Add testing upload.cgi with download capability.

scripts/upload.cgi/upload.test.cgi

@@ -0,0 +1,165 @@
+#!/usr/bin/python
+#
+# CGI script to handle file updates for the rpms CVS repository. There
+# is nothing really complex here other than tedious checking of our
+# every step along the way...
+#
+# License: GPL
+
+import os
+import sys
+import cgi
+import tempfile
+import grp
+import urllib2
+try:
+    import hashlib
+    md5_constructor = hashlib.md5
+except ImportError:
+    import md5
+    md5_constructor = md5.new
+
+# Reading buffer size
+BUFFER_SIZE = 4096
+
+# We check modules exist from this dircetory
+CVSREPO = '/cvs/pkgs/rpms'
+
+# Lookaside cache directory
+CACHE_DIR = '/srv/cache/lookaside/pkgs'
+
+# Fedora Packager Group
+PACKAGER_GROUP = 'packager'
+
+def send_error(text):
+    print text
+    sys.exit(1)
+
+def check_form(form, var):
+    ret = form.getvalue(var, None)
+    if ret is None:
+        send_error('Required field "%s" is not present.' % var)
+    if isinstance(ret, list):
+        send_error('Multiple values given for "%s". Aborting.' % var)
+    return ret
+
+def check_auth(username):
+    authenticated = False
+    try:
+        if username in grp.getgrnam(PACKAGER_GROUP)[3]:
+            authenticated = True
+    except KeyError:
+        pass
+    return authenticated
+
+def main():
+    os.umask(002)
+
+    username = os.environ.get('SSL_CLIENT_S_DN_CN', None)
+    if not check_auth(username):
+        print 'Status: 403 Forbidden'
+        print 'Content-type: text/plain'
+        print
+        print 'You must connect with a valid certificate and be in the %s group to upload.' % PACKAGER_GROUP
+        sys.exit(0)
+
+    print 'Content-Type: text/plain'
+    print
+
+    assert os.environ['REQUEST_URI'].split('/')[1] == 'repo'
+
+    form = cgi.FieldStorage()
+    name = check_form(form, 'name')
+    md5sum = check_form(form, 'md5sum')
+
+    action = None
+    upload_file = None
+    filename = None
+
+    # Is this a submission or a test?
+    # in a test, we don't get a file, just a filename.
+    # In a submission, we don;t get a filename, just the file.
+    if form.has_key('filename'):
+        action = 'check'
+        filename = check_form(form, 'filename')
+        filename = os.path.basename(filename)
+        print >> sys.stderr, '[username=%s] Checking file status: NAME=%s FILENAME=%s MD5SUM=%s' % (username, name, filename, md5sum)
+    else:
+        action = 'upload'
+        if form.has_key('file'):
+            upload_file = form['file']
+            if not upload_file.file:
+                send_error('No file given for upload. Aborting.')
+            filename = os.path.basename(upload_file.filename)
+        elif form.has_key('url'):
+            url = form['url']
+            try:
+                upload_file = urllib2.urlopen(url)
+            except urllib2.HTTPError, e:
+                send_error('Could not download %s: %s' % (url, e))
+            filename = os.path.basename(upload_file.geturl())
+        else:
+            send_error('Required field "file" is not present.')
+        print >> sys.stderr, '[username=%s] Processing upload request: NAME=%s FILENAME=%s MD5SUM=%s' % (username, name, filename, md5sum)
+
+    module_dir = os.path.join(CACHE_DIR, name)
+    md5_dir =  os.path.join(module_dir, filename, md5sum)
+
+    # first test if the module really exists
+    cvs_dir = os.path.join(CVSREPO, name)
+    if not os.path.isdir(cvs_dir):
+        print >> sys.stderr, '[username=%s] Unknown module: %s' % (username, name)
+        send_error('Module "%s" does not exist!' % name)
+        
+    # try to see if we already have this file...
+    dest_file = os.path.join(md5_dir, filename)
+    if os.path.exists(dest_file):
+        if action == 'check':
+            print 'Available'
+        else:
+            upload_file.file.close()
+            dest_file_stat = os.stat(dest_file)
+            print 'File %s already exists' % filename
+            print 'File: %s Size: %d' % (dest_file, dest_file_stat.st_size)
+        sys.exit(0)
+    elif action == 'check':
+        print 'Missing'
+        sys.exit(0)
+
+    # check that all directories are in place
+    if not os.path.isdir(module_dir):
+        os.makedirs(module_dir, 02775)
+
+    # grab a temporary filename and dump our file in there
+    tempfile.tempdir = module_dir
+    tmpfile = tempfile.mkstemp(md5sum)
+    tmpfd = open(tmpfile, 'w')
+
+    # now read the whole file in
+    m = md5_constructor()
+    filesize = 0
+    while True:
+        data = upload_file.file.read(BUFFER_SIZE)
+        if not data:
+            break
+        tmpfd.write(data)
+        m.update(data)
+        filesize += len(data)
+
+    # now we're done reading, check the MD5 sum of what we got
+    tmpfd.close()
+    check_md5sum = m.hexdigest()
+    if md5sum != check_md5sum:
+        send_error("MD5 check failed. Received %s instead of %s." % (check_md5sum, md5sum))
+
+    # wow, even the MD5SUM matches. make sure full path is valid now
+    if not os.path.isdir(md5_dir):
+        os.makedirs(md5_dir, 02775)
+        print >> sys.stderr, '[username=%s] mkdir %s' % (username, md5_dir)
+
+    os.rename(tmpfile, dest_file)
+    print >> sys.stderr, '[username=%s] Stored %s (%d bytes)' % (username, dest_file, filesize)
+    print 'File %s size %d MD5 %s stored OK' % (filename, filesize, md5sum)
+
+if __name__ == '__main__':
+    main()