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107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
/* radare - LGPL - Copyright 2015-2021 - pancake, rkx1209 */
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#include <r_debug.h>
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#include <r_hash.h>
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R_API void r_debug_snap_free(RDebugSnap *snap) {
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if (snap) {
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free (snap->name);
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free (snap->data);
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R_FREE (snap);
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}
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}
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R_API RDebugSnap *r_debug_snap_map(RDebug *dbg, RDebugMap *map) {
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r_return_val_if_fail (dbg && map, NULL);
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if (map->size < 1) {
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eprintf ("Invalid map size\n");
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return NULL;
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}
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// TODO: Support streaming memory snapshots to avoid big allocations
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if (map->size > dbg->maxsnapsize) {
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char *us = r_num_units (NULL, 0, map->size);
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const char *name = r_str_get (map->name);
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eprintf ("Not snapping map %s (%s > dbg.maxsnapsize)\n", name, us);
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free (us);
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return NULL;
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}
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RDebugSnap *snap = R_NEW0 (RDebugSnap);
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if (!snap) {
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return NULL;
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}
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snap->name = strdup (map->name);
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snap->addr = map->addr;
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snap->addr_end = map->addr_end;
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snap->size = map->size;
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snap->perm = map->perm;
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snap->user = map->user;
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snap->shared = map->shared;
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snap->data = malloc (map->size);
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if (!snap->data) {
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r_debug_snap_free (snap);
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return NULL;
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}
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eprintf ("Reading %d byte(s) from 0x%08"PFMT64x "...\n", snap->size, snap->addr);
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dbg->iob.read_at (dbg->iob.io, snap->addr, snap->data, snap->size);
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return snap;
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}
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R_API bool r_debug_snap_contains(RDebugSnap *snap, ut64 addr) {
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return (snap->addr <= addr && addr >= snap->addr_end);
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}
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R_API ut8 *r_debug_snap_get_hash(RDebugSnap *snap) {
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ut64 algobit = r_hash_name_to_bits ("sha256");
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RHash *ctx = r_hash_new (true, algobit);
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if (!ctx) {
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return NULL;
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}
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r_hash_do_begin (ctx, algobit);
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r_hash_calculate (ctx, algobit, snap->data, snap->size);
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r_hash_do_end (ctx, algobit);
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ut8 *ret = malloc (R_HASH_SIZE_SHA256);
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if (!ret) {
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r_hash_free (ctx);
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return NULL;
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}
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memcpy (ret, ctx->digest, R_HASH_SIZE_SHA256);
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r_hash_free (ctx);
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return ret;
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}
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R_API bool r_debug_snap_is_equal(RDebugSnap *a, RDebugSnap *b) {
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bool ret = false;
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ut64 algobit = r_hash_name_to_bits ("sha256");
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RHash *ctx = r_hash_new (true, algobit);
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if (!ctx) {
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return ret;
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}
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r_hash_do_begin (ctx, algobit);
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r_hash_calculate (ctx, algobit, a->data, a->size);
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r_hash_do_end (ctx, algobit);
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ut8 *temp = malloc (R_HASH_SIZE_SHA256);
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if (!temp) {
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r_hash_free (ctx);
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return ret;
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}
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memcpy (temp, ctx->digest, R_HASH_SIZE_SHA256);
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r_hash_do_begin (ctx, algobit);
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r_hash_calculate (ctx, algobit, b->data, b->size);
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r_hash_do_end (ctx, algobit);
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ret = memcmp (temp, ctx->digest, R_HASH_SIZE_SHA256) == 0;
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free (temp);
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r_hash_free (ctx);
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return ret;
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}
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