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>
28 #include <h/m_setjmp.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 void fsetup (char *);
158 FILE *msh_ready (int, int);
161 void display_info (int);
164 void seq_setcur (struct msgs *, int);
165 void padios (char *, char *, ...);
166 void padvise (char *, char *, ...);
172 static void msh (int);
173 static int read_map (char *, long);
174 static int read_file (long, int);
176 static void m_gMsgs (int);
177 FILE *msh_ready (int, int);
178 static int check_folder (int);
179 static void scanrange (int, int);
180 static void scanstring (char *);
181 static void write_ids (void);
182 static void quit (void);
183 static int getargs (char *, struct swit *, struct Cmd *);
184 static int getcmds (struct swit *, struct Cmd *, int);
185 static int parse (char *, struct Cmd *);
186 static int init_io (struct Cmd *, int);
187 static int initaux_io (struct Cmd *);
188 static void fin_io (struct Cmd *, int);
189 static void finaux_io (struct Cmd *);
190 static void m_init (void);
191 static void intrser (int);
192 static void pipeser (int);
193 static void quitser (int);
194 static void alrmser (int);
195 static int pINI (void);
196 static int pQRY (char *, int);
197 static int pQRY1 (int);
198 static int pQRY2 (void);
199 static int pCMD (char *, struct swit *, struct Cmd *);
200 static int pFIN (void);
201 static int peerwait (void);
202 static int ttyNaux (struct Cmd *, char *);
203 static int ttyR (struct Cmd *);
204 static int winN (struct Cmd *, int, int);
205 static int winR (struct Cmd *);
206 static int winX (int);
210 main (int argc, char **argv)
212 int id = 0, scansw = 0, vmh1 = 0, vmh2 = 0;
213 char *cp, *file = NULL, *folder = NULL;
214 char **argp, **arguments, buf[BUFSIZ];
217 setlocale(LC_ALL, "");
219 invo_name = r1bindex (argv[0], '/');
221 /* read user profile/context */
224 mts_init (invo_name);
225 arguments = getarguments (invo_name, argc,argv, 1);
228 while ((cp = *argp++)) {
230 switch (smatch (++cp, switches)) {
232 ambigsw (cp, switches);
235 adios (NULL, "-%s unknown", cp);
238 snprintf (buf, sizeof(buf), "%s [switches] file", invo_name);
239 print_help (buf, switches, 1);
242 print_version(invo_name);
246 if (!(cp = *argp++) || *cp == '-')
247 adios (NULL, "missing argument to %s", argp[-2]);
248 if ((id = atoi (cp)) < 1)
249 adios (NULL, "bad argument %s %s", argp[-2], cp);
252 if (!(cp = *argp++) || *cp == '-')
253 adios (NULL, "missing argument to %s", argp[-2]);
254 if ((pfd = atoi (cp)) <= 1)
255 adios (NULL, "bad argument %s %s", argp[-2], cp);
258 if (!(cp = *argp++) || *cp == '-')
259 adios (NULL, "missing argument to %s", argp[-2]);
260 if ((ppid = atoi (cp)) <= 1)
261 adios (NULL, "bad argument %s %s", argp[-2], cp);
264 if (!(myname = *argp++) || *myname == '-')
265 adios (NULL, "missing argument to %s", argp[-2]);
276 if (!(myprompt = *argp++) || *myprompt == '-')
277 adios (NULL, "missing argument to %s", argp[-2]);
281 if (!(cp = *argp++) || *cp == '-')
282 adios (NULL, "missing argument to %s", argp[-2]);
283 if ((vmh1 = atoi (cp)) < 1)
284 adios (NULL, "bad argument %s %s", argp[-2], cp);
287 if (!(cp = *argp++) || *cp == '-')
288 adios (NULL, "missing argument to %s", argp[-2]);
289 if ((vmh2 = atoi (cp)) < 1)
290 adios (NULL, "bad argument %s %s", argp[-2], cp);
294 if (!(cp = *argp++) || *cp == '-')
295 adios (NULL, "missing argument to %s", argp[-2]);
298 if (!(cp = *argp++) || *cp == '-')
