git.marmaro.de Git - mmh/blob - uip/whatnowsbr.c

   1 /*
   2 ** whatnowsbr.c -- the WhatNow shell
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 **
   8 **  Several options have been added to ease the inclusion of attachments
   9 **  using the header field name mechanism added to anno and send.  The
  10 **  -attach option is used to specify the header field name for attachments.
  11 **
  12 **  Several commands have been added at the whatnow prompt:
  13 **
  14 **        cd [ directory ]        This option works just like the shell's
  15 **                                cd command and lets the user change the
  16 **                                directory from which attachments are
  17 **                                taken so that long path names are not
  18 **                                needed with every file.
  19 **
  20 **        ls [ ls-options ]       This option works just like the normal
  21 **                                ls command and exists to allow the user
  22 **                                to verify file names in the directory.
  23 **
  24 **        pwd                     This option works just like the normal
  25 **                                pwd command and exists to allow the user
  26 **                                to verify the directory.
  27 **
  28 **        attach files            This option attaches the named files to
  29 **                                the draft.
  30 **
  31 **        alist [-ln]             This option lists the attachments on the
  32 **                                draft.  -l gets long listings, -n gets
  33 **                                numbered listings.
  34 **
  35 **        detach files            This option removes attachments from the
  36 **        detach -n numbers       draft.  This can be done by file name or
  37 **                                by attachment number.
  38 */
  39
  40 #include <h/mh.h>
  41 #include <fcntl.h>
  42 #include <signal.h>
  43 #include <h/mime.h>
  44 #include <h/utils.h>
  45
  46 static struct swit whatnowswitches[] = {
  47 #define EDITRSW  0
  48         { "editor editor", 0 },
  49 #define NEDITSW  1
  50         { "noedit", 0 },
  51 #define PRMPTSW  2
  52         { "prompt string", 4 },
  53 #define VERSIONSW  3
  54         { "version", 0 },
  55 #define HELPSW  4
  56         { "help", 0 },
  57 #define ATTACHSW  5
  58         { "attach header-field-name", 0 },
  59         { NULL, 0 }
  60 };
  61
  62 /*
  63 ** Options at the "whatnow" prompt
  64 */
  65 static struct swit aleqs[] = {
  66 #define EDITSW  0
  67         { "edit [<editor> <switches>]", 0 },
  68 #define REFILEOPT  1
  69         { "refile [<switches>] +folder", 0 },
  70 #define BUILDMIMESW  2
  71         { "mime [<switches>]", 0 },
  72 #define DISPSW  3
  73         { "display [<switches>]", 0 },
  74 #define LISTSW  4
  75         { "list [<switches>]", 0 },
  76 #define SENDSW  5
  77         { "send [<switches>]", 0 },
  78 #define PUSHSW  6
  79         { "push [<switches>]", 0 },
  80 #define QUITSW  7
  81         { "quit [-delete]", 0 },
  82 #define DELETESW  8
  83         { "delete", 0 },
  84 #define CDCMDSW  9
  85         { "cd [directory]", 0 },
  86 #define PWDCMDSW  10
  87         { "pwd", 0 },
  88 #define LSCMDSW  11
  89         { "ls", 0 },
  90 #define ATTACHCMDSW  12
  91         { "attach", 0 },
  92 #define DETACHCMDSW  13
  93         { "detach [-n]", 2 },
  94 #define ALISTCMDSW  14
  95         { "alist [-ln] ", 2 },
  96         { NULL, 0 }
  97 };
  98
  99 static char *myprompt = "\nWhat now? ";
 100
 101 /*
 102 ** static prototypes
 103 */
 104 static int editfile(char **, char **, char *, int, struct msgs *,
 105         char *, char *, int);
 106 static int sendfile(char **, char *, int);
 107 static void sendit(char *, char **, char *, int);
 108 static int buildfile(char **, char *);
 109 static int check_draft(char *);
 110 static int removefile(char *);
 111 static void writelscmd(char *, int, char **);
 112 static void writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp);
 113 static FILE* popen_in_dir(const char *dir, const char *cmd, const char *type);
 114 static int system_in_dir(const char *dir, const char *cmd);
 115
 116
 117 #ifdef HAVE_LSTAT
 118 static int copyf(char *, char *);
 119 #endif
 120
 121
 122 int
 123 WhatNow(int argc, char **argv)
 124 {
 125         int nedit = 0, use = 0;
 126         char *cp;
 127         char *ed = NULL, *drft = NULL, *msgnam = NULL;
 128         char buf[BUFSIZ], prompt[BUFSIZ];
 129         char **argp, **arguments;
 130         struct stat st;
 131         char *attach = (char *)0;  /* attachment header field name */
 132         char cwd[MAXPATHLEN + 1];  /* current working directory */
 133         char file[MAXPATHLEN + 1];  /* file name buffer */
 134         char shell[MAXPATHLEN + 1];  /* shell response buffer */
 135         FILE *f;  /* read pointer for bgnd proc */
 136         char *l;  /* set on -l to alist  command */
 137         int n;  /* set on -n to alist command */
 138
 139         invo_name = mhbasename(argv[0]);
 140
 141         /* read user profile/context */
 142         context_read();
 143
 144         arguments = getarguments(invo_name, argc, argv, 1);
 145         argp = arguments;
 146
 147         /*
 148         ** Get the initial current working directory.
