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