299 adios (NULL, "missing argument to %s", argp[-2]);
309 if (*cp == '+' || *cp == '@') {
311 adios (NULL, "only one folder at a time!");
313 folder = pluspath (cp);
317 adios (NULL, "only one file at a time!");
322 if (!file && !folder)
325 adios (NULL, "use a file or a folder, not both");
326 strncpy (myfilter, etcpath (mhlforward), sizeof(myfilter));
329 ioctl (pfd, FIOCLEX, NULL);
332 istat = SIGNAL2 (SIGINT, intrser);
333 qstat = SIGNAL2 (SIGQUIT, quitser);
335 sc_width (); /* MAGIC... */
337 if ((vmh = vmh1 && vmh2)) {
340 SIGNAL (SIGINT, SIG_IGN);
341 SIGNAL (SIGQUIT, SIG_IGN);
343 tstat = SIGNAL (SIGTSTP, SIG_IGN);
352 display_info (id > 0 ? scansw : 0);
354 msh (id > 0 ? scansw : 0);
363 static struct swit mshcmds[] = {
428 register char *cp, **ap;
429 char prompt[BUFSIZ], *vec[MAXARGS];
431 register struct Cmd *cmdp;
432 static int once_only = ADVCMD;
434 snprintf (prompt, sizeof(prompt), myprompt, invo_name);
443 if ((i = getcmds (mshcmds, cmdp, scansw)) == EOF) {
448 check_folder (scansw);
449 if ((i = getargs (prompt, mshcmds, cmdp)) == EOF) {
454 cmd_name = mshcmds[i].sw;
462 if (once_only == ADVCMD)
463 once_only = i = SHOWCMD;
465 i = mp->curmsg != mp->hghmsg ? NEXTCMD : EXITCMD;
466 cmd_name = mshcmds[i].sw;
472 case FORWCMD: /* sigh */
482 if ((cp = context_find (cmd_name))) {
484 ap = brkstring (cp, " ", "\n");
485 ap = copyip (ap, vec, MAXARGS);
496 copyip (cmdp->args + 1, ap, MAXARGS);
500 if (!vmh && init_io (cmdp, vmh) == NOTOK) {
506 redirected = vmh || cmdp->direction != STDIO;
517 if (!vmh || ttyN (cmdp) != NOTOK)
518 forkcmd (vec, cmd_name);
522 if (!vmh || ttyN (cmdp) != NOTOK)
527 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
533 || (filehak (vec) == OK ? ttyN (cmdp)
534 : winN (cmdp, DISPLAY, 1)) != NOTOK)
539 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
544 if (!vmh || ttyN (cmdp) != NOTOK)
549 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
555 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
560 if (!vmh || ttyN (cmdp) != NOTOK)
567 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
573 || (packhak (vec) == OK ? ttyN (cmdp)
574 : winN (cmdp, DISPLAY, 1)) != NOTOK)
579 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
584 if (!vmh || ttyN (cmdp) != NOTOK)
589 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
594 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
599 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
604 padios (NULL, "no dispatch for %s", cmd_name);
626 fsetup (char *folder)
632 maildir = m_maildir (folder);
633 if (chdir (maildir) == NOTOK)
634 padios (maildir, "unable to change directory to");
636 /* read folder and create message structure */
637 if (!(mp = folder_read (folder)))
638 padios (NULL, "unable to read folder %s", folder);
640 /* check for empty folder */
642 padios (NULL, "no messages in %s", folder);
645 mtime = stat (mp->foldpath, &st) != NOTOK ? st.st_mtime : 0;
647 m_gMsgs (mp->hghmsg);
649 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
650 Msgs[msgnum].m_bboard_id = 0;
651 Msgs[msgnum].m_top = NOTOK;
652 Msgs[msgnum].m_start = Msgs[msgnum].m_stop = 0L;
653 Msgs[msgnum].m_scanl = NULL;
658 fmsh = getcpy (folder);
660 maxfds = OPEN_MAX / 2;
662 if ((maxfds -= 2) < 1)
672 if ((fp = fopen (file, "r")) == NULL)
673 padios (file, "unable to read");
675 ioctl (fileno (fp), FIOCLEX, NULL);
677 if (fstat (fileno (fp), &st) != NOTOK) {
