source: MondoRescue/branches/stable/mondo/src/common/libmondo-files.c@ 1194

Last change on this file since 1194 was 1194, checked in by Bruno Cornec, 17 years ago

Fix a problem in is_this_file_compressed where the result of a function wan't tested.
this function is still wrong :-)
  • Property svn:keywords set to Id
File size: 34.3 KB
Line 
1/* libmondo-files.c file manipulation
2 $Id: libmondo-files.c 1194 2007-02-20 11:38:16Z 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 1194 2007-02-20 11:38:16Z bruno $";
27
28extern char err_log_lines[NOOF_ERR_LINES][MAX_STR_LEN];
29
30extern int g_currentY;
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[MAX_STR_LEN];
47
48 char *command = NULL;
49 char *tmp = NULL;
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 (void) fgets(output, MAX_STR_LEN, 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 = NULL;
97 char *incoming = NULL;
98 char *tmp = NULL;
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 = NULL;
178 char *outfname = NULL;
179 char *tmp = NULL;
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(infname);
210 mr_free(outfname);
211 return;
212 }
213 mr_free(outfname);
214
215 for (mr_getline(&incoming, &n, fin); !feof(fin);
216 mr_getline(&incoming, &n, fin)) {
217 i = strlen(incoming) - 1;
218 if (i >= 0 && incoming[i] < 32) {
219 incoming[i] = '\0';
220 }
221 if (does_file_exist(incoming)) {
222 fprintf(fout, "%s\n", incoming);
223 } else {
224 mr_asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
225 log_it(tmp);
226 mr_free(tmp);
227 }
228 }
229 mr_free(incoming);
230 paranoid_fclose(fout);
231 paranoid_fclose(fin);
232 unlink(infname);
233 mr_free(infname);
234}
235
236
237/**
238 * Attempt to find the user's kernel by calling Mindi.
239 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
240 * don't do anything.
241 * @param kernel Where to put the found kernel.
242 * @return 0 for success, 1 for failure.
243 */
244int figure_out_kernel_path_interactively_if_necessary(char *kernel)
245{
246 char *tmp = NULL;
247 char *command = NULL;
248
249 malloc_string(tmp);
250 if (!kernel[0]) {
251 strcpy(kernel,
252 call_program_and_get_last_line_of_output
253 ("mindi --findkernel 2> /dev/null"));
254 }
255 // If we didn't get anything back, check whether mindi raised a fatal error
256 if (!kernel[0]) {
257 mr_asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
258 strcpy(tmp, call_program_and_get_last_line_of_output(command));
259 if (strlen(tmp) > 1) {
260 popup_and_OK(tmp);
261 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
262 }
263 mr_free(command);
264 }
265 log_it("Calling Mindi with kernel path of '%s'", kernel);
266 while (!kernel[0]) {
267 if (!ask_me_yes_or_no
268 ("Kernel not found or invalid. Choose another?")) {
269 return (1);
270 }
271 if (!popup_and_get_string
272 ("Kernel path",
273 "What is the full path and filename of your kernel, please?",
274 kernel, MAX_STR_LEN / 4)) {
275 fatal_error
276 ("Kernel not found. Please specify with the '-k' flag.");
277 }
278 log_it("User says kernel is at %s", kernel);
279 }
280 return (0);
281}
282
283
284/**
285 * Find location of specified executable in user's PATH.
286 * @param fname The basename of the executable to search for (e.g. @c afio).
287 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
288 * @note The returned string points to static storage that will be overwritten with each call.
289 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
290 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
291 * to nothing.
