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     { NULL, 0 }
  67 };
  68
  69 /*
  70  * Options at the "whatnow" prompt
  71  */
  72 static struct swit aleqs[] = {
  73 #define EDITSW                         0
  74     { "edit [<editor> <switches>]", 0 },
  75 #define REFILEOPT                      1
  76     { "refile [<switches>] +folder", 0 },
  77 #define BUILDMIMESW                    2
  78     { "mime [<switches>]", 0 },
  79 #define DISPSW                         3
  80     { "display [<switches>]", 0 },
  81 #define LISTSW                         4
  82     { "list [<switches>]", 0 },
  83 #define SENDSW                         5
  84     { "send [<switches>]", 0 },
  85 #define PUSHSW                         6
  86     { "push [<switches>]", 0 },
  87 #define WHOMSW                         7
  88     { "whom [<switches>]", 0 },
  89 #define QUITSW                         8
  90     { "quit [-delete]", 0 },
  91 #define DELETESW                       9
  92     { "delete", 0 },
  93 #define CDCMDSW                       10
  94     { "cd [directory]", 0 },
  95 #define PWDCMDSW                      11
  96     { "pwd", 0 },
  97 #define LSCMDSW                       12
  98     { "ls", 0 },
  99 #define ATTACHCMDSW                   13
 100     { "attach", 0 },
 101 #define DETACHCMDSW                   14
 102     { "detach [-n]", 2 },
 103 #define ALISTCMDSW                    15
 104     { "alist [-ln] ", 2 },
 105     { NULL, 0 }
 106 };
 107
 108 static char *myprompt = "\nWhat now? ";
 109
 110 /*
 111  * static prototypes
 112  */
 113 static int editfile (char **, char **, char *, int, struct msgs *,
 114         char *, char *, int);
 115 static int sendfile (char **, char *, int);
 116 static void sendit (char *, char **, char *, int);
 117 static int buildfile (char **, char *);
 118 static int check_draft (char *);
 119 static int whomfile (char **, char *);
 120 static int removefile (char *);
 121 static void writelscmd(char *, int, char **);
 122 static void writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp);
 123 static FILE* popen_in_dir(const char *dir, const char *cmd, const char *type);
 124 static int system_in_dir(const char *dir, const char *cmd);
 125
 126
 127 #ifdef HAVE_LSTAT
 128 static int copyf (char *, char *);
 129 #endif
 130
 131
 132 int
 133 WhatNow (int argc, char **argv)
 134 {
 135     int isdf = 0, nedit = 0, use = 0;
 136     char *cp, *dfolder = NULL, *dmsg = NULL;
 137     char *ed = NULL, *drft = NULL, *msgnam = NULL;
 138     char buf[BUFSIZ], prompt[BUFSIZ];
 139     char **argp, **arguments;
 140     struct stat st;
 141     char        *attach = (char *)0;    /* attachment header field name */
 142     char        cwd[MAXPATHLEN + 1];    /* current working directory */
 143     char        file[MAXPATHLEN + 1];   /* file name buffer */
 144     char        shell[MAXPATHLEN + 1];  /* shell response buffer */
 145     FILE        *f;                     /* read pointer for bgnd proc */
 146     char        *l;                     /* set on -l to alist  command */
 147     int         n;                      /* set on -n to alist command */
 148
 149     invo_name = r1bindex (argv[0], '/');
 150
 151     /* read user profile/context */
 152     context_read();
 153
 154     arguments = getarguments (invo_name, argc, argv, 1);
 155     argp = arguments;
 156
 157     /*
 158      *  Get the initial current working directory.
