diplodocus.org Git - nmh/blob - uip/install-mh.c

   1 /*
   2  * install-mh.c -- initialize the nmh environment of a new user
   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>                               /* mh internals */
  10 #include <h/utils.h>
  11 #include <pwd.h>                                /* structure for getpwuid() results */
  12
  13 #define INSTALLMH_SWITCHES \
  14     X("auto", 0, AUTOSW) \
  15     X("version", 0, VERSIONSW) \
  16     X("help", 0, HELPSW) \
  17     X("check", 1, CHECKSW) \
  18
  19 #define X(sw, minchars, id) id,
  20 DEFINE_SWITCH_ENUM(INSTALLMH);
  21 #undef X
  22
  23 #define X(sw, minchars, id) { sw, minchars, id },
  24 DEFINE_SWITCH_ARRAY(INSTALLMH, switches);
  25 #undef X
  26
  27
  28 int
  29 main (int argc, char **argv)
  30 {
  31     int autof = 0;
  32     char *cp, buf[BUFSIZ];
  33     const char *pathname;
  34     char *dp, **arguments, **argp;
  35     struct node *np;
  36     struct passwd *pw;
  37     struct stat st;
  38     FILE *in, *out;
  39     int         check;
  40
  41     if (nmh_init(argv[0], 0 /* use context_foil() */ )) { return 1; }
  42
  43     arguments = getarguments (invo_name, argc, argv, 0);
  44     argp = arguments;
  45
  46     check = 0;
  47
  48     while ((dp = *argp++)) {
  49         if (*dp == '-') {
  50             switch (smatch (++dp, switches)) {
  51                 case AMBIGSW:
  52                     ambigsw (dp, switches);
  53                     done (1);
  54                 case UNKWNSW:
  55                     adios (NULL, "-%s unknown\n", dp);
  56
  57                 case HELPSW:
  58                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  59                     print_help (buf, switches, 0);
  60                     done (0);
  61                 case VERSIONSW:
  62                     print_version(invo_name);
  63                     done (0);
  64
  65                 case AUTOSW:
  66                     autof++;
  67                     continue;
  68
  69                 case CHECKSW:
  70                     check = 1;
  71                     continue;
  72             }
  73         } else {
  74             adios (NULL, "%s is invalid argument", dp);
  75         }
  76     }
  77
  78     /*
  79      *  Find user's home directory.  Try the HOME environment variable first,
  80      *  the home directory field in the password file if that's not found.
  81      */
  82
  83     if ((mypath = getenv("HOME")) == NULL) {
  84         if ((pw = getpwuid(getuid())) == NULL || *pw->pw_dir == '\0')
  85             adios(NULL, "cannot determine your home directory");
  86         else
  87             mypath = pw->pw_dir;
  88     }
  89
  90     /*
  91      *  Find the user's profile.  Check for the existence of an MH environment
  92      *  variable first with non-empty contents.  Convert any relative path name
  93      *  found there to an absolute one.  Look for the profile in the user's home
  94      *  directory if the MH environment variable isn't set.
  95      */
  96
  97     if ((cp = getenv("MH")) && *cp != '\0')
  98         defpath = path(cp, TFILE);
  99     else
 100         defpath = concat(mypath, "/", mh_profile, NULL);
 101
 102     /*
 103      *  Check for the existence of the profile file.  It's an error if it exists and
 104      *  this isn't an installation check.  An installation check fails if it does not
 105      *  exist, succeeds if it does.
