diplodocus.org Git - nmh/blob - uip/whatnowsbr.c

   1
   2 /*
   3  * whatnowsbr.c -- the WhatNow shell
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  *
   9  *  Several options have been added to ease the inclusion of attachments
  10  *  using the header field name mechanism added to anno and send.  The
  11  *  -attach option is used to specify the header field name for attachments.
  12  *
  13  *  Several commands have been added at the whatnow prompt:
  14  *
  15  *      cd [ directory ]        This option works just like the shell's
  16  *                              cd command and lets the user change the
  17  *                              directory from which attachments are
  18  *                              taken so that long path names are not
  19  *                              needed with every file.
  20  *
  21  *      ls [ ls-options ]       This option works just like the normal
  22  *                              ls command and exists to allow the user
  23  *                              to verify file names in the directory.
  24  *
  25  *      pwd                     This option works just like the normal
  26  *                              pwd command and exists to allow the user
  27  *                              to verify the directory.
  28  *
  29  *      attach files            This option attaches the named files to
  30  *                              the draft.
  31  *
  32  *      alist [-ln]             This option lists the attachments on the
  33  *                              draft.  -l gets long listings, -n gets
  34  *                              numbered listings.
  35  *
  36  *      detach files            This option removes attachments from the
  37  *      detach -n numbers       draft.  This can be done by file name or
  38  *                              by attachment number.
  39  */
  40
  41 #include <h/mh.h>
  42 #include <fcntl.h>
  43 #include <signal.h>
  44 #include <h/mime.h>
  45 #include <h/utils.h>
  46
  47 static struct swit whatnowswitches[] = {
  48 #define DFOLDSW                 0
  49     { "draftfolder +folder", 0 },
  50 #define DMSGSW                  1
  51     { "draftmessage msg", 0 },
  52 #define NDFLDSW                 2
  53     { "nodraftfolder", 0 },
  54 #define EDITRSW                 3
  55     { "editor editor", 0 },
  56 #define NEDITSW                 4
  57     { "noedit", 0 },
  58 #define PRMPTSW                 5
  59     { "prompt string", 4 },
  60 #define VERSIONSW               6
  61     { "version", 0 },
  62 #define HELPSW                  7
  63     { "help", 0 },
  64 #define ATTACHSW                8
  65     { "attach header-field-name", 0 },
  66 #define NOATTACHSW              9
  67     { "noattach", 0 },
  68     { NULL, 0 }
  69 };
  70
  71 /*
  72  * Options at the "whatnow" prompt
  73  */
  74 static struct swit aleqs[] = {
  75 #define EDITSW                         0
  76     { "edit [<editor> <switches>]", 0 },
  77 #define REFILEOPT                      1
  78     { "refile [<switches>] +folder", 0 },
  79 #define BUILDMIMESW                    2
  80     { "mime [<switches>]", 0 },
  81 #define DISPSW                         3
  82     { "display [<switches>]", 0 },
  83 #define LISTSW                         4
  84     { "list [<switches>]", 0 },
  85 #define SENDSW                         5
  86     { "send [<switches>]", 0 },
  87 #define PUSHSW                         6
  88     { "push [<switches>]", 0 },
  89 #define WHOMSW                         7
  90     { "whom [<switches>]", 0 },
  91 #define QUITSW                         8
  92     { "quit [-delete]", 0 },
  93 #define DELETESW                       9
  94     { "delete", 0 },
  95 #define CDCMDSW                       10
  96     { "cd [directory]", 0 },
  97 #define PWDCMDSW                      11
  98     { "pwd", 0 },
  99 #define LSCMDSW                       12
 100     { "ls", 0 },
 101 #define ATTACHCMDSW                   13
 102     { "attach", 0 },
 103 #define DETACHCMDSW                   14
 104     { "detach [-n]", 2 },
 105 #define ALISTCMDSW                    15
 106     { "alist [-ln] ", 2 },
 107     { NULL, 0 }
 108 };
 109
 110 static char *myprompt = "\nWhat now? ";
 111
 112 /*
 113  * static prototypes
 114  */
 115 static int editfile (char **, char **, char *, int, struct msgs *,
 116         char *, char *, int);
 117 static int sendfile (char **, char *, int);
 118 static void sendit (char *, char **, char *, int);
 119 static int buildfile (char **, char *);
 120 static int check_draft (char *);
 121 static int whomfile (char **, char *);
 122 static int removefile (char *);
 123 static void writelscmd(char *, int, char **);
 124 static void writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp);
 125 static FILE* popen_in_dir(const char *dir, const char *cmd, const char *type);
 126 static int system_in_dir(const char *dir, const char *cmd);
 127
 128
 129 #ifdef HAVE_LSTAT
 130 static int copyf (char *, char *);
 131 #endif
 132
 133
 134 int
 135 WhatNow (int argc, char **argv)
 136 {
 137     int isdf = 0, nedit = 0, use = 0;
 138     char *cp, *dfolder = NULL, *dmsg = NULL;
 139     char *ed = NULL, *drft = NULL, *msgnam = NULL;
 140     char buf[BUFSIZ], prompt[BUFSIZ];
 141     char **argp, **arguments;
 142     struct stat st;
 143     char        *attach = NMH_ATTACH_HEADER;/* attachment header field name */
 144     char        cwd[MAXPATHLEN + 1];    /* current working directory */
 145     char        file[MAXPATHLEN + 1];   /* file name buffer */
 146     char        shell[MAXPATHLEN + 1];  /* shell response buffer */
 147     FILE        *f;                     /* read pointer for bgnd proc */
 148     char        *l;                     /* set on -l to alist  command */
 149     int         n;                      /* set on -n to alist command */
 150
 151     invo_name = r1bindex (argv[0], '/');
 152
 153     /* read user profile/context */
 154     context_read();
 155
 156     arguments = getarguments (invo_name, argc, argv, 1);
 157     argp = arguments;
 158
 159     /*
 160      *  Get the initial current working directory.
