3 * configuration file parser; this file is actually #included from
4 * lexer.c, which is generated using flex from lexer.l, in turn from
5 * lexer.l.m4. It's in a separate file so that we don't have to worry
8 * Copyright (C)1996-1997 Ian Jackson
10 * This is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with userv; if not, write to the Free Software
22 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 static directive_fnt *lr_dir=0;
26 static parmcondition_fnt *lr_parmcond=0;
27 static parameter_fnt *lr_parameter=0;
28 static int lr_loglevel, lr_logfacility, lr_min, lr_max, *lr_flag;
29 static int lr_flagval, lr_controlend;
30 static int lr_fdwant_readwrite;
32 static void useless(void) { (void)yyunput; (void)useless; /* to shut up GCC ! */ }
34 static void closeerrorfile(void) {
35 if (eh.file && !eh.filekeep) {
36 if (fclose(eh.file)) {
37 eh.handling= tokv_word_errorstostderr;
38 parseerrprint("error writing to error log file `%s': %s",
39 eh.filename,strerror(errno));
44 eh.file= 0; eh.filename= 0; eh.filekeep= 0;
47 static void senderrmsg(const char *errmsg, int useehandling) {
48 char suberrmsg[MAX_ERRMSG_LEN];
53 switch (useehandling) {
54 case tokv_word_errorstostderr:
55 senderrmsgstderr(errmsg);
57 case tokv_word_errorstosyslog:
58 ensurelogopen(eh.logfacility);
59 syslog(eh.loglevel,"%s",errmsg);
61 case tokv_word_errorstofile:
62 if (time(&now)==-1) syscallerror("get current time");
63 lt= localtime(&now); if (!lt) syscallerror("convert current time");
64 if (fprintf(eh.file,"%d-%02d-%02d %02d:%02d:%02d: uservd: %s\n",
65 lt->tm_year+1900, lt->tm_mon+1, lt->tm_mday,
66 lt->tm_hour, lt->tm_min, lt->tm_sec,
69 closeerrorfile(); eh.handling= tokv_word_errorstofile;
70 snyprintf(suberrmsg,sizeof(suberrmsg),
71 "error writing to error log file `%.*s': %s;"
72 " reverting to errors-to-stderr",
73 (int)(sizeof(suberrmsg)>>1),eh.filename,strerror(e));
74 senderrmsg(suberrmsg,eh.handling);
75 senderrmsg(errmsg,eh.handling);
83 static void errwhere(struct parser_state *tstate, char *bufput, int bufputlen) {
84 static const char suffix[]= "references ...";
85 char errmsg[MAX_ERRMSG_LEN];
88 strnycpy(bufput,"<initialisation>: ",bufputlen);
91 if (!tstate->notedreferer && tstate->upstate && !tstate->upstate->isinternal) {
92 errwhere(tstate->upstate,errmsg,sizeof(errmsg)-sizeof(suffix));
93 strcat(errmsg,suffix);
94 senderrmsg(errmsg,eh.handling);
95 tstate->notedreferer= 1;
97 snyprintf(bufput,bufputlen,"%.*s:%d: ",bufputlen-10,
98 tstate->filename,tstate->reportlineno);
101 void parseerrprint(const char *fmt, ...) {
103 char errmsg[MAX_ERRMSG_LEN];
106 errwhere(cstate,errmsg,sizeof(errmsg)>>1);
107 vsnytprintfcat(errmsg,sizeof(errmsg),fmt,al);
108 senderrmsg(errmsg,eh.handling);
112 static void freecharparray(char **array) {
116 for (pp=array; *pp; pp++) free(*pp);
120 static int dequote(char *inplace) {
121 char *p, *q, buf[4], *bep;
126 while (*p && *p != '"') {
127 if (*p != '\\') { *q++= *p++; continue; }
129 case 'n': *q++= '\n'; continue;
130 case 'r': *q++= '\r'; continue;
131 case 't': *q++= '\t'; continue;
133 assert(buf[0]= *++p); assert(buf[1]= *++p); buf[2]= 0;
134 v= strtoul(buf,&bep,16); assert(bep == buf+2);
135 assert(!(v & ~0xff)); *q++= v; p++; continue;
138 parseerrprint("unknown \\<letter> sequence \\%c in quoted string",*p);
140 } else if (isdigit(*p)) {
141 assert(buf[0]= *++p); assert(buf[1]= *++p); assert(buf[2]= *++p);
142 buf[3]= 0; v= strtoul(buf,&bep,8);
143 if (bep != buf+3 || (v & ~0xff)); {
144 parseerrprint("invalid \\<octal> sequence \\%s in quoted string",buf);
147 *q++= v; p++; continue;
148 } else if (ispunct(*p)) {
