rename test.py to importpkg.py

1 files changed, 0 insertions, 319 deletions

diff --git a/test.py b/test.py
deleted file mode 100755
index a45720a..0000000
--- a/test.py
+++ /dev/null
@@ -1,319 +0,0 @@
-#!/usr/bin/python
-"""
-CREATE TABLE package (package TEXT PRIMARY KEY, version TEXT, architecture TEXT);
-CREATE TABLE content (package TEXT, filename TEXT, size INTEGER, function TEXT, hash TEXT, FOREIGN KEY (package) REFERENCES package(package));
-CREATE TABLE dependency (package TEXT, required TEXT, FOREIGN KEY (package) REFERENCES package(package), FOREIGN KEY (required) REFERENCES package(package));
-CREATE INDEX content_package_index ON content (package);
-CREATE INDEX content_hash_index ON content (hash);
-"""
-
-import hashlib
-import sqlite3
-import struct
-import sys
-import tarfile
-import zlib
-
-from debian.debian_support import version_compare
-from debian import deb822
-import lzma
-
-class ArReader(object):
-    global_magic = b"!<arch>\n"
-    file_magic = b"`\n"
-
-    def __init__(self, fileobj):
-        self.fileobj = fileobj
-        self.remaining = None
-        self.padding = 0
-
-    def skip(self, length):
-        while length:
-            data = self.fileobj.read(min(4096, length))
-            if not data:
-                raise ValueError("archive truncated")
-            length -= len(data)
-
-    def read_magic(self):
-        data = self.fileobj.read(len(self.global_magic))
-        if data != self.global_magic:
-            raise ValueError("ar global header not found")
-        self.remaining = 0
-
-    def read_entry(self):
-        self.skip_current_entry()
-        if self.padding:
-            if self.fileobj.read(1) != '\n':
-                raise ValueError("missing ar padding")
-            self.padding = 0
-        file_header = self.fileobj.read(60)
-        if not file_header:
-            raise EOFError("end of archive found")
-        parts = struct.unpack("16s 12s 6s 6s 8s 10s 2s", file_header)
-        parts = [p.rstrip(" ") for p in parts]
-        if parts.pop() != self.file_magic:
-            raise ValueError("ar file header not found")
-        self.remaining = int(parts[5])
-        self.padding = self.remaining % 2
-        return parts[0] # name
-
-    def skip_current_entry(self):
-        self.skip(self.remaining)
-        self.remaining = 0
-
-    def read(self, length=None):
-        if length is None:
-            length = self.remaining
-        else:
-            length = min(self.remaining, length)
-        data = self.fileobj.read(length)
-        self.remaining -= len(data)
-        return data
-
-class XzStream(object):
-    blocksize = 65536
-
-    def __init__(self, fileobj):
-        self.fileobj = fileobj
-        self.decomp = lzma.LZMADecompressor()
-        self.buff = b""
-
-    def read(self, length):
-        data = True
-        while True:
-            if len(self.buff) >= length:
-                ret = self.buff[:length]
-                self.buff = self.buff[length:]
-                return ret
-            elif not data: # read EOF in last iteration
-                ret = self.buff
-                self.buff = b""
-                return ret
-            data = self.fileobj.read(self.blocksize)
-            if data:
-                self.buff += self.decomp.decompress(data)
-            else:
-                self.buff += self.decomp.flush()
-
-class MultiHash(object):
-    def __init__(self, *hashes):
-        self.hashes = hashes
-
-    def update(self, data):
-        for hasher in self.hashes:
-            hasher.update(data)
-
-class HashBlacklist(object):
-    def __init__(self, hasher, blacklist=set()):
-        self.hasher = hasher
-        self.blacklist = blacklist
-        self.update = self.hasher.update
-        self.name = hasher.name
-
-    def hexdigest(self):
-        digest = self.hasher.hexdigest()
-        if digest in self.blacklist:
-            return None
-        return digest
-
-class GzipDecompressor(object):
-    def __init__(self):
-        self.inbuffer = b""
-        self.decompressor = None # zlib.decompressobj(-zlib.MAX_WBITS)
-
-    def decompress(self, data):
-        if self.decompressor:
-            data = self.decompressor.decompress(data)
-            if not self.decompressor.unused_data:
-                return data
-            unused_data = self.decompressor.unused_data
-            self.decompressor = None
-            return data + self.decompress(unused_data)
-        self.inbuffer += data
-        skip = 10
-        if len(self.inbuffer) < skip:
-            return b""
-        if not self.inbuffer.startswith(b"\037\213\010"):
-            raise ValueError("gzip magic not found")
-        flag = ord(self.inbuffer[3])
-        if flag & 4:
-            if len(self.inbuffer) < skip + 2:
-                return b""
-            length, = struct.unpack("<H", self.inbuffer[skip:skip+2])
-            skip += 2 + length
-        for field in (8, 16):
-            if flag & field:
-                length = self.inbuffer.find("\0", skip)
-                if length < 0:
-                    return b""
-                skip = length + 1
-        if flag & 2:
-            skip += 2
-        if len(self.inbuffer) < skip:
-            return b""
-        data = self.inbuffer[skip:]
-        self.inbuffer = b""
-        self.decompressor = zlib.decompressobj(-zlib.MAX_WBITS)
-        return self.decompress(data)
-
-    @property
-    def unused_data(self):
-        if self.decompressor:
-            return self.decompressor.unused_data
-        else:
-            return self.inbuffer
-
-    def flush(self):
-        if not self.decompressor:
