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-rw-r--r--openbsc/src/libmsc/smpp_smsc.c1030
1 files changed, 0 insertions, 1030 deletions
diff --git a/openbsc/src/libmsc/smpp_smsc.c b/openbsc/src/libmsc/smpp_smsc.c
deleted file mode 100644
index 48a119261..000000000
--- a/openbsc/src/libmsc/smpp_smsc.c
+++ /dev/null
@@ -1,1030 +0,0 @@
-/* SMPP 3.4 interface, SMSC-side implementation */
-/* (C) 2012 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdint.h>
-#include <errno.h>
-#include <limits.h>
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-
-#include <smpp34.h>
-#include <smpp34_structs.h>
-#include <smpp34_params.h>
-
-#include <osmocom/core/utils.h>
-#include <osmocom/core/socket.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-#include <osmocom/core/write_queue.h>
-#include <osmocom/core/talloc.h>
-
-#include "smpp_smsc.h"
-
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-
-/*! \brief Ugly wrapper. libsmpp34 should do this itself! */
-#define SMPP34_UNPACK(rc, type, str, data, len) \
- memset(str, 0, sizeof(*str)); \
- rc = smpp34_unpack(type, str, data, len)
-
-enum emse_bind {
- ESME_BIND_RX = 0x01,
- ESME_BIND_TX = 0x02,
-};
-
-const struct value_string smpp_status_strs[] = {
- { ESME_ROK, "No Error" },
- { ESME_RINVMSGLEN, "Message Length is invalid" },
- { ESME_RINVCMDLEN, "Command Length is invalid" },
- { ESME_RINVCMDID, "Invalid Command ID" },
- { ESME_RINVBNDSTS, "Incorrect BIND Status for given command" },
- { ESME_RALYBND, "ESME Already in Bound State" },
- { ESME_RINVPRTFLG, "Invalid Priority Flag" },
- { ESME_RINVREGDLVFLG, "Invalid Registered Delivery Flag" },
- { ESME_RSYSERR, "System Error" },
- { ESME_RINVSRCADR, "Invalid Source Address" },
- { ESME_RINVDSTADR, "Invalid Destination Address" },
- { ESME_RINVMSGID, "Message ID is invalid" },
- { ESME_RBINDFAIL, "Bind failed" },
- { ESME_RINVPASWD, "Invalid Password" },
- { ESME_RINVSYSID, "Invalid System ID" },
- { ESME_RCANCELFAIL, "Cancel SM Failed" },
- { ESME_RREPLACEFAIL, "Replace SM Failed" },
- { ESME_RMSGQFUL, "Message Queue Full" },
- { ESME_RINVSERTYP, "Invalid Service Type" },
- { ESME_RINVNUMDESTS, "Invalid number of destinations" },
- { ESME_RINVDLNAME, "Invalid Distribution List name" },
- { ESME_RINVDESTFLAG, "Destination flag is invalid" },
- { ESME_RINVSUBREP, "Invalid submit with replace request" },
- { ESME_RINVESMCLASS, "Invalid esm_class field data" },
- { ESME_RCNTSUBDL, "Cannot Submit to Distribution List" },
- { ESME_RSUBMITFAIL, "submit_sm or submit_multi failed" },
- { ESME_RINVSRCTON, "Invalid Source address TON" },
- { ESME_RINVSRCNPI, "Invalid Sourec address NPI" },
- { ESME_RINVDSTTON, "Invalid Destination address TON" },
- { ESME_RINVDSTNPI, "Invalid Desetination address NPI" },
- { ESME_RINVSYSTYP, "Invalid system_type field" },
- { ESME_RINVREPFLAG, "Invalid replace_if_present field" },
- { ESME_RINVNUMMSGS, "Invalid number of messages" },
- { ESME_RTHROTTLED, "Throttling error (ESME has exceeded message limits)" },
- { ESME_RINVSCHED, "Invalid Scheduled Delivery Time" },
- { ESME_RINVEXPIRY, "Invalid message validity period (Expiry time)" },
- { ESME_RINVDFTMSGID, "Predefined Message Invalid or Not Found" },
- { ESME_RX_T_APPN, "ESME Receiver Temporary App Error Code" },
- { ESME_RX_P_APPN, "ESME Receiver Permanent App Error Code" },
- { ESME_RX_R_APPN, "ESME Receiver Reject Message Error Code" },
- { ESME_RQUERYFAIL, "query_sm request failed" },
