Add a "contained length" to tvbuffs. For non-subset tvbuffs, that's the
same as the reported length. For a subset tvbuff, that's the amount of
the reported data that was actually present in the "contained data" of
the parent tvbuff.
This is unaffected by the *captured* length of any tvbuff; that differs
from the contained length only if the capture was cut short by a
snapshot length.
If a reference is within the reported data, but not within the contained
data, a ContainedBoundsError exception is thrown. This exception
represents a protocol error, rather than a reference past the captured
data in the packet; we treat it as such.
Change-Id: Ide87f81238eaeb89b3093f54a87bf7f715485af5
Reviewed-on: https://code.wireshark.org/review/27039
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add 8-bit, 16-bit, 24-bit, and 32-bit "fetch signed value" routines, and
use them rather than casting the result of the 8/16/24/32-bit "fetch
unsigned value" routines to a signed type (which, BTW, isn't sufficient
for 24-bit values, so this appears to fix a bug
in epan/dissectors/packet-zbee-zcl.c).
Use numbers rather than sizeof()s in various tvb_get_ routines.
Change-Id: I0e48a57fac9f70fe42de815c3fa915f1592548bd
Reviewed-on: https://code.wireshark.org/review/26844
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Get rid of CMake's TestBigEndian and Autotools' AC_C_BIGENDIAN checks in
favor of G_BYTE_ORDER. We use G_BYTE_ORDER elsewhere and TestBigEndian
is noticeably slow on Windows.
Change-Id: Idc1326294db9cbee8f6b6b11c2028fc4d19acbf0
Reviewed-on: https://code.wireshark.org/review/26462
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Used to support variable length in QUIC protocol
Bug: 13881
Change-Id: Ia274b1530152376c5fb4e364fc4cf5ab246be1b3
Reviewed-on: https://code.wireshark.org/review/24990
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Craig Jackson <cejackson51@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
That allows a parallel typedef of ws_in4_addr for guint32.
Change-Id: I03b230247065e0e3840eb87635315a8e523ef562
Reviewed-on: https://code.wireshark.org/review/24073
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Make the description simpler than the code (hopefully).
Change-Id: Iaede1a6eb18e25e379b719f9b66ecbef0c00ea63
Reviewed-on: https://code.wireshark.org/review/20956
Reviewed-by: Martin Kaiser <wireshark@kaiser.cx>
Petri-Dish: Martin Kaiser <wireshark@kaiser.cx>
Reviewed-by: Michael Mann <mmann78@netscape.net>
All cases of the "original" format_text have been handled to add the
proper wmem allocator scope. Remove the "original" format_text
and replace it with one that has a wmem allocator as a parameter.
Change-Id: I278b93bcb4a17ff396413b75cd332f5fc2666719
Reviewed-on: https://code.wireshark.org/review/19884
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
It's only use is in dissectors or other tree creation APIs (where
packet scope is valid), so have it use format_text_wmem with
wmem_packet_scope().
Change-Id: I1f34e284a870c9844c6b27f4ae08a1e7efe54098
Reviewed-on: https://code.wireshark.org/review/19883
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>
It's only use is in dissectors, so have it use
format_text_wmem with wmem_packet_scope().
Change-Id: I22121324fd47aee32174b65104458ad2ef329bd7
Reviewed-on: https://code.wireshark.org/review/19856
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
format_text_wsp is fed into by tvb_format_text_wsp and tvb_format_stringzpad_wsp
so those functions need to add a wmem allocated parameter as well.
Most of the changes came from tvb_format_text_wsp and tvb_format_stringzpad_wsp
being changed more so than format_text_wsp.
Change-Id: I52214ca107016f0e96371a9a8430aa89336f91d7
Reviewed-on: https://code.wireshark.org/review/19851
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Hex digits 0xa through 0xe are '*', '#', 'a', 'b', and 'c',
respectively.
Constify the dgt_set_t argument to tvb_bcd_dig_to_wmem_packet_str(),
while we're at it.
Bug: 13316
Change-Id: I7586f35d23fd262453779d99946e7ccad4b6ffab
Reviewed-on: https://code.wireshark.org/review/19620
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This emphasizes that there is no such thing as *the* routine to
construct a subset tvbuff; you need to choose one of
tvb_new_subset_remaining() (if you want a new tvbuff that contains
everything past a certain point in an existing tvbuff),
tvb_new_subset_length() (if you want a subset that contains everything
past a certain point, for some number of bytes, in an existing tvbuff),
and tvb_new_subset_length_caplen() (for all other cases).
Many of the calls to tvb_new_subset_length_caplen() should really be
calling one of the other routines; that's the next step. (This also
makes it easier to find the calls that need fixing.)
Change-Id: Ieb3d676d8cda535451c119487d7cd3b559221f2b
Reviewed-on: https://code.wireshark.org/review/19597
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Those routines can handle any single-byte character set whose characters
map to characters in the Basic Multilingual Plane; it could be used for
extended ASCII, but we have another routine for that, mapping only
characters with code points > 0x7f, so we just say "nonascii" rather
than "ebcdic".
