logintest.c

   1 /*
   2  * Copyright (c) 2000 Andre Lucas.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 /**
  26  ** logintest.c:  simple test driver for platform-independent login recording
  27  **               and lastlog retrieval
  28  **/
  29
  30 #include "includes.h"
  31
  32 #include <sys/types.h>
  33 #include <sys/wait.h>
  34 #include <sys/socket.h>
  35
  36 #include <netinet/in.h>
  37
  38 #include <unistd.h>
  39 #include <stdlib.h>
  40 #include <stdio.h>
  41 #include <string.h>
  42 #include <pwd.h>
  43 #if defined(HAVE_NETDB_H)
  44 # include <netdb.h>
  45 #endif
  46 #ifdef HAVE_TIME_H
  47 #include <time.h>
  48 #endif
  49
  50 #include "loginrec.h"
  51
  52 extern char *__progname;
  53
  54 #define PAUSE_BEFORE_LOGOUT 3
  55
  56 int nologtest = 0;
  57 int compile_opts_only = 0;
  58 int be_verbose = 0;
  59
  60
  61 /* Dump a logininfo to stdout. Assumes a tab size of 8 chars. */
  62 void
  63 dump_logininfo(struct logininfo *li, char *descname)
  64 {
  65         /* yes I know how nasty this is */
  66         printf("struct logininfo %s = {\n\t"
  67                "progname\t'%s'\n\ttype\t\t%d\n\t"
  68                "pid\t\t%d\n\tuid\t\t%d\n\t"
  69                "line\t\t'%s'\n\tusername\t'%s'\n\t"
  70                "hostname\t'%s'\n\texit\t\t%d\n\ttermination\t%d\n\t"
  71                "tv_sec\t%d\n\ttv_usec\t%d\n\t"
  72                "struct login_netinfo hostaddr {\n\t\t"
  73                "struct sockaddr sa {\n"
  74                "\t\t\tfamily\t%d\n\t\t}\n"
  75                "\t}\n"
  76                "}\n",
  77                descname, li->progname, li->type,
  78                li->pid, li->uid, li->line,
  79                li->username, li->hostname, li->exit,
  80                li->termination, li->tv_sec, li->tv_usec,
  81                li->hostaddr.sa.sa_family);
  82 }
  83
  84
  85 int
  86 testAPI()
  87 {
  88         struct logininfo *li1;
  89         struct passwd *pw;
  90         struct hostent *he;
  91         struct sockaddr_in sa_in4;
  92         char cmdstring[256], stripline[8];
  93         char username[32];
  94 #ifdef HAVE_TIME_H
  95         time_t t0, t1, t2, logintime, logouttime;
  96         char s_t0[64],s_t1[64],s_t2[64];
  97         char s_logintime[64], s_logouttime[64]; /* ctime() strings */
  98 #endif
  99
 100         printf("**\n** Testing the API...\n**\n");
 101
 102         pw = getpwuid(getuid());
 103         strlcpy(username, pw->pw_name, sizeof(username));
 104
 105         /* gethostname(hostname, sizeof(hostname)); */
 106
 107         printf("login_alloc_entry test (no host info):\n");
 108
 109         /* FIXME fake tty more effectively - this could upset some platforms */
 110         li1 = login_alloc_entry((int)getpid(), username, NULL, ttyname(0));
 111         strlcpy(li1->progname, "OpenSSH-logintest", sizeof(li1->progname));
 112
 113         if (be_verbose)
 114                 dump_logininfo(li1, "li1");
 115
 116         printf("Setting host address info for 'localhost' (may call out):\n");
 117         if (! (he = gethostbyname("localhost"))) {
 118                 printf("Couldn't set hostname(lookup failed)\n");
 119         } else {
 120                 /* NOTE: this is messy, but typically a program wouldn't have to set
 121                  *  any of this, a sockaddr_in* would be already prepared */
 122                 memcpy((void *)&(sa_in4.sin_addr), (void *)&(he->h_addr_list[0][0]),
 123                        sizeof(struct in_addr));
 124                 login_set_addr(li1, (struct sockaddr *) &sa_in4, sizeof(sa_in4));
 125                 strlcpy(li1->hostname, "localhost", sizeof(li1->hostname));
 126         }
 127         if (be_verbose)
 128                 dump_logininfo(li1, "li1");
 129
 130         if ((int)geteuid() != 0) {
 131                 printf("NOT RUNNING LOGIN TESTS - you are not root!\n");
 132                 return 1;
 133         }
 134
 135         if (nologtest)
 136                 return 1;
 137
 138         line_stripname(stripline, li1->line, sizeof(stripline));
 139
 140         printf("Performing an invalid login attempt (no type field)\n--\n");
 141         login_write(li1);
 142         printf("--\n(Should have written errors to stderr)\n");
 143
 144 #ifdef HAVE_TIME_H
 145         (void)time(&t0);
 146         strlcpy(s_t0, ctime(&t0), sizeof(s_t0));
 147         t1 = login_get_lastlog_time(getuid());
 148         strlcpy(s_t1, ctime(&t1), sizeof(s_t1));
 149         printf("Before logging in:\n\tcurrent time is %d - %s\t"
 150                "lastlog time is %d - %s\n",
 151                (int)t0, s_t0, (int)t1, s_t1);
 152 #endif
 153
 154         printf("Performing a login on line %s ", stripline);
 155 #ifdef HAVE_TIME_H
 156         (void)time(&logintime);
 157         strlcpy(s_logintime, ctime(&logintime), sizeof(s_logintime));
 158         printf("at %d - %s", (int)logintime, s_logintime);
 159 #endif
 160         printf("--\n");
 161         login_login(li1);
 162
 163         snprintf(cmdstring, sizeof(cmdstring), "who | grep '%s '",
 164                  stripline);
 165         system(cmdstring);
 166
 167         printf("--\nPausing for %d second(s)...\n", PAUSE_BEFORE_LOGOUT);
 168         sleep(PAUSE_BEFORE_LOGOUT);
 169
 170         printf("Performing a logout ");
 171 #ifdef HAVE_TIME_H
 172         (void)time(&logouttime);
 173         strlcpy(s_logouttime, ctime(&logouttime), sizeof(s_logouttime));
 174         printf("at %d - %s", (int)logouttime, s_logouttime);
 175 #endif
 176         printf("\nThe root login shown above should be gone.\n"
 177                "If the root login hasn't gone, but another user on the same\n"
 178                "pty has, this is OK - we're hacking it here, and there\n"
 179                "shouldn't be two users on one pty in reality...\n"
 180                "-- ('who' output follows)\n");
 181         login_logout(li1);
 182
 183         system(cmdstring);
 184         printf("-- ('who' output ends)\n");
 185
 186 #ifdef HAVE_TIME_H
 187         t2 = login_get_lastlog_time(getuid());
 188         strlcpy(s_t2, ctime(&t2), sizeof(s_t2));
 189         printf("After logging in, lastlog time is %d - %s\n", (int)t2, s_t2);
 190         if (t1 == t2)
 191                 printf("The lastlog times before and after logging in are the "
 192                        "same.\nThis indicates that lastlog is ** NOT WORKING "
 193                        "CORRECTLY **\n");
 194         else if (t0 != t2)
 195                 /* We can be off by a second or so, even when recording works fine.
