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

   1 /*
   2 ** whatnow.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 **  The inclusion of attachments is eased by
   9 **  using the header field name mechanism added to anno and send.
  10 **  The header field name for attachments is predefined.
  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         { NULL, 0 }
  58 };
  59
  60 /*
  61 ** Options at the "whatnow" prompt
  62 */
  63 static struct swit aleqs[] = {
  64 #define EDITSW  0
  65         { "edit [<editor> <switches>]", 0 },
  66 #define REFILEOPT  1
  67         { "refile [<switches>] +folder", 0 },
  68 #define DISPSW  2
  69         { "display [<switches>]", 0 },
  70 #define LISTSW  3
  71         { "list [<switches>]", 0 },
  72 #define SENDSW  4
  73         { "send [<switches>]", 0 },
  74 #define PUSHSW  5
  75         { "push [<switches>]", 0 },
  76 #define QUITSW  6
  77         { "quit", 0 },
  78 #define DELETESW  7
  79         { "delete", 0 },
  80 #define CDCMDSW  8
  81         { "cd [directory]", 0 },
  82 #define PWDCMDSW  9
  83         { "pwd", 0 },
  84 #define LSCMDSW  10
  85         { "ls", 0 },
  86 #define ATTACHCMDSW  11
  87         { "attach", 0 },
  88 #define DETACHCMDSW  12
  89         { "detach [-n]", 2 },
  90 #define ALISTCMDSW  13
  91         { "alist [-ln] ", 2 },
  92         { NULL, 0 }
  93 };
  94
  95 static char *myprompt = "\nWhat now? ";
  96
  97 /*
  98 ** static prototypes
  99 */
 100 static int editfile(char **, char **, char *, int, struct msgs *,
 101         char *, char *, int);
 102 static int sendfile(char **, char *, int);
 103 static int removefile(char *);
 104 static void writelscmd(char *, int, char **);
 105 static void writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp);
 106 static FILE* popen_in_dir(const char *dir, const char *cmd, const char *type);
 107 static int system_in_dir(const char *dir, const char *cmd);
 108
 109
 110 #ifdef HAVE_LSTAT
 111 static int copyf(char *, char *);
 112 #endif
 113
 114
 115 int
 116 main(int argc, char **argv)
 117 {
 118         int nedit = 0, use = 0;
 119         char *cp;
 120         char *ed = NULL, *drft = NULL, *msgnam = NULL;
 121         char buf[BUFSIZ], prompt[BUFSIZ];
 122         char **argp, **arguments;
 123         struct stat st;
 124         char cwd[MAXPATHLEN + 1];  /* current working directory */
 125         char file[MAXPATHLEN + 1];  /* file name buffer */
 126         char shell[MAXPATHLEN + 1];  /* shell response buffer */
 127         FILE *f;  /* read pointer for bgnd proc */
 128         char *l;  /* set on -l to alist  command */
 129         int n;  /* set on -n to alist command */
 130
 131 #ifdef LOCALE
 132         setlocale(LC_ALL, "");
 133 #endif
 134
 135         invo_name = mhbasename(argv[0]);
 136
 137         /* read user profile/context */
 138         context_read();
 139
 140         arguments = getarguments(invo_name, argc, argv, 1);
 141         argp = arguments;
 142
 143         /*
 144         ** Get the initial current working directory.
