WIP: Volte support for outgoing SIP registration
This commit is contained in:
parent
ac6c9d5f70
commit
ce602d5264
|
@ -61,6 +61,7 @@ $(call MOD_ADD_C,res_snmp,snmp/agent.c)
|
|||
$(call MOD_ADD_C,res_parking,$(wildcard parking/*.c))
|
||||
$(call MOD_ADD_C,res_pjsip,$(wildcard res_pjsip/*.c))
|
||||
$(call MOD_ADD_C,res_pjsip_session,$(wildcard res_pjsip_session/*.c))
|
||||
$(call MOD_ADD_C,res_pjsip_outbound_registration,$(wildcard res_pjsip_outbound_registration/*.c))
|
||||
$(call MOD_ADD_C,res_prometheus,$(wildcard prometheus/*.c))
|
||||
$(call MOD_ADD_C,res_ari,ari/cli.c ari/config.c ari/ari_websockets.c)
|
||||
$(call MOD_ADD_C,res_ari_model,ari/ari_model_validators.c)
|
||||
|
|
|
@ -40,6 +40,7 @@
|
|||
#include "res_pjsip/include/res_pjsip_private.h"
|
||||
#include "asterisk/vector.h"
|
||||
#include "asterisk/pbx.h"
|
||||
#include "res_pjsip_outbound_registration/volte.h"
|
||||
|
||||
/*** DOCUMENTATION
|
||||
<configInfo name="res_pjsip_outbound_registration" language="en_US">
|
||||
|
@ -212,6 +213,9 @@
|
|||
<configOption name="user_agent">
|
||||
<synopsis>Overrides the User-Agent header that should be used for outbound REGISTER requests.</synopsis>
|
||||
</configOption>
|
||||
<configOption name="volte">
|
||||
<synopsis>Perform Voice over LTE SIP registration process.</synopsis>
|
||||
</configOption>
|
||||
</configObject>
|
||||
</configFile>
|
||||
</configInfo>
|
||||
|
@ -373,6 +377,8 @@ struct sip_outbound_registration {
|
|||
unsigned int support_path;
|
||||
/*! \brief Whether Outbound support is enabled */
|
||||
unsigned int support_outbound;
|
||||
/*! \brief VoLTE support */
|
||||
unsigned int volte;
|
||||
};
|
||||
|
||||
/*! \brief Outbound registration client state information (persists for lifetime of regc) */
|
||||
|
@ -440,6 +446,8 @@ struct sip_outbound_registration_client_state {
|
|||
unsigned int registration_expires;
|
||||
/*! \brief The value for the User-Agent header sent in requests */
|
||||
char *user_agent;
|
||||
/*! \brief VoLTE support */
|
||||
unsigned int volte;
|
||||
};
|
||||
|
||||
/*! \brief Outbound registration state information (persists for lifetime that registration should exist) */
|
||||
|
@ -1578,6 +1586,7 @@ static struct sip_outbound_registration_state *sip_outbound_registration_state_a
|
|||
state->client_state->registration_name =
|
||||
ast_strdup(ast_sorcery_object_get_id(registration));
|
||||
state->client_state->user_agent = ast_strdup(registration->user_agent);
|
||||
state->client_state->volte = registration->volte;
|
||||
|
||||
ast_statsd_log_string("PJSIP.registrations.count", AST_STATSD_GAUGE, "+1", 1.0);
|
||||
ast_statsd_log_string_va("PJSIP.registrations.state.%s", AST_STATSD_GAUGE, "+1", 1.0,
|
||||
|
@ -2836,6 +2845,7 @@ static int load_module(void)
|
|||
ast_sorcery_object_field_register(ast_sip_get_sorcery(), "registration", "line", "no", OPT_BOOL_T, 1, FLDSET(struct sip_outbound_registration, line));
|
||||
ast_sorcery_object_field_register(ast_sip_get_sorcery(), "registration", "endpoint", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct sip_outbound_registration, endpoint));
|
||||
ast_sorcery_object_field_register(ast_sip_get_sorcery(), "registration", "user_agent", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct sip_outbound_registration, user_agent));
|
||||
ast_sorcery_object_field_register(ast_sip_get_sorcery(), "registration", "volte", "no", OPT_BOOL_T, 1, FLDSET(struct sip_outbound_registration, volte));
|
||||
|
||||
/*
|
||||
* Register sorcery observers.
|
||||
|
|
|
@ -0,0 +1,347 @@
|
|||
/*
|
||||
* 3GPP AKA - Milenage algorithm (3GPP TS 35.205, .206, .207, .208)
|
||||
* Copyright (c) 2006-2007 <j@w1.fi>
|
||||
*
|
||||
* This software may be distributed under the terms of the BSD license.
