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 #include <ctype.h>
  13 #include <string.h>
  14 #include <strings.h>
  15 #ifdef HAVE_GLOB_H
  16 # include <glob.h>
  17 #endif
  18
  19 #include "util/config_file.h"
  20 #include "configparser.h"
  21 void ub_c_error(const char *message);
  22
  23 #if 0
  24 #define LEXOUT(s)  printf s /* used ONLY when debugging */
  25 #else
  26 #define LEXOUT(s)
  27 #endif
  28
  29 /** avoid warning in about fwrite return value */
  30 #define ECHO ub_c_error_msg("syntax error at text: %s", ub_c_text)
  31
  32 /** A parser variable, this is a statement in the config file which is
  33  * of the form variable: value1 value2 ...  nargs is the number of values. */
  34 #define YDVAR(nargs, var) \
  35         num_args=(nargs); \
  36         LEXOUT(("v(%s%d) ", ub_c_text, num_args)); \
  37         if(num_args > 0) { BEGIN(val); } \
  38         return (var);
  39
  40 struct inc_state {
  41         char* filename;
  42         int line;
  43         YY_BUFFER_STATE buffer;
  44         struct inc_state* next;
  45 };
  46 static struct inc_state* config_include_stack = NULL;
  47 static int inc_depth = 0;
  48 static int inc_prev = 0;
  49 static int num_args = 0;
  50
  51 void init_cfg_parse(void)
  52 {
  53         config_include_stack = NULL;
  54         inc_depth = 0;
  55         inc_prev = 0;
  56         num_args = 0;
  57 }
  58
  59 static void config_start_include(const char* filename)
  60 {
  61         FILE *input;
  62         struct inc_state* s;
  63         char* nm;
  64         if(inc_depth++ > 100000) {
  65                 ub_c_error_msg("too many include files");
  66                 return;
  67         }
  68         if(strlen(filename) == 0) {
  69                 ub_c_error_msg("empty include file name");
  70                 return;
  71         }
  72         s = (struct inc_state*)malloc(sizeof(*s));
  73         if(!s) {
  74                 ub_c_error_msg("include %s: malloc failure", filename);
  75                 return;
  76         }
  77         if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
  78                 strlen(cfg_parser->chroot)) == 0) {
  79                 filename += strlen(cfg_parser->chroot);
  80         }
  81         nm = strdup(filename);
  82         if(!nm) {
  83                 ub_c_error_msg("include %s: strdup failure", filename);
  84                 free(s);
  85                 return;
  86         }
  87         input = fopen(filename, "r");
  88         if(!input) {
  89                 ub_c_error_msg("cannot open include file '%s': %s",
  90                         filename, strerror(errno));
  91                 free(s);
  92                 free(nm);
  93                 return;
  94         }
  95         LEXOUT(("switch_to_include_file(%s)\n", filename));
  96         s->filename = cfg_parser->filename;
  97         s->line = cfg_parser->line;
  98         s->buffer = YY_CURRENT_BUFFER;
  99         s->next = config_include_stack;
 100         config_include_stack = s;
 101         cfg_parser->filename = nm;
 102         cfg_parser->line = 1;
