source: MondoRescue/branches/stable/mondo/src/common/libmondo-files.c @ 1137

Last change on this file since 1137 was 1137, checked in by Bruno Cornec, 13 years ago

Always fixing typos

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1/* libmondo-files.c                                  file manipulation
2   $Id: libmondo-files.c 1137 2007-02-11 13:38:01Z 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 1137 2007-02-11 13:38:01Z 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    size_t n = 0;
51
52    /*@ pointers **************************************************** */
53    char *p;
54    FILE *fin;
55
56    /*@ initialize pointers ***************************************** */
57
58    p = output;
59
60    /*@************************************************************** */
61
62    assert_string_is_neither_NULL_nor_zerolength(filename);
63
64    if (does_file_exist(filename)) {
65        mr_asprintf(&command, "md5sum \"%s\"", filename);
66        fin = popen(command, "r");
67        mr_free(command);
68
69        if (fin) {
70            (void) fgets(output, MAX_STR_LEN, fin);
71            p = strchr(output, ' ');
72            paranoid_pclose(fin);
73        }
74    } else {
75        mr_asprintf(&tmp, "File '%s' not found; cannot calc checksum",
76                filename);
77        log_it(tmp);
78        mr_free(tmp);
79    }
80    if (p) {
81        *p = '\0';
82    }
83    return (output);
84}
85
86
87/**
88 * Get a not-quite-unique representation of some of the file's @c stat properties.
89 * The returned string has the form <tt>size-mtime-ctime</tt>.
90 * @param curr_fname The file to generate the "checksum" for.
91 * @return The "checksum".
92 * @note The returned string points to static storage that will be overwritten with each call.
93 */
94char *calc_file_ugly_minichecksum(char *curr_fname)
95{
96
97    /*@ buffers ***************************************************** */
98    static char curr_cksum[1000];
99
100    /*@ pointers **************************************************** */
101
102    /*@ structures ************************************************** */
103    struct stat buf;
104
105    /*@ initialize data *************************************************** */
106    curr_cksum[0] = '\0';
107
108    /*@************************************************************** */
109
110    assert_string_is_neither_NULL_nor_zerolength(curr_fname);
111    if (lstat(curr_fname, &buf)) {
112        return (curr_cksum);    // empty
113    }
114
115    sprintf(curr_cksum, "%ld-%ld-%ld", (long) (buf.st_size),
116            (long) (buf.st_mtime), (long) (buf.st_ctime));
117    return (curr_cksum);
118}
119
120
121
122/**
123 * Get the number of lines in @p filename.
124 * @param filename The file to count lines in.
125 * @return The number of lines in @p filename.
126 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
127 */
128long count_lines_in_file(char *filename)
129{
130
131    /*@ buffers ***************************************************** */
132    char *command = NULL;
133    char *incoming = NULL;
134    char *tmp = NULL;
135
136    /*@ long ******************************************************** */
137    long noof_lines = -1L;
138
139    /*@ int ******************************************************** */
140    size_t n = 0;
141
142    /*@ pointers **************************************************** */
143    FILE *fin;
144
145    assert_string_is_neither_NULL_nor_zerolength(filename);
146    if (!does_file_exist(filename)) {
147        mr_asprintf(&tmp,
148                "%s does not exist, so I cannot found the number of lines in it",
149                filename);
150        log_it(tmp);
151        mr_free(tmp);
152        return (0);
153    }
154    mr_asprintf(&command, "cat %s | wc -l", filename);
155    if (!does_file_exist(filename)) {
156        return (-1);
157    }
158    fin = popen(command, "r");
159    mr_free(command);
160
161    if (fin) {
162        if (feof(fin)) {
163            noof_lines = 0;
164        } else {
165            mr_getline(&incoming, &n, fin);
166            while (strlen(incoming) > 0
167                   && incoming[strlen(incoming) - 1] < 32) {
168                incoming[strlen(incoming) - 1] = '\0';
169            }
170            noof_lines = atol(incoming);
171            mr_free(incoming);
172        }
173        paranoid_pclose(fin);
174    }
175    return (noof_lines);
176}
177
178
179/**
180 * Check for existence of given @p filename.
181 * @param filename The file to check for.
182 * @return TRUE if it exists, FALSE otherwise.
