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.
344 mix_entry_fmt (char *dest, ssize_t destlen, char op, const char *src,
345 const char *prefix, const char *ifstr,
346 const char *elstr, anytype data, format_flag flags)
349 remailer_t *remailer = data.ptr;
350 int optional = (flags & M_FORMAT_OPTIONAL);
355 snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
356 snprintf (dest, destlen, fmt, remailer->num);
361 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
362 snprintf (dest, destlen, fmt, mix_format_caps (remailer));
367 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
368 snprintf (dest, destlen, fmt, NONULL (remailer->shortname));
370 else if (!remailer->shortname)
375 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
376 snprintf (dest, destlen, fmt, NONULL (remailer->addr));
378 else if (!remailer->addr)
386 if (flags & M_FORMAT_OPTIONAL)
387 m_strformat(dest, destlen, 0, optional ? ifstr : elstr,
388 mutt_attach_fmt, data, 0);
394 static void mix_entry (char *b, ssize_t blen, MUTTMENU * menu, int num)
396 remailer_t **type2_list = (remailer_t **) menu->data;
398 m_strformat(b, blen, COLS - SW, MixEntryFormat, mix_entry_fmt,
400 option(OPTARROWCURSOR) ? M_FORMAT_ARROWCURSOR : 0);
403 static int mix_chain_add (mixchain_t * chain, const char *s,
404 remailer_t ** type2_list)
408 if (chain->cl >= MAXMIXES)
411 if (!m_strcmp(s, "0") || !ascii_strcasecmp (s, "<random>")) {
412 chain->ch[chain->cl++] = 0;
416 for (i = 0; type2_list[i]; i++) {
417 if (!ascii_strcasecmp (s, type2_list[i]->shortname)) {
418 chain->ch[chain->cl++] = i;
423 /* replace unknown remailers by <random> */
426 chain->ch[chain->cl++] = 0;
431 static struct mapping_t RemailerHelp[] = {
432 {N_("Append"), OP_MIX_APPEND},
433 {N_("Insert"), OP_MIX_INSERT},
434 {N_("Delete"), OP_MIX_DELETE},
435 {N_("Abort"), OP_EXIT},
436 {N_("OK"), OP_MIX_USE},
441 void mix_make_chain (string_list_t ** chainp, int *redraw)
445 int c_cur = 0, c_old = 0;
449 remailer_t **type2_list = NULL;
452 struct coord *coords = NULL;
455 char helpstr[STRING];
462 if (!(type2_list = mix_type2_list (&ttll))) {
463 mutt_error _("Can't get mixmaster's type2.list!");
468 *redraw = REDRAW_FULL;
470 chain = p_new(mixchain_t, 1);
471 for (p = *chainp; p; p = p->next)
472 mix_chain_add (chain, (char *) p->data, type2_list);
474 string_list_wipe(chainp);
477 for (i = 0; i < chain->cl; i++) {
478 if (chain->ch[i] >= ttll)
482 mix_screen_coordinates (type2_list, &coords, chain, 0);
484 menu = mutt_new_menu ();
485 menu->menu = MENU_MIX;
487 menu->make_entry = mix_entry;
489 menu->title = _("Select a remailer chain.");
490 menu->data = type2_list;
492 mutt_compile_help (helpstr, sizeof (helpstr), MENU_MIX, RemailerHelp);
494 m_len = menu->pagelen = MIX_VOFFSET - menu->offset - 1;
497 if (menu->pagelen != m_len) {
498 menu->pagelen = m_len;
499 menu->redraw = REDRAW_FULL;
503 mix_redraw_head (chain);
504 mix_redraw_chain (type2_list, coords, chain, c_cur);
507 else if (c_cur != c_old) {
508 mix_redraw_ce (type2_list, coords, chain, c_old, 0);
509 mix_redraw_ce (type2_list, coords, chain, c_cur, 1);
514 switch ((op = mutt_menuLoop (menu))) {
517 menu_redraw_status (menu);
