citadel/textclient/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <sys/types.h>
  19 #include <fcntl.h>
  20 #include <stdio.h>
  21 #include <ctype.h>
  22 #include <string.h>
  23 #include <signal.h>
  24 #include <errno.h>
  25 #include <limits.h>
  26 #include <sys/wait.h>
  27 #include <sys/stat.h>
  28
  29 #if TIME_WITH_SYS_TIME
  30 # include <sys/time.h>
  31 # include <time.h>
  32 #else
  33 # if HAVE_SYS_TIME_H
  34 #  include <sys/time.h>
  35 # else
  36 #  include <time.h>
  37 # endif
  38 #endif
  39
  40 #ifdef HAVE_PTHREAD_H
  41 #include <pthread.h>
  42 #endif
  43
  44 #include <stdarg.h>
  45 #include <libcitadel.h>
  46 #include "citadel.h"
  47 #include "citadel_ipc.h"
  48 #include "citadel_decls.h"
  49 #include "messages.h"
  50 #include "commands.h"
  51 #include "rooms.h"
  52 #ifndef HAVE_SNPRINTF
  53 #include "snprintf.h"
  54 #endif
  55 #include "screen.h"
  56
  57 #define MAXWORDBUF SIZ
  58 #define NO_REPLY_TO     "nobody ... xxxxxx"
  59
  60 char reply_to[SIZ];
  61 char reply_subject[SIZ];
  62 char reply_references[SIZ];
  63 char reply_inreplyto[SIZ];
  64
  65 struct cittext {
  66         struct cittext *next;
  67         char text[MAXWORDBUF];
  68 };
  69
  70 void stty_ctdl(int cmd);
  71 int haschar(const char *st, int ch);
  72 void ctdl_getline(char *string, int lim);
  73 int file_checksum(char *filename);
  74 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  75
  76 unsigned long *msg_arr = NULL;
  77 int msg_arr_size = 0;
  78 int num_msgs;
  79 char rc_alt_semantics;
  80 extern char room_name[];
  81 extern char tempdir[];
  82 extern unsigned room_flags;
  83 extern unsigned room_flags2;
  84 extern int entmsg_ok;
  85 extern long highest_msg_read;
  86 extern char temp[];
  87 extern char temp2[];
  88 extern int screenwidth;
  89 extern int screenheight;
  90 extern long maxmsgnum;
  91 extern char is_mail;
  92 extern char is_aide;
  93 extern char is_room_aide;
  94 extern char fullname[];
  95 extern char axlevel;
  96 extern unsigned userflags;
  97 extern char sigcaught;
  98 extern char printcmd[];
  99 extern int rc_allow_attachments;
 100 extern int rc_display_message_numbers;
 101 extern int rc_force_mail_prompts;
 102 extern int editor_pid;
 103 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 104 int num_urls = 0;
 105 char urls[MAXURLS][SIZ];
 106 char imagecmd[SIZ];
 107 int has_images = 0;                             /* Current msg has images */
 108 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 109
 110
 111
 112 void ka_sigcatch(int signum)
 113 {
 114         alarm(S_KEEPALIVE);
 115         signal(SIGALRM, ka_sigcatch);
 116         CtdlIPCNoop(ipc_for_signal_handlers);
 117 }
 118
 119
 120 /*
 121  * server keep-alive version of wait() (needed for external editor)
 122  */
 123 pid_t ka_wait(int *kstatus)
 124 {
 125         pid_t p;
 126
 127         alarm(S_KEEPALIVE);
 128         signal(SIGALRM, ka_sigcatch);
 129         do {
 130                 errno = 0;
 131                 p = wait(kstatus);
 132         } while (errno == EINTR);
 133         signal(SIGALRM, SIG_IGN);
 134         alarm(0);
 135         return (p);
 136 }
 137
 138
 139 /*
 140  * version of system() that uses ka_wait()
 141  */
 142 int ka_system(char *shc)
 143 {
 144         pid_t childpid;
 145         pid_t waitpid;
 146         int retcode;
 147
 148         childpid = fork();
 149         if (childpid < 0) {
 150                 color(BRIGHT_RED);
 151                 perror("Cannot fork");
 152                 color(DIM_WHITE);
 153                 return ((pid_t) childpid);
 154         }
 155
 156         if (childpid == 0) {
 157                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 158                 exit(127);
 159         }
 160
 161         if (childpid > 0) {
 162                 do {
 163                         waitpid = ka_wait(&retcode);
 164                 } while (waitpid != childpid);
 165                 return (retcode);
 166         }
 167
 168         return (-1);
 169 }
 170
 171
 172
 173 /*
 174  * add a newline to the buffer...
 175  */
 176 void add_newline(struct cittext *textlist)
 177 {
 178         struct cittext *ptr;
 179
 180         ptr = textlist;
 181         while (ptr->next != NULL)
 182                 ptr = ptr->next;
 183
 184         while (ptr->text[strlen(ptr->text) - 1] == 32)
 185                 ptr->text[strlen(ptr->text) - 1] = 0;
 186         /* strcat(ptr->text,"\n"); */
 187
 188         ptr->next = (struct cittext *)
 189             malloc(sizeof(struct cittext));
 190         ptr = ptr->next;
 191         ptr->next = NULL;
 192         strcpy(ptr->text, "");
 193 }
 194
 195
 196 /*
 197  * add a word to the buffer...
 198  */
 199 void add_word(struct cittext *textlist, char *wordbuf)
 200 {
 201         struct cittext *ptr;
 202
 203         ptr = textlist;
 204         while (ptr->next != NULL)
 205                 ptr = ptr->next;
 206
 207         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 208                 ptr->next = (struct cittext *)
 209                     malloc(sizeof(struct cittext));
 210                 ptr = ptr->next;
 211                 ptr->next = NULL;
 212                 strcpy(ptr->text, "");
 213         }
 214
 215         strcat(ptr->text, wordbuf);
 216         strcat(ptr->text, " ");
 217 }
 218
 219
 220 /*
 221  * begin editing of an opened file pointed to by fp
 222  */
 223 void citedit(FILE *fp)
 224 {
 225         int a, prev, finished, b, last_space;
 226         int appending = 0;
 227         struct cittext *textlist = NULL;
 228         struct cittext *ptr;
 229         char wordbuf[MAXWORDBUF];
 230         int rv = 0;
 231
 232         /* first, load the text into the buffer */
 233         fseek(fp, 0L, 0);
 234         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 235         textlist->next = NULL;
 236         strcpy(textlist->text, "");
 237
 238         strcpy(wordbuf, "");
 239         prev = (-1);
 240         while (a = getc(fp), a >= 0) {
 241                 appending = 1;
 242                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 243                         add_word(textlist, wordbuf);
 244                         strcpy(wordbuf, "");
 245                         if ((prev == 13) || (prev == 10)) {
 246                                 add_word(textlist, "\n");
 247                                 add_newline(textlist);
 248                                 add_word(textlist, "");
 249                         }
 250                 } else {
 251                         wordbuf[strlen(wordbuf) + 1] = 0;
 252                         wordbuf[strlen(wordbuf)] = a;
 253                 }
 254                 if (strlen(wordbuf) + 3 > screenwidth) {
 255                         add_word(textlist, wordbuf);
 256                         strcpy(wordbuf, "");
 257                 }
 258                 prev = a;
 259         }
 260
 261         /* get text */
 262         finished = 0;
 263         prev = (appending ? 13 : (-1));
 264         strcpy(wordbuf, "");
 265         async_ka_start();
 266         do {
 267                 a = inkey();
 268                 if (a == 10)
 269                         a = 13;
 270                 if (a == 9)
 271                         a = 32;
 272                 if (a == 127)
 273                         a = 8;
 274
 275                 if ((a != 32) && (prev == 13)) {
 276                         add_word(textlist, "\n");
 277                         scr_printf(" ");
 278                 }
 279
 280                 if ((a == 32) && (prev == 13)) {
 281                         add_word(textlist, "\n");
 282                         add_newline(textlist);
 283                 }
 284
 285                 if (a == 8) {
 286                         if (!IsEmptyStr(wordbuf)) {
 287                                 wordbuf[strlen(wordbuf) - 1] = 0;
 288                                 scr_putc(8);
 289                                 scr_putc(32);
 290                                 scr_putc(8);
 291                         }
 292                 } else if (a == 23) {
 293                         do {
 294                                 wordbuf[strlen(wordbuf) - 1] = 0;
 295                                 scr_putc(8);
 296                                 scr_putc(32);
 297                                 scr_putc(8);
 298                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 299                 } else if (a == 13) {
 300                         scr_printf("\n");
 301                         if (IsEmptyStr(wordbuf))
 302                                 finished = 1;
 303                         else {
 304                                 for (b = 0; b < strlen(wordbuf); ++b)
 305                                         if (wordbuf[b] == 32) {
 306                                                 wordbuf[b] = 0;
 307                                                 add_word(textlist,
 308                                                          wordbuf);
 309                                                 strcpy(wordbuf,
 310                                                        &wordbuf[b + 1]);
 311                                                 b = 0;
 312                                         }
 313                                 add_word(textlist, wordbuf);
 314                                 strcpy(wordbuf, "");
 315                         }
 316                 } else {
 317                         scr_putc(a);
 318                         wordbuf[strlen(wordbuf) + 1] = 0;
