/*
* Process the VALUE-ALIAS command
*
* This allows VALUE mappings to be shared among multiple
* attributes.
*/
static int process_value_alias(const char* fn, const int line, char **argv,
int argc)
{
DICT_ATTR *my_da, *da;
DICT_VALUE *dval;
if (argc != 2) {
fr_strerror_printf("dict_init: %s[%d]: invalid VALUE-ALIAS line",
fn, line);
return -1;
}
my_da = dict_attrbyname(argv[0]);
if (!my_da) {
fr_strerror_printf("dict_init: %s[%d]: ATTRIBUTE \"%s\" does not exist",
fn, line, argv[1]);
return -1;
}
if (my_da->flags.has_value) {
fr_strerror_printf("dict_init: %s[%d]: Cannot add VALUE-ALIAS to ATTRIBUTE \"%s\" with pre-existing VALUE",
fn, line, argv[0]);
return -1;
}
if (my_da->flags.has_value_alias) {
fr_strerror_printf("dict_init: %s[%d]: Cannot add VALUE-ALIAS to ATTRIBUTE \"%s\" with pre-existing VALUE-ALIAS",
fn, line, argv[0]);
return -1;
}
da = dict_attrbyname(argv[1]);
if (!da) {
fr_strerror_printf("dict_init: %s[%d]: Cannot find ATTRIBUTE \"%s\" for alias",
fn, line, argv[1]);
return -1;
}
if (!da->flags.has_value) {
fr_strerror_printf("dict_init: %s[%d]: VALUE-ALIAS cannot refer to ATTRIBUTE %s: It has no values",
fn, line, argv[1]);
return -1;
}
if (da->flags.has_value_alias) {
fr_strerror_printf("dict_init: %s[%d]: Cannot add VALUE-ALIAS to ATTRIBUTE \"%s\" which itself has a VALUE-ALIAS",
fn, line, argv[1]);
return -1;
}
if (my_da->type != da->type) {
fr_strerror_printf("dict_init: %s[%d]: Cannot add VALUE-ALIAS between attributes of differing type",
fn, line);
return -1;
}
if ((dval = fr_pool_alloc(sizeof(*dval))) == NULL) {
fr_strerror_printf("dict_addvalue: out of memory");
return -1;
}
dval->name[0] = '\0'; /* empty name */
dval->attr = my_da->attr;
dval->value = da->attr;
if (!fr_hash_table_insert(values_byname, dval)) {
fr_strerror_printf("dict_init: %s[%d]: Error create alias",
fn, line);
fr_pool_free(dval);
return -1;
}
return 0;
}
/*
* Add an attribute to the dictionary.
*/
int dict_addattr(const char *name, int vendor, int type, int value,
ATTR_FLAGS flags)
{
size_t namelen;
static int max_attr = 0;
const char *p;
DICT_ATTR *attr;
namelen = strlen(name);
if (namelen >= DICT_ATTR_MAX_NAME_LEN) {
fr_strerror_printf("dict_addattr: attribute name too long");
return -1;
}
for (p = name; *p != '\0'; p++) {
if (*p < ' ') {
fr_strerror_printf("dict_addattr: attribute name cannot contain control characters");
return -1;
}
if ((*p == '"') || (*p == '\\')) {
fr_strerror_printf("dict_addattr: attribute name cannot contain quotation or backslash");
return -1;
}
if ((*p == '<') || (*p == '>') || (*p == '&')) {
fr_strerror_printf("dict_addattr: attribute name cannot contain XML control characters");
return -1;
}
}
/*
* If the value is '-1', that means use a pre-existing
* one (if it already exists). If one does NOT already exist,
* then create a new attribute, with a non-conflicting value,
* and use that.
*/
if (value == -1) {
if (dict_attrbyname(name)) {
return 0; /* exists, don't add it again */
}
value = ++max_attr;
} else if (vendor == 0) {
/*
* Update 'max_attr'
*/
if (value > max_attr) {
max_attr = value;
}
}
if (value < 0) {
fr_strerror_printf("dict_addattr: ATTRIBUTE has invalid number (less than zero)");
return -1;
}
if (value >= 65536) {
fr_strerror_printf("dict_addattr: ATTRIBUTE has invalid number (larger than 65535).");
return -1;
}
if (vendor) {
DICT_VENDOR *dv;
static DICT_VENDOR *last_vendor = NULL;
if (flags.is_tlv && (flags.encrypt != FLAG_ENCRYPT_NONE)) {
fr_strerror_printf("Sub-TLV's cannot be encrypted");
return -1;
}
if (flags.has_tlv && (flags.encrypt != FLAG_ENCRYPT_NONE)) {
fr_strerror_printf("TLV's cannot be encrypted");
return -1;
}
if (flags.is_tlv && flags.has_tag) {
fr_strerror_printf("Sub-TLV's cannot have a tag");
return -1;
}
if (flags.has_tlv && flags.has_tag) {
fr_strerror_printf("TLV's cannot have a tag");
return -1;
}
/*
* Most ATTRIBUTEs are bunched together by
* VENDOR. We can save a lot of lookups on
* dictionary initialization by caching the last
* vendor.
