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 */
154 int should_intr; /* signal handler should interrupt call */
155 jmp_buf sigenv; /* the environment pointer */
161 int SOprintf (char *, ...); /* from termsbr.c */
162 int sc_width (void); /* from termsbr.c */
163 void fsetup (char *);
165 FILE *msh_ready (int, int);
168 void display_info (int);
171 void seq_setcur (struct msgs *, int);
172 void padios (char *, char *, ...);
173 void padvise (char *, char *, ...);
179 static void msh (int);
180 static int read_map (char *, long);
181 static int read_file (long, int);
183 static void m_gMsgs (int);
184 FILE *msh_ready (int, int);
185 static int check_folder (int);
186 static void scanrange (int, int);
187 static void scanstring (char *);
188 static void write_ids (void);
189 static void quit (void);
190 static int getargs (char *, struct swit *, struct Cmd *);
191 static int getcmds (struct swit *, struct Cmd *, int);
192 static int parse (char *, struct Cmd *);
193 static int init_io (struct Cmd *, int);
194 static int initaux_io (struct Cmd *);
195 static void fin_io (struct Cmd *, int);
196 static void finaux_io (struct Cmd *);
197 static void m_init (void);
198 static void intrser (int);
199 static void pipeser (int);
200 static void quitser (int);
201 static void alrmser (int);
202 static int pINI (void);
203 static int pQRY (char *, int);
204 static int pQRY1 (int);
205 static int pQRY2 (void);
206 static int pCMD (char *, struct swit *, struct Cmd *);
207 static int pFIN (void);
208 static int peerwait (void);
209 static int ttyNaux (struct Cmd *, char *);
210 static int ttyR (struct Cmd *);
211 static int winN (struct Cmd *, int, int);
212 static int winR (struct Cmd *);
213 static int winX (int);
217 main (int argc, char **argv)
219 int id = 0, scansw = 0, vmh1 = 0, vmh2 = 0;
220 char *cp, *file = NULL, *folder = NULL;
221 char **argp, **arguments, buf[BUFSIZ];
224 setlocale(LC_ALL, "");
226 invo_name = r1bindex (argv[0], '/');
228 /* read user profile/context */
231 mts_init (invo_name);
232 arguments = getarguments (invo_name, argc,argv, 1);
235 while ((cp = *argp++)) {
237 switch (smatch (++cp, switches)) {
239 ambigsw (cp, switches);
242 adios (NULL, "-%s unknown", cp);
245 snprintf (buf, sizeof(buf), "%s [switches] file", invo_name);
246 print_help (buf, switches, 1);
249 print_version(invo_name);
253 if (!(cp = *argp++) || *cp == '-')
254 adios (NULL, "missing argument to %s", argp[-2]);
255 if ((id = atoi (cp)) < 1)
256 adios (NULL, "bad argument %s %s", argp[-2], cp);
259 if (!(cp = *argp++) || *cp == '-')
260 adios (NULL, "missing argument to %s", argp[-2]);
261 if ((pfd = atoi (cp)) <= 1)
262 adios (NULL, "bad argument %s %s", argp[-2], cp);
265 if (!(cp = *argp++) || *cp == '-')
266 adios (NULL, "missing argument to %s", argp[-2]);
267 if ((ppid = atoi (cp)) <= 1)
268 adios (NULL, "bad argument %s %s", argp[-2], cp);
271 if (!(myname = *argp++) || *myname == '-')
272 adios (NULL, "missing argument to %s", argp[-2]);
283 if (!(myprompt = *argp++) || *myprompt == '-')
284 adios (NULL, "missing argument to %s", argp[-2]);
288 if (!(cp = *argp++) || *cp == '-')
289 adios (NULL, "missing argument to %s", argp[-2]);
290 if ((vmh1 = atoi (cp)) < 1)
291 adios (NULL, "bad argument %s %s", argp[-2], cp);
294 if (!(cp = *argp++) || *cp == '-')
295 adios (NULL, "missing argument to %s", argp[-2]);
296 if ((vmh2 = atoi (cp)) < 1)
297 adios (NULL, "bad argument %s %s", argp[-2], cp);
301 if (!(cp = *argp++) || *cp == '-')
