int
olsrd_sanity_check_cnf(struct olsrd_config *cnf)
{
struct olsr_if *in = cnf->interfaces;
struct if_config_options *io;
/* Debug level */
if (cnf->debug_level < MIN_DEBUGLVL || cnf->debug_level > MAX_DEBUGLVL) {
fprintf(stderr, "Debuglevel %d is not allowed\n", cnf->debug_level);
return -1;
}
/* IP version */
if (cnf->ip_version != AF_INET && cnf->ip_version != AF_INET6) {
fprintf(stderr, "Ipversion %d not allowed!\n", cnf->ip_version);
return -1;
}
/* TOS */
if (cnf->tos > MAX_TOS) {
fprintf(stderr, "TOS %d is not allowed\n", cnf->tos);
return -1;
}
if (cnf->willingness_auto == false && (cnf->willingness > MAX_WILLINGNESS)) {
fprintf(stderr, "Willingness %d is not allowed\n", cnf->willingness);
return -1;
}
/* Hysteresis */
if (cnf->use_hysteresis == true) {
if (cnf->hysteresis_param.scaling < MIN_HYST_PARAM || cnf->hysteresis_param.scaling > MAX_HYST_PARAM) {
fprintf(stderr, "Hyst scaling %0.2f is not allowed\n", cnf->hysteresis_param.scaling);
return -1;
}
if (cnf->hysteresis_param.thr_high <= cnf->hysteresis_param.thr_low) {
fprintf(stderr, "Hyst upper(%0.2f) thr must be bigger than lower(%0.2f) threshold!\n", cnf->hysteresis_param.thr_high,
cnf->hysteresis_param.thr_low);
return -1;
}
if (cnf->hysteresis_param.thr_high < MIN_HYST_PARAM || cnf->hysteresis_param.thr_high > MAX_HYST_PARAM) {
fprintf(stderr, "Hyst upper thr %0.2f is not allowed\n", cnf->hysteresis_param.thr_high);
return -1;
}
if (cnf->hysteresis_param.thr_low < MIN_HYST_PARAM || cnf->hysteresis_param.thr_low > MAX_HYST_PARAM) {
fprintf(stderr, "Hyst lower thr %0.2f is not allowed\n", cnf->hysteresis_param.thr_low);
return -1;
}
}
/* Pollrate */
if (cnf->pollrate < MIN_POLLRATE || cnf->pollrate > MAX_POLLRATE) {
fprintf(stderr, "Pollrate %0.2f is not allowed\n", cnf->pollrate);
return -1;
}
/* NIC Changes Pollrate */
if (cnf->nic_chgs_pollrate < MIN_NICCHGPOLLRT || cnf->nic_chgs_pollrate > MAX_NICCHGPOLLRT) {
fprintf(stderr, "NIC Changes Pollrate %0.2f is not allowed\n", cnf->nic_chgs_pollrate);
return -1;
}
/* TC redundancy */
if (cnf->tc_redundancy != 2) {
fprintf(stderr, "Sorry, tc-redundancy 0/1 are not working on 0.5.6. "
"It was discovered late in the stable tree development and cannot "
"be solved without a difficult change in the dijkstra code. "
"Feel free to contact the olsr-user mailinglist "
"(http://www.olsr.org/?q=mailing-lists) to learn more "
"about the problem. The next version of OLSR will have working "
"tc-redundancy again.\n");
return -1;
}
/* MPR coverage */
if (cnf->mpr_coverage < MIN_MPR_COVERAGE || cnf->mpr_coverage > MAX_MPR_COVERAGE) {
fprintf(stderr, "MPR coverage %d is not allowed\n", cnf->mpr_coverage);
return -1;
}
/* Link Q and hysteresis cannot be activated at the same time */
if (cnf->use_hysteresis == true && cnf->lq_level) {
fprintf(stderr, "Hysteresis and LinkQuality cannot both be active! Deactivate one of them.\n");
return -1;
}
/* Link quality level */
if (cnf->lq_level != 0 && cnf->lq_level != 2) {
fprintf(stderr, "LQ level %d is not allowed\n", cnf->lq_level);
return -1;
}
/* Link quality window size */
if (cnf->lq_level && (cnf->lq_aging < MIN_LQ_AGING || cnf->lq_aging > MAX_LQ_AGING)) {
