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1 | /* | |
2 | * $Id$ | |
3 | * | |
4 | * bsd-cray.c | |
5 | * | |
6 | * Copyright (c) 2002, Cray Inc. (Wendy Palm <wendyp@cray.com>) | |
7 | * Significant portions provided by | |
8 | * Wayne Schroeder, SDSC <schroeder@sdsc.edu> | |
9 | * William Jones, UTexas <jones@tacc.utexas.edu> | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
21 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
22 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
23 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
25 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
29 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
30 | * | |
31 | * Created: Apr 22 16.34:00 2002 wp | |
32 | * | |
33 | * This file contains functions required for proper execution | |
34 | * on UNICOS systems. | |
35 | * | |
36 | */ | |
37 | #ifdef _UNICOS | |
38 | ||
39 | #include <udb.h> | |
40 | #include <tmpdir.h> | |
41 | #include <unistd.h> | |
42 | #include <sys/category.h> | |
43 | #include <utmp.h> | |
44 | #include <sys/jtab.h> | |
45 | #include <signal.h> | |
46 | #include <sys/priv.h> | |
47 | #include <sys/secparm.h> | |
48 | #include <sys/tfm.h> | |
49 | #include <sys/usrv.h> | |
50 | #include <sys/sysv.h> | |
51 | #include <sys/sectab.h> | |
52 | #include <sys/secstat.h> | |
53 | #include <sys/stat.h> | |
54 | #include <sys/session.h> | |
55 | #include <stdarg.h> | |
56 | #include <stdlib.h> | |
57 | #include <string.h> | |
58 | #include <unistd.h> | |
59 | #include <pwd.h> | |
60 | #include <fcntl.h> | |
61 | #include <errno.h> | |
62 | #include <ia.h> | |
63 | #include <urm.h> | |
64 | #include "ssh.h" | |
65 | ||
66 | #include "includes.h" | |
67 | #include "sys/types.h" | |
68 | ||
69 | #ifndef HAVE_STRUCT_SOCKADDR_STORAGE | |
70 | # define _SS_MAXSIZE 128 /* Implementation specific max size */ | |
71 | # define _SS_PADSIZE (_SS_MAXSIZE - sizeof (struct sockaddr)) | |
72 | ||
73 | # define ss_family ss_sa.sa_family | |
74 | #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */ | |
75 | ||
76 | #ifndef IN6_IS_ADDR_LOOPBACK | |
77 | # define IN6_IS_ADDR_LOOPBACK(a) \ | |
78 | (((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \ | |
79 | ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1)) | |
80 | #endif /* !IN6_IS_ADDR_LOOPBACK */ | |
81 | ||
82 | #ifndef AF_INET6 | |
83 | /* Define it to something that should never appear */ | |
84 | #define AF_INET6 AF_MAX | |
85 | #endif | |
86 | ||
87 | #include "log.h" | |
88 | #include "servconf.h" | |
89 | #include "bsd-cray.h" | |
90 | ||
91 | #define MAXACID 80 | |
92 | ||
93 | extern ServerOptions options; | |
94 | ||
95 | char cray_tmpdir[TPATHSIZ + 1]; /* job TMPDIR path */ | |
96 | ||
97 | struct sysv sysv; /* system security structure */ | |
98 | struct usrv usrv; /* user security structure */ | |
99 | ||
100 | /* | |
101 | * Functions. | |
102 | */ | |
103 | void cray_retain_utmp(struct utmp *, int); | |
104 | void cray_delete_tmpdir(char *, int, uid_t); | |
105 | void cray_init_job(struct passwd *); | |
106 | void cray_set_tmpdir(struct utmp *); | |
107 | void cray_login_failure(char *, int); | |
108 | int cray_setup(uid_t, char *, const char *); | |
109 | int cray_access_denied(char *); | |
