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-rw-r--r--archival/gunzip.c3
-rw-r--r--archival/libunarchive/Makefile.in1
-rw-r--r--archival/libunarchive/archive_xread.c2
-rw-r--r--archival/libunarchive/data_align.c1
-rw-r--r--archival/libunarchive/decompress_bunzip2.c4
-rw-r--r--archival/libunarchive/decompress_unzip.c140
-rw-r--r--archival/libunarchive/filter_accept_list_reassign.c2
-rw-r--r--archival/libunarchive/get_header_tar_bz2.c42
-rw-r--r--archival/libunarchive/get_header_tar_gz.c17
-rw-r--r--archival/libunarchive/init_handle.c1
-rw-r--r--archival/libunarchive/open_transformer.c50
-rw-r--r--archival/libunarchive/unzip.c140
-rw-r--r--archival/rpm.c7
-rw-r--r--archival/rpm2cpio.c3
-rw-r--r--archival/unzip.c9
-rw-r--r--include/unarchive.h18
16 files changed, 156 insertions, 284 deletions
diff --git a/archival/gunzip.c b/archival/gunzip.c
index 7d382b895..f229ae524 100644
--- a/archival/gunzip.c
+++ b/archival/gunzip.c
@@ -179,11 +179,10 @@ extern int gunzip_main(int argc, char **argv)
#endif
if (magic2 == 0x8b) {
check_header_gzip(src_fd);
- status = inflate(src_fd, dst_fd);
+ status = inflate_gunzip(src_fd, dst_fd);
if (status != 0) {
bb_error_msg_and_die("Error inflating");
}
- check_trailer_gzip(src_fd);
} else {
bb_error_msg_and_die("Invalid magic");
}
diff --git a/archival/libunarchive/Makefile.in b/archival/libunarchive/Makefile.in
index 3d7bdef6b..d449c193e 100644
--- a/archival/libunarchive/Makefile.in
+++ b/archival/libunarchive/Makefile.in
@@ -49,6 +49,7 @@ LIBUNARCHIVE-y:= \
\
data_align.o \
find_list_entry.o \
+ open_transformer.o \
init_handle.o
GUNZIP_FILES:= check_header_gzip.o unzip.o
diff --git a/archival/libunarchive/archive_xread.c b/archival/libunarchive/archive_xread.c
index d63d0d5a2..59b4d77a8 100644
--- a/archival/libunarchive/archive_xread.c
+++ b/archival/libunarchive/archive_xread.c
@@ -24,7 +24,7 @@ extern ssize_t archive_xread(const archive_handle_t *archive_handle, unsigned ch
{
ssize_t size;
- size = archive_handle->read(archive_handle->src_fd, buf, count);
+ size = bb_full_read(archive_handle->src_fd, buf, count);
if (size < 0) {
bb_perror_msg_and_die("Read error");
}
diff --git a/archival/libunarchive/data_align.c b/archival/libunarchive/data_align.c
index 037242f25..1d433957d 100644
--- a/archival/libunarchive/data_align.c
+++ b/archival/libunarchive/data_align.c
@@ -27,7 +27,6 @@ extern void data_align(archive_handle_t *archive_handle, const unsigned short bo
const unsigned short skip_amount = (boundary - (archive_handle->offset % boundary)) % boundary;
archive_handle->seek(archive_handle, skip_amount);
-
archive_handle->offset += skip_amount;
return;
diff --git a/archival/libunarchive/decompress_bunzip2.c b/archival/libunarchive/decompress_bunzip2.c
index 83232fbe8..3e6138c95 100644
--- a/archival/libunarchive/decompress_bunzip2.c
+++ b/archival/libunarchive/decompress_bunzip2.c
@@ -424,7 +424,7 @@ got_huff_bits:
are ignored, data is written to out_fd and return is RETVAL_OK or error.