Change-Id: I3d55b5d58e3e7ab08f3dfbfdb57a0301a30e71d4
Reviewed-on: https://code.wireshark.org/review/19214
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Have a routine that takes a 256-element translation table and uses it to
map various flavors of EBCDIC to Unicode. Have separate translation
tables for "common" EBCDIC (everything that's the same in all EBCDIC
code pages that include the original EBCDIC characters) and EBCDIC code
page 037. Add ENC_EBCDIC_CP037 for code page 037.
Change-Id: Ia882b3c0abef9e30eb54cd47396e6fa0d6342044
Reviewed-on: https://code.wireshark.org/review/19212
Reviewed-by: Guy Harris <guy@alum.mit.edu>
start_offset(offset) and the while loop should be on searched_bytes.
Change-Id: I62343f7cb04f9110f773ba1ada8dbcbfbd262861
Reviewed-on: https://code.wireshark.org/review/18741
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Bug: 13032
Change-Id: I6bf2cc2c43a6262d899a304df6576d9831115966
Reviewed-on: https://code.wireshark.org/review/18350
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
And some comments in the case where we're converting the result of
time() - if your machine's idea of time predates January 1, 1970,
00:00:00 UTC, it'll crash on Windows, but that's not a case where a
*file* can cause the problem due either to a bad file time stamp or bad
time stamps in the file.
Change-Id: I837a438e4b875dd8c4f3ec2137df7a16ee4e9498
Reviewed-on: https://code.wireshark.org/review/18369
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Change-Id: I75c0165948325c2e50918706d8a821411761727b
Signed-off-by: Francesco Fondelli <francesco.fondelli@gmail.com>
Reviewed-on: https://code.wireshark.org/review/17734
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Coverity rightfully complains about inproper use of negative value.
maxlength special value '-1' should be handled appropriately.
Change-Id: Ie1818121e39fa668094d012980016444ca868e6e
Reviewed-on: https://code.wireshark.org/review/13978
Reviewed-by: João Valverde <j@v6e.pt>
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Found building with GCC 5.3.0 and CFLAGS="-g -Og".
Change-Id: I5bc29b6e91cc98332a513c9d03b02d2f6906608d
Reviewed-on: https://code.wireshark.org/review/13362
Reviewed-by: João Valverde <j@v6e.pt>
Petri-Dish: João Valverde <j@v6e.pt>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
That's what my_dgt_tbcd_unpack() did; do the same thing here.
Change-Id: Ia68c6ba652c748bd2661fd6eda736e880f414dc5
Reviewed-on: https://code.wireshark.org/review/12359
Reviewed-by: Guy Harris <guy@alum.mit.edu>
length set to datalen in the returned tvb.
Change-Id: Ie6649a285a9fa4a0564e29ce18ec9459b8da2541
Reviewed-on: https://code.wireshark.org/review/9861
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Routines that don't take a tvbuff as an argument shouldn't have tvb_ in
the name.
Change-Id: I3550256551e30b3f329cbbfca71ef27c727d29c0
Reviewed-on: https://code.wireshark.org/review/7302
Reviewed-by: Guy Harris <guy@alum.mit.edu>
There is no guarantee that a g_malloc'ed memory block will be aligned on a 128 bits boundary
Instead use a static variable definition (at the cost of exposing the HAVE_SSE4_2 compilation flag in ws_mempbrk.h)
Change-Id: I661bf479a9d458d64c96bafc940c519d29a4780b
Reviewed-on: https://code.wireshark.org/review/7070
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
This combines the SSE4.2 instructions usage, with pre-compiled
pattern searching usage, for a faster pbrk search method.
Testing against large files of HTTP and SIP, there is about
a 5% performance improvement by using pre-"compiled" patterns
for guint8_pbrk() instead of passing it the search string and
having it build the match array every time.
Similar to regular expressions, "compiling" the pattern match array
in advance only once and using the "compiled" patterns for
the searches is faster than compiling it every time.
Change-Id: Ifcbc14a6c93f32d15663a10d974bacdca5119a8e
Ping-Bug: 10798
Reviewed-on: https://code.wireshark.org/review/6990
Petri-Dish: Hadriel Kaplan <hadrielk@yahoo.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Change-Id: I79c613cbdd8dc939dd4c29ebc477fb6eefd5bfc4
Reviewed-on: https://code.wireshark.org/review/6371
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 change bytestring_to_str to match bytes_to_ep_str_punct functionality (limiting byte string size)
Change-Id: Idb958c7f0c203d103629469302b81fa922714f7e
Reviewed-on: https://code.wireshark.org/review/6369
Reviewed-by: Michael Mann <mmann78@netscape.net>
Changed all remaining code in wslua that was using emem, to use wmem or
simpler methods.
Bug: 9927
Change-Id: I3d19a770e0fd77d996bdb6b61a76a722cc2bcd55
Reviewed-on: https://code.wireshark.org/review/6109
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Hadriel Kaplan <hadrielk@yahoo.com>
Petri-Dish: Hadriel Kaplan <hadrielk@yahoo.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
e.g. tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN)
Change-Id: Iea02fd59b13678aca741d028fb1f66f334447498
Reviewed-on: https://code.wireshark.org/review/6191
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: Evan Huus <eapache@gmail.com>
Also add an assertion to tvb_generic_clone_offset_len so that it throws an
error *before* allocating memory, as otherwise that memory is leaked.
