diplodocus.org Git - nmh/blob - uip/mhn.c

   1
   2 /*
   3  * mhn.c -- display, list, cache, or store the contents of MIME messages
   4  *
   5  * $Id$
   6  */
   7
   8 #include <h/mh.h>
   9 #include <fcntl.h>
  10 #include <h/signals.h>
  11 #include <h/md5.h>
  12 #include <errno.h>
  13 #include <signal.h>
  14 #include <zotnet/mts/mts.h>
  15 #include <zotnet/tws/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/mhcachesbr.h>
  19
  20 #ifdef HAVE_SYS_WAIT_H
  21 # include <sys/wait.h>
  22 #endif
  23
  24 /*
  25  * We allocate space for message names (msgs array)
  26  * this number of elements at a time.
  27  */
  28 #define MAXMSGS  256
  29
  30
  31 static struct swit switches[] = {
  32 #define AUTOSW                  0
  33     { "auto", 0 },
  34 #define NAUTOSW                 1
  35     { "noauto", 0 },
  36 #define CACHESW                 2
  37     { "cache", 0 },
  38 #define NCACHESW                3
  39     { "nocache", 0 },
  40 #define CHECKSW                 4
  41     { "check", 0 },
  42 #define NCHECKSW                5
  43     { "nocheck", 0 },
  44 #define HEADSW                  6
  45     { "headers", 0 },
  46 #define NHEADSW                 7
  47     { "noheaders", 0 },
  48 #define LISTSW                  8
  49     { "list", 0 },
  50 #define NLISTSW                 9
  51     { "nolist", 0 },
  52 #define PAUSESW                10
  53     { "pause", 0 },
  54 #define NPAUSESW               11
  55     { "nopause", 0 },
  56 #define SIZESW                 12
  57     { "realsize", 0 },
  58 #define NSIZESW                13
  59     { "norealsize", 0 },
  60 #define SERIALSW               14
  61     { "serialonly", 0 },
  62 #define NSERIALSW              15
  63     { "noserialonly", 0 },
  64 #define SHOWSW                 16
  65     { "show", 0 },
  66 #define NSHOWSW                17
  67     { "noshow", 0 },
  68 #define STORESW                18
  69     { "store", 0 },
  70 #define NSTORESW               19
  71     { "nostore", 0 },
  72 #define VERBSW                 20
  73     { "verbose", 0 },
  74 #define NVERBSW                21
  75     { "noverbose", 0 },
  76 #define FILESW                 22       /* interface from show */
  77     { "file file", 0 },
  78 #define FORMSW                 23
  79     { "form formfile", 0 },
  80 #define PARTSW                 24
  81     { "part number", 0 },
  82 #define TYPESW                 25
  83     { "type content", 0 },
  84 #define RCACHESW               26
  85     { "rcache policy", 0 },
  86 #define WCACHESW               27
  87     { "wcache policy", 0 },
  88 #define VERSIONSW              28
  89     { "version", 0 },
  90 #define HELPSW                 29
  91     { "help", 0 },
  92
  93 /*
  94  * switches for debugging
  95  */
  96 #define DEBUGSW                30
  97     { "debug", -5 },
  98
  99 /*
 100  * switches for moreproc/mhlproc
 101  */
 102 #define PROGSW                 31
 103     { "moreproc program", -4 },
 104 #define NPROGSW                32
 105     { "nomoreproc", -3 },
 106 #define LENSW                  33
 107     { "length lines", -4 },
 108 #define WIDTHSW                34
 109     { "width columns", -4 },
 110
 111 /*
 112  * switches for mhbuild
 113  */
 114 #define BUILDSW                35
 115     { "build", -5 },
 116 #define NBUILDSW               36
 117     { "nobuild", -7 },
 118 #define EBCDICSW               37
 119     { "ebcdicsafe", -10 },
 120 #define NEBCDICSW              38
 121     { "noebcdicsafe", -12 },
 122 #define RFC934SW               39
 123     { "rfc934mode", -10 },
 124 #define NRFC934SW              40
 125     { "norfc934mode", -12 },
 126     { NULL, 0 }
 127 };
 128
 129
 130 extern int errno;
 131
 132 /* mhparse.c */
 133 extern int checksw;
 134 extern char *tmp;       /* directory to place temp files */
 135
 136 /* mhcachesbr.c */
 137 extern int rcachesw;
 138 extern int wcachesw;
 139 extern char *cache_public;
 140 extern char *cache_private;
 141
 142 /* mhshowsbr.c */
 143 extern int pausesw;
 144 extern int serialsw;
 145 extern char *progsw;
 146 extern int nolist;
 147 extern int nomore;      /* flags for moreproc/header display */
 148 extern char *formsw;
 149
 150 /* mhstoresbr.c */
 151 extern int autosw;
 152 extern char *cwd;       /* cache current working directory */
 153
 154 /* mhmisc.c */
 155 extern int npart;
 156 extern int ntype;
 157 extern char *parts[NPARTS + 1];
 158 extern char *types[NTYPES + 1];
 159 extern int userrs;
 160
 161 int debugsw = 0;
 162 int verbosw = 0;
 163
 164 /* The list of top-level contents to display */
 165 CT *cts = NULL;
 166
 167 /*
 168  * variables for mhbuild (mhn -build)
 169  */
 170 static int buildsw  = 0;
 171 static int ebcdicsw = 0;
 172 static int rfc934sw = 0;
 173
 174 /*
 175  * what action to take?
