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 a user's Internet email addresses
  77  */
  78 void edit_user_internet_email_addresses(CtdlIPC *ipc, char *who)
  79 {
  80         char buf[SIZ];
  81         char *resp = NULL;
  82         int num_recs = 0;
  83         char **recs = NULL;
  84         char ch;
  85         int i, j;
  86         int quitting = 0;
  87         int modified = 0;
  88         int r;
  89         char emailaddrs[512];
  90
  91         r = CtdlIPCAideGetEmailAddresses(ipc, who, emailaddrs, buf);
  92         if (r / 100 == 1) {
  93                 while (!IsEmptyStr(emailaddrs)) {
  94                         extract_token(buf, emailaddrs, 0, '\n', sizeof buf);
  95                         remove_token(emailaddrs, 0, '\n');
  96                         if (!IsEmptyStr(buf)) {
  97                                 ++num_recs;
  98                                 if (num_recs == 1) recs = malloc(sizeof(char *));
  99                                 else recs = realloc(recs, (sizeof(char *)) * num_recs);
 100                                 recs[num_recs-1] = malloc(strlen(buf) + 1);
 101                                 strcpy(recs[num_recs-1], buf);
 102                         }
 103                 }
 104         }
 105
 106         do {
 107                 scr_printf("\n");
 108                 color(BRIGHT_WHITE);
 109                 scr_printf("    Internet email addresses for %s\n", who);
 110                 color(DIM_WHITE);
 111                 scr_printf("--- --------------------------------------------------\n");
 112                 for (i=0; i<num_recs; ++i) {
 113                         color(DIM_WHITE);
 114                         scr_printf("%3d ", i+1);
 115                         color(BRIGHT_CYAN);
 116                         scr_printf("%s\n", recs[i]);
 117                         color(DIM_WHITE);
 118                 }
 119
 120                 ch = keymenu("", "<A>dd|<D>elete|<S>ave|<Q>uit");
 121                 switch(ch) {
 122                         case 'a':
 123                                 newprompt("Enter new email address: ", buf, 50);
 124                                 striplt(buf);
 125                                 if (!IsEmptyStr(buf)) {
 126                                         // FIXME validate the email address (format, our own domain, addr does not belong to another user)
 127                                         ++num_recs;
 128                                         if (num_recs == 1) {
 129                                                 recs = malloc(sizeof(char *));
 130                                         }
 131                                         else {
 132                                                 recs = realloc(recs, (sizeof(char *)) * num_recs);
 133                                         }
 134                                         recs[num_recs-1] = strdup(buf);
 135                                 }
 136                                 modified = 1;
 137                                 break;
 138                         case 'd':
 139                                 i = intprompt("Delete which address", 1, 1, num_recs) - 1;
 140                                 free(recs[i]);
 141                                 --num_recs;
 142                                 for (j=i; j<num_recs; ++j) {
 143                                         recs[j] = recs[j+1];
 144                                 }
 145                                 modified = 1;
 146                                 break;
 147                         case 's':
 148                                 r = 1;
 149                                 for (i = 0; i < num_recs; i++)
 150                                         r += 1 + strlen(recs[i]);
 151                                 resp = (char *)calloc(1, r);
 152                                 if (!resp) {
 153                                         scr_printf("Can't save config - out of memory!\n");
 154                                         logoff(ipc, 1);
 155                                 }
 156                                 if (num_recs) for (i = 0; i < num_recs; i++) {
 157                                         strcat(resp, recs[i]);
 158                                         strcat(resp, "\n");
 159                                 }
 160                                 r = CtdlIPCAideSetEmailAddresses(ipc, who, resp, buf);
 161                                 if (r / 100 != 4) {
 162                                         scr_printf("%s\n", buf);
 163                                 } else {
 164                                         scr_printf("Saved %d addresses.\n", num_recs);
 165                                         modified = 0;
 166                                         quitting = 1;
 167                                 }
 168                                 free(resp);
 169                                 break;
 170                         case 'q':
 171                                 quitting = !modified || boolprompt("Quit without saving", 0);
