textclient/src/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2016 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <sys/types.h>
  19 #include <fcntl.h>
  20 #include <stdio.h>
  21 #include <ctype.h>
  22 #include <string.h>
  23 #include <signal.h>
  24 #include <errno.h>
  25 #include <limits.h>
  26 #include <sys/wait.h>
  27 #include <sys/stat.h>
  28
  29 #if TIME_WITH_SYS_TIME
  30 # include <sys/time.h>
  31 # include <time.h>
  32 #else
  33 # if HAVE_SYS_TIME_H
  34 #  include <sys/time.h>
  35 # else
  36 #  include <time.h>
  37 # endif
  38 #endif
  39
  40 #ifdef HAVE_PTHREAD_H
  41 #include <pthread.h>
  42 #endif
  43
  44 #include <stdarg.h>
  45 #include <libcitadel.h>
  46 #include "citadel_ipc.h"
  47 #include "citadel_decls.h"
  48 #include "messages.h"
  49 #include "commands.h"
  50 #include "tuiconfig.h"
  51 #include "rooms.h"
  52 #include "screen.h"
  53
  54 #define MAXWORDBUF SIZ
  55 #define NO_REPLY_TO     "nobody ... xxxxxx"
  56
  57 char reply_to[SIZ];
  58 char reply_subject[SIZ];
  59 char reply_references[SIZ];
  60 char reply_inreplyto[SIZ];
  61
  62 struct cittext {
  63         struct cittext *next;
  64         char text[MAXWORDBUF];
  65 };
  66
  67 void stty_ctdl(int cmd);
  68 int haschar(const char *st, int ch);
  69 int file_checksum(char *filename);
  70 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  71
  72 unsigned long *msg_arr = NULL;
  73 int msg_arr_size = 0;
  74 int num_msgs;
  75 extern char room_name[];
  76 extern char tempdir[];
  77 extern unsigned room_flags;
  78 extern unsigned room_flags2;
  79 extern int entmsg_ok;
  80 extern long highest_msg_read;
  81 extern char temp[];
  82 extern char temp2[];
  83 extern int screenwidth;
  84 extern int screenheight;
  85 extern long maxmsgnum;
  86 extern char is_mail;
  87 extern char is_aide;
  88 extern char is_room_aide;
  89 extern char fullname[];
  90 extern char axlevel;
  91 extern unsigned userflags;
  92 extern char sigcaught;
  93 extern char printcmd[];
  94 extern int rc_allow_attachments;
  95 extern int rc_display_message_numbers;
  96 extern int rc_force_mail_prompts;
  97 extern int editor_pid;
  98 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  99 int num_urls = 0;
 100 char urls[MAXURLS][SIZ];
 101 char imagecmd[SIZ];
 102 int has_images = 0;                             /* Current msg has images */
 103 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 104
 105
 106
 107 void ka_sigcatch(int signum)
 108 {
 109         alarm(S_KEEPALIVE);
 110         signal(SIGALRM, ka_sigcatch);
 111         CtdlIPCNoop(ipc_for_signal_handlers);
 112 }
 113
 114
 115 /*
 116  * server keep-alive version of wait() (needed for external editor)
 117  */
 118 pid_t ka_wait(int *kstatus)
 119 {
 120         pid_t p;
 121
 122         alarm(S_KEEPALIVE);
 123         signal(SIGALRM, ka_sigcatch);
 124         do {
 125                 errno = 0;
 126                 p = wait(kstatus);
 127         } while (errno == EINTR);
 128         signal(SIGALRM, SIG_IGN);
 129         alarm(0);
 130         return (p);
 131 }
 132
 133
 134 /*
 135  * version of system() that uses ka_wait()
 136  */
 137 int ka_system(char *shc)
 138 {
 139         pid_t childpid;
 140         pid_t waitpid;
 141         int retcode;
 142
 143         childpid = fork();
 144         if (childpid < 0) {
 145                 color(BRIGHT_RED);
 146                 perror("Cannot fork");
 147                 color(DIM_WHITE);
 148                 return ((pid_t) childpid);
 149         }
 150
 151         if (childpid == 0) {
 152                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 153                 exit(127);
 154         }
 155
 156         if (childpid > 0) {
 157                 do {
 158                         waitpid = ka_wait(&retcode);
 159                 } while (waitpid != childpid);
 160                 return (retcode);
 161         }
 162
 163         return (-1);
 164 }
 165
 166
 167
 168 /*
 169  * add a newline to the buffer...
 170  */
 171 void add_newline(struct cittext *textlist)
 172 {
 173         struct cittext *ptr;
 174
 175         ptr = textlist;
 176         while (ptr->next != NULL)
 177                 ptr = ptr->next;
 178
 179         while (ptr->text[strlen(ptr->text) - 1] == 32)
 180                 ptr->text[strlen(ptr->text) - 1] = 0;
 181         /* strcat(ptr->text,"\n"); */
 182
 183         ptr->next = (struct cittext *)
 184             malloc(sizeof(struct cittext));
 185         ptr = ptr->next;
 186         ptr->next = NULL;
 187         strcpy(ptr->text, "");
 188 }
 189
 190
 191 /*
 192  * add a word to the buffer...
 193  */
 194 void add_word(struct cittext *textlist, char *wordbuf)
 195 {
 196         struct cittext *ptr;
 197
 198         ptr = textlist;
 199         while (ptr->next != NULL)
 200                 ptr = ptr->next;
 201
 202         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 203                 ptr->next = (struct cittext *)
 204                     malloc(sizeof(struct cittext));
 205                 ptr = ptr->next;
 206                 ptr->next = NULL;
 207                 strcpy(ptr->text, "");
 208         }
 209
 210         strcat(ptr->text, wordbuf);
 211         strcat(ptr->text, " ");
 212 }
 213
 214
 215 /*
 216  * begin editing of an opened file pointed to by fp
 217  */
 218 void citedit(FILE *fp)
 219 {
 220         int a, prev, finished, b, last_space;
 221         int appending = 0;
 222         struct cittext *textlist = NULL;
 223         struct cittext *ptr;
 224         char wordbuf[MAXWORDBUF];
 225         int rv = 0;
 226
 227         /* first, load the text into the buffer */
 228         fseek(fp, 0L, 0);
 229         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 230         textlist->next = NULL;
 231         strcpy(textlist->text, "");
 232
 233         strcpy(wordbuf, "");
 234         prev = (-1);
 235         while (a = getc(fp), a >= 0) {
 236                 appending = 1;
 237                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 238                         add_word(textlist, wordbuf);
 239                         strcpy(wordbuf, "");
 240                         if ((prev == 13) || (prev == 10)) {
 241                                 add_word(textlist, "\n");
 242                                 add_newline(textlist);
 243                                 add_word(textlist, "");
 244                         }
 245                 } else {
 246                         wordbuf[strlen(wordbuf) + 1] = 0;
 247                         wordbuf[strlen(wordbuf)] = a;
 248                 }
 249                 if (strlen(wordbuf) + 3 > screenwidth) {
 250                         add_word(textlist, wordbuf);
 251                         strcpy(wordbuf, "");
 252                 }
 253                 prev = a;
 254         }
 255
 256         /* get text */
 257         finished = 0;
 258         prev = (appending ? 13 : (-1));
 259         strcpy(wordbuf, "");
 260         async_ka_start();
 261         do {
 262                 a = inkey();
 263                 if (a == 10)
 264                         a = 13;
 265                 if (a == 9)
 266                         a = 32;
 267                 if (a == 127)
 268                         a = 8;
 269
 270                 if ((a != 32) && (prev == 13)) {
 271                         add_word(textlist, "\n");
 272                         scr_printf(" ");
 273                 }
 274
 275                 if ((a == 32) && (prev == 13)) {
 276                         add_word(textlist, "\n");
 277                         add_newline(textlist);
 278                 }
 279
 280                 if (a == 8) {
 281                         if (!IsEmptyStr(wordbuf)) {
 282                                 wordbuf[strlen(wordbuf) - 1] = 0;
 283                                 scr_putc(8);
 284                                 scr_putc(32);
 285                                 scr_putc(8);
 286                         }
 287                 } else if (a == 23) {
 288                         do {
 289                                 wordbuf[strlen(wordbuf) - 1] = 0;
 290                                 scr_putc(8);
 291                                 scr_putc(32);
 292                                 scr_putc(8);
 293                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 294                 } else if (a == 13) {
 295                         scr_printf("\n");
 296                         if (IsEmptyStr(wordbuf))
 297                                 finished = 1;
 298                         else {
 299                                 for (b = 0; b < strlen(wordbuf); ++b)
 300                                         if (wordbuf[b] == 32) {
 301                                                 wordbuf[b] = 0;
 302                                                 add_word(textlist,
 303                                                          wordbuf);
 304                                                 strcpy(wordbuf,
 305                                                        &wordbuf[b + 1]);
 306                                                 b = 0;
 307                                         }
 308                                 add_word(textlist, wordbuf);
 309                                 strcpy(wordbuf, "");
 310                         }
 311                 } else {
 312                         scr_putc(a);
 313                         wordbuf[strlen(wordbuf) + 1] = 0;
 314                         wordbuf[strlen(wordbuf)] = a;
 315                 }
 316                 if ((strlen(wordbuf) + 3) > screenwidth) {
 317                         last_space = (-1);
 318                         for (b = 0; b < strlen(wordbuf); ++b)
 319                                 if (wordbuf[b] == 32)
 320                                         last_space = b;
 321                         if (last_space >= 0) {
 322                                 for (b = 0; b < strlen(wordbuf); ++b)
 323                                         if (wordbuf[b] == 32) {
