textclient/src/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2017 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                 scr_printf("Entering message.  Word wrap will give you soft linebreaks.  Pressing the\n");
1215                 scr_printf("'enter' key will give you a hard linebreak and an indent.  Press 'enter' twice\n");
1216                 scr_printf("when finished.\n");
1217         }
1218
1219         /* Handle the selection of a recipient, if necessary. */
1220         strcpy(buf, "");
1221         if (need_recp == 1) {
1222                 if (axlevel >= AxProbU) {
1223                         if (is_reply) {
1224                                 strcpy(buf, reply_to);
1225                         } else {
1226                                 newprompt("Enter recipient: ", buf, SIZ-100);
1227                                 if (IsEmptyStr(buf)) {
1228                                         return (1);
1229                                 }
1230                         }
1231                 } else
1232                         strcpy(buf, "sysop");
1233         }
1234         strcpy(message.recipient, buf);
1235
1236         if (room_flags & QR_ANONOPT) {
1237                 scr_printf("Anonymous (Y/N)? ");
1238                 if (yesno() == 1)
1239                         message.anonymous = 1;
1240         }
1241
1242         /* If it's mail, we've got to check the validity of the recipient... */
1243         if (!IsEmptyStr(message.recipient)) {
1244                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1245                 if (r / 100 != 2) {
1246                         scr_printf("%s\n", buf);
1247                         return (1);
1248                 }
1249         }
1250
1251         /* Learn the number of the newest message in in the room, so we can
1252          * tell upon saving whether someone else has posted too.
1253          */
1254         num_msgs = 0;
1255         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1256         if (r / 100 != 1) {
1257                 scr_printf("%s\n", buf);
1258         } else {
1259                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1260                         ;
1261         }
1262
1263         /* Now compose the message... */
1264         if (client_make_message(ipc, temp, message.recipient,
1265            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1266             if (msgarr) free(msgarr);
1267                 return (2);
1268         }
1269
1270         /* Reopen the temp file that was created, so we can send it */
1271         fp = fopen(temp, "r");
1272
1273         if (!fp || !(message.text = load_message_from_file(fp))) {
1274                 scr_printf("*** Internal error while trying to save message!\n"
1275                         "%s: %s\n",
1276                         temp, strerror(errno));
1277                 unlink(temp);
1278                 return(errno);
1279         }
1280
1281         if (fp) fclose(fp);
1282
1283         /* Break lines that are >1024 characters, otherwise the server
1284          * will truncate them.
1285          */
1286         break_big_lines(message.text);
1287
1288         /* Transmit message to the server */
1289         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1290         if (r / 100 != 4) {
1291                 scr_printf("%s\n", buf);
1292                 return (1);
1293         }
1294
1295         /* Yes, unlink it now, so it doesn't stick around if we crash */
1296         unlink(temp);
1297
1298         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1299
1300         if (msgarr) free(msgarr);
1301         msgarr = NULL;
1302         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1303         if (r / 100 != 1) {
1304                 scr_printf("%s\n", buf);
1305         } else {
1306                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1307                         ;
1308         }
1309
1310         /* get new highest message number in room to set lrp for goto... */
1311         maxmsgnum = msgarr[num_msgs - 1];
1312
1313         /* now see if anyone else has posted in here */
1314         b = (-1);
1315         for (a = 0; a < num_msgs; ++a) {
1316                 if (msgarr[a] > highmsg) {
1317                         ++b;
1318                 }
1319         }
1320         if (msgarr) free(msgarr);
1321         msgarr = NULL;
1322
1323         /* In the Mail> room, this algorithm always counts one message
1324          * higher than in public rooms, so we decrement it by one.