292 */
293char *find_home_of_exe(char *fname)
294{
295 /*@ buffers ********************* */
296 static char output[MAX_STR_LEN];
297 char *incoming;
298 char *command = NULL;
299
300 malloc_string(incoming);
301 incoming[0] = '\0';
302 /*@******************************* */
303
304 assert_string_is_neither_NULL_nor_zerolength(fname);
305
306 mr_asprintf(&command, "which %s 2> /dev/null", fname);
307 strcpy(incoming, call_program_and_get_last_line_of_output(command));
308 mr_free(command);
309
310 if (incoming[0] == '\0') {
311 if (system("which file > /dev/null 2> /dev/null")) {
312 mr_free(incoming);
313 mr_free(command);
314 output[0] = '\0';
315 return (NULL); // forget it :)
316 }
317 mr_asprintf(&command,
318 "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
319 incoming);
320 strcpy(incoming,
321 call_program_and_get_last_line_of_output(command));
322 mr_free(command);
323 }
324 if (incoming[0] == '\0') // yes, it is == '\0' twice, not once :)
325 {
326 mr_asprintf(&command, "dirname %s 2> /dev/null", incoming);
327 strcpy(incoming,
328 call_program_and_get_last_line_of_output(command));
329 mr_free(command);
330 }
331 strcpy(output, incoming);
332 if (output[0] != '\0' && does_file_exist(output)) {
333 mr_msg(4, "find_home_of_exe () --- Found %s at %s", fname,
334 incoming);
335 } else {
336 output[0] = '\0';
337 mr_msg(4, "find_home_of_exe() --- Could not find %s", fname);
338 }
339 mr_free(incoming);
340 if (!output[0]) {
341 return (NULL);
342 } else {
343 return (output);
344 }
345}
346
347
348/**
349 * Get the last sequence of digits surrounded by non-digits in the first 32k of
350 * a file.
351 * @param logfile The file to look in.
352 * @return The number found, or 0 if none.
353 */
354int get_trackno_from_logfile(char *logfile)
355{
356
357 /*@ pointers ********************************************************* */
358 FILE *fin;
359
360 /*@ int ************************************************************** */
361 int trackno = 0;
362 size_t len = 0;
363
364 /*@ buffer ************************************************************ */
365 char datablock[32701];
366
367 assert_string_is_neither_NULL_nor_zerolength(logfile);
368
369 if (!(fin = fopen(logfile, "r"))) {
370 log_OS_error("Unable to open logfile");
371 fatal_error("Unable to open logfile to read trackno");
372 }
373 len = fread(datablock, 1, 32700, fin);
374 paranoid_fclose(fin);
375 if (len <= 0) {
376 return (0);
377 }
378 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
379 datablock[len--] = '\0';
380 for (; len > 0 && isdigit(datablock[len - 1]); len--);
381 trackno = atoi(datablock + len);
382 return (trackno);
383}
384
385
386/**
387 * Get a percentage from the last line of @p filename. We look for the string
388 * "% done" on the last line and, if we find it, grab the number before the last % sign.
389 * @param filename The file to get the percentage from.
390 * @return The percentage found, or 0 for error.
391 */
392int grab_percentage_from_last_line_of_file(char *filename)
393{
394
395 char *lastline = NULL;
396 char *command = NULL;
397 char *p = NULL;
398 int i;
399
400 malloc_string(lastline);
401 for (i = NOOF_ERR_LINES - 1;
402 i >= 0 && !strstr(err_log_lines[i], "% Done")
403 && !strstr(err_log_lines[i], "% done"); i--);
404 if (i < 0) {
405 mr_asprintf(&command,
406 "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
407 filename, '%');
408 strcpy(lastline,
409 call_program_and_get_last_line_of_output(command));
410 mr_free(command);
411 if (!lastline[0]) {
412 return (0);
413 }
414 } else {
415 strcpy(lastline, err_log_lines[i]);
416 }
417
418 p = strrchr(lastline, '%');
419 if (p) {
420 *p = '\0';
421 }
422 if (!p) {
423 return (0);
424 }
425 *p = '\0';
426 for (p--; *p != ' ' && p != lastline; p--);
427 if (p != lastline) {
428 p++;
429 }
430 i = atoi(p);
431
432 return (i);
433}
434
435
436/**
437 * Return the last line of @p filename.
438 * @param filename The file to get the last line of.
439 * @return The last line of the file.
440 * @note The returned string points to static storage that will be overwritten with each call.
441 */
442char *last_line_of_file(char *filename)
443{
444 /*@ buffers ***************************************************** */
445 static char output[MAX_STR_LEN];
446 char *command = NULL;
447 char *tmp = NULL;
448
449 /*@ pointers **************************************************** */
450 FILE *fin;
451
452 /*@ end vars **************************************************** */
453
454 if (!does_file_exist(filename)) {
455 mr_asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
456 filename);
457 log_it(tmp);
458 mr_free(tmp);
459 output[0] = '\0';
460 return (output);
461 }
462 mr_asprintf(&command, "tail -n1 %s", filename);
463 fin = popen(command, "r");
464 mr_free(command);
465
466 (void) fgets(output, MAX_STR_LEN, fin);
467 paranoid_pclose(fin);
468 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
469 output[strlen(output) - 1] = '\0';
470 }
471 return (output);
472}
473
474
475/**
476 * Get the length of @p filename in bytes.