 159      */
 160
 161     if (getcwd(cwd, sizeof (cwd)) == (char *)0) {
 162         adios("getcwd", "could not get working directory");
 163     }
 164
 165     while ((cp = *argp++)) {
 166         if (*cp == '-') {
 167             switch (smatch (++cp, whatnowswitches)) {
 168             case AMBIGSW:
 169                 ambigsw (cp, whatnowswitches);
 170                 done (1);
 171             case UNKWNSW:
 172                 adios (NULL, "-%s unknown", cp);
 173
 174             case HELPSW:
 175                 snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 176                 print_help (buf, whatnowswitches, 1);
 177                 done (1);
 178             case VERSIONSW:
 179                 print_version(invo_name);
 180                 done (1);
 181
 182             case DFOLDSW:
 183                 if (dfolder)
 184                     adios (NULL, "only one draft folder at a time!");
 185                 if (!(cp = *argp++) || *cp == '-')
 186                     adios (NULL, "missing argument to %s", argp[-2]);
 187                 dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 188                                 *cp != '@' ? TFOLDER : TSUBCWF);
 189                 continue;
 190             case DMSGSW:
 191                 if (dmsg)
 192                     adios (NULL, "only one draft message at a time!");
 193                 if (!(dmsg = *argp++) || *dmsg == '-')
 194                     adios (NULL, "missing argument to %s", argp[-2]);
 195                 continue;
 196             case NDFLDSW:
 197                 dfolder = NULL;
 198                 isdf = NOTOK;
 199                 continue;
 200
 201             case EDITRSW:
 202                 if (!(ed = *argp++) || *ed == '-')
 203                     adios (NULL, "missing argument to %s", argp[-2]);
 204                 nedit = 0;
 205                 continue;
 206             case NEDITSW:
 207                 nedit++;
 208                 continue;
 209
 210             case PRMPTSW:
 211                 if (!(myprompt = *argp++) || *myprompt == '-')
 212                     adios (NULL, "missing argument to %s", argp[-2]);
 213                 continue;
 214
 215             case ATTACHSW:
 216                 if (attach != (char *)0)
 217                     adios(NULL, "only one attachment header field name at a time!");
 218                 if (!(attach = *argp++) || *attach == '-')
 219                     adios (NULL, "missing argument to %s", argp[-2]);
 220                 continue;
 221             }
 222         }
 223         if (drft)
 224             adios (NULL, "only one draft at a time!");
 225         else
 226             drft = cp;
 227     }
 228
 229     if ((drft == NULL && (drft = getenv ("mhdraft")) == NULL) || *drft == 0)
 230         drft = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 231
 232     msgnam = (cp = getenv ("mhaltmsg")) && *cp ? getcpy (cp) : NULL;
 233
 234     if ((cp = getenv ("mhuse")) && *cp)
 235         use = atoi (cp);
 236
 237     if (ed == NULL && ((ed = getenv ("mheditor")) == NULL || *ed == 0)) {
 238         ed = NULL;
 239         nedit++;
 240     }
 241
 242     /* start editing the draft, unless -noedit was given */
 243     if (!nedit && editfile (&ed, NULL, drft, use, NULL, msgnam, NULL, 1) < 0)
 244         done (1);
 245
 246     snprintf (prompt, sizeof(prompt), myprompt, invo_name);
 247     for (;;) {
 248         if (!(argp = getans (prompt, aleqs))) {
 249             unlink (LINK);
 250             done (1);
 251         }
 252         switch (smatch (*argp, aleqs)) {
 253         case DISPSW:
 254             /* display the message being replied to, or distributed */
 255             if (msgnam)
 256                 showfile (++argp, msgnam);
 257             else
 258                 advise (NULL, "no alternate message to display");
 259             break;
 260
 261         case BUILDMIMESW:
 262             /* Translate MIME composition file */
 263             buildfile (++argp, drft);
 264             break;
 265
 266         case EDITSW:
 267             /* Call an editor on the draft file */
 268             if (*++argp)
 269                 ed = *argp++;
 270             if (editfile (&ed, argp, drft, NOUSE, NULL, msgnam, NULL, 1) == NOTOK)
 271                 done (1);
 272             break;
 273
 274         case LISTSW:
 275             /* display the draft file */
 276             showfile (++argp, drft);
 277             break;
 278
 279         case WHOMSW:
 280             /* Check to whom the draft would be sent */
 281             whomfile (++argp, drft);
 282             break;
 283
 284         case QUITSW:
 285             /* Quit, and possibly delete the draft */
 286             if (*++argp && (*argp[0] == 'd' ||
 287                 ((*argp)[0] == '-' && (*argp)[1] == 'd'))) {
 288                 removefile (drft);
 289             } else {
 290                 if (stat (drft, &st) != NOTOK)
 291                     advise (NULL, "draft left on %s", drft);
 292             }
 293             done (1);
 294
 295         case DELETESW:
 296             /* Delete draft and exit */
 297             removefile (drft);
 298             done (1);
 299
 300         case PUSHSW:
 301             /* Send draft in background */
 302             if (sendfile (++argp, drft, 1))
 303                 done (1);
 304             break;
 305
 306         case SENDSW:
 307             /* Send draft */
 308             sendfile (++argp, drft, 0);
 309             break;
 310
 311         case REFILEOPT:
 312             /* Refile the draft */
 313             if (refile (++argp, drft) == 0)
 314                 done (0);
 315             break;
 316
 317         case CDCMDSW:
 318             /* Change the working directory for attachments
 319              *
 320              *  Run the directory through the user's shell so that
 321              *  we can take advantage of any syntax that the user
 322              *  is accustomed to.  Read back the absolute path.
 323              */
 324
 325             if (*(argp+1) == (char *)0) {
 326                 (void)sprintf(buf, "$SHELL -c \"cd;pwd\"");
 327             }
 328             else {
 329                 writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
 330             }
 331             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 332                 fgets(cwd, sizeof (cwd), f);
 333
 334                 if (strchr(cwd, '\n') != (char *)0)
 335                         *strchr(cwd, '\n') = '\0';
 336
 337                 pclose(f);
 338             }
 339             else {
 340                 advise("popen", "could not get directory");
 341             }
 342
 343             break;
 344
 345         case PWDCMDSW:
 346             /* Print the working directory for attachments */
 347             printf("%s\n", cwd);
 348             break;
 349
 350         case LSCMDSW:
 351             /* List files in the current attachment working directory
 352              *
 353              *  Use the user's shell so that we can take advantage of any
 354              *  syntax that the user is accustomed to.
