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#include <dirent.h>
#include <strings.h>
#include <Sources.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <Menes/ObjectHandle.h>
void Finish(const char *finish) {
if (finish == NULL)
return;
const char *cydia(getenv("CYDIA"));
if (cydia == NULL)
return;
int fd([[[[NSString stringWithUTF8String:cydia] componentsSeparatedByString:@" "] objectAtIndex:0] intValue]);
FILE *fout(fdopen(fd, "w"));
fprintf(fout, "finish:%s\n", finish);
fclose(fout);
}
static bool setnsfpn(const char *path) {
return system([[NSString stringWithFormat:@"/usr/libexec/cydia/setnsfpn %s", path] UTF8String]) == 0;
}
enum StashStatus {
StashDone,
StashFail,
StashGood,
};
static StashStatus MoveStash() {
struct stat stat;
if (lstat("/var/stash", &stat) == -1)
return errno == ENOENT ? StashGood : StashFail;
else if (S_ISLNK(stat.st_mode))
return StashGood;
else if (!S_ISDIR(stat.st_mode))
return StashFail;
if (lstat("/var/db/stash", &stat) == -1) {
if (errno == ENOENT)
goto move;
else return StashFail;
} else if (S_ISLNK(stat.st_mode))
// XXX: this is fixable
return StashFail;
else if (!S_ISDIR(stat.st_mode))
return StashFail;
else {
if (!setnsfpn("/var/db/stash"))
return StashFail;
if (system("mv -t /var/stash /var/db/stash/*") != 0)
return StashFail;
if (rmdir("/var/db/stash") == -1)
return StashFail;
} move:
if (!setnsfpn("/var/stash"))
return StashFail;
if (rename("/var/stash", "/var/db/stash") == -1)
return StashFail;
if (symlink("/var/db/stash", "/var/stash") != -1)
return StashDone;
if (rename("/var/db/stash", "/var/stash") != -1)
return StashFail;
fprintf(stderr, "/var/stash misplaced -- DO NOT REBOOT\n");
return StashFail;
}
static bool FixProtections() {
const char *path("/var/lib");
mkdir(path, 0755);
if (!setnsfpn(path)) {
fprintf(stderr, "failed to setnsfpn %s\n", path);
return false;
}
return true;
}
static void FixPermissions() {
DIR *stash(opendir("/var/stash"));
if (stash == NULL)
return;
while (dirent *entry = readdir(stash)) {
const char *folder(entry->d_name);
if (strlen(folder) != 8)
continue;
if (strncmp(folder, "_.", 2) != 0)
continue;
char path[1024];
sprintf(path, "/var/stash/%s", folder);
struct stat stat;
if (lstat(path, &stat) == -1)
continue;
if (!S_ISDIR(stat.st_mode))
continue;
chmod(path, 0755);
}
closedir(stash);
}
#define APPLICATIONS "/Applications"
static bool FixApplications() {
char target[1024];
ssize_t length(readlink(APPLICATIONS, target, sizeof(target)));
if (length == -1)
return false;
if (length >= sizeof(target)) // >= "just in case" (I'm nervous)
return false;
target[length] = '\0';
if (strlen(target) != 30)
return false;
if (memcmp(target, "/var/stash/Applications.", 24) != 0)
return false;
if (strchr(target + 24, '/') != NULL)
return false;
struct stat stat;
if (lstat(target, &stat) == -1)
return false;
if (!S_ISDIR(stat.st_mode))
return false;
char temp[] = "/var/stash/_.XXXXXX";
if (mkdtemp(temp) == NULL)
return false;
if (false) undo: {
unlink(temp);
return false;
}
if (chmod(temp, 0755) == -1)
goto undo;
char destiny[strlen(temp) + 32];
sprintf(destiny, "%s%s", temp, APPLICATIONS);
if (unlink(APPLICATIONS) == -1)
goto undo;
if (rename(target, destiny) == -1) {
if (symlink(target, APPLICATIONS) == -1)
fprintf(stderr, "/Applications damaged -- DO NOT REBOOT\n");
goto undo;
} else {
bool success;
if (symlink(destiny, APPLICATIONS) != -1)
success = true;
else {
fprintf(stderr, "/var/stash/Applications damaged -- DO NOT REBOOT\n");
success = false;
}
// unneccessary, but feels better (I'm nervous)
symlink(destiny, target);
[@APPLICATIONS writeToFile:[NSString stringWithFormat:@"%s.lnk", temp] atomically:YES encoding:NSNonLossyASCIIStringEncoding error:NULL];
return success;
}
}
int main(int argc, const char *argv[]) {
if (argc < 2 || strcmp(argv[1], "configure") != 0)
return 0;
NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
bool restart(false);
if (kCFCoreFoundationVersionNumber >= 1000) {
if (!FixProtections())
return 1;
switch (MoveStash()) {
case StashDone:
restart = true;
break;
case StashFail:
fprintf(stderr, "failed to move stash\n");
return 1;
case StashGood:
break;
}
}
#define OldCache_ "/var/root/Library/Caches/com.saurik.Cydia"
if (access(OldCache_, F_OK) == 0)
system("rm -rf " OldCache_);
#define NewCache_ "/var/mobile/Library/Caches/com.saurik.Cydia"
system("cd /; su -c 'mkdir -p " NewCache_ "' mobile");
if (access(NewCache_ "/lists", F_OK) != 0 && errno == ENOENT)
system("cp -at " NewCache_ " /var/lib/apt/lists");
system("chown -R 501.501 " NewCache_);
#define OldLibrary_ "/var/lib/cydia"
#define NewLibrary_ "/var/mobile/Library/Cydia"
system("cd /; su -c 'mkdir -p " NewLibrary_ "' mobile");
#define Cytore_ "/metadata.cb0"
#define CYDIA_LIST "/etc/apt/sources.list.d/cydia.list"
unlink(CYDIA_LIST);
[[NSString stringWithFormat:@
"deb http://apt.saurik.com/ ios/%.2f main\n"
"deb http://apt.thebigboss.org/repofiles/cydia/ stable main\n"
"deb http://cydia.zodttd.com/repo/cydia/ stable main\n"
"deb http://apt.modmyi.com/ stable main\n"
, kCFCoreFoundationVersionNumber] writeToFile:@ CYDIA_LIST atomically:YES];
if (access(NewLibrary_ Cytore_, F_OK) != 0 && errno == ENOENT) {
if (access(NewCache_ Cytore_, F_OK) == 0)
system("mv -f " NewCache_ Cytore_ " " NewLibrary_);
else if (access(OldLibrary_ Cytore_, F_OK) == 0)
system("mv -f " OldLibrary_ Cytore_ " " NewLibrary_);
chown(NewLibrary_ Cytore_, 501, 501);
}
FixPermissions();
restart |= FixApplications();
if (restart)
Finish("restart");
[pool release];
return 0;
}
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