678 mode = (int) (st.st_mode & 0777), mtime = st.st_mtime;
679 msgp = read_map (file, (long) st.st_size);
682 mode = m_gmprot (), mtime = 0;
686 if ((msgp = read_file (msgp ? Msgs[msgp].m_stop : 0L, msgp + 1)) < 1)
687 padios (NULL, "no messages in %s", myname ? myname : file);
689 if (!(mp = (struct msgs *) calloc ((size_t) 1, sizeof(*mp))))
690 padios (NULL, "unable to allocate folder storage");
692 if (!(mp->msgstats = calloc ((size_t) msgp + 3, sizeof(*(mp->msgstats)))))
693 padios (NULL, "unable to allocate message status storage");
699 mp->foldpath = getcpy (myname ? myname : file);
700 clear_folder_flags (mp);
703 if (st.st_uid != getuid () || access (file, W_OK) == NOTOK)
707 mp->hghoff = mp->hghmsg + 1;
709 for (i = mp->lowmsg; i <= mp->hghmsg; i++) {
710 clear_msg_flags (mp, i);
715 mp->msgattrs[0] = getcpy ("unseen");
716 mp->msgattrs[1] = NULL;
718 m_unknown (fp); /* the MAGIC invocation */
727 read_map (char *file, long size)
729 register int i, msgp;
730 register struct drop *dp, *mp;
733 if ((i = map_read (file, size, &rp, 1)) == 0)
739 for (dp = rp + 1; i-- > 0; msgp++, dp++) {
740 mp = &Msgs[msgp].m_drop;
742 mp->d_size = dp->d_size;
743 mp->d_start = dp->d_start;
744 mp->d_stop = dp->d_stop;
745 Msgs[msgp].m_scanl = NULL;
754 read_file (long pos, int msgp)
757 register struct drop *dp, *mp;
760 if ((i = mbx_read (fp, pos, &rp, 1)) <= 0)
763 m_gMsgs ((msgp - 1) + i);
765 for (dp = rp; i-- > 0; msgp++, dp++) {
766 mp = &Msgs[msgp].m_drop;
768 mp->d_size = dp->d_size;
769 mp->d_start = dp->d_start;
770 mp->d_stop = dp->d_stop;
771 Msgs[msgp].m_scanl = NULL;
785 nMsgs = n + MAXFOLDER / 2;
786 Msgs = (struct Msg *) calloc ((size_t) (nMsgs + 2), sizeof *Msgs);
788 padios (NULL, "unable to allocate Msgs structure");
795 nmsgs = nMsgs + n + MAXFOLDER / 2;
796 Msgs = (struct Msg *) mh_xrealloc ((char *) Msgs, (size_t) (nmsgs + 2) * sizeof *Msgs);
797 memset((char *) (Msgs + nMsgs + 2), 0, (size_t) ((nmsgs - nMsgs) * sizeof *Msgs));
804 msh_ready (int msgnum, int full)
817 if ((fd = Msgs[msgnum].m_top) == NOTOK) {
818 if (numfds >= maxfds)
819 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++)
820 if (Msgs[msgp].m_top != NOTOK) {
821 close (Msgs[msgp].m_top);
822 Msgs[msgp].m_top = NOTOK;
827 if ((fd = open (cp = m_name (msgnum), O_RDONLY)) == NOTOK)
828 padios (cp, "unable to open message");
829 Msgs[msgnum].m_top = fd;
833 if ((fd = dup (fd)) == NOTOK)
834 padios ("cached message", "unable to dup");
835 if ((yp = fdopen (fd, "r")) == NULL)
836 padios (NULL, "unable to fdopen cached message");
837 fseek (yp, 0L, SEEK_SET);
841 m_eomsbr ((int (*)()) 0); /* XXX */
842 fseek (fp, Msgs[msgnum].m_start, SEEK_SET);
848 check_folder (int scansw)
850 int seqnum, i, low, hgh, msgp;
854 if (stat (mp->foldpath, &st) == NOTOK)
855 padios (mp->foldpath, "unable to stat");
856 if (mtime == st.st_mtime)
860 low = mp->hghmsg + 1;
861 folder_free (mp); /* free folder/message structure */
863 if (!(mp = folder_read (fmsh)))
864 padios (NULL, "unable to re-read folder %s", fmsh);
868 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++) {
869 if (Msgs[msgp].m_top != NOTOK) {
870 close (Msgs[msgp].m_top);
871 Msgs[msgp].m_top = NOTOK;
874 if (Msgs[msgp].m_scanl) {
875 free (Msgs[msgp].m_scanl);
876 Msgs[msgp].m_scanl = NULL;
882 if (modified || low > hgh)
886 if (fstat (fileno (fp), &st) == NOTOK)
887 padios (mp->foldpath, "unable to fstat");
888 if (mtime == st.st_mtime)
