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

   1 /* rcvdist.c -- asynchronously redistribute messages
   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/fmt_new.h"
  10 #include "distsbr.h"
  11 #include "sbr/m_gmprot.h"
  12 #include "sbr/m_getfld.h"
  13 #include "sbr/getarguments.h"
  14 #include "sbr/smatch.h"
  15 #include "sbr/cpydata.h"
  16 #include "sbr/context_find.h"
  17 #include "sbr/ambigsw.h"
  18 #include "sbr/pidstatus.h"
  19 #include "sbr/print_version.h"
  20 #include "sbr/print_help.h"
  21 #include "sbr/arglist.h"
  22 #include "sbr/error.h"
  23 #include "h/fmt_scan.h"
  24 #include "h/tws.h"
  25 #include "h/mts.h"
  26 #include "h/done.h"
  27 #include "h/utils.h"
  28 #include "sbr/m_mktemp.h"
  29
  30 #define RCVDIST_SWITCHES \
  31     X("form formfile", 4, FORMSW) \
  32     X("version", 0, VERSIONSW) \
  33     X("help", 0, HELPSW) \
  34
  35 #define X(sw, minchars, id) id,
  36 DEFINE_SWITCH_ENUM(RCVDIST);
  37 #undef X
  38
  39 #define X(sw, minchars, id) { sw, minchars, id },
  40 DEFINE_SWITCH_ARRAY(RCVDIST, switches);
  41 #undef X
  42
  43 #ifndef CYRUS_SASL
  44 # define SASLminc(a) (a)
  45 #else /* CYRUS_SASL */
  46 # define SASLminc(a)  0
  47 #endif /* CYRUS_SASL */
  48
  49 #ifndef OAUTH_SUPPORT
  50 # define OAUTHminc(a)   (a)
  51 #else /* OAUTH_SUPPORT */
  52 # define OAUTHminc(a)   0
  53 #endif /* OAUTH_SUPPORT */
  54
  55 /* These are just the post(1) switches that take an argument. */
  56 #define POST_SWITCHES \
  57     X("alias aliasfile", 0, ALIASW) \
  58     X("filter filterfile", 0, FILTSW) \
  59     X("library directory", -7, LIBSW) /* interface from send, whom */ \
  60     X("width columns", 0, WIDTHSW) \
  61     X("idanno number", -6, ANNOSW) /* interface from send    */ \
  62     X("client host", -6, CLIESW) \
  63     X("server host", 6, SERVSW) /* specify alternate SMTP server */ \
  64     X("partno", -6, PARTSW) \
  65     X("saslmech", SASLminc(5), SASLMECHSW) \
  66     X("user", SASLminc(-4), USERSW) \
  67     X("port server submission port name/number", 4, PORTSW) \
  68     X("fileproc", -4, FILEPROCSW) \
  69     X("mhlproc", -3, MHLPROCSW) \
  70     X("sendmail program", 0, MTSSM) \
  71     X("mts smtp|sendmail/smtp|sendmail/pipe", 2, MTSSW) \
  72     X("credentials legacy|file:filename", 0, CREDENTIALSSW) \
  73     X("messageid localname|random", 2, MESSAGEIDSW) \
  74     X("authservice auth-service-name", OAUTHminc(-11), AUTHSERVICESW) \
  75     X("oauthcredfile credential-file", OAUTHminc(-7), OAUTHCREDFILESW) \
  76     X("oauthclientid client-id", OAUTHminc(-12), OAUTHCLIDSW) \
  77     X("oauthclientsecret client-secret", OAUTHminc(-12), OAUTHCLSECSW) \
  78     X("oauthauthendpoint authentication-endpoint", OAUTHminc(-6), OAUTHAUTHENDSW) \
  79     X("oauthredirect redirect-uri", OAUTHminc(-6), OAUTHREDIRSW) \
  80     X("oauthtokenendpoint token-endpoint", OAUTHminc(-6), OAUTHTOKENDSW) \
  81     X("oauthscope scope", OAUTHminc(-6), OAUTHSCOPESW) \
  82
  83 #define X(sw, minchars, id) id,
  84 DEFINE_SWITCH_ENUM(POST);
  85 #undef X
  86
  87 #define X(sw, minchars, id) { sw, minchars, id },
  88 DEFINE_SWITCH_ARRAY(POST, post_switches_with_args);
  89 #undef X
  90
  91 static char backup[BUFSIZ] = "";
  92 static char drft[BUFSIZ] = "";
  93 static char tmpfil[BUFSIZ] = "";
  94
  95 /*
  96  * prototypes
  97  */
  98 static void rcvdistout (FILE *, char *, char *);
  99 static void unlink_done (int) NORETURN;
 100
 101
 102 int
 103 main (int argc, char **argv)
 104 {
 105     pid_t child_id;
 106     int vecp;
