textclient/src/routines.c

   1 /*
   2  * Client-side support functions.
   3  *
   4  * Copyright (c) 1987-2016 by the citadel.org team
   5  *
   6  *  This program is open source software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License version 3.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <fcntl.h>
  19 #include <stdio.h>
  20 #include <ctype.h>
  21 #include <string.h>
  22 #include <sys/types.h>
  23 #include <sys/ioctl.h>
  24 #include <pwd.h>
  25 #include <signal.h>
  26 #include <dirent.h>
  27 #include <errno.h>
  28
  29 #if TIME_WITH_SYS_TIME
  30 # include <sys/time.h>
  31 # include <time.h>
  32 #else
  33 # if HAVE_SYS_TIME_H
  34 #  include <sys/time.h>
  35 # else
  36 #  include <time.h>
  37 # endif
  38 #endif
  39
  40 #ifdef HAVE_LIMITS_H
  41 #include <limits.h>
  42 #endif
  43
  44 #include <libcitadel.h>
  45 #include "citadel_ipc.h"
  46 #include "screen.h"
  47
  48 #define ROUTINES_C
  49
  50 #include "routines.h"
  51 #include "commands.h"
  52 #include "citadel_decls.h"
  53 #include "routines2.h"
  54 #include "tuiconfig.h"
  55
  56 #define IFAIDE if(axlevel>=AxAideU)
  57 #define IFNAIDE if (axlevel<AxAideU)
  58
  59 extern unsigned userflags;
  60 extern char sigcaught;
  61 extern char rc_floor_mode;
  62 extern int rc_ansi_color;
  63 extern int rc_prompt_control;
  64
  65 /* Destructive backspace */
  66 void back(int spaces) {
  67         int a;
  68         for (a=0; a<spaces; ++a) {
  69                 scr_putc(8);
  70                 scr_putc(32);
  71                 scr_putc(8);
  72         }
  73 }
  74
  75 /*
  76  * Edit or delete a user (cmd=25 to edit/create, 96 to delete)
  77  */
  78 void edituser(CtdlIPC *ipc, int cmd)
  79 {
  80         char buf[SIZ];
  81         char who[USERNAME_SIZE];
  82         char newname[USERNAME_SIZE];
  83         struct ctdluser *user = NULL;
  84         int newnow = 0;
  85         int r;                          /* IPC response code */
  86         int change_name = 0;
  87
  88         strcpy(newname, "");
  89
  90         newprompt("User name: ", who, 29);
  91         while ((r = CtdlIPCAideGetUserParameters(ipc, who, &user, buf)) / 100 != 2) {
  92                 scr_printf("%s\n", buf);
  93                 if (cmd == 25) {
  94                         scr_printf("Do you want to create this user? ");
  95                         if (yesno()) {
  96                                 r = CtdlIPCCreateUser(ipc, who, 0, buf);
  97                                 if (r / 100 == 2) {
  98                                         newnow = 1;
  99                                         continue;
 100                                 }
 101                                 scr_printf("%s\n", buf);
 102                         }
 103                 }
 104                 free(user);
 105                 return;
 106         }
 107
 108         if (cmd == 25) {
 109                 val_user(ipc, user->fullname, 0); /* Display registration */
 110
 111                 if (!newnow) {
 112                         change_name = 1;
 113                         while (change_name == 1) {
 114                                 if (boolprompt("Change name", 0)) {
 115                                         strprompt("New name", newname, USERNAME_SIZE-1);
 116                                         r = CtdlIPCRenameUser(ipc, user->fullname, newname, buf);
 117                                         if (r / 100 != 2) {
 118                                                 scr_printf("%s\n", buf);
 119                                         }
 120                                         else {
 121                                                 strcpy(user->fullname, newname);
 122                                                 change_name = 0;
 123                                         }
 124                                 }
 125                                 else {
 126                                         change_name = 0;
 127                                 }
 128                         }
 129                 }
 130
 131                 if (newnow || boolprompt("Change password", 0)) {
 132                         strprompt("Password", user->password, -19);
 133                 }
 134
 135                 user->axlevel = intprompt("Access level", user->axlevel, 0, 6);
 136                 if (boolprompt("Permission to send Internet mail", (user->flags & US_INTERNET)))
 137                         user->flags |= US_INTERNET;
 138                 else
 139                         user->flags &= ~US_INTERNET;
 140                 if (boolprompt("Ask user to register again", !(user->flags & US_REGIS)))
 141                         user->flags &= ~US_REGIS;
 142                 else
 143                         user->flags |= US_REGIS;
 144                 user->timescalled = intprompt("Times called",
 145                                 user->timescalled, 0, INT_MAX);
 146                 user->posted = intprompt("Messages posted",
 147                                         user->posted, 0, INT_MAX);
 148                 user->lastcall = boolprompt("Set last call to now", 0) ?
