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 char const n_error[sizeof n_ERROR] = N_(n_ERROR);
  68 VL char const n_empty[1] = "";
  69 VL ui16_t const      class_char[1 + 0x7F] = {
  70 #define a_BC C_BLANK | C_CNTRL
  71 #define a_SC C_SPACE | C_CNTRL
  72 #define a_WC C_WHITE | C_CNTRL
  73 /* 000 nul  001 soh  002 stx  003 etx  004 eot  005 enq  006 ack  007 bel */
  74    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  75 /* 010 bs   011 ht   012 nl   013 vt   014 np   015 cr   016 so   017 si */
  76    C_CNTRL, a_BC,    a_WC,    a_SC,    a_SC,    a_SC,    C_CNTRL, C_CNTRL,
  77 /* 020 dle  021 dc1  022 dc2  023 dc3  024 dc4  025 nak  026 syn  027 etb */
  78    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  79 /* 030 can  031 em   032 sub  033 esc  034 fs   035 gs   036 rs   037 us */
  80    C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL, C_CNTRL,
  81 #undef a_WC
  82 #undef a_SC
  83 #undef a_BC
  84 /* 040 sp   041  !   042  "   043  #   044  $   045  %   046  &   047  ' */
  85    C_BLANK, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  86 /* 050  (   051  )   052  *   053  +   054  ,    055  -   056  .   057  / */
  87    C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  88 /* 060  0   061  1   062  2   063  3   064  4   065  5   066  6   067  7 */
  89    C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL, C_OCTAL,
  90 /* 070  8   071  9   072  :   073  ;   074  <   075  =   076  >   077  ? */
  91    C_DIGIT, C_DIGIT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
  92 /* 100  @   101  A   102  B   103  C   104  D   105  E   106  F   107  G */
  93    C_PUNCT, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  94 /* 110  H   111  I   112  J   113  K   114  L   115  M   116  N   117  O */
  95    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  96 /* 120  P   121  Q   122  R   123  S   124  T   125  U   126  V   127  W */
  97    C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER, C_UPPER,
  98 /* 130  X   131  Y   132  Z   133  [   134  \   135  ]   136  ^   137  _ */
  99    C_UPPER, C_UPPER, C_UPPER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT,
 100 /* 140  `   141  a   142  b   143  c   144  d   145  e   146  f   147  g */
 101    C_PUNCT, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 102 /* 150  h   151  i   152  j   153  k   154  l   155  m   156  n   157  o */
 103    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 104 /* 160  p   161  q   162  r   163  s   164  t   165  u   166  v   167  w */
 105    C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER, C_LOWER,
 106 /* 170  x   171  y   172  z   173  {   174  |   175  }   176  ~   177 del */
 107    C_LOWER, C_LOWER, C_LOWER, C_PUNCT, C_PUNCT, C_PUNCT, C_PUNCT, C_CNTRL
 108 };
 109
 110 /* Our own little getopt(3) */
 111 static char          *_oarg;
 112 static int           _oind, /*_oerr,*/ _oopt;
 113
 114 /* Our own little getopt(3); note --help is special-treated as 'h' */
 115 static int     _getopt(int argc, char * const argv[], char const *optstring);
 116
 117 /* Perform basic startup initialization */
 118 static void    _startup(void);
 119
 120 /* Grow a char** */
 121 static size_t  _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt);
 122
 123 /* Setup some variables which we require to be valid / verified */
 124 static void    _setup_vars(void);
 125
 126 /* We're in an interactive session - compute what the screen size for printing
 127  * headers etc. should be; notify tty upon resize if *is_sighdl* is not 0.
 128  * We use the following algorithm for the height:
 129  * If baud rate < 1200, use  9
 130  * If baud rate = 1200, use 14
 131  * If baud rate > 1200, use 24 or ws_row
 132  * Width is either 80 or ws_col */
 133 static void    _setscreensize(int is_sighdl);
 134
 135 /* Ok, we are reading mail.  Decide whether we are editing a mailbox or reading
 136  * the system mailbox, and open up the right stuff */
 137 static int     _rcv_mode(char const *folder, char const *Larg);
 138
 139 /* Interrupt printing of the headers */
 140 static void    _hdrstop(int signo);
 141
 142 static int
 143 _getopt(int argc, char * const argv[], char const *optstring)
 144 {
 145    static char const *lastp;
 146
 147    int rv = -1/*, colon*/;
 148    char const *curp;
 149    NYD_ENTER;
 150
 151    _oarg = NULL;
 152
 153    /*if ((colon = (optstring[0] == ':')))
 154       ++optstring;*/
 155
 156    if (lastp != NULL) {
 157       curp = lastp;
 158       lastp = NULL;
 159    } else {
 160       if (_oind >= argc || argv[_oind] == NULL || argv[_oind][0] != '-' ||
 161             argv[_oind][1] == '\0')
 162          goto jleave;
 163       if (argv[_oind][1] == '-' && argv[_oind][2] == '\0') {
 164          /* We need this in for MTA arg detection (easier) ++_oind;*/
 165          goto jleave;
 166       }
