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NMT / SMS: Short Message Service support

This commit is contained in:
Andreas Eversberg 2016-07-04 19:52:00 +02:00
parent 64c829909b
commit e7fa08b6df
11 changed files with 1017 additions and 10 deletions
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1
.gitignore vendored
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@ -28,3 +28,4 @@ src/amps/amps
src/test/test_compandor
src/test/test_emphasis
src/test/test_dms
src/test/test_sms

1
src/common/debug.c
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@ -51,6 +51,7 @@ struct debug_cat {
{ "database", "\033[0;33m" },
{ "transaction", "\033[0;32m" },
{ "dms", "\033[0;33m" },
{ "sms", "\033[1;37m" },
{ NULL, NULL }
};

1
src/common/debug.h
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@ -18,6 +18,7 @@
#define DDB 11
#define DTRANS 12
#define DDMS 13
#define DSMS 14
#define PDEBUG(cat, level, fmt, arg...) _printdebug(__FILE__, __FUNCTION__, __LINE__, cat, level, fmt, ## arg)
void _printdebug(const char *file, const char *function, int line, int cat, int level, const char *fmt, ...);

1
src/nmt/Makefile.am
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@ -8,6 +8,7 @@ nmt_SOURCES = \
dsp.c \
frame.c \
dms.c \
sms.c \
image.c \
tones.c \
announcement.c \

68
src/nmt/main.c
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@ -24,6 +24,10 @@
#include <string.h>
#include <signal.h>
#include <sched.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "../common/main.h"
#include "../common/debug.h"
#include "../common/timer.h"
@ -36,6 +40,9 @@
#include "tones.h"
#include "announcement.h"
#define SMS_FIFO "/tmp/nmt_sms_deliver"
static int sms_fd = -1;
/* settings */
int num_chan_type = 0;
enum nmt_chan_type chan_type[MAX_SENDER] = { CHAN_TYPE_CC_TC };
@ -44,6 +51,7 @@ char traffic_area[3] = "";
char area_no = 0;
int compandor = 1;
int supervisory = 0;
const char *smsc_number = "767";
void print_help(const char *arg0)
{
@ -69,6 +77,9 @@ void print_help(const char *arg0)
printf(" -0 --supervisory 1..4 | 0\n");
printf(" Use supervisory signal 1..4 to detect loss of signal from mobile\n");
printf(" station, use 0 to disable. (default = '%d')\n", supervisory);
printf(" -S --smsc-number <digits>\n");
printf(" If this number is dialed, the mobile is connected to the SMSC (Short\n");
printf(" Message Service Center). (default = '%s')\n", smsc_number);
printf("\nstation-id: Give 7 digits of station-id, you don't need to enter it\n");
printf(" for every start of this program.\n");
}
@ -85,10 +96,11 @@ static int handle_options(int argc, char **argv)
{"traffic-area", 1, 0, 'y'},
{"compandor", 1, 0, 'C'},
{"supervisory", 1, 0, '0'},
{"smsc-number", 1, 0, 'S'},
{0, 0, 0, 0}
};
set_options_common("t:P:a:y:C:0:", long_options_special);
set_options_common("t:P:a:y:C:0:S:", long_options_special);
while (1) {
int option_index = 0, c, rc;
@ -176,6 +188,10 @@ error_ta:
}
skip_args += 2;
break;
case 'S':
smsc_number = strdup(optarg);
skip_args += 2;
break;
default:
opt_switch_common(c, argv[0], &skip_args);
}
@ -186,6 +202,33 @@ error_ta:
return skip_args;
}
static void myhandler(void)
{
static char buffer[256];
static int pos = 0, rc, i;
int space = sizeof(buffer) - pos;
rc = read(sms_fd, buffer + pos, space);
if (rc > 0) {
pos += rc;
if (pos == space) {
fprintf(stderr, "SMS buffer overflow!\n");
pos = 0;
}
/* check for end of line */
for (i = 0; i < pos; i++) {
if (buffer[i] == '\r' || buffer[i] == '\n')
break;
}
/* send sms */
if (i < pos) {
buffer[i] = '\0';
pos = 0;
deliver_sms(buffer);
}
}
}
int main(int argc, char *argv[])
{
int rc;
@ -237,6 +280,20 @@ int main(int argc, char *argv[])
return 0;
}
/* create pipe for SMS delivery */
unlink(SMS_FIFO);
rc = mkfifo(SMS_FIFO, 0666);
if (rc < 0) {
fprintf(stderr, "Failed to create SMS deliver FIFO!\n");
goto fail;
} else {
sms_fd = open(SMS_FIFO, O_RDONLY | O_NONBLOCK);
if (sms_fd < 0) {
fprintf(stderr, "Failed to open SMS deliver FIFO!\n");
goto fail;
}
}
if (!loopback)
print_image();
@ -258,7 +315,7 @@ int main(int argc, char *argv[])
/* create transceiver instance */
for (i = 0; i < num_kanal; i++) {
rc = nmt_create(kanal[i], (loopback) ? CHAN_TYPE_TEST : chan_type[i], sounddev[i], samplerate, cross_channels, rx_gain, do_pre_emphasis, do_de_emphasis, write_wave, read_wave, ms_power, nmt_digits2value(traffic_area, 2), area_no, compandor, supervisory, loopback);
rc = nmt_create(kanal[i], (loopback) ? CHAN_TYPE_TEST : chan_type[i], sounddev[i], samplerate, cross_channels, rx_gain, do_pre_emphasis, do_de_emphasis, write_wave, read_wave, ms_power, nmt_digits2value(traffic_area, 2), area_no, compandor, supervisory, smsc_number, loopback);
if (rc < 0) {
fprintf(stderr, "Failed to create transceiver instance. Quitting!\n");
goto fail;
@ -286,7 +343,7 @@ int main(int argc, char *argv[])
fprintf(stderr, "Error setting SCHED_RR with prio %d\n", rt_prio);
}
main_loop(&quit, latency, interval, NULL);
main_loop(&quit, latency, interval, myhandler);
if (rt_prio > 0) {
struct sched_param schedp;
@ -297,6 +354,11 @@ int main(int argc, char *argv[])
}
fail:
/* fifo */
if (sms_fd > 0)
close(sms_fd);
unlink(SMS_FIFO);
/* cleanup functions */
call_cleanup();
if (use_mncc_sock)

