source: MondoRescue/trunk/mondo/src/common/libmondo-files.c@ 1106

Last change on this file since 1106 was 1106, checked in by Bruno Cornec, 17 years ago

merge -r1082:1105 $SVN_M/branches/stable
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File size: 33.8 KB
Line 
1/* $Id: libmondo-files.c 1106 2007-02-07 22:55:11Z bruno $
2 * file manipulation
3*/
4
5/**
6 * @file
7 * Functions to manipulate files.
8 */
9
10
11#include "my-stuff.h"
12#include "mondostructures.h"
13#include "libmondo-files.h"
14
15#include "libmondo-tools-EXT.h"
16#include "newt-specific-EXT.h"
17#include "libmondo-devices-EXT.h"
18#include "libmondo-fork-EXT.h"
19#include "libmondo-string-EXT.h"
20#include "mr_mem.h"
21
22#include "mr_file.h"
23
24/*@unused@*/
25//static char cvsid[] = "$Id: libmondo-files.c 1106 2007-02-07 22:55:11Z bruno $";
26
27extern char **err_log_lines;
28
29extern int g_currentY;
30extern int g_noof_log_lines;
31extern char *g_mondo_home;
32
33/**
34 * @addtogroup fileGroup
35 * @{
36 */
37/**
38 * Get an md5 checksum of the specified file.
39 * @param filename The file to checksum.
40 * @return The 32-character ASCII representation of the 128-bit checksum.
41 * @note The returned string points to static storage that will be overwritten with each call.
42 */
43char *calc_checksum_of_file(char *filename)
44{
45 /*@ buffers ***************************************************** */
46 static char *output = NULL;
47 char *command;
48 char *tmp;
49 size_t n = 0;
50
51 /*@ pointers **************************************************** */
52 char *p;
53 FILE *fin;
54
55 /*@ initialize pointers ***************************************** */
56
57 p = output;
58
59 /*@************************************************************** */
60
61 assert_string_is_neither_NULL_nor_zerolength(filename);
62
63 if (does_file_exist(filename)) {
64 mr_asprintf(&command, "md5sum \"%s\"", filename);
65 fin = popen(command, "r");
66 mr_free(command);
67
68 if (fin) {
69 mr_getline(&output, &n, fin);
70 p = strchr(output, ' ');
71 paranoid_pclose(fin);
72 }
73 } else {
74 mr_asprintf(&tmp, "File '%s' not found; cannot calc checksum",
75 filename);
76 log_it(tmp);
77 mr_free(tmp);
78 }
79 if (p) {
80 *p = '\0';
81 }
82 return (output);
83}
84
85
86/**
87 * Get the number of lines in @p filename.
88 * @param filename The file to count lines in.
89 * @return The number of lines in @p filename.
90 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
91 */
92long count_lines_in_file(char *filename)
93{
94
95 /*@ buffers ***************************************************** */
96 char *command;
97 char *incoming = NULL;
98 char *tmp;
99
100 /*@ long ******************************************************** */
101 long noof_lines = -1L;
102
103 /*@ int ******************************************************** */
104 size_t n = 0;
105
106 /*@ pointers **************************************************** */
107 FILE *fin;
108
109 assert_string_is_neither_NULL_nor_zerolength(filename);
110 if (!does_file_exist(filename)) {
111 mr_asprintf(&tmp,
112 "%s does not exist, so I cannot found the number of lines in it",
113 filename);
114 log_it(tmp);
115 mr_free(tmp);
116 return (0);
117 }
118 mr_asprintf(&command, "cat %s | wc -l", filename);
119 if (!does_file_exist(filename)) {
120 return (-1);
121 }
122 fin = popen(command, "r");
123 mr_free(command);
124
125 if (fin) {
126 if (feof(fin)) {
127 noof_lines = 0;
128 } else {
129 mr_getline(&incoming, &n, fin);
130 while (strlen(incoming) > 0
131 && incoming[strlen(incoming) - 1] < 32) {
132 incoming[strlen(incoming) - 1] = '\0';
133 }
134 noof_lines = atol(incoming);
135 mr_free(incoming);
136 }
137 paranoid_pclose(fin);
138 }
139 return (noof_lines);
140}
141
142
143/**
144 * Check for existence of given @p filename.
145 * @param filename The file to check for.
146 * @return TRUE if it exists, FALSE otherwise.
147 */
148bool does_file_exist(char *filename)
149{
150
151 /*@ structures ************************************************** */
152 struct stat buf;
153
154 /*@************************************************************** */
155
156 assert(filename != NULL);
157
158 if (lstat(filename, &buf)) {
159 mr_msg(20, "%s does not exist", filename);
160 return (FALSE);
161 } else {
162 mr_msg(20, "%s exists", filename);
163 return (TRUE);
164 }
165}
166
167
168/**
169 * Modify @p inout (a file containing a list of files) to only contain files
170 * that exist.
