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-rw-r--r--src/libknot/rrset-dump.c2292
1 files changed, 2292 insertions, 0 deletions
diff --git a/src/libknot/rrset-dump.c b/src/libknot/rrset-dump.c
new file mode 100644
index 0000000..dd814de
--- /dev/null
+++ b/src/libknot/rrset-dump.c
@@ -0,0 +1,2292 @@
+/* Copyright (C) 2023 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <arpa/inet.h>
+#include <inttypes.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "libdnssec/binary.h"
+#include "libdnssec/key.h"
+#include "libdnssec/keytag.h"
+#include "libknot/attribute.h"
+#include "libknot/rrset-dump.h"
+#include "libknot/codes.h"
+#include "libknot/consts.h"
+#include "libknot/descriptor.h"
+#include "libknot/errcode.h"
+#include "libknot/lookup.h"
+#include "libknot/rrtype/rrsig.h"
+#include "libknot/wire.h"
+#include "contrib/base32hex.h"
+#include "contrib/base64.h"
+#include "contrib/color.h"
+#include "contrib/ctype.h"
+#include "contrib/musl/inet_ntop.h"
+#include "contrib/time.h"
+#include "contrib/wire_ctx.h"
+
+#define RRSET_DUMP_LIMIT (2 * 1024 * 1024)
+
+#define TAB_WIDTH 8
+#define BLOCK_WIDTH 40
+#define BLOCK_INDENT "\n\t\t\t\t"
+
+#define LOC_ZERO 2147483648 // 2^31
+
+/*! \brief macros with repetitive (mostly error-checking) code of methods from first section of this file */
+#define CHECK_PRET if (p->ret < 0) return;
+#define CHECK_INMAX(mininmax) if (p->in_max < (mininmax)) { p->ret = -1; return; }
+#define CHECK_RET_OUTMAX_SNPRINTF if (ret <= 0 || (size_t)ret >= p->out_max) { p->ret = -1; return; }
+#define STRING_TERMINATION if (p->out_max > 0) { *p->out = '\0'; } else { p->ret = -1; return; }
+#define FILL_IN_INPUT(pdata) if (memcpy(&(pdata), p->in, in_len) == NULL) { p->ret = -1; return; }
+#define CHECK_RET_POSITIVE if (ret <= 0) { p->ret = -1; return; }
+
+#define SNPRINTF_CHECK(ret, max_len) \
+ if ((ret) < 0 || (size_t)(ret) >= (max_len)) { \
+ return KNOT_ESPACE; \
+ }
+
+typedef struct {
+ const knot_dump_style_t *style;
+ const uint8_t *in;
+ size_t in_max;
+ char *out;
+ size_t out_max;
+ size_t total;
+ int ret;
+} rrset_dump_params_t;
+
+_public_
+const knot_dump_style_t KNOT_DUMP_STYLE_DEFAULT = {
+ .wrap = false,
+ .show_class = false,
+ .show_ttl = true,
+ .verbose = false,
+ .original_ttl = true,
+ .empty_ttl = false,
+ .human_ttl = false,
+ .human_timestamp = true,
+ .hide_crypto = false,
+ .ascii_to_idn = NULL,
+ .color = NULL,
+ .now = 0,
+};
+
+static void dump_string(rrset_dump_params_t *p, const char *str)
+{
+ CHECK_PRET
+
+ size_t in_len = strlen(str);
+
+ // Check input size (+ 1 termination).
+ if (in_len >= p->out_max) {
+ p->ret = -1;
+ return;
+ }
+
+ // Copy string including termination '\0'!
+ if (memcpy(p->out, str, in_len + 1) == NULL) {
+ p->ret = -1;
+ return;
+ }
+
+ // Fill in output.
+ p->out += in_len;
+ p->out_max -= in_len;
+ p->total += in_len;
+}
+
+static void wire_num8_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint8_t data = *(p->in);
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ // Write number.
+ int ret = snprintf(p->out, p->out_max, "%u", data);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_num16_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint16_t data;
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ // Fill in input data.
+ data = knot_wire_read_u16(p->in);
+
+ // Write number.
+ int ret = snprintf(p->out, p->out_max, "%u", data);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_num32_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint32_t data;
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ // Fill in input data.
+ data = knot_wire_read_u32(p->in);
+
+ // Write number.
+ int ret = snprintf(p->out, p->out_max, "%u", data);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_num48_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint64_t data;
+ size_t in_len = 6;
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ // Fill in input data.
+ data = knot_wire_read_u48(p->in);
+
+ // Write number.
+ int ret = snprintf(p->out, p->out_max, "%"PRIu64"", data);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_ipv4_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ struct in_addr addr4;
+ size_t in_len = sizeof(addr4.s_addr);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ FILL_IN_INPUT(addr4.s_addr)
+
+ // Write address.
+ if (knot_inet_ntop(AF_INET, &addr4, p->out, p->out_max) == NULL) {
+ p->ret = -1;
+ return;
+ }
+ out_len = strlen(p->out);
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_ipv6_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ struct in6_addr addr6;
+ size_t in_len = sizeof(addr6.s6_addr);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ FILL_IN_INPUT(addr6.s6_addr)
+
+ // Write address.
+ if (knot_inet_ntop(AF_INET6, &addr6, p->out, p->out_max) == NULL) {
+ p->ret = -1;
+ return;
+ }
+ out_len = strlen(p->out);
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_type_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ char type[32];
+ uint16_t data;
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ FILL_IN_INPUT(data)
+
+ // Get record type name string.
+ int ret = knot_rrtype_to_string(ntohs(data), type, sizeof(type));
+ CHECK_RET_POSITIVE
+
+ // Write string.
+ ret = snprintf(p->out, p->out_max, "%s", type);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static int hex_encode(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t *out,
+ const uint32_t out_len)
+{
+ static const char hex[] = "0123456789ABCDEF";
+
+ if (out_len < 2 * in_len) {
+ return -1;
+ }
+
+ for (uint32_t i = 0; i < in_len; i++) {
+ out[2 * i] = hex[in[i] / 16];
+ out[2 * i + 1] = hex[in[i] % 16];
+ }
+
+ return 2 * in_len;
+}
+
+static int hex_encode_alloc(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t **out)
+{
+ uint32_t out_len = 2 * in_len;
+
+ // Allocating output buffer.
+ *out = malloc(out_len);
+
+ if (*out == NULL) {
+ return -1;
+ }
+
+ // Encoding data.
+ return hex_encode(in, in_len, *out, out_len);
+}
+
+static int num48_encode(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t *out,
+ const uint32_t out_len)
+{
+ if (in_len != 6) {
+ return -1;
+ }
+
+ uint64_t data = knot_wire_read_u48(in);
+
+ int ret = snprintf((char *)out, out_len, "%"PRIu64"", data);
+ if (ret <= 0 || (size_t)ret >= out_len) {
+ return -1;
+ }
+
+ return ret;
+}
+
+typedef int (*encode_t)(const uint8_t *in, const uint32_t in_len,
+ uint8_t *out, const uint32_t out_len);
+
+typedef int (*encode_alloc_t)(const uint8_t *in, const uint32_t in_len,
+ uint8_t **out);
+
+static void wire_data_encode_to_str(rrset_dump_params_t *p,
+ encode_t enc, encode_alloc_t enc_alloc)
+{
+ CHECK_PRET
+
+ int ret;
+ size_t in_len = p->in_max;
+
+ // One-line vs multi-line mode.
+ if (p->style->wrap == false) {
+ // Encode data directly to the output.
+ ret = enc(p->in, in_len, (uint8_t *)(p->out), p->out_max);
+ CHECK_RET_POSITIVE
+ size_t out_len = ret;
+
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+ } else {
+ int src_begin;
+ uint8_t *buf;
+
+ // Encode data to the temporary buffer.
