int main () {
int ret;
RIODesc *fd;
char buf[1024];
struct r_io_t *io;
io = r_io_new();
r_io_plugin_list(io);
//fd = r_io_open(io, "/bin/ls", R_IO_READ, 0);
fd = r_io_open(io, "dbg:///bin/ls", R_IO_READ, 0);
r_io_set_fd(io, fd);
//r_io_map_add(io, fd, R_IO_READ, 0, 0xf00000, 0xffff);
r_io_map_add(io, fd->fd, R_IO_READ, 0x8048000, 0, 0xffff);
memset(buf, 0, 1024);
//ret = r_io_read_at(io, 0xf00000, buf, 1024);
// ret = r_io_seek(io, 0x8048000, R_IO_SEEK_SET);
// printf("seek = 0x%"PFMT64x"\n", ret);
ret = r_io_read_at (io, 0, (ut8*)buf, 64);
//ret = r_io_read_at(io, 0x8048000, buf, 64);
printf("%d = %02x %02x %02x %02x\n", ret, buf[0], buf[1], buf[2], buf[3]);
r_io_free(io);
return 0;
}
R_API ut64 r_io_desc_size(RIO *io, RIODesc *desc){
RIODesc *old = NULL;
ut64 sz = -1;
if (desc && io->fd != desc){
old = io->fd;
r_io_set_fd(io, desc);
}
if (desc) sz = r_io_size(io);
if(old){
r_io_set_fd(io, old);
}
return sz;
}
R_API int r_core_write_at(RCore *core, ut64 addr, const ut8 *buf, int size) {
int ret;
if (!core->io || !core->file || size<1)
return R_FALSE;
ret = r_io_set_fd (core->io, core->file->fd);
if (ret != -1) {
ret = r_io_write_at (core->io, addr, buf, size);
if (addr >= core->offset && addr <= core->offset+core->blocksize)
r_core_block_read (core, 0);
}
return (ret==-1)? R_FALSE: R_TRUE;
}
R_API int r_core_read_at(RCore *core, ut64 addr, ut8 *buf, int size) {
int ret;
if (!core->io || !core->file || size<1)
return R_FALSE;
#if 0
r_io_set_fd (core->io, core->file->fd); // XXX ignore ret? -- ultra slow method.. inverse resolution of io plugin brbrb
ret = r_io_read_at (core->io, addr, buf, size);
if (addr>=core->offset && addr<=core->offset+core->blocksize)
r_core_block_read (core, 0);
#else
r_io_set_fd (core->io, core->file->fd); // XXX ignore ret? -- ultra slow method.. inverse resolution of io plugin brbrb
//ret = r_io_read_at (core->io, addr, buf, size);
r_io_seek (core->io, addr, R_IO_SEEK_SET);
ret = r_io_read (core->io, buf, size);
if (ret != size) {
if (ret>=size || ret<0) ret = 0;
memset (buf+ret, 0xff, size-ret);
}
if (addr>=core->offset && addr<=core->offset+core->blocksize)
r_core_block_read (core, 0);
#endif
return (ret==size); //UT64_MAX);
}
R_API int r_core_block_read(RCore *core, int next) {
ut64 off;
if (core->file == NULL) {
memset (core->block, 0xff, core->blocksize);
return -1;
}
r_io_set_fd (core->io, core->file->fd);
off = r_io_seek (core->io, core->offset+((next)?core->blocksize:0), R_IO_SEEK_SET);
if (off == UT64_MAX) {
memset (core->block, 0xff, core->blocksize);
return -1;
}
return (int)r_io_read (core->io, core->block, core->blocksize);
}
R_API int r_core_read_at(RCore *core, ut64 addr, ut8 *buf, int size) {
int ret;
if (!core->io || !core->file || size<1)
return R_FALSE;
r_io_set_fd (core->io, core->file->fd); // XXX ignore ret? -- ultra slow method.. inverse resolution of io plugin brbrb
ret = r_io_read_at (core->io, addr, buf, size);
if (ret != size) {
if (ret<size && ret>0)
memset (buf+ret, 0xff, size-ret);
else memset (buf, 0xff, size);
}
if (addr>=core->offset && addr<=core->offset+core->blocksize)
r_core_block_read (core, 0);
return (ret!=UT64_MAX);
}
R_API RIODesc *r_io_open(struct r_io_t *io, const char *file, int flags, int mode) {
RIODesc *desc = NULL;
int fd = -2;
char *uri = strdup (file);
struct r_io_plugin_t *plugin;
if (!io) return NULL;
for (;;) {
plugin = r_io_plugin_resolve (io, uri);
if (plugin && plugin->open) {
desc = plugin->open (io, uri, flags, mode);
if (io->redirect) {
free ((void *)uri);
uri = strdup (io->redirect);
r_io_redirect (io, NULL);
continue;
}
if (desc != NULL) {
r_io_desc_add (io, desc);
fd = desc->fd;
if (fd != -1)
r_io_plugin_open (io, fd, plugin);
if (desc != io->fd)
io->plugin = plugin;
}
}
break;
}
if (fd == -2) {
#if __WINDOWS__
if (flags & R_IO_WRITE) {
fd = open (file, O_BINARY | 1);
if (fd == -1)
creat (file, O_BINARY);
fd = open (file, O_BINARY | 1);
} else fd = open (file, O_BINARY);
#else
fd = open (file, (flags&R_IO_WRITE)?O_RDWR:O_RDONLY, mode);
#endif
}
if (fd >= 0) {
if (desc == NULL)
desc = r_io_desc_new (io->plugin, fd, file, flags, mode, NULL);
r_io_desc_add (io, desc);
r_io_set_fd (io, desc);
}
free ((void *)uri);
return desc;
}
// TODO: remove int fd here???