477 * @param filename The file to get the length of.
478 * @return The length of the file, or -1 for error.
479 */
480off_t length_of_file(char *filename)
481{
482 /*@ pointers *************************************************** */
483 FILE *fin;
484
485 /*@ long long ************************************************* */
486 off_t length;
487
488 fin = fopen(filename, "r");
489 if (!fin) {
490 log_it("filename=%s", filename);
491 log_OS_error("Unable to openin filename");
492 return (-1);
493 }
494 fseeko(fin, 0, SEEK_END);
495 length = ftello(fin);
496 paranoid_fclose(fin);
497 return (length);
498}
499
500
501/**
502 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
503 * @param outdir_fname The directory to create.
504 * @return The return value of @c mkdir.
505 */
506/* BERLIOS: This function shouldn't call system at all */
507int make_hole_for_dir(char *outdir_fname)
508{
509 char *tmp;
510 int res = 0;
511
512 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
513 mr_asprintf(&tmp, "mkdir -p %s", outdir_fname);
514 res = system(tmp);
515 mr_free(tmp);
516 return (res);
517}
518
519
520/**
521 * Create the parent directories of @p outfile_fname.
522 * @param outfile_fname The file to make a "hole" for.
523 * @return 0, always.
524 * @bug Return value unnecessary.
525 */
526/* BERLIOS: This function shouldn't call system at all */
527int make_hole_for_file(char *outfile_fname)
528{
529 /*@ buffer ****************************************************** */
530 char *command;
531
532 /*@ int ******************************************************** */
533 int res = 0;
534
535 /*@ end vars *************************************************** */
536
537 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
538 assert(!strstr(outfile_fname, MNT_CDROM));
539 assert(!strstr(outfile_fname, "/dev/cdrom"));
540
541 mr_asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
542 res += system(command);
543 mr_free(command);
544
545 mr_asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
546 res += system(command);
547 mr_free(command);
548
549 mr_asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
550 res += system(command);
551 mr_free(command);
552 unlink(outfile_fname);
553 return (0);
554}
555
556
557/**
558 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
559 * @param filelist_fname The file to search through.
560 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
561 * @return The number of lines matched.
562 */
563long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
564{
565 /*@ long ******************************************************* */
566 long matches = 0;
567
568 /*@ pointers *************************************************** */
569 FILE *fin;
570
571 /*@ buffers **************************************************** */
572 char *incoming = NULL;
573
574 size_t n = 0;
575 /*@ end vars *************************************************** */
576
577
578 fin = fopen(filelist_fname, "r");
579
580 if (!fin) {
581 log_OS_error("Unable to openin filelist_fname");
582 return (0);
583 }
584 mr_getline(&incoming, &n, fin);
585 while (!feof(fin)) {
586 if (strstr(incoming, wildcard)) {
587 matches++;
588 }
589 mr_getline(&incoming, &n, fin);
590 }
591 paranoid_fclose(fin);
592 mr_free(incoming);
593 return (matches);
594}
595
596
597/**
598 * Register our PID in a file in /var/run.
599 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
600 * @param pid 0 to remove file, anything else to create it.
601 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
602 * @note This function does not provide support against multiple instances, unless you check for that yourself.
603 */
604void register_pid(pid_t pid, char *name_str)
605{
606 char *tmp = NULL;
607 char *lockfile_fname = NULL;
608 int res;
609 size_t n = 0;
610 FILE *fin;
611
612 mr_asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
613 if (!pid) {
614 log_it("Unregistering PID");
615 if (unlink(lockfile_fname)) {
616 log_it("Error unregistering PID");
617 }
618 mr_free(lockfile_fname);
619 return;
620 }
621 if (does_file_exist(lockfile_fname)) {
622 if ((fin = fopen(lockfile_fname, "r"))) {
623 mr_getline(&tmp, &n, fin);
624 paranoid_fclose(fin);
625 } else {
626 log_OS_error("Unable to openin lockfile_fname");
627 }
628 pid = (pid_t) atol(tmp);
629 mr_free(tmp);
630
631 mr_asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
632 res = system(tmp);
633 mr_free(tmp);
634 if (!res) {
635 log_it
636 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
637 lockfile_fname);
638 }
639 }
640 mr_asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
641 lockfile_fname);
642 mr_free(lockfile_fname);
643
644 if (system(tmp)) {
645 fatal_error("Cannot register PID");
646 }
647 mr_free(tmp);
648 return;
649}
650
651
652/**
653 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
654 * @param tmpdir The tempdir where the mountlist is stored.
