1 // This file contains functions which implement parts of the
2 // text-mode user interface.
4 // Copyright (c) 1987-2018 by the citadel.org team
6 // This program is open source software. Use, duplication, and/or
7 // disclosure are subject to the GNU General Purpose License version 3.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 #include "textclient.h"
29 " Citadel Help Menu\n"
31 " ? Help. (Typing a '?' will give you a menu almost anywhere)\n"
32 " A Abandon this room where you stopped reading, goto next room.\n"
33 " C Chat (multiuser chat, where available)\n"
34 " D Prints directory, if there is one in the current room.\n"
35 " E Enter a message.\n"
36 " F Read all messages in the room, forward.\n"
37 " G Goto next room which has UNREAD messages.\n"
38 " H Help. Same as '?'\n"
39 " I Reads the Information file for this room.\n"
40 " K List of Known rooms.\n"
41 " L Reads the last five messages in the room.\n"
42 " N Reads all new messages in the room.\n"
43 " O Reads all old messages, backwards.\n"
44 " P Page another user (send an instant message)\n"
45 " R Reads all messages in the room, in reverse order.\n"
46 " S Skips current room without making its messages old.\n"
47 " T Terminate (logout)\n"
48 " U Ungoto (returns to the last room you were in)\n"
49 " W Displays who is currently logged in.\n"
50 " X Toggle eXpert mode (menus and help blurbs on/off)\n"
51 " Z Zap (forget) room. (Removes the room from your list)\n"
52 " + - Goto next, previous room on current floor.\n"
53 " > < Goto next, previous floor.\n"
55 " In addition, there are dot commands. You hit the . (dot), then press the\n"
56 "first letter of each word of the command. As you hit the letters, the words\n"
57 "pop onto your screen. Exceptions: after you hit .Help or .Goto, the remainder\n"
58 "of the command is a help file name or room name.\n"
60 " *** USE .<H>elp ? for additional help *** \n",
62 "The following commands are available only to Admins. A subset of these\n"
63 "commands are available to room aides when they are currently in the room\n"
64 "they are room aide for.\n"
66 " <.> <A>dmin <K>ill this room (Delete the current room)\n"
67 " <.> <A>dmin <E>dit this room (Edit the current room's parameters)\n"
68 " <.> <A>dmin <W>ho knows room (List users with access to this room)\n"
69 " <.> <A>dmin edit <U>ser (Change user's access level, password, etc.)\n"
70 " <.> <A>dmin <V>alidate new users (Process new user registrations)\n"
71 " <.> <A>dmin enter <I>nfo file (Create/change this room's banner)\n"
72 " <.> <A>dmin <R>oom <I>nvite user (Grant access to an invitation-only room)\n"
73 " <.> <A>dmin <R>oom <K>ick out user (Revoke access to an invitation-only room)\n"
74 " <.> <A>dmin <F>ile <D>elete (Delete a file from the room's directory)\n"
75 " <.> <A>dmin <F>ile <S>end over net (Transmit a file to another node)\n"
76 " <.> <A>dmin <F>ile <M>ove (Move a file to another room's directory)\n"
77 " <.> <A>dmin <M>essage edit: (Edit system banners)\n"
78 " <.> <A>dmin <P>ost (Post a message on behalf of another user)\n"
79 " <.> <A>dmin <S>ystem configuration <G>eneral (Edit global site config)\n"
80 " <.> <A>dmin <S>ystem configuration <I>nternet (Edit Internet domains)\n"
81 " <.> <A>dmin <S>ystem configuration check <M>essage base (Internal checks)\n"
82 " <.> <A>dmin <S>ystem configuration <N>etwork (Netting with other Citadels)\n"
83 " <.> <A>dmin <S>ystem configuration network <F>ilter list\n"
84 " <.> <A>dmin <T>erminate server <N>ow (Shut down Citadel server now)\n"
85 " <.> <A>dmin <T>erminate server <S>cheduled (Shut down Citadel server later)\n"
86 " <.> <A>dmin mailing <L>ist recipients (For mailing list rooms)\n"
87 " <.> <A>dmin mailing list <D>igest recipients (For mailing list rooms)\n"
88 " <.> <A>dmin <N>etwork room sharing (Replication with other Citadels)\n"
89 " \n" " In addition, the <M>ove and <D>elete commands are available at the\n" "message prompt.\n",
93 " Floors in Citadel are used to group rooms into related subject areas,\n"
94 "just as rooms are used to group messages into manageable groups.\n"
96 " You, as a user, do NOT have to use floors. If you choose not to, you suffer\n"
97 "no penalty; you will not lose access to any rooms. You may use .EC or ;C (the\n"
98 "latter is easier to use) to decide if you want to use floors. Feel free to\n"
101 " Floor options are accessed two ways. First, if you are in floor mode, the\n"
102 "<G>oto and <S>kip commands take you to the next room with new messages on the\n"
103 "current floor; if there are none left, then the system will automatically\n"
104 "switch floors (and let you know) and put you in the first room with new messages\n"
105 "on that level. (Notice that your pattern of basic use of Citadel therefore\n"
106 "doesn't really change.)\n"
108 " Direct access to floor options is via the use of a ';' command.\n"
109 "The following commands are currently available (more can be\n"
110 "added if needed):\n"
113 " This command toggles your floor mode.\n"
115 " <;G>oto FLOORNAME\n"
116 " This command causes the system to take you to the named floor.\n"
118 " <;K>nown rooms on floors\n"
119 " List all rooms on all floors. This is a very readable way to get a list of\n"
120 "all rooms on the system.\n"
122 " <;S>kip FLOORNAME\n"
123 " This command causes the system to mark all rooms on the current floor as\n"
124 "Skipped and takes you to the floor that you specify.\n"
126 " <;Z>Forget floor\n"
127 " This command causes you to forget all the rooms currently on the current\n"
128 "floor. Unfortunately, it doesn't apply to rooms that are subsequently created\n"
129 "or moved to this floor. (Sorry.)\n"
131 " Feel free to experiment, you can't hurt yourself or the system with the\n"
132 "floor stuff unless you ZForget a floor by accident.\n",
134 " New User's Introduction to the site\n"
136 " This is an introduction to the Citadel BBS concept. It is intended\n"
137 "for new users so that they can more easily become acquainted to using\n"
138 "Citadel when accessing it in the form of a text-based BBS. Of\n"
139 "course, old users might learn something new each time they read\n"
142 " Full help for the BBS commands can be obtained by typing <.H>elp SUMMARY\n"
144 " The CITADEL BBS room concept\n"
145 " ----------------------------\n"
146 " The term BBS stands for 'Bulletin Board System'. The analogy is\n"
147 "appropriate: one posts messages so that others may read them. In\n"
148 "order to organize the posts, people can post in different areas of the\n"