183 */
184bool does_file_exist(char *filename)
185{
186
187    /*@ structures ************************************************** */
188    struct stat buf;
189
190    /*@************************************************************** */
191
192    assert(filename != NULL);
193
194    if (lstat(filename, &buf)) {
195        mr_msg(20, "%s does not exist", filename);
196        return (FALSE);
197    } else {
198        mr_msg(20, "%s exists", filename);
199        return (TRUE);
200    }
201}
202
203
204/**
205 * Modify @p inout (a file containing a list of files) to only contain files
206 * that exist.
207 * @param inout The filelist to operate on.
208 * @note The original file is renamed beforehand, so it will not be accessible
209 * while the modification is in progress.
210 */
211void exclude_nonexistent_files(char *inout)
212{
213    char *infname = NULL;
214    char *outfname = NULL;
215    char *tmp = NULL;
216    char *incoming = NULL;
217
218    /*@ int ********************************************************* */
219    int i;
220    size_t n = 0;
221
222    /*@ pointers **************************************************** */
223    FILE *fin, *fout;
224
225
226    /*@ end vars *********************************************************** */
227
228    assert_string_is_neither_NULL_nor_zerolength(inout);
229
230    mr_asprintf(&infname, "%s.in", inout);
231
232    mr_asprintf(&tmp, "cp -f %s %s", inout, infname);
233    run_program_and_log_output(tmp, FALSE);
234    mr_free(tmp);
235
236    if (!(fin = fopen(infname, "r"))) {
237        log_OS_error("Unable to openin infname");
238        mr_free(infname);
239        return;
240    }
241
242    mr_asprintf(&outfname, "%s", inout);
243    if (!(fout = fopen(outfname, "w"))) {
244        log_OS_error("Unable to openout outfname");
245        mr_free(infname);
246        mr_free(outfname);
247        return;
248    }
249    mr_free(outfname);
250
251    for (mr_getline(&incoming, &n, fin); !feof(fin);
252         mr_getline(&incoming, &n, fin)) {
253        i = strlen(incoming) - 1;
254        if (i >= 0 && incoming[i] < 32) {
255            incoming[i] = '\0';
256        }
257        if (does_file_exist(incoming)) {
258            fprintf(fout, "%s\n", incoming);
259        } else {
260            mr_asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
261            log_it(tmp);
262            mr_free(tmp);
263        }
264    }
265    mr_free(incoming);
266    paranoid_fclose(fout);
267    paranoid_fclose(fin);
268    unlink(infname);
269    mr_free(infname);
270}
271
272
273/**
274 * Attempt to find the user's kernel by calling Mindi.
275 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
276 * don't do anything.
277 * @param kernel Where to put the found kernel.
278 * @return 0 for success, 1 for failure.
279 */
280int figure_out_kernel_path_interactively_if_necessary(char *kernel)
281{
282    char *tmp = NULL;
283    char *command = NULL;
284
285    malloc_string(tmp);
286    if (!kernel[0]) {
287        strcpy(kernel,
288               call_program_and_get_last_line_of_output
289               ("mindi --findkernel 2> /dev/null"));
290    }
291    // If we didn't get anything back, check whether mindi raised a fatal error
292    if (!kernel[0]) {
293        mr_asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
294        strcpy(tmp, call_program_and_get_last_line_of_output(command));
295        if (strlen(tmp) > 1) {
296            popup_and_OK(tmp);
297            fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
298        }
299        mr_free(command);
300    }
301    log_it("Calling Mindi with kernel path of '%s'", kernel);
302    while (!kernel[0]) {
303        if (!ask_me_yes_or_no
304            ("Kernel not found or invalid. Choose another?")) {
305            return (1);
306        }
307        if (!popup_and_get_string
308            ("Kernel path",
309             "What is the full path and filename of your kernel, please?",
310             kernel, MAX_STR_LEN / 4)) {
311            fatal_error
312                ("Kernel not found. Please specify with the '-k' flag.");
313        }
314        log_it("User says kernel is at %s", kernel);
315    }
316    return (0);
317}
318
319
320/**
321 * Find location of specified executable in user's PATH.
322 * @param fname The basename of the executable to search for (e.g. @c afio).
323 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
324 * @note The returned string points to static storage that will be overwritten with each call.
325 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
326 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
327 * to nothing.
