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  * 4. 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
  30 #ifndef lint
  31 #if 0
  32 static char sccsid[] = "@(#)cmd1.c      8.2 (Berkeley) 4/20/95";
  33 #endif
  34 #endif /* not lint */
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include "rcv.h"
  39 #include "extern.h"
  40
  41 /*
  42  * Mail -- a mail program
  43  *
  44  * User commands.
  45  */
  46
  47 extern const struct cmd cmdtab[];
  48
  49 /*
  50  * Print the current active headings.
  51  * Don't change dot if invoker didn't give an argument.
  52  */
  53
  54 static int screen;
  55
  56 int
  57 headers(int *msgvec)
  58 {
  59         int n, mesg, flag, size;
  60         struct message *mp;
  61
  62         size = screensize();
  63         n = msgvec[0];
  64         if (n != 0)
  65                 screen = (n-1)/size;
  66         if (screen < 0)
  67                 screen = 0;
  68         mp = &message[screen * size];
  69         if (mp >= &message[msgCount])
  70                 mp = &message[msgCount - size];
  71         if (mp < &message[0])
  72                 mp = &message[0];
  73         flag = 0;
  74         mesg = mp - &message[0];
  75         if (dot != &message[n-1])
  76                 dot = mp;
  77         for (; mp < &message[msgCount]; mp++) {
  78                 mesg++;
  79                 if (mp->m_flag & MDELETED)
  80                         continue;
  81                 if (flag++ >= size)
  82                         break;
  83                 printhead(mesg);
  84         }
  85         if (flag == 0) {
  86                 printf("No more mail.\n");
  87                 return (1);
  88         }
  89         return (0);
  90 }
  91
  92 /*
  93  * Scroll to the next/previous screen
  94  */
  95 int
  96 scroll(char arg[])
  97 {
  98         int s, size;
  99         int cur[1];
 100
 101         cur[0] = 0;
 102         size = screensize();
 103         s = screen;
 104         switch (*arg) {
 105         case 0:
 106         case '+':
 107                 s++;
 108                 if (s * size >= msgCount) {
 109                         printf("On last screenful of messages\n");
 110                         return (0);
 111                 }
 112                 screen = s;
 113                 break;
 114
 115         case '-':
 116                 if (--s < 0) {
 117                         printf("On first screenful of messages\n");
 118                         return (0);
 119                 }
 120                 screen = s;
 121                 break;
 122
 123         default:
 124                 printf("Unrecognized scrolling command \"%s\"\n", arg);
 125                 return (1);
 126         }
 127         return (headers(cur));
 128 }
 129
 130 /*
 131  * Compute screen size.
 132  */
 133 int
 134 screensize(void)
 135 {
 136         int s;
 137         char *cp;
 138
 139         if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
 140                 return (s);
 141         return (screenheight - 4);
 142 }
 143
 144 /*
 145  * Print out the headlines for each message
 146  * in the passed message list.
 147  */
 148 int
 149 from(int *msgvec)
 150 {
 151         int *ip;
 152
 153         for (ip = msgvec; *ip != 0; ip++)
 154                 printhead(*ip);
 155         if (--ip >= msgvec)
 156                 dot = &message[*ip - 1];
 157         return (0);
 158 }
 159
 160 /*
 161  * Print out the header of a specific message.
 162  * This is a slight improvement to the standard one.
 163  */
 164 void
 165 printhead(int mesg)
 166 {
 167         struct message *mp;
 168         char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
 169         char pbuf[BUFSIZ];
 170         struct headline hl;
 171         int subjlen;
 172         char *name;
 173
 174         mp = &message[mesg-1];
 175         (void)readline(setinput(mp), headline, LINESIZE);
 176         if ((subjline = hfield("subject", mp)) == NULL)
 177                 subjline = hfield("subj", mp);
 178         /*
 179          * Bletch!
