citadel/textclient/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2012 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.h"
  47 #include "citadel_ipc.h"
  48 #include "citadel_decls.h"
  49 #include "messages.h"
  50 #include "commands.h"
  51 #include "tuiconfig.h"
  52 #include "rooms.h"
  53 #ifndef HAVE_SNPRINTF
  54 #include "snprintf.h"
  55 #endif
  56 #include "screen.h"
  57
  58 #define MAXWORDBUF SIZ
  59 #define NO_REPLY_TO     "nobody ... xxxxxx"
  60
  61 char reply_to[SIZ];
  62 char reply_subject[SIZ];
  63 char reply_references[SIZ];
  64 char reply_inreplyto[SIZ];
  65
  66 struct cittext {
  67         struct cittext *next;
  68         char text[MAXWORDBUF];
  69 };
  70
  71 void stty_ctdl(int cmd);
  72 int haschar(const char *st, int ch);
  73 int file_checksum(char *filename);
  74 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  75
  76 unsigned long *msg_arr = NULL;
  77 int msg_arr_size = 0;
  78 int num_msgs;
  79 extern char room_name[];
  80 extern char tempdir[];
  81 extern unsigned room_flags;
  82 extern unsigned room_flags2;
  83 extern int entmsg_ok;
  84 extern long highest_msg_read;
  85 extern char temp[];
  86 extern char temp2[];
  87 extern int screenwidth;
  88 extern int screenheight;
  89 extern long maxmsgnum;
  90 extern char is_mail;
  91 extern char is_aide;
  92 extern char is_room_aide;
  93 extern char fullname[];
  94 extern char axlevel;
  95 extern unsigned userflags;
  96 extern char sigcaught;
  97 extern char printcmd[];
  98 extern int rc_allow_attachments;
  99 extern int rc_display_message_numbers;
 100 extern int rc_force_mail_prompts;
 101 extern int editor_pid;
 102 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 103 int num_urls = 0;
 104 char urls[MAXURLS][SIZ];
 105 char imagecmd[SIZ];
 106 int has_images = 0;                             /* Current msg has images */
 107 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 108
 109
 110
 111 void ka_sigcatch(int signum)
 112 {
 113         alarm(S_KEEPALIVE);
 114         signal(SIGALRM, ka_sigcatch);
 115         CtdlIPCNoop(ipc_for_signal_handlers);
 116 }
 117
 118
 119 /*
 120  * server keep-alive version of wait() (needed for external editor)
 121  */
 122 pid_t ka_wait(int *kstatus)
 123 {
 124         pid_t p;
 125
 126         alarm(S_KEEPALIVE);
 127         signal(SIGALRM, ka_sigcatch);
 128         do {
 129                 errno = 0;
 130                 p = wait(kstatus);
 131         } while (errno == EINTR);
 132         signal(SIGALRM, SIG_IGN);
 133         alarm(0);
 134         return (p);
 135 }
 136
 137
 138 /*
 139  * version of system() that uses ka_wait()
 140  */
 141 int ka_system(char *shc)
 142 {
 143         pid_t childpid;
 144         pid_t waitpid;
 145         int retcode;
 146
 147         childpid = fork();
 148         if (childpid < 0) {
 149                 color(BRIGHT_RED);
 150                 perror("Cannot fork");
 151                 color(DIM_WHITE);
 152                 return ((pid_t) childpid);
 153         }
 154
 155         if (childpid == 0) {
 156                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 157                 exit(127);
 158         }
 159
 160         if (childpid > 0) {
 161                 do {
 162                         waitpid = ka_wait(&retcode);
 163                 } while (waitpid != childpid);
 164                 return (retcode);
 165         }
 166
 167         return (-1);
 168 }
 169
 170
 171
 172 /*
 173  * add a newline to the buffer...
 174  */
 175 void add_newline(struct cittext *textlist)
 176 {
 177         struct cittext *ptr;
 178
 179         ptr = textlist;
 180         while (ptr->next != NULL)
 181                 ptr = ptr->next;
 182
 183         while (ptr->text[strlen(ptr->text) - 1] == 32)
 184                 ptr->text[strlen(ptr->text) - 1] = 0;
 185         /* strcat(ptr->text,"\n"); */
 186
 187         ptr->next = (struct cittext *)
 188             malloc(sizeof(struct cittext));
 189         ptr = ptr->next;
 190         ptr->next = NULL;
 191         strcpy(ptr->text, "");
 192 }
 193
 194
 195 /*
 196  * add a word to the buffer...
