Annotation of 40BSD/cmd/berknet/netmail.c, revision 1.1.1.1

1.1       root        1: /*
                      2: 
                      3:  netmail [-c] [-l ...] [-p ...] [-f] [-n] [-q] ([mach] | [mach:username])
                      4: 
                      5:    Read mail on remote machine "mach"
                      6:    Sends a command to the remote machine to "mail" the mail
                      7:    to this machine.
                      8: 
                      9:    If the -c option is specified, this command is a mail check command,
                     10:    and in this mode it logs into the remote machine as "network"
                     11:    and determines if mach:username has mail.
                     12:    It writes/mails a message to that effect.
                     13:    This variant is intended to be used in .login files, silently
                     14:    checking if you have mail on another machine.
                     15: 
                     16:    Must duplicate effort that will be redone by the net command-
                     17:    the calls to commandfile and promptlogin are necessary
                     18:    to get a value for the login name to send to the prmail
                     19:    command on the other machine.
                     20:    May read the passwd file:
                     21:        1. Commandfile calls getenv(HOME) to get the home directory.
                     22:           If not easily reached,....
                     23:        2. SnCurrent() calls getlogin(). If no entry in utmp file,
                     24:           will read passwd file.
                     25:  */
                     26: # include "defs.h"
                     27: 
                     28: /* global variables */
                     29: struct userinfo status;
                     30: 
                     31: main(argc,argv)
                     32:   char **argv; {
                     33:        char *s;
                     34:        char machparm[BUFSIZ], fromaddress[BUFSIZ], fMailCheck = 0;
                     35:        char rcmd[BUFSIZ], fquiet = 0;
                     36:        debugflg = DBV;
                     37:        strcpy(rcmd,"netmail");
                     38:        argc--; argv++;
                     39:        while(argc > 0 && argv[0][0] == '-'){
                     40:                switch(argv[0][1]){
                     41:                case 'b':       status.nonotify++; appss(rcmd,argv[0]); break;
                     42:                case 'c':       fMailCheck++;      appss(rcmd,argv[0]); break;
                     43:                case 'f':       status.force++;    appss(rcmd,argv[0]); break;
                     44:                case 'l':       harg(status.login,&argc,&argv); break;
                     45:                case 'n':       status.nowrite++;  appss(rcmd,argv[0]); break;
                     46:                case 'p':       harg(status.mpasswd,&argc,&argv); break;
                     47:                case 'q':       fquiet = 1;        appss(rcmd,argv[0]); break;
                     48:                default:
                     49:                        fprintf(stderr,
                     50:        "Usage: netmail [-l login] [-p password] [-c] [-f] [-n] [-q] [mach]\n");
                     51:                        exit(EX_USAGE);
                     52:                }
                     53:                argc--, argv++;
                     54:                }
                     55:        if(argc > 0){
                     56:                if(FMemberSCh(argv[0],':'))
                     57:                        remote = MchSFromAddr(status.login,argv[0]);
                     58:                else
                     59:                        remote = lookup(argv[0]);
                     60:                if(remote == 0){
                     61:                        fprintf(stderr,"Unknown machine %s\n",argv[0]);
                     62:                        exit(EX_NOHOST);
                     63:                }
                     64:                appss(rcmd,argv[0]);
                     65:        }
                     66: 
                     67:        /* read the .netrc file to get a value for remote */
                     68:        /* will get status.login, passwd, and force for fetch variant */
                     69:        commandfile();
                     70:        if(remote == 0)remote = getremote(local);
                     71:        sprintf(machparm,"-m%c",remote);
                     72:                
                     73: 
                     74:        if(remote == local){
                     75:                fprintf(stderr,
                     76:                "Use the mail command to read your mail on this machine.\n");
                     77:                exit(EX_USAGE);
                     78:        }
                     79: 
                     80: /* read pw file, get local addr to send to prmail, store in status.localname */
                     81:        s = SnFromUid(getuid());
                     82:        if(s == NULL){
                     83:                fprintf(stderr,"Unknown local user\n");
                     84:                exit(EX_OSFILE);
                     85:        }
                     86:        strcpy(status.localname,s);
                     87:        sprintf(fromaddress,"%s:%s",longname(local),s);
                     88: 
                     89:        /* mail check variant */
                     90:        if(fMailCheck){
                     91:                if(status.login[0] == 0){
                     92:                        fprintf(stderr,
                     93:                        "Must supply a remote user name for mail check.\n");
                     94:                        exit(EX_USAGE);
                     95:                }
                     96:                /* send mail check over, no passwd needed */
                     97:                if(fquiet)
                     98:                        mexecl(netcmd,"net","-q",machparm,"-l","network",
                     99:                        "-c",rcmd,
                    100:                        PRMAIL,"-c","-l",status.login,"-f",fromaddress,0);
                    101:                else
                    102:                        mexecl(netcmd,"net","-q",machparm,"-l","network",
                    103:                        "-c",rcmd,
                    104:                        PRMAIL,"-c","-l",status.login,"-f",fromaddress,"-k",0);
                    105:                perror(netcmd);
                    106:                fprintf(stderr,"Network is down\n");
                    107:                exit(EX_UNAVAILABLE);
                    108:        }
                    109: 
                    110:        /* mail forward variant */
                    111: 
                    112:        /* 
                    113:           get name to send as parameter to prmail.
                    114:           required for multiple login names with the same uid's
                    115:           stored in status.login
                    116:        */
                    117:        envloginpasswd(remote,status.login,status.mpasswd); /* look in env */
                    118:        promptlogin(remote);    /* prompt for name, passwd explicitely */
                    119: 
                    120:        if(fquiet)
                    121:                kexecl(netcmd,"net","-q",machparm,"-c",rcmd,PRMAIL,"-l",
                    122:                        status.login,"-f",fromaddress,"-r",0);
                    123:        else
                    124:                kexecl(netcmd,"net","-q",machparm,"-c",rcmd,PRMAIL,"-l",
                    125:                        status.login,"-f",fromaddress,"-r","-k",0);
                    126:        perror(netcmd);
                    127:        fprintf(stderr,"Network is down\n");
                    128:        exit(EX_UNAVAILABLE);
                    129:        }
                    130: /*
                    131:        append string sfrom to end of string sto, preceded by blank */
                    132: appss(sto,sfrom)
                    133:        register char *sto, *sfrom;
                    134: {
                    135:        strcat(sto," ");
                    136:        strcat(sto,sfrom);
                    137: }

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