altzone

Hello.

An ITP has been filed against wnpp that I wish to package OpenSCEP (Bug #118532). This is a server to help you build scaleable VPNs using Ciscos Certificate Enrollment Protocol.

This question might be better of at a gcc mailing list, but I will try here first and apologize for the possible inconvenience.

I have compiled a crippled version (I will explain why) and ran parts og the enrollment process with success. So the whole suite seems to work fine and configuration seems correct. The program is crippled as I had to cripple a function ``asn1_time_to_time'' in order to make the program compile.

I have tried to compile with both gcc3 and gcc2.95. I have tried different version of OpenSSL and OpenLDAP (upon which the program relies) with no result.

The real issue here is that I don't program C, but I will try to explain.

Running make yields the error:

sceplist.o: In function `asn1_time_to_time':
/home/lars/src/openscep-0.3.6/scepd/sceplist.c:127: undefined reference to `altzone'

Now I gather that ``altzone'' should be declared in /usr/include/time.h from what I can gather from Google. Furthermore ctime(3) states that altzone should be present if the system is to be Posix compliant. (Correct me if I am wrong.).

There is no mention of ``altzone'' in either /usr/lib or /usr/include as far as I can make out. But the "twin variable" ``timezone'' is however declared (in /usr/include/time.h)

So, why "twin variable"? Well the code in sceplist.c looks like this (with line 127 marked by me):

----------------------------------------------------------------------
/* convert ASN1 time string to a struct tm */
static time_t   asn1_time_to_time(ASN1_TIME *tm) {
        struct tm       rtm;
        char            work[3];
        time_t          rt;
        extern time_t   timezone, altzone;

/* prepare work and result buffers for the conversions */
        memset(work, '\0', sizeof(work));
        memset(&rtm, 0, sizeof(struct tm));

/* convert ASN1 time string to struct tm structure elements*/
        memcpy(work, tm->data + 10, 2);
        rtm.tm_sec = atoi(work);
        memcpy(work, tm->data + 8, 2);
        rtm.tm_min = atoi(work);
        memcpy(work, tm->data + 6, 2);
        rtm.tm_hour = atoi(work);
        memcpy(work, tm->data + 4, 2);
        rtm.tm_mday = atoi(work);
        memcpy(work, tm->data + 2, 2);
        rtm.tm_mon = atoi(work);
        memcpy(work, tm->data, 2);
        rtm.tm_year = atoi(work);
        if (rtm.tm_year < 70)
                rtm.tm_year += 100;

/* set the time zone to GMT, as mktime uses the local time zone*/
[LARS: THIS IS LINE 127] timezone = 0; altzone = 0;

/* use mktime to normalize the structure and t convert to a     */
/* time_t value                                                 */
        rt = mktime(&rtm);

/* reset the time zone to local settings                        */
        tzset();

        return rt;
}
----------------------------------------------------------------------

As you can see for yourself, ``altzone '' is used twice. The first mention seems to me to be a declaration and the second an assignment.

And well, ... I just don't get it.

The documentation mentions that some compilers might need to be executed as :

``CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure''

But there is no posix library as far as I can make out in Debian, so that won't do.

I have been struggling with this for some weeks now, but I am none the wiser.

I hope someone out there can point me in the right direction or just downright solve the problem.

The source is available from the project homepage at http://openscep.othello.org/ btw.

--
Lars Bahner,
http://lars.bahner.com/

All will reveal itself and things will be clear.