98
src/nmt/nmt.c
View File

@ -22,6 +22,7 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include "../common/debug.h"
#include "../common/timer.h"
#include "../common/call.h"
@ -30,6 +31,8 @@
#include "dsp.h"
#include "frame.h"
static int sms_ref = 0;
/* Call reference for calls from mobile station to network
This offset of 0x400000000 is required for MNCC interface. */
static int new_callref = 0x40000000;
@ -283,7 +286,7 @@ static void nmt_timeout(struct timer *timer);
static void nmt_go_idle(nmt_t *nmt);
/* Create transceiver instance and link to a list. */
int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, uint8_t ms_power, uint8_t traffic_area, uint8_t area_no, int compandor, int supervisory, int loopback)
int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, uint8_t ms_power, uint8_t traffic_area, uint8_t area_no, int compandor, int supervisory, const char *smsc_number, int loopback)
{
nmt_t *nmt;
int rc;
@ -337,13 +340,20 @@ int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev,
goto error;
}
/* init audio processing */
/* init DMS processing */
rc = dms_init_sender(nmt);
if (rc < 0) {
PDEBUG(DNMT, DEBUG_ERROR, "Failed to init DMS processing!\n");
goto error;
}
/* init SMS processing */
rc = sms_init_sender(nmt);
if (rc < 0) {
PDEBUG(DNMT, DEBUG_ERROR, "Failed to init SMS processing!\n");
goto error;
}
timer_init(&nmt->timer, nmt_timeout, nmt);
nmt->sysinfo.chan_type = chan_type;
nmt->sysinfo.ms_power = ms_power;
@ -351,6 +361,7 @@ int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev,
nmt->sysinfo.area_no = area_no;
nmt->compandor = compandor;
nmt->supervisory = supervisory;
strncpy(nmt->smsc_number, smsc_number, sizeof(nmt->smsc_number) - 1);
/* go into idle state */
nmt_go_idle(nmt);
@ -371,6 +382,7 @@ void nmt_destroy(sender_t *sender)
PDEBUG(DNMT, DEBUG_DEBUG, "Destroying 'NMT' instance for channel = %d.\n", sender->kanal);
dsp_cleanup_sender(nmt);
dms_cleanup_sender(nmt);
sms_cleanup_sender(nmt);
timer_exit(&nmt->timer);
sender_destroy(&nmt->sender);
free(nmt);
@ -382,6 +394,8 @@ static void nmt_go_idle(nmt_t *nmt)
timer_stop(&nmt->timer);
nmt->page_for_nmt = NULL;
nmt->dms_call = 0;
dms_reset(nmt);
sms_reset(nmt);
PDEBUG(DNMT, DEBUG_INFO, "Entering IDLE state, sending idle frames on %s.\n", chan_type_long_name(nmt->sysinfo.chan_type));
nmt_new_state(nmt, STATE_IDLE);
@ -760,9 +774,9 @@ static void rx_mo_dialing(nmt_t *nmt, frame_t *frame)
break;
PDEBUG(DNMT, DEBUG_INFO, "Dialing complete %s->%s, call established.\n", &nmt->subscriber.country, nmt->dialing);
/* setup call */
if (!strcmp(nmt->dialing, "767")) {
if (!strcmp(nmt->dialing, nmt->smsc_number)) {
/* SMS */
dms_reset(nmt);
PDEBUG(DNMT, DEBUG_INFO, "Setup call to SMSC.\n");
nmt->dms_call = 1;
} else {
int callref = ++new_callref;
@ -980,6 +994,10 @@ static void tx_mt_complete(nmt_t *nmt, frame_t *frame)
super_reset(nmt);
timer_start(&nmt->timer, SUPERVISORY_TO1);
}
if (nmt->dms_call) {
time_t ti = time(NULL);
sms_deliver(nmt, sms_ref, "", SMS_TYPE_UKNOWN, SMS_PLAN_ISDN_TEL, ti, nmt->sms_string);
}
}
}
@ -1365,7 +1383,7 @@ const char *nmt_get_frame(nmt_t *nmt)
*/
/* Call control starts call towards mobile station. */
int call_out_setup(int callref, char *dialing)
int _out_setup(int callref, char *dialing, const char *sms)
{
sender_t *sender;
nmt_t *nmt;
@ -1413,10 +1431,22 @@ inval:
/* 4. trying to page mobile station */
sender->callref = callref;
if (sms) {
strncpy(nmt->sms_string, sms, sizeof(nmt->sms_string) - 1);
nmt->dms_call = 1;
}
nmt_page(nmt, ms_country, ms_number, 1);
return 0;
}
int call_out_setup(int callref, char *dialing)
{
return _out_setup(callref, dialing, NULL);
}
int sms_out_setup(char *dialing, const char *sms)
{
return _out_setup(0, dialing, sms);
}
/* Call control sends disconnect (with tones).
* An active call stays active, so tones and annoucements can be received
@ -1519,3 +1549,61 @@ void call_rx_audio(int callref, int16_t *samples, int count)
}
}
/*
* SMS layer messages
*/
/* SMS layer releases */
void sms_release(nmt_t *nmt)
{
PDEBUG(DNMT, DEBUG_NOTICE, "Outgoing release, by SMS layer!\n");
nmt_release(nmt);
}
void sms_submit(nmt_t *nmt, uint8_t ref, const char *orig_address, uint8_t orig_type, uint8_t orig_plan, int msg_ref, const char *dest_address, uint8_t dest_type, uint8_t dest_plan, const char *message)
{
PDEBUG(DNMT, DEBUG_NOTICE, "Received SMS from '%s' to '%s'\n", orig_address, dest_address);
printf("SMS received '%s' -> '%s': %s\n", orig_address, dest_address, message);
}
void sms_deliver_report(nmt_t *nmt, uint8_t ref, int error, uint8_t cause)
{
PDEBUG(DNMT, DEBUG_NOTICE, "Got SMS deliver report\n");
if (error)
printf("SMS failed! (cause=%d)\n", cause);
else {
sms_ref++;
printf("SMS sent!\n");
}
}
/* application sends ud a message, we need to deliver */
void deliver_sms(const char *sms)
{
int i, rc;
char number[8];
/* check for number digits */
for (i = 0; i < 7; i++) {
if (sms[i] < '0' || sms[i] > '9')
break;
}
if (i < 7 || sms[7] != ',') {
PDEBUG(DNMT, DEBUG_NOTICE, "Given SMS MUST start with the 7 digits phone number, followed by a comma (no spaces)\n");
return;
}
strncpy(number, sms, 7);
number[7] = '\0';
sms += 8;
PDEBUG(DNMT, DEBUG_INFO, "SMS for subscriber '%s'\n", number);
printf("SMS sending SMSC -> '%s': %s\n", number, sms);
rc = sms_out_setup(number, sms);
if (rc < 0) {
PDEBUG(DNMT, DEBUG_INFO, "SMS delivery failed with cause '%d'\n", -rc);
return;
}
}

