Annotation of src/usr.bin/file/file.c, Revision 1.68
1.68 ! deraadt 1: /* $OpenBSD: file.c,v 1.67 2019/01/06 18:35:19 tedu Exp $ */
1.27 nicm 2:
1.14 tedu 3: /*
1.27 nicm 4: * Copyright (c) 2015 Nicholas Marriott <nicm@openbsd.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.14 tedu 17: */
1.11 ian 18:
1.20 deraadt 19: #include <sys/types.h>
1.66 brynet 20: #include <sys/ioctl.h>
1.27 nicm 21: #include <sys/mman.h>
1.66 brynet 22: #include <sys/queue.h>
23: #include <sys/socket.h>
1.58 nicm 24: #include <sys/stat.h>
1.66 brynet 25: #include <sys/uio.h>
26: #include <sys/wait.h>
1.20 deraadt 27:
1.58 nicm 28: #include <err.h>
1.27 nicm 29: #include <errno.h>
1.58 nicm 30: #include <fcntl.h>
31: #include <getopt.h>
1.66 brynet 32: #include <imsg.h>
1.27 nicm 33: #include <libgen.h>
1.58 nicm 34: #include <limits.h>
1.27 nicm 35: #include <pwd.h>
1.1 deraadt 36: #include <stdlib.h>
1.58 nicm 37: #include <string.h>
1.44 nicm 38: #include <time.h>
1.14 tedu 39: #include <unistd.h>
40:
1.27 nicm 41: #include "file.h"
42: #include "magic.h"
43: #include "xmalloc.h"
1.1 deraadt 44:
1.66 brynet 45: struct input_msg {
46: int idx;
47:
48: struct stat sb;
49: int error;
50:
51: char link_path[PATH_MAX];
52: int link_error;
53: int link_target;
54: };
55:
56: struct input_ack {
57: int idx;
58: };
59:
1.59 nicm 60: struct input_file {
1.66 brynet 61: struct magic *m;
62: struct input_msg *msg;
1.1 deraadt 63:
1.66 brynet 64: const char *path;
65: int fd;
1.14 tedu 66:
1.66 brynet 67: void *base;
68: size_t size;
69: int mapped;
70: char *result;
1.27 nicm 71: };
1.1 deraadt 72:
1.27 nicm 73: extern char *__progname;
1.1 deraadt 74:
1.27 nicm 75: __dead void usage(void);
1.1 deraadt 76:
1.66 brynet 77: static int prepare_message(struct input_msg *, int, const char *);
78: static void send_message(struct imsgbuf *, void *, size_t, int);
79: static int read_message(struct imsgbuf *, struct imsg *, pid_t);
80:
81: static void read_link(struct input_msg *, const char *);
1.35 nicm 82:
1.66 brynet 83: static __dead void child(int, pid_t, int, char **);
1.35 nicm 84:
85: static void test_file(struct input_file *, size_t);
1.27 nicm 86:
87: static int try_stat(struct input_file *);
88: static int try_empty(struct input_file *);
89: static int try_access(struct input_file *);
90: static int try_text(struct input_file *);
91: static int try_magic(struct input_file *);
92: static int try_unknown(struct input_file *);
93:
94: static int bflag;
95: static int cflag;
96: static int iflag;
97: static int Lflag;
98: static int sflag;
99: static int Wflag;
100:
1.66 brynet 101: static char *magicpath;
102: static FILE *magicfp;
103:
1.27 nicm 104: static struct option longopts[] = {
1.57 jca 105: { "brief", no_argument, NULL, 'b' },
106: { "dereference", no_argument, NULL, 'L' },
107: { "mime", no_argument, NULL, 'i' },
108: { "mime-type", no_argument, NULL, 'i' },
109: { NULL, 0, NULL, 0 }
1.27 nicm 110: };
1.14 tedu 111:
1.27 nicm 112: __dead void
113: usage(void)
114: {
1.39 jmc 115: fprintf(stderr, "usage: %s [-bchiLsW] file ...\n", __progname);
1.27 nicm 116: exit(1);
117: }
1.14 tedu 118:
1.1 deraadt 119: int
1.27 nicm 120: main(int argc, char **argv)
1.1 deraadt 121: {
1.66 brynet 122: int opt, pair[2], fd, idx;
123: char *home;
1.27 nicm 124: struct passwd *pw;
1.66 brynet 125: struct imsgbuf ibuf;
126: struct imsg imsg;
127: struct input_msg msg;
128: struct input_ack *ack;
129: pid_t pid, parent;
1.44 nicm 130:
1.66 brynet 131: tzset();
1.27 nicm 132:
133: for (;;) {
134: opt = getopt_long(argc, argv, "bchiLsW", longopts, NULL);
135: if (opt == -1)
1.18 chl 136: break;
