/** Make a new attribute-value pair with given parameters
*
* @param rh a handle to parsed configuration.
* @param attrid The attribute of the pair to add (e.g., %PW_USER_NAME).
* @param pval the value (e.g., the actual username).
* @param len the length of pval, or -1 if to calculate (in case of strings).
* @param vendorpec The vendor ID in case of a vendor specific value - 0 otherwise.
* @return pointer to generated a/v pair when successful, NULL when failure.
*/
VALUE_PAIR *rc_avpair_new (rc_handle const *rh, int attrid, void const *pval, int len, int vendorpec)
{
VALUE_PAIR *vp = NULL;
DICT_ATTR *pda;
attrid = attrid | (vendorpec << 16);
if ((pda = rc_dict_getattr (rh, attrid)) == NULL)
{
rc_log(LOG_ERR,"rc_avpair_new: unknown attribute %d", attrid);
return NULL;
}
if (vendorpec != 0 && rc_dict_getvend(rh, vendorpec) == NULL)
{
rc_log(LOG_ERR,"rc_avpair_new: unknown Vendor-Id %d", vendorpec);
return NULL;
}
if ((vp = malloc (sizeof (VALUE_PAIR))) != NULL)
{
strlcpy (vp->name, pda->name, sizeof (vp->name));
vp->attribute = attrid;
vp->next = NULL;
vp->type = pda->type;
if (rc_avpair_assign (vp, pval, len) == 0)
{
/* XXX: Fix up Digest-Attributes */
switch (vp->attribute) {
case PW_DIGEST_REALM:
case PW_DIGEST_NONCE:
case PW_DIGEST_METHOD:
case PW_DIGEST_URI:
case PW_DIGEST_QOP:
case PW_DIGEST_ALGORITHM:
case PW_DIGEST_BODY_DIGEST:
case PW_DIGEST_CNONCE:
case PW_DIGEST_NONCE_COUNT:
case PW_DIGEST_USER_NAME:
/* overlapping! */
if (vp->lvalue > AUTH_STRING_LEN - 2)
vp->lvalue = AUTH_STRING_LEN - 2;
memmove(&vp->strvalue[2], &vp->strvalue[0], vp->lvalue);
vp->strvalue[0] = vp->attribute - PW_DIGEST_REALM + 1;
vp->lvalue += 2;
vp->strvalue[1] = vp->lvalue;
vp->strvalue[vp->lvalue] = '\0';
vp->attribute = PW_DIGEST_ATTRIBUTES;
default:
break;
}
return vp;
}
free (vp);
vp = NULL;
}
else
{
rc_log(LOG_CRIT,"rc_avpair_new: out of memory");
}
return vp;
}
/** Takes attribute/value pairs from buffer and builds a value_pair list using allocated memory
*
* @note Uses recursion.
*
* @param rh a handle to parsed configuration.
* @param pair a pointer to a #VALUE_PAIR structure.
* @param ptr the value (e.g., the actual username).
* @param length the length of ptr, or -1 if to calculate (in case of strings).
* @param vendorpec The vendor ID in case of a vendor specific value - 0 otherwise.
* @return value_pair list or %NULL on failure.
