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

   1 /* whom.c -- report to whom a message would be sent
   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_help.h"
  10 #include "sbr/error.h"
  11 #include "h/done.h"
  12 #include "h/utils.h"
  13 #include "h/signals.h"
  14 #include "sbr/m_maildir.h"
  15 #include "sbr/m_mktemp.h"
  16
  17 #ifndef CYRUS_SASL
  18 # define SASLminc(a) (a)
  19 #else /* CYRUS_SASL */
  20 # define SASLminc(a)  0
  21 #endif /* CYRUS_SASL */
  22
  23 #ifndef TLS_SUPPORT
  24 # define TLSminc(a)  (a)
  25 #else /* TLS_SUPPORT */
  26 # define TLSminc(a)   0
  27 #endif /* TLS_SUPPORT */
  28
  29 #define WHOM_SWITCHES \
  30     X("alias aliasfile", 0, ALIASW) \
  31     X("check", 0, CHKSW) \
  32     X("nocheck", 0, NOCHKSW) \
  33     X("draft", 0, DRAFTSW) \
  34     X("draftfolder +folder", 6, DFOLDSW) \
  35     X("draftmessage msg", 6, DMSGSW) \
  36     X("nodraftfolder", 0, NDFLDSW) \
  37     X("version", 0, VERSIONSW) \
  38     X("help", 0, HELPSW) \
  39     X("client host", -6, CLIESW) \
  40     X("server host", 0, SERVSW) \
  41     X("snoop", 0, SNOOPSW) \
  42     X("sasl", SASLminc(4), SASLSW) \
  43     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  44     X("user username", SASLminc(-4), USERSW) \
  45     X("port server port name/number", 4, PORTSW) \
  46     X("tls", TLSminc(-3), TLSSW) \
  47     X("initialtls", TLSminc(-10), INITTLSSW) \
  48     X("notls", TLSminc(-5), NTLSSW) \
  49     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  50
  51 #define X(sw, minchars, id) id,
  52 DEFINE_SWITCH_ENUM(WHOM);
  53 #undef X
  54
  55 #define X(sw, minchars, id) { sw, minchars, id },
  56 DEFINE_SWITCH_ARRAY(WHOM, switches);
  57 #undef X
  58
  59
  60 int
  61 main (int argc, char **argv)
  62 {
  63     pid_t child_id = OK;
  64     int status, isdf = 0;
  65     int vecp = 0;
  66     bool distsw;
  67     char *cp, *dfolder = NULL, *dmsg = NULL;
  68     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  69     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  70
  71     if (nmh_init(argv[0], true, false)) { return 1; }
  72
  73     arguments = getarguments (invo_name, argc, argv, 1);
  74     argp = arguments;
  75
  76     vec[vecp++] = invo_name;
  77     vec[vecp++] = "-whom";
  78     vec[vecp++] = "-library";
  79     vec[vecp++] = mh_xstrdup(m_maildir(""));
  80
  81     if ((cp = context_find ("credentials"))) {
  82         /* post doesn't read context so need to pass credentials. */
  83         vec[vecp++] = "-credentials";
  84         vec[vecp++] = cp;
  85     }
  86
  87     /* Don't need to feed fileproc or mhlproc to post because
  88        it doesn't use them when used for whom. */
  89
  90     while ((cp = *argp++)) {
  91         if (*cp == '-') {
  92             switch (smatch (++cp, switches)) {
  93                 case AMBIGSW:
  94                     ambigsw (cp, switches);
  95                     done (1);
  96                 case UNKWNSW:
  97                     die("-%s unknown", cp);
  98
  99                 case HELPSW:
 100                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 101                     print_help (buf, switches, 1);
 102                     done (0);
 103                 case VERSIONSW:
 104                     print_version(invo_name);
 105                     done (0);
 106
 107                 case CHKSW:
 108                 case NOCHKSW:
 109                 case SNOOPSW:
 110                 case SASLSW:
 111                 case TLSSW:
 112                 case INITTLSSW:
 113                 case NTLSSW:
 114                     vec[vecp++] = --cp;
 115                     continue;
 116
 117                 case DRAFTSW:
 118                     msg = draft;
 119                     continue;
 120
 121                 case DFOLDSW:
 122                     if (dfolder)
 123                         die("only one draft folder at a time!");
 124                     if (!(cp = *argp++) || *cp == '-')
 125                         die("missing argument to %s", argp[-2]);
 126                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 127                             *cp != '@' ? TFOLDER : TSUBCWF);
 128                     continue;
 129                 case DMSGSW:
 130                     if (dmsg)
 131                         die("only one draft message at a time!");
 132                     if (!(dmsg = *argp++) || *dmsg == '-')
 133                         die("missing argument to %s", argp[-2]);
 134                     continue;
 135                 case NDFLDSW:
 136                     dfolder = NULL;
 137                     isdf = NOTOK;
 138                     continue;
 139
 140                 case ALIASW:
 141                 case CLIESW:
 142                 case SERVSW:
 143                 case USERSW:
 144                 case PORTSW:
 145                 case SASLMECHSW:
 146                 case MTSSW:
 147                     vec[vecp++] = --cp;
 148                     if (!(cp = *argp++) || *cp == '-')
 149                         die("missing argument to %s", argp[-2]);
 150                     vec[vecp++] = cp;
 151                     continue;
 152             }
 153         }
 154         if (msg)
 155             die("only one draft at a time!");
 156         vec[vecp++] = msg = cp;
 157     }
 158
 159     /* allow Aliasfile: profile entry */
 160     if ((cp = context_find ("Aliasfile"))) {
 161         char *dp = NULL;
 162
 163         for (ap = brkstring(dp = mh_xstrdup(cp), " ", "\n"); ap && *ap; ap++) {
 164             vec[vecp++] = "-alias";
 165             vec[vecp++] = *ap;
 166         }
 167     }
 168
 169     if (msg == NULL) {
 170             cp  = mh_xstrdup(m_draft(dfolder, dmsg, 1, &isdf));
 171         msg = vec[vecp++] = cp;
 172     }
 173
 174     distsw = (cp = getenv("mhdist")) && *cp && atoi(cp) &&
 175         (cp = getenv("mhaltmsg")) && *cp;
 176     if (distsw) {
 177         if (distout (msg, cp, backup) == NOTOK)
 178             done (1);
 179         vec[vecp++] = "-dist";
 180     }
 181     vec[vecp] = NULL;
 182
 183     closefds (3);
 184
 185     if (distsw) {
 186         if ((child_id = fork()) == -1)
 187             adios("fork", "failed:");
 188
 189         if (child_id) {
 190             SIGNAL (SIGHUP, SIG_IGN);
 191             SIGNAL (SIGINT, SIG_IGN);
 192             SIGNAL (SIGQUIT, SIG_IGN);
 193             SIGNAL (SIGTERM, SIG_IGN);
 194
 195             status = pidwait(child_id, OK);
 196
 197             (void) m_unlink (msg);
 198             if (rename (backup, msg) == NOTOK)
 199                 adios (msg, "unable to rename %s to", backup);
 200             done (status);
 201         }
 202     }
 203
 204     /* Either the child, or no fork occurred. */
 205     execvp (postproc, vec);
 206     fprintf (stderr, "unable to exec ");
 207     perror (postproc);
 208     _exit(1);
 209 }