diff --git a/build_tools/menuselect-deps.in b/build_tools/menuselect-deps.in
index 1d9703419a..3922b631a9 100644
--- a/build_tools/menuselect-deps.in
+++ b/build_tools/menuselect-deps.in
@@ -58,6 +58,7 @@ SPEEX=@PBX_SPEEX@
SPEEXDSP=@PBX_SPEEXDSP@
SPEEX_PREPROCESS=@PBX_SPEEX_PREPROCESS@
VEVS=@PBX_VEVS@
+LIBMNL=@PBX_LIBMNL@
SQLITE3=@PBX_SQLITE3@
SRTP=@PBX_SRTP@
SS7=@PBX_SS7@
diff --git a/res/Makefile b/res/Makefile
index 96c95a69cc..7aaf1ddda9 100644
--- a/res/Makefile
+++ b/res/Makefile
@@ -68,6 +68,7 @@ $(call MOD_ADD_C,res_stasis_recording,stasis_recording/stored.c)
$(call MOD_ADD_C,res_stir_shaken,$(wildcard res_stir_shaken/*.c))
$(call MOD_ADD_C,res_aeap,$(wildcard res_aeap/*.c))
$(call MOD_ADD_C,res_geolocation,$(wildcard res_geolocation/*.c))
+$(call MOD_ADD_C,res_pjsip_volte,$(wildcard res_pjsip_volte/*.c))
# These are the xml and xslt files to be embedded
res_geolocation.so: res_geolocation/pidf_lo_test.o res_geolocation/pidf_to_eprofile.o res_geolocation/eprofile_to_pidf.o
diff --git a/res/res_pjsip_volte.c b/res/res_pjsip_volte.c
index 11b199e224..3ffaf6278d 100644
--- a/res/res_pjsip_volte.c
+++ b/res/res_pjsip_volte.c
@@ -1,4 +1,5 @@
/*** MODULEINFO
+ libmnl
pjproject
res_pjsip
res_pjsip_session
@@ -19,6 +20,8 @@
#include "asterisk/causes.h"
#include "asterisk/threadpool.h"
+#include "res_pjsip_volte/netlink_xfrm.h"
+
#define PJ_CONSUME PJ_TRUE
const pj_str_t STR_SUPPORTED = { "Supported", 9 };
@@ -28,19 +31,74 @@ const pj_str_t STR_PATH = { "path", 4 };
const pj_str_t STR_SEC_AGREE = { "sec-agree", 9 };
const pj_str_t STR_SECURITY_CLIENT = { "Security-Client", 15 };
+const pj_str_t STR_SECURITY_SERVER = { "Security-Server", 15 };
-const char *ipsec_alg[] = {
- "hmac-md5-96",
- "hmac-sha-1-96",
- NULL
+struct ipsec_alg {
+ const char *sip_name;
+ const char *kernel_name;
};
-const char *ipsec_ealg[] = {
- "null",
- NULL
+const struct ipsec_alg ipsec_alg[] = {
+ { "hmac-md5-96", "hmac(md5)" },
+ { "hmac-sha-1-96", "hmac(sha1)" },
+ { NULL, NULL }
};
+const struct ipsec_alg ipsec_ealg[] = {
+ { "null", "cipher_null" },
+ { NULL, NULL }
+};
+static struct mnl_socket *g_mnl_socket = NULL;
+struct sockaddr_storage g_src_addr, g_dst_addr;
+static uint32_t g_spi_c, g_spi_s;
+static pj_bool_t g_spi_c_valid = PJ_FALSE, g_spi_s_valid = PJ_TRUE;
+
+static void copy_pj_sockaddr_to_sockaddr_storage(const pj_sockaddr *src, struct sockaddr_storage *dst)
+{
+ memset(dst, 0, sizeof(struct sockaddr_storage));
+
+ dst->ss_family = (src->addr.sa_family == PJ_AF_INET) ? AF_INET : AF_INET6;
+
+ if (dst->ss_family == AF_INET) {
+ struct sockaddr_in *dst_in = (struct sockaddr_in *)dst;
+ const pj_sockaddr_in *src_in = (const pj_sockaddr_in *)src;
+ dst_in->sin_port = htons(src_in->sin_port);
+ memcpy(&dst_in->sin_addr, &src_in->sin_addr, sizeof(struct in_addr));
+ } else if (dst->ss_family == AF_INET6) {
+ struct sockaddr_in6 *dst_in6 = (struct sockaddr_in6 *)dst;
+ const pj_sockaddr_in6 *src_in6 = (const pj_sockaddr_in6 *)src;
