textclient/src/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 "tuiconfig.h"
  52 #include "rooms.h"
  53 //#ifndef HAVE_SNPRINTF
  54 ///#include "snprintf.h"
  55 //#endif
  56 #include "screen.h"
  57
  58 #define MAXWORDBUF SIZ
  59 #define NO_REPLY_TO     "nobody ... xxxxxx"
  60
  61 char reply_to[SIZ];
  62 char reply_subject[SIZ];
  63 char reply_references[SIZ];
  64 char reply_inreplyto[SIZ];
  65
  66 struct cittext {
  67         struct cittext *next;
  68         char text[MAXWORDBUF];
  69 };
  70
  71 void stty_ctdl(int cmd);
  72 int haschar(const char *st, int ch);
  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 extern char room_name[];
  80 extern char tempdir[];
  81 extern unsigned room_flags;
  82 extern unsigned room_flags2;
  83 extern int entmsg_ok;
  84 extern long highest_msg_read;
  85 extern char temp[];
  86 extern char temp2[];
  87 extern int screenwidth;
  88 extern int screenheight;
  89 extern long maxmsgnum;
  90 extern char is_mail;
  91 extern char is_aide;
  92 extern char is_room_aide;
  93 extern char fullname[];
  94 extern char axlevel;
  95 extern unsigned userflags;
  96 extern char sigcaught;
  97 extern char printcmd[];
  98 extern int rc_allow_attachments;
  99 extern int rc_display_message_numbers;
 100 extern int rc_force_mail_prompts;
 101 extern int editor_pid;
 102 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 103 int num_urls = 0;
 104 char urls[MAXURLS][SIZ];
 105 char imagecmd[SIZ];
 106 int has_images = 0;                             /* Current msg has images */
 107 struct parts *last_message_parts = NULL;        /* Parts from last msg */
 108
 109
 110
 111 void ka_sigcatch(int signum)
 112 {
 113         alarm(S_KEEPALIVE);
 114         signal(SIGALRM, ka_sigcatch);
 115         CtdlIPCNoop(ipc_for_signal_handlers);
 116 }
 117
 118
 119 /*
 120  * server keep-alive version of wait() (needed for external editor)
 121  */
 122 pid_t ka_wait(int *kstatus)
 123 {
 124         pid_t p;
 125
 126         alarm(S_KEEPALIVE);
 127         signal(SIGALRM, ka_sigcatch);
 128         do {
 129                 errno = 0;
 130                 p = wait(kstatus);
 131         } while (errno == EINTR);
 132         signal(SIGALRM, SIG_IGN);
 133         alarm(0);
 134         return (p);
 135 }
 136
 137
 138 /*
 139  * version of system() that uses ka_wait()
 140  */
 141 int ka_system(char *shc)
 142 {
 143         pid_t childpid;
 144         pid_t waitpid;
 145         int retcode;
 146
 147         childpid = fork();
 148         if (childpid < 0) {
 149                 color(BRIGHT_RED);
 150                 perror("Cannot fork");
 151                 color(DIM_WHITE);
 152                 return ((pid_t) childpid);
 153         }
 154
 155         if (childpid == 0) {
 156                 execlp("/bin/sh", "sh", "-c", shc, NULL);
 157                 exit(127);
 158         }
 159
 160         if (childpid > 0) {
 161                 do {
 162                         waitpid = ka_wait(&retcode);
 163                 } while (waitpid != childpid);
 164                 return (retcode);
 165         }
 166
 167         return (-1);
 168 }
 169
 170
 171
 172 /*
 173  * add a newline to the buffer...
 174  */
 175 void add_newline(struct cittext *textlist)
 176 {
 177         struct cittext *ptr;
 178
 179         ptr = textlist;
 180         while (ptr->next != NULL)
 181                 ptr = ptr->next;
 182
 183         while (ptr->text[strlen(ptr->text) - 1] == 32)
 184                 ptr->text[strlen(ptr->text) - 1] = 0;
 185         /* strcat(ptr->text,"\n"); */
 186
 187         ptr->next = (struct cittext *)
 188             malloc(sizeof(struct cittext));
 189         ptr = ptr->next;
 190         ptr->next = NULL;
 191         strcpy(ptr->text, "");
 192 }
 193
 194
 195 /*
 196  * add a word to the buffer...
 197  */
 198 void add_word(struct cittext *textlist, char *wordbuf)
 199 {
 200         struct cittext *ptr;
 201
 202         ptr = textlist;
 203         while (ptr->next != NULL)
 204                 ptr = ptr->next;
 205
 206         if (3 + strlen(ptr->text) + strlen(wordbuf) > screenwidth) {
 207                 ptr->next = (struct cittext *)
 208                     malloc(sizeof(struct cittext));
 209                 ptr = ptr->next;
 210                 ptr->next = NULL;
 211                 strcpy(ptr->text, "");
 212         }
 213
 214         strcat(ptr->text, wordbuf);
 215         strcat(ptr->text, " ");
 216 }
 217
 218
 219 /*
 220  * begin editing of an opened file pointed to by fp
 221  */
 222 void citedit(FILE *fp)
 223 {
 224         int a, prev, finished, b, last_space;
 225         int appending = 0;
 226         struct cittext *textlist = NULL;
 227         struct cittext *ptr;
 228         char wordbuf[MAXWORDBUF];
 229         int rv = 0;
 230
 231         /* first, load the text into the buffer */
 232         fseek(fp, 0L, 0);
 233         textlist = (struct cittext *) malloc(sizeof(struct cittext));
 234         textlist->next = NULL;
 235         strcpy(textlist->text, "");
 236
 237         strcpy(wordbuf, "");
 238         prev = (-1);
 239         while (a = getc(fp), a >= 0) {
 240                 appending = 1;
 241                 if ((a == 32) || (a == 9) || (a == 13) || (a == 10)) {
 242                         add_word(textlist, wordbuf);
 243                         strcpy(wordbuf, "");
 244                         if ((prev == 13) || (prev == 10)) {
 245                                 add_word(textlist, "\n");
 246                                 add_newline(textlist);
 247                                 add_word(textlist, "");
 248                         }
 249                 } else {
 250                         wordbuf[strlen(wordbuf) + 1] = 0;
 251                         wordbuf[strlen(wordbuf)] = a;
 252                 }
 253                 if (strlen(wordbuf) + 3 > screenwidth) {
 254                         add_word(textlist, wordbuf);
 255                         strcpy(wordbuf, "");
 256                 }
 257                 prev = a;
 258         }
 259
 260         /* get text */
 261         finished = 0;
 262         prev = (appending ? 13 : (-1));
 263         strcpy(wordbuf, "");
 264         async_ka_start();
 265         do {
 266                 a = inkey();
 267                 if (a == 10)
 268                         a = 13;
 269                 if (a == 9)
 270                         a = 32;
 271                 if (a == 127)
 272                         a = 8;
 273
 274                 if ((a != 32) && (prev == 13)) {
 275                         add_word(textlist, "\n");
 276                         scr_printf(" ");
 277                 }
 278
 279                 if ((a == 32) && (prev == 13)) {
 280                         add_word(textlist, "\n");
 281                         add_newline(textlist);
 282                 }
 283
 284                 if (a == 8) {
 285                         if (!IsEmptyStr(wordbuf)) {
 286                                 wordbuf[strlen(wordbuf) - 1] = 0;
 287                                 scr_putc(8);
 288                                 scr_putc(32);
 289                                 scr_putc(8);
 290                         }
 291                 } else if (a == 23) {
 292                         do {
 293                                 wordbuf[strlen(wordbuf) - 1] = 0;
 294                                 scr_putc(8);
 295                                 scr_putc(32);
 296                                 scr_putc(8);
 297                         } while (!IsEmptyStr(wordbuf) && wordbuf[strlen(wordbuf) - 1] != ' ');
 298                 } else if (a == 13) {
 299                         scr_printf("\n");
 300                         if (IsEmptyStr(wordbuf))
 301                                 finished = 1;
 302                         else {
 303                                 for (b = 0; b < strlen(wordbuf); ++b)
 304                                         if (wordbuf[b] == 32) {
 305                                                 wordbuf[b] = 0;
 306                                                 add_word(textlist,
 307                                                          wordbuf);
 308                                                 strcpy(wordbuf,
 309                                                        &wordbuf[b + 1]);
 310                                                 b = 0;
 311                                         }
 312                                 add_word(textlist, wordbuf);
 313                                 strcpy(wordbuf, "");
 314                         }
 315                 } else {
 316                         scr_putc(a);
 317                         wordbuf[strlen(wordbuf) + 1] = 0;
 318                         wordbuf[strlen(wordbuf)] = a;
 319                 }
 320                 if ((strlen(wordbuf) + 3) > screenwidth) {
 321                         last_space = (-1);
 322                         for (b = 0; b < strlen(wordbuf); ++b)
 323                                 if (wordbuf[b] == 32)
 324                                         last_space = b;
 325                         if (last_space >= 0) {
 326                                 for (b = 0; b < strlen(wordbuf); ++b)
 327                                         if (wordbuf[b] == 32) {
 328                                                 wordbuf[b] = 0;
 329                                                 add_word(textlist,
 330                                                          wordbuf);
 331                                                 strcpy(wordbuf,
 332                                                        &wordbuf[b + 1]);
 333                                                 b = 0;
 334                                         }
 335                                 for (b = 0; b < strlen(wordbuf); ++b) {
 336                                         scr_putc(8);
