citadel/messages.c

   1 /*
   2  * $Id$
   3  *
   4  * Citadel message support routines
   5  * see copyright.txt 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 "citadel.h"
  39 #include "citadel_ipc.h"
  40 #include "citadel_decls.h"
  41 #include "messages.h"
  42 #include "commands.h"
  43 #include "rooms.h"
  44 #include "tools.h"
  45 #include "html.h"
  46 #ifndef HAVE_SNPRINTF
  47 #include "snprintf.h"
  48 #endif
  49 #include "screen.h"
  50
  51 #define MAXWORDBUF SIZ
  52 #define NO_REPLY_TO     "nobody ... xxxxxx"
  53
  54 char reply_to[SIZ];
  55 char reply_subject[SIZ];
  56
  57 struct cittext {
  58         struct cittext *next;
  59         char text[MAXWORDBUF];
  60 };
  61
  62 void stty_ctdl(int cmd);
  63 int haschar(const char *st, int ch);
  64 void getline(char *string, int lim);
  65 int file_checksum(char *filename);
  66 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  67
  68 unsigned long *msg_arr = NULL;
  69 int msg_arr_size = 0;
  70 int num_msgs;
  71 char rc_alt_semantics;
  72 extern char room_name[];
  73 extern unsigned room_flags;
  74 extern long highest_msg_read;
  75 extern char temp[];
  76 extern char temp2[];
  77 extern int screenwidth;
  78 extern int screenheight;
  79 extern long maxmsgnum;
  80 extern char is_mail;
  81 extern char is_aide;
  82 extern char is_room_aide;
  83 extern char fullname[];
  84 extern char axlevel;
  85 extern unsigned userflags;
  86 extern char sigcaught;
  87 extern char printcmd[];
  88 extern int rc_allow_attachments;
  89 extern int rc_display_message_numbers;
  90 extern int rc_force_mail_prompts;
  91 extern int editor_pid;
  92 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  93 int num_urls = 0;
  94 char urls[MAXURLS][SIZ];
  95 char imagecmd[SIZ];
  96 int has_images = 0;                             /* Current msg has images */
  97 struct parts *last_message_parts = NULL;        /* Parts from last msg */
  98
  99
 100
 101 void ka_sigcatch(int signum)
 102 {
 103         alarm(S_KEEPALIVE);
 104         signal(SIGALRM, ka_sigcatch);
 105         CtdlIPCNoop(ipc_for_signal_handlers);
 106 }
 107
 108
 109 /*
 110  * server keep-alive version of wait() (needed for external editor)
 111  */
 112 pid_t ka_wait(int *kstatus)
 113 {
 114         pid_t p;
 115
 116         alarm(S_KEEPALIVE);
 117         signal(SIGALRM, ka_sigcatch);
 118         do {
 119                 errno = 0;
 120                 p = wait(kstatus);
 121         } while (errno == EINTR);
 122         signal(SIGALRM, SIG_IGN);
 123         alarm(0);
 124         return (p);
 125 }
 126
 127
 128 /*
 129  * version of system() that uses ka_wait()
 130  */
 131 int ka_system(char *shc)
 132 {
 133         pid_t childpid;
 134         pid_t waitpid;
 135         int retcode;
 136
 137         childpid = fork();
 138         if (childpid < 0) {
 139                 color(BRIGHT_RED);
 140                 perror("Cannot fork");
 141                 color(DIM_WHITE);
 142                 return ((pid_t) childpid);
 143         }
 144
 145         if (childpid == 0) {
 146                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 147                 exit(127);
 148         }
 149
 150         if (childpid > 0) {
 151                 do {
 152                         waitpid = ka_wait(&retcode);
 153                 } while (waitpid != childpid);
 154                 return (retcode);
 155         }
 156
 157         return (-1);
 158 }
 159
 160
 161
 162 /*
 163  * add a newline to the buffer...
 164  */
 165 void add_newline(struct cittext *textlist)
 166 {
 167         struct cittext *ptr;
 168
 169         ptr = textlist;
 170         while (ptr->next != NULL)
 171                 ptr = ptr->next;
 172
 173         while (ptr->text[strlen(ptr->text) - 1] == 32)
 174                 ptr->text[strlen(ptr->text) - 1] = 0;
 175         /* strcat(ptr->text,"\n"); */
 176
 177         ptr->next = (struct cittext *)
 178             malloc(sizeof(struct cittext));
 179         ptr = ptr->next;
 180         ptr->next = NULL;
 181         strcpy(ptr->text, "");
 182 }
 183
 184
 185 /*
 186  * add a word to the buffer...
 187  */
 188 void add_word(struct cittext *textlist, char *wordbuf)
 189 {
 190         struct cittext *ptr;
 191
 192         ptr = textlist;
 193         while (ptr->next != NULL)
 194                 ptr = ptr->next;
 195
 196         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 197                 ptr->next = (struct cittext *)
 198                     malloc(sizeof(struct cittext));
 199                 ptr = ptr->next;
 200                 ptr->next = NULL;
 201                 strcpy(ptr->text, "");
 202         }
 203
 204         strcat(ptr->text, wordbuf);
 205         strcat(ptr->text, " ");
 206 }
 207
 208
 209 /*
 210  * begin editing of an opened file pointed to by fp
 211  */
 212 void citedit(CtdlIPC *ipc, FILE * fp)
 213 {
 214         int a, prev, finished, b, last_space;
 215         int appending = 0;
 216         struct cittext *textlist = NULL;
 217         struct cittext *ptr;
 218         char wordbuf[MAXWORDBUF];
 219
 220         /* first, load the text into the buffer */
 221         fseek(fp, 0L, 0);
 222         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 223         textlist->next = NULL;
 224         strcpy(textlist->text, "");
 225
 226         strcpy(wordbuf, "");
 227         prev = (-1);
 228         while (a = getc(fp), a >= 0) {
 229                 appending = 1;
 230                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 231                         add_word(textlist, wordbuf);
 232                         strcpy(wordbuf, "");
 233                         if ((prev == 13) || (prev == 10)) {
 234                                 add_word(textlist, "\n");
 235                                 add_newline(textlist);
 236                                 add_word(textlist, "");
 237                         }
 238                 } else {
 239                         wordbuf[strlen(wordbuf) + 1] = 0;
 240                         wordbuf[strlen(wordbuf)] = a;
 241                 }
 242                 if (strlen(wordbuf) + 3 > screenwidth) {
 243                         add_word(textlist, wordbuf);
 244                         strcpy(wordbuf, "");
 245                 }
 246                 prev = a;
 247         }
 248
 249         /* get text */
 250         finished = 0;
 251         prev = (appending ? 13 : (-1));
 252         strcpy(wordbuf, "");
 253         async_ka_start();
 254         do {
 255                 a = inkey();
 256                 if (a == 10)
 257                         a = 13;
 258                 if (a == 9)
 259                         a = 32;
 260                 if (a == 127)
 261                         a = 8;
 262
 263                 if ((a != 32) && (prev == 13)) {
 264                         add_word(textlist, "\n");
 265                         scr_printf(" ");
 266                 }
 267
 268                 if ((a == 32) && (prev == 13)) {
 269                         add_word(textlist, "\n");
 270                         add_newline(textlist);
 271                 }
 272
 273                 if (a == 8) {
 274                         if (strlen(wordbuf) > 0) {
 275                                 wordbuf[strlen(wordbuf) - 1] = 0;
 276                                 scr_putc(8);
 277                                 scr_putc(32);
 278                                 scr_putc(8);
 279                         }
 280                 } else if (a == 23) {
 281                         do {
 282                                 wordbuf[strlen(wordbuf) - 1] = 0;
 283                                 scr_putc(8);
 284                                 scr_putc(32);
 285                                 scr_putc(8);
 286                         } while (strlen(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 287                 } else if (a == 13) {
 288                         scr_printf("\n");
 289                         if (strlen(wordbuf) == 0)
 290                                 finished = 1;
 291                         else {
 292                                 for (b = 0; b < strlen(wordbuf); ++b)
 293                                         if (wordbuf[b] == 32) {
 294                                                 wordbuf[b] = 0;
 295                                                 add_word(textlist,
 296                                                          wordbuf);
 297                                                 strcpy(wordbuf,
 298                                                        &wordbuf[b + 1]);
 299                                                 b = 0;
 300                                         }
 301                                 add_word(textlist, wordbuf);
 302                                 strcpy(wordbuf, "");
 303                         }
 304                 } else {
 305                         scr_putc(a);
 306                         wordbuf[strlen(wordbuf) + 1] = 0;
 307                         wordbuf[strlen(wordbuf)] = a;
 308                 }
 309                 if ((strlen(wordbuf) + 3) > screenwidth) {
 310                         last_space = (-1);
 311                         for (b = 0; b < strlen(wordbuf); ++b)
 312                                 if (wordbuf[b] == 32)
 313                                         last_space = b;
 314                         if (last_space >= 0) {
 315                                 for (b = 0; b < strlen(wordbuf); ++b)
 316                                         if (wordbuf[b] == 32) {
 317                                                 wordbuf[b] = 0;
 318                                                 add_word(textlist,
 319                                                          wordbuf);
 320                                                 strcpy(wordbuf,
 321                                                        &wordbuf[b + 1]);
 322                                                 b = 0;
 323                                         }
 324                                 for (b = 0; b < strlen(wordbuf); ++b) {
 325                                         scr_putc(8);
 326                                         scr_putc(32);
