citadel/textclient/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2010 by the citadel.org team
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "sysdep.h"
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <sys/types.h>
  25 #include <fcntl.h>
  26 #include <stdio.h>
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <signal.h>
  30 #include <errno.h>
  31 #include <limits.h>
  32 #include <sys/wait.h>
  33 #include <sys/stat.h>
  34
  35 #if TIME_WITH_SYS_TIME
  36 # include <sys/time.h>
  37 # include <time.h>
  38 #else
  39 # if HAVE_SYS_TIME_H
  40 #  include <sys/time.h>
  41 # else
  42 #  include <time.h>
  43 # endif
  44 #endif
  45
  46 #ifdef HAVE_PTHREAD_H
  47 #include <pthread.h>
  48 #endif
  49
  50 #include <stdarg.h>
  51 #include <libcitadel.h>
  52 #include "citadel.h"
  53 #include "citadel_ipc.h"
  54 #include "citadel_decls.h"
  55 #include "messages.h"
  56 #include "commands.h"
  57 #include "rooms.h"
  58 #ifndef HAVE_SNPRINTF
  59 #include "snprintf.h"
  60 #endif
  61 #include "screen.h"
  62
  63 #define MAXWORDBUF SIZ
  64 #define NO_REPLY_TO     "nobody ... xxxxxx"
  65
  66 char reply_to[SIZ];
  67 char reply_subject[SIZ];
  68 char reply_references[SIZ];
  69 char reply_inreplyto[SIZ];
  70
  71 struct cittext {
  72         struct cittext *next;
  73         char text[MAXWORDBUF];
  74 };
  75
  76 void stty_ctdl(int cmd);
  77 int haschar(const char *st, int ch);
  78 void ctdl_getline(char *string, int lim);
  79 int file_checksum(char *filename);
  80 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  81
  82 unsigned long *msg_arr = NULL;
  83 int msg_arr_size = 0;
  84 int num_msgs;
  85 char rc_alt_semantics;
  86 extern char room_name[];
  87 extern char tempdir[];
  88 extern unsigned room_flags;
  89 extern unsigned room_flags2;
  90 extern int entmsg_ok;
  91 extern long highest_msg_read;
  92 extern char temp[];
  93 extern char temp2[];
  94 extern int screenwidth;
  95 extern int screenheight;
  96 extern long maxmsgnum;
  97 extern char is_mail;
  98 extern char is_aide;
  99 extern char is_room_aide;
 100 extern char fullname[];
 101 extern char axlevel;
 102 extern unsigned userflags;
 103 extern char sigcaught;
 104 extern char printcmd[];
 105 extern int rc_allow_attachments;
 106 extern int rc_display_message_numbers;
 107 extern int rc_force_mail_prompts;
 108 extern int editor_pid;
 109 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 110 int num_urls = 0;
 111 char urls[MAXURLS][SIZ];
 112 char imagecmd[SIZ];
 113 int has_images = 0;                             /* Current msg has images */
 114 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 115
 116
 117
 118 void ka_sigcatch(int signum)
 119 {
 120         alarm(S_KEEPALIVE);
 121         signal(SIGALRM, ka_sigcatch);
 122         CtdlIPCNoop(ipc_for_signal_handlers);
 123 }
 124
 125
 126 /*
 127  * server keep-alive version of wait() (needed for external editor)
 128  */
 129 pid_t ka_wait(int *kstatus)
 130 {
 131         pid_t p;
 132
 133         alarm(S_KEEPALIVE);
 134         signal(SIGALRM, ka_sigcatch);
 135         do {
 136                 errno = 0;
 137                 p = wait(kstatus);
 138         } while (errno == EINTR);
 139         signal(SIGALRM, SIG_IGN);
 140         alarm(0);
 141         return (p);
 142 }
 143
 144
 145 /*
 146  * version of system() that uses ka_wait()
 147  */
 148 int ka_system(char *shc)
 149 {
 150         pid_t childpid;
 151         pid_t waitpid;
 152         int retcode;
 153
 154         childpid = fork();
 155         if (childpid < 0) {
 156                 color(BRIGHT_RED);
 157                 perror("Cannot fork");
 158                 color(DIM_WHITE);
 159                 return ((pid_t) childpid);
 160         }
 161
 162         if (childpid == 0) {
 163                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 164                 exit(127);
 165         }
 166
 167         if (childpid > 0) {
 168                 do {
 169                         waitpid = ka_wait(&retcode);
 170                 } while (waitpid != childpid);
 171                 return (retcode);
 172         }
 173
 174         return (-1);
 175 }
 176
 177
 178
 179 /*
 180  * add a newline to the buffer...
 181  */
 182 void add_newline(struct cittext *textlist)
 183 {
 184         struct cittext *ptr;
 185
 186         ptr = textlist;
 187         while (ptr->next != NULL)
 188                 ptr = ptr->next;
 189
 190         while (ptr->text[strlen(ptr->text) - 1] == 32)
 191                 ptr->text[strlen(ptr->text) - 1] = 0;
 192         /* strcat(ptr->text,"\n"); */
 193
 194         ptr->next = (struct cittext *)
 195             malloc(sizeof(struct cittext));
 196         ptr = ptr->next;
 197         ptr->next = NULL;
 198         strcpy(ptr->text, "");
 199 }
 200
 201
 202 /*
 203  * add a word to the buffer...
 204  */
 205 void add_word(struct cittext *textlist, char *wordbuf)
 206 {
 207         struct cittext *ptr;
 208
 209         ptr = textlist;
 210         while (ptr->next != NULL)
 211                 ptr = ptr->next;
 212
 213         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 214                 ptr->next = (struct cittext *)
 215                     malloc(sizeof(struct cittext));
 216                 ptr = ptr->next;
 217                 ptr->next = NULL;
 218                 strcpy(ptr->text, "");
 219         }
 220
 221         strcat(ptr->text, wordbuf);
 222         strcat(ptr->text, " ");
 223 }
 224
 225
 226 /*
 227  * begin editing of an opened file pointed to by fp
 228  */
 229 void citedit(FILE *fp)
 230 {
 231         int a, prev, finished, b, last_space;
 232         int appending = 0;
 233         struct cittext *textlist = NULL;
 234         struct cittext *ptr;
 235         char wordbuf[MAXWORDBUF];
 236         int rv = 0;
 237
 238         /* first, load the text into the buffer */
 239         fseek(fp, 0L, 0);
 240         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 241         textlist->next = NULL;
 242         strcpy(textlist->text, "");
 243
 244         strcpy(wordbuf, "");
 245         prev = (-1);
 246         while (a = getc(fp), a >= 0) {
 247                 appending = 1;
 248                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 249                         add_word(textlist, wordbuf);
 250                         strcpy(wordbuf, "");
 251                         if ((prev == 13) || (prev == 10)) {
 252                                 add_word(textlist, "\n");
 253                                 add_newline(textlist);
 254                                 add_word(textlist, "");
 255                         }
 256                 } else {
 257                         wordbuf[strlen(wordbuf) + 1] = 0;
 258                         wordbuf[strlen(wordbuf)] = a;
 259                 }
 260                 if (strlen(wordbuf) + 3 > screenwidth) {
 261                         add_word(textlist, wordbuf);
 262                         strcpy(wordbuf, "");
 263                 }
 264                 prev = a;
 265         }
 266
 267         /* get text */
 268         finished = 0;
 269         prev = (appending ? 13 : (-1));
 270         strcpy(wordbuf, "");
 271         async_ka_start();
 272         do {
 273                 a = inkey();
 274                 if (a == 10)
 275                         a = 13;
 276                 if (a == 9)
 277                         a = 32;
 278                 if (a == 127)
 279                         a = 8;
 280
 281                 if ((a != 32) && (prev == 13)) {
 282                         add_word(textlist, "\n");
 283                         scr_printf(" ");
 284                 }
 285
 286                 if ((a == 32) && (prev == 13)) {
 287                         add_word(textlist, "\n");
 288                         add_newline(textlist);
 289                 }
 290
 291                 if (a == 8) {
 292                         if (!IsEmptyStr(wordbuf)) {
 293                                 wordbuf[strlen(wordbuf) - 1] = 0;
 294                                 scr_putc(8);
 295                                 scr_putc(32);
 296                                 scr_putc(8);
 297                         }
 298                 } else if (a == 23) {
 299                         do {
 300                                 wordbuf[strlen(wordbuf) - 1] = 0;
 301                                 scr_putc(8);
 302                                 scr_putc(32);
 303                                 scr_putc(8);
 304                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 305                 } else if (a == 13) {
 306                         scr_printf("\n");
 307                         if (IsEmptyStr(wordbuf))
 308                                 finished = 1;
 309                         else {
 310                                 for (b = 0; b < strlen(wordbuf); ++b)
 311                                         if (wordbuf[b] == 32) {
 312                                                 wordbuf[b] = 0;
 313                                                 add_word(textlist,
 314                                                          wordbuf);
 315                                                 strcpy(wordbuf,
 316                                                        &wordbuf[b + 1]);
 317                                                 b = 0;
 318                                         }
 319                                 add_word(textlist, wordbuf);
 320                                 strcpy(wordbuf, "");
 321                         }
 322                 } else {
 323                         scr_putc(a);
 324                         wordbuf[strlen(wordbuf) + 1] = 0;
 325                         wordbuf[strlen(wordbuf)] = a;
 326                 }
 327                 if ((strlen(wordbuf) + 3) > screenwidth) {