 319                         wordbuf[strlen(wordbuf)] = a;
 320                 }
 321                 if ((strlen(wordbuf) + 3) > screenwidth) {
 322                         last_space = (-1);
 323                         for (b = 0; b < strlen(wordbuf); ++b)
 324                                 if (wordbuf[b] == 32)
 325                                         last_space = b;
 326                         if (last_space >= 0) {
 327                                 for (b = 0; b < strlen(wordbuf); ++b)
 328                                         if (wordbuf[b] == 32) {
 329                                                 wordbuf[b] = 0;
 330                                                 add_word(textlist,
 331                                                          wordbuf);
 332                                                 strcpy(wordbuf,
 333                                                        &wordbuf[b + 1]);
 334                                                 b = 0;
 335                                         }
 336                                 for (b = 0; b < strlen(wordbuf); ++b) {
 337                                         scr_putc(8);
 338                                         scr_putc(32);
 339                                         scr_putc(8);
 340                                 }
 341                                 scr_printf("\n%s", wordbuf);
 342                         } else {
 343                                 add_word(textlist, wordbuf);
 344                                 strcpy(wordbuf, "");
 345                                 scr_printf("\n");
 346                         }
 347                 }
 348                 prev = a;
 349         } while (finished == 0);
 350         async_ka_end();
 351
 352         /* write the buffer back to disk */
 353         fseek(fp, 0L, 0);
 354         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 355                 fprintf(fp, "%s", ptr->text);
 356         }
 357         putc(10, fp);
 358         fflush(fp);
 359         rv = ftruncate(fileno(fp), ftell(fp));
 360         if (rv < 0)
 361                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 362
 363
 364         /* and deallocate the memory we used */
 365         while (textlist != NULL) {
 366                 ptr = textlist->next;
 367                 free(textlist);
 368                 textlist = ptr;
 369         }
 370 }
 371
 372
 373 /*
 374  * Free the struct parts
 375  */
 376 void free_parts(struct parts *p)
 377 {
 378         struct parts *a_part = p;
 379
 380         while (a_part) {
 381                 struct parts *q;
 382
 383                 q = a_part;
 384                 a_part = a_part->next;
 385                 free(q);
 386         }
 387 }
 388
 389
 390 /*
 391  * Read a message from the server
 392  */
 393 int read_message(CtdlIPC *ipc,
 394         long num,   /* message number */
 395         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 396         FILE *dest) /* Destination file, NULL for screen */
 397 {
 398         char buf[SIZ];
 399         char now[SIZ];
 400         int format_type = 0;
 401         int fr = 0;
 402         int nhdr = 0;
 403         struct ctdlipcmessage *message = NULL;
 404         int r;                          /* IPC response code */
 405         char *converted_text = NULL;
 406         char *lineptr;
 407         char *nextline;
 408         char *searchptr;
 409         int i;
 410         char ch;
 411         int linelen;
 412         int final_line_is_blank = 0;
 413
 414         has_images = 0;
 415
 416         sigcaught = 0;
 417         stty_ctdl(1);
 418
 419         strcpy(reply_to, NO_REPLY_TO);
 420         strcpy(reply_subject, "");
 421         strcpy(reply_references, "");
 422         strcpy(reply_inreplyto, "");
 423
 424         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 425         if (r / 100 != 1) {
 426                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 427                 stty_ctdl(0);
 428                 free(message->text);
 429                 free_parts(message->attachments);
 430                 free(message);
 431                 return (0);
 432         }
 433
 434         if (dest) {
 435                 fprintf(dest, "\n ");
 436         } else {
 437                 scr_printf("\n");
 438                 if (pagin != 2)
 439                         scr_printf(" ");
 440         }
 441         if (pagin == 1 && !dest) {
 442                 color(BRIGHT_CYAN);
 443         }
 444
 445         /* View headers only */
 446         if (pagin == 2) {
 447                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 448                                 message->nhdr ? "yes" : "no",
 449                                 message->author, message->type,
 450                                 message->msgid);
 451                 if (!IsEmptyStr(message->subject)) {
 452                         scr_printf("subj=%s\n", message->subject);
 453                 }
 454                 if (!IsEmptyStr(message->email)) {
 455                         scr_printf("rfca=%s\n", message->email);
 456                 }
 457                 scr_printf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 458                                 message->hnod, message->room,
 459                                 message->node,
 460                                 asctime(localtime(&message->time)));
 461                 if (!IsEmptyStr(message->recipient)) {
 462                         scr_printf("rcpt=%s\n", message->recipient);
 463                 }
 464                 if (message->attachments) {
 465                         struct parts *ptr;
 466
 467                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 468                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 469                                         ptr->name, ptr->filename, ptr->number,
 470                                         ptr->disposition, ptr->mimetype,
 471                                         ptr->length);
 472                         }
 473                 }
 474                 scr_printf("\n");
 475                 stty_ctdl(0);
 476                 free(message->text);
 477                 free_parts(message->attachments);
 478                 free(message);
 479                 return (0);
 480         }
 481
 482         if (rc_display_message_numbers) {
 483                 if (dest) {
 484                         fprintf(dest, "[#%s] ", message->msgid);
 485                 } else {
 486                         color(DIM_WHITE);
 487                         scr_printf("[");
 488                         color(BRIGHT_WHITE);
 489                         scr_printf("#%s", message->msgid);
 490                         color(DIM_WHITE);
 491                         scr_printf("] ");
 492                 }
 493         }
 494         if (nhdr == 1 && !is_room_aide) {
 495                 if (dest) {
 496                         fprintf(dest, " ****");
 497                 } else {
 498                         scr_printf(" ****");
 499                 }
 500         } else {
 501                 fmt_date(now, sizeof now, message->time, 0);
 502                 if (dest) {
 503                         fprintf(dest, "%s from %s ", now, message->author);
 504                         if (!IsEmptyStr(message->email)) {
 505                                 fprintf(dest, "<%s> ", message->email);
 506                         }
 507                 } else {
 508                         color(BRIGHT_CYAN);
 509                         scr_printf("%s ", now);
 510                         color(DIM_WHITE);
 511                         scr_printf("from ");
 512                         color(BRIGHT_CYAN);
 513                         scr_printf("%s ", message->author);
 514                         if (!IsEmptyStr(message->email)) {
 515                                 color(DIM_WHITE);
 516                                 scr_printf("<");
 517                                 color(BRIGHT_BLUE);
 518                                 scr_printf("%s", message->email);
 519                                         color(DIM_WHITE);
 520                                 scr_printf("> ");
 521                         }
 522                 }
 523                 if (!IsEmptyStr(message->node)) {
 524                         if ((room_flags & QR_NETWORK)
 525                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 526                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 527                                 if (IsEmptyStr(message->email)) {
 528                                         if (dest) {
 529                                                 fprintf(dest, "@%s ", message->node);
 530                                         } else {
 531                                                 color(DIM_WHITE);
 532                                                 scr_printf("@");
 533                                                 color(BRIGHT_YELLOW);
 534                                                 scr_printf("%s ", message->node);
 535                                         }
 536                                 }
 537                         }
 538                 }
 539                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 540                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 541                         if (dest) {
 542                                 fprintf(dest, "(%s) ", message->hnod);
 543                         } else {