 196                  * I'm not 100% sure why, but it's true. */
 197                 printf("** The login time and the lastlog time differ.\n"
 198                        "** This indicates that lastlog is either recording the "
 199                        "wrong time,\n** or retrieving the wrong entry.\n"
 200                        "If it's off by less than %d second(s) "
 201                        "run the test again.\n", PAUSE_BEFORE_LOGOUT);
 202         else
 203                 printf("lastlog agrees with the login time. This is a good thing.\n");
 204
 205 #endif
 206
 207         printf("--\nThe output of 'last' shown next should have "
 208                "an entry for root \n  on %s for the time shown above:\n--\n",
 209                stripline);
 210         snprintf(cmdstring, sizeof(cmdstring), "last | grep '%s ' | head -3",
 211                  stripline);
 212         system(cmdstring);
 213
 214         printf("--\nEnd of login test.\n");
 215
 216         login_free_entry(li1);
 217
 218         return 1;
 219 } /* testAPI() */
 220
 221
 222 void
 223 testLineName(char *line)
 224 {
 225         /* have to null-terminate - these functions are designed for
 226          * structures with fixed-length char arrays, and don't null-term.*/
 227         char full[17], strip[9], abbrev[5];
 228
 229         memset(full, '\0', sizeof(full));
 230         memset(strip, '\0', sizeof(strip));
 231         memset(abbrev, '\0', sizeof(abbrev));
 232
 233         line_fullname(full, line, sizeof(full)-1);
 234         line_stripname(strip, full, sizeof(strip)-1);
 235         line_abbrevname(abbrev, full, sizeof(abbrev)-1);
 236         printf("%s: %s, %s, %s\n", line, full, strip, abbrev);
 237
 238 } /* testLineName() */
 239
 240
 241 int
 242 testOutput()
 243 {
 244         printf("**\n** Testing linename functions\n**\n");
 245         testLineName("/dev/pts/1");
 246         testLineName("pts/1");
 247         testLineName("pts/999");
 248         testLineName("/dev/ttyp00");
 249         testLineName("ttyp00");
 250
 251         return 1;
 252 } /* testOutput() */
 253
 254
 255 /* show which options got compiled in */
 256 void
 257 showOptions(void)
 258 {
 259         printf("**\n** Compile-time options\n**\n");
 260
 261         printf("login recording methods selected:\n");
 262 #ifdef USE_LOGIN
 263         printf("\tUSE_LOGIN\n");
 264 #endif
 265 #ifdef USE_UTMP
 266         printf("\tUSE_UTMP (UTMP_FILE=%s)\n", UTMP_FILE);
 267 #endif
 268 #ifdef USE_UTMPX
 269         printf("\tUSE_UTMPX (UTMPX_FILE=%s)\n", UTMPX_FILE);
 270 #endif
 271 #ifdef USE_WTMP
 272         printf("\tUSE_WTMP (WTMP_FILE=%s)\n", WTMP_FILE);
 273 #endif
 274 #ifdef USE_WTMPX
 275         printf("\tUSE_WTMPX (WTMPX_FILE=%s)\n", WTMPX_FILE);
 276 #endif
 277 #ifdef USE_LASTLOG
 278         printf("\tUSE_LASTLOG (LASTLOG_FILE=%s)\n", LASTLOG_FILE);
 279 #endif
 280         printf("\n");
 281
 282 } /* showOptions() */
 283
 284
 285 int
 286 main(int argc, char *argv[])
 287 {
 288         printf("Platform-independent login recording test driver\n");
 289
 290         __progname = ssh_get_progname(argv[0]);
 291         if (argc == 2) {
 292                 if (strncmp(argv[1], "-i", 3) == 0)
 293                         compile_opts_only = 1;
 294                 else if (strncmp(argv[1], "-v", 3) == 0)
 295                         be_verbose=1;
 296         }
 297
 298         if (!compile_opts_only) {
 299                 if (be_verbose && !testOutput())
 300                         return 1;
 301
 302                 if (!testAPI())
 303                         return 1;
 304         }
 305
 306         showOptions();
 307
 308         return 0;
 309 } /* main() */
 310