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