textclient/messages.c

   1 // Text client functions for reading and writing of messages
   2 //
   3 // Beware: this is really old and crappy code, written in the
   4 // late 1980s when my coding style was absolute garbage.  It
   5 // works, but we probably should replace most of it.
   6 //
   7 // Copyright (c) 1987-2022 by the citadel.org team
   8 //
   9 // This program is open source software.  Use, duplication, and/or
  10 // disclosure are subject to the GNU General Purpose License version 3.
  11 //
  12 // This program is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 #include "textclient.h"
  18
  19 #define MAXWORDBUF SIZ
  20 #define NO_REPLY_TO     "nobody ... xxxxxx"
  21
  22 char reply_to[SIZ];
  23 char reply_subject[SIZ];
  24 char reply_references[SIZ];
  25 char reply_inreplyto[SIZ];
  26
  27 struct cittext {
  28         struct cittext *next;
  29         char text[MAXWORDBUF];
  30 };
  31
  32 void stty_ctdl(int cmd);
  33 int haschar(const char *st, int ch);
  34 int file_checksum(char *filename);
  35 void progress(CtdlIPC * ipc, unsigned long curr, unsigned long cmax);
  36
  37 unsigned long *msg_arr = NULL;
  38 int msg_arr_size = 0;
  39 int num_msgs;
  40 extern char room_name[];
  41 extern char tempdir[];
  42 extern unsigned room_flags;
  43 extern unsigned room_flags2;
  44 extern int entmsg_ok;
  45 extern long highest_msg_read;
  46 extern char temp[];
  47 extern char temp2[];
  48 extern int screenwidth;
  49 extern int screenheight;
  50 extern long maxmsgnum;
  51 extern char is_mail;
  52 extern char is_aide;
  53 extern char is_room_aide;
  54 extern char fullname[];
  55 extern char axlevel;
  56 extern unsigned userflags;
  57 extern char sigcaught;
  58 extern char printcmd[];
  59 extern int rc_allow_attachments;
  60 extern int rc_display_message_numbers;
  61 extern int rc_force_mail_prompts;
  62 extern int editor_pid;
  63 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  64 int num_urls = 0;
  65 char urls[MAXURLS][SIZ];
  66 char imagecmd[SIZ];
  67 int has_images = 0;             /* Current msg has images */
  68 struct parts *last_message_parts = NULL;        /* Parts from last msg */
  69
  70
  71 void ka_sigcatch(int signum) {
  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         pid_t p;
  83
  84         alarm(S_KEEPALIVE);
  85         signal(SIGALRM, ka_sigcatch);
  86         do {
  87                 errno = 0;
  88                 p = wait(kstatus);
  89         } while (errno == EINTR);
  90         signal(SIGALRM, SIG_IGN);
  91         alarm(0);
  92         return (p);
  93 }
  94
  95
  96 /*
  97  * version of system() that uses ka_wait()
  98  */
  99 int ka_system(char *shc) {
 100         pid_t childpid;
 101         pid_t waitpid;
 102         int retcode;
 103
 104         childpid = fork();
 105         if (childpid < 0) {
 106                 color(BRIGHT_RED);
 107                 perror("Cannot fork");
 108                 color(DIM_WHITE);
 109                 return ((pid_t) childpid);
 110         }
 111
 112         if (childpid == 0) {
 113                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 114                 exit(127);
 115         }
 116
 117         if (childpid > 0) {
 118                 do {
 119                         waitpid = ka_wait(&retcode);
 120                 } while (waitpid != childpid);
 121                 return (retcode);
 122         }
 123
 124         return (-1);
 125 }
 126
 127
 128 /*
 129  * add a newline to the buffer...
 130  */
 131 void add_newline(struct cittext *textlist) {
 132         struct cittext *ptr;
 133
 134         ptr = textlist;
 135         while (ptr->next != NULL)
 136                 ptr = ptr->next;
 137
 138         while (ptr->text[strlen(ptr->text) - 1] == 32)
 139                 ptr->text[strlen(ptr->text) - 1] = 0;
 140
 141         ptr->next = (struct cittext *)
 142             malloc(sizeof(struct cittext));
 143         ptr = ptr->next;
 144         ptr->next = NULL;
 145         strcpy(ptr->text, "");
 146 }
 147
 148
 149 /*
 150  * add a word to the buffer...
 151  */
 152 void add_word(struct cittext *textlist, char *wordbuf) {
 153         struct cittext *ptr;
 154
 155         ptr = textlist;
 156         while (ptr->next != NULL)
 157                 ptr = ptr->next;
 158
 159         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 160                 ptr->next = (struct cittext *)
 161                     malloc(sizeof(struct cittext));
 162                 ptr = ptr->next;
 163                 ptr->next = NULL;
 164                 strcpy(ptr->text, "");
 165         }
 166
 167         strcat(ptr->text, wordbuf);
 168         strcat(ptr->text, " ");
 169 }
 170
 171
 172 /*
 173  * begin editing of an opened file pointed to by fp
 174  */
 175 void citedit(FILE * fp) {
 176         int a, prev, finished, b, last_space;
 177         int appending = 0;
 178         struct cittext *textlist = NULL;
 179         struct cittext *ptr;
 180         char wordbuf[MAXWORDBUF];
 181         int rv = 0;
 182
 183         /* first, load the text into the buffer */
 184         fseek(fp, 0L, 0);
 185         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 186         textlist->next = NULL;
 187         strcpy(textlist->text, "");
 188
 189         strcpy(wordbuf, "");
 190         prev = (-1);
 191         while (a = getc(fp), a >= 0) {
 192                 appending = 1;
 193                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 194                         add_word(textlist, wordbuf);
 195                         strcpy(wordbuf, "");
 196                         if ((prev == 13) || (prev == 10)) {
 197                                 add_word(textlist, "\n");
 198                                 add_newline(textlist);
 199                                 add_word(textlist, "");
 200                         }
 201                 }
 202                 else {
 203                         wordbuf[strlen(wordbuf) + 1] = 0;
 204                         wordbuf[strlen(wordbuf)] = a;
 205                 }
 206                 if (strlen(wordbuf) + 3 > screenwidth) {
 207                         add_word(textlist, wordbuf);
 208                         strcpy(wordbuf, "");
 209                 }
 210                 prev = a;
 211         }
 212
 213         /* get text */
 214         finished = 0;
 215         prev = (appending ? 13 : (-1));
 216         strcpy(wordbuf, "");
 217         do {
 218                 a = inkey();
 219                 if (a == 10)
 220                         a = 13;
 221                 if (a == 9)
 222                         a = 32;
 223                 if (a == 127)
 224                         a = 8;
 225
 226                 if ((a != 32) && (prev == 13)) {
 227                         add_word(textlist, "\n");
 228                         scr_printf(" ");
 229                 }
 230
 231                 if ((a == 32) && (prev == 13)) {
 232                         add_word(textlist, "\n");
 233                         add_newline(textlist);
 234                 }
 235
 236                 if (a == 8) {
 237                         if (!IsEmptyStr(wordbuf)) {
 238                                 wordbuf[strlen(wordbuf) - 1] = 0;
 239                                 scr_putc(8);
 240                                 scr_putc(32);
 241                                 scr_putc(8);
 242                         }
 243                 }
 244                 else if (a == 23) {
 245                         do {
 246                                 wordbuf[strlen(wordbuf) - 1] = 0;
 247                                 scr_putc(8);
 248                                 scr_putc(32);
 249                                 scr_putc(8);
 250                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 251                 }
 252                 else if (a == 13) {
 253                         scr_printf("\n");
 254                         if (IsEmptyStr(wordbuf))
 255                                 finished = 1;
 256                         else {
 257                                 for (b = 0; b < strlen(wordbuf); ++b)
 258                                         if (wordbuf[b] == 32) {
 259                                                 wordbuf[b] = 0;
 260                                                 add_word(textlist, wordbuf);
 261                                                 strcpy(wordbuf, &wordbuf[b + 1]);
 262                                                 b = 0;
 263                                         }
 264                                 add_word(textlist, wordbuf);
 265                                 strcpy(wordbuf, "");
 266                         }
 267                 }
 268                 else {
 269                         scr_putc(a);
 270                         wordbuf[strlen(wordbuf) + 1] = 0;
 271                         wordbuf[strlen(wordbuf)] = a;
 272                 }
 273                 if ((strlen(wordbuf) + 3) > screenwidth) {
 274                         last_space = (-1);
 275                         for (b = 0; b < strlen(wordbuf); ++b)
 276                                 if (wordbuf[b] == 32)
 277                                         last_space = b;
 278                         if (last_space >= 0) {
 279                                 for (b = 0; b < strlen(wordbuf); ++b)
 280                                         if (wordbuf[b] == 32) {
