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
  24 #ifdef HAVE_SYS_WAIT_H
  25 # include <sys/wait.h>
  26 #endif
  27
  28 /*
  29  * We allocate space for message names (msgs array)
  30  * this number of elements at a time.
  31  */
  32 #define MAXMSGS  256
  33
  34
  35 static struct swit switches[] = {
  36 #define AUTOSW                  0
  37     { "auto", 0 },
  38 #define NAUTOSW                 1
  39     { "noauto", 0 },
  40 #define CACHESW                 2
  41     { "cache", 0 },
  42 #define NCACHESW                3
  43     { "nocache", 0 },
  44 #define CHECKSW                 4
  45     { "check", 0 },
  46 #define NCHECKSW                5
  47     { "nocheck", 0 },
  48 #define HEADSW                  6
  49     { "headers", 0 },
  50 #define NHEADSW                 7
  51     { "noheaders", 0 },
  52 #define LISTSW                  8
  53     { "list", 0 },
  54 #define NLISTSW                 9
  55     { "nolist", 0 },
  56 #define PAUSESW                10
  57     { "pause", 0 },
  58 #define NPAUSESW               11
  59     { "nopause", 0 },
  60 #define SIZESW                 12
  61     { "realsize", 0 },
  62 #define NSIZESW                13
  63     { "norealsize", 0 },
  64 #define SERIALSW               14
  65     { "serialonly", 0 },
  66 #define NSERIALSW              15
  67     { "noserialonly", 0 },
  68 #define SHOWSW                 16
  69     { "show", 0 },
  70 #define NSHOWSW                17
  71     { "noshow", 0 },
  72 #define STORESW                18
  73     { "store", 0 },
  74 #define NSTORESW               19
  75     { "nostore", 0 },
  76 #define VERBSW                 20
  77     { "verbose", 0 },
  78 #define NVERBSW                21
  79     { "noverbose", 0 },
  80 #define FILESW                 22       /* interface from show */
  81     { "file file", 0 },
  82 #define FORMSW                 23
  83     { "form formfile", 0 },
  84 #define PARTSW                 24
  85     { "part number", 0 },
  86 #define TYPESW                 25
  87     { "type content", 0 },
  88 #define RCACHESW               26
  89     { "rcache policy", 0 },
  90 #define WCACHESW               27
  91     { "wcache policy", 0 },
  92 #define VERSIONSW              28
  93     { "version", 0 },
  94 #define HELPSW                 29
  95     { "help", 0 },
  96
  97 /*
  98  * switches for debugging
  99  */
 100 #define DEBUGSW                30
 101     { "debug", -5 },
 102
 103 /*
 104  * switches for moreproc/mhlproc
 105  */
 106 #define PROGSW                 31
 107     { "moreproc program", -4 },
 108 #define NPROGSW                32
 109     { "nomoreproc", -3 },
 110 #define LENSW                  33
 111     { "length lines", -4 },
 112 #define WIDTHSW                34
 113     { "width columns", -4 },
 114
 115 /*
 116  * switches for mhbuild
 117  */
 118 #define BUILDSW                35
 119     { "build", -5 },
 120 #define NBUILDSW               36
 121     { "nobuild", -7 },
 122 #define EBCDICSW               37
 123     { "ebcdicsafe", -10 },
 124 #define NEBCDICSW              38
 125     { "noebcdicsafe", -12 },
 126 #define RFC934SW               39
 127     { "rfc934mode", -10 },
 128 #define NRFC934SW              40
 129     { "norfc934mode", -12 },
 130     { NULL, 0 }
 131 };
 132
 133
 134 /* mhparse.c */
 135 extern int checksw;
 136 extern char *tmp;       /* directory to place temp files */
 137
 138 /* mhcachesbr.c */
 139 extern int rcachesw;
 140 extern int wcachesw;
 141 extern char *cache_public;
 142 extern char *cache_private;
 143
 144 /* mhshowsbr.c */
 145 extern int pausesw;
 146 extern int serialsw;
 147 extern char *progsw;
 148 extern int nolist;
 149 extern int nomore;      /* flags for moreproc/header display */
 150 extern char *formsw;
 151
 152 /* mhstoresbr.c */
 153 extern int autosw;
 154 extern char *cwd;       /* cache current working directory */
 155
 156 /* mhmisc.c */
 157 extern int npart;
 158 extern int ntype;
 159 extern char *parts[NPARTS + 1];
 160 extern char *types[NTYPES + 1];
 161 extern int userrs;
 162
 163 int debugsw = 0;
 164 int verbosw = 0;
 165
 166 /* The list of top-level contents to display */
 167 CT *cts = NULL;
 168
 169 /*
 170  * variables for mhbuild (mhn -build)
 171  */
 172 static int buildsw  = 0;
 173 static int ebcdicsw = 0;
 174 static int rfc934sw = 0;
 175
 176 /*
 177  * what action to take?
