X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=textclient%2Fsrc%2Fcommands.c;fp=textclient%2Fsrc%2Fcommands.c;h=426849a95f3091f61eaaa7c2994163b2819d3287;hb=5a202656af01ddc9db0640e4cc7a84f5974bc2d4;hp=0000000000000000000000000000000000000000;hpb=0bfb63b329df2e5408213edb383ece0a7775245d;p=citadel.git diff --git a/textclient/src/commands.c b/textclient/src/commands.c new file mode 100644 index 000000000..426849a95 --- /dev/null +++ b/textclient/src/commands.c @@ -0,0 +1,1555 @@ +/* + * This file contains functions which implement parts of the + * text-mode user interface. + * + * Copyright (c) 1987-2012 by the citadel.org team + * + * This program is open source software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3. + * + * 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. See the + * GNU General Public License for more details. + */ + +#include "sysdep.h" +#include +#include +#include +#include +#include +#include +#include + +#if TIME_WITH_SYS_TIME +# include +# include +#else +# if HAVE_SYS_TIME_H +# include +# else +# include +# endif +#endif + +#ifdef HAVE_TERMIOS_H +#include +#else +#include +#endif + +#ifdef HAVE_SYS_SELECT_H +#include +#endif + +#ifdef THREADED_CLIENT +#include +#endif + +#include +#include +#include +#include +#include "citadel.h" +#include "citadel_ipc.h" +#include "commands.h" +#include "messages.h" +#include "citadel_decls.h" +#include "routines.h" +#include "routines2.h" +#include "rooms.h" +#include "client_chat.h" +#include "citadel_dirs.h" +#include "tuiconfig.h" +#ifndef HAVE_SNPRINTF +#include "snprintf.h" +#endif +#include "screen.h" +#include "ecrash.h" + +struct citcmd { + struct citcmd *next; + int c_cmdnum; + int c_axlevel; + char c_keys[5][64]; +}; + +#define IFNEXPERT if ((userflags&US_EXPERT)==0) + + +int rc_exp_beep; +char rc_exp_cmd[1024]; +int rc_allow_attachments; +int rc_display_message_numbers; +int rc_force_mail_prompts; +int rc_remember_passwords; +int rc_ansi_color; +int rc_color_use_bg; +int rc_prompt_control = 0; +time_t rc_idle_threshold = (time_t)900; +char rc_url_cmd[SIZ]; +char rc_open_cmd[SIZ]; +char rc_gotmail_cmd[SIZ]; + +int next_lazy_cmd = 5; + +extern int screenwidth, screenheight; +extern int termn8; +extern CtdlIPC *ipc_for_signal_handlers; /* KLUDGE cover your eyes */ + +struct citcmd *cmdlist = NULL; + + +/* these variables are local to this module */ +char keepalives_enabled = KA_YES; /* send NOOPs to server when idle */ +int ok_to_interrupt = 0; /* print instant msgs asynchronously */ +time_t AnsiDetect; /* when did we send the detect code? */ +int enable_color = 0; /* nonzero for ANSI color */ + + + + +/* + * If an interesting key has been pressed, return its value, otherwise 0 + */ +char was_a_key_pressed(void) { + fd_set rfds; + struct timeval tv; + int the_character; + int retval; + + FD_ZERO(&rfds); + FD_SET(0, &rfds); + tv.tv_sec = 0; + tv.tv_usec = 0; + retval = select(1, &rfds, NULL, NULL, &tv); + + /* Careful! Disable keepalives during keyboard polling; we're probably + * in the middle of a data transfer from the server, in which case + * sending a NOOP would throw the client protocol out of sync. + */ + if ((retval > 0) && FD_ISSET(0, &rfds)) { + set_keepalives(KA_NO); + the_character = inkey(); + set_keepalives(KA_YES); + } + else { + the_character = 0; + } + return(the_character); +} + + + + + +/* + * print_instant() - print instant messages if there are any + */ +void print_instant(void) +{ + char buf[1024]; + FILE *outpipe; + time_t timestamp; + struct tm stamp; + int flags = 0; + char sender[64]; + char node[64]; + char *listing = NULL; + int r; /* IPC result code */ + + if (instant_msgs == 0) + return; + + if (rc_exp_beep) { + ctdl_beep(); + } + if (IsEmptyStr(rc_exp_cmd)) { + color(BRIGHT_RED); + scr_printf("\r---"); + } + + while (instant_msgs != 0) { + r = CtdlIPCGetInstantMessage(ipc_for_signal_handlers, &listing, buf); + if (r / 100 != 1) + return; + + instant_msgs = extract_int(buf, 0); + timestamp = extract_long(buf, 1); + flags = extract_int(buf, 2); + extract_token(sender, buf, 3, '|', sizeof sender); + extract_token(node, buf, 4, '|', sizeof