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 set_endian (void);
 177 void flush_errors (void);
 178
 179 /* mhshowsbr.c */
 180 void show_all_messages (CT *);
 181
 182 /* mhlistsbr.c */
 183 void list_all_messages (CT *, int, int, int, int);
 184
 185 /* mhstoresbr.c */
 186 void store_all_messages (CT *);
 187
 188 /* mhcachesbr.c */
 189 void cache_all_messages (CT *);
 190
 191 /* mhfree.c */
 192 void free_content (CT);
 193 extern CT *cts;
 194 void freects_done (int) NORETURN;
 195
 196 /*
 197  * static prototypes
 198  */
 199 static RETSIGTYPE pipeser (int);
 200
 201
 202 int
 203 main (int argc, char **argv)
 204 {
 205     int sizesw = 1, headsw = 1;
 206     int msgnum, *icachesw;
 207     char *cp, *file = NULL, *folder = NULL;
 208     char *maildir, buf[100], **argp;
 209     char **arguments;
 210     struct msgs_array msgs = { 0, 0, NULL };
 211     struct msgs *mp = NULL;
 212     CT ct, *ctp;
 213     FILE *fp;
 214
 215     done=freects_done;
 216
 217 #ifdef LOCALE
 218     setlocale(LC_ALL, "");
 219 #endif
 220     invo_name = r1bindex (argv[0], '/');
 221
 222     /* read user profile/context */
 223     context_read();
 224
 225     arguments = getarguments (invo_name, argc, argv, 1);
 226     argp = arguments;
 227
 228     /*
 229      * Parse arguments
 230      */
 231     while ((cp = *argp++)) {
 232         if (*cp == '-') {
 233             switch (smatch (++cp, switches)) {
 234             case AMBIGSW:
 235                 ambigsw (cp, switches);
 236                 done (1);
 237             case UNKWNSW:
 238                 adios (NULL, "-%s unknown", cp);
 239
 240             case HELPSW:
 241                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 242                         invo_name);
 243                 print_help (buf, switches, 1);
 244                 done (1);
 245             case VERSIONSW:
 246                 print_version(invo_name);
 247                 done (1);
 248
 249             case AUTOSW:
 250                 autosw++;
 251                 continue;
 252             case NAUTOSW:
 253                 autosw = 0;
 254                 continue;
 255
 256             case CACHESW:
 257                 cachesw++;
 258                 continue;
 259             case NCACHESW:
 260                 cachesw = 0;
 261                 continue;
 262
 263             case RCACHESW:
 264                 icachesw = &rcachesw;
 265                 goto do_cache;
 266             case WCACHESW:
 267                 icachesw = &wcachesw;
 268 do_cache:
 269                 if (!(cp = *argp++) || *cp == '-')
 270                     adios (NULL, "missing argument to %s", argp[-2]);
 271                 switch (*icachesw = smatch (cp, caches)) {
 272                 case AMBIGSW:
 273                     ambigsw (cp, caches);
 274                     done (1);
 275                 case UNKWNSW:
 276                     adios (NULL, "%s unknown", cp);
 277                 default:
 278                     break;
 279                 }
 280                 continue;
 281
 282             case CHECKSW:
 283                 checksw++;
 284                 continue;
 285             case NCHECKSW:
 286                 checksw = 0;
 287                 continue;
 288
 289             case HEADSW:
 290                 headsw = 1;
 291                 continue;
 292             case NHEADSW:
 293                 headsw = 0;
 294                 continue;
 295
 296             case LISTSW:
 297                 listsw = 1;
 298                 continue;
 299             case NLISTSW:
 300                 listsw = 0;
 301                 continue;
 302
 303             case PAUSESW:
 304                 pausesw = 1;
 305                 continue;
 306             case NPAUSESW:
 307                 pausesw = 0;
 308                 continue;
 309
 310             case SERIALSW:
 311                 serialsw = 1;
 312                 continue;
 313             case NSERIALSW:
 314                 serialsw = 0;
 315                 continue;
 316
 317             case SHOWSW:
 318                 showsw = 1;
 319                 continue;
 320             case NSHOWSW:
 321                 showsw = 0;
 322                 continue;
 323
 324             case SIZESW:
 325                 sizesw = 1;
 326                 continue;
 327             case NSIZESW:
 328                 sizesw = 0;
 329                 continue;
 330
 331             case STORESW:
 332                 storesw = 1;
 333                 continue;
 334             case NSTORESW:
 335                 storesw = 0;
 336                 continue;
 337
