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/ipwatchd-1.2.1/src/message.c
Examining data/ipwatchd-1.2.1/src/devinfo.c
Examining data/ipwatchd-1.2.1/src/ipwatchd.c
Examining data/ipwatchd-1.2.1/src/analyse.c
Examining data/ipwatchd-1.2.1/src/daemonize.c
Examining data/ipwatchd-1.2.1/src/config.c
Examining data/ipwatchd-1.2.1/src/ipwatchd.h
Examining data/ipwatchd-1.2.1/src/signal.c
Examining data/ipwatchd-1.2.1/src/genarp.c

FINAL RESULTS:

data/ipwatchd-1.2.1/src/daemonize.c:171:6:  [5] (race) readlink:
  This accepts filename arguments; if an attacker can move those files or
  change the link content, a race condition results. Also, it does not
  terminate with ASCII NUL. (CWE-362, CWE-20). Reconsider approach.
	if (readlink (proc_this, proc_this, PATH_MAX) <= 0)
data/ipwatchd-1.2.1/src/daemonize.c:205:6:  [5] (race) readlink:
  This accepts filename arguments; if an attacker can move those files or
  change the link content, a race condition results. Also, it does not
  terminate with ASCII NUL. (CWE-362, CWE-20). Reconsider approach.
	if (readlink (proc_pidfile, proc_pidfile, PATH_MAX) <= 0)
data/ipwatchd-1.2.1/src/analyse.c:209:9:  [4] (shell) system:
  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.
			rv = system (command);
data/ipwatchd-1.2.1/src/config.c:232:4:  [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 (config.script, value);
data/ipwatchd-1.2.1/src/devinfo.c:54:2:  [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 (ifr.ifr_name, p_dev);
data/ipwatchd-1.2.1/src/ipwatchd.c:96:5:  [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 (config_file, optarg);
data/ipwatchd-1.2.1/src/message.c:50:2:  [4] (format) vsnprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
	vsnprintf(msg, IPWD_MSG_BUFSIZ, format, arguments);
data/ipwatchd-1.2.1/src/ipwatchd.c:74:7:  [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, "c:dthv", long_options, &option_index);
data/ipwatchd-1.2.1/src/analyse.c:52:2:  [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 rcv_sip[IPWD_MAX_DEVICE_ADDRESS_LEN];
data/ipwatchd-1.2.1/src/analyse.c:68:2:  [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 rcv_smac[IPWD_MAX_DEVICE_ADDRESS_LEN];
data/ipwatchd-1.2.1/src/analyse.c:81:2:  [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 rcv_dip[IPWD_MAX_DEVICE_ADDRESS_LEN];
data/ipwatchd-1.2.1/src/analyse.c:97:2:  [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 rcv_dmac[IPWD_MAX_DEVICE_ADDRESS_LEN];
data/ipwatchd-1.2.1/src/config.c:42:12:  [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 ((fr = fopen (filename, "r")) == NULL)
data/ipwatchd-1.2.1/src/config.c:67:2:  [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 line[500];
data/ipwatchd-1.2.1/src/config.c:70:2:  [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 variable[100];
data/ipwatchd-1.2.1/src/config.c:71:2:  [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 value[400];
data/ipwatchd-1.2.1/src/config.c:74:2:  [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 errbuf[PCAP_ERRBUF_SIZE];
data/ipwatchd-1.2.1/src/config.c:84:12:  [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 ((fr = fopen (filename, "r")) == NULL)
data/ipwatchd-1.2.1/src/daemonize.c:128:12:  [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 ((fw = fopen (IPWD_PIDFILE, "w")) == NULL)
data/ipwatchd-1.2.1/src/daemonize.c:157:2:  [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 proc_this[PATH_MAX];
data/ipwatchd-1.2.1/src/daemonize.c:159:2:  [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 proc_pidfile[PATH_MAX];
data/ipwatchd-1.2.1/src/daemonize.c:178:12:  [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 ((fr = fopen (IPWD_PIDFILE, "r")) == NULL)
data/ipwatchd-1.2.1/src/devinfo.c:127:2:  [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 ifaces_buf[10240];
data/ipwatchd-1.2.1/src/devinfo.c:136:2:  [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 errbuf[PCAP_ERRBUF_SIZE];
data/ipwatchd-1.2.1/src/genarp.c:78:2:  [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 errbuf[LIBNET_ERRBUF_SIZE];
data/ipwatchd-1.2.1/src/ipwatchd.c:167:2:  [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 errbuf[PCAP_ERRBUF_SIZE];