*/
VALUE_PAIR *rc_avpair_gen(rc_handle const *rh, VALUE_PAIR *pair, unsigned char const *ptr,
int length, int vendorpec)
{
int attribute, attrlen, x_len;
unsigned char const *x_ptr;
uint32_t lvalue;
DICT_ATTR *attr;
VALUE_PAIR *rpair;
char buffer[(AUTH_STRING_LEN * 2) + 1];
/* For hex string conversion. */
char hex[3];
if (length < 2) {
rc_log(LOG_ERR, "rc_avpair_gen: received attribute with "
"invalid length");
goto shithappens;
}
attrlen = ptr[1];
if (length < attrlen || attrlen < 2) {
rc_log(LOG_ERR, "rc_avpair_gen: received attribute with "
"invalid length");
goto shithappens;
}
/* Advance to the next attribute and process recursively */
if (length != attrlen) {
pair = rc_avpair_gen(rh, pair, ptr + attrlen, length - attrlen,
vendorpec);
if (pair == NULL)
return NULL;
}
/* Actual processing */
attribute = ptr[0] | (vendorpec << 16);
ptr += 2;
attrlen -= 2;
/* VSA */
if (attribute == PW_VENDOR_SPECIFIC) {
if (attrlen < 4) {
rc_log(LOG_ERR, "rc_avpair_gen: received VSA "
"attribute with invalid length");
goto skipit;
}
memcpy(&lvalue, ptr, 4);
vendorpec = ntohl(lvalue);
if (rc_dict_getvend(rh, vendorpec) == NULL) {
/* Warn and skip over the unknown VSA */
rc_log(LOG_WARNING, "rc_avpair_gen: received VSA "
"attribute with unknown Vendor-Id %d", vendorpec);
goto skipit;
}
/* Process recursively */
return rc_avpair_gen(rh, pair, ptr + 4, attrlen - 4,
vendorpec);
}
/* Normal */
attr = rc_dict_getattr(rh, attribute);
if (attr == NULL) {
buffer[0] = '\0'; /* Initial length. */
x_ptr = ptr;
for (x_len = attrlen; x_len > 0; x_len--, x_ptr++) {
snprintf(hex, sizeof(hex), "%2.2X", x_ptr[0]);
strcat(buffer, hex);
}
if (vendorpec == 0) {
rc_log(LOG_WARNING, "rc_avpair_gen: received "
"unknown attribute %d of length %d: 0x%s",
attribute, attrlen + 2, buffer);
} else {
rc_log(LOG_WARNING, "rc_avpair_gen: received "
"unknown VSA attribute %d, vendor %d of "
"length %d: 0x%s", attribute & 0xffff,
VENDOR(attribute), attrlen + 2, buffer);
}
goto skipit;
}
rpair = malloc(sizeof(*rpair));
if (rpair == NULL) {
rc_log(LOG_CRIT, "rc_avpair_gen: out of memory");
goto shithappens;
}
memset(rpair, '\0', sizeof(*rpair));
/* Insert this new pair at the beginning of the list */
rpair->next = pair;
pair = rpair;
strcpy(pair->name, attr->name);
pair->attribute = attr->value;
pair->type = attr->type;
switch (attr->type) {
case PW_TYPE_STRING:
memcpy(pair->strvalue, (char *)ptr, (size_t)attrlen);
pair->strvalue[attrlen] = '\0';
pair->lvalue = attrlen;
break;
case PW_TYPE_INTEGER:
if (attrlen != 4) {
rc_log(LOG_ERR, "rc_avpair_gen: received INT "
"attribute with invalid length");
goto skipit;
}
case PW_TYPE_IPADDR:
if (attrlen != 4) {
rc_log(LOG_ERR, "rc_avpair_gen: received IPADDR"
" attribute with invalid length");
goto skipit;
}
memcpy((char *)&lvalue, (char *)ptr, 4);
pair->lvalue = ntohl(lvalue);
break;
case PW_TYPE_IPV6ADDR:
if (attrlen != 16) {
rc_log(LOG_ERR, "rc_avpair_gen: received IPV6ADDR"
" attribute with invalid length");
goto skipit;
}
memcpy(pair->strvalue, (char *)ptr, 16);
pair->lvalue = attrlen;
break;
case PW_TYPE_IPV6PREFIX:
if (attrlen > 18 || attrlen < 2) {
rc_log(LOG_ERR, "rc_avpair_gen: received IPV6PREFIX"
" attribute with invalid length: %d", attrlen);
goto skipit;
}
memcpy(pair->strvalue, (char *)ptr, attrlen);
pair->lvalue = attrlen;
break;
case PW_TYPE_DATE:
if (attrlen != 4) {
rc_log(LOG_ERR, "rc_avpair_gen: received DATE "
"attribute with invalid length");
goto skipit;
}
default:
rc_log(LOG_WARNING, "rc_avpair_gen: %s has unknown type",
attr->name);
goto skipit;
}
skipit:
return pair;
shithappens:
while (pair != NULL) {
rpair = pair->next;
free(pair);
pair = rpair;
}
return NULL;
}
