Use UTC date everywhere

I thought I could preserve the original time zone but it turns out that
libc is just too shit to do that.

4 files changed, 11 insertions, 16 deletions

diff --git a/archive.h b/archive.h
index 6342236..0dac623 100644
--- a/archive.h
+++ b/archive.h
@@ -40,8 +40,7 @@ struct AddressList {
 };
 
 struct Envelope {
-	time_t utc;
-	struct tm date;
+	time_t date;
 	char *subject;
 	struct Address from, sender, replyTo;
 	struct AddressList to, cc, bcc;
diff --git a/atom.c b/atom.c
index 83a4457..aa98406 100644
--- a/atom.c
+++ b/atom.c
@@ -33,7 +33,7 @@ static char *atomID(const char *messageID) {
 int atomEntryOpen(FILE *file, const struct Envelope *envelope) {
 	char *id = atomID(envelope->messageID);
 	char date[sizeof("0000-00-00T00:00:00Z")];
-	strftime(date, sizeof(date), "%FT%TZ", gmtime(&envelope->utc));
+	strftime(date, sizeof(date), "%FT%TZ", gmtime(&envelope->date));
 	struct Variable vars[] = {
 		{ "subject", envelope->subject },
 		{ "from.name", addressName(envelope->from) },
diff --git a/html.c b/html.c
index e92ab0a..808e799 100644
--- a/html.c
+++ b/html.c
@@ -89,10 +89,8 @@ int htmlMessageHead(FILE *file, const struct Envelope *envelope) {
 	);
 	char *mbox = templateURL("../message/[pathID].mbox", urlVars);
 
-	char date[256];
-	char utc[sizeof("0000-00-00T00:00:00Z")];
-	strftime(date, sizeof(date), "%c %z", &envelope->date);
-	strftime(utc, sizeof(utc), "%FT%TZ", gmtime(&envelope->utc));
+	char date[sizeof("0000-00-00T00:00:00Z")];
+	strftime(date, sizeof(date), "%FT%TZ", gmtime(&envelope->date));
 	struct Variable vars[] = {
 		{ "messageID", envelope->messageID },
 		{ "fragment", fragment },
@@ -100,7 +98,6 @@ int htmlMessageHead(FILE *file, const struct Envelope *envelope) {
 		{ "mailto", mailto },
 		{ "from", addressName(envelope->from) },
 		{ "date", date },
-		{ "utc", utc },
 		{ "mbox", mbox },
 		{0},
 	};
@@ -109,7 +106,7 @@ int htmlMessageHead(FILE *file, const struct Envelope *envelope) {
 		<summary>
 			<a class="subject" href="[fragment]">[subject]</a>
 			<address class="from"><a href="[mailto]">[from]</a></address>
-			<time datetime="[utc]">[date]</time>
+			<time datetime="[date]">[date]</time>
 			<a class="mbox" href="[mbox]">mbox</a>
 		</summary>
 	);
diff --git a/parse.c b/parse.c
index 6f1a56b..8d3205d 100644
--- a/parse.c
+++ b/parse.c
@@ -66,21 +66,20 @@ void parseEnvelope(struct Envelope *envelope, struct List list) {
 		errx(EX_PROTOCOL, "missing envelope structure fields");
 	}
 
+	struct tm tm;
 	const char *date = dataCheck(list.ptr[Date], String).string;
 	if (isalpha(date[0])) {
-		date = strptime(date, "%a, %e %b %Y %H:%M:%S ", &envelope->date);
+		date = strptime(date, "%a, %e %b %Y %H:%M:%S ", &tm);
 	} else {
-		date = strptime(date, "%e %b %Y %H:%M:%S ", &envelope->date);
+		date = strptime(date, "%e %b %Y %H:%M:%S ", &tm);
 	}
 	if (date && (date[0] == '+' || date[0] == '-')) {
-		date = strptime(date, "%z", &envelope->date);
+		date = strptime(date, "%z", &tm);
 	} else if (date) {
-		date = strptime(date, "%Z", &envelope->date);
+		date = strptime(date, "%Z", &tm);
 	}
 	if (!date) errx(EX_PROTOCOL, "invalid envelope date format");
-
-	envelope->date.tm_isdst = -1;
-	envelope->utc = mktime(&envelope->date);
+	envelope->date = mktime(&tm);
 
 	// TODO: Decode UTF-8 in subject.
 	envelope->subject = strdup(dataCheck(list.ptr[Subject], String).string);