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
  24 #ifdef HAVE_SYS_WAIT_H
  25 # include <sys/wait.h>
  26 #endif
  27
  28 /*
  29  * We allocate space for message names (msgs array)
  30  * this number of elements at a time.
  31  */
  32 #define MAXMSGS  256
  33
  34
  35 static struct swit switches[] = {
  36 #define AUTOSW                  0
  37     { "auto", 0 },
  38 #define NAUTOSW                 1
  39     { "noauto", 0 },
  40 #define CACHESW                 2
  41     { "cache", 0 },
  42 #define NCACHESW                3
  43     { "nocache", 0 },
  44 #define CHECKSW                 4
  45     { "check", 0 },
  46 #define NCHECKSW                5
  47     { "nocheck", 0 },
  48 #define HEADSW                  6
  49     { "headers", 0 },
  50 #define NHEADSW                 7
  51     { "noheaders", 0 },
  52 #define LISTSW                  8
  53     { "list", 0 },
  54 #define NLISTSW                 9
  55     { "nolist", 0 },
  56 #define PAUSESW                10
  57     { "pause", 0 },
  58 #define NPAUSESW               11
  59     { "nopause", 0 },
  60 #define SIZESW                 12
  61     { "realsize", 0 },
  62 #define NSIZESW                13
  63     { "norealsize", 0 },
  64 #define SERIALSW               14
  65     { "serialonly", 0 },
  66 #define NSERIALSW              15
  67     { "noserialonly", 0 },
  68 #define SHOWSW                 16
  69     { "show", 0 },
  70 #define NSHOWSW                17
  71     { "noshow", 0 },
  72 #define STORESW                18
  73     { "store", 0 },
  74 #define NSTORESW               19
  75     { "nostore", 0 },
  76 #define VERBSW                 20
  77     { "verbose", 0 },
  78 #define NVERBSW                21
  79     { "noverbose", 0 },
  80 #define FILESW                 22       /* interface from show */
  81     { "file file", 0 },
  82 #define FORMSW                 23
  83     { "form formfile", 0 },
  84 #define PARTSW                 24
  85     { "part number", 0 },
  86 #define TYPESW                 25
  87     { "type content", 0 },
  88 #define RCACHESW               26
  89     { "rcache policy", 0 },
  90 #define WCACHESW               27
  91     { "wcache policy", 0 },
  92 #define VERSIONSW              28
  93     { "version", 0 },
  94 #define HELPSW                 29
  95     { "help", 0 },
  96
  97 /*
  98  * switches for debugging
  99  */
 100 #define DEBUGSW                30
 101     { "debug", -5 },
 102
 103 /*
 104  * switches for moreproc/mhlproc
 105  */
 106 #define PROGSW                 31
 107     { "moreproc program", -4 },
 108 #define NPROGSW                32
 109     { "nomoreproc", -3 },
 110 #define LENSW                  33
 111     { "length lines", -4 },
 112 #define WIDTHSW                34
 113     { "width columns", -4 },
 114
 115 /*
 116  * switches for mhbuild
 117  */
 118 #define BUILDSW                35
 119     { "build", -5 },
 120 #define NBUILDSW               36
 121     { "nobuild", -7 },
 122 #define EBCDICSW               37
 123     { "ebcdicsafe", -10 },
 124 #define NEBCDICSW              38
 125     { "noebcdicsafe", -12 },
 126 #define RFC934SW               39
 127     { "rfc934mode", -10 },
 128 #define NRFC934SW              40
 129     { "norfc934mode", -12 },
 130     { NULL, 0 }
 131 };
 132
 133
 134 extern int errno;
 135
 136 /* mhparse.c */
 137 extern int checksw;
 138 extern char *tmp;       /* directory to place temp files */
 139
 140 /* mhcachesbr.c */
 141 extern int rcachesw;
 142 extern int wcachesw;
 143 extern char *cache_public;
 144 extern char *cache_private;
 145
 146 /* mhshowsbr.c */
 147 extern int pausesw;
 148 extern int serialsw;
 149 extern char *progsw;
 150 extern int nolist;
 151 extern int nomore;      /* flags for moreproc/header display */
 152 extern char *formsw;
 153
 154 /* mhstoresbr.c */
 155 extern int autosw;
 156 extern char *cwd;       /* cache current working directory */
 157
 158 /* mhmisc.c */
 159 extern int npart;
 160 extern int ntype;
 161 extern char *parts[NPARTS + 1];
 162 extern char *types[NTYPES + 1];
 163 extern int userrs;
 164
 165 int debugsw = 0;
 166 int verbosw = 0;
 167
 168 /* The list of top-level contents to display */
 169 CT *cts = NULL;
 170
 171 /*
 172  * variables for mhbuild (mhn -build)
 173  */
 174 static int buildsw  = 0;
 175 static int ebcdicsw = 0;
 176 static int rfc934sw = 0;
 177
 178 /*
 179  * what action to take?
