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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-09-19 04:14:26 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-09-19 04:14:26 +0000
commitc4e8a3222648fcf22ca207f1815ebbf7cd144eeb (patch)
tree93d5c6aa93d9987680dd1adad5685e2ad698f223 /doc/rawshark.adoc
parentAdding upstream version 4.2.6. (diff)
downloadwireshark-upstream.tar.xz
wireshark-upstream.zip
Adding upstream version 4.4.0.upstream/4.4.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-include::../docbook/attributes.adoc[]
-= rawshark(1)
-:doctype: manpage
-:stylesheet: ws.css
-:linkcss:
-:copycss: ../docbook/{stylesheet}
-
-== NAME
-
-rawshark - Dump and analyze raw pcap data
-
-== SYNOPSIS
-
-[manarg]
-*rawshark*
-[ *-d* <encap:linktype>|<proto:protoname> ]
-[ *-F* <field to display> ]
-[ *-l* ]
-[ *-m* <bytes> ]
-[ *-o* <preference setting> ] ...
-[ *-p* ]
-[ *-r* <pipe>|- ]
-[ *-R* <read (display) filter> ]
-[ *-s* ]
-[ *-S* <field format> ]
-[ *options* ]
-
-[manarg]
-*rawshark*
-*-h|--help*
-
-[manarg]
-*rawshark*
-*-v|--version*
-
-== DESCRIPTION
-
-*Rawshark* reads a stream of packets from a file or pipe, and prints a line
-describing its output, followed by a set of matching fields for each packet
-on stdout.
-
-== INPUT
-
-Unlike *TShark*, *Rawshark* makes no assumptions about encapsulation or
-input. The *-d* and *-r* flags must be specified in order for it to run.
-One or more *-F* flags should be specified in order for the output to be
-useful. The other flags listed above follow the same conventions as
-*Wireshark* and *TShark*.
-
-*Rawshark* expects input records with the following format by default. This
-matches the format of the packet header and packet data in a pcap-formatted
-file on disk.
-
- struct rawshark_rec_s {
- uint32_t ts_sec; /* Time stamp (seconds) */
- uint32_t ts_usec; /* Time stamp (microseconds) */
- uint32_t caplen; /* Length of the packet buffer */
- uint32_t len; /* "On the wire" length of the packet */
- uint8_t data[caplen]; /* Packet data */
- };
-
-If *-p* is supplied *rawshark* expects the following format. This
-matches the __struct pcap_pkthdr__ structure and packet data used in
-libpcap, Npcap, or WinPcap. This structure's format is platform-dependent; the
-size of the __tv_sec__ field in the __struct timeval__ structure could be
-32 bits or 64 bits. For *rawshark* to work, the layout of the
-structure in the input must match the layout of the structure in
-*rawshark*. Note that this format will probably be the same as the
-previous format if *rawshark* is a 32-bit program, but will not
-necessarily be the same if *rawshark* is a 64-bit program.
-
- struct rawshark_rec_s {
- struct timeval ts; /* Time stamp */
- uint32_t caplen; /* Length of the packet buffer */
- uint32_t len; /* "On the wire" length of the packet */
- uint8_t data[caplen]; /* Packet data */
- };
-
-In either case, the endianness (byte ordering) of each integer must match the
-system on which *rawshark* is running.
-
-== OUTPUT
-
-If one or more fields are specified via the *-F* flag, *Rawshark* prints
-the number, field type, and display format for each field on the first line
-as "packet number" 0. For each record, the packet number, matching fields,
-and a "1" or "0" are printed to indicate if the field matched any supplied
-display filter. A "-" is used to signal the end of a field description and
-at the end of each packet line. For example, the flags *-F ip.src -F
- dns.qry.type* might generate the following output:
-
- 0 FT_IPv4 BASE_NONE - 1 FT_UINT16 BASE_HEX -
- 1 1="1" 0="192.168.77.10" 1 -
- 2 1="1" 0="192.168.77.250" 1 -
- 3 0="192.168.77.10" 1 -
- 4 0="74.125.19.104" 1 -
-
-Note that packets 1 and 2 are DNS queries, and 3 and 4 are not. Adding *-R "not dns"* still prints each line, but there's an indication
-that packets 1 and 2 didn't pass the filter:
-
- 0 FT_IPv4 BASE_NONE - 1 FT_UINT16 BASE_HEX -
- 1 1="1" 0="192.168.77.10" 0 -
- 2 1="1" 0="192.168.77.250" 0 -
- 3 0="192.168.77.10" 1 -
- 4 0="74.125.19.104" 1 -
-
-Also note that the output may be in any order, and that multiple matching
-fields might be displayed.