1325          */
1326         if (need_recp) {
1327                 --b;
1328         }
1329
1330         if (b == 1) {
1331                 scr_printf("*** 1 additional message has been entered "
1332                         "in this room by another user.\n");
1333         }
1334         else if (b > 1) {
1335                 scr_printf("*** %d additional messages have been entered "
1336                         "in this room by other users.\n", b);
1337         }
1338     free(message.text);
1339
1340         return(0);
1341 }
1342
1343 /*
1344  * Do editing on a quoted file
1345  */
1346 void process_quote(void)
1347 {
1348         FILE *qfile, *tfile;
1349         char buf[128];
1350         int line, qstart, qend;
1351
1352         /* Unlink the second temp file as soon as it's opened, so it'll get
1353          * deleted even if the program dies
1354          */
1355         qfile = fopen(temp2, "r");
1356         unlink(temp2);
1357
1358         /* Display the quotable text with line numbers added */
1359         line = 0;
1360         if (fgets(buf, 128, qfile) == NULL) {
1361                 /* we're skipping a line here */
1362         }
1363         while (fgets(buf, 128, qfile) != NULL) {
1364                 scr_printf("%3d %s", ++line, buf);
1365         }
1366
1367         qstart = intprompt("Begin quoting at", 1, 1, line);
1368         qend = intprompt("  End quoting at", line, qstart, line);
1369
1370         rewind(qfile);
1371         line = 0;
1372         if (fgets(buf, 128, qfile) == NULL) {
1373                 /* we're skipping a line here */
1374         }
1375         tfile = fopen(temp, "w");
1376         while (fgets(buf, 128, qfile) != NULL) {
1377                 if ((++line >= qstart) && (line <= qend))
1378                         fprintf(tfile, " >%s", buf);
1379         }
1380         fprintf(tfile, " \n");
1381         fclose(qfile);
1382         fclose(tfile);
1383         chmod(temp, 0666);
1384 }
1385
1386
1387
1388 /*
1389  * List the URL's which were embedded in the previous message
1390  */
1391 void list_urls(CtdlIPC *ipc)
1392 {
1393         int i;
1394         char cmd[SIZ];
1395         int rv;
1396
1397         if (num_urls == 0) {
1398                 scr_printf("There were no URL's in the previous message.\n\n");
1399                 return;
1400         }
1401
1402         for (i = 0; i < num_urls; ++i) {
1403                 scr_printf("%3d %s\n", i + 1, urls[i]);
1404         }
1405
1406         if ((i = num_urls) != 1)
1407                 i = intprompt("Display which one", 1, 1, num_urls);
1408
1409         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1410         rv = system(cmd);
1411         if (rv != 0)
1412                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1413         scr_printf("\n");
1414 }
1415
1416
1417 /*
1418  * Run image viewer in background
1419  */
1420 int do_image_view(const char *filename)
1421 {
1422         char cmd[SIZ];
1423         pid_t childpid;
1424
1425         snprintf(cmd, sizeof cmd, imagecmd, filename);
1426         childpid = fork();
1427         if (childpid < 0) {
1428                 unlink(filename);
1429                 return childpid;
1430         }
1431
1432         if (childpid == 0) {
1433                 int retcode;
1434                 pid_t grandchildpid;
1435
1436                 grandchildpid = fork();
1437                 if (grandchildpid < 0) {
1438                         return grandchildpid;
1439                 }
1440
1441                 if (grandchildpid == 0) {
1442                         int nullfd;
1443                         int outfd = -1;
1444                         int errfd = -1;
1445
1446                         nullfd = open("/dev/null", O_WRONLY);
1447                         if (nullfd > -1) {
1448                                 dup2(1, outfd);
1449                                 dup2(2, errfd);
1450                                 dup2(nullfd, 1);
1451                                 dup2(nullfd, 2);
1452                         }
1453                         retcode = system(cmd);
1454                         if (nullfd > -1) {
1455                                 dup2(outfd, 1);
1456                                 dup2(errfd, 2);
1457                                 close(nullfd);
1458                         }
1459                         unlink(filename);
1460                         exit(retcode);
1461                 }
1462
1463                 if (grandchildpid > 0) {
1464                         exit(0);
1465                 }
1466         }
1467
1468         if (childpid > 0) {
1469                 int retcode;
1470
1471                 waitpid(childpid, &retcode, 0);
1472                 return retcode;
1473         }
1474
1475         return -1;
1476 }
1477
1478
1479 /*
1480  * View an image attached to a message
1481  */
1482 void image_view(CtdlIPC *ipc, unsigned long msg)
1483 {
1484         struct parts *ptr = last_message_parts;
1485         char part[SIZ];
1486         int found = 0;
1487
1488         /* Run through available parts */
1489         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1490                 if ((!strcasecmp(ptr->disposition, "attachment")