int radius_auth(switch_channel_t *channel, char* called_number, char* username, char* password , char* auth_result/*, char* biling_model, char* credit_amount, char* currency, char* preffered_lang*/)
{
int result = OK_RC;
VALUE_PAIR *send = NULL;
VALUE_PAIR *received = NULL;
VALUE_PAIR *service_vp;
DICT_ATTR *pda;
CONFIG_VSAS* PCONFIGVSAS = NULL;
char *default_realm = NULL;
rc_handle *rh = NULL;
int attrid =0;
char msg[STR_LENGTH * 10 + 1];
char username_realm[STR_LENGTH + 1];
char value[STR_LENGTH + 1];
int integer;
memset(msg, 0, STR_LENGTH * 10);
memset(username_realm, 0, STR_LENGTH);
send = NULL;
do
{
#if EMBENDED_CONFIG
CONFIG_CLIENT* PCONFIGCLIENT = CONFIGCLIENT;
rh = rc_new();
if (rh == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "ERROR: Failed to allocate initial structure.\n");
result = ERROR_RC;
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "allocate initial structure.\n");
/* Initialize the config structure */
rh = rc_config_init(rh);
if (rh == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,"ERROR: Failed to initialze configuration.\n");
result = ERROR_RC;
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,"initialzed configuration.\n");
while(PCONFIGCLIENT)
{
//if (rc_add_config(rh, "auth_order", "radius", "config", 0) != 0)
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "set %s := %s.\n", PCONFIGCLIENT->name, PCONFIGCLIENT->value);
if (rc_add_config(rh, PCONFIGCLIENT->name, PCONFIGCLIENT->value, "config", 0) != 0)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "ERROR: Unable to set %s := %s.\n", PCONFIGCLIENT->name, PCONFIGCLIENT->value);
result = ERROR_RC;
break;
}
PCONFIGCLIENT = PCONFIGCLIENT->pNext;
}
if (result == ERROR_RC)
break;
#else
if ((rh = rc_read_config(!rc_config_file ? RC_CONFIG_FILE : rc_config_file)) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error loading radius config file\n");
result = ERROR_RC;
break;
}
#endif
if (rc_read_dictionary(rh, rc_conf_str(rh, "dictionary")) != 0)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error loading radius dictionary\n");
result = ERROR_RC;
break;
}
default_realm = rc_conf_str(rh, "default_realm");
if (default_realm == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "default_realm is null object.\n");
result = ERROR_RC;
break;
}
strncpy(username_realm, username, sizeof(username_realm));
if ((strchr(username_realm, '@') == NULL) && default_realm &&
(*default_realm != '\0'))
{
strncat(username_realm, "@", sizeof(username_realm)-strlen(username_realm)-1);
strncat(username_realm, default_realm, sizeof(username_realm)-strlen(username_realm)-1);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"... radius: User-Name: %s\n", username);
if (rc_avpair_add(rh, &send, PW_USER_NAME, username_realm, -1, 0)== NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : username\n");
result = ERROR_RC;
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"... radius: User-Password: %s\n", password);
if (rc_avpair_add(rh, &send, PW_USER_PASSWORD, password, -1, 0) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : password\n");
result = ERROR_RC;
break;
}
if (!called_number || strcmp(called_number, "") == 0)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"... radius: Called-station-Id is empty, ignoring...\n");
}
else
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"... radius: Called-station-Id: %s\n", called_number);
if (rc_avpair_add(rh, &send, 30, called_number, -1, 0) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : Called-station-Id\n");
result = ERROR_RC;
break;
}
}
PCONFIGVSAS = CONFIGVSAS;
while(PCONFIGVSAS)
{
if (PCONFIGVSAS->direction == 1)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Handle attribute: %s\n", PCONFIGVSAS->name );
memset(value, 0, STR_LENGTH);
GetValue(channel, PCONFIGVSAS, value);