110 | ||
111 | void | |
112 | cray_login_failure(char *username, int errcode) | |
113 | { | |
114 | struct udb *ueptr; /* UDB pointer for username */ | |
115 | ia_failure_t fsent; /* ia_failure structure */ | |
116 | ia_failure_ret_t fret; /* ia_failure return stuff */ | |
117 | struct jtab jtab; /* job table structure */ | |
118 | int jid = 0; /* job id */ | |
119 | ||
120 | if ((jid = getjtab(&jtab)) < 0) | |
121 | debug("cray_login_failure(): getjtab error"); | |
122 | ||
123 | getsysudb(); | |
124 | if ((ueptr = getudbnam(username)) == UDB_NULL) | |
125 | debug("cray_login_failure(): getudbname() returned NULL"); | |
126 | endudb(); | |
127 | ||
128 | memset(&fsent, '\0', sizeof(fsent)); | |
129 | fsent.revision = 0; | |
130 | fsent.uname = username; | |
131 | fsent.host = (char *)get_canonical_hostname(options.use_dns); | |
132 | fsent.ttyn = "sshd"; | |
133 | fsent.caller = IA_SSHD; | |
134 | fsent.flags = IA_INTERACTIVE; | |
135 | fsent.ueptr = ueptr; | |
136 | fsent.jid = jid; | |
137 | fsent.errcode = errcode; | |
138 | fsent.pwdp = NULL; | |
139 | fsent.exitcode = 0; /* dont exit in ia_failure() */ | |
140 | ||
141 | fret.revision = 0; | |
142 | fret.normal = 0; | |
143 | ||
144 | /* | |
145 | * Call ia_failure because of an login failure. | |
146 | */ | |
147 | ia_failure(&fsent, &fret); | |
148 | } | |
149 | ||
150 | /* | |
151 | * Cray access denied | |
152 | */ | |
153 | int | |
154 | cray_access_denied(char *username) | |
155 | { | |
156 | struct udb *ueptr; /* UDB pointer for username */ | |
157 | int errcode; /* IA errorcode */ | |
158 | ||
159 | errcode = 0; | |
160 | getsysudb(); | |
161 | if ((ueptr = getudbnam(username)) == UDB_NULL) | |
162 | debug("cray_login_failure(): getudbname() returned NULL"); | |
163 | endudb(); | |
164 | ||
165 | if (ueptr != NULL && ueptr->ue_disabled) | |
166 | errcode = IA_DISABLED; | |
167 | if (errcode) | |
168 | cray_login_failure(username, errcode); | |
169 | ||
170 | return (errcode); | |
171 | } | |
172 | ||
173 | /* | |
174 | * record_failed_login: generic "login failed" interface function | |
175 | */ | |
176 | void | |
177 | record_failed_login(const char *user, const char *hostname, const char *ttyname) | |
178 | { | |
179 | cray_login_failure((char *)user, IA_UDBERR); | |
180 | } | |
181 | ||
182 | int | |
183 | cray_setup (uid_t uid, char *username, const char *command) | |
184 | { | |
185 | extern struct udb *getudb(); | |
186 | extern char *setlimits(); | |
187 | ||
188 | int err; /* error return */ | |
189 | time_t system_time; /* current system clock */ | |
190 | time_t expiration_time; /* password expiration time */ | |
191 | int maxattempts; /* maximum no. of failed login attempts */ | |
192 | int SecureSys; /* unicos security flag */ | |
193 | int minslevel = 0; /* system minimum security level */ | |
194 | int i, j; | |
195 | int valid_acct = -1; /* flag for reading valid acct */ | |
196 | char acct_name[MAXACID] = { "" }; /* used to read acct name */ | |
197 | struct jtab jtab; /* Job table struct */ | |
198 | struct udb ue; /* udb entry for logging-in user */ | |
199 | struct udb *up; /* pointer to UDB entry */ | |
200 | struct secstat secinfo; /* file security attributes */ | |