 145         */
 146
 147         if (getcwd(cwd, sizeof (cwd)) == NULL) {
 148                 adios("getcwd", "could not get working directory");
 149         }
 150
 151         while ((cp = *argp++)) {
 152                 if (*cp == '-') {
 153                         switch (smatch(++cp, whatnowswitches)) {
 154                         case AMBIGSW:
 155                                 ambigsw(cp, whatnowswitches);
 156                                 done(1);
 157                         case UNKWNSW:
 158                                 adios(NULL, "-%s unknown", cp);
 159
 160                         case HELPSW:
 161                                 snprintf(buf, sizeof(buf),
 162                                                 "%s [switches] [file]",
 163                                                 invo_name);
 164                                 print_help(buf, whatnowswitches, 1);
 165                                 done(1);
 166                         case VERSIONSW:
 167                                 print_version(invo_name);
 168                                 done(1);
 169
 170                         case EDITRSW:
 171                                 if (!(ed = *argp++) || *ed == '-')
 172                                         adios(NULL, "missing argument to %s",
 173                                                         argp[-2]);
 174                                 nedit = 0;
 175                                 continue;
 176                         case NEDITSW:
 177                                 nedit++;
 178                                 continue;
 179
 180                         case PRMPTSW:
 181                                 if (!(myprompt = *argp++) || *myprompt == '-')
 182                                         adios(NULL, "missing argument to %s",
 183                                                         argp[-2]);
 184                                 continue;
 185
 186                         }
 187                 }
 188                 if (drft)
 189                         adios(NULL, "only one draft at a time!");
 190                 else
 191                         drft = cp;
 192         }
 193
 194         if ((drft == NULL && (drft = getenv("mhdraft")) == NULL) || *drft == 0)
 195                 drft = getcpy(m_draft(seq_cur));
 196
 197         msgnam = (cp = getenv("mhaltmsg")) && *cp ? getcpy(cp) : NULL;
 198
 199         if ((cp = getenv("mhuse")) && *cp)
 200                 use = atoi(cp);
 201
 202         if (ed == NULL && ((ed = getenv("mheditor")) == NULL || *ed == 0)) {
 203                 ed = NULL;
 204                 nedit++;
 205         }
 206
 207         /* start editing the draft, unless -noedit was given */
 208         if (!nedit && editfile(&ed, NULL, drft, use, NULL, msgnam, NULL, 1)
 209                         < 0)
 210                 done(1);
 211
 212         snprintf(prompt, sizeof(prompt), myprompt, invo_name);
 213         for (;;) {
 214                 if (!(argp = getans(prompt, aleqs))) {
 215                         unlink(altmsglink);
 216                         done(1);
 217                 }
 218                 switch (smatch(*argp, aleqs)) {
 219                 case DISPSW:
 220                         /* display the msg being replied to or distributed */
 221                         if (msgnam)
 222                                 showfile(++argp, msgnam);
 223                         else
 224                                 advise(NULL, "no alternate message to display");
 225                         break;
 226
 227                 case EDITSW:
 228                         /* Call an editor on the draft file */
 229                         if (*++argp)
 230                                 ed = *argp++;
 231                         if (editfile(&ed, argp, drft, NOUSE, NULL,
 232                                         msgnam, NULL, 1) == NOTOK)
 233                                 done(1);
 234                         break;
 235
 236                 case LISTSW:
 237                         /* display the draft file */
 238                         showfile(++argp, drft);
 239                         break;
 240
 241                 case QUITSW:
 242                         /* quit */
 243                         if (stat(drft, &st) != NOTOK) {
 244                                 advise(NULL, "draft left on %s", drft);
 245                         }
 246                         done(1);
 247
 248                 case DELETESW:
 249                         /* Delete draft and exit */
 250                         removefile(drft);
 251                         done(1);
 252
 253                 case PUSHSW:
 254                         /* Send draft in background */
 255                         if (sendfile(++argp, drft, 1))
 256                                 done(1);
 257                         break;
 258
 259                 case SENDSW:
 260                         /* Send draft */
 261                         sendfile(++argp, drft, 0);
 262                         break;
 263
 264                 case REFILEOPT:
 265                         /* Refile the draft */
 266                         if (refile(++argp, drft) == 0)
 267                                 done(0);
 268                         break;
 269
 270                 case CDCMDSW:
 271                         /*
 272                         ** Change the working directory for attachments
 273                         **
 274                         ** Run the directory through the user's shell
 275                         ** so that we can take advantage of any syntax
 276                         ** that the user is accustomed to.  Read back
 277                         ** the absolute path.
 278                         */
 279
 280                         if (*(argp+1) == NULL) {
 281                                 sprintf(buf, "$SHELL -c \"cd;pwd\"");
 282                         } else {
 283                                 writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
 284                         }
 285                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 286                                 fgets(cwd, sizeof (cwd), f);
 287
 288                                 if (strchr(cwd, '\n') != NULL)
 289                                                 *strchr(cwd, '\n') = '\0';
 290
 291                                 pclose(f);
 292                         } else {
 293                                 advise("popen", "could not get directory");
 294                         }
 295
 296                         break;
 297
 298                 case PWDCMDSW:
 299                         /* Print the working directory for attachments */
 300                         printf("%s\n", cwd);
 301                         break;
 302
 303                 case LSCMDSW:
 304                         /*
 305                         ** List files in the current attachment working
 306                         ** directory
 307                         **
 308                         ** Use the user's shell so that we can take
 309                         ** advantage of any syntax that the user is
 310                         ** accustomed to.
