That way, we don't have to worry about multiple instances of an option
pointing to the same data. and having to worry about freeing data that's
pointed to by another instance.
Change-Id: I3470a9eebf346023713fd0d6ff2451d727c25089
Reviewed-on: https://code.wireshark.org/review/16471
Reviewed-by: Guy Harris <guy@alum.mit.edu>
A block can have zero or more instances of a given option. We
distinguish between "one instance only" options, where a block can have
zero or one instance, and "multiple instances allowed" options, where a
block can have zero or more instances.
For "one instance only" options:
"add" routines add an instance if there isn't one already
and fail if there is;
"set" routines add an instance if there isn't one already
and change the value of the existing instance if there is one;
"set nth" routines fail;
"get" routines return the value of the instance if there is one
and fail if there isn't;
"get nth" routines fail.
For "multiple instances allowed" options:
"add" routines add an instance;
"set" routines fail;
"set nth" routines set the value of the nth instance if there is
one and fail otherwise;
"get" routines fail;
"get nth" routines get the value if the nth instance if there is
one and fail otherwise.
Rename "optionblock" to just "block"; it describes the contents of a
block, including both mandatory items and options.
Add some support for NRB options, including IPv4 and IPv6 option types.
Change-Id: Iad184f668626c3d1498b2ed00c7f1672e4abf52e
Reviewed-on: https://code.wireshark.org/review/16444
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Dissector has always been able to cope with unknown record types so pass them
through (and call the data dissector from the ERF dissector in this case).
Previously was stopping processing on the first unrecognized record which is
very unhelpful for otherwise valid files that have new types mixed in.
Remove ERF type check altogether from open heuristic as ERF type could be past
48 in future and with more extension headers bit any byte value could be valid.
Also allow setting ERF_RECORDS_TO_CHECK to 0 to force skipping the heuristic.
Change-Id: I8331eef30ba2e949564f418b3100bd73b8f58116
Reviewed-on: https://code.wireshark.org/review/15361
Reviewed-by: Michael Mann <mmann78@netscape.net>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Done for performance improvements.
This could probably be done in checkAPIs.pl, but this was just
a quick manual check with grepping.
Change-Id: I91ff102cb528bb00fa2f65489de53890e7e46f2d
Reviewed-on: https://code.wireshark.org/review/15751
Reviewed-by: Michael Mann <mmann78@netscape.net>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Jaap Keuter <jaap.keuter@xs4all.nl>
This doesn't try to use any data from multiple Section Header blocks, it
just converts single Section Header block usage into a GArray, so the
potential is there to then use/support multiple Section Header blocks
within a file format (like pcapng)
Change-Id: I6ad1f7b8daf4b1ad7ba0eb1ecf2e170421505486
Reviewed-on: https://code.wireshark.org/review/15636
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Also add a length parameter to wtap_optionblock_set_option_string
Change-Id: I8c7bbc48aa96b5c2a91ab9a17980928d6894f1ee
Reviewed-on: https://code.wireshark.org/review/15505
Reviewed-by: Anthony Coddington <anthony.coddington@endace.com>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Fix sanity checking overflow in wiretap ERF_TYPE_META parsing segfault.
Fix final tag of exactly 4 bytes not being dissected.
Fix not setting bitfield tag subtree (was working due to proto.c internal behaviour).
Add dissector expertinfo for truncated tags. Dissect type and length on error.
Bug: 12352
Change-Id: I3fe6644f369e4d6f1f64270cb83c8d0f8a1f1a94
Reviewed-on: https://code.wireshark.org/review/15357
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
When the state pointer is NULL it's defensively coded against by a
NULL pointer check. Variable initialization before should then not
dereference that pointer.
Change-Id: I0ed09e2f22be5651324f43fc3fd339d2f95684c0
Reviewed-on: https://code.wireshark.org/review/14776
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
ERF Dissector:
Add dissection for ERF_TYPE_META, Host ID and Flow ID extension headers.
Rename ERF extension header defines to ERF_EXT_HDR* and put in erf.h.