 103         yy_switch_to_buffer(yy_create_buffer(input, YY_BUF_SIZE));
 104 }
 105
 106 static void config_start_include_glob(const char* filename)
 107 {
 108
 109         /* check for wildcards */
 110 #ifdef HAVE_GLOB
 111         glob_t g;
 112         size_t i;
 113         int r, flags;
 114         if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') &&
 115                 !strchr(filename, '{') && !strchr(filename, '~'))) {
 116                 flags = 0
 117 #ifdef GLOB_ERR
 118                         | GLOB_ERR
 119 #endif
 120 #ifdef GLOB_NOSORT
 121                         | GLOB_NOSORT
 122 #endif
 123 #ifdef GLOB_BRACE
 124                         | GLOB_BRACE
 125 #endif
 126 #ifdef GLOB_TILDE
 127                         | GLOB_TILDE
 128 #endif
 129                 ;
 130                 memset(&g, 0, sizeof(g));
 131                 if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
 132                         strlen(cfg_parser->chroot)) == 0) {
 133                         filename += strlen(cfg_parser->chroot);
 134                 }
 135                 r = glob(filename, flags, NULL, &g);
 136                 if(r) {
 137                         /* some error */
 138                         globfree(&g);
 139                         if(r == GLOB_NOMATCH)
 140                                 return; /* no matches for pattern */
 141                         config_start_include(filename); /* let original deal with it */
 142                         return;
 143                 }
 144                 /* process files found, if any */
 145                 for(i=0; i<(size_t)g.gl_pathc; i++) {
 146                         config_start_include(g.gl_pathv[i]);
 147                 }
 148                 globfree(&g);
 149                 return;
 150         }
 151 #endif /* HAVE_GLOB */
 152
 153         config_start_include(filename);
 154 }
 155
 156 static void config_end_include(void)
 157 {
 158         struct inc_state* s = config_include_stack;
 159         --inc_depth;
 160         if(!s) return;
 161         free(cfg_parser->filename);
 162         cfg_parser->filename = s->filename;
 163         cfg_parser->line = s->line;
 164         yy_delete_buffer(YY_CURRENT_BUFFER);
 165         yy_switch_to_buffer(s->buffer);
 166         config_include_stack = s->next;
 167         free(s);
 168 }
 169
 170 #ifndef yy_set_bol /* compat definition, for flex 2.4.6 */
 171 #define yy_set_bol(at_bol) \
 172         { \
 173                 if ( ! yy_current_buffer ) \
 174                         yy_current_buffer = yy_create_buffer( ub_c_in, YY_BUF_SIZE ); \
 175                 yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \
 176         }
 177 #endif
 178
 179 %}
 180 %option noinput
 181 %option nounput
 182 %{
 183 #ifndef YY_NO_UNPUT
 184 #define YY_NO_UNPUT 1
 185 #endif
 186 #ifndef YY_NO_INPUT
 187 #define YY_NO_INPUT 1
 188 #endif
 189 %}
 190
 191 SPACE   [ \t]
 192 LETTER  [a-zA-Z]
 193 UNQUOTEDLETTER [^\'\"\n\r \t\\]|\\.
 194 UNQUOTEDLETTER_NOCOLON [^\:\'\"\n\r \t\\]|\\.
 195 NEWLINE [\r\n]
 196 COMMENT \#
 197 COLON   \:
 198 DQANY     [^\"\n\r\\]|\\.
 199 SQANY     [^\'\n\r\\]|\\.
