mirror of
https://gitlab.eurecom.fr/oai/openairinterface5g.git
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101 lines
4.1 KiB
C
101 lines
4.1 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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#include <assert.h>
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#include "pdu_session.h"
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// we can't include the file for PDU session type defines, as it pulls in too
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// much. However, we only use it for mapping types to integers, which are
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// standard defined, so it should be ok.
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//#include "openair3/NAS/NR_UE/5GS/5GSM/MSG/PduSessionEstablishmentAccept.h"
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#include "common/utils/utils.h"
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#include "common/config/config_paramdesc.h"
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#include "common/config/config_userapi.h"
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// clang-format off
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// Note: Default PDU session ID 0 does not exist and will be replaced with PDU
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// session index if not set to a parameter > 0!
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#define PDU_SESS_PARAMS_DESC { \
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{"id", "PDU session ID\n", 0, .iptr=NULL, .defintval=0, TYPE_INT, 0}, \
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{"type", "PDU session type\n", 0, .strptr=NULL, .defstrval="IPv4", TYPE_STRING, 0}, \
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{"nssai_sst", "NSSAI slice type\n", 0, .u8ptr=NULL, .defintval=1, TYPE_UINT8, 0}, \
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{"nssai_sd", "NSSAI slice differentiator\n", 0, .uptr=NULL, .defintval=0xffffff, TYPE_UINT32, 0}, \
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{"dnn", "PDU session DNN (APN)\n", 0, .strptr=NULL, .defstrval="oai", TYPE_STRING, 0}, \
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}
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#define PDU_SESS_PARAMS_CHECK { \
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{.s2 = {config_check_intrange, {0, 255}}}, \
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{.s3a = {config_checkstr_assign_integer, \
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{"IPv4", "IPv6", "IPv4v6", "Ethernet"}, \
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{1 /*PDU_SESSION_TYPE_IPV4*/, \
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2 /*PDU_SESSION_TYPE_IPV6*/, \
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3 /*PDU_SESSION_TYPE_IPV4V6*/, \
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5 /*PDU_SESSION_TYPE_ETHER*/}, \
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4}}, \
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{.s2 = {config_check_intrange, {1, 4}}}, \
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{.s2 = {config_check_intrange, {1, 0xffffff}}}, \
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{.s4 = {config_check_dnn}}, \
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}
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// clang-format on
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static int config_check_dnn(configmodule_interface_t *cfg, paramdef_t *param)
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{
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UNUSED(cfg);
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const char *dnn = *param->strptr;
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int dnn_len = strlen(dnn);
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if (dnn_len > 102) {
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printf("DNN '%s' exceeds max len of 102 (is %d) (TS 24.501 §9.11.2.1A)\n", dnn, dnn_len);
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return -1;
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}
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// check for valid characters in the APN (TS 23.003 §9.1)
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// we don't enforce all conditions
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const char *allowed = "abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"0123456789.-";
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while (*dnn) {
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if (!strchr(allowed, *dnn)) {
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printf("character '%c' in DNN '%s' is not allowed (TS 23.003 §9.1)\n", *dnn, *param->strptr);
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return -1;
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}
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dnn++;
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}
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return 0;
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}
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int get_pdu_session_configs(const char *uiccName, pdu_session_config_t *configs, int max_len)
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{
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paramdef_t pdu_sess_params[] = PDU_SESS_PARAMS_DESC;
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const int npsp = sizeofArray(pdu_sess_params);
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paramlist_def_t pdu_sess_list = {"pdu_sessions"};
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checkedparam_t pdu_sess_params_check[] = PDU_SESS_PARAMS_CHECK;
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static_assert(sizeofArray(pdu_sess_params) == sizeofArray(pdu_sess_params_check),
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"param_def_t array and corresponding checkedparam_t array should have the same size");
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for (int i = 0; i < sizeofArray(pdu_sess_params); ++i)
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pdu_sess_params[i].chkPptr = &pdu_sess_params_check[i];
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int ret = config_getlist(config_get_if(), &pdu_sess_list, pdu_sess_params, sizeofArray(pdu_sess_params), uiccName);
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if (ret < 0) {
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// couldn't load configuration from pdu_sessions, caller has to handle
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return -1;
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}
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int num = pdu_sess_list.numelt;
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AssertFatal(num <= max_len, "cannot handle more than %d PDU sessions\n", max_len);
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for (int i = 0; i < num; ++i) {
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pdu_session_config_t *pdu = configs + i;
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paramdef_t *p = pdu_sess_list.paramarray[i];
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int id = *gpd(p, npsp, "id")->iptr;
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pdu->id = id > 0 ? id : i + 1; // if not user-specified ID, use PDU session index
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pdu->type = config_get_processedint(config_get_if(), (paramdef_t *)gpd(p, npsp, "type"));
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pdu->nssai.sst = *gpd(p, npsp, "nssai_sst")->iptr;
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pdu->nssai.sd = *gpd(p, npsp, "nssai_sd")->iptr;
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pdu->dnn = strdup(*gpd(p, npsp, "dnn")->strptr);
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}
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return num;
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}
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