#define abs(a) ((0 < (a)) ? (a) : -(a))
#endif
-/* inline the various RPL definitions */
-#define ND_RPL_MESSAGE 0x9B
+#include "rpl.h"
static const struct tok icmp6_type_values[] = {
{ ICMP6_DST_UNREACH, "destination unreachable"},
IPPROTO_ICMPV6));
}
-enum ND_RPL_CODE {
- ND_RPL_DIS =0x00,
- ND_RPL_DIO =0x01,
- ND_RPL_DAO =0x02,
- ND_RPL_DAO_ACK=0x03,
- ND_RPL_SDIS =0x80,
- ND_RPL_SDIO =0x81,
- ND_RPL_SDAO =0x82,
- ND_RPL_SDAO_ACK=0x83,
- ND_RPL_SCC =0x8A,
-};
-
-enum ND_RPL_DIO_FLAGS {
- ND_RPL_DIO_GROUNDED = 0x80,
- ND_RPL_DIO_DATRIG = 0x40,
- ND_RPL_DIO_DASUPPORT= 0x20,
- ND_RPL_DIO_RES4 = 0x10,
- ND_RPL_DIO_RES3 = 0x08,
- ND_RPL_DIO_PRF_MASK = 0x07, /* 3-bit preference */
-};
-
-enum ND_RPL_SUBOPT {
- RPL_OPT_PAD0 = 0,
- RPL_OPT_PADN = 1,
- RPL_DIO_METRICS = 2,
- RPL_DIO_ROUTINGINFO = 3,
- RPL_DIO_CONFIG = 4,
- RPL_DAO_RPLTARGET = 5,
- RPL_DAO_TRANSITINFO = 6,
- RPL_DIO_DESTPREFIX = 8,
- RPL_DAO_RPLTARGET_DESC=9,
-};
-
-#define RPL_DIO_GROUND_FLAG 0x80
-#define RPL_DIO_MOP_SHIFT 3
-#define RPL_DIO_MOP_MASK (7 << RPL_DIO_MOP_SHIFT)
-#define RPL_DIO_PRF_SHIFT 0
-#define RPL_DIO_PRF_MASK (7 << RPL_DIO_PRF_SHIFT)
-#define RPL_DIO_GROUNDED(X) ((X)&RPL_DIO_GROUND_FLAG)
-#define RPL_DIO_MOP(X) (((X)&RPL_DIO_MOP_MASK) >> RPL_DIO_MOP_SHIFT)
-#define RPL_DIO_PRF(X) (((X)&RPL_DIO_PRF_MASK) >> RPL_DIO_PRF_SHIFT)
-
-
-struct nd_rpl_dio {
- u_int8_t rpl_instanceid;
- u_int8_t rpl_version;
- u_int16_t rpl_dagrank;
- u_int8_t rpl_mopprf; /* bit 7=G, 5-3=MOP, 2-0=PRF */
- u_int8_t rpl_dtsn;
- u_int8_t rpl_flags; /* Dest. Advertisement Trigger Seq Number */
- u_int8_t rpl_resv1;
- u_int8_t rpl_dagid[16];
-};
-struct nd_rpl_option {
- u_int8_t rpl_dio_type;
- u_int8_t rpl_dio_len; /* suboption length, not including type/len */
- u_int8_t rpl_dio_data[0];
-};
-
-enum RPL_DIO_MOP {
- RPL_DIO_NONSTORING= 0x0,
- RPL_DIO_STORING = 0x1,
- RPL_DIO_NONSTORING_MULTICAST = 0x2,
- RPL_DIO_STORING_MULTICAST = 0x3,
-};
-
const struct tok rpl_mop_values[] = {
{ RPL_DIO_NONSTORING, "nonstoring"},
{ RPL_DIO_STORING, "storing"},
};
static void
-rpl_dio_print(netdissect_options *ndo,
- const struct icmp6_hdr *hdr _U_,
- const u_char *bp, u_int length)
+rpl_format_dagid(char dagid_str[65], u_char *dagid)
{
- struct nd_rpl_dio *dio = (struct nd_rpl_dio *)bp;
- char dagid[65];
- char *d = dagid;
+ char *d = dagid_str;
int i;
- ND_TCHECK(dio->rpl_dagid);
for(i=0;i<16;i++) {
- if(isprint(dio->rpl_dagid[i])) {
- *d++ = dio->rpl_dagid[i];
+ if(isprint(dagid[i])) {
+ *d++ = dagid[i];
} else {
- int cnt=snprintf(d,4,"0x%02x",