+ dst_in6->sin6_port = htons(src_in6->sin6_port);
+ memcpy(&dst_in6->sin6_addr, &src_in6->sin6_addr, sizeof(struct in6_addr));
+ }
+}
+
+static char *sockaddr_storage_to_string(const struct sockaddr_storage *addr, char *ip_string, size_t ip_string_len)
+{
+ if (addr->ss_family == AF_INET) {
+ const struct sockaddr_in *addr_in = (const struct sockaddr_in *)addr;
+ inet_ntop(AF_INET, &addr_in->sin_addr, ip_string, ip_string_len);
+ } else if (addr->ss_family == AF_INET6) {
+ const struct sockaddr_in6 *addr_in6 = (const struct sockaddr_in6 *)addr;
+ inet_ntop(AF_INET6, &addr_in6->sin6_addr, ip_string, ip_string_len);
+ } else {
+ snprintf(ip_string, ip_string_len, "");
+ }
+
+ return ip_string;
+}
+
+static void cleanup_xfrm(void)
+{
+ if (g_spi_c_valid) {
+ xfrm_sa_del(g_mnl_socket, (const struct sockaddr *)&g_src_addr, (const struct sockaddr *)&g_dst_addr, g_spi_c);
+ g_spi_c_valid = PJ_FALSE;
+ }
+ if (g_spi_s_valid) {
+ xfrm_sa_del(g_mnl_socket, (const struct sockaddr *)&g_src_addr, (const struct sockaddr *)&g_dst_addr, g_spi_s);
+ g_spi_s_valid = PJ_FALSE;
+ }
+}
static pj_status_t on_load(pjsip_endpoint *endpt)
{
printf("endpoint!\n");
@@ -74,16 +132,12 @@ static pj_bool_t is_ims(const pjsip_msg *msg)
return PJ_TRUE;
}
-
-#warning ip xfrm state add src dst proto esp spi auth hmac-sha1-96 0x
-
-static void add_securety_client_hdr(pjsip_tx_data *tdata, const char *alg[], const char *ealg[], uint32_t spi_c, uint32_t spi_s, uint16_t port_c, uint16_t port_s)
+static void add_securety_client_hdr(pjsip_tx_data *tdata, const struct ipsec_alg alg[], const struct ipsec_alg ealg[], uint32_t spi_c, uint32_t spi_s, uint16_t port_c, uint16_t port_s)
{
pjsip_generic_array_hdr *hdr;
char str[256];
int i, j;
- puts("add sec");
/* Add Security-Client header. */
hdr = pjsip_generic_array_hdr_create(tdata->pool, &STR_SECURITY_CLIENT);
if (!hdr) {
@@ -92,9 +146,9 @@ static void add_securety_client_hdr(pjsip_tx_data *tdata, const char *alg[], con
}
/* Create tupple for given algorithms. */
- for (i = 0; alg[i]; i++) {
- for (j = 0; ealg[j]; j++) {
- snprintf(str, sizeof(str), "ipsec-3gpp; alg=%s; ealg=%s; spi-c=%u; spi-s=%u; port-c=%u; port-s=%u", alg[i], ealg[j], spi_c, spi_s, port_c, port_s);
+ for (i = 0; alg[i].sip_name; i++) {
+ for (j = 0; ealg[j].sip_name; j++) {
+ snprintf(str, sizeof(str), "ipsec-3gpp; alg=%s; ealg=%s; spi-c=%u; spi-s=%u; port-c=%u; port-s=%u", alg[i].sip_name, ealg[j].sip_name, spi_c, spi_s, port_c, port_s);
if (hdr->count == PJSIP_GENERIC_ARRAY_MAX_COUNT) {
ast_log(LOG_ERROR, "Too many evalue in array, skipping '%s'.", str);
continue;
@@ -150,18 +204,41 @@ static void add_value_array_hdr(pjsip_tx_data *tdata, const pj_str_t *name, cons
static pj_status_t on_tx_register_request(pjsip_tx_data *tdata)
{
+ char src_str[64], dst_str[64];
+ int rc;
+
if (!is_ims(tdata->msg))
return PJ_SUCCESS;
+ /* Get local and remote peer address. */
