/* * vchat-client - alpha version * vchat-ui.c - user-interface and readline handling * * Copyright (C) 2001 Andreas Kotes * * This program is free software. It can be redistributed and/or modified, * provided that this copyright notice is kept intact. This program is * distributed in the hope that it will be useful, but without any warranty; * without even the implied warranty of merchantability or fitness for a * particular purpose. In no event shall the copyright holder be liable for * any direct, indirect, incidental or special damages arising in any way out * of the use of this software. * */ /* general includes */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vchat.h" #include "vchat-user.h" /* version of this module */ const char *vchat_ui_version = "vchat-ui.c $Id$"; /* externally used variables */ /* current string in topic window */ char topicstr[TOPICSTRSIZE] = "[] VChat 0.19"; /* current string in console window */ char consolestr[CONSOLESTRSIZE] = "[ Get help: .h for server /h for client commands"; static unsigned int ui_init = 0; /* our windows */ static WINDOW *console = NULL; static WINDOW *input = NULL; static WINDOW *topic = NULL; static WINDOW *channel = NULL; static WINDOW *private = NULL; static WINDOW *output = NULL; /* our screen dimensions */ static int screensx = 0; static int screensy = 0; /* current horizontal scrolling offset for input line */ static int scroff = 0; /* cache for stepping value of horizontal scrolling */ unsigned int hscroll = 0; static int outputshown = 0; static int outputwidth_desired = 0; static int privheight = 0; static int privheight_desired = 0; static int privwinhidden = 0; int usetime = 1; int outputcountdown = 0; char *querypartner = NULL; struct sb_entry { int id; time_t when; int stamp; char *what; struct sb_entry *link; }; struct sb_data { struct sb_entry *entries; struct sb_entry *last; int count; int scroll; }; static struct sb_data *sb_pub = NULL; static struct sb_data *sb_priv = NULL; static struct sb_data *sb_out = NULL; /* Tells, which window is active */ static int sb_win = 0; /* 0 for pub, 1 for priv */ /* struct to keep filter list */ struct filt { char colour; unsigned int id; char *text; regex_t regex; struct filt *next; }; typedef struct filt filt; static filt *filterlist = NULL; static int filtertype = 0; static int currentstamp = 0; /* Prototype declarations */ static void resize (int); static void forceredraw (void); static void forceredraw_wrapper (int a) {forceredraw();} static void drawwin (WINDOW *win, struct sb_data *sb); static int writescr (WINDOW *win, struct sb_entry *entry); static int testfilter ( struct sb_entry *entry); static int gettextwidth (const char *textbuffer); static void resize_output (void); static int getsbeheight (struct sb_entry *entry, const int xwidth, int needstime ); static int getsbdataheight (struct sb_data *data, const int xwidth, int needstime ); /* CURRENTLY UNUSED static void writecolorized (WINDOW *win, char *string); */ enum { RMFILTER_RMANDCONT, RMFILTER_RMANDSTOP, RMFILTER_KEEPANDCONT, RMFILTER_KEEPANDSTOP }; /* */ static void togglequery() { if( querypartner && private ) { { struct sb_data *tmp = sb_pub; sb_pub = sb_priv; sb_priv = tmp; } { WINDOW *tmp= private; private = channel; channel = tmp; } } } const char * skip_to_character( const char * string, size_t offset ) { size_t ch_size; mbstate_t mbs; memset(&mbs, 0, sizeof(mbs)); while( offset-- > 0 ) { switch( ch_size = mbrlen( string, MB_CUR_MAX, &mbs ) ) { case (size_t)-1: case (size_t)-2: return NULL; case 0: return string; default: string += ch_size; break; } } return string; } size_t offset_to_character( const char * string, size_t offset ) { mbstate_t mbs; memset(&mbs, 0, sizeof(mbs)); const char * string_offset = string + offset; size_t ch_size, nchars = 0; while( string < string_offset ) { switch( ch_size = mbrlen( string, MB_CUR_MAX, &mbs ) ) { case (size_t)-1: case (size_t)-2: return -1; case 0: return nchars; default: string += ch_size; } nchars++; } return nchars; } /* readlines callback when a line is completed */ static void linecomplete (char *line) { char *c; int i; /* send linefeed, return pointer, reset cursors */ waddch (input, '\n'); wmove (input, 0, 0); scroff = 0; if (line) { i = strlen(line) - 1; while (line[i] == ' ') line[i--]='\0'; if (line[0] && strchr(line,' ') == NULL && line[i] == ':') line[i--] = '\0'; /* empty line? nada. */ if (line[0]) { /* add line to history and have it handled in vchat-protocol.c */ add_history (line); handleline (line); } free (line); rl_reset_line_state(); rl_point = rl_end = rl_done = 0; /* If in query mode, feed query prefix */ if (( c = querypartner )) while( *c ) rl_stuff_char( *c++ ); /* wipe input line and reset cursor */ wrefresh (input); } } /* redraw-callback for readline */ static void vciredraw (void) { int i; size_t readline_point; /* readline offers us information we don't need