- { ESME_RINVOPTPARSTREAM,"Error in the optional part of the PDU Body" },
- { ESME_ROPTPARNOTALLWD, "Optional Parameter not allowed" },
- { ESME_RINVPARLEN, "Invalid Parameter Length" },
- { ESME_RMISSINGOPTPARAM,"Expected Optional Parameter missing" },
- { ESME_RINVOPTPARAMVAL, "Invalid Optional Parameter Value" },
- { ESME_RDELIVERYFAILURE,"Delivery Failure (used for data_sm_resp)" },
- { ESME_RUNKNOWNERR, "Unknown Error" },
- { 0, NULL }
-};
-
-/*! \brief compare if two SMPP addresses are equal */
-int smpp_addr_eq(const struct osmo_smpp_addr *a,
- const struct osmo_smpp_addr *b)
-{
- if (a->ton == b->ton &&
- a->npi == b->npi &&
- !strcmp(a->addr, b->addr))
- return 1;
-
- return 0;
-}
-
-
-struct osmo_smpp_acl *smpp_acl_by_system_id(struct smsc *smsc,
- const char *sys_id)
-{
- struct osmo_smpp_acl *acl;
-
- llist_for_each_entry(acl, &smsc->acl_list, list) {
- if (!strcmp(acl->system_id, sys_id))
- return acl;
- }
-
- return NULL;
-}
-
-struct osmo_smpp_acl *smpp_acl_alloc(struct smsc *smsc, const char *sys_id)
-{
- struct osmo_smpp_acl *acl;
-
- if (strlen(sys_id) > SMPP_SYS_ID_LEN)
- return NULL;
-
- if (smpp_acl_by_system_id(smsc, sys_id))
- return NULL;
-
- acl = talloc_zero(smsc, struct osmo_smpp_acl);
- if (!acl)
- return NULL;
-
- acl->smsc = smsc;
- strcpy(acl->system_id, sys_id);
- INIT_LLIST_HEAD(&acl->route_list);
-
- llist_add_tail(&acl->list, &smsc->acl_list);
-
- return acl;
-}
-
-void smpp_acl_delete(struct osmo_smpp_acl *acl)
-{
- struct osmo_smpp_route *r, *r2;
-
- llist_del(&acl->list);
-
- /* kill any active ESMEs */
- if (acl->esme) {
- struct osmo_esme *esme = acl->esme;
- osmo_fd_unregister(&esme->wqueue.bfd);
- close(esme->wqueue.bfd.fd);
- esme->wqueue.bfd.fd = -1;
- esme->acl = NULL;
- smpp_esme_put(esme);
- }
-
- /* delete all routes for this ACL */
- llist_for_each_entry_safe(r, r2, &acl->route_list, list) {
- llist_del(&r->list);
- llist_del(&r->global_list);
- talloc_free(r);
- }
-
- talloc_free(acl);
-}
-
-static struct osmo_smpp_route *route_alloc(struct osmo_smpp_acl *acl)
-{
- struct osmo_smpp_route *r;
-
- r = talloc_zero(acl, struct osmo_smpp_route);
- if (!r)
- return NULL;
-
- llist_add_tail(&r->list, &acl->route_list);
- llist_add_tail(&r->global_list, &acl->smsc->route_list);
-
- return r;
-}
-
-int smpp_route_pfx_add(struct osmo_smpp_acl *acl,
- const struct osmo_smpp_addr *pfx)
-{
- struct osmo_smpp_route *r;
-
- llist_for_each_entry(r, &acl->route_list, list) {
- if (r->type == SMPP_ROUTE_PREFIX &&
- smpp_addr_eq(&r->u.prefix, pfx))
- return -EEXIST;
- }
-
- r = route_alloc(acl);
- if (!r)
- return -ENOMEM;
- r->type = SMPP_ROUTE_PREFIX;
- r->acl = acl;
- memcpy(&r->u.prefix, pfx, sizeof(r->u.prefix));
-
- return 0;
-}
-
-int smpp_route_pfx_del(struct osmo_smpp_acl *acl,
- const struct osmo_smpp_addr *pfx)
-{
- struct osmo_smpp_route *r, *r2;
-
- llist_for_each_entry_safe(r, r2, &acl->route_list, list) {
- if (r->type == SMPP_ROUTE_PREFIX &&
- smpp_addr_eq(&r->u.prefix, pfx)) {
- llist_del(&r->list);
- talloc_free(r);
- return 0;
- }
- }
-
- return -ENODEV;
-}
-
-
-/*! \brief increaes the use/reference count */
-void smpp_esme_get(struct osmo_esme *esme)
-{
- esme->use++;
-}
-
-static void esme_destroy(struct osmo_esme *esme)
-{
- osmo_wqueue_clear(&esme->wqueue);
- if (esme->wqueue.bfd.fd >= 0) {
- osmo_fd_unregister(&esme->wqueue.bfd);
- close(esme->wqueue.bfd.fd);
- }
- smpp_cmd_flush_pending(esme);
