Fix some issues with localized dates/epoch usage

Commit 47622eef4dd8fd86a0aa0e3ebdb7b33f7c9d6804 introduced localized times
in the metadata by way of storing the UNIX epoch value instead of a hard
coded date string. However, it missed a few things:
* If we weren't in the C/POSIX/en_US locale, the date parsing would fail
  as it tried to use the abbreviations of the locale being used. Fix this
  by switching the LC_TIME value before we parse a date.
* We used ctime to print the date value, which is always the C locale
  string. Instead, use strftime to print a localized date string.

Signed-off-by: Dan McGee <dan@archlinux.org>

2 files changed, 6 insertions, 0 deletions

diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index 793a5c63..4b85306b 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -337,8 +337,10 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
 				char first = tolower(tmp[0]);
 				if(first > 'a' && first < 'z') {
 					struct tm tmp_tm = {0}; //initialize to null incase of failure
+					setlocale(LC_TIME, "C");
 					strptime(tmp, "%a %b %e %H:%M:%S %Y", &tmp_tm);
 					info->builddate = mktime(&tmp_tm);
+					setlocale(LC_TIME, "");
 				} else {
 					info->builddate = atol(tmp);
 				}
@@ -352,8 +354,10 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
 				char first = tolower(tmp[0]);
 				if(first > 'a' && first < 'z') {
 					struct tm tmp_tm = {0}; //initialize to null incase of failure
+					setlocale(LC_TIME, "C");
 					strptime(tmp, "%a %b %e %H:%M:%S %Y", &tmp_tm);
 					info->installdate = mktime(&tmp_tm);
+					setlocale(LC_TIME, "");
 				} else {
 					info->installdate = atol(tmp);
 				}
diff --git a/lib/libalpm/package.c b/lib/libalpm/package.c
index 5103a382..1e59938f 100644
--- a/lib/libalpm/package.c
+++ b/lib/libalpm/package.c
@@ -852,8 +852,10 @@ static int parse_descfile(const char *descfile, pmpkg_t *info)
 				char first = tolower(ptr[0]);
 				if(first > 'a' && first < 'z') {
 					struct tm tmp_tm = {0}; //initialize to null incase of failure
+					setlocale(LC_TIME, "C");
 					strptime(ptr, "%a %b %e %H:%M:%S %Y", &tmp_tm);
 					info->builddate = mktime(&tmp_tm);
+					setlocale(LC_TIME, "");
 				} else {
 					info->builddate = atol(ptr);
 				}