 167       curp = &argv[_oind][1];
 168    }
 169
 170    for(_oopt = curp[0]; optstring[0] != '\0';){
 171       if(optstring[0] != _oopt){
 172          optstring += 1 + (optstring[1] == ':');
 173          continue;
 174       }
 175
 176       if (optstring[1] == ':') {
 177          if (curp[1] != '\0') {
 178             _oarg = n_UNCONST(curp + 1);
 179             ++_oind;
 180          } else {
 181             if ((_oind += 2) > argc) {
 182                /*if (!colon *//*&& _oerr*//*)*/ {
 183                   n_err(_("%s: option requires an argument -- %c\n"),
 184                      argv[0], (char)_oopt);
 185                }
 186                rv = (/*colon ? ':' :*/ '?');
 187                goto jleave;
 188             }
 189             _oarg = argv[_oind - 1];
 190          }
 191       } else {
 192          if (curp[1] != '\0')
 193             lastp = curp + 1;
 194          else
 195             ++_oind;
 196       }
 197       rv = _oopt;
 198       goto jleave;
 199    }
 200
 201    /* Special support for --help, which is quite common */
 202    if (_oopt == '-' && !strcmp(curp, "-help") && curp - 1 == argv[_oind]) {
 203       ++_oind;
 204       rv = 'h';
 205       goto jleave;
 206    }
 207
 208    /* Definitive error */
 209    /*if (!colon *//*&& opterr*//*)*/
 210       n_err(_("%s: invalid option -- %c\n"), argv[0], _oopt);
 211    if (curp[1] != '\0')
 212       lastp = curp + 1;
 213    else
 214       ++_oind;
 215    _oarg = NULL;
 216    rv = '?';
 217 jleave:
 218    NYD_LEAVE;
 219    return rv;
 220 }
 221
 222 static void
 223 _startup(void)
 224 {
 225    char *cp;
 226    NYD_ENTER;
 227
 228    image = -1;
 229    dflpipe = SIG_DFL;
 230    _oind = /*_oerr =*/ 1;
 231
 232    if ((cp = strrchr(progname, '/')) != NULL)
 233       progname = ++cp;
 234
 235    /* Set up a reasonable environment */
 236
 237 #ifdef HAVE_NYD
 238    safe_signal(SIGABRT, &_nyd_oncrash);
 239 # ifdef SIGBUS
 240    safe_signal(SIGBUS, &_nyd_oncrash);
 241 # endif
 242    safe_signal(SIGFPE, &_nyd_oncrash);
 243    safe_signal(SIGILL, &_nyd_oncrash);
 244    safe_signal(SIGSEGV, &_nyd_oncrash);
 245 #endif
 246    command_manager_start();
 247
 248    if (isatty(STDIN_FILENO)) /* TODO should be isatty(0) && isatty(2)?? */
 249       options |= OPT_TTYIN;
 250    if (isatty(STDOUT_FILENO))
 251       options |= OPT_TTYOUT;
 252    if ((options & (OPT_TTYIN | OPT_TTYOUT)) == (OPT_TTYIN | OPT_TTYOUT)) {
 253       options |= OPT_INTERACTIVE;
 254       safe_signal(SIGPIPE, dflpipe = SIG_IGN);
 255    }
 256
 257    /*  --  >8  --  8<  --  */
 258
 259 #ifndef HAVE_SETLOCALE
 260    mb_cur_max = 1;
 261 #else
 262    setlocale(LC_ALL, n_empty);
 263    mb_cur_max = MB_CUR_MAX;
 264 # ifdef HAVE_NL_LANGINFO
 265    if(ok_vlook(ttycharset) == NULL && (cp = nl_langinfo(CODESET)) != NULL)
 266       ok_vset(ttycharset, cp);
 267 # endif
 268
 269 # ifdef HAVE_C90AMEND1
 270    if(mb_cur_max > 1){
 271 #  ifdef HAVE_ALWAYS_UNICODE_LOCALE
 272       options |= OPT_UNICODE;
 273 #  else
 274       wchar_t wc;
 275       if(mbtowc(&wc, "\303\266", 2) == 2 && wc == 0xF6 &&
 276             mbtowc(&wc, "\342\202\254", 3) == 3 && wc == 0x20AC)
 277          options |= OPT_UNICODE;
 278       /* Reset possibly messed up state; luckily this also gives us an
 279        * indication whether the encoding has locking shift state sequences */
 280       if(mbtowc(&wc, NULL, mb_cur_max))
 281          options |= OPT_ENC_MBSTATE;
 282 #  endif
 283    }
 284 # endif
 285 #endif
 286
 287 #ifdef HAVE_ICONV
 288    iconvd = (iconv_t)-1;
 289 #endif
 290    NYD_LEAVE;
 291 }
 292
 293 static size_t
 294 _grow_cpp(char const ***cpp, size_t newsize, size_t oldcnt)
 295 {
 296    /* Just use auto-reclaimed storage, it will be preserved */
 297    char const **newcpp;
 298    NYD_ENTER;
 299
 300    newcpp = salloc(sizeof(char*) * newsize);
 301
 302    if (oldcnt > 0)
 303       memcpy(newcpp, *cpp, oldcnt * sizeof(char*));
 304    *cpp = newcpp;
 305    NYD_LEAVE;
 306    return newsize;
 307 }
 308
 309 static void
 310 _setup_vars(void){
 311    /* XXX furtherly check paths? */
 312    struct passwd *pwuid;
 313    char const *cp;
 314    NYD_ENTER;
 315
 316    group_id = getgid();
 317    if((pwuid = getpwuid(user_id = getuid())) == NULL)
 318       n_panic(_("Cannot associate a name with uid %lu"), (ul_i)user_id);
 319    myname = savestr(pwuid->pw_name); /* XXX replace uses with vlook(LOGNAME)! */
 320
 321    /* C99 */{
 322       char const *ep;
 323       bool_t doenv;
 324
 325       if(!(doenv = (ep = ok_vlook(LOGNAME)) == NULL) &&
 326             (doenv = strcmp(myname, ep)))
 327          n_err(_("Warning: $LOGNAME (%s) not identical to user (%s)!\n"),
 328             ep, myname);
 329       if(doenv){
 330          pstate |= PS_ROOT;
 331          ok_vset(LOGNAME, myname);