|
||||
* See README for more details.
|
||||
*
|
||||
* This file implements an example authentication algorithm defined for 3GPP
|
||||
* AKA. This can be used to implement a simple HLR/AuC into hlr_auc_gw to allow
|
||||
* EAP-AKA to be tested properly with real USIM cards.
|
||||
*
|
||||
* This implementations assumes that the r1..r5 and c1..c5 constants defined in
|
||||
* TS 35.206 are used, i.e., r1=64, r2=0, r3=32, r4=64, r5=96, c1=00..00,
|
||||
* c2=00..01, c3=00..02, c4=00..04, c5=00..08. The block cipher is assumed to
|
||||
* be AES (Rijndael).
|
||||
*/
|
||||
|
||||
|
||||
#include "milenage.h"
|
||||
#include "asterisk.h"
|
||||
#include "asterisk/utils.h"
|
||||
#include "asterisk/crypto.h"
|
||||
|
||||
static int aes_128_encrypt_block(const u8 *key, const u8 *plain, u8 *encr)
|
||||
{
|
||||
ast_aes_encrypt_key aes_key;
|
||||
|
||||
ast_aes_set_encrypt_key(key, &aes_key);
|
||||
if (ast_aes_encrypt(plain, encr, &aes_key) <= 0) {
|
||||
ast_log(LOG_ERROR, "Failed to ecrypt AES 128.");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void hexdump(int level, const char *file, int line, const char *func, const char *text, const uint8_t *data, int len)
|
||||
{
|
||||
char s[3 * len + 2], *p;
|
||||
int f;
|
||||
|
||||
for (p = s, f = 0; f < len; f++, p += 3) {
|
||||
sprintf(p, "%02hhX ", (unsigned char)data[f]);
|
||||
}
|
||||
ast_log(level, file, line, func, "%s: %s\n", text, s);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* milenage_f1 - Milenage f1 and f1* algorithms
|
||||
* @opc: OPc = 128-bit value derived from OP and K
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @sqn: SQN = 48-bit sequence number
|
||||
* @amf: AMF = 16-bit authentication management field
|
||||
* @mac_a: Buffer for MAC-A = 64-bit network authentication code, or %NULL
|
||||
* @mac_s: Buffer for MAC-S = 64-bit resync authentication code, or %NULL
|
||||
* Returns: 0 on success, -1 on failure
|
||||
*/
|
||||
int milenage_f1(const u8 *opc, const u8 *k, const u8 *_rand,
|
||||
const u8 *sqn, const u8 *amf, u8 *mac_a, u8 *mac_s)
|
||||
{
|
||||
u8 tmp1[16], tmp2[16], tmp3[16];
|
||||
int i;
|
||||
|
||||
/* tmp1 = TEMP = E_K(RAND XOR OP_C) */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[i] = _rand[i] ^ opc[i];
|
||||
if (aes_128_encrypt_block(k, tmp1, tmp1))
|
||||
return -1;
|
||||
|
||||
/* tmp2 = IN1 = SQN || AMF || SQN || AMF */
|
||||
memcpy(tmp2, sqn, 6);
|
||||
memcpy(tmp2 + 6, amf, 2);
|
||||
memcpy(tmp2 + 8, tmp2, 8);
|
||||
|
||||
/* OUT1 = E_K(TEMP XOR rot(IN1 XOR OP_C, r1) XOR c1) XOR OP_C */
|
||||
|
||||
/* rotate (tmp2 XOR OP_C) by r1 (= 0x40 = 8 bytes) */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp3[(i + 8) % 16] = tmp2[i] ^ opc[i];
|
||||
/* XOR with TEMP = E_K(RAND XOR OP_C) */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp3[i] ^= tmp1[i];
|
||||
/* XOR with c1 (= ..00, i.e., NOP) */
|
||||
|
||||
/* f1 || f1* = E_K(tmp3) XOR OP_c */
|
||||
if (aes_128_encrypt_block(k, tmp3, tmp1))
|
||||
return -1;
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[i] ^= opc[i];
|
||||