The Flow ID extension header has an improved 32-bit Flow Hash with a Hash Type
field describing what the hash was computed over. The Host ID extension header
contains a 48-bit organizationally unique Host Identifier. Both extension
headers contain the same 8-bit Source ID used for distinguishing records from
multiple sources in the same file and for metadata linking to ERF_TYPE_META
records. Host ID is used to identify the capturing host and can also be used to
distinguish records from multiple hosts in the same file.
ERF_TYPE_META records have a payload consisting of TLV metadata, divided into
sections which define the context of the TLV tag. The dissector registers
a field for each tag for each section type based on a template.
ERF_TYPE_META records generally have a Host ID extension header used to link
metadata to packet records with the same Host ID and Source ID. The associated
Host ID can either be explicit on all records, or implicit where the Host ID
extension header is only present on MetaERF records and other records are
associated using only the Source ID in the Flow ID extension header.
Includes per-record generated Source summary and frame linking. These have the
'correct' Host ID and Source IDs from either extension header, including
applying the Implicit Host ID, and links to the most recent ERF_TYPE_META
record. Relies on Wireshark doing more than one pass to associate the correct
implicit Host ID tree items for records before the first ERF_TYPE_META record.
The metadata is technically not associated at that point anyway.
ERF Wiretap:
Add per-HostID/per-SourceID wtap interfaces and basic ERF_TYPE_META support.
Adds read support for displaying some fields of the 'first'
ERF_TYPE_META record in the Capture File Properties screen. Concatenates
and merges some summary fields to provide more useful information and
attempt to combine ERF sources, streams and interfaces into wtap interfaces.
Interface naming gracefully degrades when Host ID and Source ID are not present
and is intended to be parseable for use by DAG software.
Supports Implicit Host ID, but assumes it does not change.
NOTE: Now only ERF interfaces that are present in the file are added.
Only works with native ERF files for now. Written such that it is easily
adapted for use by pcap dissector.
Some support for setting REC_TYPE_FT_SPECIFIC_REPORT on MetaERF records.
Disabled for now as this breaks pcapng_dump saving of ERF_TYPE_META
and ft_specific_record_phdr clashes with erf_mc_phdr.
Only when native ERF file (as uses wth->file_type_subtype).
Register packet-erf as a dissector of WTAP_FILE_TYPE_SUBTYPE_ERF.
Bug: 12303
Change-Id: I6a697cdc851319595da2852f3a977cef8a42431d
Reviewed-on: https://code.wireshark.org/review/14510
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Michael Mann <mmann78@netscape.net>
This was inspired by https://code.wireshark.org/review/9729/, but takes it in a different direction where all options are put into an array, regardless of whether they are "standard" or "custom". It should be easier to add "custom" options in this design. Some, but not all blocks have been converted.
Descriptions of some of the block options have been moved from wtap.h to pcapng.h as it seems to be the one that implements the description of the blocks.
Also what could be added/refactored is registering block behavior.
Change-Id: I3dffa38f0bb088f98749a4f97a3b7655baa4aa6a
Reviewed-on: https://code.wireshark.org/review/13667
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
The data before the Ethernet packet isn't a 16-bit little-endian
integer, it's two bytes, one byte of offset and one byte of padding.
Change-Id: I327b88f058dda184b79d3c2c6cf0dea52c0d28b1
Reviewed-on: https://code.wireshark.org/review/13254
Reviewed-by: Guy Harris <guy@alum.mit.edu>
That's how they're extracted in the libwiretap module, and that's how
they're shown in the ERF spec.
This gets rid of some compiler warnings about type-punning.
Merge some reserved bit fields to match what's in the ERF spec.
Renumber others.
Process the AAL2 and MC headers differently; yes, they're both
big-endian 32-bit values, but that makes the code a bit clearer, and,
heck, the optimizer may well combine the two sequences of code.
