1 | /* |
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2 | * Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers. |
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3 | * All rights reserved. |
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4 | * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. |
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5 | * Copyright (c) 1988, 1993 |
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6 | * The Regents of the University of California. All rights reserved. |
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7 | * |
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8 | * By using this file, you agree to the terms and conditions set |
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9 | * forth in the LICENSE file which can be found at the top level of |
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10 | * the sendmail distribution. |
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11 | * |
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12 | */ |
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13 | |
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14 | #include <sendmail.h> |
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15 | |
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16 | #if USERDB |
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17 | SM_RCSID("@(#)$Id: udb.c,v 1.1.1.1 2003-04-08 15:08:34 zacheiss Exp $ (with USERDB)") |
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18 | #else /* USERDB */ |
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19 | SM_RCSID("@(#)$Id: udb.c,v 1.1.1.1 2003-04-08 15:08:34 zacheiss Exp $ (without USERDB)") |
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20 | #endif /* USERDB */ |
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21 | |
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22 | #if USERDB |
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23 | |
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24 | # if NEWDB |
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25 | # include "sm/bdb.h" |
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26 | # else /* NEWDB */ |
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27 | # define DBT struct _data_base_thang_ |
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28 | DBT |
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29 | { |
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30 | void *data; /* pointer to data */ |
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31 | size_t size; /* length of data */ |
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32 | }; |
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33 | # endif /* NEWDB */ |
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34 | |
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35 | /* |
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36 | ** UDB.C -- interface between sendmail and Berkeley User Data Base. |
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37 | ** |
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38 | ** This depends on the 4.4BSD db package. |
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39 | */ |
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40 | |
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41 | |
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42 | struct udbent |
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43 | { |
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44 | char *udb_spec; /* string version of spec */ |
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45 | int udb_type; /* type of entry */ |
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46 | pid_t udb_pid; /* PID of process which opened db */ |
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47 | char *udb_default; /* default host for outgoing mail */ |
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48 | union |
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49 | { |
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50 | # if NETINET || NETINET6 |
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51 | /* type UE_REMOTE -- do remote call for lookup */ |
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52 | struct |
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53 | { |
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54 | SOCKADDR _udb_addr; /* address */ |
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55 | int _udb_timeout; /* timeout */ |
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56 | } udb_remote; |
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57 | # define udb_addr udb_u.udb_remote._udb_addr |
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58 | # define udb_timeout udb_u.udb_remote._udb_timeout |
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59 | # endif /* NETINET || NETINET6 */ |
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60 | |
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61 | /* type UE_FORWARD -- forward message to remote */ |
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62 | struct |
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63 | { |
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64 | char *_udb_fwdhost; /* name of forward host */ |
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65 | } udb_forward; |
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66 | # define udb_fwdhost udb_u.udb_forward._udb_fwdhost |
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67 | |
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68 | # if NEWDB |
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69 | /* type UE_FETCH -- lookup in local database */ |
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70 | struct |
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71 | { |
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72 | char *_udb_dbname; /* pathname of database */ |
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73 | DB *_udb_dbp; /* open database ptr */ |
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74 | } udb_lookup; |
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75 | # define udb_dbname udb_u.udb_lookup._udb_dbname |
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76 | # define udb_dbp udb_u.udb_lookup._udb_dbp |
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77 | # endif /* NEWDB */ |
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78 | } udb_u; |
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79 | }; |
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80 | |
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81 | # define UDB_EOLIST 0 /* end of list */ |
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82 | # define UDB_SKIP 1 /* skip this entry */ |
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83 | # define UDB_REMOTE 2 /* look up in remote database */ |
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84 | # define UDB_DBFETCH 3 /* look up in local database */ |
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85 | # define UDB_FORWARD 4 /* forward to remote host */ |
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86 | # define UDB_HESIOD 5 /* look up via hesiod */ |
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87 | |
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88 | # define MAXUDBENT 10 /* maximum number of UDB entries */ |
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89 | |
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90 | |
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91 | struct udb_option |
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92 | { |
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93 | char *udbo_name; |
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94 | char *udbo_val; |
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95 | }; |
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96 | |
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97 | # if HESIOD |
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98 | static int hes_udb_get __P((DBT *, DBT *)); |
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99 | # endif /* HESIOD */ |
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100 | static char *udbmatch __P((char *, char *, SM_RPOOL_T *)); |
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101 | static int _udbx_init __P((ENVELOPE *)); |