201 | struct servprov init_info; /* used for sesscntl() call */ | |
202 | int jid; /* job ID */ | |
203 | int pid; /* process ID */ | |
204 | char *sr; /* status return from setlimits() */ | |
205 | char *ttyn = NULL; /* ttyname or command name*/ | |
206 | char hostname[MAXHOSTNAMELEN]; | |
207 | /* passwd stuff for ia_user */ | |
208 | passwd_t pwdacm, pwddialup, pwdudb, pwdwal, pwddce; | |
209 | ia_user_ret_t uret; /* stuff returned from ia_user */ | |
210 | ia_user_t usent; /* ia_user main structure */ | |
211 | int ia_rcode; /* ia_user return code */ | |
212 | ia_failure_t fsent; /* ia_failure structure */ | |
213 | ia_failure_ret_t fret; /* ia_failure return stuff */ | |
214 | ia_success_t ssent; /* ia_success structure */ | |
215 | ia_success_ret_t sret; /* ia_success return stuff */ | |
216 | int ia_mlsrcode; /* ia_mlsuser return code */ | |
217 | int secstatrc; /* [f]secstat return code */ | |
218 | ||
219 | if (SecureSys = (int)sysconf(_SC_CRAY_SECURE_SYS)) { | |
220 | getsysv(&sysv, sizeof(struct sysv)); | |
221 | minslevel = sysv.sy_minlvl; | |
222 | if (getusrv(&usrv) < 0) | |
223 | fatal("getusrv() failed, errno = %d", errno); | |
224 | } | |
225 | hostname[0] = '\0'; | |
226 | strlcpy(hostname, | |
227 | (char *)get_canonical_hostname(options.use_dns), | |
228 | MAXHOSTNAMELEN); | |
229 | /* | |
230 | * Fetch user's UDB entry. | |
231 | */ | |
232 | getsysudb(); | |
233 | if ((up = getudbnam(username)) == UDB_NULL) | |
234 | fatal("cannot fetch user's UDB entry"); | |
235 | ||
236 | /* | |
237 | * Prevent any possible fudging so perform a data | |
238 | * safety check and compare the supplied uid against | |
239 | * the udb's uid. | |
240 | */ | |
241 | if (up->ue_uid != uid) | |
242 | fatal("IA uid missmatch"); | |
243 | endudb(); | |
244 | ||
245 | if ((jid = getjtab(&jtab)) < 0) { | |
246 | debug("getjtab"); | |
247 | return(-1); | |
248 | } | |
249 | pid = getpid(); | |
250 | ttyn = ttyname(0); | |
251 | if (SecureSys) { | |
252 | if (ttyn != NULL) | |
253 | secstatrc = secstat(ttyn, &secinfo); | |
254 | else | |
255 | secstatrc = fsecstat(1, &secinfo); | |
256 | ||
257 | if (secstatrc == 0) | |
258 | debug("[f]secstat() successful"); | |
259 | else | |
260 | fatal("[f]secstat() error, rc = %d", secstatrc); | |
261 | } | |
262 | if ((ttyn == NULL) && ((char *)command != NULL)) | |
263 | ttyn = (char *)command; | |
264 | /* | |
265 | * Initialize all structures to call ia_user | |
266 | */ | |
267 | usent.revision = 0; | |
268 | usent.uname = username; | |
269 | usent.host = hostname; | |
270 | usent.ttyn = ttyn; | |
271 | usent.caller = IA_SSHD; | |
272 | usent.pswdlist = &pwdacm; | |
273 | usent.ueptr = &ue; | |
274 | usent.flags = IA_INTERACTIVE | IA_FFLAG; | |
275 | pwdacm.atype = IA_SECURID; | |
276 | pwdacm.pwdp = NULL; | |
277 | pwdacm.next = &pwdudb; | |
278 | ||
279 | pwdudb.atype = IA_UDB; | |
280 | pwdudb.pwdp = NULL; | |
281 | pwdudb.next = &pwddce; | |
282 | ||
283 | pwddce.atype = IA_DCE; | |
284 | pwddce.pwdp = NULL; | |
285 | pwddce.next = &pwddialup; | |
286 | ||
287 | pwddialup.atype = IA_DIALUP; | |
288 | pwddialup.pwdp = NULL; | |
289 | /* pwddialup.next = &pwdwal; */ | |
290 | pwddialup.next = NULL; | |
291 | ||
292 | pwdwal.atype = IA_WAL; | |
