Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 1 | /*********************************************************** |
| 2 | Written by: |
| 3 | Fred Gansevles <Fred.Gansevles@cs.utwente.nl> |
| 4 | Vakgroep Spa, |
| 5 | Faculteit der Informatica, |
| 6 | Universiteit Twente, |
| 7 | Enschede, |
| 8 | the Netherlands. |
| 9 | ******************************************************************/ |
| 10 | |
| 11 | /* NIS module implementation */ |
| 12 | |
| 13 | #include "allobjects.h" |
| 14 | #include "modsupport.h" |
| 15 | #include "ceval.h" |
| 16 | |
| 17 | #include <rpcsvc/ypclnt.h> |
| 18 | #include <sys/time.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <rpc/rpc.h> |
| 21 | #include <rpcsvc/yp_prot.h> |
| 22 | |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 23 | static object *NisError; |
| 24 | |
| 25 | static object * |
| 26 | nis_error (err) |
| 27 | int err; |
| 28 | { |
| 29 | err_setstr(NisError, yperr_string(err)); |
| 30 | return NULL; |
| 31 | } |
| 32 | |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 33 | static struct nis_map { |
| 34 | char *alias; |
| 35 | char *map; |
| 36 | } aliases [] = { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 37 | {"passwd", "passwd.byname"}, |
| 38 | {"group", "group.byname"}, |
| 39 | {"networks", "networks.byaddr"}, |
| 40 | {"hosts", "hosts.byname"}, |
| 41 | {"protocols", "protocols.bynumber"}, |
| 42 | {"services", "services.byname"}, |
| 43 | {"aliases", "mail.aliases"}, |
| 44 | {"ethers", "ethers.byname"}, |
| 45 | {0L, 0L} |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 46 | }; |
| 47 | |
| 48 | static char * |
| 49 | nis_mapname (map) |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 50 | char *map; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 51 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 52 | int i; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 53 | |
| 54 | for (i=0; aliases[i].alias != 0L; i++) |
| 55 | if (!strcmp (aliases[i].alias, map)) |
| 56 | map = aliases[i].map; |
| 57 | return map; |
| 58 | } |
| 59 | |
| 60 | static int |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 61 | nis_foreach (instatus, inkey, inkeylen, inval, invallen, indata) |
| 62 | int instatus; |
| 63 | char *inkey; |
| 64 | int inkeylen; |
| 65 | char *inval; |
| 66 | int invallen; |
| 67 | object *indata; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 68 | { |
| 69 | if (instatus == YP_TRUE) { |
| 70 | inkey[inkeylen]=0; |
| 71 | inval[invallen]=0; |
| 72 | dictinsert (indata, inkey, newstringobject (inval)); |
| 73 | return 0; |
| 74 | } |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | static object * |
| 79 | nis_match (self, args) |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 80 | object *self; |
| 81 | object *args; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 82 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 83 | char *match; |
| 84 | char *domain; |
| 85 | int len; |
| 86 | char *key, *map; |
| 87 | int err; |
| 88 | object *res; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 89 | |
| 90 | if (!getstrstrarg(args, &key, &map)) |
| 91 | return NULL; |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 92 | if ((err = yp_get_default_domain(&domain)) != 0) |
| 93 | return nis_error(err); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 94 | BGN_SAVE |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 95 | map = nis_mapname (map); |
| 96 | err = yp_match (domain, map, key, strlen (key), &match, &len); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 97 | END_SAVE |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 98 | if (err != 0) |