655 * @param dev The device to search for.
656 * @return The size of the partition in KB.
657 */
658long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
659{
660 char *command = NULL;
661 char *sz_res = NULL;
662 long file_len_K = 0L;
663
664 mr_asprintf(&command,
665 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
666 dev, tmpdir);
667 log_it(command);
668 mr_asprintf(&sz_res, call_program_and_get_last_line_of_output(command));
669 file_len_K = atol(sz_res);
670 mr_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
671 mr_free(command);
672 mr_free(sz_res);
673 return (file_len_K);
674}
675
676
677/**
678 * Calculate the total size (in KB) of all the biggiefiles in this backup.
679 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
680 * @return The total size of all biggiefiles in KB.
681 */
682long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
683{
684 char *fname = NULL;
685 char *biggielist = NULL;
686 char *comment = NULL;
687 char *tmp = NULL;
688 char *command = NULL;
689
690 /*@ long ******************************************************** */
691 long scratchL = 0L;
692 long file_len_K = 0L;
693
694 /*@ pointers *************************************************** */
695 FILE *fin = NULL;
696 size_t n = 0;
697
698 /*@ end vars *************************************************** */
699
700 malloc_string(tmp);
701 log_it("Calculating size of all biggiefiles (in total)");
702 mr_asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
703 log_it("biggielist = %s", biggielist);
704 if (!(fin = fopen(biggielist, "r"))) {
705 log_OS_error
706 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
707 } else {
708 mr_msg(4, "Reading it...");
709 for (mr_getline(&fname, &n, fin); !feof(fin);
710 mr_getline(&fname, &n, fin)) {
711 if (fname[strlen(fname) - 1] <= 32) {
712 fname[strlen(fname) - 1] = '\0';
713 }
714 if (0 == strncmp(fname, "/dev/", 5)) {
715 if (is_dev_an_NTFS_dev(fname)) {
716 if ( !find_home_of_exe("ntfsresize")) {
717 fatal_error("ntfsresize not found");
718 }
719 mr_asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
720 log_it("command = %s", command);
721 strcpy (tmp, call_program_and_get_last_line_of_output(command));
722 mr_free(command);
723
724 log_it("res of it = %s", tmp);
725 file_len_K = atoll(tmp) / 1024L;
726 } else {
727 file_len_K = get_phys_size_of_drive(fname) * 1024L;
728 }
729 } else {
730 /* BERLIOS: more than long here ??? */
731 file_len_K = (long) (length_of_file(fname) / 1024);
732 }
733 if (file_len_K > 0) {
734 scratchL += file_len_K;
735 mr_msg(4, "%s --> %ld K", fname, file_len_K);
736 }
737 mr_asprintf(&comment,
738 "After adding %s, scratchL+%ld now equals %ld", fname,
739 file_len_K, scratchL);
740 mr_msg(4, comment);
741 mr_free(comment);
742
743 if (feof(fin)) {
744 break;
745 }
746 }
747 mr_free(fname);
748 }
749 mr_free(biggielist);
750
751 log_it("Closing...");
752 paranoid_fclose(fin);
753 log_it("Finished calculating total size of all biggiefiles");
754 mr_free(tmp);
755 return (scratchL);
756}
757
758/**
759 * Determine the amount of space (in KB) occupied by a mounted CD.
760 * This can also be used to find the space used for other directories.
761 * @param mountpt The mountpoint/directory to check.
762 * @return The amount of space occupied in KB.