293 | pwdwal.pwdp = NULL; | |
294 | pwdwal.next = NULL; | |
295 | ||
296 | uret.revision = 0; | |
297 | uret.pswd = NULL; | |
298 | uret.normal = 0; | |
299 | ||
300 | ia_rcode = ia_user(&usent, &uret); | |
301 | switch (ia_rcode) { | |
302 | /* | |
303 | * These are acceptable return codes from ia_user() | |
304 | */ | |
305 | case IA_UDBWEEK: /* Password Expires in 1 week */ | |
306 | expiration_time = ue.ue_pwage.time + ue.ue_pwage.maxage; | |
307 | printf ("WARNING - your current password will expire %s\n", | |
308 | ctime((const time_t *)&expiration_time)); | |
309 | break; | |
310 | case IA_UDBEXPIRED: | |
311 | if (ttyname(0) != NULL) { | |
312 | /* Force a password change */ | |
313 | printf("Your password has expired; Choose a new one.\n"); | |
314 | execl("/bin/passwd", "passwd", username, 0); | |
315 | exit(9); | |
316 | } | |
317 | break; | |
318 | case IA_NORMAL: /* Normal Return Code */ | |
319 | break; | |
320 | case IA_BACKDOOR: | |
321 | /* XXX: can we memset it to zero here so save some of this */ | |
322 | strlcpy(ue.ue_name, "root", sizeof(ue.ue_name)); | |
323 | strlcpy(ue.ue_dir, "/", sizeof(ue.ue_dir)); | |
324 | strlcpy(ue.ue_shell, "/bin/sh", sizeof(ue.ue_shell)); | |
325 | ||
326 | ue.ue_passwd[0] = '\0'; | |
327 | ue.ue_age[0] = '\0'; | |
328 | ue.ue_comment[0] = '\0'; | |
329 | ue.ue_loghost[0] = '\0'; | |
330 | ue.ue_logline[0] = '\0'; | |
331 | ||
332 | ue.ue_uid = -1; | |
333 | ue.ue_nice[UDBRC_INTER] = 0; | |
334 | ||
335 | for (i = 0; i < MAXVIDS; i++) | |
336 | ue.ue_gids[i] = 0; | |
337 | ||
338 | ue.ue_logfails = 0; | |
339 | ue.ue_minlvl = ue.ue_maxlvl = ue.ue_deflvl = minslevel; | |
340 | ue.ue_defcomps = 0; | |
341 | ue.ue_comparts = 0; | |
342 | ue.ue_permits = 0; | |
343 | ue.ue_trap = 0; | |
344 | ue.ue_disabled = 0; | |
345 | ue.ue_logtime = 0; | |
346 | break; | |
347 | case IA_CONSOLE: /* Superuser not from Console */ | |
348 | case IA_TRUSTED: /* Trusted user */ | |
349 | if (options.permit_root_login > PERMIT_NO) | |
350 | break; /* Accept root login */ | |
351 | default: | |
352 | /* | |
353 | * These are failed return codes from ia_user() | |
354 | */ | |
355 | switch (ia_rcode) | |
356 | { | |
357 | case IA_BADAUTH: | |
358 | printf("Bad authorization, access denied.\n"); | |
359 | break; | |
360 | case IA_DISABLED: | |
361 | printf("Your login has been disabled. Contact the system "); | |
362 | printf("administrator for assistance.\n"); | |
363 | break; | |
364 | case IA_GETSYSV: | |
365 | printf("getsysv() failed - errno = %d\n", errno); | |
366 | break; | |
367 | case IA_MAXLOGS: | |
368 | printf("Maximum number of failed login attempts exceeded.\n"); | |
369 | printf("Access denied.\n"); | |
370 | break; | |
371 | case IA_UDBPWDNULL: | |
372 | if (SecureSys) | |
373 | printf("NULL Password not allowed on MLS systems.\n"); | |
374 | break; | |
375 | default: | |
376 | break; | |
377 | } | |
378 | ||
379 | /* | |
380 | * Authentication failed. | |
381 | */ | |
382 | printf("sshd: Login incorrect, (0%o)\n", | |
383 | ia_rcode-IA_ERRORCODE); | |
384 | ||
385 | /* | |
386 | * Initialize structure for ia_failure | |
387 | * which will exit. | |
388 | */ | |
389 | fsent.revision = 0; | |
390 | fsent.uname = username; | |
