textclient/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2018 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 "textclient.h"
  16
  17 #define MAXWORDBUF SIZ
  18 #define NO_REPLY_TO     "nobody ... xxxxxx"
  19
  20 char reply_to[SIZ];
  21 char reply_subject[SIZ];
  22 char reply_references[SIZ];
  23 char reply_inreplyto[SIZ];
  24
  25 struct cittext {
  26         struct cittext *next;
  27         char text[MAXWORDBUF];
  28 };
  29
  30 void stty_ctdl(int cmd);
  31 int haschar(const char *st, int ch);
  32 int file_checksum(char *filename);
  33 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  34
  35 unsigned long *msg_arr = NULL;
  36 int msg_arr_size = 0;
  37 int num_msgs;
  38 extern char room_name[];
  39 extern char tempdir[];
  40 extern unsigned room_flags;
  41 extern unsigned room_flags2;
  42 extern int entmsg_ok;
  43 extern long highest_msg_read;
  44 extern char temp[];
  45 extern char temp2[];
  46 extern int screenwidth;
  47 extern int screenheight;
  48 extern long maxmsgnum;
  49 extern char is_mail;
  50 extern char is_aide;
  51 extern char is_room_aide;
  52 extern char fullname[];
  53 extern char axlevel;
  54 extern unsigned userflags;
  55 extern char sigcaught;
  56 extern char printcmd[];
  57 extern int rc_allow_attachments;
  58 extern int rc_display_message_numbers;
  59 extern int rc_force_mail_prompts;
  60 extern int editor_pid;
  61 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  62 int num_urls = 0;
  63 char urls[MAXURLS][SIZ];
  64 char imagecmd[SIZ];
  65 int has_images = 0;                             /* Current msg has images */
  66 struct parts *last_message_parts = NULL;        /* Parts from last msg */
  67
  68
  69
  70 void ka_sigcatch(int signum)
  71 {
  72         alarm(S_KEEPALIVE);
  73         signal(SIGALRM, ka_sigcatch);
  74         CtdlIPCNoop(ipc_for_signal_handlers);
  75 }
  76
  77
  78 /*
  79  * server keep-alive version of wait() (needed for external editor)
  80  */
  81 pid_t ka_wait(int *kstatus)
  82 {
  83         pid_t p;
  84
  85         alarm(S_KEEPALIVE);
  86         signal(SIGALRM, ka_sigcatch);
  87         do {
  88                 errno = 0;
  89                 p = wait(kstatus);
  90         } while (errno == EINTR);
  91         signal(SIGALRM, SIG_IGN);
  92         alarm(0);
  93         return (p);
  94 }
  95
  96
  97 /*
  98  * version of system() that uses ka_wait()
  99  */
 100 int ka_system(char *shc)
 101 {
 102         pid_t childpid;
 103         pid_t waitpid;
 104         int retcode;
 105
 106         childpid = fork();
 107         if (childpid < 0) {
 108                 color(BRIGHT_RED);
 109                 perror("Cannot fork");
 110                 color(DIM_WHITE);
 111                 return ((pid_t) childpid);
 112         }
 113
 114         if (childpid == 0) {
 115                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 116                 exit(127);
 117         }
 118
 119         if (childpid > 0) {
 120                 do {
 121                         waitpid = ka_wait(&retcode);
 122                 } while (waitpid != childpid);
 123                 return (retcode);
 124         }
 125
 126         return (-1);
 127 }
 128
 129
 130
 131 /*
 132  * add a newline to the buffer...
 133  */
 134 void add_newline(struct cittext *textlist)
 135 {
 136         struct cittext *ptr;
 137
 138         ptr = textlist;
 139         while (ptr->next != NULL)
 140                 ptr = ptr->next;
 141
 142         while (ptr->text[strlen(ptr->text) - 1] == 32)
 143                 ptr->text[strlen(ptr->text) - 1] = 0;
 144         /* strcat(ptr->text,"\n"); */
 145
 146         ptr->next = (struct cittext *)
 147             malloc(sizeof(struct cittext));
 148         ptr = ptr->next;
 149         ptr->next = NULL;
 150         strcpy(ptr->text, "");
 151 }
 152
 153
 154 /*
 155  * add a word to the buffer...
 156  */
 157 void add_word(struct cittext *textlist, char *wordbuf)
 158 {
 159         struct cittext *ptr;
 160
 161         ptr = textlist;
 162         while (ptr->next != NULL)
 163                 ptr = ptr->next;
 164
 165         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 166                 ptr->next = (struct cittext *)
 167                     malloc(sizeof(struct cittext));
 168                 ptr = ptr->next;
 169                 ptr->next = NULL;
 170                 strcpy(ptr->text, "");
 171         }
 172
 173         strcat(ptr->text, wordbuf);
 174         strcat(ptr->text, " ");
 175 }
 176
 177
 178 /*
 179  * begin editing of an opened file pointed to by fp
 180  */
 181 void citedit(FILE *fp)
 182 {
 183         int a, prev, finished, b, last_space;
 184         int appending = 0;
 185         struct cittext *textlist = NULL;
 186         struct cittext *ptr;
 187         char wordbuf[MAXWORDBUF];
 188         int rv = 0;
 189
 190         /* first, load the text into the buffer */
 191         fseek(fp, 0L, 0);
 192         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 193         textlist->next = NULL;
 194         strcpy(textlist->text, "");
 195
 196         strcpy(wordbuf, "");
 197         prev = (-1);
 198         while (a = getc(fp), a >= 0) {
 199                 appending = 1;
 200                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 201                         add_word(textlist, wordbuf);
 202                         strcpy(wordbuf, "");
 203                         if ((prev == 13) || (prev == 10)) {
 204                                 add_word(textlist, "\n");
 205                                 add_newline(textlist);
 206                                 add_word(textlist, "");
 207                         }
 208                 } else {
 209                         wordbuf[strlen(wordbuf) + 1] = 0;
 210                         wordbuf[strlen(wordbuf)] = a;
 211                 }
 212                 if (strlen(wordbuf) + 3 > screenwidth) {
 213                         add_word(textlist, wordbuf);
 214                         strcpy(wordbuf, "");
 215                 }
 216                 prev = a;
 217         }
 218
 219         /* get text */
 220         finished = 0;
 221         prev = (appending ? 13 : (-1));
 222         strcpy(wordbuf, "");
 223         do {
 224                 a = inkey();
 225                 if (a == 10)
 226                         a = 13;
 227                 if (a == 9)
 228                         a = 32;
 229                 if (a == 127)
 230                         a = 8;
 231
 232                 if ((a != 32) && (prev == 13)) {
 233                         add_word(textlist, "\n");
 234                         scr_printf(" ");
 235                 }
 236
 237                 if ((a == 32) && (prev == 13)) {
 238                         add_word(textlist, "\n");
 239                         add_newline(textlist);
 240                 }
 241
 242                 if (a == 8) {
 243                         if (!IsEmptyStr(wordbuf)) {
 244                                 wordbuf[strlen(wordbuf) - 1] = 0;
 245                                 scr_putc(8);
 246                                 scr_putc(32);
 247                                 scr_putc(8);
 248                         }
 249                 } else if (a == 23) {
 250                         do {
 251                                 wordbuf[strlen(wordbuf) - 1] = 0;
 252                                 scr_putc(8);
 253                                 scr_putc(32);
 254                                 scr_putc(8);
 255                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 256                 } else if (a == 13) {
 257                         scr_printf("\n");
 258                         if (IsEmptyStr(wordbuf))
 259                                 finished = 1;
 260                         else {
 261                                 for (b = 0; b < strlen(wordbuf); ++b)
 262                                         if (wordbuf[b] == 32) {
 263                                                 wordbuf[b] = 0;
 264                                                 add_word(textlist,
 265                                                          wordbuf);
 266                                                 strcpy(wordbuf,
 267                                                        &wordbuf[b + 1]);
 268                                                 b = 0;
 269                                         }
 270                                 add_word(textlist, wordbuf);
 271                                 strcpy(wordbuf, "");
 272                         }
 273                 } else {
 274                         scr_putc(a);
 275                         wordbuf[strlen(wordbuf) + 1] = 0;
 276                         wordbuf[strlen(wordbuf)] = a;
 277                 }
 278                 if ((strlen(wordbuf) + 3) > screenwidth) {
 279                         last_space = (-1);
 280                         for (b = 0; b < strlen(wordbuf); ++b)
 281                                 if (wordbuf[b] == 32)
 282                                         last_space = b;
 283                         if (last_space >= 0) {
 284                                 for (b = 0; b < strlen(wordbuf); ++b)
 285                                         if (wordbuf[b] == 32) {
 286                                                 wordbuf[b] = 0;
 287                                                 add_word(textlist,
 288                                                          wordbuf);
