+++ /dev/null
-/* checktty.c - linked into login, checks user against /etc/usertty
- Created 25-Aug-95 by Peter Orbaek <poe@daimi.aau.dk>
- Fixed by JDS June 1996 to clear lists and close files
-
- 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
- - added Native Language Support
-
-*/
-
-#include <sys/param.h>
-
-#include <pwd.h>
-#include <grp.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <time.h>
-#include <sys/stat.h>
-#include <netdb.h>
-#include <syslog.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <ctype.h>
-#include <limits.h>
-#include <netinet/in.h>
-#include "nls.h"
-
-#include <sys/sysmacros.h>
-#ifdef HAVE_LINUX_MAJOR_H
-#include <linux/major.h>
-#endif
-
-#include "pathnames.h"
-#include "login.h"
-#include "strutils.h"
-
-#ifndef TTY_MAJOR
-#define TTY_MAJOR 4
-#endif
-
-static gid_t mygroups[NGROUPS_MAX];
-static int num_groups;
-
-#define NAMELEN 128
-
-/* linked list of names */
-struct grplist {
- struct grplist *next;
- char name[NAMELEN];
-};
-
-enum State { StateUsers, StateGroups, StateClasses };
-
-#define CLASSNAMELEN 32
-
-struct ttyclass {
- struct grplist *first;
- struct ttyclass *next;
- char classname[CLASSNAMELEN];
-};
-
-struct ttyclass *ttyclasses = NULL;
-
-static int
-am_in_group(char *group)
-{
- struct group *g;
- gid_t *ge;
-
- g = getgrnam(group);
- if (g) {
- for (ge = mygroups; ge < mygroups + num_groups; ge++) {
- if (g->gr_gid== *ge) return 1;
- }
- }
- return 0;
-}
-
-static void
-find_groups()
-{
- num_groups = getgroups(NGROUPS_MAX, mygroups);
-}
-
-static struct ttyclass *
-new_class(char *class)
-{
- struct ttyclass *tc;
-
- tc = (struct ttyclass *)malloc(sizeof(struct ttyclass));
- if (tc == NULL) {
- printf(_("login: memory low, login may fail\n"));
- syslog(LOG_WARNING, _("can't malloc for ttyclass"));
- return NULL;
- }
-
- tc->next = ttyclasses;
- tc->first = NULL;
- xstrncpy(tc->classname, class, CLASSNAMELEN);
- ttyclasses = tc;
- return tc;
-}
-
-static void
-add_to_class(struct ttyclass *tc, char *tty)
-{
- struct grplist *ge;
-
- if (tc == NULL) return;
-
- ge = (struct grplist *)malloc(sizeof(struct grplist));
- if (ge == NULL) {
- printf(_("login: memory low, login may fail\n"));
- syslog(LOG_WARNING, _("can't malloc for grplist"));
- return;
- }
-
- ge->next = tc->first;
- xstrncpy(ge->name, tty, NAMELEN);
- tc->first = ge;
-}
-
-
-/* return true if tty is a pty. Very linux dependent */
-static int
-isapty(const char *tty)
-{
-#ifdef __linux__
- char devname[100];
- struct stat stb;
-
- /* avoid snprintf - old systems do not have it */
- if (strlen(tty) + 6 > sizeof(devname))
- return 0;
- sprintf(devname, "/dev/%s", tty);
-
- if((stat(devname, &stb) >= 0) && S_ISCHR(stb.st_mode)) {
- int majordev = major(stb.st_rdev);
-
- /* this is for linux versions before 1.3: use major 4 */
- if(majordev == TTY_MAJOR && minor(stb.st_rdev) >= 192)
- return 1;
-
-#if defined(PTY_SLAVE_MAJOR)
- /* this is for linux 1.3 and newer: use major 3 */
