diff options
Diffstat (limited to 'login.c')
-rw-r--r-- | login.c | 277 |
1 files changed, 19 insertions, 258 deletions
@@ -18,30 +18,9 @@ | |||
18 | */ | 18 | */ |
19 | 19 | ||
20 | #include "includes.h" | 20 | #include "includes.h" |
21 | RCSID("$Id: login.c,v 1.30 2000/05/31 03:57:19 damien Exp $"); | 21 | RCSID("$Id: login.c,v 1.31 2000/06/03 14:57:40 andre Exp $"); |
22 | 22 | ||
23 | #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX) | 23 | #include "loginrec.h" |
24 | # include <utmpx.h> | ||
25 | #endif | ||
26 | #ifdef HAVE_UTMP_H | ||
27 | # include <utmp.h> | ||
28 | #endif | ||
29 | #include "ssh.h" | ||
30 | |||
31 | #ifdef HAVE_UTIL_H | ||
32 | # include <util.h> | ||
33 | #endif | ||
34 | #ifdef HAVE_LASTLOG_H | ||
35 | # include <lastlog.h> | ||
36 | #endif | ||
37 | #ifdef HAVE_LOGIN_H | ||
38 | # include <login.h> | ||
39 | #endif | ||
40 | |||
41 | #ifdef WITH_AIXAUTHENTICATE | ||
42 | /* This is done in do_authentication */ | ||
43 | # define DISABLE_LASTLOG | ||
44 | #endif /* WITH_AIXAUTHENTICATE */ | ||
45 | 24 | ||
46 | /* | 25 | /* |
47 | * Returns the time when the user last logged in. Returns 0 if the | 26 | * Returns the time when the user last logged in. Returns 0 if the |
@@ -49,248 +28,32 @@ RCSID("$Id: login.c,v 1.30 2000/05/31 03:57:19 damien Exp $"); | |||
49 | * The host the user logged in from will be returned in buf. | 28 | * The host the user logged in from will be returned in buf. |
50 | */ | 29 | */ |
51 | 30 | ||
52 | /* | ||
53 | * Returns the time when the user last logged in (or 0 if no previous login | ||
54 | * is found). The name of the host used last time is returned in buf. | ||
55 | */ | ||
56 | |||
57 | unsigned long | 31 | unsigned long |
58 | get_last_login_time(uid_t uid, const char *logname, | 32 | get_last_login_time(uid_t uid, const char *logname, |
59 | char *buf, unsigned int bufsize) | 33 | char *buf, unsigned int bufsize) |
60 | { | 34 | { |
61 | #if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) | 35 | struct logininfo li; |
62 | struct lastlog ll; | ||
63 | int fd; | ||
64 | # ifdef LASTLOG_IS_DIR | ||
65 | char lbuf[1024]; | ||
66 | |||
67 | snprintf(lbuf, sizeof(buf), "%s/%s", _PATH_LASTLOG, logname); | ||
68 | if ((fd = open(lbuf, O_RDONLY)) < 0) | ||
69 | return 0; | ||
70 | # else /* LASTLOG_IS_DIR */ | ||
71 | buf[0] = '\0'; | ||
72 | |||
73 | if ((fd = open(_PATH_LASTLOG, O_RDONLY)) < 0) | ||
74 | return 0; | ||
75 | |||
76 | lseek(fd, (off_t) ((long) uid * sizeof(ll)), SEEK_SET); | ||
77 | # endif /* LASTLOG_IS_DIR */ | ||
78 | if (read(fd, &ll, sizeof(ll)) != sizeof(ll)) { | ||
79 | close(fd); | ||
80 | return 0; | ||
81 | } | ||
82 | |||
83 | close(fd); | ||
84 | |||
85 | if (bufsize > sizeof(ll.ll_host) + 1) | ||
86 | bufsize = sizeof(ll.ll_host) + 1; | ||
87 | strncpy(buf, ll.ll_host, bufsize - 1); | ||
88 | buf[bufsize - 1] = 0; | ||
89 | |||
90 | return ll.ll_time; | ||
91 | #else /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */ | ||
