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authorbug1 <bug1@69ca8d6d-28ef-0310-b511-8ec308f3f277>2001-06-13 07:34:03 +0000
committerbug1 <bug1@69ca8d6d-28ef-0310-b511-8ec308f3f277>2001-06-13 07:34:03 +0000
commit0206172be8940d86e81f52636d2dd9dbcd32388b (patch)
tree3bf667fdf5b78df26acfc662955d7e38f3c5c4d5 /libbb
parent534e65a38bad53ef1681872f872260330be9a636 (diff)
downloadbusybox-w32-0206172be8940d86e81f52636d2dd9dbcd32388b.tar.gz
busybox-w32-0206172be8940d86e81f52636d2dd9dbcd32388b.tar.bz2
busybox-w32-0206172be8940d86e81f52636d2dd9dbcd32388b.zip
Reorganise unarchive functions, new files, removed some
git-svn-id: svn://busybox.net/trunk/busybox@2825 69ca8d6d-28ef-0310-b511-8ec308f3f277
Diffstat (limited to 'libbb')
-rw-r--r--libbb/add_from_archive_list.c31
-rw-r--r--libbb/append_archive_list.c39
-rw-r--r--libbb/extract_archive.c132
-rw-r--r--libbb/fgets_str.c64
-rw-r--r--libbb/get_tar_gz_headers.c39
-rw-r--r--libbb/get_tar_headers.c111
-rw-r--r--libbb/read_text_file_to_buffer.c38
-rw-r--r--libbb/untar.c225
8 files changed, 416 insertions, 263 deletions
diff --git a/libbb/add_from_archive_list.c b/libbb/add_from_archive_list.c
new file mode 100644
index 000000000..7e4e07159
--- /dev/null
+++ b/libbb/add_from_archive_list.c
@@ -0,0 +1,31 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
17#include "libbb.h"
18
19file_headers_t *add_from_archive_list(file_headers_t *master_list, file_headers_t *new_list, const char *filename)
20{
21 file_headers_t *list_ptr;
22
23 list_ptr = master_list;
24 while (list_ptr != NULL) {
25 if (strcmp(filename, list_ptr->name) == 0) {
26 return(append_archive_list(new_list, list_ptr));
27 }
28 list_ptr = list_ptr->next;
29 }
30 return(NULL);
31} \ No newline at end of file
diff --git a/libbb/append_archive_list.c b/libbb/append_archive_list.c
new file mode 100644
index 000000000..c955d08d2
--- /dev/null
+++ b/libbb/append_archive_list.c
@@ -0,0 +1,39 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
17#include <stdlib.h>
18#include "libbb.h"
19
20file_headers_t *append_archive_list(file_headers_t *head, file_headers_t *tail_entry)
21{
22 file_headers_t *tail_ptr;
23 file_headers_t *new_node = (file_headers_t *) malloc(sizeof(file_headers_t));
24
25 *new_node = *tail_entry;
26 new_node->next = NULL;
27
28 if (head->name == NULL) {
29 head = new_node;
30 } else {
31 tail_ptr = head;
32 while(tail_ptr->next != NULL) {
33 tail_ptr = tail_ptr->next;
34 }
35 tail_ptr->next = new_node;
36 }
37
38 return(head);
39} \ No newline at end of file
diff --git a/libbb/extract_archive.c b/libbb/extract_archive.c
new file mode 100644
index 000000000..f22cbb619
--- /dev/null
+++ b/libbb/extract_archive.c
@@ -0,0 +1,132 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
17#include <stdlib.h>
18#include <string.h>
19#include <time.h>
20#include <unistd.h>
21#include <utime.h>
22#include "libbb.h"
23
24/* Extract files in the linear linked list 'extract_headers' to either
25 * filesystem, stdout or buffer depending on the value of 'function' which is
26 * described in extract_files.h
27 *
28 * prefix doesnt have to be just a directory, it may prefix the filename as well.