 149                                         time(NULL) : user->lastcall;
 150                 user->USuserpurge = intprompt("Purge time (in days, 0 for system default",
 151                                 user->USuserpurge, 0, INT_MAX);
 152         }
 153
 154         if (cmd == 96) {
 155                 scr_printf("Do you want to delete this user? ");
 156                 if (!yesno()) {
 157                         free(user);
 158                         return;
 159                 }
 160                 user->axlevel = AxDeleted;
 161         }
 162
 163         r = CtdlIPCAideSetUserParameters(ipc, user, buf);
 164         if (r / 100 != 2) {
 165                 scr_printf("%s\n", buf);
 166         }
 167         free(user);
 168 }
 169
 170
 171 /* Display a prompt and flip a bit based on whether the user answers
 172  * yes or no.  Yes=1 and No=0, unless 'backwards' is set to a nonzero value
 173  * in which case No=1 and Yes=0.
 174  */
 175 int set_attr(CtdlIPC *ipc, unsigned int sval, char *prompt, unsigned int sbit, int backwards)
 176 {
 177         int a;
 178         int temp;
 179
 180         temp = sval;
 181         color(DIM_WHITE);
 182         scr_printf("%50s ", prompt);
 183         color(DIM_MAGENTA);
 184         scr_printf("[");
 185         color(BRIGHT_MAGENTA);
 186
 187         if (backwards) {
 188                 scr_printf("%3s", ((temp&sbit) ? "No":"Yes"));
 189         }
 190         else {
 191                 scr_printf("%3s", ((temp&sbit) ? "Yes":"No"));
 192         }
 193
 194         color(DIM_MAGENTA);
 195         scr_printf("]? ");
 196         color(BRIGHT_CYAN);
 197         a = (temp & sbit);
 198         if (a != 0) a = 1;
 199         if (backwards) a = 1 - a;
 200         a = yesno_d(a);
 201         if (backwards) a = 1 - a;
 202         color(DIM_WHITE);
 203         temp = (temp|sbit);
 204         if (!a) temp = (temp^sbit);
 205         return(temp);
 206 }
 207
 208 /*
 209  * modes are:  0 - .EC command, 1 - .EC for new user,
 210  *             2 - toggle Xpert mode  3 - toggle floor mode
 211  */
 212 void enter_config(CtdlIPC *ipc, int mode)
 213 {
 214         char buf[SIZ];
 215         struct ctdluser *user = NULL;
 216         int r;                          /* IPC response code */
 217
 218         r = CtdlIPCGetConfig(ipc, &user, buf);
 219         if (r / 100 != 2) {
 220                 scr_printf("%s\n", buf);
 221                 free(user);
 222                 return;
 223         }
 224
 225         if (mode == 0 || mode == 1) {
 226
 227                 user->flags = set_attr(ipc, user->flags,
 228                                        "Are you an experienced Citadel user",
 229                                        US_EXPERT, 0);
 230                 if ((user->flags & US_EXPERT) == 0 && mode == 1) {
 231                         free(user);
 232                         return;
 233                 }
 234
 235                 user->flags = set_attr(
 236                         ipc,
 237                         user->flags,
 238                         "Print last old message on New message request",
 239                         US_LASTOLD,
 240                         0
 241                 );
 242
 243                 user->flags = set_attr(
 244                         ipc,
 245                         user->flags,
 246                         "Prompt after each message",
 247                         US_NOPROMPT,
 248                         1
 249                 );
 250
 251                 if ((user->flags & US_NOPROMPT) == 0) {
 252                         user->flags = set_attr(
 253                                 ipc,
 254                                 user->flags,
 255                                 "Use 'disappearing' prompts",
 256                                 US_DISAPPEAR,
 257                                 0
 258                         );
 259                 }
 260
 261                 user->flags = set_attr(
 262                         ipc,
 263                         user->flags,
 264                         "Pause after each screenful of text",
 265                         US_PAGINATOR,
 266                         0
 267                 );
 268
 269                 if (rc_prompt_control == 3 && (user->flags & US_PAGINATOR)) {
 270                         user->flags = set_attr(
 271                                 ipc,
 272                                 user->flags,
