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  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/signals.h>
  15 #include <h/md5.h>
  16 #include <errno.h>
  17 #include <signal.h>
  18 #include <h/mts.h>
  19 #include <h/tws.h>
  20 #include <h/mime.h>
  21 #include <h/mhparse.h>
  22 #include <h/mhcachesbr.h>
  23 #include <h/utils.h>
  24
  25 #ifdef HAVE_SYS_WAIT_H
  26 # include <sys/wait.h>
  27 #endif
  28
  29 static struct swit switches[] = {
  30 #define AUTOSW                  0
  31     { "auto", 0 },
  32 #define NAUTOSW                 1
  33     { "noauto", 0 },
  34 #define CACHESW                 2
  35     { "cache", 0 },
  36 #define NCACHESW                3
  37     { "nocache", 0 },
  38 #define CHECKSW                 4
  39     { "check", 0 },
  40 #define NCHECKSW                5
  41     { "nocheck", 0 },
  42 #define HEADSW                  6
  43     { "headers", 0 },
  44 #define NHEADSW                 7
  45     { "noheaders", 0 },
  46 #define LISTSW                  8
  47     { "list", 0 },
  48 #define NLISTSW                 9
  49     { "nolist", 0 },
  50 #define PAUSESW                10
  51     { "pause", 0 },
  52 #define NPAUSESW               11
  53     { "nopause", 0 },
  54 #define SIZESW                 12
  55     { "realsize", 0 },
  56 #define NSIZESW                13
  57     { "norealsize", 0 },
  58 #define SERIALSW               14
  59     { "serialonly", 0 },
  60 #define NSERIALSW              15
  61     { "noserialonly", 0 },
  62 #define SHOWSW                 16
  63     { "show", 0 },
  64 #define NSHOWSW                17
  65     { "noshow", 0 },
  66 #define STORESW                18
  67     { "store", 0 },
  68 #define NSTORESW               19
  69     { "nostore", 0 },
  70 #define VERBSW                 20
  71     { "verbose", 0 },
  72 #define NVERBSW                21
  73     { "noverbose", 0 },
  74 #define FILESW                 22       /* interface from show */
  75     { "file file", 0 },
  76 #define FORMSW                 23
  77     { "form formfile", 0 },
  78 #define PARTSW                 24
  79     { "part number", 0 },
  80 #define TYPESW                 25
  81     { "type content", 0 },
  82 #define RCACHESW               26
  83     { "rcache policy", 0 },
  84 #define WCACHESW               27
  85     { "wcache policy", 0 },
  86 #define VERSIONSW              28
  87     { "version", 0 },
  88 #define HELPSW                 29
  89     { "help", 0 },
  90
  91 /*
  92  * switches for debugging
  93  */
  94 #define DEBUGSW                30
  95     { "debug", -5 },
  96
  97 /*
  98  * switches for moreproc/mhlproc
  99  */
 100 #define PROGSW                 31
 101     { "moreproc program", -4 },
 102 #define NPROGSW                32
 103     { "nomoreproc", -3 },
 104 #define LENSW                  33
 105     { "length lines", -4 },
 106 #define WIDTHSW                34
 107     { "width columns", -4 },
 108
 109 /*
 110  * switches for mhbuild
 111  */
 112 #define BUILDSW                35
 113     { "build", -5 },
 114 #define NBUILDSW               36
 115     { "nobuild", -7 },
 116 #define EBCDICSW               37
 117     { "ebcdicsafe", -10 },
 118 #define NEBCDICSW              38
 119     { "noebcdicsafe", -12 },
 120 #define RFC934SW               39
 121     { "rfc934mode", -10 },
 122 #define NRFC934SW              40
 123     { "norfc934mode", -12 },
 124     { NULL, 0 }
 125 };
 126
 127
 128 /* mhparse.c */
 129 extern char *tmp;       /* directory to place temp files */
 130
 131 /* mhcachesbr.c */
 132 extern int rcachesw;
 133 extern int wcachesw;
 134 extern char *cache_public;
 135 extern char *cache_private;
 136
 137 /* mhshowsbr.c */
 138 extern int pausesw;
 139 extern int serialsw;
 140 extern char *progsw;
 141 extern int nolist;
 142 extern int nomore;      /* flags for moreproc/header display */
 143 extern char *formsw;
 144
 145 /* mhstoresbr.c */
 146 extern int autosw;
 147 extern char *cwd;       /* cache current working directory */
 148
 149 /* mhmisc.c */
 150 extern int npart;
 151 extern int ntype;
 152 extern char *parts[NPARTS + 1];
 153 extern char *types[NTYPES + 1];
 154 extern int userrs;
 155
 156 int debugsw = 0;
 157 int verbosw = 0;
 158
 159 /*
 160  * variables for mhbuild (mhn -build)
 161  */
 162 static int buildsw  = 0;
 163 static int ebcdicsw = 0;
 164 static int rfc934sw = 0;
 165
 166 /*
 167  * what action to take?