 328                         last_space = (-1);
 329                         for (b = 0; b < strlen(wordbuf); ++b)
 330                                 if (wordbuf[b] == 32)
 331                                         last_space = b;
 332                         if (last_space >= 0) {
 333                                 for (b = 0; b < strlen(wordbuf); ++b)
 334                                         if (wordbuf[b] == 32) {
 335                                                 wordbuf[b] = 0;
 336                                                 add_word(textlist,
 337                                                          wordbuf);
 338                                                 strcpy(wordbuf,
 339                                                        &wordbuf[b + 1]);
 340                                                 b = 0;
 341                                         }
 342                                 for (b = 0; b < strlen(wordbuf); ++b) {
 343                                         scr_putc(8);
 344                                         scr_putc(32);
 345                                         scr_putc(8);
 346                                 }
 347                                 scr_printf("\n%s", wordbuf);
 348                         } else {
 349                                 add_word(textlist, wordbuf);
 350                                 strcpy(wordbuf, "");
 351                                 scr_printf("\n");
 352                         }
 353                 }
 354                 prev = a;
 355         } while (finished == 0);
 356         async_ka_end();
 357
 358         /* write the buffer back to disk */
 359         fseek(fp, 0L, 0);
 360         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 361                 fprintf(fp, "%s", ptr->text);
 362         }
 363         putc(10, fp);
 364         fflush(fp);
 365         rv = ftruncate(fileno(fp), ftell(fp));
 366         if (rv < 0)
 367                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 368
 369
 370         /* and deallocate the memory we used */
 371         while (textlist != NULL) {
 372                 ptr = textlist->next;
 373                 free(textlist);
 374                 textlist = ptr;
 375         }
 376 }
 377
 378
 379 /*
 380  * Free the struct parts
 381  */
 382 void free_parts(struct parts *p)
 383 {
 384         struct parts *a_part = p;
 385
 386         while (a_part) {
 387                 struct parts *q;
 388
 389                 q = a_part;
 390                 a_part = a_part->next;
 391                 free(q);
 392         }
 393 }
 394
 395
 396 /*
 397  * Read a message from the server
 398  */
 399 int read_message(CtdlIPC *ipc,
 400         long num,   /* message number */
 401         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 402         FILE *dest) /* Destination file, NULL for screen */
 403 {
 404         char buf[SIZ];
 405         char now[SIZ];
 406         int format_type = 0;
 407         int fr = 0;
 408         int nhdr = 0;
 409         struct ctdlipcmessage *message = NULL;
 410         int r;                          /* IPC response code */
 411         char *converted_text = NULL;
 412         char *lineptr;
 413         char *nextline;
 414         char *searchptr;
 415         int i;
 416         char ch;
 417         int linelen;
 418         int final_line_is_blank = 0;
 419
 420         has_images = 0;
 421
 422         sigcaught = 0;
 423         stty_ctdl(1);
 424
 425         strcpy(reply_to, NO_REPLY_TO);
 426         strcpy(reply_subject, "");
 427         strcpy(reply_references, "");
 428         strcpy(reply_inreplyto, "");
 429
 430         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 431         if (r / 100 != 1) {
 432                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 433                 stty_ctdl(0);
 434                 free(message->text);
 435                 free_parts(message->attachments);
 436                 free(message);
 437                 return (0);
 438         }
 439
 440         if (dest) {
 441                 fprintf(dest, "\n ");
 442         } else {
 443                 scr_printf("\n");
 444                 if (pagin != 2)
 445                         scr_printf(" ");
 446         }
 447         if (pagin == 1 && !dest) {
 448                 color(BRIGHT_CYAN);
 449         }
 450
 451         /* View headers only */
 452         if (pagin == 2) {
 453                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 454                                 message->nhdr ? "yes" : "no",
 455                                 message->author, message->type,
 456                                 message->msgid);
 457                 if (!IsEmptyStr(message->subject)) {
 458                         scr_printf("subj=%s\n", message->subject);
 459                 }
 460                 if (!IsEmptyStr(message->email)) {
 461                         scr_printf("rfca=%s\n", message->email);
 462                 }
 463                 scr_printf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 464                                 message->hnod, message->room,
 465                                 message->node,
 466                                 asctime(localtime(&message->time)));
 467                 if (!IsEmptyStr(message->recipient)) {
 468                         scr_printf("rcpt=%s\n", message->recipient);
 469                 }
 470                 if (message->attachments) {
 471                         struct parts *ptr;
 472
 473                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 474                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 475                                         ptr->name, ptr->filename, ptr->number,
 476                                         ptr->disposition, ptr->mimetype,
 477                                         ptr->length);
 478                         }
 479                 }
 480                 scr_printf("\n");
 481                 stty_ctdl(0);
 482                 free(message->text);
 483                 free_parts(message->attachments);
 484                 free(message);
 485                 return (0);
 486         }
 487
 488         if (rc_display_message_numbers) {
 489                 if (dest) {
 490                         fprintf(dest, "[#%s] ", message->msgid);
 491                 } else {
 492                         color(DIM_WHITE);
 493                         scr_printf("[");
 494                         color(BRIGHT_WHITE);
 495                         scr_printf("#%s", message->msgid);
 496                         color(DIM_WHITE);
 497                         scr_printf("] ");
 498                 }
 499         }
 500         if (nhdr == 1 && !is_room_aide) {
 501                 if (dest) {
 502                         fprintf(dest, " ****");
 503                 } else {
 504                         scr_printf(" ****");
 505                 }
 506         } else {
 507                 fmt_date(now, sizeof now, message->time, 0);
 508                 if (dest) {
 509                         fprintf(dest, "%s from %s ", now, message->author);
 510                         if (!IsEmptyStr(message->email)) {
 511                                 fprintf(dest, "<%s> ", message->email);
 512                         }
 513                 } else {
 514                         color(BRIGHT_CYAN);
 515                         scr_printf("%s ", now);
 516                         color(DIM_WHITE);
 517                         scr_printf("from ");
 518                         color(BRIGHT_CYAN);
 519                         scr_printf("%s ", message->author);
 520                         if (!IsEmptyStr(message->email)) {
 521                                 color(DIM_WHITE);
 522                                 scr_printf("<");
 523                                 color(BRIGHT_BLUE);
 524                                 scr_printf("%s", message->email);
 525                                         color(DIM_WHITE);
 526                                 scr_printf("> ");
 527                         }
 528                 }
 529                 if (!IsEmptyStr(message->node)) {
 530                         if ((room_flags & QR_NETWORK)
 531                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 532                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 533                                 if (IsEmptyStr(message->email)) {
 534                                         if (dest) {
 535                                                 fprintf(dest, "@%s ", message->node);
 536                                         } else {
 537                                                 color(DIM_WHITE);
 538                                                 scr_printf("@");
 539                                                 color(BRIGHT_YELLOW);
 540                                                 scr_printf("%s ", message->node);
 541                                         }
 542                                 }
 543                         }
 544                 }
 545                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 546                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 547                         if (dest) {
 548                                 fprintf(dest, "(%s) ", message->hnod);
 549                         } else {
 550                                 color(DIM_WHITE);
 551                                 scr_printf("(");
 552                                 color(BRIGHT_WHITE);
 553                                 scr_printf("%s", message->hnod);
 554                                 color(DIM_WHITE);
 555                                 scr_printf(") ");
 556                         }