328 */
329char *find_home_of_exe(char *fname)
330{
331    /*@ buffers ********************* */
332    static char output[MAX_STR_LEN];
333    char *incoming;
334    char *command = NULL;
335
336    malloc_string(incoming);
337    incoming[0] = '\0';
338    /*@******************************* */
339
340    assert_string_is_neither_NULL_nor_zerolength(fname);
341
342    mr_asprintf(&command, "which %s 2> /dev/null", fname);
343    strcpy(incoming, call_program_and_get_last_line_of_output(command));
344    mr_free(command);
345
346    if (incoming[0] == '\0') {
347        if (system("which file > /dev/null 2> /dev/null")) {
348            mr_free(incoming);
349            mr_free(command);
350            output[0] = '\0';
351            return (NULL);      // forget it :)
352        }
353        mr_asprintf(&command,
354                "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
355                incoming);
356        strcpy(incoming,
357               call_program_and_get_last_line_of_output(command));
358        mr_free(command);
359    }
360    if (incoming[0] == '\0')    // yes, it is == '\0' twice, not once :)
361    {
362        mr_asprintf(&command, "dirname %s 2> /dev/null", incoming);
363        strcpy(incoming,
364               call_program_and_get_last_line_of_output(command));
365        mr_free(command);
366    }
367    strcpy(output, incoming);
368    if (output[0] != '\0' && does_file_exist(output)) {
369        mr_msg(4, "find_home_of_exe () --- Found %s at %s", fname,
370                incoming);
371    } else {
372        output[0] = '\0';
373        mr_msg(4, "find_home_of_exe() --- Could not find %s", fname);
374    }
375    mr_free(incoming);
376    if (!output[0]) {
377        return (NULL);
378    } else {
379        return (output);
380    }
381}
382
383
384/**
385 * Get the last sequence of digits surrounded by non-digits in the first 32k of
386 * a file.
387 * @param logfile The file to look in.
388 * @return The number found, or 0 if none.
389 */
390int get_trackno_from_logfile(char *logfile)
391{
392
393    /*@ pointers ********************************************************* */
394    FILE *fin;
395
396    /*@ int ************************************************************** */
397    int trackno = 0;
398    size_t len = 0;
399
400    /*@ buffer ************************************************************ */
401    char datablock[32701];
402
403    assert_string_is_neither_NULL_nor_zerolength(logfile);
404
405    if (!(fin = fopen(logfile, "r"))) {
406        log_OS_error("Unable to open logfile");
407        fatal_error("Unable to open logfile to read trackno");
408    }
409    len = fread(datablock, 1, 32700, fin);
410    paranoid_fclose(fin);
411    if (len <= 0) {
412        return (0);
413    }
414    for (; len > 0 && !isdigit(datablock[len - 1]); len--);
415    datablock[len--] = '\0';
416    for (; len > 0 && isdigit(datablock[len - 1]); len--);
417    trackno = atoi(datablock + len);
418    return (trackno);
419}
420
421
422/**
423 * Get a percentage from the last line of @p filename. We look for the string
424 * "% done" on the last line and, if we find it, grab the number before the last % sign.
425 * @param filename The file to get the percentage from.
426 * @return The percentage found, or 0 for error.
427 */
428int grab_percentage_from_last_line_of_file(char *filename)
429{
430
431    char *lastline = NULL;
432    char *command = NULL;
433    char *p = NULL;
434    int i;
435
436    malloc_string(lastline);
437    for (i = NOOF_ERR_LINES - 1;
438         i >= 0 && !strstr(err_log_lines[i], "% Done")
439         && !strstr(err_log_lines[i], "% done"); i--);
440    if (i < 0) {
441        mr_asprintf(&command,
442                "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
443                filename, '%');
444        strcpy(lastline,
445               call_program_and_get_last_line_of_output(command));
446        mr_free(command);
447        if (!lastline[0]) {
448            return (0);
449        }
450    } else {
451        strcpy(lastline, err_log_lines[i]);
452    }
453
454    p = strrchr(lastline, '%');
455    if (p) {
456        *p = '\0';
457    }
458    if (!p) {
459        return (0);
460    }
461    *p = '\0';
462    for (p--; *p != ' ' && p != lastline; p--);
463    if (p != lastline) {
464        p++;
465    }
466    i = atoi(p);
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    char *command = NULL;
483    char *tmp = NULL;
484
485    /*@ pointers **************************************************** */
486    FILE *fin;
487    size_t n = 0;
488
489    /*@ end vars **************************************************** */
490
491    if (!does_file_exist(filename)) {
492        mr_asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
493                filename);
494        log_it(tmp);
495        mr_free(tmp);
496        output[0] = '\0';
497        return (output);
498    }
499    mr_asprintf(&command, "tail -n1 %s", filename);
500    fin = popen(command, "r");
501    mr_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 */
517off_t length_of_file(char *filename)
518{
519    /*@ pointers *************************************************** */
520    FILE *fin;
521
522    /*@ long long ************************************************* */
523    off_t 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 = ftello(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    mr_asprintf(&tmp, "mkdir -p %s", outdir_fname);
551    res = system(tmp);
552    mr_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    mr_asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
579    res += system(command);
580    mr_free(command);
581
582    mr_asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
583    res += system(command);
584    mr_free(command);
585
586    mr_asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
