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