rpm: code shrink. Now uses open_zipped's logic (factored out into setup_unzip_on_fd())
function old new delta setup_unzip_on_fd - 80 +80 open_zipped 176 113 -63 rpm_main 1672 1355 -317 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 80/-380) Total: -300 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
parent
b8ba6b66f5
commit
27653adc8b
@ -9,8 +9,8 @@
|
||||
|
||||
#include "libbb.h"
|
||||
#include "unarchive.h"
|
||||
#include "rpm.h"
|
||||
|
||||
#define RPM_HEADER_MAGIC "\216\255\350"
|
||||
#define RPM_CHAR_TYPE 1
|
||||
#define RPM_INT8_TYPE 2
|
||||
#define RPM_INT16_TYPE 3
|
||||
@ -46,6 +46,7 @@
|
||||
#define TAG_DIRINDEXES 1116
|
||||
#define TAG_BASENAMES 1117
|
||||
#define TAG_DIRNAMES 1118
|
||||
|
||||
#define RPMFILE_CONFIG (1 << 0)
|
||||
#define RPMFILE_DOC (1 << 1)
|
||||
|
||||
@ -147,8 +148,14 @@ int rpm_main(int argc, char **argv)
|
||||
time_t bdate_time;
|
||||
struct tm *bdate_ptm;
|
||||
char bdatestring[50];
|
||||
printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)");
|
||||
printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)");
|
||||
const char *p;
|
||||
|
||||
p = rpm_getstr(TAG_PREFIXS, 0);
|
||||
if (!p) p = "(not relocateable)";
|
||||
printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
|
||||
p = rpm_getstr(TAG_VENDOR, 0);
|
||||
if (!p) p = "(none)";
|
||||
printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
|
||||
bdate_time = rpm_getint(TAG_BUILDTIME, 0);
|
||||
bdate_ptm = localtime(&bdate_time);
|
||||
strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
|
||||
@ -190,20 +197,15 @@ int rpm_main(int argc, char **argv)
|
||||
static void extract_cpio_gz(int fd)
|
||||
{
|
||||
archive_handle_t *archive_handle;
|
||||
unsigned char magic[2];
|
||||
#if BB_MMU
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*xformer)(int src_fd, int dst_fd);
|
||||
enum { xformer_prog = 0 };
|
||||
#else
|
||||
enum { xformer = 0 };
|
||||
const char *xformer_prog;
|
||||
#endif
|
||||
|
||||
/* Initialize */
|
||||
archive_handle = init_handle();
|
||||
archive_handle->seek = seek_by_read;
|
||||
//archive_handle->action_header = header_list;
|
||||
archive_handle->action_data = data_extract_all;
|
||||
#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
|
||||
archive_handle->action_header = header_list;
|
||||
archive_handle->action_data = data_skip;
|
||||
#endif
|
||||
archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
|
||||
/* compat: overwrite existing files.