- llist_del(&esme->list);
- talloc_free(esme);
-}
-
-static uint32_t esme_inc_seq_nr(struct osmo_esme *esme)
-{
- esme->own_seq_nr++;
- if (esme->own_seq_nr > 0x7fffffff)
- esme->own_seq_nr = 1;
-
- return esme->own_seq_nr;
-}
-
-/*! \brief decrease the use/reference count, free if it is 0 */
-void smpp_esme_put(struct osmo_esme *esme)
-{
- esme->use--;
- if (esme->use <= 0)
- esme_destroy(esme);
-}
-
-/*! \brief try to find a SMPP route (ESME) for given destination */
-struct osmo_esme *
-smpp_route(const struct smsc *smsc, const struct osmo_smpp_addr *dest)
-{
- struct osmo_smpp_route *r;
- struct osmo_smpp_acl *acl = NULL;
-
- DEBUGP(DSMPP, "Looking up route for (%u/%u/%s)\n",
- dest->ton, dest->npi, dest->addr);
-
- /* search for a specific route */
- llist_for_each_entry(r, &smsc->route_list, global_list) {
- switch (r->type) {
- case SMPP_ROUTE_PREFIX:
- DEBUGP(DSMPP, "Checking prefix route (%u/%u/%s)->%s\n",
- r->u.prefix.ton, r->u.prefix.npi, r->u.prefix.addr,
- r->acl->system_id);
- if (r->u.prefix.ton == dest->ton &&
- r->u.prefix.npi == dest->npi &&
- !strncmp(r->u.prefix.addr, dest->addr,
- strlen(r->u.prefix.addr))) {
- DEBUGP(DSMPP, "Found prefix route ACL\n");
- acl = r->acl;
- }
- break;
- default:
- break;
- }
-
- if (acl)
- break;
- }
-
- if (!acl) {
- /* check for default route */
- if (smsc->def_route) {
- DEBUGP(DSMPP, "Using existing default route\n");
- acl = smsc->def_route;
- }
- }
-
- if (acl && acl->esme) {
- struct osmo_esme *esme;
- DEBUGP(DSMPP, "ACL even has ESME, we can route to it!\n");
- esme = acl->esme;
- if (esme->bind_flags & ESME_BIND_RX)
- return esme;
- else
- LOGP(DSMPP, LOGL_NOTICE, "[%s] is matching route, "
- "but not bound for Rx, discarding MO SMS\n",
- esme->system_id);
- }
-
- return NULL;
-}
-
-
-/*! \brief initialize the libsmpp34 data structure for a response */
-#define INIT_RESP(type, resp, req) { \
- memset((resp), 0, sizeof(*(resp))); \
- (resp)->command_length = 0; \
- (resp)->command_id = type; \
- (resp)->command_status = ESME_ROK; \
- (resp)->sequence_number = (req)->sequence_number; \
-}
-
-/*! \brief pack a libsmpp34 data strcutrure and send it to the ESME */
-#define PACK_AND_SEND(esme, ptr) pack_and_send(esme, (ptr)->command_id, ptr)
-static int pack_and_send(struct osmo_esme *esme, uint32_t type, void *ptr)
-{
- struct msgb *msg = msgb_alloc(4096, "SMPP_Tx");
- int rc, rlen;
- if (!msg)
- return -ENOMEM;
-
- rc = smpp34_pack(type, msg->tail, msgb_tailroom(msg), &rlen, ptr);
- if (rc != 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error during smpp34_pack(): %s\n",
- esme->system_id, smpp34_strerror);
- msgb_free(msg);
- return -EINVAL;
- }
- msgb_put(msg, rlen);
-
- if (osmo_wqueue_enqueue(&esme->wqueue, msg) != 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Write queue full. Dropping message\n",
- esme->system_id);
- msgb_free(msg);
- return -EAGAIN;
- }
- return 0;
-}
-
-/*! \brief transmit a generic NACK to a remote ESME */
-static int smpp_tx_gen_nack(struct osmo_esme *esme, uint32_t seq, uint32_t status)
-{
- struct generic_nack_t nack;
- char buf[SMALL_BUFF];
-
- nack.command_length = 0;
- nack.command_id = GENERIC_NACK;
- nack.sequence_number = seq;
- nack.command_status = status;
-
- LOGP(DSMPP, LOGL_ERROR, "[%s] Tx GENERIC NACK: %s\n",
- esme->system_id, str_command_status(status, buf));
-
- return PACK_AND_SEND(esme, &nack);
-}
-
-/*! \brief retrieve SMPP command ID from a msgb */