 311                         */
 312                         writelscmd(buf, sizeof(buf), argp);
 313                         system_in_dir(cwd, buf);
 314                         break;
 315
 316                 case ALISTCMDSW:
 317                         /*
 318                         ** List attachments on current draft.  Options are:
 319                         **
 320                         ** -l    long listing (full path names)
 321                         ** -n    numbers listing
 322                         */
 323
 324                         l = NULL;
 325                         n = 0;
 326
 327                         while (*++argp != NULL) {
 328                                 if (strcmp(*argp, "-l") == 0)
 329                                         l = "/";
 330
 331                                 else if (strcmp(*argp, "-n") == 0)
 332                                         n = 1;
 333
 334                                 else if (strcmp(*argp, "-ln") == 0 ||
 335                                                 strcmp(*argp, "-nl") == 0) {
 336                                         l = "/";
 337                                         n = 1;
 338                                 } else {
 339                                         n = -1;
 340                                         break;
 341                                 }
 342                         }
 343
 344                         if (n == -1)
 345                                 advise(NULL, "usage is alist [-ln].");
 346
 347                         else
 348                                 annolist(drft, attach_hdr, l, n);
 349
 350                         break;
 351
 352                 case ATTACHCMDSW:
 353                         /*
 354                         ** Attach files to current draft.
 355                         */
 356
 357                         if (*(argp+1) == NULL) {
 358                                 advise(NULL, "attach command requires file argument(s).");
 359                                 break;
 360                         }
 361
 362                         /*
 363                         ** Build a command line that causes the user's
 364                         ** shell to list the file name arguments.
 365                         ** This handles and wildcard expansion, tilde
 366                         ** expansion, etc.
 367                         */
 368                         writelscmd(buf, sizeof(buf), argp);
 369
 370                         /*
 371                         ** Read back the response from the shell,
 372                         ** which contains a number of lines with one
 373                         ** file name per line.  Remove off the newline.
 374                         ** Determine whether we have an absolute or
 375                         ** relative path name.  Prepend the current
 376                         ** working directory to relative path names.
 377                         ** Add the attachment annotation to the draft.
 378                         */
 379                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 380                                 while (fgets(shell, sizeof (shell), f)
 381                                                 != NULL) {
 382                                         *(strchr(shell, '\n')) = '\0';
 383
 384                                         if (*shell == '/')
 385                                                 annotate(drft, attach_hdr,
 386                                                                 shell, 0,
 387                                                                 -2, 1);
 388                                         else {
 389                                                 sprintf(file, "%s/%s", cwd,
 390                                                                 shell);
 391                                                 annotate(drft, attach_hdr,
 392                                                                 file, 0,
 393                                                                 -2, 1);
 394                                         }
 395                                 }
 396
 397                                 pclose(f);
 398                         } else {
 399                                 advise("popen", "could not get file from shell");
 400                         }
 401
 402                         break;
 403
 404                 case DETACHCMDSW:
 405                         /*
 406                         ** Detach files from current draft.
 407                         **
 408                         ** Scan the arguments for a -n.  Mixed file
 409                         ** names and numbers aren't allowed, so this
 410                         ** catches a -n anywhere in the argument list.
 411                         */
 412
 413                         for (n = 0, arguments = argp + 1;
 414                                         *arguments != NULL;
 415                                         arguments++) {
 416                                 if (strcmp(*arguments, "-n") == 0) {
 417                                                 n = 1;
 418                                                 break;
 419                                 }
 420                         }
 421
 422                         /*
 423                         ** A -n was found so interpret the arguments as
 424                         ** attachment numbers.  Decrement any remaining
 425                         ** argument number that is greater than the one
 426                         ** just processed after processing each one so
 427                         ** that the numbering stays correct.
 428                         */
 429
 430                         if (n == 1) {
 431                                 for (arguments = argp + 1;
 432                                                 *arguments != NULL;
 433                                                 arguments++) {
 434                                         if (strcmp(*arguments, "-n") == 0)
 435                                                 continue;
 436
 437                                         if (**arguments != '\0') {
 438                                                 n = atoi(*arguments);
 439                                                 annotate(drft, attach_hdr,
 440                                                                 NULL, 0,
 441                                                                 n, 1);
 442
 443                                                 for (argp = arguments + 1; *argp != NULL; argp++) {
 444                                                         if (atoi(*argp) > n) {
 445                                                                 if (atoi(*argp) == 1)
 446                                                                         *argp = "";
 447                                                                 else
 448                                                                         sprintf(*argp, "%d", atoi(*argp) - 1);
 449                                                         }
 450                                                 }
 451                                         }
 452                                 }
 453                         }
 454
 455                         /*
 456                         ** The arguments are interpreted as file names.
 457                         ** Run them through the user's shell for wildcard
 458                         ** expansion and other goodies.  Do this from
 459                         ** the current working directory if the argument
 460                         ** is not an absolute path name (does not begin
 461                         ** with a /).
 462                         **
 463                         ** We feed all the file names to the shell at
 464                         ** once, otherwise you can't provide a file name
 465                         ** with a space in it.
 466                         */
 467                         writelscmd(buf, sizeof(buf), argp);
 468                         if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 469                                 while (fgets(shell, sizeof (shell), f)
 470                                                 != NULL) {
 471                                         *(strchr(shell, '\n')) = '\0';
 472                                         annotate(drft, attach_hdr, shell,
 473                                                         0, 0, 1);
 474                                 }
 475                                 pclose(f);
 476                         } else {
 477                                 advise("popen", "could not get file from shell");
 478                         }
 479
 480                         break;
 481
 482                 default:
 483                         /* Unknown command */
 484                         advise(NULL, "say what?");
 485                         break;
 486                 }
 487         }
 488         /*NOTREACHED*/
 489 }
 490
 491
 492
 493 /*
 494 ** Build a command line of the form $SHELL -c "cd 'cwd'; cmd argp ... ;
 495 ** trailcmd".
 496 */
 497 static void
 498 writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
 499 {
 500         char *cp;
 501         /*
 502         ** Note that we do not quote -- the argp from the user
 503         ** is assumed to be quoted as they desire. (We can't treat
 504         ** it as pure literal as that would prevent them using ~,
 505         ** wildcards, etc.) The buffer produced by this function
 506         ** should be given to popen_in_dir() or system_in_dir() so
 507         ** that the current working directory is set correctly.
 508         */
 509         int ln = snprintf(buf, bufsz, "$SHELL -c \"%s", cmd);
 510         /*
 511         ** NB that some snprintf() return -1 on overflow rather than the
 512         ** new C99 mandated 'number of chars that would have been written'
 513         */
 514         /*
 515         ** length checks here and inside the loop allow for the
 516         ** trailing ';', trailcmd, '"' and NUL
 517         */
 518         int trailln = strlen(trailcmd) + 3;
 519         if (ln < 0 || ln + trailln > bufsz)
 520                 adios(NULL, "arguments too long");
 521
 522         cp = buf + ln;
 523
 524         while (*++argp != NULL) {
 525                 ln = strlen(*argp);
 526                 /* +1 for leading space */
 527                 if (ln + trailln + 1 > bufsz - (cp-buf))
 528                         adios(NULL, "arguments too long");
 529                 *cp++ = ' ';
 530                 memcpy(cp, *argp, ln+1);
 531                 cp += ln;
 532         }
 533         if (*trailcmd) {
 534                 *cp++ = ';';
 535                 strcpy(cp, trailcmd);
 536                 cp += trailln - 3;
 537         }
 538         *cp++ = '"';
 539         *cp = 0;
 540 }
 541
 542 /*
 543 ** Build a command line that causes the user's shell to list the file name
 544 ** arguments.  This handles and wildcard expansion, tilde expansion, etc.
 545 */
 546 static void
 547 writelscmd(char *buf, int bufsz, char **argp)
 548 {
 549         writesomecmd(buf, bufsz, "ls", "", argp);
 550 }
 551
 552 /*
 553 ** Like system(), but run the command in directory dir.
 554 ** This assumes the program is single-threaded!
