cutter/src/qrcore.cpp

#include "qrcore.h"
#include "sdb.h"

#define DB this->db

QRCore::QRCore(QObject *parent) :
    QObject(parent)
{
    r_cons_new (); // initialize console
    this->projectPath = "";
    this->core = r_core_new ();
    r_core_loadlibs (this->core, R_CORE_LOADLIBS_ALL, NULL);
    // IMPLICIT r_bin_iobind (core->bin, core->io);

    // Otherwise r2 may ask the user for input and Iaito would freeze
    config("scr.interactive","false");

    this->db = sdb_new (NULL, NULL, 0); // WTF NOES
}

QList<QString> QRCore::getFunctionXrefs(ut64 addr) {
    QList<QString> ret = QList<QString>();
    RList *list = r_anal_xrefs_get(core->anal, addr);
    RAnalRef *ref;
    RListIter *it;
    QRListForeach (list, it, RAnalRef, ref) {
        ret << QString ("%1,0x%2,0x%3").arg(
                   QString(ref->type),
                   QString::number(ref->addr,16),
                   QString::number(ref->at,16));
    }
    return ret;
}

QList<QString> QRCore::getFunctionRefs(ut64 addr, char type) {
    QList<QString> ret = QList<QString>();
    //RAnalFunction *fcn = r_anal_get_fcn_at(core->anal, addr, addr);
    RAnalFunction *fcn = r_anal_get_fcn_in(core->anal, addr, 0);
    if (!fcn) {
        eprintf("qcore->getFunctionRefs: No function found\n");
        return ret;
    }
    //eprintf(fcn->name);
    RAnalRef *ref;
    RListIter *it;
    QRListForeach (fcn->refs, it, RAnalRef, ref) {
        if (type == ref->type || type == 0)
            ret << QString ("%1,0x%2,0x%3").arg(
                       QString(ref->type),
                       QString::number(ref->addr,16),
                       QString::number(ref->at,16));
    }
    return ret;
}

int QRCore::getCycloComplex(ut64 addr) {
    QString ret = "";
    RAnalFunction *fcn = r_anal_get_fcn_in(core->anal, addr, 0);
    if (fcn) {
        ret = cmd("afcc @ " + QString(fcn->name));
        return ret.toInt();
    } else {
        eprintf("qcore->getCycloComplex: no fcn found");
        return 0;
    }
}

int QRCore::getFcnSize(ut64 addr) {
    QString ret = "";
    QString tmp_ret = "";
    RAnalFunction *fcn = r_anal_get_fcn_in(core->anal, addr, 0);
    if (fcn) {
        tmp_ret = cmd("afi~size[1] " + QString(fcn->name));
        ret = tmp_ret.split("\n")[0];
        return ret.toInt()/10;
    } else {
        eprintf("qcore->getFcnSize: no fcn found");
        return 0;
    }
}

QList<QString> QRCore::sdbList(QString path) {
    QList<QString> list = QList<QString>();
    Sdb *root = sdb_ns_path (core->sdb, path.toUtf8().constData(), 0);
    if (root) {
        void *vsi;
        ls_iter_t *iter;
        ls_foreach(root->ns, iter, vsi) {
            SdbNs *nsi = (SdbNs*)vsi;
            list << nsi->name;
        }
    }
    return list;
}

QList<QString> QRCore::sdbListKeys(QString path) {
    QList<QString> list = QList<QString>();
    Sdb *root = sdb_ns_path (core->sdb, path.toUtf8().constData(), 0);
    if (root) {
        void *vsi;
        ls_iter_t *iter;
        SdbList *l = sdb_foreach_list(root, false);
        ls_foreach(l, iter, vsi) {
            SdbKv *nsi = (SdbKv*)vsi;
            list << nsi->key;
        }
    }
    return list;
}