587    res += system(command);
588    mr_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    mr_getline(&incoming, &n, fin);
622    while (!feof(fin)) {
623        if (strstr(incoming, wildcard)) {
624            matches++;
625        }
626        mr_getline(&incoming, &n, fin);
627    }
628    paranoid_fclose(fin);
629    mr_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 = NULL;
644    char *lockfile_fname = NULL;
645    int res;
646    size_t n = 0;
647    FILE *fin;
648
649    mr_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        mr_free(lockfile_fname);
656        return;
657    }
658    if (does_file_exist(lockfile_fname)) {
659        if ((fin = fopen(lockfile_fname, "r"))) {
660            mr_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        mr_free(tmp);
667
668        mr_asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
669        res = system(tmp);
670        mr_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    mr_asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
678            lockfile_fname);
679    mr_free(lockfile_fname);
680
681    if (system(tmp)) {
682        fatal_error("Cannot register PID");
683    }
684    mr_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 = NULL;
698    char *sz_res = NULL;
699    long file_len_K = 0L;
700
701    malloc_string(sz_res);
702    mr_asprintf(&command,
703            "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
704            dev, tmpdir);
705    log_it(command);
706    strcpy(sz_res, call_program_and_get_last_line_of_output(command));
707    file_len_K = atol(sz_res);
708    mr_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
709    mr_free(command);
710    mr_free(sz_res);
711    return (file_len_K);
712}
713
714
715/**
716 * Calculate the total size (in KB) of all the biggiefiles in this backup.
717 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
718 * @return The total size of all biggiefiles in KB.
719 */
720long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
721{
722    char *fname = NULL;
723    char *biggielist = NULL;
724    char *comment = NULL;
725    char *tmp = NULL;
726    char *command = NULL;
727
728    /*@ long ******************************************************** */
729    long scratchL = 0L;
730    long file_len_K = 0L;
731
732    /*@ pointers *************************************************** */
733    FILE *fin = NULL;
734    size_t n = 0;
735
736    /*@ end vars *************************************************** */
737
738    malloc_string(tmp);
739    log_it("Calculating size of all biggiefiles (in total)");
740    mr_asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
741    log_it("biggielist = %s", biggielist);
742    if (!(fin = fopen(biggielist, "r"))) {
743        log_OS_error
744            ("Cannot open biggielist. OK, so estimate is based on filesets only.");
745    } else {
746        mr_msg(4, "Reading it...");
747        for (mr_getline(&fname, &n, fin); !feof(fin);
748             mr_getline(&fname, &n, fin)) {
749            if (fname[strlen(fname) - 1] <= 32) {
750                fname[strlen(fname) - 1] = '\0';
751            }
752            if (0 == strncmp(fname, "/dev/", 5)) {
753                if (is_dev_an_NTFS_dev(fname)) {
754                    if ( !find_home_of_exe("ntfsresize")) {
755                        fatal_error("ntfsresize not found");
756                    }
757                    mr_asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
758                    log_it("command = %s", command);
759                    strcpy (tmp, call_program_and_get_last_line_of_output(command));
760                    mr_free(command);
761
762                    log_it("res of it = %s", tmp);
763                    file_len_K = atoll(tmp) / 1024L;
764                } else {
765                    file_len_K = get_phys_size_of_drive(fname) * 1024L;
766                }
767            } else {
768                /* BERLIOS: more than long here ??? */
769                file_len_K = (long) (length_of_file(fname) / 1024);
770            }
771            if (file_len_K > 0) {
772                scratchL += file_len_K;
773                mr_msg(4, "%s --> %ld K", fname, file_len_K);
774            }
775            mr_asprintf(&comment,
776                    "After adding %s, scratchL+%ld now equals %ld", fname,
777                    file_len_K, scratchL);
778            mr_msg(4, comment);
779            mr_free(comment);
780
781            if (feof(fin)) {
782                break;
783            }
784        }
785        mr_free(fname);
786    }
787    mr_free(biggielist);
788
789    log_it("Closing...");
790    paranoid_fclose(fin);
791    log_it("Finished calculating total size of all biggiefiles");
792    mr_free(tmp);
793    return (scratchL);
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 = NULL;
807    long long llres;
808    size_t n = 0;
809    /*@ pointers **************************************************** */
810    char *p = NULL;
811    FILE *fin = NULL;
812
813    /*@ end vars *************************************************** */
814
815    mr_asprintf(&command, "du -sk %s", mountpt);
816    errno = 0;
817    fin = popen(command, "r");
818    if (errno) {
819      log_it("popen() FAILED: command=%s, mountpt=%s, fin=%d, errno=%d, strerror=%s", command, mountpt, fin, errno, strerror(errno));
820      llres = 0;
821    } else {
822        mr_getline(&tmp, &n, fin);
823        paranoid_pclose(fin);
824        p = strchr(tmp, '\t');
825        if (p) {
826            *p = '\0';
827        }
828        for (p = tmp, llres = 0; *p != '\0'; p++) {
829            llres *= 10;
830            llres += (int) (*p - '0');
831        }
832    }
833
834    mr_free(command);
835    mr_free(tmp);
836    return (llres);
837}
838
839
840/**
841 * Update a CRC checksum to include another character.
