main.c

   1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
   2  *@ Startup and initialization.
   3  *@ This file is also used to materialize externals.
   4  *
   5  * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
   6  * Copyright (c) 2012 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   7  */
   8 /*
   9  * Copyright (c) 1980, 1993
  10  *      The Regents of the University of California.  All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36 #undef n_FILE
  37 #define n_FILE main
  38 #define n_MAIN_SOURCE
  39
  40 #include "nail.h"
  41
  42 #include <sys/ioctl.h>
  43
  44 #include <pwd.h>
  45
  46 #ifdef HAVE_NL_LANGINFO
  47 # include <langinfo.h>
  48 #endif
  49 #ifdef HAVE_SETLOCALE
  50 # include <locale.h>
  51 #endif
  52
  53 struct a_arg {
  54    struct a_arg   *aa_next;
  55    char           *aa_file;
  56 };
  57
  58 /* (extern, but not with amalgamation, so define here) */
  59 VL char const        weekday_names[7 + 1][4] = {
  60    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", ""
  61 };
  62 VL char const        month_names[12 + 1][4] = {
  63    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  64    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", ""
  65 };
  66 VL char const        uagent[sizeof UAGENT] = UAGENT;
  67 VL uc_i const        class_char[1 + 0x7F] = {
  68 /* 000 nul  001 soh  002 stx  003 etx  004 eot  005 enq  006 ack  007 bel */
  69    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  70 /* 010 bs   011 ht   012 nl   013 vt   014 np   015 cr   016 so   017 si */
  71    C_CNTRL, C_BLANK, C_WHITE, C_SPACE, C_SPACE, C_SPACE, C_CNTRL, C_CNTRL,
  72 /* 020 dle  021 dc1  022 dc2  023 dc3  024 dc4  025 nak  026 syn  027 etb */
  73    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  74 /* 030 can  031 em   032 sub  033 esc  034 fs   035 gs   036 rs   037 us */
  75    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  76 /* 040 sp   041  !   042  "   043  #   044  $   045  %   046  &   047  ' */
  77    C_BLANK, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  78 /* 050  (   051  )   052  *   053  +   054  ,    055  -   056  .   057  / */
  79    C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  80 /* 060  0   061  1   062  2   063  3   064  4   065  5   066  6   067  7 */
  81    C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL,
  82 /* 070  8   071  9   072  :   073  ;   074  <   075  =   076  >   077  ? */
  83    C_DIGIT, C_DIGIT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  84 /* 100  @   101  A   102  B   103  C   104  D   105  E   106  F   107  G */
  85    C_PUNCT, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  86 /* 110  H   111  I   112  J   113  K   114  L   115  M   116  N   117  O */
  87    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  88 /* 120  P   121  Q   122  R   123  S   124  T   125  U   126  V   127  W */
  89    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  90 /* 130  X   131  Y   132  Z   133  [   134  \   135  ]   136  ^   137  _ */
  91    C_UPPER, C_UPPER, C_UPPER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  92 /* 140  `   141  a   142  b   143  c   144  d   145  e   146  f   147  g */
  93    C_PUNCT, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
  94 /* 150  h   151  i   152  j   153  k   154  l   155  m   156  n   157  o */
  95    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
  96 /* 160  p   161  q   162  r   163  s   164  t   165  u   166  v   167  w */
  97    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
  98 /* 170  x   171  y   172  z   173  {   174  |   175  }   176  ~   177 del */
  99    C_LOWER, C_LOWER, C_LOWER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_CNTRL
 100 };
 101
 102 /* Our own little getopt(3) */
 103 static char          *_oarg;
 104 static int           _oind, /*_oerr,*/ _oopt;
 105
 106 /* Our own little getopt(3); note --help is special-treated as 'h' */
 107 static int     _getopt(int argc, char * const argv[], char const *optstring);
 108
 109 /* Perform basic startup initialization */
 110 static void    _startup(void);
 111
 112 /* Grow a char** */
 113 static size_t  _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt);
 114
 115 /* Setup some variables which we require to be valid / verified */
 116 static void    _setup_vars(void);
 117
 118 /* We're in an interactive session - compute what the screen size for printing
 119  * headers etc. should be; notify tty upon resize if *is_sighdl* is not 0.
