source: MondoRescue/branches/stable/mondo/src/common/libmondo-files.c@ 1769

Last change on this file since 1769 was 1769, checked in by Bruno Cornec, 16 years ago

Continue on configuration file items (compression)
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1/* libmondo-files.c file manipulation
2 $Id: libmondo-files.c 1769 2007-11-06 00:37:38Z bruno $
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
21#include "mr_mem.h"
22#include "mr_msg.h"
23#include "mr_file.h"
24#include "mr_gettext.h"
25
26/*@unused@*/
27//static char cvsid[] = "$Id: libmondo-files.c 1769 2007-11-06 00:37:38Z bruno $";
28
29extern char err_log_lines[NOOF_ERR_LINES][MAX_STR_LEN];
30
31extern int g_currentY;
32
33/* Reference to global bkpinfo */
34extern struct s_bkpinfo *bkpinfo;
35
36/**
37 * @addtogroup fileGroup
38 * @{
39 */
40/**
41 * Get an md5 checksum of the specified file.
42 * @param filename The file to checksum.
43 * @return The 32-character ASCII representation of the 128-bit checksum.
44 * @note The returned string points to static storage that will be overwritten with each call.
45 */
46char *calc_checksum_of_file(char *filename)
47{
48 /*@ buffers ***************************************************** */
49 static char output[MAX_STR_LEN];
50
51 char *command = NULL;
52 char *tmp = NULL;
53
54 /*@ pointers **************************************************** */
55 char *p;
56 FILE *fin;
57
58 /*@ initialize pointers ***************************************** */
59
60 p = output;
61
62 /*@************************************************************** */
63
64 assert_string_is_neither_NULL_nor_zerolength(filename);
65
66 if (does_file_exist(filename)) {
67 mr_asprintf(&command, "md5sum \"%s\"", filename);
68 fin = popen(command, "r");
69 mr_free(command);
70
71 if (fin) {
72 (void) fgets(output, MAX_STR_LEN, fin);
73 p = strchr(output, ' ');
74 paranoid_pclose(fin);
75 }
76 } else {
77 mr_asprintf(&tmp, "File '%s' not found; cannot calc checksum",
78 filename);
79 log_it(tmp);
80 mr_free(tmp);
81 }
82 if (p) {
83 *p = '\0';
84 }
85 return (output);
86}
87
88
89/**
90 * Get the number of lines in @p filename.
91 * @param filename The file to count lines in.
92 * @return The number of lines in @p filename.
93 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
94 */
95long count_lines_in_file(char *filename)
96{
97
98 /*@ buffers ***************************************************** */
99 char *command = NULL;
100 char *incoming = NULL;
101 char *tmp = NULL;
102
103 /*@ long ******************************************************** */
104 long noof_lines = -1L;
105
106 /*@ int ******************************************************** */
107 size_t n = 0;
108
109 /*@ pointers **************************************************** */
110 FILE *fin;
111
112 assert_string_is_neither_NULL_nor_zerolength(filename);
113 if (!does_file_exist(filename)) {
114 mr_asprintf(&tmp,
115 "%s does not exist, so I cannot found the number of lines in it",
116 filename);
117 log_it(tmp);
118 mr_free(tmp);
119 return (0);
120 }
121 mr_asprintf(&command, "cat %s | wc -l", filename);
122 if (!does_file_exist(filename)) {
123 return (-1);
124 }
125 fin = popen(command, "r");
126 mr_free(command);
127
128 if (fin) {
129 if (feof(fin)) {
130 noof_lines = 0;
131 } else {
132 mr_getline(&incoming, &n, fin);
133 while (strlen(incoming) > 0
134 && incoming[strlen(incoming) - 1] < 32) {
135 incoming[strlen(incoming) - 1] = '\0';
136 }
137 noof_lines = atol(incoming);
138 mr_free(incoming);
139 }
140 paranoid_pclose(fin);
141 }
142 return (noof_lines);
143}
144
145
146/**
147 * Check for existence of given @p filename.
148 * @param filename The file to check for.
149 * @return TRUE if it exists, FALSE otherwise.
150 */
151bool does_file_exist(char *filename)
152{
153
154 /*@ structures ************************************************** */
155 struct stat buf;
156
157 /*@************************************************************** */
158
159 assert(filename != NULL);
160
161 if (lstat(filename, &buf)) {
162 mr_msg(20, "%s does not exist", filename);
163 return (FALSE);
164 } else {
165 mr_msg(20, "%s exists", filename);
166 return (TRUE);
167 }
168}
169
170
171/**
172 * Modify @p inout (a file containing a list of files) to only contain files
173 * that exist.
174 * @param inout The filelist to operate on.
