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/getarguments.h"
  10 #include "sbr/smatch.h"
  11 #include "sbr/closefds.h"
  12 #include "sbr/m_draft.h"
  13 #include "sbr/context_find.h"
  14 #include "sbr/brkstring.h"
  15 #include "sbr/ambigsw.h"
  16 #include "sbr/path.h"
  17 #include "sbr/print_version.h"
  18 #include "sbr/print_help.h"
  19 #include "sbr/error.h"
  20 #include "h/done.h"
  21 #include "h/utils.h"
  22 #include "h/signals.h"
  23 #include "sbr/m_maildir.h"
  24 #include "sbr/m_mktemp.h"
  25
  26 #ifndef CYRUS_SASL
  27 # define SASLminc(a) (a)
  28 #else /* CYRUS_SASL */
  29 # define SASLminc(a)  0
  30 #endif /* CYRUS_SASL */
  31
  32 #ifndef TLS_SUPPORT
  33 # define TLSminc(a)  (a)
  34 #else /* TLS_SUPPORT */
  35 # define TLSminc(a)   0
  36 #endif /* TLS_SUPPORT */
  37
  38 #define WHOM_SWITCHES \
  39     X("alias aliasfile", 0, ALIASW) \
  40     X("check", 0, CHKSW) \
  41     X("nocheck", 0, NOCHKSW) \
  42     X("draft", 0, DRAFTSW) \
  43     X("draftfolder +folder", 6, DFOLDSW) \
  44     X("draftmessage msg", 6, DMSGSW) \
  45     X("nodraftfolder", 0, NDFLDSW) \
  46     X("version", 0, VERSIONSW) \
  47     X("help", 0, HELPSW) \
  48     X("client host", -6, CLIESW) \
  49     X("server host", 0, SERVSW) \
  50     X("snoop", 0, SNOOPSW) \
  51     X("sasl", SASLminc(4), SASLSW) \
  52     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  53     X("user username", SASLminc(-4), USERSW) \
  54     X("port server port name/number", 4, PORTSW) \
  55     X("tls", TLSminc(-3), TLSSW) \
  56     X("initialtls", TLSminc(-10), INITTLSSW) \
  57     X("notls", TLSminc(-5), NTLSSW) \
  58     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  59
  60 #define X(sw, minchars, id) id,
  61 DEFINE_SWITCH_ENUM(WHOM);
  62 #undef X
  63
  64 #define X(sw, minchars, id) { sw, minchars, id },
  65 DEFINE_SWITCH_ARRAY(WHOM, switches);
  66 #undef X
  67
  68
  69 int
  70 main (int argc, char **argv)
  71 {
  72     pid_t child_id = OK;
  73     int status, isdf = 0;
  74     int vecp = 0;
  75     bool distsw;
  76     char *cp, *dfolder = NULL, *dmsg = NULL;
  77     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  78     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  79
  80     if (nmh_init(argv[0], true, false)) { return 1; }
  81
  82     arguments = getarguments (invo_name, argc, argv, 1);
  83     argp = arguments;
  84
  85     vec[vecp++] = invo_name;
  86     vec[vecp++] = "-whom";
  87     vec[vecp++] = "-library";
  88     vec[vecp++] = mh_xstrdup(m_maildir(""));
  89
  90     if ((cp = context_find ("credentials"))) {
  91         /* post doesn't read context so need to pass credentials. */
  92         vec[vecp++] = "-credentials";
  93         vec[vecp++] = cp;
  94     }
  95
  96     /* Don't need to feed fileproc or mhlproc to post because
  97        it doesn't use them when used for whom. */
  98
  99     while ((cp = *argp++)) {
 100         if (*cp == '-') {
 101             switch (smatch (++cp, switches)) {
 102                 case AMBIGSW:
 103                     ambigsw (cp, switches);
 104                     done (1);
 105                 case UNKWNSW:
 106                     die("-%s unknown", cp);
 107
 108                 case HELPSW:
 109                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 110                     print_help (buf, switches, 1);
 111                     done (0);
 112                 case VERSIONSW:
 113                     print_version(invo_name);
 114                     done (0);
 115
 116                 case CHKSW:
 117                 case NOCHKSW:
 118                 case SNOOPSW:
 119                 case SASLSW:
 120                 case TLSSW:
 121                 case INITTLSSW:
 122                 case NTLSSW:
 123                     vec[vecp++] = --cp;
 124                     continue;
 125
 126                 case DRAFTSW:
 127                     msg = draft;
 128                     continue;
 129
 130                 case DFOLDSW:
 131                     if (dfolder)
 132                         die("only one draft folder at a time!");
 133                     if (!(cp = *argp++) || *cp == '-')
 134                         die("missing argument to %s", argp[-2]);
 135                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 136                             *cp != '@' ? TFOLDER : TSUBCWF);
 137                     continue;
 138                 case DMSGSW:
 139                     if (dmsg)
 140                         die("only one draft message at a time!");
 141                     if (!(dmsg = *argp++) || *dmsg == '-')
 142                         die("missing argument to %s", argp[-2]);
 143                     continue;
 144                 case NDFLDSW:
 145                     dfolder = NULL;
 146                     isdf = NOTOK;
 147                     continue;
 148
 149                 case ALIASW:
 150                 case CLIESW:
 151                 case SERVSW:
 152                 case USERSW:
 153                 case PORTSW:
 154                 case SASLMECHSW:
 155                 case MTSSW:
 156                     vec[vecp++] = --cp;
 157                     if (!(cp = *argp++) || *cp == '-')
 158                         die("missing argument to %s", argp[-2]);
 159                     vec[vecp++] = cp;
 160                     continue;
 161             }
 162         }
 163         if (msg)
 164             die("only one draft at a time!");
 165         vec[vecp++] = msg = cp;
 166     }
 167
 168     /* allow Aliasfile: profile entry */
 169     if ((cp = context_find ("Aliasfile"))) {
 170         char *dp = NULL;
 171
 172         for (ap = brkstring(dp = mh_xstrdup(cp), " ", "\n"); ap && *ap; ap++) {
 173             vec[vecp++] = "-alias";
 174             vec[vecp++] = *ap;
 175         }
 176     }
 177
 178     if (msg == NULL) {
 179             cp  = mh_xstrdup(m_draft(dfolder, dmsg, 1, &isdf));
 180         msg = vec[vecp++] = cp;
 181     }
 182
 183     distsw = (cp = getenv("mhdist")) && *cp && atoi(cp) &&
 184         (cp = getenv("mhaltmsg")) && *cp;
 185     if (distsw) {
 186         if (distout (msg, cp, backup) == NOTOK)
 187             done (1);
 188         vec[vecp++] = "-dist";
 189     }
 190     vec[vecp] = NULL;
 191
 192     closefds (3);
 193
 194     if (distsw) {
 195         if ((child_id = fork()) == -1)
 196             adios("fork", "failed:");
 197
 198         if (child_id) {
 199             SIGNAL (SIGHUP, SIG_IGN);
 200             SIGNAL (SIGINT, SIG_IGN);
 201             SIGNAL (SIGQUIT, SIG_IGN);
 202             SIGNAL (SIGTERM, SIG_IGN);
 203
 204             status = pidwait(child_id, OK);
 205
 206             (void) m_unlink (msg);
 207             if (rename (backup, msg) == NOTOK)
 208                 adios (msg, "unable to rename %s to", backup);
 209             done (status);
 210         }
 211     }
 212
 213     /* Either the child, or no fork occurred. */
 214     execvp (postproc, vec);
 215     fprintf (stderr, "unable to exec ");
 216     perror (postproc);
 217     _exit(1);
 218 }