 337                                         scr_putc(32);
 338                                         scr_putc(8);
 339                                 }
 340                                 scr_printf("\n%s", wordbuf);
 341                         } else {
 342                                 add_word(textlist, wordbuf);
 343                                 strcpy(wordbuf, "");
 344                                 scr_printf("\n");
 345                         }
 346                 }
 347                 prev = a;
 348         } while (finished == 0);
 349         async_ka_end();
 350
 351         /* write the buffer back to disk */
 352         fseek(fp, 0L, 0);
 353         for (ptr = textlist; ptr != NULL; ptr = ptr->next) {
 354                 fprintf(fp, "%s", ptr->text);
 355         }
 356         putc(10, fp);
 357         fflush(fp);
 358         rv = ftruncate(fileno(fp), ftell(fp));
 359         if (rv < 0)
 360                 scr_printf("failed to set message buffer: %s\n", strerror(errno));
 361
 362
 363         /* and deallocate the memory we used */
 364         while (textlist != NULL) {
 365                 ptr = textlist->next;
 366                 free(textlist);
 367                 textlist = ptr;
 368         }
 369 }
 370
 371
 372 /*
 373  * Free the struct parts
 374  */
 375 void free_parts(struct parts *p)
 376 {
 377         struct parts *a_part = p;
 378
 379         while (a_part) {
 380                 struct parts *q;
 381
 382                 q = a_part;
 383                 a_part = a_part->next;
 384                 free(q);
 385         }
 386 }
 387
 388
 389 /*
 390  * This is a mini RFC2047 decoder.
 391  * It only handles strings encoded from UTF-8 as Quoted-printable.
 392  */
 393 void mini_2047_decode(char *s) {
 394         if (!s) return;
 395
 396         char *qstart = strstr(s, "=?UTF-8?Q?");
 397         if (!qstart) return;
 398
 399         char *qend = strstr(s, "?=");
 400         if (!qend) return;
 401
 402         if (qend <= qstart) return;
 403
 404         strcpy(qstart, &qstart[10]);
 405         qend -= 10;
 406
 407         char *p = qstart;
 408         while (p < qend) {
 409
 410                 if (p[0] == '=') {
 411
 412                         char ch[3];
 413                         ch[0] = p[1];
 414                         ch[1] = p[2];
 415                         ch[2] = p[3];
 416                         int c;
 417                         sscanf(ch, "%02x", &c);
 418                         p[0] = c;
 419                         strcpy(&p[1], &p[3]);
 420                         qend -= 2;
 421                 }
 422
 423                 if (p[0] == '_') {
 424                         p[0] = ' ';
 425                 }
 426
 427                 ++p;
 428         }
 429
 430         strcpy(qend, &qend[2]);
 431 }
 432
 433 /*
 434  * Read a message from the server
 435  */
 436 int read_message(CtdlIPC *ipc,
 437         long num,   /* message number */
 438         int pagin, /* 0 = normal read, 1 = read with pagination, 2 = header */
 439         FILE *dest) /* Destination file, NULL for screen */
 440 {
 441         char buf[SIZ];
 442         char now[SIZ];
 443         int format_type = 0;
 444         int fr = 0;
 445         int nhdr = 0;
 446         struct ctdlipcmessage *message = NULL;
 447         int r;                          /* IPC response code */
 448         char *converted_text = NULL;
 449         char *lineptr;
 450         char *nextline;
 451         char *searchptr;
 452         int i;
 453         char ch;
 454         int linelen;
 455         int final_line_is_blank = 0;
 456
 457         has_images = 0;
 458
 459         sigcaught = 0;
 460         stty_ctdl(1);
 461
 462         strcpy(reply_to, NO_REPLY_TO);
 463         strcpy(reply_subject, "");
 464         strcpy(reply_references, "");
 465         strcpy(reply_inreplyto, "");
 466
 467         r = CtdlIPCGetSingleMessage(ipc, num, (pagin == READ_HEADER ? 1 : 0), 4, &message, buf);
 468         if (r / 100 != 1) {
 469                 scr_printf("*** msg #%ld: %d %s\n", num, r, buf);
 470                 stty_ctdl(0);
 471                 free(message->text);
 472                 free_parts(message->attachments);
 473                 free(message);
 474                 return (0);
 475         }
 476
 477         if (dest) {
 478                 fprintf(dest, "\n ");
 479         } else {
 480                 scr_printf("\n");
 481                 if (pagin != 2)
 482                         scr_printf(" ");
 483         }
 484         if (pagin == 1 && !dest) {
 485                 color(BRIGHT_CYAN);
 486         }
 487
 488         /* View headers only */
 489         if (pagin == 2) {
 490                 scr_printf("nhdr=%s\nfrom=%s\ntype=%d\nmsgn=%s\n",
 491                                 message->nhdr ? "yes" : "no",
 492                                 message->author, message->type,
 493                                 message->msgid);
 494                 if (!IsEmptyStr(message->subject)) {
 495                         scr_printf("subj=%s\n", message->subject);
 496                 }
 497                 if (!IsEmptyStr(message->email)) {
 498                         scr_printf("rfca=%s\n", message->email);
 499                 }
 500                 scr_printf("hnod=%s\nroom=%s\nnode=%s\ntime=%s",
 501                                 message->hnod, message->room,
 502                                 message->node,
 503                                 asctime(localtime(&message->time)));
 504                 if (!IsEmptyStr(message->recipient)) {
 505                         scr_printf("rcpt=%s\n", message->recipient);
 506                 }
 507                 if (message->attachments) {
 508                         struct parts *ptr;
 509
 510                         for (ptr = message->attachments; ptr; ptr = ptr->next) {
 511                                 scr_printf("part=%s|%s|%s|%s|%s|%ld\n",
 512                                         ptr->name, ptr->filename, ptr->number,
 513                                         ptr->disposition, ptr->mimetype,
 514                                         ptr->length
 515                                 );
 516                         }
 517                 }
 518                 scr_printf("\n");
 519                 stty_ctdl(0);
 520                 free(message->text);
 521                 free_parts(message->attachments);
 522                 free(message);
 523                 return (0);
 524         }
 525
 526         if (rc_display_message_numbers) {
 527                 if (dest) {
 528                         fprintf(dest, "[#%s] ", message->msgid);
 529                 } else {
 530                         color(DIM_WHITE);
 531                         scr_printf("[");
 532                         color(BRIGHT_WHITE);
 533                         scr_printf("#%s", message->msgid);
 534                         color(DIM_WHITE);
 535                         scr_printf("] ");
 536                 }
 537         }
 538         if (nhdr == 1 && !is_room_aide) {
 539                 if (dest) {
 540                         fprintf(dest, " ****");
 541                 } else {
 542                         scr_printf(" ****");
 543                 }
 544         } else {
 545                 fmt_date(now, sizeof now, message->time, 0);
 546                 if (dest) {
 547                         fprintf(dest, "%s from %s ", now, message->author);
 548                         if (!IsEmptyStr(message->email)) {
 549                                 fprintf(dest, "<%s> ", message->email);
 550                         }
 551                 } else {
 552                         color(BRIGHT_CYAN);
 553                         scr_printf("%s ", now);
 554                         color(DIM_WHITE);
 555                         scr_printf("from ");
 556                         color(BRIGHT_CYAN);
 557                         scr_printf("%s ", message->author);
 558                         if (!IsEmptyStr(message->email)) {
 559                                 color(DIM_WHITE);
 560                                 scr_printf("<");
 561                                 color(BRIGHT_BLUE);
 562                                 scr_printf("%s", message->email);
 563                                         color(DIM_WHITE);
 564                                 scr_printf("> ");
 565                         }
 566                 }
 567                 if (!IsEmptyStr(message->node)) {
 568                         if ((room_flags & QR_NETWORK)
 569                             || ((strcasecmp(message->node, ipc->ServInfo.nodename)
 570                              && (strcasecmp(message->node, ipc->ServInfo.fqdn))))) {
 571                                 if (IsEmptyStr(message->email)) {
 572                                         if (dest) {
 573                                                 fprintf(dest, "@%s ", message->node);
 574                                         } else {
 575                                                 color(DIM_WHITE);
 576                                                 scr_printf("@");
 577                                                 color(BRIGHT_YELLOW);
 578                                                 scr_printf("%s ", message->node);
 579                                         }
 580                                 }
 581                         }
 582                 }
 583                 if (strcasecmp(message->hnod, ipc->ServInfo.humannode)
 584                     && (!IsEmptyStr(message->hnod)) && (IsEmptyStr(message->email))) {
 585                         if (dest) {
 586                                 fprintf(dest, "(%s) ", message->hnod);
 587                         } else {
 588                                 color(DIM_WHITE);
 589                                 scr_printf("(");