10
src/nmt/nmt.h
View File

@ -2,6 +2,7 @@
#include "../common/compandor.h"
#include "../common/dtmf.h"
#include "dms.h"
#include "sms.h"
enum dsp_mode {
DSP_MODE_DIALTONE, /* stream dial tone to mobile phone */
@ -134,6 +135,12 @@ typedef struct nmt {
/* DMS states */
int dms_call; /* indicates that this call is a DMS call */
dms_t dms; /* DMS states */
/* SMS states */
char smsc_number[33]; /* digits to match SMSC */
sms_t sms; /* SMS states */
struct timer sms_timer;
char sms_string[256]; /* current string to deliver */
} nmt_t;
void nmt_channel_list(void);
@ -143,9 +150,10 @@ const char *chan_type_long_name(enum nmt_chan_type chan_type);
double nmt_channel2freq(int channel, int uplink);
void nmt_country_list(void);
uint8_t nmt_country_by_short_name(const char *short_name);
int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, uint8_t ms_power, uint8_t traffic_area, uint8_t area_no, int compandor, int supervisory, int loopback);
int nmt_create(int channel, enum nmt_chan_type chan_type, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, uint8_t ms_power, uint8_t traffic_area, uint8_t area_no, int compandor, int supervisory, const char *smsc_number, int loopback);
void nmt_destroy(sender_t *sender);
void nmt_receive_frame(nmt_t *nmt, const char *bits, double quality, double level, double frames_elapsed);
const char *nmt_get_frame(nmt_t *nmt);
void nmt_rx_super(nmt_t *nmt, int tone, double quality);
void deliver_sms(const char *sms);

