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         int inc_toplevel;
  50 };
  51 static struct inc_state* config_include_stack = NULL;
  52 static int inc_depth = 0;
  53 static int inc_prev = 0;
  54 static int num_args = 0;
  55 static int inc_toplevel = 0;
  56
  57 void init_cfg_parse(void)
  58 {
  59         config_include_stack = NULL;
  60         inc_depth = 0;
  61         inc_prev = 0;
  62         num_args = 0;
  63         inc_toplevel = 0;
  64 }
  65
  66 static void config_start_include(const char* filename, int toplevel)
  67 {
  68         FILE *input;
  69         struct inc_state* s;
  70         char* nm;
  71         if(inc_depth+1 > 100000) {
  72                 ub_c_error_msg("too many include files");
  73                 return;
  74         }
  75         if(*filename == '\0') {
  76                 ub_c_error_msg("empty include file name");
  77                 return;
  78         }
  79         s = (struct inc_state*)malloc(sizeof(*s));
  80         if(!s) {
  81                 ub_c_error_msg("include %s: malloc failure", filename);
  82                 return;
  83         }
  84         if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
  85                 strlen(cfg_parser->chroot)) == 0) {
  86                 filename += strlen(cfg_parser->chroot);
  87         }
  88         nm = strdup(filename);
  89         if(!nm) {
  90                 ub_c_error_msg("include %s: strdup failure", filename);
  91                 free(s);
  92                 return;
  93         }
  94         input = fopen(filename, "r");
  95         if(!input) {
  96                 ub_c_error_msg("cannot open include file '%s': %s",
  97                         filename, strerror(errno));
  98                 free(s);
  99                 free(nm);
 100                 return;
 101         }
 102         LEXOUT(("switch_to_include_file(%s)\n", filename));
 103         inc_depth++;
 104         s->filename = cfg_parser->filename;
 105         s->line = cfg_parser->line;
 106         s->buffer = YY_CURRENT_BUFFER;
 107         s->inc_toplevel = inc_toplevel;
 108         s->next = config_include_stack;
 109         config_include_stack = s;
 110         cfg_parser->filename = nm;
 111         cfg_parser->line = 1;
 112         inc_toplevel = toplevel;
 113         yy_switch_to_buffer(yy_create_buffer(input, YY_BUF_SIZE));
 114 }
 115
 116 static void config_start_include_glob(const char* filename, int toplevel)
 117 {
 118
 119         /* check for wildcards */
 120 #ifdef HAVE_GLOB
 121         glob_t g;
 122         int i, r, flags;
 123         if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') &&
 124                 !strchr(filename, '{') && !strchr(filename, '~'))) {
 125                 flags = 0
 126 #ifdef GLOB_ERR
 127                         | GLOB_ERR
 128 #endif
 129                          /* do not set GLOB_NOSORT so the results are sorted
 130                             and in a predictable order. */
 131 #ifdef GLOB_BRACE
 132                         | GLOB_BRACE
 133 #endif
 134 #ifdef GLOB_TILDE
 135                         | GLOB_TILDE
 136 #endif
 137                 ;
 138                 memset(&g, 0, sizeof(g));
 139                 if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
 140                         strlen(cfg_parser->chroot)) == 0) {
 141                         filename += strlen(cfg_parser->chroot);
 142                 }
 143                 r = glob(filename, flags, NULL, &g);
 144                 if(r) {
 145                         /* some error */
 146                         globfree(&g);
 147                         if(r == GLOB_NOMATCH)
 148                                 return; /* no matches for pattern */
 149                         config_start_include(filename, toplevel); /* let original deal with it */
 150                         return;
 151                 }
 152                 /* process files found, if any */
 153                 for(i=(int)g.gl_pathc-1; i>=0; i--) {
 154                         config_start_include(g.gl_pathv[i], toplevel);
 155                 }
 156                 globfree(&g);
 157                 return;
 158         }
 159 #endif /* HAVE_GLOB */
 160
 161         config_start_include(filename, toplevel);
 162 }
 163
 164 static void config_end_include(void)
 165 {
 166         struct inc_state* s = config_include_stack;
 167         --inc_depth;
 168         if(!s) return;
 169         free(cfg_parser->filename);
 170         cfg_parser->filename = s->filename;
 171         cfg_parser->line = s->line;
 172         yy_delete_buffer(YY_CURRENT_BUFFER);
 173         yy_switch_to_buffer(s->buffer);
 174         config_include_stack = s->next;
 175         inc_toplevel = s->inc_toplevel;
 176         free(s);
 177 }
 178
 179 #ifndef yy_set_bol /* compat definition, for flex 2.4.6 */
 180 #define yy_set_bol(at_bol) \
 181         { \
 182                 if ( ! yy_current_buffer ) \
 183                         yy_current_buffer = yy_create_buffer( ub_c_in, YY_BUF_SIZE ); \