node); + strcpy(last_paged, sender); + + localtime_r(×tamp, &stamp); + + /* If the page is a Logoff Request, honor it. */ + if (flags & 2) { + termn8 = 1; + return; + } + + if (!IsEmptyStr(rc_exp_cmd)) { + outpipe = popen(rc_exp_cmd, "w"); + if (outpipe != NULL) { + /* Header derived from flags */ + if (flags & 2) + fprintf(outpipe, + "Please log off now, as requested "); + else if (flags & 1) + fprintf(outpipe, "Broadcast message "); + else if (flags & 4) + fprintf(outpipe, "Chat request "); + else + fprintf(outpipe, "Message "); + /* Timestamp. Can this be improved? */ + if (stamp.tm_hour == 0 || stamp.tm_hour == 12) + fprintf(outpipe, "at 12:%02d%cm", + stamp.tm_min, + stamp.tm_hour ? 'p' : 'a'); + else if (stamp.tm_hour > 12) /* pm */ + fprintf(outpipe, "at %d:%02dpm", + stamp.tm_hour - 12, + stamp.tm_min); + else /* am */ + fprintf(outpipe, "at %d:%02dam", + stamp.tm_hour, stamp.tm_min); + fprintf(outpipe, " from %s", sender); + if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32)) + fprintf(outpipe, " @%s", node); + fprintf(outpipe, ":\n%s\n", listing); + pclose(outpipe); + if (instant_msgs == 0) + return; + continue; + } + } + /* fall back to built-in instant message display */ + scr_printf("\n"); + + /* Header derived from flags */ + if (flags & 2) + scr_printf("Please log off now, as requested "); + else if (flags & 1) + scr_printf("Broadcast message "); + else if (flags & 4) + scr_printf("Chat request "); + else + scr_printf("Message "); + + /* Timestamp. Can this be improved? */ + if (stamp.tm_hour == 0 || stamp.tm_hour == 12)/* 12am/12pm */ + scr_printf("at 12:%02d%cm", stamp.tm_min, + stamp.tm_hour ? 'p' : 'a'); + else if (stamp.tm_hour > 12) /* pm */ + scr_printf("at %d:%02dpm", + stamp.tm_hour - 12, stamp.tm_min); + else /* am */ + scr_printf("at %d:%02dam", stamp.tm_hour, stamp.tm_min); + + /* Sender */ + scr_printf(" from %s", sender); + + /* Remote node, if any */ + if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32)) + scr_printf(" @%s", node); + + scr_printf(":\n"); + fmout(screenwidth, NULL, listing, NULL, 0); + free(listing); + + } + scr_printf("\n---\n"); + color(BRIGHT_WHITE); + + +} + + +void set_keepalives(int s) +{ + keepalives_enabled = (char) s; +} + +/* + * This loop handles the "keepalive" messages sent to the server when idling. + */ + +static time_t idlet = 0; +static void really_do_keepalive(void) { + + time(&idlet); + + /* This may sometimes get called before we are actually connected + * to the server. Don't do anything if we aren't connected. -IO + */ + if (!ipc_for_signal_handlers) + return; + + /* If full keepalives are enabled, send a NOOP to the server and + * wait for a response. + */ + if (keepalives_enabled == KA_YES) { + CtdlIPCNoop(ipc_for_signal_handlers); + if (instant_msgs > 0) { + if (ok_to_interrupt == 1) { + scr_printf("\r%64s\r", ""); + print_instant(); + scr_printf("%s%c ", room_name, + room_prompt(room_flags)); + scr_flush(); + } + } + } + + /* If half keepalives are enabled, send a QNOP to the server (if the + * server supports it) and then do nothing. + */ + if ( (keepalives_enabled == KA_HALF) + && (ipc_for_signal_handlers->ServInfo.supports_qnop > 0) ) { + CtdlIPC_chat_send(ipc_for_signal_handlers, "QNOP"); + } +} + +/* threaded nonblocking keepalive stuff starts here. I'm going for a simple + encapsulated interface; in theory there should be no need to touch these + globals outside of the async_ka_* functions. */ + +#ifdef THREADED_CLIENT +static pthread_t ka_thr_handle; +static int ka_thr_active = 0; +static int async_ka_enabled = 0; + +static void *ka_thread(void *arg) +{ +#ifdef HAVE_BACKTRACE + char threadName[256]; + + // Set up our name + sprintf(threadName, "ka_Thread n"); + + // Register for tracing + eCrash_RegisterThread(threadName, 0); +#endif + really_do_keepalive(); + pthread_detach(ka_thr_handle); + ka_thr_active = 0; + +#ifdef HAVE_BACKTRACE + eCrash_UnregisterThread(); +#endif + return NULL; +} + +/* start up a thread to handle a keepalive in the background */ +static void async_ka_exec(void) +{ + if (!ka_thr_active) { + ka_thr_active = 