smsc_sema.c

主要包括sms网关和wap网关实现说明和源码

    /*status report and submit result will always be 1 segments
      for deliver invoke, if smsc can not send all the data in one packet,
      text data will be truncated ,so it's also 1 packet*/
	
    if(imsgtopseg == 0){
	info(0, "sema_decode: can not interpret more than one segments msg");
	goto error_msg;
    }	

    (*desmsg)->type = cmsgtype;
    (*desmsg)->continuebyte = cmsgcontinuebyte;
    (*desmsg)->encodetype = imsgencodetype;

    /*operation reference*/

    memcpy((*desmsg)->optref, octsrc +2, 4);
    octsrc += 6;
    iusedbyte = 0;
 
    switch(cmsgtype){
    case 's': /* submit invoke result */
	submit_result = gw_malloc(sizeof(struct sm_submit_result)); 
	memset(submit_result,0,sizeof(struct sm_submit_result));

	/* result */ 
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_submit;
	octetlen = 1;
	submit_result->smeresult = get_variable_value(tmp, &octetlen);
	if(submit_result->smeresult == SM_RESULT_SUCCESS)
	{
	    /*smsc reference number*/
	    octsrc += iusedbyte;	
	    iusedbyte = line_scan_IA5_hex(octsrc, 4,tmp);
	    if(iusedbyte <1) goto error_submit;	
	    memcpy(submit_result->smscrefnum, tmp, 4);
	    /*accept time*/
	    octsrc += iusedbyte;	 
	    iusedbyte = line_scan_IA5_hex(octsrc, 14,tmp);
	    if(iusedbyte < 1) goto error_submit;	
	    memcpy(submit_result->accepttime, tmp, 4);
	}
	(*desmsg)->msgbody = submit_result;
	break;
    case 'M': 
	/* deliver invoke*/
	receive_sm = gw_malloc(sizeof(struct sm_deliver_invoke));
	memset(receive_sm, 0, sizeof(struct sm_deliver_invoke));
	/*deliver destination address length*/
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_deliver;
	octetlen = 1;
	receive_sm->destaddlen = get_variable_value(tmp, &octetlen);
	/*deliver destination address*/
	octsrc +=iusedbyte;    
	iusedbyte = line_scan_IA5_hex(octsrc,receive_sm->destaddlen,tmp);
	if(iusedbyte < 1) goto error_deliver;
	receive_sm->destadd= octstr_create_from_data(tmp,  receive_sm->destaddlen);
	/*smsc reference number*/
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 4,tmp);
	if(iusedbyte < 1) goto error_deliver;
	memcpy(receive_sm->smscrefnum, tmp, 4);
	/*originate address length*/
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_deliver;
	octetlen = 1;
	receive_sm->origaddlen = get_variable_value(tmp, &octetlen);
	/*originate address*/
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, receive_sm->origaddlen, tmp);
	if(iusedbyte < 1) goto error_deliver;
	receive_sm->origadd= octstr_create_from_data(tmp,receive_sm->origaddlen);
	/* data code scheme */ 
	octsrc +=iusedbyte;
	if(iusedbyte < 1) goto error_deliver;
	iusedbyte = line_scan_IA5_hex(octsrc, 1,tmp);
	octetlen = 1;
	receive_sm->DCS = get_variable_value(tmp, &octetlen);
	if(receive_sm->DCS != ENCODE_IA5 && receive_sm->DCS !=ENCODE_GSM){
	    info(0, "sema_decode, Data encoding scheme not supported");
	    goto error_deliver;
	}
	/* protocol */ 
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 1,tmp);
	if(iusedbyte < 1) goto error_deliver;
	octetlen = 1;
	receive_sm->protocal = get_variable_value(tmp, &octetlen);
	/* reply path */
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 1,tmp);
	if(iusedbyte < 1) goto error_deliver;
	octetlen = 1;
	receive_sm->replypath = get_variable_value(tmp, &octetlen);
	/*text size in septect*/
	octsrc +=iusedbyte;
	iusedbyte = internal_char_IA5_to_hex(octsrc, tmp);
	if(iusedbyte < 1) goto error_deliver;
	receive_sm->textsizeseptet = tmp[0];
	/*text size in octects*/
	octsrc +=iusedbyte;
	iusedbyte = internal_char_IA5_to_hex(octsrc, tmp);
	if(iusedbyte < 1) goto error_deliver;
	receive_sm->textsizeoctect = tmp[0];
	octsrc+=iusedbyte;
	