842 * @param crc The original CRC checksum.
843 * @param c The character to add.
844 * @return The new CRC checksum.
845 * @ingroup utilityGroup
846 */
847unsigned int updcrc(unsigned int crc, unsigned int c)
848{
849    unsigned int tmp;
850    tmp = (crc >> 8) ^ c;
851    crc = (crc << 8) ^ crctttab[tmp & 255];
852    return crc;
853}
854
855
856/**
857 * Update a reverse CRC checksum to include another character.
858 * @param crc The original CRC checksum.
859 * @param c The character to add.
860 * @return The new CRC checksum.
861 * @ingroup utilityGroup
862 */
863unsigned int updcrcr(unsigned int crc, unsigned int c)
864{
865    unsigned int tmp;
866    tmp = crc ^ c;
867    crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
868    return crc;
869}
870
871
872/**
873 * Check for an executable on the user's system; write a message to the
874 * screen and the log if we can't find it.
875 * @param fname The executable basename to look for.
876 * @return 0 if it's found, nonzero if not.
877 */
878int whine_if_not_found(char *fname)
879{
880    /*@ buffers *** */
881    char *command;
882    char *errorstr;
883    int res = 0;
884
885
886    mr_asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
887    res = system(command);
888    mr_free(command);
889
890    if (res) {
891        mr_asprintf(&errorstr,
892            _("Please install '%s'. I cannot find it on your system."),
893            fname);
894        log_to_screen(errorstr);
895        mr_free(errorstr);
896        log_to_screen
897            (_("There may be an hyperlink at http://www.mondorescue.org which"));
898        log_to_screen(_("will take you to the relevant (missing) package."));
899        return (1);
900    } else {
901        return (0);
902    }
903}
904
905
906/**
907 * Create a data file at @p fname containing @p contents.
908 * The data actually can be multiple lines, despite the name.
909 * @param fname The file to create.
910 * @param contents The data to put in it.
911 * @return 0 for success, 1 for failure.
912 */
913int write_one_liner_data_file(char *fname, char *contents)
914{
915    /*@ pointers *************************************************** */
916    FILE *fout;
917    int res = 0;
918
919    /*@ end vars *************************************************** */
920
921    assert_string_is_neither_NULL_nor_zerolength(fname);
922    if (!contents) {
923        log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
924    }
925    if (!(fout = fopen(fname, "w"))) {
926        log_it("fname=%s");
927        log_OS_error("Unable to openout fname");
928        return (1);
929    }
930    fprintf(fout, "%s\n", contents);
931    paranoid_fclose(fout);
932    return (res);
933}
934
935
936/**
937 * Read @p fname into @p contents.
938 * @param fname The file to read.
939 * @param contents Where to put its contents.
940 * @return 0 for success, nonzero for failure.
