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authorGravatar Denys Vlasenko <vda.linux@googlemail.com>2017-08-10 09:30:38 +0200
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2017-08-10 09:32:19 +0200
commit3fa9262dcd4186a9a5cabb5a7586597187a62565 (patch)
tree51e4566429c3f5b2c4c18cadfc0182cd18eb460d /archival/rpm.c
parent3bc2317c610af0a34c665e0e84169caa2653ff41 (diff)
downloadbusybox-3fa9262dcd4186a9a5cabb5a7586597187a62565.tar.gz
busybox-3fa9262dcd4186a9a5cabb5a7586597187a62565.tar.bz2
rpm,rpm2cpio: put both sources into one file, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/rpm.c')
-rw-r--r--archival/rpm.c97
1 files changed, 96 insertions, 1 deletions
diff --git a/archival/rpm.c b/archival/rpm.c
index 89b36dd46..bb6cc4520 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -6,7 +6,6 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
//config:config RPM
//config: bool "rpm (33 kb)"
//config: default y
@@ -14,6 +13,7 @@
//config: Mini RPM applet - queries and extracts RPM packages.
//applet:IF_RPM(APPLET(rpm, BB_DIR_BIN, BB_SUID_DROP))
+
//kbuild:lib-$(CONFIG_RPM) += rpm.o
#include "libbb.h"
@@ -479,3 +479,98 @@ int rpm_main(int argc, char **argv)
return 0;
}
+
+/*
+ * Mini rpm2cpio implementation for busybox
+ *
+ * Copyright (C) 2001 by Laurence Anderson
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config RPM2CPIO
+//config: bool "rpm2cpio (20 kb)"
+//config: default y
+//config: help
+//config: Converts a RPM file into a CPIO archive.
+
+//applet:IF_RPM2CPIO(APPLET(rpm2cpio, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_RPM2CPIO) += rpm.o
+
+//usage:#define rpm2cpio_trivial_usage
+//usage: "PACKAGE.rpm"
+//usage:#define rpm2cpio_full_usage "\n\n"
+//usage: "Output a cpio archive of the rpm file"
+
+enum { rpm_fd = STDIN_FILENO };
+
+static unsigned skip_header(void)
+{
+ struct rpm_header header;
+ unsigned len;
+
+ xread(rpm_fd, &header, sizeof(header));
+// if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC_STR, 3) != 0) {
+// bb_error_msg_and_die("invalid RPM header magic");
+// }
+// if (header.version != 1) {
+// bb_error_msg_and_die("unsupported RPM header version");
+// }
+ if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER)) {
+ bb_error_msg_and_die("invalid RPM header magic or unsupported version");
+ // ": %x != %x", header.magic_and_ver, htonl(RPM_HEADER_MAGICnVER));
+ }
+
+ /* Seek past index entries, and past store */
+ len = 16 * ntohl(header.entries) + ntohl(header.size);
+ seek_by_jump(rpm_fd, len);
+
+ return sizeof(header) + len;
+}
+
+/* No getopt required */
+int rpm2cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
+{
+ struct rpm_lead lead;
+ unsigned pos;
+
+ if (argv[1]) {
+ xmove_fd(xopen(argv[1], O_RDONLY), rpm_fd);
+ }
+ xread(rpm_fd, &lead, sizeof(lead));
+
+ /* Just check the magic, the rest is irrelevant */
+ if (lead.magic != htonl(RPM_LEAD_MAGIC)) {
+ bb_error_msg_and_die("invalid RPM magic");
+ }
+
+ /* Skip the signature header, align to 8 bytes */
+ pos = skip_header();
+ seek_by_jump(rpm_fd, (-(int)pos) & 7);
+
+ /* Skip the main header */
+ skip_header();
+
+ //if (SEAMLESS_COMPRESSION) - we do this at the end instead.
+ // /* We need to know whether child (gzip/bzip/etc) exits abnormally */
+ // signal(SIGCHLD, check_errors_in_children);
+
+//TODO: look for rpm tag RPMTAG_PAYLOADCOMPRESSOR (dec 1125, hex 0x465),
+// if the value is "lzma", set up decompressor without detection
+// (lzma can't be detected).
+
+ setup_unzip_on_fd(rpm_fd, /*fail_if_not_compressed:*/ 1);
+ if (bb_copyfd_eof(rpm_fd, STDOUT_FILENO) < 0)
+ bb_error_msg_and_die("error unpacking");
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ close(rpm_fd);
+ }
+
+ if (SEAMLESS_COMPRESSION) {
+ check_errors_in_children(0);
+ return bb_got_signal;
+ }
+ return EXIT_SUCCESS;
+}