 289                                                 strcpy(wordbuf,
 290                                                        &wordbuf[b + 1]);
 291                                                 b = 0;
 292                                         }
 293                                 for (b = 0; b < strlen(wordbuf); ++b) {
 294                                         scr_putc(8);
 295                                         scr_putc(32);
 296                                         scr_putc(8);
 297                                 }
 298                                 scr_printf("\n%s", wordbuf);
 299                         } else {
 300                                 add_word(textlist, wordbuf);
 301                                 strcpy(wordbuf, "");
 302                                 scr_printf("\n");
 303                         }
 304                 }
 305                 prev = a;
 306         } while (finished == 0);
 307
 308         /* write the buffer back to disk */
 309         fseek(fp, 0L, 0);
 310         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 311                 fprintf(fp, "%s", ptr->text);
 312         }
 313         putc(10, fp);
 314         fflush(fp);
 315         rv = ftruncate(fileno(fp), ftell(fp));
 316         if (rv < 0)
 317                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 318
 319
 320         /* and deallocate the memory we used */
 321         while (textlist != NULL) {
 322                 ptr = textlist->next;
 323                 free(textlist);
 324                 textlist = ptr;
 325         }
 326 }
 327
 328
 329 /*
 330  * Free the struct parts
 331  */
 332 void free_parts(struct parts *p)
 333 {
 334         struct parts *a_part = p;
 335
 336         while (a_part) {
 337                 struct parts *q;
 338
 339                 q = a_part;
 340                 a_part = a_part->next;
 341                 free(q);
 342         }
 343 }
 344
 345
 346 /*
 347  * This is a mini RFC2047 decoder.
 348  * It only handles strings encoded from UTF-8 as Quoted-printable.
 349  */
 350 void mini_2047_decode(char *s) {
 351         if (!s) return;
 352
 353         char *qstart = strstr(s, "=?UTF-8?Q?");
 354         if (!qstart) return;
 355
 356         char *qend = strstr(s, "?=");
 357         if (!qend) return;
 358
 359         if (qend <= qstart) return;
 360
 361         strcpy(qstart, &qstart[10]);
 362         qend -= 10;
 363
 364         char *p = qstart;
 365         while (p < qend) {
 366
 367                 if (p[0] == '=') {
 368
 369                         char ch[3];
 370                         ch[0] = p[1];
 371                         ch[1] = p[2];
 372                         ch[2] = p[3];
 373                         int c;
 374                         sscanf(ch, "%02x", &c);
 375                         p[0] = c;
 376                         strcpy(&p[1], &p[3]);
 377                         qend -= 2;
 378                 }
 379
 380                 if (p[0] == '_') {
 381                         p[0] = ' ';
 382                 }
 383
 384                 ++p;
 385         }
 386
 387         strcpy(qend, &qend[2]);
 388 }
 389
 390 /*
 391  * Read a message from the server
 392  */
 393 int read_message(CtdlIPC *ipc,
 394         long num,   /* message number */
 395         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 396         FILE *dest) /* Destination file, NULL for screen */
 397 {
 398         char buf[SIZ];
 399         char now[256];
 400         int format_type = 0;
 401         int fr = 0;
 402         int nhdr = 0;
 403         struct ctdlipcmessage *message = NULL;
 404         int r;                          /* IPC response code */
 405         char *converted_text = NULL;
 406         char *lineptr;
 407         char *nextline;
 408         char *searchptr;
 409         int i;
 410         char ch;
 411         int linelen;
 412         int final_line_is_blank = 0;
 413
 414         has_images = 0;
 415
 416         sigcaught = 0;
 417         stty_ctdl(1);
 418
 419         strcpy(reply_to, NO_REPLY_TO);
 420         strcpy(reply_subject, "");
 421         strcpy(reply_references, "");
 422         strcpy(reply_inreplyto, "");
 423
 424         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 425         if (r / 100 != 1) {
 426                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 427                 stty_ctdl(0);
 428                 free(message->text);
 429                 free_parts(message->attachments);
 430                 free(message);
 431                 return (0);
 432         }
 433
 434         if (dest)
 435         {
 436                 fprintf(dest, "\n ");
 437         }
 438         else
 439         {
 440                 scr_printf("\n");
 441                 if (pagin != 2)
 442                 {
 443                         scr_printf(" ");
 444                 }
 445         }
 446         if (pagin == 1 && !dest)
 447         {
 448                 color(BRIGHT_CYAN);
 449         }
 450
 451         /* View headers only */
 452         if (pagin == 2) {
 453                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 454                                 message->nhdr ? "yes" : "no",
 455                                 message->author, message->type,
 456                                 message->msgid);
 457                 if (!IsEmptyStr(message->subject)) {
 458                         scr_printf("subj=%s\n", message->subject);
 459                 }
 460                 if (!IsEmptyStr(message->email)) {
 461                         scr_printf("rfca=%s\n", message->email);
 462                 }
 463                 scr_printf("room=%s\ntime=%s",
 464                         message->room,
 465                         asctime(localtime(&message->time))
 466                 );
 467                 if (!IsEmptyStr(message->recipient)) {
 468                         scr_printf("rcpt=%s\n", message->recipient);
 469                 }
 470                 if (message->attachments) {
 471                         struct parts *ptr;
 472
 473                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 474                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 475                                         ptr->name, ptr->filename, ptr->number,
 476                                         ptr->disposition, ptr->mimetype,
 477                                         ptr->length
 478                                 );
 479                         }
 480                 }
 481                 scr_printf("\n");
 482                 stty_ctdl(0);
 483                 free(message->text);
 484                 free_parts(message->attachments);
 485                 free(message);
 486                 return (0);
 487         }
 488
 489         if (rc_display_message_numbers) {
 490                 if (dest) {
 491                         fprintf(dest, "[#%s] ", message->msgid);
 492                 } else {
 493                         color(DIM_WHITE);
 494                         scr_printf("[");
 495                         color(BRIGHT_WHITE);
 496                         scr_printf("#%s", message->msgid);
 497                         color(DIM_WHITE);
 498                         scr_printf("] ");
 499                 }
 500         }
 501         if (nhdr == 1 && !is_room_aide) {
 502                 if (dest) {
 503                         fprintf(dest, " ****");
 504                 } else {
 505                         scr_printf(" ****");
 506                 }
 507         } else {
 508                 struct tm thetime;
 509                 localtime_r(&message->time, &thetime);
 510                 strftime(now, sizeof now, "%F %R", &thetime);
 511                 if (dest) {
 512                         fprintf(dest, "%s from %s ", now, message->author);
 513                         if (!IsEmptyStr(message->email)) {
 514                                 fprintf(dest, "<%s> ", message->email);
 515                         }
 516                 } else {
 517                         color(BRIGHT_CYAN);
 518                         scr_printf("%s ", now);
 519                         color(DIM_WHITE);
 520                         scr_printf("from ");
 521                         color(BRIGHT_CYAN);
 522                         scr_printf("%s ", message->author);
 523                         if (!IsEmptyStr(message->email)) {
 524                                 color(DIM_WHITE);
 525                                 scr_printf("<");
 526                                 color(BRIGHT_BLUE);
 527                                 scr_printf("%s", message->email);
 528                                         color(DIM_WHITE);
 529                                 scr_printf("> ");
 530                         }
 531                 }
 532                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 533                         if (dest) {
 534                                 fprintf(dest, "in %s> ", message->room);
 535                         } else {
 536                                 color(DIM_WHITE);
 537                                 scr_printf("in ");
 538                                 color(BRIGHT_MAGENTA);
 539                                 scr_printf("%s> ", message->room);
 540                         }
 541                 }
 542                 if (!IsEmptyStr(message->recipient)) {
 543                         if (dest) {
 544                                 fprintf(dest, "to %s ", message->recipient);