890 mode = (int) (st.st_mode & 0777);
893 if ((msgp = read_file (Msgs[mp->hghmsg].m_stop, mp->hghmsg + 1)) < 1)
894 padios (NULL, "no messages in %s", mp->foldpath); /* XXX */
895 if (msgp >= MAXFOLDER)
896 padios (NULL, "more than %d messages in %s", MAXFOLDER,
898 if (msgp <= mp->hghmsg)
901 if (!(mp = folder_realloc (mp, mp->lowoff, msgp)))
902 padios (NULL, "unable to allocate folder storage");
904 low = mp->hghmsg + 1, hgh = msgp;
905 seqnum = scansw ? seq_getnum (mp, "unseen") : -1;
906 for (i = mp->hghmsg + 1; i <= msgp; i++) {
909 add_sequence(mp, seqnum, i);
919 advise (NULL, "new messages have arrived!\007");
921 scanrange (low, hgh);
928 scanrange (int low, int hgh)
932 snprintf (buffer, sizeof(buffer), "%d-%d", low, hgh);
938 scanstring (char *arg)
940 char *cp, **ap, *vec[MAXARGS];
943 * This should be replace with a call to getarguments()
945 if ((cp = context_find (cmd_name = "scan"))) {
947 ap = brkstring (cp, " ", "\n");
948 ap = copyip (ap, vec, MAXARGS);
964 register int cur, seqnum, i=0, msgnum;
967 seq_setcur (mp, mp->lowmsg);
968 if (id <= 0 || (seqnum = seq_getnum (mp, "unseen")) == -1)
971 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
972 add_sequence(mp, seqnum, msgnum);
977 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
978 if (does_exist(mp, msgnum)) /* FIX */
979 if ((i = readid (msgnum)) > 0 && i < id) {
981 clear_sequence(mp, seqnum, msgnum);
984 for (i = mp->lowmsg; i < msgnum; i++)
985 clear_sequence(mp, seqnum, i);
987 if (cur > mp->hghmsg)
990 seq_setcur (mp, cur);
993 if ((gap = 1 < id && id < (i = readid (mp->lowmsg)) ? id : 0) && !vmh)
994 advise (NULL, "gap in ID:s, last seen %d, lowest present %d\n",
1003 char *bp, buf[BUFSIZ], name[NAMESZ];
1006 if (Msgs[msgnum].m_bboard_id)
1007 return Msgs[msgnum].m_bboard_id;
1009 zp = msh_ready (msgnum, 0);
1011 switch (state = m_getfld (state, name, buf, sizeof(buf), zp)) {
1015 if (!mh_strcasecmp (name, BBoard_ID)) {
1017 while (state == FLDPLUS) {
1018 state = m_getfld (state, name, buf, sizeof(buf), zp);
1024 return (Msgs[msgnum].m_bboard_id = i);
1028 while (state == FLDPLUS)
1029 state = m_getfld (state, name, buf, sizeof(buf), zp);
1030 if (state != FLDEOF)
1040 display_info (int scansw)
1044 interactive = isatty (fileno (stdout));
1046 if ((sd = dup (fileno (stdout))) == NOTOK)
1047 padios ("standard output", "unable to dup");
1049 ioctl (sd, FIOCLEX, NULL);
1050 #endif /* FIOCLEX */
1051 if ((sp = fdopen (sd, "w")) == NULL)
1052 padios ("standard output", "unable to fdopen");
1055 m_putenv ("mhfolder", mp->foldpath);
1060 printf ("Reading ");
1061 if (SOprintf ("%s", myname))
1062 printf ("%s", myname);
1063 printf (", currently at message %d of %d\n",
1064 mp->curmsg, mp->hghmsg);
1067 printf ("Reading ");
1069 printf ("+%s", fmsh);
1071 printf ("%s", mp->foldpath);
1072 printf (", currently at message %d of %d\n",
1073 mp->curmsg, mp->hghmsg);
1076 if (((seqnum = seq_getnum (mp, "unseen")) != -1)
1078 && in_sequence(mp, seqnum, mp->hghmsg))
1079 scanstring ("unseen");
1086 int i = 0, seqnum, msgnum;
1092 if ((seqnum = seq_getnum (mp, "unseen")) != -1)
1093 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
1094 if (!in_sequence(mp, seqnum, msgnum)) {
1095 if (Msgs[msgnum].m_bboard_id == 0)
1097 if ((i = Msgs[msgnum].m_bboard_id) > 0)
1101 snprintf (buffer, sizeof(buffer), "%d %d\n", i, Msgs[mp->hghmsg].m_bboard_id);
1102 write (pfd, buffer, sizeof(buffer));
1112 char *cp, tmpfil[BUFSIZ];
