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Move common #defines to erf_record.h
Add macro for erf_interface_id_from_flags()
Fix duplicate proto fields
Replace int with gboolean
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The Endace ERF format has extended the 'Interface Id' from 2 bits (interface 0-3) to 3 bits (interface 0-7).
The Interface Id high order bit is not adjacent in the flags field.
Extend wtap handling for ERF records.
Extend epan dissection and display of ERF format.
The existing erf.flags.cap field is retained and extended to 0-7.
A new erf.flags.if_raw field is added for the unformatted value.
Note proto_tree_add_split_bits_item_ret_val() cannot be used here because it only supports input from the tvb and not from a non-tvb value.
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For writing capture files, increment `wdh->bytes_dumped` within
`wtap_dump_file_write()` so the caller doesn't have to manually track
it. Fixes the most common case of writing a file in sequence, leaving
the code clearer.
A small number of file formats effectively leave the header blank, write
the packets, then seek back up to the header to fill it in. In such
cases, save `wdh->bytes_dumped` before filling in the header and restore
it once done, so the value doesn't double-count the size of the header.
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That indicates that it's a *per-file* encapsulation, not just some
unspecified type of encapsulation such as per-packet or per-interface.
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ERF either has no single file encapsulation or always uses "ERF record"
encapsulation, depending on how you want to think about it. Don't use
wdh->encap as the packet encapsution, always use
rec->rec_header.packet_header.pkt_encap.
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Give several specs, in chronological order, including older specs from
the Wayback Machine. Label them all with a version indication.
Note that version 16 - which we haven't found online, even on the
Wayback Machine - has descriptions of records for no-longer-supported
DAG cards.
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Use macros from inttypes.h.
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Use macros from inttypes.h with format strings.
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The Ubuntu build commented on some spelling errors in executable code
files. Fix the errors that don't come from external files containing
the spelling errors (USB product and vendor IDs, PCI IDs, ASN.1
specifications), and fix some errors that don't show up in the
executable code files (e.g., in comments and variable names).
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Without that, you could add a comment to a record in a file format the
reading code for which doesn't allocate blocks, but the comment doesn't
get saved, as there's no block in which to save the comment option.
This simplifies some code paths, as we're either using the record's
modified block or we're using the block as read from the file, there's
no third possibility.
If we attempt to read a record, and we get an error, and a block was
allocated for the record, unreference it, so the individual file readers
don't have to worry about it.
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Although the value stored to 'tagtotallength' is used in the enclosing expression, the value is never actually read from 'tagtotallength'
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We free it, but what wtap_block_get_nth_string_option_value() returns is
what's stored in the block, and it might get freed up out from under us.
Save a copy of it, so that when we free it, we're not double-freeing.
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Spell out "DESCRIPTION" for the IDB description option, as it's spelled
out in the pcapng spec.
Put the #defines for various options in the same order as the block
types for them are in the pcapng spec.
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"User" sounds as if the blocks belong to the user; at most, the current
user might have modified them directly, but they might also have, for
example, run a Lua script that, unknown to them, modified comments.
Also, a file might have "user comments" added by a previous user, who
them wrote the file and and provided it to the current user.
"Modified" seems a bit clearer than "changed".
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Mostly functioning proof of concept for #14329. This work is intended to
allow Wireshark to support multiple packet comments per packet.
Uses and expands upon the `wtap_block` API in `wiretap/wtap_opttypes.h`.
It attaches a `wtap_block` structure to `wtap_rec` in place of its
current `opt_comment` and `packet_verdict` members to hold OPT_COMMENT
and OPT_PKT_VERDICT option values.
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Have the routine it calls return a Boolean value, with "true" meaning
"keep going" and "false" meaning "stop iterating and return a failure
indication". If the callback routine never returns "false", the routine
returns "true" as a success indication.
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It's not that Wireshark only supports one copy of some block options,
it's that *the pcapng specification* only supports one instance of some
block options, and it's not that wtap_block_set_*_value() fails on
non-string values, it's that the set_XXX_option_value routines currently
only support changing the value of an existing option, not adding a new
instance of an option - the latter requires the add_XXX_option_value
routine.
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Have them take error code and error information string arguments and,
for various failures, fill them in as "internal error" indications.
Check their return codes to see if they got an error.
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Don't assume the default is correct, because there's no guarantee of
that - in fact, there's currently a guarantee that it's not, as it's
initialized to 0, which is WTAP_TSPREC_SECS.
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Make the variable into which we put the return value of
wtap_block_get_nth_string_option_value() a wtap_opttype_return_val, as
that's the type of the return value - it's not a boolean, it's a status
code with multiple values.
