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authorAllan McRae <allan@archlinux.org>2016-03-20 21:23:32 +1000
committerAllan McRae <allan@archlinux.org>2016-03-28 17:16:27 +1000
commit2ee1706a72858ea365c0e7a1a72d92ef2dae2f75 (patch)
treeb84c10be1e9f2dadb9ef454e7699e23acd07e9f5
parent4cad2423a34d9bb740375f121d2390cd3cf925dc (diff)
Do not add root prefix twice when checking database files
When checking .INSTALL and .CHANGELOG files in the mtree file, we need to find the path they are stored in the local database. This was appending the root prefix twice as alpm_option_get_dbpath already returns the absolute path to the database. While fixing that issue I added checks that the paths for the database files were not longer than PATH_MAX. Fixes FS#48563. Signed-off-by: Allan McRae <allan@archlinux.org>
-rw-r--r--src/pacman/check.c54
1 files changed, 30 insertions, 24 deletions
diff --git a/src/pacman/check.c b/src/pacman/check.c
index 0fe74e83..d282cc27 100644
--- a/src/pacman/check.c
+++ b/src/pacman/check.c
@@ -254,7 +254,6 @@ int check_pkg_full(alpm_pkg_t *pkg)
const char *root, *pkgname;
size_t errors = 0;
size_t rootlen;
- char filepath[PATH_MAX];
struct archive *mtree;
struct archive_entry *entry = NULL;
size_t file_count = 0;
@@ -267,7 +266,6 @@ int check_pkg_full(alpm_pkg_t *pkg)
pm_printf(ALPM_LOG_ERROR, _("path too long: %s%s\n"), root, "");
return 1;
}
- strcpy(filepath, root);
pkgname = alpm_pkg_get_name(pkg);
mtree = alpm_pkg_mtree_open(pkg);
@@ -282,6 +280,8 @@ int check_pkg_full(alpm_pkg_t *pkg)
while(alpm_pkg_mtree_next(pkg, mtree, &entry) == ARCHIVE_OK) {
struct stat st;
const char *path = archive_entry_pathname(entry);
+ char filepath[PATH_MAX];
+ int filepath_len;
mode_t type;
size_t file_errors = 0;
int backup = 0;
@@ -292,31 +292,37 @@ int check_pkg_full(alpm_pkg_t *pkg)
path += 2;
}
- if(strcmp(path, ".INSTALL") == 0) {
- char filename[PATH_MAX];
- snprintf(filename, PATH_MAX, "%slocal/%s-%s/install",
- alpm_option_get_dbpath(config->handle) + 1,
- pkgname, alpm_pkg_get_version(pkg));
- archive_entry_set_pathname(entry, filename);
- path = archive_entry_pathname(entry);
- } else if(strcmp(path, ".CHANGELOG") == 0) {
- char filename[PATH_MAX];
- snprintf(filename, PATH_MAX, "%slocal/%s-%s/changelog",
- alpm_option_get_dbpath(config->handle) + 1,
- pkgname, alpm_pkg_get_version(pkg));
- archive_entry_set_pathname(entry, filename);
- path = archive_entry_pathname(entry);
- } else if(*path == '.') {
- continue;
- }
+ if(*path == '.') {
+ const char *dbfile = NULL;
- file_count++;
+ if(strcmp(path, ".INSTALL") == 0) {
+ dbfile = "install";
+ } else if(strcmp(path, ".CHANGELOG") == 0) {
+ dbfile = "changelog";
+ } else {
+ continue;
+ }
- if(rootlen + 1 + strlen(path) > PATH_MAX) {
- pm_printf(ALPM_LOG_WARNING, _("path too long: %s%s\n"), root, path);
- continue;
+ /* Do not append root directory as alpm_option_get_dbpath is already
+ * an absoute path */
+ filepath_len = snprintf(filepath, PATH_MAX, "%slocal/%s-%s/%s",
+ alpm_option_get_dbpath(config->handle),
+ pkgname, alpm_pkg_get_version(pkg), dbfile);
+ if(filepath_len >= PATH_MAX) {
+ pm_printf(ALPM_LOG_WARNING, _("path too long: %slocal/%s-%s/%s\n"),
+ alpm_option_get_dbpath(config->handle),
+ pkgname, alpm_pkg_get_version(pkg), dbfile);
+ continue;
+ }
+ } else {
+ filepath_len = snprintf(filepath, PATH_MAX, "%s%s", root, path);
+ if(filepath_len >= PATH_MAX) {
+ pm_printf(ALPM_LOG_WARNING, _("path too long: %s%s\n"), root, path);
+ continue;
+ }
}
- strcpy(filepath + rootlen, path);
+
+ file_count++;
exists = check_file_exists(pkgname, filepath, rootlen, &st);
if(exists == 1) {