 332          pstate &= ~PS_ROOT;
 333       }
 334
 335       if((ep = ok_vlook(USER)) != NULL && strcmp(myname, ep)){
 336          n_err(_("Warning: $USER (%s) not identical to user (%s)!\n"),
 337             ep, myname);
 338          pstate |= PS_ROOT;
 339          ok_vset(USER, myname);
 340          pstate &= ~PS_ROOT;
 341       }
 342    }
 343
 344    /* XXX myfullname = pw->pw_gecos[OPTIONAL!] -> GUT THAT; TODO pw_shell */
 345
 346    /* */
 347    if((cp = ok_vlook(HOME)) == NULL){
 348       cp = pwuid->pw_dir;
 349       pstate |= PS_ROOT;
 350       ok_vset(HOME, cp);
 351       pstate &= ~PS_ROOT;
 352    }
 353
 354    (void)ok_vlook(TMPDIR);
 355    NYD_LEAVE;
 356 }
 357
 358 static void
 359 _setscreensize(int is_sighdl) /* TODO global policy; int wraps; minvals! */
 360 {
 361    struct termios tbuf;
 362 #ifdef TIOCGWINSZ
 363    struct winsize ws;
 364 #elif defined TIOCGSIZE
 365    struct ttysize ts;
 366 #endif
 367    NYD_ENTER;
 368
 369    scrnheight = realscreenheight = scrnwidth = 0;
 370
 371    /* (Also) POSIX: LINES and COLUMNS always override.  Adjust this
 372     * a little bit to be able to honour resizes during our lifetime and
 373     * only honour it upon first run; abuse *is_sighdl* as an indicator */
 374    if (!is_sighdl) {
 375       char *cp;
 376
 377       /* We manage those variables for our child processes, so ensure they
 378        * are up to date, always */
 379       if (options & OPT_INTERACTIVE)
 380          pstate |= PS_SIGWINCH_PEND;
 381
 382       if ((cp = ok_vlook(LINES)) != NULL)
 383          scrnheight = realscreenheight = (int)strtoul(cp, NULL, 0); /* TODO */
 384       if ((cp = ok_vlook(COLUMNS)) != NULL)
 385          scrnwidth = (int)strtoul(cp, NULL, 0); /* TODO posui32= not posnum=! */
 386
 387       if (scrnwidth != 0 && scrnheight != 0)
 388          goto jleave;
 389    }
 390
 391 #ifdef TIOCGWINSZ
 392    if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1)
 393       ws.ws_col = ws.ws_row = 0;
 394 #elif defined TIOCGSIZE
 395    if (ioctl(STDOUT_FILENO, TIOCGSIZE, &ws) == -1)
 396       ts.ts_lines = ts.ts_cols = 0;
 397 #endif
 398
 399    if (scrnheight == 0) {
 400       speed_t ospeed = ((tcgetattr(STDOUT_FILENO, &tbuf) == -1)
 401             ? B9600 : cfgetospeed(&tbuf));
 402
 403       if (ospeed < B1200)
 404          scrnheight = 9;
 405       else if (ospeed == B1200)
 406          scrnheight = 14;
 407 #ifdef TIOCGWINSZ
 408       else if (ws.ws_row != 0)
 409          scrnheight = ws.ws_row;
 410 #elif defined TIOCGSIZE
 411       else if (ts.ts_lines != 0)
 412          scrnheight = ts.ts_lines;
 413 #endif
 414       else
 415          scrnheight = 24;
 416
 417 #if defined TIOCGWINSZ || defined TIOCGSIZE
 418       if (0 ==
 419 # ifdef TIOCGWINSZ
 420             (realscreenheight = ws.ws_row)
 421 # else
 422             (realscreenheight = ts.ts_lines)
 423 # endif
 424       )
 425          realscreenheight = 24;
 426 #endif
 427    }
 428
 429    if (scrnwidth == 0 && 0 ==
 430 #ifdef TIOCGWINSZ
 431          (scrnwidth = ws.ws_col)
 432 #elif defined TIOCGSIZE
 433          (scrnwidth = ts.ts_cols)
 434 #endif
 435    )
 436       scrnwidth = 80;
 437
 438 jleave:
 439 #ifdef SIGWINCH
 440    if (is_sighdl) {
 441       pstate |= PS_SIGWINCH_PEND; /* XXX Not atomic */
 442       if (options & OPT_INTERACTIVE)
 443          n_tty_signal(SIGWINCH);
 444    }
 445 #endif
 446    NYD_LEAVE;
 447 }
 448
 449 static sigjmp_buf __hdrjmp; /* XXX */
 450
 451 static int
 452 _rcv_mode(char const *folder, char const *Larg)
 453 {
 454    int i;
 455    sighandler_type prevint;
 456    NYD_ENTER;
 457
 458    if (folder == NULL)
 459       folder = "%";
 460
 461    if (options & OPT_QUICKRUN_MASK)
 462       i = FEDIT_RDONLY;
 463    else
 464       i = FEDIT_NONE;
 465    i = setfile(folder, i);
 466    if (i < 0) {
 467       exit_status = EXIT_ERR; /* error already reported */
 468       goto jquit;
 469    }
 470    if (options & OPT_QUICKRUN_MASK) {
 471       exit_status = i;
 472       if (i == EXIT_OK && (!(options & OPT_EXISTONLY) ||
 473             (options & OPT_HEADERLIST)))
 474          print_header_summary(Larg);
 475       goto jquit;
 476    }
 477    check_folder_hook(FAL0);
 478
 479    if (i > 0 && !ok_blook(emptystart)) {
 480       exit_status = EXIT_ERR;
 481       goto jleave;
 482    }
 483
 484    if (sigsetjmp(__hdrjmp, 1) == 0) {
 485       if ((prevint = safe_signal(SIGINT, SIG_IGN)) != SIG_IGN)
 486          safe_signal(SIGINT, _hdrstop);
 487       if (!(options & OPT_N_FLAG)) {
 488          if (!ok_blook(quiet))
 489             printf(_("%s version %s.  Type `?' for help\n"),
 490                (ok_blook(bsdcompat) ? "Mail" : uagent), ok_vlook(version));
 491          announce(1);
 492          fflush(stdout);
 493       }
 494       safe_signal(SIGINT, prevint);