 324                                                 wordbuf[b] = 0;
 325                                                 add_word(textlist,
 326                                                          wordbuf);
 327                                                 strcpy(wordbuf,
 328                                                        &wordbuf[b + 1]);
 329                                                 b = 0;
 330                                         }
 331                                 for (b = 0; b < strlen(wordbuf); ++b) {
 332                                         scr_putc(8);
 333                                         scr_putc(32);
 334                                         scr_putc(8);
 335                                 }
 336                                 scr_printf("\n%s", wordbuf);
 337                         } else {
 338                                 add_word(textlist, wordbuf);
 339                                 strcpy(wordbuf, "");
 340                                 scr_printf("\n");
 341                         }
 342                 }
 343                 prev = a;
 344         } while (finished == 0);
 345         async_ka_end();
 346
 347         /* write the buffer back to disk */
 348         fseek(fp, 0L, 0);
 349         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 350                 fprintf(fp, "%s", ptr->text);
 351         }
 352         putc(10, fp);
 353         fflush(fp);
 354         rv = ftruncate(fileno(fp), ftell(fp));
 355         if (rv < 0)
 356                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 357
 358
 359         /* and deallocate the memory we used */
 360         while (textlist != NULL) {
 361                 ptr = textlist->next;
 362                 free(textlist);
 363                 textlist = ptr;
 364         }
 365 }
 366
 367
 368 /*
 369  * Free the struct parts
 370  */
 371 void free_parts(struct parts *p)
 372 {
 373         struct parts *a_part = p;
 374
 375         while (a_part) {
 376                 struct parts *q;
 377
 378                 q = a_part;
 379                 a_part = a_part->next;
 380                 free(q);
 381         }
 382 }
 383
 384
 385 /*
 386  * This is a mini RFC2047 decoder.
 387  * It only handles strings encoded from UTF-8 as Quoted-printable.
 388  */
 389 void mini_2047_decode(char *s) {
 390         if (!s) return;
 391
 392         char *qstart = strstr(s, "=?UTF-8?Q?");
 393         if (!qstart) return;
 394
 395         char *qend = strstr(s, "?=");
 396         if (!qend) return;
 397
 398         if (qend <= qstart) return;
 399
 400         strcpy(qstart, &qstart[10]);
 401         qend -= 10;
 402
 403         char *p = qstart;
 404         while (p < qend) {
 405
 406                 if (p[0] == '=') {
 407
 408                         char ch[3];
 409                         ch[0] = p[1];
 410                         ch[1] = p[2];
 411                         ch[2] = p[3];
 412                         int c;
 413                         sscanf(ch, "%02x", &c);
 414                         p[0] = c;
 415                         strcpy(&p[1], &p[3]);
 416                         qend -= 2;
 417                 }
 418
 419                 if (p[0] == '_') {
 420                         p[0] = ' ';
 421                 }
 422
 423                 ++p;
 424         }
 425
 426         strcpy(qend, &qend[2]);
 427 }
 428
 429 /*
 430  * Read a message from the server
 431  */
 432 int read_message(CtdlIPC *ipc,
 433         long num,   /* message number */
 434         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 435         FILE *dest) /* Destination file, NULL for screen */
 436 {
 437         char buf[SIZ];
 438         char now[SIZ];
 439         int format_type = 0;
 440         int fr = 0;
 441         int nhdr = 0;
 442         struct ctdlipcmessage *message = NULL;
 443         int r;                          /* IPC response code */
 444         char *converted_text = NULL;
 445         char *lineptr;
 446         char *nextline;
 447         char *searchptr;
 448         int i;
 449         char ch;
 450         int linelen;
 451         int final_line_is_blank = 0;
 452
 453         has_images = 0;
 454
 455         sigcaught = 0;
 456         stty_ctdl(1);
 457
 458         strcpy(reply_to, NO_REPLY_TO);
 459         strcpy(reply_subject, "");
 460         strcpy(reply_references, "");
 461         strcpy(reply_inreplyto, "");
 462
 463         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 464         if (r / 100 != 1) {
 465                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 466                 stty_ctdl(0);
 467                 free(message->text);
 468                 free_parts(message->attachments);
 469                 free(message);
 470                 return (0);
 471         }
 472
 473         if (dest) {
 474                 fprintf(dest, "\n ");
 475         } else {
 476                 scr_printf("\n");
 477                 if (pagin != 2)
 478                         scr_printf(" ");
 479         }
 480         if (pagin == 1 && !dest) {
 481                 color(BRIGHT_CYAN);
 482         }
 483
 484         /* View headers only */
 485         if (pagin == 2) {
 486                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 487                                 message->nhdr ? "yes" : "no",
 488                                 message->author, message->type,
 489                                 message->msgid);
 490                 if (!IsEmptyStr(message->subject)) {
 491                         scr_printf("subj=%s\n", message->subject);
 492                 }
 493                 if (!IsEmptyStr(message->email)) {
 494                         scr_printf("rfca=%s\n", message->email);
 495                 }
 496                 scr_printf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 497                                 message->hnod, message->room,
 498                                 message->node,
 499                                 asctime(localtime(&message->time)));
 500                 if (!IsEmptyStr(message->recipient)) {
 501                         scr_printf("rcpt=%s\n", message->recipient);
 502                 }
 503                 if (message->attachments) {
 504                         struct parts *ptr;
 505
 506                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 507                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 508                                         ptr->name, ptr->filename, ptr->number,
 509                                         ptr->disposition, ptr->mimetype,
 510                                         ptr->length
 511                                 );
 512                         }
 513                 }
 514                 scr_printf("\n");
 515                 stty_ctdl(0);
 516                 free(message->text);
 517                 free_parts(message->attachments);
 518                 free(message);
 519                 return (0);
 520         }
 521
 522         if (rc_display_message_numbers) {
 523                 if (dest) {
 524                         fprintf(dest, "[#%s] ", message->msgid);
 525                 } else {
 526                         color(DIM_WHITE);
 527                         scr_printf("[");
 528                         color(BRIGHT_WHITE);
 529                         scr_printf("#%s", message->msgid);
 530                         color(DIM_WHITE);
 531                         scr_printf("] ");
 532                 }
 533         }
 534         if (nhdr == 1 && !is_room_aide) {
 535                 if (dest) {
 536                         fprintf(dest, " ****");
 537                 } else {
 538                         scr_printf(" ****");
 539                 }
 540         } else {
 541                 fmt_date(now, sizeof now, message->time, 0);
 542                 if (dest) {
 543                         fprintf(dest, "%s from %s ", now, message->author);
 544                         if (!IsEmptyStr(message->email)) {
 545                                 fprintf(dest, "<%s> ", message->email);
 546                         }
 547                 } else {
 548                         color(BRIGHT_CYAN);
 549                         scr_printf("%s ", now);
 550                         color(DIM_WHITE);
 551                         scr_printf("from ");
 552                         color(BRIGHT_CYAN);
 553                         scr_printf("%s ", message->author);
 554                         if (!IsEmptyStr(message->email)) {
 555                                 color(DIM_WHITE);
 556                                 scr_printf("<");
 557                                 color(BRIGHT_BLUE);
 558                                 scr_printf("%s", message->email);
 559                                         color(DIM_WHITE);
 560                                 scr_printf("> ");
 561                         }
 562                 }
 563                 if (!IsEmptyStr(message->node)) {
 564                         if ((room_flags & QR_NETWORK)
 565                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 566                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 567                                 if (IsEmptyStr(message->email)) {
 568                                         if (dest) {
 569                                                 fprintf(dest, "@%s ", message->node);
 570                                         } else {
 571                                                 color(DIM_WHITE);
 572                                                 scr_printf("@");
 573                                                 color(BRIGHT_YELLOW);
 574                                                 scr_printf("%s ", message->node);
 575                                         }
 576                                 }
 577                         }
 578                 }
 579                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 580                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 581                         if (dest) {