175 * @note The original file is renamed beforehand, so it will not be accessible
176 * while the modification is in progress.
177 */
178void exclude_nonexistent_files(char *inout)
179{
180 char *infname = NULL;
181 char *outfname = NULL;
182 char *tmp = NULL;
183 char *incoming = NULL;
184
185 /*@ int ********************************************************* */
186 int i;
187 size_t n = 0;
188
189 /*@ pointers **************************************************** */
190 FILE *fin, *fout;
191
192
193 /*@ end vars *********************************************************** */
194
195 assert_string_is_neither_NULL_nor_zerolength(inout);
196
197 mr_asprintf(&infname, "%s.in", inout);
198
199 mr_asprintf(&tmp, "cp -f %s %s", inout, infname);
200 run_program_and_log_output(tmp, FALSE);
201 mr_free(tmp);
202
203 if (!(fin = fopen(infname, "r"))) {
204 log_OS_error("Unable to openin infname");
205 mr_free(infname);
206 return;
207 }
208
209 mr_asprintf(&outfname, "%s", inout);
210 if (!(fout = fopen(outfname, "w"))) {
211 log_OS_error("Unable to openout outfname");
212 mr_free(infname);
213 mr_free(outfname);
214 return;
215 }
216 mr_free(outfname);
217
218 for (mr_getline(&incoming, &n, fin); !feof(fin);
219 mr_getline(&incoming, &n, fin)) {
220 i = strlen(incoming) - 1;
221 if (i >= 0 && incoming[i] < 32) {
222 incoming[i] = '\0';
223 }
224 if (does_file_exist(incoming)) {
225 fprintf(fout, "%s\n", incoming);
226 } else {
227 mr_asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
228 log_it(tmp);
229 mr_free(tmp);
230 }
231 }
232 mr_free(incoming);
233 paranoid_fclose(fout);
234 paranoid_fclose(fin);
235 unlink(infname);
236 mr_free(infname);
237}
238
239
240/**
241 * Attempt to find the user's kernel by calling Mindi.
242 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
243 * don't do anything.
244 * @param kernel Where to put the found kernel.
245 * @return 0 for success, 1 for failure.
246 */
247int figure_out_kernel_path_interactively_if_necessary(char *kernel)
248{
249 char *tmp = NULL;
250 char *command = NULL;
251
252 if (kernel == NULL) {
253 mr_allocstr(kernel,
254 call_program_and_get_last_line_of_output
255 ("mindi --findkernel 2> /dev/null"));
256 }
257 // If we didn't get anything back, check whether mindi raised a fatal error
258 if (kernel == NULL) {
259 mr_asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
260 mr_asprintf(&tmp, call_program_and_get_last_line_of_output(command));
261 if (strlen(tmp) > 1) {
262 popup_and_OK(tmp);
263 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
264 }
265 mr_free(command);
266 mr_free(tmp);
267 }
268 log_it("Calling Mindi with kernel path of '%s'", kernel);
269 while (kernel == NULL) {
270 if (!ask_me_yes_or_no
271 ("Kernel not found or invalid. Choose another?")) {
272 return (1);
273 }
274 if (!popup_and_get_string
275 ("Kernel path",
276 "What is the full path and filename of your kernel, please?",
277 kernel, MAX_STR_LEN / 4)) {
278 fatal_error
279 ("Kernel not found. Please specify with the '-k' flag.");
280 }
281 log_it("User says kernel is at %s", kernel);
282 }
283 return (0);
284}
285
286
287/**
288 * Find location of specified executable in user's PATH.
289 * @param fname The basename of the executable to search for (e.g. @c afio).
290 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
291 * @note The returned string points to static storage that will be overwritten with each call.
292 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
293 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
294 * to nothing.
295 */
296char *find_home_of_exe(char *fname)
297{
298 /*@ buffers ********************* */
299 static char output[MAX_STR_LEN];
300 char *incoming;
301 char *command = NULL;
302
303 malloc_string(incoming);
304 incoming[0] = '\0';
305 /*@******************************* */
306
307 assert_string_is_neither_NULL_nor_zerolength(fname);
308
309 mr_asprintf(&command, "which %s 2> /dev/null", fname);
310 strcpy(incoming, call_program_and_get_last_line_of_output(command));
311 mr_free(command);
312
313 if (incoming[0] == '\0') {
314 if (system("which file > /dev/null 2> /dev/null")) {
315 mr_free(incoming);
316 mr_free(command);
317 output[0] = '\0';
318 return (NULL); // forget it :)
319 }
320 mr_asprintf(&command,
321 "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
322 incoming);
323 strcpy(incoming,
324 call_program_and_get_last_line_of_output(command));
325 mr_free(command);
326 }
327 if (incoming[0] == '\0') // yes, it is == '\0' twice, not once :)
328 {
329 mr_asprintf(&command, "dirname %s 2> /dev/null", incoming);
330 strcpy(incoming,
331 call_program_and_get_last_line_of_output(command));
332 mr_free(command);
333 }
334 strcpy(output, incoming);
335 if (output[0] != '\0' && does_file_exist(output)) {
336 mr_msg(4, "find_home_of_exe () --- Found %s at %s", fname,
337 incoming);
338 } else {
339 output[0] = '\0';
340 mr_msg(4, "find_home_of_exe() --- Could not find %s", fname);
341 }
342 mr_free(incoming);
343 if (!output[0]) {
344 return (NULL);
345 } else {
346 return (output);
347 }
348}
349
350
351/**
352 * Get the last sequence of digits surrounded by non-digits in the first 32k of
353 * a file.
