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cmd.c
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cmd.c
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/*
Copyright 2009-2022 Luigi Auriemma
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
http://www.gnu.org/licenses/gpl-2.0.txt
*/
// QuickBMS CMD operations
void bms_init(int reinit);
void quickbms_set_reimport_var(void);
void init_crc_get(crc_context *ctx, u8 *key, u8 *ivec) {
if(key && key[0]) ctx->poly = myatoi(key);
if(ivec) {
int x1=ctx->init,x2=ctx->final;
get_parameter_numbers(ivec,
&ctx->bits, &x1, &x2, &ctx->type, &ctx->rever, &ctx->bitmask_side, NULL);
ctx->init=x1; ctx->final=x2;
}
}
crc_context *init_crc(u8 *type, u8 *key, u8 *ivec) {
crc_context *ctx = NULL;
ctx = calloc(1, sizeof(crc_context));
if(!ctx) STD_ERR(QUICKBMS_ERROR_MEMORY);
ctx->poly = 0xedb88320; // it's the one where the second element is 0x77073096
ctx->bits = 32;
ctx->init = -1;
ctx->final = -1;
ctx->type = 0;
ctx->rever = 0;
ctx->bitmask_side = 1;
init_crc_get(ctx, key, ivec);
if(!type) type = "";
if(!strnicmp(type, "crc", 3)) type += 3;
// if you specify no polynomial (no key), quickbms will get the default parameters
if(
(!key || !key[0]) // useless, in case of key "" and size 16
&& (!ivec || !ivec[0])
) {
if(!strcmp(type, "8") || (ctx->bits == 8)) {
ctx->poly = 0;
ctx->bits = 8;
ctx->init = 0;
ctx->final = 0;
ctx->type = 5;
ctx->rever = 0;
ctx->bitmask_side = 0;
} else if(!strcmp(type, "16") || (ctx->bits == 16)) {
ctx->poly = 0xa001; // second value equal to 0xc0c1
ctx->bits = 16;
ctx->init = 0;
ctx->final = 0;
ctx->type = 0;
ctx->rever = 0;
ctx->bitmask_side = 1;
} else if(!strcmp(type, "64") || (ctx->bits == 64)) {
ctx->poly = 0xad93d23594c935a9LL; // second value 0x7ad870c830358979
ctx->bits = 64;
ctx->init = 0;
ctx->final = 0;
ctx->type = 0;
ctx->rever = 1;
ctx->bitmask_side = 0;
} else if(!strcmp(type, "djb2")) {
ctx->init = 5381;
ctx->type = 15;
} else if(!strcmp(type, "sdbm")) {
ctx->init = 65599;
ctx->type = 16;
}
}
crc_make_table((void *)ctx->table, NULL, ctx->poly, ctx->bits, g_endian, ctx->rever, ctx->bitmask_side, NULL);
if(g_verbose) {
int i,
len = 0;
static u8 tmp[((NUMBERSZ + 5) * 256) + 10 + 1]; // len is already zero
len += sprintf(tmp + len, "{");
for(i = 0; i < 256; i++) {
if(i && !(i % 8)) len += sprintf(tmp + len, "\n");
len += sprintf(tmp + len, g_decimal_notation ? "%"PRIu64"," : "0x%"PRIx64",", ctx->table[i]);
}
tmp[--len] = 0; // remove last comma
len += sprintf(tmp + len, "}\n");
add_var(0, "QUICKBMS_CRC_TABLE", tmp, 0, len);
}
return ctx;
}
int old_set_math_operator(u8 **data);
int check_condition_strcmp(u8 *var1, int len1, u8 *var2, int len2, int sign) {
if(!var1 || !var2) return 0; // like check_strcmp_args
if(!var1) return -1;
if(!var2) return 1;
if((len1 < 0) || (len2 < 0)) {
if(sign) {
return strcmp (var1, var2);
} else {
return stricmp(var1, var2);
}
} else {
if(len1 < len2) return -1;
if(len1 > len2) return 1;
if(sign) {
return memcmp (var1, var2, len2);
} else {
return memicmp(var1, var2, len2);
}
}
return 0;
}
int check_condition(int cmd, int res1, u8 *xcond, int res2) {
int var1n,
var2n,
res,
sign,
idx,
ifs,
i,
res_db[MAX_IFS + 1] = {0},
binary,
len1, // only for binary
len2; // only for binary
u8 *cond,
*var1,
*var2,
*s1,
*s2,
*p1,
*p2,
*p,
*cond_db[MAX_IFS + 1] = {NULL};
if(cmd >= 0) {
if((CMD.var[0] < 0) || (CMD.var[2] < 0)) return(TRUE); // needed for CMD_Else!
