1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
2 *@ (Lexical processing of) Commands, and the (blocking) "event mainloop".
4 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
5 * Copyright (c) 2012 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
8 * Copyright (c) 1980, 1993
9 * The Regents of the University of California. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #ifndef HAVE_AMALGAMATION
43 char const *name
; /* Name of command */
44 int (*func
)(void*); /* Implementor of command */
45 enum argtype argtype
; /* Arglist type (see below) */
46 short msgflag
; /* Required flags of msgs */
47 short msgmask
; /* Relevant flags of msgs */
48 #ifdef HAVE_DOCSTRINGS
49 char const *doc
; /* One line doc for command */
52 /* Yechh, can't initialize unions */
53 #define minargs msgflag /* Minimum argcount for RAWLIST */
54 #define maxargs msgmask /* Max argcount for RAWLIST */
57 struct cmd_ghost
*next
;
58 struct str cmd
; /* Data follows after .name */
59 char name
[VFIELD_SIZE(0)];
63 static int _reset_on_stop
; /* do a reset() if stopped */
64 static sighandler_type _oldpipe
;
65 static struct cmd_ghost
*_cmd_ghosts
;
66 /* _cmd_tab[] after fun protos */
67 static int _lex_inithdr
; /* am printing startup headers */
69 /* Update mailname (if name != NULL) and displayname, return wether displayname
70 * was large enough to swallow mailname */
71 static bool_t
_update_mailname(char const *name
);
72 #ifdef HAVE_C90AMEND1 /* TODO unite __narrow_suffix() into one fun! */
73 SINLINE
size_t __narrow_suffix(char const *cp
, size_t cpl
, size_t maxl
);
76 /* Isolate the command from the arguments */
77 static char * _lex_isolate(char const *comm
);
79 /* Get first-fit, or NULL */
80 static struct cmd
const * _lex(char const *comm
);
82 /* Command ghost handling */
83 static int _c_ghost(void *v
);
84 static int _c_unghost(void *v
);
86 /* Print a list of all commands */
87 static int _c_pcmdlist(void *v
);
89 static int __pcmd_cmp(void const *s1
, void const *s2
);
92 static int _c_quit(void *v
);
94 /* Print the binaries compiled-in features */
95 static int _c_features(void *v
);
97 /* Print the binaries version number */
98 static int _c_version(void *v
);
100 /* When we wake up after ^Z, reprint the prompt */
101 static void stop(int s
);
103 /* Branch here on hangup signal and simulate "exit" */
104 static void hangup(int s
);
106 /* List of all commands */
107 static struct cmd
const _cmd_tab
[] = {
111 #ifdef HAVE_C90AMEND1
113 __narrow_suffix(char const *cp
, size_t cpl
, size_t maxl
)
119 for (err
= ok
= i
= 0; cpl
> maxl
|| err
;) {
120 int ml
= mblen(cp
, cpl
);
121 if (ml
< 0) { /* XXX _narrow_suffix(): mblen() error; action? */
122 (void)mblen(NULL
, 0);
139 #endif /* HAVE_C90AMEND1 */
142 _update_mailname(char const *name
)
144 char tbuf
[PATH_MAX
], *mailp
, *dispp
;
149 /* Don't realpath(3) if it's only an update request */
152 enum protocol p
= which_protocol(name
);
153 if (p
== PROTO_FILE
|| p
== PROTO_MAILDIR
) {
154 if (realpath(name
, mailname
) == NULL
) {
155 n_err(_("Can't canonicalize \"%s\"\n"), name
);
162 n_strlcpy(mailname
, name
, sizeof(mailname
));
168 /* Don't display an absolute path but "+FOLDER" if under *folder* */
169 if (getfold(tbuf
, sizeof tbuf
)) {
171 if (i
< sizeof(tbuf
) -1)
173 if (!strncmp(tbuf
, mailp
, i
)) {
179 /* We want to see the name of the folder .. on the screen */
181 if (i
< sizeof(displayname
) -1)
182 memcpy(dispp
, mailp
, i
+1);
185 /* Avoid disrupting multibyte sequences (if possible) */