fprintf(stderr, "LQ aging factor %f is not allowed\n", cnf->lq_aging);
return -1;
}
/* NAT threshold value */
if (cnf->lq_level && (cnf->lq_nat_thresh < 0.1 || cnf->lq_nat_thresh > 1.0)) {
fprintf(stderr, "NAT threshold %f is not allowed\n", cnf->lq_nat_thresh);
return -1;
}
#if defined linux
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
if (cnf->ip_version == AF_INET6 && cnf->smart_gw_active) {
fprintf(stderr, "Smart gateways are not supported for linux kernel 2.4 and ipv6\n");
return -1;
}
#endif
/* this rtpolicy settings are also currently only used in Linux */
if (olsrd_sanity_check_rtpolicy(cnf)) {
return -1;
}
#endif
if (in == NULL) {
fprintf(stderr, "No interfaces configured!\n");
return -1;
}
if (cnf->min_tc_vtime < 0.0) {
fprintf(stderr, "Error, negative minimal tc time not allowed.\n");
return -1;
}
if (cnf->min_tc_vtime > 0.0) {
fprintf(stderr, "Warning, you are using the min_tc_vtime hack. We hope you know what you are doing... contact olsr.org otherwise.\n");
}
if (cnf->smart_gw_type >= GW_UPLINK_CNT) {
fprintf(stderr, "Error, illegal gateway uplink type: %d\n", cnf->smart_gw_type);
return -1;
}
if (cnf->smart_gw_downlink < MIN_SMARTGW_SPEED || cnf->smart_gw_downlink > MAX_SMARTGW_SPEED) {
fprintf(stderr, "Error, bad gateway downlink speed: %d kbit/s (should be %d-%d)\n",
cnf->smart_gw_downlink, MIN_SMARTGW_SPEED, MAX_SMARTGW_SPEED);
return -1;
}
if (cnf->smart_gw_uplink < MIN_SMARTGW_SPEED || cnf->smart_gw_uplink > MAX_SMARTGW_SPEED) {
fprintf(stderr, "Error, bad gateway uplink speed: %d kbit/s (should be %d-%d)\n",
cnf->smart_gw_uplink, MIN_SMARTGW_SPEED, MAX_SMARTGW_SPEED);
return -1;
}
if (cnf->interface_defaults == NULL) {
/* get a default configuration if the user did not specify one */
cnf->interface_defaults = get_default_if_config();
} else {
olsrd_print_interface_cnf(cnf->interface_defaults, cnf->interface_defaults, false);
olsrd_sanity_check_interface_cnf(cnf->interface_defaults, cnf, interface_defaults_name);
}
/* Interfaces */
while (in) {
struct olsr_lq_mult *mult, *mult_orig;
io = in->cnf;
olsrd_print_interface_cnf(in->cnf, in->cnfi, false);
/*apply defaults*/
{
size_t pos;
struct olsr_lq_mult *mult_temp, *mult_orig_walk;
uint8_t *cnfptr = (uint8_t*)in->cnf;
uint8_t *cnfiptr = (uint8_t*)in->cnfi;
uint8_t *defptr = (uint8_t*)cnf->interface_defaults;
/*save interface specific lqmults, as they are merged togehter later*/
mult_orig = io->lq_mult;
assert(in->cnf);
assert(in->cnfi);
for (pos = 0; pos < sizeof(*in->cnf); pos++) {
if (cnfptr[pos] != cnfiptr[pos]) {
cnfptr[pos] = defptr[pos];
cnfiptr[pos]=0x00;
}
else cnfiptr[pos]=0xFF;
}
io->lq_mult=NULL;
/*copy default lqmults into this interface*/
for (mult = cnf->interface_defaults->lq_mult; mult; mult=mult->next) {
/*search same lqmult in orig_list*/
for (mult_orig_walk = mult_orig; mult_orig_walk; mult_orig_walk=mult_orig_walk->next) {
if (ipequal(&mult_orig_walk->addr,&mult->addr)) {
break;
}
}
if (mult_orig_walk == NULL) {
mult_temp=malloc(sizeof(struct olsr_lq_mult));
memcpy(mult_temp,mult,sizeof(struct olsr_lq_mult));
mult_temp->next=io->lq_mult;
io->lq_mult=mult_temp;