1491                    || !strcasecmp(ptr->disposition, "inline"))
1492                    && !strncmp(ptr->mimetype, "image/", 6)) {
1493                         found++;
1494                         if (found == 1) {
1495                                 strcpy(part, ptr->number);
1496                         }
1497                 }
1498         }
1499
1500         while (found > 0) {
1501                 if (found > 1)
1502                         strprompt("View which part (0 when done)", part, SIZ-1);
1503                 found = -found;
1504                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1505                         if ((!strcasecmp(ptr->disposition, "attachment")
1506                            || !strcasecmp(ptr->disposition, "inline"))
1507                            && !strncmp(ptr->mimetype, "image/", 6)
1508                            && !strcasecmp(ptr->number, part)) {
1509                                 char tmp[PATH_MAX];
1510                                 char buf[SIZ];
1511                                 void *file = NULL; /* The downloaded file */
1512                                 int r;
1513
1514                                 /* view image */
1515                                 found = -found;
1516                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1517                                 if (r / 100 != 2) {
1518                                         scr_printf("%s\n", buf);
1519                                 } else {
1520                                         size_t len;
1521
1522                                         len = (size_t)extract_long(buf, 0);
1523                                         progress(ipc, len, len);
1524                                         scr_flush();
1525                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1526                                         strcat(tmp, ptr->filename);
1527                                         save_buffer(file, len, tmp);
1528                                         free(file);
1529                                         do_image_view(tmp);
1530                                 }
1531                                 break;
1532                         }
1533                 }
1534                 if (found == 1)
1535                         break;
1536         }
1537 }
1538
1539
1540 /*
1541  * Read the messages in the current room
1542  */
1543 void readmsgs(CtdlIPC *ipc,
1544         enum MessageList c,             /* see listing in citadel_ipc.h */
1545         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1546         int q           /* Number of msgs to read (if c==3) */
1547 ) {
1548         int a, e, f, g, start;
1549         int savedpos;
1550         int hold_sw = 0;
1551         char arcflag = 0;
1552         char quotflag = 0;
1553         int hold_color = 0;
1554         char prtfile[PATH_MAX];
1555         char pagin;
1556         char cmd[SIZ];
1557         char targ[ROOMNAMELEN];
1558         char filename[PATH_MAX];
1559         char save_to[PATH_MAX];
1560         void *attachment = NULL;        /* Downloaded attachment */
1561         FILE *dest = NULL;              /* Alternate destination other than screen */
1562         int r;                          /* IPC response code */
1563         static int att_seq = 0;         /* Attachment download sequence number */
1564         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1565
1566         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1567
1568         if (msg_arr) {
1569                 free(msg_arr);
1570                 msg_arr = NULL;
1571         }
1572         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1573         if (r / 100 != 1) {
1574                 scr_printf("%s\n", cmd);
1575         } else {
1576                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1577                         ;
1578         }
1579
1580         if (num_msgs == 0) {    /* TODO look at this later */
1581                 if (c == LastMessages) return;
1582                 scr_printf("*** There are no ");
1583                 if (c == NewMessages) scr_printf("new ");
1584                 if (c == OldMessages) scr_printf("old ");
1585                 scr_printf("messages in this room.\n");
1586                 return;
1587         }
1588
1589         /* this loop cycles through each message... */
1590         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1591         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1592                 while (msg_arr[a] == 0L) {
1593                         a = a + rdir;
1594                         if ((a == num_msgs) || (a == (-1)))
1595                                 return;
1596                 }
1597
1598 RAGAIN:         pagin = ((arcflag == 0)
1599                          && (quotflag == 0)
1600                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1601
1602                 /* If we're doing a quote, set the screenwidth to 72 */
1603                 if (quotflag) {
1604                         hold_sw = screenwidth;
1605                         screenwidth = 72;
1606                 }
1607
