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-rw-r--r--src/libzscanner/scanner_body.rl2326
1 files changed, 2326 insertions, 0 deletions
diff --git a/src/libzscanner/scanner_body.rl b/src/libzscanner/scanner_body.rl
new file mode 100644
index 0000000..34d51cd
--- /dev/null
+++ b/src/libzscanner/scanner_body.rl
@@ -0,0 +1,2326 @@
+/* Copyright (C) 2021 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/>.
+ */
+
+%%{
+ machine zone_scanner;
+
+ # Comeback function to calling state machine.
+ action _ret {
+ fhold; fret;
+ }
+
+ # BEGIN - Blank space processing
+ action _newline {
+ s->line_counter++;
+ }
+
+ action _check_multiline_begin {
+ if (s->multiline == true) {
+ ERR(ZS_LEFT_PARENTHESIS);
+ fhold; fgoto err_line;
+ }
+ s->multiline = true;
+ }
+ action _check_multiline_end {
+ if (s->multiline == false) {
+ ERR(ZS_RIGHT_PARENTHESIS);
+ fhold; fgoto err_line;
+ }
+ s->multiline = false;
+ }
+
+ action _comment_init {
+ s->buffer_length = 0;
+ }
+ action _comment {
+ if (s->buffer_length < sizeof(s->buffer) - 1) {
+ s->buffer[s->buffer_length++] = fc;
+ }
+ }
+ action _comment_exit {
+ s->buffer[s->buffer_length++] = 0;
+
+ // Execute the comment callback.
+ if (s->process.automatic && s->process.comment != NULL) {
+ s->process.comment(s);
+
+ // Stop if required from the callback.
+ if (s->state == ZS_STATE_STOP) {
+ fbreak;
+ }
+ }
+ }
+
+ action _rest_init {
+ s->buffer[0] = 0;
+ s->buffer_length = 0;
+ }
+ action _rest_error {
+ WARN(ZS_BAD_REST);
+ fhold; fgoto err_line;
+ }
+
+ newline = '\n' $_newline;
+ comment = (';' . (^newline)* $_comment) >_comment_init %_comment_exit;
+
+ # White space separation. With respect to parentheses and included comments.
+ sep = ( [ \t] # Blank characters.
+ | (comment? . newline) when { s->multiline } # Comment in multiline.
+ | '(' $_check_multiline_begin # Start of multiline.
+ | ')' $_check_multiline_end # End of multiline.
+ )+; # Apply more times.
+
+ rest = (sep? :> comment?) >_rest_init $!_rest_error; # Comments.
+
+ # Artificial machines which are used for next state transition only!
+ all_wchar = [ \t\n;()];
+ end_wchar = [\n;] when { !s->multiline }; # For noncontinuous ending tokens.
+ # END
+
+ # BEGIN - Error line processing
+ action _err_line_init {
+ s->buffer_length = 0;
+ }
+ action _err_line {
+ if (fc == '\r') {
+ ERR(ZS_DOS_NEWLINE);
+ }
+
+ if (s->buffer_length < sizeof(s->buffer) - 1) {
+ s->buffer[s->buffer_length++] = fc;
+ }
+ }
+ action _err_line_exit {
+ // Terminate the error context string.
+ s->buffer[s->buffer_length++] = 0;
+
+ // Error counter incrementation.
+ s->error.counter++;
+
+ // Initialize the fcall stack.
+ top = 0;
+
+ // Reset per-record contexts.
+ s->long_string = false;
+ s->comma_list = false;
+
+ s->state = ZS_STATE_ERROR;
+
+ // Execute the error callback.
+ if (s->process.automatic) {
+ fhold;
+ if (s->process.error != NULL) {
+ s->process.error(s);
+
+ // Stop if required from the callback.
+ if (s->state == ZS_STATE_STOP) {
+ fbreak;
+ }
+ }
+
+ // Stop the scanner if fatal error.
+ if (s->error.fatal) {
+ fbreak;
+ }
+ fgoto err_rest;
+ } else {
+ // Return if external processing.
+ fhold; fnext err_rest; fbreak;
+ }
+ }
+
+ # Consume rest lines of defective multiline record.
+ err_rest := ( (any - newline - ')')
+ | newline when { s->multiline }
+ | ')' when { s->multiline } $_check_multiline_end
+ )* %{ fhold; fcall main; } <: newline;
+
+ # Fill rest of the line to buffer and skip to main loop.
+ err_line := (^newline $_err_line)* >_err_line_init
+ %_err_line_exit . newline;
+ # END
+
+ # BEGIN - Domain name labels processing
+ action _label_init {
+ s->item_length = 0;
+ s->item_length_position = s->dname_tmp_length++;
+ }
+ action _label_char {
+ // Check for maximum dname label length.
+ if (s->item_length < ZS_MAX_LABEL_LENGTH) {
+ (s->dname)[s->dname_tmp_length++] = fc;
+ s->item_length++;
+ } else {
+ WARN(ZS_LABEL_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _label_exit {
+ // Check for maximum dname length overflow after each label.
+ // (at least the next label length must follow).
+ if (s->dname_tmp_length < ZS_MAX_DNAME_LENGTH) {
+ (s->dname)[s->item_length_position] =
+ (uint8_t)(s->item_length);
+ } else {
+ WARN(ZS_DNAME_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ action _label_dec_init {
+ if (s->item_length < ZS_MAX_LABEL_LENGTH) {
+ (s->dname)[s->dname_tmp_length] = 0;
+ s->item_length++;
+ } else {
+ WARN(ZS_LABEL_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _label_dec {
+ (s->dname)[s->dname_tmp_length] *= 10;
+ (s->dname)[s->dname_tmp_length] += digit_to_num[(uint8_t)fc];
+ }
+ action _label_dec_exit {
+ s->dname_tmp_length++;
+ }
+ action _label_dec_error {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+
+ label_char =
+ ( (alnum | [*\-_/]) $_label_char # One common char.
+ | ('\\' . ^digit) @_label_char # One "\x" char.
+ | ('\\' %_label_dec_init # Initial "\" char.
+ . digit {3} $_label_dec %_label_dec_exit # "DDD" rest.
+ $!_label_dec_error
+ )
+ );
+
+ label = label_char+ >_label_init %_label_exit;
+ labels = (label . '.')* . label;
+ # END
+
+ # BEGIN - Domain name processing.
+ action _absolute_dname_exit {
+ // Enough room for the terminal label is guaranteed (_label_exit).
+ (s->dname)[s->dname_tmp_length++] = 0;
+ }
+ action _relative_dname_exit {
+ // Check for (relative + origin) dname length overflow.
+ if (s->dname_tmp_length + s->zone_origin_length <= ZS_MAX_DNAME_LENGTH) {
+ memcpy(s->dname + s->dname_tmp_length,
+ s->zone_origin,
+ s->zone_origin_length);
+
+ s->dname_tmp_length += s->zone_origin_length;
+ } else {
+ WARN(ZS_DNAME_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _origin_dname_exit {
+ // Copy already verified zone origin.
+ memcpy(s->dname,
+ s->zone_origin,
+ s->zone_origin_length);
+
+ s->dname_tmp_length = s->zone_origin_length;
+ }
+
+ action _dname_init {
+ s->item_length_position = 0;
+ s->dname_tmp_length = 0;
+ }
+ action _dname_error {
+ WARN(ZS_BAD_DNAME_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ relative_dname = (labels ) >_dname_init %_relative_dname_exit;
+ absolute_dname = (labels? . '.') >_dname_init %_absolute_dname_exit;
+
+ dname_ := ( relative_dname
+ | absolute_dname
+ | '@' %_origin_dname_exit
+ ) $!_dname_error %_ret . all_wchar;
+ dname = (alnum | [\-_/\\] | [*.@]) ${ fhold; fcall dname_; };
+ # END
+
+ # BEGIN - Common r_data item processing
+ action _item_length_init {
+ if (rdata_tail <= rdata_stop) {
+ s->item_length_location = rdata_tail++;
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _item_length_exit {
+ s->item_length = rdata_tail - s->item_length_location - 1;
+ if (s->comma_list && s->item_length == 0) {
+ WARN(ZS_EMPTY_LIST_ITEM);
+ fhold; fgoto err_line;
+ }
+ if (s->item_length <= MAX_ITEM_LENGTH) {
+ *(s->item_length_location) = (uint8_t)(s->item_length);
+ } else {
+ WARN(ZS_ITEM_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _item_length2_init {
+ if (rdata_tail < rdata_stop) {
+ s->item_length2_location = rdata_tail;
+ rdata_tail += 2;
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _item_length2_exit {
+ s->item_length = rdata_tail - s->item_length2_location - 2;
+
+ if (s->item_length <= MAX_ITEM_LENGTH2) {
+ uint16_t val = htons((uint16_t)(s->item_length));
+ memcpy(s->item_length2_location, &val, 2);
+ } else {
+ WARN(ZS_ITEM_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ # END
+
+ # BEGIN - Owner processing
+ action _r_owner_init {
+ s->dname = s->r_owner;
+ s->r_owner_length = 0;
+ }
+ action _r_owner_exit {
+ s->r_owner_length = s->dname_tmp_length;
+ }
+ action _r_owner_empty_exit {
+ if (s->r_owner_length == 0) {
+ WARN(ZS_BAD_PREVIOUS_OWNER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _r_owner_error {
+ s->r_owner_length = 0;
+ WARN(ZS_BAD_OWNER);
+ fhold; fgoto err_line;
+ }
+
+ r_owner = ( dname >_r_owner_init %_r_owner_exit
+ | zlen %_r_owner_empty_exit # Empty owner - use the previous one.
+ ) $!_r_owner_error;
+ # END
+
+ # BEGIN - domain name in record data processing
+ action _r_dname_init {
+ s->dname = rdata_tail;
+ }
+ action _r_dname_exit {
+ rdata_tail += s->dname_tmp_length;
+ }
+
+ r_dname = dname >_r_dname_init %_r_dname_exit;
+ # END
+
+ # BEGIN - Number processing
+ action _number_digit {
+ // Overflow check: 10*(s->number64) + fc - '0' <= UINT64_MAX
+ if ((s->number64 < (UINT64_MAX / 10)) || // Dominant fast check.
