diplodocus.org Git - nmh/blob - uip/mhn.c

   1 /* mhn.c -- display, list, cache, or store the contents of MIME messages
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include "h/mh.h"
   9 #include "sbr/folder_read.h"
  10 #include "sbr/context_save.h"
  11 #include "sbr/context_replace.h"
  12 #include "sbr/context_find.h"
  13 #include "sbr/readconfig.h"
  14 #include "sbr/ambigsw.h"
  15 #include "sbr/path.h"
  16 #include "sbr/print_version.h"
  17 #include "sbr/print_help.h"
  18 #include "sbr/error.h"
  19 #include <fcntl.h>
  20 #include "h/signals.h"
  21 #include "h/md5.h"
  22 #include "h/mts.h"
  23 #include "h/tws.h"
  24 #include "h/fmt_scan.h"
  25 #include "h/mime.h"
  26 #include "h/mhparse.h"
  27 #include "h/mhcachesbr.h"
  28 #include "h/done.h"
  29 #include "h/utils.h"
  30 #include "mhmisc.h"
  31 #include "sbr/m_maildir.h"
  32 #include "mhfree.h"
  33 #include "mhshowsbr.h"
  34
  35 #define MHN_SWITCHES \
  36     X("auto", 0, AUTOSW) \
  37     X("noauto", 0, NAUTOSW) \
  38     X("cache", 0, CACHESW) \
  39     X("nocache", 0, NCACHESW) \
  40     X("check", 0, CHECKSW) \
  41     X("nocheck", 0, NCHECKSW) \
  42     X("headers", 0, HEADSW) \
  43     X("noheaders", 0, NHEADSW) \
  44     X("list", 0, LISTSW) \
  45     X("nolist", 0, NLISTSW) \
  46     X("realsize", 0, SIZESW) \
  47     X("norealsize", 0, NSIZESW) \
  48     X("show", 0, SHOWSW) \
  49     X("noshow", 0, NSHOWSW) \
  50     X("store", 0, STORESW) \
  51     X("nostore", 0, NSTORESW) \
  52     X("verbose", 0, VERBSW) \
  53     X("noverbose", 0, NVERBSW) \
  54     X("file file", 0, FILESW) \
  55     X("form formfile", 0, FORMSW) \
  56     X("part number", 0, PARTSW) \
  57     X("type content", 0, TYPESW) \
  58     X("rcache policy", 0, RCACHESW) \
  59     X("wcache policy", 0, WCACHESW) \
  60     X("version", 0, VERSIONSW) \
  61     X("help", 0, HELPSW) \
  62     /*                                  \
  63      * for debugging                    \
  64      */                                 \
  65     X("debug", -5, DEBUGSW) \
  66     /*                                  \
  67      * switches for moreproc/mhlproc    \
  68      */                                 \
  69     X("moreproc program", -4, PROGSW) \
  70     X("nomoreproc", -3, NPROGSW) \
  71     X("length lines", -4, LENSW) \
  72     X("width columns", -4, WIDTHSW) \
  73     /*                                  \
  74      * switches for mhbuild             \
  75      */                                 \
  76     X("build", -5, BUILDSW) \
  77     X("nobuild", -7, NBUILDSW) \
  78     X("rfc934mode", 0, RFC934SW) \
  79     X("norfc934mode", 0, NRFC934SW) \
  80
  81 #define X(sw, minchars, id) id,
  82 DEFINE_SWITCH_ENUM(MHN);
  83 #undef X
  84
  85 #define X(sw, minchars, id) { sw, minchars, id },
  86 DEFINE_SWITCH_ARRAY(MHN, switches);
  87 #undef X
  88
  89
  90 int debugsw = 0;
  91 int verbosw = 0;
  92
  93 /*
  94  * variables for mhbuild (mhn -build)
  95  */
  96 static bool buildsw;
  97 static int rfc934sw = 0;
  98
  99 /*
 100  * what action to take?
