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From: Maria Valentina Marin <marivalenm@gmail.com>
Date: Wed, 19 Aug 2015 17:51:02 +0000
Subject: 0035 source date epoch
Make man2html use the latest date in debian/changelog as the timestamp for its
html output if $SOURCE_DATE_EPOCH is exported. Otherwise man2html continues with
its default behaviour of using the date of today to produce its timestamps.
Bug-Debian: https://bugs.debian.org/796130
---
man2html/cgibase.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/man2html/cgibase.c b/man2html/cgibase.c
index b296c1d..a677473 100644
--- a/man2html/cgibase.c
+++ b/man2html/cgibase.c
@@ -8,6 +8,8 @@
#include <ctype.h> /* tolower() */
#include <string.h> /* strlen() */
#include "defs.h"
+#include <errno.h>
+#include <limits.h>
/*
* The default is to use cgibase. With relative html style
@@ -83,11 +85,39 @@ void print_sig()
char timebuf[TIMEBUFSZ];
struct tm *timetm;
time_t now;
+ char *source_date_epoch;
+ unsigned long long epoch;
+ char *endptr;
timebuf[0] = 0;
#ifdef TIMEFORMAT
sprintf(timebuf, "Time: ");
+ source_date_epoch = getenv("SOURCE_DATE_EPOCH");
+ if (source_date_epoch) {
+ errno = 0;
+ epoch = strtoull(source_date_epoch, &endptr, 10);
+ if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
+ || (errno != 0 && epoch == 0)) {
+ fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: strtoull: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ if (endptr == source_date_epoch) {
+ fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: No digits were found: %s\n", endptr);
+ exit(EXIT_FAILURE);
+ }
+ if (*endptr != '\0') {
+ fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: Trailing garbage: %s\n", endptr);
+ exit(EXIT_FAILURE);
+ }
+ if (epoch > ULONG_MAX) {
+ fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to: %lu but was found to be: %llu \n", ULONG_MAX ,epoch);
+ exit(EXIT_FAILURE);
+ }
+ now=epoch;
+ }
+ else {
now=time(NULL);
+ }
timetm=gmtime(&now);
strftime(timebuf+6, TIMEBUFSZ-6, TIMEFORMAT, timetm);
timebuf[TIMEBUFSZ-1] = 0;
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