Files
epics-base/src/as/asLib.y
Marty Kraimer 07362375e4 asLib_lex.l changed to allow more characters(like dbLoadxxx)
Fixed bug that could cause deadlock when an ASG field is changed at run time.
1998-05-20 20:59:13 +00:00

235 lines
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%{
static int yyerror();
static int yy_start;
static int myParse();
#include "asLibRoutines.c"
static int yyFailed = FALSE;
static int line_num=1;
static UAG *yyUag=NULL;
static HAG *yyHag=NULL;
static ASG *yyAsg=NULL;
static ASGRULE *yyAsgRule=NULL;
%}
%start asconfig
%token tokenUAG tokenHAG tokenASG tokenRULE tokenCALC
%token <Str> tokenINP
%token <Int> tokenINTEGER
%token <Str> tokenNAME tokenSTRING
%union
{
int Int;
char Char;
char *Str;
double Real;
}
%%
asconfig: asconfig asconfig_item
| asconfig_item
asconfig_item: tokenUAG uag_head uag_body
| tokenUAG uag_head
| tokenHAG hag_head hag_body
| tokenHAG hag_head
| tokenASG asg_head asg_body
| tokenASG asg_head
;
uag_head: '(' tokenNAME ')'
{
yyUag = asUagAdd($2);
if(!yyUag) yyerror("");
free((void *)$2);
}
;
uag_body: '{' uag_user_list '}'
{
;
}
;
uag_user_list: uag_user_list ',' uag_user_list_name
| uag_user_list_name
;
uag_user_list_name: tokenNAME
{
long status;
status = asUagAddUser(yyUag,$1);
if(status) {
yyerror($1);
}
free((void *)$1);
}
;
hag_head: '(' tokenNAME ')'
{
yyHag = asHagAdd($2);
if(!yyHag) yyerror("");
free((void *)$2);
}
;
hag_body: '{' hag_user_list '}'
;
hag_user_list: hag_user_list ',' hag_user_list_name
| hag_user_list_name
;
hag_user_list_name: tokenNAME
{
long status;
status = asHagAddHost(yyHag,$1);
if(status) {
yyerror("");
}
free((void *)$1);
}
;
asg_head: '(' tokenNAME ')'
{
yyAsg = asAsgAdd($2);
if(!yyAsg) yyerror("");
free((void *)$2);
}
;
asg_body: '{' asg_body_list '}'
{
}
asg_body_list: asg_body_list asg_body_item
| asg_body_item
asg_body_item: inp_config | rule_config
;
inp_config: tokenINP '(' inp_body ')'
{
long status;
status = asAsgAddInp(yyAsg,$<Str>3,$<Int>1);
if(status) {
yyerror("");
}
free((void *)$<Str>3);
}
;
inp_body: tokenNAME
;
rule_config: tokenRULE rule_head rule_body
| tokenRULE rule_head
rule_head: '(' tokenINTEGER ',' tokenNAME ')'
{
asAccessRights rights;
if((strcmp($4,"NONE")==0)) {
rights=asNOACCESS;
} else if((strcmp($4,"READ")==0)) {
rights=asREAD;
} else if((strcmp($4,"WRITE")==0)) {
rights=asWRITE;
} else {
yyerror("Illegal access type");
rights = asNOACCESS;
}
yyAsgRule = asAsgAddRule(yyAsg,rights,$2);
free((void *)$4);
}
;
rule_body: '{' rule_list '}'
;
rule_list: rule_list rule_list_item
| rule_list_item
;
rule_list_item: tokenUAG '(' rule_uag_list ')'
| tokenHAG '(' rule_hag_list ')'
| tokenCALC '(' tokenSTRING ')'
{
long status;
status = asAsgRuleCalc(yyAsgRule,$3);
if(status){
yyerror("access security CALC failure");
}
free((void *)$3);
}
;
rule_uag_list: rule_uag_list ',' rule_uag_list_name
| rule_uag_list_name
;
rule_uag_list_name: tokenNAME
{
long status;
status = asAsgRuleUagAdd(yyAsgRule,$1);
if(status) {
yyerror("");
}
free((void *)$1);
}
;
rule_hag_list: rule_hag_list ',' rule_hag_list_name
| rule_hag_list_name
;
rule_hag_list_name: tokenNAME
{
long status;
status = asAsgRuleHagAdd(yyAsgRule,$1);
if(status) {
yyerror("");
}
free((void *)$1);
}
;
%%
#include "asLib_lex.c"
static int yyerror(str)
char *str;
{
epicsPrintf("Access Security Error(%s) line %d token %s\n",
str,line_num,yytext);
yyFailed = TRUE;
return(0);
}
static int myParse(ASINPUTFUNCPTR inputfunction)
{
static int FirstFlag = 1;
int rtnval;
my_yyinput = &inputfunction;
if (!FirstFlag) {
line_num=1;
yyFailed = FALSE;
yyreset(NULL);
yyrestart(NULL);
}
FirstFlag = 0;
rtnval = yyparse();
if(rtnval!=0 || yyFailed) return(-1); else return(0);
}