 338             case PARTSW:
 339                 if (!(cp = *argp++) || *cp == '-')
 340                     adios (NULL, "missing argument to %s", argp[-2]);
 341                 if (npart >= NPARTS)
 342                     adios (NULL, "too many parts (starting with %s), %d max",
 343                            cp, NPARTS);
 344                 parts[npart++] = cp;
 345                 continue;
 346
 347             case TYPESW:
 348                 if (!(cp = *argp++) || *cp == '-')
 349                     adios (NULL, "missing argument to %s", argp[-2]);
 350                 if (ntype >= NTYPES)
 351                     adios (NULL, "too many types (starting with %s), %d max",
 352                            cp, NTYPES);
 353                 types[ntype++] = cp;
 354                 continue;
 355
 356             case FILESW:
 357                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 358                     adios (NULL, "missing argument to %s", argp[-2]);
 359                 file = *cp == '-' ? cp : path (cp, TFILE);
 360                 continue;
 361
 362             case FORMSW:
 363                 if (!(cp = *argp++) || *cp == '-')
 364                     adios (NULL, "missing argument to %s", argp[-2]);
 365                 if (formsw)
 366                     free (formsw);
 367                 formsw = getcpy (etcpath (cp));
 368                 continue;
 369
 370             /*
 371              * Switches for moreproc/mhlproc
 372              */
 373             case PROGSW:
 374                 if (!(progsw = *argp++) || *progsw == '-')
 375                     adios (NULL, "missing argument to %s", argp[-2]);
 376                 continue;
 377             case NPROGSW:
 378                 nomore++;
 379                 continue;
 380
 381             case LENSW:
 382             case WIDTHSW:
 383                 if (!(cp = *argp++) || *cp == '-')
 384                     adios (NULL, "missing argument to %s", argp[-2]);
 385                 continue;
 386
 387             /*
 388              * Switches for mhbuild
 389              */
 390             case BUILDSW:
 391                 buildsw = 1;
 392                 continue;
 393             case NBUILDSW:
 394                 buildsw = 0;
 395                 continue;
 396             case RFC934SW:
 397                 rfc934sw = 1;
 398                 continue;
 399             case NRFC934SW:
 400                 rfc934sw = -1;
 401                 continue;
 402             case EBCDICSW:
 403                 ebcdicsw = 1;
 404                 continue;
 405             case NEBCDICSW:
 406                 ebcdicsw = -1;
 407                 continue;
 408
 409             case VERBSW:
 410                 verbosw = 1;
 411                 continue;
 412             case NVERBSW:
 413                 verbosw = 0;
 414                 continue;
 415             case DEBUGSW:
 416                 debugsw = 1;
 417                 continue;
 418             }
 419         }
 420         if (*cp == '+' || *cp == '@') {
 421             if (folder)
 422                 adios (NULL, "only one folder at a time!");
 423             else
 424                 folder = pluspath (cp);
 425         } else
 426                 app_msgarg(&msgs, cp);
 427     }
 428
 429     /* null terminate the list of acceptable parts/types */
 430     parts[npart] = NULL;
 431     types[ntype] = NULL;
 432
 433     set_endian ();
 434
 435     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 436         nolist  = 1;
 437         listsw  = 0;
 438         pausesw = 0;
 439     }
 440
 441     /*
 442      * Check if we've specified an additional profile
 443      */
 444     if ((cp = getenv ("MHN"))) {
 445         if ((fp = fopen (cp, "r"))) {
 446             readconfig ((struct node **) 0, fp, cp, 0);
 447             fclose (fp);
 448         } else {
 449             admonish ("", "unable to read $MHN profile (%s)", cp);
 450         }
 451     }
 452
 453     /*
 454      * Read the standard profile setup
 455      */
 456     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 457         readconfig ((struct node **) 0, fp, cp, 0);
 458         fclose (fp);
 459     }
 460
 461     /* Check for public cache location */
 462     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 463         cache_public = NULL;
 464
 465     /* Check for private cache location */
 466     if (!(cache_private = context_find (nmhprivcache)))
 467         cache_private = ".cache";
 468     cache_private = getcpy (m_maildir (cache_private));
 469
 470     /*
 471      * Cache the current directory before we do any chdirs()'s.