so ignore outabound cursor positions */ if( rl_point < 0 ) rl_point = 0; //if( rl_point > rl_end ) rl_point = rl_end; readline_point = offset_to_character( rl_line_buffer, rl_point ); /* hscroll value cache set up? */ if (!hscroll) { /* check config-option or set hardcoded default */ hscroll = getintoption (CF_HSCROLL); if (!hscroll) hscroll = 15; } /* calculate horizontal scrolling offset */ /* Case 1: readline is left of current scroll offset: Adjust to left to reveal more text */ if( readline_point < scroff ) scroff = readline_point - hscroll; if( scroff < 1 ) scroff = 0; /* Case 2: readline just hit the last char on the line: Adjust to right to leave more space on screen */ if( readline_point >= scroff + getmaxx(input) - 1 ) scroff = readline_point - getmaxx(input) + hscroll; /* wipe input line */ wmove (input, 0, 0); for (i = 0; i < getmaxx(input) - 1; i++) waddch (input, ' '); /* show current line, move cursor, redraw! */ const char *start_line = skip_to_character( rl_line_buffer, scroff ); const char *end_line = skip_to_character( start_line, getmaxx(input) - 1 ); mvwaddnstr (input, 0, 0, start_line, end_line - start_line ); wmove (input, 0, readline_point - scroff ); wrefresh (input); } /* called by the eventloop in vchat-client.c */ void userinput (void) { /* let readline handle what the user typed .. */ rl_callback_read_char (); } static int calcdrawcus (char * const str) { char *tmp = str; int zero = 0; while( *tmp && (*tmp!=' ') && (*tmp!='\n')) { if(*tmp==1) zero+=2; tmp++; } return (tmp - str) - zero; } static void sb_flush ( struct sb_data *sb ) { struct sb_entry *now = sb->entries, *prev = NULL, *tmp; while( now ) { tmp = (struct sb_entry*)((unsigned long)prev ^ (unsigned long)now->link); free(now->what ); free(now); prev = now; now = tmp; } sb->entries = NULL; } /*static void sb_clear ( struct sb_data **sb ) { sb_flush(*sb); free( *sb ); *sb = NULL; }*/ static struct sb_entry* sb_add (struct sb_data *sb, const char *line, time_t when) { struct sb_entry *newone = malloc (sizeof(struct sb_entry)); if( newone ) { if( sb->count == sb->scroll ) sb->scroll++; newone->id = sb->count++; newone->when = when; newone->what = strdup(line); newone->link = sb->entries; newone->stamp= 0xffff; if( sb->entries ) sb->entries->link = (struct sb_entry*)((unsigned long)sb->entries->link ^ (unsigned long)newone); else sb->last = newone; sb->entries = newone; } return newone; } void flushout ( ) { sb_flush(sb_out); writeout(" "); outputwidth_desired = 0; outputshown = 0; } void hideout( ) { if( outputshown ) { outputshown = 0; resize(0); } } void showout (void) { writeout(" "); outputcountdown = 6; outputshown = 1; resize(0); } void writeout (const char *str) { int i; sb_add(sb_out,str,time(NULL)); i = 1 + gettextwidth( str ); if( i > outputwidth_desired ) outputwidth_desired = i; } int writechan (char *str) { struct sb_entry *tmp; int i = 0; time_t now = time(NULL); tmp = sb_add(sb_pub,str,now); if ( (sb_pub->scroll == sb_pub->count) && ((filtertype == 0) || ( testfilter(tmp)))) { i = writescr(channel, tmp); wnoutrefresh(channel); } if( querypartner && private ) topicline(NULL); else consoleline(NULL); return i; } int writecf (formtstr id, char *str) { struct sb_entry *tmp; int i = 0; time_t now = time(NULL); snprintf(tmpstr,TMPSTRSIZE,getformatstr(id),str); tmp = sb_add(sb_pub,tmpstr,now); if ( (sb_pub->scroll == sb_pub->count) && ((filtertype == 0) || ( testfilter(tmp)))) { i = writescr(channel, tmp); wnoutrefresh(channel); } if( querypartner && private ) topicline(NULL); else consoleline(NULL); return i; } int writepriv (char *str, int maybeep) { int i = 0; if (private) { time_t now = time (NULL); struct sb_entry *tmp; tmp = sb_add(sb_priv,str,now); if ( !privwinhidden && (sb_priv->scroll == sb_priv->count) && ((filtertype == 0) || ( testfilter(tmp)))) { i = writescr(private, tmp); } if( privwinhidden && !querypartner ) { if( (maybeep != 0) && (getintoption( CF_BELLPRIV ) != 0 )) putchar( 7 ); privheight_desired = privwinhidden; privwinhidden = 0; resize(0); } wnoutrefresh(private); if( querypartner && private ) consoleline(NULL); else topicline(NULL); } else i = writechan( str ); return i; } /* Get #if 's out of code */ #if NCURSES_VERSION_MAJOR >= 5 typedef struct { attr_t attr; short pair; } ncurs_attr; #define WATTR_GET( win, orgattr ) wattr_get( win, &orgattr.attr, &orgattr.pair, NULL) #define WATTR_SET( win, orgattr ) wattr_set( win, orgattr.attr, orgattr.pair, NULL) #define BCOLR_SET( attr, colour ) attr->pair = colour; #else typedef struct { attr_t attr; } ncurs_attr; #define WATTR_GET( win, orgattr ) orgattr.attr = wattr_get(win); #define WATTR_SET( win, orgattr ) wattr_set( win, orgattr.attr); #define BCOLR_SET( attr, colour ) attr->attr = ((attr->attr) & ~A_COLOR) | COLOR_PAIR((colour)); #endif /* 'A' - 'Z' attriute type */ static int attributes[] = { A_ALTCHARSET, A_BOLD, 0, A_DIM, 0, 0, 0, 0, A_INVIS, 0, 