 545                         } else {
 546                                 color(DIM_WHITE);
 547                                 scr_printf("to ");
 548                                 color(BRIGHT_CYAN);
 549                                 scr_printf("%s ", message->recipient);
 550                         }
 551                 }
 552         }
 553
 554         if (dest) {
 555                 fprintf(dest, "\n");
 556         } else {
 557                 scr_printf("\n");
 558         }
 559
 560         /* Set the reply-to address to an Internet e-mail address if possible
 561          */
 562         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 563                 if (!IsEmptyStr(message->author)) {
 564                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 565                 }
 566                 else {
 567                         safestrncpy(reply_to, message->email, sizeof reply_to);
 568                 }
 569         }
 570
 571         /* But if we can't do that, set it to a Citadel address.
 572          */
 573         if (!strcmp(reply_to, NO_REPLY_TO)) {
 574                 safestrncpy(reply_to, message->author, sizeof(reply_to));
 575         }
 576
 577         if (message->msgid != NULL) {
 578                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 579         }
 580
 581         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 582                 safestrncpy(reply_references, message->references, sizeof reply_references);
 583         }
 584
 585         if (message->subject != NULL) {
 586                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 587                 if (!IsEmptyStr(message->subject)) {
 588                         if (dest) {
 589                                 fprintf(dest, "Subject: %s\n", message->subject);
 590                         } else {
 591                                 color(DIM_WHITE);
 592                                 scr_printf("Subject: ");
 593                                 color(BRIGHT_CYAN);
 594                                 mini_2047_decode(message->subject);
 595                                 scr_printf("%s\n", message->subject);
 596                         }
 597                 }
 598         }
 599
 600         if (pagin == 1 && !dest) {
 601                 color(BRIGHT_WHITE);
 602         }
 603
 604         /******* end of header output, start of message text output *******/
 605
 606         /*
 607          * Convert HTML to plain text, formatting for the actual width
 608          * of the client screen.
 609          */
 610         if (!strcasecmp(message->content_type, "text/html")) {
 611                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 612                 if (converted_text != NULL) {
 613                         free(message->text);
 614                         message->text = converted_text;
 615                         format_type = 1;
 616                 }
 617         }
 618
 619         /* Text/plain is a different type */
 620         if (!strcasecmp(message->content_type, "text/plain")) {
 621                 format_type = 1;
 622         }
 623
 624         /* Render text/x-markdown as plain text */
 625         if (!strcasecmp(message->content_type, "text/x-markdown")) {
 626                 format_type = 1;
 627         }
 628
 629         /* Extract URL's */
 630         static char *urlprefixes[] = {
 631                 "http://",
 632                 "https://",
 633                 "ftp://"
 634         };
 635         int p = 0;
 636         num_urls = 0;   /* Start with a clean slate */
 637         for (p=0; p<(sizeof urlprefixes / sizeof(char *)); ++p) {
 638                 searchptr = message->text;
 639                 while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 640                         searchptr = strstr(searchptr, urlprefixes[p]);
 641                         if (searchptr != NULL) {
 642                                 safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 643                                 for (i = 0; i < strlen(urls[num_urls]); i++) {
 644                                         ch = urls[num_urls][i];
 645                                         if (ch == '>' || ch == '\"' || ch == ')' ||
 646                                             ch == ' ' || ch == '\n') {
 647                                                 urls[num_urls][i] = 0;
 648                                                 break;
 649                                         }
 650                                 }
 651                                 num_urls++;
 652                                 ++searchptr;
 653                         }
 654                 }
 655         }
 656
 657         /*
 658          * Here we go
 659          */
 660         if (format_type == 0) {
 661                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 662         } else {
 663                 /* renderer for text/plain */
 664
 665                 lineptr = message->text;
 666
 667                 do {
 668                         nextline = strchr(lineptr, '\n');
 669                         if (nextline != NULL) {
 670                                 *nextline = 0;
 671                                 ++nextline;
 672                                 if (*nextline == 0) nextline = NULL;
 673                         }
 674
 675                         if (sigcaught == 0) {
 676                                 linelen = strlen(lineptr);
 677                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 678                                         lineptr[--linelen] = 0;
 679                                 }
 680                                 if (dest) {
 681                                         fprintf(dest, "%s\n", lineptr);
 682                                 } else {
 683                                         scr_printf("%s\n", lineptr);
 684                                 }
 685                         }
 686                         if (lineptr[0] == 0) final_line_is_blank = 1;
 687                         else final_line_is_blank = 0;
 688                         lineptr = nextline;
 689                 } while (nextline);
 690                 fr = sigcaught;
 691         }
 692         if (!final_line_is_blank) {
 693                 if (dest) {
 694                         fprintf(dest, "\n");
 695                 }
 696                 else {
 697                         scr_printf("\n");
 698                         fr = sigcaught;
 699                 }
 700         }
 701
 702         /* Enumerate any attachments */
 703         if ( (pagin == 1) && (message->attachments) ) {
 704                 struct parts *ptr;
 705
 706                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 707                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 708                            || (!strcasecmp(ptr->disposition, "inline"))
 709                            || (!strcasecmp(ptr->disposition, ""))
 710                         ) {
 711                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 712                                    && (!IsEmptyStr(ptr->mimetype))
 713                                 ) {
 714                                         color(DIM_WHITE);
 715                                         scr_printf("Part ");
 716                                         color(BRIGHT_MAGENTA);
 717                                         scr_printf("%s", ptr->number);
 718                                         color(DIM_WHITE);
 719                                         scr_printf(": ");
 720                                         color(BRIGHT_CYAN);
 721                                         scr_printf("%s", ptr->filename);
 722                                         color(DIM_WHITE);
 723                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 724                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 725                                                 has_images++;
 726                                         }
 727                                 }
 728                         }
 729                 }
 730         }
 731
 732         /* Save the attachments info for later */
 733         last_message_parts = message->attachments;
 734
 735         /* Now we're done */
 736         free(message->text);
 737         free(message);
 738
 739         if (pagin == 1 && !dest)
 740                 color(DIM_WHITE);
 741         stty_ctdl(0);
 742         return (fr);
 743 }
 744
 745 /*
 746  * replace string function for the built-in editor
 747  */
 748 void replace_string(char *filename, long int startpos)
 749 {
 750         char buf[512];
 751         char srch_str[128];
 752         char rplc_str[128];
 753         FILE *fp;
 754         int a;
 755         long rpos, wpos;
 756         char *ptr;
 757         int substitutions = 0;
 758         long msglen = 0L;
 759         int rv;
 760
 761         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str)-1) );
 762         if (IsEmptyStr(srch_str)) {
 763                 return;
 764         }
 765
 766         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str)-1) );
 767
 768         fp = fopen(filename, "r+");
 769         if (fp == NULL) {
 770                 return;
 771         }
 772
 773         wpos = startpos;
 774         fseek(fp, startpos, 0);
 775         strcpy(buf, "");
 776         while (a = getc(fp), a > 0) {
 777                 ++msglen;