Explicitly check that value against WTAP_OPTTYPE_SUCCESS. Yes,
WTAP_OPTTYPE_SUCCESS is 0, so
if (xxx)
is equivalent to
if (xxx != WTAP_OPTTYPE_SUCCESS)
but it's better to make it explict, so it's clear that it's checking for
failure.
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Just say "(Unknown application) <version>".
This also means that we don't leak the app_version string if there's no
app_name string.
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Make various _dump_can_write_encap and _dump_open routines static. Add a
couple of casts.
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g_memdup() was deprecated and replaced with g_memdup2() in GLib 2.68,
we provide our own copy of g_memdup2() for older GLib versions.
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It only registers one file type/subtype, so rename it to
wtap_register_file_type_subtype().
That will also force plugins to be recompiled; that will produce compile
errors for some plugins that didn't change to match the new contents of
the file_type_subtype_info structure.
Also check to make sure that the registered file type/subtype supports
at least one type of block; a file type/subtype that doesn't return
*any* blocks and doesn't permit *any* block types to be written is not
very useful. That should also catch most if not all other plugins that
didn't change to match the new contents of the file_type_subtype_info
structure.
Don't make errors registering a file type/subtype fatal; just complain,
don't register the bogus file type/subtype, and drive on.
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Instead of a "supports name resolution" Boolean and bitflags for types of
comments supported, provide a list of block types that the file
type/subtype supports, with each block type having a list of options
supported. Indicate whether "supported" means "one instance" or
"multiple instances".
"Supports" doesn't just mean "can be written", it also means "could be
read".
Rename WTAP_BLOCK_IF_DESCRIPTION to WTAP_BLOCK_IF_ID_AND_INFO, to
indicate that it provides, in addition to information about the
interface, an ID (implicitly, in pcapng files, by its ordinal number)
that is associated with every packet in the file. Emphasize that in
comments - just because your capture file format can list the interfaces
on which a capture was done, that doesn't mean it supports this; it
doesn't do so if the file doesn't indicate, for every packet, on which
of those interfaces it was captured (I'm looking at *you*, Microsoft
Network Monitor...).
Use APIs to query that information to do what the "does this file
type/subtype support name resolution information", "does this file
type/subtype support all of these comment types", and "does this file
type/subtype support - and require - interface IDs" APIs did.
Provide backwards compatibility for Lua.
This allows us to eliminate the WTAP_FILE_TYPE_SUBTYPE_ values for IBM's
iptrace; do so.
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Eliminate WTAP_FILE_TYPE_SUBTYPE_ERF and
WTAP_FILE_TYPE_SUBTYPE_SYSTEMD_JOURNAL - instead, fetch the values by
name, using wtap_name_to_file_type_subtype().
This requires that wtap_init() be called before epan_init(); that's
currently the case, but put in comments to indicate why it must continue
to be the case.
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Remove NG from the names - it adds nothing.
Don't use the abbreviations for pcapng block names, spell out what the
block does (e.g. "WTAP_BLOCK_DECRYPTION_SECRETS" rather than
"WTAP_BLOCK_DSB"), to make it more obvious what the block does.
Spell out some other abbreviations.
Add WTAP_BLOCK_PACKET for future use for packet blocks; there's no need
to distinguish between the Enhanced Packet Block, the Simple Packet
Block, and the deprecated Packet Block here.
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Change the data structure for that option to have a type field,
indicating that it's either a pcap filter string or a BPF program,
followed by a union with a string-pointer member for pcap filter strings
and an instruction-count-and-pointer-to-instructions structure for BPF
programs.
Have routines to add, set, and fetch that option that handle that
structure; discard the "generic structured option" routines. That means
there's more type checking possible at compile time.
Add more code to handle BPF programs.
When writing pcapng files, check, both for that option and for string
options, whether the option length is too big for the data to fit in a
pcapng option, and don't write it if it is. (XXX - truncate the data?
Report an error?)
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"Custom", as in "requires custom handling of the option data, collides
with "custom", as in pcapng custom options.
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Adds a pre-commit hook for detecting and replacing
occurrences of `g_malloc()` and `wmem_alloc()` with
`g_new()` and `wmem_new()`, to improve the
readability of Wireshark's code, and
occurrences of
`g_malloc(sizeof(struct myobj) * foo)`
with
`g_new(struct myobj, foo)`
to prevent integer overflows
Also fixes all existing occurrences across
the codebase.
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It's possible for memcpy's source and destination
to be the same address, and so therefore
'overlap'. Use memmove instead, which
is safe for overlapping regions.
This fixes Coverity 1450802.
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That way, users won't just see "You got an internal error", the details
will be given, so they can report them in a bug.
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Switch from bugs.wireshark.org to the GitLab issues list.
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The erf_dump function in erf.c keeps the header intact and
ignores the adjusted time.
