add current_year() function for use in address

2 files changed, 15 insertions, 5 deletions

diff --git a/blog.c b/blog.c
index 5ff100b..2685eb2 100644
--- a/blog.c
+++ b/blog.c
@@ -9,6 +9,17 @@
 #include <unistd.h>
 #include "blog.h"
 
+int current_year(void)
+{
+	static int year = 0;
+	if (year == 0) {
+		time_t t = time(NULL);
+		struct tm *tm = localtime(&t);
+		year = tm->tm_year + 1900;
+	}
+	return year;
+}
+
 int handle_post(void)
 {
 	read_post_data();
@@ -60,14 +71,13 @@ int handle_post(void)
 	if (write(newpost, body, strlen(body)) != strlen(body)) {
 		return 1;
 	}
-	dprintf(newpost, HTML_TAIL, tm->tm_year + 1900);
+	dprintf(newpost, HTML_TAIL, current_year());
 
 	close(newpost);
 	close(blogdir);
 
 	add_to_index(uri, title);
 
-
 	printf("Status: 302 Found\r\n");
 	printf("Location: http%s://%s/%s\r\n\r\n", getenv("HTTPS") ? "s" : "", getenv("HTTP_HOST"), uri);
 	return 0;
@@ -93,9 +103,7 @@ int main(void)
 	puts("<input type=\"submit\">");
 	puts("</form>");
 
-	time_t t = time(NULL);
-	struct tm *tm = localtime(&t);
-	printf(HTML_TAIL, tm->tm_year + 1900);
+	printf(HTML_TAIL, current_year());
 
 	return 0;
 }
diff --git a/blog.h b/blog.h
index d61d670..590c18b 100644
--- a/blog.h
+++ b/blog.h
@@ -29,4 +29,6 @@ int show_entry(const char *path);
 
 void add_to_index(const char *path, const char *title);
 
+int current_year(void);
+
 #endif