radare2/libr/anal/anal.c
2014-09-30 03:38:24 +02:00

287 lines
7.0 KiB
C

/* radare - LGPL - Copyright 2009-2014 - pancake, nibble */
#include <r_anal.h>
#include <r_util.h>
#include <r_list.h>
#include <r_io.h>
#include "../config.h"
R_LIB_VERSION(r_anal);
static RAnalPlugin *anal_static_plugins[] =
{ R_ANAL_STATIC_PLUGINS };
/*
static RAnalVarType anal_default_vartypes[] =
{{ "char", "c", 1 },
{ "byte", "b", 1 },
{ "int", "i", 4 },
{ "int32", "d", 4 },
{ "int64", "q", 8 },
{ "dword", "x", 4 },
{ "float", "f", 4 },
{ NULL, NULL, 0 }};
*/
static void r_anal_type_init(RAnal *anal) {
Sdb *D = anal->sdb_types;
sdb_set (D, "unsigned int", "type", 0);
sdb_set (D, "unsigned char", "type", 0);
sdb_set (D, "unsigned short", "type", 0);
sdb_set (D, "int", "type", 0);
sdb_set (D, "long", "type", 0);
sdb_set (D, "void *", "type", 0);
sdb_set (D, "char", "type", 0);
sdb_set (D, "char *", "type", 0);
sdb_set (D, "const char*", "type", 0);
sdb_set (D, "type.unsigned int", "i", 0);
sdb_set (D, "type.unsigned char", "b", 0);
sdb_set (D, "type.unsigned short", "w", 0);
sdb_set (D, "type.int", "d", 0);
sdb_set (D, "type.long", "x", 0);
sdb_set (D, "type.void *", "p", 0);
sdb_set (D, "type.char", "x", 0);
sdb_set (D, "type.char *", "*z", 0);
sdb_set (D, "type.const char*", "*z", 0);
}
R_API RAnal *r_anal_new() {
int i;
RAnalPlugin *static_plugin;
RAnal *anal = R_NEW0 (RAnal);
if (!anal) return NULL;
anal->nopskip = R_TRUE; // skip nops in code analysis
anal->decode = R_TRUE; // slow slow if not used
anal->sdb = sdb_new (NULL, NULL, 0);
anal->sdb_fcns = sdb_ns (anal->sdb, "fcns", 1);
anal->sdb_meta = sdb_ns (anal->sdb, "meta", 1);
anal->sdb_hints = sdb_ns (anal->sdb, "hints", 1);
anal->sdb_xrefs = sdb_ns (anal->sdb, "xrefs", 1);
//anal->sdb_vars = sdb_ns (anal->sdb, "vars", 1); // its inside fcns right now
//anal->sdb_args = sdb_ns (anal->sdb, "args", 1);
//anal->sdb_ret = sdb_ns (anal->sdb, "ret", 1);
//anal->sdb_locals = sdb_ns (anal->sdb, "locals", 1);
anal->sdb_types = sdb_ns (anal->sdb, "types", 1);
anal->printf = (PrintfCallback) printf;
r_anal_type_init (anal);
r_anal_xrefs_init (anal);
anal->diff_thbb = R_ANAL_THRESHOLDBB;
anal->diff_thfcn = R_ANAL_THRESHOLDFCN;
anal->split = R_TRUE; // used from core
anal->syscall = r_syscall_new ();
r_io_bind_init (anal->iob);
r_flag_bind_init (anal->flb);
anal->reg = r_reg_new ();
anal->lineswidth = 0;
anal->fcns = r_anal_fcn_list_new ();
#if USE_NEW_FCN_STORE
anal->fcnstore = r_listrange_new ();
#endif
anal->refs = r_anal_ref_list_new ();
anal->types = r_anal_type_list_new ();
r_anal_set_bits (anal, 32);
r_anal_set_big_endian (anal, R_FALSE);
anal->plugins = r_list_new ();
anal->plugins->free = (RListFree) r_anal_plugin_free;
for (i=0; anal_static_plugins[i]; i++) {
static_plugin = R_NEW (RAnalPlugin);
*static_plugin = *anal_static_plugins[i];
r_anal_add (anal, static_plugin);
}
/*
for (i=0; anal_default_vartypes[i].name; i++)
r_anal_var_type_add (anal, anal_default_vartypes[i].name,
anal_default_vartypes[i].size, anal_default_vartypes[i].fmt);
*/
return anal;
}
R_API void r_anal_plugin_free (RAnalPlugin *p) {
if (p && p->fini) {
p->fini (p);
}
}
R_API RAnal *r_anal_free(RAnal *a) {
if (!a) return NULL;
/* TODO: Free anals here */
R_FREE (a->cpu);
r_list_free (a->plugins);
a->fcns->free = r_anal_fcn_free;
r_list_free (a->fcns);
// might provoke double frees since this is used in r_anal_fcn_insert()
//r_listrange_free (a->fcnstore);
r_list_free (a->refs);
r_list_free (a->types);