Change-Id: Ief7f976e77e8f2fba1685ad5a50ee677a8070ae7
Reviewed-on: https://code.wireshark.org/review/13251
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Stuff in an ERF file is big-endian, except for timestamps, so we want to
convert from big-endian to host format. (The two functions do the same
thing; this just makes it clearer what we're doing.)
Change-Id: I28e27857dcf299085e8a55747ffd45ad8313789b
Reviewed-on: https://code.wireshark.org/review/13248
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add the TYPE_COLOR_HASH_POS and TYPE_COLOR_HASH_ETH types, note that
type 26 has no #define, mention that types 28 through 31 are reserved
for future record types.
Change-Id: Ic828254599599c6bd7399d4682f9a3d4bff1f0f7
Reviewed-on: https://code.wireshark.org/review/12728
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Update erf_open heuristic to not break when ERF_TYPE_META records are present.
Remove check for maximum non-pad ERF type and add defines for reserved types.
No dissection in this commit beyond record type name, this will come later.
Change-Id: Ib64e450e26b2878b5519fb6afeafa2ce9477ac85
Reviewed-on: https://code.wireshark.org/review/12708
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Guy Harris <guy@alum.mit.edu>
It doesn't actually *close* any handle, so it's best called a "finish"
routine rather than a "close" routine.
In libwiretap modules, don't bother setting the finish routine pointer
to null - it's already initialized to null (it's probably best not to
require modules to set it).
Change-Id: I19554f3fb826db495f17b36600ae36222cbc21b0
Reviewed-on: https://code.wireshark.org/review/11659
Reviewed-by: Guy Harris <guy@alum.mit.edu>
That indicates that it's a problem specific to *writing* capture files;
we've already converted some errors to that style, and added a new one
in that style.
Change-Id: I8268316fd8b1a9e301bf09ae970b4b1fbcb35c9d
Reviewed-on: https://code.wireshark.org/review/5826
Reviewed-by: Guy Harris <guy@alum.mit.edu>
For cases where record (meta)data is something that can't be written out
in a particular file format, return WTAP_ERR_UNWRITABLE_REC_DATA along
with an err_info string.
Report (and free) that err_info string in cases where
WTAP_ERR_UNWRITABLE_REC_DATA is returned.
Clean up some other error reporting cases, and flag with an XXX some
cases where we aren't reporting errors at all, while we're at it.
Change-Id: I91d02093af0d42c24ec4634c2c773b30f3d39ab3
Reviewed-on: https://code.wireshark.org/review/5823
Reviewed-by: Guy Harris <guy@alum.mit.edu>
That makes it clearer what the problem is, and that it should only be
returned by the dump code path, not by the read code path.
Change-Id: I22d407efe3ae9fba7aa25f08f050317549866442
Reviewed-on: https://code.wireshark.org/review/5798
Reviewed-by: Guy Harris <guy@alum.mit.edu>
That makes it clearer what the problem is, and that it should only be
returned by the dump code path, not by the read code path.
Change-Id: Icc5c9cff43be6c073f0467607555fa7138c5d074
Reviewed-on: https://code.wireshark.org/review/5797
Reviewed-by: Guy Harris <guy@alum.mit.edu>
WTAP_ERR_UNSUPPORTED_ENCAP means "I can't *write* that particular
encapsulation type to a file of this format", which mainly means "that
file format simply can't handle packets of that type";
WTAP_ERR_UNSUPPORTED means "this file can't currently be supported by
Wireshark, as there's some feature in the file - such as a file or
per-packet encapsulation type - that we don't (yet) handle".
Change-Id: I53cadf9913d20efb2bccb29f61877b71d53807be
Reviewed-on: https://code.wireshark.org/review/5794
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Clean up some things we ran across while making those changes.
Change-Id: Ic0d8943d36e6e120d7af0a6148fad98015d1e83e
Reviewed-on: https://code.wireshark.org/review/4581
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add wtap_read_bytes(), which takes a FILE_T, a pointer, a byte count, an
error number pointer, and an error string pointer as arguments, and that
treats a short read of any sort, including a read that returns 0 bytes,
as a WTAP_ERR_SHORT_READ error, and that returns the error number and
string through its last two arguments.
