551 lines
11 KiB
C
551 lines
11 KiB
C
#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include <thread.h>
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#include <plumb.h>
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#include <ctype.h>
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#include "dat.h"
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char *maildir = "/mail/fs/"; /* mountpoint of mail file system */
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char *mailtermdir = "/mnt/term/mail/fs/"; /* alternate mountpoint */
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char *mboxname = "mbox"; /* mailboxdir/mboxname is mail spool file */
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char *mailboxdir = nil; /* nil == /mail/box/$user */
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char *fsname; /* filesystem for mailboxdir/mboxname is at maildir/fsname */
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char *user;
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char *outgoing;
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Window *wbox;
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Message mbox;
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Message replies;
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char *home;
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int plumbsendfd;
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int plumbseemailfd;
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int plumbshowmailfd;
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int plumbsendmailfd;
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Channel *cplumb;
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Channel *cplumbshow;
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Channel *cplumbsend;
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int wctlfd;
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void mainctl(void*);
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void plumbproc(void*);
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void plumbshowproc(void*);
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void plumbsendproc(void*);
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void plumbthread(void);
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void plumbshowthread(void*);
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void plumbsendthread(void*);
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int shortmenu;
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void
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usage(void)
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{
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fprint(2, "usage: Mail [-sS] [-o outgoing] [mailboxname [directoryname]]\n");
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threadexitsall("usage");
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}
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void
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removeupasfs(void)
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{
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char buf[256];
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if(strcmp(mboxname, "mbox") == 0)
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return;
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snprint(buf, sizeof buf, "close %s", mboxname);
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write(mbox.ctlfd, buf, strlen(buf));
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}
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int
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ismaildir(char *s)
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{
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char buf[256];
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Dir *d;
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int ret;
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snprint(buf, sizeof buf, "%s%s", maildir, s);
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d = dirstat(buf);
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if(d == nil)
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return 0;
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ret = d->qid.type & QTDIR;
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free(d);
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return ret;
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}
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void
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threadmain(int argc, char *argv[])
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{
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char *s, *name;
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char err[ERRMAX], *cmd;
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int i, newdir;
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Fmt fmt;
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doquote = needsrcquote;
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quotefmtinstall();
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/* open these early so we won't miss notification of new mail messages while we read mbox */
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plumbsendfd = plumbopen("send", OWRITE|OCEXEC);
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plumbseemailfd = plumbopen("seemail", OREAD|OCEXEC);
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plumbshowmailfd = plumbopen("showmail", OREAD|OCEXEC);
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shortmenu = 0;
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ARGBEGIN{
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case 's':
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shortmenu = 1;
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break;
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case 'S':
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shortmenu = 2;
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break;
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case 'o':
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outgoing = EARGF(usage());
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break;
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case 'm':
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smprint(maildir, "%s/", EARGF(usage()));
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break;
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default:
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usage();
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}ARGEND
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name = "mbox";
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/* bind the terminal /mail/fs directory over the local one */
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if(access(maildir, 0)<0 && access(mailtermdir, 0)==0)
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bind(mailtermdir, maildir, MAFTER);