 472      */
 473     cwd = getcpy (pwd());
 474
 475     /*
 476      * Check for storage directory.  If specified,
 477      * then store temporary files there.  Else we
 478      * store them in standard nmh directory.
 479      */
 480     if ((cp = context_find (nmhstorage)) && *cp)
 481         tmp = concat (cp, "/", invo_name, NULL);
 482     else
 483         tmp = add (m_maildir (invo_name), NULL);
 484
 485     if (!context_find ("path"))
 486         free (path ("./", TFOLDER));
 487
 488     /*
 489      * Process a mhn composition file (mhn -build)
 490      */
 491     if (buildsw) {
 492         char *vec[MAXARGS];
 493         int vecp;
 494
 495         if (showsw || storesw || cachesw)
 496             adios (NULL, "cannot use -build with -show, -store, -cache");
 497         if (msgs.size < 1)
 498             adios (NULL, "need to specify a %s composition file", invo_name);
 499         if (msgs.size > 1)
 500             adios (NULL, "only one %s composition file at a time", invo_name);
 501
 502         vecp = 0;
 503         vec[vecp++] = "mhbuild";
 504
 505         if (ebcdicsw == 1)
 506             vec[vecp++] = "-ebcdicsafe";
 507         else if (ebcdicsw == -1)
 508             vec[vecp++] = "-noebcdicsafe";
 509
 510         if (rfc934sw == 1)
 511             vec[vecp++] = "-rfc934mode";
 512         else if (rfc934sw == -1)
 513             vec[vecp++] = "-norfc934mode";
 514
 515         vec[vecp++] = msgs.msgs[0];
 516         vec[vecp] = NULL;
 517
 518         execvp ("mhbuild", vec);
 519         fprintf (stderr, "unable to exec ");
 520         _exit (-1);
 521     }
 522
 523     /*
 524      * Process a mhn composition file (old MH style)
 525      */
 526     if (msgs.size == 1 && !folder && !npart && !cachesw
 527         && !showsw && !storesw && !ntype && !file
 528         && (cp = getenv ("mhdraft"))
 529         && strcmp (cp, msgs.msgs[0]) == 0) {
 530
 531         char *vec[MAXARGS];
 532         int vecp;
 533
 534         vecp = 0;
 535         vec[vecp++] = "mhbuild";
 536
 537         if (ebcdicsw == 1)
 538             vec[vecp++] = "-ebcdicsafe";
 539         else if (ebcdicsw == -1)
 540             vec[vecp++] = "-noebcdicsafe";
 541
 542         if (rfc934sw == 1)
 543             vec[vecp++] = "-rfc934mode";
 544         else if (rfc934sw == -1)
 545             vec[vecp++] = "-norfc934mode";
 546
 547         vec[vecp++] = cp;
 548         vec[vecp] = NULL;
 549
 550         execvp ("mhbuild", vec);
 551         fprintf (stderr, "unable to exec ");
 552         _exit (-1);
 553     }
 554
 555     if (file && msgs.size)
 556         adios (NULL, "cannot specify msg and file at same time!");
 557
 558     /*
 559      * check if message is coming from file
 560      */
 561     if (file) {
 562         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 563             adios (NULL, "out of memory");
 564         ctp = cts;
 565
 566         if ((ct = parse_mime (file)));
 567             *ctp++ = ct;
 568     } else {
 569         /*
 570          * message(s) are coming from a folder
 571          */
 572         if (!msgs.size)
 573             app_msgarg(&msgs, "cur");
 574         if (!folder)
 575             folder = getfolder (1);
 576         maildir = m_maildir (folder);
 577
 578         if (chdir (maildir) == NOTOK)
 579             adios (maildir, "unable to change directory to");
 580
 581         /* read folder and create message structure */