 172                                 break;
 173                         default:
 174                                 break;
 175                 }
 176         } while (!quitting);
 177
 178         if (recs != NULL) {
 179                 for (i=0; i<num_recs; ++i) free(recs[i]);
 180                 free(recs);
 181         }
 182 }
 183
 184
 185 /*
 186  * Edit or delete a user (cmd=25 to edit/create, 96 to delete)
 187  */
 188 void edituser(CtdlIPC *ipc, int cmd)
 189 {
 190         char buf[SIZ];
 191         char who[USERNAME_SIZE];
 192         char newname[USERNAME_SIZE];
 193         struct ctdluser *user = NULL;
 194         int newnow = 0;
 195         int r;                          /* IPC response code */
 196         int change_name = 0;
 197
 198         strcpy(newname, "");
 199
 200         newprompt("User name: ", who, 29);
 201         while ((r = CtdlIPCAideGetUserParameters(ipc, who, &user, buf)) / 100 != 2) {
 202                 scr_printf("%s\n", buf);
 203                 if (cmd == 25) {
 204                         scr_printf("Do you want to create this user? ");
 205                         if (yesno()) {
 206                                 r = CtdlIPCCreateUser(ipc, who, 0, buf);
 207                                 if (r / 100 == 2) {
 208                                         newnow = 1;
 209                                         continue;
 210                                 }
 211                                 scr_printf("%s\n", buf);
 212                         }
 213                 }
 214                 free(user);
 215                 return;
 216         }
 217
 218         if (cmd == 25) {                // user edit
 219
 220                 /* val_user(ipc, user->fullname, 0); we used to display the vCard here but there's really no need */
 221
 222                 if (!newnow) {
 223                         change_name = 1;
 224                         while (change_name == 1) {
 225                                 if (boolprompt("Change name", 0)) {
 226                                         strprompt("New name", newname, USERNAME_SIZE-1);
 227                                         r = CtdlIPCRenameUser(ipc, user->fullname, newname, buf);
 228                                         if (r / 100 != 2) {
 229                                                 scr_printf("%s\n", buf);
 230                                         }
 231                                         else {
 232                                                 strcpy(user->fullname, newname);
 233                                                 change_name = 0;
 234                                         }
 235                                 }
 236                                 else {
 237                                         change_name = 0;
 238                                 }
 239                         }
 240                 }
 241
 242                 if (newnow || boolprompt("Change password", 0)) {
 243                         strprompt("Password", user->password, -19);
 244                 }
 245
 246                 user->axlevel = intprompt("Access level", user->axlevel, 0, 6);
 247                 if (boolprompt("Permission to send Internet mail", (user->flags & US_INTERNET))) {
 248                         user->flags |= US_INTERNET;
 249                 }
 250                 else {
 251                         user->flags &= ~US_INTERNET;
 252                 }
 253                 if (boolprompt("Ask user to register again", !(user->flags & US_REGIS))) {
 254                         user->flags &= ~US_REGIS;
 255                 }
 256                 else {
 257                         user->flags |= US_REGIS;
 258                 }
 259                 user->timescalled = intprompt("Times called", user->timescalled, 0, INT_MAX);
 260                 user->posted = intprompt("Messages posted", user->posted, 0, INT_MAX);
 261                 user->lastcall = boolprompt("Set last login to now", 0) ?  time(NULL) : user->lastcall;
 262                 user->USuserpurge = intprompt("Purge time (in days, 0 for system default", user->USuserpurge, 0, INT_MAX);
 263         }
 264
 265         if (cmd == 96) {
 266                 scr_printf("Do you want to delete this user? ");
 267                 if (!yesno()) {
 268                         free(user);
 269                         return;
 270                 }
 271                 user->axlevel = AxDeleted;
 272         }
 273
 274         r = CtdlIPCAideSetUserParameters(ipc, user, buf);
 275         if (r / 100 != 2) {
 276                 scr_printf("%s\n", buf);
 277         }
 278         free(user);
 279
 280         if (boolprompt("Edit this user's Internet email addresses", 0)) {
 281                 edit_user_internet_email_addresses(ipc, who);
 282         }
 283
 284 }
 285
 286
 287 /* Display a prompt and flip a bit based on whether the user answers
 288  * yes or no.  Yes=1 and No=0, unless 'backwards' is set to a nonzero value
 289  * in which case No=1 and Yes=0.
