void *ParseMpipeConfig(const char *iface)
{
ConfNode *if_root;
ConfNode *mpipe_node;
MpipeIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
char *copymodestr;
char *out_iface = NULL;
if (unlikely(aconf == NULL)) {
return NULL;
}
if (iface == NULL) {
SCFree(aconf);
return NULL;
}
strlcpy(aconf->iface, iface, sizeof(aconf->iface));
/* Find initial node */
mpipe_node = ConfGetNode("mpipe.inputs");
if (mpipe_node == NULL) {
SCLogInfo("Unable to find mpipe config using default value");
return aconf;
}
if_root = ConfNodeLookupKeyValue(mpipe_node, "interface", iface);
if (if_root == NULL) {
SCLogInfo("Unable to find mpipe config for "
"interface %s, using default value",
iface);
return aconf;
}
if (ConfGetChildValue(if_root, "copy-iface", &out_iface) == 1) {
if (strlen(out_iface) > 0) {
aconf->out_iface = out_iface;
}
}
aconf->copy_mode = MPIPE_COPY_MODE_NONE;
if (ConfGetChildValue(if_root, "copy-mode", ©modestr) == 1) {
if (aconf->out_iface == NULL) {
SCLogInfo("Copy mode activated but no destination"
" iface. Disabling feature");
} else if (strlen(copymodestr) <= 0) {
aconf->out_iface = NULL;
} else if (strcmp(copymodestr, "ips") == 0) {
SCLogInfo("MPIPE IPS mode activated %s->%s",
iface,
aconf->out_iface);
aconf->copy_mode = MPIPE_COPY_MODE_IPS;
} else if (strcmp(copymodestr, "tap") == 0) {
SCLogInfo("MPIPE TAP mode activated %s->%s",
iface,
aconf->out_iface);
aconf->copy_mode = MPIPE_COPY_MODE_TAP;
} else {
SCLogInfo("Invalid mode (no in tap, ips)");
}
}
return aconf;
}
void *ParsePcapConfig(const char *iface)
{
char *threadsstr = NULL;
ConfNode *if_root;
ConfNode *pcap_node;
PcapIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
char *tmpbpf;
char *tmpctype;
intmax_t value;
if (unlikely(aconf == NULL)) {
return NULL;
}
if (iface == NULL) {
SCFree(aconf);
return NULL;
}
memset(aconf, 0x00, sizeof(*aconf));
strlcpy(aconf->iface, iface, sizeof(aconf->iface));
aconf->buffer_size = 0;
/* If set command line option has precedence over config */
if ((ConfGetInt("pcap.buffer-size", &value)) == 1) {
SCLogInfo("Pcap will use %d buffer size", (int)value);
aconf->buffer_size = value;
}
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
aconf->bpf_filter = NULL;
if ((ConfGet("bpf-filter", &tmpbpf)) == 1) {
aconf->bpf_filter = tmpbpf;
}
SC_ATOMIC_INIT(aconf->ref);
aconf->DerefFunc = PcapDerefConfig;
aconf->threads = 1;
/* Find initial node */
pcap_node = ConfGetNode("pcap");
if (pcap_node == NULL) {
SCLogInfo("Unable to find pcap config using default value");
return aconf;
}
if_root = ConfNodeLookupKeyValue(pcap_node, "interface", iface);
if (if_root == NULL) {
SCLogInfo("Unable to find pcap config for "
"interface %s, using default value",
iface);
return aconf;
}
if (ConfGetChildValue(if_root, "threads", &threadsstr) != 1) {
aconf->threads = 1;
} else {
if (threadsstr != NULL) {
aconf->threads = (uint8_t)atoi(threadsstr);
}
}
if (aconf->threads == 0) {
aconf->threads = 1;
}
(void) SC_ATOMIC_ADD(aconf->ref, aconf->threads);
if (aconf->buffer_size == 0) {
const char *s_limit = ConfNodeLookupChildValue(if_root, "buffer-size");
if (s_limit != NULL) {
uint64_t bsize = 0;
if (ParseSizeStringU64(s_limit, &bsize) < 0) {
SCLogError(SC_ERR_INVALID_ARGUMENT,
"Failed to parse pcap buffer size: %s",
s_limit);
} else {
/* the string 2gb returns 2147483648 which is 1 to high
* for a int. */
if (bsize == (uint64_t)((uint64_t)INT_MAX + (uint64_t)1))
bsize = (uint64_t)INT_MAX;
if (bsize > INT_MAX) {
SCLogError(SC_ERR_INVALID_ARGUMENT,
"Failed to set pcap buffer size: 2gb max. %"PRIu64" > %d", bsize, INT_MAX);
} else {
aconf->buffer_size = (int)bsize;
}
}
}
}
if (aconf->bpf_filter == NULL) {
/* set bpf filter if we have one */
if (ConfGetChildValue(if_root, "bpf-filter", &tmpbpf) != 1) {
SCLogDebug("could not get bpf or none specified");
} else {
aconf->bpf_filter = tmpbpf;
}
} else {
SCLogInfo("BPF filter set from command line or via old 'bpf-filter' option.");
}
if (ConfGetChildValue(if_root, "checksum-checks", &tmpctype) == 1) {
if (strcmp(tmpctype, "auto") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
} else if (strcmp(tmpctype, "yes") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_ENABLE;
} else if (strcmp(tmpctype, "no") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_DISABLE;
} else {
SCLogError(SC_ERR_INVALID_ARGUMENT, "Invalid value for checksum-checks for %s", aconf->iface);
}
}
return aconf;
}
/**
* \brief extract information from config file
*
* The returned structure will be freed by the thread init function.