 176  */
 177 static int cachesw = 0;
 178 static int listsw  = 0;
 179 static int showsw  = 0;
 180 static int storesw = 0;
 181
 182 #define quitser pipeser
 183
 184 /* mhparse.c */
 185 CT parse_mime (char *);
 186
 187 /* mhmisc.c */
 188 int part_ok (CT, int);
 189 int type_ok (CT, int);
 190 void set_endian (void);
 191 void flush_errors (void);
 192
 193 /* mhshowsbr.c */
 194 void show_all_messages (CT *);
 195
 196 /* mhlistsbr.c */
 197 void list_all_messages (CT *, int, int, int, int);
 198
 199 /* mhstoresbr.c */
 200 void store_all_messages (CT *);
 201
 202 /* mhcachesbr.c */
 203 void cache_all_messages (CT *);
 204
 205 /* mhfree.c */
 206 void free_content (CT);
 207
 208 /*
 209  * static prototypes
 210  */
 211 static RETSIGTYPE pipeser (int);
 212
 213
 214 int
 215 main (int argc, char **argv)
 216 {
 217     int sizesw = 1, headsw = 1;
 218     int nummsgs, maxmsgs, msgnum, *icachesw;
 219     char *cp, *file = NULL, *folder = NULL;
 220     char *maildir, buf[100], **argp;
 221     char **arguments, **msgs;
 222     struct msgs *mp = NULL;
 223     CT ct, *ctp;
 224     FILE *fp;
 225
 226 #ifdef LOCALE
 227     setlocale(LC_ALL, "");
 228 #endif
 229     invo_name = r1bindex (argv[0], '/');
 230
 231     /* read user profile/context */
 232     context_read();
 233
 234     arguments = getarguments (invo_name, argc, argv, 1);
 235     argp = arguments;
 236
 237     /*
 238      * Allocate the initial space to record message
 239      * names, ranges, and sequences.
 240      */
 241     nummsgs = 0;
 242     maxmsgs = MAXMSGS;
 243     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 244         adios (NULL, "unable to allocate storage");
 245
 246     /*
 247      * Parse arguments
 248      */
 249     while ((cp = *argp++)) {
 250         if (*cp == '-') {
 251             switch (smatch (++cp, switches)) {
 252             case AMBIGSW:
 253                 ambigsw (cp, switches);
 254                 done (1);
 255             case UNKWNSW:
 256                 adios (NULL, "-%s unknown", cp);
 257
 258             case HELPSW:
 259                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 260                         invo_name);
 261                 print_help (buf, switches, 1);
 262                 done (1);
 263             case VERSIONSW:
 264                 print_version(invo_name);
 265                 done (1);
 266
 267             case AUTOSW:
 268                 autosw++;
 269                 continue;
 270             case NAUTOSW:
 271                 autosw = 0;
 272                 continue;
 273
 274             case CACHESW:
 275                 cachesw++;
 276                 continue;
 277             case NCACHESW:
 278                 cachesw = 0;
 279                 continue;
 280
 281             case RCACHESW:
 282                 icachesw = &rcachesw;
 283                 goto do_cache;
 284             case WCACHESW:
 285                 icachesw = &wcachesw;
 286 do_cache:
 287                 if (!(cp = *argp++) || *cp == '-')
 288                     adios (NULL, "missing argument to %s", argp[-2]);
 289                 switch (*icachesw = smatch (cp, caches)) {
 290                 case AMBIGSW:
 291                     ambigsw (cp, caches);
 292                     done (1);
 293                 case UNKWNSW:
 294                     adios (NULL, "%s unknown", cp);
 295                 default:
 296                     break;
 297                 }
 298                 continue;
 299
 300             case CHECKSW:
 301                 checksw++;
 302                 continue;
 303             case NCHECKSW:
 304                 checksw = 0;
 305                 continue;
 306
 307             case HEADSW:
 308                 headsw = 1;
 309                 continue;
 310             case NHEADSW:
 311                 headsw = 0;
 312                 continue;
 313
 314             case LISTSW:
 315                 listsw = 1;
 316                 continue;
 317             case NLISTSW:
 318                 listsw = 0;
 319                 continue;
 320
 321             case PAUSESW:
 322                 pausesw = 1;
 323                 continue;
 324             case NPAUSESW:
 325                 pausesw = 0;
