diff options
| author | Jan Engelhardt <jengelh@medozas.de> | 2011-05-07 12:56:39 +0200 |
|---|---|---|
| committer | Jan Engelhardt <jengelh@medozas.de> | 2011-05-09 00:52:18 +0200 |
| commit | 170cf49a630fd0d237818b537c01794dde00b07a (patch) | |
| tree | d58add04cfebb184de35c75ad0ab22b5dba10f08 /xtoptions.c | |
| parent | 0f77e2e40a498688f3d8f8a65bf74ce13db893b2 (diff) | |
libxtables: XTTYPE_PROTOCOL support
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'xtoptions.c')
| -rw-r--r-- | xtoptions.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/xtoptions.c b/xtoptions.c index 413de1b8..70370edb 100644 --- a/xtoptions.c +++ b/xtoptions.c @@ -493,6 +493,29 @@ static int xtables_getportbyname(const char *name) } /** + * Validate and parse a protocol specification (number or name) by use of + * /etc/protocols and put the result into @cb->val.protocol. + */ +static void xtopt_parse_protocol(struct xt_option_call *cb) +{ + const struct protoent *entry; + unsigned int value = -1; + + if (xtables_strtoui(cb->arg, NULL, &value, 0, UINT8_MAX)) { + cb->val.protocol = value; + return; + } + entry = getprotobyname(cb->arg); + if (entry == NULL) + xt_params->exit_err(PARAMETER_PROBLEM, + "Protocol \"%s\" does not resolve to anything.\n", + cb->arg); + cb->val.protocol = entry->p_proto; + if (cb->entry->flags & XTOPT_PUT) + *(uint8_t *)XTOPT_MKPTR(cb) = cb->val.protocol; +} + +/** * Validate and parse a port specification and put the result into * @cb->val.port. */ @@ -665,6 +688,7 @@ static void (*const xtopt_subparse[])(struct xt_option_call *) = { [XTTYPE_SYSLOGLEVEL] = xtopt_parse_sysloglevel, [XTTYPE_HOST] = xtopt_parse_host, [XTTYPE_HOSTMASK] = xtopt_parse_hostmask, + [XTTYPE_PROTOCOL] = xtopt_parse_protocol, [XTTYPE_PORT] = xtopt_parse_port, [XTTYPE_PORT_NE] = xtopt_parse_port, [XTTYPE_PORTRC] = xtopt_parse_mport, @@ -691,6 +715,7 @@ static const size_t xtopt_psize[] = { [XTTYPE_SYSLOGLEVEL] = sizeof(uint8_t), [XTTYPE_HOST] = sizeof(union nf_inet_addr), [XTTYPE_HOSTMASK] = sizeof(union nf_inet_addr), + [XTTYPE_PROTOCOL] = sizeof(uint8_t), [XTTYPE_PORT] = sizeof(uint16_t), [XTTYPE_PORT_NE] = sizeof(uint16_t), [XTTYPE_PORTRC] = sizeof(uint16_t[2]), |