 197  */
 198 void add_word(struct cittext *textlist, char *wordbuf)
 199 {
 200         struct cittext *ptr;
 201
 202         ptr = textlist;
 203         while (ptr->next != NULL)
 204                 ptr = ptr->next;
 205
 206         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 207                 ptr->next = (struct cittext *)
 208                     malloc(sizeof(struct cittext));
 209                 ptr = ptr->next;
 210                 ptr->next = NULL;
 211                 strcpy(ptr->text, "");
 212         }
 213
 214         strcat(ptr->text, wordbuf);
 215         strcat(ptr->text, " ");
 216 }
 217
 218
 219 /*
 220  * begin editing of an opened file pointed to by fp
 221  */
 222 void citedit(FILE *fp)
 223 {
 224         int a, prev, finished, b, last_space;
 225         int appending = 0;
 226         struct cittext *textlist = NULL;
 227         struct cittext *ptr;
 228         char wordbuf[MAXWORDBUF];
 229         int rv = 0;
 230
 231         /* first, load the text into the buffer */
 232         fseek(fp, 0L, 0);
 233         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 234         textlist->next = NULL;
 235         strcpy(textlist->text, "");
 236
 237         strcpy(wordbuf, "");
 238         prev = (-1);
 239         while (a = getc(fp), a >= 0) {
 240                 appending = 1;
 241                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 242                         add_word(textlist, wordbuf);
 243                         strcpy(wordbuf, "");
 244                         if ((prev == 13) || (prev == 10)) {
 245                                 add_word(textlist, "\n");
 246                                 add_newline(textlist);
 247                                 add_word(textlist, "");
 248                         }
 249                 } else {
 250                         wordbuf[strlen(wordbuf) + 1] = 0;
 251                         wordbuf[strlen(wordbuf)] = a;
 252                 }
 253                 if (strlen(wordbuf) + 3 > screenwidth) {
 254                         add_word(textlist, wordbuf);
 255                         strcpy(wordbuf, "");
 256                 }
 257                 prev = a;
 258         }
 259
 260         /* get text */
 261         finished = 0;
 262         prev = (appending ? 13 : (-1));
 263         strcpy(wordbuf, "");
 264         async_ka_start();
 265         do {
 266                 a = inkey();
 267                 if (a == 10)
 268                         a = 13;
 269                 if (a == 9)
 270                         a = 32;
 271                 if (a == 127)
 272                         a = 8;
 273
 274                 if ((a != 32) && (prev == 13)) {
 275                         add_word(textlist, "\n");
 276                         scr_printf(" ");
 277                 }
 278
 279                 if ((a == 32) && (prev == 13)) {
 280                         add_word(textlist, "\n");
 281                         add_newline(textlist);
 282                 }
 283
 284                 if (a == 8) {
 285                         if (!IsEmptyStr(wordbuf)) {
 286                                 wordbuf[strlen(wordbuf) - 1] = 0;
 287                                 scr_putc(8);
 288                                 scr_putc(32);
 289                                 scr_putc(8);
 290                         }
 291                 } else if (a == 23) {
 292                         do {
 293                                 wordbuf[strlen(wordbuf) - 1] = 0;
 294                                 scr_putc(8);
 295                                 scr_putc(32);
 296                                 scr_putc(8);
 297                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 298                 } else if (a == 13) {
 299                         scr_printf("\n");
 300                         if (IsEmptyStr(wordbuf))
 301                                 finished = 1;
 302                         else {
 303                                 for (b = 0; b < strlen(wordbuf); ++b)
 304                                         if (wordbuf[b] == 32) {
 305                                                 wordbuf[b] = 0;
 306                                                 add_word(textlist,
 307                                                          wordbuf);
 308                                                 strcpy(wordbuf,
 309                                                        &wordbuf[b + 1]);
 310                                                 b = 0;
 311                                         }
 312                                 add_word(textlist, wordbuf);
 313                                 strcpy(wordbuf, "");
 314                         }
 315                 } else {
 316                         scr_putc(a);
 317                         wordbuf[strlen(wordbuf) + 1] = 0;
 318                         wordbuf[strlen(wordbuf)] = a;
 319                 }
 320                 if ((strlen(wordbuf) + 3) > screenwidth) {
 321                         last_space = (-1);
 322                         for (b = 0; b < strlen(wordbuf); ++b)
 323                                 if (wordbuf[b] == 32)
 324                                         last_space = b;
 325                         if (last_space >= 0) {
 326                                 for (b = 0; b < strlen(wordbuf); ++b)
 327                                         if (wordbuf[b] == 32) {
 328                                                 wordbuf[b] = 0;
 329                                                 add_word(textlist,
 330                                                          wordbuf);
 331                                                 strcpy(wordbuf,
 332                                                        &wordbuf[b + 1]);
 333                                                 b = 0;
 334                                         }
 335                                 for (b = 0; b < strlen(wordbuf); ++b) {
 336                                         scr_putc(8);
 337                                         scr_putc(32);
 338                                         scr_putc(8);
 339                                 }
 340                                 scr_printf("\n%s", wordbuf);
 341                         } else {
 342                                 add_word(textlist, wordbuf);
 343                                 strcpy(wordbuf, "");
 344                                 scr_printf("\n");
 345                         }
 346                 }
 347                 prev = a;
 348         } while (finished == 0);
 349         async_ka_end();
 350
 351         /* write the buffer back to disk */
 352         fseek(fp, 0L, 0);
 353         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 354                 fprintf(fp, "%s", ptr->text);
 355         }
 356         putc(10, fp);
 357         fflush(fp);
 358         rv = ftruncate(fileno(fp), ftell(fp));
 359         if (rv < 0)
 360                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 361
 362
 363         /* and deallocate the memory we used */
 364         while (textlist != NULL) {
 365                 ptr = textlist->next;
 366                 free(textlist);
 367                 textlist = ptr;
 368         }
 369 }
 370
 371
 372 /*
 373  * Free the struct parts
 374  */
 375 void free_parts(struct parts *p)
 376 {
 377         struct parts *a_part = p;
 378
 379         while (a_part) {
 380                 struct parts *q;
 381
 382                 q = a_part;
 383                 a_part = a_part->next;
 384                 free(q);
 385         }
 386 }
 387
 388
 389 /*
 390  * This is a mini RFC2047 decoder.
