📄 list.c
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if (wantug) {
#ifdef NONAMES
st->st_uid = from_oct(8, header->header.uid);
st->st_gid = from_oct(8, header->header.gid);
#else
st->st_uid = finduid(header->header.uname);
st->st_gid = findgid(header->header.gname);
#endif
}
switch (header->header.linkflag) {
case LF_BLK: case LF_CHR:
st->st_rdev = makedev(from_oct(8, header->header.devmajor),
from_oct(8, header->header.devminor));
}
} else {
/* Old fashioned tar archive */
*stdp = 0;
st->st_uid = from_oct(8, header->header.uid);
st->st_gid = from_oct(8, header->header.gid);
st->st_rdev = 0;
}
}
/*
* Quick and dirty octal conversion.
*
* Result is -1 if the field is invalid (all blank, or nonoctal).
*/
long
from_oct(digs, where)
register int digs;
register char *where;
{
register long value;
while (isspace(*where)) { /* Skip spaces */
where++;
if (--digs <= 0)
return -1; /* All blank field */
}
value = 0;
while (digs > 0 && isodigit(*where)) { /* Scan til nonoctal */
value = (value << 3) | (*where++ - '0');
--digs;
}
if (digs > 0 && *where && !isspace(*where))
return -1; /* Ended on non-space/nul */
return value;
}
/*
* Actually print it.
*
* Plain and fancy file header block logging.
* Non-verbose just prints the name, e.g. for "tar t" or "tar x".
* This should just contain file names, so it can be fed back into tar
* with xargs or the "-T" option. The verbose option can give a bunch
* of info, one line per file. I doubt anybody tries to parse its
* format, or if they do, they shouldn't. Unix tar is pretty random here
* anyway.
*
* Note that print_header uses the globals <head>, <hstat>, and
* <head_standard>, which must be set up in advance. This is not very clean
* and should be cleaned up. FIXME.
*/
#define UGSWIDTH 11 /* min width of User, group, size */
#define DATEWIDTH 19 /* Last mod date */
static int ugswidth = UGSWIDTH; /* Max width encountered so far */
void
print_header()
{
char modes[11];
char *timestamp;
char uform[11], gform[11]; /* These hold formatted ints */
char *user, *group;
char size[24]; /* Holds a formatted long or maj, min */
long longie; /* To make ctime() call portable */
int pad;
char *name;
extern long baserec;
if(f_sayblock)
fprintf(msg_file,"rec %10d: ",baserec + (ar_record - ar_block));
/* annofile(msg_file, (char *)NULL); */
if (f_verbose <= 1) {
/* Just the fax, mam. */
char *name;
name=quote_copy_string(head->header.name);
if(name==0)
name=head->header.name;
fprintf(msg_file, "%s\n", name);
if(name!=head->header.name)
free(name);
} else {
/* File type and modes */
modes[0] = '?';
switch (head->header.linkflag) {
case LF_VOLHDR:
modes[0]='V';
break;
case LF_MULTIVOL:
modes[0]='M';
break;
case LF_NAMES:
modes[0]='N';
break;
case LF_SPARSE:
case LF_NORMAL:
case LF_OLDNORMAL:
case LF_LINK:
modes[0] = '-';
if ('/' == head->header.name[strlen(head->header.name)-1])
modes[0] = 'd';
break;
case LF_DUMPDIR:modes[0] = 'd'; break;
case LF_DIR: modes[0] = 'd'; break;
case LF_SYMLINK:modes[0] = 'l'; break;
case LF_BLK: modes[0] = 'b'; break;
case LF_CHR: modes[0] = 'c'; break;
case LF_FIFO: modes[0] = 'p'; break;
case LF_CONTIG: modes[0] = 'C'; break;
}
demode((unsigned)hstat.st_mode, modes+1);
/* Timestamp */
longie = hstat.st_mtime;
timestamp = ctime(&longie);
timestamp[16] = '\0';
timestamp[24] = '\0';
/* User and group names */
if (*head->header.uname && head_standard) {
user = head->header.uname;
} else {
user = uform;
(void)sprintf(uform, "%d", (int)hstat.st_uid);
}
if (*head->header.gname && head_standard) {
group = head->header.gname;
} else {
group = gform;
(void)sprintf(gform, "%d", (int)hstat.st_gid);
