source: MondoRescue/branches/stable/mondo/src/common/libmondo-files.c@ 1419

Last change on this file since 1419 was 1365, checked in by Bruno Cornec, 18 years ago

MAX_NOOF_MEDIA is gone and media_size in bkpinfo struct is now a single long field and not an array anymore
  • Property svn:keywords set to Id
File size: 34.1 KB
Line 
1/* libmondo-files.c file manipulation
2 $Id: libmondo-files.c 1365 2007-04-29 23:50:20Z 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
25/*@unused@*/
26//static char cvsid[] = "$Id: libmondo-files.c 1365 2007-04-29 23:50:20Z bruno $";
27
28extern char err_log_lines[NOOF_ERR_LINES][MAX_STR_LEN];
29
30extern int g_currentY;
31
32/**
33 * @addtogroup fileGroup
34 * @{
35 */
36/**
37 * Get an md5 checksum of the specified file.
38 * @param filename The file to checksum.
39 * @return The 32-character ASCII representation of the 128-bit checksum.
40 * @note The returned string points to static storage that will be overwritten with each call.
41 */
42char *calc_checksum_of_file(char *filename)
43{
44 /*@ buffers ***************************************************** */
45 static char output[MAX_STR_LEN];
46
47 char *command = NULL;
48 char *tmp = NULL;
49
50 /*@ pointers **************************************************** */
51 char *p;
52 FILE *fin;
53
54 /*@ initialize pointers ***************************************** */
55
56 p = output;
57
58 /*@************************************************************** */
59
60 assert_string_is_neither_NULL_nor_zerolength(filename);
61
62 if (does_file_exist(filename)) {
63 mr_asprintf(&command, "md5sum \"%s\"", filename);
64 fin = popen(command, "r");
65 mr_free(command);
66
67 if (fin) {
68 (void) fgets(output, MAX_STR_LEN, fin);
69 p = strchr(output, ' ');
70 paranoid_pclose(fin);
71 }
72 } else {
73 mr_asprintf(&tmp, "File '%s' not found; cannot calc checksum",
74 filename);
75 log_it(tmp);
76 mr_free(tmp);
77 }
78 if (p) {
79 *p = '\0';
80 }
81 return (output);
82}
83
84
85/**
86 * Get the number of lines in @p filename.
87 * @param filename The file to count lines in.
88 * @return The number of lines in @p filename.
89 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
90 */
91long count_lines_in_file(char *filename)
92{
93
94 /*@ buffers ***************************************************** */
95 char *command = NULL;
96 char *incoming = NULL;
97 char *tmp = NULL;
98
99 /*@ long ******************************************************** */
100 long noof_lines = -1L;
101
102 /*@ int ******************************************************** */
103 size_t n = 0;
104
105 /*@ pointers **************************************************** */
106 FILE *fin;
107
108 assert_string_is_neither_NULL_nor_zerolength(filename);
109 if (!does_file_exist(filename)) {
110 mr_asprintf(&tmp,
111 "%s does not exist, so I cannot found the number of lines in it",
112 filename);
113 log_it(tmp);
114 mr_free(tmp);
115 return (0);
116 }
117 mr_asprintf(&command, "cat %s | wc -l", filename);
118 if (!does_file_exist(filename)) {
119 return (-1);
120 }
121 fin = popen(command, "r");
122 mr_free(command);
123
124 if (fin) {
125 if (feof(fin)) {
126 noof_lines = 0;
127 } else {
128 mr_getline(&incoming, &n, fin);
129 while (strlen(incoming) > 0
130 && incoming[strlen(incoming) - 1] < 32) {
131 incoming[strlen(incoming) - 1] = '\0';
132 }
133 noof_lines = atol(incoming);
134 mr_free(incoming);
135 }
136 paranoid_pclose(fin);
137 }
138 return (noof_lines);
139}
140
141
142/**
143 * Check for existence of given @p filename.
144 * @param filename The file to check for.