+ ((s->number64 == (UINT64_MAX / 10)) && // Marginal case.
+ ((uint8_t)fc <= (UINT64_MAX % 10) + '0')
+ )
+ ) {
+ s->number64 *= 10;
+ s->number64 += digit_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_NUMBER64_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ number_digit = [0-9] $_number_digit;
+
+ action _number_init {
+ s->number64 = 0;
+ }
+ action _number_error {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+
+ # General integer number that cover all necessary integer ranges.
+ number = number_digit+ >_number_init;
+
+ action _float_init {
+ s->decimal_counter = 0;
+ }
+ action _decimal_init {
+ s->number64_tmp = s->number64;
+ }
+ action _decimal_digit {
+ s->decimal_counter++;
+ }
+
+ action _float_exit {
+ if (s->decimal_counter == 0 && s->number64 < UINT32_MAX) {
+ s->number64 *= pow(10, s->decimals);
+ } else if (s->decimal_counter <= s->decimals &&
+ s->number64_tmp < UINT32_MAX) {
+ s->number64 *= pow(10, s->decimals - s->decimal_counter);
+ s->number64 += s->number64_tmp * pow(10, s->decimals);
+ } else {
+ WARN(ZS_FLOAT_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ # Next float can't be used directly (doesn't contain decimals init)!
+ float = (number . ('.' . number? >_decimal_init $_decimal_digit)?)
+ >_float_init %_float_exit;
+
+ action _float2_init {
+ s->decimals = 2;
+ }
+ action _float3_init {
+ s->decimals = 3;
+ }
+
+ # Float number (in hundredths)with 2 possible decimal digits.
+ float2 = float >_float2_init;
+ # Float number (in thousandths) with 3 possible decimal digits.
+ float3 = float >_float3_init;
+
+ action _num8_write {
+ if (s->number64 <= UINT8_MAX) {
+ *rdata_tail = (uint8_t)(s->number64);
+ rdata_tail += 1;
+ } else {
+ WARN(ZS_NUMBER8_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _num16_write {
+ if (s->number64 <= UINT16_MAX) {
+ uint16_t num16 = htons((uint16_t)s->number64);
+ memcpy(rdata_tail, &num16, 2);
+ rdata_tail += 2;
+ } else {
+ WARN(ZS_NUMBER16_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _num32_write {
+ if (s->number64 <= UINT32_MAX) {
+ uint32_t num32 = htonl((uint32_t)s->number64);
+ memcpy(rdata_tail, &num32, 4);
+ rdata_tail += 4;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ action _type_number_exit {
+ if (s->number64 <= UINT16_MAX) {
+ s->r_type = (uint16_t)(s->number64);
+ } else {
+ WARN(ZS_NUMBER16_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ action _length_number_exit {
+ if (s->number64 <= UINT16_MAX) {
+ s->r_data_length = (uint16_t)(s->number64);
+ } else {
+ WARN(ZS_NUMBER16_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ num8 = number %_num8_write $!_number_error;
+ num16 = number %_num16_write $!_number_error;
+ num32 = number %_num32_write $!_number_error;
+
+ type_number = number %_type_number_exit $!_number_error;
+ length_number = number %_length_number_exit $!_number_error;
+ # END
+
+ # BEGIN - Time processing
+ action _time_unit_error {
+ WARN(ZS_BAD_TIME_UNIT);
+ fhold; fgoto err_line;
+ }
+
+ time_unit =
+ ( 's'i
+ | 'm'i ${ if (s->number64 <= (UINT32_MAX / 60)) {
+ s->number64 *= 60;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ | 'h'i ${ if (s->number64 <= (UINT32_MAX / 3600)) {
+ s->number64 *= 3600;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ | 'd'i ${ if (s->number64 <= (UINT32_MAX / 86400)) {
+ s->number64 *= 86400;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ | 'w'i ${ if (s->number64 <= (UINT32_MAX / 604800)) {
+ s->number64 *= 604800;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ ) $!_time_unit_error;
+
+
+ action _time_block_init {
+ s->number64_tmp = s->number64;
+ }
+ action _time_block_exit {
+ if (s->number64 + s->number64_tmp < UINT32_MAX) {
+ s->number64 += s->number64_tmp;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ time_block = (number . time_unit) >_time_block_init %_time_block_exit;
+
+ # Time is either a number or a sequence of time blocks (1w1h1m).
+ time = (number . (time_unit . (time_block)*)?) $!_number_error;
+
+ time32 = time %_num32_write;
+ # END
+
+ # BEGIN - Timestamp processing
+ action _timestamp_init {
+ s->buffer_length = 0;
+ }
+ action _timestamp {
+ if (s->buffer_length < sizeof(s->buffer) - 1) {
+ s->buffer[s->buffer_length++] = fc;
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _timestamp_exit {
+ s->buffer[s->buffer_length] = 0;
+
+ if (s->buffer_length == 14) { // Date; 14 = len("YYYYMMDDHHmmSS").
+ uint32_t timestamp;
+ int ret = date_to_timestamp(s->buffer, &timestamp);
+
+ if (ret == ZS_OK) {
+ *((uint32_t *)rdata_tail) = htonl(timestamp);
+ rdata_tail += 4;
+ } else {
+ WARN(ret);
+ fhold; fgoto err_line;
+ }
+ } else if (s->buffer_length <= 10) { // Timestamp format.
+ char *end;
+
+ s->number64 = strtoull((char *)(s->buffer), &end, 10);
+
+ if (end == (char *)(s->buffer) || *end != '\0') {
+ WARN(ZS_BAD_TIMESTAMP);
+ fhold; fgoto err_line;
+ }
+
+ if (s->number64 <= UINT32_MAX) {
+ *((uint32_t *)rdata_tail) = htonl((uint32_t)s->number64);
+ rdata_tail += 4;
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ } else {
+ WARN(ZS_BAD_TIMESTAMP_LENGTH);
+ fhold; fgoto err_line;
+ }
+ }
+ action _timestamp_error {
+ WARN(ZS_BAD_TIMESTAMP_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ timestamp = digit+ >_timestamp_init $_timestamp
+ %_timestamp_exit $!_timestamp_error;
+ # END
+
+ # BEGIN - Text processing
+ action _text_char {
+ if (rdata_tail <= rdata_stop) {
+ // Split long string.
+ if (s->long_string &&
+ rdata_tail - s->item_length_location == 1 + MAX_ITEM_LENGTH) {
+ // _item_length_exit equivalent.
+ *(s->item_length_location) = MAX_ITEM_LENGTH;
+ // _item_length_init equivalent.
+ s->item_length_location = rdata_tail++;
+
+ if (rdata_tail > rdata_stop) {
+ WARN(ZS_TEXT_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ *(rdata_tail++) = fc;
+ } else {
+ WARN(ZS_TEXT_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _text_char_error {
+ WARN(ZS_BAD_TEXT_CHAR);
+ fhold; fgoto err_line;
+ }
+ action _text_error {
+ WARN(ZS_BAD_TEXT);
+ fhold; fgoto err_line;
+ }
+
+ action _text_dec_init {
+ if (rdata_tail <= rdata_stop) {
+ // Split long string.
+ if (s->long_string &&
+ rdata_tail - s->item_length_location == 1 + MAX_ITEM_LENGTH) {
+ // _item_length_exit equivalent.
+ *(s->item_length_location) = MAX_ITEM_LENGTH;
+ // _item_length_init equivalent.
+ s->item_length_location = rdata_tail++;
+
+ if (rdata_tail > rdata_stop) {
+ WARN(ZS_TEXT_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ *rdata_tail = 0;
+ s->item_length++;
+ } else {
+ WARN(ZS_TEXT_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _text_dec {
+ if ((*rdata_tail < (UINT8_MAX / 10)) || // Dominant fast check.
+ ((*rdata_tail == (UINT8_MAX / 10)) && // Marginal case.
+ (fc <= (UINT8_MAX % 10) + '0')
+ )
+ ) {
+ *rdata_tail *= 10;
+ *rdata_tail += digit_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_NUMBER8_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _text_dec_exit {
+ rdata_tail++;
+ }
+ action _text_dec_error {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+
+ action _comma_list {
+ uint8_t *last_two = rdata_tail - 2;
+ uint16_t current_len = rdata_tail - s->item_length_location - 2;
+ if (s->comma_list) {
+ if (last_two[1] == ',') {
+ if (current_len <= 1) {
+ WARN(ZS_EMPTY_LIST_ITEM);
+ fhold; fgoto err_line;
+ } else if (last_two[0] != '\\') { // Start a new item.
+ *(s->item_length_location) = current_len;
+ s->item_length_location = rdata_tail - 1;
+ } else { // Remove backslash.
+ last_two[0] = ',';
+ rdata_tail--;
+ }
+ } else if (current_len > 1 && last_two[1] == '\\') {
+ if (last_two[0] == '\\') { // Remove backslash.
+ rdata_tail--;
+ }
+ }
+ }
+ }
+
+ text_char =
+ ( (33..126 - [\\;\"]) $_text_char # One printable char.
+ | ('\\' . (32..126 - digit)) @_text_char # One "\x" char.
+ | ('\\' %_text_dec_init # Initial "\" char.
+ . digit {3} $_text_dec %_text_dec_exit # "DDD" rest.
+ $!_text_dec_error
+ )
+ ) %_comma_list $!_text_char_error;
+
+ quoted_text_char =
+ ( text_char
+ | ([ \t;] | [\n] when { s->multiline }) $_text_char
+ ) $!_text_char_error;
+
+ # Text string machine instantiation (for smaller code).
+ text_ := (('\"' . quoted_text_char* . '\"') | text_char+)
+ $!_text_error %_ret . all_wchar;
+ text = ^all_wchar ${ fhold; fcall text_; };
+
+ # Text string with forward 1-byte length.
+ text_string = text >_item_length_init %_item_length_exit;
+
+ action _text_array_init {
+ s->long_string = true;
+ }
+ action _text_array_exit {
+ s->long_string = false;
+ }
+
+ # Text string array as one rdata item.
+ text_array =
+ ( (text_string . (sep . text_string)* . sep?)
