Re: other services ok, ftp not (was 1.5.11 - tcp problems)

[Carlo Florendo <list-subscriber at hq dot astra dot ph>]

Hello Brian,

Brian Dessent wrote:

> Carlo Florendo wrote:
>
>  
>
> > File:  inetutils-1.3.2-28 /ftp/main.c  (line numbers preceed each line)
> >
> > 147     sp = getservbyname("ftp", "tcp");
> > 148     if (sp == 0)
> > 149         errx(1, "ftp/tcp: unknown service");
> >    
>
> Okay, so the 'SYSTEM' thing was a red herring, and you're just running
> this from a normal command prompt.  Your SYSTEMROOT is set 
absolutely.

> and nothing
> seems odd in your cygcheck, and permissions on the "services" file seem
> okay.  Although I think your reasoning there is a little off-base:
> Cygwin itself does not attempt to access that file at all.  Cygwin's
> getservbyname() just a straight passthru to the Winsock function of the
> same name which does the actual lookup.
>  
Ok. thanks for the info.

> Try the following and see what happens:
>
> cat <<ENDL >getservbyname.c && \
>    gcc getservbyname.c -o getservbyname && ./getservbyname
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> #include <errno.h>
> #include <netdb.h>
> #include <netinet/in.h>
>
> int main(int argc, char *argv[])
> {
>    struct servent *sv = getservbyname("ftp", "tcp");
>    
>    if(sv)
>        printf( "getservbyname() returned port %hu\n",
>            ntohs(sv->s_port));    
>    else
>        printf( "getservbyname() returned NULL: %s\n",
>            strerror(errno));    
> }
> ENDL
>  

Here's what I got:

getservbyname() returned NULL: Operation not permitted


> Also try the following variant that will create a mingw version of the
> same test:
>
>
> cat <<ENDL >getservbyname-mingw.c && gcc -mno-cygwin \
> getservbyname-mingw.c -o getservbyname-mingw && ./getservbyname-mingw
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> #include <errno.h>
> #include <winsock2.h>
>
> int main(int argc, char *argv[])
> {
>    struct servent *sv;
>    WORD wVersionRequested;
>    WSADATA wsaData;
>    int err;
>
>    wVersionRequested = MAKEWORD( 2, 2 );
>
>    err = WSAStartup( wVersionRequested, &wsaData );
>    if( err != 0 ) {
>        printf( "Unable to load ws2_32.dll: error %u\n", err);
>      	exit(1);
>    }
>    if( ( sv = getservbyname("ftp", "tcp") ) )
>        printf( "getservbyname() returned port %hu\n",
>            ntohs(sv->s_port));    
>    else
>        printf( "getservbyname() returned NULL: win32 error %u\n",
>            WSAGetLastError());
> }
> ENDL
>
>  
This one didn't link properly.  Anyway, here's the output:

/cygdrive/c/DOCUME~1/Carlo/LOCALS~1/Temp/ccYVHUNc.o(.text+0x3f):getservbyname-mingw.c: 
undefined reference to `_WSAStartup@8'
/cygdrive/c/DOCUME~1/Carlo/LOCALS~1/Temp/ccYVHUNc.o(.text+0x87):getservbyname-mingw.c: 
undefined reference to `_getservbyname@8'
/cygdrive/c/DOCUME~1/Carlo/LOCALS~1/Temp/ccYVHUNc.o(.text+0xa2):getservbyname-mingw.c: 
undefined reference to `_ntohs@4'
/cygdrive/c/DOCUME~1/Carlo/LOCALS~1/Temp/ccYVHUNc.o(.text+0xbf):getservbyname-mingw.c: 
undefined reference to `_WSAGetLastError@0'
collect2: ld returned 1 exit status

> Both of those should say "getservbyname() returned port 21".  If either
> fails, paste the output.  I suppose it's remotely possible that
> something's wrong with wsock32.dll or ws2_32.dll on your system, but if
> that was the case you'd have many more problems I'd think.
>
>  
Hmmm.  There's something fishy of my system....

Thanks a lot!

Best Regards,

Carlo

--
Carlo Florendo
Astra Philippines Inc.
www.astra.ph



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