]> git.donarmstrong.com Git - dak.git/blobdiff - daklib/upload.py
Import errno, used in Exception handling.
[dak.git] / daklib / upload.py
index c55c4090496818d9c5f5cf07f64ec6445d58e7af..7095b679c05aa991484bcb7393a16a5161ef5552 100644 (file)
@@ -23,36 +23,53 @@ It provides methods to access the included binary and source packages.
 
 import apt_inst
 import apt_pkg
+import errno
 import os
 import re
 
 from daklib.gpg import SignedFile
 from daklib.regexes import *
+import daklib.packagelist
 
-class InvalidChangesException(Exception):
+class UploadException(Exception):
     pass
 
-class InvalidBinaryException(Exception):
+class InvalidChangesException(UploadException):
     pass
 
-class InvalidSourceException(Exception):
+class InvalidBinaryException(UploadException):
     pass
 
-class InvalidHashException(Exception):
+class InvalidSourceException(UploadException):
+    pass
+
+class InvalidHashException(UploadException):
     def __init__(self, filename, hash_name, expected, actual):
         self.filename = filename
         self.hash_name = hash_name
         self.expected = expected
         self.actual = actual
     def __str__(self):
-        return "Invalid {0} hash for {1}: expected {2}, but got {3}.".format(self.hash_name, self.filename, self.expected, self.actual)
-
-class InvalidFilenameException(Exception):
+        return ("Invalid {0} hash for {1}:\n"
+                "According to the control file the {0} hash should be {2},\n"
+                "but {1} has {3}.\n"
+                "\n"
+                "If you did not include {1} in you upload, a different version\n"
+                "might already be known to the archive software.") \
+                .format(self.hash_name, self.filename, self.expected, self.actual)
+
+class InvalidFilenameException(UploadException):
     def __init__(self, filename):
         self.filename = filename
     def __str__(self):
         return "Invalid filename '{0}'.".format(self.filename)
 
+class FileDoesNotExist(UploadException):
+    def __init__(self, filename):
+        self.filename = filename
+    def __str__(self):
+        return "Refers to non-existing file '{0}'".format(self.filename)
+
 class HashedFile(object):
     """file with checksums
     """
@@ -92,6 +109,33 @@ class HashedFile(object):
         @type: str of C{None}
         """
 
+    @classmethod
+    def from_file(cls, directory, filename, section=None, priority=None):
+        """create with values for an existing file
+
+        Create a C{HashedFile} object that refers to an already existing file.
+
+        @type  directory: str
+        @param directory: directory the file is located in
+
+        @type  filename: str
+        @param filename: filename
+
+        @type  section: str or C{None}
+        @param section: optional section as given in .changes files
+
+        @type  priority: str or C{None}
+        @param priority: optional priority as given in .changes files
+
+        @rtype:  L{HashedFile}
+        @return: C{HashedFile} object for the given file
+        """
+        path = os.path.join(directory, filename)
+        with open(path, 'r') as fh:
+            size = os.fstat(fh.fileno()).st_size
+            hashes = apt_pkg.Hashes(fh)
+        return cls(filename, size, hashes.md5, hashes.sha1, hashes.sha256, section, priority)
+
     def check(self, directory):
         """Validate hashes
 
@@ -103,25 +147,27 @@ class HashedFile(object):
         @raise InvalidHashException: hash mismatch
         """
         path = os.path.join(directory, self.filename)
-        fh = open(path, 'r')
 
-        size = os.stat(path).st_size
+        try:
+            with open(path) as fh:
+                size = os.fstat(fh.fileno()).st_size
+                hashes = apt_pkg.Hashes(fh)
+        except IOError as e:
+            if e.errno == errno.ENOENT:
+                raise FileDoesNotExist(self.filename)
+            raise
+
         if size != self.size:
             raise InvalidHashException(self.filename, 'size', self.size, size)
 
-        md5sum = apt_pkg.md5sum(fh)
-        if md5sum != self.md5sum:
-            raise InvalidHashException(self.filename, 'md5sum', self.md5sum, md5sum)
+        if hashes.md5 != self.md5sum:
+            raise InvalidHashException(self.filename, 'md5sum', self.md5sum, hashes.md5)
 
-        fh.seek(0)
-        sha1sum = apt_pkg.sha1sum(fh)
-        if sha1sum != self.sha1sum:
-            raise InvalidHashException(self.filename, 'sha1sum', self.sha1sum, sha1sum)
+        if hashes.sha1 != self.sha1sum:
+            raise InvalidHashException(self.filename, 'sha1sum', self.sha1sum, hashes.sha1)
 