0, A_BLINK, 0, A_NORMAL, 0, A_PROTECT, 0, A_REVERSE, A_STANDOUT, 0, A_UNDERLINE, 0, 0, 1, 0, 0 }; static void docolorize (char colour, ncurs_attr *attr, ncurs_attr orgattr) { if( colour== '0') { *attr = orgattr; } else if( ( colour > '0') && ( colour <= '9')) { BCOLR_SET( attr, colour - '0' ); } else { char upc = colour & ( 0x20 ^ 0xff ); /* colour AND NOT 0x20 */ attr_t newattr; if( ( upc >= 'A') && ( upc<='Z' ) && ( newattr = attributes[upc - 'A']) ) attr->attr = ( colour & 0x20 ) ? attr->attr | newattr : attr->attr & ~newattr; } } /* draw arbitrary strings */ static int writescr ( WINDOW *win, struct sb_entry *entry ) { char tmp [64]; int charcount = 0; int i; int textlen = strlen( entry->what ); int timelen = ((win == channel)||(win == private)) && usetime ? (int)strftime(tmp,64,getformatstr(FS_TIME),localtime(&entry->when)) : 0; char textbuffer[ textlen+timelen+1 ]; ncurs_attr attrbuffer[ textlen+timelen+1 ]; ncurs_attr orgattr; /* illegal window? return */ if( !win || !(textlen+timelen)) return 0; /* store original attributes */ WATTR_GET( win, orgattr); attrbuffer[ 0 ] = orgattr; /* copy time string */ for( i = 0; i < timelen; i++ ) if( tmp[ i ] == 1 ) { docolorize( tmp[++i], attrbuffer+charcount, orgattr); } else { attrbuffer[ charcount+1 ] = attrbuffer[ charcount ]; textbuffer[ charcount++ ] = tmp[ i ]; } timelen = charcount; /* copy text */ for( i = 0; i< textlen; i++ ) if( entry->what[ i ] == 1 ) { docolorize( entry->what[++i], attrbuffer+charcount, orgattr); } else { attrbuffer[ charcount+1 ] = attrbuffer[ charcount ]; textbuffer[ charcount++ ] = entry->what[ i ]; } /* zero terminate text --- very important :) */ textbuffer[ charcount ] = 0; /* hilite */ if((win == channel)||(win == private)) { /* do not higlight bars */ filt *flt = filterlist; char *instr = textbuffer; regmatch_t match; int j; while( flt ) { if ( (flt->colour != '-') && (flt->colour != '+')) { i = timelen; while( i < charcount ) { if( regexec( &flt->regex, instr+i, 1, &match, 0 )) { i = charcount; } else { for( j = i + match.rm_so; j < i + match.rm_eo; j++) docolorize( flt->colour, attrbuffer+j, orgattr ); i += 1 + match.rm_so; } } } flt = flt->next; } } if (getcurx(win)) waddch(win,'\n'); for( i = 0; i < charcount; i++ ) { /* on start of line or attribute changes set new attribute */ if( !i || memcmp( attrbuffer+i, attrbuffer+i-1, sizeof(ncurs_attr))) WATTR_SET( win, attrbuffer[i]); if( textbuffer[ i ] == ' ') { if ((calcdrawcus(textbuffer+i+1) + getcurx(win) > getmaxx(win) - 1 - 1)&& (calcdrawcus(textbuffer+i+1) < getmaxx(win) - 1 )) { /* line wrap found */ WATTR_SET( win, orgattr); waddstr( win, "\n "); WATTR_SET( win, attrbuffer[ i ]); } } /* plot character */ waddch( win, (unsigned char)textbuffer[ i ]); } /* restore old attributes */ WATTR_SET (win, orgattr); return charcount; } static void resize_output ( ) { int outputwidth = (outputwidth_desired + 7 > screensx) ? screensx - 7 : outputwidth_desired; int outputheight = getsbdataheight(sb_out, outputwidth-1, 0); if (outputheight + 5 > screensy ) outputheight = screensy - 5; wresize(output,outputheight,outputwidth); mvwin(output,(screensy-outputheight)>>1,(screensx-outputwidth)>>1); drawwin(output, sb_out); } static void doscroll ( int up ) { togglequery(); { WINDOW *destwin = (sb_win && private) ? private : channel; struct sb_data *sb = (sb_win && private) ? sb_priv : sb_pub; struct sb_entry *now = sb->entries, *prev = NULL, *tmp; int lines = (getmaxy(destwin) - 1 ) >>1; if( sb->scroll != sb->count ) while( now && (now->id != sb->scroll) ) { tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } if( !up ) { prev = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } while( now && (lines > 0)) { if ( (!filtertype) || ( (now->stamp != currentstamp) && ( (now->stamp == (currentstamp | (1<<15))) || testfilter( now ) ) ) ) { lines -= getsbeheight( now, getmaxx(destwin) - 1, usetime ); } tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } if( now ) sb->scroll = now->id; else if( !up ) sb->scroll = sb->count; drawwin(destwin, sb); wnoutrefresh(destwin); togglequery(); if( private && (destwin == channel) ) consoleline( NULL); else topicline( NULL); } } void scrollup (void) { doscroll( 1 ); } void scrolldown (void) { doscroll( 0 ); } void scrollwin (void) { if (!sb_win && private && !privwinhidden) sb_win = 1; else sb_win = 0; topicline(NULL); consoleline(NULL); } void growprivwin (void) { if( private ) { if( privwinhidden) privwinhidden = 0; if( ++privheight_desired > screensy - 5) privheight_desired = screensy - 5; resize(0); } } void toggleprivwin (void) { if( outputshown ) { outputshown = 0; resize(0); } else { if( private ) { if( privwinhidden ) { privheight_desired = privwinhidden; privwinhidden = 0; } else { privwinhidden = privheight_desired; privheight_desired = 1; sb_win = 0; sb_priv->scroll = sb_priv->count; } resize(0); } } } void shrinkprivwin (void) { if( private && !privwinhidden ) { if( --privheight_desired < 1) privheight_desired = 1; if( privheight_desired > screensy - 5) privheight_desired = screensy - 5; resize(0); } } /* clear message window */ void clearpriv () { WINDOW *dest = NULL; /* do we have a private window? */ if (private && !privwinhidden ) dest = private; else dest = channel; /* clear window, move cursor to bottom, redraw */ wclear (dest); wmove (dest, getmaxy(dest) - 1, getmaxx(dest) - 1); wrefresh (dest); } /* clear channel window */ void clearchan () { /* clear window, move cursor to bottom, redraw */ wclear (channel); wmove (channel, getmaxy(channel) - 1, getmaxx(channel) - 1); wrefresh (channel); } /* Get window size */ void ttgtsz(int *x,int *y) { #ifdef TIOCGSIZE struct ttysize getit; #else #ifdef TIOCGWINSZ struct winsize getit; #endif #endif *x=0; *y=0; #ifdef TIOCGSIZE if(ioctl(1,TIOCGSIZE,&getit)!= -1) { *x=getit.ts_cols; *y=getit.ts_lines; } #else #ifdef TIOCGWINSZ if(ioctl(1,TIOCGWINSZ,&getit)!= -1) { *x=getit.ws_col; *y=getit.ws_row; } #endif #endif } static void forceredraw (void) { sb_pub->scroll = sb_pub->count; sb_priv->scroll = sb_priv->count; resize(0); if(console) wclear(console); if(topic) wclear(topic); if(private) wclear(private); if(channel) wclear(channel ); if(output) wclear(output); if(input) wclear(input); resize(0); } /* resize display on SIGWINCH Nowadays used as our main redraw trigger engine */ void resize (int signal) { int xsize,ysize,topicheight=topic?1:0; ttgtsz(&xsize,&ysize); resizeterm(ysize,xsize); /* store screen-dimensions to local functions */ getmaxyx (stdscr, screensy, screensx); /* desired height of PM window is user controllable, actual size depends on space available on screen */ if (!privheight_desired) privheight_desired = getintoption(CF_PRIVHEIGHT); /* Leave at least 5 lines for input, console and pubchannel */ if ( privheight_desired > screensy - 5) privheight = screensy - 5; else privheight = privheight_desired; /* check dimensions or bump user */ if (screensy - privheight < 4) { fprintf (stderr, "vchat-client: screen to short (only %d rows, at least %d expected), bailing out.\n", screensy, privheight + 6); snprintf (errstr, ERRSTRSIZE, "vchat-client: screen to short (only %d rows, at least %d expected), bailing out.\n", screensy, privheight + 6); cleanup (0); } if (screensx < 14) { fprintf (stderr, "vchat-client: screen to thin (only %d cols, at least %d expected), bailing out.\n", screensx, 14); snprintf (errstr, ERRSTRSIZE, "vchat-client: screen to thin (only %d cols, at least %d expected), bailing out.\n", screensx, 14); cleanup (0); } /***** * Arrange windows on screen *****/ togglequery(); /* console and input are always there and always 1 line tall */ wresize(console,1,screensx); wresize(input,1,screensx); /* If we got a private window and it is not hidden, set its size */ if (private && !privwinhidden) wresize(private,privheight,screensx); /* If oldschool vchat is not enabled, we have a topic line */ if( topic ) wresize(topic,1,screensx); /* public channel is always there and its height depends on: * existence and visibility of priv window * existence of a topic line (oldschool vchat style) */ wresize(channel, ( !private || privwinhidden ) ? screensy - ( topicheight + 2 ) : screensy - (privheight + ( topicheight + 2 )), screensx); /* Console and input alway take bottommost lines */ mvwin(console,screensy-2,0); mvwin(input,screensy-1,0); /* Private window always is top left */ if(private && !privwinhidden) mvwin(private,0,0); /* Topic window may not exist without priv window, so it is safe to assume sane values for privwinhidden and privheight */ if( topic ) mvwin(topic,privwinhidden ? 0 : privheight, 0); /* chan window starts below private window and topic line */ mvwin(channel, ( !private || privwinhidden ) ? topicheight : privheight + topicheight, 0); /******* * Now actual redraw starts, note, that we only fill * curses *WINDOW* buffers, changes reflect on screen * only, after they've been drawn to curses virtual * screen buffers by wnoutrefresh and this offscreen * buffer gets painted to terminal. This is triggered * by consoleline(), traditionally last window to be * drawn ******/ /* pub channel is always there, paint scrollback buffers */ drawwin(channel, sb_pub); /* if priv exists and is visible, paint scrollback buffers */ if(private && !privwinhidden ) drawwin(private, sb_priv); /* Send window's contents to curses virtual buffers */ wnoutrefresh(channel); if(private && !privwinhidden ) wnoutrefresh(private); togglequery(); /* Resize and draw our message window, render topic and console line */ if(outputshown) resize_output(); if(topic) topicline(NULL); consoleline(NULL); if(loggedin) vciredraw(); } static int gettextwidth (const char *textbuffer) { int width = 0; do switch( *(textbuffer++) ) { case 1: if (!