681
src/nmt/sms.c Normal file
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@ -0,0 +1,681 @@
/* NMT SMS (short message service) processing
*
* (C) 2016 by Andreas Eversberg <jolly@eversberg.eu>
* All Rights Reserved
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include "../common/debug.h"
#include "../common/timer.h"
#include "nmt.h"
#define SMS_RELEASE_TO 2.0
/* TP-Message-Type-Indicator (TP-MTI) */
#define MTI_SMS_DELIVER 0x00 /* SC -> MS */
#define MTI_SMS_DELIVER_REPORT 0x00 /* MS -> SC */
#define MTI_SMS_STATUS_REPORT 0x02 /* SC -> MS */
#define MTI_SMS_COMMAND 0x02 /* MS -> SC */
#define MTI_SMS_SUBMIT 0x01 /* MS -> SC */
#define MTI_SMS_SUBMIT_REPORT 0x01 /* SC -> MS */
#define MTI_MASK 0x03 /* Bits 0 and 1 */
/* TP-More-Messages-to-Send (TP-MMS) */
#define MMS_NORE 0x00
#define MMS_NO_MORE 0x04
#define MMS_MASK 0x04 /* Bit 2 */
/* TP-Validity-Period-Format (TP-VPF) */
#define VPF_NOT_PRESENT 0x00
#define VPF_PRESENT_INTEGER 0x10
#define VPF_PRESENT_SEMI_OCTET 0x18
#define VPF_MASK 0x18 /* Bits 3 and 4 */
/* TP-Status-Report-Indication (TP-SRI) */
#define SRI_NO_REPORT 0x00
#define SRI_REPORT 0x20
#define SRI_MASK 0x20
/* TP-Status-Report-Request (TP-SRR) */
#define SSR_NO_REPORT 0x00
#define SSR_REPORT 0x20
#define SSR_MASK 0x20
/* TP-Failure-Cause (TP-FCS) */
#define FCS_BUSY 0xc0
#define FCS_NO_SC_SUBSCRIPTION 0xc1
#define FSC_SC_SYSTEM_FAILURE 0xC2
#define FSC_DEST_SME_BARRED 0xC4
#define FSC_ERROR_IN_MS 0xD2
#define FSC_MEMORY_EXCEEDED 0xD3
#define FSC_UNSPECIFIED_ERROR 0xFF
/* RP-Message-Type-Indicator (RP-MTI) */
#define RP_MO_DATA 0x00 /* MS -> SC */
#define RP_MT_DATA 0x01 /* SC -> MS */
#define RP_MT_ACK 0x02 /* MS -> SC */
#define RP_MO_ACK 0x03 /* SC -> MS */
#define RP_MT_ERROR 0x04 /* MS -> SC */
#define RP_MO_ERROR 0x05 /* SC -> MS */
#define RP_SM_MEMORY_AVAILABLE 0x06 /* MS -> SC */
#define RP_SM_READY_TO_RECEIVE 0x07 /* MS -> SC */
#define RP_SM_NO_MESSAGE 0x07 /* SC -> MS */
#define RP_MTI_MASK 0x07
/* RP IEs */
#define RP_IE_USER_DATA 0x41 /* wrong in NMT Doc.450-3 1998-04-03 */
#define RP_IE_CAUSE 0x42
/* SC -> MS header */
static const char sms_header[] = {
0x01, 0x18, 0x53, 0x4d, 0x53, 0x48, 0x18, 'A', 'B', 'C', 0x02
};
/*
* init and exit
*/
static void sms_timeout(struct timer *timer);
/* init instance */
int sms_init_sender(nmt_t *nmt)
{
timer_init(&nmt->sms_timer, sms_timeout, nmt);
return 0;
}
/* Cleanup transceiver instance. */
void sms_cleanup_sender(nmt_t *nmt)
{
timer_exit(&nmt->sms_timer);
sms_reset(nmt);
}
/*
* send to lower layer
*/
/* encode header */
static int encode_header(uint8_t *data)
{
memcpy(data, sms_header, sizeof(sms_header));
return sizeof(sms_header);
}
/* encode address fields */
static int encode_address(uint8_t *data, const char *address, uint8_t type, uint8_t plan)
{
int length = 1;
uint8_t digit;
int i, j;
PDEBUG(DSMS, DEBUG_DEBUG, "Encode SC->MS header\n");
data[length++] = 0x80 | (type << 4) | plan;
j = 0;
for (i = 0; address[i]; i++) {
if (address[i] >= '1' && address[i] <= '9')
digit = address[i] - '0';
else if (address[i] == '0')
digit = 10;
else if (address[i] == '*')
digit = 11;
else if (address[i] == '#')
digit = 12;
else if (address[i] == '+')
digit = 13;
else
continue;
if ((j & 1) == 0)
data[length] = digit;
else
data[length++] |= digit << 4;
j++;
}
if ((j & 1))
data[length++] |= 0xf0;
/* length field: number of semi-octets */
data[0] = j;
return length;
}
/* encode time stamp */
static int encode_time(uint8_t *data, time_t timestamp)
{
struct tm *tm = localtime(&timestamp);
int length = 0;
uint8_t digit1, digit2;
int quarters, sign;
PDEBUG(DSMS, DEBUG_DEBUG, "Encode time stamp '%02d.%02d.%02d %02d:%02d:%02d'\n", tm->tm_mday, tm->tm_mon + 1, tm->tm_year % 100, tm->tm_hour, tm->tm_min, tm->tm_sec);
/* year */
digit1 = (tm->tm_year % 100) / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = tm->tm_year % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* month */
digit1 = (tm->tm_mon + 1) / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = (tm->tm_mon + 1) % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* day */
digit1 = tm->tm_mday / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = tm->tm_mday % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* hour */
digit1 = tm->tm_hour / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = tm->tm_hour % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* min */
digit1 = tm->tm_min / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = tm->tm_min % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* sec */
digit1 = tm->tm_sec / 10;
if (digit1 == 0)
digit1 = 10;
digit2 = tm->tm_sec % 10;
if (digit2 == 0)
digit2 = 10;
data[length++] = (digit2 << 4) | digit1;
/* zone */
quarters = timezone / 900;
if (quarters < 0) {
quarters = -quarters;
sign = 1;
} else {
quarters = -quarters;
sign = 0;
}
data[length++] = (quarters << 4) | (sign << 3) | (quarters >> 4);
return length;
}
/* encode user data */
static int encode_userdata(uint8_t *data, const char *message)
