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 - 2016 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
   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 VAL_UAGENT] = VAL_UAGENT;
  67 VL ui16_t const      class_char[1 + 0x7F] = {
  68 #define a_BC C_BLANK | C_CNTRL
  69 #define a_SC C_SPACE | C_CNTRL
  70 #define a_WC C_WHITE | C_CNTRL
  71 /* 000 nul  001 soh  002 stx  003 etx  004 eot  005 enq  006 ack  007 bel */
  72    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  73 /* 010 bs   011 ht   012 nl   013 vt   014 np   015 cr   016 so   017 si */
  74    C_CNTRL, a_BC,    a_WC,    a_SC,    a_SC,    a_SC,    C_CNTRL, C_CNTRL,
  75 /* 020 dle  021 dc1  022 dc2  023 dc3  024 dc4  025 nak  026 syn  027 etb */
  76    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  77 /* 030 can  031 em   032 sub  033 esc  034 fs   035 gs   036 rs   037 us */
  78    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  79 #undef a_WC
  80 #undef a_SC
  81 #undef a_BC
  82 /* 040 sp   041  !   042  "   043  #   044  $   045  %   046  &   047  ' */
  83    C_BLANK, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  84 /* 050  (   051  )   052  *   053  +   054  ,    055  -   056  .   057  / */
  85    C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  86 /* 060  0   061  1   062  2   063  3   064  4   065  5   066  6   067  7 */
  87    C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL,
  88 /* 070  8   071  9   072  :   073  ;   074  <   075  =   076  >   077  ? */
  89    C_DIGIT, C_DIGIT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  90 /* 100  @   101  A   102  B   103  C   104  D   105  E   106  F   107  G */
  91    C_PUNCT, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  92 /* 110  H   111  I   112  J   113  K   114  L   115  M   116  N   117  O */
  93    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  94 /* 120  P   121  Q   122  R   123  S   124  T   125  U   126  V   127  W */
  95    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  96 /* 130  X   131  Y   132  Z   133  [   134  \   135  ]   136  ^   137  _ */
  97    C_UPPER, C_UPPER, C_UPPER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  98 /* 140  `   141  a   142  b   143  c   144  d   145  e   146  f   147  g */
  99    C_PUNCT, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 100 /* 150  h   151  i   152  j   153  k   154  l   155  m   156  n   157  o */
 101    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 102 /* 160  p   161  q   162  r   163  s   164  t   165  u   166  v   167  w */
 103    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 104 /* 170  x   171  y   172  z   173  {   174  |   175  }   176  ~   177 del */
 105    C_LOWER, C_LOWER, C_LOWER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_CNTRL
 106 };
 107
 108 /* Our own little getopt(3) */
 109 static char          *_oarg;
 110 static int           _oind, /*_oerr,*/ _oopt;
 111
 112 /* Our own little getopt(3); note --help is special-treated as 'h' */
 113 static int     _getopt(int argc, char * const argv[], char const *optstring);
 114
 115 /* Perform basic startup initialization */
 116 static void    _startup(void);
 117
 118 /* Grow a char** */
 119 static size_t  _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt);
 120
 121 /* Setup some variables which we require to be valid / verified */
 122 static void    _setup_vars(void);
 123
 124 /* We're in an interactive session - compute what the screen size for printing
 125  * headers etc. should be; notify tty upon resize if *is_sighdl* is not 0.
 126  * We use the following algorithm for the height:
 127  * If baud rate < 1200, use  9
 128  * If baud rate = 1200, use 14
 129  * If baud rate > 1200, use 24 or ws_row
 130  * Width is either 80 or ws_col */
 131 static void    _setscreensize(int is_sighdl);
 132
 133 /* Ok, we are reading mail.  Decide whether we are editing a mailbox or reading
 134  * the system mailbox, and open up the right stuff */
 135 static int     _rcv_mode(char const *folder, char const *Larg);
 136
 137 /* Interrupt printing of the headers */
 138 static void    _hdrstop(int signo);
 139
 140 static int
 141 _getopt(int argc, char * const argv[], char const *optstring)
 142 {
 143    static char const *lastp;
 144
 145    int rv = -1/*, colon*/;
 146    char const *curp;
 147    NYD_ENTER;
 148
 149    _oarg = NULL;
 150
 151    /*if ((colon = (optstring[0] == ':')))
 152       ++optstring;*/
 153
 154    if (lastp != NULL) {
 155       curp = lastp;
 156       lastp = NULL;
 157    } else {
 158       if (_oind >= argc || argv[_oind] == NULL || argv[_oind][0] != '-' ||
 159             argv[_oind][1] == '\0')
 160          goto jleave;
 161       if (argv[_oind][1] == '-' && argv[_oind][2] == '\0') {
 162          /* We need this in for MTA arg detection (easier) ++_oind;*/
 163          goto jleave;