 149         */
 150
 151         if (getcwd(cwd, sizeof (cwd)) == (char *)0) {
 152                 adios("getcwd", "could not get working directory");
 153         }
 154
 155         while ((cp = *argp++)) {
 156                 if (*cp == '-') {
 157                         switch (smatch(++cp, whatnowswitches)) {
 158                         case AMBIGSW:
 159                                 ambigsw(cp, whatnowswitches);
 160                                 done(1);
 161                         case UNKWNSW:
 162                                 adios(NULL, "-%s unknown", cp);
 163
 164                         case HELPSW:
 165                                 snprintf(buf, sizeof(buf),
 166                                                 "%s [switches] [file]",
 167                                                 invo_name);
 168                                 print_help(buf, whatnowswitches, 1);
 169                                 done(1);
 170                         case VERSIONSW:
 171                                 print_version(invo_name);
 172                                 done(1);
 173
 174                         case EDITRSW:
 175                                 if (!(ed = *argp++) || *ed == '-')
 176                                         adios(NULL, "missing argument to %s",
 177                                                         argp[-2]);
 178                                 nedit = 0;
 179                                 continue;
 180                         case NEDITSW:
 181                                 nedit++;
 182                                 continue;
 183
 184                         case PRMPTSW:
 185                                 if (!(myprompt = *argp++) || *myprompt == '-')
 186                                         adios(NULL, "missing argument to %s",
 187                                                         argp[-2]);
 188                                 continue;
 189
 190                         case ATTACHSW:
 191                                 if (attach != (char *)0)
 192                                         adios(NULL, "only one attachment header field name at a time!");
 193                                 if (!(attach = *argp++) || *attach == '-')
 194                                         adios(NULL, "missing argument to %s",
 195                                                         argp[-2]);
 196                                 continue;
 197                         }
 198                 }
 199                 if (drft)
 200                         adios(NULL, "only one draft at a time!");
 201                 else
 202                         drft = cp;
 203         }
 204
 205         if ((drft == NULL && (drft = getenv("mhdraft")) == NULL) || *drft == 0)
 206                 drft = getcpy(m_draft("cur"));
 207
 208         msgnam = (cp = getenv("mhaltmsg")) && *cp ? getcpy(cp) : NULL;
 209
 210         if ((cp = getenv("mhuse")) && *cp)
 211                 use = atoi(cp);
 212
 213         if (ed == NULL && ((ed = getenv("mheditor")) == NULL || *ed == 0)) {
 214                 ed = NULL;
 215                 nedit++;
 216         }
 217
 218         /* start editing the draft, unless -noedit was given */
 219         if (!nedit && editfile(&ed, NULL, drft, use, NULL, msgnam, NULL, 1)
 220                         < 0)
 221                 done(1);
 222
 223         snprintf(prompt, sizeof(prompt), myprompt, invo_name);
 224         for (;;) {
 225                 if (!(argp = getans(prompt, aleqs))) {
 226                         unlink(altmsglink);
 227                         done(1);
 228                 }
 229                 switch (smatch(*argp, aleqs)) {
 230                 case DISPSW:
 231                         /*
 232                         ** display the message being replied to,
 233                         ** or distributed
 234                         */
 235                         if (msgnam)
 236                                 showfile(++argp, msgnam);
 237                         else
 238                                 advise(NULL, "no alternate message to display");
 239                         break;
 240
 241                 case BUILDMIMESW:
 242                         /* Translate MIME composition file */
 243                         buildfile(++argp, drft);
 244                         break;
 245
 246                 case EDITSW:
 247                         /* Call an editor on the draft file */
 248                         if (*++argp)
 249                                 ed = *argp++;
 250                         if (editfile(&ed, argp, drft, NOUSE, NULL,
 251                                         msgnam, NULL, 1) == NOTOK)
 252                                 done(1);
 253                         break;
 254
 255                 case LISTSW:
 256                         /* display the draft file */
 257                         showfile(++argp, drft);
 258                         break;
 259
 260                 case QUITSW:
 261                         /* Quit, and possibly delete the draft */
 262                         if (*++argp && (*argp[0] == 'd' ||
 263                                 ((*argp)[0] == '-' && (*argp)[1] == 'd'))) {
 264                                 removefile(drft);
 265                         } else {
 266                                 if (stat(drft, &st) != NOTOK)
 267                                         advise(NULL, "draft left on %s", drft);
 268                         }
 269                         done(1);
 270
 271                 case DELETESW:
 272                         /* Delete draft and exit */
 273                         removefile(drft);
 274                         done(1);
 275
 276                 case PUSHSW:
 277                         /* Send draft in background */
 278                         if (sendfile(++argp, drft, 1))
 279                                 done(1);
 280                         break;
 281
 282                 case SENDSW:
 283                         /* Send draft */
 284                         sendfile(++argp, drft, 0);
 285                         break;
 286
 287                 case REFILEOPT:
 288                         /* Refile the draft */
 289                         if (refile(++argp, drft) == 0)
 290                                 done(0);
 291                         break;
 292
 293                 case CDCMDSW:
 294                         /*
 295                         ** Change the working directory for attachments
 296                         **
 297                         ** Run the directory through the user's shell
 298                         ** so that we can take advantage of any syntax
 299                         ** that the user is accustomed to.  Read back
 300                         ** the absolute path.
 301                         */
 302
 303                         if (*(argp+1) == (char *)0) {
 304                                 (void)sprintf(buf, "$SHELL -c \"cd;pwd\"");
 305                         } else {
 306                                 writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
 307                         }
 308                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 309                                 fgets(cwd, sizeof (cwd), f);
 310
 311                                 if (strchr(cwd, '\n') != (char *)0)
 312                                                 *strchr(cwd, '\n') = '\0';
 313
 314                                 pclose(f);
 315                         } else {
 316                                 advise("popen", "could not get directory");
 317                         }
 318
 319                         break;
 320
 321                 case PWDCMDSW:
 322                         /* Print the working directory for attachments */
 323                         printf("%s\n", cwd);
 324                         break;
 325
 326                 case LSCMDSW:
 327                         /*
 328                         ** List files in the current attachment working
 329                         ** directory
 330                         **
 331                         ** Use the user's shell so that we can take
 332                         ** advantage of any syntax that the user is
 333                         ** accustomed to.
