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[256];
 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                 struct tm thetime;
 542                 localtime_r(&message->time, &thetime);
 543                 strftime(now, sizeof now, "%F %R", &thetime);
 544                 if (dest) {
 545                         fprintf(dest, "%s from %s ", now, message->author);
 546                         if (!IsEmptyStr(message->email)) {
 547                                 fprintf(dest, "<%s> ", message->email);
 548                         }
 549                 } else {
 550                         color(BRIGHT_CYAN);
 551                         scr_printf("%s ", now);
 552                         color(DIM_WHITE);
 553                         scr_printf("from ");
 554                         color(BRIGHT_CYAN);
 555                         scr_printf("%s ", message->author);
 556                         if (!IsEmptyStr(message->email)) {
 557                                 color(DIM_WHITE);
 558                                 scr_printf("<");
 559                                 color(BRIGHT_BLUE);
 560                                 scr_printf("%s", message->email);
 561                                         color(DIM_WHITE);
 562                                 scr_printf("> ");
 563                         }
 564                 }
 565                 if (!IsEmptyStr(message->node)) {
 566                         if ((room_flags & QR_NETWORK)
 567                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 568                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 569                                 if (IsEmptyStr(message->email)) {
 570                                         if (dest) {
 571                                                 fprintf(dest, "@%s ", message->node);
 572                                         } else {
 573                                                 color(DIM_WHITE);
 574                                                 scr_printf("@");
 575                                                 color(BRIGHT_YELLOW);
 576                                                 scr_printf("%s ", message->node);
 577                                         }
 578                                 }
 579                         }
 580                 }
 581                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 582                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 583                         if (dest) {
 584                                 fprintf(dest, "(%s) ", message->hnod);
 585                         } else {
 586                                 color(DIM_WHITE);
 587                                 scr_printf("(");
 588                                 color(BRIGHT_WHITE);
 589                                 scr_printf("%s", message->hnod);
 590                                 color(DIM_WHITE);
 591                                 scr_printf(") ");
 592                         }
 593                 }
 594                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 595                         if (dest) {
 596                                 fprintf(dest, "in %s> ", message->room);
 597                         } else {
 598                                 color(DIM_WHITE);
 599                                 scr_printf("in ");
 600                                 color(BRIGHT_MAGENTA);
 601                                 scr_printf("%s> ", message->room);
 602                         }
 603                 }
 604                 if (!IsEmptyStr(message->recipient)) {
 605                         if (dest) {
 606                                 fprintf(dest, "to %s ", message->recipient);
 607                         } else {
 608                                 color(DIM_WHITE);
 609                                 scr_printf("to ");
 610                                 color(BRIGHT_CYAN);
 611                                 scr_printf("%s ", message->recipient);
 612                         }
 613                 }
 614         }
 615
 616         if (dest) {
 617                 fprintf(dest, "\n");
 618         } else {
 619                 scr_printf("\n");
 620         }
 621
 622         /* Set the reply-to address to an Internet e-mail address if possible
 623          */
 624         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 625                 if (!IsEmptyStr(message->author)) {
 626                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 627                 }
 628                 else {
 629                         safestrncpy(reply_to, message->email, sizeof reply_to);
 630                 }
 631         }
 632
 633         /* But if we can't do that, set it to a Citadel address.
 634          */
 635         if (!strcmp(reply_to, NO_REPLY_TO)) {
 636                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 637                          message->author, message->node);
 638         }
 639
 640         if (message->msgid != NULL) {
 641                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 642         }
 643
 644         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 645                 safestrncpy(reply_references, message->references, sizeof reply_references);
 646         }
 647
 648         if (message->subject != NULL) {
 649                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 650                 if (!IsEmptyStr(message->subject)) {
 651                         if (dest) {
 652                                 fprintf(dest, "Subject: %s\n", message->subject);
 653                         } else {
 654                                 color(DIM_WHITE);
 655                                 scr_printf("Subject: ");
 656                                 color(BRIGHT_CYAN);
 657                                 mini_2047_decode(message->subject);
 658                                 scr_printf("%s\n", message->subject);
 659                         }
 660                 }
 661         }
 662
 663         if (pagin == 1 && !dest) {
 664                 color(BRIGHT_WHITE);
 665         }
 666
 667         /******* end of header output, start of message text output *******/
 668
 669         /*
 670          * Convert HTML to plain text, formatting for the actual width
 671          * of the client screen.
