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commit ccc899c7f4751ba72dcd7330c55614cf986f0fa3
parent 2a52befa56eec493d4179c1568c7e6cd26d9ae23
Author: Christoph Biedl <>
Date:   Tue, 25 Aug 2015 18:12:05 +0200

Reproducible builds

At the moment ngircd fails the tests for reproducible builds in Debian
since it uses the __DATE__ and __TIME__ macros for the INFO command.

Instead of patching this out I decided to implement an optional
constant BIRTHTIME that allows you to set a time stamp for the "Birth
Date" information, in seconds since the epoch, like in

    export CFLAGS += -DBIRTHTIME=$(shell date +%s --date="2015/08/15 23:42:22")

In the future, Debian will provide a SOURCE_DATE_EPOCH environment
variable, dealing with the situation until then will be my job.

The time format was taken from the NGIRCd_StartStr formatting in
ngircd.c so the "Birth Date" and "On-line since" lines in the INFO
output look similar: 371 nick :ngIRCd 22.1-IDENT+IPv6+IRCPLUS+PAM+SSL+SYSLOG+ZLIB-x86_64/pc/linux-gnu 371 nick :Birth Date: Tue Aug 25 2015 at 18:11:11 (CEST) 371 nick :On-line since Tue Aug 25 2015 at 18:11:33 (CEST) 374 nick :End of INFO list

The format of the time stamped is changed, but as far as I can tell, there's no
rule that is violated by that.

Bonus level: Reformat the messages so the time stamps are aligned.

Msrc/ngircd/irc-info.c | 10+++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/ngircd/irc-info.c b/src/ngircd/irc-info.c @@ -558,7 +558,15 @@ IRC_INFO(CLIENT * Client, REQUEST * Req) NGIRCd_Version)) return DISCONNECTED; -#if defined(__DATE__) && defined(__TIME__) +#if defined(BIRTHDATE) + char t_str[60]; + time_t t = BIRTHDATE; + (void)strftime(t_str, sizeof(t_str), "%a %b %d %Y at %H:%M:%S (%Z)", + localtime(&t)); + snprintf(msg, sizeof(msg), "Birth Date: %s", t_str); + if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg)) + return DISCONNECTED; +#elif defined(__DATE__) && defined(__TIME__) snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__); if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg)) return DISCONNECTED;