*(textbuffer++)) return width; break; case 0: return width; break; default: width++; break; } while( 1 ); } static int getsbdataheight (struct sb_data *data, const int xwidth, int needstime ) { struct sb_entry *now = data->entries, *prev = NULL, *tmp; int height = 0; while( now ) { height += getsbeheight( now, xwidth, needstime); tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } return height; } static int getsbeheight (struct sb_entry *entry, const int xwidth, int needstime ) { int curx = 0, lines = 1; char tmp[ 64 ], *textbuffer; if( needstime ) { int timelen = (int)strftime(tmp,64,getformatstr(FS_TIME),localtime(&entry->when)); tmp[ timelen ] = 2; textbuffer=tmp; } else { textbuffer = entry->what; } do switch( *textbuffer++ ) { case ' ': if ((calcdrawcus(textbuffer) + curx > xwidth - 1) && (calcdrawcus(textbuffer) < xwidth)) { lines++; curx = 4; } else { if( curx++ == xwidth ) { curx = 0; lines++; } } break; case 1: if (!*textbuffer++) return lines; break; case 0: return lines; break; case 2: textbuffer=entry->what; break; default: if( curx++ == xwidth ) { curx = 0; lines++; } break; } while( 1 ); } /* Check, which kind of filter we have to apply: white or black listing. As white listing always superseeds black listing, a single white listing rule makes the whole filtering type 1. If no, or only colouring rules have been found, no line filtering applies. */ static int analyzefilters( void ) { filt *filters = filterlist; int type = 0; /* Analyzefilters is only being called after filter list has changed. This also reflects in resetting the scroll offset */ sb_pub->scroll = sb_pub->count; sb_priv->scroll = sb_priv->count; /* To avoid filtering the same line for identical filter sets, we keep a per line indicator, which ruleset we tested the line against. This Stamp is updated for each change to the filter list */ if( ++currentstamp == 0x3fff ) currentstamp = 1; while( (type!=1) && filters ) { if( filters->colour == '-' ) type = 2; if( filters->colour == '+' ) type = 1; filters=filters->next; } return type; } static int testfilter ( struct sb_entry* entry ) { int match = 0; filt *filters = filterlist; char filtercolour = filtertype == 2 ? '-' : '+'; while( !match && filters ) { if( filters->colour == filtercolour ) match = regexec( &filters->regex, entry->what, 0, NULL, 0 ) ? 0 : 1; filters=filters->next; } match = ( filtertype == 2 ) ? ( 1 - match ) : match; entry->stamp = (match << 15) | currentstamp; return match; } static void drawwin (WINDOW *win, struct sb_data *sb ) { if (win) { struct sb_entry *now = sb->entries, *prev = NULL, *tmp; struct sb_entry *vis[getmaxy(win)]; int sumlines = 0, sumbuffers = 0; /* public scrollback */ if( sb->scroll != sb->count ) while( now && (now->id != sb->scroll) ) { tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } if( (win == output) || (filtertype == 0)) { while( now && (sumlines <= getmaxy(win) - 1 )) { sumlines += getsbeheight( now, getmaxx(win) - 1, ((win == channel)||(win == private)) && usetime ); vis[ sumbuffers++ ] = now; tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } } else { while( now && (sumlines <= getmaxy(win) - 1 )) { /* If stamp matches exactly, line has been filtered out, since top bit off means hidden */ if( now->stamp != currentstamp) { /* If stamp matches and has top bit set, it has been identified positively. Else stamp does not match and line has to be tested against filters, which updates stamp. */ if( (now->stamp == (currentstamp | 0x8000) ) || testfilter( now )) { sumlines += getsbeheight( now, getmaxx(win) - 1, ((win == channel)||(win == private)) && usetime ); vis[ sumbuffers++ ] = now; } } tmp = now; now = (struct sb_entry*)((unsigned long)now->link ^ (unsigned long)prev); prev = tmp; } } /* If buffer is not completely filled, clear window */ if( sumlines < getmaxy(win) ) wclear(win); /* Move pointer to bottom to let curses scroll */ wmove(win, getmaxy(win) - 1, getmaxx(win) - 1); /* Plot visible lines */ while (sumbuffers--) writescr( win, vis[sumbuffers] ); } } /* initialize curses and display */ void initui (void) { Keymap keymap; /* init curses */ if (!ui_init) { initscr (); ui_init = 1; } /* install signalhandler */ signal(SIGWINCH, resize); signal(SIGCONT, forceredraw_wrapper); /* set options */ keypad (stdscr, TRUE); nonl (); cbreak (); /* color or monochome display? */ if (has_colors ()) { /* start color and set a colorset */ start_color (); use_default_colors(); init_pair (1, COLOR_RED, -1); init_pair (2, COLOR_GREEN, -1); init_pair (3, COLOR_YELLOW, -1); init_pair (4, COLOR_BLUE, -1); init_pair (5, COLOR_MAGENTA, -1); init_pair (6, COLOR_CYAN, -1); init_pair (7, COLOR_WHITE, -1); init_pair (8, COLOR_WHITE, COLOR_RED); init_pair (9, COLOR_WHITE, COLOR_BLUE); } else { /* monochrome, start color and set a colorset anyways */ start_color (); init_pair (1, -1, -1); init_pair (2, -1, -1); init_pair (3, -1, -1); init_pair (4, -1, -1); init_pair (5, -1, -1); init_pair (6, -1, -1); init_pair (7, -1, -1); init_pair (8, -1, -1); init_pair (9, -1, -1); } /* store screen-dimensions to local functions */ getmaxyx (stdscr, screensy, screensx); if (!privheight_desired) privheight_desired = getintoption(CF_PRIVHEIGHT); if ( privheight_desired > screensy - 5) privheight = screensy - 5; else privheight = privheight_desired; /* check dimensions or bump user */ if (screensy - privheight < 4) { fprintf (stderr, "vchat-client: screen to short (only %d rows, at least %d expected), bailing out.