import GSM04.08 encode/decode functions and mncc.h from openbsc
This commit is contained in:
parent
f8b2ba7dc8
commit
1e9086684f
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@ -1,6 +1,7 @@
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osmocore_HEADERS = signal.h linuxlist.h timer.h select.h msgb.h \
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tlv.h bitvec.h comp128.h statistics.h gsm_utils.h utils.h \
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gsmtap.h write_queue.h rsl.h gsm48.h rxlev_stat.h
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gsmtap.h write_queue.h rsl.h gsm48.h rxlev_stat.h mncc.h \
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gsm48_ie.h
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if ENABLE_TALLOC
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osmocore_HEADERS += talloc.h
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@ -2,6 +2,7 @@
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#include <osmocore/tlv.h>
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#include <osmocore/protocol/gsm_04_08.h>
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#include <osmocore/gsm48_ie.h>
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extern const struct tlv_definition gsm48_att_tlvdef;
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extern const char *cc_state_names[32];
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@ -0,0 +1,107 @@
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#ifndef _OSMOCORE_GSM48_IE_H
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#define _OSMOCORE_GSM48_IE_H
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <osmocore/msgb.h>
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#include <osmocore/tlv.h>
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#include <osmocore/mncc.h>
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#include <osmocore/protocol/gsm_04_08.h>
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/* decode a 'called/calling/connect party BCD number' as in 10.5.4.7 */
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int gsm48_decode_bcd_number(char *output, int output_len,
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const uint8_t *bcd_lv, int h_len);
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/* convert a ASCII phone number to 'called/calling/connect party BCD number' */
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int gsm48_encode_bcd_number(uint8_t *bcd_lv, uint8_t max_len,
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int h_len, const char *input);
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/* decode 'bearer capability' */
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int gsm48_decode_bearer_cap(struct gsm_mncc_bearer_cap *bcap,
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const uint8_t *lv);
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/* encode 'bearer capability' */
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int gsm48_encode_bearer_cap(struct msgb *msg, int lv_only,
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const struct gsm_mncc_bearer_cap *bcap);
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/* decode 'call control cap' */
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int gsm48_decode_cccap(struct gsm_mncc_cccap *ccap, const uint8_t *lv);
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/* encode 'call control cap' */
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int gsm48_encode_cccap(struct msgb *msg,
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const struct gsm_mncc_cccap *ccap);
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/* decode 'called party BCD number' */
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int gsm48_decode_called(struct gsm_mncc_number *called,
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const uint8_t *lv);
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/* encode 'called party BCD number' */
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int gsm48_encode_called(struct msgb *msg,
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const struct gsm_mncc_number *called);
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/* decode callerid of various IEs */
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int gsm48_decode_callerid(struct gsm_mncc_number *callerid,
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const uint8_t *lv);
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/* encode callerid of various IEs */
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int gsm48_encode_callerid(struct msgb *msg, int ie, int max_len,
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const struct gsm_mncc_number *callerid);
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/* decode 'cause' */
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int gsm48_decode_cause(struct gsm_mncc_cause *cause,
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const uint8_t *lv);
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/* encode 'cause' */
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int gsm48_encode_cause(struct msgb *msg, int lv_only,
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const struct gsm_mncc_cause *cause);
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/* decode 'calling number' */
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int gsm48_decode_calling(struct gsm_mncc_number *calling,
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const uint8_t *lv);
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/* encode 'calling number' */