{
int length = 1;
char character;
int i, j, pos;
PDEBUG(DSMS, DEBUG_DEBUG, "Encode user data '%s'\n", message);
j = 0;
pos = 0;
for (i = 0; message[i]; i++) {
if (message[i] < 128)
character = message[i];
else
character = '?';
j++;
if (pos == 0) {
/* character fits and is aligned to the right, new octet */
data[length] = character;
pos = 7;
} else {
/* character is shifted by pos */
data[length] |= character << pos;
if (pos > 1) {
/* not all bits fit in octet, so fill the rest to next octet */
length++;
data[length] = character >> (8 - pos);
pos--;
} else {
/* all bits fit in octet, so go to next octet */
pos = 0;
length++;
}
}
}
if (pos)
length++;
/* length field: number of characters */
data[0] = j;
return length;
}
/* deliver SMS (SC->MS) */
int sms_deliver(nmt_t *nmt, uint8_t ref, const char *orig_address, uint8_t orig_type, uint8_t orig_plan, time_t timestamp, const char *message)
{
uint8_t data[256], *tpdu_length;
int length = 0;
int orig_len;
int msg_len;
PDEBUG(DSMS, DEBUG_DEBUG, "Delivering SMS from upper layer\n");
orig_len = strlen(orig_address);
msg_len = strlen(message);
if (orig_len > 24) {
PDEBUG(DSMS, DEBUG_NOTICE, "Originator Address too long (%d characters)\n", orig_len);
return -EINVAL;
}
if (msg_len > 140) {
PDEBUG(DSMS, DEBUG_NOTICE, "Message too long (%d characters)\n", msg_len);
return -EINVAL;
}
/* HEADER */
length = encode_header(data);
/* RP */
data[length++] = RP_MT_DATA;
data[length++] = ref;
data[length++] = RP_IE_USER_DATA;
tpdu_length = data + length++;
/* TP */
data[length++] = MTI_SMS_DELIVER | MMS_NO_MORE | VPF_NOT_PRESENT | SRI_NO_REPORT;
length += encode_address(data + length, orig_address, orig_type, orig_plan); /* TP-OA */
data[length++] = 0; /* TP-PID */
data[length++] = 0; /* TP-DCS */
length += encode_time(data + length, timestamp);
length += encode_userdata(data + length, message);
/* RP length */
*tpdu_length = length - (uint8_t)(tpdu_length - data) - 1;
PDEBUG(DSMS, DEBUG_DEBUG, " -> TPDU lenght = %d\n", *tpdu_length);
nmt->sms.mt = 1;
dms_send(nmt, data, length, 1);
return 0;
}
/* report SMS (SC->MS) */
static void sms_submit_report(nmt_t *nmt, uint8_t ref, int error)
{
uint8_t data[64];
int length = 0;
PDEBUG(DSMS, DEBUG_DEBUG, "Sending Submit Report (%s)\n", (error) ? "error" : "ok");
/* HEADER */
length = encode_header(data);
/* RP */
data[length++] = (error) ? RP_MO_ERROR : RP_MO_ACK;
data[length++] = ref;
dms_send(nmt, data, length, 1);
}
/*
* receive from lower layer
*/
/* decdoe message from 8 bit data */
static void decode_message(const uint8_t *data, int length, char *message)
{
int fill;
int i;
uint16_t result;
fill = 0;
result = 0;
for (i = 0; i < length; i++) {
result |= data[i] << fill;
fill += 8;
while (fill >= 7) {
*message++ = result & 0x7f;
result >>= 7;
fill -= 7;
}
}
*message++ = '\0';
}
static const char digits2ascii[16] = {
'?', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '0', '*', '#', '+', '?', '?' };
static void decode_address(const uint8_t *data, int digits, char *address)
{
int i;
for (i = 0; i < digits; i++) {
if (!(i & 1))
*address++ = digits2ascii[(*data) & 0xf];
else
*address++ = digits2ascii[(*data++) >> 4];
}
*address++ = '\0';
}
/* decode sms submit message
* return 1 if done, -1 if failed, 0, if more data is required */
static int decode_sms_submit(nmt_t *nmt, const uint8_t *data, int length)
{
uint8_t ref, msg_ref;
const uint8_t *orig_data, *tpdu_data, *dest_data, *msg_data;
int orig_len, tpdu_len, dest_len, msg_len;
int orig_digits, dest_digits, msg_chars;
uint8_t orig_type, orig_plan, dest_type, dest_plan;
int tp_vpf_present = 0;
/* decode ref */
ref = data[1];
data += 2;
length -= 2;
/* do we have originator address length ? */
if (length < 2) {
PDEBUG(DSMS, DEBUG_DEBUG, "SMS still incomplete, waiting for originator address\n");
return 0;
}
orig_data = 2 + data;
orig_digits = data[0];
orig_type = (data[1] >> 4) & 0x7;
orig_plan = data[1] & 0x0f;
orig_len = (orig_digits + 1) >> 1;
if (length < 2 + orig_len) {
PDEBUG(DSMS, DEBUG_DEBUG, "SMS still incomplete, waiting for originator address digits (got %d of %d)\n", length - 1, orig_len);
return 0;
}
data += 2 + orig_len;
length -= 2 + orig_len;
/* do we have user data IE ? */
if (length < 2) {
PDEBUG(DSMS, DEBUG_DEBUG, "SMS still incomplete, waiting for user data IE\n");
return 0;
}
if (data[0] != RP_IE_USER_DATA) {
PDEBUG(DSMS, DEBUG_NOTICE, "missing user data IE\n");
return -1;
}
tpdu_len = data[1];
tpdu_data = 2 + data;
if (length < 2 + tpdu_len) {
PDEBUG(DSMS, DEBUG_DEBUG, "SMS still incomplete, waiting for TPDU to be complete\n");
return 0;
}
data += 2 + tpdu_len;
length -= 2 + tpdu_len;
/* decode orig address */
char orig_address[orig_digits + 1];
decode_address(orig_data, orig_digits, orig_address);
PDEBUG(DSMS, DEBUG_DEBUG, "Decoded originating addess: '%s'\n", orig_address);
/* go into TP */
data = tpdu_data;
length = tpdu_len;
/* check msg_type */
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
if ((data[0] & MTI_MASK) != MTI_SMS_SUBMIT) {
