/[svn]/ircd-hybrid/trunk/tools/mkpasswd.c
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revision 6581 by michael, Sun Oct 18 16:58:34 2015 UTC revision 6582 by michael, Tue Oct 20 18:55:49 2015 UTC
# Line 19  Line 19 
19  #include <unistd.h>  #include <unistd.h>
20  #include <fcntl.h>  #include <fcntl.h>
21    
22  #define FLAG_MD5      0x00000001  enum
23  #define FLAG_DES      0x00000002  {
24  #define FLAG_SALT     0x00000004    FLAG_MD5      = 0x00000001,
25  #define FLAG_PASS     0x00000008    FLAG_SALT     = 0x00000002,
26  #define FLAG_LENGTH   0x00000010    FLAG_PASS     = 0x00000004,
27  #define FLAG_BLOWFISH 0x00000020    FLAG_LENGTH   = 0x00000008,
28  #define FLAG_ROUNDS   0x00000040    FLAG_BLOWFISH = 0x00000010,
29  #define FLAG_EXT      0x00000080    FLAG_ROUNDS   = 0x00000020,
30  #define FLAG_RAW      0x00000100    FLAG_RAW      = 0x00000040,
31  #define FLAG_SHA256   0x00000200    FLAG_SHA256   = 0x00000080,
32  #define FLAG_SHA512   0x00000400    FLAG_SHA512   = 0x00000100
33    };
34    
35    
36  extern char *crypt();  extern char *crypt();
# Line 39  static const char *make_sha256_salt(unsi Line 40  static const char *make_sha256_salt(unsi
40  static const char *make_sha256_salt_para(const char *);  static const char *make_sha256_salt_para(const char *);
41  static const char *make_sha512_salt(unsigned int);  static const char *make_sha512_salt(unsigned int);
42  static const char *make_sha512_salt_para(const char *);  static const char *make_sha512_salt_para(const char *);
 static const char *make_des_salt(void);  
 static const char *make_ext_salt(unsigned int);  
 static const char *make_ext_salt_para(unsigned int, const char *);  
43  static const char *make_md5_salt(unsigned int);  static const char *make_md5_salt(unsigned int);
44  static const char *make_md5_salt_para(const char *);  static const char *make_md5_salt_para(const char *);
45  static const char *make_bf_salt(unsigned int, unsigned int);  static const char *make_blowfish_salt(unsigned int, unsigned int);
46  static const char *make_bf_salt_para(unsigned int, const char *);  static const char *make_blowfish_salt_para(unsigned int, const char *);
 static const char *int_to_base64(unsigned int);  
47  static const char *generate_random_salt(char *, unsigned int);  static const char *generate_random_salt(char *, unsigned int);
48  static const char *generate_poor_salt(char *, unsigned int);  static const char *generate_poor_salt(char *, unsigned int);
49  static void full_usage(void);  static void full_usage(void);
50  static void brief_usage(void);  static void brief_usage(void);
51    
52  static const char saltChars[] =  static const char saltChars[] =
53         "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";         "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
54         /* 0 .. 63, ascii - 64 */         /* 0 .. 63, ascii - 64 */
55    
56  int  int
# Line 63  main(int argc, char *argv[]) Line 60  main(int argc, char *argv[])
60    const char *saltpara = NULL;    const char *saltpara = NULL;
61    const char *salt = NULL;    const char *salt = NULL;
62    const char *ret = NULL;    const char *ret = NULL;
63    int c;    unsigned int flag = 0;
   int flag = 0;  
64    int length = 0; /* Not Set */    int length = 0; /* Not Set */