}
}
}
if (in->name == NULL || !strlen(in->name)) {
fprintf(stderr, "Interface has no name!\n");
return -1;
}
if (io == NULL) {
fprintf(stderr, "Interface %s has no configuration!\n", in->name);
return -1;
}
/*merge lqmults*/
if (mult_orig!=NULL) {
io->orig_lq_mult_cnt=1;
/*search last of interface specific lqmults*/
mult = mult_orig;
while (mult->next!=NULL) {
mult=mult->next;
}
/*append default lqmults ath the end of the interface specific (to ensure they can overwrite them)*/
mult->next=io->lq_mult;
io->lq_mult=mult_orig;
}
if (olsrd_sanity_check_interface_cnf(io, cnf, in->name)) return -1;
in = in->next;
}
return 0;
}
int
olsrd_sanity_check_cnf(struct olsrd_config *cnf)
{
struct olsr_if *in = cnf->interfaces;
struct if_config_options *io;
/* Debug level */
if (cnf->debug_level < MIN_DEBUGLVL || cnf->debug_level > MAX_DEBUGLVL) {
fprintf(stderr, "Debuglevel %d is not allowed\n", cnf->debug_level);
return -1;
}
/* IP version */
if (cnf->ip_version != AF_INET && cnf->ip_version != AF_INET6) {
fprintf(stderr, "Ipversion %d not allowed!\n", cnf->ip_version);
return -1;
}
/* TOS range */
if (cnf->tos > MAX_TOS) {
fprintf(stderr, "TOS %d is not allowed\n", cnf->tos);
return -1;
}
/* TOS ECN */
if (cnf->tos & 0x03) {
fprintf(stderr, "TOS %d has set ECN bits, not allowed\n", cnf->tos);
return -1;
}
if (cnf->willingness_auto == false && (cnf->willingness > MAX_WILLINGNESS)) {
fprintf(stderr, "Willingness %d is not allowed\n", cnf->willingness);
return -1;
}
/* Hysteresis */
if (cnf->use_hysteresis == true) {
if (cnf->hysteresis_param.scaling < (float)MIN_HYST_PARAM || cnf->hysteresis_param.scaling > (float)MAX_HYST_PARAM) {
fprintf(stderr, "Hyst scaling %0.2f is not allowed\n", (double)cnf->hysteresis_param.scaling);
return -1;
}
if (cnf->hysteresis_param.thr_high <= cnf->hysteresis_param.thr_low) {
fprintf(stderr, "Hyst upper(%0.2f) thr must be bigger than lower(%0.2f) threshold!\n", (double)cnf->hysteresis_param.thr_high,
(double)cnf->hysteresis_param.thr_low);
return -1;
}
if (cnf->hysteresis_param.thr_high < (float)MIN_HYST_PARAM || cnf->hysteresis_param.thr_high > (float)MAX_HYST_PARAM) {
fprintf(stderr, "Hyst upper thr %0.2f is not allowed\n", (double)cnf->hysteresis_param.thr_high);
return -1;
}
if (cnf->hysteresis_param.thr_low < (float)MIN_HYST_PARAM || cnf->hysteresis_param.thr_low > (float)MAX_HYST_PARAM) {
fprintf(stderr, "Hyst lower thr %0.2f is not allowed\n", (double)cnf->hysteresis_param.thr_low);
return -1;
}
}
/* Pollrate */
if (cnf->pollrate < (float)MIN_POLLRATE || cnf->pollrate > (float)MAX_POLLRATE) {
fprintf(stderr, "Pollrate %0.2f is not allowed\n", (double)cnf->pollrate);
return -1;
}
/* NIC Changes Pollrate */
if (cnf->nic_chgs_pollrate < (float)MIN_NICCHGPOLLRT || cnf->nic_chgs_pollrate > (float)MAX_NICCHGPOLLRT) {
fprintf(stderr, "NIC Changes Pollrate %0.2f is not allowed\n", (double)cnf->nic_chgs_pollrate);
return -1;
}
/* TC redundancy */
if (cnf->tc_redundancy != 2) {
fprintf(stderr, "Sorry, tc-redundancy 0/1 are not working on 0.5.6. "
"It was discovered late in the stable tree development and cannot "
"be solved without a difficult change in the dijkstra code. "
