textclient/src/messages.c

   1 /*
   2  * Text client functions for reading and writing of messages
   3  *
   4  * Copyright (c) 1987-2018 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <sys/types.h>
  19 #include <fcntl.h>
  20 #include <stdio.h>
  21 #include <ctype.h>
  22 #include <string.h>
  23 #include <signal.h>
  24 #include <errno.h>
  25 #include <limits.h>
  26 #include <sys/wait.h>
  27 #include <sys/stat.h>
  28
  29 #if TIME_WITH_SYS_TIME
  30 # include <sys/time.h>
  31 # include <time.h>
  32 #else
  33 # if HAVE_SYS_TIME_H
  34 #  include <sys/time.h>
  35 # else
  36 #  include <time.h>
  37 # endif
  38 #endif
  39
  40 #ifdef HAVE_PTHREAD_H
  41 #include <pthread.h>
  42 #endif
  43
  44 #include <stdarg.h>
  45 #include <libcitadel.h>
  46 #include "citadel_ipc.h"
  47 #include "citadel_decls.h"
  48 #include "messages.h"
  49 #include "commands.h"
  50 #include "tuiconfig.h"
  51 #include "rooms.h"
  52 #include "screen.h"
  53
  54 #define MAXWORDBUF SIZ
  55 #define NO_REPLY_TO     "nobody ... xxxxxx"
  56
  57 char reply_to[SIZ];
  58 char reply_subject[SIZ];
  59 char reply_references[SIZ];
  60 char reply_inreplyto[SIZ];
  61
  62 struct cittext {
  63         struct cittext *next;
  64         char text[MAXWORDBUF];
  65 };
  66
  67 void stty_ctdl(int cmd);
  68 int haschar(const char *st, int ch);
  69 int file_checksum(char *filename);
  70 void progress(CtdlIPC* ipc, unsigned long curr, unsigned long cmax);
  71
  72 unsigned long *msg_arr = NULL;
  73 int msg_arr_size = 0;
  74 int num_msgs;
  75 extern char room_name[];
  76 extern char tempdir[];
  77 extern unsigned room_flags;
  78 extern unsigned room_flags2;
  79 extern int entmsg_ok;
  80 extern long highest_msg_read;
  81 extern char temp[];
  82 extern char temp2[];
  83 extern int screenwidth;
  84 extern int screenheight;
  85 extern long maxmsgnum;
  86 extern char is_mail;
  87 extern char is_aide;
  88 extern char is_room_aide;
  89 extern char fullname[];
  90 extern char axlevel;
  91 extern unsigned userflags;
  92 extern char sigcaught;
  93 extern char printcmd[];
  94 extern int rc_allow_attachments;
  95 extern int rc_display_message_numbers;
  96 extern int rc_force_mail_prompts;
  97 extern int editor_pid;
  98 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
  99 int num_urls = 0;
 100 char urls[MAXURLS][SIZ];
 101 char imagecmd[SIZ];
 102 int has_images = 0;                             /* Current msg has images */
 103 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 104
 105
 106
 107 void ka_sigcatch(int signum)
 108 {
 109         alarm(S_KEEPALIVE);
 110         signal(SIGALRM, ka_sigcatch);
 111         CtdlIPCNoop(ipc_for_signal_handlers);
 112 }
 113
 114
 115 /*
 116  * server keep-alive version of wait() (needed for external editor)
 117  */
 118 pid_t ka_wait(int *kstatus)
 119 {
 120         pid_t p;
 121
 122         alarm(S_KEEPALIVE);
 123         signal(SIGALRM, ka_sigcatch);
 124         do {
 125                 errno = 0;
 126                 p = wait(kstatus);
 127         } while (errno == EINTR);
 128         signal(SIGALRM, SIG_IGN);
 129         alarm(0);
 130         return (p);
 131 }
 132
 133
 134 /*
 135  * version of system() that uses ka_wait()
 136  */
 137 int ka_system(char *shc)
 138 {
 139         pid_t childpid;
 140         pid_t waitpid;
 141         int retcode;
 142
 143         childpid = fork();
 144         if (childpid < 0) {
 145                 color(BRIGHT_RED);
 146                 perror("Cannot fork");
 147                 color(DIM_WHITE);
 148                 return ((pid_t) childpid);
 149         }
 150
 151         if (childpid == 0) {
 152                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 153                 exit(127);
 154         }
 155
 156         if (childpid > 0) {
 157                 do {
 158                         waitpid = ka_wait(&retcode);
 159                 } while (waitpid != childpid);
 160                 return (retcode);
 161         }
 162
 163         return (-1);
 164 }
 165
 166
 167
 168 /*
 169  * add a newline to the buffer...
 170  */
 171 void add_newline(struct cittext *textlist)
 172 {
 173         struct cittext *ptr;
 174
 175         ptr = textlist;
 176         while (ptr->next != NULL)
 177                 ptr = ptr->next;
 178
 179         while (ptr->text[strlen(ptr->text) - 1] == 32)
 180                 ptr->text[strlen(ptr->text) - 1] = 0;
 181         /* strcat(ptr->text,"\n"); */
 182
 183         ptr->next = (struct cittext *)
 184             malloc(sizeof(struct cittext));
 185         ptr = ptr->next;
 186         ptr->next = NULL;
 187         strcpy(ptr->text, "");
 188 }
 189
 190
 191 /*
 192  * add a word to the buffer...