 161      */
 162
 163     if (getcwd(cwd, sizeof (cwd)) == (char *)0) {
 164         adios("getcwd", "could not get working directory");
 165     }
 166
 167     while ((cp = *argp++)) {
 168         if (*cp == '-') {
 169             switch (smatch (++cp, whatnowswitches)) {
 170             case AMBIGSW:
 171                 ambigsw (cp, whatnowswitches);
 172                 done (1);
 173             case UNKWNSW:
 174                 adios (NULL, "-%s unknown", cp);
 175
 176             case HELPSW:
 177                 snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 178                 print_help (buf, whatnowswitches, 1);
 179                 done (1);
 180             case VERSIONSW:
 181                 print_version(invo_name);
 182                 done (1);
 183
 184             case DFOLDSW:
 185                 if (dfolder)
 186                     adios (NULL, "only one draft folder at a time!");
 187                 if (!(cp = *argp++) || *cp == '-')
 188                     adios (NULL, "missing argument to %s", argp[-2]);
 189                 dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 190                                 *cp != '@' ? TFOLDER : TSUBCWF);
 191                 continue;
 192             case DMSGSW:
 193                 if (dmsg)
 194                     adios (NULL, "only one draft message at a time!");
 195                 if (!(dmsg = *argp++) || *dmsg == '-')
 196                     adios (NULL, "missing argument to %s", argp[-2]);
 197                 continue;
 198             case NDFLDSW:
 199                 dfolder = NULL;
 200                 isdf = NOTOK;
 201                 continue;
 202
 203             case EDITRSW:
 204                 if (!(ed = *argp++) || *ed == '-')
 205                     adios (NULL, "missing argument to %s", argp[-2]);
 206                 nedit = 0;
 207                 continue;
 208             case NEDITSW:
 209                 nedit++;
 210                 continue;
 211
 212             case PRMPTSW:
 213                 if (!(myprompt = *argp++) || *myprompt == '-')
 214                     adios (NULL, "missing argument to %s", argp[-2]);
 215                 continue;
 216
 217             case ATTACHSW:
 218                 if (!(attach = *argp++) || *attach == '-')
 219                     adios (NULL, "missing argument to %s", argp[-2]);
 220                 continue;
 221
 222             case NOATTACHSW:
 223                 attach = NULL;
 224                 continue;
 225             }
 226         }
 227         if (drft)
 228             adios (NULL, "only one draft at a time!");
 229         else
 230             drft = cp;
 231     }
 232
 233     if ((drft == NULL && (drft = getenv ("mhdraft")) == NULL) || *drft == 0)
 234         drft = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 235
 236     msgnam = (cp = getenv ("mhaltmsg")) && *cp ? getcpy (cp) : NULL;
 237
 238     if ((cp = getenv ("mhuse")) && *cp)
 239         use = atoi (cp);
 240
 241     if (ed == NULL && ((ed = getenv ("mheditor")) == NULL || *ed == 0)) {
 242         ed = NULL;
 243         nedit++;
 244     }
 245
 246     /* start editing the draft, unless -noedit was given */
 247     if (!nedit && editfile (&ed, NULL, drft, use, NULL, msgnam, NULL, 1) < 0)
 248         done (1);
 249
 250     snprintf (prompt, sizeof(prompt), myprompt, invo_name);
 251     for (;;) {
 252         if (!(argp = getans (prompt, aleqs))) {
 253             unlink (LINK);
 254             done (1);
 255         }
 256         switch (smatch (*argp, aleqs)) {
 257         case DISPSW:
 258             /* display the message being replied to, or distributed */
 259             if (msgnam)
 260                 showfile (++argp, msgnam);
 261             else
 262                 advise (NULL, "no alternate message to display");
 263             break;
 264
 265         case BUILDMIMESW:
 266             /* Translate MIME composition file */
 267             buildfile (++argp, drft);
 268             break;
 269
 270         case EDITSW:
 271             /* Call an editor on the draft file */
 272             if (*++argp)
 273                 ed = *argp++;
 274             if (editfile (&ed, argp, drft, NOUSE, NULL, msgnam, NULL, 1) == NOTOK)
 275                 done (1);
 276             break;
 277
 278         case LISTSW:
 279             /* display the draft file */
 280             showfile (++argp, drft);
 281             break;
 282
 283         case WHOMSW:
 284             /* Check to whom the draft would be sent */
 285             whomfile (++argp, drft);
 286             break;
 287
 288         case QUITSW:
 289             /* Quit, and possibly delete the draft */
 290             if (*++argp && (*argp[0] == 'd' ||
 291                 ((*argp)[0] == '-' && (*argp)[1] == 'd'))) {
 292                 removefile (drft);
 293             } else {
 294                 if (stat (drft, &st) != NOTOK)
 295                     advise (NULL, "draft left on %s", drft);
 296             }
 297             done (1);
 298
 299         case DELETESW:
 300             /* Delete draft and exit */
 301             removefile (drft);
 302             done (1);
 303
 304         case PUSHSW:
 305             /* Send draft in background */
 306             if (sendfile (++argp, drft, 1))
 307                 done (1);
 308             break;
 309
 310         case SENDSW:
 311             /* Send draft */
 312             sendfile (++argp, drft, 0);
 313             break;
 314
 315         case REFILEOPT:
 316             /* Refile the draft */
 317             if (refile (++argp, drft) == 0)
 318                 done (0);
 319             break;
 320
 321         case CDCMDSW:
 322             /* Change the working directory for attachments
 323              *
 324              *  Run the directory through the user's shell so that
 325              *  we can take advantage of any syntax that the user
 326              *  is accustomed to.  Read back the absolute path.