|
||||
* try "rpm -i foo.src.rpm" few times in a row -
|
||||
@ -213,46 +215,15 @@ static void extract_cpio_gz(int fd)
|
||||
archive_handle->src_fd = fd;
|
||||
/*archive_handle->offset = 0; - init_handle() did it */
|
||||
|
||||
// TODO: open_zipped does the same
|
||||
|
||||
xread(archive_handle->src_fd, &magic, 2);
|
||||
#if BB_MMU
|
||||
xformer = unpack_gz_stream;
|
||||
#else
|
||||
xformer_prog = "gunzip";
|
||||
#endif
|
||||
if (magic[0] != 0x1f || magic[1] != 0x8b) {
|
||||
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
|| magic[0] != 'B' || magic[1] != 'Z'
|
||||
) {
|
||||
bb_error_msg_and_die("no gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
" magic");
|
||||
}
|
||||
#if BB_MMU
|
||||
xformer = unpack_bz2_stream;
|
||||
#else
|
||||
xformer_prog = "bunzip2";
|
||||
#endif
|
||||
} else {
|
||||
#if !BB_MMU
|
||||
/* NOMMU version of open_transformer execs an external unzipper that should
|
||||
* have the file position at the start of the file */
|
||||
xlseek(archive_handle->src_fd, 0, SEEK_SET);
|
||||
#endif
|
||||
}
|
||||
|
||||
xchdir("/"); /* Install RPM's to root */
|
||||
open_transformer(archive_handle->src_fd, xformer, xformer_prog);
|
||||
archive_handle->offset = 0;
|
||||
setup_unzip_on_fd(archive_handle->src_fd /*, fail_if_not_detected: 1*/);
|
||||
while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
static rpm_index **rpm_gettags(int fd, int *num_tags)
|
||||
{
|
||||
/* We should never need mode than 200, and realloc later */
|
||||
/* We should never need more than 200 (shrink via realloc later) */
|
||||
rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
|
||||
int pass, tagindex = 0;
|
||||
|
||||
@ -260,27 +231,16 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
|
||||
|
||||
/* 1st pass is the signature headers, 2nd is the main stuff */
|
||||
for (pass = 0; pass < 2; pass++) {
|
||||
struct {
|
||||
char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
|
||||
uint8_t version; /* 1 byte version number */
|
||||
uint32_t reserved; /* 4 bytes reserved */
|
||||
uint32_t entries; /* Number of entries in header (4 bytes) */
|
||||
uint32_t size; /* Size of store (4 bytes) */
|
||||
} header;
|
||||
struct BUG_header {
|
||||
char BUG_header[sizeof(header) == 16 ? 1 : -1];
|
||||
};
|
||||
struct rpm_header header;
|
||||
rpm_index *tmpindex;
|
||||
int storepos;
|
||||
|
||||
xread(fd, &header, sizeof(header));
|
||||
if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
|
||||
return NULL; /* Invalid magic */
|
||||
if (header.version != 1)
|
||||
return NULL; /* This program only supports v1 headers */
|
||||
if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
|
||||
return NULL; /* Invalid magic, or not version 1 */
|
||||
header.size = ntohl(header.size);
|
||||
header.entries = ntohl(header.entries);
|
||||
storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
|
||||
storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
|
||||
|
||||
while (header.entries--) {
|
||||
tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
|
||||
@ -292,14 +252,16 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
|
||||
if (pass == 0)
|
||||
tmpindex->tag -= 743;
|
||||
}
|
||||
xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
|
||||
storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
|
||||
/* Skip padding to 8 byte boundary after reading signature headers */
|
||||
if (pass == 0)
|
||||
xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
|
||||
xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
|
||||
}
|
||||
tags = xrealloc(tags, tagindex * sizeof(tags[0])); /* realloc tags to save space */
|
||||
/* realloc tags to save space */
|
||||
tags = xrealloc(tags, tagindex * sizeof(tags[0]));
|
||||
*num_tags = tagindex;
|
||||
return tags; /* All done, leave the file at the start of the gzipped cpio archive */
|
||||
/* All done, leave the file at the start of the gzipped cpio archive */
|
||||
return tags;
|
||||
}
|
||||
|
||||
static int bsearch_rpmtag(const void *key, const void *item)
|
||||
@ -324,10 +286,13 @@ static char *rpm_getstr(int tag, int itemindex)
|
||||
found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
|
||||
if (!found || itemindex >= found[0]->count)
|
||||
return NULL;
|
||||
if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
|
||||
if (found[0]->type == RPM_STRING_TYPE
|
||||
|| found[0]->type == RPM_I18NSTRING_TYPE
|
||||
|| found[0]->type == RPM_STRING_ARRAY_TYPE
|
||||
) {
|
||||
int n;
|
||||
char *tmpstr = (char *) map + found[0]->offset;
|
||||
for (n=0; n < itemindex; n++)
|
||||
for (n = 0; n < itemindex; n++)
|
||||
tmpstr = tmpstr + strlen(tmpstr) + 1;
|
||||
return tmpstr;
|
||||
}
|
||||
|
38
archival/rpm.h
Normal file
38
archival/rpm.h
Normal file
@ -0,0 +1,38 @@
|
||||
/* vi: set sw=4 ts=4: */
|
||||
/*
|
||||
* RPM structs and consts
|
||||
*
|
||||
* Copyright (C) 2001 by Laurence Anderson
|
||||
*
|
||||
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
||||
*/
|
||||
|
||||
/* RPM file starts with this struct: */
|
||||
struct rpm_lead {
|
||||
uint32_t magic;
|
||||
uint8_t major, minor;
|
||||
uint16_t type;
|
||||
uint16_t archnum;
|
||||
char name[66];
|
||||
uint16_t osnum;
|
||||
uint16_t signature_type;
|
||||
char reserved[16];
|
||||
};
|
||||
struct BUG_rpm_lead {
|
||||
char bug[sizeof(struct rpm_lead) == 96 ? 1 : -1];
|
||||
};
|
||||
#define RPM_LEAD_MAGIC 0xedabeedb
|
||||
#define RPM_LEAD_MAGIC_STR "\355\253\356\333"
|
||||
|
||||
/* Then follows the header: */
|
||||
struct rpm_header {
|
||||
uint32_t magic_and_ver; /* 3 byte magic: 0x8e 0xad 0xe8; 1 byte version: 0x01 */
|
||||
uint32_t reserved; /* 4 bytes reserved */
|
||||
uint32_t entries; /* Number of entries in header (4 bytes) */
|
||||
uint32_t size; /* Size of store (4 bytes) */
|
||||
};
|
||||
struct BUG_rpm_header {
|
||||
char bug[sizeof(struct rpm_header) == 16 ? 1 : -1];
|
||||
};
|
||||
#define RPM_HEADER_MAGICnVER 0x8eade801
|
||||
#define RPM_HEADER_MAGIC_STR "\216\255\350"
|
@ -8,30 +8,7 @@
|
||||
*/
|
||||
#include "libbb.h"
|
||||
#include "unarchive.h"
|
||||
|
||||
#define RPM_MAGIC 0xedabeedb
|
||||
#define RPM_MAGIC_STR "\355\253\356\333"
|
||||
|
||||
struct rpm_lead {
|
||||
uint32_t magic;
|
||||
uint8_t major, minor;
|
||||
uint16_t type;
|
||||
uint16_t archnum;
|
||||
char name[66];
|
||||
uint16_t osnum;
|
||||
uint16_t signature_type;
|
||||
char reserved[16];
|
||||
};
|
||||
|
||||
#define RPM_HEADER_MAGICnVER 0x8eade801
|
||||
#define RPM_HEADER_MAGIC_STR "\216\255\350"
|
||||
|
||||
struct rpm_header {
|
||||
uint32_t magic_and_ver; /* 3 byte magic: 0x8e 0xad 0xe8; 1 byte version */
|
||||
uint32_t reserved; /* 4 bytes reserved */
|
||||
uint32_t entries; /* Number of entries in header (4 bytes) */
|
||||
uint32_t size; /* Size of store (4 bytes) */
|
||||
};
|
||||
#include "rpm.h"
|
||||
|
||||
enum { rpm_fd = STDIN_FILENO };
|
||||
|
||||
