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/* pkg_extract.c - the itsy package management system
Carl D. Worth
Copyright (C) 2001 University of Southern California
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, 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
General Public License for more details.
*/
#include "opkg.h"
#include <errno.h>
#include "pkg_extract.h"
#include "libbb/libbb.h"
#include "file_util.h"
#include "sprintf_alloc.h"
/* assuage libb functions */
const char *applet_name = "opkg";
int pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
{
char *buffer = deb_extract(pkg->local_filename, stderr,
extract_control_tar_gz
| extract_one_to_buffer,
NULL, "./control");
if (buffer == NULL) {
return EINVAL;
}
/* XXX: QUESTION: Is there a way to do this directly with deb_extract now? */
fputs(buffer, stream);
free(buffer);
return 0;
}
int pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
{
return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
}
int pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg,
const char *dir,
const char *prefix)
{
char *dir_with_prefix;
sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
deb_extract(pkg->local_filename, stderr,
extract_control_tar_gz
| extract_all_to_fs| extract_preserve_date
| extract_unconditional,
dir_with_prefix, NULL);
free(dir_with_prefix);
/* XXX: BUG: how do we know if deb_extract worked or not? This is
a defect in the current deb_extract from what I can tell.
Once this is fixed, audit all calls to deb_extract. */
return 0;
}
int pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
{
deb_extract(pkg->local_filename, stderr,
extract_data_tar_gz
| extract_all_to_fs| extract_preserve_date
| extract_unconditional,
dir, NULL);
/* BUG: How do we know if deb_extract worked or not? This is a
defect in the current deb_extract from what I can tell. */
return 0;
}
int pkg_extract_data_file_names_to_file(pkg_t *pkg, const char *file_name)
{
int err=0;
char *line, *data_file;
FILE *file;
FILE *tmp;
file = fopen(file_name, "w");
if (file == NULL) {
fprintf(stderr, "%s: ERROR: Failed to open %s for writing.\n",
__FUNCTION__, file_name);
return EINVAL;
}
tmp = tmpfile();
if (pkg->installed_files) {
str_list_elt_t *elt;
for (elt = pkg->installed_files->head; elt; elt = elt->next) {
fprintf(file, "%s\n", elt->data);
}
} else {
err = pkg_extract_data_file_names_to_stream(pkg, tmp);
if (err) {
fclose(file);
fclose(tmp);
return err;
}
/* Fixup data file names by removing the initial '.' */
rewind(tmp);
while (1) {
line = file_read_line_alloc(tmp);
if (line == NULL) {
break;
}
data_file = line;
if (*data_file == '.') {
data_file++;
}
if (*data_file != '/') {
fputs("/", file);
}
/* I have no idea why, but this is what dpkg does */
if (strcmp(data_file, "/\n") == 0) {
fputs("/.\n", file);
} else {
fputs(data_file, file);
}
}
}
fclose(tmp);
fclose(file);
return err;
}
int pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *file)
{
/* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
data file names with a '.' as the first character. I've taught
opkg how to cope with the presence or absence of the '.', but
this may trip up dpkg.
For all I know, this could actually be a bug in opkg-build. So,
I'll have to try installing some .debs and comparing the *.list
files.
If we wanted to, we could workaround the deb_extract behavior
right here, by writing to a tmpfile, then munging things as we
wrote to the actual stream. */
deb_extract(pkg->local_filename, file,
extract_quiet | extract_data_tar_gz | extract_list,
NULL, NULL);
/* BUG: How do we know if deb_extract worked or not? This is a
defect in the current deb_extract from what I can tell. */
return 0;
}
|