"Feel free to contact the olsr-user mailinglist "
"(http://www.olsr.org/?q=mailing-lists) to learn more "
"about the problem. The next version of OLSR will have working "
"tc-redundancy again.\n");
return -1;
}
/* MPR coverage */
if (cnf->mpr_coverage < MIN_MPR_COVERAGE || cnf->mpr_coverage > MAX_MPR_COVERAGE) {
fprintf(stderr, "MPR coverage %d is not allowed\n", cnf->mpr_coverage);
return -1;
}
/* Link Q and hysteresis cannot be activated at the same time */
if (cnf->use_hysteresis == true && cnf->lq_level) {
fprintf(stderr, "Hysteresis and LinkQuality cannot both be active! Deactivate one of them.\n");
return -1;
}
/* Link quality level */
if (cnf->lq_level != 0 && cnf->lq_level != 2) {
fprintf(stderr, "LQ level %d is not allowed\n", cnf->lq_level);
return -1;
}
/* Link quality window size */
if (cnf->lq_level && (cnf->lq_aging < (float)MIN_LQ_AGING || cnf->lq_aging > (float)MAX_LQ_AGING)) {
fprintf(stderr, "LQ aging factor %f is not allowed\n", (double)cnf->lq_aging);
return -1;
}
/* NAT threshold value */
if (cnf->lq_level && (cnf->lq_nat_thresh < 0.1f || cnf->lq_nat_thresh > 1.0f)) {
fprintf(stderr, "NAT threshold %f is not allowed\n", (double)cnf->lq_nat_thresh);
return -1;
}
#ifdef __linux__
#if !defined LINUX_VERSION_CODE || !defined KERNEL_VERSION
#error "Both LINUX_VERSION_CODE and KERNEL_VERSION need to be defined"
#else /* !defined LINUX_VERSION_CODE || !defined KERNEL_VERSION */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
if (cnf->ip_version == AF_INET6 && cnf->smart_gw_active) {
fprintf(stderr, "Smart gateways are not supported for linux kernel < 2.6.24 and ipv6\n");
return -1;
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24) */
#endif /* !defined LINUX_VERSION_CODE || !defined KERNEL_VERSION */
/* this rtpolicy settings are also currently only used in Linux */
if (olsrd_sanity_check_rtpolicy(cnf)) {
return -1;
}
#endif /* __linux__ */
if (in == NULL) {
fprintf(stderr, "No interfaces configured!\n");
return -1;
}
if (cnf->min_tc_vtime < 0.0f) {
fprintf(stderr, "Error, negative minimal tc time not allowed.\n");
return -1;
}
if (cnf->min_tc_vtime > 0.0f) {
fprintf(stderr, "Warning, you are using the min_tc_vtime hack. We hope you know what you are doing... contact olsr.org otherwise.\n");
}
#ifdef __linux__
if ((cnf->smart_gw_use_count < MIN_SMARTGW_USE_COUNT_MIN) || (cnf->smart_gw_use_count > MAX_SMARTGW_USE_COUNT_MAX)) {
fprintf(stderr, "Error, bad gateway use count %d, outside of range [%d, %d]\n",
cnf->smart_gw_use_count, MIN_SMARTGW_USE_COUNT_MIN, MAX_SMARTGW_USE_COUNT_MAX);
return -1;
}
if (cnf->smart_gw_use_count > 1) {
struct sgw_egress_if * sgwegressif = cnf->smart_gw_egress_interfaces;
if (!cnf->smart_gw_policyrouting_script) {
fprintf(stderr, "Error, no policy routing script configured in multi-gateway mode\n");
return -1;
}
{
struct stat statbuf;
int r = stat(cnf->smart_gw_policyrouting_script, &statbuf);
if (r) {
fprintf(stderr, "Error, policy routing script not found: %s\n", strerror(errno));
return -1;
}
if (!S_ISREG(statbuf.st_mode)) {
fprintf(stderr, "Error, policy routing script not a regular file\n");