 327                                         scr_putc(8);
 328                                 }
 329                                 scr_printf("\n%s", wordbuf);
 330                         } else {
 331                                 add_word(textlist, wordbuf);
 332                                 strcpy(wordbuf, "");
 333                                 scr_printf("\n");
 334                         }
 335                 }
 336                 prev = a;
 337         } while (finished == 0);
 338         async_ka_end();
 339
 340         /* write the buffer back to disk */
 341         fseek(fp, 0L, 0);
 342         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 343                 fprintf(fp, "%s", ptr->text);
 344         }
 345         putc(10, fp);
 346         fflush(fp);
 347         ftruncate(fileno(fp), ftell(fp));
 348
 349         /* and deallocate the memory we used */
 350         while (textlist != NULL) {
 351                 ptr = textlist->next;
 352                 free(textlist);
 353                 textlist = ptr;
 354         }
 355 }
 356
 357
 358 /*
 359  * Free the struct parts
 360  */
 361 void free_parts(struct parts *p)
 362 {
 363         struct parts *a_part = p;
 364
 365         while (a_part) {
 366                 struct parts *q;
 367
 368                 q = a_part;
 369                 a_part = a_part->next;
 370                 free(q);
 371         }
 372 }
 373
 374
 375 /*
 376  * Read a message from the server
 377  */
 378 int read_message(CtdlIPC *ipc,
 379         long num,   /* message number */
 380         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 381         FILE *dest) /* Destination file, NULL for screen */
 382 {
 383         char buf[SIZ];
 384         char now[SIZ];
 385         int format_type = 0;
 386         int fr = 0;
 387         int nhdr = 0;
 388         struct ctdlipcmessage *message = NULL;
 389         int r;                          /* IPC response code */
 390         char *converted_text = NULL;
 391         char *lineptr;
 392         char *nextline;
 393         char *searchptr;
 394         int i;
 395         char ch;
 396         int linelen;
 397         int final_line_is_blank = 0;
 398
 399         has_images = 0;
 400
 401         sigcaught = 0;
 402         stty_ctdl(1);
 403
 404         strcpy(reply_to, NO_REPLY_TO);
 405         strcpy(reply_subject, "");
 406
 407         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0),
 408                                 (can_do_msg4 ? 4 : 0),
 409                                 &message, buf);
 410         if (r / 100 != 1) {
 411                 err_printf("*** msg #%ld: %d %s\n", num, r, buf);
 412                 ++lines_printed;
 413                 lines_printed =
 414                     checkpagin(lines_printed, pagin, screenheight);
 415                 stty_ctdl(0);
 416                 return (0);
 417         }
 418
 419         if (dest) {
 420                 fprintf(dest, "\n ");
 421         } else {
 422                 scr_printf("\n");
 423                 ++lines_printed;
 424                 lines_printed = checkpagin(lines_printed, pagin, screenheight);
 425                 if (pagin != 2)
 426                         scr_printf(" ");
 427         }
 428         if (pagin == 1 && !dest) {
 429                 color(BRIGHT_CYAN);
 430         }
 431
 432         /* View headers only */
 433         if (pagin == 2) {
 434                 pprintf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 435                                 message->nhdr ? "yes" : "no",
 436                                 message->author, message->type,
 437                                 message->msgid);
 438                 if (strlen(message->subject)) {
 439                         pprintf("subj=%s\n", message->subject);
 440                 }
 441                 if (strlen(message->email)) {
 442                         pprintf("rfca=%s\n", message->email);
 443                 }
 444                 pprintf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 445                                 message->hnod, message->room,
 446                                 message->node,
 447                                 asctime(localtime(&message->time)));
 448                 if (strlen(message->recipient)) {
 449                         pprintf("rcpt=%s\n", message->recipient);
 450                 }
 451                 if (message->attachments) {
 452                         struct parts *ptr;
 453
 454                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 455                                 pprintf("part=%s|%s|%s|%s|%s|%ld\n",
 456                                         ptr->name, ptr->filename, ptr->number,
 457                                         ptr->disposition, ptr->mimetype,
 458                                         ptr->length);
 459                         }
 460                 }
 461                 pprintf("\n");
 462                 stty_ctdl(0);
 463                 return (0);
 464         }
 465
 466         if (rc_display_message_numbers) {
 467                 if (dest) {
 468                         fprintf(dest, "[#%s] ", message->msgid);
 469                 } else {
 470                         color(DIM_WHITE);
 471                         scr_printf("[");
 472                         color(BRIGHT_WHITE);
 473                         scr_printf("#%s", message->msgid);
 474                         color(DIM_WHITE);
 475                         scr_printf("] ");
 476                 }
 477         }
 478         if (nhdr == 1 && !is_room_aide) {
 479                 if (dest) {
 480                         fprintf(dest, " ****");
 481                 } else {
 482                         scr_printf(" ****");
 483                 }
 484         } else {
 485                 fmt_date(now, sizeof now, message->time, 0);
 486                 if (dest) {
 487                         fprintf(dest, "%s from %s ", now, message->author);
 488                         if (strlen(message->email)) {
 489                                 fprintf(dest, "<%s> ", message->email);
 490                         }
 491                 } else {
 492                         color(BRIGHT_CYAN);
 493                         scr_printf("%s ", now);
 494                         color(DIM_WHITE);
 495                         scr_printf("from ");
 496                         color(BRIGHT_CYAN);
 497                         scr_printf("%s ", message->author);
 498                         if (strlen(message->email)) {
 499                                 color(DIM_WHITE);
 500                                 scr_printf("<");
 501                                 color(BRIGHT_BLUE);
 502                                 scr_printf("%s", message->email);
 503                                         color(DIM_WHITE);
 504                                 scr_printf("> ");
 505                         }
 506                 }
 507                 if (strlen(message->node)) {
 508                         if ((room_flags & QR_NETWORK)
 509                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 510                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 511                                 if (strlen(message->email) == 0) {
 512                                         if (dest) {
 513                                                 fprintf(dest, "@%s ", message->node);
 514                                         } else {
 515                                                 color(DIM_WHITE);
 516                                                 scr_printf("@");
 517                                                 color(BRIGHT_YELLOW);
 518                                                 scr_printf("%s ", message->node);
 519                                         }
 520                                 }
 521                         }
 522                 }
 523                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 524                     && (strlen(message->hnod)) && (!strlen(message->email))) {
 525                         if (dest) {
 526                                 fprintf(dest, "(%s) ", message->hnod);
 527                         } else {
 528                                 color(DIM_WHITE);
 529                                 scr_printf("(");
 530                                 color(BRIGHT_WHITE);
 531                                 scr_printf("%s", message->hnod);
 532                                 color(DIM_WHITE);
 533                                 scr_printf(") ");
 534                         }
 535                 }
 536                 if (strcasecmp(message->room, room_name) && (strlen(message->email) == 0)) {
 537                         if (dest) {
 538                                 fprintf(dest, "in %s> ", message->room);
 539                         } else {
 540                                 color(DIM_WHITE);
 541                                 scr_printf("in ");
 542                                 color(BRIGHT_MAGENTA);
 543                                 scr_printf("%s> ", message->room);
 544                         }
 545                 }
 546                 if (strlen(message->recipient)) {
 547                         if (dest) {
 548                                 fprintf(dest, "to %s ", message->recipient);
 549                         } else {
 550                                 color(DIM_WHITE);
 551                                 scr_printf("to ");
 552                                 color(BRIGHT_CYAN);
 553                                 scr_printf("%s ", message->recipient);
 554                         }
 555                 }
 556         }
 557
 558         if (dest) {
 559                 fprintf(dest, "\n");
 560         } else {
 561                 scr_printf("\n");
 562         }
 563
 564         /* Set the reply-to address to an Internet e-mail address if possible
 565          */
 566         if (message->email != NULL) if (strlen(message->email) > 0) {
 567                 safestrncpy(reply_to, message->email, sizeof reply_to);
 568         }
 569
 570         /* But if we can't do that, set it to a Citadel address.
