source: trunk/athena/etc/track/nullmail.c @ 12350

#ifndef lint
static char rcsid[] = "$Id: nullmail.c,v 3.2 1999-01-22 23:16:01 ghudson Exp $";
#endif

#include <stdio.h>
#include "bellcore-copyright.h"
#include "mit-copyright.h"

#define LINELN  256

extern FILE *popen();
/*
**      program to swollow null message, but exec mail if necessary
*/
main(argc,argv)
int argc;
char **argv;
{
        int buf,i,tmpstat;
        char errline[LINELN],mailcmd[LINELN];
        static char errmsg[LINELN] = "";
        FILE *paper,*mailpipe;

        if ((buf = getc(stdin))!=  EOF)
        {
                if (argc < 2)
                {
                        sprintf(errmsg,"not enough arguments");
                        goto trouble;
                }
                strcpy(mailcmd,"/bin/mail");
                for (i=1;i<argc;i++)
                {
                        strcat(mailcmd," ");
                        strcat(mailcmd,argv[i]);
                }
                if ((mailpipe = popen(mailcmd, "w")) == NULL)
                {
                        sprintf(errmsg,"can't execute mail command");
                        goto trouble;
                }
                putc(buf,mailpipe);     /* output first char */
                /*
                **      keep reading and writing
                */
                while((buf =getc(stdin)) != EOF )
                {
                        putc(buf,mailpipe);
                }
                /*
                **      mail swollows an unfinished line - damn.
                **      stick an extra newline
                */
                putc('\n',mailpipe);
                if ((tmpstat = pclose(mailpipe)) != 0)
                {
                        sprintf(errmsg,"bad return code octal -- %o",tmpstat);
                        goto trouble;
                }
                exit(0);

                /*
                **      shouldn't get here . . . complain like hell
                */
trouble:;
                sprintf(errline,
                        "\n\r\t\tWARNING %s FAILED -- %s\n\r\t\t\tmail from automatic software installation probably lost\n\r",
                        argv[0],errmsg);
                if ((paper = fopen("/dev/console","w")) != NULL)
                {
                        fprintf(paper,"%s\n",errline);
                }
                fprintf(stderr,"%s\n",errline);
                exit(1);
        }
        exit(0);
}