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author | 2016-03-04 09:53:09 -0500 | |
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committer | 2016-03-04 09:53:09 -0500 | |
commit | cb95853d2817e8e6251321c28b4f5f0f35b836a1 (patch) | |
tree | 38d5b6d3ff9ec241e56aa82fb1a5d8ee38510dcf /src | |
parent | cleanup (diff) | |
download | firejail-cb95853d2817e8e6251321c28b4f5f0f35b836a1.tar.gz firejail-cb95853d2817e8e6251321c28b4f5f0f35b836a1.tar.zst firejail-cb95853d2817e8e6251321c28b4f5f0f35b836a1.zip |
--ls
Diffstat (limited to 'src')
-rw-r--r-- | src/firejail/firejail.h | 4 | ||||
-rw-r--r-- | src/firejail/fs_logger.c | 8 | ||||
-rw-r--r-- | src/firejail/ls.c | 307 | ||||
-rw-r--r-- | src/firejail/main.c | 23 | ||||
-rw-r--r-- | src/firejail/util.c | 1 | ||||
-rw-r--r-- | src/lib/pid.c | 5 |
6 files changed, 342 insertions, 6 deletions
diff --git a/src/firejail/firejail.h b/src/firejail/firejail.h index 87db4d08e..b526b5e00 100644 --- a/src/firejail/firejail.h +++ b/src/firejail/firejail.h | |||
@@ -530,5 +530,9 @@ int x11_display(void); | |||
530 | // return 1 if xpra is installed on the system | 530 | // return 1 if xpra is installed on the system |
531 | int x11_check_xpra(void); | 531 | int x11_check_xpra(void); |
532 | 532 | ||
533 | // ls.c | ||
534 | void ls_name(const char *name, const char *path); | ||
535 | void ls(pid_t pid, const char *path); | ||
536 | |||
533 | #endif | 537 | #endif |
534 | 538 | ||
diff --git a/src/firejail/fs_logger.c b/src/firejail/fs_logger.c index 058bcc1c9..227a66cd7 100644 --- a/src/firejail/fs_logger.c +++ b/src/firejail/fs_logger.c | |||
@@ -157,27 +157,27 @@ void fs_logger_print_log(pid_t pid) { | |||
157 | if (uid != 0) { | 157 | if (uid != 0) { |
158 | uid_t sandbox_uid = pid_get_uid(pid); | 158 | uid_t sandbox_uid = pid_get_uid(pid); |
159 | if (uid != sandbox_uid) { | 159 | if (uid != sandbox_uid) { |
160 | fprintf(stderr, "Error: permission denied.\n"); | 160 | fprintf(stderr, "Error: permission denied\n"); |
161 | exit(1); | 161 | exit(1); |
162 | } | 162 | } |
163 | } | 163 | } |
164 | 164 | ||
165 | // print RUN_FSLOGGER_FILE | 165 | // print RUN_FSLOGGER_FILE |
166 | EUID_ROOT(); | ||
167 | char *fname; | 166 | char *fname; |
168 | if (asprintf(&fname, "/proc/%d/root%s", pid, RUN_FSLOGGER_FILE) == -1) | 167 | if (asprintf(&fname, "/proc/%d/root%s", pid, RUN_FSLOGGER_FILE) == -1) |
169 | errExit("asprintf"); | 168 | errExit("asprintf"); |
170 | 169 | ||
170 | EUID_ROOT(); | ||
171 | struct stat s; | 171 | struct stat s; |
172 | if (stat(fname, &s) == -1) { | 172 | if (stat(fname, &s) == -1) { |
173 | printf("Cannot access filesystem log.\n"); | 173 | fprintf(stderr, "Error: Cannot access filesystem log\n"); |
174 | exit(1); | 174 | exit(1); |
175 | } | 175 | } |
176 | 176 | ||
177 | /* coverity[toctou] */ | 177 | /* coverity[toctou] */ |
178 | FILE *fp = fopen(fname, "r"); | 178 | FILE *fp = fopen(fname, "r"); |