 184                 yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \
 185         }
 186 #endif
 187
 188 %}
 189 %option noinput
 190 %option nounput
 191 %{
 192 #ifndef YY_NO_UNPUT
 193 #define YY_NO_UNPUT 1
 194 #endif
 195 #ifndef YY_NO_INPUT
 196 #define YY_NO_INPUT 1
 197 #endif
 198 %}
 199
 200 SPACE   [ \t]
 201 LETTER  [a-zA-Z]
 202 UNQUOTEDLETTER [^\'\"\n\r \t\\]|\\.
 203 UNQUOTEDLETTER_NOCOLON [^\:\'\"\n\r \t\\]|\\.
 204 NEWLINE [\r\n]
 205 COMMENT \#
 206 COLON   \:
 207 DQANY     [^\"\n\r\\]|\\.
 208 SQANY     [^\'\n\r\\]|\\.
 209
 210 %x      quotedstring singlequotedstr include include_quoted val include_toplevel include_toplevel_quoted
 211
 212 %%
 213 <INITIAL,val>{SPACE}*   {
 214         LEXOUT(("SP ")); /* ignore */ }
 215 <INITIAL,val>{SPACE}*{COMMENT}.*        {
 216         /* note that flex makes the longest match and '.' is any but not nl */
 217         LEXOUT(("comment(%s) ", ub_c_text)); /* ignore */ }
 218 server{COLON}                   { YDVAR(0, VAR_SERVER) }
 219 qname-minimisation{COLON}       { YDVAR(1, VAR_QNAME_MINIMISATION) }
 220 qname-minimisation-strict{COLON} { YDVAR(1, VAR_QNAME_MINIMISATION_STRICT) }
 221 num-threads{COLON}              { YDVAR(1, VAR_NUM_THREADS) }
 222 verbosity{COLON}                { YDVAR(1, VAR_VERBOSITY) }
 223 port{COLON}                     { YDVAR(1, VAR_PORT) }
 224 outgoing-range{COLON}           { YDVAR(1, VAR_OUTGOING_RANGE) }
 225 outgoing-port-permit{COLON}     { YDVAR(1, VAR_OUTGOING_PORT_PERMIT) }
 226 outgoing-port-avoid{COLON}      { YDVAR(1, VAR_OUTGOING_PORT_AVOID) }
 227 outgoing-num-tcp{COLON}         { YDVAR(1, VAR_OUTGOING_NUM_TCP) }
 228 incoming-num-tcp{COLON}         { YDVAR(1, VAR_INCOMING_NUM_TCP) }
 229 do-ip4{COLON}                   { YDVAR(1, VAR_DO_IP4) }
 230 do-ip6{COLON}                   { YDVAR(1, VAR_DO_IP6) }
 231 prefer-ip4{COLON}               { YDVAR(1, VAR_PREFER_IP4) }
 232 prefer-ip6{COLON}               { YDVAR(1, VAR_PREFER_IP6) }
 233 do-udp{COLON}                   { YDVAR(1, VAR_DO_UDP) }
 234 do-tcp{COLON}                   { YDVAR(1, VAR_DO_TCP) }
 235 tcp-upstream{COLON}             { YDVAR(1, VAR_TCP_UPSTREAM) }
 236 tcp-mss{COLON}                  { YDVAR(1, VAR_TCP_MSS) }
 237 outgoing-tcp-mss{COLON}         { YDVAR(1, VAR_OUTGOING_TCP_MSS) }
 238 tcp-idle-timeout{COLON}         { YDVAR(1, VAR_TCP_IDLE_TIMEOUT) }
 239 edns-tcp-keepalive{COLON}       { YDVAR(1, VAR_EDNS_TCP_KEEPALIVE) }
 240 edns-tcp-keepalive-timeout{COLON} { YDVAR(1, VAR_EDNS_TCP_KEEPALIVE_TIMEOUT) }
 241 ssl-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 242 tls-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 243 ssl-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 244 tls-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 245 ssl-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 246 tls-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 247 ssl-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 248 tls-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 249 ssl-cert-bundle{COLON}          { YDVAR(1, VAR_TLS_CERT_BUNDLE) }
 250 tls-cert-bundle{COLON}          { YDVAR(1, VAR_TLS_CERT_BUNDLE) }
 251 tls-win-cert{COLON}             { YDVAR(1, VAR_TLS_WIN_CERT) }
 252 additional-ssl-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 253 additional-tls-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 254 tls-additional-ports{COLON}     { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 255 tls-additional-port{COLON}      { YDVAR(1, VAR_TLS_ADDITIONAL_PORT) }
 256 tls-session-ticket-keys{COLON}  { YDVAR(1, VAR_TLS_SESSION_TICKET_KEYS) }
 257 tls-ciphers{COLON}              { YDVAR(1, VAR_TLS_CIPHERS) }
 258 tls-ciphersuites{COLON}         { YDVAR(1, VAR_TLS_CIPHERSUITES) }
 259 tls-use-sni{COLON}              { YDVAR(1, VAR_TLS_USE_SNI) }
 260 https-port{COLON}               { YDVAR(1, VAR_HTTPS_PORT) }
 261 http-endpoint{COLON}            { YDVAR(1, VAR_HTTP_ENDPOINT) }
 262 http-max-streams{COLON}         { YDVAR(1, VAR_HTTP_MAX_STREAMS) }
 263 http-query-buffer-size{COLON}   { YDVAR(1, VAR_HTTP_QUERY_BUFFER_SIZE) }