 164       }
 165       curp = &argv[_oind][1];
 166    }
 167
 168    for(_oopt = curp[0]; optstring[0] != '\0';){
 169       if(optstring[0] != _oopt){
 170          optstring += 1 + (optstring[1] == ':');
 171          continue;
 172       }
 173
 174       if (optstring[1] == ':') {
 175          if (curp[1] != '\0') {
 176             _oarg = UNCONST(curp + 1);
 177             ++_oind;
 178          } else {
 179             if ((_oind += 2) > argc) {
 180                /*if (!colon *//*&& _oerr*//*)*/ {
 181                   n_err(_("%s: option requires an argument -- %c\n"),
 182                      argv[0], (char)_oopt);
 183                }
 184                rv = (/*colon ? ':' :*/ '?');
 185                goto jleave;
 186             }
 187             _oarg = argv[_oind - 1];
 188          }
 189       } else {
 190          if (curp[1] != '\0')
 191             lastp = curp + 1;
 192          else
 193             ++_oind;
 194       }
 195       rv = _oopt;
 196       goto jleave;
 197    }
 198
 199    /* Special support for --help, which is quite common */
 200    if (_oopt == '-' && !strcmp(curp, "-help") && curp - 1 == argv[_oind]) {
 201       ++_oind;
 202       rv = 'h';
 203       goto jleave;
 204    }
 205
 206    /* Definitive error */
 207    /*if (!colon *//*&& opterr*//*)*/
 208       n_err(_("%s: invalid option -- %c\n"), argv[0], _oopt);
 209    if (curp[1] != '\0')
 210       lastp = curp + 1;
 211    else
 212       ++_oind;
 213    _oarg = NULL;
 214    rv = '?';
 215 jleave:
 216    NYD_LEAVE;
 217    return rv;
 218 }
 219
 220 static void
 221 _startup(void)
 222 {
 223    char *cp;
 224    NYD_ENTER;
 225
 226    image = -1;
 227    dflpipe = SIG_DFL;
 228    _oind = /*_oerr =*/ 1;
 229
 230    if ((cp = strrchr(progname, '/')) != NULL)
 231       progname = ++cp;
 232
 233    /* Set up a reasonable environment */
 234
 235 #ifdef HAVE_NYD
 236    safe_signal(SIGABRT, &_nyd_oncrash);
 237 # ifdef SIGBUS
 238    safe_signal(SIGBUS, &_nyd_oncrash);
 239 # endif
 240    safe_signal(SIGFPE, &_nyd_oncrash);
 241    safe_signal(SIGILL, &_nyd_oncrash);
 242    safe_signal(SIGSEGV, &_nyd_oncrash);
 243 #endif
 244    command_manager_start();
 245
 246    if (isatty(STDIN_FILENO)) /* TODO should be isatty(0) && isatty(2)?? */
 247       options |= OPT_TTYIN;
 248    if (isatty(STDOUT_FILENO))
 249       options |= OPT_TTYOUT;
 250    if ((options & (OPT_TTYIN | OPT_TTYOUT)) == (OPT_TTYIN | OPT_TTYOUT)) {
 251       options |= OPT_INTERACTIVE;
 252       safe_signal(SIGPIPE, dflpipe = SIG_IGN);
 253    }
 254
 255    /*  --  >8  --  8<  --  */
 256
 257 #ifndef HAVE_SETLOCALE
 258    mb_cur_max = 1;
 259 #else
 260    setlocale(LC_ALL, "");
 261    mb_cur_max = MB_CUR_MAX;
 262 # ifdef HAVE_NL_LANGINFO
 263    if(ok_vlook(ttycharset) == NULL && (cp = nl_langinfo(CODESET)) != NULL)
 264       ok_vset(ttycharset, cp);
 265 # endif
 266
 267 # ifdef HAVE_C90AMEND1
 268    if(mb_cur_max > 1){
 269 #  ifdef HAVE_ALWAYS_UNICODE_LOCALE
 270       options |= OPT_UNICODE;
 271 #  else
 272       wchar_t wc;
 273       if(mbtowc(&wc, "\303\266", 2) == 2 && wc == 0xF6 &&
 274             mbtowc(&wc, "\342\202\254", 3) == 3 && wc == 0x20AC)
 275          options |= OPT_UNICODE;
 276       /* Reset possibly messed up state; luckily this also gives us an
 277        * indication whether the encoding has locking shift state sequences */
 278       if(mbtowc(&wc, NULL, mb_cur_max))
 279          options |= OPT_ENC_MBSTATE;
 280 #  endif
 281    }
 282 # endif
 283 #endif
 284
 285 #ifdef HAVE_ICONV
 286    iconvd = (iconv_t)-1;
 287 #endif
 288    NYD_LEAVE;
 289 }
 290
 291 static size_t
 292 _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt)
 293 {
 294    /* Before spreserve(): use our string pool instead of LibC heap */
 295    char const **newcpp;
 296    NYD_ENTER;
 297
 298    newcpp = salloc(sizeof(char*) * newsize);
 299
 300    if (oldcnt > 0)
 301       memcpy(newcpp, *cpp, oldcnt * sizeof(char*));
 302    *cpp = newcpp;
 303    NYD_LEAVE;
 304    return newsize;
 305 }
 306
 307 static void
 308 _setup_vars(void){
 309    /* XXX furtherly check paths? */
 310    struct passwd *pwuid;
 311    char const *cp;
 312    NYD_ENTER;
 313
 314    group_id = getgid();
 315    if((pwuid = getpwuid(user_id = getuid())) == NULL)
 316       n_panic(_("Cannot associate a name with uid %lu"), (ul_i)user_id);
 317    myname = savestr(pwuid->pw_name); /* XXX replace uses with vlook(LOGNAME)! */
 318
 319    /* C99 */{
 320       char const *ep;
 321       bool_t doenv;
 322
 323       if(!(doenv = (ep = ok_vlook(LOGNAME)) == NULL) &&
 324             (doenv = strcmp(myname, ep)))
 325          n_err(_("Warning: $LOGNAME (%s) not identical to user (%s)!\n"),
 326             ep, myname);
 327       if(doenv){
 328          pstate |= PS_ROOT;
 329          ok_vset(LOGNAME, myname);
