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#ifndef INC_UTILS_H
#define INC_UTILS_H
#include <stdio.h>
#include <libestr.h>
#define CNFFUNC_MAX_ARGS 32
/**< maximum number of arguments that any function can have (among
* others, this is used to size data structures).
*/
extern int Debug; /* 1 if in debug mode, 0 otherwise -- to be enhanced */
enum cnfobjType {
CNFOBJ_ACTION,
CNFOBJ_GLOBAL,
CNFOBJ_INPUT,
CNFOBJ_MODULE,
CNFOBJ_INVALID = 0
};
static inline char*
cnfobjType2str(enum cnfobjType ot)
{
switch(ot) {
case CNFOBJ_ACTION:
return "action";
break;
case CNFOBJ_GLOBAL:
return "global";
break;
case CNFOBJ_INPUT:
return "input";
break;
case CNFOBJ_MODULE:
return "module";
break;
default:return "error: invalid cnfobjType";
}
}
enum cnfactType { CNFACT_V2, CNFACT_LEGACY };
struct cnfobj {
enum cnfobjType objType;
struct nvlst *nvlst;
};
struct nvlst {
struct nvlst *next;
es_str_t *name;
es_str_t *value;
};
struct cnfcfsyslinelst {
struct cnfcfsyslinelst *next;
char *line;
};
struct cnfactlst {
struct cnfactlst *next;
struct cnfcfsyslinelst *syslines;
enum cnfactType actType;
union {
struct nvlst *lst;
char *legActLine;
} data;
};
/* the following structures support expressions, and may (very much later
* be the sole foundation for the AST.
*
* nodetypes (list not yet complete)
* F - function
* N - number
* P - fparamlst
* R - rule
* S - string
* V - var
*/
enum cnfFiltType { CNFFILT_NONE, CNFFILT_PRI, CNFFILT_PROP, CNFFILT_SCRIPT };
static inline char*
cnfFiltType2str(enum cnfFiltType filttype)
{
switch(filttype) {
case CNFFILT_NONE:
return("filter:none");
case CNFFILT_PRI:
return("filter:pri");
case CNFFILT_PROP:
return("filter:prop");
case CNFFILT_SCRIPT:
return("filter:script");
}
return("error:invalid_filter_type"); /* should never be reached */
}
struct cnfrule {
unsigned nodetype;
enum cnfFiltType filttype;
union {
char *s;
struct cnfexpr *expr;
} filt;
struct cnfactlst *actlst;
};
struct cnfexpr {
unsigned nodetype;
struct cnfexpr *l;
struct cnfexpr *r;
};
struct cnfnumval {
unsigned nodetype;
long long val;
};
struct cnfstringval {
unsigned nodetype;
es_str_t *estr;
};
struct cnfvar {
unsigned nodetype;
char *name;
};
struct cnffparamlst {
unsigned nodetype; /* P */
struct cnffparamlst *next;
struct cnfexpr *expr;
};
enum cnffuncid {
CNFFUNC_INVALID = 0, /**< defunct entry, do not use (should normally not be present) */
CNFFUNC_NAME = 1, /**< use name to call function (for future use) */
CNFFUNC_STRLEN,
CNFFUNC_GETENV,
CNFFUNC_TOLOWER,
CNFFUNC_CSTR,
CNFFUNC_CNUM
};
struct cnffunc {
unsigned nodetype;
es_str_t *fname;
unsigned short nParams;
enum cnffuncid fID; /* function ID for built-ins, 0 means use name */
struct cnfexpr *expr[];
};
/* future extensions
struct x {
int nodetype;
};
*/
/* the return value of an expresion evaluation */
struct exprret {
union {
es_str_t *estr;
long long n;
} d;
char datatype; /* 'N' - number, 'S' - string */
};
void readConfFile(FILE *fp, es_str_t **str);
struct nvlst* nvlstNew(es_str_t *name, es_str_t *value);
void nvlstDestruct(struct nvlst *lst);
void nvlstPrint(struct nvlst *lst);
struct cnfobj* cnfobjNew(enum cnfobjType objType, struct nvlst *lst);
void cnfobjDestruct(struct cnfobj *o);
void cnfobjPrint(struct cnfobj *o);
struct cnfactlst* cnfactlstNew(enum cnfactType actType, struct nvlst *lst, char *actLine);
void cnfactlstDestruct(struct cnfactlst *actlst);
void cnfactlstPrint(struct cnfactlst *actlst);
struct cnfactlst* cnfactlstAddSysline(struct cnfactlst* actlst, char *line);
struct cnfactlst* cnfactlstReverse(struct cnfactlst *actlst);
struct cnfexpr* cnfexprNew(unsigned nodetype, struct cnfexpr *l, struct cnfexpr *r);
void cnfexprPrint(struct cnfexpr *expr, int indent);
void cnfexprEval(struct cnfexpr *expr, struct exprret *ret, void *pusr);
int cnfexprEvalBool(struct cnfexpr *expr, void *usrptr);
struct cnfnumval* cnfnumvalNew(long long val);
struct cnfstringval* cnfstringvalNew(es_str_t *estr);
struct cnfrule * cnfruleNew(enum cnfFiltType filttype, struct cnfactlst *actlst);
void cnfrulePrint(struct cnfrule *rule);
struct cnfvar* cnfvarNew(char *name);
struct cnffunc * cnffuncNew(es_str_t *fname, struct cnffparamlst* paramlst);
struct cnffparamlst * cnffparamlstNew(struct cnfexpr *expr, struct cnffparamlst *next);
/* debug helper */
void cstrPrint(char *text, es_str_t *estr);
#endif
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