 355              */
 356             writelscmd(buf, sizeof(buf), argp);
 357             (void)system_in_dir(cwd, buf);
 358             break;
 359
 360         case ALISTCMDSW:
 361             /*
 362              *  List attachments on current draft.  Options are:
 363              *
 364              *   -l     long listing (full path names)
 365              *   -n     numbers listing
 366              */
 367
 368             if (attach == (char *)0) {
 369                 advise((char *)0, "can't list because no header field name was given.");
 370                 break;
 371             }
 372
 373             l = (char *)0;
 374             n = 0;
 375
 376             while (*++argp != (char *)0) {
 377                 if (strcmp(*argp, "-l") == 0)
 378                     l = "/";
 379
 380                 else if (strcmp(*argp, "-n") == 0)
 381                     n = 1;
 382
 383                 else if (strcmp(*argp, "-ln") == 0 || strcmp(*argp, "-nl") == 0) {
 384                     l = "/";
 385                     n = 1;
 386                 }
 387
 388                 else {
 389                     n = -1;
 390                     break;
 391                 }
 392             }
 393
 394             if (n == -1)
 395                 advise((char *)0, "usage is alist [-ln].");
 396
 397             else
 398                 annolist(drft, attach, l, n);
 399
 400             break;
 401
 402         case ATTACHCMDSW:
 403             /*
 404              *  Attach files to current draft.
 405              */
 406
 407             if (attach == (char *)0) {
 408                 advise((char *)0, "can't attach because no header field name was given.");
 409                 break;
 410             }
 411
 412             if (*(argp+1) == (char *)0) {
 413                 advise((char *)0, "attach command requires file argument(s).");
 414                 break;
 415             }
 416
 417             /*
 418              *  Build a command line that causes the user's shell to list the file name
 419              *  arguments.  This handles and wildcard expansion, tilde expansion, etc.
 420              */
 421             writelscmd(buf, sizeof(buf), argp);
 422
 423             /*
 424              *  Read back the response from the shell, which contains a number of lines
 425              *  with one file name per line.  Remove off the newline.  Determine whether
 426              *  we have an absolute or relative path name.  Prepend the current working
 427              *  directory to relative path names.  Add the attachment annotation to the
 428              *  draft.
 429              */
 430
 431             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 432                 while (fgets(shell, sizeof (shell), f) != (char *)0) {
 433                     *(strchr(shell, '\n')) = '\0';
 434
 435                     if (*shell == '/')
 436                         (void)annotate(drft, attach, shell, 1, 0, -2, 1);
 437                     else {
 438                         (void)sprintf(file, "%s/%s", cwd, shell);
 439                         (void)annotate(drft, attach, file, 1, 0, -2, 1);
 440                     }
 441                 }
 442
 443                 pclose(f);
 444             }
 445             else {
 446                 advise("popen", "could not get file from shell");
 447             }
 448
 449             break;
 450
 451         case DETACHCMDSW:
 452             /*
 453              *  Detach files from current draft.
 454              */
 455
 456             if (attach == (char *)0) {
 457                 advise((char *)0, "can't detach because no header field name was given.");
 458                 break;
 459             }
 460
 461             /*
 462              *  Scan the arguments for a -n.  Mixed file names and numbers aren't allowed,
 463              *  so this catches a -n anywhere in the argument list.
 464              */
 465
 466             for (n = 0, arguments = argp + 1; *arguments != (char *)0; arguments++) {
 467                 if (strcmp(*arguments, "-n") == 0) {
 468                         n = 1;
 469                         break;
 470                 }
 471             }
 472
 473             /*
 474              *  A -n was found so interpret the arguments as attachment numbers.
 475              *  Decrement any remaining argument number that is greater than the one
 476              *  just processed after processing each one so that the numbering stays
 477              *  correct.
 478              */
 479
 480             if (n == 1) {
 481                 for (arguments = argp + 1; *arguments != (char *)0; arguments++) {
 482                     if (strcmp(*arguments, "-n") == 0)
 483                         continue;
 484
 485                     if (**arguments != '\0') {
 486                         n = atoi(*arguments);
 487                         (void)annotate(drft, attach, (char *)0, 1, 0, n, 1);
 488
 489                         for (argp = arguments + 1; *argp != (char *)0; argp++) {
 490                             if (atoi(*argp) > n) {
 491                                 if (atoi(*argp) == 1)
 492                                     *argp = "";
 493                                 else
 494                                     (void)sprintf(*argp, "%d", atoi(*argp) - 1);
 495                             }
 496                         }
 497                     }
 498                 }
 499             }
 500
 501             /*
 502              *  The arguments are interpreted as file names.  Run them through the
 503              *  user's shell for wildcard expansion and other goodies.  Do this from
 504              *  the current working directory if the argument is not an absolute path
 505              *  name (does not begin with a /).
 506              *
 507              * We feed all the file names to the shell at once, otherwise you can't
 508              * provide a file name with a space in it.
