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 = NULL;  /* 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)) == NULL) {
 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 != NULL)
 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) == NULL) {
 304                                 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') != NULL)
 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                         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 == NULL) {
 348                                 advise(NULL, "can't list because no header field name was given.");
 349                                 break;
 350                         }
 351
 352                         l = NULL;
 353                         n = 0;
 354
 355                         while (*++argp != NULL) {
 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(NULL, "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 == NULL) {
 386                                 advise(NULL, "can't attach because no header field name was given.");
 387                                 break;
 388                         }
 389
 390                         if (*(argp+1) == NULL) {
 391                                 advise(NULL, "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                                                 != NULL) {
 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 == NULL) {
 442                                 advise(NULL, "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 != NULL;
 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 != NULL;
 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 != NULL; argp++) {
 482                                                         if (atoi(*argp) > n) {
 483                                                                 if (atoi(*argp) == 1)
 484                                                                         *argp = "";
 485                                                                 else
 486                                                                         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(NULL, "arguments too long");
 559
 560         cp = buf + ln;
 561
 562         while (*++argp != NULL) {
 563                 ln = strlen(*argp);
 564                 /* +1 for leading space */
 565                 if (ln + trailln + 1 > bufsz - (cp-buf))
 566                         adios(NULL, "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 = fork()) {
 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)) && strcmp(cp, "vi") == 0 &&
 738                                         (status & 0x00ff) == 0)
 739                                 status = 0;
 740                         else {
 741 #endif
 742                         if (((status & 0xff00) != 0xff00)
 743                                 && (!reedit || (status & 0x00ff))) {
 744                                 if (!use && (status & 0xff00) && (rename(file, cp = m_backup (file)) != NOTOK)) {
 745                                         advise(NULL, "problems with edit--draft left in %s", cp);
 746                                 } else {
 747                                         advise(NULL, "problems with edit--%s preserved", file);
 748                                 }
 749                         }
 750                         status = -2;  /* maybe "reedit ? -2 : -1"? */
 751                         break;
 752 #ifdef ATTVIBUG
 753                         }
 754 #endif
 755                 }
 756
 757                 reedit++;
 758 #ifdef HAVE_LSTAT
 759                 if (altmsg && mp && !is_readonly(mp) && (slinked ?
 760                                 lstat (linkpath, &st) != NOTOK &&
 761                                 S_ISREG(st.st_mode) &&
 762                                 copyf(linkpath, altpath) == NOTOK :
 763                                 stat(linkpath, &st) != NOTOK &&
 764                                 st.st_nlink == 1 &&
 765                                 (unlink(altpath) == NOTOK ||
 766                                 link(linkpath, altpath) == NOTOK)))
 767                         advise(linkpath, "unable to update %s from", altmsg);
 768 #else /* HAVE_LSTAT */
 769                 if (altmsg && mp && !is_readonly(mp) &&
 770                                 stat(linkpath, &st) != NOTOK &&
 771                                 st.st_nlink == 1 &&
 772                                 (unlink(altpath) == NOTOK ||
 773                                 link(linkpath, altpath) == NOTOK))
 774                         advise(linkpath, "unable to update %s from", altmsg);
 775 #endif /* HAVE_LSTAT */
 776         }
 777
 778         /* normally, we remember which editor we used */
 779         if (save_editor)
 780                 edsave = getcpy(*ed);
 781
 782         *ed = NULL;
 783         if (altmsg)
 784                 unlink(linkpath);
 785
 786         return status;
 787 }
 788
 789
 790 #ifdef HAVE_LSTAT
 791 static int
 792 copyf(char *ifile, char *ofile)
 793 {
 794         int i, in, out;
 795         char buffer[BUFSIZ];
 796
 797         if ((in = open(ifile, O_RDONLY)) == NOTOK)
 798                 return NOTOK;
 799         if ((out = open(ofile, O_WRONLY | O_TRUNC)) == NOTOK) {
 800                 admonish(ofile, "unable to open and truncate");
 801                 close(in);
 802                 return NOTOK;
 803         }
 804
 805         while ((i = read(in, buffer, sizeof(buffer))) > OK)
 806                 if (write(out, buffer, i) != i) {
 807                         advise(ofile, "may have damaged");
 808                         i = NOTOK;
 809                         break;
 810                 }
 811
 812         close(in);
 813         close(out);
 814         return i;
 815 }
 816 #endif /* HAVE_LSTAT */
 817
 818
 819 /*
 820 ** SEND
 821 */
 822
 823 static int
 824 sendfile(char **arg, char *file, int pushsw)
 825 {
 826         pid_t child_id;
 827         int i, vecp;
 828         char *cp, *sp, *vec[MAXARGS];
 829
 830         /* Translate MIME composition file, if necessary */
 831         if ((cp = context_find("automimeproc")) && (!strcmp(cp, "1")) &&
 832                         !getenv("NOMHNPROC") && check_draft(file) &&
 833                         (buildfile(NULL, file) == NOTOK))
 834                 return 0;
 835
 836         /* For backwards compatibility */
 837         if ((cp = context_find("automhnproc")) && !getenv("NOMHNPROC")
 838                         && check_draft(file) && (i = editfile(&cp, NULL,
 839                         file, NOUSE, NULL, NULL, NULL, 0)))
 840                 return 0;
 841
 842         /*
 843         ** If the sendproc is the nmh command `send', then we call
 844         ** those routines directly rather than exec'ing the command.