 590                                 color(BRIGHT_WHITE);
 591                                 scr_printf("%s", message->hnod);
 592                                 color(DIM_WHITE);
 593                                 scr_printf(") ");
 594                         }
 595                 }
 596                 if (strcasecmp(message->room, room_name) && (IsEmptyStr(message->email))) {
 597                         if (dest) {
 598                                 fprintf(dest, "in %s> ", message->room);
 599                         } else {
 600                                 color(DIM_WHITE);
 601                                 scr_printf("in ");
 602                                 color(BRIGHT_MAGENTA);
 603                                 scr_printf("%s> ", message->room);
 604                         }
 605                 }
 606                 if (!IsEmptyStr(message->recipient)) {
 607                         if (dest) {
 608                                 fprintf(dest, "to %s ", message->recipient);
 609                         } else {
 610                                 color(DIM_WHITE);
 611                                 scr_printf("to ");
 612                                 color(BRIGHT_CYAN);
 613                                 scr_printf("%s ", message->recipient);
 614                         }
 615                 }
 616         }
 617
 618         if (dest) {
 619                 fprintf(dest, "\n");
 620         } else {
 621                 scr_printf("\n");
 622         }
 623
 624         /* Set the reply-to address to an Internet e-mail address if possible
 625          */
 626         if ((message->email != NULL) && (!IsEmptyStr(message->email))) {
 627                 if (!IsEmptyStr(message->author)) {
 628                         snprintf(reply_to, sizeof reply_to, "%s <%s>", message->author, message->email);
 629                 }
 630                 else {
 631                         safestrncpy(reply_to, message->email, sizeof reply_to);
 632                 }
 633         }
 634
 635         /* But if we can't do that, set it to a Citadel address.
 636          */
 637         if (!strcmp(reply_to, NO_REPLY_TO)) {
 638                 snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 639                          message->author, message->node);
 640         }
 641
 642         if (message->msgid != NULL) {
 643                 safestrncpy(reply_inreplyto, message->msgid, sizeof reply_inreplyto);
 644         }
 645
 646         if (message->references != NULL) if (!IsEmptyStr(message->references)) {
 647                 safestrncpy(reply_references, message->references, sizeof reply_references);
 648         }
 649
 650         if (message->subject != NULL) {
 651                 safestrncpy(reply_subject, message->subject, sizeof reply_subject);
 652                 if (!IsEmptyStr(message->subject)) {
 653                         if (dest) {
 654                                 fprintf(dest, "Subject: %s\n", message->subject);
 655                         } else {
 656                                 color(DIM_WHITE);
 657                                 scr_printf("Subject: ");
 658                                 color(BRIGHT_CYAN);
 659                                 mini_2047_decode(message->subject);
 660                                 scr_printf("%s\n", message->subject);
 661                         }
 662                 }
 663         }
 664
 665         if (pagin == 1 && !dest) {
 666                 color(BRIGHT_WHITE);
 667         }
 668
 669         /******* end of header output, start of message text output *******/
 670
 671         /*
 672          * Convert HTML to plain text, formatting for the actual width
 673          * of the client screen.
 674          */
 675         if (!strcasecmp(message->content_type, "text/html")) {
 676                 converted_text = html_to_ascii(message->text, 0, screenwidth, 0);
 677                 if (converted_text != NULL) {
 678                         free(message->text);
 679                         message->text = converted_text;
 680                         format_type = 1;
 681                 }
 682         }
 683
 684         /* Text/plain is a different type */
 685         if (!strcasecmp(message->content_type, "text/plain")) {
 686                 format_type = 1;
 687         }
 688
 689         /* Extract URL's */
 690         num_urls = 0;   /* Start with a clean slate */
 691         searchptr = message->text;
 692         while ( (searchptr != NULL) && (num_urls < MAXURLS) ) {
 693                 searchptr = strstr(searchptr, "http://");
 694                 if (searchptr != NULL) {
 695                         safestrncpy(urls[num_urls], searchptr, sizeof(urls[num_urls]));
 696                         for (i = 0; i < strlen(urls[num_urls]); i++) {
 697                                 ch = urls[num_urls][i];
 698                                 if (ch == '>' || ch == '\"' || ch == ')' ||
 699                                     ch == ' ' || ch == '\n') {
 700                                         urls[num_urls][i] = 0;
 701                                         break;
 702                                 }
 703                         }
 704                         num_urls++;
 705                         ++searchptr;
 706                 }
 707         }
 708
 709         /*
 710          * Here we go
 711          */
 712         if (format_type == 0) {
 713                 fr = fmout(screenwidth, NULL, message->text, dest, 1);
 714         } else {
 715                 /* renderer for text/plain */
 716
 717                 lineptr = message->text;
 718
 719                 do {
 720                         nextline = strchr(lineptr, '\n');
 721                         if (nextline != NULL) {
 722                                 *nextline = 0;
 723                                 ++nextline;
 724                                 if (*nextline == 0) nextline = NULL;
 725                         }
 726
 727                         if (sigcaught == 0) {
 728                                 linelen = strlen(lineptr);
 729                                 if (linelen && (lineptr[linelen-1] == '\r')) {
 730                                         lineptr[--linelen] = 0;
 731                                 }
 732                                 if (dest) {
 733                                         fprintf(dest, "%s\n", lineptr);
 734                                 } else {
 735                                         scr_printf("%s\n", lineptr);
 736                                 }
 737                         }
 738                         if (lineptr[0] == 0) final_line_is_blank = 1;
 739                         else final_line_is_blank = 0;
 740                         lineptr = nextline;
 741                 } while (nextline);
 742                 fr = sigcaught;
 743         }
 744         if (!final_line_is_blank) {
 745                 if (dest) {
 746                         fprintf(dest, "\n");
 747                 }
 748                 else {
 749                         scr_printf("\n");
 750                         fr = sigcaught;
 751                 }
 752         }
 753
 754         /* Enumerate any attachments */
 755         if ( (pagin == 1) && (message->attachments) ) {
 756                 struct parts *ptr;
 757
 758                 for (ptr = message->attachments; ptr; ptr = ptr->next) {
 759                         if ( (!strcasecmp(ptr->disposition, "attachment"))
 760                            || (!strcasecmp(ptr->disposition, "inline"))
 761                            || (!strcasecmp(ptr->disposition, ""))
 762                         ) {
 763                                 if ( (strcasecmp(ptr->number, message->mime_chosen))
 764                                    && (!IsEmptyStr(ptr->mimetype))
 765                                 ) {
 766                                         color(DIM_WHITE);
 767                                         scr_printf("Part ");
 768                                         color(BRIGHT_MAGENTA);
 769                                         scr_printf("%s", ptr->number);
 770                                         color(DIM_WHITE);
 771                                         scr_printf(": ");
 772                                         color(BRIGHT_CYAN);
 773                                         scr_printf("%s", ptr->filename);
 774                                         color(DIM_WHITE);
 775                                         scr_printf(" (%s, %ld bytes)\n", ptr->mimetype, ptr->length);
 776                                         if (!strncmp(ptr->mimetype, "image/", 6)) {
 777                                                 has_images++;
 778                                         }
 779                                 }
 780                         }
 781                 }
 782         }
 783
 784         /* Save the attachments info for later */
 785         last_message_parts = message->attachments;
 786
 787         /* Now we're done */
 788         free(message->text);
 789         free(message);
 790
 791         if (pagin == 1 && !dest)
 792                 color(DIM_WHITE);
 793         stty_ctdl(0);
 794         return (fr);
 795 }
 796
 797 /*
 798  * replace string function for the built-in editor
 799  */
 800 void replace_string(char *filename, long int startpos)
 801 {
 802         char buf[512];
 803         char srch_str[128];
 804         char rplc_str[128];
 805         FILE *fp;
 806         int a;
 807         long rpos, wpos;
 808         char *ptr;
 809         int substitutions = 0;
 810         long msglen = 0L;
 811         int rv;
 812
 813         newprompt("Enter text to be replaced: ", srch_str, (sizeof(srch_str)-1) );
 814         if (IsEmptyStr(srch_str)) {
 815                 return;
 816         }
 817