R_API int r_io_close(RIO *io, RIODesc *fd) {
if (io == NULL || fd == NULL)
return -1;
int nfd = fd->fd;
if (r_io_set_fd (io, fd)) {
RIODesc *desc = r_io_desc_get (io, fd->fd);
if (desc) {
r_io_map_del (io, fd->fd);
r_io_plugin_close (io, fd->fd, io->plugin);
if (io->plugin && io->plugin->close)
return io->plugin->close (desc);
r_io_desc_del (io, desc->fd);
}
}
io->fd = NULL; // unset current fd
return close (nfd);
}
R_API RIODesc *r_io_open(RIO *io, const char *file, int flags, int mode) {
RIODesc *desc = __getioplugin (io, file, flags, mode);
int fd;
if (desc) {
fd = desc->fd;
} else {
fd = __io_posix_open (io, file, flags, mode);
if (fd>=0)
desc = r_io_desc_new (io->plugin,
fd, file, flags, mode, NULL);
}
if (fd >= 0) {
r_io_desc_add (io, desc);
r_io_set_fd (io, desc);
}
return desc;
}
/* TODO: simplify using r_write */
static int cmd_write(void *data, const char *input) {
ut64 off;
ut8 *buf;
const char *arg;
int wseek, i, size, len = strlen (input);
char *tmp, *str, *ostr;
RCore *core = (RCore *)data;
#define WSEEK(x,y) if(wseek)r_core_seek_delta(x,y)
wseek = r_config_get_i (core->config, "cfg.wseek");
str = ostr = strdup (input+1);
switch (*input) {
case 'p':
if (input[1]==' ' && input[2]) {
r_core_patch (core, input+2);
} else {
eprintf ("Usage: wp [rapatch-file]\n"
"TODO: rapatch format documentation here\n");
}
break;
case 'r':
off = r_num_math (core->num, input+1);
len = (int)off;
if (len>0) {
buf = malloc (len);
if (buf != NULL) {
r_num_irand ();
for (i=0; i<len; i++)
buf[i] = r_num_rand (256);
r_core_write_at (core, core->offset, buf, len);
WSEEK (core, len);
free (buf);
} else eprintf ("Cannot allocate %d bytes\n", len);
}
break;
case 'A':
switch (input[1]) {
case ' ':
if (input[2] && input[3]==' ') {
r_asm_set_pc (core->assembler, core->offset);
eprintf ("modify (%c)=%s\n", input[2], input+4);
len = r_asm_modify (core->assembler, core->block, input[2],
r_num_math (core->num, input+4));
eprintf ("len=%d\n", len);
if (len>0) {
r_core_write_at (core, core->offset, core->block, len);
WSEEK (core, len);
} else eprintf ("r_asm_modify = %d\n", len);
} else eprintf ("Usage: wA [type] [value]\n");
break;
case '?':
default:
r_cons_printf ("Usage: wA [type] [value]\n"
"Types:\n"
" r raw write value\n"
" v set value (taking care of current address)\n"
" d destination register\n"
" 0 1st src register\n"
" 1 2nd src register\n"
"Example: wA r 0 # e800000000\n");
break;
}
break;
case 'c':
switch (input[1]) {
case 'i':
r_io_cache_commit (core->io);
r_core_block_read (core, 0);
break;
case 'r':
r_io_cache_reset (core->io, R_TRUE);
/* Before loading the core block we have to make sure that if
* the cache wrote past the original EOF these changes are no
* longer displayed. */
memset (core->block, 0xff, core->blocksize);
r_core_block_read (core, 0);
break;
case '-':
if (input[2]=='*') {
r_io_cache_reset (core->io, R_TRUE);
} else if (input[2]==' ') {
char *p = strchr (input+3, ' ');
ut64 to, from = core->offset;
if (p) {
*p = 0;
from = r_num_math (core->num, input+3);
to = r_num_math (core->num, input+3);
if (to<from) {
eprintf ("Invalid range (from>to)\n");
return 0;
}
} else {
from = r_num_math (core->num, input+3);
to = from + core->blocksize;
}
r_io_cache_invalidate (core->io, from, to);
} else {
eprintf ("Invalidate write cache at 0x%08"PFMT64x"\n", core->offset);
r_io_cache_invalidate (core->io, core->offset, core->offset+core->blocksize);
}
/* See 'r' above. */
memset (core->block, 0xff, core->blocksize);
r_core_block_read (core, 0);
break;
case '?':
r_cons_printf (
"Usage: wc[ir*?]\n"
" wc list all write changes\n"
" wc- [a] [b] remove write op at curseek or given addr\n"
" wc* \"\" in radare commands\n"
" wcr reset all write changes in cache\n"
" wci commit write cache\n"
"NOTE: Requires 'e io.cache=true'\n");
break;
case '*':
r_io_cache_list (core->io, R_TRUE);
break;
case '\0':
r_io_cache_list (core->io, R_FALSE);
break;
}
break;
case ' ':
/* write string */
len = r_str_escape (str);
r_core_write_at (core, core->offset, (const ut8*)str, len);
#if 0
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, (const ut8*)str, len);
#endif
WSEEK (core, len);
r_core_block_read (core, 0);
