FreeCalypso > hg > osmo-playpen
annotate smsc-daemon/gsup_rx.c @ 5:cef4677a4cf8
smsc-daemon: the starting program is called osmo-euse-demo
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 25 Aug 2023 14:07:41 -0800 |
parents | 8680979baeb1 |
children | 81386a48c463 |
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1 /* |
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2 * This C module is part of proto-smsc-daemon concoction, a prototype/test |
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3 * implementation of a GSUP-based GSM SMSC. It is based on the osmo-euse-demo |
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4 * program from OsmoHLR package. |
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5 * |
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6 * proto-smsc-daemon author: Mychaela N. Falconia <falcon@freecalypso.org>, |
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7 * no copyright. |
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8 * |
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9 * osmo-euse-demo author: Harald Welte <laforge@gnumonks.org>, (C) 2018, AGPL3+ |
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10 */ |
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11 |
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12 #include <ctype.h> |
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13 #include <string.h> |
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14 #include <stdio.h> |
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15 #include <stdlib.h> |
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16 #include <errno.h> |
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17 #include <signal.h> |
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18 |
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19 #include <osmocom/core/msgb.h> |
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20 #include <osmocom/core/select.h> |
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21 #include <osmocom/core/application.h> |
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22 #include <osmocom/core/utils.h> |
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23 #include <osmocom/core/logging.h> |
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24 |
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25 #include <osmocom/gsm/gsup.h> |
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26 |
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27 #include <osmocom/gsupclient/gsup_client.h> |
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28 |
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29 #include "logging.h" |
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30 |
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31 extern void record_mo_sm(struct osmo_gsup_message *gmsg); |
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32 |
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33 static void send_gsup_response(struct osmo_gsup_client *gsupc, |
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34 struct osmo_gsup_message *orig_msg) |
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35 { |
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36 struct osmo_gsup_message resp = {0}; |
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37 struct msgb *resp_msg; |
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38 |
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39 resp.message_type = OSMO_GSUP_TO_MSGT_RESULT(orig_msg->message_type); |
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40 OSMO_STRLCPY_ARRAY(resp.imsi, orig_msg->imsi); |
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41 resp.message_class = OSMO_GSUP_MESSAGE_CLASS_SMS; |
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42 resp.sm_rp_mr = orig_msg->sm_rp_mr; |
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43 resp.destination_name = orig_msg->source_name; |
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44 resp.destination_name_len = orig_msg->source_name_len; |
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45 |
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46 resp_msg = osmo_gsup_client_msgb_alloc(); |
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47 OSMO_ASSERT(resp_msg); |
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48 osmo_gsup_encode(resp_msg, &resp); |
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49 osmo_gsup_client_send(gsupc, resp_msg); |
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50 } |
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51 |
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52 static void handle_mo_forward_sm(struct osmo_gsup_client *gsupc, |
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53 struct osmo_gsup_message *gmsg) |
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54 { |
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55 if (!gmsg->sm_rp_mr) { |
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56 LOGP(DMAIN, LOGL_ERROR, |
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57 "error in MO-FORWARD-SM: missing SM-RP-MR\n"); |
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58 return; |
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59 } |
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60 if (!gmsg->sm_rp_da_type) { |
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61 LOGP(DMAIN, LOGL_ERROR, |
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62 "error in MO-FORWARD-SM: missing SM-RP-DA\n"); |
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63 return; |
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64 } |
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65 if (!gmsg->sm_rp_oa_type) { |
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66 LOGP(DMAIN, LOGL_ERROR, |
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67 "error in MO-FORWARD-SM: missing SM-RP-OA\n"); |
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68 return; |
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69 } |
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70 if (!gmsg->sm_rp_ui) { |
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71 LOGP(DMAIN, LOGL_ERROR, |
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72 "error in MO-FORWARD-SM: missing SM-RP-UI\n"); |
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73 return; |
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74 } |
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75 record_mo_sm(gmsg); |
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76 send_gsup_response(gsupc, gmsg); |
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77 } |
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78 |
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79 static void handle_ready_for_sm(struct osmo_gsup_client *gsupc, |
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80 struct osmo_gsup_message *gmsg) |
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81 { |
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82 if (!gmsg->sm_rp_mr) { |
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83 LOGP(DMAIN, LOGL_ERROR, |
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84 "error in READY-FOR-SM: missing SM-RP-MR\n"); |
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85 return; |
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86 } |
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87 send_gsup_response(gsupc, gmsg); |
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88 } |
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89 |
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90 int gsupc_read_cb(struct osmo_gsup_client *gsupc, struct msgb *msg) |
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91 { |
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92 struct osmo_gsup_message gsup_msg = {0}; |
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93 int rc; |
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94 |
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95 rc = osmo_gsup_decode(msgb_l2(msg), msgb_l2len(msg), &gsup_msg); |
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96 if (rc < 0) { |
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97 LOGP(DMAIN, LOGL_ERROR, "Error decoding GSUP: %s\n", msgb_hexdump(msg)); |
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98 return rc; |
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99 } |
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100 DEBUGP(DMAIN, "Rx GSUP %s: %s\n", osmo_gsup_message_type_name(gsup_msg.message_type), |
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101 msgb_hexdump(msg)); |
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102 |
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103 switch (gsup_msg.message_type) { |
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104 case OSMO_GSUP_MSGT_MO_FORWARD_SM_REQUEST: |
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105 handle_mo_forward_sm(gsupc, &gsup_msg); |
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106 break; |
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107 case OSMO_GSUP_MSGT_READY_FOR_SM_REQUEST: |
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108 handle_ready_for_sm(gsupc, &gsup_msg); |
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109 break; |
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110 default: |
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111 LOGP(DMAIN, LOGL_ERROR, "Unhandled GSUP message type %s\n", |
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112 osmo_gsup_message_type_name(gsup_msg.message_type)); |
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113 break; |
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114 } |
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115 |
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116 msgb_free(msg); |
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117 return 0; |
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smsc-daemon: first version put together
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 } |