+ ret = enc_alloc(p->in, in_len, &buf);
+ CHECK_RET_POSITIVE
+
+ // Loop which wraps base64 block in more lines.
+ for (src_begin = 0; src_begin < ret; src_begin += BLOCK_WIDTH) {
+ if (src_begin > 0) {
+ // Write indent block.
+ dump_string(p, BLOCK_INDENT);
+ if (p->ret < 0) {
+ free(buf);
+ return;
+ }
+ }
+
+ // Compute block length (the last one can be shorter).
+ int src_len = (ret - src_begin) < BLOCK_WIDTH ?
+ (ret - src_begin) : BLOCK_WIDTH;
+
+ if ((size_t)src_len > p->out_max) {
+ free(buf);
+ p->ret = -1;
+ return;
+ }
+
+ // Write data block.
+ memcpy(p->out, buf + src_begin, src_len);
+
+ p->out += src_len;
+ p->out_max -= src_len;
+ p->total += src_len;
+ }
+
+ // Destroy temporary buffer.
+ free(buf);
+ }
+
+ STRING_TERMINATION
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+}
+
+static void wire_len_data_encode_to_str(rrset_dump_params_t *p,
+ encode_t enc,
+ const size_t len_len,
+ const bool print_len,
+ const char *empty_str)
+{
+ CHECK_PRET
+
+ size_t in_len;
+
+ // First len_len bytes are data length.
+ CHECK_INMAX(len_len)
+
+ // Read data length.
+ switch (len_len) {
+ case 1:
+ in_len = *(p->in);
+ break;
+ case 2:
+ in_len = knot_wire_read_u16(p->in);
+ break;
+ case 4:
+ in_len = knot_wire_read_u32(p->in);
+ break;
+ default:
+ p->ret = -1;
+ return;
+ }
+
+ // If required print data length.
+ if (print_len == true) {
+ switch (len_len) {
+ case 1:
+ wire_num8_to_str(p);
+ break;
+ case 2:
+ wire_num16_to_str(p);
+ break;
+ case 4:
+ wire_num32_to_str(p);
+ break;
+ }
+
+ CHECK_PRET
+
+ // If something follows, print one space character.
+ if (in_len > 0 || *empty_str != '\0') {
+ dump_string(p, " ");
+ CHECK_PRET
+ }
+ } else {
+ p->in += len_len;
+ p->in_max -= len_len;
+ }
+
+ if (in_len > 0) {
+ // Encode data directly to the output.
+ int ret = enc(p->in, in_len, (uint8_t *)(p->out), p->out_max);
+ CHECK_RET_POSITIVE
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+
+ STRING_TERMINATION
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ } else if (*empty_str != '\0') {
+ dump_string(p, empty_str);
+ CHECK_PRET
+ }
+}
+
+static void wire_data_omit(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ const char *omit_message = "[omitted]";
+ const size_t omlen = strlen(omit_message);
+
+ if (p->out_max < omlen) {
+ p->ret = -1;
+ return;
+ }
+
+ memcpy(p->out, omit_message, omlen);
+ p->out += omlen;
+ p->out_max -= omlen;
+ p->total += omlen;
+
+ STRING_TERMINATION
+
+ p->in += p->in_max;
+ p->in_max = 0;
+}
+
+static void wire_dnskey_to_tag(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ int key_pos = -4; // we expect that key flags, 3 and algorithm
+ // have been already dumped
+
+ uint16_t key_tag = 0;
+ const dnssec_binary_t rdata_bin = {
+ .data = (uint8_t *)(p->in + key_pos),
+ .size = p->in_max - key_pos
+ };
+ dnssec_keytag(&rdata_bin, &key_tag);
+
+ int ret = snprintf(p->out, p->out_max, "[id = %hu]", key_tag);
+ CHECK_RET_OUTMAX_SNPRINTF
+
+ p->in += p->in_max;
+ p->in_max = 0;
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+}
+
+static void wire_unknown_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ int ret;
+ size_t in_len = p->in_max;
+ size_t out_len = 0;
+
+ // Write unknown length header.
+ if (in_len > 0) {
+ ret = snprintf(p->out, p->out_max, "\\# %zu ", in_len);
+ } else {
+ ret = snprintf(p->out, p->out_max, "\\# 0");
+ }
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+
+ // Fill in output.
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+
+ // Write hex data if any.
+ if (in_len > 0) {
+ // If wrap mode wrap line.
+ if (p->style->wrap) {
+ dump_string(p, BLOCK_INDENT);
+ CHECK_PRET
+ }
+
+ wire_data_encode_to_str(p, &hex_encode, &hex_encode_alloc);
+ CHECK_PRET
+ }
+}
+
+static void wire_text_to_str(rrset_dump_params_t *p, bool quote,
+ unsigned with_header_len, bool alpn_mode)
+{
+ CHECK_PRET
+
+ size_t in_len = 0;
+
+ CHECK_INMAX(with_header_len)
+ switch (with_header_len) {
+ case 0:
+ in_len = p->in_max;
+ break;
+ case 1:
+ in_len = *(p->in);
+ break;
+ case 2:
+ in_len = knot_wire_read_u16(p->in);
+ break;
+ default:
+ assert(0);
+ }
+ p->in += with_header_len;
+ p->in_max -= with_header_len;
+ CHECK_INMAX(in_len)
+
+ // Check if quotation can ever be disabled (parser protection fallback).
+ if (!quote) {
+ for (size_t i = 0; i < in_len; i++) {
+ if (p->in[i] == ' ') { // Other WS characters are encoded.
+ quote = true;
+ break;
+ }
+ }
+ }
+
+ // Opening quotation.
+ if (quote) {
+ dump_string(p, "\"");
+ CHECK_PRET
+ }
+
+ // Loop over all characters.
+ for (size_t i = 0; i < in_len; i++) {
+ uint8_t ch = p->in[i];
+
+ if (is_print(ch)) {
+ // For special character print leading slash.
+ if (ch == '\\' || ch == '"') {
+ dump_string(p, "\\");
+ CHECK_PRET
+ }
+ if (alpn_mode && (ch == ',' || ch == '\\')) {
+ dump_string(p, "\\\\");
+ CHECK_PRET
+ }
+
+ // Print text character.
+ if (p->out_max == 0) {
+ p->ret = -1;
+ return;
+ }
+
+ *p->out = ch;
+ p->out++;
+ p->out_max--;
+ p->total++;
+ } else {
+ // Unprintable character encode via \ddd notation.
+ int ret = snprintf(p->out, p->out_max,"\\%03u", ch);
+ CHECK_RET_OUTMAX_SNPRINTF
+
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+ }
+ }
+
+ // Closing quotation.
+ if (quote) {
+ dump_string(p, "\"");
+ CHECK_PRET
+ }
+
+ STRING_TERMINATION
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+}
+
+static void wire_timestamp_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint32_t data;
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+ int ret;
+
+ CHECK_INMAX(in_len)
+
+ FILL_IN_INPUT(data)
+
+ time_t timestamp = ntohl(data);
+ if (sizeof(time_t) > 4) {
+ timestamp = knot_time_from_u32(timestamp, p->style->now);
+ }
+
+ if (p->style->human_timestamp) {
+ struct tm result;
+ // Write timestamp in YYYYMMDDhhmmss format.
+ ret = strftime(p->out, p->out_max, "%Y%m%d%H%M%S",
+ gmtime_r(&timestamp, &result));
+ CHECK_RET_POSITIVE
+ } else {
+ // Write timestamp only.