data/ipwatchd-1.2.1/src/ipwatchd.h:136:2:  [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 device[IPWD_MAX_DEVICE_NAME_LEN];		/**< Device name */
data/ipwatchd-1.2.1/src/ipwatchd.h:138:2:  [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 ip[IPWD_MAX_DEVICE_ADDRESS_LEN];		/**< IP address of device */
data/ipwatchd-1.2.1/src/ipwatchd.h:139:2:  [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 mac[IPWD_MAX_DEVICE_ADDRESS_LEN];		/**< MAC address of device */
data/ipwatchd-1.2.1/src/message.c:46:2:  [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 msg[IPWD_MSG_BUFSIZ];
data/ipwatchd-1.2.1/src/analyse.c:65:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (rcv_sip, p_rcv_sip, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/analyse.c:78:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (rcv_smac, p_rcv_smac, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/analyse.c:94:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (rcv_dip, p_rcv_dip, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/analyse.c:107:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (rcv_dmac, p_rcv_dmac, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/analyse.c:197:18:  [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).
			command_len = strlen (config.script) + 2 + strlen (devices.dev[i].device) + 3 + strlen (devices.dev[i].ip) + 3 + strlen (rcv_smac) + 2;
data/ipwatchd-1.2.1/src/analyse.c:197:47:  [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).
			command_len = strlen (config.script) + 2 + strlen (devices.dev[i].device) + 3 + strlen (devices.dev[i].ip) + 3 + strlen (rcv_smac) + 2;
data/ipwatchd-1.2.1/src/analyse.c:197:84:  [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).
			command_len = strlen (config.script) + 2 + strlen (devices.dev[i].device) + 3 + strlen (devices.dev[i].ip) + 3 + strlen (rcv_smac) + 2;
data/ipwatchd-1.2.1/src/analyse.c:197:117:  [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).
			command_len = strlen (config.script) + 2 + strlen (devices.dev[i].device) + 3 + strlen (devices.dev[i].ip) + 3 + strlen (rcv_smac) + 2;
data/ipwatchd-1.2.1/src/config.c:106:7:  [1] (buffer) sscanf:
  It's unclear if the %s limit in the format string is small enough
  (CWE-120). Check that the limit is sufficiently small, or use a different
  input function.
		if (sscanf (line, "%99s %399s", variable, value) != 2)
data/ipwatchd-1.2.1/src/config.c:226:43:  [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 ((config.script = (char *) malloc ((strlen (value) + 1) * sizeof (char))) == NULL)
data/ipwatchd-1.2.1/src/config.c:289:8:  [1] (buffer) sscanf:
  It's unclear if the %s limit in the format string is small enough
  (CWE-120). Check that the limit is sufficiently small, or use a different
  input function.
			if (sscanf (line, "%*s %93s %399s", variable, value) != 2)
data/ipwatchd-1.2.1/src/config.c:326:4:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
			strncpy (devices.dev[devices.devnum].device, variable, IPWD_MAX_DEVICE_NAME_LEN - 1);
data/ipwatchd-1.2.1/src/daemonize.c:70:2:  [1] (access) umask:
  Ensure that umask is given most restrictive possible setting (e.g., 066 or
  077) (CWE-732).
	umask (0166);
data/ipwatchd-1.2.1/src/devinfo.c:84:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (p_ip, p_dev_ip, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/devinfo.c:104:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy (p_mac, p_dev_mac, IPWD_MAX_DEVICE_ADDRESS_LEN - 1);
data/ipwatchd-1.2.1/src/devinfo.c:219:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
		strncpy (devices.dev[devices.devnum].device, iface->ifr_name, IPWD_MAX_DEVICE_NAME_LEN - 1);
data/ipwatchd-1.2.1/src/ipwatchd.c:90:42:  [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 ((config_file = (char *) malloc ((strlen (optarg) + 1) * sizeof (char))) == NULL)

ANALYSIS SUMMARY:

Hits = 47
Lines analyzed = 1916 in approximately 0.08 seconds (25516 lines/second)
Physical Source Lines of Code (SLOC) = 1141
Hits@level = [0]  32 [1]  17 [2]  22 [3]   1 [4]   5 [5]   2
Hits@level+ = [0+]  79 [1+]  47 [2+]  30 [3+]   8 [4+]   7 [5+]   2
Hits/KSLOC@level+ = [0+] 69.2375 [1+] 41.1919 [2+] 26.2927 [3+] 7.01139 [4+] 6.13497 [5+] 1.75285
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.