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857c890d9b
The public parser functions around the ns_rr record type produce textual domain names, but usually, this is not what we need while parsing DNS packets within glibc. This commit adds two new helper functions, __ns_rr_cursor_init and __ns_rr_cursor_next, for writing packet parsers, and struct ns_rr_cursor, struct ns_rr_wire as supporting types. In theory, it is possible to avoid copying the owner name into the rname field in __ns_rr_cursor_next, but this would need more functions that work on compressed names. Eventually, __res_context_send could be enhanced to preserve the result of the packet parsing that is necessary for matching the incoming UDP packets, so that this works does not have to be done twice. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
308 lines
9.1 KiB
Makefile
308 lines
9.1 KiB
Makefile
# Copyright (C) 1994-2022 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Sub-makefile for resolv portion of the library.
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#
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subdir := resolv
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include ../Makeconfig
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headers := resolv.h bits/types/res_state.h \
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netdb.h bits/netdb.h \
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arpa/nameser.h arpa/nameser_compat.h \
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sys/bitypes.h
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routines := \
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dn_comp \
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dn_expand \
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dn_skipname \
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dns-canon \
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dns-host \
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dns-network \
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herror \
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inet_addr \
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inet_ntop \
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inet_pton \
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ns_makecanon \
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ns_name_compress \
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ns_name_length_uncompressed \
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ns_name_ntop \
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ns_name_pack \
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ns_name_pton \
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ns_name_skip \
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ns_name_uncompress \
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ns_name_unpack \
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ns_rr_cursor_init \
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ns_rr_cursor_next \
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ns_samebinaryname \
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ns_samename \
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nsap_addr \
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nss_dns_functions \
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res-close \
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res-name-checking \
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res-noaaaa \
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res-state \
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res_context_hostalias \
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res_enable_icmp \
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res_get_nsaddr \
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res_hconf \
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res_init \
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res_libc \
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res_mkquery \
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res_nameinquery \
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res_queriesmatch \
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res_query \
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res_randomid \
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res_send \
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resolv_conf \
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resolv_context \
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# routines
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tests = tst-aton tst-leaks tst-inet_ntop
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tests-container = tst-leaks2
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tests-internal += tst-inet_aton_exact
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generate := mtrace-tst-leaks.out tst-leaks.mtrace tst-leaks2.mtrace
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extra-libs := libresolv libnss_dns
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ifeq ($(have-thread-library),yes)
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routines += gai_sigqueue
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tests += \
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tst-bug18665 \
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tst-bug18665-tcp \
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tst-ns_name \
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tst-ns_name_compress \
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tst-ns_name_pton \
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tst-res_hconf_reorder \
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tst-res_hnok \
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tst-resolv-aliases \
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tst-resolv-basic \
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tst-resolv-binary \
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tst-resolv-byaddr \
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tst-resolv-edns \
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tst-resolv-network \
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tst-resolv-noaaaa \
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tst-resolv-nondecimal \
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tst-resolv-res_init-multi \
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tst-resolv-search \
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tst-resolv-trailing \
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# This test calls __res_context_send directly, which is not exported
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# from libresolv.
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tests-internal += tst-resolv-txnid-collision
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tests-static += tst-resolv-txnid-collision
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# Likewise for __ns_samebinaryname.
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tests-internal += tst-ns_samebinaryname
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tests-static += tst-ns_samebinaryname
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# Likewise for __ns_name_length_uncompressed.
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tests-internal += tst-ns_name_length_uncompressed
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tests-static += tst-ns_name_length_uncompressed
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# Likewise for struct ns_rr_cursor and its functions.
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tests-internal += tst-ns_rr_cursor
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tests-static += tst-ns_rr_cursor
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# These tests need libdl.
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ifeq (yes,$(build-shared))
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tests += \
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tst-resolv-ai_idn \
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tst-resolv-ai_idn-latin1 \
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tst-resolv-ai_idn-nolibidn2 \
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tst-resolv-canonname \
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tst-resolv-trustad \
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# Needs resolv_context.
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tests-internal += \
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tst-resolv-res_init \
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tst-resolv-res_init-thread \
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tst-resolv-res_ninit \
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tst-resolv-threads \
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# Used by tst-resolv-ai_idn-nolibidn2 to disable libidn2 (by not
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# providing any functions in libidn2.so.0).
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modules-names += tst-no-libidn2
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extra-test-objs += tst-no-libidn2.os
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LDFLAGS-tst-no-libidn2.so = -Wl,-soname,libidn2.so.0
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endif # $(build-shared)
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# This test accesses __inet_ntop_length, an internal libc function.
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tests-internal += tst-inet_pton
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# This test accesses the __p_secstodate compat symbol.
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ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)
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tests += tst-p_secstodate
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endif
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# This test sends millions of packets and is rather slow.
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xtests += tst-resolv-qtypes
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# This test has dropped packet tests and runs for a long time.
