ncpl_conn.c revision 52153
1/* 2 * Copyright (c) 1999, Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: head/lib/libncp/ncpl_conn.c 52153 1999-10-12 11:56:41Z bp $ 33 */ 34 35/* 36 * 37 * Current scheme to create/open connection: 38 * 1. ncp_li_init() - lookup -S [-U] options in command line 39 * 2. ncp_li_init() - try to find existing connection 40 * 3. ncp_li_init() - if no server name and no accessible connections - bail out 41 * 4. This is connection candidate, read .rc file, override with command line 42 * and go ahead 43 * Note: connection referenced only via ncp_login() call. Although it is 44 * possible to get connection handle in other way, it will be unwise to use 45 * it, since conn can be destroyed at any time. 46 * 47 */ 48#include <sys/param.h> 49#include <sys/sysctl.h> 50#include <sys/ioctl.h> 51#include <sys/time.h> 52#include <sys/mount.h> 53#include <fcntl.h> 54#include <ctype.h> 55#include <errno.h> 56#include <stdio.h> 57#include <string.h> 58#include <stdlib.h> 59#include <pwd.h> 60#include <grp.h> 61#include <unistd.h> 62 63#include <netncp/ncp_lib.h> 64#include <netncp/ncp_rcfile.h> 65#include <nwfs/nwfs.h> 66 67static char *server_name; /* need a better way ! */ 68 69 70 71int 72ncp_li_setserver(struct ncp_conn_loginfo *li, const char *arg) { 73 if (strlen(arg) >= NCP_BINDERY_NAME_LEN) { 74 fprintf(stderr, "Server name too long:%s\n", arg); 75 return ENAMETOOLONG; 76 } 77 ncp_str_upper(strcpy(li->server, arg)); 78 return 0; 79} 80 81int 82ncp_li_setuser(struct ncp_conn_loginfo *li, char *arg) { 83 if (arg && strlen(arg) >= NCP_BINDERY_NAME_LEN) { 84 fprintf(stderr, "User name too long:%s\n", arg); 85 return ENAMETOOLONG; 86 } 87 if (li->user) 88 free(li->user); 89 if (arg) { 90 li->user = strdup(arg); 91 if (li->user == NULL) 92 return ENOMEM; 93 ncp_str_upper(li->user); 94 } else 95 li->user = NULL; 96 return 0; 97} 98 99int 100ncp_li_setpassword(struct ncp_conn_loginfo *li, const char *passwd) { 101 if (passwd && strlen(passwd) >= 127) { 102 fprintf(stderr, "Password too long:%s\n", passwd); 103 return ENAMETOOLONG; 104 } 105 if (li->password) { 106 bzero(li->password, strlen(li->password)); 107 free(li->password); 108 } 109 if (passwd) { 110 li->password = strdup(passwd); 111 if (li->password == NULL) 112 return ENOMEM; 113 } else 114 li->password = NULL; 115 return 0; 116} 117/* 118 * Prescan command line for [-S server] [-U user] arguments 119 * and fill li structure with defaults 120 */ 121int 122ncp_li_init(struct ncp_conn_loginfo *li, int argc, char *argv[]) { 123 int opt, error = 0; 124 char *arg; 125 126 bzero(li,sizeof(*li)); 127 li->timeout = 15; /* these values should be large enough to handle */ 128 li->retry_count = 4; /* slow servers, even on ethernet */ 129 li->access_mode = 0; 130 li->password = NULL; 131 li->sig_level = 1; 132 li->objtype = NCP_BINDERY_USER; 133 li->owner = NCP_DEFAULT_OWNER; 134 li->group = NCP_DEFAULT_GROUP; 135 server_name = NULL; 136 if (argv == NULL) return 0; 137 while ((opt = ncp_getopt(argc, argv, ":S:U:")) != -1) { 138 arg = ncp_optarg; 139 switch (opt) { 140 