186 #ifndef HAVE_C90AMEND1
187 j
= sizeof(displayname
) / 3 - 1;
188 i
-= sizeof(displayname
) - (1/* + */ + 3) - j
;
190 j
= field_detect_clip(sizeof(displayname
) / 3, mailp
, i
);
191 i
= j
+ __narrow_suffix(mailp
+ j
, i
- j
,
192 sizeof(displayname
) - (1/* + */ + 3 + 1) - j
);
194 snprintf(dispp
, sizeof(displayname
), "%.*s...%s",
195 (int)j
, mailp
, mailp
+ i
);
202 _lex_isolate(char const *comm
)
205 while (*comm
!= '\0' &&
206 strchr("~|? \t0123456789&%@$^.:/-+*'\",;(`", *comm
) == NULL
)
209 return UNCONST(comm
);
212 static struct cmd
const *
213 _lex(char const *comm
) /* TODO **command hashtable**! linear list search!!! */
215 struct cmd
const *cp
;
218 for (cp
= _cmd_tab
; cp
->name
!= NULL
; ++cp
)
219 if (*comm
== *cp
->name
&& is_prefix(comm
, cp
->name
))
230 char const **argv
= v
;
231 struct cmd_ghost
*lcg
, *cg
;
240 if ((fp
= Ftmp(NULL
, "ghost", OF_RDWR
| OF_UNLINK
| OF_REGISTER
, 0600)) ==
243 for (i
= 0, cg
= _cmd_ghosts
; cg
!= NULL
; cg
= cg
->next
)
244 fprintf(fp
, "ghost %s \"%s\"\n", cg
->name
, string_quote(cg
->cmd
.s
));
246 page_or_print(fp
, i
);
252 /* Verify the ghost name is a valid one */
253 if (*argv
[0] == '\0' || *_lex_isolate(argv
[0]) != '\0') {
254 n_err(_("`ghost': can't canonicalize \"%s\"\n"), argv
[0]);
259 /* Show command of single ghost? */
260 if (argv
[1] == NULL
) {
261 for (cg
= _cmd_ghosts
; cg
!= NULL
; cg
= cg
->next
)
262 if (!strcmp(argv
[0], cg
->name
)) {
263 printf("ghost %s \"%s\"\n", cg
->name
, string_quote(cg
->cmd
.s
));
266 n_err(_("`ghost': no such alias: \"%s\"\n"), argv
[0]);
271 /* Define command for ghost: verify command content */
272 for (cl
= 0, i
= 1; (cp
= UNCONST(argv
[i
])) != NULL
; ++i
)
274 cl
+= strlen(cp
) + 1; /* SP or NUL */
276 n_err(_("`ghost': empty command arguments after \"%s\"\n"), argv
[0]);
281 /* If the ghost already exists, recreate */
282 for (lcg
= NULL
, cg
= _cmd_ghosts
; cg
!= NULL
; lcg
= cg
, cg
= cg
->next
)
283 if (!strcmp(cg
->name
, argv
[0])) {
285 lcg
->next
= cg
->next
;
287 _cmd_ghosts
= cg
->next
;
292 nl
= strlen(argv
[0]) +1;
293 cg
= smalloc(sizeof(*cg
) - VFIELD_SIZEOF(struct cmd_ghost
, name
) + nl
+ cl
);
294 cg
->next
= _cmd_ghosts
;
296 memcpy(cg
->name
, argv
[0], nl
);
297 cp
= cg
->cmd
.s
= cg
->name
+ nl
;
299 while (*++argv
!= NULL
) {
302 memcpy(cp
, *argv
, i
);
317 char const **argv
= v
, *cp
;
318 struct cmd_ghost
*lcg
, *cg
;
321 while ((cp
= *argv
++) != NULL
) {
322 if (cp
[0] == '*' && cp
[1] == '\0') {
323 while ((cg
= _cmd_ghosts
) != NULL
) {
324 _cmd_ghosts
= cg
->next
;
328 for (lcg
= NULL
, cg
= _cmd_ghosts
; cg
!= NULL
; lcg
= cg
, cg
= cg
->next
)
329 if (!strcmp(cg
->name
, cp
)) {
331 lcg
->next
= cg
->next
;
333 _cmd_ghosts
= cg
->next
;
337 n_err(_("`unghost': no such alias: \"%s\"\n"), cp
);
348 __pcmd_cmp(void const *s1
, void const *s2
)
350 struct cmd
const * const *c1
= s1
, * const *c2
= s2
;
354 rv
= strcmp((*c1
)->name
, (*c2
)->name
);
362 struct cmd
const **cpa
, *cp
, **cursor
;
367 for (i
= 0; _cmd_tab
[i
].name
!= NULL
; ++i
)
370 cpa
= ac_alloc(sizeof(cp
) * i
);
372 for (i
= 0; (cp
= _cmd_tab
+ i
)->name
!= NULL
; ++i
)
376 qsort(cpa
, i
, sizeof(cp
), &__pcmd_cmp
);
378 printf(_("Commands are:\n"));
379 for (i
= 0, cursor
= cpa
; (cp
= *cursor
++) != NULL
;) {
381 if (cp
->func
== &c_cmdnotsupp
)
383 j
= strlen(cp
->name
) + 2;
388 printf((*cursor
!= NULL
? "%s, " : "%s\n"), cp
->name
);
403 /* If we are PS_SOURCING, then return 1 so evaluate() can handle it.