 290  */
 291 int set_attr(CtdlIPC *ipc, unsigned int sval, char *prompt, unsigned int sbit, int backwards)
 292 {
 293         int a;
 294         int temp;
 295
 296         temp = sval;
 297         color(DIM_WHITE);
 298         scr_printf("%50s ", prompt);
 299         color(DIM_MAGENTA);
 300         scr_printf("[");
 301         color(BRIGHT_MAGENTA);
 302
 303         if (backwards) {
 304                 scr_printf("%3s", ((temp&sbit) ? "No":"Yes"));
 305         }
 306         else {
 307                 scr_printf("%3s", ((temp&sbit) ? "Yes":"No"));
 308         }
 309
 310         color(DIM_MAGENTA);
 311         scr_printf("]? ");
 312         color(BRIGHT_CYAN);
 313         a = (temp & sbit);
 314         if (a != 0) a = 1;
 315         if (backwards) a = 1 - a;
 316         a = yesno_d(a);
 317         if (backwards) a = 1 - a;
 318         color(DIM_WHITE);
 319         temp = (temp|sbit);
 320         if (!a) temp = (temp^sbit);
 321         return(temp);
 322 }
 323
 324 /*
 325  * modes are:  0 - .EC command, 1 - .EC for new user,
 326  *             2 - toggle Xpert mode  3 - toggle floor mode
 327  */
 328 void enter_config(CtdlIPC *ipc, int mode)
 329 {
 330         char buf[SIZ];
 331         struct ctdluser *user = NULL;
 332         int r;                          /* IPC response code */
 333
 334         r = CtdlIPCGetConfig(ipc, &user, buf);
 335         if (r / 100 != 2) {
 336                 scr_printf("%s\n", buf);
 337                 free(user);
 338                 return;
 339         }
 340
 341         if (mode == 0 || mode == 1) {
 342
 343                 user->flags = set_attr(ipc, user->flags,
 344                                        "Are you an experienced Citadel user",
 345                                        US_EXPERT, 0);
 346                 if ((user->flags & US_EXPERT) == 0 && mode == 1) {
 347                         free(user);
 348                         return;
 349                 }
 350
 351                 user->flags = set_attr(
 352                         ipc,
 353                         user->flags,
 354                         "Print last old message on New message request",
 355                         US_LASTOLD,
 356                         0
 357                 );
 358
 359                 user->flags = set_attr(
 360                         ipc,
 361                         user->flags,
 362                         "Prompt after each message",
 363                         US_NOPROMPT,
 364                         1
 365                 );
 366
 367                 if ((user->flags & US_NOPROMPT) == 0) {
 368                         user->flags = set_attr(
 369                                 ipc,
 370                                 user->flags,
 371                                 "Use 'disappearing' prompts",
 372                                 US_DISAPPEAR,
 373                                 0
 374                         );
 375                 }
 376
 377                 user->flags = set_attr(
 378                         ipc,
 379                         user->flags,
 380                         "Pause after each screenful of text",
 381                         US_PAGINATOR,
 382                         0
 383                 );
 384
 385                 if (rc_prompt_control == 3 && (user->flags & US_PAGINATOR)) {
 386                         user->flags = set_attr(
 387                                 ipc,
 388                                 user->flags,
 389                                 "<N>ext and <S>top work at paginator prompt",
 390                                 US_PROMPTCTL,
 391                                 0
 392                         );
 393                 }
 394
 395                 if (rc_floor_mode == RC_DEFAULT) {
 396                         user->flags = set_attr(
 397                                 ipc,
 398                                 user->flags,
 399                                 "View rooms by floor",
 400                                 US_FLOORS,
 401                                 0
 402                         );
 403                 }