149 *q++= *p++; continue;
151 while (*p==' ' || *p=='\t') p++;
156 assert(*p); assert(!*++p); return tokv_quotedstring;
159 const char *printtoken(int token) {
160 static char buf[250];
166 if ((token & tokm_repres) == tokr_word) {
167 assert(strlen(yytext)+50<sizeof(buf));
168 sprintf(buf,"word `%s'",yytext);
170 } else if (token & tokt_number) {
171 sprintf(buf,"number %d",lr_min); return buf;
172 } else if (token & tokt_fdrange) {
173 sprintf(buf,"fdrange %d..%d",lr_min,lr_max); return buf;
174 } else if ((token & tokm_repres) == tokr_punct) {
175 assert(strlen(yytext)+50<sizeof(buf));
176 sprintf(buf,"operator `%s'",yytext);
178 } else if (token & tokt_string) {
180 case tokv_barestring: strcpy(buf,"unquoted string (bare word)"); break;
181 case tokv_quotedstring: strcpy(buf,"quoted string"); break;
185 i= sizeof(buf)-50; p= yytext; q= buf+strlen(buf);
186 while (i-- >0 && (c= *p++)) {
187 if (isspace(c)) c= ' ';
188 else if (!isprint(c) || iscntrl(c)) c= '?';
195 case tokv_lwsp: return "linear whitespace";
196 case tokv_newline: return "newline (or comment followed by newline)";
197 case tokv_eof: return "end of input file";
198 case tokv_error: return "syntax error token";
200 sprintf(buf,"token#0%o",token); return buf;
205 static const char *string2path(const char *in) {
209 if (strncmp(in,"~/",2)) return in;
210 makeroom(&p,&pl,strlen(serviceuser_dir)+1+strlen(in+2)+1);
211 snyprintf(p,pl,"%s/%s",serviceuser_dir,in+2);
215 static void parser_push(struct parser_state *usestate,
217 YY_BUFFER_STATE ybuf,
220 usestate->reportlineno= 1;
221 usestate->filename= newfile;
222 usestate->notedreferer= 0;
223 usestate->isinternal= isinternal;
224 usestate->ybuf= ybuf;
225 usestate->upstate= cstate;
228 yy_switch_to_buffer(ybuf);
231 static void parser_pop(void) {
232 struct parser_state *oldstate;
235 cstate= cstate->upstate;
236 if (cstate) yy_switch_to_buffer(cstate->ybuf);
237 yy_delete_buffer(oldstate->ybuf);
240 /* parser component functions pa_ return tokv_error or 0,
241 * having scanned exactly what they were expecting
242 * complete argument list parsers paa_ return tokv_error or 0,
243 * having scanned up to and including the newline
246 static int unexpected(int found, int wanted, const char *wantedstr) {
247 /* pass wanted==-1 if you know it's not what you wanted;
248 * otherwise this function will check it for you.
250 if (found == wanted) return 0;
251 if (found != tokv_error) {
252 parseerrprint("found %s, expected %s",printtoken(found),wantedstr);
257 static int pa_mnl(void) {
258 return unexpected(yylex(),tokv_newline,"newline");
260 static int pa_mwsp(void) {
261 return unexpected(yylex(),tokv_lwsp,"linear whitespace");
264 static void parm_1string(char ***rvalues, const char *tocopy) {
266 a= xmalloc(sizeof(char*)*2);
267 a[0]= xstrsave(tocopy);
272 static int pa_string(const char **rv) {
273 /* Value returned in *rv is overwritten by repeated calls */
279 r= pa_mwsp(); if (r) return r;
280 r= yylex(); if (r == tokv_error) return r;
281 if ((r & tokm_repres) == tokr_nonstring) return unexpected(r,-1,"string");
284 strcpy(p,yytext); *rv= p;
289 static int paa_1string(const char **rv) {
290 /* Value returned in *rv is overwritten by repeated calls */
293 r= pa_string(rv); if (r) return r;
297 static int paa_1path(const char **rv) {
298 /* Value returned in *rv is overwritten by repeated calls */
302 r= paa_1string(&cp); if (r) return r;
303 *rv= string2path(cp); return 0;
306 static int pa_parameter(char ***rvalues) {
307 /* Scans a single parameter token and calls the appropriate parameter
308 * function, returning tokv_error or 0 just like the parameter function.