 330          pstate &= ~PS_ROOT;
 331       }
 332
 333       if((ep = ok_vlook(USER)) != NULL && strcmp(myname, ep)){
 334          n_err(_("Warning: $USER (%s) not identical to user (%s)!\n"),
 335             ep, myname);
 336          pstate |= PS_ROOT;
 337          ok_vset(USER, myname);
 338          pstate &= ~PS_ROOT;
 339       }
 340    }
 341
 342    /* XXX myfullname = pw->pw_gecos[OPTIONAL!] -> GUT THAT; TODO pw_shell */
 343
 344    /* */
 345    if((cp = ok_vlook(HOME)) == NULL){
 346       cp = pwuid->pw_dir;
 347       pstate |= PS_ROOT;
 348       ok_vset(HOME, cp);
 349       pstate &= ~PS_ROOT;
 350    }
 351
 352    (void)ok_vlook(TMPDIR);
 353    NYD_LEAVE;
 354 }
 355
 356 static void
 357 _setscreensize(int is_sighdl) /* TODO global policy; int wraps; minvals! */
 358 {
 359    struct termios tbuf;
 360 #ifdef TIOCGWINSZ
 361    struct winsize ws;
 362 #elif defined TIOCGSIZE
 363    struct ttysize ts;
 364 #endif
 365    NYD_ENTER;
 366
 367    scrnheight = realscreenheight = scrnwidth = 0;
 368
 369    /* (Also) POSIX: LINES and COLUMNS always override.  Adjust this
 370     * a little bit to be able to honour resizes during our lifetime and
 371     * only honour it upon first run; abuse *is_sighdl* as an indicator */
 372    if (!is_sighdl) {
 373       char *cp;
 374
 375       /* We manage those variables for our child processes, so ensure they
 376        * are up to date, always */
 377       if (options & OPT_INTERACTIVE)
 378          pstate |= PS_SIGWINCH_PEND;
 379
 380       if ((cp = ok_vlook(LINES)) != NULL)
 381          scrnheight = realscreenheight = (int)strtoul(cp, NULL, 0); /* TODO */
 382       if ((cp = ok_vlook(COLUMNS)) != NULL)
 383          scrnwidth = (int)strtoul(cp, NULL, 0); /* TODO posui32= not posnum=! */
 384
 385       if (scrnwidth != 0 && scrnheight != 0)
 386          goto jleave;
 387    }
 388
 389 #ifdef TIOCGWINSZ
 390    if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1)
 391       ws.ws_col = ws.ws_row = 0;
 392 #elif defined TIOCGSIZE
 393    if (ioctl(STDOUT_FILENO, TIOCGSIZE, &ws) == -1)
 394       ts.ts_lines = ts.ts_cols = 0;
 395 #endif
 396
 397    if (scrnheight == 0) {
 398       speed_t ospeed = ((tcgetattr(STDOUT_FILENO, &tbuf) == -1)
 399             ? B9600 : cfgetospeed(&tbuf));
 400
 401       if (ospeed < B1200)
 402          scrnheight = 9;
 403       else if (ospeed == B1200)
 404          scrnheight = 14;
 405 #ifdef TIOCGWINSZ
 406       else if (ws.ws_row != 0)
 407          scrnheight = ws.ws_row;
 408 #elif defined TIOCGSIZE
 409       else if (ts.ts_lines != 0)
 410          scrnheight = ts.ts_lines;
 411 #endif
 412       else
 413          scrnheight = 24;
 414
 415 #if defined TIOCGWINSZ || defined TIOCGSIZE
 416       if (0 ==
 417 # ifdef TIOCGWINSZ
 418             (realscreenheight = ws.ws_row)
 419 # else
 420             (realscreenheight = ts.ts_lines)
 421 # endif
 422       )
 423          realscreenheight = 24;
 424 #endif
 425    }
 426
 427    if (scrnwidth == 0 && 0 ==
 428 #ifdef TIOCGWINSZ
 429          (scrnwidth = ws.ws_col)
 430 #elif defined TIOCGSIZE
 431          (scrnwidth = ts.ts_cols)
 432 #endif
 433    )
 434       scrnwidth = 80;
 435
 436 jleave:
 437 #ifdef SIGWINCH
 438    if (is_sighdl) {
 439       pstate |= PS_SIGWINCH_PEND; /* XXX Not atomic */
 440       if (options & OPT_INTERACTIVE)
 441          n_tty_signal(SIGWINCH);
 442    }
 443 #endif
 444    NYD_LEAVE;
 445 }
 446
 447 static sigjmp_buf __hdrjmp; /* XXX */
 448
 449 static int
 450 _rcv_mode(char const *folder, char const *Larg)
 451 {
 452    int i;
 453    sighandler_type prevint;
 454    NYD_ENTER;
 455
 456    if (folder == NULL)
 457       folder = "%";
 458
 459    if (options & OPT_QUICKRUN_MASK)
 460       i = FEDIT_RDONLY;
 461    else
 462       i = FEDIT_NONE;
 463    i = setfile(folder, i);
 464    if (i < 0) {
 465       exit_status = EXIT_ERR; /* error already reported */
 466       goto jquit;
 467    }
 468    if (options & OPT_QUICKRUN_MASK) {
 469       exit_status = i;
 470       if (i == EXIT_OK && (!(options & OPT_EXISTONLY) ||
 471             (options & OPT_HEADERLIST)))
 472          print_header_summary(Larg);
 473       goto jquit;
 474    }
 475    check_folder_hook(FAL0);
 476
 477    if (i > 0 && !ok_blook(emptystart)) {
 478       exit_status = EXIT_ERR;
 479       goto jleave;
 480    }
 481
 482    if (sigsetjmp(__hdrjmp, 1) == 0) {
 483       if ((prevint = safe_signal(SIGINT, SIG_IGN)) != SIG_IGN)
 484          safe_signal(SIGINT, _hdrstop);
 485       if (!(options & OPT_N_FLAG)) {
 486          if (!ok_blook(quiet))
 487             printf(_("%s version %s.  Type `?' for help\n"),
 488                (ok_blook(bsdcompat) ? "Mail" : uagent), ok_vlook(version));
 489          announce(1);
 490          fflush(stdout);
 491       }
 492       safe_signal(SIGINT, prevint);
