userinfo/edituser implementation

[disorder] / lib / rights.c

diff --git a/lib/rights.c b/lib/rights.c
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+++ b/lib/rights.c
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+/*
+ * This file is part of DisOrder
+ * Copyright (C) 2007 Richard Kettlewell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+/** @file lib/rights.c
+ * @brief User rights
+ */
+
+#include <config.h>
+#include "types.h"
+
+#include <string.h>
+
+#include "mem.h"
+#include "log.h"
+#include "configuration.h"
+#include "rights.h"
+#include "vector.h"
+
+static const struct {
+  rights_type bit;
+  const char *name;
+} rights_names[] = {
+  { RIGHT_READ, "read" },
+  { RIGHT_PLAY, "play" },
+  { RIGHT_MOVE_ANY, "move any" },
+  { RIGHT_MOVE_MINE, "move mine" },
+  { RIGHT_MOVE_RANDOM, "move random" },
+  { RIGHT_REMOVE_ANY, "remove any" },
+  { RIGHT_REMOVE_MINE, "remove mine" },
+  { RIGHT_REMOVE_RANDOM, "remove random" },
+  { RIGHT_SCRATCH_ANY, "scratch any" },
+  { RIGHT_SCRATCH_MINE, "scratch mine" },
+  { RIGHT_SCRATCH_RANDOM, "scratch random" },
+  { RIGHT_VOLUME, "volume" },
+  { RIGHT_ADMIN, "admin" },
+  { RIGHT_RESCAN, "rescan" },
+  { RIGHT_REGISTER, "register" },
+  { RIGHT_USERINFO, "userinfo" },
+  { RIGHT_PREFS, "prefs" },
+  { RIGHT_GLOBAL_PREFS, "global prefs" }
+};
+#define NRIGHTS (sizeof rights_names / sizeof *rights_names)
+
+/** @brief Convert a rights word to a string */
+char *rights_string(rights_type r) {
+  struct dynstr d[1];
+  size_t n;
+
+  dynstr_init(d);
+  for(n = 0; n < NRIGHTS; ++n) {
+    if(r & rights_names[n].bit) {
+      if(d->nvec)
+        dynstr_append(d, ',');
+      dynstr_append_string(d, rights_names[n].name);
+    }
+  }
+  dynstr_terminate(d);
+  return d->vec;
+}
+
+/** @brief Compute default rights for a new user
+ * @return Default rights value
+ */
+rights_type default_rights(void) {
+  /* TODO get rights from config */
+  rights_type r = RIGHTS__MASK & ~(RIGHT_ADMIN|RIGHT_REGISTER
+                                   |RIGHT_MOVE__MASK
+                                   |RIGHT_SCRATCH__MASK
+                                   |RIGHT_REMOVE__MASK);
+  if(config->restrictions & RESTRICT_SCRATCH)
+    r |= RIGHT_SCRATCH_MINE|RIGHT_SCRATCH_RANDOM;
+  else
+    r |= RIGHT_SCRATCH_ANY;
+  if(!(config->restrictions & RESTRICT_MOVE))
+    r |= RIGHT_MOVE_ANY;
+  if(config->restrictions & RESTRICT_REMOVE)
+    r |= RIGHT_REMOVE_MINE;
+  else
+    r |= RIGHT_REMOVE_ANY;
+  return r;
+}
+
+/** @brief Parse a rights list
+ * @param s Rights list in string form
+ * @param rp Where to store rights, or NULL to just validate
+ * @return 0 on success, non-0 if @p s is not valid
+ */
+int parse_rights(const char *s, rights_type *rp) {
+  rights_type r = 0;
+  const char *t;
+  size_t n, l;
+
+  if(!*s) {
+    /* You can't have no rights */
+    error(0, "empty rights string");
+    return -1;
+  }
+  while(*s) {
+    t = strchr(s, ',');
+    if(!t)
+      t = s + strlen(s);
+    l = (size_t)(t - s);
+    if(l == 3 && !strncmp(s, "all", 3))
+      r = RIGHTS__MASK;
+    else {
+      for(n = 0; n < NRIGHTS; ++n)
+       if(strlen(rights_names[n].name) == l
+          && !strncmp(rights_names[n].name, s, l))
+         break;
+      if(n >= NRIGHTS) {
+       error(0, "unknown user right '%.*s'", (int)l, s);
+       return -1;
+      }
+      r |= rights_names[n].bit;
+    }
+    s = t;
+    if(*s == ',')
+      ++s;
+  }
+  if(rp)
+    *rp = r;
+  return 0;
+}
+
+/*
+Local Variables:
+c-basic-offset:2
+comment-column:40
+fill-column:79
+indent-tabs-mode:nil
+End:
+*/