 168  */
 169 static int cachesw = 0;
 170 static int listsw  = 0;
 171 static int showsw  = 0;
 172 static int storesw = 0;
 173
 174 #define quitser pipeser
 175
 176 /* mhparse.c */
 177 CT parse_mime (char *);
 178
 179 /* mhmisc.c */
 180 int part_ok (CT, int);
 181 int type_ok (CT, int);
 182 void set_endian (void);
 183 void flush_errors (void);
 184
 185 /* mhshowsbr.c */
 186 void show_all_messages (CT *);
 187
 188 /* mhlistsbr.c */
 189 void list_all_messages (CT *, int, int, int, int);
 190
 191 /* mhstoresbr.c */
 192 void store_all_messages (CT *);
 193
 194 /* mhcachesbr.c */
 195 void cache_all_messages (CT *);
 196
 197 /* mhfree.c */
 198 void free_content (CT);
 199 extern CT *cts;
 200 void freects_done (int) NORETURN;
 201
 202 /*
 203  * static prototypes
 204  */
 205 static RETSIGTYPE pipeser (int);
 206
 207
 208 int
 209 main (int argc, char **argv)
 210 {
 211     int sizesw = 1, headsw = 1;
 212     int msgnum, *icachesw;
 213     char *cp, *file = NULL, *folder = NULL;
 214     char *maildir, buf[100], **argp;
 215     char **arguments;
 216     struct msgs_array msgs = { 0, 0, NULL };
 217     struct msgs *mp = NULL;
 218     CT ct, *ctp;
 219     FILE *fp;
 220
 221     done=freects_done;
 222
 223 #ifdef LOCALE
 224     setlocale(LC_ALL, "");
 225 #endif
 226     invo_name = r1bindex (argv[0], '/');
 227
 228     /* read user profile/context */
 229     context_read();
 230
 231     arguments = getarguments (invo_name, argc, argv, 1);
 232     argp = arguments;
 233
 234     /*
 235      * Parse arguments
 236      */
 237     while ((cp = *argp++)) {
 238         if (*cp == '-') {
 239             switch (smatch (++cp, switches)) {
 240             case AMBIGSW:
 241                 ambigsw (cp, switches);
 242                 done (1);
 243             case UNKWNSW:
 244                 adios (NULL, "-%s unknown", cp);
 245
 246             case HELPSW:
 247                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 248                         invo_name);
 249                 print_help (buf, switches, 1);
 250                 done (1);
 251             case VERSIONSW:
 252                 print_version(invo_name);
 253                 done (1);
 254
 255             case AUTOSW:
 256                 autosw++;
 257                 continue;
 258             case NAUTOSW:
 259                 autosw = 0;
 260                 continue;
 261
 262             case CACHESW:
 263                 cachesw++;
 264                 continue;
 265             case NCACHESW:
 266                 cachesw = 0;
 267                 continue;
 268
 269             case RCACHESW:
 270                 icachesw = &rcachesw;
 271                 goto do_cache;
 272             case WCACHESW:
 273                 icachesw = &wcachesw;
 274 do_cache:
 275                 if (!(cp = *argp++) || *cp == '-')
 276                     adios (NULL, "missing argument to %s", argp[-2]);
 277                 switch (*icachesw = smatch (cp, caches)) {
 278                 case AMBIGSW:
 279                     ambigsw (cp, caches);
 280                     done (1);
 281                 case UNKWNSW:
 282                     adios (NULL, "%s unknown", cp);
 283                 default:
 284                     break;
 285                 }
 286                 continue;
 287
 288             case CHECKSW:
 289                 checksw++;
 290                 continue;
 291             case NCHECKSW:
 292                 checksw = 0;
 293                 continue;
 294
 295             case HEADSW:
 296                 headsw = 1;
 297                 continue;
 298             case NHEADSW:
 299                 headsw = 0;
 300                 continue;
 301
 302             case LISTSW:
 303                 listsw = 1;
 304                 continue;
 305             case NLISTSW:
 306                 listsw = 0;
 307                 continue;
 308
 309             case PAUSESW:
 310                 pausesw = 1;
 311                 continue;
 312             case NPAUSESW:
 313                 pausesw = 0;
 314                 continue;
 315