 582                                 fprintf(dest, "(%s) ", message->hnod);
 583                         } else {
 584                                 color(DIM_WHITE);
 585                                 scr_printf("(");
 586                                 color(BRIGHT_WHITE);
 587                                 scr_printf("%s", message->hnod);
 588                                 color(DIM_WHITE);
 589                                 scr_printf(") ");
 590                         }
 591                 }
 592                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 593                         if (dest) {
 594                                 fprintf(dest, "in %s> ", message->room);
 595                         } else {
 596                                 color(DIM_WHITE);
 597                                 scr_printf("in ");
 598                                 color(BRIGHT_MAGENTA);
 599                                 scr_printf("%s> ", message->room);
 600                         }
 601                 }
 602                 if (!IsEmptyStr(message->recipient)) {
 603                         if (dest) {
 604                                 fprintf(dest, "to %s ", message->recipient);
 605                         } else {
 606                                 color(DIM_WHITE);
 607                                 scr_printf("to ");
 608                                 color(BRIGHT_CYAN);
 609                                 scr_printf("%s ", message->recipient);
 610                         }
 611                 }
 612         }
 613
 614         if (dest) {
 615                 fprintf(dest, "\n");
 616         } else {
 617                 scr_printf("\n");
 618         }
 619
 620         /* Set the reply-to address to an Internet e-mail address if possible
 621          */
 622         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 623                 if (!IsEmptyStr(message->author)) {
 624                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 625                 }
 626                 else {
 627                         safestrncpy(reply_to, message->email, sizeof reply_to);
 628                 }
 629         }
 630
 631         /* But if we can't do that, set it to a Citadel address.
 632          */
 633         if (!strcmp(reply_to, NO_REPLY_TO)) {
 634                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 635                          message->author, message->node);
 636         }
 637
 638         if (message->msgid != NULL) {
 639                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 640         }
 641
 642         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 643                 safestrncpy(reply_references, message->references, sizeof reply_references);
 644         }
 645
 646         if (message->subject != NULL) {
 647                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 648                 if (!IsEmptyStr(message->subject)) {
 649                         if (dest) {
 650                                 fprintf(dest, "Subject: %s\n", message->subject);
 651                         } else {
 652                                 color(DIM_WHITE);
 653                                 scr_printf("Subject: ");
 654                                 color(BRIGHT_CYAN);
 655                                 mini_2047_decode(message->subject);
 656                                 scr_printf("%s\n", message->subject);
 657                         }
 658                 }
 659         }
 660
 661         if (pagin == 1 && !dest) {
 662                 color(BRIGHT_WHITE);
 663         }
 664
 665         /******* end of header output, start of message text output *******/
 666
 667         /*
 668          * Convert HTML to plain text, formatting for the actual width
 669          * of the client screen.
 670          */
 671         if (!strcasecmp(message->content_type, "text/html")) {
 672                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 673                 if (converted_text != NULL) {
 674                         free(message->text);
 675                         message->text = converted_text;
 676                         format_type = 1;
 677                 }
 678         }
 679
 680         /* Text/plain is a different type */
 681         if (!strcasecmp(message->content_type, "text/plain")) {
 682                 format_type = 1;
 683         }
 684
 685         /* Extract URL's */
 686         static char *urlprefixes[] = {
 687                 "http://",
 688                 "https://",
 689                 "ftp://"
 690         };
 691         int p = 0;
 692         num_urls = 0;   /* Start with a clean slate */
 693         for (p=0; p<(sizeof urlprefixes / sizeof(char *)); ++p) {
 694                 searchptr = message->text;
 695                 while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 696                         searchptr = strstr(searchptr, urlprefixes[p]);
 697                         if (searchptr != NULL) {
 698                                 safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 699                                 for (i = 0; i < strlen(urls[num_urls]); i++) {
 700                                         ch = urls[num_urls][i];
 701                                         if (ch == '>' || ch == '\"' || ch == ')' ||
 702                                             ch == ' ' || ch == '\n') {
 703                                                 urls[num_urls][i] = 0;
 704                                                 break;
 705                                         }
 706                                 }
 707                                 num_urls++;
 708                                 ++searchptr;
 709                         }
 710                 }
 711         }
 712
 713         /*
 714          * Here we go
 715          */
 716         if (format_type == 0) {
 717                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 718         } else {
 719                 /* renderer for text/plain */
 720
 721                 lineptr = message->text;
 722
 723                 do {
 724                         nextline = strchr(lineptr, '\n');
 725                         if (nextline != NULL) {
 726                                 *nextline = 0;
 727                                 ++nextline;
 728                                 if (*nextline == 0) nextline = NULL;
 729                         }
 730
 731                         if (sigcaught == 0) {
 732                                 linelen = strlen(lineptr);
 733                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 734                                         lineptr[--linelen] = 0;
 735                                 }
 736                                 if (dest) {
 737                                         fprintf(dest, "%s\n", lineptr);
 738                                 } else {
 739                                         scr_printf("%s\n", lineptr);
 740                                 }
 741                         }
 742                         if (lineptr[0] == 0) final_line_is_blank = 1;
 743                         else final_line_is_blank = 0;
 744                         lineptr = nextline;
 745                 } while (nextline);
 746                 fr = sigcaught;
 747         }
 748         if (!final_line_is_blank) {
 749                 if (dest) {
 750                         fprintf(dest, "\n");
 751                 }
 752                 else {
 753                         scr_printf("\n");
 754                         fr = sigcaught;
 755                 }
 756         }
 757
 758         /* Enumerate any attachments */
 759         if ( (pagin == 1) && (message->attachments) ) {
 760                 struct parts *ptr;
 761
 762                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 763                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 764                            || (!strcasecmp(ptr->disposition, "inline"))
 765                            || (!strcasecmp(ptr->disposition, ""))
 766                         ) {
 767                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 768                                    && (!IsEmptyStr(ptr->mimetype))
 769                                 ) {
 770                                         color(DIM_WHITE);
 771                                         scr_printf("Part ");
 772                                         color(BRIGHT_MAGENTA);
 773                                         scr_printf("%s", ptr->number);
 774                                         color(DIM_WHITE);
 775                                         scr_printf(": ");
 776                                         color(BRIGHT_CYAN);
 777                                         scr_printf("%s", ptr->filename);
 778                                         color(DIM_WHITE);
 779                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 780                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 781                                                 has_images++;
 782                                         }
 783                                 }
 784                         }
 785                 }
 786         }
 787
 788         /* Save the attachments info for later */
 789         last_message_parts = message->attachments;
 790
 791         /* Now we're done */
 792         free(message->text);
 793         free(message);
 794
 795         if (pagin == 1 && !dest)
 796                 color(DIM_WHITE);
 797         stty_ctdl(0);
 798         return (fr);
 799 }
 800
 801 /*
 802  * replace string function for the built-in editor
 803  */
 804 void replace_string(char *filename, long int startpos)
 805 {
 806         char buf[512];
 807         char srch_str[128];
 808         char rplc_str[128];
 809         FILE *fp;
 810         int a;
 811         long rpos, wpos;
 812         char *ptr;