- dio->rpl_dagid[i]);
+ int cnt=snprintf(d,4,"0x%02x", dagid[i]);
d += cnt;
}
}
*d++ = '\0';
+}
+
+static void
+rpl_dio_printopt(netdissect_options *ndo,
+ struct rpl_dio_genoption *opt,
+ u_int length)
+{
+ length -= sizeof(struct rpl_dio_genoption);
+ ND_TCHECK(opt->rpl_dio_len);
+
+ while((opt->rpl_dio_type == RPL_OPT_PAD0 &&
+ (u_char *)opt < ndo->ndo_snapend) ||
+ ND_TTEST2(*opt,(opt->rpl_dio_len+2))) {
+
+ unsigned int optlen = opt->rpl_dio_len+2;
+ if(opt->rpl_dio_type == RPL_OPT_PAD0) {
+ optlen = 1;
+ ND_PRINT((ndo, " opt:pad0"));
+ } else {
+ ND_PRINT((ndo, " opt:%s len:%u ",
+ tok2str(rpl_subopt_values, "%subopt:%u", opt->rpl_dio_type),
+ optlen));
+ if(ndo->ndo_vflag > 2) {
+ unsigned int paylen = opt->rpl_dio_len;
+ if(paylen > length) paylen = length;
+ hex_print(ndo,
+ " ",
+ opt->rpl_dio_data, /* content of DIO option */
+ paylen);
+ }
+ }
+ opt = (struct rpl_dio_genoption *)(((char *)opt) + optlen);
+ length -= optlen;
+ }
+ return;
+trunc:
+ ND_PRINT((ndo," [|truncated]"));
+ return;
+}
+
+static void
+rpl_dio_print(netdissect_options *ndo,
+ const struct icmp6_hdr *hdr _U_,
+ const u_char *bp, u_int length)
+{
+ struct nd_rpl_dio *dio = (struct nd_rpl_dio *)bp;
+ char dagid_str[65];
+
+ ND_TCHECK(*dio);
+ rpl_format_dagid(dagid_str, dio->rpl_dagid);
+
ND_PRINT((ndo, " [dagid:%s,seq:%u,instance:%u,rank:%u,%smop:%s,prf:%u]",
- dagid,
+ dagid_str,
dio->rpl_dtsn,
dio->rpl_instanceid,
dio->rpl_dagrank,
RPL_DIO_PRF(dio->rpl_mopprf)));
if(ndo->ndo_vflag > 1) {
- struct nd_rpl_option *opt = (struct nd_rpl_option *)&dio[1];
- length -= sizeof(struct nd_rpl_dio);
- ND_TCHECK(opt->rpl_dio_len);
- while((opt->rpl_dio_type == RPL_OPT_PAD0 &&
- (u_char *)opt < ndo->ndo_snapend) ||
- ND_TTEST2(*opt,(opt->rpl_dio_len+2))) {
- unsigned int optlen = opt->rpl_dio_len+2;
- if(opt->rpl_dio_type == RPL_OPT_PAD0) {
- optlen = 1;
- ND_PRINT((ndo, " opt:pad0"));
- } else {
- ND_PRINT((ndo, " opt:%s len:%u ",
- tok2str(rpl_subopt_values, "%subopt:%u", opt->rpl_dio_type),
- optlen));
- if(ndo->ndo_vflag > 2) {
- unsigned int paylen = opt->rpl_dio_len;
- if(paylen > length) paylen = length;
- hex_print(ndo,
- " ",
- (u_char *)&opt[1], /* content of DIO option */
- paylen);
- }
- }
- opt = (struct nd_rpl_option *)(((char *)opt) + optlen);
- length -= optlen;
- }
+ struct rpl_dio_genoption *opt = (struct rpl_dio_genoption *)&dio[1];
+ rpl_dio_printopt(ndo, opt, length);
+ }
+ return;
+trunc:
+ ND_PRINT((ndo," [|truncated]"));
+ return;
+}
+
+static void
+rpl_dao_print(netdissect_options *ndo,
+ const struct icmp6_hdr *hdr _U_,