-
-== OPTIONS
-
--d <encapsulation>::
-+
---
-Specify how the packet data should be dissected. The encapsulation is of the
-form __type:value__, where __type__ is one of:
-
-*encap*:__name__ Packet data should be dissected using the
-libpcap/Npcap/WinPcap data link type (DLT) __name__, e.g. *encap:EN10MB* for
-Ethernet. Names are converted using pcap_datalink_name_to_val().
-A complete list of DLTs can be found at
-https://www.tcpdump.org/linktypes.html.
-
-*encap*:__number__ Packet data should be dissected using the
-libpcap/Npcap/WinPcap LINKTYPE_ __number__, e.g. *encap:105* for raw IEEE
-802.11 or *encap:101* for raw IP.
-
-*proto*:__protocol__ Packet data should be passed to the specified Wireshark
-protocol dissector, e.g. *proto:http* for HTTP data.
---
-
--F <field to display>::
-+
---
-Add the matching field to the output. Fields are any valid display filter
-field. More than one *-F* flag may be specified, and each field can match
-multiple times in a given packet. A single field may be specified per *-F*
-flag. If you want to apply a display filter, use the *-R* flag.
---
-
--h|--help::
-Print the version number and options and exit.
-
--l::
-+
---
-Flush the standard output after the information for each packet is
-printed. (This is not, strictly speaking, line-buffered if *-V*
-was specified; however, it is the same as line-buffered if *-V* wasn't
-specified, as only one line is printed for each packet, and, as *-l* is
-normally used when piping a live capture to a program or script, so that
-output for a packet shows up as soon as the packet is seen and
-dissected, it should work just as well as true line-buffering. We do
-this as a workaround for a deficiency in the Microsoft Visual C++ C
-library.)
-
-This may be useful when piping the output of *TShark* to another
-program, as it means that the program to which the output is piped will
-see the dissected data for a packet as soon as *TShark* sees the
-packet and generates that output, rather than seeing it only when the
-standard output buffer containing that data fills up.
---
-
--m <memory limit bytes>::
-Limit rawshark's memory usage to the specified number of bytes. POSIX
-(non-Windows) only.
-
--o <preference>:<value>::
-+
---
-Set a preference value, overriding the default value and any value read
-from a preference file. The argument to the option is a string of the
-form __prefname:value__, where __prefname__ is the name of the
-preference (which is the same name that would appear in the preference
-file), and __value__ is the value to which it should be set.
---
-
--p::
-+
---
-Assume that packet data is preceded by a pcap_pkthdr struct as defined in
-pcap.h. On some systems the size of the timestamp data will be different from
-the data written to disk. On other systems they are identical and this flag has
-no effect.
---
-
--r <pipe>|-::
-+
---
-Read packet data from __input source__. It can be either the name of a FIFO
-(named pipe) or ``-'' to read data from the standard input, and must have
-the record format specified above.
-
-If you are sending data to rawshark from a parent process on Windows you
-should not close rawshark's standard input handle prematurely, otherwise
-the C runtime might trigger an exception.
---
-
--R <read (display) filter>::
-+
---
-Cause the specified filter (which uses the syntax of read/display filters,
-rather than that of capture filters) to be applied before printing the output.
---
-
--s::
-Allows standard pcap files to be used as input, by skipping over the 24
-byte pcap file header.
-
--S::
-+
---
-Use the specified format string to print each field. The following formats
-are supported:
-
-*%D* Field name or description, e.g. "Type" for dns.qry.type
-
-*%N* Base 10 numeric value of the field.
-
-*%S* String value of the field.
-
-For something similar to Wireshark's standard display ("Type: A (1)") you
-could use *%D: %S (%N)*.
