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Diffstat (limited to 'Linux-PAM/modules/pam_tally/pam_tally.c')
-rw-r--r--Linux-PAM/modules/pam_tally/pam_tally.c840
1 files changed, 840 insertions, 0 deletions
diff --git a/Linux-PAM/modules/pam_tally/pam_tally.c b/Linux-PAM/modules/pam_tally/pam_tally.c
new file mode 100644
index 00000000..1e48662e
--- /dev/null
+++ b/Linux-PAM/modules/pam_tally/pam_tally.c
@@ -0,0 +1,840 @@
+/*
+ * pam_tally.c
+ *
+ * $Id: pam_tally.c,v 1.15 2005/01/24 14:04:17 t8m Exp $
+ */
+
+
+/* By Tim Baverstock <warwick@mmm.co.uk>, Multi Media Machine Ltd.
+ * 5 March 1997
+ *
+ * Stuff stolen from pam_rootok and pam_listfile
+ *
+ * Changes by Tomas Mraz <tmraz@redhat.com> 5 January 2005
+ * Audit option added for Tomas patch by Sebastien Tricaud <toady@gscore.org> 13 January 2005
+ */
+
+#include <security/_pam_aconf.h>
+
+#if defined(MAIN) && defined(MEMORY_DEBUG)
+# undef exit
+#endif /* defined(MAIN) && defined(MEMORY_DEBUG) */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <time.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include "faillog.h"
+
+#ifndef TRUE
+#define TRUE 1L
+#define FALSE 0L
+#endif
+
+/*
+ * here, we make a definition for the externally accessible function
+ * in this file (this definition is required for static a module
+ * but strongly encouraged generally) it is used to instruct the
+ * modules include file to define the function prototypes.
+ */
+
+#define PAM_SM_AUTH
+#define PAM_SM_ACCOUNT
+/* #define PAM_SM_SESSION */
+/* #define PAM_SM_PASSWORD */
+
+#include <security/pam_modules.h>
+#include <security/_pam_modutil.h>
+
+/*---------------------------------------------------------------------*/
+
+#define DEFAULT_LOGFILE "/var/log/faillog"
+#define MODULE_NAME "pam_tally"
+
+#define tally_t unsigned short int
+#define TALLY_FMT "%hu"
+#define TALLY_HI ((tally_t)~0L)
+
+#define UID_FMT "%hu"
+
+#ifndef FILENAME_MAX
+# define FILENAME_MAX MAXPATHLEN
+#endif
+
+struct fail_s {
+ struct faillog fs_faillog;
+#ifndef MAIN
+ time_t fs_fail_time;
+#endif /* ndef MAIN */
+};
+
+struct tally_options {
+ const char *filename;
+ tally_t deny;
+ long lock_time;
+ long unlock_time;
+ unsigned int ctrl;
+};
+
+#define PHASE_UNKNOWN 0
+#define PHASE_AUTH 1
+#define PHASE_ACCOUNT 2
+#define PHASE_SESSION 3
+
+#define OPT_MAGIC_ROOT 01
+#define OPT_FAIL_ON_ERROR 02
+#define OPT_DENY_ROOT 04
+#define OPT_PER_USER 010
+#define OPT_NO_LOCK_TIME 020
+#define OPT_NO_RESET 040
+#define OPT_AUDIT 100
+
+
+/*---------------------------------------------------------------------*/
+
+/* some syslogging */
+
+static void _pam_log(int err, const char *format, ...)