 180  */
 181 static int cachesw = 0;
 182 static int listsw  = 0;
 183 static int showsw  = 0;
 184 static int storesw = 0;
 185
 186 #define quitser pipeser
 187
 188 /* mhparse.c */
 189 CT parse_mime (char *);
 190
 191 /* mhmisc.c */
 192 int part_ok (CT, int);
 193 int type_ok (CT, int);
 194 void set_endian (void);
 195 void flush_errors (void);
 196
 197 /* mhshowsbr.c */
 198 void show_all_messages (CT *);
 199
 200 /* mhlistsbr.c */
 201 void list_all_messages (CT *, int, int, int, int);
 202
 203 /* mhstoresbr.c */
 204 void store_all_messages (CT *);
 205
 206 /* mhcachesbr.c */
 207 void cache_all_messages (CT *);
 208
 209 /* mhfree.c */
 210 void free_content (CT);
 211
 212 /*
 213  * static prototypes
 214  */
 215 static RETSIGTYPE pipeser (int);
 216
 217
 218 int
 219 main (int argc, char **argv)
 220 {
 221     int sizesw = 1, headsw = 1;
 222     int nummsgs, maxmsgs, msgnum, *icachesw;
 223     char *cp, *file = NULL, *folder = NULL;
 224     char *maildir, buf[100], **argp;
 225     char **arguments, **msgs;
 226     struct msgs *mp = NULL;
 227     CT ct, *ctp;
 228     FILE *fp;
 229
 230 #ifdef LOCALE
 231     setlocale(LC_ALL, "");
 232 #endif
 233     invo_name = r1bindex (argv[0], '/');
 234
 235     /* read user profile/context */
 236     context_read();
 237
 238     arguments = getarguments (invo_name, argc, argv, 1);
 239     argp = arguments;
 240
 241     /*
 242      * Allocate the initial space to record message
 243      * names, ranges, and sequences.
 244      */
 245     nummsgs = 0;
 246     maxmsgs = MAXMSGS;
 247     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 248         adios (NULL, "unable to allocate storage");
 249
 250     /*
 251      * Parse arguments
 252      */
 253     while ((cp = *argp++)) {
 254         if (*cp == '-') {
 255             switch (smatch (++cp, switches)) {
 256             case AMBIGSW:
 257                 ambigsw (cp, switches);
 258                 done (1);
 259             case UNKWNSW:
 260                 adios (NULL, "-%s unknown", cp);
 261
 262             case HELPSW:
 263                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 264                         invo_name);
 265                 print_help (buf, switches, 1);
 266                 done (1);
 267             case VERSIONSW:
 268                 print_version(invo_name);
 269                 done (1);
 270
 271             case AUTOSW:
 272                 autosw++;
 273                 continue;
 274             case NAUTOSW:
 275                 autosw = 0;
 276                 continue;
 277
 278             case CACHESW:
 279                 cachesw++;
 280                 continue;
 281             case NCACHESW:
 282                 cachesw = 0;
 283                 continue;
 284
 285             case RCACHESW:
 286                 icachesw = &rcachesw;
 287                 goto do_cache;
 288             case WCACHESW:
 289                 icachesw = &wcachesw;
 290 do_cache:
 291                 if (!(cp = *argp++) || *cp == '-')
 292                     adios (NULL, "missing argument to %s", argp[-2]);
 293                 switch (*icachesw = smatch (cp, caches)) {
 294                 case AMBIGSW:
 295                     ambigsw (cp, caches);
 296                     done (1);
 297                 case UNKWNSW:
 298                     adios (NULL, "%s unknown", cp);
 299                 default:
 300                     break;
 301                 }
 302                 continue;
 303
 304             case CHECKSW:
 305                 checksw++;
 306                 continue;
 307             case NCHECKSW:
 308                 checksw = 0;
 309                 continue;
 310
 311             case HEADSW:
 312                 headsw = 1;
 313                 continue;
 314             case NHEADSW:
 315                 headsw = 0;
 316                 continue;
 317
 318             case LISTSW:
 319                 listsw = 1;
 320                 continue;
 321             case NLISTSW:
 322                 listsw = 0;
 323                 continue;
 324
 325             case PAUSESW:
 326                 pausesw = 1;
 327                 continue;
 328             case NPAUSESW:
 329                 pausesw = 0;