 334                         */
 335                         writelscmd(buf, sizeof(buf), argp);
 336                         (void)system_in_dir(cwd, buf);
 337                         break;
 338
 339                 case ALISTCMDSW:
 340                         /*
 341                         ** List attachments on current draft.  Options are:
 342                         **
 343                         ** -l    long listing (full path names)
 344                         ** -n    numbers listing
 345                         */
 346
 347                         if (attach == (char *)0) {
 348                                 advise((char *)0, "can't list because no header field name was given.");
 349                                 break;
 350                         }
 351
 352                         l = (char *)0;
 353                         n = 0;
 354
 355                         while (*++argp != (char *)0) {
 356                                 if (strcmp(*argp, "-l") == 0)
 357                                         l = "/";
 358
 359                                 else if (strcmp(*argp, "-n") == 0)
 360                                         n = 1;
 361
 362                                 else if (strcmp(*argp, "-ln") == 0 ||
 363                                                 strcmp(*argp, "-nl") == 0) {
 364                                         l = "/";
 365                                         n = 1;
 366                                 } else {
 367                                         n = -1;
 368                                         break;
 369                                 }
 370                         }
 371
 372                         if (n == -1)
 373                                 advise((char *)0, "usage is alist [-ln].");
 374
 375                         else
 376                                 annolist(drft, attach, l, n);
 377
 378                         break;
 379
 380                 case ATTACHCMDSW:
 381                         /*
 382                         ** Attach files to current draft.
 383                         */
 384
 385                         if (attach == (char *)0) {
 386                                 advise((char *)0, "can't attach because no header field name was given.");
 387                                 break;
 388                         }
 389
 390                         if (*(argp+1) == (char *)0) {
 391                                 advise((char *)0, "attach command requires file argument(s).");
 392                                 break;
 393                         }
 394
 395                         /*
 396                         ** Build a command line that causes the user's
 397                         ** shell to list the file name arguments.
 398                         ** This handles and wildcard expansion, tilde
 399                         ** expansion, etc.
 400                         */
 401                         writelscmd(buf, sizeof(buf), argp);
 402
 403                         /*
 404                         ** Read back the response from the shell,
 405                         ** which contains a number of lines with one
 406                         ** file name per line.  Remove off the newline.
 407                         ** Determine whether we have an absolute or
 408                         ** relative path name.  Prepend the current
 409                         ** working directory to relative path names.
 410                         ** Add the attachment annotation to the draft.
 411                         */
 412
 413                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 414                                 while (fgets(shell, sizeof (shell), f)
 415                                                 != (char *)0) {
 416                                         *(strchr(shell, '\n')) = '\0';
 417
 418                                         if (*shell == '/')
 419                                                 annotate(drft, attach, shell,
 420                                                                 1, 0, -2, 1);
 421                                         else {
 422                                                 sprintf(file, "%s/%s", cwd,
 423                                                                 shell);
 424                                                 annotate(drft, attach, file,
 425                                                                 1, 0, -2, 1);
 426                                         }
 427                                 }
 428
 429                                 pclose(f);
 430                         } else {
 431                                 advise("popen", "could not get file from shell");
 432                         }
 433
 434                         break;
 435
 436                 case DETACHCMDSW:
 437                         /*
 438                         ** Detach files from current draft.
 439                         */
 440
 441                         if (attach == (char *)0) {
 442                                 advise((char *)0, "can't detach because no header field name was given.");
 443                                 break;
 444                         }
 445
 446                         /*
 447                         ** Scan the arguments for a -n.  Mixed file
 448                         ** names and numbers aren't allowed, so this
 449                         ** catches a -n anywhere in the argument list.
 450                         */
 451
 452                         for (n = 0, arguments = argp + 1;
 453                                         *arguments != (char *)0;
 454                                         arguments++) {
 455                                 if (strcmp(*arguments, "-n") == 0) {
 456                                                 n = 1;
 457                                                 break;
 458                                 }
 459                         }
 460
 461                         /*
 462                         ** A -n was found so interpret the arguments as
 463                         ** attachment numbers.  Decrement any remaining
 464                         ** argument number that is greater than the one
 465                         ** just processed after processing each one so
 466                         ** that the numbering stays correct.
 467                         */
 468
 469                         if (n == 1) {
 470                                 for (arguments = argp + 1;
 471                                                 *arguments != (char *)0;
 472                                                 arguments++) {
 473                                         if (strcmp(*arguments, "-n") == 0)
 474                                                 continue;
 475
 476                                         if (**arguments != '\0') {
 477                                                 n = atoi(*arguments);
 478                                                 annotate(drft, attach, NULL,
 479                                                                 1, 0, n, 1);
 480
 481                                                 for (argp = arguments + 1; *argp != (char *)0; argp++) {
 482                                                         if (atoi(*argp) > n) {
 483                                                                 if (atoi(*argp) == 1)
 484                                                                         *argp = "";
 485                                                                 else
 486                                                                         (void)sprintf(*argp, "%d", atoi(*argp) - 1);
 487                                                         }
 488                                                 }
 489                                         }
 490                                 }
 491                         }
 492
 493                         /*
 494                         ** The arguments are interpreted as file names.
 495                         ** Run them through the user's shell for wildcard
 496                         ** expansion and other goodies.  Do this from
 497                         ** the current working directory if the argument
 498                         ** is not an absolute path name (does not begin
 499                         ** with a /).
