/*
* $Id: avpops_parse.c 1525 2007-01-19 10:04:29Z miconda $
*
* Copyright (C) 2004-2006 Voice Sistem SRL
*
* This file is part of Open SIP Express Router (openser).
*
* openser is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* openser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* History:
* ---------
* 2004-10-04 first version (ramona)
* 2004-11-11 DB scheme added (ramona)
* 2004-11-17 aligned to new AVP core global aliases (ramona)
*/
#include <stdlib.h>
#include <ctype.h>
#include "../../ut.h"
#include "../../dprint.h"
#include "../../usr_avp.h"
#include "../../mem/mem.h"
#include "avpops_parse.h"
#define SCHEME_UUID_COL "uuid_col"
#define SCHEME_UUID_COL_LEN (sizeof(SCHEME_UUID_COL)-1)
#define SCHEME_USERNAME_COL "username_col"
#define SCHEME_USERNAME_COL_LEN (sizeof(SCHEME_USERNAME_COL)-1)
#define SCHEME_DOMAIN_COL "domain_col"
#define SCHEME_DOMAIN_COL_LEN (sizeof(SCHEME_DOMAIN_COL)-1)
#define SCHEME_VALUE_COL "value_col"
#define SCHEME_VALUE_COL_LEN (sizeof(SCHEME_VALUE_COL)-1)
#define SCHEME_TABLE "table"
#define SCHEME_TABLE_LEN (sizeof(SCHEME_TABLE)-1)
#define SCHEME_VAL_TYPE "value_type"
#define SCHEME_VAL_TYPE_LEN (sizeof(SCHEME_VAL_TYPE)-1)
#define SCHEME_INT_TYPE "integer"
#define SCHEME_INT_TYPE_LEN (sizeof(SCHEME_INT_TYPE)-1)
#define SCHEME_STR_TYPE "string"
#define SCHEME_STR_TYPE_LEN (sizeof(SCHEME_STR_TYPE)-1)
char *parse_avp_attr(char *s, struct fis_param *attr, char end)
{
unsigned int uint;
str tmp;
/*DBG("s=%p s=%c(%d)\n",s,*s,*s);*/
/* search for type identifier */
if ( s[0] && s[1]==':' )
{
switch (s[0])
{
case 'i':
case 'I':
attr->opd |= AVPOPS_VAL_INT;
break;
case 's':
case 'S':
attr->opd |= AVPOPS_VAL_STR;
break;
default:
LOG(L_ERR,"ERROR:avpops:parse_avp_attr: invalid type '%c'\n",
s[0]);
goto error;
}
s += 2;
}
/* search for the avp name */
tmp.s = s;
while ( *s && *s!=end && !isspace((int)*s)) s++;
tmp.len = s - tmp.s;
if (tmp.len==0)
{
attr->opd |= AVPOPS_VAL_NONE;
} else {
if ( attr->opd&AVPOPS_VAL_INT)
{
/* convert to ID (int) */
if ( str2int( &tmp, &uint)==-1 )
{
LOG(L_ERR,"ERROR:avpops:parse_avp_attr: attribute is not "
"int as type says <%s>\n", tmp.s);
goto error;
}
attr->sval.p.val.s = 0;
attr->sval.p.val.len = (int)uint;
} else {
/* duplicate name as str NULL terminated */
attr->sval.p.val.s = (char*)pkg_malloc(tmp.len + 1);
if (attr->sval.p.val.s==0)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_attr: no more pkg mem\n");
goto error;
}
attr->sval.p.val.len = tmp.len;
memcpy(attr->sval.p.val.s, tmp.s, tmp.len);
attr->sval.p.val.s[attr->sval.p.val.len] = 0;
}
}
return s;
error:
return 0;
}
struct fis_param *avpops_parse_pvar(char *s, int flags)
{
struct fis_param *ap;
char *p;
/* compose the param structure */
ap = (struct fis_param*)pkg_malloc(sizeof(struct fis_param));
if (ap==0)
{
LOG(L_ERR,"ERROR:avpops:avpops_parse_pvar: no more pkg mem\n");
return NULL;
}
memset( ap, 0, sizeof(struct fis_param));
p = xl_parse_spec(s, &ap->sval, flags);
if(p==0)
{
pkg_free(ap);
return NULL;
}
ap->opd |= AVPOPS_VAL_PVAR;
return ap;
}
int parse_avp_db(char *s, struct db_param *dbp, int allow_scheme)
{