-static inline uint32_t smpp_msgb_cmdid(struct msgb *msg)
-{
- uint8_t *tmp = msgb_data(msg) + 4;
- return ntohl(*(uint32_t *)tmp);
-}
-
-/*! \brief retrieve SMPP sequence number from a msgb */
-static inline uint32_t smpp_msgb_seq(struct msgb *msg)
-{
- uint8_t *tmp = msgb_data(msg);
- return ntohl(*(uint32_t *)tmp);
-}
-
-/*! \brief handle an incoming SMPP generic NACK */
-static int smpp_handle_gen_nack(struct osmo_esme *esme, struct msgb *msg)
-{
- struct generic_nack_t nack;
- char buf[SMALL_BUFF];
- int rc;
-
- SMPP34_UNPACK(rc, GENERIC_NACK, &nack, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- LOGP(DSMPP, LOGL_ERROR, "[%s] Rx GENERIC NACK: %s\n",
- esme->system_id, str_command_status(nack.command_status, buf));
-
- return 0;
-}
-
-static int _process_bind(struct osmo_esme *esme, uint8_t if_version,
- uint32_t bind_flags, const char *sys_id,
- const char *passwd)
-{
- struct osmo_smpp_acl *acl;
-
- if (if_version != SMPP_VERSION)
- return ESME_RSYSERR;
-
- if (esme->bind_flags)
- return ESME_RALYBND;
-
- esme->smpp_version = if_version;
- snprintf(esme->system_id, sizeof(esme->system_id), "%s", sys_id);
-
- acl = smpp_acl_by_system_id(esme->smsc, esme->system_id);
- if (!esme->smsc->accept_all) {
- if (!acl) {
- /* This system is unknown */
- return ESME_RINVSYSID;
- } else {
- if (strlen(acl->passwd) &&
- strcmp(acl->passwd, passwd)) {
- return ESME_RINVPASWD;
- }
- }
- }
- if (acl) {
- esme->acl = acl;
- acl->esme = esme;
- }
-
- esme->bind_flags = bind_flags;
-
- return ESME_ROK;
-}
-
-
-/*! \brief handle an incoming SMPP BIND RECEIVER */
-static int smpp_handle_bind_rx(struct osmo_esme *esme, struct msgb *msg)
-{
- struct bind_receiver_t bind;
- struct bind_receiver_resp_t bind_r;
- int rc;
-
- SMPP34_UNPACK(rc, BIND_RECEIVER, &bind, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- INIT_RESP(BIND_TRANSMITTER_RESP, &bind_r, &bind);
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Rx from (Version %02x)\n",
- bind.system_id, bind.interface_version);
-
- rc = _process_bind(esme, bind.interface_version, ESME_BIND_RX,
- (const char *)bind.system_id, (const char *)bind.password);
- bind_r.command_status = rc;
-
- return PACK_AND_SEND(esme, &bind_r);
-}
-
-/*! \brief handle an incoming SMPP BIND TRANSMITTER */
-static int smpp_handle_bind_tx(struct osmo_esme *esme, struct msgb *msg)
-{
- struct bind_transmitter_t bind;
- struct bind_transmitter_resp_t bind_r;
- struct tlv_t tlv;
- int rc;
-
- SMPP34_UNPACK(rc, BIND_TRANSMITTER, &bind, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- INIT_RESP(BIND_TRANSMITTER_RESP, &bind_r, &bind);
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Tx (Version %02x)\n",
- bind.system_id, bind.interface_version);
-
- rc = _process_bind(esme, bind.interface_version, ESME_BIND_TX,
- (const char *)bind.system_id, (const char *)bind.password);
- bind_r.command_status = rc;
-
- /* build response */
- snprintf((char *)bind_r.system_id, sizeof(bind_r.system_id), "%s",
- esme->smsc->system_id);
-
- /* add interface version TLV */
- tlv.tag = TLVID_sc_interface_version;
- tlv.length = sizeof(uint8_t);
- tlv.value.val16 = esme->smpp_version;
- build_tlv(&bind_r.tlv, &tlv);
-
- return PACK_AND_SEND(esme, &bind_r);
-}
-
-/*! \brief handle an incoming SMPP BIND TRANSCEIVER */
-static int smpp_handle_bind_trx(struct osmo_esme *esme, struct msgb *msg)
-{
- struct bind_transceiver_t bind;
- struct bind_transceiver_resp_t bind_r;