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int gsm48_encode_calling(struct msgb *msg,
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const struct gsm_mncc_number *calling);
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/* decode 'connected number' */
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int gsm48_decode_connected(struct gsm_mncc_number *connected,
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const uint8_t *lv);
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/* encode 'connected number' */
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int gsm48_encode_connected(struct msgb *msg,
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const struct gsm_mncc_number *connected);
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/* decode 'redirecting number' */
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int gsm48_decode_redirecting(struct gsm_mncc_number *redirecting,
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const uint8_t *lv);
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/* encode 'redirecting number' */
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int gsm48_encode_redirecting(struct msgb *msg,
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const struct gsm_mncc_number *redirecting);
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/* decode 'facility' */
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int gsm48_decode_facility(struct gsm_mncc_facility *facility,
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const uint8_t *lv);
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/* encode 'facility' */
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int gsm48_encode_facility(struct msgb *msg, int lv_only,
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const struct gsm_mncc_facility *facility);
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/* decode 'notify' */
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int gsm48_decode_notify(int *notify, const uint8_t *v);
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/* encode 'notify' */
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int gsm48_encode_notify(struct msgb *msg, int notify);
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/* decode 'signal' */
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int gsm48_decode_signal(int *signal, const uint8_t *v);
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/* encode 'signal' */
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int gsm48_encode_signal(struct msgb *msg, int signal);
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/* decode 'keypad' */
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int gsm48_decode_keypad(int *keypad, const uint8_t *lv);
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/* encode 'keypad' */
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int gsm48_encode_keypad(struct msgb *msg, int keypad);
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/* decode 'progress' */
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int gsm48_decode_progress(struct gsm_mncc_progress *progress,
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const uint8_t *lv);
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/* encode 'progress' */
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int gsm48_encode_progress(struct msgb *msg, int lv_only,
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const struct gsm_mncc_progress *p);
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/* decode 'user-user' */
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int gsm48_decode_useruser(struct gsm_mncc_useruser *uu,
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const uint8_t *lv);
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/* encode 'useruser' */
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int gsm48_encode_useruser(struct msgb *msg, int lv_only,
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const struct gsm_mncc_useruser *uu);
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/* decode 'ss version' */
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int gsm48_decode_ssversion(struct gsm_mncc_ssversion *ssv,
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const uint8_t *lv);
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/* encode 'ss version' */
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int gsm48_encode_ssversion(struct msgb *msg,
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const struct gsm_mncc_ssversion *ssv);
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/* decode 'more data' does not require a function, because it has no value */
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/* encode 'more data' */
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int gsm48_encode_more(struct msgb *msg);
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#endif
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@ -0,0 +1,71 @@
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#ifndef _OSMOCORE_MNCC_H
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#define _OSMOCORE_MNCC_H
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#define GSM_MAX_FACILITY 128
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#define GSM_MAX_SSVERSION 128
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#define GSM_MAX_USERUSER 128
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/* Expanded fields from GSM TS 04.08, Table 10.5.102 */
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struct gsm_mncc_bearer_cap {
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int transfer; /* Information Transfer Capability */