+ copy_pj_sockaddr_to_sockaddr_storage(&tdata->tp_info.transport->local_addr, &g_src_addr);
+ copy_pj_sockaddr_to_sockaddr_storage(&tdata->tp_info.dst_addr, &g_dst_addr);
+ ast_log(LOG_DEBUG, "peers %s->%s\n", sockaddr_storage_to_string(&g_src_addr, src_str, sizeof(src_str)), sockaddr_storage_to_string(&g_dst_addr, dst_str, sizeof(dst_str)));
+
+ /* Allocate SPI-C and SPI-S towards remote peer. */
+ rc = xfrm_spi_alloc(g_mnl_socket, 2342, &g_spi_c, (const struct sockaddr *)&g_src_addr, (const struct sockaddr *)&g_dst_addr);
+ if (rc < 0) {
+spi_alloc_failed:
+ ast_log(LOG_ERROR, "Failed to request SPI.\n");
+ return PJ_CONSUME;
+ }
+ g_spi_s_valid = PJ_TRUE;
+ rc = xfrm_spi_alloc(g_mnl_socket, 2342, &g_spi_s, (const struct sockaddr *)&g_src_addr, (const struct sockaddr *)&g_dst_addr);
+ if (rc < 0)
+ goto spi_alloc_failed;
+ g_spi_c_valid = PJ_TRUE;
+ ast_log(LOG_DEBUG, "SPI-C=0x%08x SPI-S=0x%08x\n", g_spi_s, g_spi_c);
+
+
/* "Require: sec-agree" */
add_value_array_hdr(tdata, &STR_REQUIRE, &STR_SEC_AGREE);
/* "Proxy-Require: sec-agree" */
add_value_string_hdr(tdata, &STR_PROXY_REQUIRE, &STR_SEC_AGREE);
/* "Supported: path,sec-agree" */
add_value_array_hdr(tdata, &STR_SUPPORTED, &STR_PATH);
- /* "Seciruty-Client: ..." */
+ /* "Security-Client: ..." */
add_value_array_hdr(tdata, &STR_SUPPORTED, &STR_SEC_AGREE);
- add_securety_client_hdr(tdata, ipsec_alg, ipsec_ealg, 0xbea96586, 0x14ac7e17, 43419, 42318);
+ add_securety_client_hdr(tdata, ipsec_alg, ipsec_ealg, g_spi_c, g_spi_s, 43419, 42318);
@@ -198,7 +275,6 @@ static pj_status_t on_tx_request(pjsip_tx_data *tdata)
case PJSIP_REGISTER_METHOD:
puts("register");
return on_tx_register_request(tdata);
- break;
case PJSIP_INVITE_METHOD:
break;
default:
@@ -208,6 +284,28 @@ static pj_status_t on_tx_request(pjsip_tx_data *tdata)
return PJ_SUCCESS;
}
+static pj_bool_t on_rx_401_response(pjsip_rx_data *rdata)
+{
+ pjsip_generic_string_hdr *hdr;
+
+ /* Get Security-Server from header. */
+ hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &STR_SECURITY_SERVER, NULL);
+ if (!hdr) {
+ ast_log(LOG_ERROR, "Missing 'Security-Server' in REGISTER reply.");
+ return PJ_CONSUME;
+ }
+#if 0
+ if (!hdr->count) {
+ ast_log(LOG_ERROR, "Missing value in 'Security-Server' in REGISTER reply.");
+ return PJ_CONSUME;
+ }
+#endif
+ puts("1");
+ printf("hurra: %s\n", hdr->hvalue.ptr);
+
+ return PJ_FALSE;
+}
+
/* What response PJSIP receives */
static pj_bool_t on_rx_response(pjsip_rx_data *rdata)
{
@@ -219,17 +317,10 @@ static pj_bool_t on_rx_response(pjsip_rx_data *rdata)
return PJ_CONSUME;
}
- const pj_str_t REFER_TO = { "Server", 6 };
- pjsip_generic_string_hdr *refer_to_hdr;
-
- refer_to_hdr = pjsip_msg_find_hdr_by_name(msg, &REFER_TO, NULL);
- printf("server=%s\n", refer_to_hdr->hvalue.ptr);
-
- printf("%d\n", msg->line.req.method.id);
switch ((int)msg->line.req.method.id) {
- case 403:
- puts("forbidden");
- break;
+ case 401:
+ puts("401");
+ return on_rx_401_response(rdata);
default:
break;
}