- int rc;
-
- SMPP34_UNPACK(rc, BIND_TRANSCEIVER, &bind, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- INIT_RESP(BIND_TRANSCEIVER_RESP, &bind_r, &bind);
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Trx (Version %02x)\n",
- bind.system_id, bind.interface_version);
-
- rc = _process_bind(esme, bind.interface_version, ESME_BIND_RX|ESME_BIND_TX,
- (const char *)bind.system_id, (const char *)bind.password);
- bind_r.command_status = rc;
-
- return PACK_AND_SEND(esme, &bind_r);
-}
-
-/*! \brief handle an incoming SMPP UNBIND */
-static int smpp_handle_unbind(struct osmo_esme *esme, struct msgb *msg)
-{
- struct unbind_t unbind;
- struct unbind_resp_t unbind_r;
- int rc;
-
- SMPP34_UNPACK(rc, UNBIND, &unbind, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- INIT_RESP(UNBIND_RESP, &unbind_r, &unbind);
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx UNBIND\n", esme->system_id);
-
- if (esme->bind_flags == 0) {
- unbind_r.command_status = ESME_RINVBNDSTS;
- goto err;
- }
-
- esme->bind_flags = 0;
-err:
- return PACK_AND_SEND(esme, &unbind_r);
-}
-
-/*! \brief handle an incoming SMPP ENQUIRE LINK */
-static int smpp_handle_enq_link(struct osmo_esme *esme, struct msgb *msg)
-{
- struct enquire_link_t enq;
- struct enquire_link_resp_t enq_r;
- int rc;
-
- SMPP34_UNPACK(rc, ENQUIRE_LINK, &enq, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- LOGP(DSMPP, LOGL_DEBUG, "[%s] Rx Enquire Link\n", esme->system_id);
-
- INIT_RESP(ENQUIRE_LINK_RESP, &enq_r, &enq);
-
- LOGP(DSMPP, LOGL_DEBUG, "[%s] Tx Enquire Link Response\n", esme->system_id);
-
- return PACK_AND_SEND(esme, &enq_r);
-}
-
-/*! \brief send a SUBMIT-SM RESPONSE to a remote ESME */
-int smpp_tx_submit_r(struct osmo_esme *esme, uint32_t sequence_nr,
- uint32_t command_status, char *msg_id)
-{
- struct submit_sm_resp_t submit_r;
-
- memset(&submit_r, 0, sizeof(submit_r));
- submit_r.command_length = 0;
- submit_r.command_id = SUBMIT_SM_RESP;
- submit_r.command_status = command_status;
- submit_r.sequence_number= sequence_nr;
- snprintf((char *) submit_r.message_id, sizeof(submit_r.message_id), "%s", msg_id);
-
- return PACK_AND_SEND(esme, &submit_r);
-}
-
-static const struct value_string smpp_avail_strs[] = {
- { 0, "Available" },
- { 1, "Denied" },
- { 2, "Unavailable" },
- { 0, NULL }
-};
-
-/*! \brief send an ALERT_NOTIFICATION to a remote ESME */
-int smpp_tx_alert(struct osmo_esme *esme, uint8_t ton, uint8_t npi,
- const char *addr, uint8_t avail_status)
-{
- struct alert_notification_t alert;
- struct tlv_t tlv;
-
- memset(&alert, 0, sizeof(alert));
- alert.command_length = 0;
- alert.command_id = ALERT_NOTIFICATION;
- alert.command_status = ESME_ROK;
- alert.sequence_number = esme_inc_seq_nr(esme);
- alert.source_addr_ton = ton;
- alert.source_addr_npi = npi;
- snprintf((char *)alert.source_addr, sizeof(alert.source_addr), "%s", addr);
-
- tlv.tag = TLVID_ms_availability_status;
- tlv.length = sizeof(uint8_t);
- tlv.value.val08 = avail_status;
- build_tlv(&alert.tlv, &tlv);
-
- LOGP(DSMPP, LOGL_DEBUG, "[%s] Tx ALERT_NOTIFICATION (%s/%u/%u): %s\n",
- esme->system_id, alert.source_addr, alert.source_addr_ton,
- alert.source_addr_npi,
- get_value_string(smpp_avail_strs, avail_status));
-
- return PACK_AND_SEND(esme, &alert);
-}
-
-/* \brief send a DELIVER-SM message to given ESME */
-int smpp_tx_deliver(struct osmo_esme *esme, struct deliver_sm_t *deliver)
-{