Add wtap_read_bytes_or_eof(), which is similar, but that treats a read
that returns 0 bytes as an EOF, supplying an error number of 0 as an EOF
indication.
Use those in file readers; that simplifies the code and makes it less
likely that somebody will fail to supply the error number and error
string on a file read error.
Change-Id: Ia5dba2a6f81151e87b614461349d611cffc16210
Reviewed-on: https://code.wireshark.org/review/4512
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Pcap-ng files don't have a per-file time stamp resolution, they have a
per-interface time stamp resolution. Add new time stamp resolution
types of "unknown" and "per-packet", add the time stamp resolution to
struct wtap_pkthdr, have the libwiretap core initialize it to the
per-file time stamp resolution, and have pcap-ng do the same thing with
the resolution that it does with the packet encapsulation.
Get rid of the TS_PREC_AUTO_XXX values; just have TS_PREC_AUTO, which
means "use the packet's resolution to determine how many significant
digits to display". Rename all the WTAP_FILE_TSPREC_XXX values to
WTAP_TSPREC_XXX, as they're also used for per-packet values.
Change-Id: If9fd8f799b19836a5104aaa0870a951498886c69
Reviewed-on: https://code.wireshark.org/review/4349
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Otherwise, if you link with both libwiretap and libfiletap, it's
anybody's guess which one you get. That means you're wasting memory
with two copies of its routines if they're identical, and means
surprising behavior if they're not (which showed up when I was debugging
a double-free crash - fixing libwiretap's buffer_free() didn't fix the
problem, because Wireshark happened to be calling libfiletap' unfixed
buffer_free()).
There's nothing *tap-specific about Buffers, anyway, so it really
belongs in wsutil.
Change-Id: I91537e46917e91277981f8f3365a2c0873152870
Reviewed-on: https://code.wireshark.org/review/3066
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add a "record type" field to "struct wtap_pkthdr"; currently, it can be
REC_TYPE_PACKET, for a record containing a packet, or
REC_TYPE_FILE_TYPE_SPECIFIC, for records containing file-type-specific
data.
Modify code that reads packets to be able to handle non-packet records,
even if that just means ignoring them.
Rename some routines to indicate that they handle more than just
packets.
We don't yet have any libwiretap code that supplies records other than
REC_TYPE_PACKET or that supporting writing records other than
REC_TYPE_PACKET, or any code to support plugins for handling
REC_TYPE_FILE_TYPE_SPECIFIC records; this is just the first step for bug
8590.
Change-Id: Idb40b78f17c2c3aea72031bcd252abf9bc11c813
Reviewed-on: https://code.wireshark.org/review/1773
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This reverts commit c0c480d08c.
A better way to do this is to have the record type be part of struct wtap_pkthdr; that keeps the metadata for the record together and requires fewer API changes. That is in-progress.
Change-Id: Ic558f163a48e2c6d0df7f55e81a35a5e24b53bc6
Reviewed-on: https://code.wireshark.org/review/1741
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This is the first step towards implementing the mechanisms requestd in
bug 8590; currently, we don't return any records other than packet
records from libwiretap, and just ignore non-packet records in the rest
of Wireshark, but this at least gets the ball rolling.
Change-Id: I34a45b54dd361f69fdad1a758d8ca4f42d67d574
Reviewed-on: https://code.wireshark.org/review/1736
Reviewed-by: Guy Harris <guy@alum.mit.edu>
While investigating an ASAN issue (fixed in
commit dcdd076ab0), I got greatly confused
by three different types having the same "interface_data" field name:
* pcapng_t *pn stores an array of interface_data_t objects.
* wtap *wth stores an array of wtapng_if_descr_t objects.
* pcapng_dump_t should store an array of interface_data_t objects.
pcapng_dump_t and friends are unused since
commit c7f1a431d2, so drop it.