 672          */
 673         if (!strcasecmp(message->content_type, "text/html")) {
 674                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 675                 if (converted_text != NULL) {
 676                         free(message->text);
 677                         message->text = converted_text;
 678                         format_type = 1;
 679                 }
 680         }
 681
 682         /* Text/plain is a different type */
 683         if (!strcasecmp(message->content_type, "text/plain")) {
 684                 format_type = 1;
 685         }
 686
 687         /* Extract URL's */
 688         static char *urlprefixes[] = {
 689                 "http://",
 690                 "https://",
 691                 "ftp://"
 692         };
 693         int p = 0;
 694         num_urls = 0;   /* Start with a clean slate */
 695         for (p=0; p<(sizeof urlprefixes / sizeof(char *)); ++p) {
 696                 searchptr = message->text;
 697                 while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 698                         searchptr = strstr(searchptr, urlprefixes[p]);
 699                         if (searchptr != NULL) {
 700                                 safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 701                                 for (i = 0; i < strlen(urls[num_urls]); i++) {
 702                                         ch = urls[num_urls][i];
 703                                         if (ch == '>' || ch == '\"' || ch == ')' ||
 704                                             ch == ' ' || ch == '\n') {
 705                                                 urls[num_urls][i] = 0;
 706                                                 break;
 707                                         }
 708                                 }
 709                                 num_urls++;
 710                                 ++searchptr;
 711                         }
 712                 }
 713         }
 714
 715         /*
 716          * Here we go
 717          */
 718         if (format_type == 0) {
 719                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 720         } else {
 721                 /* renderer for text/plain */
 722
 723                 lineptr = message->text;
 724
 725                 do {
 726                         nextline = strchr(lineptr, '\n');
 727                         if (nextline != NULL) {
 728                                 *nextline = 0;
 729                                 ++nextline;
 730                                 if (*nextline == 0) nextline = NULL;
 731                         }
 732
 733                         if (sigcaught == 0) {
 734                                 linelen = strlen(lineptr);
 735                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 736                                         lineptr[--linelen] = 0;
 737                                 }
 738                                 if (dest) {
 739                                         fprintf(dest, "%s\n", lineptr);
 740                                 } else {
 741                                         scr_printf("%s\n", lineptr);
 742                                 }
 743                         }
 744                         if (lineptr[0] == 0) final_line_is_blank = 1;
 745                         else final_line_is_blank = 0;
 746                         lineptr = nextline;
 747                 } while (nextline);
 748                 fr = sigcaught;
 749         }
 750         if (!final_line_is_blank) {
 751                 if (dest) {
 752                         fprintf(dest, "\n");
 753                 }
 754                 else {
 755                         scr_printf("\n");
 756                         fr = sigcaught;
 757                 }
 758         }
 759
 760         /* Enumerate any attachments */
 761         if ( (pagin == 1) && (message->attachments) ) {
 762                 struct parts *ptr;
 763
 764                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 765                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 766                            || (!strcasecmp(ptr->disposition, "inline"))
 767                            || (!strcasecmp(ptr->disposition, ""))
 768                         ) {
 769                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 770                                    && (!IsEmptyStr(ptr->mimetype))
 771                                 ) {
 772                                         color(DIM_WHITE);
 773                                         scr_printf("Part ");
 774                                         color(BRIGHT_MAGENTA);
 775                                         scr_printf("%s", ptr->number);
 776                                         color(DIM_WHITE);
 777                                         scr_printf(": ");
 778                                         color(BRIGHT_CYAN);
 779                                         scr_printf("%s", ptr->filename);
 780                                         color(DIM_WHITE);
 781                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 782                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 783                                                 has_images++;
 784                                         }
 785                                 }
 786                         }
 787                 }
 788         }
 789
 790         /* Save the attachments info for later */
 791         last_message_parts = message->attachments;
 792
 793         /* Now we're done */
 794         free(message->text);
 795         free(message);
 796
 797         if (pagin == 1 && !dest)
 798                 color(DIM_WHITE);
 799         stty_ctdl(0);
 800         return (fr);
 801 }
 802
 803 /*
 804  * replace string function for the built-in editor
 805  */
 806 void replace_string(char *filename, long int startpos)
 807 {
 808         char buf[512];
 809         char srch_str[128];
 810         char rplc_str[128];
 811         FILE *fp;
 812         int a;
 813         long rpos, wpos;
 814         char *ptr;
 815         int substitutions = 0;
 816         long msglen = 0L;
 817         int rv;
 818
 819         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str)-1) );
 820         if (IsEmptyStr(srch_str)) {
 821                 return;
 822         }
 823
 824         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str)-1) );
 825
 826         fp = fopen(filename, "r+");
 827         if (fp == NULL) {
 828                 return;
 829         }
 830
 831         wpos = startpos;
 832         fseek(fp, startpos, 0);
 833         strcpy(buf, "");
 834         while (a = getc(fp), a > 0) {
 835                 ++msglen;
 836                 buf[strlen(buf) + 1] = 0;
 837                 buf[strlen(buf)] = a;
 838                 if (strlen(buf) >= strlen(srch_str)) {
 839                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 840                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 841                                 strcpy(ptr, rplc_str);
 842                                 ++substitutions;
 843                         }
 844                 }
 845                 if (strlen(buf) > 384) {
 846                         rpos = ftell(fp);
 847                         fseek(fp, wpos, 0);
 848                         rv = fwrite((char *) buf, 128, 1, fp);
 849                         if (rv < 0) {
 850                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 851                                 break; /*whoopsi! */
 852                         }
 853                         strcpy(buf, &buf[128]);
 854                         wpos = ftell(fp);
 855                         fseek(fp, rpos, 0);
 856                 }
 857         }
 858         fseek(fp, wpos, 0);
 859         if (!IsEmptyStr(buf)) {
 860                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 861         }
 862         wpos = ftell(fp);
 863         fclose(fp);
 864         rv = truncate(filename, wpos);
 865         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 866 }
 867
 868 /*