}
for(i = 0; i < MAX_IFS; i++) {
res_db[i] = 0;
cond_db[i] = NULL;
}
idx = 0;
for(ifs = 0; ifs < MAX_IFS; ifs++) {
sign = 0;
binary = 0;
var1n = 0;
var2n = 0;
var1 = NULL;
var2 = NULL;
len1 = -1;
len2 = -1;
res = FALSE;
if(cmd < 0) {
var1n = res1;
cond = xcond;
var2n = res2;
} else {
cond = STR(idx + 1);
}
// replacing strcmp with a switch changes nothing in performance
if(!cond) return(res);
if(cond[0] == 'u') { // only the first and only 'u' to avoid loss of performances
sign = 1;
cond++;
}
if(cond[0] == '0') { // like error_mode in String
binary = 1;
cond++;
}
if(cmd >= 0) {
if(VARISNUM(idx + 0) && VARISNUM(idx + 2)) {
var1n = VAR32(idx + 0);
var2n = VAR32(idx + 2);
} else {
var1 = VAR(idx + 0);
var2 = VAR(idx + 2);
}
if(!var1 || !var2) { // not sure if it may happen
var1n = VAR32(idx + 0);
var2n = VAR32(idx + 2);
} else {
if(binary) {
len1 = VARSZF(idx + 0);
len2 = VARSZF(idx + 2);
}
/* keep it disabled for compatibility with old versions because strncmp != memcmp!
else {
len1 = VARSZ (idx + 0);
len2 = VARSZ (idx + 2);
} */
if(binary) {
// do nothing, force it
} else {
if(var_is_a_constant_string(CMD.var[idx + 0]) || var_is_a_constant_string(CMD.var[idx + 2])) {
// do nothing because they are strings
} else if(myisdechex_string(var1) && myisdechex_string(var2)) {
var1 = NULL;
var2 = NULL;
var1n = VAR32(idx + 0);
var2n = VAR32(idx + 2);
}
// in the For command I use a Set instruction at the beginning of the cycle with a String type
// now the downside is that it's a bit slower but being used only at the beginning of the cycle there is no
// loss of time (some milliseconds on tons of For cycles) and there is the pro of using also things like:
// for i = "hello" != "ciao"
}
}
idx += 3;
}
if(!strcmp(cond, "<") || !stricmp(cond, "minor") || !stricmp(cond, "lower") || !stricmp(cond, "below")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) < 0) res = TRUE;
} else {
if(sign) {
if((u_int)var1n < (u_int)var2n) res = TRUE;
} else {
if(var1n < var2n) res = TRUE;
}
}
} else if(!strcmp(cond, ">") || !stricmp(cond, "major") || !stricmp(cond, "greater") || !stricmp(cond, "above")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) > 0) res = TRUE;
} else {
if(sign) {
if((u_int)var1n > (u_int)var2n) res = TRUE;
} else {
if(var1n > var2n) res = TRUE;
}
}
} else if(!strcmp(cond, "<>") || !strcmp(cond, "!=") || !strcmp(cond, "!==") || !stricmp(cond, "different")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) != 0) res = TRUE;
} else {
if(var1n != var2n) res = TRUE;
}
} else if(!strcmp(cond, "=") || !strcmp(cond, "==") || !strcmp(cond, "===") || !stricmp(cond, "equal") || !stricmp(cond, "strcmp") || !stricmp(cond, "stricmp") || !stricmp(cond, "strcasecmp")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) == 0) res = TRUE;
} else {
if(var1n == var2n) res = TRUE;
}
} else if(!strcmp(cond, ">=")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) >= 0) res = TRUE;
} else {
if(sign) {
if((u_int)var1n >= (u_int)var2n) res = TRUE;
} else {