 500                         **
 501                         ** We feed all the file names to the shell at
 502                         ** once, otherwise you can't provide a file name
 503                         ** with a space in it.
 504                         */
 505                         writelscmd(buf, sizeof(buf), argp);
 506                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 507                                 while (fgets(shell, sizeof (shell), f)
 508                                                 != NULL) {
 509                                         *(strchr(shell, '\n')) = '\0';
 510                                         annotate(drft, attach, shell,
 511                                                         1, 0, 0, 1);
 512                                 }
 513                                 pclose(f);
 514                         } else {
 515                                 advise("popen", "could not get file from shell");
 516                         }
 517
 518                         break;
 519
 520                 default:
 521                         /* Unknown command */
 522                         advise(NULL, "say what?");
 523                         break;
 524                 }
 525         }
 526         /*NOTREACHED*/
 527 }
 528
 529
 530
 531 /*
 532 ** Build a command line of the form $SHELL -c "cd 'cwd'; cmd argp ... ;
 533 ** trailcmd".
 534 */
 535 static void
 536 writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
 537 {
 538         char *cp;
 539         /*
 540         ** Note that we do not quote -- the argp from the user
 541         ** is assumed to be quoted as they desire. (We can't treat
 542         ** it as pure literal as that would prevent them using ~,
 543         ** wildcards, etc.) The buffer produced by this function
 544         ** should be given to popen_in_dir() or system_in_dir() so
 545         ** that the current working directory is set correctly.
 546         */
 547         int ln = snprintf(buf, bufsz, "$SHELL -c \"%s", cmd);
 548         /*
 549         ** NB that some snprintf() return -1 on overflow rather than the
 550         ** new C99 mandated 'number of chars that would have been written'
 551         */
 552         /*
 553         ** length checks here and inside the loop allow for the
 554         ** trailing ';', trailcmd, '"' and NUL
 555         */
 556         int trailln = strlen(trailcmd) + 3;
 557         if (ln < 0 || ln + trailln > bufsz)
 558                 adios((char *)0, "arguments too long");
 559
 560         cp = buf + ln;
 561
 562         while (*++argp != (char *)0) {
 563                 ln = strlen(*argp);
 564                 /* +1 for leading space */
 565                 if (ln + trailln + 1 > bufsz - (cp-buf))
 566                         adios((char *)0, "arguments too long");
 567                 *cp++ = ' ';
 568                 memcpy(cp, *argp, ln+1);
 569                 cp += ln;
 570         }
 571         if (*trailcmd) {
 572                 *cp++ = ';';
 573                 strcpy(cp, trailcmd);
 574                 cp += trailln - 3;
 575         }
 576         *cp++ = '"';
 577         *cp = 0;
 578 }
 579
 580 /*
 581 ** Build a command line that causes the user's shell to list the file name
 582 ** arguments.  This handles and wildcard expansion, tilde expansion, etc.
 583 */
 584 static void
 585 writelscmd(char *buf, int bufsz, char **argp)
 586 {
 587         writesomecmd(buf, bufsz, "ls", "", argp);
 588 }
 589
 590 /*
 591 ** Like system(), but run the command in directory dir.
 592 ** This assumes the program is single-threaded!
 593 */
 594 static int
 595 system_in_dir(const char *dir, const char *cmd)
 596 {
 597         char olddir[BUFSIZ];
 598         int r;
 599         if (getcwd(olddir, sizeof(olddir)) == 0)
 600                 adios("getcwd", "could not get working directory");
 601         if (chdir(dir) != 0)
 602                 adios("chdir", "could not change working directory");
 603         r = system(cmd);
 604         if (chdir(olddir) != 0)
 605                 adios("chdir", "could not change working directory");
 606         return r;
 607 }
 608
 609 /* ditto for popen() */
 610 static FILE*
 611 popen_in_dir(const char *dir, const char *cmd, const char *type)
 612 {
 613         char olddir[BUFSIZ];
 614         FILE *f;
 615         if (getcwd(olddir, sizeof(olddir)) == 0)
 616                 adios("getcwd", "could not get working directory");
 617         if (chdir(dir) != 0)
 618                 adios("chdir", "could not change working directory");
 619         f = popen(cmd, type);
 620         if (chdir(olddir) != 0)
 621                 adios("chdir", "could not change working directory");
 622         return f;
 623 }
 624
 625
 626 /*
 627 ** EDIT
 628 */
 629
 630 static int  reedit = 0;  /* have we been here before? */
 631 static char *edsave = NULL;  /* the editor we used previously */
 632
 633
 634 static int
 635 editfile(char **ed, char **arg, char *file, int use, struct msgs *mp,
 636         char *altmsg, char *cwd, int save_editor)
 637 {
 638         int pid, status, vecp;
 639         char altpath[BUFSIZ], linkpath[BUFSIZ];
 640         char *cp, *vec[MAXARGS];
 641         struct stat st;
 642
 643 #ifdef HAVE_LSTAT
 644         int slinked = 0;
 645 #if 0
 646         int oumask;  /* PJS: for setting permissions on symlinks. */
 647 #endif
 648 #endif /* HAVE_LSTAT */
 649
 650         /* Was there a previous edit session? */
 651         if (reedit) {
 652                 if (!*ed) {  /* no explicit editor */
 653                         *ed = edsave;  /* so use the previous one */
 654                         if ((cp = mhbasename(*ed)) == NULL)
 655                                 cp = *ed;
 656
 657                         /* unless we've specified it via "editor-next" */
 658                         cp = concat(cp, "-next", NULL);
 659                         if ((cp = context_find(cp)) != NULL)
 660                                 *ed = cp;
 661                 }
 662         } else {
 663                 /* set initial editor */
 664                 if (*ed == NULL && (*ed = context_find("editor")) == NULL)
 665                         *ed = defaulteditor;
 666         }
 667
 668         if (altmsg) {
 669                 if (mp == NULL || *altmsg == '/' || cwd == NULL)
 670                         strncpy(altpath, altmsg, sizeof(altpath));
 671                 else
 672                         snprintf(altpath, sizeof(altpath), "%s/%s",
 673                                         mp->foldpath, altmsg);
 674                 if (cwd == NULL)
 675                         strncpy(linkpath, altmsglink, sizeof(linkpath));
 676                 else
 677                         snprintf(linkpath, sizeof(linkpath), "%s/%s",
 678                                         cwd, altmsglink);