 107     char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ], *program;
 108     char **argp, **arguments, **vec;
 109     FILE *fp;
 110     char *tfile = NULL;
 111
 112     if (nmh_init(argv[0], true, false)) { return 1; }
 113
 114     set_done(unlink_done);
 115
 116     /*
 117      * Configure this now, since any unknown switches to rcvdist get
 118      * sent to postproc
 119      */
 120
 121     vec = argsplit(postproc, &program, &vecp);
 122
 123     mts_init ();
 124     arguments = getarguments (invo_name, argc, argv, 1);
 125     argp = arguments;
 126
 127     while ((cp = *argp++)) {
 128         if (*cp == '-') {
 129             switch (smatch (++cp, switches)) {
 130                 case AMBIGSW:
 131                     ambigsw (cp, switches);
 132                     done (1);
 133                 case UNKWNSW: {
 134                     const int argno = smatch(cp, post_switches_with_args);
 135                     vec[vecp++] = --cp;
 136                     if (argno != AMBIGSW && argno != UNKWNSW) {
 137                         /* It's a post switch that does take an argument. */
 138                         if (!(cp = *argp) || *cp == '-') {
 139                             die("missing argument to %s", argp[-1]);
 140                         }
 141                         vec[vecp++] = cp;
 142                         ++argp;
 143                     }
 144                     continue;
 145                 }
 146                 case HELPSW:
 147                     snprintf (buf, sizeof(buf),
 148                         "%s [switches] [switches for postproc] address ...",
 149                         invo_name);
 150                     print_help (buf, switches, 1);
 151                     done (0);
 152                 case VERSIONSW:
 153                     print_version(invo_name);
 154                     done (0);
 155
 156                 case FORMSW:
 157                     if (!(form = *argp++) || *form == '-')
 158                         die("missing argument to %s", argp[-2]);
 159                     continue;
 160             }
 161         }
 162         addrs = addrs ? add (cp, add (", ", addrs)) : mh_xstrdup(cp);
 163     }
 164
 165     if (addrs == NULL)
 166         die("usage: %s [switches] [switches for postproc] address ...",
 167             invo_name);
 168
 169     umask (~m_gmprot ());
 170
 171     if ((tfile = m_mktemp2(NULL, invo_name, NULL, &fp)) == NULL) {
 172         die("unable to create temporary file in %s", get_temp_dir());
 173     }
 174     strncpy (tmpfil, tfile, sizeof(tmpfil));
 175
 176     cpydata (fileno (stdin), fileno (fp), "message", tmpfil);
 177     fseek (fp, 0L, SEEK_SET);
 178
 179     if ((tfile = m_mktemp2(NULL, invo_name, NULL, NULL)) == NULL) {
 180         die("unable to create temporary file in %s", get_temp_dir());
 181     }
 182     strncpy (drft, tfile, sizeof(tmpfil));
 183
 184     rcvdistout (fp, form, addrs);
 185     fclose (fp);
 186
 187     if (distout (drft, tmpfil, backup) == NOTOK)
 188         done (1);
 189
 190     vec[vecp++] = "-dist";
 191     if ((cp = context_find ("mhlproc"))) {
 192       vec[vecp++] = "-mhlproc";
 193       vec[vecp++] = cp;
 194     }
 195     vec[vecp++] = drft;
 196     vec[vecp] = NULL;
 197
 198     child_id = fork();
 199     switch (child_id) {
 200         case NOTOK:
 201             adios("fork", "failed:");
 202
 203         case OK:
 204             execvp (program, vec);
 205             fprintf (stderr, "unable to exec ");
 206             perror (postproc);
