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

   1
   2 /*
   3  * msgchk.c -- check for mail
   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
  10 #include <h/mh.h>
  11 #include <h/mts.h>
  12 #include <h/tws.h>
  13 #include <pwd.h>
  14
  15 #include <h/popsbr.h>
  16
  17 #ifndef CYRUS_SASL
  18 # define SASLminc(a) (a)
  19 #else
  20 # define SASLminc(a)  0
  21 #endif
  22
  23 #define MSGCHK_SWITCHES \
  24     X("date", 0, DATESW) \
  25     X("nodate", 0, NDATESW) \
  26     X("notify type", 0, NOTESW) \
  27     X("nonotify type", 0, NNOTESW) \
  28     X("host hostname", 0, HOSTSW) \
  29     X("user username", 0, USERSW) \
  30     X("port name/number", 0, PORTSW) \
  31     X("version", 0, VERSIONSW) \
  32     X("help", 0, HELPSW) \
  33     X("snoop", -5, SNOOPSW) \
  34     X("sasl", SASLminc(-4), SASLSW) \
  35     X("saslmech", SASLminc(-5), SASLMECHSW) \
  36     X("proxy command", 0, PROXYSW) \
  37
  38 #define X(sw, minchars, id) id,
  39 DEFINE_SWITCH_ENUM(MSGCHK);
  40 #undef X
  41
  42 #define X(sw, minchars, id) { sw, minchars, id },
  43 DEFINE_SWITCH_ARRAY(MSGCHK, switches);
  44 #undef X
  45
  46 /*
  47  * Maximum numbers of users we can check (plus
  48  * one for the NULL vector at the end).
  49  */
  50 #define MAXVEC  51
  51
  52 #define NT_NONE 0x0
  53 #ifdef NT_NONE
  54 #endif /* Use NT_NONE to prevent warning from gcc -Wunused-macros. */
  55 #define NT_MAIL 0x1
  56 #define NT_NMAI 0x2
  57 #define NT_ALL  (NT_MAIL | NT_NMAI)
  58
  59 #define NONEOK  0x0
  60 #define UUCPOLD 0x1
  61 #define UUCPNEW 0x2
  62 #define UUCPOK  (UUCPOLD | UUCPNEW)
  63 #define MMDFOLD 0x4
  64 #define MMDFNEW 0x8
  65 #define MMDFOK  (MMDFOLD | MMDFNEW)
  66
  67
  68 /*
  69  * static prototypes
  70  */
  71 static int donote (char *, int);
  72 static int checkmail (char *, char *, int, int, int);
  73 static int remotemail (char *, char *, char *, char *, int, int, int, int,
  74                        char *);
  75
  76
  77 int
  78 main (int argc, char **argv)
  79 {
  80     int datesw = 1, notifysw = NT_ALL;
  81     int status = 0, sasl = 0;
  82     int snoop = 0, vecp = 0;
  83     char *cp, *host = NULL, *port = NULL, *user = NULL, *proxy = NULL;
  84     char buf[BUFSIZ], *saslmech = NULL;
  85     char **argp, **arguments, *vec[MAXVEC];
  86     struct passwd *pw;
  87
  88 #ifdef LOCALE
  89     setlocale(LC_ALL, "");
  90 #endif
  91     invo_name = r1bindex (argv[0], '/');
  92
  93     /* read user profile/context */
  94     context_read();
  95
  96     mts_init (invo_name);
  97
  98     arguments = getarguments (invo_name, argc, argv, 1);
  99     argp = arguments;
 100
 101     while ((cp = *argp++)) {
 102         if (*cp == '-') {
 103             switch (smatch (++cp, switches)) {
 104                 case AMBIGSW:
 105                     ambigsw (cp, switches);
 106                     done (1);
 107                 case UNKWNSW:
 108                     adios (NULL, "-%s unknown", cp);
 109
 110                 case HELPSW:
 111                     snprintf (buf, sizeof(buf), "%s [switches] [users ...]",
 112                         invo_name);
 113                     print_help (buf, switches, 1);
 114                     done (0);
 115                 case VERSIONSW:
 116                     print_version(invo_name);
 117                     done (0);
 118
 119                 case DATESW:
 120                     datesw++;
 121                     continue;
 122                 case NDATESW:
 123                     datesw = 0;
 124                     continue;
 125
 126                 case NOTESW:
 127                     if (!(cp = *argp++) || *cp == '-')
 128                         adios (NULL, "missing argument to %s", argp[-2]);
 129                     notifysw |= donote (cp, 1);
 130                     continue;
 131                 case NNOTESW:
 132                     if (!(cp = *argp++) || *cp == '-')
