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fix parseip()

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addresses like: "1:2:3:4:5:6:7:255.255.255.255" caused parseip
to write beyond the ip buffer.
This commit is contained in:
cinap_lenrek 2013-04-02 03:39:24 +02:00
parent e8c1d0fe7c
commit 4c2d520eef
1 changed files with 4 additions and 0 deletions
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4
sys/src/libip/parseip.c
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@ -74,6 +74,10 @@ parseip(uchar *to, char *from)
op = p;
x = strtoul(p, &p, 16);
if(*p == '.' || (*p == 0 && i == 0)){ /* ends with v4? */
if(i > IPaddrlen-4){
memset(to, 0, IPaddrlen);
return -1; /* parse error */
}
p = v4parseip(to+i, op);
i += 4;
break;