 818         newprompt("Enter text to replace it with: ", rplc_str, (sizeof(rplc_str)-1) );
 819
 820         fp = fopen(filename, "r+");
 821         if (fp == NULL) {
 822                 return;
 823         }
 824
 825         wpos = startpos;
 826         fseek(fp, startpos, 0);
 827         strcpy(buf, "");
 828         while (a = getc(fp), a > 0) {
 829                 ++msglen;
 830                 buf[strlen(buf) + 1] = 0;
 831                 buf[strlen(buf)] = a;
 832                 if (strlen(buf) >= strlen(srch_str)) {
 833                         ptr = (&buf[strlen(buf) - strlen(srch_str)]);
 834                         if (!strncmp(ptr, srch_str, strlen(srch_str))) {
 835                                 strcpy(ptr, rplc_str);
 836                                 ++substitutions;
 837                         }
 838                 }
 839                 if (strlen(buf) > 384) {
 840                         rpos = ftell(fp);
 841                         fseek(fp, wpos, 0);
 842                         rv = fwrite((char *) buf, 128, 1, fp);
 843                         if (rv < 0) {
 844                                 scr_printf("failed to replace string: %s\n", strerror(errno));
 845                                 break; /*whoopsi! */
 846                         }
 847                         strcpy(buf, &buf[128]);
 848                         wpos = ftell(fp);
 849                         fseek(fp, rpos, 0);
 850                 }
 851         }
 852         fseek(fp, wpos, 0);
 853         if (!IsEmptyStr(buf)) {
 854                 rv = fwrite((char *) buf, strlen(buf), 1, fp);
 855         }
 856         wpos = ftell(fp);
 857         fclose(fp);
 858         rv = truncate(filename, wpos);
 859         scr_printf("<R>eplace made %d substitution(s).\n\n", substitutions);
 860 }
 861
 862 /*
 863  * Function to begin composing a new message
 864  */
 865 int client_make_message(CtdlIPC *ipc,
 866                         char *filename,         /* temporary file name */
 867                         char *recipient,        /* NULL if it's not mail */
 868                         int is_anonymous,
 869                         int format_type,
 870                         int mode,
 871                         char *subject,          /* buffer to store subject line */
 872                         int subject_required
 873 ) {
 874         FILE *fp;
 875         int a, b, e_ex_code;
 876         long beg;
 877         char datestr[SIZ];
 878         char header[SIZ];
 879         int cksum = 0;
 880
 881         if ( (mode == 2) && (IsEmptyStr(editor_path)) ) {
 882                 scr_printf("*** No editor available; using built-in editor.\n");
 883                 mode = 0;
 884         }
 885
 886         fmt_date(datestr, sizeof datestr, time(NULL), 0);
 887         header[0] = 0;
 888
 889         if (room_flags & QR_ANONONLY && !recipient) {
 890                 snprintf(header, sizeof header, " ****");
 891         }
 892         else {
 893                 snprintf(header, sizeof header,
 894                         " %s from %s",
 895                         datestr,
 896                         (is_anonymous ? "[anonymous]" : fullname)
 897                         );
 898                 if (!IsEmptyStr(recipient)) {
 899                         size_t tmp = strlen(header);
 900                         snprintf(&header[tmp], sizeof header - tmp,
 901                                 " to %s", recipient);
 902                 }
 903         }
 904         scr_printf("%s\n", header);
 905         if (subject != NULL) if (!IsEmptyStr(subject)) {
 906                 scr_printf("Subject: %s\n", subject);
 907         }
 908
 909         if ( (subject_required) && (IsEmptyStr(subject)) ) {
 910                 newprompt("Subject: ", subject, 70);
 911         }
 912
 913         if (mode == 1) {
 914                 scr_printf("(Press ctrl-d when finished)\n");
 915         }
 916
 917         if (mode == 0) {
 918                 fp = fopen(filename, "r");
 919                 if (fp != NULL) {
 920                         fmout(screenwidth, fp, NULL, NULL, 0);
 921                         beg = ftell(fp);
 922                         if (beg < 0)
 923                                 scr_printf("failed to get stream position %s\n",
 924                                            strerror(errno));
 925                         fclose(fp);
 926                 } else {
 927                         fp = fopen(filename, "w");
 928                         if (fp == NULL) {
 929                                 scr_printf("*** Error opening temp file!\n    %s: %s\n",
 930                                         filename, strerror(errno)
 931                                 );
 932                         return(1);
 933                         }
 934                         fclose(fp);
 935                 }
 936         }
 937
 938 ME1:    switch (mode) {
 939
 940         case 0:
 941                 fp = fopen(filename, "r+");
 942                 if (fp == NULL) {
 943                         scr_printf("*** Error opening temp file!\n    %s: %s\n",
 944                                 filename, strerror(errno)
 945                         );
 946                         return(1);
 947                 }
 948                 citedit(fp);
 949                 fclose(fp);
 950                 goto MECR;
 951
 952         case 1:
 953                 fp = fopen(filename, "a");
 954                 if (fp == NULL) {
 955                         scr_printf("*** Error opening temp file!\n"
 956                                 "    %s: %s\n",
 957                                 filename, strerror(errno));
 958                         return(1);
 959                 }
 960                 do {
 961                         a = inkey();
 962                         if (a == 255)
 963                                 a = 32;
 964                         if (a == 13)
 965                                 a = 10;
 966                         if (a != 4) {
 967                                 putc(a, fp);
 968                                 scr_putc(a);
 969                         }
 970                         if (a == 10)
 971                                 scr_putc(10);
 972                 } while (a != 4);
 973                 fclose(fp);
 974                 break;
 975
 976         case 2:
 977         default:        /* allow 2+ modes */
 978                 e_ex_code = 1;  /* start with a failed exit code */
 979                 stty_ctdl(SB_RESTORE);
 980                 editor_pid = fork();
 981                 cksum = file_checksum(filename);
 982                 if (editor_pid == 0) {
 983                         char tmp[SIZ];
 984
 985                         chmod(filename, 0600);
 986                         snprintf(tmp, sizeof tmp, "WINDOW_TITLE=%s", header);
 987                         putenv(tmp);
 988                         execlp(editor_path, editor_path, filename, NULL);
 989                         exit(1);
 990                 }
 991                 if (editor_pid > 0)
 992                         do {
 993                                 e_ex_code = 0;
 994                                 b = ka_wait(&e_ex_code);
 995                         } while ((b != editor_pid) && (b >= 0));
 996                 editor_pid = (-1);
 997                 stty_ctdl(0);
 998                 break;
 999         }
1000
1001 MECR:   if (mode >= 2) {
1002                 if (file_checksum(filename) == cksum) {
1003                         scr_printf("*** Aborted message.\n");
1004                         e_ex_code = 1;
1005                 }
1006                 if (e_ex_code == 0) {
1007                         goto MEFIN;
1008                 }
1009                 goto MEABT2;
1010         }
1011
1012         b = keymenu("Entry command (? for options)",
1013                 "<A>bort|"
1014                 "<C>ontinue|"
1015                 "<S>ave message|"
1016                 "<P>rint formatted|"
1017                 "add s<U>bject|"
1018                 "<R>eplace string|"
1019                 "<H>old message"
1020         );
1021
1022         if (b == 'a') goto MEABT;
1023         if (b == 'c') goto ME1;
1024         if (b == 's') goto MEFIN;
1025         if (b == 'p') {
1026                 scr_printf(" %s from %s", datestr, fullname);
1027                 if (!IsEmptyStr(recipient)) {
1028                         scr_printf(" to %s", recipient);
1029                 }
1030                 scr_printf("\n");
1031                 if (subject != NULL) if (!IsEmptyStr(subject)) {
1032                         scr_printf("Subject: %s\n", subject);
1033                 }
1034                 fp = fopen(filename, "r");
1035                 if (fp != NULL) {
1036                         fmout(screenwidth, fp, NULL, NULL, 0);
1037                         beg = ftell(fp);
1038                         if (beg < 0)
1039                                 scr_printf("failed to get stream position %s\n",
1040                                            strerror(errno));
1041                         fclose(fp);
1042                 }
1043                 goto MECR;
1044         }
1045         if (b == 'r') {
1046                 replace_string(filename, 0L);
1047                 goto MECR;
1048         }
1049         if (b == 'h') {
1050                 return (2);
1051         }
1052         if (b == 'u') {
1053                 if (subject != NULL) {
1054                         newprompt("Subject: ", subject, 70);
1055                 }
1056                 goto MECR;
1057         }
1058
1059 MEFIN:  return (0);
1060
1061 MEABT:  scr_printf("Are you sure? ");
1062         if (yesno() == 0) {
1063                 goto ME1;
1064         }
1065 MEABT2: unlink(filename);
1066         return (2);
1067 }
1068
1069
1070 /*
1071  * Make sure there's room in msg_arr[] for at least one more.