 778                 buf[strlen(buf) + 1] = 0;
 779                 buf[strlen(buf)] = a;
 780                 if (strlen(buf) >= strlen(srch_str)) {
 781                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 782                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 783                                 strcpy(ptr, rplc_str);
 784                                 ++substitutions;
 785                         }
 786                 }
 787                 if (strlen(buf) > 384) {
 788                         rpos = ftell(fp);
 789                         fseek(fp, wpos, 0);
 790                         rv = fwrite((char *) buf, 128, 1, fp);
 791                         if (rv < 0) {
 792                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 793                                 break; /*whoopsi! */
 794                         }
 795                         strcpy(buf, &buf[128]);
 796                         wpos = ftell(fp);
 797                         fseek(fp, rpos, 0);
 798                 }
 799         }
 800         fseek(fp, wpos, 0);
 801         if (!IsEmptyStr(buf)) {
 802                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 803         }
 804         wpos = ftell(fp);
 805         fclose(fp);
 806         rv = truncate(filename, wpos);
 807         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 808 }
 809
 810 /*
 811  * Function to begin composing a new message
 812  */
 813 int client_make_message(CtdlIPC *ipc,
 814                         char *filename,         /* temporary file name */
 815                         char *recipient,        /* NULL if it's not mail */
 816                         int is_anonymous,
 817                         int format_type,
 818                         int mode,
 819                         char *subject,          /* buffer to store subject line */
 820                         int subject_required
 821 ) {
 822         FILE *fp;
 823         int a, b, e_ex_code;
 824         long beg;
 825         char datestr[256];
 826         char header[SIZ];
 827         int cksum = 0;
 828
 829         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 830                 scr_printf("*** No editor available; using built-in editor.\n");
 831                 mode = 0;
 832         }
 833
 834         struct tm thetime;
 835         time_t now = time(NULL);
 836         localtime_r(&now, &thetime);
 837         strftime(datestr, sizeof datestr, "%F %R", &thetime);
 838         header[0] = 0;
 839
 840         if (room_flags & QR_ANONONLY && !recipient) {
 841                 snprintf(header, sizeof header, " ****");
 842         }
 843         else {
 844                 snprintf(header, sizeof header,
 845                         " %s from %s",
 846                         datestr,
 847                         (is_anonymous ? "[anonymous]" : fullname)
 848                         );
 849                 if (!IsEmptyStr(recipient)) {
 850                         size_t tmp = strlen(header);
 851                         snprintf(&header[tmp], sizeof header - tmp,
 852                                 " to %s", recipient);
 853                 }
 854         }
 855         scr_printf("%s\n", header);
 856         if (subject != NULL) if (!IsEmptyStr(subject)) {
 857                 scr_printf("Subject: %s\n", subject);
 858         }
 859
 860         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 861                 newprompt("Subject: ", subject, 70);
 862         }
 863
 864         if (mode == 1) {
 865                 scr_printf("(Press ctrl-d when finished)\n");
 866         }
 867
 868         if (mode == 0) {
 869                 fp = fopen(filename, "r");
 870                 if (fp != NULL) {
 871                         fmout(screenwidth, fp, NULL, NULL, 0);
 872                         beg = ftell(fp);
 873                         if (beg < 0)
 874                                 scr_printf("failed to get stream position %s\n",
 875                                            strerror(errno));
 876                         fclose(fp);
 877                 } else {
 878                         fp = fopen(filename, "w");
 879                         if (fp == NULL) {
 880                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 881                                         filename, strerror(errno)
 882                                 );
 883                         return(1);
 884                         }
 885                         fclose(fp);
 886                 }
 887         }
 888
 889 ME1:    switch (mode) {
 890
 891         case 0:
 892                 fp = fopen(filename, "r+");
 893                 if (fp == NULL) {
 894                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 895                                 filename, strerror(errno)
 896                         );
 897                         return(1);
 898                 }
 899                 citedit(fp);
 900                 fclose(fp);
 901                 goto MECR;
 902
 903         case 1:
 904                 fp = fopen(filename, "a");
 905                 if (fp == NULL) {
 906                         scr_printf("*** Error opening temp file!\n"
 907                                 "    %s: %s\n",
 908                                 filename, strerror(errno));
 909                         return(1);
 910                 }
 911                 do {
 912                         a = inkey();
 913                         if (a == 255)
 914                                 a = 32;
 915                         if (a == 13)
 916                                 a = 10;
 917                         if (a != 4) {
 918                                 putc(a, fp);
 919                                 scr_putc(a);
 920                         }
 921                         if (a == 10)
 922                                 scr_putc(10);
 923                 } while (a != 4);
 924                 fclose(fp);
 925                 break;
 926
 927         case 2:
 928         default:        /* allow 2+ modes */
 929                 e_ex_code = 1;  /* start with a failed exit code */
 930                 stty_ctdl(SB_RESTORE);
 931                 editor_pid = fork();
 932                 cksum = file_checksum(filename);
 933                 if (editor_pid == 0) {
 934                         char tmp[SIZ];
 935
 936                         chmod(filename, 0600);
 937                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 938                         putenv(tmp);
 939                         execlp(editor_path, editor_path, filename, NULL);
 940                         exit(1);
 941                 }
 942                 if (editor_pid > 0)
 943                         do {
 944                                 e_ex_code = 0;
 945                                 b = ka_wait(&e_ex_code);
 946                         } while ((b != editor_pid) && (b >= 0));
 947                 editor_pid = (-1);
 948                 stty_ctdl(0);
 949                 break;
 950         }
 951
 952 MECR:   if (mode >= 2) {
 953                 if (file_checksum(filename) == cksum) {
 954                         scr_printf("*** Aborted message.\n");
 955                         e_ex_code = 1;
 956                 }
 957                 if (e_ex_code == 0) {
 958                         goto MEFIN;
 959                 }
 960                 goto MEABT2;
 961         }
 962
 963         b = keymenu("Entry command (? for options)",
 964                 "<A>bort|"
 965                 "<C>ontinue|"
 966                 "<S>ave message|"
 967                 "<P>rint formatted|"
 968                 "add s<U>bject|"
 969                 "<R>eplace string|"
 970                 "<H>old message"
 971         );
 972
 973         if (b == 'a') goto MEABT;
 974         if (b == 'c') goto ME1;
 975         if (b == 's') goto MEFIN;
 976         if (b == 'p') {
 977                 scr_printf(" %s from %s", datestr, fullname);
 978                 if (!IsEmptyStr(recipient)) {
 979                         scr_printf(" to %s", recipient);
 980                 }
 981                 scr_printf("\n");
 982                 if (subject != NULL) if (!IsEmptyStr(subject)) {
 983                         scr_printf("Subject: %s\n", subject);
 984                 }
 985                 fp = fopen(filename, "r");
 986                 if (fp != NULL) {
 987                         fmout(screenwidth, fp, NULL, NULL, 0);
 988                         beg = ftell(fp);
 989                         if (beg < 0)
 990                                 scr_printf("failed to get stream position %s\n",
 991                                            strerror(errno));
 992                         fclose(fp);
 993                 }
 994                 goto MECR;
 995         }
 996         if (b == 'r') {
 997                 replace_string(filename, 0L);
 998                 goto MECR;
 999         }
1000         if (b == 'h') {
1001                 return (2);
1002         }
1003         if (b == 'u') {
1004                 if (subject != NULL) {
1005                         newprompt("Subject: ", subject, 70);
1006                 }
1007                 goto MECR;
1008         }
1009
1010 MEFIN:  return (0);
1011
1012 MEABT:  scr_printf("Are you sure? ");
1013         if (yesno() == 0) {
1014                 goto ME1;
1015         }
1016 MEABT2: unlink(filename);
1017         return (2);
1018 }
1019
1020
1021 /*
1022  * Make sure there's room in msg_arr[] for at least one more.
