3 * msh.c -- The nmh shell
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
12 * Keep more status information in maildrop map
17 #include <h/signals.h>
18 #include <h/dropsbr.h>
19 #include <h/fmt_scan.h>
20 #include <h/scansbr.h>
33 #define QUOTE '\\' /* sigh */
35 static struct swit switches[] = {
37 { "idstart number", -7 }, /* interface from bbc */
39 { "idstop number", -6 }, /* .. */
41 { "idquit number", -6 }, /* .. */
43 { "idname BBoard", -6 }, /* .. */
45 { "prompt string", 0 },
53 { "vmhwrite fd", -8 },
57 { "popwrite fd", -8 },
69 static int mbx_style = MMDF_FORMAT;
74 char*fmsh = NULL; /* folder instead of file */
75 int modified; /* command modified folder */
76 struct msgs *mp; /* used a lot */
78 struct Msg *Msgs = NULL; /* Msgs[0] not used */
79 static FILE *fp; /* input file */
80 static FILE *yp = NULL; /* temporary file */
81 static int mode; /* mode of file */
82 static int numfds = 0; /* number of files cached */
83 static int maxfds = 0; /* number of files cached to be cached */
84 static time_t mtime = (time_t) 0; /* mtime of file */
89 #define ALARM ((unsigned int) 10)
90 #define ttyN(c) ttyNaux ((c), NULL)
94 static int vmhpid = OK;
99 static int vmhtty = NOTOK;
106 static int topcur = 0;
108 static int numwins = 0;
109 static int windows[NWIN + 1];
111 static jmp_buf peerenv;
116 static int pfd = NOTOK; /* fd parent is reading from */
117 static int ppid = 0; /* pid of parent */
122 int interactive; /* running from a /dev/tty */
123 int redirected; /* re-directing output */
124 FILE *sp = NULL; /* original stdout */
126 char *cmd_name; /* command being run */
127 char myfilter[BUFSIZ]; /* path to mhl.forward */
129 static char *myprompt = "(%s) ";/* prompting string */
134 static int gap; /* gap in BBoard-ID:s */
135 static char *myname = NULL; /* BBoard name */
136 char *BBoard_ID = "BBoard-ID"; /* BBoard-ID constant */
141 SIGNAL_HANDLER istat; /* original SIGINT */
142 static SIGNAL_HANDLER pstat; /* current SIGPIPE */
143 SIGNAL_HANDLER qstat; /* original SIGQUIT */
146 SIGNAL_HANDLER tstat; /* original SIGTSTP */
149 int interrupted; /* SIGINT detected */
150 int broken_pipe; /* SIGPIPE detected */
151 int told_to_quit; /* SIGQUIT detected */
156 int SOprintf (char *, ...); /* from termsbr.c */
157 int sc_width (void); /* from termsbr.c */
158 void fsetup (char *);
160 FILE *msh_ready (int, int);
163 void display_info (int);
166 void seq_setcur (struct msgs *, int);
167 void padios (char *, char *, ...);
168 void padvise (char *, char *, ...);
174 static void msh (int);
175 static int read_map (char *, long);
176 static int read_file (long, int);
178 static void m_gMsgs (int);
179 FILE *msh_ready (int, int);
180 static int check_folder (int);
181 static void scanrange (int, int);
182 static void scanstring (char *);
183 static void write_ids (void);
184 static void quit (void);
185 static int getargs (char *, struct swit *, struct Cmd *);
186 static int getcmds (struct swit *, struct Cmd *, int);
187 static int parse (char *, struct Cmd *);
188 static int init_io (struct Cmd *, int);
189 static int initaux_io (struct Cmd *);
190 static void fin_io (struct Cmd *, int);
191 static void finaux_io (struct Cmd *);
192 static void m_init (void);
193 static void intrser (int);
194 static void pipeser (int);
195 static void quitser (int);
196 static void alrmser (int);
197 static int pINI (void);
198 static int pQRY (char *, int);
199 static int pQRY1 (int);
200 static int pQRY2 (void);
201 static int pCMD (char *, struct swit *, struct Cmd *);
202 static int pFIN (void);
203 static int peerwait (void);
204 static int ttyNaux (struct Cmd *, char *);
205 static int ttyR (struct Cmd *);
206 static int winN (struct Cmd *, int, int);