149 "BBS, called rooms.\n"
150 " In order to post in a certain room, you need to be 'in' that room.\n"
151 "Your current prompt is usually the room that you are in, followed the\n"
152 "greater-than-sign, such as:\n"
156 " The easiest way to traverse the room structure is with the 'Goto'\n"
157 "command, on the 'G' key. Pressing 'G' will take you to the next room\n"
158 "in the 'march list' (see below) that has new messages in it. You can\n"
159 "read these new messages with the 'N' key.\n"
160 " Once you've 'Gotoed' every room in the system (or all of the ones\n"
161 "you choose to read) you return to the 'Lobby,' the first and last room\n"
162 "in the system. If new messages get posted to rooms you've already\n"
163 "read during your session you will be brought BACK to those rooms so\n"
164 "you can read them.\n"
168 " All the room names are stored in a march list, which is just a\n"
169 "list containing all the room names. When you <G>oto or <S>kip a\n"
170 "room, you are placed in the next room in your march list THAT HAS NEW\n"
171 "MESSAGES. If you have no new messages in any of the rooms on your\n"
172 "march list, you will keep going to the Lobby>. You can choose not to\n"
173 "read certain rooms (that don't interest you) by 'Z'apping them. When\n"
174 "you <Z>ap a room, you are merely deleting it from your march list (but\n"
175 "not from anybody else's).\n"
177 " You can use the <.G>oto (note the period before the G. You can also use\n"
178 "<J>ump on some systems) to go to any room in the\n"
179 "system. You don't have to type in the complete name of a room to\n"
180 "'jump' to it; you merely need to type in enough to distinguish it from\n"
181 "the other rooms. Left-aligned matches carry a heavier weight, so if you\n"
182 "typed (for example) '.Goto TECH', you might be taken to a room called\n"
183 "'Tech Area>' even if it found a room called 'Biotech/Ethics>' first.\n"
185 " To return to a room you have previously <Z>apped, use the <.G>oto command\n"
186 "to enter it, and it will be re-inserted into your march list. In the case\n"
187 "of returning to Zapped rooms, you must type the room name in its entirety.\n"
188 "REMEMBER, rooms with no new messages will not show on your\n"
189 "march list! You must <.G>oto to a room with no new messages.\n"
190 "Incidentally, you cannot change the order of the rooms on your march list.\n"
191 "It's the same for everybody.\n"
195 " There are two special rooms on a Citadel that you should know about.\n"
197 " The first is the Lobby>. It's used for system announcements and other\n"
198 "such administrativia. You cannot <Z>ap the Lobby>. Each time you first\n"
199 "login, you will be placed in the Lobby>.\n"
201 " The second is Mail>. In Mail>, when you post a messages, you are\n"
202 "prompted to enter the screen name of the person who you want to send the\n"
203 "message to. Only the person who you send the message to can read the\n"
204 "message. NO ONE else can read it, not even the admins. Mail> is the\n"
205 "first room on the march list, and is un-<Z>appable, so you can be sure\n"
206 "that the person will get the message.\n"
210 " These people, along with the room admins, keep the site running smoothly.\n"
212 " Among the many things that admins do are: create rooms, delete\n"
213 "rooms, set access levels, invite users, check registration, grant\n"
214 "room admin status, and countless other things. They have access to the\n"
215 "Aide> room, a special room only for admins.\n"
217 " If you enter a mail message to 'Sysop' it will be placed in the\n"
218 "Aide> room so that the next admin online will read it and deal with it.\n"
219 "Admins cannot <Z>ap rooms. All the rooms are always on each admin's\n"
220 "march list. Admins can read *any* and *every* room, but they *CAN* *NOT*\n"
221 "read other users' Mail!\n"
225 " Room admins are granted special privileges in specific rooms.\n"
226 "They are *NOT* true system admins; their power extends only over the\n"
227 "rooms that they control, and they answer to the system admins.\n"
229 " A room admin's job is to keep the topic of the their room on track,\n"
230 "with nudges in the right direction now and then. A room admin can also\n"
231 "move an off topic post to another room, or delete a post, if he/she\n"
232 "feels it is necessary. \n"
234 " Currently, very few rooms have room admins. Most rooms do not need\n"
235 "their own specific room admin. Being a room admin requires a certain\n"
236 "amount of trust, due to the additional privileges granted.\n"
238 " Citadel messages\n"
239 " ----------------\n"
240 " Most of the time, the BBS code does not print a lot of messages\n"
241 "to your screen. This is a great benefit once you become familiar\n"
242 "with the system, because you do not have endless menus and screens\n"
243 "to navigate through. nevertheless, there are some messages which you\n"
244 "might see from time to time.\n"
246 " 'There were messages posted while you were entering.'\n"
248 " This is also known as 'simulposting.' When you start entering a \n"
249 "message, the system knows where you last left off. When you save\n"
250 "your message, the system checks to see if any messages were entered\n"
251 "while you were typing. This is so that you know whether you need\n"
252 "to go back and re-read the last few messages. This message may appear\n"
255 " '*** You have new mail'\n"
257 " This message is essentially the same as the above message, but can\n"
258 "appear at any time. It simply means that new mail has arrived for you while\n"
259 "you are logged in. Simply go to the Mail> room to read it.\n"
263 " The <W>ho command shows you the names of all users who are currently\n"
264 "online. It also shows you the name of the room they are currently in. If\n"
265 "they are in any type of private room, however, the room name will simply\n"
266 "display as '<private room>'. Along with this information is displayed the\n"
267 "name of the host computer the user is logged in from.\n",
269 "To send mail on this system, go to the Mail> room (using the command .G Mail)\n"
270 "and press E to enter a message. You will be prompted with:\n"
272 " Enter Recipient:\n"
274 " At this point you may enter the name of another user on the system. Private\n"
275 "mail is only readable by the sender and recipient. There is no need to delete\n"
276 "mail after it is read; it will scroll out automatically.\n"