 193  */
 194 void add_word(struct cittext *textlist, char *wordbuf)
 195 {
 196         struct cittext *ptr;
 197
 198         ptr = textlist;
 199         while (ptr->next != NULL)
 200                 ptr = ptr->next;
 201
 202         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 203                 ptr->next = (struct cittext *)
 204                     malloc(sizeof(struct cittext));
 205                 ptr = ptr->next;
 206                 ptr->next = NULL;
 207                 strcpy(ptr->text, "");
 208         }
 209
 210         strcat(ptr->text, wordbuf);
 211         strcat(ptr->text, " ");
 212 }
 213
 214
 215 /*
 216  * begin editing of an opened file pointed to by fp
 217  */
 218 void citedit(FILE *fp)
 219 {
 220         int a, prev, finished, b, last_space;
 221         int appending = 0;
 222         struct cittext *textlist = NULL;
 223         struct cittext *ptr;
 224         char wordbuf[MAXWORDBUF];
 225         int rv = 0;
 226
 227         /* first, load the text into the buffer */
 228         fseek(fp, 0L, 0);
 229         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 230         textlist->next = NULL;
 231         strcpy(textlist->text, "");
 232
 233         strcpy(wordbuf, "");
 234         prev = (-1);
 235         while (a = getc(fp), a >= 0) {
 236                 appending = 1;
 237                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 238                         add_word(textlist, wordbuf);
 239                         strcpy(wordbuf, "");
 240                         if ((prev == 13) || (prev == 10)) {
 241                                 add_word(textlist, "\n");
 242                                 add_newline(textlist);
 243                                 add_word(textlist, "");
 244                         }
 245                 } else {
 246                         wordbuf[strlen(wordbuf) + 1] = 0;
 247                         wordbuf[strlen(wordbuf)] = a;
 248                 }
 249                 if (strlen(wordbuf) + 3 > screenwidth) {
 250                         add_word(textlist, wordbuf);
 251                         strcpy(wordbuf, "");
 252                 }
 253                 prev = a;
 254         }
 255
 256         /* get text */
 257         finished = 0;
 258         prev = (appending ? 13 : (-1));
 259         strcpy(wordbuf, "");
 260         async_ka_start();
 261         do {
 262                 a = inkey();
 263                 if (a == 10)
 264                         a = 13;
 265                 if (a == 9)
 266                         a = 32;
 267                 if (a == 127)
 268                         a = 8;
 269
 270                 if ((a != 32) && (prev == 13)) {
 271                         add_word(textlist, "\n");
 272                         scr_printf(" ");
 273                 }
 274
 275                 if ((a == 32) && (prev == 13)) {
 276                         add_word(textlist, "\n");
 277                         add_newline(textlist);
 278                 }
 279
 280                 if (a == 8) {
 281                         if (!IsEmptyStr(wordbuf)) {
 282                                 wordbuf[strlen(wordbuf) - 1] = 0;
 283                                 scr_putc(8);
 284                                 scr_putc(32);
 285                                 scr_putc(8);
 286                         }
 287                 } else if (a == 23) {
 288                         do {
 289                                 wordbuf[strlen(wordbuf) - 1] = 0;
 290                                 scr_putc(8);
 291                                 scr_putc(32);
 292                                 scr_putc(8);
 293                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 294                 } else if (a == 13) {
 295                         scr_printf("\n");
 296                         if (IsEmptyStr(wordbuf))
 297                                 finished = 1;
 298                         else {
 299                                 for (b = 0; b < strlen(wordbuf); ++b)
 300                                         if (wordbuf[b] == 32) {
 301                                                 wordbuf[b] = 0;
 302                                                 add_word(textlist,
 303                                                          wordbuf);
 304                                                 strcpy(wordbuf,
 305                                                        &wordbuf[b + 1]);
 306                                                 b = 0;
 307                                         }
 308                                 add_word(textlist, wordbuf);
 309                                 strcpy(wordbuf, "");
 310                         }
 311                 } else {
 312                         scr_putc(a);
 313                         wordbuf[strlen(wordbuf) + 1] = 0;
 314                         wordbuf[strlen(wordbuf)] = a;
 315                 }
 316                 if ((strlen(wordbuf) + 3) > screenwidth) {
 317                         last_space = (-1);
 318                         for (b = 0; b < strlen(wordbuf); ++b)
 319                                 if (wordbuf[b] == 32)
 320                                         last_space = b;
 321                         if (last_space >= 0) {
 322                                 for (b = 0; b < strlen(wordbuf); ++b)
 323                                         if (wordbuf[b] == 32) {
 324                                                 wordbuf[b] = 0;
 325                                                 add_word(textlist,
 326                                                          wordbuf);
 327                                                 strcpy(wordbuf,
 328                                                        &wordbuf[b + 1]);
 329                                                 b = 0;
 330                                         }
 331                                 for (b = 0; b < strlen(wordbuf); ++b) {
 332                                         scr_putc(8);
 333                                         scr_putc(32);
 334                                         scr_putc(8);
 335                                 }
 336                                 scr_printf("\n%s", wordbuf);
 337                         } else {
 338                                 add_word(textlist, wordbuf);
 339                                 strcpy(wordbuf, "");
 340                                 scr_printf("\n");
 341                         }
 342                 }
 343                 prev = a;
 344         } while (finished == 0);
 345         async_ka_end();
 346
 347         /* write the buffer back to disk */
 348         fseek(fp, 0L, 0);
 349         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 350                 fprintf(fp, "%s", ptr->text);
 351         }
 352         putc(10, fp);
 353         fflush(fp);
 354         rv = ftruncate(fileno(fp), ftell(fp));
 355         if (rv < 0)
 356                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 357
 358
 359         /* and deallocate the memory we used */
 360         while (textlist != NULL) {
 361                 ptr = textlist->next;
 362                 free(textlist);
 363                 textlist = ptr;
 364         }
 365 }
 366
 367
 368 /*
 369  * Free the struct parts
 370  */
 371 void free_parts(struct parts *p)
 372 {
 373         struct parts *a_part = p;
 374
 375         while (a_part) {
 376                 struct parts *q;
 377
 378                 q = a_part;
 379                 a_part = a_part->next;
 380                 free(q);
 381         }
 382 }
 383
 384
 385 /*
 386  * This is a mini RFC2047 decoder.
 387  * It only handles strings encoded from UTF-8 as Quoted-printable.
 388  */
 389 void mini_2047_decode(char *s) {
 390         if (!s) return;
 391
 392         char *qstart = strstr(s, "=?UTF-8?Q?");
 393         if (!qstart) return;
 394
 395         char *qend = strstr(s, "?=");
 396         if (!qend) return;
 397
 398         if (qend <= qstart) return;
 399
 400         strcpy(qstart, &qstart[10]);
 401         qend -= 10;
 402
 403         char *p = qstart;
 404         while (p < qend) {
 405
 406                 if (p[0] == '=') {
 407
 408                         char ch[3];
 409                         ch[0] = p[1];
 410                         ch[1] = p[2];
 411                         ch[2] = p[3];
 412                         int c;
 413                         sscanf(ch, "%02x", &c);
 414                         p[0] = c;
 415                         strcpy(&p[1], &p[3]);
 416                         qend -= 2;
 417                 }
 418
 419                 if (p[0] == '_') {
 420                         p[0] = ' ';
 421                 }
 422
 423                 ++p;
 424         }
 425
 426         strcpy(qend, &qend[2]);
 427 }
 428
 429 /*
 430  * Read a message from the server
 431  */
 432 int read_message(CtdlIPC *ipc,
 433         long num,   /* message number */
 434         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 435         FILE *dest) /* Destination file, NULL for screen */
 436 {
 437         char buf[SIZ];
 438         char now[256];
 439         int format_type = 0;
 440         int fr = 0;
 441         int nhdr = 0;
 442         struct ctdlipcmessage *message = NULL;
 443         int r;                          /* IPC response code */
 444         char *converted_text = NULL;
 445         char *lineptr;
 446         char *nextline;
 447         char *searchptr;
 448         int i;
 449         char ch;
 450         int linelen;
 451         int final_line_is_blank = 0;
 452
 453         has_images = 0;
 454
 455         sigcaught = 0;
 456         stty_ctdl(1);
 457
 458         strcpy(reply_to, NO_REPLY_TO);
 459         strcpy(reply_subject, "");
 460         strcpy(reply_references, "");
 461         strcpy(reply_inreplyto, "");
 462
 463         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 464         if (r / 100 != 1) {
 465                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 466                 stty_ctdl(0);
 467                 free(message->text);
 468                 free_parts(message->attachments);
 469                 free(message);
 470                 return (0);
 471         }
 472
 473         if (dest) {
 474                 fprintf(dest, "\n ");
 475         } else {
 476                 scr_printf("\n");
 477                 if (pagin != 2)
 478                         scr_printf(" ");
 479         }
 480         if (pagin == 1 && !dest) {
 481                 color(BRIGHT_CYAN);
 482         }
 483
 484         /* View headers only */
 485         if (pagin == 2) {
 486                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 487                                 message->nhdr ? "yes" : "no",
 488                                 message->author, message->type,
 489                                 message->msgid);
 490                 if (!IsEmptyStr(message->subject)) {
 491                         scr_printf("subj=%s\n", message->subject);
 492                 }
 493                 if (!IsEmptyStr(message->email)) {
 494                         scr_printf("rfca=%s\n", message->email);
 495                 }
 496                 scr_printf("room=%s\ntime=%s",
 497                         message->room,
