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         { "bodytext 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         { NULL, 0 }
  30 };
  31
  32 static char tmpfil[BUFSIZ];
  33
  34 /*
  35 ** static prototypes
  36 */
  37 static void intrser(int);
  38
  39
  40 int
  41 main(int argc, char **argv)
  42 {
  43         pid_t child_id;
  44         int status, iscc = 0, nvec;
  45         char *cp, *tolist = NULL, *cclist = NULL, *subject = NULL;
  46         char *from = NULL, *body = NULL, **argp, **arguments;
  47         char *vec[5], buf[BUFSIZ];
  48         FILE *out;
  49         char *tfile = NULL;
  50
  51         setlocale(LC_ALL, "");
  52         invo_name = mhbasename(argv[0]);
  53
  54         /* foil search of user profile/context */
  55         if (context_foil(NULL) == -1)
  56                 done(1);
  57
  58         /* Without arguments, exit. */
  59         if (argc == 1) {
  60                 adios(NULL, "no interactive mail shell. Use inc/scan/show instead.");
  61         }
  62
  63         arguments = getarguments(invo_name, argc, argv, 0);
  64         argp = arguments;
  65
  66         while ((cp = *argp++)) {
  67                 if (*cp == '-') {
  68                         switch (smatch(++cp, switches)) {
  69                         case AMBIGSW:
  70                                 ambigsw(cp, switches);
  71                                 done(1);
  72                         case UNKWNSW:
  73                                 adios(NULL, "-%s unknown", cp);
  74
  75                         case HELPSW:
  76                                 snprintf(buf, sizeof(buf),
  77                                                 "%s addrs... [switches]",
  78                                                 invo_name);
  79                                 print_help(buf, switches, 0);
  80                                 done(1);
  81                         case VERSIONSW:
  82                                 print_version(invo_name);
  83                                 done(1);
  84
  85                         case FROMSW:
  86                                 if (!(from = *argp++) || *from == '-')
  87                                         adios(NULL, "missing argument to %s",
  88                                                         argp[-2]);
  89                                 continue;
  90
  91                         case BODYSW:
  92                                 if (!(body = *argp++) || *body == '-')
  93                                         adios(NULL, "missing argument to %s",
  94                                                         argp[-2]);
  95                                 continue;
  96
  97                         case CCSW:
  98                                 iscc++;
  99                                 continue;
 100
 101                         case SUBJSW:
 102                                 if (!(subject = *argp++) || *subject == '-')
 103                                         adios(NULL, "missing argument to %s",
 104                                                         argp[-2]);
 105                                 continue;
 106                         }
 107                 }
 108                 if (iscc)
 109                         cclist = cclist ? add(cp, add(", ", cclist)) :
 110                                         getcpy(cp);
 111                 else
 112                         tolist = tolist ? add(cp, add(", ", tolist)) :
 113                                         getcpy(cp);
 114         }
 115
 116         if (tolist == NULL)
 117                 adios(NULL, "usage: %s addrs ... [switches]", invo_name);
 118
 119         tfile = m_mktemp2("/tmp/", invo_name, NULL, &out);
 120         if (tfile == NULL)
 121                 adios("mhmail", "unable to create temporary file");
 122         chmod(tfile, 0600);
 123         strncpy(tmpfil, tfile, sizeof(tmpfil));
 124
 125         SIGNAL2(SIGINT, intrser);
 126
 127         fprintf(out, "To: %s\n", tolist);
 128         if (cclist)
 129                 fprintf(out, "Cc: %s\n", cclist);
 130         if (subject)
 131                 fprintf(out, "Subject: %s\n", subject);
 132         if (from)
 133                 fprintf(out, "From: %s\n", from);
 134         fputs("\n", out);
 135
 136         if (body) {
 137                 fprintf(out, "%s", body);
 138                 if (*body && body[strlen(body) - 1] != '\n')
 139                         fputs("\n", out);
 140         } else {
 141                 int empty = 1;
 142
 143                 while (fgets(buf, sizeof buf, stdin)) {
 144                         if (buf[0]=='.' && buf[1]=='\n') {
 145                                 /* A period alone on a line means EOF. */
 146                                 break;
 147                         }
 148                         empty = 0;
 149                         if (fputs(buf, out) == EOF) {
 150                                 adios(tmpfil, "error writing");
 151                         }
 152                 }
 153                 if (empty) {
 154                         unlink(tmpfil);
 155                         adios(NULL, "not sending message with empty body");
 156                 }
 157         }
 158         fclose(out);
 159
 160         nvec = 0;
 161         vec[nvec++] = "spost";
 162         vec[nvec++] = tmpfil;
 163         vec[nvec] = NULL;
 164
 165         if ((child_id = fork()) == NOTOK) {
 166                 /* report failure and then send it */
 167                 adios(NULL, "unable to fork");
 168
 169         } else if (child_id == 0) {
 170                 /* child process */
 171                 execvp(*vec, vec);
 172                 fprintf(stderr, "unable to exec ");
 173                 perror(*vec);
 174                 _exit(-1);
 175
 176         } else {
 177                 /* parent process */
 178                 if ((status = pidXwait(child_id, *vec))) {
 179                         /* spost failed, save draft as dead.letter */
 180                         int in, out;
 181
 182                         in = open(tmpfil, O_RDONLY);
 183                         out = creat("dead.letter", 0600);
 184                         if (in == -1 || out == -1) {
 185                                 fprintf(stderr, "Letter left at %s.\n",
 186                                                 tmpfil);
 187                                 done(status ? 1 : 0);
 188                         }
 189                         cpydata(in, out, tmpfil, "dead.letter");
 190                         close(in);
 191                         close(out);
 192                         fprintf(stderr, "Letter saved in dead.letter\n");
 193                 }
 194                 unlink(tmpfil);
 195                 done(status ? 1 : 0);
 196         }
 197
 198         return 0;  /* dead code to satisfy the compiler */
 199 }
 200
 201
 202 static void
 203 intrser(int i)
 204 {
 205         unlink(tmpfil);
 206         done(i != 0 ? 1 : 0);
 207 }
 208