case 'S': 141 error = ncp_li_setserver(li, arg); 142 break; 143 case 'U': 144 error = ncp_li_setuser(li, arg); 145 break; 146 } 147 } 148 ncp_optind = ncp_optreset = 1; 149 return error; 150} 151 152void 153ncp_li_done(struct ncp_conn_loginfo *li) { 154 if (li->user) 155 free(li->user); 156 if (li->password) 157 free(li->password); 158} 159 160/* 161 * Lookup existing connection based on li structure, if connection 162 * found, it will be referenced. Otherwise full login sequence performed. 163 */ 164int 165ncp_li_login(struct ncp_conn_loginfo *li, int *aconnid) { 166 int connHandle, error; 167 168 if ((error = ncp_conn_scan(li, &connHandle)) == 0) { 169 *aconnid = connHandle; 170 return 0; 171 } 172 error = ncp_connect(li, &connHandle); 173 if (error) return errno; 174 error = ncp_login(connHandle, li->user, li->objtype, li->password); 175 if (error) { 176 ncp_disconnect(connHandle); 177 } else 178 *aconnid = connHandle; 179 return error; 180} 181 182/* 183 * read rc file as follows: 184 * 1. read [server] section 185 * 2. override with [server:user] section 186 * Since abcence of rcfile is not a bug, silently ignore that fact. 187 * rcfile never closed to reduce number of open/close operations. 188 */ 189int 190ncp_li_readrc(struct ncp_conn_loginfo *li) { 191 int i, val, error; 192 char uname[NCP_BINDERY_NAME_LEN*2+1]; 193 char *sect = NULL, *p; 194 195 /* 196 * if info from cmd line incomplete, try to find existing 197 * connection and fill server/user from it. 198 */ 199 if (li->server[0] == 0 || li->user == NULL) { 200 int connHandle; 201 struct ncp_conn_stat cs; 202 203 if ((error = ncp_conn_scan(li, &connHandle)) != 0) { 204 fprintf(stderr, "no default connection found: %s\n",strerror(errno)); 205 return error; 206 } 207 ncp_conn_getinfo(connHandle, &cs); 208 ncp_li_setserver(li, cs.li.server); 209 ncp_li_setuser(li, cs.user); 210 ncp_li_setpassword(li, ""); 211 ncp_disconnect(connHandle); 212 } 213 if (ncp_open_rcfile()) return 0; 214 215 for (i = 0; i < 2; i++) { 216 switch (i) { 217 case 0: 218 sect = li->server; 219 break; 220 case 1: 221 strcat(strcat(strcpy(uname,li->server),":"),li->user ? li->user : "default"); 222 sect = uname; 223 break; 224 } 225 rc_getstringptr(ncp_rc, sect, "password", &p); 226 if (p) 227 ncp_li_setpassword(li, p); 228 rc_getint(ncp_rc,sect, "timeout", &li->timeout); 229 rc_getint(ncp_rc,sect, "retry_count", &li->retry_count); 230 rc_getint(ncp_rc,sect, "sig_level", &li->sig_level); 231 if (rc_getint(ncp_rc,sect,"access_mode",&val) == 0) 232 li->access_mode = val; 233 if(rc_getbool(ncp_rc,sect,"bindery",&val) == 0 && val) { 234 li->opt |= NCP_OPT_BIND; 235 } 236 } 237 return 0; 238} 239 240/* 241 * check for all uncompleted fields 242 */ 243int 244ncp_li_check(struct ncp_conn_loginfo *li) { 245 int error = 0; 246 char *p; 247 248 do { 249 if (li->server[0] == 0) { 250 fprintf(stderr, "no server name specified\n"); 251 error = 1; 252 break; 253 } 254 error = ncp_find_fileserver(li, 255 (server_name==NULL) ? AF_IPX : AF_INET, server_name); 256 if (error) { 257 fprintf(stderr,"Can't find server %s, error=%s\n",li->server,strerror(errno)); 258 break; 259 } 260 if (li->user == NULL || li->user[0] == 0) { 261 fprintf(stderr, "no user name specified for server %s\n",li->server); 262 error = 1; 263 break; 264 } 265 if (li->password == NULL) { 266 p = getpass("Netware password:"); 267 error = ncp_li_setpassword(li, p) ? 