QString QRCore::sdbGet(QString path, QString key) {
    Sdb *db = sdb_ns_path (core->sdb, path.toUtf8().constData(), 0);
    if (db) {
        const char *val = sdb_const_get(db, key.toUtf8().constData(), 0);
        if (val && *val)
            return val;
    }
    return QString ("");
}

bool QRCore::sdbSet(QString path, QString key, QString val) {
    Sdb *db = sdb_ns_path (core->sdb, path.toUtf8().constData(), 1);
    if (!db) return false;
    return sdb_set (db, key.toUtf8().constData(), val.toUtf8().constData(), 0);
}

QRCore::~QRCore() {
    r_core_free(this->core);
    r_cons_free ();
}

QString QRCore::cmd(const QString &str) {
    QByteArray cmd = str.toUtf8();
    //r_cons_flush();
    char *res = r_core_cmd_str (this->core, cmd.constData());
    QString o = QString(res ? res : "");
    //r_mem_free was added in https://github.com/radare/radare2/commit/cd28744049492dc8ac25a1f2b3ba0e42f0e9ce93
    r_mem_free(res);
    return o;
}

bool QRCore::loadFile(QString path, uint64_t loadaddr=0LL, uint64_t mapaddr=0LL, bool rw=false, int va=0, int bits = 0, int idx, bool loadbin) {
    RCoreFile *f;
    if (va==0 || va == 2)
        r_config_set_i (core->config, "io.va", va);
    // NO ONE KNOWS WHY THIS IS FIXING A SEGFAULT. core->file should have already a proper value. Pancake dixit
    //core->file = NULL;
    // mapaddr = 0LL;
    printf ("FILE OPEN (%s)\n", path.toUtf8().constData());
    f = r_core_file_open(core, path.toUtf8().constData(), rw?(R_IO_READ|R_IO_WRITE):R_IO_READ, mapaddr);
    if (!f) {
        eprintf ("r_core_file_open failed\n");
        return false;
    }

    if (loadbin) {
        if (va==1) {
            if (r_core_bin_load (core, path.toUtf8().constData(), UT64_MAX)) {
                RBinObject *obj = r_bin_get_object(core->bin);
                if (obj) {
                    eprintf ("BITS %d\n", obj->info->bits);
                }
            } else {
                eprintf ("CANNOT GET RBIN INFO\n");
            }
        } else {
            if (r_core_bin_load (core, path.toUtf8().constData(), UT64_MAX)) {
                RBinObject *obj = r_bin_get_object(core->bin);
                if (obj) {
                    eprintf ("BITS %d\n", obj->info->bits);
                } else {
                    eprintf("Bin load failed\n");
                    return false;
                }
            } else {
                eprintf ("CANNOT GET RBIN INFO\n");
            }
        }
        if (bits != 0) {
            r_config_set_i (core->config, "asm.bits", bits);
        }

#if HAVE_MULTIPLE_RBIN_FILES_INSIDE_SELECT_WHICH_ONE
        if (!r_core_file_open (core, path.toUtf8(), R_IO_READ|rw?R_IO_WRITE:0, mapaddr)) {
            eprintf ("Cannot open file\n");
        } else {
            // load RBin information
            // XXX only for sub-bins
            r_core_bin_load (core, path.toUtf8(), loadaddr);
            r_bin_select_idx (core->bin, NULL, idx);
        }
#endif
    } else {
        // Not loading RBin info coz va = false
    }
    r_core_hash_load(core, path.toUtf8().constData());
    fflush (stdout);
    return true;
}

void QRCore::analyze(int level) {
   /*
    * Levels
    * Nivel 1: afr @ entry0 y main (afr@entry0;afr@main)
    * Nivel 2: aa
    * Nivel 3: aaa
    * Nivel 4: aaaa
    */

    if (level == 1) {
        r_core_cmd0 (core, "afr@entry0;afr@main");
    } else if (level == 2) {
        r_core_cmd0 (core, "aa");
    } else if (level == 3) {
        r_core_cmd0 (core, "aaa");
    } else if (level == 4) {
        r_core_cmd0 (core, "aaaa");
    }
}

void QRCore::renameFunction(QString prev_name, QString new_name) {
    cmd ("afn " + new_name + " " + prev_name);
}

void QRCore::setComment(QString addr, QString cmt) {
    //r_meta_add (core->anal, 'C', addr, 1, cmt.toUtf8());
    cmd("CC " + cmt + " @ " + addr);
}

void QRCore::delComment(ut64 addr) {
    r_meta_del (core->anal, 'C', addr, 1, NULL);
    //cmd (QString("CC-@")+addr);
}