 498                         asctime(localtime(&message->time))
 499                 );
 500                 if (!IsEmptyStr(message->recipient)) {
 501                         scr_printf("rcpt=%s\n", message->recipient);
 502                 }
 503                 if (message->attachments) {
 504                         struct parts *ptr;
 505
 506                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 507                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 508                                         ptr->name, ptr->filename, ptr->number,
 509                                         ptr->disposition, ptr->mimetype,
 510                                         ptr->length
 511                                 );
 512                         }
 513                 }
 514                 scr_printf("\n");
 515                 stty_ctdl(0);
 516                 free(message->text);
 517                 free_parts(message->attachments);
 518                 free(message);
 519                 return (0);
 520         }
 521
 522         if (rc_display_message_numbers) {
 523                 if (dest) {
 524                         fprintf(dest, "[#%s] ", message->msgid);
 525                 } else {
 526                         color(DIM_WHITE);
 527                         scr_printf("[");
 528                         color(BRIGHT_WHITE);
 529                         scr_printf("#%s", message->msgid);
 530                         color(DIM_WHITE);
 531                         scr_printf("] ");
 532                 }
 533         }
 534         if (nhdr == 1 && !is_room_aide) {
 535                 if (dest) {
 536                         fprintf(dest, " ****");
 537                 } else {
 538                         scr_printf(" ****");
 539                 }
 540         } else {
 541                 struct tm thetime;
 542                 localtime_r(&message->time, &thetime);
 543                 strftime(now, sizeof now, "%F %R", &thetime);
 544                 if (dest) {
 545                         fprintf(dest, "%s from %s ", now, message->author);
 546                         if (!IsEmptyStr(message->email)) {
 547                                 fprintf(dest, "<%s> ", message->email);
 548                         }
 549                 } else {
 550                         color(BRIGHT_CYAN);
 551                         scr_printf("%s ", now);
 552                         color(DIM_WHITE);
 553                         scr_printf("from ");
 554                         color(BRIGHT_CYAN);
 555                         scr_printf("%s ", message->author);
 556                         if (!IsEmptyStr(message->email)) {
 557                                 color(DIM_WHITE);
 558                                 scr_printf("<");
 559                                 color(BRIGHT_BLUE);
 560                                 scr_printf("%s", message->email);
 561                                         color(DIM_WHITE);
 562                                 scr_printf("> ");
 563                         }
 564                 }
 565                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 566                         if (dest) {
 567                                 fprintf(dest, "in %s> ", message->room);
 568                         } else {
 569                                 color(DIM_WHITE);
 570                                 scr_printf("in ");
 571                                 color(BRIGHT_MAGENTA);
 572                                 scr_printf("%s> ", message->room);
 573                         }
 574                 }
 575                 if (!IsEmptyStr(message->recipient)) {
 576                         if (dest) {
 577                                 fprintf(dest, "to %s ", message->recipient);
 578                         } else {
 579                                 color(DIM_WHITE);
 580                                 scr_printf("to ");
 581                                 color(BRIGHT_CYAN);
 582                                 scr_printf("%s ", message->recipient);
 583                         }
 584                 }
 585         }
 586
 587         if (dest) {
 588                 fprintf(dest, "\n");
 589         } else {
 590                 scr_printf("\n");
 591         }
 592
 593         /* Set the reply-to address to an Internet e-mail address if possible
 594          */
 595         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 596                 if (!IsEmptyStr(message->author)) {
 597                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 598                 }
 599                 else {
 600                         safestrncpy(reply_to, message->email, sizeof reply_to);
 601                 }
 602         }
 603
 604         /* But if we can't do that, set it to a Citadel address.
 605          */
 606         if (!strcmp(reply_to, NO_REPLY_TO)) {
 607                 safestrncpy(reply_to, message->author, sizeof(reply_to));
 608         }
 609
 610         if (message->msgid != NULL) {
 611                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 612         }
 613
 614         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 615                 safestrncpy(reply_references, message->references, sizeof reply_references);
 616         }
 617
 618         if (message->subject != NULL) {
 619                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 620                 if (!IsEmptyStr(message->subject)) {
 621                         if (dest) {
 622                                 fprintf(dest, "Subject: %s\n", message->subject);
 623                         } else {
 624                                 color(DIM_WHITE);
 625                                 scr_printf("Subject: ");
 626                                 color(BRIGHT_CYAN);
 627                                 mini_2047_decode(message->subject);
 628                                 scr_printf("%s\n", message->subject);
 629                         }
 630                 }
 631         }
 632
 633         if (pagin == 1 && !dest) {
 634                 color(BRIGHT_WHITE);
 635         }
 636
 637         /******* end of header output, start of message text output *******/
 638
 639         /*
 640          * Convert HTML to plain text, formatting for the actual width
 641          * of the client screen.
 642          */
 643         if (!strcasecmp(message->content_type, "text/html")) {
 644                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 645                 if (converted_text != NULL) {
 646                         free(message->text);
 647                         message->text = converted_text;
 648                         format_type = 1;
 649                 }
 650         }
 651
 652         /* Text/plain is a different type */
 653         if (!strcasecmp(message->content_type, "text/plain")) {
 654                 format_type = 1;
 655         }
 656
 657         /* Extract URL's */
 658         static char *urlprefixes[] = {
 659                 "http://",
 660                 "https://",
 661                 "ftp://"
 662         };
 663         int p = 0;
 664         num_urls = 0;   /* Start with a clean slate */
 665         for (p=0; p<(sizeof urlprefixes / sizeof(char *)); ++p) {
 666                 searchptr = message->text;
 667                 while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 668                         searchptr = strstr(searchptr, urlprefixes[p]);
 669                         if (searchptr != NULL) {
 670                                 safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 671                                 for (i = 0; i < strlen(urls[num_urls]); i++) {
 672                                         ch = urls[num_urls][i];
 673                                         if (ch == '>' || ch == '\"' || ch == ')' ||
 674                                             ch == ' ' || ch == '\n') {
 675                                                 urls[num_urls][i] = 0;
 676                                                 break;
 677                                         }
 678                                 }
 679                                 num_urls++;
 680                                 ++searchptr;
 681                         }
 682                 }
 683         }
 684
 685         /*
 686          * Here we go
 687          */
 688         if (format_type == 0) {
 689                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 690         } else {
 691                 /* renderer for text/plain */
 692
 693                 lineptr = message->text;
 694
 695                 do {
 696                         nextline = strchr(lineptr, '\n');
 697                         if (nextline != NULL) {
 698                                 *nextline = 0;
 699                                 ++nextline;
 700                                 if (*nextline == 0) nextline = NULL;
 701                         }
 702
 703                         if (sigcaught == 0) {
 704                                 linelen = strlen(lineptr);
 705                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 706                                         lineptr[--linelen] = 0;
 707                                 }
 708                                 if (dest) {
 709                                         fprintf(dest, "%s\n", lineptr);
 710                                 } else {
 711                                         scr_printf("%s\n", lineptr);
 712                                 }
 713                         }
 714                         if (lineptr[0] == 0) final_line_is_blank = 1;
 715                         else final_line_is_blank = 0;
 716                         lineptr = nextline;
 717                 } while (nextline);
 718                 fr = sigcaught;
 719         }
 720         if (!final_line_is_blank) {
 721                 if (dest) {
 722                         fprintf(dest, "\n");
 723                 }
 724                 else {
 725                         scr_printf("\n");
 726                         fr = sigcaught;
 727                 }
 728         }
 729
 730         /* Enumerate any attachments */
 731         if ( (pagin == 1) && (message->attachments) ) {
 732                 struct parts *ptr;
 733
 734                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 735                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 736                            || (!strcasecmp(ptr->disposition, "inline"))
 737                            || (!strcasecmp(ptr->disposition, ""))
 738                         ) {
 739                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 740                                    && (!IsEmptyStr(ptr->mimetype))
 741                                 ) {
 742                                         color(DIM_WHITE);
 743                                         scr_printf("Part ");
 744                                         color(BRIGHT_MAGENTA);
 745                                         scr_printf("%s", ptr->number);
 746                                         color(DIM_WHITE);
 747                                         scr_printf(": ");
 748                                         color(BRIGHT_CYAN);
 749                                         scr_printf("%s", ptr->filename);