171 * @param inout The filelist to operate on.
172 * @note The original file is renamed beforehand, so it will not be accessible
173 * while the modification is in progress.
174 */
175void exclude_nonexistent_files(char *inout)
176{
177 char *infname;
178 char *outfname;
179 char *tmp;
180 char *incoming = NULL;
181
182 /*@ int ********************************************************* */
183 int i;
184 size_t n = 0;
185
186 /*@ pointers **************************************************** */
187 FILE *fin, *fout;
188
189
190 /*@ end vars *********************************************************** */
191
192 assert_string_is_neither_NULL_nor_zerolength(inout);
193
194 mr_asprintf(&infname, "%s.in", inout);
195
196 mr_asprintf(&tmp, "cp -f %s %s", inout, infname);
197 run_program_and_log_output(tmp, FALSE);
198 mr_free(tmp);
199
200 if (!(fin = fopen(infname, "r"))) {
201 log_OS_error("Unable to openin infname");
202 mr_free(infname);
203 return;
204 }
205
206 mr_asprintf(&outfname, "%s", inout);
207 if (!(fout = fopen(outfname, "w"))) {
208 log_OS_error("Unable to openout outfname");
209 mr_free(outfname);
210 return;
211 }
212 mr_free(outfname);
213
214 for (mr_getline(&incoming, &n, fin); !feof(fin);
215 mr_getline(&incoming, &n, fin)) {
216 i = strlen(incoming) - 1;
217 if (i >= 0 && incoming[i] < 32) {
218 incoming[i] = '\0';
219 }
220 if (does_file_exist(incoming)) {
221 fprintf(fout, "%s\n", incoming);
222 } else {
223 mr_asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
224 log_it(tmp);
225 mr_free(tmp);
226 }
227 }
228 mr_free(incoming);
229 paranoid_fclose(fout);
230 paranoid_fclose(fin);
231 unlink(infname);
232 mr_free(infname);
233}
234
235
236/**
237 * Attempt to find the user's kernel by calling Mindi.
238 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
239 * don't do anything.
240 * @param kernel Where to put the found kernel.
241 * @return 0 for success, 1 for failure.
242 */
243int figure_out_kernel_path_interactively_if_necessary(char *kernel)
244{
245 char *tmp = NULL;
246 char *command = NULL;
247
248 if (kernel == NULL) {
249 kernel = call_program_and_get_last_line_of_output
250 ("mindi --findkernel 2> /dev/null");
251 }
252 // If we didn't get anything back, check whether mindi raised a fatal error
253 if (kernel == NULL) {
254 mr_asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
255 tmp = call_program_and_get_last_line_of_output(command);
256 if (strlen(tmp) > 1) {
257 popup_and_OK(tmp);
258 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
259 }
260 mr_free(command);
261 mr_free(tmp);
262 }
263
264 if (kernel != NULL) {
265 log_it("Calling Mindi with kernel path of '%s'", kernel);
266 } else {
267 log_it("Calling Mindi without kernel, so asking one");
268 }
269
270 while (kernel == NULL) {
271 if (!ask_me_yes_or_no
272 (_("Kernel not found or invalid. Choose another?"))) {
273 return (1);
274 }
275 if (!popup_and_get_string
276 (_("Kernel path"),
277 _("What is the full path and filename of your kernel, please?"),
278 kernel)) {
279 fatal_error
280 ("Kernel not found. Please specify with the '-k' flag.");
281 }
282 log_it("User says kernel is at %s", kernel);
283 }
284 return (0);
285}
286
287
288/**
289 * Find location of specified executable in user's PATH.
290 * @param fname The basename of the executable to search for (e.g. @c afio).
291 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
292 * @note The returned string points to static storage that will be overwritten with each call.
293 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
294 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
295 * to nothing.
296 */
297char *find_home_of_exe(char *fname)
298{
299 /*@ buffers ********************* */
300 char *output = NULL;
301 char *incoming = NULL;
302 char *command = NULL;
303
304 /*@******************************* */
305
306 assert_string_is_neither_NULL_nor_zerolength(fname);
307
308 mr_asprintf(&command, "which %s 2> /dev/null", fname);
309 incoming = call_program_and_get_last_line_of_output(command);
310 mr_free(command);
311
312 if (incoming == NULL) {
313 if (system("which file > /dev/null 2> /dev/null")) {
314 return (NULL); // forget it :)
315 }
316 mr_asprintf(&command,
317 "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
318 incoming);
319 mr_free(incoming);
320
321 incoming = call_program_and_get_last_line_of_output(command);
322 mr_free(command);
323 }
324 if (incoming == NULL) // yes, it is == '\0' twice, not once :)
325 {
326 mr_asprintf(&command, "dirname %s 2> /dev/null", incoming);
327 mr_free(incoming);
328
329 incoming = call_program_and_get_last_line_of_output(command);
330 mr_free(command);
331 }
332 output = incoming;
333
334 if (output != NULL && does_file_exist(output)) {
335 mr_msg(4, "find_home_of_exe () --- Found %s at %s", fname, output);
336 } else {
337 mr_free(output);
338 mr_msg(4, "find_home_of_exe() --- Could not find %s", fname);
339 }
340 return (output);
341}
342
343
344/**
345 * Get the last sequence of digits surrounded by non-digits in the first 32k of
346 * a file.