\n", screensy, privheight + 6); snprintf (errstr, ERRSTRSIZE, "vchat-client: screen to short (only %d rows, at least %d expected), bailing out.\n", screensy, privheight + 6); cleanup (0); } if (screensx < 14) { fprintf (stderr, "vchat-client: screen to thin (only %d cols, at least %d expected), bailing out.\n", screensx, 14); snprintf (errstr, ERRSTRSIZE, "vchat-client: screen to thin (only %d cols, at least %d expected), bailing out.\n", screensx, 14); cleanup (0); } /* setup our windows */ console = newwin (1, screensx, screensy - 2, 0); input = newwin (1, screensx, screensy - 1, 0); if (privheight) private = newwin (privheight, screensx, 0, 0); if( private || getintoption(CF_USETOPIC)) topic = newwin (1, screensx, privheight, 0); channel = newwin (screensy - (privheight+3), screensx, (privheight+1), 0); output = newwin (1, screensx, 1, 0); /* promblems opening windows? bye! */ if (!console || !input || (!topic && getintoption(CF_USETOPIC))|| !channel || !output || ( !private && privheight )) { fprintf (stderr, "vchat-client: could not open windows, bailing out.\n"); cleanup (0); } /* Prepare our scrollback buffers */ sb_pub = (struct sb_data*)malloc( sizeof(struct sb_data)); sb_out = (struct sb_data*)malloc( sizeof(struct sb_data)); if( privheight) sb_priv = (struct sb_data*)malloc( sizeof(struct sb_data)); else sb_priv = sb_pub; memset( sb_pub, 0, sizeof(struct sb_data)); memset( sb_priv, 0, sizeof(struct sb_data)); memset( sb_out, 0, sizeof(struct sb_data)); /* set colors for windows */ if (has_colors()) { wattrset (console, COLOR_PAIR (9)); wattrset (input, COLOR_PAIR (0)); wbkgd (output, COLOR_PAIR(8)); wbkgd (console, COLOR_PAIR (9)); wbkgd (channel, COLOR_PAIR (0)); wbkgd (input, COLOR_PAIR (0)); if (private) wbkgd (private, COLOR_PAIR (0)); if( topic ) { wattrset (topic, COLOR_PAIR (9)); wbkgd (topic, COLOR_PAIR (9)); } } else { wattron (console, A_REVERSE); wattron (output, A_REVERSE); wbkgd(output, A_REVERSE); if( topic ) wattron (topic, A_REVERSE); } /* set some options */ scrollok (channel, TRUE); if (private) scrollok (private, TRUE); scrollok (input, TRUE); scrollok (output, TRUE); //idlok(channel,TRUE); wtimeout (input, 100); /* setup readlines display */ /* FIXME: present only in newer readline versions rl_set_screen_size (1, screensx); */ /* use our callback to draw display */ rl_redisplay_function = vciredraw; /* get keymap, throw out unwanted binding */ keymap = rl_get_keymap (); rl_unbind_command_in_map ("clear-screen", keymap); rl_unbind_command_in_map ("complete", keymap); rl_unbind_command_in_map ("possible-completions", keymap); rl_unbind_command_in_map ("insert-completions", keymap); /* bind CTRL-L to clearmsg() */ rl_bind_key ('J'-'@', (rl_command_func_t *) clearpriv); rl_bind_key ('O'-'@', (rl_command_func_t *) clearchan); rl_bind_key ('L'-'@', (rl_command_func_t *) forceredraw); rl_bind_key ('B'-'@', (rl_command_func_t *) scrollup); rl_bind_key ('P'-'@', (rl_command_func_t *) scrollup); rl_bind_key ('F'-'@', (rl_command_func_t *) scrolldown); rl_bind_key ('N'-'@', (rl_command_func_t *) scrolldown); rl_bind_key ('R'-'@', (rl_command_func_t *) scrollwin); rl_bind_key ('T'-'@', (rl_command_func_t *) shrinkprivwin); rl_bind_key ('G'-'@', (rl_command_func_t *) growprivwin); rl_bind_key ('X'-'@', (rl_command_func_t *) toggleprivwin); rl_generic_bind (ISFUNC, "\\M-[5~", (void *)scrollup, keymap); rl_generic_bind (ISFUNC, "\\M-[6~", (void *)scrolldown, keymap); /* bind TAB to menu complete from readline */ rl_bind_key ('\t', (rl_command_func_t *) rl_menu_complete); /* application name for .inputrc - err, we don't load it */ rl_readline_name = "vchat-client"; /* set up nick completion functions .. */ rl_ignore_completion_duplicates = 0; rl_attempted_completion_function = (rl_completion_func_t *) ul_complete_user; /* .. and 'line completed' callback */ rl_callback_handler_install ("", (rl_vcpfunc_t *) linecomplete); if( getintoption(CF_PRIVCOLLAPS) ) toggleprivwin(); resize(0); } /* render consoleline to screen */ void consoleline (char *message) { /* clear console, set string (or default), redraw display */ int i; ncurs_attr old_att, new_att; togglequery(); memset( &new_att, 0, sizeof(new_att)); BCOLR_SET( (&new_att), 8 ); wmove (console, 0, 0); WATTR_GET( console, old_att); if(sb_pub->scroll!