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Implement 'woi' command to inverse contents of current block ##io

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This commit is contained in:
pancake 2021-09-18 22:16:45 +02:00
parent e6a71ec9ba
commit b4c4c0fe98
2 changed files with 27 additions and 18 deletions
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19
libr/core/cio.c
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@ -141,15 +141,22 @@ R_API ut8* r_core_transform_op(RCore *core, const char *arg, char op) {
int i, j;
ut64 len;
char *str = NULL;
ut8 *buf;
buf = (ut8 *)malloc (core->blocksize);
ut8 *buf = (ut8 *)malloc (core->blocksize);
if (!buf) {
return NULL;
}
if (op == 'i') { // "woi"
int hbs = core->blocksize / 2;
int j = core->blocksize - 1;
for (i = 0; i < hbs; i++, j--) {
buf[i] = core->block[j];
buf[j] = core->block[i];
}
return buf;
}
memcpy (buf, core->block, core->blocksize);
if (op!='e') {
if (op != 'e') {
// fill key buffer either from arg or from clipboard
if (arg) { // parse arg for key
// r_hex_str2bin() is guaranteed to output maximum half the
@ -177,7 +184,7 @@ R_API ut8* r_core_transform_op(RCore *core, const char *arg, char op) {
}
// execute the operand
if (op=='e') {
if (op == 'e') {
int wordsize = 1;
char *os, *p, *s = strdup (arg);
int n = 0, from = 0, to = UT8_MAX, dif = 0, step = 1;
@ -312,7 +319,7 @@ beach:
}
R_API int r_core_write_op(RCore *core, const char *arg, char op) {
ut8 *buf = r_core_transform_op(core, arg, op);
ut8 *buf = r_core_transform_op (core, arg, op);
if (!buf) {
return false;
}

26
libr/core/cmd_write.c
View File

@ -101,6 +101,7 @@ static const char *help_msg_wo[] = {
"woD","[algo] [key] [IV]","decrypt current block with given algo and key",
"woe"," [from to] [step] [wsz=1]",".. create sequence",
"woE"," [algo] [key] [IV]", "encrypt current block with given algo and key",
"woi","", "inverse bytes in current block",
"wol"," [val]","<<= shift left",
"wom"," [val]", "*= multiply",
"woo"," [val]","|= or",
@ -311,27 +312,28 @@ static int wo_handler_old(void *data, const char *input) {
int len;
int value;
switch (input[0]) {
case 'e':
case 'e': // "woe"
if (input[1]!=' ') {
r_cons_printf ("Usage: 'woe from-to step'\n");
return -1;
}
/* fallthru */
case 'a':
case 's':
case 'A':
case 'x':
case 'r':
case 'l':
case 'm':
case 'd':
case 'o':
case 'w':
case 'a': // "woa"
case 's': // "wos"
case 'A': // "woA"
case 'x': // "wox"
case 'r': // "wor"
case 'l': // "wol"
case 'm': // "wom"
case 'i': // "woi"
case 'd': // "wod"
case 'o': // "woo"
case 'w': // "wow"
case '2': // "wo2"
case '4': // "wo4"
case '8': // "wo8"
if (input[1]) { // parse val from arg
r_core_write_op (core, input + 2, input[0]);
r_core_write_op (core, r_str_trim_head_ro (input + 2), input[0]);
} else { // use clipboard instead of val
r_core_write_op (core, NULL, input[0]);
}