From: Florian Weimer <fweimer@redhat.com>
To: libc-alpha@sourceware.org
Subject: [PATCH 00/13] nss_dns: Fix handling of non-host CNAMEs (bug 12154)
Date: Wed, 10 Aug 2022 11:30:13 +0200 [thread overview]
Message-ID: <cover.1660123636.git.fweimer@redhat.com> (raw)
This series is my last attempt at fixing bug 12154. The bug is that
some sites have names like *.wildcard.example.org in their CNAME chains,
and we fail lookup completely instead of suppressing that invalid host
names.
The changes are more involved than I would have liked, but each time I
think I have a simple fix, I end up rewriting the DNS parsers.
Tested on i686-linux-gnu and x86_64-linux-gnu.
Thanks,
Florian
Florian Weimer (13):
resolv: Add tst-resolv-byaddr for testing reverse lookup
resolv: Add tst-resolv-aliases
resolv: Add internal __res_binary_hnok function
resolv: Add the __ns_samebinaryname function
resolv: Add internal __ns_name_length_uncompressed function
resolv: Add DNS packet parsing helpers geared towards wire format
nss_dns: Split getanswer_ptr from getanswer_r
nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr
nss_dns: Remove remnants of IPv6 address mapping
nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug
29305)
nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154)
resolv: Add new tst-resolv-invalid-cname
nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces
include/arpa/nameser.h | 106 ++
include/resolv.h | 3 +
resolv/Makefile | 23 +
resolv/README | 3 -
resolv/mapv4v6addr.h | 69 --
resolv/mapv4v6hostent.h | 84 --
resolv/ns_name_length_uncompressed.c | 72 ++
resolv/ns_rr_cursor_init.c | 62 ++
resolv/ns_rr_cursor_next.c | 74 ++
resolv/ns_samebinaryname.c | 55 +
resolv/nss_dns/dns-host.c | 1184 +++++++++-------------
resolv/res-name-checking.c | 14 +-
resolv/tst-ns_name_length_uncompressed.c | 135 +++
resolv/tst-ns_rr_cursor.c | 227 +++++
resolv/tst-ns_samebinaryname.c | 62 ++
resolv/tst-resolv-aliases.c | 267 +++++
resolv/tst-resolv-byaddr.c | 339 +++++++
resolv/tst-resolv-invalid-cname.c | 406 ++++++++
18 files changed, 2303 insertions(+), 882 deletions(-)
delete mode 100644 resolv/mapv4v6addr.h
delete mode 100644 resolv/mapv4v6hostent.h
create mode 100644 resolv/ns_name_length_uncompressed.c
create mode 100644 resolv/ns_rr_cursor_init.c
create mode 100644 resolv/ns_rr_cursor_next.c
create mode 100644 resolv/ns_samebinaryname.c
create mode 100644 resolv/tst-ns_name_length_uncompressed.c
create mode 100644 resolv/tst-ns_rr_cursor.c
create mode 100644 resolv/tst-ns_samebinaryname.c
create mode 100644 resolv/tst-resolv-aliases.c
create mode 100644 resolv/tst-resolv-byaddr.c
create mode 100644 resolv/tst-resolv-invalid-cname.c
base-commit: 2ed26bca997a8fc898f4cb94484abaee2f307311
--
2.37.1
next reply other threads:[~2022-08-10 9:30 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 9:30 Florian Weimer [this message]
2022-08-10 9:30 ` [PATCH 01/13] resolv: Add tst-resolv-byaddr for testing reverse lookup Florian Weimer
2022-08-18 15:26 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 02/13] resolv: Add tst-resolv-aliases Florian Weimer
2022-08-18 16:36 ` Siddhesh Poyarekar
2022-08-19 14:20 ` Florian Weimer
2022-08-19 14:27 ` Siddhesh Poyarekar
2022-08-19 14:54 ` Florian Weimer
2022-08-24 13:30 ` Florian Weimer
2022-08-10 9:30 ` [PATCH 03/13] resolv: Add internal __res_binary_hnok function Florian Weimer
2022-08-18 16:40 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 04/13] resolv: Add the __ns_samebinaryname function Florian Weimer
2022-08-18 16:46 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 05/13] resolv: Add internal __ns_name_length_uncompressed function Florian Weimer
2022-08-18 17:23 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 06/13] resolv: Add DNS packet parsing helpers geared towards wire format Florian Weimer
2022-08-18 18:57 ` Siddhesh Poyarekar
2022-08-19 14:59 ` Florian Weimer
2022-08-19 15:13 ` Siddhesh Poyarekar
2022-08-22 15:59 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 07/13] nss_dns: Split getanswer_ptr from getanswer_r Florian Weimer
2022-08-22 16:18 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 08/13] nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr Florian Weimer
2022-08-22 21:59 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 09/13] nss_dns: Remove remnants of IPv6 address mapping Florian Weimer
2022-08-22 22:05 ` Siddhesh Poyarekar
2022-08-10 9:30 ` [PATCH 10/13] nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug 29305) Florian Weimer
2022-08-22 22:20 ` Siddhesh Poyarekar
2022-08-10 9:31 ` [PATCH 11/13] nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154) Florian Weimer
2022-08-23 12:23 ` Siddhesh Poyarekar
2022-08-10 9:31 ` [PATCH 12/13] resolv: Add new tst-resolv-invalid-cname Florian Weimer
2022-08-23 12:32 ` Siddhesh Poyarekar
2022-08-10 9:31 ` [PATCH 13/13] nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces Florian Weimer
2022-08-23 12:49 ` Siddhesh Poyarekar
2022-08-24 12:25 ` Florian Weimer
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