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102 | static int _udb_parsespec __P((char *, struct udb_option [], int)); |
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103 | |
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104 | /* |
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105 | ** UDBEXPAND -- look up user in database and expand |
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106 | ** |
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107 | ** Parameters: |
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108 | ** a -- address to expand. |
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109 | ** sendq -- pointer to head of sendq to put the expansions in. |
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110 | ** aliaslevel -- the current alias nesting depth. |
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111 | ** e -- the current envelope. |
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112 | ** |
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113 | ** Returns: |
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114 | ** EX_TEMPFAIL -- if something "odd" happened -- probably due |
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115 | ** to accessing a file on an NFS server that is down. |
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116 | ** EX_OK -- otherwise. |
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117 | ** |
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118 | ** Side Effects: |
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119 | ** Modifies sendq. |
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120 | */ |
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121 | |
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122 | static struct udbent UdbEnts[MAXUDBENT + 1]; |
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123 | static bool UdbInitialized = false; |
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124 | |
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125 | int |
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126 | udbexpand(a, sendq, aliaslevel, e) |
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127 | register ADDRESS *a; |
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128 | ADDRESS **sendq; |
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129 | int aliaslevel; |
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130 | register ENVELOPE *e; |
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131 | { |
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132 | int i; |
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133 | DBT key; |
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134 | DBT info; |
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135 | bool breakout; |
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136 | register struct udbent *up; |
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137 | int keylen; |
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138 | int naddrs; |
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139 | char *user; |
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140 | char keybuf[MAXKEY]; |
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141 | |
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142 | memset(&key, '\0', sizeof key); |
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143 | memset(&info, '\0', sizeof info); |
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144 | |
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145 | if (tTd(28, 1)) |
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146 | sm_dprintf("udbexpand(%s)\n", a->q_paddr); |
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147 | |
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148 | /* make certain we are supposed to send to this address */ |
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149 | if (!QS_IS_SENDABLE(a->q_state)) |
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150 | return EX_OK; |
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151 | e->e_to = a->q_paddr; |
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152 | |
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153 | /* on first call, locate the database */ |
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154 | if (!UdbInitialized) |
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155 | { |
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156 | if (_udbx_init(e) == EX_TEMPFAIL) |
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157 | return EX_TEMPFAIL; |
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158 | } |
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159 | |
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160 | /* short circuit the process if no chance of a match */ |
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161 | if (UdbSpec == NULL || UdbSpec[0] == '\0') |
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162 | return EX_OK; |
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163 | |
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164 | /* extract user to do userdb matching on */ |
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165 | user = a->q_user; |
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166 | |
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167 | /* short circuit name begins with '\\' since it can't possibly match */ |
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168 | /* (might want to treat this as unquoted instead) */ |
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169 | if (user[0] == '\\') |
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170 | return EX_OK; |
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171 | |
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172 | /* if name begins with a colon, it indicates our metadata */ |
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173 | if (user[0] == ':') |
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174 | return EX_OK; |
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175 | |
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176 | keylen = sm_strlcpyn(keybuf, sizeof keybuf, 2, user, ":maildrop"); |
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177 | |
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178 | /* if name is too long, assume it won't match */ |
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179 | if (keylen > sizeof keybuf) |
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180 | return EX_OK; |
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181 | |
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182 | /* build actual database key */ |
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183 | |
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184 | breakout = false; |
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185 | for (up = UdbEnts; !breakout; up++) |
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186 | { |
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187 | int usersize; |
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188 | int userleft; |
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189 | char userbuf[MEMCHUNKSIZE]; |
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190 | # if HESIOD && HES_GETMAILHOST |
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191 | char pobuf[MAXNAME]; |
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192 | # endif /* HESIOD && HES_GETMAILHOST */ |
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193 | # if defined(NEWDB) && DB_VERSION_MAJOR > 1 |
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194 | DBC *dbc = NULL; |
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195 | # endif /* defined(NEWDB) && DB_VERSION_MAJOR > 1 */ |
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196 | |
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197 | user = userbuf; |
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198 | userbuf[0] = '\0'; |
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199 | usersize = sizeof userbuf; |
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200 | userleft = sizeof userbuf - 1; |
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201 | |
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202 | /* |
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203 | ** Select action based on entry type. |
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204 | ** |
