citadel/textclient/messages.c

   1 /*
   2  * $Id$
   3  *
   4  * Citadel message support routines
   5  * see COPYING for copyright information
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <sys/types.h>
  12 #include <fcntl.h>
  13 #include <stdio.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <signal.h>
  17 #include <errno.h>
  18 #include <limits.h>
  19 #include <sys/wait.h>
  20 #include <sys/stat.h>
  21
  22 #if TIME_WITH_SYS_TIME
  23 # include <sys/time.h>
  24 # include <time.h>
  25 #else
  26 # if HAVE_SYS_TIME_H
  27 #  include <sys/time.h>
  28 # else
  29 #  include <time.h>
  30 # endif
  31 #endif
  32
  33 #ifdef HAVE_PTHREAD_H
  34 #include <pthread.h>
  35 #endif
  36
  37 #include <stdarg.h>
  38 #include <libcitadel.h>
  39 #include "citadel.h"
  40 #include "citadel_ipc.h"
  41 #include "citadel_decls.h"
  42 #include "messages.h"
  43 #include "commands.h"
  44 #include "rooms.h"
  45 #ifndef HAVE_SNPRINTF
  46 #include "snprintf.h"
  47 #endif
  48 #include "screen.h"
  49
  50 #define MAXWORDBUF SIZ
  51 #define NO_REPLY_TO     "nobody ... xxxxxx"
  52
  53 char reply_to[SIZ];
  54 char reply_subject[SIZ];
  55 char reply_references[SIZ];
  56 char reply_inreplyto[SIZ];
  57
  58 struct cittext {
  59         struct cittext *next;
  60         char text[MAXWORDBUF];
  61 };
  62
  63 void stty_ctdl(int cmd);
  64 int haschar(const char *st, int ch);
  65 void ctdl_getline(char *string, int lim);
  66 int file_checksum(char *filename);
  67 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  68
  69 unsigned long *msg_arr = NULL;
  70 int msg_arr_size = 0;
  71 int num_msgs;
  72 char rc_alt_semantics;
  73 extern char room_name[];
  74 extern char tempdir[];
  75 extern unsigned room_flags;
  76 extern unsigned room_flags2;
  77 extern int entmsg_ok;
  78 extern long highest_msg_read;
  79 extern char temp[];
  80 extern char temp2[];
  81 extern int screenwidth;
  82 extern int screenheight;
  83 extern long maxmsgnum;
  84 extern char is_mail;
  85 extern char is_aide;
  86 extern char is_room_aide;
  87 extern char fullname[];
  88 extern char axlevel;
  89 extern unsigned userflags;
  90 extern char sigcaught;
  91 extern char printcmd[];
  92 extern int rc_allow_attachments;
  93 extern int rc_display_message_numbers;
  94 extern int rc_force_mail_prompts;
  95 extern int editor_pid;
  96 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  97 int num_urls = 0;
  98 char urls[MAXURLS][SIZ];
  99 char imagecmd[SIZ];
 100 int has_images = 0;                             /* Current msg has images */
 101 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 102
 103
 104
 105 void ka_sigcatch(int signum)
 106 {
 107         alarm(S_KEEPALIVE);
 108         signal(SIGALRM, ka_sigcatch);
 109         CtdlIPCNoop(ipc_for_signal_handlers);
 110 }
 111
 112
 113 /*
 114  * server keep-alive version of wait() (needed for external editor)
 115  */
 116 pid_t ka_wait(int *kstatus)
 117 {
 118         pid_t p;
 119
 120         alarm(S_KEEPALIVE);
 121         signal(SIGALRM, ka_sigcatch);
 122         do {
 123                 errno = 0;
 124                 p = wait(kstatus);
 125         } while (errno == EINTR);
 126         signal(SIGALRM, SIG_IGN);
 127         alarm(0);
 128         return (p);
 129 }
 130
 131
 132 /*
 133  * version of system() that uses ka_wait()
 134  */
 135 int ka_system(char *shc)
 136 {
 137         pid_t childpid;
 138         pid_t waitpid;
 139         int retcode;
 140
 141         childpid = fork();
 142         if (childpid < 0) {
 143                 color(BRIGHT_RED);
 144                 perror("Cannot fork");
 145                 color(DIM_WHITE);
 146                 return ((pid_t) childpid);
 147         }
 148
 149         if (childpid == 0) {
 150                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 151                 exit(127);
 152         }
 153
 154         if (childpid > 0) {
 155                 do {
 156                         waitpid = ka_wait(&retcode);
 157                 } while (waitpid != childpid);
 158                 return (retcode);
 159         }
 160
 161         return (-1);
 162 }
 163
 164
 165
 166 /*
 167  * add a newline to the buffer...
 168  */
 169 void add_newline(struct cittext *textlist)
 170 {
 171         struct cittext *ptr;
 172
 173         ptr = textlist;
 174         while (ptr->next != NULL)
 175                 ptr = ptr->next;
 176
 177         while (ptr->text[strlen(ptr->text) - 1] == 32)
 178                 ptr->text[strlen(ptr->text) - 1] = 0;
 179         /* strcat(ptr->text,"\n"); */
 180
 181         ptr->next = (struct cittext *)
 182             malloc(sizeof(struct cittext));
 183         ptr = ptr->next;
 184         ptr->next = NULL;
 185         strcpy(ptr->text, "");
 186 }
 187
 188
 189 /*
 190  * add a word to the buffer...