 178  */
 179 static int cachesw = 0;
 180 static int listsw  = 0;
 181 static int showsw  = 0;
 182 static int storesw = 0;
 183
 184 #define quitser pipeser
 185
 186 /* mhparse.c */
 187 CT parse_mime (char *);
 188
 189 /* mhmisc.c */
 190 int part_ok (CT, int);
 191 int type_ok (CT, int);
 192 void set_endian (void);
 193 void flush_errors (void);
 194
 195 /* mhshowsbr.c */
 196 void show_all_messages (CT *);
 197
 198 /* mhlistsbr.c */
 199 void list_all_messages (CT *, int, int, int, int);
 200
 201 /* mhstoresbr.c */
 202 void store_all_messages (CT *);
 203
 204 /* mhcachesbr.c */
 205 void cache_all_messages (CT *);
 206
 207 /* mhfree.c */
 208 void free_content (CT);
 209
 210 /*
 211  * static prototypes
 212  */
 213 static RETSIGTYPE pipeser (int);
 214
 215
 216 int
 217 main (int argc, char **argv)
 218 {
 219     int sizesw = 1, headsw = 1;
 220     int nummsgs, maxmsgs, msgnum, *icachesw;
 221     char *cp, *file = NULL, *folder = NULL;
 222     char *maildir, buf[100], **argp;
 223     char **arguments, **msgs;
 224     struct msgs *mp = NULL;
 225     CT ct, *ctp;
 226     FILE *fp;
 227
 228 #ifdef LOCALE
 229     setlocale(LC_ALL, "");
 230 #endif
 231     invo_name = r1bindex (argv[0], '/');
 232
 233     /* read user profile/context */
 234     context_read();
 235
 236     arguments = getarguments (invo_name, argc, argv, 1);
 237     argp = arguments;
 238
 239     /*
 240      * Allocate the initial space to record message
 241      * names, ranges, and sequences.
 242      */
 243     nummsgs = 0;
 244     maxmsgs = MAXMSGS;
 245     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 246         adios (NULL, "unable to allocate storage");
 247
 248     /*
 249      * Parse arguments
 250      */
 251     while ((cp = *argp++)) {
 252         if (*cp == '-') {
 253             switch (smatch (++cp, switches)) {
 254             case AMBIGSW:
 255                 ambigsw (cp, switches);
 256                 done (1);
 257             case UNKWNSW:
 258                 adios (NULL, "-%s unknown", cp);
 259
 260             case HELPSW:
 261                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 262                         invo_name);
 263                 print_help (buf, switches, 1);
 264                 done (1);
 265             case VERSIONSW:
 266                 print_version(invo_name);
 267                 done (1);
 268
 269             case AUTOSW:
 270                 autosw++;
 271                 continue;
 272             case NAUTOSW:
 273                 autosw = 0;
 274                 continue;
 275
 276             case CACHESW:
 277                 cachesw++;
 278                 continue;
 279             case NCACHESW:
 280                 cachesw = 0;
 281                 continue;
 282
 283             case RCACHESW:
 284                 icachesw = &rcachesw;
 285                 goto do_cache;
 286             case WCACHESW:
 287                 icachesw = &wcachesw;
 288 do_cache:
 289                 if (!(cp = *argp++) || *cp == '-')
 290                     adios (NULL, "missing argument to %s", argp[-2]);
 291                 switch (*icachesw = smatch (cp, caches)) {
 292                 case AMBIGSW:
 293                     ambigsw (cp, caches);
 294                     done (1);
 295                 case UNKWNSW:
 296                     adios (NULL, "%s unknown", cp);
 297                 default:
 298                     break;
 299                 }
 300                 continue;
 301
 302             case CHECKSW:
 303                 checksw++;
 304                 continue;
 305             case NCHECKSW:
 306                 checksw = 0;
 307                 continue;
 308
 309             case HEADSW:
 310                 headsw = 1;
 311                 continue;
 312             case NHEADSW:
 313                 headsw = 0;
 314                 continue;
 315
 316             case LISTSW:
 317                 listsw = 1;
 318                 continue;
 319             case NLISTSW:
 320                 listsw = 0;
 321                 continue;
 322
 323             case PAUSESW:
 324                 pausesw = 1;
 325                 continue;
 326             case NPAUSESW:
 327                 pausesw = 0;