return -1;
}
if (statbuf.st_uid) {
fprintf(stderr, "Error, policy routing script must be owned by root\n");
return -1;
}
if (!(statbuf.st_mode & (S_IRUSR | S_IXUSR))) {
fprintf(stderr, "Error, policy routing script is not executable\n");
return -1;
}
}
/* egress interface(s) must be set */
if (!sgwegressif) {
fprintf(stderr, "Error, no egress interfaces configured in multi-gateway mode\n");
return -1;
}
/* an egress interface must not be an OLSR interface */
while (sgwegressif) {
struct olsr_if * olsrif = cnf->interfaces;
while (olsrif) {
if (!strcmp(olsrif->name, sgwegressif->name)) {
fprintf(stderr, "Error, egress interface %s already is an OLSR interface\n", sgwegressif->name);
return -1;
}
olsrif = olsrif->next;
}
cnf->smart_gw_egress_interfaces_count++;
sgwegressif = sgwegressif->next;
}
if (cnf->smart_gw_egress_interfaces_count > MAX_SMARTGW_EGRESS_INTERFACE_COUNT_MAX) {
fprintf(stderr, "Error, egress interface count %u not in range [1, %u]\n",
cnf->smart_gw_egress_interfaces_count, MAX_SMARTGW_EGRESS_INTERFACE_COUNT_MAX);
return -1;
}
{
uint8_t egressLow = cnf->smart_gw_mark_offset_egress;
uint8_t egressHigh = egressLow + cnf->smart_gw_egress_interfaces_count - 1;
uint8_t tunnelsLow = cnf->smart_gw_mark_offset_tunnels;
uint8_t tunnelsHigh = tunnelsLow + cnf->smart_gw_use_count - 1;
bool overlap = false;
/* check that the egress interface marks range does not overflow */
if (egressLow > (UINT8_MAX - cnf->smart_gw_egress_interfaces_count)) {
fprintf(stderr, "Error, egress interface mark offset %u together with egress interface count %u overflows range [0, %u]\n",
egressLow, cnf->smart_gw_egress_interfaces_count, UINT8_MAX);
return -1;
}
/* check that the tunnel interface marks range does not overflow */
if (tunnelsLow > (UINT8_MAX - cnf->smart_gw_use_count)) {
fprintf(stderr, "Error, tunnel interface mark offset %u together with use count %u overflows range [0, %u]\n",
tunnelsLow, cnf->smart_gw_use_count, UINT8_MAX);
return -1;
}
/* check that the egress and tunnel marks ranges do not overlap */
overlap = ((tunnelsLow <= egressLow) && (egressLow <= tunnelsHigh));
overlap = overlap || ((tunnelsLow <= egressHigh) && (egressHigh <= tunnelsHigh));
overlap = overlap || ((egressLow <= tunnelsLow) && (tunnelsLow <= egressHigh));
overlap = overlap || ((egressLow <= tunnelsHigh) && (tunnelsHigh <= egressHigh));
if (overlap) {
fprintf(stderr, "Error, egress interface mark range [%u, %u] overlaps with tunnel interface mark range [%u, %u]\n",
egressLow, egressHigh, tunnelsLow, tunnelsHigh);
return -1;
}
}
}
if (cnf->smart_gw_period < MIN_SMARTGW_PERIOD || cnf->smart_gw_period > MAX_SMARTGW_PERIOD) {
fprintf(stderr, "Error, bad gateway period: %d msec (should be %d-%d)\n",
cnf->smart_gw_period, MIN_SMARTGW_PERIOD, MAX_SMARTGW_PERIOD);
return -1;
}
if (cnf->smart_gw_stablecount < MIN_SMARTGW_STABLE || cnf->smart_gw_stablecount > MAX_SMARTGW_STABLE) {
fprintf(stderr, "Error, bad gateway stable count: %d (should be %d-%d)\n",
cnf->smart_gw_stablecount, MIN_SMARTGW_STABLE, MAX_SMARTGW_STABLE);
return -1;
}
if (((cnf->smart_gw_thresh < MIN_SMARTGW_THRES) || (cnf->smart_gw_thresh > MAX_SMARTGW_THRES)) && (cnf->smart_gw_thresh != 0)) {
