/*-
* Copyright (c) 2009-2013 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xbps_api_impl.h"
/*
* Returns true if entry is a configuration file, false otherwise.
*/
int HIDDEN
xbps_entry_is_a_conf_file(xbps_dictionary_t propsd,
const char *entry_pname)
{
xbps_array_t array;
const char *cffile;
assert(xbps_object_type(propsd) == XBPS_TYPE_DICTIONARY);
assert(entry_pname != NULL);
array = xbps_dictionary_get(propsd, "conf_files");
if (xbps_array_count(array) == 0)
return false;
for (unsigned int i = 0; i < xbps_array_count(array); i++) {
xbps_array_get_cstring_nocopy(array, i, &cffile);
if (strcmp(cffile, entry_pname) == 0)
return true;
}
return false;
}
/*
* Returns 1 if entry should be installed, 0 if don't or -1 on error.
*/
int HIDDEN
xbps_entry_install_conf_file(struct xbps_handle *xhp,
xbps_dictionary_t filesd,
struct archive_entry *entry,
const char *entry_pname,
const char *pkgver,
const char *pkgname)
{
xbps_dictionary_t forigd;
xbps_object_t obj, obj2;
xbps_object_iterator_t iter, iter2;
const char *cffile, *sha256_new = NULL;
char *buf, *sha256_cur = NULL, *sha256_orig = NULL;
int rv = 0;
assert(xbps_object_type(filesd) == XBPS_TYPE_DICTIONARY);
assert(entry != NULL);
assert(entry_pname != NULL);
assert(pkgver != NULL);
iter = xbps_array_iter_from_dict(filesd, "conf_files");
if (iter == NULL)
return -1;
/*
* Get original hash for the file from current
* installed package.
*/
xbps_dbg_printf(xhp, "%s: processing conf_file %s\n",
pkgver, entry_pname);
forigd = xbps_pkgdb_get_pkg_metadata(xhp, pkgname);
if (forigd == NULL) {
xbps_dbg_printf(xhp, "%s: conf_file %s not currently "
"installed\n", pkgver, entry_pname);
rv = 1;
goto out;
}
iter2 = xbps_array_iter_from_dict(forigd, "conf_files");
if (iter2 != NULL) {
while ((obj2 = xbps_object_iterator_next(iter2))) {
xbps_dictionary_get_cstring_nocopy(obj2,
"file", &cffile);
buf = xbps_xasprintf(".%s", cffile);
if (strcmp(entry_pname, buf) == 0) {
xbps_dictionary_get_cstring(obj2, "sha256",
&sha256_orig);
free(buf);
break;
}
free(buf);
buf = NULL;
}
xbps_object_iterator_release(iter2);
}
/*
* First case: original hash not found, install new file.
*/
if (sha256_orig == NULL) {
xbps_dbg_printf(xhp, "%s: conf_file %s not installed\n",
pkgver, entry_pname);
rv = 1;
goto out;
}
/*
* Compare original, installed and new hash for current file.
*/
while ((obj = xbps_object_iterator_next(iter))) {
xbps_dictionary_get_cstring_nocopy(obj, "file", &cffile);
buf = xbps_xasprintf(".%s", cffile);
if (strcmp(entry_pname, buf)) {
free(buf);
buf = NULL;
continue;
}
sha256_cur = xbps_file_hash(buf);
free(buf);
xbps_dictionary_get_cstring_nocopy(obj, "sha256", &sha256_new);
if (sha256_cur == NULL) {
if (errno == ENOENT) {
/*
* File not installed, install new one.
*/
xbps_dbg_printf(xhp, "%s: conf_file %s not "
"installed\n", pkgver, entry_pname);
rv = 1;
break;
} else {
rv = -1;
break;
}
}
/*
* Orig = X, Curr = X, New = X
*
* Keep file as is (no changes).
*/
if ((strcmp(sha256_orig, sha256_cur) == 0) &&
(strcmp(sha256_orig, sha256_new) == 0) &&
(strcmp(sha256_cur, sha256_new) == 0)) {
xbps_dbg_printf(xhp, "%s: conf_file %s orig = X, "
"cur = X, new = X\n", pkgver, entry_pname);
rv = 0;
break;
/*
* Orig = X, Curr = X, New = Y
*
* Install new file (installed file hasn't been modified).
*/
} else if ((strcmp(sha256_orig, sha256_cur) == 0) &&
(strcmp(sha256_orig, sha256_new)) &&
(strcmp(sha256_cur, sha256_new))) {
xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
0, pkgver,
"Updating configuration file `%s' provided "
"by `%s'.", cffile, pkgver);
rv = 1;
break;
/*
* Orig = X, Curr = Y, New = X
*
* Keep installed file as is because it has been modified,
* but new package doesn't contain new changes compared
* to the original version.
*/
} else if ((strcmp(sha256_orig, sha256_new) == 0) &&
(strcmp(sha256_cur, sha256_new)) &&
(strcmp(sha256_orig, sha256_cur))) {
xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
0, pkgver,
"Keeping modified configuration file `%s'.",
cffile);
rv = 0;
break;
/*
* Orig = X, Curr = Y, New = Y
*
* Keep file as is because changes made are compatible
* with new version.
*/
} else if ((strcmp(sha256_cur, sha256_new) == 0) &&
(strcmp(sha256_orig, sha256_new)) &&
(strcmp(sha256_orig, sha256_cur))) {
xbps_dbg_printf(xhp, "%s: conf_file %s orig = X, "
"cur = Y, new = Y\n", pkgver, entry_pname);
rv = 0;
break;
/*
* Orig = X, Curr = Y, New = Z
*
* Install new file as <file>.new-<version>
*/
} else if ((strcmp(sha256_orig, sha256_cur)) &&
(strcmp(sha256_cur, sha256_new)) &&
(strcmp(sha256_orig, sha256_new))) {
const char *version;
version = xbps_pkg_version(pkgver);
assert(version);
buf = xbps_xasprintf(".%s.new-%s",
cffile, version);
xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
0, pkgver,
"Installing new configuration file to "
"`%s.new-%s'.", cffile, version);
archive_entry_set_pathname(entry, buf);
free(buf);
rv = 1;
break;
}
}
out:
if (sha256_orig)
free(sha256_orig);
if (sha256_cur)
free(sha256_cur);
xbps_object_iterator_release(iter);
xbps_dbg_printf(xhp, "%s: conf_file %s returned %d\n",
pkgver, entry_pname, rv);
return rv;
}