if (mac_a)
|
||||
memcpy(mac_a, tmp1, 8); /* f1 */
|
||||
if (mac_s)
|
||||
memcpy(mac_s, tmp1 + 8, 8); /* f1* */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* milenage_f2345 - Milenage f2, f3, f4, f5, f5* algorithms
|
||||
* @opc: OPc = 128-bit value derived from OP and K
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @res: Buffer for RES = 64-bit signed response (f2), or %NULL
|
||||
* @ck: Buffer for CK = 128-bit confidentiality key (f3), or %NULL
|
||||
* @ik: Buffer for IK = 128-bit integrity key (f4), or %NULL
|
||||
* @ak: Buffer for AK = 48-bit anonymity key (f5), or %NULL
|
||||
* @akstar: Buffer for AK = 48-bit anonymity key (f5*), or %NULL
|
||||
* Returns: 0 on success, -1 on failure
|
||||
*/
|
||||
int milenage_f2345(const u8 *opc, const u8 *k, const u8 *_rand,
|
||||
u8 *res, u8 *ck, u8 *ik, u8 *ak, u8 *akstar)
|
||||
{
|
||||
u8 tmp1[16], tmp2[16], tmp3[16];
|
||||
int i;
|
||||
|
||||
/* tmp2 = TEMP = E_K(RAND XOR OP_C) */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[i] = _rand[i] ^ opc[i];
|
||||
if (aes_128_encrypt_block(k, tmp1, tmp2))
|
||||
return -1;
|
||||
|
||||
/* OUT2 = E_K(rot(TEMP XOR OP_C, r2) XOR c2) XOR OP_C */
|
||||
/* OUT3 = E_K(rot(TEMP XOR OP_C, r3) XOR c3) XOR OP_C */
|
||||
/* OUT4 = E_K(rot(TEMP XOR OP_C, r4) XOR c4) XOR OP_C */
|
||||
/* OUT5 = E_K(rot(TEMP XOR OP_C, r5) XOR c5) XOR OP_C */
|
||||
|
||||
/* f2 and f5 */
|
||||
/* rotate by r2 (= 0, i.e., NOP) */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[i] = tmp2[i] ^ opc[i];
|
||||
tmp1[15] ^= 1; /* XOR c2 (= ..01) */
|
||||
/* f5 || f2 = E_K(tmp1) XOR OP_c */
|
||||
if (aes_128_encrypt_block(k, tmp1, tmp3))
|
||||
return -1;
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp3[i] ^= opc[i];
|
||||
if (res)
|
||||
memcpy(res, tmp3 + 8, 8); /* f2 */
|
||||
if (ak)
|
||||
memcpy(ak, tmp3, 6); /* f5 */
|
||||
|
||||
/* f3 */
|
||||
if (ck) {
|
||||
/* rotate by r3 = 0x20 = 4 bytes */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[(i + 12) % 16] = tmp2[i] ^ opc[i];
|
||||
tmp1[15] ^= 2; /* XOR c3 (= ..02) */
|
||||
if (aes_128_encrypt_block(k, tmp1, ck))
|
||||
return -1;
|
||||
for (i = 0; i < 16; i++)
|
||||
ck[i] ^= opc[i];
|
||||
}
|
||||
|
||||
/* f4 */
|
||||
if (ik) {
|
||||
/* rotate by r4 = 0x40 = 8 bytes */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[(i + 8) % 16] = tmp2[i] ^ opc[i];
|
||||
tmp1[15] ^= 4; /* XOR c4 (= ..04) */
|
||||
if (aes_128_encrypt_block(k, tmp1, ik))
|
||||
return -1;
|
||||
for (i = 0; i < 16; i++)
|
||||
ik[i] ^= opc[i];
|
||||
}
|
||||
|
||||
/* f5* */
|
||||
if (akstar) {
|
||||
/* rotate by r5 = 0x60 = 12 bytes */
|
||||
for (i = 0; i < 16; i++)
|
||||
tmp1[(i + 4) % 16] = tmp2[i] ^ opc[i];
|
||||
tmp1[15] ^= 8; /* XOR c5 (= ..08) */
|
||||
if (aes_128_encrypt_block(k, tmp1, tmp1))
|
||||
return -1;
|
||||
for (i = 0; i < 6; i++)
|
||||
akstar[i] = tmp1[i] ^ opc[i];
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* milenage_generate - Generate AKA AUTN,IK,CK,RES
|
||||
* @opc: OPc = 128-bit operator variant algorithm configuration field (encr.)