-        fh.seek(0)
-        sha256sum = apt_pkg.sha256sum(fh)
-        if sha256sum != self.sha256sum:
-            raise InvalidHashException(self.filename, 'sha256sum', self.sha256sum, sha256sum)
+        if hashes.sha256 != self.sha256sum:
+            raise InvalidHashException(self.filename, 'sha256sum', self.sha256sum, hashes.sha256)
 
 def parse_file_list(control, has_priority_and_section):
     """Parse Files and Checksums-* fields
@@ -140,7 +186,7 @@ def parse_file_list(control, has_priority_and_section):
     """
     entries = {}
 
-    for line in control["Files"].split('\n'):
+    for line in control.get("Files", "").split('\n'):
         if len(line) == 0:
             continue
 
@@ -153,23 +199,25 @@ def parse_file_list(control, has_priority_and_section):
 
         entries[filename] = entry
 
-    for line in control["Checksums-Sha1"].split('\n'):
+    for line in control.get("Checksums-Sha1", "").split('\n'):
         if len(line) == 0:
             continue
         (sha1sum, size, filename) = line.split()
         entry = entries.get(filename, None)
-        if entry.get('size', None) != long(size):
+        if entry is None:
+            raise InvalidChangesException('{0} is listed in Checksums-Sha1, but not in Files.'.format(filename))
+        if entry is not None and entry.get('size', None) != long(size):
             raise InvalidChangesException('Size for {0} in Files and Checksum-Sha1 fields differ.'.format(filename))
         entry['sha1sum'] = sha1sum
 
-    for line in control["Checksums-Sha256"].split('\n'):
+    for line in control.get("Checksums-Sha256", "").split('\n'):
         if len(line) == 0:
             continue
         (sha256sum, size, filename) = line.split()
         entry = entries.get(filename, None)
         if entry is None:
-            raise InvalidChangesException('No sha256sum for {0}.'.format(filename))
-        if entry.get('size', None) != long(size):
+            raise InvalidChangesException('{0} is listed in Checksums-Sha256, but not in Files.'.format(filename))
+        if entry is not None and entry.get('size', None) != long(size):
             raise InvalidChangesException('Size for {0} in Files and Checksum-Sha256 fields differ.'.format(filename))
         entry['sha256sum'] = sha256sum
 
@@ -241,12 +289,20 @@ class Changes(object):
         """
         return self._signed_file.valid
 
+    @property
+    def signature_timestamp(self):
+        return self._signed_file.signature_timestamp
+
+    @property
+    def contents_sha1(self):
+        return self._signed_file.contents_sha1
+
     @property
     def architectures(self):
         """list of architectures included in the upload
         @type: list of str
         """
-        return self.changes['Architecture'].split()
+        return self.changes.get('Architecture', '').split()
 
     @property
     def distributions(self):
@@ -269,6 +325,13 @@ class Changes(object):
                 self._source = Source(self.directory, source_files, self._keyrings, self._require_signature)
         return self._source
 
+    @property
+    def sourceful(self):
+        """C{True} if the upload includes source
+        @type: bool
+        """
+        return "source" in self.architectures
+
     @property
     def source_name(self):
         """source package name
@@ -387,6 +450,11 @@ class Binary(object):
         @type: dict-like
         """
 
+    @classmethod
+    def from_file(cls, directory, filename):
+        hashed_file = HashedFile.from_file(directory, filename)
+        return cls(directory, hashed_file)
+
     @property
     def source(self):
         """get tuple with source package name and version
@@ -403,6 +471,10 @@ class Binary(object):
             version = self.control['Version']
         return (match.group('package'), version)
 
+    @property
+    def name(self):
+        return self.control['Package']
+
     @property
     def type(self):
         """package type ('deb' or 'udeb')
@@ -439,6 +511,10 @@ class Source(object):
                     raise InvalidSourceException("Multiple .dsc found ({0} and {1})".format(self._dsc_file.filename, f.filename))
                 else:
                     self._dsc_file = f
+
+        # make sure the hash for the dsc is valid before we use it
+        self._dsc_file.check(directory)
+
         dsc_file_path = os.path.join(directory, self._dsc_file.filename)
         data = open(dsc_file_path, 'r').read()
         self._signed_file = SignedFile(data, keyrings, require_signature)
@@ -447,8 +523,18 @@ class Source(object):
         @type: dict-like
         """
 
+        self.package_list = daklib.packagelist.PackageList(self.dsc)
+        """Information about packages built by the source.
+        @type: daklib.packagelist.PackageList
+        """
+
         self._files = None
 
+    @classmethod
+    def from_file(cls, directory, filename, keyrings, require_signature=True):
+        hashed_file = HashedFile.from_file(directory, filename)
+        return cls(directory, [hashed_file], keyrings, require_signature)
+
     @property
     def files(self):
         """dict mapping filenames to L{HashedFile} objects for additional source files
@@ -489,3 +575,10 @@ class Source(object):
         if len(fields) > 1:
             return fields[0]
         return "main"
+
+    @property
+    def filename(self):
+        """filename of .dsc file
+        @type: str
+        """
+        return self._dsc_file.filename