145 * @return TRUE if it exists, FALSE otherwise.
146 */
147bool does_file_exist(char *filename)
148{
149
150 /*@ structures ************************************************** */
151 struct stat buf;
152
153 /*@************************************************************** */
154
155 assert(filename != NULL);
156
157 if (lstat(filename, &buf)) {
158 mr_msg(20, "%s does not exist", filename);
159 return (FALSE);
160 } else {
161 mr_msg(20, "%s exists", filename);
162 return (TRUE);
163 }
164}
165
166
167/**
168 * Modify @p inout (a file containing a list of files) to only contain files
169 * that exist.
170 * @param inout The filelist to operate on.
171 * @note The original file is renamed beforehand, so it will not be accessible
172 * while the modification is in progress.
173 */
174void exclude_nonexistent_files(char *inout)
175{
176 char *infname = NULL;
177 char *outfname = NULL;
178 char *tmp = NULL;
179 char *incoming = NULL;
180
181 /*@ int ********************************************************* */
182 int i;
183 size_t n = 0;
184
185 /*@ pointers **************************************************** */
186 FILE *fin, *fout;
187
188
189 /*@ end vars *********************************************************** */
190
191 assert_string_is_neither_NULL_nor_zerolength(inout);
192
193 mr_asprintf(&infname, "%s.in", inout);
194
195 mr_asprintf(&tmp, "cp -f %s %s", inout, infname);
196 run_program_and_log_output(tmp, FALSE);
197 mr_free(tmp);
198
199 if (!(fin = fopen(infname, "r"))) {
200 log_OS_error("Unable to openin infname");
201 mr_free(infname);
202 return;
203 }
204
205 mr_asprintf(&outfname, "%s", inout);
206 if (!(fout = fopen(outfname, "w"))) {
207 log_OS_error("Unable to openout outfname");
208 mr_free(infname);
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 malloc_string(tmp);
249 if (!kernel[0]) {
250 strcpy(kernel,
251 call_program_and_get_last_line_of_output
252 ("mindi --findkernel 2> /dev/null"));
253 }
254 // If we didn't get anything back, check whether mindi raised a fatal error
255 if (!kernel[0]) {
256 mr_asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
257 strcpy(tmp, call_program_and_get_last_line_of_output(command));
258 if (strlen(tmp) > 1) {
259 popup_and_OK(tmp);
260 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
261 }
262 mr_free(command);
263 }
264 log_it("Calling Mindi with kernel path of '%s'", kernel);
265 while (!kernel[0]) {
266 if (!ask_me_yes_or_no
267 ("Kernel not found or invalid. Choose another?")) {
268 return (1);
269 }
270 if (!popup_and_get_string
271 ("Kernel path",
272 "What is the full path and filename of your kernel, please?",
273 kernel, MAX_STR_LEN / 4)) {
274 fatal_error
275 ("Kernel not found. Please specify with the '-k' flag.");
276 }
277 log_it("User says kernel is at %s", kernel);
278 }
279 return (0);
280}
281
282
283/**
284 * Find location of specified executable in user's PATH.
285 * @param fname The basename of the executable to search for (e.g. @c afio).
286 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
287 * @note The returned string points to static storage that will be overwritten with each call.
288 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
289 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
290 * to nothing.
