diff options
author | Bill Meier <wmeier@newsguy.com> | 2008-10-23 00:19:58 +0000 |
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committer | Bill Meier <wmeier@newsguy.com> | 2008-10-23 00:19:58 +0000 |
commit | 6bfb1a0cde7626e329f924a10aba430b63b38982 (patch) | |
tree | 6237e5db90f7e71f65fa0718d8a273d3cae14c37 /doc/README.developer | |
parent | 6e901dc4fe3d91070893cdad47e40c6afe5d8314 (diff) |
Add tvb_bytes_to_str() & tvb_bytes_to_str_punct(); fix a few typos.
svn path=/trunk/; revision=26519
Diffstat (limited to 'doc/README.developer')
-rw-r--r-- | doc/README.developer | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/doc/README.developer b/doc/README.developer index 9e9f53fbb1..22f069fdfb 100644 --- a/doc/README.developer +++ b/doc/README.developer @@ -16,7 +16,7 @@ Before starting to develop a new dissector, a "running" Wireshark build environment is required - there's no such thing as a standalone "dissector build toolkit". -How to setup such an environment is platform dependent, detailed information +How to setup such an environment is platform dependent; detailed information about these steps can be found in the "Developer's Guide" (available from: http://www.wireshark.org) and in the INSTALL and README files of the sources root dir. @@ -139,7 +139,7 @@ Wireshark that take format arguments, use G_GINT64_MODIFIER, for example: sequence_number); When using standard C routines, such as printf and scanf, use -PRId64, PRIu64, PRIx64, PRIX64, and PRIo64, for example: +PRId64, PRIu64, PRIx64, PRIX64, and PRIo64; for example: printf("Sequence Number: %" PRIu64 "\n", sequence_number); @@ -475,10 +475,10 @@ If you are allocating a chunk of memory to contain data from a packet, or to contain information derived from data in a packet, and the size of the chunk of memory is derived from a size field in the packet, make sure all the data is present in the packet before allocating the buffer. -Doing so means that +Doing so means that: 1) Wireshark won't leak that chunk of memory if an attempt to - fetch data not present in the packet throws an exception + fetch data not present in the packet throws an exception. and @@ -1143,6 +1143,22 @@ heap with a lifetime until the next packet is dissected. You do not need to free() this buffer, it will happen automatically once the next packet is dissected. +Byte Array Accessors: + +gchar *tvb_bytes_to_str(tvbuff_t *tvb, gint offset, gint len); + +Formats a bunch of data from a tvbuff as bytes, returning a pointer +to the string with the data formatted as two hex digits for each byte. +The string pointed to is stored in an "ep_alloc'd" buffer which will be freed +before the next frame is dissected. The formatted string will contain the hex digits +for at most the first 16 bytes of the data. If len is greater than 16 bytes, a +trailing "..." will be added to the string. + +gchar *tvb_bytes_to_str_punct(tvbuff_t *tvb, gint offset, gint len, gchar punct); + +This function is similar to tvb_bytes_to_str(...) except that 'punct' is inserted +between the hex representation of each byte. + Copying memory: guint8* tvb_memcpy(tvbuff_t*, guint8* target, gint offset, gint length); @@ -2116,7 +2132,7 @@ Output format: proto_tree_add_bits_ret_val() ----------------------------- -Works in the same way but alo returns the value of the read bits. +Works in the same way but also returns the value of the read bits. proto_tree_add_protocol_format() -------------------------------- |