- deliver->sequence_number = esme_inc_seq_nr(esme);
-
- return PACK_AND_SEND(esme, deliver);
-}
-
-/*! \brief handle an incoming SMPP DELIVER-SM RESPONSE */
-static int smpp_handle_deliver_resp(struct osmo_esme *esme, struct msgb *msg)
-{
- struct deliver_sm_resp_t deliver_r;
- struct osmo_smpp_cmd *cmd;
- int rc;
-
- memset(&deliver_r, 0, sizeof(deliver_r));
- SMPP34_UNPACK(rc, DELIVER_SM_RESP, &deliver_r, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- cmd = smpp_cmd_find_by_seqnum(esme, deliver_r.sequence_number);
- if (!cmd) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Rx DELIVER-SM RESP !? (%s)\n",
- esme->system_id, get_value_string(smpp_status_strs,
- deliver_r.command_status));
- return -1;
- }
-
- if (deliver_r.command_status == ESME_ROK)
- smpp_cmd_ack(cmd);
- else
- smpp_cmd_err(cmd, deliver_r.command_status);
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx DELIVER-SM RESP (%s)\n",
- esme->system_id, get_value_string(smpp_status_strs,
- deliver_r.command_status));
-
- return 0;
-}
-
-/*! \brief handle an incoming SMPP SUBMIT-SM */
-static int smpp_handle_submit(struct osmo_esme *esme, struct msgb *msg)
-{
- struct submit_sm_t submit;
- struct submit_sm_resp_t submit_r;
- int rc;
-
- memset(&submit, 0, sizeof(submit));
- SMPP34_UNPACK(rc, SUBMIT_SM, &submit, msgb_data(msg),
- msgb_length(msg));
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n",
- esme->system_id, smpp34_strerror);
- return rc;
- }
-
- INIT_RESP(SUBMIT_SM_RESP, &submit_r, &submit);
-
- if (!(esme->bind_flags & ESME_BIND_TX)) {
- submit_r.command_status = ESME_RINVBNDSTS;
- return PACK_AND_SEND(esme, &submit_r);
- }
-
- LOGP(DSMPP, LOGL_INFO, "[%s] Rx SUBMIT-SM (%s/%u/%u)\n",
- esme->system_id, submit.destination_addr,
- submit.dest_addr_ton, submit.dest_addr_npi);
-
- INIT_RESP(SUBMIT_SM_RESP, &submit_r, &submit);
-
- rc = handle_smpp_submit(esme, &submit, &submit_r);
- if (rc == 0)
- return PACK_AND_SEND(esme, &submit_r);
-
- return rc;
-}
-
-/*! \brief one complete SMPP PDU from the ESME has been received */
-static int smpp_pdu_rx(struct osmo_esme *esme, struct msgb *msg __uses)
-{
- uint32_t cmd_id = smpp_msgb_cmdid(msg);
- int rc = 0;
-
- LOGP(DSMPP, LOGL_DEBUG, "[%s] smpp_pdu_rx(%s)\n", esme->system_id,
- osmo_hexdump(msgb_data(msg), msgb_length(msg)));
-
- switch (cmd_id) {
- case GENERIC_NACK:
- rc = smpp_handle_gen_nack(esme, msg);
- break;
- case BIND_RECEIVER:
- rc = smpp_handle_bind_rx(esme, msg);
- break;
- case BIND_TRANSMITTER:
- rc = smpp_handle_bind_tx(esme, msg);
- break;
- case BIND_TRANSCEIVER:
- rc = smpp_handle_bind_trx(esme, msg);
- break;
- case UNBIND:
- rc = smpp_handle_unbind(esme, msg);
- break;
- case ENQUIRE_LINK:
- rc = smpp_handle_enq_link(esme, msg);
- break;
- case SUBMIT_SM:
- rc = smpp_handle_submit(esme, msg);
- break;
- case DELIVER_SM_RESP:
- rc = smpp_handle_deliver_resp(esme, msg);
- break;
- case DELIVER_SM:
- break;
- case DATA_SM:
- break;
- case CANCEL_SM:
- case QUERY_SM:
- case REPLACE_SM:
- case SUBMIT_MULTI:
- LOGP(DSMPP, LOGL_NOTICE, "[%s] Unimplemented PDU Command "
- "0x%08x\n", esme->system_id, cmd_id);
- break;
- default:
- LOGP(DSMPP, LOGL_ERROR, "[%s] Unknown PDU Command 0x%08x\n",
- esme->system_id, cmd_id);
- rc = smpp_tx_gen_nack(esme, smpp_msgb_seq(msg), ESME_RINVCMDID);
- break;
- }
-
- return rc;
-}
-
-/* This macro should be called after a call to read() in the read_cb of an
- * osmo_fd to properly check for errors.