207 static int winR (struct Cmd *);
208 static int winX (int);
212 main (int argc, char **argv)
214 int id = 0, scansw = 0, vmh1 = 0, vmh2 = 0;
215 char *cp, *file = NULL, *folder = NULL;
216 char **argp, **arguments, buf[BUFSIZ];
219 setlocale(LC_ALL, "");
221 invo_name = r1bindex (argv[0], '/');
223 /* read user profile/context */
226 mts_init (invo_name);
227 arguments = getarguments (invo_name, argc,argv, 1);
230 while ((cp = *argp++)) {
232 switch (smatch (++cp, switches)) {
234 ambigsw (cp, switches);
237 adios (NULL, "-%s unknown", cp);
240 snprintf (buf, sizeof(buf), "%s [switches] file", invo_name);
241 print_help (buf, switches, 1);
244 print_version(invo_name);
248 if (!(cp = *argp++) || *cp == '-')
249 adios (NULL, "missing argument to %s", argp[-2]);
250 if ((id = atoi (cp)) < 1)
251 adios (NULL, "bad argument %s %s", argp[-2], cp);
254 if (!(cp = *argp++) || *cp == '-')
255 adios (NULL, "missing argument to %s", argp[-2]);
256 if ((pfd = atoi (cp)) <= 1)
257 adios (NULL, "bad argument %s %s", argp[-2], cp);
260 if (!(cp = *argp++) || *cp == '-')
261 adios (NULL, "missing argument to %s", argp[-2]);
262 if ((ppid = atoi (cp)) <= 1)
263 adios (NULL, "bad argument %s %s", argp[-2], cp);
266 if (!(myname = *argp++) || *myname == '-')
267 adios (NULL, "missing argument to %s", argp[-2]);
278 if (!(myprompt = *argp++) || *myprompt == '-')
279 adios (NULL, "missing argument to %s", argp[-2]);
283 if (!(cp = *argp++) || *cp == '-')
284 adios (NULL, "missing argument to %s", argp[-2]);
285 if ((vmh1 = atoi (cp)) < 1)
286 adios (NULL, "bad argument %s %s", argp[-2], cp);
289 if (!(cp = *argp++) || *cp == '-')
290 adios (NULL, "missing argument to %s", argp[-2]);
291 if ((vmh2 = atoi (cp)) < 1)
292 adios (NULL, "bad argument %s %s", argp[-2], cp);
296 if (!(cp = *argp++) || *cp == '-')
297 adios (NULL, "missing argument to %s", argp[-2]);
300 if (!(cp = *argp++) || *cp == '-')
301 adios (NULL, "missing argument to %s", argp[-2]);
311 if (*cp == '+' || *cp == '@') {
313 adios (NULL, "only one folder at a time!");
315 folder = pluspath (cp);
319 adios (NULL, "only one file at a time!");
324 if (!file && !folder)
327 adios (NULL, "use a file or a folder, not both");
328 strncpy (myfilter, etcpath (mhlforward), sizeof(myfilter));
331 ioctl (pfd, FIOCLEX, NULL);
334 istat = SIGNAL2 (SIGINT, intrser);
335 qstat = SIGNAL2 (SIGQUIT, quitser);
337 sc_width (); /* MAGIC... */
339 if ((vmh = vmh1 && vmh2)) {
342 SIGNAL (SIGINT, SIG_IGN);
343 SIGNAL (SIGQUIT, SIG_IGN);
345 tstat = SIGNAL (SIGTSTP, SIG_IGN);
354 display_info (id > 0 ? scansw : 0);
356 msh (id > 0 ? scansw : 0);
365 static struct swit mshcmds[] = {
430 register char *cp, **ap;
431 char prompt[BUFSIZ], *vec[MAXARGS];
433 register struct Cmd *cmdp;
434 static int once_only = ADVCMD;
436 snprintf (prompt, sizeof(prompt), myprompt, invo_name);
445 if ((i = getcmds (mshcmds, cmdp, scansw)) == EOF) {
450 check_folder (scansw);
451 if ((i = getargs (prompt, mshcmds, cmdp)) == EOF) {
456 cmd_name = mshcmds[i].sw;
464 if (once_only == ADVCMD)
465 once_only = i = SHOWCMD;
467 i = mp->curmsg != mp->hghmsg ? NEXTCMD : EXITCMD;
468 cmd_name = mshcmds[i].sw;
474 case FORWCMD: /* sigh */
484 if ((cp = context_find (cmd_name))) {
486 ap = brkstring (cp, " ", "\n");
487 ap = copyip (ap, vec, MAXARGS);
498 copyip (cmdp->args + 1, ap, MAXARGS);
502 if (!vmh && init_io (cmdp, vmh) == NOTOK) {
508 redirected = vmh || cmdp->direction != STDIO;
519 if (!vmh || ttyN (cmdp) != NOTOK)
520 forkcmd (vec, cmd_name);
524 if (!vmh || ttyN (cmdp) != NOTOK)
529 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
535 || (filehak (vec) == OK ? ttyN (cmdp)
536 : winN (cmdp, DISPLAY, 1)) != NOTOK)