 191  */
 192 void add_word(struct cittext *textlist, char *wordbuf)
 193 {
 194         struct cittext *ptr;
 195
 196         ptr = textlist;
 197         while (ptr->next != NULL)
 198                 ptr = ptr->next;
 199
 200         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 201                 ptr->next = (struct cittext *)
 202                     malloc(sizeof(struct cittext));
 203                 ptr = ptr->next;
 204                 ptr->next = NULL;
 205                 strcpy(ptr->text, "");
 206         }
 207
 208         strcat(ptr->text, wordbuf);
 209         strcat(ptr->text, " ");
 210 }
 211
 212
 213 /*
 214  * begin editing of an opened file pointed to by fp
 215  */
 216 void citedit(CtdlIPC *ipc, FILE * fp)
 217 {
 218         int a, prev, finished, b, last_space;
 219         int appending = 0;
 220         struct cittext *textlist = NULL;
 221         struct cittext *ptr;
 222         char wordbuf[MAXWORDBUF];
 223         int rv = 0;
 224
 225         /* first, load the text into the buffer */
 226         fseek(fp, 0L, 0);
 227         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 228         textlist->next = NULL;
 229         strcpy(textlist->text, "");
 230
 231         strcpy(wordbuf, "");
 232         prev = (-1);
 233         while (a = getc(fp), a >= 0) {
 234                 appending = 1;
 235                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 236                         add_word(textlist, wordbuf);
 237                         strcpy(wordbuf, "");
 238                         if ((prev == 13) || (prev == 10)) {
 239                                 add_word(textlist, "\n");
 240                                 add_newline(textlist);
 241                                 add_word(textlist, "");
 242                         }
 243                 } else {
 244                         wordbuf[strlen(wordbuf) + 1] = 0;
 245                         wordbuf[strlen(wordbuf)] = a;
 246                 }
 247                 if (strlen(wordbuf) + 3 > screenwidth) {
 248                         add_word(textlist, wordbuf);
 249                         strcpy(wordbuf, "");
 250                 }
 251                 prev = a;
 252         }
 253
 254         /* get text */
 255         finished = 0;
 256         prev = (appending ? 13 : (-1));
 257         strcpy(wordbuf, "");
 258         async_ka_start();
 259         do {
 260                 a = inkey();
 261                 if (a == 10)
 262                         a = 13;
 263                 if (a == 9)
 264                         a = 32;
 265                 if (a == 127)
 266                         a = 8;
 267
 268                 if ((a != 32) && (prev == 13)) {
 269                         add_word(textlist, "\n");
 270                         scr_printf(" ");
 271                 }
 272
 273                 if ((a == 32) && (prev == 13)) {
 274                         add_word(textlist, "\n");
 275                         add_newline(textlist);
 276                 }
 277
 278                 if (a == 8) {
 279                         if (!IsEmptyStr(wordbuf)) {
 280                                 wordbuf[strlen(wordbuf) - 1] = 0;
 281                                 scr_putc(8);
 282                                 scr_putc(32);
 283                                 scr_putc(8);
 284                         }
 285                 } else if (a == 23) {
 286                         do {
 287                                 wordbuf[strlen(wordbuf) - 1] = 0;
 288                                 scr_putc(8);
 289                                 scr_putc(32);
 290                                 scr_putc(8);
 291                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 292                 } else if (a == 13) {
 293                         scr_printf("\n");
 294                         if (IsEmptyStr(wordbuf))
 295                                 finished = 1;
 296                         else {
 297                                 for (b = 0; b < strlen(wordbuf); ++b)
 298                                         if (wordbuf[b] == 32) {
 299                                                 wordbuf[b] = 0;
 300                                                 add_word(textlist,
 301                                                          wordbuf);
 302                                                 strcpy(wordbuf,
 303                                                        &wordbuf[b + 1]);
 304                                                 b = 0;
 305                                         }
 306                                 add_word(textlist, wordbuf);
 307                                 strcpy(wordbuf, "");
 308                         }
 309                 } else {
 310                         scr_putc(a);
 311                         wordbuf[strlen(wordbuf) + 1] = 0;
 312                         wordbuf[strlen(wordbuf)] = a;
 313                 }
 314                 if ((strlen(wordbuf) + 3) > screenwidth) {
 315                         last_space = (-1);
 316                         for (b = 0; b < strlen(wordbuf); ++b)
 317                                 if (wordbuf[b] == 32)
 318                                         last_space = b;
 319                         if (last_space >= 0) {
 320                                 for (b = 0; b < strlen(wordbuf); ++b)
 321                                         if (wordbuf[b] == 32) {
 322                                                 wordbuf[b] = 0;
 323                                                 add_word(textlist,
 324                                                          wordbuf);
 325                                                 strcpy(wordbuf,
 326                                                        &wordbuf[b + 1]);
 327                                                 b = 0;
 328                                         }
 329                                 for (b = 0; b < strlen(wordbuf); ++b) {
 330                                         scr_putc(8);
 331                                         scr_putc(32);
 332                                         scr_putc(8);
 333                                 }
 334                                 scr_printf("\n%s", wordbuf);
 335                         } else {
 336                                 add_word(textlist, wordbuf);
 337                                 strcpy(wordbuf, "");
 338                                 scr_printf("\n");
 339                         }
 340                 }
 341                 prev = a;
 342         } while (finished == 0);
 343         async_ka_end();
 344
 345         /* write the buffer back to disk */
 346         fseek(fp, 0L, 0);
 347         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 348                 fprintf(fp, "%s", ptr->text);
 349         }
 350         putc(10, fp);
 351         fflush(fp);
 352         rv = ftruncate(fileno(fp), ftell(fp));
 353
 354         /* and deallocate the memory we used */
 355         while (textlist != NULL) {
 356                 ptr = textlist->next;
 357                 free(textlist);
 358                 textlist = ptr;
 359         }
 360 }
 361
 362
 363 /*
 364  * Free the struct parts
 365  */
 366 void free_parts(struct parts *p)
 367 {
 368         struct parts *a_part = p;
 369
 370         while (a_part) {
 371                 struct parts *q;
 372
 373                 q = a_part;
 374                 a_part = a_part->next;
 375                 free(q);
 376         }
 377 }
 378
 379
 380 /*
 381  * Read a message from the server
 382  */
 383 int read_message(CtdlIPC *ipc,
 384         long num,   /* message number */
 385         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 386         FILE *dest) /* Destination file, NULL for screen */
 387 {
 388         char buf[SIZ];
 389         char now[SIZ];
 390         int format_type = 0;
 391         int fr = 0;
 392         int nhdr = 0;
 393         struct ctdlipcmessage *message = NULL;
 394         int r;                          /* IPC response code */
 395         char *converted_text = NULL;
 396         char *lineptr;
 397         char *nextline;
 398         char *searchptr;
 399         int i;
 400         char ch;
 401         int linelen;
 402         int final_line_is_blank = 0;
 403
 404         has_images = 0;
 405
 406         sigcaught = 0;
 407         stty_ctdl(1);
 408
 409         strcpy(reply_to, NO_REPLY_TO);
 410         strcpy(reply_subject, "");
 411         strcpy(reply_references, "");
 412         strcpy(reply_inreplyto, "");
 413
 414         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 415         if (r / 100 != 1) {
 416                 err_printf("*** msg #%ld: %d %s\n", num, r, buf);
 417                 ++lines_printed;
 418                 lines_printed = checkpagin(lines_printed, pagin, screenheight);
 419                 stty_ctdl(0);
 420                 free(message->text);
 421                 free_parts(message->attachments);
 422                 free(message);
 423                 return (0);
 424         }
 425
 426         if (dest) {
 427                 fprintf(dest, "\n ");
 428         } else {
 429                 scr_printf("\n");
 430                 ++lines_printed;
 431                 lines_printed = checkpagin(lines_printed, pagin, screenheight);
 432                 if (pagin != 2)
 433                         scr_printf(" ");
 434         }
 435         if (pagin == 1 && !dest) {
 436                 color(BRIGHT_CYAN);
 437         }
 438
 439         /* View headers only */
 440         if (pagin == 2) {
 441                 pprintf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 442                                 message->nhdr ? "yes" : "no",
 443                                 message->author, message->type,
 444                                 message->msgid);
 445                 if (!IsEmptyStr(message->subject)) {
 446                         pprintf("subj=%s\n", message->subject);
 447                 }
 448                 if (!IsEmptyStr(message->email)) {
 449                         pprintf("rfca=%s\n", message->email);
 450                 }
 451                 pprintf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 452                                 message->hnod, message->room,
 453                                 message->node,
 454                                 asctime(localtime(&message->time)));
 455                 if (!IsEmptyStr(message->recipient)) {
 456                         pprintf("rcpt=%s\n", message->recipient);
 457                 }
 458                 if (message->attachments) {
 459                         struct parts *ptr;
 460
 461                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 462                                 pprintf("part=%s|%s|%s|%s|%s|%ld\n",
 463                                         ptr->name, ptr->filename, ptr->number,
 464                                         ptr->disposition, ptr->mimetype,