1072  */
1073 void check_msg_arr_size(void) {
1074         if ((num_msgs + 1) > msg_arr_size) {
1075                 msg_arr_size += 512;
1076                 msg_arr = realloc(msg_arr,
1077                         ((sizeof(long)) * msg_arr_size) );
1078         }
1079 }
1080
1081
1082 /*
1083  * break_big_lines()  -  break up lines that are >1024 characters
1084  *                       otherwise the server will truncate
1085  */
1086 void break_big_lines(char *msg) {
1087         char *ptr;
1088         char *break_here;
1089
1090         if (msg == NULL) {
1091                 return;
1092         }
1093
1094         ptr = msg;
1095         while (strlen(ptr) > 1000) {
1096                 break_here = strchr(&ptr[900], ' ');
1097                 if ((break_here == NULL) || (break_here > &ptr[999])) {
1098                         break_here = &ptr[999];
1099                 }
1100                 *break_here = '\n';
1101                 ptr = break_here++;
1102         }
1103 }
1104
1105
1106 /*
1107  * entmsg()  -  edit and create a message
1108  *              returns 0 if message was saved
1109  */
1110 int entmsg(CtdlIPC *ipc,
1111                 int is_reply,   /* nonzero if this was a <R>eply command */
1112                 int c,          /* mode */
1113                 int masquerade  /* prompt for a non-default display name? */
1114 ) {
1115         char buf[SIZ];
1116         int a, b;
1117         int need_recp = 0;
1118         int mode;
1119         long highmsg = 0L;
1120         FILE *fp;
1121         char subject[SIZ];
1122         struct ctdlipcmessage message;
1123         unsigned long *msgarr = NULL;
1124         int r;                  /* IPC response code */
1125         int subject_required = 0;
1126
1127         if (!entmsg_ok) {
1128                 scr_printf("You may not enter messages in this type of room.\n");
1129                 return(1);
1130         }
1131
1132         if (c > 0) {
1133                 mode = 1;
1134         }
1135         else {
1136                 mode = 0;
1137         }
1138
1139         strcpy(subject, "");
1140
1141         /*
1142          * First, check to see if we have permission to enter a message in
1143          * this room.  The server will return an error code if we can't.
1144          */
1145         strcpy(message.recipient, "");
1146         strcpy(message.author, "");
1147         strcpy(message.subject, "");
1148         strcpy(message.references, "");
1149         message.text = "";              /* point to "", changes later */
1150         message.anonymous = 0;
1151         message.type = mode;
1152
1153         if (masquerade) {
1154                 newprompt("Display name for this message: ", message.author, 40);
1155         }
1156
1157         if (is_reply) {
1158
1159                 if (!IsEmptyStr(reply_subject)) {
1160                         if (!strncasecmp(reply_subject,
1161                            "Re: ", 3)) {
1162                                 strcpy(message.subject, reply_subject);
1163                         }
1164                         else {
1165                                 snprintf(message.subject,
1166                                         sizeof message.subject,
1167                                         "Re: %s",
1168                                         reply_subject);
1169                         }
1170                 }
1171
1172                 /* Trim down excessively long lists of thread references.  We eliminate the
1173                  * second one in the list so that the thread root remains intact.
1174                  */
1175                 int rrtok = num_tokens(reply_references, '|');
1176                 int rrlen = strlen(reply_references);
1177                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1178                         remove_token(reply_references, 1, '|');
1179                 }
1180
1181                 snprintf(message.references, sizeof message.references, "%s%s%s",
1182                         reply_references,
1183                         (IsEmptyStr(reply_references) ? "" : "|"),
1184                         reply_inreplyto
1185                 );
1186         }
1187
1188         r = CtdlIPCPostMessage(ipc, 0, &subject_required, &message, buf);
1189
1190         if (r / 100 != 2 && r / 10 != 57) {
1191                 scr_printf("%s\n", buf);
1192                 return (1);
1193         }
1194
1195         /* Error code 570 is special.  It means that we CAN enter a message
1196          * in this room, but a recipient needs to be specified.
1197          */
1198         need_recp = 0;
1199         if (r / 10 == 57) {
1200                 need_recp = 1;
1201         }
1202
1203         /* If the user is a dumbass, tell them how to type. */
1204         if ((userflags & US_EXPERT) == 0) {
1205                 formout(ipc, "entermsg");
1206         }
1207
1208         /* Handle the selection of a recipient, if necessary. */
1209         strcpy(buf, "");
1210         if (need_recp == 1) {
1211                 if (axlevel >= AxProbU) {
1212                         if (is_reply) {
1213                                 strcpy(buf, reply_to);
1214                         } else {
1215                                 newprompt("Enter recipient: ", buf, SIZ-100);
1216                                 if (IsEmptyStr(buf)) {
1217                                         return (1);
1218                                 }
1219                         }
1220                 } else
1221                         strcpy(buf, "sysop");
1222         }
1223         strcpy(message.recipient, buf);
1224
1225         if (room_flags & QR_ANONOPT) {
1226                 scr_printf("Anonymous (Y/N)? ");
1227                 if (yesno() == 1)
1228                         message.anonymous = 1;
1229         }
1230
1231         /* If it's mail, we've got to check the validity of the recipient... */
1232         if (!IsEmptyStr(message.recipient)) {
1233                 r = CtdlIPCPostMessage(ipc, 0, &subject_required,  &message, buf);
1234                 if (r / 100 != 2) {
1235                         scr_printf("%s\n", buf);
1236                         return (1);
1237                 }
1238         }
1239
1240         /* Learn the number of the newest message in in the room, so we can
1241          * tell upon saving whether someone else has posted too.
1242          */
1243         num_msgs = 0;
1244         r = CtdlIPCGetMessages(ipc, LastMessages, 1, NULL, &msgarr, buf);
1245         if (r / 100 != 1) {
1246                 scr_printf("%s\n", buf);
1247         } else {
1248                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1249                         ;
1250         }
1251
1252         /* Now compose the message... */
1253         if (client_make_message(ipc, temp, message.recipient,
1254            message.anonymous, 0, c, message.subject, subject_required) != 0) {
1255             if (msgarr) free(msgarr);
1256                 return (2);
1257         }
1258
1259         /* Reopen the temp file that was created, so we can send it */
1260         fp = fopen(temp, "r");
1261
1262         if (!fp || !(message.text = load_message_from_file(fp))) {
1263                 scr_printf("*** Internal error while trying to save message!\n"
1264                         "%s: %s\n",
1265                         temp, strerror(errno));
1266                 unlink(temp);
1267                 return(errno);
1268         }
1269
1270         if (fp) fclose(fp);
1271
1272         /* Break lines that are >1024 characters, otherwise the server
1273          * will truncate them.