 327              */
 328
 329             if (*(argp+1) == (char *)0) {
 330                 (void)sprintf(buf, "$SHELL -c \"cd;pwd\"");
 331             }
 332             else {
 333                 writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
 334             }
 335             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 336                 fgets(cwd, sizeof (cwd), f);
 337
 338                 if (strchr(cwd, '\n') != (char *)0)
 339                         *strchr(cwd, '\n') = '\0';
 340
 341                 pclose(f);
 342             }
 343             else {
 344                 advise("popen", "could not get directory");
 345             }
 346
 347             break;
 348
 349         case PWDCMDSW:
 350             /* Print the working directory for attachments */
 351             printf("%s\n", cwd);
 352             break;
 353
 354         case LSCMDSW:
 355             /* List files in the current attachment working directory
 356              *
 357              *  Use the user's shell so that we can take advantage of any
 358              *  syntax that the user is accustomed to.
 359              */
 360             writelscmd(buf, sizeof(buf), argp);
 361             (void)system_in_dir(cwd, buf);
 362             break;
 363
 364         case ALISTCMDSW:
 365             /*
 366              *  List attachments on current draft.  Options are:
 367              *
 368              *   -l     long listing (full path names)
 369              *   -n     numbers listing
 370              */
 371
 372             if (attach == (char *)0) {
 373                 advise((char *)0, "can't list because no header field name was given.");
 374                 break;
 375             }
 376
 377             l = (char *)0;
 378             n = 0;
 379
 380             while (*++argp != (char *)0) {
 381                 if (strcmp(*argp, "-l") == 0)
 382                     l = "/";
 383
 384                 else if (strcmp(*argp, "-n") == 0)
 385                     n = 1;
 386
 387                 else if (strcmp(*argp, "-ln") == 0 || strcmp(*argp, "-nl") == 0) {
 388                     l = "/";
 389                     n = 1;
 390                 }
 391
 392                 else {
 393                     n = -1;
 394                     break;
 395                 }
 396             }
 397
 398             if (n == -1)
 399                 advise((char *)0, "usage is alist [-ln].");
 400
 401             else
 402                 annolist(drft, attach, l, n);
 403
 404             break;
 405
 406         case ATTACHCMDSW:
 407             /*
 408              *  Attach files to current draft.
 409              */
 410
 411             if (attach == (char *)0) {
 412                 advise((char *)0, "can't attach because no header field name was given.");
 413                 break;
 414             }
 415
 416             if (*(argp+1) == (char *)0) {
 417                 advise((char *)0, "attach command requires file argument(s).");
 418                 break;
 419             }
 420
 421             /*
 422              *  Build a command line that causes the user's shell to list the file name
 423              *  arguments.  This handles and wildcard expansion, tilde expansion, etc.
 424              */
 425             writelscmd(buf, sizeof(buf), argp);
 426
 427             /*
 428              *  Read back the response from the shell, which contains a number of lines
 429              *  with one file name per line.  Remove off the newline.  Determine whether
 430              *  we have an absolute or relative path name.  Prepend the current working
 431              *  directory to relative path names.  Add the attachment annotation to the
 432              *  draft.
 433              */
 434
 435             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 436                 while (fgets(shell, sizeof (shell), f) != (char *)0) {
 437                     *(strchr(shell, '\n')) = '\0';
 438
 439                     if (*shell == '/')
 440                         (void)annotate(drft, attach, shell, 1, 0, -2, 1);
 441                     else {
 442                         (void)sprintf(file, "%s/%s", cwd, shell);
 443                         (void)annotate(drft, attach, file, 1, 0, -2, 1);
 444                     }
 445                 }
 446
 447                 pclose(f);
 448             }
 449             else {
 450                 advise("popen", "could not get file from shell");
 451             }
 452
 453             break;
 454
 455         case DETACHCMDSW:
 456             /*
 457              *  Detach files from current draft.
 458              */
 459
 460             if (attach == (char *)0) {
 461                 advise((char *)0, "can't detach because no header field name was given.");
 462                 break;
 463             }
 464
 465             /*
 466              *  Scan the arguments for a -n.  Mixed file names and numbers aren't allowed,
 467              *  so this catches a -n anywhere in the argument list.
 468              */
 469
 470             for (n = 0, arguments = argp + 1; *arguments != (char *)0; arguments++) {
 471                 if (strcmp(*arguments, "-n") == 0) {
 472                         n = 1;
 473                         break;
 474                 }
 475             }
 476
 477             /*
 478              *  A -n was found so interpret the arguments as attachment numbers.
 479              *  Decrement any remaining argument number that is greater than the one
 480              *  just processed after processing each one so that the numbering stays
 481              *  correct.
 482              */
 483
 484             if (n == 1) {
 485                 for (arguments = argp + 1; *arguments != (char *)0; arguments++) {
 486                     if (strcmp(*arguments, "-n") == 0)
 487                         continue;
 488
 489                     if (**arguments != '\0') {
 490                         n = atoi(*arguments);
 491                         (void)annotate(drft, attach, (char *)0, 1, 0, n, 1);
 492
 493                         for (argp = arguments + 1; *argp != (char *)0; argp++) {
 494                             if (atoi(*argp) > n) {
 495                                 if (atoi(*argp) == 1)
 496                                     *argp = "";
 497                                 else
 498                                     (void)sprintf(*argp, "%d", atoi(*argp) - 1);
 499                             }
 500                         }
 501                     }
 502                 }
 503             }
 504
 505             /*
 506              *  The arguments are interpreted as file names.  Run them through the
 507              *  user's shell for wildcard expansion and other goodies.  Do this from
 508              *  the current working directory if the argument is not an absolute path
 509              *  name (does not begin with a /).
