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

   1 /* msgchk.c -- check for mail
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/mts.h>
  10 #include <h/tws.h>
  11 #include <h/utils.h>
  12 #include <pwd.h>
  13
  14 #include <h/popsbr.h>
  15
  16 #ifndef CYRUS_SASL
  17 # define SASLminc(a) (a)
  18 #else
  19 # define SASLminc(a)  0
  20 #endif
  21
  22 #ifndef TLS_SUPPORT
  23 # define TLSminc(a) (a)
  24 #else
  25 # define TLSminc(a)  0
  26 #endif
  27
  28 #define MSGCHK_SWITCHES \
  29     X("date", 0, DATESW) \
  30     X("nodate", 0, NDATESW) \
  31     X("notify type", 0, NOTESW) \
  32     X("nonotify type", 0, NNOTESW) \
  33     X("host hostname", 0, HOSTSW) \
  34     X("user username", 0, USERSW) \
  35     X("port name/number", 0, PORTSW) \
  36     X("version", 0, VERSIONSW) \
  37     X("help", 0, HELPSW) \
  38     X("snoop", 0, SNOOPSW) \
  39     X("sasl", SASLminc(4), SASLSW) \
  40     X("nosasl", SASLminc(6), NOSASLSW) \
  41     X("saslmech", SASLminc(5), SASLMECHSW) \
  42     X("authservice", SASLminc(0), AUTHSERVICESW) \
  43     X("initialtls", TLSminc(-10), INITTLSSW) \
  44     X("notls", TLSminc(-5), NOTLSSW) \
  45     X("certverify", TLSminc(-10), CERTVERSW) \
  46     X("nocertverify", TLSminc(-12), NOCERTVERSW) \
  47     X("proxy command", 0, PROXYSW) \
  48
  49 #define X(sw, minchars, id) id,
  50 DEFINE_SWITCH_ENUM(MSGCHK);
  51 #undef X
  52
  53 #define X(sw, minchars, id) { sw, minchars, id },
  54 DEFINE_SWITCH_ARRAY(MSGCHK, switches);
  55 #undef X
  56
  57 /*
  58  * Maximum numbers of users we can check (plus
  59  * one for the NULL vector at the end).
  60  */
  61 #define MAXVEC  51
  62
  63 #define NT_NONE 0x0
  64 #ifdef NT_NONE
  65 #endif /* Use NT_NONE to prevent warning from gcc -Wunused-macros. */
  66 #define NT_MAIL 0x1
  67 #define NT_NMAI 0x2
  68 #define NT_ALL  (NT_MAIL | NT_NMAI)
  69
  70 #define NONEOK  0x0
  71 #define UUCPOLD 0x1
  72 #define UUCPNEW 0x2
  73 #define UUCPOK  (UUCPOLD | UUCPNEW)
  74 #define MMDFOLD 0x4
  75 #define MMDFNEW 0x8
  76 #define MMDFOK  (MMDFOLD | MMDFNEW)
  77
  78
  79 /*
  80  * static prototypes
  81  */
  82 static int donote (char *, int) PURE;
  83 static int checkmail (char *, char *, int, int, int);
  84 static int remotemail (char *, char *, char *, char *, int, int, int, int,
  85                        char *, int, const char *);
  86
  87
  88 int
  89 main (int argc, char **argv)
  90 {
  91     int datesw = 1, notifysw = NT_ALL;
  92     int status = 0, sasl = 0, tls = 0, noverify = 0;
  93     int snoop = 0, vecp = 0;
  94     char *cp, *host = NULL, *port = NULL, *user = NULL, *proxy = NULL;
  95     char buf[BUFSIZ], *saslmech = NULL, *auth_svc = NULL;
  96     char **argp, **arguments, *vec[MAXVEC];
  97     struct passwd *pw;
  98
  99     if (nmh_init(argv[0], 1)) { return 1; }
 100
 101     mts_init ();
 102
 103     arguments = getarguments (invo_name, argc, argv, 1);
 104     argp = arguments;
 105
 106     while ((cp = *argp++)) {
 107         if (*cp == '-') {
 108             switch (smatch (++cp, switches)) {
 109                 case AMBIGSW:
 110                     ambigsw (cp, switches);
 111                     done (1);
 112                 case UNKWNSW:
 113                     adios (NULL, "-%s unknown", cp);
 114
 115                 case HELPSW:
 116                     snprintf (buf, sizeof(buf), "%s [switches] [users ...]",
 117                         invo_name);
 118                     print_help (buf, switches, 1);
 119                     done (0);
 120                 case VERSIONSW:
 121                     print_version(invo_name);
 122                     done (0);
 123
 124                 case DATESW:
 125                     datesw++;
 126                     continue;
 127                 case NDATESW:
 128                     datesw = 0;
 129                     continue;
 130
 131                 case NOTESW:
 132                     if (!(cp = *argp++) || *cp == '-')
 133                         adios (NULL, "missing argument to %s", argp[-2]);
 134                     notifysw |= donote (cp, 1);
 135                     continue;
 136                 case NNOTESW:
 137                     if (!(cp = *argp++) || *cp == '-')
 138                         adios (NULL, "missing argument to %s", argp[-2]);
 139                     notifysw &= ~donote (cp, 0);
 140                     continue;
 141
 142                 case HOSTSW:
 143                     if (!(host = *argp++) || *host == '-')