1608                 /* If printing or archiving, set the screenwidth to 80 */
1609                 if (arcflag) {
1610                         hold_sw = screenwidth;
1611                         screenwidth = 80;
1612                 }
1613
1614                 /* clear parts list */
1615                 free_parts(last_message_parts);
1616                 last_message_parts = NULL;
1617
1618                 /* now read the message... */
1619                 e = read_message(ipc, msg_arr[a], pagin, dest);
1620
1621                 /* ...and set the screenwidth back if we have to */
1622                 if ((quotflag) || (arcflag)) {
1623                         screenwidth = hold_sw;
1624                 }
1625 RMSGREAD:
1626                 highest_msg_read = msg_arr[a];
1627                 if (quotflag) {
1628                         fclose(dest);
1629                         dest = NULL;
1630                         quotflag = 0;
1631                         enable_color = hold_color;
1632                         process_quote();
1633                         e = 'r';
1634                         goto DONE_QUOTING;
1635                 }
1636                 if (arcflag) {
1637                         fclose(dest);
1638                         dest = NULL;
1639                         arcflag = 0;
1640                         enable_color = hold_color;
1641                         f = fork();
1642                         if (f == 0) {
1643                                 if (freopen(prtfile, "r", stdin) == NULL) {
1644                                         /* we probably should handle the error condition here */
1645                                 }
1646                                 stty_ctdl(SB_RESTORE);
1647                                 ka_system(printcmd);
1648                                 stty_ctdl(SB_NO_INTR);
1649                                 unlink(prtfile);
1650                                 exit(0);
1651                         }
1652                         if (f > 0)
1653                                 do {
1654                                         g = wait(NULL);
1655                                 } while ((g != f) && (g >= 0));
1656                         scr_printf("Message printed.\n");
1657                 }
1658                 if (e == SIGQUIT)
1659                         return;
1660                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1661                         && (((room_flags & QR_MAILBOX) == 0)
1662                         || (rc_force_mail_prompts == 0))) {
1663                         e = 'n';
1664                 } else {
1665                         color(DIM_WHITE);
1666                         scr_printf("(");
1667                         color(BRIGHT_WHITE);
1668                         scr_printf("%d", num_msgs - a - 1);
1669                         color(DIM_WHITE);
1670                         scr_printf(") ");
1671
1672                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1673                         if (rc_url_cmd[0] && num_urls)
1674                                 keyopt("<U>RLview ");
1675                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1676                                 keyopt("<I>mages ");
1677                         keyopt("<?>help -> ");
1678
1679                         do {
1680                                 e = (inkey() & 127);
1681                                 e = tolower(e);
1682 /* return key same as <N> */ if (e == 10)
1683                                         e = 'n';
1684 /* space key same as <N> */ if (e == 32)
1685                                         e = 'n';
1686 /* del/move for aides only */
1687                                     if (  (!is_room_aide)
1688                                        && ((room_flags & QR_MAILBOX) == 0)
1689                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1690                                        ) {
1691                                         if ((e == 'd') || (e == 'm'))
1692                                                 e = 0;
1693                                 }
1694 /* print only if available */
1695                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1696                                         e = 0;
1697 /* can't file if not allowed */
1698                                     if ((e == 'f')
1699                                         && (rc_allow_attachments == 0))
1700                                         e = 0;
1701 /* link only if browser avail*/
1702                                     if ((e == 'u')
1703                                         && (IsEmptyStr(rc_url_cmd)))
1704                                         e = 0;
1705                                 if ((e == 'i')
1706                                         && (IsEmptyStr(imagecmd) || !has_images))
1707                                         e = 0;
1708                         } while ((e != 'a') && (e != 'n') && (e != 's')
1709                                  && (e != 'd') && (e != 'm') && (e != 'p')
1710                                  && (e != 'q') && (e != 'b') && (e != 'h')
1711                                  && (e != 'r') && (e != 'f') && (e != '?')