+ ) >_text_array_init %_text_array_exit $!_text_array_exit;
+ # END
+
+ # BEGIN - TTL directive processing
+ action _default_ttl_exit {
+ if (s->number64 <= UINT32_MAX) {
+ s->default_ttl = (uint32_t)(s->number64);
+ } else {
+ ERR(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _default_ttl_error {
+ ERR(ZS_BAD_TTL);
+ fhold; fgoto err_line;
+ }
+
+ default_ttl_ := (sep . time . rest) $!_default_ttl_error
+ %_default_ttl_exit %_ret . newline;
+ default_ttl = all_wchar ${ fhold; fcall default_ttl_; };
+ # END
+
+ # BEGIN - ORIGIN directive processing
+ action _zone_origin_init {
+ s->dname = s->zone_origin;
+ }
+ action _zone_origin_exit {
+ s->zone_origin_length = s->dname_tmp_length;
+ }
+ action _zone_origin_error {
+ ERR(ZS_BAD_ORIGIN);
+ fhold; fgoto err_line;
+ }
+
+ zone_origin_ := (sep . absolute_dname >_zone_origin_init . rest)
+ $!_zone_origin_error %_zone_origin_exit %_ret . newline;
+ zone_origin = all_wchar ${ fhold; fcall zone_origin_; };
+ # END
+
+ # BEGIN - INCLUDE directive processing
+ action _incl_filename_init {
+ rdata_tail = s->r_data;
+ }
+ action _incl_filename_exit {
+ size_t len = rdata_tail - s->r_data;
+ if (len >= sizeof(s->include_filename)) {
+ ERR(ZS_BAD_INCLUDE_FILENAME);
+ fhold; fgoto err_line;
+ }
+
+ // Store zero terminated include filename.
+ memcpy(s->include_filename, s->r_data, len);
+ s->include_filename[len] = '\0';
+
+ // For detection whether origin is not present.
+ s->dname = NULL;
+ }
+ action _incl_filename_error {
+ ERR(ZS_BAD_INCLUDE_FILENAME);
+ fhold; fgoto err_line;
+ }
+
+ action _incl_origin_init {
+ s->dname = s->r_data;
+ }
+ action _incl_origin_exit {
+ s->r_data_length = s->dname_tmp_length;
+ }
+ action _incl_origin_error {
+ ERR(ZS_BAD_INCLUDE_ORIGIN);
+ fhold; fgoto err_line;
+ }
+
+ action _include_exit {
+ // Extend relative file path.
+ if (s->include_filename[0] != '/') {
+ int ret = snprintf((char *)(s->buffer), sizeof(s->buffer),
+ "%s/%s", s->path, s->include_filename);
+ if (ret <= 0 || ret >= sizeof(s->buffer)) {
+ ERR(ZS_BAD_INCLUDE_FILENAME);
+ fhold; fgoto err_line;
+ }
+ memcpy(s->include_filename, s->buffer, ret + 1);
+ }
+
+ // Origin conversion from wire to text form in \DDD notation.
+ if (s->dname == NULL) { // Use current origin.
+ wire_dname_to_str(s->zone_origin,
+ s->zone_origin_length,
+ (char *)s->buffer);
+ } else { // Use specified origin.
+ wire_dname_to_str(s->r_data,
+ s->r_data_length,
+ (char *)s->buffer);
+ }
+
+ // Let the caller to solve the include.
+ if (s->process.automatic) {
+ // Create new scanner for included zone file.
+ zs_scanner_t *ss = malloc(sizeof(zs_scanner_t));
+ if (ss == NULL) {
+ ERR(ZS_UNPROCESSED_INCLUDE);
+ fhold; fgoto err_line;
+ }
+
+ // Parse included zone file.
+ if (zs_init(ss, (char *)s->buffer, s->default_class,
+ s->default_ttl) != 0 ||
+ zs_set_input_file(ss, (char *)(s->include_filename)) != 0 ||
+ zs_set_processing(ss, s->process.record, s->process.error,
+ s->process.data) != 0 ||
+ zs_parse_all(ss) != 0) {
+ // File internal errors are handled by error callback.
+ if (ss->error.counter > 0) {
+ s->error.counter += ss->error.counter;
+ ERR(ZS_UNPROCESSED_INCLUDE);
+ // General include file error.
+ } else {
+ ERR(ss->error.code);
+ }
+ zs_deinit(ss);
+ free(ss);
+ fhold; fgoto err_line;
+ }
+ zs_deinit(ss);
+ free(ss);
+ } else {
+ s->state = ZS_STATE_INCLUDE;
+ fhold; fnext main; fbreak;
+ }
+ }
+
+ include_file_ :=
+ (sep . text >_incl_filename_init %_incl_filename_exit
+ $!_incl_filename_error .
+ (sep . absolute_dname >_incl_origin_init %_incl_origin_exit
+ $!_incl_origin_error
+ )? . rest
+ ) %_include_exit %_ret newline;
+ include_file = all_wchar ${ fhold; fcall include_file_; };
+ # END
+
+ # BEGIN - Directive switch
+ # Each error/warning in directive should stop processing.
+ # Some internal errors cause warning only. This causes stop processing.
+ action _directive_init {
+ ERR(ZS_OK);
+ }
+ # Remove stop processing flag.
+ action _directive_exit {
+ NOERR;
+ }
+ action _directive_error {
+ ERR(ZS_BAD_DIRECTIVE);
+ fhold; fgoto err_line;
+ }
+
+ directive = '$' . ( ("TTL"i . default_ttl)
+ | ("ORIGIN"i . zone_origin)
+ | ("INCLUDE"i . include_file)
+ ) >_directive_init %_directive_exit $!_directive_error;
+ # END
+
+ # BEGIN - RRecord class and ttl processing
+ action _default_r_class_exit {
+ s->r_class = s->default_class;
+ }
+
+ action _default_r_ttl_exit {
+ s->r_ttl = s->default_ttl;
+ }
+
+ action _r_class_in_exit {
+ s->r_class = KNOT_CLASS_IN;
+ }
+
+ action _r_ttl_exit {
+ if (s->number64 <= UINT32_MAX) {
+ s->r_ttl = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_NUMBER32_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ r_class = "IN"i %_r_class_in_exit;
+
+ r_ttl = time %_r_ttl_exit;
+ # END
+
+ # BEGIN - IPv4 and IPv6 address processing
+ action _addr_init {
+ s->buffer_length = 0;
+ }
+ action _addr {
+ if (s->buffer_length < sizeof(s->buffer) - 1) {
+ s->buffer[s->buffer_length++] = fc;
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _addr_error {
+ WARN(ZS_BAD_ADDRESS_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ action _ipv4_addr_exit {
+ s->buffer[s->buffer_length] = 0;
+
+ if (inet_pton(AF_INET, (char *)s->buffer, s->addr) <= 0) {
+ WARN(ZS_BAD_IPV4);
+ fhold; fgoto err_line;
+ }
+ }
+ action _ipv4_addr_write {
+ if (rdata_tail + ZS_INET4_ADDR_LENGTH > rdata_stop + 1) {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ memcpy(rdata_tail, s->addr, ZS_INET4_ADDR_LENGTH);
+ rdata_tail += ZS_INET4_ADDR_LENGTH;
+ }
+
+ action _ipv6_addr_exit {
+ s->buffer[s->buffer_length] = 0;
+
+ if (inet_pton(AF_INET6, (char *)s->buffer, s->addr) <= 0) {
+ WARN(ZS_BAD_IPV6);
+ fhold; fgoto err_line;
+ }
+ }
+ action _ipv6_addr_write {
+ if (rdata_tail + ZS_INET6_ADDR_LENGTH > rdata_stop + 1) {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ memcpy(rdata_tail, s->addr, ZS_INET6_ADDR_LENGTH);
+ rdata_tail += ZS_INET6_ADDR_LENGTH;
+ }
+
+ # Address parsers only.
+ ipv4_addr = (digit | '.')+ >_addr_init $_addr %_ipv4_addr_exit
+ $!_addr_error;
+ ipv6_addr = (xdigit | [.:])+ >_addr_init $_addr %_ipv6_addr_exit
+ $!_addr_error;
+
+ # Write parsed address to r_data.
+ ipv4_addr_write = ipv4_addr %_ipv4_addr_write;
+ ipv6_addr_write = ipv6_addr %_ipv6_addr_write;
+ # END
+
+ # BEGIN - apl record processing
+ action _apl_init {
+ memset(&(s->apl), 0, sizeof(s->apl));
+ }
+ action _apl_excl_flag {
+ s->apl.excl_flag = 128; // dec 128 = bin 10000000.
+ }
+ action _apl_addr_1 {
+ s->apl.addr_family = 1;
+ }
+ action _apl_addr_2 {
+ s->apl.addr_family = 2;
+ }
+ action _apl_prefix_length {
+ if ((s->apl.addr_family == 1 && s->number64 <= 32) ||
+ (s->apl.addr_family == 2 && s->number64 <= 128)) {
+ s->apl.prefix_length = (uint8_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_APL);
+ fhold; fgoto err_line;
+ }
+ }
+ action _apl_exit {
+ // Copy address to buffer.
+ uint8_t len;
+ switch (s->apl.addr_family) {
+ case 1:
+ len = ZS_INET4_ADDR_LENGTH;
+ memcpy(s->buffer, s->addr, len);
+ break;
+ case 2:
+ len = ZS_INET6_ADDR_LENGTH;
+ memcpy(s->buffer, s->addr, len);
+ break;
+ default:
+ WARN(ZS_BAD_APL);
+ fhold; fgoto err_line;
+ }
+ // Find prefix without trailing zeroes.
+ while (len > 0) {
+ if ((s->buffer[len - 1] & 255) != 0) {
+ break;
+ }
+ len--;
+ }
+ // Check for rdata overflow.
+ if (rdata_tail + 4 + len > rdata_stop + 1) {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ // Write address family.
+ uint16_t af = htons(s->apl.addr_family);
+ memcpy(rdata_tail, &af, sizeof(af));
+ rdata_tail += 2;
+ // Write prefix length in bits.
+ *(rdata_tail) = s->apl.prefix_length;
+ rdata_tail += 1;
+ // Write negation flag + prefix length in bytes.