 813         int substitutions = 0;
 814         long msglen = 0L;
 815         int rv;
 816
 817         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str)-1) );
 818         if (IsEmptyStr(srch_str)) {
 819                 return;
 820         }
 821
 822         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str)-1) );
 823
 824         fp = fopen(filename, "r+");
 825         if (fp == NULL) {
 826                 return;
 827         }
 828
 829         wpos = startpos;
 830         fseek(fp, startpos, 0);
 831         strcpy(buf, "");
 832         while (a = getc(fp), a > 0) {
 833                 ++msglen;
 834                 buf[strlen(buf) + 1] = 0;
 835                 buf[strlen(buf)] = a;
 836                 if (strlen(buf) >= strlen(srch_str)) {
 837                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 838                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 839                                 strcpy(ptr, rplc_str);
 840                                 ++substitutions;
 841                         }
 842                 }
 843                 if (strlen(buf) > 384) {
 844                         rpos = ftell(fp);
 845                         fseek(fp, wpos, 0);
 846                         rv = fwrite((char *) buf, 128, 1, fp);
 847                         if (rv < 0) {
 848                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 849                                 break; /*whoopsi! */
 850                         }
 851                         strcpy(buf, &buf[128]);
 852                         wpos = ftell(fp);
 853                         fseek(fp, rpos, 0);
 854                 }
 855         }
 856         fseek(fp, wpos, 0);
 857         if (!IsEmptyStr(buf)) {
 858                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 859         }
 860         wpos = ftell(fp);
 861         fclose(fp);
 862         rv = truncate(filename, wpos);
 863         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 864 }
 865
 866 /*
 867  * Function to begin composing a new message
 868  */
 869 int client_make_message(CtdlIPC *ipc,
 870                         char *filename,         /* temporary file name */
 871                         char *recipient,        /* NULL if it's not mail */
 872                         int is_anonymous,
 873                         int format_type,
 874                         int mode,
 875                         char *subject,          /* buffer to store subject line */
 876                         int subject_required
 877 ) {
 878         FILE *fp;
 879         int a, b, e_ex_code;
 880         long beg;
 881         char datestr[SIZ];
 882         char header[SIZ];
 883         int cksum = 0;
 884
 885         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 886                 scr_printf("*** No editor available; using built-in editor.\n");
 887                 mode = 0;
 888         }
 889
 890         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 891         header[0] = 0;
 892
 893         if (room_flags & QR_ANONONLY && !recipient) {
 894                 snprintf(header, sizeof header, " ****");
 895         }
 896         else {
 897                 snprintf(header, sizeof header,
 898                         " %s from %s",
 899                         datestr,
 900                         (is_anonymous ? "[anonymous]" : fullname)
 901                         );
 902                 if (!IsEmptyStr(recipient)) {
 903                         size_t tmp = strlen(header);
 904                         snprintf(&header[tmp], sizeof header - tmp,
 905                                 " to %s", recipient);
 906                 }
 907         }
 908         scr_printf("%s\n", header);
 909         if (subject != NULL) if (!IsEmptyStr(subject)) {
 910                 scr_printf("Subject: %s\n", subject);
 911         }
 912
 913         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 914                 newprompt("Subject: ", subject, 70);
 915         }
 916
 917         if (mode == 1) {
 918                 scr_printf("(Press ctrl-d when finished)\n");
 919         }
 920
 921         if (mode == 0) {
 922                 fp = fopen(filename, "r");
 923                 if (fp != NULL) {
 924                         fmout(screenwidth, fp, NULL, NULL, 0);
 925                         beg = ftell(fp);
 926                         if (beg < 0)
 927                                 scr_printf("failed to get stream position %s\n",
 928                                            strerror(errno));
 929                         fclose(fp);
 930                 } else {
 931                         fp = fopen(filename, "w");
 932                         if (fp == NULL) {
 933                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 934                                         filename, strerror(errno)
 935                                 );
 936                         return(1);
 937                         }
 938                         fclose(fp);
 939                 }
 940         }
 941
 942 ME1:    switch (mode) {
 943
 944         case 0:
 945                 fp = fopen(filename, "r+");
 946                 if (fp == NULL) {
 947                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 948                                 filename, strerror(errno)
 949                         );
 950                         return(1);
 951                 }
 952                 citedit(fp);
 953                 fclose(fp);
 954                 goto MECR;
 955
 956         case 1:
 957                 fp = fopen(filename, "a");
 958                 if (fp == NULL) {
 959                         scr_printf("*** Error opening temp file!\n"
 960                                 "    %s: %s\n",
 961                                 filename, strerror(errno));
 962                         return(1);
 963                 }
 964                 do {
 965                         a = inkey();
 966                         if (a == 255)
 967                                 a = 32;
 968                         if (a == 13)
 969                                 a = 10;
 970                         if (a != 4) {
 971                                 putc(a, fp);
 972                                 scr_putc(a);
 973                         }
 974                         if (a == 10)
 975                                 scr_putc(10);
 976                 } while (a != 4);
 977                 fclose(fp);
 978                 break;
 979
 980         case 2:
 981         default:        /* allow 2+ modes */
 982                 e_ex_code = 1;  /* start with a failed exit code */
 983                 stty_ctdl(SB_RESTORE);
 984                 editor_pid = fork();
 985                 cksum = file_checksum(filename);
 986                 if (editor_pid == 0) {
 987                         char tmp[SIZ];
 988
 989                         chmod(filename, 0600);
 990                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 991                         putenv(tmp);
 992                         execlp(editor_path, editor_path, filename, NULL);
 993                         exit(1);
 994                 }
 995                 if (editor_pid > 0)
 996                         do {
 997                                 e_ex_code = 0;
 998                                 b = ka_wait(&e_ex_code);
 999                         } while ((b != editor_pid) && (b >= 0));
1000                 editor_pid = (-1);
1001                 stty_ctdl(0);
1002                 break;
1003         }
1004
1005 MECR:   if (mode >= 2) {
1006                 if (file_checksum(filename) == cksum) {
1007                         scr_printf("*** Aborted message.\n");
1008                         e_ex_code = 1;
1009                 }
1010                 if (e_ex_code == 0) {
1011                         goto MEFIN;
1012                 }
1013                 goto MEABT2;
1014         }
1015
1016         b = keymenu("Entry command (? for options)",
1017                 "<A>bort|"
1018                 "<C>ontinue|"
1019                 "<S>ave message|"
1020                 "<P>rint formatted|"
1021                 "add s<U>bject|"
1022                 "<R>eplace string|"
1023                 "<H>old message"
1024         );
1025
1026         if (b == 'a') goto MEABT;
1027         if (b == 'c') goto ME1;
1028         if (b == 's') goto MEFIN;
1029         if (b == 'p') {
1030                 scr_printf(" %s from %s", datestr, fullname);
1031                 if (!IsEmptyStr(recipient)) {
1032                         scr_printf(" to %s", recipient);
1033                 }
1034                 scr_printf("\n");
1035                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1036                         scr_printf("Subject: %s\n", subject);
1037                 }
1038                 fp = fopen(filename, "r");
1039                 if (fp != NULL) {
1040                         fmout(screenwidth, fp, NULL, NULL, 0);
1041                         beg = ftell(fp);
1042                         if (beg < 0)
1043                                 scr_printf("failed to get stream position %s\n",
1044                                            strerror(errno));
1045                         fclose(fp);
1046                 }
1047                 goto MECR;
1048         }
1049         if (b == 'r') {
1050                 replace_string(filename, 0L);
1051                 goto MECR;
1052         }
1053         if (b == 'h') {
1054                 return (2);
1055         }
1056         if (b == 'u') {
1057                 if (subject != NULL) {
1058                         newprompt("Subject: ", subject, 70);
1059                 }
1060                 goto MECR;
1061         }
1062
1063 MEFIN:  return (0);
1064
1065 MEABT:  scr_printf("Are you sure? ");
1066         if (yesno() == 0) {
1067                 goto ME1;
1068         }
1069 MEABT2: unlink(filename);
1070         return (2);
1071 }
1072
1073
1074 /*
1075  * Make sure there's room in msg_arr[] for at least one more.