 404
 405                 if (rc_ansi_color == 3) {
 406                         user->flags = set_attr(
 407                                 ipc,
 408                                 user->flags,
 409                                 "Enable color support",
 410                                 US_COLOR,
 411                                 0
 412                         );
 413                 }
 414
 415                 if ((user->flags & US_EXPERT) == 0) {
 416                         formout(ipc, "unlisted");
 417                 }
 418
 419                 user->flags = set_attr(
 420                         ipc,
 421                         user->flags,
 422                         "Be unlisted in userlog",
 423                         US_UNLISTED,
 424                         0
 425                 );
 426
 427                 if (!IsEmptyStr(editor_path)) {
 428                         user->flags = set_attr(
 429                                 ipc,
 430                                 user->flags,
 431                                 "Always enter messages with the full-screen editor",
 432                                 US_EXTEDIT,
 433                                 0
 434                         );
 435                 }
 436
 437         }
 438
 439         if (mode == 2) {
 440                 if (user->flags & US_EXPERT) {
 441                         user->flags ^= US_EXPERT;
 442                         scr_printf("Expert mode now OFF\n");
 443                 } else {
 444                         user->flags |= US_EXPERT;
 445                         scr_printf("Expert mode now ON\n");
 446                 }
 447         }
 448
 449         if (mode == 3) {
 450                 if (user->flags & US_FLOORS) {
 451                         user->flags ^= US_FLOORS;
 452                         scr_printf("Floor mode now OFF\n");
 453                 } else {
 454                         user->flags |= US_FLOORS;
 455                         scr_printf("Floor mode now ON\n");
 456                 }
 457         }
 458
 459         r = CtdlIPCSetConfig(ipc, user, buf);
 460         if (r / 100 != 2) scr_printf("%s\n", buf);
 461         userflags = user->flags;
 462         free(user);
 463 }
 464
 465 /*
 466  * getstring()  -  get a line of text from a file
 467  *                 ignores lines beginning with "#"
 468  */
 469 int getstring(FILE *fp, char *string)
 470 {
 471         int a,c;
 472         do {
 473                 strcpy(string,"");
 474                 a=0;
 475                 do {
 476                         c=getc(fp);
 477                         if (c<0) {
 478                                 string[a]=0;
 479                                 return(-1);
 480                         }
 481                         string[a++]=c;
 482                 } while(c!=10);
 483                         string[a-1]=0;
 484         } while(string[0]=='#');
 485         return(strlen(string));
 486 }
 487
 488
 489 /* Searches for patn in search string */
 490 int pattern(char *search, char *patn) {
 491         int a,b,len;
 492
 493         len = strlen(patn);
 494         for (a=0; !IsEmptyStr(&search[a]); ++a) {
 495                 b=strncasecmp(&search[a],patn,len);
 496                 if (b==0) return(b);
 497         }
 498         return(-1);
 499 }
 500
 501
 502 void strproc(char *string)
 503 {
 504         int a;
 505
 506         if (IsEmptyStr(string)) return;
 507
 508         /* Convert non-printable characters to blanks */
 509         for (a=0; !IsEmptyStr(&string[a]); ++a) {
 510                 if (string[a]<32) string[a]=32;
 511                 if (string[a]>126) string[a]=32;
 512         }
 513
 514         /* Remove leading and trailing blanks */
 515         while(string[0]<33) strcpy(string,&string[1]);
 516         while(string[strlen(string)-1]<33) string[strlen(string)-1]=0;
 517
 518         /* Remove double blanks */
 519         for (a=0; a<strlen(string); ++a) {
 520                 if ((string[a]==32)&&(string[a+1]==32)) {
 521                         strcpy(&string[a],&string[a+1]);
