projects/smsdaemon/SmsPdu.cpp

/* using http://sourceforge.net/projects/libserial/
 */


#include "SmsPdu.h"

#include <string>
#include <sstream>

#include <time.h>
#include <stdlib.h> 


#include "util.h"


using namespace std;


namespace SmsPdu
{


vector<unsigned char> BcdEncode(string input)
{
        char buf[2] = " ";
        vector<unsigned char> result;

        unsigned char current;
        for (unsigned int i=0; i<input.length(); ++i)
        {
                buf[0] = input.at(i);
                unsigned char tmp = atoi(buf);

                if ( (i%2) == 0)
                {
                        current = tmp;
                }
                else
                {
                        current |= (tmp<<4);
                        result.push_back(current);
                }
        }

        return result;
}

string HexformatVector(vector<unsigned char> vec)
{
        ostringstream os;

        for (unsigned int i=0; i<vec.size(); ++i)
        {
                os.width(2);
                os.fill('0');
                os << hex << uppercase << static_cast<unsigned int>(vec.at(i));
        }


        return os.str();
}

vector<unsigned char> Encode7to8bit(std::string str)
{
        vector<unsigned char> buf;

        int shift = 0;
        for (unsigned int i=0; i<str.size(); ++i)
        {
                unsigned char current = str.at(i) & 0x7F;
                unsigned char next = ( (i+1)<str.size()) ? str.at(i+1) : 0;
                next &= 0x7F;

                current >>= shift;
                next <<= (7-shift);

                unsigned char byte = current | next;
                buf.push_back(byte);

                if (shift == 6)
                        i++;

                shift = (shift+1) % 7;

        }

        return buf;
}

vector<PduInfo> CreateSmsPdu(string to, string message, bool allowMultipart)
{
        bool multipart = allowMultipart && message.length() > 160;

        const unsigned char UHDI = multipart ? 0x40 : 0;

        srand(time(0));
        unsigned char csms_ref = rand() % 256;

        int part_count;
        if (multipart)
        {
                part_count = message.length() / 153;
                if (message.length() % 153)
                        part_count++;
        }
        else
        {
                part_count = 1;
        }

        vector<PduInfo> result;
        for (int partnr = 0; partnr < part_count; ++partnr)
        {
                vector<unsigned char> pdu;

                pdu.push_back(0x00); // use SMSC from phone
                pdu.push_back( 0x01|UHDI ); // first octet -- no timeout
                pdu.push_back(0x00); // TP-MR message reference
                pdu.push_back(to.length() ); //length of phone nr
                pdu.push_back(0x91); // type of address (international nr  + ISDN/telephone range) - else try 0x81

                vector<unsigned char> phone = BcdEncode(to);
                pdu.insert( pdu.end(), phone.begin(), phone.end());

                pdu.push_back(0x00); // Protocol identifier
                pdu.push_back(0x00); // Data coding scheme

                string message_part;
                if (multipart)
                {
                        message_part = message.substr(0,153);
                        message.erase(0,153);

                        pdu.push_back( message_part.length()+5 );  //UserDataLength
                        pdu.push_back( 0x00 ); // UDH[0] 
                        pdu.push_back( 0x03 ); // UDH[1] = UDH_LEN
                        pdu.push_back( csms_ref ); //UDH[2] 
                        pdu.push_back( part_count );
                        pdu.push_back( partnr );

                }
                else
                {
                        message_part = message.substr(0,160); //truncate to 160

                        pdu.push_back( message_part.length() ); //UserDataLength
                }

                vector<unsigned char> userData = Encode7to8bit(message_part);

                pdu.insert( pdu.end(), userData.begin(), userData.end());

                PduInfo info;
                info.len = pdu.size()-1;
                info.pdu = HexformatVector(pdu);
                result.push_back(info);