+ ret = snprintf(p->out, p->out_max, "%u", ntohl(data));
+ CHECK_RET_OUTMAX_SNPRINTF
+ }
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static uint32_t wire_time_to_val(rrset_dump_params_t *p)
+{
+ uint32_t data;
+ size_t in_len = sizeof(data);
+
+ if (p->ret < 0 || p->in_max < in_len ||
+ memcpy(&data, p->in, in_len) == NULL) {
+ p->ret = -1;
+ return 0;
+ }
+
+ return ntohl(data);
+}
+
+static void wire_ttl_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint32_t data;
+ size_t in_len = sizeof(data);
+ size_t out_len = 0;
+ int ret;
+
+ CHECK_INMAX(in_len)
+
+ FILL_IN_INPUT(data)
+
+ if (p->style->human_ttl) {
+ // Write time in human readable format.
+ ret = knot_time_print_human(ntohl(data), p->out, p->out_max, true);
+ CHECK_RET_POSITIVE
+ } else {
+ // Write timestamp only.
+ ret = snprintf(p->out, p->out_max, "%u", ntohl(data));
+ CHECK_RET_OUTMAX_SNPRINTF
+ }
+ out_len = ret;
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_bitmap_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ int ret;
+ char type[32];
+ size_t i = 0;
+ size_t in_len = p->in_max;
+ size_t out_len = 0;
+
+ // Loop over bitmap window array (can be empty).
+ while (i < in_len) {
+ // First byte is window number.
+ uint8_t win = p->in[i++];
+
+ // Check window length (length must follow).
+ if (i >= in_len) {
+ p->ret = -1;
+ return;
+ }
+
+ // Second byte is window length.
+ uint8_t bitmap_len = p->in[i++];
+
+ // Check window length (len bytes must follow).
+ if (i + bitmap_len > in_len) {
+ p->ret = -1;
+ return;
+ }
+
+ // Bitmap processing.
+ for (size_t j = 0; j < (bitmap_len * 8); j++) {
+ if ((p->in[i + j / 8] & (128 >> (j % 8))) != 0) {
+ uint16_t type_num = win * 256 + j;
+
+ ret = knot_rrtype_to_string(type_num, type, sizeof(type));
+ CHECK_RET_POSITIVE
+
+ // Print type name to type list.
+ if (out_len > 0) {
+ ret = snprintf(p->out, p->out_max,
+ " %s", type);
+ } else {
+ ret = snprintf(p->out, p->out_max,
+ "%s", type);
+ }
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len += ret;
+ p->out += ret;
+ p->out_max -= ret;
+ }
+ }
+
+ i += bitmap_len;
+ }
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->total += out_len;
+}
+
+static void wire_dname_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ size_t in_len = knot_dname_size(p->in);
+ size_t out_len = 0;
+
+ CHECK_INMAX(in_len)
+
+ // Write dname string.
+ if (p->style->ascii_to_idn == NULL) {
+ char *dname_str = knot_dname_to_str(p->out, p->in, p->out_max);
+ if (dname_str == NULL) {
+ p->ret = -1;
+ return;
+ }
+ out_len = strlen(dname_str);
+ } else {
+ char *dname_str = knot_dname_to_str_alloc(p->in);
+ p->style->ascii_to_idn(&dname_str);
+
+ int ret = snprintf(p->out, p->out_max, "%s", dname_str);
+ free(dname_str);
+ CHECK_RET_OUTMAX_SNPRINTF
+ out_len = ret;
+ }
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+}
+
+static void wire_apl_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ struct in_addr addr4;
+ struct in6_addr addr6;
+ int ret;
+ size_t out_len = 0;
+
+ // Input check: family(2B) + prefix(1B) + afdlen(1B).
+ CHECK_INMAX(4)
+
+ // Read fixed size values.
+ uint16_t family = knot_wire_read_u16(p->in);
+ uint8_t prefix = *(p->in + 2);
+ uint8_t negation = *(p->in + 3) >> 7;
+ uint8_t afdlen = *(p->in + 3) & 0x7F;
+ p->in += 4;
+ p->in_max -= 4;
+
+ // Write negation mark.
+ if (negation != 0) {
+ dump_string(p, "!");
+ CHECK_PRET
+ }
+
+ // Write address family with colon.
+ ret = snprintf(p->out, p->out_max, "%u:", family);
+ CHECK_RET_OUTMAX_SNPRINTF
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+
+ // Write address.
+ switch (family) {
+ case 1:
+ memset(&addr4, 0, sizeof(addr4));
+
+ if (afdlen > sizeof(addr4.s_addr) || afdlen > p->in_max) {
+ p->ret = -1;
+ return;
+ }
+
+ if (memcpy(&(addr4.s_addr), p->in, afdlen) == NULL) {
+ p->ret = -1;
+ return;
+ }
+
+ // Write address.
+ if (knot_inet_ntop(AF_INET, &addr4, p->out, p->out_max) == NULL) {
+ p->ret = -1;
+ return;
+ }
+ out_len = strlen(p->out);
+
+ break;
+ case 2:
+ memset(&addr6, 0, sizeof(addr6));
+
+ if (afdlen > sizeof(addr6.s6_addr) || afdlen > p->in_max) {
+ p->ret = -1;
+ return;
+ }
+
+ if (memcpy(&(addr6.s6_addr), p->in, afdlen) == NULL) {
+ p->ret = -1;
+ return;
+ }
+
+ // Write address.
+ if (knot_inet_ntop(AF_INET6, &addr6, p->out, p->out_max) == NULL) {
+ p->ret = -1;
+ return;
+ }
+ out_len = strlen(p->out);
+
+ break;
+ default:
+ p->ret = -1;
+ return;
+ }
+ p->in += afdlen;
+ p->in_max -= afdlen;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+
+ // Write prefix length with forward slash.
+ ret = snprintf(p->out, p->out_max, "/%u", prefix);
+ CHECK_RET_OUTMAX_SNPRINTF
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+}
+
+static void wire_loc_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ // Read values.
+ wire_ctx_t wire = wire_ctx_init_const(p->in, p->in_max);
+ uint8_t version = wire_ctx_read_u8(&wire);
+
+ // Version check.
+ if (version != 0) {
+ wire_unknown_to_str(p);
+ p->ret = -1;
+ return;
+ }
+
+ // Continue to read values.
+ uint8_t size_w = wire_ctx_read_u8(&wire);
+ uint8_t hpre_w = wire_ctx_read_u8(&wire);
+ uint8_t vpre_w = wire_ctx_read_u8(&wire);
+ uint32_t lat_w = wire_ctx_read_u32(&wire);
+ uint32_t lon_w = wire_ctx_read_u32(&wire);
+ uint32_t alt_w = wire_ctx_read_u32(&wire);
+
+ // Check if all reads are correct.
+ if (wire.error != KNOT_EOK) {
+ p->ret = -1;
+ return;
+ }
+
+ p->in += wire_ctx_offset(&wire);
+ p->in_max = wire_ctx_available(&wire);
+
+ // Latitude calculation.
+ char lat_mark;
+ uint32_t lat;
+ if (lat_w >= LOC_ZERO) {
+ lat_mark = 'N';
+ lat = lat_w - LOC_ZERO;
+ } else {
+ lat_mark = 'S';
+ lat = LOC_ZERO - lat_w;
+ }
+
+ uint32_t d1 = lat / 3600000;
+ uint32_t m1 = (lat - 3600000 * d1) / 60000;
+ double s1 = 0.001 * (lat - 3600000 * d1 - 60000 * m1);
+
+ // Longitude calculation.
+ char lon_mark;
+ uint32_t lon;
+ if (lon_w >= LOC_ZERO) {
+ lon_mark = 'E';
+ lon = lon_w - LOC_ZERO;
+ } else {
+ lon_mark = 'W';
+ lon = LOC_ZERO - lon_w;
+ }
+
+ uint32_t d2 = lon / 3600000;
+ uint32_t m2 = (lon - 3600000 * d2) / 60000;
+ double s2 = 0.001 * (lon - 3600000 * d2 - 60000 * m2);
+
+ // Write latitude and longitude.
