contrib/unbound/util/configlexer.lex

   1 %{
   2 /*
   3  * configlexer.lex - lexical analyzer for unbound config file
   4  *
   5  * Copyright (c) 2001-2006, NLnet Labs. All rights reserved
   6  *
   7  * See LICENSE for the license.
   8  *
   9  */
  10 #include "config.h"
  11
  12 /* because flex keeps having sign-unsigned compare problems that are unfixed*/
  13 #if defined(__clang__)||(defined(__GNUC__)&&((__GNUC__ >4)||(defined(__GNUC_MINOR__)&&(__GNUC__ ==4)&&(__GNUC_MINOR__ >=2))))
  14 #pragma GCC diagnostic ignored "-Wsign-compare"
  15 #endif
  16
  17 #include <ctype.h>
  18 #include <strings.h>
  19 #ifdef HAVE_GLOB_H
  20 # include <glob.h>
  21 #endif
  22
  23 #include "util/config_file.h"
  24 #include "configparser.h"
  25 void ub_c_error(const char *message);
  26
  27 #if 0
  28 #define LEXOUT(s)  printf s /* used ONLY when debugging */
  29 #else
  30 #define LEXOUT(s)
  31 #endif
  32
  33 /** avoid warning in about fwrite return value */
  34 #define ECHO ub_c_error_msg("syntax error at text: %s", ub_c_text)
  35
  36 /** A parser variable, this is a statement in the config file which is
  37  * of the form variable: value1 value2 ...  nargs is the number of values. */
  38 #define YDVAR(nargs, var) \
  39         num_args=(nargs); \
  40         LEXOUT(("v(%s%d) ", ub_c_text, num_args)); \
  41         if(num_args > 0) { BEGIN(val); } \
  42         return (var);
  43
  44 struct inc_state {
  45         char* filename;
  46         int line;
  47         YY_BUFFER_STATE buffer;
  48         struct inc_state* next;
  49 };
  50 static struct inc_state* config_include_stack = NULL;
  51 static int inc_depth = 0;
  52 static int inc_prev = 0;
  53 static int num_args = 0;
  54
  55 void init_cfg_parse(void)
  56 {
  57         config_include_stack = NULL;
  58         inc_depth = 0;
  59         inc_prev = 0;
  60         num_args = 0;
  61 }
  62
  63 static void config_start_include(const char* filename)
  64 {
  65         FILE *input;
  66         struct inc_state* s;
  67         char* nm;
  68         if(inc_depth++ > 100000) {
  69                 ub_c_error_msg("too many include files");
  70                 return;
  71         }
  72         if(*filename == '\0') {
  73                 ub_c_error_msg("empty include file name");
  74                 return;
  75         }
  76         s = (struct inc_state*)malloc(sizeof(*s));
  77         if(!s) {
  78                 ub_c_error_msg("include %s: malloc failure", filename);
  79                 return;
  80         }
  81         if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
  82                 strlen(cfg_parser->chroot)) == 0) {
  83                 filename += strlen(cfg_parser->chroot);
  84         }
  85         nm = strdup(filename);
  86         if(!nm) {
  87                 ub_c_error_msg("include %s: strdup failure", filename);
  88                 free(s);
  89                 return;
  90         }
  91         input = fopen(filename, "r");
  92         if(!input) {
  93                 ub_c_error_msg("cannot open include file '%s': %s",
  94                         filename, strerror(errno));
  95                 free(s);
  96                 free(nm);
  97                 return;
  98         }
  99         LEXOUT(("switch_to_include_file(%s)\n", filename));
 100         s->filename = cfg_parser->filename;
 101         s->line = cfg_parser->line;
 102         s->buffer = YY_CURRENT_BUFFER;
 103         s->next = config_include_stack;
 104         config_include_stack = s;
 105         cfg_parser->filename = nm;
 106         cfg_parser->line = 1;
 107         yy_switch_to_buffer(yy_create_buffer(input, YY_BUF_SIZE));
 108 }
 109
 110 static void config_start_include_glob(const char* filename)
 111 {
 112
 113         /* check for wildcards */
 114 #ifdef HAVE_GLOB
 115         glob_t g;
 116         size_t i;