Bug: 10474
Change-Id: I5036cefac16841914a59670c64979cf599bf7969
Reviewed-on: https://code.wireshark.org/review/4234
Petri-Dish: Evan Huus <eapache@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Evan Huus <eapache@gmail.com>
If the length is 0, there's nothing to copy, so it doesn't matter if
there's no data to copy from. This fixes problems caused by allocating
a zero-length buffer and using that as the data for a tvbuff; the
allocation returns null, so the data pointer is null.
Change-Id: I8037ae4b96d30e90a716852bb7e22d3980444f83
Reviewed-on: https://code.wireshark.org/review/3761
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This lets us blow up with oversized 64-bit length values, before casting
them to the 31-bit lengths we can actually handle in Wireshark, rather
than blindly casting them with weird results.
Use that in the MySQL dissector, and, if we get past the test, cast the
lengths to int to squelch warnings.
Change-Id: I3a5e9bd0027fa4ddcb9622f77952dba8f6b23c27
Reviewed-on: https://code.wireshark.org/review/3362
Reviewed-by: Guy Harris <guy@alum.mit.edu>
- compute_offset_and_remaining(...) is a little bit faster than
check_offset_length(.., .length_val = -1);
- tvb_find_guint8(), tvb_pbrk_guint8() - both function are limiting data to
MIN((unsigned) maxlength, tvb_len) - do the same with less count of ifs.
Change-Id: I7761d77b6282d800eea94852d5c6543aef4bc7ca
Reviewed-on: https://code.wireshark.org/review/2829
Reviewed-by: Anders Broman <a.broman58@gmail.com>
With autotools, CMake, and nmake, if we have a function, #define
HAVE_{function_name_in_all_caps}, otherwise don't #define it.
If we provide our own version of a function in libwsutil, make sure we
have a header that declares it, and *ONLY* include that header if
HAVE_{function_name_in_all_caps} is *NOT* defined, so that we don't have
the system declaration and our declaration colliding.
Check for inet_aton, strncasecmp, and strptime with CMake, just as we do
with autotools.
Simplify the addition of {function_name_in_all_caps}_LO to libwsutil in
autotools.
Change-Id: Id5be5c73f79f81919a3a865324e400eca7b88889
Reviewed-on: https://code.wireshark.org/review/2903
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This reverts commit b136182ad4
This function are already marked inline, and profiler don't show much difference in performance,
revert as previous version is cleaner.
Change-Id: I1ac2c30a91b46278730ceee127efa086c7fbc6d6
Reviewed-on: https://code.wireshark.org/review/2828
Reviewed-by: Anders Broman <a.broman58@gmail.com>
In text protocols, like SIP, lot of time is spend guint8_pbrk(),
assume that text is not binary (no NULs), and use SSE4.2 pcmpistri
instruction.
Also move & rename guint8_pbrk() from tvbuff.c as _ws_mempbrk.
HAVE_SSE42 must be defined to use _ws_mempbrk_sse42() only activaded for
Windows currently.
Change-Id: Ic853d84805bdb6492c4f45d2bcc79a973fd9804e
Reviewed-on: https://code.wireshark.org/review/1730
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Use it in epan/tvbuff.c.
Do some other cleanups while we're at it.
Change-Id: I7aed37a568373b896aacfd23f986d445b58b77b7
Reviewed-on: https://code.wireshark.org/review/1342
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This moves a bunch of character set knowledge into epan/charsets.c.
Change-Id: Ieb79dcaac9753c77703af756b666ad2ca9385d9e
Reviewed-on: https://code.wireshark.org/review/1339
Reviewed-by: Guy Harris <guy@alum.mit.edu>
charsets.c is already place with huge number of conversion tables.
Also make gsm_default_alphabet gunichar2, all values fits in 2 bytes.
Change-Id: Ia5ab6c176b4fec21ec76b06513c1d00794ba10ef
Reviewed-on: https://code.wireshark.org/review/1328
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Also do little cleanup in mktime_utc (one big #ifndef)
Change-Id: I8f721ba76cad856cfef0a2d78e7f98686f8e4e3f
Reviewed-on: https://code.wireshark.org/review/1327
Reviewed-by: Anders Broman <a.broman58@gmail.com>
g867a1827e7dc88896ee27a107eb35c4b3973d270 introduced a change to cleanup/fix
handling of bounds checks for -1 length fields, but it ended up guaranteeing a
throw for 0-length tvbs, which isn't good; we ought to be able to add 0-length
FT_PROTOCOL items at the very least.
Better names for the function than _cheat are welcome, but I want to shut up the
buildbot.
Change-Id: I24610f947d03dac32766e2a0ffa0ff7bcc74c3e8
Reviewed-on: https://code.wireshark.org/review/1303
Reviewed-by: Evan Huus <eapache@gmail.com>
Guy Harris