 750                                         color(DIM_WHITE);
 751                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 752                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 753                                                 has_images++;
 754                                         }
 755                                 }
 756                         }
 757                 }
 758         }
 759
 760         /* Save the attachments info for later */
 761         last_message_parts = message->attachments;
 762
 763         /* Now we're done */
 764         free(message->text);
 765         free(message);
 766
 767         if (pagin == 1 && !dest)
 768                 color(DIM_WHITE);
 769         stty_ctdl(0);
 770         return (fr);
 771 }
 772
 773 /*
 774  * replace string function for the built-in editor
 775  */
 776 void replace_string(char *filename, long int startpos)
 777 {
 778         char buf[512];
 779         char srch_str[128];
 780         char rplc_str[128];
 781         FILE *fp;
 782         int a;
 783         long rpos, wpos;
 784         char *ptr;
 785         int substitutions = 0;
 786         long msglen = 0L;
 787         int rv;
 788
 789         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str)-1) );
 790         if (IsEmptyStr(srch_str)) {
 791                 return;
 792         }
 793
 794         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str)-1) );
 795
 796         fp = fopen(filename, "r+");
 797         if (fp == NULL) {
 798                 return;
 799         }
 800
 801         wpos = startpos;
 802         fseek(fp, startpos, 0);
 803         strcpy(buf, "");
 804         while (a = getc(fp), a > 0) {
 805                 ++msglen;
 806                 buf[strlen(buf) + 1] = 0;
 807                 buf[strlen(buf)] = a;
 808                 if (strlen(buf) >= strlen(srch_str)) {
 809                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 810                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 811                                 strcpy(ptr, rplc_str);
 812                                 ++substitutions;
 813                         }
 814                 }
 815                 if (strlen(buf) > 384) {
 816                         rpos = ftell(fp);
 817                         fseek(fp, wpos, 0);
 818                         rv = fwrite((char *) buf, 128, 1, fp);
 819                         if (rv < 0) {
 820                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 821                                 break; /*whoopsi! */
 822                         }
 823                         strcpy(buf, &buf[128]);
 824                         wpos = ftell(fp);
 825                         fseek(fp, rpos, 0);
 826                 }
 827         }
 828         fseek(fp, wpos, 0);
 829         if (!IsEmptyStr(buf)) {
 830                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 831         }
 832         wpos = ftell(fp);
 833         fclose(fp);
 834         rv = truncate(filename, wpos);
 835         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 836 }
 837
 838 /*
 839  * Function to begin composing a new message
 840  */
 841 int client_make_message(CtdlIPC *ipc,
 842                         char *filename,         /* temporary file name */
 843                         char *recipient,        /* NULL if it's not mail */
 844                         int is_anonymous,
 845                         int format_type,
 846                         int mode,
 847                         char *subject,          /* buffer to store subject line */
 848                         int subject_required
 849 ) {
 850         FILE *fp;
 851         int a, b, e_ex_code;
 852         long beg;
 853         char datestr[256];
 854         char header[SIZ];
 855         int cksum = 0;
 856
 857         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 858                 scr_printf("*** No editor available; using built-in editor.\n");
 859                 mode = 0;
 860         }
 861
 862         struct tm thetime;
 863         time_t now = time(NULL);
 864         localtime_r(&now, &thetime);
 865         strftime(datestr, sizeof datestr, "%F %R", &thetime);
 866         header[0] = 0;
 867
 868         if (room_flags & QR_ANONONLY && !recipient) {
 869                 snprintf(header, sizeof header, " ****");
 870         }
 871         else {
 872                 snprintf(header, sizeof header,
 873                         " %s from %s",
 874                         datestr,
 875                         (is_anonymous ? "[anonymous]" : fullname)
 876                         );
 877                 if (!IsEmptyStr(recipient)) {
 878                         size_t tmp = strlen(header);
 879                         snprintf(&header[tmp], sizeof header - tmp,
 880                                 " to %s", recipient);
 881                 }
 882         }
 883         scr_printf("%s\n", header);
 884         if (subject != NULL) if (!IsEmptyStr(subject)) {
 885                 scr_printf("Subject: %s\n", subject);
 886         }
 887
 888         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 889                 newprompt("Subject: ", subject, 70);
 890         }
 891
 892         if (mode == 1) {
 893                 scr_printf("(Press ctrl-d when finished)\n");
 894         }
 895
 896         if (mode == 0) {
 897                 fp = fopen(filename, "r");
 898                 if (fp != NULL) {
 899                         fmout(screenwidth, fp, NULL, NULL, 0);
 900                         beg = ftell(fp);
 901                         if (beg < 0)
 902                                 scr_printf("failed to get stream position %s\n",
 903                                            strerror(errno));
 904                         fclose(fp);
 905                 } else {
 906                         fp = fopen(filename, "w");
 907                         if (fp == NULL) {
 908                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 909                                         filename, strerror(errno)
 910                                 );
 911                         return(1);
 912                         }
 913                         fclose(fp);
 914                 }
 915         }
 916
 917 ME1:    switch (mode) {
 918
 919         case 0:
 920                 fp = fopen(filename, "r+");
 921                 if (fp == NULL) {
 922                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 923                                 filename, strerror(errno)
 924                         );
 925                         return(1);
 926                 }
 927                 citedit(fp);
 928                 fclose(fp);
 929                 goto MECR;
 930
 931         case 1:
 932                 fp = fopen(filename, "a");
 933                 if (fp == NULL) {
 934                         scr_printf("*** Error opening temp file!\n"
 935                                 "    %s: %s\n",
 936                                 filename, strerror(errno));
 937                         return(1);
 938                 }
 939                 do {
 940                         a = inkey();
 941                         if (a == 255)
 942                                 a = 32;
 943                         if (a == 13)
 944                                 a = 10;
 945                         if (a != 4) {
 946                                 putc(a, fp);
 947                                 scr_putc(a);
 948                         }
 949                         if (a == 10)
 950                                 scr_putc(10);
 951                 } while (a != 4);
 952                 fclose(fp);
 953                 break;
 954
 955         case 2:
 956         default:        /* allow 2+ modes */
 957                 e_ex_code = 1;  /* start with a failed exit code */
 958                 stty_ctdl(SB_RESTORE);
 959                 editor_pid = fork();
 960                 cksum = file_checksum(filename);
 961                 if (editor_pid == 0) {
 962                         char tmp[SIZ];
 963
 964                         chmod(filename, 0600);
 965                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 966                         putenv(tmp);
 967                         execlp(editor_path, editor_path, filename, NULL);
 968                         exit(1);
 969                 }
 970                 if (editor_pid > 0)
 971                         do {
 972                                 e_ex_code = 0;
 973                                 b = ka_wait(&e_ex_code);
 974                         } while ((b != editor_pid) && (b >= 0));
 975                 editor_pid = (-1);
 976                 stty_ctdl(0);
 977                 break;
 978         }
 979
 980 MECR:   if (mode >= 2) {
 981                 if (file_checksum(filename) == cksum) {
 982                         scr_printf("*** Aborted message.\n");
 983                         e_ex_code = 1;
 984                 }
 985                 if (e_ex_code == 0) {
 986                         goto MEFIN;
 987                 }
 988                 goto MEABT2;
 989         }
 990
 991         b = keymenu("Entry command (? for options)",
 992                 "<A>bort|"
 993                 "<C>ontinue|"
 994                 "<S>ave message|"
 995                 "<P>rint formatted|"
 996                 "add s<U>bject|"
 997                 "<R>eplace string|"
 998                 "<H>old message"
 999         );
1000
1001         if (b == 'a') goto MEABT;
1002         if (b == 'c') goto ME1;
1003         if (b == 's') goto MEFIN;
1004         if (b == 'p') {
1005                 scr_printf(" %s from %s", datestr, fullname);
1006                 if (!IsEmptyStr(recipient)) {
1007                         scr_printf(" to %s", recipient);
1008                 }
1009                 scr_printf("\n");
1010                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1011                         scr_printf("Subject: %s\n", subject);
1012                 }
1013                 fp = fopen(filename, "r");
1014                 if (fp != NULL) {
1015                         fmout(screenwidth, fp, NULL, NULL, 0);
1016                         beg = ftell(fp);
1017                         if (beg < 0)
1018                                 scr_printf("failed to get stream position %s\n",
1019                                            strerror(errno));
1020                         fclose(fp);
1021                 }
1022                 goto MECR;
1023         }
1024         if (b == 'r') {
1025                 replace_string(filename, 0L);
1026                 goto MECR;
1027         }
1028         if (b == 'h') {
1029                 return (2);
1030         }
1031         if (b == 'u') {
1032                 if (subject != NULL) {
1033                         newprompt("Subject: ", subject, 70);
1034                 }
1035                 goto MECR;
1036         }
1037
1038 MEFIN:  return (0);
1039
1040 MEABT:  scr_printf("Are you sure? ");
1041         if (yesno() == 0) {
1042                 goto ME1;
1043         }
1044 MEABT2: unlink(filename);
1045         return (2);
1046 }
1047
1048
1049 /*
1050  * Make sure there's room in msg_arr[] for at least one more.