312 token= yylex(); if (token == tokv_error) return token;
313 if ((token & tokm_repres) != tokr_nonstring &&
314 !memcmp(yytext,"u-",2) && strlen(yytext)>=3) {
316 i<request_mbuf.nvars && strcmp(yytext+2,defvararray[i][0]);
318 if (i>=request_mbuf.nvars) {
319 *rvalues= xmalloc(sizeof(char*));
322 parm_1string(rvalues,defvararray[i][1]);
325 if (!(token & tokt_parameter)) return unexpected(token,-1,"parameter name");
326 r= (lr_parameter)(token,rvalues);
329 debug_dumpparameter(yytext,*rvalues);
333 static int pa_condition(int *rtrue) {
334 /* Scans up to and including the newline following the condition;
335 * may scan more than one line if the condition is a multi-line
336 * one. Returns 0 (setting *rtrue) or tokv_error. Expects to
337 * scan the whitespace before its condition.
339 int r, token, andor, ctrue, actrue;
342 r= pa_mwsp(); if (r) return r;
344 if (token == tokv_error) {
346 } else if (token == tokv_not) {
347 r= pa_condition(&ctrue); if (r) return r;
348 *rtrue= !ctrue; return 0;
349 } else if (token == tokv_openparen) {
350 andor= 0; actrue= -1;
352 cstate->reportlineno= cstate->lineno;
353 r= pa_condition(&ctrue); if (r) return r;
355 case 0: assert(actrue==-1); actrue= ctrue; break;
356 case tokv_and: assert(actrue>=0); actrue= actrue && ctrue; break;
357 case tokv_or: assert(actrue>=0); actrue= actrue || ctrue; break;
360 do { token= yylex(); } while (token == tokv_lwsp);
361 if (token == tokv_error) return token;
362 if (token == tokv_closeparen) break;
364 r= unexpected(token,andor,"same conjunction as before"); if (r) return r;
366 if (token != tokv_and && token != tokv_or)
367 return unexpected(token,-1,"first conjunction inside connective");
371 r= pa_mnl(); if (r) return r;
372 *rtrue= actrue; return 0;
373 } else if (token & tokt_parmcondition) {
374 r= pa_mwsp(); if (r) return r;
375 r= pa_parameter(&parmvalues); if (r) return r;
376 r= (lr_parmcond)(token,parmvalues,rtrue); freecharparray(parmvalues);
379 return unexpected(token,-1,"condition");
382 static int pa_numberdollar(int *rv) {
383 /* Also parses the whitespace beforehand. */
386 r= pa_mwsp(); if (r) return r;
387 r= yylex(); if (r == tokv_error || r == tokv_dollar) return r;
388 if (unexpected(r,tokv_ordinal,"expected number or dollar")) return tokv_error;
389 *rv= lr_min; return r;
392 /* Main parser routines */
394 static int skiptoeol(void) {
397 do { token= yylex(); }
398 while (token != tokv_newline && !(token & tokt_exception));
399 if (token == tokv_newline) return 0;
400 if (token == tokv_error) return token;
401 assert(token == tokv_eof);
402 parseerrprint("unexpected end of file while looking for end of line");
406 static int skip(int allowce) {
407 /* Scans a piece of config without executing it.
408 * Returns tokv_error, or the tokt_controlend token
409 * with type allowce if one was found.
