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/dvorak7min-1.6.1+repack/lessons.h
Examining data/dvorak7min-1.6.1+repack/lessons.c
Examining data/dvorak7min-1.6.1+repack/dvorak7min.c

FINAL RESULTS:

data/dvorak7min-1.6.1+repack/dvorak7min.c:147:31:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
      helpInterval = 10000 + (random() % 10000);
data/dvorak7min-1.6.1+repack/dvorak7min.c:148:19:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
      deviation = random() % 300;
data/dvorak7min-1.6.1+repack/dvorak7min.c:159:22:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
      helpInterval = random() % 1000;
data/dvorak7min-1.6.1+repack/dvorak7min.c:160:20:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
      helpLength = random() % 8;
data/dvorak7min-1.6.1+repack/dvorak7min.c:162:16:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
   deviation = random() % 300;      
data/dvorak7min-1.6.1+repack/dvorak7min.c:165:9:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
   if ((random() % 26) == 0) {
data/dvorak7min-1.6.1+repack/dvorak7min.c:628:28:  [3] (random) random:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
   helpInterval = 10000 + (random() % 10000);
data/dvorak7min-1.6.1+repack/dvorak7min.c:706:11:  [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.
      c = getopt_long(argc, argv, "HVnbfuk", long_opts, &opt_index);
data/dvorak7min-1.6.1+repack/dvorak7min.c:195:11:  [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).
   file = fopen (fileName, "r");
data/dvorak7min-1.6.1+repack/dvorak7min.c:547:5:  [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 buf[255];
data/dvorak7min-1.6.1+repack/dvorak7min.c:587:15:  [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).
        num = atoi (buf);
data/dvorak7min-1.6.1+repack/dvorak7min.c:222:11:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      c = fgetc (file);
data/dvorak7min-1.6.1+repack/dvorak7min.c:397:49:  [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).
    this_page_size  = i ? i - this_page_start : strlen(this_page_start);
data/dvorak7min-1.6.1+repack/dvorak7min.c:508:55:  [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).
	   this_page_size  = next ? next - this_page_start : strlen(this_page_start);

ANALYSIS SUMMARY:

Hits = 14
Lines analyzed = 1375 in approximately 0.11 seconds (12706 lines/second)
Physical Source Lines of Code (SLOC) = 1131
Hits@level = [0]   3 [1]   3 [2]   3 [3]   8 [4]   0 [5]   0
Hits@level+ = [0+]  17 [1+]  14 [2+]  11 [3+]   8 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 15.0309 [1+] 12.3784 [2+] 9.72591 [3+] 7.07339 [4+]   0 [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.