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205 | ** On dropping out of this switch, "class" should |
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206 | ** explain the type of the data, and "user" should |
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207 | ** contain the user information. |
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208 | */ |
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209 | |
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210 | switch (up->udb_type) |
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211 | { |
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212 | # if NEWDB |
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213 | case UDB_DBFETCH: |
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214 | key.data = keybuf; |
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215 | key.size = keylen; |
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216 | if (tTd(28, 80)) |
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217 | sm_dprintf("udbexpand: trying %s (%d) via db\n", |
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218 | keybuf, keylen); |
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219 | # if DB_VERSION_MAJOR < 2 |
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220 | i = (*up->udb_dbp->seq)(up->udb_dbp, &key, &info, R_CURSOR); |
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221 | # else /* DB_VERSION_MAJOR < 2 */ |
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222 | i = 0; |
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223 | if (dbc == NULL && |
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224 | # if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6 |
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225 | (errno = (*up->udb_dbp->cursor)(up->udb_dbp, |
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226 | NULL, &dbc, 0)) != 0) |
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227 | # else /* DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6 */ |
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228 | (errno = (*up->udb_dbp->cursor)(up->udb_dbp, |
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229 | NULL, &dbc)) != 0) |
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230 | # endif /* DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6 */ |
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231 | i = -1; |
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232 | if (i != 0 || dbc == NULL || |
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233 | (errno = dbc->c_get(dbc, &key, |
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234 | &info, DB_SET)) != 0) |
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235 | i = 1; |
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236 | # endif /* DB_VERSION_MAJOR < 2 */ |
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237 | if (i > 0 || info.size <= 0) |
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238 | { |
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239 | if (tTd(28, 2)) |
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240 | sm_dprintf("udbexpand: no match on %s (%d)\n", |
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241 | keybuf, keylen); |
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242 | # if DB_VERSION_MAJOR > 1 |
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243 | if (dbc != NULL) |
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244 | { |
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245 | (void) dbc->c_close(dbc); |
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246 | dbc = NULL; |
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247 | } |
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248 | # endif /* DB_VERSION_MAJOR > 1 */ |
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249 | break; |
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250 | } |
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251 | if (tTd(28, 80)) |
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252 | sm_dprintf("udbexpand: match %.*s: %.*s\n", |
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253 | (int) key.size, (char *) key.data, |
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254 | (int) info.size, (char *) info.data); |
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255 | |
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256 | a->q_flags &= ~QSELFREF; |
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257 | while (i == 0 && key.size == keylen && |
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258 | memcmp(key.data, keybuf, keylen) == 0) |
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259 | { |
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260 | char *p; |
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261 | |
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262 | if (bitset(EF_VRFYONLY, e->e_flags)) |
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263 | { |
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264 | a->q_state = QS_VERIFIED; |
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265 | # if DB_VERSION_MAJOR > 1 |
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266 | if (dbc != NULL) |
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267 | { |
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268 | (void) dbc->c_close(dbc); |
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269 | dbc = NULL; |
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270 | } |
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271 | # endif /* DB_VERSION_MAJOR > 1 */ |
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272 | return EX_OK; |
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273 | } |
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274 | |
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275 | breakout = true; |
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276 | if (info.size >= userleft - 1) |
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277 | { |
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278 | char *nuser; |
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279 | int size = MEMCHUNKSIZE; |
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280 | |
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281 | if (info.size > MEMCHUNKSIZE) |
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282 | size = info.size; |
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283 | nuser = sm_malloc_x(usersize + size); |
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284 | |
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285 | memmove(nuser, user, usersize); |
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286 | if (user != userbuf) |
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287 | sm_free(user); /* XXX */ |
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288 | user = nuser; |
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289 | usersize += size; |
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290 | userleft += size; |
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291 | } |
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292 | p = &user[strlen(user)]; |
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293 | if (p != user) |
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294 | { |
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295 | *p++ = ','; |
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296 | userleft--; |
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297 | } |
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298 | memmove(p, info.data, info.size); |
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299 | p[info.size] = '\0'; |
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300 | userleft -= info.size; |
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301 | |
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302 | /* get the next record */ |
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303 | # if DB_VERSION_MAJOR < 2 |
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304 | i = (*up->udb_dbp->seq)(up->udb_dbp, &key, &info, R_NEXT); |
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305 | # else /* DB_VERSION_MAJOR < 2 */ |
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306 | i = 0; |
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307 | if ((errno = dbc->c_get(dbc, &key, |
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308 | &info, DB_NEXT)) != 0) |
