Add ASCII View

Closes #27
but only for SCSI and SATA, NVMe ASCII View is not yet implemented

src/asciiview.cpp

@@ -0,0 +1,81 @@
+#include "asciiview.h"
+
+#include <scsi/sg.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+QVector<unsigned char> AsciiView::readSMARTData(const QString& device_path) {
+    int fd;
+    unsigned char smart_read_cmd[SMART_READ_CMD_LEN] = {0xa1, 0x0c, 0x0e, 0xd0, 1, 0, 0x4f, 0xc2, 0, 0xb0, 0, 0};
+    unsigned char inquiry_cmd[INQUIRY_CMD_LEN] = {0x12, 0, 0, 0, INQUIRY_RESP_LEN, 0};
+    unsigned char smart_read_resp[SMART_READ_RESP_LEN];
+    unsigned char inquiry_resp[INQUIRY_RESP_LEN];
+    unsigned char sense_buffer[SENSE_BUFFER_LEN];
+    sg_io_hdr_t io_hdr;
+    QVector<unsigned char> result;
+    fd = open(device_path.toStdString().c_str(), O_RDONLY);
+    memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
+    io_hdr.interface_id = 'S';
+    io_hdr.cmd_len = SMART_READ_CMD_LEN;
+    io_hdr.mx_sb_len = SENSE_BUFFER_LEN;
+    io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+    io_hdr.dxfer_len = SMART_READ_RESP_LEN;
+    io_hdr.dxferp = smart_read_resp;
+    io_hdr.cmdp = smart_read_cmd;
+    io_hdr.sbp = sense_buffer;
+    io_hdr.timeout = 20000;
+
+    if (ioctl(fd, SG_IO, &io_hdr) < 0) {
+        close(fd);
+    }
+
+    result.append(QArrayDataPointer<unsigned char>::fromRawData(smart_read_resp, SMART_READ_RESP_LEN));
+
+    memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
+    io_hdr.interface_id = 'S';
+    io_hdr.cmd_len = INQUIRY_CMD_LEN;
+    io_hdr.mx_sb_len = SENSE_BUFFER_LEN;
+    io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+    io_hdr.dxfer_len = INQUIRY_RESP_LEN;
+    io_hdr.dxferp = inquiry_resp;
+    io_hdr.cmdp = inquiry_cmd;
+    io_hdr.sbp = sense_buffer;
+    io_hdr.timeout = 20000;
+
+    if (ioctl(fd, SG_IO, &io_hdr) < 0) {
+        close(fd);
+    }
+
+    result.append(QArrayDataPointer<unsigned char>::fromRawData(inquiry_resp, INQUIRY_RESP_LEN));
+    close(fd);
+    return result;
+}
+
+QString AsciiView::hexDump(const QVector<unsigned char> &data) {
+    QString result;
+    qsizetype dataSize = data.size();
+    int offset = 0;
+
+    for (qsizetype i = 0; i < dataSize; i += 16) {
+        QString line;
+        line += QString("%1  ").arg(offset, 8, 16, QChar('0')).toUpper();
+        offset += 16;
+        for (int j = 0; j < 16; ++j) {
+            if (i + j < dataSize) {
+                line += QString("%1 ").arg(static_cast<unsigned char>(data[i + j]), 2, 16, QChar('0')).toUpper();
+            } else {
+                line += "   ";
+            }
+            if (j == 7) line += " ";
+        }
+
+        line += " ";
+        for (int j = 0; j < 16 && i + j < dataSize; ++j) {
+            unsigned char c = data[i + j];
+            line += (c >= 32 && c <= 126) ? QChar::fromLatin1(static_cast<char>(c)) : QChar('.');
+        }
+        result += line + "\n";
+    }
+    return result;
+}