usr.bin/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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)cmd1.c   8.2 (Berkeley) 4/20/95
  30  * $FreeBSD: src/usr.bin/mail/cmd1.c,v 1.3.6.3 2003/01/06 05:46:03 mikeh Exp $
  31  */
  32
  33 #include "rcv.h"
  34 #include "extern.h"
  35
  36 /*
  37  * Mail -- a mail program
  38  *
  39  * User commands.
  40  */
  41
  42 extern const struct cmd cmdtab[];
  43
  44 /*
  45  * Print the current active headings.
  46  * Don't change dot if invoker didn't give an argument.
  47  */
  48
  49 static int screen;
  50
  51 int
  52 headers(int *msgvec)
  53 {
  54         int n, mesg, flag, size;
  55         struct message *mp;
  56
  57         size = screensize();
  58         n = msgvec[0];
  59         if (n != 0)
  60                 screen = (n-1)/size;
  61         if (screen < 0)
  62                 screen = 0;
  63         mp = &message[screen * size];
  64         if (mp >= &message[msgCount])
  65                 mp = &message[msgCount - size];
  66         if (mp < &message[0])
  67                 mp = &message[0];
  68         flag = 0;
  69         mesg = mp - &message[0];
  70         if (dot != &message[n-1])
  71                 dot = mp;
  72         for (; mp < &message[msgCount]; mp++) {
  73                 mesg++;
  74                 if (mp->m_flag & MDELETED)
  75                         continue;
  76                 if (flag++ >= size)
  77                         break;
  78                 printhead(mesg);
  79         }
  80         if (flag == 0) {
  81                 printf("No more mail.\n");
  82                 return (1);
  83         }
  84         return (0);
  85 }
  86
  87 /*
  88  * Scroll to the next/previous screen
  89  */
  90 int
  91 scroll(char *arg)
  92 {
  93         int s, size;
  94         int cur[1];
  95
  96         cur[0] = 0;
  97         size = screensize();
  98         s = screen;
  99         switch (*arg) {
 100         case 0:
 101         case '+':
 102                 s++;
 103                 if (s * size >= msgCount) {
 104                         printf("On last screenful of messages\n");
 105                         return (0);
 106                 }
 107                 screen = s;
 108                 break;
 109
 110         case '-':
 111                 if (--s < 0) {
 112                         printf("On first screenful of messages\n");
 113                         return (0);
 114                 }
 115                 screen = s;
 116                 break;
 117
 118         default:
 119                 printf("Unrecognized scrolling command \"%s\"\n", arg);
 120                 return (1);
 121         }
 122         return (headers(cur));
 123 }
 124
 125 /*
 126  * Compute screen size.
 127  */
 128 int
 129 screensize(void)
 130 {
 131         int s;
 132         char *cp;
 133
 134         if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
 135                 return (s);
 136         return (screenheight - 4);
 137 }
 138
 139 /*
 140  * Print out the headlines for each message
 141  * in the passed message list.
 142  */
 143 int
 144 from(int *msgvec)
 145 {
 146         int *ip;
 147
 148         for (ip = msgvec; *ip != 0; ip++)
 149                 printhead(*ip);
 150         if (--ip >= msgvec)
 151                 dot = &message[*ip - 1];
 152         return (0);
 153 }
 154
 155 /*
 156  * Print out the header of a specific message.
 157  * This is a slight improvement to the standard one.
 158  */
 159 void
 160 printhead(int mesg)
 161 {
 162         struct message *mp;
 163         char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
 164         char pbuf[BUFSIZ];
 165         struct headline hl;
 166         int subjlen;
 167         char *name;
 168
 169         mp = &message[mesg-1];
 170         readline(setinput(mp), headline, LINESIZE);
 171         if ((subjline = hfield("subject", mp)) == NULL)
 172                 subjline = hfield("subj", mp);
 173         /*
 174          * Bletch!