302 adios (NULL, "missing argument to %s", argp[-2]);
305 if (!(cp = *argp++) || *cp == '-')
306 adios (NULL, "missing argument to %s", argp[-2]);
316 if (*cp == '+' || *cp == '@') {
318 adios (NULL, "only one folder at a time!");
320 folder = pluspath (cp);
324 adios (NULL, "only one file at a time!");
329 if (!file && !folder)
332 adios (NULL, "use a file or a folder, not both");
333 strncpy (myfilter, etcpath (mhlforward), sizeof(myfilter));
336 ioctl (pfd, FIOCLEX, NULL);
342 istat = SIGNAL2 (SIGINT, intrser);
343 qstat = SIGNAL2 (SIGQUIT, quitser);
345 sc_width (); /* MAGIC... */
347 if ((vmh = vmh1 && vmh2)) {
350 SIGNAL (SIGINT, SIG_IGN);
351 SIGNAL (SIGQUIT, SIG_IGN);
353 tstat = SIGNAL (SIGTSTP, SIG_IGN);
362 display_info (id > 0 ? scansw : 0);
364 msh (id > 0 ? scansw : 0);
373 static struct swit mshcmds[] = {
438 register char *cp, **ap;
439 char prompt[BUFSIZ], *vec[MAXARGS];
441 register struct Cmd *cmdp;
442 static int once_only = ADVCMD;
444 snprintf (prompt, sizeof(prompt), myprompt, invo_name);
453 if ((i = getcmds (mshcmds, cmdp, scansw)) == EOF) {
458 check_folder (scansw);
459 if ((i = getargs (prompt, mshcmds, cmdp)) == EOF) {
464 cmd_name = mshcmds[i].sw;
472 if (once_only == ADVCMD)
473 once_only = i = SHOWCMD;
475 i = mp->curmsg != mp->hghmsg ? NEXTCMD : EXITCMD;
476 cmd_name = mshcmds[i].sw;
482 case FORWCMD: /* sigh */
492 if ((cp = context_find (cmd_name))) {
494 ap = brkstring (cp, " ", "\n");
495 ap = copyip (ap, vec, MAXARGS);
506 copyip (cmdp->args + 1, ap, MAXARGS);
510 if (!vmh && init_io (cmdp, vmh) == NOTOK) {
516 redirected = vmh || cmdp->direction != STDIO;
527 if (!vmh || ttyN (cmdp) != NOTOK)
528 forkcmd (vec, cmd_name);
532 if (!vmh || ttyN (cmdp) != NOTOK)
537 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
543 || (filehak (vec) == OK ? ttyN (cmdp)
544 : winN (cmdp, DISPLAY, 1)) != NOTOK)
549 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
554 if (!vmh || ttyN (cmdp) != NOTOK)
559 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
565 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
570 if (!vmh || ttyN (cmdp) != NOTOK)
577 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
583 || (packhak (vec) == OK ? ttyN (cmdp)
584 : winN (cmdp, DISPLAY, 1)) != NOTOK)
589 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
594 if (!vmh || ttyN (cmdp) != NOTOK)
599 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
604 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
609 if (!vmh || winN (cmdp, DISPLAY, 1) != NOTOK)
614 padios (NULL, "no dispatch for %s", cmd_name);
636 fsetup (char *folder)
642 maildir = m_maildir (folder);
643 if (chdir (maildir) == NOTOK)
644 padios (maildir, "unable to change directory to");
646 /* read folder and create message structure */
647 if (!(mp = folder_read (folder)))
648 padios (NULL, "unable to read folder %s", folder);
650 /* check for empty folder */
652 padios (NULL, "no messages in %s", folder);
655 mtime = stat (mp->foldpath, &st) != NOTOK ? st.st_mtime : 0;
657 m_gMsgs (mp->hghmsg);
659 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
660 Msgs[msgnum].m_bboard_id = 0;
661 Msgs[msgnum].m_top = NOTOK;
662 Msgs[msgnum].m_start = Msgs[msgnum].m_stop = 0L;
663 Msgs[msgnum].m_scanl = NULL;
668 fmsh = getcpy (folder);
670 maxfds = OPEN_MAX / 2;
672 if ((maxfds -= 2) < 1)
682 if ((fp = fopen (file, "r")) == NULL)
683 padios (file, "unable to read");
685 ioctl (fileno (fp), FIOCLEX, NULL);
687 if (fstat (fileno (fp), &st) != NOTOK) {
