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