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int mode; /* Transfer Mode */
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int coding; /* Coding Standard */
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int radio; /* Radio Channel Requirement */
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int speech_ctm; /* CTM text telephony indication */
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int speech_ver[8]; /* Speech version indication */
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};
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struct gsm_mncc_number {
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int type;
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int plan;
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int present;
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int screen;
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char number[33];
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};
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struct gsm_mncc_cause {
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int location;
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int coding;
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int rec;
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int rec_val;
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int value;
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int diag_len;
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char diag[32];
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};
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struct gsm_mncc_useruser {
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int proto;
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char info[GSM_MAX_USERUSER + 1]; /* + termination char */
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};
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struct gsm_mncc_progress {
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int coding;
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int location;
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int descr;
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};
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struct gsm_mncc_facility {
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int len;
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char info[GSM_MAX_FACILITY];
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};
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struct gsm_mncc_ssversion {
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int len;
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char info[GSM_MAX_SSVERSION];
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};
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struct gsm_mncc_cccap {
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int dtmf;
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int pcp;
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};
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enum {
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GSM_MNCC_BCAP_SPEECH = 0,
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GSM_MNCC_BCAP_UNR_DIG = 1,
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GSM_MNCC_BCAP_AUDIO = 2,
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GSM_MNCC_BCAP_FAX_G3 = 3,
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GSM_MNCC_BCAP_OTHER_ITC = 5,
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GSM_MNCC_BCAP_RESERVED = 7,
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};
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#endif
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@ -7,9 +7,9 @@ AM_CFLAGS = -fPIC -Wall
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lib_LTLIBRARIES = libosmocore.la
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libosmocore_la_SOURCES = timer.c select.c signal.c msgb.c \
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libosmocore_la_SOURCES = timer.c select.c signal.c msgb.c rxlev_stat.c \
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tlv_parser.c bitvec.c comp128.c gsm_utils.c statistics.c \
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write_queue.c utils.c rsl.c gsm48.c rxlev_stat.c
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write_queue.c utils.c rsl.c gsm48.c gsm48_ie.c
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if ENABLE_TALLOC
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libosmocore_la_SOURCES += talloc.c
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@ -0,0 +1,659 @@
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/* GSM Mobile Radio Interface Layer 3 messages
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* 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */
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/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
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* (C) 2008-2010 by Andreas Eversberg
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <osmocore/utils.h>
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#include <osmocore/msgb.h>
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#include <osmocore/tlv.h>
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#include <osmocore/mncc.h>
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#include <osmocore/protocol/gsm_04_08.h>
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static const char bcd_num_digits[] = {
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', '*', '#', 'a', 'b', 'c', '\0'