291 */
292char *find_home_of_exe(char *fname)
293{
294 /*@ buffers ********************* */
295 static char output[MAX_STR_LEN];
296 char *incoming;
297 char *command = NULL;
298
299 malloc_string(incoming);
300 incoming[0] = '\0';
301 /*@******************************* */
302
303 assert_string_is_neither_NULL_nor_zerolength(fname);
304
305 mr_asprintf(&command, "which %s 2> /dev/null", fname);
306 strcpy(incoming, call_program_and_get_last_line_of_output(command));
307 mr_free(command);
308
309 if (incoming[0] == '\0') {
310 if (system("which file > /dev/null 2> /dev/null")) {
311 mr_free(incoming);
312 mr_free(command);
313 output[0] = '\0';
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 strcpy(incoming,
320 call_program_and_get_last_line_of_output(command));
321 mr_free(command);
322 }
323 if (incoming[0] == '\0') // yes, it is == '\0' twice, not once :)
324 {
325 mr_asprintf(&command, "dirname %s 2> /dev/null", incoming);
326 strcpy(incoming,
327 call_program_and_get_last_line_of_output(command));
328 mr_free(command);
329 }
330 strcpy(output, incoming);
331 if (output[0] != '\0' && does_file_exist(output)) {
332 mr_msg(4, "find_home_of_exe () --- Found %s at %s", fname,
333 incoming);
334 } else {
335 output[0] = '\0';
336 mr_msg(4, "find_home_of_exe() --- Could not find %s", fname);
337 }
338 mr_free(incoming);
339 if (!output[0]) {
340 return (NULL);
341 } else {
342 return (output);
343 }
344}
345
346
347/**
348 * Get the last sequence of digits surrounded by non-digits in the first 32k of
349 * a file.
350 * @param logfile The file to look in.
351 * @return The number found, or 0 if none.
352 */
353int get_trackno_from_logfile(char *logfile)
354{
355
356 /*@ pointers ********************************************************* */
357 FILE *fin;
358
359 /*@ int ************************************************************** */
360 int trackno = 0;
361 size_t len = 0;
362
363 /*@ buffer ************************************************************ */
364 char datablock[32701];
365
366 assert_string_is_neither_NULL_nor_zerolength(logfile);
367
368 if (!(fin = fopen(logfile, "r"))) {
369 log_OS_error("Unable to open logfile");
370 fatal_error("Unable to open logfile to read trackno");
371 }
372 len = fread(datablock, 1, 32700, fin);
373 paranoid_fclose(fin);
374 if (len <= 0) {
375 return (0);
376 }
377 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
378 datablock[len--] = '\0';
379 for (; len > 0 && isdigit(datablock[len - 1]); len--);
380 trackno = atoi(datablock + len);
381 return (trackno);
382}
383
384
385/**
386 * Get a percentage from the last line of @p filename. We look for the string
387 * "% done" on the last line and, if we find it, grab the number before the last % sign.
388 * @param filename The file to get the percentage from.
389 * @return The percentage found, or 0 for error.
390 */
391int grab_percentage_from_last_line_of_file(char *filename)
392{
393
394 char *lastline = NULL;
395 char *command = NULL;
396 char *p = NULL;
397 int i;
398
399 malloc_string(lastline);
400 for (i = NOOF_ERR_LINES - 1;
401 i >= 0 && !strstr(err_log_lines[i], "% Done")
402 && !strstr(err_log_lines[i], "% done"); i--);
403 if (i < 0) {
404 mr_asprintf(&command,
405 "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
406 filename, '%');
407 strcpy(lastline,
408 call_program_and_get_last_line_of_output(command));
409 mr_free(command);
410 if (!lastline[0]) {
411 return (0);
412 }
413 } else {
414 strcpy(lastline, err_log_lines[i]);
415 }
416
417 p = strrchr(lastline, '%');
418 if (p) {
419 *p = '\0';
420 }
421 if (!p) {
422 return (0);
423 }
424 *p = '\0';
425 for (p--; *p != ' ' && p != lastline; p--);
426 if (p != lastline) {
427 p++;
428 }
429 i = atoi(p);
430
431 return (i);
432}
433
434
435/**
436 * Return the last line of @p filename.
437 * @param filename The file to get the last line of.
438 * @return The last line of the file.
439 * @note The returned string points to static storage that will be overwritten with each call.