1274          */
1275         break_big_lines(message.text);
1276
1277         /* Transmit message to the server */
1278         r = CtdlIPCPostMessage(ipc, 1, NULL, &message, buf);
1279         if (r / 100 != 4) {
1280                 scr_printf("%s\n", buf);
1281                 return (1);
1282         }
1283
1284         /* Yes, unlink it now, so it doesn't stick around if we crash */
1285         unlink(temp);
1286
1287         if (num_msgs >= 1) highmsg = msgarr[num_msgs - 1];
1288
1289         if (msgarr) free(msgarr);
1290         msgarr = NULL;
1291         r = CtdlIPCGetMessages(ipc, NewMessages, 0, NULL, &msgarr, buf);
1292         if (r / 100 != 1) {
1293                 scr_printf("%s\n", buf);
1294         } else {
1295                 for (num_msgs = 0; msgarr[num_msgs]; num_msgs++)
1296                         ;
1297         }
1298
1299         /* get new highest message number in room to set lrp for goto... */
1300         maxmsgnum = msgarr[num_msgs - 1];
1301
1302         /* now see if anyone else has posted in here */
1303         b = (-1);
1304         for (a = 0; a < num_msgs; ++a) {
1305                 if (msgarr[a] > highmsg) {
1306                         ++b;
1307                 }
1308         }
1309         if (msgarr) free(msgarr);
1310         msgarr = NULL;
1311
1312         /* In the Mail> room, this algorithm always counts one message
1313          * higher than in public rooms, so we decrement it by one.
1314          */
1315         if (need_recp) {
1316                 --b;
1317         }
1318
1319         if (b == 1) {
1320                 scr_printf("*** 1 additional message has been entered "
1321                         "in this room by another user.\n");
1322         }
1323         else if (b > 1) {
1324                 scr_printf("*** %d additional messages have been entered "
1325                         "in this room by other users.\n", b);
1326         }
1327     free(message.text);
1328
1329         return(0);
1330 }
1331
1332 /*
1333  * Do editing on a quoted file
1334  */
1335 void process_quote(void)
1336 {
1337         FILE *qfile, *tfile;
1338         char buf[128];
1339         int line, qstart, qend;
1340
1341         /* Unlink the second temp file as soon as it's opened, so it'll get
1342          * deleted even if the program dies
1343          */
1344         qfile = fopen(temp2, "r");
1345         unlink(temp2);
1346
1347         /* Display the quotable text with line numbers added */
1348         line = 0;
1349         if (fgets(buf, 128, qfile) == NULL) {
1350                 /* we're skipping a line here */
1351         }
1352         while (fgets(buf, 128, qfile) != NULL) {
1353                 scr_printf("%3d %s", ++line, buf);
1354         }
1355
1356         qstart = intprompt("Begin quoting at", 1, 1, line);
1357         qend = intprompt("  End quoting at", line, qstart, line);
1358
1359         rewind(qfile);
1360         line = 0;
1361         if (fgets(buf, 128, qfile) == NULL) {
1362                 /* we're skipping a line here */
1363         }
1364         tfile = fopen(temp, "w");
1365         while (fgets(buf, 128, qfile) != NULL) {
1366                 if ((++line >= qstart) && (line <= qend))
1367                         fprintf(tfile, " >%s", buf);
1368         }
1369         fprintf(tfile, " \n");
1370         fclose(qfile);
1371         fclose(tfile);
1372         chmod(temp, 0666);
1373 }
1374
1375
1376
1377 /*
1378  * List the URL's which were embedded in the previous message
1379  */
1380 void list_urls(CtdlIPC *ipc)
1381 {
1382         int i;
1383         char cmd[SIZ];
1384         int rv;
1385
1386         if (num_urls == 0) {
1387                 scr_printf("There were no URL's in the previous message.\n\n");
1388                 return;
1389         }
1390
1391         for (i = 0; i < num_urls; ++i) {
1392                 scr_printf("%3d %s\n", i + 1, urls[i]);
1393         }
1394
1395         if ((i = num_urls) != 1)
1396                 i = intprompt("Display which one", 1, 1, num_urls);
1397
1398         snprintf(cmd, sizeof cmd, rc_url_cmd, urls[i - 1]);
1399         rv = system(cmd);
1400         if (rv != 0)
1401                 scr_printf("failed to '%s' by %d\n", cmd, rv);
1402         scr_printf("\n");
1403 }
1404
1405
1406 /*
1407  * Run image viewer in background
1408  */
1409 int do_image_view(const char *filename)
1410 {
1411         char cmd[SIZ];
1412         pid_t childpid;
1413
1414         snprintf(cmd, sizeof cmd, imagecmd, filename);
1415         childpid = fork();
1416         if (childpid < 0) {
1417                 unlink(filename);
1418                 return childpid;
1419         }
1420
1421         if (childpid == 0) {
1422                 int retcode;
1423                 pid_t grandchildpid;
1424
1425                 grandchildpid = fork();
1426                 if (grandchildpid < 0) {
1427                         return grandchildpid;
1428                 }
1429
1430                 if (grandchildpid == 0) {
1431                         int nullfd;
1432                         int outfd = -1;
1433                         int errfd = -1;
1434
1435                         nullfd = open("/dev/null", O_WRONLY);
1436                         if (nullfd > -1) {
1437                                 dup2(1, outfd);
1438                                 dup2(2, errfd);
1439                                 dup2(nullfd, 1);
1440                                 dup2(nullfd, 2);
1441                         }
1442                         retcode = system(cmd);
1443                         if (nullfd > -1) {
1444                                 dup2(outfd, 1);
1445                                 dup2(errfd, 2);
1446                                 close(nullfd);
1447                         }
1448                         unlink(filename);
1449                         exit(retcode);
1450                 }
1451
1452                 if (grandchildpid > 0) {
1453                         exit(0);
1454                 }
1455         }
1456
1457         if (childpid > 0) {
1458                 int retcode;
1459
1460                 waitpid(childpid, &retcode, 0);
1461                 return retcode;
1462         }
1463
1464         return -1;
1465 }
1466
1467
1468 /*
1469  * View an image attached to a message
1470  */
1471 void image_view(CtdlIPC *ipc, unsigned long msg)
1472 {
1473         struct parts *ptr = last_message_parts;
1474         char part[SIZ];
1475         int found = 0;
1476
1477         /* Run through available parts */
1478         for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1479                 if ((!strcasecmp(ptr->disposition, "attachment")
1480                    || !strcasecmp(ptr->disposition, "inline"))
1481                    && !strncmp(ptr->mimetype, "image/", 6)) {
1482                         found++;
1483                         if (found == 1) {
1484                                 strcpy(part, ptr->number);
1485                         }
1486                 }
1487         }
1488
1489         while (found > 0) {
1490                 if (found > 1)
1491                         strprompt("View which part (0 when done)", part, SIZ-1);
1492                 found = -found;
1493                 for (ptr = last_message_parts; ptr; ptr = ptr->next) {
1494                         if ((!strcasecmp(ptr->disposition, "attachment")
1495                            || !strcasecmp(ptr->disposition, "inline"))
1496                            && !strncmp(ptr->mimetype, "image/", 6)
1497                            && !strcasecmp(ptr->number, part)) {
1498                                 char tmp[PATH_MAX];
1499                                 char buf[SIZ];
1500                                 void *file = NULL; /* The downloaded file */
1501                                 int r;
1502
1503                                 /* view image */
1504                                 found = -found;
1505                                 r = CtdlIPCAttachmentDownload(ipc, msg, ptr->number, &file, progress, buf);
1506                                 if (r / 100 != 2) {
1507                                         scr_printf("%s\n", buf);
1508                                 } else {
1509                                         size_t len;
1510
1511                                         len = (size_t)extract_long(buf, 0);
1512                                         progress(ipc, len, len);
1513                                         scr_flush();
1514                                         CtdlMakeTempFileName(tmp, sizeof tmp);