 391  * It only handles strings encoded from UTF-8 as Quoted-printable.
 392  */
 393 void mini_2047_decode(char *s) {
 394         if (!s) return;
 395
 396         char *qstart = strstr(s, "=?UTF-8?Q?");
 397         if (!qstart) return;
 398
 399         char *qend = strstr(s, "?=");
 400         if (!qend) return;
 401
 402         if (qend <= qstart) return;
 403
 404         strcpy(qstart, &qstart[10]);
 405         qend -= 10;
 406
 407         char *p = qstart;
 408         while (p < qend) {
 409
 410                 if (p[0] == '=') {
 411
 412                         char ch[3];
 413                         ch[0] = p[1];
 414                         ch[1] = p[2];
 415                         ch[2] = p[3];
 416                         int c;
 417                         sscanf(ch, "%02x", &c);
 418                         p[0] = c;
 419                         strcpy(&p[1], &p[3]);
 420                         qend -= 2;
 421                 }
 422
 423                 if (p[0] == '_') {
 424                         p[0] = ' ';
 425                 }
 426
 427                 ++p;
 428         }
 429
 430         strcpy(qend, &qend[2]);
 431 }
 432
 433 /*
 434  * Read a message from the server
 435  */
 436 int read_message(CtdlIPC *ipc,
 437         long num,   /* message number */
 438         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 439         FILE *dest) /* Destination file, NULL for screen */
 440 {
 441         char buf[SIZ];
 442         char now[SIZ];
 443         int format_type = 0;
 444         int fr = 0;
 445         int nhdr = 0;
 446         struct ctdlipcmessage *message = NULL;
 447         int r;                          /* IPC response code */
 448         char *converted_text = NULL;
 449         char *lineptr;
 450         char *nextline;
 451         char *searchptr;
 452         int i;
 453         char ch;
 454         int linelen;
 455         int final_line_is_blank = 0;
 456
 457         has_images = 0;
 458
 459         sigcaught = 0;
 460         stty_ctdl(1);
 461
 462         strcpy(reply_to, NO_REPLY_TO);
 463         strcpy(reply_subject, "");
 464         strcpy(reply_references, "");
 465         strcpy(reply_inreplyto, "");
 466
 467         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 468         if (r / 100 != 1) {
 469                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 470                 stty_ctdl(0);
 471                 free(message->text);
 472                 free_parts(message->attachments);
 473                 free(message);
 474                 return (0);
 475         }
 476
 477         if (dest) {
 478                 fprintf(dest, "\n ");
 479         } else {
 480                 scr_printf("\n");
 481                 if (pagin != 2)
 482                         scr_printf(" ");
 483         }
 484         if (pagin == 1 && !dest) {
 485                 color(BRIGHT_CYAN);
 486         }
 487
 488         /* View headers only */
 489         if (pagin == 2) {
 490                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 491                                 message->nhdr ? "yes" : "no",
 492                                 message->author, message->type,
 493                                 message->msgid);
 494                 if (!IsEmptyStr(message->subject)) {
 495                         scr_printf("subj=%s\n", message->subject);
 496                 }
 497                 if (!IsEmptyStr(message->email)) {
 498                         scr_printf("rfca=%s\n", message->email);
 499                 }
 500                 scr_printf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 501                                 message->hnod, message->room,
 502                                 message->node,
 503                                 asctime(localtime(&message->time)));
 504                 if (!IsEmptyStr(message->recipient)) {
 505                         scr_printf("rcpt=%s\n", message->recipient);
 506                 }
 507                 if (message->attachments) {
 508                         struct parts *ptr;
 509
 510                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 511                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 512                                         ptr->name, ptr->filename, ptr->number,
 513                                         ptr->disposition, ptr->mimetype,
 514                                         ptr->length
 515                                 );
 516                         }
 517                 }
 518                 scr_printf("\n");
 519                 stty_ctdl(0);
 520                 free(message->text);
 521                 free_parts(message->attachments);
 522                 free(message);
 523                 return (0);
 524         }
 525
 526         if (rc_display_message_numbers) {
 527                 if (dest) {
 528                         fprintf(dest, "[#%s] ", message->msgid);
 529                 } else {
 530                         color(DIM_WHITE);
 531                         scr_printf("[");
 532                         color(BRIGHT_WHITE);
 533                         scr_printf("#%s", message->msgid);
 534                         color(DIM_WHITE);
 535                         scr_printf("] ");
 536                 }
 537         }
 538         if (nhdr == 1 && !is_room_aide) {
 539                 if (dest) {
 540                         fprintf(dest, " ****");
 541                 } else {
 542                         scr_printf(" ****");
 543                 }
 544         } else {
 545                 fmt_date(now, sizeof now, message->time, 0);
 546                 if (dest) {
 547                         fprintf(dest, "%s from %s ", now, message->author);
 548                         if (!IsEmptyStr(message->email)) {
 549                                 fprintf(dest, "<%s> ", message->email);