 544                                 color(DIM_WHITE);
 545                                 scr_printf("(");
 546                                 color(BRIGHT_WHITE);
 547                                 scr_printf("%s", message->hnod);
 548                                 color(DIM_WHITE);
 549                                 scr_printf(") ");
 550                         }
 551                 }
 552                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 553                         if (dest) {
 554                                 fprintf(dest, "in %s> ", message->room);
 555                         } else {
 556                                 color(DIM_WHITE);
 557                                 scr_printf("in ");
 558                                 color(BRIGHT_MAGENTA);
 559                                 scr_printf("%s> ", message->room);
 560                         }
 561                 }
 562                 if (!IsEmptyStr(message->recipient)) {
 563                         if (dest) {
 564                                 fprintf(dest, "to %s ", message->recipient);
 565                         } else {
 566                                 color(DIM_WHITE);
 567                                 scr_printf("to ");
 568                                 color(BRIGHT_CYAN);
 569                                 scr_printf("%s ", message->recipient);
 570                         }
 571                 }
 572         }
 573
 574         if (dest) {
 575                 fprintf(dest, "\n");
 576         } else {
 577                 scr_printf("\n");
 578         }
 579
 580         /* Set the reply-to address to an Internet e-mail address if possible
 581          */
 582         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 583                 if (!IsEmptyStr(message->author)) {
 584                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 585                 }
 586                 else {
 587                         safestrncpy(reply_to, message->email, sizeof reply_to);
 588                 }
 589         }
 590
 591         /* But if we can't do that, set it to a Citadel address.
 592          */
 593         if (!strcmp(reply_to, NO_REPLY_TO)) {
 594                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 595                          message->author, message->node);
 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                         }
 618                 }
 619         }
 620
 621         if (pagin == 1 && !dest) {
 622                 color(BRIGHT_WHITE);
 623         }
 624
 625         /******* end of header output, start of message text output *******/
 626
 627         /*
 628          * Convert HTML to plain text, formatting for the actual width
 629          * of the client screen.
 630          */
 631         if (!strcasecmp(message->content_type, "text/html")) {
 632                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 633                 if (converted_text != NULL) {
 634                         free(message->text);
 635                         message->text = converted_text;
 636                         format_type = 1;
 637                 }
 638         }
 639
 640         /* Text/plain is a different type */
 641         if (!strcasecmp(message->content_type, "text/plain")) {
 642                 format_type = 1;
 643         }
 644
 645         /* Extract URL's */
 646         num_urls = 0;   /* Start with a clean slate */
 647         searchptr = message->text;
 648         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 649                 searchptr = strstr(searchptr, "http://");
 650                 if (searchptr != NULL) {
 651                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 652                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 653                                 ch = urls[num_urls][i];
 654                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 655                                     ch == ' ' || ch == '\n') {
 656                                         urls[num_urls][i] = 0;
 657                                         break;
 658                                 }
 659                         }
 660                         num_urls++;
 661                         ++searchptr;
 662                 }
 663         }
 664
 665         /*
 666          * Here we go
 667          */
 668         if (format_type == 0) {
 669                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 670         } else {
 671                 /* renderer for text/plain */
 672
 673                 lineptr = message->text;
 674
 675                 do {
 676                         nextline = strchr(lineptr, '\n');
 677                         if (nextline != NULL) {
 678                                 *nextline = 0;
 679                                 ++nextline;
 680                                 if (*nextline == 0) nextline = NULL;
 681                         }
 682
 683                         if (sigcaught == 0) {
 684                                 linelen = strlen(lineptr);
 685                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 686                                         lineptr[--linelen] = 0;
 687                                 }
 688                                 if (dest) {
 689                                         fprintf(dest, "%s\n", lineptr);
 690                                 } else {
 691                                         scr_printf("%s\n", lineptr);
 692                                 }
 693                         }
 694                         if (lineptr[0] == 0) final_line_is_blank = 1;
 695                         else final_line_is_blank = 0;
 696                         lineptr = nextline;
 697                 } while (nextline);
 698                 fr = sigcaught;
 699         }
 700         if (!final_line_is_blank) {
 701                 if (dest) {
 702                         fprintf(dest, "\n");
 703                 }
 704                 else {
 705                         scr_printf("\n");
 706                         fr = sigcaught;
 707                 }
 708         }
 709
 710         /* Enumerate any attachments */
 711         if ( (pagin == 1) && (message->attachments) ) {
 712                 struct parts *ptr;
 713
 714                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 715                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 716                            || (!strcasecmp(ptr->disposition, "inline"))
 717                            || (!strcasecmp(ptr->disposition, ""))
 718                         ) {
 719                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 720                                    && (!IsEmptyStr(ptr->mimetype))
 721                                 ) {
 722                                         color(DIM_WHITE);
 723                                         scr_printf("Part ");
 724                                         color(BRIGHT_MAGENTA);
 725                                         scr_printf("%s", ptr->number);
 726                                         color(DIM_WHITE);
 727                                         scr_printf(": ");
 728                                         color(BRIGHT_CYAN);
 729                                         scr_printf("%s", ptr->filename);
 730                                         color(DIM_WHITE);
 731                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 732                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 733                                                 has_images++;
 734                                         }
 735                                 }
 736                         }
 737                 }
 738         }
 739
 740         /* Save the attachments info for later */
 741         last_message_parts = message->attachments;
 742
 743         /* Now we're done */
 744         free(message->text);
 745         free(message);
 746
 747         if (pagin == 1 && !dest)
 748                 color(DIM_WHITE);
 749         stty_ctdl(0);
 750         return (fr);
 751 }
 752
 753 /*
 754  * replace string function for the built-in editor
 755  */
 756 void replace_string(char *filename, long int startpos)
 757 {
 758         char buf[512];
 759         char srch_str[128];
 760         char rplc_str[128];
 761         FILE *fp;
 762         int a;
 763         long rpos, wpos;
 764         char *ptr;
 765         int substitutions = 0;
 766         long msglen = 0L;
 767         int rv;
 768
 769         scr_printf("Enter text to be replaced:\n: ");
 770         ctdl_getline(srch_str, (sizeof(srch_str)-1) );
 771         if (IsEmptyStr(srch_str)) {
 772                 return;
 773         }
 774
 775         scr_printf("Enter text to replace it with:\n: ");
 776         ctdl_getline(rplc_str, (sizeof(rplc_str)-1) );
 777
 778         fp = fopen(filename, "r+");
 779         if (fp == NULL) {
 780                 return;
 781         }
 782
 783         wpos = startpos;
 784         fseek(fp, startpos, 0);
 785         strcpy(buf, "");
 786         while (a = getc(fp), a > 0) {
 787                 ++msglen;
 788                 buf[strlen(buf) + 1] = 0;
 789                 buf[strlen(buf)] = a;
 790                 if (strlen(buf) >= strlen(srch_str)) {
 791                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 792                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 793                                 strcpy(ptr, rplc_str);