@@ -262,6 +353,43 @@ static pjsip_module volte_module = {
};
+
+
+
+
+
+
+
+static int gai_helper(struct sockaddr_storage *out, const char *node, const char *port)
+{
+ struct addrinfo hints = {
+ .ai_flags = AI_NUMERICSERV | AI_NUMERICHOST,
+ };
+ struct addrinfo *res;
+ int rc;
+
+ rc = getaddrinfo(node, port, &hints, &res);
+ if (rc != 0) {
+ fprintf(stderr, "getaddrinfo(%s): %s\n", node, gai_strerror(rc));
+ return -1;
+ }
+
+ memcpy(out, res->ai_addr, res->ai_addrlen);
+
+ freeaddrinfo(res);
+
+ return 0;
+}
+
+
+
+
+
+
+
+
+
+
static int load_module(void)
{
if (ast_sip_register_service(&volte_module) != PJ_SUCCESS) {
@@ -269,13 +397,29 @@ static int load_module(void)
return AST_MODULE_LOAD_DECLINE;
}
+ g_mnl_socket = xfrm_init_mnl_socket();
+ if (!g_mnl_socket) {
+ ast_log(LOG_ERROR, "Failed to init mnl socket to admin xfrm rules.\n");
+ ast_sip_unregister_service(&volte_module);
+ return AST_MODULE_LOAD_DECLINE;
+ }
+
+
+
+
+
+
+
+
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
ast_sip_unregister_service(&volte_module);
+ xfrm_exit_mnl_socket(g_mnl_socket);
+ cleanup_xfrm();
return 0;
}
diff --git a/res/res_pjsip_volte/netlink_xfrm.c b/res/res_pjsip_volte/netlink_xfrm.c
new file mode 100644
index 0000000000..c56e578c86
--- /dev/null
+++ b/res/res_pjsip_volte/netlink_xfrm.c
@@ -0,0 +1,439 @@
+/* Linux kernel IPsec interfacing via netlink XFRM
+ *
+ * Copyright (C) 2021 Harald Welte
+ *
+ * DOUBANGO 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.
+ *
+ * DOUBANGO 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 DOUBANGO.
+ */
+
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+
+#include "netlink_xfrm.h"
+
+#define XFRM_USER_ID 0x240299 /* some random number; let's use TS 24.299 */
+
+struct mnl_socket *xfrm_init_mnl_socket(void)
+{
+ struct mnl_socket *mnl_socket = mnl_socket_open(NETLINK_XFRM);
+ if (!mnl_socket) {
+ fprintf(stderr, "ERR: Could not open XFRM netlink socket: %s", strerror(errno));
+ return NULL;
+ }
+
+ if (mnl_socket_bind(mnl_socket, 0, MNL_SOCKET_AUTOPID) < 0) {
+ fprintf(stderr, "ERR: Could not open XFRM netlink socket: %s", strerror(errno));
+ mnl_socket_close(mnl_socket);
+ return NULL;
+ }
+
+ return mnl_socket;
+}
+
+void xfrm_exit_mnl_socket(struct mnl_socket *mnl_socket)
+{
+ mnl_socket_close(mnl_socket);
+}
+
+static unsigned int get_next_nlmsg_seq(void)
+{
+ static unsigned int next_seq;
+ return next_seq++;
+}
+
+
+/* this is just a simple call-back which returns the nlmsghdr via 'data' */
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ const struct nlmsghdr **rx = data;
+
+ *rx = nlh;
+
+ /* FIXME: is there a situation in which we'd want to return OK and not STOP? */
+ return MNL_CB_STOP;
+}
+
+/* send 'tx' via 'mnl_sock' and receive messages from kernel, using caller-provided
+ * rx_buf/rx_buf_size as temporary storage buffer; return response nlmsghdr in 'rx' */
+static int transceive_mnl(struct mnl_socket *mnl_sock, const struct nlmsghdr *tx,