278 " To send mail to another user on the Citadel network, simply type the\n"
279 "user's name, followed by @ and then the system name. For example,\n"
281 " Enter Recipient: Joe Schmoe @ citadrool\n"
283 " If your account is enabled for Internet mail, you can also send email to\n"
284 "anyone on the Internet here. Simply enter their address at the prompt:\n"
285 " \n" " Enter Recipient: ajc@herring.fishnet.com\n",
287 " Welcome to the network. Messages entered in a network room will appear in\n"
288 "that room on all other systems carrying it (The name of the room, however,\n" "may be different on other systems).\n",
290 " Citadel is the premier 'online community' (i.e. Bulletin Board System)\n"
291 "software. It runs on all POSIX-compliant systems, including Linux. It is an\n"
292 "advanced client/server application, and is being actively maintained.\n"
293 " \n" " For more info, visit UNCENSORED! BBS at uncensored.citadel.org\n",
295 "Extended commands are available using the period ( . ) key. To use\n"
296 "a dot command, press the . key, and then enter the first letter of\n"
297 "each word in the command. The words will appear as you enter the keys.\n"
298 "You can also backspace over partially entered commands. The following\n"
299 "commands are available:\n"
301 " <.> <H>elp: Displays help files. Type .H followed by a help file\n"
302 " name. You are now reading <.H>elp SUMMARY\n"
304 " <.> <G>oto: Jumps directly to the room you specify. You can also\n"
305 " type a partial room name, just enough to make it unique,\n"
306 " and it'll find the room you're looking for. As with the\n"
307 " regular <G>oto command, messages in the current room will\n"
308 " be marked as read.\n"
310 " <.> <S>kip, goto: This is similar to <.G>oto, except it doesn't mark\n"
311 " messages in the current room as read.\n"
313 " <.> list <Z>apped rooms Shows all rooms you've <Z>apped (forgotten)\n"
316 " Terminate (logoff) commands:\n"
318 " <.> <T>erminate and <Q>uit Log off and disconnect.\n"
319 " <.> <T>erminate and <S>tay online Log in as a different user.\n"
324 " <.> <R>ead <N>ew messages Same as <N>ew\n"
325 " <.> <R>ead <O>ld msgs reverse Same as <O>ld\n"
326 " <.> <R>ead <L>ast five msgs Same as <L>ast5\n"
327 " <.> read <L>ast: Allows you to specify how many\n"
328 " messages you wish to read.\n"
330 " <.> <R>ead <U>ser listing: Lists all users on the system if\n"
331 " you just hit enter, otherwise\n"
332 " you can specify a partial match\n"
334 " <.> <R>ead <T>extfile formatted File 'download' commands.\n"
335 " <.> <R>ead file using <X>modem \n"
336 " <.> <R>ead file using <Y>modem \n"
337 " <.> <R>ead file using <Z>modem \n"
338 " <.> <R>ead <F>ile unformatted \n"
339 " <.> <R>ead <D>irectory \n"
341 " <.> <R>ead <I>nfo file Read the room info file.\n"
342 " <.> <R>ead <B>io Read other users' 'bio' files.\n"
343 " <.> <R>ead <C>onfiguration Display your 'preferences'.\n"
344 " <.> <R>ead <S>ystem info Display system statistics.\n"
349 " <.> <E>nter <M>essage Post a message in this room.\n"
350 " <.> <E>nter message with <E>ditor Post using a full-screen editor.\n"
351 " <.> <E>nter <A>SCII message Post 'raw' (use this when 'pasting'\n"
352 " a message from your clipboard).\n"
354 " <.> <E>nter <P>assword Change your password.\n"
355 " <.> <E>nter <C>onfiguration Change your 'preferences'.\n"
356 " <.> <E>nter a new <R>oom Create a new room.\n"
357 " <.> <E>nter re<G>istration Register (name, address, etc.)\n"
358 " <.> <E>nter <B>io Enter/change your 'bio' file.\n"
360 " <.> <E>nter <T>extfile File 'upload' commands.\n"
361 " <.> <E>nter file using <X>modem \n"
362 " <.> <E>nter file using <Y>modem \n"
363 " <.> <E>nter file using <Z>modem \n"
366 " Wholist commands:\n"
368 " <.> <W>holist <L>ong Same as <W>ho is online, but displays\n"
369 " more detailed information.\n"
370 " <.> <W>holist <R>oomname Masquerade your room name (other users\n"
371 " see the name you enter rather than the\n"
372 " actual name of the room you're in)\n"
373 " <.> <W>holist <H>ostname Masquerade your host name\n"
374 " <.> <E>nter <U>sername Masquerade your user name (Admins only)\n"
375 " <.> <W>holist <S>tealth mode Enter/exit 'stealth mode' (when in stealth\n"
376 " mode you are invisible on the wholist)\n"
379 " Floor commands (if using floor mode)\n"
380 " ;<C>onfigure floor mode - turn floor mode on or off\n"
381 " ;<G>oto floor: - jump to a specific floor\n"
382 " ;<K>nown rooms - list all rooms on all floors\n"
383 " ;<S>kip to floor: - skip current floor, jump to another\n"
384 " ;<Z>ap floor - zap (forget) all rooms on this floor\n"
387 " Administrative commands: \n"
389 " <.> <A>dmin <K>ill this room \n"
390 " <.> <A>dmin <E>dit this room \n"
391 " <.> <A>dmin <W>ho knows room \n"
392 " <.> <A>dmin edit <U>ser \n"
393 " <.> <A>dmin <V>alidate new users \n"
394 " <.> <A>dmin enter <I>nfo file \n"
395 " <.> <A>dmin <R>oom <I>nvite user \n"
396 " <.> <A>dmin <R>oom <K>ick out user \n"
397 " <.> <A>dmin <F>ile <D>elete \n"
398 " <.> <A>dmin <F>ile <S>end over net \n"
399 " <.> <A>dmin <F>ile <M>ove \n"
400 " <.> <A>dmin <M>essage edit: \n"
401 " <.> <A>dmin <P>ost \n"
402 " <.> <A>dmin <S>ystem configuration \n"
403 " <.> <A>dmin <T>erminate server <N>ow\n" " <.> <A>dmin <T>erminate server <S>cheduled\n"
414 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
418 char rc_exp_cmd[1024];
419 int rc_allow_attachments;
420 int rc_display_message_numbers;
421 int rc_force_mail_prompts;
422 int rc_remember_passwords;
425 int rc_prompt_control = 0;
426 time_t rc_idle_threshold = (time_t) 900;
427 char rc_url_cmd[SIZ];
428 char rc_open_cmd[SIZ];
429 char rc_gotmail_cmd[SIZ];
431 int next_lazy_cmd = 5;
433 extern int screenwidth, screenheight;
435 extern CtdlIPC *ipc_for_signal_handlers; /* KLUDGE cover your eyes */
436 struct citcmd *cmdlist = NULL;
439 /* these variables are local to this module */
440 char keepalives_enabled = KA_YES; /* send NOOPs to server when idle */
441 int ok_to_interrupt = 0; /* print instant msgs asynchronously */
442 time_t AnsiDetect; /* when did we send the detect code? */
443 int enable_color = 0; /* nonzero for ANSI color */
447 * If an interesting key has been pressed, return its value, otherwise 0
449 char was_a_key_pressed(void) {
459 retval = select(1, &rfds, NULL, NULL, &tv);
461 /* Careful! Disable keepalives during keyboard polling; we're probably
462 * in the middle of a data transfer from the server, in which case
463 * sending a NOOP would throw the client protocol out of sync.