1051  */
1052 void check_msg_arr_size(void) {
1053         if ((num_msgs + 1) > msg_arr_size) {
1054                 msg_arr_size += 512;
1055                 msg_arr = realloc(msg_arr,
1056                         ((sizeof(long)) * msg_arr_size) );
1057         }
1058 }
1059
1060
1061 /*
1062  * break_big_lines()  -  break up lines that are >1024 characters
1063  *                       otherwise the server will truncate
1064  */
1065 void break_big_lines(char *msg) {
1066         char *ptr;
1067         char *break_here;
1068
1069         if (msg == NULL) {
1070                 return;
1071         }
1072
1073         ptr = msg;
1074         while (strlen(ptr) > 1000) {
1075                 break_here = strchr(&ptr[900], ' ');
1076                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1077                         break_here = &ptr[999];
1078                 }
1079                 *break_here = '\n';
1080                 ptr = break_here++;
1081         }
1082 }
1083
1084
1085 /*
1086  * entmsg()  -  edit and create a message
1087  *              returns 0 if message was saved
1088  */
1089 int entmsg(CtdlIPC *ipc,
1090                 int is_reply,   /* nonzero if this was a <R>eply command */
1091                 int c,          /* mode */
1092                 int masquerade  /* prompt for a non-default display name? */
1093 ) {
1094         char buf[SIZ];
1095         int a, b;
1096         int need_recp = 0;
1097         int mode;
1098         long highmsg = 0L;
1099         FILE *fp;
1100         char subject[SIZ];
1101         struct ctdlipcmessage message;
1102         unsigned long *msgarr = NULL;
1103         int r;                  /* IPC response code */
1104         int subject_required = 0;
1105
1106         if (!entmsg_ok) {
1107                 scr_printf("You may not enter messages in this type of room.\n");
1108                 return(1);
1109         }
1110
1111         if (c > 0) {
1112                 mode = 1;
1113         }
1114         else {
1115                 mode = 0;
1116         }
1117
1118         strcpy(subject, "");
1119
1120         /*
1121          * First, check to see if we have permission to enter a message in
1122          * this room.  The server will return an error code if we can't.
1123          */
1124         strcpy(message.recipient, "");
1125         strcpy(message.author, "");
1126         strcpy(message.subject, "");
1127         strcpy(message.references, "");
1128         message.text = "";              /* point to "", changes later */
1129         message.anonymous = 0;
1130         message.type = mode;
1131
1132         if (masquerade) {
1133                 newprompt("Display name for this message: ", message.author, 40);
1134         }
1135
1136         if (is_reply) {
1137
1138                 if (!IsEmptyStr(reply_subject)) {
1139                         if (!strncasecmp(reply_subject,
1140                            "Re: ", 3)) {
1141                                 strcpy(message.subject, reply_subject);
1142                         }
1143                         else {
1144                                 snprintf(message.subject,
1145                                         sizeof message.subject,
1146                                         "Re: %s",
1147                                         reply_subject);
1148                         }
1149                 }
1150
1151                 /* Trim down excessively long lists of thread references.  We eliminate the
1152                  * second one in the list so that the thread root remains intact.
1153                  */
1154                 int rrtok = num_tokens(reply_references, '|');
1155                 int rrlen = strlen(reply_references);
1156                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1157                         remove_token(reply_references, 1, '|');
1158                 }
1159
1160                 snprintf(message.references, sizeof message.references, "%s%s%s",
1161                         reply_references,
1162                         (IsEmptyStr(reply_references) ? "" : "|"),
1163                         reply_inreplyto
1164                 );
1165         }
1166
1167         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1168
1169         if (r / 100 != 2 && r / 10 != 57) {
1170                 scr_printf("%s\n", buf);
1171                 return (1);
1172         }
1173
1174         /* Error code 570 is special.  It means that we CAN enter a message
1175          * in this room, but a recipient needs to be specified.
1176          */
1177         need_recp = 0;
1178         if (r / 10 == 57) {
1179                 need_recp = 1;
1180         }
1181
1182         /* If the user is a dumbass, tell them how to type. */
1183         if ((userflags & US_EXPERT) == 0) {
1184                 scr_printf("Entering message.  Word wrap will give you soft linebreaks.  Pressing the\n");
1185                 scr_printf("'enter' key will give you a hard linebreak and an indent.  Press 'enter' twice\n");
1186                 scr_printf("when finished.\n");
1187         }
1188
1189         /* Handle the selection of a recipient, if necessary. */
1190         strcpy(buf, "");
1191         if (need_recp == 1) {
1192                 if (axlevel >= AxProbU) {
1193                         if (is_reply) {
1194                                 strcpy(buf, reply_to);
1195                         } else {
1196                                 newprompt("Enter recipient: ", buf, SIZ-100);
1197                                 if (IsEmptyStr(buf)) {
1198                                         return (1);
1199                                 }
1200                         }
1201                 } else
1202                         strcpy(buf, "sysop");
1203         }
1204         strcpy(message.recipient, buf);
1205
1206         if (room_flags & QR_ANONOPT) {
1207                 scr_printf("Anonymous (Y/N)? ");
1208                 if (yesno() == 1)
1209                         message.anonymous = 1;
1210         }
1211
1212         /* If it's mail, we've got to check the validity of the recipient... */
1213         if (!IsEmptyStr(message.recipient)) {
1214                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1215                 if (r / 100 != 2) {
1216                         scr_printf("%s\n", buf);
1217                         return (1);
1218                 }
1219         }
1220
1221         /* Learn the number of the newest message in in the room, so we can
1222          * tell upon saving whether someone else has posted too.