PDEBUG(DSMS, DEBUG_NOTICE, "especting SUBMIT MTI, but got 0x%02x\n", data[0]);
return -1;
}
if ((data[0] & VPF_MASK))
tp_vpf_present = 1;
data++;
length--;
/* decode msg ref */
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
msg_ref = data[0];
data++;
length--;
/* decode dest address */
if (length < 2) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
dest_data = 2 + data;
dest_digits = data[0];
dest_type = (data[1] >> 4) & 0x7;
dest_plan = data[1] & 0x0f;
dest_len = (dest_digits + 1) >> 1;
if (length < 2 + dest_len) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
data += 2 + dest_len;
length -= 2 + dest_len;
char dest_address[dest_digits + 1];
decode_address(dest_data, dest_digits, dest_address);
PDEBUG(DSMS, DEBUG_DEBUG, "Decoded destination addess: '%s'\n", dest_address);
/* skip above protocol identifier */
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read above protocol identifier IE\n");
return -1;
}
data++;
length--;
/* decode data coding scheme */
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short data coding scheme IE\n");
return -1;
}
if (data[0] != 0) {
PDEBUG(DSMS, DEBUG_NOTICE, "SMS coding unsupported (got 0x%02x)\n", data[0]);
return -1;
}
data++;
length--;
/* skip validity period */
if (tp_vpf_present) {
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read validity period IE\n");
return -1;
}
data++;
length--;
}
/* decode data message text */
if (length < 1) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
msg_data = data + 1;
msg_chars = data[0];
msg_len = (msg_chars * 7 + 7) / 8;
if (length < 1 + msg_len) {
PDEBUG(DSMS, DEBUG_NOTICE, "short read user data IE\n");
return -1;
}
char message[msg_chars + 1];
decode_message(msg_data, msg_len, message);
PDEBUG(DSMS, DEBUG_DEBUG, "Decoded message: '%s'\n", message);
sms_submit(nmt, ref, orig_address, orig_type, orig_plan, msg_ref, dest_address, dest_type, dest_plan, message);
return 1;
}
/* decode deliver report
* return 1 if done, -1 if failed, 0, if more data is required */
static int decode_deliver_report(nmt_t *nmt, const uint8_t *data, int length)
{
uint8_t ref, cause = 0;
int error = 0;
ref = data[1];
if ((data[0] & RP_MTI_MASK) == RP_MT_ERROR) {
error = 1;
if (length < 4) {
PDEBUG(DSMS, DEBUG_DEBUG, "deliver report still incomplete, waiting for cause IE\n");
return 0;
}
if (length < 4 + data[3]) {
PDEBUG(DSMS, DEBUG_DEBUG, "deliver report still incomplete, waiting for cause IE content\n");
return 0;
}
if (data[2] == RP_IE_CAUSE && data[3] > 0)
cause = data[4];
PDEBUG(DSMS, DEBUG_DEBUG, "Decoded delivery report: ERROR, cause=%d\n", cause);
} else
PDEBUG(DSMS, DEBUG_DEBUG, "Decoded delivery report: OK\n");
sms_deliver_report(nmt, ref, error, cause);
return 1;
}
/* receive from DMS layer */
void dms_receive(nmt_t *nmt, const uint8_t *data, int length, int eight_bits)
{
sms_t *sms = &nmt->sms;
int space;
int rc = 0;
char debug_text[length * 5 + 1];
int i;
for (i = 0; i < length; i++)
sprintf(debug_text + i * 5, " 0x%02x", data[i]);
debug_text[length * 5] = '\0';
PDEBUG(DSMS, DEBUG_DEBUG, "Received %d bytes from DMS layer:%s\n", length, debug_text);
if (sms->mt && !sms->data_sent) {
PDEBUG(DSMS, DEBUG_NOTICE, "Ignoring data while we transmit data\n");
return;
}
/* append received data */
space = sizeof(sms->rx_buffer) - sms->rx_count;
if (space < length) {
PDEBUG(DSMS, DEBUG_NOTICE, "Received message exceeds RX buffer, terminating call!\n");
release:
timer_start(&nmt->sms_timer, SMS_RELEASE_TO);
return;
}
memcpy(sms->rx_buffer + sms->rx_count, data, length);
sms->rx_count += length;
/* go into buffer */
data = sms->rx_buffer;
length = sms->rx_count;
/* check if complete */
if (length < 2)
return;
switch (data[0] & RP_MTI_MASK) {
case RP_MT_ACK:
rc = decode_deliver_report(nmt, data, length);
break;
case RP_MT_ERROR:
rc = decode_deliver_report(nmt, data, length);
break;
case RP_MO_DATA:
rc = decode_sms_submit(nmt, data, length);
if (rc < 0)
sms_submit_report(nmt, data[1], FSC_UNSPECIFIED_ERROR);
else if (rc > 0) {
sms_submit_report(nmt, data[1], 0);
}
/* no release, we release afeter the report */
rc = 0;
break;
case RP_SM_READY_TO_RECEIVE:
PDEBUG(DSMS, DEBUG_NOTICE, "Received READY-TO-RECEVIE message.\n");
data += length;
length -= length;
break;
default:
PDEBUG(DSMS, DEBUG_NOTICE, "Received unknown RP message type %d.\n", data[0]);
rc = -1;
}
if (rc)
goto release;
return;
}
static void sms_timeout(struct timer *timer)
{
nmt_t *nmt = (nmt_t *)timer->priv;
sms_release(nmt);
}
/* all data has been sent to mobile */
void dms_all_sent(nmt_t *nmt)
{
sms_t *sms = &nmt->sms;
if (!sms->data_sent) {
if (!sms->mt) {
PDEBUG(DSMS, DEBUG_DEBUG, "Done sending submit report, releasing.\n");
timer_start(&nmt->sms_timer, SMS_RELEASE_TO);
}
sms->data_sent = 1;
PDEBUG(DSMS, DEBUG_DEBUG, "DMS layer indicates acknowledge of sent data\n");
}
}
void sms_reset(nmt_t *nmt)
{
sms_t *sms = &nmt->sms;
PDEBUG(DSMS, DEBUG_DEBUG, "Resetting SMS states\n");
timer_stop(&nmt->sms_timer);
memset(sms, 0, sizeof(*sms));
}