1.27 nicm 137: switch (opt) {
1.9 millert 138: case 'b':
1.27 nicm 139: bflag = 1;
1.9 millert 140: break;
1.1 deraadt 141: case 'c':
1.27 nicm 142: cflag = 1;
1.14 tedu 143: break;
1.27 nicm 144: case 'h':
145: Lflag = 0;
1.14 tedu 146: break;
1.19 chl 147: case 'i':
1.27 nicm 148: iflag = 1;
1.19 chl 149: break;
1.27 nicm 150: case 'L':
151: Lflag = 1;
1.14 tedu 152: break;
153: case 's':
1.27 nicm 154: sflag = 1;
1.14 tedu 155: break;
1.27 nicm 156: case 'W':
157: Wflag = 1;
1.18 chl 158: break;
1.1 deraadt 159: default:
1.27 nicm 160: usage();
1.1 deraadt 161: }
1.27 nicm 162: }
163: argc -= optind;
164: argv += optind;
165: if (cflag) {
166: if (argc != 0)
167: usage();
168: } else if (argc == 0)
169: usage();
1.67 tedu 170:
171: if (pledge("stdio rpath getpw recvfd sendfd id proc", NULL) == -1)
172: err(1, "pledge");
1.1 deraadt 173:
1.66 brynet 174: magicfp = NULL;
1.32 nicm 175: if (geteuid() != 0 && !issetugid()) {
176: home = getenv("HOME");
177: if (home == NULL || *home == '\0') {
178: pw = getpwuid(getuid());
179: if (pw != NULL)
180: home = pw->pw_dir;
181: else
182: home = NULL;
183: }
184: if (home != NULL) {
1.35 nicm 185: xasprintf(&magicpath, "%s/.magic", home);
186: magicfp = fopen(magicpath, "r");
187: if (magicfp == NULL)
188: free(magicpath);
1.32 nicm 189: }
1.27 nicm 190: }
1.35 nicm 191: if (magicfp == NULL) {
192: magicpath = xstrdup("/etc/magic");
193: magicfp = fopen(magicpath, "r");
194: }
195: if (magicfp == NULL)
196: err(1, "%s", magicpath);
197:
1.66 brynet 198: parent = getpid();
199: if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pair) != 0)
200: err(1, "socketpair");
201: switch (pid = fork()) {
202: case -1:
203: err(1, "fork");
204: case 0:
205: close(pair[0]);
206: child(pair[1], parent, argc, argv);
1.35 nicm 207: }
1.66 brynet 208: close(pair[1]);
1.61 deraadt 209:
1.66 brynet 210: fclose(magicfp);
211: magicfp = NULL;
1.35 nicm 212:
1.66 brynet 213: if (cflag)
214: goto wait_for_child;
1.35 nicm 215:
1.66 brynet 216: imsg_init(&ibuf, pair[0]);
217: for (idx = 0; idx < argc; idx++) {
218: fd = prepare_message(&msg, idx, argv[idx]);
219: send_message(&ibuf, &msg, sizeof msg, fd);
1.35 nicm 220:
1.66 brynet 221: if (read_message(&ibuf, &imsg, pid) == 0)
222: break;
223: if (imsg.hdr.len != IMSG_HEADER_SIZE + sizeof *ack)
224: errx(1, "message too small");
225: ack = imsg.data;
226: if (ack->idx != idx)
227: errx(1, "index not expected");
228: imsg_free(&imsg);
1.1 deraadt 229: }
230:
1.66 brynet 231: wait_for_child:
232: close(pair[0]);
233: while (wait(NULL) == -1 && errno != ECHILD) {
234: if (errno != EINTR)
235: err(1, "wait");
1.30 nicm 236: }
1.66 brynet 237: _exit(0); /* let the child flush */
1.55 nicm 238: }
239:
1.66 brynet 240: static int
241: prepare_message(struct input_msg *msg, int idx, const char *path)
1.55 nicm 242: {
243: int fd, mode, error;
244:
1.66 brynet 245: memset(msg, 0, sizeof *msg);
246: msg->idx = idx;
1.63 brynet 247:
1.55 nicm 248: if (strcmp(path, "-") == 0) {
1.66 brynet 249: if (fstat(STDIN_FILENO, &msg->sb) == -1) {
250: msg->error = errno;
251: return (-1);
1.55 nicm 252: }
1.66 brynet 253: return (STDIN_FILENO);
1.55 nicm 254: }
255:
256: if (Lflag)
1.66 brynet 257: error = stat(path, &msg->sb);
1.55 nicm 258: else
1.66 brynet 259: error = lstat(path, &msg->sb);
1.55 nicm 260: if (error == -1) {
1.66 brynet 261: msg->error = errno;
262: return (-1);
1.55 nicm 263: }
264:
1.66 brynet 265: /*
266: * pledge(2) doesn't let us pass directory file descriptors around -
267: * but in fact we don't need them, so just don't open directories or
268: * symlinks (which could be to directories).