 509              */
 510             writelscmd(buf, sizeof(buf), argp);
 511             if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
 512                 while (fgets(shell, sizeof (shell), f) != (char *)0) {
 513                     *(strchr(shell, '\n')) = '\0';
 514                     (void)annotate(drft, attach, shell, 1, 0, 0, 1);
 515                 }
 516                 pclose(f);
 517             } else {
 518                 advise("popen", "could not get file from shell");
 519             }
 520
 521             break;
 522
 523         default:
 524             /* Unknown command */
 525             advise (NULL, "say what?");
 526             break;
 527         }
 528     }
 529     /*NOTREACHED*/
 530 }
 531
 532
 533
 534 /* Build a command line of the form $SHELL -c "cd 'cwd'; cmd argp ... ; trailcmd". */
 535 static void
 536 writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
 537 {
 538     char *cp;
 539     /* Note that we do not quote -- the argp from the user
 540      * is assumed to be quoted as they desire. (We can't treat
 541      * it as pure literal as that would prevent them using ~,
 542      * wildcards, etc.) The buffer produced by this function
 543      * should be given to popen_in_dir() or system_in_dir() so
 544      * that the current working directory is set correctly.
 545      */
 546     int ln = snprintf(buf, bufsz, "$SHELL -c \"%s", cmd);
 547     /* NB that some snprintf() return -1 on overflow rather than the
 548      * new C99 mandated 'number of chars that would have been written'
 549      */
 550     /* length checks here and inside the loop allow for the
 551      * trailing ';', trailcmd, '"' and NUL
 552      */
 553     int trailln = strlen(trailcmd) + 3;
 554     if (ln < 0 || ln + trailln > bufsz)
 555         adios((char *)0, "arguments too long");
 556
 557     cp = buf + ln;
 558
 559     while (*++argp != (char *)0) {
 560         ln = strlen(*argp);
 561         /* +1 for leading space */
 562         if (ln + trailln + 1 > bufsz - (cp-buf))
 563             adios((char *)0, "arguments too long");
 564         *cp++ = ' ';
 565         memcpy(cp, *argp, ln+1);
 566         cp += ln;
 567     }
 568     if (*trailcmd) {
 569         *cp++ = ';';
 570         strcpy(cp, trailcmd);
 571         cp += trailln - 3;
 572     }
 573     *cp++ = '"';
 574     *cp = 0;
 575 }
 576
 577 /*
 578  * Build a command line that causes the user's shell to list the file name
 579  * arguments.  This handles and wildcard expansion, tilde expansion, etc.
 580  */
 581 static void
 582 writelscmd(char *buf, int bufsz, char **argp)
 583 {
 584     writesomecmd(buf, bufsz, "ls", "", argp);
 585 }
 586
 587 /* Like system(), but run the command in directory dir.
 588  * This assumes the program is single-threaded!
 589  */
 590 static int
 591 system_in_dir(const char *dir, const char *cmd)
 592 {
 593     char olddir[BUFSIZ];
 594     int r;
 595     if (getcwd(olddir, sizeof(olddir)) == 0)
 596         adios("getcwd", "could not get working directory");
 597     if (chdir(dir) != 0)
 598         adios("chdir", "could not change working directory");
 599     r = system(cmd);
 600     if (chdir(olddir) != 0)
 601         adios("chdir", "could not change working directory");
 602     return r;
 603 }
 604
 605 /* ditto for popen() */
 606 static FILE*
 607 popen_in_dir(const char *dir, const char *cmd, const char *type)
 608 {
 609     char olddir[BUFSIZ];
 610     FILE *f;
 611     if (getcwd(olddir, sizeof(olddir)) == 0)
 612         adios("getcwd", "could not get working directory");
 613     if (chdir(dir) != 0)
 614         adios("chdir", "could not change working directory");
 615     f = popen(cmd, type);
 616     if (chdir(olddir) != 0)
 617         adios("chdir", "could not change working directory");
 618     return f;
 619 }
 620
 621
 622 /*
 623  * EDIT
 624  */
 625
 626 static int  reedit = 0;         /* have we been here before?     */
 627 static char *edsave = NULL;     /* the editor we used previously */
 628
 629
 630 static int
 631 editfile (char **ed, char **arg, char *file, int use, struct msgs *mp,
 632           char *altmsg, char *cwd, int save_editor)
 633 {
 634     int pid, status, vecp;
 635     char altpath[BUFSIZ], linkpath[BUFSIZ];
 636     char *cp, *vec[MAXARGS];
 637     struct stat st;
 638
 639 #ifdef HAVE_LSTAT
 640     int slinked = 0;
 641 #if 0
 642     int oumask; /* PJS: for setting permissions on symlinks. */
 643 #endif
 644 #endif /* HAVE_LSTAT */
 645
 646     /* Was there a previous edit session? */
 647     if (reedit) {
 648         if (!*ed) {             /* no explicit editor      */
 649             *ed = edsave;       /* so use the previous one */
 650             if ((cp = r1bindex (*ed, '/')) == NULL)
 651                 cp = *ed;
 652
 653             /* unless we've specified it via "editor-next" */
 654             cp = concat (cp, "-next", NULL);
 655             if ((cp = context_find (cp)) != NULL)
 656                 *ed = cp;
 657         }
 658     } else {
 659         /* set initial editor */
 660         if (*ed == NULL && (*ed = context_find ("editor")) == NULL)
 661             *ed = defaulteditor;
 662     }
 663
 664     if (altmsg) {
 665         if (mp == NULL || *altmsg == '/' || cwd == NULL)
 666             strncpy (altpath, altmsg, sizeof(altpath));
 667         else
 668             snprintf (altpath, sizeof(altpath), "%s/%s", mp->foldpath, altmsg);
 669         if (cwd == NULL)
 670             strncpy (linkpath, LINK, sizeof(linkpath));
 671         else