 117         int r, flags;
 118         if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') &&
 119                 !strchr(filename, '{') && !strchr(filename, '~'))) {
 120                 flags = 0
 121 #ifdef GLOB_ERR
 122                         | GLOB_ERR
 123 #endif
 124                          /* do not set GLOB_NOSORT so the results are sorted
 125                             and in a predictable order. */
 126 #ifdef GLOB_BRACE
 127                         | GLOB_BRACE
 128 #endif
 129 #ifdef GLOB_TILDE
 130                         | GLOB_TILDE
 131 #endif
 132                 ;
 133                 memset(&g, 0, sizeof(g));
 134                 if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
 135                         strlen(cfg_parser->chroot)) == 0) {
 136                         filename += strlen(cfg_parser->chroot);
 137                 }
 138                 r = glob(filename, flags, NULL, &g);
 139                 if(r) {
 140                         /* some error */
 141                         globfree(&g);
 142                         if(r == GLOB_NOMATCH)
 143                                 return; /* no matches for pattern */
 144                         config_start_include(filename); /* let original deal with it */
 145                         return;
 146                 }
 147                 /* process files found, if any */
 148                 for(i=0; i<(size_t)g.gl_pathc; i++) {
 149                         config_start_include(g.gl_pathv[i]);
 150                 }
 151                 globfree(&g);
 152                 return;
 153         }
 154 #endif /* HAVE_GLOB */
 155
 156         config_start_include(filename);
 157 }
 158
 159 static void config_end_include(void)
 160 {
 161         struct inc_state* s = config_include_stack;
 162         --inc_depth;
 163         if(!s) return;
 164         free(cfg_parser->filename);
 165         cfg_parser->filename = s->filename;
 166         cfg_parser->line = s->line;
 167         yy_delete_buffer(YY_CURRENT_BUFFER);
 168         yy_switch_to_buffer(s->buffer);
 169         config_include_stack = s->next;
 170         free(s);
 171 }
 172
 173 #ifndef yy_set_bol /* compat definition, for flex 2.4.6 */
 174 #define yy_set_bol(at_bol) \
 175         { \
 176                 if ( ! yy_current_buffer ) \
 177                         yy_current_buffer = yy_create_buffer( ub_c_in, YY_BUF_SIZE ); \
 178                 yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \
 179         }
 180 #endif
 181
 182 %}
 183 %option noinput
 184 %option nounput
 185 %{
 186 #ifndef YY_NO_UNPUT
 187 #define YY_NO_UNPUT 1
 188 #endif
 189 #ifndef YY_NO_INPUT
 190 #define YY_NO_INPUT 1
 191 #endif
 192 %}
 193
 194 SPACE   [ \t]
 195 LETTER  [a-zA-Z]
 196 UNQUOTEDLETTER [^\'\"\n\r \t\\]|\\.
 197 UNQUOTEDLETTER_NOCOLON [^\:\'\"\n\r \t\\]|\\.
 198 NEWLINE [\r\n]
 199 COMMENT \#
 200 COLON   \:
 201 DQANY     [^\"\n\r\\]|\\.
 202 SQANY     [^\'\n\r\\]|\\.
 203
 204 %x      quotedstring singlequotedstr include include_quoted val
 205
 206 %%
 207 <INITIAL,val>{SPACE}*   {
 208         LEXOUT(("SP ")); /* ignore */ }
 209 <INITIAL,val>{SPACE}*{COMMENT}.*        {
 210         /* note that flex makes the longest match and '.' is any but not nl */
 211         LEXOUT(("comment(%s) ", ub_c_text)); /* ignore */ }
 212 server{COLON}                   { YDVAR(0, VAR_SERVER) }
 213 qname-minimisation{COLON}       { YDVAR(1, VAR_QNAME_MINIMISATION) }
 214 qname-minimisation-strict{COLON} { YDVAR(1, VAR_QNAME_MINIMISATION_STRICT) }
 215 num-threads{COLON}              { YDVAR(1, VAR_NUM_THREADS) }
 216 verbosity{COLON}                { YDVAR(1, VAR_VERBOSITY) }
 217 port{COLON}                     { YDVAR(1, VAR_PORT) }
 218 outgoing-range{COLON}           { YDVAR(1, VAR_OUTGOING_RANGE) }
 219 outgoing-port-permit{COLON}     { YDVAR(1, VAR_OUTGOING_PORT_PERMIT) }