 326                 continue;
 327
 328             case SERIALSW:
 329                 serialsw = 1;
 330                 continue;
 331             case NSERIALSW:
 332                 serialsw = 0;
 333                 continue;
 334
 335             case SHOWSW:
 336                 showsw = 1;
 337                 continue;
 338             case NSHOWSW:
 339                 showsw = 0;
 340                 continue;
 341
 342             case SIZESW:
 343                 sizesw = 1;
 344                 continue;
 345             case NSIZESW:
 346                 sizesw = 0;
 347                 continue;
 348
 349             case STORESW:
 350                 storesw = 1;
 351                 continue;
 352             case NSTORESW:
 353                 storesw = 0;
 354                 continue;
 355
 356             case PARTSW:
 357                 if (!(cp = *argp++) || *cp == '-')
 358                     adios (NULL, "missing argument to %s", argp[-2]);
 359                 if (npart >= NPARTS)
 360                     adios (NULL, "too many parts (starting with %s), %d max",
 361                            cp, NPARTS);
 362                 parts[npart++] = cp;
 363                 continue;
 364
 365             case TYPESW:
 366                 if (!(cp = *argp++) || *cp == '-')
 367                     adios (NULL, "missing argument to %s", argp[-2]);
 368                 if (ntype >= NTYPES)
 369                     adios (NULL, "too many types (starting with %s), %d max",
 370                            cp, NTYPES);
 371                 types[ntype++] = cp;
 372                 continue;
 373
 374             case FILESW:
 375                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 376                     adios (NULL, "missing argument to %s", argp[-2]);
 377                 file = *cp == '-' ? cp : path (cp, TFILE);
 378                 continue;
 379
 380             case FORMSW:
 381                 if (!(cp = *argp++) || *cp == '-')
 382                     adios (NULL, "missing argument to %s", argp[-2]);
 383                 if (formsw)
 384                     free (formsw);
 385                 formsw = getcpy (etcpath (cp));
 386                 continue;
 387
 388             /*
 389              * Switches for moreproc/mhlproc
 390              */
 391             case PROGSW:
 392                 if (!(progsw = *argp++) || *progsw == '-')
 393                     adios (NULL, "missing argument to %s", argp[-2]);
 394                 continue;
 395             case NPROGSW:
 396                 nomore++;
 397                 continue;
 398
 399             case LENSW:
 400             case WIDTHSW:
 401                 if (!(cp = *argp++) || *cp == '-')
 402                     adios (NULL, "missing argument to %s", argp[-2]);
 403                 continue;
 404
 405             /*
 406              * Switches for mhbuild
 407              */
 408             case BUILDSW:
 409                 buildsw = 1;
 410                 continue;
 411             case NBUILDSW:
 412                 buildsw = 0;
 413                 continue;
 414             case RFC934SW:
 415                 rfc934sw = 1;
 416                 continue;
 417             case NRFC934SW:
 418                 rfc934sw = -1;
 419                 continue;
 420             case EBCDICSW:
 421                 ebcdicsw = 1;
 422                 continue;
 423             case NEBCDICSW:
 424                 ebcdicsw = -1;
 425                 continue;
 426
 427             case VERBSW:
 428                 verbosw = 1;
 429                 continue;
 430             case NVERBSW:
 431                 verbosw = 0;
 432                 continue;
 433             case DEBUGSW:
 434                 debugsw = 1;
 435                 continue;
 436             }
 437         }
 438         if (*cp == '+' || *cp == '@') {
 439             if (folder)
 440                 adios (NULL, "only one folder at a time!");
 441             else
 442                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 443         } else {
 444             /*
 445              * Check if we need to allocate more space
 446              * for message names/ranges/sequences.