+ uint8_t *rx_buf, size_t rx_buf_size, struct nlmsghdr **rx)
+{
+ int rc;
+
+ rc = mnl_socket_sendto(mnl_sock, tx, tx->nlmsg_len);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot create IPsec SA: %s\n", strerror(errno));
+ return -1;
+ }
+ puts("sent");
+
+ /* iterate until it is our answer, handing to mnl_cb_run, ... */
+ while (1) {
+ rc = mnl_socket_recvfrom(mnl_sock, rx_buf, rx_buf_size);
+ printf("rc=%d\n", rc);
+ if (rc == -1) {
+ perror("mnl_socket_recvfrom");
+ return -EIO;
+ }
+
+ rc = mnl_cb_run(rx_buf, rc, tx->nlmsg_seq, mnl_socket_get_portid(mnl_sock), data_cb, rx);
+ if (rc == -1) {
+ perror("mnl_cb_run");
+ return -EIO;
+ } else if (rc <= MNL_CB_STOP)
+ break;
+ }
+
+ return 0;
+}
+
+static int sockaddrs2xfrm_sel(struct xfrm_selector *sel, const struct sockaddr *src,
+ const struct sockaddr *dst)
+{
+ const struct sockaddr_in *sin;
+ const struct sockaddr_in6 *sin6;
+
+ switch (src->sa_family) {
+ case AF_INET:
+ sin = (const struct sockaddr_in *) src;
+ sel->saddr.a4 = sin->sin_addr.s_addr;
+ sel->prefixlen_s = 32;
+ sel->sport = sin->sin_port;
+ sin = (const struct sockaddr_in *) dst;
+ sel->daddr.a4 = sin->sin_addr.s_addr;
+ sel->prefixlen_d = 32;
+ sel->dport = sin->sin_port;
+ break;
+ case AF_INET6:
+ sin6 = (const struct sockaddr_in6 *) src;
+ memcpy(sel->saddr.a6, &sin6->sin6_addr, sizeof(sel->saddr.a6));
+ sel->prefixlen_s = 128;
+ sel->sport = sin6->sin6_port;
+ sin6 = (const struct sockaddr_in6 *) dst;
+ memcpy(sel->daddr.a6, &sin6->sin6_addr, sizeof(sel->daddr.a6));
+ sel->prefixlen_d = 128;
+ sel->dport = sin6->sin6_port;
+ break;
+ default:
+ return -EINVAL;
+ }
+ sel->dport_mask = 0xffff;
+ sel->sport_mask = 0xffff;
+ sel->family = src->sa_family;
+
+ return 0;
+}
+
+
+/***********************************************************************
+ * SPI Allocation
+ ***********************************************************************/
+
+/* allocate a local SPI for ESP between given src+dst address */
+int xfrm_spi_alloc(struct mnl_socket *mnl_sock, uint32_t reqid, uint32_t *spi_out,
+ const struct sockaddr *src, const struct sockaddr *dst)
+{
+ uint8_t msg_buf[MNL_SOCKET_BUFFER_SIZE];
+ uint8_t rx_buf[MNL_SOCKET_BUFFER_SIZE];
+ struct xfrm_userspi_info *xui, *rx_xui;
+ struct nlmsghdr *nlh, *rx_nlh = NULL;
+ const struct sockaddr_in *sin;
+ const struct sockaddr_in6 *sin6;
+ int rc;
+
+ memset(msg_buf, 0, sizeof(msg_buf));
+
+ if (src->sa_family != dst->sa_family)
+ return -EINVAL;
+
+ nlh = mnl_nlmsg_put_header(msg_buf);
+ nlh->nlmsg_flags = NLM_F_REQUEST,
+ nlh->nlmsg_type = XFRM_MSG_ALLOCSPI,
+ nlh->nlmsg_seq = get_next_nlmsg_seq();
+ //nlh->nlmsg_pid = reqid; //FIXME
+
+ xui = (struct xfrm_userspi_info *) mnl_nlmsg_put_extra_header(nlh, sizeof(*xui));
+
+ xui->info.family = src->sa_family;
+
+ /* RFC4303 reserves 0..255 */
+ xui->min = 0x100;
+ xui->max = 0xffffffff;
+
+ /* ID src, dst, proto */
+ switch (src->sa_family) {
+ case AF_INET:
+ sin = (const struct sockaddr_in *) src;