 316             case SERIALSW:
 317                 serialsw = 1;
 318                 continue;
 319             case NSERIALSW:
 320                 serialsw = 0;
 321                 continue;
 322
 323             case SHOWSW:
 324                 showsw = 1;
 325                 continue;
 326             case NSHOWSW:
 327                 showsw = 0;
 328                 continue;
 329
 330             case SIZESW:
 331                 sizesw = 1;
 332                 continue;
 333             case NSIZESW:
 334                 sizesw = 0;
 335                 continue;
 336
 337             case STORESW:
 338                 storesw = 1;
 339                 continue;
 340             case NSTORESW:
 341                 storesw = 0;
 342                 continue;
 343
 344             case PARTSW:
 345                 if (!(cp = *argp++) || *cp == '-')
 346                     adios (NULL, "missing argument to %s", argp[-2]);
 347                 if (npart >= NPARTS)
 348                     adios (NULL, "too many parts (starting with %s), %d max",
 349                            cp, NPARTS);
 350                 parts[npart++] = cp;
 351                 continue;
 352
 353             case TYPESW:
 354                 if (!(cp = *argp++) || *cp == '-')
 355                     adios (NULL, "missing argument to %s", argp[-2]);
 356                 if (ntype >= NTYPES)
 357                     adios (NULL, "too many types (starting with %s), %d max",
 358                            cp, NTYPES);
 359                 types[ntype++] = cp;
 360                 continue;
 361
 362             case FILESW:
 363                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 364                     adios (NULL, "missing argument to %s", argp[-2]);
 365                 file = *cp == '-' ? cp : path (cp, TFILE);
 366                 continue;
 367
 368             case FORMSW:
 369                 if (!(cp = *argp++) || *cp == '-')
 370                     adios (NULL, "missing argument to %s", argp[-2]);
 371                 if (formsw)
 372                     free (formsw);
 373                 formsw = getcpy (etcpath (cp));
 374                 continue;
 375
 376             /*
 377              * Switches for moreproc/mhlproc
 378              */
 379             case PROGSW:
 380                 if (!(progsw = *argp++) || *progsw == '-')
 381                     adios (NULL, "missing argument to %s", argp[-2]);
 382                 continue;
 383             case NPROGSW:
 384                 nomore++;
 385                 continue;
 386
 387             case LENSW:
 388             case WIDTHSW:
 389                 if (!(cp = *argp++) || *cp == '-')
 390                     adios (NULL, "missing argument to %s", argp[-2]);
 391                 continue;
 392
 393             /*
 394              * Switches for mhbuild
 395              */
 396             case BUILDSW:
 397                 buildsw = 1;
 398                 continue;
 399             case NBUILDSW:
 400                 buildsw = 0;
 401                 continue;
 402             case RFC934SW:
 403                 rfc934sw = 1;
 404                 continue;
 405             case NRFC934SW:
 406                 rfc934sw = -1;
 407                 continue;
 408             case EBCDICSW:
 409                 ebcdicsw = 1;
 410                 continue;
 411             case NEBCDICSW:
 412                 ebcdicsw = -1;
 413                 continue;
 414
 415             case VERBSW:
 416                 verbosw = 1;
 417                 continue;
 418             case NVERBSW:
 419                 verbosw = 0;
 420                 continue;
 421             case DEBUGSW:
 422                 debugsw = 1;
 423                 continue;
 424             }
 425         }
 426         if (*cp == '+' || *cp == '@') {
 427             if (folder)
 428                 adios (NULL, "only one folder at a time!");
 429             else
 430                 folder = pluspath (cp);
 431         } else
 432                 app_msgarg(&msgs, cp);
 433     }
 434
 435     /* null terminate the list of acceptable parts/types */