 330                 continue;
 331
 332             case SERIALSW:
 333                 serialsw = 1;
 334                 continue;
 335             case NSERIALSW:
 336                 serialsw = 0;
 337                 continue;
 338
 339             case SHOWSW:
 340                 showsw = 1;
 341                 continue;
 342             case NSHOWSW:
 343                 showsw = 0;
 344                 continue;
 345
 346             case SIZESW:
 347                 sizesw = 1;
 348                 continue;
 349             case NSIZESW:
 350                 sizesw = 0;
 351                 continue;
 352
 353             case STORESW:
 354                 storesw = 1;
 355                 continue;
 356             case NSTORESW:
 357                 storesw = 0;
 358                 continue;
 359
 360             case PARTSW:
 361                 if (!(cp = *argp++) || *cp == '-')
 362                     adios (NULL, "missing argument to %s", argp[-2]);
 363                 if (npart >= NPARTS)
 364                     adios (NULL, "too many parts (starting with %s), %d max",
 365                            cp, NPARTS);
 366                 parts[npart++] = cp;
 367                 continue;
 368
 369             case TYPESW:
 370                 if (!(cp = *argp++) || *cp == '-')
 371                     adios (NULL, "missing argument to %s", argp[-2]);
 372                 if (ntype >= NTYPES)
 373                     adios (NULL, "too many types (starting with %s), %d max",
 374                            cp, NTYPES);
 375                 types[ntype++] = cp;
 376                 continue;
 377
 378             case FILESW:
 379                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 380                     adios (NULL, "missing argument to %s", argp[-2]);
 381                 file = *cp == '-' ? cp : path (cp, TFILE);
 382                 continue;
 383
 384             case FORMSW:
 385                 if (!(cp = *argp++) || *cp == '-')
 386                     adios (NULL, "missing argument to %s", argp[-2]);
 387                 if (formsw)
 388                     free (formsw);
 389                 formsw = getcpy (etcpath (cp));
 390                 continue;
 391
 392             /*
 393              * Switches for moreproc/mhlproc
 394              */
 395             case PROGSW:
 396                 if (!(progsw = *argp++) || *progsw == '-')
 397                     adios (NULL, "missing argument to %s", argp[-2]);
 398                 continue;
 399             case NPROGSW:
 400                 nomore++;
 401                 continue;
 402
 403             case LENSW:
 404             case WIDTHSW:
 405                 if (!(cp = *argp++) || *cp == '-')
 406                     adios (NULL, "missing argument to %s", argp[-2]);
 407                 continue;
 408
 409             /*
 410              * Switches for mhbuild
 411              */
 412             case BUILDSW:
 413                 buildsw = 1;
 414                 continue;
 415             case NBUILDSW:
 416                 buildsw = 0;
 417                 continue;
 418             case RFC934SW:
 419                 rfc934sw = 1;
 420                 continue;
 421             case NRFC934SW:
 422                 rfc934sw = -1;
 423                 continue;
 424             case EBCDICSW:
 425                 ebcdicsw = 1;
 426                 continue;
 427             case NEBCDICSW:
 428                 ebcdicsw = -1;
 429                 continue;
 430
 431             case VERBSW:
 432                 verbosw = 1;
 433                 continue;
 434             case NVERBSW:
 435                 verbosw = 0;
 436                 continue;
 437             case DEBUGSW:
 438                 debugsw = 1;
 439                 continue;
 440             }
 441         }
 442         if (*cp == '+' || *cp == '@') {
 443             if (folder)
 444                 adios (NULL, "only one folder at a time!");
 445             else
 446                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 447         } else {
 448             /*
 449              * Check if we need to allocate more space
 450              * for message names/ranges/sequences.
