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Diffstat (limited to 'daemon/lua/kres-gen.sh')
| -rwxr-xr-x | daemon/lua/kres-gen.sh | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/daemon/lua/kres-gen.sh b/daemon/lua/kres-gen.sh new file mode 100755 index 0000000..538fe23 --- /dev/null +++ b/daemon/lua/kres-gen.sh @@ -0,0 +1,216 @@ +#!/bin/bash +set -o pipefail -o errexit + +### 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) +# - remove file ./kres-gen.lua and run make as usual +# - the knot-dns libraries are found via pkg-config +# - you also need gdb on $PATH + + +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; +typedef void knot_db_t; +struct kr_cdb_api {}; +struct lru {}; +" + +# 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_query *, const char *, const char *); +typedef void (*trace_callback_f)(struct kr_request *); +" + +./scripts/gen-cdefs.sh libkres types <<-EOF + knot_section_t + knot_rrinfo_t + knot_dname_t + knot_rdata_t + knot_rdataset_t +EOF + +genResType() { + echo "$1" | ./scripts/gen-cdefs.sh libkres types +} + +# No simple way to fixup this rename in ./kres.lua AFAIK. +genResType "knot_rrset_t" | sed 's/\<owner\>/_owner/; s/\<ttl\>/_ttl/' + +./scripts/gen-cdefs.sh libkres types <<-EOF + knot_pkt_t + knot_edns_options_t + knot_pktsection_t + struct knot_compr + knot_compr_t + struct knot_pkt + # generics + map_t + # libkres + struct kr_qflags + rr_array_t + struct ranked_rr_array_entry + ranked_rr_array_entry_t + ranked_rr_array_t + trie_t + struct kr_zonecut + kr_qarray_t + struct kr_rplan + struct kr_request_qsource_flags + struct kr_request + enum kr_rank + struct kr_cache +EOF + +printf " +typedef int32_t (*kr_stale_cb)(int32_t ttl, const knot_dname_t *owner, uint16_t type, + const struct kr_query *qry); + +void kr_rrset_init(knot_rrset_t *rrset, knot_dname_t *owner, + uint16_t type, uint16_t rclass, uint32_t ttl); +" + +## Some definitions would need too many deps, so shorten them. + +genResType "struct kr_nsrep" | sed '/union/,$ d' +printf "\t/* beware: hidden stub, to avoid hardcoding sockaddr lengths */\n};\n" + +genResType "struct kr_query" + +genResType "struct kr_context" | sed '/kr_nsrep_rtt_lru_t/,$ d' +printf "\tchar _stub[];\n};\n" + +## libknot API +./scripts/gen-cdefs.sh 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_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 +./scripts/gen-cdefs.sh libkres functions <<-EOF +# Resolution request + kr_resolve_plan + kr_resolve_pool +# Resolution plan + kr_rplan_push + kr_rplan_pop + kr_rplan_resolved + kr_rplan_last +# Nameservers + kr_nsrep_set +# Utils + kr_make_query + kr_pkt_make_auth_header + kr_pkt_put + kr_pkt_recycle + kr_pkt_clear_payload + kr_pkt_qclass + kr_pkt_qtype + 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_len + kr_inaddr_port + kr_straddr_family + kr_straddr_subnet + kr_bitcmp + kr_family_len + kr_straddr_socket + kr_ranked_rrarray_add + kr_qflags_set + kr_qflags_clear + kr_zonecut_add + kr_zonecut_is_empty + kr_zonecut_set + kr_now + kr_strptime_diff + 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_sync +EOF + + +## libzscanner API for ./zonefile.lua +./scripts/gen-cdefs.sh libzscanner types <<-EOF + zs_win_t + zs_apl_t + zs_loc_t + zs_state_t + zs_scanner_t + struct zs_scanner +EOF +./scripts/gen-cdefs.sh libzscanner functions <<-EOF + zs_deinit + zs_init + zs_parse_record + zs_set_input_file + zs_set_input_string + zs_strerror +EOF + +printf "]]\n" + +exit 0 |