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/randomsound-0.2/asoundrunner.h
Examining data/randomsound-0.2/bitbuffer.c
Examining data/randomsound-0.2/bitbuffer.h
Examining data/randomsound-0.2/debias.c
Examining data/randomsound-0.2/debias.h
Examining data/randomsound-0.2/randomsound.c
Examining data/randomsound-0.2/asoundrunner.c

FINAL RESULTS:

data/randomsound-0.2/asoundrunner.c:63:5:  [4] (shell) execlp:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
    execlp("arecord", "arecord", "-c", "1", "-f", "S16_LE", "-r", SAMPLERATESTR, "-t", "raw", NULL);
data/randomsound-0.2/randomsound.c:184:17:  [3] (buffer) getopt:
  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 ((opt = getopt(argc, argv, ":hDp:vVm:M:b:d:")) != -1) {
data/randomsound-0.2/asoundrunner.c:53:15:  [2] (misc) open:
  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).
    sparefd = open("/dev/null", O_RDWR);
data/randomsound-0.2/randomsound.c:202:22:  [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).
      minwatermark = atoi(optarg);
data/randomsound-0.2/randomsound.c:205:22:  [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).
      maxwatermark = atoi(optarg);
data/randomsound-0.2/randomsound.c:208:20:  [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).
      buffersize = atoi(optarg);
data/randomsound-0.2/randomsound.c:211:21:  [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).
      depositsize = atoi(optarg);
data/randomsound-0.2/randomsound.c:260:14:  [2] (misc) open:
  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).
  randomfd = open("/dev/random", O_RDWR);
data/randomsound-0.2/randomsound.c:283:16:  [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((file = fopen(pidfile, "r")) != NULL) {
data/randomsound-0.2/randomsound.c:293:16:  [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((file = fopen(pidfile, "w")) == NULL) {
data/randomsound-0.2/asoundrunner.c:78:19:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  int readbytes = read(arecord_read_fd, buffer, SAMPLERATE*5);

ANALYSIS SUMMARY:

Hits = 11
Lines analyzed = 713 in approximately 0.03 seconds (26252 lines/second)
Physical Source Lines of Code (SLOC) = 533
Hits@level = [0]  30 [1]   1 [2]   8 [3]   1 [4]   1 [5]   0
Hits@level+ = [0+]  41 [1+]  11 [2+]  10 [3+]   2 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 76.9231 [1+] 20.6379 [2+] 18.7617 [3+] 3.75235 [4+] 1.87617 [5+]   0
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.