 436     parts[npart] = NULL;
 437     types[ntype] = NULL;
 438
 439     set_endian ();
 440
 441     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 442         nolist  = 1;
 443         listsw  = 0;
 444         pausesw = 0;
 445     }
 446
 447     /*
 448      * Check if we've specified an additional profile
 449      */
 450     if ((cp = getenv ("MHN"))) {
 451         if ((fp = fopen (cp, "r"))) {
 452             readconfig ((struct node **) 0, fp, cp, 0);
 453             fclose (fp);
 454         } else {
 455             admonish ("", "unable to read $MHN profile (%s)", cp);
 456         }
 457     }
 458
 459     /*
 460      * Read the standard profile setup
 461      */
 462     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 463         readconfig ((struct node **) 0, fp, cp, 0);
 464         fclose (fp);
 465     }
 466
 467     /* Check for public cache location */
 468     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 469         cache_public = NULL;
 470
 471     /* Check for private cache location */
 472     if (!(cache_private = context_find (nmhprivcache)))
 473         cache_private = ".cache";
 474     cache_private = getcpy (m_maildir (cache_private));
 475
 476     /*
 477      * Cache the current directory before we do any chdirs()'s.
 478      */
 479     cwd = getcpy (pwd());
 480
 481     /*
 482      * Check for storage directory.  If specified,
 483      * then store temporary files there.  Else we
 484      * store them in standard nmh directory.
 485      */
 486     if ((cp = context_find (nmhstorage)) && *cp)
 487         tmp = concat (cp, "/", invo_name, NULL);
 488     else
 489         tmp = add (m_maildir (invo_name), NULL);
 490
 491     if (!context_find ("path"))
 492         free (path ("./", TFOLDER));
 493
 494     /*
 495      * Process a mhn composition file (mhn -build)
 496      */
 497     if (buildsw) {
 498         char *vec[MAXARGS];
 499         int vecp;
 500
 501         if (showsw || storesw || cachesw)
 502             adios (NULL, "cannot use -build with -show, -store, -cache");
 503         if (msgs.size < 1)
 504             adios (NULL, "need to specify a %s composition file", invo_name);
 505         if (msgs.size > 1)
 506             adios (NULL, "only one %s composition file at a time", invo_name);
 507
 508         vecp = 0;
 509         vec[vecp++] = "mhbuild";
 510
 511         if (ebcdicsw == 1)
 512             vec[vecp++] = "-ebcdicsafe";
 513         else if (ebcdicsw == -1)
 514             vec[vecp++] = "-noebcdicsafe";
 515
 516         if (rfc934sw == 1)
 517             vec[vecp++] = "-rfc934mode";
 518         else if (rfc934sw == -1)
 519             vec[vecp++] = "-norfc934mode";
 520
 521         vec[vecp++] = msgs.msgs[0];
 522         vec[vecp] = NULL;
 523
 524         execvp ("mhbuild", vec);
 525         fprintf (stderr, "unable to exec ");
 526         _exit (-1);
 527     }
 528
 529     /*
 530      * Process a mhn composition file (old MH style)
 531      */
 532     if (msgs.size == 1 && !folder && !npart && !cachesw
 533         && !showsw && !storesw && !ntype && !file
 534         && (cp = getenv ("mhdraft"))
 535         && strcmp (cp, msgs.msgs[0]) == 0) {
 536
 537         char *vec[MAXARGS];
 538         int vecp;
 539
 540         vecp = 0;
 541         vec[vecp++] = "mhbuild";
 542
 543         if (ebcdicsw == 1)
 544             vec[vecp++] = "-ebcdicsafe";
 545         else if (ebcdicsw == -1)
 546             vec[vecp++] = "-noebcdicsafe";
 547
 548         if (rfc934sw == 1)
 549             vec[vecp++] = "-rfc934mode";
 550         else if (rfc934sw == -1)
 551             vec[vecp++] = "-norfc934mode";
 552
 553         vec[vecp++] = cp;
 554         vec[vecp] = NULL;
 555
 556         execvp ("mhbuild", vec);
 557         fprintf (stderr, "unable to exec ");
 558         _exit (-1);
 559     }
 560
 561     if (file && msgs.size)
 562         adios (NULL, "cannot specify msg and file at same time!");
 563
 564     /*
 565      * check if message is coming from file
 566      */
 567     if (file) {