688 mode = (int) (st.st_mode & 0777), mtime = st.st_mtime;
689 msgp = read_map (file, (long) st.st_size);
692 mode = m_gmprot (), mtime = 0;
696 if ((msgp = read_file (msgp ? Msgs[msgp].m_stop : 0L, msgp + 1)) < 1)
697 padios (NULL, "no messages in %s", myname ? myname : file);
699 if (!(mp = (struct msgs *) calloc ((size_t) 1, sizeof(*mp))))
700 padios (NULL, "unable to allocate folder storage");
702 if (!(mp->msgstats = calloc ((size_t) msgp + 3, sizeof(*(mp->msgstats)))))
703 padios (NULL, "unable to allocate message status storage");
709 mp->foldpath = getcpy (myname ? myname : file);
710 clear_folder_flags (mp);
713 if (st.st_uid != getuid () || access (file, W_OK) == NOTOK)
717 mp->hghoff = mp->hghmsg + 1;
719 for (i = mp->lowmsg; i <= mp->hghmsg; i++) {
720 clear_msg_flags (mp, i);
725 mp->msgattrs[0] = getcpy ("unseen");
726 mp->msgattrs[1] = NULL;
728 m_unknown (fp); /* the MAGIC invocation */
737 read_map (char *file, long size)
739 register int i, msgp;
740 register struct drop *dp, *mp;
743 if ((i = map_read (file, size, &rp, 1)) == 0)
749 for (dp = rp + 1; i-- > 0; msgp++, dp++) {
750 mp = &Msgs[msgp].m_drop;
752 mp->d_size = dp->d_size;
753 mp->d_start = dp->d_start;
754 mp->d_stop = dp->d_stop;
755 Msgs[msgp].m_scanl = NULL;
764 read_file (long pos, int msgp)
767 register struct drop *dp, *mp;
770 if ((i = mbx_read (fp, pos, &rp, 1)) <= 0)
773 m_gMsgs ((msgp - 1) + i);
775 for (dp = rp; i-- > 0; msgp++, dp++) {
776 mp = &Msgs[msgp].m_drop;
778 mp->d_size = dp->d_size;
779 mp->d_start = dp->d_start;
780 mp->d_stop = dp->d_stop;
781 Msgs[msgp].m_scanl = NULL;
795 nMsgs = n + MAXFOLDER / 2;
796 Msgs = (struct Msg *) calloc ((size_t) (nMsgs + 2), sizeof *Msgs);
798 padios (NULL, "unable to allocate Msgs structure");
805 nmsgs = nMsgs + n + MAXFOLDER / 2;
806 Msgs = (struct Msg *) mh_xrealloc ((char *) Msgs, (size_t) (nmsgs + 2) * sizeof *Msgs);
807 memset((char *) (Msgs + nMsgs + 2), 0, (size_t) ((nmsgs - nMsgs) * sizeof *Msgs));
814 msh_ready (int msgnum, int full)
826 if ((fd = Msgs[msgnum].m_top) == NOTOK) {
827 if (numfds >= maxfds)
828 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++)
829 if (Msgs[msgp].m_top != NOTOK) {
830 close (Msgs[msgp].m_top);
831 Msgs[msgp].m_top = NOTOK;
836 if ((fd = open (cp = m_name (msgnum), O_RDONLY)) == NOTOK)
837 padios (cp, "unable to open message");
838 Msgs[msgnum].m_top = fd;
842 if ((fd = dup (fd)) == NOTOK)
843 padios ("cached message", "unable to dup");
844 if ((yp = fdopen (fd, "r")) == NULL)
845 padios (NULL, "unable to fdopen cached message");
846 fseek (yp, 0L, SEEK_SET);
850 m_eomsbr ((int (*)()) 0); /* XXX */
851 fseek (fp, Msgs[msgnum].m_start, SEEK_SET);
857 check_folder (int scansw)
859 int seqnum, i, low, hgh, msgp;
863 if (stat (mp->foldpath, &st) == NOTOK)
864 padios (mp->foldpath, "unable to stat");
865 if (mtime == st.st_mtime)
869 low = mp->hghmsg + 1;
870 folder_free (mp); /* free folder/message structure */
872 if (!(mp = folder_read (fmsh)))
873 padios (NULL, "unable to re-read folder %s", fmsh);
877 for (msgp = mp->lowmsg; msgp <= mp->hghmsg; msgp++) {
878 if (Msgs[msgp].m_top != NOTOK) {
879 close (Msgs[msgp].m_top);
880 Msgs[msgp].m_top = NOTOK;
883 if (Msgs[msgp].m_scanl) {
884 free (Msgs[msgp].m_scanl);
885 Msgs[msgp].m_scanl = NULL;
891 if (modified || low > hgh)
895 if (fstat (fileno (fp), &st) == NOTOK)
896 padios (mp->foldpath, "unable to fstat");
897 if (mtime == st.st_mtime)
899 mode = (int) (st.st_mode & 0777);