1223          */
1224         num_msgs = 0;
1225         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1226         if (r / 100 != 1) {
1227                 scr_printf("%s\n", buf);
1228         } else {
1229                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1230                         ;
1231         }
1232
1233         /* Now compose the message... */
1234         if (client_make_message(ipc, temp, message.recipient,
1235            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1236             if (msgarr) free(msgarr);
1237                 return (2);
1238         }
1239
1240         /* Reopen the temp file that was created, so we can send it */
1241         fp = fopen(temp, "r");
1242
1243         if (!fp || !(message.text = load_message_from_file(fp))) {
1244                 scr_printf("*** Internal error while trying to save message!\n"
1245                         "%s: %s\n",
1246                         temp, strerror(errno));
1247                 unlink(temp);
1248                 return(errno);
1249         }
1250
1251         if (fp) fclose(fp);
1252
1253         /* Break lines that are >1024 characters, otherwise the server
1254          * will truncate them.
1255          */
1256         break_big_lines(message.text);
1257
1258         /* Transmit message to the server */
1259         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1260         if (r / 100 != 4) {
1261                 scr_printf("%s\n", buf);
1262                 return (1);
1263         }
1264
1265         /* Yes, unlink it now, so it doesn't stick around if we crash */
1266         unlink(temp);
1267
1268         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1269
1270         if (msgarr) free(msgarr);
1271         msgarr = NULL;
1272         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1273         if (r / 100 != 1) {
1274                 scr_printf("%s\n", buf);
1275         } else {
1276                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1277                         ;
1278         }
1279
1280         /* get new highest message number in room to set lrp for goto... */
1281         maxmsgnum = msgarr[num_msgs - 1];
1282
1283         /* now see if anyone else has posted in here */
1284         b = (-1);
1285         for (a = 0; a < num_msgs; ++a) {
1286                 if (msgarr[a] > highmsg) {
1287                         ++b;
1288                 }
1289         }
1290         if (msgarr) free(msgarr);
1291         msgarr = NULL;
1292
1293         /* In the Mail> room, this algorithm always counts one message
1294          * higher than in public rooms, so we decrement it by one.
1295          */
1296         if (need_recp) {
1297                 --b;
1298         }
1299
1300         if (b == 1) {
1301                 scr_printf("*** 1 additional message has been entered "
1302                         "in this room by another user.\n");
1303         }
1304         else if (b > 1) {
1305                 scr_printf("*** %d additional messages have been entered "
1306                         "in this room by other users.\n", b);
1307         }
1308     free(message.text);
1309
1310         return(0);
1311 }
1312
1313 /*
1314  * Do editing on a quoted file
1315  */
1316 void process_quote(void)
1317 {
1318         FILE *qfile, *tfile;
1319         char buf[128];
1320         int line, qstart, qend;
1321
1322         /* Unlink the second temp file as soon as it's opened, so it'll get
1323          * deleted even if the program dies
1324          */
1325         qfile = fopen(temp2, "r");
1326         unlink(temp2);
1327
1328         /* Display the quotable text with line numbers added */
1329         line = 0;
1330         if (fgets(buf, 128, qfile) == NULL) {
1331                 /* we're skipping a line here */
1332         }
1333         while (fgets(buf, 128, qfile) != NULL) {
1334                 scr_printf("%3d %s", ++line, buf);
1335         }
1336
1337         qstart = intprompt("Begin quoting at", 1, 1, line);
1338         qend = intprompt("  End quoting at", line, qstart, line);
1339
1340         rewind(qfile);
1341         line = 0;
1342         if (fgets(buf, 128, qfile) == NULL) {
1343                 /* we're skipping a line here */
1344         }
1345         tfile = fopen(temp, "w");
1346         while (fgets(buf, 128, qfile) != NULL) {
1347                 if ((++line >= qstart) && (line <= qend))
1348                         fprintf(tfile, " >%s", buf);
1349         }
1350         fprintf(tfile, " \n");
1351         fclose(qfile);
1352         fclose(tfile);
1353         chmod(temp, 0666);
1354 }
1355
1356
1357
1358 /*
1359  * List the URL's which were embedded in the previous message
1360  */
1361 void list_urls(CtdlIPC *ipc)
1362 {
1363         int i;
1364         char cmd[SIZ];
1365         int rv;
1366
1367         if (num_urls == 0) {
1368                 scr_printf("There were no URL's in the previous message.\n\n");
1369                 return;
1370         }
1371
1372         for (i = 0; i < num_urls; ++i) {
1373                 scr_printf("%3d %s\n", i + 1, urls[i]);
1374         }
1375
1376         if ((i = num_urls) != 1)
1377                 i = intprompt("Display which one", 1, 1, num_urls);
1378
1379         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1380         rv = system(cmd);
1381         if (rv != 0)
1382                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1383         scr_printf("\n");
1384 }
1385
1386
1387 /*
1388  * Run image viewer in background
1389  */
1390 int do_image_view(const char *filename)
1391 {
1392         char cmd[SIZ];
1393         pid_t childpid;
1394
1395         snprintf(cmd, sizeof cmd, imagecmd, filename);
1396         childpid = fork();
1397         if (childpid < 0) {
1398                 unlink(filename);
1399                 return childpid;
1400         }
1401
1402         if (childpid == 0) {
1403                 int retcode;
1404                 pid_t grandchildpid;
1405
1406                 grandchildpid = fork();
1407                 if (grandchildpid < 0) {
1408                         return grandchildpid;
1409                 }
1410
1411                 if (grandchildpid == 0) {
1412                         int nullfd;
1413                         int outfd = -1;
1414                         int errfd = -1;
1415
1416                         nullfd = open("/dev/null", O_WRONLY);
1417                         if (nullfd > -1) {
1418                                 dup2(1, outfd);
1419                                 dup2(2, errfd);
1420                                 dup2(nullfd, 1);
1421                                 dup2(nullfd, 2);
1422                         }
1423                         retcode = system(cmd);
1424                         if (nullfd > -1) {
1425                                 dup2(outfd, 1);
1426                                 dup2(errfd, 2);
1427                                 close(nullfd);
1428                         }
1429                         unlink(filename);
1430                         exit(retcode);
1431                 }
1432
1433                 if (grandchildpid > 0) {
1434                         exit(0);
1435                 }
1436         }
1437
1438         if (childpid > 0) {
1439                 int retcode;
1440
1441                 waitpid(childpid, &retcode, 0);
1442                 return retcode;
1443         }
1444
1445         return -1;
1446 }
1447
1448
1449 /*
1450  * View an image attached to a message
1451  */
1452 void image_view(CtdlIPC *ipc, unsigned long msg)
1453 {
1454         struct parts *ptr = last_message_parts;
1455         char part[SIZ];
1456         int found = 0;
1457
1458         /* Run through available parts */
1459         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1460                 if ((!strcasecmp(ptr->disposition, "attachment")
1461                    || !strcasecmp(ptr->disposition, "inline"))
1462                    && !strncmp(ptr->mimetype, "image/", 6)) {
1463                         found++;
1464                         if (found == 1) {
1465                                 strcpy(part, ptr->number);
1466                         }
1467                 }
1468         }
1469
1470         while (found > 0) {
1471                 if (found > 1)
1472                         strprompt("View which part (0 when done)", part, SIZ-1);
1473                 found = -found;
1474                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1475                         if ((!strcasecmp(ptr->disposition, "attachment")
1476                            || !strcasecmp(ptr->disposition, "inline"))
1477                            && !strncmp(ptr->mimetype, "image/", 6)
1478                            && !strcasecmp(ptr->number, part)) {
1479                                 char tmp[PATH_MAX];
1480                                 char buf[SIZ];
1481                                 void *file = NULL; /* The downloaded file */
1482                                 int r;
1483
1484                                 /* view image */
1485                                 found = -found;