 493    }
 494
 495    /* Enter the command loop */
 496    if (options & OPT_INTERACTIVE)
 497       n_tty_init();
 498    n_commands();
 499    if (options & OPT_INTERACTIVE)
 500       n_tty_destroy();
 501
 502    if (mb.mb_type == MB_FILE || mb.mb_type == MB_MAILDIR) {
 503       safe_signal(SIGHUP, SIG_IGN);
 504       safe_signal(SIGINT, SIG_IGN);
 505       safe_signal(SIGQUIT, SIG_IGN);
 506    }
 507 jquit:
 508    save_mbox_for_possible_quitstuff();
 509    quit();
 510 jleave:
 511    NYD_LEAVE;
 512    return exit_status;
 513 }
 514
 515 static void
 516 _hdrstop(int signo)
 517 {
 518    NYD_X; /* Signal handler */
 519    UNUSED(signo);
 520
 521    fflush(stdout);
 522    n_err_sighdl(_("\nInterrupt\n"));
 523    siglongjmp(__hdrjmp, 1);
 524 }
 525
 526 int
 527 main(int argc, char *argv[]){
 528    /* Keep in SYNC: ./nail.1:"SYNOPSIS, main() */
 529    static char const
 530       optstr[] = "A:a:Bb:c:dEeFfHhiL:M:m:NnO:q:Rr:S:s:tu:VvX:::~#.",
 531       usagestr[] = N_(
 532          "Synopsis:\n"
 533          "  %s -h\n"
 534
 535          "  %s [-BdEFintv~] [-: spec] [-A account]\n"
 536          "\t [-a attachment] [-b bcc-addr] [-c cc-addr]\n"
 537          "\t [-M type | -m file | -q file | -t]\n"
 538          "\t [-r from-addr] [-S var[=value]..]\n"
 539          "\t [-s subject] [-X cmd] [-.] to-addr.. [-- mta-option..]\n"
 540
 541          "  %s [-BdEeHiNnRv~] [-: spec] [-A account]\n"
 542          "\t [-L spec-list] [-r from-addr] [-S var[=value]..]\n"
 543          "\t [-u user] [-X cmd] [-- mta-option..]\n"
 544
 545          "  %s [-BdEeHiNnRv~#] [-: spec] [-A account] -f\n"
 546          "\t [-L spec-list] [-r from-addr] [-S var[=value]..]\n"
 547          "\t [-X cmd] [file] [-- mta-option..]\n"
 548       );
 549 #define _USAGE_ARGS , progname, progname, progname, progname
 550
 551    struct a_arg *a_head, *a_curr;
 552    struct name *to, *cc, *bcc;
 553    struct attachment *attach;
 554    char *cp, *subject, *qf, *Aarg, *Larg;
 555    char const *okey, **oargs, **Xargs, *folder, *emsg;
 556    size_t oargs_size, oargs_cnt, Xargs_size, Xargs_cnt, smopts_size;
 557    enum{
 558       a_RF_NONE = 0,
 559       a_RF_SET = 1<<0,
 560       a_RF_SYSTEM = 1<<1,
 561       a_RF_USER = 1<<2,
 562       a_RF_ALL = a_RF_SYSTEM | a_RF_USER
 563    } resfiles;
 564    int i;
 565    NYD_ENTER;
 566
 567    a_head = NULL;
 568    UNINIT(a_curr, NULL);
 569    to = cc = bcc = NULL;
 570    attach = NULL;
 571    cp = subject = qf =
 572          Aarg = Larg = NULL;
 573    oargs = Xargs = NULL;
 574    folder = emsg = NULL;
 575    oargs_size = oargs_cnt = Xargs_size = Xargs_cnt = smopts_size = 0;
 576    resfiles = a_RF_ALL;
 577
 578    /*
 579     * Start our lengthy setup, finalize by setting PS_STARTED
 580     */
 581
 582    progname = argv[0];
 583    _startup();
 584
 585    /* Command line parsing
 586     * Variable settings need to be done twice, since the user surely wants the
 587     * setting to take effect immediately, but also doesn't want it to be
 588     * overwritten from within resource files */
 589    while ((i = _getopt(argc, argv, optstr)) >= 0) {
 590       switch (i) {
 591       case 'A':
 592          /* Execute an account command later on */
 593          Aarg = _oarg;
 594          break;
 595       case 'a':
 596          options |= OPT_SENDMODE;
 597          {  struct a_arg *nap = salloc(sizeof(struct a_arg));
 598             if (a_head == NULL)
 599                a_head = nap;
 600             else
 601                a_curr->aa_next = nap;
 602             nap->aa_next = NULL;
 603             nap->aa_file = _oarg;
 604             a_curr = nap;
 605          }
 606          break;
 607       case 'B':
 608          /* Make 0/1 line buffered */
 609          setvbuf(stdin, NULL, _IOLBF, 0);
 610          setvbuf(stdout, NULL, _IOLBF, 0);
 611          break;
 612       case 'b':
 613          /* Get Blind Carbon Copy Recipient list */
 614          options |= OPT_SENDMODE;
 615          bcc = cat(bcc, lextract(_oarg, GBCC | GFULL));
 616          break;
 617       case 'c':
 618          /* Get Carbon Copy Recipient list */
 619          options |= OPT_SENDMODE;
 620          cc = cat(cc, lextract(_oarg, GCC | GFULL));
 621          break;
 622       case 'd':
 623          ok_bset(debug);
 624          okey = "debug";
 625          goto joarg;
 626       case 'E':
 627          ok_bset(skipemptybody);
 628          okey = "skipemptybody";
 629          goto joarg;
 630       case 'e':
 631          options |= OPT_EXISTONLY;
 632          break;
 633       case 'F':
 634          options |= OPT_F_FLAG | OPT_SENDMODE;
 635          break;
 636       case 'f':
 637          /* User is specifying file to "edit" with Mail, as opposed to reading
 638           * system mailbox.  If no argument is given, we read his mbox file.
