source: MondoRescue/trunk/mondo/mondo/common/libmondo-files.c@ 416

Last change on this file since 416 was 416, checked in by bcornec, 18 years ago

merge -r414:415 $SVN_M/branches/stable
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File size: 36.8 KB
Line 
1/* $Id: libmondo-files.c 416 2006-02-20 18:33:30Z bcornec $
2 * file manipulation
3*/
4
5/**
6 * @file
7 * Functions to manipulate files.
8 */
9
10
11#include "my-stuff.h"
12#include "mondostructures.h"
13#include "libmondo-files.h"
14
15#include "lib-common-externs.h"
16
17#include "libmondo-tools-EXT.h"
18#include "libmondo-gui-EXT.h"
19#include "libmondo-devices-EXT.h"
20#include "libmondo-fork-EXT.h"
21#include "libmondo-string-EXT.h"
22
23/*@unused@*/
24//static char cvsid[] = "$Id: libmondo-files.c 416 2006-02-20 18:33:30Z bcornec $";
25
26extern char err_log_lines[NOOF_ERR_LINES][MAX_STR_LEN];
27
28extern int g_currentY;
29extern char *g_mondo_home;
30
31/**
32 * @addtogroup fileGroup
33 * @{
34 */
35/**
36 * Get an md5 checksum of the specified file.
37 * @param filename The file to checksum.
38 * @return The 32-character ASCII representation of the 128-bit checksum.
39 * @note The returned string points to static storage that will be overwritten with each call.
40 */
41char *calc_checksum_of_file(char *filename)
42{
43 /*@ buffers ***************************************************** */
44 static char *output = NULL;
45 char *command;
46 char *tmp;
47 size_t n = 0;
48
49 /*@ pointers **************************************************** */
50 char *p;
51 FILE *fin;
52
53 /*@ initialize pointers ***************************************** */
54
55 p = output;
56
57 /*@************************************************************** */
58
59 assert_string_is_neither_NULL_nor_zerolength(filename);
60
61 if (does_file_exist(filename)) {
62 asprintf(&command, "md5sum \"%s\"", filename);
63 fin = popen(command, "r");
64 paranoid_free(command);
65
66 if (fin) {
67 (void) getline(&output, &n, fin);
68 p = strchr(output, ' ');
69 paranoid_pclose(fin);
70 }
71 } else {
72 asprintf(&tmp, "File '%s' not found; cannot calc checksum",
73 filename);
74 log_it(tmp);
75 paranoid_free(tmp);
76 }
77 if (p) {
78 *p = '\0';
79 }
80 return (output);
81}
82
83
84/**
85 * Get a not-quite-unique representation of some of the file's @c stat properties.
86 * The returned string has the form <tt>size-mtime-ctime</tt>.
87 * @param curr_fname The file to generate the "checksum" for.
88 * @return The "checksum".
89 * @note The returned string points to static storage that will be overwritten with each call.
90 */
91char *calc_file_ugly_minichecksum(char *curr_fname)
92{
93
94 /*@ buffers ***************************************************** */
95 char *curr_cksum;
96
97 /*@ pointers **************************************************** */
98
99 /*@ structures ************************************************** */
100 struct stat buf;
101
102 /*@************************************************************** */
103
104 assert_string_is_neither_NULL_nor_zerolength(curr_fname);
105 if (lstat(curr_fname, &buf)) {
106 asprintf(&curr_cksum, "");
107 } else {
108 asprintf(&curr_cksum, "%ld-%ld-%ld", (long) (buf.st_size),
109 (long) (buf.st_mtime), (long) (buf.st_ctime));
110 }
111 return (curr_cksum);
112}
113
114
115/**
116 * Get the number of lines in @p filename.
117 * @param filename The file to count lines in.
118 * @return The number of lines in @p filename.
119 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
120 */
121long count_lines_in_file(char *filename)
122{
123
124 /*@ buffers ***************************************************** */
125 char *command;
126 char *incoming = NULL;
127 char *tmp;
128
129 /*@ long ******************************************************** */
130 long noof_lines = -1L;
131
132 /*@ int ******************************************************** */
133 size_t n = 0;
134
135 /*@ pointers **************************************************** */
136 FILE *fin;
137
138 assert_string_is_neither_NULL_nor_zerolength(filename);
139 if (!does_file_exist(filename)) {
140 asprintf(&tmp,
141 "%s does not exist, so I cannot found the number of lines in it",
142 filename);
143 log_it(tmp);
144 paranoid_free(tmp);
145 return (0);
146 }
147 asprintf(&command, "cat %s | wc -l", filename);
148 if (!does_file_exist(filename)) {
149 return (-1);
150 }
151 fin = popen(command, "r");
152 paranoid_free(command);
153
154 if (fin) {
155 if (feof(fin)) {
156 noof_lines = 0;
157 } else {
158 (void) getline(&incoming, &n, fin);
159 while (strlen(incoming) > 0
160 && incoming[strlen(incoming) - 1] < 32) {
161 incoming[strlen(incoming) - 1] = '\0';
162 }
163 noof_lines = atol(incoming);
164 paranoid_free(incoming);
165 }
166 paranoid_pclose(fin);
167 }
168 return (noof_lines);
169}
170
171
172/**
173 * Check for existence of given @p filename.
174 * @param filename The file to check for.
175 * @return TRUE if it exists, FALSE otherwise.