        }
        return result;
}

}
1	/* using http://sourceforge.net/projects/libserial/
2	*/
3
4
5	#include "SmsPdu.h"
6
7	#include <string>
8	#include <sstream>
9
10	#include <time.h>
11	#include <stdlib.h>
12
13
14	#include "util.h"
15
16
17	using namespace std;
18
19
20	namespace SmsPdu
21	{
22
23
24	vector<unsigned char> BcdEncode(string input)
25	{
26	char buf[2] = " ";
27	vector<unsigned char> result;
28
29	unsigned char current;
30	for (unsigned int i=0; i<input.length(); ++i)
31	{
32	buf[0] = input.at(i);
33	unsigned char tmp = atoi(buf);
34
35	if ( (i%2) == 0)
36	{
37	current = tmp;
38	}
39	else
40	{
41	current \|= (tmp<<4);
42	result.push_back(current);
43	}
44	}
45
46	return result;
47	}
48
49	string HexformatVector(vector<unsigned char> vec)
50	{
51	ostringstream os;
52
53	for (unsigned int i=0; i<vec.size(); ++i)
54	{
55	os.width(2);
56	os.fill('0');
57	os << hex << uppercase << static_cast<unsigned int>(vec.at(i));
58	}
59
60
61	return os.str();
62	}
63
64	vector<unsigned char> Encode7to8bit(std::string str)
65	{
66	vector<unsigned char> buf;
67
68	int shift = 0;
69	for (unsigned int i=0; i<str.size(); ++i)
70	{
71	unsigned char current = str.at(i) & 0x7F;
72	unsigned char next = ( (i+1)<str.size()) ? str.at(i+1) : 0;
73	next &= 0x7F;
74
75	current >>= shift;
76	next <<= (7-shift);
77
78	unsigned char byte = current \| next;
79	buf.push_back(byte);
80
81	if (shift == 6)
82	i++;
83
84	shift = (shift+1) % 7;
85
86	}
87
88	return buf;
89	}
90
91	vector<PduInfo> CreateSmsPdu(string to, string message, bool allowMultipart)
92	{
93	bool multipart = allowMultipart && message.length() > 160;
94
95	const unsigned char UHDI = multipart ? 0x40 : 0;
96
97	srand(time(0));
98	unsigned char csms_ref = rand() % 256;
99
100	int part_count;
101	if (multipart)
102	{
103	part_count = message.length() / 153;
104	if (message.length() % 153)
105	part_count++;
106	}
107	else
108	{
109	part_count = 1;
110	}
111
112	vector<PduInfo> result;
113	for (int partnr = 0; partnr < part_count; ++partnr)
114	{
115	vector<unsigned char> pdu;
116
117	pdu.push_back(0x00); // use SMSC from phone
118	pdu.push_back( 0x01\|UHDI ); // first octet -- no timeout
119	pdu.push_back(0x00); // TP-MR message reference
120	pdu.push_back(to.length() ); //length of phone nr
121	pdu.push_back(0x91); // type of address (international nr + ISDN/telephone range) - else try 0x81
122
123	vector<unsigned char> phone = BcdEncode(to);
124	pdu.insert( pdu.end(), phone.begin(), phone.end());
125
126	pdu.push_back(0x00); // Protocol identifier
127	pdu.push_back(0x00); // Data coding scheme
128
129	string message_part;
130	if (multipart)
131	{
132	message_part = message.substr(0,153);
133	message.erase(0,153);
134
135	pdu.push_back( message_part.length()+5 ); //UserDataLength
136	pdu.push_back( 0x00 ); // UDH[0]
137	pdu.push_back( 0x03 ); // UDH[1] = UDH_LEN
138	pdu.push_back( csms_ref ); //UDH[2]
139	pdu.push_back( part_count );
140	pdu.push_back( partnr );
141
142	}
143	else
144	{
145	message_part = message.substr(0,160); //truncate to 160
146
147	pdu.push_back( message_part.length() ); //UserDataLength
148	}
149
150	vector<unsigned char> userData = Encode7to8bit(message_part);
151
152	pdu.insert( pdu.end(), userData.begin(), userData.end());
153
154	PduInfo info;
155	info.len = pdu.size()-1;
156	info.pdu = HexformatVector(pdu);
157	result.push_back(info);
158
159	}
160	return result;
161	}
162
163	}