1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
6 /* See the file NOTICE for conditions of use and distribution. */
9 /* The "type" field in each item is a set of bit flags:
11 lookup_querystyle => this is a query-style lookup,
12 else single-key (+ file) style
13 lookup_absfile => an absolute file name is required,
14 (for single-key style only)
17 typedef struct lookup_info {
18 uschar *name; /* e.g. "lsearch" */
19 int type; /* query/singlekey/abs-file */
20 void *(*open)( /* open function */
21 uschar *, /* file name for those that have one */
22 uschar **); /* for error message */
23 BOOL (*check)( /* file checking function */
25 uschar *, /* file name */
26 int, /* modemask for file checking */
27 uid_t *, /* owners for file checking */
28 gid_t *, /* owngroups for file checking */
29 uschar **); /* for error messages */
30 int (*find)( /* find function */
32 uschar *, /* file name or NULL */
33 const uschar *, /* key or query */
34 int, /* length of key or query */
35 uschar **, /* for returning answer */
36 uschar **, /* for error message */
37 uint *); /* cache TTL, sconds */
38 void (*close)( /* close function */
40 void (*tidy)(void); /* tidy function */
41 uschar *(*quote)( /* quoting function */
42 uschar *, /* string to quote */
43 uschar *); /* additional data from quote name */
44 void (*version_report)( /* diagnostic function */
45 FILE *); /* fh to write to */
48 /* This magic number is used by the following lookup_module_info structure
49 for checking API compatibility. It used to be equivalent to the string"LMM3" */
50 #define LOOKUP_MODULE_INFO_MAGIC 0x4c4d4933
51 /* Version 2 adds: version_report */
52 /* Version 3 change: non/cache becomes TTL in seconds */
54 typedef struct lookup_module_info {
56 lookup_info **lookups;
60 /* End of lookupapi.h */