--- /dev/null
+/*
+ * 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 <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#else
+#include <sgtty.h>
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifdef THREADED_CLIENT
+#include <pthread.h>
+#endif
+
+#include <signal.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <libcitadel.h>
+#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 <C>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<choices; ++i) {
+ extract_token(buf, menustring, i, '|', sizeof buf);
+ keyopt(buf);
+ scr_printf(" ");
+ }
+ }
+ scr_printf("-> ");
+ display_prompt = 0;
+ }
+ ch = lkey();
+
+ if ( (do_prompt) && (ch=='?') ) {
+ scr_printf("\rOne of... ");
+ scr_printf(" \n");
+ for (i=0; i<choices; ++i) {
+ extract_token(buf, menustring, i, '|', sizeof buf);
+ scr_printf(" ");
+ keyopt(buf);
+ scr_printf("\n");
+ }
+ scr_printf("\n");
+ display_prompt = 1;
+ }
+
+ for (i=0; i<choices; ++i) {
+ extract_token(buf, menustring, i, '|', sizeof buf);
+ for (c=1; !IsEmptyStr(&buf[c]); ++c) {
+ if ( (ch == tolower(buf[c]))
+ && (buf[c-1]=='<')
+ && (buf[c+1]=='>') ) {
+ for (a=0; !IsEmptyStr(&buf[a]); ++a) {
+ if ( (a!=(c-1)) && (a!=(c+1))) {
+ scr_putc(buf[a]);
+ }
+ }
+ scr_printf("\n");
+ return ch;
+ }
+ }
+ }
+ }
+}
projects / citadel.git / blobdiff