modules/m_makepass.c

   1 /* {{{ irc-seven: Cows like it.
   2  *
   3  * Copyright (C) 2002 W. Campbell and the ircd-ratbox development team.
   4  *
   5  * Based on mkpasswd.c, originally by Nelson Minar (minar@reed.edu).
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to:
  19  *
  20  *      Free Software Foundation, Inc.
  21  *      51 Franklin St - Fifth Floor
  22  *      Boston, MA 02110-1301
  23  *      USA
  24  *
  25  * }}} */
  26
  27 /* {{{ Includes. */
  28 #include "stdinc.h"
  29 #include "client.h"
  30 #include "common.h"
  31 #include "ircd.h"
  32 #include "irc_string.h"
  33 #include "numeric.h"
  34 #include "patricia.h"
  35 #include "s_newconf.h"
  36 #include "s_conf.h"
  37 #include "s_log.h"
  38 #include "s_serv.h"
  39 #include "send.h"
  40 #include "msg.h"
  41 #include "parse.h"
  42 #include "modules.h"
  43 /* }}} */
  44
  45 extern char *crypt();
  46
  47 static int m_makepass (struct Client *, struct Client *, int, const char **);
  48
  49 static char *make_md5_salt (void);
  50
  51 static char salt_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
  52
  53 /* {{{ static struct Message makepass_msgtab = { ... } */
  54 struct Message makepass_msgtab =
  55 {
  56         "MKPASSWD", 0, 0, 0, MFLG_SLOW,
  57         {
  58                 mg_unreg, {m_makepass, 0}, mg_ignore,
  59                 mg_ignore, mg_ignore, {m_makepass, 0},
  60         },
  61 };
  62 /* }}} */
  63
  64 mapi_clist_av1 makepass_clist[] =
  65 {
  66         &makepass_msgtab,
  67         NULL,
  68 };
  69
  70 /* {{{ DECLARE_MODULE_AV1(...) */
  71 DECLARE_MODULE_AV1
  72 (
  73         makepass,
  74         NULL,
  75         NULL,
  76         makepass_clist,
  77         NULL,
  78         NULL,
  79         "1.1"
  80 );
  81 /* }}} */
  82
  83 /* {{{ m_makepass()
  84  *
  85  * Usage:
  86  *      MAKEPASS <password>
  87  *
  88  * parv[0] - prefix
  89  * parv[1] - password
  90  */
  91 static int
  92 m_makepass (struct Client *client_p, struct Client *source_p, int parc, const char **parv)
  93 {
  94         static time_t last_used = 0;
  95
  96         if (parc < 2 || EmptyString(parv[1]))
  97         {
  98                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name,
  99                         source_p->name, "MAKEPASS");
 100                 return 0;
 101         }
 102         else if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
 103         {
 104                 sendto_one(source_p, form_str(RPL_LOAD2HI), me.name, parv[0]);
 105                 return 0;
 106         }
 107
 108         last_used = CurrentTime;
 109         sendto_one(source_p, ":%s NOTICE %s :Encryption for [ %s ] is [ %s ]",
 110                 me.name, source_p->name, parv[1],
 111                 crypt(parv[1], make_md5_salt()));
 112
 113         return 0;
 114 }
 115 /* }}} */
 116
 117 /* {{{ make_md5_salt()
 118  *
 119  * Create random salt to be used with MD5-based crypt(3).
 120  */
 121 static char *
 122 make_md5_salt(void)
 123 {
 124         static char     salt[13];
 125         int             i = 0;
 126
 127         salt[i++] = '$';
 128         salt[i++] = '1';
 129         salt[i++] = '$';
 130
 131         while (i < 11)
 132                 salt[i++] = salt_chars[random() % 64];
 133
 134         salt[i++] = '$';
 135         salt[i++] = '\0';
 136
 137         return salt;
 138 }
 139 /* }}} */
 140
 141 /*
 142  * vim: ts=8 sw=8 noet fdm=marker tw=80
 143  */