 495    }
 496
 497    /* Enter the command loop */
 498    if (options & OPT_INTERACTIVE)
 499       n_tty_init();
 500    n_commands();
 501    if (options & OPT_INTERACTIVE)
 502       n_tty_destroy();
 503
 504    if (mb.mb_type == MB_FILE || mb.mb_type == MB_MAILDIR) {
 505       safe_signal(SIGHUP, SIG_IGN);
 506       safe_signal(SIGINT, SIG_IGN);
 507       safe_signal(SIGQUIT, SIG_IGN);
 508    }
 509 jquit:
 510    save_mbox_for_possible_quitstuff();
 511    quit();
 512 jleave:
 513    NYD_LEAVE;
 514    return exit_status;
 515 }
 516
 517 static void
 518 _hdrstop(int signo)
 519 {
 520    NYD_X; /* Signal handler */
 521    n_UNUSED(signo);
 522
 523    fflush(stdout);
 524    n_err_sighdl(_("\nInterrupt\n"));
 525    siglongjmp(__hdrjmp, 1);
 526 }
 527
 528 int
 529 main(int argc, char *argv[]){
 530    /* Keep in SYNC: ./nail.1:"SYNOPSIS, main() */
 531    static char const
 532       optstr[] = "A:a:Bb:c:dEeFfHhiL:M:m:NnO:q:Rr:S:s:tu:VvX:::~#.",
 533       usagestr[] = N_(
 534          "Synopsis:\n"
 535          "  %s -h\n"
 536
 537          "  %s [-BdEFintv~] [-: spec] [-A account]\n"
 538          "\t [-a attachment] [-b bcc-addr] [-c cc-addr]\n"
 539          "\t [-M type | -m file | -q file | -t]\n"
 540          "\t [-r from-addr] [-S var[=value]..]\n"
 541          "\t [-s subject] [-X cmd] [-.] to-addr.. [-- mta-option..]\n"
 542
 543          "  %s [-BdEeHiNnRv~] [-: spec] [-A account]\n"
 544          "\t [-L spec-list] [-r from-addr] [-S var[=value]..]\n"
 545          "\t [-u user] [-X cmd] [-- mta-option..]\n"
 546
 547          "  %s [-BdEeHiNnRv~#] [-: spec] [-A account] -f\n"
 548          "\t [-L spec-list] [-r from-addr] [-S var[=value]..]\n"
 549          "\t [-X cmd] [file] [-- mta-option..]\n"
 550       );
 551 #define _USAGE_ARGS , progname, progname, progname, progname
 552
 553    struct a_arg *a_head, *a_curr;
 554    struct name *to, *cc, *bcc;
 555    struct attachment *attach;
 556    char *cp, *subject, *qf, *Aarg, *Larg;
 557    char const *okey, **oargs, **Xargs, *folder, *emsg;
 558    size_t oargs_size, oargs_cnt, Xargs_size, Xargs_cnt, smopts_size;
 559    enum{
 560       a_RF_NONE = 0,
 561       a_RF_SET = 1<<0,
 562       a_RF_SYSTEM = 1<<1,
 563       a_RF_USER = 1<<2,
 564       a_RF_ALL = a_RF_SYSTEM | a_RF_USER
 565    } resfiles;
 566    int i;
 567    NYD_ENTER;
 568
 569    a_head = NULL;
 570    n_UNINIT(a_curr, NULL);
 571    to = cc = bcc = NULL;
 572    attach = NULL;
 573    cp = subject = qf =
 574          Aarg = Larg = NULL;
 575    oargs = Xargs = NULL;
 576    folder = emsg = NULL;
 577    oargs_size = oargs_cnt = Xargs_size = Xargs_cnt = smopts_size = 0;
 578    resfiles = a_RF_ALL;
 579
 580    /*
 581     * Start our lengthy setup, finalize by setting PS_STARTED
 582     */
 583
 584    progname = argv[0];
 585    _startup();
 586
 587    /* Command line parsing
 588     * Variable settings need to be done twice, since the user surely wants the
 589     * setting to take effect immediately, but also doesn't want it to be
 590     * overwritten from within resource files */
 591    while ((i = _getopt(argc, argv, optstr)) >= 0) {
 592       switch (i) {
 593       case 'A':
 594          /* Execute an account command later on */
 595          Aarg = _oarg;
 596          break;
 597       case 'a':
 598          options |= OPT_SENDMODE;
 599          {  struct a_arg *nap = salloc(sizeof(struct a_arg));
 600             if (a_head == NULL)
 601                a_head = nap;
 602             else
 603                a_curr->aa_next = nap;
 604             nap->aa_next = NULL;
 605             nap->aa_file = _oarg;
 606             a_curr = nap;
 607          }
 608          break;
 609       case 'B':
 610          /* Make 0/1 line buffered */
 611          setvbuf(stdin, NULL, _IOLBF, 0);
 612          setvbuf(stdout, NULL, _IOLBF, 0);
 613          break;
 614       case 'b':
 615          /* Get Blind Carbon Copy Recipient list */
 616          options |= OPT_SENDMODE;
 617          bcc = cat(bcc, lextract(_oarg, GBCC | GFULL));
 618          break;
 619       case 'c':
 620          /* Get Carbon Copy Recipient list */
 621          options |= OPT_SENDMODE;
 622          cc = cat(cc, lextract(_oarg, GCC | GFULL));
 623          break;
 624       case 'd':
 625          ok_bset(debug);
 626          okey = "debug";
 627          goto joarg;
 628       case 'E':
 629          ok_bset(skipemptybody);
 630          okey = "skipemptybody";
 631          goto joarg;
 632       case 'e':
 633          options |= OPT_EXISTONLY;
 634          break;
 635       case 'F':
 636          options |= OPT_F_FLAG | OPT_SENDMODE;
 637          break;
 638       case 'f':
 639          /* User is specifying file to "edit" with Mail, as opposed to reading
 640           * system mailbox.  If no argument is given, we read his mbox file.