break;
case 't':
if (*str != ' ') {
eprintf ("Usage: wt file [size]\n");
} else {
tmp = strchr (str+1, ' ');
if (tmp) {
st64 sz = (st64) r_num_math (core->num, tmp+1);
*tmp = 0;
if (sz<1) eprintf ("Invalid length\n");
else r_core_dump (core, str+1, core->offset, (ut64)sz);
} else r_file_dump (str+1, core->block, core->blocksize);
}
break;
case 'T':
eprintf ("TODO: wT // why?\n");
break;
case 'f':
arg = (const char *)(input+((input[1]==' ')?2:1));
if ((buf = (ut8*) r_file_slurp (arg, &size))) {
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, buf, size);
WSEEK (core, size);
free(buf);
r_core_block_read (core, 0);
} else eprintf ("Cannot open file '%s'\n", arg);
break;
case 'F':
arg = (const char *)(input+((input[1]==' ')?2:1));
if ((buf = r_file_slurp_hexpairs (arg, &size))) {
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, buf, size);
WSEEK (core, size);
free (buf);
r_core_block_read (core, 0);
} else eprintf ("Cannot open file '%s'\n", arg);
break;
case 'w':
str++;
len = (len-1)<<1;
if (len>0) tmp = malloc (len+1);
else tmp = NULL;
if (tmp) {
for (i=0; i<len; i++) {
if (i%2) tmp[i] = 0;
else tmp[i] = str[i>>1];
}
str = tmp;
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, (const ut8*)str, len);
WSEEK (core, len);
r_core_block_read (core, 0);
free (tmp);
} else eprintf ("Cannot malloc %d\n", len);
break;
case 'x':
{
int b, len = strlen (input);
ut8 *buf = malloc (len+1);
len = r_hex_str2bin (input+1, buf);
if (len != 0) {
if (len<0) len = -len+1;
b = core->block[len]&0xf;
b |= (buf[len]&0xf0);
buf[len] = b;
r_core_write_at (core, core->offset, buf, len);
WSEEK (core, len);
r_core_block_read (core, 0);
} else eprintf ("Error: invalid hexpair string\n");
free (buf);
}
break;
case 'a':
switch (input[1]) {
case 'o':
if (input[2] == ' ')
r_core_hack (core, input+3);
else r_core_hack_help (core);
break;
case ' ':
case '*':
{ const char *file = input[1]=='*'? input+2: input+1;
RAsmCode *acode;
r_asm_set_pc (core->assembler, core->offset);
acode = r_asm_massemble (core->assembler, file);
if (acode) {
if (input[1]=='*') {
r_cons_printf ("wx %s\n", acode->buf_hex);
} else {
if (r_config_get_i (core->config, "scr.prompt"))
eprintf ("Written %d bytes (%s)=wx %s\n", acode->len, input+1, acode->buf_hex);
r_core_write_at (core, core->offset, acode->buf, acode->len);
WSEEK (core, acode->len);
r_core_block_read (core, 0);
}
r_asm_code_free (acode);
}
}
break;
case 'f':
if ((input[2]==' '||input[2]=='*')) {
const char *file = input[2]=='*'? input+4: input+3;
RAsmCode *acode;
r_asm_set_pc (core->assembler, core->offset);
acode = r_asm_assemble_file (core->assembler, file);
if (acode) {
if (input[2]=='*') {
r_cons_printf ("wx %s\n", acode->buf_hex);
} else {
if (r_config_get_i (core->config, "scr.prompt"))
eprintf ("Written %d bytes (%s)=wx %s\n", acode->len, input+1, acode->buf_hex);
r_core_write_at (core, core->offset, acode->buf, acode->len);
WSEEK (core, acode->len);
r_core_block_read (core, 0);
}
r_asm_code_free (acode);
} else eprintf ("Cannot assemble file\n");
} else eprintf ("Wrong argument\n");
break;
default:
eprintf ("Usage: wa[of*] [arg]\n"
" wa nop : write nopcode using asm.arch and asm.bits\n"
" wa* mov eax, 33 : show 'wx' op with hexpair bytes of sassembled opcode\n"
" \"wa nop;nop\" : assemble more than one instruction (note the quotes)\n"
" waf foo.asm : assemble file and write bytes\n"
" wao nop : convert current opcode into nops\n"
" wao? : show help for assembler operation on current opcode (hack)\n");
break;
}
break;
case 'b':
{
int len = strlen (input);
ut8 *buf = malloc (len+1);
if (buf) {
len = r_hex_str2bin (input+1, buf);
if (len > 0) {
r_mem_copyloop (core->block, buf, core->blocksize, len);
r_core_write_at (core, core->offset, core->block, core->blocksize);
WSEEK (core, core->blocksize);
r_core_block_read (core, 0);
} else eprintf ("Wrong argument\n");
} else eprintf ("Cannot malloc %d\n", len+1);
}
break;
case 'm':
size = r_hex_str2bin (input+1, (ut8*)str);
switch (input[1]) {
case '\0':
eprintf ("Current write mask: TODO\n");
// TODO
break;
case '?':
break;
case '-':
r_io_set_write_mask(core->io, 0, 0);
eprintf ("Write mask disabled\n");
break;
case ' ':