1076  */
1077 void check_msg_arr_size(void) {
1078         if ((num_msgs + 1) > msg_arr_size) {
1079                 msg_arr_size += 512;
1080                 msg_arr = realloc(msg_arr,
1081                         ((sizeof(long)) * msg_arr_size) );
1082         }
1083 }
1084
1085
1086 /*
1087  * break_big_lines()  -  break up lines that are >1024 characters
1088  *                       otherwise the server will truncate
1089  */
1090 void break_big_lines(char *msg) {
1091         char *ptr;
1092         char *break_here;
1093
1094         if (msg == NULL) {
1095                 return;
1096         }
1097
1098         ptr = msg;
1099         while (strlen(ptr) > 1000) {
1100                 break_here = strchr(&ptr[900], ' ');
1101                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1102                         break_here = &ptr[999];
1103                 }
1104                 *break_here = '\n';
1105                 ptr = break_here++;
1106         }
1107 }
1108
1109
1110 /*
1111  * entmsg()  -  edit and create a message
1112  *              returns 0 if message was saved
1113  */
1114 int entmsg(CtdlIPC *ipc,
1115                 int is_reply,   /* nonzero if this was a <R>eply command */
1116                 int c,          /* mode */
1117                 int masquerade  /* prompt for a non-default display name? */
1118 ) {
1119         char buf[SIZ];
1120         int a, b;
1121         int need_recp = 0;
1122         int mode;
1123         long highmsg = 0L;
1124         FILE *fp;
1125         char subject[SIZ];
1126         struct ctdlipcmessage message;
1127         unsigned long *msgarr = NULL;
1128         int r;                  /* IPC response code */
1129         int subject_required = 0;
1130
1131         if (!entmsg_ok) {
1132                 scr_printf("You may not enter messages in this type of room.\n");
1133                 return(1);
1134         }
1135
1136         if (c > 0) {
1137                 mode = 1;
1138         }
1139         else {
1140                 mode = 0;
1141         }
1142
1143         strcpy(subject, "");
1144
1145         /*
1146          * First, check to see if we have permission to enter a message in
1147          * this room.  The server will return an error code if we can't.
1148          */
1149         strcpy(message.recipient, "");
1150         strcpy(message.author, "");
1151         strcpy(message.subject, "");
1152         strcpy(message.references, "");
1153         message.text = "";              /* point to "", changes later */
1154         message.anonymous = 0;
1155         message.type = mode;
1156
1157         if (masquerade) {
1158                 newprompt("Display name for this message: ", message.author, 40);
1159         }
1160
1161         if (is_reply) {
1162
1163                 if (!IsEmptyStr(reply_subject)) {
1164                         if (!strncasecmp(reply_subject,
1165                            "Re: ", 3)) {
1166                                 strcpy(message.subject, reply_subject);
1167                         }
1168                         else {
1169                                 snprintf(message.subject,
1170                                         sizeof message.subject,
1171                                         "Re: %s",
1172                                         reply_subject);
1173                         }
1174                 }
1175
1176                 /* Trim down excessively long lists of thread references.  We eliminate the
1177                  * second one in the list so that the thread root remains intact.
1178                  */
1179                 int rrtok = num_tokens(reply_references, '|');
1180                 int rrlen = strlen(reply_references);
1181                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1182                         remove_token(reply_references, 1, '|');
1183                 }
1184
1185                 snprintf(message.references, sizeof message.references, "%s%s%s",
1186                         reply_references,
1187                         (IsEmptyStr(reply_references) ? "" : "|"),
1188                         reply_inreplyto
1189                 );
1190         }
1191
1192         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1193
1194         if (r / 100 != 2 && r / 10 != 57) {
1195                 scr_printf("%s\n", buf);
1196                 return (1);
1197         }
1198
1199         /* Error code 570 is special.  It means that we CAN enter a message
1200          * in this room, but a recipient needs to be specified.
1201          */
1202         need_recp = 0;
1203         if (r / 10 == 57) {
1204                 need_recp = 1;
1205         }
1206
1207         /* If the user is a dumbass, tell them how to type. */
1208         if ((userflags & US_EXPERT) == 0) {
1209                 formout(ipc, "entermsg");
1210         }
1211
1212         /* Handle the selection of a recipient, if necessary. */
1213         strcpy(buf, "");
1214         if (need_recp == 1) {
1215                 if (axlevel >= AxProbU) {
1216                         if (is_reply) {
1217                                 strcpy(buf, reply_to);
1218                         } else {
1219                                 newprompt("Enter recipient: ", buf, SIZ-100);
1220                                 if (IsEmptyStr(buf)) {
1221                                         return (1);
1222                                 }
1223                         }
1224                 } else
1225                         strcpy(buf, "sysop");
1226         }
1227         strcpy(message.recipient, buf);
1228
1229         if (room_flags & QR_ANONOPT) {
1230                 scr_printf("Anonymous (Y/N)? ");
1231                 if (yesno() == 1)
1232                         message.anonymous = 1;
1233         }
1234
1235         /* If it's mail, we've got to check the validity of the recipient... */
1236         if (!IsEmptyStr(message.recipient)) {
1237                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1238                 if (r / 100 != 2) {
1239                         scr_printf("%s\n", buf);
1240                         return (1);
1241                 }
1242         }
1243
1244         /* Learn the number of the newest message in in the room, so we can
1245          * tell upon saving whether someone else has posted too.