413 for (;;) { /* loop over lines */
414 cstate->reportlineno= cstate->lineno;
415 do { token= yylex(); } while (token == tokv_lwsp);
416 if (token & tokt_exception) {
418 } else if (token & tokt_controlend) {
419 if (allowce == lr_controlend) return token;
420 return unexpected(token,-1,"control structure end of a different kind");
421 } else if (token & tokt_controlstart) {
423 while (r & tokt_controlstart) {
424 r= skiptoeol(); if (r) return r;
425 cstate->reportlineno= cstate->lineno;
426 r= skip(token); if (r & tokt_exception) return r;
428 } else if (!(token & tokt_directive) && !(token & tokt_condop)) {
429 parseerrprint("not a directive (or conditional operator) "
430 "while looking for control structure end");
433 r= skiptoeol(); if (r) return r;
437 static int parser(int allowce) {
439 * an exception (error, eof or quit)
440 * then rest of `file' is uninteresting
442 * token if allowce was !0 and equal to token's controlend
443 * then rest of `file' not scanned yet
447 for (;;) { /* loop over lines */
448 cstate->reportlineno= cstate->lineno;
449 do { token= yylex(); } while (token == tokv_lwsp);
450 if (token & tokt_exception) {
452 } else if (token & tokt_controlend) {
453 if (lr_controlend == allowce) return token;
454 return unexpected(token,-1,"directive (not this kind of control structure end)");
455 } else if (token & tokt_directive) {
456 r= (lr_dir)(token); if (r) { assert(r & tokt_exception); return r; }
457 } else if (token == tokv_newline) {
458 /* ignore blank links (and comment-only lines) */
460 return unexpected(token,-1,"directive");
465 int parse_string(const char *string, const char *descrip, int isinternal) {
466 /* Returns the same things as parser, except that tokv_eof
467 * is turned into 0. */
468 struct parser_state usestate;
469 YY_BUFFER_STATE ybuf;
472 ybuf= yy_scan_string(string);
473 if (!ybuf) syscallerror("unable to create flex buffer for internal string");
474 parser_push(&usestate,descrip,ybuf,isinternal);
479 if (r == tokv_eof) r= 0;
483 static int parse_file(const char *string, int *didexist) {
484 /* Returns the same things as parser, except that tokv_eof
485 * is turned into 0. */
486 static int fileparselevel= 0;
488 struct parser_state usestate;
489 YY_BUFFER_STATE ybuf;
493 if (fileparselevel >= MAX_INCLUDE_NEST) {
494 parseerrprint("too many nested levels of included files");
497 file= fopen(string,"r"); if (!file) {
498 if (errno == ENOENT) {
499 if (didexist) *didexist= 0;
502 parseerrprint("unable to open config file `%s': %s",string,strerror(errno));
505 if (didexist) *didexist= 1;
507 ybuf= yy_create_buffer(file,YY_BUF_SIZE);
508 if (!ybuf) syscallerror("unable to create flex buffer for file");
509 parser_push(&usestate,string,ybuf,0);
514 parseerrprint("error reading configuration file `%s'",string);
521 if (r == tokv_eof) r= 0;
525 /* Parameter-based conditional functions (parmcondition's) */
527 int pcf_glob(int ctoken, char **pv, int *rtrue) {
528 int token, actrue, r;
532 r= pa_mwsp(); if (r) return r;
535 if ((token & tokm_repres) == tokr_nonstring)
536 return unexpected(token,-1,"glob pattern");
537 for (pp= pv; !actrue && *pp; pp++) if (!fnmatch(yytext,*pp,0)) actrue= 1;
539 if (token == tokv_newline) break;
540 if (unexpected(token,tokv_lwsp,"newline after or whitespace between glob patterns"))
547 int pcf_range(int ctoken, char **pv, int *rtrue) {
548 int mintoken, min, maxtoken, max, r;
552 r= pa_mwsp(); if (r) return r;
553 mintoken= pa_numberdollar(&min); if (mintoken == tokv_error) return mintoken;
554 r= pa_mwsp(); if (r) return r;