354 * @param logfile The file to look in.
355 * @return The number found, or 0 if none.
356 */
357int get_trackno_from_logfile(char *logfile)
358{
359
360 /*@ pointers ********************************************************* */
361 FILE *fin;
362
363 /*@ int ************************************************************** */
364 int trackno = 0;
365 size_t len = 0;
366
367 /*@ buffer ************************************************************ */
368 char datablock[32701];
369
370 assert_string_is_neither_NULL_nor_zerolength(logfile);
371
372 if (!(fin = fopen(logfile, "r"))) {
373 log_OS_error("Unable to open logfile");
374 fatal_error("Unable to open logfile to read trackno");
375 }
376 len = fread(datablock, 1, 32700, fin);
377 paranoid_fclose(fin);
378 if (len <= 0) {
379 return (0);
380 }
381 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
382 datablock[len--] = '\0';
383 for (; len > 0 && isdigit(datablock[len - 1]); len--);
384 trackno = atoi(datablock + len);
385 return (trackno);
386}
387
388
389/**
390 * Get a percentage from the last line of @p filename. We look for the string
391 * "% done" on the last line and, if we find it, grab the number before the last % sign.
392 * @param filename The file to get the percentage from.
393 * @return The percentage found, or 0 for error.
394 */
395int grab_percentage_from_last_line_of_file(char *filename)
396{
397
398 char *lastline = NULL;
399 char *command = NULL;
400 char *p = NULL;
401 int i;
402
403 malloc_string(lastline);
404 for (i = NOOF_ERR_LINES - 1;
405 i >= 0 && !strstr(err_log_lines[i], "% Done")
406 && !strstr(err_log_lines[i], "% done"); i--);
407 if (i < 0) {
408 mr_asprintf(&command,
409 "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
410 filename, '%');
411 strcpy(lastline,
412 call_program_and_get_last_line_of_output(command));
413 mr_free(command);
414 if (!lastline[0]) {
415 return (0);
416 }
417 } else {
418 strcpy(lastline, err_log_lines[i]);
419 }
420
421 p = strrchr(lastline, '%');
422 if (p) {
423 *p = '\0';
424 }
425 if (!p) {
426 return (0);
427 }
428 *p = '\0';
429 for (p--; *p != ' ' && p != lastline; p--);
430 if (p != lastline) {
431 p++;
432 }
433 i = atoi(p);
434
435 return (i);
436}
437
438
439/**
440 * Return the last line of @p filename.
441 * @param filename The file to get the last line of.
442 * @return The last line of the file.
443 * @note The returned string points to static storage that will be overwritten with each call.
444 */
445char *last_line_of_file(char *filename)
446{
447 /*@ buffers ***************************************************** */
448 static char output[MAX_STR_LEN];
449 char *command = NULL;
450 char *tmp = NULL;
451
452 /*@ pointers **************************************************** */
453 FILE *fin;
454
455 /*@ end vars **************************************************** */
456
457 if (!does_file_exist(filename)) {
458 mr_asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
459 filename);
460 log_it(tmp);
461 mr_free(tmp);
462 output[0] = '\0';
463 return (output);
464 }
465 mr_asprintf(&command, "tail -n1 %s", filename);
466 fin = popen(command, "r");
467 mr_free(command);
468
469 (void) fgets(output, MAX_STR_LEN, fin);
470 paranoid_pclose(fin);
471 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
472 output[strlen(output) - 1] = '\0';
473 }
474 return (output);
475}
476
477
478/**
479 * Get the length of @p filename in bytes.
480 * @param filename The file to get the length of.
481 * @return The length of the file, or -1 for error.