 120  * We use the following algorithm for the height:
 121  * If baud rate < 1200, use  9
 122  * If baud rate = 1200, use 14
 123  * If baud rate > 1200, use 24 or ws_row
 124  * Width is either 80 or ws_col */
 125 static void    _setscreensize(int is_sighdl);
 126
 127 /* Ok, we are reading mail.  Decide whether we are editing a mailbox or reading
 128  * the system mailbox, and open up the right stuff */
 129 static int     _rcv_mode(char const *folder, char const *Larg);
 130
 131 /* Interrupt printing of the headers */
 132 static void    _hdrstop(int signo);
 133
 134 static int
 135 _getopt(int argc, char * const argv[], char const *optstring)
 136 {
 137    static char const *lastp;
 138
 139    int rv = -1/*, colon*/;
 140    char const *curp;
 141    NYD_ENTER;
 142
 143    _oarg = NULL;
 144
 145    /*if ((colon = (optstring[0] == ':')))
 146       ++optstring;*/
 147
 148    if (lastp != NULL) {
 149       curp = lastp;
 150       lastp = NULL;
 151    } else {
 152       if (_oind >= argc || argv[_oind] == NULL || argv[_oind][0] != '-' ||
 153             argv[_oind][1] == '\0')
 154          goto jleave;
 155       if (argv[_oind][1] == '-' && argv[_oind][2] == '\0') {
 156          /* We need this in for MTA arg detection (easier) ++_oind;*/
 157          goto jleave;
 158       }
 159       curp = &argv[_oind][1];
 160    }
 161
 162    for(_oopt = curp[0]; optstring[0] != '\0';){
 163       if(optstring[0] != _oopt){
 164          optstring += 1 + (optstring[1] == ':');
 165          continue;
 166       }
 167
 168       if (optstring[1] == ':') {
 169          if (curp[1] != '\0') {
 170             _oarg = UNCONST(curp + 1);
 171             ++_oind;
 172          } else {
 173             if ((_oind += 2) > argc) {
 174                /*if (!colon *//*&& _oerr*//*)*/ {
 175                   n_err(_("%s: option requires an argument -- %c\n"),
 176                      argv[0], (char)_oopt);
 177                }
 178                rv = (/*colon ? ':' :*/ '?');
 179                goto jleave;
 180             }
 181             _oarg = argv[_oind - 1];
 182          }
 183       } else {
 184          if (curp[1] != '\0')
 185             lastp = curp + 1;
 186          else
 187             ++_oind;
 188       }
 189       rv = _oopt;
 190       goto jleave;
 191    }
 192
 193    /* Special support for --help, which is quite common */
 194    if (_oopt == '-' && !strcmp(curp, "-help") && curp - 1 == argv[_oind]) {
 195       ++_oind;
 196       rv = 'h';
 197       goto jleave;
 198    }
 199
 200    /* Definitive error */
 201    /*if (!colon *//*&& opterr*//*)*/
 202       n_err(_("%s: invalid option -- %c\n"), argv[0], _oopt);
 203    if (curp[1] != '\0')
 204       lastp = curp + 1;
 205    else
 206       ++_oind;
 207    _oarg = NULL;
 208    rv = '?';
 209 jleave:
 210    NYD_LEAVE;
 211    return rv;
 212 }
 213
 214 static void
 215 _startup(void)
 216 {
 217    char *cp;
 218    NYD_ENTER;
 219
 220    image = -1;
 221    dflpipe = SIG_DFL;
 222    _oind = /*_oerr =*/ 1;
 223
 224    if ((cp = strrchr(progname, '/')) != NULL)
 225       progname = ++cp;
 226
 227    /* Set up a reasonable environment */
 228
 229 #ifdef HAVE_NYD
 230    safe_signal(SIGABRT, &_nyd_oncrash);
 231 # ifdef SIGBUS
 232    safe_signal(SIGBUS, &_nyd_oncrash);
 233 # endif
 234    safe_signal(SIGFPE, &_nyd_oncrash);
 235    safe_signal(SIGILL, &_nyd_oncrash);
 236    safe_signal(SIGSEGV, &_nyd_oncrash);
 237 #endif
 238    command_manager_start();
 239
 240    if (isatty(STDIN_FILENO)) /* TODO should be isatty(0) && isatty(2)?? */
 241       options |= OPT_TTYIN;
 242    if (isatty(STDOUT_FILENO))
 243       options |= OPT_TTYOUT;
 244    if ((options & (OPT_TTYIN | OPT_TTYOUT)) == (OPT_TTYIN | OPT_TTYOUT)) {
 245       options |= OPT_INTERACTIVE;
 246       safe_signal(SIGPIPE, dflpipe = SIG_IGN);
 247    }
 248
 249    /*  --  >8  --  8<  --  */
 250
 251 #ifdef HAVE_SETLOCALE
 252    setlocale(LC_ALL, "");
 253    mb_cur_max = MB_CUR_MAX;
 254 # ifdef HAVE_NL_LANGINFO
 255    if (ok_vlook(ttycharset) == NULL && (cp = nl_langinfo(CODESET)) != NULL)
 256       ok_vset(ttycharset, cp);
 257 # endif
 258
 259 # ifdef HAVE_C90AMEND1
 260    if (mb_cur_max > 1) {
 261       wchar_t  wc;
 262       if (mbtowc(&wc, "\303\266", 2) == 2 && wc == 0xF6 &&
 263             mbtowc(&wc, "\342\202\254", 3) == 3 && wc == 0x20AC)
 264          options |= OPT_UNICODE;
 265       /* Reset possibly messed up state; luckily this also gives us an
 266        * indication wether the encoding has locking shift state sequences */