 133                         adios (NULL, "missing argument to %s", argp[-2]);
 134                     notifysw &= ~donote (cp, 0);
 135                     continue;
 136
 137                 case HOSTSW:
 138                     if (!(host = *argp++) || *host == '-')
 139                         adios (NULL, "missing argument to %s", argp[-2]);
 140                     continue;
 141
 142                 case PORTSW:
 143                     if (!(port = *argp++) || *port == '-')
 144                         adios (NULL, "missing argument to %s", argp[-2]);
 145                 continue;
 146
 147                 case USERSW:
 148                     if (!(cp = *argp++) || *cp == '-')
 149                         adios (NULL, "missing argument to %s", argp[-2]);
 150                     if (vecp >= MAXVEC-1)
 151                         adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 152                     else
 153                         user = vec[vecp++] = cp;
 154                     continue;
 155
 156                 case SNOOPSW:
 157                     snoop++;
 158                     continue;
 159
 160                 case SASLSW:
 161                     sasl++;
 162                     continue;
 163
 164                 case SASLMECHSW:
 165                     if (!(saslmech = *argp++) || *saslmech == '-')
 166                         adios (NULL, "missing argument to %s", argp[-2]);
 167                     continue;
 168
 169                 case PROXYSW:
 170                     if (!(proxy = *argp++) || *proxy == '-')
 171                         adios (NULL, "missing argument to %s", argp[-2]);
 172                     continue;
 173             }
 174         }
 175         if (vecp >= MAXVEC-1)
 176             adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 177         else
 178             vec[vecp++] = cp;
 179     }
 180
 181     /*
 182      * If -host is not specified by user
 183      */
 184     if (!host || !*host) {
 185         /*
 186          * If "pophost" is specified in mts.conf,
 187          * use it as default value.
 188          */
 189         if (pophost && *pophost)
 190             host = pophost;
 191     }
 192     if (!host || !*host)
 193         host = NULL;
 194
 195     if (vecp != 0)
 196         vec[vecp] = NULL;
 197
 198     if (host) {
 199         if (vecp == 0) {
 200             status = remotemail (host, port, user, proxy, notifysw, 1,
 201                                  snoop, sasl, saslmech);
 202         } else {
 203             for (vecp = 0; vec[vecp]; vecp++)
 204                 status += remotemail (host, port, vec[vecp], proxy, notifysw, 0,
 205                                       snoop, sasl, saslmech);
 206         }
 207     } else {
 208         if (user == NULL) user = getusername ();
 209         if (vecp == 0) {
 210             char *home;
 211
 212             /* Not sure this check makes sense... */
 213             if (!geteuid() || NULL == (home = getenv("HOME"))) {
 214                 pw = getpwnam (user);
 215                 if (pw == NULL)
 216                     adios (NULL, "unable to get information about user");
 217                 home = pw->pw_dir;
 218             }
 219             status = checkmail (user, home, datesw, notifysw, 1);
 220         } else {
 221             for (vecp = 0; vec[vecp]; vecp++) {
 222                 if ((pw = getpwnam (vec[vecp])))
 223                     status += checkmail (pw->pw_name, pw->pw_dir, datesw, notifysw, 0);
 224                 else
 225                     advise (NULL, "no such user as %s", vec[vecp]);
 226             }
 227         }
 228     }           /* host == NULL */
 229
 230     done (status);
 231     return 1;
 232 }
 233
 234
 235 #define NOTE_SWITCHES \
 236     X("all", 0, NALLSW) \
 237     X("mail", 0, NMAISW) \
 238     X("nomail", 0, NNMAISW) \
 239
 240 #define X(sw, minchars, id) id,
 241 DEFINE_SWITCH_ENUM(NOTE);
