NeoMutt  2024-04-25-100-gcb3684
Teaching an old dog new tricks
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auth.c File Reference

IMAP authenticator multiplexor. More...

#include "config.h"
#include <string.h>
#include "private.h"
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "auth.h"
+ Include dependency graph for auth.c:

Go to the source code of this file.

Data Structures

struct  ImapAuth
 IMAP authentication multiplexor. More...
 

Functions

bool imap_auth_is_valid (const char *authenticator)
 Check if string is a valid imap authentication method.
 
int imap_authenticate (struct ImapAccountData *adata)
 Authenticate to an IMAP server.
 

Variables

static const struct ImapAuth ImapAuthenticators []
 Accepted authentication methods.
 

Detailed Description

IMAP authenticator multiplexor.

Authors
  • Michael R. Elkins
  • Brandon Long
  • Brendan Cully
  • Richard Russon
  • Pietro Cerutti
  • Yousef Akbar

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, see http://www.gnu.org/licenses/.

Definition in file auth.c.

Function Documentation

◆ imap_auth_is_valid()

bool imap_auth_is_valid ( const char *  authenticator)

Check if string is a valid imap authentication method.

Parameters
authenticatorAuthenticator string to check
Return values
trueArgument is a valid auth method

Validate whether an input string is an accepted imap authentication method as defined by ImapAuthenticators.

Definition at line 95 of file auth.c.

96{
97 for (size_t i = 0; i < mutt_array_size(ImapAuthenticators); i++)
98 {
99 const struct ImapAuth *auth = &ImapAuthenticators[i];
100 if (auth->method && mutt_istr_equal(auth->method, authenticator))
101 return true;
102 }
103
104 return false;
105}
static const struct ImapAuth ImapAuthenticators[]
Accepted authentication methods.
Definition: auth.c:64
#define mutt_array_size(x)
Definition: memory.h:38
bool mutt_istr_equal(const char *a, const char *b)
Compare two strings, ignoring case.
Definition: string.c:672
IMAP authentication multiplexor.
Definition: auth.c:46
const char * method
Name of authentication method supported, NULL means variable.
Definition: auth.c:57
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◆ imap_authenticate()

int imap_authenticate ( struct ImapAccountData adata)

Authenticate to an IMAP server.

Parameters
adataImap Account data
Return values
enumImapAuthRes, e.g. IMAP_AUTH_SUCCESS

Attempt to authenticate using either user-specified authentication method if specified, or any.

Definition at line 115 of file auth.c.

116{
117 int rc = IMAP_AUTH_FAILURE;
118
119 const struct Slist *c_imap_authenticators = cs_subset_slist(NeoMutt->sub, "imap_authenticators");
120 if (c_imap_authenticators && (c_imap_authenticators->count > 0))
121 {
122 mutt_debug(LL_DEBUG2, "Trying user-defined imap_authenticators\n");
123
124 /* Try user-specified list of authentication methods */
125 struct ListNode *np = NULL;
126 STAILQ_FOREACH(np, &c_imap_authenticators->head, entries)
127 {
128 mutt_debug(LL_DEBUG2, "Trying method %s\n", np->data);
129
130 for (size_t i = 0; i < mutt_array_size(ImapAuthenticators); i++)
131 {
132 const struct ImapAuth *auth = &ImapAuthenticators[i];
133 if (!auth->method || mutt_istr_equal(auth->method, np->data))
134 {
135 rc = auth->authenticate(adata, np->data);
136 if (rc == IMAP_AUTH_SUCCESS)
137 {
138 return rc;
139 }
140 }
141 }
142 }
143 }
144 else
145 {
146 /* Fall back to default: any authenticator */
147 mutt_debug(LL_DEBUG2, "Trying pre-defined imap_authenticators\n");
148
149 for (size_t i = 0; i < mutt_array_size(ImapAuthenticators); i++)
150 {
151 rc = ImapAuthenticators[i].authenticate(adata, NULL);
152 if (rc == IMAP_AUTH_SUCCESS)
153 return rc;
154 }
155 }
156
157 mutt_error(_("No authenticators available or wrong credentials"));
158 return rc;
159}
@ IMAP_AUTH_FAILURE
Authentication failed.
Definition: auth.h:41
@ IMAP_AUTH_SUCCESS
Authentication successful.
Definition: auth.h:40
const struct Slist * cs_subset_slist(const struct ConfigSubset *sub, const char *name)
Get a string-list config item by name.
Definition: helpers.c:242
#define mutt_error(...)
Definition: logging2.h:92
#define mutt_debug(LEVEL,...)
Definition: logging2.h:89
@ LL_DEBUG2
Log at debug level 2.
Definition: logging2.h:44
#define _(a)
Definition: message.h:28
#define STAILQ_FOREACH(var, head, field)
Definition: queue.h:352
enum ImapAuthRes(* authenticate)(struct ImapAccountData *adata, const char *method)
Definition: auth.c:55
A List node for strings.
Definition: list.h:37
char * data
String.
Definition: list.h:38
Container for Accounts, Notifications.
Definition: neomutt.h:42
struct ConfigSubset * sub
Inherited config items.
Definition: neomutt.h:46
String list.
Definition: slist.h:37
struct ListHead head
List containing values.
Definition: slist.h:38
size_t count
Number of values in list.
Definition: slist.h:39
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Variable Documentation

◆ ImapAuthenticators

const struct ImapAuth ImapAuthenticators[]
static
Initial value:
= {
{ imap_auth_oauth, "oauthbearer" },
{ imap_auth_xoauth2, "xoauth2" },
{ imap_auth_plain, "plain" },
{ imap_auth_anon, "anonymous" },
{ imap_auth_gss, "gssapi" },
{ imap_auth_cram_md5, "cram-md5" },
{ imap_auth_login, "login" },
}
enum ImapAuthRes imap_auth_gss(struct ImapAccountData *adata, const char *method)
GSS Authentication support - Implements ImapAuth::authenticate() -.
Definition: auth_gss.c:106
enum ImapAuthRes imap_auth_login(struct ImapAccountData *adata, const char *method)
Plain LOGIN support - Implements ImapAuth::authenticate() -.
Definition: auth_login.c:45
enum ImapAuthRes imap_auth_cram_md5(struct ImapAccountData *adata, const char *method)
Authenticate using CRAM-MD5 - Implements ImapAuth::authenticate() -.
Definition: auth_cram.c:97
enum ImapAuthRes imap_auth_xoauth2(struct ImapAccountData *adata, const char *method)
Authenticate an IMAP connection using XOAUTH2 - Implements ImapAuth::authenticate() -.
Definition: auth_oauth.c:119
enum ImapAuthRes imap_auth_plain(struct ImapAccountData *adata, const char *method)
SASL PLAIN support - Implements ImapAuth::authenticate() -.
Definition: auth_plain.c:42
enum ImapAuthRes imap_auth_anon(struct ImapAccountData *adata, const char *method)
Authenticate anonymously - Implements ImapAuth::authenticate() -.
Definition: auth_anon.c:42
enum ImapAuthRes imap_auth_oauth(struct ImapAccountData *adata, const char *method)
Authenticate an IMAP connection using OAUTHBEARER - Implements ImapAuth::authenticate() -.
Definition: auth_oauth.c:111

Accepted authentication methods.

Definition at line 64 of file auth.c.