541 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
546 if (!vmh || ttyN (cmdp) != NOTOK)
551 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
557 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
562 if (!vmh || ttyN (cmdp) != NOTOK)
569 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
575 || (packhak (vec) == OK ? ttyN (cmdp)
576 : winN (cmdp, DISPLAY, 1)) != NOTOK)
581 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
586 if (!vmh || ttyN (cmdp) != NOTOK)
591 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
596 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
601 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
606 padios (NULL, "no dispatch for %s", cmd_name);
628 fsetup (char *folder)
634 maildir = m_maildir (folder);
635 if (chdir (maildir) == NOTOK)
636 padios (maildir, "unable to change directory to");
638 /* read folder and create message structure */
639 if (!(mp = folder_read (folder)))
640 padios (NULL, "unable to read folder %s", folder);
642 /* check for empty folder */
644 padios (NULL, "no messages in %s", folder);
647 mtime = stat (mp->foldpath, &st) != NOTOK ? st.st_mtime : 0;
649 m_gMsgs (mp->hghmsg);
651 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
652 Msgs[msgnum].m_bboard_id = 0;
653 Msgs[msgnum].m_top = NOTOK;
654 Msgs[msgnum].m_start = Msgs[msgnum].m_stop = 0L;
655 Msgs[msgnum].m_scanl = NULL;
660 fmsh = getcpy (folder);
662 maxfds = OPEN_MAX / 2;
664 if ((maxfds -= 2) < 1)
674 if ((fp = fopen (file, "r")) == NULL)
675 padios (file, "unable to read");
677 ioctl (fileno (fp), FIOCLEX, NULL);
679 if (fstat (fileno (fp), &st) != NOTOK) {
680 mode = (int) (st.st_mode & 0777), mtime = st.st_mtime;
681 msgp = read_map (file, (long) st.st_size);
684 mode = m_gmprot (), mtime = 0;
688 if ((msgp = read_file (msgp ? Msgs[msgp].m_stop : 0L, msgp + 1)) < 1)
689 padios (NULL, "no messages in %s", myname ? myname : file);
691 if (!(mp = (struct msgs *) calloc ((size_t) 1, sizeof(*mp))))
692 padios (NULL, "unable to allocate folder storage");
694 if (!(mp->msgstats = calloc ((size_t) msgp + 3, sizeof(*(mp->msgstats)))))
695 padios (NULL, "unable to allocate message status storage");
701 mp->foldpath = getcpy (myname ? myname : file);
702 clear_folder_flags (mp);
705 if (st.st_uid != getuid () || access (file, W_OK) == NOTOK)
709 mp->hghoff = mp->hghmsg + 1;
711 for (i = mp->lowmsg; i <= mp->hghmsg; i++) {
712 clear_msg_flags (mp, i);
717 mp->msgattrs[0] = getcpy ("unseen");
718 mp->msgattrs[1] = NULL;
720 m_unknown (fp); /* the MAGIC invocation */
729 read_map (char *file, long size)
731 register int i, msgp;
732 register struct drop *dp, *mp;
735 if ((i = map_read (file, size, &rp, 1)) == 0)
741 for (dp = rp + 1; i-- > 0; msgp++, dp++) {
742 mp = &Msgs[msgp].m_drop;
744 mp->d_size = dp->d_size;
745 mp->d_start = dp->d_start;
746 mp->d_stop = dp->d_stop;
747 Msgs[msgp].m_scanl = NULL;
756 read_file (long pos, int msgp)
759 register struct drop *dp, *mp;
762 if ((i = mbx_read (fp, pos, &rp, 1)) <= 0)
765 m_gMsgs ((msgp - 1) + i);
767 for (dp = rp; i-- > 0; msgp++, dp++) {
768 mp = &Msgs[msgp].m_drop;
770 mp->d_size = dp->d_size;
771 mp->d_start = dp->d_start;
772 mp->d_stop = dp->d_stop;
773 Msgs[msgp].m_scanl = NULL;
787 nMsgs = n + MAXFOLDER / 2;
788 Msgs = (struct Msg *) calloc ((size_t) (nMsgs + 2), sizeof *Msgs);
790 padios (NULL, "unable to allocate Msgs structure");
797 nmsgs = nMsgs + n + MAXFOLDER / 2;
798 Msgs = (struct Msg *) mh_xrealloc ((char *) Msgs, (size_t) (nmsgs + 2) * sizeof *Msgs);
799 memset((char *) (Msgs + nMsgs + 2), 0, (size_t) ((nmsgs - nMsgs) * sizeof *Msgs));
806 msh_ready (int msgnum, int full)
818 if ((fd = Msgs[msgnum].m_top) == NOTOK) {
819 if (numfds >= maxfds)