 869  * Function to begin composing a new message
 870  */
 871 int client_make_message(CtdlIPC *ipc,
 872                         char *filename,         /* temporary file name */
 873                         char *recipient,        /* NULL if it's not mail */
 874                         int is_anonymous,
 875                         int format_type,
 876                         int mode,
 877                         char *subject,          /* buffer to store subject line */
 878                         int subject_required
 879 ) {
 880         FILE *fp;
 881         int a, b, e_ex_code;
 882         long beg;
 883         char datestr[256];
 884         char header[SIZ];
 885         int cksum = 0;
 886
 887         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 888                 scr_printf("*** No editor available; using built-in editor.\n");
 889                 mode = 0;
 890         }
 891
 892         struct tm thetime;
 893         time_t now = time(NULL);
 894         localtime_r(&now, &thetime);
 895         strftime(datestr, sizeof datestr, "%F %R", &thetime);
 896         header[0] = 0;
 897
 898         if (room_flags & QR_ANONONLY && !recipient) {
 899                 snprintf(header, sizeof header, " ****");
 900         }
 901         else {
 902                 snprintf(header, sizeof header,
 903                         " %s from %s",
 904                         datestr,
 905                         (is_anonymous ? "[anonymous]" : fullname)
 906                         );
 907                 if (!IsEmptyStr(recipient)) {
 908                         size_t tmp = strlen(header);
 909                         snprintf(&header[tmp], sizeof header - tmp,
 910                                 " to %s", recipient);
 911                 }
 912         }
 913         scr_printf("%s\n", header);
 914         if (subject != NULL) if (!IsEmptyStr(subject)) {
 915                 scr_printf("Subject: %s\n", subject);
 916         }
 917
 918         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 919                 newprompt("Subject: ", subject, 70);
 920         }
 921
 922         if (mode == 1) {
 923                 scr_printf("(Press ctrl-d when finished)\n");
 924         }
 925
 926         if (mode == 0) {
 927                 fp = fopen(filename, "r");
 928                 if (fp != NULL) {
 929                         fmout(screenwidth, fp, NULL, NULL, 0);
 930                         beg = ftell(fp);
 931                         if (beg < 0)
 932                                 scr_printf("failed to get stream position %s\n",
 933                                            strerror(errno));
 934                         fclose(fp);
 935                 } else {
 936                         fp = fopen(filename, "w");
 937                         if (fp == NULL) {
 938                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 939                                         filename, strerror(errno)
 940                                 );
 941                         return(1);
 942                         }
 943                         fclose(fp);
 944                 }
 945         }
 946
 947 ME1:    switch (mode) {
 948
 949         case 0:
 950                 fp = fopen(filename, "r+");
 951                 if (fp == NULL) {
 952                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 953                                 filename, strerror(errno)
 954                         );
 955                         return(1);
 956                 }
 957                 citedit(fp);
 958                 fclose(fp);
 959                 goto MECR;
 960
 961         case 1:
 962                 fp = fopen(filename, "a");
 963                 if (fp == NULL) {
 964                         scr_printf("*** Error opening temp file!\n"
 965                                 "    %s: %s\n",
 966                                 filename, strerror(errno));
 967                         return(1);
 968                 }
 969                 do {
 970                         a = inkey();
 971                         if (a == 255)
 972                                 a = 32;
 973                         if (a == 13)
 974                                 a = 10;
 975                         if (a != 4) {
 976                                 putc(a, fp);
 977                                 scr_putc(a);
 978                         }
 979                         if (a == 10)
 980                                 scr_putc(10);
 981                 } while (a != 4);
 982                 fclose(fp);
 983                 break;
 984
 985         case 2:
 986         default:        /* allow 2+ modes */
 987                 e_ex_code = 1;  /* start with a failed exit code */
 988                 stty_ctdl(SB_RESTORE);
 989                 editor_pid = fork();
 990                 cksum = file_checksum(filename);
 991                 if (editor_pid == 0) {
 992                         char tmp[SIZ];
 993
 994                         chmod(filename, 0600);
 995                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 996                         putenv(tmp);
 997                         execlp(editor_path, editor_path, filename, NULL);
 998                         exit(1);
 999                 }
1000                 if (editor_pid > 0)
1001                         do {
1002                                 e_ex_code = 0;
1003                                 b = ka_wait(&e_ex_code);
1004                         } while ((b != editor_pid) && (b >= 0));
1005                 editor_pid = (-1);
1006                 stty_ctdl(0);
1007                 break;
1008         }
1009
1010 MECR:   if (mode >= 2) {
1011                 if (file_checksum(filename) == cksum) {
1012                         scr_printf("*** Aborted message.\n");
1013                         e_ex_code = 1;
1014                 }
1015                 if (e_ex_code == 0) {
1016                         goto MEFIN;
1017                 }
1018                 goto MEABT2;
1019         }
1020
1021         b = keymenu("Entry command (? for options)",
1022                 "<A>bort|"
1023                 "<C>ontinue|"
1024                 "<S>ave message|"
1025                 "<P>rint formatted|"
1026                 "add s<U>bject|"
1027                 "<R>eplace string|"
1028                 "<H>old message"
1029         );
1030
1031         if (b == 'a') goto MEABT;
1032         if (b == 'c') goto ME1;
1033         if (b == 's') goto MEFIN;
1034         if (b == 'p') {
1035                 scr_printf(" %s from %s", datestr, fullname);
1036                 if (!IsEmptyStr(recipient)) {
1037                         scr_printf(" to %s", recipient);
1038                 }
1039                 scr_printf("\n");
1040                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1041                         scr_printf("Subject: %s\n", subject);
1042                 }
1043                 fp = fopen(filename, "r");
1044                 if (fp != NULL) {
1045                         fmout(screenwidth, fp, NULL, NULL, 0);
1046                         beg = ftell(fp);
1047                         if (beg < 0)
1048                                 scr_printf("failed to get stream position %s\n",
1049                                            strerror(errno));
1050                         fclose(fp);
1051                 }
1052                 goto MECR;
1053         }
1054         if (b == 'r') {
1055                 replace_string(filename, 0L);
1056                 goto MECR;
1057         }
1058         if (b == 'h') {
1059                 return (2);
1060         }
1061         if (b == 'u') {
1062                 if (subject != NULL) {
1063                         newprompt("Subject: ", subject, 70);
1064                 }
1065                 goto MECR;
1066         }
1067
1068 MEFIN:  return (0);
1069
1070 MEABT:  scr_printf("Are you sure? ");
1071         if (yesno() == 0) {
1072                 goto ME1;
1073         }
1074 MEABT2: unlink(filename);
1075         return (2);
1076 }
1077
1078
1079 /*
1080  * Make sure there's room in msg_arr[] for at least one more.
