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Diffstat (limited to 'networking')
-rw-r--r--networking/ifconfig.c162
1 files changed, 58 insertions, 104 deletions
diff --git a/networking/ifconfig.c b/networking/ifconfig.c
index 05be7dc1f..d28ca22c5 100644
--- a/networking/ifconfig.c
+++ b/networking/ifconfig.c
@@ -279,7 +279,6 @@ int ifconfig_main(int argc, char **argv)
const struct arg1opt *a1op;
const struct options *op;
int sockfd; /* socket fd we use to manipulate stuff with */
- int goterr;
int selector;
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
unsigned int mask;
@@ -293,7 +292,6 @@ int ifconfig_main(int argc, char **argv)
/*char host[128];*/
const char *host = NULL; /* make gcc happy */
- goterr = 0;
did_flags = 0;
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
sai_hostname = 0;
@@ -305,7 +303,7 @@ int ifconfig_main(int argc, char **argv)
--argc;
#if ENABLE_FEATURE_IFCONFIG_STATUS
- if ((argc > 0) && (((*argv)[0] == '-') && ((*argv)[1] == 'a') && !(*argv)[2])) {
+ if (argc > 0 && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) {
interface_opt_a = 1;
--argc;
++argv;
@@ -337,13 +335,11 @@ int ifconfig_main(int argc, char **argv)
for (op = OptArray; op->name; op++) { /* Find table entry. */
if (strcmp(p, op->name) == 0) { /* If name matches... */
mask &= op->flags;
- if (mask) { /* set the mask and go. */
+ if (mask) /* set the mask and go. */
goto FOUND_ARG;
- }
/* If we get here, there was a valid arg with an */
/* invalid '-' prefix. */
- ++goterr;
- goto LOOP;
+ bb_error_msg_and_die("bad: '%s'", p-1);
}
}
@@ -356,16 +352,13 @@ int ifconfig_main(int argc, char **argv)
if (mask & ARG_MASK) {
mask = op->arg_flags;
a1op = Arg1Opt + (op - OptArray);
- if (mask & A_NETMASK & did_flags) {
+ if (mask & A_NETMASK & did_flags)
bb_show_usage();
- }
if (*++argv == NULL) {
- if (mask & A_ARG_REQ) {
+ if (mask & A_ARG_REQ)
bb_show_usage();
- } else {
- --argv;
- mask &= A_SET_AFTER; /* just for broadcast */
- }
+ --argv;
+ mask &= A_SET_AFTER; /* just for broadcast */
} else { /* got an arg so process it */
HOSTNAME:
did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
@@ -382,121 +375,95 @@ int ifconfig_main(int argc, char **argv)
#if ENABLE_FEATURE_IPV6
prefix = strchr(host, '/');
if (prefix) {
- if (safe_strtoi(prefix + 1, &prefix_len) ||
- (prefix_len < 0) || (prefix_len > 128))
- {
- ++goterr;
- goto LOOP;
- }
- *prefix = 0;
+ prefix_len = xatou_range(prefix + 1, 0, 128);
+ *prefix = '\0';
}
#endif
-
sai.sin_family = AF_INET;
sai.sin_port = 0;
if (!strcmp(host, bb_str_default)) {
/* Default is special, meaning 0.0.0.0. */
sai.sin_addr.s_addr = INADDR_ANY;
+ }
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
- } else if (((host[0] == '+') && !host[1]) && (mask & A_BROADCAST) &&
- (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)) {
+ else if ((host[0] == '+' && !host[1]) && (mask & A_BROADCAST)
+ && (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)
+ ) {
/* + is special, meaning broadcast is derived. */
sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask);
+ }
#endif
#if ENABLE_FEATURE_IPV6
- } else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
+ else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
int sockfd6;
struct in6_ifreq ifr6;
memcpy((char *) &ifr6.ifr6_addr,
- (char *) &sai6.sin6_addr,
- sizeof(struct in6_addr));
+ (char *) &sai6.sin6_addr,
+ sizeof(struct in6_addr));
/* Create a channel to the NET kernel. */
- if ((sockfd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- bb_perror_msg_and_die("socket6");
- }
- if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) {
- perror("SIOGIFINDEX");
- ++goterr;
- continue;
- }
+ sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0);
