ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /appl/wm/readmail.b/
implement WmReadmail; include "sys.m"; sys: Sys; include "draw.m"; draw: Draw; Context: import draw; include "tk.m"; tk: Tk; Toplevel: import tk; include "tkclient.m"; tkclient: Tkclient; include "dialog.m"; dialog: Dialog; include "selectfile.m"; selectfile: Selectfile; include "string.m"; str: String; include "keyring.m"; kr: Keyring; WmReadmail: module { init: fn(ctxt: ref Draw->Context, args: list of string); }; WmSendmail: module { init: fn(ctxt: ref Draw->Context, args: list of string); }; srv: Sys->Connection; main: ref Toplevel; ctxt: ref Context; nmesg: int; cmesg: int; map: array of byte; Ok, Deleted: con iota; username: string; mail_cfg := array[] of { "frame .top", "label .top.l -bitmap email.bit", "frame .top.con", "frame .top.con.b", "button .top.con.b.con -bitmap mailcon -command {send msg connect}", "bind .top.con.b.con <Enter> +{.top.status configure -text {connect/disconnect to mail server}}", "button .top.con.b.next -bitmap mailnext -command {send msg next}", "bind .top.con.b.next <Enter> +{.top.status configure -text {next message}}", "button .top.con.b.prev -bitmap mailprev -command {send msg prev}", "bind .top.con.b.prev <Enter> +{.top.status configure -text {previous message}}", "button .top.con.b.del -bitmap maildel -command {send msg dele}", "bind .top.con.b.del <Enter> +{.top.status configure -text {delete message}}", "button .top.con.b.reply -bitmap mailreply -command {send msg reply}", "bind .top.con.b.reply <Enter> +{.top.status configure -text {reply to message}}", "button .top.con.b.fwd -bitmap mailforward", "bind .top.con.b.fwd <Enter> +{.top.status configure -text {forward message}}", "button .top.con.b.hdr -bitmap mailhdr -command {send msg hdrs}", "bind .top.con.b.hdr <Enter> +{.top.status configure -text {fetch message headers}}", "button .top.con.b.save -bitmap mailsave -command {send msg save}", "bind .top.con.b.save <Enter> +{.top.status configure -text {save message}}", "pack .top.con.b.con .top.con.b.prev .top.con.b.next .top.con.b.del .top.con.b.reply .top.con.b.fwd .top.con.b.hdr .top.con.b.save -padx 2 -side left", "label .top.status -text {not connected ...} -anchor w", "pack .top.l -side left", "pack .top.con -side left -padx 10", "pack .top.con.b .top.status -in .top.con -fill x -expand 1", "frame .hdr", "scrollbar .hdr.scroll -command {.hdr.t yview}", "text .hdr.t -height 3c -yscrollcommand {.hdr.scroll set} -bg white", "frame .hdr.pad -width 2c", "pack .hdr.t -side left -fill x -expand 1", "pack .hdr.scroll -side left -fill y", "pack .hdr.pad", "frame .body", "scrollbar .body.scroll -command {.body.t yview}", "text .body.t -width 15c -height 7c -yscrollcommand {.body.scroll set} -bg white", "pack .body.t -side left -expand 1 -fill both", "pack .body.scroll -side left -fill y", "pack .top -anchor w -padx 5", "pack .hdr -fill x -anchor w -padx 5 -pady 5", "pack .body -expand 1 -fill both -padx 5 -pady 5", "pack .b -padx 5 -pady 5 -fill x", "pack propagate . 0", "update" }; con_cfg := array[] of { "frame .b", "button .b.ok -text {Connect} -command {send cmd ok}", "button .b.can -text {Cancel} -command {send cmd can}", "pack .b.ok .b.can -side left -fill x -padx 10 -pady 10 -expand 1", "frame .l", "label .l.h -text {Mail Server:} -anchor w", "label .l.u -text {User Name:} -anchor w", "label .l.s -text {Secret:} -anchor w", "pack .l.h .l.u .l.s -fill both -expand 1", "frame .e", "entry .e.h", "entry .e.u", "entry .e.s -show •", "pack .e.h .e.u .e.s -fill x", "frame .f -borderwidth 2 -relief raised", "pack .l .e -fill both -expand 1 -side left -in .f", "pack .f", "pack .b -fill x -expand 1", "bind .e.h <Key-\n> {send cmd ok}", "bind .e.u <Key-\n> {send cmd ok}", "bind .e.s <Key-\n> {send cmd ok}", "focus .e.s", }; hdr_cfg := array[] of { "scrollbar .sh -orient horizontal -command {.f.l xview}", "scrollbar .f.sv -command {.f.l yview}", "frame .f", "listbox .f.l -width 80w -height 20h -yscrollcommand { .f.sv set} -xscrollcommand { .sh set}", "pack .f.l -side left -fill both -expand 1", "pack .f.sv -side left -fill y", "pack .f -fill both -expand 1", "pack .sh -fill x", "pack propagate . 