 101  */
 102 static bool cachesw;
 103 static bool listsw;
 104 static bool showsw;
 105 static bool storesw;
 106
 107 #define quitser pipeser
 108
 109 /*
 110  * static prototypes
 111  */
 112 static void pipeser (int);
 113
 114
 115 int
 116 main (int argc, char **argv)
 117 {
 118     bool sizesw = true;
 119     bool headsw = true;
 120     bool autosw = false;
 121     int msgnum, *icachesw;
 122     char *cp, *file = NULL, *folder = NULL;
 123     char *maildir, buf[100], **argp;
 124     char **arguments;
 125     char *cwd;
 126     struct msgs_array msgs = { 0, 0, NULL };
 127     struct msgs *mp = NULL;
 128     CT ct, *ctp;
 129     FILE *fp;
 130     mhstoreinfo_t info;
 131
 132     if (nmh_init(argv[0], true, true)) { return 1; }
 133
 134     set_done(freects_done);
 135
 136     arguments = getarguments (invo_name, argc, argv, 1);
 137     argp = arguments;
 138
 139     /*
 140      * Parse arguments
 141      */
 142     while ((cp = *argp++)) {
 143         if (*cp == '-') {
 144             switch (smatch (++cp, switches)) {
 145             case AMBIGSW:
 146                 ambigsw (cp, switches);
 147                 done (1);
 148             case UNKWNSW:
 149                 die("-%s unknown", cp);
 150
 151             case HELPSW:
 152                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 153                         invo_name);
 154                 print_help (buf, switches, 1);
 155                 done (0);
 156             case VERSIONSW:
 157                 print_version(invo_name);
 158                 done (0);
 159
 160             case AUTOSW:
 161                 autosw = true;
 162                 continue;
 163             case NAUTOSW:
 164                 autosw = false;
 165                 continue;
 166
 167             case CACHESW:
 168                 cachesw = true;
 169                 continue;
 170             case NCACHESW:
 171                 cachesw = false;
 172                 continue;
 173
 174             case RCACHESW:
 175                 icachesw = &rcachesw;
 176                 goto do_cache;
 177             case WCACHESW:
 178                 icachesw = &wcachesw;
 179 do_cache:
 180                 if (!(cp = *argp++) || *cp == '-')
 181                     die("missing argument to %s", argp[-2]);
 182                 switch (*icachesw = smatch (cp, cache_policy)) {
 183                 case AMBIGSW:
 184                     ambigsw (cp, cache_policy);
 185                     done (1);
 186                 case UNKWNSW:
 187                     die("%s unknown", cp);
 188                 default:
 189                     break;
 190                 }
 191                 continue;
 192
 193             case CHECKSW:
 194                 checksw++;
 195                 continue;
 196             case NCHECKSW:
 197                 checksw = 0;
 198                 continue;
 199
 200             case HEADSW:
 201                 headsw = true;
 202                 continue;
 203             case NHEADSW:
 204                 headsw = false;
 205                 continue;
 206
 207             case LISTSW:
 208                 listsw = true;
 209                 continue;
 210             case NLISTSW:
 211                 listsw = false;
 212                 continue;
 213
 214             case SHOWSW:
 215                 showsw = true;
 216                 continue;
 217             case NSHOWSW:
 218                 showsw = false;
 219                 continue;
 220
 221             case SIZESW:
 222                 sizesw = true;
 223                 continue;
 224             case NSIZESW:
 225                 sizesw = false;
 226                 continue;
 227
 228             case STORESW:
 229                 storesw = true;
 230                 continue;
 231             case NSTORESW:
 232                 storesw = false;
 233                 continue;
 234
 235             case PARTSW:
 236                 if (!(cp = *argp++) || *cp == '-')
 237                     die("missing argument to %s", argp[-2]);
 238                 if (npart >= NPARTS)
 239                     die("too many parts (starting with %s), %d max",
 240                            cp, NPARTS);
 241                 parts[npart++] = cp;
 242                 continue;
 243
 244             case TYPESW:
 245                 if (!(cp = *argp++) || *cp == '-')
 246                     die("missing argument to %s", argp[-2]);
 247                 if (ntype >= NTYPES)
 248                     die("too many types (starting with %s), %d max",
 249                            cp, NTYPES);
 250                 types[ntype++] = cp;
 251                 continue;
 252
 253             case FILESW:
 254                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 255                     die("missing argument to %s", argp[-2]);
 256                 file = *cp == '-' ? cp : path (cp, TFILE);
 257                 continue;
 258
 259             case FORMSW:
 260                 if (!(cp = *argp++) || *cp == '-')
 261                     die("missing argument to %s", argp[-2]);
 262                 free(formsw);
 263                 formsw = mh_xstrdup(etcpath(cp));
 264                 continue;
 265
 266             /*
 267              * Switches for moreproc/mhlproc
 268              */
 269             case PROGSW:
 270                 if (!(progsw = *argp++) || *progsw == '-')
 271                     die("missing argument to %s", argp[-2]);
 272                 continue;
 273             case NPROGSW:
 274                 nomore++;
 275                 continue;
 276
 277             case LENSW:
 278             case WIDTHSW:
 279                 if (!(cp = *argp++) || *cp == '-')
 280                     die("missing argument to %s", argp[-2]);
 281                 continue;
 282
 283             /*
 284              * Switches for mhbuild
 285              */
 286             case BUILDSW:
 287                 buildsw = true;
 288                 continue;
 289             case NBUILDSW:
 290                 buildsw = false;
 291                 continue;
 292             case RFC934SW:
 293                 rfc934sw = 1;
 294                 continue;
 295             case NRFC934SW:
 296                 rfc934sw = -1;
 297                 continue;
 298
 299             case VERBSW:
 300                 verbosw = 1;
 301                 continue;
 302             case NVERBSW:
 303                 verbosw = 0;
 304                 continue;
 305             case DEBUGSW:
 306                 debugsw = 1;
 307                 continue;
 308             }
 309         }
 310         if (*cp == '+' || *cp == '@') {
 311             if (folder)
 312                 die("only one folder at a time!");
 313             folder = pluspath (cp);
 314         } else
 315                 app_msgarg(&msgs, cp);
 316     }
 317
 318     /* null terminate the list of acceptable parts/types */
 319     parts[npart] = NULL;
 320     types[ntype] = NULL;
 321
 322     /*
 323      * Check if we've specified an additional profile
 324      */
 325     if ((cp = getenv ("MHN"))) {
 326         if ((fp = fopen (cp, "r"))) {
 327             readconfig(NULL, fp, cp, 0);
 328             fclose (fp);
 329         } else {
 330             admonish ("", "unable to read $MHN profile (%s)", cp);
 331         }
 332     }
 333
 334     /*
 335      * Read the standard profile setup
 336      */
 337     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 338         readconfig(NULL, fp, cp, 0);
 339         fclose (fp);
 340     }
 341
 342     /* Check for public cache location */
 343     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 344         cache_public = NULL;
 345
 346     /* Check for private cache location */
 347     if (!(cache_private = context_find (nmhprivcache)))
 348         cache_private = ".cache";
 349     cache_private = mh_xstrdup(m_maildir(cache_private));
 350
 351     /*
 352      * Cache the current directory before we do any chdirs()'s.
 353      */
 354     cwd = mh_xstrdup(pwd());
 355
 356     if (!context_find ("path"))
 357         free (path ("./", TFOLDER));
 358
 359     /*
 360      * Process a mhn composition file (mhn -build)
 361      */
 362     if (buildsw) {
 363         char *vec[MAXARGS];
 364         int vecp;
 365
 366         if (showsw || storesw || cachesw)
 367             die("cannot use -build with -show, -store, -cache");
 368         if (msgs.size < 1)
 369             die("need to specify a %s composition file", invo_name);
 370         if (msgs.size > 1)
 371             die("only one %s composition file at a time", invo_name);
 372
 373         vecp = 0;
 374         vec[vecp++] = "mhbuild";
 375
 376         if (rfc934sw == 1)
 377             vec[vecp++] = "-rfc934mode";
 378         else if (rfc934sw == -1)
 379             vec[vecp++] = "-norfc934mode";
 380
 381         vec[vecp++] = msgs.msgs[0];
 382         vec[vecp] = NULL;
 383
 384         execvp ("mhbuild", vec);
 385         fprintf (stderr, "unable to exec ");
 386         _exit(1);
 387     }
 388
 389     /*
 390      * Process a mhn composition file (old MH style)
 391      */
 392     if (msgs.size == 1 && !folder && !npart && !cachesw
 393         && !showsw && !storesw && !ntype && !file
 394         && (cp = getenv ("mhdraft"))
 395         && strcmp (cp, msgs.msgs[0]) == 0) {
 396
 397         char *vec[MAXARGS];
 398         int vecp;
 399
 400         vecp = 0;