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};
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/* decode a 'called/calling/connect party BCD number' as in 10.5.4.7 */
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int gsm48_decode_bcd_number(char *output, int output_len,
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const uint8_t *bcd_lv, int h_len)
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{
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uint8_t in_len = bcd_lv[0];
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int i;
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for (i = 1 + h_len; i <= in_len; i++) {
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/* lower nibble */
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output_len--;
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if (output_len <= 1)
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break;
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*output++ = bcd_num_digits[bcd_lv[i] & 0xf];
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/* higher nibble */
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output_len--;
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if (output_len <= 1)
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break;
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*output++ = bcd_num_digits[bcd_lv[i] >> 4];
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}
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if (output_len >= 1)
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*output++ = '\0';
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return 0;
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}
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/* convert a single ASCII character to call-control BCD */
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static int asc_to_bcd(const char asc)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(bcd_num_digits); i++) {
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if (bcd_num_digits[i] == asc)
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return i;
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}
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return -EINVAL;
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}
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/* convert a ASCII phone number to 'called/calling/connect party BCD number' */
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int gsm48_encode_bcd_number(uint8_t *bcd_lv, uint8_t max_len,
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int h_len, const char *input)
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{
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int in_len = strlen(input);
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int i;
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uint8_t *bcd_cur = bcd_lv + 1 + h_len;
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/* two digits per byte, plus type byte */
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bcd_lv[0] = in_len/2 + h_len;
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if (in_len % 2)
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bcd_lv[0]++;
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if (bcd_lv[0] > max_len)
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return -EIO;
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for (i = 0; i < in_len; i++) {
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int rc = asc_to_bcd(input[i]);
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if (rc < 0)
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return rc;
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if (i % 2 == 0)
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*bcd_cur = rc;
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else
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*bcd_cur++ |= (rc << 4);
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}
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/* append padding nibble in case of odd length */
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if (i % 2)
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*bcd_cur++ |= 0xf0;
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/* return how many bytes we used */
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return (bcd_cur - bcd_lv);
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}
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/* decode 'bearer capability' */
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int gsm48_decode_bearer_cap(struct gsm_mncc_bearer_cap *bcap,
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const uint8_t *lv)
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{
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uint8_t in_len = lv[0];
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int i, s;
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if (in_len < 1)
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return -EINVAL;
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bcap->speech_ver[0] = -1; /* end of list, of maximum 7 values */
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/* octet 3 */
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bcap->transfer = lv[1] & 0x07;
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bcap->mode = (lv[1] & 0x08) >> 3;
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bcap->coding = (lv[1] & 0x10) >> 4;
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bcap->radio = (lv[1] & 0x60) >> 5;