0", "bind .f.l <Double-Button> { send tomain [.f.l get [.f.l curselection]] }", "update", }; init(xctxt: ref Context, argv: list of string) { sys = load Sys Sys->PATH; if (xctxt == nil) { sys->fprint(sys->fildes(2), "readmail: no window context\n"); raise "fail:bad context"; } draw = load Draw Draw->PATH; tk = load Tk Tk->PATH; tkclient = load Tkclient Tkclient->PATH; dialog = load Dialog Dialog->PATH; selectfile = load Selectfile Selectfile->PATH; str = load String String->PATH; kr = load Keyring Keyring->PATH; ctxt = xctxt; tkclient->init(); dialog->init(); selectfile->init(); tkargs := ""; argv = tl argv; if(argv != nil) { tkargs = hd argv; argv = tl argv; } titlectl := chan of string; (main, titlectl) = tkclient->toplevel(ctxt, tkargs, "Readmail: Reader", Tkclient->Appl); msg := chan of string; tk->namechan(main, msg, "msg"); hdr := chan of string; for (c:=0; c<len mail_cfg; c++) tk->cmd(main, mail_cfg[c]); tkclient->onscreen(main, nil); tkclient->startinput(main, "kbd"::"ptr"::nil); for(;;) alt { s := <-main.ctxt.kbd => tk->keyboard(main, s); s := <-main.ctxt.ptr => tk->pointer(main, *s); s := <-main.ctxt.ctl or s = <-main.wreq or s = <-titlectl => if(s == "exit") { if(srv.dfd != nil) { status("Updating mail box..."); pop3cmd("QUIT"); } return; } tkclient->wmctl(main, s); cmd := <-msg => case cmd { "connect" => if(srv.dfd == nil) { connect(main); if(srv.dfd != nil) initialize(); break; } disconnect(); "prev" => if(cmesg > nmesg) { status("no more messages."); break; } for(new := cmesg+1; new <= nmesg; new++) { if(map[new] == byte Ok) { cmesg = new; loadmesg(); break; } } "next" => for(new := cmesg-1; new >= 1; new--) { if(map[new] == byte Ok) { cmesg = new; loadmesg(); break; } } "dele" => delete(); if(cmesg > 0) { cmesg--; loadmesg(); } "hdrs" => headers(hdr); "save" => save(); "reply" => reply(); } get := <-hdr => new := int get; if(new < 1 || new > nmesg || map[new] != byte Ok) break; cmesg = new; loadmesg(); } } headers(tomain: chan of string) { (hdr, hdrctl) := tkclient->toplevel(ctxt, nil, "Readmail: Headers", Tkclient->Appl); tk->namechan(hdr, tomain, "tomain"); for (c:=0; c<len hdr_cfg; c++) tk->cmd(hdr, hdr_cfg[c]); for(i := 1; i <= nmesg; i++) { if(map[i] == byte Deleted) { info := sys->sprint("%4d ...Deleted...\n", i); tk->cmd(hdr, ".f.l insert 0 '"+info); continue; } if(topit(hdr, i) == 0) break; alt { s := <-hdrctl => if(s == "exit") return; tkclient->wmctl(hdr, s); * => ; } if((i%10) == 9) tk->cmd(hdr, "update"); } tk->cmd(hdr, "update"); tkclient->onscreen(hdr, nil); tkclient->startinput(hdr, "kbd"::"ptr"::nil); spawn hproc(hdrctl, hdr); } trunc(name: string): string { for(i := 0; i < len name; i++) if(name[i] == '<') break; i++; if(i >= len name) return name; for(j := i; j < len name; j++) if(name[j] == '>') break; return name[i:j]; } topit(hdr: ref Toplevel, msg: int): int { (err, s) := pop3cmd("TOP "+string msg+" 0"); if(err != nil) { dialog->prompt(ctxt, hdr.image, "error -fg red", "POP3 Error", "Ecountered a problem fetching headers\n"+err, 0, "Dismiss"::nil); return 0; } size := int s; b := pop3body(size); if(b == nil) return 0; from := getfield("from", b); from = trunc(from); date := getfield("date", b); subj := getfield("subject", b); if(len subj > 20) subj = subj[0:19]; if(len subj > 0) info := sys->sprint("%4d %5d %s \"%s\" %s", msg, size, from, subj, date); else info = sys->sprint("%4d %5d %s %s", msg, size, from, date); tk->cmd(hdr, ".f.l insert 0 '"+info); return 1; } mapdown(b: array of byte): string { lb := len b; l := array[lb] of byte; for(i := 0; i < lb; i++) { c := b[i]; if(c >= byte 'A' && c <= byte 'Z') c += byte('a' - 'A'); l[i] = c; } return string l; } getfield(key: string, text: array of byte): string { key[len key] = ':'; lk := len key; cl := byte key[0]; cu := cl - byte ('a' - 'A'); lc: byte; for(i := 0; i < len text - lk; i++) { t := text[i]; if(t == byte '\n' && lc == byte '\n') # end header break; lc = t; if(t != cu && t != cl) continue; if(key == mapdown(text[i:i+lk])) { i += lk+1; for(j := i+1; j < len text; j++) { c := text[j]; if(c == byte '\r' || c == byte '\n') break; } return string text[i:j]; } } return ""; } hproc(wmctl: chan of string, top: ref Toplevel) { for(;;) { alt { s := <-top.ctxt.kbd => tk->keyboard(top, s); s := <-top.ctxt.ptr => tk->pointer(top, *s); s := <-top.ctxt.ctl or s = <-top.wreq or s = <-wmctl => if(s == "exit") return; tkclient->wmctl(top, s); } } } reply() { if(cmesg == 0) { dialog->prompt(ctxt, main.image, "error -fg red", "Reply", "No message to reply to", 0, "Abort"::nil); return; } hdr := tk->cmd(main, ".hdr.t get 1.0 end"); if(hdr == "") { dialog->prompt(ctxt, main.image, "error -fg red", "Reply", "Mail has no header to reply to", 0, "Abort"::nil); return; } wmsender := load WmSendmail "/dis/wm/sendmail.dis"; if(wmsender == nil) { dialog->prompt(ctxt, main.image, "error -fg red", "Reply", "Failed to load mail sender:\n"+sys->sprint("%r"), 0, "Abort"::nil); return; } spawn wmsender->init(ctxt, "sendmail" :: hdr :: nil); } save() { if(cmesg == 0) { dialog->prompt(ctxt, main.image, "error -fg red", "Save", "No current message", 0, "Continue"::nil); return; } pat := list of { "*.let (Saved mail)", "* (All files)" }; fd: ref Sys->FD; fname: string; for(;;) { fname = selectfile->filename(ctxt, main.image, "Save in Mailbox", pat, "/usr/"+username+"/mail"); if(fname == nil) return; fd = sys->create(fname, sys->OWRITE, 8r660); if(fd != nil) break; labs := list of { "New name", "Abort" }; r := dialog->prompt(ctxt, main.image, "error -fg red", "Save", "Failed to create "+sys->sprint("%s\n%r", fname), 0, labs); if(r == 1) return; } s := tk->cmd(main, ".hdr.t get 1.0 end"); b := array of byte s; r := sys->write(fd, b, len b); if(r < 0) { dialog->prompt(ctxt, main.image, "error -fg red", "Save", "Error writing file"+sys->sprint("%s\n%r", fname), 0, "Continue (not saved)":: nil); return; } s = tk->cmd(main, ".body.t get 1.0 end"); b = array of byte s; n := sys->write(fd, b, len b); if(n < 0) { dialog->prompt(ctxt, main.image, "error -fg red", "Save", "Error writing file"+sys->sprint("%s\n%r", fname), 0, "Continue (not saved)":: nil); return; } status("wrote "+string(n+r)+" bytes."); } delete() { if(srv.dfd == nil) { dialog->prompt(ctxt, main.image, "warning -fg yellow", "Delete", "You must be connected to delete messages", 0, "Continue"::nil); return; } (err, s) := pop3cmd("DELE "+string cmesg); if(err != nil) { dialog->prompt(ctxt, main.image, "error -fg red", "Delete", "Encountered POP3 problem during delete\n"+err, 0, "Continue"::nil); return; } map[cmesg] = byte Deleted; status(s); } status(msg: string) { tk->cmd(main, ".top.status configure -text {"+msg+"}; update"); } disconnect() { (err, s) := pop3cmd("QUIT"); srv.dfd = nil; tk->cmd(main, ".top.con configure -text Connect"); if(err != nil) { dialog->prompt(ctxt, main.image, "error -fg red", "Disconnect", "POP3 protocol problem\n"+err, 0, "Proceed"::nil); return; } status(s); } connect(parent: ref Toplevel) { (t, conctl) := tkclient->toplevel(ctxt, postposn(parent), "Connection Parameters", 0); cmd := chan of string; tk->namechan(t, cmd, "cmd"); for (c:=0; c<len con_cfg; c++) tk->cmd(t, con_cfg[c]); username = rf("/dev/user"); sv := rf("/usr/"+username+"/mail/popserver"); if(sv != "") tk->cmd(t, ".e.h insert 0 '"+sv); u := tk->cmd(t, ".e.u get"); if(u == "") tk->cmd(t, ".e.u insert 0 '"+username); tk->cmd(t, "update"); tkclient->onscreen(t, nil); tkclient->startinput(t, "kbd"::"ptr"::nil); for(;;) alt { s := <-t.ctxt.kbd => tk->keyboard(t, s); s := <-t.ctxt.ptr => tk->pointer(t, *s); s := <-t.ctxt.ctl or s = <-t.wreq or s = <-conctl => if(s == "exit") return; tkclient->wmctl(t, s); s := <-cmd => if(s == "can") return; server := tk->cmd(t, ".e.h get"); if(server == "") { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "You must supply a server address", 0, "Proceed"::nil); break; } user := tk->cmd(t, ".e.u get"); if(user == "") { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "You must supply a user name", 0, "Proceed"::nil); break; } pass := tk->cmd(t, ".e.s get"); if(pass == "") { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "You must give a secret or password", 0, "Proceed"::nil); break; } if(dialer(t, server, user, pass) != 0) return; status("not connected"); } srv.dfd = nil; } initialize() { (err, s) := pop3cmd("STAT"); if(err != nil) { dialog->prompt(ctxt, main.image, "error -fg red", "Mailbox Status", "The following error occurred while "+ "checking your mailbox:\n"+err, 0, "Dismiss"::nil); srv.dfd = nil; status("not connected"); return; } tk->cmd(main, ".top.con configure -text Disconnect; update"); nmesg = int s; if(nmesg == 0) { status("There are no messages."); return; } map = array[nmesg+1] of byte; for(i := 0; i <= nmesg; i++) map[i] = byte Ok; s = ""; if(nmesg > 1) s = "s"; status("You have "+string nmesg+" message"+s); cmesg = nmesg; loadmesg(); } loadmesg() { if(srv.dfd == nil) { dialog->prompt(ctxt, main.image, "warning -fg yellow", "Read", "You must be connected to read messages", 0, "Continue"::nil); return; } (err, s) := pop3cmd("RETR "+sys->sprint("%d", cmesg)); if(err != nil) { dialog->prompt(ctxt, main.image, "error -fg red", "Read", "Error retrieving message:\n"+err, 0, "Continue"::nil); return; } tk->cmd(main, ".hdr.t delete 1.0 end; .body.t delete 1.0 end"); size := int s; status("reading "+string size+" bytes ..."); b := pop3body(size); (headr, body) := split(string b); b = nil; tk->cmd(main, ".hdr.t insert end '"+headr); tk->cmd(main, ".body.t insert end '"+body); tk->cmd(main, ".hdr.t see 1.0; .body.t see 1.0"); status("read message "+string cmesg+" of "+string nmesg+" , ready..."); } split(text: string): (string, string) { c, lc: int; hdr, body: string; hp := 0; for(i := 0; i < len text; i++) { c = text[i]; if(c == '\r') continue; hdr[hp++] = c; if(lc == '\n' && c == '\n') break; lc = c; } bp := 0; while(i < len text) { c = text[i++]; if(c != '\r') body[bp++] = c; } return (hdr, body); } dialer(t: ref Toplevel, server, user, pass: string): int { ok: int; for(;;) { status("dialing server..."); (ok, srv) = sys->dial(netmkaddr(server, nil, "110"), nil); if(ok >= 0) break; labs := list of { "Retry", "Cancel" }; ok = dialog->prompt(ctxt, t.image, "error -fg", "Connect", "The following error occurred while\n"+ "dialing the server: "+sys->sprint("%r"), 0, labs); if(ok != 0) return 0; } status("connected..."); (err, s) := pop3resp(); if(err != nil) { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "An error occurred during sign on.