/*
* function name: parse_group_prefix
* input: char *s
* output: int
* operation: parse group_prefix configured information.
* General form: 'group_prefix <group-addr> [masklen <masklen>]'.
*/
int parse_group_prefix(char *s)
{
char *w;
u_int32 group_addr;
u_int32 masklen;
w = next_word(&s);
if (EQUAL(w, "")) {
logit(LOG_WARNING, 0,
"Configuration error for 'group_prefix' in %s: no group_addr. Ignoring...", configfilename);
return FALSE;
}
group_addr = inet_parse(w, 4);
if (!IN_MULTICAST(ntohl(group_addr))) {
logit(LOG_WARNING, 0,
"Config error for 'group_prefix' in %s: %s is not a mcast addr. Ignoring...", configfilename, inet_fmt(group_addr, s1, sizeof(s1)));
return FALSE;
}
/* Was if (!(~(*cand_rp_adv_message.prefix_cnt_ptr))) which Arm GCC 4.4.2 dislikes:
* --> "config.c:693: warning: promoted ~unsigned is always non-zero"
* The prefix_cnt_ptr is a u_int8 so it seems this check was to prevent overruns.
* I've changed the check to see if we've already read 255 entries, if so the cnt
* is maximized and we need to tell the user. --Joachim Nilsson 2010-01-16 */
if (*cand_rp_adv_message.prefix_cnt_ptr == 255) {
logit(LOG_WARNING, 0,
"Too many group_prefix configured. Truncating...");
return FALSE;
}
if (EQUAL((w = next_word(&s)), "masklen")) {
w = next_word(&s);
if (sscanf(w, "%u", &masklen) == 1) {
if (masklen > (sizeof(group_addr)*8))
masklen = (sizeof(group_addr)*8);
else if (masklen < 4)
masklen = 4;
}
else
masklen = PIM_GROUP_PREFIX_DEFAULT_MASKLEN;
}
else
masklen = PIM_GROUP_PREFIX_DEFAULT_MASKLEN;
PUT_EGADDR(group_addr, (u_int8)masklen, 0,
cand_rp_adv_message.insert_data_ptr);
(*cand_rp_adv_message.prefix_cnt_ptr)++;
logit(LOG_INFO, 0, "Adding prefix %s/%d", inet_fmt(group_addr, s1, sizeof(s1)), masklen);
return TRUE;
}
/**
* parse_group_prefix - Parse group_prefix configured information.
* @s: String token
* Syntax:
* group_prefix <group-addr>[/<masklen>]
* <group-addr> [masklen <masklen>]
*
* Returns:
* %TRUE if the parsing was successful, o.w. %FALSE
*/
int parse_group_prefix(char *s)
{
char *w;
uint32_t group_addr;
uint32_t masklen = PIM_GROUP_PREFIX_DEFAULT_MASKLEN;
w = next_word(&s);
if (EQUAL(w, "")) {
WARN("Missing group_prefix address");
return FALSE;
}
parse_prefix_len (w, &masklen);
group_addr = inet_parse(w, 4);
if (!IN_MULTICAST(ntohl(group_addr))) {
WARN("Group address '%s' is not a valid multicast address", inet_fmt(group_addr, s1, sizeof(s1)));
return FALSE;
}
/* Was if (!(~(*cand_rp_adv_message.prefix_cnt_ptr))) which Arm GCC 4.4.2 dislikes:
* --> "config.c:693: warning: promoted ~unsigned is always non-zero"
* The prefix_cnt_ptr is a u_int8 so it seems this check was to prevent overruns.
* I've changed the check to see if we've already read 255 entries, if so the cnt
* is maximized and we need to tell the user. --Joachim Nilsson 2010-01-16 */
if (*cand_rp_adv_message.prefix_cnt_ptr == 255) {
WARN("Too many multicast groups configured!");
return FALSE;
}
if (EQUAL((w = next_word(&s)), "masklen")) {
w = next_word(&s);
if (!sscanf(w, "%u", &masklen))
masklen = PIM_GROUP_PREFIX_DEFAULT_MASKLEN;
}
validate_prefix_len(&masklen);
PUT_EGADDR(group_addr, (u_int8)masklen, 0, cand_rp_adv_message.insert_data_ptr);
(*cand_rp_adv_message.prefix_cnt_ptr)++;
logit(LOG_INFO, 0, "Adding Cand-RP group prefix %s/%d", inet_fmt(group_addr, s1, sizeof(s1)), masklen);
return TRUE;
}