347 * @param logfile The file to look in.
348 * @return The number found, or 0 if none.
349 */
350int get_trackno_from_logfile(char *logfile)
351{
352
353 /*@ pointers ********************************************************* */
354 FILE *fin;
355
356 /*@ int ************************************************************** */
357 int trackno = 0;
358 size_t len = 0;
359
360 /*@ buffer ************************************************************ */
361 char datablock[32701];
362
363 assert_string_is_neither_NULL_nor_zerolength(logfile);
364
365 if (!(fin = fopen(logfile, "r"))) {
366 log_OS_error("Unable to open logfile");
367 fatal_error("Unable to open logfile to read trackno");
368 }
369 len = fread(datablock, 1, 32700, fin);
370 paranoid_fclose(fin);
371 if (len <= 0) {
372 return (0);
373 }
374 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
375 datablock[len--] = '\0';
376 for (; len > 0 && isdigit(datablock[len - 1]); len--);
377 trackno = atoi(datablock + len);
378 return (trackno);
379}
380
381
382/**
383 * Get a percentage from the last line of @p filename. We look for the string
384 * "% done" on the last line and, if we find it, grab the number before the last % sign.
385 * @param filename The file to get the percentage from.
386 * @return The percentage found, or 0 for error.
387 */
388int grab_percentage_from_last_line_of_file(char *filename)
389{
390
391 char *lastline = NULL;
392 char *command = NULL;
393 char *p = NULL;
394 int i;
395
396 for (i = g_noof_log_lines - 1;
397 i >= 0 && !strstr(err_log_lines[i], "% Done")
398 && !strstr(err_log_lines[i], "% done"); i--);
399 if (i < 0) {
400 mr_asprintf(&command,
401 "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
402 filename, '%');
403 lastline = call_program_and_get_last_line_of_output(command);
404 mr_free(command);
405 if (!lastline) {
406 return (0);
407 }
408 } else {
409 mr_asprintf(&lastline, err_log_lines[i]);
410 }
411
412 p = strrchr(lastline, '%');
413 if (p) {
414 *p = '\0';
415 }
416 if (!p) {
417 mr_free(lastline);
418 return (0);
419 }
420 *p = '\0';
421 for (p--; *p != ' ' && p != lastline; p--);
422 if (p != lastline) {
423 p++;
424 }
425 i = atoi(p);
426 mr_free(lastline);
427
428 return (i);
429}
430
431
432/**
433 * Return the last line of @p filename.
434 * @param filename The file to get the last line of.
435 * @return The last line of the file.
436 * @note The returned string points to static storage that will be overwritten with each call.
437 */
438char *last_line_of_file(char *filename)
439{
440 /*@ buffers ***************************************************** */
441 char *output = NULL;
442 char *command = NULL;
443 char *tmp = NULL;
444
445 /*@ pointers **************************************************** */
446 FILE *fin;
447 size_t n = 0;
448
449 /*@ end vars **************************************************** */
450
451 if (!does_file_exist(filename)) {
452 mr_asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
453 filename);
454 log_it(tmp);
455 mr_free(tmp);
456 return (NULL);
457 }
458 mr_asprintf(&command, "tail -n1 %s", filename);
459 fin = popen(command, "r");
460 mr_free(command);
461
462 mr_getline(&output, &n, fin);
463 paranoid_pclose(fin);
464 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
465 output[strlen(output) - 1] = '\0';
466 }
467 return (output);
468}
469
470
471/**
472 * Get the length of @p filename in bytes.
473 * @param filename The file to get the length of.
474 * @return The length of the file, or -1 for error.
475 */
476off_t length_of_file(char *filename)
477{
478 /*@ pointers *************************************************** */
479 FILE *fin;
480
481 /*@ long long ************************************************* */
482 off_t length;
483
484 fin = fopen(filename, "r");
485 if (!fin) {
486 log_it("filename=%s", filename);
487 log_OS_error("Unable to openin filename");
488 return (-1);
489 }
490 fseeko(fin, 0, SEEK_END);
491 length = ftello(fin);
492 paranoid_fclose(fin);
493 return (length);
494}
495
496
497/**
498 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
499 * @param outdir_fname The directory to create.
500 * @return The return value of @c mkdir.
501 */
502/* BERLIOS: This function shouldn't call system at all */
503int make_hole_for_dir(char *outdir_fname)
504{
505 char *tmp;
506 int res = 0;
507
508 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
509 mr_asprintf(&tmp, "mkdir -p %s", outdir_fname);
510 res = system(tmp);
511 mr_free(tmp);
512 return (res);
513}
514
515
516/**
517 * Create the parent directories of @p outfile_fname.