This adds a section for checking if the timestamp is changed
and updating the header accordingly.
Bug: 16578
Change-Id: I14468a302e746c7a84cf5619b73b94850142d930
Reviewed-on: https://code.wireshark.org/review/37301
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
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wiretap/erf_record.h has declarations for records in ERF files and in
LINKTYPE_ERF packets in pcap and pcapng files.
wiretap/erf-common.h has declarations of routines to be called by
pcap/pcapng reader code when processing LINKTYPE_ERF packets.
wiretap/erf.h is what's left, for use by wiretap/erf.c and the code with
the tables of file readers and writers.
Change-Id: Ia982e79b14a025a80dcbc7c812fb3b2cdb9c6aaa
Reviewed-on: https://code.wireshark.org/review/37021
Petri-Dish: Guy Harris <gharris@sonic.net>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <gharris@sonic.net>
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I guess the "replace" part of "TODO: Replace uses in pcapng and pcap
with erf_read_header() and/or erf_populate_interface_from_header() and
delete." has been done, so we do the "delete" part.
Change-Id: Icd691aa8c3defdd68c306ad9eaf1379a8ba6ec0f
Reviewed-on: https://code.wireshark.org/review/37020
Petri-Dish: Guy Harris <gharris@sonic.net>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <gharris@sonic.net>
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Change-Id: I0a2e09bc3d1a858a304ded0c42be6bf09034812e
Reviewed-on: https://code.wireshark.org/review/37019
Petri-Dish: Guy Harris <gharris@sonic.net>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <gharris@sonic.net>
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Change-Id: Id74764242ba13fb4ed58299a475096a64e5c6b5b
Reviewed-on: https://code.wireshark.org/review/36838
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
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Use g_get_real_time() to get real time because GTimeVal and g_get_current_time()
was deprecated in glib 2.62.
Change-Id: I78fee34e2f5b634c91c6420b01915cfc070f38a4
Reviewed-on: https://code.wireshark.org/review/34468
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
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Fall back on the Wayback Machine for some links.
Change-Id: I6a44a2caaeb4fa521c2f08196e7c36069e3bb842
Reviewed-on: https://code.wireshark.org/review/34103
Reviewed-by: Guy Harris <guy@alum.mit.edu>
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Change all wireshark.org URLs to use https.
Fix some broken links while we're at it.
Change-Id: I161bf8eeca43b8027605acea666032da86f5ea1c
Reviewed-on: https://code.wireshark.org/review/34089
Reviewed-by: Guy Harris <guy@alum.mit.edu>
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That makes it - and the routines that implement it - work more like the
seek-read routine.
Change-Id: I0cace2d0e4c9ebfc21ac98fd1af1ec70f60a240d
Reviewed-on: https://code.wireshark.org/review/32727
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <guy@alum.mit.edu>
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That's what they are, and that's how other code in erf_open() treats
them; just use assignment to initialize prevts and to set prevts to ts.
Maybe this will keep the Clang static analyzer from calling prevts a
garbage value when compared with ts.
Change-Id: I2ee2376ced5c3efa6beab34276009a3177c94416
Reviewed-on: https://code.wireshark.org/review/32455
Reviewed-by: Guy Harris <guy@alum.mit.edu>
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The memory ownership of wtap_rec::opt_comment was not clear. Users of
wtap were leaking memory (editcap.c). wtap readers were not sure about
freeing old comments (erf) or simply ignored memleaks (pcapng).
To fix this, ensure opt_comment is owned by wtap_rec and free it with
wtap_rec_cleanup. The erf issue was already addressed since
cf_get_packet_comment properly duplicates wth.opt_comment memory.
- wtap file formats (readers):
- Should allocate memory for new comments.
- Should free a comment from an earlier read before writing a new one.
- Users of wth:
- Can only assume that opt_comment remains valid until the next read.
- Can assume that wtap_dump does not modify the comment.
- For random access (wtap_seek_read): should call wtap_rec_cleanup
to free the comment.
The test_tshark_z_expert_comment and test_text2pcap_sip_pcapng tests now
pass when built with ASAN.
This change was created by carefully looking at all users opt
"opt_comment" and cf_get_packet_comment. Thanks to Vasil Velichkov for
an initial patch which helped validating this version.
Bug: 7515
Change-Id: If3152d1391e7e0d9860f04f3bc2ec41a1f6cc54b
Reviewed-on: https://code.wireshark.org/review/31713
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Vasil Velichkov <vvvelichkov@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
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Allow forward timestamp deltas up to 1 year, up from 7 days.
Surprisingly this was overly restrictive in some real cases.
Change-Id: I8a4bd1ca791b978aa5d2be40f7f8dd8e23db8837
Reviewed-on: https://code.wireshark.org/review/28882
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
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