+{
+ va_list args;
+ va_start(args, format);
+
+#ifdef MAIN
+ vfprintf(stderr,format,args);
+ fprintf(stderr,"\n");
+#else
+ openlog(MODULE_NAME, LOG_CONS|LOG_PID, LOG_AUTH);
+ vsyslog(err, format, args);
+ closelog();
+#endif
+ va_end(args);
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: parse arguments --- */
+
+static void log_phase_no_auth( int phase, const char *argv )
+{
+ if ( phase != PHASE_AUTH ) {
+ _pam_log(LOG_ERR,
+ MODULE_NAME ": option %s allowed in auth phase only", argv);
+ }
+}
+
+static int tally_parse_args( struct tally_options *opts, int phase,
+ int argc, const char **argv )
+{
+ memset(opts, 0, sizeof(*opts));
+ opts->filename = DEFAULT_LOGFILE;
+
+ for ( ; argc-- > 0; ++argv ) {
+
+ if ( ! strncmp( *argv, "file=", 5 ) ) {
+ const char *from = *argv + 5;
+ if ( *from!='/' || strlen(from)>FILENAME_MAX-1 ) {
+ _pam_log(LOG_ERR,
+ MODULE_NAME ": filename not /rooted or too long; ",
+ *argv);
+ return PAM_AUTH_ERR;
+ }
+ opts->filename = from;
+ }
+ else if ( ! strcmp( *argv, "onerr=fail" ) ) {
+ opts->ctrl |= OPT_FAIL_ON_ERROR;
+ }
+ else if ( ! strcmp( *argv, "onerr=succeed" ) ) {
+ opts->ctrl &= ~OPT_FAIL_ON_ERROR;
+ }
+ else if ( ! strcmp( *argv, "magic_root" ) ) {
+ opts->ctrl |= OPT_MAGIC_ROOT;
+ }
+ else if ( ! strcmp( *argv, "even_deny_root_account" ) ) {
+ log_phase_no_auth(phase, *argv);
+ opts->ctrl |= OPT_DENY_ROOT;
+ }
+ else if ( ! strncmp( *argv, "deny=", 5 ) ) {
+ log_phase_no_auth(phase, *argv);
+ if ( sscanf((*argv)+5,TALLY_FMT,&opts->deny) != 1 ) {
+ _pam_log(LOG_ERR,"bad number supplied; %s",*argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ( ! strncmp( *argv, "lock_time=", 10 ) ) {
+ log_phase_no_auth(phase, *argv);
+ if ( sscanf((*argv)+10,"%ld",&opts->lock_time) != 1 ) {
+ _pam_log(LOG_ERR,"bad number supplied; %s",*argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ( ! strncmp( *argv, "unlock_time=", 12 ) ) {
+ log_phase_no_auth(phase, *argv);
+ if ( sscanf((*argv)+12,"%ld",&opts->unlock_time) != 1 ) {
+ _pam_log(LOG_ERR,"bad number supplied; %s",*argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ( ! strcmp( *argv, "per_user" ) )
+ {
+ log_phase_no_auth(phase, *argv);
+ opts->ctrl |= OPT_PER_USER;
+ }
+ else if ( ! strcmp( *argv, "no_lock_time") )
+ {
+ log_phase_no_auth(phase, *argv);
+ opts->ctrl |= OPT_NO_LOCK_TIME;
+ }
+ else if ( ! strcmp( *argv, "no_reset" ) ) {
+ opts->ctrl |= OPT_NO_RESET;
+ }
+ else if ( ! strcmp ( *argv, "audit") ) {
+ opts->ctrl |= OPT_AUDIT;
+ }
+ else {
+ _pam_log(LOG_ERR, MODULE_NAME ": unknown option; %s",*argv);
+ }
+ }
+
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: get uid (and optionally username) from PAM or
+ cline_user --- */
+
+#ifdef MAIN
+static char *cline_user=0; /* cline_user is used in the administration prog */
+#endif
+
+static int pam_get_uid( pam_handle_t *pamh, uid_t *uid, const char **userp, struct tally_options *opts)
+ {
+ const char *user = NULL;
+ struct passwd *pw;
+
+#ifdef MAIN
+ user = cline_user;
+#else
+ pam_get_user( pamh, &user, NULL );
+#endif
+
+ if ( !user || !*user ) {
+ _pam_log(LOG_ERR, MODULE_NAME ": pam_get_uid; user?");
+ return PAM_AUTH_ERR;
+ }
+
+ if ( ! ( pw = _pammodutil_getpwnam( pamh, user ) ) ) {
+ opts->ctrl & OPT_AUDIT ?