if (size>0) {
r_io_set_fd (core->io, core->file->fd);
r_io_set_write_mask (core->io, (const ut8*)str, size);
WSEEK (core, size);
eprintf ("Write mask set to '");
for (i=0; i<size; i++)
eprintf ("%02x", str[i]);
eprintf ("'\n");
} else eprintf ("Invalid string\n");
break;
}
break;
case 'v':
{
int type = 0;
ut8 addr1;
ut16 addr2;
ut32 addr4, addr4_;
ut64 addr8;
switch (input[1]) {
case '?':
r_cons_printf ("Usage: wv[size] [value] # write value of given size\n"
" wv1 234 # write one byte with this value\n"
" wv 0x834002 # write dword with this value\n"
"Supported sizes are: 1, 2, 4, 8\n");
return 0;
case '1':
type = 1;
break;
case '2':
type = 2;
break;
case '4':
type = 4;
break;
case '8':
type = 8;
break;
}
off = r_num_math (core->num, input+2);
r_io_set_fd (core->io, core->file->fd);
r_io_seek (core->io, core->offset, R_IO_SEEK_SET);
if (type == 0)
type = (off&UT64_32U)? 8: 4;
switch (type) {
case 1:
addr1 = (ut8)off;
r_io_write (core->io, (const ut8 *)&addr1, 1);
WSEEK (core, 1);
break;
case 2:
addr2 = (ut16)off;
r_io_write (core->io, (const ut8 *)&addr2, 2);
WSEEK (core, 2);
break;
case 4:
addr4_ = (ut32)off;
//drop_endian((ut8*)&addr4_, (ut8*)&addr4, 4); /* addr4_ = addr4 */
//endian_memcpy((ut8*)&addr4, (ut8*)&addr4_, 4); /* addr4 = addr4_ */
memcpy ((ut8*)&addr4, (ut8*)&addr4_, 4); // XXX needs endian here too
r_io_write (core->io, (const ut8 *)&addr4, 4);
WSEEK (core, 4);
break;
case 8:
/* 8 byte addr */
memcpy ((ut8*)&addr8, (ut8*)&off, 8); // XXX needs endian here
// endian_memcpy((ut8*)&addr8, (ut8*)&off, 8);
r_io_write (core->io, (const ut8 *)&addr8, 8);
WSEEK (core, 8);
break;
}
r_core_block_read (core, 0);
}
break;
case 'o':
switch (input[1]) {
case 'a':
case 's':
case 'A':
case 'x':
case 'r':
case 'l':
case 'm':
case 'd':
case 'o':
case 'w':
if (input[2]!=' ') {
r_cons_printf ("Usage: 'wo%c 00 11 22'\n", input[1]);
return 0;
}
case '2':
case '4':
r_core_write_op (core, input+3, input[1]);
r_core_block_read (core, 0);
break;
case 'n':
r_core_write_op (core, "ff", 'x');
r_core_block_read (core, 0);
break;
case '\0':
case '?':
default:
r_cons_printf (
"Usage: wo[asmdxoArl24] [hexpairs] @ addr[:bsize]\n"
"Example:\n"
" wox 0x90 ; xor cur block with 0x90\n"
" wox 90 ; xor cur block with 0x90\n"
" wox 0x0203 ; xor cur block with 0203\n"
" woa 02 03 ; add [0203][0203][...] to curblk\n"
"Supported operations:\n"
" wow == write looped value (alias for 'wb')\n"
" woa += addition\n"
" wos -= substraction\n"
" wom *= multiply\n"
" wod /= divide\n"
" wox ^= xor\n"
" woo |= or\n"
" woA &= and\n"
" wor >>= shift right\n"
" wol <<= shift left\n"
" wo2 2= 2 byte endian swap\n"
" wo4 4= 4 byte endian swap\n"
);
break;
}
break;
default:
case '?':
if (core->oobi) {
eprintf ("Writing oobi buffer!\n");
r_io_set_fd (core->io, core->file->fd);
r_io_write (core->io, core->oobi, core->oobi_len);
WSEEK (core, core->oobi_len);
r_core_block_read (core, 0);
} else r_cons_printf (
"Usage: w[x] [str] [<file] [<<EOF] [@addr]\n"
" w foobar write string 'foobar'\n"
" wr 10 write 10 random bytes\n"
" ww foobar write wide string 'f\\x00o\\x00o\\x00b\\x00a\\x00r\\x00'\n"
" wa push ebp write opcode, separated by ';' (use '\"' around the command)\n"
" waf file assemble file and write bytes\n"
" wA r 0 alter/modify opcode at current seek (see wA?)\n"
" wb 010203 fill current block with cyclic hexpairs\n"
" wc[ir*?] write cache commit/reset/list\n"
" wx 9090 write two intel nops\n"
" wv eip+34 write 32-64 bit value\n"
" wo? hex write in block with operation. 'wo?' fmi\n"
" wm f0ff set binary mask hexpair to be used as cyclic write mask\n"
" wf file write contents of file at current offset\n"
" wF file write contents of hexpairs file here\n"
" wt file [sz] write to file (from current seek, blocksize or sz bytes)\n"
" wp file apply radare patch file. See wp? fmi\n");
//TODO: add support for offset+seek
// " wf file o s ; write contents of file from optional offset 'o' and size 's'.\n"
break;
}
/* TODO: simplify using r_write */
static int cmd_write(void *data, const char *input) {
ut64 off;
ut8 *buf;
const char *arg;
int wseek, i, size, len = strlen (input);
char *tmp, *str, *ostr;
RCore *core = (RCore *)data;
