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-rw-r--r--libbb/unarchive.c96
1 files changed, 42 insertions, 54 deletions
diff --git a/libbb/unarchive.c b/libbb/unarchive.c
index 07c24f2..8f82a10 100644
--- a/libbb/unarchive.c
+++ b/libbb/unarchive.c
@@ -25,6 +25,8 @@
#include <string.h>
#include <unistd.h>
#include <utime.h>
+#include <libgen.h>
+
#include "libbb.h"
#define CONFIG_FEATURE_TAR_OLDGNU_COMPATABILITY 1
@@ -35,21 +37,11 @@ static char *longname = NULL;
static char *linkname = NULL;
#endif
-extern void seek_sub_file(FILE *src_stream, const int count);
-extern char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *file_entry,
- const int function, const char *prefix);
-extern ssize_t seek_by_read(FILE* fd, size_t len);
-
-
-#ifdef L_archive_offset
off_t archive_offset;
-#else
-extern off_t archive_offset;
-#endif
-#ifdef L_seek_sub_file
#define SEEK_BUF 4096
-ssize_t seek_by_read(FILE* fd, size_t len)
+static ssize_t
+seek_by_read(FILE* fd, size_t len)
{
ssize_t cc, total = 0;
char buf[SEEK_BUF];
@@ -68,18 +60,16 @@ ssize_t seek_by_read(FILE* fd, size_t len)
return total;
}
-void seek_sub_file(FILE *src_stream, const int count)
+static void
+seek_sub_file(FILE *src_stream, const int count)
{
/* Try to fseek as faster */
archive_offset += count;
seek_by_read(src_stream, count);
return;
}
-#endif
-
-#ifdef L_extract_archive
/* Extract the data postioned at src_stream to either filesystem, stdout or
* buffer depending on the value of 'function' which is defined in libbb.h
*
@@ -92,8 +82,10 @@ void seek_sub_file(FILE *src_stream, const int count)
* For this reason if prefix does point to a dir then it must end with a
* trailing '/' or else the last dir will be assumed to be the file prefix
*/
-char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *file_entry,
- const int function, const char *prefix)
+static char *
+extract_archive(FILE *src_stream, FILE *out_stream,
+ const file_header_t *file_entry, const int function,
+ const char *prefix)
{
FILE *dst_stream = NULL;
char *full_name = NULL;
@@ -123,9 +115,9 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
strcat(full_link_name, file_entry->link_name);
}
} else {
- full_name = strdup(file_entry->name);
+ full_name = xstrdup(file_entry->name);
if ( file_entry->link_name )
- full_link_name = strdup(file_entry->link_name);
+ full_link_name = xstrdup(file_entry->link_name);
}
@@ -266,13 +258,14 @@ cleanup:
return(buffer); /* Maybe we should say if failed */
}
-#endif
-#ifdef L_unarchive
-char *unarchive(FILE *src_stream, FILE *out_stream,
+static char *
+unarchive(FILE *src_stream, FILE *out_stream,
file_header_t *(*get_headers)(FILE *),
void (*free_headers)(file_header_t *),
- const int extract_function, const char *prefix, const char **extract_names)
+ const int extract_function,
+ const char *prefix,
+ const char **extract_names)
{
file_header_t *file_entry;
int extract_flag;
@@ -318,10 +311,9 @@ char *unarchive(FILE *src_stream, FILE *out_stream,
return(buffer);
}
-#endif
-#ifdef L_get_header_ar
-file_header_t *get_header_ar(FILE *src_stream)
+static file_header_t *
+get_header_ar(FILE *src_stream)
{
file_header_t *typed;
union {
@@ -406,23 +398,23 @@ file_header_t *get_header_ar(FILE *src_stream)
return(typed);
}
-void free_header_ar(file_header_t *ar_entry)
+static void
+free_header_ar(file_header_t *ar_entry)
{
- if (ar_entry == NULL) {
- return;
- }
+ if (ar_entry == NULL)
+ return;
- free(ar_entry->name);
- free(ar_entry->link_name);
+ free(ar_entry->name);
+ if (ar_entry->link_name)
+ free(ar_entry->link_name);
- free(ar_entry);
+ free(ar_entry);
}
-#endif
-#ifdef L_get_header_tar
-file_header_t *get_header_tar(FILE *tar_stream)
-{
+static file_header_t *
+get_header_tar(FILE *tar_stream)
+{
union {
unsigned char raw[512];
struct {
@@ -593,22 +585,21 @@ file_header_t *get_header_tar(FILE *tar_stream)
return(tar_entry);
}
-void free_header_tar(file_header_t *tar_entry)
+static void
+free_header_tar(file_header_t *tar_entry)
{
- if (tar_entry == NULL) {
- return;
- }
+ if (tar_entry == NULL)
+ return;
- free(tar_entry->name);
- free(tar_entry->link_name);
+ free(tar_entry->name);
+ if (tar_entry->link_name);
+ free(tar_entry->link_name);
- free(tar_entry);
+ free(tar_entry);
}
-#endif
-
-#ifdef L_deb_extract
-char *deb_extract(const char *package_filename, FILE *out_stream,
+char *
+deb_extract(const char *package_filename, FILE *out_stream,
const int extract_function, const char *prefix, const char *filename)
{
FILE *deb_stream = NULL;
@@ -662,13 +653,11 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
output_buffer = unarchive(uncompressed_stream, out_stream, get_header_tar, free_header_tar, extract_function, prefix, file_list);
fclose(uncompressed_stream);
gz_close(gunzip_pid);
- free (ar_header->name);
- free (ar_header);
+ free_header_ar(ar_header);
break;
}
seek_sub_file(deb_stream, ar_header->size);
- free (ar_header->name);
- free (ar_header);
+ free_header_ar(ar_header);
}
goto cleanup;
} else if (strncmp(ar_magic, "\037\213", 2) == 0) {
@@ -732,4 +721,3 @@ cleanup:
return output_buffer;
}
-#endif