Introduce alpm_time_t type

This will always be a 64-bit signed integer rather than the variable length
time_t type. Dates beyond 2038 should be fully supported in the library; the
frontend still lags behind because 32-bit platforms provide no localtime64()
or equivalent function to convert from an epoch value to a broken down time
structure.

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

9 files changed, 29 insertions, 35 deletions

diff --git a/lib/libalpm/add.c b/lib/libalpm/add.c
index 653d2bd9..9fb3b14d 100644
--- a/lib/libalpm/add.c
+++ b/lib/libalpm/add.c
@@ -22,7 +22,6 @@
 
 #include <stdlib.h>
 #include <errno.h>
-#include <time.h>
 #include <string.h>
 #include <limits.h>
 #include <fcntl.h>
diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index a93d4e3e..9fda9406 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -27,9 +27,9 @@
 extern "C" {
 #endif
 
-#include <sys/types.h> /* for off_t */
-#include <time.h> /* for time_t */
-#include <stdarg.h> /* for va_list */
+#include <inttypes.h>  /* int64_t */
+#include <sys/types.h> /* off_t */
+#include <stdarg.h>    /* va_list */
 
 #include <alpm_list.h>
 
@@ -44,6 +44,8 @@ extern "C" {
  * @{
  */
 
+typedef int64_t alpm_time_t;
+
 /*
  * Enumerations
  * These ones are used in multiple contexts, so are forward-declared.
@@ -222,8 +224,8 @@ typedef struct _alpm_pgpkey_t {
 	char *uid;
 	char *name;
 	char *email;
-	time_t created;
-	time_t expires;
+	alpm_time_t created;
+	alpm_time_t expires;
 } alpm_pgpkey_t;
 
 /** Signature result. Contains the key, status, and validity of a given
@@ -754,13 +756,13 @@ const char *alpm_pkg_get_url(alpm_pkg_t *pkg);
  * @param pkg a pointer to package
  * @return the timestamp of the build time
  */
-time_t alpm_pkg_get_builddate(alpm_pkg_t *pkg);
+alpm_time_t alpm_pkg_get_builddate(alpm_pkg_t *pkg);
 
 /** Returns the install timestamp of the package.
  * @param pkg a pointer to package
  * @return the timestamp of the install time
  */
-time_t alpm_pkg_get_installdate(alpm_pkg_t *pkg);
+alpm_time_t alpm_pkg_get_installdate(alpm_pkg_t *pkg);
 
 /** Returns the packager's name.
  * @param pkg a pointer to package
diff --git a/lib/libalpm/be_local.c b/lib/libalpm/be_local.c
index 56cf38bb..21d27481 100644
--- a/lib/libalpm/be_local.c
+++ b/lib/libalpm/be_local.c
@@ -28,7 +28,6 @@
 #include <stdint.h> /* intmax_t */
 #include <sys/stat.h>
 #include <dirent.h>
-#include <time.h>
 #include <limits.h> /* PATH_MAX */
 
 /* libalpm */
@@ -69,13 +68,13 @@ static const char *_cache_get_url(alpm_pkg_t *pkg)
 	return pkg->url;
 }
 
-static time_t _cache_get_builddate(alpm_pkg_t *pkg)
+static alpm_time_t _cache_get_builddate(alpm_pkg_t *pkg)
 {
 	LAZY_LOAD(INFRQ_DESC, 0);
 	return pkg->builddate;
 }
 
