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/smatch.h"
  10 #include "sbr/closefds.h"
  11 #include "sbr/m_draft.h"
  12 #include "sbr/context_find.h"
  13 #include "sbr/brkstring.h"
  14 #include "sbr/ambigsw.h"
  15 #include "sbr/path.h"
  16 #include "sbr/print_version.h"
  17 #include "sbr/print_help.h"
  18 #include "sbr/error.h"
  19 #include "h/done.h"
  20 #include "h/utils.h"
  21 #include "h/signals.h"
  22 #include "sbr/m_maildir.h"
  23 #include "sbr/m_mktemp.h"
  24
  25 #ifndef CYRUS_SASL
  26 # define SASLminc(a) (a)
  27 #else /* CYRUS_SASL */
  28 # define SASLminc(a)  0
  29 #endif /* CYRUS_SASL */
  30
  31 #ifndef TLS_SUPPORT
  32 # define TLSminc(a)  (a)
  33 #else /* TLS_SUPPORT */
  34 # define TLSminc(a)   0
  35 #endif /* TLS_SUPPORT */
  36
  37 #define WHOM_SWITCHES \
  38     X("alias aliasfile", 0, ALIASW) \
  39     X("check", 0, CHKSW) \
  40     X("nocheck", 0, NOCHKSW) \
  41     X("draft", 0, DRAFTSW) \
  42     X("draftfolder +folder", 6, DFOLDSW) \
  43     X("draftmessage msg", 6, DMSGSW) \
  44     X("nodraftfolder", 0, NDFLDSW) \
  45     X("version", 0, VERSIONSW) \
  46     X("help", 0, HELPSW) \
  47     X("client host", -6, CLIESW) \
  48     X("server host", 0, SERVSW) \
  49     X("snoop", 0, SNOOPSW) \
  50     X("sasl", SASLminc(4), SASLSW) \
  51     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  52     X("user username", SASLminc(-4), USERSW) \
  53     X("port server port name/number", 4, PORTSW) \
  54     X("tls", TLSminc(-3), TLSSW) \
  55     X("initialtls", TLSminc(-10), INITTLSSW) \
  56     X("notls", TLSminc(-5), NTLSSW) \
  57     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  58
  59 #define X(sw, minchars, id) id,
  60 DEFINE_SWITCH_ENUM(WHOM);
  61 #undef X
  62
  63 #define X(sw, minchars, id) { sw, minchars, id },
  64 DEFINE_SWITCH_ARRAY(WHOM, switches);
  65 #undef X
  66
  67
  68 int
  69 main (int argc, char **argv)
  70 {
  71     pid_t child_id = OK;
  72     int status, isdf = 0;
  73     int vecp = 0;
  74     bool distsw;
  75     char *cp, *dfolder = NULL, *dmsg = NULL;
  76     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  77     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  78
  79     if (nmh_init(argv[0], true, false)) { return 1; }
  80
  81     arguments = getarguments (invo_name, argc, argv, 1);
  82     argp = arguments;
  83
  84     vec[vecp++] = invo_name;
  85     vec[vecp++] = "-whom";
  86     vec[vecp++] = "-library";
  87     vec[vecp++] = mh_xstrdup(m_maildir(""));
  88
  89     if ((cp = context_find ("credentials"))) {
  90         /* post doesn't read context so need to pass credentials. */
  91         vec[vecp++] = "-credentials";
  92         vec[vecp++] = cp;
  93     }
  94
  95     /* Don't need to feed fileproc or mhlproc to post because
  96        it doesn't use them when used for whom. */
  97
  98     while ((cp = *argp++)) {
  99         if (*cp == '-') {
 100             switch (smatch (++cp, switches)) {
 101                 case AMBIGSW:
 102                     ambigsw (cp, switches);
 103                     done (1);
 104                 case UNKWNSW:
 105                     die("-%s unknown", cp);
 106
 107                 case HELPSW:
 108                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 109                     print_help (buf, switches, 1);
 110                     done (0);
 111                 case VERSIONSW:
 112                     print_version(invo_name);
 113                     done (0);
 114
 115                 case CHKSW:
 116                 case NOCHKSW:
 117                 case SNOOPSW:
 118                 case SASLSW:
 119                 case TLSSW:
 120                 case INITTLSSW:
 121                 case NTLSSW:
 122                     vec[vecp++] = --cp;
 123                     continue;
 124
 125                 case DRAFTSW:
 126                     msg = draft;
 127                     continue;
 128
 129                 case DFOLDSW:
 130                     if (dfolder)
 131                         die("only one draft folder at a time!");
 132                     if (!(cp = *argp++) || *cp == '-')
 133                         die("missing argument to %s", argp[-2]);
 134                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 135                             *cp != '@' ? TFOLDER : TSUBCWF);
 136                     continue;
 137                 case DMSGSW:
 138                     if (dmsg)
 139                         die("only one draft message at a time!");
 140                     if (!(dmsg = *argp++) || *dmsg == '-')
 141                         die("missing argument to %s", argp[-2]);
 142                     continue;
 143                 case NDFLDSW:
 144                     dfolder = NULL;
 145                     isdf = NOTOK;
 146                     continue;
 147
 148                 case ALIASW:
 149                 case CLIESW:
 150                 case SERVSW:
 151                 case USERSW:
 152                 case PORTSW:
 153                 case SASLMECHSW:
 154                 case MTSSW:
 155                     vec[vecp++] = --cp;
 156                     if (!(cp = *argp++) || *cp == '-')
 157                         die("missing argument to %s", argp[-2]);
 158                     vec[vecp++] = cp;
 159                     continue;
 160             }
 161         }
 162         if (msg)
 163             die("only one draft at a time!");
 164         vec[vecp++] = msg = cp;
 165     }
 166
 167     /* allow Aliasfile: profile entry */
 168     if ((cp = context_find ("Aliasfile"))) {
 169         char *dp = NULL;
 170
 171         for (ap = brkstring(dp = mh_xstrdup(cp), " ", "\n"); ap && *ap; ap++) {
 172             vec[vecp++] = "-alias";
 173             vec[vecp++] = *ap;
 174         }
 175     }
 176
 177     if (msg == NULL) {
 178             cp  = mh_xstrdup(m_draft(dfolder, dmsg, 1, &isdf));
 179         msg = vec[vecp++] = cp;
 180     }
 181
 182     distsw = (cp = getenv("mhdist")) && *cp && atoi(cp) &&
 183         (cp = getenv("mhaltmsg")) && *cp;
 184     if (distsw) {
 185         if (distout (msg, cp, backup) == NOTOK)
 186             done (1);
 187         vec[vecp++] = "-dist";
 188     }
 189     vec[vecp] = NULL;
 190
 191     closefds (3);
 192
 193     if (distsw) {
 194         if ((child_id = fork()) == -1)
 195             adios("fork", "failed:");
 196
 197         if (child_id) {
 198             SIGNAL (SIGHUP, SIG_IGN);
 199             SIGNAL (SIGINT, SIG_IGN);
 200             SIGNAL (SIGQUIT, SIG_IGN);
 201             SIGNAL (SIGTERM, SIG_IGN);
 202
 203             status = pidwait(child_id, OK);
 204
 205             (void) m_unlink (msg);
 206             if (rename (backup, msg) == NOTOK)
 207                 adios (msg, "unable to rename %s to", backup);
 208             done (status);
 209         }
 210     }
 211
 212     /* Either the child, or no fork occurred. */
 213     execvp (postproc, vec);
 214     fprintf (stderr, "unable to exec ");
 215     perror (postproc);
 216     _exit(1);
 217 }