269: */
270: mode = msg->sb.st_mode;
1.55 nicm 271: if (!S_ISDIR(mode) && !S_ISLNK(mode)) {
272: fd = open(path, O_RDONLY|O_NONBLOCK);
273: if (fd == -1 && (errno == ENFILE || errno == EMFILE))
274: err(1, "open");
275: } else
276: fd = -1;
277: if (S_ISLNK(mode))
1.66 brynet 278: read_link(msg, path);
279: return (fd);
280:
1.27 nicm 281: }
282:
283: static void
1.66 brynet 284: send_message(struct imsgbuf *ibuf, void *msg, size_t msglen, int fd)
285: {
286: if (imsg_compose(ibuf, -1, -1, 0, fd, msg, msglen) != 1)
287: err(1, "imsg_compose");
288: if (imsg_flush(ibuf) != 0)
289: err(1, "imsg_flush");
290: }
291:
292: static int
293: read_message(struct imsgbuf *ibuf, struct imsg *imsg, pid_t from)
294: {
295: int n;
296:
297: while ((n = imsg_read(ibuf)) == -1 && errno == EAGAIN)
298: /* nothing */ ;
299: if (n == -1)
300: err(1, "imsg_read");
301: if (n == 0)
302: return (0);
303:
304: if ((n = imsg_get(ibuf, imsg)) == -1)
305: err(1, "imsg_get");
306: if (n == 0)
307: return (0);
308:
309: if ((pid_t)imsg->hdr.pid != from)
310: errx(1, "PIDs don't match");
311:
312: return (n);
313:
314: }
315:
316: static void
317: read_link(struct input_msg *msg, const char *path)
1.14 tedu 318: {
1.27 nicm 319: struct stat sb;
1.35 nicm 320: char lpath[PATH_MAX];
1.27 nicm 321: char *copy, *root;
322: int used;
323: ssize_t size;
324:
1.47 tobias 325: size = readlink(path, lpath, sizeof lpath - 1);
1.27 nicm 326: if (size == -1) {
1.66 brynet 327: msg->link_error = errno;
1.14 tedu 328: return;
1.27 nicm 329: }
1.35 nicm 330: lpath[size] = '\0';
1.27 nicm 331:
1.35 nicm 332: if (*lpath == '/')
1.66 brynet 333: strlcpy(msg->link_path, lpath, sizeof msg->link_path);
1.27 nicm 334: else {
1.35 nicm 335: copy = xstrdup(path);
1.27 nicm 336:
337: root = dirname(copy);
338: if (*root == '\0' || strcmp(root, ".") == 0 ||
339: strcmp (root, "/") == 0)
1.66 brynet 340: strlcpy(msg->link_path, lpath, sizeof msg->link_path);
1.27 nicm 341: else {
1.66 brynet 342: used = snprintf(msg->link_path, sizeof msg->link_path,
1.35 nicm 343: "%s/%s", root, lpath);
1.66 brynet 344: if (used < 0 || (size_t)used >= sizeof msg->link_path) {
345: msg->link_error = ENAMETOOLONG;
1.37 lteo 346: free(copy);
1.27 nicm 347: return;
348: }
349: }
350:
351: free(copy);
352: }
353:
1.54 nicm 354: if (!Lflag && stat(path, &sb) == -1)
1.66 brynet 355: msg->link_target = errno;
356: }
357:
358: static __dead void
359: child(int fd, pid_t parent, int argc, char **argv)
360: {
361: struct passwd *pw;
362: struct magic *m;
363: struct imsgbuf ibuf;
364: struct imsg imsg;
365: struct input_msg *msg;
366: struct input_ack ack;
367: struct input_file inf;
368: int i, idx;
369: size_t len, width = 0;
370:
371: if (pledge("stdio getpw recvfd id", NULL) == -1)
372: err(1, "pledge");
373:
374: if (geteuid() == 0) {
375: pw = getpwnam(FILE_USER);
376: if (pw == NULL)
377: errx(1, "unknown user %s", FILE_USER);
378: if (setgroups(1, &pw->pw_gid) != 0)
379: err(1, "setgroups");