 267       /* TODO temporary - use option bits! */
 268       if (mbtowc(&wc, NULL, mb_cur_max))
 269          options |= OPT_ENC_MBSTATE;
 270    }
 271 # endif
 272 #else
 273    mb_cur_max = 1;
 274 #endif
 275
 276 #ifdef HAVE_ICONV
 277    iconvd = (iconv_t)-1;
 278 #endif
 279    NYD_LEAVE;
 280 }
 281
 282 static size_t
 283 _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt)
 284 {
 285    /* Before spreserve(): use our string pool instead of LibC heap */
 286    char const **newcpp;
 287    NYD_ENTER;
 288
 289    newcpp = salloc(sizeof(char*) * newsize);
 290
 291    if (oldcnt > 0)
 292       memcpy(newcpp, *cpp, oldcnt * sizeof(char*));
 293    *cpp = newcpp;
 294    NYD_LEAVE;
 295    return newsize;
 296 }
 297
 298 static void
 299 _setup_vars(void){
 300    /* XXX furtherly check paths? */
 301    struct passwd *pwuid;
 302    char const *cp;
 303    NYD_ENTER;
 304
 305    group_id = getgid();
 306    if((pwuid = getpwuid(user_id = getuid())) == NULL)
 307       n_panic(_("Cannot associate a name with uid %lu"), (ul_i)user_id);
 308    myname = savestr(pwuid->pw_name); /* XXX replace uses with vlook(LOGNAME)! */
 309
 310    /* C99 */{
 311       char const *ep;
 312       bool_t doenv;
 313
 314       if(!(doenv = (ep = ok_vlook(LOGNAME)) == NULL) &&
 315             (doenv = strcmp(myname, ep)))
 316          n_err(_("Warning: $LOGNAME=\"%s\" not identical to user (\"%s\")!\n"),
 317             ep, myname);
 318       if(doenv){
 319          pstate |= PS_ROOT;
 320          ok_vset(LOGNAME, myname);
 321          pstate &= ~PS_ROOT;
 322       }
 323
 324       if((ep = ok_vlook(USER)) != NULL && strcmp(myname, ep)){
 325          n_err(_("Warning: $USER=\"%s\" not identical to user (\"%s\")!\n"),
 326             ep, myname);
 327          pstate |= PS_ROOT;
 328          ok_vset(USER, myname);
 329          pstate &= ~PS_ROOT;
 330       }
 331    }
 332
 333    /* XXX myfullname = pw->pw_gecos[OPTIONAL!] -> GUT THAT; TODO pw_shell */
 334
 335    /* */
 336    if((cp = ok_vlook(HOME)) == NULL){
 337       cp = pwuid->pw_dir;
 338       pstate |= PS_ROOT;
 339       ok_vset(HOME, cp);
 340       pstate &= ~PS_ROOT;
 341    }
 342
 343    (void)ok_vlook(TMPDIR);
 344    NYD_LEAVE;
 345 }
 346
 347 static void
 348 _setscreensize(int is_sighdl) /* TODO global policy; int wraps; minvals! */
 349 {
 350    struct termios tbuf;
 351 #ifdef TIOCGWINSZ
 352    struct winsize ws;
 353 #elif defined TIOCGSIZE
 354    struct ttysize ts;
 355 #endif
 356    NYD_ENTER;
 357
 358    scrnheight = realscreenheight = scrnwidth = 0;
 359
 360    /* (Also) POSIX: LINES and COLUMNS always override.  Adjust this
 361     * a little bit to be able to honour resizes during our lifetime and
 362     * only honour it upon first run; abuse *is_sighdl* as an indicator */
 363    if (!is_sighdl) {
 364       char *cp;
 365
 366       /* We manage those variables for our child processes, so ensure they
 367        * are up to date, always */
 368       if (options & OPT_INTERACTIVE)
 369          pstate |= PS_SIGWINCH_PEND;
 370
 371       if ((cp = ok_vlook(LINES)) != NULL)
 372          scrnheight = realscreenheight = (int)strtoul(cp, NULL, 0); /* TODO */
 373       if ((cp = ok_vlook(COLUMNS)) != NULL)
 374          scrnwidth = (int)strtoul(cp, NULL, 0); /* TODO posui32= not posnum=! */
 375
 376       if (scrnwidth != 0 && scrnheight != 0)
 377          goto jleave;
 378    }
 379
 380 #ifdef TIOCGWINSZ
 381    if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1)
 382       ws.ws_col = ws.ws_row = 0;
 383 #elif defined TIOCGSIZE
 384    if (ioctl(STDOUT_FILENO, TIOCGSIZE, &ws) == -1)
 385       ts.ts_lines = ts.ts_cols = 0;
 386 #endif
 387
 388    if (scrnheight == 0) {
 389       speed_t ospeed = ((tcgetattr(STDOUT_FILENO, &tbuf) == -1)
 390             ? B9600 : cfgetospeed(&tbuf));
 391
 392       if (ospeed < B1200)
 393          scrnheight = 9;
 394       else if (ospeed == B1200)
 395          scrnheight = 14;
 396 #ifdef TIOCGWINSZ
 397       else if (ws.ws_row != 0)
 398          scrnheight = ws.ws_row;
 399 #elif defined TIOCGSIZE
 400       else if (ts.ts_lines != 0)
 401          scrnheight = ts.ts_lines;
 402 #endif
 403       else
 404          scrnheight = 24;
 405
 406 #if defined TIOCGWINSZ || defined TIOCGSIZE
 407       if (0 ==
 408 # ifdef TIOCGWINSZ
 409             (realscreenheight = ws.ws_row)
 410 # else
 411             (realscreenheight = ts.ts_lines)
 412 # endif
 413       )
 414          realscreenheight = 24;
 415 #endif
 416    }
 417
 418    if (scrnwidth == 0 && 0 ==