482 */
483off_t length_of_file(char *filename)
484{
485 /*@ pointers *************************************************** */
486 FILE *fin;
487
488 /*@ long long ************************************************* */
489 off_t length;
490
491 fin = fopen(filename, "r");
492 if (!fin) {
493 log_it("filename=%s", filename);
494 log_OS_error("Unable to openin filename");
495 return (-1);
496 }
497 fseeko(fin, 0, SEEK_END);
498 length = ftello(fin);
499 paranoid_fclose(fin);
500 return (length);
501}
502
503
504/**
505 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
506 * @param outdir_fname The directory to create.
507 * @return The return value of @c mkdir.
508 */
509/* BERLIOS: This function shouldn't call system at all */
510int make_hole_for_dir(char *outdir_fname)
511{
512 char *tmp;
513 int res = 0;
514
515 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
516 mr_asprintf(&tmp, "mkdir -p %s", outdir_fname);
517 res = system(tmp);
518 mr_free(tmp);
519 return (res);
520}
521
522
523/**
524 * Create the parent directories of @p outfile_fname.
525 * @param outfile_fname The file to make a "hole" for.
526 * @return 0, always.
527 * @bug Return value unnecessary.
528 */
529/* BERLIOS: This function shouldn't call system at all */
530int make_hole_for_file(char *outfile_fname)
531{
532 /*@ buffer ****************************************************** */
533 char *command;
534
535 /*@ int ******************************************************** */
536 int res = 0;
537
538 /*@ end vars *************************************************** */
539
540 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
541 assert(!strstr(outfile_fname, MNT_CDROM));
542 assert(!strstr(outfile_fname, "/dev/cdrom"));
543
544 mr_asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
545 res += system(command);
546 mr_free(command);
547
548 mr_asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
549 res += system(command);
550 mr_free(command);
551
552 mr_asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
553 res += system(command);
554 mr_free(command);
555 unlink(outfile_fname);
556 return (0);
557}
558
559
560/**
561 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
562 * @param filelist_fname The file to search through.
563 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
564 * @return The number of lines matched.
565 */
566long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
567{
568 /*@ long ******************************************************* */
569 long matches = 0;
570
571 /*@ pointers *************************************************** */
572 FILE *fin;
573
574 /*@ buffers **************************************************** */
575 char *incoming = NULL;
576
577 size_t n = 0;
578 /*@ end vars *************************************************** */
579
580
581 fin = fopen(filelist_fname, "r");
582
583 if (!fin) {
584 log_OS_error("Unable to openin filelist_fname");
585 return (0);
586 }
587 mr_getline(&incoming, &n, fin);
588 while (!feof(fin)) {
589 if (strstr(incoming, wildcard)) {
590 matches++;
591 }
592 mr_getline(&incoming, &n, fin);
593 }
594 paranoid_fclose(fin);
595 mr_free(incoming);
596 return (matches);
597}
598
599
600/**
601 * Register our PID in a file in /var/run.
602 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
603 * @param pid 0 to remove file, anything else to create it.
604 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
605 * @note This function does not provide support against multiple instances, unless you check for that yourself.
606 */
607void register_pid(pid_t pid, char *name_str)
608{
609 char *tmp = NULL;
610 char *lockfile_fname = NULL;
611 int res;
612 size_t n = 0;
613 FILE *fin;
614
615 mr_asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
616 if (!pid) {
617 log_it("Unregistering PID");
618 if (unlink(lockfile_fname)) {
619 log_it("Error unregistering PID");
620 }
621 mr_free(lockfile_fname);
622 return;
623 }
624 if (does_file_exist(lockfile_fname)) {
625 if ((fin = fopen(lockfile_fname, "r"))) {
626 mr_getline(&tmp, &n, fin);
627 paranoid_fclose(fin);
628 } else {
629 log_OS_error("Unable to openin lockfile_fname");
630 }
631 pid = (pid_t) atol(tmp);
632 mr_free(tmp);
633
634 mr_asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
635 res = system(tmp);
636 mr_free(tmp);
637 if (!res) {
638 log_it
639 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
640 lockfile_fname);
641 }
642 }
643 mr_asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
644 lockfile_fname);
645 mr_free(lockfile_fname);
646
647 if (system(tmp)) {
648 fatal_error("Cannot register PID");
649 }
650 mr_free(tmp);
651 return;
652}
653
654
655/**
656 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
657 * @param tmpdir The tempdir where the mountlist is stored.
658 * @param dev The device to search for.
659 * @return The size of the partition in KB.
660 */
661long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
662{
663 char *command = NULL;
664 char *sz_res = NULL;
665 long file_len_K = 0L;
666
667 mr_asprintf(&command,
668 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
669 dev, tmpdir);
670 log_it(command);
671 mr_asprintf(&sz_res, call_program_and_get_last_line_of_output(command));
672 file_len_K = atol(sz_res);
673 mr_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
674 mr_free(command);
675 mr_free(sz_res);
676 return (file_len_K);
677}
678
679
680/**
681 * Calculate the total size (in KB) of all the biggiefiles in this backup.