 220 outgoing-port-avoid{COLON}      { YDVAR(1, VAR_OUTGOING_PORT_AVOID) }
 221 outgoing-num-tcp{COLON}         { YDVAR(1, VAR_OUTGOING_NUM_TCP) }
 222 incoming-num-tcp{COLON}         { YDVAR(1, VAR_INCOMING_NUM_TCP) }
 223 do-ip4{COLON}                   { YDVAR(1, VAR_DO_IP4) }
 224 do-ip6{COLON}                   { YDVAR(1, VAR_DO_IP6) }
 225 prefer-ip6{COLON}               { YDVAR(1, VAR_PREFER_IP6) }
 226 do-udp{COLON}                   { YDVAR(1, VAR_DO_UDP) }
 227 do-tcp{COLON}                   { YDVAR(1, VAR_DO_TCP) }
 228 tcp-upstream{COLON}             { YDVAR(1, VAR_TCP_UPSTREAM) }
 229 tcp-mss{COLON}                  { YDVAR(1, VAR_TCP_MSS) }
 230 outgoing-tcp-mss{COLON}         { YDVAR(1, VAR_OUTGOING_TCP_MSS) }
 231 tcp-idle-timeout{COLON}         { YDVAR(1, VAR_TCP_IDLE_TIMEOUT) }
 232 edns-tcp-keepalive{COLON}       { YDVAR(1, VAR_EDNS_TCP_KEEPALIVE) }
 233 edns-tcp-keepalive-timeout{COLON} { YDVAR(1, VAR_EDNS_TCP_KEEPALIVE_TIMEOUT) }
 234 ssl-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 235 tls-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 236 ssl-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 237 tls-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 238 ssl-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 239 tls-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 240 ssl-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 241 tls-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 242 ssl-cert-bundle{COLON}          { YDVAR(1, VAR_TLS_CERT_BUNDLE) }
 243 tls-cert-bundle{COLON}          { YDVAR(1, VAR_TLS_CERT_BUNDLE) }
 244 tls-win-cert{COLON}             { YDVAR(1, VAR_TLS_WIN_CERT) }
 245 additional-ssl-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 246 additional-tls-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 247 tls-additional-ports{COLON}     { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 248 tls-additional-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 249 tls-session-ticket-keys{COLON}  { YDVAR(1, VAR_TLS_SESSION_TICKET_KEYS) }
 250 tls-ciphers{COLON}              { YDVAR(1, VAR_TLS_CIPHERS) }
 251 tls-ciphersuites{COLON}         { YDVAR(1, VAR_TLS_CIPHERSUITES) }
 252 use-systemd{COLON}              { YDVAR(1, VAR_USE_SYSTEMD) }
 253 do-daemonize{COLON}             { YDVAR(1, VAR_DO_DAEMONIZE) }
 254 interface{COLON}                { YDVAR(1, VAR_INTERFACE) }
 255 ip-address{COLON}               { YDVAR(1, VAR_INTERFACE) }
 256 outgoing-interface{COLON}       { YDVAR(1, VAR_OUTGOING_INTERFACE) }
 257 interface-automatic{COLON}      { YDVAR(1, VAR_INTERFACE_AUTOMATIC) }
 258 so-rcvbuf{COLON}                { YDVAR(1, VAR_SO_RCVBUF) }
 259 so-sndbuf{COLON}                { YDVAR(1, VAR_SO_SNDBUF) }
 260 so-reuseport{COLON}             { YDVAR(1, VAR_SO_REUSEPORT) }
 261 ip-transparent{COLON}           { YDVAR(1, VAR_IP_TRANSPARENT) }
 262 ip-freebind{COLON}              { YDVAR(1, VAR_IP_FREEBIND) }
 263 chroot{COLON}                   { YDVAR(1, VAR_CHROOT) }
 264 username{COLON}                 { YDVAR(1, VAR_USERNAME) }
 265 directory{COLON}                { YDVAR(1, VAR_DIRECTORY) }
 266 logfile{COLON}                  { YDVAR(1, VAR_LOGFILE) }
 267 pidfile{COLON}                  { YDVAR(1, VAR_PIDFILE) }
 268 root-hints{COLON}               { YDVAR(1, VAR_ROOT_HINTS) }
 269 stream-wait-size{COLON}         { YDVAR(1, VAR_STREAM_WAIT_SIZE) }
 270 edns-buffer-size{COLON}         { YDVAR(1, VAR_EDNS_BUFFER_SIZE) }
 271 msg-buffer-size{COLON}          { YDVAR(1, VAR_MSG_BUFFER_SIZE) }
 272 msg-cache-size{COLON}           { YDVAR(1, VAR_MSG_CACHE_SIZE) }
 273 msg-cache-slabs{COLON}          { YDVAR(1, VAR_MSG_CACHE_SLABS) }
 274 rrset-cache-size{COLON}         { YDVAR(1, VAR_RRSET_CACHE_SIZE) }
 275 rrset-cache-slabs{COLON}        { YDVAR(1, VAR_RRSET_CACHE_SLABS) }
 276 cache-max-ttl{COLON}            { YDVAR(1, VAR_CACHE_MAX_TTL) }