391 | fsent.host = hostname; | |
392 | fsent.ttyn = ttyn; | |
393 | fsent.caller = IA_SSHD; | |
394 | fsent.flags = IA_INTERACTIVE; | |
395 | fsent.ueptr = &ue; | |
396 | fsent.jid = jid; | |
397 | fsent.errcode = ia_rcode; | |
398 | fsent.pwdp = uret.pswd; | |
399 | fsent.exitcode = 1; | |
400 | ||
401 | fret.revision = 0; | |
402 | fret.normal = 0; | |
403 | ||
404 | /* | |
405 | * Call ia_failure because of an IA failure. | |
406 | * There is no return because ia_failure exits. | |
407 | */ | |
408 | ia_failure(&fsent, &fret); | |
409 | ||
410 | exit(1); | |
411 | } | |
412 | ||
413 | ia_mlsrcode = IA_NORMAL; | |
414 | if (SecureSys) { | |
415 | debug("calling ia_mlsuser()"); | |
416 | ia_mlsrcode = ia_mlsuser(&ue, &secinfo, &usrv, NULL, 0); | |
417 | } | |
418 | if (ia_mlsrcode != IA_NORMAL) { | |
419 | printf("sshd: Login incorrect, (0%o)\n", | |
420 | ia_mlsrcode-IA_ERRORCODE); | |
421 | /* | |
422 | * Initialize structure for ia_failure | |
423 | * which will exit. | |
424 | */ | |
425 | fsent.revision = 0; | |
426 | fsent.uname = username; | |
427 | fsent.host = hostname; | |
428 | fsent.ttyn = ttyn; | |
429 | fsent.caller = IA_SSHD; | |
430 | fsent.flags = IA_INTERACTIVE; | |
431 | fsent.ueptr = &ue; | |
432 | fsent.jid = jid; | |
433 | fsent.errcode = ia_mlsrcode; | |
434 | fsent.pwdp = uret.pswd; | |
435 | fsent.exitcode = 1; | |
436 | fret.revision = 0; | |
437 | fret.normal = 0; | |
438 | ||
439 | /* | |
440 | * Call ia_failure because of an IA failure. | |
441 | * There is no return because ia_failure exits. | |
442 | */ | |
443 | ia_failure(&fsent,&fret); | |
444 | exit(1); | |
445 | } | |
446 | ||
447 | /* Provide login status information */ | |
448 | if (options.print_lastlog && ue.ue_logtime != 0) { | |
449 | printf("Last successful login was : %.*s ", 19, | |
450 | (char *)ctime(&ue.ue_logtime)); | |
451 | ||
452 | if (*ue.ue_loghost != '\0') { | |
453 | printf("from %.*s\n", sizeof(ue.ue_loghost), | |
454 | ue.ue_loghost); | |
455 | } else { | |
456 | printf("on %.*s\n", sizeof(ue.ue_logline), | |
457 | ue.ue_logline); | |
458 | } | |
459 | ||
460 | if (SecureSys && (ue.ue_logfails != 0)) { | |
461 | printf(" followed by %d failed attempts\n", | |
462 | ue.ue_logfails); | |
463 | } | |
464 | } | |
465 | ||
466 | /* | |
467 | * Call ia_success to process successful I/A. | |
468 | */ | |
469 | ssent.revision = 0; | |
470 | ssent.uname = username; | |
471 | ssent.host = hostname; | |
472 | ssent.ttyn = ttyn; | |
473 | ssent.caller = IA_SSHD; | |
474 | ssent.flags = IA_INTERACTIVE; | |
475 | ssent.ueptr = &ue; | |
476 | ssent.jid = jid; | |
477 | ssent.errcode = ia_rcode; | |
478 | ssent.us = NULL; | |
479 | ssent.time = 1; /* Set ue_logtime */ | |
480 | ||
481 | sret.revision = 0; | |
482 | sret.normal = 0; | |
483 | ||
484 | ia_success(&ssent, &sret); | |
485 | ||
486 | /* | |
487 | * Query for account, iff > 1 valid acid & askacid permbit | |
488 | */ | |
489 | if (((ue.ue_permbits & PERMBITS_ACCTID) || | |
490 | (ue.ue_acids[0] >= 0) && (ue.ue_acids[1] >= 0)) && | |
491 | ue.ue_permbits & PERMBITS_ASKACID) { | |
492 | if (ttyname(0) != NULL) { | |
493 | debug("cray_setup: ttyname true case, %.100s", ttyname); | |
494 | while (valid_acct == -1) { | |