 465                                         ptr->length);
 466                         }
 467                 }
 468                 pprintf("\n");
 469                 stty_ctdl(0);
 470                 free(message->text);
 471                 free_parts(message->attachments);
 472                 free(message);
 473                 return (0);
 474         }
 475
 476         if (rc_display_message_numbers) {
 477                 if (dest) {
 478                         fprintf(dest, "[#%s] ", message->msgid);
 479                 } else {
 480                         color(DIM_WHITE);
 481                         scr_printf("[");
 482                         color(BRIGHT_WHITE);
 483                         scr_printf("#%s", message->msgid);
 484                         color(DIM_WHITE);
 485                         scr_printf("] ");
 486                 }
 487         }
 488         if (nhdr == 1 && !is_room_aide) {
 489                 if (dest) {
 490                         fprintf(dest, " ****");
 491                 } else {
 492                         scr_printf(" ****");
 493                 }
 494         } else {
 495                 fmt_date(now, sizeof now, message->time, 0);
 496                 if (dest) {
 497                         fprintf(dest, "%s from %s ", now, message->author);
 498                         if (!IsEmptyStr(message->email)) {
 499                                 fprintf(dest, "<%s> ", message->email);
 500                         }
 501                 } else {
 502                         color(BRIGHT_CYAN);
 503                         scr_printf("%s ", now);
 504                         color(DIM_WHITE);
 505                         scr_printf("from ");
 506                         color(BRIGHT_CYAN);
 507                         scr_printf("%s ", message->author);
 508                         if (!IsEmptyStr(message->email)) {
 509                                 color(DIM_WHITE);
 510                                 scr_printf("<");
 511                                 color(BRIGHT_BLUE);
 512                                 scr_printf("%s", message->email);
 513                                         color(DIM_WHITE);
 514                                 scr_printf("> ");
 515                         }
 516                 }
 517                 if (!IsEmptyStr(message->node)) {
 518                         if ((room_flags & QR_NETWORK)
 519                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 520                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 521                                 if (IsEmptyStr(message->email)) {
 522                                         if (dest) {
 523                                                 fprintf(dest, "@%s ", message->node);
 524                                         } else {
 525                                                 color(DIM_WHITE);
 526                                                 scr_printf("@");
 527                                                 color(BRIGHT_YELLOW);
 528                                                 scr_printf("%s ", message->node);
 529                                         }
 530                                 }
 531                         }
 532                 }
 533                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 534                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 535                         if (dest) {
 536                                 fprintf(dest, "(%s) ", message->hnod);
 537                         } else {
 538                                 color(DIM_WHITE);
 539                                 scr_printf("(");
 540                                 color(BRIGHT_WHITE);
 541                                 scr_printf("%s", message->hnod);
 542                                 color(DIM_WHITE);
 543                                 scr_printf(") ");
 544                         }
 545                 }
 546                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 547                         if (dest) {
 548                                 fprintf(dest, "in %s> ", message->room);
 549                         } else {
 550                                 color(DIM_WHITE);
 551                                 scr_printf("in ");
 552                                 color(BRIGHT_MAGENTA);
 553                                 scr_printf("%s> ", message->room);
 554                         }
 555                 }
 556                 if (!IsEmptyStr(message->recipient)) {
 557                         if (dest) {
 558                                 fprintf(dest, "to %s ", message->recipient);
 559                         } else {
 560                                 color(DIM_WHITE);
 561                                 scr_printf("to ");
 562                                 color(BRIGHT_CYAN);
 563                                 scr_printf("%s ", message->recipient);
 564                         }
 565                 }
 566         }
 567
 568         if (dest) {
 569                 fprintf(dest, "\n");
 570         } else {
 571                 scr_printf("\n");
 572         }
 573
 574         /* Set the reply-to address to an Internet e-mail address if possible
 575          */
 576         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 577                 if (!IsEmptyStr(message->author)) {
 578                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 579                 }
 580                 else {
 581                         safestrncpy(reply_to, message->email, sizeof reply_to);
 582                 }
 583         }
 584
 585         /* But if we can't do that, set it to a Citadel address.
 586          */
 587         if (!strcmp(reply_to, NO_REPLY_TO)) {
 588                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 589                          message->author, message->node);
 590         }
 591
 592         if (!dest) {
 593                 ++lines_printed;
 594                 lines_printed = checkpagin(lines_printed, pagin, screenheight);
 595         }
 596
 597
 598         if (message->msgid != NULL) {
 599                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 600         }
 601
 602         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 603                 safestrncpy(reply_references, message->references, sizeof reply_references);
 604         }
 605
 606         if (message->subject != NULL) {
 607                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 608                 if (!IsEmptyStr(message->subject)) {
 609                         if (dest) {
 610                                 fprintf(dest, "Subject: %s\n",
 611                                                         message->subject);
 612                         } else {
 613                                 color(DIM_WHITE);
 614                                 scr_printf("Subject: ");
 615                                 color(BRIGHT_CYAN);
 616                                 scr_printf("%s\n", message->subject);
 617                                 ++lines_printed;
 618                                 lines_printed = checkpagin(lines_printed,
 619                                                 pagin, screenheight);
 620                         }
 621                 }
 622         }
 623
 624         if (pagin == 1 && !dest) {
 625                 color(BRIGHT_WHITE);
 626         }
 627
 628         /******* end of header output, start of message text output *******/
 629
 630         /*
 631          * Convert HTML to plain text, formatting for the actual width
 632          * of the client screen.
 633          */
 634         if (!strcasecmp(message->content_type, "text/html")) {
 635                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 636                 if (converted_text != NULL) {
 637                         free(message->text);
 638                         message->text = converted_text;
 639                         format_type = 1;
 640                 }
 641         }
 642
 643         /* Text/plain is a different type */
 644         if (!strcasecmp(message->content_type, "text/plain")) {
 645                 format_type = 1;
 646         }
 647
 648         /* Extract URL's */
 649         num_urls = 0;   /* Start with a clean slate */
 650         searchptr = message->text;
 651         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 652                 searchptr = strstr(searchptr, "http://");
 653                 if (searchptr != NULL) {
 654                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 655                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 656                                 ch = urls[num_urls][i];
 657                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 658                                     ch == ' ' || ch == '\n') {
 659                                         urls[num_urls][i] = 0;
 660                                         break;
 661                                 }
 662                         }
 663                         num_urls++;
 664                         ++searchptr;
 665                 }
 666         }
 667
 668         /*
 669          * Here we go
 670          */
 671         if (format_type == 0) {
 672                 fr = fmout(screenwidth, NULL, message->text, dest,
 673                            ((pagin == 1) ? 1 : 0), screenheight, (-1), 1);
 674         } else {
 675                 /* renderer for text/plain */
 676
 677                 lineptr = message->text;
 678
 679                 do {
 680                         nextline = strchr(lineptr, '\n');
 681                         if (nextline != NULL) {
 682                                 *nextline = 0;
 683                                 ++nextline;
 684                                 if (*nextline == 0) nextline = NULL;
 685                         }
 686
 687                         if (sigcaught == 0) {
 688                                 linelen = strlen(lineptr);
 689                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 690                                         lineptr[--linelen] = 0;
 691                                 }
 692                                 if (dest) {
 693                                         fprintf(dest, "%s\n", lineptr);
 694                                 } else {
 695                                         scr_printf("%s\n", lineptr);
 696                                         lines_printed = lines_printed + 1 +
 697                                             (linelen / screenwidth);
 698                                         lines_printed =
 699                                             checkpagin(lines_printed, pagin,
 700                                                        screenheight);
 701                                 }
 702                         }
 703                         if (lineptr[0] == 0) final_line_is_blank = 1;
