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