+ const u_char *bp, u_int length)
+{
+ struct nd_rpl_dao *dao = (struct nd_rpl_dao *)bp;
+ u_char *dao_end = (u_char *)&dao[1];
+ char dagid_str[65];
+
+ ND_TCHECK(*dao);
+
+ strcpy(dagid_str,"<elided>");
+ if(RPL_DAO_D(dao->rpl_flags)) {
+ ND_TTEST2(dao->rpl_dagid, 16);
+ rpl_format_dagid(dagid_str, dao->rpl_dagid);
+ dao_end += DAGID_LEN;
+ }
+
+ ND_PRINT((ndo, " [dagid:%s,seq:%u,instance:%u]",
+ dagid_str,
+ dao->rpl_daoseq,
+ dao->rpl_instanceid));
+
+ if(ndo->ndo_vflag > 1) {
+ struct rpl_dio_genoption *opt = (struct rpl_dio_genoption *)dao_end;
+ rpl_dio_printopt(ndo, opt, length);
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo," [|truncated]"));
+ return;
+}
+
+static void
+rpl_daoack_print(netdissect_options *ndo,
+ const struct icmp6_hdr *hdr _U_,
+ const u_char *bp, u_int length)
+{
+ struct nd_rpl_daoack *daoack = (struct nd_rpl_daoack *)bp;
+ u_char *daoack_end = (u_char *)&daoack[1];
+ char dagid_str[65];
+
+ ND_TCHECK(*daoack);
+
+ strcpy(dagid_str,"<elided>");
+ if(RPL_DAOACK_D(daoack->rpl_flags)) {
+ ND_TTEST2(daoack->rpl_dagid, 16);
+ rpl_format_dagid(dagid_str, daoack->rpl_dagid);
+ daoack_end += DAGID_LEN;
+ }
+
+ ND_PRINT((ndo, " [dagid:%s,seq:%u,instance:%u,status:%u]",
+ dagid_str,
+ daoack->rpl_daoseq,
+ daoack->rpl_instanceid,
+ daoack->rpl_status));
+
+ /* no officially defined options for DAOACK, but print anyway, we find*/
+ if(ndo->ndo_vflag > 1) {
+ struct rpl_dio_genoption *opt = (struct rpl_dio_genoption *)daoack_end;
+ rpl_dio_printopt(ndo, opt, length);
}
return;
+
trunc:
ND_PRINT((ndo," [|truncated]"));
return;
int basecode= hdr->icmp6_code & 0x7f;
if(secured) {
- ND_PRINT((ndo, ", (SEC)"));
+ ND_PRINT((ndo, ", (SEC) [worktodo]"));
+ /* XXX
+ * the next header pointer needs to move forward to
+ * skip the secure part.
+ */
+ return;
} else {
ND_PRINT((ndo, ", (CLR)"));
}
switch(basecode) {
- case ND_RPL_DIS:
+ case ND_RPL_DAG_IS:
ND_PRINT((ndo, "DODAG Information Solicitation"));
if(ndo->ndo_vflag) {
}
break;
- case ND_RPL_DIO:
+ case ND_RPL_DAG_IO:
ND_PRINT((ndo, "DODAG Information Object"));
if(ndo->ndo_vflag) {
rpl_dio_print(ndo, hdr, bp, length);
case ND_RPL_DAO:
ND_PRINT((ndo, "Destination Advertisement Object"));
if(ndo->ndo_vflag) {
+ rpl_dao_print(ndo, hdr, bp, length);
}
break;
case ND_RPL_DAO_ACK:
ND_PRINT((ndo, "Destination Advertisement Object Ack"));
if(ndo->ndo_vflag) {
+ rpl_daoack_print(ndo, hdr, bp, length);
}
break;
default:
--- /dev/null
+#ifndef _RPL_H_
+
+/*
+ * NOTE: the contents of this file are an interpretation of RFC6550.