fprintf(stderr, "Smart gateway threshold %d is not allowed (should be %d-%d)\n", cnf->smart_gw_thresh,
MIN_SMARTGW_THRES, MAX_SMARTGW_THRES);
return -1;
}
/* no checks are needed on:
* - cnf->smart_gw_weight_exitlink_up
* - cnf->smart_gw_weight_exitlink_down
* - cnf->smart_gw_weight_etx
* - cnf->smart_gw_divider_etx
*/
if (cnf->smart_gw_type >= GW_UPLINK_CNT) {
fprintf(stderr, "Error, illegal gateway uplink type: %d\n", cnf->smart_gw_type);
return -1;
}
if (cnf->smart_gw_downlink < MIN_SMARTGW_SPEED || cnf->smart_gw_downlink > MAX_SMARTGW_SPEED) {
fprintf(stderr, "Error, bad gateway downlink speed: %d kbit/s (should be %d-%d)\n",
cnf->smart_gw_downlink, MIN_SMARTGW_SPEED, MAX_SMARTGW_SPEED);
return -1;
}
if (cnf->smart_gw_uplink < MIN_SMARTGW_SPEED || cnf->smart_gw_uplink > MAX_SMARTGW_SPEED) {
fprintf(stderr, "Error, bad gateway uplink speed: %d kbit/s (should be %d-%d)\n",
cnf->smart_gw_uplink, MIN_SMARTGW_SPEED, MAX_SMARTGW_SPEED);
return -1;
}
#endif /* __linux__ */
if (cnf->interface_defaults == NULL) {
/* get a default configuration if the user did not specify one */
cnf->interface_defaults = get_default_if_config();
} else {
olsrd_print_interface_cnf(cnf->interface_defaults, cnf->interface_defaults, false);
olsrd_sanity_check_interface_cnf(cnf->interface_defaults, cnf, interface_defaults_name);
}
/* Interfaces */
while (in) {
struct olsr_lq_mult *mult, *mult_orig;
assert(in->cnf);
assert(in->cnfi);
io = in->cnf;
olsrd_print_interface_cnf(in->cnf, in->cnfi, false);
/*apply defaults*/
{
size_t pos;
struct olsr_lq_mult *mult_temp, *mult_orig_walk;
uint8_t *cnfptr = (uint8_t*)in->cnf;
uint8_t *cnfiptr = (uint8_t*)in->cnfi;
uint8_t *defptr = (uint8_t*)cnf->interface_defaults;
/*save interface specific lqmults, as they are merged togehter later*/
mult_orig = io->lq_mult;
for (pos = 0; pos < sizeof(*in->cnf); pos++) {
if (cnfptr[pos] != cnfiptr[pos]) {
cnfptr[pos] = defptr[pos]; cnfiptr[pos]=0x00;
}
else cnfiptr[pos]=0xFF;
}
io->lq_mult=NULL;
/*copy default lqmults into this interface*/
for (mult = cnf->interface_defaults->lq_mult; mult; mult=mult->next) {
/*search same lqmult in orig_list*/
for (mult_orig_walk = mult_orig; mult_orig_walk; mult_orig_walk=mult_orig_walk->next) {
if (ipequal(&mult_orig_walk->addr,&mult->addr)) {
break;
}
}
if (mult_orig_walk == NULL) {
mult_temp=malloc(sizeof(struct olsr_lq_mult));
memcpy(mult_temp,mult,sizeof(struct olsr_lq_mult));
mult_temp->next=io->lq_mult;
io->lq_mult=mult_temp;
}
}
}
if (in->name == NULL || !strlen(in->name)) {
fprintf(stderr, "Interface has no name!\n");
return -1;
}
if (io == NULL) {
fprintf(stderr, "Interface %s has no configuration!\n", in->name);
return -1;
}
/*merge lqmults*/
if (mult_orig!=NULL) {
io->orig_lq_mult_cnt=1;
/*search last of interface specific lqmults*/
mult = mult_orig;
while (mult->next!=NULL) {
mult=mult->next;
}
/*append default lqmults ath the end of the interface specific (to ensure they can overwrite them)*/
mult->next=io->lq_mult;
io->lq_mult=mult_orig;
}
if (olsrd_sanity_check_interface_cnf(io, cnf, in->name)) return -1;
in = in->next;
}
return 0;
}