 550                         }
 551                 } else {
 552                         color(BRIGHT_CYAN);
 553                         scr_printf("%s ", now);
 554                         color(DIM_WHITE);
 555                         scr_printf("from ");
 556                         color(BRIGHT_CYAN);
 557                         scr_printf("%s ", message->author);
 558                         if (!IsEmptyStr(message->email)) {
 559                                 color(DIM_WHITE);
 560                                 scr_printf("<");
 561                                 color(BRIGHT_BLUE);
 562                                 scr_printf("%s", message->email);
 563                                         color(DIM_WHITE);
 564                                 scr_printf("> ");
 565                         }
 566                 }
 567                 if (!IsEmptyStr(message->node)) {
 568                         if ((room_flags & QR_NETWORK)
 569                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 570                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 571                                 if (IsEmptyStr(message->email)) {
 572                                         if (dest) {
 573                                                 fprintf(dest, "@%s ", message->node);
 574                                         } else {
 575                                                 color(DIM_WHITE);
 576                                                 scr_printf("@");
 577                                                 color(BRIGHT_YELLOW);
 578                                                 scr_printf("%s ", message->node);
 579                                         }
 580                                 }
 581                         }
 582                 }
 583                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 584                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 585                         if (dest) {
 586                                 fprintf(dest, "(%s) ", message->hnod);
 587                         } else {
 588                                 color(DIM_WHITE);
 589                                 scr_printf("(");
 590                                 color(BRIGHT_WHITE);
 591                                 scr_printf("%s", message->hnod);
 592                                 color(DIM_WHITE);
 593                                 scr_printf(") ");
 594                         }
 595                 }
 596                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 597                         if (dest) {
 598                                 fprintf(dest, "in %s> ", message->room);
 599                         } else {
 600                                 color(DIM_WHITE);
 601                                 scr_printf("in ");
 602                                 color(BRIGHT_MAGENTA);
 603                                 scr_printf("%s> ", message->room);
 604                         }
 605                 }
 606                 if (!IsEmptyStr(message->recipient)) {
 607                         if (dest) {
 608                                 fprintf(dest, "to %s ", message->recipient);
 609                         } else {
 610                                 color(DIM_WHITE);
 611                                 scr_printf("to ");
 612                                 color(BRIGHT_CYAN);
 613                                 scr_printf("%s ", message->recipient);
 614                         }
 615                 }
 616         }
 617
 618         if (dest) {
 619                 fprintf(dest, "\n");
 620         } else {
 621                 scr_printf("\n");
 622         }
 623
 624         /* Set the reply-to address to an Internet e-mail address if possible
 625          */
 626         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 627                 if (!IsEmptyStr(message->author)) {
 628                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 629                 }
 630                 else {
 631                         safestrncpy(reply_to, message->email, sizeof reply_to);
 632                 }
 633         }
 634
 635         /* But if we can't do that, set it to a Citadel address.
 636          */
 637         if (!strcmp(reply_to, NO_REPLY_TO)) {
 638                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 639                          message->author, message->node);
 640         }
 641
 642         if (message->msgid != NULL) {
 643                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 644         }
 645
 646         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 647                 safestrncpy(reply_references, message->references, sizeof reply_references);
 648         }
 649
 650         if (message->subject != NULL) {
 651                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 652                 if (!IsEmptyStr(message->subject)) {
 653                         if (dest) {
 654                                 fprintf(dest, "Subject: %s\n", message->subject);
 655                         } else {
 656                                 color(DIM_WHITE);
 657                                 scr_printf("Subject: ");
 658                                 color(BRIGHT_CYAN);
 659                                 mini_2047_decode(message->subject);
 660                                 scr_printf("%s\n", message->subject);
 661                         }
 662                 }
 663         }
 664
 665         if (pagin == 1 && !dest) {
 666                 color(BRIGHT_WHITE);
 667         }
 668
 669         /******* end of header output, start of message text output *******/
 670
 671         /*
 672          * Convert HTML to plain text, formatting for the actual width
 673          * of the client screen.