555 maxtoken= pa_numberdollar(&max); if (maxtoken == tokv_error) return maxtoken;
556 r= pa_mnl(); if (r) return r;
557 for (pp= pv; *pp; pp++) {
558 v= strtoul(*pp,&ep,10); if (*ep) continue;
559 if (mintoken != tokv_dollar && v < min) continue;
560 if (maxtoken != tokv_dollar && v > max) continue;
566 int pcf_grep(int ctoken, char **pv, int *rtrue) {
570 int r, maxlen, l, c, actrue, posstrue;
572 r= paa_1path(&cp); if (r) return r;
573 file= fopen(cp,"r"); if (!file) {
574 parseerrprint("unable to open file `%s' for grep: %s",cp,strerror(errno));
578 for (pp= pv; *pp; pp++) { l= strlen(*pp); if (l > maxlen) maxlen= l; }
579 buf= xmalloc(maxlen+2); actrue= 0; c= 0;
580 while (!actrue && c!=EOF) {
581 c= getc(file); if (c==EOF) break;
582 if (isspace(c)) continue;
584 while (l>0 && c!='\n' && c!=EOF) { *p++= c; l--; c= getc(file); }
585 if (c=='\n' || c==EOF || isspace(c)) {
586 while (p>buf && isspace(p[-1])) --p;
588 for (pp= pv; *pp; pp++) if (!strcmp(*pp,buf)) { posstrue= 1; break; }
592 if (c!='\n' && c!=EOF) {
595 if (c==EOF || c=='\n') break;
596 if (!isspace(c)) posstrue= 0;
599 if (posstrue) actrue= 1;
602 parseerrprint("error while reading `%s' for grep: %s",cp,strerror(errno));
603 fclose(file); free(buf); return tokv_error;
605 assert(actrue || feof(file));
606 fclose(file); free(buf); *rtrue= actrue; return 0;
609 /* Parameter functions and associated `common code' functions */
611 int pf_service(int ptoken, char ***rvalues) {
612 parm_1string(rvalues,service); return 0;
615 static char *parm_ulong(unsigned long ul) {
619 l= CHAR_BIT*sizeof(unsigned long)/3+4;
621 snyprintf(p,l,"%lu",ul);
625 static int parm_usernameuid(char ***rvalues, const char *name, uid_t id) {
627 a= xmalloc(sizeof(char*)*3);
628 a[0]= xstrsave(name);
629 a[1]= parm_ulong(id);
631 *rvalues= a; return 0;
634 int pf_callinguser(int ptoken, char ***rvalues) {
635 return parm_usernameuid(rvalues,logname,request_mbuf.callinguid);
638 int pf_serviceuser(int ptoken, char ***rvalues) {
639 return parm_usernameuid(rvalues,serviceuser,serviceuser_uid);
642 static char *parm_gidname(gid_t id) {
643 static char ebuf[200];
649 sprintf(ebuf,"look up group with id %lu",(unsigned long)id);
652 return xstrsave(ge->gr_name);
655 static int parm_gids(char ***rvalues, int size, gid_t *list) {
659 if (size >= 2 && list[0] == list[1]) { size--; list++; }
660 a= xmalloc(sizeof(char*)*(size+1)*2);
661 for (i=0; i<size; i++) {
662 a[i]= parm_gidname(list[i]);
663 a[size+i]= parm_ulong(list[i]);
666 *rvalues= a; return 0;
669 int pf_callinggroup(int ptoken, char ***rvalues) {
670 return parm_gids(rvalues,request_mbuf.ngids,calling_gids);
673 int pf_servicegroup(int ptoken, char ***rvalues) {
674 return parm_gids(rvalues,service_ngids,service_gids);
677 int pf_callingusershell(int ptoken, char ***rvalues) {
678 parm_1string(rvalues,callinguser_shell); return 0;
681 int pf_serviceusershell(int ptoken, char ***rvalues) {
682 parm_1string(rvalues,serviceuser_shell); return 0;
685 /* Directive functions and associated `common code' functions */
687 int df_reject(int dtoken) {
690 r= pa_mnl(); if (r) return r;
691 execute= tokv_word_reject;
692 free(execpath); execpath= 0;
693 freecharparray(execargs); execargs= 0;
697 int df_executefrompath(int dtoken) {
700 r= pa_mnl(); if (r) return r;
701 execute= tokv_word_executefrompath;
702 free(execpath); execpath= 0;
703 freecharparray(execargs); execargs= 0;
707 static int paa_pathargs(const char **rv, char ***newargs_r) {
708 /* Repeated calls do _not_ overwrite newargs_r; caller must free.
709 * Repeated calls _do_ overwrite string returned in rv.