820 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++)
821 if (Msgs[msgp].m_top != NOTOK) {
822 close (Msgs[msgp].m_top);
823 Msgs[msgp].m_top = NOTOK;
828 if ((fd = open (cp = m_name (msgnum), O_RDONLY)) == NOTOK)
829 padios (cp, "unable to open message");
830 Msgs[msgnum].m_top = fd;
834 if ((fd = dup (fd)) == NOTOK)
835 padios ("cached message", "unable to dup");
836 if ((yp = fdopen (fd, "r")) == NULL)
837 padios (NULL, "unable to fdopen cached message");
838 fseek (yp, 0L, SEEK_SET);
842 m_eomsbr ((int (*)()) 0); /* XXX */
843 fseek (fp, Msgs[msgnum].m_start, SEEK_SET);
849 check_folder (int scansw)
851 int seqnum, i, low, hgh, msgp;
855 if (stat (mp->foldpath, &st) == NOTOK)
856 padios (mp->foldpath, "unable to stat");
857 if (mtime == st.st_mtime)
861 low = mp->hghmsg + 1;
862 folder_free (mp); /* free folder/message structure */
864 if (!(mp = folder_read (fmsh)))
865 padios (NULL, "unable to re-read folder %s", fmsh);
869 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++) {
870 if (Msgs[msgp].m_top != NOTOK) {
871 close (Msgs[msgp].m_top);
872 Msgs[msgp].m_top = NOTOK;
875 if (Msgs[msgp].m_scanl) {
876 free (Msgs[msgp].m_scanl);
877 Msgs[msgp].m_scanl = NULL;
883 if (modified || low > hgh)
887 if (fstat (fileno (fp), &st) == NOTOK)
888 padios (mp->foldpath, "unable to fstat");
889 if (mtime == st.st_mtime)
891 mode = (int) (st.st_mode & 0777);
894 if ((msgp = read_file (Msgs[mp->hghmsg].m_stop, mp->hghmsg + 1)) < 1)
895 padios (NULL, "no messages in %s", mp->foldpath); /* XXX */
896 if (msgp >= MAXFOLDER)
897 padios (NULL, "more than %d messages in %s", MAXFOLDER,
899 if (msgp <= mp->hghmsg)
902 if (!(mp = folder_realloc (mp, mp->lowoff, msgp)))
903 padios (NULL, "unable to allocate folder storage");
905 low = mp->hghmsg + 1, hgh = msgp;
906 seqnum = scansw ? seq_getnum (mp, "unseen") : -1;
907 for (i = mp->hghmsg + 1; i <= msgp; i++) {
910 add_sequence(mp, seqnum, i);
920 advise (NULL, "new messages have arrived!\007");
922 scanrange (low, hgh);
929 scanrange (int low, int hgh)
933 snprintf (buffer, sizeof(buffer), "%d-%d", low, hgh);
939 scanstring (char *arg)
941 char *cp, **ap, *vec[MAXARGS];
944 * This should be replace with a call to getarguments()
946 if ((cp = context_find (cmd_name = "scan"))) {
948 ap = brkstring (cp, " ", "\n");
949 ap = copyip (ap, vec, MAXARGS);
965 register int cur, seqnum, i=0, msgnum;
968 seq_setcur (mp, mp->lowmsg);
969 if (id <= 0 || (seqnum = seq_getnum (mp, "unseen")) == -1)
972 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
973 add_sequence(mp, seqnum, msgnum);
978 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
979 if (does_exist(mp, msgnum)) /* FIX */
980 if ((i = readid (msgnum)) > 0 && i < id) {
982 clear_sequence(mp, seqnum, msgnum);
985 for (i = mp->lowmsg; i < msgnum; i++)
986 clear_sequence(mp, seqnum, i);
988 if (cur > mp->hghmsg)
991 seq_setcur (mp, cur);
994 if ((gap = 1 < id && id < (i = readid (mp->lowmsg)) ? id : 0) && !vmh)
995 advise (NULL, "gap in ID:s, last seen %d, lowest present %d\n",
1004 char *bp, buf[BUFSIZ], name[NAMESZ];
1007 if (Msgs[msgnum].m_bboard_id)
1008 return Msgs[msgnum].m_bboard_id;
1010 zp = msh_ready (msgnum, 0);
1012 switch (state = m_getfld (state, name, buf, sizeof(buf), zp)) {
1016 if (!mh_strcasecmp (name, BBoard_ID)) {
1018 while (state == FLDPLUS) {
1019 state = m_getfld (state, name, buf, sizeof(buf), zp);
1025 return (Msgs[msgnum].m_bboard_id = i);
1029 while (state == FLDPLUS)
1030 state = m_getfld (state, name, buf, sizeof(buf), zp);
1031 if (state != FLDEOF)
1041 display_info (int scansw)
1045 interactive = isatty (fileno (stdout));
1047 if ((sd = dup (fileno (stdout))) == NOTOK)
1048 padios ("standard output", "unable to dup");