r_reg_free (a->reg);
r_anal_op_free (a->queued);
a->sdb = NULL;
r_syscall_free (a->syscall);
sdb_ns_free (a->sdb);
if (a->esil)
r_anal_esil_free (a->esil);
// r_io_free(anal->iob.io); // need r_core (but recursive problem to fix)
memset (a, 0, sizeof (RAnal));
free (a);
return NULL;
}
R_API void r_anal_set_user_ptr(RAnal *anal, void *user) {
anal->user = user;
}
R_API int r_anal_add(RAnal *anal, RAnalPlugin *foo) {
if (foo->init)
foo->init (anal->user);
r_list_append (anal->plugins, foo);
return R_TRUE;
}
// TODO: Must be deprecated
R_API int r_anal_list(RAnal *anal) {
RAnalPlugin *h;
RListIter *it;
r_list_foreach (anal->plugins, it, h) {
anal->printf ("anal %-10s %s\n", h->name, h->desc);
}
return R_FALSE;
}
R_API int r_anal_use(RAnal *anal, const char *name) {
RListIter *it;
RAnalPlugin *h;
r_list_foreach (anal->plugins, it, h) {
if (!strcmp (h->name, name)) {
anal->cur = h;
r_anal_set_reg_profile (anal);
if (anal->esil) {
r_anal_esil_free (anal->esil);
anal->esil = NULL;
}
return R_TRUE;
}
}
return R_FALSE;
}
R_API int r_anal_set_reg_profile(RAnal *anal) {
if (anal && anal->cur && anal->cur->set_reg_profile)
return anal->cur->set_reg_profile (anal);
return R_FALSE;
}
R_API int r_anal_set_bits(RAnal *anal, int bits) {
switch (bits) {
case 8:
case 16:
case 32:
case 64:
anal->bits = bits;
r_anal_set_reg_profile (anal);
return R_TRUE;
}
return R_FALSE;
}
R_API void r_anal_set_cpu(RAnal *anal, const char *cpu) {
free (anal->cpu);
anal->cpu = cpu ? strdup (cpu) : NULL;
}
R_API int r_anal_set_big_endian(RAnal *anal, int bigend) {
anal->big_endian = bigend;
return R_TRUE;
}
R_API char *r_anal_strmask (RAnal *anal, const char *data) {
RAnalOp *op;
ut8 *buf;
char *ret = NULL;
int oplen, len, idx = 0;
ret = strdup (data);
buf = malloc (1+strlen (data));
op = r_anal_op_new ();
if (op == NULL || ret == NULL || buf == NULL) {
free (op);
free (buf);
free (ret);
return NULL;
}
len = r_hex_str2bin (data, buf);
while (idx < len) {
if ((oplen = r_anal_op (anal, op, 0, buf+idx, len-idx)) <1)
break;
switch (op->type) {
case R_ANAL_OP_TYPE_CALL:
case R_ANAL_OP_TYPE_UCALL:
case R_ANAL_OP_TYPE_CJMP:
case R_ANAL_OP_TYPE_JMP:
case R_ANAL_OP_TYPE_UJMP:
if (op->nopcode != 0)
memset (ret+(idx+op->nopcode)*2,
'.', (oplen-op->nopcode)*2);
}
idx += oplen;
}
free (op);
free (buf);
return ret;
}
R_API void r_anal_trace_bb(RAnal *anal, ut64 addr) {
RAnalBlock *bbi;
RAnalFunction *fcni;
RListIter *iter, *iter2;
r_list_foreach (anal->fcns, iter, fcni) {
r_list_foreach (fcni->bbs, iter2, bbi) {
if (addr>=bbi->addr && addr<(bbi->addr+bbi->size)) {
bbi->traced = R_TRUE;
break;
}
}
}
}
R_API RList* r_anal_get_fcns (RAnal *anal) { return anal->fcns; }
R_API int r_anal_project_load(RAnal *anal, const char *prjfile) {
if (prjfile && *prjfile)
return r_anal_xrefs_load (anal, prjfile);
return R_FALSE;
}
R_API int r_anal_project_save(RAnal *anal, const char *prjfile) {
if (!prjfile || !*prjfile)
return R_FALSE;
r_anal_xrefs_save (anal, prjfile);
return R_TRUE;
}
R_API RAnalOp *r_anal_op_hexstr(RAnal *anal, ut64 addr, const char *str) {
int len;
ut8 *buf;
RAnalOp *op = R_NEW0 (RAnalOp);
if (!op) return NULL;
buf = malloc (strlen (str)+1);
if (!buf) {
free (op);
return NULL;
}
len = r_hex_str2bin (str, buf);
r_anal_op (anal, op, addr, buf, len);
return op;
}
R_API int r_anal_op_is_eob (RAnalOp *op) {
switch (op->type) {
case R_ANAL_OP_TYPE_JMP:
case R_ANAL_OP_TYPE_UJMP:
case R_ANAL_OP_TYPE_CJMP:
case R_ANAL_OP_TYPE_RET:
case R_ANAL_OP_TYPE_TRAP:
return 1;
}
return 0;
}