 557                 }
 558                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 559                         if (dest) {
 560                                 fprintf(dest, "in %s> ", message->room);
 561                         } else {
 562                                 color(DIM_WHITE);
 563                                 scr_printf("in ");
 564                                 color(BRIGHT_MAGENTA);
 565                                 scr_printf("%s> ", message->room);
 566                         }
 567                 }
 568                 if (!IsEmptyStr(message->recipient)) {
 569                         if (dest) {
 570                                 fprintf(dest, "to %s ", message->recipient);
 571                         } else {
 572                                 color(DIM_WHITE);
 573                                 scr_printf("to ");
 574                                 color(BRIGHT_CYAN);
 575                                 scr_printf("%s ", message->recipient);
 576                         }
 577                 }
 578         }
 579
 580         if (dest) {
 581                 fprintf(dest, "\n");
 582         } else {
 583                 scr_printf("\n");
 584         }
 585
 586         /* Set the reply-to address to an Internet e-mail address if possible
 587          */
 588         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 589                 if (!IsEmptyStr(message->author)) {
 590                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 591                 }
 592                 else {
 593                         safestrncpy(reply_to, message->email, sizeof reply_to);
 594                 }
 595         }
 596
 597         /* But if we can't do that, set it to a Citadel address.
 598          */
 599         if (!strcmp(reply_to, NO_REPLY_TO)) {
 600                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 601                          message->author, message->node);
 602         }
 603
 604         if (message->msgid != NULL) {
 605                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 606         }
 607
 608         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 609                 safestrncpy(reply_references, message->references, sizeof reply_references);
 610         }
 611
 612         if (message->subject != NULL) {
 613                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 614                 if (!IsEmptyStr(message->subject)) {
 615                         if (dest) {
 616                                 fprintf(dest, "Subject: %s\n",
 617                                                         message->subject);
 618                         } else {
 619                                 color(DIM_WHITE);
 620                                 scr_printf("Subject: ");
 621                                 color(BRIGHT_CYAN);
 622                                 scr_printf("%s\n", message->subject);
 623                         }
 624                 }
 625         }
 626
 627         if (pagin == 1 && !dest) {
 628                 color(BRIGHT_WHITE);
 629         }
 630
 631         /******* end of header output, start of message text output *******/
 632
 633         /*
 634          * Convert HTML to plain text, formatting for the actual width
 635          * of the client screen.
 636          */
 637         if (!strcasecmp(message->content_type, "text/html")) {
 638                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 639                 if (converted_text != NULL) {
 640                         free(message->text);
 641                         message->text = converted_text;
 642                         format_type = 1;
 643                 }
 644         }
 645
 646         /* Text/plain is a different type */
 647         if (!strcasecmp(message->content_type, "text/plain")) {
 648                 format_type = 1;
 649         }
 650
 651         /* Extract URL's */
 652         num_urls = 0;   /* Start with a clean slate */
 653         searchptr = message->text;
 654         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 655                 searchptr = strstr(searchptr, "http://");
 656                 if (searchptr != NULL) {
 657                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 658                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 659                                 ch = urls[num_urls][i];
 660                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 661                                     ch == ' ' || ch == '\n') {
 662                                         urls[num_urls][i] = 0;
 663                                         break;
 664                                 }
 665                         }
 666                         num_urls++;
 667                         ++searchptr;
 668                 }
 669         }
 670
 671         /*
 672          * Here we go
 673          */
 674         if (format_type == 0) {
 675                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 676         } else {
 677                 /* renderer for text/plain */
 678
 679                 lineptr = message->text;
 680
 681                 do {
 682                         nextline = strchr(lineptr, '\n');
 683                         if (nextline != NULL) {
 684                                 *nextline = 0;
 685                                 ++nextline;
 686                                 if (*nextline == 0) nextline = NULL;
 687                         }
 688
 689                         if (sigcaught == 0) {
 690                                 linelen = strlen(lineptr);
 691                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 692                                         lineptr[--linelen] = 0;
 693                                 }
 694                                 if (dest) {
 695                                         fprintf(dest, "%s\n", lineptr);
 696                                 } else {
 697                                         scr_printf("%s\n", lineptr);
 698                                 }
 699                         }
 700                         if (lineptr[0] == 0) final_line_is_blank = 1;
 701                         else final_line_is_blank = 0;
 702                         lineptr = nextline;
 703                 } while (nextline);
 704                 fr = sigcaught;
 705         }
 706         if (!final_line_is_blank) {
 707                 if (dest) {
 708                         fprintf(dest, "\n");
 709                 }
 710                 else {
 711                         scr_printf("\n");
 712                         fr = sigcaught;
 713                 }
 714         }
 715
 716         /* Enumerate any attachments */
 717         if ( (pagin == 1) && (message->attachments) ) {
 718                 struct parts *ptr;
 719
 720                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 721                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 722                            || (!strcasecmp(ptr->disposition, "inline"))
 723                            || (!strcasecmp(ptr->disposition, ""))
 724                         ) {
 725                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 726                                    && (!IsEmptyStr(ptr->mimetype))
 727                                 ) {
 728                                         color(DIM_WHITE);
 729                                         scr_printf("Part ");
 730                                         color(BRIGHT_MAGENTA);
 731                                         scr_printf("%s", ptr->number);
 732                                         color(DIM_WHITE);
 733                                         scr_printf(": ");
 734                                         color(BRIGHT_CYAN);
 735                                         scr_printf("%s", ptr->filename);
 736                                         color(DIM_WHITE);
 737                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 738                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 739                                                 has_images++;
 740                                         }
 741                                 }
 742                         }
 743                 }
 744         }
 745
 746         /* Save the attachments info for later */
 747         last_message_parts = message->attachments;
 748
 749         /* Now we're done */
 750         free(message->text);
 751         free(message);
 752
 753         if (pagin == 1 && !dest)
 754                 color(DIM_WHITE);
 755         stty_ctdl(0);
 756         return (fr);
 757 }
 758
 759 /*
 760  * replace string function for the built-in editor
 761  */
 762 void replace_string(char *filename, long int startpos)
 763 {
 764         char buf[512];
 765         char srch_str[128];
 766         char rplc_str[128];
 767         FILE *fp;
 768         int a;
 769         long rpos, wpos;
 770         char *ptr;
 771         int substitutions = 0;
 772         long msglen = 0L;
 773         int rv;
 774
 775         scr_printf("Enter text to be replaced:\n: ");
 776         ctdl_getline(srch_str, (sizeof(srch_str)-1) );
 777         if (IsEmptyStr(srch_str)) {
 778                 return;
 779         }
 780
 781         scr_printf("Enter text to replace it with:\n: ");
 782         ctdl_getline(rplc_str, (sizeof(rplc_str)-1) );
 783
 784         fp = fopen(filename, "r+");
 785         if (fp == NULL) {
 786                 return;
 787         }
 788
 789         wpos = startpos;
 790         fseek(fp, startpos, 0);
 791         strcpy(buf, "");
 792         while (a = getc(fp), a > 0) {
 793                 ++msglen;
 794                 buf[strlen(buf) + 1] = 0;
 795                 buf[strlen(buf)] = a;