unsigned long ul;
str tmp;
str s0;
char have_scheme;
char *p;
char *p0;
unsigned int flags;
tmp.s = s;
/* parse the attribute name - check first if it's not an alias */
p0=strchr(tmp.s, '/');
if(p0!=NULL)
*p0=0;
if ( *s!='$')
{
if(strlen(s)<1)
{
LOG(L_ERR,"ERROR:avops:parse_avp_db: bad param - "
"expected : $avp(name), *, s or i value\n");
return E_UNSPEC;
}
switch(*s) {
case 's': case 'S':
dbp->a.opd = AVPOPS_VAL_NONE|AVPOPS_VAL_STR;
break;
case 'i': case 'I':
dbp->a.opd = AVPOPS_VAL_NONE|AVPOPS_VAL_INT;
break;
case '*': case 'a': case 'A':
dbp->a.opd = AVPOPS_VAL_NONE;
break;
default:
LOG(L_ERR,"ERROR:avops:parse_avp_db: bad param - "
"expected : *, s or i AVP flag\n");
return E_UNSPEC;
}
/* flags */
flags = 0;
if(*(s+1)!='\0')
{
s0.s = s+1;
s0.len = strlen(s0.s);
if(str2int(&s0, &flags)!=0)
{
LOG(L_ERR, "ERROR:avops:parse_avp_db:: error - bad avp flags\n");
goto error;
}
}
dbp->a.sval.flags |= flags<<24;
} else {
p = xl_parse_spec(s, &dbp->a.sval,
XL_THROW_ERROR|XL_DISABLE_MULTI|XL_DISABLE_COLORS);
if (p==0 || *p!='\0' || dbp->a.sval.type!=XL_AVP)
{
LOG(L_ERR,"ERROR:avops:parse_avp_db: bad param - "
"expected : $avp(name) or int/str value\n");
return E_UNSPEC;
}
if(dbp->a.sval.flags&XL_DPARAM)
{
dbp->a.opd = AVPOPS_VAL_PVAR;
} else {
dbp->a.opd = (dbp->a.sval.p.val.s)?AVPOPS_VAL_STR:AVPOPS_VAL_INT;
}
}
/* optimize and keep the attribute name as str also to
* speed up db querie builds */
if (!(dbp->a.opd&AVPOPS_VAL_PVAR) && !(dbp->a.opd&AVPOPS_VAL_NONE))
{
if (dbp->a.opd&AVPOPS_VAL_STR)
{
dbp->sa = dbp->a.sval.p.val;
dbp->sa.s[dbp->sa.len] = '\0';
} else {
ul = (unsigned long)dbp->a.sval.p.val.len;
tmp.s = int2str( ul, &(tmp.len) );
dbp->sa.s = (char*)pkg_malloc( tmp.len + 1 );
if (dbp->sa.s==0)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_db: no more pkg mem\n");
goto error;
}
memcpy( dbp->sa.s, tmp.s, tmp.len);
dbp->sa.len = tmp.len;
dbp->sa.s[dbp->sa.len] = 0;
}
}
/* restore '/' */
if(p0)
*p0 = '/';
/* is there a table name ? */
s = p0;
if (s && *s)
{
s++;
if (*s=='$')
{
if (allow_scheme==0)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_db: function doesn't "
"support DB schemes\n");
goto error;
}
if (dbp->a.opd&AVPOPS_VAL_NONE)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_db: inconsistent usage of "
"DB scheme without complet specification of AVP name\n");
goto error;
}
have_scheme = 1;
s++;
} else {
have_scheme = 0;
}
tmp.s = s;
tmp.len = 0;
while ( *s ) s++;
tmp.len = s - tmp.s;
if (tmp.len==0)
{
LOG(L_ERR,"ERROR:avpops:parse_av_dbp: empty scheme/table name\n");
goto error;
}
if (have_scheme)
{
dbp->scheme = avp_get_db_scheme( tmp.s );
if (dbp->scheme==0)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_db: scheme <%s> not found\n",
tmp.s);
goto error;
}
/* update scheme flags with AVP name type*/
dbp->scheme->db_flags|=dbp->a.opd&AVPOPS_VAL_STR?AVP_NAME_STR:0;
} else {
/* duplicate table as str NULL terminated */
dbp->table = (char*)pkg_malloc( tmp.len + 1 );
if (dbp->table==0)
{
LOG(L_ERR,"ERROR:avpops:parse_avp_db: no more pkg mem\n");
goto error;;
}
memcpy( dbp->table, tmp.s, tmp.len);
dbp->table[tmp.len] = 0;
}
}
return 0;