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if (bcap->transfer == GSM_MNCC_BCAP_SPEECH) {
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i = 1;
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s = 0;
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while(!(lv[i] & 0x80)) {
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i++; /* octet 3a etc */
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if (in_len < i)
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return 0;
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bcap->speech_ver[s++] = lv[i] & 0x0f;
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bcap->speech_ver[s] = -1; /* end of list */
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if (i == 2) /* octet 3a */
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bcap->speech_ctm = (lv[i] & 0x20) >> 5;
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if (s == 7) /* maximum speech versions + end of list */
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return 0;
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}
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} else {
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i = 1;
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while (!(lv[i] & 0x80)) {
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i++; /* octet 3a etc */
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if (in_len < i)
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return 0;
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/* ignore them */
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}
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/* FIXME: implement OCTET 4+ parsing */
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}
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return 0;
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}
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/* encode 'bearer capability' */
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int gsm48_encode_bearer_cap(struct msgb *msg, int lv_only,
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const struct gsm_mncc_bearer_cap *bcap)
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{
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uint8_t lv[32 + 1];
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int i = 1, s;
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lv[1] = bcap->transfer;
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lv[1] |= bcap->mode << 3;
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lv[1] |= bcap->coding << 4;
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lv[1] |= bcap->radio << 5;
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if (bcap->transfer == GSM_MNCC_BCAP_SPEECH) {
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for (s = 0; bcap->speech_ver[s] >= 0; s++) {
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i++; /* octet 3a etc */
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lv[i] = bcap->speech_ver[s];
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if (i == 2) /* octet 3a */
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lv[i] |= bcap->speech_ctm << 5;
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}
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lv[i] |= 0x80; /* last IE of octet 3 etc */
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} else {
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/* FIXME: implement OCTET 4+ encoding */
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}
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lv[0] = i;
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if (lv_only)
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msgb_lv_put(msg, lv[0], lv+1);
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else
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msgb_tlv_put(msg, GSM48_IE_BEARER_CAP, lv[0], lv+1);
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return 0;
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}
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/* decode 'call control cap' */
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int gsm48_decode_cccap(struct gsm_mncc_cccap *ccap, const uint8_t *lv)
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{
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uint8_t in_len = lv[0];
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if (in_len < 1)
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return -EINVAL;
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/* octet 3 */
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ccap->dtmf = lv[1] & 0x01;
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ccap->pcp = (lv[1] & 0x02) >> 1;
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return 0;
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}
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/* encode 'call control cap' */
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int gsm48_encode_cccap(struct msgb *msg,
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const struct gsm_mncc_cccap *ccap)
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{
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uint8_t lv[2];
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lv[0] = 1;
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lv[1] = 0;
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if (ccap->dtmf)
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lv [1] |= 0x01;
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if (ccap->pcp)
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lv [1] |= 0x02;
