mail_cmds/mail/cmd1.c

   1 /*-
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 #if 0
  36 static char sccsid[] = "@(#)cmd1.c      8.2 (Berkeley) 4/20/95";
  37 #endif
  38 static const char rcsid[] =
  39   "$FreeBSD: src/usr.bin/mail/cmd1.c,v 1.7 2002/06/30 05:25:05 obrien Exp $";
  40 #endif /* not lint */
  41
  42 #include <sys/cdefs.h>
  43
  44 #include "rcv.h"
  45 #include "extern.h"
  46
  47 /*
  48  * Mail -- a mail program
  49  *
  50  * User commands.
  51  */
  52
  53 extern const struct cmd cmdtab[];
  54
  55 /*
  56  * Print the current active headings.
  57  * Don't change dot if invoker didn't give an argument.
  58  */
  59
  60 static int screen;
  61
  62 int
  63 headers(msgvec)
  64         int *msgvec;
  65 {
  66         int n, mesg, flag, size;
  67         struct message *mp;
  68
  69         size = screensize();
  70         n = msgvec[0];
  71         if (n != 0)
  72                 screen = (n-1)/size;
  73         if (screen < 0)
  74                 screen = 0;
  75         mp = &message[screen * size];
  76         if (mp >= &message[msgCount])
  77                 mp = &message[msgCount - size];
  78         if (mp < &message[0])
  79                 mp = &message[0];
  80         flag = 0;
  81         mesg = mp - &message[0];
  82         if (dot != &message[n-1])
  83                 dot = mp;
  84         for (; mp < &message[msgCount]; mp++) {
  85                 mesg++;
  86                 if (mp->m_flag & MDELETED)
  87                         continue;
  88                 if (flag++ >= size)
  89                         break;
  90                 printhead(mesg);
  91         }
  92         if (flag == 0) {
  93                 printf("No more mail.\n");
  94                 return (1);
  95         }
  96         return (0);
  97 }
  98
  99 /*
 100  * Scroll to the next/previous screen
 101  */
 102 int
 103 scroll(arg)
 104         char arg[];
 105 {
 106         int s, size;
 107         int cur[1];
 108
 109         cur[0] = 0;
 110         size = screensize();
 111         s = screen;
 112         switch (*arg) {
 113         case 0:
 114         case '+':
 115                 s++;
 116                 if (s * size >= msgCount) {
 117                         printf("On last screenful of messages\n");
 118                         return (0);
 119                 }
 120                 screen = s;
 121                 break;
 122
 123         case '-':
 124                 if (--s < 0) {
 125                         printf("On first screenful of messages\n");
 126                         return (0);
 127                 }
 128                 screen = s;
 129                 break;
 130
 131         default:
 132                 printf("Unrecognized scrolling command \"%s\"\n", arg);
 133                 return (1);
 134         }
 135         return (headers(cur));
 136 }
 137
 138 /*
 139  * Compute screen size.
 140  */
 141 int
 142 screensize()
 143 {
 144         int s;
 145         char *cp;
 146
 147         if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
 148                 return (s);
 149         return (screenheight - 4);
 150 }
 151
 152 /*
 153  * Print out the headlines for each message
 154  * in the passed message list.
 155  */
 156 int
 157 from(msgvec)
 158         int *msgvec;
 159 {
 160         int *ip;
 161
 162         for (ip = msgvec; *ip != 0; ip++)
 163                 printhead(*ip);
 164         if (--ip >= msgvec)
 165                 dot = &message[*ip - 1];
 166         return (0);
 167 }
 168
 169 /*
 170  * Print out the header of a specific message.
 171  * This is a slight improvement to the standard one.
 172  */
 173 void
 174 printhead(mesg)
 175         int mesg;
 176 {
 177         struct message *mp;
 178         char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
 179         char pbuf[BUFSIZ];
 180         struct headline hl;
 181         int subjlen;
 182         char *name;
 183
 184         mp = &message[mesg-1];
 185         (void)readline(setinput(mp), headline, LINESIZE);
 186         if ((subjline = hfield("subject", mp)) == NULL)
 187                 subjline = hfield("subj", mp);
 188         /*
 189          * Bletch!