+ _pam_log(LOG_ERR,MODULE_NAME ": pam_get_uid; no such user %s",user) :
+ _pam_log(LOG_ERR,MODULE_NAME ": pam_get_uid; no such user");
+ return PAM_USER_UNKNOWN;
+ }
+
+ if ( uid ) *uid = pw->pw_uid;
+ if ( userp ) *userp = user;
+ return PAM_SUCCESS;
+ }
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support functions: set/get tally data --- */
+
+static void _cleanup( pam_handle_t *pamh, void *data, int error_status )
+ {
+ free(data);
+ }
+
+static void tally_set_data( pam_handle_t *pamh, time_t oldtime )
+ {
+ time_t *data;
+
+ if ( (data=malloc(sizeof(time_t))) != NULL ) {
+ *data = oldtime;
+ pam_set_data(pamh, MODULE_NAME, (void *)data, _cleanup);
+ }
+ }
+
+static int tally_get_data( pam_handle_t *pamh, time_t *oldtime )
+ {
+ int rv;
+ const void *data;
+
+ rv = pam_get_data(pamh, MODULE_NAME, &data);
+ if ( rv == PAM_SUCCESS && oldtime != NULL ) {
+ *oldtime = *(const time_t *)data;
+ pam_set_data(pamh, MODULE_NAME, NULL, NULL);
+ }
+ else {
+ rv = -1;
+ *oldtime = 0;
+ }
+ return rv;
+ }
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: open/create tallyfile and return tally for uid --- */
+
+/* If on entry *tally==TALLY_HI, tallyfile is opened READONLY */
+/* Otherwise, if on entry tallyfile doesn't exist, creation is attempted. */
+
+static int get_tally( tally_t *tally,
+ uid_t uid,
+ const char *filename,
+ FILE **TALLY,
+ struct fail_s *fsp)
+ {
+ struct stat fileinfo;
+ int lstat_ret = lstat(filename,&fileinfo);
+
+ if ( lstat_ret && *tally!=TALLY_HI ) {
+ int oldmask = umask(077);
+ *TALLY=fopen(filename, "a");
+ /* Create file, or append-open in pathological case. */
+ umask(oldmask);
+ if ( !*TALLY ) {
+ _pam_log(LOG_ALERT, "Couldn't create %s",filename);
+ return PAM_AUTH_ERR;
+ }
+ lstat_ret = fstat(fileno(*TALLY),&fileinfo);
+ fclose(*TALLY);
+ }
+
+ if ( lstat_ret ) {
+ _pam_log(LOG_ALERT, "Couldn't stat %s",filename);
+ return PAM_AUTH_ERR;
+ }
+
+ if((fileinfo.st_mode & S_IWOTH) || !S_ISREG(fileinfo.st_mode)) {
+ /* If the file is world writable or is not a
+ normal file, return error */
+ _pam_log(LOG_ALERT,
+ "%s is either world writable or not a normal file",
+ filename);
+ return PAM_AUTH_ERR;
+ }
+
+ if ( ! ( *TALLY = fopen(filename,(*tally!=TALLY_HI)?"r+":"r") ) ) {
+ _pam_log(LOG_ALERT, "Error opening %s for update", filename);
+
+/* Discovering why account service fails: e/uid are target user.