 264 http-response-buffer-size{COLON} { YDVAR(1, VAR_HTTP_RESPONSE_BUFFER_SIZE) }
 265 http-nodelay{COLON}             { YDVAR(1, VAR_HTTP_NODELAY) }
 266 http-notls-downstream{COLON}    { YDVAR(1, VAR_HTTP_NOTLS_DOWNSTREAM) }
 267 use-systemd{COLON}              { YDVAR(1, VAR_USE_SYSTEMD) }
 268 do-daemonize{COLON}             { YDVAR(1, VAR_DO_DAEMONIZE) }
 269 interface{COLON}                { YDVAR(1, VAR_INTERFACE) }
 270 ip-address{COLON}               { YDVAR(1, VAR_INTERFACE) }
 271 outgoing-interface{COLON}       { YDVAR(1, VAR_OUTGOING_INTERFACE) }
 272 interface-automatic{COLON}      { YDVAR(1, VAR_INTERFACE_AUTOMATIC) }
 273 so-rcvbuf{COLON}                { YDVAR(1, VAR_SO_RCVBUF) }
 274 so-sndbuf{COLON}                { YDVAR(1, VAR_SO_SNDBUF) }
 275 so-reuseport{COLON}             { YDVAR(1, VAR_SO_REUSEPORT) }
 276 ip-transparent{COLON}           { YDVAR(1, VAR_IP_TRANSPARENT) }
 277 ip-freebind{COLON}              { YDVAR(1, VAR_IP_FREEBIND) }
 278 ip-dscp{COLON}          { YDVAR(1, VAR_IP_DSCP) }
 279 chroot{COLON}                   { YDVAR(1, VAR_CHROOT) }
 280 username{COLON}                 { YDVAR(1, VAR_USERNAME) }
 281 directory{COLON}                { YDVAR(1, VAR_DIRECTORY) }
 282 logfile{COLON}                  { YDVAR(1, VAR_LOGFILE) }
 283 pidfile{COLON}                  { YDVAR(1, VAR_PIDFILE) }
 284 root-hints{COLON}               { YDVAR(1, VAR_ROOT_HINTS) }
 285 stream-wait-size{COLON}         { YDVAR(1, VAR_STREAM_WAIT_SIZE) }
 286 edns-buffer-size{COLON}         { YDVAR(1, VAR_EDNS_BUFFER_SIZE) }
 287 msg-buffer-size{COLON}          { YDVAR(1, VAR_MSG_BUFFER_SIZE) }
 288 msg-cache-size{COLON}           { YDVAR(1, VAR_MSG_CACHE_SIZE) }
 289 msg-cache-slabs{COLON}          { YDVAR(1, VAR_MSG_CACHE_SLABS) }
 290 rrset-cache-size{COLON}         { YDVAR(1, VAR_RRSET_CACHE_SIZE) }
 291 rrset-cache-slabs{COLON}        { YDVAR(1, VAR_RRSET_CACHE_SLABS) }
 292 cache-max-ttl{COLON}            { YDVAR(1, VAR_CACHE_MAX_TTL) }
 293 cache-max-negative-ttl{COLON}   { YDVAR(1, VAR_CACHE_MAX_NEGATIVE_TTL) }
 294 cache-min-ttl{COLON}            { YDVAR(1, VAR_CACHE_MIN_TTL) }
 295 infra-host-ttl{COLON}           { YDVAR(1, VAR_INFRA_HOST_TTL) }
 296 infra-lame-ttl{COLON}           { YDVAR(1, VAR_INFRA_LAME_TTL) }
 297 infra-cache-slabs{COLON}        { YDVAR(1, VAR_INFRA_CACHE_SLABS) }
 298 infra-cache-numhosts{COLON}     { YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) }
 299 infra-cache-lame-size{COLON}    { YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) }
 300 infra-cache-min-rtt{COLON}      { YDVAR(1, VAR_INFRA_CACHE_MIN_RTT) }
 301 infra-keep-probing{COLON}       { YDVAR(1, VAR_INFRA_KEEP_PROBING) }
 302 num-queries-per-thread{COLON}   { YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) }
 303 jostle-timeout{COLON}           { YDVAR(1, VAR_JOSTLE_TIMEOUT) }
 304 delay-close{COLON}              { YDVAR(1, VAR_DELAY_CLOSE) }
 305 udp-connect{COLON}              { YDVAR(1, VAR_UDP_CONNECT) }
 306 target-fetch-policy{COLON}      { YDVAR(1, VAR_TARGET_FETCH_POLICY) }
 307 harden-short-bufsize{COLON}     { YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) }
 308 harden-large-queries{COLON}     { YDVAR(1, VAR_HARDEN_LARGE_QUERIES) }
 309 harden-glue{COLON}              { YDVAR(1, VAR_HARDEN_GLUE) }
 310 harden-dnssec-stripped{COLON}   { YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) }
 311 harden-below-nxdomain{COLON}    { YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) }
 312 harden-referral-path{COLON}     { YDVAR(1, VAR_HARDEN_REFERRAL_PATH) }
 313 harden-algo-downgrade{COLON}    { YDVAR(1, VAR_HARDEN_ALGO_DOWNGRADE) }
 314 use-caps-for-id{COLON}          { YDVAR(1, VAR_USE_CAPS_FOR_ID) }
 315 caps-whitelist{COLON}           { YDVAR(1, VAR_CAPS_WHITELIST) }
 316 caps-exempt{COLON}              { YDVAR(1, VAR_CAPS_WHITELIST) }
 317 unwanted-reply-threshold{COLON} { YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) }
 318 private-address{COLON}          { YDVAR(1, VAR_PRIVATE_ADDRESS) }
 319 private-domain{COLON}           { YDVAR(1, VAR_PRIVATE_DOMAIN) }
 320 prefetch-key{COLON}             { YDVAR(1, VAR_PREFETCH_KEY) }
 321 prefetch{COLON}                 { YDVAR(1, VAR_PREFETCH) }