 281                                                 wordbuf[b] = 0;
 282                                                 add_word(textlist, wordbuf);
 283                                                 strcpy(wordbuf, &wordbuf[b + 1]);
 284                                                 b = 0;
 285                                         }
 286                                 for (b = 0; b < strlen(wordbuf); ++b) {
 287                                         scr_putc(8);
 288                                         scr_putc(32);
 289                                         scr_putc(8);
 290                                 }
 291                                 scr_printf("\n%s", wordbuf);
 292                         }
 293                         else {
 294                                 add_word(textlist, wordbuf);
 295                                 strcpy(wordbuf, "");
 296                                 scr_printf("\n");
 297                         }
 298                 }
 299                 prev = a;
 300         } while (finished == 0);
 301
 302         /* write the buffer back to disk */
 303         fseek(fp, 0L, 0);
 304         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 305                 fprintf(fp, "%s", ptr->text);
 306         }
 307         putc(10, fp);
 308         fflush(fp);
 309         rv = ftruncate(fileno(fp), ftell(fp));
 310         if (rv < 0)
 311                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 312
 313
 314         /* and deallocate the memory we used */
 315         while (textlist != NULL) {
 316                 ptr = textlist->next;
 317                 free(textlist);
 318                 textlist = ptr;
 319         }
 320 }
 321
 322
 323 /*
 324  * Free the struct parts
 325  */
 326 void free_parts(struct parts *p) {
 327         struct parts *a_part = p;
 328
 329         while (a_part) {
 330                 struct parts *q;
 331
 332                 q = a_part;
 333                 a_part = a_part->next;
 334                 free(q);
 335         }
 336 }
 337
 338
 339 /*
 340  * This is a mini RFC2047 decoder.
 341  * It only handles strings encoded from UTF-8 as Quoted-printable.
 342  * We can do this "in place" because the converted string will always be smaller than the source string.
 343  */
 344 void mini_2047_decode(char *s) {
 345         if (!s) {               // no null strings allowed!
 346                 return;
 347         }
 348
 349         char *qstart = strstr(s, "=?UTF-8?Q?"); // Must start with this string
 350         if (!qstart) {
 351                 return;
 352         }
 353
 354         char *qend = strstr(qstart + 10, "?="); // Must end with this string
 355         if (!qend) {
 356                 return;
 357         }
 358
 359         if (qend <= qstart) {   // And there must be something in between them.
 360                 return;
 361         }
 362
 363         // The string has qualified for conversion.
 364
 365         strcpy(qend, "");       // Strip the trailer
 366         strcpy(qstart, &qstart[10]);    // Strip the header
 367
 368         char *r = qstart;       // Pointer to where in the string we're reading
 369         char *w = s;            // Pointer to where in the string we're writing
 370
 371         while (*r) {            // Loop through the source string
 372                 if (r[0] == '=') {      // "=" means read a hex character
 373                         char ch[3];
 374                         ch[0] = r[1];
 375                         ch[1] = r[2];
 376                         ch[2] = r[3];
 377                         int c;
 378                         sscanf(ch, "%02x", &c);
 379                         w[0] = c;
 380                         r += 3;
 381                         ++w;
 382                 }
 383                 else if (r[0] == '_') { // "_" is a space
 384                         w[0] = ' ';
 385                         ++r;
 386                         ++w;
 387                 }
 388                 else {          // anything else pass through literally
 389                         w[0] = r[0];
 390                         ++r;
 391                         ++w;
 392                 }
 393         }
 394         w[0] = 0;               // null terminate
 395 }
 396
 397
 398 /*
 399  * Read a message from the server
 400  */
 401 int read_message(CtdlIPC * ipc, long num,       /* message number */
 402                  int pagin,     /* 0 = normal read, 1 = read with pagination, 2 = header */
 403                  FILE * dest    /* Destination file, NULL for screen */
 404     ) {
 405         char buf[SIZ];
 406         char now[256];
 407         int format_type = 0;
 408         int fr = 0;
 409         int nhdr = 0;
 410         struct ctdlipcmessage *message = NULL;
 411         int r;                  /* IPC response code */
 412         char *converted_text = NULL;
 413         char *lineptr;
 414         char *nextline;
 415         char *searchptr;
 416         int i;
 417         char ch;
 418         int linelen;
 419         int final_line_is_blank = 0;
 420         has_images = 0;
 421
 422         sigcaught = 0;
 423         stty_ctdl(1);
 424
 425         strcpy(reply_to, NO_REPLY_TO);
 426         strcpy(reply_subject, "");
 427         strcpy(reply_references, "");
 428         strcpy(reply_inreplyto, "");
 429
 430         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 431         if (r / 100 != 1) {
 432                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 433                 stty_ctdl(0);
 434                 free(message->text);
 435                 free_parts(message->attachments);
 436                 free(message);
 437                 return (0);
 438         }
 439
 440         if (dest) {
 441                 fprintf(dest, "\n ");
 442         }
 443         else {
 444                 scr_printf("\n");
 445                 if (pagin != 2) {
 446                         scr_printf(" ");
 447                 }
 448         }
 449         if (pagin == 1 && !dest) {
 450                 color(BRIGHT_CYAN);
 451         }
 452
 453         /* View headers only */
 454         if (pagin == 2) {
 455                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 456                            message->nhdr ? "yes" : "no", message->author, message->type, 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", message->room, asctime(localtime(&message->time)));
 464                 if (!IsEmptyStr(message->recipient)) {
 465                         scr_printf("rcpt=%s\n", message->recipient);
 466                 }
 467                 if (message->attachments) {
 468                         struct parts *ptr;
 469
 470                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 471                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 472                                            ptr->name, ptr->filename, ptr->number, ptr->disposition, ptr->mimetype, ptr->length);
 473                         }
 474                 }
 475                 scr_printf("\n");
 476                 stty_ctdl(0);
 477                 free(message->text);
 478                 free_parts(message->attachments);
 479                 free(message);
 480                 return (0);
 481         }
 482
 483         if (rc_display_message_numbers) {
 484                 if (dest) {
 485                         fprintf(dest, "[#%s] ", message->msgid);
 486                 }
 487                 else {
 488                         color(DIM_WHITE);
 489                         scr_printf("[");
 490                         color(BRIGHT_WHITE);
 491                         scr_printf("#%s", message->msgid);
 492                         color(DIM_WHITE);
 493                         scr_printf("] ");
 494                 }
 495         }
 496         if (nhdr == 1 && !is_room_aide) {
 497                 if (dest) {
 498                         fprintf(dest, " ****");
 499                 }
 500                 else {
 501                         scr_printf(" ****");
 502                 }
 503         }
 504         else {
 505                 struct tm thetime;
 506                 localtime_r(&message->time, &thetime);
 507                 strftime(now, sizeof now, "%F %R", &thetime);
 508                 if (dest) {
 509                         fprintf(dest, "%s from %s ", now, message->author);
 510                         if (!message->is_local) {
 511                                 fprintf(dest, "<%s> ", message->email);
 512                         }
 513                 }
 514                 else {
 515                         color(BRIGHT_CYAN);
 516                         scr_printf("%s ", now);
 517                         color(DIM_WHITE);
 518                         scr_printf("from ");
 519                         color(BRIGHT_CYAN);
 520                         scr_printf("%s ", message->author);
 521                         if (!message->is_local) {
 522                                 color(DIM_WHITE);
 523                                 scr_printf("<");
 524                                 color(BRIGHT_BLUE);
 525                                 scr_printf("%s", message->email);
 526                                 color(DIM_WHITE);
 527                                 scr_printf("> ");
 528                         }
 529                 }
 530                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 531                         if (dest) {
