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author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2006-06-19 03:20:32 +0900 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 15:18:02 -0700 |
commit | 1884f78c7a8b456c654338e3eb2874a99688ea10 (patch) | |
tree | 1e4bb6d6a4355790e6d8a3fa36b4be7045b6dad3 /net/netfilter | |
parent | 1aaec67f9335a17856dfacdd3e5cc6f4c18faeec (diff) | |
download | op-kernel-dev-1884f78c7a8b456c654338e3eb2874a99688ea10.zip op-kernel-dev-1884f78c7a8b456c654338e3eb2874a99688ea10.tar.gz |
[NETFILTER] NF_CONNTRACK_FTP: Use in6_pton() to convert address string.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/netfilter')
-rw-r--r-- | net/netfilter/nf_conntrack_ftp.c | 96 |
1 files changed, 4 insertions, 92 deletions
diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c index 960972d..9dccb40 100644 --- a/net/netfilter/nf_conntrack_ftp.c +++ b/net/netfilter/nf_conntrack_ftp.c @@ -111,101 +111,13 @@ static struct ftp_search { }, }; -/* This code is based on inet_pton() in glibc-2.2.4 */ static int get_ipv6_addr(const char *src, size_t dlen, struct in6_addr *dst, u_int8_t term) { - static const char xdigits[] = "0123456789abcdef"; - u_int8_t tmp[16], *tp, *endp, *colonp; - int ch, saw_xdigit; - u_int32_t val; - size_t clen = 0; - - tp = memset(tmp, '\0', sizeof(tmp)); - endp = tp + sizeof(tmp); - colonp = NULL; - - /* Leading :: requires some special handling. */ - if (*src == ':'){ - if (*++src != ':') { - DEBUGP("invalid \":\" at the head of addr\n"); - return 0; - } - clen++; - } - - saw_xdigit = 0; - val = 0; - while ((clen < dlen) && (*src != term)) { - const char *pch; - - ch = tolower(*src++); - clen++; - - pch = strchr(xdigits, ch); - if (pch != NULL) { - val <<= 4; - val |= (pch - xdigits); - if (val > 0xffff) - return 0; - - saw_xdigit = 1; - continue; - } - if (ch != ':') { - DEBUGP("get_ipv6_addr: invalid char. \'%c\'\n", ch); - return 0; - } - - if (!saw_xdigit) { - if (colonp) { - DEBUGP("invalid location of \"::\".\n"); - return 0; - } - colonp = tp; - continue; - } else if (*src == term) { - DEBUGP("trancated IPv6 addr\n"); - return 0; - } - - if (tp + 2 > endp) - return 0; - *tp++ = (u_int8_t) (val >> 8) & 0xff; - *tp++ = (u_int8_t) val & 0xff; - - saw_xdigit = 0; - val = 0; - continue; - } - if (saw_xdigit) { - if (tp + 2 > endp) - return 0; - *tp++ = (u_int8_t) (val >> 8) & 0xff; - *tp++ = (u_int8_t) val & 0xff; - } - if (colonp != NULL) { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const int n = tp - colonp; - int i; - - if (tp == endp) - return 0; - - for (i = 1; i <= n; i++) { - endp[- i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - if (tp != endp || (*src != term)) - return 0; - - memcpy(dst->s6_addr, tmp, sizeof(dst->s6_addr)); - return clen; + int ret = in6_pton(src, min_t(size_t, dlen, 0xffff), dst, term, &end); + if (ret > 0) + return (int)(end - src); + return 0; } static int try_number(const char *data, size_t dlen, u_int32_t array[], |