1081  */
1082 void check_msg_arr_size(void) {
1083         if ((num_msgs + 1) > msg_arr_size) {
1084                 msg_arr_size += 512;
1085                 msg_arr = realloc(msg_arr,
1086                         ((sizeof(long)) * msg_arr_size) );
1087         }
1088 }
1089
1090
1091 /*
1092  * break_big_lines()  -  break up lines that are >1024 characters
1093  *                       otherwise the server will truncate
1094  */
1095 void break_big_lines(char *msg) {
1096         char *ptr;
1097         char *break_here;
1098
1099         if (msg == NULL) {
1100                 return;
1101         }
1102
1103         ptr = msg;
1104         while (strlen(ptr) > 1000) {
1105                 break_here = strchr(&ptr[900], ' ');
1106                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1107                         break_here = &ptr[999];
1108                 }
1109                 *break_here = '\n';
1110                 ptr = break_here++;
1111         }
1112 }
1113
1114
1115 /*
1116  * entmsg()  -  edit and create a message
1117  *              returns 0 if message was saved
1118  */
1119 int entmsg(CtdlIPC *ipc,
1120                 int is_reply,   /* nonzero if this was a <R>eply command */
1121                 int c,          /* mode */
1122                 int masquerade  /* prompt for a non-default display name? */
1123 ) {
1124         char buf[SIZ];
1125         int a, b;
1126         int need_recp = 0;
1127         int mode;
1128         long highmsg = 0L;
1129         FILE *fp;
1130         char subject[SIZ];
1131         struct ctdlipcmessage message;
1132         unsigned long *msgarr = NULL;
1133         int r;                  /* IPC response code */
1134         int subject_required = 0;
1135
1136         if (!entmsg_ok) {
1137                 scr_printf("You may not enter messages in this type of room.\n");
1138                 return(1);
1139         }
1140
1141         if (c > 0) {
1142                 mode = 1;
1143         }
1144         else {
1145                 mode = 0;
1146         }
1147
1148         strcpy(subject, "");
1149
1150         /*
1151          * First, check to see if we have permission to enter a message in
1152          * this room.  The server will return an error code if we can't.
1153          */
1154         strcpy(message.recipient, "");
1155         strcpy(message.author, "");
1156         strcpy(message.subject, "");
1157         strcpy(message.references, "");
1158         message.text = "";              /* point to "", changes later */
1159         message.anonymous = 0;
1160         message.type = mode;
1161
1162         if (masquerade) {
1163                 newprompt("Display name for this message: ", message.author, 40);
1164         }
1165
1166         if (is_reply) {
1167
1168                 if (!IsEmptyStr(reply_subject)) {
1169                         if (!strncasecmp(reply_subject,
1170                            "Re: ", 3)) {
1171                                 strcpy(message.subject, reply_subject);
1172                         }
1173                         else {
1174                                 snprintf(message.subject,
1175                                         sizeof message.subject,
1176                                         "Re: %s",
1177                                         reply_subject);
1178                         }
1179                 }
1180
1181                 /* Trim down excessively long lists of thread references.  We eliminate the
1182                  * second one in the list so that the thread root remains intact.
1183                  */
1184                 int rrtok = num_tokens(reply_references, '|');
1185                 int rrlen = strlen(reply_references);
1186                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1187                         remove_token(reply_references, 1, '|');
1188                 }
1189
1190                 snprintf(message.references, sizeof message.references, "%s%s%s",
1191                         reply_references,
1192                         (IsEmptyStr(reply_references) ? "" : "|"),
1193                         reply_inreplyto
1194                 );
1195         }
1196
1197         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1198
1199         if (r / 100 != 2 && r / 10 != 57) {
1200                 scr_printf("%s\n", buf);
1201                 return (1);
1202         }
1203
1204         /* Error code 570 is special.  It means that we CAN enter a message
1205          * in this room, but a recipient needs to be specified.
1206          */
1207         need_recp = 0;
1208         if (r / 10 == 57) {
1209                 need_recp = 1;
1210         }
1211
1212         /* If the user is a dumbass, tell them how to type. */
1213         if ((userflags & US_EXPERT) == 0) {
1214                 formout(ipc, "entermsg");
1215         }
1216
1217         /* Handle the selection of a recipient, if necessary. */
1218         strcpy(buf, "");
1219         if (need_recp == 1) {
1220                 if (axlevel >= AxProbU) {
1221                         if (is_reply) {
1222                                 strcpy(buf, reply_to);
1223                         } else {
1224                                 newprompt("Enter recipient: ", buf, SIZ-100);
1225                                 if (IsEmptyStr(buf)) {
1226                                         return (1);
1227                                 }
1228                         }
1229                 } else
1230                         strcpy(buf, "sysop");
1231         }
1232         strcpy(message.recipient, buf);
1233
1234         if (room_flags & QR_ANONOPT) {
1235                 scr_printf("Anonymous (Y/N)? ");
1236                 if (yesno() == 1)
1237                         message.anonymous = 1;
1238         }
1239
1240         /* If it's mail, we've got to check the validity of the recipient... */
1241         if (!IsEmptyStr(message.recipient)) {
1242                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1243                 if (r / 100 != 2) {
1244                         scr_printf("%s\n", buf);
1245                         return (1);
1246                 }
1247         }
1248
1249         /* Learn the number of the newest message in in the room, so we can
1250          * tell upon saving whether someone else has posted too.
