6b7e7a067616c1fe83af0c0f6b94f51cb5030ee7
[exim.git] / src / src / lookups / nis.c
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
6 /* See the file NOTICE for conditions of use and distribution. */
7
8 #include "../exim.h"
9 #include "lf_functions.h"
10
11 #include <rpcsvc/ypclnt.h>
12
13
14 /*************************************************
15 * Open entry point *
16 *************************************************/
17
18 /* See local README for interface description. This serves for both
19 the "nis" and "nis0" lookup types. */
20
21 static void *
22 nis_open(const uschar * filename, uschar ** errmsg)
23 {
24 char *nis_domain;
25 if (yp_get_default_domain(&nis_domain) != 0)
26 {
27 *errmsg = US"failed to get default NIS domain";
28 return NULL;
29 }
30 return nis_domain;
31 }
32
33
34
35 /*************************************************
36 * Find entry point for nis *
37 *************************************************/
38
39 /* See local README for interface description. A separate function is used
40 for nis0 because they are so short it isn't worth trying to use any common
41 code. */
42
43 static int
44 nis_find(void * handle, const uschar * filename, const uschar * keystring,
45 int length, uschar ** result, uschar ** errmsg, uint * do_cache,
46 const uschar * opts)
47 {
48 int rc;
49 uschar *nis_data;
50 int nis_data_length;
51 do_cache = do_cache; /* Placate picky compilers */
52 if ((rc = yp_match(CCS handle, CCS filename, CCS keystring, length,
53 CSS &nis_data, &nis_data_length)) == 0)
54 {
55 *result = string_copy(nis_data);
56 (*result)[nis_data_length] = 0; /* remove final '\n' */
57 return OK;
58 }
59 return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
60 }
61
62
63
64 /*************************************************
65 * Find entry point for nis0 *
66 *************************************************/
67
68 /* See local README for interface description. */
69
70 static int
71 nis0_find(void * handle, const uschar * filename, const uschar * keystring,
72 int length, uschar ** result, uschar ** errmsg, uint * do_cache,
73 const uschar * opts)
74 {
75 int rc;
76 uschar *nis_data;
77 int nis_data_length;
78 do_cache = do_cache; /* Placate picky compilers */
79 if ((rc = yp_match(CCS handle, CCS filename, CCS keystring, length + 1,
80 CSS &nis_data, &nis_data_length)) == 0)
81 {
82 *result = string_copy(nis_data);
83 (*result)[nis_data_length] = 0; /* remove final '\n' */
84 return OK;
85 }
86 return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
87 }
88
89
90
91 /*************************************************
92 * Version reporting entry point *
93 *************************************************/
94
95 /* See local README for interface description. */
96
97 #include "../version.h"
98
99 void
100 nis_version_report(FILE *f)
101 {
102 #ifdef DYNLOOKUP
103 fprintf(f, "Library version: NIS: Exim version %s\n", EXIM_VERSION_STR);
104 #endif
105 }
106
107
108 static lookup_info nis_lookup_info = {
109 US"nis", /* lookup name */
110 0, /* not abs file, not query style*/
111 nis_open, /* open function */
112 NULL, /* check function */
113 nis_find, /* find function */
114 NULL, /* no close function */
115 NULL, /* no tidy function */
116 NULL, /* no quoting function */
117 nis_version_report /* version reporting */
118 };
119
120 static lookup_info nis0_lookup_info = {
121 US"nis0", /* lookup name */
122 0, /* not absfile, not query style */
123 nis_open, /* sic */ /* open function */
124 NULL, /* check function */
125 nis0_find, /* find function */
126 NULL, /* no close function */
127 NULL, /* no tidy function */
128 NULL, /* no quoting function */
129 NULL /* no version reporting (redundant) */
130 };
131
132 #ifdef DYNLOOKUP
133 #define nis_lookup_module_info _lookup_module_info
134 #endif
135
136 static lookup_info *_lookup_list[] = { &nis_lookup_info, &nis0_lookup_info };
137 lookup_module_info nis_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 2 };
138
139 /* End of lookups/nis.c */