 277 cache-max-negative-ttl{COLON}   { YDVAR(1, VAR_CACHE_MAX_NEGATIVE_TTL) }
 278 cache-min-ttl{COLON}            { YDVAR(1, VAR_CACHE_MIN_TTL) }
 279 infra-host-ttl{COLON}           { YDVAR(1, VAR_INFRA_HOST_TTL) }
 280 infra-lame-ttl{COLON}           { YDVAR(1, VAR_INFRA_LAME_TTL) }
 281 infra-cache-slabs{COLON}        { YDVAR(1, VAR_INFRA_CACHE_SLABS) }
 282 infra-cache-numhosts{COLON}     { YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) }
 283 infra-cache-lame-size{COLON}    { YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) }
 284 infra-cache-min-rtt{COLON}      { YDVAR(1, VAR_INFRA_CACHE_MIN_RTT) }
 285 num-queries-per-thread{COLON}   { YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) }
 286 jostle-timeout{COLON}           { YDVAR(1, VAR_JOSTLE_TIMEOUT) }
 287 delay-close{COLON}              { YDVAR(1, VAR_DELAY_CLOSE) }
 288 target-fetch-policy{COLON}      { YDVAR(1, VAR_TARGET_FETCH_POLICY) }
 289 harden-short-bufsize{COLON}     { YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) }
 290 harden-large-queries{COLON}     { YDVAR(1, VAR_HARDEN_LARGE_QUERIES) }
 291 harden-glue{COLON}              { YDVAR(1, VAR_HARDEN_GLUE) }
 292 harden-dnssec-stripped{COLON}   { YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) }
 293 harden-below-nxdomain{COLON}    { YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) }
 294 harden-referral-path{COLON}     { YDVAR(1, VAR_HARDEN_REFERRAL_PATH) }
 295 harden-algo-downgrade{COLON}    { YDVAR(1, VAR_HARDEN_ALGO_DOWNGRADE) }
 296 use-caps-for-id{COLON}          { YDVAR(1, VAR_USE_CAPS_FOR_ID) }
 297 caps-whitelist{COLON}           { YDVAR(1, VAR_CAPS_WHITELIST) }
 298 unwanted-reply-threshold{COLON} { YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) }
 299 private-address{COLON}          { YDVAR(1, VAR_PRIVATE_ADDRESS) }
 300 private-domain{COLON}           { YDVAR(1, VAR_PRIVATE_DOMAIN) }
 301 prefetch-key{COLON}             { YDVAR(1, VAR_PREFETCH_KEY) }
 302 prefetch{COLON}                 { YDVAR(1, VAR_PREFETCH) }
 303 deny-any{COLON}                 { YDVAR(1, VAR_DENY_ANY) }
 304 stub-zone{COLON}                { YDVAR(0, VAR_STUB_ZONE) }
 305 name{COLON}                     { YDVAR(1, VAR_NAME) }
 306 stub-addr{COLON}                { YDVAR(1, VAR_STUB_ADDR) }
 307 stub-host{COLON}                { YDVAR(1, VAR_STUB_HOST) }
 308 stub-prime{COLON}               { YDVAR(1, VAR_STUB_PRIME) }
 309 stub-first{COLON}               { YDVAR(1, VAR_STUB_FIRST) }
 310 stub-no-cache{COLON}            { YDVAR(1, VAR_STUB_NO_CACHE) }
 311 stub-ssl-upstream{COLON}        { YDVAR(1, VAR_STUB_SSL_UPSTREAM) }
 312 stub-tls-upstream{COLON}        { YDVAR(1, VAR_STUB_SSL_UPSTREAM) }
 313 forward-zone{COLON}             { YDVAR(0, VAR_FORWARD_ZONE) }
 314 forward-addr{COLON}             { YDVAR(1, VAR_FORWARD_ADDR) }
 315 forward-host{COLON}             { YDVAR(1, VAR_FORWARD_HOST) }
 316 forward-first{COLON}            { YDVAR(1, VAR_FORWARD_FIRST) }
 317 forward-no-cache{COLON}         { YDVAR(1, VAR_FORWARD_NO_CACHE) }
 318 forward-ssl-upstream{COLON}     { YDVAR(1, VAR_FORWARD_SSL_UPSTREAM) }
 319 forward-tls-upstream{COLON}     { YDVAR(1, VAR_FORWARD_SSL_UPSTREAM) }
 320 auth-zone{COLON}                { YDVAR(0, VAR_AUTH_ZONE) }
 321 zonefile{COLON}                 { YDVAR(1, VAR_ZONEFILE) }
 322 master{COLON}                   { YDVAR(1, VAR_MASTER) }
 323 url{COLON}                      { YDVAR(1, VAR_URL) }
 324 allow-notify{COLON}             { YDVAR(1, VAR_ALLOW_NOTIFY) }
 325 for-downstream{COLON}           { YDVAR(1, VAR_FOR_DOWNSTREAM) }
 326 for-upstream{COLON}             { YDVAR(1, VAR_FOR_UPSTREAM) }
 327 fallback-enabled{COLON}         { YDVAR(1, VAR_FALLBACK_ENABLED) }
 328 view{COLON}                     { YDVAR(0, VAR_VIEW) }
 329 view-first{COLON}               { YDVAR(1, VAR_VIEW_FIRST) }