 639           * Check for remaining arguments later */
 640          folder = "&";
 641          break;
 642       case 'H':
 643          options |= OPT_HEADERSONLY;
 644          break;
 645       case 'h':
 646          n_err(V_(usagestr) _USAGE_ARGS);
 647          goto j_leave;
 648       case 'i':
 649          /* Ignore interrupts */
 650          ok_bset(ignore);
 651          okey = "ignore";
 652          goto joarg;
 653       case 'L':
 654          Larg = _oarg;
 655          options |= OPT_HEADERLIST;
 656          if (*Larg == '"' || *Larg == '\'') { /* TODO list.c:listspec_check() */
 657             size_t j = strlen(++Larg);
 658             if (j > 0)
 659                Larg[j - 1] = '\0';
 660          }
 661          break;
 662       case 'M':
 663          if(qf != NULL && (!(options & OPT_Mm_FLAG) || qf != (char*)-1))
 664             goto jeMmq;
 665          option_Mm_arg = _oarg;
 666          qf = (char*)-1;
 667          if(0){
 668             /* FALLTHRU*/
 669       case 'm':
 670             if(qf != NULL && (!(options & OPT_Mm_FLAG) || qf == (char*)-1))
 671                goto jeMmq;
 672             qf = _oarg;
 673          }
 674          options |= OPT_SENDMODE | OPT_Mm_FLAG;
 675          break;
 676       case 'N':
 677          /* Avoid initial header printing */
 678          ok_bclear(header);
 679          okey = "noheader";
 680          goto joarg;
 681       case 'n':
 682          /* Don't source "unspecified system start-up file" */
 683          if(resfiles & a_RF_SET){
 684             emsg = N_("-n cannot be used in conjunction with -:");
 685             goto jusage;
 686          }
 687          resfiles = a_RF_USER;
 688          break;
 689       case 'O':
 690          /* Additional options to pass-through to MTA TODO v15-compat legacy */
 691          if (smopts_cnt == smopts_size)
 692             smopts_size = _grow_cpp(&smopts, smopts_size + 8, smopts_cnt);
 693          smopts[smopts_cnt++] = _oarg;
 694          break;
 695       case 'q':
 696          if (qf != NULL && (options & OPT_Mm_FLAG)) {
 697 jeMmq:
 698             emsg = N_("Only one of -M, -m or -q may be given");
 699             goto jusage;
 700          }
 701          /* Quote file TODO drop? -Q with real quote?? what ? */
 702          options |= OPT_SENDMODE;
 703          /* Allow for now, we have to special check validity of -q- later on! */
 704          qf = (_oarg[0] == '-' && _oarg[1] == '\0') ? (char*)-1 : _oarg;
 705          break;
 706       case 'R':
 707          /* Open folders read-only */
 708          options |= OPT_R_FLAG;
 709          break;
 710       case 'r':
 711          /* Set From address. */
 712          options |= OPT_r_FLAG;
 713          if (_oarg[0] != '\0') {
 714             struct name *fa = nalloc(_oarg, GSKIN | GFULL | GFULLEXTRA);
 715
 716             if (is_addr_invalid(fa, EACM_STRICT | EACM_NOLOG)) {
 717                emsg = N_("Invalid address argument with -r");
 718                goto jusage;
 719             }
 720             option_r_arg = fa;
 721             /* TODO -r options is set in smopts, but may
 722              * TODO be overwritten by setting from= in
 723              * TODO an interactive session!
 724              * TODO Maybe disable setting of from?