 322 deny-any{COLON}                 { YDVAR(1, VAR_DENY_ANY) }
 323 stub-zone{COLON}                { YDVAR(0, VAR_STUB_ZONE) }
 324 name{COLON}                     { YDVAR(1, VAR_NAME) }
 325 stub-addr{COLON}                { YDVAR(1, VAR_STUB_ADDR) }
 326 stub-host{COLON}                { YDVAR(1, VAR_STUB_HOST) }
 327 stub-prime{COLON}               { YDVAR(1, VAR_STUB_PRIME) }
 328 stub-first{COLON}               { YDVAR(1, VAR_STUB_FIRST) }
 329 stub-no-cache{COLON}            { YDVAR(1, VAR_STUB_NO_CACHE) }
 330 stub-ssl-upstream{COLON}        { YDVAR(1, VAR_STUB_SSL_UPSTREAM) }
 331 stub-tls-upstream{COLON}        { YDVAR(1, VAR_STUB_SSL_UPSTREAM) }
 332 forward-zone{COLON}             { YDVAR(0, VAR_FORWARD_ZONE) }
 333 forward-addr{COLON}             { YDVAR(1, VAR_FORWARD_ADDR) }
 334 forward-host{COLON}             { YDVAR(1, VAR_FORWARD_HOST) }
 335 forward-first{COLON}            { YDVAR(1, VAR_FORWARD_FIRST) }
 336 forward-no-cache{COLON}         { YDVAR(1, VAR_FORWARD_NO_CACHE) }
 337 forward-ssl-upstream{COLON}     { YDVAR(1, VAR_FORWARD_SSL_UPSTREAM) }
 338 forward-tls-upstream{COLON}     { YDVAR(1, VAR_FORWARD_SSL_UPSTREAM) }
 339 auth-zone{COLON}                { YDVAR(0, VAR_AUTH_ZONE) }
 340 rpz{COLON}                      { YDVAR(0, VAR_RPZ) }
 341 tags{COLON}                     { YDVAR(1, VAR_TAGS) }
 342 rpz-action-override{COLON}      { YDVAR(1, VAR_RPZ_ACTION_OVERRIDE) }
 343 rpz-cname-override{COLON}       { YDVAR(1, VAR_RPZ_CNAME_OVERRIDE) }
 344 rpz-log{COLON}                  { YDVAR(1, VAR_RPZ_LOG) }
 345 rpz-log-name{COLON}             { YDVAR(1, VAR_RPZ_LOG_NAME) }
 346 zonefile{COLON}                 { YDVAR(1, VAR_ZONEFILE) }
 347 master{COLON}                   { YDVAR(1, VAR_MASTER) }
 348 primary{COLON}                  { YDVAR(1, VAR_MASTER) }
 349 url{COLON}                      { YDVAR(1, VAR_URL) }
 350 allow-notify{COLON}             { YDVAR(1, VAR_ALLOW_NOTIFY) }
 351 for-downstream{COLON}           { YDVAR(1, VAR_FOR_DOWNSTREAM) }
 352 for-upstream{COLON}             { YDVAR(1, VAR_FOR_UPSTREAM) }
 353 fallback-enabled{COLON}         { YDVAR(1, VAR_FALLBACK_ENABLED) }
 354 view{COLON}                     { YDVAR(0, VAR_VIEW) }
 355 view-first{COLON}               { YDVAR(1, VAR_VIEW_FIRST) }
 356 do-not-query-address{COLON}     { YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) }
 357 do-not-query-localhost{COLON}   { YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) }
 358 access-control{COLON}           { YDVAR(2, VAR_ACCESS_CONTROL) }
 359 send-client-subnet{COLON}       { YDVAR(1, VAR_SEND_CLIENT_SUBNET) }
 360 client-subnet-zone{COLON}       { YDVAR(1, VAR_CLIENT_SUBNET_ZONE) }
 361 client-subnet-always-forward{COLON} { YDVAR(1, VAR_CLIENT_SUBNET_ALWAYS_FORWARD) }
 362 client-subnet-opcode{COLON}     { YDVAR(1, VAR_CLIENT_SUBNET_OPCODE) }
 363 max-client-subnet-ipv4{COLON}   { YDVAR(1, VAR_MAX_CLIENT_SUBNET_IPV4) }
 364 max-client-subnet-ipv6{COLON}   { YDVAR(1, VAR_MAX_CLIENT_SUBNET_IPV6) }
 365 min-client-subnet-ipv4{COLON}   { YDVAR(1, VAR_MIN_CLIENT_SUBNET_IPV4) }
 366 min-client-subnet-ipv6{COLON}   { YDVAR(1, VAR_MIN_CLIENT_SUBNET_IPV6) }
 367 max-ecs-tree-size-ipv4{COLON}   { YDVAR(1, VAR_MAX_ECS_TREE_SIZE_IPV4) }
 368 max-ecs-tree-size-ipv6{COLON}   { YDVAR(1, VAR_MAX_ECS_TREE_SIZE_IPV6) }
 369 hide-identity{COLON}            { YDVAR(1, VAR_HIDE_IDENTITY) }
 370 hide-version{COLON}             { YDVAR(1, VAR_HIDE_VERSION) }
 371 hide-trustanchor{COLON}         { YDVAR(1, VAR_HIDE_TRUSTANCHOR) }
 372 identity{COLON}                 { YDVAR(1, VAR_IDENTITY) }
 373 version{COLON}                  { YDVAR(1, VAR_VERSION) }
 374 module-config{COLON}            { YDVAR(1, VAR_MODULE_CONF) }
 375 dlv-anchor{COLON}               { YDVAR(1, VAR_DLV_ANCHOR) }
 376 dlv-anchor-file{COLON}          { YDVAR(1, VAR_DLV_ANCHOR_FILE) }
 377 trust-anchor-file{COLON}        { YDVAR(1, VAR_TRUST_ANCHOR_FILE) }
 378 auto-trust-anchor-file{COLON}   { YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) }
 379 trusted-keys-file{COLON}        { YDVAR(1, VAR_TRUSTED_KEYS_FILE) }
 380 trust-anchor{COLON}             { YDVAR(1, VAR_TRUST_ANCHOR) }