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309 | i = 1; |
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310 | # endif /* DB_VERSION_MAJOR < 2 */ |
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311 | } |
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312 | |
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313 | # if DB_VERSION_MAJOR > 1 |
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314 | if (dbc != NULL) |
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315 | { |
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316 | (void) dbc->c_close(dbc); |
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317 | dbc = NULL; |
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318 | } |
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319 | # endif /* DB_VERSION_MAJOR > 1 */ |
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320 | |
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321 | /* if nothing ever matched, try next database */ |
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322 | if (!breakout) |
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323 | break; |
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324 | |
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325 | message("expanded to %s", user); |
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326 | if (LogLevel > 10) |
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327 | sm_syslog(LOG_INFO, e->e_id, |
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328 | "expand %.100s => %s", |
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329 | e->e_to, |
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330 | shortenstring(user, MAXSHORTSTR)); |
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331 | naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e); |
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332 | if (naddrs > 0 && !bitset(QSELFREF, a->q_flags)) |
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333 | { |
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334 | if (tTd(28, 5)) |
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335 | { |
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336 | sm_dprintf("udbexpand: QS_EXPANDED "); |
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337 | printaddr(a, false); |
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338 | } |
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339 | a->q_state = QS_EXPANDED; |
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340 | } |
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341 | if (i < 0) |
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342 | { |
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343 | syserr("udbexpand: db-get %.*s stat %d", |
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344 | (int) key.size, (char *) key.data, i); |
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345 | return EX_TEMPFAIL; |
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346 | } |
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347 | |
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348 | /* |
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349 | ** If this address has a -request address, reflect |
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350 | ** it into the envelope. |
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351 | */ |
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352 | |
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353 | memset(&key, '\0', sizeof key); |
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354 | memset(&info, '\0', sizeof info); |
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355 | (void) sm_strlcpyn(keybuf, sizeof keybuf, 2, a->q_user, |
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356 | ":mailsender"); |
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357 | keylen = strlen(keybuf); |
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358 | key.data = keybuf; |
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359 | key.size = keylen; |
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360 | |
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361 | # if DB_VERSION_MAJOR < 2 |
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362 | i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0); |
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363 | # else /* DB_VERSION_MAJOR < 2 */ |
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364 | i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL, |
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365 | &key, &info, 0); |
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366 | # endif /* DB_VERSION_MAJOR < 2 */ |
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367 | if (i != 0 || info.size <= 0) |
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368 | break; |
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369 | a->q_owner = sm_rpool_malloc_x(e->e_rpool, |
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370 | info.size + 1); |
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371 | memmove(a->q_owner, info.data, info.size); |
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372 | a->q_owner[info.size] = '\0'; |
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373 | |
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374 | /* announce delivery; NORECEIPT bit set later */ |
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375 | if (e->e_xfp != NULL) |
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376 | { |
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377 | (void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT, |
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378 | "Message delivered to mailing list %s\n", |
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379 | a->q_paddr); |
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380 | } |
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381 | e->e_flags |= EF_SENDRECEIPT; |
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382 | a->q_flags |= QDELIVERED|QEXPANDED; |
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383 | break; |
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384 | # endif /* NEWDB */ |
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385 | |
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386 | # if HESIOD |
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387 | case UDB_HESIOD: |
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388 | key.data = keybuf; |
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389 | key.size = keylen; |
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390 | if (tTd(28, 80)) |
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391 | sm_dprintf("udbexpand: trying %s (%d) via hesiod\n", |
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392 | keybuf, keylen); |
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393 | /* look up the key via hesiod */ |
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394 | i = hes_udb_get(&key, &info); |
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395 | if (i < 0) |
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396 | { |
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397 | syserr("udbexpand: hesiod-get %.*s stat %d", |
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398 | (int) key.size, (char *) key.data, i); |
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399 | return EX_TEMPFAIL; |
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400 | } |
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401 | else if (i > 0 || info.size <= 0) |
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402 | { |
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403 | # if HES_GETMAILHOST |
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404 | struct hes_postoffice *hp; |
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405 | # endif /* HES_GETMAILHOST */ |
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406 | |
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407 | if (tTd(28, 2)) |
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408 | sm_dprintf("udbexpand: no match on %s (%d)\n", |
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409 | (char *) keybuf, (int) keylen); |
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410 | # if HES_GETMAILHOST |
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411 | if (tTd(28, 8)) |