179 | if (!fp) { | 179 | if (!fp) { |
180 | printf("Cannot open filesystem log.\n"); | 180 | fprintf(stderr, "Error: Cannot open filesystem log\n"); |
181 | exit(1); | 181 | exit(1); |
182 | } | 182 | } |
183 | 183 | ||
diff --git a/src/firejail/ls.c b/src/firejail/ls.c new file mode 100644 index 000000000..bd4a4e347 --- /dev/null +++ b/src/firejail/ls.c | |||
@@ -0,0 +1,307 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2014-2016 Firejail Authors | ||
3 | * | ||
4 | * This file is part of firejail project | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License along | ||
17 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
19 | */ | ||
20 | |||
21 | #include "firejail.h" | ||
22 | #include <sys/types.h> | ||
23 | #include <sys/stat.h> | ||
24 | #include <unistd.h> | ||
25 | #include <dirent.h> | ||
26 | #include <pwd.h> | ||
27 | #include <grp.h> | ||
28 | |||
29 | // uid/gid cache | ||
30 | static uid_t c_uid = 0; | ||
31 | static char *c_uid_name = NULL; | ||
32 | static gid_t c_gid = 0; | ||
33 | static char *g_uid_name = NULL; | ||
34 | |||
35 | static void print_file_or_dir(const char *path, const char *fname, int separator) { | ||
36 | assert(fname); | ||
37 | |||
38 | char *name; | ||
39 | if (separator) { | ||
40 | if (asprintf(&name, "%s/%s", path, fname) == -1) | ||
41 | errExit("asprintf"); | ||
42 | } | ||
43 | else { | ||
44 | if (asprintf(&name, "%s%s", path, fname) == -1) | ||
45 | errExit("asprintf"); | ||
46 | } | ||
47 | |||
48 | struct stat s; | ||
49 | int is_broken_link = 0; | ||
50 | if (stat(name, &s) == -1) { | ||
51 | is_broken_link = 1; | ||
52 | if (lstat(name, &s) == -1) { | ||
53 | printf("Error: cannot access %s\n", name); | ||
54 | return; | ||
55 | } | ||
56 | } | ||
57 | |||
58 | // permissions | ||
59 | if (S_ISLNK(s.st_mode)) | ||
60 | printf("l"); | ||
61 | else if (S_ISDIR(s.st_mode)) | ||
62 | printf("d"); | ||
63 | else if (S_ISCHR(s.st_mode)) | ||
64 | printf("c"); | ||
65 | else if (S_ISBLK(s.st_mode)) | ||
66 | printf("b"); | ||
67 | else if (S_ISSOCK(s.st_mode)) | ||
68 | printf("s"); | ||
69 | else | ||
70 | printf("-"); | ||
71 | printf( (s.st_mode & S_IRUSR) ? "r" : "-"); | ||
72 | printf( (s.st_mode & S_IWUSR) ? "w" : "-"); | ||
73 | printf( (s.st_mode & S_IXUSR) ? "x" : "-"); | ||
74 | printf( (s.st_mode & S_IRGRP) ? "r" : "-"); | ||
75 | printf( (s.st_mode & S_IWGRP) ? "w" : "-"); | ||
76 | printf( (s.st_mode & S_IXGRP) ? "x" : "-"); | ||
77 | printf( (s.st_mode & S_IROTH) ? "r" : "-"); | ||
78 | printf( (s.st_mode & S_IWOTH) ? "w" : "-"); | ||
79 | printf( (s.st_mode & S_IXOTH) ? "x" : "-"); | ||
80 | printf(" "); | ||
81 | |||
82 | // user name | ||
83 | char *username; | ||
84 | int allocated = 0; | ||
85 | if (s.st_uid == 0) | ||
86 | username = "root"; | ||
87 | else if (s.st_uid == c_uid) { | ||
88 | assert(c_uid_name); | ||
89 | username = c_uid_name; | ||
90 | } | ||
91 | else { | ||
