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
  11 #include "config.h"
  12
  13 #include <ctype.h>
  14 #include <string.h>
  15 #include <strings.h>
  16 #ifdef HAVE_GLOB_H
  17 # include <glob.h>
  18 #endif
  19
  20 #include "util/config_file.h"
  21 #include "configparser.h"
  22 void ub_c_error(const char *message);
  23
  24 #if 0
  25 #define LEXOUT(s)  printf s /* used ONLY when debugging */
  26 #else
  27 #define LEXOUT(s)
  28 #endif
  29
  30 /** avoid warning in about fwrite return value */
  31 #define ECHO ub_c_error_msg("syntax error at text: %s", ub_c_text)
  32
  33 /** A parser variable, this is a statement in the config file which is
  34  * of the form variable: value1 value2 ...  nargs is the number of values. */
  35 #define YDVAR(nargs, var) \
  36         num_args=(nargs); \
  37         LEXOUT(("v(%s%d) ", ub_c_text, num_args)); \
  38         if(num_args > 0) { BEGIN(val); } \
  39         return (var);
  40
  41 struct inc_state {
  42         char* filename;
  43         int line;
  44         YY_BUFFER_STATE buffer;
  45         struct inc_state* next;
  46 };
  47 static struct inc_state* config_include_stack = NULL;
  48 static int inc_depth = 0;
  49 static int inc_prev = 0;
  50 static int num_args = 0;
  51
  52 void init_cfg_parse(void)
  53 {
  54         config_include_stack = NULL;
  55         inc_depth = 0;
  56         inc_prev = 0;
  57         num_args = 0;
  58 }
  59
  60 static void config_start_include(const char* filename)
  61 {
  62         FILE *input;
  63         struct inc_state* s;
  64         char* nm;
  65         if(inc_depth++ > 100000) {
  66                 ub_c_error_msg("too many include files");
  67                 return;
  68         }
  69         if(strlen(filename) == 0) {
  70                 ub_c_error_msg("empty include file name");
  71                 return;
  72         }
  73         s = (struct inc_state*)malloc(sizeof(*s));
  74         if(!s) {
  75                 ub_c_error_msg("include %s: malloc failure", filename);
  76                 return;
  77         }
  78         if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot,
  79                 strlen(cfg_parser->chroot)) == 0) {
  80                 filename += strlen(cfg_parser->chroot);
  81         }
  82         nm = strdup(filename);
  83         if(!nm) {
  84                 ub_c_error_msg("include %s: strdup failure", filename);
  85                 free(s);
  86                 return;
  87         }
  88         input = fopen(filename, "r");
  89         if(!input) {
  90                 ub_c_error_msg("cannot open include file '%s': %s",
  91                         filename, strerror(errno));
  92                 free(s);
  93                 free(nm);
  94                 return;
  95         }
  96         LEXOUT(("switch_to_include_file(%s)\n", filename));
  97         s->filename = cfg_parser->filename;
  98         s->line = cfg_parser->line;
  99         s->buffer = YY_CURRENT_BUFFER;
 100         s->next = config_include_stack;
 101         config_include_stack = s;
 102         cfg_parser->filename = nm;
 103         cfg_parser->line = 1;
 104         yy_switch_to_buffer(yy_create_buffer(input, YY_BUF_SIZE));