if(var1n >= var2n) res = TRUE;
}
}
} else if(!strcmp(cond, "<=")) {
if(var1 && var2) {
if(check_condition_strcmp(var1, len1, var2, len2, sign) <= 0) res = TRUE;
} else {
if(sign) {
if((u_int)var1n <= (u_int)var2n) res = TRUE;
} else {
if(var1n <= var2n) res = TRUE;
}
}
// added by me
} else if(!strcmp(cond, "&") || !strcmp(cond, "&&") || !stricmp(cond, "and") || !stricmp(cond, "strstr") || !stricmp(cond, "stristr") || !stricmp(cond, "strcasestr")) {
if(var1 && var2) {
if(binary) {
if(sign) {
if(mymemmem (var1, var2, len1, len2)) res = TRUE;
} else {
if(mymemimem(var1, var2, len1, len2)) res = TRUE;
}
} else {
if(sign) {
if(strstr (var1, var2)) res = TRUE;
} else {
if(stristr(var1, var2)) res = TRUE;
}
}
} else {
if(var1n & var2n) res = TRUE;
}
} else if(!strcmp(cond, "^") || !strcmp(cond, "^^") || !stricmp(cond, "xor")) {
if(var1 && var2) {
// nothing to check, string ^ string is zeroes if the same
if(!check_condition_strcmp(var1, len1, var2, len2, sign)) res = TRUE;
} else {
if(var1n ^ var2n) res = TRUE;
}
} else if(!strcmp(cond, "|") || !strcmp(cond, "||") || !stricmp(cond, "or")) {
if(var1 && var2) {
if(binary) {
if((len1 > 0) || (len2 > 0)) res = TRUE; // new
} else {
if(var1[0] || var2[0]) res = TRUE; // new
}
} else if(var1 || var2) { // new
res = TRUE;
} else {
if(var1n | var2n) res = TRUE;
}
} else if(!strcmp(cond, "%") || !stricmp(cond, "mod")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(sign) {
if(!var2n || ((u_int)var1n % (u_int)var2n)) res = TRUE;
} else {
if(!var2n || (var1n % var2n)) res = TRUE;
}
}
} else if(!strcmp(cond, "/") || !stricmp(cond, "div")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(sign) {
if(!var2n || ((u_int)var1n / (u_int)var2n)) res = TRUE;
} else {
if(!var2n || (var1n / var2n)) res = TRUE;
}
}
} else if(!strcmp(cond, "<<") || !stricmp(cond, "shl")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(sign) {
if((u_int)var1n << (u_int)var2n) res = TRUE;
} else {
if(var1n << var2n) res = TRUE;
}
}
} else if(!strcmp(cond, ">>") || !stricmp(cond, "shr")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(sign) {
if((u_int)var1n >> (u_int)var2n) res = TRUE;
} else {
if(var1n >> var2n) res = TRUE;
}
}
} else if(!strcmp(cond, "!") || !stricmp(cond, "not")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(!var1n) res = TRUE;
}
} else if(!strcmp(cond, "!!")) {
if(var1) {
res = TRUE; // unsupported
} else {
if(var1n) res = TRUE;
}
} else if(!strcmp(cond, "~") || !stricmp(cond, "complement")) {
if(var1 && var2) {
res = TRUE; // unsupported
} else {
if(~var1n) res = TRUE;
}
} else if(!stricmp(cond, "strncmp") || !stricmp(cond, "strnicmp") || !stricmp(cond, "strncasecmp")) {
if(var1 && var2) {
if(sign) {
if(!strncmp (var1, var2, strlen(var2))) res = TRUE;
} else {
if(!strnicmp(var1, var2, strlen(var2))) res = TRUE;
}
} else {
if((var1n & var2n) == var2n) res = TRUE;
}
} else if(!stricmp(cond, "ext") || !stricmp(cond, "extension")) {
if(var1 && var2) {
p = strrchr(var1, '.');
if(p) {
if(sign) {
if(!strcmp (p + 1, var2)) res = TRUE;