 571          */
 572         if (!strcmp(reply_to, NO_REPLY_TO)) {
 573                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 574                          message->author, message->node);
 575         }
 576
 577         if (!dest) {
 578                 ++lines_printed;
 579                 lines_printed = checkpagin(lines_printed, pagin, screenheight);
 580         }
 581
 582         if (message->subject != NULL) {
 583                 safestrncpy(reply_subject, message->subject,
 584                                                 sizeof reply_subject);
 585                 if (strlen(message->subject) > 0) {
 586                         if (dest) {
 587                                 fprintf(dest, "Subject: %s\n",
 588                                                         message->subject);
 589                         } else {
 590                                 color(DIM_WHITE);
 591                                 scr_printf("Subject: ");
 592                                 color(BRIGHT_CYAN);
 593                                 scr_printf("%s\n", message->subject);
 594                                 ++lines_printed;
 595                                 lines_printed = checkpagin(lines_printed,
 596                                                 pagin, screenheight);
 597                         }
 598                 }
 599         }
 600
 601         if (pagin == 1 && !dest) {
 602                 color(BRIGHT_WHITE);
 603         }
 604
 605         /******* end of header output, start of message text output *******/
 606
 607         /*
 608          * Convert HTML to plain text, formatting for the actual width
 609          * of the client screen.
 610          */
 611         if (!strcasecmp(message->content_type, "text/html")) {
 612                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 613                 if (converted_text != NULL) {
 614                         free(message->text);
 615                         message->text = converted_text;
 616                         format_type = 1;
 617                 }
 618         }
 619
 620         /* Text/plain is a different type */
 621         if (!strcasecmp(message->content_type, "text/plain")) {
 622                 format_type = 1;
 623         }
 624
 625         /* Extract URL's */
 626         num_urls = 0;   /* Start with a clean slate */
 627         searchptr = message->text;
 628         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 629                 searchptr = strstr(searchptr, "http://");
 630                 if (searchptr != NULL) {
 631                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 632                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 633                                 ch = urls[num_urls][i];
 634                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 635                                     ch == ' ' || ch == '\n') {
 636                                         urls[num_urls][i] = 0;
 637                                         break;
 638                                 }
 639                         }
 640                         num_urls++;
 641                         ++searchptr;
 642                 }
 643         }
 644
 645         /*
 646          * Here we go
 647          */
 648         if (format_type == 0) {
 649                 fr = fmout(screenwidth, NULL, message->text, dest,
 650                            ((pagin == 1) ? 1 : 0), screenheight, (-1), 1);
 651         } else {
 652                 /* renderer for text/plain */
 653
 654                 lineptr = message->text;
 655
 656                 do {
 657                         nextline = strchr(lineptr, '\n');
 658                         if (nextline != NULL) {
 659                                 *nextline = 0;
 660                                 ++nextline;
 661                                 if (*nextline == 0) nextline = NULL;
 662                         }
 663
 664                         if (sigcaught == 0) {
 665                                 linelen = strlen(lineptr);
 666                                 if (lineptr[linelen-1] == '\r') {
 667                                         lineptr[--linelen] = 0;
 668                                 }
 669                                 if (dest) {
 670                                         fprintf(dest, "%s\n", lineptr);
 671                                 } else {
 672                                         scr_printf("%s\n", lineptr);
 673                                         lines_printed = lines_printed + 1 +
 674                                             (linelen / screenwidth);
 675                                         lines_printed =
 676                                             checkpagin(lines_printed, pagin,
 677                                                        screenheight);
 678                                 }
 679                         }
 680                         if (lineptr[0] == 0) final_line_is_blank = 1;
 681                         else final_line_is_blank = 0;
 682                         lineptr = nextline;
 683                 } while (nextline);
 684                 fr = sigcaught;
 685         }
 686         if (!final_line_is_blank) {
 687                 if (dest) {
 688                         fprintf(dest, "\n");
 689                 }
 690                 else {
 691                         scr_printf("\n");
 692                         ++lines_printed;
 693                         lines_printed = checkpagin(lines_printed, pagin, screenheight);
 694                 }
 695         }
 696
 697         /* Enumerate any attachments */
 698         if ( (pagin == 1) && (can_do_msg4) && (message->attachments) ) {
 699                 struct parts *ptr;
 700
 701                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 702                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 703                            || (!strcasecmp(ptr->disposition, "inline"))) {
 704                                 color(DIM_WHITE);
 705                                 pprintf("Part ");
 706                                 color(BRIGHT_MAGENTA);
 707                                 pprintf("%s", ptr->number);
 708                                 color(DIM_WHITE);
 709                                 pprintf(": ");
 710                                 color(BRIGHT_CYAN);
 711                                 pprintf("%s", ptr->filename);
 712                                 color(DIM_WHITE);
 713                                 pprintf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 714                                 if (!strncmp(ptr->mimetype, "image/", 6))
 715                                         has_images++;
 716                         }
 717                 }
 718         }
 719
 720         /* Save the attachments info for later */
 721         last_message_parts = message->attachments;
 722
 723         /* Now we're done */
 724         free(message->text);
 725         free(message);
 726
 727         if (pagin == 1 && !dest)
 728                 color(DIM_WHITE);
 729         stty_ctdl(0);
 730         return (fr);
 731 }
 732
 733 /*
 734  * replace string function for the built-in editor
 735  */
 736 void replace_string(char *filename, long int startpos)
 737 {
 738         char buf[512];
 739         char srch_str[128];
 740         char rplc_str[128];
 741         FILE *fp;
 742         int a;
 743         long rpos, wpos;
 744         char *ptr;
 745         int substitutions = 0;
 746         long msglen = 0L;
 747
 748         scr_printf("Enter text to be replaced:\n: ");
 749         getline(srch_str, (sizeof(srch_str)-1) );
 750         if (strlen(srch_str) == 0)
 751                 return;
 752
 753         scr_printf("Enter text to replace it with:\n: ");
 754         getline(rplc_str, (sizeof(rplc_str)-1) );
 755
 756         fp = fopen(filename, "r+");
 757         if (fp == NULL)
 758                 return;
 759
 760         wpos = startpos;
 761         fseek(fp, startpos, 0);
 762         strcpy(buf, "");
 763         while (a = getc(fp), a > 0) {
 764                 ++msglen;
 765                 buf[strlen(buf) + 1] = 0;
 766                 buf[strlen(buf)] = a;
 767                 if (strlen(buf) >= strlen(srch_str)) {
 768                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 769                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 770                                 strcpy(ptr, rplc_str);
 771                                 ++substitutions;
 772                         }
 773                 }
 774                 if (strlen(buf) > 384) {