 200
 201 %x      quotedstring singlequotedstr include include_quoted val
 202
 203 %%
 204 <INITIAL,val>{SPACE}*   {
 205         LEXOUT(("SP ")); /* ignore */ }
 206 <INITIAL,val>{SPACE}*{COMMENT}.*        {
 207         /* note that flex makes the longest match and '.' is any but not nl */
 208         LEXOUT(("comment(%s) ", ub_c_text)); /* ignore */ }
 209 server{COLON}                   { YDVAR(0, VAR_SERVER) }
 210 qname-minimisation{COLON}       { YDVAR(1, VAR_QNAME_MINIMISATION) }
 211 num-threads{COLON}              { YDVAR(1, VAR_NUM_THREADS) }
 212 verbosity{COLON}                { YDVAR(1, VAR_VERBOSITY) }
 213 port{COLON}                     { YDVAR(1, VAR_PORT) }
 214 outgoing-range{COLON}           { YDVAR(1, VAR_OUTGOING_RANGE) }
 215 outgoing-port-permit{COLON}     { YDVAR(1, VAR_OUTGOING_PORT_PERMIT) }
 216 outgoing-port-avoid{COLON}      { YDVAR(1, VAR_OUTGOING_PORT_AVOID) }
 217 outgoing-num-tcp{COLON}         { YDVAR(1, VAR_OUTGOING_NUM_TCP) }
 218 incoming-num-tcp{COLON}         { YDVAR(1, VAR_INCOMING_NUM_TCP) }
 219 do-ip4{COLON}                   { YDVAR(1, VAR_DO_IP4) }
 220 do-ip6{COLON}                   { YDVAR(1, VAR_DO_IP6) }
 221 do-udp{COLON}                   { YDVAR(1, VAR_DO_UDP) }
 222 do-tcp{COLON}                   { YDVAR(1, VAR_DO_TCP) }
 223 tcp-upstream{COLON}             { YDVAR(1, VAR_TCP_UPSTREAM) }
 224 ssl-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 225 ssl-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 226 ssl-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 227 ssl-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 228 do-daemonize{COLON}             { YDVAR(1, VAR_DO_DAEMONIZE) }
 229 interface{COLON}                { YDVAR(1, VAR_INTERFACE) }
 230 ip-address{COLON}               { YDVAR(1, VAR_INTERFACE) }
 231 outgoing-interface{COLON}       { YDVAR(1, VAR_OUTGOING_INTERFACE) }
 232 interface-automatic{COLON}      { YDVAR(1, VAR_INTERFACE_AUTOMATIC) }
 233 so-rcvbuf{COLON}                { YDVAR(1, VAR_SO_RCVBUF) }
 234 so-sndbuf{COLON}                { YDVAR(1, VAR_SO_SNDBUF) }
 235 so-reuseport{COLON}             { YDVAR(1, VAR_SO_REUSEPORT) }
 236 ip-transparent{COLON}           { YDVAR(1, VAR_IP_TRANSPARENT) }
 237 chroot{COLON}                   { YDVAR(1, VAR_CHROOT) }
 238 username{COLON}                 { YDVAR(1, VAR_USERNAME) }
 239 directory{COLON}                { YDVAR(1, VAR_DIRECTORY) }
 240 logfile{COLON}                  { YDVAR(1, VAR_LOGFILE) }
 241 pidfile{COLON}                  { YDVAR(1, VAR_PIDFILE) }
 242 root-hints{COLON}               { YDVAR(1, VAR_ROOT_HINTS) }
 243 edns-buffer-size{COLON}         { YDVAR(1, VAR_EDNS_BUFFER_SIZE) }
 244 msg-buffer-size{COLON}          { YDVAR(1, VAR_MSG_BUFFER_SIZE) }
 245 msg-cache-size{COLON}           { YDVAR(1, VAR_MSG_CACHE_SIZE) }
 246 msg-cache-slabs{COLON}          { YDVAR(1, VAR_MSG_CACHE_SLABS) }
 247 rrset-cache-size{COLON}         { YDVAR(1, VAR_RRSET_CACHE_SIZE) }
 248 rrset-cache-slabs{COLON}        { YDVAR(1, VAR_RRSET_CACHE_SLABS) }
 249 cache-max-ttl{COLON}            { YDVAR(1, VAR_CACHE_MAX_TTL) }