404 * Otherwise return -1 to abort command loop */
405 rv
= (pstate
& PS_SOURCING
) ? 1 : -1;
415 printf(_("Features: %s\n"), ok_vlook(features
));
425 printf(_("Version %s\n"), ok_vlook(version
));
433 sighandler_type old_action
;
435 NYD_X
; /* Signal handler */
437 old_action
= safe_signal(s
, SIG_DFL
);
441 sigprocmask(SIG_UNBLOCK
, &nset
, NULL
);
443 sigprocmask(SIG_BLOCK
, &nset
, NULL
);
444 safe_signal(s
, old_action
);
445 if (_reset_on_stop
) {
454 NYD_X
; /* Signal handler */
461 setfile(char const *name
, enum fedit_mode fm
) /* TODO oh my god */
468 int rv
, omsgCount
= 0;
469 FILE *ibuf
= NULL
, *lckfp
= NULL
;
470 bool_t isdevnull
= FAL0
;
473 /* Note we don't 'userid(myname) != getuid()', preliminary steps are usually
474 * necessary to make a mailbox accessible by a different user, and if that
475 * has happened, let's just let the usual file perms decide */
477 if (name
[0] == '%' || ((who
= shortcut_expand(name
)) != NULL
&& *who
== '%'))
478 fm
|= FEDIT_SYSBOX
; /* TODO fexpand() needs to tell is-valid-user! */
480 who
= (name
[1] != '\0') ? name
+ 1 : myname
;
482 if ((name
= expand(name
)) == NULL
)
485 /* For at least substdate() users */
486 time_current_update(&time_current
, FAL0
);
488 switch (which_protocol(name
)) {
490 if (temporary_protocol_ext
!= NULL
)
491 name
= savecat(name
, temporary_protocol_ext
);
492 isdevnull
= ((options
& OPT_BATCH_FLAG
) && !strcmp(name
, "/dev/null"));
494 do { /* TODO we need objects, goes away then */
496 if (realpath(name
, ebuf
) != NULL
)
497 name
= savestr(ebuf
);
503 rv
= maildir_setfile(name
, fm
);
508 rv
= pop3_setfile(name
, fm
);
514 if ((fm
& FEDIT_NEWMAIL
) && mb
.mb_type
== MB_CACHE
)
517 rv
= imap_setfile(name
, fm
);
521 n_err(_("Cannot handle protocol: %s\n"), name
);
525 if ((ibuf
= Zopen(name
, "r")) == NULL
) {
526 if (((fm
& FEDIT_SYSBOX
) && errno
== ENOENT
) || (fm
& FEDIT_NEWMAIL
)) {
527 if (fm
& FEDIT_NEWMAIL
)
535 if (fstat(fileno(ibuf
), &stb
) == -1) {
536 if (fm
& FEDIT_NEWMAIL
)
538 n_perr(_("fstat"), 0);
542 if (S_ISREG(stb
.st_mode
) || isdevnull
) {
545 if (fm
& FEDIT_NEWMAIL
)
547 errno
= S_ISDIR(stb
.st_mode
) ? EISDIR
: EINVAL
;
552 /* Looks like all will be well. We must now relinquish our hold on the
553 * current set of stuff. Must hold signals while we are reading the new
554 * file, else we will ruin the message[] data structure */
556 hold_sigs(); /* TODO note on this one in quit.c:quit() */
557 if (shudclob
&& !(fm
& FEDIT_NEWMAIL
))
560 if (!(fm
& FEDIT_NEWMAIL
) && mb
.mb_sock
.s_fd
>= 0)
561 sclose(&mb
.mb_sock
); /* TODO sorry? VMAILFS->close(), thank you */
564 /* TODO There is no intermediate VOID box we've switched to: name may
565 * TODO point to the same box that we just have written, so any updates
566 * TODO we won't see! Reopen again in this case. RACY! Goes with VOID! */
567 /* TODO In addition: in case of compressed/hook boxes we lock a temporary! */
568 /* TODO We may uselessly open twice but quit() doesn't say wether we were
569 * TODO modified so we can't tell: Mailbox::is_modified() :-(( */
570 if (/*shudclob && !(fm & FEDIT_NEWMAIL) &&*/ !strcmp(name
, mailname
)) {
574 if ((ibuf
= Zopen(name
, "r")) == NULL
||
575 fstat(fileno(ibuf
), &stb
) == -1 ||
576 (!S_ISREG(stb
.st_mode
) && !isdevnull
)) {
583 /* Copy the messages into /tmp and set pointers */
584 if (!(fm
& FEDIT_NEWMAIL
)) {
585 mb
.mb_type
= MB_FILE
;
586 mb
.mb_perm
= (((options
& OPT_R_FLAG
) || (fm
& FEDIT_RDONLY
) ||
587 access(name
, W_OK
) < 0) ? 0 : MB_DELE
| MB_EDIT
);
599 if (fm
& FEDIT_SYSBOX
)
606 fseek(mb
.mb_otf
, 0L, SEEK_END
);
607 /* TODO Doing this without holding a lock is.. And not err checking.. */
608 fseek(ibuf
, mailsize
, SEEK_SET
);
610 omsgCount
= msgCount
;
615 else if (!(pstate
& PS_EDIT
))
616 lckfp
= dot_lock(name
, fileno(ibuf
), FLT_READ
, offset
,0,
617 (fm
& FEDIT_NEWMAIL
