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/bwbar-1.2.3/bwbar.c

FINAL RESULTS:

data/bwbar-1.2.3/bwbar.c:295:2:  [4] (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).
	strcpy(text_file, directory);
data/bwbar-1.2.3/bwbar.c:297:2:  [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(text_file, tmp_char);
data/bwbar-1.2.3/bwbar.c:301:2:  [4] (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).
	strcpy(graphics_file, directory);
data/bwbar-1.2.3/bwbar.c:303:2:  [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(graphics_file, tmp_char);
data/bwbar-1.2.3/bwbar.c:311:3:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
  sprintf(t_tmp, "%s.tmp", text_file);
data/bwbar-1.2.3/bwbar.c:312:3:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
  sprintf(g_tmp, "%s.tmp", graphics_file);
data/bwbar-1.2.3/bwbar.c:228:18:  [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 ( (opt = getopt_long(argc, argv, "iof:p:t:x:y:b:kMGhd:", longopts, NULL)) != -1 ) {
data/bwbar-1.2.3/bwbar.c:200:5:  [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 name[8];
data/bwbar-1.2.3/bwbar.c:246:18:  [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).
      interval = atoi(optarg);
data/bwbar-1.2.3/bwbar.c:249:15:  [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).
      width = atoi(optarg);
data/bwbar-1.2.3/bwbar.c:252:16:  [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).
      height = atoi(optarg);
data/bwbar-1.2.3/bwbar.c:255:16:  [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).
      border = atoi(optarg);
data/bwbar-1.2.3/bwbar.c:327:11:  [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).
    pnd = fopen("/proc/net/dev", "r");
data/bwbar-1.2.3/bwbar.c:371:14:  [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).
      ubar = fopen(t_tmp, "w");
data/bwbar-1.2.3/bwbar.c:372:18:  [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).
      pngmaker = fopen(g_tmp, "w");
data/bwbar-1.2.3/bwbar.c:39:10:  [1] (buffer) getc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    ch = getc(f);
data/bwbar-1.2.3/bwbar.c:294:21:  [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).
	text_file = malloc(strlen(text_file) + strlen(directory) + 5);
data/bwbar-1.2.3/bwbar.c:294:41:  [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).
	text_file = malloc(strlen(text_file) + strlen(directory) + 5);
data/bwbar-1.2.3/bwbar.c:296:2:  [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.
	strcat(text_file, "/");
data/bwbar-1.2.3/bwbar.c:300:25:  [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).
	graphics_file = malloc(strlen(graphics_file) + strlen(directory) + 5);
data/bwbar-1.2.3/bwbar.c:300:49:  [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).
	graphics_file = malloc(strlen(graphics_file) + strlen(directory) + 5);
data/bwbar-1.2.3/bwbar.c:302:2:  [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.
	strcat(graphics_file, "/");
data/bwbar-1.2.3/bwbar.c:305:18:  [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).
  t_tmp = malloc(strlen(text_file) + 5);
data/bwbar-1.2.3/bwbar.c:306:18:  [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).
  g_tmp = malloc(strlen(graphics_file) + 5);

ANALYSIS SUMMARY:

Hits = 24
Lines analyzed = 393 in approximately 0.04 seconds (9821 lines/second)
Physical Source Lines of Code (SLOC) = 311
Hits@level = [0]   4 [1]   9 [2]   8 [3]   1 [4]   6 [5]   0
Hits@level+ = [0+]  28 [1+]  24 [2+]  15 [3+]   7 [4+]   6 [5+]   0
Hits/KSLOC@level+ = [0+] 90.0322 [1+] 77.1704 [2+] 48.2315 [3+] 22.508 [4+] 19.2926 [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.