diff options
Diffstat (limited to 'src/libmsc/smpp_smsc.c')
-rw-r--r-- | src/libmsc/smpp_smsc.c | 1037 |
1 files changed, 0 insertions, 1037 deletions
diff --git a/src/libmsc/smpp_smsc.c b/src/libmsc/smpp_smsc.c deleted file mode 100644 index 04afc49bb..000000000 --- a/src/libmsc/smpp_smsc.c +++ /dev/null @@ -1,1037 +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 */ -int smpp_route(const struct smsc *smsc, const struct osmo_smpp_addr *dest, struct osmo_esme **pesme) -{ - 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) { - *pesme = esme; - return 0; - } else - LOGP(DSMPP, LOGL_NOTICE, "[%s] is matching route, " - "but not bound for Rx, discarding MO SMS\n", - esme->system_id); - } - - *pesme = NULL; - if (acl) - return GSM48_CC_CAUSE_NETWORK_OOO; - else - return GSM48_CC_CAUSE_UNASSIGNED_NR; -} - - -/*! \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); - - LOGP(DSMPP, LOGL_DEBUG, "[%s] Tx DELIVER-SM (from %s)\n", - esme->system_id, deliver->source_addr); - - 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); - } -} |