|
||||
* @amf: AMF = 16-bit authentication management field
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @sqn: SQN = 48-bit sequence number
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @autn: Buffer for AUTN = 128-bit authentication token
|
||||
* @ik: Buffer for IK = 128-bit integrity key (f4), or %NULL
|
||||
* @ck: Buffer for CK = 128-bit confidentiality key (f3), or %NULL
|
||||
* @res: Buffer for RES = 64-bit signed response (f2), or %NULL
|
||||
* @res_len: Max length for res; set to used length or 0 on failure
|
||||
*/
|
||||
void milenage_generate(const u8 *opc, const u8 *amf, const u8 *k,
|
||||
const u8 *sqn, const u8 *_rand, u8 *autn, u8 *ik,
|
||||
u8 *ck, u8 *res, size_t *res_len)
|
||||
{
|
||||
int i;
|
||||
u8 mac_a[8], ak[6];
|
||||
|
||||
if (*res_len < 8) {
|
||||
*res_len = 0;
|
||||
return;
|
||||
}
|
||||
if (milenage_f1(opc, k, _rand, sqn, amf, mac_a, NULL) ||
|
||||
milenage_f2345(opc, k, _rand, res, ck, ik, ak, NULL)) {
|
||||
*res_len = 0;
|
||||
return;
|
||||
}
|
||||
*res_len = 8;
|
||||
|
||||
/* AUTN = (SQN ^ AK) || AMF || MAC */
|
||||
for (i = 0; i < 6; i++)
|
||||
autn[i] = sqn[i] ^ ak[i];
|
||||
memcpy(autn + 6, amf, 2);
|
||||
memcpy(autn + 8, mac_a, 8);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* milenage_auts - Milenage AUTS validation
|
||||
* @opc: OPc = 128-bit operator variant algorithm configuration field (encr.)
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @auts: AUTS = 112-bit authentication token from client
|
||||
* @sqn: Buffer for SQN = 48-bit sequence number
|
||||
* Returns: 0 = success (sqn filled), -1 on failure
|
||||
*/
|
||||
int milenage_auts(const u8 *opc, const u8 *k, const u8 *_rand, const u8 *auts,
|
||||
u8 *sqn)
|
||||
{
|
||||
u8 amf[2] = { 0x00, 0x00 }; /* TS 33.102 v7.0.0, 6.3.3 */
|
||||
u8 ak[6], mac_s[8];
|
||||
int i;
|
||||
|
||||
if (milenage_f2345(opc, k, _rand, NULL, NULL, NULL, NULL, ak))
|
||||
return -1;
|
||||
for (i = 0; i < 6; i++)
|
||||
sqn[i] = auts[i] ^ ak[i];
|
||||
if (milenage_f1(opc, k, _rand, sqn, amf, NULL, mac_s) ||
|
||||
memcmp(mac_s, auts + 6, 8) != 0)
|
||||
return -1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* gsm_milenage - Generate GSM-Milenage (3GPP TS 55.205) authentication triplet
|
||||
* @opc: OPc = 128-bit operator variant algorithm configuration field (encr.)
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @sres: Buffer for SRES = 32-bit SRES
|
||||
* @kc: Buffer for Kc = 64-bit Kc
|
||||
* Returns: 0 on success, -1 on failure
|
||||
*/
|
||||
int gsm_milenage(const u8 *opc, const u8 *k, const u8 *_rand, u8 *sres, u8 *kc)
|
||||
{
|
||||
u8 res[8], ck[16], ik[16];
|
||||
int i;
|
||||
|
||||
if (milenage_f2345(opc, k, _rand, res, ck, ik, NULL, NULL))
|
||||
return -1;
|
||||
|
||||
for (i = 0; i < 8; i++)
|
||||
kc[i] = ck[i] ^ ck[i + 8] ^ ik[i] ^ ik[i + 8];
|
||||
|
||||
#ifdef GSM_MILENAGE_ALT_SRES
|
||||
memcpy(sres, res, 4);
|
||||
#else /* GSM_MILENAGE_ALT_SRES */
|
||||
for (i = 0; i < 4; i++)
|
||||
sres[i] = res[i] ^ res[i + 4];
|
||||
#endif /* GSM_MILENAGE_ALT_SRES */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* milenage_generate - Generate AKA AUTN,IK,CK,RES
|
||||
* @opc: OPc = 128-bit operator variant algorithm configuration field (encr.)