380: if (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) != 0)
381: err(1, "setresgid");
382: if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) != 0)
383: err(1, "setresuid");
384: }
385:
386: if (pledge("stdio recvfd", NULL) == -1)
387: err(1, "pledge");
388:
389: m = magic_load(magicfp, magicpath, cflag || Wflag);
390: if (cflag) {
391: magic_dump(m);
392: exit(0);
393: }
394:
395: for (i = 0; i < argc; i++) {
396: len = strlen(argv[i]) + 1;
397: if (len > width)
398: width = len;
399: }
400:
401: imsg_init(&ibuf, fd);
402: for (;;) {
403: if (read_message(&ibuf, &imsg, parent) == 0)
404: break;
405: if (imsg.hdr.len != IMSG_HEADER_SIZE + sizeof *msg)
406: errx(1, "message too small");
407: msg = imsg.data;
408:
409: idx = msg->idx;
410: if (idx < 0 || idx >= argc)
411: errx(1, "index out of range");
412:
413: memset(&inf, 0, sizeof inf);
414: inf.m = m;
415: inf.msg = msg;
416:
417: inf.path = argv[idx];
418: inf.fd = imsg.fd;
419:
420: test_file(&inf, width);
421:
422: if (imsg.fd != -1)
423: close(imsg.fd);
424: imsg_free(&imsg);
425:
426: ack.idx = idx;
427: send_message(&ibuf, &ack, sizeof ack, -1);
428: }
429: exit(0);
1.35 nicm 430: }
431:
1.27 nicm 432: static void *
1.42 nicm 433: fill_buffer(int fd, size_t size, size_t *used)
1.1 deraadt 434: {
1.27 nicm 435: static void *buffer;
436: ssize_t got;
437: size_t left;
438: void *next;
439:
440: if (buffer == NULL)
441: buffer = xmalloc(FILE_READ_SIZE);
442:
443: next = buffer;
1.42 nicm 444: left = size;
1.27 nicm 445: while (left != 0) {
1.42 nicm 446: got = read(fd, next, left);
1.27 nicm 447: if (got == -1) {
448: if (errno == EINTR)
449: continue;
1.59 nicm 450: return (NULL);
1.5 millert 451: }
1.27 nicm 452: if (got == 0)
453: break;
1.30 nicm 454: next = (char *)next + got;
1.27 nicm 455: left -= got;
456: }
1.42 nicm 457: *used = size - left;
1.59 nicm 458: return (buffer);
1.27 nicm 459: }
460:
461: static int
462: load_file(struct input_file *inf)
463: {
1.42 nicm 464: size_t used;
465:
1.66 brynet 466: if (inf->msg->sb.st_size == 0 && S_ISREG(inf->msg->sb.st_mode))
1.43 nicm 467: return (0); /* empty file */
1.66 brynet 468: if (inf->msg->sb.st_size == 0 || inf->msg->sb.st_size > FILE_READ_SIZE)
1.27 nicm 469: inf->size = FILE_READ_SIZE;
1.46 tobias 470: else
1.66 brynet 471: inf->size = inf->msg->sb.st_size;
1.43 nicm 472:
1.66 brynet 473: if (!S_ISREG(inf->msg->sb.st_mode))
1.43 nicm 474: goto try_read;
1.27 nicm 475:
476: inf->base = mmap(NULL, inf->size, PROT_READ, MAP_PRIVATE, inf->fd, 0);
1.43 nicm 477: if (inf->base == MAP_FAILED)
478: goto try_read;
479: inf->mapped = 1;
480: return (0);
481:
482: try_read:
483: inf->base = fill_buffer(inf->fd, inf->size, &used);
484: if (inf->base == NULL) {
485: xasprintf(&inf->result, "cannot read '%s' (%s)", inf->path,
486: strerror(errno));
487: return (1);
488: }
489: inf->size = used;
1.27 nicm 490: return (0);
491: }
1.5 millert 492:
1.27 nicm 493: static int