65    int rounds = 0; /* Not set, since extended DES needs 25 and blowfish needs    int rounds = 0; /* Not set, since extended DES needs 25 and blowfish needs
66                    ** 4 by default, a side effect of this being the encryption                    ** 4 by default, a side effect of this being the encryption
# Line 72  main(int argc, char *argv[]) Line 68  main(int argc, char *argv[])
68                    ** parameter.                    ** parameter.
69                    */                    */
70    
71    while ((c = getopt(argc, argv, "56mdber:h?l:s:p:R:")) != -1)    for (int c = 0; (c = getopt(argc, argv, "56mbr:h?l:s:p:R:")) != -1; )
72    {    {
73      switch (c)      switch (c)
74      {      {
# Line 85  main(int argc, char *argv[]) Line 81  main(int argc, char *argv[])
81        case 'm':        case 'm':
82          flag |= FLAG_MD5;          flag |= FLAG_MD5;
83          break;          break;
       case 'd':  
         flag |= FLAG_DES;  
         break;  
84        case 'b':        case 'b':
85          flag |= FLAG_BLOWFISH;          flag |= FLAG_BLOWFISH;
86          rounds = 4;          rounds = 4;
87          break;          break;
       case 'e':  
         flag |= FLAG_EXT;  
         rounds = 25;  
         break;  
88        case 'l':        case 'l':
89          flag |= FLAG_LENGTH;          flag |= FLAG_LENGTH;
90          if ((length = atoi(optarg)) < 0)          if ((length = atoi(optarg)) < 0)
# Line 132  main(int argc, char *argv[]) Line 121  main(int argc, char *argv[])
121      }      }
122    }    }
123    
124    if (flag & FLAG_DES)    if (flag & FLAG_SHA256)
   {  
     if (flag & FLAG_SALT)  
     {  
       if (strlen(saltpara) == 2)  
         salt = saltpara;  
       else  
       {  
         printf("Invalid salt, please enter 2 alphanumeric characters\n");  
         exit(1);  
       }  
     }  
     else  
       salt = make_des_salt();  
   }  
   else if (flag & FLAG_SHA256)  
125    {    {
126      if (length == 0)      if (length == 0)
127        length = 16;        length = 16;
# Line 170  main(int argc, char *argv[]) Line 144  main(int argc, char *argv[])
144      if (length == 0)      if (length == 0)
145        length = 22;        length = 22;
146      if (flag & FLAG_SALT)      if (flag & FLAG_SALT)
147        salt = make_bf_salt_para(rounds, saltpara);        salt = make_blowfish_salt_para(rounds, saltpara);
148      else      else
149        salt = make_bf_salt(rounds, length);        salt = make_blowfish_salt(rounds, length);
   }  
   else if (flag & FLAG_EXT)  
   {  
     /* XXX - rounds needs to be done */  
     if (flag & FLAG_SALT)  
     {  
       if (strlen(saltpara) == 4)  
       {  
         salt = make_ext_salt_para(rounds, saltpara);  
       }  
       else  
       {  
         printf("Invalid salt, please enter 4 alphanumeric characters\n");  
         exit(1);  
       }  
     }  
     else  
     {  
       salt = make_ext_salt(rounds);  
     }  
150    }    }
151    else if (flag & FLAG_RAW)    else if (flag & FLAG_RAW)
   {  
152      salt = saltpara;      salt = saltpara;
   }  
153    else  /* Default to MD5 */    else  /* Default to MD5 */
154    {    {
155      if (length == 0)      if (length == 0)
# Line 225  main(int argc, char *argv[]) Line 177  main(int argc, char *argv[])
177  }  }
178    
179  static const char *  static const char *
 make_des_salt(void)  
 {  
   static char salt[3];  
   