 447              */
 448             if (nummsgs >= maxmsgs) {
 449                 maxmsgs += MAXMSGS;
 450                 if (!(msgs = (char **) realloc (msgs,
 451                         (size_t) (maxmsgs * sizeof(*msgs)))))
 452                     adios (NULL, "unable to reallocate msgs storage");
 453             }
 454             msgs[nummsgs++] = cp;
 455         }
 456     }
 457
 458     /* null terminate the list of acceptable parts/types */
 459     parts[npart] = NULL;
 460     types[ntype] = NULL;
 461
 462     set_endian ();
 463
 464     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 465         nolist  = 1;
 466         listsw  = 0;
 467         pausesw = 0;
 468     }
 469
 470     /*
 471      * Check if we've specified an additional profile
 472      */
 473     if ((cp = getenv ("MHN"))) {
 474         if ((fp = fopen (cp, "r"))) {
 475             readconfig ((struct node **) 0, fp, cp, 0);
 476             fclose (fp);
 477         } else {
 478             admonish ("", "unable to read $MHN profile (%s)", cp);
 479         }
 480     }
 481
 482     /*
 483      * Read the standard profile setup
 484      */
 485     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 486         readconfig ((struct node **) 0, fp, cp, 0);
 487         fclose (fp);
 488     }
 489
 490     /* Check for public cache location */
 491     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 492         cache_public = NULL;
 493
 494     /* Check for private cache location */
 495     if (!(cache_private = context_find (nmhprivcache)))
 496         cache_private = ".cache";
 497     cache_private = getcpy (m_maildir (cache_private));
 498
 499     /*
 500      * Cache the current directory before we do any chdirs()'s.
 501      */
 502     cwd = getcpy (pwd());
 503
 504     /*
 505      * Check for storage directory.  If specified,
 506      * then store temporary files there.  Else we
 507      * store them in standard nmh directory.
 508      */
 509     if ((cp = context_find (nmhstorage)) && *cp)
 510         tmp = concat (cp, "/", invo_name, NULL);
 511     else
 512         tmp = add (m_maildir (invo_name), NULL);
 513
 514     if (!context_find ("path"))
 515         free (path ("./", TFOLDER));
 516
 517     /*
 518      * Process a mhn composition file (mhn -build)
 519      */
 520     if (buildsw) {
 521         char *vec[MAXARGS];
 522         int vecp;
 523
 524         if (showsw || storesw || cachesw)
 525             adios (NULL, "cannot use -build with -show, -store, -cache");
 526         if (nummsgs < 1)
 527             adios (NULL, "need to specify a %s composition file", invo_name);
 528         if (nummsgs > 1)
 529             adios (NULL, "only one %s composition file at a time", invo_name);
 530
 531         vecp = 0;
 532         vec[vecp++] = "mhbuild";
 533
 534         if (ebcdicsw == 1)
 535             vec[vecp++] = "-ebcdicsafe";
 536         else if (ebcdicsw == -1)
 537             vec[vecp++] = "-noebcdicsafe";
 538
 539         if (rfc934sw == 1)
 540             vec[vecp++] = "-rfc934mode";
 541         else if (rfc934sw == -1)
 542             vec[vecp++] = "-norfc934mode";
 543
 544         vec[vecp++] = msgs[0];
 545         vec[vecp] = NULL;
 546
 547         execvp ("mhbuild", vec);
 548         fprintf (stderr, "unable to exec ");
 549         _exit (-1);
 550     }
 551
 552     /*
 553      * Process a mhn composition file (old MH style)
 554      */
 555     if (nummsgs == 1 && !folder && !npart && !cachesw
 556         && !showsw && !storesw && !ntype && !file
 557         && (cp = getenv ("mhdraft"))
 558         && strcmp (cp, msgs[0]) == 0) {
 559
 560         char *vec[MAXARGS];
 561         int vecp;
 562
 563         vecp = 0;
 564         vec[vecp++] = "mhbuild";
 565
 566         if (ebcdicsw == 1)
 567             vec[vecp++] = "-ebcdicsafe";
 568         else if (ebcdicsw == -1)
 569             vec[vecp++] = "-noebcdicsafe";
 570
 571         if (rfc934sw == 1)
 572             vec[vecp++] = "-rfc934mode";
 573         else if (rfc934sw == -1)
 574             vec[vecp++] = "-norfc934mode";
 575
 576         vec[vecp++] = cp;
 577         vec[vecp] = NULL;
 578
 579         execvp ("mhbuild", vec);
 580         fprintf (stderr, "unable to exec ");
 581         _exit (-1);
 582     }
 583
 584     if (file && nummsgs)
 585         adios (NULL, "cannot specify msg and file at same time!");
 586
 587     /*
