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