902 if ((msgp = read_file (Msgs[mp->hghmsg].m_stop, mp->hghmsg + 1)) < 1)
903 padios (NULL, "no messages in %s", mp->foldpath); /* XXX */
904 if (msgp >= MAXFOLDER)
905 padios (NULL, "more than %d messages in %s", MAXFOLDER,
907 if (msgp <= mp->hghmsg)
910 if (!(mp = folder_realloc (mp, mp->lowoff, msgp)))
911 padios (NULL, "unable to allocate folder storage");
913 low = mp->hghmsg + 1, hgh = msgp;
914 seqnum = scansw ? seq_getnum (mp, "unseen") : -1;
915 for (i = mp->hghmsg + 1; i <= msgp; i++) {
918 add_sequence(mp, seqnum, i);
928 advise (NULL, "new messages have arrived!\007");
930 scanrange (low, hgh);
937 scanrange (int low, int hgh)
941 snprintf (buffer, sizeof(buffer), "%d-%d", low, hgh);
947 scanstring (char *arg)
949 char *cp, **ap, *vec[MAXARGS];
952 * This should be replace with a call to getarguments()
954 if ((cp = context_find (cmd_name = "scan"))) {
956 ap = brkstring (cp, " ", "\n");
957 ap = copyip (ap, vec, MAXARGS);
973 register int cur, seqnum, i=0, msgnum;
976 seq_setcur (mp, mp->lowmsg);
977 if (id <= 0 || (seqnum = seq_getnum (mp, "unseen")) == -1)
980 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
981 add_sequence(mp, seqnum, msgnum);
986 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
987 if (does_exist(mp, msgnum)) /* FIX */
988 if ((i = readid (msgnum)) > 0 && i < id) {
990 clear_sequence(mp, seqnum, msgnum);
993 for (i = mp->lowmsg; i < msgnum; i++)
994 clear_sequence(mp, seqnum, i);
996 if (cur > mp->hghmsg)
999 seq_setcur (mp, cur);
1002 if ((gap = 1 < id && id < (i = readid (mp->lowmsg)) ? id : 0) && !vmh)
1003 advise (NULL, "gap in ID:s, last seen %d, lowest present %d\n",
1012 char *bp, buf[BUFSIZ], name[NAMESZ];
1015 if (Msgs[msgnum].m_bboard_id)
1016 return Msgs[msgnum].m_bboard_id;
1018 zp = msh_ready (msgnum, 0);
1020 switch (state = m_getfld (state, name, buf, sizeof(buf), zp)) {
1024 if (!mh_strcasecmp (name, BBoard_ID)) {
1026 while (state == FLDPLUS) {
1027 state = m_getfld (state, name, buf, sizeof(buf), zp);
1033 return (Msgs[msgnum].m_bboard_id = i);
1037 while (state == FLDPLUS)
1038 state = m_getfld (state, name, buf, sizeof(buf), zp);
1039 if (state != FLDEOF)
1049 display_info (int scansw)
1053 interactive = isatty (fileno (stdout));
1055 if ((sd = dup (fileno (stdout))) == NOTOK)
1056 padios ("standard output", "unable to dup");
1057 #ifndef BSD42 /* XXX */
1059 ioctl (sd, FIOCLEX, NULL);
1060 #endif /* FIOCLEX */
1061 #endif /* not BSD42 */
1062 if ((sp = fdopen (sd, "w")) == NULL)
1063 padios ("standard output", "unable to fdopen");
1066 m_putenv ("mhfolder", mp->foldpath);
1071 printf ("Reading ");
1072 if (SOprintf ("%s", myname))
1073 printf ("%s", myname);
1074 printf (", currently at message %d of %d\n",
1075 mp->curmsg, mp->hghmsg);
1078 printf ("Reading ");
1080 printf ("+%s", fmsh);
1082 printf ("%s", mp->foldpath);
1083 printf (", currently at message %d of %d\n",
1084 mp->curmsg, mp->hghmsg);
1087 if (((seqnum = seq_getnum (mp, "unseen")) != -1)
1089 && in_sequence(mp, seqnum, mp->hghmsg))
1090 scanstring ("unseen");
1097 int i = 0, seqnum, msgnum;
1103 if ((seqnum = seq_getnum (mp, "unseen")) != -1)
1104 for (msgnum = mp->hghmsg; msgnum >= mp->lowmsg; msgnum--)
1105 if (!in_sequence(mp, seqnum, msgnum)) {
1106 if (Msgs[msgnum].m_bboard_id == 0)
1108 if ((i = Msgs[msgnum].m_bboard_id) > 0)
1112 snprintf (buffer, sizeof(buffer), "%d %d\n", i, Msgs[mp->hghmsg].m_bboard_id);
1113 write (pfd, buffer, sizeof(buffer));
1123 char *cp, tmpfil[BUFSIZ];