* This is thus necessary to or copy the structure before giving it
* to thread or to reparse the file for each thread (and thus have
* new structure.
*
* \return a AFPIfaceConfig corresponding to the interface name
*/
void *ParseAFPConfig(const char *iface)
{
char *threadsstr = NULL;
ConfNode *if_root;
ConfNode *af_packet_node;
AFPIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
char *tmpclusterid;
char *tmpctype;
intmax_t value;
int boolval;
char *bpf_filter = NULL;
if (aconf == NULL) {
return NULL;
}
if (iface == NULL) {
SCFree(aconf);
return NULL;
}
strlcpy(aconf->iface, iface, sizeof(aconf->iface));
aconf->threads = 1;
SC_ATOMIC_INIT(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, 1);
aconf->buffer_size = 0;
aconf->cluster_id = 1;
aconf->cluster_type = PACKET_FANOUT_HASH;
aconf->promisc = 1;
aconf->checksum_mode = CHECKSUM_VALIDATION_KERNEL;
aconf->DerefFunc = AFPDerefConfig;
aconf->flags = 0;
aconf->bpf_filter = NULL;
if (ConfGet("bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use command-line provided bpf filter '%s'",
aconf->bpf_filter);
}
}
/* Find initial node */
af_packet_node = ConfGetNode("af-packet");
if (af_packet_node == NULL) {
SCLogInfo("Unable to find af-packet config using default value");
return aconf;
}
if_root = ConfNodeLookupKeyValue(af_packet_node, "interface", iface);
if (if_root == NULL) {
SCLogInfo("Unable to find af-packet config for "
"interface %s, using default value",
iface);
return aconf;
}
if (ConfGetChildValue(if_root, "threads", &threadsstr) != 1) {
aconf->threads = 1;
} else {
if (threadsstr != NULL) {
aconf->threads = (uint8_t)atoi(threadsstr);
}
}
if (aconf->threads == 0) {
aconf->threads = 1;
}
SC_ATOMIC_RESET(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, aconf->threads);
if (ConfGetChildValue(if_root, "cluster-id", &tmpclusterid) != 1) {
SCLogError(SC_ERR_INVALID_ARGUMENT,"Could not get cluster-id from config");
} else {
aconf->cluster_id = (uint16_t)atoi(tmpclusterid);
SCLogDebug("Going to use cluster-id %" PRId32, aconf->cluster_id);
}
if (ConfGetChildValue(if_root, "cluster-type", &tmpctype) != 1) {
SCLogError(SC_ERR_GET_CLUSTER_TYPE_FAILED,"Could not get cluster-type from config");
} else if (strcmp(tmpctype, "cluster_round_robin") == 0) {
SCLogInfo("Using round-robin cluster mode for AF_PACKET (iface %s)",
aconf->iface);
aconf->cluster_type = PACKET_FANOUT_LB;
} else if (strcmp(tmpctype, "cluster_flow") == 0) {
/* In hash mode, we also ask for defragmentation needed to
* compute the hash */
uint16_t defrag = 0;
SCLogInfo("Using flow cluster mode for AF_PACKET (iface %s)",
aconf->iface);
ConfGetChildValueBool(if_root, "defrag", (int *)&defrag);
if (defrag) {
SCLogInfo("Using defrag kernel functionnality for AF_PACKET (iface %s)",
aconf->iface);
defrag = PACKET_FANOUT_FLAG_DEFRAG;
}
aconf->cluster_type = PACKET_FANOUT_HASH | defrag;
} else if (strcmp(tmpctype, "cluster_cpu") == 0) {
SCLogInfo("Using cpu cluster mode for AF_PACKET (iface %s)",
aconf->iface);
aconf->cluster_type = PACKET_FANOUT_CPU;
} else {
SCLogError(SC_ERR_INVALID_CLUSTER_TYPE,"invalid cluster-type %s",tmpctype);
SCFree(aconf);
return NULL;
}
/*load af_packet bpf filter*/
/* command line value has precedence */
if (ConfGet("bpf-filter", &bpf_filter) != 1) {
if (ConfGetChildValue(if_root, "bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use bpf filter %s", aconf->bpf_filter);
}
}
}
if ((ConfGetChildValueInt(if_root, "buffer-size", &value)) == 1) {
aconf->buffer_size = value;
} else {
aconf->buffer_size = 0;
}
(void)ConfGetChildValueBool(if_root, "disable-promisc", (int *)&boolval);
if (boolval) {
SCLogInfo("Disabling promiscuous mode on iface %s",