 207             _exit (1);
 208
 209         default:
 210             done (pidXwait(child_id, postproc));
 211     }
 212
 213     return 0;  /* dead code to satisfy the compiler */
 214 }
 215
 216 /* very similar to routine in replsbr.c */
 217
 218 static int outputlinelen = OUTPUTLINELEN;
 219
 220 static struct format *fmt;
 221
 222 static int dat[5];
 223
 224 static char *addrcomps[] = {
 225     "from",
 226     "sender",
 227     "reply-to",
 228     "to",
 229     "cc",
 230     "bcc",
 231     "resent-from",
 232     "resent-sender",
 233     "resent-reply-to",
 234     "resent-to",
 235     "resent-cc",
 236     "resent-bcc",
 237     NULL
 238 };
 239
 240
 241 static void
 242 rcvdistout (FILE *inb, char *form, char *addrs)
 243 {
 244     int char_read = 0, format_len, i, state;
 245     char **ap;
 246     char *cp, name[NAMESZ], tmpbuf[NMH_BUFSIZ];
 247     charstring_t scanl;
 248     struct comp *cptr;
 249     FILE *out;
 250     m_getfld_state_t gstate;
 251
 252     if (!(out = fopen (drft, "w")))
 253         adios (drft, "unable to create");
 254
 255     /* get new format string */
 256     cp = new_fs (form ? form : rcvdistcomps, NULL, NULL);
 257     format_len = strlen (cp);
 258     fmt_compile (cp, &fmt, 1);
 259
 260     for (ap = addrcomps; *ap; ap++) {
 261         cptr = fmt_findcomp (*ap);
 262         if (cptr)
 263             cptr->c_type |= CT_ADDR;
 264     }
 265
 266     cptr = fmt_findcomp ("addresses");
 267     if (cptr)
 268         cptr->c_text = addrs;
 269
 270     gstate = m_getfld_state_init(inb);
 271     for (;;) {
 272         int msg_count = sizeof tmpbuf;
 273         switch (state = m_getfld2(&gstate, name, tmpbuf, &msg_count)) {
 274             case FLD:
 275             case FLDPLUS:
 276                 i = fmt_addcomptext(name, tmpbuf);
 277                 if (i != -1) {
 278                     char_read += msg_count;
 279                     while (state == FLDPLUS) {
 280                         msg_count = sizeof tmpbuf;
 281                         state = m_getfld2(&gstate, name, tmpbuf, &msg_count);
 282                         fmt_appendcomp(i, name, tmpbuf);
 283                         char_read += msg_count;
 284                     }
 285                 }
 286
 287                 while (state == FLDPLUS) {
 288                     msg_count = sizeof tmpbuf;
 289                     state = m_getfld2(&gstate, name, tmpbuf, &msg_count);
 290                 }
 291                 break;
 292
 293             case LENERR:
 294             case FMTERR:
 295             case BODY:
 296             case FILEEOF:
 297                 goto finished;
 298
 299             default:
 300                 die("m_getfld2() returned %d", state);
 301         }
 302     }
 303 finished: ;
 304     m_getfld_state_destroy (&gstate);
 305
 306     i = format_len + char_read + 256;
 307     scanl = charstring_create (i + 2);
 308     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 309     dat[3] = outputlinelen;
 310     fmt_scan (fmt, scanl, i, dat, NULL);
 311     fputs (charstring_buffer (scanl), out);
 312
 313     if (ferror (out))
 314         adios (drft, "error writing");
 315     fclose (out);
 316
 317     charstring_free (scanl);
 318     fmt_free(fmt, 1);
 319 }
 320
 321
 322 static void NORETURN
 323 unlink_done (int status)
 324 {
 325     if (backup[0])
 326         (void) m_unlink (backup);
 327     if (drft[0])
 328         (void) m_unlink (drft);
 329     if (tmpfil[0])
 330         (void) m_unlink (tmpfil);
 331
 332     exit(status ? 1 : 0);
 333 }