ref: 87d7a3c8750ca4f61c2cae5269b3eda04cce7e6c
dir: /acme/mail/src/mail.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <thread.h>
#include <plumb.h>
#include <ctype.h>
#include "dat.h"
char *maildir = "/mail/fs/"; /* mountpoint of mail file system */
char *mailtermdir = "/mnt/term/mail/fs/"; /* alternate mountpoint */
char *mboxname = "mbox"; /* mailboxdir/mboxname is mail spool file */
char *mailboxdir = nil; /* nil == /mail/box/$user */
char *fsname; /* filesystem for mailboxdir/mboxname is at maildir/fsname */
char *user;
char *outgoing;
Window *wbox;
Message mbox;
Message replies;
char *home;
int plumbsendfd;
int plumbseemailfd;
int plumbshowmailfd;
int plumbsendmailfd;
Channel *cplumb;
Channel *cplumbshow;
Channel *cplumbsend;
int wctlfd;
void mainctl(void*);
void plumbproc(void*);
void plumbshowproc(void*);
void plumbsendproc(void*);
void plumbthread(void);
void plumbshowthread(void*);
void plumbsendthread(void*);
int shortmenu;
void
usage(void)
{
fprint(2, "usage: Mail [-sS] [-o outgoing] [mailboxname [directoryname]]\n");
threadexitsall("usage");
}
void
removeupasfs(void)
{
char buf[256];
if(strcmp(mboxname, "mbox") == 0)
return;
snprint(buf, sizeof buf, "close %s", mboxname);
write(mbox.ctlfd, buf, strlen(buf));
}
int
ismaildir(char *s)
{
char buf[256];
Dir *d;
int ret;
snprint(buf, sizeof buf, "%s%s", maildir, s);
d = dirstat(buf);
if(d == nil)
return 0;
ret = d->qid.type & QTDIR;
free(d);
return ret;
}
void
threadmain(int argc, char *argv[])
{
char *s, *name;
char err[ERRMAX], *cmd;
int i, newdir;
Fmt fmt;
doquote = needsrcquote;
quotefmtinstall();
/* open these early so we won't miss notification of new mail messages while we read mbox */
plumbsendfd = plumbopen("send", OWRITE|OCEXEC);
plumbseemailfd = plumbopen("seemail", OREAD|OCEXEC);
plumbshowmailfd = plumbopen("showmail", OREAD|OCEXEC);
shortmenu = 0;
ARGBEGIN{
case 's':
shortmenu = 1;
break;
case 'S':
shortmenu = 2;
break;
case 'o':
outgoing = EARGF(usage());
break;
case 'm':
smprint(maildir, "%s/", EARGF(usage()));
break;
default:
usage();
}ARGEND
name = "mbox";
/* bind the terminal /mail/fs directory over the local one */
if(access(maildir, 0)<0 && access(mailtermdir, 0)==0)
bind(mailtermdir, maildir, MAFTER);
newdir = 1;
if(argc > 0){
i = strlen(argv[0]);
if(argc>2 || i==0)
usage();
/* see if the name is that of an existing /mail/fs directory */
if(argc==1 && strchr(argv[0], '/')==0 && ismaildir(argv[0])){
name = argv[0];
mboxname = eappend(estrdup(maildir), "", name);
newdir = 0;
}else{
if(argv[0][i-1] == '/')
argv[0][i-1] = '\0';
s = strrchr(argv[0], '/');
if(s == nil)
mboxname = estrdup(argv[0]);
else{
*s++ = '\0';
if(*s == '\0')
usage();
mailboxdir = argv[0];
mboxname = estrdup(s);
}
if(argc > 1)
name = argv[1];
else
name = mboxname;
}
}
user = getenv("user");
if(user == nil)
user = "none";
if(mailboxdir == nil)
mailboxdir = estrstrdup("/mail/box/", user);
if(outgoing == nil)
outgoing = estrstrdup(mailboxdir, "/outgoing");
s = estrstrdup(maildir, "ctl");
mbox.ctlfd = open(s, ORDWR|OCEXEC);
if(mbox.ctlfd < 0)
error("can't open %s: %r", s);
fsname = estrdup(name);
if(newdir && argc > 0){
s = emalloc(5+strlen(mailboxdir)+strlen(mboxname)+strlen(name)+10+1);
for(i=0; i<10; i++){
sprint(s, "open %s/%s %s", mailboxdir, mboxname, fsname);
if(write(mbox.ctlfd, s, strlen(s)) >= 0)
break;
err[0] = '\0';
errstr(err, sizeof err);
if(strstr(err, "mbox name in use") == nil)
error("can't create directory %s for mail: %s", name, err);