 555 */
 556 static int
 557 system_in_dir(const char *dir, const char *cmd)
 558 {
 559         char olddir[BUFSIZ];
 560         int r;
 561         if (getcwd(olddir, sizeof(olddir)) == 0)
 562                 adios("getcwd", "could not get working directory");
 563         if (chdir(dir) != 0)
 564                 adios("chdir", "could not change working directory");
 565         r = system(cmd);
 566         if (chdir(olddir) != 0)
 567                 adios("chdir", "could not change working directory");
 568         return r;
 569 }
 570
 571 /* ditto for popen() */
 572 static FILE*
 573 popen_in_dir(const char *dir, const char *cmd, const char *type)
 574 {
 575         char olddir[BUFSIZ];
 576         FILE *f;
 577         if (getcwd(olddir, sizeof(olddir)) == 0)
 578                 adios("getcwd", "could not get working directory");
 579         if (chdir(dir) != 0)
 580                 adios("chdir", "could not change working directory");
 581         f = popen(cmd, type);
 582         if (chdir(olddir) != 0)
 583                 adios("chdir", "could not change working directory");
 584         return f;
 585 }
 586
 587
 588 /*
 589 ** EDIT
 590 */
 591
 592 static int  reedit = 0;  /* have we been here before? */
 593 static char *edsave = NULL;  /* the editor we used previously */
 594
 595
 596 static int
 597 editfile(char **ed, char **arg, char *file, int use, struct msgs *mp,
 598         char *altmsg, char *cwd, int save_editor)
 599 {
 600         int pid, status, vecp;
 601         char altpath[BUFSIZ], linkpath[BUFSIZ];
 602         char *cp, *vec[MAXARGS];
 603         struct stat st;
 604
 605 #ifdef HAVE_LSTAT
 606         int slinked = 0;
 607 #endif /* HAVE_LSTAT */
 608
 609         /* Was there a previous edit session? */
 610         if (reedit) {
 611                 if (!*ed) {  /* no explicit editor */
 612                         *ed = edsave;  /* so use the previous one */
 613                         if ((cp = mhbasename(*ed)) == NULL)
 614                                 cp = *ed;
 615
 616                         /* unless we've specified it via "editor-next" */
 617                         cp = concat(cp, "-next", NULL);
 618                         if ((cp = context_find(cp)) != NULL)
 619                                 *ed = cp;
 620                 }
 621         } else {
 622                 /* set initial editor */
 623                 if (*ed == NULL && (*ed = context_find("editor")) == NULL)
 624                         *ed = defaulteditor;
 625         }
 626
 627         if (altmsg) {
 628                 if (mp == NULL || *altmsg == '/' || cwd == NULL)
 629                         strncpy(altpath, altmsg, sizeof(altpath));
 630                 else
 631                         snprintf(altpath, sizeof(altpath), "%s/%s",
 632                                         mp->foldpath, altmsg);
 633                 if (cwd == NULL)
 634                         strncpy(linkpath, altmsglink, sizeof(linkpath));
 635                 else
 636                         snprintf(linkpath, sizeof(linkpath), "%s/%s",
 637                                         cwd, altmsglink);
 638         }
 639
 640         if (altmsg) {
 641                 unlink(linkpath);
 642 #ifdef HAVE_LSTAT
 643                 if (link(altpath, linkpath) == NOTOK) {
 644                         symlink(altpath, linkpath);
 645                         slinked = 1;
 646                 } else {
 647                         slinked = 0;
 648                 }
 649 #else /* not HAVE_LSTAT */
 650                 link(altpath, linkpath);
 651 #endif /* not HAVE_LSTAT */
 652         }
 653
 654         context_save();  /* save the context file */
 655         fflush(stdout);
 656
 657         switch (pid = fork()) {
 658         case NOTOK:
 659                 advise("fork", "unable to");
 660                 status = NOTOK;
 661                 break;
 662
 663         case OK:
 664                 if (cwd)
 665                         chdir(cwd);
 666                 if (altmsg) {
 667                         if (mp)
 668                                 m_putenv("mhfolder", mp->foldpath);
 669                         m_putenv("editalt", altpath);
 670                 }
 671
 672                 vecp = 0;
 673                 vec[vecp++] = mhbasename(*ed);
 674                 if (arg)
 675                         while (*arg)
 676                                 vec[vecp++] = *arg++;
 677                 vec[vecp++] = file;
 678                 vec[vecp] = NULL;
 679
 680                 execvp(*ed, vec);
 681                 fprintf(stderr, "unable to exec ");
 682                 perror(*ed);
 683                 _exit(-1);
 684
 685         default:
 686                 if ((status = pidwait(pid, NOTOK))) {
 687                         if (((status & 0xff00) != 0xff00)
 688                                 && (!reedit || (status & 0x00ff))) {
 689                                 if (!use && (status & 0xff00) && (rename(file, cp = m_backup (file)) != NOTOK)) {
 690                                         advise(NULL, "problems with edit--draft left in %s", cp);
 691                                 } else {
 692                                         advise(NULL, "problems with edit--%s preserved", file);
 693                                 }
 694                         }
 695                         status = -2;  /* maybe "reedit ? -2 : -1"? */
 696                         break;
 697                 }
 698
 699                 reedit++;
 700 #ifdef HAVE_LSTAT
 701                 if (altmsg && mp && !is_readonly(mp) && (slinked ?
