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