 250 cache-max-negative-ttl{COLON}   { YDVAR(1, VAR_CACHE_MAX_NEGATIVE_TTL) }
 251 cache-min-ttl{COLON}            { YDVAR(1, VAR_CACHE_MIN_TTL) }
 252 infra-host-ttl{COLON}           { YDVAR(1, VAR_INFRA_HOST_TTL) }
 253 infra-lame-ttl{COLON}           { YDVAR(1, VAR_INFRA_LAME_TTL) }
 254 infra-cache-slabs{COLON}        { YDVAR(1, VAR_INFRA_CACHE_SLABS) }
 255 infra-cache-numhosts{COLON}     { YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) }
 256 infra-cache-lame-size{COLON}    { YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) }
 257 infra-cache-min-rtt{COLON}      { YDVAR(1, VAR_INFRA_CACHE_MIN_RTT) }
 258 num-queries-per-thread{COLON}   { YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) }
 259 jostle-timeout{COLON}           { YDVAR(1, VAR_JOSTLE_TIMEOUT) }
 260 delay-close{COLON}              { YDVAR(1, VAR_DELAY_CLOSE) }
 261 target-fetch-policy{COLON}      { YDVAR(1, VAR_TARGET_FETCH_POLICY) }
 262 harden-short-bufsize{COLON}     { YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) }
 263 harden-large-queries{COLON}     { YDVAR(1, VAR_HARDEN_LARGE_QUERIES) }
 264 harden-glue{COLON}              { YDVAR(1, VAR_HARDEN_GLUE) }
 265 harden-dnssec-stripped{COLON}   { YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) }
 266 harden-below-nxdomain{COLON}    { YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) }
 267 harden-referral-path{COLON}     { YDVAR(1, VAR_HARDEN_REFERRAL_PATH) }
 268 harden-algo-downgrade{COLON}    { YDVAR(1, VAR_HARDEN_ALGO_DOWNGRADE) }
 269 use-caps-for-id{COLON}          { YDVAR(1, VAR_USE_CAPS_FOR_ID) }
 270 caps-whitelist{COLON}           { YDVAR(1, VAR_CAPS_WHITELIST) }
 271 unwanted-reply-threshold{COLON} { YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) }
 272 private-address{COLON}          { YDVAR(1, VAR_PRIVATE_ADDRESS) }
 273 private-domain{COLON}           { YDVAR(1, VAR_PRIVATE_DOMAIN) }
 274 prefetch-key{COLON}             { YDVAR(1, VAR_PREFETCH_KEY) }
 275 prefetch{COLON}                 { YDVAR(1, VAR_PREFETCH) }
 276 stub-zone{COLON}                { YDVAR(0, VAR_STUB_ZONE) }
 277 name{COLON}                     { YDVAR(1, VAR_NAME) }
 278 stub-addr{COLON}                { YDVAR(1, VAR_STUB_ADDR) }
 279 stub-host{COLON}                { YDVAR(1, VAR_STUB_HOST) }
 280 stub-prime{COLON}               { YDVAR(1, VAR_STUB_PRIME) }
 281 stub-first{COLON}               { YDVAR(1, VAR_STUB_FIRST) }
 282 forward-zone{COLON}             { YDVAR(0, VAR_FORWARD_ZONE) }
 283 forward-addr{COLON}             { YDVAR(1, VAR_FORWARD_ADDR) }
 284 forward-host{COLON}             { YDVAR(1, VAR_FORWARD_HOST) }
 285 forward-first{COLON}            { YDVAR(1, VAR_FORWARD_FIRST) }
 286 do-not-query-address{COLON}     { YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) }
 287 do-not-query-localhost{COLON}   { YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) }
 288 access-control{COLON}           { YDVAR(2, VAR_ACCESS_CONTROL) }
 289 hide-identity{COLON}            { YDVAR(1, VAR_HIDE_IDENTITY) }
 290 hide-version{COLON}             { YDVAR(1, VAR_HIDE_VERSION) }
 291 identity{COLON}                 { YDVAR(1, VAR_IDENTITY) }
 292 version{COLON}                  { YDVAR(1, VAR_VERSION) }