 510              *
 511              * We feed all the file names to the shell at once, otherwise you can't
 512              * provide a file name with a space in it.
 513              */
 514             writelscmd(buf, sizeof(buf), argp);
 515             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 516                 while (fgets(shell, sizeof (shell), f) != (char *)0) {
 517                     *(strchr(shell, '\n')) = '\0';
 518                     (void)annotate(drft, attach, shell, 1, 0, 0, 1);
 519                 }
 520                 pclose(f);
 521             } else {
 522                 advise("popen", "could not get file from shell");
 523             }
 524
 525             break;
 526
 527         default:
 528             /* Unknown command */
 529             advise (NULL, "say what?");
 530             break;
 531         }
 532     }
 533     /*NOTREACHED*/
 534 }
 535
 536
 537
 538 /* Build a command line of the form $SHELL -c "cd 'cwd'; cmd argp ... ; trailcmd". */
 539 static void
 540 writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
 541 {
 542     char *cp;
 543     /* Note that we do not quote -- the argp from the user
 544      * is assumed to be quoted as they desire. (We can't treat
 545      * it as pure literal as that would prevent them using ~,
 546      * wildcards, etc.) The buffer produced by this function
 547      * should be given to popen_in_dir() or system_in_dir() so
 548      * that the current working directory is set correctly.
 549      */
 550     int ln = snprintf(buf, bufsz, "$SHELL -c \"%s", cmd);
 551     /* NB that some snprintf() return -1 on overflow rather than the
 552      * new C99 mandated 'number of chars that would have been written'
 553      */
 554     /* length checks here and inside the loop allow for the
 555      * trailing ';', trailcmd, '"' and NUL
 556      */
 557     int trailln = strlen(trailcmd) + 3;
 558     if (ln < 0 || ln + trailln > bufsz)
 559         adios((char *)0, "arguments too long");
 560
 561     cp = buf + ln;
 562
 563     while (*++argp != (char *)0) {
 564         ln = strlen(*argp);
 565         /* +1 for leading space */
 566         if (ln + trailln + 1 > bufsz - (cp-buf))
 567             adios((char *)0, "arguments too long");
 568         *cp++ = ' ';
 569         memcpy(cp, *argp, ln+1);
 570         cp += ln;
 571     }
 572     if (*trailcmd) {
 573         *cp++ = ';';
 574         strcpy(cp, trailcmd);
 575         cp += trailln - 3;
 576     }
 577     *cp++ = '"';
 578     *cp = 0;
 579 }
 580
 581 /*
 582  * Build a command line that causes the user's shell to list the file name
 583  * arguments.  This handles and wildcard expansion, tilde expansion, etc.
 584  */
 585 static void
 586 writelscmd(char *buf, int bufsz, char **argp)
 587 {
 588     writesomecmd(buf, bufsz, "ls", "", argp);
 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 #endif /* HAVE_LSTAT */
 646
 647     /* Was there a previous edit session? */
 648     if (reedit) {
 649         if (!*ed) {             /* no explicit editor      */
 650             *ed = edsave;       /* so use the previous one */
 651             if ((cp = r1bindex (*ed, '/')) == NULL)
 652                 cp = *ed;
 653
 654             /* unless we've specified it via "editor-next" */
 655             cp = concat (cp, "-next", NULL);
 656             if ((cp = context_find (cp)) != NULL)
 657                 *ed = cp;
 658         }
 659     } else {
 660         /* set initial editor */
 661         if (*ed == NULL && (*ed = context_find ("editor")) == NULL)
 662             *ed = defaulteditor;
 663     }
 664
 665     if (altmsg) {
 666         if (mp == NULL || *altmsg == '/' || cwd == NULL)
 667             strncpy (altpath, altmsg, sizeof(altpath));
 668         else
 669             snprintf (altpath, sizeof(altpath), "%s/%s", mp->foldpath, altmsg);
 670         if (cwd == NULL)
 671             strncpy (linkpath, LINK, sizeof(linkpath));
 672         else
 673             snprintf (linkpath, sizeof(linkpath), "%s/%s", cwd, LINK);
 674
 675         unlink (linkpath);
 676 #ifdef HAVE_LSTAT
 677         if (link (altpath, linkpath) == NOTOK) {
 678             symlink (altpath, linkpath);
 679             slinked = 1;
 680         } else {
 681             slinked = 0;
 682         }
 683 #else /* not HAVE_LSTAT */
 684         link (altpath, linkpath);
 685 #endif /* not HAVE_LSTAT */
 686     }
 687
 688     context_save ();    /* save the context file */
 689     fflush (stdout);
 690
 691     switch (pid = vfork()) {
 692         case NOTOK:
 693             advise ("fork", "unable to");