} else {
if(!stricmp(p + 1, var2)) res = TRUE;
}
}
} else {
res = TRUE;
}
} else if(!stricmp(cond, "basename")) {
if(var1 && var2) {
#define check_condition_basename(X) \
s##X = mystrrchrs(var##X, PATH_DELIMITERS); \
if(!s##X) s##X = var##X; \
else while(*s##X && strchr(PATH_DELIMITERS, *s##X)) s##X++; \
p##X = strrchr(s##X, '.'); \
if(p##X) *p##X = 0;
check_condition_basename(1)
check_condition_basename(2)
if(sign) {
if(!strcmp (s1, s2)) res = TRUE;
} else {
if(!stricmp(s1, s2)) res = TRUE;
}
if(p1) *p1 = '.'; // restore
if(p2) *p2 = '.'; // restore
} else {
res = TRUE;
}
} else if(!stricmp(cond, "filepath")) {
if(var1 && var2) {
#define check_condition_filepath(X) \
for(p##X = var##X; *p##X; p##X++) { \
if(!strchr(PATH_DELIMITERS, *p##X)) break; \
} \
s##X = mystrrchrs(p##X, PATH_DELIMITERS); \
if(!s##X) s##X = p##X + strlen(p##X);
check_condition_filepath(1)
check_condition_filepath(2)
if((s1 - p1) == (s2 - p2)) {
for(; p1 != s1; p1++, p2++) {
if(strchr(PATH_DELIMITERS, *p1) && strchr(PATH_DELIMITERS, *p2)) continue;
if(sign) {
if(*p1 != *p2) break;
} else {
if(tolower(*p1) != tolower(*p2)) break;
}
}
if(p1 == s1) res = TRUE;
/* no slash/backslash check
if(sign) {
if(!strncmp (p1, p2, s1 - p1)) res = TRUE;
} else {
if(!strnicmp(p1, p2, s1 - p1)) res = TRUE;
}
*/
}
} else {
res = TRUE;
}
} else if(!stricmp(cond, "filename")) {
if(var1 && var2) {
s1 = mystrrchrs(var1, PATH_DELIMITERS);
if(!s1) s1 = var1;
else s1++;
s2 = mystrrchrs(var2, PATH_DELIMITERS);
if(!s2) s2 = var2;
else s2++;
if(sign) {
if(!strcmp (s1, s2)) res = TRUE;
} else {
if(!stricmp(s1, s2)) res = TRUE;
}
} else {
res = TRUE;
}
} else {
if(var1 && var2) {
fprintf(stderr, "\nError: invalid condition %s\n", cond);
myexit_cmd(cmd, QUICKBMS_ERROR_BMS);
}
int op = cond[0];
p = cond;
op = old_set_math_operator((u8 **)&p);
if(math_operations(cmd, var1n, op, var2n, sign)) res = TRUE;
}
if(g_verbose > 0) printf(" condition %s is%smet\n", cond, (res == TRUE) ? " " : " not ");
if(cmd < 0) break;
res_db[ifs] = res;
if((idx + 4) > MAX_ARGS) break;
cond = STR(idx);
if(!cond) break;
idx++;
cond_db[ifs] = cond;
}
// ifs is the number of handled "if" minus one
while(ifs > 0) {
for(i = 0; i < ifs; i++) {
// check current and next
res = check_condition(-1, res_db[i], cond_db[i], res_db[i + 1]);
// store in next that will become the new current
res_db[i + 1] = res;
}
// next->current
for(i = 0; i < ifs; i++) {
res_db[i] = res_db[i + 1];
cond_db[i] = cond_db[i + 1];
}
ifs--;
}
return(res);
}
int CMD_CLog_func(int cmd) {
int fd,
offset,
size,
zsize,
xsize = 0;
u8 *name;
name = VAR(0);
offset = VAR32(1);
zsize = VAR32(2);
size = VAR32(5);
fd = FILEZ(7);
if(CMD.var[8] >= 0) xsize = VAR32(8);
if(g_reimport < 0) {
g_reimport2_offset = CMD.var[1];
g_reimport2_zsize = CMD.var[2];
g_reimport2_size = CMD.var[5];
g_reimport2_xsize = CMD.var[8];
}
// filecrypt is redundant with log/clog
int g_filecrypt_size_bck = g_filecrypt.size;
g_filecrypt.size = 0;
if(dumpa(fd, name, VARNAME(0), offset, size, zsize, xsize) < 0) return -1;