465 if ((retval > 0) && FD_ISSET(0, &rfds)) {
466 set_keepalives(KA_NO);
467 the_character = inkey();
468 set_keepalives(KA_YES);
473 return (the_character);
478 * print_instant() - print instant messages if there are any
480 void print_instant(void) {
488 char *listing = NULL;
489 int r; /* IPC result code */
491 if (instant_msgs == 0) {
499 if (IsEmptyStr(rc_exp_cmd)) {
504 while (instant_msgs != 0) {
505 r = CtdlIPCGetInstantMessage(ipc_for_signal_handlers, &listing, buf);
510 instant_msgs = extract_int(buf, 0);
511 timestamp = extract_long(buf, 1);
512 flags = extract_int(buf, 2);
513 extract_token(sender, buf, 3, '|', sizeof sender);
514 extract_token(node, buf, 4, '|', sizeof node);
515 strcpy(last_paged, sender);
517 localtime_r(×tamp, &stamp);
519 /* If the page is a Logoff Request, honor it. */
525 if (!IsEmptyStr(rc_exp_cmd)) {
526 outpipe = popen(rc_exp_cmd, "w");
527 if (outpipe != NULL) {
528 /* Header derived from flags */
530 fprintf(outpipe, "Please log off now, as requested ");
532 fprintf(outpipe, "Broadcast message ");
534 fprintf(outpipe, "Chat request ");
536 fprintf(outpipe, "Message ");
537 /* Timestamp. Can this be improved? */
538 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)
539 fprintf(outpipe, "at 12:%02d%cm", stamp.tm_min, stamp.tm_hour ? 'p' : 'a');
540 else if (stamp.tm_hour > 12) /* pm */
541 fprintf(outpipe, "at %d:%02dpm", stamp.tm_hour - 12, stamp.tm_min);
543 fprintf(outpipe, "at %d:%02dam", stamp.tm_hour, stamp.tm_min);
544 fprintf(outpipe, " from %s", sender);
545 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
546 fprintf(outpipe, " @%s", node);
547 fprintf(outpipe, ":\n%s\n", listing);
549 if (instant_msgs == 0)
554 /* fall back to built-in instant message display */
557 /* Header derived from flags */
559 scr_printf("Please log off now, as requested ");
561 scr_printf("Broadcast message ");
563 scr_printf("Chat request ");
565 scr_printf("Message ");
567 /* Timestamp. Can this be improved? */
568 if (stamp.tm_hour == 0 || stamp.tm_hour == 12) /* 12am/12pm */
569 scr_printf("at 12:%02d%cm", stamp.tm_min, stamp.tm_hour ? 'p' : 'a');
570 else if (stamp.tm_hour > 12) /* pm */
571 scr_printf("at %d:%02dpm", stamp.tm_hour - 12, stamp.tm_min);
573 scr_printf("at %d:%02dam", stamp.tm_hour, stamp.tm_min);
576 scr_printf(" from %s", sender);
578 /* Remote node, if any */
579 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
580 scr_printf(" @%s", node);
583 fmout(screenwidth, NULL, listing, NULL, 0);
587 scr_printf("\n---\n");
594 void set_keepalives(int s) {
595 keepalives_enabled = (char) s;
600 * This loop handles the "keepalive" messages sent to the server when idling.
602 static time_t idlet = 0;
603 static void really_do_keepalive(void) {
606 /* This may sometimes get called before we are actually connected
607 * to the server. Don't do anything if we aren't connected. -IO
609 if (!ipc_for_signal_handlers)
612 /* If full keepalives are enabled, send a NOOP to the server and
613 * wait for a response.
615 if (keepalives_enabled == KA_YES) {
616 CtdlIPCNoop(ipc_for_signal_handlers);
617 if (instant_msgs > 0) {
618 if (ok_to_interrupt == 1) {
619 scr_printf("\r%64s\r", "");
621 scr_printf("%s%c ", room_name, room_prompt(room_flags));
627 /* If half keepalives are enabled, send a QNOP to the server (if the
628 * server supports it) and then do nothing.
630 if ((keepalives_enabled == KA_HALF)
631 && (ipc_for_signal_handlers->ServInfo.supports_qnop > 0)) {
632 CtdlIPC_chat_send(ipc_for_signal_handlers, "QNOP");
637 /* I changed this from static to not because I need to call it from
638 * screen.c, either that or make something in screen.c not static.