 105 }
 106
 107 static void config_start_include_glob(const char* filename)
 108 {
 109
 110         /* check for wildcards */
 111 #ifdef HAVE_GLOB
 112         glob_t g;
 113         size_t i;
 114         int r, flags;
 115         if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') &&
 116                 !strchr(filename, '{') && !strchr(filename, '~'))) {
 117                 flags = 0
 118 #ifdef GLOB_ERR
 119                         | GLOB_ERR
 120 #endif
 121 #ifdef GLOB_NOSORT
 122                         | GLOB_NOSORT
 123 #endif
 124 #ifdef GLOB_BRACE
 125                         | GLOB_BRACE
 126 #endif
 127 #ifdef GLOB_TILDE
 128                         | GLOB_TILDE
 129 #endif
 130                 ;
 131                 memset(&g, 0, sizeof(g));
 132                 r = glob(filename, flags, NULL, &g);
 133                 if(r) {
 134                         /* some error */
 135                         globfree(&g);
 136                         if(r == GLOB_NOMATCH)
 137                                 return; /* no matches for pattern */
 138                         config_start_include(filename); /* let original deal with it */
 139                         return;
 140                 }
 141                 /* process files found, if any */
 142                 for(i=0; i<(size_t)g.gl_pathc; i++) {
 143                         config_start_include(g.gl_pathv[i]);
 144                 }
 145                 globfree(&g);
 146                 return;
 147         }
 148 #endif /* HAVE_GLOB */
 149
 150         config_start_include(filename);
 151 }
 152
 153 static void config_end_include(void)
 154 {
 155         struct inc_state* s = config_include_stack;
 156         --inc_depth;
 157         if(!s) return;
 158         free(cfg_parser->filename);
 159         cfg_parser->filename = s->filename;
 160         cfg_parser->line = s->line;
 161         yy_delete_buffer(YY_CURRENT_BUFFER);
 162         yy_switch_to_buffer(s->buffer);
 163         config_include_stack = s->next;
 164         free(s);
 165 }
 166
 167 #ifndef yy_set_bol /* compat definition, for flex 2.4.6 */
 168 #define yy_set_bol(at_bol) \
 169         { \
 170                 if ( ! yy_current_buffer ) \
 171                         yy_current_buffer = yy_create_buffer( ub_c_in, YY_BUF_SIZE ); \
 172                 yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \
 173         }
 174 #endif
 175
 176 %}
 177 %option noinput
 178 %option nounput
 179 %{
 180 #ifndef YY_NO_UNPUT
 181 #define YY_NO_UNPUT 1
 182 #endif
 183 #ifndef YY_NO_INPUT
 184 #define YY_NO_INPUT 1
 185 #endif
 186 %}
 187
 188 SPACE   [ \t]
 189 LETTER  [a-zA-Z]
 190 UNQUOTEDLETTER [^\'\"\n\r \t\\]|\\.
 191 UNQUOTEDLETTER_NOCOLON [^\:\'\"\n\r \t\\]|\\.
 192 NEWLINE [\r\n]
 193 COMMENT \#
 194 COLON   \:
 195 DQANY     [^\"\n\r\\]|\\.
 196 SQANY     [^\'\n\r\\]|\\.
 197
 198 %x      quotedstring singlequotedstr include include_quoted val
 199
 200 %%
 201 <INITIAL,val>{SPACE}*   {
 202         LEXOUT(("SP ")); /* ignore */ }
 203 <INITIAL,val>{SPACE}*{COMMENT}.*        {
 204         /* note that flex makes the longest match and '.' is any but not nl */
 205         LEXOUT(("comment(%s) ", ub_c_text)); /* ignore */ }
