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annotate liboctave/util/oct-base64.cc @ 17621:d41c8f96ed06

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avoid memory leaks in base_64_encode and base_64_decode (bug #40228) * data.cc (Fbase64_encode): Free array allocated by octave_base64_encode. * oct-base64.cc (octave_base64_decode): Free array allocated by base64_decode_alloc.
author John W. Eaton <jwe@octave.org>
date Wed, 09 Oct 2013 22:38:43 -0400
parents 648dabbb4c6b
children ea1a1eff036d
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1 /*
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2
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3 Copyright (C) 2012 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <algorithm>
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28
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29 #include <base64.h>
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30
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31 #include "Array.h"
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32 #include "oct-base64.h"
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33
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34 bool
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35 octave_base64_encode (const char *inc, const size_t inlen, char **out)
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36 {
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37 bool ret = false;
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38
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39 size_t outlen = base64_encode_alloc (inc, inlen, out);
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40
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41 if (! *out)
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42 {
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43 if (outlen == 0 && inlen != 0)
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44 (*current_liboctave_error_handler)
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45 ("base64_encode: input array too large");
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46 else
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47 (*current_liboctave_error_handler)
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48 ("base64_encode: memory allocation error");
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49 }
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50 else
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51 ret = true;
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52
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53 return ret;
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54 }
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55
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56 Array<double>
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57 octave_base64_decode (const std::string& str)
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58 {
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59 Array<double> retval;
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60
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61 const char *inc = &(str[0]);
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62
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63 char *out;
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64 size_t outlen;
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65
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66 bool ok = base64_decode_alloc (inc, str.length (), &out, &outlen);
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67
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68 if (! ok)
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69 (*current_liboctave_error_handler)
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70 ("base64_decode: input was not valid base64");
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71 else if (! out)
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72 (*current_liboctave_error_handler)
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73 ("base64_decode: memory allocation error");
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74 else
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75 {
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76 if ((outlen % (sizeof (double) / sizeof (char))) != 0)
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77 (*current_liboctave_error_handler)
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78 ("base64_decode: incorrect input size");
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79 else
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80 {
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81 octave_idx_type len = (outlen * sizeof (char)) / sizeof (double);
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82 retval.resize (dim_vector (1, len));
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83 double *dout = reinterpret_cast<double*> (out);
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84 std::copy (dout, dout + len, retval.fortran_vec ());
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85 ::free (out);
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86 }
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87 }
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88
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89 return retval;
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90 }
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91