 674          */
 675         if (!strcasecmp(message->content_type, "text/html")) {
 676                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 677                 if (converted_text != NULL) {
 678                         free(message->text);
 679                         message->text = converted_text;
 680                         format_type = 1;
 681                 }
 682         }
 683
 684         /* Text/plain is a different type */
 685         if (!strcasecmp(message->content_type, "text/plain")) {
 686                 format_type = 1;
 687         }
 688
 689         /* Extract URL's */
 690         num_urls = 0;   /* Start with a clean slate */
 691         searchptr = message->text;
 692         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 693                 searchptr = strstr(searchptr, "http://");
 694                 if (searchptr != NULL) {
 695                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 696                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 697                                 ch = urls[num_urls][i];
 698                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 699                                     ch == ' ' || ch == '\n') {
 700                                         urls[num_urls][i] = 0;
 701                                         break;
 702                                 }
 703                         }
 704                         num_urls++;
 705                         ++searchptr;
 706                 }
 707         }
 708
 709         /*
 710          * Here we go
 711          */
 712         if (format_type == 0) {
 713                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 714         } else {
 715                 /* renderer for text/plain */
 716
 717                 lineptr = message->text;
 718
 719                 do {
 720                         nextline = strchr(lineptr, '\n');
 721                         if (nextline != NULL) {
 722                                 *nextline = 0;
 723                                 ++nextline;
 724                                 if (*nextline == 0) nextline = NULL;
 725                         }
 726
 727                         if (sigcaught == 0) {
 728                                 linelen = strlen(lineptr);
 729                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 730                                         lineptr[--linelen] = 0;
 731                                 }
 732                                 if (dest) {
 733                                         fprintf(dest, "%s\n", lineptr);
 734                                 } else {
 735                                         scr_printf("%s\n", lineptr);
 736                                 }
 737                         }
 738                         if (lineptr[0] == 0) final_line_is_blank = 1;
 739                         else final_line_is_blank = 0;
 740                         lineptr = nextline;
 741                 } while (nextline);
 742                 fr = sigcaught;
 743         }
 744         if (!final_line_is_blank) {
 745                 if (dest) {
 746                         fprintf(dest, "\n");
 747                 }
 748                 else {
 749                         scr_printf("\n");
 750                         fr = sigcaught;
 751                 }
 752         }
 753
 754         /* Enumerate any attachments */
 755         if ( (pagin == 1) && (message->attachments) ) {
 756                 struct parts *ptr;
 757
 758                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 759                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 760                            || (!strcasecmp(ptr->disposition, "inline"))
 761                            || (!strcasecmp(ptr->disposition, ""))
 762                         ) {
 763                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 764                                    && (!IsEmptyStr(ptr->mimetype))
 765                                 ) {
 766                                         color(DIM_WHITE);
 767                                         scr_printf("Part ");
 768                                         color(BRIGHT_MAGENTA);
 769                                         scr_printf("%s", ptr->number);
 770                                         color(DIM_WHITE);
 771                                         scr_printf(": ");
 772                                         color(BRIGHT_CYAN);
 773                                         scr_printf("%s", ptr->filename);
 774                                         color(DIM_WHITE);
 775                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 776                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 777                                                 has_images++;
 778                                         }
 779                                 }
 780                         }
 781                 }
 782         }
 783
 784         /* Save the attachments info for later */
 785         last_message_parts = message->attachments;
 786
 787         /* Now we're done */
 788         free(message->text);
 789         free(message);
 790
 791         if (pagin == 1 && !dest)
 792                 color(DIM_WHITE);
 793         stty_ctdl(0);
 794         return (fr);
 795 }
 796
 797 /*
 798  * replace string function for the built-in editor
 799  */
 800 void replace_string(char *filename, long int startpos)
 801 {
 802         char buf[512];
 803         char srch_str[128];
 804         char rplc_str[128];
 805         FILE *fp;
 806         int a;
 807         long rpos, wpos;
 808         char *ptr;
 809         int substitutions = 0;
 810         long msglen = 0L;
 811         int rv;
 812
 813         scr_printf("Enter text to be replaced:\n: ");
 814         ctdl_getline(srch_str, (sizeof(srch_str)-1) );
 815         if (IsEmptyStr(srch_str)) {
 816                 return;
 817         }
 818
 819         scr_printf("Enter text to replace it with:\n: ");
 820         ctdl_getline(rplc_str, (sizeof(rplc_str)-1) );
 821
 822         fp = fopen(filename, "r+");
 823         if (fp == NULL) {
 824                 return;
 825         }
 826
 827         wpos = startpos;
 828         fseek(fp, startpos, 0);
 829         strcpy(buf, "");
 830         while (a = getc(fp), a > 0) {
 831                 ++msglen;
 832                 buf[strlen(buf) + 1] = 0;
 833                 buf[strlen(buf)] = a;
 834                 if (strlen(buf) >= strlen(srch_str)) {
 835                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 836                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 837                                 strcpy(ptr, rplc_str);
 838                                 ++substitutions;
 839                         }
 840                 }
 841                 if (strlen(buf) > 384) {
 842                         rpos = ftell(fp);
 843                         fseek(fp, wpos, 0);
 844                         rv = fwrite((char *) buf, 128, 1, fp);
 845                         if (rv < 0) {
 846                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 847                                 break; /*whoopsi! */
 848                         }
 849                         strcpy(buf, &buf[128]);
 850                         wpos = ftell(fp);
 851                         fseek(fp, rpos, 0);
 852                 }
 853         }
 854         fseek(fp, wpos, 0);
 855         if (!IsEmptyStr(buf)) {
 856                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 857         }
 858         wpos = ftell(fp);
 859         fclose(fp);
 860         rv = truncate(filename, wpos);
 861         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 862 }
 863
 864 /*
 865  * Function to begin composing a new message
 866  */
 867 int client_make_message(CtdlIPC *ipc,