440 */
441char *last_line_of_file(char *filename)
442{
443 /*@ buffers ***************************************************** */
444 static char output[MAX_STR_LEN];
445 char *command = NULL;
446 char *tmp = NULL;
447
448 /*@ pointers **************************************************** */
449 FILE *fin;
450
451 /*@ end vars **************************************************** */
452
453 if (!does_file_exist(filename)) {
454 mr_asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
455 filename);
456 log_it(tmp);
457 mr_free(tmp);
458 output[0] = '\0';
459 return (output);
460 }
461 mr_asprintf(&command, "tail -n1 %s", filename);
462 fin = popen(command, "r");
463 mr_free(command);
464
465 (void) fgets(output, MAX_STR_LEN, fin);
466 paranoid_pclose(fin);
467 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
468 output[strlen(output) - 1] = '\0';
469 }
470 return (output);
471}
472
473
474/**
475 * Get the length of @p filename in bytes.
476 * @param filename The file to get the length of.
477 * @return The length of the file, or -1 for error.
478 */
479off_t length_of_file(char *filename)
480{
481 /*@ pointers *************************************************** */
482 FILE *fin;
483
484 /*@ long long ************************************************* */
485 off_t length;
486
487 fin = fopen(filename, "r");
488 if (!fin) {
489 log_it("filename=%s", filename);
490 log_OS_error("Unable to openin filename");
491 return (-1);
492 }
493 fseeko(fin, 0, SEEK_END);
494 length = ftello(fin);
495 paranoid_fclose(fin);
496 return (length);
497}
498
499
500/**
501 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
502 * @param outdir_fname The directory to create.
503 * @return The return value of @c mkdir.
504 */
505/* BERLIOS: This function shouldn't call system at all */
506int make_hole_for_dir(char *outdir_fname)
507{
508 char *tmp;
509 int res = 0;
510
511 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
512 mr_asprintf(&tmp, "mkdir -p %s", outdir_fname);
513 res = system(tmp);
514 mr_free(tmp);
515 return (res);
516}
517
518
519/**
520 * Create the parent directories of @p outfile_fname.
521 * @param outfile_fname The file to make a "hole" for.
522 * @return 0, always.
523 * @bug Return value unnecessary.
524 */
525/* BERLIOS: This function shouldn't call system at all */
526int make_hole_for_file(char *outfile_fname)
527{
528 /*@ buffer ****************************************************** */
529 char *command;
530
531 /*@ int ******************************************************** */
532 int res = 0;
533
534 /*@ end vars *************************************************** */
535
536 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
537 assert(!strstr(outfile_fname, MNT_CDROM));
538 assert(!strstr(outfile_fname, "/dev/cdrom"));
539
540 mr_asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
541 res += system(command);
542 mr_free(command);
543
544 mr_asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
545 res += system(command);
546 mr_free(command);
547
548 mr_asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
549 res += system(command);
550 mr_free(command);
551 unlink(outfile_fname);
552 return (0);
553}
554
555
556/**
557 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
558 * @param filelist_fname The file to search through.
559 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
560 * @return The number of lines matched.
561 */
562long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
563{
564 /*@ long ******************************************************* */
565 long matches = 0;
566
567 /*@ pointers *************************************************** */
568 FILE *fin;
569
570 /*@ buffers **************************************************** */
571 char *incoming = NULL;
572
573 size_t n = 0;
574 /*@ end vars *************************************************** */
575
576
577 fin = fopen(filelist_fname, "r");
578
579 if (!fin) {
580 log_OS_error("Unable to openin filelist_fname");
581 return (0);
582 }
583 mr_getline(&incoming, &n, fin);
584 while (!feof(fin)) {
585 if (strstr(incoming, wildcard)) {
586 matches++;
587 }
588 mr_getline(&incoming, &n, fin);
589 }
590 paranoid_fclose(fin);
591 mr_free(incoming);
592 return (matches);
593}
594
595
596/**
597 * Register our PID in a file in /var/run.
598 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
599 * @param pid 0 to remove file, anything else to create it.
600 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
601 * @note This function does not provide support against multiple instances, unless you check for that yourself.