 775                         rpos = ftell(fp);
 776                         fseek(fp, wpos, 0);
 777                         fwrite((char *) buf, 128, 1, fp);
 778                         strcpy(buf, &buf[128]);
 779                         wpos = ftell(fp);
 780                         fseek(fp, rpos, 0);
 781                 }
 782         }
 783         fseek(fp, wpos, 0);
 784         if (strlen(buf) > 0)
 785                 fwrite((char *) buf, strlen(buf), 1, fp);
 786         wpos = ftell(fp);
 787         fclose(fp);
 788         truncate(filename, wpos);
 789         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 790 }
 791
 792 /*
 793  * Function to begin composing a new message
 794  */
 795 int client_make_message(CtdlIPC *ipc,
 796                 char *filename,         /* temporary file name */
 797                 char *recipient,        /* NULL if it's not mail */
 798                 int is_anonymous,
 799                 int format_type,
 800                 int mode,
 801                 char *subject)          /* buffer to store subject line */
 802 {
 803         FILE *fp;
 804         int a, b, e_ex_code;
 805         long beg;
 806         char datestr[SIZ];
 807         char header[SIZ];
 808         char *editor_path = NULL;
 809         int cksum = 0;
 810
 811         if (mode >= 2)
 812         {
 813                 if((mode-2) < MAX_EDITORS && strlen(editor_paths[mode-2]) > 0) {
 814                         editor_path = editor_paths[mode-2];
 815                 } else if (strlen(editor_paths[0]) > 0) {
 816                         editor_path = editor_paths[0];
 817                 } else {
 818                         err_printf("*** No editor available, "
 819                                 "using built-in editor\n");
 820                         mode = 0;
 821                 }
 822         }
 823
 824         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 825         header[0] = 0;
 826
 827         if (room_flags & QR_ANONONLY && !recipient) {
 828                 snprintf(header, sizeof header, " ****");
 829         }
 830         else {
 831                 snprintf(header, sizeof header,
 832                         " %s from %s",
 833                         datestr,
 834                         (is_anonymous ? "[anonymous]" : fullname)
 835                         );
 836                 if (strlen(recipient) > 0) {
 837                         size_t tmp = strlen(header);
 838                         snprintf(&header[tmp], sizeof header - tmp,
 839                                 " to %s", recipient);
 840                 }
 841         }
 842         scr_printf("%s\n", header);
 843         if (subject != NULL) if (strlen(subject) > 0) {
 844                 scr_printf("Subject: %s\n", subject);
 845         }
 846
 847         beg = 0L;
 848
 849         if (mode == 1) {
 850                 scr_printf("(Press ctrl-d when finished)\n");
 851         }
 852
 853         if (mode == 0) {
 854                 fp = fopen(filename, "r");
 855                 if (fp != NULL) {
 856                         fmout(screenwidth, fp, NULL, NULL, 0,
 857                                 screenheight, 0, 0);
 858                         beg = ftell(fp);
 859                         fclose(fp);
 860                 } else {
 861                         fp = fopen(filename, "w");
 862                         if (fp == NULL) {
 863                                 err_printf("*** Error opening temp file!\n"
 864                                         "    %s: %s\n",
 865                                         filename, strerror(errno));
 866                         return(1);
 867                         }
 868                         fclose(fp);
 869                 }
 870         }
 871
 872 ME1:    switch (mode) {
 873
 874         case 0:
 875                 fp = fopen(filename, "r+");
 876                 if (fp == NULL) {
 877                         err_printf("*** Error opening temp file!\n"
 878                                 "    %s: %s\n",
 879                                 filename, strerror(errno));
 880                         return(1);
 881                 }
 882                 citedit(ipc, fp);
 883                 fclose(fp);
 884                 goto MECR;
 885
 886         case 1:
 887                 fp = fopen(filename, "a");
 888                 if (fp == NULL) {
 889                         err_printf("*** Error opening temp file!\n"
 890                                 "    %s: %s\n",
 891                                 filename, strerror(errno));
 892                         return(1);
 893                 }
 894                 do {
 895                         a = inkey();
 896                         if (a == 255)
 897                                 a = 32;
 898                         if (a == 13)
 899                                 a = 10;
 900                         if (a != 4) {
 901                                 putc(a, fp);
 902                                 scr_putc(a);
 903                         }
 904                         if (a == 10)
 905                                 scr_putc(10);
 906                 } while (a != 4);
 907                 fclose(fp);
 908                 break;
 909
 910         case 2:
 911         default:        /* allow 2+ modes */
 912                 e_ex_code = 1;  /* start with a failed exit code */
 913                 screen_reset();
 914                 stty_ctdl(SB_RESTORE);
 915                 editor_pid = fork();
 916                 cksum = file_checksum(filename);
 917                 if (editor_pid == 0) {
 918                         char tmp[SIZ];
 919
 920                         chmod(filename, 0600);
 921                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 922                         putenv(tmp);
 923                         execlp(editor_path, editor_path, filename, NULL);
 924                         exit(1);
 925                 }
 926                 if (editor_pid > 0)
 927                         do {
 928                                 e_ex_code = 0;
 929                                 b = ka_wait(&e_ex_code);
 930                         } while ((b != editor_pid) && (b >= 0));
 931                 editor_pid = (-1);
 932                 stty_ctdl(0);
 933                 screen_set();
 934                 break;
 935         }
 936
 937 MECR:   if (mode >= 2) {
 938                 if (file_checksum(filename) == cksum) {
 939                         err_printf("*** Aborted message.\n");
 940                         e_ex_code = 1;
 941                 }
 942                 if (e_ex_code == 0) {
 943                         goto MEFIN;
 944                 }
 945                 goto MEABT2;
 946         }
 947
 948         b = keymenu("Entry command (? for options)",
 949                     "<A>bort|<C>ontinue|<S>ave message|<P>rint formatted|"
 950                     "add s<U>bject|"
 951                     "<R>eplace string|<H>old message");
 952
 953         if (b == 'a') goto MEABT;
 954         if (b == 'c') goto ME1;
 955         if (b == 's') goto MEFIN;
 956         if (b == 'p') {
 957                 scr_printf(" %s from %s", datestr, fullname);
 958                 if (strlen(recipient) > 0) {
 959                         scr_printf(" to %s", recipient);
 960                 }
 961                 scr_printf("\n");
 962                 if (subject != NULL) if (strlen(subject) > 0) {
 963                         scr_printf("Subject: %s\n", subject);
 964                 }
 965                 fp = fopen(filename, "r");
 966                 if (fp != NULL) {
 967                         fmout(screenwidth, fp, NULL, NULL,
 968                               ((userflags & US_PAGINATOR) ? 1 : 0),
 969                               screenheight, 0, 0);
 970                         beg = ftell(fp);
 971                         fclose(fp);
 972                 }
 973                 goto MECR;
 974         }
 975         if (b == 'r') {
 976                 replace_string(filename, 0L);
 977                 goto MECR;
 978         }
 979         if (b == 'h') {
 980                 return (2);
 981         }
 982         if (b == 'u') {
 983                 if (subject != NULL) {
 984                         newprompt("Subject: ", subject, 70);
 985                 }
 986                 goto MECR;
 987         }
 988
 989 MEFIN:  return (0);
 990
 991 MEABT:  scr_printf("Are you sure? ");
 992         if (yesno() == 0) {
 993                 goto ME1;
 994         }
 995 MEABT2: unlink(filename);
 996         return (2);
 997 }
 998
 999
1000 #if 0
1001 /*
1002  * Transmit message text to the server.