1023  */
1024 void check_msg_arr_size(void) {
1025         if ((num_msgs + 1) > msg_arr_size) {
1026                 msg_arr_size += 512;
1027                 msg_arr = realloc(msg_arr,
1028                         ((sizeof(long)) * msg_arr_size) );
1029         }
1030 }
1031
1032
1033 /*
1034  * break_big_lines()  -  break up lines that are >1024 characters
1035  *                       otherwise the server will truncate
1036  */
1037 void break_big_lines(char *msg) {
1038         char *ptr;
1039         char *break_here;
1040
1041         if (msg == NULL) {
1042                 return;
1043         }
1044
1045         ptr = msg;
1046         while (strlen(ptr) > 1000) {
1047                 break_here = strchr(&ptr[900], ' ');
1048                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1049                         break_here = &ptr[999];
1050                 }
1051                 *break_here = '\n';
1052                 ptr = break_here++;
1053         }
1054 }
1055
1056
1057 /*
1058  * entmsg()  -  edit and create a message
1059  *              returns 0 if message was saved
1060  */
1061 int entmsg(CtdlIPC *ipc,
1062                 int is_reply,   /* nonzero if this was a <R>eply command */
1063                 int c,          /* mode */
1064                 int masquerade  /* prompt for a non-default display name? */
1065 ) {
1066         char buf[SIZ];
1067         int a, b;
1068         int need_recp = 0;
1069         int mode;
1070         long highmsg = 0L;
1071         FILE *fp;
1072         char subject[SIZ];
1073         struct ctdlipcmessage message;
1074         unsigned long *msgarr = NULL;
1075         int r;                  /* IPC response code */
1076         int subject_required = 0;
1077
1078         if (!entmsg_ok) {
1079                 scr_printf("You may not enter messages in this type of room.\n");
1080                 return(1);
1081         }
1082
1083         if (c > 0) {
1084                 mode = 1;
1085         }
1086         else {
1087                 mode = 0;
1088         }
1089
1090         strcpy(subject, "");
1091
1092         /*
1093          * First, check to see if we have permission to enter a message in
1094          * this room.  The server will return an error code if we can't.
1095          */
1096         strcpy(message.recipient, "");
1097         strcpy(message.author, "");
1098         strcpy(message.subject, "");
1099         strcpy(message.references, "");
1100         message.text = "";              /* point to "", changes later */
1101         message.anonymous = 0;
1102         message.type = mode;
1103
1104         if (masquerade) {
1105                 newprompt("Display name for this message: ", message.author, 40);
1106         }
1107
1108         if (is_reply) {
1109
1110                 if (!IsEmptyStr(reply_subject)) {
1111                         if (!strncasecmp(reply_subject,
1112                            "Re: ", 3)) {
1113                                 strcpy(message.subject, reply_subject);
1114                         }
1115                         else {
1116                                 snprintf(message.subject,
1117                                         sizeof message.subject,
1118                                         "Re: %s",
1119                                         reply_subject);
1120                         }
1121                 }
1122
1123                 /* Trim down excessively long lists of thread references.  We eliminate the
1124                  * second one in the list so that the thread root remains intact.
1125                  */
1126                 int rrtok = num_tokens(reply_references, '|');
1127                 int rrlen = strlen(reply_references);
1128                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1129                         remove_token(reply_references, 1, '|');
1130                 }
1131
1132                 snprintf(message.references, sizeof message.references, "%s%s%s",
1133                         reply_references,
1134                         (IsEmptyStr(reply_references) ? "" : "|"),
1135                         reply_inreplyto
1136                 );
1137         }
1138
1139         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1140
1141         if (r / 100 != 2 && r / 10 != 57) {
1142                 scr_printf("%s\n", buf);
1143                 return (1);
1144         }
1145
1146         /* Error code 570 is special.  It means that we CAN enter a message
1147          * in this room, but a recipient needs to be specified.
1148          */
1149         need_recp = 0;
1150         if (r / 10 == 57) {
1151                 need_recp = 1;
1152         }
1153
1154         /* If the user is a dumbass, tell them how to type. */
1155         if ((userflags & US_EXPERT) == 0) {
1156                 scr_printf("Entering message.  Word wrap will give you soft linebreaks.  Pressing the\n");
1157                 scr_printf("'enter' key will give you a hard linebreak and an indent.  Press 'enter' twice\n");
1158                 scr_printf("when finished.\n");
1159         }
1160
1161         /* Handle the selection of a recipient, if necessary. */
1162         strcpy(buf, "");
1163         if (need_recp == 1) {
1164                 if (axlevel >= AxProbU) {
1165                         if (is_reply) {
1166                                 strcpy(buf, reply_to);
1167                         } else {
1168                                 newprompt("Enter recipient: ", buf, SIZ-100);
1169                                 if (IsEmptyStr(buf)) {
1170                                         return (1);
1171                                 }
1172                         }
1173                 } else
1174                         strcpy(buf, "sysop");
1175         }
1176         strcpy(message.recipient, buf);
1177
1178         if (room_flags & QR_ANONOPT) {
1179                 scr_printf("Anonymous (Y/N)? ");
1180                 if (yesno() == 1)
1181                         message.anonymous = 1;
1182         }
1183
1184         /* If it's mail, we've got to check the validity of the recipient... */
1185         if (!IsEmptyStr(message.recipient)) {
1186                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1187                 if (r / 100 != 2) {
1188                         scr_printf("%s\n", buf);
1189                         return (1);
1190                 }
1191         }
1192
1193         /* Learn the number of the newest message in in the room, so we can
1194          * tell upon saving whether someone else has posted too.
1195          */
1196         num_msgs = 0;
1197         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1198         if (r / 100 != 1) {
1199                 scr_printf("%s\n", buf);
1200         } else {
1201                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1202                         ;
1203         }
1204
1205         /* Now compose the message... */
1206         if (client_make_message(ipc, temp, message.recipient,
1207            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1208             if (msgarr) free(msgarr);
1209                 return (2);
1210         }
1211
1212         /* Reopen the temp file that was created, so we can send it */
1213         fp = fopen(temp, "r");
1214
1215         if (!fp || !(message.text = load_message_from_file(fp))) {
1216                 scr_printf("*** Internal error while trying to save message!\n"
1217                         "%s: %s\n",
1218                         temp, strerror(errno));
1219                 unlink(temp);
1220                 return(errno);
1221         }
1222
1223         if (fp) fclose(fp);
1224
1225         /* Break lines that are >1024 characters, otherwise the server
1226          * will truncate them.