 330 do-not-query-address{COLON}     { YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) }
 331 do-not-query-localhost{COLON}   { YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) }
 332 access-control{COLON}           { YDVAR(2, VAR_ACCESS_CONTROL) }
 333 send-client-subnet{COLON}       { YDVAR(1, VAR_SEND_CLIENT_SUBNET) }
 334 client-subnet-zone{COLON}       { YDVAR(1, VAR_CLIENT_SUBNET_ZONE) }
 335 client-subnet-always-forward{COLON} { YDVAR(1, VAR_CLIENT_SUBNET_ALWAYS_FORWARD) }
 336 client-subnet-opcode{COLON}     { YDVAR(1, VAR_CLIENT_SUBNET_OPCODE) }
 337 max-client-subnet-ipv4{COLON}   { YDVAR(1, VAR_MAX_CLIENT_SUBNET_IPV4) }
 338 max-client-subnet-ipv6{COLON}   { YDVAR(1, VAR_MAX_CLIENT_SUBNET_IPV6) }
 339 min-client-subnet-ipv4{COLON}   { YDVAR(1, VAR_MIN_CLIENT_SUBNET_IPV4) }
 340 min-client-subnet-ipv6{COLON}   { YDVAR(1, VAR_MIN_CLIENT_SUBNET_IPV6) }
 341 max-ecs-tree-size-ipv4{COLON}   { YDVAR(1, VAR_MAX_ECS_TREE_SIZE_IPV4) }
 342 max-ecs-tree-size-ipv6{COLON}   { YDVAR(1, VAR_MAX_ECS_TREE_SIZE_IPV6) }
 343 hide-identity{COLON}            { YDVAR(1, VAR_HIDE_IDENTITY) }
 344 hide-version{COLON}             { YDVAR(1, VAR_HIDE_VERSION) }
 345 hide-trustanchor{COLON}         { YDVAR(1, VAR_HIDE_TRUSTANCHOR) }
 346 identity{COLON}                 { YDVAR(1, VAR_IDENTITY) }
 347 version{COLON}                  { YDVAR(1, VAR_VERSION) }
 348 module-config{COLON}            { YDVAR(1, VAR_MODULE_CONF) }
 349 dlv-anchor{COLON}               { YDVAR(1, VAR_DLV_ANCHOR) }
 350 dlv-anchor-file{COLON}          { YDVAR(1, VAR_DLV_ANCHOR_FILE) }
 351 trust-anchor-file{COLON}        { YDVAR(1, VAR_TRUST_ANCHOR_FILE) }
 352 auto-trust-anchor-file{COLON}   { YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) }
 353 trusted-keys-file{COLON}        { YDVAR(1, VAR_TRUSTED_KEYS_FILE) }
 354 trust-anchor{COLON}             { YDVAR(1, VAR_TRUST_ANCHOR) }
 355 trust-anchor-signaling{COLON}   { YDVAR(1, VAR_TRUST_ANCHOR_SIGNALING) }
 356 root-key-sentinel{COLON}        { YDVAR(1, VAR_ROOT_KEY_SENTINEL) }
 357 val-override-date{COLON}        { YDVAR(1, VAR_VAL_OVERRIDE_DATE) }
 358 val-sig-skew-min{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MIN) }
 359 val-sig-skew-max{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MAX) }
 360 val-bogus-ttl{COLON}            { YDVAR(1, VAR_BOGUS_TTL) }
 361 val-clean-additional{COLON}     { YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) }
 362 val-permissive-mode{COLON}      { YDVAR(1, VAR_VAL_PERMISSIVE_MODE) }
 363 aggressive-nsec{COLON}          { YDVAR(1, VAR_AGGRESSIVE_NSEC) }
 364 ignore-cd-flag{COLON}           { YDVAR(1, VAR_IGNORE_CD_FLAG) }
 365 serve-expired{COLON}            { YDVAR(1, VAR_SERVE_EXPIRED) }
 366 serve-expired-ttl{COLON}        { YDVAR(1, VAR_SERVE_EXPIRED_TTL) }
 367 serve-expired-ttl-reset{COLON}  { YDVAR(1, VAR_SERVE_EXPIRED_TTL_RESET) }
 368 fake-dsa{COLON}                 { YDVAR(1, VAR_FAKE_DSA) }
 369 fake-sha1{COLON}                { YDVAR(1, VAR_FAKE_SHA1) }
 370 val-log-level{COLON}            { YDVAR(1, VAR_VAL_LOG_LEVEL) }
 371 key-cache-size{COLON}           { YDVAR(1, VAR_KEY_CACHE_SIZE) }
 372 key-cache-slabs{COLON}          { YDVAR(1, VAR_KEY_CACHE_SLABS) }
 373 neg-cache-size{COLON}           { YDVAR(1, VAR_NEG_CACHE_SIZE) }
 374 val-nsec3-keysize-iterations{COLON}     {
 375                                   YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) }
 376 add-holddown{COLON}             { YDVAR(1, VAR_ADD_HOLDDOWN) }
 377 del-holddown{COLON}             { YDVAR(1, VAR_DEL_HOLDDOWN) }
 378 keep-missing{COLON}             { YDVAR(1, VAR_KEEP_MISSING) }
 379 permit-small-holddown{COLON}    { YDVAR(1, VAR_PERMIT_SMALL_HOLDDOWN) }
 380 use-syslog{COLON}               { YDVAR(1, VAR_USE_SYSLOG) }
 381 log-identity{COLON}             { YDVAR(1, VAR_LOG_IDENTITY) }
 382 log-time-ascii{COLON}           { YDVAR(1, VAR_LOG_TIME_ASCII) }