1113 char map1[BUFSIZ], map2[BUFSIZ];
1117 if (!(mp->msgflags & MODIFIED) || is_readonly(mp) || fmsh) {
1119 rc2peer (RC_FIN, 0, NULL);
1124 ttyNaux (NULLCMD, "FAST");
1126 if ((dp = lkfopen (mp->foldpath, "r")) == NULL) {
1127 advise (mp->foldpath, "unable to lock");
1134 if (fstat (fileno (dp), &st) == NOTOK) {
1135 advise (mp->foldpath, "unable to stat");
1138 if (mtime != st.st_mtime) {
1139 advise (NULL, "new messages have arrived, no update");
1142 mode = (int) (st.st_mode & 0777);
1144 if (mp->nummsg == 0) {
1145 cp = concat ("Zero file \"", mp->foldpath, "\"? ", NULL);
1146 if (getanswer (cp)) {
1147 if ((i = creat (mp->foldpath, mode)) != NOTOK)
1150 advise (mp->foldpath, "error zero'ing");
1151 unlink (map_name (mp->foldpath));/* XXX */
1156 cp = concat ("Update file \"", mp->foldpath, "\"? ", NULL);
1157 if (!getanswer (cp))
1159 strncpy (tmpfil, m_backup (mp->foldpath), sizeof(tmpfil));
1160 if ((md = mbx_open (tmpfil, mbx_style, st.st_uid, st.st_gid, mode)) == NOTOK) {
1161 advise (tmpfil, "unable to open");
1165 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1166 if (does_exist(mp, msgnum) && pack (tmpfil, md, msgnum) == NOTOK) {
1167 mbx_close (tmpfil, md);
1169 unlink (map_name (tmpfil));
1172 mbx_close (tmpfil, md);
1174 if (rename (tmpfil, mp->foldpath) == NOTOK)
1175 admonish (mp->foldpath, "unable to rename %s to", tmpfil);
1177 strncpy (map1, map_name (tmpfil), sizeof(map1));
1178 strncpy (map2, map_name (mp->foldpath), sizeof(map2));
1180 if (rename (map1, map2) == NOTOK) {
1181 admonish (map2, "unable to rename %s to", map1);
1190 lkfclose (dp, mp->foldpath);
1199 getargs (char *prompt, struct swit *sw, struct Cmd *cmdp)
1203 static char buffer[BUFSIZ];
1209 printf ("%s", prompt);
1212 for (cp = buffer; (i = getchar ()) != '\n';) {
1213 if (interrupted && !told_to_quit) {
1218 if (told_to_quit || i == EOF) {
1221 kill (ppid, SIGEMT);
1223 kill (ppid, SIGTERM);
1227 if (cp < &buffer[sizeof buffer - 2])
1234 if (buffer[0] == '?') {
1235 printf ("commands:\n");
1236 print_sw (ALL, sw, "", stdout);
1237 printf ("type CTRL-D or use ``quit'' to leave %s\n",
1242 if (parse (buffer, cmdp) == NOTOK)
1245 switch (i = smatch (cmdp->args[0], sw)) {
1247 ambigsw (cmdp->args[0], sw);
1250 printf ("say what: ``%s'' -- type ? (or help) for help\n",
1261 getcmds (struct swit *sw, struct Cmd *cmdp, int scansw)
1264 struct record rcs, *rc;
1270 switch (peer2rc (rc)) {
1272 pQRY (rc->rc_data, scansw);
1276 if ((i = pCMD (rc->rc_data, sw, cmdp)) != NOTOK)
1283 kill (ppid, SIGEMT);
1285 kill (ppid, SIGTERM);
1290 padios (NULL, "%s", rc->rc_data);
1293 fmt2peer (RC_ERR, "pLOOP protocol screw-up");
1300 parse (char *buffer, struct Cmd *cmdp)
1303 unsigned char c, *cp;
1307 pp = cmdp->args[argp++] = cmdp->line;
1308 cmdp->redirect = NULL;
1309 cmdp->direction = STDIO;
1310 cmdp->stream = NULL;
1312 for (cp = buffer; (c = *cp); cp++) {
1318 fmt2peer (RC_EOF, "null command");
1322 while ((c = *cp++)) {
1329 cmdp->args[argp++] = pp;
1336 switch (c = *cp++) {
1338 padvise (NULL, "unmatched \"");
1343 if ((c = *cp++) == 0)
1354 if ((c = *cp++) == 0) {
1356 padvise (NULL, "the newline character can not be quoted");
1366 if (pp == cmdp->line) {
1367 padvise (NULL, "invalid null command");
1370 if (*cmdp->args[argp - 1] == 0)
1372 cmdp->direction = c == '>' ? CRTIO : PIPIO;
1373 if (cmdp->direction == CRTIO && (c = *cp) == '>') {
1374 cmdp->direction = APPIO;
