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