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 static struct swit switches[] = {
  24 #define DATESW                   0
  25     { "date", 0 },
  26 #define NDATESW                  1
  27     { "nodate", 0 },
  28 #define NOTESW                   2
  29     { "notify type", 0 },
  30 #define NNOTESW                  3
  31     { "nonotify type", 0 },
  32 #define HOSTSW                   4
  33     { "host hostname", 0 },
  34 #define USERSW                   5
  35     { "user username", 0 },
  36 #define PORTSW                   6
  37     { "port name/number", 0 },
  38 #define VERSIONSW                7
  39     { "version", 0 },
  40 #define HELPSW                   8
  41     { "help", 0 },
  42 #define SNOOPSW                  9
  43     { "snoop", -5 },
  44 #define SASLSW                  10
  45     { "sasl", SASLminc(-4) },
  46 #define SASLMECHSW              11
  47     { "saslmech", SASLminc(-5) },
  48 #define PROXYSW                 12
  49     { "proxy command", 0 },
  50     { NULL, 0 }
  51 };
  52
  53 /*
  54  * Maximum numbers of users we can check (plus
  55  * one for the NULL vector at the end).
  56  */
  57 #define MAXVEC  51
  58
  59 #define NT_NONE 0x0
  60 #ifdef NT_NONE
  61 #endif /* Use NT_NONE to prevent warning from gcc -Wunused-macros. */
  62 #define NT_MAIL 0x1
  63 #define NT_NMAI 0x2
  64 #define NT_ALL  (NT_MAIL | NT_NMAI)
  65
  66 #define NONEOK  0x0
  67 #define UUCPOLD 0x1
  68 #define UUCPNEW 0x2
  69 #define UUCPOK  (UUCPOLD | UUCPNEW)
  70 #define MMDFOLD 0x4
  71 #define MMDFNEW 0x8
  72 #define MMDFOK  (MMDFOLD | MMDFNEW)
  73
  74
  75 /*
  76  * static prototypes
  77  */
  78 static int donote (char *, int);
  79 static int checkmail (char *, char *, int, int, int);
  80 static int remotemail (char *, char *, char *, char *, int, int, int, int,
  81                        char *);
  82
  83
  84 int
  85 main (int argc, char **argv)
  86 {
  87     int datesw = 1, notifysw = NT_ALL;
  88     int status = 0, sasl = 0;
  89     int snoop = 0, vecp = 0;
  90     char *cp, *host = NULL, *port = NULL, *user, *proxy = NULL;
  91     char buf[BUFSIZ], *saslmech = NULL;
  92     char **argp, **arguments, *vec[MAXVEC];
  93     struct passwd *pw;
  94
  95 #ifdef LOCALE
  96     setlocale(LC_ALL, "");
  97 #endif
  98     invo_name = r1bindex (argv[0], '/');
  99
 100     /* read user profile/context */
 101     context_read();
 102
 103     mts_init (invo_name);
 104     user = getusername();
 105
 106     arguments = getarguments (invo_name, argc, argv, 1);
 107     argp = arguments;
 108
 109     while ((cp = *argp++)) {
 110         if (*cp == '-') {
 111             switch (smatch (++cp, switches)) {
 112                 case AMBIGSW:
 113                     ambigsw (cp, switches);
 114                     done (1);
 115                 case UNKWNSW:
 116                     adios (NULL, "-%s unknown", cp);
 117
 118                 case HELPSW:
 119                     snprintf (buf, sizeof(buf), "%s [switches] [users ...]",
 120                         invo_name);
 121                     print_help (buf, switches, 1);
 122                     done (0);
 123                 case VERSIONSW:
 124                     print_version(invo_name);
 125                     done (0);
 126
 127                 case DATESW:
 128                     datesw++;
 129                     continue;
 130                 case NDATESW:
 131                     datesw = 0;
 132                     continue;
 133
 134                 case NOTESW:
 135                     if (!(cp = *argp++) || *cp == '-')
 136                         adios (NULL, "missing argument to %s", argp[-2]);
 137                     notifysw |= donote (cp, 1);
 138                     continue;
 139                 case NNOTESW:
 140                     if (!(cp = *argp++) || *cp == '-')
 141                         adios (NULL, "missing argument to %s", argp[-2]);
 142                     notifysw &= ~donote (cp, 0);
 143                     continue;
 144
 145                 case HOSTSW:
 146                     if (!(host = *argp++) || *host == '-')
 147                         adios (NULL, "missing argument to %s", argp[-2]);
 148                     continue;
 149
 150                 case PORTSW:
 151                     if (!(port = *argp++) || *port == '-')
 152                         adios (NULL, "missing argument to %s", argp[-2]);
 153                 continue;
 154
 155                 case USERSW:
 156                     if (!(cp = *argp++) || *cp == '-')
 157                         adios (NULL, "missing argument to %s", argp[-2]);
 158                     if (vecp >= MAXVEC-1)
 159                         adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 160                     else
 161                         vec[vecp++] = cp;
 162                     continue;
 163
 164                 case SNOOPSW:
 165                     snoop++;
 166                     continue;
 167
 168                 case SASLSW:
 169                     sasl++;
 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 PROXYSW:
 178                     if (!(proxy = *argp++) || *proxy == '-')
 179                         adios (NULL, "missing argument to %s", argp[-2]);
 180                     continue;
 181             }
 182         }
 183         if (vecp >= MAXVEC-1)
 184             adios (NULL, "you can only check %d users at a time", MAXVEC-1);
 185         else
 186             vec[vecp++] = cp;
 187     }
 188
 189     /*
 190      * If -host is not specified by user
 191      */
 192     if (!host || !*host) {
 193         /*
 194          * If "pophost" is specified in mts.conf,
 195          * use it as default value.
 196          */
 197         if (pophost && *pophost)
 198             host = pophost;
 199     }
 200     if (!host || !*host)
 201         host = NULL;
 202
 203     if (vecp != 0)
 204         vec[vecp] = NULL;
 205
 206     if (host) {
 207         if (vecp == 0) {
 208             status = remotemail (host, port, user, proxy, notifysw, 1,
 209                                  snoop, sasl, saslmech);
 210         } else {
 211             for (vecp = 0; vec[vecp]; vecp++)
 212                 status += remotemail (host, port, vec[vecp], proxy, notifysw, 0,
 213                                       snoop, sasl, saslmech);
 214         }
 215     } else {
 216
 217     if (vecp == 0) {
 218         char *home;
 219
 220         /* Not sure this check makes sense... */
 221         if (!geteuid() || NULL == (home = getenv("HOME"))) {
 222             pw = getpwnam (user);
 223             if (pw == NULL)
 224                 adios (NULL, "unable to get information about user");
 225             home = pw->pw_dir;
 226         }
 227         status = checkmail (user, home, datesw, notifysw, 1);
 228     } else {
 229         for (vecp = 0; vec[vecp]; vecp++) {
 230             if ((pw = getpwnam (vec[vecp])))
 231                 status += checkmail (pw->pw_name, pw->pw_dir, datesw, notifysw, 0);
 232             else
 233                 advise (NULL, "no such user as %s", vec[vecp]);
 234         }
 235     }
 236     }           /* host == NULL */
 237
 238     done (status);
 239     return 1;
 240 }
 241
 242
 243 static struct swit ntswitches[] = {
 244 #define NALLSW     0
 245     { "all", 0 },
 246 #define NMAISW     1
 247     { "mail", 0 },
 248 #define NNMAISW    2
 249     { "nomail", 0 },
 250     { NULL, 0 }
 251 };
 252
 253
 254 static int
 255 donote (char *cp, int ntflag)
 256 {
 257     switch (smatch (cp, ntswitches)) {