941 */
942int read_one_liner_data_file(char *fname, char *contents)
943{
944    /*@ pointers *************************************************** */
945    FILE *fin;
946    int res = 0;
947    int i;
948
949    /*@ end vars *************************************************** */
950
951    assert_string_is_neither_NULL_nor_zerolength(fname);
952    if (!contents) {
953        log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
954    }
955    if (!(fin = fopen(fname, "r"))) {
956        log_it("fname=%s", fname);
957        log_OS_error("Unable to openin fname");
958        return (1);
959    }
960    fscanf(fin, "%s\n", contents);
961    i = strlen(contents);
962    if (i > 0 && contents[i - 1] < 32) {
963        contents[i - 1] = '\0';
964    }
965    paranoid_fclose(fin);
966    return (res);
967}
968
969
970/**
971 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
972 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
973 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
974 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
975 * @param bkpinfo The backup information structure. Fields used:
976 * - @c bkpinfo->postnuke_tarball
977 * - @c bkpinfo->scratchdir
978 * - @c bkpinfo->tmpdir
979 */
980void copy_mondo_and_mindi_stuff_to_scratchdir(struct s_bkpinfo *bkpinfo)
981{
982    /*@ Char buffers ** */
983    char *command = NULL;
984    char tmp[MAX_STR_LEN];
985    char old_pwd[MAX_STR_LEN];
986
987    mvaddstr_and_log_it(g_currentY, 0,
988                        "Copying Mondo's core files to the scratch directory");
989
990    /* BERLIOS: Why do we need to do it here as well ? */
991    mr_msg(4, "g_mondo_home='%s'", g_mondo_home);
992    if (strlen(g_mondo_home) < 2) {
993        find_and_store_mondoarchives_home(g_mondo_home);
994    }
995    mr_asprintf(&command, CP_BIN " --parents -pRdf %s %s", g_mondo_home,
996            bkpinfo->scratchdir);
997
998    mr_msg(4, "command = %s", command);
999    if (run_program_and_log_output(command, 1)) {
1000        fatal_error("Failed to copy Mondo's stuff to scratchdir");
1001    }
1002    mr_free(command);
1003
1004    /* i18n */
1005    mr_asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
1006    mr_msg(4, "command = %s", command);
1007    run_program_and_log_output(command, 1);
1008    mr_free(command);
1009
1010    sprintf(tmp, "%s/payload.tgz", g_mondo_home);
1011    if (does_file_exist(tmp)) {
1012        log_it("Untarring payload %s to scratchdir %s", tmp,
1013               bkpinfo->scratchdir);
1014        (void) getcwd(old_pwd, MAX_STR_LEN - 1);
1015        chdir(bkpinfo->scratchdir);
1016        mr_asprintf(&command, "tar -zxvf %s", tmp);
1017        if (run_program_and_log_output(command, FALSE)) {
1018            fatal_error("Failed to untar payload");
1019        }
1020        mr_free(command);
1021        chdir(old_pwd);
1022    }
1023
1024    mr_asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
1025            bkpinfo->scratchdir);
1026
1027    if (run_program_and_log_output(command, FALSE)) {
1028        fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
1029    }
1030    mr_free(command);
1031
1032    strcpy(tmp,call_program_and_get_last_line_of_output("which mondorestore"));
1033    if (!tmp) {
1034        fatal_error
1035            ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
1036    }
1037    mr_asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
1038    if (run_program_and_log_output(command, FALSE)) {
1039        fatal_error("Failed to copy mondorestore to tmpdir");
1040    }
1041    mr_free(command);
1042
1043    mr_asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1044    paranoid_system(command);
1045    mr_free(command);
1046
1047    if (bkpinfo->postnuke_tarball[0]) {
1048        mr_asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1049                bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1050        if (run_program_and_log_output(command, FALSE)) {
1051            fatal_error("Unable to copy post-nuke tarball to tmpdir");
1052        }
1053        mr_free(command);
1054    }
1055
1056    mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1057}
1058
1059
1060/**
1061 * Store the client's NFS configuration in files to be restored at restore-time.