+ *(rdata_tail) = len + s->apl.excl_flag;
+ rdata_tail += 1;
+ // Write address prefix non-null data.
+ memcpy(rdata_tail, s->buffer, len);
+ rdata_tail += len;
+ }
+ action _apl_error {
+ WARN(ZS_BAD_APL);
+ fhold; fgoto err_line;
+ }
+
+ apl = ('!'? $_apl_excl_flag .
+ ( ('1' $_apl_addr_1 . ':' . ipv4_addr . '/' . number
+ %_apl_prefix_length)
+ | ('2' $_apl_addr_2 . ':' . ipv6_addr . '/' . number
+ %_apl_prefix_length)
+ )
+ ) >_apl_init %_apl_exit $!_apl_error;
+
+ # Array of APL records (can be empty).
+ apl_array = apl? . (sep . apl)* . sep?;
+ # END
+
+ # BEGIN - Hexadecimal string array processing
+ action _first_hex_char {
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = first_hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _second_hex_char {
+ *rdata_tail += second_hex_to_num[(uint8_t)fc];
+ rdata_tail++;
+ }
+ action _hex_char_error {
+ WARN(ZS_BAD_HEX_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ hex_char = (xdigit $_first_hex_char . xdigit $_second_hex_char);
+
+ # Hex array with possibility of inside white spaces and multiline.
+ hex_array = (hex_char+ . sep?)+ $!_hex_char_error;
+
+ # Continuous hex array (or "-") with forward length processing.
+ salt = (hex_char+ | '-') >_item_length_init %_item_length_exit
+ $!_hex_char_error;
+
+ action _type_data_exit {
+ if ((rdata_tail - s->r_data) != s->r_data_length) {
+ WARN(ZS_BAD_RDATA_LENGTH);
+ fhold; fgoto err_line;
+ }
+ }
+
+ action _type_data_error {
+ WARN(ZS_BAD_HEX_RDATA);
+ fhold; fgoto err_line;
+ }
+
+ # Hex array with control to forward length statement.
+ type_data = hex_array %_type_data_exit $!_type_data_error;
+ # END
+
+ # BEGIN - Base64 processing (RFC 4648)
+ action _first_base64_char {
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = first_base64_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _second_base64_char {
+ *(rdata_tail++) += second_left_base64_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = second_right_base64_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _third_base64_char {
+ *(rdata_tail++) += third_left_base64_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = third_right_base64_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _fourth_base64_char {
+ *(rdata_tail++) += fourth_base64_to_num[(uint8_t)fc];
+ }
+
+ action _base64_char_error {
+ WARN(ZS_BAD_BASE64_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ base64_char = alnum | [+/];
+ base64_padd = '=';
+ base64_quartet =
+ ( base64_char $_first_base64_char . # A
+ base64_char $_second_base64_char . # AB
+ ( ( base64_char $_third_base64_char . # ABC
+ ( base64_char $_fourth_base64_char # ABCD
+ | base64_padd{1} # ABC=
+ )
+ )
+ | base64_padd{2} # AB==
+ )
+ );
+
+ # Base64 array with possibility of inside white spaces and multiline.
+ base64_ := (base64_quartet+ . sep?)+ $!_base64_char_error
+ %_ret . end_wchar;
+ base64 = base64_char ${ fhold; fcall base64_; };
+ # END
+
+ # BEGIN - Base32hex processing (RFC 4648)
+ action _first_base32hex_char {
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = first_base32hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _second_base32hex_char {
+ *(rdata_tail++) += second_left_base32hex_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = second_right_base32hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _third_base32hex_char {
+ *rdata_tail += third_base32hex_to_num[(uint8_t)fc];
+ }
+ action _fourth_base32hex_char {
+ *(rdata_tail++) += fourth_left_base32hex_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = fourth_right_base32hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _fifth_base32hex_char {
+ *(rdata_tail++) += fifth_left_base32hex_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = fifth_right_base32hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _sixth_base32hex_char {
+ *rdata_tail += sixth_base32hex_to_num[(uint8_t)fc];
+ }
+ action _seventh_base32hex_char {
+ *(rdata_tail++) += seventh_left_base32hex_to_num[(uint8_t)fc];
+
+ if (rdata_tail <= rdata_stop) {
+ *rdata_tail = seventh_right_base32hex_to_num[(uint8_t)fc];
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ action _eighth_base32hex_char {
+ *(rdata_tail++) += eighth_base32hex_to_num[(uint8_t)fc];
+ }
+
+ action _base32hex_char_error {
+ WARN(ZS_BAD_BASE32HEX_CHAR);
+ fhold; fgoto err_line;
+ }
+
+ base32hex_char = [0-9a-vA-V];
+ base32hex_padd = '=';
+ base32hex_octet =
+ ( base32hex_char $_first_base32hex_char . # A
+ base32hex_char $_second_base32hex_char . # AB
+ ( ( base32hex_char $_third_base32hex_char . # ABC
+ base32hex_char $_fourth_base32hex_char . # ABCD
+ ( ( base32hex_char $_fifth_base32hex_char . # ABCDE
+ ( ( base32hex_char $_sixth_base32hex_char . # ABCDEF
+ base32hex_char $_seventh_base32hex_char . # ABCDEFG
+ ( base32hex_char $_eighth_base32hex_char # ABCDEFGH
+ | base32hex_padd{1} # ABCDEFG=
+ )
+ )
+ | base32hex_padd{3} # ABCDE===
+ )
+ )
+ | base32hex_padd{4} # ABCD====
+ )
+ )
+ | base32hex_padd{6} # AB======
+ )
+ );
+
+ # Continuous base32hex (with padding!) array with forward length processing.
+ hash = base32hex_octet+ >_item_length_init %_item_length_exit
+ $!_base32hex_char_error;
+ # END
+
+ # BEGIN - Simple number write functions.
+ action _write8_0 {
+ *(rdata_tail++) = 0;
+ }
+ action _write8_1 {
+ *(rdata_tail++) = 1;
+ }
+ action _write8_2 {
+ *(rdata_tail++) = 2;
+ }
+ action _write8_3 {
+ *(rdata_tail++) = 3;
+ }
+ action _write8_5 {
+ *(rdata_tail++) = 5;
+ }
+ action _write8_6 {
+ *(rdata_tail++) = 6;
+ }
+ action _write8_7 {
+ *(rdata_tail++) = 7;
+ }
+ action _write8_8 {
+ *(rdata_tail++) = 8;
+ }
+ action _write8_10 {
+ *(rdata_tail++) = 10;
+ }
+ action _write8_12 {
+ *(rdata_tail++) = 12;
+ }
+ action _write8_13 {
+ *(rdata_tail++) = 13;
+ }
+ action _write8_14 {
+ *(rdata_tail++) = 14;
+ }
+ action _write8_15 {
+ *(rdata_tail++) = 15;
+ }
+ action _write8_16 {
+ *(rdata_tail++) = 16;
+ }
+ action _write8_252 {
+ *(rdata_tail++) = 252;
+ }
+ action _write8_253 {
+ *(rdata_tail++) = 253;
+ }
+ action _write8_254 {
+ *(rdata_tail++) = 254;
+ }
+
+ action _write16_0 {
+ uint16_t val = htons(0);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_1 {
+ uint16_t val = htons(1);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_2 {
+ uint16_t val = htons(2);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_3 {
+ uint16_t val = htons(3);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_4 {
+ uint16_t val = htons(4);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_5 {
+ uint16_t val = htons(5);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_6 {
+ uint16_t val = htons(6);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_7 {
+ uint16_t val = htons(7);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_8 {
+ uint16_t val = htons(8);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_253 {
+ uint16_t val = htons(253);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ action _write16_254 {
+ uint16_t val = htons(254);
+ memcpy(rdata_tail, &val, 2);
+ rdata_tail += 2;
+ }
+ # END
+
+ # BEGIN - Gateway
+ action _gateway_error {
+ WARN(ZS_BAD_GATEWAY);
+ fhold; fgoto err_line;
+ }
+ action _gateway_key_error {
+ WARN(ZS_BAD_GATEWAY_KEY);
+ fhold; fgoto err_line;
+ }
+
+ gateway = (( ('0' $_write8_0 . sep . num8 . sep . '.')
+ | ('1' $_write8_1 . sep . num8 . sep . ipv4_addr_write)
+ | ('2' $_write8_2 . sep . num8 . sep . ipv6_addr_write)
+ | ('3' $_write8_3 . sep . num8 . sep . r_dname)
+ ) $!_gateway_error .
+ # If algorithm is 0 then key isn't present and vice versa.