1227          */
1228         break_big_lines(message.text);
1229
1230         /* Transmit message to the server */
1231         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1232         if (r / 100 != 4) {
1233                 scr_printf("%s\n", buf);
1234                 return (1);
1235         }
1236
1237         /* Yes, unlink it now, so it doesn't stick around if we crash */
1238         unlink(temp);
1239
1240         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1241
1242         if (msgarr) free(msgarr);
1243         msgarr = NULL;
1244         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1245         if (r / 100 != 1) {
1246                 scr_printf("%s\n", buf);
1247         } else {
1248                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1249                         ;
1250         }
1251
1252         /* get new highest message number in room to set lrp for goto... */
1253         maxmsgnum = msgarr[num_msgs - 1];
1254
1255         /* now see if anyone else has posted in here */
1256         b = (-1);
1257         for (a = 0; a < num_msgs; ++a) {
1258                 if (msgarr[a] > highmsg) {
1259                         ++b;
1260                 }
1261         }
1262         if (msgarr) free(msgarr);
1263         msgarr = NULL;
1264
1265         /* In the Mail> room, this algorithm always counts one message
1266          * higher than in public rooms, so we decrement it by one.
1267          */
1268         if (need_recp) {
1269                 --b;
1270         }
1271
1272         if (b == 1) {
1273                 scr_printf("*** 1 additional message has been entered "
1274                         "in this room by another user.\n");
1275         }
1276         else if (b > 1) {
1277                 scr_printf("*** %d additional messages have been entered "
1278                         "in this room by other users.\n", b);
1279         }
1280     free(message.text);
1281
1282         return(0);
1283 }
1284
1285 /*
1286  * Do editing on a quoted file
1287  */
1288 void process_quote(void)
1289 {
1290         FILE *qfile, *tfile;
1291         char buf[128];
1292         int line, qstart, qend;
1293
1294         /* Unlink the second temp file as soon as it's opened, so it'll get
1295          * deleted even if the program dies
1296          */
1297         qfile = fopen(temp2, "r");
1298         unlink(temp2);
1299
1300         /* Display the quotable text with line numbers added */
1301         line = 0;
1302         if (fgets(buf, 128, qfile) == NULL) {
1303                 /* we're skipping a line here */
1304         }
1305         while (fgets(buf, 128, qfile) != NULL) {
1306                 scr_printf("%3d %s", ++line, buf);
1307         }
1308
1309         qstart = intprompt("Begin quoting at", 1, 1, line);
1310         qend = intprompt("  End quoting at", line, qstart, line);
1311
1312         rewind(qfile);
1313         line = 0;
1314         if (fgets(buf, 128, qfile) == NULL) {
1315                 /* we're skipping a line here */
1316         }
1317         tfile = fopen(temp, "w");
1318         while (fgets(buf, 128, qfile) != NULL) {
1319                 if ((++line >= qstart) && (line <= qend))
1320                         fprintf(tfile, " >%s", buf);
1321         }
1322         fprintf(tfile, " \n");
1323         fclose(qfile);
1324         fclose(tfile);
1325         chmod(temp, 0666);
1326 }
1327
1328
1329
1330 /*
1331  * List the URL's which were embedded in the previous message
1332  */
1333 void list_urls(CtdlIPC *ipc)
1334 {
1335         int i;
1336         char cmd[SIZ];
1337         int rv;
1338
1339         if (num_urls == 0) {
1340                 scr_printf("There were no URL's in the previous message.\n\n");
1341                 return;
1342         }
1343
1344         for (i = 0; i < num_urls; ++i) {
1345                 scr_printf("%3d %s\n", i + 1, urls[i]);
1346         }
1347
1348         if ((i = num_urls) != 1)
1349                 i = intprompt("Display which one", 1, 1, num_urls);
1350
1351         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1352         rv = system(cmd);
1353         if (rv != 0)
1354                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1355         scr_printf("\n");
1356 }
1357
1358
1359 /*
1360  * Run image viewer in background
1361  */
1362 int do_image_view(const char *filename)
1363 {
1364         char cmd[SIZ];
1365         pid_t childpid;
1366
1367         snprintf(cmd, sizeof cmd, imagecmd, filename);
1368         childpid = fork();
1369         if (childpid < 0) {
1370                 unlink(filename);
1371                 return childpid;
1372         }
1373
1374         if (childpid == 0) {
1375                 int retcode;
1376                 pid_t grandchildpid;
1377
1378                 grandchildpid = fork();
1379                 if (grandchildpid < 0) {
1380                         return grandchildpid;
1381                 }
1382
1383                 if (grandchildpid == 0) {
1384                         int nullfd;
1385                         int outfd = -1;
1386                         int errfd = -1;
1387
1388                         nullfd = open("/dev/null", O_WRONLY);
1389                         if (nullfd > -1) {
1390                                 dup2(1, outfd);
1391                                 dup2(2, errfd);
1392                                 dup2(nullfd, 1);
1393                                 dup2(nullfd, 2);
1394                         }
1395                         retcode = system(cmd);
1396                         if (nullfd > -1) {
1397                                 dup2(outfd, 1);
1398                                 dup2(errfd, 2);
1399                                 close(nullfd);
1400                         }
1401                         unlink(filename);
1402                         exit(retcode);
1403                 }
1404
1405                 if (grandchildpid > 0) {
1406                         exit(0);
1407                 }
1408         }
1409
1410         if (childpid > 0) {
1411                 int retcode;
1412
1413                 waitpid(childpid, &retcode, 0);
1414                 return retcode;
1415         }
1416
1417         return -1;
1418 }
1419
1420
1421 /*
1422  * View an image attached to a message
1423  */
1424 void image_view(CtdlIPC *ipc, unsigned long msg)
1425 {
1426         struct parts *ptr = last_message_parts;
1427         char part[SIZ];
1428         int found = 0;
1429
1430         /* Run through available parts */
1431         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1432                 if ((!strcasecmp(ptr->disposition, "attachment")
1433                    || !strcasecmp(ptr->disposition, "inline"))
1434                    && !strncmp(ptr->mimetype, "image/", 6)) {
1435                         found++;
1436                         if (found == 1) {
1437                                 strcpy(part, ptr->number);
1438                         }
1439                 }
1440         }
1441
1442         while (found > 0) {
1443                 if (found > 1)
1444                         strprompt("View which part (0 when done)", part, SIZ-1);
1445                 found = -found;
1446                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1447                         if ((!strcasecmp(ptr->disposition, "attachment")
1448                            || !strcasecmp(ptr->disposition, "inline"))
1449                            && !strncmp(ptr->mimetype, "image/", 6)
1450                            && !strcasecmp(ptr->number, part)) {
1451                                 char tmp[PATH_MAX];
1452                                 char buf[SIZ];
1453                                 void *file = NULL; /* The downloaded file */
1454                                 int r;
1455
1456                                 /* view image */
1457                                 found = -found;
1458                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1459                                 if (r / 100 != 2) {
1460                                         scr_printf("%s\n", buf);
1461                                 } else {
1462                                         size_t len;
1463
1464                                         len = (size_t)extract_long(buf, 0);
1465                                         progress(ipc, len, len);
1466                                         scr_flush();
1467                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1468                                         strcat(tmp, ptr->filename);