\n"+err, 0, "Proceed"::nil); return 0; } status(s); (nil, s) = str->splitl(s, "<"); (chal, nil) := str->splitr(s, ">"); if(chal != nil){ ca := array of byte chal; digest := array[kr->MD5dlen] of byte; md5state := kr->md5(ca, len ca, nil, nil); pa := array of byte pass; kr->md5(pa, len pa, digest, md5state); s = nil; for(i := 0; i < kr->MD5dlen; i++) s += sys->sprint("%2.2ux", int digest[i]); (err, s) = pop3cmd("APOP "+user+" "+s); if(err == nil) { status("ready to serve..."); return 1; } else { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "Challenge/response failed.\n"+err, 0, "Proceed"::nil); return 0; } } (err, s) = pop3cmd("USER "+user); if(err != nil) { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "An error occurred during login.\n"+err, 0, "Proceed"::nil); return 0; } (err, s) = pop3cmd("PASS "+pass); if(err != nil) { dialog->prompt(ctxt, t.image, "error -fg red", "Connect", "An error occurred during login.\n"+err, 0, "Proceed"::nil); return 0; } status("ready to serve..."); return 1; } rf(file: string): string { fd := sys->open(file, sys->OREAD); if(fd == nil) return ""; buf := array[Sys->NAMEMAX] of byte; n := sys->read(fd, buf, len buf); if(n < 0) return ""; return string buf[0:n]; } postposn(parent: ref Toplevel): string { x := int tk->cmd(parent, ".top.con cget -actx"); y := int tk->cmd(parent, ".top.con cget -acty"); h := int tk->cmd(parent, ".top.con cget -height"); return "-x "+string(x-2)+" -y "+string(y+h+2); } # # Talk POP3 # pop3cmd(cmd: string): (string, string) { cmd += "\r\n"; # sys->print("->%s", cmd); b := array of byte cmd; l := len b; n := sys->write(srv.dfd, b, l); if(n != l) return ("send to server:"+sys->sprint("%r"), nil); return pop3resp(); } pop3resp(): (string, string) { s := ""; i := 0; lastc := 0; for(;;) { c := pop3getc(); if(c == -1) return ("read from server:"+sys->sprint("%r"), nil); if(lastc == '\r' && c == '\n') break; s[i++] = c; lastc = c; } # sys->print("<-%s\n", s); if(i < 3) return ("short read from server", nil); s = s[0:i-1]; if(s[0:3] == "+OK") { i = 3; while(i < len s && s[i] == ' ') i++; return (nil, s[i:]); } if(s[0:4] == "-ERR") { i = 4; while(s[i] == ' ' && i < len s) i++; return (s[i:], nil); } return ("invalid server response", nil); } pop3body(size: int): array of byte { size += 512; b := array[size] of byte; cnt := emptypopbuf(b); size -= cnt; for(;;) { if(cnt > 5 && string b[cnt-5:cnt] == "\r\n.\r\n") { b = b[0:cnt-5]; break; } # resize buffer if(size == 0) { nb := array[len b + 4096] of byte; nb[0:] = b; size = len nb - len b; b = nb; nb = nil; } n := sys->read(srv.dfd, b[cnt:], len b - cnt); if(n <= 0) { dialog->prompt(ctxt, main.image, "error -fg red", "Read", sys->sprint("Error retrieving message: %r"), 0, "Continue"::nil); return nil; } size -= n; cnt += n; } return b; } Iob: adt { nbyte: int; posn: int; buf: array of byte; }; popbuf: Iob; pop3getc(): int { if(popbuf.nbyte > 0) { popbuf.nbyte--; return int popbuf.buf[popbuf.posn++]; } if(popbuf.buf == nil) popbuf.buf = array[512] of byte; popbuf.posn = 0; n := sys->read(srv.dfd, popbuf.buf, len popbuf.buf); if(n < 0) return -1; popbuf.nbyte = n-1; return int popbuf.buf[popbuf.posn++]; } emptypopbuf(a: array of byte) : int { i := popbuf.nbyte; if (i) { a[0:] = popbuf.buf[popbuf.posn:(popbuf.posn+popbuf.nbyte)]; popbuf.nbyte = 0; } return i; } netmkaddr(addr, net, svc: string): string { if(net == nil) net = "net"; (n, l) := sys->tokenize(addr, "!"); if(n <= 1){ if(svc== nil) return sys->sprint("%s!%s", net, addr); return sys->sprint("%s!%s!%s", net, addr, svc); } if(svc == nil || n > 2) return addr; return sys->sprint("%s!%s", addr, svc); }