176 */
177bool does_file_exist(char *filename)
178{
179
180 /*@ structures ************************************************** */
181 struct stat buf;
182
183 /*@************************************************************** */
184
185 assert(filename != NULL);
186
187 if (lstat(filename, &buf)) {
188 log_msg(20, "%s does not exist", filename);
189 return (FALSE);
190 } else {
191 log_msg(20, "%s exists", filename);
192 return (TRUE);
193 }
194}
195
196
197/**
198 * Modify @p inout (a file containing a list of files) to only contain files
199 * that exist.
200 * @param inout The filelist to operate on.
201 * @note The original file is renamed beforehand, so it will not be accessible
202 * while the modification is in progress.
203 */
204void exclude_nonexistent_files(char *inout)
205{
206 char *infname;
207 char *outfname;
208 char *tmp;
209 char *incoming = NULL;
210
211 /*@ int ********************************************************* */
212 int i;
213 size_t n = 0;
214
215 /*@ pointers **************************************************** */
216 FILE *fin, *fout;
217
218
219 /*@ end vars *********************************************************** */
220
221 assert_string_is_neither_NULL_nor_zerolength(inout);
222
223 asprintf(&infname, "%s.in", inout);
224
225 asprintf(&tmp, "cp -f %s %s", inout, infname);
226 run_program_and_log_output(tmp, FALSE);
227 paranoid_free(tmp);
228
229 if (!(fin = fopen(infname, "r"))) {
230 log_OS_error("Unable to openin infname");
231 paranoid_free(infname);
232 return;
233 }
234
235 asprintf(&outfname, "%s", inout);
236 if (!(fout = fopen(outfname, "w"))) {
237 log_OS_error("Unable to openout outfname");
238 paranoid_free(outfname);
239 return;
240 }
241 paranoid_free(outfname);
242
243 for (getline(&incoming, &n, fin); !feof(fin);
244 getline(&incoming, &n, fin)) {
245 i = strlen(incoming) - 1;
246 if (i >= 0 && incoming[i] < 32) {
247 incoming[i] = '\0';
248 }
249 if (does_file_exist(incoming)) {
250 fprintf(fout, "%s\n", incoming);
251 } else {
252 asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
253 log_it(tmp);
254 paranoid_free(tmp);
255 }
256 }
257 paranoid_free(incoming);
258 paranoid_fclose(fout);
259 paranoid_fclose(fin);
260 unlink(infname);
261 paranoid_free(infname);
262}
263
264
265/**
266 * Attempt to find the user's kernel by calling Mindi.
267 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
268 * don't do anything.
269 * @param kernel Where to put the found kernel.
270 * @return 0 for success, 1 for failure.
271 */
272int figure_out_kernel_path_interactively_if_necessary(char *kernel)
273{
274 char *tmp;
275 char *command;
276
277 if (!kernel[0]) {
278 strcpy(kernel,
279 call_program_and_get_last_line_of_output
280 ("mindi --findkernel 2> /dev/null"));
281 }
282 // If we didn't get anything back, check whether mindi raised a fatal error
283 if (!kernel[0]) {
284 asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
285 asprintf(&tmp, call_program_and_get_last_line_of_output(command));
286 if (strlen(tmp) > 1) {
287 popup_and_OK(tmp);
288 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
289 }
290 paranoid_free(command);
291 paranoid_free(tmp);
292 }
293 log_it("Calling Mindi with kernel path of '%s'", kernel);
294 while (!kernel[0]) {
295 if (!ask_me_yes_or_no
296 ("Kernel not found or invalid. Choose another?")) {
297 return (1);
298 }
299 if (!popup_and_get_string
300 ("Kernel path",
301 "What is the full path and filename of your kernel, please?",
302 kernel, MAX_STR_LEN / 4)) {
303 fatal_error
304 ("Kernel not found. Please specify with the '-k' flag.");
305 }
306 asprintf(&tmp, "User says kernel is at %s", kernel);
307 log_it(tmp);
308 paranoid_free(tmp);
309 }
310 return (0);
311}
312
313
314/**
315 * Find location of specified executable in user's PATH.
316 * @param fname The basename of the executable to search for (e.g. @c afio).
317 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
318 * @note The returned string points to static storage that will be overwritten with each call.
319 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
320 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
321 * to nothing.
322 */
323char *find_home_of_exe(char *fname)
324{
325 /*@ buffers ********************* */
326 static char output[MAX_STR_LEN];
327 char *incoming;
328 char *command;
329
330 /*@******************************* */
331
332 assert_string_is_neither_NULL_nor_zerolength(fname);
333 asprintf(&command, "which %s 2> /dev/null", fname);
334 asprintf(&incoming, call_program_and_get_last_line_of_output(command));
335 paranoid_free(command);
336
337 if (incoming[0] == '\0') {
338 if (system("which file > /dev/null 2> /dev/null")) {
339 paranoid_free(incoming);
340 return (NULL); // forget it :)
341 }
342 asprintf(&command,
343 "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
344 incoming);
345 paranoid_free(incoming);
346
347 asprintf(&incoming,
348 call_program_and_get_last_line_of_output(command));
349 paranoid_free(command);
350 }
351 if (incoming[0] == '\0') // yes, it is == '\0' twice, not once :)
352 {
353 asprintf(&command, "dirname %s 2> /dev/null", incoming);
354 paranoid_free(incoming);
355
356 asprintf(&incoming,
357 call_program_and_get_last_line_of_output(command));
358 paranoid_free(command);
359 }
360 strcpy(output, incoming);
361 paranoid_free(incoming);
362
363 if (output[0] != '\0' && does_file_exist(output)) {
364 log_msg(4, "find_home_of_exe () --- Found %s at %s", fname,
365 output);
366 } else {
367 output[0] = '\0';
368 log_msg(4, "find_home_of_exe() --- Could not find %s", fname);
369 }
370 if (!output[0]) {
371 return (NULL);
372 } else {
373 return (output);
374 }
375}
376
377
378/**
379 * Get the last sequence of digits surrounded by non-digits in the first 32k of
380 * a file.