1124 char map1[BUFSIZ], map2[BUFSIZ];
1128 if (!(mp->msgflags & MODIFIED) || is_readonly(mp) || fmsh) {
1130 rc2peer (RC_FIN, 0, NULL);
1135 ttyNaux (NULLCMD, "FAST");
1137 if ((dp = lkfopen (mp->foldpath, "r")) == NULL) {
1138 advise (mp->foldpath, "unable to lock");
1145 if (fstat (fileno (dp), &st) == NOTOK) {
1146 advise (mp->foldpath, "unable to stat");
1149 if (mtime != st.st_mtime) {
1150 advise (NULL, "new messages have arrived, no update");
1153 mode = (int) (st.st_mode & 0777);
1155 if (mp->nummsg == 0) {
1156 cp = concat ("Zero file \"", mp->foldpath, "\"? ", NULL);
1157 if (getanswer (cp)) {
1158 if ((i = creat (mp->foldpath, mode)) != NOTOK)
1161 advise (mp->foldpath, "error zero'ing");
1162 unlink (map_name (mp->foldpath));/* XXX */
1167 cp = concat ("Update file \"", mp->foldpath, "\"? ", NULL);
1168 if (!getanswer (cp))
1170 strncpy (tmpfil, m_backup (mp->foldpath), sizeof(tmpfil));
1171 if ((md = mbx_open (tmpfil, mbx_style, st.st_uid, st.st_gid, mode)) == NOTOK) {
1172 advise (tmpfil, "unable to open");
1176 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1177 if (does_exist(mp, msgnum) && pack (tmpfil, md, msgnum) == NOTOK) {
1178 mbx_close (tmpfil, md);
1180 unlink (map_name (tmpfil));
1183 mbx_close (tmpfil, md);
1185 if (rename (tmpfil, mp->foldpath) == NOTOK)
1186 admonish (mp->foldpath, "unable to rename %s to", tmpfil);
1188 strncpy (map1, map_name (tmpfil), sizeof(map1));
1189 strncpy (map2, map_name (mp->foldpath), sizeof(map2));
1191 if (rename (map1, map2) == NOTOK) {
1192 admonish (map2, "unable to rename %s to", map1);
1201 lkfclose (dp, mp->foldpath);
1210 getargs (char *prompt, struct swit *sw, struct Cmd *cmdp)
1214 static char buffer[BUFSIZ];
1220 switch (setjmp (sigenv)) {
1227 if (interrupted && !told_to_quit) {
1233 kill (ppid, SIGEMT);
1235 kill (ppid, SIGTERM);
1241 printf ("%s", prompt);
1244 for (cp = buffer; (i = getchar ()) != '\n';) {
1246 if (interrupted && !told_to_quit) {
1251 if (told_to_quit || i == EOF) {
1254 kill (ppid, SIGEMT);
1256 kill (ppid, SIGTERM);
1262 longjmp (sigenv, DONE);
1264 if (cp < &buffer[sizeof buffer - 2])
1271 if (buffer[0] == '?') {
1272 printf ("commands:\n");
1273 print_sw (ALL, sw, "", stdout);
1274 printf ("type CTRL-D or use ``quit'' to leave %s\n",
1279 if (parse (buffer, cmdp) == NOTOK)
1282 switch (i = smatch (cmdp->args[0], sw)) {
1284 ambigsw (cmdp->args[0], sw);
1287 printf ("say what: ``%s'' -- type ? (or help) for help\n",
1301 getcmds (struct swit *sw, struct Cmd *cmdp, int scansw)
1304 struct record rcs, *rc;
1310 switch (peer2rc (rc)) {
1312 pQRY (rc->rc_data, scansw);
1316 if ((i = pCMD (rc->rc_data, sw, cmdp)) != NOTOK)
1323 kill (ppid, SIGEMT);
1325 kill (ppid, SIGTERM);
1330 padios (NULL, "%s", rc->rc_data);
1333 fmt2peer (RC_ERR, "pLOOP protocol screw-up");
1340 parse (char *buffer, struct Cmd *cmdp)
1343 unsigned char c, *cp;
1347 pp = cmdp->args[argp++] = cmdp->line;
1348 cmdp->redirect = NULL;
1349 cmdp->direction = STDIO;
1350 cmdp->stream = NULL;
1352 for (cp = buffer; (c = *cp); cp++) {
1358 fmt2peer (RC_EOF, "null command");
1362 while ((c = *cp++)) {
1369 cmdp->args[argp++] = pp;
1376 switch (c = *cp++) {
1378 padvise (NULL, "unmatched \"");
1383 if ((c = *cp++) == 0)
1394 if ((c = *cp++) == 0) {
1396 padvise (NULL, "the newline character can not be quoted");
1406 if (pp == cmdp->line) {
1407 padvise (NULL, "invalid null command");
1410 if (*cmdp->args[argp - 1] == 0)
1412 cmdp->direction = c == '>' ? CRTIO : PIPIO;