1050 ioctl (sd, FIOCLEX, NULL);
1051 #endif /* FIOCLEX */
1052 if ((sp = fdopen (sd, "w")) == NULL)
1053 padios ("standard output", "unable to fdopen");
1056 m_putenv ("mhfolder", mp->foldpath);
1061 printf ("Reading ");
1062 if (SOprintf ("%s", myname))
1063 printf ("%s", myname);
1064 printf (", currently at message %d of %d\n",
1065 mp->curmsg, mp->hghmsg);
1068 printf ("Reading ");
1070 printf ("+%s", fmsh);
1072 printf ("%s", mp->foldpath);
1073 printf (", currently at message %d of %d\n",
1074 mp->curmsg, mp->hghmsg);
1077 if (((seqnum = seq_getnum (mp, "unseen")) != -1)
1079 && in_sequence(mp, seqnum, mp->hghmsg))
1080 scanstring ("unseen");
1087 int i = 0, seqnum, msgnum;
1093 if ((seqnum = seq_getnum (mp, "unseen")) != -1)
1094 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
1095 if (!in_sequence(mp, seqnum, msgnum)) {
1096 if (Msgs[msgnum].m_bboard_id == 0)
1098 if ((i = Msgs[msgnum].m_bboard_id) > 0)
1102 snprintf (buffer, sizeof(buffer), "%d %d\n", i, Msgs[mp->hghmsg].m_bboard_id);
1103 write (pfd, buffer, sizeof(buffer));
1113 char *cp, tmpfil[BUFSIZ];
1114 char map1[BUFSIZ], map2[BUFSIZ];
1118 if (!(mp->msgflags & MODIFIED) || is_readonly(mp) || fmsh) {
1120 rc2peer (RC_FIN, 0, NULL);
1125 ttyNaux (NULLCMD, "FAST");
1127 if ((dp = lkfopen (mp->foldpath, "r")) == NULL) {
1128 advise (mp->foldpath, "unable to lock");
1135 if (fstat (fileno (dp), &st) == NOTOK) {
1136 advise (mp->foldpath, "unable to stat");
1139 if (mtime != st.st_mtime) {
1140 advise (NULL, "new messages have arrived, no update");
1143 mode = (int) (st.st_mode & 0777);
1145 if (mp->nummsg == 0) {
1146 cp = concat ("Zero file \"", mp->foldpath, "\"? ", NULL);
1147 if (getanswer (cp)) {
1148 if ((i = creat (mp->foldpath, mode)) != NOTOK)
1151 advise (mp->foldpath, "error zero'ing");
1152 unlink (map_name (mp->foldpath));/* XXX */
1157 cp = concat ("Update file \"", mp->foldpath, "\"? ", NULL);
1158 if (!getanswer (cp))
1160 strncpy (tmpfil, m_backup (mp->foldpath), sizeof(tmpfil));
1161 if ((md = mbx_open (tmpfil, mbx_style, st.st_uid, st.st_gid, mode)) == NOTOK) {
1162 advise (tmpfil, "unable to open");
1166 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1167 if (does_exist(mp, msgnum) && pack (tmpfil, md, msgnum) == NOTOK) {
1168 mbx_close (tmpfil, md);
1170 unlink (map_name (tmpfil));
1173 mbx_close (tmpfil, md);
1175 if (rename (tmpfil, mp->foldpath) == NOTOK)
1176 admonish (mp->foldpath, "unable to rename %s to", tmpfil);
1178 strncpy (map1, map_name (tmpfil), sizeof(map1));
1179 strncpy (map2, map_name (mp->foldpath), sizeof(map2));
1181 if (rename (map1, map2) == NOTOK) {
1182 admonish (map2, "unable to rename %s to", map1);
1191 lkfclose (dp, mp->foldpath);
1200 getargs (char *prompt, struct swit *sw, struct Cmd *cmdp)
1204 static char buffer[BUFSIZ];
1210 printf ("%s", prompt);
1213 for (cp = buffer; (i = getchar ()) != '\n';) {
1214 if (interrupted && !told_to_quit) {
1219 if (told_to_quit || i == EOF) {
1222 kill (ppid, SIGEMT);
1224 kill (ppid, SIGTERM);
1228 if (cp < &buffer[sizeof buffer - 2])
1235 if (buffer[0] == '?') {
1236 printf ("commands:\n");
1237 print_sw (ALL, sw, "", stdout);
1238 printf ("type CTRL-D or use ``quit'' to leave %s\n",
1243 if (parse (buffer, cmdp) == NOTOK)
1246 switch (i = smatch (cmdp->args[0], sw)) {
1248 ambigsw (cmdp->args[0], sw);
1251 printf ("say what: ``%s'' -- type ? (or help) for help\n",
1262 getcmds (struct swit *sw, struct Cmd *cmdp, int scansw)
1265 struct record rcs, *rc;
1271 switch (peer2rc (rc)) {
1273 pQRY (rc->rc_data, scansw);
1277 if ((i = pCMD (rc->rc_data, sw, cmdp)) != NOTOK)
1284 kill (ppid, SIGEMT);
1286 kill (ppid, SIGTERM);
1291 padios (NULL, "%s", rc->rc_data);
