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path: root/toys/pending/ifconfig.c
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Diffstat (limited to 'toys/pending/ifconfig.c')
-rw-r--r--toys/pending/ifconfig.c69
1 files changed, 32 insertions, 37 deletions
diff --git a/toys/pending/ifconfig.c b/toys/pending/ifconfig.c
index 5801a67d..55a56892 100644
--- a/toys/pending/ifconfig.c
+++ b/toys/pending/ifconfig.c
@@ -46,8 +46,6 @@ typedef struct sockaddr_with_len {
} sock_u;
} sockaddr_with_len;
-//for the param settings.
-
//for ipv6 add/del
struct ifreq_inet6 {
struct in6_addr ifrinte6_addr;
@@ -154,7 +152,7 @@ static void display_ifconfig(char *name, int always, unsigned long long val[])
{ARPHRD_SIT, "IPv6-in-IPv4"}, {-1, "UNSPEC"}
};
int i;
- char *p;
+ char *pp;
FILE *fp;
short flags;
@@ -181,8 +179,8 @@ static void display_ifconfig(char *name, int always, unsigned long long val[])
ifre.ifr_addr.sa_family = AF_INET;
memset(&ifre.ifr_addr, 0, sizeof(ifre.ifr_addr));
ioctl(TT.sockfd, SIOCGIFADDR, &ifre);
- p = (char *)&ifre.ifr_addr;
- for (i = 0; i<sizeof(ifre.ifr_addr); i++) if (p[i]) break;
+ 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;
@@ -212,42 +210,39 @@ static void display_ifconfig(char *name, int always, unsigned long long val[])
xputc('\n');
}
- fp = fopen("/proc/net/if_net6", "r");
+ fp = fopen(pp = "/proc/net/if_inet6", "r");
if (fp) {
- char iface_name[IFNAMSIZ] = {0,};
+ char iface_name[IFNAMSIZ];
int plen, iscope;
- while(fgets(toybuf, sizeof(toybuf), fp)) {
- int nitems = 0;
- char ipv6_addr[40] = {0,};
+ while (fgets(toybuf, sizeof(toybuf), fp)) {
+ int nitems;
+ char ipv6_addr[40];
+
nitems = sscanf(toybuf, "%32s %*08x %02x %02x %*02x %15s\n",
- ipv6_addr+7, &plen, &iscope, iface_name);
- if(nitems != 4) {
- if((nitems < 0) && feof(fp)) break;
- perror_exit("sscanf");
- }
- if(strcmp(name, iface_name) == 0) {
- int i = 0;
- struct sockaddr_in6 sock_in6;
- int len = sizeof(ipv6_addr) / (sizeof ipv6_addr[0]);
- char *ptr = ipv6_addr+7;
-
- while((i < len-2) && (*ptr)) {
- ipv6_addr[i++] = *ptr++;
- //put ':' after 4th bit
- if(!((i+1) % 5)) ipv6_addr[i++] = ':';
- }
- ipv6_addr[i+1] = '\0';
- if(inet_pton(AF_INET6, ipv6_addr, (struct sockaddr *) &sock_in6.sin6_addr) > 0) {
- sock_in6.sin6_family = AF_INET6;
- if(inet_ntop(AF_INET6, &sock_in6.sin6_addr, toybuf, BUFSIZ)) {
+ 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";
- int j;
- for (j=0; j < sizeof(scopes)/sizeof(*scopes); j++)
- if (iscope == (!!j)<<(j+3)) scope = scopes[j];
- xprintf("%10cinet6 addr: %s/%d Scope: %s\n", ' ', toybuf, plen, scope);
+ 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);
}
}
}
@@ -265,8 +260,8 @@ static void display_ifconfig(char *name, int always, unsigned long long val[])
"PORTSEL", "AUTOMEDIA", "DYNAMIC", NULL
};
- for(s = str; *s; s++) {
- if(flags & mask) xprintf("%s ", *s);
+ for (s = str; *s; s++) {
+ if (flags & mask) xprintf("%s ", *s);
mask = mask << 1;
}
} else xprintf("[NO FLAGS] ");
@@ -340,7 +335,7 @@ static void show_iface(char *iface_name)
if (iface_name) {
if (!strcmp(iface_name, name)) {
- display_ifconfig(name, 1, val);
+ display_ifconfig(iface_name, 1, val);
return;
}