 419 #ifdef TIOCGWINSZ
 420          (scrnwidth = ws.ws_col)
 421 #elif defined TIOCGSIZE
 422          (scrnwidth = ts.ts_cols)
 423 #endif
 424    )
 425       scrnwidth = 80;
 426
 427 jleave:
 428 #ifdef SIGWINCH
 429    if (is_sighdl) {
 430       pstate |= PS_SIGWINCH_PEND; /* XXX Not atomic */
 431       if (options & OPT_INTERACTIVE)
 432          n_tty_signal(SIGWINCH);
 433    }
 434 #endif
 435    NYD_LEAVE;
 436 }
 437
 438 static sigjmp_buf __hdrjmp; /* XXX */
 439
 440 static int
 441 _rcv_mode(char const *folder, char const *Larg)
 442 {
 443    int i;
 444    sighandler_type prevint;
 445    NYD_ENTER;
 446
 447    if (folder == NULL)
 448       folder = "%";
 449
 450    if (options & OPT_QUICKRUN_MASK)
 451       i = FEDIT_RDONLY;
 452    else
 453       i = FEDIT_NONE;
 454    i = setfile(folder, i);
 455    if (i < 0) {
 456       exit_status = EXIT_ERR; /* error already reported */
 457       goto jquit;
 458    }
 459    if (options & OPT_QUICKRUN_MASK) {
 460       exit_status = i;
 461       if (i == EXIT_OK && (!(options & OPT_EXISTONLY) ||
 462             (options & OPT_HEADERLIST)))
 463          print_header_summary(Larg);
 464       goto jquit;
 465    }
 466    check_folder_hook(FAL0);
 467
 468    if (i > 0 && !ok_blook(emptystart)) {
 469       exit_status = EXIT_ERR;
 470       goto jleave;
 471    }
 472
 473    if (sigsetjmp(__hdrjmp, 1) == 0) {
 474       if ((prevint = safe_signal(SIGINT, SIG_IGN)) != SIG_IGN)
 475          safe_signal(SIGINT, _hdrstop);
 476       if (!(options & OPT_N_FLAG)) {
 477          if (!ok_blook(quiet))
 478             printf(_("%s version %s.  Type ? for help.\n"),
 479                (ok_blook(bsdcompat) ? "Mail" : uagent), ok_vlook(version));
 480          announce(1);
 481          fflush(stdout);
 482       }
 483       safe_signal(SIGINT, prevint);
 484    }
 485
 486    /* Enter the command loop */
 487    if (options & OPT_INTERACTIVE)
 488       n_tty_init();
 489    n_commands();
 490    if (options & OPT_INTERACTIVE)
 491       n_tty_destroy();
 492
 493    if (mb.mb_type == MB_FILE || mb.mb_type == MB_MAILDIR) {
 494       safe_signal(SIGHUP, SIG_IGN);
 495       safe_signal(SIGINT, SIG_IGN);
 496       safe_signal(SIGQUIT, SIG_IGN);
 497    }
 498 jquit:
 499    save_mbox_for_possible_quitstuff();
 500    quit();
 501 jleave:
 502    NYD_LEAVE;
 503    return exit_status;
 504 }
 505
 506 static void
 507 _hdrstop(int signo)
 508 {
 509    NYD_X; /* Signal handler */
 510    UNUSED(signo);
 511
 512    fflush(stdout);
 513    n_err_sighdl(_("\nInterrupt\n"));
 514    siglongjmp(__hdrjmp, 1);
 515 }
 516
 517 int
 518 main(int argc, char *argv[]){
 519    static char const optstr[] = "A:a:Bb:c:dEeFfHhiL:NnO:q:Rr:S:s:tu:VvX:::~#.",
 520       usagestr[] = N_(
 521          "Synopsis:\n"
 522          "  %s -h | --help\n"
 523          "  %s [-BdEFintv~] [-: spec] [-A account]\n"
 524          "\t [-a attachment] [-b bcc-address] [-c cc-address]\n"
 525          "\t [-q file] [-r from-address] [-S var[=value]..]\n"
 526          "\t [-s subject] [-X cmd] [-.] to-address.. [-- mta-option..]\n"
 527          "  %s [-BdEeHiNnRv~] [-: spec] [-A account]\n"
 528          "\t [-L spec-list] [-r from-address] [-S var[=value]..]\n"
 529          "\t [-u user] [-X cmd] [-- mta-option..]\n"
 530          "  %s [-BdEeHiNnRv~#] [-: spec] [-A account] -f\n"
 531          "\t [-L spec-list] [-r from-address] [-S var[=value]..]\n"
 532          "\t [-X cmd] [file] [-- mta-option..]\n"
 533       );
 534 #define _USAGE_ARGS , progname, progname, progname, progname
 535
 536    struct a_arg *a_head, *a_curr;
 537    struct name *to, *cc, *bcc;
 538    struct attachment *attach;
 539    char *cp, *subject, *qf, *Aarg, *Larg;
 540    char const *okey, **oargs, **Xargs, *folder, *emsg;
 541    size_t oargs_size, oargs_cnt, Xargs_size, Xargs_cnt, smopts_size;
 542    enum{
 543       a_RF_NONE = 0,
 544       a_RF_SET = 1<<0,
 545       a_RF_SYSTEM = 1<<1,
 546       a_RF_USER = 1<<2,
 547       a_RF_ALL = a_RF_SYSTEM | a_RF_USER
 548    } resfiles;
 549    int i;
 550    NYD_ENTER;
 551
 552    a_head = NULL;
 553    UNINIT(a_curr, NULL);
 554    to = cc = bcc = NULL;
 555    attach = NULL;
 556    cp = subject = qf =
 557          Aarg = Larg = NULL;
 558    oargs = Xargs = NULL;
 559    folder = emsg = NULL;
 560    oargs_size = oargs_cnt = Xargs_size = Xargs_cnt = smopts_size = 0;
 561    resfiles = a_RF_ALL;
 562
 563    /*
 564     * Start our lengthy setup, finalize by setting PS_STARTED
 565     */
 566
 567    progname = argv[0];
 568    _startup();
 569