 180          */
 181         curind = dot == mp ? '>' : ' ';
 182         dispc = ' ';
 183         if (mp->m_flag & MSAVED)
 184                 dispc = '*';
 185         if (mp->m_flag & MPRESERVE)
 186                 dispc = 'P';
 187         if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
 188                 dispc = 'N';
 189         if ((mp->m_flag & (MREAD|MNEW)) == 0)
 190                 dispc = 'U';
 191         if (mp->m_flag & MBOX)
 192                 dispc = 'M';
 193         parse(headline, &hl, pbuf);
 194         sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
 195         subjlen = screenwidth - 50 - strlen(wcount);
 196         name = value("show-rcpt") != NULL ?
 197                 skin(hfield("to", mp)) : nameof(mp, 0);
 198         if (subjline == NULL || subjlen < 0)            /* pretty pathetic */
 199                 printf("%c%c%3d %-20.20s  %16.16s %s\n",
 200                         curind, dispc, mesg, name, hl.l_date, wcount);
 201         else
 202                 printf("%c%c%3d %-20.20s  %16.16s %s \"%.*s\"\n",
 203                         curind, dispc, mesg, name, hl.l_date, wcount,
 204                         subjlen, subjline);
 205 }
 206
 207 /*
 208  * Print out the value of dot.
 209  */
 210 int
 211 pdot(void)
 212 {
 213         printf("%td\n", dot - &message[0] + 1);
 214         return (0);
 215 }
 216
 217 /*
 218  * Print out all the possible commands.
 219  */
 220 int
 221 pcmdlist(void)
 222 {
 223         const struct cmd *cp;
 224         int cc;
 225
 226         printf("Commands are:\n");
 227         for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
 228                 cc += strlen(cp->c_name) + 2;
 229                 if (cc > 72) {
 230                         printf("\n");
 231                         cc = strlen(cp->c_name) + 2;
 232                 }
 233                 if ((cp+1)->c_name != NULL)
 234                         printf("%s, ", cp->c_name);
 235                 else
 236                         printf("%s\n", cp->c_name);
 237         }
 238         return (0);
 239 }
 240
 241 /*
 242  * Paginate messages, honor ignored fields.
 243  */
 244 int
 245 more(int *msgvec)
 246 {
 247
 248         return (type1(msgvec, 1, 1));
 249 }
 250
 251 /*
 252  * Paginate messages, even printing ignored fields.
 253  */
 254 int
 255 More(int *msgvec)
 256 {
 257
 258         return (type1(msgvec, 0, 1));
 259 }
 260
 261 /*
 262  * Type out messages, honor ignored fields.
 263  */
 264 int
 265 type(int *msgvec)
 266 {
 267
 268         return (type1(msgvec, 1, 0));
 269 }
 270
 271 /*
 272  * Type out messages, even printing ignored fields.
 273  */
 274 int
 275 Type(int *msgvec)
 276 {
 277
 278         return (type1(msgvec, 0, 0));
 279 }
 280
 281 /*
 282  * Type out the messages requested.
 283  */
 284 static jmp_buf  pipestop;
 285 int
 286 type1(int *msgvec, int doign, int page)
 287 {
 288         int nlines, *ip;
 289         struct message *mp;
 290         char *cp;
 291         FILE *obuf;
 292
 293         obuf = stdout;
 294         if (setjmp(pipestop))
 295                 goto close_pipe;
 296         if (value("interactive") != NULL &&
 297             (page || (cp = value("crt")) != NULL)) {
 298                 nlines = 0;
 299                 if (!page) {
 300                         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
 301                                 nlines += message[*ip - 1].m_lines;
 302                 }
 303                 if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
 304                         cp = value("PAGER");
 305                         if (cp == NULL || *cp == '\0')
 306                                 cp = _PATH_MORE;
 307                         obuf = Popen(cp, "w");
 308                         if (obuf == NULL) {
 309                                 warnx("%s", cp);
 310                                 obuf = stdout;
 311                         } else
 312                                 (void)signal(SIGPIPE, brokpipe);
 313                 }
 314         }
 315
 316         /*
 317          * Send messages to the output.
 318          *
 319          */
 320         for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
 321                 mp = &message[*ip - 1];
 322                 touch(mp);
 323                 dot = mp;
 324                 if (value("quiet") == NULL)
 325                         fprintf(obuf, "Message %d:\n", *ip);
 326                 (void)sendmessage(mp, obuf, doign ? ignore : 0, NULL);
 327         }
 328
 329 close_pipe:
 330         if (obuf != stdout) {
 331                 /*
 332                  * Ignore SIGPIPE so it can't cause a duplicate close.