 694             status = NOTOK;
 695             break;
 696
 697         case OK:
 698             if (cwd)
 699                 chdir (cwd);
 700             if (altmsg) {
 701                 if (mp)
 702                     m_putenv ("mhfolder", mp->foldpath);
 703                 m_putenv ("editalt", altpath);
 704             }
 705
 706             vecp = 0;
 707             vec[vecp++] = r1bindex (*ed, '/');
 708             if (arg)
 709                 while (*arg)
 710                     vec[vecp++] = *arg++;
 711             vec[vecp++] = file;
 712             vec[vecp] = NULL;
 713
 714             execvp (*ed, vec);
 715             fprintf (stderr, "unable to exec ");
 716             perror (*ed);
 717             _exit (-1);
 718
 719         default:
 720             if ((status = pidwait (pid, NOTOK))) {
 721                 if (((status & 0xff00) != 0xff00)
 722                     && (!reedit || (status & 0x00ff))) {
 723                     if (!use && (status & 0xff00) &&
 724                             (rename (file, cp = m_backup (file)) != NOTOK)) {
 725                         advise (NULL, "problems with edit--draft left in %s", cp);
 726                     } else {
 727                         advise (NULL, "problems with edit--%s preserved", file);
 728                     }
 729                 }
 730                 status = -2;    /* maybe "reedit ? -2 : -1"? */
 731                 break;
 732             }
 733
 734             reedit++;
 735 #ifdef HAVE_LSTAT
 736             if (altmsg
 737                     && mp
 738                     && !is_readonly(mp)
 739                     && (slinked
 740                            ? lstat (linkpath, &st) != NOTOK
 741                                 && S_ISREG(st.st_mode)
 742                                 && copyf (linkpath, altpath) == NOTOK
 743                            : stat (linkpath, &st) != NOTOK
 744                                 && st.st_nlink == 1
 745                                 && (unlink (altpath) == NOTOK
 746                                         || link (linkpath, altpath) == NOTOK)))
 747                 advise (linkpath, "unable to update %s from", altmsg);
 748 #else /* HAVE_LSTAT */
 749             if (altmsg
 750                     && mp
 751                     && !is_readonly(mp)
 752                     && stat (linkpath, &st) != NOTOK
 753                     && st.st_nlink == 1
 754                     && (unlink (altpath) == NOTOK
 755                         || link (linkpath, altpath) == NOTOK))
 756                 advise (linkpath, "unable to update %s from", altmsg);
 757 #endif /* HAVE_LSTAT */
 758     }
 759
 760     /* normally, we remember which editor we used */
 761     if (save_editor)
 762         edsave = getcpy (*ed);
 763
 764     *ed = NULL;
 765     if (altmsg)
 766         unlink (linkpath);
 767
 768     return status;
 769 }
 770
 771
 772 #ifdef HAVE_LSTAT
 773 static int
 774 copyf (char *ifile, char *ofile)
 775 {
 776     int i, in, out;
 777     char buffer[BUFSIZ];
 778
 779     if ((in = open (ifile, O_RDONLY)) == NOTOK)
 780         return NOTOK;
 781     if ((out = open (ofile, O_WRONLY | O_TRUNC)) == NOTOK) {
 782         admonish (ofile, "unable to open and truncate");
 783         close (in);
 784         return NOTOK;
 785     }
 786
 787     while ((i = read (in, buffer, sizeof(buffer))) > OK)
 788         if (write (out, buffer, i) != i) {
 789             advise (ofile, "may have damaged");
 790             i = NOTOK;
 791             break;
 792         }
 793
 794     close (in);
 795     close (out);
 796     return i;
 797 }
 798 #endif /* HAVE_LSTAT */
 799
 800
 801 /*
 802  * SEND
 803  */
 804
 805 static int
 806 sendfile (char **arg, char *file, int pushsw)
 807 {
 808     pid_t child_id;
 809     int i, vecp;
 810     char *cp, *sp, *vec[MAXARGS];
 811
 812     /* Translate MIME composition file, if necessary */
 813     if ((cp = context_find ("automimeproc"))
 814             && (!strcmp (cp, "1"))
 815             && !getenv ("NOMHNPROC")
 816             && check_draft (file)
 817             && (buildfile (NULL, file) == NOTOK))
 818         return 0;
 819
 820     /* For backwards compatibility */
 821     if ((cp = context_find ("automhnproc"))
 822             && !getenv ("NOMHNPROC")
 823             && check_draft (file)
 824             && (i = editfile (&cp, NULL, file, NOUSE, NULL, NULL, NULL, 0)))
 825         return 0;
 826
 827     /*
 828      * If the sendproc is the nmh command `send', then we call
 829      * those routines directly rather than exec'ing the command.