1; + if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) { + perror("pthread_create"); + exit(1); + } + } +} +#endif /* THREADED_CLIENT */ + +/* I changed this from static to not because I need to call it from + screen.c, either that or make something in screen.c not static. + Fix it how you like. Why all the staticness? stu */ + +void do_keepalive(void) +{ + time_t now; + + time(&now); + if ((now - idlet) < ((long) S_KEEPALIVE)) + return; + + /* Do a space-backspace to keep telnet sessions from idling out */ + scr_printf(" %c", 8); + scr_flush(); + +#ifdef THREADED_CLIENT + if (async_ka_enabled) + async_ka_exec(); + else +#endif + really_do_keepalive(); +} + + +/* Now the actual async-keepalve API that we expose to higher levels: + async_ka_start() and async_ka_end(). These do nothing when we don't have + threading enabled, so we avoid sprinkling ifdef's throughout the code. */ + +/* wait for a background keepalive to complete. this must be done before + attempting any further server requests! */ +void async_ka_end(void) +{ +#ifdef THREADED_CLIENT + if (ka_thr_active) + pthread_join(ka_thr_handle, NULL); + + async_ka_enabled--; +#endif +} + +/* tell do_keepalive() that keepalives are asynchronous. */ +void async_ka_start(void) +{ +#ifdef THREADED_CLIENT + async_ka_enabled++; +#endif +} + + +int inkey(void) +{ /* get a character from the keyboard, with */ + int a; /* the watchdog timer in effect if necessary */ + fd_set rfds; + struct timeval tv; + time_t start_time; + + scr_flush(); + time(&start_time); + + do { + /* This loop waits for keyboard input. If the keepalive + * timer expires, it sends a keepalive to the server if + * necessary and then waits again. + */ + do { + do_keepalive(); + + FD_ZERO(&rfds); + FD_SET(0, &rfds); + tv.tv_sec = S_KEEPALIVE; + tv.tv_usec = 0; + + select(1, &rfds, NULL, NULL, &tv); + } while (!FD_ISSET(0, &rfds)); + + /* At this point, there's input, so fetch it. + * (There's a hole in the bucket...) + */ + a = scr_getc(SCR_BLOCK); + if (a == 127) { + a = 8; + } + if (a == 13) { + a = 10; + } + } while (a == 0); + return (a); +} + + +int yesno(void) +{ /* Returns 1 for yes, 0 for no */ + int a; + while (1) { + a = inkey(); + a = tolower(a); + if (a == 'y') { + scr_printf("Yes\n"); + return (1); + } + if (a == 'n') { + scr_printf("No\n"); + return (0); + } + } +} + +/* Returns 1 for yes, 0 for no, arg is default value */ +int yesno_d(int d) +{ + int a; + while (1) { + a = inkey(); + a = tolower(a); + if (a == 10) + a = (d ? 'y' : 'n'); + if (a == 'y') { + scr_printf("Yes\n"); + return (1); + } + if (a == 'n') { + scr_printf("No\n"); + return (0); + } + } +} + + + + +/* + * Function to read a line of text from the terminal. + * + * string Pointer to string buffer + * lim Maximum length + * noshow Echo asterisks instead of keystrokes? + * bs Allow backspacing out of the prompt? (returns -1 if this happens) + * + * returns: string length + */ +int ctdl_getline(char *string, int lim, int noshow, int bs) +{ + int pos = strlen(string); + int ch; + + async_ka_start(); + if (noshow && !IsEmptyStr(string)) { + int num_stars = strlen(string); + while (num_stars--) { + scr_putc('*'); + } + } + else { + scr_printf("%s", string); + } + + while(1) { + ch = inkey(); + + if ((ch == 8) && (pos > 0)) { /* backspace */ + --pos; + scr_putc(8); scr_putc(32); scr_putc(8); + } + + else if ((ch == 8) && (pos == 0) && (bs)) { /* backspace out of the prompt */ + async_ka_end(); + return(-1); + } + + else if ((ch == 23) && (pos > 0)) { /* Ctrl-W deletes a word */ + while ((pos > 0) && !isspace(string[pos])) { + --pos; + scr_putc(8); scr_putc(32); scr_putc(8); + } + while ((pos > 0) && !isspace(string[pos-1])) { + --pos; + scr_putc(8); scr_putc(32); scr_putc(8); + } + } + + else if (ch == 10) { /* return */ + string[pos] = 0; + scr_printf("\n"); + async_ka_end(); + return(pos); + } + + else if (isprint(ch)) { /* payload characters */ + scr_putc((noshow ? '*' : ch)); + string[pos] = ch; + ++pos; + } + } +} + + +/* + * newprompt() prompt for a string, print the existing value, and + * allow the user to press return to keep it... + * If len is negative, pass the "noshow" flag to ctdl_getline() + */ +void