 381 trust-anchor-signaling{COLON}   { YDVAR(1, VAR_TRUST_ANCHOR_SIGNALING) }
 382 root-key-sentinel{COLON}        { YDVAR(1, VAR_ROOT_KEY_SENTINEL) }
 383 val-override-date{COLON}        { YDVAR(1, VAR_VAL_OVERRIDE_DATE) }
 384 val-sig-skew-min{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MIN) }
 385 val-sig-skew-max{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MAX) }
 386 val-bogus-ttl{COLON}            { YDVAR(1, VAR_BOGUS_TTL) }
 387 val-clean-additional{COLON}     { YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) }
 388 val-permissive-mode{COLON}      { YDVAR(1, VAR_VAL_PERMISSIVE_MODE) }
 389 aggressive-nsec{COLON}          { YDVAR(1, VAR_AGGRESSIVE_NSEC) }
 390 ignore-cd-flag{COLON}           { YDVAR(1, VAR_IGNORE_CD_FLAG) }
 391 serve-expired{COLON}            { YDVAR(1, VAR_SERVE_EXPIRED) }
 392 serve-expired-ttl{COLON}        { YDVAR(1, VAR_SERVE_EXPIRED_TTL) }
 393 serve-expired-ttl-reset{COLON}  { YDVAR(1, VAR_SERVE_EXPIRED_TTL_RESET) }
 394 serve-expired-reply-ttl{COLON}  { YDVAR(1, VAR_SERVE_EXPIRED_REPLY_TTL) }
 395 serve-expired-client-timeout{COLON}     { YDVAR(1, VAR_SERVE_EXPIRED_CLIENT_TIMEOUT) }
 396 fake-dsa{COLON}                 { YDVAR(1, VAR_FAKE_DSA) }
 397 fake-sha1{COLON}                { YDVAR(1, VAR_FAKE_SHA1) }
 398 val-log-level{COLON}            { YDVAR(1, VAR_VAL_LOG_LEVEL) }
 399 key-cache-size{COLON}           { YDVAR(1, VAR_KEY_CACHE_SIZE) }
 400 key-cache-slabs{COLON}          { YDVAR(1, VAR_KEY_CACHE_SLABS) }
 401 neg-cache-size{COLON}           { YDVAR(1, VAR_NEG_CACHE_SIZE) }
 402 val-nsec3-keysize-iterations{COLON}     {
 403                                   YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) }
 404 add-holddown{COLON}             { YDVAR(1, VAR_ADD_HOLDDOWN) }
 405 del-holddown{COLON}             { YDVAR(1, VAR_DEL_HOLDDOWN) }
 406 keep-missing{COLON}             { YDVAR(1, VAR_KEEP_MISSING) }
 407 permit-small-holddown{COLON}    { YDVAR(1, VAR_PERMIT_SMALL_HOLDDOWN) }
 408 use-syslog{COLON}               { YDVAR(1, VAR_USE_SYSLOG) }
 409 log-identity{COLON}             { YDVAR(1, VAR_LOG_IDENTITY) }
 410 log-time-ascii{COLON}           { YDVAR(1, VAR_LOG_TIME_ASCII) }
 411 log-queries{COLON}              { YDVAR(1, VAR_LOG_QUERIES) }
 412 log-replies{COLON}              { YDVAR(1, VAR_LOG_REPLIES) }
 413 log-tag-queryreply{COLON}       { YDVAR(1, VAR_LOG_TAG_QUERYREPLY) }
 414 log-local-actions{COLON}       { YDVAR(1, VAR_LOG_LOCAL_ACTIONS) }
 415 log-servfail{COLON}             { YDVAR(1, VAR_LOG_SERVFAIL) }
 416 local-zone{COLON}               { YDVAR(2, VAR_LOCAL_ZONE) }
 417 local-data{COLON}               { YDVAR(1, VAR_LOCAL_DATA) }
 418 local-data-ptr{COLON}           { YDVAR(1, VAR_LOCAL_DATA_PTR) }
 419 unblock-lan-zones{COLON}        { YDVAR(1, VAR_UNBLOCK_LAN_ZONES) }
 420 insecure-lan-zones{COLON}       { YDVAR(1, VAR_INSECURE_LAN_ZONES) }
 421 statistics-interval{COLON}      { YDVAR(1, VAR_STATISTICS_INTERVAL) }
 422 statistics-cumulative{COLON}    { YDVAR(1, VAR_STATISTICS_CUMULATIVE) }
 423 extended-statistics{COLON}      { YDVAR(1, VAR_EXTENDED_STATISTICS) }
 424 shm-enable{COLON}               { YDVAR(1, VAR_SHM_ENABLE) }
 425 shm-key{COLON}                  { YDVAR(1, VAR_SHM_KEY) }
 426 remote-control{COLON}           { YDVAR(0, VAR_REMOTE_CONTROL) }
 427 control-enable{COLON}           { YDVAR(1, VAR_CONTROL_ENABLE) }
 428 control-interface{COLON}        { YDVAR(1, VAR_CONTROL_INTERFACE) }
 429 control-port{COLON}             { YDVAR(1, VAR_CONTROL_PORT) }
 430 control-use-cert{COLON}         { YDVAR(1, VAR_CONTROL_USE_CERT) }
 431 server-key-file{COLON}          { YDVAR(1, VAR_SERVER_KEY_FILE) }
 432 server-cert-file{COLON}         { YDVAR(1, VAR_SERVER_CERT_FILE) }
 433 control-key-file{COLON}         { YDVAR(1, VAR_CONTROL_KEY_FILE) }
 434 control-cert-file{COLON}        { YDVAR(1, VAR_CONTROL_CERT_FILE) }
 435 python-script{COLON}            { YDVAR(1, VAR_PYTHON_SCRIPT) }
 436 python{COLON}                   { YDVAR(0, VAR_PYTHON) }
 437 dynlib-file{COLON}              { YDVAR(1, VAR_DYNLIB_FILE) }
 438 dynlib{COLON}                   { YDVAR(0, VAR_DYNLIB) }