aconf->iface);
aconf->promisc = 0;
}
(void)ConfGetChildValueBool(if_root, "use-mmap", (int *)&boolval);
if (boolval) {
SCLogInfo("Enabling mmaped capture on iface %s",
aconf->iface);
aconf->flags |= AFP_RING_MODE;
}
if (ConfGetChildValue(if_root, "checksum-checks", &tmpctype) == 1) {
if (strcmp(tmpctype, "auto") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
} else if (strcmp(tmpctype, "yes") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_ENABLE;
} else if (strcmp(tmpctype, "no") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_DISABLE;
} else if (strcmp(tmpctype, "kernel") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_KERNEL;
} else {
SCLogError(SC_ERR_INVALID_ARGUMENT, "Invalid value for checksum-checks for %s", aconf->iface);
}
}
return aconf;
}
/**
* \brief extract information from config file
*
* The returned structure will be freed by the thread init function.
* This is thus necessary to or copy the structure before giving it
* to thread or to reparse the file for each thread (and thus have
* new structure.
*
* \return a AFPIfaceConfig corresponding to the interface name
*/
void *ParseAFPConfig(const char *iface)
{
char *threadsstr = NULL;
ConfNode *if_root;
ConfNode *af_packet_node;
AFPIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
char *tmpclusterid;
char *tmpctype;
char *copymodestr;
intmax_t value;
int boolval;
char *bpf_filter = NULL;
char *out_iface = NULL;
if (unlikely(aconf == NULL)) {
return NULL;
}
if (iface == NULL) {
SCFree(aconf);
return NULL;
}
strlcpy(aconf->iface, iface, sizeof(aconf->iface));
aconf->threads = 1;
SC_ATOMIC_INIT(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, 1);
aconf->buffer_size = 0;
aconf->cluster_id = 1;
aconf->cluster_type = PACKET_FANOUT_HASH;
aconf->promisc = 1;
aconf->checksum_mode = CHECKSUM_VALIDATION_KERNEL;
aconf->DerefFunc = AFPDerefConfig;
aconf->flags = 0;
aconf->bpf_filter = NULL;
aconf->out_iface = NULL;
if (ConfGet("bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use command-line provided bpf filter '%s'",
aconf->bpf_filter);
}
}
/* Find initial node */
af_packet_node = ConfGetNode("af-packet");
if (af_packet_node == NULL) {
SCLogInfo("Unable to find af-packet config using default value");
return aconf;
}
if_root = ConfNodeLookupKeyValue(af_packet_node, "interface", iface);
if (if_root == NULL) {
SCLogInfo("Unable to find af-packet config for "
"interface %s, using default value",
iface);
return aconf;
}
if (ConfGetChildValue(if_root, "threads", &threadsstr) != 1) {
aconf->threads = 1;
} else {
if (threadsstr != NULL) {
aconf->threads = (uint8_t)atoi(threadsstr);
}
}
if (aconf->threads == 0) {
aconf->threads = 1;
}
if (ConfGetChildValue(if_root, "copy-iface", &out_iface) == 1) {
if (strlen(out_iface) > 0) {
aconf->out_iface = out_iface;
}
}
(void)ConfGetChildValueBool(if_root, "use-mmap", (int *)&boolval);
if (boolval) {
SCLogInfo("Enabling mmaped capture on iface %s",
aconf->iface);
aconf->flags |= AFP_RING_MODE;
}
(void)ConfGetChildValueBool(if_root, "use-emergency-flush", (int *)&boolval);
if (boolval) {
SCLogInfo("Enabling ring emergency flush on iface %s",
aconf->iface);
aconf->flags |= AFP_EMERGENCY_MODE;
}
aconf->copy_mode = AFP_COPY_MODE_NONE;
if (ConfGetChildValue(if_root, "copy-mode", ©modestr) == 1) {
if (aconf->out_iface == NULL) {
SCLogInfo("Copy mode activated but no destination"
" iface. Disabling feature");
} else if (!(aconf->flags & AFP_RING_MODE)) {
SCLogInfo("Copy mode activated but use-mmap "
"set to no. Disabling feature");
} else if (strlen(copymodestr) <= 0) {
aconf->out_iface = NULL;
} else if (strcmp(copymodestr, "ips") == 0) {