 106      */
 107
 108     if (stat (defpath, &st) != NOTOK) {
 109         if (check)
 110             done(0);
 111
 112         else if (autof)
 113             adios (NULL, "invocation error");
 114         else
 115             adios (NULL, "You already have an nmh profile, use an editor to modify it");
 116     }
 117     else if (check) {
 118         done(1);
 119     }
 120
 121     if (!autof && read_switch ("Do you want help? ", anoyes)) {
 122         (void)printf(
 123          "\n"
 124          "Prior to using nmh, it is necessary to have a file in your login\n"
 125          "directory (%s) named %s which contains information\n"
 126          "to direct certain nmh operations.  The only item which is required\n"
 127          "is the path to use for all nmh folder operations.  The suggested nmh\n"
 128          "path for you is %s/Mail...\n"
 129          "\n", mypath, mh_profile, mypath);
 130     }
 131
 132     cp = concat (mypath, "/", "Mail", NULL);
 133     if (stat (cp, &st) != NOTOK) {
 134         if (S_ISDIR(st.st_mode)) {
 135             cp = concat ("You already have the standard nmh directory \"",
 136                     cp, "\".\nDo you want to use it for nmh? ", NULL);
 137             if (read_switch (cp, anoyes))
 138                 pathname = "Mail";
 139             else
 140                 goto query;
 141         } else {
 142             goto query;
 143         }
 144     } else {
 145         if (autof)
 146             puts("I'm going to create the standard nmh path for you.");
 147         else
 148             cp = concat ("Do you want the standard nmh path \"",
 149                     mypath, "/", "Mail\"? ", NULL);
 150         if (autof || read_switch (cp, anoyes))
 151             pathname = "Mail";
 152         else {
 153 query:
 154             if (read_switch ("Do you want a path below your login directory? ",
 155                         anoyes)) {
 156                 printf ("What is the path?  %s/", mypath);
 157                 pathname = read_line ();
 158                 if (pathname == NULL) done (1);
 159             } else {
 160                 printf ("What is the whole path?  /");
 161                 pathname = read_line ();
 162                 if (pathname == NULL) done (1);
 163                 pathname = concat ("/", pathname, NULL);
 164             }
 165         }
 166     }
 167
 168     if (chdir (mypath) < 0) {
 169         advise (mypath, "chdir");
 170     }
 171     if (chdir (pathname) == NOTOK) {
 172         cp = concat ("\"", pathname, "\" doesn't exist; Create it? ", NULL);
 173         if (autof || read_switch (cp, anoyes))
 174             if (makedir (pathname) == 0)
 175                 adios (NULL, "unable to create %s", pathname);
 176     } else {
 177         puts("[Using existing directory]");
 178     }
 179
 180     /*
 181      * Add some initial elements to the profile/context list
 182      */
 183     NEW(np);
 184     m_defs = np;
 185     np->n_name = mh_xstrdup("Path");
 186     np->n_field = mh_xstrdup(pathname);
 187     np->n_context = 0;
 188     np->n_next = NULL;
 189
 190     /*
 191      * If there is a default profile file in the
 192      * nmh `etc' directory, then read it also.
 193      */
 194     if ((in = fopen (mh_defaults, "r"))) {
 195         readconfig (&np->n_next, in, mh_defaults, 0);
 196         fclose (in);
 197     }
 198
 199     ctxpath = getcpy (m_maildir (context = "context"));
 200
 201     /* Initialize current folder to default */
 202     context_replace (pfolder, defaultfolder);
 203     context_save ();
 204
 205     /*
 206      * Now write out the initial .mh_profile
 207      */
 208     if ((out = fopen (defpath, "w")) == NULL)
 209         adios (defpath, "unable to write");
 210     /*
 211      * The main purpose of this first line is to fool file(1).
 212      * Without it, if the first line of the profile is Path:,
 213      * file 5.19 reports its type as message/news.  With it,
 214      * it reports the type as text/plain.
 215      */
 216     fprintf (out, "MH-Profile-Version: 1.0\n");
 217     for (np = m_defs; np; np = np->n_next) {
 218         if (!np->n_context)
 219             fprintf (out, "%s: %s\n", np->n_name, np->n_field);
 220     }
 221     fclose (out);
 222
 223     puts ("\nPlease see the nmh(7) man page for an introduction to nmh.\n");
 224     print_intro (stdout, FALSE);
 225
 226     /* Initialize the saved nmh version.  The Path profile entry was added
 227        above, that's all this needs. */
 228     (void) nmh_version_changed (0);
 229
 230     done (0);
 231     return 1;
 232 }