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         /* If no arguments, just incorporate new mail */
  64         if (argc == 1) {
  65                 execlp(incproc, mhbasename(incproc), NULL);
  66                 adios(incproc, "unable to exec");
  67         }
  68
  69         arguments = getarguments(invo_name, argc, argv, 0);
  70         argp = arguments;
  71
  72         while ((cp = *argp++)) {
  73                 if (*cp == '-') {
  74                         switch (smatch(++cp, switches)) {
  75                                 case AMBIGSW:
  76                                         ambigsw(cp, switches);
  77                                         done(1);
  78                                 case UNKWNSW:
  79                                         adios(NULL, "-%s unknown", cp);
  80
  81                                 case HELPSW:
  82                                         snprintf(buf, sizeof(buf), "%s [addrs ... [switches]]", invo_name);
  83                                         print_help(buf, switches, 0);
  84                                         done(1);
  85                                 case VERSIONSW:
  86                                         print_version(invo_name);
  87                                         done(1);
  88
  89                                 case FROMSW:
  90                                         if (!(from = *argp++) || *from == '-')
  91                                                 adios(NULL, "missing argument to %s", argp[-2]);
  92                                         continue;
  93
  94                                 case BODYSW:
  95                                         if (!(body = *argp++) || *body == '-')
  96                                                 adios(NULL, "missing argument to %s", argp[-2]);
  97                                         continue;
  98
  99                                 case CCSW:
 100                                         iscc++;
 101                                         continue;
 102
 103                                 case SUBJSW:
 104                                         if (!(subject = *argp++) || *subject == '-')
 105                                                 adios(NULL, "missing argument to %s", argp[-2]);
 106                                         continue;
 107
 108                                 case RESNDSW:
 109                                         resent++;
 110                                         continue;
 111
 112                                 case QUEUESW:
 113                                         queued++;
 114                                         continue;
 115                         }
 116                 }
 117                 if (iscc)
 118                         cclist = cclist ? add(cp, add(", ", cclist)) :
 119                                         getcpy(cp);
 120                 else
 121                         tolist = tolist ? add(cp, add(", ", tolist)) :
 122                                         getcpy(cp);
 123         }
 124
 125         if (tolist == NULL)
 126                 adios(NULL, "usage: %s addrs ... [switches]", invo_name);
 127
 128         tfile = m_mktemp2(NULL, invo_name, NULL, &out);
 129         if (tfile == NULL)
 130                 adios("mhmail", "unable to create temporary file");
 131         chmod(tfile, 0600);
 132         strncpy(tmpfil, tfile, sizeof(tmpfil));
 133
 134         SIGNAL2(SIGINT, intrser);
 135
 136         fprintf(out, "%sTo: %s\n", resent ? "Resent-" : "", tolist);
 137         if (cclist)
 138                 fprintf(out, "%sCc: %s\n", resent ? "Resent-" : "", cclist);
 139         if (subject)
 140                 fprintf(out, "%sSubject: %s\n", resent ? "Resent-" : "", subject);
 141         if (from)
 142                 fprintf(out, "%sFrom: %s\n", resent ? "Resent-" : "", from);
 143         if (!resent)
 144                 fputs("\n", out);
 145
 146         if (body) {
 147                 fprintf(out, "%s", body);
 148                 if (*body && *(body + strlen(body) - 1) != '\n')
 149                         fputs("\n", out);
 150         } else {
 151                 for (somebody = 0; (i = fread(buf, sizeof(*buf), sizeof(buf),
 152                                 stdin)) > 0; somebody++)
 153                         if (fwrite(buf, sizeof(*buf), i, out) != i)
 154                                 adios(tmpfil, "error writing");
 155                 if (!somebody) {
 156                         unlink(tmpfil);
 157                         done(1);
 158                 }
 159         }
 160         fclose(out);
 161
 162         nvec = 0;
 163         vec[nvec++] = mhbasename(postproc);
 164         vec[nvec++] = tmpfil;
 165         if (resent)
 166                 vec[nvec++] = "-dist";
 167         if (queued)
 168                 vec[nvec++] = "-queued";
 169         vec[nvec] = NULL;
 170
 171         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 172                 sleep(5);
 173
 174         if (child_id == NOTOK) {
 175                 /* report failure and then send it */
 176                 adios(NULL, "unable to fork");
 177         } else if (child_id) {
 178                 /* parent process */
 179                 if ((status = pidXwait(child_id, postproc))) {
 180                         fprintf(stderr, "Letter saved in dead.letter\n");
 181                         execl("/bin/mv", "mv", tmpfil, "dead.letter", NULL);
 182                         execl("/usr/bin/mv", "mv", tmpfil, "dead.letter",
 183                                         NULL);
 184                         perror("mv");
 185                         _exit(-1);
 186                 }
 187                 unlink(tmpfil);
 188                 done(status ? 1 : 0);
 189         } else {
 190                 /* child process */
 191                 execvp(postproc, vec);
 192                 fprintf(stderr, "unable to exec ");
 193                 perror(postproc);
 194                 _exit(-1);
 195         }
 196
 197         return 0;  /* dead code to satisfy the compiler */
 198 }
 199
 200
 201 static RETSIGTYPE
 202 intrser(int i)
 203 {
 204 #ifndef RELIABLE_SIGNALS
 205         if (i)
 206                 SIGNAL(i, SIG_IGN);
 207 #endif
 208
 209         unlink(tmpfil);
 210         done(i != 0 ? 1 : 0);
 211 }
 212