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, *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     user = getusername();
  98
  99     arguments = getarguments (invo_name, argc, argv, 1);
 100     argp = arguments;
 101
 102     while ((cp = *argp++)) {
 103         if (*cp == '-') {
 104             switch (smatch (++cp, switches)) {
 105                 case AMBIGSW:
 106                     ambigsw (cp, switches);
 107                     done (1);
 108                 case UNKWNSW:
 109                     adios (NULL, "-%s unknown", cp);
 110
 111                 case HELPSW:
 112                     snprintf (buf, sizeof(buf), "%s [switches] [users ...]",
 113                         invo_name);
 114                     print_help (buf, switches, 1);
 115                     done (0);
 116                 case VERSIONSW:
 117                     print_version(invo_name);
 118                     done (0);
 119
 120                 case DATESW:
 121                     datesw++;
 122                     continue;
 123                 case NDATESW:
 124                     datesw = 0;
 125                     continue;
 126
 127                 case NOTESW:
 128                     if (!(cp = *argp++) || *cp == '-')
 129                         adios (NULL, "missing argument to %s", argp[-2]);
 130                     notifysw |= donote (cp, 1);
 131                     continue;
 132                 case NNOTESW:
 133                     if (!(cp = *argp++) || *cp == '-')
 134                         adios (NULL, "missing argument to %s", argp[-2]);
 135                     notifysw &= ~donote (cp, 0);
 136                     continue;
 137
 138                 case HOSTSW:
 139                     if (!(host = *argp++) || *host == '-')
 140                         adios (NULL, "missing argument to %s", argp[-2]);
 141                     continue;
 142
 143                 case PORTSW:
 144                     if (!(port = *argp++) || *port == '-')
 145                         adios (NULL, "missing argument to %s", argp[-2]);
 146                 continue;
 147
 148                 case USERSW:
 149                     if (!(cp = *argp++) || *cp == '-')
 150                         adios (NULL, "missing argument to %s", argp[-2]);
 151                     if (vecp >= MAXVEC-1)
 152                         adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 153                     else
 154                         vec[vecp++] = cp;
 155                     continue;
 156
 157                 case SNOOPSW:
 158                     snoop++;
 159                     continue;
 160
 161                 case SASLSW:
 162                     sasl++;
 163                     continue;
 164
 165                 case SASLMECHSW:
 166                     if (!(saslmech = *argp++) || *saslmech == '-')
 167                         adios (NULL, "missing argument to %s", argp[-2]);
 168                     continue;
 169
 170                 case PROXYSW:
 171                     if (!(proxy = *argp++) || *proxy == '-')
 172                         adios (NULL, "missing argument to %s", argp[-2]);
 173                     continue;
 174             }
 175         }
 176         if (vecp >= MAXVEC-1)
 177             adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 178         else
 179             vec[vecp++] = cp;
 180     }
 181
 182     /*
 183      * If -host is not specified by user
 184      */
 185     if (!host || !*host) {
 186         /*
 187          * If "pophost" is specified in mts.conf,
 188          * use it as default value.
 189          */
 190         if (pophost && *pophost)
 191             host = pophost;
 192     }
 193     if (!host || !*host)
 194         host = NULL;
 195
 196     if (vecp != 0)
 197         vec[vecp] = NULL;
 198
 199     if (host) {
 200         if (vecp == 0) {
 201             status = remotemail (host, port, user, proxy, notifysw, 1,
 202                                  snoop, sasl, saslmech);
 203         } else {
 204             for (vecp = 0; vec[vecp]; vecp++)
 205                 status += remotemail (host, port, vec[vecp], proxy, notifysw, 0,
 206                                       snoop, sasl, saslmech);
 207         }
 208     } else {
 209
 210     if (vecp == 0) {
 211         char *home;
 212
 213         /* Not sure this check makes sense... */
 214         if (!geteuid() || NULL == (home = getenv("HOME"))) {
 215             pw = getpwnam (user);
 216             if (pw == NULL)
 217                 adios (NULL, "unable to get information about user");
 218             home = pw->pw_dir;
 219         }
 220         status = checkmail (user, home, datesw, notifysw, 1);