 868                         char *filename,         /* temporary file name */
 869                         char *recipient,        /* NULL if it's not mail */
 870                         int is_anonymous,
 871                         int format_type,
 872                         int mode,
 873                         char *subject,          /* buffer to store subject line */
 874                         int subject_required
 875 ) {
 876         FILE *fp;
 877         int a, b, e_ex_code;
 878         long beg;
 879         char datestr[SIZ];
 880         char header[SIZ];
 881         int cksum = 0;
 882
 883         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 884                 scr_printf("*** No editor available; using built-in editor.\n");
 885                 mode = 0;
 886         }
 887
 888         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 889         header[0] = 0;
 890
 891         if (room_flags & QR_ANONONLY && !recipient) {
 892                 snprintf(header, sizeof header, " ****");
 893         }
 894         else {
 895                 snprintf(header, sizeof header,
 896                         " %s from %s",
 897                         datestr,
 898                         (is_anonymous ? "[anonymous]" : fullname)
 899                         );
 900                 if (!IsEmptyStr(recipient)) {
 901                         size_t tmp = strlen(header);
 902                         snprintf(&header[tmp], sizeof header - tmp,
 903                                 " to %s", recipient);
 904                 }
 905         }
 906         scr_printf("%s\n", header);
 907         if (subject != NULL) if (!IsEmptyStr(subject)) {
 908                 scr_printf("Subject: %s\n", subject);
 909         }
 910
 911         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 912                 newprompt("Subject: ", subject, 70);
 913         }
 914
 915         if (mode == 1) {
 916                 scr_printf("(Press ctrl-d when finished)\n");
 917         }
 918
 919         if (mode == 0) {
 920                 fp = fopen(filename, "r");
 921                 if (fp != NULL) {
 922                         fmout(screenwidth, fp, NULL, NULL, 0);
 923                         beg = ftell(fp);
 924                         if (beg < 0)
 925                                 scr_printf("failed to get stream position %s\n",
 926                                            strerror(errno));
 927                         fclose(fp);
 928                 } else {
 929                         fp = fopen(filename, "w");
 930                         if (fp == NULL) {
 931                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 932                                         filename, strerror(errno)
 933                                 );
 934                         return(1);
 935                         }
 936                         fclose(fp);
 937                 }
 938         }
 939
 940 ME1:    switch (mode) {
 941
 942         case 0:
 943                 fp = fopen(filename, "r+");
 944                 if (fp == NULL) {
 945                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 946                                 filename, strerror(errno)
 947                         );
 948                         return(1);
 949                 }
 950                 citedit(fp);
 951                 fclose(fp);
 952                 goto MECR;
 953
 954         case 1:
 955                 fp = fopen(filename, "a");
 956                 if (fp == NULL) {
 957                         scr_printf("*** Error opening temp file!\n"
 958                                 "    %s: %s\n",
 959                                 filename, strerror(errno));
 960                         return(1);
 961                 }
 962                 do {
 963                         a = inkey();
 964                         if (a == 255)
 965                                 a = 32;
 966                         if (a == 13)
 967                                 a = 10;
 968                         if (a != 4) {
 969                                 putc(a, fp);
 970                                 scr_putc(a);
 971                         }
 972                         if (a == 10)
 973                                 scr_putc(10);
 974                 } while (a != 4);
 975                 fclose(fp);
 976                 break;
 977
 978         case 2:
 979         default:        /* allow 2+ modes */
 980                 e_ex_code = 1;  /* start with a failed exit code */
 981                 stty_ctdl(SB_RESTORE);
 982                 editor_pid = fork();
 983                 cksum = file_checksum(filename);
 984                 if (editor_pid == 0) {
 985                         char tmp[SIZ];
 986
 987                         chmod(filename, 0600);
 988                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 989                         putenv(tmp);
 990                         execlp(editor_path, editor_path, filename, NULL);
 991                         exit(1);
 992                 }
 993                 if (editor_pid > 0)
 994                         do {
 995                                 e_ex_code = 0;
 996                                 b = ka_wait(&e_ex_code);
 997                         } while ((b != editor_pid) && (b >= 0));
 998                 editor_pid = (-1);
 999                 stty_ctdl(0);
1000                 break;
1001         }
1002
1003 MECR:   if (mode >= 2) {
1004                 if (file_checksum(filename) == cksum) {
1005                         scr_printf("*** Aborted message.\n");
1006                         e_ex_code = 1;
1007                 }
1008                 if (e_ex_code == 0) {
1009                         goto MEFIN;
1010                 }
1011                 goto MEABT2;
1012         }
1013
1014         b = keymenu("Entry command (? for options)",
1015                 "<A>bort|"
1016                 "<C>ontinue|"
1017                 "<S>ave message|"
1018                 "<P>rint formatted|"
1019                 "add s<U>bject|"
1020                 "<R>eplace string|"
1021                 "<H>old message"
1022         );
1023
1024         if (b == 'a') goto MEABT;
1025         if (b == 'c') goto ME1;
1026         if (b == 's') goto MEFIN;
1027         if (b == 'p') {
1028                 scr_printf(" %s from %s", datestr, fullname);
1029                 if (!IsEmptyStr(recipient)) {
1030                         scr_printf(" to %s", recipient);
1031                 }
1032                 scr_printf("\n");
1033                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1034                         scr_printf("Subject: %s\n", subject);
1035                 }
1036                 fp = fopen(filename, "r");
1037                 if (fp != NULL) {
1038                         fmout(screenwidth, fp, NULL, NULL, 0);
1039                         beg = ftell(fp);
1040                         if (beg < 0)
1041                                 scr_printf("failed to get stream position %s\n",
1042                                            strerror(errno));
1043                         fclose(fp);
1044                 }
1045                 goto MECR;
1046         }
1047         if (b == 'r') {
1048                 replace_string(filename, 0L);
1049                 goto MECR;
1050         }
1051         if (b == 'h') {
1052                 return (2);
1053         }
1054         if (b == 'u') {
1055                 if (subject != NULL) {
1056                         newprompt("Subject: ", subject, 70);
1057                 }
1058                 goto MECR;
1059         }
1060
1061 MEFIN:  return (0);
1062
1063 MEABT:  scr_printf("Are you sure? ");
1064         if (yesno() == 0) {
1065                 goto ME1;
1066         }
1067 MEABT2: unlink(filename);
1068         return (2);
1069 }
1070
1071
1072 /*
1073  * Make sure there's room in msg_arr[] for at least one more.