682 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
683 * @return The total size of all biggiefiles in KB.
684 */
685long size_of_all_biggiefiles_K()
686{
687 char *fname = NULL;
688 char *biggielist = NULL;
689 char *comment = NULL;
690 char *tmp = NULL;
691 char *command = NULL;
692
693 /*@ long ******************************************************** */
694 long scratchL = 0L;
695 long file_len_K = 0L;
696
697 /*@ pointers *************************************************** */
698 FILE *fin = NULL;
699 size_t n = 0;
700
701 /*@ end vars *************************************************** */
702
703 malloc_string(tmp);
704 log_it("Calculating size of all biggiefiles (in total)");
705 mr_asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
706 log_it("biggielist = %s", biggielist);
707 if (!(fin = fopen(biggielist, "r"))) {
708 log_OS_error
709 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
710 } else {
711 mr_msg(4, "Reading it...");
712 for (mr_getline(&fname, &n, fin); !feof(fin);
713 mr_getline(&fname, &n, fin)) {
714 if (fname[strlen(fname) - 1] <= 32) {
715 fname[strlen(fname) - 1] = '\0';
716 }
717 if (0 == strncmp(fname, "/dev/", 5)) {
718 if (is_dev_an_NTFS_dev(fname)) {
719 if ( !find_home_of_exe("ntfsresize")) {
720 fatal_error("ntfsresize not found");
721 }
722 mr_asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
723 log_it("command = %s", command);
724 strcpy (tmp, call_program_and_get_last_line_of_output(command));
725 mr_free(command);
726
727 log_it("res of it = %s", tmp);
728 file_len_K = atoll(tmp) / 1024L;
729 } else {
730 file_len_K = get_phys_size_of_drive(fname) * 1024L;
731 }
732 } else {
733 /* BERLIOS: more than long here ??? */
734 file_len_K = (long) (length_of_file(fname) / 1024);
735 }
736 if (file_len_K > 0) {
737 scratchL += file_len_K;
738 mr_msg(4, "%s --> %ld K", fname, file_len_K);
739 }
740 mr_asprintf(&comment,
741 "After adding %s, scratchL+%ld now equals %ld", fname,
742 file_len_K, scratchL);
743 mr_msg(4, comment);
744 mr_free(comment);
745
746 if (feof(fin)) {
747 break;
748 }
749 }
750 mr_free(fname);
751 }
752 mr_free(biggielist);
753
754 log_it("Closing...");
755 paranoid_fclose(fin);
756 log_it("Finished calculating total size of all biggiefiles");
757 mr_free(tmp);
758 return (scratchL);
759}
760
761/**
762 * Determine the amount of space (in KB) occupied by a mounted CD.
763 * This can also be used to find the space used for other directories.
764 * @param mountpt The mountpoint/directory to check.
765 * @return The amount of space occupied in KB.
766 */
767long long space_occupied_by_cd(char *mountpt)
768{
769 /*@ buffer ****************************************************** */
770 char *tmp = NULL;
771 char *command = NULL;
772 long long llres;
773 size_t n = 0;
774 /*@ pointers **************************************************** */
775 char *p = NULL;
776 FILE *fin = NULL;
777
778 /*@ end vars *************************************************** */
779
780 mr_asprintf(&command, "du -sk %s", mountpt);
781 errno = 0;
782 fin = popen(command, "r");
783 if (errno) {
784 log_it("popen() FAILED: command=%s, mountpt=%s, fin=%d, errno=%d, strerror=%s", command, mountpt, fin, errno, strerror(errno));
785 llres = 0;
786 } else {
787 mr_getline(&tmp, &n, fin);
788 paranoid_pclose(fin);
789 p = strchr(tmp, '\t');
790 if (p) {
791 *p = '\0';
792 }
793 for (p = tmp, llres = 0; *p != '\0'; p++) {
794 llres *= 10;
795 llres += (int) (*p - '0');
796 }
797 }
798
799 mr_free(command);
800 mr_free(tmp);
801 return (llres);
802}
803
804
805/**
806 * Update a CRC checksum to include another character.
807 * @param crc The original CRC checksum.
808 * @param c The character to add.
809 * @return The new CRC checksum.
810 * @ingroup utilityGroup
811 */
812unsigned int updcrc(unsigned int crc, unsigned int c)
813{
814 unsigned int tmp;
815 tmp = (crc >> 8) ^ c;
816 crc = (crc << 8) ^ crctttab[tmp & 255];
817 return crc;
818}
819
820
821/**
822 * Update a reverse CRC checksum to include another character.