	/*message text*/
	
	iusedbyte = 0;
	memset(tmp,0,sizeof(tmp));						
	if(receive_sm->DCS == ENCODE_IA5 && receive_sm->textsizeoctect > 0) 
	{
	    iusedbyte = line_scan_IA5_hex(octsrc,receive_sm->textsizeoctect,tmp);	   
	    if(iusedbyte < 1) goto error_deliver;	
	    receive_sm->shortmsg =octstr_create_from_data( tmp,receive_sm->textsizeoctect);
	}
	else if(receive_sm->DCS == ENCODE_GSM &&  receive_sm->textsizeseptet > 0)
	{
	    memset(tmpgsm,0,sizeof(tmpgsm));
	  
	    iusedbyte = line_scan_IA5_hex(octsrc,receive_sm->textsizeoctect,tmp);
	    if(iusedbyte < 1) goto error_deliver;
	    line_scan_hex_GSM7(tmp,receive_sm->textsizeoctect,
			       receive_sm->textsizeseptet, tmpgsm);
	    receive_sm->shortmsg = octstr_create_from_data(tmpgsm,
							   receive_sm->textsizeseptet);
	
	}
	else if(receive_sm->textsizeoctect <= 0)
	  receive_sm->shortmsg = octstr_create("");

	/*accepttime*/
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc,14,tmp);
	if(iusedbyte < 1) goto error_deliver;
	memcpy(receive_sm->accepttime, tmp,14);
	/*valid time*/
	octsrc +=iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc,14,tmp);
	if(iusedbyte < 1) goto error_deliver;
	memcpy(receive_sm->invoketime, tmp,14);
	(*desmsg)->msgbody = receive_sm;
	break;
    case 'T': 
	/* status report invoke */
	receive_report = gw_malloc(sizeof(struct sm_statusreport_invoke)); 
	memset(receive_report,0,sizeof(struct sm_statusreport_invoke));
	/*deliver msisdn address length*/
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_receive;
	octetlen = 1;
	receive_report->msisdnlen = get_variable_value(tmp, &octetlen);
	/*msisdn*/
	octsrc += iusedbyte;    
	iusedbyte = line_scan_IA5_hex(octsrc, receive_report->msisdnlen, tmp);
	if(iusedbyte < 1) goto error_receive;
	receive_report->msisdn = octstr_create_from_data( tmp,receive_report->msisdnlen);
	/*sme reference type*/
	octsrc += iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_receive;
	octetlen = 1;
	receive_report->smetype = get_variable_value(tmp, &octetlen);
	/*sme reference number */
	octsrc += iusedbyte;    
	iusedbyte = line_scan_IA5_hex(octsrc,4, tmp);
	if(iusedbyte < 1) goto error_receive;
	memcpy(receive_report->smerefnum ,tmp, 4);
	/*smsc reference number */
	octsrc += iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc,4, tmp);
	if(iusedbyte < 1) goto error_receive;
	memcpy(receive_report->smscrefnum ,tmp, 4);
	/*accepted time*/ 
	octsrc += iusedbyte;    
	iusedbyte = line_scan_IA5_hex(octsrc,14, tmp);
	if(iusedbyte < 1) goto error_receive;
	memcpy(receive_report->accepttime ,tmp, 4);
	/*status*/
	octsrc += iusedbyte;    
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_receive;
	octetlen = 1; 
	receive_report->status = get_variable_value(tmp, &octetlen);
	octsrc += iusedbyte;
	if(receive_report->status != 6) /*6 means unable to deliver , but retry*/
	{
	    iusedbyte = line_scan_IA5_hex(octsrc,14, tmp);
	    if(iusedbyte < 1) goto error_receive;
	    memcpy(receive_report->completetime ,tmp, 14);
	}
	else
	{
	    iusedbyte = line_scan_IA5_hex(octsrc,14, tmp);
	    if(iusedbyte < 1) goto error_receive;
	    memcpy(receive_report->intermediatime ,tmp, 14);
	}
	if(receive_report->status == 6 || receive_report->status == 1) /*unable to deliver ,both case */
	{       
	    octsrc += iusedbyte;
	    iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	    if(iusedbyte < 1) goto error_receive;
	    octetlen = 1;
	    receive_report->failreason = get_variable_value(tmp, &octetlen);
	}
	/*deliver orignate address length*/
	octsrc += iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, 1, tmp);
	if(iusedbyte < 1) goto error_receive;
	octetlen = 1;
	receive_report->origaddlen = get_variable_value(tmp, &octetlen);
	/*orignate address*/
	octsrc += iusedbyte;
	iusedbyte = line_scan_IA5_hex(octsrc, receive_report->origaddlen, tmp);
	if(iusedbyte < 1) goto error_receive;
	receive_report->origadd = octstr_create_from_data(tmp,  receive_report->msisdnlen);
	/* invoke time */
	octsrc += iusedbyte;     
	iusedbyte = line_scan_IA5_hex(octsrc,14, tmp);
	if(iusedbyte < 1){
	    goto error_receive;
	}
	memcpy(receive_report->invoketime ,tmp, 14);
	(*desmsg)->msgbody = receive_report;
	break;
    }
    return 1;