To fix the confusion, rename the interface_data_t type to
interface_info_t type and use the local variable "iface_info"
everywhere. Rename interface_data of pcapng_t to "interfaces" and
add a comment what this exactly means (interfaces listed in the capture
file).
Drop the number_of_interfaces field for interfaces as the array
length is already available from GArray. Now interface_data is always
initialized for wth (which also gets copied to idb).
s/int/guint/g and replace cast at some places.
There are no regressions for the in-tree test suite.
Change-Id: I2d5985c9f1e43f8230dbb4a73bd1e243c4858170
Reviewed-on: https://code.wireshark.org/review/1656
Reviewed-by: Evan Huus <eapache@gmail.com>
Tested-by: Evan Huus <eapache@gmail.com>
Reviewed-by: Michael Mann <mmann78@netscape.net>
This reverts commit 1abeb277f5.
This isn't building, and looks as if it requires significant work to fix.
Change-Id: I622b1bb243e353e874883a302ab419532b7601f2
Reviewed-on: https://code.wireshark.org/review/1568
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Start of refactoring Wiretap and breaking structures down into "generally useful fields for dissection" and "capture specific". Since this in intended as a "base" for Wiretap and Filetap, the "wft" prefix is used for "common" functionality.
The "architectural" changes can be found in cfile.h, wtap.h, wtap-int.h and (new file) wftap-int.h. Most of the other (painstaking) changes were really just the result of compiling those new architecture changes.
bug:9607
Change-Id: Ife858a61760d7a8a03be073546c0e7e582cab2ae
Reviewed-on: https://code.wireshark.org/review/1485
Reviewed-by: Michael Mann <mmann78@netscape.net>
(Using sed : sed -i '/^ \* \$Id\$/,+1 d')
Fix manually some typo (in export_object_dicom.c and crc16-plain.c)
Change-Id: I4c1ae68d1c4afeace8cb195b53c715cf9e1227a8
Reviewed-on: https://code.wireshark.org/review/497
Reviewed-by: Anders Broman <a.broman58@gmail.com>
willing to read or that's bigger than will fit in the file format;
instead, report an error.
For the "I can't write a packet of that type in that file type" error,
report the file type in question.
svn path=/trunk/; revision=54882
subtypes, e.g. Network Monitor version 1 and Network Monitor version 2
are separate "file types", even though they both come from Network
Monitor.
Rename various functions, #defines, and variables appropriately.
svn path=/trunk/; revision=53166
as the "where to put the packet data" argument.
This lets more of the libwiretap code be common between the read and
seek-read code paths, and also allows for more flexibility in the "fill
in the data" path - we can expand the buffer as needed in both cases.
svn path=/trunk/; revision=49949
"ERF record" is very different from, and much simpler than, the case
where it's not; tweak the code to more clearly separate the "we're being
handed ERF records" case from the "we're being handed packets" case.
svn path=/trunk/; revision=46984
wtap_file_read_expected_bytes() from an open routine - open routines are
supposed to return -1 on error, 0 if the file doesn't appear to be a
file of the specified type, or 1 if the file does appear to be a file of
the specified type, but those macros will cause the caller to return
FALSE on errors (so that, even if there's an I/O error, it reports "the
file isn't a file of the specified type" rather than "we got an error
trying to read the file").
When doing reads in an open routine before we've concluded that the file
is probably of the right type, return 0, rather than -1, if we get
WTAP_ERR_SHORT_READ - if we don't have enough data to check whether a
file is of a given type, we should keep trying other types, not give up.
For reads done *after* we've concluded the file is probably of the right
type, if a read doesn't return the number of bytes we asked for, but
returns an error of 0, return WTAP_ERR_SHORT_READ - the file is
apparently cut short.
For NetMon and NetXRay/Windows Sniffer files, use a #define for the
magic number size, and use that for both magic numbers.
svn path=/trunk/; revision=46803
Since we have to 'downconvert' the ERF time stamps to Wireshark's internal
representation anyway, we may as well report the resolution which we convert
to, rather than the original native resolution.
svn path=/trunk/; revision=44800
which could use lseek() and were thus expensive due to system call
overhead. To avoid making a system call for every packet on a
sequential read, we maintained a data_offset field in the wtap structure
for sequential reads.