 830      */
 831     if (strcmp (sp = r1bindex (sendproc, '/'), "send") == 0) {
 832         cp = invo_name;
 833         sendit (invo_name = sp, arg, file, pushsw);
 834         invo_name = cp;
 835         return 1;
 836     }
 837
 838     context_save ();    /* save the context file */
 839     fflush (stdout);
 840
 841     for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 842         sleep (5);
 843     switch (child_id) {
 844         case NOTOK:
 845             advise (NULL, "unable to fork, so sending directly...");
 846         case OK:
 847             vecp = 0;
 848             vec[vecp++] = invo_name;
 849             if (pushsw)
 850                 vec[vecp++] = "-push";
 851             if (arg)
 852                 while (*arg)
 853                     vec[vecp++] = *arg++;
 854             vec[vecp++] = file;
 855             vec[vecp] = NULL;
 856
 857             execvp (sendproc, vec);
 858             fprintf (stderr, "unable to exec ");
 859             perror (sendproc);
 860             _exit (-1);
 861
 862         default:
 863             if (pidwait(child_id, OK) == 0)
 864                 done (0);
 865             return 1;
 866     }
 867 }
 868
 869
 870 /*
 871  * Translate MIME composition file (call buildmimeproc)
 872  */
 873
 874 static int
 875 buildfile (char **argp, char *file)
 876 {
 877     int i;
 878     char **args, *ed;
 879
 880     ed = buildmimeproc;
 881
 882     /* allocate space for arguments */
 883     i = 0;
 884     if (argp) {
 885         while (argp[i])
 886             i++;
 887     }
 888     args = (char **) mh_xmalloc((i + 2) * sizeof(char *));
 889
 890     /*
 891      * For backward compatibility, we need to add -build
 892      * if we are using mhn as buildmimeproc
 893      */
 894     i = 0;
 895     if (strcmp (r1bindex (ed, '/'), "mhn") == 0)
 896         args[i++] = "-build";
 897
 898     /* copy any other arguments */
 899     while (argp && *argp)
 900         args[i++] = *argp++;
 901     args[i] = NULL;
 902
 903     i = editfile (&ed, args, file, NOUSE, NULL, NULL, NULL, 0);
 904     free (args);
 905
 906     return (i ? NOTOK : OK);
 907 }
 908
 909
 910 /*
 911  *  Check if draft is a mhbuild composition file
 912  */
 913
 914 static int
 915 check_draft (char *msgnam)
 916 {
 917     int state;
 918     char buf[BUFSIZ], name[NAMESZ];
 919     FILE *fp;
 920
 921     if ((fp = fopen (msgnam, "r")) == NULL)
 922         return 0;
 923     for (state = FLD;;)
 924         switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
 925             case FLD:
 926             case FLDPLUS:
 927             case FLDEOF:
 928                 /*
 929                  * If draft already contains any of the
 930                  * Content-XXX fields, then assume it already
 931                  * been converted.
 932                  */
 933                 if (uprf (name, XXX_FIELD_PRF)) {
 934                     fclose (fp);
 935                     return 0;
 936                 }
 937                 while (state == FLDPLUS)
 938                     state = m_getfld (state, name, buf, sizeof(buf), fp);
 939                 break;
 940
 941             case BODY:
 942                 do {
 943                     char *bp;
 944
 945                     for (bp = buf; *bp; bp++)
 946                         if (*bp != ' ' && *bp != '\t' && *bp != '\n') {
 947                             fclose (fp);
 948                             return 1;
 949                         }
 950
 951                     state = m_getfld (state, name, buf, sizeof(buf), fp);
 952                 } while (state == BODY);
 953                 /* and fall... */
 954
 955             default:
 956                 fclose (fp);
 957                 return 0;
 958         }
 959 }
 960
 961
 962 #ifndef CYRUS_SASL
 963 # define SASLminc(a) (a)
 964 #else /* CYRUS_SASL */
 965 # define SASLminc(a)  0
 966 #endif /* CYRUS_SASL */
 967
 968 #ifndef TLS_SUPPORT
 969 # define TLSminc(a)  (a)
 970 #else /* TLS_SUPPORT */
 971 # define TLSminc(a)   0
 972 #endif /* TLS_SUPPORT */
 973
 974 static struct swit  sendswitches[] = {
 975 #define ALIASW            0
 976     { "alias aliasfile", 0 },
 977 #define DEBUGSW           1
 978     { "debug", -5 },
 979 #define FILTSW            2
 980     { "filter filterfile", 0 },
 981 #define NFILTSW           3
 982     { "nofilter", 0 },
 983 #define FRMTSW            4
 984     { "format", 0 },
 985 #define NFRMTSW           5
 986     { "noformat", 0 },
 987 #define FORWSW            6
 988     { "forward", 0 },
 989 #define NFORWSW           7
 990     { "noforward", 0 },
 991 #define MIMESW            8
 992     { "mime", 0 },
 993 #define NMIMESW           9
 994     { "nomime", 0 },
 995 #define MSGDSW           10
 996     { "msgid", 0 },
 997 #define NMSGDSW          11
 998     { "nomsgid", 0 },
 999 #define SPSHSW           12
1000     { "push", 0 },
1001 #define NSPSHSW          13
1002     { "nopush", 0 },
1003 #define SPLITSW          14
1004     { "split seconds", 0 },
1005 #define UNIQSW           15
1006     { "unique", -6 },
1007 #define NUNIQSW          16
1008     { "nounique", -8 },
1009 #define VERBSW           17
1010     { "verbose", 0 },
1011 #define NVERBSW          18
1012     { "noverbose", 0 },
1013 #define WATCSW           19
1014     { "watch", 0 },
1015 #define NWATCSW          20
1016     { "nowatch", 0 },
1017 #define WIDTHSW          21
1018     { "width columns", 0 },
1019 #define SVERSIONSW       22
1020     { "version", 0 },
1021 #define SHELPSW          23
1022     { "help", 0 },
1023 #define BITSTUFFSW       24
1024     { "dashstuffing", -12 },
1025 #define NBITSTUFFSW      25
1026     { "nodashstuffing", -14 },
1027 #define MAILSW           26
1028     { "mail", -4 },
1029 #define SAMLSW           27
1030     { "saml", -4 },
1031 #define SSNDSW           28
1032     { "send", -4 },