 641           * Check for remaining arguments later */
 642          folder = "&";
 643          break;
 644       case 'H':
 645          options |= OPT_HEADERSONLY;
 646          break;
 647       case 'h':
 648          n_err(V_(usagestr) _USAGE_ARGS);
 649          goto j_leave;
 650       case 'i':
 651          /* Ignore interrupts */
 652          ok_bset(ignore);
 653          okey = "ignore";
 654          goto joarg;
 655       case 'L':
 656          Larg = _oarg;
 657          options |= OPT_HEADERLIST;
 658          if (*Larg == '"' || *Larg == '\'') { /* TODO list.c:listspec_check() */
 659             size_t j = strlen(++Larg);
 660             if (j > 0)
 661                Larg[j - 1] = '\0';
 662          }
 663          break;
 664       case 'M':
 665          if(qf != NULL && (!(options & OPT_Mm_FLAG) || qf != (char*)-1))
 666             goto jeMmq;
 667          option_Mm_arg = _oarg;
 668          qf = (char*)-1;
 669          if(0){
 670             /* FALLTHRU*/
 671       case 'm':
 672             if(qf != NULL && (!(options & OPT_Mm_FLAG) || qf == (char*)-1))
 673                goto jeMmq;
 674             qf = _oarg;
 675          }
 676          options |= OPT_SENDMODE | OPT_Mm_FLAG;
 677          break;
 678       case 'N':
 679          /* Avoid initial header printing */
 680          ok_bclear(header);
 681          okey = "noheader";
 682          goto joarg;
 683       case 'n':
 684          /* Don't source "unspecified system start-up file" */
 685          if(resfiles & a_RF_SET){
 686             emsg = N_("-n cannot be used in conjunction with -:");
 687             goto jusage;
 688          }
 689          resfiles = a_RF_USER;
 690          break;
 691       case 'O':
 692          /* Additional options to pass-through to MTA TODO v15-compat legacy */
 693          if (smopts_cnt == smopts_size)
 694             smopts_size = _grow_cpp(&smopts, smopts_size + 8, smopts_cnt);
 695          smopts[smopts_cnt++] = _oarg;
 696          break;
 697       case 'q':
 698          if (qf != NULL && (options & OPT_Mm_FLAG)) {
 699 jeMmq:
 700             emsg = N_("Only one of -M, -m or -q may be given");
 701             goto jusage;
 702          }
 703          /* Quote file TODO drop? -Q with real quote?? what ? */
 704          options |= OPT_SENDMODE;
 705          /* Allow for now, we have to special check validity of -q- later on! */
 706          qf = (_oarg[0] == '-' && _oarg[1] == '\0') ? (char*)-1 : _oarg;
 707          break;
 708       case 'R':
 709          /* Open folders read-only */
 710          options |= OPT_R_FLAG;
 711          break;
 712       case 'r':
 713          /* Set From address. */
 714          options |= OPT_r_FLAG;
 715          if (_oarg[0] != '\0') {
 716             struct name *fa = nalloc(_oarg, GSKIN | GFULL | GFULLEXTRA);
 717
 718             if (is_addr_invalid(fa, EACM_STRICT | EACM_NOLOG)) {
 719                emsg = N_("Invalid address argument with -r");
 720                goto jusage;
 721             }
 722             option_r_arg = fa;
 723             /* TODO -r options is set in smopts, but may
 724              * TODO be overwritten by setting from= in
 725              * TODO an interactive session!
 726              * TODO Maybe disable setting of from?