+ *
+ * perror(MODULE_NAME);
+ * fprintf(stderr,"uid %d euid %d\n",getuid(), geteuid());
+ */
+ return PAM_AUTH_ERR;
+ }
+
+ if ( fseek( *TALLY, uid * sizeof(struct faillog), SEEK_SET ) ) {
+ _pam_log(LOG_ALERT, "fseek failed %s", filename);
+ fclose(*TALLY);
+ return PAM_AUTH_ERR;
+ }
+
+ if ( fileinfo.st_size <= uid * sizeof(struct faillog) ) {
+
+ memset(fsp, 0, sizeof(struct faillog));
+ *tally=0;
+ fsp->fs_faillog.fail_time = time(NULL);
+
+ } else if (( fread((char *) &fsp->fs_faillog,
+ sizeof(struct faillog), 1, *TALLY) )==0 ) {
+
+ *tally=0; /* Assuming a gappy filesystem */
+
+ } else {
+
+ *tally = fsp->fs_faillog.fail_cnt;
+
+ }
+
+ return PAM_SUCCESS;
+ }
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: update and close tallyfile with tally!=TALLY_HI --- */
+
+static int set_tally( tally_t tally,
+ uid_t uid,
+ const char *filename,
+ FILE **TALLY,
+ struct fail_s *fsp)
+ {
+ if ( tally!=TALLY_HI )
+ {
+ if ( fseek( *TALLY, uid * sizeof(struct faillog), SEEK_SET ) ) {
+ _pam_log(LOG_ALERT, "fseek failed %s", filename);
+ return PAM_AUTH_ERR;
+ }
+ fsp->fs_faillog.fail_cnt = tally;
+ if (fwrite((char *) &fsp->fs_faillog,
+ sizeof(struct faillog), 1, *TALLY)==0 ) {
+ _pam_log(LOG_ALERT, "tally update (fwrite) failed.", filename);
+ return PAM_AUTH_ERR;
+ }
+ }
+
+ if ( fclose(*TALLY) ) {
+ _pam_log(LOG_ALERT, "tally update (fclose) failed.", filename);
+ return PAM_AUTH_ERR;
+ }
+ *TALLY=NULL;
+ return PAM_SUCCESS;
+ }
+
+/*---------------------------------------------------------------------*/
+
+/* --- PAM bits --- */
+
+#ifndef MAIN
+
+#define PAM_FUNCTION(name) \
+ PAM_EXTERN int name (pam_handle_t *pamh,int flags,int argc,const char **argv)
+
+#define RETURN_ERROR(i) return ((opts->ctrl & OPT_FAIL_ON_ERROR)?(i):(PAM_SUCCESS))
+
+/*---------------------------------------------------------------------*/
+
+/* --- tally bump function: bump tally for uid by (signed) inc --- */
+
+static int tally_bump (int inc, time_t *oldtime,
+ pam_handle_t *pamh,
+ uid_t uid,
+ const char *user,
+ struct tally_options *opts) {
+ tally_t
+ tally = 0; /* !TALLY_HI --> Log opened for update */
+
+ FILE
+ *TALLY = NULL;
+ const char
+ *remote_host = NULL,
+ *cur_tty = NULL;
+ struct fail_s fs, *fsp = &fs;
+ int i;
+
+ i=get_tally( &tally, uid, opts->filename, &TALLY, fsp );
+
+ /* to remember old fail time (for locktime) */
+ fsp->fs_fail_time = fsp->fs_faillog.fail_time;
+ if ( inc > 0 ) {
+ if ( oldtime ) {
+ *oldtime = fsp->fs_faillog.fail_time;
+ }
+ fsp->fs_faillog.fail_time = time(NULL);
+ } else {
+ if ( oldtime ) {
+ fsp->fs_faillog.fail_time = *oldtime;
+ }
+ }
+ (void) pam_get_item(pamh, PAM_RHOST, (const void **)&remote_host);
+ if (!remote_host) {
+
+ (void) pam_get_item(pamh, PAM_TTY, (const void **)&cur_tty);
+ if (!cur_tty) {
+ strncpy(fsp->fs_faillog.fail_line, "unknown",
+ sizeof(fsp->fs_faillog.fail_line) - 1);
+ fsp->fs_faillog.fail_line[sizeof(fsp->fs_faillog.fail_line)-1] = 0;
+ } else {
+ strncpy(fsp->fs_faillog.fail_line, cur_tty,
+ sizeof(fsp->fs_faillog.fail_line)-1);
+ fsp->fs_faillog.fail_line[sizeof(fsp->fs_faillog.fail_line)-1] = 0;
+ }
+
+ } else {
+ strncpy(fsp->fs_faillog.fail_line, remote_host,
+ (size_t)sizeof(fsp->fs_faillog.fail_line));
+ fsp->fs_faillog.fail_line[sizeof(fsp->fs_faillog.fail_line)-1] = 0;
+ }
+ if ( i != PAM_SUCCESS ) { if (TALLY) fclose(TALLY); RETURN_ERROR( i ); }
+
+ if ( !(opts->ctrl & OPT_MAGIC_ROOT) || getuid() ) { /* magic_root doesn't change tally */
+
+ tally+=inc;
+