It's now a routine that just returns information from the FILE_T data
structure, so it's cheap. Use it, rather than maintaining the data_offset
field.
Readers for some file formats need to maintain file offset themselves;
have them do so in their private data structures.
svn path=/trunk/; revision=42423
by Wiretap, to indicate whether certain fields in that structure
actually have data in them.
Use the "time stamp present" flag to omit showing time stamp information
for packets (and "packets") that don't have time stamps; don't bother
working very hard to "fake" a time stamp for data files.
Use the "interface ID present" flag to omit the interface ID for packets
that don't have an interface ID.
We don't use the "captured length, separate from packet length, present"
flag to omit the captured length; that flag might be present but equal
to the packet length, and if you want to know if a packet was cut short
by a snapshot length, comparing the values would be the way to do that.
More work is needed to have wiretap/pcapng.c properly report the flags,
e.g. reporting no time stamp being present for a Simple Packet Block.
svn path=/trunk/; revision=41185
form of corruption/bogosity in a file, including in a file header as
well as in records in the file. Change the error message
wtap_strerror() returns for it to reflect that.
Use it for some file header problems for which it wasn't already being
used - WTAP_ERR_UNSUPPORTED shouldn't be used for that, it should only
be used for files that we have no reason to believe are invalid but that
have a version number we don't know about or some other
non-link-layer-encapsulation-type value we don't know about.
svn path=/trunk/; revision=40175
I found a heap-based buffer overflow, when parsing ERF file format.
The overflow seems to be controlled by the values read from the file,
and hence seems exploitable to me.
svn path=/trunk/; revision=39508
Allows the saving of packets with snapped length to ERF. Prevents the adding of
automatic CRC and rounds down to the nearest 8 bytes instead of up, adding
zeros.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6409
svn path=/trunk/; revision=39247
same.
Add to wiretap/pcap-common.c a routine to fill in the pseudo-header for
ATM (by looking at the VPI, VCI, and packet data, and guessing) and
Ethernet (setting the FCS length appropriately). Use it for both pcap
and pcap-ng files.
svn path=/trunk/; revision=38840
know it'll fit in a gint16. (alignbytes really shouldn't need to be 64
bits, as if we have 2^63-1 bytes of alignment, We Have A Problem; fixing
that may involve calculating it differently earlier in that routine.)
svn path=/trunk/; revision=38828
by the gunzipping code. Have it also supply a err_info string, and
report it. Have file_error() supply an err_info string.
Put "the file" - or, for WTAP_ERR_DECOMPRESS, "the compressed file", to
suggest a decompression error - into the rawshark and tshark errors,
along the lines of what other programs print.
Fix a case in the Netscaler code where we weren't fetching the error
code on a read failure.
svn path=/trunk/; revision=36748
file_read(buf, bsize, count, file) macro is compilant with fread
function and takes elements count+ size of each element, however to make
it compilant with gzread() it always returns number of bytes.
In wiretap file_read() this is not really used, file_read is called
either with bsize set to 1 or count to 1.
Attached patch remove bsize argument from macro.
svn path=/trunk/; revision=36491
ERF files can contain records of type TYPE_PAD. These records are not related
to captured packets, have a zero timestamp value and no associated packet data.
Normally TYPE_PAD records are stripped out during capture, but in rare cases
unstripped files may exist.
Previously wiretap/erf.c generated an 'unknown record encapsulation' error when
encountering TYPE_PAD records.
With this patch Wireshark skips over any TYPE_PAD records within ERF traces
files without reporting an error. TYPE_PAD records are not counted, displayed
or decoded.
svn path=/trunk/; revision=25733
This plugin implements a dissector for Infiniband. It is released
under the GPL v2.