 582         if (!(mp = folder_read (folder)))
 583             adios (NULL, "unable to read folder %s", folder);
 584
 585         /* check for empty folder */
 586         if (mp->nummsg == 0)
 587             adios (NULL, "no messages in %s", folder);
 588
 589         /* parse all the message ranges/sequences and set SELECTED */
 590         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 591             if (!m_convert (mp, msgs.msgs[msgnum]))
 592                 done (1);
 593         seq_setprev (mp);       /* set the previous-sequence */
 594
 595         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 596             adios (NULL, "out of memory");
 597         ctp = cts;
 598
 599         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 600             if (is_selected(mp, msgnum)) {
 601                 char *msgnam;
 602
 603                 msgnam = m_name (msgnum);
 604                 if ((ct = parse_mime (msgnam)))
 605                     *ctp++ = ct;
 606             }
 607         }
 608     }
 609
 610     if (!*cts)
 611         done (1);
 612
 613     /*
 614      * You can't give more than one of these flags
 615      * at a time.
 616      */
 617     if (showsw + listsw + storesw + cachesw > 1)
 618         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 619
 620     /* If no action is specified, assume -show */
 621     if (!listsw && !showsw && !storesw && !cachesw)
 622         showsw = 1;
 623
 624     userrs = 1;
 625     SIGNAL (SIGQUIT, quitser);
 626     SIGNAL (SIGPIPE, pipeser);
 627
 628     /*
 629      * Get the associated umask for the relevant contents.
 630      */
 631     for (ctp = cts; *ctp; ctp++) {
 632         struct stat st;
 633
 634         ct = *ctp;
 635         if (type_ok (ct, 1) && !ct->c_umask) {
 636             if (stat (ct->c_file, &st) != NOTOK)
 637                 ct->c_umask = ~(st.st_mode & 0777);
 638             else
 639                 ct->c_umask = ~m_gmprot();
 640         }
 641     }
 642
 643     /*
 644      * List the message content
 645      */
 646     if (listsw)
 647         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 648
 649     /*
 650      * Store the message content
 651      */
 652     if (storesw)
 653         store_all_messages (cts);
 654
 655     /*
 656      * Cache the message content
 657      */
 658     if (cachesw)
 659         cache_all_messages (cts);
 660
 661     /*
 662      * Show the message content
 663      */
 664     if (showsw)
 665         show_all_messages (cts);
 666
 667     /* Now free all the structures for the content */
 668     for (ctp = cts; *ctp; ctp++)
 669         free_content (*ctp);
 670
 671     free ((char *) cts);
 672     cts = NULL;
 673
 674     /* If reading from a folder, do some updating */
 675     if (mp) {
 676         context_replace (pfolder, folder);/* update current folder  */
 677         seq_setcur (mp, mp->hghsel);      /* update current message */
 678         seq_save (mp);                    /* synchronize sequences  */
 679         context_save ();                  /* save the context file  */
 680     }
 681
 682     done (0);
 683     return 1;
 684 }
 685
 686
 687 static RETSIGTYPE
 688 pipeser (int i)
 689 {
 690     if (i == SIGQUIT) {
 691         unlink ("core");
 692         fflush (stdout);
 693         fprintf (stderr, "\n");
 694         fflush (stderr);
 695     }
 696
 697     done (1);
 698     /* NOTREACHED */
 699 }