602 */
603void register_pid(pid_t pid, char *name_str)
604{
605 char *tmp = NULL;
606 char *lockfile_fname = NULL;
607 int res;
608 size_t n = 0;
609 FILE *fin;
610
611 mr_asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
612 if (!pid) {
613 log_it("Unregistering PID");
614 if (unlink(lockfile_fname)) {
615 log_it("Error unregistering PID");
616 }
617 mr_free(lockfile_fname);
618 return;
619 }
620 if (does_file_exist(lockfile_fname)) {
621 if ((fin = fopen(lockfile_fname, "r"))) {
622 mr_getline(&tmp, &n, fin);
623 paranoid_fclose(fin);
624 } else {
625 log_OS_error("Unable to openin lockfile_fname");
626 }
627 pid = (pid_t) atol(tmp);
628 mr_free(tmp);
629
630 mr_asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
631 res = system(tmp);
632 mr_free(tmp);
633 if (!res) {
634 log_it
635 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
636 lockfile_fname);
637 }
638 }
639 mr_asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
640 lockfile_fname);
641 mr_free(lockfile_fname);
642
643 if (system(tmp)) {
644 fatal_error("Cannot register PID");
645 }
646 mr_free(tmp);
647 return;
648}
649
650
651/**
652 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
653 * @param tmpdir The tempdir where the mountlist is stored.
654 * @param dev The device to search for.
655 * @return The size of the partition in KB.
656 */
657long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
658{
659 char *command = NULL;
660 char *sz_res = NULL;
661 long file_len_K = 0L;
662
663 mr_asprintf(&command,
664 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
665 dev, tmpdir);
666 log_it(command);
667 mr_asprintf(&sz_res, call_program_and_get_last_line_of_output(command));
668 file_len_K = atol(sz_res);
669 mr_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
670 mr_free(command);
671 mr_free(sz_res);
672 return (file_len_K);
673}
674
675
676/**
677 * Calculate the total size (in KB) of all the biggiefiles in this backup.
678 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
679 * @return The total size of all biggiefiles in KB.
680 */
681long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
682{
683 char *fname = NULL;
684 char *biggielist = NULL;
685 char *comment = NULL;
686 char *tmp = NULL;
687 char *command = NULL;
688
689 /*@ long ******************************************************** */
690 long scratchL = 0L;
691 long file_len_K = 0L;
692
693 /*@ pointers *************************************************** */
694 FILE *fin = NULL;
695 size_t n = 0;
696
697 /*@ end vars *************************************************** */
698
699 malloc_string(tmp);
700 log_it("Calculating size of all biggiefiles (in total)");
701 mr_asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
702 log_it("biggielist = %s", biggielist);
703 if (!(fin = fopen(biggielist, "r"))) {
704 log_OS_error
705 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
706 } else {
707 mr_msg(4, "Reading it...");
708 for (mr_getline(&fname, &n, fin); !feof(fin);
709 mr_getline(&fname, &n, fin)) {
710 if (fname[strlen(fname) - 1] <= 32) {
711 fname[strlen(fname) - 1] = '\0';
712 }
713 if (0 == strncmp(fname, "/dev/", 5)) {
714 if (is_dev_an_NTFS_dev(fname)) {
715 if ( !find_home_of_exe("ntfsresize")) {
716 fatal_error("ntfsresize not found");
717 }
718 mr_asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
719 log_it("command = %s", command);
720 strcpy (tmp, call_program_and_get_last_line_of_output(command));
721 mr_free(command);
722
723 log_it("res of it = %s", tmp);
724 file_len_K = atoll(tmp) / 1024L;
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 mr_free(tmp);
754 return (scratchL);
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 = NULL;
945 char *tmp = NULL;
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_asprintf(&command, CP_BIN " --parents -pRdf %s %s", MONDO_SHARE,
953 bkpinfo->scratchdir);
954
955 mr_msg(4, "command = %s", command);
956 if (run_program_and_log_output(command, 1)) {
957 fatal_error("Failed to copy Mondo's stuff to scratchdir");
958 }
959 mr_free(command);
960
961 /* i18n */
962 mr_asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
963 mr_msg(4, "command = %s", command);
964 run_program_and_log_output(command, 1);
965 mr_free(command);
966
967 mr_asprintf(&tmp, "%s/payload.tgz", MONDO_SHARE);