763 */
764long long space_occupied_by_cd(char *mountpt)
765{
766 /*@ buffer ****************************************************** */
767 char *tmp = NULL;
768 char *command = NULL;
769 long long llres;
770 size_t n = 0;
771 /*@ pointers **************************************************** */
772 char *p = NULL;
773 FILE *fin = NULL;
774
775 /*@ end vars *************************************************** */
776
777 mr_asprintf(&command, "du -sk %s", mountpt);
778 errno = 0;
779 fin = popen(command, "r");
780 if (errno) {
781 log_it("popen() FAILED: command=%s, mountpt=%s, fin=%d, errno=%d, strerror=%s", command, mountpt, fin, errno, strerror(errno));
782 llres = 0;
783 } else {
784 mr_getline(&tmp, &n, fin);
785 paranoid_pclose(fin);
786 p = strchr(tmp, '\t');
787 if (p) {
788 *p = '\0';
789 }
790 for (p = tmp, llres = 0; *p != '\0'; p++) {
791 llres *= 10;
792 llres += (int) (*p - '0');
793 }
794 }
795
796 mr_free(command);
797 mr_free(tmp);
798 return (llres);
799}
800
801
802/**
803 * Update a CRC checksum to include another character.
804 * @param crc The original CRC checksum.
805 * @param c The character to add.
806 * @return The new CRC checksum.
807 * @ingroup utilityGroup
808 */
809unsigned int updcrc(unsigned int crc, unsigned int c)
810{
811 unsigned int tmp;
812 tmp = (crc >> 8) ^ c;
813 crc = (crc << 8) ^ crctttab[tmp & 255];
814 return crc;
815}
816
817
818/**
819 * Update a reverse CRC checksum to include another character.
820 * @param crc The original CRC checksum.
821 * @param c The character to add.
822 * @return The new CRC checksum.
823 * @ingroup utilityGroup
824 */
825unsigned int updcrcr(unsigned int crc, unsigned int c)
826{
827 unsigned int tmp;
828 tmp = crc ^ c;
829 crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
830 return crc;
831}
832
833
834/**
835 * Check for an executable on the user's system; write a message to the
836 * screen and the log if we can't find it.
837 * @param fname The executable basename to look for.
838 * @return 0 if it's found, nonzero if not.
839 */
840int whine_if_not_found(char *fname)
841{
842 /*@ buffers *** */
843 char *command;
844 char *errorstr;
845 int res = 0;
846
847
848 mr_asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
849 res = system(command);
850 mr_free(command);
851
852 if (res) {
853 mr_asprintf(&errorstr,
854 _("Please install '%s'. I cannot find it on your system."),
855 fname);
856 log_to_screen(errorstr);
857 mr_free(errorstr);
858 log_to_screen
859 (_("There may be an hyperlink at http://www.mondorescue.org which"));
860 log_to_screen(_("will take you to the relevant (missing) package."));
861 return (1);
862 } else {
863 return (0);
864 }
865}
866
867
868/**
869 * Create a data file at @p fname containing @p contents.
870 * The data actually can be multiple lines, despite the name.
871 * @param fname The file to create.
872 * @param contents The data to put in it.
873 * @return 0 for success, 1 for failure.
874 */
875int write_one_liner_data_file(char *fname, char *contents)
876{
877 /*@ pointers *************************************************** */
878 FILE *fout;
879 int res = 0;
880
881 /*@ end vars *************************************************** */
882
883 assert_string_is_neither_NULL_nor_zerolength(fname);
884 if (!contents) {
885 log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
886 }
887 if (!(fout = fopen(fname, "w"))) {
888 log_it("fname=%s");
889 log_OS_error("Unable to openout fname");
890 return (1);
891 }
892 fprintf(fout, "%s\n", contents);
893 paranoid_fclose(fout);
894 return (res);
895}
896
897
898/**
899 * Read @p fname into @p contents.
900 * @param fname The file to read.
901 * @param contents Where to put its contents.
902 * @return 0 for success, nonzero for failure.