 532                                 fprintf(dest, "in %s> ", message->room);
 533                         }
 534                         else {
 535                                 color(DIM_WHITE);
 536                                 scr_printf("in ");
 537                                 color(BRIGHT_MAGENTA);
 538                                 scr_printf("%s> ", message->room);
 539                         }
 540                 }
 541                 if (!IsEmptyStr(message->recipient)) {
 542                         if (dest) {
 543                                 fprintf(dest, "to %s ", message->recipient);
 544                         }
 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         }
 557         else {
 558                 scr_printf("\n");
 559         }
 560
 561         // Set the reply-to address to an Internet e-mail address if possible
 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                         strncpy(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         if (!strcmp(reply_to, NO_REPLY_TO)) {
 573                 strncpy(reply_to, message->author, sizeof(reply_to));
 574         }
 575
 576         if (message->msgid != NULL) {
 577                 strncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 578         }
 579
 580         if (message->references != NULL) {
 581                 if (!IsEmptyStr(message->references)) {
 582                         strncpy(reply_references, message->references, sizeof reply_references);
 583                 }
 584         }
 585
 586         if (message->subject != NULL) {
 587                 strncpy(reply_subject, message->subject, sizeof reply_subject);
 588                 if (!IsEmptyStr(message->subject)) {
 589                         if (dest) {
 590                                 fprintf(dest, "Subject: %s\n", message->subject);
 591                         }
 592                         else {
 593                                 color(DIM_WHITE);
 594                                 scr_printf("Subject: ");
 595                                 color(BRIGHT_CYAN);
 596                                 mini_2047_decode(message->subject);
 597                                 scr_printf("%s\n", message->subject);
 598
 599                         }
 600                 }
 601         }
 602
 603         if (pagin == 1 && !dest) {
 604                 color(BRIGHT_WHITE);
 605         }
 606
 607         /******* end of header output, start of message text output *******/
 608
 609         /*
 610          * Convert HTML to plain text, formatting for the actual width
 611          * of the client screen.
 612          */
 613         if (!strcasecmp(message->content_type, "text/html")) {
 614                 converted_text = html_to_ascii(message->text, 0, screenwidth, (enable_color ? 1 : 0));
 615                 if (converted_text != NULL) {
 616                         free(message->text);
 617                         message->text = converted_text;
 618                         format_type = 1;
 619                 }
 620         }
 621
 622         /* Text/plain is a different type */
 623         if (!strcasecmp(message->content_type, "text/plain")) {
 624                 format_type = 1;
 625         }
 626
 627         /* Render text/x-markdown as plain text */
 628         if (!strcasecmp(message->content_type, "text/x-markdown")) {
 629                 format_type = 1;
 630         }
 631
 632         /* Extract URL's */
 633         static char *urlprefixes[] = {
 634                 "http://",
 635                 "https://",
 636                 "ftp://"
 637         };
 638         int p = 0;
 639         num_urls = 0;           /* Start with a clean slate */
 640         for (p = 0; p < (sizeof urlprefixes / sizeof(char *)); ++p) {
 641                 searchptr = message->text;
 642                 while ((searchptr != NULL) && (num_urls < MAXURLS)) {
 643                         searchptr = strstr(searchptr, urlprefixes[p]);
 644                         if (searchptr != NULL) {
 645                                 strncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 646                                 for (i = 0; i < strlen(urls[num_urls]); i++) {
 647                                         ch = urls[num_urls][i];
 648                                         if (ch == '>' || ch == '\"' || ch == ')' || ch == ' ' || ch == '\n') {
 649                                                 urls[num_urls][i] = 0;
 650                                                 break;
 651                                         }
 652                                 }
 653                                 num_urls++;
 654                                 ++searchptr;
 655                         }
 656                 }
 657         }
 658
 659         /*
 660          * Here we go
 661          */
 662         if (format_type == 0) {
 663                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 664         }
 665         else {
 666                 /* renderer for text/plain */
 667
 668                 lineptr = message->text;
 669
 670                 do {
 671                         nextline = strchr(lineptr, '\n');
 672                         if (nextline != NULL) {
 673                                 *nextline = 0;
 674                                 ++nextline;
 675                                 if (*nextline == 0)
 676                                         nextline = NULL;
 677                         }
 678
 679                         if (sigcaught == 0) {
 680                                 linelen = strlen(lineptr);
 681                                 if (linelen && (lineptr[linelen - 1] == '\r')) {
 682                                         lineptr[--linelen] = 0;
 683                                 }
 684                                 if (dest) {
 685                                         fprintf(dest, "%s\n", lineptr);
 686                                 }
 687                                 else {
 688                                         scr_printf("%s\n", lineptr);
 689                                 }
 690                         }
 691                         if (lineptr[0] == 0)
 692                                 final_line_is_blank = 1;
 693                         else
 694                                 final_line_is_blank = 0;
 695                         lineptr = nextline;
 696                 } while (nextline);
 697                 fr = sigcaught;
 698         }
 699         if (!final_line_is_blank) {
 700                 if (dest) {
 701                         fprintf(dest, "\n");
 702                 }
 703                 else {
 704                         scr_printf("\n");
 705                         fr = sigcaught;
 706                 }
 707         }
 708
 709         /* Enumerate any attachments */
 710         if ((pagin == 1) && (message->attachments)) {
 711                 struct parts *ptr;
 712
 713                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 714                         if ((!strcasecmp(ptr->disposition, "attachment"))
 715                             || (!strcasecmp(ptr->disposition, "inline"))
 716                             || (!strcasecmp(ptr->disposition, ""))
 717                             ) {
 718                                 if ((strcasecmp(ptr->number, message->mime_chosen))
 719                                     && (!IsEmptyStr(ptr->mimetype))
 720                                     ) {
 721                                         color(DIM_WHITE);
 722                                         scr_printf("Part ");
 723                                         color(BRIGHT_MAGENTA);
 724                                         scr_printf("%s", ptr->number);
 725                                         color(DIM_WHITE);
 726                                         scr_printf(": ");
 727                                         color(BRIGHT_CYAN);
 728                                         scr_printf("%s", ptr->filename);
 729                                         color(DIM_WHITE);
 730                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 731                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 732                                                 has_images++;
 733                                         }
 734                                 }
 735                         }
 736                 }
 737         }
 738
 739         /* Save the attachments info for later */
 740         last_message_parts = message->attachments;
 741
 742         /* Now we're done */
 743         free(message->text);
 744         free(message);
 745
 746         if (pagin == 1 && !dest)
 747                 color(DIM_WHITE);
 748         stty_ctdl(0);
 749         return (fr);
 750 }
 751
 752
 753 /*
 754  * replace string function for the built-in editor
 755  */
 756 void replace_string(char *filename, long int startpos) {
 757         char buf[512];
 758         char srch_str[128];
 759         char rplc_str[128];
 760         FILE *fp;
 761         int a;
 762         long rpos, wpos;
 763         char *ptr;
 764         int substitutions = 0;
 765         long msglen = 0L;
 766         int rv;
 767
 768         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str) - 1));
 769         if (IsEmptyStr(srch_str)) {
 770                 return;
 771         }