 258         case AMBIGSW:
 259             ambigsw (cp, ntswitches);
 260             done (1);
 261         case UNKWNSW:
 262             adios (NULL, "-%snotify %s unknown", ntflag ? "" : "no", cp);
 263
 264         case NALLSW:
 265             return NT_ALL;
 266         case NMAISW:
 267             return NT_MAIL;
 268         case NNMAISW:
 269             return NT_NMAI;
 270     }
 271
 272     return 0; /* Before 1999-07-15, garbage was returned if control got here. */
 273 }
 274
 275
 276 static int
 277 checkmail (char *user, char *home, int datesw, int notifysw, int personal)
 278 {
 279     int mf, status;
 280     char buffer[BUFSIZ];
 281     struct stat st;
 282
 283     snprintf (buffer, sizeof(buffer), "%s/%s", mmdfldir[0] ? mmdfldir : home, mmdflfil[0] ? mmdflfil : user);
 284     if (datesw) {
 285         st.st_size = 0;
 286         st.st_atime = st.st_mtime = 0;
 287     }
 288     mf = (stat (buffer, &st) == NOTOK || st.st_size == 0) ? NONEOK
 289         : st.st_atime <= st.st_mtime ? MMDFNEW : MMDFOLD;
 290
 291     if ((mf & UUCPOK) || (mf & MMDFOK)) {
 292         if (notifysw & NT_MAIL) {
 293             printf (personal ? "You have " : "%s has ", user);
 294             if (mf & UUCPOK)
 295                 printf ("%s old-style bell", mf & UUCPOLD ? "old" : "new");
 296             if ((mf & UUCPOK) && (mf & MMDFOK))
 297                 printf (" and ");
 298             if (mf & MMDFOK)
 299                 printf ("%s%s", mf & MMDFOLD ? "old" : "new",
 300                         mf & UUCPOK ? " Internet" : "");
 301             printf (" mail waiting");
 302         } else {
 303             notifysw = 0;
 304         }
 305         status = 0;
 306     }
 307     else {
 308         if (notifysw & NT_NMAI)
 309             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 310                     personal ? "" : user, "have any mail waiting");
 311         else
 312             notifysw = 0;
 313
 314         status = 1;
 315     }
 316
 317     if (notifysw)
 318         if (datesw && st.st_atime)
 319             printf ("; last read on %s", dtime (&st.st_atime, 1));
 320     if (notifysw)
 321         printf ("\n");
 322
 323     return status;
 324 }
 325
 326
 327 extern char response[];
 328
 329 static int
 330 remotemail (char *host, char *port, char *user, char *proxy, int notifysw,
 331             int personal, int snoop, int sasl, char *saslmech)
 332 {
 333     int nmsgs, nbytes, status;
 334     char *pass = NULL;
 335
 336     if (user == NULL)
 337         user = getusername ();
 338     if (sasl)
 339         pass = getusername ();
 340     else
 341         ruserpass (host, &user, &pass);
 342
 343     /* open the POP connection */
 344     if (pop_init (host, port, user, pass, proxy, snoop, sasl, saslmech) == NOTOK
 345             || pop_stat (&nmsgs, &nbytes) == NOTOK      /* check for messages  */
 346             || pop_quit () == NOTOK) {                  /* quit POP connection */
 347         advise (NULL, "%s", response);
 348         return 1;
 349     }
 350
 351     if (nmsgs) {
 352         if (notifysw & NT_MAIL) {
 353             printf (personal ? "You have " : "%s has ", user);
 354             printf ("%d message%s (%d bytes)",
 355                     nmsgs, nmsgs != 1 ? "s" : "", nbytes);
 356         }
 357         else
 358             notifysw = 0;
 359
 360         status = 0;
 361     } else {
 362         if (notifysw & NT_NMAI)
 363             printf (personal ? "You don't %s%s" : "%s doesn't %s",
 364                     personal ? "" : user, "have any mail waiting");
 365         else
 366             notifysw = 0;
 367         status = 1;
 368     }
 369     if (notifysw)
 370         printf (" on %s\n", host);
 371
 372     return status;
 373 }