 273                                 "<N>ext and <S>top work at paginator prompt",
 274                                 US_PROMPTCTL,
 275                                 0
 276                         );
 277                 }
 278
 279                 if (rc_floor_mode == RC_DEFAULT) {
 280                         user->flags = set_attr(
 281                                 ipc,
 282                                 user->flags,
 283                                 "View rooms by floor",
 284                                 US_FLOORS,
 285                                 0
 286                         );
 287                 }
 288
 289                 if (rc_ansi_color == 3) {
 290                         user->flags = set_attr(
 291                                 ipc,
 292                                 user->flags,
 293                                 "Enable color support",
 294                                 US_COLOR,
 295                                 0
 296                         );
 297                 }
 298
 299                 if ((user->flags & US_EXPERT) == 0) {
 300                         formout(ipc, "unlisted");
 301                 }
 302
 303                 user->flags = set_attr(
 304                         ipc,
 305                         user->flags,
 306                         "Be unlisted in userlog",
 307                         US_UNLISTED,
 308                         0
 309                 );
 310
 311                 if (!IsEmptyStr(editor_path)) {
 312                         user->flags = set_attr(
 313                                 ipc,
 314                                 user->flags,
 315                                 "Always enter messages with the full-screen editor",
 316                                 US_EXTEDIT,
 317                                 0
 318                         );
 319                 }
 320
 321         }
 322
 323         if (mode == 2) {
 324                 if (user->flags & US_EXPERT) {
 325                         user->flags ^= US_EXPERT;
 326                         scr_printf("Expert mode now OFF\n");
 327                 } else {
 328                         user->flags |= US_EXPERT;
 329                         scr_printf("Expert mode now ON\n");
 330                 }
 331         }
 332
 333         if (mode == 3) {
 334                 if (user->flags & US_FLOORS) {
 335                         user->flags ^= US_FLOORS;
 336                         scr_printf("Floor mode now OFF\n");
 337                 } else {
 338                         user->flags |= US_FLOORS;
 339                         scr_printf("Floor mode now ON\n");
 340                 }
 341         }
 342
 343         r = CtdlIPCSetConfig(ipc, user, buf);
 344         if (r / 100 != 2) scr_printf("%s\n", buf);
 345         userflags = user->flags;
 346         free(user);
 347 }
 348
 349 /*
 350  * getstring()  -  get a line of text from a file
 351  *                 ignores lines beginning with "#"
 352  */
 353 int getstring(FILE *fp, char *string)
 354 {
 355         int a,c;
 356         do {
 357                 strcpy(string,"");
 358                 a=0;
 359                 do {
 360                         c=getc(fp);
 361                         if (c<0) {
 362                                 string[a]=0;
 363                                 return(-1);
 364                         }
 365                         string[a++]=c;
 366                 } while(c!=10);
 367                         string[a-1]=0;
 368         } while(string[0]=='#');
 369         return(strlen(string));
 370 }
 371
 372
 373 /* Searches for patn in search string */
 374 int pattern(char *search, char *patn) {
 375         int a,b,len;
 376
 377         len = strlen(patn);
 378         for (a=0; !IsEmptyStr(&search[a]); ++a) {
 379                 b=strncasecmp(&search[a],patn,len);
 380                 if (b==0) return(b);
 381         }
 382         return(-1);
 383 }
 384
 385
 386 void strproc(char *string)
 387 {
 388         int a;
 389
 390         if (IsEmptyStr(string)) return;
 391
 392         /* Convert non-printable characters to blanks */
 393         for (a=0; !IsEmptyStr(&string[a]); ++a) {
 394                 if (string[a]<32) string[a]=32;
 395                 if (string[a]>126) string[a]=32;
 396         }
 397
 398         /* Remove leading and trailing blanks */
 399         while(string[0]<33) strcpy(string,&string[1]);