? 0 : 1));
618 else if (file_lock(fileno(ibuf
), FLT_READ
, offset
,0,
619 (fm
& FEDIT_NEWMAIL
? 0 : 1)))
623 if (!(fm
& FEDIT_NEWMAIL
)) {
624 char const *emsg
= (pstate
& PS_EDIT
)
625 ? N_("Unable to lock mailbox, aborting operation")
626 : N_("Unable to (dot) lock mailbox, aborting operation");
630 if (!(fm
& FEDIT_NEWMAIL
))
635 mailsize
= fsize(ibuf
);
637 /* TODO This is too simple minded? We should regenerate an index file
638 * TODO to be able to truly tell wether *anything* has changed! */
639 if ((fm
& FEDIT_NEWMAIL
) && UICMP(z
, mailsize
, <=, offset
)) {
643 setptr(ibuf
, offset
);
645 if ((fm
& FEDIT_NEWMAIL
) && mb
.mb_sorted
) {
652 if (lckfp
!= NULL
&& lckfp
!= (FILE*)-1) {
658 if (!(fm
& FEDIT_NEWMAIL
))
659 pstate
&= ~PS_SAW_COMMAND
;
661 if (options
& OPT_EXISTONLY
) {
662 rv
= (msgCount
== 0);
666 if ((!(pstate
& PS_EDIT
) || (fm
& FEDIT_NEWMAIL
)) && msgCount
== 0) {
667 if (!(fm
& FEDIT_NEWMAIL
)) {
669 if (!ok_blook(emptystart
))
670 n_err(_("No mail for %s\n"), who
);
676 if (fm
& FEDIT_NEWMAIL
)
677 newmailinfo(omsgCount
);
683 if (lckfp
!= NULL
&& lckfp
!= (FILE*)-1)
689 mb
.mb_type
= MB_VOID
;
696 newmailinfo(int omsgCount
)
701 for (i
= 0; i
< omsgCount
; ++i
)
702 message
[i
].m_flag
&= ~MNEWEST
;
704 if (msgCount
> omsgCount
) {
705 for (i
= omsgCount
; i
< msgCount
; ++i
)
706 message
[i
].m_flag
|= MNEWEST
;
707 printf(_("New mail has arrived.\n"));
708 if ((i
= msgCount
- omsgCount
) == 1)
709 printf(_("Loaded 1 new message.\n"));
711 printf(_("Loaded %d new messages.\n"), i
);
713 printf(_("Loaded %d messages.\n"), msgCount
);
715 check_folder_hook(TRU1
);
719 if (ok_blook(header
))
720 print_headers(omsgCount
+ 1, msgCount
, FAL0
);
730 bool_t
volatile rv
= TRU1
;
733 if (!(pstate
& PS_SOURCING
)) {
734 if (safe_signal(SIGINT
, SIG_IGN
) != SIG_IGN
)
735 safe_signal(SIGINT
, onintr
);
736 if (safe_signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
737 safe_signal(SIGHUP
, hangup
);
738 /* TODO We do a lot of redundant signal handling, especially
739 * TODO with the command line editor(s); try to merge this */
740 safe_signal(SIGTSTP
, stop
);
741 safe_signal(SIGTTOU
, stop
);
742 safe_signal(SIGTTIN
, stop
);
744 _oldpipe
= safe_signal(SIGPIPE
, SIG_IGN
);
745 safe_signal(SIGPIPE
, _oldpipe
);
747 memset(&ev
, 0, sizeof ev
);
751 char *temporary_orig_line
; /* XXX eval_ctx.ev_line not yet constant */
753 /* TODO Unless we have our signal manager (or however we do it) child
754 * TODO processes may have time slots where their execution isn't
755 * TODO protected by signal handlers (in between start and setup
756 * TODO completed). close_all_files() is only called from onintr()
757 * TODO so those may linger possibly forever */
758 if (!(pstate
& PS_SOURCING
))
762 handlerstacktop
= NULL
;
765 colour_table
= NULL
; /* XXX intermediate hack */
767 if (temporary_localopts_store
!= NULL
) /* XXX intermediate hack */
768 temporary_localopts_free(); /* XXX intermediate hack */
769 sreset((pstate
& PS_SOURCING
) != 0);
770 if (!(pstate
& PS_SOURCING
)) {
773 /* TODO Note: this buffer may contain a password. We should redefine
774 * TODO the code flow which has to do that */
775 if ((cp
= termios_state
.ts_linebuf
) != NULL
) {
776 termios_state
.ts_linebuf
= NULL
;
777 termios_state
.ts_linesize
= 0;
778 free(cp
); /* TODO pool give-back */
780 /* TODO Due to expand-on-tab of NCL the buffer may grow */
781 if (ev
.ev_line
.l
> LINESIZE
* 3) {
782 free(ev
.ev_line
.s
); /* TODO pool! but what? */
784 ev
.ev_line
.l
= ev
.ev_line_size
= 0;
788 if (!(pstate
& PS_SOURCING
) && (options
& OPT_INTERACTIVE
)) {
791 cp
= ok_vlook(newmail
);
792 if ((options
& OPT_TTYIN
) && (cp
!= NULL
|| mb
.mb_type
== MB_IMAP
)) {
795 n
= (cp
!= NULL
&& strcmp(cp
, "noimap") && strcmp(cp
, "nopoll"));
796 if ((mb
.mb_type
== MB_FILE
&& !stat(mailname
, &st
) &&
797 st
.st_size