error:
return -1;
}
struct fis_param* parse_intstr_value(char *p, int len)
{
struct fis_param *vp;
unsigned int uint;
str val_str;
int flags;
if (p==0 || len==0)
goto error;
if (len>1 && *(p+1)==':')
{
if (*p=='i' || *p=='I')
flags = AVPOPS_VAL_INT;
else if (*p=='s' || *p=='S')
flags = AVPOPS_VAL_STR;
else
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: unknown value type "
"<%c>\n",*p);
goto error;
}
p += 2;
len -= 2;
if (*p==0 || len<=0 )
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: parse error arround "
"<%.*s>\n",len,p);
goto error;
}
} else {
flags = AVPOPS_VAL_STR;
}
/* get the value */
vp = (struct fis_param*)pkg_malloc(sizeof(struct fis_param));
if (vp==0)
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: no more pkg mem\n");
goto error;;
}
memset( vp, 0, sizeof(struct fis_param));
vp->opd = flags;
val_str.s = p;
val_str.len = len;
if (flags&AVPOPS_VAL_INT) {
/* convert the value to integer */
if(val_str.len>2 && p[0]=='0' && (p[1]=='x' || p[1]=='X'))
{
if(hexstr2int(val_str.s+2, val_str.len-2, &uint))
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: value is not hex"
" int as type says <%.*s>\n", val_str.len, val_str.s);
goto error;
}
} else {
if(str2sint( &val_str, (int*)&uint)==-1)
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: value is not int"
" as type says <%.*s>\n", val_str.len, val_str.s);
goto error;
}
}
vp->sval.p.val.len = (int)uint;
} else {
/* duplicate the value as string */
vp->sval.p.val.s = (char*)pkg_malloc((val_str.len+1)*sizeof(char));
if (vp->sval.p.val.s==0)
{
LOG(L_ERR,"ERROR:avpops:parse_intstr_value: no more pkg mem\n");
goto error;
}
vp->sval.p.val.len = val_str.len;
memcpy(vp->sval.p.val.s, val_str.s, val_str.len);
vp->sval.p.val.s[vp->sval.p.val.len] = 0;
}
return vp;
error:
return 0;
}
#define duplicate_str(_p, _str, _error) \
do { \
_p = (char*)pkg_malloc(_str.len+1); \
if (_p==0) \
{ \
LOG(L_ERR,"ERROR:avpops:parse_avp_sb_scheme: " \
"no more pkg memory\n");\
goto _error; \
} \
memcpy( _p, _str.s, _str.len); \
_p[_str.len] = 0; \
}while(0)
int parse_avp_db_scheme( char *s, struct db_scheme *scheme)
{
str foo;
str bar;
char *p;
if (s==0 || *s==0)
goto error;
p = s;
/*parse the name */
while (*p && isspace((int)*p)) p++;
foo.s = p;
while (*p && *p!=':' && !isspace((int)*p)) p++;
if (foo.s==p || *p==0)
/* missing name or empty scheme */
goto parse_error;
foo.len = p - foo.s;
/* dulicate it */
duplicate_str( scheme->name, foo, error);
/* parse the ':' separator */
while (*p && isspace((int)*p)) p++;
if (*p!=':')
goto parse_error;
p++;
while (*p && isspace((int)*p)) p++;
if (*p==0)
goto parse_error;
/* set as default value type string */
scheme->db_flags = AVP_VAL_STR;
/* parse the attributes */
while (*p)
{
/* get the attribute name */
foo.s = p;
while (*p && *p!='=' && !isspace((int)*p)) p++;
if (p==foo.s || *p==0)
/* missing attribute name */
goto parse_error;
foo.len = p - foo.s;
/* parse the '=' separator */
while (*p && isspace((int)*p)) p++;
if (*p!='=')
goto parse_error;
p++;
while (*p && isspace((int)*p)) p++;
if (*p==0)
goto parse_error;
/* parse the attribute value */
bar.s = p;
while (*p && *p!=';' && !isspace((int)*p)) p++;
if (p==bar.s)
/* missing attribute value */
goto parse_error;
bar.len = p - bar.s;
/* parse the ';' separator, if any */
while (*p && isspace((int)*p)) p++;
if (*p!=0 && *p!=';')
goto parse_error;
if (*p==';') p++;
while (*p && isspace((int)*p)) p++;
/* identify the attribute */
if ( foo.len==SCHEME_UUID_COL_LEN &&
!strncasecmp( foo.s, SCHEME_UUID_COL, foo.len) )
{
duplicate_str( scheme->uuid_col, bar, error);
} else
if ( foo.len==SCHEME_USERNAME_COL_LEN &&
!strncasecmp( foo.s, SCHEME_USERNAME_COL, foo.len) )
{
duplicate_str( scheme->username_col, bar, error);
} else
if ( foo.len==SCHEME_DOMAIN_COL_LEN &&
!strncasecmp( foo.s, SCHEME_DOMAIN_COL, foo.len) )
{
duplicate_str( scheme->domain_col, bar, error);
} else
if ( foo.len==SCHEME_VALUE_COL_LEN &&
!strncasecmp( foo.s, SCHEME_VALUE_COL, foo.len) )
{
duplicate_str( scheme->value_col, bar, error);
} else
if ( foo.len==SCHEME_TABLE_LEN &&
!strncasecmp( foo.s, SCHEME_TABLE, foo.len) )
{
duplicate_str( scheme->table, bar, error);
} else
if ( foo.len==SCHEME_VAL_TYPE_LEN &&
!strncasecmp( foo.s, SCHEME_VAL_TYPE, foo.len) )
{
if ( bar.len==SCHEME_INT_TYPE_LEN &&
!strncasecmp( bar.s, SCHEME_INT_TYPE, bar.len) )
scheme->db_flags &= (~AVP_VAL_STR);
else if ( bar.len==SCHEME_STR_TYPE_LEN &&
!strncasecmp( bar.s, SCHEME_STR_TYPE, bar.len) )
scheme->db_flags = AVP_VAL_STR;
else
{
LOG(L_ERR,"ERROR:avpops:parse_avp_sb_scheme: unknown "
"value type <%.*s>\n",bar.len,bar.s);
goto error;
}
} else {
LOG(L_ERR,"ERROR:avpops:parse_avp_sb_scheme: unknown "
"attribute <%.*s>\n",foo.len,foo.s);
goto error;
}
} /* end while */
return 0;
parse_error:
LOG(L_ERR,"ERROR:avpops:parse_avp_sb_scheme: parse error in <%s> "
"around %ld\n", s, (long)(p-s));
error:
return -1;
}
struct fis_param* parse_check_value(char *s)
{
struct fis_param *vp;
int ops;
int opd;
char *p;
char *t;
int len;
ops = 0;
opd = 0;
vp = 0;
if ( (p=strchr(s,'/'))==0 || (p-s!=2&&p-s!=3) )
goto parse_error;
/* get the operation */
if (strncasecmp(s,"eq",2)==0) {
ops |= AVPOPS_OP_EQ;
} else if (strncasecmp(s,"ne",2)==0) {
ops |= AVPOPS_OP_NE;
} else if (strncasecmp(s,"lt",2)==0) {
ops |= AVPOPS_OP_LT;
} else if (strncasecmp(s,"le",2)==0) {
ops |= AVPOPS_OP_LE;
} else if (strncasecmp(s,"gt",2)==0) {
ops |= AVPOPS_OP_GT;
} else if (strncasecmp(s,"ge",2)==0) {
ops |= AVPOPS_OP_GE;
} else if (strncasecmp(s,"re",2)==0) {
ops |= AVPOPS_OP_RE;
} else if (strncasecmp(s,"fm",2)==0) {
ops |= AVPOPS_OP_FM;
} else if (strncasecmp(s,"and",3)==0) {
ops |= AVPOPS_OP_BAND;
} else if (strncasecmp(s,"or",2)==0) {
ops |= AVPOPS_OP_BOR;
} else if (strncasecmp(s,"xor",3)==0) {
ops |= AVPOPS_OP_BXOR;
} else {
LOG(L_ERR,"ERROR:avpops:parse_check_value: unknown operation "
"<%.*s>\n",2,s);
goto error;
}
/* get the value */
if (*(++p)==0)
goto parse_error;
if ( (t=strchr(p,'/'))==0)
len = strlen(p);
else
len = t-p;
if (*p=='$')
{
/* is variable */
vp = avpops_parse_pvar(p, XL_THROW_ERROR|XL_DISABLE_COLORS);
if (vp==0)
{
LOG(L_ERR,"ERROR:avpops:parse_check_value: unable to get"
" pseudo-variable\n");
goto error;
}
if (vp->sval.type==XL_NULL)