+ printf("src=%s ", inet_ntoa(sin->sin_addr));
+ xui->info.saddr.a4 = sin->sin_addr.s_addr;
+ sin = (const struct sockaddr_in *) dst;
+ printf("dst=%s ", inet_ntoa(sin->sin_addr));
+ xui->info.id.daddr.a4 = sin->sin_addr.s_addr;
+ //xui->info.sel.prefixlen_d = 32;
+ break;
+ case AF_INET6:
+ sin6 = (const struct sockaddr_in6 *) src;
+ memcpy(xui->info.saddr.a6, &sin6->sin6_addr, sizeof(xui->info.saddr.a6));
+ //xui->info.sel.prefixlen_s = 128;
+ sin6 = (const struct sockaddr_in6 *) dst;
+ memcpy(xui->info.id.daddr.a6, &sin6->sin6_addr, sizeof(xui->info.id.daddr.a6));
+ //xui->info.sel.prefixlen_d = 128;
+ break;
+ default:
+ fprintf(stderr, "ERR: unsupported address family %u\n", src->sa_family);
+ return -1;
+ }
+
+ xui->info.id.proto = IPPROTO_ESP;
+ xui->info.reqid = reqid;
+ xui->info.mode = XFRM_MODE_TRANSPORT;
+ //xui->info.replay_window = 32; // TODO: check spec
+
+ rc = transceive_mnl(mnl_sock, nlh, rx_buf, MNL_SOCKET_BUFFER_SIZE, &rx_nlh);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot create IPsec SA: %s\n", strerror(errno));
+ return -1;
+ }
+
+ /* parse response */
+ rx_xui = (void *)rx_nlh + sizeof(*rx_nlh);
+ //printf("Allocated SPI=0x%08x\n", ntohl(xui->info.id.spi));
+ *spi_out = ntohl(rx_xui->info.id.spi);
+
+ return 0;
+}
+
+/***********************************************************************
+ * SA (Security Association)
+ ***********************************************************************/
+
+int xfrm_sa_del(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi)
+{
+ uint8_t msg_buf[MNL_SOCKET_BUFFER_SIZE];
+ uint8_t rx_buf[MNL_SOCKET_BUFFER_SIZE];
+ struct xfrm_usersa_id *said;
+ struct nlmsghdr *nlh, *rx_nlh;
+ const struct sockaddr_in *sin;
+ const struct sockaddr_in6 *sin6;
+ xfrm_address_t saddr;
+ int rc;
+
+ memset(&saddr, 0, sizeof(saddr));
+
+ nlh = mnl_nlmsg_put_header(msg_buf);
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+ nlh->nlmsg_type = XFRM_MSG_DELSA;
+ nlh->nlmsg_seq = get_next_nlmsg_seq();
+ //nlh->nlmsg_pid = reqid; //FIXME
+
+ said = (struct xfrm_usersa_id *) mnl_nlmsg_put_extra_header(nlh, sizeof(*said));
+ said->spi = htonl(spi);
+ said->proto = IPPROTO_ESP;
+
+ said->family = src->sa_family;
+ switch (src->sa_family) {
+ case AF_INET:
+ sin = (const struct sockaddr_in *) src;
+ saddr.a4 = sin->sin_addr.s_addr;
+ sin = (const struct sockaddr_in *) dst;
+ said->daddr.a4 = sin->sin_addr.s_addr;
+ break;
+ case AF_INET6:
+ sin6 = (const struct sockaddr_in6 *) src;
+ memcpy(saddr.a6, &sin6->sin6_addr, sizeof(saddr.a6));
+ sin6 = (const struct sockaddr_in6 *) dst;
+ memcpy(said->daddr.a6, &sin6->sin6_addr, sizeof(said->daddr.a6));
+ break;
+ default:
+ fprintf(stderr, "ERR: unsupported address family %u\n", src->sa_family);
+ return -1;
+ }
+
+ mnl_attr_put(nlh, XFRMA_SRCADDR, sizeof(saddr), (void *)&saddr);
+
+ rc = transceive_mnl(mnl_sock, nlh, rx_buf, MNL_SOCKET_BUFFER_SIZE, &rx_nlh);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot delete IPsec SA: %s\n", strerror(errno));
