- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing

  Changelog for the c-ares project

* 4 Sep 2009 (Daniel Stenberg)

- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing

* 3 Aug 2009 (Daniel Stenberg)

- Joshua Kwan fixed the init routine to fill in the defaults for stuff that

  fails to get inited by other means. This fixes a case of when the c-ares

  ares_parse_aaaa_reply.c		\

  ares_parse_ns_reply.c			\

  ares_parse_ptr_reply.c		\

  ares_parse_srv_reply.c		\

  ares_process.c			\

  ares_query.c				\

  ares_search.c				\

 o new ares_library_init() and ares_library_cleanup() functions

 o new --enable-curldebug configure option

 o ARES_ECANCELLED is now sent as reason for ares_cancel()

 o added ares_parse_srv_reply()

Fixed:

Thanks go to these friendly people for their efforts and contributions:

 Phil Blundell, Japheth Cleaver, Yang Tse, Gregor Jasny, Joshua Kwan,

 Timo Teras

 Timo Teras, Jakub Hrozek

Have fun!

/* $Id$ */

/* Copyright 1998 by the Massachusetts Institute of Technology.

/* Copyright 1998, 2009 by the Massachusetts Institute of Technology.

 * Copyright (C) 2007-2009 by Daniel Stenberg

 *

 * Permission to use, copy, modify, and distribute this

  int             ttl;

};

struct srv_reply {

  u_int16_t weight;

  u_int16_t priority;

  u_int16_t port;

  char *host;

};

/*

** Parse the buffer, starting at *abuf and of length alen bytes, previously

** obtained from an ares_search call.  Put the results in *host, if nonnull.

                         int addrlen, int family, struct hostent **host);

int ares_parse_ns_reply(const unsigned char *abuf, int alen,

                        struct hostent **host);

int ares_parse_srv_reply(const unsigned char* abuf, int alen,

                         struct srv_reply** srv_out, int *nsrvreply);

void ares_free_string(void *str);

void ares_free_hostent(struct hostent *host);

const char *ares_strerror(int code);

.\"

.\" Copyright 1998 by the Massachusetts Institute of Technology.

.\"

.\" Permission to use, copy, modify, and distribute this

.\" software and its documentation for any purpose and without

.\" fee is hereby granted, provided that the above copyright

.\" notice appear in all copies and that both that copyright

.\" notice and this permission notice appear in supporting

.\" documentation, and that the name of M.I.T. not be used in

.\" advertising or publicity pertaining to distribution of the

.\" software without specific, written prior permission.

.\" M.I.T. makes no representations about the suitability of

.\" this software for any purpose.  It is provided "as is"

.\" without express or implied warranty.

.\"

.TH ARES_PARSE_SRV_REPLY 3 "4 August 2009"

.SH NAME

ares_parse_srv_reply \- Parse a reply to a DNS query of type SRV into a

struct srv_reply

.SH SYNOPSIS

.nf

.B #include <ares.h>

.PP

.B int ares_parse_srv_reply(const unsigned char* \fIabuf\fP, int \fIalen\fP,

.B                          struct srv_reply** \fIsrv_out\fP, int *\fInsrvreply\fP);

.fi

.SH DESCRIPTION

The

.B ares_parse_srv_reply

function parses the response to a query of type SRV into a

.I struct srv_reply 

The parameters

.I abuf

and

.I alen

give the contents of the response.  The result is stored in allocated

memory and a pointer to it stored into the variable pointed to by

.IR srv_out .

The number of responses is stored into the variable pointed to by

.IR nsrvreply .

It is the caller's responsibility to free the resulting

.IR srv_out

structure when it is no longer needed.

.PP

The structure 

.I srv_reply

contains the following fields:

.sp

.in +4n

.nf

struct srv_reply {

    u_int16_t weight;

    u_int16_t priority;

    u_int16_t port;

    char *host;

};

.fi

.in

.PP

.SH RETURN VALUES

.B ares_parse_srv_reply

can return any of the following values:

.TP 15

.B ARES_SUCCESS

The response was successfully parsed.

.TP 15

.B ARES_EBADRESP

The response was malformatted.

.TP 15

.B ARES_ENODATA

The response did not contain an answer to the query.

.TP 15

.B ARES_ENOMEM

Memory was exhausted.

.SH SEE ALSO

.BR ares_query (3)

.SH AUTHOR

Written by Jakub Hrozek <jhrozek@redhat.com>, on behalf of Red Hat, Inc http://www.redhat.com