2 * Copyright notice from original mutt:
3 * Copyright (C) 1999-2000 Thomas Roessler <roessler@does-not-exist.org>
5 * This file is part of mutt-ng, see http://www.muttng.org/.
6 * It's licensed under the GNU General Public License,
7 * please see the file GPL in the top level source directory.
11 * Mixmaster support for Mutt
14 #include <lib-lib/lib-lib.h>
16 #include <lib-sys/unix.h>
17 #include <lib-ui/curses.h>
18 #include <lib-ui/menu.h>
21 #include "recvattach.h"
25 #define SW (option(OPTMBOXPANE)?SidebarWidth:0)
27 #define MIX_CAP_COMPRESS (1 << 0)
28 #define MIX_CAP_MIDDLEMAN (1 << 1)
29 #define MIX_CAP_NEWSPOST (1 << 2)
30 #define MIX_CAP_NEWSMAIL (1 << 3)
32 /* Mixmaster's maximum chain length. Don't change this. */
35 typedef struct remailer_t {
43 DO_INIT(remailer_t, remailer);
44 static void remailer_wipe(remailer_t *remailer) {
45 p_delete(&remailer->shortname);
46 p_delete(&remailer->addr);
47 p_delete(&remailer->ver);
49 DO_NEW(remailer_t, remailer);
50 DO_DELETE(remailer_t, remailer);
52 typedef struct mixchain_t {
61 static int mix_get_caps(const char *capstr)
68 caps |= MIX_CAP_COMPRESS;
72 caps |= MIX_CAP_MIDDLEMAN;
78 caps |= MIX_CAP_NEWSMAIL;
82 caps |= MIX_CAP_NEWSPOST;
95 static void mix_add_entry(remailer_t ***type2_list, remailer_t *entry,
96 ssize_t *slots, ssize_t *used)
98 if (*used == *slots) {
100 p_realloc(type2_list, *slots);
103 (*type2_list)[(*used)++] = entry;
108 /* parse the type2.list as given by mixmaster -T */
109 static remailer_t **mix_type2_list (ssize_t * l)
115 char cmd[HUGE_STRING + _POSIX_PATH_MAX];
116 char line[HUGE_STRING];
119 remailer_t **type2_list = NULL, *p;
120 ssize_t slots = 0, used = 0;
125 if ((devnull = open ("/dev/null", O_RDWR)) == -1)
128 snprintf (cmd, sizeof (cmd), "%s -T", Mixmaster);
131 mutt_create_filter_fd (cmd, NULL, &fp, NULL, devnull, -1,
137 /* first, generate the "random" remailer */
140 p->shortname = m_strdup("<random>");
141 mix_add_entry (&type2_list, p, &slots, &used);
143 while (fgets (line, sizeof (line), fp)) {
146 if (!(t = strtok (line, " \t\n")))
149 p->shortname = m_strdup(t);
151 if (!(t = strtok (NULL, " \t\n")))
154 p->addr = m_strdup(t);
156 if (!(t = strtok (NULL, " \t\n")))
159 if (!(t = strtok (NULL, " \t\n")))
162 p->ver = m_strdup(t);
164 if (!(t = strtok (NULL, " \t\n")))
167 p->caps = mix_get_caps (t);
169 mix_add_entry (&type2_list, p, &slots, &used);
178 mix_add_entry (&type2_list, NULL, &slots, &used);
179 mutt_wait_filter (mm_pid);
186 static void mix_free_type2_list (remailer_t *** ttlp)
189 remailer_t **type2_list = *ttlp;
191 for (i = 0; type2_list[i]; i++)
192 remailer_delete(&type2_list[i]);
194 p_delete(type2_list);
198 #define MIX_HOFFSET 2
199 #define MIX_VOFFSET (LINES - 6)
200 #define MIX_MAXROW (LINES - 3)
203 static void mix_screen_coordinates (remailer_t ** type2_list,
204 struct coord **coordsp,
205 mixchain_t * chain, int i)
208 struct coord *coords;
213 p_realloc(coordsp, chain->cl);
219 coords[i - 1].c + m_strlen(type2_list[chain->ch[i - 1]]->shortname) + 2;
228 for (; i < chain->cl; i++) {
230 c += m_strlen(type2_list[chain->ch[i]]->shortname) + 2;
233 oc = c = MIX_HOFFSET;
244 static void mix_redraw_ce (remailer_t ** type2_list,
245 struct coord *coords,
246 mixchain_t * chain, int i, short selected)
248 if (!coords || !chain)
251 if (coords[i].r < MIX_MAXROW) {
254 SETCOLOR (MT_COLOR_INDICATOR);
256 SETCOLOR (MT_COLOR_NORMAL);
258 mvaddstr (coords[i].r, coords[i].c, type2_list[chain->ch[i]]->shortname);
259 SETCOLOR (MT_COLOR_NORMAL);
261 if (i + 1 < chain->cl)
266 static void mix_redraw_chain (remailer_t ** type2_list,