1377 cmdp->redirect = pp + 1;/* sigh */
1378 for (; (c = *cp); cp++)
1382 padvise (NULL, cmdp->direction != PIPIO
1383 ? "missing name for redirect"
1384 : "invalid null command");
1387 strcpy (cmdp->redirect, cp);
1388 if (cmdp->direction != PIPIO) {
1390 if (isspace (*cp)) {
1391 padvise (NULL, "bad name for redirect");
1394 if (expand (cmdp->redirect) == NOTOK)
1403 cmdp->args[argp] = NULL;
1410 expand (char *redirect)
1416 if (*redirect != '~')
1419 if ((cp = strchr(pp = redirect + 1, '/')))
1424 if ((pw = getpwnam (pp)))
1427 padvise (NULL, "unknown user: %s", pp);
1431 snprintf (path, sizeof(path), "%s/%s", pp, cp ? cp : "");
1432 strcpy (redirect, path);
1438 init_io (struct Cmd *cmdp, int vio)
1445 result = initaux_io (cmdp);
1453 initaux_io (struct Cmd *cmdp)
1457 switch (cmdp->direction) {
1463 mode = cmdp->direction == CRTIO ? "write" : "append";
1464 if ((cmdp->stream = fopen (cmdp->redirect, mode)) == NULL) {
1465 padvise (cmdp->redirect, "unable to %s ", mode);
1466 cmdp->direction = STDIO;
1472 if ((cmdp->stream = popen (cmdp->redirect, "w")) == NULL) {
1473 padvise (cmdp->redirect, "unable to pipe");
1474 cmdp->direction = STDIO;
1477 SIGNAL (SIGPIPE, pipeser);
1482 padios (NULL, "unknown redirection for command");
1486 if (dup2 (fileno (cmdp->stream), fileno (stdout)) == NOTOK)
1487 padios ("standard output", "unable to dup2");
1495 fin_io (struct Cmd *cmdp, int vio)
1507 finaux_io (struct Cmd *cmdp)
1509 switch (cmdp->direction) {
1516 close (fileno (stdout));
1517 if (ferror (stdout))
1518 padvise (NULL, "problems writing %s", cmdp->redirect);
1519 fclose (cmdp->stream);
1524 close (fileno (stdout));
1525 pclose (cmdp->stream);
1526 SIGNAL (SIGPIPE, SIG_DFL);
1530 padios (NULL, "unknown redirection for command");
1533 if (dup2 (fileno (sp), fileno (stdout)) == NOTOK)
1534 padios ("standard output", "unable to dup2");
1537 cmdp->direction = STDIO;
1546 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1547 unset_selected (mp, msgnum);
1548 mp->lowsel = mp->hghsel = mp->numsel = 0;
1556 folder_free (mp); /* free folder/message structure */
1562 seq_setcur (struct msgs *mp, int msgnum)
1564 if (mp->curmsg == msgnum)
1567 if (mp->curmsg && Msgs[mp->curmsg].m_scanl) {
1568 free (Msgs[mp->curmsg].m_scanl);
1569 Msgs[mp->curmsg].m_scanl = NULL;
1571 if (Msgs[msgnum].m_scanl) {
1572 free (Msgs[msgnum].m_scanl);
1573 Msgs[msgnum].m_scanl = NULL;
1576 mp->curmsg = msgnum;
1594 if (broken_pipe++ == 0)
1595 fprintf (stderr, "broken pipe\n");
1614 longjmp (peerenv, DONE);
1623 struct record rcs, *rc;
1628 switch (peer2rc (rc)) {
1631 while (isspace (*bp))
1633 if (sscanf (bp, "%d", &vrsn) != 1) {
1635 fmt2peer (RC_ERR, "bad init \"%s\"", rc->rc_data);
1638 if (vrsn != RC_VRSN) {
1639 fmt2peer (RC_ERR, "version %d unsupported", vrsn);
1643 while (*bp && !isspace (*bp))
1645 while (isspace (*bp))
1647 if (sscanf (bp, "%d", &numwins) != 1 || numwins <= 0)
1652 for (i = 1; i <= numwins; i++) {
1653 while (*bp && !isspace (*bp))
1655 while (isspace (*bp))
1657 if (sscanf (bp, "%d", &windows[i]) != 1 || windows[i] <= 0)
1660 rc2peer (RC_ACK, 0, NULL);
1664 padios (NULL, "%s", rc->rc_data);
1667 fmt2peer (RC_ERR, "pINI protocol screw-up");
1668 done (1); /* NOTREACHED */
1671 return 1; /* dead code to satisfy the compiler */
1676 pQRY (char *str, int scansw)
1679 if (pQRY1 (scansw) == NOTOK || pQRY2 () == NOTOK)
1682 rc2peer (RC_EOF, 0, NULL);
1691 static int lastlow = 0,
1696 oldhgh = mp->hghmsg;