715 newargs= xmalloc(sizeof(char*)*(size+1));
716 r= pa_string(rv); if (r == tokv_error) return r;
718 r= yylex(); if (r == tokv_error) goto error;
719 if (r==tokv_newline) break;
720 if (unexpected(r,tokv_lwsp,"newline after or whitespace between arguments")) {
724 r= yylex(); if (r==tokv_error) goto error;
725 if ((r & tokm_repres) == tokr_nonstring) {
726 r= unexpected(r,-1,"string for command argument");
731 newargs= xrealloc(newargs,sizeof(char*)*(size+1));
733 newargs[used++]= xstrsave(yytext);
741 freecharparray(newargs);
745 int df_execute(int dtoken) {
750 r= paa_pathargs(&rv,&newargs); if (r) return r;
751 execute= tokv_word_execute;
752 freecharparray(execargs); execargs= newargs;
753 free(execpath); execpath= xstrsave(rv);
757 int df_executefromdirectory(int dtoken) {
758 const char *p, *q, *rv;
763 r= paa_pathargs(&rv,&newargs); if (r) return r;
764 p= strrchr(service,'/'); if (p) p++; else p= service;
765 if (!*p || !isalnum(*p)) {
766 parseerrprint("execute-from-directory requires initial char of service "
767 "portion to be alphanumeric (service portion was `%s')",
769 freecharparray(newargs);
772 for (q=p+1; *q; q++) {
773 if (!isalnum(*q) && *q != '-') {
774 parseerrprint("execute-from-directory requires service portion to "
775 "contain only alphanumerics and hyphens (was `%s')",
777 freecharparray(newargs);
781 l= strlen(rv)+1+strlen(p)+1;
783 snyprintf(fn,l,"%s/%s",rv,p);
784 if (stat(fn,&stab)) {
785 if (errno == ENOENT) { free(fn); freecharparray(newargs); return 0; }
786 parseerrprint("failed to stat `%s' for execute-from-directory: %s",
788 free(fn); freecharparray(newargs); return tokv_error;
790 if (!S_ISREG(stab.st_mode)) {
791 parseerrprint("file `%s' in execute-from-directory is not an ordinary file"
792 " or link to one (mode=0%o)",fn,stab.st_mode);
793 free(fn); freecharparray(newargs); return tokv_error;
795 execute= tokv_word_executefromdirectory;
796 freecharparray(execargs); execargs= newargs;
797 free(execpath); execpath= fn;
801 int df_errorstostderr(int dtoken) {
804 r= pa_mnl(); if (r) return r;
805 closeerrorfile(); eh.handling= dtoken; return 0;
808 int df_errorstosyslog(int dtoken) {
809 int token, level, facility;
811 facility= DEFUSERLOGFACILITY;
812 level= DEFUSERLOGLEVEL;
814 if (token == tokv_lwsp) {
815 token= yylex(); if (token == tokv_error) return token;
816 if (!(token & tokt_logfacility))
817 return unexpected(token,-1,"syslog facility (or end of line)");
818 facility= lr_logfacility;
821 if (token == tokv_lwsp) {
822 token= yylex(); if (token == tokv_error) return token;
823 if (!(token & tokt_loglevel))
824 return unexpected(token,-1,"syslog level (or end of line) after facility");
828 if (unexpected(token,tokv_newline,"end of line somewhere after errors-to-syslog"))
830 closeerrorfile(); eh.handling= tokv_word_errorstosyslog;
831 eh.logfacility= facility; eh.loglevel= level; return 0;
834 int df_errorstofile(int dtoken) {
839 r= paa_1path(&cp); if (r) return r;
842 parseerrprint("unable to open error log file `%s': %s",cp,strerror(errno));
845 if (setvbuf(file,0,_IOLBF,MAX_ERRMSG_LEN)) {
846 parseerrprint("unable to set line buffering on errors file: %s",strerror(errno));
847 fclose(file); return tokv_error;
849 closeerrorfile(); eh.handling= tokv_word_errorstofile;
850 eh.file= file; eh.filename= xstrsave(cp); return 0;
853 int dfg_setflag(int dtoken) {
856 r= pa_mnl(); if (r) return r;
857 *lr_flag= lr_flagval; return 0;
860 int df_reset(int dtoken) {
863 r= pa_mnl(); if (r) return r;
864 r= parse_string(RESET_CONFIGURATION,"<builtin reset configuration>",1);
865 assert(!r); return 0;
868 int df_cd(int dtoken) {
872 r= paa_1path(&cp); if (r) return r;
873 if (!chdir(cp)) return 0;
874 parseerrprint("unable to change directory to `%s': %s",cp,strerror(errno));
878 int df_userrcfile(int dtoken) {
882 r= paa_1path(&cp); if (r) return r;
883 free(userrcfile); userrcfile= xstrsave(cp);
887 int dfi_includeuserrcfile(int dtoken) {
890 r= pa_mnl(); if (r) return r;
891 if (userrcfile) return parse_file(userrcfile,0);
892 parseerrprint("_include-user-rcfile (for-internal-use directive) "
893 "found but user-rcfile not set"); return tokv_error;
896 int dfi_includeclientconfig(int dtoken) {
899 r= pa_mnl(); if (r) return r;
901 parseerrprint("_include-client-config (for-internal-use directive) "
902 "found but configuration not overridden");
905 return parse_string(overridedata,"<configuration override data>",0);
908 int df_include(int dtoken) {
912 r= paa_1path(&cp); if (r) return r;
913 r= parse_file(cp,&found); if (r) return r;
914 if (found || dtoken == tokv_word_includeifexist) return 0;
915 parseerrprint(dtoken == tokv_word_includesysconfig ?