+ int ret = snprintf(p->out, p->out_max, "%u %u %.*f %c %u %u %.*f %c",
+ d1, m1, (uint32_t)s1 != s1 ? 3 : 0, s1, lat_mark,
+ d2, m2, (uint32_t)s2 != s2 ? 3 : 0, s2, lon_mark);
+ CHECK_RET_OUTMAX_SNPRINTF
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+
+ // Altitude calculation.
+ double alt = 0.01 * alt_w - 100000.0;
+
+ // Compute mantissa and exponent for each size.
+ uint8_t size_m = size_w >> 4;
+ uint8_t size_e = size_w & 0xF;
+ uint8_t hpre_m = hpre_w >> 4;
+ uint8_t hpre_e = hpre_w & 0xF;
+ uint8_t vpre_m = vpre_w >> 4;
+ uint8_t vpre_e = vpre_w & 0xF;
+
+ // Sizes check.
+ if (size_m > 9 || size_e > 9 || hpre_m > 9 || hpre_e > 9 ||
+ vpre_m > 9 || vpre_e > 9) {
+ p->ret = -1;
+ return;
+ }
+
+ // Size and precisions calculation.
+ double size = 0.01 * size_m * pow(10, size_e);
+ double hpre = 0.01 * hpre_m * pow(10, hpre_e);
+ double vpre = 0.01 * vpre_m * pow(10, vpre_e);
+
+ // Write altitude and precisions.
+ ret = snprintf(p->out, p->out_max, " %.*fm %.*fm %.*fm %.*fm",
+ (int32_t)alt != alt ? 2 : 0, alt,
+ (uint32_t)size != size ? 2 : 0, size,
+ (uint32_t)hpre != hpre ? 2 : 0, hpre,
+ (uint32_t)vpre != vpre ? 2 : 0, vpre);
+ CHECK_RET_OUTMAX_SNPRINTF
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+}
+
+static void wire_gateway_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ // Input check: type(1B) + algo(1B).
+ CHECK_INMAX(2)
+
+ uint8_t type = *p->in;
+ uint8_t alg = *(p->in + 1);
+
+ // Write gateway type.
+ wire_num8_to_str(p);
+ CHECK_PRET
+
+ // Write space.
+ dump_string(p, " ");
+ CHECK_PRET
+
+ // Write algorithm number.
+ wire_num8_to_str(p);
+ CHECK_PRET
+
+ // Write space.
+ dump_string(p, " ");
+ CHECK_PRET
+
+ // Write appropriate gateway.
+ switch (type) {
+ case 0:
+ dump_string(p, ".");
+ break;
+ case 1:
+ wire_ipv4_to_str(p);
+ break;
+ case 2:
+ wire_ipv6_to_str(p);
+ break;
+ case 3:
+ wire_dname_to_str(p);
+ break;
+ default:
+ p->ret = -1;
+ }
+ CHECK_PRET
+
+ if (alg > 0) {
+ // If wrap mode wrap line.
+ if (p->style->wrap) {
+ dump_string(p, BLOCK_INDENT);
+ } else {
+ dump_string(p, " ");
+ }
+ CHECK_PRET
+
+ // Write ipsec key.
+ wire_data_encode_to_str(p, &knot_base64_encode, &knot_base64_encode_alloc);
+ CHECK_PRET
+ }
+}
+
+static void wire_l64_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ // Check input size (64-bit identifier).
+ if (p->in_max != 8) {
+ p->ret = -1;
+ return;
+ }
+
+ // Write identifier (2-byte) labels separated with a colon.
+ while (p->in_max > 0) {
+ int ret = hex_encode(p->in, 2, (uint8_t *)(p->out), p->out_max);
+ CHECK_RET_POSITIVE
+ p->in += 2;
+ p->in_max -= 2;
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+
+ // Write separation character.
+ if (p->in_max > 0) {
+ dump_string(p, ":");
+ CHECK_PRET
+ }
+ }
+}
+
+static void wire_eui_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ CHECK_INMAX(2)
+
+ // Write EUI hexadecimal pairs.
+ while (p->in_max > 0) {
+ int ret = hex_encode(p->in, 1, (uint8_t *)(p->out), p->out_max);
+ CHECK_RET_POSITIVE
+ p->in++;
+ p->in_max--;
+ p->out += ret;
+ p->out_max -= ret;
+ p->total += ret;
+
+ // Write separation character.
+ if (p->in_max > 0) {
+ dump_string(p, "-");
+ CHECK_PRET
+ }
+ }
+}
+
+static void wire_tsig_rcode_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ uint16_t data;
+ size_t in_len = sizeof(data);
+ const char *rcode_str = "Unknown";
+
+ CHECK_INMAX(in_len)
+
+ // Fill in input data.
+ data = knot_wire_read_u16(p->in);
+
+ // Find RCODE name.
+ const knot_lookup_t *rcode = NULL;
+ rcode = knot_lookup_by_id(knot_tsig_rcode_names, data);
+ if (rcode == NULL) {
+ rcode = knot_lookup_by_id(knot_rcode_names, data);
+ }
+ if (rcode != NULL) {
+ rcode_str = rcode->name;
+ }
+
+ // Dump RCODE name.
+ dump_string(p, rcode_str);
+ CHECK_PRET
+
+ // Fill in output.
+ p->in += in_len;
+ p->in_max -= in_len;
+}
+
+static void wire_svcb_paramkey_to_str(rrset_dump_params_t *p)
+{
+ uint16_t param_key = knot_wire_read_u16(p->in);
+ const knot_lookup_t *type = knot_lookup_by_id(knot_svcb_param_names, param_key);
+
+ if (type != NULL) {
+ dump_string(p, type->name);
+ CHECK_PRET
+ p->in += sizeof(param_key);
+ p->in_max -= sizeof(param_key);
+ } else {
+ dump_string(p, "key");
+ CHECK_PRET
+ wire_num16_to_str(p);
+ CHECK_PRET
+ }
+}
+
+static void wire_value_list_to_str(rrset_dump_params_t *p,
+ void (*list_item_dump_fcn)(rrset_dump_params_t *p),
+ const uint8_t *expect_end)
+{
+ bool first = true;
+
+ while (expect_end > p->in) {
+ if (first) {
+ first = false;
+ } else {
+ dump_string(p, ",");
+ CHECK_PRET
+ }
+
+ list_item_dump_fcn(p);
+ CHECK_PRET
+ }
+ if (expect_end != p->in) {
+ p->ret = -1;
+ }
+}
+
+static void wire_text_to_str1(rrset_dump_params_t *p)
+{
+ wire_text_to_str(p, false, 1, true);
+}
+
+static void wire_ech_to_base64(rrset_dump_params_t *p, unsigned ech_len)
+{
+ CHECK_INMAX(ech_len)
+
+ int ret = knot_base64_encode(p->in, ech_len, (uint8_t *)(p->out), p->out_max);
+ CHECK_RET_POSITIVE
+ size_t out_len = ret;
+
+ p->in += ech_len;
+ p->in_max -= ech_len;
+ p->out += out_len;
+ p->out_max -= out_len;
+ p->total += out_len;
+
+ STRING_TERMINATION
+}
+
+static void wire_svcparam_to_str(rrset_dump_params_t *p)
+{
+ CHECK_PRET
+
+ CHECK_INMAX(4)
+
+ // Pre-fetch key and length for later use.