*/
-extern int read_bunzip(bunzip_data *bd, char *outbuf, int len)
+static int read_bunzip(bunzip_data *bd, char *outbuf, int len)
{
const unsigned int *dbuf;
int pos,current,previous,gotcount;
@@ -511,7 +511,7 @@ decode_next_byte:
/* Allocate the structure, read file header. If in_fd==-1, inbuf must contain
a complete bunzip file (len bytes long). If in_fd!=-1, inbuf and len are
ignored, and data is read from file handle into temporary buffer. */
-extern int start_bunzip(bunzip_data **bdp, int in_fd, char *inbuf, int len)
+static int start_bunzip(bunzip_data **bdp, int in_fd, char *inbuf, int len)
{
bunzip_data *bd;
unsigned int i,j,c;
diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c
index 2b16db3c3..29929c282 100644
--- a/archival/libunarchive/decompress_unzip.c
+++ b/archival/libunarchive/decompress_unzip.c
@@ -103,7 +103,7 @@ static unsigned int gunzip_bb; /* bit buffer */
static unsigned char gunzip_bk; /* bits in bit buffer */
/* These control the size of the bytebuffer */
-#define BYTEBUFFER_MAX 0x8000
+static unsigned int bytebuffer_max = 0x8000;
static unsigned char *bytebuffer = NULL;
static unsigned int bytebuffer_offset = 0;
static unsigned int bytebuffer_size = 0;
@@ -144,21 +144,16 @@ static const unsigned char border[] = {
16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
};
-static void fill_bytebuffer(void)
-{
- if (bytebuffer_offset >= bytebuffer_size) {
- /* Leave the first 4 bytes empty so we can always unwind the bitbuffer
- * to the front of the bytebuffer, leave 4 bytes free at end of tail
- * so we can easily top up buffer in check_trailer_gzip() */
- bytebuffer_size = 4 + bb_xread(gunzip_src_fd, &bytebuffer[4], BYTEBUFFER_MAX - 8);
- bytebuffer_offset = 4;
- }
-}
-
static unsigned int fill_bitbuffer(unsigned int bitbuffer, unsigned int *current, const unsigned int required)
{
while (*current < required) {
- fill_bytebuffer();
+ if (bytebuffer_offset >= bytebuffer_size) {
+ /* Leave the first 4 bytes empty so we can always unwind the bitbuffer
+ * to the front of the bytebuffer, leave 4 bytes free at end of tail
+ * so we can easily top up buffer in check_trailer_gzip() */
+ bytebuffer_size = 4 + bb_xread(gunzip_src_fd, &bytebuffer[4], bytebuffer_max - 8);
+ bytebuffer_offset = 4;
+ }
bitbuffer |= ((unsigned int) bytebuffer[bytebuffer_offset]) << *current;
bytebuffer_offset++;
*current += 8;
@@ -861,9 +856,9 @@ static void calculate_gunzip_crc(void)
static int inflate_get_next_window(void)
{
- static int needAnotherBlock = 1;
static int method = -1; // Method == -1 for stored, -2 for codes
static int e = 0;
+ static int needAnotherBlock = 1;
gunzip_outbuf_count = 0;
@@ -873,6 +868,8 @@ static int inflate_get_next_window(void)
if (needAnotherBlock) {
if(e) {
calculate_gunzip_crc();
+ e = 0;
+ needAnotherBlock = 1;
return 0;
} // Last block
method = inflate_block(&e);
@@ -895,54 +892,25 @@ static int inflate_get_next_window(void)
/* Doesnt get here */
}
-/*
- * User functions
- *
- * read_gz, GZ_gzReadOpen, GZ_gzReadClose, inflate
- */
-
-extern ssize_t read_gz(int fd, void *buf, size_t count)
+/* Initialise bytebuffer, be carefull not to overfill the buffer */
+extern void inflate_init(unsigned int bufsize)
{
- static int morebytes = 0, finished = 0;
-
- if (morebytes) {