+ return -1;
+ }
+
+ /* FIXME: parse response */
+
+ return 0;
+}
+
+int xfrm_sa_add(struct mnl_socket *mnl_sock, uint32_t reqid,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi,
+ const struct xfrm_algo *auth_algo, const struct xfrm_algo *ciph_algo)
+{
+ uint8_t msg_buf[MNL_SOCKET_BUFFER_SIZE];
+ uint8_t rx_buf[MNL_SOCKET_BUFFER_SIZE];
+ struct xfrm_usersa_info *sainfo;
+ struct nlmsghdr *nlh, *rx_nlh;
+ int rc;
+
+ nlh = mnl_nlmsg_put_header(msg_buf);
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL | NLM_F_ACK;
+ nlh->nlmsg_type = XFRM_MSG_NEWSA;
+ nlh->nlmsg_seq = get_next_nlmsg_seq();
+ //nlh->nlmsg_pid = reqid; //FIXME
+
+ sainfo = (struct xfrm_usersa_info *) mnl_nlmsg_put_extra_header(nlh, sizeof(*sainfo));
+ sainfo->sel.family = src->sa_family;
+ rc = sockaddrs2xfrm_sel(&sainfo->sel, src, dst);
+ if (rc < 0)
+ return -EINVAL;
+
+ sainfo->sel.user = htonl(XFRM_USER_ID);
+
+ sainfo->saddr = sainfo->sel.saddr;
+ sainfo->id.daddr = sainfo->sel.daddr;
+
+ sainfo->id.spi = htonl(spi);
+ sainfo->id.proto = IPPROTO_ESP;
+
+ sainfo->lft.soft_byte_limit = XFRM_INF;
+ sainfo->lft.hard_byte_limit = XFRM_INF;
+ sainfo->lft.soft_packet_limit = XFRM_INF;
+ sainfo->lft.hard_packet_limit = XFRM_INF;
+ sainfo->reqid = reqid;
+ sainfo->family = src->sa_family;
+ sainfo->mode = XFRM_MODE_TRANSPORT;
+ sainfo->replay_window = 32;
+
+ mnl_attr_put(nlh, XFRMA_ALG_AUTH, sizeof(struct xfrm_algo) + auth_algo->alg_key_len, auth_algo);
+
+ mnl_attr_put(nlh, XFRMA_ALG_CRYPT, sizeof(struct xfrm_algo) + ciph_algo->alg_key_len, ciph_algo);
+
+ rc = transceive_mnl(mnl_sock, nlh, rx_buf, MNL_SOCKET_BUFFER_SIZE, &rx_nlh);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot create IPsec SA: %s\n", strerror(errno));
+ return -1;
+ }
+
+ /* FIXME: parse response */
+
+ return 0;
+}
+
+/***********************************************************************
+ * Security Policy
+ ***********************************************************************/
+
+int xfrm_policy_add(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi, bool dir_in)
+{
+ uint8_t msg_buf[MNL_SOCKET_BUFFER_SIZE];
+ uint8_t rx_buf[MNL_SOCKET_BUFFER_SIZE];
+ struct xfrm_userpolicy_info *pinfo;
+ struct xfrm_user_tmpl tmpl;
+ struct nlmsghdr *nlh, *rx_nlh;
+ int rc;
+
+ memset(&tmpl, 0, sizeof(tmpl));
+
+ nlh = mnl_nlmsg_put_header(msg_buf);
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL | NLM_F_ACK;
+ nlh->nlmsg_type = XFRM_MSG_NEWPOLICY;
+ nlh->nlmsg_seq = get_next_nlmsg_seq();
+ //nlh->nlmsg_pid = reqid; //FIXME
+
+ pinfo = (struct xfrm_userpolicy_info *) mnl_nlmsg_put_extra_header(nlh, sizeof(*pinfo));
+
+ rc = sockaddrs2xfrm_sel(&pinfo->sel, src, dst);
+ if (rc < 0)
+ return -EINVAL;
+
+ pinfo->sel.user = htonl(XFRM_USER_ID);
+
+ pinfo->lft.soft_byte_limit = XFRM_INF;
+ pinfo->lft.hard_byte_limit = XFRM_INF;
+ pinfo->lft.soft_packet_limit = XFRM_INF;