 328                 continue;
 329
 330             case SERIALSW:
 331                 serialsw = 1;
 332                 continue;
 333             case NSERIALSW:
 334                 serialsw = 0;
 335                 continue;
 336
 337             case SHOWSW:
 338                 showsw = 1;
 339                 continue;
 340             case NSHOWSW:
 341                 showsw = 0;
 342                 continue;
 343
 344             case SIZESW:
 345                 sizesw = 1;
 346                 continue;
 347             case NSIZESW:
 348                 sizesw = 0;
 349                 continue;
 350
 351             case STORESW:
 352                 storesw = 1;
 353                 continue;
 354             case NSTORESW:
 355                 storesw = 0;
 356                 continue;
 357
 358             case PARTSW:
 359                 if (!(cp = *argp++) || *cp == '-')
 360                     adios (NULL, "missing argument to %s", argp[-2]);
 361                 if (npart >= NPARTS)
 362                     adios (NULL, "too many parts (starting with %s), %d max",
 363                            cp, NPARTS);
 364                 parts[npart++] = cp;
 365                 continue;
 366
 367             case TYPESW:
 368                 if (!(cp = *argp++) || *cp == '-')
 369                     adios (NULL, "missing argument to %s", argp[-2]);
 370                 if (ntype >= NTYPES)
 371                     adios (NULL, "too many types (starting with %s), %d max",
 372                            cp, NTYPES);
 373                 types[ntype++] = cp;
 374                 continue;
 375
 376             case FILESW:
 377                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 378                     adios (NULL, "missing argument to %s", argp[-2]);
 379                 file = *cp == '-' ? cp : path (cp, TFILE);
 380                 continue;
 381
 382             case FORMSW:
 383                 if (!(cp = *argp++) || *cp == '-')
 384                     adios (NULL, "missing argument to %s", argp[-2]);
 385                 if (formsw)
 386                     free (formsw);
 387                 formsw = getcpy (etcpath (cp));
 388                 continue;
 389
 390             /*
 391              * Switches for moreproc/mhlproc
 392              */
 393             case PROGSW:
 394                 if (!(progsw = *argp++) || *progsw == '-')
 395                     adios (NULL, "missing argument to %s", argp[-2]);
 396                 continue;
 397             case NPROGSW:
 398                 nomore++;
 399                 continue;
 400
 401             case LENSW:
 402             case WIDTHSW:
 403                 if (!(cp = *argp++) || *cp == '-')
 404                     adios (NULL, "missing argument to %s", argp[-2]);
 405                 continue;
 406
 407             /*
 408              * Switches for mhbuild
 409              */
 410             case BUILDSW:
 411                 buildsw = 1;
 412                 continue;
 413             case NBUILDSW:
 414                 buildsw = 0;
 415                 continue;
 416             case RFC934SW:
 417                 rfc934sw = 1;
 418                 continue;
 419             case NRFC934SW:
 420                 rfc934sw = -1;
 421                 continue;
 422             case EBCDICSW:
 423                 ebcdicsw = 1;
 424                 continue;
 425             case NEBCDICSW:
 426                 ebcdicsw = -1;
 427                 continue;
 428
 429             case VERBSW:
 430                 verbosw = 1;
 431                 continue;
 432             case NVERBSW:
 433                 verbosw = 0;
 434                 continue;
 435             case DEBUGSW:
 436                 debugsw = 1;
 437                 continue;
 438             }
 439         }
 440         if (*cp == '+' || *cp == '@') {
 441             if (folder)
 442                 adios (NULL, "only one folder at a time!");
 443             else
 444                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 445         } else {
 446             /*
 447              * Check if we need to allocate more space
 448              * for message names/ranges/sequences.