+ ( ((sep . base64) when { s->number64 != 0 })
+ | ((sep?) when { s->number64 == 0 }) # remove blank space
+ ) $!_gateway_key_error
+ );
+ # END
+
+ # BEGIN - Type processing
+ action _type_error {
+ WARN(ZS_UNSUPPORTED_TYPE);
+ fhold; fgoto err_line;
+ }
+
+ type_num =
+ ( "A"i %{ type_num(KNOT_RRTYPE_A, &rdata_tail); }
+ | "NS"i %{ type_num(KNOT_RRTYPE_NS, &rdata_tail); }
+ | "CNAME"i %{ type_num(KNOT_RRTYPE_CNAME, &rdata_tail); }
+ | "SOA"i %{ type_num(KNOT_RRTYPE_SOA, &rdata_tail); }
+ | "PTR"i %{ type_num(KNOT_RRTYPE_PTR, &rdata_tail); }
+ | "HINFO"i %{ type_num(KNOT_RRTYPE_HINFO, &rdata_tail); }
+ | "MINFO"i %{ type_num(KNOT_RRTYPE_MINFO, &rdata_tail); }
+ | "MX"i %{ type_num(KNOT_RRTYPE_MX, &rdata_tail); }
+ | "TXT"i %{ type_num(KNOT_RRTYPE_TXT, &rdata_tail); }
+ | "RP"i %{ type_num(KNOT_RRTYPE_RP, &rdata_tail); }
+ | "AFSDB"i %{ type_num(KNOT_RRTYPE_AFSDB, &rdata_tail); }
+ | "RT"i %{ type_num(KNOT_RRTYPE_RT, &rdata_tail); }
+ | "KEY"i %{ type_num(KNOT_RRTYPE_KEY, &rdata_tail); }
+ | "AAAA"i %{ type_num(KNOT_RRTYPE_AAAA, &rdata_tail); }
+ | "LOC"i %{ type_num(KNOT_RRTYPE_LOC, &rdata_tail); }
+ | "SRV"i %{ type_num(KNOT_RRTYPE_SRV, &rdata_tail); }
+ | "NAPTR"i %{ type_num(KNOT_RRTYPE_NAPTR, &rdata_tail); }
+ | "KX"i %{ type_num(KNOT_RRTYPE_KX, &rdata_tail); }
+ | "CERT"i %{ type_num(KNOT_RRTYPE_CERT, &rdata_tail); }
+ | "DNAME"i %{ type_num(KNOT_RRTYPE_DNAME, &rdata_tail); }
+ | "APL"i %{ type_num(KNOT_RRTYPE_APL, &rdata_tail); }
+ | "DS"i %{ type_num(KNOT_RRTYPE_DS, &rdata_tail); }
+ | "SSHFP"i %{ type_num(KNOT_RRTYPE_SSHFP, &rdata_tail); }
+ | "IPSECKEY"i %{ type_num(KNOT_RRTYPE_IPSECKEY, &rdata_tail); }
+ | "RRSIG"i %{ type_num(KNOT_RRTYPE_RRSIG, &rdata_tail); }
+ | "NSEC"i %{ type_num(KNOT_RRTYPE_NSEC, &rdata_tail); }
+ | "DNSKEY"i %{ type_num(KNOT_RRTYPE_DNSKEY, &rdata_tail); }
+ | "DHCID"i %{ type_num(KNOT_RRTYPE_DHCID, &rdata_tail); }
+ | "NSEC3"i %{ type_num(KNOT_RRTYPE_NSEC3, &rdata_tail); }
+ | "NSEC3PARAM"i %{ type_num(KNOT_RRTYPE_NSEC3PARAM, &rdata_tail); }
+ | "TLSA"i %{ type_num(KNOT_RRTYPE_TLSA, &rdata_tail); }
+ | "SMIMEA"i %{ type_num(KNOT_RRTYPE_SMIMEA, &rdata_tail); }
+ | "CDS"i %{ type_num(KNOT_RRTYPE_CDS, &rdata_tail); }
+ | "CDNSKEY"i %{ type_num(KNOT_RRTYPE_CDNSKEY, &rdata_tail); }
+ | "OPENPGPKEY"i %{ type_num(KNOT_RRTYPE_OPENPGPKEY, &rdata_tail); }
+ | "CSYNC"i %{ type_num(KNOT_RRTYPE_CSYNC, &rdata_tail); }
+ | "ZONEMD"i %{ type_num(KNOT_RRTYPE_ZONEMD, &rdata_tail); }
+ | "SPF"i %{ type_num(KNOT_RRTYPE_SPF, &rdata_tail); }
+ | "NID"i %{ type_num(KNOT_RRTYPE_NID, &rdata_tail); }
+ | "L32"i %{ type_num(KNOT_RRTYPE_L32, &rdata_tail); }
+ | "L64"i %{ type_num(KNOT_RRTYPE_L64, &rdata_tail); }
+ | "LP"i %{ type_num(KNOT_RRTYPE_LP, &rdata_tail); }
+ | "EUI48"i %{ type_num(KNOT_RRTYPE_EUI48, &rdata_tail); }
+ | "EUI64"i %{ type_num(KNOT_RRTYPE_EUI64, &rdata_tail); }
+ | "URI"i %{ type_num(KNOT_RRTYPE_URI, &rdata_tail); }
+ | "CAA"i %{ type_num(KNOT_RRTYPE_CAA, &rdata_tail); }
+ | "SVCB"i %{ type_num(KNOT_RRTYPE_SVCB, &rdata_tail); }
+ | "HTTPS"i %{ type_num(KNOT_RRTYPE_HTTPS, &rdata_tail); }
+ | "TYPE"i . num16 # TYPE0-TYPE65535.
+ ) $!_type_error;
+ # END
+
+ # BEGIN - Bitmap processing
+ action _type_bitmap_exit {
+ if (s->number64 <= UINT16_MAX) {
+ window_add_bit(s->number64, s);
+ } else {
+ WARN(ZS_NUMBER16_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ # TYPE0-TYPE65535.
+ type_bitmap = number %_type_bitmap_exit;
+
+ type_bit =
+ ( "A"i %{ window_add_bit(KNOT_RRTYPE_A, s); }
+ | "NS"i %{ window_add_bit(KNOT_RRTYPE_NS, s); }
+ | "CNAME"i %{ window_add_bit(KNOT_RRTYPE_CNAME, s); }
+ | "SOA"i %{ window_add_bit(KNOT_RRTYPE_SOA, s); }
+ | "PTR"i %{ window_add_bit(KNOT_RRTYPE_PTR, s); }
+ | "HINFO"i %{ window_add_bit(KNOT_RRTYPE_HINFO, s); }
+ | "MINFO"i %{ window_add_bit(KNOT_RRTYPE_MINFO, s); }
+ | "MX"i %{ window_add_bit(KNOT_RRTYPE_MX, s); }
+ | "TXT"i %{ window_add_bit(KNOT_RRTYPE_TXT, s); }
+ | "RP"i %{ window_add_bit(KNOT_RRTYPE_RP, s); }
+ | "AFSDB"i %{ window_add_bit(KNOT_RRTYPE_AFSDB, s); }
+ | "RT"i %{ window_add_bit(KNOT_RRTYPE_RT, s); }
+ | "KEY"i %{ window_add_bit(KNOT_RRTYPE_KEY, s); }
+ | "AAAA"i %{ window_add_bit(KNOT_RRTYPE_AAAA, s); }
+ | "LOC"i %{ window_add_bit(KNOT_RRTYPE_LOC, s); }
+ | "SRV"i %{ window_add_bit(KNOT_RRTYPE_SRV, s); }
+ | "NAPTR"i %{ window_add_bit(KNOT_RRTYPE_NAPTR, s); }
+ | "KX"i %{ window_add_bit(KNOT_RRTYPE_KX, s); }
+ | "CERT"i %{ window_add_bit(KNOT_RRTYPE_CERT, s); }
+ | "DNAME"i %{ window_add_bit(KNOT_RRTYPE_DNAME, s); }
+ | "APL"i %{ window_add_bit(KNOT_RRTYPE_APL, s); }
+ | "DS"i %{ window_add_bit(KNOT_RRTYPE_DS, s); }
+ | "SSHFP"i %{ window_add_bit(KNOT_RRTYPE_SSHFP, s); }
+ | "IPSECKEY"i %{ window_add_bit(KNOT_RRTYPE_IPSECKEY, s); }
+ | "RRSIG"i %{ window_add_bit(KNOT_RRTYPE_RRSIG, s); }
+ | "NSEC"i %{ window_add_bit(KNOT_RRTYPE_NSEC, s); }
+ | "DNSKEY"i %{ window_add_bit(KNOT_RRTYPE_DNSKEY, s); }
+ | "DHCID"i %{ window_add_bit(KNOT_RRTYPE_DHCID, s); }
+ | "NSEC3"i %{ window_add_bit(KNOT_RRTYPE_NSEC3, s); }
+ | "NSEC3PARAM"i %{ window_add_bit(KNOT_RRTYPE_NSEC3PARAM, s); }
+ | "TLSA"i %{ window_add_bit(KNOT_RRTYPE_TLSA, s); }
+ | "SMIMEA"i %{ window_add_bit(KNOT_RRTYPE_SMIMEA, s); }
+ | "CDS"i %{ window_add_bit(KNOT_RRTYPE_CDS, s); }
+ | "CDNSKEY"i %{ window_add_bit(KNOT_RRTYPE_CDNSKEY, s); }
+ | "OPENPGPKEY"i %{ window_add_bit(KNOT_RRTYPE_OPENPGPKEY, s); }
+ | "CSYNC"i %{ window_add_bit(KNOT_RRTYPE_CSYNC, s); }
+ | "ZONEMD"i %{ window_add_bit(KNOT_RRTYPE_ZONEMD, s); }
+ | "SPF"i %{ window_add_bit(KNOT_RRTYPE_SPF, s); }
+ | "NID"i %{ window_add_bit(KNOT_RRTYPE_NID, s); }
+ | "L32"i %{ window_add_bit(KNOT_RRTYPE_L32, s); }
+ | "L64"i %{ window_add_bit(KNOT_RRTYPE_L64, s); }
+ | "LP"i %{ window_add_bit(KNOT_RRTYPE_LP, s); }
+ | "EUI48"i %{ window_add_bit(KNOT_RRTYPE_EUI48, s); }
+ | "EUI64"i %{ window_add_bit(KNOT_RRTYPE_EUI64, s); }
+ | "URI"i %{ window_add_bit(KNOT_RRTYPE_URI, s); }
+ | "CAA"i %{ window_add_bit(KNOT_RRTYPE_CAA, s); }
+ | "SVCB"i %{ window_add_bit(KNOT_RRTYPE_SVCB, s); }
+ | "HTTPS"i %{ window_add_bit(KNOT_RRTYPE_HTTPS, s); }
+ | "TYPE"i . type_bitmap # TYPE0-TYPE65535.
+ );
+
+ action _bitmap_init {
+ memset(s->windows, 0, sizeof(s->windows));
+ s->last_window = -1;
+ }
+ action _bitmap_exit {
+ for (uint16_t window = 0; window <= s->last_window; window++) {
+ if ((s->windows[window]).length > 0) {
+ if (rdata_tail + 2 + (s->windows[window]).length <= rdata_stop)
+ {
+ // Window number.
+ *rdata_tail = (uint8_t)window;
+ rdata_tail += 1;
+ // Bitmap length.
+ *rdata_tail = (s->windows[window]).length;
+ rdata_tail += 1;
+ // Copying bitmap.
+ memcpy(rdata_tail,
+ (s->windows[window]).bitmap,
+ (s->windows[window]).length);
+ rdata_tail += (s->windows[window]).length;
+ } else {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+ }
+ }
+ action _bitmap_error {
+ WARN(ZS_BAD_BITMAP);
+ fhold; fgoto err_line;
+ }
+
+ # Blank bitmap is allowed too.