1246          */
1247         num_msgs = 0;
1248         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1249         if (r / 100 != 1) {
1250                 scr_printf("%s\n", buf);
1251         } else {
1252                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1253                         ;
1254         }
1255
1256         /* Now compose the message... */
1257         if (client_make_message(ipc, temp, message.recipient,
1258            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1259             if (msgarr) free(msgarr);
1260                 return (2);
1261         }
1262
1263         /* Reopen the temp file that was created, so we can send it */
1264         fp = fopen(temp, "r");
1265
1266         if (!fp || !(message.text = load_message_from_file(fp))) {
1267                 scr_printf("*** Internal error while trying to save message!\n"
1268                         "%s: %s\n",
1269                         temp, strerror(errno));
1270                 unlink(temp);
1271                 return(errno);
1272         }
1273
1274         if (fp) fclose(fp);
1275
1276         /* Break lines that are >1024 characters, otherwise the server
1277          * will truncate them.
1278          */
1279         break_big_lines(message.text);
1280
1281         /* Transmit message to the server */
1282         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1283         if (r / 100 != 4) {
1284                 scr_printf("%s\n", buf);
1285                 return (1);
1286         }
1287
1288         /* Yes, unlink it now, so it doesn't stick around if we crash */
1289         unlink(temp);
1290
1291         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1292
1293         if (msgarr) free(msgarr);
1294         msgarr = NULL;
1295         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1296         if (r / 100 != 1) {
1297                 scr_printf("%s\n", buf);
1298         } else {
1299                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1300                         ;
1301         }
1302
1303         /* get new highest message number in room to set lrp for goto... */
1304         maxmsgnum = msgarr[num_msgs - 1];
1305
1306         /* now see if anyone else has posted in here */
1307         b = (-1);
1308         for (a = 0; a < num_msgs; ++a) {
1309                 if (msgarr[a] > highmsg) {
1310                         ++b;
1311                 }
1312         }
1313         if (msgarr) free(msgarr);
1314         msgarr = NULL;
1315
1316         /* In the Mail> room, this algorithm always counts one message
1317          * higher than in public rooms, so we decrement it by one.
1318          */
1319         if (need_recp) {
1320                 --b;
1321         }
1322
1323         if (b == 1) {
1324                 scr_printf("*** 1 additional message has been entered "
1325                         "in this room by another user.\n");
1326         }
1327         else if (b > 1) {
1328                 scr_printf("*** %d additional messages have been entered "
1329                         "in this room by other users.\n", b);
1330         }
1331     free(message.text);
1332
1333         return(0);
1334 }
1335
1336 /*
1337  * Do editing on a quoted file
1338  */
1339 void process_quote(void)
1340 {
1341         FILE *qfile, *tfile;
1342         char buf[128];
1343         int line, qstart, qend;
1344
1345         /* Unlink the second temp file as soon as it's opened, so it'll get
1346          * deleted even if the program dies
1347          */
1348         qfile = fopen(temp2, "r");
1349         unlink(temp2);
1350
1351         /* Display the quotable text with line numbers added */
1352         line = 0;
1353         if (fgets(buf, 128, qfile) == NULL) {
1354                 /* we're skipping a line here */
1355         }
1356         while (fgets(buf, 128, qfile) != NULL) {
1357                 scr_printf("%3d %s", ++line, buf);
1358         }
1359
1360         qstart = intprompt("Begin quoting at", 1, 1, line);
1361         qend = intprompt("  End quoting at", line, qstart, line);
1362
1363         rewind(qfile);
1364         line = 0;
1365         if (fgets(buf, 128, qfile) == NULL) {
1366                 /* we're skipping a line here */
1367         }
1368         tfile = fopen(temp, "w");
1369         while (fgets(buf, 128, qfile) != NULL) {
1370                 if ((++line >= qstart) && (line <= qend))
1371                         fprintf(tfile, " >%s", buf);
1372         }
1373         fprintf(tfile, " \n");
1374         fclose(qfile);
1375         fclose(tfile);
1376         chmod(temp, 0666);
1377 }
1378
1379
1380
1381 /*
1382  * List the URL's which were embedded in the previous message
1383  */
1384 void list_urls(CtdlIPC *ipc)
1385 {
1386         int i;
1387         char cmd[SIZ];
1388         int rv;
1389
1390         if (num_urls == 0) {
1391                 scr_printf("There were no URL's in the previous message.\n\n");
1392                 return;
1393         }
1394
1395         for (i = 0; i < num_urls; ++i) {
1396                 scr_printf("%3d %s\n", i + 1, urls[i]);
1397         }
1398
1399         if ((i = num_urls) != 1)
1400                 i = intprompt("Display which one", 1, 1, num_urls);
1401
1402         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1403         rv = system(cmd);
1404         if (rv != 0)
1405                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1406         scr_printf("\n");
1407 }
1408
1409
1410 /*
1411  * Run image viewer in background
1412  */
1413 int do_image_view(const char *filename)
1414 {
1415         char cmd[SIZ];
1416         pid_t childpid;
1417
1418         snprintf(cmd, sizeof cmd, imagecmd, filename);
1419         childpid = fork();
1420         if (childpid < 0) {
1421                 unlink(filename);
1422                 return childpid;
1423         }
1424
1425         if (childpid == 0) {
1426                 int retcode;
1427                 pid_t grandchildpid;
1428
1429                 grandchildpid = fork();
1430                 if (grandchildpid < 0) {
1431                         return grandchildpid;
1432                 }
1433
1434                 if (grandchildpid == 0) {
1435                         int nullfd;
1436                         int outfd = -1;
1437                         int errfd = -1;
1438
1439                         nullfd = open("/dev/null", O_WRONLY);
1440                         if (nullfd > -1) {
1441                                 dup2(1, outfd);
1442                                 dup2(2, errfd);
1443                                 dup2(nullfd, 1);
1444                                 dup2(nullfd, 2);
1445                         }
1446                         retcode = system(cmd);
1447                         if (nullfd > -1) {
1448                                 dup2(outfd, 1);
1449                                 dup2(errfd, 2);
1450                                 close(nullfd);
1451                         }
1452                         unlink(filename);
1453                         exit(retcode);
1454                 }
1455
1456                 if (grandchildpid > 0) {
1457                         exit(0);
1458                 }
1459         }
1460
1461         if (childpid > 0) {
1462                 int retcode;
1463
1464                 waitpid(childpid, &retcode, 0);
1465                 return retcode;
1466         }
1467
1468         return -1;
1469 }
1470
1471
1472 /*
1473  * View an image attached to a message
1474  */
1475 void image_view(CtdlIPC *ipc, unsigned long msg)
1476 {
1477         struct parts *ptr = last_message_parts;
1478         char part[SIZ];
1479         int found = 0;
1480
1481         /* Run through available parts */
1482         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1483                 if ((!strcasecmp(ptr->disposition, "attachment")
1484                    || !strcasecmp(ptr->disposition, "inline"))
1485                    && !strncmp(ptr->mimetype, "image/", 6)) {
1486                         found++;
1487                         if (found == 1) {
1488                                 strcpy(part, ptr->number);
1489                         }
1490                 }
1491         }
1492
1493         while (found > 0) {
1494                 if (found > 1)
1495                         strprompt("View which part (0 when done)", part, SIZ-1);
1496                 found = -found;
1497                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1498                         if ((!strcasecmp(ptr->disposition, "attachment")
1499                            || !strcasecmp(ptr->disposition, "inline"))
1500                            && !strncmp(ptr->mimetype, "image/", 6)
1501                            && !strcasecmp(ptr->number, part)) {
1502                                 char tmp[PATH_MAX];
1503                                 char buf[SIZ];
1504                                 void *file = NULL; /* The downloaded file */
1505                                 int r;
1506
1507                                 /* view image */
1508                                 found = -found;