no_msg:
    info(0,"sema_decode: msg is empty");
    return 0;
error_receive:
    gw_free(receive_report);
    goto error_msg;
error_submit:
    gw_free(submit_result);
    goto error_msg;
error_deliver:
    gw_free(receive_sm);
    goto error_msg;
error_msg:
    info(0,"sema_decode:msg parameter is not recognized or unsupported");
    return 0;
}


static int sema_encode_msg(sema_msg* pmsg, char* str) {
    struct sm_submit_invoke *submit_sm = NULL;
    Octstr *IA5msg = NULL;
    int tSize = 0;
    unsigned char oc1byte[10];
    IA5msg = octstr_create("");	
    switch(pmsg->type)
    {
    case 'S':
	submit_sm = (struct sm_submit_invoke *) pmsg->msgbody; 
	write_variable_value(submit_sm->msisdnlen, oc1byte); /*msisdn len*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	line_append_hex_IA5(IA5msg, 
			    octstr_get_cstr(submit_sm->msisdn),
			    octstr_len(submit_sm->msisdn)); /*msisdn*/
	write_variable_value(submit_sm->smereftype, oc1byte);/*smetype*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	line_append_hex_IA5(IA5msg, submit_sm->smerefnum,4);/*sme reference*/
	write_variable_value(submit_sm->priority, oc1byte);/*priority*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	write_variable_value(submit_sm->origaddlen, oc1byte); /*orignating address length*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	line_append_hex_IA5(IA5msg, 
			    octstr_get_cstr(submit_sm->origadd),
			    octstr_len(submit_sm->origadd)); /*orignating address*/
	write_variable_value(submit_sm->validperiodtype, oc1byte); /*valid period type*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	write_variable_value(submit_sm->validperiodrela, oc1byte); /*relative period*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	write_variable_value(submit_sm->DCS, oc1byte);/*data code scheme*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	write_variable_value(submit_sm->statusreportrequest, oc1byte);/*request report*/
	line_append_hex_IA5(IA5msg, oc1byte,1);
	write_variable_value(submit_sm->protocal, oc1byte);/*protocal id*/
	line_append_hex_IA5(IA5msg, oc1byte, 1);
	write_variable_value(submit_sm->replypath, oc1byte);/*use reply path*/
	line_append_hex_IA5(IA5msg, oc1byte, 1);
	
            /*text size in 7 bits char*/
      	tSize = internal_char_hex_to_IA5(submit_sm->textsizeseptet,oc1byte);
	octstr_insert_data(IA5msg, octstr_len(IA5msg), oc1byte, tSize);

