summaryrefslogtreecommitdiffabout
path: root/ident/provider.c
blob: 8b9f076598acd046449fe86bdf50119bb2730ce2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* This file is part of GNU Pies.
   Copyright (C) 2015-2016 Sergey Poznyakoff

   GNU Pies 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 3, or (at your option)
   any later version.

   GNU Pies 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 GNU Pies.  If not, see <http://www.gnu.org/licenses/>. */

#include "ident.h"

struct grecs_list *identity_provider_list;

static struct grecs_symtab *idmech_symtab;

static int
idmech_copy (void *a, void *b)
{
  pies_identity_mechanism_t ma = a;
  pies_identity_mechanism_t mb = b;

  *ma = *mb;
  ma->name = grecs_strdup (mb->name);
  return 0;
}

int
pies_identity_mechanism_register (pies_identity_mechanism_t mech)
{
  int install;
	
  if (!idmech_symtab)
    {
      idmech_symtab = grecs_symtab_create (sizeof (*mech),
					   NULL,
					   NULL,
					   idmech_copy,
					   NULL,
					   NULL);
      if (!idmech_symtab)
	grecs_alloc_die ();
    }

  install = 1;
  if (!grecs_symtab_lookup_or_install (idmech_symtab, mech, &install))
    abort ();
  return !install;
}

pies_identity_mechanism_t
pies_identity_mechanism_lookup (char const *name)
{
  struct pies_identity_mechanism key;
  if (!idmech_symtab)
    return NULL;
  key.name = name;
  return grecs_symtab_lookup_or_install (idmech_symtab, &key, NULL);
}
  
static int
idmech_help (void *data, void *unused)
{
  pies_identity_mechanism_t p = data;
	
  if (p->confhelp)
    p->confhelp ();
  return 0;
}

void
pies_config_identity_mechanisms_help ()
{
  grecs_symtab_enumerate (idmech_symtab, idmech_help, NULL);
}

static int
get_string_node (struct grecs_node *node, const char *name,
		 struct grecs_node **pret)
{
  struct grecs_node *p = grecs_find_node (node->down, name);
	
  if (!p)
    {
      grecs_error (&node->locus, 0,
		   "no \"%s\" statement found", name);
      return 1;
    }

  if (p->type != grecs_node_stmt)
    {
      grecs_error (&p->locus, 0, "must be simple statement");
      return 1;
    }
  
  if (p->v.value->type != GRECS_TYPE_STRING)
    {
      grecs_error (&p->locus, 0, "must be scalar");
      return 1;
    }

  *pret = p;
  return 0;
}

int
pies_config_provider (struct grecs_node *node)
{
  char const *name;
  pies_identity_mechanism_t mp;
  struct pies_identity_provider *prov;
  struct grecs_node *p;
  
  if (node->v.value->type != GRECS_TYPE_STRING)
    {
      grecs_error (&node->locus, 0, "value must be scalar");
      return 1;
    }

  name = node->v.value->v.string;

  if (get_string_node (node, "type", &p))
    return 1;

  mp = pies_identity_mechanism_lookup (p->v.value->v.string);
  if (!mp)
    {
      grecs_error (&p->locus, 0, "no such mechanism");
      return 1;
    }

  prov = grecs_calloc (1, sizeof (*prov));
  prov->name = grecs_strdup (name);
  prov->mech = mp;
  prov->locus = node->locus;

  if (mp->configure && mp->configure (node, prov))
    {
      grecs_error (&node->locus, 0, "provider configration failed");
      //FIXME: memory leak
      return 1;
    }
  
  if (!identity_provider_list)
    identity_provider_list = grecs_list_create ();
  grecs_list_append (identity_provider_list, prov);
  
  return 0;
}
  
char const *
pies_identity_provider_name (pies_identity_provider_t p)
{
  return p->name;
}

Return to:

Send suggestions and report system problems to the System administrator.