29 *
30 * e.g. '/var/lib/dpkg/info/dpkg.' will extract all files to the base bath
31 * '/var/lib/dpkg/info/' and all files/dirs created in that dir will have
32 * 'dpkg.' as their prefix
33 *
34 * For this reason if prefix does point to a dir then it must end with a
35 * trailing '/' or else the last dir will be assumed to be the file prefix
36 */
37
38char *extract_archive(FILE *src_stream, FILE *out_stream, file_headers_t *extract_headers, int function, const char *prefix)
39{
40 FILE *dst_stream = NULL;
41 char *full_name = NULL;
42 char *buffer = NULL;
43 size_t uncompressed_count = 0;
44 struct utimbuf t;
45
46 /* find files to extract or display */
47 while (extract_headers != NULL) {
48 /* prefix doesnt have to be a proper path it may prepend
49 * the filename as well */
50 if (prefix != NULL) {
51 /* strip leading '/' in filename to extract as prefix may not be dir */
52 char *tmp_str = strchr(extract_headers->name, '/');
53 if (tmp_str == NULL) {
54 tmp_str = extract_headers->name;
55 } else {
56 tmp_str++;
57 }
58 /* Cant use concat_path_file here as prefix might not be a directory */
59 full_name = xmalloc(strlen(prefix) + strlen(tmp_str) + 1);
60 strcpy(full_name, prefix);
61 strcat(full_name, tmp_str);
62 } else {
63 full_name = extract_headers->name;
64 }
65
66 /* Seek to start of file, have to use fgetc as src_stream may be a pipe
67 * you cant [lf]seek on pipes */
68 while (uncompressed_count < extract_headers->offset) {
69 fgetc(src_stream);
70 uncompressed_count++;
71 }
72
73 if (S_ISREG(extract_headers->mode)) {
74 if (function & extract_to_stdout) {
75 copy_file_chunk(src_stream, out_stream, extract_headers->size);
76 uncompressed_count += extract_headers->size;
77 }
78 else if (function & extract_all_to_fs) {
79 dst_stream = wfopen(full_name, "w");
80 copy_file_chunk(src_stream, dst_stream, extract_headers->size);
81 uncompressed_count += extract_headers->size;
82 fclose(dst_stream);
83 }
84 else if (function & extract_one_to_buffer) {
85 buffer = (char *) xmalloc(extract_headers->size + 1);
86 fread(buffer, 1, extract_headers->size, src_stream);
87 break;
88 }
89 }
90#if defined BB_DPKG | defined BB_DPKG_DEB
91 else if (S_ISDIR(extract_headers->mode)) {
92 if (function & extract_all_to_fs) {
93 if (create_path(full_name, extract_headers->mode) == FALSE) {
94 perror_msg("Cannot mkdir %s", extract_headers->name);
95 return NULL;
96 }
97 }
98 }
99 else if (S_ISLNK(extract_headers->mode)) {
100 if (function & extract_all_to_fs) {
101 if (symlink(extract_headers->link_name, full_name) < 0) {
102 perror_msg("Cannot create hard link from %s to '%s'", extract_headers->name, extract_headers->link_name);
103 return NULL;
104 }
105 }
106 }
107#endif
108 if (function & extract_verbose_list) {
109 fprintf(out_stream, "%s %d/%d %8d %s ", mode_string(extract_headers->mode),
110 extract_headers->uid, extract_headers->gid,
111 (int) extract_headers->size, time_string(extract_headers->mtime));
112 }
113
114 if ((function & extract_list) || (function & extract_verbose_list)){
115 /* fputs doesnt add a trailing \n, so use fprintf */
116 fprintf(out_stream, "%s\n", extract_headers->name);
117 }
118
119 if (function & extract_preserve_date) {
120 t.actime = extract_headers->mtime;
121 t.modtime = extract_headers->mtime;
122 utime(full_name, &t);
123 }
124 chmod(full_name, extract_headers->mode);
125 free(full_name);
126
127 extract_headers = extract_headers->next;
128 }
129
130 return(buffer);
131}
132
diff --git a/libbb/fgets_str.c b/libbb/fgets_str.c
new file mode 100644
index 000000000..33d8d00cc
--- /dev/null
+++ b/libbb/fgets_str.c
@@ -0,0 +1,64 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
17
18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21
22/*
23 * Continue reading from file until the terminating string is encountered.