 725              * TODO Warn user?  Update manual!! */
 726             okey = savecat("from=", fa->n_fullname);
 727             goto joarg;
 728          }
 729          break;
 730       case 'S':
 731          /* Set variable (TODO twice [only if successful]) */
 732          {  char *a[2];
 733             bool_t b;
 734
 735             okey = a[0] = _oarg;
 736             a[1] = NULL;
 737             pstate |= PS_ROBOT;
 738             b = (c_set(a) == 0);
 739             pstate &= ~PS_ROBOT;
 740             if(!b)
 741                break;
 742          }
 743 joarg:
 744          if (oargs_cnt == oargs_size)
 745             oargs_size = _grow_cpp(&oargs, oargs_size + 8, oargs_cnt);
 746          oargs[oargs_cnt++] = okey;
 747          break;
 748       case 's':
 749          /* Subject: */
 750          subject = _oarg;
 751          options |= OPT_SENDMODE;
 752          break;
 753       case 't':
 754          /* Read defined set of headers from mail to be sent */
 755          options |= OPT_SENDMODE | OPT_t_FLAG;
 756          break;
 757       case 'u':
 758          /* Temporarily set myname so that we can recognize the -u condition */
 759          myname = savecat("%", _oarg);
 760          break;
 761       case 'V':
 762          printf(_("%s version %s\n"), uagent, ok_vlook(version));
 763          exit_status = EXIT_OK;
 764          goto j_leave;
 765       case 'v':
 766          /* Be verbose */
 767          ok_bset(verbose);
 768          okey = "verbose";
 769          goto joarg;
 770       case 'X':
 771          /* Add to list of commands to exec before entering normal operation */
 772          if (Xargs_cnt == Xargs_size)
 773             Xargs_size = _grow_cpp(&Xargs, Xargs_size + 8, Xargs_cnt);
 774          Xargs[Xargs_cnt++] = _oarg;
 775          break;
 776       case ':':
 777          /* Control which resource files shall be loaded */
 778          if(!(resfiles & (a_RF_SET | a_RF_SYSTEM))){
 779             emsg = N_("-n cannot be used in conjunction with -:");
 780             goto jusage;
 781          }
 782          resfiles = a_RF_SET;
 783          while((i = *_oarg++) != '\0')
 784             switch(i){
 785             case 'S': case 's': resfiles |= a_RF_SYSTEM; break;
 786             case 'U': case 'u': resfiles |= a_RF_USER; break;
 787             case ':': case '/': resfiles &= ~a_RF_ALL; break;
 788             default:
 789                emsg = N_("Invalid argument of -:");
 790                goto jusage;
 791             }
 792          break;
 793       case '~':
 794          /* Enable tilde escapes even in non-interactive mode */
 795          options |= OPT_TILDE_FLAG;
 796          break;
 797       case '#':
 798          /* Work in batch mode, even if non-interactive */
 799          options |= OPT_TILDE_FLAG | OPT_BATCH_FLAG;
 800          if (oargs_cnt + 8 >= oargs_size)
 801             oargs_size = _grow_cpp(&oargs, oargs_size + 9, oargs_cnt);
 802          folder = "/dev/null";
 803          ok_vset(MAIL, folder);
 804          ok_vset(MBOX, folder);
 805          ok_bset(emptystart);
 806          ok_bclear(header);
 807          ok_vset(inbox, folder);
 808          ok_bset(quiet);
 809          ok_bset(sendwait);
 810          ok_bset(typescript_mode);
 811          oargs[oargs_cnt + 0] = "MAIL=/dev/null";
 812          oargs[oargs_cnt + 1] = "MBOX=/dev/null";
 813          oargs[oargs_cnt + 2] = "emptystart";
 814          oargs[oargs_cnt + 3] = "noheader";
 815          oargs[oargs_cnt + 4] = "inbox=/dev/null";
 816          oargs[oargs_cnt + 5] = "quiet";
 817          oargs[oargs_cnt + 6] = "sendwait";
 818          oargs[oargs_cnt + 7] = "typescript-mode";
 819          oargs_cnt += 8;
 820          break;
 821       case '.':
 822          options |= OPT_SENDMODE;
 823          goto jgetopt_done;
 824       case '?':
 825 jusage:
 826          if (emsg != NULL)
 827             n_err("%s\n", V_(emsg));
 828          n_err(V_(usagestr) _USAGE_ARGS);
 829 #undef _USAGE_ARGS
 830          exit_status = EXIT_USE;
 831          goto j_leave;
 832       }
 833    }
 834 jgetopt_done:
 835    ;
 836
 837    /* The normal arguments may be followed by MTA arguments after a "--";
 838     * however, -f may take off an argument, too, and before that.
