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|
#!/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
|