 772
 773         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str) - 1));
 774
 775         fp = fopen(filename, "r+");
 776         if (fp == NULL) {
 777                 return;
 778         }
 779
 780         wpos = startpos;
 781         fseek(fp, startpos, 0);
 782         strcpy(buf, "");
 783         while (a = getc(fp), a > 0) {
 784                 ++msglen;
 785                 buf[strlen(buf) + 1] = 0;
 786                 buf[strlen(buf)] = a;
 787                 if (strlen(buf) >= strlen(srch_str)) {
 788                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 789                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 790                                 strcpy(ptr, rplc_str);
 791                                 ++substitutions;
 792                         }
 793                 }
 794                 if (strlen(buf) > 384) {
 795                         rpos = ftell(fp);
 796                         fseek(fp, wpos, 0);
 797                         rv = fwrite((char *) buf, 128, 1, fp);
 798                         if (rv < 0) {
 799                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 800                                 break;  /*whoopsi! */
 801                         }
 802                         strcpy(buf, &buf[128]);
 803                         wpos = ftell(fp);
 804                         fseek(fp, rpos, 0);
 805                 }
 806         }
 807         fseek(fp, wpos, 0);
 808         if (!IsEmptyStr(buf)) {
 809                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 810         }
 811         wpos = ftell(fp);
 812         fclose(fp);
 813         rv = truncate(filename, wpos);
 814         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 815 }
 816
 817
 818 // Function to begin composing a new message
 819 int client_make_message(CtdlIPC * ipc, char *filename,  // temporary file name
 820                         char *recipient,        // NULL if it's not mail
 821                         int is_anonymous, int format_type, int mode, char *subject,     // buffer to store subject line
 822                         int subject_required) {
 823         FILE *fp;
 824         int a, b, e_ex_code;
 825         long beg;
 826         char datestr[256];
 827         char header[SIZ];
 828         int cksum = 0;
 829
 830         if ((mode == 2) && (IsEmptyStr(editor_path))) {
 831                 scr_printf("*** No editor available; using built-in editor.\n");
 832                 mode = 0;
 833         }
 834
 835         struct tm thetime;
 836         time_t now = time(NULL);
 837         localtime_r(&now, &thetime);
 838         strftime(datestr, sizeof datestr, "%F %R", &thetime);
 839         header[0] = 0;
 840
 841         if (room_flags & QR_ANONONLY && !recipient) {
 842                 snprintf(header, sizeof header, " ****");
 843         }
 844         else {
 845                 snprintf(header, sizeof header, " %s from %s", datestr, (is_anonymous ? "[anonymous]" : fullname));
 846                 if (!IsEmptyStr(recipient)) {
 847                         size_t tmp = strlen(header);
 848                         snprintf(&header[tmp], sizeof header - tmp, " to %s", recipient);
 849                 }
 850         }
 851         scr_printf("%s\n", header);
 852         if (subject != NULL)
 853                 if (!IsEmptyStr(subject)) {
 854                         scr_printf("Subject: %s\n", subject);
 855                 }
 856
 857         if ((subject_required) && (IsEmptyStr(subject))) {
 858                 newprompt("Subject: ", subject, 70);
 859         }
 860
 861         if (mode == 1) {
 862                 scr_printf("(Press ctrl-d when finished)\n");
 863         }
 864
 865         if (mode == 0) {
 866                 fp = fopen(filename, "r");
 867                 if (fp != NULL) {
 868                         fmout(screenwidth, fp, NULL, NULL, 0);
 869                         beg = ftell(fp);
 870                         if (beg < 0)
 871                                 scr_printf("failed to get stream position %s\n", strerror(errno));
 872                         fclose(fp);
 873                 }
 874                 else {
 875                         fp = fopen(filename, "w");
 876                         if (fp == NULL) {
 877                                 scr_printf("*** Error opening temp file!\n    %s: %s\n", filename, strerror(errno));
 878                                 return (1);
 879                         }
 880                         fclose(fp);
 881                 }
 882         }
 883
 884       ME1:switch (mode) {
 885
 886         case 0:
 887                 fp = fopen(filename, "r+");
 888                 if (fp == NULL) {
 889                         scr_printf("*** Error opening temp file!\n    %s: %s\n", filename, strerror(errno)
 890                             );
 891                         return (1);
 892                 }
 893                 citedit(fp);
 894                 fclose(fp);
 895                 goto MECR;
 896
 897         case 1:
 898                 fp = fopen(filename, "a");
 899                 if (fp == NULL) {
 900                         scr_printf("*** Error opening temp file!\n" "    %s: %s\n", filename, strerror(errno));
 901                         return (1);
 902                 }
 903                 do {
 904                         a = inkey();
 905                         if (a == 255)
 906                                 a = 32;
 907                         if (a == 13)
 908                                 a = 10;
 909                         if (a != 4) {
 910                                 putc(a, fp);
 911                                 scr_putc(a);
 912                         }
 913                         if (a == 10)
 914                                 scr_putc(10);
 915                 } while (a != 4);
 916                 fclose(fp);
 917                 break;
 918
 919         case 2:
 920         default:                /* allow 2+ modes */
 921                 e_ex_code = 1;  /* start with a failed exit code */
 922                 stty_ctdl(SB_RESTORE);
 923                 editor_pid = fork();
 924                 cksum = file_checksum(filename);
 925                 if (editor_pid == 0) {
 926                         char tmp[SIZ];
 927
 928                         chmod(filename, 0600);
 929                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 930                         putenv(tmp);
 931                         execlp(editor_path, editor_path, filename, NULL);
 932                         exit(1);
 933                 }
 934                 if (editor_pid > 0)
 935                         do {
 936                                 e_ex_code = 0;
 937                                 b = ka_wait(&e_ex_code);
 938                         } while ((b != editor_pid) && (b >= 0));
 939                 editor_pid = (-1);
 940                 stty_ctdl(0);
 941                 break;
 942         }
 943
 944       MECR:if (mode >= 2) {
 945                 if (file_checksum(filename) == cksum) {
 946                         scr_printf("*** Aborted message.\n");
 947                         e_ex_code = 1;
 948                 }
 949                 if (e_ex_code == 0) {
 950                         goto MEFIN;
 951                 }
 952                 goto MEABT2;
 953         }
 954
 955         b = keymenu("Entry command (? for options)",
 956                     "<A>bort|"
 957                     "<C>ontinue|" "<S>ave message|" "<P>rint formatted|" "add s<U>bject|" "<R>eplace string|" "<H>old message");
 958
 959         if (b == 'a')
 960                 goto MEABT;
 961         if (b == 'c')
 962                 goto ME1;
 963         if (b == 's')
 964                 goto MEFIN;
 965         if (b == 'p') {
 966                 scr_printf(" %s from %s", datestr, fullname);
 967                 if (!IsEmptyStr(recipient)) {
 968                         scr_printf(" to %s", recipient);
 969                 }
 970                 scr_printf("\n");
 971                 if (subject != NULL)
 972                         if (!IsEmptyStr(subject)) {
 973                                 scr_printf("Subject: %s\n", subject);
 974                         }
 975                 fp = fopen(filename, "r");
 976                 if (fp != NULL) {
 977                         fmout(screenwidth, fp, NULL, NULL, 0);
 978                         beg = ftell(fp);
 979                         if (beg < 0)
 980                                 scr_printf("failed to get stream position %s\n", strerror(errno));
 981                         fclose(fp);
 982                 }
 983                 goto MECR;
 984         }
 985         if (b == 'r') {
 986                 replace_string(filename, 0L);
 987                 goto MECR;
 988         }
 989         if (b == 'h') {
 990                 return (2);
 991         }
 992         if (b == 'u') {
 993                 if (subject != NULL) {
 994                         newprompt("Subject: ", subject, 70);
 995                 }
 996                 goto MECR;
 997         }
 998
 999       MEFIN:return (0);
1000
1001       MEABT:scr_printf("Are you sure? ");
1002         if (yesno() == 0) {
1003                 goto ME1;
1004         }
1005       MEABT2:unlink(filename);
1006         return (2);
1007 }
1008
1009
1010 /*
1011  * Make sure there's room in msg_arr[] for at least one more.