 206 server{COLON}                   { YDVAR(0, VAR_SERVER) }
 207 num-threads{COLON}              { YDVAR(1, VAR_NUM_THREADS) }
 208 verbosity{COLON}                { YDVAR(1, VAR_VERBOSITY) }
 209 port{COLON}                     { YDVAR(1, VAR_PORT) }
 210 outgoing-range{COLON}           { YDVAR(1, VAR_OUTGOING_RANGE) }
 211 outgoing-port-permit{COLON}     { YDVAR(1, VAR_OUTGOING_PORT_PERMIT) }
 212 outgoing-port-avoid{COLON}      { YDVAR(1, VAR_OUTGOING_PORT_AVOID) }
 213 outgoing-num-tcp{COLON}         { YDVAR(1, VAR_OUTGOING_NUM_TCP) }
 214 incoming-num-tcp{COLON}         { YDVAR(1, VAR_INCOMING_NUM_TCP) }
 215 do-ip4{COLON}                   { YDVAR(1, VAR_DO_IP4) }
 216 do-ip6{COLON}                   { YDVAR(1, VAR_DO_IP6) }
 217 do-udp{COLON}                   { YDVAR(1, VAR_DO_UDP) }
 218 do-tcp{COLON}                   { YDVAR(1, VAR_DO_TCP) }
 219 tcp-upstream{COLON}             { YDVAR(1, VAR_TCP_UPSTREAM) }
 220 ssl-upstream{COLON}             { YDVAR(1, VAR_SSL_UPSTREAM) }
 221 ssl-service-key{COLON}          { YDVAR(1, VAR_SSL_SERVICE_KEY) }
 222 ssl-service-pem{COLON}          { YDVAR(1, VAR_SSL_SERVICE_PEM) }
 223 ssl-port{COLON}                 { YDVAR(1, VAR_SSL_PORT) }
 224 do-daemonize{COLON}             { YDVAR(1, VAR_DO_DAEMONIZE) }
 225 interface{COLON}                { YDVAR(1, VAR_INTERFACE) }
 226 ip-address{COLON}               { YDVAR(1, VAR_INTERFACE) }
 227 outgoing-interface{COLON}       { YDVAR(1, VAR_OUTGOING_INTERFACE) }
 228 interface-automatic{COLON}      { YDVAR(1, VAR_INTERFACE_AUTOMATIC) }
 229 so-rcvbuf{COLON}                { YDVAR(1, VAR_SO_RCVBUF) }
 230 so-sndbuf{COLON}                { YDVAR(1, VAR_SO_SNDBUF) }
 231 so-reuseport{COLON}             { YDVAR(1, VAR_SO_REUSEPORT) }
 232 chroot{COLON}                   { YDVAR(1, VAR_CHROOT) }
 233 username{COLON}                 { YDVAR(1, VAR_USERNAME) }
 234 directory{COLON}                { YDVAR(1, VAR_DIRECTORY) }
 235 logfile{COLON}                  { YDVAR(1, VAR_LOGFILE) }
 236 pidfile{COLON}                  { YDVAR(1, VAR_PIDFILE) }
 237 root-hints{COLON}               { YDVAR(1, VAR_ROOT_HINTS) }
 238 edns-buffer-size{COLON}         { YDVAR(1, VAR_EDNS_BUFFER_SIZE) }
 239 msg-buffer-size{COLON}          { YDVAR(1, VAR_MSG_BUFFER_SIZE) }
 240 msg-cache-size{COLON}           { YDVAR(1, VAR_MSG_CACHE_SIZE) }
 241 msg-cache-slabs{COLON}          { YDVAR(1, VAR_MSG_CACHE_SLABS) }
 242 rrset-cache-size{COLON}         { YDVAR(1, VAR_RRSET_CACHE_SIZE) }
 243 rrset-cache-slabs{COLON}        { YDVAR(1, VAR_RRSET_CACHE_SLABS) }
 244 cache-max-ttl{COLON}            { YDVAR(1, VAR_CACHE_MAX_TTL) }
 245 cache-min-ttl{COLON}            { YDVAR(1, VAR_CACHE_MIN_TTL) }
 246 infra-host-ttl{COLON}           { YDVAR(1, VAR_INFRA_HOST_TTL) }
 247 infra-lame-ttl{COLON}           { YDVAR(1, VAR_INFRA_LAME_TTL) }
 248 infra-cache-slabs{COLON}        { YDVAR(1, VAR_INFRA_CACHE_SLABS) }
 249 infra-cache-numhosts{COLON}     { YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) }
 250 infra-cache-lame-size{COLON}    { YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) }
 251 num-queries-per-thread{COLON}   { YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) }
