Example #1
0
int
gsm_hex4_to_short( const char*  hex )
{
    int  hi = gsm_hex2_to_byte(hex);
    int  lo = gsm_hex2_to_byte(hex+2);

    if (hi < 0 || lo < 0)
        return -1;

    return ((hi << 8) | lo);
}
Example #2
0
int
sms_utf8_from_message_str( const char*  str, int  strlen, unsigned char*  utf8, int  utf8len )
{
    cbytes_t  p       = (cbytes_t)str;
    cbytes_t  end     = p + strlen;
    int       count   = 0;
    int       escaped = 0;

    while (p < end)
    {
        int  c = p[0];

        /* read the value from the string */
        p += 1;
        if (c >= 128) {
            if ((c & 0xe0) == 0xc0)
                c &= 0x1f;
            else if ((c & 0xf0) == 0xe0)
                c &= 0x0f;
            else
                c &= 0x07;
            p++;
            while (p < end && (p[0] & 0xc0) == 0x80) {
                c = (c << 6) | (p[0] & 0x3f);
                p++;
            }
        }
        if (escaped) {
            switch (c) {
                case '\\':
                    break;
                case 'n':  /* \n is line feed */
                    c = 10;
                    break;

                case 'x':  /* \xNN, where NN is a 2-digit hexadecimal value */
                    if (p+2 > end)
                        return -1;
                    c = gsm_hex2_to_byte( (const char*)p );
                    if (c < 0)
                        return -1;
                    p += 2;
                    break;

                case 'u':  /* \uNNNN where NNNN is a 4-digiti hexadecimal value */
                    if (p + 4 > end)
                        return -1;
                    c = gsm_hex4_to_short( (const char*)p );
                    if (c < 0)
                        return -1;
                    p += 4;
                    break;

                default:  /* invalid escape, return -1 */
                    return -1;
            }
            escaped = 0;
        }
        else if (c == '\\')
        {
            escaped = 1;
            continue;
        }

        /* now, try to write it to the destination */
        if (c < 128) {
            if (count < utf8len)
                utf8[count] = (byte_t) c;
            count += 1;
        }
        else if (c < 0x800) {
            if (count < utf8len)
                utf8[count]   = (byte_t)(0xc0 | ((c >> 6) & 0x1f));
            if (count+1 < utf8len)
                utf8[count+1] = (byte_t)(0x80 | (c & 0x3f));
            count += 2;
        }
        else {
            if (count < utf8len)
                utf8[count]   = (byte_t)(0xc0 | ((c >> 12) & 0xf));
            if (count+1 < utf8len)
                utf8[count+1] = (byte_t)(0x80 | ((c >> 6) & 0x3f));
            if (count+2 < utf8len)
                utf8[count+2] = (byte_t)(0x80 | (c & 0x3f));
            count += 3;
        }
    }
Example #3
0
int
sms_utf8_from_message_str( const char*  str, int  strlen, unsigned char*  utf8, int  utf8len )
{
    cbytes_t  p       = (cbytes_t)str;
    cbytes_t  end     = p + strlen;
    int       count   = 0;
    int       escaped = 0;

    while (p < end)
    {
        int  c = p[0];

        
        p += 1;
        if (c >= 128) {
            if ((c & 0xe0) == 0xc0)
                c &= 0x1f;
            else if ((c & 0xf0) == 0xe0)
                c &= 0x0f;
            else
                c &= 0x07;
            p++;
            while (p < end && (p[0] & 0xc0) == 0x80) {
                c = (c << 6) | (p[0] & 0x3f);
                p++;
            }
        }
        if (escaped) {
            switch (c) {
                case '\\':
                    break;
                case 'n':  
                    c = 10;
                    break;

                case 'x':  
                    if (p+2 > end)
                        return -1;
                    c = gsm_hex2_to_byte( (const char*)p );
                    if (c < 0)
                        return -1;
                    p += 2;
                    break;

                case 'u':  
                    if (p + 4 > end)
                        return -1;
                    c = gsm_hex4_to_short( (const char*)p );
                    if (c < 0)
                        return -1;
                    p += 4;
                    break;

                default:  
                    return -1;
            }
            escaped = 0;
        }
        else if (c == '\\')
        {
            escaped = 1;
            continue;
        }

        
        if (c < 128) {
            if (count < utf8len)
                utf8[count] = (byte_t) c;
            count += 1;
        }
        else if (c < 0x800) {
            if (count < utf8len)
                utf8[count]   = (byte_t)(0xc0 | ((c >> 6) & 0x1f));
            if (count+1 < utf8len)
                utf8[count+1] = (byte_t)(0x80 | (c & 0x3f));
            count += 2;
        }
        else {
            if (count < utf8len)
                utf8[count]   = (byte_t)(0xc0 | ((c >> 12) & 0xf));
            if (count+1 < utf8len)
                utf8[count+1] = (byte_t)(0x80 | ((c >> 6) & 0x3f));
            if (count+2 < utf8len)
                utf8[count+2] = (byte_t)(0x80 | (c & 0x3f));
            count += 3;
        }
    }