1413 if (cmdp->direction == CRTIO && (c = *cp) == '>') {
1414 cmdp->direction = APPIO;
1417 cmdp->redirect = pp + 1;/* sigh */
1418 for (; (c = *cp); cp++)
1422 padvise (NULL, cmdp->direction != PIPIO
1423 ? "missing name for redirect"
1424 : "invalid null command");
1427 strcpy (cmdp->redirect, cp);
1428 if (cmdp->direction != PIPIO) {
1430 if (isspace (*cp)) {
1431 padvise (NULL, "bad name for redirect");
1434 if (expand (cmdp->redirect) == NOTOK)
1443 cmdp->args[argp] = NULL;
1450 expand (char *redirect)
1456 if (*redirect != '~')
1459 if ((cp = strchr(pp = redirect + 1, '/')))
1464 if ((pw = getpwnam (pp)))
1467 padvise (NULL, "unknown user: %s", pp);
1471 snprintf (path, sizeof(path), "%s/%s", pp, cp ? cp : "");
1472 strcpy (redirect, path);
1478 init_io (struct Cmd *cmdp, int vio)
1485 result = initaux_io (cmdp);
1493 initaux_io (struct Cmd *cmdp)
1497 switch (cmdp->direction) {
1503 mode = cmdp->direction == CRTIO ? "write" : "append";
1504 if ((cmdp->stream = fopen (cmdp->redirect, mode)) == NULL) {
1505 padvise (cmdp->redirect, "unable to %s ", mode);
1506 cmdp->direction = STDIO;
1512 if ((cmdp->stream = popen (cmdp->redirect, "w")) == NULL) {
1513 padvise (cmdp->redirect, "unable to pipe");
1514 cmdp->direction = STDIO;
1517 SIGNAL (SIGPIPE, pipeser);
1522 padios (NULL, "unknown redirection for command");
1526 if (dup2 (fileno (cmdp->stream), fileno (stdout)) == NOTOK)
1527 padios ("standard output", "unable to dup2");
1535 fin_io (struct Cmd *cmdp, int vio)
1547 finaux_io (struct Cmd *cmdp)
1549 switch (cmdp->direction) {
1556 close (fileno (stdout));
1557 if (ferror (stdout))
1558 padvise (NULL, "problems writing %s", cmdp->redirect);
1559 fclose (cmdp->stream);
1564 close (fileno (stdout));
1565 pclose (cmdp->stream);
1566 SIGNAL (SIGPIPE, SIG_DFL);
1570 padios (NULL, "unknown redirection for command");
1573 if (dup2 (fileno (sp), fileno (stdout)) == NOTOK)
1574 padios ("standard output", "unable to dup2");
1577 cmdp->direction = STDIO;
1586 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
1587 unset_selected (mp, msgnum);
1588 mp->lowsel = mp->hghsel = mp->numsel = 0;
1596 folder_free (mp); /* free folder/message structure */
1602 seq_setcur (struct msgs *mp, int msgnum)
1604 if (mp->curmsg == msgnum)
1607 if (mp->curmsg && Msgs[mp->curmsg].m_scanl) {
1608 free (Msgs[mp->curmsg].m_scanl);
1609 Msgs[mp->curmsg].m_scanl = NULL;
1611 if (Msgs[msgnum].m_scanl) {
1612 free (Msgs[msgnum].m_scanl);
1613 Msgs[msgnum].m_scanl = NULL;
1616 mp->curmsg = msgnum;
1629 longjmp (sigenv, NOTOK);
1637 if (broken_pipe++ == 0)
1638 fprintf (stderr, "broken pipe\n");
1644 longjmp (sigenv, NOTOK);
1657 longjmp (sigenv, NOTOK);
1665 longjmp (peerenv, DONE);
1674 struct record rcs, *rc;
1679 switch (peer2rc (rc)) {
1682 while (isspace (*bp))
1684 if (sscanf (bp, "%d", &vrsn) != 1) {
1686 fmt2peer (RC_ERR, "bad init \"%s\"", rc->rc_data);
1689 if (vrsn != RC_VRSN) {
1690 fmt2peer (RC_ERR, "version %d unsupported", vrsn);
1694 while (*bp && !isspace (*bp))
1696 while (isspace (*bp))
1698 if (sscanf (bp, "%d", &numwins) != 1 || numwins <= 0)
1703 for (i = 1; i <= numwins; i++) {
1704 while (*bp && !isspace (*bp))
1706 while (isspace (*bp))
1708 if (sscanf (bp, "%d", &windows[i]) != 1 || windows[i] <= 0)
1711 rc2peer (RC_ACK, 0, NULL);
1715 padios (NULL, "%s", rc->rc_data);
1718 fmt2peer (RC_ERR, "pINI protocol screw-up");
1719 done (1); /* NOTREACHED */
1722 return 1; /* dead code to satisfy the compiler */
1727 pQRY (char *str, int scansw)