916 "system configuration file `%s' does not exist" :
917 "included file `%s' does not exist",
922 static int paa_message(const char **message_r) {
923 static char *buildbuf;
924 static int buildbuflen;
928 r= pa_mwsp(); if (r) return r;
930 makeroom(&buildbuf,&buildbuflen,10);
933 r= yylex(); if (r == tokv_error) return r;
935 parseerrprint("unexpected end of file in message text"); return tokv_error;
937 if (r == tokv_newline) break;
939 makeroom(&buildbuf,&buildbuflen,tl);
940 strcat(buildbuf,yytext);
942 *message_r= buildbuf;
946 int df_message(int dtoken) {
950 r= paa_message(&mp); if (r) return r;
951 parseerrprint("`message' directive: %s",mp);
955 int df_error(int dtoken) {
959 r= paa_message(&mp); if (r) return r;
960 parseerrprint("`error' directive: %s",mp); return tokv_error;
963 int df_includedirectory(int dtoken) {
964 static char *buildbuf=0;
965 static int buildbuflen=0;
967 int r, cpl, tel, c, found;
972 r= paa_1path(&cp); if (r) return r;
975 parseerrprint("unable to open directory `%s': %s",cp,strerror(errno));
979 while ((de= readdir(d))) {
980 tel= strlen(de->d_name);
983 if (!isalnum(*p)) continue;
984 while ((c= *++p)) if (!(isalnum(c) || c=='-')) break;
986 makeroom(&buildbuf,&buildbuflen,cpl+1+tel+1);
987 snyprintf(buildbuf,buildbuflen,"%s/%s",cp,de->d_name);
988 r= parse_file(buildbuf,&found); if (r) { closedir(d); return r; }
990 parseerrprint("unable to open file `%s' in included directory `%s': %s",
991 de->d_name,cp,strerror(errno));
992 closedir(d); return tokv_error;
996 parseerrprint("error closing directory `%s': %s",cp,strerror(errno));
1002 int df_includelookup(int dtoken) {
1003 static char *buildbuf=0;
1006 char **parmvalues, **pp, *p, *q;
1009 int r, done, thisdone, cpl, c;
1011 r= pa_mwsp(); if (r) return r;
1012 r= pa_parameter(&parmvalues); if (r) return r;
1013 r= paa_1path(&cp); if (r) { freecharparray(parmvalues); return r; }
1014 if (stat(cp,&stab)) {
1015 parseerrprint("unable to access directory `%s': %s",cp,strerror(errno));
1016 freecharparray(parmvalues); return tokv_error;
1018 if (!S_ISDIR(stab.st_mode)) {
1019 parseerrprint("object `%s' is not a directory or link to one",cp);
1020 freecharparray(parmvalues); return tokv_error;
1024 if (!parmvalues[0]) {
1025 makeroom(&buildbuf,&buildbuflen,cpl+1+sizeof(NONEINCLUDELOOKUP));
1026 snyprintf(buildbuf,buildbuflen,"%s/" NONEINCLUDELOOKUP,cp);
1027 r= parse_file(buildbuf,&thisdone);
1028 if (r) { freecharparray(parmvalues); return r; }
1029 if (thisdone) done= 1;
1032 *pp && (!done || dtoken == tokv_word_includelookupall);
1034 makeroom(&buildbuf,&buildbuflen,
1035 cpl+1+strlen(*pp)*2+3+sizeof(EMPTYINCLUDELOOKUP)+1);
1036 strcpy(buildbuf,cp);
1037 p= *pp; q= buildbuf+cpl;
1039 if (*p=='.') *q++= ':';
1041 if (c=='/') { *q++= ':'; c='-'; }
1042 else if (c==':') { *q++= ':'; }
1046 r= parse_file(buildbuf,&thisdone);
