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     if (nmh_init(argv[0], 1)) { return 1; }
  89
  90     mts_init (invo_name);
  91
  92     arguments = getarguments (invo_name, argc, argv, 1);
  93     argp = arguments;
  94
  95     while ((cp = *argp++)) {
  96         if (*cp == '-') {
  97             switch (smatch (++cp, switches)) {
  98                 case AMBIGSW:
  99                     ambigsw (cp, switches);
 100                     done (1);
 101                 case UNKWNSW:
 102                     adios (NULL, "-%s unknown", cp);
 103
 104                 case HELPSW:
 105                     snprintf (buf, sizeof(buf), "%s [switches] [users ...]",
 106                         invo_name);
 107                     print_help (buf, switches, 1);
 108                     done (0);
 109                 case VERSIONSW:
 110                     print_version(invo_name);
 111                     done (0);
 112
 113                 case DATESW:
 114                     datesw++;
 115                     continue;
 116                 case NDATESW:
 117                     datesw = 0;
 118                     continue;
 119
 120                 case NOTESW:
 121                     if (!(cp = *argp++) || *cp == '-')
 122                         adios (NULL, "missing argument to %s", argp[-2]);
 123                     notifysw |= donote (cp, 1);
 124                     continue;
 125                 case NNOTESW:
 126                     if (!(cp = *argp++) || *cp == '-')
 127                         adios (NULL, "missing argument to %s", argp[-2]);
 128                     notifysw &= ~donote (cp, 0);
 129                     continue;
 130
 131                 case HOSTSW:
 132                     if (!(host = *argp++) || *host == '-')
 133                         adios (NULL, "missing argument to %s", argp[-2]);
 134                     continue;
 135
 136                 case PORTSW:
 137                     if (!(port = *argp++) || *port == '-')
 138                         adios (NULL, "missing argument to %s", argp[-2]);
 139                 continue;
 140
 141                 case USERSW:
 142                     if (!(cp = *argp++) || *cp == '-')
 143                         adios (NULL, "missing argument to %s", argp[-2]);
 144                     if (vecp >= MAXVEC-1)
 145                         adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 146                     else
 147                         user = vec[vecp++] = cp;
 148                     continue;
 149
 150                 case SNOOPSW:
 151                     snoop++;
 152                     continue;
 153
 154                 case SASLSW:
 155                     sasl++;
 156                     continue;
 157
 158                 case SASLMECHSW:
 159                     if (!(saslmech = *argp++) || *saslmech == '-')
 160                         adios (NULL, "missing argument to %s", argp[-2]);
 161                     continue;
 162
 163                 case PROXYSW:
 164                     if (!(proxy = *argp++) || *proxy == '-')
 165                         adios (NULL, "missing argument to %s", argp[-2]);
 166                     continue;
 167             }
 168         }
 169         if (vecp >= MAXVEC-1)
 170             adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 171         else
 172             vec[vecp++] = cp;
 173     }
 174
 175     /*
 176      * If -host is not specified by user
 177      */
 178     if (!host || !*host) {
 179         /*
 180          * If "pophost" is specified in mts.conf,
 181          * use it as default value.
 182          */
 183         if (pophost && *pophost)
 184             host = pophost;
 185     }
 186     if (!host || !*host)
 187         host = NULL;
 188
 189     if (vecp != 0)
 190         vec[vecp] = NULL;
 191
 192     if (host) {
 193         if (vecp == 0) {
 194             status = remotemail (host, port, user, proxy, notifysw, 1,
 195                                  snoop, sasl, saslmech);
 196         } else {
 197             for (vecp = 0; vec[vecp]; vecp++)
 198                 status += remotemail (host, port, vec[vecp], proxy, notifysw, 0,
 199                                       snoop, sasl, saslmech);
 200         }
 201     } else {
 202         if (user == NULL) user = getusername ();
 203         if (vecp == 0) {
 204             char *home;
 205
 206             /* Not sure this check makes sense... */
 207             if (!geteuid() || NULL == (home = getenv("HOME"))) {
 208                 pw = getpwnam (user);
 209                 if (pw == NULL)
 210                     adios (NULL, "unable to get information about user");
 211                 home = pw->pw_dir;
 212             }
 213             status = checkmail (user, home, datesw, notifysw, 1);