495 | printf("Account (? for available accounts)" | |
496 | " [%s]: ", acid2nam(ue.ue_acids[0])); | |
497 | fgets(acct_name, MAXACID, stdin); | |
498 | switch (acct_name[0]) { | |
499 | case EOF: | |
500 | exit(0); | |
501 | break; | |
502 | case '\0': | |
503 | valid_acct = ue.ue_acids[0]; | |
504 | strlcpy(acct_name, acid2nam(valid_acct), MAXACID); | |
505 | break; | |
506 | case '?': | |
507 | /* Print the list 3 wide */ | |
508 | for (i = 0, j = 0; i < MAXVIDS; i++) { | |
509 | if (ue.ue_acids[i] == -1) { | |
510 | printf("\n"); | |
511 | break; | |
512 | } | |
513 | if (++j == 4) { | |
514 | j = 1; | |
515 | printf("\n"); | |
516 | } | |
517 | printf(" %s", | |
518 | acid2nam(ue.ue_acids[i])); | |
519 | } | |
520 | if (ue.ue_permbits & PERMBITS_ACCTID) { | |
521 | printf("\"acctid\" permbit also allows" | |
522 | " you to select any valid " | |
523 | "account name.\n"); | |
524 | } | |
525 | printf("\n"); | |
526 | break; | |
527 | default: | |
528 | valid_acct = nam2acid(acct_name); | |
529 | if (valid_acct == -1) | |
530 | printf( | |
531 | "Account id not found for" | |
532 | " account name \"%s\"\n\n", | |
533 | acct_name); | |
534 | break; | |
535 | } | |
536 | /* | |
537 | * If an account was given, search the user's | |
538 | * acids array to verify they can use this account. | |
539 | */ | |
540 | if ((valid_acct != -1) && | |
541 | !(ue.ue_permbits & PERMBITS_ACCTID)) { | |
542 | for (i = 0; i < MAXVIDS; i++) { | |
543 | if (ue.ue_acids[i] == -1) | |
544 | break; | |
545 | if (valid_acct == ue.ue_acids[i]) | |
546 | break; | |
547 | } | |
548 | if (i == MAXVIDS || | |
549 | ue.ue_acids[i] == -1) { | |
550 | fprintf(stderr, "Cannot set" | |
551 | " account name to " | |
552 | "\"%s\", permission " | |
553 | "denied\n\n", acct_name); | |
554 | valid_acct = -1; | |
555 | } | |
556 | } | |
557 | } | |
558 | } else { | |
559 | /* | |
560 | * The client isn't connected to a terminal and can't | |
561 | * respond to an acid prompt. Use default acid. | |
562 | */ | |
563 | debug("cray_setup: ttyname false case, %.100s", | |
564 | ttyname); | |
565 | valid_acct = ue.ue_acids[0]; | |
566 | } | |
567 | } else { | |
568 | /* | |
569 | * The user doesn't have the askacid permbit set or | |
570 | * only has one valid account to use. | |
571 | */ | |
572 | valid_acct = ue.ue_acids[0]; | |
573 | } | |
574 | if (acctid(0, valid_acct) < 0) { | |
575 | printf ("Bad account id: %d\n", valid_acct); | |
576 | exit(1); | |
577 | } | |
578 | ||
579 | /* | |
580 | * Now set shares, quotas, limits, including CPU time for the | |
581 | * (interactive) job and process, and set up permissions | |
582 | * (for chown etc), etc. | |
583 | */ | |
584 | if (setshares(ue.ue_uid, valid_acct, printf, 0, 0)) { | |
585 | printf("Unable to give %d shares to <%s>(%d/%d)\n", | |
586 | ue.ue_shares, ue.ue_name, ue.ue_uid, valid_acct); | |
587 | exit(1); | |
588 | } | |
589 | ||
590 | sr = setlimits(username, C_PROC, pid, UDBRC_INTER); | |
591 | if (sr != NULL) { | |
592 | debug("%.200s", sr); | |
593 | exit(1); | |
594 | } | |
595 | sr = setlimits(username, C_JOB, jid, UDBRC_INTER); | |
596 | if (sr != NULL) { | |
597 | debug("%.200s", sr); | |
598 | exit(1); | |
599 | } | |
600 | /* | |
601 | * Place the service provider information into | |