968 if (does_file_exist(tmp)) {
969 log_it("Untarring payload %s to scratchdir %s", tmp,
970 bkpinfo->scratchdir);
971 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
972 chdir(bkpinfo->scratchdir);
973 mr_asprintf(&command, "tar -zxvf %s", tmp);
974 if (run_program_and_log_output(command, FALSE)) {
975 fatal_error("Failed to untar payload");
976 }
977 mr_free(command);
978 chdir(old_pwd);
979 }
980 mr_free(tmp);
981
982 mr_asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
983 bkpinfo->scratchdir);
984 if (run_program_and_log_output(command, FALSE)) {
985 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
986 }
987 mr_free(command);
988
989 mr_asprintf(&tmp,call_program_and_get_last_line_of_output("which mondorestore"));
990 if (!tmp) {
991 fatal_error
992 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
993 }
994 mr_asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
995 mr_free(tmp);
996
997 if (run_program_and_log_output(command, FALSE)) {
998 fatal_error("Failed to copy mondorestore to tmpdir");
999 }
1000 mr_free(command);
1001
1002 mr_asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1003 paranoid_system(command);
1004 mr_free(command);
1005
1006 if (bkpinfo->postnuke_tarball[0]) {
1007 mr_asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1008 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1009 if (run_program_and_log_output(command, FALSE)) {
1010 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1011 }
1012 mr_free(command);
1013 }
1014
1015 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1016}
1017
1018
1019/**
1020 * Store the client's NFS configuration in files to be restored at restore-time.
1021 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1022 * @param bkpinfo The backup information structure. Fields used:
1023 * - @c nfs_mount
1024 * - @c nfs_remote_dir
1025 * - @c tmpdir
1026 */
1027void store_nfs_config(struct s_bkpinfo *bkpinfo)
1028{
1029
1030 /*@ buffers ******** */
1031 char nfs_dev[MAX_STR_LEN];
1032 char mac_addr[MAX_STR_LEN];
1033 char nfs_mount[MAX_STR_LEN];
1034 char nfs_client_ipaddr[MAX_STR_LEN];
1035 char nfs_client_netmask[MAX_STR_LEN];
1036 char nfs_client_broadcast[MAX_STR_LEN];
1037 char nfs_client_defgw[MAX_STR_LEN];
1038 char nfs_server_ipaddr[MAX_STR_LEN];
1039 char *tmp = NULL;
1040 char *command = NULL;
1041
1042 FILE *fd1 = NULL;
1043
1044 /*@ pointers ***** */
1045 char *p;
1046
1047 log_it("Storing NFS configuration");
1048 mr_asprintf(&tmp, bkpinfo->nfs_mount);
1049 p = strchr(tmp, ':');
1050 if (!p) {
1051 fatal_error
1052 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1053 }
1054 *p = '\0';
1055 p++;
1056 strcpy(nfs_server_ipaddr, tmp);
1057 strcpy(nfs_mount, p);
1058 mr_free(tmp);
1059
1060 /* BERLIOS : there is a bug #67 here as it only considers the first NIC */
1061 mr_asprintf(&command,
1062 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1063 strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1064 mr_free(command);
1065
1066 mr_asprintf(&command,
1067 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1068 strcpy(nfs_client_ipaddr,
1069 call_program_and_get_last_line_of_output(command));
1070 mr_free(command);
1071
1072 mr_asprintf(&command,
1073 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1074 strcpy(nfs_client_netmask,
1075 call_program_and_get_last_line_of_output(command));
1076 mr_free(command);
1077
1078 mr_asprintf(&command,
1079 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1080 strcpy(nfs_client_broadcast,
1081 call_program_and_get_last_line_of_output(command));
1082 mr_free(command);
1083
1084 mr_asprintf(&command,
1085 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1086 strcpy(nfs_client_defgw,
1087 call_program_and_get_last_line_of_output(command));
1088 mr_free(command);
1089
1090 mr_asprintf(&tmp,
1091 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1092 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1093 log_it(tmp);
1094 mr_free(tmp);
1095
1096 if (strlen(nfs_dev) < 2) {
1097 fatal_error
1098 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1099 }
1100 /********
1101 * If the NFS device that found above is a bonded device,
1102 * we need to replace it with an ethN device or the
1103 * networking will not start during an NFS restore.
