7 d0_blind_id_keygen = "./crypto-keygen-standalone"
8 d0_blind_id_d0pk = "key_0.d0pk"
10 def d0_blind_id_verify(sig, querystring, postdata=None): #-> (idfp, status)
15 data = postdata + "\0" + querystring
18 (dpipe_r, dpipe_w) = os.pipe()
19 (spipe_r, spipe_w) = os.pipe()
25 checker = subprocess.Popen([d0_blind_id_keygen, "-p", d0_blind_id_d0pk, "-d", "/dev/fd/%d" % (dpipe_r, ), "-s", "/dev/fd/%d" % (spipe_r, )], stdout=subprocess.PIPE, preexec_fn=closepipes)
31 # make them nonblocking
32 fcntl.fcntl(dpipe_w, fcntl.F_SETFL, fcntl.fcntl(dpipe_w, fcntl.F_GETFL) | os.O_NONBLOCK)
33 fcntl.fcntl(spipe_w, fcntl.F_SETFL, fcntl.fcntl(spipe_w, fcntl.F_GETFL) | os.O_NONBLOCK)
36 rpipes = [dpipe_w, spipe_w]
37 buffers = [data, base64.b64decode(sig)]
39 # generic nonblocking buffer loop
40 while len([p for p in rpipes if p != None]) != 0:
41 (readers, writers, errorers) = select.select([], [p for p in rpipes if p != None], [p for p in rpipes if p != None], None)
44 i = [j for j in range(len(rpipes)) if rpipes[j] == e]
53 i = [j for j in range(len(rpipes)) if rpipes[j] == w]
57 written = os.write(w, buffers[i])
59 buffers[i] = buffers[i][written:]
74 if len([x for x in buffers if x != None]) != 0:
75 raise Exception("could not write data to process")
77 # retrieve data from stdout
78 status = checker.stdout.readline().rstrip("\n")
79 idfp = checker.stdout.readline().rstrip("\n")
80 checker.stdout.close()
82 if checker.returncode != 0:
84 return (idfp, (status == "1"))
86 if __name__ == "__main__":
87 sig = "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"
89 postdata = "hello world"
90 (idfp, status) = d0_blind_id_verify(sig, querystring, postdata)
91 print(repr((idfp, status)))