 845         */
 846         if (strcmp(sp = mhbasename(sendproc), "send") == 0) {
 847                 cp = invo_name;
 848                 sendit(invo_name = sp, arg, file, pushsw);
 849                 invo_name = cp;
 850                 return 1;
 851         }
 852
 853         context_save();  /* save the context file */
 854         fflush(stdout);
 855
 856         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 857                 sleep(5);
 858         switch (child_id) {
 859         case NOTOK:
 860                 advise(NULL, "unable to fork, so sending directly...");
 861         case OK:
 862                 vecp = 0;
 863                 vec[vecp++] = invo_name;
 864                 if (pushsw)
 865                         vec[vecp++] = "-push";
 866                 if (arg)
 867                         while (*arg)
 868                                 vec[vecp++] = *arg++;
 869                 vec[vecp++] = file;
 870                 vec[vecp] = NULL;
 871
 872                 execvp(sendproc, vec);
 873                 fprintf(stderr, "unable to exec ");
 874                 perror(sendproc);
 875                 _exit(-1);
 876
 877         default:
 878                 if (pidwait(child_id, OK) == 0)
 879                         done(0);
 880                 return 1;
 881         }
 882 }
 883
 884
 885 /*
 886 ** Translate MIME composition file (call buildmimeproc)
 887 */
 888
 889 static int
 890 buildfile(char **argp, char *file)
 891 {
 892         int i;
 893         char **args, *ed;
 894
 895         ed = buildmimeproc;
 896
 897         /* allocate space for arguments */
 898         i = 0;
 899         if (argp) {
 900                 while (argp[i])
 901                         i++;
 902         }
 903         args = (char **) mh_xmalloc((i + 2) * sizeof(char *));
 904
 905         /*
 906         ** For backward compatibility, we need to add -build
 907         ** if we are using mhn as buildmimeproc
 908         */
 909         i = 0;
 910         if (strcmp(mhbasename(ed), "mhn") == 0)
 911                 args[i++] = "-build";
 912
 913         /* copy any other arguments */
 914         while (argp && *argp)
 915                 args[i++] = *argp++;
 916         args[i] = NULL;
 917
 918         i = editfile(&ed, args, file, NOUSE, NULL, NULL, NULL, 0);
 919         free(args);
 920
 921         return (i ? NOTOK : OK);
 922 }
 923
 924
 925 /*
 926 **  Check if draft is a mhbuild composition file
 927 */
 928
 929 static int
 930 check_draft(char *msgnam)
 931 {
 932         int state;
 933         char buf[BUFSIZ], name[NAMESZ];
 934         FILE *fp;
 935
 936         if ((fp = fopen(msgnam, "r")) == NULL)
 937                 return 0;
 938         for (state = FLD;;)
 939                 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
 940                 case FLD:
 941                 case FLDPLUS:
 942                 case FLDEOF:
 943                         /*
 944                         ** If draft already contains any of the
 945                         ** Content-XXX fields, then assume it already
 946                         ** been converted.