1047 if (r) { freecharparray(parmvalues); return r; }
1048 if (thisdone) done= 1;
1051 freecharparray(parmvalues);
1053 makeroom(&buildbuf,&buildbuflen,
1054 cpl+1+sizeof(DEFAULTINCLUDELOOKUP));
1055 snyprintf(buildbuf,buildbuflen,"%s/" DEFAULTINCLUDELOOKUP,cp);
1056 r= parse_file(buildbuf,0); if (r) return r;
1061 int df_catchquit(int dtoken) {
1064 r= pa_mnl(); if (r) return r;
1065 r= parser(tokv_word_catchquit);
1066 if (r & tokt_controlend) {
1067 assert(r == tokv_word_hctac);
1069 } else if (r == tokv_quit || r == tokv_error) {
1070 if (r == tokv_error) {
1071 r= parse_string(RESET_CONFIGURATION,
1072 "<builtin reset configuration (caught error)>",1);
1075 r= skip(tokv_word_catchquit);
1076 if (r & tokt_controlend) {
1077 assert(r == tokv_word_hctac);
1084 int df_if(int dtoken) {
1089 r= pa_condition(&true); if (r) return r;
1090 if (!done && true) { r= parser(tokv_word_if); done= 1; }
1091 else { r= skip(tokv_word_if); }
1092 if (!(r & tokv_word_if)) return r;
1093 } while (r == tokv_word_elif);
1094 if (r == tokv_word_else) {
1095 r= pa_mnl(); if (r) return r;
1096 cstate->reportlineno= cstate->lineno;
1097 if (done) r= skip(tokv_word_if);
1098 else r= parser(tokv_word_if);
1099 if (!(r & tokv_word_if)) return r;
1101 if (unexpected(r,tokv_word_fi,"`fi' to end `if'")) return tokv_error;
1105 int dfg_fdwant(int dtoken) {
1106 int fdmin, fdmax, r, needreadwrite, havereadwrite, fd;
1108 needreadwrite= lr_fdwant_readwrite;
1109 r= pa_mwsp(); if (r) return r;
1110 r= yylex(); if (r == tokv_error) return r;
1111 if (!(r & tokt_fdrange)) return r;
1112 fdmin= lr_min; fdmax= lr_max;
1113 r= yylex(); if (r == tokv_error) return r;
1114 if (r == tokv_newline) {
1115 if (needreadwrite > 0) {
1116 parseerrprint("read or write is required"); return tokv_error;
1119 } else if (r == tokv_lwsp) {
1120 if (needreadwrite < 0) {
1121 parseerrprint("read or write not allowed"); return tokv_error;
1123 r= yylex(); if (r == tokv_error) return r;
1124 if (!(r & tokt_readwrite))
1125 return unexpected(r,-1,"read or write (or perhaps newline)");
1127 r= pa_mnl(); if (r) return r;
1129 return unexpected(r,-1,"whitespace before read or write or newline");
1131 ensurefdarray(fdmin);
1133 if (!(dtoken == tokv_word_rejectfd || dtoken == tokv_word_ignorefd))
1134 parseerrprint("unspecified maximum only allowed with reject-fd and ignore-fd");
1135 fdmax= fdarrayused-1;
1136 restfdwantstate= dtoken;
1137 restfdwantrw= havereadwrite;
1139 for (fd=fdmin; fd<=fdmax; fd++) {
1140 fdarray[fd].wantstate= dtoken;
1141 fdarray[fd].wantrw= havereadwrite;
1146 int df_quit(int dtoken) {
1149 r= pa_mnl(); if (r) return r;
1153 int df_eof(int dtoken) {
1156 r= pa_mnl(); if (r) return r;
1160 int df_errorspush(int dt) {
1161 struct error_handling save;
1164 r= pa_mnl(); if (r) return r;
1169 r= parser(tokv_word_errorspush);
1174 if (r & tokt_controlend) {
1175 assert(r == tokv_word_srorre);