244 lines
7.1 KiB
C
244 lines
7.1 KiB
C
/*-
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* Copyright (c) 2009-2014 Juan Romero Pardines.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "xbps_api_impl.h"
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/*
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* Returns true if entry is a configuration file, false otherwise.
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*/
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int HIDDEN
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xbps_entry_is_a_conf_file(xbps_dictionary_t filesd,
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const char *entry_pname)
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{
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xbps_array_t array;
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xbps_dictionary_t d;
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const char *cffile;
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array = xbps_dictionary_get(filesd, "conf_files");
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if (xbps_array_count(array) == 0)
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return false;
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for (unsigned int i = 0; i < xbps_array_count(array); i++) {
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d = xbps_array_get(array, i);
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xbps_dictionary_get_cstring_nocopy(d, "file", &cffile);
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if (strcmp(cffile, entry_pname) == 0)
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return true;
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}
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return false;
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}
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/*
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* Returns 1 if entry should be installed, 0 if don't or -1 on error.
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*/
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int HIDDEN
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xbps_entry_install_conf_file(struct xbps_handle *xhp,
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xbps_dictionary_t binpkg_filesd,
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xbps_dictionary_t pkg_filesd,
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struct archive_entry *entry,
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const char *entry_pname,
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const char *pkgver)
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{
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xbps_object_t obj, obj2;
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xbps_object_iterator_t iter, iter2;
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const char *version = NULL, *cffile, *sha256_new = NULL;
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char buf[PATH_MAX], *sha256_cur = NULL, *sha256_orig = NULL;
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int rv = 0;
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assert(xbps_object_type(binpkg_filesd) == XBPS_TYPE_DICTIONARY);
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assert(entry);
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assert(entry_pname);
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assert(pkgver);
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iter = xbps_array_iter_from_dict(binpkg_filesd, "conf_files");
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if (iter == NULL)
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return -1;
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/*
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* Get original hash for the file from current
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* installed package.
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*/
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xbps_dbg_printf(xhp, "%s: processing conf_file %s\n",
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pkgver, entry_pname);
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if (pkg_filesd == NULL) {
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/*
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* File exists on disk but it's not managed by the same package.
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* Install it as file.new-<version>.
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*/
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version = xbps_pkg_version(pkgver);
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assert(version);
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xbps_dbg_printf(xhp, "%s: conf_file %s not currently "
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"installed, renaming to %s.new-%s\n", pkgver, entry_pname, version);
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snprintf(buf, sizeof(buf), "%s.new-%s", entry_pname, version);
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xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
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0, pkgver, "File `%s' exists, installing configuration file to `%s'.", entry_pname, buf);
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archive_entry_copy_pathname(entry, buf);
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rv = 1;
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goto out;
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}
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iter2 = xbps_array_iter_from_dict(pkg_filesd, "conf_files");
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if (iter2 != NULL) {
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while ((obj2 = xbps_object_iterator_next(iter2))) {
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xbps_dictionary_get_cstring_nocopy(obj2,
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"file", &cffile);
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snprintf(buf, sizeof(buf), ".%s", cffile);
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if (strcmp(entry_pname, buf) == 0) {
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xbps_dictionary_get_cstring(obj2, "sha256", &sha256_orig);
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break;
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}
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}
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xbps_object_iterator_release(iter2);
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}
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/*
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* First case: original hash not found, install new file.
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*/
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if (sha256_orig == NULL) {
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xbps_dbg_printf(xhp, "%s: conf_file %s not installed\n",
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pkgver, entry_pname);
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rv = 1;
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goto out;
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}
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/*
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* Compare original, installed and new hash for current file.
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*/
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while ((obj = xbps_object_iterator_next(iter))) {
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xbps_dictionary_get_cstring_nocopy(obj, "file", &cffile);
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snprintf(buf, sizeof(buf), ".%s", cffile);
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if (strcmp(entry_pname, buf)) {
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continue;
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}
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sha256_cur = xbps_file_hash(buf);
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xbps_dictionary_get_cstring_nocopy(obj, "sha256", &sha256_new);
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if (sha256_cur == NULL) {
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if (errno == ENOENT) {
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/*
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* File not installed, install new one.
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*/
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xbps_dbg_printf(xhp, "%s: conf_file %s not "
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"installed\n", pkgver, entry_pname);
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rv = 1;
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break;
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} else {
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rv = -1;
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break;
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}
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}
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/*
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* Orig = X, Curr = X, New = X
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*
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* Keep file as is (no changes).
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*/
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if ((strcmp(sha256_orig, sha256_cur) == 0) &&
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(strcmp(sha256_orig, sha256_new) == 0) &&
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(strcmp(sha256_cur, sha256_new) == 0)) {
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xbps_dbg_printf(xhp, "%s: conf_file %s orig = X, "
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"cur = X, new = X\n", pkgver, entry_pname);
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rv = 0;
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break;
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/*
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* Orig = X, Curr = X, New = Y
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*
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* Install new file (installed file hasn't been modified).
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*/
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} else if ((strcmp(sha256_orig, sha256_cur) == 0) &&
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(strcmp(sha256_orig, sha256_new)) &&
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(strcmp(sha256_cur, sha256_new))) {
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xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
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0, pkgver,
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"Updating configuration file `%s' provided "
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"by `%s'.", cffile, pkgver);
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rv = 1;
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break;
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/*
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* Orig = X, Curr = Y, New = X
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*
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* Keep installed file as is because it has been modified,
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* but new package doesn't contain new changes compared
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* to the original version.
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*/
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} else if ((strcmp(sha256_orig, sha256_new) == 0) &&
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(strcmp(sha256_cur, sha256_new)) &&
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(strcmp(sha256_orig, sha256_cur))) {
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xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
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0, pkgver,
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"Keeping modified configuration file `%s'.",
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cffile);
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rv = 0;
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break;
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/*
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* Orig = X, Curr = Y, New = Y
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*
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* Keep file as is because changes made are compatible
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* with new version.
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*/
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} else if ((strcmp(sha256_cur, sha256_new) == 0) &&
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(strcmp(sha256_orig, sha256_new)) &&
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(strcmp(sha256_orig, sha256_cur))) {
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xbps_dbg_printf(xhp, "%s: conf_file %s orig = X, "
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"cur = Y, new = Y\n", pkgver, entry_pname);
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rv = 0;
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break;
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/*
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* Orig = X, Curr = Y, New = Z
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*
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* Install new file as <file>.new-<version>
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*/
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} else if ((strcmp(sha256_orig, sha256_cur)) &&
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(strcmp(sha256_cur, sha256_new)) &&
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(strcmp(sha256_orig, sha256_new))) {
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version = xbps_pkg_version(pkgver);
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assert(version);
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snprintf(buf, sizeof(buf), ".%s.new-%s", cffile, version);
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xbps_set_cb_state(xhp, XBPS_STATE_CONFIG_FILE,
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0, pkgver, "File `%s' exists, installing configuration file to `%s'.", cffile, buf);
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archive_entry_copy_pathname(entry, buf);
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rv = 1;
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break;
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}
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free(sha256_cur);
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sha256_cur = NULL;
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}
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out:
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if (sha256_orig)
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free(sha256_orig);
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if (sha256_cur)
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free(sha256_cur);
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xbps_object_iterator_release(iter);
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xbps_dbg_printf(xhp, "%s: conf_file %s returned %d\n",
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pkgver, entry_pname, rv);
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return rv;
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}
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