| 99 | return nis_error(err); |
| 100 | res = newsizedstringobject (match, len); |
| 101 | free (match); |
| 102 | return res; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | static object * |
| 106 | nis_cat (self, args) |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 107 | object *self; |
| 108 | object *args; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 109 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 110 | char *domain; |
| 111 | char *map; |
| 112 | struct ypall_callback cb; |
| 113 | object *cat; |
| 114 | int err; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 115 | |
| 116 | if (!getstrarg(args, &map)) |
| 117 | return NULL; |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 118 | if ((err = yp_get_default_domain(&domain)) != 0) |
| 119 | return nis_error(err); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 120 | cat = newdictobject (); |
| 121 | if (cat == NULL) |
| 122 | return NULL; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 123 | cb.foreach = nis_foreach; |
| 124 | cb.data = (char *)cat; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 125 | BGN_SAVE |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 126 | map = nis_mapname (map); |
| 127 | err = yp_all (domain, map, &cb); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 128 | END_SAVE |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 129 | if (err != 0) { |
| 130 | DECREF(cat); |
| 131 | return nis_error(err); |
| 132 | } |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 133 | return cat; |
| 134 | } |
| 135 | |
| 136 | #define YPPROC_MAPLIST ((u_long)11) |
| 137 | #define YPPROG ((u_long)100004) |
| 138 | #define YPVERS ((u_long)2) |
| 139 | |
| 140 | typedef char *domainname; |
| 141 | typedef char *mapname; |
| 142 | |
| 143 | enum nisstat { |
| 144 | NIS_TRUE = 1, |
| 145 | NIS_NOMORE = 2, |
| 146 | NIS_FALSE = 0, |
| 147 | NIS_NOMAP = -1, |
| 148 | NIS_NODOM = -2, |
| 149 | NIS_NOKEY = -3, |
| 150 | NIS_BADOP = -4, |
| 151 | NIS_BADDB = -5, |
| 152 | NIS_YPERR = -6, |
| 153 | NIS_BADARGS = -7, |
| 154 | NIS_VERS = -8 |
| 155 | }; |
| 156 | typedef enum nisstat nisstat; |
| 157 | |
| 158 | struct nismaplist { |
| 159 | mapname map; |
| 160 | struct nismaplist *next; |
| 161 | }; |
| 162 | typedef struct nismaplist nismaplist; |
| 163 | |
| 164 | struct nisresp_maplist { |
| 165 | nisstat stat; |
| 166 | nismaplist *maps; |
| 167 | }; |
| 168 | typedef struct nisresp_maplist nisresp_maplist; |
| 169 | |
| 170 | static struct timeval TIMEOUT = { 25, 0 }; |
| 171 | |
| 172 | static |
| 173 | bool_t |
| 174 | nis_xdr_domainname(xdrs, objp) |
| 175 | XDR *xdrs; |
| 176 | domainname *objp; |
| 177 | { |
| 178 | if (!xdr_string(xdrs, objp, YPMAXDOMAIN)) { |
| 179 | return (FALSE); |
| 180 | } |
| 181 | return (TRUE); |
| 182 | } |
| 183 | |
| 184 | static |
| 185 | bool_t |
| 186 | nis_xdr_mapname(xdrs, objp) |
| 187 | XDR *xdrs; |
| 188 | mapname *objp; |
| 189 | { |
| 190 | if (!xdr_string(xdrs, objp, YPMAXMAP)) { |
| 191 | return (FALSE); |
| 192 | } |
| 193 | return (TRUE); |
| 194 | } |
| 195 | |
| 196 | static |
| 197 | bool_t |
| 198 | nis_xdr_ypmaplist(xdrs, objp) |
| 199 | XDR *xdrs; |
| 200 | nismaplist *objp; |
| 201 | { |
| 202 | if (!nis_xdr_mapname(xdrs, &objp->map)) { |
| 203 | return (FALSE); |
| 204 | } |
| 205 | if (!xdr_pointer(xdrs, (char **)&objp->next, sizeof(nismaplist), nis_xdr_ypmaplist)) { |
| 206 | return (FALSE); |
| 207 | } |
| 208 | return (TRUE); |
| 209 | } |
| 210 | |
| 211 | static |
| 212 | bool_t |