 449              */
 450             if (nummsgs >= maxmsgs) {
 451                 maxmsgs += MAXMSGS;
 452                 if (!(msgs = (char **) realloc (msgs,
 453                         (size_t) (maxmsgs * sizeof(*msgs)))))
 454                     adios (NULL, "unable to reallocate msgs storage");
 455             }
 456             msgs[nummsgs++] = cp;
 457         }
 458     }
 459
 460     /* null terminate the list of acceptable parts/types */
 461     parts[npart] = NULL;
 462     types[ntype] = NULL;
 463
 464     set_endian ();
 465
 466     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 467         nolist  = 1;
 468         listsw  = 0;
 469         pausesw = 0;
 470     }
 471
 472     /*
 473      * Check if we've specified an additional profile
 474      */
 475     if ((cp = getenv ("MHN"))) {
 476         if ((fp = fopen (cp, "r"))) {
 477             readconfig ((struct node **) 0, fp, cp, 0);
 478             fclose (fp);
 479         } else {
 480             admonish ("", "unable to read $MHN profile (%s)", cp);
 481         }
 482     }
 483
 484     /*
 485      * Read the standard profile setup
 486      */
 487     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 488         readconfig ((struct node **) 0, fp, cp, 0);
 489         fclose (fp);
 490     }
 491
 492     /* Check for public cache location */
 493     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 494         cache_public = NULL;
 495
 496     /* Check for private cache location */
 497     if (!(cache_private = context_find (nmhprivcache)))
 498         cache_private = ".cache";
 499     cache_private = getcpy (m_maildir (cache_private));
 500
 501     /*
 502      * Cache the current directory before we do any chdirs()'s.
 503      */
 504     cwd = getcpy (pwd());
 505
 506     /*
 507      * Check for storage directory.  If specified,
 508      * then store temporary files there.  Else we
 509      * store them in standard nmh directory.
 510      */
 511     if ((cp = context_find (nmhstorage)) && *cp)
 512         tmp = concat (cp, "/", invo_name, NULL);
 513     else
 514         tmp = add (m_maildir (invo_name), NULL);
 515
 516     if (!context_find ("path"))
 517         free (path ("./", TFOLDER));
 518
 519     /*
 520      * Process a mhn composition file (mhn -build)
 521      */
 522     if (buildsw) {
 523         char *vec[MAXARGS];
 524         int vecp;
 525
 526         if (showsw || storesw || cachesw)
 527             adios (NULL, "cannot use -build with -show, -store, -cache");
 528         if (nummsgs < 1)
 529             adios (NULL, "need to specify a %s composition file", invo_name);
 530         if (nummsgs > 1)
 531             adios (NULL, "only one %s composition file at a time", invo_name);
 532
 533         vecp = 0;
 534         vec[vecp++] = "mhbuild";
 535
 536         if (ebcdicsw == 1)
 537             vec[vecp++] = "-ebcdicsafe";
 538         else if (ebcdicsw == -1)
 539             vec[vecp++] = "-noebcdicsafe";
 540
 541         if (rfc934sw == 1)
 542             vec[vecp++] = "-rfc934mode";
 543         else if (rfc934sw == -1)
 544             vec[vecp++] = "-norfc934mode";
 545
 546         vec[vecp++] = msgs[0];
 547         vec[vecp] = NULL;
 548
 549         execvp ("mhbuild", vec);
 550         fprintf (stderr, "unable to exec ");
 551         _exit (-1);
 552     }
 553
 554     /*
 555      * Process a mhn composition file (old MH style)
 556      */
 557     if (nummsgs == 1 && !folder && !npart && !cachesw
 558         && !showsw && !storesw && !ntype && !file
 559         && (cp = getenv ("mhdraft"))
 560         && strcmp (cp, msgs[0]) == 0) {
 561
 562         char *vec[MAXARGS];
 563         int vecp;
 564
 565         vecp = 0;
 566         vec[vecp++] = "mhbuild";
 567
 568         if (ebcdicsw == 1)
 569             vec[vecp++] = "-ebcdicsafe";
 570         else if (ebcdicsw == -1)
 571             vec[vecp++] = "-noebcdicsafe";
 572
 573         if (rfc934sw == 1)
 574             vec[vecp++] = "-rfc934mode";
 575         else if (rfc934sw == -1)
 576             vec[vecp++] = "-norfc934mode";
 577
 578         vec[vecp++] = cp;
 579         vec[vecp] = NULL;
 580
 581         execvp ("mhbuild", vec);
 582         fprintf (stderr, "unable to exec ");
 583         _exit (-1);
 584     }
 585
 586     if (file && nummsgs)
 587         adios (NULL, "cannot specify msg and file at same time!");
 588
 589     /*