+ uint16_t key_type = knot_wire_read_u16(p->in);
+ uint16_t val_len = knot_wire_read_u16(p->in + sizeof(key_type));
+
+ wire_svcb_paramkey_to_str(p);
+
+ p->in += sizeof(val_len);
+ p->in_max -= sizeof(val_len);
+ CHECK_INMAX(val_len)
+
+ if (val_len > 0) {
+ dump_string(p, "=");
+ CHECK_PRET
+
+ switch (key_type) {
+ case KNOT_SVCB_PARAM_MANDATORY:
+ wire_value_list_to_str(p, wire_svcb_paramkey_to_str, p->in + val_len);
+ break;
+ case KNOT_SVCB_PARAM_ALPN:
+ wire_value_list_to_str(p, wire_text_to_str1, p->in + val_len);
+ break;
+ case KNOT_SVCB_PARAM_NDALPN:
+ p->ret = -1; // must not have value
+ break;
+ case KNOT_SVCB_PARAM_PORT:
+ if (val_len != sizeof(uint16_t)) {
+ p->ret = -1;
+ } else {
+ wire_num16_to_str(p);
+ }
+ break;
+ case KNOT_SVCB_PARAM_IPV4HINT:
+ wire_value_list_to_str(p, wire_ipv4_to_str, p->in + val_len);
+ break;
+ case KNOT_SVCB_PARAM_ECH:
+ wire_ech_to_base64(p, val_len);
+ break;
+ case KNOT_SVCB_PARAM_IPV6HINT:
+ wire_value_list_to_str(p, wire_ipv6_to_str, p->in + val_len);
+ break;
+ default:
+ p->in -= sizeof(val_len); // Rollback to where the string length resides.
+ p->in_max += sizeof(val_len);
+ wire_text_to_str(p, true, sizeof(val_len), false);
+ }
+ }
+}
+
+static size_t dnskey_len(const uint8_t *rdata,
+ const size_t rdata_len)
+{
+ // Check for empty rdata and empty key.
+ if (rdata_len <= 4) {
+ return 0;
+ }
+
+ const uint8_t *key = rdata + 4;
+ const size_t len = rdata_len - 4;
+
+ switch (rdata[3]) {
+ case DNSSEC_KEY_ALGORITHM_DSA:
+ case DNSSEC_KEY_ALGORITHM_DSA_NSEC3_SHA1:
+ // RFC 2536, key size ~ bit-length of 'modulus' P.
+ return (64 + 8 * key[0]) * 8;
+ case DNSSEC_KEY_ALGORITHM_RSA_MD5:
+ case DNSSEC_KEY_ALGORITHM_RSA_SHA1:
+ case DNSSEC_KEY_ALGORITHM_RSA_SHA1_NSEC3:
+ case DNSSEC_KEY_ALGORITHM_RSA_SHA256:
+ case DNSSEC_KEY_ALGORITHM_RSA_SHA512:
+ // RFC 3110, key size ~ bit-length of 'modulus'.
+ if (key[0] == 0) {
+ if (len < 3) {
+ return 0;
+ }
+ uint16_t exp;
+ memcpy(&exp, key + 1, sizeof(uint16_t));
+ return (len - 3 - ntohs(exp)) * 8;
+ } else {
+ return (len - 1 - key[0]) * 8;
+ }
+ case DNSSEC_KEY_ALGORITHM_ECC_GOST:
+ // RFC 5933, key size of GOST public keys MUST be 512 bits.
+ return 512;
+ case DNSSEC_KEY_ALGORITHM_ECDSA_P256_SHA256:
+ // RFC 6605.
+ return 256;
+ case DNSSEC_KEY_ALGORITHM_ECDSA_P384_SHA384:
+ // RFC 6605.
+ return 384;
+ case DNSSEC_KEY_ALGORITHM_ED25519:
+ // RFC 8080.
+ return 256;
+ case DNSSEC_KEY_ALGORITHM_ED448:
+ // RFC 8080.
+ return 456;
+ default:
+ return 0;
+ }
+}
+
+static int ber_to_oid(char *dst,
+ size_t dst_len,
+ const uint8_t *src,
+ const size_t src_len)
+{
+ assert(dst);
+ assert(src);
+
+ static const uint8_t longer_mask = (1 << 7);
+
+ size_t len = src[0];
+ if (len == 0 || len >= src_len || dst_len == 0) {
+ return KNOT_EINVAL;
+ }
+
+ uint64_t node = 0UL;
+ for (int i = 1; i <= len; ++i) {
+ uint8_t longer_node = (src[i] & longer_mask);
+ node <<= 7;
+ node += (longer_node ^ src[i]);
+ if (!longer_node) {
+ int ret = snprintf(dst, dst_len, "%"PRIu64".", node);
+ SNPRINTF_CHECK(ret, dst_len);
+ dst += ret;
+ dst_len -= ret;
+ node = 0UL;
+ }
+ }
+ *(dst - 1) = '\0';
+
+ return KNOT_EOK;
+}
+
+static void dnskey_info(const uint8_t *rdata,
+ const size_t rdata_len,
+ char *out,
+ const size_t out_len)
+{
+ if (rdata_len < 5) {
+ return;
+ }
+
+ const uint8_t sep = *(rdata + 1) & 0x01;
+ uint16_t key_tag = 0;
+ const size_t key_len = dnskey_len(rdata, rdata_len);
+ const uint8_t alg_id = rdata[3];
+ char alg_info[512] = "";
+
+ const dnssec_binary_t rdata_bin = { .data = (uint8_t *)rdata,
+ .size = rdata_len };
+ dnssec_keytag(&rdata_bin, &key_tag);
+
+ const knot_lookup_t *alg = knot_lookup_by_id(knot_dnssec_alg_names, alg_id);
+
+ switch (alg_id) {
+ case DNSSEC_KEY_ALGORITHM_DELETE:
+ case DNSSEC_KEY_ALGORITHM_INDIRECT:
+ break;
+ case DNSSEC_KEY_ALGORITHM_PRIVATEOID:
+ ; char oid_str[sizeof(alg_info) - 3];
+ if (ber_to_oid(oid_str, sizeof(oid_str), rdata + 4, rdata_len - 4) != KNOT_EOK ||
+ snprintf(alg_info, sizeof(alg_info), " (%s)", oid_str) <= 0) {
+ alg_info[0] = '\0';
+ }
+ break;
+ case DNSSEC_KEY_ALGORITHM_PRIVATEDNS:
+ ; knot_dname_txt_storage_t alg_str;
+ if (knot_dname_wire_check(rdata + 4, rdata + rdata_len, NULL) <= 0 ||
+ knot_dname_to_str(alg_str, rdata + 4, sizeof(alg_str)) == NULL ||
+ snprintf(alg_info, sizeof(alg_info), " (%s)", alg_str) <= 0) {
+ alg_info[0] = '\0';
+ }
+ break;
+ default:
+ if (snprintf(alg_info, sizeof(alg_info), " (%zub)", key_len) <= 0) {
+ alg_info[0] = '\0';
+ }
+ break;
+ }
+
+ int ret = snprintf(out, out_len, "%s, %s%s, id = %u",
+ sep ? "KSK" : "ZSK",
+ alg ? alg->name : "UNKNOWN",
+ alg_info,
+ key_tag);
+ if (ret <= 0) { // Truncated return is acceptable. Just check for errors.