+ if ( tally==TALLY_HI ) { /* Overflow *and* underflow. :) */
+ tally-=inc;
+ _pam_log(LOG_ALERT,"Tally %sflowed for user %s",
+ (inc<0)?"under":"over",user);
+ }
+ }
+
+ i=set_tally( tally, uid, opts->filename, &TALLY, fsp );
+ if ( i != PAM_SUCCESS ) { if (TALLY) fclose(TALLY); RETURN_ERROR( i ); }
+
+ return PAM_SUCCESS;
+}
+
+static int tally_check (time_t oldtime,
+ pam_handle_t *pamh,
+ uid_t uid,
+ const char *user,
+ struct tally_options *opts) {
+ tally_t
+ deny = opts->deny;
+ tally_t
+ tally = 0; /* !TALLY_HI --> Log opened for update */
+ long
+ lock_time = opts->lock_time;
+
+ struct fail_s fs, *fsp = &fs;
+ FILE *TALLY=0;
+ int i;
+
+ i=get_tally( &tally, uid, opts->filename, &TALLY, fsp );
+ if (TALLY) fclose(TALLY);
+ if ( i != PAM_SUCCESS ) { RETURN_ERROR( i ); }
+
+ if ( !(opts->ctrl & OPT_MAGIC_ROOT) || getuid() ) { /* magic_root skips tally check */
+
+ /* To deny or not to deny; that is the question */
+
+ /* if there's .fail_max entry and per_user=TRUE then deny=.fail_max */
+
+ if ( (fsp->fs_faillog.fail_max) && (opts->ctrl & OPT_PER_USER) ) {
+ deny = fsp->fs_faillog.fail_max;
+ }
+ if ( (fsp->fs_faillog.fail_locktime) && (opts->ctrl & OPT_PER_USER) ) {
+ lock_time = fsp->fs_faillog.fail_locktime;
+ }
+ if (lock_time && oldtime
+ && !(opts->ctrl & OPT_NO_LOCK_TIME) )
+ {
+ if ( lock_time + oldtime > time(NULL) )
+ {
+ _pam_log(LOG_NOTICE,
+ "user %s ("UID_FMT") has time limit [%lds left]"
+ " since last failure.",
+ user,uid,
+ oldtime+lock_time
+ -time(NULL));
+ return PAM_AUTH_ERR;
+ }
+ }
+ if (opts->unlock_time && oldtime)
+ {
+ if ( opts->unlock_time + oldtime <= time(NULL) )
+ { /* ignore deny check after unlock_time elapsed */
+ return PAM_SUCCESS;
+ }
+ }
+ if (
+ ( deny != 0 ) && /* deny==0 means no deny */
+ ( tally > deny ) && /* tally>deny means exceeded */
+ ( ((opts->ctrl & OPT_DENY_ROOT) || uid) ) /* even_deny stops uid check */
+ ) {
+ _pam_log(LOG_NOTICE,"user %s ("UID_FMT") tally "TALLY_FMT", deny "TALLY_FMT,
+ user, uid, tally, deny);
+ return PAM_AUTH_ERR; /* Only unconditional failure */
+ }
+ }
+
+ return PAM_SUCCESS;
+}
+
+static int tally_reset (pam_handle_t *pamh,
+ uid_t uid,
+ const char *user,
+ struct tally_options *opts) {
+ tally_t
+ tally = 0; /* !TALLY_HI --> Log opened for update */
+
+ struct fail_s fs, *fsp = &fs;
+ FILE *TALLY=0;
+ int i;
+
+ i=get_tally( &tally, uid, opts->filename, &TALLY, fsp );
+ if ( i != PAM_SUCCESS ) { if (TALLY) fclose(TALLY); RETURN_ERROR( i ); }
+
+ /* resets if not magic root
+ */
+
+ if ( (!(opts->ctrl & OPT_MAGIC_ROOT) || getuid())
+ && !(opts->ctrl & OPT_NO_RESET) )
+ { tally=0; }
+
+ if (tally == 0)
+ {
+ fsp->fs_faillog.fail_time = (time_t) 0;
+ strcpy(fsp->fs_faillog.fail_line, "");
+ }
+
+ i=set_tally( tally, uid, opts->filename, &TALLY, fsp );
+ if ( i != PAM_SUCCESS ) { if (TALLY) fclose(TALLY); RETURN_ERROR( i ); }
+
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- authentication management functions (only) --- */
+
+#ifdef PAM_SM_AUTH
+
+PAM_FUNCTION( pam_sm_authenticate ) {
+ int
+ rvcheck, rvbump;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rvcheck = tally_parse_args(opts, PHASE_AUTH, argc, argv);
+ if ( rvcheck != PAM_SUCCESS )
+ RETURN_ERROR( rvcheck );
+
+ rvcheck = pam_get_uid(pamh, &uid, &user, opts);
+ if ( rvcheck != PAM_SUCCESS )
+ RETURN_ERROR( rvcheck );
+
+ rvbump = tally_bump(1, &oldtime, pamh, uid, user, opts);
+ rvcheck = tally_check(oldtime, pamh, uid, user, opts);
+
+ tally_set_data(pamh, oldtime);
+