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msgb_tlv_put(msg, GSM48_IE_CC_CAP, lv[0], lv+1);
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return 0;
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}
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/* decode 'called party BCD number' */
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int gsm48_decode_called(struct gsm_mncc_number *called,
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const uint8_t *lv)
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{
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uint8_t in_len = lv[0];
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if (in_len < 1)
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return -EINVAL;
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/* octet 3 */
|
||||
called->plan = lv[1] & 0x0f;
|
||||
called->type = (lv[1] & 0x70) >> 4;
|
||||
|
||||
/* octet 4..N */
|
||||
gsm48_decode_bcd_number(called->number, sizeof(called->number), lv, 1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'called party BCD number' */
|
||||
int gsm48_encode_called(struct msgb *msg,
|
||||
const struct gsm_mncc_number *called)
|
||||
{
|
||||
uint8_t lv[18];
|
||||
int ret;
|
||||
|
||||
/* octet 3 */
|
||||
lv[1] = called->plan;
|
||||
lv[1] |= called->type << 4;
|
||||
|
||||
/* octet 4..N, octet 2 */
|
||||
ret = gsm48_encode_bcd_number(lv, sizeof(lv), 1, called->number);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
msgb_tlv_put(msg, GSM48_IE_CALLED_BCD, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode callerid of various IEs */
|
||||
int gsm48_decode_callerid(struct gsm_mncc_number *callerid,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
int i = 1;
|
||||
|
||||
if (in_len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
/* octet 3 */
|
||||
callerid->plan = lv[1] & 0x0f;
|
||||
callerid->type = (lv[1] & 0x70) >> 4;
|
||||
|
||||
/* octet 3a */
|
||||
if (!(lv[1] & 0x80)) {
|
||||
callerid->screen = lv[2] & 0x03;
|
||||
callerid->present = (lv[2] & 0x60) >> 5;
|
||||
i = 2;
|
||||
}
|
||||
|
||||
/* octet 4..N */
|
||||
gsm48_decode_bcd_number(callerid->number, sizeof(callerid->number), lv, i);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode callerid of various IEs */
|
||||
int gsm48_encode_callerid(struct msgb *msg, int ie, int max_len,
|
||||
const struct gsm_mncc_number *callerid)
|
||||
{
|
||||
uint8_t lv[max_len - 1];
|
||||
int h_len = 1;
|
||||
int ret;
|
||||
|
||||
/* octet 3 */
|
||||
lv[1] = callerid->plan;
|
||||
lv[1] |= callerid->type << 4;
|
||||
|
||||
if (callerid->present || callerid->screen) {
|
||||
/* octet 3a */
|
||||
lv[2] = callerid->screen;
|
||||
lv[2] |= callerid->present << 5;
|
||||
lv[2] |= 0x80;
|
||||
h_len++;
|
||||
} else
|
||||
lv[1] |= 0x80;
|
||||
|
||||
/* octet 4..N, octet 2 */
|
||||
ret = gsm48_encode_bcd_number(lv, sizeof(lv), h_len, callerid->number);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
msgb_tlv_put(msg, ie, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'cause' */
|
||||
int gsm48_decode_cause(struct gsm_mncc_cause *cause,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
int i;
|
||||
|
||||
if (in_len < 2)
|
||||
return -EINVAL;
|
||||
|
||||
cause->diag_len = 0;
|
||||
|
||||
/* octet 3 */
|
||||
cause->location = lv[1] & 0x0f;
|
||||
cause->coding = (lv[1] & 0x60) >> 5;
|
||||
|
||||
i = 1;
|
||||
if (!(lv[i] & 0x80)) {
|
||||
i++; /* octet 3a */
|
||||
if (in_len < i+1)
|
||||
return 0;
|
||||
cause->rec = 1;
|
||||
cause->rec_val = lv[i] & 0x7f;
|
||||
}
|
||||
i++;
|
||||
|
||||
/* octet 4 */
|
||||
cause->value = lv[i] & 0x7f;
|
||||
i++;
|
||||
|
||||
if (in_len < i) /* no diag */
|
||||
return 0;
|
||||
|
||||
if (in_len - (i-1) > 32) /* maximum 32 octets */
|
||||
return 0;
|
||||
|
||||
/* octet 5-N */
|
||||
memcpy(cause->diag, lv + i, in_len - (i-1));
|
||||
cause->diag_len = in_len - (i-1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'cause' */
|
||||
int gsm48_encode_cause(struct msgb *msg, int lv_only,
|
||||
const struct gsm_mncc_cause *cause)
|
||||
{
|
||||
uint8_t lv[32+4];
|
||||
int i;
|
||||
|
||||
if (cause->diag_len > 32)
|
||||
return -EINVAL;
|
||||
|
||||
/* octet 3 */
|
||||
lv[1] = cause->location;
|
||||
lv[1] |= cause->coding << 5;
|
||||
|
||||
i = 1;
|
||||
if (cause->rec) {
|
||||
i++; /* octet 3a */
|
||||
lv[i] = cause->rec_val;
|
||||
}
|
||||
lv[i] |= 0x80; /* end of octet 3 */
|
||||
|
||||
/* octet 4 */
|
||||
i++;
|
||||
lv[i] = 0x80 | cause->value;
|
||||
|
||||
/* octet 5-N */
|
||||
if (cause->diag_len) {
|
||||
memcpy(lv + i, cause->diag, cause->diag_len);
|
||||
i += cause->diag_len;
|
||||
}
|
||||
|
||||
lv[0] = i;
|
||||
if (lv_only)
|
||||
msgb_lv_put(msg, lv[0], lv+1);
|
||||
else
|
||||
msgb_tlv_put(msg, GSM48_IE_CAUSE, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'calling number' */
|
||||
int gsm48_decode_calling(struct gsm_mncc_number *calling,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
return gsm48_decode_callerid(calling, lv);
|
||||
}
|
||||
|
||||
/* encode 'calling number' */
|
||||
int gsm48_encode_calling(struct msgb *msg,
|
||||
const struct gsm_mncc_number *calling)
|
||||
{
|
||||
return gsm48_encode_callerid(msg, GSM48_IE_CALLING_BCD, 14, calling);
|
||||
}
|
||||
|
||||
/* decode 'connected number' */
|
||||
int gsm48_decode_connected(struct gsm_mncc_number *connected,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
return gsm48_decode_callerid(connected, lv);
|
||||
}
|
||||
|
||||
/* encode 'connected number' */
|
||||
int gsm48_encode_connected(struct msgb *msg,
|
||||
const struct gsm_mncc_number *connected)