34
src/nmt/sms.h Normal file
View File

@ -0,0 +1,34 @@
#define SMS_TYPE_UKNOWN 0x0
#define SMS_TYPE_INTERNATIONAL 0x1
#define SMS_TYPE_NATIONAL 0x2
#define SMS_TYPE_NETWORK 0x3
#define SMS_TYPE_SUBSCRIBER 0x4
#define SMS_TYPE_ALPHANUMERIC 0x5
#define SMS_TYPE_ABBREVIATED 0x6
#define SMS_TYPE_RESERVED 0x7
#define SMS_PLAN_UNKOWN 0x0
#define SMS_PLAN_ISDN_TEL 0x1
#define SMS_PLAN_DATA 0x3
#define SMS_PLAN_TELEX 0x4
#define SMS_PLAN_NATIONAL 0x8
#define SMS_PLAN_PRIVATE 0x9
#define SMS_PLAN_ERMES 0xa
#define SMS_PLAN_RESERVED 0xf
typedef struct sms {
uint8_t rx_buffer[1024]; /* data received from MS */
int rx_count; /* number of bytes in buffer */
int data_sent; /* all pending data have been sent and was acked */
int mt; /* mobile terminating SMS */
} sms_t;
int sms_init_sender(nmt_t *nmt);
void sms_cleanup_sender(nmt_t *nmt);
void sms_submit(nmt_t *nmt, uint8_t ref, const char *orig_address, uint8_t orig_type, uint8_t orig_plan, int msg_ref, const char *dest_address, uint8_t dest_type, uint8_t dest_plan, const char *message);
void sms_deliver_report(nmt_t *nmt, uint8_t ref, int error, uint8_t cause);
int sms_deliver(nmt_t *nmt, uint8_t ref, const char *orig_address, uint8_t type, uint8_t plan, time_t timestamp, const char *message);
void sms_release(nmt_t *nmt);
void sms_reset(nmt_t *nmt);