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412 | sm_dprintf(" ... trying hes_getmailhost(%s)\n", |
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413 | a->q_user); |
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414 | hp = hes_getmailhost(a->q_user); |
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415 | if (hp == NULL) |
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416 | { |
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417 | if (hes_error() == HES_ER_NET) |
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418 | { |
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419 | syserr("udbexpand: hesiod-getmail %s stat %d", |
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420 | a->q_user, hes_error()); |
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421 | return EX_TEMPFAIL; |
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422 | } |
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423 | if (tTd(28, 2)) |
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424 | sm_dprintf("hes_getmailhost(%s): %d\n", |
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425 | a->q_user, hes_error()); |
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426 | break; |
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427 | } |
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428 | if (strlen(hp->po_name) + strlen(hp->po_host) > |
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429 | sizeof pobuf - 2) |
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430 | { |
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431 | if (tTd(28, 2)) |
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432 | sm_dprintf("hes_getmailhost(%s): expansion too long: %.30s@%.30s\n", |
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433 | a->q_user, |
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434 | hp->po_name, |
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435 | hp->po_host); |
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436 | break; |
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437 | } |
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438 | info.data = pobuf; |
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439 | (void) sm_snprintf(pobuf, sizeof pobuf, |
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440 | "%s@%s", hp->po_name, hp->po_host); |
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441 | info.size = strlen(info.data); |
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442 | # else /* HES_GETMAILHOST */ |
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443 | break; |
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444 | # endif /* HES_GETMAILHOST */ |
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445 | } |
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446 | if (tTd(28, 80)) |
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447 | sm_dprintf("udbexpand: match %.*s: %.*s\n", |
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448 | (int) key.size, (char *) key.data, |
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449 | (int) info.size, (char *) info.data); |
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450 | a->q_flags &= ~QSELFREF; |
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451 | |
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452 | if (bitset(EF_VRFYONLY, e->e_flags)) |
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453 | { |
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454 | a->q_state = QS_VERIFIED; |
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455 | return EX_OK; |
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456 | } |
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457 | |
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458 | breakout = true; |
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459 | if (info.size >= usersize) |
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460 | user = sm_malloc_x(info.size + 1); |
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461 | memmove(user, info.data, info.size); |
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462 | user[info.size] = '\0'; |
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463 | |
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464 | message("hesioded to %s", user); |
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465 | if (LogLevel > 10) |
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466 | sm_syslog(LOG_INFO, e->e_id, |
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467 | "hesiod %.100s => %s", |
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468 | e->e_to, |
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469 | shortenstring(user, MAXSHORTSTR)); |
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470 | naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e); |
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471 | |
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472 | if (naddrs > 0 && !bitset(QSELFREF, a->q_flags)) |
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473 | { |
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474 | if (tTd(28, 5)) |
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475 | { |
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476 | sm_dprintf("udbexpand: QS_EXPANDED "); |
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477 | printaddr(a, false); |
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478 | } |
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479 | a->q_state = QS_EXPANDED; |
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480 | } |
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481 | |
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482 | /* |
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483 | ** If this address has a -request address, reflect |
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484 | ** it into the envelope. |
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485 | */ |
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486 | |
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487 | (void) sm_strlcpyn(keybuf, sizeof keybuf, 2, a->q_user, |
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488 | ":mailsender"); |
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489 | keylen = strlen(keybuf); |
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490 | key.data = keybuf; |
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491 | key.size = keylen; |
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492 | i = hes_udb_get(&key, &info); |
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493 | if (i != 0 || info.size <= 0) |
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494 | break; |
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495 | a->q_owner = sm_rpool_malloc_x(e->e_rpool, |
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496 | info.size + 1); |
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497 | memmove(a->q_owner, info.data, info.size); |
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498 | a->q_owner[info.size] = '\0'; |
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499 | break; |
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500 | # endif /* HESIOD */ |
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501 | |
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502 | case UDB_REMOTE: |
---|
503 | /* not yet implemented */ |
---|
504 | break; |
---|
505 | |
---|
506 | case UDB_FORWARD: |
---|
507 | if (bitset(EF_VRFYONLY, e->e_flags)) |
---|
508 | { |
---|
509 | a->q_state = QS_VERIFIED; |
---|
510 | return EX_OK; |
---|
511 | } |
---|
512 | i = strlen(up->udb_fwdhost) + strlen(a->q_user) + 1; |
---|
513 | if (i >= usersize) |
---|
514 | { |
---|
515 | usersize = i + 1; |
---|
516 | user = sm_malloc_x(usersize); |
---|
517 | } |
---|
518 | (void) sm_strlcpyn(user, usersize, 3, |
---|
519 | a->q_user, "@", up->udb_fwdhost); |
---|
520 | message("expanded to %s", user); |
---|
521 | a->q_flags &= ~QSELFREF; |
---|
522 | naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e); |
---|
523 | if (naddrs > 0 && !bitset(QSELFREF, a->q_flags)) |
---|
524 | { |
---|
525 | if (tTd(28, 5)) |
---|
526 | { |
---|
527 | sm_dprintf("udbexpand: QS_EXPANDED "); |
---|
528 | printaddr(a, false); |
---|
529 | } |
---|
530 | a->q_state = QS_EXPANDED; |
---|
531 | } |
---|
532 | breakout = true; |
---|
533 | break; |
---|
534 | |
---|
535 | case UDB_EOLIST: |
---|
536 | breakout = true; |