267 struct coord *coords, mixchain_t * chain, int cur)
271 SETCOLOR (MT_COLOR_NORMAL);
272 BKGDSET (MT_COLOR_NORMAL);
274 for (i = MIX_VOFFSET; i < MIX_MAXROW; i++) {
279 for (i = 0; i < chain->cl; i++)
280 mix_redraw_ce (type2_list, coords, chain, i, i == cur);
283 static void mix_redraw_head (mixchain_t * chain)
285 SETCOLOR (MT_COLOR_STATUS);
286 mvprintw (MIX_VOFFSET - 1, 0, "-- Remailer chain [Length: %d]",
287 chain ? chain->cl : 0);
289 BKGDSET (MT_COLOR_STATUS);
292 BKGDSET (MT_COLOR_NORMAL);
293 SETCOLOR (MT_COLOR_NORMAL);
296 static const char *mix_format_caps (remailer_t * r)
298 static char capbuff[10];
301 if (r->caps & MIX_CAP_COMPRESS)
306 if (r->caps & MIX_CAP_MIDDLEMAN)
311 if (r->caps & MIX_CAP_NEWSPOST) {
320 if (r->caps & MIX_CAP_NEWSMAIL) {
335 * Format an entry for the remailer menu.
343 static const char *mix_entry_fmt (char *dest,
348 const char *ifstring,
349 const char *elsestring,
350 unsigned long data, format_flag flags)
353 remailer_t *remailer = (remailer_t *) data;
354 int optional = (flags & M_FORMAT_OPTIONAL);
359 snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
360 snprintf (dest, destlen, fmt, remailer->num);
365 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
366 snprintf (dest, destlen, fmt, mix_format_caps (remailer));
371 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
372 snprintf (dest, destlen, fmt, NONULL (remailer->shortname));
374 else if (!remailer->shortname)
379 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
380 snprintf (dest, destlen, fmt, NONULL (remailer->addr));
382 else if (!remailer->addr)
391 mutt_FormatString (dest, destlen, ifstring, mutt_attach_fmt, data, 0);
392 else if (flags & M_FORMAT_OPTIONAL)
393 mutt_FormatString (dest, destlen, elsestring, mutt_attach_fmt, data, 0);
399 static void mix_entry (char *b, ssize_t blen, MUTTMENU * menu, int num)
401 remailer_t **type2_list = (remailer_t **) menu->data;
402 int w = (COLS-SW) > blen ? blen : (COLS-SW);
404 mutt_FormatString (b, w, NONULL (MixEntryFormat), mix_entry_fmt,
405 (unsigned long) type2_list[num], M_FORMAT_ARROWCURSOR);
408 static int mix_chain_add (mixchain_t * chain, const char *s,
409 remailer_t ** type2_list)
413 if (chain->cl >= MAXMIXES)
416 if (!m_strcmp(s, "0") || !ascii_strcasecmp (s, "<random>")) {
417 chain->ch[chain->cl++] = 0;
421 for (i = 0; type2_list[i]; i++) {
422 if (!ascii_strcasecmp (s, type2_list[i]->shortname)) {
423 chain->ch[chain->cl++] = i;
428 /* replace unknown remailers by <random> */
431 chain->ch[chain->cl++] = 0;
436 static struct mapping_t RemailerHelp[] = {
437 {N_("Append"), OP_MIX_APPEND},
438 {N_("Insert"), OP_MIX_INSERT},
439 {N_("Delete"), OP_MIX_DELETE},
440 {N_("Abort"), OP_EXIT},
441 {N_("OK"), OP_MIX_USE},
446 void mix_make_chain (string_list_t ** chainp, int *redraw)
450 int c_cur = 0, c_old = 0;
454 remailer_t **type2_list = NULL;
457 struct coord *coords = NULL;
460 char helpstr[STRING];
467 if (!(type2_list = mix_type2_list (&ttll))) {
468 mutt_error _("Can't get mixmaster's type2.list!");
473 *redraw = REDRAW_FULL;
475 chain = p_new(mixchain_t, 1);
476 for (p = *chainp; p; p = p->next)
477 mix_chain_add (chain, (char *) p->data, type2_list);
479 string_list_wipe(chainp);
482 for (i = 0; i < chain->cl; i++) {
483 if (chain->ch[i] >= ttll)
487 mix_screen_coordinates (type2_list, &coords, chain, 0);
489 menu = mutt_new_menu ();
490 menu->menu = MENU_MIX;
492 menu->make_entry = mix_entry;
494 menu->title = _("Select a remailer chain.");
495 menu->data = type2_list;
497 mutt_compile_help (helpstr, sizeof (helpstr), MENU_MIX, RemailerHelp);
499 m_len = menu->pagelen = MIX_VOFFSET - menu->offset - 1;