 704                         else final_line_is_blank = 0;
 705                         lineptr = nextline;
 706                 } while (nextline);
 707                 fr = sigcaught;
 708         }
 709         if (!final_line_is_blank) {
 710                 if (dest) {
 711                         fprintf(dest, "\n");
 712                 }
 713                 else {
 714                         scr_printf("\n");
 715                         ++lines_printed;
 716                         lines_printed = checkpagin(lines_printed, pagin, screenheight);
 717                         fr = sigcaught;
 718                 }
 719         }
 720
 721         /* Enumerate any attachments */
 722         if ( (pagin == 1) && (message->attachments) ) {
 723                 struct parts *ptr;
 724
 725                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 726                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 727                            || (!strcasecmp(ptr->disposition, "inline"))
 728                            || (!strcasecmp(ptr->disposition, ""))
 729                         ) {
 730                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 731                                    && (!IsEmptyStr(ptr->mimetype))
 732                                 ) {
 733                                         color(DIM_WHITE);
 734                                         pprintf("Part ");
 735                                         color(BRIGHT_MAGENTA);
 736                                         pprintf("%s", ptr->number);
 737                                         color(DIM_WHITE);
 738                                         pprintf(": ");
 739                                         color(BRIGHT_CYAN);
 740                                         pprintf("%s", ptr->filename);
 741                                         color(DIM_WHITE);
 742                                         pprintf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 743                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 744                                                 has_images++;
 745                                         }
 746                                 }
 747                         }
 748                 }
 749         }
 750
 751         /* Save the attachments info for later */
 752         last_message_parts = message->attachments;
 753
 754         /* Now we're done */
 755         free(message->text);
 756         free(message);
 757
 758         if (pagin == 1 && !dest)
 759                 color(DIM_WHITE);
 760         stty_ctdl(0);
 761         return (fr);
 762 }
 763
 764 /*
 765  * replace string function for the built-in editor
 766  */
 767 void replace_string(char *filename, long int startpos)
 768 {
 769         char buf[512];
 770         char srch_str[128];
 771         char rplc_str[128];
 772         FILE *fp;
 773         int a;
 774         long rpos, wpos;
 775         char *ptr;
 776         int substitutions = 0;
 777         long msglen = 0L;
 778         int rv;
 779
 780         scr_printf("Enter text to be replaced:\n: ");
 781         ctdl_getline(srch_str, (sizeof(srch_str)-1) );
 782         if (IsEmptyStr(srch_str)) {
 783                 return;
 784         }
 785
 786         scr_printf("Enter text to replace it with:\n: ");
 787         ctdl_getline(rplc_str, (sizeof(rplc_str)-1) );
 788
 789         fp = fopen(filename, "r+");
 790         if (fp == NULL) {
 791                 return;
 792         }
 793
 794         wpos = startpos;
 795         fseek(fp, startpos, 0);
 796         strcpy(buf, "");
 797         while (a = getc(fp), a > 0) {
 798                 ++msglen;
 799                 buf[strlen(buf) + 1] = 0;
 800                 buf[strlen(buf)] = a;
 801                 if (strlen(buf) >= strlen(srch_str)) {
 802                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 803                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 804                                 strcpy(ptr, rplc_str);
 805                                 ++substitutions;
 806                         }
 807                 }
 808                 if (strlen(buf) > 384) {
 809                         rpos = ftell(fp);
 810                         fseek(fp, wpos, 0);
 811                         rv = fwrite((char *) buf, 128, 1, fp);
 812                         strcpy(buf, &buf[128]);
 813                         wpos = ftell(fp);
 814                         fseek(fp, rpos, 0);
 815                 }
 816         }
 817         fseek(fp, wpos, 0);
 818         if (!IsEmptyStr(buf)) {
 819                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 820         }
 821         wpos = ftell(fp);
 822         fclose(fp);
 823         rv = truncate(filename, wpos);
 824         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 825 }
 826
 827 /*
 828  * Function to begin composing a new message
 829  */
 830 int client_make_message(CtdlIPC *ipc,
 831                                                 char *filename,         /* temporary file name */
 832                                                 char *recipient,        /* NULL if it's not mail */
 833                                                 int is_anonymous,
 834                                                 int format_type,
 835                                                 int mode,
 836                                                 char *subject,          /* buffer to store subject line */
 837                                                 int subject_required)
 838 {
 839         FILE *fp;
 840         int a, b, e_ex_code;
 841         long beg;
 842         char datestr[SIZ];
 843         char header[SIZ];
 844         char *editor_path = NULL;
 845         int cksum = 0;
 846
 847         if (mode >= 2)
 848         {
 849                 if((mode-2) < MAX_EDITORS && !IsEmptyStr(editor_paths[mode-2])) {
 850                         editor_path = editor_paths[mode-2];
 851                 } else if (!IsEmptyStr(editor_paths[0])) {
 852                         editor_path = editor_paths[0];
 853                 } else {
 854                         err_printf("*** No editor available, "
 855                                 "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         beg = 0L;
 888
 889         if (mode == 1) {
 890                 scr_printf("(Press ctrl-d when finished)\n");
 891         }
 892
 893         if (mode == 0) {
 894                 fp = fopen(filename, "r");
 895                 if (fp != NULL) {
 896                         fmout(screenwidth, fp, NULL, NULL, 0,
 897                                 screenheight, 0, 0);
 898                         beg = ftell(fp);
 899                         fclose(fp);
 900                 } else {
 901                         fp = fopen(filename, "w");
 902                         if (fp == NULL) {
 903                                 err_printf("*** Error opening temp file!\n"
 904                                         "    %s: %s\n",
 905                                         filename, strerror(errno));
 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                         err_printf("*** Error opening temp file!\n"
 918                                 "    %s: %s\n",
 919                                 filename, strerror(errno));
 920                         return(1);
 921                 }
 922                 citedit(ipc, fp);
 923                 fclose(fp);
 924                 goto MECR;
 925
 926         case 1:
 927                 fp = fopen(filename, "a");
 928                 if (fp == NULL) {
 929                         err_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                 screen_reset();
 954                 stty_ctdl(SB_RESTORE);
 955                 editor_pid = fork();
 956                 cksum = file_checksum(filename);
 957                 if (editor_pid == 0) {
 958                         char tmp[SIZ];
 959
 960                         chmod(filename, 0600);
 961                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 962                         putenv(tmp);
 963                         execlp(editor_path, editor_path, filename, NULL);
 964                         exit(1);
 965                 }
 966                 if (editor_pid > 0)
 967                         do {
 968                                 e_ex_code = 0;
 969                                 b = ka_wait(&e_ex_code);
 970                         } while ((b != editor_pid) && (b >= 0));
 971                 editor_pid = (-1);
 972                 stty_ctdl(0);
 973                 screen_set();
 974                 break;
 975         }
 976
 977 MECR:   if (mode >= 2) {
 978                 if (file_checksum(filename) == cksum) {
 979                         err_printf("*** Aborted message.\n");
 980                         e_ex_code = 1;
 981                 }
 982                 if (e_ex_code == 0) {
 983                         goto MEFIN;
 984                 }
 985                 goto MEABT2;
 986         }
 987
 988         b = keymenu("Entry command (? for options)",
 989                     "<A>bort|<C>ontinue|<S>ave message|<P>rint formatted|"
 990                     "add s<U>bject|"
 991                     "<R>eplace string|<H>old message");
 992
 993         if (b == 'a') goto MEABT;
 994         if (b == 'c') goto ME1;
 995         if (b == 's') goto MEFIN;
 996         if (b == 'p') {
 997                 scr_printf(" %s from %s", datestr, fullname);
 998                 if (!IsEmptyStr(recipient)) {
 999                         scr_printf(" to %s", recipient);
1000                 }
1001                 scr_printf("\n");
1002                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1003                         scr_printf("Subject: %s\n", subject);
1004                 }
1005                 fp = fopen(filename, "r");
1006                 if (fp != NULL) {
1007                         fmout(screenwidth, fp, NULL, NULL,
1008                               ((userflags & US_PAGINATOR) ? 1 : 0),
1009                               screenheight, 0, 0);
1010                         beg = ftell(fp);
1011                         fclose(fp);
1012                 }
1013                 goto MECR;
1014         }
1015         if (b == 'r') {
1016                 replace_string(filename, 0L);
1017                 goto MECR;
1018         }
1019         if (b == 'h') {
1020                 return (2);
1021         }
1022         if (b == 'u') {
1023                 if (subject != NULL) {
1024                         newprompt("Subject: ", subject, 70);
1025                 }
1026                 goto MECR;
1027         }
1028
1029 MEFIN:  return (0);
1030
1031 MEABT:  scr_printf("Are you sure? ");
1032         if (yesno() == 0) {
1033                 goto ME1;
1034         }
1035 MEABT2: unlink(filename);
1036         return (2);
1037 }
1038
1039
1040 /*
1041  * Make sure there's room in msg_arr[] for at least one more.