92 | struct passwd *pw = getpwuid(s.st_uid); | ||
93 | allocated = 1; | ||
94 | if (!pw) { | ||
95 | if (asprintf(&username, "%d", s.st_uid) == -1) | ||
96 | errExit("asprintf"); | ||
97 | } | ||
98 | else { | ||
99 | username = strdup(pw->pw_name); | ||
100 | if (!username) | ||
101 | errExit("asprintf"); | ||
102 | } | ||
103 | |||
104 | if (c_uid == 0) { | ||
105 | c_uid = s.st_uid; | ||
106 | c_uid_name = strdup(username); | ||
107 | if (!c_uid_name) | ||
108 | errExit("asprintf"); | ||
109 | } | ||
110 | } | ||
111 | |||
112 | // print user name, 8 chars maximum | ||
113 | int len = strlen(username); | ||
114 | if (len > 8) { | ||
115 | username[8] = '\0'; | ||
116 | len = 8; | ||
117 | } | ||
118 | printf("%s ", username); | ||
119 | int i; | ||
120 | for (i = len; i < 8; i++) | ||
121 | printf(" "); | ||
122 | if (allocated) | ||
123 | free(username); | ||
124 | |||
125 | |||
126 | // group name | ||
127 | char *groupname; | ||
128 | allocated = 0; | ||
129 | if (s.st_uid == 0) | ||
130 | groupname = "root"; | ||
131 | else { | ||
132 | struct group *g = getgrgid(s.st_gid); | ||
133 | allocated = 1; | ||
134 | if (!g) { | ||
135 | if (asprintf(&groupname, "%d", s.st_gid) == -1) | ||
136 | errExit("asprintf"); | ||
137 | } | ||
138 | else { | ||
139 | groupname = strdup(g->gr_name); | ||
140 | if (!groupname) | ||
141 | errExit("asprintf"); | ||
142 | } | ||
143 | } | ||
144 | |||
145 | // print grup name, 8 chars maximum | ||
146 | len = strlen(groupname); | ||
147 | if (len > 8) { | ||
148 | groupname[8] = '\0'; | ||
149 | len = 8; | ||
150 | } | ||
151 | printf("%s ", groupname); | ||
152 | for (i = len; i < 8; i++) | ||
153 | printf(" "); | ||
154 | if (allocated) | ||
155 | free(groupname); | ||
156 | |||
157 | char *sz; | ||
158 | if (asprintf(&sz, "%d", (int) s.st_size) == -1) | ||
159 | errExit("asprintf"); | ||
160 | printf("%11.10s %s\n", sz, fname); | ||
161 | free(sz); | ||
162 | |||
163 | } | ||
164 | |||
165 | static void print_directory(const char *path) { | ||
166 | assert(path); | ||
167 | struct stat s; | ||
168 | if (stat(path, &s) == -1) | ||
169 | return; | ||
170 | assert(S_ISDIR(s.st_mode)); | ||
171 | |||
172 | DIR *dir; | ||
173 | if (!(dir = opendir(path))) { | ||
174 | // sleep 2 seconds and try again | ||
175 | sleep(2); | ||
176 | if (!(dir = opendir(path))) { | ||
177 | fprintf(stderr, "Error: cannot open directory %s\n", path); | ||
178 | exit(1); | ||
179 | } | ||
180 | } | ||
181 | |||
182 | struct dirent *entry; | ||
183 | while ((entry = readdir(dir))) { | ||
184 | if (strcmp(entry->d_name, ".") == 0) | ||
185 | continue; | ||
186 | if (strcmp(entry->d_name, "..") == 0) | ||
187 | continue; | ||
188 | |||
189 | print_file_or_dir(path, entry->d_name, 0); | ||
190 | } | ||
191 | |||
192 | closedir(dir); | ||
193 | } | ||
194 | |||
195 | void ls_name(const char *name, const char *path) { | ||
196 | EUID_ASSERT(); | ||
197 | |||