1033 #define SOMLSW           29
1034     { "soml", -4 },
1035 #define CLIESW           30
1036     { "client host", -6 },
1037 #define SERVSW           31
1038     { "server host", 6 },
1039 #define SNOOPSW          32
1040     { "snoop", -5 },
1041 #define SDRFSW           33
1042     { "draftfolder +folder", -6 },
1043 #define SDRMSW           34
1044     { "draftmessage msg", -6 },
1045 #define SNDRFSW          35
1046     { "nodraftfolder", -3 },
1047 #define SASLSW           36
1048     { "sasl", SASLminc(-4) },
1049 #define NOSASLSW         37
1050     { "nosasl", SASLminc(-6) },
1051 #define SASLMXSSFSW      38
1052     { "saslmaxssf", SASLminc(-10) },
1053 #define SASLMECHSW       39
1054     { "saslmech", SASLminc(-5) },
1055 #define USERSW           40
1056     { "user", SASLminc(-4) },
1057 #define SNDATTACHSW       41
1058     { "attach file", 6 },
1059 #define SNDNOATTACHSW     42
1060     { "noattach", 0 },
1061 #define SNDATTACHFORMAT   43
1062     { "attachformat", 7 },
1063 #define PORTSW            44
1064     { "port server-port-name/number", 4 },
1065 #define TLSSW             45
1066     { "tls", TLSminc(-3) },
1067 #define NTLSSW            46
1068     { "notls", TLSminc(-5) },
1069     { NULL, 0 }
1070 };
1071
1072
1073 extern int debugsw;             /* from sendsbr.c */
1074 extern int forwsw;
1075 extern int inplace;
1076 extern int pushsw;
1077 extern int splitsw;
1078 extern int unique;
1079 extern int verbsw;
1080
1081 extern char *altmsg;            /*  .. */
1082 extern char *annotext;
1083 extern char *distfile;
1084
1085
1086 static void
1087 sendit (char *sp, char **arg, char *file, int pushed)
1088 {
1089     int vecp, n = 1;
1090     char *cp, buf[BUFSIZ], **argp;
1091     char **arguments, *vec[MAXARGS];
1092     struct stat st;
1093     char        *attach = NMH_ATTACH_HEADER;/* attachment header field name */
1094     int         attachformat = 1;       /* mhbuild format specifier for
1095                                            attachments */
1096
1097 #ifndef lint
1098     int distsw = 0;
1099 #endif
1100
1101     /*
1102      * Make sure these are defined.  In particular, we need
1103      * vec[1] to be NULL, in case "arg" is NULL below.  It
1104      * doesn't matter what is the value of vec[0], but we
1105      * set it to NULL, to help catch "off-by-one" errors.
1106      */
1107     vec[0] = NULL;
1108     vec[1] = NULL;
1109
1110     /*
1111      * Temporarily copy arg to vec, since the brkstring() call in
1112      * getarguments() will wipe it out before it is merged in.
1113      * Also, we skip the first element of vec, since getarguments()
1114      * skips it.  Then we count the number of arguments
1115      * copied.  The value of "n" will be one greater than
1116      * this in order to simulate the standard argc/argv.
1117      */
1118     if (arg) {
1119         char **bp;
1120
1121         copyip (arg, vec+1, MAXARGS-1);
1122         bp = vec+1;
1123         while (*bp++)
1124             n++;
1125     }
1126
1127     /*
1128      * Merge any arguments from command line (now in vec)
1129      * and arguments from profile.
1130      */
1131     arguments = getarguments (sp, n, vec, 1);
1132     argp = arguments;
1133
1134     debugsw = 0;
1135     forwsw = 1;
1136     inplace = 1;
1137     unique = 0;
1138
1139     altmsg = NULL;
1140     annotext = NULL;
1141     distfile = NULL;
1142
1143     vecp = 1;                   /* we'll get the zero'th element later */
1144     vec[vecp++] = "-library";
1145     vec[vecp++] = getcpy (m_maildir (""));
1146
1147     if ((cp = context_find ("fileproc"))) {
1148       vec[vecp++] = "-fileproc";
1149       vec[vecp++] = cp;
1150     }
1151
1152     if ((cp = context_find ("mhlproc"))) {
1153       vec[vecp++] = "-mhlproc";
1154       vec[vecp++] = cp;
1155     }
1156
1157     while ((cp = *argp++)) {
1158         if (*cp == '-') {
1159             switch (smatch (++cp, sendswitches)) {
1160                 case AMBIGSW:
1161                     ambigsw (cp, sendswitches);
1162                     return;
1163                 case UNKWNSW:
1164                     advise (NULL, "-%s unknown\n", cp);
1165                     return;
1166
1167                 case SHELPSW:
1168                     snprintf (buf, sizeof(buf), "%s [switches]", sp);
1169                     print_help (buf, sendswitches, 1);
1170                     return;
1171                 case SVERSIONSW:
1172                     print_version (invo_name);
1173                     return;
1174
1175                 case SPSHSW:
1176                     pushed++;
1177                     continue;
1178                 case NSPSHSW:
1179                     pushed = 0;
1180                     continue;
1181
1182                 case SPLITSW:
1183                     if (!(cp = *argp++) || sscanf (cp, "%d", &splitsw) != 1) {
1184                         advise (NULL, "missing argument to %s", argp[-2]);
1185                         return;
1186                     }
1187                     continue;
1188
1189                 case UNIQSW:
1190                     unique++;
1191                     continue;
1192                 case NUNIQSW:
1193                     unique = 0;
1194                     continue;
1195                 case FORWSW:
1196                     forwsw++;
1197                     continue;
1198                 case NFORWSW:
1199                     forwsw = 0;
1200                     continue;
1201
1202                 case VERBSW:
1203                     verbsw++;
1204                     vec[vecp++] = --cp;
1205                     continue;
1206                 case NVERBSW:
1207                     verbsw = 0;
1208                     vec[vecp++] = --cp;
1209                     continue;
1210
1211                 case DEBUGSW:
1212                     debugsw++;  /* fall */
1213                 case NFILTSW:
