root / snf-image-helper / inject-files.py @ c03b6c45
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1 | 22a2e378 | Nikos Skalkotos | #!/usr/bin/env python
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2 | 22a2e378 | Nikos Skalkotos | |
3 | 22a2e378 | Nikos Skalkotos | """Inject files into a directory
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4 | 22a2e378 | Nikos Skalkotos |
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5 | 22a2e378 | Nikos Skalkotos | This program injects files into a target directory.
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6 | 22a2e378 | Nikos Skalkotos | The files are passed to the program through a JSON string either read from a
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7 | 22a2e378 | Nikos Skalkotos | file or from standard input.
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8 | 22a2e378 | Nikos Skalkotos |
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9 | 22a2e378 | Nikos Skalkotos | """
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10 | 22a2e378 | Nikos Skalkotos | |
11 | 22a2e378 | Nikos Skalkotos | import sys |
12 | 22a2e378 | Nikos Skalkotos | import os |
13 | 22a2e378 | Nikos Skalkotos | import json |
14 | 22a2e378 | Nikos Skalkotos | import datetime |
15 | 22a2e378 | Nikos Skalkotos | import base64 |
16 | c03b6c45 | Nikos Skalkotos | import struct |
17 | 22a2e378 | Nikos Skalkotos | from optparse import OptionParser |
18 | 22a2e378 | Nikos Skalkotos | |
19 | 22a2e378 | Nikos Skalkotos | |
20 | 22a2e378 | Nikos Skalkotos | def timestamp(): |
21 | 22a2e378 | Nikos Skalkotos | now = datetime.datetime.now() |
22 | 22a2e378 | Nikos Skalkotos | current_time = now.strftime("%Y%m%d.%H%M%S")
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23 | 22a2e378 | Nikos Skalkotos | return current_time
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24 | 22a2e378 | Nikos Skalkotos | |
25 | 22a2e378 | Nikos Skalkotos | def parse_arguments(input_args): |
26 | 22a2e378 | Nikos Skalkotos | usage = "Usage: %prog [options] <target>"
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27 | 22a2e378 | Nikos Skalkotos | parser = OptionParser(usage=usage) |
28 | 22a2e378 | Nikos Skalkotos | parser.add_option("-i", "--input", |
29 | 22a2e378 | Nikos Skalkotos | action="store",type='string', dest="input_file", |
30 | 22a2e378 | Nikos Skalkotos | help="get input from FILE instead of stdin",
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31 | 22a2e378 | Nikos Skalkotos | metavar="FILE")
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32 | c03b6c45 | Nikos Skalkotos | parser.add_option("-d", "--decode", |
33 | c03b6c45 | Nikos Skalkotos | action="store_true", dest="decode", default=False, |
34 | c03b6c45 | Nikos Skalkotos | help="decode files under target and create manifest")
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35 | 22a2e378 | Nikos Skalkotos | |
36 | 22a2e378 | Nikos Skalkotos | opts, args = parser.parse_args(input_args) |
37 | 22a2e378 | Nikos Skalkotos | |
38 | 22a2e378 | Nikos Skalkotos | if len(args) != 1: |
39 | 22a2e378 | Nikos Skalkotos | parser.error('target is missing')
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40 | 22a2e378 | Nikos Skalkotos | |
41 | 22a2e378 | Nikos Skalkotos | target = args[0]
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42 | 22a2e378 | Nikos Skalkotos | if not os.path.isdir(target): |
43 | 22a2e378 | Nikos Skalkotos | parser.error('target is not a directory')
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44 | 22a2e378 | Nikos Skalkotos | |
45 | 22a2e378 | Nikos Skalkotos | input_file = opts.input_file |
46 | 22a2e378 | Nikos Skalkotos | if input_file is None: |
47 | 22a2e378 | Nikos Skalkotos | input_file = sys.stdin |
48 | 22a2e378 | Nikos Skalkotos | else:
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49 | 22a2e378 | Nikos Skalkotos | if not os.path.isfile(input_file): |
50 | 22a2e378 | Nikos Skalkotos | parser.error('input file does not exist')
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51 | 22a2e378 | Nikos Skalkotos | input_file = open(input_file,'r') |
