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Am 05.08.2010 13:47, schrieb Simon Horman:
> diff --git a/net/netfilter/nf_conntrack_sip.c
> b/net/netfilter/nf_conntrack_sip.c
> index 2fd1ea2..715ce54 100644
> --- a/net/netfilter/nf_conntrack_sip.c
> +++ b/net/netfilter/nf_conntrack_sip.c
> @@ -130,6 +130,44 @@ static int digits_len(const struct nf_conn *ct, const
> char *dptr,
> return len;
> }
>
> +static int iswordc(const char c)
> +{
> + if (isalnum(c) || c == '!' || c == '"' || c == '%' ||
> + (c >= '(' && c <= '/') || c == ':' || c == '<' || c == '>' ||
> + c == '?' || (c >= '[' && c <= ']') || c == '_' || c == '`' ||
> + c == '{' || c == '}' || c == '~')
> + return 1;
> + return 0;
> +}
> +
> +static int word_len(const char *dptr, const char *limit)
> +{
> + int len = 0;
> + while (dptr < limit && iswordc(*dptr)) {
> + dptr++;
> + len++;
> + }
> + return len;
> +}
Since the Call-ID can't contain whitespace, couldn't we simply
determine the length by looking for the next newline or whitespace
character?
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