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Add compress, decompress, cleanup command

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topjohnwu
2017-03-05 01:50:36 +08:00
parent 65dc99744e
commit a4ce9f6f05
7 changed files with 212 additions and 86 deletions
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73
jni/magiskboot/compress.c
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@@ -359,6 +359,7 @@ int decomp(file_t type, const char *to, const unsigned char *from, size_t size)
return 0;
}
// Output will be to.ext
int comp(file_t type, const char *to, const unsigned char *from, size_t size) {
char name[PATH_MAX];
switch (type) {
@@ -388,3 +389,75 @@ int comp(file_t type, const char *to, const unsigned char *from, size_t size) {
}
return 0;
}
void decomp_file(char *from) {
int ok = 1;
unsigned char *file;
size_t size;
mmap_ro(from, &file, &size);
file_t type = check_type(file);
char *ext;
ext = strrchr(from, '.');
if (ext == NULL)
error(1, "Bad filename extention");
// File type and extension should match
switch (type) {
case GZIP:
if (strcmp(ext, ".gz") != 0)
ok = 0;
break;
case XZ:
if (strcmp(ext, ".xz") != 0)
ok = 0;
break;
case LZMA:
if (strcmp(ext, ".lzma") != 0)
ok = 0;
break;
case BZIP2:
if (strcmp(ext, ".bz2") != 0)
ok = 0;
break;
case LZ4:
if (strcmp(ext, ".lz4") != 0)
ok = 0;
break;
default:
error(1, "Provided file \'%s\' is not a supported archive format", from);
}
if (ok) {
// If all match, strip out the suffix
*ext = '\0';
decomp(type, from, file, size);
*ext = '.';
unlink(from);
} else {
error(1, "Bad filename extention \'%s\'", ext);
}
munmap(file, size);
}
void comp_file(const char *method, const char *from) {
file_t type;
if (strcmp(method, "gzip") == 0) {
type = GZIP;
} else if (strcmp(method, "xz") == 0) {
type = XZ;
} else if (strcmp(method, "lzma") == 0) {
type = LZMA;
} else if (strcmp(method, "lz4") == 0) {
type = LZ4;
} else if (strcmp(method, "bzip2") == 0) {
type = BZIP2;
} else {
error(1, "Only support following methods: " SUP_LIST);
}
unsigned char *file;
size_t size;
mmap_ro(from, &file, &size);
comp(type, from, file, size);
munmap(file, size);
unlink(from);
}