1294 fmt2peer (RC_ERR, "pLOOP protocol screw-up");
1301 parse (char *buffer, struct Cmd *cmdp)
1304 unsigned char c, *cp;
1308 pp = cmdp->args[argp++] = cmdp->line;
1309 cmdp->redirect = NULL;
1310 cmdp->direction = STDIO;
1311 cmdp->stream = NULL;
1313 for (cp = buffer; (c = *cp); cp++) {
1319 fmt2peer (RC_EOF, "null command");
1323 while ((c = *cp++)) {
1330 cmdp->args[argp++] = pp;
1337 switch (c = *cp++) {
1339 padvise (NULL, "unmatched \"");
1344 if ((c = *cp++) == 0)
1355 if ((c = *cp++) == 0) {
1357 padvise (NULL, "the newline character can not be quoted");
1367 if (pp == cmdp->line) {
1368 padvise (NULL, "invalid null command");
1371 if (*cmdp->args[argp - 1] == 0)
1373 cmdp->direction = c == '>' ? CRTIO : PIPIO;
1374 if (cmdp->direction == CRTIO && (c = *cp) == '>') {
1375 cmdp->direction = APPIO;
1378 cmdp->redirect = pp + 1;/* sigh */
1379 for (; (c = *cp); cp++)
1383 padvise (NULL, cmdp->direction != PIPIO
1384 ? "missing name for redirect"
1385 : "invalid null command");
1388 strcpy (cmdp->redirect, cp);
1389 if (cmdp->direction != PIPIO) {
1391 if (isspace (*cp)) {
1392 padvise (NULL, "bad name for redirect");
1395 if (expand (cmdp->redirect) == NOTOK)
1404 cmdp->args[argp] = NULL;
1411 expand (char *redirect)
1417 if (*redirect != '~')
1420 if ((cp = strchr(pp = redirect + 1, '/')))
1425 if ((pw = getpwnam (pp)))
1428 padvise (NULL, "unknown user: %s", pp);
1432 snprintf (path, sizeof(path), "%s/%s", pp, cp ? cp : "");
1433 strcpy (redirect, path);
1439 init_io (struct Cmd *cmdp, int vio)
1446 result = initaux_io (cmdp);
1454 initaux_io (struct Cmd *cmdp)
1458 switch (cmdp->direction) {
1464 mode = cmdp->direction == CRTIO ? "write" : "append";
1465 if ((cmdp->stream = fopen (cmdp->redirect, mode)) == NULL) {
1466 padvise (cmdp->redirect, "unable to %s ", mode);
1467 cmdp->direction = STDIO;
1473 if ((cmdp->stream = popen (cmdp->redirect, "w")) == NULL) {
1474 padvise (cmdp->redirect, "unable to pipe");
1475 cmdp->direction = STDIO;
1478 SIGNAL (SIGPIPE, pipeser);
1483 padios (NULL, "unknown redirection for command");
1487 if (dup2 (fileno (cmdp->stream), fileno (stdout)) == NOTOK)
1488 padios ("standard output", "unable to dup2");
1496 fin_io (struct Cmd *cmdp, int vio)
1508 finaux_io (struct Cmd *cmdp)
1510 switch (cmdp->direction) {
1517 close (fileno (stdout));
1518 if (ferror (stdout))
1519 padvise (NULL, "problems writing %s", cmdp->redirect);
1520 fclose (cmdp->stream);
1525 close (fileno (stdout));
1526 pclose (cmdp->stream);
1527 SIGNAL (SIGPIPE, SIG_DFL);
1531 padios (NULL, "unknown redirection for command");
1534 if (dup2 (fileno (sp), fileno (stdout)) == NOTOK)
1535 padios ("standard output", "unable to dup2");
1538 cmdp->direction = STDIO;
1547 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1548 unset_selected (mp, msgnum);
1549 mp->lowsel = mp->hghsel = mp->numsel = 0;
1557 folder_free (mp); /* free folder/message structure */
1563 seq_setcur (struct msgs *mp, int msgnum)
1565 if (mp->curmsg == msgnum)
1568 if (mp->curmsg && Msgs[mp->curmsg].m_scanl) {
1569 free (Msgs[mp->curmsg].m_scanl);
1570 Msgs[mp->curmsg].m_scanl = NULL;
1572 if (Msgs[msgnum].m_scanl) {
1573 free (Msgs[msgnum].m_scanl);
1574 Msgs[msgnum].m_scanl = NULL;
1577 mp->curmsg = msgnum;
1593 if (broken_pipe++ == 0)
1594 fprintf (stderr, "broken pipe\n");
1611 longjmp (peerenv, DONE);
1620 struct record rcs, *rc;
1625 switch (peer2rc (rc)) {
1628 while (isspace (*bp))
1630 if (sscanf (bp, "%d", &vrsn) != 1) {
1632 fmt2peer (RC_ERR, "bad init \"%s\"", rc->rc_data);
1635 if (vrsn != RC_VRSN) {
1636 fmt2peer (RC_ERR, "version %d unsupported", vrsn);
1640 while (*bp && !isspace (*bp))
1642 while (isspace (*bp))
1644 if (sscanf (bp, "%d", &numwins) != 1 || numwins <= 0)
