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Split unpack.c config files and remove obsoletes code into its own files.

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--HG--
extra : convert_revision : xtraeme%40gmail.com-20091128044321-6kmhrrxggv2h681w
This commit is contained in:
Juan RP
2009-11-28 05:43:21 +01:00
parent 6208cc8e30
commit 88ba635780
5 changed files with 373 additions and 299 deletions
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298
lib/unpack.c
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@ -33,7 +33,6 @@
#include <xbps_api.h>
static int unpack_archive_fini(struct archive *, prop_dictionary_t, bool);
static int remove_obsoletes(prop_dictionary_t, prop_dictionary_t);
static void set_extract_flags(int *);
int SYMEXPORT
@ -102,19 +101,6 @@ out:
return rv;
}
/*
* Flags for extracting files in binary packages. If a package
* is marked as "essential", its files will be overwritten and then
* the old and new dictionaries are compared to find out if there
* are some files that were in the old package that should be removed.
*/
#define EXTRACT_FLAGS ARCHIVE_EXTRACT_SECURE_NODOTDOT | \
ARCHIVE_EXTRACT_SECURE_SYMLINKS | \
ARCHIVE_EXTRACT_NO_OVERWRITE | \
ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER
#define FEXTRACT_FLAGS ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | \
ARCHIVE_EXTRACT_TIME | EXTRACT_FLAGS
static void
set_extract_flags(int *flags)
{
@ -125,195 +111,6 @@ set_extract_flags(int *flags)
*flags = EXTRACT_FLAGS;
}
static int
install_config_file(prop_dictionary_t d, struct archive_entry *entry,
const char *pkgname, int *flags, bool *skip)
{
prop_dictionary_t forigd;
prop_object_t obj, obj2;
prop_object_iterator_t iter, iter2;
const char *cffile, *sha256_new = NULL;
char *buf, *sha256_cur = NULL, *sha256_orig = NULL;
int rv = 0;
bool install_new = false;
if (d == NULL)
return 0;
iter = xbps_get_array_iter_from_dict(d, "conf_files");
if (iter == NULL)
return 0;
/*
* Get original hash for the file from current
* installed package.
*/
buf = xbps_xasprintf(".%s/metadata/%s/%s", XBPS_META_PATH,
pkgname, XBPS_PKGFILES);
if (buf == NULL)
return errno;
forigd = prop_dictionary_internalize_from_file(buf);
free(buf);
if (forigd == NULL) {
install_new = true;
goto out;
}
iter2 = xbps_get_array_iter_from_dict(forigd, "conf_files");
if (iter2 != NULL) {
while ((obj2 = prop_object_iterator_next(iter2))) {
if (!prop_dictionary_get_cstring_nocopy(obj2,
"file", &cffile)) {
prop_object_iterator_release(iter2);
rv = errno;
goto out;
}
buf = xbps_xasprintf(".%s", cffile);
if (buf == NULL) {
prop_object_iterator_release(iter2);
rv = errno;
goto out;
}
if (strcmp(archive_entry_pathname(entry), buf) == 0) {
prop_dictionary_get_cstring(obj2, "sha256",
&sha256_orig);
free(buf);
break;
}
free(buf);
buf = NULL;
}
prop_object_iterator_release(iter2);
}
prop_object_release(forigd);
/*
* First case: original hash not found, install new file.
*/
if (sha256_orig == NULL) {
install_new = true;
goto out;
}
/*
* Compare original, installed and new hash for current file.
*/
while ((obj = prop_object_iterator_next(iter))) {
if (!prop_dictionary_get_cstring_nocopy(obj,
"file", &cffile)) {
prop_object_iterator_release(iter);
return errno;
}
buf = xbps_xasprintf(".%s", cffile);
if (buf == NULL) {
prop_object_iterator_release(iter);
return errno;
}
if (strcmp(archive_entry_pathname(entry), buf)) {
free(buf);
buf = NULL;
continue;
}
sha256_cur = xbps_get_file_hash(buf);
free(buf);
if (!prop_dictionary_get_cstring_nocopy(obj,
"sha256", &sha256_new)) {
rv = EINVAL;
break;
}
if (sha256_cur == NULL) {
if (errno == ENOENT) {
/*
* File not installed, install new one.
*/
install_new = true;
break;
} else {
rv = errno;
break;
}
}
/*
* Orig = X, Curr = X, New = X
*
* Install new file.
*/
if ((strcmp(sha256_orig, sha256_cur) == 0) &&
(strcmp(sha256_orig, sha256_new) == 0) &&
(strcmp(sha256_cur, sha256_new) == 0)) {
install_new = true;
break;
/*
* Orig = X, Curr = X, New = Y
*
* Install new file.
