Adding upstream version 5.3.1.upstream/5.3.1upstream

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

1 files changed, 324 insertions, 0 deletions

diff --git a/daemon/lua/kres-gen.sh b/daemon/lua/kres-gen.sh
new file mode 100755
index 0000000..e4745a8
--- /dev/null
+++ b/daemon/lua/kres-gen.sh
@@ -0,0 +1,324 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# Run with "ninja kres-gen" to re-generate kres-gen.lua
+set -o pipefail -o errexit -o nounset
+
+cd "$(dirname ${0})"
+CDEFS="../../scripts/gen-cdefs.sh"
+LIBKRES="${MESON_BUILD_ROOT}/lib/libkres.so"
+KRESD="${MESON_BUILD_ROOT}/daemon/kresd"
+if [ ! -e "$LIBKRES" ]; then
+	# We probably use static libkres.
+	LIBKRES="$KRESD"
+fi
+
+for REQFILE in "$CDEFS" "$LIBKRES" "$KRESD"
+do
+	test '!' -s "$REQFILE" -a -r "$REQFILE" \
+		&& echo "Required file $REQFILE cannot be read, did you build binaries and shared libraries?" \
+		&& exit 1
+done
+
+# Write to kres-gen.lua instead of stdout
+mv kres-gen.lua{,.bak} ||:
+exec 5<&1-  # move stdout into FD 5
+exec 1<>kres-gen.lua  # replace stdout with file
+
+restore() {
+    exec 1>&-  # close stdout redirected into kres-gen.lua
+    exec 1<&5-  # restore original stdout
+    mv -v kres-gen.lua{,.fail} ||:
+    mv -v kres-gen.lua{.bak,} ||:
+    (>&2 echo "Failed to re-generate kres-gen.lua! Missing debugsymbols? Missing shared library?")
+}
+trap restore ERR INT TERM
+
+### Dev's guide
+#
+# C declarations for lua are (mostly) generated to simplify maintenance.
+# (Avoid typos, accidental mismatches, etc.)
+#
+# To regenerate the C definitions for lua:
+# - you need to have debugging symbols for knot-dns and knot-resolver;
+#   you get those by compiling with -g; for knot-dns it might be enough
+#   to just install it with debugging symbols included (in your distro way)
+# - run ninja kres-gen
+# - the knot-dns libraries are found via pkg-config
+# - you also need gdb on $PATH
+
+printf -- "-- SPDX-License-Identifier: GPL-3.0-or-later\n\n"
+printf -- "local ffi = require('ffi')\n"
+printf -- "--[[ This file is generated by ./kres-gen.sh ]] ffi.cdef[[\n"
+
+## Various types (mainly), from libknot and libkres
+
+printf "
+typedef struct knot_dump_style knot_dump_style_t;
+extern const knot_dump_style_t KNOT_DUMP_STYLE_DEFAULT;
+struct kr_cdb_api {};
+struct lru {};
+"
+
+${CDEFS} ${LIBKRES} types <<-EOF
+	knot_section_t
+	knot_rrinfo_t
+	knot_dname_t
+	knot_rdata_t
+	knot_rdataset_t
+EOF
+
+# The generator doesn't work well with typedefs of functions.
+printf "
+typedef struct knot_mm {
+	void *ctx, *alloc, *free;
+} knot_mm_t;
+
+typedef void *(*map_alloc_f)(void *, size_t);
+typedef void (*map_free_f)(void *baton, void *ptr);
+typedef void (*trace_log_f) (const struct kr_request *, const char *);
+typedef void (*trace_callback_f)(struct kr_request *);
+typedef uint8_t * (*alloc_wire_f)(struct kr_request *req, uint16_t *maxlen);
+typedef bool (*addr_info_f)(struct sockaddr*);
+"
+
+genResType() {
+	echo "$1" | ${CDEFS} ${LIBKRES} types
+}
+
+# No simple way to fixup this rename in ./kres.lua AFAIK.
+genResType "knot_rrset_t" | sed 's/\<owner\>/_owner/; s/\<ttl\>/_ttl/'
+
+printf "
+struct kr_module;
+typedef char *(kr_prop_cb)(void *, struct kr_module *, const char *);
+"
+
+${CDEFS} ${LIBKRES} types <<-EOF
+	#knot_pkt_t contains indirect recursion
+	typedef knot_pkt_t
+	knot_edns_options_t
+	knot_pktsection_t
+	knot_compr_t
+	struct knot_pkt
+	# lib/generic/
+	map_t
+	#trie_t inside is private to libknot
+	typedef trie_t
+	# libkres
+	struct kr_qflags
+	ranked_rr_array_entry_t
+	ranked_rr_array_t
+	inaddr_array_t
+	struct kr_zonecut
+	kr_qarray_t
+	struct kr_rplan
+	struct kr_request_qsource_flags
+	struct kr_request
+	enum kr_rank
+	typedef kr_cdb_pt
+	struct kr_cdb_stats
+	typedef uv_timer_t
+	struct kr_cache
+	# lib/layer.h
+	kr_layer_t
+	kr_layer_api_t
+	# lib/module.h
+	struct kr_prop
+	struct kr_module
+	struct kr_server_selection
+EOF
+
+# a static variable; the line might not be simple to generate
+printf "kr_layer_t kr_layer_t_static;"
+