1712                                  && (e != 'u') && (e != 'c') && (e != 'y')
1713                                  && (e != 'i') && (e != 'o') );
1714                         switch (e) {
1715                         case 's':
1716                                 scr_printf("Stop");
1717                                 break;
1718                         case 'a':
1719                                 scr_printf("Again");
1720                                 break;
1721                         case 'd':
1722                                 scr_printf("Delete");
1723                                 break;
1724                         case 'm':
1725                                 scr_printf("Move");
1726                                 break;
1727                         case 'c':
1728                                 scr_printf("Copy");
1729                                 break;
1730                         case 'n':
1731                                 scr_printf("Next");
1732                                 break;
1733                         case 'p':
1734                                 scr_printf("Print");
1735                                 break;
1736                         case 'q':
1737                                 scr_printf("reply Quoted");
1738                                 break;
1739                         case 'b':
1740                                 scr_printf("Back");
1741                                 break;
1742                         case 'h':
1743                                 scr_printf("Header");
1744                                 break;
1745                         case 'r':
1746                                 scr_printf("Reply");
1747                                 break;
1748                         case 'o':
1749                                 scr_printf("Open attachments");
1750                                 break;
1751                         case 'f':
1752                                 scr_printf("File");
1753                                 break;
1754                         case 'u':
1755                                 scr_printf("URL's");
1756                                 break;
1757                         case 'y':
1758                                 scr_printf("mY next");
1759                                 break;
1760                         case 'i':
1761                                 break;
1762                         case '?':
1763                                 scr_printf("? <help>");
1764                                 break;
1765                         }
1766                         if (userflags & US_DISAPPEAR || e == 'i')
1767                                 scr_printf("\r%79s\r", "");
1768                         else
1769                                 scr_printf("\n");
1770                 }
1771 DONE_QUOTING:   switch (e) {
1772                 case '?':
1773                         scr_printf("Options available here:\n"
1774                                 " ?  Help (prints this message)\n"
1775                                 " S  Stop reading immediately\n"
1776                                 " A  Again (repeats last message)\n"
1777                                 " N  Next (continue with next message)\n"
1778                                 " Y  My Next (continue with next message you authored)\n"
1779                                 " B  Back (go back to previous message)\n");
1780                         if (  (is_room_aide)
1781                            || (room_flags & QR_MAILBOX)
1782                            || (room_flags2 & QR2_COLLABDEL)
1783                         ) {
1784                                 scr_printf(" D  Delete this message\n"
1785                                         " M  Move message to another room\n");
1786                         }
1787                         scr_printf(" C  Copy message to another room\n");
1788                         if (!IsEmptyStr(printcmd))
1789                                 scr_printf(" P  Print this message\n");
1790                         scr_printf(
1791                                 " Q  Reply to this message, quoting portions of it\n"
1792                                 " H  Headers (display message headers only)\n");
1793                         if (is_mail)
1794                                 scr_printf(" R  Reply to this message\n");
1795                         if (rc_allow_attachments) {
1796                                 scr_printf(" O  (Open attachments)\n");
1797                                 scr_printf(" F  (save attachments to a File)\n");
1798                         }
1799                         if (!IsEmptyStr(rc_url_cmd))
1800                                 scr_printf(" U  (list URL's for display)\n");
1801                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1802                                 scr_printf(" I  Image viewer\n");
1803                         scr_printf("\n");
1804                         goto RMSGREAD;
1805                 case 'p':
1806                         scr_flush();
1807                         dest = fopen(prtfile, "w");
1808                         arcflag = 1;
1809                         hold_color = enable_color;
1810                         enable_color = 0;
1811                         goto RAGAIN;
1812                 case 'q':
1813                         scr_flush();
1814                         dest = fopen(temp2, "w");
1815                         quotflag = 1;
1816                         hold_color = enable_color;
1817                         enable_color = 0;
1818                         goto RAGAIN;
1819                 case 's':
1820                         return;
1821                 case 'a':
1822                         goto RAGAIN;
1823                 case 'b':
1824                         a = a - (rdir * 2);
1825                         break;
1826                 case 'm':
1827                 case 'c':
1828                         newprompt("Enter target room: ",
1829                                   targ, ROOMNAMELEN - 1);
1830                         if (!IsEmptyStr(targ)) {
1831                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1832                                                        msg_arr[a], targ, cmd);
1833                                 scr_printf("%s\n", cmd);
1834                                 if (r / 100 == 2)
1835                                         msg_arr[a] = 0L;
1836                         } else {
1837                                 goto RMSGREAD;
1838                         }
