| /*! \file gsm0480.h */ |
| |
| #pragma once |
| |
| #include <osmocom/core/defs.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/gsm/protocol/gsm_04_08.h> |
| #include <osmocom/gsm/protocol/gsm_04_80.h> |
| |
| /** |
| * According to the GSM 04.80 (version 5.0.0) specification Annex A |
| * "Expanded ASN.1 Module "SS-Protocol", the maximum size of a USSD |
| * OCTET STRING field is 160 bytes. |
| */ |
| #define GSM0480_USSD_OCTET_STRING_LEN 160 |
| |
| /** |
| * Thus according to ETSI TS 123 038 (version 10.0.0) specification |
| * 6.1.2.3 "USSD packing of 7 bit characters", in 160 octets, it's |
| * possible to pack (160 * 8) / 7 = 182.8, that is 182 characters. |
| * The remaining 6 bits are set to zero. |
| */ |
| #define GSM0480_USSD_7BIT_STRING_LEN 182 |
| |
| /** |
| * DEPRECATED: this definition doesn't follow any specification, |
| * so we only keep it for compatibility reasons. It's strongly |
| * recommended to use correct definitions above. |
| */ |
| #define MAX_LEN_USSD_STRING 31 |
| |
| /* deprecated */ |
| struct ussd_request { |
| char text[MAX_LEN_USSD_STRING + 1]; |
| uint8_t transaction_id; |
| uint8_t invoke_id; |
| }; |
| |
| /* deprecated */ |
| int gsm0480_decode_ussd_request(const struct gsm48_hdr *hdr, uint16_t len, |
| struct ussd_request *request) OSMO_DEPRECATED("Use gsm0480_decode_ss_request() instead"); |
| |
| struct ss_request { |
| uint8_t opcode; |
| uint8_t ss_code; |
| uint8_t ussd_text[GSM0480_USSD_OCTET_STRING_LEN]; |
| uint8_t transaction_id; |
| uint8_t invoke_id; |
| }; |
| |
| int gsm0480_decode_ss_request(const struct gsm48_hdr *hdr, uint16_t len, |
| struct ss_request *request); |
| |
| struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const char *text); |
| struct msgb *gsm0480_create_unstructuredSS_Notify(int alertPattern, const char *text); |
| struct msgb *gsm0480_create_notifySS(const char *text); |
| struct msgb *gsm0480_create_ussd_notify(int level, const char *text); |
| struct msgb *gsm0480_create_ussd_release_complete(void); |
| |
| int gsm0480_wrap_invoke(struct msgb *msg, int op, int link_id); |
| int gsm0480_wrap_facility(struct msgb *msg); |
| |
| struct gsm48_hdr *gsm0480_l3hdr_push(struct msgb *msg, uint8_t proto_discr, |
| uint8_t msg_type); |