381 * @param logfile The file to look in.
382 * @return The number found, or 0 if none.
383 */
384int get_trackno_from_logfile(char *logfile)
385{
386
387 /*@ pointers ********************************************************* */
388 FILE *fin;
389
390 /*@ int ************************************************************** */
391 int trackno = 0;
392 size_t len = 0;
393
394 /*@ buffer ************************************************************ */
395 char datablock[32701];
396
397 assert_string_is_neither_NULL_nor_zerolength(logfile);
398
399 if (!(fin = fopen(logfile, "r"))) {
400 log_OS_error("Unable to open logfile");
401 fatal_error("Unable to open logfile to read trackno");
402 }
403 len = fread(datablock, 1, 32700, fin);
404 paranoid_fclose(fin);
405 if (len <= 0) {
406 return (0);
407 }
408 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
409 datablock[len--] = '\0';
410 for (; len > 0 && isdigit(datablock[len - 1]); len--);
411 trackno = atoi(datablock + len);
412 return (trackno);
413}
414
415
416/**
417 * Get a percentage from the last line of @p filename. We look for the string
418 * "% done" on the last line and, if we find it, grab the number before the last % sign.
419 * @param filename The file to get the percentage from.
420 * @return The percentage found, or 0 for error.
421 */
422int grab_percentage_from_last_line_of_file(char *filename)
423{
424
425 /*@ buffers ***************************************************** */
426 char *lastline;
427 char *command;
428 /*@ pointers **************************************************** */
429 char *p;
430
431 /*@ int's ******************************************************* */
432 int i;
433
434 for (i = NOOF_ERR_LINES - 1;
435 i >= 0 && !strstr(err_log_lines[i], "% Done")
436 && !strstr(err_log_lines[i], "% done"); i--);
437 if (i < 0) {
438 asprintf(&command,
439 "tail -n3 %s | fgrep -i \"%c\" | tail -n1 | awk '{print $0;}'",
440 filename, '%');
441 asprintf(&lastline,
442 call_program_and_get_last_line_of_output(command));
443 paranoid_free(command);
444 if (!lastline[0]) {
445 paranoid_free(lastline);
446 return (0);
447 }
448 } else {
449 asprintf(&lastline, err_log_lines[i]);
450 }
451
452 p = strrchr(lastline, '%');
453 if (p) {
454 *p = '\0';
455 }
456 if (!p) {
457 paranoid_free(lastline);
458 return (0);
459 }
460 *p = '\0';
461 for (p--; *p != ' ' && p != lastline; p--);
462 if (p != lastline) {
463 p++;
464 }
465 i = atoi(p);
466 paranoid_free(lastline);
467
468 return (i);
469}
470
471
472/**
473 * Return the last line of @p filename.
474 * @param filename The file to get the last line of.
475 * @return The last line of the file.
476 * @note The returned string points to static storage that will be overwritten with each call.
477 */
478char *last_line_of_file(char *filename)
479{
480 /*@ buffers ***************************************************** */
481 static char output[MAX_STR_LEN];
482 static char *command;
483 static char *tmp;
484
485 /*@ pointers **************************************************** */
486 FILE *fin;
487
488 /*@ end vars **************************************************** */
489
490 if (!does_file_exist(filename)) {
491 asprintf(&tmp, "Tring to get last line of nonexistent file (%s)",
492 filename);
493 log_it(tmp);
494 paranoid_free(tmp);
495
496 output[0] = '\0';
497 return (output);
498 }
499 asprintf(&command, "tail -n1 %s", filename);
500 fin = popen(command, "r");
501 paranoid_free(command);
502
503 (void) fgets(output, MAX_STR_LEN, fin);
504 paranoid_pclose(fin);
505 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
506 output[strlen(output) - 1] = '\0';
507 }
508 return (output);
509}
510
511
512/**
513 * Get the length of @p filename in bytes.
514 * @param filename The file to get the length of.
515 * @return The length of the file, or -1 for error.
516 */
517long long length_of_file(char *filename)
518{
519 /*@ pointers *************************************************** */
520 FILE *fin;
521
522 /*@ long long ************************************************* */
523 long long length;
524
525 fin = fopen(filename, "r");
526 if (!fin) {
527 log_it("filename=%s", filename);
528 log_OS_error("Unable to openin filename");
529 return (-1);
530 }
531 fseeko(fin, 0, SEEK_END);
532 length = ftell(fin);
533 paranoid_fclose(fin);
534 return (length);
535}
536
537
538/**
539 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
540 * @param outdir_fname The directory to create.
541 * @return The return value of @c mkdir.
542 */
543/* BERLIOS: This function shouldn't call system at all */
544int make_hole_for_dir(char *outdir_fname)
545{
546 char *tmp;
547 int res = 0;
548
549 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
550 asprintf(&tmp, "mkdir -p %s", outdir_fname);
551 res = system(tmp);
552 paranoid_free(tmp);
553 return (res);
554}
555
556
557/**
558 * Create the parent directories of @p outfile_fname.