 175          */
 176         curind = dot == mp ? '>' : ' ';
 177         dispc = ' ';
 178         if (mp->m_flag & MSAVED)
 179                 dispc = '*';
 180         if (mp->m_flag & MPRESERVE)
 181                 dispc = 'P';
 182         if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
 183                 dispc = 'N';
 184         if ((mp->m_flag & (MREAD|MNEW)) == 0)
 185                 dispc = 'U';
 186         if (mp->m_flag & MBOX)
 187                 dispc = 'M';
 188         parse(headline, &hl, pbuf);
 189         sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
 190         subjlen = screenwidth - 50 - strlen(wcount);
 191         name = value("show-rcpt") != NULL ?
 192                 skin(hfield("to", mp)) : nameof(mp, 0);
 193         if (subjline == NULL || subjlen < 0)            /* pretty pathetic */
 194                 printf("%c%c%3d %-20.20s  %16.16s %s\n",
 195                         curind, dispc, mesg, name, hl.l_date, wcount);
 196         else
 197                 printf("%c%c%3d %-20.20s  %16.16s %s \"%.*s\"\n",
 198                         curind, dispc, mesg, name, hl.l_date, wcount,
 199                         subjlen, subjline);
 200 }
 201
 202 /*
 203  * Print out the value of dot.
 204  */
 205 int
 206 pdot(void)
 207 {
 208         printf("%td\n", dot - &message[0] + 1);
 209         return (0);
 210 }
 211
 212 /*
 213  * Print out all the possible commands.
 214  */
 215 int
 216 pcmdlist(void)
 217 {
 218         const struct cmd *cp;
 219         int cc;
 220
 221         printf("Commands are:\n");
 222         for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
 223                 cc += strlen(cp->c_name) + 2;
 224                 if (cc > 72) {
 225                         printf("\n");
 226                         cc = strlen(cp->c_name) + 2;
 227                 }
 228                 if ((cp+1)->c_name != NULL)
 229                         printf("%s, ", cp->c_name);
 230                 else
 231                         printf("%s\n", cp->c_name);
 232         }
 233         return (0);
 234 }
 235
 236 /*
 237  * Paginate messages, honor ignored fields.
 238  */
 239 int
 240 more(int *msgvec)
 241 {
 242         return (type1(msgvec, 1, 1));
 243 }
 244
 245 /*
 246  * Paginate messages, even printing ignored fields.
 247  */
 248 int
 249 More(int *msgvec)
 250 {
 251         return (type1(msgvec, 0, 1));
 252 }
 253
 254 /*
 255  * Type out messages, honor ignored fields.
 256  */
 257 int
 258 type(int *msgvec)
 259 {
 260         return (type1(msgvec, 1, 0));
 261 }
 262
 263 /*
 264  * Type out messages, even printing ignored fields.
 265  */
 266 int
 267 Type(int *msgvec)
 268 {
 269         return (type1(msgvec, 0, 0));
 270 }
 271
 272 /*
 273  * Type out the messages requested.
 274  */
 275 jmp_buf pipestop;
 276 int
 277 type1(int *msgvec, int doign, int page)
 278 {
 279         int nlines, *ip;
 280         struct message *mp;
 281         char *cp;
 282         FILE *obuf;
 283
 284         obuf = stdout;
 285         if (setjmp(pipestop))
 286                 goto close_pipe;
 287         if (value("interactive") != NULL &&
 288             (page || (cp = value("crt")) != NULL)) {
 289                 nlines = 0;
 290                 if (!page) {
 291                         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
 292                                 nlines += message[*ip - 1].m_lines;
 293                 }
 294                 if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
 295                         cp = value("PAGER");
 296                         if (cp == NULL || *cp == '\0')
 297                                 cp = _PATH_MORE;
 298                         obuf = Popen(cp, "w");
 299                         if (obuf == NULL) {
 300                                 warnx("%s", cp);
 301                                 obuf = stdout;
 302                         } else
 303                                 signal(SIGPIPE, brokpipe);
 304                 }
 305         }
 306
 307         /*
 308          * Send messages to the output.
 309          *
 310          */
 311         for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
 312                 mp = &message[*ip - 1];
 313                 touch(mp);
 314                 dot = mp;
 315                 if (value("quiet") == NULL)
 316                         fprintf(obuf, "Message %d:\n", *ip);
 317                 sendmessage(mp, obuf, doign ? ignore : 0, NULL);
 318         }
 319
 320 close_pipe:
 321         if (obuf != stdout) {
 322                 /*
 323                  * Ignore SIGPIPE so it can't cause a duplicate close.