12
src/test/Makefile.am
View File

@ -3,7 +3,8 @@ AM_CPPFLAGS = -Wall -g $(all_includes)
noinst_PROGRAMS = \
test_compandor \
test_emphasis \
test_dms
test_dms \
test_sms
test_compandor_SOURCES = test_compandor.c
@ -28,3 +29,12 @@ test_dms_LDADD = \
$(top_builddir)/src/common/libcommon.a \
-lm
test_sms_SOURCES = \
$(top_builddir)/src/nmt/sms.c \
test_sms.c
test_sms_LDADD = \
$(COMMON_LA) \
$(top_builddir)/src/common/libcommon.a \
-lm

120
src/test/test_sms.c Normal file
View File

@ -0,0 +1,120 @@
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include "../common/debug.h"
#include "../common/timer.h"
#include "../nmt/nmt.h"
static const uint8_t test_mo_sms_data[] = {
0x00, 0x00, 0x00, 0xa1, 0x41, 0x0f, 0x11,
0x00, 0x04, 0xa1, 0x8a, 0x51,
0x00, 0x00, 0xff, 0x05, 0xc8, 0x20, 0x93,
0xf9, 0x7c,
};
static const char *test_mo_sms_text = "HALLO";
static const char *test_mt_sms_text = "Moin Moin";
static const char *test_mt_sms_tel = "4948416068";
static time_t test_mt_sms_time = 851430904;
static const uint8_t test_mt_sms_data[] = {
0x01, 0x18, 0x53, 0x4d, 0x53, 0x48, 0x18, 0x41, 0x42, 0x43, 0x02,
0x01,
0x01,
0x41,
0x1a,
0x04,
0x0a, 0x91, 0x94, 0x84, 0x14, 0xa6, 0x86,
0x00,
0x00,
0x69, 0x21, 0x42, 0x31, 0x53, 0x4a, 0x48,
0x09, 0xcd, 0x77, 0xda, 0x0d, 0x6a, 0xbe, 0xd3, 0x6e,
};
static void assert(int condition, char *why)
{
printf("%s = %s\n", why, (condition) ? "TRUE" : "FALSE");
if (!condition) {
printf("\n******************** FAILED ********************\n\n");
exit(-1);
}
}
void ok(void)
{
printf("\n OK ;->\n\n");
sleep(1);
}
static uint8_t dms_buffer[256];
static int dms_buffer_count;
void dms_send(nmt_t *nmt, const uint8_t *data, int length, int eight_bits)
{
memcpy(dms_buffer, data, length);
dms_buffer_count = length;
// int i;
assert(length == sizeof(test_mt_sms_data), "Expecting SMS binary data length to match");
assert(!memcmp(data, test_mt_sms_data, length), "Expecting SMS binary data to match");
// for (i = 0; i < length; i++) {
// printf("(0x%02x)\n", data[i]);
// }
}
void sms_release(nmt_t *nmt)
{
printf("(got release from SMS layer)\n");
}
void sms_submit(nmt_t *nmt, uint8_t ref, const char *orig_address, uint8_t orig_type, uint8_t orig_plan, int msg_ref, const char *dest_address, uint8_t dest_type, uint8_t dest_plan, const char *message)
{
strcpy((char *)dms_buffer, message);
dms_buffer_count = strlen(message);
}
void sms_deliver_report(nmt_t *nmt, uint8_t ref, int error, uint8_t cause)
{
printf("(got deliver report from SMS layer)\n");
}
int main(void)
{
nmt_t *nmt;
int i;
int rc;
debuglevel = DEBUG_DEBUG;
nmt = calloc(sizeof(*nmt), 1);
sms_reset(nmt);
/* deliver */
printf("(delivering SMS)\n");
rc = sms_deliver(nmt, 1, test_mt_sms_tel, SMS_TYPE_INTERNATIONAL, SMS_PLAN_ISDN_TEL, test_mt_sms_time, test_mt_sms_text);
assert(rc == 0, "Expecting sms_deliver() to return 0");
ok();
free(nmt);
nmt = calloc(sizeof(*nmt), 1);
sms_reset(nmt);
printf("(submitting SMS)\n");
dms_buffer_count = 0;
for (i = 0; i < sizeof(test_mo_sms_data); i++)
dms_receive(nmt, test_mo_sms_data + i, 1, 1);
assert(dms_buffer_count == strlen(test_mo_sms_text), "Expecting SMS text length to match");
assert(!memcmp(dms_buffer, test_mo_sms_text, dms_buffer_count), "Expecting SMS text to match");
ok();
return 0;
}