   generate_random_salt(salt, 2);  
   salt[2] = '\0';  
   return salt;  
 }  
   
 static const char *  
 int_to_base64(unsigned int value)  
 {  
   static char buf[5];  
   unsigned int i;  
   
   for (i = 0; i < 4; ++i)  
   {  
     buf[i] = saltChars[value & 63];  
     value >>= 6;  /* Right shifting 6 places is the same as dividing by 64 */  
   }  
   
   buf[i] = '\0';  
   
   return buf;  
 }  
   
 static const char *  
 make_ext_salt(unsigned int rounds)  
 {  
   static char salt[10];  
   
   snprintf(salt, sizeof(salt), "_%s", int_to_base64(rounds));  
   
   generate_random_salt(&salt[5], 4);  
   salt[9] = '\0';  
   
   return salt;  
 }  
   
 static const char *  
 make_ext_salt_para(unsigned int rounds, const char *saltpara)  
 {  
   static char salt[10];  
   
   snprintf(salt, sizeof(salt), "_%s%s", int_to_base64(rounds), saltpara);  
   return salt;  
 }  
   
 static const char *  
180  make_sha256_salt_para(const char *saltpara)  make_sha256_salt_para(const char *saltpara)
181  {  {
182    static char salt[21];    static char salt[21];
# Line 397  make_md5_salt(unsigned int length) Line 300  make_md5_salt(unsigned int length)
300  }  }
301    
302  static const char *  static const char *
303  make_bf_salt_para(unsigned int rounds, const char *saltpara)  make_blowfish_salt_para(unsigned int rounds, const char *saltpara)
304  {  {
305    static char salt[31];    static char salt[31];
306    char tbuf[3];    char tbuf[3];
# Line 417  make_bf_salt_para(unsigned int rounds, c Line 320  make_bf_salt_para(unsigned int rounds, c
320  }  }
321    
322  static const char *  static const char *
323  make_bf_salt(unsigned int rounds, unsigned int length)  make_blowfish_salt(unsigned int rounds, unsigned int length)
324  {  {
325    static char salt[31];    static char salt[31];
326    char tbuf[3];    char tbuf[3];
# Line 481  generate_random_salt(char *salt, unsigne Line 384  generate_random_salt(char *salt, unsigne
384  static void  static void
385  full_usage(void)  full_usage(void)
386  {  {
387    printf("mkpasswd [-5|-6|-m|-d|-b|-e] [-l saltlength] [-r rounds] [-s salt] [-p plaintext]\n");    printf("mkpasswd [-5|-6|-b|-m] [-l saltlength] [-r rounds] [-s salt] [-p plaintext]\n");
388    printf("         [-R rawsalt]\n");    printf("         [-R rawsalt]\n");
389    printf("-5 Generate a SHA-256 password\n");    printf("-5 Generate a SHA-256 password\n");
390    printf("-6 Generate a SHA-512 password\n");    printf("-6 Generate a SHA-512 password\n");
   printf("-m Generate an MD5 password\n");  
   printf("-d Generate a DES password\n");  
391    printf("-b Generate a Blowfish password\n");    printf("-b Generate a Blowfish password\n");
392    printf("-e Generate an Extended DES password\n");    printf("-m Generate an MD5 password\n");
393    printf("-l Specify a length for a random MD5 or Blowfish salt\n");    printf("-l Specify a length for a random MD5 or Blowfish salt\n");
394    printf("-r Specify a number of rounds for a Blowfish or Extended DES password\n");    printf("-r Specify a number of rounds for a Blowfish password;\n");
395    printf("   Blowfish:  default 4, no more than 6 recommended\n");    printf("   default is 4, no more than 6 recommended\n");
396    printf("   Extended DES:  default 25\n");    printf("-s Specify a salt, up to 16 alphanumeric characters for SHA/MD5,\n");
397    printf("-s Specify a salt, 2 alphanumeric characters for DES, up to 16 for SHA/MD5,\n");    printf("   and at least 22 for Blowfish\n");
   printf("   up to 22 for Blowfish, and 4 for Extended DES\n");  
398    printf("-R Specify a raw salt passed directly to crypt()\n");    printf("-R Specify a raw salt passed directly to crypt()\n");
399    printf("-p Specify a plaintext password to use\n");    printf("-p Specify a plaintext password to use\n");
400    printf("Example: mkpasswd -m -s 3dr -p test\n");    printf("Example: mkpasswd -6 -s 3dr -p test\n");
401    exit(0);    exit(0);
402  }  }
403    
# Line 505  static void Line 405  static void
405  brief_usage(void)  brief_usage(void)
406  {  {
407    printf("mkpasswd - password hash generator\n");    printf("mkpasswd - password hash generator\n");
408    printf("Standard DES:  mkpasswd [-d] [-s salt] [-p plaintext]\n");    printf("     MD5:  mkpasswd [-m] [-l saltlength] [-s salt] [-p plaintext]\n");
409    printf("Extended DES:  mkpasswd -e [-r rounds] [-s salt] [-p plaintext]\n");    printf(" SHA-256:  mkpasswd -5 [-l saltlength] [-s salt] [-p plaintext]\n");
410    printf("     SHA-256:  mkpasswd -5 [-l saltlength] [-s salt] [-p plaintext]\n");    printf(" SHA-512:  mkpasswd -6 [-l saltlength] [-s salt] [-p plaintext]\n");
411    printf("     SHA-512:  mkpasswd -6 [-l saltlength] [-s salt] [-p plaintext]\n");    printf("Blowfish:  mkpasswd -b [-r rounds] [-l saltlength] [-s salt]\n");
   printf("         MD5:  mkpasswd -m [-l saltlength] [-s salt] [-p plaintext]\n");  
   printf("    Blowfish:  mkpasswd -b [-r rounds] [-l saltlength] [-s salt]\n");  
412    printf("                           [-p plaintext]\n");    printf("                           [-p plaintext]\n");
413    printf("         Raw:  mkpasswd -R <rawsalt> [-p plaintext]\n");    printf("     Raw:  mkpasswd -R <rawsalt> [-p plaintext]\n");
414    printf("Use -h for full usage\n");    printf("Use -h for full usage\n");
415    exit(0);    exit(0);
416  }  }
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