diff options
Diffstat (limited to 'archival/gunzip.c')
| -rw-r--r-- | archival/gunzip.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/archival/gunzip.c b/archival/gunzip.c index ac2fb17..4489204 100644 --- a/archival/gunzip.c +++ b/archival/gunzip.c @@ -64,7 +64,12 @@ static char *license_msg[] = { #include <string.h> #include <unistd.h> #include <getopt.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + #include "busybox.h" +#include "unarchive.h" const char gunzip_to_stdout = 1; const char gunzip_force = 2; @@ -100,23 +105,20 @@ extern int gunzip_main(int argc, char **argv) } do { - FILE *in_file, *out_file; struct stat stat_buf; const char *old_path = argv[optind]; const char *delete_path = NULL; char *new_path = NULL; + int src_fd; + int dst_fd; optind++; if (old_path == NULL || strcmp(old_path, "-") == 0) { - in_file = stdin; + src_fd = fileno(stdin); flags |= gunzip_to_stdout; } else { - in_file = wfopen(old_path, "r"); - if (in_file == NULL) { - status = EXIT_FAILURE; - break; - } + src_fd = xopen(old_path, O_RDONLY); /* Get the time stamp on the input file. */ if (stat(old_path, &stat_buf) < 0) { @@ -125,16 +127,16 @@ extern int gunzip_main(int argc, char **argv) } /* Check that the input is sane. */ - if (isatty(fileno(in_file)) && ((flags & gunzip_force) == 0)) { + if (isatty(src_fd) && ((flags & gunzip_force) == 0)) { error_msg_and_die ("compressed data not read from terminal. Use -f to force it."); } /* Set output filename and number */ if (flags & gunzip_test) { - out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */ + dst_fd = xopen("/dev/null", O_WRONLY); /* why does test use filenum 2 ? */ } else if (flags & gunzip_to_stdout) { - out_file = stdout; + dst_fd = fileno(stdout); } else { char *extension; @@ -151,7 +153,7 @@ extern int gunzip_main(int argc, char **argv) } /* Open output file */ - out_file = xfopen(new_path, "w"); + dst_fd = xopen(new_path, O_WRONLY | O_CREAT); /* Set permissions on the file */ chmod(new_path, stat_buf.st_mode); @@ -161,16 +163,22 @@ extern int gunzip_main(int argc, char **argv) } /* do the decompression, and cleanup */ - if ((unzip(in_file, out_file) != 0) && (new_path)) { + check_header_gzip(src_fd); + if (inflate(src_fd, dst_fd) != 0) { + error_msg("Error inflating"); + } + check_trailer_gzip(src_fd); + + if ((status != EXIT_SUCCESS) && (new_path)) { /* Unzip failed, remove new path instead of old path */ delete_path = new_path; } - if (out_file != stdout) { - fclose(out_file); + if (dst_fd != fileno(stdout)) { + close(dst_fd); } - if (in_file != stdin) { - fclose(in_file); + if (src_fd != fileno(stdin)) { + close(src_fd); } /* delete_path will be NULL if in test mode or from stdin */ |