903 */
904int read_one_liner_data_file(char *fname, char *contents)
905{
906 /*@ pointers *************************************************** */
907 FILE *fin;
908 int res = 0;
909 int i;
910
911 /*@ end vars *************************************************** */
912
913 assert_string_is_neither_NULL_nor_zerolength(fname);
914 if (!contents) {
915 log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
916 }
917 if (!(fin = fopen(fname, "r"))) {
918 log_it("fname=%s", fname);
919 log_OS_error("Unable to openin fname");
920 return (1);
921 }
922 fscanf(fin, "%s\n", contents);
923 i = strlen(contents);
924 if (i > 0 && contents[i - 1] < 32) {
925 contents[i - 1] = '\0';
926 }
927 paranoid_fclose(fin);
928 return (res);
929}
930
931
932/**
933 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
934 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
935 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
936 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
937 * @param bkpinfo The backup information structure. Fields used:
938 * - @c bkpinfo->postnuke_tarball
939 * - @c bkpinfo->scratchdir
940 * - @c bkpinfo->tmpdir
941 */
942void copy_mondo_and_mindi_stuff_to_scratchdir(struct s_bkpinfo *bkpinfo)
943{
944 /*@ Char buffers ** */
945 char *command = NULL;
946 char *tmp = NULL;
947 char old_pwd[MAX_STR_LEN];
948
949 mvaddstr_and_log_it(g_currentY, 0,
950 "Copying Mondo's core files to the scratch directory");
951
952 /* BERLIOS: Why do we need to do it here as well ? */
953 mr_msg(4, "g_mondo_home='%s'", g_mondo_home);
954 if (strlen(g_mondo_home) < 2) {
955 find_and_store_mondoarchives_home(g_mondo_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 /* i18n */
967 mr_asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
968 mr_msg(4, "command = %s", command);
969 run_program_and_log_output(command, 1);
970 mr_free(command);
971
972 mr_asprintf(&tmp, "%s/payload.tgz", g_mondo_home);
973 if (does_file_exist(tmp)) {
974 log_it("Untarring payload %s to scratchdir %s", tmp,
975 bkpinfo->scratchdir);
976 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
977 chdir(bkpinfo->scratchdir);
978 mr_asprintf(&command, "tar -zxvf %s", tmp);
979 if (run_program_and_log_output(command, FALSE)) {
980 fatal_error("Failed to untar payload");
981 }
982 mr_free(command);
983 chdir(old_pwd);
984 }
985 mr_free(tmp);
986
987 mr_asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
988 bkpinfo->scratchdir);
989 if (run_program_and_log_output(command, FALSE)) {
990 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
991 }
992 mr_free(command);
993
994 mr_asprintf(&tmp,call_program_and_get_last_line_of_output("which mondorestore"));
995 if (!tmp) {
996 fatal_error
997 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
998 }
999 mr_asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
1000 mr_free(tmp);
1001
1002 if (run_program_and_log_output(command, FALSE)) {
1003 fatal_error("Failed to copy mondorestore to tmpdir");
1004 }
1005 mr_free(command);
1006
1007 mr_asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1008 paranoid_system(command);
1009 mr_free(command);
1010
1011 if (bkpinfo->postnuke_tarball[0]) {
1012 mr_asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1013 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1014 if (run_program_and_log_output(command, FALSE)) {
1015 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1016 }
1017 mr_free(command);
1018 }
1019
1020 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1021}
1022
1023
1024/**
1025 * Store the client's NFS configuration in files to be restored at restore-time.
1026 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1027 * @param bkpinfo The backup information structure. Fields used:
1028 * - @c nfs_mount
1029 * - @c nfs_remote_dir
1030 * - @c tmpdir
1031 */
1032void store_nfs_config(struct s_bkpinfo *bkpinfo)
1033{
1034
1035 /*@ buffers ******** */
1036 char nfs_dev[MAX_STR_LEN];
1037 char mac_addr[MAX_STR_LEN];
1038 char nfs_mount[MAX_STR_LEN];
1039 char nfs_client_ipaddr[MAX_STR_LEN];
1040 char nfs_client_netmask[MAX_STR_LEN];
1041 char nfs_client_broadcast[MAX_STR_LEN];
1042 char nfs_client_defgw[MAX_STR_LEN];
1043 char nfs_server_ipaddr[MAX_STR_LEN];
1044 char *tmp = NULL;
1045 char *command = NULL;
1046
1047 FILE *fd1 = NULL;
1048
1049 /*@ pointers ***** */
1050 char *p;
1051
1052 log_it("Storing NFS configuration");
1053 mr_asprintf(&tmp, bkpinfo->nfs_mount);
1054 p = strchr(tmp, ':');
1055 if (!p) {
1056 fatal_error
1057 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1058 }
1059 *p = '\0';
1060 p++;
1061 strcpy(nfs_server_ipaddr, tmp);
1062 strcpy(nfs_mount, p);
1063 mr_free(tmp);
1064
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 strcpy(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 strcpy(nfs_client_ipaddr,
1074 call_program_and_get_last_line_of_output(command));
1075 mr_free(command);
1076
1077 mr_asprintf(&command,
1078 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1079 strcpy(nfs_client_netmask,
1080 call_program_and_get_last_line_of_output(command));
1081 mr_free(command);
1082
1083 mr_asprintf(&command,
1084 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1085 strcpy(nfs_client_broadcast,
1086 call_program_and_get_last_line_of_output(command));
1087 mr_free(command);
1088
1089 mr_asprintf(&command,
1090 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1091 strcpy(nfs_client_defgw,
1092 call_program_and_get_last_line_of_output(command));
1093 mr_free(command);
1094
1095 mr_asprintf(&tmp,
1096 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1097 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1098 log_it(tmp);
1099 mr_free(tmp);
1100
1101 if (strlen(nfs_dev) < 2) {
1102 fatal_error
1103 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1104 }
1105 /********
1106 * If the NFS device that found above is a bonded device,
1107 * we need to replace it with an ethN device or the
1108 * networking will not start during an NFS restore.