1469                                         save_buffer(file, len, tmp);
1470                                         free(file);
1471                                         do_image_view(tmp);
1472                                 }
1473                                 break;
1474                         }
1475                 }
1476                 if (found == 1)
1477                         break;
1478         }
1479 }
1480
1481
1482 /*
1483  * Read the messages in the current room
1484  */
1485 void readmsgs(CtdlIPC *ipc,
1486         enum MessageList c,             /* see listing in citadel_ipc.h */
1487         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1488         int q           /* Number of msgs to read (if c==3) */
1489 ) {
1490         int a, e, f, g, start;
1491         int savedpos;
1492         int hold_sw = 0;
1493         char arcflag = 0;
1494         char quotflag = 0;
1495         int hold_color = 0;
1496         char prtfile[PATH_MAX];
1497         char pagin;
1498         char cmd[SIZ];
1499         char targ[ROOMNAMELEN];
1500         char filename[PATH_MAX];
1501         char save_to[PATH_MAX];
1502         void *attachment = NULL;        /* Downloaded attachment */
1503         FILE *dest = NULL;              /* Alternate destination other than screen */
1504         int r;                          /* IPC response code */
1505         static int att_seq = 0;         /* Attachment download sequence number */
1506         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1507
1508         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1509
1510         if (msg_arr) {
1511                 free(msg_arr);
1512                 msg_arr = NULL;
1513         }
1514         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1515         if (r / 100 != 1) {
1516                 scr_printf("%s\n", cmd);
1517         } else {
1518                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1519                         ;
1520         }
1521
1522         if (num_msgs == 0) {    /* TODO look at this later */
1523                 if (c == LastMessages) return;
1524                 scr_printf("*** There are no ");
1525                 if (c == NewMessages) scr_printf("new ");
1526                 if (c == OldMessages) scr_printf("old ");
1527                 scr_printf("messages in this room.\n");
1528                 return;
1529         }
1530
1531         /* this loop cycles through each message... */
1532         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1533         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1534                 while (msg_arr[a] == 0L) {
1535                         a = a + rdir;
1536                         if ((a == num_msgs) || (a == (-1)))
1537                                 return;
1538                 }
1539
1540 RAGAIN:         pagin = ((arcflag == 0)
1541                          && (quotflag == 0)
1542                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1543
1544                 /* If we're doing a quote, set the screenwidth to 72 */
1545                 if (quotflag) {
1546                         hold_sw = screenwidth;
1547                         screenwidth = 72;
1548                 }
1549
1550                 /* If printing or archiving, set the screenwidth to 80 */
1551                 if (arcflag) {
1552                         hold_sw = screenwidth;
1553                         screenwidth = 80;
1554                 }
1555
1556                 /* clear parts list */
1557                 free_parts(last_message_parts);
1558                 last_message_parts = NULL;
1559
1560                 /* now read the message... */
1561                 e = read_message(ipc, msg_arr[a], pagin, dest);
1562
1563                 /* ...and set the screenwidth back if we have to */
1564                 if ((quotflag) || (arcflag)) {
1565                         screenwidth = hold_sw;
1566                 }
1567 RMSGREAD:
1568                 highest_msg_read = msg_arr[a];
1569                 if (quotflag) {
1570                         fclose(dest);
1571                         dest = NULL;
1572                         quotflag = 0;
1573                         enable_color = hold_color;
1574                         process_quote();
1575                         e = 'r';
1576                         goto DONE_QUOTING;
1577                 }
1578                 if (arcflag) {
1579                         fclose(dest);
1580                         dest = NULL;
1581                         arcflag = 0;
1582                         enable_color = hold_color;
1583                         f = fork();
1584                         if (f == 0) {
1585                                 if (freopen(prtfile, "r", stdin) == NULL) {
1586                                         /* we probably should handle the error condition here */
1587                                 }
1588                                 stty_ctdl(SB_RESTORE);
1589                                 ka_system(printcmd);
1590                                 stty_ctdl(SB_NO_INTR);
1591                                 unlink(prtfile);
1592                                 exit(0);
1593                         }
1594                         if (f > 0)
1595                                 do {
1596                                         g = wait(NULL);
1597                                 } while ((g != f) && (g >= 0));
1598                         scr_printf("Message printed.\n");
1599                 }
1600                 if (e == SIGQUIT)
1601                         return;
1602                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1603                         && (((room_flags & QR_MAILBOX) == 0)
1604                         || (rc_force_mail_prompts == 0))) {
1605                         e = 'n';
1606                 } else {
1607                         color(DIM_WHITE);
1608                         scr_printf("(");
1609                         color(BRIGHT_WHITE);
1610                         scr_printf("%d", num_msgs - a - 1);
1611                         color(DIM_WHITE);
1612                         scr_printf(") ");
1613
1614                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1615                         if (rc_url_cmd[0] && num_urls)
1616                                 keyopt("<U>RLview ");
1617                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1618                                 keyopt("<I>mages ");
1619                         keyopt("<?>help -> ");
1620
1621                         do {
1622                                 e = (inkey() & 127);
1623                                 e = tolower(e);
1624 /* return key same as <N> */ if (e == 10)
1625                                         e = 'n';
1626 /* space key same as <N> */ if (e == 32)
1627                                         e = 'n';
1628 /* del/move for aides only */
1629                                     if (  (!is_room_aide)
1630                                        && ((room_flags & QR_MAILBOX) == 0)
1631                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1632                                        ) {
1633                                         if ((e == 'd') || (e == 'm'))
1634                                                 e = 0;
1635                                 }
1636 /* print only if available */
1637                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1638                                         e = 0;
1639 /* can't file if not allowed */
1640                                     if ((e == 'f')
1641                                         && (rc_allow_attachments == 0))
1642                                         e = 0;
1643 /* link only if browser avail*/
1644                                     if ((e == 'u')
1645                                         && (IsEmptyStr(rc_url_cmd)))
1646                                         e = 0;
1647                                 if ((e == 'i')
1648                                         && (IsEmptyStr(imagecmd) || !has_images))
1649                                         e = 0;
1650                         } while ((e != 'a') && (e != 'n') && (e != 's')
1651                                  && (e != 'd') && (e != 'm') && (e != 'p')
1652                                  && (e != 'q') && (e != 'b') && (e != 'h')
1653                                  && (e != 'r') && (e != 'f') && (e != '?')