free(fsname);
fsname = emalloc(strlen(name)+10);
sprint(fsname, "%s-%d", name, i);
}
if(i == 10)
error("can't open %s/%s: %r", mailboxdir, mboxname);
free(s);
}
s = estrstrdup(fsname, "/");
mbox.name = estrstrdup(maildir, s);
mbox.level= 0;
readmbox(&mbox, maildir, s);
home = getenv("home");
if(home == nil)
home = "/";
wbox = newwindow();
winname(wbox, mbox.name);
wintagwrite(wbox, "Put Mail Delmesg ", 3+1+4+1+7+1);
threadcreate(mainctl, wbox, STACK);
fmtstrinit(&fmt);
fmtprint(&fmt, "Mail");
if(shortmenu)
fmtprint(&fmt, " -%c", "sS"[shortmenu-1]);
if(outgoing)
fmtprint(&fmt, " -o %s", outgoing);
fmtprint(&fmt, " %s", name);
cmd = fmtstrflush(&fmt);
if(cmd == nil)
sysfatal("out of memory");
winsetdump(wbox, "/acme/mail", cmd);
mbox.w = wbox;
mesgmenu(wbox, &mbox);
winclean(wbox);
wctlfd = open("/dev/wctl", OWRITE|OCEXEC); /* for acme window */
cplumb = chancreate(sizeof(Plumbmsg*), 0);
cplumbshow = chancreate(sizeof(Plumbmsg*), 0);
if(strcmp(name, "mbox") == 0){
/*
* Avoid creating multiple windows to send mail by only accepting
* sendmail plumb messages if we're reading the main mailbox.
*/
plumbsendmailfd = plumbopen("sendmail", OREAD|OCEXEC);
cplumbsend = chancreate(sizeof(Plumbmsg*), 0);
proccreate(plumbsendproc, nil, STACK);
threadcreate(plumbsendthread, nil, STACK);
}
/* start plumb reader as separate proc ... */
proccreate(plumbproc, nil, STACK);
proccreate(plumbshowproc, nil, STACK);
threadcreate(plumbshowthread, nil, STACK);
/* ... and use this thread to read the messages */
plumbthread();
}
void
plumbproc(void*)
{
Plumbmsg *m;
threadsetname("plumbproc");
for(;;){
m = plumbrecv(plumbseemailfd);
sendp(cplumb, m);
if(m == nil)
threadexits(nil);
}
}
void
plumbshowproc(void*)
{
Plumbmsg *m;
threadsetname("plumbshowproc");
for(;;){
m = plumbrecv(plumbshowmailfd);
sendp(cplumbshow, m);
if(m == nil)
threadexits(nil);
}
}
void
plumbsendproc(void*)
{
Plumbmsg *m;
threadsetname("plumbsendproc");
for(;;){
m = plumbrecv(plumbsendmailfd);
sendp(cplumbsend, m);
if(m == nil)
threadexits(nil);
}
}
void
newmesg(char *name, char *digest)
{
Dir *d;
if(strncmp(name, mbox.name, strlen(mbox.name)) != 0)
return; /* message is about another mailbox */
if(mesglookupfile(&mbox, name, digest) != nil)
return;
d = dirstat(name);
if(d == nil)
return;
if(mesgadd(&mbox, mbox.name, d, digest))
mesgmenunew(wbox, &mbox);
free(d);
}
void
showmesg(char *name, char *digest)
{
char *n;
if(strncmp(name, mbox.name, strlen(mbox.name)) != 0)
return; /* message is about another mailbox */
n = estrdup(name+strlen(mbox.name));
if(n[strlen(n)-1] != '/')
n = egrow(n, "/", nil);
mesgopen(&mbox, mbox.name, name+strlen(mbox.name), nil, 1, digest);
free(n);
}
void
delmesg(char *name, char *digest, int dodel)
{
Message *m;
m = mesglookupfile(&mbox, name, digest);
if(m != nil){
mesgmenumarkdel(wbox, &mbox, m, 0);
if(dodel)
m->writebackdel = 1;
}
}
void
plumbthread(void)
{
Plumbmsg *m;
Plumbattr *a;
char *type, *digest;
threadsetname("plumbthread");
while((m = recvp(cplumb)) != nil){
a = m->attr;
digest = plumblookup(a, "digest");
type = plumblookup(a, "mailtype");
if(type == nil)
fprint(2, "Mail: plumb message with no mailtype attribute\n");
else if(strcmp(type, "new") == 0)
newmesg(m->data, digest);
else if(strcmp(type, "delete") == 0)
delmesg(m->data, digest, 0);
else
fprint(2, "Mail: unknown plumb attribute %s\n", type);
plumbfree(m);
}
threadexits(nil);
}
void
plumbshowthread(void*)
{
Plumbmsg *m;