SCLogInfo("AF_PACKET IPS mode activated %s->%s",
iface,
aconf->out_iface);
aconf->copy_mode = AFP_COPY_MODE_IPS;
} else if (strcmp(copymodestr, "tap") == 0) {
SCLogInfo("AF_PACKET TAP mode activated %s->%s",
iface,
aconf->out_iface);
aconf->copy_mode = AFP_COPY_MODE_TAP;
} else {
SCLogInfo("Invalid mode (not in tap, ips)");
}
}
SC_ATOMIC_RESET(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, aconf->threads);
if (ConfGetChildValue(if_root, "cluster-id", &tmpclusterid) != 1) {
SCLogError(SC_ERR_INVALID_ARGUMENT,"Could not get cluster-id from config");
} else {
aconf->cluster_id = (uint16_t)atoi(tmpclusterid);
SCLogDebug("Going to use cluster-id %" PRId32, aconf->cluster_id);
}
if (ConfGetChildValue(if_root, "cluster-type", &tmpctype) != 1) {
SCLogError(SC_ERR_GET_CLUSTER_TYPE_FAILED,"Could not get cluster-type from config");
} else if (strcmp(tmpctype, "cluster_round_robin") == 0) {
SCLogInfo("Using round-robin cluster mode for AF_PACKET (iface %s)",
aconf->iface);
aconf->cluster_type = PACKET_FANOUT_LB;
} else if (strcmp(tmpctype, "cluster_flow") == 0) {
/* In hash mode, we also ask for defragmentation needed to
* compute the hash */
uint16_t defrag = 0;
SCLogInfo("Using flow cluster mode for AF_PACKET (iface %s)",
aconf->iface);
ConfGetChildValueBool(if_root, "defrag", (int *)&defrag);
if (defrag) {
SCLogInfo("Using defrag kernel functionality for AF_PACKET (iface %s)",
aconf->iface);
defrag = PACKET_FANOUT_FLAG_DEFRAG;
}
aconf->cluster_type = PACKET_FANOUT_HASH | defrag;
} else if (strcmp(tmpctype, "cluster_cpu") == 0) {
SCLogInfo("Using cpu cluster mode for AF_PACKET (iface %s)",
aconf->iface);
aconf->cluster_type = PACKET_FANOUT_CPU;
} else {
SCLogError(SC_ERR_INVALID_CLUSTER_TYPE,"invalid cluster-type %s",tmpctype);
SCFree(aconf);
return NULL;
}
/*load af_packet bpf filter*/
/* command line value has precedence */
if (ConfGet("bpf-filter", &bpf_filter) != 1) {
if (ConfGetChildValue(if_root, "bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use bpf filter %s", aconf->bpf_filter);
}
}
}
if ((ConfGetChildValueInt(if_root, "buffer-size", &value)) == 1) {
aconf->buffer_size = value;
} else {
aconf->buffer_size = 0;
}
if ((ConfGetChildValueInt(if_root, "ring-size", &value)) == 1) {
aconf->ring_size = value;
if (value * aconf->threads < max_pending_packets) {
aconf->ring_size = max_pending_packets / aconf->threads + 1;
SCLogWarning(SC_ERR_AFP_CREATE, "Inefficient setup: ring-size < max_pending_packets. "
"Resetting to decent value %d.", aconf->ring_size);
/* We want at least that max_pending_packets packets can be handled by the
* interface. This is generous if we have multiple interfaces listening. */
}
} else {
/* We want that max_pending_packets packets can be handled by suricata
* for this interface. To take burst into account we multiply the obtained
* size by 2. */
aconf->ring_size = max_pending_packets * 2 / aconf->threads;
}
(void)ConfGetChildValueBool(if_root, "disable-promisc", (int *)&boolval);
if (boolval) {
SCLogInfo("Disabling promiscuous mode on iface %s",
aconf->iface);
aconf->promisc = 0;
}
if (ConfGetChildValue(if_root, "checksum-checks", &tmpctype) == 1) {
if (strcmp(tmpctype, "auto") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
} else if (strcmp(tmpctype, "yes") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_ENABLE;
} else if (strcmp(tmpctype, "no") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_DISABLE;
} else if (strcmp(tmpctype, "kernel") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_KERNEL;
} else {
SCLogError(SC_ERR_INVALID_ARGUMENT, "Invalid value for checksum-checks for %s", aconf->iface);
}
}
return aconf;
}