- if(majordev == PTY_SLAVE_MAJOR)
- return 1;
-#endif
-
-#if defined(UNIX98_PTY_SLAVE_MAJOR) && defined(UNIX98_PTY_MAJOR_COUNT)
- /* this is for linux 2.1.116 and newer: use majors 136-143 */
- if(majordev >= UNIX98_PTY_SLAVE_MAJOR &&
- majordev < UNIX98_PTY_SLAVE_MAJOR + UNIX98_PTY_MAJOR_COUNT)
- return 1;
-#endif
-
- }
-#endif /* __linux__ */
- return 0;
-}
-
-
-/* IPv4 -- pattern is x.x.x.x/y.y.y.y (net/mask)*/
-static int
-hnmatch_ip4(const char *pat)
-{
- int x1, x2, x3, x4, y1, y2, y3, y4;
- unsigned long p, mask, a;
- unsigned char *ha;
-
- /* pattern is an IP QUAD address and a mask x.x.x.x/y.y.y.y */
- if (sscanf(pat, "%d.%d.%d.%d/%d.%d.%d.%d",
- &x1, &x2, &x3, &x4, &y1, &y2, &y3, &y4) < 8)
- return 0;
-
- p = (((unsigned long)x1<<24)+((unsigned long)x2<<16)
- +((unsigned long)x3<<8)+((unsigned long)x4));
- mask = (((unsigned long)y1<<24)+((unsigned long)y2<<16)
- +((unsigned long)y3<<8)+((unsigned long)y4));
-
- if (hostaddress[0] == 0)
- return 0;
-
- ha = (unsigned char *)hostaddress;
- a = (((unsigned long)ha[0]<<24)+((unsigned long)ha[1]<<16)
- +((unsigned long)ha[2]<<8)+((unsigned long)ha[3]));
- return ((p & mask) == (a & mask));
-}
-
-/* IPv6 -- pattern is [hex:hex:....]/number ([net]/mask) */
-static int
-hnmatch_ip6(const char *pat)
-{
- char *patnet;
- char *patmask;
- struct in6_addr addr;
- struct addrinfo hints, *res;
- struct sockaddr_in6 net;
- int mask_len, i = 0;
- char *p;
-
- if (pat == NULL || *pat != '[')
- return 0;
-
- memcpy(&addr, hostaddress, sizeof(addr));
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = AF_INET6;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
-
- patnet = strdup(pat);
-
- /* match IPv6 address against [netnumber]/prefixlen */
- if (!(p = strchr(patnet, ']')))
- goto mismatch;
-
- *p++ = '\0';
-
- if (! (*p == '/' && isdigit((unsigned char) *(p + 1))))
- goto mismatch;
-
- patmask = p + 1;
-
- /* prepare net address */
- if (getaddrinfo(patnet + 1, NULL, &hints, &res) != 0)
- goto mismatch;
-
- memcpy(&net, res->ai_addr, sizeof(net));
- freeaddrinfo(res);
-
- /* convert mask to number */
- if ((mask_len = atoi(patmask)) < 0 || mask_len > 128)
- goto mismatch;
-
- /* compare */
- while (mask_len > 0) {
- if (mask_len < 32) {
- uint32_t mask = htonl(~(0xffffffff >> mask_len));
-
- if ((*(uint32_t *)&addr.s6_addr[i] & mask) !=
- (*(uint32_t *)&net.sin6_addr.s6_addr[i] & mask))
- goto mismatch;
- break;
- }
- if (*(uint32_t *)&addr.s6_addr[i] !=
- *(uint32_t *)&net.sin6_addr.s6_addr[i])
- goto mismatch;
- i += 4;
- mask_len -= 32;
- }
-
- free(patnet);
- return 1;
-
-mismatch:
- free(patnet);
- return 0;
-}
-
-/* match the hostname hn against the pattern pat */
-static int
-hnmatch(const char *hn, const char *pat)
-{
-
- if ((hn == NULL) && (strcmp(pat, "localhost") == 0))
- return 1;
- if ((hn == NULL) || *hn == '\0')
- return 0;
-
- if (*pat >= '0' && *pat <= '9')
- return hostfamily == AF_INET ? hnmatch_ip4(pat) : 0;