 451              */
 452             if (nummsgs >= maxmsgs) {
 453                 maxmsgs += MAXMSGS;
 454                 if (!(msgs = (char **) realloc (msgs,
 455                         (size_t) (maxmsgs * sizeof(*msgs)))))
 456                     adios (NULL, "unable to reallocate msgs storage");
 457             }
 458             msgs[nummsgs++] = cp;
 459         }
 460     }
 461
 462     /* null terminate the list of acceptable parts/types */
 463     parts[npart] = NULL;
 464     types[ntype] = NULL;
 465
 466     set_endian ();
 467
 468     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 469         nolist  = 1;
 470         listsw  = 0;
 471         pausesw = 0;
 472     }
 473
 474     /*
 475      * Check if we've specified an additional profile
 476      */
 477     if ((cp = getenv ("MHN"))) {
 478         if ((fp = fopen (cp, "r"))) {
 479             readconfig ((struct node **) 0, fp, cp, 0);
 480             fclose (fp);
 481         } else {
 482             admonish ("", "unable to read $MHN profile (%s)", cp);
 483         }
 484     }
 485
 486     /*
 487      * Read the standard profile setup
 488      */
 489     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 490         readconfig ((struct node **) 0, fp, cp, 0);
 491         fclose (fp);
 492     }
 493
 494     /* Check for public cache location */
 495     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 496         cache_public = NULL;
 497
 498     /* Check for private cache location */
 499     if (!(cache_private = context_find (nmhprivcache)))
 500         cache_private = ".cache";
 501     cache_private = getcpy (m_maildir (cache_private));
 502
 503     /*
 504      * Cache the current directory before we do any chdirs()'s.
 505      */
 506     cwd = getcpy (pwd());
 507
 508     /*
 509      * Check for storage directory.  If specified,
 510      * then store temporary files there.  Else we
 511      * store them in standard nmh directory.
 512      */
 513     if ((cp = context_find (nmhstorage)) && *cp)
 514         tmp = concat (cp, "/", invo_name, NULL);
 515     else
 516         tmp = add (m_maildir (invo_name), NULL);
 517
 518     if (!context_find ("path"))
 519         free (path ("./", TFOLDER));
 520
 521     /*
 522      * Process a mhn composition file (mhn -build)
 523      */
 524     if (buildsw) {
 525         char *vec[MAXARGS];
 526         int vecp;
 527
 528         if (showsw || storesw || cachesw)
 529             adios (NULL, "cannot use -build with -show, -store, -cache");
 530         if (nummsgs < 1)
 531             adios (NULL, "need to specify a %s composition file", invo_name);
 532         if (nummsgs > 1)
 533             adios (NULL, "only one %s composition file at a time", invo_name);
 534
 535         vecp = 0;
 536         vec[vecp++] = "mhbuild";
 537
 538         if (ebcdicsw == 1)
 539             vec[vecp++] = "-ebcdicsafe";
 540         else if (ebcdicsw == -1)
 541             vec[vecp++] = "-noebcdicsafe";
 542
 543         if (rfc934sw == 1)
 544             vec[vecp++] = "-rfc934mode";
 545         else if (rfc934sw == -1)
 546             vec[vecp++] = "-norfc934mode";
 547
 548         vec[vecp++] = msgs[0];
 549         vec[vecp] = NULL;
 550
 551         execvp ("mhbuild", vec);
 552         fprintf (stderr, "unable to exec ");
 553         _exit (-1);
 554     }
 555
 556     /*
 557      * Process a mhn composition file (old MH style)
 558      */
 559     if (nummsgs == 1 && !folder && !npart && !cachesw
 560         && !showsw && !storesw && !ntype && !file
 561         && (cp = getenv ("mhdraft"))
 562         && strcmp (cp, msgs[0]) == 0) {
 563
 564         char *vec[MAXARGS];
 565         int vecp;
 566
 567         vecp = 0;
 568         vec[vecp++] = "mhbuild";
 569
 570         if (ebcdicsw == 1)
 571             vec[vecp++] = "-ebcdicsafe";
 572         else if (ebcdicsw == -1)
 573             vec[vecp++] = "-noebcdicsafe";
 574
 575         if (rfc934sw == 1)
 576             vec[vecp++] = "-rfc934mode";
 577         else if (rfc934sw == -1)
 578             vec[vecp++] = "-norfc934mode";
 579
 580         vec[vecp++] = cp;
 581         vec[vecp] = NULL;
 582
 583         execvp ("mhbuild", vec);
 584         fprintf (stderr, "unable to exec ");
 585         _exit (-1);
 586     }
 587
 588     if (file && nummsgs)
 589         adios (NULL, "cannot specify msg and file at same time!");
 590
 591     /*