639 * Fix it how you like. Why all the staticness? stu
641 void do_keepalive(void)
646 if ((now - idlet) < ((long) S_KEEPALIVE)) {
650 /* Do a space-backspace to keep terminal sessions from idling out */
651 scr_printf(" %c", 8);
654 really_do_keepalive();
659 { /* get a character from the keyboard, with */
660 int a; /* the watchdog timer in effect if necessary */
669 /* This loop waits for keyboard input. If the keepalive
670 * timer expires, it sends a keepalive to the server if
671 * necessary and then waits again.
678 tv.tv_sec = S_KEEPALIVE;
681 select(1, &rfds, NULL, NULL, &tv);
682 } while (!FD_ISSET(0, &rfds));
684 /* At this point, there's input, so fetch it.
685 * (There's a hole in the bucket...)
687 a = scr_getc(SCR_BLOCK);
700 { /* Returns 1 for yes, 0 for no */
716 /* Returns 1 for yes, 0 for no, arg is default value */
740 * Function to read a line of text from the terminal.
742 * string Pointer to string buffer
744 * noshow Echo asterisks instead of keystrokes?
745 * bs Allow backspacing out of the prompt? (returns -1 if this happens)
747 * returns: string length
749 int ctdl_getline(char *string, int lim, int noshow, int bs)
751 int pos = strlen(string);
754 if (noshow && !IsEmptyStr(string)) {
755 int num_stars = strlen(string);
756 while (num_stars--) {
760 scr_printf("%s", string);
766 if ((ch == 8) && (pos > 0)) { /* backspace */
773 else if ((ch == 8) && (pos == 0) && (bs)) { /* backspace out of the prompt */
777 else if ((ch == 23) && (pos > 0)) { /* Ctrl-W deletes a word */
778 while ((pos > 0) && !isspace(string[pos])) {
784 while ((pos > 0) && !isspace(string[pos - 1])) {
792 else if (ch == 10) { /* return */
798 else if (isprint(ch)) { /* payload characters */
799 scr_putc((noshow ? '*' : ch));
808 * newprompt() prompt for a string, print the existing value, and
809 * allow the user to press return to keep it...
810 * If len is negative, pass the "noshow" flag to ctdl_getline()
812 void strprompt(char *prompt, char *str, int len)
816 scr_printf("%s", prompt);
820 ctdl_getline(str, abs(len), (len < 0), 0);
825 * boolprompt() - prompt for a yes/no, print the existing value and
826 * allow the user to press return to keep it...
828 int boolprompt(char *prompt, int prev_val)
833 scr_printf("%s ", prompt);
836 color(BRIGHT_MAGENTA);
837 scr_printf("%s", (prev_val ? "Yes" : "No"));
841 r = (yesno_d(prev_val));
847 * intprompt() - like strprompt(), except for an integer
848 * (note that it RETURNS the new value!)
850 int intprompt(char *prompt, int ival, int imin, int imax)
858 snprintf(buf, sizeof buf, "%d", i);
859 strprompt(prompt, buf, 15);
861 for (p = 0; !IsEmptyStr(&buf[p]); ++p) {
862 if ((!isdigit(buf[p]))
863 && ((buf[p] != '-') || (p != 0)))
867 scr_printf("*** Must be no less than %d.\n", imin);
869 scr_printf("*** Must be no more than %d.\n", imax);
870 } while ((i < imin) || (i > imax));
875 * newprompt() prompt for a string with no existing value
876 * (clears out string buffer first)
877 * If len is negative, pass the "noshow" flag to ctdl_getline()
879 void newprompt(char *prompt, char *str, int len)
882 color(BRIGHT_MAGENTA);
883 scr_printf("%s", prompt);
885 ctdl_getline(str, abs(len), (len < 0), 0);
891 { /* returns a lower case value */
900 * parse the citadel.rc file
902 void load_command_set(void)
907 struct citcmd *lastcmd = NULL;
911 /* first, set up some defaults for non-required variables */
913 strcpy(editor_path, "");
914 strcpy(printcmd, "");
915 strcpy(imagecmd, "");
916 strcpy(rc_username, "");
917 strcpy(rc_password, "");
920 rc_allow_attachments = 0;
921 rc_remember_passwords = 0;
922 strcpy(rc_exp_cmd, "");
923 rc_display_message_numbers = 0;
924 rc_force_mail_prompts = 0;
927 strcpy(rc_url_cmd, "");
928 strcpy(rc_open_cmd, "");
929 strcpy(rc_gotmail_cmd, "");
931 rc_encrypt = RC_DEFAULT;
934 /* now try to open the citadel.rc file */
937 if (getenv("HOME") != NULL) {
938 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
939 ccfile = fopen(buf, "r");
941 if (ccfile == NULL) {
942 ccfile = fopen(file_citadel_rc, "r");
944 if (ccfile == NULL) {
945 ccfile = fopen("/etc/citadel.rc", "r");
947 if (ccfile == NULL) {
948 ccfile = fopen("./citadel.rc", "r");
950 if (ccfile == NULL) {
951 perror("commands: cannot open citadel.rc");
954 while (fgets(buf, sizeof buf, ccfile) != NULL) {
955 while ((!IsEmptyStr(buf)) ? (isspace(buf[strlen(buf) - 1])) : 0)
956 buf[strlen(buf) - 1] = 0;
958 if (!strncasecmp(buf, "encrypt=", 8)) {
959 if (!strcasecmp(&buf[8], "yes")) {
963 fprintf(stderr, "citadel.rc requires encryption support but citadel is not compiled with OpenSSL");
968 else if (!strcasecmp(&buf[8], "no")) {
970 } else if (!strcasecmp(&buf[8], "default")) {
971 rc_encrypt = RC_DEFAULT;