g_filecrypt.size = g_filecrypt_size_bck;
return 0;
}
// this solution is a work-around for being able to use memcmp and memcmp_mask as function points instead of using redundant code and "if" statements
u32 memcmp_mask_value = 0;
__cdecl i32 memcmp_mask(const void *ptr1, const void *ptr2, size_t num) {
int i;
u8 *a = (u8*)ptr1,
*b = (u8*)ptr2;
for(i = 0; i < num; i++) {
if(memcmp_mask_value & (u32)((u32)1 << (u32)i)) {
// ok, it's a \x?? byte
} else {
if(a[i] < b[i]) return -1;
if(a[i] > b[i]) return 1;
}
}
return 0;
}
i32 re_match(const char* pattern, const char* text, i32* matchlength);
int CMD_FindLoc_func(int cmd) {
static u8 *sign = NULL,
*buff = NULL;
int fd,
i,
idx,
len,
oldoff,
tmpoff,
offset = -1LL,
str_len,
sign_len,
endoff = -1LL,
buffsz; // not static
u8 *str,
*ret_if_error;
fd = FILEZ(3);
oldoff = myftell(fd);
str = STR(2); // remember that str can be also a sequence of bytes, included 0x00!
str_len = NUM(2);
ret_if_error = STR(4);
if(CMD.var[5] >= 0) endoff = VAR32(5);
// the following has been disabled because causes troubles with old scripts
//quick_var_from_name_check(&str, &str_len); // so it supports also the variables
if(
(NUM(1) == BMS_TYPE_STRING) ||
(NUM(1) == BMS_TYPE_BINARY)
) {
if(str_len == strlen(str)) {
idx = get_var_from_name(str, -1);
if(idx >= 0) {
str = get_var(idx);
if(NUM(1) == BMS_TYPE_BINARY) {
str_len = get_var_fullsz(idx);
} else {
str_len = strlen(str);
}
}
}
sign_len = str_len;
MAX_ALLOC_CHECK(sign_len);
sign = realloc(sign, sign_len + 1);
if(!sign) STD_ERR(QUICKBMS_ERROR_MEMORY);
memcpy(sign, str, sign_len);
sign[sign_len] = 0;
} else if(NUM(1) == BMS_TYPE_UNICODE) {
if(str_len == strlen(str)) {
idx = get_var_from_name(str, -1);
if(idx >= 0) {
str = get_var(idx);
str_len = strlen(str);
}
}
sign_len = (str_len + 1) * sizeof(u16) /*sizeof(wchar_t)*/; // yeah includes also the NULL delimiter, boring unicode
if(sign_len < str_len) ALLOC_ERR;
MAX_ALLOC_CHECK(sign_len);
sign = realloc(sign, sign_len + 1);
if(!sign) STD_ERR(QUICKBMS_ERROR_MEMORY);
sign_len = utf8_to_utf16(str, str_len, sign, sign_len, 0);
} else if(NUM(1) == BMS_TYPE_REGEX) {
// all the code is here
buffsz = myfilesize(fd) - oldoff;
buff = realloc(buff, buffsz + 1);
if(!buff) STD_ERR(QUICKBMS_ERROR_MEMORY);
buffsz = myfr(fd, buff, buffsz, FALSE);
for(i = 0; i < buffsz; i++) {
if(!buff[i]) buff[i] = '\n';
}
i32 matchlength;
tmpoff = (u_int)-1LL;
if(
(endoff == (u_int)-1LL) // default till end of file
|| (endoff > oldoff) // if endoff is above current offset
) {
tmpoff = re_match(str, buff, &matchlength);
} else if(endoff < oldoff) {
for(len = 0;; len += matchlength) {
len = re_match(str, buff + len, &matchlength);
if(len < 0) break;
tmpoff = len;
}
}
if(tmpoff >= 0) offset = oldoff + tmpoff;
goto quit;
} else {
sign_len = NUM(1); // yeah the type in NUM(1) is written for having the size of the parameter, watch enum
if(sign_len < 0) STD_ERR(QUICKBMS_ERROR_BMS);
MAX_ALLOC_CHECK(sign_len);
sign = realloc(sign, sign_len + 1);