---
-
--v|--version::
-Print the full version information and exit.
-
-include::dissection-options.adoc[tags=**;!tshark;!decode_as]
-
-include::diagnostic-options.adoc[]
-
-== READ FILTER SYNTAX
-
-For a complete table of protocol and protocol fields that are filterable
-in *TShark* see the xref:wireshark-filter.html[wireshark-filter](4) manual page.
-
-== FILES
-
-These files contains various *Wireshark* configuration values.
-
-Preferences::
-+
---
-The __preferences__ files contain global (system-wide) and personal
-preference settings. If the system-wide preference file exists, it is
-read first, overriding the default settings. If the personal preferences
-file exists, it is read next, overriding any previous values. Note: If
-the command line option *-o* is used (possibly more than once), it will
-in turn override values from the preferences files.
-
-The preferences settings are in the form __prefname:value__,
-one per line,
-where __prefname__ is the name of the preference
-and __value__ is the value to
-which it should be set; white space is allowed between *:* and
-__value__. A preference setting can be continued on subsequent lines by
-indenting the continuation lines with white space. A *#* character
-starts a comment that runs to the end of the line:
-
- # Capture in promiscuous mode?
- # TRUE or FALSE (case-insensitive).
- capture.prom_mode: TRUE
-
-The global preferences file is looked for in the __wireshark__ directory
-under the __share__ subdirectory of the main installation directory. On
-macOS, this would typically be
-__/Application/Wireshark.app/Contents/Resources/share__; on other
-UNIX-compatible systems, such as Linux, \*BSD, Solaris, and AIX, this
-would typically be __/usr/share/wireshark/preferences__ for
-system-installed packages and __/usr/local/share/wireshark/preferences__
-for locally-installed packages; on Windows, this would typically be
-__C:\Program Files\Wireshark\preferences__.
-
-On UNIX-compatible systems, the personal preferences file is looked for
-in __$XDG_CONFIG_HOME/wireshark/preferences__, (or, if
-__$XDG_CONFIG_HOME/wireshark__ does not exist while __$HOME/.wireshark__
-does exist, __$HOME/.wireshark/preferences__); this is typically
-__$HOME/.config/wireshark/preferences__. On Windows,
-the personal preferences file is looked for in
-__%APPDATA%\Wireshark\preferences__ (or, if %APPDATA% isn't defined,
-__%USERPROFILE%\Application Data\Wireshark\preferences__).
---
-
-Disabled (Enabled) Protocols::
-+
---
-The __disabled_protos__ files contain system-wide and personal lists of
-protocols that have been disabled, so that their dissectors are never
-called. The files contain protocol names, one per line, where the
-protocol name is the same name that would be used in a display filter
-for the protocol:
-
- http
- tcp # a comment
-
-The global __disabled_protos__ file uses the same directory as the global
-preferences file.
-
-The personal __disabled_protos__ file uses the same directory as the
-personal preferences file.
---
-
-Name Resolution (hosts)::
-+
---
-If the personal __hosts__ file exists, it is
-used to resolve IPv4 and IPv6 addresses before any other
-attempts are made to resolve them. The file has the standard __hosts__
-file syntax; each line contains one IP address and name, separated by
-whitespace. The same directory as for the personal preferences file is
-used.
-
-Capture filter name resolution is handled by libpcap on UNIX-compatible
-systems, such as Linux, macOS, \*BSD, Solaris, and AIX, and by Npcap or
-WinPcap on Windows. As such the Wireshark personal __hosts__ file will
-not be consulted for capture filter name resolution.
---
-
-Name Resolution (subnets)::
-+
---
-If an IPv4 address cannot be translated via name resolution (no exact
-match is found) then a partial match is attempted via the __subnets__ file.
-
-Each line of this file consists of an IPv4 address, a subnet mask length
-separated only by a / and a name separated by whitespace. While the address
-must be a full IPv4 address, any values beyond the mask length are subsequently
-ignored.
-
-An example is:
-
-# Comments must be prepended by the # sign!
-192.168.0.0/24 ws_test_network
-
-A partially matched name will be printed as "subnet-name.remaining-address".