 727              * TODO Warn user?  Update manual!! */
 728             okey = savecat("from=", fa->n_fullname);
 729             goto joarg;
 730          }
 731          break;
 732       case 'S':
 733          /* Set variable (TODO twice [only if successful]) */
 734          {  char *a[2];
 735             bool_t b;
 736
 737             okey = a[0] = _oarg;
 738             a[1] = NULL;
 739             pstate |= PS_ROBOT;
 740             b = (c_set(a) == 0);
 741             pstate &= ~PS_ROBOT;
 742             if(!b)
 743                break;
 744          }
 745 joarg:
 746          if (oargs_cnt == oargs_size)
 747             oargs_size = _grow_cpp(&oargs, oargs_size + 8, oargs_cnt);
 748          oargs[oargs_cnt++] = okey;
 749          break;
 750       case 's':
 751          /* Subject: */
 752          subject = _oarg;
 753          options |= OPT_SENDMODE;
 754          break;
 755       case 't':
 756          /* Read defined set of headers from mail to be sent */
 757          options |= OPT_SENDMODE | OPT_t_FLAG;
 758          break;
 759       case 'u':
 760          /* Temporarily set myname so that we can recognize the -u condition */
 761          myname = savecat("%", _oarg);
 762          break;
 763       case 'V':
 764          printf(_("%s version %s\n"), uagent, ok_vlook(version));
 765          exit_status = EXIT_OK;
 766          goto j_leave;
 767       case 'v':
 768          /* Be verbose */
 769          ok_bset(verbose);
 770          okey = "verbose";
 771          goto joarg;
 772       case 'X':
 773          /* Add to list of commands to exec before entering normal operation */
 774          if (Xargs_cnt == Xargs_size)
 775             Xargs_size = _grow_cpp(&Xargs, Xargs_size + 8, Xargs_cnt);
 776          Xargs[Xargs_cnt++] = _oarg;
 777          break;
 778       case ':':
 779          /* Control which resource files shall be loaded */
 780          if(!(resfiles & (a_RF_SET | a_RF_SYSTEM))){
 781             emsg = N_("-n cannot be used in conjunction with -:");
 782             goto jusage;
 783          }
 784          resfiles = a_RF_SET;
 785          while((i = *_oarg++) != '\0')
 786             switch(i){
 787             case 'S': case 's': resfiles |= a_RF_SYSTEM; break;
 788             case 'U': case 'u': resfiles |= a_RF_USER; break;
 789             case ':': case '/': resfiles &= ~a_RF_ALL; break;
 790             default:
 791                emsg = N_("Invalid argument of -:");
 792                goto jusage;
 793             }
 794          break;
 795       case '~':
 796          /* Enable tilde escapes even in non-interactive mode */
 797          options |= OPT_TILDE_FLAG;
 798          break;
 799       case '#':
 800          /* Work in batch mode, even if non-interactive */
 801          options |= OPT_TILDE_FLAG | OPT_BATCH_FLAG;
 802          if (oargs_cnt + 8 >= oargs_size)
 803             oargs_size = _grow_cpp(&oargs, oargs_size + 9, oargs_cnt);
 804          folder = "/dev/null";
 805          ok_vset(MAIL, folder);
 806          ok_vset(MBOX, folder);
 807          ok_bset(emptystart);
 808          ok_bclear(header);
 809          ok_vset(inbox, folder);
 810          ok_bset(quiet);
 811          ok_bset(sendwait);
 812          ok_bset(typescript_mode);
 813          oargs[oargs_cnt + 0] = "MAIL=/dev/null";
 814          oargs[oargs_cnt + 1] = "MBOX=/dev/null";
 815          oargs[oargs_cnt + 2] = "emptystart";
 816          oargs[oargs_cnt + 3] = "noheader";
 817          oargs[oargs_cnt + 4] = "inbox=/dev/null";
 818          oargs[oargs_cnt + 5] = "quiet";
 819          oargs[oargs_cnt + 6] = "sendwait";
 820          oargs[oargs_cnt + 7] = "typescript-mode";
 821          oargs_cnt += 8;
 822          break;
 823       case '.':
 824          options |= OPT_SENDMODE;
 825          goto jgetopt_done;
 826       case '?':
 827 jusage:
 828          if (emsg != NULL)
 829             n_err("%s\n", V_(emsg));
 830          n_err(V_(usagestr) _USAGE_ARGS);
 831 #undef _USAGE_ARGS
 832          exit_status = EXIT_USE;
 833          goto j_leave;
 834       }
 835    }
 836 jgetopt_done:
 837    ;
 838
 839    /* The normal arguments may be followed by MTA arguments after a "--";
 840     * however, -f may take off an argument, too, and before that.