strprompt(char *prompt, char *str, int len) +{ + print_instant(); + color(DIM_WHITE); + scr_printf("%s", prompt); + color(DIM_WHITE); + scr_printf(": "); + color(BRIGHT_CYAN); + ctdl_getline(str, abs(len), (len<0), 0); + color(DIM_WHITE); +} + +/* + * boolprompt() - prompt for a yes/no, print the existing value and + * allow the user to press return to keep it... + */ +int boolprompt(char *prompt, int prev_val) +{ + int r; + + color(DIM_WHITE); + scr_printf("%s ", prompt); + color(DIM_MAGENTA); + scr_printf("["); + color(BRIGHT_MAGENTA); + scr_printf("%s", (prev_val ? "Yes" : "No")); + color(DIM_MAGENTA); + scr_printf("]: "); + color(BRIGHT_CYAN); + r = (yesno_d(prev_val)); + color(DIM_WHITE); + return r; +} + +/* + * intprompt() - like strprompt(), except for an integer + * (note that it RETURNS the new value!) + */ +int intprompt(char *prompt, int ival, int imin, int imax) +{ + char buf[16]; + int i; + int p; + + do { + i = ival; + snprintf(buf, sizeof buf, "%d", i); + strprompt(prompt, buf, 15); + i = atoi(buf); + for (p=0; !IsEmptyStr(&buf[p]); ++p) { + if ( (!isdigit(buf[p])) + && ( (buf[p]!='-') || (p!=0) ) ) + i = imin - 1; + } + if (i < imin) + scr_printf("*** Must be no less than %d.\n", imin); + if (i > imax) + scr_printf("*** Must be no more than %d.\n", imax); + } while ((i < imin) || (i > imax)); + return (i); +} + +/* + * newprompt() prompt for a string with no existing value + * (clears out string buffer first) + * If len is negative, pass the "noshow" flag to ctdl_getline() + */ +void newprompt(char *prompt, char *str, int len) +{ + str[0] = 0; + color(BRIGHT_MAGENTA); + scr_printf("%s", prompt); + color(DIM_MAGENTA); + ctdl_getline(str, abs(len), (len<0), 0); + color(DIM_WHITE); +} + + +int lkey(void) +{ /* returns a lower case value */ + int a; + a = inkey(); + if (isupper(a)) + a = tolower(a); + return (a); +} + +/* + * parse the citadel.rc file + */ +void load_command_set(void) +{ + FILE *ccfile; + char buf[1024]; + struct citcmd *cptr; + struct citcmd *lastcmd = NULL; + int a, d; + int b = 0; + + /* first, set up some defaults for non-required variables */ + + strcpy(editor_path, ""); + strcpy(printcmd, ""); + strcpy(imagecmd, ""); + strcpy(rc_username, ""); + strcpy(rc_password, ""); + rc_floor_mode = 0; + rc_exp_beep = 1; + rc_allow_attachments = 0; + rc_remember_passwords = 0; + strcpy(rc_exp_cmd, ""); + rc_display_message_numbers = 0; + rc_force_mail_prompts = 0; + rc_ansi_color = 0; + rc_color_use_bg = 0; + strcpy(rc_url_cmd, ""); + strcpy(rc_open_cmd, ""); + strcpy(rc_gotmail_cmd, ""); +#ifdef HAVE_OPENSSL + rc_encrypt = RC_DEFAULT; +#endif + + /* now try to open the citadel.rc file */ + + ccfile = NULL; + if (getenv("HOME") != NULL) { + snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME")); + ccfile = fopen(buf, "r"); + } + if (ccfile == NULL) { + ccfile = fopen(file_citadel_rc, "r"); + } + if (ccfile == NULL) { + ccfile = fopen("/etc/citadel.rc", "r"); + } + if (ccfile == NULL) { + ccfile = fopen("./citadel.rc", "r"); + } + if (ccfile == NULL) { + perror("commands: cannot open citadel.rc"); + logoff(NULL, 3); + } + while (fgets(buf, sizeof buf, ccfile) != NULL) { + while ((!IsEmptyStr(buf)) ? (isspace(buf[strlen(buf) - 1])) : 0) + buf[strlen(buf) - 1] = 0; + + if (!strncasecmp(buf, "encrypt=", 8)) { + if (!strcasecmp(&buf[8], "yes")) { +#ifdef HAVE_OPENSSL + rc_encrypt = RC_YES; +#else + fprintf(stderr, "citadel.rc requires encryption support but citadel is not compiled with OpenSSL"); + logoff(NULL, 3); +#endif + } +#ifdef HAVE_OPENSSL + else if (!strcasecmp(&buf[8], "no")) { + rc_encrypt = RC_NO; + } + else if (!strcasecmp(&buf[8], "default")) { + rc_encrypt = RC_DEFAULT; + } +#endif + } + + if (!strncasecmp(buf, "editor=", 7)) { + strcpy(editor_path, &buf[7]); + } + + if (!strncasecmp(buf, "printcmd=", 9)) + strcpy(printcmd, &buf[9]); + + if (!strncasecmp(buf, "imagecmd=", 9)) + strcpy(imagecmd, &buf[9]); + + if (!strncasecmp(buf, "expcmd=", 7)) + strcpy(rc_exp_cmd, &buf[7]); + + if (!strncasecmp(buf, "use_floors=", 11)) { + if (!strcasecmp(&buf[11], "yes")) + rc_floor_mode = RC_YES; + if (!strcasecmp(&buf[11], "no")) + rc_floor_mode = RC_NO; + if (!strcasecmp(&buf[11], "default")) + rc_floor_mode = RC_DEFAULT; + } + if (!strncasecmp(buf, "beep=", 5)) { + rc_exp_beep = atoi(&buf[5]); + } + if (!strncasecmp(buf, "allow_attachments=", 18)) { + rc_allow_attachments = atoi(&buf[18]); + } + if (!strncasecmp(buf, "idle_threshold=", 15)) { + rc_idle_threshold = atol(&buf[15]); + } + if (!strncasecmp(buf, "remember_passwords=", 19)) { + rc_remember_passwords = atoi(&buf[19]); + } + if (!strncasecmp(buf, "display_message_numbers=", 24)) { + rc_display_message_numbers = atoi(&buf[24]); + } + if (!strncasecmp(buf, "force_mail_prompts=", 19)) { + rc_force_mail_prompts = atoi(&buf[19]); + } + if (!strncasecmp(buf, "ansi_color=", 11)) { + if (!strncasecmp(&buf[11], "on", 2)) + rc_ansi_color = 1; + if (!strncasecmp(&buf[11], "auto", 4)) + rc_ansi_color = 2; /* autodetect */ + if (!strncasecmp(&buf[11], "user", 4)) + rc_ansi_color = 3; /* user config */ + } + if (!strncasecmp(buf, "status_line=", 12)) { + if (!strncasecmp(&buf[12], "on", 2)) + enable_status_line = 1; + } + if (!strncasecmp(buf, "use_background=", 15)) { + if (!strncasecmp(&buf[15], "on", 2)) + rc_color_use_bg = 9; + } + if (!strncasecmp(buf, "prompt_control=", 15)) { + if (!strncasecmp(&buf[15], "on", 2)) + rc_prompt_control = 1; + if (!strncasecmp(&buf[15], "user", 4)) + rc_prompt_control = 3; /* user config */ + } + if (!strncasecmp(buf, "username=", 9)) + strcpy(rc_username, &buf[9]); + + if (!strncasecmp(buf, "password=", 9)) + strcpy(rc_password, &buf[9]); + + if (!strncasecmp(buf, "urlcmd=", 7)) + strcpy(rc_url_cmd, &buf[7]); + + if (!strncasecmp(buf, "opencmd=", 7)) + strcpy(rc_open_cmd, &buf[8]); + + if (!strncasecmp(buf, "gotmailcmd=", 11)) + strcpy(rc_gotmail_cmd, &buf[11]); + + if (!strncasecmp(buf, "cmd=", 4)) { + strcpy(buf, &buf[4]); + + cptr = (struct citcmd *) malloc(sizeof(struct citcmd)); + + cptr->c_cmdnum = atoi(buf); + for (d = strlen(buf); d >= 0; --d) + if (buf[d] == ',') + b = d; + strcpy(buf, &buf[b + 1]); + + cptr->c_axlevel = atoi(buf); + for (d = strlen(buf); d >= 0; --d) + if (buf[d] == ',') + b = d; + strcpy(buf, &buf[b + 1]); + + for (a = 0; a < 5; ++a) + cptr->c_keys[a][0] = 0; + + a = 0; + b = 0; + buf[strlen(buf) + 1] = 0; + while (!IsEmptyStr(buf)) { + b = strlen(buf); + for (d = strlen(buf); d >= 0; --d) + if (buf[d] == ',') + b = d; + strncpy(cptr->c_keys[a], buf, b); + cptr->c_keys[a][b] = 0; + if (buf[b] == ',') + strcpy(buf, &buf[b + 1]); + else + strcpy(buf, ""); + ++a; + } + + cptr->next = NULL; + if (cmdlist == NULL) + cmdlist = cptr; + else + lastcmd->next = cptr; + lastcmd = cptr; + } + } + fclose(ccfile); +} + + + +/* + * return the key associated with a command + */ +char keycmd(char *cmdstr) +{ + int a; + + for (a = 0; !IsEmptyStr(&cmdstr[a]); ++a) + if (cmdstr[a] == '&') + return (tolower(cmdstr[a + 1])); + return (0); +} + + +/* + * Output the string from a key command without the ampersand + * "mode" should be set to 0 for normal or 1 for ommand key highlighting + */ +char *cmd_expand(char *strbuf, int mode) +{ + int a; + static char exp[64]; + char buf[1024]; + + strcpy(exp, strbuf); + + for (a = 0; exp[a]; ++a) { + if (strbuf[a] == '&') { + + /* dont echo these non mnemonic command keys */ + int noecho = strbuf[a+1] == '<' || strbuf[a+1] == '>' || strbuf[a+1] == '+' || strbuf[a+1] == '-'; + + if (mode == 0) { + strcpy(&exp[a], &exp[a + 1 + noecho]); + } + if (mode == 1) { + exp[a] = '<'; + strcpy(buf, &exp[a + 2]); + exp[a + 2] = '>'; + exp[a + 3] = 0; + strcat(exp, buf); + } + } + if (!strncmp(&exp[a], "^r", 2)) { + strcpy(buf, exp); + strcpy(&exp[a], room_name); + strcat(exp, &buf[a + 2]); + } + if (!strncmp(&exp[a], "^c", 2)) { + exp[a] = ','; + strcpy(&exp[a + 1], &exp[a + 2]); + } + } + + return (exp); +} + + + +/* + * Comparison function to determine if entered commands match a + * command loaded from the config file. + */ +int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp) +{ + int a; + int cmdax; + + cmdax = 0; + if (is_room_aide) + cmdax = 1; + if (axlevel >= 6) + cmdax = 2; + + for (a = 0; a < ncomp; ++a) { + if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a])) + || (cptr->c_axlevel > cmdax)) + return (0); + } + return (1); +} + + +/* + * This function returns 1 if a given command requires a string input + */ +int requires_string(struct citcmd *cptr, int ncomp) +{ + int a; + char buf[64]; + + strcpy(buf, cptr->c_keys[ncomp - 1]); + for (a = 0; !IsEmptyStr(&buf[a]); ++a) { + if (buf[a] == ':') + return (1); + } + return (0); +} + + +/* + * Input a command at the main prompt. + * This function returns an integer command number. If the command prompts + * for a string then it is placed in the supplied buffer. + */ +int getcmd(CtdlIPC *ipc, char *argbuf) +{ + char cmdbuf[5]; + int cmdspaces[5]; + int cmdpos; + int ch; + int a; + int got; + int this_lazy_cmd; + struct citcmd *cptr; + + /* + * Starting a new command now, so set sigcaught to 0. This variable + * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has + * been interrupted by a keypress. + */ + sigcaught = 0; + + /* Switch color support on or off if we're in user mode */ + if (rc_ansi_color == 3) { + if (userflags & US_COLOR) + enable_color = 1; + else + enable_color = 0; + } + /* if we're running in idiot mode, display a cute little menu */ + IFNEXPERT formout(ipc, "mainmenu"); + + print_instant(); + strcpy(argbuf, ""); + cmdpos = 0; + for (a = 0; a < 5; ++a) + cmdbuf[a] = 0; + /* now the room prompt... */ + ok_to_interrupt = 1; + color(BRIGHT_WHITE); + scr_printf("\n%s", room_name); + color(DIM_WHITE); + scr_printf("%c ", room_prompt(room_flags)); + + while (1) { + ch = inkey(); + ok_to_interrupt = 0; + + /* Handle the backspace key, but only if there's something + * to backspace over... + */ + if ((ch == 8) && (cmdpos > 0)) { + back(cmdspaces[cmdpos - 1] + 1); + cmdbuf[cmdpos] = 0; + --cmdpos; + } + /* Spacebar invokes "lazy traversal" commands */ + if ((ch == 32) && (cmdpos == 0)) { + this_lazy_cmd = next_lazy_cmd; + if (this_lazy_cmd == 13) + next_lazy_cmd = 5; + if (this_lazy_cmd == 5) + next_lazy_cmd = 13; + for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) { + if (cptr->c_cmdnum == this_lazy_cmd) { + for (a = 0; a < 5; ++a) + if (cptr->c_keys[a][0] != 0) + scr_printf("%s ", cmd_expand( + cptr->c_keys[a], 0)); + scr_printf("\n"); + return (this_lazy_cmd); + } + } + scr_printf("\n"); + return (this_lazy_cmd); + } + /* Otherwise, process the command */ + cmdbuf[cmdpos] = tolower(ch); + + for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) { + if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) { + + scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0)); + cmdspaces[cmdpos] = strlen( + cmd_expand(cptr->c_keys[cmdpos], 0)); + if (cmdpos < 4) + if ((cptr->c_keys[cmdpos + 1]) != 0) + scr_putc(' '); + ++cmdpos; + } + } + + for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) { + if (cmdmatch(cmdbuf, cptr, 5)) { + /* We've found our command. */ + if (requires_string(cptr, cmdpos)) { + argbuf[0] = 0; + ctdl_getline(argbuf, 64, 0, 0); + } else { + scr_printf("\n"); + } + + /* If this command is one that changes rooms, + * then the next lazy-command (space bar) + * should be "read new" instead of "goto" + */ + if ((cptr->c_cmdnum == 5) + || (cptr->c_cmdnum == 6) + || (cptr->c_cmdnum == 47) + || (cptr->c_cmdnum == 52) + || (cptr->c_cmdnum == 16) + || (cptr->c_cmdnum == 20)) + next_lazy_cmd = 13; + + /* If this command is "read new" + * then the next lazy-command (space bar) + * should be "goto" + */ + if (cptr->c_cmdnum == 13) + next_lazy_cmd = 5; + + return (cptr->c_cmdnum); + + } + } + + if (ch == '?') { + scr_printf("\rOne of ... \n"); + for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) { + if (cmdmatch(cmdbuf, cptr, cmdpos)) { + for (a = 0; a < 5; ++a) { + keyopt(cmd_expand(cptr->c_keys[a], 1)); + scr_printf(" "); + } + scr_printf("\n"); + } + } + sigcaught = 0; + + scr_printf("\n%s%c ", room_name, room_prompt(room_flags)); + got = 0; + for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) { + if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) { + for (a = 0; a < cmdpos; ++a) { + scr_printf("%s ", + cmd_expand(cptr->c_keys[a], 0)); + } + got = 1; + } + } + } + } + +} + + + + + +/* + * set tty modes. commands