"data source" has a name and a top-level tvbuff, and frames can have a
list of data sources associated with them.
Use the tvbuff pointer to determine which data source is the data source
for a given field; this means we don't have to worry about multiple data
sources with the same name - the only thing the name does is label the
notebook tab for the display of the data source, and label the hex dump
of the data source in print/Tethereal output.
Clean up a bunch of things discovered in the process of doing the above.
svn path=/trunk/; revision=4749
tvb_length_remaining() except that it throws BoundsError if 'offset'
is out-of-bounds.
Allow a length argument of -1 for FT_STRING and FT_BYTES fields
in proto_tree_add_item().
Change some dissectors to either use -1 for the length argument in
calls to proto_tree_add_item(), or call tvb_ensure_length_remaining()
instead of tvb_length_remaining(), or to check the return-value
of tvb_length_remaining(). Changes to more dissectors are necessary,
but will follow later.
svn path=/trunk/; revision=4656
structure, the check for a null tvbuff pointer in "alloc_field_info()",
and the "tvb_create_from_top()" macro; they're no longer needed, as
there's no non-tvbuffified dissector code remaining.
svn path=/trunk/; revision=4205
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
former depends on having "guint64" and the latter depends on
"%ll[douxX]" being what's used to print 64-bit integers, and there are
platforms on which Etheeal runs that don't have "guint64" or that don't
use "%ll[douxX]" to print 64-bit integers.
Get rid of the routines to extract 64-bit integers into "gint64"s and
"guint64"s, as per Ronnie Sahlberg's suggestion, to discourage people
from writing code that won't work on all platforms; they should be using
FT_UINT64, or the routines in "int-64bit.c", instead.
svn path=/trunk/; revision=4102
there were 2 functions which accepted 'maxlength' == -1, but the function
prototypes had maxlength as a guint --- fixed.
svn path=/trunk/; revision=4087
Tvbuffers changed to added the data source name,
GUI and printing code changed to support these changes
and display the multiple hex views.
svn path=/trunk/; revision=3165
Change them to use facilities in Ethereal that were probably not present
when they were originally written, e.g. routines to fetch 24-bit
integers and to dump a bunch of raw bytes in hex.
Redo them to extract data from the packet as they dissect it, rather
than extracting an entire data structure at once; that way, it may be
able to dissect a structure not all of which is in the packet.
Dissect a bit more of the type-of-service metrics etc. in OSPF packets.
Make "tvb_length_remaining()" return a "gint", not a "guint"; it returns
-1 if the offset is past the end of the tvbuff.
Add a "tvb_reported_length_remaining()" routine, similar to
"tvb_length_remaining()". Use it instead of just subtracting an offset
from "tvb_reported_length()".
svn path=/trunk/; revision=2787
NUL-terminated string, starting at a given offset. The size includes
the terminating NUL. If it doesn't find the terminating NUL, it throws
the appropriate exception, as either there's no terminating NUL in the
packet or there is but it's past the end of the captured data in the
packet.
Use that routine in the TFTP dissector. As it throws an exception if
the string isn't NUL-terminated, we can just use "%s" to print option
strings; we don't need to use "%.*s" with a string length.
svn path=/trunk/; revision=2783
ESIS dissectors.
Register the IP dissector and have dissectors that call it directly
(rather than through a port table) call it through a handle.
Add a routine "tvb_set_reported_length()" which a dissector can use if
it was handed a tvbuff that contains more data than is actually in its
part of the packet - for example, handing a padded Ethernet frame to IP;
the routine sets the reported length of the tvbuff (and also adjusts the
actual length, as appropriate). Then use it in IP.
Given that, "ethertype()" can determine how much of the Ethernet frame
was actually part of an IP datagram (and can do the same for other
protocols under Ethernet that use "tvb_set_reported_length()"; have it
return the actual length, and have "dissect_eth()" and "dissect_vlan()"
use that to mark trailer data in Ethernet II frames as well as in 802.3
frames.
svn path=/trunk/; revision=2658
tvbuff routines that a particular TVBUFF_REAL_DATA tvbuff is a "child"
of another tvbuff. This link is utilized during a tvb_free_chain(), so that
the child is freed when no longer necessary.
svn path=/trunk/; revision=2642
string formatter, like "format_text()", and, as "tvbuff.c" now calls it
(*vide infra*), we don't want to have to make "tvbuff.c" drag "packet.h"
in just to declare "bytes_to_str()". It's now declared in "strutil.h",
so include it in modules that use "bytes_to_str()" and weren't already
including it.
Add a "tvb_bytes_to_str()" wrapper that calls "tvb_get_ptr()" to get a
pointer to a chunk of N bytes at a given offset in a tvbuff and then
hands that chunk to "bytes_to_str()". Convert the code that was doing
that to use "tvb_bytes_to_str()" instead (which caught what I suspect is
a bug in the Q.2931 dissector, where it was handing an offset of 0 to
"tvb_get_ptr()" - a cut-and-pasteo, I think).
Tvbuffify the ARP dissector.
svn path=/trunk/; revision=2634
Add "tvb_find_line_end_unquoted()" for the benefit of the SDP dissector;
get rid of "find_line_end_unquoted()" as nobody uses it any more.
Add "tvb_pbrk_guint8()" for the benefit of
"tvb_find_line_end_unquoted()"; it searches for any of a number of
characters, unlike "tvb_find_guint8()" which searches for only one.
svn path=/trunk/; revision=2595
Add "tvb_find_line_end()", to find a CR and/or LF-terminated line in a
tvbuff and return its length and the offset of the character after the
line end, for the use of those dissectors.
Add "tvb_strncaseeql()", which is like "tvb_strneql()" except that it
does a case-insensitive comparison.
svn path=/trunk/; revision=2590