1649 for (i = 1; i <= numwins; i++) {
1650 while (*bp && !isspace (*bp))
1652 while (isspace (*bp))
1654 if (sscanf (bp, "%d", &windows[i]) != 1 || windows[i] <= 0)
1657 rc2peer (RC_ACK, 0, NULL);
1661 padios (NULL, "%s", rc->rc_data);
1664 fmt2peer (RC_ERR, "pINI protocol screw-up");
1665 done (1); /* NOTREACHED */
1668 return 1; /* dead code to satisfy the compiler */
1673 pQRY (char *str, int scansw)
1675 if (pQRY1 (scansw) == NOTOK || pQRY2 () == NOTOK)
1678 rc2peer (RC_EOF, 0, NULL);
1687 static int lastlow = 0,
1692 oldhgh = mp->hghmsg;
1693 if (check_folder (scansw) && oldhgh < mp->hghmsg) {
1694 switch (winX (STATUS)) {
1699 printf ("new messages have arrived!");
1702 _exit (0); /* NOTREACHED */
1705 lastlow = lastcur = lasthgh = lastnum = 0;
1709 switch (winX (DISPLAY)) {
1714 scanrange (oldhgh + 1, mp->hghmsg);
1717 _exit (0); /* NOTREACHED */
1726 switch (winX (STATUS)) {
1731 printf ("%s: gap in ID:s, last seen %d, lowest present %d\n",
1732 myname ? myname : fmsh ? fmsh : mp->foldpath, gap - 1,
1733 readid (mp->lowmsg));
1736 _exit (0); /* NOTREACHED */
1743 if (mp->lowmsg != lastlow
1744 || mp->curmsg != lastcur
1745 || mp->hghmsg != lasthgh
1746 || mp->nummsg != lastnum)
1747 switch (winX (STATUS)) {
1755 _exit (0); /* NOTREACHED */
1758 lastlow = mp->lowmsg;
1759 lastcur = mp->curmsg;
1760 lasthgh = mp->hghmsg;
1761 lastnum = mp->nummsg;
1772 int i, j, k, msgnum, n;
1778 if (mp->nummsg == 0 && mp->nummsg != num)
1779 switch (winX (SCAN)) {
1787 _exit (0); /* NOTREACHED */
1796 j = (k = windows[SCAN]) / 2;
1797 for (msgnum = mp->curmsg; msgnum <= mp->hghmsg; msgnum++)
1798 if (does_exist (mp, msgnum))
1802 k = i >= k ? 1 : k - i;
1809 for (msgnum = mp->curmsg; msgnum >= mp->lowmsg; msgnum--)
1810 if (does_exist (mp, msgnum)) {
1817 for (msgnum = mp->curmsg + 1; msgnum <= mp->hghmsg; msgnum++)
1818 if (does_exist (mp, msgnum)) {
1822 if (n++ >= windows[SCAN])
1828 && does_exist (mp, lo)
1829 && does_exist (mp, hi)
1831 || (lo == mp->curmsg && lo == mp->lowmsg))
1833 || (hi == mp->curmsg && hi == mp->hghmsg))
1834 && hi - lo == j - i)
1837 if (mp->curmsg != cur || modified)
1838 switch (winN (NULLCMD, SCAN, 0)) {
1846 scanrange (lo = i, hi = j);
1857 pCMD (char *str, struct swit *sw, struct Cmd *cmdp)
1862 switch (winX (DISPLAY)) {
1867 printf ("commands:\n");
1868 print_sw (ALL, sw, "", stdout);
1869 printf ("type ``quit'' to leave %s\n", invo_name);
1872 _exit (0); /* NOTREACHED */
1875 rc2peer (RC_EOF, 0, NULL);
1879 if (parse (str, cmdp) == NOTOK)
1882 switch (i = smatch (cmdp->args[0], sw)) {
1884 switch (winX (DISPLAY)) {
1889 ambigsw (cmdp->args[0], sw);
1892 _exit (0); /* NOTREACHED */
1895 rc2peer (RC_EOF, 0, NULL);
1901 "say what: ``%s'' -- type ? (or help) for help",
1916 switch (setjmp (peerenv)) {
1918 SIGNAL (SIGALRM, alrmser);
1921 status = peerwait ();
1935 struct record rcs, *rc;
1940 switch (peer2rc (rc)) {
1943 rc2peer (RC_FIN, 0, NULL);
1947 advise (NULL, "%s", rc->rc_data);
1951 fmt2peer (RC_FIN, "pLOOP protocol screw-up");
1958 ttyNaux (struct Cmd *cmdp, char *s)
1960 struct record rcs, *rc;
1965 if (cmdp && init_io (cmdp, vmh) == NOTOK)
1968 /* XXX: fseek() too tricky for our own good */
1970 fseek (fp, 0L, SEEK_SET);
1973 switch (rc2rc (RC_TTY, s ? strlen (s) : 0, s, rc)) {
1975 vmhtty = OK; /* fall */
1980 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
1983 fmt2peer (RC_ERR, "pTTY protocol screw-up");
1984 done (1); /* NOTREACHED */
1988 SIGNAL (SIGTSTP, tstat);
1995 ttyR (struct Cmd *cmdp)
1997 struct record rcs, *rc;
2002 SIGNAL (SIGTSTP, SIG_IGN);
2014 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2016 rc2peer (RC_EOF, 0, NULL);
2020 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