 190          */
 191         curind = dot == mp ? '>' : ' ';
 192         dispc = ' ';
 193         if (mp->m_flag & MSAVED)
 194                 dispc = '*';
 195         if (mp->m_flag & MPRESERVE)
 196                 dispc = 'P';
 197         if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
 198                 dispc = 'N';
 199         if ((mp->m_flag & (MREAD|MNEW)) == 0)
 200                 dispc = 'U';
 201         if (mp->m_flag & MBOX)
 202                 dispc = 'M';
 203         parse(headline, &hl, pbuf);
 204         sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
 205         subjlen = screenwidth - 50 - strlen(wcount);
 206         name = value("show-rcpt") != NULL ?
 207                 skin(hfield("to", mp)) : nameof(mp, 0);
 208         if (subjline == NULL || subjlen < 0)            /* pretty pathetic */
 209                 printf("%c%c%3d %-20.20s  %16.16s %s\n",
 210                         curind, dispc, mesg, name, hl.l_date, wcount);
 211         else
 212                 printf("%c%c%3d %-20.20s  %16.16s %s \"%.*s\"\n",
 213                         curind, dispc, mesg, name, hl.l_date, wcount,
 214                         subjlen, subjline);
 215 }
 216
 217 /*
 218  * Print out the value of dot.
 219  */
 220 int
 221 pdot()
 222 {
 223         printf("%ld\n", (uintptr_t)dot - (uintptr_t)&message[0] + 1);
 224         return (0);
 225 }
 226
 227 /*
 228  * Print out all the possible commands.
 229  */
 230 int
 231 pcmdlist()
 232 {
 233         const struct cmd *cp;
 234         int cc;
 235
 236         printf("Commands are:\n");
 237         for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
 238                 cc += strlen(cp->c_name) + 2;
 239                 if (cc > 72) {
 240                         printf("\n");
 241                         cc = strlen(cp->c_name) + 2;
 242                 }
 243                 if ((cp+1)->c_name != NULL)
 244                         printf("%s, ", cp->c_name);
 245                 else
 246                         printf("%s\n", cp->c_name);
 247         }
 248         return (0);
 249 }
 250
 251 /*
 252  * Paginate messages, honor ignored fields.
 253  */
 254 int
 255 more(msgvec)
 256         int *msgvec;
 257 {
 258
 259         return (type1(msgvec, 1, 1));
 260 }
 261
 262 /*
 263  * Paginate messages, even printing ignored fields.
 264  */
 265 int
 266 More(msgvec)
 267         int *msgvec;
 268 {
 269
 270         return (type1(msgvec, 0, 1));
 271 }
 272
 273 /*
 274  * Type out messages, honor ignored fields.
 275  */
 276 int
 277 type(msgvec)
 278         int *msgvec;
 279 {
 280
 281         return (type1(msgvec, 1, 0));
 282 }
 283
 284 /*
 285  * Type out messages, even printing ignored fields.
 286  */
 287 int
 288 Type(msgvec)
 289         int *msgvec;
 290 {
 291
 292         return (type1(msgvec, 0, 0));
 293 }
 294
 295 /*
 296  * Type out the messages requested.
 297  */
 298 jmp_buf pipestop;
 299 int
 300 type1(msgvec, doign, page)
 301         int *msgvec;
 302         int doign, page;
 303 {
 304         int nlines, *ip;
 305         struct message *mp;
 306         char *cp;
 307         FILE *obuf;
 308
 309         obuf = stdout;
 310         if (setjmp(pipestop))
 311                 goto close_pipe;
 312         if (value("interactive") != NULL &&
 313             (page || (cp = value("crt")) != NULL)) {
 314                 nlines = 0;
 315                 if (!page) {
 316                         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
 317                                 nlines += message[*ip - 1].m_lines;
 318                 }
 319                 if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
 320                         cp = value("PAGER");
 321                         if (cp == NULL || *cp == '\0')
 322                                 cp = _PATH_MORE;
 323                         obuf = Popen(cp, "w");
 324                         if (obuf == NULL) {
 325                                 warnx("%s", cp);
 326                                 obuf = stdout;
 327                         } else
 328                                 (void)signal(SIGPIPE, brokpipe);
 329                 }
 330         }
 331
 332         /*
 333          * Send messages to the output.