 568         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 569             adios (NULL, "out of memory");
 570         ctp = cts;
 571
 572         if ((ct = parse_mime (file)));
 573             *ctp++ = ct;
 574     } else {
 575         /*
 576          * message(s) are coming from a folder
 577          */
 578         if (!msgs.size)
 579             app_msgarg(&msgs, "cur");
 580         if (!folder)
 581             folder = getfolder (1);
 582         maildir = m_maildir (folder);
 583
 584         if (chdir (maildir) == NOTOK)
 585             adios (maildir, "unable to change directory to");
 586
 587         /* read folder and create message structure */
 588         if (!(mp = folder_read (folder)))
 589             adios (NULL, "unable to read folder %s", folder);
 590
 591         /* check for empty folder */
 592         if (mp->nummsg == 0)
 593             adios (NULL, "no messages in %s", folder);
 594
 595         /* parse all the message ranges/sequences and set SELECTED */
 596         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 597             if (!m_convert (mp, msgs.msgs[msgnum]))
 598                 done (1);
 599         seq_setprev (mp);       /* set the previous-sequence */
 600
 601         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 602             adios (NULL, "out of memory");
 603         ctp = cts;
 604
 605         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 606             if (is_selected(mp, msgnum)) {
 607                 char *msgnam;
 608
 609                 msgnam = m_name (msgnum);
 610                 if ((ct = parse_mime (msgnam)))
 611                     *ctp++ = ct;
 612             }
 613         }
 614     }
 615
 616     if (!*cts)
 617         done (1);
 618
 619     /*
 620      * You can't give more than one of these flags
 621      * at a time.
 622      */
 623     if (showsw + listsw + storesw + cachesw > 1)
 624         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 625
 626     /* If no action is specified, assume -show */
 627     if (!listsw && !showsw && !storesw && !cachesw)
 628         showsw = 1;
 629
 630     userrs = 1;
 631     SIGNAL (SIGQUIT, quitser);
 632     SIGNAL (SIGPIPE, pipeser);
 633
 634     /*
 635      * Get the associated umask for the relevant contents.
 636      */
 637     for (ctp = cts; *ctp; ctp++) {
 638         struct stat st;
 639
 640         ct = *ctp;
 641         if (type_ok (ct, 1) && !ct->c_umask) {
 642             if (stat (ct->c_file, &st) != NOTOK)
 643                 ct->c_umask = ~(st.st_mode & 0777);
 644             else
 645                 ct->c_umask = ~m_gmprot();
 646         }
 647     }
 648
 649     /*
 650      * List the message content
 651      */
 652     if (listsw)
 653         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 654
 655     /*
 656      * Store the message content
 657      */
 658     if (storesw)
 659         store_all_messages (cts);
 660
 661     /*
 662      * Cache the message content
 663      */
 664     if (cachesw)
 665         cache_all_messages (cts);
 666
 667     /*
 668      * Show the message content
 669      */
 670     if (showsw)
 671         show_all_messages (cts);
 672
 673     /* Now free all the structures for the content */
 674     for (ctp = cts; *ctp; ctp++)
 675         free_content (*ctp);
 676
 677     free ((char *) cts);
 678     cts = NULL;
 679
 680     /* If reading from a folder, do some updating */
 681     if (mp) {
 682         context_replace (pfolder, folder);/* update current folder  */
 683         seq_setcur (mp, mp->hghsel);      /* update current message */
 684         seq_save (mp);                    /* synchronize sequences  */
 685         context_save ();                  /* save the context file  */
 686     }
 687
 688     done (0);
 689     return 1;
 690 }
 691
 692
 693 static RETSIGTYPE
 694 pipeser (int i)
 695 {
 696     if (i == SIGQUIT) {
 697         unlink ("core");
 698         fflush (stdout);
 699         fprintf (stderr, "\n");
 700         fflush (stderr);
 701     }
 702
 703     done (1);
 704     /* NOTREACHED */
 705 }