QList<QList<QString>> QRCore::getComments() {
    QList<QList<QString> > ret;
    QString comments = cmd("CC~CCu");
    for (QString line: comments.split ("\n")) {
        QStringList fields = line.split("CCu");
        if (fields.length() == 2) {
            QList<QString> tmp = QList<QString>();
            tmp << fields[1].split("\"")[1].trimmed();
            tmp << fields[0].trimmed();
            ret << tmp;
        }
    }
    return ret;
}

QMap<QString, QList<QList<QString>>> QRCore::getNestedComments() {
    QMap<QString, QList<QList<QString>>> ret;
    QString comments = cmd("CC~CCu");

    for (QString line: comments.split ("\n")) {
        QStringList fields = line.split("CCu");
        if (fields.length() == 2) {
            QList<QString> tmp = QList<QString>();
            tmp << fields[1].split("\"")[1].trimmed();
            tmp << fields[0].trimmed();
            QString fcn_name = this->cmdFunctionAt(fields[0].trimmed());
            if (ret.contains(fcn_name)) {
                ret[fcn_name].append(tmp);
            } else {
                ret[fcn_name].append(tmp);
            }
        }
    }
    return ret;
}

void QRCore::seek(QString addr) {
    if (addr.length()>0)
        seek (this->math(addr.toUtf8().constData()));
}

void QRCore::seek(ut64 addr) {
    r_core_seek (this->core, addr, true);
}

bool QRCore::tryFile(QString path, bool rw) {
    RCoreFile *cf;
    int flags = R_IO_READ;
    if (rw) flags |= R_IO_WRITE;
    cf = r_core_file_open (this->core, path.toUtf8().constData(), flags, 0LL);
    if (!cf) {
        eprintf ("QRCore::tryFile: Cannot open file?\n");
        return false;
    }

    bool is_writable = cf->desc->flags & R_IO_WRITE;
    // if rbin works, tell entry0, and symbols (main, constructor, ..)

    //r_core_file_close (this->core, cf);

    sdb_bool_set (DB, "try.is_writable", is_writable, 0);
    sdb_set (DB, "try.filetype", "elf.i386", 0);
    sdb_set (DB, "try.filename", path.toUtf8().constData(), 0);
    return true;
}

QList<QString> QRCore::getList(const QString & type, const QString & subtype) {
    RListIter *it;
    QList<QString> ret = QList<QString>();

    if (type == "bin") {
        if (subtype == "sections") {
            QString text = cmd ("S*~^S");
            for (QString i: text.split ("\n")) {
                ret << i.mid(2).replace (" ", ",");
            }
        } else if (subtype == "types") {
            ret << "raw";
            auto ft = sdb_const_get (DB, "try.filetype",0);
            if (ft && *ft)
                ret << ft;
        } else if (subtype == "imports") {