24 * Return data as string.
25 * e.g. fgets_str(file, "\n"); will read till end of file
26 */
27
28char *fgets_str(FILE *file, const char *terminating_string)
29{
30 char *linebuf = NULL;
31 const int term_length = strlen(terminating_string);
32 int end_string_offset;
33 int linebufsz = 0;
34 int idx = 0;
35 int ch;
36
37 while (1) {
38 ch = fgetc(file);
39 if (ch == EOF) {
40 break;
41 }
42
43 /* grow the line buffer as necessary */
44 while (idx > linebufsz - 2) {
45 linebuf = realloc(linebuf, linebufsz += 1000); /* GROWBY */
46 }
47
48 linebuf[idx] = ch;
49 idx++;
50
51 /* Check for terminating string */
52 end_string_offset = idx - term_length;
53 if ((end_string_offset > 0) && (memcmp(&linebuf[end_string_offset], terminating_string, term_length) == 0)) {
54 idx -= term_length;
55 break;
56 }
57 }
58 if (idx == 0) {
59 return NULL;
60 }
61 linebuf[idx] = '\0';
62 return(linebuf);
63}
64
diff --git a/libbb/get_tar_gz_headers.c b/libbb/get_tar_gz_headers.c
new file mode 100644
index 000000000..fb9b7b63f
--- /dev/null
+++ b/libbb/get_tar_gz_headers.c
@@ -0,0 +1,39 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16#include <stdio.h>
17#include <unistd.h>
18#include "libbb.h"
19
20file_headers_t *get_tar_gz_headers(FILE *compressed_stream)
21{
22 FILE *uncompressed_stream;
23 file_headers_t *tar_headers_tree;
24 int gunzip_pid;
25 int gz_fd ;
26
27 /* open a stream of decompressed data */
28 gz_fd = gz_open(compressed_stream, &gunzip_pid);
29 if (gz_fd == -1) {
30 error_msg("Couldnt initialise gzip stream");
31 }
32 uncompressed_stream = fdopen(gz_fd, "r");
33 tar_headers_tree = get_tar_headers(uncompressed_stream);
34 fclose(uncompressed_stream);
35 close(gz_fd);
36 gz_close(gunzip_pid);
37
38 return(tar_headers_tree);
39} \ No newline at end of file
diff --git a/libbb/get_tar_headers.c b/libbb/get_tar_headers.c
new file mode 100644
index 000000000..5ddf4d9c3
--- /dev/null
+++ b/libbb/get_tar_headers.c
@@ -0,0 +1,111 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16#include <stdlib.h>
17#include <string.h>
18#include <unistd.h>
19#include "libbb.h"
20
21file_headers_t *get_tar_headers(FILE *tar_stream)
22{
23 typedef struct raw_tar_header {
24 char name[100]; /* 0-99 */
25 char mode[8]; /* 100-107 */
26 char uid[8]; /* 108-115 */
27 char gid[8]; /* 116-123 */
28 char size[12]; /* 124-135 */
29 char mtime[12]; /* 136-147 */
30 char chksum[8]; /* 148-155 */
31 char typeflag; /* 156-156 */
32 char linkname[100]; /* 157-256 */
33 char magic[6]; /* 257-262 */
34 char version[2]; /* 263-264 */
35 char uname[32]; /* 265-296 */
36 char gname[32]; /* 297-328 */
37 char devmajor[8]; /* 329-336 */
38 char devminor[8]; /* 337-344 */
39 char prefix[155]; /* 345-499 */
40 char padding[12]; /* 500-512 */
41 } raw_tar_header_t;
42
43 raw_tar_header_t raw_tar_header;
44 unsigned char *temp = (unsigned char *) &raw_tar_header;
45 file_headers_t *tar_headers_list = (file_headers_t *) calloc(1, sizeof(file_headers_t));
46 file_headers_t *tar_entry;
47 long i;
48 long next_header_offset = 0;
49 long current_offset = 0;
50
51 while (fread((char *) &raw_tar_header, 1, 512, tar_stream) == 512) {
52 long sum = 0;
53 current_offset += 512;