 839     * Since MTA arguments after "--" require *expandargv*, delay parsing off
 840     * those options until after the resource files are loaded... */
 841    if ((cp = argv[i = _oind]) == NULL)
 842       ;
 843    else if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0')
 844       ++i;
 845    /* OPT_BATCH_FLAG sets to /dev/null, but -f can still be used and sets & */
 846    else if (folder != NULL && /*folder[0] == '&' &&*/ folder[1] == '\0') {
 847       folder = cp;
 848       if ((cp = argv[++i]) != NULL) {
 849          if (cp[0] != '-' || cp[1] != '-' || cp[2] != '\0') {
 850             emsg = N_("More than one file given with -f");
 851             goto jusage;
 852          }
 853          ++i;
 854       }
 855    } else {
 856       options |= OPT_SENDMODE;
 857       for (;;) {
 858          to = cat(to, lextract(cp, GTO | GFULL));
 859          if ((cp = argv[++i]) == NULL)
 860             break;
 861          if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0') {
 862             ++i;
 863             break;
 864          }
 865       }
 866    }
 867    _oind = i;
 868
 869    /* ...BUT, since we use salloc() for the MTA smopts storage we need to
 870     * allocate the necessary space for them before we call spreserve()! */
 871    while (argv[i] != NULL)
 872       ++i;
 873    if (smopts_cnt + i > smopts_size)
 874       DBG(smopts_size =) _grow_cpp(&smopts, smopts_cnt + i + 1, smopts_cnt);
 875
 876    /* Check for inconsistent arguments, fix some temporaries */
 877    if (options & OPT_SENDMODE) {
 878       /* XXX This is only because BATCH_FLAG sets *folder*=/dev/null
 879        * XXX in order to function.  Ideally that would not be needed */
 880       if (folder != NULL && !(options & OPT_BATCH_FLAG)) {
 881          emsg = N_("Cannot give -f and people to send to.");
 882          goto jusage;
 883       }
 884       if (myname != NULL) {
 885          emsg = N_("The -u option cannot be used in send mode");
 886          goto jusage;
 887       }
 888       if (!(options & OPT_t_FLAG) && to == NULL) {
 889          emsg = N_("Send options without primary recipient specified.");
 890          goto jusage;
 891       }
 892       if ((options & OPT_t_FLAG) && qf != NULL) {
 893          emsg = N_("The -M, -m, -q and -t options are mutual exclusive.");
 894          goto jusage;
 895       }
 896       if (options & (OPT_EXISTONLY | OPT_HEADERSONLY | OPT_HEADERLIST)) {
 897          emsg = N_("The -e, -H and -L options cannot be used in send mode.");
 898          goto jusage;
 899       }
 900       if (options & OPT_R_FLAG) {
 901          emsg = N_("The -R option is meaningless in send mode.");
 902          goto jusage;
 903       }
 904
 905       if (options & OPT_INTERACTIVE) {
 906          if (qf == (char*)-1) {
 907             if (!(options & OPT_Mm_FLAG))
 908                emsg = N_("-q can't use standard input when interactive.\n");
 909             goto jusage;
 910          }
 911       }
 912    } else {
 913       if (myname != NULL && folder != NULL) {
 914          emsg = N_("The options -u and -f (and -#) are mutually exclusive");
 915          goto jusage;
 916       }
 917       if ((options & (OPT_EXISTONLY | OPT_HEADERSONLY)) ==
 918             (OPT_EXISTONLY | OPT_HEADERSONLY)) {
 919          emsg = N_("The options -e and -H are mutual exclusive");
 920          goto jusage;
 921       }
 922       if ((options & (OPT_HEADERSONLY | OPT_HEADERLIST)) == /* TODO OBSOLETE */
 923             (OPT_HEADERSONLY | OPT_HEADERLIST))
 924          OBSOLETE(_("please use \"-e -L xy\" instead of \"-H -L xy\""));
 925
 926       if(myname != NULL)
 927          folder = myname;
 928    }
 929
 930    /*
 931     * Likely to go, perform more setup
 932     */
 933
 934    _setup_vars();
 935
 936    if (options & OPT_INTERACTIVE) {
 937       _setscreensize(0);
 938 #ifdef SIGWINCH
 939 # ifndef TTY_WANTS_SIGWINCH
 940       if (safe_signal(SIGWINCH, SIG_IGN) != SIG_IGN)
 941 # endif
 942          safe_signal(SIGWINCH, &_setscreensize);
 943 #endif
 944    } else
 945       scrnheight = realscreenheight = 24, scrnwidth = 80;
 946
 947    /* Snapshot our string pools.  Memory is auto-reclaimed from now on */
 948    spreserve();
 949
 950    /* load() any resource files */
 951    if(resfiles & a_RF_ALL){
 952       /* *expand() returns a savestr(), but load only uses the file name for
 953        * fopen(), so it's safe to do this */
 954       if((resfiles & a_RF_SYSTEM) && !ok_blook(NAIL_NO_SYSTEM_RC))
 955          n_load(VAL_SYSCONFDIR "/" VAL_SYSCONFRC);
 956       if(resfiles & a_RF_USER)
 957          n_load(file_expand(ok_vlook(MAILRC)));
 958       if((cp = ok_vlook(NAIL_EXTRA_RC)) != NULL)
 959          n_load(file_expand(cp));
 960    }
 961
 962    /* Ensure the -S and other command line options take precedence over
 963     * anything that may have been placed in resource files.