1012  */
1013 void check_msg_arr_size(void) {
1014         if ((num_msgs + 1) > msg_arr_size) {
1015                 msg_arr_size += 512;
1016                 msg_arr = realloc(msg_arr, ((sizeof(long)) * msg_arr_size));
1017         }
1018 }
1019
1020
1021 /*
1022  * break_big_lines()  -  break up lines that are >1024 characters
1023  *                       otherwise the server will truncate
1024  */
1025 void break_big_lines(char *msg) {
1026         char *ptr;
1027         char *break_here;
1028
1029         if (msg == NULL) {
1030                 return;
1031         }
1032
1033         ptr = msg;
1034         while (strlen(ptr) > 1000) {
1035                 break_here = strchr(&ptr[900], ' ');
1036                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1037                         break_here = &ptr[999];
1038                 }
1039                 *break_here = '\n';
1040                 ptr = break_here++;
1041         }
1042 }
1043
1044
1045 /*
1046  * entmsg()  -  edit and create a message
1047  *              returns 0 if message was saved
1048  */
1049 int entmsg(CtdlIPC * ipc, int is_reply, /* nonzero if this was a <R>eply command */
1050            int c,               /* mode */
1051            int masquerade       /* prompt for a non-default display name? */
1052     ) {
1053         char buf[SIZ];
1054         int a, b;
1055         int need_recp = 0;
1056         int mode;
1057         long highmsg = 0L;
1058         FILE *fp;
1059         char subject[SIZ];
1060         struct ctdlipcmessage message;
1061         unsigned long *msgarr = NULL;
1062         int r;                  /* IPC response code */
1063         int subject_required = 0;
1064
1065         /*
1066          * First, check to see if we have permission to enter a message in
1067          * this room.  The server will return an error code if we can't.
1068          */
1069         if (entmsg_ok == ENTMSG_OK_YES) {
1070                 /* no problem, go right ahead */
1071         }
1072         else if (entmsg_ok == ENTMSG_OK_BLOG) {
1073                 if (!is_reply) {
1074                         scr_printf("WARNING: this is a BLOG room.\n");
1075                         scr_printf("The '<E>nter Message' command will create a BLOG POST.\n");
1076                         scr_printf("If you want to leave a comment or reply to a comment, use the '<R>eply' command.\n");
1077                         scr_printf("Do you really want to create a new blog post? ");
1078                         if (!yesno()) {
1079                                 return (1);
1080                         }
1081                 }
1082         }
1083         else {
1084                 scr_printf("You may not enter messages in this type of room.\n");
1085                 return (1);
1086         }
1087
1088         if (c > 0) {
1089                 mode = 1;
1090         }
1091         else {
1092                 mode = 0;
1093         }
1094
1095         strcpy(subject, "");
1096
1097         strcpy(message.recipient, "");
1098         strcpy(message.author, "");
1099         strcpy(message.subject, "");
1100         strcpy(message.references, "");
1101         message.text = "";      /* point to "", changes later */
1102         message.anonymous = 0;
1103         message.type = mode;
1104
1105         if (masquerade) {
1106                 newprompt("Display name for this message: ", message.author, 40);
1107         }
1108
1109         if (is_reply) {
1110
1111                 if (!IsEmptyStr(reply_subject)) {
1112                         if (!strncasecmp(reply_subject, "Re: ", 3)) {
1113                                 strcpy(message.subject, reply_subject);
1114                         }
1115                         else {
1116                                 snprintf(message.subject, sizeof message.subject, "Re: %s", reply_subject);
1117                         }
1118                 }
1119
1120                 /* Trim down excessively long lists of thread references.  We eliminate the
1121                  * second one in the list so that the thread root remains intact.
1122                  */
1123                 int rrtok = num_tokens(reply_references, '|');
1124                 int rrlen = strlen(reply_references);
1125                 if (((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10)) {
1126                         remove_token(reply_references, 1, '|');
1127                 }
1128
1129                 snprintf(message.references, sizeof message.references, "%s%s%s",
1130                          reply_references, (IsEmptyStr(reply_references) ? "" : "|"), reply_inreplyto);
1131         }
1132
1133         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1134
1135         if (r / 100 != 2 && r / 10 != 57) {
1136                 scr_printf("%s\n", buf);
1137                 return (1);
1138         }
1139
1140         /* Error code 570 is special.  It means that we CAN enter a message
1141          * in this room, but a recipient needs to be specified.
1142          */
1143         need_recp = 0;
1144         if (r / 10 == 57) {
1145                 need_recp = 1;
1146         }
1147
1148         /* If the user is a dumbass, tell them how to type. */
1149         if ((userflags & US_EXPERT) == 0) {
1150                 scr_printf("Entering message.  Word wrap will give you soft linebreaks.  Pressing the\n");
1151                 scr_printf("'enter' key will give you a hard linebreak and an indent.  Press 'enter' twice\n");
1152                 scr_printf("when finished.\n");
1153         }
1154
1155         /* Handle the selection of a recipient, if necessary. */
1156         strcpy(buf, "");
1157         if (need_recp == 1) {
1158                 if (axlevel >= AxProbU) {
1159                         if (is_reply) {
1160                                 strcpy(buf, reply_to);
1161                         }
1162                         else {
1163                                 newprompt("Enter recipient: ", buf, SIZ - 100);
1164                                 if (IsEmptyStr(buf)) {
1165                                         return (1);
1166                                 }
1167                         }
1168                 }
1169                 else {
1170                         strcpy(buf, "sysop");
1171                 }
1172         }
1173         strcpy(message.recipient, buf);
1174
1175         if (room_flags & QR_ANONOPT) {
1176                 scr_printf("Anonymous (Y/N)? ");
1177                 if (yesno() == 1)
1178                         message.anonymous = 1;
1179         }
1180
1181         /* If it's mail, we've got to check the validity of the recipient... */
1182         if (!IsEmptyStr(message.recipient)) {
1183                 r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1184                 if (r / 100 != 2) {
1185                         scr_printf("%s\n", buf);
1186                         return (1);
1187                 }
1188         }
1189
1190         /* Learn the number of the newest message in in the room, so we can
1191          * tell upon saving whether someone else has posted too.