1839                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1840                                 goto RMSGREAD;  /* the logic here sucks */
1841                         break;
1842                 case 'o':
1843                 case 'f':
1844                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1845                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1846                                         filename, &attachment, progress, cmd);
1847                         if (r / 100 != 2) {
1848                                 scr_printf("%s\n", cmd);
1849                         } else {
1850                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1851                                 /*
1852                                  * Part 1 won't have a filename; use the
1853                                  * subject of the message instead. IO
1854                                  */
1855                                 if (IsEmptyStr(filename)) {
1856                                         strcpy(filename, reply_subject);
1857                                 }
1858                                 if (e == 'o') {         /* open attachment */
1859                                         mkdir(tempdir, 0700);
1860                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1861                                                 tempdir,
1862                                                 ++att_seq,
1863                                                 filename);
1864                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1865                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1866                                         rv = system(cmd);
1867                                         if (rv != 0)
1868                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1869                                 }
1870                                 else {                  /* save attachment to disk */
1871                                         destination_directory(save_to, filename);
1872                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1873                                 }
1874                         }
1875                         if (attachment) {
1876                                 free(attachment);
1877                                 attachment = NULL;
1878                         }
1879                         goto RMSGREAD;
1880                 case 'd':
1881                         scr_printf("*** Delete this message? ");
1882                         if (yesno() == 1) {
1883                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1884                                 scr_printf("%s\n", cmd);
1885                                 if (r / 100 == 2)
1886                                         msg_arr[a] = 0L;
1887                         } else {
1888                                 goto RMSGREAD;
1889                         }
1890                         break;
1891                 case 'h':
1892                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1893                         goto RMSGREAD;
1894                 case 'r':
1895                         savedpos = num_msgs;
1896                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1897                         num_msgs = savedpos;
1898                         goto RMSGREAD;
1899                 case 'u':
1900                         list_urls(ipc);
1901                         goto RMSGREAD;
1902                 case 'i':
1903                         image_view(ipc, msg_arr[a]);
1904                         goto RMSGREAD;
1905             case 'y':
1906           { /* hack hack hack */
1907             /* find the next message by me, stay here if we find nothing */
1908             int finda;
1909             int lasta = a;
1910             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1911               {
1912                 /* This is repetitively dumb, but that's what computers are for.
1913                    We have to load up messages until we find one by us */
1914                 char buf[SIZ];
1915                 int founda = 0;
1916                 struct ctdlipcmessage *msg = NULL;
1917
1918                 /* read the header so we can get 'from=' */
1919                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1920                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1921                         a = lasta; /* meesa current */
1922                         founda = 1;
1923                 }
1924
1925                 free(msg);
1926
1927                 if (founda)
1928                         break; /* for */
1929                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1930               } /* for */
1931           } /* case 'y' */
1932       } /* switch */
1933         }                       /* end for loop */
1934 }                               /* end read routine */
1935
1936
1937
1938
1939 /*
1940  * View and edit a system message
1941  */
1942 void edit_system_message(CtdlIPC *ipc, char *which_message)
1943 {
1944         char desc[SIZ];
1945         char read_cmd[SIZ];
1946         char write_cmd[SIZ];
1947
1948         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1949         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1950         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1951         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1952 }
1953
1954
1955
1956
1957 /*
1958  * Loads the contents of a file into memory.  Caller must free the allocated
1959  * memory.
1960  */
1961 char *load_message_from_file(FILE *src)
1962 {
1963         size_t i;
1964         size_t got = 0;
1965         char *dest = NULL;
1966
1967         fseek(src, 0, SEEK_END);
1968         i = ftell(src);
1969         rewind(src);
1970
1971         dest = (char *)calloc(1, i + 1);
1972         if (!dest)
1973                 return NULL;
1974
1975         while (got < i) {
1976                 size_t g;
1977
1978                 g = fread(dest + got, 1, i - got, src);
1979                 got += g;
1980                 if (g < i - got) {
1981                         /* Interrupted system call, keep going */
1982                         if (errno == EINTR)
1983                                 continue;
1984                         /* At this point we have either EOF or error */
1985                         i = got;
1986                         break;
1987                 }
1988                 dest[i] = 0;
1989         }
1990
1991         return dest;
1992 }