1074  */
1075 void check_msg_arr_size(void) {
1076         if ((num_msgs + 1) > msg_arr_size) {
1077                 msg_arr_size += 512;
1078                 msg_arr = realloc(msg_arr,
1079                         ((sizeof(long)) * msg_arr_size) );
1080         }
1081 }
1082
1083
1084 /*
1085  * break_big_lines()  -  break up lines that are >1024 characters
1086  *                       otherwise the server will truncate
1087  */
1088 void break_big_lines(char *msg) {
1089         char *ptr;
1090         char *break_here;
1091
1092         if (msg == NULL) {
1093                 return;
1094         }
1095
1096         ptr = msg;
1097         while (strlen(ptr) > 1000) {
1098                 break_here = strchr(&ptr[900], ' ');
1099                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1100                         break_here = &ptr[999];
1101                 }
1102                 *break_here = '\n';
1103                 ptr = break_here++;
1104         }
1105 }
1106
1107
1108 /*
1109  * entmsg()  -  edit and create a message
1110  *              returns 0 if message was saved
1111  */
1112 int entmsg(CtdlIPC *ipc,
1113                 int is_reply,   /* nonzero if this was a <R>eply command */
1114                 int c,          /* mode */
1115                 int masquerade  /* prompt for a non-default display name? */
1116 ) {
1117         char buf[SIZ];
1118         int a, b;
1119         int need_recp = 0;
1120         int mode;
1121         long highmsg = 0L;
1122         FILE *fp;
1123         char subject[SIZ];
1124         struct ctdlipcmessage message;
1125         unsigned long *msgarr = NULL;
1126         int r;                  /* IPC response code */
1127         int subject_required = 0;
1128
1129         if (!entmsg_ok) {
1130                 scr_printf("You may not enter messages in this type of room.\n");
1131                 return(1);
1132         }
1133
1134         if (c > 0) {
1135                 mode = 1;
1136         }
1137         else {
1138                 mode = 0;
1139         }
1140
1141         strcpy(subject, "");
1142
1143         /*
1144          * First, check to see if we have permission to enter a message in
1145          * this room.  The server will return an error code if we can't.
1146          */
1147         strcpy(message.recipient, "");
1148         strcpy(message.author, "");
1149         strcpy(message.subject, "");
1150         strcpy(message.references, "");
1151         message.text = "";              /* point to "", changes later */
1152         message.anonymous = 0;
1153         message.type = mode;
1154
1155         if (masquerade) {
1156                 newprompt("Display name for this message: ", message.author, 40);
1157         }
1158
1159         if (is_reply) {
1160
1161                 if (!IsEmptyStr(reply_subject)) {
1162                         if (!strncasecmp(reply_subject,
1163                            "Re: ", 3)) {
1164                                 strcpy(message.subject, reply_subject);
1165                         }
1166                         else {
1167                                 snprintf(message.subject,
1168                                         sizeof message.subject,
1169                                         "Re: %s",
1170                                         reply_subject);
1171                         }
1172                 }
1173
1174                 /* Trim down excessively long lists of thread references.  We eliminate the
1175                  * second one in the list so that the thread root remains intact.
1176                  */
1177                 int rrtok = num_tokens(reply_references, '|');
1178                 int rrlen = strlen(reply_references);
1179                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1180                         remove_token(reply_references, 1, '|');
1181                 }
1182
1183                 snprintf(message.references, sizeof message.references, "%s%s%s",
1184                         reply_references,
1185                         (IsEmptyStr(reply_references) ? "" : "|"),
1186                         reply_inreplyto
1187                 );
1188         }
1189
1190         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1191
1192         if (r / 100 != 2 && r / 10 != 57) {
1193                 scr_printf("%s\n", buf);
1194                 return (1);
1195         }
1196
1197         /* Error code 570 is special.  It means that we CAN enter a message
1198          * in this room, but a recipient needs to be specified.