1192          */
1193         num_msgs = 0;
1194         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1195         if (r / 100 != 1) {
1196                 scr_printf("%s\n", buf);
1197         }
1198         else {
1199                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++);
1200         }
1201
1202         /* Now compose the message... */
1203         if (client_make_message(ipc, temp, message.recipient, message.anonymous, 0, c, message.subject, subject_required) != 0) {
1204                 if (msgarr)
1205                         free(msgarr);
1206                 return (2);
1207         }
1208
1209         /* Reopen the temp file that was created, so we can send it */
1210         fp = fopen(temp, "r");
1211
1212         if (!fp || !(message.text = load_message_from_file(fp))) {
1213                 scr_printf("*** Internal error while trying to save message!\n" "%s: %s\n", temp, strerror(errno));
1214                 unlink(temp);
1215                 return (errno);
1216         }
1217
1218         if (fp)
1219                 fclose(fp);
1220
1221         /* Break lines that are >1024 characters, otherwise the server
1222          * will truncate them.
1223          */
1224         break_big_lines(message.text);
1225
1226         /* Transmit message to the server */
1227         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1228         if (r / 100 != 4) {
1229                 scr_printf("%s\n", buf);
1230                 return (1);
1231         }
1232
1233         /* Yes, unlink it now, so it doesn't stick around if we crash */
1234         unlink(temp);
1235
1236         if (num_msgs >= 1)
1237                 highmsg = msgarr[num_msgs - 1];
1238
1239         if (msgarr)
1240                 free(msgarr);
1241         msgarr = NULL;
1242         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1243         if (r / 100 != 1) {
1244                 scr_printf("%s\n", buf);
1245         }
1246         else {
1247                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++);
1248         }
1249
1250         /* get new highest message number in room to set lrp for goto... */
1251         maxmsgnum = msgarr[num_msgs - 1];
1252
1253         /* now see if anyone else has posted in here */
1254         b = (-1);
1255         for (a = 0; a < num_msgs; ++a) {
1256                 if (msgarr[a] > highmsg) {
1257                         ++b;
1258                 }
1259         }
1260         if (msgarr) {
1261                 free(msgarr);
1262         }
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 in this room by another user.\n");
1274         }
1275         else if (b > 1) {
1276                 scr_printf("*** %d additional messages have been entered in this room by other users.\n", b);
1277         }
1278         free(message.text);
1279
1280         return (0);
1281 }
1282
1283
1284 /*
1285  * Do editing on a quoted file
1286  */
1287 void process_quote(void) {
1288         FILE *qfile, *tfile;
1289         char buf[128];
1290         int line, qstart, qend;
1291
1292         // Unlink the second temp file as soon as it's opened, so it'll get
1293         // deleted even if the program dies
1294         qfile = fopen(temp2, "r");
1295         unlink(temp2);
1296
1297         /* Display the quotable text with line numbers added */
1298         line = 0;
1299         if (fgets(buf, 128, qfile) == NULL) {
1300                 /* we're skipping a line here */
1301         }
1302         while (fgets(buf, 128, qfile) != NULL) {
1303                 scr_printf("%3d %s", ++line, buf);
1304         }
1305
1306         qstart = intprompt("Begin quoting at", 1, 1, line);
1307         qend = intprompt("  End quoting at", line, qstart, line);
1308
1309         rewind(qfile);
1310         line = 0;
1311         if (fgets(buf, 128, qfile) == NULL) {
1312                 /* we're skipping a line here */
1313         }
1314         tfile = fopen(temp, "w");
1315         while (fgets(buf, 128, qfile) != NULL) {
1316                 if ((++line >= qstart) && (line <= qend)) {
1317                         fprintf(tfile, " >%s", buf);
1318                 }
1319         }
1320         fprintf(tfile, " \n");
1321         fclose(qfile);
1322         fclose(tfile);
1323         chmod(temp, 0666);
1324 }
1325
1326
1327 /*
1328  * List the URLs which were embedded in the previous message
1329  */
1330 void list_urls(CtdlIPC * ipc) {
1331         int i;
1332         char cmd[SIZ];
1333         int rv;
1334
1335         if (num_urls == 0) {
1336                 scr_printf("There were no URLs in the previous message.\n\n");
1337                 return;
1338         }
1339
1340         for (i = 0; i < num_urls; ++i) {
1341                 scr_printf("%3d %s\n", i + 1, urls[i]);
1342         }
1343
1344         if ((i = num_urls) != 1) {
1345                 i = intprompt("Display which one", 1, 1, num_urls);
1346         }
1347
1348         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1349         rv = system(cmd);
1350         scr_printf("\n");
1351 }
1352
1353
1354 /*
1355  * Run image viewer in background
1356  */
1357 int do_image_view(const char *filename) {
1358         char cmd[SIZ];
1359         pid_t childpid;
1360
1361         snprintf(cmd, sizeof cmd, imagecmd, filename);
1362         childpid = fork();
1363         if (childpid < 0) {
1364                 unlink(filename);
1365                 return childpid;
1366         }
1367
1368         if (childpid == 0) {
1369                 int retcode;
1370                 pid_t grandchildpid;
1371
1372                 grandchildpid = fork();
1373                 if (grandchildpid < 0) {
1374                         return grandchildpid;
1375                 }
1376
1377                 if (grandchildpid == 0) {
1378                         int nullfd;
1379                         int outfd = -1;
1380                         int errfd = -1;
1381
1382                         nullfd = open("/dev/null", O_WRONLY);
1383                         if (nullfd > -1) {
1384                                 dup2(1, outfd);
1385                                 dup2(2, errfd);
1386                                 dup2(nullfd, 1);
1387                                 dup2(nullfd, 2);
1388                         }
1389                         retcode = system(cmd);
1390                         if (nullfd > -1) {
1391                                 dup2(outfd, 1);
1392                                 dup2(errfd, 2);
1393                                 close(nullfd);
1394                         }
1395                         unlink(filename);
1396                         exit(retcode);
1397                 }
1398
1399                 if (grandchildpid > 0) {
1400                         exit(0);
1401                 }
1402         }
1403
1404         if (childpid > 0) {
1405                 int retcode;
1406
1407                 waitpid(childpid, &retcode, 0);
1408                 return retcode;
1409         }
1410
1411         return -1;
1412 }
1413
1414
1415 /*
1416  * View an image attached to a message
1417  */
1418 void image_view(CtdlIPC * ipc, unsigned long msg) {
1419         struct parts *ptr = last_message_parts;
1420         char part[SIZ];
1421         int found = 0;
1422
1423         /* Run through available parts */
1424         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1425                 if ((!strcasecmp(ptr->disposition, "attachment")
1426                      || !strcasecmp(ptr->disposition, "inline"))
1427                     && !strncmp(ptr->mimetype, "image/", 6)) {
1428                         found++;
1429                         if (found == 1) {
1430                                 strcpy(part, ptr->number);
1431                         }
1432                 }
1433         }
1434
1435         while (found > 0) {
1436                 if (found > 1)
1437                         strprompt("View which part (0 when done)", part, SIZ - 1);
1438                 found = -found;
1439                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1440                         if ((!strcasecmp(ptr->disposition, "attachment")
1441                              || !strcasecmp(ptr->disposition, "inline"))
1442                             && !strncmp(ptr->mimetype, "image/", 6)
1443                             && !strcasecmp(ptr->number, part)) {
1444                                 char tmp[PATH_MAX];
1445                                 char buf[SIZ];
1446                                 void *file = NULL;      /* The downloaded file */
1447                                 int r;
1448
1449                                 /* view image */
1450                                 found = -found;
1451                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1452                                 if (r / 100 != 2) {
1453                                         scr_printf("%s\n", buf);
1454                                 }
1455                                 else {