1697 if (check_folder (scansw) && oldhgh < mp->hghmsg) {
1698 switch (winX (STATUS)) {
1703 printf ("new messages have arrived!");
1706 _exit (0); /* NOTREACHED */
1709 lastlow = lastcur = lasthgh = lastnum = 0;
1713 switch (winX (DISPLAY)) {
1718 scanrange (oldhgh + 1, mp->hghmsg);
1721 _exit (0); /* NOTREACHED */
1730 switch (winX (STATUS)) {
1735 printf ("%s: gap in ID:s, last seen %d, lowest present %d\n",
1736 myname ? myname : fmsh ? fmsh : mp->foldpath, gap - 1,
1737 readid (mp->lowmsg));
1740 _exit (0); /* NOTREACHED */
1747 if (mp->lowmsg != lastlow
1748 || mp->curmsg != lastcur
1749 || mp->hghmsg != lasthgh
1750 || mp->nummsg != lastnum)
1751 switch (winX (STATUS)) {
1759 _exit (0); /* NOTREACHED */
1762 lastlow = mp->lowmsg;
1763 lastcur = mp->curmsg;
1764 lasthgh = mp->hghmsg;
1765 lastnum = mp->nummsg;
1776 int i, j, k, msgnum, n;
1782 if (mp->nummsg == 0 && mp->nummsg != num)
1783 switch (winX (SCAN)) {
1791 _exit (0); /* NOTREACHED */
1800 j = (k = windows[SCAN]) / 2;
1801 for (msgnum = mp->curmsg; msgnum <= mp->hghmsg; msgnum++)
1802 if (does_exist (mp, msgnum))
1806 k = i >= k ? 1 : k - i;
1813 for (msgnum = mp->curmsg; msgnum >= mp->lowmsg; msgnum--)
1814 if (does_exist (mp, msgnum)) {
1821 for (msgnum = mp->curmsg + 1; msgnum <= mp->hghmsg; msgnum++)
1822 if (does_exist (mp, msgnum)) {
1826 if (n++ >= windows[SCAN])
1832 && does_exist (mp, lo)
1833 && does_exist (mp, hi)
1835 || (lo == mp->curmsg && lo == mp->lowmsg))
1837 || (hi == mp->curmsg && hi == mp->hghmsg))
1838 && hi - lo == j - i)
1841 if (mp->curmsg != cur || modified)
1842 switch (winN (NULLCMD, SCAN, 0)) {
1850 scanrange (lo = i, hi = j);
1861 pCMD (char *str, struct swit *sw, struct Cmd *cmdp)
1866 switch (winX (DISPLAY)) {
1871 printf ("commands:\n");
1872 print_sw (ALL, sw, "", stdout);
1873 printf ("type ``quit'' to leave %s\n", invo_name);
1876 _exit (0); /* NOTREACHED */
1879 rc2peer (RC_EOF, 0, NULL);
1883 if (parse (str, cmdp) == NOTOK)
1886 switch (i = smatch (cmdp->args[0], sw)) {
1888 switch (winX (DISPLAY)) {
1893 ambigsw (cmdp->args[0], sw);
1896 _exit (0); /* NOTREACHED */
1899 rc2peer (RC_EOF, 0, NULL);
1905 "say what: ``%s'' -- type ? (or help) for help",
1920 switch (m_setjmp (peerenv)) {
1922 SIGNAL (SIGALRM, alrmser);
1925 status = peerwait ();
1939 struct record rcs, *rc;
1944 switch (peer2rc (rc)) {
1947 rc2peer (RC_FIN, 0, NULL);
1951 advise (NULL, "%s", rc->rc_data);
1955 fmt2peer (RC_FIN, "pLOOP protocol screw-up");
1962 ttyNaux (struct Cmd *cmdp, char *s)
1964 struct record rcs, *rc;
1969 if (cmdp && init_io (cmdp, vmh) == NOTOK)
1972 /* XXX: fseek() too tricky for our own good */
1974 fseek (fp, 0L, SEEK_SET);
1977 switch (rc2rc (RC_TTY, s ? strlen (s) : 0, s, rc)) {
1979 vmhtty = OK; /* fall */
1984 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
1987 fmt2peer (RC_ERR, "pTTY protocol screw-up");
1988 done (1); /* NOTREACHED */
1992 SIGNAL (SIGTSTP, tstat);
1999 ttyR (struct Cmd *cmdp)
2001 struct record rcs, *rc;
2006 SIGNAL (SIGTSTP, SIG_IGN);
2018 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2020 rc2peer (RC_EOF, 0, NULL);
2024 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
2027 fmt2peer (RC_ERR, "pTTY protocol screw-up");
2028 done (1); /* NOTREACHED */
2031 return 1; /* dead code to satisfy compiler */
2036 winN (struct Cmd *cmdp, int n, int eof)
2039 char buffer[BUFSIZ];
2040 struct record rcs, *rc;
2043 if (vmhpid == NOTOK)
