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authorRich Felker <dalias@aerifal.cx>2011-04-25 17:04:40 -0400
committerRich Felker <dalias@aerifal.cx>2011-04-25 17:04:40 -0400
commit34d81974d341e0174d1fc690b4d3e3b9b1767586 (patch)
treed1590bf1043fd2a29462f16dad9133f86fbf2baa /src/network/inet_pton.c
parent5efc6af4ebb9d50eb978d0338835544fdfea0396 (diff)
downloadmusl-34d81974d341e0174d1fc690b4d3e3b9b1767586.tar.gz
ipv6 parsing code (formerly dummied-out)
Diffstat (limited to 'src/network/inet_pton.c')
-rw-r--r--src/network/inet_pton.c62
1 files changed, 56 insertions, 6 deletions
diff --git a/src/network/inet_pton.c b/src/network/inet_pton.c
index b7f4834f..5affb08d 100644
--- a/src/network/inet_pton.c
+++ b/src/network/inet_pton.c
@@ -4,14 +4,23 @@
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
-#include "__dns.h"
+#include <string.h>
+
+static int hexval(unsigned c)
+{
+ if (c-'0'<10) return c-'0';
+ c |= 32;
+ if (c-'a'<6) return c-'a'+10;
+ return -1;
+}
int inet_pton(int af, const char *s, void *a0)
{
+ uint16_t ip[8];
unsigned char *a = a0;
const char *z;
unsigned long x;
- int i;
+ int i, j, v, d, brk=-1, need_v4=0;
/* Reimplement this because inet_pton cannot accept special v4 forms */
if (af==AF_INET) {
@@ -22,10 +31,51 @@ int inet_pton(int af, const char *s, void *a0)
s=z+1;
}
return 1;
- } else if (af==AF_INET6) {
- return !__ipparse(a, AF_INET6, s);
+ } else if (af!=AF_INET6) {
+ errno = EAFNOSUPPORT;
+ return -1;
}
- errno = EAFNOSUPPORT;
- return -1;
+ if (s[0]==':' && s[1]==':') {
+ s+=2;
+ brk=0;
+ }
+
+ for (i=0; ; i++, s+=j+1) {
+ if (s[0]==':' && brk<0) {
+ brk=i;
+ j=0;
+ ip[i]=0;
+ if (!s[1]) break;
+ continue;
+ }
+ if (hexval(s[0])<0) return -1;
+ while (s[0]=='0' && s[1]=='0') s++;
+ for (v=j=0; j<5 && (d=hexval(s[j]))>=0; j++)
+ v=16*v+d;
+ if (v > 65535) return -1;
+ ip[i] = v;
+ if (!s[j]) {
+ if (brk<0 && i!=7) return -1;
+ break;
+ }
+ if (i<7) {
+ if (s[j]==':') continue;
+ if (s[j]!='.') return -1;
+ need_v4=1;
+ i++;
+ break;
+ }
+ return -1;
+ }
+ if (brk>=0) {
+ memmove(ip+brk+7-i, ip+brk, 2*(i+1-brk));
+ for (j=0; j<7-i; j++) ip[brk+j] = 0;
+ }
+ for (j=0; j<8; j++) {
+ *a++ = ip[j]>>8;
+ *a++ = ip[j];
+ }
+ if (need_v4 &&inet_pton(AF_INET, (void *)s, a-4) <= 0) return -1;
+ return 1;
}