 334          *
 335          */
 336         for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
 337                 mp = &message[*ip - 1];
 338                 touch(mp);
 339                 dot = mp;
 340                 if (value("quiet") == NULL)
 341                         fprintf(obuf, "Message %d:\n", *ip);
 342                 (void)sendmessage(mp, obuf, doign ? ignore : 0, NULL);
 343         }
 344
 345 close_pipe:
 346         if (obuf != stdout) {
 347                 /*
 348                  * Ignore SIGPIPE so it can't cause a duplicate close.
 349                  */
 350                 (void)signal(SIGPIPE, SIG_IGN);
 351                 (void)Pclose(obuf);
 352                 (void)signal(SIGPIPE, SIG_DFL);
 353         }
 354         return (0);
 355 }
 356
 357 /*
 358  * Respond to a broken pipe signal --
 359  * probably caused by quitting more.
 360  */
 361 /*ARGSUSED*/
 362 void
 363 brokpipe(signo)
 364         int signo;
 365 {
 366         longjmp(pipestop, 1);
 367 }
 368
 369 /*
 370  * Print the top so many lines of each desired message.
 371  * The number of lines is taken from the variable "toplines"
 372  * and defaults to 5.
 373  */
 374 int
 375 top(msgvec)
 376         int *msgvec;
 377 {
 378         int *ip;
 379         struct message *mp;
 380         int c, topl, lines, lineb;
 381         char *valtop, linebuf[LINESIZE];
 382         FILE *ibuf;
 383
 384         topl = 5;
 385         valtop = value("toplines");
 386         if (valtop != NULL) {
 387                 topl = atoi(valtop);
 388                 if (topl < 0 || topl > 10000)
 389                         topl = 5;
 390         }
 391         lineb = 1;
 392         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
 393                 mp = &message[*ip - 1];
 394                 touch(mp);
 395                 dot = mp;
 396                 if (value("quiet") == NULL)
 397                         printf("Message %d:\n", *ip);
 398                 ibuf = setinput(mp);
 399                 c = mp->m_lines;
 400                 if (!lineb)
 401                         printf("\n");
 402                 for (lines = 0; lines < c && lines <= topl; lines++) {
 403                         if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
 404                                 break;
 405                         puts(linebuf);
 406                         lineb = strspn(linebuf, " \t") == strlen(linebuf);
 407                 }
 408         }
 409         return (0);
 410 }
 411
 412 /*
 413  * Touch all the given messages so that they will
 414  * get mboxed.
 415  */
 416 int
 417 stouch(msgvec)
 418         int msgvec[];
 419 {
 420         int *ip;
 421
 422         for (ip = msgvec; *ip != 0; ip++) {
 423                 dot = &message[*ip-1];
 424                 dot->m_flag |= MTOUCH;
 425                 dot->m_flag &= ~MPRESERVE;
 426         }
 427         return (0);
 428 }
 429
 430 /*
 431  * Make sure all passed messages get mboxed.
 432  */
 433 int
 434 mboxit(msgvec)
 435         int msgvec[];
 436 {
 437         int *ip;
 438
 439         for (ip = msgvec; *ip != 0; ip++) {
 440                 dot = &message[*ip-1];
 441                 dot->m_flag |= MTOUCH|MBOX;
 442                 dot->m_flag &= ~MPRESERVE;
 443         }
 444         return (0);
 445 }
 446
 447 /*
 448  * List the folders the user currently has.
 449  */
 450 int
 451 folders()
 452 {
 453         char dirname[PATHSIZE];
 454         char *cmd;
 455
 456         if (getfold(dirname, sizeof(dirname)) < 0) {
 457                 printf("No value set for \"folder\"\n");
 458                 return (1);
 459         }
 460         if ((cmd = value("LISTER")) == NULL)
 461                 cmd = "ls";
 462         (void)run_command(cmd, 0, -1, -1, dirname, NULL, NULL);
 463         return (0);
 464 }
 465
 466 /*
 467  * Update the mail file with any new messages that have
 468  * come in since we started reading mail.
 469  */
 470 int
 471 inc(v)
 472         void *v;
 473 {
 474         int nmsg, mdot;
 475
 476         nmsg = incfile();
 477
 478         if (nmsg == 0)
 479                 printf("No new mail.\n");
 480         else if (nmsg > 0) {
 481                 mdot = newfileinfo(msgCount - nmsg);
 482                 dot = &message[mdot - 1];
 483         } else
 484                 printf("\"inc\" command failed...\n");
 485
 486         return (0);
 487 }