54
55 /* Check header has valid magic, unfortunately some tar files
56 * have empty (0'ed) tar entries at the end, which will
57 * cause this to fail, so fail silently for now
58 */
59 if (strncmp(raw_tar_header.magic, "ustar", 5) != 0) {
60// error_msg("invalid magic, [%s]\n", raw_tar_header.magic);
61 break;
62 }
63
64 /* Do checksum on headers */
65 for (i = 0; i < 148 ; i++) {
66 sum += temp[i];
67 }
68 sum += ' ' * 8;
69 for (i = 156; i < 512 ; i++) {
70 sum += temp[i];
71 }
72 if (sum != strtol(raw_tar_header.chksum, NULL, 8)) {
73 error_msg("Invalid tar header checksum");
74 break;
75 }
76
77 /* convert to type'ed variables */
78 tar_entry = xcalloc(1, sizeof(file_headers_t));
79 tar_entry->name = xstrdup(raw_tar_header.name);
80
81 tar_entry->offset = (off_t) current_offset;
82 parse_mode(raw_tar_header.mode, &tar_entry->mode);
83 tar_entry->uid = strtol(raw_tar_header.uid, NULL, 8);
84 tar_entry->gid = strtol(raw_tar_header.gid, NULL, 8);
85 tar_entry->size = strtol(raw_tar_header.size, NULL, 8);
86 tar_entry->mtime = strtol(raw_tar_header.mtime, NULL, 8);
87 tar_entry->link_name = xstrdup(raw_tar_header.linkname);
88// tar_entry->devmajor = strtol(rawHeader->devmajor, NULL, 8);
89// tar_entry->devminor = strtol(rawHeader->devminor, NULL, 8);
90
91 tar_headers_list = append_archive_list(tar_headers_list, tar_entry);
92
93 /* start of next header is at */
94 next_header_offset = current_offset + tar_entry->size;
95
96 if (tar_entry->size % 512 != 0) {
97 next_header_offset += (512 - tar_entry->size % 512);
98 }
99 /*
100 * Seek to start of next block, cant use fseek as unzip() does support it
101 */
102 while (current_offset < next_header_offset) {
103 if (fgetc(tar_stream) == EOF) {
104 break;
105 }
106 current_offset++;
107 }
108 }
109 return(tar_headers_list);
110}
111
diff --git a/libbb/read_text_file_to_buffer.c b/libbb/read_text_file_to_buffer.c
deleted file mode 100644
index ef64ad712..000000000
--- a/libbb/read_text_file_to_buffer.c
+++ /dev/null
@@ -1,38 +0,0 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include "libbb.h"
5
6/*
7 * Reads consecutive lines from file line that start with end_string
8 * read finishes at an empty line or eof
9 */
10extern char *read_text_file_to_buffer(FILE *src_file)
11{
12 char *line = NULL;
13 char *buffer = NULL;
14 int buffer_length = 0;
15 int line_length = 0;
16
17 buffer = xmalloc(1);
18 strcpy(buffer, "");
19
20 /* Loop until line is empty, or just one char, which will be '\n' */
21 do {
22 line = get_line_from_file(src_file);
23 if (line == NULL) {
24 break;
25 }
26 line_length = strlen(line);
27 buffer_length += line_length + 1;
28 buffer = (char *) xrealloc(buffer, buffer_length + 1);
29 strcat(buffer, line);
30 free(line);
31 } while (line_length > 1);
32
33 if (strlen(buffer) == 0) {
34 return(NULL);
35 } else {
36 return(strdup(buffer));
37 }
38} \ No newline at end of file
diff --git a/libbb/untar.c b/libbb/untar.c
deleted file mode 100644
index b6b44967f..000000000
--- a/libbb/untar.c
+++ /dev/null
@@ -1,225 +0,0 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 *
16 * NOTE: This is used by deb_extract to avoid calling the whole tar applet.