- else if (*pat == '[')
- return hostfamily == AF_INET6 ? hnmatch_ip6(pat) : 0;
- else {
- /* pattern is a suffix of a FQDN */
- int n = strlen(pat),
- m = strlen(hn);
-
- if (n > m)
- return 0;
- return (strcasecmp(pat, hn + m - n) == 0);
- }
-}
-
-#ifdef MAIN_TEST_CHECKTTY
-
-char hostaddress[16];
-sa_family_t hostfamily;
-char *hostname;
-
-void sleepexit(int eval __attribute__ ((__unused__)))
-{
- /* dummy for this test */
-}
-
-void badlogin(const char *s __attribute__ ((__unused__)))
-{
- /* dummy for this test */
-}
-
-int
-main(int argc __attribute__ ((__unused__)),
- char **argv __attribute__ ((__unused__)))
-{
- struct addrinfo hints, *info = NULL;
- struct addrexp {
- const char *range;
- const char *ip;
- } alist[] = {
- { "130.225.16.0/255.255.254.0", "130.225.16.1" },
- { "130.225.16.0/255.255.254.0", "10.20.30.1" },
- { "130.225.0.0/255.254.0.0", "130.225.16.1" },
- { "130.225.0.0/255.254.0.0", "130.225.17.1" },
- { "130.225.0.0/255.254.0.0", "150.160.170.180" },
- { "[3ffe:505:2:1::]/64", "3ffe:505:2:1::" },
- { "[3ffe:505:2:1::]/64", "3ffe:505:2:2::" },
- { "[3ffe:505:2:1::]/64", "3ffe:505:2:1:ffff:ffff::" },
- { NULL, NULL }
- }, *item;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = AF_UNSPEC;
- hints.ai_flags = AI_NUMERICHOST | AI_PASSIVE | AI_ADDRCONFIG;
- hints.ai_socktype = SOCK_STREAM;
-
- for (item = alist; item->range; item++) {
-
- printf("hnmatch() on %-30s <-- %-15s: ", item->range, item->ip);
-
- if (getaddrinfo(item->ip, NULL, &hints, &info)==0 && info) {
- if (info->ai_family == AF_INET) {
- struct sockaddr_in *sa =
- (struct sockaddr_in *) info->ai_addr;
- memcpy(hostaddress, &(sa->sin_addr),
- sizeof(sa->sin_addr));
- }
- else if (info->ai_family == AF_INET6) {
- struct sockaddr_in6 *sa =
- (struct sockaddr_in6 *) info->ai_addr;
- memcpy(hostaddress, &(sa->sin6_addr),
- sizeof(sa->sin6_addr));
- }
- hostfamily = info->ai_family;
- freeaddrinfo(info);
- printf("%s\n", hnmatch("dummy", item->range) ?
- "match" : "mismatch");
- }
- else
- printf("getaddrinfo() failed\n");
-
- }
- return EXIT_SUCCESS;
-}
-#endif /* MAIN_TEST_CHECKTTY */
-
-static char *wdays[] = { "sun", "mon", "tue", "wed", "thu", "fri", "sat" };
-
-/* example timespecs:
-
- mon:tue:wed:8-17
-
- meaning monday, tuesday or wednesday between 8:00 and 17:59
-
- 4:5:13:fri
-
- meaning fridays from 4:00 to 5:59 and from 13:00 to 13:59
-*/
-static int
-timeok(struct tm *t, char *spec)
-{
- char *p, *q;
- int dayok = 0;
- int hourok = 0;
- int h, h2;
- char *sp;
-
- sp = spec;
- while ((p = strsep(&sp, ":"))) {
- if (*p >= '0' && *p <= '9') {
- h = atoi(p);
- if (h == t->tm_hour) hourok = 1;
- if ((q = strchr(p, '-')) && (q[1] >= '0' && q[1] <= '9')) {
- h2 = atoi(q+1);
- if (h <= t->tm_hour && t->tm_hour <= h2) hourok = 1;
- }
- } else if (strcasecmp(wdays[t->tm_wday], p) == 0) {
- dayok = 1;
- }
- }
-
- return (dayok && hourok);
-}
-
-/* return true if tty equals class or is in the class defined by class.