if(!sign) STD_ERR(QUICKBMS_ERROR_MEMORY);
sign[sign_len] = 0;
putxx(sign, myatoi(str), sign_len);
if(str_len == strlen(str)) {
idx = get_var_from_name(str, -1);
if(idx >= 0) {
if((NUM(1) <= 0) || (NUM(1) > sizeof(u64))) {
sign_len = sizeof(u32); // 32bit
MAX_ALLOC_CHECK(sign_len);
sign = realloc(sign, sign_len + 1);
if(!sign) STD_ERR(QUICKBMS_ERROR_MEMORY);
sign[sign_len] = 0;
}
putxx(sign, get_var32(idx), sign_len);
}
}
}
if(sign_len <= 0) goto quit;
if(sign_len > BUFFSZ) { // lazy boy
fprintf(stderr, "\nError: the FindLoc function works with a searchable string of max %d bytes\n", BUFFSZ);
myexit_cmd(cmd, QUICKBMS_ERROR_BMS);
}
if(!buff) {
buff = malloc(BUFFSZ + 1);
if(!buff) STD_ERR(QUICKBMS_ERROR_MEMORY);
}
buffsz = BUFFSZ;
tmpoff = oldoff;
__cdecl i32 (*FindLoc_memcmp)(const void *, const void *, size_t) = memcmp;
if(NUM(1) == BMS_TYPE_STRING) {
FindLoc_memcmp = mymemicmp;
}
if(CMD.mask) {
memcmp_mask_value = CMD.mask;
FindLoc_memcmp = memcmp_mask;
}
if(
(endoff == (u_int)-1LL) // default till end of file
|| (endoff > oldoff) // if endoff is above current offset
) {
for(;;) {
if(endoff == (u_int)-1LL) {
} else {
if((u_int)(endoff - tmpoff) < (u_int)buffsz) buffsz = endoff - tmpoff;
}
//len = myfr(fd, buff, -1, TRUE); // -1 uses BUFFSZ automatically and doesn't quit if the file terminates
len = myfr(fd, buff, buffsz, FALSE);
if(len < sign_len) break; // performes (len <= 0) too automatically
for(i = 0; i <= (len - sign_len); i++) {
if(!FindLoc_memcmp(buff + i, sign, sign_len)) {
offset = (myftell(fd) - len) + i;
goto quit;
}
}
if(!i) break;
tmpoff += i;
myfseek(fd, tmpoff, SEEK_SET);
//myfseek(fd, sign_len - 1, SEEK_CUR);
}
} else if(endoff < oldoff) {
for(;;) {
if((u_int)(tmpoff - endoff) < (u_int)buffsz) buffsz = tmpoff - endoff;
tmpoff -= buffsz;
myfseek(fd, tmpoff, SEEK_SET);
len = myfr(fd, buff, buffsz, FALSE);
if(len < sign_len) break; // performes (len <= 0) too automatically
for(i = (len - sign_len); i >= 0; i--) {
if(!FindLoc_memcmp(buff + i, sign, sign_len)) {
offset = (myftell(fd) - len) + i;
goto quit;
}
}
if((sign_len - 1) <= 0) break;
tmpoff += (sign_len - 1);
}
}
quit:
myfseek(fd, oldoff, SEEK_SET);
if(offset == (u_int)-1LL) {
if(ret_if_error) {
add_var(CMD.var[0], NULL, ret_if_error, 0, -1);
} else {
return -1; // confirmed
}
} else {
add_var(CMD.var[0], NULL, NULL, offset, sizeof(int));
}
return 0;
}
void add_var_reimport(variable_t *var, u_int offset, int fd, int type, int size) {
if(g_reimport && var) { // before it was < 0 but now let's keep it universal
memset(&var->reimport, 0, sizeof(variable_reimport_t));
var->reimport.offset = offset;
var->reimport.fd = fd;
var->reimport.type = type;
var->reimport.size = size;
if(fdnum_uses_filexor(fd, &g_filexor)) {
var->reimport.use_filexor = g_filexor.cmd; // check in case TOC is encrypted and data isn't
}
if(myftell(fd) == offset) {
if(g_reimport_shrink_enlarge && (type == BMS_TYPE_ASIZE)) {
// ok, we need to reset the size
} else {
var->reimport.type = BMS_TYPE_NONE; // no data has been read!