+ return rvcheck != PAM_SUCCESS ? rvcheck : rvbump;
+}
+
+PAM_FUNCTION( pam_sm_setcred ) {
+ int
+ rv;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rv = tally_parse_args(opts, PHASE_AUTH, argc, argv);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ rv = pam_get_uid(pamh, &uid, &user, opts);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ if ( tally_get_data(pamh, &oldtime) != 0 )
+ /* no data found */
+ return PAM_SUCCESS;
+
+ if ( (rv=tally_bump(-1, &oldtime, pamh, uid, user, opts)) != PAM_SUCCESS )
+ return rv;
+ return tally_reset(pamh, uid, user, opts);
+}
+
+#endif
+
+/*---------------------------------------------------------------------*/
+
+/* --- authentication management functions (only) --- */
+
+#ifdef PAM_SM_ACCOUNT
+
+/* To reset failcount of user on successfull login */
+
+PAM_FUNCTION( pam_sm_acct_mgmt ) {
+ int
+ rv;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rv = tally_parse_args(opts, PHASE_ACCOUNT, argc, argv);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ rv = pam_get_uid(pamh, &uid, &user, opts);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ if ( tally_get_data(pamh, &oldtime) != 0 )
+ /* no data found */
+ return PAM_SUCCESS;
+
+ if ( (rv=tally_bump(-1, &oldtime, pamh, uid, user, opts)) != PAM_SUCCESS )
+ return rv;
+ return tally_reset(pamh, uid, user, opts);
+}
+
+#endif /* #ifdef PAM_SM_ACCOUNT */
+
+/*-----------------------------------------------------------------------*/
+
+#ifdef PAM_STATIC
+
+/* static module data */
+
+struct pam_module _pam_tally_modstruct = {
+ MODULE_NAME,
+#ifdef PAM_SM_AUTH
+ pam_sm_authenticate,
+ pam_sm_setcred,
+#else
+ NULL,
+ NULL,
+#endif
+#ifdef PAM_SM_ACCOUNT
+ pam_sm_acct_mgmt,
+#else
+ NULL,
+#endif
+ NULL,
+ NULL,
+ NULL,
+};
+
+#endif /* #ifdef PAM_STATIC */
+
+/*-----------------------------------------------------------------------*/
+
+#else /* #ifndef MAIN */
+
+static const char *cline_filename = DEFAULT_LOGFILE;
+static tally_t cline_reset = TALLY_HI; /* Default is `interrogate only' */
+static int cline_quiet = 0;
+
+/*
+ * Not going to link with pamlib just for these.. :)
+ */
+
+static const char * pam_errors( int i ) {
+ switch (i) {
+ case PAM_AUTH_ERR: return "Authentication error";
+ case PAM_SERVICE_ERR: return "Service error";
+ case PAM_USER_UNKNOWN: return "Unknown user";
+ default: return "Unknown error";
+ }
+}
+
+static int getopts( int argc, char **argv ) {
+ const char *pname = *argv;
+ for ( ; *argv ; (void)(*argv && ++argv) ) {
+ if ( !strcmp (*argv,"--file") ) cline_filename=*++argv;
+ else if ( !strncmp(*argv,"--file=",7) ) cline_filename=*argv+7;
+ else if ( !strcmp (*argv,"--user") ) cline_user=*++argv;
+ else if ( !strncmp(*argv,"--user=",7) ) cline_user=*argv+7;
+ else if ( !strcmp (*argv,"--reset") ) cline_reset=0;
+ else if ( !strncmp(*argv,"--reset=",8)) {
+ if ( sscanf(*argv+8,TALLY_FMT,&cline_reset) != 1 )
+ fprintf(stderr,"%s: Bad number given to --reset=\n",pname), exit(0);
+ }
+ else if ( !strcmp (*argv,"--quiet") ) cline_quiet=1;
+ else {
+ fprintf(stderr,"%s: Unrecognised option %s\n",pname,*argv);
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+int main ( int argc, char **argv ) {
+
+ struct fail_s fs, *fsp = &fs;
+
+ if ( ! getopts( argc, argv+1 ) ) {
+ printf("%s: [--file rooted-filename] [--user username] "
+ "[--reset[=n]] [--quiet]\n",
+ *argv);
+ exit(0);
+ }
+
+ umask(077);
+
+ /*
+ * Major difference between individual user and all users:
+ * --user just handles one user, just like PAM.