1042  */
1043 void check_msg_arr_size(void) {
1044         if ((num_msgs + 1) > msg_arr_size) {
1045                 msg_arr_size += 512;
1046                 msg_arr = realloc(msg_arr,
1047                         ((sizeof(long)) * msg_arr_size) );
1048         }
1049 }
1050
1051
1052 /*
1053  * break_big_lines()  -  break up lines that are >1024 characters
1054  *                       otherwise the server will truncate
1055  */
1056 void break_big_lines(char *msg) {
1057         char *ptr;
1058         char *break_here;
1059
1060         if (msg == NULL) {
1061                 return;
1062         }
1063
1064         ptr = msg;
1065         while (strlen(ptr) > 1000) {
1066                 break_here = strchr(&ptr[900], ' ');
1067                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1068                         break_here = &ptr[999];
1069                 }
1070                 *break_here = '\n';
1071                 ptr = break_here++;
1072         }
1073 }
1074
1075
1076 /*
1077  * entmsg()  -  edit and create a message
1078  *              returns 0 if message was saved
1079  */
1080 int entmsg(CtdlIPC *ipc,
1081                 int is_reply,   /* nonzero if this was a <R>eply command */
1082                 int c,          /* mode */
1083                 int masquerade  /* prompt for a non-default display name? */
1084 ) {
1085         char buf[SIZ];
1086         int a, b;
1087         int need_recp = 0;
1088         int mode;
1089         long highmsg = 0L;
1090         FILE *fp;
1091         char subject[SIZ];
1092         struct ctdlipcmessage message;
1093         unsigned long *msgarr = NULL;
1094         int r;                  /* IPC response code */
1095         int subject_required = 0;
1096
1097         if (!entmsg_ok) {
1098                 scr_printf("You may not enter messages in this type of room.\n");
1099                 return(1);
1100         }
1101
1102         if (c > 0) {
1103                 mode = 1;
1104         }
1105         else {
1106                 mode = 0;
1107         }
1108
1109         strcpy(subject, "");
1110
1111         /*
1112          * First, check to see if we have permission to enter a message in
1113          * this room.  The server will return an error code if we can't.
1114          */
1115         strcpy(message.recipient, "");
1116         strcpy(message.author, "");
1117         strcpy(message.subject, "");
1118         strcpy(message.references, "");
1119         message.text = "";              /* point to "", changes later */
1120         message.anonymous = 0;
1121         message.type = mode;
1122
1123         if (masquerade) {
1124                 newprompt("Display name for this message: ", message.author, 40);
1125         }
1126
1127         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1128
1129         if (r / 100 != 2 && r / 10 != 57) {
1130                 scr_printf("%s\n", buf);
1131                 return (1);
1132         }
1133
1134         /* Error code 570 is special.  It means that we CAN enter a message
1135          * in this room, but a recipient needs to be specified.
1136          */
1137         need_recp = 0;
1138         if (r / 10 == 57) {
1139                 need_recp = 1;
1140         }
1141
1142         /* If the user is a dumbass, tell them how to type. */
1143         if ((userflags & US_EXPERT) == 0) {
1144                 formout(ipc, "entermsg");
1145         }
1146
1147         /* Handle the selection of a recipient, if necessary. */
1148         strcpy(buf, "");
1149         if (need_recp == 1) {
1150                 if (axlevel >= AxProbU) {
1151                         if (is_reply) {
1152                                 strcpy(buf, reply_to);
1153                         } else {
1154                                 scr_printf("Enter recipient: ");
1155                                 ctdl_getline(buf, (SIZ-100) );
1156                                 if (IsEmptyStr(buf))
1157                                         return (1);
1158                         }
1159                 } else
1160                         strcpy(buf, "sysop");
1161         }
1162         strcpy(message.recipient, buf);
1163
1164         if (is_reply) {
1165
1166                 if (!IsEmptyStr(reply_subject)) {
1167                         if (!strncasecmp(reply_subject,
1168                            "Re: ", 3)) {
1169                                 strcpy(message.subject, reply_subject);
1170                         }
1171                         else {
1172                                 snprintf(message.subject,
1173                                         sizeof message.subject,
1174                                         "Re: %s",
1175                                         reply_subject);
1176                         }
1177                 }
1178
1179                 /* Trim down excessively long lists of thread references.  We eliminate the
1180                  * second one in the list so that the thread root remains intact.
1181                  */
1182                 int rrtok = num_tokens(reply_references, '|');
1183                 int rrlen = strlen(reply_references);
1184                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1185                         remove_token(reply_references, 1, '|');
1186                 }
1187
1188                 snprintf(message.references, sizeof message.references, "%s%s%s",
1189                         reply_references,
1190                         (IsEmptyStr(reply_references) ? "" : "|"),
1191                         reply_inreplyto
1192                 );
1193         }
1194
1195         if (room_flags & QR_ANONOPT) {
1196                 scr_printf("Anonymous (Y/N)? ");
1197                 if (yesno() == 1)
1198                         message.anonymous = 1;
1199         }
1200
1201         /* If it's mail, we've got to check the validity of the recipient... */
1202         if (!IsEmptyStr(message.recipient)) {
1203                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1204                 if (r / 100 != 2) {
1205                         scr_printf("%s\n", buf);
1206                         return (1);
1207                 }
1208         }
1209
1210         /* Learn the number of the newest message in in the room, so we can
1211          * tell upon saving whether someone else has posted too.
1212          */
1213         num_msgs = 0;
1214         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1215         if (r / 100 != 1) {
1216                 scr_printf("%s\n", buf);
1217         } else {
1218                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1219                         ;
1220         }
1221
1222         /* Now compose the message... */
1223         if (client_make_message(ipc, temp, message.recipient,
1224            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1225             if (msgarr) free(msgarr);
1226                 return (2);
1227         }
1228
1229         /* Reopen the temp file that was created, so we can send it */
1230         fp = fopen(temp, "r");
1231
1232         if (!fp || !(message.text = load_message_from_file(fp))) {
1233                 err_printf("*** Internal error while trying to save message!\n"
1234                         "%s: %s\n",
1235                         temp, strerror(errno));
1236                 unlink(temp);
1237                 return(errno);
1238         }
1239
1240         if (fp) fclose(fp);
1241
1242         /* Break lines that are >1024 characters, otherwise the server
1243          * will truncate them.