|
||||
* @k: K = 128-bit subscriber key
|
||||
* @sqn: SQN = 48-bit sequence number
|
||||
* @_rand: RAND = 128-bit random challenge
|
||||
* @autn: AUTN = 128-bit authentication token
|
||||
* @ik: Buffer for IK = 128-bit integrity key (f4), or %NULL
|
||||
* @ck: Buffer for CK = 128-bit confidentiality key (f3), or %NULL
|
||||
* @res: Buffer for RES = 64-bit signed response (f2), or %NULL
|
||||
* @res_len: Variable that will be set to RES length
|
||||
* @auts: 112-bit buffer for AUTS
|
||||
* Returns: 0 on success, -1 on failure, or -2 on synchronization failure
|
||||
*/
|
||||
int milenage_check(const u8 *opc, const u8 *k, const u8 *sqn, const u8 *_rand,
|
||||
const u8 *autn, u8 *ik, u8 *ck, u8 *res, size_t *res_len,
|
||||
u8 *auts)
|
||||
{
|
||||
int i;
|
||||
u8 mac_a[8], ak[6], rx_sqn[6];
|
||||
const u8 *amf;
|
||||
|
||||
hexdump(LOG_DEBUG, "Milenage: AUTN", autn, 16);
|
||||
hexdump(LOG_DEBUG, "Milenage: RAND", _rand, 16);
|
||||
|
||||
if (milenage_f2345(opc, k, _rand, res, ck, ik, ak, NULL))
|
||||
return -1;
|
||||
|
||||
*res_len = 8;
|
||||
hexdump(LOG_DEBUG, "Milenage: RES", res, *res_len);
|
||||
hexdump(LOG_DEBUG, "Milenage: CK", ck, 16);
|
||||
hexdump(LOG_DEBUG, "Milenage: IK", ik, 16);
|
||||
hexdump(LOG_DEBUG, "Milenage: AK", ak, 6);
|
||||
|
||||
/* AUTN = (SQN ^ AK) || AMF || MAC */
|
||||
for (i = 0; i < 6; i++)
|
||||
rx_sqn[i] = autn[i] ^ ak[i];
|
||||
hexdump(LOG_DEBUG, "Milenage: SQN", rx_sqn, 6);
|
||||
|
||||
if (memcmp(rx_sqn, sqn, 6) <= 0) {
|
||||
u8 auts_amf[2] = { 0x00, 0x00 }; /* TS 33.102 v7.0.0, 6.3.3 */
|
||||
if (milenage_f2345(opc, k, _rand, NULL, NULL, NULL, NULL, ak))
|
||||
return -1;
|
||||
hexdump(LOG_DEBUG, "Milenage: AK*", ak, 6);
|
||||
for (i = 0; i < 6; i++)
|
||||
auts[i] = sqn[i] ^ ak[i];
|
||||
if (milenage_f1(opc, k, _rand, sqn, auts_amf, NULL, auts + 6))
|
||||
return -1;
|
||||
hexdump(LOG_DEBUG, "Milenage: AUTS", auts, 14);
|
||||
return -2;
|
||||
}
|
||||
|
||||
amf = autn + 6;
|
||||
hexdump(LOG_DEBUG, "Milenage: AMF", amf, 2);
|
||||
if (milenage_f1(opc, k, _rand, rx_sqn, amf, mac_a, NULL))
|
||||
return -1;
|
||||
|
||||
hexdump(LOG_DEBUG, "Milenage: MAC_A", mac_a, 8);
|
||||
|
||||
if (memcmp(mac_a, autn + 8, 8) != 0) {
|
||||
ast_log(LOG_DEBUG, "Milenage: MAC mismatch");
|
||||
hexdump(LOG_DEBUG, "Milenage: Received MAC_A",
|
||||
autn + 8, 8);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
|
@ -0,0 +1,24 @@
|
|||
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
|
||||
typedef uint8_t u8;
|
||||
typedef uint16_t u16;
|
||||
typedef uint32_t u32;
|
||||
|
||||
void hexdump(int level, const char *file, int line, const char *func, const char *text, const uint8_t *data, int len);
|
||||
|
||||
int milenage_f1(const u8 *opc, const u8 *k, const u8 *_rand,
|
||||
const u8 *sqn, const u8 *amf, u8 *mac_a, u8 *mac_s);
|
||||
int milenage_f2345(const u8 *opc, const u8 *k, const u8 *_rand,
|
||||
u8 *res, u8 *ck, u8 *ik, u8 *ak, u8 *akstar);
|
||||
void milenage_generate(const u8 *opc, const u8 *amf, const u8 *k,
|
||||
const u8 *sqn, const u8 *_rand, u8 *autn, u8 *ik,
|
||||
u8 *ck, u8 *res, size_t *res_len);
|
||||
int milenage_auts(const u8 *opc, const u8 *k, const u8 *_rand, const u8 *auts,
|
||||
u8 *sqn);
|
||||
int gsm_milenage(const u8 *opc, const u8 *k, const u8 *_rand, u8 *sres, u8 *kc);
|
||||
int milenage_check(const u8 *opc, const u8 *k, const u8 *sqn, const u8 *_rand,
|
||||
const u8 *autn, u8 *ik, u8 *ck, u8 *res, size_t *res_len,
|
||||
u8 *auts);
|
Loading…
Reference in New Issue