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