void config_vifs_from_file(void)
{
FILE *f;
char linebuf[LINE_BUFSIZ];
char *w, *s;
struct ifconf ifc;
int option;
char ifbuf[BUFSIZ];
u_int8 *data_ptr;
int error_flag;
int line_num;
error_flag = FALSE;
line_num = 0;
if ((f = fopen(configfilename, "r")) == NULL) {
if (errno != ENOENT) logit(LOG_WARNING, errno, "can't open %s",
configfilename);
return;
}
/* TODO: HARDCODING!!! */
cand_rp_adv_message.buffer =
(u_int8 *)malloc(4 + sizeof(pim_encod_uni_addr_t)
+ 255*sizeof(pim_encod_grp_addr_t));
cand_rp_adv_message.prefix_cnt_ptr = cand_rp_adv_message.buffer;
/* By default, if no group_prefix configured, then prefix_cnt == 0
* implies group_prefix = 224.0.0.0 and masklen = 4.
*/
*cand_rp_adv_message.prefix_cnt_ptr = 0;
cand_rp_adv_message.insert_data_ptr = cand_rp_adv_message.buffer;
/* TODO: XXX: HARDCODING!!! */
cand_rp_adv_message.insert_data_ptr += (4 + 6);
ifc.ifc_buf = ifbuf;
ifc.ifc_len = sizeof(ifbuf);
if (ioctl(udp_socket, SIOCGIFCONF, (char *)&ifc) < 0)
logit(LOG_ERR, errno, "ioctl SIOCGIFCONF");
while (fgets(linebuf, sizeof(linebuf), f) != NULL) {
if (strlen(linebuf) >= (LINE_BUFSIZ - 1)) {
logit(LOG_WARNING, 0,
"line length must be shorter than %d in %s:%d",
LINE_BUFSIZ, configfilename, line_num);
error_flag = TRUE;
} else {
line_num++;
}
s = linebuf;
w = next_word(&s);
option = wordToOption(w);
switch(option) {
case EMPTY:
continue;
break;
case PHYINT:
parse_phyint(s);
break;
case CANDIDATE_RP:
parse_candidateRP(s);
break;
case RP_ADDRESS:
parse_rp_address(s);
break;
case GROUP_PREFIX:
parse_group_prefix(s);
break;
case BOOTSTRAP_RP:
parseBSR(s);
break;
case REG_THRESHOLD:
parse_reg_threshold(s);
break;
case DATA_THRESHOLD:
parse_data_threshold(s);
break;
case DEFAULT_SOURCE_METRIC:
parse_default_source_metric(s);
break;
case DEFAULT_SOURCE_PREFERENCE:
parse_default_source_preference(s);
break;
default:
logit(LOG_WARNING, 0, "unknown command '%s' in %s:%d",
w, configfilename, line_num);
error_flag = TRUE;
}
}
if (error_flag) {
/*
* XXX: let's be pedantic even about warnings. If this is a problem,
* comment out this logit(LOG_ERR).
*/
logit(LOG_ERR, 0, "Syntax Error in %s", configfilename);
}
cand_rp_adv_message.message_size = cand_rp_adv_message.insert_data_ptr
- cand_rp_adv_message.buffer;
if (cand_rp_flag != FALSE) {
/* Prepare the RP info */
my_cand_rp_holdtime = 2.5 * my_cand_rp_adv_period;
/* TODO: HARDCODING! */
data_ptr = cand_rp_adv_message.buffer + 1;
PUT_BYTE(my_cand_rp_priority, data_ptr);
PUT_HOSTSHORT(my_cand_rp_holdtime, data_ptr);
PUT_EUADDR(my_cand_rp_address, data_ptr);
}
fclose(f);
}
void config_vifs_from_file(void)
{
FILE *f;
char linebuf[LINE_BUFSIZ];
char *w, *s;
struct ifconf ifc;
int option;
char ifbuf[BUFSIZ];
u_int8 *data_ptr;
int error_flag;
error_flag = FALSE;
lineno = 0;
if ((f = fopen(config_file, "r")) == NULL) {
if (errno != ENOENT)
logit(LOG_WARNING, errno, "Cannot open %s", config_file);
return;
}
/* TODO: HARDCODING!!! */
cand_rp_adv_message.buffer = calloc(1, 4 + sizeof(pim_encod_uni_addr_t) +
255 * sizeof(pim_encod_grp_addr_t));
if (!cand_rp_adv_message.buffer)
logit(LOG_ERR, errno, "Ran out of memory in config_vifs_from_file()");
cand_rp_adv_message.prefix_cnt_ptr = cand_rp_adv_message.buffer;
/* By default, if no group_prefix configured, then prefix_cnt == 0
* implies group_prefix = 224.0.0.0 and masklen = 4.
*/
*cand_rp_adv_message.prefix_cnt_ptr = 0;
cand_rp_adv_message.insert_data_ptr = cand_rp_adv_message.buffer;
/* TODO: XXX: HARDCODING!!! */
cand_rp_adv_message.insert_data_ptr += (4 + 6);
ifc.ifc_buf = ifbuf;
ifc.ifc_len = sizeof(ifbuf);
if (ioctl(udp_socket, SIOCGIFCONF, (char *)&ifc) < 0)
logit(LOG_ERR, errno, "Failed querying kernel network interfaces");
while (fgets(linebuf, sizeof(linebuf), f) != NULL) {
if (strlen(linebuf) >= (LINE_BUFSIZ - 1)) {
WARN("Line length must be shorter than %d", LINE_BUFSIZ);
error_flag = TRUE;
}
lineno++;
s = linebuf;
w = next_word(&s);
option = parse_option(w);
switch (option) {
case CONF_EMPTY:
continue;
break;
case CONF_PHYINT:
parse_phyint(s);
break;
case CONF_CANDIDATE_RP:
parse_candidateRP(s);
break;
case CONF_RP_ADDRESS:
parse_rp_address(s);
break;
case CONF_GROUP_PREFIX:
parse_group_prefix(s);
break;
case CONF_BOOTSTRAP_RP:
parseBSR(s);
break;
case CONF_REG_THRESHOLD:
parse_reg_threshold(s);
break;
case CONF_DATA_THRESHOLD:
parse_data_threshold(s);
break;
case CONF_DEFAULT_SOURCE_METRIC:
parse_default_source_metric(s);
break;
case CONF_DEFAULT_SOURCE_PREFERENCE:
parse_default_source_preference(s);
break;
default:
logit(LOG_WARNING, 0, "%s:%u - Unknown command '%s'", config_file, lineno, w);
error_flag = TRUE;
}
}
if (error_flag)
logit(LOG_ERR, 0, "%s:%u - Syntax error", config_file, lineno);
cand_rp_adv_message.message_size = cand_rp_adv_message.insert_data_ptr - cand_rp_adv_message.buffer;
if (cand_rp_flag != FALSE) {
/* Prepare the RP info */
my_cand_rp_holdtime = 2.5 * my_cand_rp_adv_period;
/* TODO: HARDCODING! */
data_ptr = cand_rp_adv_message.buffer + 1;
PUT_BYTE(my_cand_rp_priority, data_ptr);
PUT_HOSTSHORT(my_cand_rp_holdtime, data_ptr);
PUT_EUADDR(my_cand_rp_address, data_ptr);
}
fclose(f);
}