| 213 | nis_xdr_ypstat(xdrs, objp) |
| 214 | XDR *xdrs; |
| 215 | nisstat *objp; |
| 216 | { |
| 217 | if (!xdr_enum(xdrs, (enum_t *)objp)) { |
| 218 | return (FALSE); |
| 219 | } |
| 220 | return (TRUE); |
| 221 | } |
| 222 | |
| 223 | |
| 224 | static |
| 225 | bool_t |
| 226 | nis_xdr_ypresp_maplist(xdrs, objp) |
| 227 | XDR *xdrs; |
| 228 | nisresp_maplist *objp; |
| 229 | { |
| 230 | if (!nis_xdr_ypstat(xdrs, &objp->stat)) { |
| 231 | return (FALSE); |
| 232 | } |
| 233 | if (!xdr_pointer(xdrs, (char **)&objp->maps, sizeof(nismaplist), nis_xdr_ypmaplist)) { |
| 234 | return (FALSE); |
| 235 | } |
| 236 | return (TRUE); |
| 237 | } |
| 238 | |
| 239 | |
| 240 | static |
| 241 | nisresp_maplist * |
| 242 | nisproc_maplist_2(argp, clnt) |
| 243 | domainname *argp; |
| 244 | CLIENT *clnt; |
| 245 | { |
| 246 | static nisresp_maplist res; |
| 247 | |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 248 | memset(&res, 0, sizeof(res)); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 249 | if (clnt_call(clnt, YPPROC_MAPLIST, nis_xdr_domainname, argp, nis_xdr_ypresp_maplist |
| 250 | , &res, TIMEOUT) != RPC_SUCCESS) { |
| 251 | return (NULL); |
| 252 | } |
| 253 | return (&res); |
| 254 | } |
| 255 | |
| 256 | static |
| 257 | nismaplist * |
| 258 | nis_maplist () |
| 259 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 260 | nisresp_maplist *list; |
| 261 | char *dom; |
| 262 | CLIENT *cl, *clnt_create(); |
| 263 | char *server; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 264 | |
| 265 | yp_get_default_domain (&dom); |
| 266 | yp_master (dom, aliases[0].map, &server); |
| 267 | cl = clnt_create(server, YPPROG, YPVERS, "tcp"); |
| 268 | if (cl == NULL) { |
| 269 | clnt_pcreateerror(server); |
| 270 | return NULL; |
| 271 | } |
| 272 | list = nisproc_maplist_2 (&dom, cl); |
| 273 | if (list == NULL) |
| 274 | return NULL; |
| 275 | if (list->stat != NIS_TRUE) |
| 276 | return NULL; |
| 277 | return list->maps; |
| 278 | } |
| 279 | |
| 280 | static object * |
| 281 | nis_maps (self, args) |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 282 | object *self; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 283 | object *args; |
| 284 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 285 | nismaplist *maps; |
| 286 | object *list; |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 287 | |
| 288 | if ((maps = nis_maplist ()) == NULL) |
| 289 | return NULL; |
| 290 | if ((list = newlistobject(0)) == NULL) |
| 291 | return NULL; |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 292 | for (maps = maps->next; maps; maps = maps->next) { |
| 293 | if (addlistitem (list, newstringobject (maps->map)) < 0) { |
| 294 | DECREF(list); |
| 295 | list = NULL; |
| 296 | break; |
| 297 | } |
| 298 | } |
| 299 | /* XXX Shouldn't we free the list of maps now? */ |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 300 | return list; |
| 301 | } |
| 302 | |
| 303 | static struct methodlist nis_methods[] = { |
| 304 | {"match", nis_match}, |
| 305 | {"cat", nis_cat}, |
| 306 | {"maps", nis_maps}, |
| 307 | {NULL, NULL} /* Sentinel */ |
| 308 | }; |
| 309 | |
| 310 | void |
| 311 | initnis () |
| 312 | { |
Guido van Rossum | 3562d52 | 1992-08-12 15:26:16 +0000 | [diff] [blame] | 313 | object *m, *d; |
| 314 | m = initmodule("nis", nis_methods); |
| 315 | d = getmoduledict(m); |
| 316 | NisError = newstringobject("nis.error"); |
| 317 | if (NisError == NULL || dictinsert(d, "error", NisError) != 0) |
| 318 | fatal("Cannot define nis.error"); |
Guido van Rossum | 9de7a01 | 1992-08-12 14:57:12 +0000 | [diff] [blame] | 319 | } |