559 * @param outfile_fname The file to make a "hole" for.
560 * @return 0, always.
561 * @bug Return value unnecessary.
562 */
563/* BERLIOS: This function shouldn't call system at all */
564int make_hole_for_file(char *outfile_fname)
565{
566 /*@ buffer ****************************************************** */
567 char *command;
568
569 /*@ int ******************************************************** */
570 int res = 0;
571
572 /*@ end vars *************************************************** */
573
574 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
575 assert(!strstr(outfile_fname, MNT_CDROM));
576 assert(!strstr(outfile_fname, "/dev/cdrom"));
577
578 asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
579 res += system(command);
580 paranoid_free(command);
581
582 asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
583 res += system(command);
584 paranoid_free(command);
585
586 asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
587 res += system(command);
588 paranoid_free(command);
589 unlink(outfile_fname);
590 return (0);
591}
592
593
594/**
595 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
596 * @param filelist_fname The file to search through.
597 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
598 * @return The number of lines matched.
599 */
600long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
601{
602 /*@ long ******************************************************* */
603 long matches = 0;
604
605 /*@ pointers *************************************************** */
606 FILE *fin;
607
608 /*@ buffers **************************************************** */
609 char *incoming = NULL;
610
611 size_t n = 0;
612 /*@ end vars *************************************************** */
613
614
615 fin = fopen(filelist_fname, "r");
616
617 if (!fin) {
618 log_OS_error("Unable to openin filelist_fname");
619 return (0);
620 }
621 (void) getline(&incoming, &n, fin);
622 while (!feof(fin)) {
623 if (strstr(incoming, wildcard)) {
624 matches++;
625 }
626 (void) getline(&incoming, &n, fin);
627 }
628 paranoid_fclose(fin);
629 paranoid_free(incoming);
630 return (matches);
631}
632
633
634/**
635 * Register our PID in a file in /var/run.
636 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
637 * @param pid 0 to remove file, anything else to create it.
638 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
639 * @note This function does not provide support against multiple instances, unless you check for that yourself.
640 */
641void register_pid(pid_t pid, char *name_str)
642{
643 char *tmp;
644 char *lockfile_fname;
645 int res;
646 size_t n = 0;
647 FILE *fin;
648
649 asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
650 if (!pid) {
651 log_it("Unregistering PID");
652 if (unlink(lockfile_fname)) {
653 log_it("Error unregistering PID");
654 }
655 paranoid_free(lockfile_fname);
656 return;
657 }
658 if (does_file_exist(lockfile_fname)) {
659 if ((fin = fopen(lockfile_fname, "r"))) {
660 (void) getline(&tmp, &n, fin);
661 paranoid_fclose(fin);
662 } else {
663 log_OS_error("Unable to openin lockfile_fname");
664 }
665 pid = (pid_t) atol(tmp);
666 paranoid_free(tmp);
667
668 asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
669 res = system(tmp);
670 paranoid_free(tmp);
671 if (!res) {
672 log_it
673 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
674 lockfile_fname);
675 }
676 }
677 asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
678 lockfile_fname);
679 paranoid_free(lockfile_fname);
680
681 if (system(tmp)) {
682 fatal_error("Cannot register PID");
683 }
684 paranoid_free(tmp);
685 return;
686}
687
688
689/**
690 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
691 * @param tmpdir The tempdir where the mountlist is stored.
692 * @param dev The device to search for.
693 * @return The size of the partition in KB.
694 */
695long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
696{
697 char *command;
698 char *sz_res;
699 long file_len_K;
700
701 asprintf(&command,
702 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
703 dev, tmpdir);
704 log_it(command);
705 asprintf(&sz_res, call_program_and_get_last_line_of_output(command));
706 file_len_K = atol(sz_res);
707 log_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
708 paranoid_free(command);
709 paranoid_free(sz_res);
710 return (file_len_K);
711}
712
713
714/**
715 * Calculate the total size (in KB) of all the biggiefiles in this backup.
716 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
717 * @return The total size of all biggiefiles in KB.
718 */
719long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
720{
721 /*@ buffers ***************************************************** */
722 char *fname;
723 char *biggielist;
724 char *comment;
725 char *tmp;
726 char *command;
727
728 /*@ long ******************************************************** */
729 long scratchL = 0;
730 long file_len_K;
731
732 /*@ pointers *************************************************** */
733 FILE *fin = NULL;
734 size_t n = 0;
735
736 /*@ end vars *************************************************** */
737
738 malloc_string(tmp);
739 malloc_string(command);
740 log_it("Calculating size of all biggiefiles (in total)");
741 asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
742 log_it("biggielist = %s", biggielist);
743 if (!(fin = fopen(biggielist, "r"))) {
744 log_OS_error
745 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
746 } else {
747 log_msg(4, "Reading it...");
748 for (getline(&fname, &n, fin); !feof(fin);
749 getline(&fname, &n, fin)) {
750 if (fname[strlen(fname) - 1] <= 32) {
751 fname[strlen(fname) - 1] = '\0';
752 }
753 if (0 == strncmp(fname, "/dev/", 5)) {
754 if (is_dev_an_NTFS_dev(fname)) {
755 if ( !find_home_of_exe("ntfsresize")) {
756 fatal_error("ntfsresize not found");
757 }
758 sprintf(command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
759 log_it("command = %s", command);
760 strcpy (tmp, call_program_and_get_last_line_of_output(command));
761 log_it("res of it = %s", tmp);
762 file_len_K = atoll(tmp) / 1024L;
763 } else {
764 file_len_K = get_phys_size_of_drive(fname) * 1024L;
765 }
766 } else {
767 file_len_K = (long) (length_of_file(fname) / 1024);
768 }
769 if (file_len_K > 0) {
770 scratchL += file_len_K;
771 log_msg(4, "%s --> %ld K", fname, file_len_K);
772 }
773 asprintf(&comment,
774 "After adding %s, scratchL+%ld now equals %ld", fname,
775 file_len_K, scratchL);
776 log_msg(4, comment);
777 paranoid_free(comment);
778
779 if (feof(fin)) {
780 break;
781 }
782 }
783 paranoid_free(fname);
784 }
785 paranoid_free(biggielist);
786
787 log_it("Closing...");
788 paranoid_fclose(fin);
789 log_it("Finished calculating total size of all biggiefiles");
790 paranoid_free(tmp);
791 paranoid_free(command);
792 return (scratchL);
793}
794
795
796/**
797 * Determine the amount of space (in KB) occupied by a mounted CD.