 947                         */
 948                         if (uprf(name, XXX_FIELD_PRF)) {
 949                                 fclose(fp);
 950                                 return 0;
 951                         }
 952                         while (state == FLDPLUS)
 953                                 state = m_getfld(state, name, buf,
 954                                                 sizeof(buf), fp);
 955                         break;
 956
 957                 case BODY:
 958                         do {
 959                                 char *bp;
 960
 961                                 for (bp = buf; *bp; bp++)
 962                                         if (*bp != ' ' && *bp != '\t' &&
 963                                                         *bp != '\n') {
 964                                                 fclose(fp);
 965                                                 return 1;
 966                                         }
 967
 968                                 state = m_getfld(state, name, buf,
 969                                                 sizeof(buf), fp);
 970                         } while (state == BODY);
 971                         /* and fall... */
 972
 973                 default:
 974                         fclose(fp);
 975                         return 0;
 976                 }
 977 }
 978
 979
 980 static struct swit  sendswitches[] = {
 981 #define ALIASW  0
 982         { "alias aliasfile", 0 },
 983 #define DEBUGSW  1
 984         { "debug", -5 },
 985 #define FILTSW  2
 986         { "filter filterfile", 0 },
 987 #define NFILTSW  3
 988         { "nofilter", 0 },
 989 #define FRMTSW  4
 990         { "format", 0 },
 991 #define NFRMTSW  5
 992         { "noformat", 0 },
 993 #define FORWSW  6
 994         { "forward", 0 },
 995 #define NFORWSW  7
 996         { "noforward", 0 },
 997 #define MIMESW  8
 998         { "mime", 0 },
 999 #define NMIMESW  9
1000         { "nomime", 0 },
1001 #define MSGDSW  10
1002         { "msgid", 0 },
1003 #define NMSGDSW  11
1004         { "nomsgid", 0 },
1005 #define SPSHSW  12
1006         { "push", 0 },
1007 #define NSPSHSW  13
1008         { "nopush", 0 },
1009 #define UNIQSW  14
1010         { "unique", -6 },
1011 #define NUNIQSW  15
1012         { "nounique", -8 },
1013 #define VERBSW  16
1014         { "verbose", 0 },
1015 #define NVERBSW  17
1016         { "noverbose", 0 },
1017 #define WATCSW  18
1018         { "watch", 0 },
1019 #define NWATCSW  19
1020         { "nowatch", 0 },
1021 #define WIDTHSW  20
1022         { "width columns", 0 },
1023 #define SVERSIONSW  21
1024         { "version", 0 },
1025 #define SHELPSW  22
1026         { "help", 0 },
1027 #define BITSTUFFSW  23
1028         { "dashstuffing", -12 },
1029 #define NBITSTUFFSW  24
1030         { "nodashstuffing", -14 },
1031 #define MAILSW  25
1032         { "mail", -4 },
1033 #define SAMLSW  26
1034         { "saml", -4 },
1035 #define SSNDSW  27
1036         { "send", -4 },
1037 #define SOMLSW  28
1038         { "soml", -4 },
1039 #define CLIESW  29
1040         { "client host", -6 },
1041 #define SERVSW  30
1042         { "server host", 6 },
1043 #define SNOOPSW  31
1044         { "snoop", -5 },
1045 #define SNDATTACHSW  32
1046         { "attach file", 6 },
1047 #define SNDATTACHFORMAT   33
1048         { "attachformat", 7 },
1049 #define PORTSW  34
1050         { "port server-port-name/number", 4 },
1051         { NULL, 0 }
1052 };
1053
1054
1055 extern int debugsw;  /* from sendsbr.c */
1056 extern int forwsw;
1057 extern int inplace;
1058 extern int pushsw;
1059 extern int unique;
1060 extern int verbsw;
1061
1062 extern char *altmsg;  /*  .. */
1063 extern char *annotext;
1064 extern char *distfile;
1065
1066
1067 static void
1068 sendit(char *sp, char **arg, char *file, int pushed)
1069 {
1070         int vecp, n = 1;
1071         char *cp, buf[BUFSIZ], **argp;
1072         char **arguments, *vec[MAXARGS];
1073         struct stat st;
1074         char *attach = NULL;  /* attachment header field name */
1075         int attachformat = 0;  /* mhbuild format specifier for attachments */
1076
1077 #ifndef lint
1078         int distsw = 0;
1079 #endif
1080 #ifdef UCI
1081         FILE *fp;
1082 #endif
1083
1084         /*
1085         ** Make sure these are defined.  In particular, we need
1086         ** vec[1] to be NULL, in case "arg" is NULL below.  It
1087         ** doesn't matter what is the value of vec[0], but we
1088         ** set it to NULL, to help catch "off-by-one" errors.