 242 #undef X
 243
 244 #define X(sw, minchars, id) { sw, minchars, id },
 245 DEFINE_SWITCH_ARRAY(NOTE, ntswitches);
 246 #undef X
 247
 248
 249 static int
 250 donote (char *cp, int ntflag)
 251 {
 252     switch (smatch (cp, ntswitches)) {
 253         case AMBIGSW:
 254             ambigsw (cp, ntswitches);
 255             done (1);
 256         case UNKWNSW:
 257             adios (NULL, "-%snotify %s unknown", ntflag ? "" : "no", cp);
 258
 259         case NALLSW:
 260             return NT_ALL;
 261         case NMAISW:
 262             return NT_MAIL;
 263         case NNMAISW:
 264             return NT_NMAI;
 265     }
 266
 267     return 0; /* Before 1999-07-15, garbage was returned if control got here. */
 268 }
 269
 270
 271 static int
 272 checkmail (char *user, char *home, int datesw, int notifysw, int personal)
 273 {
 274     int mf, status;
 275     char buffer[BUFSIZ];
 276     struct stat st;
 277
 278     snprintf (buffer, sizeof(buffer), "%s/%s", mmdfldir[0] ? mmdfldir : home, mmdflfil[0] ? mmdflfil : user);
 279     if (datesw) {
 280         st.st_size = 0;
 281         st.st_atime = st.st_mtime = 0;
 282     }
 283     mf = (stat (buffer, &st) == NOTOK || st.st_size == 0) ? NONEOK
 284         : st.st_atime <= st.st_mtime ? MMDFNEW : MMDFOLD;
 285
 286     if ((mf & UUCPOK) || (mf & MMDFOK)) {
 287         if (notifysw & NT_MAIL) {
 288             printf (personal ? "You have " : "%s has ", user);
 289             if (mf & UUCPOK)
 290                 printf ("%s old-style bell", mf & UUCPOLD ? "old" : "new");
 291             if ((mf & UUCPOK) && (mf & MMDFOK))
 292                 printf (" and ");
 293             if (mf & MMDFOK)
 294                 printf ("%s%s", mf & MMDFOLD ? "old" : "new",
 295                         mf & UUCPOK ? " Internet" : "");
 296             printf (" mail waiting");
 297         } else {
 298             notifysw = 0;
 299         }
 300         status = 0;
 301     }
 302     else {
 303         if (notifysw & NT_NMAI)
 304             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 305                     personal ? "" : user, "have any mail waiting");
 306         else
 307             notifysw = 0;
 308
 309         status = 1;
 310     }
 311
 312     if (notifysw)
 313         if (datesw && st.st_atime)
 314             printf ("; last read on %s", dtime (&st.st_atime, 1));
 315     if (notifysw)
 316         printf ("\n");
 317
 318     return status;
 319 }
 320
 321
 322 extern char response[];
 323
 324 static int
 325 remotemail (char *host, char *port, char *user, char *proxy, int notifysw,
 326             int personal, int snoop, int sasl, char *saslmech)
 327 {
 328     int nmsgs, nbytes, status;
 329     struct nmh_creds creds = { 0, 0, 0 };
 330
 331     /* open the POP connection */
 332     nmh_get_credentials (host, user, sasl, &creds);
 333     if (pop_init (host, port, creds.user, creds.password, proxy, snoop, sasl,
 334                   saslmech) == NOTOK
 335             || pop_stat (&nmsgs, &nbytes) == NOTOK     /* check for messages  */
 336             || pop_quit () == NOTOK) {                 /* quit POP connection */
 337         advise (NULL, "%s", response);
 338         return 1;
 339     }
 340
 341     if (nmsgs) {
 342         if (notifysw & NT_MAIL) {
 343             printf (personal ? "You have " : "%s has ", user);
 344             printf ("%d message%s (%d bytes)",
 345                     nmsgs, nmsgs != 1 ? "s" : "", nbytes);
 346         }
 347         else
 348             notifysw = 0;
 349
 350         status = 0;
 351     } else {
 352         if (notifysw & NT_NMAI)
 353             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 354                     personal ? "" : user, "have any mail waiting");
 355         else
 356             notifysw = 0;
 357         status = 1;
 358     }
 359     if (notifysw)
 360         printf (" on %s\n", host);
 361
 362     return status;
 363 }