1244          */
1245         break_big_lines(message.text);
1246
1247         /* Transmit message to the server */
1248         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1249         if (r / 100 != 4) {
1250                 scr_printf("%s\n", buf);
1251                 return (1);
1252         }
1253
1254         /* Yes, unlink it now, so it doesn't stick around if we crash */
1255         unlink(temp);
1256
1257         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1258
1259         if (msgarr) free(msgarr);
1260         msgarr = NULL;
1261         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1262         if (r / 100 != 1) {
1263                 scr_printf("%s\n", buf);
1264         } else {
1265                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1266                         ;
1267         }
1268
1269         /* get new highest message number in room to set lrp for goto... */
1270         maxmsgnum = msgarr[num_msgs - 1];
1271
1272         /* now see if anyone else has posted in here */
1273         b = (-1);
1274         for (a = 0; a < num_msgs; ++a) {
1275                 if (msgarr[a] > highmsg) {
1276                         ++b;
1277                 }
1278         }
1279         if (msgarr) free(msgarr);
1280         msgarr = NULL;
1281
1282         /* In the Mail> room, this algorithm always counts one message
1283          * higher than in public rooms, so we decrement it by one.
1284          */
1285         if (need_recp) {
1286                 --b;
1287         }
1288
1289         if (b == 1) {
1290                 scr_printf("*** 1 additional message has been entered "
1291                         "in this room by another user.\n");
1292         }
1293         else if (b > 1) {
1294                 scr_printf("*** %d additional messages have been entered "
1295                         "in this room by other users.\n", b);
1296         }
1297     free(message.text);
1298
1299         return(0);
1300 }
1301
1302 /*
1303  * Do editing on a quoted file
1304  */
1305 void process_quote(void)
1306 {
1307         FILE *qfile, *tfile;
1308         char buf[128];
1309         int line, qstart, qend;
1310
1311         /* Unlink the second temp file as soon as it's opened, so it'll get
1312          * deleted even if the program dies
1313          */
1314         qfile = fopen(temp2, "r");
1315         unlink(temp2);
1316
1317         /* Display the quotable text with line numbers added */
1318         line = 0;
1319         if (fgets(buf, 128, qfile) == NULL) {
1320                 /* we're skipping a line here */
1321         }
1322         while (fgets(buf, 128, qfile) != NULL) {
1323                 scr_printf("%3d %s", ++line, buf);
1324         }
1325         scr_printf("Begin quoting at [1] : ");
1326         ctdl_getline(buf, 4);
1327         qstart = (buf[0] == 0) ? (1) : atoi(buf);
1328         scr_printf("  End quoting at [%d] : ", line);
1329         ctdl_getline(buf, 4);
1330         qend = (buf[0] == 0) ? (line) : atoi(buf);
1331         rewind(qfile);
1332         line = 0;
1333         if (fgets(buf, 128, qfile) == NULL) {
1334                 /* we're skipping a line here */
1335         }
1336         tfile = fopen(temp, "w");
1337         while (fgets(buf, 128, qfile) != NULL) {
1338                 if ((++line >= qstart) && (line <= qend))
1339                         fprintf(tfile, " >%s", buf);
1340         }
1341         fprintf(tfile, " \n");
1342         fclose(qfile);
1343         fclose(tfile);
1344         chmod(temp, 0666);
1345 }
1346
1347
1348
1349 /*
1350  * List the URL's which were embedded in the previous message
1351  */
1352 void list_urls(CtdlIPC *ipc)
1353 {
1354         int i;
1355         char cmd[SIZ];
1356         int rv;
1357
1358         if (num_urls == 0) {
1359                 scr_printf("There were no URL's in the previous message.\n\n");
1360                 return;
1361         }
1362
1363         for (i = 0; i < num_urls; ++i) {
1364                 scr_printf("%3d %s\n", i + 1, urls[i]);
1365         }
1366
1367         if ((i = num_urls) != 1)
1368                 i = intprompt("Display which one", 1, 1, num_urls);
1369
1370         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1371         rv = system(cmd);
1372         scr_printf("\n");
1373 }
1374
1375
1376 /*
1377  * Run image viewer in background
1378  */
1379 int do_image_view(const char *filename)
1380 {
1381         char cmd[SIZ];
1382         pid_t childpid;
1383
1384         snprintf(cmd, sizeof cmd, imagecmd, filename);
1385         childpid = fork();
1386         if (childpid < 0) {
1387                 unlink(filename);
1388                 return childpid;
1389         }
1390
1391         if (childpid == 0) {
1392                 int retcode;
1393                 pid_t grandchildpid;
1394
1395                 grandchildpid = fork();
1396                 if (grandchildpid < 0) {
1397                         return grandchildpid;
1398                 }
1399
1400                 if (grandchildpid == 0) {
1401                         int nullfd;
1402                         int outfd = -1;
1403                         int errfd = -1;
1404
1405                         nullfd = open("/dev/null", O_WRONLY);
1406                         if (nullfd > -1) {
1407                                 dup2(1, outfd);
1408                                 dup2(2, errfd);
1409                                 dup2(nullfd, 1);
1410                                 dup2(nullfd, 2);
1411                         }
1412                         retcode = system(cmd);
1413                         if (nullfd > -1) {
1414                                 dup2(outfd, 1);
1415                                 dup2(errfd, 2);
1416                                 close(nullfd);
1417                         }
1418                         unlink(filename);
1419                         exit(retcode);
1420                 }
1421
1422                 if (grandchildpid > 0) {
1423                         exit(0);
1424                 }
1425         }
1426
1427         if (childpid > 0) {
1428                 int retcode;
1429
1430                 waitpid(childpid, &retcode, 0);
1431                 return retcode;
1432         }
1433
1434         return -1;
1435 }
1436
1437
1438 /*
1439  * View an image attached to a message
1440  */
1441 void image_view(CtdlIPC *ipc, unsigned long msg)
1442 {
1443         struct parts *ptr = last_message_parts;
1444         char part[SIZ];
1445         int found = 0;
1446
1447         /* Run through available parts */
1448         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1449                 if ((!strcasecmp(ptr->disposition, "attachment")
1450                    || !strcasecmp(ptr->disposition, "inline"))
1451                    && !strncmp(ptr->mimetype, "image/", 6)) {
1452                         found++;
1453                         if (found == 1) {
1454                                 strcpy(part, ptr->number);
1455                         }
1456                 }
1457         }
1458
1459         while (found > 0) {
1460                 if (found > 1)
1461                         strprompt("View which part (0 when done)", part, SIZ-1);
1462                 found = -found;
1463                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1464                         if ((!strcasecmp(ptr->disposition, "attachment")
1465                            || !strcasecmp(ptr->disposition, "inline"))
1466                            && !strncmp(ptr->mimetype, "image/", 6)
1467                            && !strcasecmp(ptr->number, part)) {
1468                                 char tmp[PATH_MAX];
1469                                 char buf[SIZ];
1470                                 void *file = NULL; /* The downloaded file */
1471                                 int r;
1472
1473                                 /* view image */
1474                                 found = -found;
1475                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1476                                 if (r / 100 != 2) {
1477                                         scr_printf("%s\n", buf);
1478                                 } else {
1479                                         size_t len;
1480
1481                                         len = (size_t)extract_long(buf, 0);
1482                                         progress(ipc, len, len);
1483                                         scr_flush();
1484                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1485                                         strcat(tmp, ptr->filename);
1486                                         save_buffer(file, len, tmp);
1487                                         free(file);
1488                                         do_image_view(tmp);
1489                                 }
1490                                 break;
1491                         }
1492                 }
1493                 if (found == 1)
1494                         break;
1495         }
1496 }
1497
1498
1499 /*
1500  * Read the messages in the current room
1501  */
1502 void readmsgs(CtdlIPC *ipc,
1503         enum MessageList c,             /* see listing in citadel_ipc.h */
1504         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1505         int q           /* Number of msgs to read (if c==3) */
1506 ) {
1507         int a, b, e, f, g, start;
1508         int savedpos;
1509         int hold_sw = 0;
1510         char arcflag = 0;
1511         char quotflag = 0;
1512         int hold_color = 0;
1513         char prtfile[PATH_MAX];
1514         char pagin;
1515         char cmd[SIZ];
1516         char targ[ROOMNAMELEN];
1517         char filename[PATH_MAX];
1518         char save_to[PATH_MAX];