@ -65,8 +42,6 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
struct rpm_lead lead;
|
||||
unsigned pos;
|
||||
unsigned char magic[2];
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*unpack)(int src_fd, int dst_fd);
|
||||
|
||||
if (argv[1]) {
|
||||
xmove_fd(xopen(argv[1], O_RDONLY), rpm_fd);
|
||||
@ -74,33 +49,45 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
xread(rpm_fd, &lead, sizeof(lead));
|
||||
|
||||
/* Just check the magic, the rest is irrelevant */
|
||||
if (lead.magic != htonl(RPM_MAGIC)) {
|
||||
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, (8 - pos) & 7);
|
||||
seek_by_jump(rpm_fd, (-(int)pos) & 7);
|
||||
|
||||
/* Skip the main header */
|
||||
skip_header();
|
||||
|
||||
xread(rpm_fd, &magic, 2);
|
||||
unpack = unpack_gz_stream;
|
||||
if (magic[0] != 0x1f || magic[1] != 0x8b) {
|
||||
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
|| magic[0] != 'B' || magic[1] != 'Z'
|
||||
) {
|
||||
bb_error_msg_and_die("invalid gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
" magic");
|
||||
}
|
||||
unpack = unpack_bz2_stream;
|
||||
}
|
||||
|
||||
if (unpack(rpm_fd, STDOUT_FILENO) < 0) {
|
||||
#if 0
|
||||
/* This works, but doesn't report uncompress errors (they happen in child) */
|
||||
setup_unzip_on_fd(rpm_fd /*fail_if_not_detected: 1*/);
|
||||
if (bb_copyfd_eof(rpm_fd, STDOUT_FILENO) < 0)
|
||||
bb_error_msg_and_die("error unpacking");
|
||||
#else
|
||||
/* BLOAT */
|
||||
{
|
||||
unsigned char magic[2];
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*unpack)(int src_fd, int dst_fd);
|
||||
|
||||
xread(rpm_fd, &magic, 2);
|
||||
unpack = unpack_gz_stream;
|
||||
if (magic[0] != 0x1f || magic[1] != 0x8b) {
|
||||
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
|| magic[0] != 'B' || magic[1] != 'Z'
|
||||
) {
|
||||
bb_error_msg_and_die("invalid gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
" magic");
|
||||
}
|
||||
unpack = unpack_bz2_stream;
|
||||
}
|
||||
|
||||
if (unpack(rpm_fd, STDOUT_FILENO) < 0)
|
||||
bb_error_msg_and_die("error unpacking");
|
||||
}
|
||||
#endif
|
||||
|
||||
if (ENABLE_FEATURE_CLEAN_UP) {
|
||||
close(rpm_fd);
|
||||
|
@ -651,6 +651,15 @@ extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC;
|
||||
extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
||||
/* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */
|
||||
extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
||||
/* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
|
||||
#if ENABLE_FEATURE_SEAMLESS_LZMA \
|
||||
|| ENABLE_FEATURE_SEAMLESS_BZ2 \
|
||||
|| ENABLE_FEATURE_SEAMLESS_GZ \
|
||||
/* || ENABLE_FEATURE_SEAMLESS_Z */
|
||||
extern int setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC;
|
||||
#else
|
||||
# define setup_unzip_on_fd(...) ((void)0)
|
||||
#endif
|
||||
/* Autodetects .gz etc */
|
||||
extern int open_zipped(const char *fname) FAST_FUNC;
|
||||
extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
||||
|
97
libbb/read.c
97
libbb/read.c
@ -6,7 +6,6 @@
|
||||
*
|
||||
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
||||
*/
|
||||
|
||||
#include "libbb.h"
|
||||
|
||||
#define ZIPPED (ENABLE_FEATURE_SEAMLESS_LZMA \
|
||||
@ -16,7 +15,7 @@
|
||||
)
|
||||
|
||||
#if ZIPPED
|
||||
#include "unarchive.h"
|
||||
# include "unarchive.h"
|
||||
#endif
|
||||
|
||||
ssize_t FAST_FUNC safe_read(int fd, void *buf, size_t count)
|
||||