|
||||
{
|
||||
return gsm48_encode_callerid(msg, GSM48_IE_CONN_BCD, 14, connected);
|
||||
}
|
||||
|
||||
/* decode 'redirecting number' */
|
||||
int gsm48_decode_redirecting(struct gsm_mncc_number *redirecting,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
return gsm48_decode_callerid(redirecting, lv);
|
||||
}
|
||||
|
||||
/* encode 'redirecting number' */
|
||||
int gsm48_encode_redirecting(struct msgb *msg,
|
||||
const struct gsm_mncc_number *redirecting)
|
||||
{
|
||||
return gsm48_encode_callerid(msg, GSM48_IE_REDIR_BCD, 19, redirecting);
|
||||
}
|
||||
|
||||
/* decode 'facility' */
|
||||
int gsm48_decode_facility(struct gsm_mncc_facility *facility,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
|
||||
if (in_len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
if (in_len > sizeof(facility->info))
|
||||
return -EINVAL;
|
||||
|
||||
memcpy(facility->info, lv+1, in_len);
|
||||
facility->len = in_len;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'facility' */
|
||||
int gsm48_encode_facility(struct msgb *msg, int lv_only,
|
||||
const struct gsm_mncc_facility *facility)
|
||||
{
|
||||
uint8_t lv[GSM_MAX_FACILITY + 1];
|
||||
|
||||
if (facility->len < 1 || facility->len > GSM_MAX_FACILITY)
|
||||
return -EINVAL;
|
||||
|
||||
memcpy(lv+1, facility->info, facility->len);
|
||||
lv[0] = facility->len;
|
||||
if (lv_only)
|
||||
msgb_lv_put(msg, lv[0], lv+1);
|
||||
else
|
||||
msgb_tlv_put(msg, GSM48_IE_FACILITY, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'notify' */
|
||||
int gsm48_decode_notify(int *notify, const uint8_t *v)
|
||||
{
|
||||
*notify = v[0] & 0x7f;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'notify' */
|
||||
int gsm48_encode_notify(struct msgb *msg, int notify)
|
||||
{
|
||||
msgb_v_put(msg, notify | 0x80);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'signal' */
|
||||
int gsm48_decode_signal(int *signal, const uint8_t *v)
|
||||
{
|
||||
*signal = v[0];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'signal' */
|
||||
int gsm48_encode_signal(struct msgb *msg, int signal)
|
||||
{
|
||||
msgb_tv_put(msg, GSM48_IE_SIGNAL, signal);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'keypad' */
|
||||
int gsm48_decode_keypad(int *keypad, const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
|
||||
if (in_len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
*keypad = lv[1] & 0x7f;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'keypad' */
|
||||
int gsm48_encode_keypad(struct msgb *msg, int keypad)
|
||||
{
|
||||
msgb_tv_put(msg, GSM48_IE_KPD_FACILITY, keypad);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'progress' */
|
||||
int gsm48_decode_progress(struct gsm_mncc_progress *progress,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
|
||||
if (in_len < 2)
|
||||
return -EINVAL;
|
||||
|
||||
progress->coding = (lv[1] & 0x60) >> 5;
|
||||
progress->location = lv[1] & 0x0f;
|
||||
progress->descr = lv[2] & 0x7f;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'progress' */
|
||||
int gsm48_encode_progress(struct msgb *msg, int lv_only,
|
||||
const struct gsm_mncc_progress *p)
|
||||
{
|
||||
uint8_t lv[3];
|
||||
|
||||
lv[0] = 2;
|
||||
lv[1] = 0x80 | ((p->coding & 0x3) << 5) | (p->location & 0xf);
|
||||
lv[2] = 0x80 | (p->descr & 0x7f);
|
||||
if (lv_only)
|
||||
msgb_lv_put(msg, lv[0], lv+1);
|
||||
else
|
||||
msgb_tlv_put(msg, GSM48_IE_PROGR_IND, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'user-user' */
|
||||
int gsm48_decode_useruser(struct gsm_mncc_useruser *uu,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
char *info = uu->info;
|
||||
int info_len = sizeof(uu->info);
|
||||
int i;
|
||||
|
||||
if (in_len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
uu->proto = lv[1];
|
||||
|
||||
for (i = 2; i <= in_len; i++) {
|
||||
info_len--;
|
||||
if (info_len <= 1)
|
||||
break;
|
||||
*info++ = lv[i];
|
||||
}
|
||||
if (info_len >= 1)
|
||||
*info++ = '\0';
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'useruser' */
|
||||
int gsm48_encode_useruser(struct msgb *msg, int lv_only,
|
||||
const struct gsm_mncc_useruser *uu)
|
||||
{
|
||||
uint8_t lv[GSM_MAX_USERUSER + 2];
|
||||
|
||||
if (strlen(uu->info) > GSM_MAX_USERUSER)
|
||||
return -EINVAL;
|
||||
|
||||
lv[0] = 1 + strlen(uu->info);
|
||||
lv[1] = uu->proto;
|
||||
memcpy(lv + 2, uu->info, strlen(uu->info));
|
||||
if (lv_only)
|
||||
msgb_lv_put(msg, lv[0], lv+1);
|
||||
else
|
||||
msgb_tlv_put(msg, GSM48_IE_USER_USER, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'ss version' */
|
||||
int gsm48_decode_ssversion(struct gsm_mncc_ssversion *ssv,
|
||||
const uint8_t *lv)
|
||||
{
|
||||
uint8_t in_len = lv[0];
|
||||
|
||||
if (in_len < 1 || in_len < sizeof(ssv->info))
|
||||
return -EINVAL;
|
||||
|
||||
memcpy(ssv->info, lv + 1, in_len);
|
||||
ssv->len = in_len;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* encode 'ss version' */
|
||||
int gsm48_encode_ssversion(struct msgb *msg,
|
||||
const struct gsm_mncc_ssversion *ssv)
|
||||
{
|
||||
uint8_t lv[GSM_MAX_SSVERSION + 1];
|
||||
|
||||
if (ssv->len > GSM_MAX_SSVERSION)
|
||||
return -EINVAL;
|
||||
|
||||
lv[0] = ssv->len;
|
||||
memcpy(lv + 1, ssv->info, ssv->len);
|
||||
msgb_tlv_put(msg, GSM48_IE_SS_VERS, lv[0], lv+1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* decode 'more data' does not require a function, because it has no value */
|
||||
|
||||
/* encode 'more data' */
|
||||
int gsm48_encode_more(struct msgb *msg)
|
||||
{
|
||||
uint8_t *ie;
|
||||
|
||||
ie = msgb_put(msg, 1);
|
||||
ie[0] = GSM48_IE_MORE_DATA;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue