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2020-02-21mz: Zero memory allocated for new automops elementMichael R Torres1-1/+1
Prevent crashes when using mausezahn in interactive mode by using calloc to zero the memory upon allocation. Fixes #195 Signed-off-by: Michael R Torres <mic.ric.tor@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2020-02-20mz: Fix accidental assignment in conditional statementMichael R. Torres1-2/+2
Corrects the accidental assignment of _c_ to 'c' or 'p' due to a missing equals sign. This enables the proper display of the missing argument error message for all relevant options. Signed-off-by: Michael R Torres <mic.ric.tor@gmail.com>
2019-10-04mausezahn: Support -R to set packet priorityPetr Machata3-1/+27
Add a command line option -R to specify SO_PRIORITY socket option. This then sets priority of the generated SKBs, which is handy for testing Qdiscs and other priority-dependent functionality. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2018-10-04mz: Add error handling for mismatched address familiesMandar Gokhale1-13/+70
Check for errors in IP addresses specified, and throw an appropriate error if they are not specified properly, e.g. if user uses `-6` option with an IPv4 source address. Closes #166 Signed-off-by: Mandar Gokhale <mandarg@mandarg.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2018-08-22mausezahn: improve random mac address generationMatteo Croce5-41/+29
Modify -b option to generate all random MAC addresses. Improve the random generation algorithm, use nrand48() which fills the ethernet address in two calls instead of six calls to rand() and six floating point calculations. Set the locally administered bit of generated MAC addresses. Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2018-05-31mausezahn: Restore handling of raw hex string passed in on command lineNick Grauel1-1/+5
Originally all hex strings (whether they were given on the command line or in a file) were handled by a call to str2hex(): bytestring_s = str2hex (tx.arg_string, bytestring, MAX_PAYLOAD_SIZE); Commit f634c74 added code to parse out "payload=" or "p=" flags that may have been added at the start of the hex string. This code also changed the logic around this str2hex() call to only call the function and populate bytestring_s if one of these flags was found. This broke the ability to pass in a raw hex string on the command line since it fails the check and bytestring_s is never populated with the hex bytes. I've added an else condition to make the str2hex() call using the old method in cases where no "payload=" or "p=" flags are found. Signed-off-by: Nick Grauel <nicolas.grauel@plexxi.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2018-05-15mausezahn: Fix IPv6 address comparisonPetr Machata1-2/+2
CMP_INT evaluates its arguments more than once, and thus passing a post-incremented pointer as an argument causes double increments and hence buffer overruns. This can be observed by erratic behavior of IPv6 address ranges. Fix by moving the increment to loop header. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2018-04-19mausezahn: fix strtok() segfault if s or m are missingDaniel Roberson1-7/+21
The -d flag will result in a segmentation fault if 'm' or 's' are specified without a numeric value. Example: mausezahn -d m ### Results in a crash Signed-off-by: Daniel Roberson <daniel@planethacker.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-07-25mausezahn: fix segmentation faultJia Zhouyang1-0/+8
Mausezahn will crash when given wrong payload file, e.g., "$./mausezahn -f wrong_file". This patch fixes the segmentation fault by adding error-handling code to fopen. Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-07-04staging: compilation fix with new gccJaroslav Škarvada1-0/+1
Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
2016-12-09Revert "mausezahn: Add error handling for mismatched address families"Tobias Klauser1-10/+1
This reverts commit bf0df3ec1875df4b167aedd0fff25e7e56408b6b. It turns out, just checking for "." in the IPv4 source will prevent the user from providing an FQDN (which is explicitely allowed and supported). Also, an FQDN would be a valid argument for the IPv6 source, so the check for ":" is also not sufficient. Reference: #166 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-12-08mausezahn: Add error handling for mismatched address familiesMandar Gokhale1-1/+10
Currently, mausezahn fails silently if, say the user has specified IPv6 addresses using `-A` and `-B` but has forgotten the -6 option. Add error handling for this and the (probably uncommon) reverse case, i.e. v4 src/dst specified, but used with the -6 option. Signed-off-by: Mandar Gokhale <mandarg@mandarg.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-11-23mausezahn: Use all-nodes link local address for IPv6Mandar Gokhale1-3/+1
Use all-nodes link local address for IPv6 when destination is not specified. There is a comment that says this should be done anyway. According to RFC 4291, FF01:0:0:0:0:0:0:1 should be the correct address. Signed-off-by: Mandar Gokhale <mandarg@mandarg.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-11-18mausezahn: Typofix & grammar changeMandar Gokhale1-4/+4
Closes #161 Signed-off-by: Mandar Gokhale <mandarg@mandarg.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-09-21mz: Check device argument by ifindex instead of name prefixVadim Kochan1-7/+3
Check device argument by valid ifindex instead of guessing it by different device name prefixes like "eth", "ath", "ens", "enp". Use __device_ifindex(...) function for this, which needs to add few more dependencies like sock.o, link.o to the Makefile for mausezahn. Closes #159 Suggested-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-03-29mausezahn: Allow IPv6 ranges to be specified for source and dest addressesTommy Beadle5-34/+444
This allows a user to pass a range of IPv6 addresses, either like: fec0:5000::1-fec0:5000::100 or in CIDR notation: fec0:5000::0/112 These can be used for the -A and/or -B command-line options. The largest range that can be used is a /64. In other words, if using CIDR notation, the masklen must be <= 128 and >= 64. Signed-off-by: Tommy Beadle <tbeadle@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-01-21mausezahn: Fix reading of hex payload fileThomas Fleischmann1-2/+6
Using the option -F with mausezahn, to read input out of a hexfile, results in corrupt data transmitted (first byte will always be 0). Properly parse "payload="/p=" at the start of the file by the same method as used in layer3.c and layer4.c Closes #153 Reference: http://permalink.gmane.org/gmane.linux.network.netsniff-ng/600 Signed-off-by: Thomas Fleischmann <thomas.fleischmann.08@googlemail.com> Reported-by: Thomas De Schampheleire Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-04-21mausezahn: Make sure '\0' is written after strncpyTobias Klauser1-2/+3
Make sure params is always NULL-terminated as strncpy() doesn't guarantee this. Closes #134 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-03-30mz: Make access to pcap init functions thread safeVadim Kochan1-5/+16
mz fails to start in cli mode and prints each time different pcap errors: $ mz -x -V fatal flex scanner internal error--end of buffer missed rx_arp: [ERROR] Error calling pcap_compile or simply shuts down. Sometimes it successfully gets up. Seems some initialization pcap functions are not thread safer. Fixed by using mutex locking before entering pcap_loop() Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-03-17mz: Add igmp v1/v2 packet type crafting supportVadim Kochan4-32/+153
Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-03-02mz: Allow to print packet types by '-t help'Vadim Kochan1-68/+70
Changed to print packet types by '-t help' earlier before mz will try to identify link device to bind. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tklauser: whitespace cleanup and minor commit message adjustments] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-20mz: Dont bind to dev if help was specifiedVadim Kochan1-6/+12
Fixed warnings: Warning: [lookupdev.c get_dev_params()] Cannot open socket! when specify help for packet type: # mz -t tcp help Also fixes delayed output of the same command if user is root. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-01-11mz: allow for zero udp checksumMark Latimer1-2/+4
I have been investigating tools to generate UDP with checksums of zero for software testing. This is legal in IPv4 but unwise due to inability to verify the data has not been corrupted. I found that mausezahn was not able to create these packets due despite being able to create incorrect UDP checksums. The code does not distinguish set to zero and unset. Results as seen by wireshark (UDP checksum verification enabled) mausezahn eth0 -A 192.168.0.105 -B 192.168.0.104 -t udp "sp=32452,dp=1024" -P Hello -> UDP checksum is automatically set to the valid value. mausezahn eth0 -A 192.168.0.105 -B 192.168.0.104 -t udp "sp=32452,dp=1024,udp_sum=1" -P Hello -> UDP checksum is set to 1 (which is invalid and highlighted by wireshark). mausezahn eth0 -A 192.168.0.105 -B 192.168.0.104 -t udp "sp=32452,dp=1024,udp_sum=0" -P Hello -> Before patch the checksum was set to the valid value. -> After patch the checksum was sent to zero. Signed-off-by: Mark Latimer <mark.latimer@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-09-03mausezahn: Fix non-ANSI function declarationsTobias Klauser21-29/+27
ANSI C doesn't allow empty parameter list, thus use void where appropriate. This fixes the corresponding sparse warning. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-05mausezahn: provide listen-addr option to configuration fileJon Schipp2-5/+7
Specify the listen-addr for the CLI in /etc/netsniff-ng/mausezahn.conf and remove the message, "mz: device not given, will use eth0" since we're listening by IP, rather than interface now, and this shows continues to show. $ grep listen-addr /etc/netsniff-ng/mausezahn.conf listen-addr = 127.0.0.1 $ mausezahn -V -x mz: device eth0 got assigned 10.0.2.15 and is a possible candidate. mz: device lo got assigned 127.0.0.1 (loopback) Opening config file /etc/netsniff-ng/mausezahn.conf... ... Mausezahn accepts incoming Telnet connections on 127.0.0.1:25542. Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-04mausezahn: provide port option to configuration fileJon Schipp2-7/+10
Specify the port for the CLI in /etc/netsniff-ng/mausezahn.conf like so: $ grep port /etc/netsniff-ng/mausezahn.conf port = 65000 $ mausezahn -V -x -l 127.0.0.1 Mausezahn 0.40 - (C) 2007-2010 by Herbert Haas - http://www.perihel.at/sec/mz/ Use at your own risk and responsibility! -- Verbose mode -- ... Opening config file /etc/netsniff-ng/mausezahn.conf... ... Mausezahn accepts incoming Telnet connections on 127.0.0.1:65000. Signed-off-by: Jon Schipp <jonschipp@gmail.com> [tklauser: Fixed whitespace issues for patch to apply cleanly] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-07-28mausezahn: cli.h: increase buffer sizeJon Schipp1-1/+1
Tobias pointed out and fixed in commit 9ef1dd15551f ("mausezahn: Increase buffer size for listen address string") that the buffer isn't log enough to hold the null terminator character. The declaration of the buffer in cli.h was missed though. Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> [commit msg edited]
2014-07-28mausezahn: change configuration file name to mausezahn.confJon Schipp1-2/+2
Commit 134a7beb7ab ("mausezahn: re-work configuration file") changed mausezahn to look for the configuration file in /etc/netsniff-ng. The filename was intended to be mausezahn.conf not mausezahn.cfg to fit with the other *.conf file extensions in /etc/netsniff-ng, so change it now. Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> [commit msg edited]
2014-07-25mausezahn: Increase buffer size for listen address stringTobias Klauser1-1/+1
Commit 2de653340c ("mausezahn: bind to IP address in interactive mode") introduced mz_listen_addr of size 15 to hold the IP address to bind to. Since an address can be maximum 15 characters long, this doesn't account for the terminating '\0'. Fix this by increasing the buffer size to 16. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-07-25mausezahn: bind to IP address in interactive modeJon Schipp3-3/+9
Adds new option ``-l'' that can be used to set mausezahn's listen address to bind to an IP of choice. e.g. mausezahn -l 127.0.0.1 -x Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-07-23mausezahn: re-work configuration fileJon Schipp2-3/+3
/etc/netsniff-ng/mausezahn.conf as mentioned in manual was never read because code was statically set to mz.cfg in /etc/mausezahn. This patch simplifies things by using the existing /etc/netsniff-ng directory created in the default install and still using a single configuration but with a an easier to remember name e.g. ${tool}.conf. Example: $ cat /etc/netsniff-ng/mausezahn.conf user = testuser password = testpassword enable = awesome Pre-patch: $ mausezahn -x Mausezahn accepts incoming Telnet connections on port 25542. mz: Problems opening config file. Will use defaults Post-patch: $ mausezahn -x Mausezahn accepts incoming Telnet connections on port 25542. Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-06-02mausezahn: Don't use ternary operator to decide which function to callTobias Klauser1-1/+5
Replace an odd use of the ternary operator with a more readable if/else. This fixes Debian Bug #750077. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-08-05mausezahn: libcli: add sys/time.h for older libcli versionsDaniel Borkmann1-0/+1
Older versions of libcli lack an include in libcli.h. [1] fixed the configure script to not fail in in the test [2], and an include into cli.h was added as well for the main mausezahn build. [1] http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/net-analyzer/netsniff-ng/files/netsniff-ng-0.5.8-libcli-test.patch?revision=1.1&view=markup [2] http://b-4.xmw.de/var/log/portage/build/net-analyzer/netsniff-ng-0.5.8_rc2:20130805-055918.log Reported-by: Michael Weber <michael@xmw.de> Suggested-by: Michael Weber <michael@xmw.de> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-07-09all: show git id in --version informationDaniel Borkmann1-2/+4
In order to be able to better track regressions or to give support, let us track the Git id as well in version information. This makes the ``--version'' switch actually useful. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30misc: Fixed spelling mistakesKartik Mistry1-1/+1
Fix for spelling mistakes detected by Lintian. Signed-off-by: Kartik Mistry <kartik@debian.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-26mausezahn: show long version on cliDaniel Borkmann1-1/+1
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-23make: include build nameDaniel Borkmann1-1/+1
Include long version string into tools when called with --version. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-21mausezahn: do not show version in promptDaniel Borkmann2-3/+1
Do not show the old mausezahn version in the prompt, since we use a different versioning scheme. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-13staging: add mausezahn staging directoryDaniel Borkmann62-0/+28650
After some back and forth, we decided that it is easier to maintain mausezahn in a staging directory until it is fully reworked and cleaned up to be ready to be fully integrated. This way, it is better than having it in a separate branch, and we can also accept patches from outside more easily. Also, while at it, fix up some function mismatches with libcli. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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