518 * @param outfile_fname The file to make a "hole" for.
519 * @return 0, always.
520 * @bug Return value unnecessary.
521 */
522/* BERLIOS: This function shouldn't call system at all */
523int make_hole_for_file(char *outfile_fname)
524{
525 /*@ buffer ****************************************************** */
526 char *command;
527
528 /*@ int ******************************************************** */
529 int res = 0;
530
531 /*@ end vars *************************************************** */
532
533 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
534 assert(!strstr(outfile_fname, MNT_CDROM));
535 assert(!strstr(outfile_fname, "/dev/cdrom"));
536
537 mr_asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
538 res += system(command);
539 mr_free(command);
540
541 mr_asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
542 res += system(command);
543 mr_free(command);
544
545 mr_asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
546 res += system(command);
547 mr_free(command);
548 unlink(outfile_fname);
549 return (0);
550}
551
552
553/**
554 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
555 * @param filelist_fname The file to search through.
556 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
557 * @return The number of lines matched.
558 */
559long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
560{
561 /*@ long ******************************************************* */
562 long matches = 0;
563
564 /*@ pointers *************************************************** */
565 FILE *fin;
566
567 /*@ buffers **************************************************** */
568 char *incoming = NULL;
569
570 size_t n = 0;
571 /*@ end vars *************************************************** */
572
573
574 fin = fopen(filelist_fname, "r");
575
576 if (!fin) {
577 log_OS_error("Unable to openin filelist_fname");
578 return (0);
579 }
580 mr_getline(&incoming, &n, fin);
581 while (!feof(fin)) {
582 if (strstr(incoming, wildcard)) {
583 matches++;
584 }
585 mr_getline(&incoming, &n, fin);
586 }
587 paranoid_fclose(fin);
588 mr_free(incoming);
589 return (matches);
590}
591
592
593/**
594 * Register our PID in a file in /var/run.
595 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
596 * @param pid 0 to remove file, anything else to create it.
597 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
598 * @note This function does not provide support against multiple instances, unless you check for that yourself.
599 */
600void register_pid(pid_t pid, char *name_str)
601{
602 char *tmp;
603 char *lockfile_fname;
604 int res;
605 size_t n = 0;
606 FILE *fin;
607
608 mr_asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
609 if (!pid) {
610 log_it("Unregistering PID");
611 if (unlink(lockfile_fname)) {
612 log_it("Error unregistering PID");
613 }
614 mr_free(lockfile_fname);
615 return;
616 }
617 if (does_file_exist(lockfile_fname)) {
618 if ((fin = fopen(lockfile_fname, "r"))) {
619 mr_getline(&tmp, &n, fin);
620 paranoid_fclose(fin);
621 } else {
622 log_OS_error("Unable to openin lockfile_fname");
623 }
624 pid = (pid_t) atol(tmp);
625 mr_free(tmp);
626
627 mr_asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
628 res = system(tmp);
629 mr_free(tmp);
630 if (!res) {
631 log_it
632 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
633 lockfile_fname);
634 }
635 }
636 mr_asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
637 lockfile_fname);
638 mr_free(lockfile_fname);
639
640 if (system(tmp)) {
641 fatal_error("Cannot register PID");
642 }
643 mr_free(tmp);
644 return;
645}
646
647
648/**
649 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
650 * @param tmpdir The tempdir where the mountlist is stored.
651 * @param dev The device to search for.
652 * @return The size of the partition in KB.
653 */
654long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
655{
656 char *command = NULL;
657 char *sz_res = NULL;
658 long file_len_K = 0L;
659
660 mr_asprintf(&command,
661 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
662 dev, tmpdir);
663 log_it(command);
664 sz_res = call_program_and_get_last_line_of_output(command);
665 file_len_K = atol(sz_res);
666 mr_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
667 mr_free(command);
668 mr_free(sz_res);
669 return (file_len_K);
670}
671
672
673/**
674 * Calculate the total size (in KB) of all the biggiefiles in this backup.
675 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
676 * @return The total size of all biggiefiles in KB.