798 * This can also be used to find the space used for other directories.
799 * @param mountpt The mountpoint/directory to check.
800 * @return The amount of space occupied in KB.
801 */
802long long space_occupied_by_cd(char *mountpt)
803{
804 /*@ buffer ****************************************************** */
805 char *tmp = NULL;
806 char *command;
807 long long llres;
808 size_t n = 0;
809 /*@ pointers **************************************************** */
810 char *p;
811 FILE *fin;
812
813 /*@ end vars *************************************************** */
814
815 asprintf(&command, "du -sk %s", mountpt);
816 fin = popen(command, "r");
817 paranoid_free(command);
818
819 (void) getline(&tmp, &n, fin);
820 paranoid_pclose(fin);
821 p = strchr(tmp, '\t');
822 if (p) {
823 *p = '\0';
824 }
825 for (p = tmp, llres = 0; *p != '\0'; p++) {
826 llres *= 10;
827 llres += (int) (*p - '0');
828 }
829 paranoid_free(tmp);
830 return (llres);
831}
832
833
834/**
835 * Update a CRC checksum to include another character.
836 * @param crc The original CRC checksum.
837 * @param c The character to add.
838 * @return The new CRC checksum.
839 * @ingroup utilityGroup
840 */
841unsigned int updcrc(unsigned int crc, unsigned int c)
842{
843 unsigned int tmp;
844 tmp = (crc >> 8) ^ c;
845 crc = (crc << 8) ^ crctttab[tmp & 255];
846 return crc;
847}
848
849
850/**
851 * Update a reverse CRC checksum to include another character.
852 * @param crc The original CRC checksum.
853 * @param c The character to add.
854 * @return The new CRC checksum.
855 * @ingroup utilityGroup
856 */
857unsigned int updcrcr(unsigned int crc, unsigned int c)
858{
859 unsigned int tmp;
860 tmp = crc ^ c;
861 crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
862 return crc;
863}
864
865
866/**
867 * Check for an executable on the user's system; write a message to the
868 * screen and the log if we can't find it.
869 * @param fname The executable basename to look for.
870 * @return 0 if it's found, nonzero if not.
871 */
872int whine_if_not_found(char *fname)
873{
874 /*@ buffers *** */
875 char *command;
876 char *errorstr;
877 int res = 0;
878
879
880 asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
881 res = system(command);
882 paranoid_free(command);
883
884 if (res) {
885 asprintf(&errorstr,
886 "Please install '%s'. I cannot find it on your system.",
887 fname);
888 log_to_screen(errorstr);
889 paranoid_free(errorstr);
890 log_to_screen
891 ("There may be an hyperlink at http://www.mondorescue.org which");
892 log_to_screen("will take you to the relevant (missing) package.");
893 return (1);
894 } else {
895 return (0);
896 }
897}
898
899
900/**
901 * Create a data file at @p fname containing @p contents.
902 * The data actually can be multiple lines, despite the name.
903 * @param fname The file to create.
904 * @param contents The data to put in it.
905 * @return 0 for success, 1 for failure.
906 */
907int write_one_liner_data_file(char *fname, char *contents)
908{
909 /*@ pointers *************************************************** */
910 FILE *fout;
911 int res = 0;
912
913 /*@ end vars *************************************************** */
914
915 assert_string_is_neither_NULL_nor_zerolength(fname);
916 if (!contents) {
917 log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
918 }
919 if (!(fout = fopen(fname, "w"))) {
920 log_it("fname=%s");
921 log_OS_error("Unable to openout fname");
922 return (1);
923 }
924 fprintf(fout, "%s\n", contents);
925 paranoid_fclose(fout);
926 return (res);
927}
928
929
930/**
931 * Read @p fname into @p contents.
932 * @param fname The file to read.
933 * @param contents Where to put its contents.
934 * @return 0 for success, nonzero for failure.