-static time_t _cache_get_installdate(alpm_pkg_t *pkg)
+static alpm_time_t _cache_get_installdate(alpm_pkg_t *pkg)
 {
 	LAZY_LOAD(INFRQ_DESC, 0);
 	return pkg->installdate;
@@ -794,11 +793,11 @@ int _alpm_local_db_write(alpm_db_t *db, alpm_pkg_t *info, alpm_dbinfrq_t inforeq
 		}
 		if(info->builddate) {
 			fprintf(fp, "%%BUILDDATE%%\n"
-							"%ld\n\n", info->builddate);
+							"%jd\n\n", (intmax_t)info->builddate);
 		}
 		if(info->installdate) {
 			fprintf(fp, "%%INSTALLDATE%%\n"
-							"%ld\n\n", info->installdate);
+							"%jd\n\n", (intmax_t)info->installdate);
 		}
 		if(info->packager) {
 			fprintf(fp, "%%PACKAGER%%\n"
diff --git a/lib/libalpm/db.h b/lib/libalpm/db.h
index 224bfbeb..a1249d3e 100644
--- a/lib/libalpm/db.h
+++ b/lib/libalpm/db.h
@@ -22,8 +22,6 @@
 #ifndef _ALPM_DB_H
 #define _ALPM_DB_H
 
-#include <time.h>
-
 /* libarchive */
 #include <archive.h>
 #include <archive_entry.h>
diff --git a/lib/libalpm/dload.h b/lib/libalpm/dload.h
index 5442c0e2..57a69f93 100644
--- a/lib/libalpm/dload.h
+++ b/lib/libalpm/dload.h
@@ -23,8 +23,6 @@
 #include "alpm_list.h"
 #include "alpm.h"
 
-#include <time.h>
-
 struct dload_payload {
 	alpm_handle_t *handle;
 	const char *tempfile_openmode;
diff --git a/lib/libalpm/package.c b/lib/libalpm/package.c
index a5ff238f..0b0bf6e4 100644
--- a/lib/libalpm/package.c
+++ b/lib/libalpm/package.c
@@ -87,12 +87,12 @@ int SYMEXPORT alpm_pkg_checkmd5sum(alpm_pkg_t *pkg)
  * populated package structures. */
 static const char *_pkg_get_desc(alpm_pkg_t *pkg)        { return pkg->desc; }
 static const char *_pkg_get_url(alpm_pkg_t *pkg)         { return pkg->url; }
-static time_t _pkg_get_builddate(alpm_pkg_t *pkg)        { return pkg->builddate; }
-static time_t _pkg_get_installdate(alpm_pkg_t *pkg)      { return pkg->installdate; }
+static alpm_time_t _pkg_get_builddate(alpm_pkg_t *pkg)   { return pkg->builddate; }
+static alpm_time_t _pkg_get_installdate(alpm_pkg_t *pkg) { return pkg->installdate; }
 static const char *_pkg_get_packager(alpm_pkg_t *pkg)    { return pkg->packager; }
 static const char *_pkg_get_arch(alpm_pkg_t *pkg)        { return pkg->arch; }
 static off_t _pkg_get_isize(alpm_pkg_t *pkg)             { return pkg->isize; }
-static alpm_pkgreason_t _pkg_get_reason(alpm_pkg_t *pkg)    { return pkg->reason; }
+static alpm_pkgreason_t _pkg_get_reason(alpm_pkg_t *pkg) { return pkg->reason; }
 static int _pkg_has_scriptlet(alpm_pkg_t *pkg)           { return pkg->scriptlet; }
 
 static alpm_list_t *_pkg_get_licenses(alpm_pkg_t *pkg)   { return pkg->licenses; }
@@ -200,14 +200,14 @@ const char SYMEXPORT *alpm_pkg_get_url(alpm_pkg_t *pkg)
 	return pkg->ops->get_url(pkg);
 }
 
-time_t SYMEXPORT alpm_pkg_get_builddate(alpm_pkg_t *pkg)
+alpm_time_t SYMEXPORT alpm_pkg_get_builddate(alpm_pkg_t *pkg)
 {
 	ASSERT(pkg != NULL, return -1);
 	pkg->handle->pm_errno = 0;
 	return pkg->ops->get_builddate(pkg);
 }
 
