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authorGlenn L McGrath2002-09-25 02:47:48 +0000
committerGlenn L McGrath2002-09-25 02:47:48 +0000
commit7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23 (patch)
treef38c7ef4317eea28c6abdb0adbbb286fe041711e /archival/gunzip.c
parentecfa290cfd4953598e6d91989bd66ac16e135f84 (diff)
downloadbusybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.zip
busybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.tar.gz
New common unarchive code.
Diffstat (limited to 'archival/gunzip.c')
-rw-r--r--archival/gunzip.c40
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 */