976 if (!strncasecmp(buf, "editor=", 7)) {
977 strcpy(editor_path, &buf[7]);
980 if (!strncasecmp(buf, "printcmd=", 9))
981 strcpy(printcmd, &buf[9]);
983 if (!strncasecmp(buf, "imagecmd=", 9))
984 strcpy(imagecmd, &buf[9]);
986 if (!strncasecmp(buf, "expcmd=", 7))
987 strcpy(rc_exp_cmd, &buf[7]);
989 if (!strncasecmp(buf, "use_floors=", 11)) {
990 if (!strcasecmp(&buf[11], "yes"))
991 rc_floor_mode = RC_YES;
992 if (!strcasecmp(&buf[11], "no"))
993 rc_floor_mode = RC_NO;
994 if (!strcasecmp(&buf[11], "default"))
995 rc_floor_mode = RC_DEFAULT;
997 if (!strncasecmp(buf, "beep=", 5)) {
998 rc_exp_beep = atoi(&buf[5]);
1000 if (!strncasecmp(buf, "allow_attachments=", 18)) {
1001 rc_allow_attachments = atoi(&buf[18]);
1003 if (!strncasecmp(buf, "idle_threshold=", 15)) {
1004 rc_idle_threshold = atol(&buf[15]);
1006 if (!strncasecmp(buf, "remember_passwords=", 19)) {
1007 rc_remember_passwords = atoi(&buf[19]);
1009 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
1010 rc_display_message_numbers = atoi(&buf[24]);
1012 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
1013 rc_force_mail_prompts = atoi(&buf[19]);
1015 if (!strncasecmp(buf, "ansi_color=", 11)) {
1016 if (!strncasecmp(&buf[11], "on", 2))
1018 if (!strncasecmp(&buf[11], "auto", 4))
1019 rc_ansi_color = 2; /* autodetect */
1020 if (!strncasecmp(&buf[11], "user", 4))
1021 rc_ansi_color = 3; /* user config */
1023 if (!strncasecmp(buf, "status_line=", 12)) {
1024 if (!strncasecmp(&buf[12], "on", 2))
1025 enable_status_line = 1;
1027 if (!strncasecmp(buf, "use_background=", 15)) {
1028 if (!strncasecmp(&buf[15], "on", 2))
1029 rc_color_use_bg = 9;
1031 if (!strncasecmp(buf, "prompt_control=", 15)) {
1032 if (!strncasecmp(&buf[15], "on", 2))
1033 rc_prompt_control = 1;
1034 if (!strncasecmp(&buf[15], "user", 4))
1035 rc_prompt_control = 3; /* user config */
1037 if (!strncasecmp(buf, "username=", 9))
1038 strcpy(rc_username, &buf[9]);
1040 if (!strncasecmp(buf, "password=", 9))
1041 strcpy(rc_password, &buf[9]);
1043 if (!strncasecmp(buf, "urlcmd=", 7))
1044 strcpy(rc_url_cmd, &buf[7]);
1046 if (!strncasecmp(buf, "opencmd=", 7))
1047 strcpy(rc_open_cmd, &buf[8]);
1049 if (!strncasecmp(buf, "gotmailcmd=", 11))
1050 strcpy(rc_gotmail_cmd, &buf[11]);
1052 if (!strncasecmp(buf, "cmd=", 4)) {
1053 strcpy(buf, &buf[4]);
1055 cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
1057 cptr->c_cmdnum = atoi(buf);
1058 for (d = strlen(buf); d >= 0; --d)
1061 strcpy(buf, &buf[b + 1]);
1063 cptr->c_axlevel = atoi(buf);
1064 for (d = strlen(buf); d >= 0; --d)
1067 strcpy(buf, &buf[b + 1]);
1069 for (a = 0; a < 5; ++a)
1070 cptr->c_keys[a][0] = 0;
1074 buf[strlen(buf) + 1] = 0;
1075 while (!IsEmptyStr(buf)) {
1077 for (d = strlen(buf); d >= 0; --d)
1080 strncpy(cptr->c_keys[a], buf, b);
1081 cptr->c_keys[a][b] = 0;
1083 strcpy(buf, &buf[b + 1]);
1090 if (cmdlist == NULL)
1093 lastcmd->next = cptr;
1103 * return the key associated with a command
1105 char keycmd(char *cmdstr)
1109 for (a = 0; !IsEmptyStr(&cmdstr[a]); ++a)
1110 if (cmdstr[a] == '&')
1111 return (tolower(cmdstr[a + 1]));
1117 * Output the string from a key command without the ampersand
1118 * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
1120 char *cmd_expand(char *strbuf, int mode)
1123 static char exp[64];
1126 strcpy(exp, strbuf);
1128 for (a = 0; exp[a]; ++a) {
1129 if (strbuf[a] == '&') {
1131 /* dont echo these non mnemonic command keys */
1132 int noecho = strbuf[a + 1] == '<' || strbuf[a + 1] == '>' || strbuf[a + 1] == '+' || strbuf[a + 1] == '-';
1135 strcpy(&exp[a], &exp[a + 1 + noecho]);
1139 strcpy(buf, &exp[a + 2]);
1145 if (!strncmp(&exp[a], "^r", 2)) {
1147 strcpy(&exp[a], room_name);
1148 strcat(exp, &buf[a + 2]);
1150 if (!strncmp(&exp[a], "^c", 2)) {
1152 strcpy(&exp[a + 1], &exp[a + 2]);
1162 * Comparison function to determine if entered commands match a
1163 * command loaded from the config file.
1165 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
1176 for (a = 0; a < ncomp; ++a) {
1177 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
1178 || (cptr->c_axlevel > cmdax))
1186 * This function returns 1 if a given command requires a string input
1188 int requires_string(struct citcmd *cptr, int ncomp)
1193 strcpy(buf, cptr->c_keys[ncomp - 1]);
1194 for (a = 0; !IsEmptyStr(&buf[a]); ++a) {
1203 * Input a command at the main prompt.
1204 * This function returns an integer command number. If the command prompts
1205 * for a string then it is placed in the supplied buffer.
1207 int getcmd(CtdlIPC * ipc, char *argbuf)
1216 struct citcmd *cptr;
1219 * Starting a new command now, so set sigcaught to 0. This variable
1220 * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
1221 * been interrupted by a keypress.