#define WSEEK(x,y) if (wseek)r_core_seek_delta (x,y)
wseek = r_config_get_i (core->config, "cfg.wseek");
str = ostr = strdup (input+1);
switch (*input) {
case 'h':
{
char *p = strchr (input, ' ');
if (p) {
while (*p==' ') p++;
p = r_file_path (p);
if (p) {
r_cons_printf ("%s\n", p);
free (p);
}
}
}
break;
case 'e':
{
ut64 addr = 0, len = 0, b_size = 0;
st64 dist = 0;
ut8* bytes = NULL;
int cmd_suc = R_FALSE;
char *input_shadow = NULL, *p = NULL;
switch (input[1]) {
case 'n':
if (input[2] == ' ') {
len = *input ? r_num_math (core->num, input+3) : 0;
if (len > 0){
ut64 cur_off = core->offset;
cmd_suc = r_core_extend_at (core, core->offset, len);
core->offset = cur_off;
r_core_block_read (core, 0);
}
}
break;
case 'N':
if (input[2] == ' ') {
input += 3;
while (*input && *input == ' ') input++;
addr = r_num_math (core->num, input);
while (*input && *input != ' ') input++;
input++;
len = *input ? r_num_math (core->num, input) : 0;
if (len > 0){
ut64 cur_off = core->offset;
cmd_suc = r_core_extend_at (core, addr, len);
cmd_suc = r_core_seek (core, cur_off, 1);
core->offset = addr;
r_core_block_read (core, 0);
}
}
break;
case 'x':
if (input[2] == ' ') {
input+=2;
len = *input ? strlen (input) : 0;
bytes = len > 1? malloc (len+1) : NULL;
len = bytes ? r_hex_str2bin (input, bytes) : 0;
if (len > 0) {
ut64 cur_off = core->offset;
cmd_suc = r_core_extend_at (core, cur_off, len);
if (cmd_suc) {
r_core_write_at (core, cur_off, bytes, len);
}
core->offset = cur_off;
r_core_block_read (core, 0);
}
free (bytes);
}
break;
case 'X':
if (input[2] == ' ') {
addr = r_num_math (core->num, input+3);
input += 3;
while (*input && *input != ' ') input++;
input++;
len = *input ? strlen (input) : 0;
bytes = len > 1? malloc (len+1) : NULL;
len = bytes ? r_hex_str2bin (input, bytes) : 0;
if (len > 0) {
//ut64 cur_off = core->offset;
cmd_suc = r_core_extend_at (core, addr, len);
if (cmd_suc) {
r_core_write_at (core, addr, bytes, len);
}
core->offset = addr;
r_core_block_read (core, 0);
}
free (bytes);
}
break;
case 's':
input += 3;
while (*input && *input == ' ') input++;
len = strlen (input);
input_shadow = len > 0? malloc (len+1): 0;
// since the distance can be negative,
// the r_num_math will perform an unwanted operation
// the solution is to tokenize the string :/
if (input_shadow) {
strncpy (input_shadow, input, len+1);
p = strtok (input_shadow, " ");
addr = p && *p ? r_num_math (core->num, p) : 0;
p = strtok (NULL, " ");
dist = p && *p ? r_num_math (core->num, p) : 0;
p = strtok (NULL, " ");
b_size = p && *p ? r_num_math (core->num, p) : 0;
if (dist != 0){
r_core_shift_block (core, addr, b_size, dist);
r_core_seek (core, addr, 1);
cmd_suc = R_TRUE;
}
}
free (input_shadow);
break;
case '?':
default:
cmd_suc = R_FALSE;
}
if (cmd_suc == R_FALSE) {
r_cons_printf ("|Usage: write extend\n"
"wen <num> insert num null bytes at current offset\n"
"wex <hex_bytes> insert bytes at current offset\n"
"weN <addr> <len> insert bytes at address\n"
"weX <addr> <hex_bytes> insert bytes at address\n"
"wes <addr> <dist> <block_size> shift a blocksize left or write in the editor\n"
);
}
}
break;
case 'p':
if (input[1]=='-' || (input[1]==' '&&input[2]=='-')) {
const char *tmpfile = ".tmp";
char *out = r_core_editor (core, NULL);
if (out) {
// XXX hacky .. patch should support str, not only file
r_file_dump (tmpfile, (ut8*)out, strlen (out));
r_core_patch (core, tmpfile);
r_file_rm (tmpfile);
free (out);
}
} else {
if (input[1]==' ' && input[2]) {
r_core_patch (core, input+2);
} else {
eprintf ("Usage: wp [-|r2patch-file]\n"
"TODO: rapatch format documentation here\n");
}
}
break;
case 'u':
// TODO: implement it in an API RCore.write_unified_hexpatch() is ETOOLONG
if (input[1]==' ') {
char *data = r_file_slurp (input+2, NULL);
if (data) {
char sign = ' ';
int line = 0, offs = 0, hexa = 0;
int newline = 1;
for (i=0; data[i]; i++) {
switch (data[i]) {
case '+':
if (newline)
sign = 1;
break;
case '-':
if (newline) {
sign = 0;
offs = i + ((data[i+1]==' ')?2:1);
}
break;
case ' ':
data[i] = 0;
if (sign) {
if (!line) line = i+1;
else
if (!hexa) hexa = i+1;
}
break;
case '\r':
break;
case '\n':
newline = 1;
if (sign == -1) {
offs = 0;
line = 0;