 702                                 lstat (linkpath, &st) != NOTOK &&
 703                                 S_ISREG(st.st_mode) &&
 704                                 copyf(linkpath, altpath) == NOTOK :
 705                                 stat(linkpath, &st) != NOTOK &&
 706                                 st.st_nlink == 1 &&
 707                                 (unlink(altpath) == NOTOK ||
 708                                 link(linkpath, altpath) == NOTOK)))
 709                         advise(linkpath, "unable to update %s from", altmsg);
 710 #else /* HAVE_LSTAT */
 711                 if (altmsg && mp && !is_readonly(mp) &&
 712                                 stat(linkpath, &st) != NOTOK &&
 713                                 st.st_nlink == 1 &&
 714                                 (unlink(altpath) == NOTOK ||
 715                                 link(linkpath, altpath) == NOTOK))
 716                         advise(linkpath, "unable to update %s from", altmsg);
 717 #endif /* HAVE_LSTAT */
 718         }
 719
 720         /* normally, we remember which editor we used */
 721         if (save_editor)
 722                 edsave = getcpy(*ed);
 723
 724         *ed = NULL;
 725         if (altmsg)
 726                 unlink(linkpath);
 727
 728         return status;
 729 }
 730
 731
 732 #ifdef HAVE_LSTAT
 733 static int
 734 copyf(char *ifile, char *ofile)
 735 {
 736         int i, in, out;
 737         char buffer[BUFSIZ];
 738
 739         if ((in = open(ifile, O_RDONLY)) == NOTOK)
 740                 return NOTOK;
 741         if ((out = open(ofile, O_WRONLY | O_TRUNC)) == NOTOK) {
 742                 admonish(ofile, "unable to open and truncate");
 743                 close(in);
 744                 return NOTOK;
 745         }
 746
 747         while ((i = read(in, buffer, sizeof(buffer))) > OK)
 748                 if (write(out, buffer, i) != i) {
 749                         advise(ofile, "may have damaged");
 750                         i = NOTOK;
 751                         break;
 752                 }
 753
 754         close(in);
 755         close(out);
 756         return i;
 757 }
 758 #endif /* HAVE_LSTAT */
 759
 760
 761 /*
 762 ** SEND
 763 */
 764
 765 static int
 766 sendfile(char **arg, char *file, int pushsw)
 767 {
 768         pid_t child_id;
 769         int i, vecp;
 770         char *vec[MAXARGS];
 771
 772         context_save();  /* save the context file */
 773         fflush(stdout);
 774
 775         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 776                 sleep(5);
 777         switch (child_id) {
 778         case NOTOK:
 779                 advise(NULL, "unable to fork, so sending directly...");
 780                 /* fall */
 781         case OK:
 782                 vecp = 0;
 783                 vec[vecp++] = invo_name;
 784                 if (pushsw)
 785                         vec[vecp++] = "-push";
 786                 if (arg)
 787                         while (*arg)
 788                                 vec[vecp++] = *arg++;
 789                 vec[vecp++] = file;
 790                 vec[vecp] = NULL;
 791
 792                 execvp(sendproc, vec);
 793                 fprintf(stderr, "unable to exec ");
 794                 perror(sendproc);
 795                 _exit(-1);
 796
 797         default:
 798                 if (pidwait(child_id, OK) == 0)
 799                         done(0);
 800                 return 1;
 801         }
 802 }
 803
 804
 805 /*
 806 ** Remove the draft file
 807 */
 808
 809 static int
 810 removefile(char *drft)
 811 {
 812         if (unlink(drft) == NOTOK)
 813                 adios(drft, "unable to unlink");
 814
 815         return OK;
 816 }