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Annotation of researchv10no/cmd/netnews/src/recmail.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * recmail: read a mail message on stdin, grab all addresses in To and Cc
        !             3:  * lines, and pass the full message to all addressees.  This is useful to
        !             4:  * send the output of a recently edited mail message (with headers edited too).
        !             5:  * It is similar to sendmail -t, but only assumes /bin/mail.
        !             6:  */
        !             7: static char *sccsid = "@(#)recmail.c   1.2     3/30/83";
        !             8: 
        !             9: #include <stdio.h>
        !            10: #include <ctype.h>
        !            11: 
        !            12: #define MAXRECIPS 100
        !            13: char *recips[MAXRECIPS];
        !            14: int nrecips = 0;
        !            15: 
        !            16: main(argc, argv)
        !            17: char **argv;
        !            18: {
        !            19:        FILE *fd;
        !            20:        char *tmpf;
        !            21:        char linebuf[1024];
        !            22:        char *mailer = "mail";  /* /bin/mail */
        !            23:        int i, pid, wpid;
        !            24:        int exstat;
        !            25:        char *mypath;
        !            26:        char *mktemp(), *getenv();
        !            27: 
        !            28:        tmpf = mktemp("/tmp/rmXXXXXX");
        !            29:        fd = fopen(tmpf, "w");
        !            30: 
        !            31:        while (fgets(linebuf, sizeof linebuf, stdin) != NULL) {
        !            32:                fputs(linebuf, fd);
        !            33:                if (strncmp(linebuf, "To: ", 4) == 0 ||
        !            34:                    strncmp(linebuf, "to: ", 4) == 0 ||
        !            35:                    strncmp(linebuf, "TO: ", 4) == 0 ||
        !            36:                    strncmp(linebuf, "Cc: ", 4) == 0 ||
        !            37:                    strncmp(linebuf, "cc: ", 4) == 0 ||
        !            38:                    strncmp(linebuf, "CC: ", 4) == 0)
        !            39:                        addrecips(linebuf+4);
        !            40:        }
        !            41:        fclose(fd);
        !            42: 
        !            43:        /*
        !            44:         * Force the path to only consider /bin and /usr/bin, since
        !            45:         * that's the version of mail we want (not /usr/ucb/mail)
        !            46:         */
        !            47:        mypath = getenv("PATH");
        !            48:        if (mypath)
        !            49:                strcpy(mypath, "/bin:/usr/bin");
        !            50: 
        !            51:        /*
        !            52:         * We send the copies out separately, because of a bug in
        !            53:         * USG's /bin/mail which will generate ANOTHER To: line,
        !            54:         * even though we already have one, if there are at least
        !            55:         * two recipients.
        !            56:         */
        !            57:        for (i=0; i<nrecips; i++) {
        !            58:                /*
        !            59:                 * mail recips[i] < tmpf
        !            60:                 */
        !            61:                while ((pid = fork()) == -1) {
        !            62:                        fprintf(stderr, "fork failed, waiting...\r\n");
        !            63:                        sleep(60);
        !            64:                }
        !            65:                if (pid == 0) {
        !            66:                        close(0);
        !            67:                        open(tmpf, 0);
        !            68:                        execlp("mail", "mail", recips[i], 0);
        !            69:                        perror("mail");
        !            70:                        exit(1);
        !            71:                }
        !            72:                while ((wpid = wait(&exstat)) >= 0 && wpid != pid)
        !            73:                        ;
        !            74:        }
        !            75: }
        !            76: 
        !            77: #define isok(c) (isprint(c) && (c) != ' ' && c != ',')
        !            78: addrecips(line)
        !            79: char *line;
        !            80: {
        !            81:        char *front, *back, *tail;
        !            82:        char *malloc();
        !            83: 
        !            84:        tail = line + strlen(line);
        !            85:        for (front=line; front < tail; ) {
        !            86:                while (!isok(*front) && front < tail)
        !            87:                        front++;
        !            88:                for (back=front; isok(*back); back++)
        !            89:                        ;
        !            90:                *back=0;
        !            91:                recips[nrecips] = malloc(strlen(front) + 1);
        !            92:                strcpy(recips[nrecips], front);
        !            93:                nrecips++;
        !            94:                front = back+1;
        !            95:        }
        !            96: }

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