mirror of https://github.com/c-ares/c-ares.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.4 KiB
48 lines
1.4 KiB
.\" |
|
.\" Copyright 1998 by the Massachusetts Institute of Technology. |
|
.\" SPDX-License-Identifier: MIT |
|
.\" |
|
.TH ARES_EXPAND_NAME 3 "20 Nov 2009" |
|
.SH NAME |
|
ares_expand_string \- Expand a length encoded string |
|
.SH SYNOPSIS |
|
.nf |
|
#include <ares.h> |
|
|
|
int ares_expand_string(const unsigned char *\fIencoded\fP, |
|
const unsigned char *\fIabuf\fP, int \fIalen\fP, |
|
unsigned char **\fIs\fP, long *\fIenclen\fP) |
|
.fi |
|
.SH DESCRIPTION |
|
The |
|
.B ares_expand_string |
|
function converts a length encoded string to a NUL-terminated C |
|
string. The argument |
|
.I encoded |
|
gives the beginning of the encoded string, and the arguments |
|
.I abuf |
|
and |
|
.I alen |
|
give the containing message buffer (necessary for the processing of |
|
indirection pointers within the encoded domain name). The result is |
|
placed in a NUL-terminated allocated buffer, a pointer to which is |
|
stored in the variable pointed to by |
|
.IR s . |
|
The length of the encoded string is stored in the variable pointed to by |
|
.I enclen |
|
so that the caller can advance past the encoded string to read |
|
further data in the message. |
|
.SH RETURN VALUES |
|
.B ares_expand_string |
|
can return any of the following values: |
|
.TP 15 |
|
.B ARES_SUCCESS |
|
Expansion of the encoded string succeeded. |
|
.TP 15 |
|
.B ARES_EBADSTR |
|
The encoded string was malformed and could not be expanded. |
|
.TP 15 |
|
.B ARES_ENOMEM |
|
Memory was exhausted. |
|
.SH SEE ALSO |
|
.BR ares_free_string (3)
|
|
|