935 */
936int read_one_liner_data_file(char *fname, char *contents)
937{
938 /*@ pointers *************************************************** */
939 FILE *fin;
940 int res = 0;
941 int i;
942
943 /*@ end vars *************************************************** */
944
945 assert_string_is_neither_NULL_nor_zerolength(fname);
946 if (!contents) {
947 log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
948 }
949 if (!(fin = fopen(fname, "r"))) {
950 log_it("fname=%s", fname);
951 log_OS_error("Unable to openin fname");
952 return (1);
953 }
954 fscanf(fin, "%s\n", contents);
955 i = strlen(contents);
956 if (i > 0 && contents[i - 1] < 32) {
957 contents[i - 1] = '\0';
958 }
959 paranoid_fclose(fin);
960 return (res);
961}
962
963
964/**
965 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
966 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
967 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
968 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
969 * @param bkpinfo The backup information structure. Fields used:
970 * - @c bkpinfo->postnuke_tarball
971 * - @c bkpinfo->scratchdir
972 * - @c bkpinfo->tmpdir
973 */
974void copy_mondo_and_mindi_stuff_to_scratchdir(struct s_bkpinfo *bkpinfo)
975{
976 /*@ Char buffers ** */
977 char *command;
978 char *tmp;
979 char old_pwd[MAX_STR_LEN];
980
981 mvaddstr_and_log_it(g_currentY, 0,
982 "Copying Mondo's core files to the scratch directory");
983
984 /* BERLIOS: Why do we need to do it here as well ? */
985 log_msg(4, "g_mondo_home='%s'", g_mondo_home);
986 if ((g_mondo_home == NULL) || strlen(g_mondo_home) < 2) {
987 paranoid_free(g_mondo_home);
988 g_mondo_home = find_and_store_mondoarchives_home();
989 }
990 asprintf(&command, CP_BIN " --parents -pRdf %s %s", g_mondo_home,
991 bkpinfo->scratchdir);
992
993 log_msg(4, "command = %s", command);
994 if (run_program_and_log_output(command, 1)) {
995 fatal_error("Failed to copy Mondo's stuff to scratchdir");
996 }
997 paranoid_free(command);
998
999 asprintf(&tmp, "%s/payload.tgz", g_mondo_home);
1000 if (does_file_exist(tmp)) {
1001 log_it("Untarring payload %s to scratchdir %s", tmp,
1002 bkpinfo->scratchdir);
1003 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
1004 chdir(bkpinfo->scratchdir);
1005 asprintf(&command, "tar -zxvf %s", tmp);
1006 if (run_program_and_log_output(command, FALSE)) {
1007 fatal_error("Failed to untar payload");
1008 }
1009 paranoid_free(command);
1010 chdir(old_pwd);
1011 }
1012 paranoid_free(tmp);
1013
1014 asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
1015 bkpinfo->scratchdir);
1016 if (run_program_and_log_output(command, FALSE)) {
1017 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
1018 }
1019 paranoid_free(command);
1020
1021 asprintf(&tmp,
1022 call_program_and_get_last_line_of_output("which mondorestore"));
1023 if (!tmp[0]) {
1024 fatal_error
1025 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
1026 }
1027 asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
1028 paranoid_free(tmp);
1029
1030 if (run_program_and_log_output(command, FALSE)) {
1031 fatal_error("Failed to copy mondorestore to tmpdir");
1032 }
1033 paranoid_free(command);
1034
1035 asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1036 paranoid_system(command);
1037 paranoid_free(command);
1038
1039 if (bkpinfo->postnuke_tarball[0]) {
1040 asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1041 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1042 if (run_program_and_log_output(command, FALSE)) {
1043 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1044 }
1045 paranoid_free(command);
1046 }
1047
1048 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1049}
1050
1051
1052/**
1053 * Store the client's NFS configuration in files to be restored at restore-time.
1054 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1055 * @param bkpinfo The backup information structure. Fields used:
1056 * - @c nfs_mount
1057 * - @c nfs_remote_dir
1058 * - @c tmpdir
1059 */
1060void store_nfs_config(struct s_bkpinfo *bkpinfo)
1061{
1062
1063 /*@ buffers ******** */
1064 char *outfile;
1065 char *nfs_dev;
1066 char *nfs_mount;
1067 char *nfs_client_ipaddr;
1068 char *nfs_client_netmask;
1069 char *nfs_client_broadcast;;
1070 char *nfs_client_defgw;
1071 char *nfs_server_ipaddr;
1072 char *tmp;
1073 char *command;
1074
1075 /*@ pointers ***** */
1076 char *p;
1077 FILE *fout;
1078
1079
1080
1081 log_it("Storing NFS configuration");
1082 asprintf(&tmp, bkpinfo->nfs_mount);
1083 p = strchr(tmp, ':');
1084 if (!p) {
1085 fatal_error
1086 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1087 }
1088 *(p++) = '\0';
1089 asprintf(&nfs_server_ipaddr, tmp);
1090 paranoid_free(tmp);
1091
1092 asprintf(&nfs_mount, p);
1093 asprintf(&command,
1094 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1095 asprintf(&nfs_dev, call_program_and_get_last_line_of_output(command));
1096 paranoid_free(command);
1097
1098 asprintf(&command,
1099 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1100 asprintf(&nfs_client_ipaddr,
1101 call_program_and_get_last_line_of_output(command));
1102 paranoid_free(command);
1103
1104 asprintf(&command,