- Also return true if hostname matches the hostname pattern, class
- or a pattern in the class named by class. */
-static int
-in_class(const char *tty, char *class)
-{
- struct ttyclass *tc;
- struct grplist *ge;
- time_t t;
- char *p;
- char timespec[256];
- struct tm *tm;
- char *n;
-
- time(&t);
- tm = localtime(&t);
-
- if (class[0] == '[') {
- if ((p = strchr(class, ']'))) {
- *p = 0;
- xstrncpy(timespec, class+1, sizeof(timespec));
- *p = ']';
- if(!timeok(tm, timespec)) return 0;
- class = p+1;
- }
- /* really ought to warn about syntax error */
- }
-
- if (strcmp(tty, class) == 0) return 1;
-
- if ((class[0] == '@') && isapty(tty)
- && hnmatch(hostname, class+1)) return 1;
-
- for (tc = ttyclasses; tc; tc = tc->next) {
- if (strcmp(tc->classname, class) == 0) {
- for (ge = tc->first; ge; ge = ge->next) {
-
- n = ge->name;
- if (n[0] == '[') {
- if ((p = strchr(n, ']'))) {
- *p = 0;
- xstrncpy(timespec, n+1, sizeof(timespec));
- *p = ']';
- if(!timeok(tm, timespec)) continue;
- n = p+1;
- }
- /* really ought to warn about syntax error */
- }
-
- if (strcmp(n, tty) == 0) return 1;
-
- if ((n[0] == '@') && isapty(tty)
- && hnmatch(hostname, n+1)) return 1;
- }
- return 0;
- }
- }
- return 0;
-}
-
-/* start JDS - SBA */
-static void
-free_group(struct grplist *ge)
-{
- if (ge) {
- memset(ge->name, 0, NAMELEN);
- free_group(ge->next);
- free(ge->next);
- ge->next = NULL;
- }
-}
-
-static void
-free_class(struct ttyclass *tc)
-{
- if (tc) {
- memset(tc->classname, 0, CLASSNAMELEN);
- free_group(tc->first);
- tc->first = NULL;
- free_class(tc->next);
- free(tc->next);
- tc->next = NULL;
- }
-}
-
-static void
-free_all(void)
-{
- free_class(ttyclasses);
- ttyclasses = NULL;
-}
-/* end JDS - SBA */
-
-void
-checktty(const char *user, const char *tty, struct passwd *pwd)
-{
- FILE *f;
- char buf[256], defaultbuf[256];
- char *ptr;
- enum State state = StateUsers;
- int found_match = 0;
-
- /* no /etc/usertty, default to allow access */
- if (!(f = fopen(_PATH_USERTTY, "r"))) return;
-
- if (pwd == NULL) {
- fclose(f);
- return; /* misspelled username handled elsewhere */
- }
-
- find_groups();
-
- defaultbuf[0] = 0;
- while(fgets(buf, 255, f)) {
-
- /* strip comments */
- for(ptr = buf; ptr < buf + 256; ptr++)
- if(*ptr == '#') *ptr = 0;
-
- if (buf[0] == '*') {
- xstrncpy(defaultbuf, buf, 256);
- continue;
- }
-
- if (strncmp("GROUPS", buf, 6) == 0) {
- state = StateGroups;
- continue;
- } else if (strncmp("USERS", buf, 5) == 0) {
- state = StateUsers;
- continue;
- } else if (strncmp("CLASSES", buf, 7) == 0) {
- state = StateClasses;
- continue;
- }
-
- strtok(buf, " \t");
- if((state == StateUsers && (strncmp(user, buf, 8) == 0))
- || (state == StateGroups && am_in_group(buf))) {
- found_match = 1; /* we found a line matching the user */
- while((ptr = strtok(NULL, "\t\n "))) {
- if (in_class(tty, ptr)) {
- fclose(f);
- free_all(); /* JDS */
- return;
- }
- }
- } else if (state == StateClasses) {
- /* define a new tty/host class */
- struct ttyclass *tc = new_class(buf);
-
- while ((ptr = strtok(NULL, "\t\n "))) {
- add_to_class(tc, ptr);
- }
- }
- }
- fclose(f);
-
- /* user is not explicitly mentioned in /etc/usertty, if there was
- a default rule, use that */
- if (defaultbuf[0]) {
- strtok(defaultbuf, " \t");
- while((ptr = strtok(NULL, "\t\n "))) {
- if (in_class(tty, ptr)) {
- free_all(); /* JDS */
- return;
- }
- }
-
- /* there was a default rule, but user didn't match, reject! */
- printf(_("Login on %s from %s denied by default.\n"), tty, hostname);
- badlogin(user);
- sleepexit(EXIT_FAILURE);
- }
-
- if (found_match) {
- /* if we get here, /etc/usertty exists, there's a line
- matching our username, but it doesn't contain the
- name of the tty where the user is trying to log in.
