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2016-12-21trafgen: parser: Parse IPv6 address by strict match patternVadim Kochan1-4/+48
Used IPv6 pattern from nftables project [1] to match valid only IPv6 address to do not mess with MAC or other syntax patterns with ':' symbol. [1] http://git.netfilter.org/nftables/tree/src/scanner.l Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: add refrence to nftables source] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-10-04trafgen: parser: Add 'pfc()' function for PFC headerVadim Kochan1-1/+3
Add 'pfc()' function for PFC header creation with fields: code - MAC Control opcode prio - Priority enable vector prio(0)..prio(7) - Enable/disable pause for prio X time(0)..time(7) - Set pause time for prio X Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-10-04trafgen: parser: Add 'pause()' function for IEEE 802.3X PAUSE headerVadim Kochan1-0/+4
Add 'pause()' proto header function for IEEE 802.3X PAUSE header generation with the fields: code - MAC Control opcode (default 0x0001) time - PAUSE time (default 0) Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-07-13trafgen: proto: Add ICMPv4 header generationVadim Kochan1-0/+6
Support for generating ICMPv4 headers using the 'icmp4()/icmpv4()' trafgen generation functions. Fields supported: type Set type field (default 0: Echo reply) Supported keywords: echorequest, echoreply code Set code field (default 0) csum Set checksum field (calculated by default) mtu Set mtu field for destination unreachable (default 0) seq Set sequence field (default 0) id Set identifier field (default 0) addr Set redirect address (default 0.0.0.0) Example (send ping request): { icmpv4(echorequest, seq=1, id=1326) } Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: squash commits, consistency between functionality and docu] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-07-11trafgen: parser: Replace 'mtype' by 'type'Vadim Kochan1-1/+0
After splitting etype & type to different tokens it is possible to use 'type' for ICMP type field which is used by RFC. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-07-11trafgen: parser: Split [e]type to separate keywordsVadim Kochan1-1/+2
Split [e]type to separate 'type' & 'etype' keywords, the reason is that 'type' might be used in other protocol headers (e.g. ICMP). Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-04-25trafgen: proto: Add ICMPv6 header generationTobias Klauser1-0/+7
Support for generating simple ICMPv6 headers using the 'icmp6()/icmpv6()' trafgen generation function. Fields supported: mtype Message type (default: 0) Supported keywords: echorequest, echoreply code Code (default: 0) csum Message checksum (calculated by default) Examples: { eth(), ipv6(daddr=::1), icmpv6(echorequest), 42, 42, 0, 0 }' If not explicitely specified, the lower header is initialized as Ethernet. Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-04-25trafgen: proto: Add IPv6 header generationTobias Klauser1-3/+17
Support for generating simple IPv6 headers using the 'ip6()/ipv6()' trafgen generation function. Fields supported: ver|version Version (default: 6) tc|tclass Traffic class (default: 0) fl|flow Flow Label (default: 0) len|length Payload length (calculated by default) nh|nexthdr Type of next header (default: 0) hl|hoplimit|ttl Hop Limit, TTL (default: 0) sa|saddr Source IPv6 address (default: device address) da|daddr Destination IPv6 address (default: 0:0:0:0:0:0:0:0) Examples: { eth(), ipv6(daddr=1:2:3:4:5:6:7:8) } { ipv6(tc=2, hl=3, daddr=::1) } { eth(), ipv6(nh=58, sa=2001:db8::, da=::1), 128, 0, 0x52, 0x03, 0, 0, 0, 0 } If not explicitely specified, the lower header is initialized as Ethernet. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-02-23trafgen: parser: Add syntax for MPLS header creatingVadim Kochan1-0/+7
Add 'mpls()' function for creating MPLS header with parameters: lbl|label MPLS label last Indicates the last label on MPLS stack tc|tclass|exp Traffic Class (TC) ttl TTL (Time To Live) Currently only unicast MPLS is supported, but multicast might be set via 'eth()' function. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-02-02trafgen: parser: Add syntax for VLAN header creatingVadim Kochan1-0/+9
Add 'vlan()' function to generate VLAN header. Fields supported: tpid|proto Set TPID (Tag Protocol Identifier) (default 0x8100) 1ad Set TPID field as 0x88a8 1q Set TPID field as 0x8100 tci Set TCI (Tag Control Information) (default 0) pcp Set PCP (Priority Code Point) (PCP) (default 0) dei|cfi Set DEI (Drop Eligible Indicator) (default 0) id Set VID (VLAN Identifier) (default 0) Examples: { eth(), vlan(id=1), ipv4() } { vlan(id=1, 1ad), vlan(id=100, pcp=3), ipv4() } Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-02-01trafgen: parser: Fix parsing of "prot[o]" field in eth()Tobias Klauser1-2/+1
Commit 2ba202b introduced the [e]type field for specifiying the Ethertype, but at the same time made the existing "prot[o]" field name not work anymore. Fix it by providing a specific parser rule as it cannot be solved in the lexer grammar alone (which will always use the first matching token). Fixes: 2ba202b ("trafgen: parser: Support "etype"/"type" keywords for Ethertype") Reported-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-02-01trafgen: parser: Add TCP header generation functionTobias Klauser1-0/+16
Add a function 'tcp()' to generate TCP headers from the trafgen configuration language. Fields supported: sp|sport TCP source port (default 0) dp|dport TCP destination port (default 0) seq Sequence number (default: 0) aseq|ackseq Acknowledgement number (default 0) doff|hlen Header length/data offset (default: 5) cwr Congestion Window Reduced flag (default: 0) ece|ecn ECN-Echo flag (default: 0) urg Urgent flag (default: 0) ack Acknowledgement flag (default: 0) psh Push flag (default: 0) rst Reset flag (default: 0) syn Synchronize flag (default: 0) fin Finish flag (default: 0) win|window Receive window size (default: 0) csum Checksum field (calculated automatically) urgptr Urgent pointer (default: 0) Example (SYN on port 80/http): { tcp(dport=80, syn, window=5840) } Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-29trafgen: parser: Rename IPv4 specific types and union membersTobias Klauser1-3/+3
Rename lexer/parser type and union member ip_addr to ip4_addr. This will make it easier to distinguish from IPv6 addresses, to be added an a follow-up patch. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-29trafgen: parser: Support "etype"/"type" keywords for EthertypeTobias Klauser1-1/+8
The IEEE 802.3 standard commonly refers to the field specifying the upper layer protocol as Ethertype, not protocol. Thus, also support the keywords "etype" and "type" for this field. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-29trafgen: parser: Add syntax to build UDP headerVadim Kochan1-0/+4
Add function 'udp()' to generate UDP header. Fields supported: sp|sport UDP source port (default 0) dp|dport UDP destination port (default 0) len|length Length of UDP header + payload (calculated automatically) csum Checksum field (calculated automatically) Example (Echo request): { udp(dport=7) } Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-29trafgen: parser: Add syntax for IPv4 protocol generationVadim Kochan1-0/+15
Add 'ip4(), ipv4()' function to build IPv4 header. Fields supported: ihl IPv4 header length (default 5 ) ver|version IPv4 version (default 4) ttl Time To Live (TTL) field (default 0) dscp DiffServ field (default 0) ecn ECN bits (default 0) tos TOS (DSCP + ECN) field (default 0) len|length IPv4 header + payload length (calculated by default) id Identifier (default 0) flags Flags field (default 0) frag Fragment offset (default 0) csum IPv4 header checksum (calculated by default) df Set DF (Dont Fragment) bit to 1 (default is 0) mf Set MF (More Fragments) bit to 1 (default is 0) sa|saddr IPv4 source address (default used from output device) da|daddr IPv4 destination address (default 0.0.0.0) proto IPv4 protocol id (default 0) Example: { ip4(df, mf, frag=100, prot=0x1, ecn=2, dscp=20) } { ip4(da=1.1.1.1), ip4(sa=3.3.3.3, da=3.3.3.4) } Last example generates IP-in-IP packet. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-28trafgen: parser: Add syntax to generate ARP header fieldsVadim Kochan1-0/+17
Add function 'arp()' to support generating ARP header fields from the trafgen configuration language. Supported fields: htype hardware type, default: 1 (Ethernet) ptype protocol type, default: 0x0800 (IP) op|oper operation (req|request, reply, <num>), default: 1 (request) sha|smac sender MAC address, default: device MAC spa|sip sender IP address, default: device IP tha|tmac target MAC address, default: 00:00:00:00:00:00 tpa|tip target IP address, default: 0.0.0.0 Note: setting hlen and tlen is not supported, these will by set to hlen=6 and plen=4 in any case. Example usage: { arp(op=request, sip=1.1.1.1, smac=11:22:33:44:55:66, tip=42.42.42.42) } { arp() } Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: document keywords in commit message] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-28trafgen: parser: Add syntax to generate Ethernet header fieldsVadim Kochan1-0/+15
Add function 'eth()' to support generating Ethernet header fields from the trafgen configuration language. Supported fields: da|daddr destination address, default: 00:00:00:00:00:00 sa|saddr source address, default: device MAC prot|proto protocol number, default: 0x0000 Example usage: { eth(prot=0x0800, da=11:22:33:44:55:66), fill(0xff, 60) } { eth(prot=0x0800) } { eth() } It is important that proto_init is called before fields will be filled to initialize the specified proto with header fields. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: document supported keywords in commit message] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Add checksum helpers for TCP/UDP over IPv6Tobias Klauser1-0/+2
Add the csumudp6 and csumtcp6 helper functions in order to simplify checksum generation for TCP/UDP packets sent over IPv6. trafgen example for TCP over IPv6: { /* MAC Destination */ fill(0xff, 6), /* MAC Source */ 0x00, 0x02, 0xb3, drnd(3), /* IPv6 Protocol */ c16(0x86DD), /* Version, Traffic Class, Flow Label */ 0b01100000, c8(0), c16(0), /* Payload Length */ c16(54), /* Next Header (TCP) */ c8(6), /* Hop Limit */ c8(64), /* Source IPv6 */ 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, 0xac, 0x6f, 0xff, 0xfe, 0xa4, 0x12, 0xe3, /* Destination IPv6 */ 0xfe, 0x80, 0x82, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xde, 0xff, 0xfe, 0x00, 0x06, 0xde, /* TCP Source Port */ c16(55042), /* TCP Destination Port */ c16(55043), /* TCP Sequence Number */ drnd(4), /* TCP Ackn. Number */ c32(0), /* TCP Header length + TCP SYN/ECN Flag */ c16((8 << 12) | (1 << 1) | (1 << 6)) /* Window Size */ c16(16), /* TCP Checksum (offset IPv6, offset TCP) */ csumtcp6(14, 54), /* TCP Options */ 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x06, 0x91, 0x68, 0x7d, 0x06, 0x91, 0x68, 0x6f, /* Data blob */ "foobar!", } Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-24misc: fix some minor compile warnings all overDaniel Borkmann1-2/+1
Some regarding unused parameter, some regarding signed/unsigned comparison. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-13trafgen: lexer: return original string if no shellcodeDaniel Borkmann1-3/+3
When do not detect any shellcode, make sure we return the original string only. Reported-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-10trafgen: lexer: also allow short forms for hex and binaryDaniel Borkmann1-4/+6
Also allow for ... - hex: 0xff, xff - binary: 0b11110000, b11110000 Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-27trafgen: lexer: return if no needle foundDaniel Borkmann1-4/+5
Also return if no needle has been found in the shell code haystack. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-26trafgen: update help descriptionDaniel Borkmann1-0/+1
After commit f9591eebe40c (trafgen: lexer/parser: fix cpu() selection and whitespacing), we also need to fixup the help description, so that users start using the cpu(X-Y) notation instead. Also, reintroduce the alias csum16 for csumip. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-25trafgen: lexer/parser: fix cpu() selection and whitespacingDaniel Borkmann1-2/+2
It looks unintuitive when once needs to write cpu(0:3), so also allow cpu(0-3). Then it's quite stupid to enforce whitespace after the double colon before the curley braces open. So make this rather optional here. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-16trafgen: add csumicmp for ICMP checksum calculationDaniel Borkmann1-0/+2
Both, the IP and ICMP checksums use the same algorithm from RFC1071. Thus, it's enough if we give csumip an alias to csumicmp, so that it can be used in trafgen packet configurations. It's calculated from the ICMP header + data, with value 0 for this field. Suggested-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-15all: import netsniff-ng 0.5.8-rc0 sourceDaniel Borkmann1-0/+152
We decided to get rid of the old Git history and start a new one for several reasons: *) Allow / enforce only high-quality commits (which was not the case for many commits in the history), have a policy that is more close to the one from the Linux kernel. With high quality commits, we mean code that is logically split into commits and commit messages that are signed-off and have a proper subject and message body. We do not allow automatic Github merges anymore, since they are total bullshit. However, we will either cherry-pick your patches or pull them manually. *) The old archive was about ~27MB for no particular good reason. This basically derived from the bad decision that also some PDF files where stored there. From this moment onwards, no binary objects are allowed to be stored in this repository anymore. The old archive is not wiped away from the Internet. You will still be able to find it, e.g. on git.cryptoism.org etc. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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