1456                                         size_t len;
1457
1458                                         len = (size_t) extract_long(buf, 0);
1459                                         progress(ipc, len, len);
1460                                         scr_flush();
1461                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1462                                         strcat(tmp, ptr->filename);
1463                                         save_buffer(file, len, tmp);
1464                                         free(file);
1465                                         do_image_view(tmp);
1466                                 }
1467                                 break;
1468                         }
1469                 }
1470                 if (found == 1)
1471                         break;
1472         }
1473 }
1474
1475
1476 /*
1477  * Read the messages in the current room
1478  */
1479 void readmsgs(CtdlIPC * ipc, enum MessageList c,        // see listing in citadel_ipc.h
1480               enum MessageDirection rdir,       // 1=Forward (-1)=Reverse
1481               int q             // Number of msgs to read (if c==3)
1482     ) {
1483         int a, e, f, g, start;
1484         int savedpos;
1485         int hold_sw = 0;
1486         char arcflag = 0;
1487         char quotflag = 0;
1488         int hold_color = 0;
1489         char prtfile[PATH_MAX];
1490         char pagin;
1491         char cmd[SIZ];
1492         char targ[ROOMNAMELEN];
1493         char filename[PATH_MAX];
1494         char save_to[PATH_MAX];
1495         void *attachment = NULL;        /* Downloaded attachment */
1496         FILE *dest = NULL;      /* Alternate destination other than screen */
1497         int r;                  /* IPC response code */
1498         static int att_seq = 0; /* Attachment download sequence number */
1499         int rv = 0;             /* silence the stupid warn_unused_result warnings */
1500
1501         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1502
1503         if (msg_arr) {
1504                 free(msg_arr);
1505                 msg_arr = NULL;
1506         }
1507         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1508         if (r / 100 != 1) {
1509                 scr_printf("%s\n", cmd);
1510         }
1511         else {
1512                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++);
1513         }
1514
1515         if (num_msgs == 0) {
1516                 if (c == LastMessages) {
1517                         return;
1518                 }
1519                 scr_printf("*** There are no ");
1520                 if (c == NewMessages)
1521                         scr_printf("new ");
1522                 if (c == OldMessages)
1523                         scr_printf("old ");
1524                 scr_printf("messages in this room.\n");
1525                 return;
1526         }
1527
1528         /* this loop cycles through each message... */
1529         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1530         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1531                 while (msg_arr[a] == 0L) {
1532                         a = a + rdir;
1533                         if ((a == num_msgs) || (a == (-1)))
1534                                 return;
1535                 }
1536
1537               RAGAIN:pagin = ((arcflag == 0)
1538                          && (quotflag == 0)
1539                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1540
1541                 /* If we're doing a quote, set the screenwidth to 72 */
1542                 if (quotflag) {
1543                         hold_sw = screenwidth;
1544                         screenwidth = 72;
1545                 }
1546
1547                 /* If printing or archiving, set the screenwidth to 80 */
1548                 if (arcflag) {
1549                         hold_sw = screenwidth;
1550                         screenwidth = 80;
1551                 }
1552
1553                 /* clear parts list */
1554                 free_parts(last_message_parts);
1555                 last_message_parts = NULL;
1556
1557                 /* now read the message... */
1558                 e = read_message(ipc, msg_arr[a], pagin, dest);
1559
1560                 /* ...and set the screenwidth back if we have to */
1561                 if ((quotflag) || (arcflag)) {
1562                         screenwidth = hold_sw;
1563                 }
1564               RMSGREAD:
1565                 highest_msg_read = msg_arr[a];
1566                 if (quotflag) {
1567                         fclose(dest);
1568                         dest = NULL;
1569                         quotflag = 0;
1570                         enable_color = hold_color;
1571                         process_quote();
1572                         e = 'r';
1573                         goto DONE_QUOTING;
1574                 }
1575                 if (arcflag) {
1576                         fclose(dest);
1577                         dest = NULL;
1578                         arcflag = 0;
1579                         enable_color = hold_color;
1580                         f = fork();
1581                         if (f == 0) {
1582                                 if (freopen(prtfile, "r", stdin) == NULL) {
1583                                         /* we probably should handle the error condition here */
1584                                 }
1585                                 stty_ctdl(SB_RESTORE);
1586                                 ka_system(printcmd);
1587                                 stty_ctdl(SB_NO_INTR);
1588                                 unlink(prtfile);
1589                                 exit(0);
1590                         }
1591                         if (f > 0)
1592                                 do {
1593                                         g = wait(NULL);
1594                                 } while ((g != f) && (g >= 0));
1595                         scr_printf("Message printed.\n");
1596                 }
1597                 if (e == SIGQUIT)
1598                         return;
1599                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1600                     && (((room_flags & QR_MAILBOX) == 0)
1601                         || (rc_force_mail_prompts == 0))) {
1602                         e = 'n';
1603                 }
1604                 else {
1605                         color(DIM_WHITE);
1606                         scr_printf("(");
1607                         color(BRIGHT_WHITE);
1608                         scr_printf("%d", num_msgs - a - 1);
1609                         color(DIM_WHITE);
1610                         scr_printf(") ");
1611
1612                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1613                         if (rc_url_cmd[0] && num_urls)
1614                                 keyopt("<U>RLview ");
1615                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1616                                 keyopt("<I>mages ");
1617                         keyopt("<?>help -> ");
1618
1619                         do {
1620                                 e = (inkey() & 127);
1621                                 e = tolower(e);
1622
1623 /* return key same as <N> */ if (e == 10)
1624                                         e = 'n';
1625
1626 /* space key same as <N> */ if (e == 32)
1627                                         e = 'n';
1628
1629 /* del/move for aides only */
1630                                 if ((!is_room_aide)
1631                                     && ((room_flags & QR_MAILBOX) == 0)
1632                                     && ((room_flags2 & QR2_COLLABDEL) == 0)
1633                                     ) {
1634                                         if ((e == 'd') || (e == 'm'))
1635                                                 e = 0;
1636                                 }
1637
1638 /* print only if available */
1639                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1640                                         e = 0;
1641
1642 /* can't file if not allowed */
1643                                 if ((e == 'f')
1644                                     && (rc_allow_attachments == 0))
1645                                         e = 0;
1646
1647 /* link only if browser avail*/
1648                                 if ((e == 'u')
1649                                     && (IsEmptyStr(rc_url_cmd)))
1650                                         e = 0;
1651                                 if ((e == 'i')
1652                                     && (IsEmptyStr(imagecmd) || !has_images))
1653                                         e = 0;
1654                         } while ((e != 'a') && (e != 'n') && (e != 's')
1655                                  && (e != 'd') && (e != 'm') && (e != 'p')
1656                                  && (e != 'q') && (e != 'b') && (e != 'h')
1657                                  && (e != 'r') && (e != 'f') && (e != '?')