- So deny access! */
-
- printf(_("Login on %s from %s denied.\n"), tty, hostname);
- badlogin(user);
- sleepexit(EXIT_FAILURE);
- }
-
- /* users not matched in /etc/usertty are by default allowed access
- on all tty's */
- free_all(); /* JDS */
-}
#include "xalloc.h"
#include "c.h"
-#ifdef HAVE_SECURITY_PAM_MISC_H
-# include <security/pam_appl.h>
-# include <security/pam_misc.h>
-# define PAM_MAX_LOGIN_TRIES 3
-# define PAM_FAIL_CHECK if (retcode != PAM_SUCCESS) { \
+#include <security/pam_appl.h>
+#include <security/pam_misc.h>
+#define PAM_MAX_LOGIN_TRIES 3
+#define PAM_FAIL_CHECK if (retcode != PAM_SUCCESS) { \
fprintf(stderr,"\n%s\n",pam_strerror(pamh, retcode)); \
syslog(LOG_ERR,"%s",pam_strerror(pamh, retcode)); \
pam_end(pamh, retcode); exit(EXIT_FAILURE); \
}
-# define PAM_END { \
+#define PAM_END { \
pam_setcred(pamh, PAM_DELETE_CRED); \
retcode = pam_close_session(pamh,0); \
pam_end(pamh,retcode); \
}
-#endif
#include <lastlog.h>
struct passwd *pwd;
-#ifdef HAVE_SECURITY_PAM_MISC_H
static struct passwd pwdcopy;
-#endif
char hostaddress[16]; /* used in checktty.c */
sa_family_t hostfamily; /* used in checktty.c */
char *hostname; /* idem */
}
#endif
-#ifdef HAVE_SECURITY_PAM_MISC_H
/*
* Log failed login attempts in _PATH_BTMP if that exists.
* Must be called only with username the name of an actual user.
kill(-child_pid, SIGHUP); /* because the shell often ignores SIGTERM */
}
-#endif /* HAVE_SECURITY_PAM_MISC_H */
-
#ifdef HAVE_LIBAUDIT
static void
logaudit(const char *tty, const char *username, const char *hostname,
# define logaudit(tty, username, hostname, pwd, status)
#endif /* HAVE_LIBAUDIT */
-#ifdef HAVE_SECURITY_PAM_MISC_H
/* encapsulate stupid "void **" pam_get_item() API */
int
get_pam_username(pam_handle_t *pamh, char **name)
*name = (char *) item;
return rc;
}
-#endif
/*
* We need to check effective UID/GID. For example $HOME could be on root
char *childArgv[10];
char *buff;
int childArgc = 0;
-#ifdef HAVE_SECURITY_PAM_MISC_H
int retcode;
pam_handle_t *pamh = NULL;
struct pam_conv conv = { misc_conv, NULL };
struct sigaction sa, oldsa_hup, oldsa_term;
-#else
- int ask;
- char *salt, *pp;
-#endif
#ifdef LOGIN_CHOWN_VCS
char vcsn[20], vcsan[20];
#endif
argc -= optind;
argv += optind;
-#ifndef HAVE_SECURITY_PAM_MISC_H
- ask = *argv ? 0 : 1; /* Do we need ask for login name? */
-#endif
-
if (*argv) {
char *p = *argv;
username = strdup(p);
openlog("login", LOG_ODELAY, LOG_AUTHPRIV);
-#ifdef HAVE_SECURITY_PAM_MISC_H
/*
* username is initialized to NULL
* and if specified on the command line it is set.
