Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 120 insertions, 0 deletions

diff --git a/src/c-ares/ares_parse_txt_reply.3 b/src/c-ares/ares_parse_txt_reply.3
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+.\"
+.\" 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_TXT_REPLY 3 "27 October 2009"
+.SH NAME
+ares_parse_txt_reply \- Parse a reply to a DNS query of type TXT
+.SH SYNOPSIS
+.nf
+.B #include <ares.h>
+.PP
+.B int ares_parse_txt_reply(const unsigned char* \fIabuf\fP, int \fIalen\fP,
+.B                         struct ares_txt_reply **\fItxt_out\fP);
+.PP
+.B int ares_parse_txt_reply_ext(const unsigned char* \fIabuf\fP, int \fIalen\fP,
+.B                              struct ares_txt_ext **\fItxt_out\fP);
+.fi
+.SH DESCRIPTION
+The
+.BR "ares_parse_txt_reply" " (" "ares_parse_txt_reply_ext" ")"
+function parses the response to a query of type TXT into a
+linked list (one element per sub-string) of
+.IR "struct ares_txt_reply" " (" "struct ares_txt_ext" ")"
+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 txt_out .
+It is the caller's responsibility to free the resulting
+.IR txt_out
+structure when it is no longer needed using the function
+.B ares_free_data
+.PP
+The structure 
+.I ares_txt_reply
+contains the following fields:
+.sp
+.in +4n
+.nf
+struct ares_txt_reply {
+  struct ares_txt_reply  *next;
+  unsigned int  length;
+  unsigned char *txt;
+};
+.fi
+.in
+.PP
+The structure
+.I ares_txt_ext
+contains the following fields:
+.sp
+.in +4n
+.nf
+struct ares_txt_ext {
+  struct ares_txt_ext  *next;
+  unsigned int  length;
+  unsigned char *txt;
+  unsigned char record_start;
+};
+.fi
+.in
+.PP
+The
+.I record_start
+field in
+.I struct ares_txt_ext
+is 1 if this structure is a start of a TXT record, and 0 if the structure is a
+continuation of a previous record. The linked list of the
+.I struct ares_txt_ext
+will have at least one item with
+.I record_start
+equal to 1, and may have some items with
+.I record_start
+equal to 0 between them.
+.PP
+These sequences of
+.I struct ares_txt_ext
+(starting from the item with
+.I record_start
+equal to 1, and ending right before the record start item) may be treated as
+either components of a single TXT record or as a multi-parted TXT record,
+depending on particular use case.
+.PP
+.SH RETURN VALUES
+.BR "ares_parse_txt_reply" " (" "ares_parse_txt_reply_ext" ")"
+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 AVAILABILITY
+This function was first introduced in c-ares version 1.7.0.
+.SH SEE ALSO
+.BR ares_query (3)
+.BR ares_free_data (3)
+.SH AUTHOR
+Written by Jakub Hrozek <jhrozek@redhat.com>, on behalf of Red Hat, Inc http://www.redhat.com
+.PP
+Amended by Fedor Indutny <fedor@indutny.com>, on behalf of PayPal, Inc https://www.paypal.com