 324                  */
 325                 signal(SIGPIPE, SIG_IGN);
 326                 Pclose(obuf);
 327                 signal(SIGPIPE, SIG_DFL);
 328         }
 329         return (0);
 330 }
 331
 332 /*
 333  * Respond to a broken pipe signal --
 334  * probably caused by quitting more.
 335  */
 336 /*ARGSUSED*/
 337 void
 338 brokpipe(int signo)
 339 {
 340         longjmp(pipestop, 1);
 341 }
 342
 343 /*
 344  * Print the top so many lines of each desired message.
 345  * The number of lines is taken from the variable "toplines"
 346  * and defaults to 5.
 347  */
 348 int
 349 top(int *msgvec)
 350 {
 351         int *ip;
 352         struct message *mp;
 353         int c, topl, lines, lineb;
 354         char *valtop, linebuf[LINESIZE];
 355         FILE *ibuf;
 356
 357         topl = 5;
 358         valtop = value("toplines");
 359         if (valtop != NULL) {
 360                 topl = atoi(valtop);
 361                 if (topl < 0 || topl > 10000)
 362                         topl = 5;
 363         }
 364         lineb = 1;
 365         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
 366                 mp = &message[*ip - 1];
 367                 touch(mp);
 368                 dot = mp;
 369                 if (value("quiet") == NULL)
 370                         printf("Message %d:\n", *ip);
 371                 ibuf = setinput(mp);
 372                 c = mp->m_lines;
 373                 if (!lineb)
 374                         printf("\n");
 375                 for (lines = 0; lines < c && lines <= topl; lines++) {
 376                         if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
 377                                 break;
 378                         puts(linebuf);
 379                         lineb = strspn(linebuf, " \t") == strlen(linebuf);
 380                 }
 381         }
 382         return (0);
 383 }
 384
 385 /*
 386  * Touch all the given messages so that they will
 387  * get mboxed.
 388  */
 389 int
 390 stouch(int *msgvec)
 391 {
 392         int *ip;
 393
 394         for (ip = msgvec; *ip != 0; ip++) {
 395                 dot = &message[*ip-1];
 396                 dot->m_flag |= MTOUCH;
 397                 dot->m_flag &= ~MPRESERVE;
 398         }
 399         return (0);
 400 }
 401
 402 /*
 403  * Make sure all passed messages get mboxed.
 404  */
 405 int
 406 mboxit(int *msgvec)
 407 {
 408         int *ip;
 409
 410         for (ip = msgvec; *ip != 0; ip++) {
 411                 dot = &message[*ip-1];
 412                 dot->m_flag |= MTOUCH|MBOX;
 413                 dot->m_flag &= ~MPRESERVE;
 414         }
 415         return (0);
 416 }
 417
 418 /*
 419  * List the folders the user currently has.
 420  */
 421 int
 422 folders(void)
 423 {
 424         char dirname[PATHSIZE];
 425         char *cmd;
 426
 427         if (getfold(dirname, sizeof(dirname)) < 0) {
 428                 printf("No value set for \"folder\"\n");
 429                 return (1);
 430         }
 431         if ((cmd = value("LISTER")) == NULL)
 432                 cmd = "ls";
 433         run_command(cmd, 0, -1, -1, dirname, NULL, NULL);
 434         return (0);
 435 }
 436
 437 /*
 438  * Update the mail file with any new messages that have
 439  * come in since we started reading mail.
 440  */
 441 int
 442 inc(void *v)
 443 {
 444         int nmsg, mdot;
 445
 446         nmsg = incfile();
 447
 448         if (nmsg == 0)
 449                 printf("No new mail.\n");
 450         else if (nmsg > 0) {
 451                 mdot = newfileinfo(msgCount - nmsg);
 452                 dot = &message[mdot - 1];
 453         } else
 454                 printf("\"inc\" command failed...\n");
 455
 456         return (0);
 457 }