@ -306,14 +305,11 @@ void* FAST_FUNC xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p)
|
||||
return buf;
|
||||
}
|
||||
|
||||
int FAST_FUNC open_zipped(const char *fname)
|
||||
#if ZIPPED
|
||||
int FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
|
||||
{
|
||||
#if !ZIPPED
|
||||
return open(fname, O_RDONLY);
|
||||
#else
|
||||
const int fail_if_not_detected = 1;
|
||||
unsigned char magic[2];
|
||||
char *sfx;
|
||||
int fd;
|
||||
#if BB_MMU
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*xformer)(int src_fd, int dst_fd);
|
||||
enum { xformer_prog = 0 };
|
||||
@ -322,6 +318,56 @@ int FAST_FUNC open_zipped(const char *fname)
|
||||
const char *xformer_prog;
|
||||
#endif
|
||||
|
||||
/* .gz and .bz2 both have 2-byte signature, and their
|
||||
* unpack_XXX_stream wants this header skipped. */
|
||||
xread(fd, &magic, 2);
|
||||
#if ENABLE_FEATURE_SEAMLESS_GZ
|
||||
# if BB_MMU
|
||||
xformer = unpack_gz_stream;
|
||||
# else
|
||||
xformer_prog = "gunzip";
|
||||
# endif
|
||||
#endif
|
||||
if (!ENABLE_FEATURE_SEAMLESS_GZ
|
||||
|| magic[0] != 0x1f || magic[1] != 0x8b
|
||||
) {
|
||||
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
|| magic[0] != 'B' || magic[1] != 'Z'
|
||||
) {
|
||||
if (fail_if_not_detected)
|
||||
bb_error_msg_and_die("no gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
" magic");
|
||||
xlseek(fd, -2, SEEK_CUR);
|
||||
return fd;
|
||||
}
|
||||
#if BB_MMU
|
||||
xformer = unpack_bz2_stream;
|
||||
#else
|
||||
xformer_prog = "bunzip2";
|
||||
#endif
|
||||
} else {
|
||||
#if !BB_MMU
|
||||
/* NOMMU version of open_transformer execs
|
||||
* an external unzipper that wants
|
||||
* file position at the start of the file */
|
||||
xlseek(fd, -2, SEEK_CUR);
|
||||
#endif
|
||||
}
|
||||
open_transformer(fd, xformer, xformer_prog);
|
||||
|
||||
return fd;
|
||||
}
|
||||
#endif /* ZIPPED */
|
||||
|
||||
int FAST_FUNC open_zipped(const char *fname)
|
||||
{
|
||||
#if !ZIPPED
|
||||
return open(fname, O_RDONLY);
|
||||
#else
|
||||
char *sfx;
|
||||
int fd;
|
||||
|
||||
fd = open(fname, O_RDONLY);
|
||||
if (fd < 0)
|
||||
return fd;
|
||||
@ -335,40 +381,7 @@ int FAST_FUNC open_zipped(const char *fname)
|
||||
if ((ENABLE_FEATURE_SEAMLESS_GZ && strcmp(sfx, ".gz") == 0)
|
||||
|| (ENABLE_FEATURE_SEAMLESS_BZ2 && strcmp(sfx, ".bz2") == 0)
|
||||
) {
|
||||
/* .gz and .bz2 both have 2-byte signature, and their
|
||||
* unpack_XXX_stream wants this header skipped. */
|
||||
xread(fd, &magic, 2);
|
||||
#if ENABLE_FEATURE_SEAMLESS_GZ
|
||||
#if BB_MMU
|
||||
xformer = unpack_gz_stream;
|
||||
#else
|
||||
xformer_prog = "gunzip";
|
||||
#endif
|
||||
#endif
|
||||
if (!ENABLE_FEATURE_SEAMLESS_GZ
|
||||
|| magic[0] != 0x1f || magic[1] != 0x8b
|
||||
) {
|
||||
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
|| magic[0] != 'B' || magic[1] != 'Z'
|
||||
) {
|
||||
bb_error_msg_and_die("no gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
" magic");
|
||||
}
|
||||
#if BB_MMU
|
||||
xformer = unpack_bz2_stream;
|
||||
#else
|
||||
xformer_prog = "bunzip2";
|
||||
#endif
|
||||
} else {
|
||||
#if !BB_MMU
|
||||
/* NOMMU version of open_transformer execs
|
||||
* an external unzipper that wants
|
||||
* file position at the start of the file */
|
||||
xlseek(fd, 0, SEEK_SET);
|
||||
#endif
|
||||
}
|
||||
open_transformer(fd, xformer, xformer_prog);
|
||||
setup_unzip_on_fd(fd /*, fail_if_not_detected: 1*/);
|
||||
}
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user