 570    /* Command line parsing
 571     * Variable settings need to be done twice, since the user surely wants the
 572     * setting to take effect immediately, but also doesn't want it to be
 573     * overwritten from within resource files */
 574    while ((i = _getopt(argc, argv, optstr)) >= 0) {
 575       switch (i) {
 576       case 'A':
 577          /* Execute an account command later on */
 578          Aarg = _oarg;
 579          break;
 580       case 'a':
 581          options |= OPT_SENDMODE;
 582          {  struct a_arg *nap = salloc(sizeof(struct a_arg));
 583             if (a_head == NULL)
 584                a_head = nap;
 585             else
 586                a_curr->aa_next = nap;
 587             nap->aa_next = NULL;
 588             nap->aa_file = _oarg;
 589             a_curr = nap;
 590          }
 591          break;
 592       case 'B':
 593          /* Make 0/1 line buffered */
 594          setvbuf(stdin, NULL, _IOLBF, 0);
 595          setvbuf(stdout, NULL, _IOLBF, 0);
 596          break;
 597       case 'b':
 598          /* Get Blind Carbon Copy Recipient list */
 599          options |= OPT_SENDMODE;
 600          bcc = cat(bcc, lextract(_oarg, GBCC | GFULL));
 601          break;
 602       case 'c':
 603          /* Get Carbon Copy Recipient list */
 604          options |= OPT_SENDMODE;
 605          cc = cat(cc, lextract(_oarg, GCC | GFULL));
 606          break;
 607       case 'd':
 608          ok_bset(debug, TRU1);
 609          okey = "debug";
 610          goto joarg;
 611       case 'E':
 612          ok_bset(skipemptybody, TRU1);
 613          okey = "skipemptybody";
 614          goto joarg;
 615       case 'e':
 616          options |= OPT_EXISTONLY;
 617          break;
 618       case 'F':
 619          options |= OPT_F_FLAG | OPT_SENDMODE;
 620          break;
 621       case 'f':
 622          /* User is specifying file to "edit" with Mail, as opposed to reading
 623           * system mailbox.  If no argument is given, we read his mbox file.
 624           * Check for remaining arguments later */
 625          folder = "&";
 626          break;
 627       case 'H':
 628          options |= OPT_HEADERSONLY;
 629          break;
 630       case 'h':
 631          n_err(V_(usagestr) _USAGE_ARGS);
 632          goto j_leave;
 633       case 'i':
 634          /* Ignore interrupts */
 635          ok_bset(ignore, TRU1);
 636          okey = "ignore";
 637          goto joarg;
 638       case 'L':
 639          Larg = _oarg;
 640          options |= OPT_HEADERLIST;
 641          if (*Larg == '"' || *Larg == '\'') { /* TODO list.c:listspec_check() */
 642             size_t j = strlen(++Larg);
 643             if (j > 0)
 644                Larg[j - 1] = '\0';
 645          }
 646          break;
 647       case 'N':
 648          /* Avoid initial header printing */
 649          ok_bset(header, FAL0);
 650          okey = "noheader";
 651          goto joarg;
 652       case 'n':
 653          /* Don't source "unspecified system start-up file" */
 654          if(resfiles & a_RF_SET){
 655             emsg = N_("-n cannot be used in conjunction with -:");
 656             goto jusage;
 657          }
 658          resfiles = a_RF_USER;
 659          break;
 660       case 'O':
 661          /* Additional options to pass-through to MTA TODO v15-compat legacy */
 662          if (smopts_cnt == smopts_size)
 663             smopts_size = _grow_cpp(&smopts, smopts_size + 8, smopts_cnt);
 664          smopts[smopts_cnt++] = _oarg;
 665          break;
 666       case 'q':
 667          /* Quote file TODO drop? -Q with real quote?? what ? */
 668          options |= OPT_SENDMODE;
 669          /* Allow for now, we have to special check validity of -q- later on! */
 670          qf = (_oarg[0] == '-' && _oarg[1] == '\0') ? (char*)-1 : _oarg;
 671          break;
 672       case 'R':
 673          /* Open folders read-only */
 674          options |= OPT_R_FLAG;
 675          break;
 676       case 'r':
 677          /* Set From address. */
 678          options |= OPT_r_FLAG;
 679          if (_oarg[0] != '\0') {
 680             struct name *fa = nalloc(_oarg, GSKIN | GFULL | GFULLEXTRA);
 681
 682             if (is_addr_invalid(fa, EACM_STRICT | EACM_NOLOG)) {
 683                emsg = N_("Invalid address argument with -r");
 684                goto jusage;
 685             }
 686             option_r_arg = fa;
 687             /* TODO -r options is set in smopts, but may
 688              * TODO be overwritten by setting from= in
 689              * TODO an interactive session!