494: try_stat(struct input_file *inf)
495: {
1.66 brynet 496: if (inf->msg->error != 0) {
1.27 nicm 497: xasprintf(&inf->result, "cannot stat '%s' (%s)", inf->path,
1.66 brynet 498: strerror(inf->msg->error));
1.27 nicm 499: return (1);
500: }
1.45 nicm 501: if (sflag || strcmp(inf->path, "-") == 0) {
1.66 brynet 502: switch (inf->msg->sb.st_mode & S_IFMT) {
1.45 nicm 503: case S_IFIFO:
504: if (strcmp(inf->path, "-") != 0)
505: break;
1.27 nicm 506: case S_IFBLK:
507: case S_IFCHR:
508: case S_IFREG:
509: return (0);
1.5 millert 510: }
1.27 nicm 511: }
1.1 deraadt 512:
1.66 brynet 513: if (iflag && (inf->msg->sb.st_mode & S_IFMT) != S_IFREG) {
1.27 nicm 514: xasprintf(&inf->result, "application/x-not-regular-file");
515: return (1);
1.1 deraadt 516: }
517:
1.66 brynet 518: switch (inf->msg->sb.st_mode & S_IFMT) {
1.27 nicm 519: case S_IFDIR:
520: xasprintf(&inf->result, "directory");
521: return (1);
522: case S_IFLNK:
1.66 brynet 523: if (inf->msg->link_error != 0) {
1.27 nicm 524: xasprintf(&inf->result, "unreadable symlink '%s' (%s)",
1.66 brynet 525: inf->path, strerror(inf->msg->link_error));
1.27 nicm 526: return (1);
527: }
1.66 brynet 528: if (inf->msg->link_target == ELOOP)
1.27 nicm 529: xasprintf(&inf->result, "symbolic link in a loop");
1.66 brynet 530: else if (inf->msg->link_target != 0) {
1.27 nicm 531: xasprintf(&inf->result, "broken symbolic link to '%s'",
1.66 brynet 532: inf->msg->link_path);
1.27 nicm 533: } else {
534: xasprintf(&inf->result, "symbolic link to '%s'",
1.66 brynet 535: inf->msg->link_path);
1.27 nicm 536: }
537: return (1);
538: case S_IFSOCK:
539: xasprintf(&inf->result, "socket");
540: return (1);
541: case S_IFBLK:
1.68 ! deraadt 542: xasprintf(&inf->result, "block special (%lu/%lu)",
1.66 brynet 543: (long)major(inf->msg->sb.st_rdev),
544: (long)minor(inf->msg->sb.st_rdev));
1.27 nicm 545: return (1);
546: case S_IFCHR:
1.68 ! deraadt 547: xasprintf(&inf->result, "character special (%lu/%lu)",
1.66 brynet 548: (long)major(inf->msg->sb.st_rdev),
549: (long)minor(inf->msg->sb.st_rdev));
1.27 nicm 550: return (1);
551: case S_IFIFO:
552: xasprintf(&inf->result, "fifo (named pipe)");
553: return (1);
1.1 deraadt 554: }
1.27 nicm 555: return (0);
556: }
557:
558: static int
559: try_empty(struct input_file *inf)
560: {
561: if (inf->size != 0)
562: return (0);
563:
564: if (iflag)
565: xasprintf(&inf->result, "application/x-empty");
566: else
567: xasprintf(&inf->result, "empty");
568: return (1);
569: }
570:
571: static int
572: try_access(struct input_file *inf)
573: {
574: char tmp[256] = "";
575:
1.66 brynet 576: if (inf->msg->sb.st_size == 0 && S_ISREG(inf->msg->sb.st_mode))
1.49 nicm 577: return (0); /* empty file */
1.27 nicm 578: if (inf->fd != -1)
579: return (0);
1.1 deraadt 580:
1.66 brynet 581: if (inf->msg->sb.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
1.27 nicm 582: strlcat(tmp, "writable, ", sizeof tmp);
1.66 brynet 583: if (inf->msg->sb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))
