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Refactor magiskboot

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This commit is contained in:
topjohnwu
2017-12-21 03:36:18 +08:00
parent e8dd1b292f
commit a3c49de6a5
16 changed files with 351 additions and 347 deletions
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223
core/jni/utils/cpio.c
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@ -22,34 +22,42 @@ static uint32_t x8u(char *hex) {
return val;
}
static void cpio_free(cpio_entry *f) {
if (f) {
free(f->filename);
free(f->data);
free(f);
void cpio_free(cpio_entry *e) {
if (e) {
free(e->filename);
free(e->data);
free(e);
}
}
int cpio_find(struct vector *v, const char *entry) {
cpio_entry *e;
vec_for_each(v, e) {
if (!e) continue;
if (strcmp(e->filename, entry) == 0)
return _;
}
return -1;
}
int cpio_cmp(const void *a, const void *b) {
return strcmp((*(cpio_entry **) a)->filename, (*(cpio_entry **) b)->filename);
return strcmp(((cpio_entry *) a)->filename, ((cpio_entry *) b)->filename);
}
void cpio_vec_insert(struct vector *v, cpio_entry *n) {
cpio_entry *f;
vec_for_each(v, f) {
if (strcmp(f->filename, n->filename) == 0) {
// Replace, then all is done
cpio_free(f);
vec_cur(v) = n;
return;
}
int i = cpio_find(v, n->filename);
if (i > 0) {
// Replace, then all is done
cpio_free(vec_entry(v)[i]);
vec_entry(v)[i] = n;
return;
}
vec_push_back(v, n);
}
// Parse cpio file to a vector of cpio_entry
void parse_cpio(struct vector *v, const char *filename) {
fprintf(stderr, "Loading cpio: [%s]\n\n", filename);
fprintf(stderr, "Loading cpio: [%s]\n", filename);
int fd = open(filename, O_RDONLY);
if (fd < 0) return;
cpio_newc_header header;
@ -91,35 +99,34 @@ void parse_cpio(struct vector *v, const char *filename) {
}
void dump_cpio(struct vector *v, const char *filename) {
fprintf(stderr, "\nDump cpio: [%s]\n\n", filename);
int fd = creat(filename, 0644);
fprintf(stderr, "Dump cpio: [%s]\n", filename);
unsigned inode = 300000;
char header[111];
// Sort by name
vec_sort(v, cpio_cmp);
cpio_entry *f;
vec_for_each(v, f) {
if (f->remove) continue;
cpio_entry *e;
int fd = creat(filename, 0644);
vec_for_each(v, e) {
sprintf(header, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x",
inode++, // f->ino
f->mode,
f->uid,
f->gid,
1, // f->nlink
0, // f->mtime
f->filesize,
0, // f->devmajor
0, // f->devminor
0, // f->rdevmajor
0, // f->rdevminor
(uint32_t) strlen(f->filename) + 1,
0 // f->check
inode++, // e->ino
e->mode,
e->uid,
e->gid,
1, // e->nlink
0, // e->mtime
e->filesize,
0, // e->devmajor
0, // e->devminor
0, // e->rdevmajor
0, // e->rdevminor
(uint32_t) strlen(e->filename) + 1,
0 // e->check
);
xwrite(fd, header, 110);
xwrite(fd, f->filename, strlen(f->filename) + 1);
xwrite(fd, e->filename, strlen(e->filename) + 1);
file_align(fd, 4, 1);
if (f->filesize) {
xwrite(fd, f->data, f->filesize);
if (e->filesize) {
xwrite(fd, e->data, e->filesize);
file_align(fd, 4, 1);
}
}
@ -133,23 +140,22 @@ void dump_cpio(struct vector *v, const char *filename) {
void cpio_vec_destroy(struct vector *v) {
// Free each cpio_entry
cpio_entry *f;
vec_for_each(v, f) {
cpio_free(f);
}
cpio_entry *e;
vec_for_each(v, e)
cpio_free(e);
vec_destroy(v);
}
void cpio_rm(struct vector *v, int recursive, const char *entry) {
cpio_entry *f;
vec_for_each(v, f) {
if (strncmp(f->filename, entry, strlen(entry)) == 0) {
char next = f->filename[strlen(entry)];
if ((recursive && next == '/') || next == '\0') {
if (!f->remove) {
fprintf(stderr, "Remove [%s]\n", f->filename);
f->remove = 1;
}
cpio_entry *e;
size_t len = strlen(entry);
vec_for_each(v, e) {
if (!e) continue;
if (strncmp(e->filename, entry, len) == 0) {
if ((recursive && e->filename[len] == '/') || e->filename[len] == '\0') {
fprintf(stderr, "Remove [%s]\n", e->filename);
cpio_free(e);
vec_cur(v) = NULL;
if (!recursive) return;
}
}
@ -157,97 +163,94 @@ void cpio_rm(struct vector *v, int recursive, const char *entry) {
}
void cpio_mkdir(struct vector *v, mode_t mode, const char *entry) {
cpio_entry *f = xcalloc(sizeof(*f), 1);
f->mode = S_IFDIR | mode;