-time_t SYMEXPORT alpm_pkg_get_installdate(alpm_pkg_t *pkg)
+alpm_time_t SYMEXPORT alpm_pkg_get_installdate(alpm_pkg_t *pkg)
 {
 	ASSERT(pkg != NULL, return -1);
 	pkg->handle->pm_errno = 0;
diff --git a/lib/libalpm/package.h b/lib/libalpm/package.h
index eff7d898..82a83264 100644
--- a/lib/libalpm/package.h
+++ b/lib/libalpm/package.h
@@ -27,7 +27,6 @@
 #include "config.h" /* ensure off_t is correct length */
 
 #include <sys/types.h> /* off_t */
-#include <time.h> /* time_t */
 
 #include "alpm.h"
 #include "backup.h"
@@ -44,8 +43,8 @@
 struct pkg_operations {
 	const char *(*get_desc) (alpm_pkg_t *);
 	const char *(*get_url) (alpm_pkg_t *);
-	time_t (*get_builddate) (alpm_pkg_t *);
-	time_t (*get_installdate) (alpm_pkg_t *);
+	alpm_time_t (*get_builddate) (alpm_pkg_t *);
+	alpm_time_t (*get_installdate) (alpm_pkg_t *);
 	const char *(*get_packager) (alpm_pkg_t *);
 	const char *(*get_arch) (alpm_pkg_t *);
 	off_t (*get_isize) (alpm_pkg_t *);
@@ -89,8 +88,8 @@ struct __alpm_pkg_t {
 	char *base64_sig;
 	char *arch;
 
-	time_t builddate;
-	time_t installdate;
+	alpm_time_t builddate;
+	alpm_time_t installdate;
 
 	off_t size;
 	off_t isize;
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index 243978cd..d723aee2 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -1107,7 +1107,7 @@ off_t _alpm_strtoofft(const char *line)
 	return (off_t)result;
 }
 
-time_t _alpm_parsedate(const char *line)
+alpm_time_t _alpm_parsedate(const char *line)
 {
 	char *end;
 	long long result;
@@ -1120,24 +1120,24 @@ time_t _alpm_parsedate(const char *line)
 		setlocale(LC_TIME, "C");
 		strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm);
 		setlocale(LC_TIME, "");
-		return mktime(&tmp_tm);
+		return (alpm_time_t)mktime(&tmp_tm);
 	}
 
 	result = strtoll(line, &end, 10);
 	if (result == 0 && end == line) {
 		/* line was not a number */
 		errno = EINVAL;
-		return (time_t)0;
+		return 0;
 	} else if (errno == ERANGE) {
 		/* line does not fit in long long */
-		return (time_t)0;
+		return 0;
 	} else if (*end) {
 		/* line began with a number but has junk left over at the end */
 		errno = EINVAL;
-		return (time_t)0;
+		return 0;
 	}
 
-	return (time_t)result;
+	return (alpm_time_t)result;
 }
 
 /**
diff --git a/lib/libalpm/util.h b/lib/libalpm/util.h
index 2a2d3a93..017bf518 100644
--- a/lib/libalpm/util.h
+++ b/lib/libalpm/util.h
@@ -35,7 +35,6 @@
 #include <string.h>
 #include <stdarg.h>
 #include <stddef.h> /* size_t */
-#include <time.h>
 #include <sys/stat.h> /* struct stat */
 #include <archive.h> /* struct archive */
 #include <math.h> /* fabs */
@@ -120,7 +119,7 @@ int _alpm_splitname(const char *target, char **name, char **version,
 		unsigned long *name_hash);
 unsigned long _alpm_hash_sdbm(const char *str);
 off_t _alpm_strtoofft(const char *line);
-time_t _alpm_parsedate(const char *line);
+alpm_time_t _alpm_parsedate(const char *line);
 int _alpm_raw_cmp(const char *first, const char *second);
 int _alpm_raw_ncmp(const char *first, const char *second, size_t max);
 int _alpm_access(alpm_handle_t *handle, const char *dir, const char *file, int amode);