1.27 nicm 584: strlcat(tmp, "executable, ", sizeof tmp);
1.66 brynet 585: if (S_ISREG(inf->msg->sb.st_mode))
1.27 nicm 586: strlcat(tmp, "regular file, ", sizeof tmp);
587: strlcat(tmp, "no read permission", sizeof tmp);
588:
589: inf->result = xstrdup(tmp);
590: return (1);
1.1 deraadt 591: }
592:
1.27 nicm 593: static int
594: try_text(struct input_file *inf)
1.14 tedu 595: {
1.27 nicm 596: const char *type, *s;
597: int flags;
598:
599: flags = MAGIC_TEST_TEXT;
600: if (iflag)
601: flags |= MAGIC_TEST_MIME;
602:
603: type = text_get_type(inf->base, inf->size);
604: if (type == NULL)
605: return (0);
1.14 tedu 606:
1.27 nicm 607: s = magic_test(inf->m, inf->base, inf->size, flags);
608: if (s != NULL) {
609: inf->result = xstrdup(s);
610: return (1);
611: }
612:
613: s = text_try_words(inf->base, inf->size, flags);
614: if (s != NULL) {
615: if (iflag)
616: inf->result = xstrdup(s);
1.18 chl 617: else
1.27 nicm 618: xasprintf(&inf->result, "%s %s text", type, s);
619: return (1);
1.18 chl 620: }
1.14 tedu 621:
1.27 nicm 622: if (iflag)
623: inf->result = xstrdup("text/plain");
1.14 tedu 624: else
1.27 nicm 625: xasprintf(&inf->result, "%s text", type);
626: return (1);
1.14 tedu 627: }
628:
1.27 nicm 629: static int
630: try_magic(struct input_file *inf)
1.1 deraadt 631: {
1.27 nicm 632: const char *s;
633: int flags;
1.1 deraadt 634:
1.27 nicm 635: flags = 0;
636: if (iflag)
637: flags |= MAGIC_TEST_MIME;
638:
639: s = magic_test(inf->m, inf->base, inf->size, flags);
640: if (s != NULL) {
641: inf->result = xstrdup(s);
642: return (1);
1.1 deraadt 643: }
1.27 nicm 644: return (0);
1.14 tedu 645: }
1.1 deraadt 646:
1.27 nicm 647: static int
648: try_unknown(struct input_file *inf)
1.14 tedu 649: {
1.27 nicm 650: if (iflag)
1.65 bentley 651: xasprintf(&inf->result, "application/octet-stream");
1.27 nicm 652: else
653: xasprintf(&inf->result, "data");
654: return (1);
1.1 deraadt 655: }
656:
1.27 nicm 657: static void
1.35 nicm 658: test_file(struct input_file *inf, size_t width)
1.1 deraadt 659: {
1.35 nicm 660: char *label;
661: int stop;
1.27 nicm 662:
663: stop = 0;
664: if (!stop)
665: stop = try_stat(inf);
666: if (!stop)
667: stop = try_access(inf);
668: if (!stop)
669: stop = load_file(inf);
670: if (!stop)
671: stop = try_empty(inf);
672: if (!stop)
673: stop = try_magic(inf);
674: if (!stop)
675: stop = try_text(inf);
676: if (!stop)
677: stop = try_unknown(inf);
678:
679: if (bflag)
680: printf("%s\n", inf->result);
1.35 nicm 681: else {
1.45 nicm 682: if (strcmp(inf->path, "-") == 0)
683: xasprintf(&label, "/dev/stdin:");
684: else
685: xasprintf(&label, "%s:", inf->path);
1.35 nicm 686: printf("%-*s %s\n", (int)width, label, inf->result);
687: free(label);
688: }
1.30 nicm 689: free(inf->result);
1.27 nicm 690:
691: if (inf->mapped && inf->base != NULL)
692: munmap(inf->base, inf->size);
1.1 deraadt 693: }
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