 794                                 ++substitutions;
 795                         }
 796                 }
 797                 if (strlen(buf) > 384) {
 798                         rpos = ftell(fp);
 799                         fseek(fp, wpos, 0);
 800                         rv = fwrite((char *) buf, 128, 1, fp);
 801                         if (rv < 0) {
 802                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 803                                 break; /*whoopsi! */
 804                         }
 805                         strcpy(buf, &buf[128]);
 806                         wpos = ftell(fp);
 807                         fseek(fp, rpos, 0);
 808                 }
 809         }
 810         fseek(fp, wpos, 0);
 811         if (!IsEmptyStr(buf)) {
 812                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 813         }
 814         wpos = ftell(fp);
 815         fclose(fp);
 816         rv = truncate(filename, wpos);
 817         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 818 }
 819
 820 /*
 821  * Function to begin composing a new message
 822  */
 823 int client_make_message(CtdlIPC *ipc,
 824                         char *filename,         /* temporary file name */
 825                         char *recipient,        /* NULL if it's not mail */
 826                         int is_anonymous,
 827                         int format_type,
 828                         int mode,
 829                         char *subject,          /* buffer to store subject line */
 830                         int subject_required
 831 ) {
 832         FILE *fp;
 833         int a, b, e_ex_code;
 834         long beg;
 835         char datestr[SIZ];
 836         char header[SIZ];
 837         char *editor_path = NULL;
 838         int cksum = 0;
 839
 840         if (mode >= 2)
 841         {
 842                 if ((mode-2) < MAX_EDITORS && !IsEmptyStr(editor_paths[mode-2]))
 843                 {
 844                         editor_path = editor_paths[mode-2];
 845                 } else if (!IsEmptyStr(editor_paths[0]))
 846                 {
 847                         editor_path = editor_paths[0];
 848                 } else {
 849                         scr_printf("*** No editor available; using built-in editor.\n");
 850                         mode = 0;
 851                 }
 852         }
 853
 854         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 855         header[0] = 0;
 856
 857         if (room_flags & QR_ANONONLY && !recipient) {
 858                 snprintf(header, sizeof header, " ****");
 859         }
 860         else {
 861                 snprintf(header, sizeof header,
 862                         " %s from %s",
 863                         datestr,
 864                         (is_anonymous ? "[anonymous]" : fullname)
 865                         );
 866                 if (!IsEmptyStr(recipient)) {
 867                         size_t tmp = strlen(header);
 868                         snprintf(&header[tmp], sizeof header - tmp,
 869                                 " to %s", recipient);
 870                 }
 871         }
 872         scr_printf("%s\n", header);
 873         if (subject != NULL) if (!IsEmptyStr(subject)) {
 874                 scr_printf("Subject: %s\n", subject);
 875         }
 876
 877         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 878                 newprompt("Subject: ", subject, 70);
 879         }
 880
 881         if (mode == 1) {
 882                 scr_printf("(Press ctrl-d when finished)\n");
 883         }
 884
 885         if (mode == 0) {
 886                 fp = fopen(filename, "r");
 887                 if (fp != NULL) {
 888                         fmout(screenwidth, fp, NULL, NULL, 0);
 889                         beg = ftell(fp);
 890                         if (beg < 0)
 891                                 scr_printf("failed to get stream position %s\n",
 892                                            strerror(errno));
 893                         fclose(fp);
 894                 } else {
 895                         fp = fopen(filename, "w");
 896                         if (fp == NULL) {
 897                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 898                                         filename, strerror(errno)
 899                                 );
 900                         return(1);
 901                         }
 902                         fclose(fp);
 903                 }
 904         }
 905
 906 ME1:    switch (mode) {
 907
 908         case 0:
 909                 fp = fopen(filename, "r+");
 910                 if (fp == NULL) {
 911                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 912                                 filename, strerror(errno)
 913                         );
 914                         return(1);
 915                 }
 916                 citedit(fp);
 917                 fclose(fp);
 918                 goto MECR;
 919
 920         case 1:
 921                 fp = fopen(filename, "a");
 922                 if (fp == NULL) {
 923                         scr_printf("*** Error opening temp file!\n"
 924                                 "    %s: %s\n",
 925                                 filename, strerror(errno));
 926                         return(1);
 927                 }
 928                 do {
 929                         a = inkey();
 930                         if (a == 255)
 931                                 a = 32;
 932                         if (a == 13)
 933                                 a = 10;
 934                         if (a != 4) {
 935                                 putc(a, fp);
 936                                 scr_putc(a);
 937                         }
 938                         if (a == 10)
 939                                 scr_putc(10);
 940                 } while (a != 4);
 941                 fclose(fp);
 942                 break;
 943
 944         case 2:
 945         default:        /* allow 2+ modes */
 946                 e_ex_code = 1;  /* start with a failed exit code */
 947                 stty_ctdl(SB_RESTORE);
 948                 editor_pid = fork();
 949                 cksum = file_checksum(filename);
 950                 if (editor_pid == 0) {
 951                         char tmp[SIZ];
 952
 953                         chmod(filename, 0600);
 954                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 955                         putenv(tmp);
 956                         execlp(editor_path, editor_path, filename, NULL);
 957                         exit(1);
 958                 }
 959                 if (editor_pid > 0)
 960                         do {
 961                                 e_ex_code = 0;
 962                                 b = ka_wait(&e_ex_code);
 963                         } while ((b != editor_pid) && (b >= 0));
 964                 editor_pid = (-1);
 965                 stty_ctdl(0);
 966                 break;
 967         }
 968
 969 MECR:   if (mode >= 2) {
 970                 if (file_checksum(filename) == cksum) {
 971                         scr_printf("*** Aborted message.\n");
 972                         e_ex_code = 1;
 973                 }
 974                 if (e_ex_code == 0) {
 975                         goto MEFIN;
 976                 }
 977                 goto MEABT2;
 978         }
 979
 980         b = keymenu("Entry command (? for options)",
 981                 "<A>bort|"
 982                 "<C>ontinue|"
 983                 "<S>ave message|"
 984                 "<P>rint formatted|"
 985                 "add s<U>bject|"
 986                 "<R>eplace string|"
 987                 "<H>old message"
 988         );
 989
 990         if (b == 'a') goto MEABT;
 991         if (b == 'c') goto ME1;
 992         if (b == 's') goto MEFIN;
 993         if (b == 'p') {
 994                 scr_printf(" %s from %s", datestr, fullname);
 995                 if (!IsEmptyStr(recipient)) {
 996                         scr_printf(" to %s", recipient);
 997                 }
 998                 scr_printf("\n");
 999                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1000                         scr_printf("Subject: %s\n", subject);
1001                 }
1002                 fp = fopen(filename, "r");
1003                 if (fp != NULL) {
1004                         fmout(screenwidth, fp, NULL, NULL, 0);
1005                         /* TODO: why ftell if we ignore the result? */
1006                         beg = ftell(fp);
1007                         if (beg < 0)
1008                                 scr_printf("failed to get stream position %s\n",
1009                                            strerror(errno));
1010                         fclose(fp);
1011                 }
1012                 goto MECR;
1013         }
1014         if (b == 'r') {
1015                 replace_string(filename, 0L);
1016                 goto MECR;
1017         }
1018         if (b == 'h') {
1019                 return (2);
1020         }
1021         if (b == 'u') {
1022                 if (subject != NULL) {
1023                         newprompt("Subject: ", subject, 70);
1024                 }
1025                 goto MECR;
1026         }
1027
1028 MEFIN:  return (0);
1029
1030 MEABT:  scr_printf("Are you sure? ");
1031         if (yesno() == 0) {
1032                 goto ME1;
1033         }
1034 MEABT2: unlink(filename);
1035         return (2);
1036 }
1037
1038
1039 /*
1040  * Make sure there's room in msg_arr[] for at least one more.