17 * Its functionality should be merged with tar to avoid duplication
18 */
19
20#include <stdlib.h>
21#include <string.h>
22#include <unistd.h>
23#include "libbb.h"
24
25/*
26 * stdout can be redircted to FILE *output
27 * If const char *file_prefix isnt NULL is prepended to all the extracted filenames.
28 * The purpose of const char *argument depends on the value of const int untar_function
29 */
30
31extern char *untar(FILE *src_tar_file, FILE *output, const int untar_function,
32 const char *argument, const char *file_prefix)
33{
34 typedef struct raw_tar_header {
35 char name[100]; /* 0-99 */
36 char mode[8]; /* 100-107 */
37 char uid[8]; /* 108-115 */
38 char gid[8]; /* 116-123 */
39 char size[12]; /* 124-135 */
40 char mtime[12]; /* 136-147 */
41 char chksum[8]; /* 148-155 */
42 char typeflag; /* 156-156 */
43 char linkname[100]; /* 157-256 */
44 char magic[6]; /* 257-262 */
45 char version[2]; /* 263-264 */
46 char uname[32]; /* 265-296 */
47 char gname[32]; /* 297-328 */
48 char devmajor[8]; /* 329-336 */
49 char devminor[8]; /* 337-344 */
50 char prefix[155]; /* 345-499 */
51 char padding[12]; /* 500-512 */
52 } raw_tar_header_t;
53
54 raw_tar_header_t raw_tar_header;
55 unsigned char *temp = (unsigned char *) &raw_tar_header;
56 long i;
57 long next_header_offset = 0;
58 long uncompressed_count = 0;
59 size_t size;
60 mode_t mode;
61
62 while (fread((char *) &raw_tar_header, 1, 512, src_tar_file) == 512) {
63 long sum = 0;
64
65 if (ferror(src_tar_file) || feof(src_tar_file)) {
66 perror_msg("untar: ");
67 break;
68 }
69
70 uncompressed_count += 512;
71
72 /* Check header has valid magic */
73 if (strncmp(raw_tar_header.magic, "ustar", 5) != 0) {
74/*
75 * FIXME, Need HELP with this
76 *
77 * This has to fail silently or it incorrectly reports errors when called from
78 * deb_extract.
79 * The problem is deb_extract decompresses the .gz file in a child process and
80 * untar reads from the child proccess. The child process finishes and exits,
81 * but fread reads 0's from the src_tar_file even though the child
82 * closed its handle.