1003  *
1004  * This loop also implements a "tick" counter that displays the progress, if
1005  * we're sending something that will take a long time to transmit.
1006  */
1007 void transmit_message(CtdlIPC *ipc, FILE *fp)
1008 {
1009         char buf[SIZ];
1010         int ch, a;
1011         long msglen;
1012         time_t lasttick;
1013
1014         fseek(fp, 0L, SEEK_END);
1015         msglen = ftell(fp);
1016         rewind(fp);
1017         lasttick = time(NULL);
1018         strcpy(buf, "");
1019         while (ch = getc(fp), (ch >= 0)) {
1020                 if (ch == 10) {
1021                         if (!strcmp(buf, "000"))
1022                                 strcpy(buf, ">000");
1023                         CtdlIPC_putline(ipc, buf);
1024                         strcpy(buf, "");
1025                 } else {
1026                         a = strlen(buf);
1027                         buf[a + 1] = 0;
1028                         buf[a] = ch;
1029                         if ((ch == 32) && (strlen(buf) > 200)) {
1030                                 buf[a] = 0;
1031                                 if (!strcmp(buf, "000"))
1032                                         strcpy(buf, ">000");
1033                                 CtdlIPC_putline(ipc, buf);
1034                                 strcpy(buf, "");
1035                         }
1036                         if (strlen(buf) > 250) {
1037                                 if (!strcmp(buf, "000"))
1038                                         strcpy(buf, ">000");
1039                                 CtdlIPC_putline(ipc, buf);
1040                                 strcpy(buf, "");
1041                         }
1042                 }
1043
1044                 if ((time(NULL) - lasttick) > 2L) {
1045                         scr_printf(" %3ld%% completed\r",
1046                                ((ftell(fp) * 100L) / msglen));
1047                         scr_flush();
1048                         lasttick = time(NULL);
1049                 }
1050
1051         }
1052         CtdlIPC_putline(ipc, buf);
1053         scr_printf("                \r");
1054         scr_flush();
1055 }
1056 #endif
1057
1058
1059 /*
1060  * Make sure there's room in msg_arr[] for at least one more.
1061  */
1062 void check_msg_arr_size(void) {
1063         if ((num_msgs + 1) > msg_arr_size) {
1064                 msg_arr_size += 512;
1065                 msg_arr = realloc(msg_arr,
1066                         ((sizeof(long)) * msg_arr_size) );
1067         }
1068 }
1069
1070
1071 /*
1072  * break_big_lines()  -  break up lines that are >1024 characters
1073  *                       otherwise the server will truncate
1074  */
1075 void break_big_lines(char *msg) {
1076         char *ptr;
1077         char *break_here;
1078
1079         if (msg == NULL) {
1080                 return;
1081         }
1082
1083         ptr = msg;
1084         while (strlen(ptr) > 1000) {
1085                 break_here = strchr(&ptr[900], ' ');
1086                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1087                         break_here = &ptr[999];
1088                 }
1089                 *break_here = '\n';
1090                 ptr = break_here++;
1091         }
1092 }
1093
1094
1095 /*
1096  * entmsg()  -  edit and create a message
1097  *              returns 0 if message was saved
1098  */
1099 int entmsg(CtdlIPC *ipc,
1100                 int is_reply,   /* nonzero if this was a <R>eply command */
1101                 int c)          /* mode */
1102 {
1103         char buf[SIZ];
1104         int a, b;
1105         int need_recp = 0;
1106         int mode;
1107         long highmsg = 0L;
1108         FILE *fp;
1109         char subject[SIZ];
1110         struct ctdlipcmessage message;
1111         unsigned long *msgarr = NULL;
1112         int r;                  /* IPC response code */
1113
1114         if (c > 0)
1115                 mode = 1;
1116         else
1117                 mode = 0;
1118
1119         strcpy(subject, "");
1120
1121         /*
1122          * First, check to see if we have permission to enter a message in
1123          * this room.  The server will return an error code if we can't.
1124          */
1125         strcpy(message.recipient, "");
1126         strcpy(message.author, "");
1127         strcpy(message.subject, "");
1128         message.text = message.author;  /* point to "", changes later */
1129         message.anonymous = 0;
1130         message.type = mode;
1131         r = CtdlIPCPostMessage(ipc, 0, &message, buf);
1132
1133         if (r / 100 != 2 && r / 10 != 57) {
1134                 scr_printf("%s\n", buf);
1135                 return (1);
1136         }
1137
1138         /* Error code 570 is special.  It means that we CAN enter a message
1139          * in this room, but a recipient needs to be specified.
1140          */
1141         need_recp = 0;
1142         if (r / 10 == 57) {
1143                 need_recp = 1;
1144         }
1145
1146         /* If the user is a dumbass, tell them how to type. */
1147         if ((userflags & US_EXPERT) == 0) {
1148                 formout(ipc, "entermsg");
1149         }
1150
1151         /* Handle the selection of a recipient, if necessary. */
1152         strcpy(buf, "");
1153         if (need_recp == 1) {
1154                 if (axlevel >= 2) {
1155                         if (is_reply) {
1156                                 strcpy(buf, reply_to);
1157                         } else {
1158                                 scr_printf("Enter recipient: ");
1159                                 getline(buf, (SIZ-100) );
1160                                 if (strlen(buf) == 0)
1161                                         return (1);
1162                         }
1163                 } else
1164                         strcpy(buf, "sysop");
1165         }
1166         strcpy(message.recipient, buf);
1167
1168         if (is_reply) {
1169                 if (strlen(reply_subject) > 0) {
1170                         if (!strncasecmp(reply_subject,
1171                            "Re: ", 3)) {
1172                                 strcpy(message.subject, reply_subject);
1173                         }
1174                         else {
1175                                 snprintf(message.subject,
1176                                         sizeof message.subject,
1177                                         "Re: %s",
1178                                         reply_subject);
1179                         }
1180                 }
1181         }
1182
1183         if (room_flags & QR_ANONOPT) {
1184                 scr_printf("Anonymous (Y/N)? ");
1185                 if (yesno() == 1)
1186                         message.anonymous = 1;
1187         }
1188
1189         /* If it's mail, we've got to check the validity of the recipient... */
1190         if (strlen(message.recipient) > 0) {
1191                 r = CtdlIPCPostMessage(ipc, 0, &message, buf);
1192                 if (r / 100 != 2) {
1193                         scr_printf("%s\n", buf);
1194                         return (1);
1195                 }
1196         }
1197
1198         /* Learn the number of the newest message in in the room, so we can
1199          * tell upon saving whether someone else has posted too.
1200          */
1201         num_msgs = 0;
1202         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1203         if (r / 100 != 1) {
1204                 scr_printf("%s\n", buf);
1205         } else {
1206                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1207                         ;
1208         }
1209
1210         /* Now compose the message... */
1211         if (client_make_message(ipc, temp, message.recipient,
1212            message.anonymous, 0, c, message.subject) != 0) {
1213                 return (2);
1214         }
1215
1216         /* Reopen the temp file that was created, so we can send it */
1217         fp = fopen(temp, "r");
1218
1219         if (!fp || !(message.text = load_message_from_file(fp))) {
1220                 err_printf("*** Internal error while trying to save message!\n"
1221                         "%s: %s\n",
1222                         temp, strerror(errno));
1223                 unlink(temp);
1224                 return(errno);
1225         }
1226
1227         if (fp) fclose(fp);
1228
1229         /* Break lines that are >1024 characters, otherwise the server
1230          * will truncate them.
