| 1 | /* |
| 2 | ** Copyright 2000-2004 Double Precision, Inc. See COPYING for |
| 3 | ** distribution information. |
| 4 | */ |
| 5 | #if HAVE_CONFIG_H |
| 6 | #include "courier_auth_config.h" |
| 7 | #endif |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | #include <errno.h> |
| 12 | #include <pwd.h> |
| 13 | #if HAVE_UNISTD_H |
| 14 | #include <unistd.h> |
| 15 | #endif |
| 16 | |
| 17 | #include "auth.h" |
| 18 | #include "authmysql.h" |
| 19 | #include "authstaticlist.h" |
| 20 | #include "courierauthdebug.h" |
| 21 | |
| 22 | static const char rcsid[]="$Id: authmysql.c,v 1.23 2006/10/28 19:22:52 mrsam Exp $"; |
| 23 | |
| 24 | extern void auth_mysql_enumerate( void(*cb_func)(const char *name, |
| 25 | uid_t uid, |
| 26 | gid_t gid, |
| 27 | const char *homedir, |
| 28 | const char *maildir, |
| 29 | const char *options, |
| 30 | void *void_arg), |
| 31 | void *void_arg); |
| 32 | |
| 33 | static int auth_mysql_login(const char *service, char *authdata, |
| 34 | int (*callback_func)(struct authinfo *, void *), |
| 35 | void *callback_arg) |
| 36 | { |
| 37 | char *user, *pass; |
| 38 | struct authmysqluserinfo *authinfo; |
| 39 | struct authinfo aa; |
| 40 | |
| 41 | |
| 42 | if ((user=strtok(authdata, "\n")) == 0 || |
| 43 | (pass=strtok(0, "\n")) == 0) |
| 44 | { |
| 45 | errno=EPERM; |
| 46 | return (-1); |
| 47 | } |
| 48 | |
| 49 | authinfo=auth_mysql_getuserinfo(user, service); |
| 50 | |
| 51 | if (!authinfo) /* Fatal error - such as MySQL being down */ |
| 52 | { |
| 53 | errno=EACCES; |
| 54 | return (1); |
| 55 | } |
| 56 | |
| 57 | if (authinfo->cryptpw) |
| 58 | { |
| 59 | if (authcheckpassword(pass,authinfo->cryptpw)) |
| 60 | { |
| 61 | errno=EPERM; |
| 62 | return (-1); /* User/Password not found. */ |
| 63 | } |
| 64 | } |
| 65 | else if (authinfo->clearpw) |
| 66 | { |
| 67 | if (strcmp(pass, authinfo->clearpw)) |
| 68 | { |
| 69 | if (courier_authdebug_login_level >= 2) |
| 70 | { |
| 71 | DPRINTF("supplied password '%s' does not match clearpasswd '%s'", |
| 72 | pass, authinfo->clearpw); |
| 73 | } |
| 74 | else |
| 75 | { |
| 76 | DPRINTF("supplied password does not match clearpasswd"); |
| 77 | } |
| 78 | errno=EPERM; |
| 79 | return (-1); |
| 80 | } |
| 81 | } |
| 82 | else |
| 83 | { |
| 84 | DPRINTF("no password available to compare"); |
| 85 | errno=EPERM; |
| 86 | return (-1); /* Username not found */ |
| 87 | } |
| 88 | |
| 89 | memset(&aa, 0, sizeof(aa)); |
| 90 | |
| 91 | aa.sysuserid= &authinfo->uid; |
| 92 | aa.sysgroupid= authinfo->gid; |
| 93 | aa.homedir=authinfo->home; |
| 94 | aa.maildir=authinfo->maildir && authinfo->maildir[0] ? |
| 95 | authinfo->maildir:0; |
| 96 | aa.address=authinfo->username; |
| 97 | aa.quota=authinfo->quota && authinfo->quota[0] ? |
| 98 | authinfo->quota:0; |
| 99 | aa.fullname=authinfo->fullname; |
| 100 | aa.options=authinfo->options; |
| 101 | aa.clearpasswd=pass; |
| 102 | aa.passwd=authinfo->cryptpw; |
| 103 | courier_authdebug_authinfo("DEBUG: authmysql: ", &aa, |