+ * no copyright is asserted on this file, as it transcribes
+ * a public specification.
+ *
+ */
+
+#define PACKED __attribute__((packed))
+
+/*
+ * DIO: Updated to RFC6550, as published in 2012: section 6. (page 30)
+ */
+
+#define ND_RPL_MESSAGE 155 /* 0x9B */
+
+enum ND_RPL_CODE {
+ ND_RPL_DAG_IS=0x00,
+ ND_RPL_DAG_IO=0x01,
+ ND_RPL_DAO =0x02,
+ ND_RPL_DAO_ACK=0x03,
+ ND_RPL_SEC_DAG_IS = 0x80,
+ ND_RPL_SEC_DAG_IO = 0x81,
+ ND_RPL_SEC_DAG = 0x82,
+ ND_RPL_SEC_DAG_ACK= 0x83,
+ ND_RPL_SEC_CONSIST= 0x84,
+};
+
+enum ND_RPL_DIO_FLAGS {
+ ND_RPL_DIO_GROUNDED = 0x80,
+ ND_RPL_DIO_DATRIG = 0x40,
+ ND_RPL_DIO_DASUPPORT= 0x20,
+ ND_RPL_DIO_RES4 = 0x10,
+ ND_RPL_DIO_RES3 = 0x08,
+ ND_RPL_DIO_PRF_MASK = 0x07, /* 3-bit preference */
+};
+
+#define DAGID_LEN 16
+
+/* section 6 of draft-ietf-roll-rpl-19 */
+struct nd_rpl_security {
+ u_int8_t rpl_sec_t_reserved; /* bit 7 is T-bit */
+ u_int8_t rpl_sec_algo;
+ u_int16_t rpl_sec_kim_lvl_flags; /* bit 15/14, KIM */
+ /* bit 10-8, LVL, bit 7-0 flags */
+ u_int32_t rpl_sec_counter;
+ u_int8_t rpl_sec_ki[0]; /* depends upon kim */
+} PACKED;
+
+/* section 6.2.1, DODAG Information Solication (DIS_IS) */
+struct nd_rpl_dis_is {
+ u_int8_t rpl_dis_flags;
+ u_int8_t rpl_dis_reserved;
+ u_int8_t rpl_dis_options[0];
+} PACKED;
+
+/* section 6.3.1, DODAG Information Object (DIO) */
+struct nd_rpl_dio {
+ u_int8_t rpl_instanceid;
+ u_int8_t rpl_version;
+ u_int16_t rpl_dagrank;
+ u_int8_t rpl_mopprf; /* bit 7=G, 5-3=MOP, 2-0=PRF */
+ u_int8_t rpl_dtsn; /* Dest. Advertisement Trigger Sequence Number */
+ u_int8_t rpl_flags; /* no flags defined yet */
+ u_int8_t rpl_resv1;
+ u_int8_t rpl_dagid[DAGID_LEN];
+} PACKED;
+#define RPL_DIO_GROUND_FLAG 0x80
+#define RPL_DIO_MOP_SHIFT 3
+#define RPL_DIO_MOP_MASK (7 << RPL_DIO_MOP_SHIFT)
+#define RPL_DIO_PRF_SHIFT 0
+#define RPL_DIO_PRF_MASK (7 << RPL_DIO_PRF_SHIFT)
+#define RPL_DIO_GROUNDED(X) ((X)&RPL_DIO_GROUND_FLAG)
+#define RPL_DIO_MOP(X) (enum RPL_DIO_MOP)(((X)&RPL_DIO_MOP_MASK) >> RPL_DIO_MOP_SHIFT)
+#define RPL_DIO_PRF(X) (((X)&RPL_DIO_PRF_MASK) >> RPL_DIO_PRF_SHIFT)
+
+enum RPL_DIO_MOP {
+ RPL_DIO_NONSTORING= 0x0,
+ RPL_DIO_STORING = 0x1,
+ RPL_DIO_NONSTORING_MULTICAST = 0x2,
+ RPL_DIO_STORING_MULTICAST = 0x3,
+};
+
+enum RPL_SUBOPT {
+ RPL_OPT_PAD0 = 0,
