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/hardlink-0.3.2/configure.c
Examining data/hardlink-0.3.2/hardlink.c

FINAL RESULTS:

data/hardlink-0.3.2/hardlink.c:217:24:  [4] (format) printf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
__attribute__ ((format(printf, 2, 3)))
data/hardlink-0.3.2/hardlink.c:235:9:  [4] (format) vfprintf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
        vfprintf(stream, format, args);
data/hardlink-0.3.2/configure.c:43:12:  [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.
    return getopt_long(argc, argv, "", options, 0);
data/hardlink-0.3.2/hardlink.c:68:9:  [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.
#define getopt_long(argc, argv, shrt, lng, index) getopt((argc), (argv), (shrt))
data/hardlink-0.3.2/hardlink.c:68:51:  [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.
#define getopt_long(argc, argv, shrt, lng, index) getopt((argc), (argv), (shrt))
data/hardlink-0.3.2/hardlink.c:1069:19:  [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, optstr, long_options, NULL)) != -1) {
data/hardlink-0.3.2/hardlink.c:117:9:  [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[0];
data/hardlink-0.3.2/hardlink.c:119:9:  [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[1];
data/hardlink-0.3.2/hardlink.c:262:12:  [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.
    static char buf[256];
data/hardlink-0.3.2/hardlink.c:610:5:  [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_a[8192];
data/hardlink-0.3.2/hardlink.c:611:5:  [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_b[8192];
data/hardlink-0.3.2/hardlink.c:622:15:  [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 ((fa = fopen(a->links->path, "rb")) == NULL)
data/hardlink-0.3.2/hardlink.c:624:15:  [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 ((fb = fopen(b->links->path, "rb")) == NULL)
data/hardlink-0.3.2/hardlink.c:850:5:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
    memcpy(fil->links->path, fpath, pathlen);
data/hardlink-0.3.2/hardlink.c:456:54:  [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).
    for (name = names; name < (names + len); name += strlen(name) + 1)
data/hardlink-0.3.2/hardlink.c:485:18:  [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).
        names += strlen(names) + 1;
data/hardlink-0.3.2/hardlink.c:742:22:  [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).
        size_t len = strlen(b->links->path) + strlen(".hardlink-temporary") + 1;
data/hardlink-0.3.2/hardlink.c:742:47:  [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).
        size_t len = strlen(b->links->path) + strlen(".hardlink-temporary") + 1;
data/hardlink-0.3.2/hardlink.c:834:15:  [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).
    pathlen = strlen(fpath) + 1;

ANALYSIS SUMMARY:

Hits = 19
Lines analyzed = 1301 in approximately 0.07 seconds (19713 lines/second)
Physical Source Lines of Code (SLOC) = 821
Hits@level = [0]  14 [1]   5 [2]   8 [3]   4 [4]   2 [5]   0
Hits@level+ = [0+]  33 [1+]  19 [2+]  14 [3+]   6 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 40.1949 [1+] 23.1425 [2+] 17.0524 [3+] 7.30816 [4+] 2.43605 [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.