92 | # ifdef HAVE_TYPE_IN_UTMP | ||
93 | /* Look in wtmp for the last login */ | ||
94 | struct utmp wt; | ||
95 | int fd1; | ||
96 | unsigned long t = 0; | ||
97 | |||
98 | if ((fd1 = open(_PATH_WTMP, O_RDONLY)) < 0) { | ||
99 | error("Couldn't open %.100s to find last login time.", _PATH_WTMP); | ||
100 | return 0; | ||
101 | } | ||
102 | |||
103 | /* seek to last record of file */ | ||
104 | lseek(fd1, (off_t)(0 - sizeof(struct utmp)), SEEK_END); | ||
105 | |||
106 | /* loop through wtmp for our last user login record */ | ||
107 | do { | ||
108 | if (read(fd1, &wt, sizeof(wt)) != sizeof(wt)) { | ||
109 | close(fd1); | ||
110 | return 0; | ||
111 | } | ||
112 | |||
113 | if (wt.ut_type == USER_PROCESS) { | ||
114 | if (!strncmp(logname, wt.ut_user, 8)) { | ||
115 | t = (unsigned long)wt.ut_time; | ||
116 | # ifdef HAVE_HOST_IN_UTMP | ||
117 | if (bufsize > sizeof(wt.ut_host) + 1) | ||
118 | bufsize = sizeof(wt.ut_host) + 1; | ||
119 | strncpy(buf, wt.ut_host, bufsize - 1); | ||
120 | buf[bufsize - 1] = 0; | ||
121 | # else /* HAVE_HOST_IN_UTMP */ | ||
122 | buf[0] = 0; | ||
123 | # endif /* HAVE_HOST_IN_UTMP */ | ||
124 | } | ||
125 | } | ||
126 | 36 | ||
127 | if (lseek(fd1, (off_t)(0 - (2 * sizeof(struct utmp))), SEEK_CUR) < 0) | 37 | login_getlastentry_uid(&li, uid); |
128 | break; | 38 | strncpy(buf, li.hostname, bufsize); |
129 | } while (t == 0); | 39 | return li.tv_sec; |
130 | |||
131 | return t; | ||
132 | # else /* HAVE_TYPE_IN_UTMP */ | ||
133 | return 0; | ||
134 | # endif /* HAVE_TYPE_IN_UTMP */ | ||
135 | #endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */ | ||
136 | } | 40 | } |
137 | 41 | ||
138 | /* | 42 | /* |
139 | * Records that the user has logged in. I wish these parts of operating | 43 | * Records that the user has logged in. I these parts of operating systems |
140 | * systems were more standardized. | 44 | * were more standardized. |
141 | */ | 45 | */ |
46 | |||
142 | void | 47 | void |
143 | record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid, | 48 | record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid, |
144 | const char *host, struct sockaddr * addr) | 49 | const char *host, struct sockaddr * addr) |
145 | { | 50 | { |
146 | #if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) | 51 | struct logininfo *li; |
147 | struct lastlog ll; | ||
148 | # ifdef LASTLOG_IS_DIR | ||
149 | char buf[1024]; | ||
150 | # endif /* LASTLOG_IS_DIR */ | ||
151 | #endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */ | ||
152 | struct utmp u; | ||
153 | #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX) | ||
154 | struct utmpx utx; | ||
155 | #endif | ||
156 | |||
157 | /* Construct an utmp/wtmp entry. */ | ||
158 | memset(&u, 0, sizeof(u)); | ||
159 | strncpy(u.ut_line, ttyname + 5, sizeof(u.ut_line)); | ||
160 | |||
161 | #if defined(HAVE_ID_IN_UTMP) | ||
162 | # ifdef _AIX | ||
163 | strncpy(u.ut_id, ttyname + 5, sizeof(u.ut_id)); | ||
164 | # else /* !AIX */ | ||