            QStringList lines = this->cmd("ii").split("\n");
            foreach (QString line, lines) {
                QStringList tmp = line.split(" ");
                if (tmp.length() > 2) {
                    QString final;
                    foreach (QString field, tmp) {
                        QString value = field.split("=")[1];
                        final.append(value + ",");
                    }
                    ret << final;
                }
            }
        } else if (subtype == "entrypoints") {
            if (math ("entry0") !=0)
                ret << "entry0";
        } else if (subtype == "relocs") {
            RBinReloc *br;
            if (core && core->bin && core->bin->cur && core->bin->cur->o) {
                QRListForeach (core->bin->cur->o->relocs, it, RBinReloc, br) {
                    if (br->import) {
                        // TODO: we want the offset too!
                        QString type = (br->additive?"ADD_":"SET_")+QString::number(br->type);
                        ret << QString ("0x%1,%2,%3").arg(QString::number(br->vaddr,16), type, br->import->name);
                    } else {
                        // TODO: we want the offset too!
                        QString type = (br->additive?"ADD_":"SET_")+QString::number(br->type);
                        ret << QString ("0x%1,%2,reloc_%3").arg(QString::number(br->vaddr,16), type, QString::number(br->vaddr,16));
                    }
                }
            }
        } else if (subtype == "symbols") {
            RBinSymbol *bs;
            if (core && core->bin && core->bin->cur && core->bin->cur->o) {
                QRListForeach (core->bin->cur->o->symbols, it, RBinSymbol, bs) {
                    QString type = QString(bs->bind)+" "+QString(bs->type);
                    ret << QString ("0x%1,%2,%3").arg(QString::number(bs->vaddr,16), type, bs->name);
                }
                /* list entrypoints as symbols too */
                int n = 0;
                RBinAddr *entry;
                QRListForeach (core->bin->cur->o->entries, it, RBinAddr, entry) {
                    ret <<QString ("0x%1,%2,%3%4").arg(QString::number(entry->vaddr,16),"entry","entry", QString::number(n++));
                }
            }
        } else if (subtype == "strings") {
            RBinString *bs;
            if (core && core->bin && core->bin->cur && core->bin->cur->o) {
                QRListForeach (core->bin->cur->o->strings, it, RBinString, bs) {
                    ret << QString ("0x%1,%2").arg(QString::number(bs->vaddr,16), bs->string);
                }
            }
        }
    } else if (type == "asm") {
        if (subtype == "plugins") {
            RAsmPlugin *ap;
            QRListForeach (core->assembler->plugins, it, RAsmPlugin, ap) {
                ret << ap->name;
            }
        } else if (subtype == "cpus") {
            QString funcs = cmd("e asm.cpu=?");
            QStringList lines = funcs.split("\n");
            for (auto cpu : lines) {
                ret << cpu;
            }
        }
    } else if (type == "anal") {
        if (subtype == "plugins") {
            RAnalPlugin *ap;
            QRListForeach (core->anal->plugins, it, RAnalPlugin, ap) {
                ret << ap->name;
            }
        } else if (subtype == "functions") {
            QString funcs = cmd("afl");
            QStringList lines = funcs.split("\n");
            for (auto i : lines) {
                if (i != "") {
                    ret << i.replace(" ", ",").replace(",,",",").replace(",,",",").replace(",,",",");
             }
            }
        }
    } else if (type == "flagspaces") {
        QStringList lines = cmd ("fs*").split ("\n");
        for (auto i : lines) {
            QStringList a = i.replace("*","").split (" ");
            if (a.length()>1)
                ret << a[1];
        }
    } else if (type == "flags") {
        if (subtype!=NULL && subtype != "")
            cmd ("fs "+subtype);
        else cmd ("fs *");
        QString flags = cmd("f*");
        QStringList lines = flags.split("\n");
        for (auto i : lines) {
            if (i[0]!=0&&i[1]=='s') continue; // skip 'fs ..'
            ret << i.mid(2).replace(" ", ",");
        }
    }
    return ret;
}

ut64 QRCore::math(const QString &expr) {
    return r_num_math (this->core?this->core->num:NULL, expr.toUtf8().constData());
}

int QRCore::fcnCyclomaticComplexity(ut64 addr) {
    RAnalFunction *fcn = r_anal_get_fcn_at(core->anal, addr,addr);
    if (fcn)
        return r_anal_fcn_cc(fcn);
    return 0;
}

int QRCore::fcnBasicBlockCount(ut64 addr) {
    //RAnalFunction *fcn = r_anal_get_fcn_at (core->anal, addr, addr);
    RAnalFunction *fcn = r_anal_get_fcn_in (core->anal, addr, 0);
    if (fcn) {
        return r_list_length (fcn->bbs);
    }
    return 0;
}

int QRCore::fcnEndBbs(QString addr) {
    bool ok;
    int offset = addr.toLong(&ok, 16);
    RAnalFunction *fcn = r_anal_get_fcn_in (core->anal, offset, 0);
    if (fcn) {
        QString tmp = this->cmd("afi @ " + addr + " ~end-bbs").split("\n")[0];
        if (tmp.contains(":")) {
            QString endbbs = tmp.split(": ")[1];
            return endbbs.toInt();
        }
    } else {
        return 0;
    }
}