1251          */
1252         num_msgs = 0;
1253         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1254         if (r / 100 != 1) {
1255                 scr_printf("%s\n", buf);
1256         } else {
1257                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1258                         ;
1259         }
1260
1261         /* Now compose the message... */
1262         if (client_make_message(ipc, temp, message.recipient,
1263            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1264             if (msgarr) free(msgarr);
1265                 return (2);
1266         }
1267
1268         /* Reopen the temp file that was created, so we can send it */
1269         fp = fopen(temp, "r");
1270
1271         if (!fp || !(message.text = load_message_from_file(fp))) {
1272                 scr_printf("*** Internal error while trying to save message!\n"
1273                         "%s: %s\n",
1274                         temp, strerror(errno));
1275                 unlink(temp);
1276                 return(errno);
1277         }
1278
1279         if (fp) fclose(fp);
1280
1281         /* Break lines that are >1024 characters, otherwise the server
1282          * will truncate them.
1283          */
1284         break_big_lines(message.text);
1285
1286         /* Transmit message to the server */
1287         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1288         if (r / 100 != 4) {
1289                 scr_printf("%s\n", buf);
1290                 return (1);
1291         }
1292
1293         /* Yes, unlink it now, so it doesn't stick around if we crash */
1294         unlink(temp);
1295
1296         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1297
1298         if (msgarr) free(msgarr);
1299         msgarr = NULL;
1300         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1301         if (r / 100 != 1) {
1302                 scr_printf("%s\n", buf);
1303         } else {
1304                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1305                         ;
1306         }
1307
1308         /* get new highest message number in room to set lrp for goto... */
1309         maxmsgnum = msgarr[num_msgs - 1];
1310
1311         /* now see if anyone else has posted in here */
1312         b = (-1);
1313         for (a = 0; a < num_msgs; ++a) {
1314                 if (msgarr[a] > highmsg) {
1315                         ++b;
1316                 }
1317         }
1318         if (msgarr) free(msgarr);
1319         msgarr = NULL;
1320
1321         /* In the Mail> room, this algorithm always counts one message
1322          * higher than in public rooms, so we decrement it by one.
1323          */
1324         if (need_recp) {
1325                 --b;
1326         }
1327
1328         if (b == 1) {
1329                 scr_printf("*** 1 additional message has been entered "
1330                         "in this room by another user.\n");
1331         }
1332         else if (b > 1) {
1333                 scr_printf("*** %d additional messages have been entered "
1334                         "in this room by other users.\n", b);
1335         }
1336     free(message.text);
1337
1338         return(0);
1339 }
1340
1341 /*
1342  * Do editing on a quoted file
1343  */
1344 void process_quote(void)
1345 {
1346         FILE *qfile, *tfile;
1347         char buf[128];
1348         int line, qstart, qend;
1349
1350         /* Unlink the second temp file as soon as it's opened, so it'll get
1351          * deleted even if the program dies
1352          */
1353         qfile = fopen(temp2, "r");
1354         unlink(temp2);
1355
1356         /* Display the quotable text with line numbers added */
1357         line = 0;
1358         if (fgets(buf, 128, qfile) == NULL) {
1359                 /* we're skipping a line here */
1360         }
1361         while (fgets(buf, 128, qfile) != NULL) {
1362                 scr_printf("%3d %s", ++line, buf);
1363         }
1364
1365         qstart = intprompt("Begin quoting at", 1, 1, line);
1366         qend = intprompt("  End quoting at", line, qstart, line);
1367
1368         rewind(qfile);
1369         line = 0;
1370         if (fgets(buf, 128, qfile) == NULL) {
1371                 /* we're skipping a line here */
1372         }
1373         tfile = fopen(temp, "w");
1374         while (fgets(buf, 128, qfile) != NULL) {
1375                 if ((++line >= qstart) && (line <= qend))
1376                         fprintf(tfile, " >%s", buf);
1377         }
1378         fprintf(tfile, " \n");
1379         fclose(qfile);
1380         fclose(tfile);
1381         chmod(temp, 0666);
1382 }
1383
1384
1385
1386 /*
1387  * List the URL's which were embedded in the previous message
1388  */
1389 void list_urls(CtdlIPC *ipc)
1390 {
1391         int i;
1392         char cmd[SIZ];
1393         int rv;
1394
1395         if (num_urls == 0) {
1396                 scr_printf("There were no URL's in the previous message.\n\n");
1397                 return;
1398         }
1399
1400         for (i = 0; i < num_urls; ++i) {
1401                 scr_printf("%3d %s\n", i + 1, urls[i]);
1402         }
1403
1404         if ((i = num_urls) != 1)
1405                 i = intprompt("Display which one", 1, 1, num_urls);
1406
1407         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1408         rv = system(cmd);
1409         if (rv != 0)
1410                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1411         scr_printf("\n");
1412 }
1413
1414
1415 /*
1416  * Run image viewer in background
1417  */
1418 int do_image_view(const char *filename)
1419 {
1420         char cmd[SIZ];
1421         pid_t childpid;
1422
1423         snprintf(cmd, sizeof cmd, imagecmd, filename);
1424         childpid = fork();
1425         if (childpid < 0) {
1426                 unlink(filename);
1427                 return childpid;
1428         }
1429
1430         if (childpid == 0) {
1431                 int retcode;
1432                 pid_t grandchildpid;
1433
1434                 grandchildpid = fork();
1435                 if (grandchildpid < 0) {
1436                         return grandchildpid;
1437                 }
1438
1439                 if (grandchildpid == 0) {
1440                         int nullfd;
1441                         int outfd = -1;
1442                         int errfd = -1;
1443
1444                         nullfd = open("/dev/null", O_WRONLY);
1445                         if (nullfd > -1) {
1446                                 dup2(1, outfd);
1447                                 dup2(2, errfd);
1448                                 dup2(nullfd, 1);
1449                                 dup2(nullfd, 2);
1450                         }
1451                         retcode = system(cmd);
1452                         if (nullfd > -1) {
1453                                 dup2(outfd, 1);
1454                                 dup2(errfd, 2);
1455                                 close(nullfd);
1456                         }
1457                         unlink(filename);
1458                         exit(retcode);
1459                 }
1460
1461                 if (grandchildpid > 0) {
1462                         exit(0);
1463                 }
1464         }
1465
1466         if (childpid > 0) {
1467                 int retcode;
1468
1469                 waitpid(childpid, &retcode, 0);
1470                 return retcode;
1471         }
1472
1473         return -1;
1474 }
1475
1476
1477 /*
1478  * View an image attached to a message
1479  */
1480 void image_view(CtdlIPC *ipc, unsigned long msg)
1481 {
1482         struct parts *ptr = last_message_parts;
1483         char part[SIZ];
1484         int found = 0;
1485
1486         /* Run through available parts */
1487         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1488                 if ((!strcasecmp(ptr->disposition, "attachment")