602 | * the session table (Unicos) or job table (Unicos/mk). | |
603 | * There exist double defines for the job/session table in | |
604 | * unicos/mk (jtab.h) so no need for a compile time switch. | |
605 | */ | |
606 | memset(&init_info, '\0', sizeof(init_info)); | |
607 | init_info.s_sessinit.si_id = URM_SPT_LOGIN; | |
608 | init_info.s_sessinit.si_pid = getpid(); | |
609 | init_info.s_sessinit.si_sid = jid; | |
610 | sesscntl(0, S_SETSERVPO, (int)&init_info); | |
611 | ||
612 | /* | |
613 | * Set user and controlling tty security attributes. | |
614 | */ | |
615 | if (SecureSys) { | |
616 | if (setusrv(&usrv) == -1) { | |
617 | debug("setusrv() failed, errno = %d",errno); | |
618 | exit(1); | |
619 | } | |
620 | } | |
621 | ||
622 | return (0); | |
623 | } | |
624 | ||
625 | /* | |
626 | * The rc.* and /etc/sdaemon methods of starting a program on unicos/unicosmk | |
627 | * can have pal privileges that sshd can inherit which | |
628 | * could allow a user to su to root with out a password. | |
629 | * This subroutine clears all privileges. | |
630 | */ | |
631 | void | |
632 | drop_cray_privs() | |
633 | { | |
634 | #if defined(_SC_CRAY_PRIV_SU) | |
635 | priv_proc_t *privstate; | |
636 | int result; | |
637 | extern int priv_set_proc(); | |
638 | extern priv_proc_t *priv_init_proc(); | |
639 | ||
640 | /* | |
641 | * If ether of theses two flags are not set | |
642 | * then don't allow this version of ssh to run. | |
643 | */ | |
644 | if (!sysconf(_SC_CRAY_PRIV_SU)) | |
645 | fatal("Not PRIV_SU system."); | |
646 | if (!sysconf(_SC_CRAY_POSIX_PRIV)) | |
647 | fatal("Not POSIX_PRIV."); | |
648 | ||
649 | debug("Setting MLS labels.");; | |
650 | ||
651 | if (sysconf(_SC_CRAY_SECURE_MAC)) { | |
652 | usrv.sv_minlvl = SYSLOW; | |
653 | usrv.sv_actlvl = SYSHIGH; | |
654 | usrv.sv_maxlvl = SYSHIGH; | |
655 | } else { | |
656 | usrv.sv_minlvl = sysv.sy_minlvl; | |
657 | usrv.sv_actlvl = sysv.sy_minlvl; | |
658 | usrv.sv_maxlvl = sysv.sy_maxlvl; | |
659 | } | |
660 | usrv.sv_actcmp = 0; | |
661 | usrv.sv_valcmp = sysv.sy_valcmp; | |
662 | ||
663 | usrv.sv_intcat = TFM_SYSTEM; | |
664 | usrv.sv_valcat |= (TFM_SYSTEM | TFM_SYSFILE); | |
665 | ||
666 | if (setusrv(&usrv) < 0) { | |
667 | fatal("%s(%d): setusrv(): %s", __FILE__, __LINE__, | |
668 | strerror(errno)); | |
669 | } | |
670 | ||
671 | if ((privstate = priv_init_proc()) != NULL) { | |
672 | result = priv_set_proc(privstate); | |
673 | if (result != 0 ) { | |
674 | fatal("%s(%d): priv_set_proc(): %s", | |
675 | __FILE__, __LINE__, strerror(errno)); | |
676 | } | |
677 | priv_free_proc(privstate); | |
678 | } | |
679 | debug ("Privileges should be cleared..."); | |
680 | #else | |
681 | /* XXX: do this differently */ | |
682 | # error Cray systems must be run with _SC_CRAY_PRIV_SU on! | |
683 | #endif | |
684 | } | |
685 | ||
686 | ||
687 | /* | |
688 | * Retain utmp/wtmp information - used by cray accounting. | |
689 | */ | |
690 | void | |
691 | cray_retain_utmp(struct utmp *ut, int pid) | |
692 | { | |
693 | int fd; | |
694 | struct utmp utmp; | |
695 | ||
696 | if ((fd = open(UTMP_FILE, O_RDONLY)) != -1) { | |
697 | /* XXX use atomicio */ | |
698 | while (read(fd, (char *)&utmp, sizeof(utmp)) == sizeof(utmp)) { | |