 672             snprintf (linkpath, sizeof(linkpath), "%s/%s", cwd, LINK);
 673     }
 674
 675     if (altmsg) {
 676         unlink (linkpath);
 677 #ifdef HAVE_LSTAT
 678         if (link (altpath, linkpath) == NOTOK) {
 679 #if 0
 680             /* I don't think permission on symlinks matters /JLR */
 681             oumask = umask(0044);       /* PJS: else symlinks are world 'r' */
 682 #endif
 683             symlink (altpath, linkpath);
 684 #if 0
 685             umask(oumask);              /* PJS: else symlinks are world 'r' */
 686 #endif
 687             slinked = 1;
 688         } else {
 689             slinked = 0;
 690         }
 691 #else /* not HAVE_LSTAT */
 692         link (altpath, linkpath);
 693 #endif /* not HAVE_LSTAT */
 694     }
 695
 696     context_save ();    /* save the context file */
 697     fflush (stdout);
 698
 699     switch (pid = vfork()) {
 700         case NOTOK:
 701             advise ("fork", "unable to");
 702             status = NOTOK;
 703             break;
 704
 705         case OK:
 706             if (cwd)
 707                 chdir (cwd);
 708             if (altmsg) {
 709                 if (mp)
 710                     m_putenv ("mhfolder", mp->foldpath);
 711                 m_putenv ("editalt", altpath);
 712             }
 713
 714             vecp = 0;
 715             vec[vecp++] = r1bindex (*ed, '/');
 716             if (arg)
 717                 while (*arg)
 718                     vec[vecp++] = *arg++;
 719             vec[vecp++] = file;
 720             vec[vecp] = NULL;
 721
 722             execvp (*ed, vec);
 723             fprintf (stderr, "unable to exec ");
 724             perror (*ed);
 725             _exit (-1);
 726
 727         default:
 728             if ((status = pidwait (pid, NOTOK))) {
 729                 if (((status & 0xff00) != 0xff00)
 730                     && (!reedit || (status & 0x00ff))) {
 731                     if (!use && (status & 0xff00) &&
 732                             (rename (file, cp = m_backup (file)) != NOTOK)) {
 733                         advise (NULL, "problems with edit--draft left in %s", cp);
 734                     } else {
 735                         advise (NULL, "problems with edit--%s preserved", file);
 736                     }
 737                 }
 738                 status = -2;    /* maybe "reedit ? -2 : -1"? */
 739                 break;
 740             }
 741
 742             reedit++;
 743 #ifdef HAVE_LSTAT
 744             if (altmsg
 745                     && mp
 746                     && !is_readonly(mp)
 747                     && (slinked
 748                            ? lstat (linkpath, &st) != NOTOK
 749                                 && S_ISREG(st.st_mode)
 750                                 && copyf (linkpath, altpath) == NOTOK
 751                            : stat (linkpath, &st) != NOTOK
 752                                 && st.st_nlink == 1
 753                                 && (unlink (altpath) == NOTOK
 754                                         || link (linkpath, altpath) == NOTOK)))
 755                 advise (linkpath, "unable to update %s from", altmsg);
 756 #else /* HAVE_LSTAT */
 757             if (altmsg
 758                     && mp
 759                     && !is_readonly(mp)
 760                     && stat (linkpath, &st) != NOTOK
 761                     && st.st_nlink == 1
 762                     && (unlink (altpath) == NOTOK
 763                         || link (linkpath, altpath) == NOTOK))
 764                 advise (linkpath, "unable to update %s from", altmsg);
 765 #endif /* HAVE_LSTAT */
 766     }
 767
 768     /* normally, we remember which editor we used */
 769     if (save_editor)
 770         edsave = getcpy (*ed);
 771
 772     *ed = NULL;
 773     if (altmsg)
 774         unlink (linkpath);
 775
 776     return status;
 777 }
 778
 779
 780 #ifdef HAVE_LSTAT
 781 static int
 782 copyf (char *ifile, char *ofile)
 783 {
 784     int i, in, out;
 785     char buffer[BUFSIZ];
 786
 787     if ((in = open (ifile, O_RDONLY)) == NOTOK)
 788         return NOTOK;
 789     if ((out = open (ofile, O_WRONLY | O_TRUNC)) == NOTOK) {
 790         admonish (ofile, "unable to open and truncate");
 791         close (in);
 792         return NOTOK;
 793     }
 794
 795     while ((i = read (in, buffer, sizeof(buffer))) > OK)
 796         if (write (out, buffer, i) != i) {
 797             advise (ofile, "may have damaged");
 798             i = NOTOK;
 799             break;
 800         }
 801
 802     close (in);
 803     close (out);
 804     return i;
 805 }
 806 #endif /* HAVE_LSTAT */
 807
 808
 809 /*
 810  * SEND
 811  */
 812
 813 static int
 814 sendfile (char **arg, char *file, int pushsw)
 815 {
 816     pid_t child_id;
 817     int i, vecp;
 818     char *cp, *sp, *vec[MAXARGS];
 819
 820     /* Translate MIME composition file, if necessary */
 821     if ((cp = context_find ("automimeproc"))
 822             && (!strcmp (cp, "1"))
 823             && !getenv ("NOMHNPROC")
 824             && check_draft (file)
 825             && (buildfile (NULL, file) == NOTOK))
 826         return 0;
 827
 828     /* For backwards compatibility */
 829     if ((cp = context_find ("automhnproc"))
 830             && !getenv ("NOMHNPROC")
 831             && check_draft (file)
 832             && (i = editfile (&cp, NULL, file, NOUSE, NULL, NULL, NULL, 0)))
 833         return 0;
 834
 835     /*
 836      * If the sendproc is the nmh command `send', then we call
 837      * those routines directly rather than exec'ing the command.
