New common unarchive code.

2 files changed, 88 insertions, 42 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 6ab942b..bd0d1e9 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -48,10 +48,6 @@
 # include "sha1.h"
 #endif
 
-/* Compatability with ANSI C */
-#ifndef inline
-# define inline
-#endif
 
 #if (__GNU_LIBRARY__ < 5) && (!defined __dietlibc__)
 /* libc5 doesn't define socklen_t */
@@ -74,6 +70,9 @@ char *strtok_r(char *s, const char *delim, char **ptrptr);
 #define BUF_SIZE        8192
 #define EXPAND_ALLOC    1024
 
+static inline int is_decimal(int ch) { return ((ch >= '0') && (ch <= '9')); }
+static inline int is_octal(int ch)   { return ((ch >= '0') && (ch <= '7')); }
+
 /* Macros for min/max.  */
 #ifndef MIN
 #define	MIN(a,b) (((a)<(b))?(a):(b))
@@ -83,8 +82,6 @@ char *strtok_r(char *s, const char *delim, char **ptrptr);
 #define	MAX(a,b) (((a)>(b))?(a):(b))
 #endif
 
-
-
 extern void show_usage(void) __attribute__ ((noreturn));
 extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
 extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
@@ -228,10 +225,7 @@ extern long arith (const char *startbuf, int *errcode);
 int read_package_field(const char *package_buffer, char **field_name, char **field_value);
 char *fgets_str(FILE *file, const char *terminating_string);
 
-extern int inflate(FILE *in, FILE *out);
-extern int unzip(FILE *l_in_file, FILE *l_out_file);
-extern void gz_close(int gunzip_pid);
-extern FILE *gz_open(FILE *compressed_file, int *pid);
+extern int inflate(int in, int out);
 
 extern struct hostent *xgethostbyname(const char *name);
 extern struct hostent *xgethostbyname2(const char *name, int af);
@@ -335,4 +329,11 @@ extern char *pw_encrypt(const char *clear, const char *salt);
 extern struct spwd *pwd_to_spwd(const struct passwd *pw);
 extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
 
+//extern int xopen(const char *pathname, int flags, mode_t mode);
+extern int xopen(const char *pathname, int flags);
+extern ssize_t xread(int fd, void *buf, size_t count);
+extern ssize_t xread_all_eof(int fd, void *buf, size_t count);
+extern void xread_all(int fd, void *buf, size_t count);
+extern unsigned char xread_char(int fd);
+
 #endif /* __LIBCONFIG_H__ */
diff --git a/include/unarchive.h b/include/unarchive.h
index ffddc89..e564e95 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -1,21 +1,19 @@
-#include <stdio.h>		/* for FILE */
-#include <unistd.h>		/* for off_t */
-
-enum extract_functions_e {
-	extract_verbose_list = 1,
-	extract_list = 2,
-	extract_one_to_buffer = 4,
-	extract_to_stdout = 8,
-	extract_all_to_fs = 16,
-	extract_preserve_date = 32,
-	extract_data_tar_gz = 64,
-	extract_control_tar_gz = 128,
-	extract_unzip_only = 256,
-	extract_unconditional = 512,
-	extract_create_leading_dirs = 1024,
-	extract_quiet = 2048,
-	extract_exclude_list = 4096
-};
+#ifndef	__UNARCHIVE_H__
+#define	__UNARCHIVE_H__
+
+#define ARCHIVE_PRESERVE_DATE	1
+#define ARCHIVE_CREATE_LEADING_DIRS		2
+#define ARCHIVE_EXTRACT_UNCONDITIONAL	4
+#define ARCHIVE_EXTRACT_QUIET	8
+
+#include <sys/types.h>
+
+typedef struct gunzip_s {
+	unsigned short buffer_count;
+	unsigned char *buffer;
+	unsigned int crc;
+	unsigned int count;
+} gunzip_t;
 
 typedef struct file_headers_s {
 	char *name;
@@ -26,23 +24,70 @@ typedef struct file_headers_s {
 	mode_t mode;
 	time_t mtime;
 	dev_t device;
-	int (*extract_func) (FILE *, FILE *);
 } file_header_t;
 
-file_header_t *get_header_ar(FILE * in_file);
-file_header_t *get_header_cpio(FILE * src_stream);
-file_header_t *get_header_tar(FILE * tar_stream);
-file_header_t *get_header_zip(FILE * zip_stream);
+typedef struct llist_s {
+	const char *data;
+	const struct llist_s *link;
+} llist_t;
+
+typedef struct archive_handle_s {
+	/* define if the header and data compenent should processed */
+	char (*filter)(const llist_t *, const llist_t *, const char *);
+	const llist_t *accept;
+	const llist_t *reject;
+
+	/* Contains the processed header entry */
+	file_header_t *file_header;
+
+	/* process the header component, e.g. tar -t */
+	void (*action_header)(const file_header_t *);
+
+	/* process the data componenet, e.g. extract to filesystem */
+	void (*action_data)(struct archive_handle_s *);
+	char (*action_data_subarchive)(struct archive_handle_s *);
+
+	/* Contains the handle to a sub archive */
+	struct archive_handle_s *sub_archive;
+
+	/* The raw stream as read from disk or stdin */
+	int src_fd;
+
+	/* Count the number of bytes processed */
+	off_t offset;
+
+	/* Misc. stuff */
+	unsigned char flags;
+
+} archive_handle_t;
+
+extern archive_handle_t *init_handle(void);
+
+extern char filter_accept_all(const llist_t *accept_list, const llist_t *reject_list, const char *key);
+extern char filter_accept_list(const llist_t *accept_list, const llist_t *reject_list, const char *key);
+extern char filter_accept_reject_list(const llist_t *accept_list, const llist_t *reject_list, const char *key);
+
+extern void unpack_ar_archive(archive_handle_t *ar_archive);
+
+extern void data_gunzip(archive_handle_t *archive_handle);
+extern void data_skip(archive_handle_t *archive_handle);
+extern void data_extract_all(archive_handle_t *archive_handle);
+extern void data_extract_to_stdout(archive_handle_t *archive_handle);
+
+extern void header_skip(const file_header_t *file_header);
+extern void header_list(const file_header_t *file_header);
+extern void header_verbose_list(const file_header_t *file_header);
 
-void seek_sub_file(FILE * src_stream, const int count);
+extern void check_header_gzip(int src_fd);
+extern void check_trailer_gzip(int src_fd);
 
-extern off_t archive_offset;
+extern char get_header_ar(archive_handle_t *archive_handle);
+extern char get_header_tar(archive_handle_t *archive_handle);
+extern char get_header_tar_gz(archive_handle_t *archive_handle);
 
-char *unarchive(FILE * src_stream, FILE * out_stream,
-				file_header_t * (*get_headers) (FILE *),
-				const int extract_function, const char *prefix,
-				char **include_name, char **exclude_name);
+//extern void seek_sub_file(int src_fd, unsigned int amount);
+extern const unsigned short data_align(const int src_fd, const unsigned int offset, const unsigned short align_to);
+extern const llist_t *add_to_list(const llist_t *old_head, const char *new_item);
+extern int copy_file_chunk_fd(int src_fd, int dst_fd, unsigned long long chunksize);
 
-char *deb_extract(const char *package_filename, FILE * out_stream,
-				  const int extract_function, const char *prefix,
-				  const char *filename);
+#endif