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- /*
- * Copyright (c) 1981, 1988 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. Neither the name of the University nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1981, 1988 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)rmail.c 4.15 (Berkeley) 5/31/90";
- #endif /* not lint */
-
- /*
- * RMAIL -- UUCP mail server.
- *
- * This program reads the >From ... remote from ... lines that
- * UUCP is so fond of and turns them into something reasonable.
- * It calls sendmail giving it a -f option built from these lines.
- */
-
- #include <sysexits.h>
- #include <sys/types.h>
- #include <sys/file.h>
- #include <sys/stat.h>
- #include <stdio.h>
- #include <paths.h>
-
- typedef char bool;
- #define TRUE 1
- #define FALSE 0
-
- extern char *index();
- extern char *rindex();
-
- char *Domain = "UUCP"; /* Default "Domain" */
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- char lbuf[1024]; /* one line of the message */
- char from[512]; /* accumulated path of sender */
- char ufrom[512]; /* user on remote system */
- char sys[512]; /* a system in path */
- char fsys[512]; /* first system in path */
- char junk[1024]; /* scratchpad */
- char *args[100]; /* arguments to mailer command */
- register char *cp;
- register char *uf = NULL; /* ptr into ufrom */
- int i;
- long position;
- struct stat sbuf;
- #ifdef DEBUG
- bool Debug;
-
- if (argc > 1 && strcmp(argv[1], "-T") == 0) {
- Debug = TRUE;
- argc--;
- argv++;
- }
- #endif
-
- if (argc < 2) {
- fprintf(stderr, "Usage: rmail user ...\n");
- exit(EX_USAGE);
- }
- if (argc > 2 && strncmp(argv[1], "-D", 2) == 0) {
- Domain = &argv[1][2];
- argc -= 2;
- argv += 2;
- }
- from[0] = '\0';
- fsys[0] = '\0';
- (void) strcpy(ufrom, _PATH_DEVNULL);
-
- for (position = 0;; position = ftell(stdin)) {
- if (fgets(lbuf, sizeof lbuf, stdin) == NULL)
- exit(EX_DATAERR);
- if (strncmp(lbuf, "From ", 5) != 0 &&
- strncmp(lbuf, ">From ", 6) != 0)
- break;
- (void) sscanf(lbuf, "%s %s", junk, ufrom);
- cp = lbuf;
- uf = ufrom;
- for (;;) {
- cp = index(cp + 1, 'r');
- if (cp == NULL) {
- register char *p = rindex(uf, '!');
-
- if (p != NULL) {
- *p = '\0';
- (void) strcpy(sys, uf);
- uf = p + 1;
- break;
- }
- (void) strcpy(sys, "");
- break; /* no "remote from" found */
- }
- #ifdef DEBUG
- if (Debug)
- printf("cp='%s'\n", cp);
- #endif
- if (strncmp(cp, "remote from ", 12) == 0)
- break;
- }
- if (cp != NULL)
- (void) sscanf(cp, "remote from %s", sys);
- if (fsys[0] == '\0')
- (void) strcpy(fsys, sys);
- if (sys[0]) {
- (void) strcat(from, sys);
- (void) strcat(from, "!");
- }
- #ifdef DEBUG
- if (Debug)
- printf("ufrom='%s', sys='%s', from now '%s'\n", uf, sys, from);
- #endif
- }
- if (uf == NULL) { /* No From line was provided */
- fprintf(stderr, "No From line in rmail\n");
- exit(EX_DATAERR);
- }
- (void) strcat(from, uf);
- (void) fstat(0, &sbuf);
- (void) lseek(0, position, L_SET);
-
- /*
- * Now we rebuild the argument list and chain to sendmail. Note that
- * the above lseek might fail on irregular files, but we check for
- * that case below.
- */
- i = 0;
- args[i++] = _PATH_SENDMAIL;
- args[i++] = "-oee"; /* no errors, just status */
- args[i++] = "-odq"; /* queue it, don't try to deliver */
- args[i++] = "-oi"; /* ignore '.' on a line by itself */
- if (fsys[0] != '\0') { /* set sender's host name */
- static char junk2[512];
-
- if (index(fsys, '.') == NULL) {
- (void) strcat(fsys, ".");
- (void) strcat(fsys, Domain);
- }
- (void) sprintf(junk2, "-oMs%s", fsys);
- args[i++] = junk2;
- }
- /* set protocol used */
- (void) sprintf(junk, "-oMr%s", Domain);
- args[i++] = junk;
- if (from[0] != '\0') { /* set name of ``from'' person */
- static char junk2[512];
-
- (void) sprintf(junk2, "-f%s", from);
- args[i++] = junk2;
- }
- for (; *++argv != NULL; i++) {
- /*
- * don't copy arguments beginning with - as they will
- * be passed to sendmail and could be interpreted as flags
- * should be fixed in sendmail by using getopt(3), and
- * just passing "--" before regular args.
- */
- if (**argv != '-')
- args[i] = *argv;
- }
- args[i] = NULL;
- #ifdef DEBUG
- if (Debug) {
- printf("Command:");
- for (i = 0; args[i]; i++)
- printf(" %s", args[i]);
- printf("\n");
- }
- #endif
- if ((sbuf.st_mode & S_IFMT) != S_IFREG) {
- /*
- * If we were not called with standard input on a regular
- * file, then we have to fork another process to send the
- * first line down the pipe.
- */
- int pipefd[2];
- #ifdef DEBUG
- if (Debug)
- printf("Not a regular file!\n");
- #endif
- if (pipe(pipefd) < 0)
- exit(EX_OSERR);
- if (fork() == 0) {
- /*
- * Child: send the message down the pipe.
- */
- FILE *out;
-
- out = fdopen(pipefd[1], "w");
- close(pipefd[0]);
- fputs(lbuf, out);
- while (fgets(lbuf, sizeof lbuf, stdin))
- fputs(lbuf, out);
- (void) fclose(out);
- exit(EX_OK);
- }
- /*
- * Parent: call sendmail with pipe as standard input
- */
- close(pipefd[1]);
- dup2(pipefd[0], 0);
- }
- execv(_PATH_SENDMAIL, args);
- fprintf(stderr, "Exec of %s failed!\n", _PATH_SENDMAIL);
- exit(EX_OSERR);
- }
-