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/lunzip-1.11/decoder.c
Examining data/lunzip-1.11/lzip_index.h
Examining data/lunzip-1.11/carg_parser.c
Examining data/lunzip-1.11/carg_parser.h
Examining data/lunzip-1.11/lzip_index.c
Examining data/lunzip-1.11/main.c
Examining data/lunzip-1.11/list.c
Examining data/lunzip-1.11/decoder.h
Examining data/lunzip-1.11/lzip.h

FINAL RESULTS:

data/lunzip-1.11/main.c:312:7:  [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( output_filename, name );
data/lunzip-1.11/main.c:313:7:  [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( output_filename + name_len - from_len, known_extensions[eindex].to );
data/lunzip-1.11/main.c:318:3:  [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( output_filename, name );
data/lunzip-1.11/main.c:773:11:  [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( output_filename, default_output_filename );
data/lunzip-1.11/carg_parser.c:160:5:  [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 code_str[2];
data/lunzip-1.11/decoder.h:75:5:  [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( outbuf + sz, rdec->buffer + rdec->pos, rd );
data/lunzip-1.11/decoder.h:288:7:  [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( d->buffer + lpos, d->buffer + i, len );
data/lunzip-1.11/lzip_index.c:102:3:  [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[80];
data/lunzip-1.11/lzip_index.c:174:5:  [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( buffer + rd_size, buffer, buffer_size - rd_size );
data/lunzip-1.11/main.c:179:10:  [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[80];
data/lunzip-1.11/main.c:189:10:  [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[bufsize];
data/lunzip-1.11/main.c:190:9:  [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.
  const char * const prefix[8] =
data/lunzip-1.11/main.c:319:3:  [2] (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 string.
  strcat( output_filename, ".out" );
data/lunzip-1.11/main.c:329:14:  [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).
  int infd = open( name, O_RDONLY | O_BINARY );
data/lunzip-1.11/main.c:362:11:  [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).
  outfd = open( output_filename, flags, outfd_mode );
data/lunzip-1.11/main.c:459:5:  [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[80];
data/lunzip-1.11/carg_parser.c:38:19:  [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).
  const int len = strlen( argument );
data/lunzip-1.11/carg_parser.c:50:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
  strncpy( p->argument, argument, len + 1 );
data/lunzip-1.11/carg_parser.c:58:19:  [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).
  const int len = strlen( msg );
data/lunzip-1.11/carg_parser.c:62:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
  strncpy( ap->error + ap->error_size, msg, len + 1 );
data/lunzip-1.11/carg_parser.c:92:11:  [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( strlen( options[i].name ) == len )	/* Exact match found */
data/lunzip-1.11/decoder.c:44:19:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    const int n = read( fd, buf + sz, size - sz );
data/lunzip-1.11/lzip.h:144:20:  [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).
  stdin_name_len = strlen( pp->stdin_name );
data/lunzip-1.11/lzip.h:148:69:  [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).
    const unsigned len = (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s );
data/lunzip-1.11/lzip.h:162:14:  [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).
  name_len = strlen( pp->name );
data/lunzip-1.11/lzip_index.c:43:19:  [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).
  const int len = strlen( msg );
data/lunzip-1.11/lzip_index.c:47:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
  strncpy( li->error + li->error_size, msg, len + 1 );
data/lunzip-1.11/main.c:213:50:  [1] (obsolete) ulimit:
  This C routine is considered obsolete (as opposed to the shell command by
  the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
  setrlimit(2), and sysconf(3) instead.
                             const unsigned long ulimit )
data/lunzip-1.11/main.c:249:11:  [1] (obsolete) ulimit:
  This C routine is considered obsolete (as opposed to the shell command by
  the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
  setrlimit(2), and sysconf(3) instead.
      if( ulimit / factor >= result ) result *= factor;
data/lunzip-1.11/main.c:253:47:  [1] (obsolete) ulimit:
  This C routine is considered obsolete (as opposed to the shell command by
  the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
  setrlimit(2), and sysconf(3) instead.
  if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
data/lunzip-1.11/main.c:291:31:  [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).
    const unsigned name_len = strlen( name );
data/lunzip-1.11/main.c:292:30:  [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).
    const unsigned ext_len = strlen( ext );
data/lunzip-1.11/main.c:303:29:  [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).
  const unsigned name_len = strlen( name );
data/lunzip-1.11/main.c:307:31:  [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).
    const unsigned from_len = strlen( from );
data/lunzip-1.11/main.c:311:40:  [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).
                                       strlen( known_extensions[eindex].to ) + 1 );
data/lunzip-1.11/main.c:772:31:  [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).
                              strlen( default_output_filename ) + 1 );

ANALYSIS SUMMARY:

Hits = 36
Lines analyzed = 2737 in approximately 0.09 seconds (29956 lines/second)
Physical Source Lines of Code (SLOC) = 2209
Hits@level = [0]  37 [1]  20 [2]  12 [3]   0 [4]   4 [5]   0
Hits@level+ = [0+]  73 [1+]  36 [2+]  16 [3+]   4 [4+]   4 [5+]   0
Hits/KSLOC@level+ = [0+] 33.0466 [1+] 16.297 [2+] 7.2431 [3+] 1.81077 [4+] 1.81077 [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.