are: + * + * 01- set to Citadel mode + * 2 - save current settings for later restoral + * 3 - restore saved settings + */ +#ifdef HAVE_TERMIOS_H +void stty_ctdl(int cmd) +{ /* SysV version of stty_ctdl() */ + struct termios live; + static struct termios saved_settings; + static int last_cmd = 0; + + if (cmd == SB_LAST) + cmd = last_cmd; + else + last_cmd = cmd; + + if ((cmd == 0) || (cmd == 1)) { + tcgetattr(0, &live); + live.c_iflag = ISTRIP | IXON | IXANY; + live.c_oflag = OPOST | ONLCR; + live.c_lflag = ISIG | NOFLSH; + + live.c_cc[VINTR] = 0; + live.c_cc[VQUIT] = 0; + +#ifdef hpux + live.c_cc[VMIN] = 0; + live.c_cc[VTIME] = 0; +#endif + + /* do we even need this stuff anymore? */ + /* live.c_line=0; */ + live.c_cc[VERASE] = 8; + live.c_cc[VKILL] = 24; + live.c_cc[VEOF] = 1; + live.c_cc[VEOL] = 255; + live.c_cc[VEOL2] = 0; + live.c_cc[VSTART] = 0; + tcsetattr(0, TCSADRAIN, &live); + } + if (cmd == 2) { + tcgetattr(0, &saved_settings); + } + if (cmd == 3) { + tcsetattr(0, TCSADRAIN, &saved_settings); + } + +} +#else +void stty_ctdl(int cmd) +{ /* BSD version of stty_ctdl() */ + struct sgttyb live; + static struct sgttyb saved_settings; + static int last_cmd = 0; + + if (cmd == SB_LAST) + cmd = last_cmd; + else + last_cmd = cmd; + + if ((cmd == 0) || (cmd == 1)) { + gtty(0, &live); + live.sg_flags |= CBREAK; + live.sg_flags |= CRMOD; + live.sg_flags |= NL1; + live.sg_flags &= ~ECHO; + if (cmd == 1) + live.sg_flags |= NOFLSH; + stty(0, &live); + } + if (cmd == 2) { + gtty(0, &saved_settings); + } + if (cmd == 3) { + stty(0, &saved_settings); + } +} +#endif + + +/* + * display_help() - help file viewer + */ +void display_help(CtdlIPC *ipc, char *name) +{ + formout(ipc, name); +} + + +/* + * fmout() - Citadel text formatter and paginator + */ +int fmout( + int width, /* screen width to use */ + FILE *fpin, /* file to read from, or NULL to format given text */ + char *text, /* text to be formatted (when fpin is NULL */ + FILE *fpout, /* file to write to, or NULL to write to screen */ + int subst) /* nonzero if we should use hypertext mode */ +{ + char *buffer = NULL; /* The current message */ + char *word = NULL; /* What we are about to actually print */ + char *e; /* Pointer to position in text */ + char old = 0; /* The previous character */ + int column = 0; /* Current column */ + size_t i; /* Generic counter */ + + /* Space for a single word, which can be at most screenwidth */ + word = (char *)calloc(1, width); + if (!word) { + scr_printf("Can't alloc memory to print message: %s!\n", + strerror(errno)); + logoff(NULL, 3); + } + + /* Read the entire message body into memory */ + if (fpin) { + buffer = load_message_from_file(fpin); + if (!buffer) { + scr_printf("Can't print message: %s!\n", + strerror(errno)); + logoff(NULL, 3); + } + } else { + buffer = text; + } + e = buffer; + + /* Run the message body */ + while (*e) { + /* Catch characters that shouldn't be there at all */ + if (*e == '\r') { + e++; + continue; + } + /* First, are we looking at a newline? */ + if (*e == '\n') { + e++; + if (*e == ' ') { /* Paragraph */ + if (fpout) { + fprintf(fpout, "\n"); + } else { + scr_printf("\n"); + } + column = 0; + } else if (old != ' ') {/* Don't print two spaces */ + if (fpout) { + fprintf(fpout, " "); + } else { + scr_printf(" "); + } + column++; + } + old = '\n'; + continue; + } + + /* Are we looking at a nonprintable? + * (This section is now commented out because we could be displaying + * a character set like UTF-8 or ISO-8859-1.) + if ( (*e < 32) || (*e > 126) ) { + e++; + continue; + } */ + + /* Or are we looking at a space? */ + if (*e == ' ') { + e++; + if (column >= width - 1) { + /* Are we in the rightmost column? */ + if (fpout) { + fprintf(fpout, "\n"); + } else { + scr_printf("\n"); + } + column = 0; + } else if (!