1486                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1487                                 if (r / 100 != 2) {
1488                                         scr_printf("%s\n", buf);
1489                                 } else {
1490                                         size_t len;
1491
1492                                         len = (size_t)extract_long(buf, 0);
1493                                         progress(ipc, len, len);
1494                                         scr_flush();
1495                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1496                                         strcat(tmp, ptr->filename);
1497                                         save_buffer(file, len, tmp);
1498                                         free(file);
1499                                         do_image_view(tmp);
1500                                 }
1501                                 break;
1502                         }
1503                 }
1504                 if (found == 1)
1505                         break;
1506         }
1507 }
1508
1509
1510 /*
1511  * Read the messages in the current room
1512  */
1513 void readmsgs(CtdlIPC *ipc,
1514         enum MessageList c,             /* see listing in citadel_ipc.h */
1515         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1516         int q           /* Number of msgs to read (if c==3) */
1517 ) {
1518         int a, e, f, g, start;
1519         int savedpos;
1520         int hold_sw = 0;
1521         char arcflag = 0;
1522         char quotflag = 0;
1523         int hold_color = 0;
1524         char prtfile[PATH_MAX];
1525         char pagin;
1526         char cmd[SIZ];
1527         char targ[ROOMNAMELEN];
1528         char filename[PATH_MAX];
1529         char save_to[PATH_MAX];
1530         void *attachment = NULL;        /* Downloaded attachment */
1531         FILE *dest = NULL;              /* Alternate destination other than screen */
1532         int r;                          /* IPC response code */
1533         static int att_seq = 0;         /* Attachment download sequence number */
1534         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1535
1536         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1537
1538         if (msg_arr) {
1539                 free(msg_arr);
1540                 msg_arr = NULL;
1541         }
1542         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1543         if (r / 100 != 1) {
1544                 scr_printf("%s\n", cmd);
1545         } else {
1546                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1547                         ;
1548         }
1549
1550         if (num_msgs == 0) {    /* TODO look at this later */
1551                 if (c == LastMessages) return;
1552                 scr_printf("*** There are no ");
1553                 if (c == NewMessages) scr_printf("new ");
1554                 if (c == OldMessages) scr_printf("old ");
1555                 scr_printf("messages in this room.\n");
1556                 return;
1557         }
1558
1559         /* this loop cycles through each message... */
1560         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1561         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1562                 while (msg_arr[a] == 0L) {
1563                         a = a + rdir;
1564                         if ((a == num_msgs) || (a == (-1)))
1565                                 return;
1566                 }
1567
1568 RAGAIN:         pagin = ((arcflag == 0)
1569                          && (quotflag == 0)
1570                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1571
1572                 /* If we're doing a quote, set the screenwidth to 72 */
1573                 if (quotflag) {
1574                         hold_sw = screenwidth;
1575                         screenwidth = 72;
1576                 }
1577
1578                 /* If printing or archiving, set the screenwidth to 80 */
1579                 if (arcflag) {
1580                         hold_sw = screenwidth;
1581                         screenwidth = 80;
1582                 }
1583
1584                 /* clear parts list */
1585                 free_parts(last_message_parts);
1586                 last_message_parts = NULL;
1587
1588                 /* now read the message... */
1589                 e = read_message(ipc, msg_arr[a], pagin, dest);
1590
1591                 /* ...and set the screenwidth back if we have to */
1592                 if ((quotflag) || (arcflag)) {
1593                         screenwidth = hold_sw;
1594                 }
1595 RMSGREAD:
1596                 highest_msg_read = msg_arr[a];
1597                 if (quotflag) {
1598                         fclose(dest);
1599                         dest = NULL;
1600                         quotflag = 0;
1601                         enable_color = hold_color;
1602                         process_quote();
1603                         e = 'r';
1604                         goto DONE_QUOTING;
1605                 }
1606                 if (arcflag) {
1607                         fclose(dest);
1608                         dest = NULL;
1609                         arcflag = 0;
1610                         enable_color = hold_color;
1611                         f = fork();
1612                         if (f == 0) {
1613                                 if (freopen(prtfile, "r", stdin) == NULL) {
1614                                         /* we probably should handle the error condition here */
1615                                 }
1616                                 stty_ctdl(SB_RESTORE);
1617                                 ka_system(printcmd);
1618                                 stty_ctdl(SB_NO_INTR);
1619                                 unlink(prtfile);
1620                                 exit(0);
1621                         }
1622                         if (f > 0)
1623                                 do {
1624                                         g = wait(NULL);
1625                                 } while ((g != f) && (g >= 0));
1626                         scr_printf("Message printed.\n");
1627                 }
1628                 if (e == SIGQUIT)
1629                         return;
1630                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1631                         && (((room_flags & QR_MAILBOX) == 0)
1632                         || (rc_force_mail_prompts == 0))) {
1633                         e = 'n';
1634                 } else {
1635                         color(DIM_WHITE);
1636                         scr_printf("(");
1637                         color(BRIGHT_WHITE);
1638                         scr_printf("%d", num_msgs - a - 1);
1639                         color(DIM_WHITE);
1640                         scr_printf(") ");
1641
1642                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1643                         if (rc_url_cmd[0] && num_urls)
1644                                 keyopt("<U>RLview ");
1645                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1646                                 keyopt("<I>mages ");
1647                         keyopt("<?>help -> ");
1648
1649                         do {
1650                                 e = (inkey() & 127);
1651                                 e = tolower(e);
1652 /* return key same as <N> */ if (e == 10)
1653                                         e = 'n';
1654 /* space key same as <N> */ if (e == 32)
1655                                         e = 'n';
1656 /* del/move for aides only */
1657                                     if (  (!is_room_aide)
1658                                        && ((room_flags & QR_MAILBOX) == 0)
1659                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1660                                        ) {
1661                                         if ((e == 'd') || (e == 'm'))
1662                                                 e = 0;
1663                                 }
1664 /* print only if available */
1665                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1666                                         e = 0;
1667 /* can't file if not allowed */
1668                                     if ((e == 'f')
1669                                         && (rc_allow_attachments == 0))
1670                                         e = 0;
1671 /* link only if browser avail*/
1672                                     if ((e == 'u')
1673                                         && (IsEmptyStr(rc_url_cmd)))
1674                                         e = 0;
1675                                 if ((e == 'i')
1676                                         && (IsEmptyStr(imagecmd) || !has_images))
1677                                         e = 0;
1678                         } while ((e != 'a') && (e != 'n') && (e != 's')
1679                                  && (e != 'd') && (e != 'm') && (e != 'p')
1680                                  && (e != 'q') && (e != 'b') && (e != 'h')
1681                                  && (e != 'r') && (e != 'f') && (e != '?')