 796                 if (strlen(buf) >= strlen(srch_str)) {
 797                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 798                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 799                                 strcpy(ptr, rplc_str);
 800                                 ++substitutions;
 801                         }
 802                 }
 803                 if (strlen(buf) > 384) {
 804                         rpos = ftell(fp);
 805                         fseek(fp, wpos, 0);
 806                         rv = fwrite((char *) buf, 128, 1, fp);
 807                         if (rv < 0) {
 808                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 809                                 break; /*whoopsi! */
 810                         }
 811                         strcpy(buf, &buf[128]);
 812                         wpos = ftell(fp);
 813                         fseek(fp, rpos, 0);
 814                 }
 815         }
 816         fseek(fp, wpos, 0);
 817         if (!IsEmptyStr(buf)) {
 818                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 819         }
 820         wpos = ftell(fp);
 821         fclose(fp);
 822         rv = truncate(filename, wpos);
 823         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 824 }
 825
 826 /*
 827  * Function to begin composing a new message
 828  */
 829 int client_make_message(CtdlIPC *ipc,
 830                         char *filename,         /* temporary file name */
 831                         char *recipient,        /* NULL if it's not mail */
 832                         int is_anonymous,
 833                         int format_type,
 834                         int mode,
 835                         char *subject,          /* buffer to store subject line */
 836                         int subject_required
 837 ) {
 838         FILE *fp;
 839         int a, b, e_ex_code;
 840         long beg;
 841         char datestr[SIZ];
 842         char header[SIZ];
 843         char *editor_path = NULL;
 844         int cksum = 0;
 845
 846         if (mode >= 2)
 847         {
 848                 if ((mode-2) < MAX_EDITORS && !IsEmptyStr(editor_paths[mode-2]))
 849                 {
 850                         editor_path = editor_paths[mode-2];
 851                 } else if (!IsEmptyStr(editor_paths[0]))
 852                 {
 853                         editor_path = editor_paths[0];
 854                 } else {
 855                         scr_printf("*** No editor available; using built-in editor.\n");
 856                         mode = 0;
 857                 }
 858         }
 859
 860         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 861         header[0] = 0;
 862
 863         if (room_flags & QR_ANONONLY && !recipient) {
 864                 snprintf(header, sizeof header, " ****");
 865         }
 866         else {
 867                 snprintf(header, sizeof header,
 868                         " %s from %s",
 869                         datestr,
 870                         (is_anonymous ? "[anonymous]" : fullname)
 871                         );
 872                 if (!IsEmptyStr(recipient)) {
 873                         size_t tmp = strlen(header);
 874                         snprintf(&header[tmp], sizeof header - tmp,
 875                                 " to %s", recipient);
 876                 }
 877         }
 878         scr_printf("%s\n", header);
 879         if (subject != NULL) if (!IsEmptyStr(subject)) {
 880                 scr_printf("Subject: %s\n", subject);
 881         }
 882
 883         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 884                 newprompt("Subject: ", subject, 70);
 885         }
 886
 887         if (mode == 1) {
 888                 scr_printf("(Press ctrl-d when finished)\n");
 889         }
 890
 891         if (mode == 0) {
 892                 fp = fopen(filename, "r");
 893                 if (fp != NULL) {
 894                         fmout(screenwidth, fp, NULL, NULL, 0);
 895                         beg = ftell(fp);
 896                         if (beg < 0)
 897                                 scr_printf("failed to get stream position %s\n",
 898                                            strerror(errno));
 899                         fclose(fp);
 900                 } else {
 901                         fp = fopen(filename, "w");
 902                         if (fp == NULL) {
 903                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 904                                         filename, strerror(errno)
 905                                 );
 906                         return(1);
 907                         }
 908                         fclose(fp);
 909                 }
 910         }
 911
 912 ME1:    switch (mode) {
 913
 914         case 0:
 915                 fp = fopen(filename, "r+");
 916                 if (fp == NULL) {
 917                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 918                                 filename, strerror(errno)
 919                         );
 920                         return(1);
 921                 }
 922                 citedit(fp);
 923                 fclose(fp);
 924                 goto MECR;
 925
 926         case 1:
 927                 fp = fopen(filename, "a");
 928                 if (fp == NULL) {
 929                         scr_printf("*** Error opening temp file!\n"
 930                                 "    %s: %s\n",
 931                                 filename, strerror(errno));
 932                         return(1);
 933                 }
 934                 do {
 935                         a = inkey();
 936                         if (a == 255)
 937                                 a = 32;
 938                         if (a == 13)
 939                                 a = 10;
 940                         if (a != 4) {
 941                                 putc(a, fp);
 942                                 scr_putc(a);
 943                         }
 944                         if (a == 10)
 945                                 scr_putc(10);
 946                 } while (a != 4);
 947                 fclose(fp);
 948                 break;
 949
 950         case 2:
 951         default:        /* allow 2+ modes */
 952                 e_ex_code = 1;  /* start with a failed exit code */
 953                 stty_ctdl(SB_RESTORE);
 954                 editor_pid = fork();
 955                 cksum = file_checksum(filename);
 956                 if (editor_pid == 0) {
 957                         char tmp[SIZ];
 958
 959                         chmod(filename, 0600);
 960                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 961                         putenv(tmp);
 962                         execlp(editor_path, editor_path, filename, NULL);
 963                         exit(1);
 964                 }
 965                 if (editor_pid > 0)
 966                         do {
 967                                 e_ex_code = 0;
 968                                 b = ka_wait(&e_ex_code);
 969                         } while ((b != editor_pid) && (b >= 0));
 970                 editor_pid = (-1);
 971                 stty_ctdl(0);
 972                 break;
 973         }
 974
 975 MECR:   if (mode >= 2) {
 976                 if (file_checksum(filename) == cksum) {
 977                         scr_printf("*** Aborted message.\n");
 978                         e_ex_code = 1;
 979                 }
 980                 if (e_ex_code == 0) {
 981                         goto MEFIN;
 982                 }
 983                 goto MEABT2;
 984         }
 985
 986         b = keymenu("Entry command (? for options)",
 987                 "<A>bort|"
 988                 "<C>ontinue|"
 989                 "<S>ave message|"
 990                 "<P>rint formatted|"
 991                 "add s<U>bject|"
 992                 "<R>eplace string|"
 993                 "<H>old message"
 994         );
 995
 996         if (b == 'a') goto MEABT;
 997         if (b == 'c') goto ME1;
 998         if (b == 's') goto MEFIN;
 999         if (b == 'p') {
1000                 scr_printf(" %s from %s", datestr, fullname);
1001                 if (!IsEmptyStr(recipient)) {
1002                         scr_printf(" to %s", recipient);
1003                 }
1004                 scr_printf("\n");
1005                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1006                         scr_printf("Subject: %s\n", subject);
1007                 }
1008                 fp = fopen(filename, "r");
1009                 if (fp != NULL) {
1010                         fmout(screenwidth, fp, NULL, NULL, 0);
1011                         /* TODO: why ftell if we ignore the result? */
1012                         beg = ftell(fp);
1013                         if (beg < 0)
1014                                 scr_printf("failed to get stream position %s\n",
1015                                            strerror(errno));
1016                         fclose(fp);
1017                 }
1018                 goto MECR;
1019         }
1020         if (b == 'r') {
1021                 replace_string(filename, 0L);
1022                 goto MECR;
1023         }
1024         if (b == 'h') {
1025                 return (2);
1026         }
1027         if (b == 'u') {
1028                 if (subject != NULL) {
1029                         newprompt("Subject: ", subject, 70);
1030                 }
1031                 goto MECR;
1032         }
1033
1034 MEFIN:  return (0);
1035
1036 MEABT:  scr_printf("Are you sure? ");
1037         if (yesno() == 0) {
1038                 goto ME1;
1039         }
1040 MEABT2: unlink(filename);
1041         return (2);
1042 }
1043
1044
1045 /*
1046  * Make sure there's room in msg_arr[] for at least one more.