1041  */
1042 void check_msg_arr_size(void) {
1043         if ((num_msgs + 1) > msg_arr_size) {
1044                 msg_arr_size += 512;
1045                 msg_arr = realloc(msg_arr,
1046                         ((sizeof(long)) * msg_arr_size) );
1047         }
1048 }
1049
1050
1051 /*
1052  * break_big_lines()  -  break up lines that are >1024 characters
1053  *                       otherwise the server will truncate
1054  */
1055 void break_big_lines(char *msg) {
1056         char *ptr;
1057         char *break_here;
1058
1059         if (msg == NULL) {
1060                 return;
1061         }
1062
1063         ptr = msg;
1064         while (strlen(ptr) > 1000) {
1065                 break_here = strchr(&ptr[900], ' ');
1066                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1067                         break_here = &ptr[999];
1068                 }
1069                 *break_here = '\n';
1070                 ptr = break_here++;
1071         }
1072 }
1073
1074
1075 /*
1076  * entmsg()  -  edit and create a message
1077  *              returns 0 if message was saved
1078  */
1079 int entmsg(CtdlIPC *ipc,
1080                 int is_reply,   /* nonzero if this was a <R>eply command */
1081                 int c,          /* mode */
1082                 int masquerade  /* prompt for a non-default display name? */
1083 ) {
1084         char buf[SIZ];
1085         int a, b;
1086         int need_recp = 0;
1087         int mode;
1088         long highmsg = 0L;
1089         FILE *fp;
1090         char subject[SIZ];
1091         struct ctdlipcmessage message;
1092         unsigned long *msgarr = NULL;
1093         int r;                  /* IPC response code */
1094         int subject_required = 0;
1095
1096         if (!entmsg_ok) {
1097                 scr_printf("You may not enter messages in this type of room.\n");
1098                 return(1);
1099         }
1100
1101         if (c > 0) {
1102                 mode = 1;
1103         }
1104         else {
1105                 mode = 0;
1106         }
1107
1108         strcpy(subject, "");
1109
1110         /*
1111          * First, check to see if we have permission to enter a message in
1112          * this room.  The server will return an error code if we can't.
1113          */
1114         strcpy(message.recipient, "");
1115         strcpy(message.author, "");
1116         strcpy(message.subject, "");
1117         strcpy(message.references, "");
1118         message.text = "";              /* point to "", changes later */
1119         message.anonymous = 0;
1120         message.type = mode;
1121
1122         if (masquerade) {
1123                 newprompt("Display name for this message: ", message.author, 40);
1124         }
1125
1126         if (is_reply) {
1127
1128                 if (!IsEmptyStr(reply_subject)) {
1129                         if (!strncasecmp(reply_subject,
1130                            "Re: ", 3)) {
1131                                 strcpy(message.subject, reply_subject);
1132                         }
1133                         else {
1134                                 snprintf(message.subject,
1135                                         sizeof message.subject,
1136                                         "Re: %s",
1137                                         reply_subject);
1138                         }
1139                 }
1140
1141                 /* Trim down excessively long lists of thread references.  We eliminate the
1142                  * second one in the list so that the thread root remains intact.
1143                  */
1144                 int rrtok = num_tokens(reply_references, '|');
1145                 int rrlen = strlen(reply_references);
1146                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1147                         remove_token(reply_references, 1, '|');
1148                 }
1149
1150                 snprintf(message.references, sizeof message.references, "%s%s%s",
1151                         reply_references,
1152                         (IsEmptyStr(reply_references) ? "" : "|"),
1153                         reply_inreplyto
1154                 );
1155         }
1156
1157         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1158
1159         if (r / 100 != 2 && r / 10 != 57) {
1160                 scr_printf("%s\n", buf);
1161                 return (1);
1162         }
1163
1164         /* Error code 570 is special.  It means that we CAN enter a message
1165          * in this room, but a recipient needs to be specified.
1166          */
1167         need_recp = 0;
1168         if (r / 10 == 57) {
1169                 need_recp = 1;
1170         }
1171
1172         /* If the user is a dumbass, tell them how to type. */
1173         if ((userflags & US_EXPERT) == 0) {
1174                 formout(ipc, "entermsg");
1175         }
1176
1177         /* Handle the selection of a recipient, if necessary. */
1178         strcpy(buf, "");
1179         if (need_recp == 1) {
1180                 if (axlevel >= AxProbU) {
1181                         if (is_reply) {
1182                                 strcpy(buf, reply_to);
1183                         } else {
1184                                 scr_printf("Enter recipient: ");
1185                                 ctdl_getline(buf, (SIZ-100) );
1186                                 if (IsEmptyStr(buf))
1187                                         return (1);
1188                         }
1189                 } else
1190                         strcpy(buf, "sysop");
1191         }
1192         strcpy(message.recipient, buf);
1193
1194         if (room_flags & QR_ANONOPT) {
1195                 scr_printf("Anonymous (Y/N)? ");
1196                 if (yesno() == 1)
1197                         message.anonymous = 1;
1198         }
1199
1200         /* If it's mail, we've got to check the validity of the recipient... */
1201         if (!IsEmptyStr(message.recipient)) {
1202                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1203                 if (r / 100 != 2) {
1204                         scr_printf("%s\n", buf);
1205                         return (1);
1206                 }
1207         }
1208
1209         /* Learn the number of the newest message in in the room, so we can
1210          * tell upon saving whether someone else has posted too.
1211          */
1212         num_msgs = 0;
1213         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1214         if (r / 100 != 1) {
1215                 scr_printf("%s\n", buf);
1216         } else {
1217                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1218                         ;
1219         }
1220
1221         /* Now compose the message... */
1222         if (client_make_message(ipc, temp, message.recipient,
1223            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1224             if (msgarr) free(msgarr);
1225                 return (2);
1226         }
1227
1228         /* Reopen the temp file that was created, so we can send it */
1229         fp = fopen(temp, "r");
1230
1231         if (!fp || !(message.text = load_message_from_file(fp))) {
1232                 scr_printf("*** Internal error while trying to save message!\n"
1233                         "%s: %s\n",
1234                         temp, strerror(errno));
1235                 unlink(temp);
1236                 return(errno);
1237         }
1238
1239         if (fp) fclose(fp);
1240
1241         /* Break lines that are >1024 characters, otherwise the server
1242          * will truncate them.
1243          */
1244         break_big_lines(message.text);
1245
1246         /* Transmit message to the server */
1247         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1248         if (r / 100 != 4) {
1249                 scr_printf("%s\n", buf);
1250                 return (1);
1251         }
1252
1253         /* Yes, unlink it now, so it doesn't stick around if we crash */
1254         unlink(temp);
1255
1256         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1257
1258         if (msgarr) free(msgarr);
1259         msgarr = NULL;
1260         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1261         if (r / 100 != 1) {
1262                 scr_printf("%s\n", buf);
1263         } else {
1264                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1265                         ;
1266         }
1267
1268         /* get new highest message number in room to set lrp for goto... */
1269         maxmsgnum = msgarr[num_msgs - 1];
1270
1271         /* now see if anyone else has posted in here */
1272         b = (-1);
1273         for (a = 0; a < num_msgs; ++a) {
1274                 if (msgarr[a] > highmsg) {
1275                         ++b;
1276                 }
1277         }
1278         if (msgarr) free(msgarr);
1279         msgarr = NULL;
1280
1281         /* In the Mail> room, this algorithm always counts one message
1282          * higher than in public rooms, so we decrement it by one.