 439 domain-insecure{COLON}          { YDVAR(1, VAR_DOMAIN_INSECURE) }
 440 minimal-responses{COLON}        { YDVAR(1, VAR_MINIMAL_RESPONSES) }
 441 rrset-roundrobin{COLON}         { YDVAR(1, VAR_RRSET_ROUNDROBIN) }
 442 unknown-server-time-limit{COLON} { YDVAR(1, VAR_UNKNOWN_SERVER_TIME_LIMIT) }
 443 max-udp-size{COLON}             { YDVAR(1, VAR_MAX_UDP_SIZE) }
 444 dns64-prefix{COLON}             { YDVAR(1, VAR_DNS64_PREFIX) }
 445 dns64-synthall{COLON}           { YDVAR(1, VAR_DNS64_SYNTHALL) }
 446 dns64-ignore-aaaa{COLON}        { YDVAR(1, VAR_DNS64_IGNORE_AAAA) }
 447 define-tag{COLON}               { YDVAR(1, VAR_DEFINE_TAG) }
 448 local-zone-tag{COLON}           { YDVAR(2, VAR_LOCAL_ZONE_TAG) }
 449 access-control-tag{COLON}       { YDVAR(2, VAR_ACCESS_CONTROL_TAG) }
 450 access-control-tag-action{COLON} { YDVAR(3, VAR_ACCESS_CONTROL_TAG_ACTION) }
 451 access-control-tag-data{COLON}  { YDVAR(3, VAR_ACCESS_CONTROL_TAG_DATA) }
 452 access-control-view{COLON}      { YDVAR(2, VAR_ACCESS_CONTROL_VIEW) }
 453 local-zone-override{COLON}      { YDVAR(3, VAR_LOCAL_ZONE_OVERRIDE) }
 454 dnstap{COLON}                   { YDVAR(0, VAR_DNSTAP) }
 455 dnstap-enable{COLON}            { YDVAR(1, VAR_DNSTAP_ENABLE) }
 456 dnstap-bidirectional{COLON}     { YDVAR(1, VAR_DNSTAP_BIDIRECTIONAL) }
 457 dnstap-socket-path{COLON}       { YDVAR(1, VAR_DNSTAP_SOCKET_PATH) }
 458 dnstap-ip{COLON}                { YDVAR(1, VAR_DNSTAP_IP) }
 459 dnstap-tls{COLON}               { YDVAR(1, VAR_DNSTAP_TLS) }
 460 dnstap-tls-server-name{COLON}   { YDVAR(1, VAR_DNSTAP_TLS_SERVER_NAME) }
 461 dnstap-tls-cert-bundle{COLON}   { YDVAR(1, VAR_DNSTAP_TLS_CERT_BUNDLE) }
 462 dnstap-tls-client-key-file{COLON}       {
 463                 YDVAR(1, VAR_DNSTAP_TLS_CLIENT_KEY_FILE) }
 464 dnstap-tls-client-cert-file{COLON}      {
 465                 YDVAR(1, VAR_DNSTAP_TLS_CLIENT_CERT_FILE) }
 466 dnstap-send-identity{COLON}     { YDVAR(1, VAR_DNSTAP_SEND_IDENTITY) }
 467 dnstap-send-version{COLON}      { YDVAR(1, VAR_DNSTAP_SEND_VERSION) }
 468 dnstap-identity{COLON}          { YDVAR(1, VAR_DNSTAP_IDENTITY) }
 469 dnstap-version{COLON}           { YDVAR(1, VAR_DNSTAP_VERSION) }
 470 dnstap-log-resolver-query-messages{COLON}       {
 471                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES) }
 472 dnstap-log-resolver-response-messages{COLON}    {
 473                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES) }
 474 dnstap-log-client-query-messages{COLON}         {
 475                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES) }
 476 dnstap-log-client-response-messages{COLON}      {
 477                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES) }
 478 dnstap-log-forwarder-query-messages{COLON}      {
 479                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES) }
 480 dnstap-log-forwarder-response-messages{COLON}   {
 481                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) }
 482 disable-dnssec-lame-check{COLON} { YDVAR(1, VAR_DISABLE_DNSSEC_LAME_CHECK) }
 483 ip-ratelimit{COLON}             { YDVAR(1, VAR_IP_RATELIMIT) }
 484 ratelimit{COLON}                { YDVAR(1, VAR_RATELIMIT) }
 485 ip-ratelimit-slabs{COLON}               { YDVAR(1, VAR_IP_RATELIMIT_SLABS) }
 486 ratelimit-slabs{COLON}          { YDVAR(1, VAR_RATELIMIT_SLABS) }
 487 ip-ratelimit-size{COLON}                { YDVAR(1, VAR_IP_RATELIMIT_SIZE) }
 488 ratelimit-size{COLON}           { YDVAR(1, VAR_RATELIMIT_SIZE) }
 489 ratelimit-for-domain{COLON}     { YDVAR(2, VAR_RATELIMIT_FOR_DOMAIN) }
 490 ratelimit-below-domain{COLON}   { YDVAR(2, VAR_RATELIMIT_BELOW_DOMAIN) }
 491 ip-ratelimit-factor{COLON}              { YDVAR(1, VAR_IP_RATELIMIT_FACTOR) }
 492 ratelimit-factor{COLON}         { YDVAR(1, VAR_RATELIMIT_FACTOR) }
 493 low-rtt{COLON}                  { YDVAR(1, VAR_LOW_RTT) }
 494 fast-server-num{COLON}          { YDVAR(1, VAR_FAST_SERVER_NUM) }
 495 low-rtt-pct{COLON}              { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 496 low-rtt-permil{COLON}           { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 497 fast-server-permil{COLON}       { YDVAR(1, VAR_FAST_SERVER_PERMIL) }