- int bytesRead = morebytes > count ? count : morebytes;
- memcpy(buf, gunzip_window + (gunzip_outbuf_count - morebytes), bytesRead);
- morebytes -= bytesRead;
- return bytesRead;
- } else if (finished) {
- return 0;
- } else if (count >= 0x8000) { // We can decompress direcly to the buffer, 32k at a time
- // Could decompress to larger buffer, but it must be a power of 2, and calculating that is probably more expensive than the benefit
- unsigned char *old_gunzip_window = gunzip_window; // Save old window
- gunzip_window = buf;
- if (inflate_get_next_window() == 0) finished = 1;
- gunzip_window = old_gunzip_window; // Restore old window
- return gunzip_outbuf_count;
- } else { // Oh well, need to split up the gunzip_window
- int bytesRead;
- if (inflate_get_next_window() == 0) finished = 1;
- morebytes = gunzip_outbuf_count;
- bytesRead = morebytes > count ? count : morebytes;
- memcpy(buf, gunzip_window, bytesRead);
- morebytes -= bytesRead;
- return bytesRead;
- }
-
+ /* Set the bytebuffer size, default is same as gunzip_wsize */
+ bytebuffer_max = bufsize + 8;
+ bytebuffer_offset = 4;
+ bytebuffer_size = 0;
}
-extern void GZ_gzReadOpen(int fd, void *unused, int nUnused)
+extern int inflate_unzip(int in, int out)
{
+ ssize_t nwrote;
typedef void (*sig_type) (int);
/* Allocate all global buffers (for DYN_ALLOC option) */
gunzip_window = xmalloc(gunzip_wsize);
gunzip_outbuf_count = 0;
gunzip_bytes_out = 0;
- gunzip_src_fd = fd;
-
- /* Input buffer */
- bytebuffer = xmalloc(BYTEBUFFER_MAX);
+ gunzip_src_fd = in;
/* initialize gunzip_window, bit buffer */
gunzip_bk = 0;
@@ -950,10 +918,20 @@ extern void GZ_gzReadOpen(int fd, void *unused, int nUnused)
/* Create the crc table */
make_gunzip_crc_table();
-}
-extern void GZ_gzReadClose(void)
-{
+ /* Allocate space for buffer */
+ bytebuffer = xmalloc(bytebuffer_max);
+
+ while(1) {
+ int ret = inflate_get_next_window();
+ nwrote = bb_full_write(out, gunzip_window, gunzip_outbuf_count);
+ if (nwrote == -1) {
+ bb_perror_msg("write");
+ return -1;
+ }
+ if (ret == 0) break;
+ }
+
/* Cleanup */
free(gunzip_window);
free(gunzip_crc_table);
@@ -967,57 +945,20 @@ extern void GZ_gzReadClose(void)
gunzip_bb >>= 8;
gunzip_bk -= 8;
}
-}
-
-/*extern int inflate(int in, int out) // Useful for testing read_gz
-{
- char buf[8192];
- ssize_t nread, nwrote;
-
- GZ_gzReadOpen(in, 0, 0);
- while(1) { // Robbed from bb_copyfd.c
- nread = read_gz(in, buf, sizeof(buf));
- if (nread == 0) break; // no data to write
- else if (nread == -1) {
- bb_perror_msg("read");
- return -1;
- }
- nwrote = bb_full_write(out, buf, nread);
- if (nwrote == -1) {
- bb_perror_msg("write");
- return -1;
- }
- }
- GZ_gzReadClose();
- return 0;
-}*/
-
-extern int inflate(int in, int out)
-{
- ssize_t nwrote;
- GZ_gzReadOpen(in, 0, 0);
- while(1) {
- int ret = inflate_get_next_window();
- nwrote = bb_full_write(out, gunzip_window, gunzip_outbuf_count);
- if (nwrote == -1) {
- bb_perror_msg("write");
- return -1;
- }
- if (ret == 0) break;
- }
- GZ_gzReadClose();
return 0;
}
-extern void check_trailer_gzip(int src_fd)
+extern int inflate_gunzip(int in, int out)
{
unsigned int stored_crc = 0;
unsigned char count;
+ inflate_unzip(in, out);
+
/* top up the input buffer with the rest of the trailer */
count = bytebuffer_size - bytebuffer_offset;
