#include <utmp.h>
#include <sys/jtab.h>
#include <signal.h>
+#include <sys/priv.h>
+#include <sys/secparm.h>
+#include <sys/usrv.h>
+#include <sys/sysv.h>
+#include <sys/sectab.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <pwd.h>
#include <fcntl.h>
#include <errno.h>
+#include "bsd-cray.h"
+
char cray_tmpdir[TPATHSIZ+1]; /* job TMPDIR path */
/*
* Functions.
*/
-int cray_setup(uid_t, char *);
void cray_retain_utmp(struct utmp *, int);
void cray_create_tmpdir(int, uid_t, gid_t);
void cray_delete_tmpdir(char *, int , uid_t);
void cray_init_job(struct passwd *);
void cray_set_tmpdir(struct utmp *);
+
/*
* Orignal written by:
* Wayne Schroeder
* San Diego Supercomputer Center
* schroeder@sdsc.edu
*/
-int
+void
cray_setup(uid_t uid, char *username)
{
struct udb *p;
- extern struct udb *getudb();
extern char *setlimits();
int i, j;
int accts[MAXVIDS];
struct jtab jbuf;
int jid;
- if ((jid = getjtab (&jbuf)) < 0) {
- debug("getjtab");
- return -1;
- }
+ if ((jid = getjtab (&jbuf)) < 0) fatal("getjtab: no jid");
- /* Find all of the accounts for a particular user */
- err = setudb(); /* open and rewind the Cray User DataBase */
- if(err != 0) {
- debug("UDB open failure");
- return -1;
- }
+ err = setudb(); /* open and rewind the Cray User DataBase */
+ if(err != 0) fatal("UDB open failure");
naccts = 0;
- while ((p = getudb()) != UDB_NULL) {
- if (p->ue_uid == -1) break;
- if(uid == p->ue_uid) {
- for(j = 0; p->ue_acids[j] != -1 && j < MAXVIDS; j++) {
- accts[naccts] = p->ue_acids[j];
- naccts++;
- }
- }
- }
- endudb(); /* close the udb */
- if (naccts == 0 || accts[0] == 0) {
- debug("No Cray accounts found");
- return -1;
- }
-
- /* Perhaps someday we'll prompt users who have multiple accounts
- to let them pick one (like CRI's login does), but for now just set
- the account to the first entry. */
- if (acctid(0, accts[0]) < 0) {
- debug("System call acctid failed, accts[0]=%d",accts[0]);
- return -1;
+ p = getudbnam(username);
+ if (p == NULL) fatal("No UDB entry for %s", username);
+ if(uid != p->ue_uid)
+ fatal("UDB etnry %s uid(%d) does not match uid %d\n",
+ username, p->ue_uid, uid);
+ for(j = 0; p->ue_acids[j] != -1 && j < MAXVIDS; j++) {
+ accts[naccts] = p->ue_acids[j];
+ naccts++;
}
+ endudb(); /* close the udb */
+
+ if (naccts != 0) {
+ /* Perhaps someday we'll prompt users who have multiple accounts
+ to let them pick one (like CRI's login does), but for now just set
+ the account to the first entry. */
+ if (acctid(0, accts[0]) < 0)
+ fatal("System call acctid failed, accts[0]=%d",accts[0]);
+ }
- /* Now set limits, including CPU time for the (interactive) job and process,
- and set up permissions (for chown etc), etc. This is via an internal CRI
- routine, setlimits, used by CRI's login. */
+ /* Now set limits, including CPU time for the (interactive) job and process,
+ and set up permissions (for chown etc), etc. This is via an internal CRI
+ routine, setlimits, used by CRI's login. */
pid = getpid();
sr = setlimits(username, C_PROC, pid, UDBRC_INTER);
- if (sr != NULL) {
- debug("%.200s", sr);
- return -1;
- }
+ if (sr != NULL) fatal("%.200s", sr);
+
sr = setlimits(username, C_JOB, jid, UDBRC_INTER);
- if (sr != NULL) {
- debug("%.200s", sr);
- return -1;
- }
+ if (sr != NULL) fatal("%.200s", sr);
- return 0;
+}
+
+
+/*
+ * The rc.* and /etc/sdaemon methods of starting a program on unicos/unicosmk
+ * can have pal privileges that sshd can inherit which
+ * could allow a user to su to root with out a password.
