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/chirp-20200227+py3+20200213/tools/serialsniff.c

FINAL RESULTS:

data/chirp-20200227+py3+20200213/tools/serialsniff.c:380:7:  [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, "A:B:d:l:q",
data/chirp-20200227+py3+20200213/tools/serialsniff.c:83:2:  [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 path[1024];
data/chirp-20200227+py3+20200213/tools/serialsniff.c:84:2:  [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 name[1024];
data/chirp-20200227+py3+20200213/tools/serialsniff.c:170:3:  [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[4096];
data/chirp-20200227+py3+20200213/tools/serialsniff.c:257:13:  [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).
	path->fd = open(serpath, O_RDWR);
data/chirp-20200227+py3+20200213/tools/serialsniff.c:306:2:  [2] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused). Risk is low because the source is a constant string.
	strcpy(path->path, "SOCKET");
data/chirp-20200227+py3+20200213/tools/serialsniff.c:323:20:  [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).
	path->rawlog_fd = open(filename, O_WRONLY | O_CREAT, 0644);
data/chirp-20200227+py3+20200213/tools/serialsniff.c:420:14:  [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).
			total_hex=atoi(optarg);
data/chirp-20200227+py3+20200213/tools/serialsniff.c:153:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		ret = read(fd, &(buf[count]), len - count);
data/chirp-20200227+py3+20200213/tools/serialsniff.c:245:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy(path->path,ptsname_path,sizeof(path->path) - 1);
data/chirp-20200227+py3+20200213/tools/serialsniff.c:261:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy(path->path, serpath, sizeof(path->path));
data/chirp-20200227+py3+20200213/tools/serialsniff.c:359:2:  [1] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused). Risk is low because the source is a constant character.
	strcpy(pathA.name, "A");
data/chirp-20200227+py3+20200213/tools/serialsniff.c:360:2:  [1] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused). Risk is low because the source is a constant character.
	strcpy(pathB.name, "B");
data/chirp-20200227+py3+20200213/tools/serialsniff.c:408:4:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
			strncpy(pathA.name, optarg, sizeof(pathA.name));
data/chirp-20200227+py3+20200213/tools/serialsniff.c:412:4:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
			strncpy(pathB.name, optarg, sizeof(pathB.name));

ANALYSIS SUMMARY:

Hits = 15
Lines analyzed = 440 in approximately 0.07 seconds (6368 lines/second)
Physical Source Lines of Code (SLOC) = 296
Hits@level = [0]  21 [1]   7 [2]   7 [3]   1 [4]   0 [5]   0
Hits@level+ = [0+]  36 [1+]  15 [2+]   8 [3+]   1 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 121.622 [1+] 50.6757 [2+] 27.027 [3+] 3.37838 [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.