if (PCONFIGVSAS->pec != 0)
attrid = PCONFIGVSAS->id | (PCONFIGVSAS->pec << 16);
else
attrid = PCONFIGVSAS->id ;
pda = rc_dict_getattr(rh, attrid);
if (pda == NULL)
{
result = ERROR_RC;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown attribute: key:%s, not found in dictionary\n", PCONFIGVSAS->name);
break;
}
if (PCONFIGVSAS->pec != 0 && rc_dict_getvend(rh, PCONFIGVSAS->pec) == NULL)
{
result = ERROR_RC;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown vendor specific id: key:%s, id:%dnot found in dictionary\n", PCONFIGVSAS->name, PCONFIGVSAS->pec);
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "... dictionary data: id:%d, vendor id:%d, attr type:%d, attr name:%s (%d)\n", PCONFIGVSAS->id, PCONFIGVSAS->pec, pda->type, pda->name, attrid);
switch(pda->type)
{
case PW_TYPE_STRING:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "... radius: key:%s, value:%s (%s) as string\n", PCONFIGVSAS->name, PCONFIGVSAS->value, value);
if (rc_avpair_add(rh, &send, PCONFIGVSAS->id, value, -1, PCONFIGVSAS->pec) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : %s\n", PCONFIGVSAS->name);
result = ERROR_RC;
break;
}
break;
//case PW_TYPE_DATE:
case PW_TYPE_INTEGER:
integer = atoi(value);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "... radius: key:%s, value:%s (%d) as integer\n", PCONFIGVSAS->name, PCONFIGVSAS->value, integer);
if (rc_avpair_add(rh, &send, PCONFIGVSAS->id, &integer, -1, PCONFIGVSAS->pec) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : %s\n", PCONFIGVSAS->name);
result = ERROR_RC;
break;
}
break;
case PW_TYPE_IPADDR:
integer = rc_get_ipaddr(value);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "... radius: key:%s, value:%s (%d) as ipaddr\n", PCONFIGVSAS->name, PCONFIGVSAS->value, integer);
if (rc_avpair_add(rh, &send, PCONFIGVSAS->id, &integer, -1, PCONFIGVSAS->pec) == NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "An Error occured during rc_avpair_add : %s\n", PCONFIGVSAS->name);
result = ERROR_RC;
break;
}
break;
default:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown attribute type: key:%s, type %d\n", PCONFIGVSAS->name, pda->type);
break;
}
}
PCONFIGVSAS = PCONFIGVSAS->pNext;
}
if (result != ERROR_RC)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "sending radius packet ...\n" );
result = rc_auth(rh, 0, send, &received, msg);
if (result == OK_RC)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"RADIUS Authentication OK\n");
strcpy(auth_result, "OK");
}
else
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
" RADIUS Authentication failure (RC=%d)\n",
result);
strcpy(auth_result, "NOK");
}
PCONFIGVSAS = CONFIGVSAS;
while(PCONFIGVSAS)
{
if (PCONFIGVSAS->direction == 0)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Handle attribute: %s\n", PCONFIGVSAS->name );
if ((service_vp = rc_avpair_get(received, PCONFIGVSAS->id, PCONFIGVSAS->pec)) != NULL)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "\tattribute (%s) found in radius packet\n", PCONFIGVSAS->name);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "\tset variable %s := %s\n", PCONFIGVSAS->value, service_vp->strvalue);
switch_channel_set_variable(channel, PCONFIGVSAS->value, service_vp->strvalue);
}
else
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "\tNo found out attribute id: %d, pec:%d, (%s)\n", PCONFIGVSAS->id, PCONFIGVSAS->pec, PCONFIGVSAS->name );
}
}
PCONFIGVSAS = PCONFIGVSAS->pNext;
}
}
else
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "abort sending radius packet.\n" );
break;
}
} while(1 == 0);
if (result == ERROR_RC)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
"An error occured during RADIUS Authentication(RC=%d)\n",
result);
}
free_radius_auth_value_pair(send, received, rh);
return result;
}