}
/* Format the file size or major/minor device numbers */
switch (head->header.linkflag) {
case LF_CHR:
case LF_BLK:
(void)sprintf(size, "%d,%d",
major(hstat.st_rdev),
minor(hstat.st_rdev));
break;
case LF_SPARSE:
(void)sprintf(size, "%ld",
from_oct(1+12, head->header.realsize));
break;
default:
(void)sprintf(size, "%ld", (long)hstat.st_size);
}
/* Figure out padding and print the whole line. */
pad = strlen(user) + strlen(group) + strlen(size) + 1;
if (pad > ugswidth) ugswidth = pad;
name = quote_copy_string(head->header.name);
if(!name)
name=head->header.name;
fprintf(msg_file, "%s %s/%s %*s%s %s %s %.*s",
modes,
user,
group,
ugswidth - pad,
"",
size,
timestamp+4, timestamp+20,
sizeof(head->header.name),
name);
if(name!=head->header.name)
free(name);
switch (head->header.linkflag) {
case LF_SYMLINK:
name=quote_copy_string(head->header.linkname);
if(!name)
name=head->header.linkname;
fprintf(msg_file, " -> %s\n", name);
if(name!=head->header.linkname)
free(name);
break;
case LF_LINK:
name=quote_copy_string(head->header.linkname);
if(!name)
name=head->header.linkname;
fprintf(msg_file, " link to %s\n", head->header.linkname);
if(name!=head->header.linkname)
free(name);
break;
default:
fprintf(msg_file, " unknown file type '%c'\n",
head->header.linkflag);
break;
case LF_OLDNORMAL:
case LF_NORMAL:
case LF_SPARSE:
case LF_CHR:
case LF_BLK:
case LF_DIR:
case LF_FIFO:
case LF_CONTIG:
case LF_DUMPDIR:
putc('\n', msg_file);
break;
case LF_VOLHDR:
fprintf(msg_file, "--Volume Header--\n");
break;
case LF_MULTIVOL:
fprintf(msg_file, "--Continued at byte %ld--\n",from_oct(1+12,head->header.offset));
break;
case LF_NAMES:
fprintf(msg_file,"--Mangled file names--\n");
break;
}
}
fflush(msg_file);
}
/*
* Print a similar line when we make a directory automatically.
*/
void
pr_mkdir(pathname, length, mode)
char *pathname;
int length;
int mode;
{
char modes[11];
char *name;
extern long baserec;
if (f_verbose > 1) {
/* File type and modes */
modes[0] = 'd';
demode((unsigned)mode, modes+1);
if(f_sayblock)
fprintf(msg_file,"rec %10d: ",baserec + (ar_record - ar_block));
/* annofile(msg_file, (char *)NULL); */
name=quote_copy_string(pathname);
if(!name)
name=pathname;
fprintf(msg_file, "%s %*s %.*s\n",
modes,
ugswidth+DATEWIDTH,
"Creating directory:",
length,
pathname);
if(name!=pathname)
free(name);
}
}
/*
* Skip over <size> bytes of data in records in the archive.
*/
void
skip_file(size)
register long size;
{
union record *x;
extern long save_totsize;
extern long save_sizeleft;
if(f_multivol) {
save_totsize=size;
save_sizeleft=size;
}
while (size > 0) {
x = findrec();
if (x == NULL) { /* Check it... */
msg("Unexpected EOF on archive file");
exit(EX_BADARCH);
}
userec(x);
size -= RECORDSIZE;
if(f_multivol)
save_sizeleft-=RECORDSIZE;
}
}
void
skip_extended_headers()
{
register union record *exhdr;
for (;;) {
exhdr = findrec();
if (!exhdr->ext_hdr.isextended) {
userec(exhdr);
break;
}
userec (exhdr);
}
}
/*
* Decode the mode string from a stat entry into a 9-char string and a null.
*/
void
demode(mode, string)
register unsigned mode;
register char *string;
{
register unsigned mask;
register char *rwx = "rwxrwxrwx";
for (mask = 0400; mask != 0; mask >>= 1) {
if (mode & mask)
*string++ = *rwx++;
else {
*string++ = '-';
rwx++;
}
}
if (mode & S_ISUID)
if (string[-7] == 'x')
string[-7] = 's';
else
string[-7] = 'S';
if (mode & S_ISGID)
if (string[-4] == 'x')
string[-4] = 's';
else
string[-4] = 'S';
if (mode & S_ISVTX)
if (string[-1] == 'x')
string[-1] = 't';
else
string[-1] = 'T';
*string = '\0';
}
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