if (count < 8) {
- bb_xread_all(src_fd, &bytebuffer[bytebuffer_size], 8 - count);
+ bb_xread_all(in, &bytebuffer[bytebuffer_size], 8 - count);
bytebuffer_size += 8 - count;
}
for (count = 0; count != 4; count++) {
@@ -1027,14 +968,15 @@ extern void check_trailer_gzip(int src_fd)
/* Validate decompression - crc */
if (stored_crc != (gunzip_crc ^ 0xffffffffL)) {
- bb_error_msg_and_die("crc error");
+ bb_error_msg("crc error");
}
/* Validate decompression - size */
if (gunzip_bytes_out !=
(bytebuffer[bytebuffer_offset] | (bytebuffer[bytebuffer_offset+1] << 8) |
(bytebuffer[bytebuffer_offset+2] << 16) | (bytebuffer[bytebuffer_offset+3] << 24))) {
- bb_error_msg_and_die("Incorrect length, but crc is correct");
+ bb_error_msg("Incorrect length");
}
-
+
+ return 0;
}
diff --git a/archival/libunarchive/filter_accept_list_reassign.c b/archival/libunarchive/filter_accept_list_reassign.c
index f34a23c33..1e9da0f2b 100644
--- a/archival/libunarchive/filter_accept_list_reassign.c
+++ b/archival/libunarchive/filter_accept_list_reassign.c
@@ -40,14 +40,12 @@ extern char filter_accept_list_reassign(archive_handle_t *archive_handle)
/* Modify the subarchive handler based on the extension */
#ifdef CONFIG_FEATURE_DEB_TAR_GZ
if (strcmp(name_ptr, ".gz") == 0) {
- archive_handle->sub_archive->read = read;
archive_handle->action_data_subarchive = get_header_tar_gz;
return(EXIT_SUCCESS);
}
#endif
#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
if (strcmp(name_ptr, ".bz2") == 0) {
- archive_handle->sub_archive->read = read;
archive_handle->action_data_subarchive = get_header_tar_bz2;
return(EXIT_SUCCESS);
}
diff --git a/archival/libunarchive/get_header_tar_bz2.c b/archival/libunarchive/get_header_tar_bz2.c
index 6354648fc..d49d6b96a 100644
--- a/archival/libunarchive/get_header_tar_bz2.c
+++ b/archival/libunarchive/get_header_tar_bz2.c
@@ -26,53 +26,13 @@
extern char get_header_tar_bz2(archive_handle_t *archive_handle)
{
- int fd_pipe[2];
- int pid;
-
/* Cant lseek over pipe's */
- archive_handle->read = safe_read;
archive_handle->seek = seek_by_char;
- if (pipe(fd_pipe) != 0) {
- bb_error_msg_and_die("Can't create pipe");
- }
-
- pid = fork();
- if (pid == -1) {
- bb_error_msg_and_die("Fork failed\n");
- }
-
- if (pid == 0) {
- /* child process */
- int status;
-
- close(fd_pipe[0]); /* We don't wan't to read from the pipe */
- uncompressStream(archive_handle->src_fd, fd_pipe[1]);
- close(fd_pipe[1]); /* Send EOF */
- exit(status);
- /* notreached */
- }
- /* parent process */
- close(fd_pipe[1]); /* Don't want to write down the pipe */
- close(archive_handle->src_fd);
-
- archive_handle->src_fd = fd_pipe[0];
-
+ archive_handle->src_fd = open_transformer(archive_handle->src_fd, uncompressStream);
archive_handle->offset = 0;
while (get_header_tar(archive_handle) == EXIT_SUCCESS);
- close(fd_pipe[0]);
-#if 0
- if (kill(pid, SIGTERM) == -1) {
- bb_error_msg_and_die("Couldnt kill gunzip process");
- }
-#endif
-
- /* I dont think this is needed */
- if (waitpid(pid, NULL, 0) == -1) {
- bb_error_msg("Couldnt wait ?");
- }
-
/* Can only do one file at a time */
return(EXIT_FAILURE);
}
diff --git a/archival/libunarchive/get_header_tar_gz.c b/archival/libunarchive/get_header_tar_gz.c
index 64d08f7a7..9c708a951 100644
--- a/archival/libunarchive/get_header_tar_gz.c