2048 /* XXX: fseek() too tricky for our own good */
2050 fseek (fp, 0L, SEEK_SET);
2054 snprintf (buffer, sizeof(buffer), "%d", n);
2055 switch (str2rc (RC_WIN, buffer, rc)) {
2063 padios (NULL, "%s", rc->rc_data);
2066 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2070 if (pipe (pd) == NOTOK) {
2071 err2peer (RC_ERR, "pipe", "unable to");
2075 switch (vmhpid = fork()) {
2077 err2peer (RC_ERR, "fork", "unable to");
2084 SIGNAL (SIGPIPE, SIG_IGN);
2085 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2086 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2094 advise (NULL, "%s", rc->rc_data);
2098 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2102 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2105 rc2peer (RC_EOF, 0, NULL);
2110 advise (NULL, "%s", rc->rc_data);
2115 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2120 err2peer (RC_ERR, "pipe", "error reading from");
2122 _exit (i != NOTOK ? i : 1);
2125 if ((vmhfd0 = dup (fileno (stdin))) == NOTOK)
2126 padios ("standard input", "unable to dup");
2127 if ((vmhfd1 = dup (fileno (stdout))) == NOTOK)
2128 padios ("standard output", "unable to dup");
2129 if ((vmhfd2 = dup (fileno (stderr))) == NOTOK)
2130 padios ("diagnostic output", "unable to dup");
2133 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2134 dup2 (i, fileno (stdin));
2139 if (dup2 (pd[1], fileno (stdout)) == NOTOK)
2140 padios ("standard output", "unable to dup2");
2144 if (dup2 (pd[1], fileno (stderr)) == NOTOK)
2145 padios ("diagnostic output", "unable to dup2");
2148 if (cmdp && init_io (cmdp, 0) == NOTOK)
2150 pstat = SIGNAL (SIGPIPE, pipeser);
2162 winR (struct Cmd *cmdp)
2172 if (dup2 (vmhfd0, fileno (stdin)) == NOTOK)
2173 padios ("standard input", "unable to dup2");
2178 if (dup2 (vmhfd1, fileno (stdout)) == NOTOK)
2179 padios ("standard output", "unable to dup2");
2184 if (dup2 (vmhfd2, fileno (stderr)) == NOTOK)
2185 padios ("diagnostic output", "unable to dup2");
2189 SIGNAL (SIGPIPE, pstat);
2191 if ((status = pidwait (vmhpid, OK)) == 2)
2195 return (status == 0 ? OK : NOTOK);
2203 char buffer[BUFSIZ];
2204 struct record rcs, *rc;
2209 /* XXX: fseek() too tricky for our own good */
2211 fseek (fp, 0L, SEEK_SET);
2213 snprintf (buffer, sizeof(buffer), "%d", n);
2214 switch (str2rc (RC_WIN, buffer, rc)) {
2222 padios (NULL, "%s", rc->rc_data);
2225 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2229 if (pipe (pd) == NOTOK) {
2230 err2peer (RC_ERR, "pipe", "unable to");
2234 switch (pid = fork ()) {
2236 err2peer (RC_ERR, "fork", "unable to");
2242 close (fileno (stdin));
2243 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2244 dup2 (i, fileno (stdin));
2247 dup2 (pd[1], fileno (stdout));
2248 dup2 (pd[1], fileno (stderr));
2256 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2257 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2267 padios (NULL, "%s", rc->rc_data);
2270 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2274 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2279 padios (NULL, "%s", rc->rc_data);
2282 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2286 err2peer (RC_ERR, "pipe", "error reading from");
2290 return (i != NOTOK ? pid : NOTOK);
2296 padios (char *what, char *fmt, ...)
2302 verr2peer (RC_FIN, what, fmt, ap);
2305 advertise (what, NULL, fmt, ap);
2314 padvise (char *what, char *fmt, ...)
2320 verr2peer (RC_ERR, what, fmt, ap);
2322 advertise (what, NULL, fmt, ap);