 252 jostle-timeout{COLON}           { YDVAR(1, VAR_JOSTLE_TIMEOUT) }
 253 delay-close{COLON}              { YDVAR(1, VAR_DELAY_CLOSE) }
 254 target-fetch-policy{COLON}      { YDVAR(1, VAR_TARGET_FETCH_POLICY) }
 255 harden-short-bufsize{COLON}     { YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) }
 256 harden-large-queries{COLON}     { YDVAR(1, VAR_HARDEN_LARGE_QUERIES) }
 257 harden-glue{COLON}              { YDVAR(1, VAR_HARDEN_GLUE) }
 258 harden-dnssec-stripped{COLON}   { YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) }
 259 harden-below-nxdomain{COLON}    { YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) }
 260 harden-referral-path{COLON}     { YDVAR(1, VAR_HARDEN_REFERRAL_PATH) }
 261 use-caps-for-id{COLON}          { YDVAR(1, VAR_USE_CAPS_FOR_ID) }
 262 unwanted-reply-threshold{COLON} { YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) }
 263 private-address{COLON}          { YDVAR(1, VAR_PRIVATE_ADDRESS) }
 264 private-domain{COLON}           { YDVAR(1, VAR_PRIVATE_DOMAIN) }
 265 prefetch-key{COLON}             { YDVAR(1, VAR_PREFETCH_KEY) }
 266 prefetch{COLON}                 { YDVAR(1, VAR_PREFETCH) }
 267 stub-zone{COLON}                { YDVAR(0, VAR_STUB_ZONE) }
 268 name{COLON}                     { YDVAR(1, VAR_NAME) }
 269 stub-addr{COLON}                { YDVAR(1, VAR_STUB_ADDR) }
 270 stub-host{COLON}                { YDVAR(1, VAR_STUB_HOST) }
 271 stub-prime{COLON}               { YDVAR(1, VAR_STUB_PRIME) }
 272 stub-first{COLON}               { YDVAR(1, VAR_STUB_FIRST) }
 273 forward-zone{COLON}             { YDVAR(0, VAR_FORWARD_ZONE) }
 274 forward-addr{COLON}             { YDVAR(1, VAR_FORWARD_ADDR) }
 275 forward-host{COLON}             { YDVAR(1, VAR_FORWARD_HOST) }
 276 forward-first{COLON}            { YDVAR(1, VAR_FORWARD_FIRST) }
 277 do-not-query-address{COLON}     { YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) }
 278 do-not-query-localhost{COLON}   { YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) }
 279 access-control{COLON}           { YDVAR(2, VAR_ACCESS_CONTROL) }
 280 hide-identity{COLON}            { YDVAR(1, VAR_HIDE_IDENTITY) }
 281 hide-version{COLON}             { YDVAR(1, VAR_HIDE_VERSION) }
 282 identity{COLON}                 { YDVAR(1, VAR_IDENTITY) }
 283 version{COLON}                  { YDVAR(1, VAR_VERSION) }
 284 module-config{COLON}            { YDVAR(1, VAR_MODULE_CONF) }
 285 dlv-anchor{COLON}               { YDVAR(1, VAR_DLV_ANCHOR) }
 286 dlv-anchor-file{COLON}          { YDVAR(1, VAR_DLV_ANCHOR_FILE) }
 287 trust-anchor-file{COLON}        { YDVAR(1, VAR_TRUST_ANCHOR_FILE) }
 288 auto-trust-anchor-file{COLON}   { YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) }
 289 trusted-keys-file{COLON}        { YDVAR(1, VAR_TRUSTED_KEYS_FILE) }
 290 trust-anchor{COLON}             { YDVAR(1, VAR_TRUST_ANCHOR) }
 291 val-override-date{COLON}        { YDVAR(1, VAR_VAL_OVERRIDE_DATE) }
 292 val-sig-skew-min{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MIN) }
 293 val-sig-skew-max{COLON}         { YDVAR(1, VAR_VAL_SIG_SKEW_MAX) }
 294 val-bogus-ttl{COLON}            { YDVAR(1, VAR_BOGUS_TTL) }
 295 val-clean-additional{COLON}     { YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) }