1105 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1106 asprintf(&nfs_client_netmask,
1107 call_program_and_get_last_line_of_output(command));
1108 paranoid_free(command);
1109
1110 asprintf(&command,
1111 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1112 strcpy(nfs_client_broadcast,
1113 call_program_and_get_last_line_of_output(command));
1114 sprintf(command,
1115 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1116 asprintf(&nfs_client_defgw,
1117 call_program_and_get_last_line_of_output(command));
1118 paranoid_free(command);
1119
1120 asprintf(&tmp,
1121 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1122 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1123 paranoid_free(nfs_mount);
1124 log_it(tmp);
1125 paranoid_free(tmp);
1126
1127 if (strlen(nfs_dev) < 2) {
1128 fatal_error
1129 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1130 }
1131 asprintf(&outfile, "%s/start-nfs", bkpinfo->tmpdir);
1132 asprintf(&tmp, "outfile = %s", outfile);
1133 log_it(tmp);
1134 paranoid_free(tmp);
1135
1136 if (!(fout = fopen(outfile, "w"))) {
1137 fatal_error("Cannot store NFS config");
1138 }
1139 fprintf(fout, "#!/bin/sh\n");
1140 fprintf(fout, "# number of ping\n");
1141 fprintf(fout, "ipcount=3\n");
1142 fprintf(fout, "for i in `cat /proc/cmdline` ; do\n");
1143 fprintf(fout, " echo $i | grep -qi ping= && ipcount=`echo $i | cut -d= -f2`\n");
1144 fprintf(fout, "done\n");
1145 fprintf(fout, "ifconfig lo 127.0.0.1 # config loopback\n");
1146 fprintf(fout, "ipaddress=%s\n", nfs_client_ipaddr);
1147 fprintf(fout, "ipnetmask=%s\n", nfs_client_netmask);
1148 fprintf(fout, "ipbroadcast=%s\n", nfs_client_broadcast);
1149 fprintf(fout, "ipgateway=%s\n", nfs_client_defgw);
1150 fprintf(fout, "ipconf=\n");
1151 fprintf(fout, "for i in `cat /proc/cmdline` ; do\n");
1152 fprintf(fout, " echo $i | grep -qi ipconf= && ipconf=`echo $i | cut -d= -f2`\n");
1153 fprintf(fout, "done\n");
1154 fprintf(fout, "if [ \"$ipconf\" = \"dhcp\" ]; then\n");
1155 fprintf(fout, " udhcpc -i %s\n", nfs_dev);
1156 fprintf(fout, "else\n");
1157 fprintf(fout, " if [ \"$ipconf\" != \"\" ]; then\n");
1158 fprintf(fout, " ipaddress=`echo $ipconf | cut -d: -f1`\n");
1159 fprintf(fout, " ipnetmask=`echo $ipconf | cut -d: -f2`\n");
1160 fprintf(fout, " ipbroadcast=`echo $ipconf | cut -d: -f3`\n");
1161 fprintf(fout, " ipgateway=`echo $ipconf | cut -d: -f4`\n");
1162 fprintf(fout, " fi\n");
1163 fprintf(fout, " ifconfig %s $ipaddress netmask $ipnetmask broadcast $ipbroadcast\n", nfs_dev);
1164 fprintf(fout, " route add default gw $ipgateway\n");
1165 fprintf(fout, "fi\n");
1166 fprintf(fout, "ping -c $ipcount %s # ping server\n", nfs_server_ipaddr);
1167 fprintf(fout, "mount -t nfs -o nolock %s /tmp/isodir\n",
1168 bkpinfo->nfs_mount);
1169 paranoid_fclose(fout);
1170 chmod(outfile, 0777);
1171 make_hole_for_dir("/var/cache/mondo-archive");
1172
1173// paranoid_system ("mkdir -p /var/cache/mondo-archive 2> /dev/null");
1174
1175 asprintf(&tmp, "cp -f %s /var/cache/mondo-archive", outfile);
1176 paranoid_free(outfile);
1177
1178 run_program_and_log_output(tmp, FALSE);
1179 paranoid_free(tmp);
1180
1181 asprintf(&tmp, "%s/NFS-DEV", bkpinfo->tmpdir);
1182 write_one_liner_data_file(tmp, nfs_dev);
1183 paranoid_free(nfs_dev);
1184 paranoid_free(tmp);
1185
1186 asprintf(&tmp, "%s/NFS-CLIENT-IPADDR", bkpinfo->tmpdir);
1187 write_one_liner_data_file(tmp, nfs_client_ipaddr);
1188 paranoid_free(nfs_client_ipaddr);
1189 paranoid_free(tmp);
1190
1191 asprintf(&tmp, "%s/NFS-CLIENT-NETMASK", bkpinfo->tmpdir);
1192 write_one_liner_data_file(tmp, nfs_client_netmask);
1193 paranoid_free(nfs_client_netmask);
1194 paranoid_free(tmp);
1195
1196 asprintf(&tmp, "%s/NFS-CLIENT-DEFGW", bkpinfo->tmpdir);
1197 write_one_liner_data_file(tmp, nfs_client_defgw);
1198 paranoid_free(nfs_client_defgw);
1199 paranoid_free(tmp);
1200
1201 asprintf(&tmp, "%s/NFS-CLIENT-BROADCAST", bkpinfo->tmpdir);
1202 write_one_liner_data_file(tmp, nfs_client_broadcast);
1203 paranoid_free(nfs_client_broadcast);
1204 paranoid_free(tmp);
1205
1206 asprintf(&tmp, "%s/NFS-SERVER-IPADDR", bkpinfo->tmpdir);
1207 write_one_liner_data_file(tmp, nfs_server_ipaddr);
1208 paranoid_free(nfs_server_ipaddr);
1209 paranoid_free(tmp);
1210
1211 asprintf(&tmp, "%s/NFS-SERVER-MOUNT", bkpinfo->tmpdir);
1212 write_one_liner_data_file(tmp, bkpinfo->nfs_mount);
1213 paranoid_free(tmp);
1214
1215 asprintf(&tmp, "%s/NFS-SERVER-PATH", bkpinfo->tmpdir);
1216 write_one_liner_data_file(tmp, bkpinfo->nfs_remote_dir);
1217 paranoid_free(tmp);
1218
1219 asprintf(&tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
1220 write_one_liner_data_file(tmp, bkpinfo->prefix);
1221 paranoid_free(tmp);
1222
1223 log_it("Finished storing NFS configuration");
1224}
1225
1226
1227/**
1228 * Determine the approximate number of media that the backup will take up,
1229 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1230 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1231 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1232 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1233 * If there are more than 50 media estimated, the estimate will not be shown.
