+char *last_char_is(const char *s, int c);
+
+void *get_header_ar(FILE *in_file);
+void *get_header_cpio(FILE *src_stream);
+void *get_header_tar(FILE *tar_stream);
+
+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_dirs = 1024
+};
+char *unarchive(FILE *src_stream, void *(*get_header)(FILE *),
+ const int extract_function, const char *prefix, char **extract_names);
+char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
+ const char *prefix, const char *filename);
+char *read_package_field(const char *package_buffer);
+char *fgets_str(FILE *file, const char *terminating_string);