- * rc is the return value of read, err_label is the label to jump to in case of
- * an error. The code there should handle closing the connection.
- * FIXME: This code should go in libosmocore utils.h so it can be used by other
- * projects as well.
- * */
-#define OSMO_FD_CHECK_READ(rc, err_label) \
- if (rc < 0) { \
- /* EINTR is a non-fatal error, just try again */ \
- if (errno == EINTR) \
- return 0; \
- goto err_label; \
- } else if (rc == 0) { \
- goto err_label; \
- }
-
-/* !\brief call-back when per-ESME TCP socket has some data to be read */
-static int esme_link_read_cb(struct osmo_fd *ofd)
-{
- struct osmo_esme *esme = ofd->data;
- uint32_t len;
- uint8_t *lenptr = (uint8_t *) &len;
- uint8_t *cur;
- struct msgb *msg;
- ssize_t rdlen, rc;
-
- switch (esme->read_state) {
- case READ_ST_IN_LEN:
- rdlen = sizeof(uint32_t) - esme->read_idx;
- rc = read(ofd->fd, lenptr + esme->read_idx, rdlen);
- if (rc < 0)
- LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %zd (%s)\n",
- esme->system_id, rc, strerror(errno));
- OSMO_FD_CHECK_READ(rc, dead_socket);
-
- esme->read_idx += rc;
-
- if (esme->read_idx >= sizeof(uint32_t)) {
- esme->read_len = ntohl(len);
- if (esme->read_len < 8 || esme->read_len > UINT16_MAX) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] length invalid %u\n",
- esme->system_id, esme->read_len);
- goto dead_socket;
- }
-
- msg = msgb_alloc(esme->read_len, "SMPP Rx");
- if (!msg)
- return -ENOMEM;
- esme->read_msg = msg;
- cur = msgb_put(msg, sizeof(uint32_t));
- memcpy(cur, lenptr, sizeof(uint32_t));
- esme->read_state = READ_ST_IN_MSG;
- esme->read_idx = sizeof(uint32_t);
- }
- break;
- case READ_ST_IN_MSG:
- msg = esme->read_msg;
- rdlen = esme->read_len - esme->read_idx;
- rc = read(ofd->fd, msg->tail, OSMO_MIN(rdlen, msgb_tailroom(msg)));
- if (rc < 0)
- LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %zd (%s)\n",
- esme->system_id, rc, strerror(errno));
- OSMO_FD_CHECK_READ(rc, dead_socket);
-
- esme->read_idx += rc;
- msgb_put(msg, rc);
-
- if (esme->read_idx >= esme->read_len) {
- rc = smpp_pdu_rx(esme, esme->read_msg);
- msgb_free(esme->read_msg);
- esme->read_msg = NULL;
- esme->read_idx = 0;
- esme->read_len = 0;
- esme->read_state = READ_ST_IN_LEN;
- }
- break;
- }
-
- return 0;
-dead_socket:
- msgb_free(esme->read_msg);
- osmo_fd_unregister(&esme->wqueue.bfd);
- close(esme->wqueue.bfd.fd);
- esme->wqueue.bfd.fd = -1;
- smpp_esme_put(esme);
-
- return 0;
-}
-
-/* call-back of write queue once it wishes to write a message to the socket */
-static int esme_link_write_cb(struct osmo_fd *ofd, struct msgb *msg)
-{
- struct osmo_esme *esme = ofd->data;
- int rc;
-
- rc = write(ofd->fd, msgb_data(msg), msgb_length(msg));
- if (rc == 0) {
- osmo_fd_unregister(&esme->wqueue.bfd);
- close(esme->wqueue.bfd.fd);
- esme->wqueue.bfd.fd = -1;
- smpp_esme_put(esme);
- } else if (rc < msgb_length(msg)) {
- LOGP(DSMPP, LOGL_ERROR, "[%s] Short write\n", esme->system_id);
- return -1;
- }
-
- return 0;
-}
-
-/* callback for already-accepted new TCP socket */
-static int link_accept_cb(struct smsc *smsc, int fd,
- struct sockaddr_storage *s, socklen_t s_len)
-{
- struct osmo_esme *esme = talloc_zero(smsc, struct osmo_esme);
- if (!esme) {
- close(fd);