 383 log-queries{COLON}              { YDVAR(1, VAR_LOG_QUERIES) }
 384 log-replies{COLON}              { YDVAR(1, VAR_LOG_REPLIES) }
 385 log-tag-queryreply{COLON}       { YDVAR(1, VAR_LOG_TAG_QUERYREPLY) }
 386 log-local-actions{COLON}       { YDVAR(1, VAR_LOG_LOCAL_ACTIONS) }
 387 log-servfail{COLON}             { YDVAR(1, VAR_LOG_SERVFAIL) }
 388 local-zone{COLON}               { YDVAR(2, VAR_LOCAL_ZONE) }
 389 local-data{COLON}               { YDVAR(1, VAR_LOCAL_DATA) }
 390 local-data-ptr{COLON}           { YDVAR(1, VAR_LOCAL_DATA_PTR) }
 391 unblock-lan-zones{COLON}        { YDVAR(1, VAR_UNBLOCK_LAN_ZONES) }
 392 insecure-lan-zones{COLON}       { YDVAR(1, VAR_INSECURE_LAN_ZONES) }
 393 statistics-interval{COLON}      { YDVAR(1, VAR_STATISTICS_INTERVAL) }
 394 statistics-cumulative{COLON}    { YDVAR(1, VAR_STATISTICS_CUMULATIVE) }
 395 extended-statistics{COLON}      { YDVAR(1, VAR_EXTENDED_STATISTICS) }
 396 shm-enable{COLON}               { YDVAR(1, VAR_SHM_ENABLE) }
 397 shm-key{COLON}                  { YDVAR(1, VAR_SHM_KEY) }
 398 remote-control{COLON}           { YDVAR(0, VAR_REMOTE_CONTROL) }
 399 control-enable{COLON}           { YDVAR(1, VAR_CONTROL_ENABLE) }
 400 control-interface{COLON}        { YDVAR(1, VAR_CONTROL_INTERFACE) }
 401 control-port{COLON}             { YDVAR(1, VAR_CONTROL_PORT) }
 402 control-use-cert{COLON}         { YDVAR(1, VAR_CONTROL_USE_CERT) }
 403 server-key-file{COLON}          { YDVAR(1, VAR_SERVER_KEY_FILE) }
 404 server-cert-file{COLON}         { YDVAR(1, VAR_SERVER_CERT_FILE) }
 405 control-key-file{COLON}         { YDVAR(1, VAR_CONTROL_KEY_FILE) }
 406 control-cert-file{COLON}        { YDVAR(1, VAR_CONTROL_CERT_FILE) }
 407 python-script{COLON}            { YDVAR(1, VAR_PYTHON_SCRIPT) }
 408 python{COLON}                   { YDVAR(0, VAR_PYTHON) }
 409 domain-insecure{COLON}          { YDVAR(1, VAR_DOMAIN_INSECURE) }
 410 minimal-responses{COLON}        { YDVAR(1, VAR_MINIMAL_RESPONSES) }
 411 rrset-roundrobin{COLON}         { YDVAR(1, VAR_RRSET_ROUNDROBIN) }
 412 unknown-server-time-limit{COLON} { YDVAR(1, VAR_UNKNOWN_SERVER_TIME_LIMIT) }
 413 max-udp-size{COLON}             { YDVAR(1, VAR_MAX_UDP_SIZE) }
 414 dns64-prefix{COLON}             { YDVAR(1, VAR_DNS64_PREFIX) }
 415 dns64-synthall{COLON}           { YDVAR(1, VAR_DNS64_SYNTHALL) }
 416 dns64-ignore-aaaa{COLON}        { YDVAR(1, VAR_DNS64_IGNORE_AAAA) }
 417 define-tag{COLON}               { YDVAR(1, VAR_DEFINE_TAG) }
 418 local-zone-tag{COLON}           { YDVAR(2, VAR_LOCAL_ZONE_TAG) }
 419 access-control-tag{COLON}       { YDVAR(2, VAR_ACCESS_CONTROL_TAG) }
 420 access-control-tag-action{COLON} { YDVAR(3, VAR_ACCESS_CONTROL_TAG_ACTION) }
 421 access-control-tag-data{COLON}  { YDVAR(3, VAR_ACCESS_CONTROL_TAG_DATA) }
 422 access-control-view{COLON}      { YDVAR(2, VAR_ACCESS_CONTROL_VIEW) }
 423 local-zone-override{COLON}      { YDVAR(3, VAR_LOCAL_ZONE_OVERRIDE) }
 424 dnstap{COLON}                   { YDVAR(0, VAR_DNSTAP) }
 425 dnstap-enable{COLON}            { YDVAR(1, VAR_DNSTAP_ENABLE) }
 426 dnstap-socket-path{COLON}       { YDVAR(1, VAR_DNSTAP_SOCKET_PATH) }
 427 dnstap-send-identity{COLON}     { YDVAR(1, VAR_DNSTAP_SEND_IDENTITY) }
 428 dnstap-send-version{COLON}      { YDVAR(1, VAR_DNSTAP_SEND_VERSION) }
 429 dnstap-identity{COLON}          { YDVAR(1, VAR_DNSTAP_IDENTITY) }
 430 dnstap-version{COLON}           { YDVAR(1, VAR_DNSTAP_VERSION) }
 431 dnstap-log-resolver-query-messages{COLON}       {
 432                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES) }
 433 dnstap-log-resolver-response-messages{COLON}    {
 434                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES) }
 435 dnstap-log-client-query-messages{COLON}         {
 436                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES) }
 437 dnstap-log-client-response-messages{COLON}      {