1047  */
1048 void check_msg_arr_size(void) {
1049         if ((num_msgs + 1) > msg_arr_size) {
1050                 msg_arr_size += 512;
1051                 msg_arr = realloc(msg_arr,
1052                         ((sizeof(long)) * msg_arr_size) );
1053         }
1054 }
1055
1056
1057 /*
1058  * break_big_lines()  -  break up lines that are >1024 characters
1059  *                       otherwise the server will truncate
1060  */
1061 void break_big_lines(char *msg) {
1062         char *ptr;
1063         char *break_here;
1064
1065         if (msg == NULL) {
1066                 return;
1067         }
1068
1069         ptr = msg;
1070         while (strlen(ptr) > 1000) {
1071                 break_here = strchr(&ptr[900], ' ');
1072                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1073                         break_here = &ptr[999];
1074                 }
1075                 *break_here = '\n';
1076                 ptr = break_here++;
1077         }
1078 }
1079
1080
1081 /*
1082  * entmsg()  -  edit and create a message
1083  *              returns 0 if message was saved
1084  */
1085 int entmsg(CtdlIPC *ipc,
1086                 int is_reply,   /* nonzero if this was a <R>eply command */
1087                 int c,          /* mode */
1088                 int masquerade  /* prompt for a non-default display name? */
1089 ) {
1090         char buf[SIZ];
1091         int a, b;
1092         int need_recp = 0;
1093         int mode;
1094         long highmsg = 0L;
1095         FILE *fp;
1096         char subject[SIZ];
1097         struct ctdlipcmessage message;
1098         unsigned long *msgarr = NULL;
1099         int r;                  /* IPC response code */
1100         int subject_required = 0;
1101
1102         if (!entmsg_ok) {
1103                 scr_printf("You may not enter messages in this type of room.\n");
1104                 return(1);
1105         }
1106
1107         if (c > 0) {
1108                 mode = 1;
1109         }
1110         else {
1111                 mode = 0;
1112         }
1113
1114         strcpy(subject, "");
1115
1116         /*
1117          * First, check to see if we have permission to enter a message in
1118          * this room.  The server will return an error code if we can't.
1119          */
1120         strcpy(message.recipient, "");
1121         strcpy(message.author, "");
1122         strcpy(message.subject, "");
1123         strcpy(message.references, "");
1124         message.text = "";              /* point to "", changes later */
1125         message.anonymous = 0;
1126         message.type = mode;
1127
1128         if (masquerade) {
1129                 newprompt("Display name for this message: ", message.author, 40);
1130         }
1131
1132         if (is_reply) {
1133
1134                 if (!IsEmptyStr(reply_subject)) {
1135                         if (!strncasecmp(reply_subject,
1136                            "Re: ", 3)) {
1137                                 strcpy(message.subject, reply_subject);
1138                         }
1139                         else {
1140                                 snprintf(message.subject,
1141                                         sizeof message.subject,
1142                                         "Re: %s",
1143                                         reply_subject);
1144                         }
1145                 }
1146
1147                 /* Trim down excessively long lists of thread references.  We eliminate the
1148                  * second one in the list so that the thread root remains intact.
1149                  */
1150                 int rrtok = num_tokens(reply_references, '|');
1151                 int rrlen = strlen(reply_references);
1152                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1153                         remove_token(reply_references, 1, '|');
1154                 }
1155
1156                 snprintf(message.references, sizeof message.references, "%s%s%s",
1157                         reply_references,
1158                         (IsEmptyStr(reply_references) ? "" : "|"),
1159                         reply_inreplyto
1160                 );
1161         }
1162
1163         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1164
1165         if (r / 100 != 2 && r / 10 != 57) {
1166                 scr_printf("%s\n", buf);
1167                 return (1);
1168         }
1169
1170         /* Error code 570 is special.  It means that we CAN enter a message
1171          * in this room, but a recipient needs to be specified.
1172          */
1173         need_recp = 0;
1174         if (r / 10 == 57) {
1175                 need_recp = 1;
1176         }
1177
1178         /* If the user is a dumbass, tell them how to type. */
1179         if ((userflags & US_EXPERT) == 0) {
1180                 formout(ipc, "entermsg");
1181         }
1182
1183         /* Handle the selection of a recipient, if necessary. */
1184         strcpy(buf, "");
1185         if (need_recp == 1) {
1186                 if (axlevel >= AxProbU) {
1187                         if (is_reply) {
1188                                 strcpy(buf, reply_to);
1189                         } else {
1190                                 scr_printf("Enter recipient: ");
1191                                 ctdl_getline(buf, (SIZ-100) );
1192                                 if (IsEmptyStr(buf))
1193                                         return (1);
1194                         }
1195                 } else
1196                         strcpy(buf, "sysop");
1197         }
1198         strcpy(message.recipient, buf);
1199
1200         if (room_flags & QR_ANONOPT) {
1201                 scr_printf("Anonymous (Y/N)? ");
1202                 if (yesno() == 1)
1203                         message.anonymous = 1;
1204         }
1205
1206         /* If it's mail, we've got to check the validity of the recipient... */
1207         if (!IsEmptyStr(message.recipient)) {
1208                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1209                 if (r / 100 != 2) {
1210                         scr_printf("%s\n", buf);
1211                         return (1);
1212                 }
1213         }
1214
1215         /* Learn the number of the newest message in in the room, so we can
1216          * tell upon saving whether someone else has posted too.
1217          */
1218         num_msgs = 0;
1219         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1220         if (r / 100 != 1) {
1221                 scr_printf("%s\n", buf);
1222         } else {
1223                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1224                         ;
1225         }
1226
1227         /* Now compose the message... */
1228         if (client_make_message(ipc, temp, message.recipient,
1229            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1230             if (msgarr) free(msgarr);
1231                 return (2);
1232         }
1233
1234         /* Reopen the temp file that was created, so we can send it */
1235         fp = fopen(temp, "r");
1236
1237         if (!fp || !(message.text = load_message_from_file(fp))) {
1238                 scr_printf("*** Internal error while trying to save message!\n"
1239                         "%s: %s\n",
1240                         temp, strerror(errno));
1241                 unlink(temp);
1242                 return(errno);
1243         }
1244
1245         if (fp) fclose(fp);
1246
1247         /* Break lines that are >1024 characters, otherwise the server
1248          * will truncate them.