+++ b/archival/libunarchive/get_header_tar_gz.c
@@ -23,6 +23,9 @@ extern char get_header_tar_gz(archive_handle_t *archive_handle)
{
unsigned char magic[2];
+ /* Cant lseek over pipe's */
+ archive_handle->seek = seek_by_char;
+
archive_xread_all(archive_handle, &magic, 2);
if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
bb_error_msg_and_die("Invalid gzip magic");
@@ -30,20 +33,10 @@ extern char get_header_tar_gz(archive_handle_t *archive_handle)
check_header_gzip(archive_handle->src_fd);
- GZ_gzReadOpen(archive_handle->src_fd, 0, 0);
-
- archive_handle->read = read_gz;
- archive_handle->seek = seek_by_char;
-
+ archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
archive_handle->offset = 0;
while (get_header_tar(archive_handle) == EXIT_SUCCESS);
- /* Cleanup */
- GZ_gzReadClose();
-
- check_trailer_gzip(archive_handle->src_fd);
-
- /* Can only do one tar.gz per archive */
+ /* Can only do one file at a time */
return(EXIT_FAILURE);
}
-
diff --git a/archival/libunarchive/init_handle.c b/archival/libunarchive/init_handle.c
index 2659aa3eb..3cee84f67 100644
--- a/archival/libunarchive/init_handle.c
+++ b/archival/libunarchive/init_handle.c
@@ -30,7 +30,6 @@ archive_handle_t *init_handle(void)
archive_handle->action_header = header_skip;
archive_handle->action_data = data_skip;
archive_handle->filter = filter_accept_all;
- archive_handle->read = bb_full_read;
archive_handle->seek = seek_by_jump;
return(archive_handle);
diff --git a/archival/libunarchive/open_transformer.c b/archival/libunarchive/open_transformer.c
new file mode 100644
index 000000000..c1007f982
--- /dev/null
+++ b/archival/libunarchive/open_transformer.c
@@ -0,0 +1,50 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "libbb.h"
+
+/* transformer(), more than meets the eye */
+extern int open_transformer(int src_fd, int (*transformer)(int src_fd, int dst_fd))
+{
+ int fd_pipe[2];
+ int pid;
+
+ if (pipe(fd_pipe) != 0) {
+ bb_perror_msg_and_die("Can't create pipe");
+ }
+
+ pid = fork();
+ if (pid == -1) {
+ bb_perror_msg_and_die("Fork failed");
+ }
+
+ if (pid == 0) {
+ /* child process */
+ close(fd_pipe[0]); /* We don't wan't to read from the pipe */
+ transformer(src_fd, fd_pipe[1]);
+ close(fd_pipe[1]); /* Send EOF */
+ exit(0);
+ /* notreached */
+ }
+ /* parent process */
+ close(fd_pipe[1]); /* Don't want to write down the pipe */
+ close(src_fd);
+
+ return(fd_pipe[0]);
+}
diff --git a/archival/libunarchive/unzip.c b/archival/libunarchive/unzip.c
index 2b16db3c3..29929c282 100644
--- a/archival/libunarchive/unzip.c
+++ b/archival/libunarchive/unzip.c
@@ -103,7 +103,7 @@ static unsigned int gunzip_bb; /* bit buffer */
static unsigned char gunzip_bk; /* bits in bit buffer */
/* These control the size of the bytebuffer */
-#define BYTEBUFFER_MAX 0x8000
+static unsigned int bytebuffer_max = 0x8000;
static unsigned char *bytebuffer = NULL;
static unsigned int bytebuffer_offset = 0;
static unsigned int bytebuffer_size = 0;
@@ -144,21 +144,16 @@ static const unsigned char border[] = {
16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
};
-static void fill_bytebuffer(void)
-{
- if (bytebuffer_offset >= bytebuffer_size) {
- /* Leave the first 4 bytes empty so we can always unwind the bitbuffer
- * to the front of the bytebuffer, leave 4 bytes free at end of tail