 296 val-permissive-mode{COLON}      { YDVAR(1, VAR_VAL_PERMISSIVE_MODE) }
 297 ignore-cd-flag{COLON}           { YDVAR(1, VAR_IGNORE_CD_FLAG) }
 298 val-log-level{COLON}            { YDVAR(1, VAR_VAL_LOG_LEVEL) }
 299 key-cache-size{COLON}           { YDVAR(1, VAR_KEY_CACHE_SIZE) }
 300 key-cache-slabs{COLON}          { YDVAR(1, VAR_KEY_CACHE_SLABS) }
 301 neg-cache-size{COLON}           { YDVAR(1, VAR_NEG_CACHE_SIZE) }
 302 val-nsec3-keysize-iterations{COLON}     {
 303                                   YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) }
 304 add-holddown{COLON}             { YDVAR(1, VAR_ADD_HOLDDOWN) }
 305 del-holddown{COLON}             { YDVAR(1, VAR_DEL_HOLDDOWN) }
 306 keep-missing{COLON}             { YDVAR(1, VAR_KEEP_MISSING) }
 307 use-syslog{COLON}               { YDVAR(1, VAR_USE_SYSLOG) }
 308 log-time-ascii{COLON}           { YDVAR(1, VAR_LOG_TIME_ASCII) }
 309 log-queries{COLON}              { YDVAR(1, VAR_LOG_QUERIES) }
 310 local-zone{COLON}               { YDVAR(2, VAR_LOCAL_ZONE) }
 311 local-data{COLON}               { YDVAR(1, VAR_LOCAL_DATA) }
 312 local-data-ptr{COLON}           { YDVAR(1, VAR_LOCAL_DATA_PTR) }
 313 unblock-lan-zones{COLON}        { YDVAR(1, VAR_UNBLOCK_LAN_ZONES) }
 314 statistics-interval{COLON}      { YDVAR(1, VAR_STATISTICS_INTERVAL) }
 315 statistics-cumulative{COLON}    { YDVAR(1, VAR_STATISTICS_CUMULATIVE) }
 316 extended-statistics{COLON}      { YDVAR(1, VAR_EXTENDED_STATISTICS) }
 317 remote-control{COLON}           { YDVAR(0, VAR_REMOTE_CONTROL) }
 318 control-enable{COLON}           { YDVAR(1, VAR_CONTROL_ENABLE) }
 319 control-interface{COLON}        { YDVAR(1, VAR_CONTROL_INTERFACE) }
 320 control-port{COLON}             { YDVAR(1, VAR_CONTROL_PORT) }
 321 server-key-file{COLON}          { YDVAR(1, VAR_SERVER_KEY_FILE) }
 322 server-cert-file{COLON}         { YDVAR(1, VAR_SERVER_CERT_FILE) }
 323 control-key-file{COLON}         { YDVAR(1, VAR_CONTROL_KEY_FILE) }
 324 control-cert-file{COLON}        { YDVAR(1, VAR_CONTROL_CERT_FILE) }
 325 python-script{COLON}            { YDVAR(1, VAR_PYTHON_SCRIPT) }
 326 python{COLON}                   { YDVAR(0, VAR_PYTHON) }
 327 domain-insecure{COLON}          { YDVAR(1, VAR_DOMAIN_INSECURE) }
 328 minimal-responses{COLON}        { YDVAR(1, VAR_MINIMAL_RESPONSES) }
 329 rrset-roundrobin{COLON}         { YDVAR(1, VAR_RRSET_ROUNDROBIN) }
 330 max-udp-size{COLON}             { YDVAR(1, VAR_MAX_UDP_SIZE) }
 331 <INITIAL,val>{NEWLINE}          { LEXOUT(("NL\n")); cfg_parser->line++; }
 332
 333         /* Quoted strings. Strip leading and ending quotes */
 334 <val>\"                 { BEGIN(quotedstring); LEXOUT(("QS ")); }
 335 <quotedstring><<EOF>>   {
 336         ub_c_error("EOF inside quoted string");
 337         if(--num_args == 0) { BEGIN(INITIAL); }
 338         else                { BEGIN(val); }
 339 }
 340 <quotedstring>{DQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 341 <quotedstring>{NEWLINE} { ub_c_error("newline inside quoted string, no end \"");
 342                           cfg_parser->line++; BEGIN(INITIAL); }
 343 <quotedstring>\" {
 344         LEXOUT(("QE "));
 345         if(--num_args == 0) { BEGIN(INITIAL); }
 346         else                { BEGIN(val); }
