citadel/messages.c

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