 679         }
 680
 681         if (altmsg) {
 682                 unlink(linkpath);
 683 #ifdef HAVE_LSTAT
 684                 if (link(altpath, linkpath) == NOTOK) {
 685 #if 0
 686                         /* I don't think permission on symlinks matters /JLR */
 687                         /* PJS: else symlinks are world 'r' */
 688                         oumask = umask(0044);
 689 #endif
 690                         symlink(altpath, linkpath);
 691 #if 0
 692                         umask(oumask);  /* PJS: else symlinks are world 'r' */
 693 #endif
 694                         slinked = 1;
 695                 } else {
 696                         slinked = 0;
 697                 }
 698 #else /* not HAVE_LSTAT */
 699                 link(altpath, linkpath);
 700 #endif /* not HAVE_LSTAT */
 701         }
 702
 703         context_save();  /* save the context file */
 704         fflush(stdout);
 705
 706         switch (pid = vfork()) {
 707                 case NOTOK:
 708                         advise("fork", "unable to");
 709                         status = NOTOK;
 710                         break;
 711
 712                 case OK:
 713                         if (cwd)
 714                                 chdir(cwd);
 715                         if (altmsg) {
 716                                 if (mp)
 717                                         m_putenv("mhfolder", mp->foldpath);
 718                                 m_putenv("editalt", altpath);
 719                         }
 720
 721                         vecp = 0;
 722                         vec[vecp++] = mhbasename(*ed);
 723                         if (arg)
 724                                 while (*arg)
 725                                         vec[vecp++] = *arg++;
 726                         vec[vecp++] = file;
 727                         vec[vecp] = NULL;
 728
 729                         execvp(*ed, vec);
 730                         fprintf(stderr, "unable to exec ");
 731                         perror(*ed);
 732                         _exit(-1);
 733
 734                 default:
 735                         if ((status = pidwait(pid, NOTOK))) {
 736 #ifdef ATTVIBUG
 737                                 if ((cp = mhbasename(*ed)) &&
 738                                                 strcmp(cp, "vi") == 0 &&
 739                                                 (status & 0x00ff) == 0)
 740                                         status = 0;
 741                                 else {
 742 #endif
 743                                 if (((status & 0xff00) != 0xff00)
 744                                         && (!reedit || (status & 0x00ff))) {
 745                                         if (!use && (status & 0xff00) && (rename(file, cp = m_backup (file)) != NOTOK)) {
 746                                                 advise(NULL, "problems with edit--draft left in %s", cp);
 747                                         } else {
 748                                                 advise(NULL, "problems with edit--%s preserved", file);
 749                                         }
 750                                 }
 751                                 status = -2;  /* maybe "reedit ? -2 : -1"? */
 752                                 break;
 753 #ifdef ATTVIBUG
 754                                 }
 755 #endif
 756                         }
 757
 758                         reedit++;
 759 #ifdef HAVE_LSTAT
 760                         if (altmsg && mp && !is_readonly(mp) && (slinked ?
 761                                         lstat (linkpath, &st) != NOTOK &&
 762                                         S_ISREG(st.st_mode) &&
 763                                         copyf(linkpath, altpath) == NOTOK :
 764                                         stat(linkpath, &st) != NOTOK &&
 765                                         st.st_nlink == 1 &&
 766                                         (unlink(altpath) == NOTOK ||
 767                                         link(linkpath, altpath) == NOTOK)))
 768                                 advise(linkpath, "unable to update %s from", altmsg);
 769 #else /* HAVE_LSTAT */
 770                         if (altmsg && mp && !is_readonly(mp) &&
 771                                         stat(linkpath, &st) != NOTOK &&
 772                                         st.st_nlink == 1 &&
 773                                         (unlink(altpath) == NOTOK ||
 774                                         link(linkpath, altpath) == NOTOK))
 775                                 advise(linkpath, "unable to update %s from",
 776                                                 altmsg);
 777 #endif /* HAVE_LSTAT */
 778         }
 779
 780         /* normally, we remember which editor we used */
 781         if (save_editor)
 782                 edsave = getcpy(*ed);
 783
 784         *ed = NULL;
 785         if (altmsg)
 786                 unlink(linkpath);
 787
 788         return status;
 789 }
 790
 791
 792 #ifdef HAVE_LSTAT
 793 static int
 794 copyf(char *ifile, char *ofile)
 795 {
 796         int i, in, out;
 797         char buffer[BUFSIZ];
 798
 799         if ((in = open(ifile, O_RDONLY)) == NOTOK)
 800                 return NOTOK;
 801         if ((out = open(ofile, O_WRONLY | O_TRUNC)) == NOTOK) {
 802                 admonish(ofile, "unable to open and truncate");
 803                 close(in);
 804                 return NOTOK;
 805         }
 806
 807         while ((i = read(in, buffer, sizeof(buffer))) > OK)
 808                 if (write(out, buffer, i) != i) {
 809                         advise(ofile, "may have damaged");
 810                         i = NOTOK;
 811                         break;
 812                 }
 813
 814         close(in);
 815         close(out);
 816         return i;
 817 }
 818 #endif /* HAVE_LSTAT */
 819
 820
 821 /*
 822 ** SEND
 823 */
 824
 825 static int
 826 sendfile(char **arg, char *file, int pushsw)
 827 {
 828         pid_t child_id;
 829         int i, vecp;
 830         char *cp, *sp, *vec[MAXARGS];
 831
 832         /* Translate MIME composition file, if necessary */
 833         if ((cp = context_find("automimeproc")) && (!strcmp(cp, "1")) &&
 834                         !getenv("NOMHNPROC") && check_draft(file) &&
 835                         (buildfile(NULL, file) == NOTOK))
 836                 return 0;
 837
 838         /* For backwards compatibility */
 839         if ((cp = context_find("automhnproc")) && !getenv("NOMHNPROC")
 840                         && check_draft(file) && (i = editfile(&cp, NULL,
 841                         file, NOUSE, NULL, NULL, NULL, 0)))
 842                 return 0;
 843
 844         /*
 845         ** If the sendproc is the nmh command `send', then we call
 846         ** those routines directly rather than exec'ing the command.