1489                    || !strcasecmp(ptr->disposition, "inline"))
1490                    && !strncmp(ptr->mimetype, "image/", 6)) {
1491                         found++;
1492                         if (found == 1) {
1493                                 strcpy(part, ptr->number);
1494                         }
1495                 }
1496         }
1497
1498         while (found > 0) {
1499                 if (found > 1)
1500                         strprompt("View which part (0 when done)", part, SIZ-1);
1501                 found = -found;
1502                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1503                         if ((!strcasecmp(ptr->disposition, "attachment")
1504                            || !strcasecmp(ptr->disposition, "inline"))
1505                            && !strncmp(ptr->mimetype, "image/", 6)
1506                            && !strcasecmp(ptr->number, part)) {
1507                                 char tmp[PATH_MAX];
1508                                 char buf[SIZ];
1509                                 void *file = NULL; /* The downloaded file */
1510                                 int r;
1511
1512                                 /* view image */
1513                                 found = -found;
1514                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1515                                 if (r / 100 != 2) {
1516                                         scr_printf("%s\n", buf);
1517                                 } else {
1518                                         size_t len;
1519
1520                                         len = (size_t)extract_long(buf, 0);
1521                                         progress(ipc, len, len);
1522                                         scr_flush();
1523                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1524                                         strcat(tmp, ptr->filename);
1525                                         save_buffer(file, len, tmp);
1526                                         free(file);
1527                                         do_image_view(tmp);
1528                                 }
1529                                 break;
1530                         }
1531                 }
1532                 if (found == 1)
1533                         break;
1534         }
1535 }
1536
1537
1538 /*
1539  * Read the messages in the current room
1540  */
1541 void readmsgs(CtdlIPC *ipc,
1542         enum MessageList c,             /* see listing in citadel_ipc.h */
1543         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1544         int q           /* Number of msgs to read (if c==3) */
1545 ) {
1546         int a, e, f, g, start;
1547         int savedpos;
1548         int hold_sw = 0;
1549         char arcflag = 0;
1550         char quotflag = 0;
1551         int hold_color = 0;
1552         char prtfile[PATH_MAX];
1553         char pagin;
1554         char cmd[SIZ];
1555         char targ[ROOMNAMELEN];
1556         char filename[PATH_MAX];
1557         char save_to[PATH_MAX];
1558         void *attachment = NULL;        /* Downloaded attachment */
1559         FILE *dest = NULL;              /* Alternate destination other than screen */
1560         int r;                          /* IPC response code */
1561         static int att_seq = 0;         /* Attachment download sequence number */
1562         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1563
1564         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1565
1566         if (msg_arr) {
1567                 free(msg_arr);
1568                 msg_arr = NULL;
1569         }
1570         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1571         if (r / 100 != 1) {
1572                 scr_printf("%s\n", cmd);
1573         } else {
1574                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1575                         ;
1576         }
1577
1578         if (num_msgs == 0) {    /* TODO look at this later */
1579                 if (c == LastMessages) return;
1580                 scr_printf("*** There are no ");
1581                 if (c == NewMessages) scr_printf("new ");
1582                 if (c == OldMessages) scr_printf("old ");
1583                 scr_printf("messages in this room.\n");
1584                 return;
1585         }
1586
1587         /* this loop cycles through each message... */
1588         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1589         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1590                 while (msg_arr[a] == 0L) {
1591                         a = a + rdir;
1592                         if ((a == num_msgs) || (a == (-1)))
1593                                 return;
1594                 }
1595
1596 RAGAIN:         pagin = ((arcflag == 0)
1597                          && (quotflag == 0)
1598                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1599
1600                 /* If we're doing a quote, set the screenwidth to 72 */
1601                 if (quotflag) {
1602                         hold_sw = screenwidth;
1603                         screenwidth = 72;
1604                 }
1605
1606                 /* If printing or archiving, set the screenwidth to 80 */
1607                 if (arcflag) {
1608                         hold_sw = screenwidth;
1609                         screenwidth = 80;
1610                 }
1611
1612                 /* clear parts list */
1613                 free_parts(last_message_parts);
1614                 last_message_parts = NULL;
1615
1616                 /* now read the message... */
1617                 e = read_message(ipc, msg_arr[a], pagin, dest);
1618
1619                 /* ...and set the screenwidth back if we have to */
1620                 if ((quotflag) || (arcflag)) {
1621                         screenwidth = hold_sw;
1622                 }
1623 RMSGREAD:
1624                 highest_msg_read = msg_arr[a];
1625                 if (quotflag) {
1626                         fclose(dest);
1627                         dest = NULL;
1628                         quotflag = 0;
1629                         enable_color = hold_color;
1630                         process_quote();
1631                         e = 'r';
1632                         goto DONE_QUOTING;
1633                 }
1634                 if (arcflag) {
1635                         fclose(dest);
1636                         dest = NULL;
1637                         arcflag = 0;
1638                         enable_color = hold_color;
1639                         f = fork();
1640                         if (f == 0) {
1641                                 if (freopen(prtfile, "r", stdin) == NULL) {
1642                                         /* we probably should handle the error condition here */
1643                                 }
1644                                 stty_ctdl(SB_RESTORE);
1645                                 ka_system(printcmd);
1646                                 stty_ctdl(SB_NO_INTR);
1647                                 unlink(prtfile);
1648                                 exit(0);
1649                         }
1650                         if (f > 0)
1651                                 do {
1652                                         g = wait(NULL);
1653                                 } while ((g != f) && (g >= 0));
1654                         scr_printf("Message printed.\n");
1655                 }
1656                 if (e == SIGQUIT)
1657                         return;
1658                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1659                         && (((room_flags & QR_MAILBOX) == 0)
1660                         || (rc_force_mail_prompts == 0))) {
1661                         e = 'n';
1662                 } else {
1663                         color(DIM_WHITE);