hexa = 0;
} else if (sign) {
if (offs && hexa) {
r_cons_printf ("wx %s @ %s\n", data+hexa, data+offs);
} else eprintf ("food\n");
offs = 0;
line = 0;
} else hexa = 0;
sign = -1;
continue;
}
newline = 0;
}
free (data);
}
} else {
eprintf ("|Usage: wu [unified-diff-patch] # see 'cu'\n");
}
break;
case 'r':
off = r_num_math (core->num, input+1);
len = (int)off;
if (len>0) {
buf = malloc (len);
if (buf != NULL) {
r_num_irand ();
for (i=0; i<len; i++)
buf[i] = r_num_rand (256);
r_core_write_at (core, core->offset, buf, len);
WSEEK (core, len);
free (buf);
} else eprintf ("Cannot allocate %d bytes\n", len);
}
break;
case 'A':
switch (input[1]) {
case ' ':
if (input[2] && input[3]==' ') {
r_asm_set_pc (core->assembler, core->offset);
eprintf ("modify (%c)=%s\n", input[2], input+4);
len = r_asm_modify (core->assembler, core->block, input[2],
r_num_math (core->num, input+4));
eprintf ("len=%d\n", len);
if (len>0) {
r_core_write_at (core, core->offset, core->block, len);
WSEEK (core, len);
} else eprintf ("r_asm_modify = %d\n", len);
} else eprintf ("Usage: wA [type] [value]\n");
break;
case '?':
default:
r_cons_printf ("|Usage: wA [type] [value]\n"
"|Types:\n"
"| r raw write value\n"
"| v set value (taking care of current address)\n"
"| d destination register\n"
"| 0 1st src register\n"
"| 1 2nd src register\n"
"|Example: wA r 0 # e800000000\n");
break;
}
break;
case 'c':
switch (input[1]) {
case 'i':
r_io_cache_commit (core->io);
r_core_block_read (core, 0);
break;
case 'r':
r_io_cache_reset (core->io, R_TRUE);
/* Before loading the core block we have to make sure that if
* the cache wrote past the original EOF these changes are no
* longer displayed. */
memset (core->block, 0xff, core->blocksize);
r_core_block_read (core, 0);
break;
case '-':
if (input[2]=='*') {
r_io_cache_reset (core->io, R_TRUE);
} else if (input[2]==' ') {
char *p = strchr (input+3, ' ');
ut64 to, from = core->offset;
if (p) {
*p = 0;
from = r_num_math (core->num, input+3);
to = r_num_math (core->num, input+3);
if (to<from) {
eprintf ("Invalid range (from>to)\n");
return 0;
}
} else {
from = r_num_math (core->num, input+3);
to = from + core->blocksize;
}
r_io_cache_invalidate (core->io, from, to);
} else {
eprintf ("Invalidate write cache at 0x%08"PFMT64x"\n", core->offset);
r_io_cache_invalidate (core->io, core->offset, core->offset+core->blocksize);
}
/* See 'r' above. */
memset (core->block, 0xff, core->blocksize);
r_core_block_read (core, 0);
break;
case '?':
r_cons_printf (
"|Usage: wc[ir*?]\n"
"| wc list all write changes\n"
"| wc- [a] [b] remove write op at curseek or given addr\n"
"| wc* \"\" in radare commands\n"
"| wcr reset all write changes in cache\n"
"| wci commit write cache\n"
"|NOTE: Requires 'e io.cache=true'\n");
break;
case '*':
r_io_cache_list (core->io, R_TRUE);
break;
case '\0':
if (!r_config_get_i (core->config, "io.cache"))
eprintf ("[warning] e io.cache must be true\n");
r_io_cache_list (core->io, R_FALSE);
break;
}
break;
case ' ':
/* write string */
len = r_str_unescape (str);
r_core_write_at (core, core->offset, (const ut8*)str, len);
#if 0
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, (const ut8*)str, len);
#endif
WSEEK (core, len);
r_core_block_read (core, 0);
break;
case 't':
if (*str != ' ') {
eprintf ("Usage: wt file [size]\n");
} else {
tmp = strchr (str+1, ' ');
if (tmp) {
st64 sz = (st64) r_num_math (core->num, tmp+1);
*tmp = 0;
if (sz<1) eprintf ("Invalid length\n");
else r_core_dump (core, str+1, core->offset, (ut64)sz);
} else r_file_dump (str+1, core->block, core->blocksize);
}
break;
case 'T':
eprintf ("TODO: wT // why?\n");
break;
case 'f':
arg = (const char *)(input+((input[1]==' ')?2:1));
if (!strcmp (arg, "-")) {
char *out = r_core_editor (core, NULL);
if (out) {
r_io_write_at (core->io, core->offset,
(ut8*)out, strlen (out));
free (out);
}
} else
if ((buf = (ut8*) r_file_slurp (arg, &size))) {
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, buf, size);
WSEEK (core, size);
free (buf);
r_core_block_read (core, 0);
} else eprintf ("Cannot open file '%s'\n", arg);
break;
case 'F':
arg = (const char *)(input+((input[1]==' ')?2:1));
if (!strcmp (arg, "-")) {
int len;
