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   .name = US"nis",                      /* lookup name */
 110   .type = 0,                            /* not abs file, not query style*/
 111   .open = nis_open,                     /* open function */
 112   .check = NULL,                        /* check function */
 113   .find = nis_find,                     /* find function */
 114   .close = NULL,                        /* no close function */
 115   .tidy = NULL,                         /* no tidy function */
 116   .quote = NULL,                        /* no quoting function */
 117   .version_report = nis_version_report             /* version reporting */
 118 };
 119
 120 static lookup_info nis0_lookup_info = {
 121   .name = US"nis0",                     /* lookup name */
 122   .type = 0,                            /* not absfile, not query style */
 123   .open = nis_open,                     /* sic */         /* open function */
 124   .check = NULL,                        /* check function */
 125   .find = nis0_find,                    /* find function */
 126   .close = NULL,                        /* no close function */
 127   .tidy = NULL,                         /* no tidy function */
 128   .quote = NULL,                        /* no quoting function */
 129   .version_report = 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 */