677 */
678long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
679{
680 char *fname = NULL;
681 char *biggielist = NULL;
682 char *comment = NULL;
683 char *tmp = NULL;
684 char *command = NULL;
685
686 /*@ long ******************************************************** */
687 long scratchL = 0L;
688 long file_len_K = 0L;
689
690 /*@ pointers *************************************************** */
691 FILE *fin = NULL;
692 size_t n = 0;
693
694 /*@ end vars *************************************************** */
695
696 log_it("Calculating size of all biggiefiles (in total)");
697 mr_asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
698 log_it("biggielist = %s", biggielist);
699 if (!(fin = fopen(biggielist, "r"))) {
700 log_OS_error
701 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
702 } else {
703 mr_msg(4, "Reading it...");
704 for (mr_getline(&fname, &n, fin); !feof(fin);
705 mr_getline(&fname, &n, fin)) {
706 if (fname[strlen(fname) - 1] <= 32) {
707 fname[strlen(fname) - 1] = '\0';
708 }
709 if (0 == strncmp(fname, "/dev/", 5)) {
710 if (is_dev_an_NTFS_dev(fname)) {
711 tmp = find_home_of_exe("ntfsresize");
712 if (!tmp) {
713 fatal_error("ntfsresize not found");
714 }
715 mr_free(tmp);
716
717 mr_asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
718 log_it("command = %s", command);
719 tmp = call_program_and_get_last_line_of_output(command);
720 mr_free(command);
721
722 log_it("res of it = %s", tmp);
723 file_len_K = atoll(tmp) / 1024L;
724 mr_free(tmp);
725 } else {
726 file_len_K = get_phys_size_of_drive(fname) * 1024L;
727 }
728 } else {
729 /* BERLIOS: more than long here ??? */
730 file_len_K = (long) (length_of_file(fname) / 1024);
731 }
732 if (file_len_K > 0) {
733 scratchL += file_len_K;
734 mr_msg(4, "%s --> %ld K", fname, file_len_K);
735 }
736 mr_asprintf(&comment,
737 "After adding %s, scratchL+%ld now equals %ld", fname,
738 file_len_K, scratchL);
739 mr_msg(4, comment);
740 mr_free(comment);
741
742 if (feof(fin)) {
743 break;
744 }
745 }
746 mr_free(fname);
747 }
748 mr_free(biggielist);
749
750 log_it("Closing...");
751 paranoid_fclose(fin);
752 log_it("Finished calculating total size of all biggiefiles");
753 return (scratchL);
754}
755
756
757/**
758 * Determine the amount of space (in KB) occupied by a mounted CD.
759 * This can also be used to find the space used for other directories.
760 * @param mountpt The mountpoint/directory to check.
761 * @return The amount of space occupied in KB.
762 */
763long long space_occupied_by_cd(char *mountpt)
764{
765 /*@ buffer ****************************************************** */
766 char *tmp = NULL;
767 char *command = NULL;
768 long long llres;
769 size_t n = 0;
770 /*@ pointers **************************************************** */
771 char *p = NULL;
772 FILE *fin = NULL;
773
774 /*@ end vars *************************************************** */
775
776 mr_asprintf(&command, "du -sk %s", mountpt);
777 errno = 0;
778 fin = popen(command, "r");
779 if (errno) {
780 log_it("popen() FAILED: command=%s, mountpt=%s, fin=%d, errno=%d, strerror=%s", command, mountpt, fin, errno, strerror(errno));
781 llres = 0;
782 } else {
783 mr_getline(&tmp, &n, fin);
784 paranoid_pclose(fin);
785 p = strchr(tmp, '\t');
786 if (p) {
787 *p = '\0';
788 }
789 for (p = tmp, llres = 0; *p != '\0'; p++) {
790 llres *= 10;
791 llres += (int) (*p - '0');
792 }
793 }
794
795 mr_free(command);
796 mr_free(tmp);
797 return (llres);
798}
799
800
801/**
802 * Update a CRC checksum to include another character.
803 * @param crc The original CRC checksum.
804 * @param c The character to add.
805 * @return The new CRC checksum.
806 * @ingroup utilityGroup
807 */
808unsigned int updcrc(unsigned int crc, unsigned int c)
809{
810 unsigned int tmp;
811 tmp = (crc >> 8) ^ c;
812 crc = (crc << 8) ^ crctttab[tmp & 255];
813 return crc;
814}
815
816
817/**
818 * Update a reverse CRC checksum to include another character.
819 * @param crc The original CRC checksum.
820 * @param c The character to add.
821 * @return The new CRC checksum.
822 * @ingroup utilityGroup
823 */
824unsigned int updcrcr(unsigned int crc, unsigned int c)
825{
826 unsigned int tmp;
827 tmp = crc ^ c;
828 crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
829 return crc;
830}
831
832
833/**
834 * Check for an executable on the user's system; write a message to the
835 * screen and the log if we can't find it.
836 * @param fname The executable basename to look for.
837 * @return 0 if it's found, nonzero if not.
838 */
839int whine_if_not_found(char *fname)
840{
841 /*@ buffers *** */
842 char *command;
843 char *errorstr;
844 int res = 0;
845
846
847 mr_asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
848 res = system(command);
849 mr_free(command);
850
851 if (res) {
852 mr_asprintf(&errorstr,
853 _("Please install '%s'. I cannot find it on your system."),
854 fname);
855 log_to_screen(errorstr);
856 mr_free(errorstr);
857 log_to_screen
858 (_("There may be an hyperlink at http://www.mondorescue.org which"));
859 log_to_screen(_("will take you to the relevant (missing) package."));
860 return (1);
861 } else {
862 return (0);
863 }
864}
865
866
867/**
868 * Create a data file at @p fname containing @p contents.