1515                                         strcat(tmp, ptr->filename);
1516                                         save_buffer(file, len, tmp);
1517                                         free(file);
1518                                         do_image_view(tmp);
1519                                 }
1520                                 break;
1521                         }
1522                 }
1523                 if (found == 1)
1524                         break;
1525         }
1526 }
1527
1528
1529 /*
1530  * Read the messages in the current room
1531  */
1532 void readmsgs(CtdlIPC *ipc,
1533         enum MessageList c,             /* see listing in citadel_ipc.h */
1534         enum MessageDirection rdir,     /* 1=Forward (-1)=Reverse */
1535         int q           /* Number of msgs to read (if c==3) */
1536 ) {
1537         int a, e, f, g, start;
1538         int savedpos;
1539         int hold_sw = 0;
1540         char arcflag = 0;
1541         char quotflag = 0;
1542         int hold_color = 0;
1543         char prtfile[PATH_MAX];
1544         char pagin;
1545         char cmd[SIZ];
1546         char targ[ROOMNAMELEN];
1547         char filename[PATH_MAX];
1548         char save_to[PATH_MAX];
1549         void *attachment = NULL;        /* Downloaded attachment */
1550         FILE *dest = NULL;              /* Alternate destination other than screen */
1551         int r;                          /* IPC response code */
1552         static int att_seq = 0;         /* Attachment download sequence number */
1553         int rv = 0;                     /* silence the stupid warn_unused_result warnings */
1554
1555         CtdlMakeTempFileName(prtfile, sizeof prtfile);
1556
1557         if (msg_arr) {
1558                 free(msg_arr);
1559                 msg_arr = NULL;
1560         }
1561         r = CtdlIPCGetMessages(ipc, c, q, NULL, &msg_arr, cmd);
1562         if (r / 100 != 1) {
1563                 scr_printf("%s\n", cmd);
1564         } else {
1565                 for (num_msgs = 0; msg_arr[num_msgs]; num_msgs++)
1566                         ;
1567         }
1568
1569         if (num_msgs == 0) {    /* TODO look at this later */
1570                 if (c == LastMessages) return;
1571                 scr_printf("*** There are no ");
1572                 if (c == NewMessages) scr_printf("new ");
1573                 if (c == OldMessages) scr_printf("old ");
1574                 scr_printf("messages in this room.\n");
1575                 return;
1576         }
1577
1578         /* this loop cycles through each message... */
1579         start = ((rdir == 1) ? 0 : (num_msgs - 1));
1580         for (a = start; ((a < num_msgs) && (a >= 0)); a = a + rdir) {
1581                 while (msg_arr[a] == 0L) {
1582                         a = a + rdir;
1583                         if ((a == num_msgs) || (a == (-1)))
1584                                 return;
1585                 }
1586
1587 RAGAIN:         pagin = ((arcflag == 0)
1588                          && (quotflag == 0)
1589                          && (userflags & US_PAGINATOR)) ? 1 : 0;
1590
1591                 /* If we're doing a quote, set the screenwidth to 72 */
1592                 if (quotflag) {
1593                         hold_sw = screenwidth;
1594                         screenwidth = 72;
1595                 }
1596
1597                 /* If printing or archiving, set the screenwidth to 80 */
1598                 if (arcflag) {
1599                         hold_sw = screenwidth;
1600                         screenwidth = 80;
1601                 }
1602
1603                 /* clear parts list */
1604                 free_parts(last_message_parts);
1605                 last_message_parts = NULL;
1606
1607                 /* now read the message... */
1608                 e = read_message(ipc, msg_arr[a], pagin, dest);
1609
1610                 /* ...and set the screenwidth back if we have to */
1611                 if ((quotflag) || (arcflag)) {
1612                         screenwidth = hold_sw;
1613                 }
1614 RMSGREAD:
1615                 highest_msg_read = msg_arr[a];
1616                 if (quotflag) {
1617                         fclose(dest);
1618                         dest = NULL;
1619                         quotflag = 0;
1620                         enable_color = hold_color;
1621                         process_quote();
1622                         e = 'r';
1623                         goto DONE_QUOTING;
1624                 }
1625                 if (arcflag) {
1626                         fclose(dest);
1627                         dest = NULL;
1628                         arcflag = 0;
1629                         enable_color = hold_color;
1630                         f = fork();
1631                         if (f == 0) {
1632                                 if (freopen(prtfile, "r", stdin) == NULL) {
1633                                         /* we probably should handle the error condition here */
1634                                 }
1635                                 stty_ctdl(SB_RESTORE);
1636                                 ka_system(printcmd);
1637                                 stty_ctdl(SB_NO_INTR);
1638                                 unlink(prtfile);
1639                                 exit(0);
1640                         }
1641                         if (f > 0)
1642                                 do {
1643                                         g = wait(NULL);
1644                                 } while ((g != f) && (g >= 0));
1645                         scr_printf("Message printed.\n");
1646                 }
1647                 if (e == SIGQUIT)
1648                         return;
1649                 if (((userflags & US_NOPROMPT) || (e == SIGINT))
1650                         && (((room_flags & QR_MAILBOX) == 0)
1651                         || (rc_force_mail_prompts == 0))) {
1652                         e = 'n';
1653                 } else {
1654                         color(DIM_WHITE);
1655                         scr_printf("(");
1656                         color(BRIGHT_WHITE);
1657                         scr_printf("%d", num_msgs - a - 1);
1658                         color(DIM_WHITE);
1659                         scr_printf(") ");
1660
1661                         keyopt("<B>ack <A>gain <R>eply reply<Q>uoted <N>ext <S>top ");
1662                         if (rc_url_cmd[0] && num_urls)
1663                                 keyopt("<U>RLview ");
1664                         if (has_images > 0 && !IsEmptyStr(imagecmd))
1665                                 keyopt("<I>mages ");
1666                         keyopt("<?>help -> ");
1667
1668                         do {
1669                                 e = (inkey() & 127);
1670                                 e = tolower(e);
1671 /* return key same as <N> */ if (e == 10)
1672                                         e = 'n';
1673 /* space key same as <N> */ if (e == 32)
1674                                         e = 'n';
1675 /* del/move for aides only */
1676                                     if (  (!is_room_aide)
1677                                        && ((room_flags & QR_MAILBOX) == 0)
1678                                        && ((room_flags2 & QR2_COLLABDEL) == 0)
1679                                        ) {
1680                                         if ((e == 'd') || (e == 'm'))
1681                                                 e = 0;
1682                                 }
1683 /* print only if available */
1684                                 if ((e == 'p') && (IsEmptyStr(printcmd)))
1685                                         e = 0;
1686 /* can't file if not allowed */
1687                                     if ((e == 'f')
1688                                         && (rc_allow_attachments == 0))
1689                                         e = 0;
1690 /* link only if browser avail*/
1691                                     if ((e == 'u')
1692                                         && (IsEmptyStr(rc_url_cmd)))
1693                                         e = 0;
1694                                 if ((e == 'i')
1695                                         && (IsEmptyStr(imagecmd) || !has_images))
1696                                         e = 0;
1697                         } while ((e != 'a') && (e != 'n') && (e != 's')
1698                                  && (e != 'd') && (e != 'm') && (e != 'p')
1699                                  && (e != 'q') && (e != 'b') && (e != 'h')
1700                                  && (e != 'r') && (e != 'f') && (e != '?')