518 mix_redraw_head (chain);
519 mix_screen_coordinates (type2_list, &coords, chain, 0);
520 mix_redraw_chain (type2_list, coords, chain, c_cur);
521 menu->pagelen = m_len = MIX_VOFFSET - menu->offset - 1;
536 chain->ch[0] = menu->current;
537 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
541 if (chain->cl && chain->ch[chain->cl - 1] &&
542 (type2_list[chain->ch[chain->cl - 1]]->caps & MIX_CAP_MIDDLEMAN))
545 ("Error: %s can't be used as the final remailer of a chain."),
546 type2_list[chain->ch[chain->cl - 1]]->shortname);
554 case OP_GENERIC_SELECT_ENTRY:
557 if (chain->cl < MAXMIXES && c_cur < chain->cl)
563 if (chain->cl < MAXMIXES) {
565 for (i = chain->cl - 1; i > c_cur; i--)
566 chain->ch[i] = chain->ch[i - 1];
568 chain->ch[c_cur] = menu->current;
569 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
573 mutt_error (_("Mixmaster chains are limited to %d elements."),
584 for (i = c_cur; i < chain->cl; i++)
585 chain->ch[i] = chain->ch[i + 1];
587 if (c_cur == chain->cl && c_cur)
590 mix_screen_coordinates (type2_list, &coords, chain, c_cur);
594 mutt_error _("The remailer chain is already empty.");
599 case OP_MIX_CHAIN_PREV:
604 mutt_error _("You already have the first chain element selected.");
609 case OP_MIX_CHAIN_NEXT:
611 if (chain->cl && c_cur < chain->cl - 1)
614 mutt_error _("You already have the last chain element selected.");
621 mutt_menuDestroy (&menu);
623 /* construct the remailer list */
626 for (i = 0; i < chain->cl; i++) {
627 if ((j = chain->ch[i]))
628 t = type2_list[j]->shortname;
632 *chainp = mutt_add_list (*chainp, t);
636 mix_free_type2_list (&type2_list);
641 /* some safety checks before piping the message to mixmaster */
643 int mix_check_message (HEADER * msg)
646 short need_hostname = 0;
649 if (msg->env->cc || msg->env->bcc) {
650 mutt_error _("Mixmaster doesn't accept Cc or Bcc headers.");
655 /* When using mixmaster, we MUST qualify any addresses since
656 * the message will be delivered through remote systems.
658 * use_domain won't be respected at this point, hidden_host will.
661 for (p = msg->env->to; p; p = p->next) {
662 if (!p->group && strchr (p->mailbox, '@') == NULL) {
670 if (!(fqdn = mutt_fqdn(1))) {
672 _("Please set the hostname variable to a proper value when using mixmaster!");
676 /* Cc and Bcc are empty at this point. */
677 rfc822_qualify(msg->env->to, fqdn);
678 rfc822_qualify(msg->env->reply_to, fqdn);
679 rfc822_qualify(msg->env->mail_followup_to, fqdn);
685 int mix_send_message (string_list_t * chain, const char *tempfile)
687 char cmd[HUGE_STRING];
688 char tmp[HUGE_STRING];
689 char cd_quoted[STRING];
692 snprintf (cmd, sizeof (cmd), "cat %s | %s -m ", tempfile, Mixmaster);
694 for (i = 0; chain; chain = chain->next, i = 1) {
695 m_strcpy(tmp, sizeof(tmp), cmd);
696 mutt_quote_filename (cd_quoted, sizeof (cd_quoted), (char *) chain->data);
697 snprintf (cmd, sizeof (cmd), "%s%s%s", tmp, i ? "," : " -l ", cd_quoted);
700 if (!option (OPTNOCURSES))
703 if ((i = mutt_system (cmd))) {
704 fprintf (stderr, _("Error sending message, child exited %d.\n"), i);
705 if (!option (OPTNOCURSES)) {
706 mutt_any_key_to_continue (NULL);
707 mutt_error _("Error sending message.");