 144                         adios (NULL, "missing argument to %s", argp[-2]);
 145                     continue;
 146
 147                 case PORTSW:
 148                     if (!(port = *argp++) || *port == '-')
 149                         adios (NULL, "missing argument to %s", argp[-2]);
 150                 continue;
 151
 152                 case USERSW:
 153                     if (!(cp = *argp++) || *cp == '-')
 154                         adios (NULL, "missing argument to %s", argp[-2]);
 155                     if (vecp >= MAXVEC-1)
 156                         adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 157                     user = vec[vecp++] = cp;
 158                     continue;
 159
 160                 case SNOOPSW:
 161                     snoop++;
 162                     continue;
 163
 164                 case SASLSW:
 165                     sasl++;
 166                     continue;
 167
 168                 case NOSASLSW:
 169                     sasl = 0;
 170                     continue;
 171
 172                 case SASLMECHSW:
 173                     if (!(saslmech = *argp++) || *saslmech == '-')
 174                         adios (NULL, "missing argument to %s", argp[-2]);
 175                     continue;
 176
 177                 case INITTLSSW:
 178                     tls++;
 179                     continue;
 180
 181                 case NOTLSSW:
 182                     tls = 0;
 183                     continue;
 184
 185                 case CERTVERSW:
 186                     noverify = 0;
 187                     continue;
 188
 189                 case NOCERTVERSW:
 190                     noverify++;
 191                     continue;
 192
 193                 case AUTHSERVICESW:
 194 #ifdef OAUTH_SUPPORT
 195                     if (!(auth_svc = *argp++) || *auth_svc == '-')
 196                         adios (NULL, "missing argument to %s", argp[-2]);
 197 #else
 198                     adios (NULL, "not built with OAuth support");
 199 #endif
 200                     continue;
 201
 202                 case PROXYSW:
 203                     if (!(proxy = *argp++) || *proxy == '-')
 204                         adios (NULL, "missing argument to %s", argp[-2]);
 205                     continue;
 206             }
 207         }
 208         if (vecp >= MAXVEC-1)
 209             adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 210         vec[vecp++] = cp;
 211     }
 212
 213     /*
 214      * If -host is not specified by user
 215      */
 216     if (!host || !*host) {
 217         /*
 218          * If "pophost" is specified in mts.conf,
 219          * use it as default value.
 220          */
 221         if (pophost && *pophost)
 222             host = pophost;
 223     }
 224     if (!host || !*host)
 225         host = NULL;
 226
 227     if (vecp != 0)
 228         vec[vecp] = NULL;
 229
 230     if (host) {
 231         int tlsflag = 0;
 232
 233         if (tls)
 234             tlsflag |= P_INITTLS;
 235
 236         if (noverify)
 237             tlsflag |= P_NOVERIFY;
 238
 239         if (vecp == 0) {
 240             status = remotemail (host, port, user, proxy, notifysw, 1,
 241                                  snoop, sasl, saslmech, tlsflag, auth_svc);
 242         } else {
 243             for (vecp = 0; vec[vecp]; vecp++)
 244                 status += remotemail (host, port, vec[vecp], proxy, notifysw, 0,
 245                                       snoop, sasl, saslmech, tlsflag, auth_svc);
 246         }
 247     } else {
 248         if (user == NULL) user = getusername ();
 249         if (vecp == 0) {
 250             char *home;
 251
 252             /* Not sure this check makes sense... */
 253             if (!geteuid() || NULL == (home = getenv("HOME"))) {
 254                 pw = getpwnam (user);
 255                 if (pw == NULL)
 256                     adios (NULL, "unable to get information about user");
 257                 home = pw->pw_dir;
 258             }
 259             status = checkmail (user, home, datesw, notifysw, 1);
 260         } else {
 261             for (vecp = 0; vec[vecp]; vecp++) {
 262                 if ((pw = getpwnam (vec[vecp])))
 263                     status += checkmail (pw->pw_name, pw->pw_dir, datesw, notifysw, 0);
 264                 else
 265                     inform("no such user as %s", vec[vecp]);
 266             }
 267         }
 268     }           /* host == NULL */
 269
 270     done (status);
 271     return 1;
 272 }
 273
 274
 275 #define NOTE_SWITCHES \