(column == 0 && old == ' ')) { + /* Eat only the first space on a line */ + if (fpout) { + fprintf(fpout, " "); + } else { + scr_printf(" "); + } + column++; + } + /* ONLY eat the FIRST space on a line */ + old = ' '; + continue; + } + old = *e; + + /* Read a word, slightly messy */ + i = 0; + while (e[i]) { + if (!isprint(e[i]) && !isspace(e[i])) + e[i] = ' '; + if (isspace(e[i])) + break; + i++; + } + + /* We should never see these, but... slightly messy */ + if (e[i] == '\t' || e[i] == '\f' || e[i] == '\v') + e[i] = ' '; + + /* Break up really long words */ + /* TODO: auto-hyphenation someday? */ + if (i >= width) + i = width - 1; + strncpy(word, e, i); + word[i] = 0; + + /* Decide where to print the word */ + if (column + i >= width) { + /* Wrap to the next line */ + if (fpout) { + fprintf(fpout, "\n"); + } else { + scr_printf("\n"); + } + column = 0; + } + + /* Print the word */ + if (fpout) { + fprintf(fpout, "%s", word); + } else { + scr_printf("%s", word); + } + column += i; + e += i; /* Start over with the whitepsace! */ + } + + free(word); + if (fpin) /* We allocated this, remember? */ + free(buffer); + + /* Is this necessary? It makes the output kind of spacey. */ + if (fpout) { + fprintf(fpout, "\n"); + } else { + scr_printf("\n"); + } + + return sigcaught; +} + + +/* + * support ANSI color if defined + */ +void color(int colornum) +{ + static int hold_color; + static int current_color; + + if (colornum == COLOR_PUSH) { + hold_color = current_color; + return; + } + + if (colornum == COLOR_POP) { + color(hold_color); + return; + } + + current_color = colornum; + if (enable_color) { + /* When switching to dim white, actually output an 'original + * pair' sequence -- this looks better on black-on-white + * terminals. - Changed to ORIGINAL_PAIR as this actually + * wound up looking horrible on black-on-white terminals, not + * to mention transparent terminals. + */ + if (colornum == ORIGINAL_PAIR) + printf("\033[0;39;49m"); + else + printf("\033[%d;3%d;4%dm", + (colornum & 8) ? 1 : 0, + (colornum & 7), + rc_color_use_bg); + + } +} + +void cls(int colornum) +{ + if (enable_color) { + printf("\033[4%dm\033[2J\033[H\033[0m", + colornum ? colornum : rc_color_use_bg); + } +} + + +/* + * Detect whether ANSI color is available (answerback) + */ +void send_ansi_detect(void) +{ + if (rc_ansi_color == 2) { + printf("\033[c"); + scr_flush(); + time(&AnsiDetect); + } +} + +void look_for_ansi(void) +{ + fd_set rfds; + struct timeval tv; + char abuf[512]; + time_t now; + int a, rv; + + if (rc_ansi_color == 0) { + enable_color = 0; + } else if (rc_ansi_color == 1) { + enable_color = 1; + } else if (rc_ansi_color == 2) { + + /* otherwise, do the auto-detect */ + + strcpy(abuf, ""); + + time(&now); + if ((now - AnsiDetect) < 2) + sleep(1); + + do { + FD_ZERO(&rfds); + FD_SET(0, &rfds); + tv.tv_sec = 0; + tv.tv_usec = 1; + + select(1, &rfds, NULL, NULL, &tv); + if (FD_ISSET(0, &rfds)) { + abuf[strlen(abuf) + 1] = 0; + rv = read(0, &abuf[strlen(abuf)], 1); + if (rv < 0) { + scr_printf("failed to read after select: %s", + strerror(errno)); + break; + } + } + } while (FD_ISSET(0, &rfds)); + + for (a = 0; !IsEmptyStr(&abuf[a]); ++a) { + if ((abuf[a] == 27) && (abuf[a + 1] == '[') + && (abuf[a + 2] == '?')) { + enable_color = 1; + } + } + } +} + + +/* + * Display key options (highlight hotkeys inside angle brackets) + */ +void keyopt(char *buf) { + int i; + + color(DIM_WHITE); + for (i=0; !IsEmptyStr(&buf[i]); ++i) { + if (buf[i]=='<') { + scr_printf("%c", buf[i]); + color(BRIGHT_MAGENTA); + } else { + if (buf[i]=='>'&& buf[i+1] != '>') { + color(DIM_WHITE); + } + scr_printf("%c", buf[i]); + } + } + color(DIM_WHITE); +} + + + +/* + * Present a key-menu line choice type of thing + */ +char keymenu(char *menuprompt, char *menustring) { + int i, c, a; + int choices; + int do_prompt = 0; + char buf[1024]; + int ch; + int display_prompt = 1; + + choices = num_tokens(menustring, '|'); + + if (menuprompt != NULL) do_prompt = 1; + if ((menuprompt != NULL) && (IsEmptyStr(menuprompt))) do_prompt = 0; + + while (1) { + if (display_prompt) { + if (do_prompt) { + scr_printf("%s ", menuprompt); + } + else { + for (i=0; i "); + display_prompt = 0; + } + ch = lkey(); + + if ( (do_prompt) && (ch=='?') ) { + scr_printf("\rOne of... "); + scr_printf(" \n"); + for (i=0; i') ) { + for (a=0; !IsEmptyStr(&buf[a]); ++a) { + if ( (a!=(c-1)) && (a!=(c+1))) { + scr_putc(buf[a]); + } + } + scr_printf("\n"); + return ch; + } + } + } + } +}