 214         } else {
 215             for (vecp = 0; vec[vecp]; vecp++) {
 216                 if ((pw = getpwnam (vec[vecp])))
 217                     status += checkmail (pw->pw_name, pw->pw_dir, datesw, notifysw, 0);
 218                 else
 219                     advise (NULL, "no such user as %s", vec[vecp]);
 220             }
 221         }
 222     }           /* host == NULL */
 223
 224     done (status);
 225     return 1;
 226 }
 227
 228
 229 #define NOTE_SWITCHES \
 230     X("all", 0, NALLSW) \
 231     X("mail", 0, NMAISW) \
 232     X("nomail", 0, NNMAISW) \
 233
 234 #define X(sw, minchars, id) id,
 235 DEFINE_SWITCH_ENUM(NOTE);
 236 #undef X
 237
 238 #define X(sw, minchars, id) { sw, minchars, id },
 239 DEFINE_SWITCH_ARRAY(NOTE, ntswitches);
 240 #undef X
 241
 242
 243 static int
 244 donote (char *cp, int ntflag)
 245 {
 246     switch (smatch (cp, ntswitches)) {
 247         case AMBIGSW:
 248             ambigsw (cp, ntswitches);
 249             done (1);
 250         case UNKWNSW:
 251             adios (NULL, "-%snotify %s unknown", ntflag ? "" : "no", cp);
 252
 253         case NALLSW:
 254             return NT_ALL;
 255         case NMAISW:
 256             return NT_MAIL;
 257         case NNMAISW:
 258             return NT_NMAI;
 259     }
 260
 261     return 0; /* Before 1999-07-15, garbage was returned if control got here. */
 262 }
 263
 264
 265 static int
 266 checkmail (char *user, char *home, int datesw, int notifysw, int personal)
 267 {
 268     int mf, status;
 269     char buffer[BUFSIZ];
 270     struct stat st;
 271
 272     snprintf (buffer, sizeof(buffer), "%s/%s", mmdfldir[0] ? mmdfldir : home, mmdflfil[0] ? mmdflfil : user);
 273     if (datesw) {
 274         st.st_size = 0;
 275         st.st_atime = st.st_mtime = 0;
 276     }
 277     mf = (stat (buffer, &st) == NOTOK || st.st_size == 0) ? NONEOK
 278         : st.st_atime <= st.st_mtime ? MMDFNEW : MMDFOLD;
 279
 280     if ((mf & UUCPOK) || (mf & MMDFOK)) {
 281         if (notifysw & NT_MAIL) {
 282             if (personal)
 283                 printf ("You have ");
 284             else
 285                 printf ("%s has ", user);
 286             if (mf & UUCPOK)
 287                 printf ("%s old-style bell", mf & UUCPOLD ? "old" : "new");
 288             if ((mf & UUCPOK) && (mf & MMDFOK))
 289                 printf (" and ");
 290             if (mf & MMDFOK)
 291                 printf ("%s%s", mf & MMDFOLD ? "old" : "new",
 292                         mf & UUCPOK ? " Internet" : "");
 293             printf (" mail waiting");
 294         } else {
 295             notifysw = 0;
 296         }
 297         status = 0;
 298     }
 299     else {
 300         if (notifysw & NT_NMAI)
 301             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 302                     personal ? "" : user, "have any mail waiting");
 303         else
 304             notifysw = 0;
 305
 306         status = 1;
 307     }
 308
 309     if (notifysw)
 310         if (datesw && st.st_atime)
 311             printf ("; last read on %s", dtime (&st.st_atime, 1));
 312     if (notifysw)
 313         printf ("\n");
 314
 315     return status;
 316 }
 317
 318
 319 extern char response[];
 320
 321 static int
 322 remotemail (char *host, char *port, char *user, char *proxy, int notifysw,
 323             int personal, int snoop, int sasl, char *saslmech)
 324 {
 325     int nmsgs, nbytes, status;
 326     struct nmh_creds creds = { 0, 0, 0 };
 327
 328     /* open the POP connection */
 329     nmh_get_credentials (host, user, sasl, &creds);
 330     if (pop_init (host, port, creds.user, creds.password, proxy, snoop, sasl,
 331                   saslmech) == NOTOK
 332             || pop_stat (&nmsgs, &nbytes) == NOTOK     /* check for messages  */
 333             || pop_quit () == NOTOK) {                 /* quit POP connection */
 334         advise (NULL, "%s", response);
 335         return 1;
 336     }
 337
 338     if (nmsgs) {
 339         if (notifysw & NT_MAIL) {
 340             if (personal)
 341                 printf ("You have ");
 342             else
 343                 printf ("%s has ", user);
 344
 345             printf ("%d message%s (%d bytes)",
 346                     nmsgs, nmsgs != 1 ? "s" : "", nbytes);
 347         }
 348         else
 349             notifysw = 0;
 350
 351         status = 0;
 352     } else {
 353         if (notifysw & NT_NMAI)
 354             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 355                     personal ? "" : user, "have any mail waiting");
 356         else
 357             notifysw = 0;
 358         status = 1;
 359     }
 360     if (notifysw)
 361         printf (" on %s\n", host);
 362
 363     return status;
 364 }