+ * --user=* handles all users, sniffing cline_filename for nonzeros
+ */
+
+ if ( cline_user ) {
+ uid_t uid;
+ tally_t tally=cline_reset;
+ FILE *TALLY=0;
+ struct tally_options opts;
+ int i;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.ctrl = OPT_AUDIT;
+ i=pam_get_uid( NULL, &uid, NULL, &opts);
+ if ( i != PAM_SUCCESS ) {
+ fprintf(stderr,"%s: %s\n",*argv,pam_errors(i));
+ exit(0);
+ }
+
+ i=get_tally( &tally, uid, cline_filename, &TALLY, fsp );
+ if ( i != PAM_SUCCESS ) {
+ if (TALLY) fclose(TALLY);
+ fprintf(stderr,"%s: %s\n",*argv,pam_errors(i));
+ exit(0);
+ }
+
+ if ( !cline_quiet )
+ printf("User %s\t("UID_FMT")\t%s "TALLY_FMT"\n",cline_user,uid,
+ (cline_reset!=TALLY_HI)?"had":"has",tally);
+
+ i=set_tally( cline_reset, uid, cline_filename, &TALLY, fsp );
+ if ( i != PAM_SUCCESS ) {
+ if (TALLY) fclose(TALLY);
+ fprintf(stderr,"%s: %s\n",*argv,pam_errors(i));
+ exit(0);
+ }
+ }
+ else /* !cline_user (ie, operate on all users) */ {
+ FILE *TALLY=fopen(cline_filename, "r");
+ uid_t uid=0;
+ if ( !TALLY ) perror(*argv), exit(0);
+
+ for ( ; !feof(TALLY); uid++ ) {
+ tally_t tally;
+ struct passwd *pw;
+ if ( ! fread((char *) &fsp->fs_faillog,
+ sizeof (struct faillog), 1, TALLY)
+ || ! fsp->fs_faillog.fail_cnt ) {
+ continue;
+ }
+ tally = fsp->fs_faillog.fail_cnt;
+
+ if ( ( pw=getpwuid(uid) ) ) {
+ printf("User %s\t("UID_FMT")\t%s "TALLY_FMT"\n",pw->pw_name,uid,
+ (cline_reset!=TALLY_HI)?"had":"has",tally);
+ }
+ else {
+ printf("User [NONAME]\t("UID_FMT")\t%s "TALLY_FMT"\n",uid,
+ (cline_reset!=TALLY_HI)?"had":"has",tally);
+ }
+ }
+ fclose(TALLY);
+ if ( cline_reset!=0 && cline_reset!=TALLY_HI ) {
+ fprintf(stderr,"%s: Can't reset all users to non-zero\n",*argv);
+ }
+ else if ( !cline_reset ) {
+ TALLY=fopen(cline_filename, "w");
+ if ( !TALLY ) perror(*argv), exit(0);
+ fclose(TALLY);
+ }
+ }
+ return 0;
+}
+
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-26 21:59:22 +0000