1 : 0; 268 } 269 } while (0); 270 return error; 271} 272 273int 274ncp_conn_cnt(void) { 275 int error, cnt = 0, len = sizeof(cnt); 276 277#if __FreeBSD_version < 400001 278 error = sysctlbyname("net.ipx.ncp.conn_cnt", &cnt, &len, NULL, 0); 279#else 280 error = sysctlbyname("net.ncp.conn_cnt", &cnt, &len, NULL, 0); 281#endif 282 if (error) cnt = 0; 283 return cnt; 284} 285 286/* 287 * Find an existing connection and reference it 288 */ 289int 290ncp_conn_find(char *server,char *user) { 291 struct ncp_conn_args ca; 292 int connid, error; 293 294 if (server == NULL && user == NULL) { 295 error = ncp_conn_scan(NULL,&connid); 296 if (error) return -2; 297 return connid; 298 } 299 if (server == NULL) 300 return -2; 301 ncp_str_upper(server); 302 if (user) ncp_str_upper(user); 303 bzero(&ca, sizeof(ca)); 304 ncp_li_setserver(&ca, server); 305 ncp_li_setuser(&ca, user); 306 error = ncp_conn_scan(&ca,&connid); 307 if (error) 308 connid = -1; 309 return connid; 310} 311 312int 313ncp_li_arg(struct ncp_conn_loginfo *li, int opt, char *arg) { 314 int error = 0, sig_level; 315 char *p, *cp; 316 struct group *gr; 317 struct passwd *pw; 318 319 switch(opt) { 320 case 'S': /* we already fill server/[user] pair */ 321 case 'U': 322 break; 323 case 'A': 324 server_name = arg; 325 break; 326 case 'B': 327 li->opt |= NCP_OPT_BIND; 328 break; 329 case 'C': 330 li->opt |= NCP_OPT_NOUPCASEPASS; 331 break; 332 case 'I': 333 sig_level = atoi(arg); 334 if (sig_level < 0 || sig_level > 3) { 335 fprintf(stderr, "Invalid NCP signature level option `%s' (must be number between 0 and 3)\n", arg); 336 error = 1; 337 } 338 li->sig_level = sig_level; 339 if (sig_level > 1) li->opt |= NCP_OPT_SIGN; 340 break; 341 case 'M': 342 li->access_mode = strtol(arg, NULL, 8); 343 break; 344 case 'N': 345 ncp_li_setpassword(li, ""); 346 break; 347 case 'O': 348 p = strdup(arg); 349 cp = strchr(p, ':'); 350 if (cp) { 351 *cp++ = '\0'; 352 if (*cp) { 353 gr = getgrnam(cp); 354 if (gr) { 355 li->group = gr->gr_gid; 356 } else 357 ncp_error("Invalid group name %s, ignored", 358 0, cp); 359 } 360 } 361 if (*p) { 362 pw = getpwnam(p); 363 if (pw) { 364 li->owner = pw->pw_uid; 365 } else 366 ncp_error("Invalid user name %s, ignored", 0, p); 367 } 368 endpwent(); 369 free(p); 370 break; 371 case 'P': 372 li->opt |= NCP_OPT_PERMANENT; 373 break; 374 case 'R': 375 li->retry_count = atoi(arg); 376 break; 377 case 'W': 378 li->timeout = atoi(arg); 379 break; 380 } 381 return error; 382} 383 384void * 385ncp_conn_list(void) { 386 int error, cnt = 0, len; 387 void *p; 388 389 cnt = ncp_conn_cnt(); 390 if (cnt == 0) return NULL; 391 len = cnt*(sizeof(struct ncp_conn_stat))+sizeof(int); 392 p = malloc(len); 393 if (p == NULL) return NULL; 394#if __FreeBSD_version < 400001 395 error = sysctlbyname("net.ipx.ncp.conn_stat", p, &len, NULL, 0); 396#else 397 error = sysctlbyname("net.ncp.conn_stat", p, &len, NULL, 0); 398#endif 399 if (error) { 400 free(p); 401 p = NULL; 402 } 403 return p; 404} 405 406 407int 408ncp_conn_setflags(int connid, u_int16_t mask, u_int16_t flags) { 409 int error; 410 DECLARE_RQ; 411 412 ncp_init_request(conn); 413 ncp_add_byte(conn, NCP_CONN_SETFLAGS); 414 ncp_add_word_lh(conn, mask); 415 ncp_add_word_lh(conn, flags); 416 if ((error = ncp_conn_request(connid, conn)) < 0) 417 return -1; 418 return error; 419} 420 421int 422ncp_login(int connHandle, const char *user, int objtype, const char *password) { 423 int error; 424 struct ncp_conn_login *p; 425 DECLARE_RQ; 426 427 ncp_init_request(conn); 428 ncp_add_byte(conn, NCP_CONN_LOGIN); 429 p = (struct ncp_conn_login *)&conn->packet[conn->rqsize]; 430 (const char*)p->username = user; 431 p->objtype = objtype; 432 (const char*)p->password = password; 433 conn->rqsize += sizeof(*p); 434 if ((error = ncp_conn_request(connHandle, conn)) < 0) 435 return -1; 436 return error; 437} 438 439int 440ncp_connect_addr(struct sockaddr *sa, NWCONN_HANDLE *chp) { 441 int error; 442 struct ncp_conn_args li; 443 444 bzero(&li, sizeof(li)); 445 bcopy(sa, &li.addr, sa->sa_len); 446 /* 447 * XXX Temporary !!!. server will be filled in kernel !!! 448 */ 449 strcpy(li.server,ipx_ntoa(li.ipxaddr.sipx_addr)); 450 error = ncp_connect(&li, chp); 451 return error; 452} 453 454int 455ncp_conn_getinfo(int connHandle, struct ncp_conn_stat *ps) { 456 int error; 457 DECLARE_RQ; 458 459 ncp_init_request(conn); 460 ncp_add_byte(conn, NCP_CONN_GETINFO); 461 if ((error = ncp_conn_request(connHandle, conn)) < 0) 462 return -1; 463 memcpy(ps, ncp_reply_data(conn,0), sizeof(*ps)); 464 return error; 465} 466 467int 468ncp_conn_getuser(int connHandle, char **user) { 469 int error; 470 DECLARE_RQ; 471 472 ncp_init_request(conn); 473 ncp_add_byte(conn, NCP_CONN_GETUSER); 474 if ((error = ncp_conn_request(connHandle, conn)) < 0) 475 return -1; 476 *user = strdup(ncp_reply_data(conn,0)); 477 return error; 478} 479 480int 481ncp_conn2ref(int connHandle, int *connRef) { 482 int error; 483 DECLARE_RQ; 484 485 ncp_init_request(conn); 486 ncp_add_byte(conn, NCP_CONN_CONN2REF); 487 if ((error = ncp_conn_request(connHandle, conn)) < 0) 488 return -1; 489 *connRef = *((int*)ncp_reply_data(conn,0)); 490 return error; 491} 492 493int 494ncp_path2conn(char *path, int *connHandle) { 495 struct statfs st; 496 int d, error; 497 498 if ((error = statfs(path, &st)) != 0) return errno; 499 if (strcmp(st.f_fstypename,"nwfs") != 0) return EINVAL; 500 if ((d = open(path, O_RDONLY)) < 0) return errno; 501 if ((error = ioctl(d,NWFSIOC_GETCONN, connHandle)) != 0) return errno; 502 close(d); 503 return 0; 504} 505 506int 507ncp_conn_dup(NWCONN_HANDLE org, NWCONN_HANDLE *res) { 508 int error; 509 DECLARE_RQ; 510 511 ncp_init_request(conn); 512 ncp_add_byte(conn, NCP_CONN_DUP); 513 if ((error = ncp_conn_request(org, conn)) < 0) 514 return errno; 515 *res = *((int*)ncp_reply_data(conn, 0)); 516 return 0; 517} 518