1062 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1063 * @param bkpinfo The backup information structure. Fields used:
1064 * - @c nfs_mount
1065 * - @c nfs_remote_dir
1066 * - @c tmpdir
1067 */
1068void store_nfs_config(struct s_bkpinfo *bkpinfo)
1069{
1070
1071    /*@ buffers ******** */
1072    char nfs_dev[MAX_STR_LEN];
1073    char mac_addr[MAX_STR_LEN];
1074    char nfs_mount[MAX_STR_LEN];
1075    char nfs_client_ipaddr[MAX_STR_LEN];
1076    char nfs_client_netmask[MAX_STR_LEN];
1077    char nfs_client_broadcast[MAX_STR_LEN];
1078    char nfs_client_defgw[MAX_STR_LEN];
1079    char nfs_server_ipaddr[MAX_STR_LEN];
1080    char *tmp = NULL;
1081    char *command = NULL;
1082
1083    FILE *fd1 = NULL;
1084
1085    /*@ pointers ***** */
1086    char *p;
1087
1088    log_it("Storing NFS configuration");
1089    mr_asprintf(&tmp, bkpinfo->nfs_mount);
1090    p = strchr(tmp, ':');
1091    if (!p) {
1092        fatal_error
1093            ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1094    }
1095    *(p++) = '\0';
1096    strcpy(nfs_server_ipaddr, tmp);
1097    mr_free(tmp);
1098
1099    strcpy(nfs_mount, p);
1100    /* BERLIOS : there is a bug #67 here as it only considers the first NIC */
1101    mr_asprintf(&command,
1102            "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1103    strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1104    mr_free(command);
1105
1106    mr_asprintf(&command,
1107            "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1108    strcpy(nfs_client_ipaddr,
1109           call_program_and_get_last_line_of_output(command));
1110    mr_free(command);
1111
1112    mr_asprintf(&command,
1113            "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1114    strcpy(nfs_client_netmask,
1115           call_program_and_get_last_line_of_output(command));
1116    mr_free(command);
1117
1118    mr_asprintf(&command,
1119            "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1120    strcpy(nfs_client_broadcast,
1121           call_program_and_get_last_line_of_output(command));
1122    mr_free(command);
1123
1124    mr_asprintf(&command,
1125            "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1126    strcpy(nfs_client_defgw,
1127           call_program_and_get_last_line_of_output(command));
1128    mr_free(command);
1129
1130    mr_asprintf(&tmp,
1131            "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s;  ",
1132            nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1133    log_it(tmp);
1134    mr_free(tmp);
1135
1136    if (strlen(nfs_dev) < 2) {
1137        fatal_error
1138            ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1139    }
1140    /********
1141    * If the NFS device that found above is a bonded device,
1142    * we need to replace it with an ethN device or the
1143    * networking will not start during an NFS restore.
1144    *
1145    * If the NFS device in nfs_dev begins with the word "bond",
1146    * look for the corresponding slave ethN device and copy it to nfs_dev.
1147    * Using the common MAC address
1148    ********/
1149    if (!strncmp(nfs_dev, "bond", 4)) {
1150        log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1151        mr_asprintf(&command,
1152                "ifconfig %s | awk '{print $5}' | head -n1", nfs_dev);
1153        strcpy(mac_addr, call_program_and_get_last_line_of_output(command));
1154        mr_free(command);
1155
1156        mr_asprintf(&command,
1157                "ifconfig | grep -E '%s' | grep -v '%s' | head -n1 | cut -d' ' -f1", mac_addr,nfs_dev);
1158        strcpy(nfs_dev, call_program_and_get_last_line_of_output(command));
1159        mr_free(command);
1160
1161        log_to_screen("Replacing it with %s\n", nfs_dev);
1162    }
1163
1164    fd1 = mr_fopen(MONDORESTORECFG, "a");
1165    mr_fprintf(fd1, "nfs-dev %s\n", nfs_dev);
1166    mr_fprintf(fd1, "nfs-client-ipaddr %s\n", nfs_client_ipaddr);
1167    mr_fprintf(fd1, "nfs-client-netmask %s\n", nfs_client_netmask);
1168    mr_fprintf(fd1, "nfs-client-broadcast %s\n", nfs_client_broadcast);
1169    mr_fprintf(fd1, "nfs-client-defgw %s\n", nfs_client_defgw);
1170    mr_fprintf(fd1, "nfs-server-ipaddr %s\n", nfs_server_ipaddr);
1171    mr_fprintf(fd1, "nfs-server-mount %s\n", bkpinfo->nfs_mount);
1172    mr_fprintf(fd1, "nfs-server-path %s\n", bkpinfo->nfs_remote_dir);
1173    mr_fprintf(fd1, "iso-prefix %s\n", bkpinfo->prefix);
1174    mr_fclose(fd1);
1175
1176    log_it("Finished storing NFS configuration");
1177}
1178
1179
1180/**
1181 * Determine the approximate number of media that the backup will take up,
1182 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1183 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1184 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1185 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1186 * If there are more than 50 media estimated, the estimate will not be shown.
1187 * @param bkpinfo The backup information structure. Fields used:
1188 * - @c bkpinfo->backup_media_type
1189 * - @c bkpinfo->image_devs
1190 * - @c bkpinfo->media_size
1191 * - @c bkpinfo->optimal_set_size
1192 * - @c bkpinfo->use_lzo
1193 * @param noof_sets The number of filesets created.