ut8 *out;
char *in = r_core_editor (core, NULL);
if (in) {
out = (ut8 *)strdup (in);
if (out) {
len = r_hex_str2bin (in, out);
if (len>0)
r_io_write_at (core->io, core->offset, out, len);
free (out);
}
free (in);
}
} else
if ((buf = r_file_slurp_hexpairs (arg, &size))) {
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, buf, size);
WSEEK (core, size);
free (buf);
r_core_block_read (core, 0);
} else eprintf ("Cannot open file '%s'\n", arg);
break;
case 'w':
str++;
len = (len-1)<<1;
if (len>0) tmp = malloc (len+1);
else tmp = NULL;
if (tmp) {
for (i=0; i<len; i++) {
if (i%2) tmp[i] = 0;
else tmp[i] = str[i>>1];
}
str = tmp;
r_io_set_fd (core->io, core->file->fd);
r_io_write_at (core->io, core->offset, (const ut8*)str, len);
WSEEK (core, len);
r_core_block_read (core, 0);
free (tmp);
} else eprintf ("Cannot malloc %d\n", len);
break;
case 'x':
{
int b, len = strlen (input);
ut8 *buf = malloc (len+1);
len = r_hex_str2bin (input+1, buf);
if (len != 0) {
if (len<0) len = -len+1;
if (len<core->blocksize) {
b = core->block[len]&0xf;
b |= (buf[len]&0xf0);
} else b = buf[len];
buf[len] = b;
r_core_write_at (core, core->offset, buf, len);
WSEEK (core, len);
r_core_block_read (core, 0);
} else eprintf ("Error: invalid hexpair string\n");
free (buf);
}
break;
case 'a':
switch (input[1]) {
case 'o':
if (input[2] == ' ')
r_core_hack (core, input+3);
else r_core_hack_help (core);
break;
case ' ':
case '*':
{ const char *file = input[1]=='*'? input+2: input+1;
RAsmCode *acode;
r_asm_set_pc (core->assembler, core->offset);
acode = r_asm_massemble (core->assembler, file);
if (acode) {
if (input[1]=='*') {
r_cons_printf ("wx %s\n", acode->buf_hex);
} else {
if (r_config_get_i (core->config, "scr.prompt"))
eprintf ("Written %d bytes (%s) = wx %s\n", acode->len, input+2, acode->buf_hex);
r_core_write_at (core, core->offset, acode->buf, acode->len);
WSEEK (core, acode->len);
r_core_block_read (core, 0);
}
r_asm_code_free (acode);
}
} break;
case 'f':
if ((input[2]==' '||input[2]=='*')) {
const char *file = input[2]=='*'? input+4: input+3;
RAsmCode *acode;
r_asm_set_pc (core->assembler, core->offset);
acode = r_asm_assemble_file (core->assembler, file);
if (acode) {
if (input[2]=='*') {
r_cons_printf ("wx %s\n", acode->buf_hex);
} else {
if (r_config_get_i (core->config, "scr.prompt"))
eprintf ("Written %d bytes (%s)=wx %s\n", acode->len, input+1, acode->buf_hex);
r_core_write_at (core, core->offset, acode->buf, acode->len);
WSEEK (core, acode->len);
r_core_block_read (core, 0);
}
r_asm_code_free (acode);
} else eprintf ("Cannot assemble file\n");
} else eprintf ("Wrong argument\n");
break;
default:
r_cons_printf ("|Usage: wa[of*] [arg]\n"
"| wa nop : write nopcode using asm.arch and asm.bits\n"
"| wa* mov eax, 33 : show 'wx' op with hexpair bytes of sassembled opcode\n"
"| \"wa nop;nop\" : assemble more than one instruction (note the quotes)\n"
"| waf foo.asm : assemble file and write bytes\n"
"| wao nop : convert current opcode into nops\n"
"| wao? : show help for assembler operation on current opcode (hack)\n");
break;
}
break;
case 'b':
{
int len = strlen (input);
ut8 *buf = malloc (len+1);
if (buf) {
len = r_hex_str2bin (input+1, buf);
if (len > 0) {
r_mem_copyloop (core->block, buf, core->blocksize, len);
r_core_write_at (core, core->offset, core->block, core->blocksize);
WSEEK (core, core->blocksize);
r_core_block_read (core, 0);
} else eprintf ("Wrong argument\n");
free (buf);
} else eprintf ("Cannot malloc %d\n", len+1);
}
break;
case 'm':
size = r_hex_str2bin (input+1, (ut8*)str);
switch (input[1]) {
case '\0':
eprintf ("Current write mask: TODO\n");
// TODO
break;
case '?':
break;
case '-':
r_io_set_write_mask (core->io, 0, 0);
eprintf ("Write mask disabled\n");
break;
case ' ':
if (size>0) {
r_io_set_fd (core->io, core->file->fd);
r_io_set_write_mask (core->io, (const ut8*)str, size);
WSEEK (core, size);
eprintf ("Write mask set to '");
for (i=0; i<size; i++)
eprintf ("%02x", str[i]);
eprintf ("'\n");
} else eprintf ("Invalid string\n");
break;
}
break;
case 'v':
{
int type = 0;
ut8 addr1;
ut16 addr2;
ut32 addr4, addr4_;
ut64 addr8;
switch (input[1]) {
case '?':