 498 response-ip-tag{COLON}          { YDVAR(2, VAR_RESPONSE_IP_TAG) }
 499 response-ip{COLON}              { YDVAR(2, VAR_RESPONSE_IP) }
 500 response-ip-data{COLON}         { YDVAR(2, VAR_RESPONSE_IP_DATA) }
 501 dnscrypt{COLON}                 { YDVAR(0, VAR_DNSCRYPT) }
 502 dnscrypt-enable{COLON}          { YDVAR(1, VAR_DNSCRYPT_ENABLE) }
 503 dnscrypt-port{COLON}            { YDVAR(1, VAR_DNSCRYPT_PORT) }
 504 dnscrypt-provider{COLON}        { YDVAR(1, VAR_DNSCRYPT_PROVIDER) }
 505 dnscrypt-secret-key{COLON}      { YDVAR(1, VAR_DNSCRYPT_SECRET_KEY) }
 506 dnscrypt-provider-cert{COLON}   { YDVAR(1, VAR_DNSCRYPT_PROVIDER_CERT) }
 507 dnscrypt-provider-cert-rotated{COLON}   { YDVAR(1, VAR_DNSCRYPT_PROVIDER_CERT_ROTATED) }
 508 dnscrypt-shared-secret-cache-size{COLON}        {
 509                 YDVAR(1, VAR_DNSCRYPT_SHARED_SECRET_CACHE_SIZE) }
 510 dnscrypt-shared-secret-cache-slabs{COLON}       {
 511                 YDVAR(1, VAR_DNSCRYPT_SHARED_SECRET_CACHE_SLABS) }
 512 dnscrypt-nonce-cache-size{COLON}        { YDVAR(1, VAR_DNSCRYPT_NONCE_CACHE_SIZE) }
 513 dnscrypt-nonce-cache-slabs{COLON}       { YDVAR(1, VAR_DNSCRYPT_NONCE_CACHE_SLABS) }
 514 ipsecmod-enabled{COLON}         { YDVAR(1, VAR_IPSECMOD_ENABLED) }
 515 ipsecmod-ignore-bogus{COLON}    { YDVAR(1, VAR_IPSECMOD_IGNORE_BOGUS) }
 516 ipsecmod-hook{COLON}            { YDVAR(1, VAR_IPSECMOD_HOOK) }
 517 ipsecmod-max-ttl{COLON}         { YDVAR(1, VAR_IPSECMOD_MAX_TTL) }
 518 ipsecmod-whitelist{COLON}       { YDVAR(1, VAR_IPSECMOD_WHITELIST) }
 519 ipsecmod-allow{COLON}           { YDVAR(1, VAR_IPSECMOD_WHITELIST) }
 520 ipsecmod-strict{COLON}          { YDVAR(1, VAR_IPSECMOD_STRICT) }
 521 cachedb{COLON}                  { YDVAR(0, VAR_CACHEDB) }
 522 backend{COLON}                  { YDVAR(1, VAR_CACHEDB_BACKEND) }
 523 secret-seed{COLON}              { YDVAR(1, VAR_CACHEDB_SECRETSEED) }
 524 redis-server-host{COLON}        { YDVAR(1, VAR_CACHEDB_REDISHOST) }
 525 redis-server-port{COLON}        { YDVAR(1, VAR_CACHEDB_REDISPORT) }
 526 redis-timeout{COLON}            { YDVAR(1, VAR_CACHEDB_REDISTIMEOUT) }
 527 redis-expire-records{COLON}     { YDVAR(1, VAR_CACHEDB_REDISEXPIRERECORDS) }
 528 ipset{COLON}                    { YDVAR(0, VAR_IPSET) }
 529 name-v4{COLON}                  { YDVAR(1, VAR_IPSET_NAME_V4) }
 530 name-v6{COLON}                  { YDVAR(1, VAR_IPSET_NAME_V6) }
 531 udp-upstream-without-downstream{COLON} { YDVAR(1, VAR_UDP_UPSTREAM_WITHOUT_DOWNSTREAM) }
 532 tcp-connection-limit{COLON}     { YDVAR(2, VAR_TCP_CONNECTION_LIMIT) }
 533 edns-client-string{COLON}       { YDVAR(2, VAR_EDNS_CLIENT_STRING) }
 534 edns-client-string-opcode{COLON} { YDVAR(1, VAR_EDNS_CLIENT_STRING_OPCODE) }
 535 <INITIAL,val>{NEWLINE}          { LEXOUT(("NL\n")); cfg_parser->line++; }
 536
 537         /* Quoted strings. Strip leading and ending quotes */
 538 <val>\"                 { BEGIN(quotedstring); LEXOUT(("QS ")); }
 539 <quotedstring><<EOF>>   {
 540         ub_c_error("EOF inside quoted string");
 541         if(--num_args == 0) { BEGIN(INITIAL); }
 542         else                { BEGIN(val); }
 543 }
 544 <quotedstring>{DQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 545 <quotedstring>{NEWLINE} { ub_c_error("newline inside quoted string, no end \"");
 546                           cfg_parser->line++; BEGIN(INITIAL); }
 547 <quotedstring>\" {
 548         LEXOUT(("QE "));
 549         if(--num_args == 0) { BEGIN(INITIAL); }
 550         else                { BEGIN(val); }
 551         ub_c_text[ub_c_leng - 1] = '\0';
 552         ub_c_lval.str = strdup(ub_c_text);
 553         if(!ub_c_lval.str)
 554                 ub_c_error("out of memory");
 555         return STRING_ARG;
 556 }
 557
 558         /* Single Quoted strings. Strip leading and ending quotes */
 559 <val>\'                 { BEGIN(singlequotedstr); LEXOUT(("SQS ")); }
 560 <singlequotedstr><<EOF>>   {
 561         ub_c_error("EOF inside quoted string");
 562         if(--num_args == 0) { BEGIN(INITIAL); }
 563         else                { BEGIN(val); }
 564 }