1283          */
1284         if (need_recp) {
1285                 --b;
1286         }
1287
1288         if (b == 1) {
1289                 scr_printf("*** 1 additional message has been entered "
1290                         "in this room by another user.\n");
1291         }
1292         else if (b > 1) {
1293                 scr_printf("*** %d additional messages have been entered "
1294                         "in this room by other users.\n", b);
1295         }
1296     free(message.text);
1297
1298         return(0);
1299 }
1300
1301 /*
1302  * Do editing on a quoted file
1303  */
1304 void process_quote(void)
1305 {
1306         FILE *qfile, *tfile;
1307         char buf[128];
1308         int line, qstart, qend;
1309
1310         /* Unlink the second temp file as soon as it's opened, so it'll get
1311          * deleted even if the program dies
1312          */
1313         qfile = fopen(temp2, "r");
1314         unlink(temp2);
1315
1316         /* Display the quotable text with line numbers added */
1317         line = 0;
1318         if (fgets(buf, 128, qfile) == NULL) {
1319                 /* we're skipping a line here */
1320         }
1321         while (fgets(buf, 128, qfile) != NULL) {
1322                 scr_printf("%3d %s", ++line, buf);
1323         }
1324         scr_printf("Begin quoting at [1] : ");
1325         ctdl_getline(buf, 4);
1326         qstart = (buf[0] == 0) ? (1) : atoi(buf);
1327         scr_printf("  End quoting at [%d] : ", line);
1328         ctdl_getline(buf, 4);
1329         qend = (buf[0] == 0) ? (line) : atoi(buf);
1330         rewind(qfile);
1331         line = 0;
1332         if (fgets(buf, 128, qfile) == NULL) {
1333                 /* we're skipping a line here */
1334         }
1335         tfile = fopen(temp, "w");
1336         while (fgets(buf, 128, qfile) != NULL) {
1337                 if ((++line >= qstart) && (line <= qend))
1338                         fprintf(tfile, " >%s", buf);
1339         }
1340         fprintf(tfile, " \n");
1341         fclose(qfile);
1342         fclose(tfile);
1343         chmod(temp, 0666);
1344 }
1345
1346
1347
1348 /*
1349  * List the URL's which were embedded in the previous message
1350  */
1351 void list_urls(CtdlIPC *ipc)
1352 {
1353         int i;
1354         char cmd[SIZ];
1355         int rv;
1356
1357         if (num_urls == 0) {
1358                 scr_printf("There were no URL's in the previous message.\n\n");
1359                 return;
1360         }
1361
1362         for (i = 0; i < num_urls; ++i) {
1363                 scr_printf("%3d %s\n", i + 1, urls[i]);
1364         }
1365
1366         if ((i = num_urls) != 1)
1367                 i = intprompt("Display which one", 1, 1, num_urls);
1368
1369         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1370         rv = system(cmd);
1371         if (rv != 0)
1372                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1373         scr_printf("\n");
1374 }
1375
1376
1377 /*
1378  * Run image viewer in background
1379  */
1380 int do_image_view(const char *filename)
1381 {
1382         char cmd[SIZ];
1383         pid_t childpid;
1384
1385         snprintf(cmd, sizeof cmd, imagecmd, filename);
1386         childpid = fork();
1387         if (childpid < 0) {
1388                 unlink(filename);
1389                 return childpid;
1390         }
1391
1392         if (childpid == 0) {
1393                 int retcode;
1394                 pid_t grandchildpid;
1395
1396                 grandchildpid = fork();
1397                 if (grandchildpid < 0) {
1398                         return grandchildpid;
1399                 }
1400
1401                 if (grandchildpid == 0) {
1402                         int nullfd;
1403                         int outfd = -1;
1404                         int errfd = -1;
1405
1406                         nullfd = open("/dev/null", O_WRONLY);
1407                         if (nullfd > -1) {
1408                                 dup2(1, outfd);
1409                                 dup2(2, errfd);
1410                                 dup2(nullfd, 1);
1411                                 dup2(nullfd, 2);
1412                         }
1413                         retcode = system(cmd);
1414                         if (nullfd > -1) {
1415                                 dup2(outfd, 1);
1416                                 dup2(errfd, 2);
1417                                 close(nullfd);
1418                         }
1419                         unlink(filename);
1420                         exit(retcode);
1421                 }
1422
1423                 if (grandchildpid > 0) {
1424                         exit(0);
1425                 }
1426         }
1427
1428         if (childpid > 0) {
1429                 int retcode;
1430
1431                 waitpid(childpid, &retcode, 0);
1432                 return retcode;
1433         }
1434
1435         return -1;
1436 }
1437
1438
1439 /*
1440  * View an image attached to a message
1441  */
1442 void image_view(CtdlIPC *ipc, unsigned long msg)
1443 {
1444         struct parts *ptr = last_message_parts;
1445         char part[SIZ];
1446         int found = 0;
1447
1448         /* Run through available parts */
1449         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1450                 if ((!strcasecmp(ptr->disposition, "attachment")
1451                    || !strcasecmp(ptr->disposition, "inline"))
1452                    && !strncmp(ptr->mimetype, "image/", 6)) {
1453                         found++;
1454                         if (found == 1) {
1455                                 strcpy(part, ptr->number);
1456                         }
1457                 }
1458         }
1459
1460         while (found > 0) {
1461                 if (found > 1)
1462                         strprompt("View which part (0 when done)", part, SIZ-1);
1463                 found = -found;
1464                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1465                         if ((!strcasecmp(ptr->disposition, "attachment")
1466                            || !strcasecmp(ptr->disposition, "inline"))
1467                            && !strncmp(ptr->mimetype, "image/", 6)
1468                            && !strcasecmp(ptr->number, part)) {
1469                                 char tmp[PATH_MAX];
1470                                 char buf[SIZ];
1471                                 void *file = NULL; /* The downloaded file */
1472                                 int r;
1473
1474                                 /* view image */
1475                                 found = -found;
1476                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1477                                 if (r / 100 != 2) {
1478                                         scr_printf("%s\n", buf);
1479                                 } else {
1480                                         size_t len;
1481
1482                                         len = (size_t)extract_long(buf, 0);
1483                                         progress(ipc, len, len);
1484                                         scr_flush();
1485                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1486                                         strcat(tmp, ptr->filename);
1487                                         save_buffer(file, len, tmp);
1488                                         free(file);
1489                                         do_image_view(tmp);
1490                                 }
1491                                 break;
1492                         }
1493                 }
1494                 if (found == 1)
1495                         break;
1496         }
1497 }
1498
1499
1500 /*
1501  * Read the messages in the current room
1502  */
1503 void readmsgs(CtdlIPC *ipc,
1504         enum MessageList c,             /* see listing in citadel_ipc.h */
1505         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1506         int q           /* Number of msgs to read (if c==3) */