- * so we can easily top up buffer in check_trailer_gzip() */
- bytebuffer_size = 4 + bb_xread(gunzip_src_fd, &bytebuffer[4], BYTEBUFFER_MAX - 8);
- bytebuffer_offset = 4;
- }
-}
-
static unsigned int fill_bitbuffer(unsigned int bitbuffer, unsigned int *current, const unsigned int required)
{
while (*current < required) {
- fill_bytebuffer();
+ if (bytebuffer_offset >= bytebuffer_size) {
+ /* Leave the first 4 bytes empty so we can always unwind the bitbuffer
+ * to the front of the bytebuffer, leave 4 bytes free at end of tail
+ * so we can easily top up buffer in check_trailer_gzip() */
+ bytebuffer_size = 4 + bb_xread(gunzip_src_fd, &bytebuffer[4], bytebuffer_max - 8);
+ bytebuffer_offset = 4;
+ }
bitbuffer |= ((unsigned int) bytebuffer[bytebuffer_offset]) << *current;
bytebuffer_offset++;
*current += 8;
@@ -861,9 +856,9 @@ static void calculate_gunzip_crc(void)
static int inflate_get_next_window(void)
{
- static int needAnotherBlock = 1;
static int method = -1; // Method == -1 for stored, -2 for codes
static int e = 0;
+ static int needAnotherBlock = 1;
gunzip_outbuf_count = 0;
@@ -873,6 +868,8 @@ static int inflate_get_next_window(void)
if (needAnotherBlock) {
if(e) {
calculate_gunzip_crc();
+ e = 0;
+ needAnotherBlock = 1;
return 0;
} // Last block
method = inflate_block(&e);
@@ -895,54 +892,25 @@ static int inflate_get_next_window(void)
/* Doesnt get here */
}
-/*
- * User functions
- *
- * read_gz, GZ_gzReadOpen, GZ_gzReadClose, inflate
- */
-
-extern ssize_t read_gz(int fd, void *buf, size_t count)
+/* Initialise bytebuffer, be carefull not to overfill the buffer */
+extern void inflate_init(unsigned int bufsize)
{
- static int morebytes = 0, finished = 0;
-
- if (morebytes) {
- int bytesRead = morebytes > count ? count : morebytes;
- memcpy(buf, gunzip_window + (gunzip_outbuf_count - morebytes), bytesRead);
- morebytes -= bytesRead;
- return bytesRead;
- } else if (finished) {
- return 0;
- } else if (count >= 0x8000) { // We can decompress direcly to the buffer, 32k at a time
- // Could decompress to larger buffer, but it must be a power of 2, and calculating that is probably more expensive than the benefit
- unsigned char *old_gunzip_window = gunzip_window; // Save old window
- gunzip_window = buf;
- if (inflate_get_next_window() == 0) finished = 1;
- gunzip_window = old_gunzip_window; // Restore old window
- return gunzip_outbuf_count;
- } else { // Oh well, need to split up the gunzip_window
- int bytesRead;
- if (inflate_get_next_window() == 0) finished = 1;
- morebytes = gunzip_outbuf_count;
- bytesRead = morebytes > count ? count : morebytes;
- memcpy(buf, gunzip_window, bytesRead);
- morebytes -= bytesRead;
- return bytesRead;
- }
-
+ /* Set the bytebuffer size, default is same as gunzip_wsize */
+ bytebuffer_max = bufsize + 8;
+ bytebuffer_offset = 4;
+ bytebuffer_size = 0;
}
-extern void GZ_gzReadOpen(int fd, void *unused, int nUnused)
+extern int inflate_unzip(int in, int out)
{
+ ssize_t nwrote;
typedef void (*sig_type) (int);
/* Allocate all global buffers (for DYN_ALLOC option) */
gunzip_window = xmalloc(gunzip_wsize);
gunzip_outbuf_count = 0;
gunzip_bytes_out = 0;
- gunzip_src_fd = fd;
-
- /* Input buffer */
- bytebuffer = xmalloc(BYTEBUFFER_MAX);
+ gunzip_src_fd = in;