QString QRCore::itoa(ut64 num, int rdx) {
    return QString::number(num, rdx);
}

QString QRCore::config(const QString &k, const QString &v) {
    QByteArray key = k.toUtf8();
    if (v!=NULL) {
        r_config_set (core->config, key.constData(), v.toUtf8().constData());
        return NULL;
    }
    return QString(r_config_get (core->config, key.constData()));
}

int QRCore::config(const QString &k, int v) {
    QByteArray key = k.toUtf8();
    if (v!=-1) {
        r_config_set_i (core->config, key.constData(), v);
        return 0;
    }
    return r_config_get_i (core->config, key.constData());
}

void QRCore::setOptions(QString key) {
    // va
    // lowercase
    // show bytes
    // att syntax
    // asm plugin
    // cpu type
    // anal plugin
}

void QRCore::setCPU (QString arch, QString cpu, int bits, bool temporary=false) {
    config ("asm.arch", arch);
    config ("asm.cpu", cpu);
    config ("asm.bits", bits);
    if (!temporary) {
        default_arch = arch;
        default_cpu = cpu;
        default_bits = bits;
    }
}

void QRCore::setDefaultCPU() {
    config ("asm.arch", default_arch);
    config ("asm.cpu", default_cpu);
    config ("asm.bits", QString::number(default_bits));
}

QString QRCore::assemble(const QString &code) {
    RAsmCode *ac = r_asm_massemble (core->assembler, code.toUtf8().constData());
    QString hex = QString(ac->buf_hex);
    r_asm_code_free (ac);
    return hex;
}

QString QRCore::disassemble(const QString &hex) {
    RAsmCode *ac = r_asm_mdisassemble_hexstr(core->assembler, hex.toUtf8().constData());
    QString code = QString (ac->buf_asm);
    r_asm_code_free (ac);
    return code;
}

RAnalFunction* QRCore::functionAt(ut64 addr) {
    //return r_anal_fcn_find (core->anal, addr, addr);
    return r_anal_get_fcn_in (core->anal, addr, 0);
}

QString QRCore::cmdFunctionAt(QString addr) {
    QString ret;
    //afi~name:1[1] @ 0x08048e44
    //ret = cmd("afi~name[1] @ " + addr);
    ret = cmd("fd @ " + addr + "~[0]");
    return ret.trimmed();
}

int QRCore::get_size()
{
    RBinObject *obj = r_bin_get_object(core->bin);
    //return obj->size;
    return obj->obj_size;
}

ulong QRCore::get_baddr()
{
    ulong baddr = r_bin_get_baddr(core->bin);
    return baddr;
}

QList<QList<QString>> QRCore::get_exec_sections()
{
    QList<QList<QString> > ret;

    QString text = cmd ("S*~^S");
    for (QString line: text.split ("\n")) {
        QStringList fields = line.split(" ");
        if (fields.length() == 7) {
            if (fields[6].contains("x")) {
                QList<QString> tmp = QList<QString>();
                tmp << fields[2];
                tmp << fields[3];
                tmp << fields[5];
                ret << tmp;
            }
        }
    }
    return ret;
}

QString QRCore::getOffsetInfo(QString addr) {
    return cmd("ao @ " + addr);
}

QString QRCore::getOffsetJump(QString addr) {
    QString ret = "";
    ret = cmd("ao @" + addr + "~jump[1]");
    return ret;
}

QString QRCore::getDecompiledCode(QString addr) {
    return cmd("pdc @ " + addr);
}

