Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/maskprocessor-0.73+git20170609.1708898/src/mp.c

FINAL RESULTS:

data/maskprocessor-0.73+git20170609.1708898/src/mp.c:115:5:  [4] (format) printf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
    printf (USAGE_MINI[i], progname);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:138:5:  [4] (format) printf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
    printf (USAGE_BIG[i], progname);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:224:19:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        case 'l': strcat (out_buf, mp_sys[0]);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:226:19:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        case 'u': strcat (out_buf, mp_sys[1]);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:228:19:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        case 'd': strcat (out_buf, mp_sys[2]);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:230:19:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        case 's': strcat (out_buf, mp_sys[3]);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:232:19:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        case 'a': strcat (out_buf, mp_sys[4]);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:269:9:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        strcat (out_buf, s);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:275:9:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
        strcat (out_buf, s);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:392:15:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
  while ((c = getopt_long (argc, argv, "Vhi:q:s:l:o:1:2:3:4:r:", long_options, &option_index)) != -1)
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:34:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char  cs_buf[CHARSIZ];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:35:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char  cs_uniq[CHARSIZ];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:44:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char buf[OUTBUFSZ + SPARE];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:208:32:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
static size_t mp_expand (const char *in_buf, const size_t in_len, char *out_buf, char *mp_sys[6], int hex_charset)
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:208:67:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
static size_t mp_expand (const char *in_buf, const size_t in_len, char *out_buf, char *mp_sys[6], int hex_charset)
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:208:82:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
static size_t mp_expand (const char *in_buf, const size_t in_len, char *out_buf, char *mp_sys[6], int hex_charset)
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:234:19:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
        case 'b': memcpy (out_buf, mp_sys[5], 256);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:264:9:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
        char s[2] = { 0, 0 };
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:273:9:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
        char s[2] = { p0, 0 };
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:400:55:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
      case IDX_SEQ_MAX:           seq_max           = atoi (optarg);  break;
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:401:55:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
      case IDX_OCCUR_MAX:         occur_max         = atoi (optarg);  break;
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:509:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char *mp_sys[6];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:518:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char *mp_user[4];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:527:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char donec[CHARSIZ]; memset (donec, 0, CHARSIZ);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:564:19:  [2] (misc) fopen:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
    if ((fp_out = fopen (output_file, "ab")) == NULL)
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:615:19:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
        case 'b': memcpy (css[css_cnt].cs_buf,  mp_sys[5], 256);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:662:9:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
        char s[2] = { 0, 0 };
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:671:9:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
        char s[2] = { p0, 0 };
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:760:21:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    increment_min = atoi (s_min);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:761:21:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    increment_max = atoi (s_max);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:812:5:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
    char word_buf[PW_MAX];
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:852:7:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
      memcpy (out->buf + out->pos, word_buf, word_len);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:931:7:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
      memcpy (out->buf + out->pos, word_buf, word_len);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:171:22:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  size_t input_len = strlen (input_buf);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:236:19:  [1] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused). Risk is low because the
  source is a constant character.
        case '?': strcat (out_buf, "?");
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:280:10:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  return strlen (out_buf);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:548:54:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if (custom_charset_1) mp_expand (custom_charset_1, strlen (custom_charset_1), mp_user[0], mp_sys, hex_charset);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:549:54:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if (custom_charset_2) mp_expand (custom_charset_2, strlen (custom_charset_2), mp_user[1], mp_sys, hex_charset);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:550:54:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if (custom_charset_3) mp_expand (custom_charset_3, strlen (custom_charset_3), mp_user[2], mp_sys, hex_charset);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:551:54:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if (custom_charset_4) mp_expand (custom_charset_4, strlen (custom_charset_4), mp_user[3], mp_sys, hex_charset);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:578:21:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  size_t line_len = strlen (line_buf);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:684:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    int start_at_len = strlen (start_at);
data/maskprocessor-0.73+git20170609.1708898/src/mp.c:712:23:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    int stop_at_len = strlen (stop_at);

ANALYSIS SUMMARY:

Hits = 43
Lines analyzed = 963 in approximately 0.03 seconds (29761 lines/second)
Physical Source Lines of Code (SLOC) = 723
Hits@level = [0]  27 [1]  10 [2]  23 [3]   1 [4]   9 [5]   0
Hits@level+ = [0+]  70 [1+]  43 [2+]  33 [3+]  10 [4+]   9 [5+]   0
Hits/KSLOC@level+ = [0+] 96.8188 [1+] 59.4744 [2+] 45.6432 [3+] 13.8313 [4+] 12.4481 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.