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

   1
   2 /*
   3  * mhmail.c -- simple mail program
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/mts.h>
  12 #include <h/signals.h>
  13 #include <h/utils.h>
  14 #include <signal.h>
  15
  16 static struct swit switches[] = {
  17 #define BODYSW             0
  18     { "body text", 0 },
  19 #define CCSW               1
  20     { "cc addrs ...", 0 },
  21 #define FROMSW             2
  22     { "from addr", 0 },
  23 #define SUBJSW             3
  24     { "subject text", 0 },
  25 #define VERSIONSW          4
  26     { "version", 0 },
  27 #define HELPSW             5
  28     { "help", 0 },
  29 #define RESNDSW            6
  30     { "resent", -6 },
  31 #define QUEUESW            7
  32     { "queued", -6 },
  33     { NULL, 0 }
  34 };
  35
  36 static char tmpfil[BUFSIZ];
  37
  38 /*
  39  * static prototypes
  40  */
  41 static void intrser (int);
  42
  43
  44 int
  45 main (int argc, char **argv)
  46 {
  47     pid_t child_id;
  48     int status, iscc = 0, nvec;
  49     size_t i;
  50     int queued = 0, resent = 0, somebody;
  51     char *cp, *tolist = NULL, *cclist = NULL, *subject = NULL;
  52     char *from = NULL, *body = NULL, **argp, **arguments;
  53     char *vec[5], buf[BUFSIZ];
  54     FILE *out;
  55     char *tfile = NULL;
  56
  57 #ifdef LOCALE
  58     setlocale(LC_ALL, "");
  59 #endif
  60     invo_name = r1bindex (argv[0], '/');
  61
  62     /* foil search of user profile/context */
  63     if (context_foil (NULL) == -1)
  64         done (1);
  65
  66     /* If no arguments, just incorporate new mail */
  67     if (argc == 1) {
  68         execlp (incproc, r1bindex (incproc, '/'), NULL);
  69         adios (incproc, "unable to exec");
  70     }
  71
  72     arguments = getarguments (invo_name, argc, argv, 0);
  73     argp = arguments;
  74
  75     while ((cp = *argp++)) {
  76         if (*cp == '-') {
  77             switch (smatch (++cp, switches)) {
  78                 case AMBIGSW:
  79                     ambigsw (cp, switches);
  80                     done (1);
  81                 case UNKWNSW:
  82                     adios (NULL, "-%s unknown", cp);
  83
  84                 case HELPSW:
  85                     snprintf (buf, sizeof(buf), "%s [addrs ... [switches]]",
  86                         invo_name);
  87                     print_help (buf, switches, 0);
  88                     done (0);
  89                 case VERSIONSW:
  90                     print_version(invo_name);
  91                     done (0);
  92
  93                 case FROMSW:
  94                     if (!(from = *argp++) || *from == '-')
  95                         adios (NULL, "missing argument to %s", argp[-2]);
  96                     continue;
  97
  98                 case BODYSW:
  99                     if (!(body = *argp++) || *body == '-')
 100                         adios (NULL, "missing argument to %s", argp[-2]);
 101                     continue;
 102
 103                 case CCSW:
 104                     iscc++;
 105                     continue;
 106
 107                 case SUBJSW:
 108                     if (!(subject = *argp++) || *subject == '-')
 109                         adios (NULL, "missing argument to %s", argp[-2]);
 110                     continue;
 111
 112                 case RESNDSW:
 113                     resent++;
 114                     continue;
 115
 116                 case QUEUESW:
 117                     queued++;
 118                     continue;
 119             }
 120         }
 121         if (iscc)
 122             cclist = cclist ? add (cp, add (", ", cclist)) : getcpy (cp);
 123         else
 124             tolist = tolist ? add (cp, add (", ", tolist)) : getcpy (cp);
 125     }
 126
 127     if (tolist == NULL)
 128         adios (NULL, "usage: %s addrs ... [switches]", invo_name);
 129
 130     tfile = m_mktemp2(NULL, invo_name, NULL, &out);
 131     if (tfile == NULL) adios("mhmail", "unable to create temporary file");
 132     chmod(tfile, 0600);
 133     strncpy (tmpfil, tfile, sizeof(tmpfil));
 134
 135     SIGNAL2 (SIGINT, intrser);
 136
 137     fprintf (out, "%sTo: %s\n", resent ? "Resent-" : "", tolist);
 138     if (cclist)
 139         fprintf (out, "%scc: %s\n", resent ? "Resent-" : "", cclist);
 140     if (subject)
 141         fprintf (out, "%sSubject: %s\n", resent ? "Resent-" : "", subject);
 142     if (from)
 143         fprintf (out, "%sFrom: %s\n", resent ? "Resent-" : "", from);
 144     else
 145         fprintf (out, "From: %s\n", getlocalmbox ());
 146     if (!resent)
 147         fputs ("\n", out);
 148
 149     if (body) {
 150         fprintf (out, "%s", body);
 151         if (*body && *(body + strlen (body) - 1) != '\n')
 152             fputs ("\n", out);
 153     } else {
 154         for (somebody = 0;
 155                 (i = fread (buf, sizeof(*buf), sizeof(buf), stdin)) > 0;
 156                 somebody++)
 157             if (fwrite (buf, sizeof(*buf), i, out) != i)
 158                 adios (tmpfil, "error writing");
 159         if (!somebody) {
 160             unlink (tmpfil);
 161             done (1);
 162         }
 163     }
 164     fclose (out);
 165
 166     nvec = 0;
 167     vec[nvec++] = r1bindex (postproc, '/');
 168     vec[nvec++] = tmpfil;
 169     if (resent)
 170         vec[nvec++] = "-dist";
 171     if (queued)
 172         vec[nvec++] = "-queued";
 173     vec[nvec] = NULL;
 174
 175     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 176         sleep (5);
 177
 178     if (child_id == NOTOK) {
 179         /* report failure and then send it */
 180         adios (NULL, "unable to fork");
 181     } else if (child_id) {
 182         /* parent process */
 183         if ((status = pidXwait(child_id, postproc))) {
 184             fprintf (stderr, "Letter saved in dead.letter\n");
 185             execl ("/bin/mv", "mv", tmpfil, "dead.letter", NULL);
 186             execl ("/usr/bin/mv", "mv", tmpfil, "dead.letter", NULL);
 187             perror ("mv");
 188             _exit (-1);
 189         }
 190         unlink (tmpfil);
 191         done (status ? 1 : 0);
 192     } else {
 193         /* child process */
 194         execvp (postproc, vec);
 195         fprintf (stderr, "unable to exec ");
 196         perror (postproc);
 197         _exit (-1);
 198     }
 199
 200     return 0;  /* dead code to satisfy the compiler */
 201 }
 202
 203
 204 static void
 205 intrser (int i)
 206 {
 207     unlink (tmpfil);
 208     done (i != 0 ? 1 : 0);
 209 }
 210