 293 module-config{COLON}            { YDVAR(1, VAR_MODULE_CONF) }
 294 dlv-anchor{COLON}               { YDVAR(1, VAR_DLV_ANCHOR) }
 295 dlv-anchor-file{COLON}          { YDVAR(1, VAR_DLV_ANCHOR_FILE) }
 296 trust-anchor-file{COLON}        { YDVAR(1, VAR_TRUST_ANCHOR_FILE) }
 297 auto-trust-anchor-file{COLON}   { YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) }
 298 trusted-keys-file{COLON}        { YDVAR(1, VAR_TRUSTED_KEYS_FILE) }
 299 trust-anchor{COLON}             { YDVAR(1, VAR_TRUST_ANCHOR) }
 300 val-override-date{COLON}        { YDVAR(1, VAR_VAL_OVERRIDE_DATE) }
 301 val-sig-skew-min{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MIN) }
 302 val-sig-skew-max{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MAX) }
 303 val-bogus-ttl{COLON}            { YDVAR(1, VAR_BOGUS_TTL) }
 304 val-clean-additional{COLON}     { YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) }
 305 val-permissive-mode{COLON}      { YDVAR(1, VAR_VAL_PERMISSIVE_MODE) }
 306 ignore-cd-flag{COLON}           { YDVAR(1, VAR_IGNORE_CD_FLAG) }
 307 val-log-level{COLON}            { YDVAR(1, VAR_VAL_LOG_LEVEL) }
 308 key-cache-size{COLON}           { YDVAR(1, VAR_KEY_CACHE_SIZE) }
 309 key-cache-slabs{COLON}          { YDVAR(1, VAR_KEY_CACHE_SLABS) }
 310 neg-cache-size{COLON}           { YDVAR(1, VAR_NEG_CACHE_SIZE) }
 311 val-nsec3-keysize-iterations{COLON}     {
 312                                   YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) }
 313 add-holddown{COLON}             { YDVAR(1, VAR_ADD_HOLDDOWN) }
 314 del-holddown{COLON}             { YDVAR(1, VAR_DEL_HOLDDOWN) }
 315 keep-missing{COLON}             { YDVAR(1, VAR_KEEP_MISSING) }
 316 permit-small-holddown{COLON}    { YDVAR(1, VAR_PERMIT_SMALL_HOLDDOWN) }
 317 use-syslog{COLON}               { YDVAR(1, VAR_USE_SYSLOG) }
 318 log-time-ascii{COLON}           { YDVAR(1, VAR_LOG_TIME_ASCII) }
 319 log-queries{COLON}              { YDVAR(1, VAR_LOG_QUERIES) }
 320 local-zone{COLON}               { YDVAR(2, VAR_LOCAL_ZONE) }
 321 local-data{COLON}               { YDVAR(1, VAR_LOCAL_DATA) }
 322 local-data-ptr{COLON}           { YDVAR(1, VAR_LOCAL_DATA_PTR) }
 323 unblock-lan-zones{COLON}        { YDVAR(1, VAR_UNBLOCK_LAN_ZONES) }
 324 statistics-interval{COLON}      { YDVAR(1, VAR_STATISTICS_INTERVAL) }
 325 statistics-cumulative{COLON}    { YDVAR(1, VAR_STATISTICS_CUMULATIVE) }
 326 extended-statistics{COLON}      { YDVAR(1, VAR_EXTENDED_STATISTICS) }
 327 remote-control{COLON}           { YDVAR(0, VAR_REMOTE_CONTROL) }
 328 control-enable{COLON}           { YDVAR(1, VAR_CONTROL_ENABLE) }
 329 control-interface{COLON}        { YDVAR(1, VAR_CONTROL_INTERFACE) }
 330 control-port{COLON}             { YDVAR(1, VAR_CONTROL_PORT) }
 331 control-use-cert{COLON}         { YDVAR(1, VAR_CONTROL_USE_CERT) }
 332 server-key-file{COLON}          { YDVAR(1, VAR_SERVER_KEY_FILE) }
 333 server-cert-file{COLON}         { YDVAR(1, VAR_SERVER_CERT_FILE) }
 334 control-key-file{COLON}         { YDVAR(1, VAR_CONTROL_KEY_FILE) }
 335 control-cert-file{COLON}        { YDVAR(1, VAR_CONTROL_CERT_FILE) }