1509                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1510                                 if (r / 100 != 2) {
1511                                         scr_printf("%s\n", buf);
1512                                 } else {
1513                                         size_t len;
1514
1515                                         len = (size_t)extract_long(buf, 0);
1516                                         progress(ipc, len, len);
1517                                         scr_flush();
1518                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1519                                         strcat(tmp, ptr->filename);
1520                                         save_buffer(file, len, tmp);
1521                                         free(file);
1522                                         do_image_view(tmp);
1523                                 }
1524                                 break;
1525                         }
1526                 }
1527                 if (found == 1)
1528                         break;
1529         }
1530 }
1531
1532
1533 /*
1534  * Read the messages in the current room
1535  */
1536 void readmsgs(CtdlIPC *ipc,
1537         enum MessageList c,             /* see listing in citadel_ipc.h */
1538         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1539         int q           /* Number of msgs to read (if c==3) */
1540 ) {
1541         int a, e, f, g, start;
1542         int savedpos;
1543         int hold_sw = 0;
1544         char arcflag = 0;
1545         char quotflag = 0;
1546         int hold_color = 0;
1547         char prtfile[PATH_MAX];
1548         char pagin;
1549         char cmd[SIZ];
1550         char targ[ROOMNAMELEN];
1551         char filename[PATH_MAX];
1552         char save_to[PATH_MAX];
1553         void *attachment = NULL;        /* Downloaded attachment */
1554         FILE *dest = NULL;              /* Alternate destination other than screen */
1555         int r;                          /* IPC response code */
1556         static int att_seq = 0;         /* Attachment download sequence number */
1557         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1558
1559         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1560
1561         if (msg_arr) {
1562                 free(msg_arr);
1563                 msg_arr = NULL;
1564         }
1565         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1566         if (r / 100 != 1) {
1567                 scr_printf("%s\n", cmd);
1568         } else {
1569                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1570                         ;
1571         }
1572
1573         if (num_msgs == 0) {    /* TODO look at this later */
1574                 if (c == LastMessages) return;
1575                 scr_printf("*** There are no ");
1576                 if (c == NewMessages) scr_printf("new ");
1577                 if (c == OldMessages) scr_printf("old ");
1578                 scr_printf("messages in this room.\n");
1579                 return;
1580         }
1581
1582         /* this loop cycles through each message... */
1583         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1584         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1585                 while (msg_arr[a] == 0L) {
1586                         a = a + rdir;
1587                         if ((a == num_msgs) || (a == (-1)))
1588                                 return;
1589                 }
1590
1591 RAGAIN:         pagin = ((arcflag == 0)
1592                          && (quotflag == 0)
1593                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1594
1595                 /* If we're doing a quote, set the screenwidth to 72 */
1596                 if (quotflag) {
1597                         hold_sw = screenwidth;
1598                         screenwidth = 72;
1599                 }
1600
1601                 /* If printing or archiving, set the screenwidth to 80 */
1602                 if (arcflag) {
1603                         hold_sw = screenwidth;
1604                         screenwidth = 80;
1605                 }
1606
1607                 /* clear parts list */
1608                 free_parts(last_message_parts);
1609                 last_message_parts = NULL;
1610
1611                 /* now read the message... */
1612                 e = read_message(ipc, msg_arr[a], pagin, dest);
1613
1614                 /* ...and set the screenwidth back if we have to */
1615                 if ((quotflag) || (arcflag)) {
1616                         screenwidth = hold_sw;
1617                 }
1618 RMSGREAD:
1619                 highest_msg_read = msg_arr[a];
1620                 if (quotflag) {
1621                         fclose(dest);
1622                         dest = NULL;
1623                         quotflag = 0;
1624                         enable_color = hold_color;
1625                         process_quote();
1626                         e = 'r';
1627                         goto DONE_QUOTING;
1628                 }
1629                 if (arcflag) {
1630                         fclose(dest);
1631                         dest = NULL;
1632                         arcflag = 0;
1633                         enable_color = hold_color;
1634                         f = fork();
1635                         if (f == 0) {
1636                                 if (freopen(prtfile, "r", stdin) == NULL) {
1637                                         /* we probably should handle the error condition here */
1638                                 }
1639                                 stty_ctdl(SB_RESTORE);
1640                                 ka_system(printcmd);
1641                                 stty_ctdl(SB_NO_INTR);
1642                                 unlink(prtfile);
1643                                 exit(0);
1644                         }
1645                         if (f > 0)
1646                                 do {
1647                                         g = wait(NULL);
1648                                 } while ((g != f) && (g >= 0));
1649                         scr_printf("Message printed.\n");
1650                 }
1651                 if (e == SIGQUIT)
1652                         return;
1653                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1654                         && (((room_flags & QR_MAILBOX) == 0)
1655                         || (rc_force_mail_prompts == 0))) {
1656                         e = 'n';
1657                 } else {
1658                         color(DIM_WHITE);
1659                         scr_printf("(");
1660                         color(BRIGHT_WHITE);
1661                         scr_printf("%d", num_msgs - a - 1);
1662                         color(DIM_WHITE);
1663                         scr_printf(") ");
1664
1665                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1666                         if (rc_url_cmd[0] && num_urls)
1667                                 keyopt("<U>RLview ");
1668                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1669                                 keyopt("<I>mages ");
1670                         keyopt("<?>help -> ");
1671
1672                         do {
1673                                 e = (inkey() & 127);
1674                                 e = tolower(e);
1675 /* return key same as <N> */ if (e == 10)
1676                                         e = 'n';
1677 /* space key same as <N> */ if (e == 32)
1678                                         e = 'n';
1679 /* del/move for aides only */
1680                                     if (  (!is_room_aide)
1681                                        && ((room_flags & QR_MAILBOX) == 0)
1682                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1683                                        ) {
1684                                         if ((e == 'd') || (e == 'm'))
1685                                                 e = 0;
1686                                 }
1687 /* print only if available */
1688                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1689                                         e = 0;
1690 /* can't file if not allowed */
1691                                     if ((e == 'f')
1692                                         && (rc_allow_attachments == 0))
1693                                         e = 0;
1694 /* link only if browser avail*/
1695                                     if ((e == 'u')
1696                                         && (IsEmptyStr(rc_url_cmd)))
1697                                         e = 0;
1698                                 if ((e == 'i')
1699                                         && (IsEmptyStr(imagecmd) || !has_images))
1700                                         e = 0;
1701                         } while ((e != 'a') && (e != 'n') && (e != 's')
1702                                  && (e != 'd') && (e != 'm') && (e != 'p')
1703                                  && (e != 'q') && (e != 'b') && (e != 'h')
1704                                  && (e != 'r') && (e != 'f') && (e != '?')