1109 *
1110 * If the NFS device in nfs_dev begins with the word "bond",
1111 * look for the corresponding slave ethN device and copy it to nfs_dev.
1112 * Using the common MAC address
1113 ********/
1114 if (!strncmp(nfs_dev, "bond", 4)) {
1115 log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1116 mr_asprintf(&command,
1117 "ifconfig %s | awk '{print $5}' | head -n1", nfs_dev);
1118 strcpy(mac_addr, call_program_and_get_last_line_of_output(command));
1119 mr_free(command);
1120
1121 mr_asprintf(&command,
1122 "ifconfig | grep -E '%s' | grep -v '%s' | head -n1 | cut -d' ' -f1", mac_addr,nfs_dev);
1123 strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1124 mr_free(command);
1125
1126 log_to_screen("Replacing it with %s\n", nfs_dev);
1127 }
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[0] && (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 char *q = NULL;
1219
1220 q = strrchr(filename, '.');
1221 if (q == NULL) {
1222 return (FALSE);
1223 }
1224
1225 mr_asprintf(&tmp, "%s/do-not-compress-these", g_mondo_home);
1226 if (!does_file_exist(tmp)) {
1227 mr_free(tmp);
1228 return (FALSE);
1229 }
1230 malloc_string(do_not_compress_these);
1231 /* BERLIOS: This is just plain WRONG !! */
1232 strcpy(do_not_compress_these,last_line_of_file(tmp));
1233 mr_free(tmp);
1234
1235 for (p = do_not_compress_these; p != NULL; p++) {
1236 mr_asprintf(&tmp, p);
1237 if (strchr(tmp, ' ')) {
1238 *(strchr(tmp, ' ')) = '\0';
1239 }
1240 if (!strcmp(q, tmp)) {
1241 mr_free(do_not_compress_these);
1242 mr_free(tmp);
1243 return (TRUE);
1244 }
1245 mr_free(tmp);
1246
1247 if (!(p = strchr(p, ' '))) {
1248 break;
1249 }
1250 }
1251 mr_free(do_not_compress_these);
1252 return (FALSE);
1253}
1254
1255
1256int mode_of_file(char *fname)
1257{
1258 struct stat buf;
1259
1260 if (lstat(fname, &buf)) {
1261 return (-1);
1262 } // error
1263 else {
1264 return (buf.st_mode);
1265 }
1266}
1267
1268
1269/**
1270 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1271 * @param outfile Where to put the script.
1272 * @return 0 for success, 1 for failure.
1273 */
1274int make_grub_install_scriptlet(char *outfile)
1275{
1276 FILE *fout = NULL;
1277 char *tmp = NULL;
1278 int retval = 0;
1279
1280 if ((fout = fopen(outfile, "w"))) {
1281 fprintf(fout,
1282 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1283 paranoid_fclose(fout);
1284 mr_msg(2, "Created %s", outfile);
1285 mr_asprintf(&tmp, "chmod +x %s", outfile);
1286 paranoid_system(tmp);
1287 mr_free(tmp);
1288
1289 retval = 0;
1290 } else {
1291 retval = 1;
1292 }
1293 return (retval);
1294}
1295
1296/* @} - end fileGroup */
Note: See TracBrowser for help on using the repository browser.