+ pinfo->lft.hard_packet_limit = XFRM_INF;
+ pinfo->priority = 2342; // FIXME
+ pinfo->action = XFRM_POLICY_ALLOW;
+ pinfo->share = XFRM_SHARE_ANY;
+
+ if (dir_in)
+ pinfo->dir = XFRM_POLICY_IN;
+ else
+ pinfo->dir = XFRM_POLICY_OUT;
+
+ tmpl.id.proto = IPPROTO_ESP;
+ tmpl.id.daddr = pinfo->sel.daddr;
+ tmpl.saddr = pinfo->sel.saddr;
+ tmpl.family = pinfo->sel.family;
+ tmpl.reqid = spi;
+ tmpl.mode = XFRM_MODE_TRANSPORT;
+ tmpl.aalgos = 0xffffffff;
+ tmpl.ealgos = 0xffffffff;
+ tmpl.calgos = 0xffffffff;
+ mnl_attr_put(nlh, XFRMA_TMPL, sizeof(tmpl), &tmpl);
+
+ rc = transceive_mnl(mnl_sock, nlh, rx_buf, MNL_SOCKET_BUFFER_SIZE, &rx_nlh);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot create IPsec policy: %s\n", strerror(errno));
+ return -1;
+ }
+
+ /* FIXME: parse response */
+
+ return 0;
+}
+
+
+int xfrm_policy_del(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, bool dir_in)
+{
+ uint8_t msg_buf[MNL_SOCKET_BUFFER_SIZE];
+ uint8_t rx_buf[MNL_SOCKET_BUFFER_SIZE];
+ struct xfrm_userpolicy_id *pid;
+ struct nlmsghdr *nlh, *rx_nlh;
+ int rc;
+
+ nlh = mnl_nlmsg_put_header(msg_buf);
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+ nlh->nlmsg_type = XFRM_MSG_DELPOLICY;
+ nlh->nlmsg_seq = get_next_nlmsg_seq();
+ //nlh->nlmsg_pid = reqid; //FIXME
+
+ pid = (struct xfrm_userpolicy_id *) mnl_nlmsg_put_extra_header(nlh, sizeof(*pid));
+
+ rc = sockaddrs2xfrm_sel(&pid->sel, src, dst);
+ if (rc < 0)
+ return -EINVAL;
+
+ pid->sel.user = htonl(XFRM_USER_ID);
+
+ if (dir_in)
+ pid->dir = XFRM_POLICY_IN;
+ else
+ pid->dir = XFRM_POLICY_OUT;
+
+ rc = transceive_mnl(mnl_sock, nlh, rx_buf, MNL_SOCKET_BUFFER_SIZE, &rx_nlh);
+ if (rc < 0) {
+ fprintf(stderr, "ERR: cannot delete IPsec policy: %s\n", strerror(errno));
+ return -1;
+ }
+
+ /* FIXME: parse response */
+
+ return 0;
+}
diff --git a/res/res_pjsip_volte/netlink_xfrm.h b/res/res_pjsip_volte/netlink_xfrm.h
new file mode 100644
index 0000000000..485c78d8f0
--- /dev/null
+++ b/res/res_pjsip_volte/netlink_xfrm.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include
+#include
+#include
+#include
+
+struct mnl_socket;
+
+struct xfrm_algobuf {
+ struct xfrm_algo algo;
+ uint8_t buf[sizeof(struct xfrm_algo) + 128];
+};
+
+struct mnl_socket *xfrm_init_mnl_socket(void);
+
+void xfrm_exit_mnl_socket(struct mnl_socket *mnl_socket);
+
+int xfrm_spi_alloc(struct mnl_socket *mnl_sock, uint32_t reqid, uint32_t *spi_out,
+ const struct sockaddr *src, const struct sockaddr *dst);
+
+int xfrm_sa_add(struct mnl_socket *mnl_sock, uint32_t reqid,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi,
+ const struct xfrm_algo *auth_algo, const struct xfrm_algo *ciph_algo);
+
+int xfrm_sa_del(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi);
+
+int xfrm_policy_add(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, uint32_t spi, bool dir_in);
+
+int xfrm_policy_del(struct mnl_socket *mnl_sock,
+ const struct sockaddr *src, const struct sockaddr *dst, bool dir_in);