+ bitmap_ := ((sep . type_bit)* . sep?) >_bitmap_init
+ %_bitmap_exit %_ret $!_bitmap_error . end_wchar;
+ bitmap = all_wchar ${ fhold; fcall bitmap_; };
+ # END
+
+ # BEGIN - Location processing
+ action _d1_exit {
+ if (s->number64 <= 90) {
+ s->loc.d1 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _d2_exit {
+ if (s->number64 <= 180) {
+ s->loc.d2 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _m1_exit {
+ if (s->number64 <= 59) {
+ s->loc.m1 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _m2_exit {
+ if (s->number64 <= 59) {
+ s->loc.m2 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _s1_exit {
+ if (s->number64 <= 59999) {
+ s->loc.s1 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _s2_exit {
+ if (s->number64 <= 59999) {
+ s->loc.s2 = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _alt_exit {
+ if ((s->loc.alt_sign == 1 && s->number64 <= 4284967295) ||
+ (s->loc.alt_sign == -1 && s->number64 <= 10000000))
+ {
+ s->loc.alt = (uint32_t)(s->number64);
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _siz_exit {
+ if (s->number64 <= 9000000000ULL) {
+ s->loc.siz = s->number64;
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _hp_exit {
+ if (s->number64 <= 9000000000ULL) {
+ s->loc.hp = s->number64;
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _vp_exit {
+ if (s->number64 <= 9000000000ULL) {
+ s->loc.vp = s->number64;
+ } else {
+ WARN(ZS_BAD_NUMBER);
+ fhold; fgoto err_line;
+ }
+ }
+ action _lat_sign {
+ s->loc.lat_sign = -1;
+ }
+ action _long_sign {
+ s->loc.long_sign = -1;
+ }
+ action _alt_sign {
+ s->loc.alt_sign = -1;
+ }
+
+ d1 = number %_d1_exit;
+ d2 = number %_d2_exit;
+ m1 = number %_m1_exit;
+ m2 = number %_m2_exit;
+ s1 = float3 %_s1_exit;
+ s2 = float3 %_s2_exit;
+ siz = float2 %_siz_exit;
+ hp = float2 %_hp_exit;
+ vp = float2 %_vp_exit;
+ alt = ('-' %_alt_sign)? . float2 %_alt_exit;
+ lat_sign = 'N' | 'S' %_lat_sign;
+ long_sign = 'E' | 'W' %_long_sign;
+
+ action _loc_init {
+ memset(&(s->loc), 0, sizeof(s->loc));
+ // Defaults.
+ s->loc.siz = 100;
+ s->loc.vp = 1000;
+ s->loc.hp = 1000000;
+ s->loc.lat_sign = 1;
+ s->loc.long_sign = 1;
+ s->loc.alt_sign = 1;
+ }
+ action _loc_exit {
+ // Write version.
+ *(rdata_tail) = 0;
+ rdata_tail += 1;
+ // Write size.
+ *(rdata_tail) = loc64to8(s->loc.siz);
+ rdata_tail += 1;
+ // Write horizontal precision.
+ *(rdata_tail) = loc64to8(s->loc.hp);
+ rdata_tail += 1;
+ // Write vertical precision.
+ *(rdata_tail) = loc64to8(s->loc.vp);
+ rdata_tail += 1;
+ // Write latitude.
+ *((uint32_t *)rdata_tail) = htonl(LOC_LAT_ZERO + s->loc.lat_sign *
+ (3600000 * s->loc.d1 + 60000 * s->loc.m1 + s->loc.s1));
+ rdata_tail += 4;
+ // Write longitude.
+ *((uint32_t *)rdata_tail) = htonl(LOC_LONG_ZERO + s->loc.long_sign *
+ (3600000 * s->loc.d2 + 60000 * s->loc.m2 + s->loc.s2));
+ rdata_tail += 4;
+ // Write altitude.
+ *((uint32_t *)rdata_tail) = htonl(LOC_ALT_ZERO + s->loc.alt_sign *
+ (s->loc.alt));
+ rdata_tail += 4;
+ }
+ action _loc_error {
+ WARN(ZS_BAD_LOC_DATA);
+ fhold; fgoto err_line;
+ }
+
+ loc = (d1 . sep . (m1 . sep . (s1 . sep)?)? . lat_sign . sep .
+ d2 . sep . (m2 . sep . (s2 . sep)?)? . long_sign . sep .
+ alt 'm'? . (sep . siz 'm'? . (sep . hp 'm'? . (sep . vp 'm'?)?)?)? .
+ sep?
+ ) >_loc_init %_loc_exit $!_loc_error;
+ # END
+
+ # BEGIN - Hexadecimal rdata processing
+ action _hex_r_data_error {
+ WARN(ZS_BAD_HEX_RDATA);
+ fhold; fgoto err_line;
+ }
+
+ nonempty_hex_r_data :=
+ (sep . length_number . sep . type_data)
+ $!_hex_r_data_error %_ret . end_wchar;
+
+ hex_r_data :=
+ (sep .
+ ( ('0' %_ret . all_wchar)
+ | (length_number . sep . type_data %_ret . end_wchar)
+ )
+ ) $!_hex_r_data_error;
+ # END
+
+ # BEGIN - EUI processing
+ action _eui_init {
+ s->item_length = 0;
+ }
+ action _eui_count {
+ s->item_length++;
+ }
+ action _eui48_exit {
+ if (s->item_length != 6) {
+ WARN(ZS_BAD_EUI_LENGTH);
+ fhold; fgoto err_line;
+ }
+ }
+ action _eui64_exit {
+ if (s->item_length != 8) {
+ WARN(ZS_BAD_EUI_LENGTH);
+ fhold; fgoto err_line;
+ }
+ }
+ action _eui_sep_error {
+ WARN(ZS_BAD_CHAR_DASH);
+ fhold; fgoto err_line;
+ }
+
+ eui48 = (hex_char %_eui_count .
+ ('-' >!_eui_sep_error . hex_char %_eui_count)+
+ ) $!_hex_char_error >_eui_init %_eui48_exit;
+
+ eui64 = (hex_char %_eui_count .
+ ('-' >!_eui_sep_error . hex_char %_eui_count)+
+ ) $!_hex_char_error >_eui_init %_eui64_exit;
+ # END
+
+ # BEGIN - ILNP processing
+ action _l64_init {
+ s->item_length = 0;
+ }
+ action _l64_count {
+ s->item_length++;
+ }
+ action _l64_exit {
+ if (s->item_length != 4) {
+ WARN(ZS_BAD_L64_LENGTH);
+ fhold; fgoto err_line;
+ }
+ }
+ action _l64_sep_error {
+ WARN(ZS_BAD_CHAR_COLON);
+ fhold; fgoto err_line;
+ }
+
+ l64_label = (hex_char . hex_char) $!_hex_char_error %_l64_count;
+ l64 = (l64_label . (':' >!_l64_sep_error . l64_label)+
+ ) $!_hex_char_error >_l64_init %_l64_exit;
+
+ l32 = ipv4_addr %_ipv4_addr_write;
+ # END
+
+ # BEGIN - SvcParams processing (SVCB/HTTPS records)
+ action _svcb_params_init {
+ s->svcb.params_position = rdata_tail;
+ s->svcb.last_key = -1;
+ }
+ action _svcb_params_exit {
+ int ret = svcb_check(s, rdata_tail);
+ if (ret != ZS_OK) {
+ WARN(ret);
+ fhold; fgoto err_line;
+ }
+ }
+ action _svcb_params_error {
+ WARN(ZS_BAD_SVCB_PARAM);
+ fhold; fgoto err_line;
+ }
+
+ action _mandat_value_error {
+ WARN(ZS_BAD_SVCB_MANDATORY);
+ fhold; fgoto err_line;
+ }
+
+ action _svcb_param_init {
+ if (rdata_tail + 4 > rdata_stop + 1) { // key_len + val_len
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ s->svcb.param_position = rdata_tail;
+ }
+ action _svcb_param_exit {
+ int ret = svcb_sort(s, rdata_tail);
+ if (ret != ZS_OK) {
+ WARN(ret);
+ fhold; fgoto err_line;
+ }
+ }
+
+ action _alpnl_init {
+ s->comma_list = true;
+ }
+ action _alpnl_exit {
+ s->comma_list = false;
+ }
+
+ action _mandatory_init {
+ s->svcb.mandatory_position = rdata_tail + 2; // Skip 2-B prefix.