=sb_pub->count) WATTR_SET( console, new_att); for (i = 0; i < getmaxx(console) - 1; i++) waddch (console, ' '); if( !message && usetime ) { char date[10]; time_t now = time(NULL); strftime( date, sizeof(date), getformatstr(FS_CONSOLETIME), localtime(&now)); snprintf( tmpstr, TMPSTRSIZE, "%s%s", date, consolestr); mvwaddnstr (console, 0, 0, tmpstr, getmaxx(console) - 1); } else { mvwaddnstr (console, 0, 0, message ? message : consolestr, getmaxx(console) - 1); } snprintf(tmpstr,TMPSTRSIZE,getformatstr(FS_SBINF),sb_pub->scroll,sb_pub->count); mvwaddstr (console, 0, getmaxx(console) - 1 - (strlen(tmpstr)-1),tmpstr); if (sb_win == 0) mvwaddch (console, 0, getmaxx(console) - 1,'*'); WATTR_SET( console, old_att); wnoutrefresh(console); if(outputshown) { redrawwin(output); wnoutrefresh(output); } togglequery(); wnoutrefresh(input); doupdate(); } /* render topicline to screen */ void topicline (char *message) { int i; ncurs_attr old_att, new_att; if( !topic ) return; togglequery(); memset( &new_att, 0, sizeof(new_att)); BCOLR_SET( (&new_att), 8 ); /* clear topic, set string (or default), redraw display */ wmove (topic, 0, 0); WATTR_GET( topic, old_att); if( private && (sb_priv->scroll!=sb_priv->count)) WATTR_SET( topic, new_att); for (i = 0; i < getmaxx(topic) - 1; i++) waddch (topic, ' '); mvwaddnstr (topic, 0, 0, message ? message : topicstr, getmaxx(topic) - 1); if (private) { snprintf(tmpstr,TMPSTRSIZE,getformatstr(FS_SBINF),sb_priv->scroll,sb_priv->count); mvwaddstr (topic, 0, getmaxx(topic) - 1 - (strlen(tmpstr)-1),tmpstr); if (sb_win == 1) mvwaddch (topic, 0, getmaxx(topic) - 1,'*'); } WATTR_SET( topic, old_att); wnoutrefresh(topic); if(outputshown) { redrawwin(output); wnoutrefresh(output); } togglequery(); wnoutrefresh(input); doupdate(); } /* end userinterface */ void exitui (void) { if (ui_init) { rl_callback_handler_remove (); endwin (); ui_init = 0; } } /* prompt for a nick */ /* FIXME: must not be called when used rl_callback_read_char()/userinput() * before */ void nickprompt (void) { char * newnick = 0; if (own_nick_get()) return; /* prompt user for nick unless he enters one */ consoleline("Please enter your nickname:"); while (!newnick) newnick = readline(""); own_nick_set(newnick); setstroption(CF_NICK,newnick); /* try to get readlines stats clean again */ //rl_free_line_state (); memset( rl_line_buffer, 0, rl_end ); rl_point = rl_end = rl_done = 0; /* wipe input line and reset cursor */ rl_kill_full_line(0,0); wclear(input); /* reset consoleline */ consoleline(NULL); } /* special callback for readline, doesn't show the characters */ static void vcnredraw (void) { int i; char *passbof="-*-*-*-*-*-*-"; /* wipe input line and reset cursor */ wmove(input, 0, 0); for (i = 0; i < getmaxx(input) - 1; i++) waddch(input, ' '); wmove(input, 0, 0); /* draw as many stars as there are characters */ mvwaddnstr(input, 0, 0, &passbof[rl_point%2], 12); wmove(input, 0, getmaxx(input) - 1); wrefresh(input); } /* passphrase callback for OpenSSL */ /* FIXME: must not be called when used rl_callback_read_char()/userinput() * before */ int passprompt (char *buf, int size, int rwflag, void *userdata) { int i; char *passphrase = NULL; /* use special non-revealing redraw function */ /* FIXME: passphrase isn't protected against e.g. swapping */ rl_redisplay_function = vcnredraw; /* prompt user for non-empty passphrase */ consoleline("Please enter PEM passphrase for private key:"); while (!passphrase || !passphrase[0]) { if (passphrase) free (passphrase); passphrase = readline (""); } /* reset redrawing function to default, reset consoleline */ rl_redisplay_function = vciredraw; consoleline(NULL); /* copy passphrase to buffer */ strncpy (buf, passphrase, size); /* try to get readlines stats clean again */ //rl_free_line_state (); memset( rl_line_buffer, 0, rl_end ); rl_point = rl_end = rl_done = 0; /* wipe input line and reset cursor */ wmove (input, 0, 0); for (i = 0; i < getmaxx(input) - 1; i++) waddch (input, ' '); wmove (input, 0, 0); wrefresh (input); /* return passphrase to OpenSSL */ return strlen (buf); } /* Filter stuff */ static int check_valid_colour( char colour ) { return !( (colour !='-')&&(colour !='+') && (colour < '0' || colour > '9') && (colour < 'A' || colour > 'Z' || !attributes[ colour-'A' ]) && (colour < 'a' || colour > 'z' || !attributes[ colour-'a' ])); } /* scans filterlist and removes possible matches test functions may return: RMFILTER_RMANDCONT RMFILTER_RMANDSTOP RMFILTER_KEEPANDCONT RMFILTER_KEEPANDSTOP returns number of removed entries */ static int removefromfilterlist( int(*test)(filt *flt, void *data, char colour), void *data, char colour) { filt **flt = &filterlist, *tmp; int removed = 0, stop = 0; while( *flt && !stop ) { switch( test( *flt, data, colour ) ) { case RMFILTER_RMANDSTOP: /* remove */ stop = 1; case RMFILTER_RMANDCONT: snprintf( tmpstr, TMPSTRSIZE, " Removed ID: [% 3d] Color: [%c] Regex: [%s] ", (*flt)->id, (*flt)->colour, (*flt)->text); writeout(tmpstr); /* Release regex.h resources */ regfree( &((*flt)->regex)); /* free ASCII text