---|
537 | break; |
---|
538 | |
---|
539 | default: |
---|
540 | /* unknown entry type */ |
---|
541 | break; |
---|
542 | } |
---|
543 | /* XXX if an exception occurs, there is a storage leak */ |
---|
544 | if (user != userbuf) |
---|
545 | sm_free(user); /* XXX */ |
---|
546 | } |
---|
547 | return EX_OK; |
---|
548 | } |
---|
549 | /* |
---|
550 | ** UDBSENDER -- return canonical external name of sender, given local name |
---|
551 | ** |
---|
552 | ** Parameters: |
---|
553 | ** sender -- the name of the sender on the local machine. |
---|
554 | ** rpool -- resource pool from which to allocate result |
---|
555 | ** |
---|
556 | ** Returns: |
---|
557 | ** The external name for this sender, if derivable from the |
---|
558 | ** database. Storage allocated from rpool. |
---|
559 | ** NULL -- if nothing is changed from the database. |
---|
560 | ** |
---|
561 | ** Side Effects: |
---|
562 | ** none. |
---|
563 | */ |
---|
564 | |
---|
565 | char * |
---|
566 | udbsender(sender, rpool) |
---|
567 | char *sender; |
---|
568 | SM_RPOOL_T *rpool; |
---|
569 | { |
---|
570 | return udbmatch(sender, "mailname", rpool); |
---|
571 | } |
---|
572 | /* |
---|
573 | ** UDBMATCH -- match user in field, return result of lookup. |
---|
574 | ** |
---|
575 | ** Parameters: |
---|
576 | ** user -- the name of the user. |
---|
577 | ** field -- the field to lookup. |
---|
578 | ** rpool -- resource pool from which to allocate result |
---|
579 | ** |
---|
580 | ** Returns: |
---|
581 | ** The external name for this sender, if derivable from the |
---|
582 | ** database. Storage allocated from rpool. |
---|
583 | ** NULL -- if nothing is changed from the database. |
---|
584 | ** |
---|
585 | ** Side Effects: |
---|
586 | ** none. |
---|
587 | */ |
---|
588 | |
---|
589 | static char * |
---|
590 | udbmatch(user, field, rpool) |
---|
591 | char *user; |
---|
592 | char *field; |
---|
593 | SM_RPOOL_T *rpool; |
---|
594 | { |
---|
595 | register char *p; |
---|
596 | register struct udbent *up; |
---|
597 | int i; |
---|
598 | int keylen; |
---|
599 | DBT key, info; |
---|
600 | char keybuf[MAXKEY]; |
---|
601 | |
---|
602 | if (tTd(28, 1)) |
---|
603 | sm_dprintf("udbmatch(%s, %s)\n", user, field); |
---|
604 | |
---|
605 | if (!UdbInitialized) |
---|
606 | { |
---|
607 | if (_udbx_init(CurEnv) == EX_TEMPFAIL) |
---|
608 | return NULL; |
---|
609 | } |
---|
610 | |
---|
611 | /* short circuit if no spec */ |
---|
612 | if (UdbSpec == NULL || UdbSpec[0] == '\0') |
---|
613 | return NULL; |
---|
614 | |
---|
615 | /* short circuit name begins with '\\' since it can't possibly match */ |
---|
616 | if (user[0] == '\\') |
---|
617 | return NULL; |
---|
618 | |
---|
619 | /* long names can never match and are a pain to deal with */ |
---|
620 | i = strlen(field); |
---|
621 | if (i < sizeof "maildrop") |
---|
622 | i = sizeof "maildrop"; |
---|
623 | if ((strlen(user) + i) > sizeof keybuf - 4) |
---|
624 | return NULL; |
---|
625 | |
---|
626 | /* names beginning with colons indicate metadata */ |
---|
627 | if (user[0] == ':') |
---|
628 | return NULL; |
---|
629 | |
---|
630 | /* build database key */ |
---|
631 | (void) sm_strlcpyn(keybuf, sizeof keybuf, 3, user, ":", field); |
---|
632 | keylen = strlen(keybuf); |
---|
633 | |
---|
634 | for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++) |
---|
635 | { |
---|
636 | /* |
---|
637 | ** Select action based on entry type. |
---|
638 | */ |
---|
639 | |
---|
640 | switch (up->udb_type) |
---|
641 | { |
---|
642 | # if NEWDB |
---|
643 | case UDB_DBFETCH: |
---|
644 | memset(&key, '\0', sizeof key); |
---|
645 | memset(&info, '\0', sizeof info); |
---|
646 | key.data = keybuf; |
---|
647 | key.size = keylen; |
---|
648 | # if DB_VERSION_MAJOR < 2 |
---|
649 | i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0); |
---|
650 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
651 | i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL, |
---|
652 | &key, &info, 0); |
---|
653 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
654 | if (i != 0 || info.size <= 0) |
---|
655 | { |
---|
656 | if (tTd(28, 2)) |
---|
657 | sm_dprintf("udbmatch: no match on %s (%d) via db\n", |
---|
658 | keybuf, keylen); |
---|
659 | continue; |
---|
660 | } |
---|
661 | |
---|
662 | p = sm_rpool_malloc_x(rpool, info.size + 1); |
---|
663 | memmove(p, info.data, info.size); |
---|
664 | p[info.size] = '\0'; |
---|
665 | if (tTd(28, 1)) |
---|
666 | sm_dprintf("udbmatch ==> %s\n", p); |
---|
667 | return p; |
---|
668 | # endif /* NEWDB */ |
---|
669 | |
---|
670 | # if HESIOD |
---|
671 | case UDB_HESIOD: |
---|
672 | key.data = keybuf; |
---|
673 | key.size = keylen; |
---|
674 | i = hes_udb_get(&key, &info); |
---|
675 | if (i != 0 || info.size <= 0) |
---|
676 | { |
---|
677 | if (tTd(28, 2)) |
---|
678 | sm_dprintf("udbmatch: no match on %s (%d) via hesiod\n", |
---|
679 | keybuf, keylen); |
---|
680 | continue; |
---|
681 | } |
---|
682 | |
---|
683 | p = sm_rpool_malloc_x(rpool, info.size + 1); |
---|
684 | memmove(p, info.data, info.size); |
---|
685 | p[info.size] = '\0'; |
---|
686 | if (tTd(28, 1)) |
---|
687 | sm_dprintf("udbmatch ==> %s\n", p); |
---|
688 | return p; |
---|
689 | # endif /* HESIOD */ |
---|
690 | } |
---|
691 | } |
---|
692 | |
---|
693 | if (strcmp(field, "mailname") != 0) |
---|
694 | return NULL; |
---|
695 | |
---|
696 | /* |
---|
697 | ** Nothing yet. Search again for a default case. But only |
---|
698 | ** use it if we also have a forward (:maildrop) pointer already |
---|
699 | ** in the database. |
---|
700 | */ |
---|
701 | |
---|
702 | /* build database key */ |
---|
703 | (void) sm_strlcpyn(keybuf, sizeof keybuf, 2, user, ":maildrop"); |
---|
704 | keylen = strlen(keybuf); |
---|
705 | |
---|
706 | for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++) |
---|
707 | { |
---|
708 | switch (up->udb_type) |
---|
709 | { |
---|
710 | # if NEWDB |
---|
711 | case UDB_DBFETCH: |
---|
712 | /* get the default case for this database */ |
---|
713 | if (up->udb_default == NULL) |
---|
714 | { |
---|
715 | memset(&key, '\0', sizeof key); |
---|
716 | memset(&info, '\0', sizeof info); |
---|
717 | key.data = ":default:mailname"; |
---|
718 | key.size = strlen(key.data); |
---|
719 | # if DB_VERSION_MAJOR < 2 |
---|
720 | i = (*up->udb_dbp->get)(up->udb_dbp, |
---|
721 | &key, &info, 0); |
---|
722 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
723 | i = errno = (*up->udb_dbp->get)(up->udb_dbp, |
---|
724 | NULL, &key, |
---|
725 | &info, 0); |
---|
726 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
727 | if (i != 0 || info.size <= 0) |
---|
728 | { |
---|
729 | /* no default case */ |
---|
730 | up->udb_default = ""; |
---|
731 | continue; |
---|
732 | } |
---|
733 | |
---|
734 | /* save the default case */ |
---|
735 | up->udb_default = sm_pmalloc_x(info.size + 1); |
---|
736 | memmove(up->udb_default, info.data, info.size); |
---|
737 | up->udb_default[info.size] = '\0'; |
---|
738 | } |
---|
739 | else if (up->udb_default[0] == '\0') |
---|
740 | continue; |
---|
741 | |
---|
742 | /* we have a default case -- verify user:maildrop */ |
---|
743 | memset(&key, '\0', sizeof key); |
---|
744 | memset(&info, '\0', sizeof info); |
---|
745 | key.data = keybuf; |
---|
746 | key.size = keylen; |
---|
747 | # if DB_VERSION_MAJOR < 2 |
---|
748 | i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0); |
---|
749 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
750 | i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL, |
---|
751 | &key, &info, 0); |
---|
752 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
753 | if (i != 0 || info.size <= 0) |
---|
754 | { |
---|
755 | /* nope -- no aliasing for this user */ |
---|
756 | continue; |
---|
757 | } |
---|
758 | |
---|
759 | /* they exist -- build the actual address */ |
---|
760 | i = strlen(user) + strlen(up->udb_default) + 2; |
---|
761 | p = sm_rpool_malloc_x(rpool, i); |
---|
762 | (void) sm_strlcpyn(p, i, 3, user, "@", up->udb_default); |
---|
763 | if (tTd(28, 1)) |
---|
764 | sm_dprintf("udbmatch ==> %s\n", p); |
---|
765 | return p; |
---|
766 | # endif /* NEWDB */ |
---|
767 | |
---|
768 | # if HESIOD |
---|
769 | case UDB_HESIOD: |
---|
770 | /* get the default case for this database */ |
---|
771 | if (up->udb_default == NULL) |
---|
772 | { |
---|
773 | key.data = ":default:mailname"; |
---|
774 | key.size = strlen(key.data); |
---|
775 | i = hes_udb_get(&key, &info); |
---|
776 | |
---|
777 | if (i != 0 || info.size <= 0) |
---|
778 | { |
---|