}
}
// no need to set the variable as "valid" for reimport2, type will be BMS_TYPE_NONE
}
}
int CMD_GetBits_func(int cmd) {
FDBITS
int fd,
len = -1,
tmpn = 0,
bits,
verbose_offset = 0;
u8 *tmp = NULL;
fd = FILEZ(2);
bits = VAR32(1);
/*if(g_verbose < 0)*/ verbose_offset = myftell(fd);
my_fdbits(fd, &bitchr, &bitpos, &bitoff, 0, 0, 0);
if(myftell(fd) != bitoff) {
bitchr = 0;
bitpos = 0;
}
if(bits <= INTSZ) { // INTSZ makes it compatible with quickbms_4gb_files till 64bit
tmpn = fd_read_bits(bits, &bitchr, &bitpos, fd, NULL);
} else {
len = ((bits + 7) & (~7)) / 8;
tmp = calloc(len + 1, 1);
if(!tmp) STD_ERR(QUICKBMS_ERROR_MEMORY);
len = bits2str(tmp, len, bits, &bitchr, &bitpos, fd);
}
my_fdbits(fd, NULL, NULL, NULL, bitchr, bitpos, myftell(fd));
if(tmp) {
if(g_verbose < 0) verbose_print(verbose_offset, "getbits", CMD.var[0], tmp, len, 0, bits);
if(g_debug_output) xdebug_print(verbose_offset, NULL , CMD.var[0], tmp, len, 0, -bits);
add_var(CMD.var[0], NULL, tmp, 0, len);
FREE(tmp)
} else {
if(g_verbose < 0) verbose_print(verbose_offset, "getbits", CMD.var[0], NULL, 0, tmpn, bits);
if(g_debug_output) xdebug_print(verbose_offset, NULL , CMD.var[0], NULL, 0, tmpn, -bits);
add_var(CMD.var[0], NULL, NULL, tmpn, sizeof(int));
}
add_var_reimport(&VARVAR(0), verbose_offset, fd, BMS_TYPE_BITS, bits);
return 0;
}
int CMD_PutBits_func(int cmd) {
FDBITS
int fd,
len = -1,
tmpn = 0,
bits,
verbose_offset = 0;
u8 *tmp = NULL;
fd = FILEZ(2);
bits = VAR32(1);
if(g_verbose < 0) verbose_offset = myftell(fd);
my_fdbits(fd, &bitchr, &bitpos, &bitoff, 0, 0, 0);
if(myftell(fd) != bitoff) {
bitchr = 0;
bitpos = 0;
}
if(bits <= INTSZ) { // INTSZ makes it compatible with quickbms_4gb_files till 64bit
tmpn = VAR32(0);
if(g_verbose < 0) verbose_print(verbose_offset, "putbits", CMD.var[0], NULL, 0, tmpn, bits);
fd_write_bits(tmpn, bits, &bitchr, &bitpos, fd, NULL);
} else {
len = ((bits + 7) & (~7)) / 8;
tmp = VAR(0);
if(len > VARSZ(0)) len = VARSZ(0);
if(g_verbose < 0) verbose_print(verbose_offset, "putbits", CMD.var[0], tmp, len, 0, bits);
len = str2bits(tmp, len, bits, &bitchr, &bitpos, fd);
}
my_fdbits(fd, NULL, NULL, NULL, bitchr, bitpos, myftell(fd));
return 0;
}
int CMD_Get_func(int cmd) {
int fd,
type,
retn = 0,
error = 0,
verbose_offset = 0;
u8 *ret = NULL,
tmp[sizeof(long double)];
fd = FILEZ(2);
type = NUM(1);
//if(g_verbose < 0) verbose_offset = myftell(fd);
//if(g_reimport < 0) verbose_offset = myftell(fd); // necessary
verbose_offset = myftell(fd); // mandatory
if(CMD.var[3] >= 0) {
//verbose_offset = myftell(fd);
myfseek(fd, VAR32(3), SEEK_SET);
}
ret = myfrx(fd, type, &retn, &error);
// now ret can be also NULL because myfrx is string/int
//if(!ret) return -1; // here should be good to quit... but I leave it as is for back compatibility with the old quickbms!
if(error) return -1;
if(ret) {
if(g_verbose < 0) verbose_print(verbose_offset, "get", CMD.var[0], ret, -1, 0, type);
if(g_debug_output) xdebug_print(verbose_offset, NULL , CMD.var[0], ret, -1, 0, type);
add_var(CMD.var[0], NULL, ret, 0, -1);
add_var_reimport(&VARVAR(0), verbose_offset, fd, type, retn);
} else {
if(g_verbose < 0) verbose_print(verbose_offset, "get", CMD.var[0], NULL, 0, retn, type);
if(g_debug_output) xdebug_print(verbose_offset, NULL , CMD.var[0], NULL, 0, retn, type);
add_var(CMD.var[0], NULL, NULL, retn, sizeof(int));
// work-around for obtaining the raw float number
if(type == BMS_TYPE_FLOAT) {
float tmp_float = 0;
myfseek(fd, -(int)sizeof(u32), SEEK_CUR);
myfr_endian(fd, tmp, sizeof(u32));
memcpy(&tmp_float, tmp, MIN(sizeof(u32), sizeof(tmp_float)));
VARVAR(0).float64 = tmp_float;
VARVAR(0).isnum = -1;
} else if(type == BMS_TYPE_DOUBLE) {
double tmp_double = 0;
myfseek(fd, -(int)sizeof(u64), SEEK_CUR);
myfr_endian(fd, tmp, sizeof(u64));
memcpy(&tmp_double, tmp, MIN(sizeof(u64), sizeof(tmp_double)));
VARVAR(0).float64 = tmp_double;
VARVAR(0).isnum = -1;
} else if(type == BMS_TYPE_LONGDOUBLE) {
long double tmp_longdouble = 0;
myfseek(fd, -(int)sizeof(tmp_longdouble), SEEK_CUR);
myfr_endian(fd, tmp, sizeof(tmp_longdouble));
memcpy(&tmp_longdouble, tmp, sizeof(tmp_longdouble));
VARVAR(0).float64 = tmp_longdouble;
VARVAR(0).isnum = -1;
}
add_var_reimport(&VARVAR(0), verbose_offset, fd, type, -1);
}
if(CMD.var[3] >= 0) {
myfseek(fd, verbose_offset, SEEK_SET);
}
return 0;
}
int CMD_IDString_func(int cmd) {
static int buffsz = 0;
static u8 *sign = NULL,
*buff = NULL;
int fd,
len,
verbose_offset = 0;
fd = FILEZ(0);
sign = STR(1);
len = NUM(1);
MAX_ALLOC_CHECK(len); // in case of updates
myalloc(&buff, len, &buffsz); // memcmp, so not + 1
if(g_verbose < 0) verbose_offset = myftell(fd);
myfr(fd, buff, len, TRUE);
int ret = -1;
if(CMD.mask) {
memcmp_mask_value = CMD.mask;
if(!memcmp_mask(buff, sign, len)) {