threadsetname("plumbshowthread");
while((m = recvp(cplumbshow)) != nil){
showmesg(m->data, plumblookup(m->attr, "digest"));
plumbfree(m);
}
threadexits(nil);
}
void
plumbsendthread(void*)
{
Plumbmsg *m;
threadsetname("plumbsendthread");
while((m = recvp(cplumbsend)) != nil){
mkreply(nil, "Mail", m->data, m->attr, nil);
plumbfree(m);
}
threadexits(nil);
}
int
mboxcommand(Window *w, char *s)
{
char *args[10], **targs;
Message *m, *next;
int ok, nargs, i, j;
char buf[128];
nargs = tokenize(s, args, nelem(args));
if(nargs == 0)
return 0;
if(strcmp(args[0], "Mail") == 0){
if(nargs == 1)
mkreply(nil, "Mail", "", nil, nil);
else
mkreply(nil, "Mail", args[1], nil, nil);
return 1;
}
if(strcmp(s, "Del") == 0){
if(mbox.dirty){
mbox.dirty = 0;
fprint(2, "mail: mailbox not written\n");
return 1;
}
ok = 1;
for(m=mbox.head; m!=nil; m=next){
next = m->next;
if(m->w){
if(windel(m->w, 0))
m->w = nil;
else
ok = 0;
}
}
for(m=replies.head; m!=nil; m=next){
next = m->next;
if(m->w){
if(windel(m->w, 0))
m->w = nil;
else
ok = 0;
}
}
if(ok){
windel(w, 1);
removeupasfs();
threadexitsall(nil);
}
return 1;
}
if(strcmp(s, "Put") == 0){
rewritembox(wbox, &mbox);
return 1;
}
if(strcmp(s, "Delmesg") == 0){
if(nargs > 1){
for(i=1; i<nargs; i++){
snprint(buf, sizeof buf, "%s%s", mbox.name, args[i]);
delmesg(buf, nil, 1);
}
}
s = winselection(w);
if(s == nil)
return 1;
nargs = 1;
for(i=0; s[i]; i++)
if(s[i] == '\n')
nargs++;
targs = emalloc(nargs*sizeof(char*)); /* could be too many for a local array */
nargs = getfields(s, targs, nargs, 1, "\n");
for(i=0; i<nargs; i++){
if(!isdigit(targs[i][0]))
continue;
j = atoi(targs[i]); /* easy way to parse the number! */
if(j == 0)
continue;
snprint(buf, sizeof buf, "%s%d", mbox.name, j);
delmesg(buf, nil, 1);
}
free(s);
free(targs);
return 1;
}
return 0;
}
void
mainctl(void *v)
{
Window *w;
Event *e, *e2, *eq, *ea;
int na, nopen;
char *s, *t, *buf;
w = v;
proccreate(wineventproc, w, STACK);
for(;;){
e = recvp(w->cevent);
switch(e->c1){
default:
Unknown:
print("unknown message %c%c\n", e->c1, e->c2);
break;
case 'E': /* write to body; can't affect us */
break;
case 'F': /* generated by our actions; ignore */
break;
case 'K': /* type away; we don't care */
break;
case 'M':
switch(e->c2){
case 'x':
case 'X':
ea = nil;
e2 = nil;
if(e->flag & 2)
e2 = recvp(w->cevent);
if(e->flag & 8){
ea = recvp(w->cevent);
na = ea->nb;
recvp(w->cevent);
}else
na = 0;
s = e->b;
/* if it's a known command, do it */
if((e->flag&2) && e->nb==0)
s = e2->b;
if(na){
t = emalloc(strlen(s)+1+na+1);
sprint(t, "%s %s", s, ea->b);
s = t;
}
/* if it's a long message, it can't be for us anyway */
if(!mboxcommand(w, s)) /* send it back */
winwriteevent(w, e);
if(na)
free(s);
break;
case 'l':
case 'L':
buf = nil;
eq = e;
if(e->flag & 2){
e2 = recvp(w->cevent);
eq = e2;
}
s = eq->b;
if(eq->q1>eq->q0 && eq->nb==0){
buf = emalloc((eq->q1-eq->q0)*UTFmax+1);
winread(w, eq->q0, eq->q1, buf);
s = buf;
}
nopen = 0;
do{
/* skip 'deleted' string if present' */
if(strncmp(s, deleted, strlen(deleted)) == 0)
s += strlen(deleted);
/* skip mail box name if present */
if(strncmp(s, mbox.name, strlen(mbox.name)) == 0)
s += strlen(mbox.name);
nopen += mesgopen(&mbox, mbox.name, s, nil, 0, nil);
while(*s!='\0' && *s++!='\n')
;
}while(*s);
if(nopen == 0) /* send it back */
winwriteevent(w, e);
free(buf);
break;
case 'I': /* modify away; we don't care */
case 'D':
case 'd':
case 'i':
break;
default:
goto Unknown;
}
}
}
}