{
LOG(L_ERR,"ERROR:avops:parse_check_value: bad param; "
"expected : $pseudo-variable or int/str value\n");
goto error;
}
opd |= AVPOPS_VAL_PVAR;
DBG("flag==%d/%d\n", opd, ops);
} else {
/* value is explicitly given */
if ( (vp=parse_intstr_value(p,len))==0) {
LOG(L_ERR,"ERROR:avpops:parse_check_value: unable to "
"parse value\n");
goto error;
}
}
p = t;
/* any flags */
if (p!=NULL && *p!=0)
{
if (*p!='/' || *(++p)==0)
goto parse_error;
while (*p)
{
switch (*p)
{
case 'g':
case 'G':
ops|=AVPOPS_FLAG_ALL;
break;
case 'i':
case 'I':
ops|=AVPOPS_FLAG_CI;
break;
default:
LOG(L_ERR,"ERROR:avpops:parse_check_value: unknown flag "
"<%c>\n",*p);
goto error;
}
p++;
}
}
vp->ops |= ops;
vp->opd |= opd;
return vp;
parse_error:
LOG(L_ERR,"ERROR:avpops:parse_check_value: parse error in <%s> pos %ld\n",
s,(long)(p-s));
error:
if (vp) pkg_free(vp);
return 0;
}
struct fis_param* parse_op_value(char *s)
{
struct fis_param *vp;
int ops;
int opd;
char *p;
char *t;
int len;
ops = 0;
opd = 0;
vp = 0;
if ( (p=strchr(s,'/'))==0 || (p-s!=2&&p-s!=3) )
goto parse_error;
/* get the operation */
if (strncasecmp(s,"add",3)==0) {
ops |= AVPOPS_OP_ADD;
} else if (strncasecmp(s,"sub",3)==0) {
ops |= AVPOPS_OP_SUB;
} else if (strncasecmp(s,"mul",3)==0) {
ops |= AVPOPS_OP_MUL;
} else if (strncasecmp(s,"div",3)==0) {
ops |= AVPOPS_OP_DIV;
} else if (strncasecmp(s,"mod",3)==0) {
ops |= AVPOPS_OP_MOD;
} else if (strncasecmp(s,"and",3)==0) {
ops |= AVPOPS_OP_BAND;
} else if (strncasecmp(s,"or",2)==0) {
ops |= AVPOPS_OP_BOR;
} else if (strncasecmp(s,"xor",3)==0) {
ops |= AVPOPS_OP_BXOR;
} else if (strncasecmp(s,"not",3)==0) {
ops |= AVPOPS_OP_BNOT;
} else {
LOG(L_ERR,"ERROR:avpops:parse_op_value: unknown operation "
"<%.*s>\n",2,s);
goto error;
}
/* get the value */
if (*(++p)==0)
goto parse_error;
if ( (t=strchr(p,'/'))==0)
len = strlen(p);
else
len = t-p;
if (*p=='$')
{
/* is variable */
vp = avpops_parse_pvar(p, XL_THROW_ERROR|XL_DISABLE_COLORS);
if (vp==0)
{
LOG(L_ERR,"ERROR:avpops:parse_op_value: unable to get"
" pseudo-variable\n");
goto error;
}
if (vp->sval.type==XL_NULL)
{
LOG(L_ERR,"ERROR:avops:parse_op_value: bad param; "
"expected : $pseudo-variable or int/str value\n");
goto error;
}
opd |= AVPOPS_VAL_PVAR;
DBG("avops:parse_op_value: flag==%d/%d\n", opd, ops);
} else {
/* value is explicitly given */
if ( (vp=parse_intstr_value(p,len))==0) {
LOG(L_ERR,"ERROR:avpops:parse_op_value: unable to parse value\n");
goto error;
}
if((vp->opd&AVPOPS_VAL_INT)==0) {
LOG(L_ERR,"ERROR:avpops:parse_op_value: value must be int\n");
goto error;
}
}
/* any flags */
p = t;
if (p!=0 && *p!=0 )
{
if (*p!='/' || *(++p)==0)
goto parse_error;
while (*p)
{
switch (*p)
{
case 'g':
case 'G':
ops|=AVPOPS_FLAG_ALL;
break;
case 'd':
case 'D':
ops|=AVPOPS_FLAG_DELETE;
break;
default:
LOG(L_ERR,"ERROR:avpops:parse_op_value: unknown flag "
"<%c>\n",*p);
goto error;
}
p++;
}
}
vp->ops |= ops;
vp->opd |= opd;
return vp;
parse_error:
LOG(L_ERR,"ERROR:avpops:parse_op_value: parse error in <%s> pos %ld\n",
s,(long)(p-s));
error:
if (vp) pkg_free(vp);
return 0;
}
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