 438                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES) }
 439 dnstap-log-forwarder-query-messages{COLON}      {
 440                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES) }
 441 dnstap-log-forwarder-response-messages{COLON}   {
 442                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) }
 443 disable-dnssec-lame-check{COLON} { YDVAR(1, VAR_DISABLE_DNSSEC_LAME_CHECK) }
 444 ip-ratelimit{COLON}             { YDVAR(1, VAR_IP_RATELIMIT) }
 445 ratelimit{COLON}                { YDVAR(1, VAR_RATELIMIT) }
 446 ip-ratelimit-slabs{COLON}               { YDVAR(1, VAR_IP_RATELIMIT_SLABS) }
 447 ratelimit-slabs{COLON}          { YDVAR(1, VAR_RATELIMIT_SLABS) }
 448 ip-ratelimit-size{COLON}                { YDVAR(1, VAR_IP_RATELIMIT_SIZE) }
 449 ratelimit-size{COLON}           { YDVAR(1, VAR_RATELIMIT_SIZE) }
 450 ratelimit-for-domain{COLON}     { YDVAR(2, VAR_RATELIMIT_FOR_DOMAIN) }
 451 ratelimit-below-domain{COLON}   { YDVAR(2, VAR_RATELIMIT_BELOW_DOMAIN) }
 452 ip-ratelimit-factor{COLON}              { YDVAR(1, VAR_IP_RATELIMIT_FACTOR) }
 453 ratelimit-factor{COLON}         { YDVAR(1, VAR_RATELIMIT_FACTOR) }
 454 low-rtt{COLON}                  { YDVAR(1, VAR_LOW_RTT) }
 455 fast-server-num{COLON}          { YDVAR(1, VAR_FAST_SERVER_NUM) }
 456 low-rtt-pct{COLON}              { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 457 low-rtt-permil{COLON}           { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 458 fast-server-permil{COLON}       { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 459 response-ip-tag{COLON}          { YDVAR(2, VAR_RESPONSE_IP_TAG) }
 460 response-ip{COLON}              { YDVAR(2, VAR_RESPONSE_IP) }
 461 response-ip-data{COLON}         { YDVAR(2, VAR_RESPONSE_IP_DATA) }
 462 dnscrypt{COLON}                 { YDVAR(0, VAR_DNSCRYPT) }
 463 dnscrypt-enable{COLON}          { YDVAR(1, VAR_DNSCRYPT_ENABLE) }
 464 dnscrypt-port{COLON}            { YDVAR(1, VAR_DNSCRYPT_PORT) }
 465 dnscrypt-provider{COLON}        { YDVAR(1, VAR_DNSCRYPT_PROVIDER) }
 466 dnscrypt-secret-key{COLON}      { YDVAR(1, VAR_DNSCRYPT_SECRET_KEY) }
 467 dnscrypt-provider-cert{COLON}   { YDVAR(1, VAR_DNSCRYPT_PROVIDER_CERT) }
 468 dnscrypt-provider-cert-rotated{COLON}   { YDVAR(1, VAR_DNSCRYPT_PROVIDER_CERT_ROTATED) }
 469 dnscrypt-shared-secret-cache-size{COLON}        {
 470                 YDVAR(1, VAR_DNSCRYPT_SHARED_SECRET_CACHE_SIZE) }
 471 dnscrypt-shared-secret-cache-slabs{COLON}       {
 472                 YDVAR(1, VAR_DNSCRYPT_SHARED_SECRET_CACHE_SLABS) }
 473 dnscrypt-nonce-cache-size{COLON}        { YDVAR(1, VAR_DNSCRYPT_NONCE_CACHE_SIZE) }
 474 dnscrypt-nonce-cache-slabs{COLON}       { YDVAR(1, VAR_DNSCRYPT_NONCE_CACHE_SLABS) }
 475 ipsecmod-enabled{COLON}         { YDVAR(1, VAR_IPSECMOD_ENABLED) }
 476 ipsecmod-ignore-bogus{COLON}    { YDVAR(1, VAR_IPSECMOD_IGNORE_BOGUS) }
 477 ipsecmod-hook{COLON}            { YDVAR(1, VAR_IPSECMOD_HOOK) }
 478 ipsecmod-max-ttl{COLON}         { YDVAR(1, VAR_IPSECMOD_MAX_TTL) }
 479 ipsecmod-whitelist{COLON}       { YDVAR(1, VAR_IPSECMOD_WHITELIST) }
 480 ipsecmod-strict{COLON}          { YDVAR(1, VAR_IPSECMOD_STRICT) }
 481 cachedb{COLON}                  { YDVAR(0, VAR_CACHEDB) }
 482 backend{COLON}                  { YDVAR(1, VAR_CACHEDB_BACKEND) }
 483 secret-seed{COLON}              { YDVAR(1, VAR_CACHEDB_SECRETSEED) }
 484 redis-server-host{COLON}        { YDVAR(1, VAR_CACHEDB_REDISHOST) }
 485 redis-server-port{COLON}        { YDVAR(1, VAR_CACHEDB_REDISPORT) }
 486 redis-timeout{COLON}            { YDVAR(1, VAR_CACHEDB_REDISTIMEOUT) }
 487 udp-upstream-without-downstream{COLON} { YDVAR(1, VAR_UDP_UPSTREAM_WITHOUT_DOWNSTREAM) }
 488 tcp-connection-limit{COLON}     { YDVAR(2, VAR_TCP_CONNECTION_LIMIT) }
 489 <INITIAL,val>{NEWLINE}          { LEXOUT(("NL\n")); cfg_parser->line++; }
 490
 491         /* Quoted strings. Strip leading and ending quotes */