+ }
+ action _mandatory_exit {
+ svcb_mandatory_sort(s->svcb.mandatory_position, rdata_tail);
+ }
+
+ action _rdata_2B_check {
+ if (rdata_tail + 2 > rdata_stop + 1) {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ }
+
+ svcb_key_generic = ("key" . num16);
+ svcb_key_mandatory = ("mandatory" %_write16_0);
+ svcb_key_alpn = ("alpn" %_write16_1);
+ svcb_key_ndalpn = ("no-default-alpn" %_write16_2);
+ svcb_key_port = ("port" %_write16_3);
+ svcb_key_ipv4hint = ("ipv4hint" %_write16_4);
+ svcb_key_ech = ("ech" %_write16_5);
+ svcb_key_ipv6hint = ("ipv6hint" %_write16_6);
+
+ mandat_value_ :=
+ (svcb_key_generic | svcb_key_alpn | svcb_key_ndalpn | svcb_key_port |
+ svcb_key_ipv4hint | svcb_key_ech | svcb_key_ipv6hint
+ ) >_rdata_2B_check $!_mandat_value_error %_ret . ([,\"] | all_wchar);
+ mandat_value = alpha ${ fhold; fcall mandat_value_; };
+
+ svcb_empty = zlen %_write16_0;
+ svcb_generic_ = (text >_item_length2_init %_item_length2_exit);
+ svcb_generic = ("=" . svcb_generic_) | svcb_empty;
+ svcb_mandat_ = ((mandat_value . ("," . mandat_value)*) >_item_length2_init %_item_length2_exit);
+ svcb_mandat = svcb_mandat_ >_mandatory_init %_mandatory_exit;
+ svcb_alpn = (text_string >_alpnl_init %_alpnl_exit >_item_length2_init %_item_length2_exit);
+ svcb_port = num16 >_write16_2 >_rdata_2B_check;
+ svcb_ipv4 = ((ipv4_addr_write . ("," . ipv4_addr_write)*) >_item_length2_init %_item_length2_exit);
+ svcb_ech = (base64_quartet+ >_item_length2_init %_item_length2_exit);
+ svcb_ipv6 = ((ipv6_addr_write . ("," . ipv6_addr_write)*) >_item_length2_init %_item_length2_exit);
+
+ svcb_param_generic = (svcb_key_generic . svcb_generic);
+ svcb_param_mandatory = (svcb_key_mandatory . "=" . (svcb_mandat | ('\"' . svcb_mandat . '\"')));
+ svcb_param_alpn = (svcb_key_alpn . "=" . (svcb_alpn | ('\"' . svcb_alpn . '\"')));
+ svcb_param_ndalpn = (svcb_key_ndalpn . svcb_empty);
+ svcb_param_port = (svcb_key_port . "=" . (svcb_port | ('\"' . svcb_port . '\"')));
+ svcb_param_ipv4hint = (svcb_key_ipv4hint . "=" . (svcb_ipv4 | ('\"' . svcb_ipv4 . '\"')));
+ svcb_param_ech = (svcb_key_ech . "=" . (svcb_ech | ('\"' . svcb_ech . '\"')));
+ svcb_param_ipv6hint = (svcb_key_ipv6hint . "=" . (svcb_ipv6 | ('\"' . svcb_ipv6 . '\"')));
+
+ svcb_param_any =
+ (svcb_param_generic | svcb_param_mandatory | svcb_param_alpn |
+ svcb_param_ndalpn | svcb_param_port | svcb_param_ipv4hint |
+ svcb_param_ech | svcb_param_ipv6hint
+ ) >_svcb_param_init %_svcb_param_exit;
+ svcb_params_ :=
+ ((sep . svcb_param_any)* . sep?) >_svcb_params_init
+ %_svcb_params_exit $!_svcb_params_error %_ret . end_wchar;
+ svcb_params = all_wchar ${ fhold; fcall svcb_params_; };
+ # END
+
+ # BEGIN - Mnemonic names processing
+ action _dns_alg_error {
+ WARN(ZS_BAD_ALGORITHM);
+ fhold; fgoto err_line;
+ }
+ action _cert_type_error {
+ WARN(ZS_BAD_CERT_TYPE);
+ fhold; fgoto err_line;
+ }
+
+ dns_alg_ :=
+ ( number %_num8_write
+ | "RSAMD5"i %_write8_1
+ | "DH"i %_write8_2
+ | "DSA"i %_write8_3
+ | "RSASHA1"i %_write8_5
+ | "DSA-NSEC3-SHA1"i %_write8_6
+ | "RSASHA1-NSEC3-SHA1"i %_write8_7
+ | "RSASHA256"i %_write8_8
+ | "RSASHA512"i %_write8_10
+ | "ECC-GOST"i %_write8_12
+ | "ECDSAP256SHA256"i %_write8_13
+ | "ECDSAP384SHA384"i %_write8_14
+ | "ED25519"i %_write8_15
+ | "ED448"i %_write8_16
+ | "INDIRECT"i %_write8_252
+ | "PRIVATEDNS"i %_write8_253
+ | "PRIVATEOID"i %_write8_254
+ ) $!_dns_alg_error %_ret . all_wchar;
+ dns_alg = alnum ${ fhold; fcall dns_alg_; };
+
+ cert_type_ :=
+ ( number %_num16_write
+ | "PKIX"i %_write16_1
+ | "SPKI"i %_write16_2
+ | "PGP"i %_write16_3
+ | "IPKIX"i %_write16_4
+ | "ISPKI"i %_write16_5
+ | "IPGP"i %_write16_6
+ | "ACPKIX"i %_write16_7
+ | "IACPKIX"i %_write16_8
+ | "URI"i %_write16_253
+ | "OID"i %_write16_254
+ ) $!_cert_type_error %_ret . all_wchar;
+ cert_type = alnum ${ fhold; fcall cert_type_; };
+ # END
+
+ # BEGIN - Rdata processing
+ action _r_data_init {
+ rdata_tail = s->r_data;
+ }
+ action _r_data_error {
+ WARN(ZS_BAD_RDATA);
+ fhold; fgoto err_line;
+ }
+
+ r_data_a :=
+ (ipv4_addr_write)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_ns :=
+ (r_dname)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_soa :=
+ (r_dname . sep . r_dname . sep . num32 . sep . time32 .
+ sep . time32 . sep . time32 . sep . time32)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_hinfo :=
+ (text_string . sep . text_string)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_minfo :=
+ (r_dname . sep . r_dname)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_mx :=
+ (num16 . sep . r_dname)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_txt :=
+ (text_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_aaaa :=
+ (ipv6_addr_write)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_loc :=
+ (loc)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_srv :=
+ (num16 . sep . num16 . sep . num16 . sep . r_dname)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_naptr :=
+ (num16 . sep . num16 . sep . text_string . sep . text_string .
+ sep . text_string . sep . r_dname)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_cert :=
+ (cert_type . sep . num16 . sep . dns_alg . sep . base64)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_apl :=
+ (apl_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_ds :=
+ (num16 . sep . dns_alg . sep . num8 . sep . hex_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_sshfp :=
+ (num8 . sep . num8 . sep . hex_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_ipseckey :=
+ (num8 . sep . gateway)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_rrsig :=
+ (type_num . sep . dns_alg . sep . num8 . sep . num32 . sep .
+ timestamp . sep . timestamp . sep . num16 . sep . r_dname .
+ sep . base64)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_nsec :=
+ (r_dname . bitmap)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_dnskey :=
+ (num16 . sep . num8 . sep . dns_alg . sep . base64)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_dhcid :=
+ (base64)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_nsec3 :=
+ (num8 . sep . num8 . sep . num16 . sep . salt . sep .
+ hash . bitmap)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_nsec3param :=
+ (num8 . sep . num8 . sep . num16 . sep . salt)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_tlsa :=
+ (num8 . sep . num8 . sep . num8 . sep . hex_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_csync :=
+ (num32 . sep . num16 . bitmap)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_zonemd :=
+ (num32 . sep . num8 . sep . num8 . sep . hex_array)
+ $!_r_data_error %_ret . end_wchar;
+
+ r_data_l32 :=
+ (num16 . sep . l32)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_l64 :=
+ (num16 . sep . l64)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_eui48 :=
+ (eui48)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_eui64 :=
+ (eui64)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_uri :=
+ (num16 . sep . num16 . sep . text)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_caa :=
+ (num8 . sep . text_string . sep . text)
+ $!_r_data_error %_ret . all_wchar;
+
+ r_data_svcb :=
+ (num16 . sep . r_dname . svcb_params)
+ $!_r_data_error %_ret . all_wchar;
+
+ action _text_r_data {
+ fhold;
+ switch (s->r_type) {
+ case KNOT_RRTYPE_A:
+ fcall r_data_a;
+ case KNOT_RRTYPE_NS:
+ case KNOT_RRTYPE_CNAME:
+ case KNOT_RRTYPE_PTR:
+ case KNOT_RRTYPE_DNAME:
+ fcall r_data_ns;
+ case KNOT_RRTYPE_SOA:
+ fcall r_data_soa;
+ case KNOT_RRTYPE_HINFO:
+ fcall r_data_hinfo;
+ case KNOT_RRTYPE_MINFO:
+ case KNOT_RRTYPE_RP:
+ fcall r_data_minfo;
+ case KNOT_RRTYPE_MX:
+ case KNOT_RRTYPE_AFSDB:
+ case KNOT_RRTYPE_RT:
+ case KNOT_RRTYPE_KX:
+ case KNOT_RRTYPE_LP:
+ fcall r_data_mx;
+ case KNOT_RRTYPE_TXT:
+ case KNOT_RRTYPE_SPF:
+ fcall r_data_txt;
+ case KNOT_RRTYPE_AAAA:
+ fcall r_data_aaaa;
+ case KNOT_RRTYPE_LOC:
+ fcall r_data_loc;
+ case KNOT_RRTYPE_SRV:
+ fcall r_data_srv;
+ case KNOT_RRTYPE_NAPTR:
+ fcall r_data_naptr;
+ case KNOT_RRTYPE_CERT:
+ fcall r_data_cert;
+ case KNOT_RRTYPE_APL:
+ fcall r_data_apl;
+ case KNOT_RRTYPE_DS:
+ case KNOT_RRTYPE_CDS:
+ fcall r_data_ds;
+ case KNOT_RRTYPE_SSHFP:
+ fcall r_data_sshfp;
+ case KNOT_RRTYPE_IPSECKEY:
+ fcall r_data_ipseckey;
+ case KNOT_RRTYPE_RRSIG:
+ fcall r_data_rrsig;
+ case KNOT_RRTYPE_NSEC:
+ fcall r_data_nsec;
+ case KNOT_RRTYPE_KEY:
+ case KNOT_RRTYPE_DNSKEY:
+ case KNOT_RRTYPE_CDNSKEY:
+ fcall r_data_dnskey;
+ case KNOT_RRTYPE_DHCID:
+ case KNOT_RRTYPE_OPENPGPKEY:
+ fcall r_data_dhcid;
+ case KNOT_RRTYPE_NSEC3:
+ fcall r_data_nsec3;
+ case KNOT_RRTYPE_NSEC3PARAM:
+ fcall r_data_nsec3param;
+ case KNOT_RRTYPE_TLSA:
+ case KNOT_RRTYPE_SMIMEA:
+ fcall r_data_tlsa;
+ case KNOT_RRTYPE_CSYNC:
+ fcall r_data_csync;
+ case KNOT_RRTYPE_ZONEMD:
+ fcall r_data_zonemd;
+ case KNOT_RRTYPE_NID:
+ case KNOT_RRTYPE_L64:
+ fcall r_data_l64;
+ case KNOT_RRTYPE_L32:
+ fcall r_data_l32;
+ case KNOT_RRTYPE_EUI48:
+ fcall r_data_eui48;
+ case KNOT_RRTYPE_EUI64:
+ fcall r_data_eui64;
+ case KNOT_RRTYPE_URI:
+ fcall r_data_uri;
+ case KNOT_RRTYPE_CAA:
+ fcall r_data_caa;
+ case KNOT_RRTYPE_SVCB:
+ case KNOT_RRTYPE_HTTPS:
+ fcall r_data_svcb;
+ default:
+ WARN(ZS_CANNOT_TEXT_DATA);
+ fgoto err_line;
+ }
+ }
+ action _hex_r_data {
+ switch (s->r_type) {
+ // Next types must not have empty rdata.