> mailsize
) ||
799 (mb
.mb_type
== MB_IMAP
&& imap_newmail(n
) > (cp
== NULL
)) ||
801 (mb
.mb_type
== MB_MAILDIR
&& n
!= 0)) {
802 size_t odot
= PTR2SIZE(dot
- message
);
803 ui32_t odid
= (pstate
& PS_DID_PRINT_DOT
);
805 if (setfile(mailname
,
807 ((mb
.mb_perm
& MB_DELE
) ? 0 : FEDIT_RDONLY
)) < 0) {
808 exit_status
|= EXIT_ERR
;
812 if (mb
.mb_type
!= MB_IMAP
) {
813 dot
= message
+ odot
;
820 exit_status
= EXIT_OK
;
823 /* Read a line of commands and handle end of file specially */
825 ev
.ev_line
.l
= ev
.ev_line_size
;
826 n
= readline_input(NULL
, TRU1
, &ev
.ev_line
.s
, &ev
.ev_line
.l
,
828 ev
.ev_line_size
= (ui32_t
)ev
.ev_line
.l
;
829 ev
.ev_line
.l
= (ui32_t
)n
;
833 if (pstate
& PS_LOADING
)
835 if (pstate
& PS_SOURCING
) {
839 if ((options
& OPT_INTERACTIVE
) && ok_blook(ignoreeof
)) {
840 printf(_("*ignoreeof* set, use `quit' to quit.\n"));
846 temporary_orig_line
= ((pstate
& PS_SOURCING
) ||
847 !(options
& OPT_INTERACTIVE
)) ? NULL
848 : savestrbuf(ev
.ev_line
.s
, ev
.ev_line
.l
);
849 pstate
&= ~PS_HOOK_MASK
;
851 if (pstate
& PS_LOADING
) /* TODO mess; join PS_EVAL_ERROR.. */
855 if ((options
& OPT_BATCH_FLAG
) && ok_blook(batch_exit_on_error
)) {
856 if (exit_status
!= EXIT_OK
)
858 if ((pstate
& (PS_IN_LOAD
| PS_EVAL_ERROR
)) == PS_EVAL_ERROR
) {
859 exit_status
= EXIT_ERR
;
863 if (!(pstate
& PS_SOURCING
) && (options
& OPT_INTERACTIVE
)) {
864 if (ev
.ev_new_content
!= NULL
)
866 /* That *can* happen since evaluate() unstack()s on error! */
867 if (temporary_orig_line
!= NULL
)
868 tty_addhist(temporary_orig_line
, !ev
.ev_add_history
);
872 if (ev
.ev_line
.s
!= NULL
)
874 if (pstate
& PS_SOURCING
)
881 execute(char *linebuf
, size_t linesize
) /* XXX LEGACY */
885 struct colour_table
*ct_save
;
890 /* TODO Maybe recursion from within collect.c! As long as we don't have
891 * TODO a value carrier that transports the entire state of a recursion
892 * TODO we need to save away also the colour table */
894 ct_save
= colour_table
;
898 memset(&ev
, 0, sizeof ev
);
899 ev
.ev_line
.s
= linebuf
;
900 ev
.ev_line
.l
= linesize
;
901 ev
.ev_is_recursive
= TRU1
;
905 colour_table
= ct_save
;
912 evaluate(struct eval_ctx
*evp
)
915 char _wordbuf
[2], *arglist
[MAXARGC
], *cp
, *word
;
916 struct cmd_ghost
*cg
= NULL
;
917 struct cmd
const *com
= NULL
;
918 int muvec
[2], c
, e
= 1;
921 line
= evp
->ev_line
; /* XXX don't change original (buffer pointer) */
922 evp
->ev_add_history
= FAL0
;
923 evp
->ev_new_content
= NULL
;
925 /* Command ghosts that refer to shell commands or macro expansion restart */
928 /* Strip the white space away from the beginning of the command */
929 for (cp
= line
.s
; whitechar(*cp
); ++cp
)
931 line
.l
-= PTR2SIZE(cp
- line
.s
);
933 /* Ignore comments */
937 /* Handle ! differently to get the correct lexical conventions */
939 if (pstate
& PS_SOURCING
) {
940 n_err(_("Can't `!' while `source'ing\n"));
944 evp
->ev_add_history
= TRU1
;
948 /* Isolate the actual command; since it may not necessarily be
949 * separated from the arguments (as in `p1') we need to duplicate it to
950 * be able to create a NUL terminated version.
951 * We must be aware of several special one letter commands here */
953 if ((cp
= _lex_isolate(cp
)) == arglist
[0] &&
954 (*cp
== '|' || *cp
== '~' || *cp
== '?'))
956 c
= (int)PTR2SIZE(cp
- arglist
[0]);
958 word
= UICMP(z
, c
, <, sizeof _wordbuf
) ? _wordbuf
: salloc(c
+1);
959 memcpy(word
, arglist
[0], c
);
962 /* Look up the command; if not found, bitch.
963 * Normally, a blank command would map to the first command in the
964 * table; while PS_SOURCING, however, we ignore blank lines to eliminate
965 * confusion; act just the same for ghosts */
967 if ((pstate
& PS_SOURCING
) || cg
!= NULL
)
973 /* If this is the first evaluation, check command ghosts */
975 /* TODO relink list head, so it's sorted on usage over time?