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newdir = 1;
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if(argc > 0){
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i = strlen(argv[0]);
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if(argc>2 || i==0)
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usage();
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/* see if the name is that of an existing /mail/fs directory */
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if(argc==1 && strchr(argv[0], '/')==0 && ismaildir(argv[0])){
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name = argv[0];
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mboxname = eappend(estrdup(maildir), "", name);
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newdir = 0;
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}else{
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if(argv[0][i-1] == '/')
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argv[0][i-1] = '\0';
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s = strrchr(argv[0], '/');
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if(s == nil)
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mboxname = estrdup(argv[0]);
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else{
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*s++ = '\0';
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if(*s == '\0')
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usage();
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mailboxdir = argv[0];
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mboxname = estrdup(s);
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}
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if(argc > 1)
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name = argv[1];
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else
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name = mboxname;
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}
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}
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user = getenv("user");
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if(user == nil)
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user = "none";
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if(mailboxdir == nil)
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mailboxdir = estrstrdup("/mail/box/", user);
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if(outgoing == nil)
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outgoing = estrstrdup(mailboxdir, "/outgoing");
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s = estrstrdup(maildir, "ctl");
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mbox.ctlfd = open(s, ORDWR|OCEXEC);
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if(mbox.ctlfd < 0)
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error("can't open %s: %r", s);
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fsname = estrdup(name);
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if(newdir && argc > 0){
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s = emalloc(5+strlen(mailboxdir)+strlen(mboxname)+strlen(name)+10+1);
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for(i=0; i<10; i++){
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sprint(s, "open %s/%s %s", mailboxdir, mboxname, fsname);
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if(write(mbox.ctlfd, s, strlen(s)) >= 0)
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break;
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err[0] = '\0';
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errstr(err, sizeof err);
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if(strstr(err, "mbox name in use") == nil)
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error("can't create directory %s for mail: %s", name, err);
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free(fsname);
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fsname = emalloc(strlen(name)+10);
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sprint(fsname, "%s-%d", name, i);
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}
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if(i == 10)
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error("can't open %s/%s: %r", mailboxdir, mboxname);
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free(s);
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}
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s = estrstrdup(fsname, "/");
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mbox.name = estrstrdup(maildir, s);
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mbox.level= 0;
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readmbox(&mbox, maildir, s);
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home = getenv("home");
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if(home == nil)
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home = "/";
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wbox = newwindow();
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winname(wbox, mbox.name);
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wintagwrite(wbox, "Put Mail Delmesg ", 3+1+4+1+7+1);
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threadcreate(mainctl, wbox, STACK);
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fmtstrinit(&fmt);
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fmtprint(&fmt, "Mail");
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if(shortmenu)
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fmtprint(&fmt, " -%c", "sS"[shortmenu-1]);
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if(outgoing)
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fmtprint(&fmt, " -o %s", outgoing);
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fmtprint(&fmt, " %s", name);
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cmd = fmtstrflush(&fmt);
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if(cmd == nil)
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sysfatal("out of memory");
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winsetdump(wbox, "/acme/mail", cmd);
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mbox.w = wbox;
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mesgmenu(wbox, &mbox);
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winclean(wbox);
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wctlfd = open("/dev/wctl", OWRITE|OCEXEC); /* for acme window */
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cplumb = chancreate(sizeof(Plumbmsg*), 0);
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cplumbshow = chancreate(sizeof(Plumbmsg*), 0);
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if(strcmp(name, "mbox") == 0){
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/*
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* Avoid creating multiple windows to send mail by only accepting
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* sendmail plumb messages if we're reading the main mailbox.