 964     * Our "ternary binary" option *verbose* needs special treament */
 965    if ((options & (OPT_VERB | OPT_VERBVERB)) == OPT_VERB)
 966       options &= ~OPT_VERB;
 967    /* ..and be silent when unsetting an undefined variable */
 968    pstate |= PS_ROBOT;
 969    for (i = 0; UICMP(z, i, <, oargs_cnt); ++i) {
 970       char const *a[2];
 971
 972       a[0] = oargs[i];
 973       a[1] = NULL;
 974       c_set(a);
 975    }
 976    pstate &= ~PS_ROBOT;
 977
 978    /* Cause possible umask(2), now that any setting is established, and before
 979     * we change accounts, evaluate commands etc. */
 980    (void)ok_vlook(umask);
 981
 982    /* Additional options to pass-through to MTA, and allowed to do so? */
 983    if ((cp = ok_vlook(expandargv)) != NULL) {
 984       bool_t isfail = !asccasecmp(cp, "fail"),
 985          isrestrict = (!isfail && !asccasecmp(cp, "restrict"));
 986
 987       if ((options & OPT_D_V) && !isfail && !isrestrict && *cp != '\0')
 988          n_err(_("Unknown *expandargv* value: %s\n"), cp);
 989
 990       if ((cp = argv[i = _oind]) != NULL) {
 991          if (isfail ||
 992                (isrestrict && !(options & (OPT_INTERACTIVE |OPT_TILDE_FLAG)))) {
 993             n_err(_("*expandargv* doesn't allow MTA arguments; consider "
 994                "using *sendmail-arguments*\n"));
 995             exit_status = EXIT_USE | EXIT_SEND_ERROR;
 996             goto jleave;
 997          }
 998          do {
 999             assert(smopts_cnt + 1 <= smopts_size);
1000             smopts[smopts_cnt++] = cp;
1001          } while ((cp = argv[++i]) != NULL);
1002       }
1003    }
1004
1005    /* We had to wait until the resource files are loaded and any command line
1006     * setting has been restored, but get the termcap up and going before we
1007     * switch account or running commands */
1008 #ifdef n_HAVE_TCAP
1009    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
1010       n_termcap_init();
1011 #endif
1012
1013    /* Now we can set the account */
1014    if (Aarg != NULL) {
1015       char const *a[2];
1016       a[0] = Aarg;
1017       a[1] = NULL;
1018       c_account(a);
1019    }
1020
1021    /* "load()" commands given on command line */
1022    if(Xargs_cnt > 0)
1023       n_load_Xargs(Xargs, Xargs_cnt);
1024
1025    /* Final tests */
1026    if(options & OPT_Mm_FLAG){
1027       if(qf == (char*)-1){
1028          if(!mime_type_check_mtname(option_Mm_arg)){
1029             n_err(_("Could not find `mimetype' for -M argument: %s\n"),
1030                option_Mm_arg);
1031             exit_status = EXIT_ERR;
1032             goto jleave;
1033          }
1034       }else if((option_Mm_arg = mime_type_classify_filename(qf)) == NULL){
1035          n_err(_("Could not `mimetype'-classify -m argument: %s\n"),
1036             n_shexp_quote_cp(qf, FAL0));
1037          exit_status = EXIT_ERR;
1038          goto jleave;
1039       }else if(!asccasecmp(option_Mm_arg, "text/plain")) /* TODO no: magic!! */
1040          option_Mm_arg = NULL;
1041    }
1042
1043    /*
1044     * We're finally completely setup and ready to go
1045     */
1046    pstate |= PS_STARTED;
1047
1048    if (!(options & OPT_SENDMODE)) {
1049       exit_status = _rcv_mode(folder, Larg);
1050       goto jleave;
1051    }
1052
1053    /* Now that full mailx(1)-style file expansion is possible handle the
1054     * attachments which we had delayed due to this.
1055     * This may use savestr(), but since we won't enter the command loop we
1056     * don't need to care about that */
1057    for (cp = NULL; a_head != NULL;) {
1058       struct attachment *nahp, *nap;
1059
1060       if ((nahp = add_attachment(n_LEXINPUT_CTX_BASE, attach, a_head->aa_file,
1061             &nap)) != NULL) {
1062          attach = nahp;
1063          /* Did we split a charset set name for fixation purposes? */
1064          if (cp != NULL) {
1065             nap->a_conv = AC_FIX_INCS;
1066             nap->a_input_charset = cp;
1067             cp = NULL;
1068          }
1069          a_head = a_head->aa_next;
1070          continue;
1071       }
1072       i = errno;
1073
1074       /* It may not have worked because of an appended character set name, so
1075        * try to split name and charset and retry once */
1076       if (cp == NULL && (cp = strrchr(a_head->aa_file, '=')) != NULL) {
1077          char *ncp, *nfp = savestrbuf(a_head->aa_file,
1078                PTR2SIZE(cp - a_head->aa_file));
1079
1080          for (ncp = ++cp; *ncp != '\0'; ++ncp)
1081             if (!alnumchar(*ncp) && !punctchar(*ncp))
1082                break;
1083          if (*ncp == '\0') {
1084             a_head->aa_file = nfp;
1085             continue;
1086          }
1087       }
1088
1089       n_perr(a_head->aa_file, i);
1090       exit_status = EXIT_ERR;
1091       goto jleave;
1092    }
1093
1094    if (options & OPT_INTERACTIVE)
1095       n_tty_init();
1096    mail(to, cc, bcc, subject, attach, qf, ((options & OPT_F_FLAG) != 0));
1097    if (options & OPT_INTERACTIVE)
1098       n_tty_destroy();
1099
1100 jleave:
1101 #ifdef n_HAVE_TCAP
1102    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
1103       n_termcap_destroy();
1104 #endif
1105 #ifdef HAVE_MEMORY_DEBUG
1106    sreset(FAL0);
1107 #endif
1108 j_leave:
1109 #ifdef HAVE_MEMORY_DEBUG
1110    n_memcheck();
1111 #endif
1112    NYD_LEAVE;
1113    return exit_status;
1114 }
1115
1116 FL int
1117 c_exit(void *v){/* TODO program state machine */
1118    NYD_ENTER;
1119    UNUSED(v);
1120
1121    if(pstate & PS_STARTED){
1122       if(!(pstate & PS_SOURCING)){
1123 #ifdef n_HAVE_TCAP
1124          if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) ==
1125                OPT_INTERACTIVE)
1126             n_termcap_destroy();
1127 #endif
1128          exit(EXIT_OK);
1129       }
1130    }
1131    pstate |= PS_EXIT;
1132    NYD_LEAVE;
1133    return 0;
1134 }
1135
1136 /* Source the others in that case! */
1137 #ifdef HAVE_AMALGAMATION
1138 # include "config.h"
1139 #endif
1140
1141 /* s-it-mode */