 347         ub_c_text[ub_c_leng - 1] = '\0';
 348         ub_c_lval.str = strdup(ub_c_text);
 349         if(!ub_c_lval.str)
 350                 ub_c_error("out of memory");
 351         return STRING_ARG;
 352 }
 353
 354         /* Single Quoted strings. Strip leading and ending quotes */
 355 <val>\'                 { BEGIN(singlequotedstr); LEXOUT(("SQS ")); }
 356 <singlequotedstr><<EOF>>   {
 357         ub_c_error("EOF inside quoted string");
 358         if(--num_args == 0) { BEGIN(INITIAL); }
 359         else                { BEGIN(val); }
 360 }
 361 <singlequotedstr>{SQANY}*  { LEXOUT(("STR(%s) ", ub_c_text)); yymore(); }
 362 <singlequotedstr>{NEWLINE} { ub_c_error("newline inside quoted string, no end '");
 363                              cfg_parser->line++; BEGIN(INITIAL); }
 364 <singlequotedstr>\' {
 365         LEXOUT(("SQE "));
 366         if(--num_args == 0) { BEGIN(INITIAL); }
 367         else                { BEGIN(val); }
 368         ub_c_text[ub_c_leng - 1] = '\0';
 369         ub_c_lval.str = strdup(ub_c_text);
 370         if(!ub_c_lval.str)
 371                 ub_c_error("out of memory");
 372         return STRING_ARG;
 373 }
 374
 375         /* include: directive */
 376 <INITIAL,val>include{COLON}     {
 377         LEXOUT(("v(%s) ", ub_c_text)); inc_prev = YYSTATE; BEGIN(include); }
 378 <include><<EOF>>        {
 379         ub_c_error("EOF inside include directive");
 380         BEGIN(inc_prev);
 381 }
 382 <include>{SPACE}*       { LEXOUT(("ISP ")); /* ignore */ }
 383 <include>{NEWLINE}      { LEXOUT(("NL\n")); cfg_parser->line++;}
 384 <include>\"             { LEXOUT(("IQS ")); BEGIN(include_quoted); }
 385 <include>{UNQUOTEDLETTER}*      {
 386         LEXOUT(("Iunquotedstr(%s) ", ub_c_text));
 387         config_start_include_glob(ub_c_text);
 388         BEGIN(inc_prev);
 389 }
 390 <include_quoted><<EOF>> {
 391         ub_c_error("EOF inside quoted string");
 392         BEGIN(inc_prev);
 393 }
 394 <include_quoted>{DQANY}*        { LEXOUT(("ISTR(%s) ", ub_c_text)); yymore(); }
 395 <include_quoted>{NEWLINE}       { ub_c_error("newline before \" in include name");
 396                                   cfg_parser->line++; BEGIN(inc_prev); }
 397 <include_quoted>\"      {
 398         LEXOUT(("IQE "));
 399         ub_c_text[ub_c_leng - 1] = '\0';
 400         config_start_include_glob(ub_c_text);
 401         BEGIN(inc_prev);
 402 }
 403 <INITIAL,val><<EOF>>    {
 404         LEXOUT(("LEXEOF "));
 405         yy_set_bol(1); /* Set beginning of line, so "^" rules match.  */
 406         if (!config_include_stack) {
 407                 yyterminate();
 408         } else {
 409                 fclose(ub_c_in);
 410                 config_end_include();
 411         }
 412 }
 413
 414 <val>{UNQUOTEDLETTER}*  { LEXOUT(("unquotedstr(%s) ", ub_c_text));
 415                         if(--num_args == 0) { BEGIN(INITIAL); }
 416                         ub_c_lval.str = strdup(ub_c_text); return STRING_ARG; }
 417
 418 {UNQUOTEDLETTER_NOCOLON}*       {
 419         ub_c_error_msg("unknown keyword '%s'", ub_c_text);
 420         }
 421
 422 <*>.    {
 423         ub_c_error_msg("stray '%s'", ub_c_text);
 424         }
 425
 426 %%