-            return b""
-        return self.decompressor.flush()
-
-    def copy(self):
-        new = GzipDecompressor()
-        new.inbuffer = self.inbuffer
-        if self.decompressor:
-            new.decompressor = self.decompressor.copy()
-        return new
-
-class DecompressedHash(object):
-    def __init__(self, decompressor, hashobj):
-        self.decompressor = decompressor
-        self.hashobj = hashobj
-
-    def update(self, data):
-        self.hashobj.update(self.decompressor.decompress(data))
-
-    def hexdigest(self):
-        if not hasattr(self.decompressor, "flush"):
-            return self.hashobj.hexdigest()
-        tmpdecomp = self.decompressor.copy()
-        data = tmpdecomp.flush()
-        tmphash = self.hashobj.copy()
-        tmphash.update(data)
-        return tmphash.hexdigest()
-
-class SuppressingHash(object):
-    def __init__(self, hashobj, exceptions=()):
-        self.hashobj = hashobj
-        self.exceptions = exceptions
-
-    def update(self, data):
-        if self.hashobj:
-            try:
-                self.hashobj.update(data)
-            except self.exceptions:
-                self.hashobj = None
-
-    def hexdigest(self):
-        if self.hashobj:
-            try:
-                return self.hashobj.hexdigest()
-            except self.exceptions:
-                self.hashobj = None
-        return None
-
-def hash_file(hashobj, filelike, blocksize=65536):
-    data = filelike.read(blocksize)
-    while data:
-        hashobj.update(data)
-        data = filelike.read(blocksize)
-    return hashobj
-
-boring_sha512_hashes = set((
-    # ""
-    "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e",
-    # "\n"
-    "be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09"))
-
-def sha512_nontrivial():
-    return HashBlacklist(hashlib.sha512(), boring_sha512_hashes)
-
-def gziphash():
-    hashobj = DecompressedHash(GzipDecompressor(), hashlib.sha512())
-    hashobj = SuppressingHash(hashobj, (ValueError, zlib.error))
-    hashobj.name = "gzip_sha512"
-    return HashBlacklist(hashobj, boring_sha512_hashes)
-
-def get_hashes(tar):
-    for elem in tar:
-        if not elem.isreg(): # excludes hard links as well
-            continue
-        hasher = MultiHash(sha512_nontrivial(), gziphash())
-        hasher = hash_file(hasher, tar.extractfile(elem))
-        for hashobj in hasher.hashes:
-            hashvalue = hashobj.hexdigest()
-            if hashvalue:
-                yield (elem.name, elem.size, hashobj.name, hashvalue)
-
-def process_package(db, filelike):
-    cur = db.cursor()
-    af = ArReader(filelike)
-    af.read_magic()
-    state = "start"
-    while True:
-        try:
-            name = af.read_entry()
-        except EOFError:
-            break
-        if name == "control.tar.gz":
-            if state != "start":
-                raise ValueError("unexpected control.tar.gz")
-            state = "control"
-            tf = tarfile.open(fileobj=af, mode="r|gz")
-            for elem in tf:
-                if elem.name != "./control":
-                    continue
-                if state != "control":
-                    raise ValueError("duplicate control file")
-                state = "control_file"
-                control = tf.extractfile(elem).read()
-                control = deb822.Packages(control)
-                package = control["package"].encode("ascii")
-                version = control["version"].encode("ascii")
-                architecture = control["architecture"].encode("ascii")
-
-                cur.execute("SELECT version FROM package WHERE package = ?;",
-                            (package,))
-                row = cur.fetchone()
-                if row and version_compare(row[0], version) > 0:
-                    return # already seen a newer package
-
-                cur.execute("DELETE FROM package WHERE package = ?;",
-                            (package,))
-                cur.execute("DELETE FROM content WHERE package = ?;",
-                            (package,))
-                cur.execute("INSERT INTO package (package, version, architecture) VALUES (?, ?, ?);",
-                            (package, version, architecture))
-                depends = control.relations.get("depends", [])
-                depends = set(dep[0]["name"].encode("ascii")
-                              for dep in depends if len(dep) == 1)
-                cur.execute("DELETE FROM dependency WHERE package = ?;",
-                            (package,))
-                cur.executemany("INSERT INTO dependency (package, required) VALUES (?, ?);",
-                                ((package, dep) for dep in depends))
-                break
-            continue
-        elif name == "data.tar.gz":
-            tf = tarfile.open(fileobj=af, mode="r|gz")
-        elif name == "data.tar.bz2":
-            tf = tarfile.open(fileobj=af, mode="r|bz2")
-        elif name == "data.tar.xz":
-            zf = XzStream(af)
-            tf = tarfile.open(fileobj=zf, mode="r|")
-        else:
-            continue
-        if state != "control_file":
-            raise ValueError("missing control file")
-        for name, size, function, hexhash in get_hashes(tf):
-            cur.execute("INSERT INTO content (package, filename, size, function, hash) VALUES (?, ?, ?, ?, ?);",
-                        (package, name.decode("utf8"), size, function, hexhash))
-        db.commit()
-        return
-    raise ValueError("data.tar not found")
-
-def main():
-    db = sqlite3.connect("test.sqlite3")
-    process_package(db, sys.stdin)
-
-if __name__ == "__main__":
-    main()