+ out[0] = '\0';
+ }
+}
+
+#define DUMP_PARAMS rrset_dump_params_t *const p
+#define DUMP_END return (p->in_max == 0 ? (int)p->total : KNOT_EPARSEFAIL);
+
+#define CHECK_RET(p) if (p->ret < 0) return p->ret;
+
+#define WRAP_INIT dump_string(p, "(" BLOCK_INDENT); CHECK_RET(p);
+#define WRAP_END dump_string(p, BLOCK_INDENT ")"); CHECK_RET(p);
+#define WRAP_LINE dump_string(p, BLOCK_INDENT); CHECK_RET(p);
+
+#define COMMENT(s) if (p->style->verbose) { \
+ dump_string(p, " ; "); CHECK_RET(p); \
+ dump_string(p, s); CHECK_RET(p); \
+ }
+
+#define STORE_TIME if (p->style->verbose) { \
+ time = wire_time_to_val(p); CHECK_RET(p); \
+ }
+#define COMMENT_TIME(s) if (p->style->verbose) { \
+ char buf[80]; \
+ dump_string(p, " ; "); CHECK_RET(p); \
+ dump_string(p, s); CHECK_RET(p); \
+ if (knot_time_print_human(time, buf, sizeof(buf), false) > 0) { \
+ dump_string(p, " ("); CHECK_RET(p); \
+ dump_string(p, buf); CHECK_RET(p); \
+ dump_string(p, ")"); CHECK_RET(p); \
+ } \
+ }
+
+#define DUMP_SPACE dump_string(p, " "); CHECK_RET(p);
+#define DUMP_NUM8 wire_num8_to_str(p); CHECK_RET(p);
+#define DUMP_NUM16 wire_num16_to_str(p); CHECK_RET(p);
+#define DUMP_NUM32 wire_num32_to_str(p); CHECK_RET(p);
+#define DUMP_NUM48 wire_num48_to_str(p); CHECK_RET(p);
+#define DUMP_DNAME wire_dname_to_str(p); CHECK_RET(p);
+#define DUMP_TIME wire_ttl_to_str(p); CHECK_RET(p);
+#define DUMP_TIMESTAMP wire_timestamp_to_str(p); CHECK_RET(p);
+#define DUMP_IPV4 wire_ipv4_to_str(p); CHECK_RET(p);
+#define DUMP_IPV6 wire_ipv6_to_str(p); CHECK_RET(p);
+#define DUMP_TYPE wire_type_to_str(p); CHECK_RET(p);
+#define DUMP_HEX wire_data_encode_to_str(p, &hex_encode, \
+ &hex_encode_alloc); CHECK_RET(p);
+#define DUMP_BASE64 wire_data_encode_to_str(p, &knot_base64_encode, \
+ &knot_base64_encode_alloc); CHECK_RET(p);
+#define DUMP_HASH wire_len_data_encode_to_str(p, &knot_base32hex_encode, \
+ 1, false, ""); CHECK_RET(p);
+#define DUMP_SALT wire_len_data_encode_to_str(p, &hex_encode, \
+ 1, false, "-"); CHECK_RET(p);
+#define DUMP_TSIG_DGST wire_len_data_encode_to_str(p, &knot_base64_encode, \
+ 2, true, ""); CHECK_RET(p);
+#define DUMP_TSIG_DATA wire_len_data_encode_to_str(p, &num48_encode, \
+ 2, true, ""); CHECK_RET(p);
+#define DUMP_OMIT wire_data_omit(p); CHECK_RET(p);
+#define DUMP_KEY_OMIT wire_dnskey_to_tag(p); CHECK_RET(p);
+#define DUMP_TEXT wire_text_to_str(p, true, 1, false); CHECK_RET(p);
+#define DUMP_LONG_TEXT wire_text_to_str(p, true, 0, false); CHECK_RET(p);
+#define DUMP_UNQUOTED wire_text_to_str(p, false, 1, false); CHECK_RET(p);
+#define DUMP_BITMAP wire_bitmap_to_str(p); CHECK_RET(p);
+#define DUMP_APL wire_apl_to_str(p); CHECK_RET(p);
+#define DUMP_LOC wire_loc_to_str(p); CHECK_RET(p);
+#define DUMP_GATEWAY wire_gateway_to_str(p); CHECK_RET(p);
+#define DUMP_L64 wire_l64_to_str(p); CHECK_RET(p);
+#define DUMP_EUI wire_eui_to_str(p); CHECK_RET(p);
+#define DUMP_TSIG_RCODE wire_tsig_rcode_to_str(p); CHECK_RET(p);
+#define DUMP_SVCPARAM wire_svcparam_to_str(p); CHECK_RET(p);
+#define DUMP_UNKNOWN wire_unknown_to_str(p); CHECK_RET(p);
+
+static int dump_a(DUMP_PARAMS)
+{
+ DUMP_IPV4;
+
+ DUMP_END;
+}
+
+static int dump_ns(DUMP_PARAMS)
+{
+ DUMP_DNAME;
+
+ DUMP_END;
+}
+
+static int dump_soa(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ uint32_t time = 0;
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_DNAME; DUMP_SPACE; WRAP_INIT;
+ DUMP_NUM32; COMMENT("serial"); WRAP_LINE;
+ STORE_TIME; DUMP_TIME; COMMENT_TIME("refresh"); WRAP_LINE;
+ STORE_TIME; DUMP_TIME; COMMENT_TIME("retry"); WRAP_LINE;
+ STORE_TIME; DUMP_TIME; COMMENT_TIME("expire"); WRAP_LINE;
+ STORE_TIME; DUMP_TIME; COMMENT_TIME("minimum"); WRAP_END;
+ } else {
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_NUM32; DUMP_SPACE;
+ DUMP_TIME; DUMP_SPACE;
+ DUMP_TIME; DUMP_SPACE;
+ DUMP_TIME; DUMP_SPACE;
+ DUMP_TIME;
+ }
+
+ DUMP_END;
+}
+
+static int dump_hinfo(DUMP_PARAMS)
+{
+ DUMP_TEXT; DUMP_SPACE;
+ DUMP_TEXT;
+
+ DUMP_END;
+}
+
+static int dump_minfo(DUMP_PARAMS)
+{
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_DNAME;
+
+ DUMP_END;
+}
+
+static int dump_mx(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_DNAME;
+
+ DUMP_END;
+}
+
+static int dump_txt(DUMP_PARAMS)
+{
+ // First text string.
+ DUMP_TEXT;
+
+ // Other text strings if any.
+ while (p->in_max > 0) {
+ DUMP_SPACE; DUMP_TEXT;
+ }
+
+ DUMP_END;
+}
+
+static int dump_dnskey(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ char info[512] = "";
+ dnskey_info(p->in, p->in_max, info, sizeof(info));
+
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ if (p->style->hide_crypto) {
+ DUMP_OMIT;
+ WRAP_LINE;
+ } else {
+ WRAP_INIT;
+ DUMP_BASE64;
+ WRAP_END;
+ }
+ COMMENT(info);
+ } else {
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ if (p->style->hide_crypto) {
+ DUMP_KEY_OMIT;
+ } else {
+ DUMP_BASE64;
+ }
+ }
+
+ DUMP_END;
+}
+
+static int dump_aaaa(DUMP_PARAMS)
+{
+ DUMP_IPV6;
+
+ DUMP_END;
+}
+
+static int dump_loc(DUMP_PARAMS)
+{
+ DUMP_LOC;
+
+ DUMP_END;
+}
+
+static int dump_srv(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_DNAME;
+
+ DUMP_END;
+}
+
+static int dump_naptr(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_TEXT; DUMP_SPACE;
+ DUMP_TEXT; DUMP_SPACE;
+ DUMP_TEXT; DUMP_SPACE;
+ DUMP_DNAME;
+
+ DUMP_END;
+}
+
+static int dump_cert(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_BASE64;
+ WRAP_END;
+ } else {
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_BASE64;
+ }
+
+ DUMP_END;
+}
+
+static int dump_apl(DUMP_PARAMS)
+{
+ // Print list of APLs (empty list is allowed).