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xtests += tst-resolv-rotate
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endif # $(have-thread-library)
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extra-libs-others = $(extra-libs)
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libresolv-routines := \
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base64 \
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compat-gethnamaddr \
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compat-hooks \
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inet_net_ntop \
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inet_net_pton \
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inet_neta \
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ns_date \
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ns_name \
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ns_netint \
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ns_parse \
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ns_print \
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ns_samedomain \
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ns_ttl \
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res-putget \
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res_data \
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res_debug \
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res_hostalias \
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res_isourserver \
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resolv-deprecated \
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# libresolv-routines
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ifeq ($(have-GLIBC_2.34)$(have-thread-library),yesyes)
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# Empty compatibility library for old binaries.
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extra-libs += libanl
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libanl-routines += libanl-compat
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libanl-shared-only-routines += libanl-compat
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endif
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$(libanl-routines-var) += \
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gai_cancel \
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gai_error \
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gai_misc \
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gai_notify \
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gai_suspend \
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getaddrinfo_a \
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# $(libanl-routines-var)
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# Pretend that libanl.so is a linker script, so that the symbolic link
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# is not installed.
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install-lib-ldscripts = libanl.so
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$(inst_libdir)/libanl.so:
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subdir-dirs = nss_dns
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vpath %.c nss_dns
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# Build only an empty shared libnss_dns.
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libnss_dns-inhibit-o = $(filter-out .os,$(object-suffixes))
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# Pretend that libnss_dns.so is a linker script, so that the symbolic link
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# is not installed.
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install-lib-ldscripts = libnss_dns.so
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$(inst_libdir)/libnss_dns.so:
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ifeq ($(run-built-tests),yes)
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ifneq (no,$(PERL))
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tests-special += $(objpfx)mtrace-tst-leaks.out $(objpfx)mtrace-tst-leaks2.out \
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$(objpfx)mtrace-tst-resolv-res_ninit.out
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endif
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endif
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generated += mtrace-tst-leaks.out tst-leaks.mtrace \
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mtrace-tst-leaks2.out tst-leaks2.mtrace \
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mtrace-tst-resolv-res_ninit.out tst-resolv-res_ninit.mtrace \
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include ../Rules
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LOCALES := en_US.UTF-8 en_US.ISO-8859-1
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include ../gen-locales.mk
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CFLAGS-res_hconf.c += -fexceptions
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# The DNS NSS modules needs the resolver.
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$(objpfx)libnss_dns.so: $(objpfx)libresolv.so
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# The asynchronous name lookup code needs the thread library.
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$(objpfx)libanl.so: $(shared-thread-library)
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$(objpfx)tst-res_hconf_reorder: $(shared-thread-library)
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tst-res_hconf_reorder-ENV = RESOLV_REORDER=on
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$(objpfx)tst-leaks: $(objpfx)libresolv.so
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tst-leaks-ENV = MALLOC_TRACE=$(objpfx)tst-leaks.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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$(objpfx)mtrace-tst-leaks.out: $(objpfx)tst-leaks.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-leaks.mtrace > $@; \
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$(evaluate-test)
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tst-leaks2-ENV = MALLOC_TRACE=$(objpfx)tst-leaks2.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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$(objpfx)mtrace-tst-leaks2.out: $(objpfx)tst-leaks2.out
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{ test -r $(objpfx)tst-leaks2.mtrace \
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|| ( echo "tst-leaks2.mtrace does not exist"; exit 77; ) \
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&& $(common-objpfx)malloc/mtrace $(objpfx)tst-leaks2.mtrace; } > $@; \
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$(evaluate-test)
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tst-resolv-res_ninit-ENV = MALLOC_TRACE=$(objpfx)tst-resolv-res_ninit.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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$(objpfx)mtrace-tst-resolv-res_ninit.out: $(objpfx)tst-resolv-res_ninit.out
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$(common-objpfx)malloc/mtrace \
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$(objpfx)tst-resolv-res_ninit.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-bug18665-tcp: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-bug18665: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-ai_idn: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-ai_idn-latin1: \
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$(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-ai_idn-nolibidn2: \
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$(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-ai_idn.out: $(gen-locales)
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$(objpfx)tst-resolv-ai_idn-latin1.out: $(gen-locales)
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$(objpfx)tst-resolv-ai_idn-nolibidn2.out: \
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$(gen-locales) $(objpfx)tst-no-libidn2.so
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$(objpfx)tst-resolv-aliases: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-basic: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-binary: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-byaddr: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-edns: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-network: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-res_init: $(objpfx)libresolv.so
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$(objpfx)tst-resolv-res_init-multi: $(objpfx)libresolv.so \
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$(shared-thread-library)
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$(objpfx)tst-resolv-res_init-thread: $(objpfx)libresolv.so \
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$(shared-thread-library)
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$(objpfx)tst-resolv-noaaaa: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-nondecimal: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-rotate: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-search: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-trailing: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-threads: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-txnid-collision: $(objpfx)libresolv.a \
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$(static-thread-library)
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$(objpfx)tst-resolv-canonname: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-trustad: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-ns_name: $(objpfx)libresolv.so
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$(objpfx)tst-ns_name.out: tst-ns_name.data
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$(objpfx)tst-ns_name_compress: $(objpfx)libresolv.so
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$(objpfx)tst-ns_name_pton: $(objpfx)libresolv.so
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$(objpfx)tst-res_hnok: $(objpfx)libresolv.so
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$(objpfx)tst-p_secstodate: $(objpfx)libresolv.so
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