83 */
84// error_msg("Invalid tar magic");
85 break;
86 }
87
88 /* Do checksum on headers */
89 for (i = 0; i < 148 ; i++) {
90 sum += temp[i];
91 }
92 sum += ' ' * 8;
93 for (i = 156; i < 512 ; i++) {
94 sum += temp[i];
95 }
96 if (sum != strtol(raw_tar_header.chksum, NULL, 8)) {
97 error_msg("Invalid tar header checksum");
98 break;
99 }
100
101 /* convert to type'ed variables */
102 size = strtol(raw_tar_header.size, NULL, 8);
103 parse_mode(raw_tar_header.mode, &mode);
104
105 /* start of next header is at */
106 next_header_offset = uncompressed_count + size;
107 if (size % 512 != 0) {
108 next_header_offset += (512 - size % 512);
109 }
110
111 /* If an exclude list is specified check current file against list */
112#if 0
113 if (*exclude_list != NULL) {
114 i = 0;
115 while (exclude_list[i] != 0) {
116 if (strncmp(exclude_list[i], raw_tar_header.name, strlen(raw_tar_header.name)) == 0) {
117 break;
118 }
119 i++;
120 }
121 if (exclude_list[i] != 0) {
122 continue;
123 }
124 }
125#endif
126 if (untar_function & (extract_contents | extract_verbose_extract | extract_contents_to_file)) {
127 fprintf(output, "%s\n", raw_tar_header.name);
128 }
129
130 switch (raw_tar_header.typeflag ) {
131 case '0':
132 case '\0': {
133 /* If the name ends in a '/' then assume it is
134 * supposed to be a directory, and fall through
135 */
136 int name_length = strlen(raw_tar_header.name);
137 if (raw_tar_header.name[name_length - 1] != '/') {
138 switch (untar_function) {
139 case (extract_extract):
140 case (extract_verbose_extract):
141 case (extract_control): {
142 FILE *dst_file = NULL;
143 char *full_name;
144
145 if (file_prefix != NULL) {
146 full_name = xmalloc(strlen(argument) + strlen(file_prefix) + name_length + 3);
147 sprintf(full_name, "%s/%s.%s", argument, file_prefix, strrchr(raw_tar_header.name, '/') + 1);
148 } else {
149 full_name = concat_path_file(argument, raw_tar_header.name);
150 }
151 dst_file = wfopen(full_name, "w");
152 copy_file_chunk(src_tar_file, dst_file, (unsigned long long) size);
153 uncompressed_count += size;
154 fclose(dst_file);
155 chmod(full_name, mode);
156 free(full_name);
157 }
158 break;
159 case (extract_info):
160 if (strstr(raw_tar_header.name, argument) != NULL) {
161 copy_file_chunk(src_tar_file, stdout, (unsigned long long) size);
162 uncompressed_count += size;
163 }
164 break;
165 case (extract_field):
166 if (strstr(raw_tar_header.name, "./control") != NULL) {
167 return(read_text_file_to_buffer(src_tar_file));
168 }
169 break;
170 }
171 break;
172 }
173 }
174 case '5':
175 if (untar_function & (extract_extract | extract_verbose_extract | extract_control)) {
176 int ret;
177 char *dir;
178 dir = concat_path_file(argument, raw_tar_header.name);
179 ret = create_path(dir, mode);
180 free(dir);
181 if (ret == FALSE) {
182 perror_msg("%s: Cannot mkdir", raw_tar_header.name);
183 return NULL;
184 }
185 chmod(dir, mode);
186 }
187 break;
188 case '1':
189 if (untar_function & (extract_extract | extract_verbose_extract | extract_control)) {
190 if (link(raw_tar_header.linkname, raw_tar_header.name) < 0) {
191 perror_msg("%s: Cannot create hard link to '%s'", raw_tar_header.name, raw_tar_header.linkname);
192 return NULL;
193 }
194 }
195 break;
196 case '2':
197 if (untar_function & (extract_extract | extract_verbose_extract | extract_control)) {
198 if (symlink(raw_tar_header.linkname, raw_tar_header.name) < 0) {
199 perror_msg("%s: Cannot create symlink to '%s'", raw_tar_header.name, raw_tar_header.linkname);
200 return NULL;
201 }
202 }
203 break;
204 case '3':
205 case '4':
206 case '6':
207// if (tarExtractSpecial( &header, extractFlag, tostdoutFlag)==FALSE)
208// errorFlag=TRUE;
209// break;
210 default:
211 error_msg("Unknown file type '%c' in tar file", raw_tar_header.typeflag);
212 return NULL;
213 }
214 /*
215 * Seek to start of next block, cant use fseek as unzip() does support it
216 */
217 while (uncompressed_count < next_header_offset) {
218 if (fgetc(src_tar_file) == EOF) {
219 break;
220 }
221 uncompressed_count++;
222 }
223 }
224 return NULL;
225}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-13 17:36:35 +0000