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Changes In Branch crypt Through [1b5a5d3a6e] Excluding Merge-Ins

This is equivalent to a diff from 445ea184ae to 1b5a5d3a6e

2016-11-08
06:20
Merged crypt branch check-in: 0e2bee049a user: matt tags: trunk
06:18
Added escape of \n \r as option to session:apply-type-preference Leaf check-in: 7592869969 user: matt tags: crypt
2016-10-20
17:53
Replace external openssl call with "crypt" egg.

The OpenSSL call was using the old UNIX crypt DES password hashing, which is very weak. Crypt will default to a more sensible mechanism (Blowfish, but in the future could transparently switch).

Old passwords will continue to work, because the crypt egg detects DES salts and happily hashes them. When creating new passwords, they will be hashed using the modern algorithm.

The OpenSSL call passed the password to the shell, so an onlooker on the server could see it in plaintext. It also neglected to escape the password for the shell, resulting in a command injection vulnerability. check-in: 1b5a5d3a6e user: sjamaan tags: crypt

17:50
Create new branch named "crypt" Closed-Leaf check-in: 1241e8996c user: sjamaan tags: crypt
2016-09-25
17:10
Added conversion to s:session-var-get. WARNING: Need to use 'raw in many cases check-in: 445ea184ae user: matt tags: trunk
2016-09-24
07:07
Added recovery from bad form. but it is broken and I don't know why. Still seems rare ... check-in: 44c407806c user: matt tags: trunk

Modified misc-stml.scm from [1a4eccad68] to [fb9cd24234].

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;;  PURPOSE.

;;======================================================================
;; dumbobj helpers
;;======================================================================

(declare (unit misc-stml))
(use (prefix crypt c:))
(use regex)
(use dbi)
(import (prefix dbi dbi:))

;; given a list of symbols give the count of the matching symbol
;; l => '(a b c)  (dumobj:indx a 'b) => 1
(define (s:get-fieldnum lst field-name)
  (let loop ((head (car lst))
             (tail (cdr lst))
             (fnum 0))
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(define (session:make-rand-string len)
  (let loop ((res "")
             (n   1))
    (if (> n len) res
        (loop (string-append res (session:get-rand-char))
              (+ n 1)))))

;; openssl passwd -crypt -salt xx password
;; Rely on crypt egg's default settings being secure enough, accept
;; backwards-compatible OpenSSL crypt passwords too.
;;
(define (s:crypt-passwd pw s)
  (let* ((salt (if s s (session:make-rand-string 2)))
	 (inp (open-input-pipe 
               ;;(string-append "echo " pw " | mkpasswd -S " salt " -s")))
	       ;; (conc "mkpasswd " pw " " salt)
	       (conc "openssl passwd -crypt -salt " salt " " pw)
  (c:crypt pw (or s (c:crypt-gensalt))))
               ))
         (res (read-line inp)))
    (close-input-port inp)
    res))

(define (s:password-match? password crypted)
  (let* ((salt (substring crypted 0 2))
         (pcrypted (s:crypt-passwd password salt)))
    (s:log "INFO: pcrypted=" pcrypted " crypted=" crypted)
    (and (string? password)
         (string? pcrypted)
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Modified tests/test.scm from [2d90dc1820] to [7deafec480].

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          ;; (print "loading " l)
          (load l)
          (loop (read-line fh)))))
  (close-input-port fh))

;; Should have poll:poll defined now.
(test "Make a random string" 2 (string-length (session:make-rand-string 2)))
(test "Create a encrypted password" "abQ9KY.KfrYrc" (s:crypt-passwd "foo" "ab"))
(test "Create an encrypted password using DES (backwards compat)" "abQ9KY.KfrYrc" (s:crypt-passwd "foo" "ab"))
(test "Create an encrypted password using Blowfish" "$2a$12$GyoKHX/UOxMLGtwdSTr7EOF9KQzlyyyRqFTKx1YvLA3sMukbV4WBC" (s:crypt-passwd "foo" "$2a$12$GyoKHX/UOxMLGtwdSTr7EO"))

(test "s:any->string on a hash-table" "#<hash-table>" (s:any->string (make-hash-table)))

(define select-list
  '((a b c)(d (e f g)(h i j #t))))
(define result '("<SELECT name=\"efg\">" 
		 ((("<OPTION label=\"a\" value=\"b\">c</OPTION>")
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