1225 /* Switch color support on or off if we're in user mode */
1226 if (rc_ansi_color == 3) {
1227 if (userflags & US_COLOR)
1232 /* if we're running in idiot mode, display a cute little menu */
1235 scr_printf("-----------------------------------------------------------------------\n");
1236 scr_printf("Room cmds: <K>nown rooms, <G>oto next room, <.G>oto a specific room,\n");
1237 scr_printf(" <S>kip this room, <A>bandon this room, <Z>ap this room,\n");
1238 scr_printf(" <U>ngoto (move back)\n");
1239 scr_printf("Message cmds: <N>ew msgs, <F>orward read, <R>everse read, <O>ld msgs,\n");
1240 scr_printf(" <L>ast five msgs, <E>nter a message\n");
1241 scr_printf("General cmds: <?> help, <T>erminate, <C>hat, <W>ho is online\n");
1242 scr_printf("Misc: <X> toggle eXpert mode, <D>irectory\n");
1244 scr_printf(" (Type .Help SUMMARY for extended commands, <X> to hide this menu)\n");
1245 scr_printf("-----------------------------------------------------------------------\n");
1251 for (a = 0; a < 5; ++a)
1253 /* now the room prompt... */
1254 ok_to_interrupt = 1;
1255 color(BRIGHT_WHITE);
1256 scr_printf("\n%s", room_name);
1258 scr_printf("%c ", room_prompt(room_flags));
1262 ok_to_interrupt = 0;
1264 /* Handle the backspace key, but only if there's something
1265 * to backspace over...
1267 if ((ch == 8) && (cmdpos > 0)) {
1268 back(cmdspaces[cmdpos - 1] + 1);
1272 /* Spacebar invokes "lazy traversal" commands */
1273 if ((ch == 32) && (cmdpos == 0)) {
1274 this_lazy_cmd = next_lazy_cmd;
1275 if (this_lazy_cmd == 13)
1277 if (this_lazy_cmd == 5)
1279 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1280 if (cptr->c_cmdnum == this_lazy_cmd) {
1281 for (a = 0; a < 5; ++a)
1282 if (cptr->c_keys[a][0] != 0)
1283 scr_printf("%s ", cmd_expand(cptr->c_keys[a], 0));
1285 return (this_lazy_cmd);
1289 return (this_lazy_cmd);
1291 /* Otherwise, process the command */
1292 cmdbuf[cmdpos] = tolower(ch);
1294 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1295 if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1297 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1298 cmdspaces[cmdpos] = strlen(cmd_expand(cptr->c_keys[cmdpos], 0));
1300 if ((cptr->c_keys[cmdpos + 1]) != 0)
1306 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1307 if (cmdmatch(cmdbuf, cptr, 5)) {
1308 /* We've found our command. */
1309 if (requires_string(cptr, cmdpos)) {
1311 ctdl_getline(argbuf, 64, 0, 0);
1316 /* If this command is one that changes rooms,
1317 * then the next lazy-command (space bar)
1318 * should be "read new" instead of "goto"
1320 if ((cptr->c_cmdnum == 5)
1321 || (cptr->c_cmdnum == 6)
1322 || (cptr->c_cmdnum == 47)
1323 || (cptr->c_cmdnum == 52)
1324 || (cptr->c_cmdnum == 16)
1325 || (cptr->c_cmdnum == 20))
1328 /* If this command is "read new"
1329 * then the next lazy-command (space bar)
1332 if (cptr->c_cmdnum == 13)
1335 return (cptr->c_cmdnum);
1341 scr_printf("\rOne of ... \n");
1342 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1343 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1344 for (a = 0; a < 5; ++a) {
1345 keyopt(cmd_expand(cptr->c_keys[a], 1));
1353 scr_printf("\n%s%c ", room_name, room_prompt(room_flags));
1355 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1356 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1357 for (a = 0; a < cmdpos; ++a) {
1358 scr_printf("%s ", cmd_expand(cptr->c_keys[a], 0));
1373 * set tty modes. commands are:
1375 * 01- set to Citadel mode
1376 * 2 - save current settings for later restoral
1377 * 3 - restore saved settings
1379 void stty_ctdl(int cmd)
1380 { /* SysV version of stty_ctdl() */
1381 struct termios live;
1382 static struct termios saved_settings;
1383 static int last_cmd = 0;
1390 if ((cmd == 0) || (cmd == 1)) {
1391 tcgetattr(0, &live);
1392 live.c_iflag = ISTRIP | IXON | IXANY;
1393 live.c_oflag = OPOST | ONLCR;
1394 live.c_lflag = ISIG | NOFLSH;
1396 live.c_cc[VINTR] = 0;
1397 live.c_cc[VQUIT] = 0;
1399 /* do we even need this stuff anymore? */
1400 /* live.c_line=0; */
1401 live.c_cc[VERASE] = 8;
1402 live.c_cc[VKILL] = 24;
1403 live.c_cc[VEOF] = 1;
1404 live.c_cc[VEOL] = 255;
1405 live.c_cc[VEOL2] = 0;
1406 live.c_cc[VSTART] = 0;
1407 tcsetattr(0, TCSADRAIN, &live);
1410 tcgetattr(0, &saved_settings);
1413 tcsetattr(0, TCSADRAIN, &saved_settings);
1419 // this is the old version which uses sgtty.h instead of termios.h
1421 void stty_ctdl(int cmd)
1422 { /* BSD version of stty_ctdl() */
1424 static struct sgttyb saved_settings;
1425 static int last_cmd = 0;
1432 if ((cmd == 0) || (cmd == 1)) {
1434 live.sg_flags |= CBREAK;
1435 live.sg_flags |= CRMOD;
1436 live.sg_flags |= NL1;
1437 live.sg_flags &= ~ECHO;
1439 live.sg_flags |= NOFLSH;
1443 gtty(0, &saved_settings);
1446 stty(0, &saved_settings);
1453 * display_help() - help text viewer
1455 void display_help(CtdlIPC * ipc, char *name)
1458 int num_helps = sizeof(helpnames) / sizeof(char *);
1460 for (i = 0; i < num_helps; ++i) {
1461 if (!strcasecmp(name, helpnames[i])) {
1462 fmout(screenwidth, NULL, helptexts[i], NULL, 0);
1467 scr_printf("'%s' not found. Enter one of:\n", name);
1468 for (i = 0; i < num_helps; ++i) {
1469 scr_printf(" %s\n", helpnames[i]);
1475 * fmout() - Citadel text formatter and paginator
1477 int fmout(int width, /* screen width to use */
1478 FILE * fpin, /* file to read from, or NULL to format given text */
1479 char *text, /* text to be formatted (when fpin is NULL */
1480 FILE * fpout, /* file to write to, or NULL to write to screen */
1481 int subst) { /* nonzero if we should use hypertext mode */
1482 char *buffer = NULL; /* The current message */
1483 char *word = NULL; /* What we are about to actually print */
1484 char *e; /* Pointer to position in text */
1485 char old = 0; /* The previous character */
1486 int column = 0; /* Current column */
1487 size_t i; /* Generic counter */
1489 /* Space for a single word, which can be at most screenwidth */
1490 word = (char *) calloc(1, width);
1492 scr_printf("Can't alloc memory to print message: %s!\n", strerror(errno));
1496 /* Read the entire message body into memory */
1498 buffer = load_message_from_file(fpin);
1500 scr_printf("Can't print message: %s!\n", strerror(errno));
1508 /* Run the message body */
1510 /* Catch characters that shouldn't be there at all */
1515 /* First, are we looking at a newline? */
1518 if (*e == ' ') { /* Paragraph */
1520 fprintf(fpout, "\n");
1525 } else if (old != ' ') { /* Don't print two spaces */
1527 fprintf(fpout, " ");
1537 /* Are we looking at a nonprintable?