1507 ) {
1508         int a, e, f, g, start;
1509         int savedpos;
1510         int hold_sw = 0;
1511         char arcflag = 0;
1512         char quotflag = 0;
1513         int hold_color = 0;
1514         char prtfile[PATH_MAX];
1515         char pagin;
1516         char cmd[SIZ];
1517         char targ[ROOMNAMELEN];
1518         char filename[PATH_MAX];
1519         char save_to[PATH_MAX];
1520         void *attachment = NULL;        /* Downloaded attachment */
1521         FILE *dest = NULL;              /* Alternate destination other than screen */
1522         int r;                          /* IPC response code */
1523         static int att_seq = 0;         /* Attachment download sequence number */
1524         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1525
1526         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1527
1528         if (msg_arr) {
1529                 free(msg_arr);
1530                 msg_arr = NULL;
1531         }
1532         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1533         if (r / 100 != 1) {
1534                 scr_printf("%s\n", cmd);
1535         } else {
1536                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1537                         ;
1538         }
1539
1540         if (num_msgs == 0) {    /* TODO look at this later */
1541                 if (c == LastMessages) return;
1542                 scr_printf("*** There are no ");
1543                 if (c == NewMessages) scr_printf("new ");
1544                 if (c == OldMessages) scr_printf("old ");
1545                 scr_printf("messages in this room.\n");
1546                 return;
1547         }
1548
1549         /* this loop cycles through each message... */
1550         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1551         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1552                 while (msg_arr[a] == 0L) {
1553                         a = a + rdir;
1554                         if ((a == num_msgs) || (a == (-1)))
1555                                 return;
1556                 }
1557
1558 RAGAIN:         pagin = ((arcflag == 0)
1559                          && (quotflag == 0)
1560                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1561
1562                 /* If we're doing a quote, set the screenwidth to 72 */
1563                 if (quotflag) {
1564                         hold_sw = screenwidth;
1565                         screenwidth = 72;
1566                 }
1567
1568                 /* If printing or archiving, set the screenwidth to 80 */
1569                 if (arcflag) {
1570                         hold_sw = screenwidth;
1571                         screenwidth = 80;
1572                 }
1573
1574                 /* clear parts list */
1575                 free_parts(last_message_parts);
1576                 last_message_parts = NULL;
1577
1578                 /* now read the message... */
1579                 e = read_message(ipc, msg_arr[a], pagin, dest);
1580
1581                 /* ...and set the screenwidth back if we have to */
1582                 if ((quotflag) || (arcflag)) {
1583                         screenwidth = hold_sw;
1584                 }
1585 RMSGREAD:
1586                 highest_msg_read = msg_arr[a];
1587                 if (quotflag) {
1588                         fclose(dest);
1589                         dest = NULL;
1590                         quotflag = 0;
1591                         enable_color = hold_color;
1592                         process_quote();
1593                         e = 'r';
1594                         goto DONE_QUOTING;
1595                 }
1596                 if (arcflag) {
1597                         fclose(dest);
1598                         dest = NULL;
1599                         arcflag = 0;
1600                         enable_color = hold_color;
1601                         f = fork();
1602                         if (f == 0) {
1603                                 if (freopen(prtfile, "r", stdin) == NULL) {
1604                                         /* we probably should handle the error condition here */
1605                                 }
1606                                 stty_ctdl(SB_RESTORE);
1607                                 ka_system(printcmd);
1608                                 stty_ctdl(SB_NO_INTR);
1609                                 unlink(prtfile);
1610                                 exit(0);
1611                         }
1612                         if (f > 0)
1613                                 do {
1614                                         g = wait(NULL);
1615                                 } while ((g != f) && (g >= 0));
1616                         scr_printf("Message printed.\n");
1617                 }
1618                 if (rc_alt_semantics && c == 1) {
1619                         char buf[SIZ];
1620
1621                         r = CtdlIPCSetMessageSeen(ipc, msg_arr[a], 1, buf);
1622                 }
1623                 if (e == SIGQUIT)
1624                         return;
1625                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1626                         && (((room_flags & QR_MAILBOX) == 0)
1627                         || (rc_force_mail_prompts == 0))) {
1628                         e = 'n';
1629                 } else {
1630                         color(DIM_WHITE);
1631                         scr_printf("(");
1632                         color(BRIGHT_WHITE);
1633                         scr_printf("%d", num_msgs - a - 1);
1634                         color(DIM_WHITE);
1635                         scr_printf(") ");
1636
1637                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1638                         if (rc_url_cmd[0] && num_urls)
1639                                 keyopt("<U>RLview ");
1640                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1641                                 keyopt("<I>mages ");
1642                         keyopt("<?>help -> ");
1643
1644                         do {
1645                                 e = (inkey() & 127);
1646                                 e = tolower(e);
1647 /* return key same as <N> */ if (e == 10)
1648                                         e = 'n';
1649 /* space key same as <N> */ if (e == 32)
1650                                         e = 'n';
1651 /* del/move for aides only */
1652                                     if (  (!is_room_aide)
1653                                        && ((room_flags & QR_MAILBOX) == 0)
1654                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1655                                        ) {
1656                                         if ((e == 'd') || (e == 'm'))
1657                                                 e = 0;
1658                                 }
1659 /* print only if available */
1660                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1661                                         e = 0;
1662 /* can't file if not allowed */
1663                                     if ((e == 'f')
1664                                         && (rc_allow_attachments == 0))
1665                                         e = 0;
1666 /* link only if browser avail*/
1667                                     if ((e == 'u')
1668                                         && (IsEmptyStr(rc_url_cmd)))
1669                                         e = 0;
1670                                 if ((e == 'i')
1671                                         && (IsEmptyStr(imagecmd) || !has_images))
1672                                         e = 0;
1673                         } while ((e != 'a') && (e != 'n') && (e != 's')
1674                                  && (e != 'd') && (e != 'm') && (e != 'p')
1675                                  && (e != 'q') && (e != 'b') && (e != 'h')
1676                                  && (e != 'r') && (e != 'f') && (e != '?')