 690              * TODO Maybe disable setting of from?
 691              * TODO Warn user?  Update manual!! */
 692             okey = savecat("from=", fa->n_fullname);
 693             goto joarg;
 694          }
 695          break;
 696       case 'S':
 697          /* Set variable (twice) */
 698          {  char *a[2];
 699             okey = a[0] = _oarg;
 700             a[1] = NULL;
 701             c_set(a);
 702          }
 703 joarg:
 704          if (oargs_cnt == oargs_size)
 705             oargs_size = _grow_cpp(&oargs, oargs_size + 8, oargs_cnt);
 706          oargs[oargs_cnt++] = okey;
 707          break;
 708       case 's':
 709          /* Subject: */
 710          subject = _oarg;
 711          options |= OPT_SENDMODE;
 712          break;
 713       case 't':
 714          /* Read defined set of headers from mail to be sent */
 715          options |= OPT_SENDMODE | OPT_t_FLAG;
 716          break;
 717       case 'u':
 718          /* Temporarily set myname so that we can recognize the -u condition */
 719          myname = savecat("%", _oarg);
 720          break;
 721       case 'V':
 722          puts(ok_vlook(version));
 723          exit(EXIT_OK);
 724          /* NOTREACHED */
 725       case 'v':
 726          /* Be verbose */
 727          ok_bset(verbose, TRU1);
 728          okey = "verbose";
 729          goto joarg;
 730       case 'X':
 731          /* Add to list of commands to exec before entering normal operation */
 732          if (Xargs_cnt == Xargs_size)
 733             Xargs_size = _grow_cpp(&Xargs, Xargs_size + 8, Xargs_cnt);
 734          Xargs[Xargs_cnt++] = _oarg;
 735          break;
 736       case ':':
 737          /* Control which resource files shall be loaded */
 738          if(!(resfiles & (a_RF_SET | a_RF_SYSTEM))){
 739             emsg = N_("-n cannot be used in conjunction with -:");
 740             goto jusage;
 741          }
 742          resfiles = a_RF_SET;
 743          while((i = *_oarg++) != '\0')
 744             switch(i){
 745             case 'S': case 's': resfiles |= a_RF_SYSTEM; break;
 746             case 'U': case 'u': resfiles |= a_RF_USER; break;
 747             case ':': case '/': resfiles &= ~a_RF_ALL; break;
 748             default:
 749                emsg = N_("Invalid argument of -:");
 750                goto jusage;
 751             }
 752          break;
 753       case '~':
 754          /* Enable tilde escapes even in non-interactive mode */
 755          options |= OPT_TILDE_FLAG;
 756          break;
 757       case '#':
 758          /* Work in batch mode, even if non-interactive */
 759          if (oargs_cnt + 5 >= oargs_size)
 760             oargs_size = _grow_cpp(&oargs, oargs_size + 8, oargs_cnt);
 761          options |= OPT_TILDE_FLAG | OPT_BATCH_FLAG;
 762          folder = "/dev/null";
 763          ok_bset(emptystart, TRU1);
 764          ok_bset(header, FAL0);
 765          ok_bset(quiet, TRU1);
 766          ok_bset(sendwait, TRU1);
 767          ok_vset(MBOX, folder);
 768          oargs[oargs_cnt + 0] = "emptystart";
 769          oargs[oargs_cnt + 1] = "noheader";
 770          oargs[oargs_cnt + 2] = "quiet";
 771          oargs[oargs_cnt + 3] = "sendwait";
 772          oargs[oargs_cnt + 4] = "MBOX=/dev/null";
 773          oargs_cnt += 5;
 774          break;
 775       case '.':
 776          options |= OPT_SENDMODE;
 777          goto jgetopt_done;
 778       case '?':
 779 jusage:
 780          if (emsg != NULL)
 781             n_err("%s\n", V_(emsg));
 782          n_err(V_(usagestr) _USAGE_ARGS);
 783 #undef _USAGE_ARGS
 784          exit_status = EXIT_USE;
 785          goto j_leave;
 786       }
 787    }
 788 jgetopt_done:
 789    ;
 790
 791    /* The normal arguments may be followed by MTA arguments after a "--";
 792     * however, -f may take off an argument, too, and before that.
 793     * Since MTA arguments after "--" require *expandargv*, delay parsing off
 794     * those options until after the resource files are loaded... */
 795    if ((cp = argv[i = _oind]) == NULL)
 796       ;
 797    else if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0')
 798       ++i;
 799    /* OPT_BATCH_FLAG sets to /dev/null, but -f can still be used and sets & */
 800    else if (folder != NULL && /*folder[0] == '&' &&*/ folder[1] == '\0') {
 801       folder = cp;
 802       if ((cp = argv[++i]) != NULL) {
 803          if (cp[0] != '-' || cp[1] != '-' || cp[2] != '\0') {
 804             emsg = N_("More than one file given with -f");
 805             goto jusage;
 806          }
 807          ++i;
 808       }
 809    } else {
 810       options |= OPT_SENDMODE;
 811       for (;;) {
 812          to = cat(to, lextract(cp, GTO | GFULL));
 813          if ((cp = argv[++i]) == NULL)
 814             break;
 815          if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0') {
 816             ++i;
 817             break;
 818          }
 819       }
 820    }
 821    _oind = i;
 822
 823    /* ...BUT, since we use salloc() for the MTA smopts storage we need to
 824     * allocate the necessary space for them before we call spreserve()! */
 825    while (argv[i] != NULL)
 826       ++i;
 827    if (smopts_cnt + i > smopts_size)
 828       DBG(smopts_size =) _grow_cpp(&smopts, smopts_cnt + i + 1, smopts_cnt);
 829
 830    /* Check for inconsistent arguments, fix some temporaries */
 831    if (options & OPT_SENDMODE) {
 832       /* XXX This is only because BATCH_FLAG sets *folder*=/dev/null
 833        * XXX in order to function.  Ideally that would not be needed */
 834       if (folder != NULL && !(options & OPT_BATCH_FLAG)) {
 835          emsg = N_("Cannot give -f and people to send to.");
 836          goto jusage;
 837       }
 838       if (myname != NULL) {
 839          emsg = N_("The -u option cannot be used in send mode");
 840          goto jusage;
 841       }
 842       if (!(options & OPT_t_FLAG) && to == NULL) {
 843          emsg = N_("Send options without primary recipient specified.");
 844          goto jusage;
 845       }
 846       if ((options & OPT_t_FLAG) && qf != NULL) {
 847          emsg = N_("-t and -q are mutual exclusive.");
 848          goto jusage;
 849       }
 850       if (options & (OPT_EXISTONLY | OPT_HEADERSONLY | OPT_HEADERLIST)) {
 851          emsg = N_("The -e, -H and -L options cannot be used in send mode.");
 852          goto jusage;
 853       }
 854       if (options & OPT_R_FLAG) {
 855          emsg = N_("The -R option is meaningless in send mode.");
 856          goto jusage;
 857       }
 858    } else {
 859       if (myname != NULL && folder != NULL) {
 860          emsg = N_("The options -u and -f (and -#) are mutually exclusive");
 861          goto jusage;
 862       }
 863       if ((options & (OPT_EXISTONLY | OPT_HEADERSONLY)) ==
 864             (OPT_EXISTONLY | OPT_HEADERSONLY)) {
 865          emsg = N_("The options -e and -H are mutual exclusive");
 866          goto jusage;
 867       }
 868       if ((options & (OPT_HEADERSONLY | OPT_HEADERLIST)) == /* TODO OBSOLETE */
 869             (OPT_HEADERSONLY | OPT_HEADERLIST))
 870          OBSOLETE(_("please use \"-e -L xy\" instead of \"-H -L xy\""));
 871
 872       if(myname != NULL)
 873          folder = myname;
 874    }
 875
 876    /*
 877     * Likely to go, perform more setup
 878     */
 879
 880    _setup_vars();
 881
 882    if (options & OPT_INTERACTIVE) {
 883       /* Now we can finally check wether -q- was given */
 884       if (qf == (char*)-1) {
 885          emsg = N_("In interactive mode -q cannot use standard input \"-\"\n");
 886          goto jusage;
 887       }
 888
 889       _setscreensize(0);
 890 #ifdef SIGWINCH
 891 # ifndef TTY_WANTS_SIGWINCH
 892       if (safe_signal(SIGWINCH, SIG_IGN) != SIG_IGN)
 893 # endif
 894          safe_signal(SIGWINCH, &_setscreensize);
 895 #endif
 896    } else
 897       scrnheight = realscreenheight = 24, scrnwidth = 80;
 898
 899    /* Snapshot our string pools.  Memory is auto-reclaimed from now on */
 900    spreserve();
 901
 902    /* load() any resource files */
 903    if(resfiles & a_RF_ALL){
 904       /* *expand() returns a savestr(), but load only uses the file name for
 905        * fopen(), so it's safe to do this */
 906       if((resfiles & a_RF_SYSTEM) && !ok_blook(NAIL_NO_SYSTEM_RC))
 907          n_load(SYSCONFDIR "/" SYSCONFRC);
 908       if(resfiles & a_RF_USER)
 909          n_load(file_expand(ok_vlook(MAILRC)));
 910       if((cp = ok_vlook(NAIL_EXTRA_RC)) != NULL)
 911          n_load(file_expand(cp));
 912    }
 913
 914    /* Ensure the -S and other command line options take precedence over
 915     * anything that may have been placed in resource files.