869 * The data actually can be multiple lines, despite the name.
870 * @param fname The file to create.
871 * @param contents The data to put in it.
872 * @return 0 for success, 1 for failure.
873 */
874int write_one_liner_data_file(char *fname, char *contents)
875{
876 /*@ pointers *************************************************** */
877 FILE *fout;
878 int res = 0;
879
880 /*@ end vars *************************************************** */
881
882 assert_string_is_neither_NULL_nor_zerolength(fname);
883 if (!contents) {
884 log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
885 }
886 if (!(fout = fopen(fname, "w"))) {
887 log_it("fname=%s");
888 log_OS_error("Unable to openout fname");
889 return (1);
890 }
891 fprintf(fout, "%s\n", contents);
892 paranoid_fclose(fout);
893 return (res);
894}
895
896
897/**
898 * Read @p fname into @p contents.
899 * @param fname The file to read.
900 * @param contents Where to put its contents.
901 * @return 0 for success, nonzero for failure.
902 */
903int read_one_liner_data_file(char *fname, char *contents)
904{
905 /*@ pointers *************************************************** */
906 FILE *fin;
907 int res = 0;
908 int i;
909
910 /*@ end vars *************************************************** */
911
912 assert_string_is_neither_NULL_nor_zerolength(fname);
913 if (!contents) {
914 log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
915 }
916 if (!(fin = fopen(fname, "r"))) {
917 log_it("fname=%s", fname);
918 log_OS_error("Unable to openin fname");
919 return (1);
920 }
921 fscanf(fin, "%s\n", contents);
922 i = strlen(contents);
923 if (i > 0 && contents[i - 1] < 32) {
924 contents[i - 1] = '\0';
925 }
926 paranoid_fclose(fin);
927 return (res);
928}
929
930
931/**
932 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
933 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
934 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
935 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
936 * @param bkpinfo The backup information structure. Fields used:
937 * - @c bkpinfo->postnuke_tarball
938 * - @c bkpinfo->scratchdir
939 * - @c bkpinfo->tmpdir
940 */
941void copy_mondo_and_mindi_stuff_to_scratchdir(struct s_bkpinfo *bkpinfo)
942{
943 /*@ Char buffers ** */
944 char *command;
945 char *tmp;
946 char old_pwd[MAX_STR_LEN];
947
948 mvaddstr_and_log_it(g_currentY, 0,
949 "Copying Mondo's core files to the scratch directory");
950
951 /* BERLIOS: Why do we need to do it here as well ? */
952 mr_msg(4, "g_mondo_home='%s'", g_mondo_home);
953 if ((g_mondo_home == NULL) || strlen(g_mondo_home) < 2) {
954 mr_free(g_mondo_home);
955 g_mondo_home = find_and_store_mondoarchives_home();
956 }
957 mr_asprintf(&command, CP_BIN " --parents -pRdf %s %s", g_mondo_home,
958 bkpinfo->scratchdir);
959
960 mr_msg(4, "command = %s", command);
961 if (run_program_and_log_output(command, 1)) {
962 fatal_error("Failed to copy Mondo's stuff to scratchdir");
963 }
964 mr_free(command);
965
966 mr_asprintf(&tmp, "%s/payload.tgz", g_mondo_home);
967
968 /* i18n */
969 mr_asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
970 mr_msg(4, "command = %s", command);
971 run_program_and_log_output(command, 1);
972 mr_free(command);
973
974 if (does_file_exist(tmp)) {
975 log_it("Untarring payload %s to scratchdir %s", tmp,
976 bkpinfo->scratchdir);
977 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
978 chdir(bkpinfo->scratchdir);
979 mr_asprintf(&command, "tar -zxvf %s", tmp);
980 if (run_program_and_log_output(command, FALSE)) {
981 fatal_error("Failed to untar payload");
982 }
983 mr_free(command);
984 chdir(old_pwd);
985 }
986 mr_free(tmp);
987
988 mr_asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
989 bkpinfo->scratchdir);
990 if (run_program_and_log_output(command, FALSE)) {
991 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
992 }
993 mr_free(command);
994
995 tmp = call_program_and_get_last_line_of_output("which mondorestore");
996 if (!tmp) {
997 fatal_error
998 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
999 }
1000 mr_asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
1001 mr_free(tmp);
1002
1003 if (run_program_and_log_output(command, FALSE)) {
1004 fatal_error("Failed to copy mondorestore to tmpdir");
1005 }
1006 mr_free(command);
1007
1008 mr_asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1009 paranoid_system(command);
1010 mr_free(command);
1011
1012 if (bkpinfo->postnuke_tarball) {
1013 mr_asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1014 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1015 if (run_program_and_log_output(command, FALSE)) {
1016 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1017 }
1018 mr_free(command);
1019 }
1020
1021 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1022}
1023
1024
1025/**
1026 * Store the client's NFS configuration in files to be restored at restore-time.
