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