-For example, "192.168.0.1" under the subnet above would be printed as
-"ws_test_network.1"; if the mask length above had been 16 rather than 24, the
-printed address would be ``ws_test_network.0.1".
---
-
-Name Resolution (ethers)::
-+
---
-The __ethers__ files are consulted to correlate 6-byte hardware addresses to
-names. First the personal __ethers__ file is tried and if an address is not
-found there the global __ethers__ file is tried next.
-
-Each line contains one hardware address and name, separated by
-whitespace. The digits of the hardware address are separated by colons
-(:), dashes (-) or periods (.). The same separator character must be
-used consistently in an address. The following three lines are valid
-lines of an __ethers__ file:
-
- ff:ff:ff:ff:ff:ff Broadcast
- c0-00-ff-ff-ff-ff TR_broadcast
- 00.00.00.00.00.00 Zero_broadcast
-
-The global __ethers__ file is looked for in the __/etc__ directory on
-UNIX-compatible systems, such as Linux, macOS, \*BSD, Solaris, and AIX,
-and in the main installation directory (for example, __C:\Program
-Files\Wireshark__) on Windows systems.
-
-The personal __ethers__ file is looked for in the same directory as the personal
-preferences file.
-
-Capture filter name resolution is handled by libpcap on UNIX-compatible
-systems and Npcap or WinPcap on Windows. As such the Wireshark personal
-__ethers__ file will not be consulted for capture filter name resolution.
---
-
-Name Resolution (manuf)::
-+
---
-The __manuf__ file is used to match the 3-byte vendor portion of a 6-byte
-hardware address with the manufacturer's name; it can also contain well-known
-MAC addresses and address ranges specified with a netmask. The format of the
-file is the same as the __ethers__ files, except that entries of the form:
-
- 00:00:0C Cisco
-
-can be provided, with the 3-byte OUI and the name for a vendor, and
-entries such as:
-
- 00-00-0C-07-AC/40 All-HSRP-routers
-
-can be specified, with a MAC address and a mask indicating how many bits
-of the address must match. The above entry, for example, has 40
-significant bits, or 5 bytes, and would match addresses from
-00-00-0C-07-AC-00 through 00-00-0C-07-AC-FF. The mask need not be a
-multiple of 8.
-
-The __manuf__ file is looked for in the same directory as the global
-preferences file.
---
-
-Name Resolution (services)::
-+
---
-The __services__ file is used to translate port numbers into names.
-
-The file has the standard __services__ file syntax; each line contains one
-(service) name and one transport identifier separated by white space. The
-transport identifier includes one port number and one transport protocol name
-(typically tcp, udp, or sctp) separated by a /.
-
-An example is:
-
- mydns 5045/udp # My own Domain Name Server
- mydns 5045/tcp # My own Domain Name Server
---
-
-Name Resolution (ipxnets)::
-+
---
-The __ipxnets__ files are used to correlate 4-byte IPX network numbers to
-names. First the global __ipxnets__ file is tried and if that address is not
-found there the personal one is tried next.
-
-The format is the same as the __ethers__
-file, except that each address is four bytes instead of six.
-Additionally, the address can be represented as a single hexadecimal
-number, as is more common in the IPX world, rather than four hex octets.
-For example, these four lines are valid lines of an __ipxnets__ file:
-
- C0.A8.2C.00 HR
- c0-a8-1c-00 CEO
- 00:00:BE:EF IT_Server1
- 110f FileServer3
-
-The global __ipxnets__ file is looked for in the __/etc__ directory on
-UNIX-compatible systems, such as Linux, macOS, \*BSD, Solaris, and AIX,
-and in the main installation directory (for example, __C:\Program
-Files\Wireshark__) on Windows systems.
-
-The personal __ipxnets__ file is looked for in the same directory as the
-personal preferences file.
---
-
-== ENVIRONMENT VARIABLES
-
-// Should this be moved to an include file?
-
-WIRESHARK_CONFIG_DIR::
-+
---
-This environment variable overrides the location of personal
-configuration files. On UNIX-compatible systems, such as Linux, macOS,
-\*BSD, Solaris, and AIX, it defaults to __$XDG_CONFIG_HOME/wireshark__
-(or, if that directory doesn't exist but __$HOME/.wireshark__ does
-exist, __$HOME/.wireshark__); this is typically
-__$HOME/.config/wireshark__. On Windows, it defaults to
-__%APPDATA%\Wireshark__ (or, if %APPDATA% isn't defined,
-__%USERPROFILE%\Application Data\Wireshark__). Available since
-Wireshark 3.0.