823 * @param crc The original CRC checksum.
824 * @param c The character to add.
825 * @return The new CRC checksum.
826 * @ingroup utilityGroup
827 */
828unsigned int updcrcr(unsigned int crc, unsigned int c)
829{
830 unsigned int tmp;
831 tmp = crc ^ c;
832 crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
833 return crc;
834}
835
836
837/**
838 * Check for an executable on the user's system; write a message to the
839 * screen and the log if we can't find it.
840 * @param fname The executable basename to look for.
841 * @return 0 if it's found, nonzero if not.
842 */
843int whine_if_not_found(char *fname)
844{
845 /*@ buffers *** */
846 char *command;
847 char *errorstr;
848 int res = 0;
849
850
851 mr_asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
852 res = system(command);
853 mr_free(command);
854
855 if (res) {
856 mr_asprintf(&errorstr,
857 _("Please install '%s'. I cannot find it on your system."),
858 fname);
859 log_to_screen(errorstr);
860 mr_free(errorstr);
861 log_to_screen
862 (_("There may be an hyperlink at http://www.mondorescue.org which"));
863 log_to_screen(_("will take you to the relevant (missing) package."));
864 return (1);
865 } else {
866 return (0);
867 }
868}
869
870
871/**
872 * Create a data file at @p fname containing @p contents.
873 * The data actually can be multiple lines, despite the name.
874 * @param fname The file to create.
875 * @param contents The data to put in it.
876 * @return 0 for success, 1 for failure.
877 */
878int write_one_liner_data_file(char *fname, char *contents)
879{
880 /*@ pointers *************************************************** */
881 FILE *fout;
882 int res = 0;
883
884 /*@ end vars *************************************************** */
885
886 assert_string_is_neither_NULL_nor_zerolength(fname);
887 if (!contents) {
888 log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
889 }
890 if (!(fout = fopen(fname, "w"))) {
891 log_it("fname=%s");
892 log_OS_error("Unable to openout fname");
893 return (1);
894 }
895 fprintf(fout, "%s\n", contents);
896 paranoid_fclose(fout);
897 return (res);
898}
899
900
901/**
902 * Read @p fname into @p contents.
903 * @param fname The file to read.
904 * @param contents Where to put its contents.
905 * @return 0 for success, nonzero for failure.
906 */
907int read_one_liner_data_file(char *fname, char *contents)
908{
909 /*@ pointers *************************************************** */
910 FILE *fin;
911 int res = 0;
912 int i;
913
914 /*@ end vars *************************************************** */
915
916 assert_string_is_neither_NULL_nor_zerolength(fname);
917 if (!contents) {
918 log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
919 }
920 if (!(fin = fopen(fname, "r"))) {
921 log_it("fname=%s", fname);
922 log_OS_error("Unable to openin fname");
923 return (1);
924 }
925 fscanf(fin, "%s\n", contents);
926 i = strlen(contents);
927 if (i > 0 && contents[i - 1] < 32) {
928 contents[i - 1] = '\0';
929 }
930 paranoid_fclose(fin);
931 return (res);
932}
933
934
935/**
936 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
937 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
938 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
939 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
940 * @param bkpinfo The backup information structure. Fields used:
941 * - @c bkpinfo->postnuke_tarball
942 * - @c bkpinfo->scratchdir
943 * - @c bkpinfo->tmpdir
944 */
945void copy_mondo_and_mindi_stuff_to_scratchdir()
946{
947 /*@ Char buffers ** */
948 char *command = NULL;
949 char *tmp = NULL;
950 char old_pwd[MAX_STR_LEN];
951
952 mvaddstr_and_log_it(g_currentY, 0,
953 "Copying Mondo's core files to the scratch directory");
954
955 /* BERLIOS: Why do we need to do it here as well ? */
956 mr_asprintf(&command, CP_BIN " --parents -pRdf %s %s", MONDO_SHARE,
957 bkpinfo->scratchdir);
958
959 mr_msg(4, "command = %s", command);
960 if (run_program_and_log_output(command, 1)) {
961 fatal_error("Failed to copy Mondo's stuff to scratchdir");
962 }
963 mr_free(command);
964
965 /* i18n */
966 mr_asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
967 mr_msg(4, "command = %s", command);
968 run_program_and_log_output(command, 1);
969 mr_free(command);
970
971 mr_asprintf(&tmp, "%s/payload.tgz", MONDO_SHARE);
972 if (does_file_exist(tmp)) {
973 log_it("Untarring payload %s to scratchdir %s", tmp,
974 bkpinfo->scratchdir);
975 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
976 chdir(bkpinfo->scratchdir);
977 mr_asprintf(&command, "tar -zxvf %s", tmp);
978 if (run_program_and_log_output(command, FALSE)) {
979 fatal_error("Failed to untar payload");
980 }
981 mr_free(command);
982 chdir(old_pwd);
983 }
984 mr_free(tmp);
985
986 mr_asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
987 bkpinfo->scratchdir);
988 if (run_program_and_log_output(command, FALSE)) {
989 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
990 }
991 mr_free(command);
992
993 mr_asprintf(&tmp,call_program_and_get_last_line_of_output("which mondorestore"));
994 if (!tmp) {
995 fatal_error
996 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
997 }
998 mr_asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
999 mr_free(tmp);
1000
1001 if (run_program_and_log_output(command, FALSE)) {
1002 fatal_error("Failed to copy mondorestore to tmpdir");
1003 }
1004 mr_free(command);
1005
1006 mr_asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1007 paranoid_system(command);
1008 mr_free(command);
1009
1010 if (bkpinfo->postnuke_tarball[0]) {
1011 mr_asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1012 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1013 if (run_program_and_log_output(command, FALSE)) {
1014 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1015 }
1016 mr_free(command);
1017 }
1018
1019 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1020}
1021
1022
1023/**
1024 * Store the client's NFS configuration in files to be restored at restore-time.