+printf "
+typedef int32_t (*kr_stale_cb)(int32_t ttl, const knot_dname_t *owner, uint16_t type,
+				const struct kr_query *qry);
+
+void kr_rrset_init(knot_rrset_t *rrset, knot_dname_t *owner,
+			uint16_t type, uint16_t rclass, uint32_t ttl);
+"
+
+## Some definitions would need too many deps, so shorten them.
+
+genResType "struct kr_query"
+
+genResType "struct kr_context" | sed '/module_array_t/,$ d'
+printf "\tchar _stub[];\n};\n"
+
+
+echo "struct kr_transport" | ${CDEFS} ${KRESD} types | sed '/union /,$ d'
+printf "\t/* beware: hidden stub, to avoid hardcoding sockaddr lengths */\n};\n"
+
+## libknot API
+${CDEFS} libknot functions <<-EOF
+# Utils
+	knot_strerror
+# Domain names
+	knot_dname_copy
+	knot_dname_from_str
+	knot_dname_in_bailiwick
+	knot_dname_is_equal
+	knot_dname_labels
+	knot_dname_size
+	knot_dname_to_lower
+	knot_dname_to_str
+# Resource records
+	knot_rdataset_at
+	knot_rdataset_merge
+	knot_rrset_add_rdata
+	knot_rrset_free
+	knot_rrset_txt_dump
+	knot_rrset_txt_dump_data
+	knot_rrset_size
+# Packet
+	knot_pkt_begin
+	knot_pkt_put_question
+	knot_pkt_put_rotate
+	knot_pkt_new
+	knot_pkt_free
+	knot_pkt_parse
+EOF
+
+## libkres API
+${CDEFS} ${LIBKRES} functions <<-EOF
+# Resolution request
+	kr_request_ensure_answer
+	kr_resolve_plan
+	kr_resolve_pool
+# Resolution plan
+	kr_rplan_push
+	kr_rplan_pop
+	kr_rplan_resolved
+	kr_rplan_last
+# Forwarding
+	kr_forward_add_target
+# Utils
+	kr_log_req
+	kr_log_q
+	kr_make_query
+	kr_pkt_make_auth_header
+	kr_pkt_put
+	kr_pkt_recycle
+	kr_pkt_clear_payload
+	kr_pkt_has_dnssec
+	kr_pkt_qclass
+	kr_pkt_qtype
+	kr_pkt_text
+	kr_rnd_buffered
+	kr_rrsig_sig_inception
+	kr_rrsig_sig_expiration
+	kr_rrsig_type_covered
+	kr_inaddr
+	kr_inaddr_family
+	kr_inaddr_len
+	kr_inaddr_str
+	kr_sockaddr_cmp
+	kr_sockaddr_len
+	kr_inaddr_port
+	kr_straddr_family
+	kr_straddr_subnet
+	kr_bitcmp
+	kr_family_len
+	kr_straddr_socket
+	kr_straddr_split
+	kr_rank_test
+	kr_ranked_rrarray_add
+	kr_ranked_rrarray_finalize
+	kr_qflags_set
+	kr_qflags_clear
+	kr_zonecut_add
+	kr_zonecut_is_empty
+	kr_zonecut_set
+	kr_now
+	kr_strptime_diff
+	kr_file_mtime
+	kr_fssize
+	kr_dirent_name
+	lru_free_items_impl
+	lru_create_impl
+	lru_get_impl
+	mm_realloc
+# Trust anchors
+	kr_ta_get
+	kr_ta_add
+	kr_ta_del
+	kr_ta_clear
+# DNSSEC
+	kr_dnssec_key_ksk
+	kr_dnssec_key_revoked
+	kr_dnssec_key_tag
+	kr_dnssec_key_match
+# Cache
+	kr_cache_closest_apex
+	kr_cache_insert_rr
+	kr_cache_remove
+	kr_cache_remove_subtree
+	kr_cache_commit
+	# FIXME: perhaps rename this exported symbol
+	packet_ttl
+EOF
+
+
+## kresd itself: worker stuff
+
+${CDEFS} ${KRESD} types <<-EOF
+	endpoint_flags_t
+	# struct args is a bit complex
+	addr_array_t
+	flagged_fd_t
+	flagged_fd_array_t
+	config_array_t
+	struct args
+EOF
+echo "struct args *the_args;"
+
+echo "struct endpoint"    | ${CDEFS} ${KRESD} types | sed 's/uv_handle_t \*/void */'
+echo "struct request_ctx" | ${CDEFS} ${KRESD} types | sed '/struct {/,$ d'
+printf "\t/* beware: hidden stub, to avoid hardcoding sockaddr lengths */\n};\n"
+
+echo "struct qr_task" | ${CDEFS} ${KRESD} types | sed '/pktbuf/,$ d'
+printf "\t/* beware: hidden stub, to avoid qr_tasklist_t */\n};\n"
+
+
+${CDEFS} ${KRESD} functions <<-EOF
+	worker_resolve_exec
+	worker_resolve_mk_pkt
+	worker_resolve_start
+EOF
+
+echo "struct engine" | ${CDEFS} ${KRESD} types | sed '/struct network/,$ d'
+printf "\tchar _stub[];\n};\n"
+
+echo "struct worker_ctx" | ${CDEFS} ${KRESD} types | sed '/uv_loop_t/,$ d'
+printf "\tchar _stub[];\n};\n"
+
+echo "struct worker_ctx *the_worker;"
+
+
+## libzscanner API for ./zonefile.lua
+${CDEFS} libzscanner types <<-EOF
+	zs_win_t
+	zs_apl_t
+	zs_loc_t
+	zs_state_t
+	#zs_scanner_t contains recursion
+	typedef zs_scanner_t
+	zs_scanner_t
+EOF
+${CDEFS} libzscanner functions <<-EOF
+	zs_deinit
+	zs_init
+	zs_parse_record
+	zs_set_input_file
+	zs_set_input_string
+	zs_strerror
+EOF
+
+printf "]]\n"
+
+rm kres-gen.lua.bak ||:
+(>&2 echo "Successfully re-generated ${PWD}/kres-gen.lua")
+
+exit 0