1519         void *attachment = NULL;        /* Downloaded attachment */
1520         FILE *dest = NULL;              /* Alternate destination other than screen */
1521         int r;                          /* IPC response code */
1522         static int att_seq = 0;         /* Attachment download sequence number */
1523         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1524
1525         if (c < 0)
1526                 b = (num_msgs - 1);
1527         else
1528                 b = 0;
1529
1530         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1531
1532         if (msg_arr) {
1533                 free(msg_arr);
1534                 msg_arr = NULL;
1535         }
1536         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1537         if (r / 100 != 1) {
1538                 scr_printf("%s\n", cmd);
1539         } else {
1540                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1541                         ;
1542         }
1543
1544         if (num_msgs == 0) {    /* TODO look at this later */
1545                 if (c == LastMessages) return;
1546                 scr_printf("*** There are no ");
1547                 if (c == NewMessages) scr_printf("new ");
1548                 if (c == OldMessages) scr_printf("old ");
1549                 scr_printf("messages in this room.\n");
1550                 return;
1551         }
1552
1553         lines_printed = 0;
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:       scr_flush();
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                                 screen_reset();
1613                                 stty_ctdl(SB_RESTORE);
1614                                 ka_system(printcmd);
1615                                 stty_ctdl(SB_NO_INTR);
1616                                 screen_set();
1617                                 unlink(prtfile);
1618                                 exit(0);
1619                         }
1620                         if (f > 0)
1621                                 do {
1622                                         g = wait(NULL);
1623                                 } while ((g != f) && (g >= 0));
1624                         scr_printf("Message printed.\n");
1625                 }
1626                 if (rc_alt_semantics && c == 1) {
1627                         char buf[SIZ];
1628
1629                         r = CtdlIPCSetMessageSeen(ipc, msg_arr[a], 1, buf);
1630                 }
1631                 if (e == SIGQUIT)
1632                         return;
1633                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1634                         && (((room_flags & QR_MAILBOX) == 0)
1635                         || (rc_force_mail_prompts == 0))) {
1636                         e = 'n';
1637                 } else {
1638                         color(DIM_WHITE);
1639                         scr_printf("(");
1640                         color(BRIGHT_WHITE);
1641                         scr_printf("%d", num_msgs - a - 1);
1642                         color(DIM_WHITE);
1643                         scr_printf(") ");
1644
1645                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1646                         if (rc_url_cmd[0] && num_urls)
1647                                 keyopt("<U>RLview ");
1648                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1649                                 keyopt("<I>mages ");
1650                         keyopt("<?>help -> ");
1651
1652                         do {
1653                                 lines_printed = 2;
1654                                 e = (inkey() & 127);
1655                                 e = tolower(e);
1656 /* return key same as <N> */ if (e == 10)
1657                                         e = 'n';
1658 /* space key same as <N> */ if (e == 32)
1659                                         e = 'n';
1660 /* del/move for aides only */
1661                                     if (  (!is_room_aide)
1662                                        && ((room_flags & QR_MAILBOX) == 0)
1663                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1664                                        ) {
1665                                         if ((e == 'd') || (e == 'm'))
1666                                                 e = 0;
1667                                 }
1668 /* print only if available */
1669                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1670                                         e = 0;
1671 /* can't file if not allowed */
1672                                     if ((e == 'f')
1673                                         && (rc_allow_attachments == 0))
1674                                         e = 0;
1675 /* link only if browser avail*/
1676                                     if ((e == 'u')
1677                                         && (IsEmptyStr(rc_url_cmd)))
1678                                         e = 0;
1679                                 if ((e == 'i')
1680                                         && (IsEmptyStr(imagecmd) || !has_images))
1681                                         e = 0;
1682                         } while ((e != 'a') && (e != 'n') && (e != 's')
1683                                  && (e != 'd') && (e != 'm') && (e != 'p')
1684                                  && (e != 'q') && (e != 'b') && (e != 'h')
1685                                  && (e != 'r') && (e != 'f') && (e != '?')
1686                                  && (e != 'u') && (e != 'c') && (e != 'y')
1687                                  && (e != 'i') && (e != 'o') );
1688                         switch (e) {
1689                         case 's':
1690                                 scr_printf("Stop");
1691                                 break;
1692                         case 'a':
1693                                 scr_printf("Again");
1694                                 break;
1695                         case 'd':
1696                                 scr_printf("Delete");
1697                                 break;
1698                         case 'm':
1699                                 scr_printf("Move");
1700                                 break;
1701                         case 'c':
1702                                 scr_printf("Copy");
1703                                 break;
1704                         case 'n':
1705                                 scr_printf("Next");
1706                                 break;
1707                         case 'p':
1708                                 scr_printf("Print");
1709                                 break;
1710                         case 'q':
1711                                 scr_printf("reply Quoted");
1712                                 break;
1713                         case 'b':
1714                                 scr_printf("Back");
1715                                 break;
1716                         case 'h':
1717                                 scr_printf("Header");
1718                                 break;
1719                         case 'r':
1720                                 scr_printf("Reply");
1721                                 break;
1722                         case 'o':
1723                                 scr_printf("Open attachments");
1724                                 break;
1725                         case 'f':
1726                                 scr_printf("File");
1727                                 break;
1728                         case 'u':
1729                                 scr_printf("URL's");
1730                                 break;
1731                         case 'y':
1732                                 scr_printf("mY next");
1733                                 break;
1734                         case 'i':
1735                                 break;
1736                         case '?':
1737                                 scr_printf("? <help>");
1738                                 break;
1739                         }
1740                         if (userflags & US_DISAPPEAR || e == 'i')
1741                                 scr_printf("\r%79s\r", "");
1742                         else
1743                                 scr_printf("\n");
1744                         scr_flush();
1745                 }
1746 DONE_QUOTING:   switch (e) {
1747                 case '?':
1748                         scr_printf("Options available here:\n"
1749                                 " ?  Help (prints this message)\n"
1750                                 " S  Stop reading immediately\n"
1751                                 " A  Again (repeats last message)\n"
1752                                 " N  Next (continue with next message)\n"
1753                                 " Y  My Next (continue with next message you authored)\n"
1754                                 " B  Back (go back to previous message)\n");
1755                         if (  (is_room_aide)
1756                            || (room_flags & QR_MAILBOX)
1757                            || (room_flags2 & QR2_COLLABDEL)
1758                         ) {
1759                                 scr_printf(" D  Delete this message\n"
1760                                         " M  Move message to another room\n");
1761                         }
1762                         scr_printf(" C  Copy message to another room\n");
1763                         if (!IsEmptyStr(printcmd))
1764                                 scr_printf(" P  Print this message\n");
1765                         scr_printf(
1766                                 " Q  Reply to this message, quoting portions of it\n"
1767                                 " H  Headers (display message headers only)\n");
1768                         if (is_mail)