1027 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1028 * @param bkpinfo The backup information structure. Fields used:
1029 * - @c nfs_mount
1030 * - @c nfs_remote_dir
1031 * - @c tmpdir
1032 */
1033void store_nfs_config(struct s_bkpinfo *bkpinfo)
1034{
1035
1036 /*@ buffers ******** */
1037 char *nfs_dev = NULL;
1038 char *mac_addr = NULL;
1039 char *nfs_mount = NULL;
1040 char *nfs_client_ipaddr = NULL;
1041 char *nfs_client_netmask = NULL;
1042 char *nfs_client_broadcast = NULL;
1043 char *nfs_client_defgw = NULL;
1044 char *nfs_server_ipaddr = NULL;
1045 char *tmp = NULL;
1046 char *command = NULL;
1047
1048 FILE *fd1 = NULL;
1049
1050 /*@ pointers ***** */
1051 char *p;
1052
1053 log_it("Storing NFS configuration");
1054 mr_asprintf(&tmp, bkpinfo->nfs_mount);
1055 p = strchr(tmp, ':');
1056 if (!p) {
1057 fatal_error
1058 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1059 }
1060 *(p++) = '\0';
1061 mr_asprintf(&nfs_server_ipaddr, tmp);
1062 mr_free(tmp);
1063
1064 mr_asprintf(&nfs_mount, p);
1065 /* BERLIOS : there is a bug #67 here as it only considers the first NIC */
1066 mr_asprintf(&command,
1067 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1068 nfs_dev = call_program_and_get_last_line_of_output(command);
1069 mr_free(command);
1070
1071 mr_asprintf(&command,
1072 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1073 nfs_client_ipaddr = call_program_and_get_last_line_of_output(command);
1074 mr_free(command);
1075
1076 mr_asprintf(&command,
1077 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1078 nfs_client_netmask = call_program_and_get_last_line_of_output(command);
1079 mr_free(command);
1080
1081 mr_asprintf(&command,
1082 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1083 nfs_client_broadcast = call_program_and_get_last_line_of_output(command);
1084 mr_free(command);
1085
1086 mr_asprintf(&command,
1087 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1088 nfs_client_defgw = call_program_and_get_last_line_of_output(command);
1089 mr_free(command);
1090
1091 mr_asprintf(&tmp,
1092 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1093 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1094 mr_free(nfs_mount);
1095 log_it(tmp);
1096 mr_free(tmp);
1097
1098 if (strlen(nfs_dev) < 2) {
1099 fatal_error
1100 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1101 }
1102 /********
1103 * If the NFS device that found above is a bonded device,
1104 * we need to replace it with an ethN device or the
1105 * networking will not start during an NFS restore.
1106 *
1107 * If the NFS device in nfs_dev begins with the word "bond",
1108 * look for the corresponding slave ethN device and copy it to nfs_dev.
1109 * Using the common MAC address
1110 ********/
1111 if (!strncmp(nfs_dev, "bond", 4)) {
1112 log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1113 mr_asprintf(&command,
1114 "ifconfig %s | awk '{print $5}' | head -n1", nfs_dev);
1115 mac_addr = call_program_and_get_last_line_of_output(command);
1116 mr_asprintf(&command,
1117 "ifconfig | grep -E '%s' | grep -v '%s' | head -n1 | cut -d' ' -f1", mac_addr);
1118 mr_free(nfs_dev);
1119 nfs_dev = call_program_and_get_last_line_of_output(command);
1120 mr_free(command);
1121 mr_free(mac_addr);
1122
1123 log_to_screen("Replacing it with %s\n", nfs_dev);
1124 }
1125
1126 mr_free(nfs_dev);
1127 mr_free(tmp);
1128
1129 fd1 = mr_fopen(MONDORESTORECFG, "a");
1130 mr_fprintf(fd1, "nfs-dev %s\n", nfs_dev);
1131 mr_fprintf(fd1, "nfs-client-ipaddr %s\n", nfs_client_ipaddr);
1132 mr_fprintf(fd1, "nfs-client-netmask %s\n", nfs_client_netmask);
1133 mr_fprintf(fd1, "nfs-client-broadcast %s\n", nfs_client_broadcast);
1134 mr_fprintf(fd1, "nfs-client-defgw %s\n", nfs_client_defgw);
1135 mr_fprintf(fd1, "nfs-server-ipaddr %s\n", nfs_server_ipaddr);
1136 mr_fprintf(fd1, "nfs-server-mount %s\n", bkpinfo->nfs_mount);
1137 mr_fprintf(fd1, "nfs-server-path %s\n", bkpinfo->nfs_remote_dir);
1138 mr_fprintf(fd1, "iso-prefix %s\n", bkpinfo->prefix);
1139 mr_fclose(fd1);
1140
1141 log_it("Finished storing NFS configuration");
1142}
1143
1144
1145/**
1146 * Determine the approximate number of media that the backup will take up,
1147 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1148 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1149 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1150 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1151 * If there are more than 50 media estimated, the estimate will not be shown.