 400         while(string[strlen(string)-1]<33) string[strlen(string)-1]=0;
 401
 402         /* Remove double blanks */
 403         for (a=0; a<strlen(string); ++a) {
 404                 if ((string[a]==32)&&(string[a+1]==32)) {
 405                         strcpy(&string[a],&string[a+1]);
 406                         a=0;
 407                 }
 408         }
 409
 410         /* remove characters which would interfere with the network */
 411         for (a=0; a<strlen(string); ++a) {
 412                 if (string[a]=='!') strcpy(&string[a],&string[a+1]);
 413                 if (string[a]=='@') strcpy(&string[a],&string[a+1]);
 414                 if (string[a]=='_') strcpy(&string[a],&string[a+1]);
 415                 if (string[a]==',') strcpy(&string[a],&string[a+1]);
 416                 if (string[a]=='%') strcpy(&string[a],&string[a+1]);
 417                 if (string[a]=='|') strcpy(&string[a],&string[a+1]);
 418         }
 419
 420 }
 421
 422
 423 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax)
 424 {
 425         static char dots[] =
 426                 "**************************************************";
 427         char dots_printed[51];
 428         char fmt[42];
 429         unsigned long a;
 430
 431         if (curr >= cmax) {
 432                 scr_printf("\r%79s\r","");
 433         } else {
 434                 /* a will be range 0-50 rather than 0-100 */
 435                 a=(curr * 50) / cmax;
 436                 sprintf(fmt, "[%%s%%%lds] %%3ld%%%% %%10ld/%%10ld\r", 50 - a);
 437                 strncpy(dots_printed, dots, a);
 438                 dots_printed[a] = 0;
 439                 scr_printf(fmt, dots_printed, "",
 440                                 curr * 100 / cmax, curr, cmax);
 441                 scr_flush();
 442         }
 443 }
 444
 445
 446 /*
 447  * NOT the same locate_host() in locate_host.c.  This one just does a
 448  * 'who am i' to try to discover where the user is...
 449  */
 450 void locate_host(CtdlIPC* ipc, char *hbuf)
 451 {
 452         FILE *who = (FILE *)popen("who am i","r");
 453         if (who==NULL) {
 454                 strcpy(hbuf, ipc->ServInfo.fqdn);
 455                 return;
 456         }
 457         fgets(hbuf, SIZ, who);
 458         pclose(who);
 459         stripallbut(hbuf, '(' , ')' );
 460 }
 461
 462 /*
 463  * miscellaneous server commands (testing, etc.)
 464  */
 465 void misc_server_cmd(CtdlIPC *ipc, char *cmd) {
 466         char buf[SIZ];
 467
 468         CtdlIPC_chat_send(ipc, cmd);
 469         CtdlIPC_chat_recv(ipc, buf);
 470         scr_printf("%s\n",buf);
 471         if (buf[0]=='1') {
 472                 set_keepalives(KA_HALF);
 473                 while (CtdlIPC_chat_recv(ipc, buf), strcmp(buf,"000")) {
 474                         scr_printf("%s\n",buf);
 475                 }
 476                 set_keepalives(KA_YES);
 477                 return;
 478         }
 479         if (buf[0]=='4') {
 480                 do {
 481                         newprompt("> ",buf,255);
 482                         CtdlIPC_chat_send(ipc, buf);
 483                 } while(strcmp(buf,"000"));
 484                 return;
 485         }
 486 }
 487
 488
 489 /*
 490  * compute the checksum of a file
 491  */
 492 int file_checksum(char *filename)
 493 {
 494         int cksum = 0;
 495         int ch;
 496         FILE *fp;
 497
 498         fp = fopen(filename,"r");
 499         if (fp == NULL) return(0);
 500
 501         /* yes, this algorithm may allow cksum to overflow, but that's ok
 502          * as long as it overflows consistently, which it will.
 503          */
 504         while (ch=getc(fp), ch>=0) {
 505                 cksum = (cksum + ch);
 506         }
 507
 508         fclose(fp);
 509         return(cksum);
 510 }
 511
 512 /*
 513  * nuke a directory and its contents
 514  */
 515 int nukedir(char *dirname)
 516 {
 517         DIR *dp;
 518         struct dirent *d;
 519         char filename[SIZ];
 520
 521         dp = opendir(dirname);
 522         if (dp == NULL) {
 523                 return(errno);
 524         }
 525
 526         while (d = readdir(dp), d != NULL) {
 527                 snprintf(filename, sizeof filename, "%s/%s",
 528                         dirname, d->d_name);
 529                 unlink(filename);
 530         }
 531
 532         closedir(dp);
 533         return(rmdir(dirname));
 534 }