 838      */
 839     if (strcmp (sp = r1bindex (sendproc, '/'), "send") == 0) {
 840         cp = invo_name;
 841         sendit (invo_name = sp, arg, file, pushsw);
 842         invo_name = cp;
 843         return 1;
 844     }
 845
 846     context_save ();    /* save the context file */
 847     fflush (stdout);
 848
 849     for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 850         sleep (5);
 851     switch (child_id) {
 852         case NOTOK:
 853             advise (NULL, "unable to fork, so sending directly...");
 854         case OK:
 855             vecp = 0;
 856             vec[vecp++] = invo_name;
 857             if (pushsw)
 858                 vec[vecp++] = "-push";
 859             if (arg)
 860                 while (*arg)
 861                     vec[vecp++] = *arg++;
 862             vec[vecp++] = file;
 863             vec[vecp] = NULL;
 864
 865             execvp (sendproc, vec);
 866             fprintf (stderr, "unable to exec ");
 867             perror (sendproc);
 868             _exit (-1);
 869
 870         default:
 871             if (pidwait(child_id, OK) == 0)
 872                 done (0);
 873             return 1;
 874     }
 875 }
 876
 877
 878 /*
 879  * Translate MIME composition file (call buildmimeproc)
 880  */
 881
 882 static int
 883 buildfile (char **argp, char *file)
 884 {
 885     int i;
 886     char **args, *ed;
 887
 888     ed = buildmimeproc;
 889
 890     /* allocate space for arguments */
 891     i = 0;
 892     if (argp) {
 893         while (argp[i])
 894             i++;
 895     }
 896     args = (char **) mh_xmalloc((i + 2) * sizeof(char *));
 897
 898     /*
 899      * For backward compatibility, we need to add -build
 900      * if we are using mhn as buildmimeproc
 901      */
 902     i = 0;
 903     if (strcmp (r1bindex (ed, '/'), "mhn") == 0)
 904         args[i++] = "-build";
 905
 906     /* copy any other arguments */
 907     while (argp && *argp)
 908         args[i++] = *argp++;
 909     args[i] = NULL;
 910
 911     i = editfile (&ed, args, file, NOUSE, NULL, NULL, NULL, 0);
 912     free (args);
 913
 914     return (i ? NOTOK : OK);
 915 }
 916
 917
 918 /*
 919  *  Check if draft is a mhbuild composition file
 920  */
 921
 922 static int
 923 check_draft (char *msgnam)
 924 {
 925     int state;
 926     char buf[BUFSIZ], name[NAMESZ];
 927     FILE *fp;
 928
 929     if ((fp = fopen (msgnam, "r")) == NULL)
 930         return 0;
 931     for (state = FLD;;)
 932         switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
 933             case FLD:
 934             case FLDPLUS:
 935             case FLDEOF:
 936                 /*
 937                  * If draft already contains any of the
 938                  * Content-XXX fields, then assume it already
 939                  * been converted.