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*/
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plumbsendmailfd = plumbopen("sendmail", OREAD|OCEXEC);
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cplumbsend = chancreate(sizeof(Plumbmsg*), 0);
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proccreate(plumbsendproc, nil, STACK);
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threadcreate(plumbsendthread, nil, STACK);
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}
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/* start plumb reader as separate proc ... */
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proccreate(plumbproc, nil, STACK);
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proccreate(plumbshowproc, nil, STACK);
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threadcreate(plumbshowthread, nil, STACK);
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/* ... and use this thread to read the messages */
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plumbthread();
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}
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void
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plumbproc(void*)
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{
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Plumbmsg *m;
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threadsetname("plumbproc");
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for(;;){
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m = plumbrecv(plumbseemailfd);
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sendp(cplumb, m);
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if(m == nil)
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threadexits(nil);
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}
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}
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void
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plumbshowproc(void*)
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{
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Plumbmsg *m;
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threadsetname("plumbshowproc");
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for(;;){
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m = plumbrecv(plumbshowmailfd);
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sendp(cplumbshow, m);
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if(m == nil)
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threadexits(nil);
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}
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}
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void
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plumbsendproc(void*)
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{
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Plumbmsg *m;
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threadsetname("plumbsendproc");
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for(;;){
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m = plumbrecv(plumbsendmailfd);
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sendp(cplumbsend, m);
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if(m == nil)
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threadexits(nil);
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}
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}
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void
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newmesg(char *name, char *digest)
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{
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Dir *d;
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if(strncmp(name, mbox.name, strlen(mbox.name)) != 0)
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return; /* message is about another mailbox */
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if(mesglookupfile(&mbox, name, digest) != nil)
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return;
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d = dirstat(name);
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if(d == nil)
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return;
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if(mesgadd(&mbox, mbox.name, d, digest))
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mesgmenunew(wbox, &mbox);
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free(d);
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}
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void
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showmesg(char *name, char *digest)
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{
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char *n;
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if(strncmp(name, mbox.name, strlen(mbox.name)) != 0)
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return; /* message is about another mailbox */
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n = estrdup(name+strlen(mbox.name));
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if(n[strlen(n)-1] != '/')
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n = egrow(n, "/", nil);
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mesgopen(&mbox, mbox.name, name+strlen(mbox.name), nil, 1, digest);
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free(n);
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}
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void
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delmesg(char *name, char *digest, int dodel)
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{
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Message *m;
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m = mesglookupfile(&mbox, name, digest);
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if(m != nil){
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mesgmenumarkdel(wbox, &mbox, m, 0);
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if(dodel)
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m->writebackdel = 1;
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}
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}
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void
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plumbthread(void)
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{
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Plumbmsg *m;
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Plumbattr *a;
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char *type, *digest;
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threadsetname("plumbthread");
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while((m = recvp(cplumb)) != nil){
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a = m->attr;
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digest = plumblookup(a, "digest");
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type = plumblookup(a, "mailtype");
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if(type == nil)
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fprint(2, "Mail: plumb message with no mailtype attribute\n");
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else if(strcmp(type, "new") == 0)
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newmesg(m->data, digest);
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else if(strcmp(type, "delete") == 0)
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delmesg(m->data, digest, 0);
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else
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fprint(2, "Mail: unknown plumb attribute %s\n", type);
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plumbfree(m);
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}
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threadexits(nil);
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}
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void
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plumbshowthread(void*)
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{
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Plumbmsg *m;
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threadsetname("plumbshowthread");
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while((m = recvp(cplumbshow)) != nil){
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showmesg(m->data, plumblookup(m->attr, "digest"));
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plumbfree(m);
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}
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threadexits(nil);
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}
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void
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plumbsendthread(void*)
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{
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Plumbmsg *m;
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threadsetname("plumbsendthread");
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while((m = recvp(cplumbsend)) != nil){
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mkreply(nil, "Mail", m->data, m->attr, nil);
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plumbfree(m);
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}
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threadexits(nil);
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}
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int
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mboxcommand(Window *w, char *s)
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{
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char *args[10], **targs;
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Message *m, *next;
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int ok, nargs, i, j;
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char buf[128];
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nargs = tokenize(s, args, nelem(args));
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if(nargs == 0)
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return 0;
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if(strcmp(args[0], "Mail") == 0){
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if(nargs == 1)
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mkreply(nil, "Mail", "", nil, nil);
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else
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mkreply(nil, "Mail", args[1], nil, nil);
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return 1;
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}
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if(strcmp(s, "Del") == 0){
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if(mbox.dirty){