 336 python-script{COLON}            { YDVAR(1, VAR_PYTHON_SCRIPT) }
 337 python{COLON}                   { YDVAR(0, VAR_PYTHON) }
 338 domain-insecure{COLON}          { YDVAR(1, VAR_DOMAIN_INSECURE) }
 339 minimal-responses{COLON}        { YDVAR(1, VAR_MINIMAL_RESPONSES) }
 340 rrset-roundrobin{COLON}         { YDVAR(1, VAR_RRSET_ROUNDROBIN) }
 341 max-udp-size{COLON}             { YDVAR(1, VAR_MAX_UDP_SIZE) }
 342 dns64-prefix{COLON}             { YDVAR(1, VAR_DNS64_PREFIX) }
 343 dns64-synthall{COLON}           { YDVAR(1, VAR_DNS64_SYNTHALL) }
 344 dnstap{COLON}                   { YDVAR(0, VAR_DNSTAP) }
 345 dnstap-enable{COLON}            { YDVAR(1, VAR_DNSTAP_ENABLE) }
 346 dnstap-socket-path{COLON}       { YDVAR(1, VAR_DNSTAP_SOCKET_PATH) }
 347 dnstap-send-identity{COLON}     { YDVAR(1, VAR_DNSTAP_SEND_IDENTITY) }
 348 dnstap-send-version{COLON}      { YDVAR(1, VAR_DNSTAP_SEND_VERSION) }
 349 dnstap-identity{COLON}          { YDVAR(1, VAR_DNSTAP_IDENTITY) }
 350 dnstap-version{COLON}           { YDVAR(1, VAR_DNSTAP_VERSION) }
 351 dnstap-log-resolver-query-messages{COLON}       {
 352                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES) }
 353 dnstap-log-resolver-response-messages{COLON}    {
 354                 YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES) }
 355 dnstap-log-client-query-messages{COLON}         {
 356                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES) }
 357 dnstap-log-client-response-messages{COLON}      {
 358                 YDVAR(1, VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES) }
 359 dnstap-log-forwarder-query-messages{COLON}      {
 360                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES) }
 361 dnstap-log-forwarder-response-messages{COLON}   {
 362                 YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) }
 363 ratelimit{COLON}                { YDVAR(1, VAR_RATELIMIT) }
 364 ratelimit-slabs{COLON}          { YDVAR(1, VAR_RATELIMIT_SLABS) }
 365 ratelimit-size{COLON}           { YDVAR(1, VAR_RATELIMIT_SIZE) }
 366 ratelimit-for-domain{COLON}     { YDVAR(2, VAR_RATELIMIT_FOR_DOMAIN) }
 367 ratelimit-below-domain{COLON}   { YDVAR(2, VAR_RATELIMIT_BELOW_DOMAIN) }
 368 ratelimit-factor{COLON}         { YDVAR(1, VAR_RATELIMIT_FACTOR) }
 369 <INITIAL,val>{NEWLINE}          { LEXOUT(("NL\n")); cfg_parser->line++; }
 370
 371         /* Quoted strings. Strip leading and ending quotes */
 372 <val>\"                 { BEGIN(quotedstring); LEXOUT(("QS ")); }
 373 <quotedstring><<EOF>>   {
 374         ub_c_error("EOF inside quoted string");
 375         if(--num_args == 0) { BEGIN(INITIAL); }
 376         else                { BEGIN(val); }
 377 }
 378 <quotedstring>{DQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 379 <quotedstring>{NEWLINE} { ub_c_error("newline inside quoted string, no end \"");
 380                           cfg_parser->line++; BEGIN(INITIAL); }
 381 <quotedstring>\" {
 382         LEXOUT(("QE "));
 383         if(--num_args == 0) { BEGIN(INITIAL); }
 384         else                { BEGIN(val); }
 385         ub_c_text[ub_c_leng - 1] = '\0';
 386         ub_c_lval.str = strdup(ub_c_text);