1231          */
1232         break_big_lines(message.text);
1233
1234         /* Transmit message to the server */
1235         r = CtdlIPCPostMessage(ipc, 1, &message, buf);
1236         if (r / 100 != 4) {
1237                 scr_printf("%s\n", buf);
1238                 return (1);
1239         }
1240
1241         /* Yes, unlink it now, so it doesn't stick around if we crash */
1242         unlink(temp);
1243
1244         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1245
1246         if (msgarr) free(msgarr);
1247         msgarr = NULL;
1248         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1249         if (r / 100 != 1) {
1250                 scr_printf("%s\n", buf);
1251         } else {
1252                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1253                         ;
1254         }
1255
1256         /* get new highest message number in room to set lrp for goto... */
1257         maxmsgnum = msgarr[num_msgs - 1];
1258
1259         /* now see if anyone else has posted in here */
1260         b = (-1);
1261         for (a = 0; a < num_msgs; ++a) {
1262                 if (msgarr[a] > highmsg) {
1263                         ++b;
1264                 }
1265         }
1266         if (msgarr) free(msgarr);
1267         msgarr = NULL;
1268
1269         /* In the Mail> room, this algorithm always counts one message
1270          * higher than in public rooms, so we decrement it by one.
1271          */
1272         if (need_recp) {
1273                 --b;
1274         }
1275
1276         if (b == 1) {
1277                 scr_printf("*** 1 additional message has been entered "
1278                         "in this room by another user.\n");
1279         }
1280         else if (b > 1) {
1281                 scr_printf("*** %d additional messages have been entered "
1282                         "in this room by other users.\n", b);
1283         }
1284
1285         return(0);
1286 }
1287
1288 /*
1289  * Do editing on a quoted file
1290  */
1291 void process_quote(void)
1292 {
1293         FILE *qfile, *tfile;
1294         char buf[128];
1295         int line, qstart, qend;
1296
1297         /* Unlink the second temp file as soon as it's opened, so it'll get
1298          * deleted even if the program dies
1299          */
1300         qfile = fopen(temp2, "r");
1301         unlink(temp2);
1302
1303         /* Display the quotable text with line numbers added */
1304         line = 0;
1305         fgets(buf, 128, qfile);
1306         while (fgets(buf, 128, qfile) != NULL) {
1307                 scr_printf("%2d %s", ++line, buf);
1308         }
1309         scr_printf("Begin quoting at [ 1] : ");
1310         getline(buf, 3);
1311         qstart = (buf[0] == 0) ? (1) : atoi(buf);
1312         scr_printf("  End quoting at [%d] : ", line);
1313         getline(buf, 3);
1314         qend = (buf[0] == 0) ? (line) : atoi(buf);
1315         rewind(qfile);
1316         line = 0;
1317         fgets(buf, 128, qfile);
1318         tfile = fopen(temp, "w");
1319         while (fgets(buf, 128, qfile) != NULL) {
1320                 if ((++line >= qstart) && (line <= qend))
1321                         fprintf(tfile, " >%s", buf);
1322         }
1323         fprintf(tfile, " \n");
1324         fclose(qfile);
1325         fclose(tfile);
1326         chmod(temp, 0666);
1327 }
1328
1329
1330
1331 /*
1332  * List the URL's which were embedded in the previous message
1333  */
1334 void list_urls(CtdlIPC *ipc)
1335 {
1336         int i;
1337         char cmd[SIZ];
1338
1339         if (num_urls == 0) {
1340                 scr_printf("There were no URL's in the previous message.\n\n");
1341                 return;
1342         }
1343
1344         for (i = 0; i < num_urls; ++i) {
1345                 scr_printf("%3d %s\n", i + 1, urls[i]);
1346         }
1347
1348         if ((i = num_urls) != 1)
1349                 i = intprompt("Display which one", 1, 1, num_urls);
1350
1351         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1352         system(cmd);
1353         scr_printf("\n");
1354 }
1355
1356
1357 /*
1358  * Run image viewer in background
1359  */
1360 int do_image_view(const char *filename)
1361 {
1362         char cmd[SIZ];
1363         pid_t childpid;
1364
1365         snprintf(cmd, sizeof cmd, imagecmd, filename);
1366         childpid = fork();
1367         if (childpid < 0) {
1368                 unlink(filename);
1369                 return childpid;
1370         }
1371
1372         if (childpid == 0) {
1373                 int retcode;
1374                 pid_t grandchildpid;
1375
1376                 grandchildpid = fork();
1377                 if (grandchildpid < 0) {
1378                         return grandchildpid;
1379                 }
1380
1381                 if (grandchildpid == 0) {
1382                         int nullfd;
1383                         int outfd = -1;
1384                         int errfd = -1;
1385
1386                         nullfd = open("/dev/null", O_WRONLY);
1387                         if (nullfd > -1) {
1388                                 dup2(1, outfd);
1389                                 dup2(2, errfd);
1390                                 dup2(nullfd, 1);
1391                                 dup2(nullfd, 2);
1392                         }
1393                         retcode = system(cmd);
1394                         if (nullfd > -1) {
1395                                 dup2(outfd, 1);
1396                                 dup2(errfd, 2);
1397                                 close(nullfd);
1398                         }
1399                         unlink(filename);
1400                         exit(retcode);
1401                 }
1402
1403                 if (grandchildpid > 0) {
1404                         exit(0);
1405                 }
1406         }
1407
1408         if (childpid > 0) {
1409                 int retcode;
1410
1411                 waitpid(childpid, &retcode, 0);
1412                 return retcode;
1413         }
1414
1415         return -1;
1416 }
1417
1418
1419 /*
1420  * View an image attached to a message
1421  */
1422 void image_view(CtdlIPC *ipc, unsigned long msg)
1423 {
1424         struct parts *ptr = last_message_parts;
1425         char part[SIZ];
1426         int found = 0;
1427
1428         /* Run through available parts */
1429         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1430                 if ((!strcasecmp(ptr->disposition, "attachment")
1431                    || !strcasecmp(ptr->disposition, "inline"))
1432                    && !strncmp(ptr->mimetype, "image/", 6)) {
1433                         found++;
1434                         if (found == 1) {
1435                                 strcpy(part, ptr->number);
1436                         }
1437                 }
1438         }
1439
1440         while (found > 0) {
1441                 if (found > 1)
1442                         strprompt("View which part (0 when done)", part, SIZ-1);
1443                 found = -found;
1444                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1445                         if ((!strcasecmp(ptr->disposition, "attachment")
1446                            || !strcasecmp(ptr->disposition, "inline"))
1447                            && !strncmp(ptr->mimetype, "image/", 6)
1448                            && !strcasecmp(ptr->number, part)) {
1449                                 char tmp[PATH_MAX];
1450                                 char buf[SIZ];
1451                                 void *file = NULL; /* The downloaded file */
1452                                 int r;
1453
1454                                 /* view image */
1455                                 found = -found;
1456                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1457                                 if (r / 100 != 2) {
1458                                         scr_printf("%s\n", buf);
1459                                 } else {
1460                                         size_t len;
1461
1462                                         len = (size_t)extract_long(buf, 0);
1463                                         progress(ipc, len, len);
1464                                         scr_flush();
1465                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1466                                         strcat(tmp, ptr->filename);
1467                                         save_buffer(file, len, tmp);