+ while (p->in_max > 0) {
+ if (p->total > 0) {
+ DUMP_SPACE;
+ }
+ DUMP_APL;
+ }
+
+ DUMP_END;
+}
+
+static int dump_ds(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_HEX;
+ WRAP_END;
+ } else {
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_HEX;
+ }
+
+ DUMP_END;
+}
+
+static int dump_sshfp(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_HEX;
+ WRAP_END;
+ } else {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_HEX;
+ }
+
+ DUMP_END;
+}
+
+static int dump_ipseckey(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_GATEWAY;
+ WRAP_END;
+ } else {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_GATEWAY;
+ }
+
+ DUMP_END;
+}
+
+static int dump_rrsig(DUMP_PARAMS)
+{
+ DUMP_TYPE; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM32; DUMP_SPACE;
+ DUMP_TIMESTAMP; DUMP_SPACE;
+ if (p->style->wrap) {
+ WRAP_INIT;
+ }
+ DUMP_TIMESTAMP; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_DNAME;
+ if (p->style->wrap) {
+ WRAP_LINE;
+ } else {
+ DUMP_SPACE;
+ }
+ if (p->style->hide_crypto) {
+ DUMP_OMIT;
+ } else {
+ DUMP_BASE64;
+ }
+ if (p->style->wrap) {
+ WRAP_END;
+ }
+ DUMP_END;
+}
+
+static int dump_nsec(DUMP_PARAMS)
+{
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_BITMAP;
+
+ DUMP_END;
+}
+
+static int dump_dhcid(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ WRAP_INIT;
+ DUMP_BASE64;
+ WRAP_END;
+ } else {
+ DUMP_BASE64;
+ }
+
+ DUMP_END;
+}
+
+static int dump_nsec3(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_SALT; DUMP_SPACE; WRAP_INIT;
+ DUMP_HASH; WRAP_LINE;
+ DUMP_BITMAP;
+ WRAP_END;
+ } else {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_SALT; DUMP_SPACE;
+ DUMP_HASH; DUMP_SPACE;
+ DUMP_BITMAP;
+ }
+
+ DUMP_END;
+}
+
+static int dump_nsec3param(DUMP_PARAMS)
+{
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_SALT;
+
+ DUMP_END;
+}
+
+static int dump_tlsa(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_HEX;
+ WRAP_END;
+ } else {
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_HEX;
+ }
+
+ DUMP_END;
+}
+
+static int dump_csync(DUMP_PARAMS)
+{
+ DUMP_NUM32; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_BITMAP;
+
+ DUMP_END;
+}
+
+static int dump_zonemd(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_NUM32; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE; WRAP_INIT;
+ DUMP_HEX;
+ WRAP_END;
+ } else {
+ DUMP_NUM32; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_HEX;
+ }
+
+ DUMP_END;
+}
+
+static int dump_l64(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_L64;
+
+ DUMP_END;
+}
+
+static int dump_l32(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_IPV4;
+
+ DUMP_END;
+}
+
+static int dump_eui(DUMP_PARAMS)
+{
+ DUMP_EUI;
+
+ DUMP_END;
+}
+
+static int dump_tsig(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_NUM48; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE; WRAP_INIT;
+ DUMP_TSIG_DGST; WRAP_LINE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_TSIG_RCODE; DUMP_SPACE;
+ DUMP_TSIG_DATA;
+ WRAP_END;
+ } else {
+ DUMP_DNAME; DUMP_SPACE;
+ DUMP_NUM48; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_TSIG_DGST; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_TSIG_RCODE; DUMP_SPACE;
+ DUMP_TSIG_DATA;
+ }
+
+ DUMP_END;
+}
+
+static int dump_uri(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_LONG_TEXT; DUMP_SPACE;
+
+ DUMP_END;
+}
+
+static int dump_caa(DUMP_PARAMS)
+{
+ DUMP_NUM8; DUMP_SPACE;
+ DUMP_UNQUOTED; DUMP_SPACE;
+ DUMP_LONG_TEXT; DUMP_SPACE;
+
+ DUMP_END;
+}
+
+static int dump_svcb(DUMP_PARAMS)
+{
+ DUMP_NUM16; DUMP_SPACE;
+ DUMP_DNAME;
+ if (p->style->wrap) {
+ if (p->in_max > 0) {
+ DUMP_SPACE;
+ WRAP_INIT;
+ DUMP_SVCPARAM;
+ while (p->in_max > 0) {
+ WRAP_LINE; DUMP_SVCPARAM;
+ }
+ WRAP_END;
+ }
+ } else {
+ while (p->in_max > 0) {
+ DUMP_SPACE;
+ DUMP_SVCPARAM;
+ }
+ }
+
+ DUMP_END;
+}
+
+static int dump_unknown(DUMP_PARAMS)
+{
+ if (p->style->wrap) {
+ WRAP_INIT;
+ DUMP_UNKNOWN;
+ WRAP_END;
+ } else {
+ DUMP_UNKNOWN;
+ }
+
+ DUMP_END;
+}
+
+static int txt_dump_data(rrset_dump_params_t *p, uint16_t type)
+{
+ switch (type) {
+ case KNOT_RRTYPE_A:
+ return dump_a(p);
+ case KNOT_RRTYPE_NS:
+ case KNOT_RRTYPE_CNAME:
+ case KNOT_RRTYPE_PTR:
+ case KNOT_RRTYPE_DNAME:
+ return dump_ns(p);
+ case KNOT_RRTYPE_SOA:
+ return dump_soa(p);
+ case KNOT_RRTYPE_HINFO:
+ return dump_hinfo(p);
+ case KNOT_RRTYPE_MINFO:
+ case KNOT_RRTYPE_RP:
+ return dump_minfo(p);
+ case KNOT_RRTYPE_MX:
+ case KNOT_RRTYPE_AFSDB:
+ case KNOT_RRTYPE_RT:
+ case KNOT_RRTYPE_KX:
+ case KNOT_RRTYPE_LP:
+ return dump_mx(p);
+ case KNOT_RRTYPE_TXT:
+ case KNOT_RRTYPE_SPF:
+ return dump_txt(p);
+ case KNOT_RRTYPE_KEY:
+ case KNOT_RRTYPE_DNSKEY:
+ case KNOT_RRTYPE_CDNSKEY:
+ return dump_dnskey(p);
+ case KNOT_RRTYPE_AAAA:
+ return dump_aaaa(p);
+ case KNOT_RRTYPE_LOC:
+ return dump_loc(p);
+ case KNOT_RRTYPE_SRV:
+ return dump_srv(p);
+ case KNOT_RRTYPE_NAPTR:
+ return dump_naptr(p);
+ case KNOT_RRTYPE_CERT:
+ return dump_cert(p);
+ case KNOT_RRTYPE_APL:
+ return dump_apl(p);
+ case KNOT_RRTYPE_DS:
+ case KNOT_RRTYPE_CDS:
+ return dump_ds(p);
+ case KNOT_RRTYPE_SSHFP:
+ return dump_sshfp(p);
+ case KNOT_RRTYPE_IPSECKEY:
+ return dump_ipseckey(p);
+ case KNOT_RRTYPE_RRSIG:
+ return dump_rrsig(p);
+ case KNOT_RRTYPE_NSEC:
+ return dump_nsec(p);
+ case KNOT_RRTYPE_DHCID:
+ case KNOT_RRTYPE_OPENPGPKEY:
+ return dump_dhcid(p);
+ case KNOT_RRTYPE_NSEC3:
+ return dump_nsec3(p);
+ case KNOT_RRTYPE_NSEC3PARAM:
+ return dump_nsec3param(p);
+ case KNOT_RRTYPE_TLSA:
+ case KNOT_RRTYPE_SMIMEA:
+ return dump_tlsa(p);
+ case KNOT_RRTYPE_CSYNC:
+ return dump_csync(p);
+ case KNOT_RRTYPE_ZONEMD:
+ return dump_zonemd(p);
+ case KNOT_RRTYPE_NID:
+ case KNOT_RRTYPE_L64:
+ return dump_l64(p);
+ case KNOT_RRTYPE_L32:
+ return dump_l32(p);
+ case KNOT_RRTYPE_EUI48:
+ case KNOT_RRTYPE_EUI64:
+ return dump_eui(p);
+ case KNOT_RRTYPE_TSIG:
+ return dump_tsig(p);
+ case KNOT_RRTYPE_URI:
+ return dump_uri(p);
+ case KNOT_RRTYPE_CAA:
+ return dump_caa(p);
+ case KNOT_RRTYPE_SVCB:
+ case KNOT_RRTYPE_HTTPS:
+ return dump_svcb(p);
+ default:
+ return dump_unknown(p);
+ }
+}
+
+_public_
+int knot_rrset_txt_dump_data(const knot_rrset_t *rrset,
+ const size_t pos,
+ char *dst,
+ const size_t maxlen,
+ const knot_dump_style_t *style)
+{
+ if (rrset == NULL || dst == NULL || style == NULL) {
+ return KNOT_EINVAL;
+ }
+
+ knot_rdata_t *rr_data = knot_rdataset_at(&rrset->rrs, pos);
+ if (rr_data == NULL) {
+ return KNOT_EINVAL; /* bad pos or rrset->rrs */
+ }
+
+ uint8_t *data = rr_data->data;
+ uint16_t data_len = rr_data->len;
+
+ rrset_dump_params_t p = {
+ .style = style,
+ .in = data,
+ .in_max = data_len,
+ .out = dst,
+ .out_max = maxlen,
+ .total = 0,
+ .ret = 0
+ };
+
+ int ret;
+
+ // Allow empty rdata with the CH class (knsupdate).