198 | if (!name || strlen(name) == 0) { | ||
199 | fprintf(stderr, "Error: invalid sandbox name\n"); | ||
200 | exit(1); | ||
201 | } | ||
202 | pid_t pid; | ||
203 | if (name2pid(name, &pid)) { | ||
204 | fprintf(stderr, "Error: cannot find sandbox %s\n", name); | ||
205 | exit(1); | ||
206 | } | ||
207 | |||
208 | ls(pid, path); | ||
209 | } | ||
210 | |||
211 | void ls(pid_t pid, const char *path) { | ||
212 | EUID_ASSERT(); | ||
213 | |||
214 | // if the pid is that of a firejail process, use the pid of the first child process | ||
215 | char *comm = pid_proc_comm(pid); | ||
216 | if (comm) { | ||
217 | if (strcmp(comm, "firejail") == 0) { | ||
218 | pid_t child; | ||
219 | if (find_child(pid, &child) == 0) { | ||
220 | pid = child; | ||
221 | } | ||
222 | } | ||
223 | free(comm); | ||
224 | } | ||
225 | |||
226 | // check privileges for non-root users | ||
227 | uid_t uid = getuid(); | ||
228 | if (uid != 0) { | ||
229 | uid_t sandbox_uid = pid_get_uid(pid); | ||
230 | if (uid != sandbox_uid) { | ||
231 | fprintf(stderr, "Error: permission denied.\n"); | ||
232 | exit(1); | ||
233 | } | ||
234 | } | ||
235 | |||
236 | EUID_ROOT(); | ||
237 | // chroot | ||
238 | char *rootdir; | ||
239 | if (asprintf(&rootdir, "/proc/%d/root", pid) == -1) | ||
240 | errExit("asprintf"); | ||
241 | if (chroot(rootdir) < 0) | ||
242 | errExit("chroot"); | ||
243 | if (chdir("/") < 0) | ||
244 | errExit("chdir"); | ||
245 | |||
246 | // full path or file in current directory? | ||
247 | char *fname; | ||
248 | if (*path == '/') { | ||
249 | fname = strdup(path); | ||
250 | if (!fname) | ||
251 | errExit("strdup"); | ||
252 | } | ||
253 | else if (*path == '~') { | ||
254 | if (asprintf(&fname, "%s%s", cfg.homedir, path + 1) == -1) | ||
255 | errExit("asprintf"); | ||
256 | } | ||
257 | else { | ||
258 | fprintf(stderr, "Error: Cannot access file %s\n", path); | ||
259 | exit(1); | ||
260 | } | ||
261 | |||
262 | // list directory contents | ||
263 | struct stat s; | ||
264 | if (stat(fname, &s) == -1) { | ||
265 | fprintf(stderr, "Error: Cannot access file %s\n", fname); | ||
266 | exit(1); | ||
267 | } | ||
268 | if (S_ISDIR(s.st_mode)) { | ||
269 | char *rp = realpath(fname, NULL); | ||
270 | if (!rp) { | ||
271 | fprintf(stderr, "Error: Cannot access file %s\n", fname); | ||
272 | exit(1); | ||
273 | } | ||
274 | if (arg_debug) | ||
275 | printf("realpath %s\n", rp); | ||
276 | |||
277 | char *dir; | ||
278 | if (asprintf(&dir, "%s/", rp) == -1) | ||
279 | errExit("asprintf"); | ||
280 | |||
281 | print_directory(dir); | ||
282 | free(rp); | ||
283 | free(dir); | ||
284 | } | ||
285 | else { | ||
286 | char *rp = realpath(fname, NULL); | ||
287 | if (!rp) { | ||
288 | fprintf(stderr, "Error: Cannot access file %s\n", fname); | ||
289 | exit(1); | ||
290 | } | ||
291 | if (arg_debug) | ||
292 | printf("realpath %s\n", rp); | ||
293 | char *split = strrchr(rp, '/'); | ||