976 * TODO in fact, there should be one hashmap over all commands and ghosts
977 * TODO so that the lookup could be made much more efficient than it is
978 * TODO now (two adjacent list searches! */
979 for (cg
= _cmd_ghosts
; cg
!= NULL
; cg
= cg
->next
)
980 if (!strcmp(word
, cg
->name
)) {
982 size_t i
= cg
->cmd
.l
;
983 line
.s
= salloc(i
+ line
.l
+1);
984 memcpy(line
.s
, cg
->cmd
.s
, i
);
985 memcpy(line
.s
+ i
, cp
, line
.l
);
986 line
.s
[i
+= line
.l
] = '\0';
996 if ((com
= _lex(word
)) == NULL
|| com
->func
== &c_cmdnotsupp
) {
997 bool_t s
= condstack_isskip();
998 if (!s
|| (options
& OPT_D_V
))
999 n_err(_("Unknown command%s: `%s'\n"),
1000 (s
? _(" (conditionally ignored)") : ""), word
);
1010 /* See if we should execute the command -- if a conditional we always
1011 * execute it, otherwise, check the state of cond */
1013 if (!(com
->argtype
& ARG_F
) && condstack_isskip())
1016 /* Process the arguments to the command, depending on the type it expects,
1017 * default to error. If we're PS_SOURCING an interactive command: error */
1018 if ((options
& OPT_SENDMODE
) && !(com
->argtype
& ARG_M
)) {
1019 n_err(_("May not execute `%s' while sending\n"), com
->name
);
1022 if ((pstate
& PS_SOURCING
) && (com
->argtype
& ARG_I
)) {
1023 n_err(_("May not execute `%s' while `source'ing\n"), com
->name
);
1026 if (!(mb
.mb_perm
& MB_DELE
) && (com
->argtype
& ARG_W
)) {
1027 n_err(_("May not execute `%s' -- message file is read only\n"),
1031 if (evp
->ev_is_recursive
&& (com
->argtype
& ARG_R
)) {
1032 n_err(_("Cannot recursively invoke `%s'\n"), com
->name
);
1035 if (mb
.mb_type
== MB_VOID
&& (com
->argtype
& ARG_A
)) {
1036 n_err(_("Cannot execute `%s' without active mailbox\n"), com
->name
);
1039 if (com
->argtype
& ARG_O
)
1040 OBSOLETE2(_("this command will be removed"), com
->name
);
1042 if (com
->argtype
& ARG_V
)
1043 temporary_arg_v_store
= NULL
;
1045 switch (com
->argtype
& ARG_ARGMASK
) {
1047 /* Message list defaulting to nearest forward legal message */
1048 if (_msgvec
== NULL
)
1050 if ((c
= getmsglist(cp
, _msgvec
, com
->msgflag
)) < 0)
1053 *_msgvec
= first(com
->msgflag
, com
->msgmask
);
1057 if (*_msgvec
== 0) {
1058 if (!(pstate
& PS_HOOK_MASK
))
1059 printf(_("No applicable messages\n"));
1062 e
= (*com
->func
)(_msgvec
);
1066 /* Message list with no defaults, but no error if none exist */
1067 if (_msgvec
== NULL
) {
1069 n_err(_("Invalid use of \"message list\"\n"));
1072 if ((c
= getmsglist(cp
, _msgvec
, com
->msgflag
)) < 0)
1074 e
= (*com
->func
)(_msgvec
);
1078 /* Just the straight string, with leading blanks removed */
1079 while (whitechar(*cp
))
1081 e
= (*com
->func
)(cp
);
1086 /* A vector of strings, in shell style */
1087 if ((c
= getrawlist(cp
, line
.l
, arglist
, NELEM(arglist
),
1088 ((com
->argtype
& ARG_ARGMASK
) == ARG_ECHOLIST
))) < 0)
1090 if (c
< com
->minargs
) {
1091 n_err(_("`%s' requires at least %d arg(s)\n"),
1092 com
->name
, com
->minargs
);
1095 if (c
> com
->maxargs
) {
1096 n_err(_("`%s' takes no more than %d arg(s)\n"),
1097 com
->name
, com
->maxargs
);
1100 e
= (*com
->func
)(arglist
);
1104 /* Just the constant zero, for exiting, eg. */
1105 e
= (*com
->func
)(0);
1109 n_panic(_("Unknown argument type"));
1112 if (e
== 0 && (com
->argtype
& ARG_V
) &&
1113 (cp
= temporary_arg_v_store
) != NULL
) {
1114 temporary_arg_v_store
= NULL
;
1115 evp
->ev_new_content
= cp
;
1118 if (!(com
->argtype
& ARG_H
) && !(pstate
& PS_MSGLIST_SAW_NO
))
1119 evp
->ev_add_history
= TRU1
;
1122 /* Exit the current source file on error TODO what a mess! */
1124 pstate
&= ~PS_EVAL_ERROR
;
1126 pstate
|= PS_EVAL_ERROR
;
1127 if (e
< 0 || (pstate
& PS_LOADING
)) {
1131 if (pstate
& PS_SOURCING
)
1137 if ((com
->argtype
& ARG_P
) && ok_blook(autoprint
))
1139 muvec
[0] = (int)PTR2SIZE(dot
- message
+ 1);
1141 c_type(muvec
); /* TODO what if error? re-eval! */
1143 if (!(pstate
& (PS_SOURCING
| PS_HOOK_MASK
)) && !(com
->argtype
& ARG_T
))
1144 pstate
|= PS_SAW_COMMAND
;
1146 pstate
&= ~PS_EVAL_ERROR
;
1158 if (_msgvec
!= NULL
)
1160 _msgvec
= scalloc(sz
+ 1, sizeof *_msgvec
);
1165 print_header_summary(char const *Larg
)
1167 size_t bot
, top
, i
, j
;
1171 /* Avoid any messages XXX add a make_mua_silent() and use it? */
1172 if ((options
& (OPT_VERB
| OPT_HEADERSONLY
)) == OPT_HEADERSONLY
) {
1173 freopen("/dev/null", "w", stdout
);
1174 freopen("/dev/null", "w", stderr
);
1176 assert(_msgvec
!= NULL
);
1177 i
= (getmsglist(/*TODO make arg const */UNCONST(Larg
), _msgvec
, 0) <= 0);
1178 if (options
& OPT_HEADERSONLY
) {
1179 exit_status
= (int)i
;
1184 for (bot
= msgCount
, top
= 0, i
= 0; (j
= _msgvec
[i
]) != 0; ++i
) {
1191 bot
= 1, top
= msgCount
;
1192 print_headers(bot
, top
, (Larg
!= NULL
)); /* TODO should take iterator!! */
1200 NYD_X
; /* Signal handler */
1202 if (handlerstacktop
!= NULL
) {
1206 safe_signal(SIGINT
, onintr
);
1209 pstate
|= PS_SAW_COMMAND
;
1211 while (pstate
& PS_SOURCING
)
1214 termios_state_reset();
1221 if (interrupts
!= 1)
1222 n_err_sighdl(_("Interrupt\n"));
1223 safe_signal(SIGPIPE
, _oldpipe
);
1228 announce(int printheaders
)
1233 mdot
= newfileinfo();
1236 dot
= message
+ mdot
- 1;
1237 if (printheaders
&& msgCount
> 0 && ok_blook(header
)) {
1239 print_header_group(vec
); /* XXX errors? */
1249 int u
, n
, mdot
, d
, s
, hidden
, moved
;
1252 if (mb
.mb_type
== MB_VOID
) {
1258 s
= d
= hidden
= moved
=0;
1259 for (mp
= message
, n
= 0, u
= 0; PTRCMP(mp
, <, message
+ msgCount
); ++mp
) {
1260 if (mp
->m_flag
& MNEW
)
1262 if ((mp
->m_flag
& MREAD
) == 0)
1264 if ((mp
->m_flag
& (MDELETED
| MSAVED
)) == (MDELETED
| MSAVED
))
1266 if ((mp
->m_flag
& (MDELETED
| MSAVED
)) == MDELETED
)
1268 if ((mp
->m_flag
& (MDELETED
| MSAVED
)) == MSAVED
)
1270 if (mp
->m_flag
& MHIDDEN
)
1274 /* If displayname gets truncated the user effectively has no option to see
1275 * the full pathname of the mailbox, so print it at least for '? fi' */
1276 printf(_("\"%s\": "),
1277 (_update_mailname(NULL
) ? displayname
: mailname
));
1279 printf(_("1 message"));
1281 printf(_("%d messages"), msgCount
);
1283 printf(_(" %d new"), n
);
1285 printf(_(" %d unread"), u
);
1287 printf(_(" %d deleted"), d
);
1289 printf(_(" %d saved"), s
);
1291 printf(_(" %d moved"), moved
);
1293 printf(_(" %d hidden"), hidden
);
1294 if (mb
.mb_type
== MB_CACHE
)
1295 printf(" [Disconnected]");
1296 else if (mb
.mb_perm
== 0)
1297 printf(_(" [Read only]"));
1310 enum mflag avoid
= MHIDDEN
| MDELETED
;
1314 if (ok_blook(autothread
)) {
1315 OBSOLETE(_("please use *autosort=thread* instead of *autothread*"));
1317 } else if ((cp
= ok_vlook(autosort
)) != NULL
) {
1318 if (mb
.mb_sorted
!= NULL
)
1320 mb
.mb_sorted
= sstrdup(cp
);
1324 if (mb
.mb_type
== MB_VOID
) {
1330 for (mp
= message
; PTRCMP(mp
, <, message
+ msgCount
); ++mp
)
1331 if ((mp
->m_flag
& (MNEWEST
| avoid
)) == MNEWEST
)
1334 if (!nmail
|| PTRCMP(mp
, >=, message
+ msgCount