 387         if(!ub_c_lval.str)
 388                 ub_c_error("out of memory");
 389         return STRING_ARG;
 390 }
 391
 392         /* Single Quoted strings. Strip leading and ending quotes */
 393 <val>\'                 { BEGIN(singlequotedstr); LEXOUT(("SQS ")); }
 394 <singlequotedstr><<EOF>>   {
 395         ub_c_error("EOF inside quoted string");
 396         if(--num_args == 0) { BEGIN(INITIAL); }
 397         else                { BEGIN(val); }
 398 }
 399 <singlequotedstr>{SQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 400 <singlequotedstr>{NEWLINE} { ub_c_error("newline inside quoted string, no end '");
 401                              cfg_parser->line++; BEGIN(INITIAL); }
 402 <singlequotedstr>\' {
 403         LEXOUT(("SQE "));
 404         if(--num_args == 0) { BEGIN(INITIAL); }
 405         else                { BEGIN(val); }
 406         ub_c_text[ub_c_leng - 1] = '\0';
 407         ub_c_lval.str = strdup(ub_c_text);
 408         if(!ub_c_lval.str)
 409                 ub_c_error("out of memory");
 410         return STRING_ARG;
 411 }
 412
 413         /* include: directive */
 414 <INITIAL,val>include{COLON}     {
 415         LEXOUT(("v(%s) ", ub_c_text)); inc_prev = YYSTATE; BEGIN(include); }
 416 <include><<EOF>>        {
 417         ub_c_error("EOF inside include directive");
 418         BEGIN(inc_prev);
 419 }
 420 <include>{SPACE}*       { LEXOUT(("ISP ")); /* ignore */ }
 421 <include>{NEWLINE}      { LEXOUT(("NL\n")); cfg_parser->line++;}
 422 <include>\"             { LEXOUT(("IQS ")); BEGIN(include_quoted); }
 423 <include>{UNQUOTEDLETTER}*      {
 424         LEXOUT(("Iunquotedstr(%s) ", ub_c_text));
 425         config_start_include_glob(ub_c_text);
 426         BEGIN(inc_prev);
 427 }
 428 <include_quoted><<EOF>> {
 429         ub_c_error("EOF inside quoted string");
 430         BEGIN(inc_prev);
 431 }
 432 <include_quoted>{DQANY}*        { LEXOUT(("ISTR(%s) ", ub_c_text)); yymore(); }
 433 <include_quoted>{NEWLINE}       { ub_c_error("newline before \" in include name");
 434                                   cfg_parser->line++; BEGIN(inc_prev); }
 435 <include_quoted>\"      {
 436         LEXOUT(("IQE "));
 437         ub_c_text[ub_c_leng - 1] = '\0';
 438         config_start_include_glob(ub_c_text);
 439         BEGIN(inc_prev);
 440 }
 441 <INITIAL,val><<EOF>>    {
 442         LEXOUT(("LEXEOF "));
 443         yy_set_bol(1); /* Set beginning of line, so "^" rules match.  */
 444         if (!config_include_stack) {
 445                 yyterminate();
 446         } else {
 447                 fclose(ub_c_in);
 448                 config_end_include();
 449         }
 450 }
 451
 452 <val>{UNQUOTEDLETTER}*  { LEXOUT(("unquotedstr(%s) ", ub_c_text));
 453                         if(--num_args == 0) { BEGIN(INITIAL); }
 454                         ub_c_lval.str = strdup(ub_c_text); return STRING_ARG; }
 455
 456 {UNQUOTEDLETTER_NOCOLON}*       {
 457         ub_c_error_msg("unknown keyword '%s'", ub_c_text);
 458         }
 459
 460 <*>.    {
 461         ub_c_error_msg("stray '%s'", ub_c_text);
 462         }
 463
 464 %%