1152 * @param bkpinfo The backup information structure. Fields used:
1153 * - @c bkpinfo->backup_media_type
1154 * - @c bkpinfo->image_devs
1155 * - @c bkpinfo->media_size
1156 * - @c bkpinfo->optimal_set_size
1157 * - @c bkpinfo->use_lzo
1158 * @param noof_sets The number of filesets created.
1159 * @ingroup archiveGroup
1160 */
1161void
1162estimate_noof_media_required(struct s_bkpinfo *bkpinfo, long noof_sets)
1163{
1164 /*@ buffers *************** */
1165 char *tmp = NULL;
1166
1167 /*@ long long ************* */
1168 long long scratchLL;
1169
1170 if (bkpinfo->media_size[1] <= 0 || bkpinfo->backup_media_type == nfs) {
1171 log_to_screen("Number of media required: UNKNOWN");
1172 return;
1173 }
1174
1175 log_it("Estimating number of media required...");
1176 scratchLL =
1177 (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1178 + (long long) (size_of_all_biggiefiles_K(bkpinfo));
1179 scratchLL = (scratchLL / 1024) / bkpinfo->media_size[1];
1180 scratchLL++;
1181 if (bkpinfo->use_lzo) {
1182 scratchLL = (scratchLL * 2) / 3;
1183 } else if (bkpinfo->use_gzip) {
1184 scratchLL = (scratchLL * 2) / 3;
1185 } else {
1186 scratchLL = scratchLL / 2;
1187 }
1188 if (!scratchLL) {
1189 scratchLL++;
1190 }
1191 if (scratchLL <= 1) {
1192 mr_asprintf(&tmp,
1193 _("Your backup will probably occupy a single %s. Maybe two."),
1194 bkpinfo->backup_media_string);
1195 } else {
1196 mr_asprintf(&tmp, _("Your backup will occupy approximately %s media."),
1197 number_to_text((int) (scratchLL + 1)));
1198 }
1199 if (!bkpinfo->image_devs && (scratchLL < 50)) {
1200 log_to_screen(tmp);
1201 }
1202 mr_free(tmp);
1203 return;
1204}
1205
1206
1207/**
1208 * Determine whether a file is compressed. This is done
1209 * by reading through the "do-not-compress-these" file distributed with Mondo.
1210 * @param filename The file to check.
1211 * @return TRUE if it's compressed, FALSE if not.
1212 */
1213bool is_this_file_compressed(char *filename)
1214{
1215 char *do_not_compress_these = NULL;
1216 char *tmp = NULL;
1217 char *p = NULL;
1218
1219 mr_asprintf(&tmp, "%s/do-not-compress-these", g_mondo_home);
1220 if (!does_file_exist(tmp)) {
1221 mr_free(tmp);
1222 return (FALSE);
1223 }
1224 mr_free(tmp);
1225
1226 do_not_compress_these = last_line_of_file(tmp);
1227 for (p = do_not_compress_these; p != NULL; p++) {
1228 mr_asprintf(&tmp, p);
1229 if (strchr(tmp, ' ')) {
1230 *(strchr(tmp, ' ')) = '\0';
1231 }
1232 if (!strcmp(strrchr(filename, '.'), tmp)) {
1233 mr_free(do_not_compress_these);
1234 mr_free(tmp);
1235 return (TRUE);
1236 }
1237 mr_free(tmp);
1238
1239 if (!(p = strchr(p, ' '))) {
1240 break;
1241 }
1242 }
1243 mr_free(do_not_compress_these);
1244 return (FALSE);
1245}
1246
1247
1248int mode_of_file(char *fname)
1249{
1250 struct stat buf;
1251
1252 if (lstat(fname, &buf)) {
1253 return (-1);
1254 } // error
1255 else {
1256 return (buf.st_mode);
1257 }
1258}
1259
1260
1261/**
1262 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1263 * @param outfile Where to put the script.
1264 * @return 0 for success, 1 for failure.
1265 */
1266int make_grub_install_scriptlet(char *outfile)
1267{
1268 FILE *fout;
1269 char *tmp;
1270 int retval = 0;
1271
1272 if ((fout = fopen(outfile, "w"))) {
1273 fprintf(fout,
1274 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1275 paranoid_fclose(fout);
1276 mr_msg(2, "Created %s", outfile);
1277 mr_asprintf(&tmp, "chmod +x %s", outfile);
1278 paranoid_system(tmp);
1279 mr_free(tmp);
1280
1281 retval = 0;
1282 } else {
1283 retval = 1;
1284 }
1285 return (retval);
1286}
1287
1288/* @} - end fileGroup */
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