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