52 | 22a2e378 | Nikos Skalkotos | |
53 | c03b6c45 | Nikos Skalkotos | return (input_file, target, opts.decode)
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54 | 22a2e378 | Nikos Skalkotos | |
55 | 22a2e378 | Nikos Skalkotos | |
56 | 22a2e378 | Nikos Skalkotos | def main(): |
57 | c03b6c45 | Nikos Skalkotos | (input_file, target, decode) = parse_arguments(sys.argv[1:])
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58 | 22a2e378 | Nikos Skalkotos | |
59 | 2545cdc5 | Nikos Skalkotos | files = json.load(input_file) |
60 | c03b6c45 | Nikos Skalkotos | |
61 | c03b6c45 | Nikos Skalkotos | if decode:
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62 | c03b6c45 | Nikos Skalkotos | manifest = open(target + '/manifest', 'w') |
63 | c03b6c45 | Nikos Skalkotos | |
64 | c03b6c45 | Nikos Skalkotos | count = 0
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65 | 22a2e378 | Nikos Skalkotos | for f in files: |
66 | c03b6c45 | Nikos Skalkotos | count += 1
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67 | c03b6c45 | Nikos Skalkotos | owner = f['owner'] if 'owner' in f else "root" |
68 | c03b6c45 | Nikos Skalkotos | group = f['group'] if 'group' in f else "root" |
69 | c03b6c45 | Nikos Skalkotos | mode = f['mode'] if 'mode' in f else 288 # 440 in oct = 288 in dec |
70 | 22a2e378 | Nikos Skalkotos | |
71 | c03b6c45 | Nikos Skalkotos | filepath = f['path'] if not decode else str(count) |
72 | c03b6c45 | Nikos Skalkotos | filepath = target + "/" + filepath
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73 | c03b6c45 | Nikos Skalkotos | |
74 | c03b6c45 | Nikos Skalkotos | if os.path.lexists(filepath):
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75 | c03b6c45 | Nikos Skalkotos | backup_file = filepath + '.bak.' + timestamp()
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76 | c03b6c45 | Nikos Skalkotos | os.rename(filepath, backup_file) |
77 | c03b6c45 | Nikos Skalkotos | |
78 | c03b6c45 | Nikos Skalkotos | parentdir = os.path.dirname(filepath) |
79 | 22a2e378 | Nikos Skalkotos | if not os.path.exists(parentdir): |
80 | 22a2e378 | Nikos Skalkotos | os.makedirs(parentdir) |
81 | 22a2e378 | Nikos Skalkotos | |
82 | c03b6c45 | Nikos Skalkotos | newfile = open(filepath, 'w') |
83 | 22a2e378 | Nikos Skalkotos | newfile.write(base64.b64decode(f['contents']))
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84 | 22a2e378 | Nikos Skalkotos | newfile.close() |
85 | c03b6c45 | Nikos Skalkotos | |
86 | c03b6c45 | Nikos Skalkotos | if decode:
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87 | c03b6c45 | Nikos Skalkotos | manifest.write(str(count))
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88 | c03b6c45 | Nikos Skalkotos | manifest.write(struct.pack('B', 0)) |
89 | c03b6c45 | Nikos Skalkotos | manifest.write(owner) |
90 | c03b6c45 | Nikos Skalkotos | manifest.write(struct.pack('B', 0)) |
91 | c03b6c45 | Nikos Skalkotos | manifest.write(group) |
92 | c03b6c45 | Nikos Skalkotos | manifest.write(struct.pack('B', 0)) |
93 | c03b6c45 | Nikos Skalkotos | manifest.write("%o" % mode)
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94 | c03b6c45 | Nikos Skalkotos | manifest.write(struct.pack('B', 0)) |
95 | c03b6c45 | Nikos Skalkotos | manifest.write(f['path'])
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96 | c03b6c45 | Nikos Skalkotos | manifest.write(struct.pack('B', 0)) |
97 | c03b6c45 | Nikos Skalkotos | |
98 | c03b6c45 | Nikos Skalkotos | sys.stderr.write('Files were injected successfully\n')
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99 | c03b6c45 | Nikos Skalkotos | |
100 | c03b6c45 | Nikos Skalkotos | if decode:
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101 | c03b6c45 | Nikos Skalkotos | manifest.close() |
102 | 22a2e378 | Nikos Skalkotos | |
103 | 22a2e378 | Nikos Skalkotos | input_file.close() |
104 | 22a2e378 | Nikos Skalkotos | return 0 |
105 | 22a2e378 | Nikos Skalkotos | |
106 | 22a2e378 | Nikos Skalkotos | if __name__ == "__main__": |
107 | 22a2e378 | Nikos Skalkotos | sys.exit(main()) |
108 | 22a2e378 | Nikos Skalkotos | |
109 | 22a2e378 | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |