git.marmaro.de Git - mmh/blob - uip/mhmail.c

   1 /*
   2 ** mhmail.c -- simple mail program
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <h/signals.h>
  11 #include <h/utils.h>
  12 #include <signal.h>
  13
  14 static struct swit switches[] = {
  15 #define BODYSW  0
  16         { "body text", 0 },
  17 #define CCSW  1
  18         { "cc addrs ...", 0 },
  19 #define FROMSW  2
  20         { "from addr", 0 },
  21 #define SUBJSW  3
  22         { "subject text", 0 },
  23 #define VERSIONSW  4
  24         { "version", 0 },
  25 #define HELPSW  5
  26         { "help", 0 },
  27 #define RESNDSW  6
  28         { "resent", -6 },
  29 #define QUEUESW  7
  30         { "queued", -6 },
  31         { NULL, 0 }
  32 };
  33
  34 static char tmpfil[BUFSIZ];
  35
  36 /*
  37 ** static prototypes
  38 */
  39 static RETSIGTYPE intrser(int);
  40
  41
  42 int
  43 main(int argc, char **argv)
  44 {
  45         pid_t child_id;
  46         int status, i, iscc = 0, nvec;
  47         int queued = 0, resent = 0, somebody;
  48         char *cp, *tolist = NULL, *cclist = NULL, *subject = NULL;
  49         char *from = NULL, *body = NULL, **argp, **arguments;
  50         char *vec[5], buf[BUFSIZ];
  51         FILE *out;
  52         char *tfile = NULL;
  53
  54 #ifdef LOCALE
  55         setlocale(LC_ALL, "");
  56 #endif
  57         invo_name = mhbasename(argv[0]);
  58
  59         /* foil search of user profile/context */
  60         if (context_foil(NULL) == -1)
  61                 done(1);
  62
  63         /* Without arguments, exit. */
  64         if (argc == 1) {
  65                 adios(NULL, "no interactive mail shell. Use inc/scan/show instead.");
  66         }
  67
  68         arguments = getarguments(invo_name, argc, argv, 0);
  69         argp = arguments;
  70
  71         while ((cp = *argp++)) {
  72                 if (*cp == '-') {
  73                         switch (smatch(++cp, switches)) {
  74                         case AMBIGSW:
  75                                 ambigsw(cp, switches);
  76                                 done(1);
  77                         case UNKWNSW:
  78                                 adios(NULL, "-%s unknown", cp);
  79
  80                         case HELPSW:
  81                                 snprintf(buf, sizeof(buf),
  82                                                 "%s addrs... [switches]",
  83                                                 invo_name);
  84                                 print_help(buf, switches, 0);
  85                                 done(1);
  86                         case VERSIONSW:
  87                                 print_version(invo_name);
  88                                 done(1);
  89
  90                         case FROMSW:
  91                                 if (!(from = *argp++) || *from == '-')
  92                                         adios(NULL, "missing argument to %s",
  93                                                         argp[-2]);
  94                                 continue;
  95
  96                         case BODYSW:
  97                                 if (!(body = *argp++) || *body == '-')
  98                                         adios(NULL, "missing argument to %s",
  99                                                         argp[-2]);
 100                                 continue;
 101
 102                         case CCSW:
 103                                 iscc++;
 104                                 continue;
 105
 106                         case SUBJSW:
 107                                 if (!(subject = *argp++) || *subject == '-')
 108                                         adios(NULL, "missing argument to %s",
 109                                                         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)) :
 123                                         getcpy(cp);
 124                 else
 125                         tolist = tolist ? add(cp, add(", ", tolist)) :
 126                                         getcpy(cp);
 127         }
 128
 129         if (tolist == NULL)
 130                 adios(NULL, "usage: %s addrs ... [switches]", invo_name);
 131
 132         tfile = m_mktemp2("/tmp/", invo_name, NULL, &out);
 133         if (tfile == NULL)
 134                 adios("mhmail", "unable to create temporary file");
 135         chmod(tfile, 0600);
 136         strncpy(tmpfil, tfile, sizeof(tmpfil));
 137
 138         SIGNAL2(SIGINT, intrser);
 139
 140         fprintf(out, "%sTo: %s\n", resent ? "Resent-" : "", tolist);
 141         if (cclist)
 142                 fprintf(out, "%sCc: %s\n", resent ? "Resent-" : "", cclist);
 143         if (subject)
 144                 fprintf(out, "%sSubject: %s\n", resent ? "Resent-" : "", subject);
 145         if (from)
 146                 fprintf(out, "%sFrom: %s\n", resent ? "Resent-" : "", from);
 147         if (!resent)
 148                 fputs("\n", out);
 149
 150         if (body) {
 151                 fprintf(out, "%s", body);
 152                 if (*body && *(body + strlen(body) - 1) != '\n')
 153                         fputs("\n", out);
 154         } else {
 155                 for (somebody = 0; (i = fread(buf, sizeof(*buf), sizeof(buf),
 156                                 stdin)) > 0; 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++] = mhbasename(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         if ((child_id = fork()) == NOTOK) {
 176                 /* report failure and then send it */
 177                 adios(NULL, "unable to fork");
 178         } else if (child_id) {
 179                 /* parent process */
 180                 if ((status = pidXwait(child_id, postproc))) {
 181                         fprintf(stderr, "Letter saved in dead.letter\n");
 182                         execl("/bin/mv", "mv", tmpfil, "dead.letter", NULL);
 183                         execl("/usr/bin/mv", "mv", tmpfil, "dead.letter",
 184                                         NULL);
 185                         perror("mv");
 186                         _exit(-1);
 187                 }
 188                 unlink(tmpfil);
 189                 done(status ? 1 : 0);
 190         } else {
 191                 /* child process */
 192                 execvp(postproc, vec);
 193                 fprintf(stderr, "unable to exec ");
 194                 perror(postproc);
 195                 _exit(-1);
 196         }
 197
 198         return 0;  /* dead code to satisfy the compiler */
 199 }
 200
 201
 202 static RETSIGTYPE
 203 intrser(int i)
 204 {
 205 #ifndef RELIABLE_SIGNALS
 206         if (i)
 207                 SIGNAL(i, SIG_IGN);
 208 #endif
 209
 210         unlink(tmpfil);
 211         done(i != 0 ? 1 : 0);
 212 }
 213