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mbox.dirty = 0;
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fprint(2, "mail: mailbox not written\n");
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return 1;
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}
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ok = 1;
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for(m=mbox.head; m!=nil; m=next){
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next = m->next;
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if(m->w){
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if(windel(m->w, 0))
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m->w = nil;
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else
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ok = 0;
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}
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}
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for(m=replies.head; m!=nil; m=next){
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next = m->next;
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if(m->w){
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if(windel(m->w, 0))
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m->w = nil;
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else
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ok = 0;
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}
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}
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if(ok){
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windel(w, 1);
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removeupasfs();
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threadexitsall(nil);
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}
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return 1;
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}
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if(strcmp(s, "Put") == 0){
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rewritembox(wbox, &mbox);
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return 1;
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}
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if(strcmp(s, "Delmesg") == 0){
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if(nargs > 1){
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for(i=1; i<nargs; i++){
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snprint(buf, sizeof buf, "%s%s", mbox.name, args[i]);
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delmesg(buf, nil, 1);
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}
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}
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s = winselection(w);
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if(s == nil)
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return 1;
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nargs = 1;
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for(i=0; s[i]; i++)
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if(s[i] == '\n')
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nargs++;
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targs = emalloc(nargs*sizeof(char*)); /* could be too many for a local array */
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nargs = getfields(s, targs, nargs, 1, "\n");
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for(i=0; i<nargs; i++){
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if(!isdigit(targs[i][0]))
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continue;
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j = atoi(targs[i]); /* easy way to parse the number! */
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if(j == 0)
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continue;
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snprint(buf, sizeof buf, "%s%d", mbox.name, j);
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delmesg(buf, nil, 1);
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}
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free(s);
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free(targs);
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return 1;
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}
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return 0;
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}
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void
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mainctl(void *v)
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{
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Window *w;
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Event *e, *e2, *eq, *ea;
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int na, nopen;
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char *s, *t, *buf;
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w = v;
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proccreate(wineventproc, w, STACK);
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for(;;){
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e = recvp(w->cevent);
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switch(e->c1){
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default:
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Unknown:
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print("unknown message %c%c\n", e->c1, e->c2);
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break;
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case 'E': /* write to body; can't affect us */
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break;
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case 'F': /* generated by our actions; ignore */
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break;
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case 'K': /* type away; we don't care */
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break;
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case 'M':
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switch(e->c2){
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case 'x':
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case 'X':
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ea = nil;
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e2 = nil;
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if(e->flag & 2)
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e2 = recvp(w->cevent);
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if(e->flag & 8){
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ea = recvp(w->cevent);
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na = ea->nb;
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recvp(w->cevent);
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}else
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na = 0;
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s = e->b;
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/* if it's a known command, do it */
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if((e->flag&2) && e->nb==0)
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s = e2->b;
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if(na){
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t = emalloc(strlen(s)+1+na+1);
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sprint(t, "%s %s", s, ea->b);
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s = t;
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}
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/* if it's a long message, it can't be for us anyway */
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if(!mboxcommand(w, s)) /* send it back */
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winwriteevent(w, e);
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if(na)
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free(s);
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break;
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case 'l':
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case 'L':
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buf = nil;
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eq = e;
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if(e->flag & 2){
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e2 = recvp(w->cevent);
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eq = e2;
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}
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s = eq->b;
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if(eq->q1>eq->q0 && eq->nb==0){
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buf = emalloc((eq->q1-eq->q0)*UTFmax+1);
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winread(w, eq->q0, eq->q1, buf);
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s = buf;
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}
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nopen = 0;
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do{
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/* skip 'deleted' string if present' */
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if(strncmp(s, deleted, strlen(deleted)) == 0)
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s += strlen(deleted);
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/* skip mail box name if present */
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if(strncmp(s, mbox.name, strlen(mbox.name)) == 0)
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s += strlen(mbox.name);
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nopen += mesgopen(&mbox, mbox.name, s, nil, 0, nil);
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while(*s!='\0' && *s++!='\n')
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;
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}while(*s);
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if(nopen == 0) /* send it back */
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winwriteevent(w, e);
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free(buf);
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break;
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case 'I': /* modify away; we don't care */
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case 'D':
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case 'd':
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case 'i':
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break;
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default:
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goto Unknown;
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}
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}
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}
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}
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