 565 <singlequotedstr>{SQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 566 <singlequotedstr>{NEWLINE} { ub_c_error("newline inside quoted string, no end '");
 567                              cfg_parser->line++; BEGIN(INITIAL); }
 568 <singlequotedstr>\' {
 569         LEXOUT(("SQE "));
 570         if(--num_args == 0) { BEGIN(INITIAL); }
 571         else                { BEGIN(val); }
 572         ub_c_text[ub_c_leng - 1] = '\0';
 573         ub_c_lval.str = strdup(ub_c_text);
 574         if(!ub_c_lval.str)
 575                 ub_c_error("out of memory");
 576         return STRING_ARG;
 577 }
 578
 579         /* include: directive */
 580 <INITIAL,val>include{COLON}     {
 581         LEXOUT(("v(%s) ", ub_c_text)); inc_prev = YYSTATE; BEGIN(include); }
 582 <include><<EOF>>        {
 583         ub_c_error("EOF inside include directive");
 584         BEGIN(inc_prev);
 585 }
 586 <include>{SPACE}*       { LEXOUT(("ISP ")); /* ignore */ }
 587 <include>{NEWLINE}      { LEXOUT(("NL\n")); cfg_parser->line++;}
 588 <include>\"             { LEXOUT(("IQS ")); BEGIN(include_quoted); }
 589 <include>{UNQUOTEDLETTER}*      {
 590         LEXOUT(("Iunquotedstr(%s) ", ub_c_text));
 591         config_start_include_glob(ub_c_text, 0);
 592         BEGIN(inc_prev);
 593 }
 594 <include_quoted><<EOF>> {
 595         ub_c_error("EOF inside quoted string");
 596         BEGIN(inc_prev);
 597 }
 598 <include_quoted>{DQANY}*        { LEXOUT(("ISTR(%s) ", ub_c_text)); yymore(); }
 599 <include_quoted>{NEWLINE}       { ub_c_error("newline before \" in include name");
 600                                   cfg_parser->line++; BEGIN(inc_prev); }
 601 <include_quoted>\"      {
 602         LEXOUT(("IQE "));
 603         ub_c_text[ub_c_leng - 1] = '\0';
 604         config_start_include_glob(ub_c_text,0);
 605         BEGIN(inc_prev);
 606 }
 607 <INITIAL,val><<EOF>>    {
 608         LEXOUT(("LEXEOF "));
 609         yy_set_bol(1); /* Set beginning of line, so "^" rules match.  */
 610         if (!config_include_stack) {
 611                 yyterminate();
 612         } else {
 613                 fclose(yyin);
 614                 int prev_toplevel = inc_toplevel;
 615                 fclose(ub_c_in);
 616                 config_end_include();
 617                 if(prev_toplevel) return (VAR_FORCE_TOPLEVEL);
 618         }
 619 }
 620
 621         /* include-toplevel: directive */
 622 <INITIAL,val>include-toplevel{COLON} {
 623         LEXOUT(("v(%s) ", ub_c_text)); inc_prev = YYSTATE; BEGIN(include_toplevel);
 624 }
 625 <include_toplevel><<EOF>> {
 626         ub_c_error("EOF inside include_toplevel directive");
 627         BEGIN(inc_prev);
 628 }
 629 <include_toplevel>{SPACE}* { LEXOUT(("ITSP ")); /* ignore */ }
 630 <include_toplevel>{NEWLINE} { LEXOUT(("NL\n")); cfg_parser->line++; }
 631 <include_toplevel>\" { LEXOUT(("ITQS ")); BEGIN(include_toplevel_quoted); }
 632 <include_toplevel>{UNQUOTEDLETTER}* {
 633         LEXOUT(("ITunquotedstr(%s) ", ub_c_text));
 634         config_start_include_glob(ub_c_text, 1);
 635         BEGIN(inc_prev);
 636         return (VAR_FORCE_TOPLEVEL);
 637 }
 638 <include_toplevel_quoted><<EOF>> {
 639         ub_c_error("EOF inside quoted string");
 640         BEGIN(inc_prev);
 641 }
 642 <include_toplevel_quoted>{DQANY}* { LEXOUT(("ITSTR(%s) ", ub_c_text)); yymore(); }
 643 <include_toplevel_quoted>{NEWLINE} {
 644         ub_c_error("newline before \" in include name");
 645         cfg_parser->line++; BEGIN(inc_prev);
 646 }
 647 <include_toplevel_quoted>\" {
 648         LEXOUT(("ITQE "));
 649         ub_c_text[yyleng - 1] = '\0';
 650         config_start_include_glob(ub_c_text, 1);
 651         BEGIN(inc_prev);
 652         return (VAR_FORCE_TOPLEVEL);
 653 }
 654
 655 <val>{UNQUOTEDLETTER}*  { LEXOUT(("unquotedstr(%s) ", ub_c_text));
 656                         if(--num_args == 0) { BEGIN(INITIAL); }
 657                         ub_c_lval.str = strdup(ub_c_text); return STRING_ARG; }
 658
 659 {UNQUOTEDLETTER_NOCOLON}*       {
 660         ub_c_error_msg("unknown keyword '%s'", ub_c_text);
 661         }
 662
 663 <*>.    {
 664         ub_c_error_msg("stray '%s'", ub_c_text);
 665         }
 666
 667 %%