1104 *
1105 * If the NFS device in nfs_dev begins with the word "bond",
1106 * look for the corresponding slave ethN device and copy it to nfs_dev.
1107 * Using the common MAC address
1108 ********/
1109 if (!strncmp(nfs_dev, "bond", 4)) {
1110 log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1111 mr_asprintf(&command,
1112 "ifconfig %s | awk '{print $5}' | head -n1", nfs_dev);
1113 strcpy(mac_addr, call_program_and_get_last_line_of_output(command));
1114 mr_free(command);
1115
1116 mr_asprintf(&command,
1117 "ifconfig | grep -E '%s' | grep -v '%s' | head -n1 | cut -d' ' -f1", mac_addr,nfs_dev);
1118 strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1119 mr_free(command);
1120
1121 log_to_screen("Replacing it with %s\n", nfs_dev);
1122 }
1123
1124 fd1 = mr_fopen(MONDORESTORECFG, "a");
1125 mr_fprintf(fd1, "nfs-dev=%s\n", nfs_dev);
1126 mr_fprintf(fd1, "nfs-client-ipaddr=%s\n", nfs_client_ipaddr);
1127 mr_fprintf(fd1, "nfs-client-netmask=%s\n", nfs_client_netmask);
1128 mr_fprintf(fd1, "nfs-client-broadcast=%s\n", nfs_client_broadcast);
1129 mr_fprintf(fd1, "nfs-client-defgw=%s\n", nfs_client_defgw);
1130 mr_fprintf(fd1, "nfs-server-ipaddr=%s\n", nfs_server_ipaddr);
1131 mr_fprintf(fd1, "nfs-server-mount=%s\n", bkpinfo->nfs_mount);
1132 mr_fprintf(fd1, "nfs-server-path=%s\n", bkpinfo->nfs_remote_dir);
1133 mr_fprintf(fd1, "iso-prefix=%s\n", bkpinfo->prefix);
1134 mr_fclose(fd1);
1135
1136 log_it("Finished storing NFS configuration");
1137}
1138
1139
1140/**
1141 * Determine the approximate number of media that the backup will take up,
1142 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1143 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1144 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1145 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1146 * If there are more than 50 media estimated, the estimate will not be shown.
1147 * @param bkpinfo The backup information structure. Fields used:
1148 * - @c bkpinfo->backup_media_type
1149 * - @c bkpinfo->image_devs
1150 * - @c bkpinfo->media_size
1151 * - @c bkpinfo->optimal_set_size
1152 * - @c bkpinfo->use_lzo
1153 * @param noof_sets The number of filesets created.