- return -ENOMEM;
- }
-
- INIT_LLIST_HEAD(&esme->smpp_cmd_list);
- smpp_esme_get(esme);
- esme->own_seq_nr = rand();
- esme_inc_seq_nr(esme);
- esme->smsc = smsc;
- osmo_wqueue_init(&esme->wqueue, 10);
- esme->wqueue.bfd.fd = fd;
- esme->wqueue.bfd.data = esme;
- esme->wqueue.bfd.when = BSC_FD_READ;
-
- if (osmo_fd_register(&esme->wqueue.bfd) != 0) {
- close(fd);
- talloc_free(esme);
- return -EIO;
- }
-
- esme->wqueue.read_cb = esme_link_read_cb;
- esme->wqueue.write_cb = esme_link_write_cb;
-
- esme->sa_len = OSMO_MIN(sizeof(esme->sa), s_len);
- memcpy(&esme->sa, s, esme->sa_len);
-
- llist_add_tail(&esme->list, &smsc->esme_list);
-
- return 0;
-}
-
-/* callback of listening TCP socket */
-static int smsc_fd_cb(struct osmo_fd *ofd, unsigned int what)
-{
- int rc;
- struct sockaddr_storage sa;
- socklen_t sa_len = sizeof(sa);
-
- rc = accept(ofd->fd, (struct sockaddr *)&sa, &sa_len);
- if (rc < 0) {
- LOGP(DSMPP, LOGL_ERROR, "Accept returns %d (%s)\n",
- rc, strerror(errno));
- return rc;
- }
- return link_accept_cb(ofd->data, rc, &sa, sa_len);
-}
-
-/*! \brief allocate and initialize an smsc struct from talloc context ctx. */
-struct smsc *smpp_smsc_alloc_init(void *ctx)
-{
- struct smsc *smsc = talloc_zero(ctx, struct smsc);
-
- INIT_LLIST_HEAD(&smsc->esme_list);
- INIT_LLIST_HEAD(&smsc->acl_list);
- INIT_LLIST_HEAD(&smsc->route_list);
-
- smsc->listen_ofd.data = smsc;
- smsc->listen_ofd.cb = smsc_fd_cb;
-
- return smsc;
-}
-
-/*! \brief Set the SMPP address and port without binding. */
-int smpp_smsc_conf(struct smsc *smsc, const char *bind_addr, uint16_t port)
-{
- talloc_free((void*)smsc->bind_addr);
- smsc->bind_addr = NULL;
- if (bind_addr) {
- smsc->bind_addr = talloc_strdup(smsc, bind_addr);
- if (!smsc->bind_addr)
- return -ENOMEM;
- }
- smsc->listen_port = port;
- return 0;
-}
-
-/*! \brief Bind to given address and port and accept connections.
- * \param[in] bind_addr Local IP address, may be NULL for any.
- * \param[in] port TCP port number, may be 0 for default SMPP (2775).
- */
-int smpp_smsc_start(struct smsc *smsc, const char *bind_addr, uint16_t port)
-{
- int rc;
-
- /* default port for SMPP */
- if (!port)
- port = 2775;
-
- smpp_smsc_stop(smsc);
-
- LOGP(DSMPP, LOGL_NOTICE, "SMPP at %s %d\n",
- bind_addr? bind_addr : "0.0.0.0", port);
-
- rc = osmo_sock_init_ofd(&smsc->listen_ofd, AF_UNSPEC, SOCK_STREAM,
- IPPROTO_TCP, bind_addr, port,
- OSMO_SOCK_F_BIND);
- if (rc < 0)
- return rc;
-
- /* store new address and port */
- rc = smpp_smsc_conf(smsc, bind_addr, port);
- if (rc)
- smpp_smsc_stop(smsc);
- return rc;
-}
-
-/*! \brief Change a running connection to a different address/port, and upon
- * error switch back to the running configuration. */
-int smpp_smsc_restart(struct smsc *smsc, const char *bind_addr, uint16_t port)
-{
- int rc;
-
- rc = smpp_smsc_start(smsc, bind_addr, port);
- if (rc)
- /* if there is an error, try to re-bind to the old port */
- return smpp_smsc_start(smsc, smsc->bind_addr, smsc->listen_port);
- return 0;
-}
-
-/*! /brief Close SMPP connection. */
-void smpp_smsc_stop(struct smsc *smsc)
-{
- if (smsc->listen_ofd.fd > 0) {
- close(smsc->listen_ofd.fd);
- smsc->listen_ofd.fd = 0;
- osmo_fd_unregister(&smsc->listen_ofd);
- }
-}