1729 if (pQRY1 (scansw) == NOTOK || pQRY2 () == NOTOK)
1732 rc2peer (RC_EOF, 0, NULL);
1741 static int lastlow = 0,
1746 oldhgh = mp->hghmsg;
1747 if (check_folder (scansw) && oldhgh < mp->hghmsg) {
1748 switch (winX (STATUS)) {
1753 printf ("new messages have arrived!");
1756 _exit (0); /* NOTREACHED */
1759 lastlow = lastcur = lasthgh = lastnum = 0;
1763 switch (winX (DISPLAY)) {
1768 scanrange (oldhgh + 1, mp->hghmsg);
1771 _exit (0); /* NOTREACHED */
1780 switch (winX (STATUS)) {
1785 printf ("%s: gap in ID:s, last seen %d, lowest present %d\n",
1786 myname ? myname : fmsh ? fmsh : mp->foldpath, gap - 1,
1787 readid (mp->lowmsg));
1790 _exit (0); /* NOTREACHED */
1797 if (mp->lowmsg != lastlow
1798 || mp->curmsg != lastcur
1799 || mp->hghmsg != lasthgh
1800 || mp->nummsg != lastnum)
1801 switch (winX (STATUS)) {
1809 _exit (0); /* NOTREACHED */
1812 lastlow = mp->lowmsg;
1813 lastcur = mp->curmsg;
1814 lasthgh = mp->hghmsg;
1815 lastnum = mp->nummsg;
1826 int i, j, k, msgnum, n;
1832 if (mp->nummsg == 0 && mp->nummsg != num)
1833 switch (winX (SCAN)) {
1841 _exit (0); /* NOTREACHED */
1850 j = (k = windows[SCAN]) / 2;
1851 for (msgnum = mp->curmsg; msgnum <= mp->hghmsg; msgnum++)
1852 if (does_exist (mp, msgnum))
1856 k = i >= k ? 1 : k - i;
1863 for (msgnum = mp->curmsg; msgnum >= mp->lowmsg; msgnum--)
1864 if (does_exist (mp, msgnum)) {
1871 for (msgnum = mp->curmsg + 1; msgnum <= mp->hghmsg; msgnum++)
1872 if (does_exist (mp, msgnum)) {
1876 if (n++ >= windows[SCAN])
1882 && does_exist (mp, lo)
1883 && does_exist (mp, hi)
1885 || (lo == mp->curmsg && lo == mp->lowmsg))
1887 || (hi == mp->curmsg && hi == mp->hghmsg))
1888 && hi - lo == j - i)
1891 if (mp->curmsg != cur || modified)
1892 switch (winN (NULLCMD, SCAN, 0)) {
1900 scanrange (lo = i, hi = j);
1911 pCMD (char *str, struct swit *sw, struct Cmd *cmdp)
1916 switch (winX (DISPLAY)) {
1921 printf ("commands:\n");
1922 print_sw (ALL, sw, "", stdout);
1923 printf ("type ``quit'' to leave %s\n", invo_name);
1926 _exit (0); /* NOTREACHED */
1929 rc2peer (RC_EOF, 0, NULL);
1933 if (parse (str, cmdp) == NOTOK)
1936 switch (i = smatch (cmdp->args[0], sw)) {
1938 switch (winX (DISPLAY)) {
1943 ambigsw (cmdp->args[0], sw);
1946 _exit (0); /* NOTREACHED */
1949 rc2peer (RC_EOF, 0, NULL);
1955 "say what: ``%s'' -- type ? (or help) for help",
1970 switch (setjmp (peerenv)) {
1972 SIGNAL (SIGALRM, alrmser);
1975 status = peerwait ();
1989 struct record rcs, *rc;
1994 switch (peer2rc (rc)) {
1997 rc2peer (RC_FIN, 0, NULL);
2001 advise (NULL, "%s", rc->rc_data);
2005 fmt2peer (RC_FIN, "pLOOP protocol screw-up");
2012 ttyNaux (struct Cmd *cmdp, char *s)
2014 struct record rcs, *rc;
2019 if (cmdp && init_io (cmdp, vmh) == NOTOK)
2022 /* XXX: fseek() too tricky for our own good */
2024 fseek (fp, 0L, SEEK_SET);
2027 switch (rc2rc (RC_TTY, s ? strlen (s) : 0, s, rc)) {
2029 vmhtty = OK; /* fall */
2034 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
2037 fmt2peer (RC_ERR, "pTTY protocol screw-up");
2038 done (1); /* NOTREACHED */
2042 SIGNAL (SIGTSTP, tstat);
2049 ttyR (struct Cmd *cmdp)
2051 struct record rcs, *rc;
2056 SIGNAL (SIGTSTP, SIG_IGN);
2068 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2070 rc2peer (RC_EOF, 0, NULL);
2074 padios (NULL, "%s", rc->rc_data);/* NOTREACHED */
2077 fmt2peer (RC_ERR, "pTTY protocol screw-up");
2078 done (1); /* NOTREACHED */
2081 return 1; /* dead code to satisfy compiler */
2086 winN (struct Cmd *cmdp, int n, int eof)
2089 char buffer[BUFSIZ];