1154 * @ingroup archiveGroup
1155 */
1156void
1157estimate_noof_media_required(struct s_bkpinfo *bkpinfo, long noof_sets)
1158{
1159 /*@ buffers *************** */
1160 char *tmp = NULL;
1161
1162 /*@ long long ************* */
1163 long long scratchLL;
1164
1165 if (bkpinfo->media_size <= 0L || bkpinfo->backup_media_type == nfs) {
1166 log_to_screen("Number of media required: UNKNOWN");
1167 return;
1168 }
1169
1170 log_it("Estimating number of media required...");
1171 scratchLL =
1172 (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1173 + (long long) (size_of_all_biggiefiles_K(bkpinfo));
1174 scratchLL = (scratchLL / 1024) / bkpinfo->media_size;
1175 scratchLL++;
1176 if (bkpinfo->use_lzo) {
1177 scratchLL = (scratchLL * 2) / 3;
1178 } else if (bkpinfo->use_gzip) {
1179 scratchLL = (scratchLL * 2) / 3;
1180 } else {
1181 scratchLL = scratchLL / 2;
1182 }
1183 if (!scratchLL) {
1184 scratchLL++;
1185 }
1186 if (scratchLL <= 1) {
1187 mr_asprintf(&tmp,
1188 _("Your backup will probably occupy a single %s. Maybe two."),
1189 bkpinfo->backup_media_string);
1190 } else {
1191 mr_asprintf(&tmp, _("Your backup will occupy approximately %s media."),
1192 number_to_text((int) (scratchLL + 1)));
1193 }
1194 if (!bkpinfo->image_devs[0] && (scratchLL < 50)) {
1195 log_to_screen(tmp);
1196 }
1197 mr_free(tmp);
1198 return;
1199}
1200
1201
1202/**
1203 * Determine whether a file is compressed. This is done
1204 * by reading through the "do-not-compress-these" file distributed with Mondo.
1205 * @param filename The file to check.
1206 * @return TRUE if it's compressed, FALSE if not.
1207 */
1208bool is_this_file_compressed(char *filename)
1209{
1210 char *do_not_compress_these = NULL;
1211 char *tmp = NULL;
1212 char *p = NULL;
1213 char *q = NULL;
1214
1215 q = strrchr(filename, '.');
1216 if (q == NULL) {
1217 return (FALSE);
1218 }
1219
1220 mr_asprintf(&tmp, "%s/do-not-compress-these", MONDO_SHARE);
1221 if (!does_file_exist(tmp)) {
1222 mr_free(tmp);
1223 return (FALSE);
1224 }
1225 malloc_string(do_not_compress_these);
1226 /* BERLIOS: This is just plain WRONG !! */
1227 strcpy(do_not_compress_these,last_line_of_file(tmp));
1228 mr_free(tmp);
1229
1230 for (p = do_not_compress_these; p != NULL; p++) {
1231 mr_asprintf(&tmp, p);
1232 if (strchr(tmp, ' ')) {
1233 *(strchr(tmp, ' ')) = '\0';
1234 }
1235 if (!strcmp(q, tmp)) {
1236 mr_free(do_not_compress_these);
1237 mr_free(tmp);
1238 return (TRUE);
1239 }
1240 mr_free(tmp);
1241
1242 if (!(p = strchr(p, ' '))) {
1243 break;
1244 }
1245 }
1246 mr_free(do_not_compress_these);
1247 return (FALSE);
1248}
1249
1250
1251int mode_of_file(char *fname)
1252{
1253 struct stat buf;
1254
1255 if (lstat(fname, &buf)) {
1256 return (-1);
1257 } // error
1258 else {
1259 return (buf.st_mode);
1260 }
1261}
1262
1263
1264/**
1265 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1266 * @param outfile Where to put the script.
1267 * @return 0 for success, 1 for failure.
1268 */
1269int make_grub_install_scriptlet(char *outfile)
1270{
1271 FILE *fout = NULL;
1272 char *tmp = NULL;
1273 int retval = 0;
1274
1275 if ((fout = fopen(outfile, "w"))) {
1276 fprintf(fout,
1277 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1278 paranoid_fclose(fout);
1279 mr_msg(2, "Created %s", outfile);
1280 mr_asprintf(&tmp, "chmod +x %s", outfile);
1281 paranoid_system(tmp);
1282 mr_free(tmp);
1283
1284 retval = 0;
1285 } else {
1286 retval = 1;
1287 }
1288 return (retval);
1289}
1290
1291/* @} - end fileGroup */
Note: See TracBrowser for help on using the repository browser.