diff options
| author | Phil Sutter <phil@nwl.cc> | 2021-05-04 13:41:38 +0200 |
|---|---|---|
| committer | Phil Sutter <phil@nwl.cc> | 2021-05-19 11:52:05 +0200 |
| commit | 0e3871cfd9a1e32a4ac041ce87a8057b11a89924 (patch) | |
| tree | 926b57779c199024a9d8e1ceb8fd031ff28f88b7 /src/scanner.l | |
| parent | fd81d3ec3ae8b8d1d54a708d63b2dab2c8508c90 (diff) | |
exthdr: Implement SCTP Chunk matching
Extend exthdr expression to support scanning through SCTP packet chunks
and matching on fixed fields' values.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'src/scanner.l')
| -rw-r--r-- | src/scanner.l | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/scanner.l b/src/scanner.l index d568847d..5c493e39 100644 --- a/src/scanner.l +++ b/src/scanner.l @@ -213,6 +213,7 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr}) %s SCANSTATE_EXPR_NUMGEN %s SCANSTATE_EXPR_QUEUE %s SCANSTATE_EXPR_RT +%s SCANSTATE_EXPR_SCTP_CHUNK %s SCANSTATE_EXPR_SOCKET %s SCANSTATE_STMT_LOG @@ -530,9 +531,46 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr}) "sctp" { scanner_push_start_cond(yyscanner, SCANSTATE_SCTP); return SCTP; } <SCANSTATE_SCTP>{ + "chunk" { scanner_push_start_cond(yyscanner, SCANSTATE_EXPR_SCTP_CHUNK); return CHUNK; } "vtag" { return VTAG; } } +<SCANSTATE_EXPR_SCTP_CHUNK>{ + "data" { return DATA; } + "init" { return INIT; } + "init-ack" { return INIT_ACK; } + "heartbeat" { return HEARTBEAT; } + "heartbeat-ack" { return HEARTBEAT_ACK; } + "abort" { return ABORT; } + "shutdown" { return SHUTDOWN; } + "shutdown-ack" { return SHUTDOWN_ACK; } + "error" { return ERROR; } + "cookie-echo" { return COOKIE_ECHO; } + "cookie-ack" { return COOKIE_ACK; } + "ecne" { return ECNE; } + "cwr" { return CWR; } + "shutdown-complete" { return SHUTDOWN_COMPLETE; } + "asconf-ack" { return ASCONF_ACK; } + "forward-tsn" { return FORWARD_TSN; } + "asconf" { return ASCONF; } + + "tsn" { return TSN; } + "stream" { return STREAM; } + "ssn" { return SSN; } + "ppid" { return PPID; } + "init-tag" { return INIT_TAG; } + "a-rwnd" { return A_RWND; } + "num-outbound-streams" { return NUM_OSTREAMS; } + "num-inbound-streams" { return NUM_ISTREAMS; } + "initial-tsn" { return INIT_TSN; } + "cum-tsn-ack" { return CUM_TSN_ACK; } + "num-gap-ack-blocks" { return NUM_GACK_BLOCKS; } + "num-dup-tsns" { return NUM_DUP_TSNS; } + "lowest-tsn" { return LOWEST_TSN; } + "seqno" { return SEQNO; } + "new-cum-tsn" { return NEW_CUM_TSN; } +} + "rt" { scanner_push_start_cond(yyscanner, SCANSTATE_EXPR_RT); return RT; } "rt0" { return RT0; } "rt2" { return RT2; } |