*/
if (last_vendor && (vendor == last_vendor->vendorpec)) {
dv = last_vendor;
} else {
dv = dict_vendorbyvalue(vendor);
last_vendor = dv;
}
/*
* If the vendor isn't defined, die.
*/
if (!dv) {
fr_strerror_printf("dict_addattr: Unknown vendor");
return -1;
}
/*
* FIXME: Switch over dv->type, and limit things
* properly.
*/
if ((dv->type == 1) && (value >= 256) && !flags.is_tlv) {
fr_strerror_printf("dict_addattr: ATTRIBUTE has invalid number (larger than 255).");
return -1;
} /* else 256..65535 are allowed */
}
/*
* Create a new attribute for the list
*/
if ((attr = fr_pool_alloc(sizeof(*attr) + namelen)) == NULL) {
fr_strerror_printf("dict_addattr: out of memory");
return -1;
}
memcpy(attr->name, name, namelen);
attr->name[namelen] = '\0';
attr->attr = value;
attr->attr |= (vendor << 16); /* FIXME: hack */
attr->vendor = vendor;
attr->type = type;
attr->flags = flags;
attr->vendor = vendor;
/*
* Insert the attribute, only if it's not a duplicate.
*/
if (!fr_hash_table_insert(attributes_byname, attr)) {
DICT_ATTR *a;
/*
* If the attribute has identical number, then
* ignore the duplicate.
*/
a = fr_hash_table_finddata(attributes_byname, attr);
if (a && (strcasecmp(a->name, attr->name) == 0)) {
if (a->attr != attr->attr) {
fr_strerror_printf("dict_addattr: Duplicate attribute name %s", name);
fr_pool_free(attr);
return -1;
}
/*
* Same name, same vendor, same attr,
* maybe the flags and/or type is
* different. Let the new value
* over-ride the old one.
*/
}
fr_hash_table_delete(attributes_byvalue, a);
if (!fr_hash_table_replace(attributes_byname, attr)) {
fr_strerror_printf("dict_addattr: Internal error storing attribute %s", name);
fr_pool_free(attr);
return -1;
}
}
/*
* Insert the SAME pointer (not free'd when this entry is
* deleted), into another table.
*
* We want this behaviour because we want OLD names for
* the attributes to be read from the configuration
* files, but when we're printing them, (and looking up
* by value) we want to use the NEW name.
*/
if (!fr_hash_table_replace(attributes_byvalue, attr)) {
fr_strerror_printf("dict_addattr: Failed inserting attribute name %s", name);
return -1;
}
if (!vendor && (value > 0) && (value < 256)) {
dict_base_attrs[value] = attr;
}
return 0;
}
/*
* Add a value for an attribute to the dictionary.
*/
int dict_addvalue(const char *namestr, const char *attrstr, int value)
{
size_t length;
DICT_ATTR *dattr;
DICT_VALUE *dval;
static DICT_ATTR *last_attr = NULL;
if (!*namestr) {
fr_strerror_printf("dict_addvalue: empty names are not permitted");
return -1;
}
if ((length = strlen(namestr)) >= DICT_VALUE_MAX_NAME_LEN) {
fr_strerror_printf("dict_addvalue: value name too long");
return -1;
}
if ((dval = fr_pool_alloc(sizeof(*dval) + length)) == NULL) {
fr_strerror_printf("dict_addvalue: out of memory");
return -1;
}
memset(dval, 0, sizeof(*dval));
strcpy(dval->name, namestr);
dval->value = value;
/*
* Most VALUEs are bunched together by ATTRIBUTE. We can
* save a lot of lookups on dictionary initialization by
* caching the last attribute.
*/
if (last_attr && (strcasecmp(attrstr, last_attr->name) == 0)) {
dattr = last_attr;
} else {
dattr = dict_attrbyname(attrstr);
last_attr = dattr;
}
/*
* Remember which attribute is associated with this
* value, if possible.