1664                         scr_printf("(");
1665                         color(BRIGHT_WHITE);
1666                         scr_printf("%d", num_msgs - a - 1);
1667                         color(DIM_WHITE);
1668                         scr_printf(") ");
1669
1670                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1671                         if (rc_url_cmd[0] && num_urls)
1672                                 keyopt("<U>RLview ");
1673                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1674                                 keyopt("<I>mages ");
1675                         keyopt("<?>help -> ");
1676
1677                         do {
1678                                 e = (inkey() & 127);
1679                                 e = tolower(e);
1680 /* return key same as <N> */ if (e == 10)
1681                                         e = 'n';
1682 /* space key same as <N> */ if (e == 32)
1683                                         e = 'n';
1684 /* del/move for aides only */
1685                                     if (  (!is_room_aide)
1686                                        && ((room_flags & QR_MAILBOX) == 0)
1687                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1688                                        ) {
1689                                         if ((e == 'd') || (e == 'm'))
1690                                                 e = 0;
1691                                 }
1692 /* print only if available */
1693                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1694                                         e = 0;
1695 /* can't file if not allowed */
1696                                     if ((e == 'f')
1697                                         && (rc_allow_attachments == 0))
1698                                         e = 0;
1699 /* link only if browser avail*/
1700                                     if ((e == 'u')
1701                                         && (IsEmptyStr(rc_url_cmd)))
1702                                         e = 0;
1703                                 if ((e == 'i')
1704                                         && (IsEmptyStr(imagecmd) || !has_images))
1705                                         e = 0;
1706                         } while ((e != 'a') && (e != 'n') && (e != 's')
1707                                  && (e != 'd') && (e != 'm') && (e != 'p')
1708                                  && (e != 'q') && (e != 'b') && (e != 'h')
1709                                  && (e != 'r') && (e != 'f') && (e != '?')
1710                                  && (e != 'u') && (e != 'c') && (e != 'y')
1711                                  && (e != 'i') && (e != 'o') );
1712                         switch (e) {
1713                         case 's':
1714                                 scr_printf("Stop");
1715                                 break;
1716                         case 'a':
1717                                 scr_printf("Again");
1718                                 break;
1719                         case 'd':
1720                                 scr_printf("Delete");
1721                                 break;
1722                         case 'm':
1723                                 scr_printf("Move");
1724                                 break;
1725                         case 'c':
1726                                 scr_printf("Copy");
1727                                 break;
1728                         case 'n':
1729                                 scr_printf("Next");
1730                                 break;
1731                         case 'p':
1732                                 scr_printf("Print");
1733                                 break;
1734                         case 'q':
1735                                 scr_printf("reply Quoted");
1736                                 break;
1737                         case 'b':
1738                                 scr_printf("Back");
1739                                 break;
1740                         case 'h':
1741                                 scr_printf("Header");
1742                                 break;
1743                         case 'r':
1744                                 scr_printf("Reply");
1745                                 break;
1746                         case 'o':
1747                                 scr_printf("Open attachments");
1748                                 break;
1749                         case 'f':
1750                                 scr_printf("File");
1751                                 break;
1752                         case 'u':
1753                                 scr_printf("URL's");
1754                                 break;
1755                         case 'y':
1756                                 scr_printf("mY next");
1757                                 break;
1758                         case 'i':
1759                                 break;
1760                         case '?':
1761                                 scr_printf("? <help>");
1762                                 break;
1763                         }
1764                         if (userflags & US_DISAPPEAR || e == 'i')
1765                                 scr_printf("\r%79s\r", "");
1766                         else
1767                                 scr_printf("\n");
1768                 }
1769 DONE_QUOTING:   switch (e) {
1770                 case '?':
1771                         scr_printf("Options available here:\n"
1772                                 " ?  Help (prints this message)\n"
1773                                 " S  Stop reading immediately\n"
1774                                 " A  Again (repeats last message)\n"
1775                                 " N  Next (continue with next message)\n"
1776                                 " Y  My Next (continue with next message you authored)\n"
1777                                 " B  Back (go back to previous message)\n");
1778                         if (  (is_room_aide)
1779                            || (room_flags & QR_MAILBOX)
1780                            || (room_flags2 & QR2_COLLABDEL)
1781                         ) {
1782                                 scr_printf(" D  Delete this message\n"
1783                                         " M  Move message to another room\n");
1784                         }
1785                         scr_printf(" C  Copy message to another room\n");
1786                         if (!IsEmptyStr(printcmd))
1787                                 scr_printf(" P  Print this message\n");
1788                         scr_printf(
1789                                 " Q  Reply to this message, quoting portions of it\n"
1790                                 " H  Headers (display message headers only)\n");
1791                         if (is_mail)
1792                                 scr_printf(" R  Reply to this message\n");
1793                         if (rc_allow_attachments) {
1794                                 scr_printf(" O  (Open attachments)\n");
1795                                 scr_printf(" F  (save attachments to a File)\n");
1796                         }
1797                         if (!IsEmptyStr(rc_url_cmd))
1798                                 scr_printf(" U  (list URL's for display)\n");
1799                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1800                                 scr_printf(" I  Image viewer\n");
1801                         scr_printf("\n");
1802                         goto RMSGREAD;
1803                 case 'p':
1804                         scr_flush();
1805                         dest = fopen(prtfile, "w");
1806                         arcflag = 1;
1807                         hold_color = enable_color;
1808                         enable_color = 0;
1809                         goto RAGAIN;