/* initialize gunzip_window, bit buffer */
gunzip_bk = 0;
@@ -950,10 +918,20 @@ extern void GZ_gzReadOpen(int fd, void *unused, int nUnused)
/* Create the crc table */
make_gunzip_crc_table();
-}
-extern void GZ_gzReadClose(void)
-{
+ /* Allocate space for buffer */
+ bytebuffer = xmalloc(bytebuffer_max);
+
+ while(1) {
+ int ret = inflate_get_next_window();
+ nwrote = bb_full_write(out, gunzip_window, gunzip_outbuf_count);
+ if (nwrote == -1) {
+ bb_perror_msg("write");
+ return -1;
+ }
+ if (ret == 0) break;
+ }
+
/* Cleanup */
free(gunzip_window);
free(gunzip_crc_table);
@@ -967,57 +945,20 @@ extern void GZ_gzReadClose(void)
gunzip_bb >>= 8;
gunzip_bk -= 8;
}
-}
-
-/*extern int inflate(int in, int out) // Useful for testing read_gz
-{
- char buf[8192];
- ssize_t nread, nwrote;
-
- GZ_gzReadOpen(in, 0, 0);
- while(1) { // Robbed from bb_copyfd.c
- nread = read_gz(in, buf, sizeof(buf));
- if (nread == 0) break; // no data to write
- else if (nread == -1) {
- bb_perror_msg("read");
- return -1;
- }
- nwrote = bb_full_write(out, buf, nread);
- if (nwrote == -1) {
- bb_perror_msg("write");
- return -1;
- }
- }
- GZ_gzReadClose();
- return 0;
-}*/
-
-extern int inflate(int in, int out)
-{
- ssize_t nwrote;
- GZ_gzReadOpen(in, 0, 0);
- while(1) {
- int ret = inflate_get_next_window();
- nwrote = bb_full_write(out, gunzip_window, gunzip_outbuf_count);
- if (nwrote == -1) {
- bb_perror_msg("write");
- return -1;
- }
- if (ret == 0) break;
- }
- GZ_gzReadClose();
return 0;
}
-extern void check_trailer_gzip(int src_fd)
+extern int inflate_gunzip(int in, int out)
{
unsigned int stored_crc = 0;
unsigned char count;
+ inflate_unzip(in, out);
+
/* top up the input buffer with the rest of the trailer */
count = bytebuffer_size - bytebuffer_offset;
if (count < 8) {
- bb_xread_all(src_fd, &bytebuffer[bytebuffer_size], 8 - count);
+ bb_xread_all(in, &bytebuffer[bytebuffer_size], 8 - count);
bytebuffer_size += 8 - count;
}
for (count = 0; count != 4; count++) {
@@ -1027,14 +968,15 @@ extern void check_trailer_gzip(int src_fd)
/* Validate decompression - crc */
if (stored_crc != (gunzip_crc ^ 0xffffffffL)) {
- bb_error_msg_and_die("crc error");
+ bb_error_msg("crc error");
}
/* Validate decompression - size */
if (gunzip_bytes_out !=
(bytebuffer[bytebuffer_offset] | (bytebuffer[bytebuffer_offset+1] << 8) |
(bytebuffer[bytebuffer_offset+2] << 16) | (bytebuffer[bytebuffer_offset+3] << 24))) {
- bb_error_msg_and_die("Incorrect length, but crc is correct");
+ bb_error_msg("Incorrect length");
}
-
+
+ return 0;
}
diff --git a/archival/rpm.c b/archival/rpm.c
index 5bde53285..e3f20ca35 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -197,7 +197,6 @@ void extract_cpio_gz(int fd) {
/* Initialise */
archive_handle = init_handle();
- archive_handle->read = read_gz;
archive_handle->seek = seek_by_char;
//archive_handle->action_header = header_list;
archive_handle->action_data = data_extract_all;
@@ -213,11 +212,9 @@ void extract_cpio_gz(int fd) {
check_header_gzip(archive_handle->src_fd);
chdir("/"); // Install RPM's to root
- GZ_gzReadOpen(archive_handle->src_fd, 0, 0);
+ archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
+ archive_handle->offset = 0;
while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
- GZ_gzReadClose();
-
