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-rw-r--r--modules/pam_faillock/main.c231
1 files changed, 231 insertions, 0 deletions
diff --git a/modules/pam_faillock/main.c b/modules/pam_faillock/main.c
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+++ b/modules/pam_faillock/main.c
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+/*
+ * Copyright (c) 2010 Tomas Mraz <tmraz@redhat.com>
+ * Copyright (c) 2010 Red Hat, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <errno.h>
+#include <pwd.h>
+#include <time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#ifdef HAVE_LIBAUDIT
+#include <libaudit.h>
+
+#define AUDIT_NO_ID ((unsigned int) -1)
+#endif
+
+#include "faillock.h"
+
+struct options {
+ unsigned int reset;
+ const char *dir;
+ const char *user;
+ const char *progname;
+};
+
+static int
+args_parse(int argc, char **argv, struct options *opts)
+{
+ int i;
+ memset(opts, 0, sizeof(*opts));
+
+ opts->dir = FAILLOCK_DEFAULT_TALLYDIR;
+ opts->progname = argv[0];
+
+ for (i = 1; i < argc; ++i) {
+ if (strcmp(argv[i], "--dir") == 0) {
+ ++i;
+ if (i >= argc || strlen(argv[i]) == 0) {
+ fprintf(stderr, "%s: No directory supplied.\n", argv[0]);
+ return -1;
+ }
+ opts->dir = argv[i];
+ }
+ else if (strcmp(argv[i], "--user") == 0) {
+ ++i;
+ if (i >= argc || strlen(argv[i]) == 0) {
+ fprintf(stderr, "%s: No user name supplied.\n", argv[0]);
+ return -1;
+ }
+ opts->user = argv[i];
+ }
+ else if (strcmp(argv[i], "--reset") == 0) {
+ opts->reset = 1;
+ }
+ else {
+ fprintf(stderr, "%s: Unknown option: %s\n", argv[0], argv[i]);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static void
+usage(const char *progname)
+{
+ fprintf(stderr, _("Usage: %s [--dir /path/to/tally-directory] [--user username] [--reset]\n"),
+ progname);
+}
+
+static int
+do_user(struct options *opts, const char *user)
+{
+ int fd;
+ int rv;
+ struct tally_data tallies;
+ struct passwd *pwd;
+
+ pwd = getpwnam(user);
+
+ fd = open_tally(opts->dir, user, pwd != NULL ? pwd->pw_uid : 0, 0);
+
+ if (fd == -1) {
+ if (errno == ENOENT) {
+ return 0;
+ }
+ else {
+ fprintf(stderr, "%s: Error opening the tally file for %s:",
+ opts->progname, user);
+ perror(NULL);
+ return 3;
+ }
+ }
+ if (opts->reset) {
+#ifdef HAVE_LIBAUDIT
+ int audit_fd;
+#endif
+
+ while ((rv=ftruncate(fd, 0)) == -1 && errno == EINTR);
+ if (rv == -1) {
+ fprintf(stderr, "%s: Error clearing the tally file for %s:",
+ opts->progname, user);
+ perror(NULL);
+#ifdef HAVE_LIBAUDIT
+ }
+ if ((audit_fd=audit_open()) >= 0) {
+ audit_log_acct_message(audit_fd, AUDIT_USER_MGMT, NULL,
+ "faillock-reset", user,
+ pwd != NULL ? pwd->pw_uid : AUDIT_NO_ID,
+ NULL, NULL, NULL, rv == 0);
+ close(audit_fd);
+ }
+ if (rv == -1) {
+#endif
+ close(fd);
+ return 4;
+ }
+ }
+ else {
+ unsigned int i;
+
+ memset(&tallies, 0, sizeof(tallies));
+ if (read_tally(fd, &tallies) == -1) {
+ fprintf(stderr, "%s: Error reading the tally file for %s:",
+ opts->progname, user);
+ perror(NULL);
+ close(fd);
+ return 5;
+ }
+
+ printf("%s:\n", user);
+ printf("%-19s %-5s %-48s %-5s\n", "When", "Type", "Source", "Valid");
+
+ for (i = 0; i < tallies.count; i++) {
+ struct tm *tm;
+ char timebuf[80];
+ uint16_t status = tallies.records[i].status;
+ time_t when = tallies.records[i].time;
+
+ tm = localtime(&when);
+ strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm);
+ printf("%-19s %-5s %-52.52s %s\n", timebuf,
+ status & TALLY_STATUS_RHOST ? "RHOST" : (status & TALLY_STATUS_TTY ? "TTY" : "SVC"),
+ tallies.records[i].source, status & TALLY_STATUS_VALID ? "V":"I");
+ }
+ free(tallies.records);
+ }
+ close(fd);
+ return 0;
+}
+
+static int
+do_allusers(struct options *opts)
+{
+ struct dirent **userlist;
+ int rv, i;
+
+ rv = scandir(opts->dir, &userlist, NULL, alphasort);
+ if (rv < 0) {
+ fprintf(stderr, "%s: Error reading tally directory: %m\n", opts->progname);
+ return 2;
+ }
+
+ for (i = 0; i < rv; i++) {
+ if (userlist[i]->d_name[0] == '.') {
+ if ((userlist[i]->d_name[1] == '.' && userlist[i]->d_name[2] == '\0') ||
+ userlist[i]->d_name[1] == '\0')
+ continue;
+ }
+ do_user(opts, userlist[i]->d_name);
+ free(userlist[i]);
+ }
+ free(userlist);
+
+ return 0;
+}
+
+
+/*-----------------------------------------------------------------------*/
+int
+main (int argc, char *argv[])
+{
+ struct options opts;
+
+ if (args_parse(argc, argv, &opts)) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ if (opts.user == NULL) {
+ return do_allusers(&opts);
+ }
+
+ return do_user(&opts, opts.user);
+}