+ * This subroutine clears all privileges.
+ */
+void
+drop_cray_privs()
+{
+#if defined(_SC_CRAY_PRIV_SU)
+ priv_proc_t* privstate;
+ int result;
+ extern int priv_set_proc();
+ extern priv_proc_t* priv_init_proc();
+ struct usrv usrv;
+
+ /*
+ * If ether of theses two flags are not set
+ * then don't allow this version of ssh to run.
+ */
+ if (!sysconf(_SC_CRAY_PRIV_SU)) fatal("Not PRIV_SU system.");
+ if (!sysconf(_SC_CRAY_POSIX_PRIV)) fatal("Not POSIX_PRIV.");
+
+ debug ("Dropping privileges.");
+
+ memset(&usrv, 0, sizeof(usrv));
+ if (setusrv(&usrv) < 0)
+ fatal ("%s(%d): setusrv(): %s\n", __FILE__, __LINE__, strerror(errno));
+
+ if ((privstate = priv_init_proc()) != NULL) {
+ result = priv_set_proc(privstate);
+ if ( result != 0 ) fatal ("%s(%d): priv_set_proc(): %s\n",
+ __FILE__, __LINE__, strerror(errno));
+ priv_free_proc(privstate);
+ }
+ debug ("Privileges should be cleared...");
+#else
+Cray systems must be run with _SC_CRAY_PRIV_SU on!
+#endif
}
}
return 1;
#else /* HAVE_DEV_PTS_AND_PTC */
+#ifdef _CRAY
+ char buf[64];
+ int i;
+ int highpty;
+
+#ifdef _SC_CRAY_NPTY
+ highpty = sysconf(_SC_CRAY_NPTY);
+ if (highpty == -1)
+ highpty = 128;
+#else
+ highpty = 128;
+#endif
+
+ for (i = 0; i < highpty; i++) {
+ snprintf(buf, sizeof(buf), "/dev/pty/%03d", i);
+ *ptyfd = open(buf, O_RDWR|O_NOCTTY);
+ if (*ptyfd < 0) continue;
+ snprintf(namebuf, namebuflen, "/dev/ttyp%03d", i);
+ /* Open the slave side. */
+ *ttyfd = open(namebuf, O_RDWR|O_NOCTTY);
+ if (*ttyfd < 0) {
+ error("%.100s: %.100s", namebuf, strerror(errno));
+ close(*ptyfd);
+ }
+ return 1;
+ }
+ return 0;
+#else
/* BSD-style pty code. */
char buf[64];
int i;
return 1;
}
return 0;
+#endif /* CRAY */
#endif /* HAVE_DEV_PTS_AND_PTC */
#endif /* HAVE_DEV_PTMX */
#endif /* HAVE__GETPTY */
void
pty_make_controlling_tty(int *ttyfd, const char *ttyname)
{
+#ifdef _CRAY
+ int fd;
+
+ if (setsid() < 0)
+ error("setsid: %.100s", strerror(errno));
+
+ fd = open(ttyname, O_RDWR|O_NOCTTY);
+ if (fd >= 0) {
+ signal(SIGHUP, SIG_IGN);
+ ioctl(fd, TCVHUP, (char *)0);
+ signal(SIGHUP, SIG_DFL);
+ setpgid(0,0);
+ close(fd);
+ } else {
+ error("Failed to disconnect from controlling tty.");
+ }
+
+
+ debug("Setting controlling tty using TCSETCTTY.\n");
+ ioctl(*ttyfd, TCSETCTTY, NULL);
+
+ fd = open("/dev/tty", O_RDWR);
+
+ if (fd < 0)
+ error("%.100s: %.100s", ttyname, strerror(errno));
+
+ close(*ttyfd);
+ *ttyfd = fd;
+#else
int fd;
#ifdef USE_VHANGUP
void *old;
else {
close(fd);
}
+#endif
}
/* Changes the window size associated with the pty. */
andersk / openssh.git / commitdiff