2090 struct record rcs, *rc;
2093 if (vmhpid == NOTOK)
2098 /* XXX: fseek() too tricky for our own good */
2100 fseek (fp, 0L, SEEK_SET);
2104 snprintf (buffer, sizeof(buffer), "%d", n);
2105 switch (str2rc (RC_WIN, buffer, rc)) {
2113 padios (NULL, "%s", rc->rc_data);
2116 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2120 if (pipe (pd) == NOTOK) {
2121 err2peer (RC_ERR, "pipe", "unable to");
2125 switch (vmhpid = fork()) {
2127 err2peer (RC_ERR, "fork", "unable to");
2134 SIGNAL (SIGPIPE, SIG_IGN);
2135 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2136 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2144 advise (NULL, "%s", rc->rc_data);
2148 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2152 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2155 rc2peer (RC_EOF, 0, NULL);
2160 advise (NULL, "%s", rc->rc_data);
2165 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2170 err2peer (RC_ERR, "pipe", "error reading from");
2172 _exit (i != NOTOK ? i : 1);
2175 if ((vmhfd0 = dup (fileno (stdin))) == NOTOK)
2176 padios ("standard input", "unable to dup");
2177 if ((vmhfd1 = dup (fileno (stdout))) == NOTOK)
2178 padios ("standard output", "unable to dup");
2179 if ((vmhfd2 = dup (fileno (stderr))) == NOTOK)
2180 padios ("diagnostic output", "unable to dup");
2183 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2184 dup2 (i, fileno (stdin));
2189 if (dup2 (pd[1], fileno (stdout)) == NOTOK)
2190 padios ("standard output", "unable to dup2");
2194 if (dup2 (pd[1], fileno (stderr)) == NOTOK)
2195 padios ("diagnostic output", "unable to dup2");
2198 if (cmdp && init_io (cmdp, 0) == NOTOK)
2200 pstat = SIGNAL (SIGPIPE, pipeser);
2212 winR (struct Cmd *cmdp)
2222 if (dup2 (vmhfd0, fileno (stdin)) == NOTOK)
2223 padios ("standard input", "unable to dup2");
2228 if (dup2 (vmhfd1, fileno (stdout)) == NOTOK)
2229 padios ("standard output", "unable to dup2");
2234 if (dup2 (vmhfd2, fileno (stderr)) == NOTOK)
2235 padios ("diagnostic output", "unable to dup2");
2239 SIGNAL (SIGPIPE, pstat);
2241 if ((status = pidwait (vmhpid, OK)) == 2)
2245 return (status == 0 ? OK : NOTOK);
2253 char buffer[BUFSIZ];
2254 struct record rcs, *rc;
2259 /* XXX: fseek() too tricky for our own good */
2261 fseek (fp, 0L, SEEK_SET);
2263 snprintf (buffer, sizeof(buffer), "%d", n);
2264 switch (str2rc (RC_WIN, buffer, rc)) {
2272 padios (NULL, "%s", rc->rc_data);
2275 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2279 if (pipe (pd) == NOTOK) {
2280 err2peer (RC_ERR, "pipe", "unable to");
2284 switch (pid = fork ()) {
2286 err2peer (RC_ERR, "fork", "unable to");
2292 close (fileno (stdin));
2293 if ((i = open ("/dev/null", O_RDONLY)) != NOTOK && i != fileno (stdin)) {
2294 dup2 (i, fileno (stdin));
2297 dup2 (pd[1], fileno (stdout));
2298 dup2 (pd[1], fileno (stderr));
2306 while ((i = read (pd[0], buffer, sizeof buffer)) > 0)
2307 switch (rc2rc (RC_DATA, i, buffer, rc)) {
2317 padios (NULL, "%s", rc->rc_data);
2320 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2324 switch (rc2rc (RC_EOF, 0, NULL, rc)) {
2329 padios (NULL, "%s", rc->rc_data);
2332 fmt2peer (RC_ERR, "pWIN protocol screw-up");
2336 err2peer (RC_ERR, "pipe", "error reading from");
2340 return (i != NOTOK ? pid : NOTOK);
2346 padios (char *what, char *fmt, ...)
2352 verr2peer (RC_FIN, what, fmt, ap);
2355 advertise (what, NULL, fmt, ap);
2364 padvise (char *what, char *fmt, ...)
2370 verr2peer (RC_ERR, what, fmt, ap);
2372 advertise (what, NULL, fmt, ap);