1701                                  && (e != 'u') && (e != 'c') && (e != 'y')
1702                                  && (e != 'i') && (e != 'o') );
1703                         switch (e) {
1704                         case 's':
1705                                 scr_printf("Stop");
1706                                 break;
1707                         case 'a':
1708                                 scr_printf("Again");
1709                                 break;
1710                         case 'd':
1711                                 scr_printf("Delete");
1712                                 break;
1713                         case 'm':
1714                                 scr_printf("Move");
1715                                 break;
1716                         case 'c':
1717                                 scr_printf("Copy");
1718                                 break;
1719                         case 'n':
1720                                 scr_printf("Next");
1721                                 break;
1722                         case 'p':
1723                                 scr_printf("Print");
1724                                 break;
1725                         case 'q':
1726                                 scr_printf("reply Quoted");
1727                                 break;
1728                         case 'b':
1729                                 scr_printf("Back");
1730                                 break;
1731                         case 'h':
1732                                 scr_printf("Header");
1733                                 break;
1734                         case 'r':
1735                                 scr_printf("Reply");
1736                                 break;
1737                         case 'o':
1738                                 scr_printf("Open attachments");
1739                                 break;
1740                         case 'f':
1741                                 scr_printf("File");
1742                                 break;
1743                         case 'u':
1744                                 scr_printf("URL's");
1745                                 break;
1746                         case 'y':
1747                                 scr_printf("mY next");
1748                                 break;
1749                         case 'i':
1750                                 break;
1751                         case '?':
1752                                 scr_printf("? <help>");
1753                                 break;
1754                         }
1755                         if (userflags & US_DISAPPEAR || e == 'i')
1756                                 scr_printf("\r%79s\r", "");
1757                         else
1758                                 scr_printf("\n");
1759                 }
1760 DONE_QUOTING:   switch (e) {
1761                 case '?':
1762                         scr_printf("Options available here:\n"
1763                                 " ?  Help (prints this message)\n"
1764                                 " S  Stop reading immediately\n"
1765                                 " A  Again (repeats last message)\n"
1766                                 " N  Next (continue with next message)\n"
1767                                 " Y  My Next (continue with next message you authored)\n"
1768                                 " B  Back (go back to previous message)\n");
1769                         if (  (is_room_aide)
1770                            || (room_flags & QR_MAILBOX)
1771                            || (room_flags2 & QR2_COLLABDEL)
1772                         ) {
1773                                 scr_printf(" D  Delete this message\n"
1774                                         " M  Move message to another room\n");
1775                         }
1776                         scr_printf(" C  Copy message to another room\n");
1777                         if (!IsEmptyStr(printcmd))
1778                                 scr_printf(" P  Print this message\n");
1779                         scr_printf(
1780                                 " Q  Reply to this message, quoting portions of it\n"
1781                                 " H  Headers (display message headers only)\n");
1782                         if (is_mail)
1783                                 scr_printf(" R  Reply to this message\n");
1784                         if (rc_allow_attachments) {
1785                                 scr_printf(" O  (Open attachments)\n");
1786                                 scr_printf(" F  (save attachments to a File)\n");
1787                         }
1788                         if (!IsEmptyStr(rc_url_cmd))
1789                                 scr_printf(" U  (list URL's for display)\n");
1790                         if (!IsEmptyStr(imagecmd) && has_images > 0)
1791                                 scr_printf(" I  Image viewer\n");
1792                         scr_printf("\n");
1793                         goto RMSGREAD;
1794                 case 'p':
1795                         scr_flush();
1796                         dest = fopen(prtfile, "w");
1797                         arcflag = 1;
1798                         hold_color = enable_color;
1799                         enable_color = 0;
1800                         goto RAGAIN;
1801                 case 'q':
1802                         scr_flush();
1803                         dest = fopen(temp2, "w");
1804                         quotflag = 1;
1805                         hold_color = enable_color;
1806                         enable_color = 0;
1807                         goto RAGAIN;
1808                 case 's':
1809                         return;
1810                 case 'a':
1811                         goto RAGAIN;
1812                 case 'b':
1813                         a = a - (rdir * 2);
1814                         break;
1815                 case 'm':
1816                 case 'c':
1817                         newprompt("Enter target room: ",
1818                                   targ, ROOMNAMELEN - 1);
1819                         if (!IsEmptyStr(targ)) {
1820                                 r = CtdlIPCMoveMessage(ipc, (e == 'c' ? 1 : 0),
1821                                                        msg_arr[a], targ, cmd);
1822                                 scr_printf("%s\n", cmd);
1823                                 if (r / 100 == 2)
1824                                         msg_arr[a] = 0L;
1825                         } else {
1826                                 goto RMSGREAD;
1827                         }
1828                         if (r / 100 != 2)       /* r will be init'ed, FIXME */
1829                                 goto RMSGREAD;  /* the logic here sucks */
1830                         break;
1831                 case 'o':
1832                 case 'f':
1833                         newprompt("Which section? ", filename, ((sizeof filename) - 1));
1834                         r = CtdlIPCAttachmentDownload(ipc, msg_arr[a],
1835                                         filename, &attachment, progress, cmd);
1836                         if (r / 100 != 2) {
1837                                 scr_printf("%s\n", cmd);
1838                         } else {
1839                                 extract_token(filename, cmd, 2, '|', sizeof filename);
1840                                 /*
1841                                  * Part 1 won't have a filename; use the
1842                                  * subject of the message instead. IO
1843                                  */
1844                                 if (IsEmptyStr(filename)) {
1845                                         strcpy(filename, reply_subject);
1846                                 }
1847                                 if (e == 'o') {         /* open attachment */
1848                                         mkdir(tempdir, 0700);
1849                                         snprintf(save_to, sizeof save_to, "%s/%04x.%s",
1850                                                 tempdir,
1851                                                 ++att_seq,
1852                                                 filename);
1853                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1854                                         snprintf(cmd, sizeof cmd, rc_open_cmd, save_to);
1855                                         rv = system(cmd);
1856                                         if (rv != 0)
1857                                                 scr_printf("failed to save %s Reason %d\n", cmd, rv);
1858                                 }
1859                                 else {                  /* save attachment to disk */
1860                                         destination_directory(save_to, filename);
1861                                         save_buffer(attachment, extract_unsigned_long(cmd, 0), save_to);
1862                                 }
1863                         }
1864                         if (attachment) {
1865                                 free(attachment);
1866                                 attachment = NULL;
1867                         }
1868                         goto RMSGREAD;
1869                 case 'd':
1870                         scr_printf("*** Delete this message? ");
1871                         if (yesno() == 1) {
1872                                 r = CtdlIPCDeleteMessage(ipc, msg_arr[a], cmd);
1873                                 scr_printf("%s\n", cmd);
1874                                 if (r / 100 == 2)
1875                                         msg_arr[a] = 0L;
1876                         } else {
1877                                 goto RMSGREAD;
1878                         }
1879                         break;
1880                 case 'h':
1881                         read_message(ipc, msg_arr[a], READ_HEADER, NULL);
1882                         goto RMSGREAD;
1883                 case 'r':
1884                         savedpos = num_msgs;
1885                         entmsg(ipc, 1, ((userflags & US_EXTEDIT) ? 2 : 0), 0);
1886                         num_msgs = savedpos;
1887                         goto RMSGREAD;
1888                 case 'u':
1889                         list_urls(ipc);
1890                         goto RMSGREAD;
1891                 case 'i':
1892                         image_view(ipc, msg_arr[a]);
1893                         goto RMSGREAD;
1894             case 'y':
1895           { /* hack hack hack */
1896             /* find the next message by me, stay here if we find nothing */
1897             int finda;
1898             int lasta = a;
1899             for (finda = (a + rdir); ((finda < num_msgs) && (finda >= 0)); finda += rdir)
1900               {
1901                 /* This is repetitively dumb, but that's what computers are for.
1902                    We have to load up messages until we find one by us */
1903                 char buf[SIZ];
1904                 int founda = 0;
1905                 struct ctdlipcmessage *msg = NULL;
1906
1907                 /* read the header so we can get 'from=' */
1908                 r = CtdlIPCGetSingleMessage(ipc, msg_arr[finda], 1, 0, &msg, buf);
1909                 if (!strncasecmp(msg->author, fullname, sizeof(fullname))) {
1910                         a = lasta; /* meesa current */
1911                         founda = 1;
1912                 }
1913
1914                 free(msg);
1915
1916                 if (founda)
1917                         break; /* for */
1918                 lasta = finda; /* keep one behind or we skip on the reentrance to the for */
1919               } /* for */
1920           } /* case 'y' */
1921       } /* switch */
1922         }                       /* end for loop */
1923 }                               /* end read routine */
1924
1925
1926
1927
1928 /*
1929  * View and edit a system message
1930  */
1931 void edit_system_message(CtdlIPC *ipc, char *which_message)
1932 {
1933         char desc[SIZ];
1934         char read_cmd[SIZ];
1935         char write_cmd[SIZ];
1936
1937         snprintf(desc, sizeof desc, "system message '%s'", which_message);
1938         snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
1939         snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);
1940         do_edit(ipc, desc, read_cmd, "NOOP", write_cmd);
1941 }
1942
1943
1944
1945
1946 /*
1947  * Loads the contents of a file into memory.  Caller must free the allocated
1948  * memory.
1949  */
1950 char *load_message_from_file(FILE *src)
1951 {
1952         size_t i;
1953         size_t got = 0;
1954         char *dest = NULL;
1955
1956         fseek(src, 0, SEEK_END);
1957         i = ftell(src);
1958         rewind(src);
1959
1960         dest = (char *)calloc(1, i + 1);
1961         if (!dest)
1962                 return NULL;
1963
1964         while (got < i) {
1965                 size_t g;
1966
1967                 g = fread(dest + got, 1, i - got, src);
1968                 got += g;
1969                 if (g < i - got) {
1970                         /* Interrupted system call, keep going */
1971                         if (errno == EINTR)
1972                                 continue;
1973                         /* At this point we have either EOF or error */
1974                         i = got;
1975                         break;
1976                 }
1977                 dest[i] = 0;
1978         }
1979
1980         return dest;
1981 }