1025 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1026 * @param bkpinfo The backup information structure. Fields used:
1027 * - @c nfs_mount
1028 * - @c nfs_remote_dir
1029 * - @c tmpdir
1030 */
1031void store_nfs_config()
1032{
1033
1034 /*@ buffers ******** */
1035 char nfs_dev[MAX_STR_LEN];
1036 char mac_addr[MAX_STR_LEN];
1037 char nfs_mount[MAX_STR_LEN];
1038 char nfs_client_ipaddr[MAX_STR_LEN];
1039 char nfs_client_netmask[MAX_STR_LEN];
1040 char nfs_client_broadcast[MAX_STR_LEN];
1041 char nfs_client_defgw[MAX_STR_LEN];
1042 char nfs_server_ipaddr[MAX_STR_LEN];
1043 char *tmp = NULL;
1044 char *command = NULL;
1045
1046 FILE *fd1 = NULL;
1047
1048 /*@ pointers ***** */
1049 char *p;
1050
1051 log_it("Storing NFS configuration");
1052 mr_asprintf(&tmp, bkpinfo->nfs_mount);
1053 p = strchr(tmp, ':');
1054 if (!p) {
1055 fatal_error
1056 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1057 }
1058 *p = '\0';
1059 p++;
1060 strcpy(nfs_server_ipaddr, tmp);
1061 strcpy(nfs_mount, p);
1062 mr_free(tmp);
1063
1064 /* BERLIOS : there is a bug #67 here as it only considers the first NIC */
1065 mr_asprintf(&command,
1066 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1067 strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1068 mr_free(command);
1069
1070 mr_asprintf(&command,
1071 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1072 strcpy(nfs_client_ipaddr,
1073 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 strcpy(nfs_client_netmask,
1079 call_program_and_get_last_line_of_output(command));
1080 mr_free(command);
1081
1082 mr_asprintf(&command,
1083 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1084 strcpy(nfs_client_broadcast,
1085 call_program_and_get_last_line_of_output(command));
1086 mr_free(command);
1087
1088 mr_asprintf(&command,
1089 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1090 strcpy(nfs_client_defgw,
1091 call_program_and_get_last_line_of_output(command));
1092 mr_free(command);
1093
1094 mr_asprintf(&tmp,
1095 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1096 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1097 log_it(tmp);
1098 mr_free(tmp);
1099
1100 if (strlen(nfs_dev) < 2) {
1101 fatal_error
1102 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1103 }
1104 /********
1105 * If the NFS device that found above is a bonded device,
1106 * we need to replace it with an ethN device or the
1107 * networking will not start during an NFS restore.
1108 *
1109 * If the NFS device in nfs_dev begins with the word "bond",
1110 * look for the corresponding slave ethN device and copy it to nfs_dev.