 847         */
 848         if (strcmp(sp = mhbasename(sendproc), "send") == 0) {
 849                 cp = invo_name;
 850                 sendit(invo_name = sp, arg, file, pushsw);
 851                 invo_name = cp;
 852                 return 1;
 853         }
 854
 855         context_save();  /* save the context file */
 856         fflush(stdout);
 857
 858         for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 859                 sleep(5);
 860         switch (child_id) {
 861                 case NOTOK:
 862                         advise(NULL, "unable to fork, so sending directly...");
 863                 case OK:
 864                         vecp = 0;
 865                         vec[vecp++] = invo_name;
 866                         if (pushsw)
 867                                 vec[vecp++] = "-push";
 868                         if (arg)
 869                                 while (*arg)
 870                                         vec[vecp++] = *arg++;
 871                         vec[vecp++] = file;
 872                         vec[vecp] = NULL;
 873
 874                         execvp(sendproc, vec);
 875                         fprintf(stderr, "unable to exec ");
 876                         perror(sendproc);
 877                         _exit(-1);
 878
 879                 default:
 880                         if (pidwait(child_id, OK) == 0)
 881                                 done(0);
 882                         return 1;
 883         }
 884 }
 885
 886
 887 /*
 888 ** Translate MIME composition file (call buildmimeproc)
 889 */
 890
 891 static int
 892 buildfile(char **argp, char *file)
 893 {
 894         int i;
 895         char **args, *ed;
 896
 897         ed = buildmimeproc;
 898
 899         /* allocate space for arguments */
 900         i = 0;
 901         if (argp) {
 902                 while (argp[i])
 903                         i++;
 904         }
 905         args = (char **) mh_xmalloc((i + 2) * sizeof(char *));
 906
 907         /*
 908         ** For backward compatibility, we need to add -build
 909         ** if we are using mhn as buildmimeproc
 910         */
 911         i = 0;
 912         if (strcmp(mhbasename(ed), "mhn") == 0)
 913                 args[i++] = "-build";
 914
 915         /* copy any other arguments */
 916         while (argp && *argp)
 917                 args[i++] = *argp++;
 918         args[i] = NULL;
 919
 920         i = editfile(&ed, args, file, NOUSE, NULL, NULL, NULL, 0);
 921         free(args);
 922
 923         return (i ? NOTOK : OK);
 924 }
 925
 926
 927 /*
 928 **  Check if draft is a mhbuild composition file
 929 */
 930
 931 static int
 932 check_draft(char *msgnam)
 933 {
 934         int state;
 935         char buf[BUFSIZ], name[NAMESZ];
 936         FILE *fp;
 937
 938         if ((fp = fopen(msgnam, "r")) == NULL)
 939                 return 0;
 940         for (state = FLD;;)
 941                 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
 942                         case FLD:
 943                         case FLDPLUS:
 944                         case FLDEOF:
 945                                 /*
 946                                 ** If draft already contains any of the
 947                                 ** Content-XXX fields, then assume it already
 948                                 ** been converted.
 949                                 */
 950                                 if (uprf(name, XXX_FIELD_PRF)) {
 951                                         fclose(fp);
 952                                         return 0;
 953                                 }
 954                                 while (state == FLDPLUS)
 955                                         state = m_getfld(state, name, buf,
 956                                                         sizeof(buf), fp);
 957                                 break;
 958
 959                         case BODY:
 960                                 do {
 961                                         char *bp;
 962
 963                                         for (bp = buf; *bp; bp++)
 964                                                 if (*bp != ' ' && *bp != '\t' && *bp != '\n') {
 965                                                         fclose(fp);
 966                                                         return 1;
 967                                                 }
 968
 969                                         state = m_getfld(state, name, buf,
 970                                                         sizeof(buf), fp);
 971                                 } while (state == BODY);
 972                                 /* and fall... */
 973
 974                         default:
 975                                 fclose(fp);
 976                                 return 0;
 977                 }
 978 }
 979
 980
 981 static struct swit  sendswitches[] = {
 982 #define ALIASW  0
 983         { "alias aliasfile", 0 },
 984 #define DEBUGSW  1
 985         { "debug", -5 },
 986 #define FILTSW  2
 987         { "filter filterfile", 0 },
 988 #define NFILTSW  3
 989         { "nofilter", 0 },
 990 #define FRMTSW  4
 991         { "format", 0 },
 992 #define NFRMTSW  5
 993         { "noformat", 0 },
 994 #define FORWSW  6
 995         { "forward", 0 },
 996 #define NFORWSW  7
 997         { "noforward", 0 },
 998 #define MIMESW  8
 999         { "mime", 0 },
1000 #define NMIMESW  9
1001         { "nomime", 0 },
1002 #define MSGDSW  10
1003         { "msgid", 0 },
1004 #define NMSGDSW  11
1005         { "nomsgid", 0 },
1006 #define SPSHSW  12
1007         { "push", 0 },
1008 #define NSPSHSW  13
1009         { "nopush", 0 },
1010 #define UNIQSW  14
1011         { "unique", -6 },
1012 #define NUNIQSW  15
1013         { "nounique", -8 },
1014 #define VERBSW  16
1015         { "verbose", 0 },
1016 #define NVERBSW  17
1017         { "noverbose", 0 },
1018 #define WATCSW  18
1019         { "watch", 0 },
1020 #define NWATCSW  19
1021         { "nowatch", 0 },
1022 #define WIDTHSW  20
1023         { "width columns", 0 },
1024 #define SVERSIONSW  21
1025         { "version", 0 },
1026 #define SHELPSW  22
1027         { "help", 0 },
1028 #define BITSTUFFSW  23
1029         { "dashstuffing", -12 },
1030 #define NBITSTUFFSW  24
1031         { "nodashstuffing", -14 },
1032 #define MAILSW  25
1033         { "mail", -4 },
1034 #define SAMLSW  26
1035         { "saml", -4 },
1036 #define SSNDSW  27
1037         { "send", -4 },
1038 #define SOMLSW  28
1039         { "soml", -4 },
1040 #define CLIESW  29
1041         { "client host", -6 },
1042 #define SERVSW  30
1043         { "server host", 6 },
1044 #define SNOOPSW  31
1045         { "snoop", -5 },
1046 #define SNDATTACHSW  32
1047         { "attach file", 6 },
1048 #define SNDATTACHFORMAT   33
1049         { "attachformat", 7 },
1050 #define PORTSW  34
1051         { "port server-port-name/number", 4 },
1052         { NULL, 0 }
1053 };
1054
1055
1056 extern int debugsw;  /* from sendsbr.c */
1057 extern int forwsw;
1058 extern int inplace;
1059 extern int pushsw;
1060 extern int unique;
1061 extern int verbsw;
1062
1063 extern char *altmsg;  /*  .. */
1064 extern char *annotext;
1065 extern char *distfile;
1066
1067
1068 static void
1069 sendit(char *sp, char **arg, char *file, int pushed)
1070 {
1071         int vecp, n = 1;
1072         char *cp, buf[BUFSIZ], **argp;
1073         char **arguments, *vec[MAXARGS];
1074         struct stat st;
1075         char *attach = (char *)0;  /* attachment header field name */
1076         int attachformat = 0;  /* mhbuild format specifier for attachments */
1077
1078 #ifndef lint
1079         int distsw = 0;
1080 #endif
1081 #ifdef UCI
1082         FILE *fp;
1083 #endif
1084
1085         /*
1086         ** Make sure these are defined.  In particular, we need
1087         ** vec[1] to be NULL, in case "arg" is NULL below.  It
1088         ** doesn't matter what is the value of vec[0], but we
1089         ** set it to NULL, to help catch "off-by-one" errors.
1090         */
1091         vec[0] = NULL;
1092         vec[1] = NULL;
1093
1094         /*
1095         ** Temporarily copy arg to vec, since the brkstring() call in
1096         ** getarguments() will wipe it out before it is merged in.
1097         ** Also, we skip the first element of vec, since getarguments()
1098         ** skips it.  Then we count the number of arguments
1099         ** copied.  The value of "n" will be one greater than
1100         ** this in order to simulate the standard argc/argv.
1101         */
1102         if (arg) {
1103                 char **bp;
1104
1105                 copyip(arg, vec+1, MAXARGS-1);
1106                 bp = vec+1;
1107                 while (*bp++)
1108                         n++;
1109         }
1110
1111         /*
1112         ** Merge any arguments from command line (now in vec)
1113         ** and arguments from profile.