+ case KNOT_RRTYPE_A:
+ case KNOT_RRTYPE_NS:
+ case KNOT_RRTYPE_CNAME:
+ case KNOT_RRTYPE_PTR:
+ case KNOT_RRTYPE_DNAME:
+ case KNOT_RRTYPE_SOA:
+ case KNOT_RRTYPE_HINFO:
+ case KNOT_RRTYPE_MINFO:
+ case KNOT_RRTYPE_MX:
+ case KNOT_RRTYPE_AFSDB:
+ case KNOT_RRTYPE_RT:
+ case KNOT_RRTYPE_KX:
+ case KNOT_RRTYPE_TXT:
+ case KNOT_RRTYPE_SPF:
+ case KNOT_RRTYPE_RP:
+ case KNOT_RRTYPE_AAAA:
+ case KNOT_RRTYPE_LOC:
+ case KNOT_RRTYPE_SRV:
+ case KNOT_RRTYPE_NAPTR:
+ case KNOT_RRTYPE_CERT:
+ case KNOT_RRTYPE_DS:
+ case KNOT_RRTYPE_SSHFP:
+ case KNOT_RRTYPE_IPSECKEY:
+ case KNOT_RRTYPE_RRSIG:
+ case KNOT_RRTYPE_NSEC:
+ case KNOT_RRTYPE_KEY:
+ case KNOT_RRTYPE_DNSKEY:
+ case KNOT_RRTYPE_DHCID:
+ case KNOT_RRTYPE_NSEC3:
+ case KNOT_RRTYPE_NSEC3PARAM:
+ case KNOT_RRTYPE_TLSA:
+ case KNOT_RRTYPE_SMIMEA:
+ case KNOT_RRTYPE_CDS:
+ case KNOT_RRTYPE_CDNSKEY:
+ case KNOT_RRTYPE_OPENPGPKEY:
+ case KNOT_RRTYPE_CSYNC:
+ case KNOT_RRTYPE_ZONEMD:
+ case KNOT_RRTYPE_NID:
+ case KNOT_RRTYPE_L32:
+ case KNOT_RRTYPE_L64:
+ case KNOT_RRTYPE_LP:
+ case KNOT_RRTYPE_EUI48:
+ case KNOT_RRTYPE_EUI64:
+ case KNOT_RRTYPE_URI:
+ case KNOT_RRTYPE_CAA:
+ case KNOT_RRTYPE_SVCB:
+ case KNOT_RRTYPE_HTTPS:
+ fcall nonempty_hex_r_data;
+ // Next types can have empty rdata.
+ case KNOT_RRTYPE_APL:
+ default:
+ fcall hex_r_data;
+ }
+ }
+
+ # Avoidance of multiple fhold at the input block end.
+ action _wrap_in {
+ if (pe - p == 1) {
+ *wrap = WRAP_DETECTED;
+ }
+ }
+ action _wrap_out {
+ if (*wrap == WRAP_NONE) {
+ fhold;
+ }
+ }
+
+ # rdata can be in text or hex format with leading "\#" string.
+ r_data =
+ ( sep . ^('\\' | all_wchar) $_text_r_data
+ | sep . '\\' $_wrap_in . ^'#' $_wrap_out $_text_r_data
+ | sep . '\\' . '#' $_hex_r_data # Hex format.
+ | sep? . end_wchar $_text_r_data # Empty rdata.
+ ) >_r_data_init $!_r_data_error;
+ # END
+
+ # BEGIN - Record type processing
+ action _r_type_error {
+ WARN(ZS_UNSUPPORTED_TYPE);
+ fhold; fgoto err_line;
+ }
+
+ r_type =
+ ( "A"i %{ s->r_type = KNOT_RRTYPE_A; }
+ | "NS"i %{ s->r_type = KNOT_RRTYPE_NS; }
+ | "CNAME"i %{ s->r_type = KNOT_RRTYPE_CNAME; }
+ | "SOA"i %{ s->r_type = KNOT_RRTYPE_SOA; }
+ | "PTR"i %{ s->r_type = KNOT_RRTYPE_PTR; }
+ | "HINFO"i %{ s->r_type = KNOT_RRTYPE_HINFO; }
+ | "MINFO"i %{ s->r_type = KNOT_RRTYPE_MINFO; }
+ | "MX"i %{ s->r_type = KNOT_RRTYPE_MX; }
+ | "TXT"i %{ s->r_type = KNOT_RRTYPE_TXT; }
+ | "RP"i %{ s->r_type = KNOT_RRTYPE_RP; }
+ | "AFSDB"i %{ s->r_type = KNOT_RRTYPE_AFSDB; }
+ | "RT"i %{ s->r_type = KNOT_RRTYPE_RT; }
+ | "KEY"i %{ s->r_type = KNOT_RRTYPE_KEY; }
+ | "AAAA"i %{ s->r_type = KNOT_RRTYPE_AAAA; }
+ | "LOC"i %{ s->r_type = KNOT_RRTYPE_LOC; }
+ | "SRV"i %{ s->r_type = KNOT_RRTYPE_SRV; }
+ | "NAPTR"i %{ s->r_type = KNOT_RRTYPE_NAPTR; }
+ | "KX"i %{ s->r_type = KNOT_RRTYPE_KX; }
+ | "CERT"i %{ s->r_type = KNOT_RRTYPE_CERT; }
+ | "DNAME"i %{ s->r_type = KNOT_RRTYPE_DNAME; }
+ | "APL"i %{ s->r_type = KNOT_RRTYPE_APL; }
+ | "DS"i %{ s->r_type = KNOT_RRTYPE_DS; }
+ | "SSHFP"i %{ s->r_type = KNOT_RRTYPE_SSHFP; }
+ | "IPSECKEY"i %{ s->r_type = KNOT_RRTYPE_IPSECKEY; }
+ | "RRSIG"i %{ s->r_type = KNOT_RRTYPE_RRSIG; }
+ | "NSEC"i %{ s->r_type = KNOT_RRTYPE_NSEC; }
+ | "DNSKEY"i %{ s->r_type = KNOT_RRTYPE_DNSKEY; }
+ | "DHCID"i %{ s->r_type = KNOT_RRTYPE_DHCID; }
+ | "NSEC3"i %{ s->r_type = KNOT_RRTYPE_NSEC3; }
+ | "NSEC3PARAM"i %{ s->r_type = KNOT_RRTYPE_NSEC3PARAM; }
+ | "TLSA"i %{ s->r_type = KNOT_RRTYPE_TLSA; }
+ | "SMIMEA"i %{ s->r_type = KNOT_RRTYPE_SMIMEA; }
+ | "CDS"i %{ s->r_type = KNOT_RRTYPE_CDS; }
+ | "CDNSKEY"i %{ s->r_type = KNOT_RRTYPE_CDNSKEY; }
+ | "OPENPGPKEY"i %{ s->r_type = KNOT_RRTYPE_OPENPGPKEY; }
+ | "CSYNC"i %{ s->r_type = KNOT_RRTYPE_CSYNC; }
+ | "ZONEMD"i %{ s->r_type = KNOT_RRTYPE_ZONEMD; }
+ | "SPF"i %{ s->r_type = KNOT_RRTYPE_SPF; }
+ | "NID"i %{ s->r_type = KNOT_RRTYPE_NID; }
+ | "L32"i %{ s->r_type = KNOT_RRTYPE_L32; }
+ | "L64"i %{ s->r_type = KNOT_RRTYPE_L64; }
+ | "LP"i %{ s->r_type = KNOT_RRTYPE_LP; }
+ | "EUI48"i %{ s->r_type = KNOT_RRTYPE_EUI48; }
+ | "EUI64"i %{ s->r_type = KNOT_RRTYPE_EUI64; }
+ | "URI"i %{ s->r_type = KNOT_RRTYPE_URI; }
+ | "CAA"i %{ s->r_type = KNOT_RRTYPE_CAA; }
+ | "SVCB"i %{ s->r_type = KNOT_RRTYPE_SVCB; }
+ | "HTTPS"i %{ s->r_type = KNOT_RRTYPE_HTTPS; }
+ | "TYPE"i . type_number
+ ) $!_r_type_error;
+ # END
+
+ # BEGIN - The highest level processing
+ action _record_exit {
+ if (rdata_tail - s->r_data > UINT16_MAX) {
+ WARN(ZS_RDATA_OVERFLOW);
+ fhold; fgoto err_line;
+ }
+ s->r_data_length = rdata_tail - s->r_data;
+
+ s->state = ZS_STATE_DATA;
+
+ // Execute the record callback.
+ if (s->process.automatic) {
+ if (s->process.record != NULL) {
+ s->process.record(s);
+
+ // Stop if required from the callback.
+ if (s->state == ZS_STATE_STOP) {
+ fbreak;
+ }
+ }
+ } else {
+ // Return if external processing.
+ fhold; fbreak;
+ }
+ }
+
+ # Resource record.
+ record =
+ r_owner . sep .
+ ( (r_class . sep . ((r_ttl . sep) | (zlen %_default_r_ttl_exit )))
+ | (r_ttl . sep . ((r_class . sep) | (zlen %_default_r_class_exit)))
+ | zlen %_default_r_class_exit %_default_r_ttl_exit
+ ) $!_r_type_error .
+ r_type . r_data .
+ rest %_record_exit .
+ newline;
+
+ # Blank spaces with comments.
+ blank = rest . newline;
+
+ # Main processing loop.
+ main := (record | directive | blank)*;
+ # END
+}%%
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 23:05:35 +0000