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