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Parse the mach0's requirements codesign slot ##bin

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pancake 2018-10-24 12:03:21 +02:00 committed by radare
parent 4d4ce2f49c
commit c3092614ba
1 changed files with 25 additions and 41 deletions
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66
libr/bin/format/mach0/mach0.c
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@ -791,50 +791,35 @@ static bool parse_signature(struct MACH0_(obj_t) *bin, ut64 off) {
(int)data + idx.offset + 8, (int)length);
eprintf ("pFp@%d!%d\n",
(int)data + idx.offset + 8, (int)length);
#if 0
int fd = open ("DUMP", O_RDWR|O_CREAT, 0644);
if (fd != -1) {
eprintf ("See DUMP file.\n");
write (fd, words, length);
close (fd);
}
#endif
free (p);
}
}
break;
case CSSLOT_REQUIREMENTS:
#if 0
// eprintf ("[TODO] CSSLOT_REQUIREMENTS\n");
case CSSLOT_REQUIREMENTS: // 2
{
ut8 p[5000];
r_buf_read_at (bin->b, data + idx.offset + 0, p, sizeof (p));
ut32 count = r_read_ble32 (p, 1);
int i = 0;
ut32 *words = (ut32*)p;
// $ openssl asn1parse -inform der -in x
int fd = open ("DUMP", O_RDWR|O_CREAT, 0644);
if (fd != -1) {
write (fd, words, sizeof(p));
close (fd);
ut8 p[256];
r_buf_read_at (bin->b, data + idx.offset + 16, p, sizeof (p));
p[sizeof (p) - 1] = 0;
ut32 slot_size = r_read_ble32 (p + 8, 1);
eprintf ("slot size %d\n", slot_size);
if (slot_size < sizeof (p)) {
ut32 ident_size = r_read_ble32 (p + 8, 1);
char *ident = r_str_ndup ((const char *)p + 28, ident_size);
if (ident) {
sdb_set (bin->kv, "mach0.ident", ident, 0);
free (ident);
}
} else {
eprintf ("Invalid code slot size\n");
}
#if 0
for (i = 0; i < count; i++) {
int n = i * 3;
eprintf ("Type (0x%08x) Offset (0x%08x) Expression (0x%08x)\n",
words[n], words[n+1], words[n+2]);
}
#endif
}
#endif
break;
#if 0
case CSSLOT_INFOSLOT: // 1;
case CSSLOT_RESOURCEDIR: // 3;
case CSSLOT_APPLICATION: // 4;
// TODO
// TODO: parse those codesign slots
eprintf ("TODO: Some codesign slots are not yet supported\n");
break;
#endif
default:
eprintf ("Unknown Code signature slot %d\n", idx.type);
break;
@ -1768,17 +1753,12 @@ static int inSymtab(SdbHt *hash, const char *name, ut64 addr) {
}
static char *get_name(struct MACH0_(obj_t)* mo, ut32 stridx, bool filter) {
const char *symstr;
int i = 0;
if (stridx > mo->symstrlen) {
if (stridx >= mo->symstrlen) {
return NULL;
}
int len = mo->symstrlen - stridx;
if (stridx >= 0 && stridx < mo->symstrlen) {
symstr = (char*)mo->symstr + stridx;
} else {
symstr = "???";
}
const char *symstr = (const char*)mo->symstr + stridx;
for (i = 0; i < len; i++) {
if ((ut8)(symstr[i] & 0xff) == 0xff || !symstr[i]) {
len = i;
@ -1786,7 +1766,7 @@ static char *get_name(struct MACH0_(obj_t)* mo, ut32 stridx, bool filter) {
}
}
if (len > 0) {
char * res = r_str_ndup (symstr, len);
char *res = r_str_ndup (symstr, len);
if (filter) {
r_str_filter (res, -1);
}
@ -1816,6 +1796,10 @@ struct symbol_t* MACH0_(get_symbols)(struct MACH0_(obj_t)* bin) {
return NULL;
}
SdbHt *hash = sdb_ht_new ();
if (!hash) {
free (symbols);
return NULL;
}
j = 0; // symbol_idx
for (s = 0; s < 2; s++) {
switch (s) {
@ -1881,7 +1865,7 @@ struct symbol_t* MACH0_(get_symbols)(struct MACH0_(obj_t)* bin) {
bprintf ("mach0-get-symbols: error\n");
break;
}
if (parse_import_stub(bin, &symbols[j], i)) {
if (parse_import_stub (bin, &symbols[j], i)) {
symbols[j++].last = 0;
}
}