294 | if (split) { | ||
295 | *split = '\0'; | ||
296 | char *rp2 = split + 1; | ||
297 | if (arg_debug) | ||
298 | printf("path %s, file %s\n", rp, rp2); | ||
299 | print_file_or_dir(rp, rp2, 1); | ||
300 | } | ||
301 | free(rp); | ||
302 | } | ||
303 | |||
304 | free(fname); | ||
305 | |||
306 | exit(0); | ||
307 | } | ||
diff --git a/src/firejail/main.c b/src/firejail/main.c index 925cd3022..68606a313 100644 --- a/src/firejail/main.c +++ b/src/firejail/main.c | |||
@@ -426,6 +426,29 @@ static void run_cmd_and_exit(int i, int argc, char **argv) { | |||
426 | exit(0); | 426 | exit(0); |
427 | } | 427 | } |
428 | #endif | 428 | #endif |
429 | else if (strncmp(argv[i], "--ls=", 5) == 0) { | ||
430 | logargs(argc, argv); | ||
431 | |||
432 | // verify path | ||
433 | if ((i + 2) != argc) { | ||
434 | fprintf(stderr, "Error: invalid --ls option, path expected\n"); | ||
435 | exit(1); | ||
436 | } | ||
437 | char *path = argv[i + 1]; | ||
438 | invalid_filename(path); | ||
439 | if (strstr(path, "..")) { | ||
440 | fprintf(stderr, "Error: invalid file name %s\n", path); | ||
441 | exit(1); | ||
442 | } | ||
443 | |||
444 | // list directory contents | ||
445 | pid_t pid; | ||
446 | if (read_pid(argv[i] + 5, &pid) == 0) | ||
447 | ls(pid, path); | ||
448 | else | ||
449 | ls_name(argv[i] + 5, path); | ||
450 | exit(0); | ||
451 | } | ||
429 | else if (strncmp(argv[i], "--join=", 7) == 0) { | 452 | else if (strncmp(argv[i], "--join=", 7) == 0) { |
430 | logargs(argc, argv); | 453 | logargs(argc, argv); |
431 | 454 | ||
diff --git a/src/firejail/util.c b/src/firejail/util.c index 3463095f9..5c5e7d9e8 100644 --- a/src/firejail/util.c +++ b/src/firejail/util.c | |||
@@ -566,6 +566,7 @@ const char *gnu_basename(const char *path) { | |||
566 | uid_t pid_get_uid(pid_t pid) { | 566 | uid_t pid_get_uid(pid_t pid) { |
567 | EUID_ASSERT(); | 567 | EUID_ASSERT(); |
568 | uid_t rv = 0; | 568 | uid_t rv = 0; |
569 | printf("here %d, pid %d\n", __LINE__, pid); | ||
569 | 570 | ||
570 | // open status file | 571 | // open status file |
571 | char *file; | 572 | char *file; |
diff --git a/src/lib/pid.c b/src/lib/pid.c index 6251f8b61..a89ac434b 100644 --- a/src/lib/pid.c +++ b/src/lib/pid.c | |||
@@ -136,13 +136,14 @@ char *pid_get_user_name(uid_t uid) { | |||
136 | 136 | ||
137 | uid_t pid_get_uid(pid_t pid) { | 137 | uid_t pid_get_uid(pid_t pid) { |
138 | uid_t rv = 0; | 138 | uid_t rv = 0; |
139 | 139 | ||
140 | // open statua file | 140 | // open status file |
141 | char *file; | 141 | char *file; |
142 | if (asprintf(&file, "/proc/%u/status", pid) == -1) { | 142 | if (asprintf(&file, "/proc/%u/status", pid) == -1) { |
143 | perror("asprintf"); | 143 | perror("asprintf"); |
144 | exit(1); | 144 | exit(1); |
145 | } | 145 | } |
146 | |||
146 | FILE *fp = fopen(file, "r"); | 147 | FILE *fp = fopen(file, "r"); |
147 | if (!fp) { | 148 | if (!fp) { |
148 | free(file); | 149 | free(file); |