1682                                  && (e != 'u') && (e != 'c') && (e != 'y')
1683                                  && (e != 'i') && (e != 'o') );
1684                         switch (e) {
1685                         case 's':
1686                                 scr_printf("Stop");
1687                                 break;
1688                         case 'a':
1689                                 scr_printf("Again");
1690                                 break;
1691                         case 'd':
1692                                 scr_printf("Delete");
1693                                 break;
1694                         case 'm':
1695                                 scr_printf("Move");
1696                                 break;
1697                         case 'c':
1698                                 scr_printf("Copy");
1699                                 break;
1700                         case 'n':
1701                                 scr_printf("Next");
1702                                 break;
1703                         case 'p':
1704                                 scr_printf("Print");
1705                                 break;
1706                         case 'q':
1707                                 scr_printf("reply Quoted");
1708                                 break;
1709                         case 'b':
1710                                 scr_printf("Back");
1711                                 break;
1712                         case 'h':
1713                                 scr_printf("Header");
1714                                 break;
1715                         case 'r':
1716                                 scr_printf("Reply");
1717                                 break;
1718                         case 'o':
1719                                 scr_printf("Open attachments");
1720                                 break;
1721                         case 'f':
1722                                 scr_printf("File");
1723                                 break;
1724                         case 'u':
1725                                 scr_printf("URL's");
1726                                 break;
1727                         case 'y':
1728                                 scr_printf("mY next");
1729                                 break;
1730                         case 'i':
1731                                 break;
1732                         case '?':
1733                                 scr_printf("? <help>");
1734                                 break;
1735                         }
1736                         if (userflags & US_DISAPPEAR || e == 'i')
1737                                 scr_printf("\r%79s\r", "");
1738                         else
1739                                 scr_printf("\n");
1740                 }
1741 DONE_QUOTING:   switch (e) {
1742                 case '?':
1743                         scr_printf("Options available here:\n"
1744                                 " ?  Help (prints this message)\n"
1745                                 " S  Stop reading immediately\n"
1746                                 " A  Again (repeats last message)\n"
1747                                 " N  Next (continue with next message)\n"
1748                                 " Y  My Next (continue with next message you authored)\n"
1749                                 " B  Back (go back to previous message)\n");
1750                         if (  (is_room_aide)
1751                            || (room_flags & QR_MAILBOX)
1752                            || (room_flags2 & QR2_COLLABDEL)
1753                         ) {
1754                                 scr_printf(" D  Delete this message\n"
1755                                         " M  Move message to another room\n");
1756                         }
1757                         scr_printf(" C  Copy message to another room\n");
1758                         if (!IsEmptyStr(printcmd))
1759                                 scr_printf(" P  Print this message\n");
1760                         scr_printf(
1761                                 " Q  Reply to this message, quoting portions of it\n"
1762                                 " H  Headers (display message headers only)\n");
1763                         if (is_mail)
1764                                 scr_printf(" R  Reply to this message\n");
1765                         if (rc_allow_attachments) {
1766                                 scr_printf(" O  (Open attachments)\n");
1767                                 scr_printf(" F  (save attachments to a File)\n");
1768                         }
1769                         if (!IsEmptyStr(rc_url_cmd))
1770                                 scr_printf(" U  (list URL's for display)\n");
1771                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1772                                 scr_printf(" I  Image viewer\n");
1773                         scr_printf("\n");
1774                         goto RMSGREAD;
1775                 case 'p':
1776                         scr_flush();
1777                         dest = fopen(prtfile, "w");
1778                         arcflag = 1;
1779                         hold_color = enable_color;
1780                         enable_color = 0;
1781                         goto RAGAIN;
1782                 case 'q':
1783                         scr_flush();
1784                         dest = fopen(temp2, "w");
1785                         quotflag = 1;
1786                         hold_color = enable_color;
1787                         enable_color = 0;
1788                         goto RAGAIN;
1789                 case 's':
1790                         return;
1791                 case 'a':
1792                         goto RAGAIN;
1793                 case 'b':
1794                         a = a - (rdir * 2);
1795                         break;
1796                 case 'm':
1797                 case 'c':
1798                         newprompt("Enter target room: ",
1799                                   targ, ROOMNAMELEN - 1);
1800                         if (!IsEmptyStr(targ)) {
1801                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1802                                                        msg_arr[a], targ, cmd);
1803                                 scr_printf("%s\n", cmd);
1804                                 if (r / 100 == 2)
1805                                         msg_arr[a] = 0L;
1806                         } else {
1807                                 goto RMSGREAD;
1808                         }
1809                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1810                                 goto RMSGREAD;  /* the logic here sucks */
1811                         break;
1812                 case 'o':
1813                 case 'f':
1814                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1815                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1816                                         filename, &attachment, progress, cmd);
1817                         if (r / 100 != 2) {
1818                                 scr_printf("%s\n", cmd);
1819                         } else {
1820                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1821                                 /*
1822                                  * Part 1 won't have a filename; use the
1823                                  * subject of the message instead. IO
1824                                  */
1825                                 if (IsEmptyStr(filename)) {
1826                                         strcpy(filename, reply_subject);
1827                                 }
1828                                 if (e == 'o') {         /* open attachment */
1829                                         mkdir(tempdir, 0700);
1830                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1831                                                 tempdir,
1832                                                 ++att_seq,
1833                                                 filename);
1834                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1835                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1836                                         rv = system(cmd);
1837                                         if (rv != 0)
1838                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1839                                 }
1840                                 else {                  /* save attachment to disk */
1841                                         destination_directory(save_to, filename);
1842                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1843                                 }
1844                         }
1845                         if (attachment) {
1846                                 free(attachment);
1847                                 attachment = NULL;
1848                         }
1849                         goto RMSGREAD;
1850                 case 'd':
1851                         scr_printf("*** Delete this message? ");
1852                         if (yesno() == 1) {
1853                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1854                                 scr_printf("%s\n", cmd);
1855                                 if (r / 100 == 2)
1856                                         msg_arr[a] = 0L;
1857                         } else {
1858                                 goto RMSGREAD;
1859                         }
1860                         break;
1861                 case 'h':
1862                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1863                         goto RMSGREAD;
1864                 case 'r':
1865                         savedpos = num_msgs;
1866                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1867                         num_msgs = savedpos;
1868                         goto RMSGREAD;
1869                 case 'u':
1870                         list_urls(ipc);
1871                         goto RMSGREAD;
1872                 case 'i':
1873                         image_view(ipc, msg_arr[a]);
1874                         goto RMSGREAD;
1875             case 'y':
1876           { /* hack hack hack */
1877             /* find the next message by me, stay here if we find nothing */
1878             int finda;
1879             int lasta = a;
1880             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1881               {
1882                 /* This is repetitively dumb, but that's what computers are for.
1883                    We have to load up messages until we find one by us */
1884                 char buf[SIZ];
1885                 int founda = 0;
1886                 struct ctdlipcmessage *msg = NULL;
1887
1888                 /* read the header so we can get 'from=' */
1889                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1890                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1891                         a = lasta; /* meesa current */
1892                         founda = 1;
1893                 }
1894
1895                 free(msg);
1896
1897                 if (founda)
1898                         break; /* for */
1899                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1900               } /* for */
1901           } /* case 'y' */
1902       } /* switch */
1903         }                       /* end for loop */
1904 }                               /* end read routine */
1905
1906
1907
1908
1909 /*
1910  * View and edit a system message
1911  */
1912 void edit_system_message(CtdlIPC *ipc, char *which_message)
1913 {
1914         char desc[SIZ];
1915         char read_cmd[SIZ];
1916         char write_cmd[SIZ];
1917
1918         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1919         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1920         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1921         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1922 }
1923
1924
1925
1926
1927 /*
1928  * Loads the contents of a file into memory.  Caller must free the allocated
1929  * memory.
1930  */
1931 char *load_message_from_file(FILE *src)
1932 {
1933         size_t i;
1934         size_t got = 0;
1935         char *dest = NULL;
1936
1937         fseek(src, 0, SEEK_END);
1938         i = ftell(src);
1939         rewind(src);
1940
1941         dest = (char *)calloc(1, i + 1);
1942         if (!dest)
1943                 return NULL;
1944
1945         while (got < i) {
1946                 size_t g;
1947
1948                 g = fread(dest + got, 1, i - got, src);
1949                 got += g;
1950                 if (g < i - got) {
1951                         /* Interrupted system call, keep going */
1952                         if (errno == EINTR)
1953                                 continue;
1954                         /* At this point we have either EOF or error */
1955                         i = got;
1956                         break;
1957                 }
1958                 dest[i] = 0;
1959         }
1960
1961         return dest;
1962 }