+ if (data_len == 0 && rrset->rclass != KNOT_CLASS_IN) {
+ ret = 0;
+ } else if (style->generic) {
+ ret = dump_unknown(&p);
+ } else {
+ ret = txt_dump_data(&p, rrset->type);
+ }
+
+ // Terminate the string just in case.
+ if (ret < 0 || ret >= maxlen) {
+ return KNOT_ESPACE;
+ }
+ dst[ret] = '\0';
+
+ return ret;
+}
+
+_public_
+int knot_rrset_txt_dump_header(const knot_rrset_t *rrset,
+ const uint32_t ttl,
+ char *dst,
+ const size_t maxlen,
+ const knot_dump_style_t *style)
+{
+ if (rrset == NULL || dst == NULL || style == NULL) {
+ return KNOT_EINVAL;
+ }
+
+ size_t len = 0;
+ char buf[32];
+ int ret;
+
+ // Dump rrset owner.
+ char *name = knot_dname_to_str_alloc(rrset->owner);
+ if (style->ascii_to_idn != NULL) {
+ style->ascii_to_idn(&name);
+ }
+ char sep = strlen(name) < 4 * TAB_WIDTH ? '\t' : ' ';
+ ret = snprintf(dst + len, maxlen - len, "%-20s%c", name, sep);
+ free(name);
+ SNPRINTF_CHECK(ret, maxlen - len);
+ len += ret;
+
+ // Set white space separation character.
+ sep = style->wrap ? ' ' : '\t';
+
+ // Dump rrset ttl.
+ if (style->show_ttl) {
+ if (style->empty_ttl) {
+ ret = snprintf(dst + len, maxlen - len, "%c", sep);
+ } else if (style->human_ttl) {
+ // Create human readable ttl string.
+ if (knot_time_print_human(ttl, buf, sizeof(buf), true) < 0) {
+ return KNOT_ESPACE;
+ }
+ ret = snprintf(dst + len, maxlen - len, "%s%c",
+ buf, sep);
+ } else {
+ ret = snprintf(dst + len, maxlen - len, "%u%c", ttl, sep);
+ }
+ SNPRINTF_CHECK(ret, maxlen - len);
+ len += ret;
+ }
+
+ // Dump rrset class.
+ if (style->show_class) {
+ if (knot_rrclass_to_string(rrset->rclass, buf, sizeof(buf)) < 0) {
+ return KNOT_ESPACE;
+ }
+ ret = snprintf(dst + len, maxlen - len, "%-2s%c", buf, sep);
+ SNPRINTF_CHECK(ret, maxlen - len);
+ len += ret;
+ }
+
+ // Dump rrset type.
+ if (style->generic) {
+ if (snprintf(buf, sizeof(buf), "TYPE%u", rrset->type) < 0) {
+ return KNOT_ESPACE;
+ }
+ } else if (knot_rrtype_to_string(rrset->type, buf, sizeof(buf)) < 0) {
+ return KNOT_ESPACE;
+ }
+ if (rrset->rrs.count > 0) {
+ ret = snprintf(dst + len, maxlen - len, "%s%c", buf, sep);
+ } else {
+ ret = snprintf(dst + len, maxlen - len, "%s", buf);
+ }
+ SNPRINTF_CHECK(ret, maxlen - len);
+ len += ret;
+
+ return len;
+}
+
+static int rrset_txt_dump(const knot_rrset_t *rrset,
+ char *dst,
+ const size_t maxlen,
+ const knot_dump_style_t *style)
+{
+ if (rrset == NULL || dst == NULL || style == NULL) {
+ return KNOT_EINVAL;
+ }
+
+ size_t len = 0;
+ size_t color_len = (style->color != NULL ? strlen(style->color) : 0);
+ size_t reset_len = (color_len > 0 ? strlen(COL_RST(true)) : 0);
+
+ dst[0] = '\0';
+
+ // Loop over rdata in rrset.
+ uint16_t rr_count = rrset->rrs.count;
+ knot_rdata_t *rr = rrset->rrs.rdata;
+ for (uint16_t i = 0; i < rr_count; i++) {
+ // Put color prefix before every record.
+ if (color_len > 0) {
+ if (len >= maxlen - color_len) {
+ return KNOT_ESPACE;
+ }
+ memcpy(dst + len, style->color, color_len);
+ len += color_len;
+ }
+
+ // Dump rdata owner, class, ttl and type.
+ uint32_t ttl = ((style->original_ttl && rrset->type == KNOT_RRTYPE_RRSIG) ?
+ knot_rrsig_original_ttl(rr) : rrset->ttl);
+
+ int ret = knot_rrset_txt_dump_header(rrset, ttl, dst + len,
+ maxlen - len, style);
+ if (ret < 0) {
+ return KNOT_ESPACE;
+ }
+ len += ret;
+
+ // Dump rdata as such.
+ ret = knot_rrset_txt_dump_data(rrset, i, dst + len,
+ maxlen - len, style);
+ if (ret < 0) {
+ return KNOT_ESPACE;
+ }
+ len += ret;
+
+ // Reset the color.
+ if (reset_len > 0) {
+ if (len >= maxlen - reset_len) {
+ return KNOT_ESPACE;
+ }
+ memcpy(dst + len, COL_RST(true), reset_len);
+ len += reset_len;
+ }
+
+ // Terminate line.
+ if (len >= maxlen - 1) {
+ return KNOT_ESPACE;
+ }
+ dst[len++] = '\n';
+ dst[len] = '\0';
+
+ rr = knot_rdataset_next(rr);
+ }
+
+ return len;
+}
+
+_public_
+int knot_rrset_txt_dump(const knot_rrset_t *rrset,
+ char **dst,
+ size_t *dst_size,
+ const knot_dump_style_t *style)
+{
+ if (dst == NULL || dst_size == NULL) {
+ return KNOT_EINVAL;
+ }
+
+ while (1) {
+ int ret = rrset_txt_dump(rrset, *dst, *dst_size, style);
+ if (ret != KNOT_ESPACE) {
+ return ret;
+ }
+
+ size_t new_dst_size = 2 * (*dst_size);
+ if (new_dst_size > RRSET_DUMP_LIMIT) {
+ return KNOT_ESPACE;
+ }
+
+ char * new_dst = malloc(new_dst_size);
+ if (new_dst == NULL) {
+ return KNOT_ENOMEM;
+ }
+
+ free(*dst);
+ *dst = new_dst;
+ *dst_size = new_dst_size;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 04:20:22 +0000