 590      * check if message is coming from file
 591      */
 592     if (file) {
 593         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 594             adios (NULL, "out of memory");
 595         ctp = cts;
 596
 597         if ((ct = parse_mime (file)));
 598             *ctp++ = ct;
 599     } else {
 600         /*
 601          * message(s) are coming from a folder
 602          */
 603         if (!nummsgs)
 604             msgs[nummsgs++] = "cur";
 605         if (!folder)
 606             folder = getfolder (1);
 607         maildir = m_maildir (folder);
 608
 609         if (chdir (maildir) == NOTOK)
 610             adios (maildir, "unable to change directory to");
 611
 612         /* read folder and create message structure */
 613         if (!(mp = folder_read (folder)))
 614             adios (NULL, "unable to read folder %s", folder);
 615
 616         /* check for empty folder */
 617         if (mp->nummsg == 0)
 618             adios (NULL, "no messages in %s", folder);
 619
 620         /* parse all the message ranges/sequences and set SELECTED */
 621         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 622             if (!m_convert (mp, msgs[msgnum]))
 623                 done (1);
 624         seq_setprev (mp);       /* set the previous-sequence */
 625
 626         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 627             adios (NULL, "out of memory");
 628         ctp = cts;
 629
 630         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 631             if (is_selected(mp, msgnum)) {
 632                 char *msgnam;
 633
 634                 msgnam = m_name (msgnum);
 635                 if ((ct = parse_mime (msgnam)))
 636                     *ctp++ = ct;
 637             }
 638         }
 639     }
 640
 641     if (!*cts)
 642         done (1);
 643
 644     /*
 645      * You can't give more than one of these flags
 646      * at a time.
 647      */
 648     if (showsw + listsw + storesw + cachesw > 1)
 649         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 650
 651     /* If no action is specified, assume -show */
 652     if (!listsw && !showsw && !storesw && !cachesw)
 653         showsw = 1;
 654
 655     userrs = 1;
 656     SIGNAL (SIGQUIT, quitser);
 657     SIGNAL (SIGPIPE, pipeser);
 658
 659     /*
 660      * Get the associated umask for the relevant contents.
 661      */
 662     for (ctp = cts; *ctp; ctp++) {
 663         struct stat st;
 664
 665         ct = *ctp;
 666         if (type_ok (ct, 1) && !ct->c_umask) {
 667             if (stat (ct->c_file, &st) != NOTOK)
 668                 ct->c_umask = ~(st.st_mode & 0777);
 669             else
 670                 ct->c_umask = ~m_gmprot();
 671         }
 672     }
 673
 674     /*
 675      * List the message content
 676      */
 677     if (listsw)
 678         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 679
 680     /*
 681      * Store the message content
 682      */
 683     if (storesw)
 684         store_all_messages (cts);
 685
 686     /*
 687      * Cache the message content
 688      */
 689     if (cachesw)
 690         cache_all_messages (cts);
 691
 692     /*
 693      * Show the message content
 694      */
 695     if (showsw)
 696         show_all_messages (cts);
 697
 698     /* Now free all the structures for the content */
 699     for (ctp = cts; *ctp; ctp++)
 700         free_content (*ctp);
 701
 702     free ((char *) cts);
 703     cts = NULL;
 704
 705     /* If reading from a folder, do some updating */
 706     if (mp) {
 707         context_replace (pfolder, folder);/* update current folder  */
 708         seq_setcur (mp, mp->hghsel);      /* update current message */
 709         seq_save (mp);                    /* synchronize sequences  */
 710         context_save ();                  /* save the context file  */
 711     }
 712
 713     return done (0);
 714 }
 715
 716
 717 static RETSIGTYPE
 718 pipeser (int i)
 719 {
 720     if (i == SIGQUIT) {
 721         unlink ("core");
 722         fflush (stdout);
 723         fprintf (stderr, "\n");
 724         fflush (stderr);
 725     }
 726
 727     done (1);
 728     /* NOTREACHED */
 729 }
 730
 731
 732 int
 733 done (int status)
 734 {
 735     CT *ctp;
 736
 737     if ((ctp = cts))
 738         for (; *ctp; ctp++)
 739             free_content (*ctp);
 740
 741     exit (status);
 742     return 1;  /* dead code to satisfy the compiler */
 743 }