---
-
-WIRESHARK_DEBUG_WMEM_OVERRIDE::
-+
---
-Setting this environment variable forces the wmem framework to use the
-specified allocator backend for *all* allocations, regardless of which
-backend is normally specified by the code. This is mainly useful to developers
-when testing or debugging. See __README.wmem__ in the source distribution for
-details.
---
-
-WIRESHARK_RUN_FROM_BUILD_DIRECTORY::
-+
---
-This environment variable causes the plugins and other data files to be
-loaded from the build directory (where the program was compiled) rather
-than from the standard locations. It has no effect when the program in
-question is running with root (or setuid) permissions on UNIX-compatible
-systems, such as Linux, macOS, \*BSD, Solaris, and AIX.
---
-
-WIRESHARK_DATA_DIR::
-+
---
-This environment variable causes the various data files to be loaded from
-a directory other than the standard locations. It has no effect when the
-program in question is running with root (or setuid) permissions on
-UNIX-compatible systems.
---
-
-ERF_RECORDS_TO_CHECK::
-+
---
-This environment variable controls the number of ERF records checked when
-deciding if a file really is in the ERF format. Setting this environment
-variable a number higher than the default (20) would make false positives
-less likely.
---
-
-IPFIX_RECORDS_TO_CHECK::
-+
---
-This environment variable controls the number of IPFIX records checked when
-deciding if a file really is in the IPFIX format. Setting this environment
-variable a number higher than the default (20) would make false positives
-less likely.
---
-
-WIRESHARK_ABORT_ON_DISSECTOR_BUG::
-+
---
-If this environment variable is set, *Rawshark* will call abort(3)
-when a dissector bug is encountered. abort(3) will cause the program to
-exit abnormally; if you are running *Rawshark* in a debugger, it
-should halt in the debugger and allow inspection of the process, and, if
-you are not running it in a debugger, it will, on some OSes, assuming
-your environment is configured correctly, generate a core dump file.
-This can be useful to developers attempting to troubleshoot a problem
-with a protocol dissector.
---
-
-WIRESHARK_ABORT_ON_TOO_MANY_ITEMS::
-+
---
-If this environment variable is set, *Rawshark* will call abort(3)
-if a dissector tries to add too many items to a tree (generally this
-is an indication of the dissector not breaking out of a loop soon enough).
-abort(3) will cause the program to exit abnormally; if you are running
-*Rawshark* in a debugger, it should halt in the debugger and allow
-inspection of the process, and, if you are not running it in a debugger,
-it will, on some OSes, assuming your environment is configured correctly,
-generate a core dump file. This can be useful to developers attempting to
-troubleshoot a problem with a protocol dissector.
---
-
-== SEE ALSO
-
-xref:wireshark-filter.html[wireshark-filter](4), xref:wireshark.html[wireshark](1), xref:tshark.html[tshark](1), xref:editcap.html[editcap](1), xref:https://www.tcpdump.org/manpages/pcap.3pcap.html[pcap](3), xref:dumpcap.html[dumpcap](1),
-xref:text2pcap.html[text2pcap](1), xref:https://www.tcpdump.org/manpages/pcap-filter.7.html[pcap-filter](7) or xref:https://www.tcpdump.org/manpages/tcpdump.1.html[tcpdump](8)
-
-== NOTES
-
-This is the manual page for *Rawshark* {wireshark-version}.
-*Rawshark* is part of the *Wireshark* distribution.
-The latest version of *Wireshark* can be found at https://www.wireshark.org.
-
-HTML versions of the Wireshark project man pages are available at
-https://www.wireshark.org/docs/man-pages.
-
-== AUTHORS
-
-*Rawshark* uses the same packet dissection code that *Wireshark* does, as
-well as using many other modules from *Wireshark*; see the list of authors
-in the *Wireshark* man page for a list of authors of that code.
-