1468                                         free(file);
1469                                         do_image_view(tmp);
1470                                 }
1471                                 break;
1472                         }
1473                 }
1474                 if (found == 1)
1475                         break;
1476         }
1477 }
1478
1479
1480 /*
1481  * Read the messages in the current room
1482  */
1483 void readmsgs(CtdlIPC *ipc,
1484         enum MessageList c,             /* see listing in citadel_ipc.h */
1485         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1486         int q           /* Number of msgs to read (if c==3) */
1487 ) {
1488         int a, b, e, f, g, start;
1489         int savedpos;
1490         int hold_sw = 0;
1491         char arcflag = 0;
1492         char quotflag = 0;
1493         int hold_color = 0;
1494         char prtfile[PATH_MAX];
1495         char pagin;
1496         char cmd[SIZ];
1497         char targ[ROOMNAMELEN];
1498         char filename[PATH_MAX];
1499         char save_to[PATH_MAX];
1500         void *attachment = NULL;        /* Downloaded attachment */
1501         FILE *dest = NULL;      /* Alternate destination other than screen */
1502         int r;                          /* IPC response code */
1503
1504         if (c < 0)
1505                 b = (num_msgs - 1);
1506         else
1507                 b = 0;
1508
1509         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1510
1511         if (msg_arr) {
1512                 free(msg_arr);
1513                 msg_arr = NULL;
1514         }
1515         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1516         if (r / 100 != 1) {
1517                 scr_printf("%s\n", cmd);
1518         } else {
1519                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1520                         ;
1521         }
1522
1523         if (num_msgs == 0) {    /* TODO look at this later */
1524                 if (c == LastMessages) return;
1525                 scr_printf("*** There are no ");
1526                 if (c == NewMessages) scr_printf("new ");
1527                 if (c == OldMessages) scr_printf("old ");
1528                 scr_printf("messages in this room.\n");
1529                 return;
1530         }
1531
1532         lines_printed = 0;
1533
1534         /* this loop cycles through each message... */
1535         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1536         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1537                 while (msg_arr[a] == 0L) {
1538                         a = a + rdir;
1539                         if ((a == num_msgs) || (a == (-1)))
1540                                 return;
1541                 }
1542
1543 RAGAIN:         pagin = ((arcflag == 0)
1544                          && (quotflag == 0)
1545                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1546
1547                 /* If we're doing a quote, set the screenwidth to 72 */
1548                 if (quotflag) {
1549                         hold_sw = screenwidth;
1550                         screenwidth = 72;
1551                 }
1552
1553                 /* If printing or archiving, set the screenwidth to 80 */
1554                 if (arcflag) {
1555                         hold_sw = screenwidth;
1556                         screenwidth = 80;
1557                 }
1558
1559                 /* clear parts list */
1560                 free_parts(last_message_parts);
1561                 last_message_parts = NULL;
1562
1563                 /* now read the message... */
1564                 e = read_message(ipc, msg_arr[a], pagin, dest);
1565
1566                 /* ...and set the screenwidth back if we have to */
1567                 if ((quotflag) || (arcflag)) {
1568                         screenwidth = hold_sw;
1569                 }
1570 RMSGREAD:       scr_flush();
1571                 highest_msg_read = msg_arr[a];
1572                 if (quotflag) {
1573                         fclose(dest);
1574                         dest = NULL;
1575                         quotflag = 0;
1576                         enable_color = hold_color;
1577                         process_quote();
1578                 }
1579                 if (arcflag) {
1580                         fclose(dest);
1581                         dest = NULL;
1582                         arcflag = 0;
1583                         enable_color = hold_color;
1584                         f = fork();
1585                         if (f == 0) {
1586                                 freopen(prtfile, "r", stdin);
1587                                 screen_reset();
1588                                 stty_ctdl(SB_RESTORE);
1589                                 ka_system(printcmd);
1590                                 stty_ctdl(SB_NO_INTR);
1591                                 screen_set();
1592                                 unlink(prtfile);
1593                                 exit(0);
1594                         }
1595                         if (f > 0)
1596                                 do {
1597                                         g = wait(NULL);
1598                                 } while ((g != f) && (g >= 0));
1599                         scr_printf("Message printed.\n");
1600                 }
1601                 if (rc_alt_semantics && c == 1) {
1602                         char buf[SIZ];
1603
1604                         r = CtdlIPCSetMessageSeen(ipc, msg_arr[a], 1, buf);
1605                 }
1606                 if (e == 3)
1607                         return;
1608                 if (((userflags & US_NOPROMPT) || (e == 2))
1609                     && (((room_flags & QR_MAILBOX) == 0)
1610                         || (rc_force_mail_prompts == 0))) {
1611                         e = 'n';
1612                 } else {
1613                         color(DIM_WHITE);
1614                         scr_printf("(");
1615                         color(BRIGHT_WHITE);
1616                         scr_printf("%d", num_msgs - a - 1);
1617                         color(DIM_WHITE);
1618                         scr_printf(") ");
1619
1620                         keyopt("<B>ack <A>gain <Q>uote <R>eply <N>ext <S>top ");
1621                         if (rc_url_cmd[0] && num_urls)
1622                                 keyopt("<U>RLview ");
1623                         if (has_images > 0 && strlen(imagecmd) > 0)
1624                                 keyopt("<I>mages ");
1625                         keyopt("<?>help -> ");
1626
1627                         do {
1628                                 lines_printed = 2;
1629                                 e = (inkey() & 127);
1630                                 e = tolower(e);
1631 /* return key same as <N> */ if (e == 10)
1632                                         e = 'n';
1633 /* space key same as <N> */ if (e == 32)
1634                                         e = 'n';
1635 /* del/move for aides only */
1636                                     if ((!is_room_aide)
1637                                         && ((room_flags & QR_MAILBOX) ==
1638                                             0)) {
1639                                         if ((e == 'd') || (e == 'm'))
1640                                                 e = 0;
1641                                 }
1642 /* print only if available */
1643                                 if ((e == 'p') && (strlen(printcmd) == 0))
1644                                         e = 0;
1645 /* can't file if not allowed */
1646                                     if ((e == 'f')
1647                                         && (rc_allow_attachments == 0))
1648                                         e = 0;
1649 /* link only if browser avail*/
1650                                     if ((e == 'u')
1651                                         && (strlen(rc_url_cmd) == 0))
1652                                         e = 0;
1653                                 if ((e == 'i')
1654                                         && (!strlen(imagecmd) || !has_images))
1655                                         e = 0;
1656                         } while ((e != 'a') && (e != 'n') && (e != 's')
1657                                  && (e != 'd') && (e != 'm') && (e != 'p')
1658                                  && (e != 'q') && (e != 'b') && (e != 'h')
1659                                  && (e != 'r') && (e != 'f') && (e != '?')