f->filename = strdup(entry);
cpio_vec_insert(v, f);
cpio_entry *e = xcalloc(sizeof(*e), 1);
e->mode = S_IFDIR | mode;
e->filename = strdup(entry);
cpio_vec_insert(v, e);
fprintf(stderr, "Create directory [%s] (%04o)\n",entry, mode);
}
void cpio_ln(struct vector *v, const char *target, const char *entry) {
cpio_entry *f = xcalloc(sizeof(*f), 1);
f->mode = S_IFLNK;
f->filename = strdup(entry);
f->filesize = strlen(target);
f->data = strdup(target);
cpio_vec_insert(v, f);
cpio_entry *e = xcalloc(sizeof(*e), 1);
e->mode = S_IFLNK;
e->filename = strdup(entry);
e->filesize = strlen(target);
e->data = strdup(target);
cpio_vec_insert(v, e);
fprintf(stderr, "Create symlink [%s] -> [%s]\n", entry, target);
}
void cpio_add(struct vector *v, mode_t mode, const char *entry, const char *filename) {
int fd = xopen(filename, O_RDONLY);
cpio_entry *f = xcalloc(sizeof(*f), 1);
f->mode = S_IFREG | mode;
f->filename = strdup(entry);
f->filesize = lseek(fd, 0, SEEK_END);
cpio_entry *e = xcalloc(sizeof(*e), 1);
e->mode = S_IFREG | mode;
e->filename = strdup(entry);
e->filesize = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
f->data = xmalloc(f->filesize);
xxread(fd, f->data, f->filesize);
e->data = xmalloc(e->filesize);
xxread(fd, e->data, e->filesize);
close(fd);
cpio_vec_insert(v, f);
cpio_vec_insert(v, e);
fprintf(stderr, "Add entry [%s] (%04o)\n", entry, mode);
}
int cpio_mv(struct vector *v, const char *from, const char *to) {
struct cpio_entry *f, *t;
vec_for_each(v, f) {
if (strcmp(f->filename, from) == 0) {
fprintf(stderr, "Move [%s] -> [%s]\n", from, to);
vec_for_each(v, t) {
if (strcmp(t->filename, to) == 0) {
t->remove = 1;
break;
}
}
free(f->filename);
f->filename = strdup(to);
return 0;
struct cpio_entry *e;
int f = cpio_find(v, from), t = cpio_find(v, to);
if (f > 0) {
if (t > 0) {
cpio_free(vec_entry(v)[t]);
vec_entry(v)[t] = NULL;
}
e = vec_entry(v)[f];
free(e->filename);
e->filename = strdup(to);
return 0;
}
fprintf(stderr, "Cannot find entry %s\n", from);
return 1;
}
int cpio_extract(struct vector *v, const char *entry, const char *filename) {
cpio_entry *f;
vec_for_each(v, f) {
if (strcmp(f->filename, entry) == 0) {
fprintf(stderr, "Extracting [%s] to [%s]\n\n", entry, filename);
if (S_ISREG(f->mode)) {
int fd = creat(filename, f->mode & 0777);
xwrite(fd, f->data, f->filesize);
fchown(fd, f->uid, f->gid);
close(fd);
} else if (S_ISLNK(f->mode)) {
char *target = xcalloc(f->filesize + 1, 1);
memcpy(target, f->data, f->filesize);
unlink(filename);
symlink(target, filename);
}
return 0;
int i = cpio_find(v, entry);
if (i > 0) {
cpio_entry *e = vec_entry(v)[i];
fprintf(stderr, "Extracting [%s] to [%s]\n", entry, filename);
if (S_ISREG(e->mode)) {
int fd = creat(filename, e->mode & 0777);
xwrite(fd, e->data, e->filesize);
fchown(fd, e->uid, e->gid);
close(fd);
} else if (S_ISLNK(e->mode)) {
char *target = xcalloc(e->filesize + 1, 1);
memcpy(target, e->data, e->filesize);
unlink(filename);
symlink(target, filename);
}
return 0;
}
fprintf(stderr, "Cannot find the file entry [%s]\n", entry);
return 1;
}
void cpio_extract_all(struct vector *v) {
cpio_entry *f;
vec_for_each(v, f) {
fprintf(stderr, "Extracting [%s]\n", f->filename);
unlink(f->filename);
rmdir(f->filename);
if (S_ISDIR(f->mode)) {
mkdir(f->filename, f->mode & 0777);
} else if (S_ISREG(f->mode)) {
int fd = creat(f->filename, f->mode & 0777);
xwrite(fd, f->data, f->filesize);
fchown(fd, f->uid, f->gid);
cpio_entry *e;
vec_for_each(v, e) {
if (!e) continue;
fprintf(stderr, "Extracting [%s]\n", e->filename);
unlink(e->filename);
rmdir(e->filename);
if (S_ISDIR(e->mode)) {
mkdir(e->filename, e->mode & 0777);
} else if (S_ISREG(e->mode)) {
int fd = creat(e->filename, e->mode & 0777);
xwrite(fd, e->data, e->filesize);
fchown(fd, e->uid, e->gid);
close(fd);
} else if (S_ISLNK(f->mode)) {
char *target = xcalloc(f->filesize + 1, 1);
memcpy(target, f->data, f->filesize);
symlink(target, f->filename);
} else if (S_ISLNK(e->mode)) {
char *target = xcalloc(e->filesize + 1, 1);
memcpy(target, e->data, e->filesize);
symlink(target, e->filename);
}
}
}