gsasl  2.2.1
listmech.c
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1 /* listmech.c --- List active client and server mechanisms.
2  * Copyright (C) 2002-2024 Simon Josefsson
3  *
4  * This file is part of GNU SASL Library.
5  *
6  * GNU SASL Library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public License
8  * as published by the Free Software Foundation; either version 2.1 of
9  * the License, or (at your option) any later version.
10  *
11  * GNU SASL Library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License License along with GNU SASL Library; if not, write to the
18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  *
21  */
22 
23 #include <config.h>
24 #include "internal.h"
25 
26 static int
27 _gsasl_listmech (Gsasl *ctx,
28  Gsasl_mechanism *mechs,
29  size_t n_mechs, char **out, int clientp)
30 {
31  Gsasl_session *sctx;
32  char *list;
33  size_t i;
34  int rc;
35 
36  list = calloc (n_mechs + 1, GSASL_MAX_MECHANISM_SIZE + 1);
37  if (!list)
38  return GSASL_MALLOC_ERROR;
39 
40  for (i = 0; i < n_mechs; i++)
41  {
42  if (clientp)
43  rc = gsasl_client_start (ctx, mechs[i].name, &sctx);
44  else
45  rc = gsasl_server_start (ctx, mechs[i].name, &sctx);
46 
47  if (rc == GSASL_OK)
48  {
49  gsasl_finish (sctx);
50 
51  strcat (list, mechs[i].name);
52  if (i < n_mechs - 1)
53  strcat (list, " ");
54  }
55  }
56 
57  *out = list;
58 
59  return GSASL_OK;
60 }
61 
74 int
75 gsasl_client_mechlist (Gsasl *ctx, char **out)
76 {
77  return _gsasl_listmech (ctx, ctx->client_mechs, ctx->n_client_mechs,
78  out, 1);
79 }
80 
93 int
94 gsasl_server_mechlist (Gsasl *ctx, char **out)
95 {
96  return _gsasl_listmech (ctx, ctx->server_mechs, ctx->n_server_mechs,
97  out, 0);
98 }
const char * name
Definition: error.c:38
int rc
Definition: error.c:37
@ GSASL_OK
Definition: gsasl.h:129
@ GSASL_MALLOC_ERROR
Definition: gsasl.h:133
_GSASL_API int gsasl_server_start(Gsasl *ctx, const char *mech, Gsasl_session **sctx)
Definition: xstart.c:138
_GSASL_API int gsasl_client_start(Gsasl *ctx, const char *mech, Gsasl_session **sctx)
Definition: xstart.c:120
_GSASL_API void gsasl_finish(Gsasl_session *sctx)
Definition: xfinish.c:34
@ GSASL_MAX_MECHANISM_SIZE
Definition: gsasl.h:301
int gsasl_client_mechlist(Gsasl *ctx, char **out)
Definition: listmech.c:75
int gsasl_server_mechlist(Gsasl *ctx, char **out)
Definition: listmech.c:94
Definition: internal.h:37
size_t n_client_mechs
Definition: internal.h:38
Gsasl_mechanism * server_mechs
Definition: internal.h:41
Gsasl_mechanism * client_mechs
Definition: internal.h:39
size_t n_server_mechs
Definition: internal.h:40