1214                 case FRMTSW:
1215                 case NFRMTSW:
1216                 case BITSTUFFSW:
1217                 case NBITSTUFFSW:
1218                 case MIMESW:
1219                 case NMIMESW:
1220                 case MSGDSW:
1221                 case NMSGDSW:
1222                 case WATCSW:
1223                 case NWATCSW:
1224                 case MAILSW:
1225                 case SAMLSW:
1226                 case SSNDSW:
1227                 case SOMLSW:
1228                 case SNOOPSW:
1229                 case SASLSW:
1230                 case NOSASLSW:
1231                 case TLSSW:
1232                 case NTLSSW:
1233                     vec[vecp++] = --cp;
1234                     continue;
1235
1236                 case ALIASW:
1237                 case FILTSW:
1238                 case WIDTHSW:
1239                 case CLIESW:
1240                 case SERVSW:
1241                 case SASLMXSSFSW:
1242                 case SASLMECHSW:
1243                 case USERSW:
1244                 case PORTSW:
1245                     vec[vecp++] = --cp;
1246                     if (!(cp = *argp++) || *cp == '-') {
1247                         advise (NULL, "missing argument to %s", argp[-2]);
1248                         return;
1249                     }
1250                     vec[vecp++] = cp;
1251                     continue;
1252
1253                 case SDRFSW:
1254                 case SDRMSW:
1255                     if (!(cp = *argp++) || *cp == '-') {
1256                         advise (NULL, "missing argument to %s", argp[-2]);
1257                         return;
1258                     }
1259                 case SNDRFSW:
1260                     continue;
1261
1262                 case SNDATTACHSW:
1263                     if (!(attach = *argp++) || *attach == '-') {
1264                         advise (NULL, "missing argument to %s", argp[-2]);
1265                         return;
1266                     }
1267                     continue;
1268                 case SNDNOATTACHSW:
1269                     attach = NULL;
1270                     continue;
1271
1272                 case SNDATTACHFORMAT:
1273                     if (! *argp || **argp == '-')
1274                         adios (NULL, "missing argument to %s", argp[-1]);
1275                     else {
1276                         attachformat = atoi (*argp);
1277                         if (attachformat < 0 ||
1278                             attachformat > ATTACHFORMATS - 1) {
1279                             advise (NULL, "unsupported attachformat %d",
1280                                     attachformat);
1281                             continue;
1282                         }
1283                     }
1284                     ++argp;
1285                     continue;
1286             }
1287         }
1288         advise (NULL, "usage: %s [switches]", sp);
1289         return;
1290     }
1291
1292     /* allow Aliasfile: profile entry */
1293     if ((cp = context_find ("Aliasfile"))) {
1294         char **ap, *dp;
1295
1296         dp = getcpy (cp);
1297         for (ap = brkstring (dp, " ", "\n"); ap && *ap; ap++) {
1298             vec[vecp++] = "-alias";
1299             vec[vecp++] = *ap;
1300         }
1301     }
1302
1303     if ((cp = getenv ("SIGNATURE")) == NULL || *cp == 0)
1304         if ((cp = context_find ("signature")) && *cp)
1305             m_putenv ("SIGNATURE", cp);
1306
1307     if ((annotext = getenv ("mhannotate")) == NULL || *annotext == 0)
1308         annotext = NULL;
1309     if ((altmsg = getenv ("mhaltmsg")) == NULL || *altmsg == 0)
1310         altmsg = NULL;
1311     if (annotext && ((cp = getenv ("mhinplace")) != NULL && *cp != 0))
1312         inplace = atoi (cp);
1313
1314     if ((cp = getenv ("mhdist"))
1315             && *cp
1316 #ifndef lint
1317             && (distsw = atoi (cp))
1318 #endif /* not lint */
1319             && altmsg) {
1320         vec[vecp++] = "-dist";
1321         distfile = getcpy (m_mktemp2(altmsg, invo_name, NULL, NULL));
1322         unlink(distfile);
1323         if (link (altmsg, distfile) == NOTOK)
1324             adios (distfile, "unable to link %s to", altmsg);
1325     } else {
1326         distfile = NULL;
1327     }
1328
1329     if (altmsg == NULL || stat (altmsg, &st) == NOTOK) {
1330         st.st_mtime = 0;
1331         st.st_dev = 0;
1332         st.st_ino = 0;
1333     }
1334     if ((pushsw = pushed))
1335         push ();
1336
1337     vec[0] = r1bindex (postproc, '/');
1338     closefds (3);
1339
1340     if (sendsbr (vec, vecp, file, &st, 1, attach, attachformat) == OK)
1341         done (0);
1342 }
1343
1344 /*
1345  * WHOM
1346  */
1347
1348 static int
1349 whomfile (char **arg, char *file)
1350 {
1351     pid_t pid;
1352     int vecp;
1353     char *vec[MAXARGS];
1354
1355     context_save ();    /* save the context file */
1356     fflush (stdout);
1357
1358     switch (pid = vfork()) {
1359         case NOTOK:
1360             advise ("fork", "unable to");
1361             return 1;
1362
1363         case OK:
1364             vecp = 0;
1365             vec[vecp++] = r1bindex (whomproc, '/');
1366             vec[vecp++] = file;
1367             if (arg)
1368                 while (*arg)
1369                     vec[vecp++] = *arg++;
1370             vec[vecp] = NULL;
1371
1372             execvp (whomproc, vec);
1373             fprintf (stderr, "unable to exec ");
1374             perror (whomproc);
1375             _exit (-1);         /* NOTREACHED */
1376
1377         default:
1378             return (pidwait (pid, NOTOK) & 0377 ? 1 : 0);
1379     }
1380 }
1381
1382
1383 /*
1384  * Remove the draft file
1385  */
1386
1387 static int
1388 removefile (char *drft)
1389 {
1390     if (unlink (drft) == NOTOK)
1391         adios (drft, "unable to unlink");
1392
1393     return OK;
1394 }