r_cons_printf ("|Usage: wv[size] [value] # write value of given size\n"
"| wv1 234 # write one byte with this value\n"
"| wv 0x834002 # write dword with this value\n"
"|Supported sizes are: 1, 2, 4, 8\n");
return 0;
case '1': type = 1; break;
case '2': type = 2; break;
case '4': type = 4; break;
case '8': type = 8; break;
}
off = r_num_math (core->num, input+2);
r_io_set_fd (core->io, core->file->fd);
r_io_seek (core->io, core->offset, R_IO_SEEK_SET);
if (type == 0)
type = (off&UT64_32U)? 8: 4;
switch (type) {
case 1:
addr1 = (ut8)off;
r_io_write (core->io, (const ut8 *)&addr1, 1);
WSEEK (core, 1);
break;
case 2:
addr2 = (ut16)off;
r_io_write (core->io, (const ut8 *)&addr2, 2);
WSEEK (core, 2);
break;
case 4:
addr4_ = (ut32)off;
//drop_endian((ut8*)&addr4_, (ut8*)&addr4, 4); /* addr4_ = addr4 */
//endian_memcpy((ut8*)&addr4, (ut8*)&addr4_, 4); /* addr4 = addr4_ */
memcpy ((ut8*)&addr4, (ut8*)&addr4_, 4); // XXX needs endian here too
r_io_write (core->io, (const ut8 *)&addr4, 4);
WSEEK (core, 4);
break;
case 8:
/* 8 byte addr */
memcpy ((ut8*)&addr8, (ut8*)&off, 8); // XXX needs endian here
// endian_memcpy((ut8*)&addr8, (ut8*)&off, 8);
r_io_write (core->io, (const ut8 *)&addr8, 8);
WSEEK (core, 8);
break;
}
r_core_block_read (core, 0);
}
break;
case 'o':
switch (input[1]) {
case 'a':
case 's':
case 'e':
case 'A':
case 'x':
case 'r':
case 'l':
case 'm':
case 'd':
case 'o':
case 'w':
if (input[2]!=' ') {
if (input[1]=='e') r_cons_printf (
"Usage: 'woe from-to step'\n");
else r_cons_printf (
"Usage: 'wo%c 00 11 22'\n", input[1]);
free (ostr);
return 0;
}
case '2':
case '4':
r_core_write_op (core, input+3, input[1]);
r_core_block_read (core, 0);
break;
case 'R':
r_core_cmd0 (core, "wr $b");
break;
case 'n':
r_core_write_op (core, "ff", 'x');
r_core_block_read (core, 0);
break;
case '\0':
case '?':
default:
r_cons_printf (
"|Usage: wo[asmdxoArl24] [hexpairs] @ addr[:bsize]\n"
"|Example:\n"
"| wox 0x90 ; xor cur block with 0x90\n"
"| wox 90 ; xor cur block with 0x90\n"
"| wox 0x0203 ; xor cur block with 0203\n"
"| woa 02 03 ; add [0203][0203][...] to curblk\n"
"| woe 02 03 \n"
"|Supported operations:\n"
"| wow == write looped value (alias for 'wb')\n"
"| woa += addition\n"
"| wos -= substraction\n"
"| wom *= multiply\n"
"| wod /= divide\n"
"| wox ^= xor\n"
"| woo |= or\n"
"| woA &= and\n"
"| woR random bytes (alias for 'wr $b'\n"
"| wor >>= shift right\n"
"| wol <<= shift left\n"
"| wo2 2= 2 byte endian swap\n"
"| wo4 4= 4 byte endian swap\n"
);
break;
}
break;
case 's':
{
ut8 ulen;
len = r_str_unescape (str+1);
if (len>255) {
eprintf ("Too large\n");
} else {
ulen = (ut8)len;
r_core_write_at (core, core->offset, &ulen, 1);
r_core_write_at (core, core->offset+1, (const ut8*)str+1, len);
WSEEK (core, len);
r_core_block_read (core, 0);
}
}
break;
default:
case '?':
if (core->oobi) {
eprintf ("Writing oobi buffer!\n");
r_io_set_fd (core->io, core->file->fd);
r_io_write (core->io, core->oobi, core->oobi_len);
WSEEK (core, core->oobi_len);
r_core_block_read (core, 0);
} else r_cons_printf (
"|Usage: w[x] [str] [<file] [<<EOF] [@addr]\n"
"| w foobar write string 'foobar'\n"
"| wh r2 whereis/which shell command\n"
"| wr 10 write 10 random bytes\n"
"| ww foobar write wide string 'f\\x00o\\x00o\\x00b\\x00a\\x00r\\x00'\n"
"| wa push ebp write opcode, separated by ';' (use '\"' around the command)\n"
"| waf file assemble file and write bytes\n"
"| wA r 0 alter/modify opcode at current seek (see wA?)\n"
"| wb 010203 fill current block with cyclic hexpairs\n"
"| wc[ir*?] write cache undo/commit/reset/list (io.cache)\n"
"| wx 9090 write two intel nops\n"
"| wv eip+34 write 32-64 bit value\n"
"| wo? hex write in block with operation. 'wo?' fmi\n"
"| wm f0ff set binary mask hexpair to be used as cyclic write mask\n"
"| ws pstring write 1 byte for length and then the string\n"
"| wf -|file write contents of file at current offset\n"
"| wF -|file write contents of hexpairs file here\n"
"| wp -|file apply radare patch file. See wp? fmi\n"
"| wt file [sz] write to file (from current seek, blocksize or sz bytes)\n"
);
//TODO: add support for offset+seek
// " wf file o s ; write contents of file from optional offset 'o' and size 's'.\n"
break;
}