2023 fmt2peer (RC_ERR, "pTTY protocol screw-up");
2024 done (1); /* NOTREACHED */
2027 return 1; /* dead code to satisfy compiler */
2032 winN (struct Cmd *cmdp, int n, int eof)
2035 char buffer[BUFSIZ];
2036 struct record rcs, *rc;
2039 if (vmhpid == NOTOK)
2044 /* XXX: fseek() too tricky for our own good */
2046 fseek (fp, 0L, SEEK_SET);
2050 snprintf (buffer, sizeof(buffer), "%d", n);
2051 switch (str2rc (RC_WIN, buffer, rc)) {
2059 padios (NULL, "%s", rc->rc_data);
2062 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2066 if (pipe (pd) == NOTOK) {
2067 err2peer (RC_ERR, "pipe", "unable to");
2071 switch (vmhpid = fork()) {
2073 err2peer (RC_ERR, "fork", "unable to");
2080 SIGNAL (SIGPIPE, SIG_IGN);
2081 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2082 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2090 advise (NULL, "%s", rc->rc_data);
2094 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2098 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2101 rc2peer (RC_EOF, 0, NULL);
2106 advise (NULL, "%s", rc->rc_data);
2111 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2116 err2peer (RC_ERR, "pipe", "error reading from");
2118 _exit (i != NOTOK ? i : 1);
2121 if ((vmhfd0 = dup (fileno (stdin))) == NOTOK)
2122 padios ("standard input", "unable to dup");
2123 if ((vmhfd1 = dup (fileno (stdout))) == NOTOK)
2124 padios ("standard output", "unable to dup");
2125 if ((vmhfd2 = dup (fileno (stderr))) == NOTOK)
2126 padios ("diagnostic output", "unable to dup");
2129 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2130 dup2 (i, fileno (stdin));
2135 if (dup2 (pd[1], fileno (stdout)) == NOTOK)
2136 padios ("standard output", "unable to dup2");
2140 if (dup2 (pd[1], fileno (stderr)) == NOTOK)
2141 padios ("diagnostic output", "unable to dup2");
2144 if (cmdp && init_io (cmdp, 0) == NOTOK)
2146 pstat = SIGNAL (SIGPIPE, pipeser);
2158 winR (struct Cmd *cmdp)
2168 if (dup2 (vmhfd0, fileno (stdin)) == NOTOK)
2169 padios ("standard input", "unable to dup2");
2174 if (dup2 (vmhfd1, fileno (stdout)) == NOTOK)
2175 padios ("standard output", "unable to dup2");
2180 if (dup2 (vmhfd2, fileno (stderr)) == NOTOK)
2181 padios ("diagnostic output", "unable to dup2");
2185 SIGNAL (SIGPIPE, pstat);
2187 if ((status = pidwait (vmhpid, OK)) == 2)
2191 return (status == 0 ? OK : NOTOK);
2199 char buffer[BUFSIZ];
2200 struct record rcs, *rc;
2205 /* XXX: fseek() too tricky for our own good */
2207 fseek (fp, 0L, SEEK_SET);
2209 snprintf (buffer, sizeof(buffer), "%d", n);
2210 switch (str2rc (RC_WIN, buffer, rc)) {
2218 padios (NULL, "%s", rc->rc_data);
2221 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2225 if (pipe (pd) == NOTOK) {
2226 err2peer (RC_ERR, "pipe", "unable to");
2230 switch (pid = fork ()) {
2232 err2peer (RC_ERR, "fork", "unable to");
2238 close (fileno (stdin));
2239 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2240 dup2 (i, fileno (stdin));
2243 dup2 (pd[1], fileno (stdout));
2244 dup2 (pd[1], fileno (stderr));
2252 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2253 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2263 padios (NULL, "%s", rc->rc_data);
2266 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2270 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2275 padios (NULL, "%s", rc->rc_data);
2278 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2282 err2peer (RC_ERR, "pipe", "error reading from");
2286 return (i != NOTOK ? pid : NOTOK);
2292 padios (char *what, char *fmt, ...)
2298 verr2peer (RC_FIN, what, fmt, ap);
2301 advertise (what, NULL, fmt, ap);
2310 padvise (char *what, char *fmt, ...)
2316 verr2peer (RC_ERR, what, fmt, ap);
2318 advertise (what, NULL, fmt, ap);