*/
} else if ((strcmp(sha256_orig, sha256_cur) == 0) &&
(strcmp(sha256_orig, sha256_new)) &&
(strcmp(sha256_cur, sha256_new))) {
printf("Updating %s file with new version.\n",
cffile);
install_new = true;
break;
/*
* Orig = X, Curr = Y, New = X
*
* Keep current file as is.
*/
} else if ((strcmp(sha256_orig, sha256_new) == 0) &&
(strcmp(sha256_cur, sha256_new)) &&
(strcmp(sha256_orig, sha256_cur))) {
printf("Keeping modified file %s.\n", cffile);
*skip = true;
break;
/*
* Orig = X, Curr = Y, New = Y
*
* Install new file.
*/
} else if ((strcmp(sha256_cur, sha256_new) == 0) &&
(strcmp(sha256_orig, sha256_new)) &&
(strcmp(sha256_orig, sha256_cur))) {
install_new = true;
break;
/*
* Orig = X, Curr = Y, New = Z
*
* Install new file as file.new.
*/
} else if ((strcmp(sha256_orig, sha256_cur)) &&
(strcmp(sha256_cur, sha256_new)) &&
(strcmp(sha256_orig, sha256_new))) {
buf = xbps_xasprintf(".%s.new", cffile);
if (buf == NULL) {
rv = errno;
break;
}
printf("Keeping modified file %s.\n", cffile);
printf("Installing new version as %s.new.\n", cffile);
install_new = true;
archive_entry_set_pathname(entry, buf);
free(buf);
break;
}
}
out:
if (install_new) {
*flags &= ~ARCHIVE_EXTRACT_NO_OVERWRITE;
*flags &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
}
if (sha256_orig)
free(sha256_orig);
if (sha256_cur)
free(sha256_cur);
prop_object_iterator_release(iter);
return rv;
}
/*
* TODO: remove printfs and return appropiate errors to be interpreted by
* the consumer.
@ -425,8 +222,8 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg,
/*
* Handle configuration files.
*/
if ((rv = install_config_file(filesd, entry, pkgname,
&lflags, &skip_entry)) != 0) {
if ((rv = xbps_config_file_from_archive_entry(filesd,
entry, pkgname, &lflags, &skip_entry)) != 0) {
prop_object_release(filesd);
return rv;
}
@ -480,7 +277,7 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg,
free(buf2);
return errno;
}
rv = remove_obsoletes(old_filesd, filesd);
rv = xbps_remove_obsoletes(old_filesd, filesd);
if (rv != 0) {
prop_object_release(old_filesd);
prop_object_release(filesd);
@ -505,92 +302,3 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg,
return rv;
}
static int
remove_obsoletes(prop_dictionary_t oldd, prop_dictionary_t newd)
{
prop_object_iterator_t iter, iter2;
prop_object_t obj, obj2;
prop_string_t oldstr, newstr;
const char *array_str = "files";
char *buf = NULL;
int rv = 0;
bool found, dolinks = false;
iter = iter2 = NULL;
obj = obj2 = NULL;
oldstr = newstr = NULL;
again:
iter = xbps_get_array_iter_from_dict(oldd, array_str);
if (iter == NULL)
return errno;
iter2 = xbps_get_array_iter_from_dict(newd, array_str);
if (iter2 == NULL) {
prop_object_iterator_release(iter);
return errno;
}
/*
* Check for obsolete files, i.e files/links available in
* the old package list not found in new package list.
*/
while ((obj = prop_object_iterator_next(iter))) {
found = false;
oldstr = prop_dictionary_get(obj, "file");
if (oldstr == NULL) {
rv = errno;
goto out;
}
while ((obj2 = prop_object_iterator_next(iter2))) {
newstr = prop_dictionary_get(obj2, "file");
if (newstr == NULL) {
rv = errno;
goto out;
}
if (prop_string_equals(oldstr, newstr)) {
found = true;
break;
}
}
prop_object_iterator_reset(iter2);
if (found)
continue;
/*
* Obsolete file found, remove it.
*/
buf = xbps_xasprintf(".%s", prop_string_cstring_nocopy(oldstr));
if (buf == NULL) {
rv = errno;
goto out;
}
if (remove(buf) == -1) {
printf("WARNING: couldn't remove obsolete %s: %s\n",
dolinks ? "link" : "file",
prop_string_cstring_nocopy(oldstr));
free(buf);
continue;
}
printf("Removed obsolete %s: %s\n",
dolinks ? "link" : "file",
prop_string_cstring_nocopy(oldstr));
free(buf);
}
if (!dolinks) {
/*
* Now look for obsolete links.
*/
dolinks = true;
array_str = "links";
prop_object_iterator_release(iter2);
prop_object_iterator_release(iter);
iter = iter2 = NULL;
goto again;
}
out:
prop_object_iterator_release(iter2);
prop_object_iterator_release(iter);
return rv;
}