1538 * (This section is now commented out because we could be displaying
1539 * a character set like UTF-8 or ISO-8859-1.)
1540 if ( (*e < 32) || (*e > 126) ) {
1545 /* Or are we looking at a space? */
1548 if (column >= width - 1) {
1549 /* Are we in the rightmost column? */
1551 fprintf(fpout, "\n");
1556 } else if (!(column == 0 && old == ' ')) {
1557 /* Eat only the first space on a line */
1559 fprintf(fpout, " ");
1565 /* ONLY eat the FIRST space on a line */
1571 /* Read a word, slightly messy */
1574 if (!isprint(e[i]) && !isspace(e[i]))
1581 /* We should never see these, but... slightly messy */
1582 if (e[i] == '\t' || e[i] == '\f' || e[i] == '\v')
1585 /* Break up really long words */
1586 /* TODO: auto-hyphenation someday? */
1589 strncpy(word, e, i);
1592 /* Decide where to print the word */
1593 if (column + i >= width) {
1594 /* Wrap to the next line */
1596 fprintf(fpout, "\n");
1603 /* Print the word */
1605 fprintf(fpout, "%s", word);
1607 scr_printf("%s", word);
1610 e += i; /* Start over with the whitepsace! */
1614 if (fpin) /* We allocated this, remember? */
1617 /* Is this necessary? It makes the output kind of spacey. */
1619 fprintf(fpout, "\n");
1629 * support ANSI color if defined
1631 void color(int colornum)
1633 static int hold_color;
1634 static int current_color;
1636 if (colornum == COLOR_PUSH) {
1637 hold_color = current_color;
1641 if (colornum == COLOR_POP) {
1646 current_color = colornum;
1648 /* When switching to dim white, actually output an 'original
1649 * pair' sequence -- this looks better on black-on-white
1650 * terminals. - Changed to ORIGINAL_PAIR as this actually
1651 * wound up looking horrible on black-on-white terminals, not
1652 * to mention transparent terminals.
1654 if (colornum == ORIGINAL_PAIR)
1655 printf("\033[0;39;49m");
1657 printf("\033[%d;3%d;4%dm", (colornum & 8) ? 1 : 0, (colornum & 7), rc_color_use_bg);
1662 void cls(int colornum)
1665 printf("\033[4%dm\033[2J\033[H\033[0m", colornum ? colornum : rc_color_use_bg);
1671 * Detect whether ANSI color is available (answerback)
1673 void send_ansi_detect(void)
1675 if (rc_ansi_color == 2) {
1682 void look_for_ansi(void)
1690 if (rc_ansi_color == 0) {
1692 } else if (rc_ansi_color == 1) {
1694 } else if (rc_ansi_color == 2) {
1696 /* otherwise, do the auto-detect */
1701 if ((now - AnsiDetect) < 2)
1710 select(1, &rfds, NULL, NULL, &tv);
1711 if (FD_ISSET(0, &rfds)) {
1712 abuf[strlen(abuf) + 1] = 0;
1713 rv = read(0, &abuf[strlen(abuf)], 1);
1715 scr_printf("failed to read after select: %s", strerror(errno));
1719 } while (FD_ISSET(0, &rfds));
1721 for (a = 0; !IsEmptyStr(&abuf[a]); ++a) {
1722 if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1723 && (abuf[a + 2] == '?')) {
1732 * Display key options (highlight hotkeys inside angle brackets)
1734 void keyopt(char *buf)
1739 for (i = 0; !IsEmptyStr(&buf[i]); ++i) {
1740 if (buf[i] == '<') {
1741 scr_printf("%c", buf[i]);
1742 color(BRIGHT_MAGENTA);
1744 if (buf[i] == '>' && buf[i + 1] != '>') {
1747 scr_printf("%c", buf[i]);
1756 * Present a key-menu line choice type of thing
1758 char keymenu(char *menuprompt, char *menustring)
1765 int display_prompt = 1;
1767 choices = num_tokens(menustring, '|');
1769 if (menuprompt != NULL)
1771 if ((menuprompt != NULL) && (IsEmptyStr(menuprompt)))
1775 if (display_prompt) {
1777 scr_printf("%s ", menuprompt);
1779 for (i = 0; i < choices; ++i) {
1780 extract_token(buf, menustring, i, '|', sizeof buf);
1790 if ((do_prompt) && (ch == '?')) {
1791 scr_printf("\rOne of... ");
1793 for (i = 0; i < choices; ++i) {
1794 extract_token(buf, menustring, i, '|', sizeof buf);
1803 for (i = 0; i < choices; ++i) {
1804 extract_token(buf, menustring, i, '|', sizeof buf);
1805 for (c = 1; !IsEmptyStr(&buf[c]); ++c) {
1806 if ((ch == tolower(buf[c]))
1807 && (buf[c - 1] == '<')
1808 && (buf[c + 1] == '>')) {
1809 for (a = 0; !IsEmptyStr(&buf[a]); ++a) {
1810 if ((a != (c - 1)) && (a != (c + 1))) {