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- /* @(#)contrib/execm/execm.c 1.2 10/24/90 05:17:22 */
-
- /*
- * execm.c
- *
- * This program is a substitute for Xenix's /usr/lib/mail/execmail.
- * It is for use in systems running Smail 3. If you install this program
- * as /usr/lib/mail/execmail, and then add the line "set execmail" to
- * /usr/lib/mail/mailrc, then the Xenix /usr/bin/mail program will accept
- * addresses of the form "user@some.domain".
- *
- * NOTE: Installing this program disables the Xenix aliasing and routing
- * facilities (and Micnet). If you really _need_ Micnet, then it
- * may be possible to configure Smail to call the original
- * execmail program. Send me a note if you want to try it.
- *
- * Written by Chip Salzenberg at A T Engineering <chip@ateng.uucp>.
- * Released to Usenet on 01 Dec 1987.
- * Modified 25 Jul 1988 for use with Smail 3.x.
- *
- * Do what you want with this program.
- * I'm not responsible for lost mail -- not that I expect problems. :-)
- */
-
- #include <stdio.h>
- #include <signal.h>
-
- /*
- * Library functions
- */
- extern char *malloc();
-
- /*
- * Globals used for getopt()
- */
- extern char *optarg;
- extern int optind, opterr;
-
- /*
- * The Program
- */
- main(argc, argv)
- int argc;
- char **argv;
- {
- char *progname = argv[0];
- char **sav;
- int sac, ch, badopts;
-
- /*
- * Allocate memory for new arguments, and set the program name.
- * Note the magic number eight; sorry.
- */
- if ((sav = (char **) malloc((argc + 8) * sizeof(char *))) == 0)
- {
- fprintf(stderr, "%s: out of memory?!\n", progname);
- exit(1);
- }
-
- sav[0] = "smail";
- sac = 1;
-
- /*
- * Translate the execmail options to Smail 3.x options.
- */
- badopts = 0;
- while ((ch = getopt(argc, argv, "f:h:mnr")) != EOF)
- {
- switch (ch)
- {
- case 'f': /* Who is this message from? */
- sav[sac++] = "-f";
- sav[sac++] = optarg;
- break;
-
- case 'h': /* Max hop count */
- sav[sac++] = "-h";
- sav[sac++] = optarg;
- break;
-
- case 'm': /* Include sender in alias expansion */
- sav[sac++] = "-m";
- break;
-
- case 'n': /* Disable alias expansion */
- sav[sac++] = "-n";
- break;
-
- case 'r': /* Remote -- via UUCP, not Micnet */
- break; /* smail doesn't understand Micnet anyway */
-
- default: /* Illegal option */
- ++badopts;
- break;
- }
- }
-
- /*
- * If invalid options or no addresses, print usage message and leave.
- */
- if (badopts || optind >= argc)
- {
- fprintf(stderr,
- "usage: %s [-f from][-h hopcount][-m][-n][-r] addresses\n",
- progname);
- exit(1);
- }
-
- /*
- * Finish the argument list.
- */
- while (optind < argc)
- sav[sac++] = argv[optind++];
- sav[sac] = 0;
-
- /*
- * Finally, let smail take over.
- */
- execv("/bin/smail", sav);
- execv("/usr/bin/smail", sav);
-
- fprintf(stderr, "%s: can't execute smail!\n", progname);
- exit(1);
- }
-