selector; + char *p; char host[128]; + unsigned char mask; + unsigned char did_flags; + + goterr = 0; + did_flags = 0; + + /* skip argv[0] */ + ++argv; + --argc; + +#ifdef BB_FEATURE_IFCONFIG_STATUS + if ((argc > 0) && (strcmp(*argv,"-a") == 0)) { + interface_opt_a = 1; + --argc; + ++argv; + } +#endif - if(argc < 2) { + if(argc <= 1) { +#ifdef BB_FEATURE_IFCONFIG_STATUS + return display_interfaces(argc ? *argv : NULL); +#else show_usage(); +#endif } /* Create a channel to the NET kernel. */ if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { - perror("socket"); - exit(1); + perror_msg_and_die("socket"); } - /* skip argv[0] */ - - argc--; - argv++; - - spp = argv; - /* get interface name */ - - safe_strncpy(ifr.ifr_name, *spp++, IFNAMSIZ); + safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ); /* Process the remaining arguments. */ - while (*spp != (char *) NULL) { - if (!strcmp(*spp, "arp")) { - goterr |= clr_flag(ifr.ifr_name, IFF_NOARP); - spp++; - continue; - } - if (!strcmp(*spp, "-arp")) { - goterr |= set_flag(ifr.ifr_name, IFF_NOARP); - spp++; - continue; - } - - if (!strcmp(*spp, "trailers")) { - goterr |= clr_flag(ifr.ifr_name, IFF_NOTRAILERS); - spp++; - continue; - } - if (!strcmp(*spp, "-trailers")) { - goterr |= set_flag(ifr.ifr_name, IFF_NOTRAILERS); - spp++; - continue; - } - if (!strcmp(*spp, "promisc")) { - goterr |= set_flag(ifr.ifr_name, IFF_PROMISC); - spp++; - continue; - } - if (!strcmp(*spp, "-promisc")) { - goterr |= clr_flag(ifr.ifr_name, IFF_PROMISC); - spp++; - continue; - } - if (!strcmp(*spp, "multicast")) { - goterr |= set_flag(ifr.ifr_name, IFF_MULTICAST); - spp++; - continue; - } - if (!strcmp(*spp, "-multicast")) { - goterr |= clr_flag(ifr.ifr_name, IFF_MULTICAST); - spp++; - continue; + while (*++argv != (char *) NULL) { + p = *argv; + mask = N_MASK; + if (*p == '-') { /* If the arg starts with '-'... */ + ++p; /* advance past it and */ + mask = M_MASK; /* set the appropriate mask. */ } - if (!strcmp(*spp, "allmulti")) { - goterr |= set_flag(ifr.ifr_name, IFF_ALLMULTI); - spp++; - continue; - } - if (!strcmp(*spp, "-allmulti")) { - goterr |= clr_flag(ifr.ifr_name, IFF_ALLMULTI); - spp++; - continue; - } - if (!strcmp(*spp, "up")) { - goterr |= set_flag(ifr.ifr_name, (IFF_UP | IFF_RUNNING)); - spp++; - continue; - } - if (!strcmp(*spp, "down")) { - goterr |= clr_flag(ifr.ifr_name, IFF_UP); - spp++; - continue; - } - - if (!strcmp(*spp, "metric")) { - if (*++spp == NULL) - show_usage(); - ifr.ifr_metric = atoi(*spp); - if (ioctl(sockfd, SIOCSIFMETRIC, &ifr) < 0) { - fprintf(stderr, "SIOCSIFMETRIC: %s\n", strerror(errno)); - goterr++; - } - spp++; - continue; - } - if (!strcmp(*spp, "mtu")) { - if (*++spp == NULL) - show_usage(); - ifr.ifr_mtu = atoi(*spp); - if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) { - fprintf(stderr, "SIOCSIFMTU: %s\n", strerror(errno)); - goterr++; + for (op = OptArray ; op->name ; op++) { /* Find table entry. */ + if (strcmp(p,op->name) == 0) { /* If name matches... */ + if ((mask &= op->flags)) { /* set the mask and go. */ + goto FOUND_ARG;; + } + /* If we get here, there was a valid arg with an */ + /* invalid '-' prefix. */ + ++goterr; + goto LOOP; } - spp++; - continue; } -#ifdef SIOCSKEEPALIVE - if (!strcmp(*spp, "keepalive")) { - if (*++spp == NULL) + + /* We fell through, so treat as possible hostname. */ + a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1; + mask = op->arg_flags; + goto HOSTNAME; + + FOUND_ARG: + if (mask & ARG_MASK) { + mask = op->arg_flags; + a1op = Arg1Opt + (op - OptArray); + if (mask & A_NETMASK & did_flags) { show_usage(); - ifr.ifr_data = (caddr_t) atoi(*spp); - if (ioctl(sockfd, SIOCSKEEPALIVE, &ifr) < 0) { - fprintf(stderr, "SIOCSKEEPALIVE: %s\n", strerror(errno)); - goterr++; } - spp++; - continue; - } + if (*++argv == NULL) { + if (mask & A_ARG_REQ) { + show_usage(); + } else { + --argv; + mask &= A_SET_AFTER; /* just for broadcast */ + } + } else { /* got an arg so process it */ + HOSTNAME: + did_flags |= (mask & A_NETMASK); + if (mask & A_CAST_HOST_COPY) { +#ifdef BB_FEATURE_IFCONFIG_HW + if (mask & A_CAST_RESOLVE) { #endif - -#ifdef SIOCSOUTFILL - if (!strcmp(*spp, "outfill")) { - if (*++spp == NULL) - show_usage(); - ifr.ifr_data = (caddr_t) atoi(*spp); - if (ioctl(sockfd, SIOCSOUTFILL, &ifr) < 0) { - fprintf(stderr, "SIOCSOUTFILL: %s\n", strerror(errno)); - goterr++; - } - spp++; - continue; - } + safe_strncpy(host, *argv, (sizeof host)); + sai.sin_family = AF_INET; + sai.sin_port = 0; + if (!strcmp(host, "default")) { + /* Default is special, meaning 0.0.0.0. */ + sai.sin_addr.s_addr = INADDR_ANY; + } else if (inet_aton(host, &sai.sin_addr) == 0) { + /* It's not a dotted quad. */ + ++goterr; + continue; + } + p = (char *) &sai; +#ifdef BB_FEATURE_IFCONFIG_HW + } else { /* A_CAST_HOST_COPY_IN_ETHER */ + /* This is the "hw" arg case. */ + if (strcmp("ether", *argv) || (*++argv == NULL)) { + show_usage(); + } + safe_strncpy(host, *argv, (sizeof host)); + if (in_ether(host, &sa)) { + fprintf(stderr, "invalid hw-addr %s\n", host); + ++goterr; + continue; + } + p = (char *) &sa; + } #endif - - if (!strcmp(*spp, "-broadcast")) { - goterr |= clr_flag(ifr.ifr_name, IFF_BROADCAST); - spp++; - continue; - } - if (!strcmp(*spp, "broadcast")) { - if (*++spp != NULL) { - safe_strncpy(host, *spp, (sizeof host)); - if (INET_resolve(host, &sa) < 0) { - goterr++; - spp++; - continue; - } - memcpy((char *) &ifr.ifr_broadaddr, - (char *) &sa, - sizeof(struct sockaddr)); - if (ioctl(sockfd, SIOCSIFBRDADDR, &ifr) < 0) { - perror("SIOCSIFBRDADDR"); - goterr++; + memcpy((((char *)(&ifr)) + a1op->ifr_offset), + p, sizeof(struct sockaddr)); + } else { + unsigned int i = strtoul(*argv,NULL,0); + p = ((char *)(&ifr)) + a1op->ifr_offset; +#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ + if (mask & A_MAP_TYPE) { + if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) { + ++goterr; + continue; + } + if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) { + *((unsigned char *) p) = i; + } else if (mask & A_MAP_USHORT) { + *((unsigned short *) p) = i; + } else { + *((unsigned long *) p) = i; + } + } else +#endif + if (mask & A_CAST_CHAR_PTR) { + *((caddr_t *) p) = (caddr_t) i; + } else { /* A_CAST_INT */ + *((int *) p) = i; + } } - spp++; - } - goterr |= set_flag(ifr.ifr_name, IFF_BROADCAST); - continue; - } - if (!strcmp(*spp, "dstaddr")) { - if (*++spp == NULL) - show_usage(); - safe_strncpy(host, *spp, (sizeof host)); - if (INET_resolve(host, &sa) < 0) { - goterr++; - spp++; - continue; - } - memcpy((char *) &ifr.ifr_dstaddr, (char *) &sa, - sizeof(struct sockaddr)); - if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) { - fprintf(stderr, "SIOCSIFDSTADDR: %s\n", - strerror(errno)); - goterr++; - } - spp++; - continue; - } - if (!strcmp(*spp, "netmask")) { - if (*++spp == NULL || didnetmask) - show_usage(); - safe_strncpy(host, *spp, (sizeof host)); - if (INET_resolve(host, &sa) < 0) { - goterr++; - spp++; - continue; - } - didnetmask++; - memcpy((char *) &ifr.ifr_netmask, (char *) &sa, - sizeof(struct sockaddr)); - if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) { - perror("SIOCSIFNETMASK"); - goterr++; - } - spp++; - continue; - } - - if (!strcmp(*spp, "-pointopoint")) { - goterr |= clr_flag(ifr.ifr_name, IFF_POINTOPOINT); - spp++; - continue; - } - if (!strcmp(*spp, "pointopoint")) { - if (*(spp + 1) != NULL) { - spp++; - safe_strncpy(host, *spp, (sizeof host)); - if (INET_resolve(host, &sa)) { - goterr++; - spp++; + + if (ioctl(sockfd, a1op->selector, &ifr) < 0) { + perror(a1op->name); + ++goterr; continue; } - memcpy((char *) &ifr.ifr_dstaddr, (char *) &sa, - sizeof(struct sockaddr)); - if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) { - perror("SIOCSIFDSTADDR"); - goterr++; - } - } - goterr |= set_flag(ifr.ifr_name, IFF_POINTOPOINT); - spp++; - continue; - }; - if (!strcmp(*spp, "hw")) { - if (*++spp == NULL || strcmp("ether", *spp)) { - show_usage(); +#ifdef QUESTIONABLE_ALIAS_CASE + if (mask & A_COLON_CHK) { + /* + * Don't do the set_flag() if the address is an alias with + * a - at the end, since it's deleted already! - Roman + * + * Should really use regex.h here, not sure though how well + * it'll go with the cross-platform support etc. + */ + char *ptr; + short int found_colon = 0; + for (ptr = ifr.ifr_name; *ptr; ptr++ ) { + if (*ptr == ':') { + found_colon++; + } + } + + if (found_colon && *(ptr - 1) == '-') { + continue; + } + } +#endif } - - if (*++spp == NULL) { - /* silently ignore it if no address */ + if (!(mask & A_SET_AFTER)) { continue; } + mask = N_SET; + } - safe_strncpy(host, *spp, (sizeof host)); - if (in_ether(host, &sa2) < 0) { - fprintf(stderr, "invalid hw-addr %s\n", host); - goterr++; - spp++; - continue; + if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { + perror("SIOCGIFFLAGS"); + ++goterr; + } else { + selector = op->selector; + if (mask & SET_MASK) { + ifr.ifr_flags |= selector; + } else { + ifr.ifr_flags &= ~selector; } - memcpy((char *) &ifr.ifr_hwaddr, (char *) &sa2, - sizeof(struct sockaddr)); - if (ioctl(sockfd, SIOCSIFHWADDR, &ifr) < 0) { - perror("SIOCSIFHWADDR"); - goterr++; + if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { + perror("SIOCSIFFLAGS"); + ++goterr; } - spp++; - continue; } + LOOP: + } /* end of while-loop */ - /* If the next argument is a valid hostname, assume OK. */ - safe_strncpy(host, *spp, (sizeof host)); - - if (INET_resolve(host, &sa) < 0) { - show_usage(); - } - memcpy((char *) &ifr.ifr_addr, - (char *) &sa, sizeof(struct sockaddr)); + return goterr; +} - r = ioctl(sockfd, SIOCSIFADDR, &ifr); +#ifdef BB_FEATURE_IFCONFIG_HW +/* Input an Ethernet address and convert to binary. */ +static int +in_ether(char *bufp, struct sockaddr *sap) +{ + unsigned char *ptr; + int i, j; + unsigned char val; + unsigned char c; + + sap->sa_family = ARPHRD_ETHER; + ptr = sap->sa_data; + + for (i = 0 ; i < ETH_ALEN ; i++) { + val = 0; - if (r < 0) { - perror("SIOCSIFADDR"); - goterr++; + /* We might get a semicolon here - not required. */ + if (i && (*bufp == ':')) { + bufp++; } - /* - * Don't do the set_flag() if the address is an alias with a - at the - * end, since it's deleted already! - Roman - * - * Should really use regex.h here, not sure though how well it'll go - * with the cross-platform support etc. - */ - { - char *ptr; - short int found_colon = 0; - for (ptr = ifr.ifr_name; *ptr; ptr++ ) - if (*ptr == ':') found_colon++; - - if (!(found_colon && *(ptr - 1) == '-')) - goterr |= set_flag(ifr.ifr_name, (IFF_UP | IFF_RUNNING)); + for (j=0 ; j<2 ; j++) { + c = *bufp; + if (c >= '0' && c <= '9') { + c -= '0'; + } else if (c >= 'a' && c <= 'f') { + c -= ('a' + 10); + } else if (c >= 'A' && c <= 'F') { + c -= ('A' + 10); + } else if (j && (c == ':' || c == 0)) { + break; + } else { + return -1; + } + ++bufp; + val <<= 4; + val += c; } - - spp++; - - } /* end of while-loop */ + *ptr++ = val; + } - exit(0); + return (int) (*bufp); /* Error if we don't end at end of string. */ } - +#endif