1111 * Using the common MAC address
1112 ********/
1113 if (!strncmp(nfs_dev, "bond", 4)) {
1114 log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1115 mr_asprintf(&command,
1116 "ifconfig %s | awk '{print $5}' | head -n1", nfs_dev);
1117 strcpy(mac_addr, call_program_and_get_last_line_of_output(command));
1118 mr_free(command);
1119
1120 mr_asprintf(&command,
1121 "ifconfig | grep -E '%s' | grep -v '%s' | head -n1 | cut -d' ' -f1", mac_addr,nfs_dev);
1122 strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1123 mr_free(command);
1124
1125 log_to_screen("Replacing it with %s\n", nfs_dev);
1126 }
1127
1128 fd1 = mr_fopen(MONDORESTORECFG, "a");
1129 mr_fprintf(fd1, "nfs-dev=%s\n", nfs_dev);
1130 mr_fprintf(fd1, "nfs-client-ipaddr=%s\n", nfs_client_ipaddr);
1131 mr_fprintf(fd1, "nfs-client-netmask=%s\n", nfs_client_netmask);
1132 mr_fprintf(fd1, "nfs-client-broadcast=%s\n", nfs_client_broadcast);
1133 mr_fprintf(fd1, "nfs-client-defgw=%s\n", nfs_client_defgw);
1134 mr_fprintf(fd1, "nfs-server-ipaddr=%s\n", nfs_server_ipaddr);
1135 mr_fprintf(fd1, "nfs-server-mount=%s\n", bkpinfo->nfs_mount);
1136 mr_fprintf(fd1, "nfs-server-path=%s\n", bkpinfo->nfs_remote_dir);
1137 mr_fprintf(fd1, "iso-prefix=%s\n", bkpinfo->prefix);
1138 mr_fclose(fd1);
1139
1140 log_it("Finished storing NFS configuration");
1141}
1142
1143
1144/**
1145 * Determine the approximate number of media that the backup will take up,
1146 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1147 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1148 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1149 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1150 * If there are more than 50 media estimated, the estimate will not be shown.
1151 * @param bkpinfo The backup information structure. Fields used:
1152 * - @c bkpinfo->backup_media_type
1153 * - @c bkpinfo->image_devs
1154 * - @c bkpinfo->media_size
1155 * - @c bkpinfo->optimal_set_size
1156 * @param noof_sets The number of filesets created.
1157 * @ingroup archiveGroup
1158 */
1159void
1160estimate_noof_media_required(long noof_sets)
1161{
1162 /*@ buffers *************** */
1163 char *tmp = NULL;
1164
1165 /*@ long long ************* */
1166 long long scratchLL;
1167
1168 if (bkpinfo->media_size <= 0L) {
1169 log_to_screen("Number of media required: UNKNOWN");
1170 return;
1171 }
1172
1173 log_it("Estimating number of media required...");
1174 scratchLL =
1175 (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1176 + (long long) (size_of_all_biggiefiles_K());
1177 scratchLL = (scratchLL / 1024) / bkpinfo->media_size;
1178 scratchLL++;
1179 scratchLL = (scratchLL * 2) / 3;
1180 if (!scratchLL) {
1181 scratchLL++;
1182 }
1183 if (scratchLL <= 1) {
1184 mr_asprintf(&tmp,
1185 _("Your backup will probably occupy a single %s. Maybe two."),
1186 bkpinfo->backup_media_string);
1187 } else {
1188 mr_asprintf(&tmp, _("Your backup will occupy approximately %s media."),
1189 number_to_text((int) (scratchLL + 1)));
1190 }
1191 if (!bkpinfo->image_devs[0] && (scratchLL < 50)) {
1192 log_to_screen(tmp);
1193 }
1194 mr_free(tmp);
1195 return;
1196}
1197
1198
1199/**
1200 * Determine whether a file is compressed. This is done
1201 * by reading through the "do-not-compress-these" file distributed with Mondo.
1202 * @param filename The file to check.
1203 * @return TRUE if it's compressed, FALSE if not.
1204 */
1205bool is_this_file_compressed(char *filename)
1206{
1207 char *do_not_compress_these = NULL;
1208 char *tmp = NULL;
1209 char *p = NULL;
1210 char *q = NULL;
1211
1212 q = strrchr(filename, '.');
1213 if (q == NULL) {
1214 return (FALSE);
1215 }
1216
1217 mr_asprintf(&tmp, "%s/do-not-compress-these", MONDO_SHARE);
1218 if (!does_file_exist(tmp)) {
1219 mr_free(tmp);
1220 return (FALSE);
1221 }
1222 malloc_string(do_not_compress_these);
1223 /* BERLIOS: This is just plain WRONG !! */
1224 strcpy(do_not_compress_these,last_line_of_file(tmp));
1225 mr_free(tmp);
1226
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(q, 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 = NULL;
1269 int retval = 0;
1270
1271 if ((fout = fopen(outfile, "w"))) {
1272 fprintf(fout,
1273 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1274 paranoid_fclose(fout);
1275 mr_msg(2, "Created %s", outfile);
1276 chmod(outfile,0755);
1277 retval = 0;
1278 } else {
1279 retval = 1;
1280 }
1281 return (retval);
1282}
1283
1284/* @} - end fileGroup */
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