1199          */
1200         need_recp = 0;
1201         if (r / 10 == 57) {
1202                 need_recp = 1;
1203         }
1204
1205         /* If the user is a dumbass, tell them how to type. */
1206         if ((userflags & US_EXPERT) == 0) {
1207                 formout(ipc, "entermsg");
1208         }
1209
1210         /* Handle the selection of a recipient, if necessary. */
1211         strcpy(buf, "");
1212         if (need_recp == 1) {
1213                 if (axlevel >= AxProbU) {
1214                         if (is_reply) {
1215                                 strcpy(buf, reply_to);
1216                         } else {
1217                                 scr_printf("Enter recipient: ");
1218                                 ctdl_getline(buf, (SIZ-100) );
1219                                 if (IsEmptyStr(buf))
1220                                         return (1);
1221                         }
1222                 } else
1223                         strcpy(buf, "sysop");
1224         }
1225         strcpy(message.recipient, buf);
1226
1227         if (room_flags & QR_ANONOPT) {
1228                 scr_printf("Anonymous (Y/N)? ");
1229                 if (yesno() == 1)
1230                         message.anonymous = 1;
1231         }
1232
1233         /* If it's mail, we've got to check the validity of the recipient... */
1234         if (!IsEmptyStr(message.recipient)) {
1235                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1236                 if (r / 100 != 2) {
1237                         scr_printf("%s\n", buf);
1238                         return (1);
1239                 }
1240         }
1241
1242         /* Learn the number of the newest message in in the room, so we can
1243          * tell upon saving whether someone else has posted too.
1244          */
1245         num_msgs = 0;
1246         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1247         if (r / 100 != 1) {
1248                 scr_printf("%s\n", buf);
1249         } else {
1250                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1251                         ;
1252         }
1253
1254         /* Now compose the message... */
1255         if (client_make_message(ipc, temp, message.recipient,
1256            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1257             if (msgarr) free(msgarr);
1258                 return (2);
1259         }
1260
1261         /* Reopen the temp file that was created, so we can send it */
1262         fp = fopen(temp, "r");
1263
1264         if (!fp || !(message.text = load_message_from_file(fp))) {
1265                 scr_printf("*** Internal error while trying to save message!\n"
1266                         "%s: %s\n",
1267                         temp, strerror(errno));
1268                 unlink(temp);
1269                 return(errno);
1270         }
1271
1272         if (fp) fclose(fp);
1273
1274         /* Break lines that are >1024 characters, otherwise the server
1275          * will truncate them.
1276          */
1277         break_big_lines(message.text);
1278
1279         /* Transmit message to the server */
1280         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1281         if (r / 100 != 4) {
1282                 scr_printf("%s\n", buf);
1283                 return (1);
1284         }
1285
1286         /* Yes, unlink it now, so it doesn't stick around if we crash */
1287         unlink(temp);
1288
1289         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1290
1291         if (msgarr) free(msgarr);
1292         msgarr = NULL;
1293         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1294         if (r / 100 != 1) {
1295                 scr_printf("%s\n", buf);
1296         } else {
1297                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1298                         ;
1299         }
1300
1301         /* get new highest message number in room to set lrp for goto... */
1302         maxmsgnum = msgarr[num_msgs - 1];
1303
1304         /* now see if anyone else has posted in here */
1305         b = (-1);
1306         for (a = 0; a < num_msgs; ++a) {
1307                 if (msgarr[a] > highmsg) {
1308                         ++b;
1309                 }
1310         }
1311         if (msgarr) free(msgarr);
1312         msgarr = NULL;
1313
1314         /* In the Mail> room, this algorithm always counts one message
1315          * higher than in public rooms, so we decrement it by one.
1316          */
1317         if (need_recp) {
1318                 --b;
1319         }
1320
1321         if (b == 1) {
1322                 scr_printf("*** 1 additional message has been entered "
1323                         "in this room by another user.\n");
1324         }
1325         else if (b > 1) {
1326                 scr_printf("*** %d additional messages have been entered "
1327                         "in this room by other users.\n", b);
1328         }
1329     free(message.text);
1330
1331         return(0);
1332 }
1333
1334 /*
1335  * Do editing on a quoted file
1336  */
1337 void process_quote(void)
1338 {
1339         FILE *qfile, *tfile;
1340         char buf[128];
1341         int line, qstart, qend;
1342
1343         /* Unlink the second temp file as soon as it's opened, so it'll get
1344          * deleted even if the program dies
1345          */
1346         qfile = fopen(temp2, "r");
1347         unlink(temp2);
1348
1349         /* Display the quotable text with line numbers added */
1350         line = 0;
1351         if (fgets(buf, 128, qfile) == NULL) {
1352                 /* we're skipping a line here */
1353         }
1354         while (fgets(buf, 128, qfile) != NULL) {
1355                 scr_printf("%3d %s", ++line, buf);
1356         }
1357         scr_printf("Begin quoting at [1] : ");
1358         ctdl_getline(buf, 4);
1359         qstart = (buf[0] == 0) ? (1) : atoi(buf);
1360         scr_printf("  End quoting at [%d] : ", line);
1361         ctdl_getline(buf, 4);
1362         qend = (buf[0] == 0) ? (line) : atoi(buf);
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 }