1677                                  && (e != 'u') && (e != 'c') && (e != 'y')
1678                                  && (e != 'i') && (e != 'o') );
1679                         switch (e) {
1680                         case 's':
1681                                 scr_printf("Stop");
1682                                 break;
1683                         case 'a':
1684                                 scr_printf("Again");
1685                                 break;
1686                         case 'd':
1687                                 scr_printf("Delete");
1688                                 break;
1689                         case 'm':
1690                                 scr_printf("Move");
1691                                 break;
1692                         case 'c':
1693                                 scr_printf("Copy");
1694                                 break;
1695                         case 'n':
1696                                 scr_printf("Next");
1697                                 break;
1698                         case 'p':
1699                                 scr_printf("Print");
1700                                 break;
1701                         case 'q':
1702                                 scr_printf("reply Quoted");
1703                                 break;
1704                         case 'b':
1705                                 scr_printf("Back");
1706                                 break;
1707                         case 'h':
1708                                 scr_printf("Header");
1709                                 break;
1710                         case 'r':
1711                                 scr_printf("Reply");
1712                                 break;
1713                         case 'o':
1714                                 scr_printf("Open attachments");
1715                                 break;
1716                         case 'f':
1717                                 scr_printf("File");
1718                                 break;
1719                         case 'u':
1720                                 scr_printf("URL's");
1721                                 break;
1722                         case 'y':
1723                                 scr_printf("mY next");
1724                                 break;
1725                         case 'i':
1726                                 break;
1727                         case '?':
1728                                 scr_printf("? <help>");
1729                                 break;
1730                         }
1731                         if (userflags & US_DISAPPEAR || e == 'i')
1732                                 scr_printf("\r%79s\r", "");
1733                         else
1734                                 scr_printf("\n");
1735                 }
1736 DONE_QUOTING:   switch (e) {
1737                 case '?':
1738                         scr_printf("Options available here:\n"
1739                                 " ?  Help (prints this message)\n"
1740                                 " S  Stop reading immediately\n"
1741                                 " A  Again (repeats last message)\n"
1742                                 " N  Next (continue with next message)\n"
1743                                 " Y  My Next (continue with next message you authored)\n"
1744                                 " B  Back (go back to previous message)\n");
1745                         if (  (is_room_aide)
1746                            || (room_flags & QR_MAILBOX)
1747                            || (room_flags2 & QR2_COLLABDEL)
1748                         ) {
1749                                 scr_printf(" D  Delete this message\n"
1750                                         " M  Move message to another room\n");
1751                         }
1752                         scr_printf(" C  Copy message to another room\n");
1753                         if (!IsEmptyStr(printcmd))
1754                                 scr_printf(" P  Print this message\n");
1755                         scr_printf(
1756                                 " Q  Reply to this message, quoting portions of it\n"
1757                                 " H  Headers (display message headers only)\n");
1758                         if (is_mail)
1759                                 scr_printf(" R  Reply to this message\n");
1760                         if (rc_allow_attachments) {
1761                                 scr_printf(" O  (Open attachments)\n");
1762                                 scr_printf(" F  (save attachments to a File)\n");
1763                         }
1764                         if (!IsEmptyStr(rc_url_cmd))
1765                                 scr_printf(" U  (list URL's for display)\n");
1766                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1767                                 scr_printf(" I  Image viewer\n");
1768                         scr_printf("\n");
1769                         goto RMSGREAD;
1770                 case 'p':
1771                         scr_flush();
1772                         dest = fopen(prtfile, "w");
1773                         arcflag = 1;
1774                         hold_color = enable_color;
1775                         enable_color = 0;
1776                         goto RAGAIN;
1777                 case 'q':
1778                         scr_flush();
1779                         dest = fopen(temp2, "w");
1780                         quotflag = 1;
1781                         hold_color = enable_color;
1782                         enable_color = 0;
1783                         goto RAGAIN;
1784                 case 's':
1785                         return;
1786                 case 'a':
1787                         goto RAGAIN;
1788                 case 'b':
1789                         a = a - (rdir * 2);
1790                         break;
1791                 case 'm':
1792                 case 'c':
1793                         newprompt("Enter target room: ",
1794                                   targ, ROOMNAMELEN - 1);
1795                         if (!IsEmptyStr(targ)) {
1796                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1797                                                        msg_arr[a], targ, cmd);
1798                                 scr_printf("%s\n", cmd);
1799                                 if (r / 100 == 2)
1800                                         msg_arr[a] = 0L;
1801                         } else {
1802                                 goto RMSGREAD;
1803                         }
1804                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1805                                 goto RMSGREAD;  /* the logic here sucks */
1806                         break;
1807                 case 'o':
1808                 case 'f':
1809                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1810                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1811                                         filename, &attachment, progress, cmd);
1812                         if (r / 100 != 2) {
1813                                 scr_printf("%s\n", cmd);
1814                         } else {
1815                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1816                                 /*
1817                                  * Part 1 won't have a filename; use the
1818                                  * subject of the message instead. IO
1819                                  */
1820                                 if (IsEmptyStr(filename)) {
1821                                         strcpy(filename, reply_subject);
1822                                 }
1823                                 if (e == 'o') {         /* open attachment */
1824                                         mkdir(tempdir, 0700);
1825                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1826                                                 tempdir,
1827                                                 ++att_seq,
1828                                                 filename);
1829                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1830                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1831                                         rv = system(cmd);
1832                                         if (rv != 0)
1833                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1834                                 }
1835                                 else {                  /* save attachment to disk */
1836                                         destination_directory(save_to, filename);
1837                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1838                                 }
1839                         }
1840                         if (attachment) {
1841                                 free(attachment);
1842                                 attachment = NULL;
1843                         }
1844                         goto RMSGREAD;
1845                 case 'd':
1846                         scr_printf("*** Delete this message? ");
1847                         if (yesno() == 1) {
1848                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1849                                 scr_printf("%s\n", cmd);
1850                                 if (r / 100 == 2)
1851                                         msg_arr[a] = 0L;
1852                         } else {
1853                                 goto RMSGREAD;
1854                         }
1855                         break;
1856                 case 'h':
1857                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1858                         goto RMSGREAD;
1859                 case 'r':
1860                         savedpos = num_msgs;
1861                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1862                         num_msgs = savedpos;
1863                         goto RMSGREAD;
1864                 case 'u':
1865                         list_urls(ipc);
1866                         goto RMSGREAD;
1867                 case 'i':
1868                         image_view(ipc, msg_arr[a]);
1869                         goto RMSGREAD;
1870             case 'y':
1871           { /* hack hack hack */
1872             /* find the next message by me, stay here if we find nothing */
1873             int finda;
1874             int lasta = a;
1875             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1876               {
1877                 /* This is repetitively dumb, but that's what computers are for.
1878                    We have to load up messages until we find one by us */
1879                 char buf[SIZ];
1880                 int founda = 0;
1881                 struct ctdlipcmessage *msg = NULL;
1882
1883                 /* read the header so we can get 'from=' */
1884                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1885                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1886                         a = lasta; /* meesa current */
1887                         founda = 1;
1888                 }
1889
1890                 free(msg);
1891
1892                 if (founda)
1893                         break; /* for */
1894                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1895               } /* for */
1896           } /* case 'y' */
1897       } /* switch */
1898         }                       /* end for loop */
1899 }                               /* end read routine */
1900
1901
1902
1903
1904 /*
1905  * View and edit a system message
1906  */
1907 void edit_system_message(CtdlIPC *ipc, char *which_message)
1908 {
1909         char desc[SIZ];
1910         char read_cmd[SIZ];
1911         char write_cmd[SIZ];
1912
1913         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1914         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1915         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1916         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1917 }
1918
1919
1920
1921
1922 /*
1923  * Verify the message base
1924  */
1925 void check_message_base(CtdlIPC *ipc)
1926 {
1927         char buf[SIZ];
1928         char *transcript = NULL;
1929         int r;          /* IPC response code */
1930
1931         scr_printf
1932             ("Please read the documentation before running this command.\n"
1933             "Having done so, do you still want to check the message base? ");
1934         if (yesno() == 0)
1935                 return;
1936
1937         r = CtdlIPCMessageBaseCheck(ipc, &transcript, buf);
1938         if (r / 100 != 1) {
1939                 scr_printf("%s\n", buf);
1940                 return;
1941         }
1942
1943         while (transcript && !IsEmptyStr(transcript)) {
1944                 extract_token(buf, transcript, 0, '\n', sizeof buf);
1945                 remove_token(transcript, 0, '\n');
1946                 scr_printf("%s\n", buf);
1947         }
1948         if (transcript) free(transcript);
1949         return;
1950 }
1951
1952
1953 /*
1954  * Loads the contents of a file into memory.  Caller must free the allocated
1955  * memory.
1956  */
1957 char *load_message_from_file(FILE *src)
1958 {
1959         size_t i;
1960         size_t got = 0;
1961         char *dest = NULL;
1962
1963         fseek(src, 0, SEEK_END);
1964         i = ftell(src);
1965         rewind(src);
1966
1967         dest = (char *)calloc(1, i + 1);
1968         if (!dest)
1969                 return NULL;
1970
1971         while (got < i) {
1972                 size_t g;
1973
1974                 g = fread(dest + got, 1, i - got, src);
1975                 got += g;
1976                 if (g < i - got) {
1977                         /* Interrupted system call, keep going */
1978                         if (errno == EINTR)
1979                                 continue;
1980                         /* At this point we have either EOF or error */
1981                         i = got;
1982                         break;
1983                 }
1984                 dest[i] = 0;
1985         }
1986
1987         return dest;
1988 }