1654                                  && (e != 'u') && (e != 'c') && (e != 'y')
1655                                  && (e != 'i') && (e != 'o') );
1656                         switch (e) {
1657                         case 's':
1658                                 scr_printf("Stop");
1659                                 break;
1660                         case 'a':
1661                                 scr_printf("Again");
1662                                 break;
1663                         case 'd':
1664                                 scr_printf("Delete");
1665                                 break;
1666                         case 'm':
1667                                 scr_printf("Move");
1668                                 break;
1669                         case 'c':
1670                                 scr_printf("Copy");
1671                                 break;
1672                         case 'n':
1673                                 scr_printf("Next");
1674                                 break;
1675                         case 'p':
1676                                 scr_printf("Print");
1677                                 break;
1678                         case 'q':
1679                                 scr_printf("reply Quoted");
1680                                 break;
1681                         case 'b':
1682                                 scr_printf("Back");
1683                                 break;
1684                         case 'h':
1685                                 scr_printf("Header");
1686                                 break;
1687                         case 'r':
1688                                 scr_printf("Reply");
1689                                 break;
1690                         case 'o':
1691                                 scr_printf("Open attachments");
1692                                 break;
1693                         case 'f':
1694                                 scr_printf("File");
1695                                 break;
1696                         case 'u':
1697                                 scr_printf("URL's");
1698                                 break;
1699                         case 'y':
1700                                 scr_printf("mY next");
1701                                 break;
1702                         case 'i':
1703                                 break;
1704                         case '?':
1705                                 scr_printf("? <help>");
1706                                 break;
1707                         }
1708                         if (userflags & US_DISAPPEAR || e == 'i')
1709                                 scr_printf("\r%79s\r", "");
1710                         else
1711                                 scr_printf("\n");
1712                 }
1713 DONE_QUOTING:   switch (e) {
1714                 case '?':
1715                         scr_printf("Options available here:\n"
1716                                 " ?  Help (prints this message)\n"
1717                                 " S  Stop reading immediately\n"
1718                                 " A  Again (repeats last message)\n"
1719                                 " N  Next (continue with next message)\n"
1720                                 " Y  My Next (continue with next message you authored)\n"
1721                                 " B  Back (go back to previous message)\n");
1722                         if (  (is_room_aide)
1723                            || (room_flags & QR_MAILBOX)
1724                            || (room_flags2 & QR2_COLLABDEL)
1725                         ) {
1726                                 scr_printf(" D  Delete this message\n"
1727                                         " M  Move message to another room\n");
1728                         }
1729                         scr_printf(" C  Copy message to another room\n");
1730                         if (!IsEmptyStr(printcmd))
1731                                 scr_printf(" P  Print this message\n");
1732                         scr_printf(
1733                                 " Q  Reply to this message, quoting portions of it\n"
1734                                 " H  Headers (display message headers only)\n");
1735                         if (is_mail)
1736                                 scr_printf(" R  Reply to this message\n");
1737                         if (rc_allow_attachments) {
1738                                 scr_printf(" O  (Open attachments)\n");
1739                                 scr_printf(" F  (save attachments to a File)\n");
1740                         }
1741                         if (!IsEmptyStr(rc_url_cmd))
1742                                 scr_printf(" U  (list URL's for display)\n");
1743                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1744                                 scr_printf(" I  Image viewer\n");
1745                         scr_printf("\n");
1746                         goto RMSGREAD;
1747                 case 'p':
1748                         scr_flush();
1749                         dest = fopen(prtfile, "w");
1750                         arcflag = 1;
1751                         hold_color = enable_color;
1752                         enable_color = 0;
1753                         goto RAGAIN;
1754                 case 'q':
1755                         scr_flush();
1756                         dest = fopen(temp2, "w");
1757                         quotflag = 1;
1758                         hold_color = enable_color;
1759                         enable_color = 0;
1760                         goto RAGAIN;
1761                 case 's':
1762                         return;
1763                 case 'a':
1764                         goto RAGAIN;
1765                 case 'b':
1766                         a = a - (rdir * 2);
1767                         break;
1768                 case 'm':
1769                 case 'c':
1770                         newprompt("Enter target room: ",
1771                                   targ, ROOMNAMELEN - 1);
1772                         if (!IsEmptyStr(targ)) {
1773                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1774                                                        msg_arr[a], targ, cmd);
1775                                 scr_printf("%s\n", cmd);
1776                                 if (r / 100 == 2)
1777                                         msg_arr[a] = 0L;
1778                         } else {
1779                                 goto RMSGREAD;
1780                         }
1781                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1782                                 goto RMSGREAD;  /* the logic here sucks */
1783                         break;
1784                 case 'o':
1785                 case 'f':
1786                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1787                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1788                                         filename, &attachment, progress, cmd);
1789                         if (r / 100 != 2) {
1790                                 scr_printf("%s\n", cmd);
1791                         } else {
1792                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1793                                 /*
1794                                  * Part 1 won't have a filename; use the
1795                                  * subject of the message instead. IO
1796                                  */
1797                                 if (IsEmptyStr(filename)) {
1798                                         strcpy(filename, reply_subject);
1799                                 }
1800                                 if (e == 'o') {         /* open attachment */
1801                                         mkdir(tempdir, 0700);
1802                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1803                                                 tempdir,
1804                                                 ++att_seq,
1805                                                 filename);
1806                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1807                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1808                                         rv = system(cmd);
1809                                         if (rv != 0)
1810                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1811                                 }
1812                                 else {                  /* save attachment to disk */
1813                                         destination_directory(save_to, filename);
1814                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1815                                 }
1816                         }
1817                         if (attachment) {
1818                                 free(attachment);
1819                                 attachment = NULL;
1820                         }
1821                         goto RMSGREAD;
1822                 case 'd':
1823                         scr_printf("*** Delete this message? ");
1824                         if (yesno() == 1) {
1825                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1826                                 scr_printf("%s\n", cmd);
1827                                 if (r / 100 == 2)
1828                                         msg_arr[a] = 0L;
1829                         } else {
1830                                 goto RMSGREAD;
1831                         }
1832                         break;
1833                 case 'h':
1834                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1835                         goto RMSGREAD;
1836                 case 'r':
1837                         savedpos = num_msgs;
1838                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1839                         num_msgs = savedpos;
1840                         goto RMSGREAD;
1841                 case 'u':
1842                         list_urls(ipc);
1843                         goto RMSGREAD;
1844                 case 'i':
1845                         image_view(ipc, msg_arr[a]);
1846                         goto RMSGREAD;
1847             case 'y':
1848           { /* hack hack hack */
1849             /* find the next message by me, stay here if we find nothing */
1850             int finda;
1851             int lasta = a;
1852             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1853               {
1854                 /* This is repetitively dumb, but that's what computers are for.
1855                    We have to load up messages until we find one by us */
1856                 char buf[SIZ];
1857                 int founda = 0;
1858                 struct ctdlipcmessage *msg = NULL;
1859
1860                 /* read the header so we can get 'from=' */
1861                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1862                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1863                         a = lasta; /* meesa current */
1864                         founda = 1;
1865                 }
1866
1867                 free(msg);
1868
1869                 if (founda)
1870                         break; /* for */
1871                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1872               } /* for */
1873           } /* case 'y' */
1874       } /* switch */
1875         }                       /* end for loop */
1876 }                               /* end read routine */
1877
1878
1879
1880
1881 /*
1882  * View and edit a system message
1883  */
1884 void edit_system_message(CtdlIPC *ipc, char *which_message)
1885 {
1886         char desc[SIZ];
1887         char read_cmd[SIZ];
1888         char write_cmd[SIZ];
1889
1890         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1891         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1892         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1893         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1894 }
1895
1896
1897
1898
1899 /*
1900  * Loads the contents of a file into memory.  Caller must free the allocated
1901  * memory.
1902  */
1903 char *load_message_from_file(FILE *src)
1904 {
1905         size_t i;
1906         size_t got = 0;
1907         char *dest = NULL;
1908
1909         fseek(src, 0, SEEK_END);
1910         i = ftell(src);
1911         rewind(src);
1912
1913         dest = (char *)calloc(1, i + 1);
1914         if (!dest)
1915                 return NULL;
1916
1917         while (got < i) {
1918                 size_t g;
1919
1920                 g = fread(dest + got, 1, i - got, src);
1921                 got += g;
1922                 if (g < i - got) {
1923                         /* Interrupted system call, keep going */
1924                         if (errno == EINTR)
1925                                 continue;
1926                         /* At this point we have either EOF or error */
1927                         i = got;
1928                         break;
1929                 }
1930                 dest[i] = 0;
1931         }
1932
1933         return dest;
1934 }