 841     * Since MTA arguments after "--" require *expandargv*, delay parsing off
 842     * those options until after the resource files are loaded... */
 843    if ((cp = argv[i = _oind]) == NULL)
 844       ;
 845    else if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0')
 846       ++i;
 847    /* OPT_BATCH_FLAG sets to /dev/null, but -f can still be used and sets & */
 848    else if (folder != NULL && /*folder[0] == '&' &&*/ folder[1] == '\0') {
 849       folder = cp;
 850       if ((cp = argv[++i]) != NULL) {
 851          if (cp[0] != '-' || cp[1] != '-' || cp[2] != '\0') {
 852             emsg = N_("More than one file given with -f");
 853             goto jusage;
 854          }
 855          ++i;
 856       }
 857    } else {
 858       options |= OPT_SENDMODE;
 859       for (;;) {
 860          to = cat(to, lextract(cp, GTO | GFULL));
 861          if ((cp = argv[++i]) == NULL)
 862             break;
 863          if (cp[0] == '-' && cp[1] == '-' && cp[2] == '\0') {
 864             ++i;
 865             break;
 866          }
 867       }
 868    }
 869    _oind = i;
 870
 871    /* ...BUT, since we use salloc() for the MTA smopts storage we need to
 872     * allocate the necessary space for them before we fixate that storage! */
 873    while (argv[i] != NULL)
 874       ++i;
 875    if (smopts_cnt + i > smopts_size)
 876       DBG(smopts_size =) _grow_cpp(&smopts, smopts_cnt + i + 1, smopts_cnt);
 877
 878    /* Check for inconsistent arguments, fix some temporaries */
 879    if (options & OPT_SENDMODE) {
 880       /* XXX This is only because BATCH_FLAG sets *folder*=/dev/null
 881        * XXX in order to function.  Ideally that would not be needed */
 882       if (folder != NULL && !(options & OPT_BATCH_FLAG)) {
 883          emsg = N_("Cannot give -f and people to send to.");
 884          goto jusage;
 885       }
 886       if (myname != NULL) {
 887          emsg = N_("The -u option cannot be used in send mode");
 888          goto jusage;
 889       }
 890       if (!(options & OPT_t_FLAG) && to == NULL) {
 891          emsg = N_("Send options without primary recipient specified.");
 892          goto jusage;
 893       }
 894       if ((options & OPT_t_FLAG) && qf != NULL) {
 895          emsg = N_("The -M, -m, -q and -t options are mutual exclusive.");
 896          goto jusage;
 897       }
 898       if (options & (OPT_EXISTONLY | OPT_HEADERSONLY | OPT_HEADERLIST)) {
 899          emsg = N_("The -e, -H and -L options cannot be used in send mode.");
 900          goto jusage;
 901       }
 902       if (options & OPT_R_FLAG) {
 903          emsg = N_("The -R option is meaningless in send mode.");
 904          goto jusage;
 905       }
 906
 907       if (options & OPT_INTERACTIVE) {
 908          if (qf == (char*)-1) {
 909             if (!(options & OPT_Mm_FLAG))
 910                emsg = N_("-q can't use standard input when interactive.\n");
 911             goto jusage;
 912          }
 913       }
 914    } else {
 915       if (myname != NULL && folder != NULL) {
 916          emsg = N_("The options -u and -f (and -#) are mutually exclusive");
 917          goto jusage;
 918       }
 919       if ((options & (OPT_EXISTONLY | OPT_HEADERSONLY)) ==
 920             (OPT_EXISTONLY | OPT_HEADERSONLY)) {
 921          emsg = N_("The options -e and -H are mutual exclusive");
 922          goto jusage;
 923       }
 924       if ((options & (OPT_HEADERSONLY | OPT_HEADERLIST)) == /* TODO OBSOLETE */
 925             (OPT_HEADERSONLY | OPT_HEADERLIST))
 926          OBSOLETE(_("please use \"-e -L xy\" instead of \"-H -L xy\""));
 927
 928       if(myname != NULL)
 929          folder = myname;
 930    }
 931
 932    /*
 933     * Likely to go, perform more setup
 934     */
 935
 936    _setup_vars();
 937
 938    if (options & OPT_INTERACTIVE) {
 939       _setscreensize(0);
 940 #ifdef SIGWINCH
 941 # ifndef TTY_WANTS_SIGWINCH
 942       if (safe_signal(SIGWINCH, SIG_IGN) != SIG_IGN)
 943 # endif
 944          safe_signal(SIGWINCH, &_setscreensize);
 945 #endif
 946    } else
 947       scrnheight = realscreenheight = 24, scrnwidth = 80;
 948
 949    /* Fixate the current snapshot of our global auto-reclaimed storage instance.
 950     * Memory is auto-reclaimed from now on */
 951    n_memory_autorec_fixate();
 952
 953    /* load() any resource files */
 954    if(resfiles & a_RF_ALL){
 955       /* *expand() returns a savestr(), but load only uses the file name for
 956        * fopen(), so it's safe to do this */
 957       if((resfiles & a_RF_SYSTEM) && !ok_blook(NAIL_NO_SYSTEM_RC))
 958          n_load(VAL_SYSCONFDIR "/" VAL_SYSCONFRC);
 959       if(resfiles & a_RF_USER)
 960          n_load(file_expand(ok_vlook(MAILRC)));
 961       if((cp = ok_vlook(NAIL_EXTRA_RC)) != NULL)
 962          n_load(file_expand(cp));
 963    }
 964
 965    /* Ensure the -S and other command line options take precedence over
 966     * anything that may have been placed in resource files.