 492 <val>\"                 { BEGIN(quotedstring); LEXOUT(("QS ")); }
 493 <quotedstring><<EOF>>   {
 494         ub_c_error("EOF inside quoted string");
 495         if(--num_args == 0) { BEGIN(INITIAL); }
 496         else                { BEGIN(val); }
 497 }
 498 <quotedstring>{DQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 499 <quotedstring>{NEWLINE} { ub_c_error("newline inside quoted string, no end \"");
 500                           cfg_parser->line++; BEGIN(INITIAL); }
 501 <quotedstring>\" {
 502         LEXOUT(("QE "));
 503         if(--num_args == 0) { BEGIN(INITIAL); }
 504         else                { BEGIN(val); }
 505         ub_c_text[ub_c_leng - 1] = '\0';
 506         ub_c_lval.str = strdup(ub_c_text);
 507         if(!ub_c_lval.str)
 508                 ub_c_error("out of memory");
 509         return STRING_ARG;
 510 }
 511
 512         /* Single Quoted strings. Strip leading and ending quotes */
 513 <val>\'                 { BEGIN(singlequotedstr); LEXOUT(("SQS ")); }
 514 <singlequotedstr><<EOF>>   {
 515         ub_c_error("EOF inside quoted string");
 516         if(--num_args == 0) { BEGIN(INITIAL); }
 517         else                { BEGIN(val); }
 518 }
 519 <singlequotedstr>{SQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 520 <singlequotedstr>{NEWLINE} { ub_c_error("newline inside quoted string, no end '");
 521                              cfg_parser->line++; BEGIN(INITIAL); }
 522 <singlequotedstr>\' {
 523         LEXOUT(("SQE "));
 524         if(--num_args == 0) { BEGIN(INITIAL); }
 525         else                { BEGIN(val); }
 526         ub_c_text[ub_c_leng - 1] = '\0';
 527         ub_c_lval.str = strdup(ub_c_text);
 528         if(!ub_c_lval.str)
 529                 ub_c_error("out of memory");
 530         return STRING_ARG;
 531 }
 532
 533         /* include: directive */
 534 <INITIAL,val>include{COLON}     {
 535         LEXOUT(("v(%s) ", ub_c_text)); inc_prev = YYSTATE; BEGIN(include); }
 536 <include><<EOF>>        {
 537         ub_c_error("EOF inside include directive");
 538         BEGIN(inc_prev);
 539 }
 540 <include>{SPACE}*       { LEXOUT(("ISP ")); /* ignore */ }
 541 <include>{NEWLINE}      { LEXOUT(("NL\n")); cfg_parser->line++;}
 542 <include>\"             { LEXOUT(("IQS ")); BEGIN(include_quoted); }
 543 <include>{UNQUOTEDLETTER}*      {
 544         LEXOUT(("Iunquotedstr(%s) ", ub_c_text));
 545         config_start_include_glob(ub_c_text);
 546         BEGIN(inc_prev);
 547 }
 548 <include_quoted><<EOF>> {
 549         ub_c_error("EOF inside quoted string");
 550         BEGIN(inc_prev);
 551 }
 552 <include_quoted>{DQANY}*        { LEXOUT(("ISTR(%s) ", ub_c_text)); yymore(); }
 553 <include_quoted>{NEWLINE}       { ub_c_error("newline before \" in include name");
 554                                   cfg_parser->line++; BEGIN(inc_prev); }
 555 <include_quoted>\"      {
 556         LEXOUT(("IQE "));
 557         ub_c_text[ub_c_leng - 1] = '\0';
 558         config_start_include_glob(ub_c_text);
 559         BEGIN(inc_prev);
 560 }
 561 <INITIAL,val><<EOF>>    {
 562         LEXOUT(("LEXEOF "));
 563         yy_set_bol(1); /* Set beginning of line, so "^" rules match.  */
 564         if (!config_include_stack) {
 565                 yyterminate();
 566         } else {
 567                 fclose(ub_c_in);
 568                 config_end_include();
 569         }
 570 }
 571
 572 <val>{UNQUOTEDLETTER}*  { LEXOUT(("unquotedstr(%s) ", ub_c_text));
 573                         if(--num_args == 0) { BEGIN(INITIAL); }
 574                         ub_c_lval.str = strdup(ub_c_text); return STRING_ARG; }
 575
 576 {UNQUOTEDLETTER_NOCOLON}*       {
 577         ub_c_error_msg("unknown keyword '%s'", ub_c_text);
 578         }
 579
 580 <*>.    {
 581         ub_c_error_msg("stray '%s'", ub_c_text);
 582         }
 583
 584 %%