QString QRCore::getFileInfo() {

    QString info;
    info = cmd("ij");

    return info;
}

QStringList QRCore::getStats() {
    QStringList stats;
    cmd("fs functions");
    stats << cmd("f~?").trimmed();

    QString imps = cmd("ii~?").trimmed();
    stats << imps;

    cmd("fs symbols");
    stats << cmd("f~?").trimmed();
    cmd("fs strings");
    stats << cmd("f~?").trimmed();
    cmd("fs relocs");
    stats << cmd("f~?").trimmed();
    cmd("fs sections");
    stats << cmd("f~?").trimmed();
    cmd("fs *");
    stats << cmd("f~?").trimmed();

    return stats;
}

QString QRCore::getSimpleGraph(QString function) {

    // New styles
    QString graph = "graph [bgcolor=invis, splines=polyline];";
    QString node = "node [style=\"filled\" fillcolor=\"#4183D7\" shape=box fontname=\"Courier\" fontsize=\"8\" color=\"#4183D7\" fontcolor=\"white\"];";
    QString arrow = "edge [arrowhead=\"normal\";]";

    // Old styles
    QString old_graph = "graph [bgcolor=white fontsize=8 fontname=\"Courier\"];";
    //QString old_node = "node [color=lightgray, style=filled shape=box];";
    QString old_node = "node [fillcolor=gray style=filled shape=box];";
    QString old_arrow = "edge [arrowhead=\"vee\"];";

    QString dot = cmd("aga @ " + function).trimmed();
    dot.replace(old_graph, graph);
    dot.replace(old_node, node);
    dot.replace(old_arrow, arrow);
    dot.replace("fillcolor=blue", "fillcolor=\"#EC644B\", color=\"#EC644B\"");

    return dot;
}

void QRCore::getOpcodes() {
    QString opcodes = cmd("?O");
    this->opcodes = opcodes.split("\n");
    // Remove the last empty element
    this->opcodes.removeLast();
    QString registers = cmd("drp~[1]");
    this->regs = registers.split("\n");
    this->regs.removeLast();
}

void QRCore::setSettings() {
    config("scr.color", "false");
    config("scr.interactive","false");
    config("asm.lines","false");
    // Intredazting...
    //config("asm.linesright", "true");
    //config("asm.lineswidth", "15");
    //config("asm.functions", "false");
    config("hex.pairs", "false");
    config("asm.bytespace", "true");
    config("asm.cmtflgrefs", "false");
    config("asm.cmtright", "true");
    config("asm.cmtcol", "70");
    config("asm.xrefs", "false");
    config("asm.fcnlines", "false");

    config("asm.tabs", "10");
    config("asm.tabsonce", "true");
    config("asm.tabsoff", "5");
    config("asm.nbytes", "10");

    config("anal.hasnext", "true");
    config("asm.fcncalls", "false");
    config("asm.calls", "false");
    config("asm.lines.call","false");
    config("asm.flgoff", "true");
    config("anal.autoname", "true");

    // Highlight current node in graphviz
    config("graph.gv.current", "true");

    // Fucking pancake xD
    config("cfg.fortunes.tts", "false");

    // Experimenting with asm options
    //config("asm.spacy", "true");      // We need to handle blank lines on scroll
    //config("asm.section", "true");    // Breaks the disasm and navigation
    //config("asm.invhex", "true");     // Needs further testing
    //config("asm.flags", "false");     // Add with default true in future

    // Used by the HTML5 graph
    config("http.cors","true");
    config("http.sandbox", "false");
    config("http.port", "14170");

    // Temporary fixes
    //config("http.root","/usr/local/share/radare2/last/www");
    //config("http.root","/usr/local/radare2/osx/share/radare2/1.1.0-git/www");
    //config("bin.rawstr", "true");

    // Graph colors and design
    cmd("ec graph.true rgb:88FF88");
    cmd("ec graph.false rgb:FF6666");
    cmd("ec graph.trufae rgb:4183D7");
}