memory */ free( (*flt)->text); /* unlink from list */ tmp = *flt; *flt = (*flt)->next; /* free filter block itself */ free( tmp ); /* reflect changes on whole screen */ removed++; break; case RMFILTER_KEEPANDSTOP: /* don't remove but stop scanning */ stop = 1; break; default: /* advance in list */ if( *flt ) flt = &((*flt)->next); break; } } /* return number of removed items */ return removed; } static int test_clear( filt *flt, void *data, char c ) { if( !c || ( c == flt->colour ) || ( (c == '*') && (flt->colour != '-') && (flt->colour != '+') ) ) return RMFILTER_RMANDCONT; else return RMFILTER_KEEPANDCONT; } static int test_simplerm( filt *flt, void *data, char colour) { if( !strcmp( flt->text, (char*)data)) return test_clear(flt, NULL, colour); else return RMFILTER_KEEPANDCONT; } static int test_numericrm( filt *flt, void *data, char colour) { if( flt->id == (long)data) return test_clear(flt, NULL, colour); else return RMFILTER_KEEPANDCONT; } /* clears filter list */ void clearfilters( char colour ) { flushout( ); if( removefromfilterlist( test_clear, NULL, colour ) ) { /* There actually WERE items removed */ filtertype = analyzefilters( ); } else { writeout(" No matches on filter list. "); } showout(); } /* removes filter pattern */ void removefilter( char *tail ) { int rmv = 0, val; char* end; flushout( ); rmv = removefromfilterlist( test_simplerm, (void *)tail, 0 ); if(!rmv) { val = strtol(tail, &end, 10); if( (tail != end) && (!*end) ) rmv = removefromfilterlist( test_numericrm, (void *)(uintptr_t)val, 0); } if( rmv ) { /* There actually WERE items removed */ filtertype = analyzefilters( ); } else { snprintf( tmpstr, TMPSTRSIZE, " Not on filter list: %s ", tail); writeout( tmpstr ); } showout(); } static unsigned int uniqueidpool = 1; /* returns unique id for filter pattern or 0 for failure */ unsigned int addfilter( char colour, char *regex ) { filt *newflt = malloc( sizeof(filt)), **flt = &filterlist; if( !newflt ) return 0; flushout( ); /* check colour validity */ if( !check_valid_colour( colour ) ){ free( newflt ); writeout( " Not a valid colour code. " ); showout( ); return 0; } if( regcomp( &newflt->regex, regex, REG_ICASE | REG_EXTENDED | REG_NEWLINE) ) { /* couldn't compile regex ... print error, return */ free( newflt ); snprintf( tmpstr, TMPSTRSIZE, " %s ", regex); writeout( " Bad regular expression: "); writeout( tmpstr ); showout( ); return 0; } else { int len = strlen(regex) + 1; /* grab id from ID pool an increase free ID counter */ newflt->id = uniqueidpool++; newflt->colour = colour; newflt->next = NULL; /* take a copy of plain regex text for later identification by user */ newflt->text = malloc( len ); memcpy( newflt->text, regex, len ); } /* append new filter to filterlist */ while( *flt ) flt=&((*flt)->next); *flt = newflt; filtertype = analyzefilters( ); if ( colour == '-' ) { snprintf( tmpstr, TMPSTRSIZE, " \"%s\" successfully added to ignorance list. ( ID = %d). ", (*flt)->text, (*flt)->id); } else if( colour == '+' ) { snprintf( tmpstr, TMPSTRSIZE, " \"%s\" successfully added to zoom list. ( ID = %d). ", (*flt)->text, (*flt)->id); } else { snprintf( tmpstr, TMPSTRSIZE, " \"%s\" successfully added to hilitelist. (ID = %d). ", (*flt)->text, (*flt)->id); } writeout(tmpstr ); showout( ); return newflt->id; } void listfilters( void ) { filt *flt = filterlist; int shownhi = 0, shownign = 0, shownzoom = 0; flushout( ); while( flt ) { if( (flt->colour != '-') && (flt->colour != '+')) { if(!shownhi) { writeout(" Your hilites:"); shownhi = 1; } snprintf( tmpstr, TMPSTRSIZE, " ID: [% 3d] Color: [%c] Regex: [%s]", flt->id, flt->colour, flt->text); writeout( tmpstr ); } flt = flt->next; } flt = filterlist; while( flt ) { if( flt->colour == '-') { if(!shownign) { if(shownhi) writeout(" "); writeout(" You do ignore:"); shownign = 1; } snprintf( tmpstr, TMPSTRSIZE, " ID: [% 3d] Regex: [%s]", flt->id, flt->text); writeout( tmpstr ); } flt = flt->next; } flt = filterlist; while( flt ) { if( flt->colour == '+') { if(!shownzoom) { if(shownhi || shownign) writeout(" "); writeout(" On your whitelist:"); shownzoom = 1; } snprintf( tmpstr, TMPSTRSIZE, " ID: [% 3d] Regex: [%s]", flt->id, flt->text); writeout( tmpstr ); } flt = flt->next; } if( !shownign && !shownhi && !shownzoom) { writeout(" No entries on your filter list. "); } showout(); } void handlequery( char *tail ) { if( *tail ) { // ".m %s " -> string + 4 if( querypartner && private ) { WINDOW *tmp= private; private = channel; channel = tmp; } querypartner = (char *)realloc( querypartner, 5 + strlen( tail )); if( querypartner ) { snprintf( querypartner, 5 + strlen( tail ), ".m %s ", tail ); if( private ) { WINDOW *tmp= private; private = channel; channel = tmp; } } resize( 0 ); } else { // QUERY ends if( querypartner ) { free( querypartner ); querypartner = NULL; if( private ) { WINDOW *tmp= private; private = channel; channel = tmp; } resize( 0 ); } } }