1194 * @ingroup archiveGroup
1195 */
1196void
1197estimate_noof_media_required(struct s_bkpinfo *bkpinfo, long noof_sets)
1198{
1199    /*@ buffers *************** */
1200    char *tmp = NULL;
1201
1202    /*@ long long ************* */
1203    long long scratchLL;
1204
1205    if (bkpinfo->media_size[1] <= 0 || bkpinfo->backup_media_type == nfs) {
1206        log_to_screen("Number of media required: UNKNOWN");
1207        return;
1208    }
1209
1210    log_it("Estimating number of media required...");
1211    scratchLL =
1212        (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1213        + (long long) (size_of_all_biggiefiles_K(bkpinfo));
1214    scratchLL = (scratchLL / 1024) / bkpinfo->media_size[1];
1215    scratchLL++;
1216    if (bkpinfo->use_lzo) {
1217        scratchLL = (scratchLL * 2) / 3;
1218    } else if (bkpinfo->use_gzip) {
1219        scratchLL = (scratchLL * 2) / 3;
1220    } else {
1221        scratchLL = scratchLL / 2;
1222    }
1223    if (!scratchLL) {
1224        scratchLL++;
1225    }
1226    if (scratchLL <= 1) {
1227        mr_asprintf(&tmp,
1228                _("Your backup will probably occupy a single %s. Maybe two."),
1229                bkpinfo->backup_media_string);
1230    } else {
1231        mr_asprintf(&tmp, _("Your backup will occupy approximately %s media."),
1232                number_to_text((int) (scratchLL + 1)));
1233    }
1234    if (!bkpinfo->image_devs[0] && (scratchLL < 50)) {
1235        log_to_screen(tmp);
1236    }
1237    mr_free(tmp);
1238    return;
1239}
1240
1241
1242/**
1243 * Determine whether a file is compressed. This is done
1244 * by reading through the "do-not-compress-these" file distributed with Mondo.
1245 * @param filename The file to check.
1246 * @return TRUE if it's compressed, FALSE if not.
1247 */
1248bool is_this_file_compressed(char *filename)
1249{
1250    char *do_not_compress_these = NULL;
1251    char *tmp = NULL;
1252    char *p = NULL;
1253
1254    malloc_string(do_not_compress_these);
1255    mr_asprintf(&tmp, "%s/do-not-compress-these", g_mondo_home);
1256    if (!does_file_exist(tmp)) {
1257        mr_free(tmp);
1258        return (FALSE);
1259    }
1260    mr_free(tmp);
1261
1262    strcpy(do_not_compress_these,last_line_of_file(tmp));
1263    for (p = do_not_compress_these; p != NULL; p++) {
1264        mr_asprintf(&tmp, p);
1265        if (strchr(tmp, ' ')) {
1266            *(strchr(tmp, ' ')) = '\0';
1267        }
1268        if (!strcmp(strrchr(filename,'.'), tmp)) {
1269            mr_free(do_not_compress_these);
1270            mr_free(tmp);
1271            return (TRUE);
1272        }
1273        mr_free(tmp);
1274
1275        if (!(p = strchr(p, ' '))) {
1276            break;
1277        }
1278    }
1279    mr_free(do_not_compress_these);
1280    return (FALSE);
1281}
1282
1283
1284int mode_of_file(char *fname)
1285{
1286    struct stat buf;
1287
1288    if (lstat(fname, &buf)) {
1289        return (-1);
1290    }                           // error
1291    else {
1292        return (buf.st_mode);
1293    }
1294}
1295
1296
1297/**
1298 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1299 * @param outfile Where to put the script.
1300 * @return 0 for success, 1 for failure.
1301 */
1302int make_grub_install_scriptlet(char *outfile)
1303{
1304    FILE *fout = NULL;
1305    char *tmp = NULL;
1306    int retval = 0;
1307
1308    if ((fout = fopen(outfile, "w"))) {
1309        fprintf(fout,
1310                "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1311        paranoid_fclose(fout);
1312        mr_msg(2, "Created %s", outfile);
1313        mr_asprintf(&tmp, "chmod +x %s", outfile);
1314        paranoid_system(tmp);
1315        mr_free(tmp);
1316
1317        retval = 0;
1318    } else {
1319        retval = 1;
1320    }
1321    return (retval);
1322}
1323
1324/* @} - end fileGroup */
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