779 | /* no default case */ |
---|
780 | up->udb_default = ""; |
---|
781 | continue; |
---|
782 | } |
---|
783 | |
---|
784 | /* save the default case */ |
---|
785 | up->udb_default = sm_pmalloc_x(info.size + 1); |
---|
786 | memmove(up->udb_default, info.data, info.size); |
---|
787 | up->udb_default[info.size] = '\0'; |
---|
788 | } |
---|
789 | else if (up->udb_default[0] == '\0') |
---|
790 | continue; |
---|
791 | |
---|
792 | /* we have a default case -- verify user:maildrop */ |
---|
793 | key.data = keybuf; |
---|
794 | key.size = keylen; |
---|
795 | i = hes_udb_get(&key, &info); |
---|
796 | if (i != 0 || info.size <= 0) |
---|
797 | { |
---|
798 | /* nope -- no aliasing for this user */ |
---|
799 | continue; |
---|
800 | } |
---|
801 | |
---|
802 | /* they exist -- build the actual address */ |
---|
803 | i = strlen(user) + strlen(up->udb_default) + 2; |
---|
804 | p = sm_rpool_malloc_x(rpool, i); |
---|
805 | (void) sm_strlcpyn(p, i, 3, user, "@", up->udb_default); |
---|
806 | if (tTd(28, 1)) |
---|
807 | sm_dprintf("udbmatch ==> %s\n", p); |
---|
808 | return p; |
---|
809 | break; |
---|
810 | # endif /* HESIOD */ |
---|
811 | } |
---|
812 | } |
---|
813 | |
---|
814 | /* still nothing.... too bad */ |
---|
815 | return NULL; |
---|
816 | } |
---|
817 | /* |
---|
818 | ** UDB_MAP_LOOKUP -- look up arbitrary entry in user database map |
---|
819 | ** |
---|
820 | ** Parameters: |
---|
821 | ** map -- the map being queried. |
---|
822 | ** name -- the name to look up. |
---|
823 | ** av -- arguments to the map lookup. |
---|
824 | ** statp -- to get any error status. |
---|
825 | ** |
---|
826 | ** Returns: |
---|
827 | ** NULL if name not found in map. |
---|
828 | ** The rewritten name otherwise. |
---|
829 | */ |
---|
830 | |
---|
831 | /* ARGSUSED3 */ |
---|
832 | char * |
---|
833 | udb_map_lookup(map, name, av, statp) |
---|
834 | MAP *map; |
---|
835 | char *name; |
---|
836 | char **av; |
---|
837 | int *statp; |
---|
838 | { |
---|
839 | char *val; |
---|
840 | char *key; |
---|
841 | char *SM_NONVOLATILE result = NULL; |
---|
842 | char keybuf[MAXNAME + 1]; |
---|
843 | |
---|
844 | if (tTd(28, 20) || tTd(38, 20)) |
---|
845 | sm_dprintf("udb_map_lookup(%s, %s)\n", map->map_mname, name); |
---|
846 | |
---|
847 | if (bitset(MF_NOFOLDCASE, map->map_mflags)) |
---|
848 | { |
---|
849 | key = name; |
---|
850 | } |
---|
851 | else |
---|
852 | { |
---|
853 | int keysize = strlen(name); |
---|
854 | |
---|
855 | if (keysize > sizeof keybuf - 1) |
---|
856 | keysize = sizeof keybuf - 1; |
---|
857 | memmove(keybuf, name, keysize); |
---|
858 | keybuf[keysize] = '\0'; |
---|
859 | makelower(keybuf); |
---|
860 | key = keybuf; |
---|
861 | } |
---|
862 | val = udbmatch(key, map->map_file, NULL); |
---|
863 | if (val == NULL) |
---|
864 | return NULL; |
---|
865 | SM_TRY |
---|
866 | if (bitset(MF_MATCHONLY, map->map_mflags)) |
---|
867 | result = map_rewrite(map, name, strlen(name), NULL); |
---|
868 | else |
---|
869 | result = map_rewrite(map, val, strlen(val), av); |
---|
870 | SM_FINALLY |
---|
871 | sm_free(val); |
---|
872 | SM_END_TRY |
---|
873 | return result; |
---|
874 | } |
---|
875 | /* |
---|
876 | ** _UDBX_INIT -- parse the UDB specification, opening any valid entries. |
---|
877 | ** |
---|
878 | ** Parameters: |
---|
879 | ** e -- the current envelope. |
---|
880 | ** |
---|
881 | ** Returns: |
---|
882 | ** EX_TEMPFAIL -- if it appeared it couldn't get hold of a |
---|
883 | ** database due to a host being down or some similar |
---|
884 | ** (recoverable) situation. |
---|
885 | ** EX_OK -- otherwise. |
---|
886 | ** |
---|
887 | ** Side Effects: |
---|
888 | ** Fills in the UdbEnts structure from UdbSpec. |
---|
889 | */ |
---|
890 | |
---|
891 | # define MAXUDBOPTS 27 |
---|
892 | |
---|
893 | static int |
---|
894 | _udbx_init(e) |
---|
895 | ENVELOPE *e; |
---|
896 | { |
---|
897 | int ents = 0; |
---|
898 | register char *p; |
---|
899 | register struct udbent *up; |
---|
900 | |
---|
901 | if (UdbInitialized) |
---|
902 | return EX_OK; |
---|
903 | |
---|
904 | # ifdef UDB_DEFAULT_SPEC |
---|
905 | if (UdbSpec == NULL) |
---|
906 | UdbSpec = UDB_DEFAULT_SPEC; |
---|
907 | # endif /* UDB_DEFAULT_SPEC */ |
---|
908 | |
---|
909 | p = UdbSpec; |
---|
910 | up = UdbEnts; |
---|
911 | while (p != NULL) |
---|
912 | { |
---|
913 | char *spec; |
---|
914 | int l; |
---|
915 | struct udb_option opts[MAXUDBOPTS + 1]; |
---|
916 | |
---|
917 | while (*p == ' ' || *p == '\t' || *p == ',') |
---|
918 | p++; |
---|
919 | if (*p == '\0') |
---|
920 | break; |
---|
921 | spec = p; |
---|
922 | p = strchr(p, ','); |
---|
923 | if (p != NULL) |
---|
924 | *p++ = '\0'; |
---|
925 | |
---|
926 | if (ents >= MAXUDBENT) |
---|
927 | { |
---|
928 | syserr("Maximum number of UDB entries exceeded"); |
---|
929 | break; |
---|
930 | } |
---|
931 | |
---|
932 | /* extract options */ |
---|
933 | (void) _udb_parsespec(spec, opts, MAXUDBOPTS); |
---|
934 | |
---|
935 | /* |
---|
936 | ** Decode database specification. |
---|
937 | ** |
---|
938 | ** In the sendmail tradition, the leading character |
---|
939 | ** defines the semantics of the rest of the entry. |
---|
940 | ** |
---|
941 | ** @hostname -- forward email to the indicated host. |
---|
942 | ** This should be the last in the list, |
---|
943 | ** since it always matches the input. |
---|
944 | ** /dbname -- search the named database on the local |
---|
945 | ** host using the Berkeley db package. |
---|
946 | ** Hesiod -- search the named database with BIND |
---|
947 | ** using the MIT Hesiod package. |
---|
948 | */ |
---|
949 | |
---|
950 | switch (*spec) |
---|
951 | { |
---|
952 | case '@': /* forward to remote host */ |
---|
953 | up->udb_type = UDB_FORWARD; |
---|
954 | up->udb_pid = CurrentPid; |
---|
955 | up->udb_fwdhost = spec + 1; |
---|
956 | ents++; |
---|
957 | up++; |
---|
958 | break; |
---|
959 | |
---|
960 | # if HESIOD |
---|
961 | case 'h': /* use hesiod */ |
---|
962 | case 'H': |
---|
963 | if (sm_strcasecmp(spec, "hesiod") != 0) |
---|
964 | goto badspec; |
---|
965 | up->udb_type = UDB_HESIOD; |
---|
966 | up->udb_pid = CurrentPid; |
---|
967 | ents++; |
---|
968 | up++; |
---|
969 | break; |
---|
970 | # endif /* HESIOD */ |
---|
971 | |
---|
972 | # if NEWDB |
---|
973 | case '/': /* look up remote name */ |
---|
974 | l = strlen(spec); |
---|
975 | if (l > 3 && strcmp(&spec[l - 3], ".db") == 0) |
---|
976 | { |
---|
977 | up->udb_dbname = spec; |
---|
978 | } |
---|
979 | else |
---|
980 | { |
---|
981 | up->udb_dbname = sm_pmalloc_x(l + 4); |
---|
982 | (void) sm_strlcpyn(up->udb_dbname, l + 4, 2, |
---|
983 | spec, ".db"); |
---|
984 | } |
---|
985 | errno = 0; |
---|
986 | # if DB_VERSION_MAJOR < 2 |
---|
987 | up->udb_dbp = dbopen(up->udb_dbname, O_RDONLY, |
---|
988 | 0644, DB_BTREE, NULL); |
---|
989 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
990 | { |
---|
991 | int flags = DB_RDONLY; |
---|
992 | # if DB_VERSION_MAJOR > 2 |
---|
993 | int ret; |
---|
994 | # endif /* DB_VERSION_MAJOR > 2 */ |
---|
995 | |
---|
996 | SM_DB_FLAG_ADD(flags); |
---|
997 | up->udb_dbp = NULL; |
---|
998 | # if DB_VERSION_MAJOR > 2 |
---|
999 | ret = db_create(&up->udb_dbp, NULL, 0); |
---|
1000 | if (ret != 0) |
---|
1001 | { |
---|
1002 | (void) up->udb_dbp->close(up->udb_dbp, |
---|
1003 | 0); |
---|
1004 | up->udb_dbp = NULL; |
---|
1005 | } |
---|
1006 | else |
---|
1007 | { |
---|
1008 | ret = up->udb_dbp->open(up->udb_dbp, |
---|
1009 | DBTXN |
---|
1010 | up->udb_dbname, |
---|
1011 | NULL, |
---|
1012 | DB_BTREE, |
---|
1013 | flags, |
---|
1014 | 0644); |
---|
1015 | if (ret != 0) |
---|
1016 | { |
---|
1017 | #ifdef DB_OLD_VERSION |
---|
1018 | if (ret == DB_OLD_VERSION) |
---|
1019 | ret = EINVAL; |
---|
1020 | #endif /* DB_OLD_VERSION */ |
---|
1021 | (void) up->udb_dbp->close(up->udb_dbp, 0); |
---|
1022 | up->udb_dbp = NULL; |
---|
1023 | } |
---|
1024 | } |
---|
1025 | errno = ret; |
---|
1026 | # else /* DB_VERSION_MAJOR > 2 */ |
---|
1027 | errno = db_open(up->udb_dbname, DB_BTREE, |
---|
1028 | flags, 0644, NULL, |
---|
1029 | NULL, &up->udb_dbp); |
---|
1030 | # endif /* DB_VERSION_MAJOR > 2 */ |
---|
1031 | } |
---|
1032 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1033 | if (up->udb_dbp == NULL) |
---|
1034 | { |
---|
1035 | if (tTd(28, 1)) |
---|
1036 | { |
---|
1037 | int save_errno = errno; |
---|
1038 | |
---|
1039 | # if DB_VERSION_MAJOR < 2 |
---|
1040 | sm_dprintf("dbopen(%s): %s\n", |
---|
1041 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
1042 | sm_dprintf("db_open(%s): %s\n", |