- check_trailer_gzip(archive_handle->src_fd);
}
diff --git a/archival/rpm2cpio.c b/archival/rpm2cpio.c
index bb9f69573..47f4e73cd 100644
--- a/archival/rpm2cpio.c
+++ b/archival/rpm2cpio.c
@@ -96,10 +96,9 @@ extern int rpm2cpio_main(int argc, char **argv)
}
check_header_gzip(rpm_fd);
- if (inflate(rpm_fd, fileno(stdout)) != 0) {
+ if (inflate_gunzip(rpm_fd, fileno(stdout)) != 0) {
bb_error_msg("Error inflating");
}
- check_trailer_gzip(rpm_fd);
close(rpm_fd);
diff --git a/archival/unzip.c b/archival/unzip.c
index f2d7f4918..c670073f4 100644
--- a/archival/unzip.c
+++ b/archival/unzip.c
@@ -199,7 +199,8 @@ extern int unzip_main(int argc, char **argv)
archive_handle->action_data(archive_handle);
} else {
dst_fd = bb_xopen(archive_handle->file_header->name, O_WRONLY | O_CREAT);
- inflate(archive_handle->src_fd, dst_fd);
+ inflate_init(zip_header.formated.cmpsize);
+ inflate_unzip(archive_handle->src_fd, dst_fd);
close(dst_fd);
chmod(archive_handle->file_header->name, archive_handle->file_header->mode);
@@ -227,10 +228,8 @@ extern int unzip_main(int argc, char **argv)
/* Data descriptor section */
if (zip_header.formated.flags & 4) {
/* skip over duplicate crc, compressed size and uncompressed size */
- unsigned short i;
- for (i = 0; i != 12; i++) {
- archive_xread_char(archive_handle);
- }
+ unsigned char data_description[12];
+ archive_xread_all(archive_handle, data_description, 12);
archive_handle->offset += 12;
}
}
diff --git a/include/unarchive.h b/include/unarchive.h
index 9f1331338..fa7233743 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -50,9 +50,6 @@ typedef struct archive_handle_s {
/* Count the number of bytes processed */
off_t offset;
- /* Function that reads data: read or read_bz */
- ssize_t (*read)(int fd, void *buf, size_t count);
-
/* Function that skips data: read_by_char or read_by_skip */
void (*seek)(const struct archive_handle_s *archive_handle, const unsigned int amount);
@@ -83,7 +80,6 @@ extern void header_list(const file_header_t *file_header);
extern void header_verbose_list(const file_header_t *file_header);
extern void check_header_gzip(int src_fd);
-extern void check_trailer_gzip(int src_fd);
extern char get_header_ar(archive_handle_t *archive_handle);
extern char get_header_cpio(archive_handle_t *archive_handle);
@@ -103,14 +99,12 @@ extern void data_align(archive_handle_t *archive_handle, const unsigned short bo
extern void archive_copy_file(const archive_handle_t *archive_handle, const int dst_fd);
extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
-extern ssize_t read_bz2(int fd, void *buf, size_t count);
-extern void BZ2_bzReadOpen(int fd, void *unused, int nUnused);
-extern void BZ2_bzReadClose(void);
-extern unsigned char uncompressStream(int src_fd, int dst_fd);
+extern int uncompressStream(int src_fd, int dst_fd);
+extern void inflate_init(unsigned int bufsize);
+extern int inflate_unzip(int in, int out);
+extern int inflate_gunzip(int in, int out);
+
+extern int open_transformer(int src_fd, int (*transformer)(int src_fd, int dst_fd));
-extern ssize_t read_gz(int fd, void *buf, size_t count);
-extern void GZ_gzReadOpen(int fd, void *unused, int nUnused);
-extern void GZ_gzReadClose(void);
-extern int inflate(int in, int out);
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 02:52:53 +0000