pam_close_session(pamh, 0);
PAM_FAIL_CHECK;
-#else /* ! HAVE_SECURITY_PAM_MISC_H */
-
- for (cnt = 0;; ask = 1) {
-
- if (ask) {
- fflag = 0;
- getloginname();
- }
-
- /* Dirty patch to fix a gigantic security hole when using
- yellow pages. This problem should be solved by the
- libraries, and not by programs, but this must be fixed
- urgently! If the first char of the username is '+', we
- avoid login success.
- Feb 95 <alvaro@etsit.upm.es> */
-
- if (username[0] == '+') {
- puts(_("Illegal username"));
- badlogin(username);
- sleepexit(EXIT_FAILURE);
- }
-
- /* (void)strcpy(tbuf, username); why was this here? */
- if ((pwd = getpwnam(username))) {
-# ifdef SHADOW_PWD
- struct spwd *sp;
-
- if ((sp = getspnam(username)))
- pwd->pw_passwd = sp->sp_pwdp;
-# endif
- salt = pwd->pw_passwd;
- } else
- salt = "xx";
-
- if (pwd) {
- initgroups(username, pwd->pw_gid);
- checktty(username, tty_name, pwd); /* in checktty.c */
- }
-
- /* if user not super-user, check for disabled logins */
- if (pwd == NULL || pwd->pw_uid)
- checknologin();
-
- /*
- * Disallow automatic login to root; if not invoked by
- * root, disallow if the uid's differ.
- */
- if (fflag && pwd) {
- int uid = getuid();
-
- passwd_req = pwd->pw_uid == 0 ||
- (uid && uid != pwd->pw_uid);
- }
-
- /*
- * If trying to log in as root, but with insecure terminal,
- * refuse the login attempt.
- */
- if (pwd && pwd->pw_uid == 0 && !rootterm(tty_name)) {
- warnx(_("%s login refused on this terminal."),
- pwd->pw_name);
-
- if (hostname)
- syslog(LOG_NOTICE,
- _("LOGIN %s REFUSED FROM %s ON TTY %s"),
- pwd->pw_name, hostname, tty_name);
- else
- syslog(LOG_NOTICE,
- _("LOGIN %s REFUSED ON TTY %s"),
- pwd->pw_name, tty_name);
- logaudit(tty_name, pwd->pw_name, hostname, pwd, 0);
- continue;
- }
-
- /*
- * If no pre-authentication and a password exists
- * for this user, prompt for one and verify it.