 401         vec[vecp++] = "mhbuild";
 402
 403         if (rfc934sw == 1)
 404             vec[vecp++] = "-rfc934mode";
 405         else if (rfc934sw == -1)
 406             vec[vecp++] = "-norfc934mode";
 407
 408         vec[vecp++] = cp;
 409         vec[vecp] = NULL;
 410
 411         execvp ("mhbuild", vec);
 412         fprintf (stderr, "unable to exec ");
 413         _exit(1);
 414     }
 415
 416     if (file && msgs.size)
 417         die("cannot specify msg and file at same time!");
 418
 419     /*
 420      * check if message is coming from file
 421      */
 422     if (file) {
 423         cts = mh_xcalloc(2, sizeof *cts);
 424         ctp = cts;
 425
 426         if ((ct = parse_mime (file)))
 427             *ctp++ = ct;
 428     } else {
 429         /*
 430          * message(s) are coming from a folder
 431          */
 432         if (!msgs.size)
 433             app_msgarg(&msgs, "cur");
 434         if (!folder)
 435             folder = getfolder (1);
 436         maildir = m_maildir (folder);
 437
 438         if (chdir (maildir) == NOTOK)
 439             adios (maildir, "unable to change directory to");
 440
 441         /* read folder and create message structure */
 442         if (!(mp = folder_read (folder, 1)))
 443             die("unable to read folder %s", folder);
 444
 445         /* check for empty folder */
 446         if (mp->nummsg == 0)
 447             die("no messages in %s", folder);
 448
 449         /* parse all the message ranges/sequences and set SELECTED */
 450         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 451             if (!m_convert (mp, msgs.msgs[msgnum]))
 452                 done (1);
 453         seq_setprev (mp);       /* set the previous-sequence */
 454
 455         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 456         ctp = cts;
 457
 458         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 459             if (is_selected(mp, msgnum)) {
 460                 char *msgnam;
 461
 462                 msgnam = m_name (msgnum);
 463                 if ((ct = parse_mime (msgnam)))
 464                     *ctp++ = ct;
 465             }
 466         }
 467     }
 468
 469     if (!*cts)
 470         done (1);
 471
 472     /*
 473      * You can't give more than one of these flags
 474      * at a time.
 475      */
 476     if (showsw + listsw + storesw + cachesw > 1)
 477         die("can only use one of -show, -list, -store, -cache at same time");
 478
 479     /* If no action is specified, assume -show */
 480     if (!listsw && !showsw && !storesw && !cachesw)
 481         showsw = true;
 482
 483     userrs = true;
 484     SIGNAL (SIGQUIT, quitser);
 485     SIGNAL (SIGPIPE, pipeser);
 486
 487     /*
 488      * Get the associated umask for the relevant contents.
 489      */
 490     for (ctp = cts; *ctp; ctp++) {
 491         struct stat st;
 492
 493         ct = *ctp;
 494         if (type_ok (ct, 1) && !ct->c_umask) {
 495             if (stat (ct->c_file, &st) != NOTOK)
 496                 ct->c_umask = ~(st.st_mode & 0777);
 497             else
 498                 ct->c_umask = ~m_gmprot();
 499         }
 500     }
 501
 502     /*
 503      * List the message content
 504      */
 505     if (listsw)
 506         list_all_messages (cts, headsw, sizesw, verbosw, debugsw, 0);
 507
 508     /*
 509      * Store the message content
 510      */
 511     if (storesw) {
 512         info = mhstoreinfo_create (cts, cwd, "always", autosw, verbosw);;
 513         store_all_messages (info);
 514         mhstoreinfo_free (info);
 515     }
 516
 517     /* If reading from a folder, do some updating */
 518     if (mp) {
 519         context_replace (pfolder, folder);/* update current folder  */
 520         seq_setcur (mp, mp->hghsel);      /* update current message */
 521         seq_save (mp);                    /* synchronize sequences  */
 522         context_save ();                  /* save the context file  */
 523     }
 524
 525     /*
 526      * Cache the message content
 527      */
 528     if (cachesw)
 529         cache_all_messages (cts);
 530
 531     /*
 532      * Show the message content
 533      */
 534     if (showsw)
 535         show_all_messages (cts, 0, 0, 0);
 536
 537     /* Now free all the structures for the content */
 538     for (ctp = cts; *ctp; ctp++)
 539         free_content (*ctp);
 540
 541     free (cts);
 542     cts = NULL;
 543
 544     done (0);
 545     return 1;
 546 }
 547
 548
 549 static void
 550 pipeser (int i)
 551 {
 552     if (i == SIGQUIT) {
 553         fflush (stdout);
 554         fprintf (stderr, "\n");
 555         fflush (stderr);
 556     }
 557
 558     done (1);
 559     /* NOTREACHED */
 560 }