 221     } else {
 222         for (vecp = 0; vec[vecp]; vecp++) {
 223             if ((pw = getpwnam (vec[vecp])))
 224                 status += checkmail (pw->pw_name, pw->pw_dir, datesw, notifysw, 0);
 225             else
 226                 advise (NULL, "no such user as %s", vec[vecp]);
 227         }
 228     }
 229     }           /* host == NULL */
 230
 231     done (status);
 232     return 1;
 233 }
 234
 235
 236 #define NOTE_SWITCHES \
 237     X("all", 0, NALLSW) \
 238     X("mail", 0, NMAISW) \
 239     X("nomail", 0, NNMAISW) \
 240
 241 #define X(sw, minchars, id) id,
 242 DEFINE_SWITCH_ENUM(NOTE);
 243 #undef X
 244
 245 #define X(sw, minchars, id) { sw, minchars, id },
 246 DEFINE_SWITCH_ARRAY(NOTE, ntswitches);
 247 #undef X
 248
 249
 250 static int
 251 donote (char *cp, int ntflag)
 252 {
 253     switch (smatch (cp, ntswitches)) {
 254         case AMBIGSW:
 255             ambigsw (cp, ntswitches);
 256             done (1);
 257         case UNKWNSW:
 258             adios (NULL, "-%snotify %s unknown", ntflag ? "" : "no", cp);
 259
 260         case NALLSW:
 261             return NT_ALL;
 262         case NMAISW:
 263             return NT_MAIL;
 264         case NNMAISW:
 265             return NT_NMAI;
 266     }
 267
 268     return 0; /* Before 1999-07-15, garbage was returned if control got here. */
 269 }
 270
 271
 272 static int
 273 checkmail (char *user, char *home, int datesw, int notifysw, int personal)
 274 {
 275     int mf, status;
 276     char buffer[BUFSIZ];
 277     struct stat st;
 278
 279     snprintf (buffer, sizeof(buffer), "%s/%s", mmdfldir[0] ? mmdfldir : home, mmdflfil[0] ? mmdflfil : user);
 280     if (datesw) {
 281         st.st_size = 0;
 282         st.st_atime = st.st_mtime = 0;
 283     }
 284     mf = (stat (buffer, &st) == NOTOK || st.st_size == 0) ? NONEOK
 285         : st.st_atime <= st.st_mtime ? MMDFNEW : MMDFOLD;
 286
 287     if ((mf & UUCPOK) || (mf & MMDFOK)) {
 288         if (notifysw & NT_MAIL) {
 289             printf (personal ? "You have " : "%s has ", user);
 290             if (mf & UUCPOK)
 291                 printf ("%s old-style bell", mf & UUCPOLD ? "old" : "new");
 292             if ((mf & UUCPOK) && (mf & MMDFOK))
 293                 printf (" and ");
 294             if (mf & MMDFOK)
 295                 printf ("%s%s", mf & MMDFOLD ? "old" : "new",
 296                         mf & UUCPOK ? " Internet" : "");
 297             printf (" mail waiting");
 298         } else {
 299             notifysw = 0;
 300         }
 301         status = 0;
 302     }
 303     else {
 304         if (notifysw & NT_NMAI)
 305             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 306                     personal ? "" : user, "have any mail waiting");
 307         else
 308             notifysw = 0;
 309
 310         status = 1;
 311     }
 312
 313     if (notifysw)
 314         if (datesw && st.st_atime)
 315             printf ("; last read on %s", dtime (&st.st_atime, 1));
 316     if (notifysw)
 317         printf ("\n");
 318
 319     return status;
 320 }
 321
 322
 323 extern char response[];
 324
 325 static int
 326 remotemail (char *host, char *port, char *user, char *proxy, int notifysw,
 327             int personal, int snoop, int sasl, char *saslmech)
 328 {
 329     int nmsgs, nbytes, status;
 330     char *pass = NULL;
 331
 332     if (user == NULL)
 333         user = getusername ();
 334     if (sasl)
 335         pass = getusername ();
 336     else
 337         ruserpass (host, &user, &pass);
 338
 339     /* open the POP connection */
 340     if (pop_init (host, port, user, pass, proxy, snoop, sasl, saslmech) == NOTOK
 341             || pop_stat (&nmsgs, &nbytes) == NOTOK      /* check for messages  */
 342             || pop_quit () == NOTOK) {                  /* quit POP connection */
 343         advise (NULL, "%s", response);
 344         return 1;
 345     }
 346
 347     if (nmsgs) {
 348         if (notifysw & NT_MAIL) {
 349             printf (personal ? "You have " : "%s has ", user);
 350             printf ("%d message%s (%d bytes)",
 351                     nmsgs, nmsgs != 1 ? "s" : "", nbytes);
 352         }
 353         else
 354             notifysw = 0;
 355
 356         status = 0;
 357     } else {
 358         if (notifysw & NT_NMAI)
 359             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 360                     personal ? "" : user, "have any mail waiting");
 361         else
 362             notifysw = 0;
 363         status = 1;
 364     }
 365     if (notifysw)
 366         printf (" on %s\n", host);
 367
 368     return status;
 369 }