---|
1043 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1044 | up->udb_dbname, |
---|
1045 | sm_errstring(errno)); |
---|
1046 | errno = save_errno; |
---|
1047 | } |
---|
1048 | if (errno != ENOENT && errno != EACCES) |
---|
1049 | { |
---|
1050 | if (LogLevel > 2) |
---|
1051 | sm_syslog(LOG_ERR, e->e_id, |
---|
1052 | # if DB_VERSION_MAJOR < 2 |
---|
1053 | "dbopen(%s): %s", |
---|
1054 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
1055 | "db_open(%s): %s", |
---|
1056 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1057 | up->udb_dbname, |
---|
1058 | sm_errstring(errno)); |
---|
1059 | up->udb_type = UDB_EOLIST; |
---|
1060 | if (up->udb_dbname != spec) |
---|
1061 | sm_free(up->udb_dbname); /* XXX */ |
---|
1062 | goto tempfail; |
---|
1063 | } |
---|
1064 | if (up->udb_dbname != spec) |
---|
1065 | sm_free(up->udb_dbname); /* XXX */ |
---|
1066 | break; |
---|
1067 | } |
---|
1068 | if (tTd(28, 1)) |
---|
1069 | { |
---|
1070 | # if DB_VERSION_MAJOR < 2 |
---|
1071 | sm_dprintf("_udbx_init: dbopen(%s)\n", |
---|
1072 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
1073 | sm_dprintf("_udbx_init: db_open(%s)\n", |
---|
1074 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1075 | up->udb_dbname); |
---|
1076 | } |
---|
1077 | up->udb_type = UDB_DBFETCH; |
---|
1078 | up->udb_pid = CurrentPid; |
---|
1079 | ents++; |
---|
1080 | up++; |
---|
1081 | break; |
---|
1082 | # endif /* NEWDB */ |
---|
1083 | |
---|
1084 | default: |
---|
1085 | # if HESIOD |
---|
1086 | badspec: |
---|
1087 | # endif /* HESIOD */ |
---|
1088 | syserr("Unknown UDB spec %s", spec); |
---|
1089 | break; |
---|
1090 | } |
---|
1091 | } |
---|
1092 | up->udb_type = UDB_EOLIST; |
---|
1093 | |
---|
1094 | if (tTd(28, 4)) |
---|
1095 | { |
---|
1096 | for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++) |
---|
1097 | { |
---|
1098 | switch (up->udb_type) |
---|
1099 | { |
---|
1100 | case UDB_REMOTE: |
---|
1101 | sm_dprintf("REMOTE: addr %s, timeo %d\n", |
---|
1102 | anynet_ntoa((SOCKADDR *) &up->udb_addr), |
---|
1103 | up->udb_timeout); |
---|
1104 | break; |
---|
1105 | |
---|
1106 | case UDB_DBFETCH: |
---|
1107 | # if NEWDB |
---|
1108 | sm_dprintf("FETCH: file %s\n", |
---|
1109 | up->udb_dbname); |
---|
1110 | # else /* NEWDB */ |
---|
1111 | sm_dprintf("FETCH\n"); |
---|
1112 | # endif /* NEWDB */ |
---|
1113 | break; |
---|
1114 | |
---|
1115 | case UDB_FORWARD: |
---|
1116 | sm_dprintf("FORWARD: host %s\n", |
---|
1117 | up->udb_fwdhost); |
---|
1118 | break; |
---|
1119 | |
---|
1120 | case UDB_HESIOD: |
---|
1121 | sm_dprintf("HESIOD\n"); |
---|
1122 | break; |
---|
1123 | |
---|
1124 | default: |
---|
1125 | sm_dprintf("UNKNOWN\n"); |
---|
1126 | break; |
---|
1127 | } |
---|
1128 | } |
---|
1129 | } |
---|
1130 | |
---|
1131 | UdbInitialized = true; |
---|
1132 | errno = 0; |
---|
1133 | return EX_OK; |
---|
1134 | |
---|
1135 | /* |
---|
1136 | ** On temporary failure, back out anything we've already done |
---|
1137 | */ |
---|
1138 | |
---|
1139 | tempfail: |
---|
1140 | # if NEWDB |
---|
1141 | for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++) |
---|
1142 | { |
---|
1143 | if (up->udb_type == UDB_DBFETCH) |
---|
1144 | { |
---|
1145 | # if DB_VERSION_MAJOR < 2 |
---|
1146 | (*up->udb_dbp->close)(up->udb_dbp); |
---|
1147 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
1148 | errno = (*up->udb_dbp->close)(up->udb_dbp, 0); |
---|
1149 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1150 | if (tTd(28, 1)) |
---|
1151 | sm_dprintf("_udbx_init: db->close(%s)\n", |
---|
1152 | up->udb_dbname); |
---|
1153 | } |
---|
1154 | } |
---|
1155 | # endif /* NEWDB */ |
---|
1156 | return EX_TEMPFAIL; |
---|
1157 | } |
---|
1158 | |
---|
1159 | static int |
---|
1160 | _udb_parsespec(udbspec, opt, maxopts) |
---|
1161 | char *udbspec; |
---|
1162 | struct udb_option opt[]; |
---|
1163 | int maxopts; |
---|
1164 | { |
---|
1165 | register char *spec; |
---|
1166 | register char *spec_end; |
---|
1167 | register int optnum; |
---|
1168 | |
---|
1169 | spec_end = strchr(udbspec, ':'); |
---|
1170 | for (optnum = 0; optnum < maxopts && (spec = spec_end) != NULL; optnum++) |
---|
1171 | { |
---|
1172 | register char *p; |
---|
1173 | |
---|
1174 | while (isascii(*spec) && isspace(*spec)) |
---|
1175 | spec++; |
---|
1176 | spec_end = strchr(spec, ':'); |
---|
1177 | if (spec_end != NULL) |
---|
1178 | *spec_end++ = '\0'; |
---|
1179 | |
---|
1180 | opt[optnum].udbo_name = spec; |
---|
1181 | opt[optnum].udbo_val = NULL; |
---|
1182 | p = strchr(spec, '='); |
---|
1183 | if (p != NULL) |
---|
1184 | opt[optnum].udbo_val = ++p; |
---|
1185 | } |
---|
1186 | return optnum; |
---|
1187 | } |
---|
1188 | /* |
---|
1189 | ** _UDBX_CLOSE -- close all file based UDB entries. |
---|
1190 | ** |
---|
1191 | ** Parameters: |
---|
1192 | ** none |
---|
1193 | ** |
---|
1194 | ** Returns: |
---|
1195 | ** none |
---|
1196 | */ |
---|
1197 | void |
---|
1198 | _udbx_close() |
---|
1199 | { |
---|
1200 | struct udbent *up; |
---|
1201 | |
---|
1202 | if (!UdbInitialized) |
---|
1203 | return; |
---|
1204 | |
---|
1205 | for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++) |
---|
1206 | { |
---|
1207 | if (up->udb_pid != CurrentPid) |
---|
1208 | continue; |
---|
1209 | |
---|
1210 | # if NEWDB |
---|
1211 | if (up->udb_type == UDB_DBFETCH) |
---|
1212 | { |
---|
1213 | # if DB_VERSION_MAJOR < 2 |
---|
1214 | (*up->udb_dbp->close)(up->udb_dbp); |
---|
1215 | # else /* DB_VERSION_MAJOR < 2 */ |
---|
1216 | errno = (*up->udb_dbp->close)(up->udb_dbp, 0); |
---|
1217 | # endif /* DB_VERSION_MAJOR < 2 */ |
---|
1218 | } |
---|
1219 | if (tTd(28, 1)) |
---|
1220 | sm_dprintf("_udbx_init: db->close(%s)\n", |
---|
1221 | up->udb_dbname); |
---|
1222 | # endif /* NEWDB */ |
---|
1223 | } |
---|
1224 | } |
---|
1225 | |
---|
1226 | # if HESIOD |
---|
1227 | |
---|
1228 | static int |
---|
1229 | hes_udb_get(key, info) |
---|
1230 | DBT *key; |
---|
1231 | DBT *info; |
---|
1232 | { |
---|
1233 | char *name, *type; |
---|
1234 | char **hp; |
---|
1235 | char kbuf[MAXKEY + 1]; |
---|
1236 | |
---|
1237 | if (sm_strlcpy(kbuf, key->data, sizeof kbuf) >= sizeof kbuf) |
---|
1238 | return 0; |
---|
1239 | name = kbuf; |
---|
1240 | type = strrchr(name, ':'); |
---|
1241 | if (type == NULL) |
---|
1242 | return 1; |
---|
1243 | *type++ = '\0'; |
---|
1244 | if (strchr(name, '@') != NULL) |
---|
1245 | return 1; |
---|
1246 | |
---|
1247 | if (tTd(28, 1)) |
---|
1248 | sm_dprintf("hes_udb_get(%s, %s)\n", name, type); |
---|
1249 | |
---|
1250 | /* make the hesiod query */ |
---|
1251 | # ifdef HESIOD_INIT |
---|
1252 | if (HesiodContext == NULL && hesiod_init(&HesiodContext) != 0) |
---|
1253 | return -1; |
---|
1254 | hp = hesiod_resolve(HesiodContext, name, type); |
---|
1255 | # else /* HESIOD_INIT */ |
---|
1256 | hp = hes_resolve(name, type); |
---|
1257 | # endif /* HESIOD_INIT */ |
---|
1258 | *--type = ':'; |
---|
1259 | # ifdef HESIOD_INIT |
---|
1260 | if (hp == NULL) |
---|
1261 | return 1; |
---|
1262 | if (*hp == NULL) |
---|
1263 | { |
---|
1264 | hesiod_free_list(HesiodContext, hp); |
---|
1265 | if (errno == ECONNREFUSED || errno == EMSGSIZE) |
---|
1266 | return -1; |
---|
1267 | return 1; |
---|
1268 | } |
---|
1269 | # else /* HESIOD_INIT */ |
---|
1270 | if (hp == NULL || hp[0] == NULL) |
---|
1271 | { |
---|
1272 | /* network problem or timeout */ |
---|
1273 | if (hes_error() == HES_ER_NET) |
---|
1274 | return -1; |
---|
1275 | |
---|
1276 | return 1; |
---|
1277 | } |
---|
1278 | # endif /* HESIOD_INIT */ |
---|
1279 | else |
---|
1280 | { |
---|
1281 | /* |
---|
1282 | ** If there are multiple matches, just return the |
---|
1283 | ** first one. |
---|
1284 | ** |
---|
1285 | ** XXX These should really be returned; for example, |
---|
1286 | ** XXX it is legal for :maildrop to be multi-valued. |
---|
1287 | */ |
---|
1288 | |
---|
1289 | info->data = hp[0]; |
---|
1290 | info->size = (size_t) strlen(info->data); |
---|
1291 | } |
---|
1292 | |
---|
1293 | if (tTd(28, 80)) |
---|
1294 | sm_dprintf("hes_udb_get => %s\n", *hp); |
---|
1295 | |
---|
1296 | return 0; |
---|
1297 | } |
---|
1298 | # endif /* HESIOD */ |
---|
1299 | |
---|
1300 | #else /* USERDB */ |
---|
1301 | |
---|
1302 | int |
---|
1303 | udbexpand(a, sendq, aliaslevel, e) |
---|
1304 | ADDRESS *a; |
---|
1305 | ADDRESS **sendq; |
---|
1306 | int aliaslevel; |
---|
1307 | ENVELOPE *e; |
---|
1308 | { |
---|
1309 | return EX_OK; |
---|
1310 | } |
---|
1311 | |
---|
1312 | #endif /* USERDB */ |
---|