| 104 | authinfo->clearpw, authinfo->cryptpw); |
| 105 | |
| 106 | return (*callback_func)(&aa, callback_arg); |
| 107 | } |
| 108 | |
| 109 | static int auth_mysql_changepw(const char *service, const char *user, |
| 110 | const char *pass, |
| 111 | const char *newpass) |
| 112 | { |
| 113 | struct authmysqluserinfo *authinfo; |
| 114 | |
| 115 | authinfo=auth_mysql_getuserinfo(user, service); |
| 116 | |
| 117 | if (!authinfo) |
| 118 | { |
| 119 | errno=ENOENT; |
| 120 | return (-1); |
| 121 | } |
| 122 | |
| 123 | if (authinfo->cryptpw) |
| 124 | { |
| 125 | if (authcheckpassword(pass,authinfo->cryptpw)) |
| 126 | { |
| 127 | errno=EPERM; |
| 128 | return (-1); /* User/Password not found. */ |
| 129 | } |
| 130 | } |
| 131 | else if (authinfo->clearpw) |
| 132 | { |
| 133 | if (strcmp(pass, authinfo->clearpw)) |
| 134 | { |
| 135 | errno=EPERM; |
| 136 | return (-1); |
| 137 | } |
| 138 | } |
| 139 | else |
| 140 | { |
| 141 | errno=EPERM; |
| 142 | return (-1); |
| 143 | } |
| 144 | |
| 145 | if (auth_mysql_setpass(user, newpass, authinfo->cryptpw)) |
| 146 | { |
| 147 | errno=EPERM; |
| 148 | return (-1); |
| 149 | } |
| 150 | return (0); |
| 151 | } |
| 152 | |
| 153 | #if HAVE_HMACLIB |
| 154 | |
| 155 | #include "libhmac/hmac.h" |
| 156 | #include "cramlib.h" |
| 157 | |
| 158 | |
| 159 | static int auth_mysql_cram(const char *service, |
| 160 | const char *authtype, char *authdata, |
| 161 | int (*callback_func)(struct authinfo *, void *), |
| 162 | void *callback_arg) |
| 163 | { |
| 164 | struct cram_callback_info cci; |
| 165 | |
| 166 | if (auth_get_cram(authtype, authdata, &cci)) |
| 167 | return (-1); |
| 168 | |
| 169 | cci.callback_func=callback_func; |
| 170 | cci.callback_arg=callback_arg; |
| 171 | |
| 172 | return auth_mysql_pre(cci.user, service, &auth_cram_callback, &cci); |
| 173 | } |
| 174 | #endif |
| 175 | |
| 176 | int auth_mysql(const char *service, const char *authtype, char *authdata, |
| 177 | int (*callback_func)(struct authinfo *, void *), |
| 178 | void *callback_arg) |
| 179 | { |
| 180 | if (strcmp(authtype, AUTHTYPE_LOGIN) == 0) |
| 181 | return (auth_mysql_login(service, authdata, |
| 182 | callback_func, callback_arg)); |
| 183 | |
| 184 | #if HAVE_HMACLIB |
| 185 | return (auth_mysql_cram(service, authtype, authdata, |
| 186 | callback_func, callback_arg)); |
| 187 | #else |
| 188 | errno=EPERM; |
| 189 | return (-1); |
| 190 | #endif |
| 191 | } |
| 192 | |
| 193 | extern int auth_mysql_pre(const char *user, const char *service, |
| 194 | int (*callback)(struct authinfo *, void *), |
| 195 | void *arg); |
| 196 | |
| 197 | static struct authstaticinfo authmysql_info={ |
| 198 | "authmysql", |
| 199 | auth_mysql, |
| 200 | auth_mysql_pre, |
| 201 | auth_mysql_cleanup, |
| 202 | auth_mysql_changepw, |
| 203 | auth_mysql_cleanup, |
| 204 | auth_mysql_enumerate}; |
| 205 | |
| 206 | |
| 207 | struct authstaticinfo *courier_authmysql_init() |
| 208 | { |
| 209 | return &authmysql_info; |
| 210 | } |