1234 * @param bkpinfo The backup information structure. Fields used:
1235 * - @c bkpinfo->backup_media_type
1236 * - @c bkpinfo->image_devs
1237 * - @c bkpinfo->media_size
1238 * - @c bkpinfo->optimal_set_size
1239 * - @c bkpinfo->use_lzo
1240 * @param noof_sets The number of filesets created.
1241 * @ingroup archiveGroup
1242 */
1243void
1244estimate_noof_media_required(struct s_bkpinfo *bkpinfo, long noof_sets)
1245{
1246 /*@ buffers *************** */
1247 char *tmp;
1248
1249 /*@ long long ************* */
1250 long long scratchLL;
1251
1252 if (bkpinfo->media_size[1] <= 0 || bkpinfo->backup_media_type == nfs) {
1253 log_to_screen("Number of media required: UNKNOWN");
1254 return;
1255 }
1256
1257 log_it("Estimating number of media required...");
1258 scratchLL =
1259 (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1260 + (long long) (size_of_all_biggiefiles_K(bkpinfo));
1261 scratchLL = (scratchLL / 1024) / bkpinfo->media_size[1];
1262 scratchLL++;
1263 if (bkpinfo->use_lzo) {
1264 scratchLL = (scratchLL * 2) / 3;
1265 } else {
1266 scratchLL = scratchLL / 2;
1267 }
1268 if (!scratchLL) {
1269 scratchLL++;
1270 }
1271 if (scratchLL <= 1) {
1272 asprintf(&tmp,
1273 "Your backup will probably occupy a single %s. Maybe two.",
1274 media_descriptor_string(bkpinfo->backup_media_type));
1275 } else {
1276 asprintf(&tmp, "Your backup will occupy approximately %s media.",
1277 number_to_text((int) (scratchLL + 1)));
1278 }
1279 if (!bkpinfo->image_devs[0] && (scratchLL < 50)) {
1280 log_to_screen(tmp);
1281 }
1282 paranoid_free(tmp);
1283 return;
1284}
1285
1286
1287/**
1288 * Determine whether a file is compressed. This is done
1289 * by reading through the "do-not-compress-these" file distributed with Mondo.
1290 * @param filename The file to check.
1291 * @return TRUE if it's compressed, FALSE if not.
1292 */
1293bool is_this_file_compressed(char *filename)
1294{
1295 char *do_not_compress_these;
1296 char *tmp;
1297 char *p;
1298
1299 asprintf(&tmp, "%s/do-not-compress-these", g_mondo_home);
1300 if (!does_file_exist(tmp)) {
1301 paranoid_free(tmp);
1302 return (FALSE);
1303 }
1304 paranoid_free(tmp);
1305
1306 asprintf(&do_not_compress_these, last_line_of_file(tmp));
1307 for (p = do_not_compress_these; p != NULL; p++) {
1308 asprintf(&tmp, p);
1309 if (strchr(tmp, ' ')) {
1310 *(strchr(tmp, ' ')) = '\0';
1311 }
1312 if (!strcmp(strrchr(filename, '.'), tmp)) {
1313 paranoid_free(do_not_compress_these);
1314 paranoid_free(tmp);
1315 return (TRUE);
1316 }
1317 paranoid_free(tmp);
1318
1319 if (!(p = strchr(p, ' '))) {
1320 break;
1321 }
1322 }
1323 paranoid_free(do_not_compress_these);
1324 return (FALSE);
1325}
1326
1327
1328int mode_of_file(char *fname)
1329{
1330 struct stat buf;
1331
1332 if (lstat(fname, &buf)) {
1333 return (-1);
1334 } // error
1335 else {
1336 return (buf.st_mode);
1337 }
1338}
1339
1340
1341/**
1342 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1343 * @param outfile Where to put the script.
1344 * @return 0 for success, 1 for failure.
1345 */
1346int make_grub_install_scriptlet(char *outfile)
1347{
1348 FILE *fout;
1349 char *tmp;
1350 int retval = 0;
1351
1352 if ((fout = fopen(outfile, "w"))) {
1353 fprintf(fout,
1354 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1355 paranoid_fclose(fout);
1356 log_msg(2, "Created %s", outfile);
1357 asprintf(&tmp, "chmod +x %s", outfile);
1358 paranoid_system(tmp);
1359 paranoid_free(tmp);
1360
1361 retval = 0;
1362 } else {
1363 retval = 1;
1364 }
1365 return (retval);
1366}
1367
1368/* @} - end fileGroup */
1369
1370void paranoid_alloc(char *alloc, char *orig)
1371{
1372 paranoid_free(alloc);
1373 asprintf(&alloc, orig);
1374}
1375
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