 967     * Our "ternary binary" option *verbose* needs special treament */
 968    if ((options & (OPT_VERB | OPT_VERBVERB)) == OPT_VERB)
 969       options &= ~OPT_VERB;
 970    /* ..and be silent when unsetting an undefined variable */
 971    pstate |= PS_ROBOT;
 972    for (i = 0; UICMP(z, i, <, oargs_cnt); ++i) {
 973       char const *a[2];
 974
 975       a[0] = oargs[i];
 976       a[1] = NULL;
 977       c_set(a);
 978    }
 979    pstate &= ~PS_ROBOT;
 980
 981    /* Cause possible umask(2), now that any setting is established, and before
 982     * we change accounts, evaluate commands etc. */
 983    (void)ok_vlook(umask);
 984
 985    /* Additional options to pass-through to MTA, and allowed to do so? */
 986    if ((cp = ok_vlook(expandargv)) != NULL) {
 987       bool_t isfail = !asccasecmp(cp, "fail"),
 988          isrestrict = (!isfail && !asccasecmp(cp, "restrict"));
 989
 990       if ((options & OPT_D_V) && !isfail && !isrestrict && *cp != '\0')
 991          n_err(_("Unknown *expandargv* value: %s\n"), cp);
 992
 993       if ((cp = argv[i = _oind]) != NULL) {
 994          if (isfail ||
 995                (isrestrict && !(options & (OPT_INTERACTIVE |OPT_TILDE_FLAG)))) {
 996             n_err(_("*expandargv* doesn't allow MTA arguments; consider "
 997                "using *sendmail-arguments*\n"));
 998             exit_status = EXIT_USE | EXIT_SEND_ERROR;
 999             goto jleave;
1000          }
1001          do {
1002             assert(smopts_cnt + 1 <= smopts_size);
1003             smopts[smopts_cnt++] = cp;
1004          } while ((cp = argv[++i]) != NULL);
1005       }
1006    }
1007
1008    /* We had to wait until the resource files are loaded and any command line
1009     * setting has been restored, but get the termcap up and going before we
1010     * switch account or running commands */
1011 #ifdef n_HAVE_TCAP
1012    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
1013       n_termcap_init();
1014 #endif
1015
1016    /* Now we can set the account */
1017    if (Aarg != NULL) {
1018       char const *a[2];
1019       a[0] = Aarg;
1020       a[1] = NULL;
1021       c_account(a);
1022    }
1023
1024    /* "load()" commands given on command line */
1025    if(Xargs_cnt > 0)
1026       n_load_Xargs(Xargs, Xargs_cnt);
1027
1028    /* Final tests */
1029    if(options & OPT_Mm_FLAG){
1030       if(qf == (char*)-1){
1031          if(!mime_type_check_mtname(option_Mm_arg)){
1032             n_err(_("Could not find `mimetype' for -M argument: %s\n"),
1033                option_Mm_arg);
1034             exit_status = EXIT_ERR;
1035             goto jleave;
1036          }
1037       }else if((option_Mm_arg = mime_type_classify_filename(qf)) == NULL){
1038          n_err(_("Could not `mimetype'-classify -m argument: %s\n"),
1039             n_shexp_quote_cp(qf, FAL0));
1040          exit_status = EXIT_ERR;
1041          goto jleave;
1042       }else if(!asccasecmp(option_Mm_arg, "text/plain")) /* TODO no: magic!! */
1043          option_Mm_arg = NULL;
1044    }
1045
1046    /*
1047     * We're finally completely setup and ready to go
1048     */
1049    pstate |= PS_STARTED;
1050
1051    if (!(options & OPT_SENDMODE)) {
1052       exit_status = _rcv_mode(folder, Larg);
1053       goto jleave;
1054    }
1055
1056    /* Now that full mailx(1)-style file expansion is possible handle the
1057     * attachments which we had delayed due to this.
1058     * This may use savestr(), but since we won't enter the command loop we
1059     * don't need to care about that */
1060    for (cp = NULL; a_head != NULL;) {
1061       struct attachment *nahp, *nap;
1062
1063       if ((nahp = add_attachment(n_LEXINPUT_CTX_DEFAULT, attach,
1064             a_head->aa_file, &nap)) != NULL) {
1065          attach = nahp;
1066          /* Did we split a charset set name for fixation purposes? */
1067          if (cp != NULL) {
1068             nap->a_conv = AC_FIX_INCS;
1069             nap->a_input_charset = cp;
1070             cp = NULL;
1071          }
1072          a_head = a_head->aa_next;
1073          continue;
1074       }
1075       i = errno;
1076
1077       /* It may not have worked because of an appended character set name, so
1078        * try to split name and charset and retry once */
1079       if (cp == NULL && (cp = strrchr(a_head->aa_file, '=')) != NULL) {
1080          char *ncp, *nfp = savestrbuf(a_head->aa_file,
1081                PTR2SIZE(cp - a_head->aa_file));
1082
1083          for (ncp = ++cp; *ncp != '\0'; ++ncp)
1084             if (!alnumchar(*ncp) && !punctchar(*ncp))
1085                break;
1086          if (*ncp == '\0') {
1087             a_head->aa_file = nfp;
1088             continue;
1089          }
1090       }
1091
1092       n_perr(a_head->aa_file, i);
1093       exit_status = EXIT_ERR;
1094       goto jleave;
1095    }
1096
1097    if (options & OPT_INTERACTIVE)
1098       n_tty_init();
1099    mail(to, cc, bcc, subject, attach, qf, ((options & OPT_F_FLAG) != 0));
1100    if (options & OPT_INTERACTIVE)
1101       n_tty_destroy();
1102
1103 jleave:
1104 #ifdef n_HAVE_TCAP
1105    if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) == OPT_INTERACTIVE)
1106       n_termcap_destroy();
1107 #endif
1108 j_leave:
1109 #ifdef HAVE_MEMORY_DEBUG
1110    n_memory_autorec_pop(NULL);
1111 #endif
1112    n_memory_reset();
1113    NYD_LEAVE;
1114    return exit_status;
1115 }
1116
1117 FL int
1118 c_exit(void *v){/* TODO program state machine */
1119    NYD_ENTER;
1120    n_UNUSED(v);
1121
1122    if(pstate & PS_STARTED){
1123       if(!(pstate & PS_SOURCING)){
1124 #ifdef n_HAVE_TCAP
1125          if((options & (OPT_INTERACTIVE | OPT_QUICKRUN_MASK)) ==
1126                OPT_INTERACTIVE)
1127             n_termcap_destroy();
1128 #endif
1129          exit(EXIT_OK);
1130       }
1131    }
1132    pstate |= PS_EXIT;
1133    NYD_LEAVE;
1134    return 0;
1135 }
1136
1137 /* Source the others in that case! */
1138 #ifdef HAVE_AMALGAMATION
1139 # include "config.h"
1140 #endif
1141
1142 /* s-it-mode */