- */
- if (!passwd_req || (pwd && !*pwd->pw_passwd))
- break;
-
- setpriority(PRIO_PROCESS, 0, -4);
- pp = getpass(_("Password: "));
-
-# ifdef CRYPTOCARD
- if (strncmp(pp, "CRYPTO", 6) == 0) {
- if (pwd && cryptocard()) break;
- }
-# endif /* CRYPTOCARD */
-
- p = crypt(pp, salt);
- setpriority(PRIO_PROCESS, 0, 0);
-
- memset(pp, 0, strlen(pp));
-
- if (pwd && !strcmp(p, pwd->pw_passwd))
- break;
-
- printf(_("Login incorrect\n"));
- badlogin(username); /* log ALL bad logins */
- failures++;
-
- /* we allow 10 tries, but after 3 we start backing off */
- if (++cnt > 3) {
- if (cnt >= 10) {
- sleepexit(EXIT_FAILURE);
- }
- sleep((unsigned int)((cnt - 3) * 5));
- }
- }
-#endif /* !HAVE_SECURITY_PAM_MISC_H */
-
/* committed to login -- turn off timeout */
alarm((unsigned int)0);
*/
setenv("LOGNAME", pwd->pw_name, 1);
-#ifdef HAVE_SECURITY_PAM_MISC_H
{
int i;
char ** env = pam_getenvlist(pamh);
}
}
}
-#endif
setproctitle("login", username);
signal(SIGQUIT, SIG_DFL);
signal(SIGTSTP, SIG_IGN);
-#ifdef HAVE_SECURITY_PAM_MISC_H
-
memset(&sa, 0, sizeof(sa));
sa.sa_handler = SIG_IGN;
sigaction(SIGINT, &sa, NULL);
*/
if (ioctl(0, TIOCSCTTY, 1))
syslog(LOG_ERR, _("TIOCSCTTY failed: %m"));
-#endif
signal(SIGINT, SIG_DFL);
/* discard permissions last so can't get killed and drop core */
exit(EXIT_SUCCESS);
}
-#ifndef HAVE_SECURITY_PAM_MISC_H
-static void
-getloginname(void) {
- int ch, cnt, cnt2;
- char *p;
- static char nbuf[UT_NAMESIZE + 1];
-
- cnt2 = 0;
- for (;;) {
- cnt = 0;
- printf(_("\n%s login: "), thishost); fflush(stdout);
- for (p = nbuf; (ch = getchar()) != '\n'; ) {
- if (ch == EOF) {
- badlogin("EOF");
- exit(EXIT_FAILURE);
- }
- if (p < nbuf + UT_NAMESIZE)
- *p++ = ch;
-
- cnt++;
- if (cnt > UT_NAMESIZE + 20) {
- badlogin(_("NAME too long"));
- errx(EXIT_FAILURE, _("login name much too long."));
- }
- }
- if (p > nbuf) {
- if (nbuf[0] == '-')
- warnx(_("login names may not start with '-'."));
- else {
- *p = '\0';
- username = nbuf;
- break;
- }
- }
-
- cnt2++;
- if (cnt2 > 50) {
- badlogin(_("EXCESSIVE linefeeds"));
- errx(EXIT_FAILURE, _("too many bare linefeeds."));
- }
- }
-}
-#endif
-
/*
* Robert Ambrose writes:
* A couple of my users have a problem with login processes hanging around
timedout2(0);
}
-#ifndef HAVE_SECURITY_PAM_MISC_H
-int
-rootterm(char * ttyn)
-{
- int fd;
- char buf[100],*p;
- int cnt, more = 0;
-
- fd = open(_PATH_SECURETTY, O_RDONLY);
- if(fd < 0) return 1;
-
- /* read each line in /etc/securetty, if a line matches our ttyline
- then root is allowed to login on this tty, and we should return
- true. */
- for(;;) {
- p = buf; cnt = 100;
- while(--cnt >= 0 && (more = read(fd, p, 1)) == 1 && *p != '\n') p++;
- if(more && *p == '\n') {
- *p = '\0';
- if(!strcmp(buf, ttyn)) {
- close(fd);
- return 1;
- } else
- continue;
- } else {
- close(fd);
- return 0;
- }
- }
-}
-#endif /* !HAVE_SECURITY_PAM_MISC_H */
-
jmp_buf motdinterrupt;
void
longjmp(motdinterrupt, 1);
}
-#ifndef HAVE_SECURITY_PAM_MISC_H /* PAM takes care of this */
-void
-checknologin(void) {
- int fd, nchars;
- char tbuf[8192];
-
- if ((fd = open(_PATH_NOLOGIN, O_RDONLY, 0)) >= 0) {
- while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) {
- if (write(fileno(stdout), tbuf, nchars)) {
- ; /* glibc warn_unused_result */
- }
- }
- close(fd);
- sleepexit(EXIT_SUCCESS);
- }
-}
-#endif
-
void
dolastlog(int quiet) {
struct lastlog ll;
projects / thirdparty / util-linux.git / commitdiff
