[tor-bugs] #5090 [Tor Client]: parse_config_line_from_str accepts broken hex values

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#5090: parse_config_line_from_str accepts broken hex values
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 Reporter:  emanchado   |          Owner:              
     Type:  defect      |         Status:  needs_review
 Priority:  minor       |      Milestone:              
Component:  Tor Client  |        Version:              
 Keywords:  unittest    |         Parent:              
   Points:              |   Actualpoints:              
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Changes (by flupzor):

  * status:  new => needs_review


Comment:

 Replying to [ticket:5090 emanchado]:
 > parse_config_line_from_str happily accepts a broken hex value like
 "\xg4" and produces a broken value.
 >
 > Expected behaviour: parse_config_line_from_str returns NULL as it does
 with broken octal values.

 Attached diff should fix this.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5090#comment:2>
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