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#define _FILE_OFFSET_BITS 64
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <limits.h>
#include <stdint.h>
#ifndef MAX_PATH
#define MAX_PATH 4096
#endif
#include "debug.h"
#include "fileutils.h"
static const char* x86sign = "\x7f" "ELF" "\x01" "\x01" "\x01" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x02" "\x00" "\x03" "\x00";
static const char* x64sign = "\x7f" "ELF" "\x02" "\x01" "\x01" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x02" "\x00" "\x3e" "\x00";
static const char* x86lib = "\x7f" "ELF" "\x01" "\x01" "\x01" "\x03" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x03" "\x00" "\x03" "\x00";
static const char* x64lib = "\x7f" "ELF" "\x02" "\x01" "\x01" "\x03" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x00" "\x03" "\x00" "\x3e" "\x00";
int FileExist(const char* filename, int flags)
{
struct stat sb;
if (stat(filename, &sb) == -1)
return 0;
if(flags==-1)
return 1;
// check type of file? should be executable, or folder
if(flags&IS_FILE) {
if(!S_ISREG(sb.st_mode))
return 0;
} else if(!S_ISDIR(sb.st_mode))
return 0;
if(flags&IS_EXECUTABLE) {
if((sb.st_mode&S_IXUSR)!=S_IXUSR)
return 0; // nope
}
return 1;
}
char* ResolveFile(const char* filename, path_collection_t* paths)
{
char p[MAX_PATH];
if(filename[0]=='/')
return strdup(filename);
for (int i=0; i<paths->size; ++i) {
if(paths->paths[i][0]!='/') {
// not an absolute path...
if(!getcwd(p, sizeof(p))) return NULL;
if(p[strlen(p)-1]!='/')
strcat(p, "/");
strcat(p, paths->paths[i]);
} else
strcpy(p, paths->paths[i]);
strcat(p, filename);
if(FileExist(p, IS_FILE))
return realpath(p, NULL);
}
return NULL;
}
int FileIsX64ELF(const char* filename)
{
FILE *f = fopen(filename, "rb");
if(!f)
return 0;
char head[20] = {0};
int sz = fread(head, 20, 1, f);
if(sz!=1) {
fclose(f);
return 0;
}
fclose(f);
if(memcmp(head, x64sign, 20)==0)
return 1;
head[7] = x64lib[7]; // this one changes
if(memcmp(head, x64lib, 20)==0)
return 1;
return 0;
}
int FileIsX86ELF(const char* filename)
{
FILE *f = fopen(filename, "rb");
if(!f)
return 0;
char head[20] = {0};
int sz = fread(head, 20, 1, f);
if(sz!=1) {
fclose(f);
return 0;
}
fclose(f);
if(memcmp(head, x86sign, 20)==0)
return 1;
head[7] = x64lib[7];
if(memcmp(head, x86lib, 20)==0)
return 1;
return 0;
}
#if defined(RPI) || defined(RK3399) || defined(RK3326)
void sanitize_mojosetup_gtk_background()
{
// get GTK2_RC_FILES folder
const char* gtk2_rc = getenv("GTK2_RC_FILES");
// check if $GTK2_RC_FILES/pixmaps/background.png exist
char background[1000] = {0};
strcpy(background, gtk2_rc);
char* p = strrchr(background, '/'); // remove "/gtkrc"
// every error will just silently abort
if(!p)
return;
*p = 0;
strcat(background, "/pixmaps/background.png");
if(!FileExist(background, IS_FILE))
return;
// now open are read the header of the PNG to grab the width and height
//very crude reading here!
FILE* f = fopen(background, "rb");
if(!f)
return;
char sign[8];
if(fread(sign, 8, 1, f)!=1) {
fclose(f); return;
}
const char ref[8] = {'\211', 'P', 'N', 'G', '\r', '\n', '\032', '\n' };
if (memcmp(sign, ref, 8)) {
fclose(f); return;
}
int32_t width, height;
fseek(f, 16, SEEK_SET);
if(fread(&width, sizeof(width), 1, f)!=1) {
fclose(f); return;
}
if(fread(&height, sizeof(height), 1, f)!=1) {
fclose(f); return;
}
fclose(f);
// need to swap bitness!
width = __builtin_bswap32(width);
height = __builtin_bswap32(height);
printf_log(LOG_INFO, "Mojosetup detected, size of background picture is %dx%d\n", width, height);
if(width!=5000 || height!=3000)
return; // not a background that will cause any issue
// delete the file!
f = fopen(background, "r+b");
remove(background);
printf_log(LOG_INFO, "background deleted!\n");
}
#endif
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