| 1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* Copyright (c) University of Cambridge 1995 - 2009 */ |
| 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(uschar *filename, uschar **errmsg) |
| 23 | { |
| 24 | char *nis_domain; |
| 25 | if (yp_get_default_domain(&nis_domain) != 0) |
| 26 | { |
| 27 | *errmsg = string_sprintf("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, uschar *filename, uschar *keystring, int length, |
| 45 | uschar **result, uschar **errmsg, BOOL *do_cache) |
| 46 | { |
| 47 | int rc; |
| 48 | uschar *nis_data; |
| 49 | int nis_data_length; |
| 50 | do_cache = do_cache; /* Placate picky compilers */ |
| 51 | if ((rc = yp_match(CS handle, CS filename, CS keystring, length, |
| 52 | CSS &nis_data, &nis_data_length)) == 0) |
| 53 | { |
| 54 | *result = string_copy(nis_data); |
| 55 | (*result)[nis_data_length] = 0; /* remove final '\n' */ |
| 56 | return OK; |
| 57 | } |
| 58 | return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER; |
| 59 | } |
| 60 | |
| 61 | |
| 62 | |
| 63 | /************************************************* |
| 64 | * Find entry point for nis0 * |
| 65 | *************************************************/ |
| 66 | |
| 67 | /* See local README for interface description. */ |
| 68 | |
| 69 | static int |
| 70 | nis0_find(void *handle, uschar *filename, uschar *keystring, int length, |
| 71 | uschar **result, uschar **errmsg, BOOL *do_cache) |
| 72 | { |
| 73 | int rc; |
| 74 | uschar *nis_data; |
| 75 | int nis_data_length; |
| 76 | do_cache = do_cache; /* Placate picky compilers */ |
| 77 | if ((rc = yp_match(CS handle, CS filename, CS keystring, length + 1, |
| 78 | CSS &nis_data, &nis_data_length)) == 0) |
| 79 | { |
| 80 | *result = string_copy(nis_data); |
| 81 | (*result)[nis_data_length] = 0; /* remove final '\n' */ |
| 82 | return OK; |
| 83 | } |
| 84 | return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER; |
| 85 | } |
| 86 | |
| 87 | |
| 88 | |
| 89 | /************************************************* |
| 90 | * Version reporting entry point * |
| 91 | *************************************************/ |
| 92 | |
| 93 | /* See local README for interface description. */ |
| 94 | |
| 95 | #include "../version.h" |
| 96 | |
| 97 | void |
| 98 | nis_version_report(FILE *f) |
| 99 | { |
| 100 | #ifdef DYNLOOKUP |
| 101 | fprintf(f, "Library version: NIS: Exim version %s\n", EXIM_VERSION_STR); |
| 102 | #endif |
| 103 | } |
| 104 | |
| 105 | |
| 106 | static lookup_info nis_lookup_info = { |
| 107 | US"nis", /* lookup name */ |
| 108 | 0, /* not abs file, not query style*/ |
| 109 | nis_open, /* open function */ |
| 110 | NULL, /* check function */ |
| 111 | nis_find, /* find function */ |
| 112 | NULL, /* no close function */ |
| 113 | NULL, /* no tidy function */ |
| 114 | NULL, /* no quoting function */ |
| 115 | nis_version_report /* version reporting */ |
| 116 | }; |
| 117 | |
| 118 | static lookup_info nis0_lookup_info = { |
| 119 | US"nis0", /* lookup name */ |
| 120 | 0, /* not absfile, not query style */ |
| 121 | nis_open, /* sic */ /* open function */ |
| 122 | NULL, /* check function */ |
| 123 | nis0_find, /* find function */ |
| 124 | NULL, /* no close function */ |
| 125 | NULL, /* no tidy function */ |
| 126 | NULL, /* no quoting function */ |
| 127 | NULL /* no version reporting (redundant) */ |
| 128 | }; |
| 129 | |
| 130 | #ifdef DYNLOOKUP |
| 131 | #define nis_lookup_module_info _lookup_module_info |
| 132 | #endif |
| 133 | |
| 134 | static lookup_info *_lookup_list[] = { &nis_lookup_info, &nis0_lookup_info }; |
| 135 | lookup_module_info nis_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 2 }; |
| 136 | |
| 137 | /* End of lookups/nis.c */ |