 916     * Our "ternary binary" option *verbose* needs special treament */
 917    if ((options & (OPT_VERB | OPT_VERBVERB)) == OPT_VERB)
 918       options &= ~OPT_VERB;
 919    /* ..and be silent when unsetting an undefined variable */
 920    pstate |= PS_ROBOT;
 921    for (i = 0; UICMP(z, i, <, oargs_cnt); ++i) {
 922       char const *a[2];
 923       a[0] = oargs[i];
 924       a[1] = NULL;
 925       c_set(a);
 926    }
 927    pstate &= ~PS_ROBOT;
 928
 929    /* Additional options to pass-through to MTA, and allowed to do so? */
 930    if ((cp = ok_vlook(expandargv)) != NULL) {
 931       bool_t isfail = !asccasecmp(cp, "fail"),
 932          isrestrict = (!isfail && !asccasecmp(cp, "restrict"));
 933
 934       if ((options & OPT_D_V) && !isfail && !isrestrict && *cp != '\0')
 935          n_err(_("Unknown *expandargv* value: \"%s\"\n"), cp);
 936
 937       if ((cp = argv[i = _oind]) != NULL) {
 938          if (isfail ||
 939                (isrestrict && !(options & (OPT_INTERACTIVE |OPT_TILDE_FLAG)))) {
 940             n_err(_("*expandargv* doesn't allow MTA arguments; consider "
 941                "using *sendmail-arguments*\n"));
 942             exit_status = EXIT_USE | EXIT_SEND_ERROR;
 943             goto jleave;
 944          }
 945          do {
 946             assert(smopts_cnt + 1 <= smopts_size);
 947             smopts[smopts_cnt++] = cp;
 948          } while ((cp = argv[++i]) != NULL);
 949       }
 950    }
 951
 952    /* We had to wait until the resource files are loaded and any command line
 953     * setting has been restored, but get the termcap up and going before we
 954     * switch account or running commands */
 955 #ifdef n_HAVE_TCAP
 956    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
 957       n_termcap_init();
 958 #endif
 959
 960    /* Now we can set the account */
 961    if (Aarg != NULL) {
 962       char const *a[2];
 963       a[0] = Aarg;
 964       a[1] = NULL;
 965       c_account(a);
 966    }
 967
 968    /* "load()" commands given on command line */
 969    if (Xargs_cnt > 0){
 970       Xargs[Xargs_cnt] = NULL;
 971       n_load_Xargs(Xargs);
 972    }
 973
 974    /*
 975     * We're finally completely setup and ready to go
 976     */
 977    pstate |= PS_STARTED;
 978
 979    if (!(options & OPT_SENDMODE)) {
 980       exit_status = _rcv_mode(folder, Larg);
 981       goto jleave;
 982    }
 983
 984    /* Now that full mailx(1)-style file expansion is possible handle the
 985     * attachments which we had delayed due to this.
 986     * This may use savestr(), but since we won't enter the command loop we
 987     * don't need to care about that */
 988    for (cp = NULL; a_head != NULL;) {
 989       struct attachment *nahp, *nap;
 990
 991       if ((nahp = add_attachment(attach, a_head->aa_file, &nap)) != NULL) {
 992          attach = nahp;
 993          /* Did we split a charset set name for fixation purposes? */
 994          if (cp != NULL) {
 995             nap->a_conv = AC_FIX_INCS;
 996             nap->a_input_charset = cp;
 997             cp = NULL;
 998          }
 999          a_head = a_head->aa_next;
1000          continue;
1001       }
1002       i = errno;
1003
1004       /* It may not have worked because of an appended character set name, so
1005        * try to split name and charset and retry once */
1006       if (cp == NULL && (cp = strrchr(a_head->aa_file, '=')) != NULL) {
1007          char *ncp, *nfp = savestrbuf(a_head->aa_file,
1008                PTR2SIZE(cp - a_head->aa_file));
1009
1010          for (ncp = ++cp; *ncp != '\0'; ++ncp)
1011             if (!alnumchar(*ncp) && !punctchar(*ncp))
1012                break;
1013          if (*ncp == '\0') {
1014             a_head->aa_file = nfp;
1015             continue;
1016          }
1017       }
1018
1019       n_perr(a_head->aa_file, i);
1020       exit_status = EXIT_ERR;
1021       goto jleave;
1022    }
1023
1024    if (options & OPT_INTERACTIVE)
1025       n_tty_init();
1026    mail(to, cc, bcc, subject, attach, qf, ((options & OPT_F_FLAG) != 0));
1027    if (options & OPT_INTERACTIVE)
1028       n_tty_destroy();
1029
1030 jleave:
1031 #ifdef n_HAVE_TCAP
1032    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
1033       n_termcap_destroy();
1034 #endif
1035 #ifdef HAVE_MEMORY_DEBUG
1036    sreset(FAL0);
1037 #endif
1038 j_leave:
1039 #ifdef HAVE_MEMORY_DEBUG
1040    n_memcheck();
1041 #endif
1042    NYD_LEAVE;
1043    return exit_status;
1044 }
1045
1046 FL int
1047 c_exit(void *v){/* TODO program state machine */
1048    NYD_ENTER;
1049    UNUSED(v);
1050
1051    if(pstate & PS_STARTED){
1052       if(!(pstate & PS_SOURCING)){
1053 #ifdef n_HAVE_TCAP
1054          if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) ==
1055                OPT_INTERACTIVE)
1056             n_termcap_destroy();
1057 #endif
1058          exit(EXIT_OK);
1059       }
1060    }
1061    pstate |= PS_EXIT;
1062    NYD_LEAVE;
1063    return 0;
1064 }
1065
1066 /* Source the others in that case! */
1067 #ifdef HAVE_AMALGAMATION
1068 # include "config.h"
1069 #endif
1070
1071 /* s-it-mode */