 588      * check if message is coming from file
 589      */
 590     if (file) {
 591         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 592             adios (NULL, "out of memory");
 593         ctp = cts;
 594
 595         if ((ct = parse_mime (file)));
 596             *ctp++ = ct;
 597     } else {
 598         /*
 599          * message(s) are coming from a folder
 600          */
 601         if (!nummsgs)
 602             msgs[nummsgs++] = "cur";
 603         if (!folder)
 604             folder = getfolder (1);
 605         maildir = m_maildir (folder);
 606
 607         if (chdir (maildir) == NOTOK)
 608             adios (maildir, "unable to change directory to");
 609
 610         /* read folder and create message structure */
 611         if (!(mp = folder_read (folder)))
 612             adios (NULL, "unable to read folder %s", folder);
 613
 614         /* check for empty folder */
 615         if (mp->nummsg == 0)
 616             adios (NULL, "no messages in %s", folder);
 617
 618         /* parse all the message ranges/sequences and set SELECTED */
 619         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 620             if (!m_convert (mp, msgs[msgnum]))
 621                 done (1);
 622         seq_setprev (mp);       /* set the previous-sequence */
 623
 624         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 625             adios (NULL, "out of memory");
 626         ctp = cts;
 627
 628         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 629             if (is_selected(mp, msgnum)) {
 630                 char *msgnam;
 631
 632                 msgnam = m_name (msgnum);
 633                 if ((ct = parse_mime (msgnam)))
 634                     *ctp++ = ct;
 635             }
 636         }
 637     }
 638
 639     if (!*cts)
 640         done (1);
 641
 642     /*
 643      * You can't give more than one of these flags
 644      * at a time.
 645      */
 646     if (showsw + listsw + storesw + cachesw > 1)
 647         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 648
 649     /* If no action is specified, assume -show */
 650     if (!listsw && !showsw && !storesw && !cachesw)
 651         showsw = 1;
 652
 653     userrs = 1;
 654     SIGNAL (SIGQUIT, quitser);
 655     SIGNAL (SIGPIPE, pipeser);
 656
 657     /*
 658      * Get the associated umask for the relevant contents.
 659      */
 660     for (ctp = cts; *ctp; ctp++) {
 661         struct stat st;
 662
 663         ct = *ctp;
 664         if (type_ok (ct, 1) && !ct->c_umask) {
 665             if (stat (ct->c_file, &st) != NOTOK)
 666                 ct->c_umask = ~(st.st_mode & 0777);
 667             else
 668                 ct->c_umask = ~m_gmprot();
 669         }
 670     }
 671
 672     /*
 673      * List the message content
 674      */
 675     if (listsw)
 676         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 677
 678     /*
 679      * Store the message content
 680      */
 681     if (storesw)
 682         store_all_messages (cts);
 683
 684     /*
 685      * Cache the message content
 686      */
 687     if (cachesw)
 688         cache_all_messages (cts);
 689
 690     /*
 691      * Show the message content
 692      */
 693     if (showsw)
 694         show_all_messages (cts);
 695
 696     /* Now free all the structures for the content */
 697     for (ctp = cts; *ctp; ctp++)
 698         free_content (*ctp);
 699
 700     free ((char *) cts);
 701     cts = NULL;
 702
 703     /* If reading from a folder, do some updating */
 704     if (mp) {
 705         context_replace (pfolder, folder);/* update current folder  */
 706         seq_setcur (mp, mp->hghsel);      /* update current message */
 707         seq_save (mp);                    /* synchronize sequences  */
 708         context_save ();                  /* save the context file  */
 709     }
 710
 711     return done (0);
 712 }
 713
 714
 715 static RETSIGTYPE
 716 pipeser (int i)
 717 {
 718     if (i == SIGQUIT) {
 719         unlink ("core");
 720         fflush (stdout);
 721         fprintf (stderr, "\n");
 722         fflush (stderr);
 723     }
 724
 725     done (1);
 726     /* NOTREACHED */
 727 }
 728
 729
 730 int
 731 done (int status)
 732 {
 733     CT *ctp;
 734
 735     if ((ctp = cts))
 736         for (; *ctp; ctp++)
 737             free_content (*ctp);
 738
 739     exit (status);
 740     return 1;  /* dead code to satisfy the compiler */
 741 }