 940                  */
 941                 if (uprf (name, XXX_FIELD_PRF)) {
 942                     fclose (fp);
 943                     return 0;
 944                 }
 945                 while (state == FLDPLUS)
 946                     state = m_getfld (state, name, buf, sizeof(buf), fp);
 947                 break;
 948
 949             case BODY:
 950                 do {
 951                     char *bp;
 952
 953                     for (bp = buf; *bp; bp++)
 954                         if (*bp != ' ' && *bp != '\t' && *bp != '\n') {
 955                             fclose (fp);
 956                             return 1;
 957                         }
 958
 959                     state = m_getfld (state, name, buf, sizeof(buf), fp);
 960                 } while (state == BODY);
 961                 /* and fall... */
 962
 963             default:
 964                 fclose (fp);
 965                 return 0;
 966         }
 967 }
 968
 969
 970 #ifndef CYRUS_SASL
 971 # define SASLminc(a) (a)
 972 #else /* CYRUS_SASL */
 973 # define SASLminc(a)  0
 974 #endif /* CYRUS_SASL */
 975
 976 #ifndef TLS_SUPPORT
 977 # define TLSminc(a)  (a)
 978 #else /* TLS_SUPPORT */
 979 # define TLSminc(a)   0
 980 #endif /* TLS_SUPPORT */
 981
 982 static struct swit  sendswitches[] = {
 983 #define ALIASW            0
 984     { "alias aliasfile", 0 },
 985 #define DEBUGSW           1
 986     { "debug", -5 },
 987 #define FILTSW            2
 988     { "filter filterfile", 0 },
 989 #define NFILTSW           3
 990     { "nofilter", 0 },
 991 #define FRMTSW            4
 992     { "format", 0 },
 993 #define NFRMTSW           5
 994     { "noformat", 0 },
 995 #define FORWSW            6
 996     { "forward", 0 },
 997 #define NFORWSW           7
 998     { "noforward", 0 },
 999 #define MIMESW            8
1000     { "mime", 0 },
1001 #define NMIMESW           9
1002     { "nomime", 0 },
1003 #define MSGDSW           10
1004     { "msgid", 0 },
1005 #define NMSGDSW          11
1006     { "nomsgid", 0 },
1007 #define SPSHSW           12
1008     { "push", 0 },
1009 #define NSPSHSW          13
1010     { "nopush", 0 },
1011 #define SPLITSW          14
1012     { "split seconds", 0 },
1013 #define UNIQSW           15
1014     { "unique", -6 },
1015 #define NUNIQSW          16
1016     { "nounique", -8 },
1017 #define VERBSW           17
1018     { "verbose", 0 },
1019 #define NVERBSW          18
1020     { "noverbose", 0 },
1021 #define WATCSW           19
1022     { "watch", 0 },
1023 #define NWATCSW          20
1024     { "nowatch", 0 },
1025 #define WIDTHSW          21
1026     { "width columns", 0 },
1027 #define SVERSIONSW       22
1028     { "version", 0 },
1029 #define SHELPSW          23
1030     { "help", 0 },
1031 #define BITSTUFFSW       24
1032     { "dashstuffing", -12 },
1033 #define NBITSTUFFSW      25
1034     { "nodashstuffing", -14 },
1035 #define MAILSW           26
1036     { "mail", -4 },
1037 #define SAMLSW           27
1038     { "saml", -4 },
1039 #define SSNDSW           28
1040     { "send", -4 },
1041 #define SOMLSW           29
1042     { "soml", -4 },
1043 #define CLIESW           30
1044     { "client host", -6 },
1045 #define SERVSW           31
1046     { "server host", 6 },
1047 #define SNOOPSW          32
1048     { "snoop", -5 },
1049 #define SDRFSW           33
1050     { "draftfolder +folder", -6 },
1051 #define SDRMSW           34
1052     { "draftmessage msg", -6 },
1053 #define SNDRFSW          35
1054     { "nodraftfolder", -3 },
1055 #define SASLSW           36
1056     { "sasl", SASLminc(-4) },
1057 #define NOSASLSW         37
1058     { "nosasl", SASLminc(-6) },
1059 #define SASLMXSSFSW      38
1060     { "saslmaxssf", SASLminc(-10) },
1061 #define SASLMECHSW       39
1062     { "saslmech", SASLminc(-5) },
1063 #define USERSW           40
1064     { "user", SASLminc(-4) },
1065 #define SNDATTACHSW       41
1066     { "attach file", 6 },
1067 #define SNDATTACHFORMAT   42
1068     { "attachformat", 7 },
1069 #define PORTSW            43
1070     { "port server-port-name/number", 4 },
1071 #define TLSSW             44
1072     { "tls", TLSminc(-3) },
1073     { NULL, 0 }
1074 };
1075
1076
1077 extern int debugsw;             /* from sendsbr.c */
1078 extern int forwsw;
1079 extern int inplace;
1080 extern int pushsw;
1081 extern int splitsw;
1082 extern int unique;
1083 extern int verbsw;
1084
1085 extern char *altmsg;            /*  .. */
1086 extern char *annotext;
1087 extern char *distfile;
1088
1089
1090 static void
1091 sendit (char *sp, char **arg, char *file, int pushed)
1092 {
1093     int vecp, n = 1;
1094     char *cp, buf[BUFSIZ], **argp;
1095     char **arguments, *vec[MAXARGS];
1096     struct stat st;
1097     char        *attach = (char *)0;    /* attachment header field name */
1098     int         attachformat = 0;       /* mhbuild format specifier for
1099                                            attachments */
1100
1101 #ifndef lint
1102     int distsw = 0;
1103 #endif
1104
1105     /*
1106      * Make sure these are defined.  In particular, we need
1107      * vec[1] to be NULL, in case "arg" is NULL below.  It
1108      * doesn't matter what is the value of vec[0], but we
1109      * set it to NULL, to help catch "off-by-one" errors.