+ if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0)
+ bb_perror_msg_and_die("SIOGIFINDEX");
ifr6.ifr6_ifindex = ifr.ifr_ifindex;
ifr6.ifr6_prefixlen = prefix_len;
- if (ioctl(sockfd6, a1op->selector, &ifr6) < 0) {
- perror(a1op->name);
- ++goterr;
- }
+ if (ioctl(sockfd6, a1op->selector, &ifr6) < 0)
+ bb_perror_msg_and_die(a1op->name);
continue;
+ }
#endif
- } else if (inet_aton(host, &sai.sin_addr) == 0) {
+ else if (inet_aton(host, &sai.sin_addr) == 0) {
/* It's not a dotted quad. */
- struct hostent *hp = gethostbyname(host);
- if (!hp) {
- ++goterr;
- continue;
- }
+ struct hostent *hp = xgethostbyname(host);
memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0],
sizeof(struct in_addr));
}
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
- if (mask & A_HOSTNAME) {
+ if (mask & A_HOSTNAME)
sai_hostname = sai.sin_addr.s_addr;
- }
- if (mask & A_NETMASK) {
+ if (mask & A_NETMASK)
sai_netmask = sai.sin_addr.s_addr;
- }
#endif
p = (char *) &sai;
#if ENABLE_FEATURE_IFCONFIG_HW
} else { /* A_CAST_HOST_COPY_IN_ETHER */
/* This is the "hw" arg case. */
- if (strcmp("ether", *argv) || (*++argv == NULL)) {
+ if (strcmp("ether", *argv) || !*++argv)
bb_show_usage();
- }
/*safe_strncpy(host, *argv, sizeof(host));*/
host = *argv;
- if (in_ether(host, &sa)) {
- bb_error_msg("invalid hw-addr %s", host);
- ++goterr;
- continue;
- }
+ if (in_ether(host, &sa))
+ bb_error_msg_and_die("invalid hw-addr %s", host);
p = (char *) &sa;
}
#endif
memcpy( (((char *)&ifr) + a1op->ifr_offset),
p, sizeof(struct sockaddr));
} else {
+ /* FIXME: error check?? */
unsigned long i = strtoul(*argv, NULL, 0);
-
p = ((char *)&ifr) + a1op->ifr_offset;
#if ENABLE_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) {
+ if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0)
+ bb_perror_msg_and_die("SIOCGIFMAP");
+ if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR)
*((unsigned char *) p) = i;
- } else if (mask & A_MAP_USHORT) {
+ else if (mask & A_MAP_USHORT)
*((unsigned short *) p) = i;
- } else {
+ else
*((unsigned long *) p) = i;
- }
} else
#endif
- if (mask & A_CAST_CHAR_PTR) {
+ if (mask & A_CAST_CHAR_PTR)
*((caddr_t *) p) = (caddr_t) i;
- } else { /* A_CAST_INT */
+ else /* A_CAST_INT */
*((int *) p) = i;
- }
}
- if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
- perror(a1op->name);
- ++goterr;
- continue;
- }
+ if (ioctl(sockfd, a1op->selector, &ifr) < 0)
+ bb_perror_msg_and_die(a1op->name);
#ifdef QUESTIONABLE_ALIAS_CASE
if (mask & A_COLON_CHK) {
/*
@@ -508,46 +475,33 @@ int ifconfig_main(int argc, char **argv)
*/
char *ptr;
short int found_colon = 0;
-
- for (ptr = ifr.ifr_name; *ptr; ptr++) {
- if (*ptr == ':') {
+ for (ptr = ifr.ifr_name; *ptr; ptr++)
+ if (*ptr == ':')
found_colon++;
- }
- }
-
- if (found_colon && *(ptr - 1) == '-') {
+ if (found_colon && ptr[-1] == '-')
continue;
- }
}
#endif
}
- if (!(mask & A_SET_AFTER)) {
+ if (!(mask & A_SET_AFTER))
continue;
- }
mask = N_SET;
}
- 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;
- }
- if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
- perror("SIOCSIFFLAGS");
- ++goterr;
- }
- }
- LOOP:
- continue;
- } /* end of while-loop */
-
- if (ENABLE_FEATURE_CLEAN_UP) close(sockfd);
- return goterr;
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0)
+ bb_perror_msg_and_die("SIOCGIFFLAGS");
+ selector = op->selector;
+ if (mask & SET_MASK)
+ ifr.ifr_flags |= selector;
+ else
+ ifr.ifr_flags &= ~selector;
+ if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0)
+ bb_perror_msg_and_die("SIOCSIFFLAGS");
+ } /* while() */
+
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close(sockfd);
+ return 0;
}
#if ENABLE_FEATURE_IFCONFIG_HW
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 16:05:13 +0000