 592      * check if message is coming from file
 593      */
 594     if (file) {
 595         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 596             adios (NULL, "out of memory");
 597         ctp = cts;
 598
 599         if ((ct = parse_mime (file)));
 600             *ctp++ = ct;
 601     } else {
 602         /*
 603          * message(s) are coming from a folder
 604          */
 605         if (!nummsgs)
 606             msgs[nummsgs++] = "cur";
 607         if (!folder)
 608             folder = getfolder (1);
 609         maildir = m_maildir (folder);
 610
 611         if (chdir (maildir) == NOTOK)
 612             adios (maildir, "unable to change directory to");
 613
 614         /* read folder and create message structure */
 615         if (!(mp = folder_read (folder)))
 616             adios (NULL, "unable to read folder %s", folder);
 617
 618         /* check for empty folder */
 619         if (mp->nummsg == 0)
 620             adios (NULL, "no messages in %s", folder);
 621
 622         /* parse all the message ranges/sequences and set SELECTED */
 623         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 624             if (!m_convert (mp, msgs[msgnum]))
 625                 done (1);
 626         seq_setprev (mp);       /* set the previous-sequence */
 627
 628         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 629             adios (NULL, "out of memory");
 630         ctp = cts;
 631
 632         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 633             if (is_selected(mp, msgnum)) {
 634                 char *msgnam;
 635
 636                 msgnam = m_name (msgnum);
 637                 if ((ct = parse_mime (msgnam)))
 638                     *ctp++ = ct;
 639             }
 640         }
 641     }
 642
 643     if (!*cts)
 644         done (1);
 645
 646     /*
 647      * You can't give more than one of these flags
 648      * at a time.
 649      */
 650     if (showsw + listsw + storesw + cachesw > 1)
 651         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 652
 653     /* If no action is specified, assume -show */
 654     if (!listsw && !showsw && !storesw && !cachesw)
 655         showsw = 1;
 656
 657     userrs = 1;
 658     SIGNAL (SIGQUIT, quitser);
 659     SIGNAL (SIGPIPE, pipeser);
 660
 661     /*
 662      * Get the associated umask for the relevant contents.
 663      */
 664     for (ctp = cts; *ctp; ctp++) {
 665         struct stat st;
 666
 667         ct = *ctp;
 668         if (type_ok (ct, 1) && !ct->c_umask) {
 669             if (stat (ct->c_file, &st) != NOTOK)
 670                 ct->c_umask = ~(st.st_mode & 0777);
 671             else
 672                 ct->c_umask = ~m_gmprot();
 673         }
 674     }
 675
 676     /*
 677      * List the message content
 678      */
 679     if (listsw)
 680         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 681
 682     /*
 683      * Store the message content
 684      */
 685     if (storesw)
 686         store_all_messages (cts);
 687
 688     /*
 689      * Cache the message content
 690      */
 691     if (cachesw)
 692         cache_all_messages (cts);
 693
 694     /*
 695      * Show the message content
 696      */
 697     if (showsw)
 698         show_all_messages (cts);
 699
 700     /* Now free all the structures for the content */
 701     for (ctp = cts; *ctp; ctp++)
 702         free_content (*ctp);
 703
 704     free ((char *) cts);
 705     cts = NULL;
 706
 707     /* If reading from a folder, do some updating */
 708     if (mp) {
 709         context_replace (pfolder, folder);/* update current folder  */
 710         seq_setcur (mp, mp->hghsel);      /* update current message */
 711         seq_save (mp);                    /* synchronize sequences  */
 712         context_save ();                  /* save the context file  */
 713     }
 714
 715     return done (0);
 716 }
 717
 718
 719 static RETSIGTYPE
 720 pipeser (int i)
 721 {
 722     if (i == SIGQUIT) {
 723         unlink ("core");
 724         fflush (stdout);
 725         fprintf (stderr, "\n");
 726         fflush (stderr);
 727     }
 728
 729     done (1);
 730     /* NOTREACHED */
 731 }
 732
 733
 734 int
 735 done (int status)
 736 {
 737     CT *ctp;
 738
 739     if ((ctp = cts))
 740         for (; *ctp; ctp++)
 741             free_content (*ctp);
 742
 743     exit (status);
 744     return 1;  /* dead code to satisfy the compiler */
 745 }