1110      */
1111     vec[0] = NULL;
1112     vec[1] = NULL;
1113
1114     /*
1115      * Temporarily copy arg to vec, since the brkstring() call in
1116      * getarguments() will wipe it out before it is merged in.
1117      * Also, we skip the first element of vec, since getarguments()
1118      * skips it.  Then we count the number of arguments
1119      * copied.  The value of "n" will be one greater than
1120      * this in order to simulate the standard argc/argv.
1121      */
1122     if (arg) {
1123         char **bp;
1124
1125         copyip (arg, vec+1, MAXARGS-1);
1126         bp = vec+1;
1127         while (*bp++)
1128             n++;
1129     }
1130
1131     /*
1132      * Merge any arguments from command line (now in vec)
1133      * and arguments from profile.
1134      */
1135     arguments = getarguments (sp, n, vec, 1);
1136     argp = arguments;
1137
1138     debugsw = 0;
1139     forwsw = 1;
1140     inplace = 1;
1141     unique = 0;
1142
1143     altmsg = NULL;
1144     annotext = NULL;
1145     distfile = NULL;
1146
1147     vecp = 1;                   /* we'll get the zero'th element later */
1148     vec[vecp++] = "-library";
1149     vec[vecp++] = getcpy (m_maildir (""));
1150
1151     if ((cp = context_find ("fileproc"))) {
1152       vec[vecp++] = "-fileproc";
1153       vec[vecp++] = cp;
1154     }
1155
1156     if ((cp = context_find ("mhlproc"))) {
1157       vec[vecp++] = "-mhlproc";
1158       vec[vecp++] = cp;
1159     }
1160
1161     while ((cp = *argp++)) {
1162         if (*cp == '-') {
1163             switch (smatch (++cp, sendswitches)) {
1164                 case AMBIGSW:
1165                     ambigsw (cp, sendswitches);
1166                     return;
1167                 case UNKWNSW:
1168                     advise (NULL, "-%s unknown\n", cp);
1169                     return;
1170
1171                 case SHELPSW:
1172                     snprintf (buf, sizeof(buf), "%s [switches]", sp);
1173                     print_help (buf, sendswitches, 1);
1174                     return;
1175                 case SVERSIONSW:
1176                     print_version (invo_name);
1177                     return;
1178
1179                 case SPSHSW:
1180                     pushed++;
1181                     continue;
1182                 case NSPSHSW:
1183                     pushed = 0;
1184                     continue;
1185
1186                 case SPLITSW:
1187                     if (!(cp = *argp++) || sscanf (cp, "%d", &splitsw) != 1) {
1188                         advise (NULL, "missing argument to %s", argp[-2]);
1189                         return;
1190                     }
1191                     continue;
1192
1193                 case UNIQSW:
1194                     unique++;
1195                     continue;
1196                 case NUNIQSW:
1197                     unique = 0;
1198                     continue;
1199                 case FORWSW:
1200                     forwsw++;
1201                     continue;
1202                 case NFORWSW:
1203                     forwsw = 0;
1204                     continue;
1205
1206                 case VERBSW:
1207                     verbsw++;
1208                     vec[vecp++] = --cp;
1209                     continue;
1210                 case NVERBSW:
1211                     verbsw = 0;
1212                     vec[vecp++] = --cp;
1213                     continue;
1214
1215                 case DEBUGSW:
1216                     debugsw++;  /* fall */
1217                 case NFILTSW:
1218                 case FRMTSW:
1219                 case NFRMTSW:
1220                 case BITSTUFFSW:
1221                 case NBITSTUFFSW:
1222                 case MIMESW:
1223                 case NMIMESW:
1224                 case MSGDSW:
1225                 case NMSGDSW:
1226                 case WATCSW:
1227                 case NWATCSW:
1228                 case MAILSW:
1229                 case SAMLSW:
1230                 case SSNDSW:
1231                 case SOMLSW:
1232                 case SNOOPSW:
1233                 case SASLSW:
1234                 case NOSASLSW:
1235                 case TLSSW:
1236                     vec[vecp++] = --cp;
1237                     continue;
1238
1239                 case ALIASW:
1240                 case FILTSW:
1241                 case WIDTHSW:
1242                 case CLIESW:
1243                 case SERVSW:
1244                 case SASLMXSSFSW:
1245                 case SASLMECHSW:
1246                 case USERSW:
1247                 case PORTSW:
1248                     vec[vecp++] = --cp;
1249                     if (!(cp = *argp++) || *cp == '-') {
1250                         advise (NULL, "missing argument to %s", argp[-2]);
1251                         return;
1252                     }
1253                     vec[vecp++] = cp;
1254                     continue;
1255
1256                 case SDRFSW:
1257                 case SDRMSW:
1258                     if (!(cp = *argp++) || *cp == '-') {
1259                         advise (NULL, "missing argument to %s", argp[-2]);
1260                         return;
1261                     }
1262                 case SNDRFSW:
1263                     continue;
1264
1265                 case SNDATTACHSW:
1266                     if (!(attach = *argp++) || *attach == '-') {
1267                         advise (NULL, "missing argument to %s", argp[-2]);
1268                         return;
1269                     }
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 }