699 | if (pid == utmp.ut_pid) { | |
700 | ut->ut_jid = utmp.ut_jid; | |
701 | strncpy(ut->ut_tpath, utmp.ut_tpath, sizeof(utmp.ut_tpath)); | |
702 | strncpy(ut->ut_host, utmp.ut_host, sizeof(utmp.ut_host)); | |
703 | strncpy(ut->ut_name, utmp.ut_name, sizeof(utmp.ut_name)); | |
704 | break; | |
705 | } | |
706 | } | |
707 | close(fd); | |
708 | } else | |
709 | fatal("Unable to open utmp file"); | |
710 | } | |
711 | ||
712 | /* | |
713 | * tmpdir support. | |
714 | */ | |
715 | ||
716 | /* | |
717 | * find and delete jobs tmpdir. | |
718 | */ | |
719 | void | |
720 | cray_delete_tmpdir(char *login, int jid, uid_t uid) | |
721 | { | |
722 | static char jtmp[TPATHSIZ]; | |
723 | struct stat statbuf; | |
724 | int child, c, wstat; | |
725 | ||
726 | for (c = 'a'; c <= 'z'; c++) { | |
727 | snprintf(jtmp, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c); | |
728 | if (stat(jtmp, &statbuf) == 0 && statbuf.st_uid == uid) | |
729 | break; | |
730 | } | |
731 | ||
732 | if (c > 'z') | |
733 | return; | |
734 | ||
735 | if ((child = fork()) == 0) { | |
736 | execl(CLEANTMPCMD, CLEANTMPCMD, login, jtmp, (char *)NULL); | |
737 | fatal("cray_delete_tmpdir: execl of CLEANTMPCMD failed"); | |
738 | } | |
739 | ||
740 | while (waitpid(child, &wstat, 0) == -1 && errno == EINTR) | |
741 | ; | |
742 | } | |
743 | ||
744 | /* | |
745 | * Remove tmpdir on job termination. | |
746 | */ | |
747 | void | |
748 | cray_job_termination_handler(int sig) | |
749 | { | |
750 | int jid; | |
751 | char *login = NULL; | |
752 | struct jtab jtab; | |
753 | ||
754 | if ((jid = waitjob(&jtab)) == -1 || | |
755 | (login = uid2nam(jtab.j_uid)) == NULL) | |
756 | return; | |
757 | ||
758 | cray_delete_tmpdir(login, jid, jtab.j_uid); | |
759 | } | |
760 | ||
761 | /* | |
762 | * Set job id and create tmpdir directory. | |
763 | */ | |
764 | void | |
765 | cray_init_job(struct passwd *pw) | |
766 | { | |
767 | int jid; | |
768 | int c; | |
769 | ||
770 | jid = setjob(pw->pw_uid, WJSIGNAL); | |
771 | if (jid < 0) | |
772 | fatal("System call setjob failure"); | |
773 | ||
774 | for (c = 'a'; c <= 'z'; c++) { | |
775 | snprintf(cray_tmpdir, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c); | |
776 | if (mkdir(cray_tmpdir, JTMPMODE) != 0) | |
777 | continue; | |
778 | if (chown(cray_tmpdir, pw->pw_uid, pw->pw_gid) != 0) { | |
779 | rmdir(cray_tmpdir); | |
780 | continue; | |
781 | } | |
782 | break; | |
783 | } | |
784 | ||
785 | if (c > 'z') | |
786 | cray_tmpdir[0] = '\0'; | |
787 | } | |
788 | ||
789 | void | |
790 | cray_set_tmpdir(struct utmp *ut) | |
791 | { | |
792 | int jid; | |
793 | struct jtab jbuf; | |
794 | ||
795 | if ((jid = getjtab(&jbuf)) < 0) | |
796 | return; | |
797 | ||
798 | /* | |
799 | * Set jid and tmpdir in utmp record. | |
800 | */ | |
801 | ut->ut_jid = jid; | |
802 | strncpy(ut->ut_tpath, cray_tmpdir, TPATHSIZ); | |
803 | } | |
804 | #endif /* UNICOS */ | |
805 | ||
806 | #ifdef _UNICOSMP | |
807 | #include <pwd.h> | |
808 | /* | |
809 | * Set job id and create tmpdir directory. | |
810 | */ | |
811 | void | |
812 | cray_init_job(struct passwd *pw) | |
813 | { | |
814 | initrm_silent(pw->pw_uid); | |
815 | return; | |
816 | } | |
817 | #endif /* _UNICOSMP */ |