 276     X("all", 0, NALLSW) \
 277     X("mail", 0, NMAISW) \
 278     X("nomail", 0, NNMAISW) \
 279
 280 #define X(sw, minchars, id) id,
 281 DEFINE_SWITCH_ENUM(NOTE);
 282 #undef X
 283
 284 #define X(sw, minchars, id) { sw, minchars, id },
 285 DEFINE_SWITCH_ARRAY(NOTE, ntswitches);
 286 #undef X
 287
 288
 289 static int
 290 donote (char *cp, int ntflag)
 291 {
 292     switch (smatch (cp, ntswitches)) {
 293         case AMBIGSW:
 294             ambigsw (cp, ntswitches);
 295             done (1);
 296         case UNKWNSW:
 297             adios (NULL, "-%snotify %s unknown", ntflag ? "" : "no", cp);
 298
 299         case NALLSW:
 300             return NT_ALL;
 301         case NMAISW:
 302             return NT_MAIL;
 303         case NNMAISW:
 304             return NT_NMAI;
 305     }
 306
 307     return 0; /* Before 1999-07-15, garbage was returned if control got here. */
 308 }
 309
 310
 311 static int
 312 checkmail (char *user, char *home, int datesw, int notifysw, int personal)
 313 {
 314     int mf, status;
 315     char buffer[BUFSIZ];
 316     struct stat st;
 317
 318     snprintf (buffer, sizeof(buffer), "%s/%s", mmdfldir[0] ? mmdfldir : home, mmdflfil[0] ? mmdflfil : user);
 319     if (datesw) {
 320         st.st_size = 0;
 321         st.st_atime = st.st_mtime = 0;
 322     }
 323     mf = (stat (buffer, &st) == NOTOK || st.st_size == 0) ? NONEOK
 324         : st.st_atime <= st.st_mtime ? MMDFNEW : MMDFOLD;
 325
 326     if ((mf & UUCPOK) || (mf & MMDFOK)) {
 327         if (notifysw & NT_MAIL) {
 328             if (personal)
 329                 printf ("You have ");
 330             else
 331                 printf ("%s has ", user);
 332             if (mf & UUCPOK)
 333                 printf ("%s old-style bell", mf & UUCPOLD ? "old" : "new");
 334             if ((mf & UUCPOK) && (mf & MMDFOK))
 335                 printf (" and ");
 336             if (mf & MMDFOK)
 337                 printf ("%s%s", mf & MMDFOLD ? "old" : "new",
 338                         mf & UUCPOK ? " Internet" : "");
 339             printf (" mail waiting");
 340         } else {
 341             notifysw = 0;
 342         }
 343         status = 0;
 344     }
 345     else {
 346         if (notifysw & NT_NMAI)
 347             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 348                     personal ? "" : user, "have any mail waiting");
 349         else
 350             notifysw = 0;
 351
 352         status = 1;
 353     }
 354
 355     if (notifysw)
 356         if (datesw && st.st_atime)
 357             printf ("; last read on %s", dtime (&st.st_atime, 1));
 358     if (notifysw)
 359         putchar('\n');
 360
 361     return status;
 362 }
 363
 364
 365 extern char response[];
 366
 367 static int
 368 remotemail (char *host, char *port, char *user, char *proxy, int notifysw,
 369             int personal, int snoop, int sasl, char *saslmech, int tls,
 370             const char *auth_svc)
 371 {
 372     int nmsgs, nbytes, status;
 373
 374     if (auth_svc == NULL) {
 375         if (saslmech  &&  ! strcasecmp(saslmech, "xoauth2")) {
 376             adios (NULL, "must specify -authservice with -saslmech xoauth2");
 377         }
 378     } else {
 379         if (user == NULL) {
 380             adios (NULL, "must specify -user with -saslmech xoauth2");
 381         }
 382     }
 383
 384     /* open the POP connection */
 385     if (pop_init (host, port, user, proxy, snoop, sasl, saslmech, tls,
 386                   auth_svc) == NOTOK
 387             || pop_stat (&nmsgs, &nbytes) == NOTOK     /* check for messages  */
 388             || pop_quit () == NOTOK) {                 /* quit POP connection */
 389         inform("%s", response);
 390         return 1;
 391     }
 392
 393     if (nmsgs) {
 394         if (notifysw & NT_MAIL) {
 395             if (personal)
 396                 printf ("You have ");
 397             else
 398                 printf ("%s has ", user);
 399
 400             printf ("%d message%s (%d bytes)",
 401                     nmsgs, PLURALS(nmsgs), nbytes);
 402         }
 403         else
 404             notifysw = 0;
 405
 406         status = 0;
 407     } else {
 408         if (notifysw & NT_NMAI)
 409             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 410                     personal ? "" : user, "have any mail waiting");
 411         else
 412             notifysw = 0;
 413         status = 1;
 414     }
 415     if (notifysw)
 416         printf (" on %s\n", host);
 417
 418     return status;
 419 }