            /*text size in 8 bits char*/
	tSize = internal_char_hex_to_IA5(submit_sm->textsizeoctect,oc1byte);  
 	octstr_insert_data(IA5msg, octstr_len(IA5msg), oc1byte, tSize);

	line_append_hex_IA5(IA5msg,		      
			    octstr_get_cstr(submit_sm->shortmsg),
			    submit_sm->textsizeoctect); /*msg text*/
	memcpy(str,octstr_get_cstr(IA5msg),octstr_len(IA5msg));
	octstr_destroy(IA5msg);
	return 1;
    }
    return 0;
}


static int line_scan_hex_GSM7(unsigned char* from, 
			      int octects ,int spetets, unsigned char* to)
{
    char* cin2 =NULL;
    unsigned char c;
    char cin7[8];
    int i, pos, value;

    int lenin2=octects*8;
    cin2 = gw_malloc(lenin2);

    memset(cin2,48,lenin2); /*make many zeros*/
    /*tranverse the octects first, so ABC -> CBA(in bin form)*/
    for(i = 0; i < octects; i ++)
    {
	c = *(from + i);
      
	if(c & 1) 
	    cin2[(octects-1-i)*8 +7] = 49;
	if(c & 2) 
	    cin2[(octects-1-i)*8 +6] = 49;
	if(c & 4) 
	    cin2[(octects-1-i)*8 +5] = 49;
	if(c & 8) 
	    cin2[(octects-1-i)*8 +4] = 49;
	if(c & 16) 
	    cin2[(octects-1-i)*8 +3] = 49;
	if(c & 32) 
	    cin2[(octects-1-i)*8 +2] = 49;
	if(c & 64) 
	    cin2[(octects-1-i)*8 +1] = 49;
	if(c & 128) 
	    cin2[(octects-1-i)*8] = 49;
    }
  
    i= 1;
    while( i <= spetets ){
	pos=lenin2 -1 -(i*7 -1);
	memset(cin7,0,sizeof(cin7));
	memcpy(cin7, cin2 + pos, 7);
	value = 0;

	if(cin7[6] == '1')
	    value += 1;
	if(cin7[5] == '1')
	    value += 2;
	if(cin7[4] == '1')
	    value += 4;
	if(cin7[3] == '1')
	    value += 8;
	if(cin7[2] == '1')
	    value += 16;
	if(cin7[1] == '1')
	    value += 32;
	if(cin7[0] == '1')
	    value += 64;
	  
	to[i-1]=internal_char_hex_to_gsm(value);
	i +=1;
    }
    return i;
  
}

/* check SMS2000 Version 4.0 B.4.2.3 */
static int line_append_hex_IA5(Octstr* des, unsigned char* src, int len)
{

    unsigned char IA5char[3];
    unsigned char tmp[1024];
    int j=0;
    int i=0, iall=0;
    for(i=0; i<len; i++)
    {
	memset(IA5char, 0, sizeof(IA5char));
	j=internal_char_hex_to_IA5(*(src+i),IA5char);
	if(j >0){
	    memcpy(tmp+iall,IA5char,j);
	    iall += j;
	}
    }
    octstr_insert_data(des,octstr_len(des),tmp,iall);
    return iall;
}


/* check SMS2000 Version 4.0 B.4.2.3 */
static int line_scan_IA5_hex(unsigned char* from, 
			     int hexnum, unsigned char* to)
{
    unsigned char cha[1];
    int cn =0, cnall = 0, i = 0;
    char *tmpfrom = NULL;
    tmpfrom = from;
    for(i = 0; i< hexnum; i++)
    {
	cn=internal_char_IA5_to_hex(tmpfrom, cha);
	if(cn >0)
	{
	    memcpy(to+i,cha,1);
	    tmpfrom += cn;
	    cnall += cn;
	}
	else
	    return -1;
    }
    return cnall;
}


static unsigned char internal_char_hex_to_gsm(unsigned char from)
{
    switch (from){
    case 0x00: return '@';	
    case 0x01: return '