165 | strncpy(u.ut_id, ttyname + 8, sizeof(u.ut_id)); | ||
166 | # endif | ||
167 | #endif /* defined(HAVE_ID_IN_UTMP) */ | ||
168 | |||
169 | strncpy(u.ut_name, user, sizeof(u.ut_name)); | ||
170 | |||
171 | #if defined(HAVE_TV_IN_UTMP) | ||
172 | (void)gettimeofday(&u.ut_tv, NULL); | ||
173 | #else /* defined(HAVE_TV_IN_UTMP) */ | ||
174 | u.ut_time = time(NULL); | ||
175 | #endif /* defined(HAVE_TV_IN_UTMP) */ | ||
176 | |||
177 | #if defined(HAVE_PID_IN_UTMP) | ||
178 | u.ut_pid = (pid_t)pid; | ||
179 | #endif /* HAVE_PID_IN_UTMP */ | ||
180 | |||
181 | #if defined(HAVE_TYPE_IN_UTMP) | ||
182 | u.ut_type = (uid == -1)?DEAD_PROCESS:USER_PROCESS; | ||
183 | #endif /* HAVE_TYPE_IN_UTMP */ | ||
184 | |||
185 | #if defined(HAVE_HOST_IN_UTMP) | ||
186 | strncpy(u.ut_host, host, sizeof(u.ut_host)); | ||
187 | #endif | ||
188 | |||
189 | #if defined(HAVE_ADDR_IN_UTMP) | ||
190 | if (addr) { | ||
191 | switch (addr->sa_family) { | ||
192 | case AF_INET: { | ||
193 | struct sockaddr_in *in = (struct sockaddr_in*)addr; | ||
194 | memcpy(&(u.ut_addr), &(in->sin_addr), sizeof(&(in->sin_addr))); | ||
195 | break; | ||
196 | } | ||
197 | # if defined(HAVE_ADDR_V6_IN_UTMP) | ||
198 | case AF_INET6: { | ||
199 | struct sockaddr_in6 *in6 = (struct sockaddr_in6*)addr; | ||
200 | memcpy(u.ut_addr_v6, &(in6->sin6_addr), sizeof(&(in6->sin6_addr))); | ||
201 | break; | ||
202 | } | ||
203 | # endif /* defined(HAVE_ADDR_V6_IN_UTMP) */ | ||
204 | default: | ||
205 | break; | ||
206 | } | ||
207 | } | ||
208 | #endif /* defined(HAVE_ADDR_IN_UTMP) */ | ||
209 | 52 | ||
210 | #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX) | 53 | li = login_alloc_entry(pid, user, host, ttyname); |
211 | memset(&utx, 0, sizeof(utx)); | 54 | login_set_ip4(li, (struct sockaddr_in *)addr); |
212 | 55 | login_login(li); | |
213 | strncpy(utx.ut_user, user, sizeof(utx.ut_name)); | 56 | login_free_entry(li); |
214 | strncpy(utx.ut_line, ttyname + 5, sizeof(utx.ut_line)); | ||
215 | strncpy(utx.ut_id, ttyname + 8, sizeof(utx.ut_id)); | ||
216 | |||
217 | utx.ut_pid = (pid_t)pid; | ||
218 | (void)gettimeofday(&utx.ut_tv, NULL); | ||
219 | |||
220 | utx.ut_type = (uid == -1)?DEAD_PROCESS:USER_PROCESS; | ||
221 | # ifdef HAVE_HOST_IN_UTMPX | ||
222 | # ifdef HAVE_SYSLEN_IN_UTMPX | ||
223 | utx.ut_syslen = strlen(host); | ||
224 | if (utx.ut_syslen + 1 > sizeof(utx.ut_host)) | ||
225 | utx.ut_syslen = sizeof(utx.ut_host); | ||
226 | strncpy(utx.ut_host, host, utx.ut_syslen); | ||
227 | # else | ||
228 | strncpy(utx.ut_host, host, sizeof(utx.ut_host)); | ||
229 | # endif /* HAVE_SYSLEN_IN_UTMPX */ | ||
230 | utx.ut_host[sizeof(utx.ut_host)-1] = '\0'; | ||
231 | # endif | ||
232 | |||
233 | # if defined(HAVE_ADDR_IN_UTMPX) | ||
234 | if (addr) { | ||
235 | switch (addr->sa_family) { | ||
236 | case AF_INET: { | ||
237 | struct sockaddr_in *in = (struct sockaddr_in*)addr; | ||
238 | memcpy(&(utx.ut_addr), &(in->sin_addr), sizeof(&(in->sin_addr))); | ||
239 | break; | ||
240 | } | ||
241 | # if defined(HAVE_ADDR_V6_IN_UTMPX) | ||