 522                         a=0;
 523                 }
 524         }
 525
 526         /* remove characters which would interfere with the network */
 527         for (a=0; a<strlen(string); ++a) {
 528                 if (string[a]=='!') strcpy(&string[a],&string[a+1]);
 529                 if (string[a]=='@') strcpy(&string[a],&string[a+1]);
 530                 if (string[a]=='_') strcpy(&string[a],&string[a+1]);
 531                 if (string[a]==',') strcpy(&string[a],&string[a+1]);
 532                 if (string[a]=='%') strcpy(&string[a],&string[a+1]);
 533                 if (string[a]=='|') strcpy(&string[a],&string[a+1]);
 534         }
 535
 536 }
 537
 538
 539 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax)
 540 {
 541         static char dots[] =
 542                 "**************************************************";
 543         char dots_printed[51];
 544         char fmt[42];
 545         unsigned long a;
 546
 547         if (curr >= cmax) {
 548                 scr_printf("\r%79s\r","");
 549         } else {
 550                 /* a will be range 0-50 rather than 0-100 */
 551                 a=(curr * 50) / cmax;
 552                 sprintf(fmt, "[%%s%%%lds] %%3ld%%%% %%10ld/%%10ld\r", 50 - a);
 553                 strncpy(dots_printed, dots, a);
 554                 dots_printed[a] = 0;
 555                 scr_printf(fmt, dots_printed, "",
 556                                 curr * 100 / cmax, curr, cmax);
 557                 scr_flush();
 558         }
 559 }
 560
 561
 562 /*
 563  * NOT the same locate_host() in locate_host.c.  This one just does a
 564  * 'who am i' to try to discover where the user is...
 565  */
 566 void locate_host(CtdlIPC* ipc, char *hbuf)
 567 {
 568         FILE *who = (FILE *)popen("who am i","r");
 569         if (who==NULL) {
 570                 strcpy(hbuf, ipc->ServInfo.fqdn);
 571                 return;
 572         }
 573         fgets(hbuf, SIZ, who);
 574         pclose(who);
 575         stripallbut(hbuf, '(' , ')' );
 576 }
 577
 578 /*
 579  * miscellaneous server commands (testing, etc.)
 580  */
 581 void misc_server_cmd(CtdlIPC *ipc, char *cmd) {
 582         char buf[SIZ];
 583
 584         CtdlIPC_chat_send(ipc, cmd);
 585         CtdlIPC_chat_recv(ipc, buf);
 586         scr_printf("%s\n",buf);
 587         if (buf[0]=='1') {
 588                 set_keepalives(KA_HALF);
 589                 while (CtdlIPC_chat_recv(ipc, buf), strcmp(buf,"000")) {
 590                         scr_printf("%s\n",buf);
 591                 }
 592                 set_keepalives(KA_YES);
 593                 return;
 594         }
 595         if (buf[0]=='4') {
 596                 do {
 597                         newprompt("> ",buf,255);
 598                         CtdlIPC_chat_send(ipc, buf);
 599                 } while(strcmp(buf,"000"));
 600                 return;
 601         }
 602 }
 603
 604
 605 /*
 606  * compute the checksum of a file
 607  */
 608 int file_checksum(char *filename)
 609 {
 610         int cksum = 0;
 611         int ch;
 612         FILE *fp;
 613
 614         fp = fopen(filename,"r");
 615         if (fp == NULL) return(0);
 616
 617         /* yes, this algorithm may allow cksum to overflow, but that's ok
 618          * as long as it overflows consistently, which it will.
 619          */
 620         while (ch=getc(fp), ch>=0) {
 621                 cksum = (cksum + ch);
 622         }
 623
 624         fclose(fp);
 625         return(cksum);
 626 }
 627
 628 /*
 629  * nuke a directory and its contents
 630  */
 631 int nukedir(char *dirname)
 632 {
 633         DIR *dp;
 634         struct dirent *d;
 635         char filename[SIZ];
 636
 637         dp = opendir(dirname);
 638         if (dp == NULL) {
 639                 return(errno);
 640         }
 641
 642         while (d = readdir(dp), d != NULL) {
 643                 snprintf(filename, sizeof filename, "%s/%s",
 644                         dirname, d->d_name);
 645                 unlink(filename);
 646         }
 647
 648         closedir(dp);
 649         return(rmdir(dirname));
 650 }