Rather than using say libpcap to capture raw (unframed) IP packets
from near the top of an IPoIB stack, this plugin dissects link level
Infiniband frames.
Infiniband trace files can be read from Endace ERF format trace
files, or from libpcap DLT_ERF files containing ERF TYPE_INFINIBAND
records. There is currently no native DLT_INFINIBAND in libpcap.
Each record contains a hardware timestamp, capture metadata such as
port Id, and a complete link level Infiniband frame starting from
the Local Route Header.
svn path=/trunk/; revision=24628
otherwise use as the per-packet encapsulation.
The close routine does nothing; get rid of it - you don't *need* a close
routine (by default, the subtype_close pointer is null, which means that
nothing per-file-type is done when the file is closed).
Make the code to handle the length fields in the ERF header common,
rather than copying it to each group of record types.
svn path=/trunk/; revision=24053
fix http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1727 (pppd format file
incorrectly detected as being an ERF file) by:
The file_seek() call has been replaced by a call to file_read(), so, when the
end of the file is reached and the current record is truncated, we have got an
error.
This solves the problem of bad file format detection.
Additionaly, the ERF heuristic has been improved.
svn path=/trunk/; revision=24051
This is a replacement of the existing decoding of ERF files (Extensible Record
Format from Endace).
For the decoding of the ERF files, according to the "type of record" given in
the ERF header, several decoders can be used. Up to now, the decoder is
determined according to an environment variable, or with a kind of heuristic.
And, all the treatment is done during the file extraction.
The new architecture, will separate the ERF file decoding, and the ERF record
decoding. The ERF records will be decoded with a specific dissector. This
dissector can be configured with options, to replace the environment variable.
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1839
svn path=/trunk/; revision=23092
The code for reading ERF files has not been significantly
updated since 2004. This patch brings it up to date with a
number of changes.
1) Increase number of decodable ERF types from 7 to 12. This
covers newer DAG card models and firmware updates.
2) Fix timestamp conversion. Was calculating only microsecond
precision, now displaying with nanosecond resolution. Hardware
precision is 7.5 to 30 ns depending on model.
3) Allow the user to specify HDLC encapsulation as 'chdlc',
'ppp_serial', 'frelay' or 'mtp2'. This is needed because the
ERF HDLC capture formats do not include information on what
protocol is used at the next level. This is currently done via
an environment variable 'ERF_HDLC_ENCAP' and is analagous to the
existing 'ERF_ATM_ENCAP' variable.
If the user does not specify an HDLC encapsulation it tries to
guess, and falls back to MTP2 for backwards compatibility with
Florent's existing behaviour.
I know environment variables are ugly, suggestions are welcome.
4) When reading HDLC captures as MTP2, use
WTAP_ENCAP_MTP2_WITH_PHDR rather than WTAP_ENCAP_MTP2. This
allows us to put the 'Multi-Channel ERF' record 'channel
number' field into the MTP2 pseudo header > 'link_number'
field. This is then displayed in Frame information, and can
be filtered on. (Would be nice if it could be made a display
column?)
Because the ERF record does not specify whether Annex A is used
or not, we pass MTP2_ANNEX_A_USED_UNKNOWN and allow the existing
user preference to decide.
Move the MTP2_ANNEX_A_ definitions into Wiretap, make the annex_a_used
field a guint8, and change MTP2_ANNEX_A_USED_UNKNOWN to 2 so it fits in
a guint8. (This means that if you can save an ERF MTP2 file as a
libpcap file, the pseudo-header will have MTP2_ANNEX_A_USED_UNKNOWN in
it.)
svn path=/trunk/; revision=22067
This patch consists also the last issues. Additionally it solves:
- For the SSCOP frames the AAL5 decoding was not performed due to an earlier patch. This caused that no SSCOP message was properly decoded.
- As the detection between a LANE frame and a SSCOP frame is rather hard a switch within the atm dissector is included which enforce SSCOP dissecting over a LANE frame. At the moment I do not see a better solution for that.
svn path=/trunk/; revision=20013
Guy Harris