242 | case AF_INET6: { | ||
243 | struct sockaddr_in6 *in6 = (struct sockaddr_in6*)addr; | ||
244 | memcpy(utx.ut_addr_v6, &(in6->sin6_addr), sizeof(&(in6->sin6_addr))); | ||
245 | break; | ||
246 | } | ||
247 | # endif /* defined(HAVE_ADDR_V6_IN_UTMPX) */ | ||
248 | default: | ||
249 | break; | ||
250 | } | ||
251 | } | ||
252 | # endif /* defined(HAVE_ADDR_IN_UTMPX) */ | ||
253 | #endif /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */ | ||
254 | |||
255 | #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX) | ||
256 | login(&utx); | ||
257 | #else /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */ | ||
258 | login(&u); | ||
259 | #endif /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */ | ||
260 | |||
261 | #if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) | ||
262 | /* Update lastlog unless actually recording a logout. */ | ||
263 | if (strcmp(user, "") != 0) { | ||
264 | int fd; | ||
265 | /* | ||
266 | * It is safer to bzero the lastlog structure first because | ||
267 | * some systems might have some extra fields in it (e.g. SGI) | ||
268 | */ | ||
269 | memset(&ll, 0, sizeof(ll)); | ||
270 | |||
271 | /* Update lastlog. */ | ||
272 | ll.ll_time = time(NULL); | ||
273 | strncpy(ll.ll_line, ttyname + 5, sizeof(ll.ll_line)); | ||
274 | strncpy(ll.ll_host, host, sizeof(ll.ll_host)); | ||
275 | # ifdef LASTLOG_IS_DIR | ||
276 | snprintf(buf, sizeof(buf), "%s/%s", _PATH_LASTLOG, user); | ||
277 | if ((fd = open(buf, O_RDWR)) >= 0) { | ||
278 | if (write(fd, &ll, sizeof(ll)) != sizeof(ll)) | ||
279 | log("Could not write %.100s: %.100s", buf, strerror(errno)); | ||
280 | close(fd); | ||
281 | } | ||
282 | # else /* LASTLOG_IS_DIR */ | ||
283 | if ((fd = open(_PATH_LASTLOG, O_RDWR)) >= 0) { | ||
284 | lseek(fd, (off_t) ((long) uid * sizeof(ll)), SEEK_SET); | ||
285 | if (write(fd, &ll, sizeof(ll)) != sizeof(ll)) { | ||
286 | log("Could not write %.100s: %.100s", _PATH_LASTLOG, | ||
287 | strerror(errno)); | ||
288 | } | ||
289 | close(fd); | ||
290 | } | ||
291 | # endif /* LASTLOG_IS_DIR */ | ||
292 | } | ||
293 | #endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */ | ||
294 | } | 57 | } |
295 | 58 | ||
296 | /* Records that the user has logged out. */ | 59 | /* Records that the user has logged out. */ |
@@ -298,11 +61,9 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid, | |||
298 | void | 61 | void |
299 | record_logout(pid_t pid, const char *ttyname) | 62 | record_logout(pid_t pid, const char *ttyname) |
300 | { | 63 | { |
301 | #ifdef HAVE_LIBUTIL_LOGIN | 64 | struct logininfo *li; |
302 | const char *line = ttyname + 5; /* /dev/ttyq8 -> ttyq8 */ | 65 | |
303 | if (logout(line)) | 66 | li = login_alloc_entry(pid, NULL, NULL, ttyname); |
304 | logwtmp(line, "", ""); | 67 | login_logout(li); |
305 | #else /* HAVE_LIBUTIL_LOGIN */ | 68 | login_free_entry(li); |
306 | record_login(pid, ttyname, "", -1, "", NULL); | ||
307 | #endif /* HAVE_LIBUTIL_LOGIN */ | ||
308 | } | 69 | } |