1089         */
1090         vec[0] = NULL;
1091         vec[1] = NULL;
1092
1093         /*
1094         ** Temporarily copy arg to vec, since the brkstring() call in
1095         ** getarguments() will wipe it out before it is merged in.
1096         ** Also, we skip the first element of vec, since getarguments()
1097         ** skips it.  Then we count the number of arguments
1098         ** copied.  The value of "n" will be one greater than
1099         ** this in order to simulate the standard argc/argv.
1100         */
1101         if (arg) {
1102                 char **bp;
1103
1104                 copyip(arg, vec+1, MAXARGS-1);
1105                 bp = vec+1;
1106                 while (*bp++)
1107                         n++;
1108         }
1109
1110         /*
1111         ** Merge any arguments from command line (now in vec)
1112         ** and arguments from profile.
1113         */
1114         arguments = getarguments (sp, n, vec, 1);
1115         argp = arguments;
1116
1117         debugsw = 0;
1118         forwsw = 1;
1119         inplace = 1;
1120         unique = 0;
1121
1122         altmsg = NULL;
1123         annotext = NULL;
1124         distfile = NULL;
1125
1126         vecp = 1;  /* we'll get the zero'th element later */
1127         vec[vecp++] = "-library";
1128         vec[vecp++] = getcpy(toabsdir("+"));
1129
1130         while ((cp = *argp++)) {
1131                 if (*cp == '-') {
1132                         switch (smatch(++cp, sendswitches)) {
1133                         case AMBIGSW:
1134                                 ambigsw(cp, sendswitches);
1135                                 return;
1136                         case UNKWNSW:
1137                                 advise(NULL, "-%s unknown\n", cp);
1138                                 return;
1139
1140                         case SHELPSW:
1141                                 snprintf(buf, sizeof(buf),
1142                                                 "%s [switches]", sp);
1143                                 print_help(buf, sendswitches, 1);
1144                                 return;
1145                         case SVERSIONSW:
1146                                 print_version(invo_name);
1147                                 return;
1148
1149                         case SPSHSW:
1150                                 pushed++;
1151                                 continue;
1152                         case NSPSHSW:
1153                                 pushed = 0;
1154                                 continue;
1155
1156                         case UNIQSW:
1157                                 unique++;
1158                                 continue;
1159                         case NUNIQSW:
1160                                 unique = 0;
1161                                 continue;
1162                         case FORWSW:
1163                                 forwsw++;
1164                                 continue;
1165                         case NFORWSW:
1166                                 forwsw = 0;
1167                                 continue;
1168
1169                         case VERBSW:
1170                                 verbsw++;
1171                                 vec[vecp++] = --cp;
1172                                 continue;
1173                         case NVERBSW:
1174                                 verbsw = 0;
1175                                 vec[vecp++] = --cp;
1176                                 continue;
1177
1178                         case DEBUGSW:
1179                                 debugsw++;  /* fall */
1180                         case NFILTSW:
1181                         case FRMTSW:
1182                         case NFRMTSW:
1183                         case BITSTUFFSW:
1184                         case NBITSTUFFSW:
1185                         case MIMESW:
1186                         case NMIMESW:
1187                         case MSGDSW:
1188                         case NMSGDSW:
1189                         case WATCSW:
1190                         case NWATCSW:
1191                         case MAILSW:
1192                         case SAMLSW:
1193                         case SSNDSW:
1194                         case SOMLSW:
1195                         case SNOOPSW:
1196                                 vec[vecp++] = --cp;
1197                                 continue;
1198
1199                         case ALIASW:
1200                         case FILTSW:
1201                         case WIDTHSW:
1202                         case CLIESW:
1203                         case SERVSW:
1204                         case PORTSW:
1205                                 vec[vecp++] = --cp;
1206                                 if (!(cp = *argp++) || *cp == '-') {
1207                                         advise(NULL, "missing argument to %s",
1208                                                         argp[-2]);
1209                                         return;
1210                                 }
1211                                 vec[vecp++] = cp;
1212                                 continue;
1213
1214                         case SNDATTACHSW:
1215                                 if (!(attach = *argp++) || *attach == '-') {
1216                                         advise(NULL, "missing argument to %s",
1217                                                         argp[-2]);
1218                                         return;
1219                                 }
1220                                 continue;
1221
1222                         case SNDATTACHFORMAT:
1223                                 if (! *argp || **argp == '-')
1224                                         adios(NULL, "missing argument to %s",
1225                                                         argp[-1]);
1226                                 else {
1227                                         attachformat = atoi(*argp);
1228                                         if (attachformat < 0 || attachformat > ATTACHFORMATS - 1) {
1229                                                 advise(NULL, "unsupported attachformat %d", attachformat);
1230                                                 continue;
1231                                         }
1232                                 }
1233                                 ++argp;
1234                                 continue;
1235                         }
1236                 }
1237                 advise(NULL, "usage: %s [switches]", sp);
1238                 return;
1239         }
1240
1241         /* allow Aliasfile: profile entry */
1242         if ((cp = context_find("Aliasfile"))) {
1243                 char **ap, *dp;
1244
1245                 dp = getcpy(cp);
1246                 for (ap = brkstring(dp, " ", "\n"); ap && *ap; ap++) {
1247                         vec[vecp++] = "-alias";
1248                         vec[vecp++] = *ap;
1249                 }
1250         }
1251
1252         if ((cp = getenv("SIGNATURE")) == NULL || *cp == 0)
1253                 if ((cp = context_find("signature")) && *cp)
1254                         m_putenv("SIGNATURE", cp);
1255 #ifdef UCI
1256                 else {
1257                         snprintf(buf, sizeof(buf), "%s/.signature", mypath);
1258                         if ((fp = fopen(buf, "r")) != NULL &&
1259                                         fgets(buf, sizeof(buf), fp) != NULL) {
1260                                 fclose(fp);
1261                                 if (cp = strchr(buf, '\n'))
1262                                         *cp = 0;
1263                                 m_putenv("SIGNATURE", buf);
1264                         }
1265                 }
1266 #endif /* UCI */
1267
1268         if ((annotext = getenv("mhannotate")) == NULL || *annotext == 0)
1269                 annotext = NULL;
1270         if ((altmsg = getenv("mhaltmsg")) == NULL || *altmsg == 0)
1271                 altmsg = NULL;
1272         if (annotext && ((cp = getenv("mhinplace")) != NULL && *cp != 0))
1273                 inplace = atoi(cp);
1274
1275         if ((cp = getenv("mhdist")) && *cp
1276 #ifndef lint
1277                         && (distsw = atoi (cp))
1278 #endif /* not lint */
1279                         && altmsg) {
1280                 vec[vecp++] = "-dist";
1281                 distfile = getcpy(m_mktemp2(altmsg, invo_name, NULL, NULL));
1282                 if (link(altmsg, distfile) == NOTOK)
1283                         adios(distfile, "unable to link %s to", altmsg);
1284         } else {
1285                 distfile = NULL;
1286         }
1287
1288         if (altmsg == NULL || stat(altmsg, &st) == NOTOK) {
1289                 st.st_mtime = 0;
1290                 st.st_dev = 0;
1291                 st.st_ino = 0;
1292         }
1293         if ((pushsw = pushed))
1294                 push();
1295
1296         vec[0] = mhbasename(postproc);
1297         closefds(3);
1298
1299         if (sendsbr(vec, vecp, file, &st, 1, attach, attachformat) == OK)
1300                 done(0);
1301 }
1302
1303
1304 /*
1305 ** Remove the draft file
1306 */
1307
1308 static int
1309 removefile(char *drft)
1310 {
1311         if (unlink(drft) == NOTOK)
1312                 adios(drft, "unable to unlink");
1313
1314         return OK;
1315 }