1769                                 scr_printf(" R  Reply to this message\n");
1770                         if (rc_allow_attachments) {
1771                                 scr_printf(" O  (Open attachments)\n");
1772                                 scr_printf(" F  (save attachments to a File)\n");
1773                         }
1774                         if (!IsEmptyStr(rc_url_cmd))
1775                                 scr_printf(" U  (list URL's for display)\n");
1776                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1777                                 scr_printf(" I  Image viewer\n");
1778                         scr_printf("\n");
1779                         goto RMSGREAD;
1780                 case 'p':
1781                         scr_flush();
1782                         dest = fopen(prtfile, "w");
1783                         arcflag = 1;
1784                         hold_color = enable_color;
1785                         enable_color = 0;
1786                         goto RAGAIN;
1787                 case 'q':
1788                         scr_flush();
1789                         dest = fopen(temp2, "w");
1790                         quotflag = 1;
1791                         hold_color = enable_color;
1792                         enable_color = 0;
1793                         goto RAGAIN;
1794                 case 's':
1795                         return;
1796                 case 'a':
1797                         goto RAGAIN;
1798                 case 'b':
1799                         a = a - (rdir * 2);
1800                         break;
1801                 case 'm':
1802                 case 'c':
1803                         newprompt("Enter target room: ",
1804                                   targ, ROOMNAMELEN - 1);
1805                         if (!IsEmptyStr(targ)) {
1806                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1807                                                        msg_arr[a], targ, cmd);
1808                                 scr_printf("%s\n", cmd);
1809                                 if (r / 100 == 2)
1810                                         msg_arr[a] = 0L;
1811                         } else {
1812                                 goto RMSGREAD;
1813                         }
1814                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1815                                 goto RMSGREAD;  /* the logic here sucks */
1816                         break;
1817                 case 'o':
1818                 case 'f':
1819                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1820                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1821                                         filename, &attachment, progress, cmd);
1822                         if (r / 100 != 2) {
1823                                 scr_printf("%s\n", cmd);
1824                         } else {
1825                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1826                                 /*
1827                                  * Part 1 won't have a filename; use the
1828                                  * subject of the message instead. IO
1829                                  */
1830                                 if (IsEmptyStr(filename)) {
1831                                         strcpy(filename, reply_subject);
1832                                 }
1833                                 if (e == 'o') {         /* open attachment */
1834                                         mkdir(tempdir, 0700);
1835                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1836                                                 tempdir,
1837                                                 ++att_seq,
1838                                                 filename);
1839                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1840                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1841                                         rv = system(cmd);
1842                                 }
1843                                 else {                  /* save attachment to disk */
1844                                         destination_directory(save_to, filename);
1845                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1846                                 }
1847                         }
1848                         if (attachment) {
1849                                 free(attachment);
1850                                 attachment = NULL;
1851                         }
1852                         goto RMSGREAD;
1853                 case 'd':
1854                         scr_printf("*** Delete this message? ");
1855                         if (yesno() == 1) {
1856                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1857                                 scr_printf("%s\n", cmd);
1858                                 if (r / 100 == 2)
1859                                         msg_arr[a] = 0L;
1860                         } else {
1861                                 goto RMSGREAD;
1862                         }
1863                         break;
1864                 case 'h':
1865                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1866                         goto RMSGREAD;
1867                 case 'r':
1868                         savedpos = num_msgs;
1869                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1870                         num_msgs = savedpos;
1871                         goto RMSGREAD;
1872                 case 'u':
1873                         list_urls(ipc);
1874                         goto RMSGREAD;
1875                 case 'i':
1876                         image_view(ipc, msg_arr[a]);
1877                         goto RMSGREAD;
1878             case 'y':
1879           { /* hack hack hack */
1880             /* find the next message by me, stay here if we find nothing */
1881             int finda;
1882             int lasta = a;
1883             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1884               {
1885                 /* This is repetitively dumb, but that's what computers are for.
1886                    We have to load up messages until we find one by us */
1887                 char buf[SIZ];
1888                 int founda = 0;
1889                 struct ctdlipcmessage *msg = NULL;
1890
1891                 /* read the header so we can get 'from=' */
1892                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1893                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1894                         a = lasta; /* meesa current */
1895                         founda = 1;
1896                 }
1897
1898                 free(msg);
1899
1900                 if (founda)
1901                         break; /* for */
1902                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1903               } /* for */
1904           } /* case 'y' */
1905       } /* switch */
1906         }                       /* end for loop */
1907 }                               /* end read routine */
1908
1909
1910
1911
1912 /*
1913  * View and edit a system message
1914  */
1915 void edit_system_message(CtdlIPC *ipc, char *which_message)
1916 {
1917         char desc[SIZ];
1918         char read_cmd[SIZ];
1919         char write_cmd[SIZ];
1920
1921         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1922         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1923         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1924         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1925 }
1926
1927
1928
1929
1930 /*
1931  * Verify the message base
1932  */
1933 void check_message_base(CtdlIPC *ipc)
1934 {
1935         char buf[SIZ];
1936         char *transcript = NULL;
1937         int r;          /* IPC response code */
1938
1939         scr_printf
1940             ("Please read the documentation before running this command.\n"
1941             "Having done so, do you still want to check the message base? ");
1942         if (yesno() == 0)
1943                 return;
1944
1945         r = CtdlIPCMessageBaseCheck(ipc, &transcript, buf);
1946         if (r / 100 != 1) {
1947                 scr_printf("%s\n", buf);
1948                 return;
1949         }
1950
1951         while (transcript && !IsEmptyStr(transcript)) {
1952                 lines_printed = 1;
1953                 extract_token(buf, transcript, 0, '\n', sizeof buf);
1954                 remove_token(transcript, 0, '\n');
1955                 pprintf("%s\n", buf);
1956         }
1957         if (transcript) free(transcript);
1958         return;
1959 }
1960
1961
1962 /*
1963  * Loads the contents of a file into memory.  Caller must free the allocated
1964  * memory.
1965  */
1966 char *load_message_from_file(FILE *src)
1967 {
1968         size_t i;
1969         size_t got = 0;
1970         char *dest = NULL;
1971
1972         fseek(src, 0, SEEK_END);
1973         i = ftell(src);
1974         rewind(src);
1975
1976         dest = (char *)calloc(1, i + 1);
1977         if (!dest)
1978                 return NULL;
1979
1980         while (got < i) {
1981                 size_t g;
1982
1983                 g = fread(dest + got, 1, i - got, src);
1984                 got += g;
1985                 if (g < i - got) {
1986                         /* Interrupted system call, keep going */
1987                         if (errno == EINTR)
1988                                 continue;
1989                         /* At this point we have either EOF or error */
1990                         i = got;
1991                         break;
1992                 }
1993                 dest[i] = 0;
1994         }
1995
1996         return dest;
1997 }