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 #include <fcntl.h>
  14
  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         unsigned int 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 = mhbasename(argv[0]);
  61
  62         /* foil search of user profile/context */
  63         if (context_foil(NULL) == -1)
  64                 done(1);
  65
  66         /* Without arguments, exit. */
  67         if (argc == 1) {
  68                 adios(NULL, "no interactive mail shell. Use inc/scan/show instead.");
  69         }
  70
  71         arguments = getarguments(invo_name, argc, argv, 0);
  72         argp = arguments;
  73
  74         while ((cp = *argp++)) {
  75                 if (*cp == '-') {
  76                         switch (smatch(++cp, switches)) {
  77                         case AMBIGSW:
  78                                 ambigsw(cp, switches);
  79                                 done(1);
  80                         case UNKWNSW:
  81                                 adios(NULL, "-%s unknown", cp);
  82
  83                         case HELPSW:
  84                                 snprintf(buf, sizeof(buf),
  85                                                 "%s addrs... [switches]",
  86                                                 invo_name);
  87                                 print_help(buf, switches, 0);
  88                                 done(1);
  89                         case VERSIONSW:
  90                                 print_version(invo_name);
  91                                 done(1);
  92
  93                         case FROMSW:
  94                                 if (!(from = *argp++) || *from == '-')
  95                                         adios(NULL, "missing argument to %s",
  96                                                         argp[-2]);
  97                                 continue;
  98
  99                         case BODYSW:
 100                                 if (!(body = *argp++) || *body == '-')
 101                                         adios(NULL, "missing argument to %s",
 102                                                         argp[-2]);
 103                                 continue;
 104
 105                         case CCSW:
 106                                 iscc++;
 107                                 continue;
 108
 109                         case SUBJSW:
 110                                 if (!(subject = *argp++) || *subject == '-')
 111                                         adios(NULL, "missing argument to %s",
 112                                                         argp[-2]);
 113                                 continue;
 114
 115                         case RESNDSW:
 116                                 resent++;
 117                                 continue;
 118
 119                         case QUEUESW:
 120                                 queued++;
 121                                 continue;
 122                         }
 123                 }
 124                 if (iscc)
 125                         cclist = cclist ? add(cp, add(", ", cclist)) :
 126                                         getcpy(cp);
 127                 else
 128                         tolist = tolist ? add(cp, add(", ", tolist)) :
 129                                         getcpy(cp);
 130         }
 131
 132         if (tolist == NULL)
 133                 adios(NULL, "usage: %s addrs ... [switches]", invo_name);
 134
 135         tfile = m_mktemp2("/tmp/", invo_name, NULL, &out);
 136         if (tfile == NULL)
 137                 adios("mhmail", "unable to create temporary file");
 138         chmod(tfile, 0600);
 139         strncpy(tmpfil, tfile, sizeof(tmpfil));
 140
 141         SIGNAL2(SIGINT, intrser);
 142
 143         fprintf(out, "%sTo: %s\n", resent ? "Resent-" : "", tolist);
 144         if (cclist)
 145                 fprintf(out, "%sCc: %s\n", resent ? "Resent-" : "", cclist);
 146         if (subject)
 147                 fprintf(out, "%sSubject: %s\n", resent ? "Resent-" : "", subject);
 148         if (from)
 149                 fprintf(out, "%sFrom: %s\n", resent ? "Resent-" : "", from);
 150         if (!resent)
 151                 fputs("\n", out);
 152
 153         if (body) {
 154                 fprintf(out, "%s", body);
 155                 if (*body && *(body + strlen(body) - 1) != '\n')
 156                         fputs("\n", out);
 157         } else {
 158                 for (somebody = 0; (i = fread(buf, sizeof(*buf), sizeof(buf),
 159                                 stdin)) > 0; somebody++)
 160                         if (fwrite(buf, sizeof(*buf), i, out) != i)
 161                                 adios(tmpfil, "error writing");
 162                 if (!somebody) {
 163                         unlink(tmpfil);
 164                         done(1);
 165                 }
 166         }
 167         fclose(out);
 168
 169         nvec = 0;
 170         vec[nvec++] = "spost";
 171         vec[nvec++] = tmpfil;
 172         if (resent)
 173                 vec[nvec++] = "-dist";
 174         if (queued)
 175                 vec[nvec++] = "-queued";
 176         vec[nvec] = NULL;
 177
 178         if ((child_id = fork()) == NOTOK) {
 179                 /* report failure and then send it */
 180                 adios(NULL, "unable to fork");
 181
 182         } else if (child_id == 0) {
 183                 /* child process */
 184                 execvp(*vec, vec);
 185                 fprintf(stderr, "unable to exec ");
 186                 perror(*vec);
 187                 _exit(-1);
 188
 189         } else {
 190                 /* parent process */
 191                 if ((status = pidXwait(child_id, *vec))) {
 192                         /* spost failed, save draft as dead.letter */
 193                         int in, out;
 194
 195                         in = open(tmpfil, O_RDONLY);
 196                         out = creat("dead.letter", 0600);
 197                         if (in == -1 || out == -1) {
 198                                 fprintf(stderr, "Letter left at %s.\n",
 199                                                 tmpfil);
 200                                 done(status ? 1 : 0);
 201                         }
 202                         cpydata(in, out, tmpfil, "dead.letter");
 203                         close(in);
 204                         close(out);
 205                         fprintf(stderr, "Letter saved in dead.letter\n");
 206                 }
 207                 unlink(tmpfil);
 208                 done(status ? 1 : 0);
 209         }
 210
 211         return 0;  /* dead code to satisfy the compiler */
 212 }
 213
 214
 215 static void
 216 intrser(int i)
 217 {
 218         unlink(tmpfil);
 219         done(i != 0 ? 1 : 0);
 220 }
 221