1249          */
1250         break_big_lines(message.text);
1251
1252         /* Transmit message to the server */
1253         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1254         if (r / 100 != 4) {
1255                 scr_printf("%s\n", buf);
1256                 return (1);
1257         }
1258
1259         /* Yes, unlink it now, so it doesn't stick around if we crash */
1260         unlink(temp);
1261
1262         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1263
1264         if (msgarr) free(msgarr);
1265         msgarr = NULL;
1266         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1267         if (r / 100 != 1) {
1268                 scr_printf("%s\n", buf);
1269         } else {
1270                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1271                         ;
1272         }
1273
1274         /* get new highest message number in room to set lrp for goto... */
1275         maxmsgnum = msgarr[num_msgs - 1];
1276
1277         /* now see if anyone else has posted in here */
1278         b = (-1);
1279         for (a = 0; a < num_msgs; ++a) {
1280                 if (msgarr[a] > highmsg) {
1281                         ++b;
1282                 }
1283         }
1284         if (msgarr) free(msgarr);
1285         msgarr = NULL;
1286
1287         /* In the Mail> room, this algorithm always counts one message
1288          * higher than in public rooms, so we decrement it by one.
1289          */
1290         if (need_recp) {
1291                 --b;
1292         }
1293
1294         if (b == 1) {
1295                 scr_printf("*** 1 additional message has been entered "
1296                         "in this room by another user.\n");
1297         }
1298         else if (b > 1) {
1299                 scr_printf("*** %d additional messages have been entered "
1300                         "in this room by other users.\n", b);
1301         }
1302     free(message.text);
1303
1304         return(0);
1305 }
1306
1307 /*
1308  * Do editing on a quoted file
1309  */
1310 void process_quote(void)
1311 {
1312         FILE *qfile, *tfile;
1313         char buf[128];
1314         int line, qstart, qend;
1315
1316         /* Unlink the second temp file as soon as it's opened, so it'll get
1317          * deleted even if the program dies
1318          */
1319         qfile = fopen(temp2, "r");
1320         unlink(temp2);
1321
1322         /* Display the quotable text with line numbers added */
1323         line = 0;
1324         if (fgets(buf, 128, qfile) == NULL) {
1325                 /* we're skipping a line here */
1326         }
1327         while (fgets(buf, 128, qfile) != NULL) {
1328                 scr_printf("%3d %s", ++line, buf);
1329         }
1330         scr_printf("Begin quoting at [1] : ");
1331         ctdl_getline(buf, 4);
1332         qstart = (buf[0] == 0) ? (1) : atoi(buf);
1333         scr_printf("  End quoting at [%d] : ", line);
1334         ctdl_getline(buf, 4);
1335         qend = (buf[0] == 0) ? (line) : atoi(buf);
1336         rewind(qfile);
1337         line = 0;
1338         if (fgets(buf, 128, qfile) == NULL) {
1339                 /* we're skipping a line here */
1340         }
1341         tfile = fopen(temp, "w");
1342         while (fgets(buf, 128, qfile) != NULL) {
1343                 if ((++line >= qstart) && (line <= qend))
1344                         fprintf(tfile, " >%s", buf);
1345         }
1346         fprintf(tfile, " \n");
1347         fclose(qfile);
1348         fclose(tfile);
1349         chmod(temp, 0666);
1350 }
1351
1352
1353
1354 /*
1355  * List the URL's which were embedded in the previous message
1356  */
1357 void list_urls(CtdlIPC *ipc)
1358 {
1359         int i;
1360         char cmd[SIZ];
1361         int rv;
1362
1363         if (num_urls == 0) {
1364                 scr_printf("There were no URL's in the previous message.\n\n");
1365                 return;
1366         }
1367
1368         for (i = 0; i < num_urls; ++i) {
1369                 scr_printf("%3d %s\n", i + 1, urls[i]);
1370         }
1371
1372         if ((i = num_urls) != 1)
1373                 i = intprompt("Display which one", 1, 1, num_urls);
1374
1375         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1376         rv = system(cmd);
1377         if (rv != 0)
1378                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1379         scr_printf("\n");
1380 }
1381
1382
1383 /*
1384  * Run image viewer in background
1385  */
1386 int do_image_view(const char *filename)
1387 {
1388         char cmd[SIZ];
1389         pid_t childpid;
1390
1391         snprintf(cmd, sizeof cmd, imagecmd, filename);
1392         childpid = fork();
1393         if (childpid < 0) {
1394                 unlink(filename);
1395                 return childpid;
1396         }
1397
1398         if (childpid == 0) {
1399                 int retcode;
1400                 pid_t grandchildpid;
1401
1402                 grandchildpid = fork();
1403                 if (grandchildpid < 0) {
1404                         return grandchildpid;
1405                 }
1406
1407                 if (grandchildpid == 0) {
1408                         int nullfd;
1409                         int outfd = -1;
1410                         int errfd = -1;
1411
1412                         nullfd = open("/dev/null", O_WRONLY);
1413                         if (nullfd > -1) {
1414                                 dup2(1, outfd);
1415                                 dup2(2, errfd);
1416                                 dup2(nullfd, 1);
1417                                 dup2(nullfd, 2);
1418                         }
1419                         retcode = system(cmd);
1420                         if (nullfd > -1) {
1421                                 dup2(outfd, 1);
1422                                 dup2(errfd, 2);
1423                                 close(nullfd);
1424                         }
1425                         unlink(filename);
1426                         exit(retcode);
1427                 }
1428
1429                 if (grandchildpid > 0) {
1430                         exit(0);
1431                 }
1432         }
1433
1434         if (childpid > 0) {
1435                 int retcode;
1436
1437                 waitpid(childpid, &retcode, 0);
1438                 return retcode;
1439         }
1440
1441         return -1;
1442 }
1443
1444
1445 /*
1446  * View an image attached to a message
1447  */
1448 void image_view(CtdlIPC *ipc, unsigned long msg)
1449 {
1450         struct parts *ptr = last_message_parts;
1451         char part[SIZ];
1452         int found = 0;
1453
1454         /* Run through available parts */
1455         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1456                 if ((!strcasecmp(ptr->disposition, "attachment")
1457                    || !strcasecmp(ptr->disposition, "inline"))
1458                    && !strncmp(ptr->mimetype, "image/", 6)) {
1459                         found++;
1460                         if (found == 1) {
1461                                 strcpy(part, ptr->number);
1462                         }
1463                 }
1464         }
1465
1466         while (found > 0) {
1467                 if (found > 1)
1468                         strprompt("View which part (0 when done)", part, SIZ-1);
1469                 found = -found;
1470                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1471                         if ((!strcasecmp(ptr->disposition, "attachment")
1472                            || !strcasecmp(ptr->disposition, "inline"))
1473                            && !strncmp(ptr->mimetype, "image/", 6)
1474                            && !strcasecmp(ptr->number, part)) {
1475                                 char tmp[PATH_MAX];
1476                                 char buf[SIZ];
1477                                 void *file = NULL; /* The downloaded file */
1478                                 int r;
1479
1480                                 /* view image */
1481                                 found = -found;
1482                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1483                                 if (r / 100 != 2) {
1484                                         scr_printf("%s\n", buf);
1485                                 } else {
1486                                         size_t len;
1487
1488                                         len = (size_t)extract_long(buf, 0);
1489                                         progress(ipc, len, len);
1490                                         scr_flush();
1491                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1492                                         strcat(tmp, ptr->filename);