+ RPL_OPT_PADN = 1,
+ RPL_DIO_METRICS = 2,
+ RPL_DIO_ROUTINGINFO = 3,
+ RPL_DIO_CONFIG = 4,
+ RPL_DAO_RPLTARGET = 5,
+ RPL_DAO_TRANSITINFO = 6,
+ RPL_DIO_DESTPREFIX = 8,
+ RPL_DAO_RPLTARGET_DESC=9,
+};
+
+struct rpl_dio_genoption {
+ u_int8_t rpl_dio_type;
+ u_int8_t rpl_dio_len; /* suboption length, not including type/len */
+ u_int8_t rpl_dio_data[0];
+} PACKED;
+
+#define RPL_DIO_LIFETIME_INFINITE 0xffffffff
+#define RPL_DIO_LIFETIME_DISCONNECT 0
+
+struct rpl_dio_destprefix {
+ u_int8_t rpl_dio_type;
+ u_int8_t rpl_dio_len;
+ u_int8_t rpl_dio_prefixlen; /* in bits */
+ u_int8_t rpl_dio_prf; /* flags, including Route Preference */
+ u_int32_t rpl_dio_prefixlifetime; /* in seconds */
+ u_int8_t rpl_dio_prefix[0]; /* variables number of bytes */
+} PACKED;
+
+/* section 6.4.1, DODAG Information Object (DIO) */
+struct nd_rpl_dao {
+ u_int8_t rpl_instanceid;
+ u_int8_t rpl_flags; /* bit 7=K, 6=D */
+ u_int8_t rpl_resv;
+ u_int8_t rpl_daoseq;
+ u_int8_t rpl_dagid[0]; /* [DAGID_LEN] present when D set. */
+} PACKED;
+
+/* indicates if this DAO is to be acK'ed */
+#define RPL_DAO_K_SHIFT 7
+#define RPL_DAO_K_MASK (1 << RPL_DAO_K_SHIFT)
+#define RPL_DAO_K(X) (((X)&RPL_DAO_K_MASK) >> RPL_DAO_K_SHIFT)
+
+/* indicates if the DAGID is present */
+#define RPL_DAO_D_SHIFT 6
+#define RPL_DAO_D_MASK (1 << RPL_DAO_D_SHIFT)
+#define RPL_DAO_D(X) (((X)&RPL_DAO_D_MASK) >> RPL_DAO_D_SHIFT)
+
+struct rpl_dao_target {
+ u_int8_t rpl_dao_type;
+ u_int8_t rpl_dao_len;
+ u_int8_t rpl_dao_flags; /* unused */
+ u_int8_t rpl_dao_prefixlen; /* in bits */
+ u_int8_t rpl_dao_prefix[0]; /* variables number of bytes */
+} PACKED;
+
+/* section 6.5.1, Destination Advertisement Object Acknowledgement (DAO-ACK) */
+struct nd_rpl_daoack {
+ u_int8_t rpl_instanceid;
+ u_int8_t rpl_flags; /* bit 7=D */
+ u_int8_t rpl_daoseq;
+ u_int8_t rpl_status;
+ u_int8_t rpl_dagid[0]; /* [DAGID_LEN] present when D set. */
+} PACKED;
+/* indicates if the DAGID is present */
+#define RPL_DAOACK_D_SHIFT 7
+#define RPL_DAOACK_D_MASK (1 << RPL_DAOACK_D_SHIFT)
+#define RPL_DAOACK_D(X) (((X)&RPL_DAOACK_D_MASK) >> RPL_DAOACK_D_SHIFT)
+
+
+
+#define _RPL_H_
+#endif /* _RPL_H_ */
+
+/*
+ * Local Variables:
+ * c-basic-offset:4
+ * c-style: whitesmith
+ * End:
+ */
+
projects / tcpdump / commitdiff