1114         */
1115         arguments = getarguments (sp, n, vec, 1);
1116         argp = arguments;
1117
1118         debugsw = 0;
1119         forwsw = 1;
1120         inplace = 1;
1121         unique = 0;
1122
1123         altmsg = NULL;
1124         annotext = NULL;
1125         distfile = NULL;
1126
1127         vecp = 1;  /* we'll get the zero'th element later */
1128         vec[vecp++] = "-library";
1129         vec[vecp++] = getcpy(toabsdir("+"));
1130
1131         while ((cp = *argp++)) {
1132                 if (*cp == '-') {
1133                         switch (smatch(++cp, sendswitches)) {
1134                                 case AMBIGSW:
1135                                         ambigsw(cp, sendswitches);
1136                                         return;
1137                                 case UNKWNSW:
1138                                         advise(NULL, "-%s unknown\n", cp);
1139                                         return;
1140
1141                                 case SHELPSW:
1142                                         snprintf(buf, sizeof(buf),
1143                                                         "%s [switches]", sp);
1144                                         print_help(buf, sendswitches, 1);
1145                                         return;
1146                                 case SVERSIONSW:
1147                                         print_version(invo_name);
1148                                         return;
1149
1150                                 case SPSHSW:
1151                                         pushed++;
1152                                         continue;
1153                                 case NSPSHSW:
1154                                         pushed = 0;
1155                                         continue;
1156
1157                                 case UNIQSW:
1158                                         unique++;
1159                                         continue;
1160                                 case NUNIQSW:
1161                                         unique = 0;
1162                                         continue;
1163                                 case FORWSW:
1164                                         forwsw++;
1165                                         continue;
1166                                 case NFORWSW:
1167                                         forwsw = 0;
1168                                         continue;
1169
1170                                 case VERBSW:
1171                                         verbsw++;
1172                                         vec[vecp++] = --cp;
1173                                         continue;
1174                                 case NVERBSW:
1175                                         verbsw = 0;
1176                                         vec[vecp++] = --cp;
1177                                         continue;
1178
1179                                 case DEBUGSW:
1180                                         debugsw++;  /* fall */
1181                                 case NFILTSW:
1182                                 case FRMTSW:
1183                                 case NFRMTSW:
1184                                 case BITSTUFFSW:
1185                                 case NBITSTUFFSW:
1186                                 case MIMESW:
1187                                 case NMIMESW:
1188                                 case MSGDSW:
1189                                 case NMSGDSW:
1190                                 case WATCSW:
1191                                 case NWATCSW:
1192                                 case MAILSW:
1193                                 case SAMLSW:
1194                                 case SSNDSW:
1195                                 case SOMLSW:
1196                                 case SNOOPSW:
1197                                         vec[vecp++] = --cp;
1198                                         continue;
1199
1200                                 case ALIASW:
1201                                 case FILTSW:
1202                                 case WIDTHSW:
1203                                 case CLIESW:
1204                                 case SERVSW:
1205                                 case PORTSW:
1206                                         vec[vecp++] = --cp;
1207                                         if (!(cp = *argp++) || *cp == '-') {
1208                                                 advise(NULL, "missing argument to %s", argp[-2]);
1209                                                 return;
1210                                         }
1211                                         vec[vecp++] = cp;
1212                                         continue;
1213
1214                                 case SNDATTACHSW:
1215                                         if (!(attach = *argp++) ||
1216                                                         *attach == '-') {
1217                                                 advise(NULL, "missing argument to %s", argp[-2]);
1218                                                 return;
1219                                         }
1220                                         continue;
1221
1222                                 case SNDATTACHFORMAT:
1223                                         if (! *argp || **argp == '-')
1224                                                 adios(NULL, "missing argument to %s", argp[-1]);
1225                                         else {
1226                                                 attachformat = atoi(*argp);
1227                                                 if (attachformat < 0 || attachformat > ATTACHFORMATS - 1) {
1228                                                         advise(NULL, "unsupported attachformat %d", attachformat);
1229                                                         continue;
1230                                                 }
1231                                         }
1232                                         ++argp;
1233                                         continue;
1234                         }
1235                 }
1236                 advise(NULL, "usage: %s [switches]", sp);
1237                 return;
1238         }
1239
1240         /* allow Aliasfile: profile entry */
1241         if ((cp = context_find("Aliasfile"))) {
1242                 char **ap, *dp;
1243
1244                 dp = getcpy(cp);
1245                 for (ap = brkstring(dp, " ", "\n"); ap && *ap; ap++) {
1246                         vec[vecp++] = "-alias";
1247                         vec[vecp++] = *ap;
1248                 }
1249         }
1250
1251         if ((cp = getenv("SIGNATURE")) == NULL || *cp == 0)
1252                 if ((cp = context_find("signature")) && *cp)
1253                         m_putenv("SIGNATURE", cp);
1254 #ifdef UCI
1255                 else {
1256                         snprintf(buf, sizeof(buf), "%s/.signature", mypath);
1257                         if ((fp = fopen(buf, "r")) != NULL &&
1258                                         fgets(buf, sizeof(buf), fp) != NULL) {
1259                                 fclose(fp);
1260                                 if (cp = strchr(buf, '\n'))
1261                                         *cp = 0;
1262                                 m_putenv("SIGNATURE", buf);
1263                         }
1264                 }
1265 #endif /* UCI */
1266
1267         if ((annotext = getenv("mhannotate")) == NULL || *annotext == 0)
1268                 annotext = NULL;
1269         if ((altmsg = getenv("mhaltmsg")) == NULL || *altmsg == 0)
1270                 altmsg = NULL;
1271         if (annotext && ((cp = getenv("mhinplace")) != NULL && *cp != 0))
1272                 inplace = atoi(cp);
1273
1274         if ((cp = getenv("mhdist")) && *cp
1275 #ifndef lint
1276                         && (distsw = atoi (cp))
1277 #endif /* not lint */
1278                         && altmsg) {
1279                 vec[vecp++] = "-dist";
1280                 distfile = getcpy(m_mktemp2(altmsg, invo_name, NULL, NULL));
1281                 if (link(altmsg, distfile) == NOTOK)
1282                         adios(distfile, "unable to link %s to", altmsg);
1283         } else {
1284                 distfile = NULL;
1285         }
1286
1287         if (altmsg == NULL || stat(altmsg, &st) == NOTOK) {
1288                 st.st_mtime = 0;
1289                 st.st_dev = 0;
1290                 st.st_ino = 0;
1291         }
1292         if ((pushsw = pushed))
1293                 push();
1294
1295         vec[0] = mhbasename(postproc);
1296         closefds(3);
1297
1298         if (sendsbr(vec, vecp, file, &st, 1, attach, attachformat) == OK)
1299                 done(0);
1300 }
1301
1302
1303 /*
1304 ** Remove the draft file
1305 */
1306
1307 static int
1308 removefile(char *drft)
1309 {
1310         if (unlink(drft) == NOTOK)
1311                 adios(drft, "unable to unlink");
1312
1313         return OK;
1314 }