1493                                         save_buffer(file, len, tmp);
1494                                         free(file);
1495                                         do_image_view(tmp);
1496                                 }
1497                                 break;
1498                         }
1499                 }
1500                 if (found == 1)
1501                         break;
1502         }
1503 }
1504
1505
1506 /*
1507  * Read the messages in the current room
1508  */
1509 void readmsgs(CtdlIPC *ipc,
1510         enum MessageList c,             /* see listing in citadel_ipc.h */
1511         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1512         int q           /* Number of msgs to read (if c==3) */
1513 ) {
1514         int a, e, f, g, start;
1515         int savedpos;
1516         int hold_sw = 0;
1517         char arcflag = 0;
1518         char quotflag = 0;
1519         int hold_color = 0;
1520         char prtfile[PATH_MAX];
1521         char pagin;
1522         char cmd[SIZ];
1523         char targ[ROOMNAMELEN];
1524         char filename[PATH_MAX];
1525         char save_to[PATH_MAX];
1526         void *attachment = NULL;        /* Downloaded attachment */
1527         FILE *dest = NULL;              /* Alternate destination other than screen */
1528         int r;                          /* IPC response code */
1529         static int att_seq = 0;         /* Attachment download sequence number */
1530         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1531
1532         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1533
1534         if (msg_arr) {
1535                 free(msg_arr);
1536                 msg_arr = NULL;
1537         }
1538         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1539         if (r / 100 != 1) {
1540                 scr_printf("%s\n", cmd);
1541         } else {
1542                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1543                         ;
1544         }
1545
1546         if (num_msgs == 0) {    /* TODO look at this later */
1547                 if (c == LastMessages) return;
1548                 scr_printf("*** There are no ");
1549                 if (c == NewMessages) scr_printf("new ");
1550                 if (c == OldMessages) scr_printf("old ");
1551                 scr_printf("messages in this room.\n");
1552                 return;
1553         }
1554
1555         /* this loop cycles through each message... */
1556         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1557         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1558                 while (msg_arr[a] == 0L) {
1559                         a = a + rdir;
1560                         if ((a == num_msgs) || (a == (-1)))
1561                                 return;
1562                 }
1563
1564 RAGAIN:         pagin = ((arcflag == 0)
1565                          && (quotflag == 0)
1566                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1567
1568                 /* If we're doing a quote, set the screenwidth to 72 */
1569                 if (quotflag) {
1570                         hold_sw = screenwidth;
1571                         screenwidth = 72;
1572                 }
1573
1574                 /* If printing or archiving, set the screenwidth to 80 */
1575                 if (arcflag) {
1576                         hold_sw = screenwidth;
1577                         screenwidth = 80;
1578                 }
1579
1580                 /* clear parts list */
1581                 free_parts(last_message_parts);
1582                 last_message_parts = NULL;
1583
1584                 /* now read the message... */
1585                 e = read_message(ipc, msg_arr[a], pagin, dest);
1586
1587                 /* ...and set the screenwidth back if we have to */
1588                 if ((quotflag) || (arcflag)) {
1589                         screenwidth = hold_sw;
1590                 }
1591 RMSGREAD:
1592                 highest_msg_read = msg_arr[a];
1593                 if (quotflag) {
1594                         fclose(dest);
1595                         dest = NULL;
1596                         quotflag = 0;
1597                         enable_color = hold_color;
1598                         process_quote();
1599                         e = 'r';
1600                         goto DONE_QUOTING;
1601                 }
1602                 if (arcflag) {
1603                         fclose(dest);
1604                         dest = NULL;
1605                         arcflag = 0;
1606                         enable_color = hold_color;
1607                         f = fork();
1608                         if (f == 0) {
1609                                 if (freopen(prtfile, "r", stdin) == NULL) {
1610                                         /* we probably should handle the error condition here */
1611                                 }
1612                                 stty_ctdl(SB_RESTORE);
1613                                 ka_system(printcmd);
1614                                 stty_ctdl(SB_NO_INTR);
1615                                 unlink(prtfile);
1616                                 exit(0);
1617                         }
1618                         if (f > 0)
1619                                 do {
1620                                         g = wait(NULL);
1621                                 } while ((g != f) && (g >= 0));
1622                         scr_printf("Message printed.\n");
1623                 }
1624                 if (rc_alt_semantics && c == 1) {
1625                         char buf[SIZ];
1626
1627                         r = CtdlIPCSetMessageSeen(ipc, msg_arr[a], 1, buf);
1628                 }
1629                 if (e == SIGQUIT)
1630                         return;
1631                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1632                         && (((room_flags & QR_MAILBOX) == 0)
1633                         || (rc_force_mail_prompts == 0))) {
1634                         e = 'n';
1635                 } else {
1636                         color(DIM_WHITE);
1637                         scr_printf("(");
1638                         color(BRIGHT_WHITE);
1639                         scr_printf("%d", num_msgs - a - 1);
1640                         color(DIM_WHITE);
1641                         scr_printf(") ");
1642
1643                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1644                         if (rc_url_cmd[0] && num_urls)
1645                                 keyopt("<U>RLview ");
1646                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1647                                 keyopt("<I>mages ");
1648                         keyopt("<?>help -> ");
1649
1650                         do {
1651                                 e = (inkey() & 127);
1652                                 e = tolower(e);
1653 /* return key same as <N> */ if (e == 10)
1654                                         e = 'n';
1655 /* space key same as <N> */ if (e == 32)
1656                                         e = 'n';
1657 /* del/move for aides only */
1658                                     if (  (!is_room_aide)
1659                                        && ((room_flags & QR_MAILBOX) == 0)
1660                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1661                                        ) {
1662                                         if ((e == 'd') || (e == 'm'))
1663                                                 e = 0;
1664                                 }
1665 /* print only if available */
1666                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1667                                         e = 0;
1668 /* can't file if not allowed */
1669                                     if ((e == 'f')
1670                                         && (rc_allow_attachments == 0))
1671                                         e = 0;
1672 /* link only if browser avail*/
1673                                     if ((e == 'u')
1674                                         && (IsEmptyStr(rc_url_cmd)))
1675                                         e = 0;
1676                                 if ((e == 'i')
1677                                         && (IsEmptyStr(imagecmd) || !has_images))
1678                                         e = 0;
1679                         } while ((e != 'a') && (e != 'n') && (e != 's')
1680                                  && (e != 'd') && (e != 'm') && (e != 'p')
1681                                  && (e != 'q') && (e != 'b') && (e != 'h')
1682                                  && (e != 'r') && (e != 'f') && (e != '?')