502 if (menu->pagelen != m_len) {
503 menu->pagelen = m_len;
504 menu->redraw = REDRAW_FULL;
508 mix_redraw_head (chain);
509 mix_redraw_chain (type2_list, coords, chain, c_cur);
512 else if (c_cur != c_old) {
513 mix_redraw_ce (type2_list, coords, chain, c_old, 0);
514 mix_redraw_ce (type2_list, coords, chain, c_cur, 1);
519 switch ((op = mutt_menuLoop (menu))) {
522 menu_redraw_status (menu);
523 mix_redraw_head (chain);
524 mix_screen_coordinates (type2_list, &coords, chain, 0);
525 mix_redraw_chain (type2_list, coords, chain, c_cur);
526 menu->pagelen = m_len = MIX_VOFFSET - menu->offset - 1;
541 chain->ch[0] = menu->current;
542 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
546 if (chain->cl && chain->ch[chain->cl - 1] &&
547 (type2_list[chain->ch[chain->cl - 1]]->caps & MIX_CAP_MIDDLEMAN))
550 ("Error: %s can't be used as the final remailer of a chain."),
551 type2_list[chain->ch[chain->cl - 1]]->shortname);
559 case OP_GENERIC_SELECT_ENTRY:
562 if (chain->cl < MAXMIXES && c_cur < chain->cl)
568 if (chain->cl < MAXMIXES) {
570 for (i = chain->cl - 1; i > c_cur; i--)
571 chain->ch[i] = chain->ch[i - 1];
573 chain->ch[c_cur] = menu->current;
574 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
578 mutt_error (_("Mixmaster chains are limited to %d elements."),
589 for (i = c_cur; i < chain->cl; i++)
590 chain->ch[i] = chain->ch[i + 1];
592 if (c_cur == chain->cl && c_cur)
595 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
599 mutt_error _("The remailer chain is already empty.");
604 case OP_MIX_CHAIN_PREV:
609 mutt_error _("You already have the first chain element selected.");
614 case OP_MIX_CHAIN_NEXT:
616 if (chain->cl && c_cur < chain->cl - 1)
619 mutt_error _("You already have the last chain element selected.");
626 mutt_menuDestroy (&menu);
628 /* construct the remailer list */
631 for (i = 0; i < chain->cl; i++) {
632 if ((j = chain->ch[i]))
633 t = type2_list[j]->shortname;
637 *chainp = mutt_add_list (*chainp, t);
641 mix_free_type2_list (&type2_list);
646 /* some safety checks before piping the message to mixmaster */
648 int mix_check_message (HEADER * msg)
651 short need_hostname = 0;
654 if (msg->env->cc || msg->env->bcc) {
655 mutt_error _("Mixmaster doesn't accept Cc or Bcc headers.");
660 /* When using mixmaster, we MUST qualify any addresses since
661 * the message will be delivered through remote systems.
663 * use_domain won't be respected at this point, hidden_host will.
666 for (p = msg->env->to; p; p = p->next) {
667 if (!p->group && strchr (p->mailbox, '@') == NULL) {
675 if (!(fqdn = mutt_fqdn(1))) {
677 _("Please set the hostname variable to a proper value when using mixmaster!");
681 /* Cc and Bcc are empty at this point. */
682 rfc822_qualify(msg->env->to, fqdn);
683 rfc822_qualify(msg->env->reply_to, fqdn);
684 rfc822_qualify(msg->env->mail_followup_to, fqdn);
690 int mix_send_message (string_list_t * chain, const char *tempfile)
692 char cmd[HUGE_STRING];
693 char tmp[HUGE_STRING];
694 char cd_quoted[STRING];
697 snprintf (cmd, sizeof (cmd), "cat %s | %s -m ", tempfile, Mixmaster);
699 for (i = 0; chain; chain = chain->next, i = 1) {
700 m_strcpy(tmp, sizeof(tmp), cmd);
701 mutt_quote_filename (cd_quoted, sizeof (cd_quoted), (char *) chain->data);
702 snprintf (cmd, sizeof (cmd), "%s%s%s", tmp, i ? "," : " -l ", cd_quoted);
705 if (!option (OPTNOCURSES))
708 if ((i = mutt_system (cmd))) {
709 fprintf (stderr, _("Error sending message, child exited %d.\n"), i);
710 if (!option (OPTNOCURSES)) {
711 mutt_any_key_to_continue (NULL);
712 mutt_error _("Error sending message.");