1810                 case 'q':
1811                         scr_flush();
1812                         dest = fopen(temp2, "w");
1813                         quotflag = 1;
1814                         hold_color = enable_color;
1815                         enable_color = 0;
1816                         goto RAGAIN;
1817                 case 's':
1818                         return;
1819                 case 'a':
1820                         goto RAGAIN;
1821                 case 'b':
1822                         a = a - (rdir * 2);
1823                         break;
1824                 case 'm':
1825                 case 'c':
1826                         newprompt("Enter target room: ",
1827                                   targ, ROOMNAMELEN - 1);
1828                         if (!IsEmptyStr(targ)) {
1829                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1830                                                        msg_arr[a], targ, cmd);
1831                                 scr_printf("%s\n", cmd);
1832                                 if (r / 100 == 2)
1833                                         msg_arr[a] = 0L;
1834                         } else {
1835                                 goto RMSGREAD;
1836                         }
1837                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1838                                 goto RMSGREAD;  /* the logic here sucks */
1839                         break;
1840                 case 'o':
1841                 case 'f':
1842                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1843                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1844                                         filename, &attachment, progress, cmd);
1845                         if (r / 100 != 2) {
1846                                 scr_printf("%s\n", cmd);
1847                         } else {
1848                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1849                                 /*
1850                                  * Part 1 won't have a filename; use the
1851                                  * subject of the message instead. IO
1852                                  */
1853                                 if (IsEmptyStr(filename)) {
1854                                         strcpy(filename, reply_subject);
1855                                 }
1856                                 if (e == 'o') {         /* open attachment */
1857                                         mkdir(tempdir, 0700);
1858                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1859                                                 tempdir,
1860                                                 ++att_seq,
1861                                                 filename);
1862                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1863                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1864                                         rv = system(cmd);
1865                                         if (rv != 0)
1866                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1867                                 }
1868                                 else {                  /* save attachment to disk */
1869                                         destination_directory(save_to, filename);
1870                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1871                                 }
1872                         }
1873                         if (attachment) {
1874                                 free(attachment);
1875                                 attachment = NULL;
1876                         }
1877                         goto RMSGREAD;
1878                 case 'd':
1879                         scr_printf("*** Delete this message? ");
1880                         if (yesno() == 1) {
1881                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1882                                 scr_printf("%s\n", cmd);
1883                                 if (r / 100 == 2)
1884                                         msg_arr[a] = 0L;
1885                         } else {
1886                                 goto RMSGREAD;
1887                         }
1888                         break;
1889                 case 'h':
1890                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1891                         goto RMSGREAD;
1892                 case 'r':
1893                         savedpos = num_msgs;
1894                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1895                         num_msgs = savedpos;
1896                         goto RMSGREAD;
1897                 case 'u':
1898                         list_urls(ipc);
1899                         goto RMSGREAD;
1900                 case 'i':
1901                         image_view(ipc, msg_arr[a]);
1902                         goto RMSGREAD;
1903             case 'y':
1904           { /* hack hack hack */
1905             /* find the next message by me, stay here if we find nothing */
1906             int finda;
1907             int lasta = a;
1908             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1909               {
1910                 /* This is repetitively dumb, but that's what computers are for.
1911                    We have to load up messages until we find one by us */
1912                 char buf[SIZ];
1913                 int founda = 0;
1914                 struct ctdlipcmessage *msg = NULL;
1915
1916                 /* read the header so we can get 'from=' */
1917                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1918                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1919                         a = lasta; /* meesa current */
1920                         founda = 1;
1921                 }
1922
1923                 free(msg);
1924
1925                 if (founda)
1926                         break; /* for */
1927                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1928               } /* for */
1929           } /* case 'y' */
1930       } /* switch */
1931         }                       /* end for loop */
1932 }                               /* end read routine */
1933
1934
1935
1936
1937 /*
1938  * View and edit a system message
1939  */
1940 void edit_system_message(CtdlIPC *ipc, char *which_message)
1941 {
1942         char desc[SIZ];
1943         char read_cmd[SIZ];
1944         char write_cmd[SIZ];
1945
1946         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1947         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1948         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1949         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1950 }
1951
1952
1953
1954
1955 /*
1956  * Loads the contents of a file into memory.  Caller must free the allocated
1957  * memory.
1958  */
1959 char *load_message_from_file(FILE *src)
1960 {
1961         size_t i;
1962         size_t got = 0;
1963         char *dest = NULL;
1964
1965         fseek(src, 0, SEEK_END);
1966         i = ftell(src);
1967         rewind(src);
1968
1969         dest = (char *)calloc(1, i + 1);
1970         if (!dest)
1971                 return NULL;
1972
1973         while (got < i) {
1974                 size_t g;
1975
1976                 g = fread(dest + got, 1, i - got, src);
1977                 got += g;
1978                 if (g < i - got) {
1979                         /* Interrupted system call, keep going */
1980                         if (errno == EINTR)
1981                                 continue;
1982                         /* At this point we have either EOF or error */
1983                         i = got;
1984                         break;
1985                 }
1986                 dest[i] = 0;
1987         }
1988
1989         return dest;
1990 }