 333                  */
 334                 (void)signal(SIGPIPE, SIG_IGN);
 335                 (void)Pclose(obuf);
 336                 (void)signal(SIGPIPE, SIG_DFL);
 337         }
 338         return (0);
 339 }
 340
 341 /*
 342  * Respond to a broken pipe signal --
 343  * probably caused by quitting more.
 344  */
 345 /*ARGSUSED*/
 346 void
 347 brokpipe(int signo __unused)
 348 {
 349         longjmp(pipestop, 1);
 350 }
 351
 352 /*
 353  * Print the top so many lines of each desired message.
 354  * The number of lines is taken from the variable "toplines"
 355  * and defaults to 5.
 356  */
 357 int
 358 top(int *msgvec)
 359 {
 360         int *ip;
 361         struct message *mp;
 362         int c, topl, lines, lineb;
 363         char *valtop, linebuf[LINESIZE];
 364         FILE *ibuf;
 365
 366         topl = 5;
 367         valtop = value("toplines");
 368         if (valtop != NULL) {
 369                 topl = atoi(valtop);
 370                 if (topl < 0 || topl > 10000)
 371                         topl = 5;
 372         }
 373         lineb = 1;
 374         for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
 375                 mp = &message[*ip - 1];
 376                 touch(mp);
 377                 dot = mp;
 378                 if (value("quiet") == NULL)
 379                         printf("Message %d:\n", *ip);
 380                 ibuf = setinput(mp);
 381                 c = mp->m_lines;
 382                 if (!lineb)
 383                         printf("\n");
 384                 for (lines = 0; lines < c && lines <= topl; lines++) {
 385                         if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
 386                                 break;
 387                         puts(linebuf);
 388                         lineb = strspn(linebuf, " \t") == strlen(linebuf);
 389                 }
 390         }
 391         return (0);
 392 }
 393
 394 /*
 395  * Touch all the given messages so that they will
 396  * get mboxed.
 397  */
 398 int
 399 stouch(int msgvec[])
 400 {
 401         int *ip;
 402
 403         for (ip = msgvec; *ip != 0; ip++) {
 404                 dot = &message[*ip-1];
 405                 dot->m_flag |= MTOUCH;
 406                 dot->m_flag &= ~MPRESERVE;
 407         }
 408         return (0);
 409 }
 410
 411 /*
 412  * Make sure all passed messages get mboxed.
 413  */
 414 int
 415 mboxit(int msgvec[])
 416 {
 417         int *ip;
 418
 419         for (ip = msgvec; *ip != 0; ip++) {
 420                 dot = &message[*ip-1];
 421                 dot->m_flag |= MTOUCH|MBOX;
 422                 dot->m_flag &= ~MPRESERVE;
 423         }
 424         return (0);
 425 }
 426
 427 /*
 428  * List the folders the user currently has.
 429  */
 430 int
 431 folders(void)
 432 {
 433         char dirname[PATHSIZE];
 434         char *cmd;
 435
 436         if (getfold(dirname, sizeof(dirname)) < 0) {
 437                 printf("No value set for \"folder\"\n");
 438                 return (1);
 439         }
 440         if ((cmd = value("LISTER")) == NULL)
 441                 cmd = "ls";
 442         (void)run_command(cmd, 0, -1, -1, dirname, NULL, NULL);
 443         return (0);
 444 }
 445
 446 /*
 447  * Update the mail file with any new messages that have
 448  * come in since we started reading mail.
 449  */
 450 int
 451 inc(void *v __unused)
 452 {
 453         int nmsg, mdot;
 454
 455         nmsg = incfile();
 456
 457         if (nmsg == 0)
 458                 printf("No new mail.\n");
 459         else if (nmsg > 0) {
 460                 mdot = newfileinfo(msgCount - nmsg);
 461                 dot = &message[mdot - 1];
 462         } else
 463                 printf("\"inc\" command failed...\n");
 464
 465         return (0);
 466 }