1658                                  && (e != 'u') && (e != 'c') && (e != 'y')
1659                                  && (e != 'i') && (e != 'o'));
1660                         switch (e) {
1661                         case 's':
1662                                 scr_printf("Stop");
1663                                 break;
1664                         case 'a':
1665                                 scr_printf("Again");
1666                                 break;
1667                         case 'd':
1668                                 scr_printf("Delete");
1669                                 break;
1670                         case 'm':
1671                                 scr_printf("Move");
1672                                 break;
1673                         case 'c':
1674                                 scr_printf("Copy");
1675                                 break;
1676                         case 'n':
1677                                 scr_printf("Next");
1678                                 break;
1679                         case 'p':
1680                                 scr_printf("Print");
1681                                 break;
1682                         case 'q':
1683                                 scr_printf("reply Quoted");
1684                                 break;
1685                         case 'b':
1686                                 scr_printf("Back");
1687                                 break;
1688                         case 'h':
1689                                 scr_printf("Header");
1690                                 break;
1691                         case 'r':
1692                                 scr_printf("Reply");
1693                                 break;
1694                         case 'o':
1695                                 scr_printf("Open attachments");
1696                                 break;
1697                         case 'f':
1698                                 scr_printf("File");
1699                                 break;
1700                         case 'u':
1701                                 scr_printf("URL's");
1702                                 break;
1703                         case 'y':
1704                                 scr_printf("mY next");
1705                                 break;
1706                         case 'i':
1707                                 break;
1708                         case '?':
1709                                 scr_printf("? <help>");
1710                                 break;
1711                         }
1712                         if (userflags & US_DISAPPEAR || e == 'i')
1713                                 scr_printf("\r%79s\r", "");
1714                         else
1715                                 scr_printf("\n");
1716                 }
1717               DONE_QUOTING:switch (e) {
1718                 case '?':
1719                         scr_printf("Options available here:\n"
1720                                    " ?  Help (prints this message)\n"
1721                                    " S  Stop reading immediately\n"
1722                                    " A  Again (repeats last message)\n"
1723                                    " N  Next (continue with next message)\n"
1724                                    " Y  My Next (continue with next message you authored)\n"
1725                                    " B  Back (go back to previous message)\n");
1726                         if ((is_room_aide) || (room_flags & QR_MAILBOX) || (room_flags2 & QR2_COLLABDEL)) {
1727                                 scr_printf(" D  Delete this message\n" " 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(" Q  Reply to this message, quoting portions of it\n"
1733                                    " H  Headers (display message headers only)\n");
1734                         if (is_mail)
1735                                 scr_printf(" R  Reply to this message\n");
1736                         if (rc_allow_attachments) {
1737                                 scr_printf(" O  (Open attachments)\n");
1738                                 scr_printf(" F  (save attachments to a File)\n");
1739                         }
1740                         if (!IsEmptyStr(rc_url_cmd))
1741                                 scr_printf(" U  (list URL's for display)\n");
1742                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1743                                 scr_printf(" I  Image viewer\n");
1744                         scr_printf("\n");
1745                         goto RMSGREAD;
1746                 case 'p':
1747                         scr_flush();
1748                         dest = fopen(prtfile, "w");
1749                         arcflag = 1;
1750                         hold_color = enable_color;
1751                         enable_color = 0;
1752                         goto RAGAIN;
1753                 case 'q':
1754                         scr_flush();
1755                         dest = fopen(temp2, "w");
1756                         quotflag = 1;
1757                         hold_color = enable_color;
1758                         enable_color = 0;
1759                         goto RAGAIN;
1760                 case 's':
1761                         return;
1762                 case 'a':
1763                         goto RAGAIN;
1764                 case 'b':
1765                         a = a - (rdir * 2);
1766                         break;
1767                 case 'm':
1768                 case 'c':
1769                         newprompt("Enter target room: ", targ, ROOMNAMELEN - 1);
1770                         if (!IsEmptyStr(targ)) {
1771                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0), msg_arr[a], targ, cmd);
1772                                 scr_printf("%s\n", cmd);
1773                                 if (r / 100 == 2)
1774                                         msg_arr[a] = 0L;
1775                         }
1776                         else {
1777                                 goto RMSGREAD;
1778                         }
1779                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1780                                 goto RMSGREAD;  /* the logic here sucks */
1781                         break;
1782                 case 'o':
1783                 case 'f':
1784                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1785                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a], filename, &attachment, progress, cmd);
1786                         if (r / 100 != 2) {
1787                                 scr_printf("%s\n", cmd);
1788                         }
1789                         else {
1790                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1791                                 /*
1792                                  * Part 1 won't have a filename; use the
1793                                  * subject of the message instead. IO
1794                                  */
1795                                 if (IsEmptyStr(filename)) {
1796                                         strcpy(filename, reply_subject);
1797                                 }
1798                                 if (e == 'o') { /* open attachment */
1799                                         mkdir(tempdir, 0700);
1800                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s", tempdir, ++att_seq, filename);
1801                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1802                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1803                                         rv = system(cmd);
1804                                         if (rv != 0)
1805                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1806                                 }
1807                                 else {  /* save attachment to disk */
1808                                         destination_directory(save_to, filename);
1809                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1810                                 }
1811                         }
1812                         if (attachment) {
1813                                 free(attachment);
1814                                 attachment = NULL;
1815                         }
1816                         goto RMSGREAD;
1817                 case 'd':
1818                         scr_printf("*** Delete this message? ");
1819                         if (yesno() == 1) {
1820                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1821                                 scr_printf("%s\n", cmd);
1822                                 if (r / 100 == 2)
1823                                         msg_arr[a] = 0L;
1824                         }
1825                         else {
1826                                 goto RMSGREAD;
1827                         }
1828                         break;
1829                 case 'h':
1830                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1831                         goto RMSGREAD;
1832                 case 'r':
1833                         savedpos = num_msgs;
1834                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1835                         num_msgs = savedpos;
1836                         goto RMSGREAD;
1837                 case 'u':
1838                         list_urls(ipc);
1839                         goto RMSGREAD;
1840                 case 'i':
1841                         image_view(ipc, msg_arr[a]);
1842                         goto RMSGREAD;
1843                 case 'y':
1844                         {       /* hack hack hack */
1845                                 /* find the next message by me, stay here if we find nothing */
1846                                 int finda;
1847                                 int lasta = a;
1848                                 for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir) {
1849                                         /* This is repetitively dumb, but that's what computers are for.
1850                                            We have to load up messages until we find one by us */
1851                                         char buf[SIZ];
1852                                         int founda = 0;
1853                                         struct ctdlipcmessage *msg = NULL;
1854
1855                                         /* read the header so we can get 'from=' */
1856                                         r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1857                                         if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1858                                                 a = lasta;      /* meesa current */
1859                                                 founda = 1;
1860                                         }
1861
1862                                         free(msg);
1863
1864                                         if (founda)
1865                                                 break;  /* for */
1866                                         lasta = finda;  /* keep one behind or we skip on the reentrance to the for */
1867                                 }       /* for */
1868                         }       /* case 'y' */
1869                 }               /* switch */
1870         }                       /* end for loop */
1871 }                               /* end read routine */
1872
1873
1874 /*
1875  * View and edit a system message
1876  */
1877 void edit_system_message(CtdlIPC * ipc, char *which_message) {
1878         char desc[SIZ];
1879         char read_cmd[SIZ];
1880         char write_cmd[SIZ];
1881
1882         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1883         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1884         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1885         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1886 }
1887
1888
1889 /*
1890  * Loads the contents of a file into memory.  Caller must free the allocated memory.
1891  */
1892 char *load_message_from_file(FILE * src) {
1893         size_t i;
1894         size_t got = 0;
1895         char *dest = NULL;
1896
1897         fseek(src, 0, SEEK_END);
1898         i = ftell(src);
1899         rewind(src);
1900
1901         dest = (char *) calloc(1, i + 1);
1902         if (!dest)
1903                 return NULL;
1904
1905         while (got < i) {
1906                 size_t g;
1907
1908                 g = fread(dest + got, 1, i - got, src);
1909                 got += g;
1910                 if (g < i - got) {
1911                         /* Interrupted system call, keep going */
1912                         if (errno == EINTR)
1913                                 continue;
1914                         /* At this point we have either EOF or error */
1915                         i = got;
1916                         break;
1917                 }
1918                 dest[i] = 0;
1919         }
1920
1921         return dest;
1922 }