)) {
1335 if (mb
.mb_threaded
) {
1336 for (mp
= threadroot
; mp
!= NULL
; mp
= next_in_thread(mp
))
1337 if ((mp
->m_flag
& (MNEW
| avoid
)) == MNEW
)
1340 for (mp
= message
; PTRCMP(mp
, <, message
+ msgCount
); ++mp
)
1341 if ((mp
->m_flag
& (MNEW
| avoid
)) == MNEW
)
1346 if ((mb
.mb_threaded
? (mp
== NULL
) : PTRCMP(mp
, >=, message
+ msgCount
))) {
1347 if (mb
.mb_threaded
) {
1348 for (mp
= threadroot
; mp
!= NULL
; mp
= next_in_thread(mp
))
1349 if (mp
->m_flag
& MFLAGGED
)
1352 for (mp
= message
; PTRCMP(mp
, <, message
+ msgCount
); ++mp
)
1353 if (mp
->m_flag
& MFLAGGED
)
1358 if ((mb
.mb_threaded
? (mp
== NULL
) : PTRCMP(mp
, >=, message
+ msgCount
))) {
1359 if (mb
.mb_threaded
) {
1360 for (mp
= threadroot
; mp
!= NULL
; mp
= next_in_thread(mp
))
1361 if (!(mp
->m_flag
& (MREAD
| avoid
)))
1364 for (mp
= message
; PTRCMP(mp
, <, message
+ msgCount
); ++mp
)
1365 if (!(mp
->m_flag
& (MREAD
| avoid
)))
1371 (mb
.mb_threaded
? (mp
!= NULL
) : PTRCMP(mp
, <, message
+ msgCount
)))
1372 mdot
= (int)PTR2SIZE(mp
- message
+ 1);
1373 else if (ok_blook(showlast
)) {
1374 if (mb
.mb_threaded
) {
1375 for (mp
= this_in_thread(threadroot
, -1); mp
;
1376 mp
= prev_in_thread(mp
))
1377 if (!(mp
->m_flag
& avoid
))
1379 mdot
= (mp
!= NULL
) ? (int)PTR2SIZE(mp
- message
+ 1) : msgCount
;
1381 for (mp
= message
+ msgCount
- 1; mp
>= message
; --mp
)
1382 if (!(mp
->m_flag
& avoid
))
1384 mdot
= (mp
>= message
) ? (int)PTR2SIZE(mp
- message
+ 1) : msgCount
;
1386 } else if (!nmail
&&
1387 (mb
.mb_threaded
? (mp
!= NULL
) : PTRCMP(mp
, <, message
+ msgCount
)))
1388 mdot
= (int)PTR2SIZE(mp
- message
+ 1);
1389 else if (mb
.mb_threaded
) {
1390 for (mp
= threadroot
; mp
; mp
= next_in_thread(mp
))
1391 if (!(mp
->m_flag
& avoid
))
1393 mdot
= (mp
!= NULL
) ? (int)PTR2SIZE(mp
- message
+ 1) : 1;
1395 for (mp
= message
; PTRCMP(mp
, <, message
+ msgCount
); ++mp
)
1396 if (!(mp
->m_flag
& avoid
))
1398 mdot
= PTRCMP(mp
, <, message
+ msgCount
)
1399 ? (int)PTR2SIZE(mp
- message
+ 1) : 1;
1407 initbox(char const *name
)
1412 if (mb
.mb_type
!= MB_VOID
)
1413 n_strlcpy(prevfile
, mailname
, PATH_MAX
);
1415 /* TODO name always NE mailname (but goes away for objects anyway)
1416 * TODO Well, not true no more except that in parens */
1417 _update_mailname((name
!= mailname
) ? name
: NULL
);
1419 if ((mb
.mb_otf
= Ftmp(&tempMesg
, "tmpbox", OF_WRONLY
| OF_HOLDSIGS
, 0600)) ==
1421 n_perr(_("temporary mail message file"), 0);
1424 if ((mb
.mb_itf
= safe_fopen(tempMesg
, "r", NULL
)) == NULL
) {
1425 n_perr(_("temporary mail message file"), 0);
1428 Ftmp_release(&tempMesg
);
1431 mb
.mb_active
= MB_NONE
;
1433 if (mb
.mb_sorted
!= NULL
) {
1435 mb
.mb_sorted
= NULL
;
1438 mb
.mb_flags
= MB_NOFLAGS
;
1440 dot
= prevdot
= threadroot
= NULL
;
1441 pstate
&= ~PS_DID_PRINT_DOT
;
1445 #ifdef HAVE_DOCSTRINGS
1447 print_comm_docstr(char const *comm
)
1449 struct cmd_ghost
const *cg
;
1450 struct cmd
const *cp
;
1454 /* Ghosts take precedence */
1455 for (cg
= _cmd_ghosts
; cg
!= NULL
; cg
= cg
->next
)
1456 if (!strcmp(comm
, cg
->name
)) {
1457 printf("%s -> ", comm
);
1462 for (cp
= _cmd_tab
; cp
->name
!= NULL
; ++cp
) {
1463 if (cp
->func
== &c_cmdnotsupp
)
1465 if (!strcmp(comm
, cp
->name
))
1466 printf("%s: %s\n", comm
, V_(cp
->doc
));
1467 else if (is_prefix(comm
, cp
->name
))
1468 printf("%s (%s): %s\n", comm
, cp
->name
, V_(cp
->doc
));
1475 if (!rv
&& cg
!= NULL
) {
1476 printf("\"%s\"\n", comm
);