1705                                  && (e != 'u') && (e != 'c') && (e != 'y')
1706                                  && (e != 'i') && (e != 'o') );
1707                         switch (e) {
1708                         case 's':
1709                                 scr_printf("Stop");
1710                                 break;
1711                         case 'a':
1712                                 scr_printf("Again");
1713                                 break;
1714                         case 'd':
1715                                 scr_printf("Delete");
1716                                 break;
1717                         case 'm':
1718                                 scr_printf("Move");
1719                                 break;
1720                         case 'c':
1721                                 scr_printf("Copy");
1722                                 break;
1723                         case 'n':
1724                                 scr_printf("Next");
1725                                 break;
1726                         case 'p':
1727                                 scr_printf("Print");
1728                                 break;
1729                         case 'q':
1730                                 scr_printf("reply Quoted");
1731                                 break;
1732                         case 'b':
1733                                 scr_printf("Back");
1734                                 break;
1735                         case 'h':
1736                                 scr_printf("Header");
1737                                 break;
1738                         case 'r':
1739                                 scr_printf("Reply");
1740                                 break;
1741                         case 'o':
1742                                 scr_printf("Open attachments");
1743                                 break;
1744                         case 'f':
1745                                 scr_printf("File");
1746                                 break;
1747                         case 'u':
1748                                 scr_printf("URL's");
1749                                 break;
1750                         case 'y':
1751                                 scr_printf("mY next");
1752                                 break;
1753                         case 'i':
1754                                 break;
1755                         case '?':
1756                                 scr_printf("? <help>");
1757                                 break;
1758                         }
1759                         if (userflags & US_DISAPPEAR || e == 'i')
1760                                 scr_printf("\r%79s\r", "");
1761                         else
1762                                 scr_printf("\n");
1763                 }
1764 DONE_QUOTING:   switch (e) {
1765                 case '?':
1766                         scr_printf("Options available here:\n"
1767                                 " ?  Help (prints this message)\n"
1768                                 " S  Stop reading immediately\n"
1769                                 " A  Again (repeats last message)\n"
1770                                 " N  Next (continue with next message)\n"
1771                                 " Y  My Next (continue with next message you authored)\n"
1772                                 " B  Back (go back to previous message)\n");
1773                         if (  (is_room_aide)
1774                            || (room_flags & QR_MAILBOX)
1775                            || (room_flags2 & QR2_COLLABDEL)
1776                         ) {
1777                                 scr_printf(" D  Delete this message\n"
1778                                         " M  Move message to another room\n");
1779                         }
1780                         scr_printf(" C  Copy message to another room\n");
1781                         if (!IsEmptyStr(printcmd))
1782                                 scr_printf(" P  Print this message\n");
1783                         scr_printf(
1784                                 " Q  Reply to this message, quoting portions of it\n"
1785                                 " H  Headers (display message headers only)\n");
1786                         if (is_mail)
1787                                 scr_printf(" R  Reply to this message\n");
1788                         if (rc_allow_attachments) {
1789                                 scr_printf(" O  (Open attachments)\n");
1790                                 scr_printf(" F  (save attachments to a File)\n");
1791                         }
1792                         if (!IsEmptyStr(rc_url_cmd))
1793                                 scr_printf(" U  (list URL's for display)\n");
1794                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1795                                 scr_printf(" I  Image viewer\n");
1796                         scr_printf("\n");
1797                         goto RMSGREAD;
1798                 case 'p':
1799                         scr_flush();
1800                         dest = fopen(prtfile, "w");
1801                         arcflag = 1;
1802                         hold_color = enable_color;
1803                         enable_color = 0;
1804                         goto RAGAIN;
1805                 case 'q':
1806                         scr_flush();
1807                         dest = fopen(temp2, "w");
1808                         quotflag = 1;
1809                         hold_color = enable_color;
1810                         enable_color = 0;
1811                         goto RAGAIN;
1812                 case 's':
1813                         return;
1814                 case 'a':
1815                         goto RAGAIN;
1816                 case 'b':
1817                         a = a - (rdir * 2);
1818                         break;
1819                 case 'm':
1820                 case 'c':
1821                         newprompt("Enter target room: ",
1822                                   targ, ROOMNAMELEN - 1);
1823                         if (!IsEmptyStr(targ)) {
1824                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1825                                                        msg_arr[a], targ, cmd);
1826                                 scr_printf("%s\n", cmd);
1827                                 if (r / 100 == 2)
1828                                         msg_arr[a] = 0L;
1829                         } else {
1830                                 goto RMSGREAD;
1831                         }
1832                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1833                                 goto RMSGREAD;  /* the logic here sucks */
1834                         break;
1835                 case 'o':
1836                 case 'f':
1837                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1838                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1839                                         filename, &attachment, progress, cmd);
1840                         if (r / 100 != 2) {
1841                                 scr_printf("%s\n", cmd);
1842                         } else {
1843                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1844                                 /*
1845                                  * Part 1 won't have a filename; use the
1846                                  * subject of the message instead. IO
1847                                  */
1848                                 if (IsEmptyStr(filename)) {
1849                                         strcpy(filename, reply_subject);
1850                                 }
1851                                 if (e == 'o') {         /* open attachment */
1852                                         mkdir(tempdir, 0700);
1853                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1854                                                 tempdir,
1855                                                 ++att_seq,
1856                                                 filename);
1857                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1858                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1859                                         rv = system(cmd);
1860                                         if (rv != 0)
1861                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1862                                 }
1863                                 else {                  /* save attachment to disk */
1864                                         destination_directory(save_to, filename);
1865                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1866                                 }
1867                         }
1868                         if (attachment) {
1869                                 free(attachment);
1870                                 attachment = NULL;
1871                         }
1872                         goto RMSGREAD;
1873                 case 'd':
1874                         scr_printf("*** Delete this message? ");
1875                         if (yesno() == 1) {
1876                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1877                                 scr_printf("%s\n", cmd);
1878                                 if (r / 100 == 2)
1879                                         msg_arr[a] = 0L;
1880                         } else {
1881                                 goto RMSGREAD;
1882                         }
1883                         break;
1884                 case 'h':
1885                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1886                         goto RMSGREAD;
1887                 case 'r':
1888                         savedpos = num_msgs;
1889                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1890                         num_msgs = savedpos;
1891                         goto RMSGREAD;
1892                 case 'u':
1893                         list_urls(ipc);
1894                         goto RMSGREAD;
1895                 case 'i':
1896                         image_view(ipc, msg_arr[a]);
1897                         goto RMSGREAD;
1898             case 'y':
1899           { /* hack hack hack */
1900             /* find the next message by me, stay here if we find nothing */
1901             int finda;
1902             int lasta = a;
1903             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1904               {
1905                 /* This is repetitively dumb, but that's what computers are for.
1906                    We have to load up messages until we find one by us */
1907                 char buf[SIZ];
1908                 int founda = 0;
1909                 struct ctdlipcmessage *msg = NULL;
1910
1911                 /* read the header so we can get 'from=' */
1912                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1913                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1914                         a = lasta; /* meesa current */
1915                         founda = 1;
1916                 }
1917
1918                 free(msg);
1919
1920                 if (founda)
1921                         break; /* for */
1922                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1923               } /* for */
1924           } /* case 'y' */
1925       } /* switch */
1926         }                       /* end for loop */
1927 }                               /* end read routine */
1928
1929
1930
1931
1932 /*
1933  * View and edit a system message
1934  */
1935 void edit_system_message(CtdlIPC *ipc, char *which_message)
1936 {
1937         char desc[SIZ];
1938         char read_cmd[SIZ];
1939         char write_cmd[SIZ];
1940
1941         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1942         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1943         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1944         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1945 }
1946
1947
1948
1949
1950 /*
1951  * Loads the contents of a file into memory.  Caller must free the allocated
1952  * memory.
1953  */
1954 char *load_message_from_file(FILE *src)
1955 {
1956         size_t i;
1957         size_t got = 0;
1958         char *dest = NULL;
1959
1960         fseek(src, 0, SEEK_END);
1961         i = ftell(src);
1962         rewind(src);
1963
1964         dest = (char *)calloc(1, i + 1);
1965         if (!dest)
1966                 return NULL;
1967
1968         while (got < i) {
1969                 size_t g;
1970
1971                 g = fread(dest + got, 1, i - got, src);
1972                 got += g;
1973                 if (g < i - got) {
1974                         /* Interrupted system call, keep going */
1975                         if (errno == EINTR)
1976                                 continue;
1977                         /* At this point we have either EOF or error */
1978                         i = got;
1979                         break;
1980                 }
1981                 dest[i] = 0;
1982         }
1983
1984         return dest;
1985 }