*/
if (dattr) {
if (dattr->flags.has_value_alias) {
fr_strerror_printf("dict_addvalue: Cannot add VALUE for ATTRIBUTE \"%s\": It already has a VALUE-ALIAS", attrstr);
return -1;
}
dval->attr = dattr->attr;
/*
* Enforce valid values
*
* Don't worry about fixups...
*/
switch (dattr->type) {
case PW_TYPE_BYTE:
if (value > 255) {
fr_pool_free(dval);
fr_strerror_printf("dict_addvalue: ATTRIBUTEs of type 'byte' cannot have VALUEs larger than 255");
return -1;
}
break;
case PW_TYPE_SHORT:
if (value > 65535) {
fr_pool_free(dval);
fr_strerror_printf("dict_addvalue: ATTRIBUTEs of type 'short' cannot have VALUEs larger than 65535");
return -1;
}
break;
/*
* Allow octets for now, because
* of dictionary.cablelabs
*/
case PW_TYPE_OCTETS:
case PW_TYPE_INTEGER:
break;
default:
fr_pool_free(dval);
fr_strerror_printf("dict_addvalue: VALUEs cannot be defined for attributes of type '%s'",
fr_int2str(dict_attr_types, dattr->type, "?Unknown?"));
return -1;
}
dattr->flags.has_value = 1;
} else {
value_fixup_t *fixup;
fixup = (value_fixup_t *) malloc(sizeof(*fixup));
if (!fixup) {
fr_pool_free(dval);
fr_strerror_printf("dict_addvalue: out of memory");
return -1;
}
memset(fixup, 0, sizeof(*fixup));
strncpy(fixup->attrstr, attrstr, sizeof(fixup->attrstr) - 1);
fixup->dval = dval;
/*
* Insert to the head of the list.
*/
fixup->next = value_fixup;
value_fixup = fixup;
return 0;
}
/*
* Add the value into the dictionary.
*/
if (!fr_hash_table_insert(values_byname, dval)) {
if (dattr) {
DICT_VALUE *old;
/*
* Suppress duplicates with the same
* name and value. There are lots in
* dictionary.ascend.
*/
old = dict_valbyname(dattr->attr, namestr);
if (old && (old->value == dval->value)) {
fr_pool_free(dval);
return 0;
}
}
fr_pool_free(dval);
fr_strerror_printf("dict_addvalue: Duplicate value name %s for attribute %s", namestr, attrstr);
return -1;
}
/*
* There are multiple VALUE's, keyed by attribute, so we
* take care of that here.
*/
if (!fr_hash_table_replace(values_byvalue, dval)) {
fr_strerror_printf("dict_addvalue: Failed inserting value %s",
namestr);
return -1;
}
return 0;
}
/*
* Add vendor to the list.
*/
int dict_addvendor(const char *name, int value)
{
size_t length;
DICT_VENDOR *dv;
if (value > 65535) {
fr_strerror_printf("dict_addvendor: Cannot handle vendor ID larger than 65535");
return -1;
}
if ((length = strlen(name)) >= DICT_VENDOR_MAX_NAME_LEN) {
fr_strerror_printf("dict_addvendor: vendor name too long");
return -1;
}
if ((dv = fr_pool_alloc(sizeof(*dv) + length)) == NULL) {
fr_strerror_printf("dict_addvendor: out of memory");
return -1;
}
strcpy(dv->name, name);
dv->vendorpec = value;
dv->type = dv->length = 1; /* defaults */
if (!fr_hash_table_insert(vendors_byname, dv)) {
DICT_VENDOR *old_dv;
old_dv = fr_hash_table_finddata(vendors_byname, dv);
if (!old_dv) {
fr_strerror_printf("dict_addvendor: Failed inserting vendor name %s", name);
return -1;
}
if (old_dv->vendorpec != dv->vendorpec) {
fr_strerror_printf("dict_addvendor: Duplicate vendor name %s", name);
return -1;
}
/*
* Already inserted. Discard the duplicate entry.
*/
fr_pool_free(dv);
return 0;
}
/*
* Insert the SAME pointer (not free'd when this table is
* deleted), into another table.
*
* We want this behaviour because we want OLD names for
* the attributes to be read from the configuration
* files, but when we're printing them, (and looking up
* by value) we want to use the NEW name.
*/
if (!fr_hash_table_replace(vendors_byvalue, dv)) {
fr_strerror_printf("dict_addvendor: Failed inserting vendor %s",
name);
return -1;
}
return 0;
}