1660                                  && (e != 'u') && (e != 'c') && (e != 'y')
1661                                  && (e != 'i'));
1662                         switch (e) {
1663                         case 's':
1664                                 scr_printf("Stop");
1665                                 break;
1666                         case 'a':
1667                                 scr_printf("Again");
1668                                 break;
1669                         case 'd':
1670                                 scr_printf("Delete");
1671                                 break;
1672                         case 'm':
1673                                 scr_printf("Move");
1674                                 break;
1675                         case 'c':
1676                                 scr_printf("Copy");
1677                                 break;
1678                         case 'n':
1679                                 scr_printf("Next");
1680                                 break;
1681                         case 'p':
1682                                 scr_printf("Print");
1683                                 break;
1684                         case 'q':
1685                                 scr_printf("Quote");
1686                                 break;
1687                         case 'b':
1688                                 scr_printf("Back");
1689                                 break;
1690                         case 'h':
1691                                 scr_printf("Header");
1692                                 break;
1693                         case 'r':
1694                                 scr_printf("Reply");
1695                                 break;
1696                         case 'f':
1697                                 scr_printf("File");
1698                                 break;
1699                         case 'u':
1700                                 scr_printf("URL's");
1701                                 break;
1702                         case 'y':
1703                                 scr_printf("mY next");
1704                                 break;
1705                         case 'i':
1706                                 break;
1707                         case '?':
1708                                 scr_printf("? <help>");
1709                                 break;
1710                         }
1711                         if (userflags & US_DISAPPEAR || e == 'i')
1712                                 scr_printf("\r%79s\r", "");
1713                         else
1714                                 scr_printf("\n");
1715                         scr_flush();
1716                 }
1717                 switch (e) {
1718                 case '?':
1719                         scr_printf("Options available here:\n"
1720                                 " ?  Help (prints this message)\n"
1721                                 " S  Stop reading immediately\n"
1722                                 " A  Again (repeats last message)\n"
1723                                 " N  Next (continue with next message)\n"
1724                                 " Y  My Next (continue with next message you authored)\n"
1725                                 " B  Back (go back to previous message)\n");
1726                         if ((is_room_aide)
1727                             || (room_flags & QR_MAILBOX)) {
1728                                 scr_printf(" D  Delete this message\n"
1729                                         " M  Move message to another room\n");
1730                         }
1731                         scr_printf(" C  Copy message to another room\n");
1732                         if (strlen(printcmd) > 0)
1733                                 scr_printf(" P  Print this message\n");
1734                         scr_printf(
1735                                 " Q  Quote portions of this message for your next post\n"
1736                                 " H  Headers (display message headers only)\n");
1737                         if (is_mail)
1738                                 scr_printf(" R  Reply to this message\n");
1739                         if (rc_allow_attachments)
1740                                 scr_printf
1741                                     (" F  (save attachments to a file)\n");
1742                         if (strlen(rc_url_cmd) > 0)
1743                                 scr_printf(" U  (list URL's for display)\n");
1744                         if (strlen(imagecmd) > 0 && has_images > 0)
1745                                 scr_printf(" I  Image viewer\n");
1746                         scr_printf("\n");
1747                         goto RMSGREAD;
1748                 case 'p':
1749                         scr_flush();
1750                         dest = fopen(prtfile, "w");
1751                         arcflag = 1;
1752                         hold_color = enable_color;
1753                         enable_color = 0;
1754                         goto RAGAIN;
1755                 case 'q':
1756                         scr_flush();
1757                         dest = fopen(temp2, "w");
1758                         quotflag = 1;
1759                         hold_color = enable_color;
1760                         enable_color = 0;
1761                         goto RAGAIN;
1762                 case 's':
1763                         return;
1764                 case 'a':
1765                         goto RAGAIN;
1766                 case 'b':
1767                         a = a - (rdir * 2);
1768                         break;
1769                 case 'm':
1770                 case 'c':
1771                         newprompt("Enter target room: ",
1772                                   targ, ROOMNAMELEN - 1);
1773                         if (strlen(targ) > 0) {
1774                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1775                                                        msg_arr[a], targ, cmd);
1776                                 scr_printf("%s\n", cmd);
1777                                 if (r / 100 == 2)
1778                                         msg_arr[a] = 0L;
1779                         } else {
1780                                 goto RMSGREAD;
1781                         }
1782                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1783                                 goto RMSGREAD;  /* the logic here sucks */
1784                         break;
1785                 case 'f':
1786                         newprompt("Which section? ", filename,
1787                                   ((sizeof filename) - 1));
1788                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1789                                         filename, &attachment, progress, cmd);
1790                         if (r / 100 != 2) {
1791                                 scr_printf("%s\n", cmd);
1792                         } else {
1793                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1794                                 /*
1795                                  * Part 1 won't have a filename; use the
1796                                  * subject of the message instead. IO
1797                                  */
1798                                 if (!strlen(filename))
1799                                         strcpy(filename, reply_subject);
1800                                 destination_directory(save_to, filename);
1801                                 save_buffer(attachment,
1802                                                 extract_unsigned_long(cmd, 0),
1803                                                 save_to);
1804                         }
1805                         if (attachment) {
1806                                 free(attachment);
1807                                 attachment = NULL;
1808                         }
1809                         goto RMSGREAD;
1810                 case 'd':
1811                         scr_printf("*** Delete this message? ");
1812                         if (yesno() == 1) {
1813                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1814                                 scr_printf("%s\n", cmd);
1815                                 if (r / 100 == 2)
1816                                         msg_arr[a] = 0L;
1817                         } else {
1818                                 goto RMSGREAD;
1819                         }
1820                         break;
1821                 case 'h':
1822                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1823                         goto RMSGREAD;
1824                 case 'r':
1825                         savedpos = num_msgs;
1826                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0));
1827                         num_msgs = savedpos;
1828                         goto RMSGREAD;
1829                 case 'u':
1830                         list_urls(ipc);
1831                         goto RMSGREAD;
1832                 case 'i':
1833                         image_view(ipc, msg_arr[a]);
1834                         goto RMSGREAD;
1835             case 'y':
1836           { /* hack hack hack */
1837             /* find the next message by me, stay here if we find nothing */
1838             int finda;
1839             int lasta = a;
1840             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1841               {
1842                 /* This is repetitively dumb, but that's what computers are for.
1843                    We have to load up messages until we find one by us */
1844                 char buf[SIZ];
1845                 int founda = 0;
1846                 struct ctdlipcmessage *msg = NULL;
1847
1848                 /* read the header so we can get 'from=' */
1849                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1850                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1851                         a = lasta; /* meesa current */
1852                         founda = 1;
1853                 }
1854
1855                 free(msg);
1856
1857                 if (founda)
1858                         break; /* for */
1859                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1860               } /* for */
1861           } /* case 'y' */
1862       } /* switch */
1863         }                       /* end for loop */
1864 }                               /* end read routine */
1865
1866
1867
1868
1869 /*
1870  * View and edit a system message
1871  */
1872 void edit_system_message(CtdlIPC *ipc, char *which_message)
1873 {
1874         char desc[SIZ];
1875         char read_cmd[SIZ];
1876         char write_cmd[SIZ];
1877
1878         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1879         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1880         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1881         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1882 }
1883
1884
1885
1886
1887 /*
1888  * Verify the message base
1889  */
1890 void check_message_base(CtdlIPC *ipc)
1891 {
1892         char buf[SIZ];
1893         char *transcript = NULL;
1894         int r;          /* IPC response code */
1895
1896         scr_printf
1897             ("Please read the documentation before running this command.\n"
1898             "Having done so, do you still want to check the message base? ");
1899         if (yesno() == 0)
1900                 return;
1901
1902         r = CtdlIPCMessageBaseCheck(ipc, &transcript, buf);
1903         if (r / 100 != 1) {
1904                 scr_printf("%s\n", buf);
1905                 return;
1906         }
1907
1908         while (transcript && strlen(transcript)) {
1909                 lines_printed = 1;
1910                 extract_token(buf, transcript, 0, '\n', sizeof buf);
1911                 remove_token(transcript, 0, '\n');
1912                 pprintf("%s\n", buf);
1913         }
1914         if (transcript) free(transcript);
1915         return;
1916 }
1917
1918
1919 /*
1920  * Loads the contents of a file into memory.  Caller must free the allocated
1921  * memory.
1922  */
1923 char *load_message_from_file(FILE *src)
1924 {
1925         size_t i;
1926         size_t got = 0;
1927         char *dest = NULL;
1928
1929         fseek(src, 0, SEEK_END);
1930         i = ftell(src);
1931         rewind(src);
1932
1933         dest = (char *)calloc(1, i + 1);
1934         if (!dest)
1935                 return NULL;
1936
1937         while (got < i) {
1938                 size_t g;
1939
1940                 g = fread(dest + got, 1, i - got, src);
1941                 got += g;
1942                 if (g < i - got) {
1943                         /* Interrupted system call, keep going */
1944                         if (errno == EINTR)
1945                                 continue;
1946                         /* At this point we have either EOF or error */
1947                         i = got;
1948                         break;
1949                 }
1950                 dest[i] = 0;
1951         }
1952
1953         return dest;
1954 }