1683                                  && (e != 'u') && (e != 'c') && (e != 'y')
1684                                  && (e != 'i') && (e != 'o') );
1685                         switch (e) {
1686                         case 's':
1687                                 scr_printf("Stop");
1688                                 break;
1689                         case 'a':
1690                                 scr_printf("Again");
1691                                 break;
1692                         case 'd':
1693                                 scr_printf("Delete");
1694                                 break;
1695                         case 'm':
1696                                 scr_printf("Move");
1697                                 break;
1698                         case 'c':
1699                                 scr_printf("Copy");
1700                                 break;
1701                         case 'n':
1702                                 scr_printf("Next");
1703                                 break;
1704                         case 'p':
1705                                 scr_printf("Print");
1706                                 break;
1707                         case 'q':
1708                                 scr_printf("reply Quoted");
1709                                 break;
1710                         case 'b':
1711                                 scr_printf("Back");
1712                                 break;
1713                         case 'h':
1714                                 scr_printf("Header");
1715                                 break;
1716                         case 'r':
1717                                 scr_printf("Reply");
1718                                 break;
1719                         case 'o':
1720                                 scr_printf("Open attachments");
1721                                 break;
1722                         case 'f':
1723                                 scr_printf("File");
1724                                 break;
1725                         case 'u':
1726                                 scr_printf("URL's");
1727                                 break;
1728                         case 'y':
1729                                 scr_printf("mY next");
1730                                 break;
1731                         case 'i':
1732                                 break;
1733                         case '?':
1734                                 scr_printf("? <help>");
1735                                 break;
1736                         }
1737                         if (userflags & US_DISAPPEAR || e == 'i')
1738                                 scr_printf("\r%79s\r", "");
1739                         else
1740                                 scr_printf("\n");
1741                 }
1742 DONE_QUOTING:   switch (e) {
1743                 case '?':
1744                         scr_printf("Options available here:\n"
1745                                 " ?  Help (prints this message)\n"
1746                                 " S  Stop reading immediately\n"
1747                                 " A  Again (repeats last message)\n"
1748                                 " N  Next (continue with next message)\n"
1749                                 " Y  My Next (continue with next message you authored)\n"
1750                                 " B  Back (go back to previous message)\n");
1751                         if (  (is_room_aide)
1752                            || (room_flags & QR_MAILBOX)
1753                            || (room_flags2 & QR2_COLLABDEL)
1754                         ) {
1755                                 scr_printf(" D  Delete this message\n"
1756                                         " M  Move message to another room\n");
1757                         }
1758                         scr_printf(" C  Copy message to another room\n");
1759                         if (!IsEmptyStr(printcmd))
1760                                 scr_printf(" P  Print this message\n");
1761                         scr_printf(
1762                                 " Q  Reply to this message, quoting portions of it\n"
1763                                 " H  Headers (display message headers only)\n");
1764                         if (is_mail)
1765                                 scr_printf(" R  Reply to this message\n");
1766                         if (rc_allow_attachments) {
1767                                 scr_printf(" O  (Open attachments)\n");
1768                                 scr_printf(" F  (save attachments to a File)\n");
1769                         }
1770                         if (!IsEmptyStr(rc_url_cmd))
1771                                 scr_printf(" U  (list URL's for display)\n");
1772                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1773                                 scr_printf(" I  Image viewer\n");
1774                         scr_printf("\n");
1775                         goto RMSGREAD;
1776                 case 'p':
1777                         scr_flush();
1778                         dest = fopen(prtfile, "w");
1779                         arcflag = 1;
1780                         hold_color = enable_color;
1781                         enable_color = 0;
1782                         goto RAGAIN;
1783                 case 'q':
1784                         scr_flush();
1785                         dest = fopen(temp2, "w");
1786                         quotflag = 1;
1787                         hold_color = enable_color;
1788                         enable_color = 0;
1789                         goto RAGAIN;
1790                 case 's':
1791                         return;
1792                 case 'a':
1793                         goto RAGAIN;
1794                 case 'b':
1795                         a = a - (rdir * 2);
1796                         break;
1797                 case 'm':
1798                 case 'c':
1799                         newprompt("Enter target room: ",
1800                                   targ, ROOMNAMELEN - 1);
1801                         if (!IsEmptyStr(targ)) {
1802                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1803                                                        msg_arr[a], targ, cmd);
1804                                 scr_printf("%s\n", cmd);
1805                                 if (r / 100 == 2)
1806                                         msg_arr[a] = 0L;
1807                         } else {
1808                                 goto RMSGREAD;
1809                         }
1810                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1811                                 goto RMSGREAD;  /* the logic here sucks */
1812                         break;
1813                 case 'o':
1814                 case 'f':
1815                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1816                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1817                                         filename, &attachment, progress, cmd);
1818                         if (r / 100 != 2) {
1819                                 scr_printf("%s\n", cmd);
1820                         } else {
1821                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1822                                 /*
1823                                  * Part 1 won't have a filename; use the
1824                                  * subject of the message instead. IO
1825                                  */
1826                                 if (IsEmptyStr(filename)) {
1827                                         strcpy(filename, reply_subject);
1828                                 }
1829                                 if (e == 'o') {         /* open attachment */
1830                                         mkdir(tempdir, 0700);
1831                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1832                                                 tempdir,
1833                                                 ++att_seq,
1834                                                 filename);
1835                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1836                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1837                                         rv = system(cmd);
1838                                         if (rv != 0)
1839                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1840                                 }
1841                                 else {                  /* save attachment to disk */
1842                                         destination_directory(save_to, filename);
1843                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1844                                 }
1845                         }
1846                         if (attachment) {
1847                                 free(attachment);
1848                                 attachment = NULL;
1849                         }
1850                         goto RMSGREAD;
1851                 case 'd':
1852                         scr_printf("*** Delete this message? ");
1853                         if (yesno() == 1) {
1854                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1855                                 scr_printf("%s\n", cmd);
1856                                 if (r / 100 == 2)
1857                                         msg_arr[a] = 0L;
1858                         } else {
1859                                 goto RMSGREAD;
1860                         }
1861                         break;
1862                 case 'h':
1863                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1864                         goto RMSGREAD;
1865                 case 'r':
1866                         savedpos = num_msgs;
1867                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1868                         num_msgs = savedpos;
1869                         goto RMSGREAD;
1870                 case 'u':
1871                         list_urls(ipc);
1872                         goto RMSGREAD;
1873                 case 'i':
1874                         image_view(ipc, msg_arr[a]);
1875                         goto RMSGREAD;
1876             case 'y':
1877           { /* hack hack hack */
1878             /* find the next message by me, stay here if we find nothing */
1879             int finda;
1880             int lasta = a;
1881             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1882               {
1883                 /* This is repetitively dumb, but that's what computers are for.
1884                    We have to load up messages until we find one by us */
1885                 char buf[SIZ];
1886                 int founda = 0;
1887                 struct ctdlipcmessage *msg = NULL;
1888
1889                 /* read the header so we can get 'from=' */
1890                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1891                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1892                         a = lasta; /* meesa current */
1893                         founda = 1;
1894                 }
1895
1896                 free(msg);
1897
1898                 if (founda)
1899                         break; /* for */
1900                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1901               } /* for */
1902           } /* case 'y' */
1903       } /* switch */
1904         }                       /* end for loop */
1905 }                               /* end read routine */
1906
1907
1908
1909
1910 /*
1911  * View and edit a system message
1912  */
1913 void edit_system_message(CtdlIPC *ipc, char *which_message)
1914 {
1915         char desc[SIZ];
1916         char read_cmd[SIZ];
1917         char write_cmd[SIZ];
1918
1919         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1920         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1921         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1922         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1923 }
1924
1925
1926
1927
1928 /*
1929  * Verify the message base
1930  */
1931 void check_message_base(CtdlIPC *ipc)
1932 {
1933         char buf[SIZ];
1934         char *transcript = NULL;
1935         int r;          /* IPC response code */
1936
1937         scr_printf
1938             ("Please read the documentation before running this command.\n"
1939             "Having done so, do you still want to check the message base? ");
1940         if (yesno() == 0)
1941                 return;
1942
1943         r = CtdlIPCMessageBaseCheck(ipc, &transcript, buf);
1944         if (r / 100 != 1) {
1945                 scr_printf("%s\n", buf);
1946                 return;
1947         }
1948
1949         while (transcript && !IsEmptyStr(transcript)) {
1950                 extract_token(buf, transcript, 0, '\n', sizeof buf);
1951                 remove_token(transcript, 0, '\n');
1952                 scr_printf("%s\n", buf);
1953         }
1954         if (transcript) free(transcript);
1955         return;
1956 }
1957
1958
1959 /*
1960  * Loads the contents of a file into memory.  Caller must free the allocated
1961  * memory.
1962  */
1963 char *load_message_from_file(FILE *src)
1964 {
1965         size_t i;
1966         size_t got = 0;
1967         char *dest = NULL;
1968
1969         fseek(src, 0, SEEK_END);
1970         i = ftell(src);
1971         rewind(src);
1972
1973         dest = (char *)calloc(1, i + 1);
1974         if (!dest)
1975                 return NULL;
1976
1977         while (got < i) {
1978                 size_t g;
1979
1980                 g = fread(dest + got, 1, i - got, src);
1981                 got += g;
1982                 if (g < i - got) {
1983                         /* Interrupted system call, keep going */
1984                         if (errno == EINTR)
1985                                 continue;
1986                         /* At this point we have either EOF or error */
1987                         i = got;
1988                         break;
1989                 }
1990                 dest[i] = 0;
1991         }
1992
1993         return dest;
1994 }