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/* Generic SASL plugin utility functions
* Rob Siemborski
*/
/*
* Copyright (c) 1998-2016 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any other legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _PLUGIN_COMMON_H_
#define _PLUGIN_COMMON_H_
#include <config.h>
#ifdef WIN32
#include <winsock2.h>
#else
#ifndef macintosh
#include <arpa/inet.h>
#endif /* macintosh */
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#endif /* WIN32 */
#include <sasl/sasl.h>
#include <sasl/saslplug.h>
#include <sasl/saslutil.h>
#ifdef WIN32
#define PLUG_API __declspec(dllexport)
#else
#define PLUG_API extern
#endif
#define SASL_CLIENT_PLUG_INIT(x) \
extern sasl_client_plug_init_t x##_client_plug_init; \
PLUG_API int sasl_client_plug_init(const sasl_utils_t *utils, int maxversion, int *out_version, sasl_client_plug_t **pluglist, int *plugcount) \
{ \
return x##_client_plug_init(utils, maxversion, out_version, pluglist, plugcount); \
}
#define SASL_SERVER_PLUG_INIT(x) \
extern sasl_server_plug_init_t x##_server_plug_init; \
PLUG_API int sasl_server_plug_init(const sasl_utils_t *utils, int maxversion, int *out_version, sasl_server_plug_t **pluglist, int *plugcount) \
{ \
return x##_server_plug_init(utils, maxversion, out_version, pluglist, plugcount); \
}
#define SASL_AUXPROP_PLUG_INIT(x) \
extern sasl_auxprop_init_t x##_auxprop_plug_init; \
PLUG_API int sasl_auxprop_plug_init(const sasl_utils_t *utils, int maxversion, int *out_version, sasl_auxprop_plug_t **plug, const char *plugname) \
{ \
return x##_auxprop_plug_init(utils, maxversion, out_version, plug, plugname); \
}
#define SASL_CANONUSER_PLUG_INIT(x) \
extern sasl_canonuser_init_t x##_canonuser_plug_init; \
PLUG_API int sasl_canonuser_init(const sasl_utils_t *utils, int maxversion, int *out_version, sasl_canonuser_plug_t **plug, const char *plugname) \
{ \
return x##_canonuser_plug_init(utils, maxversion, out_version, plug, plugname); \
}
/* note: msg cannot include additional variables, so if you want to
* do a printf-format string, then you need to call seterror yourself */
#define SETERROR(utils, msg) (utils)->seterror((utils)->conn, 0, (msg))
#ifndef MEMERROR
#define MEMERROR(utils) (utils)->seterror((utils)->conn, 0, "Out of Memory in " __FILE__ " near line %d", __LINE__)
#endif
#ifndef PARAMERROR
#define PARAMERROR(utils) (utils)->seterror((utils)->conn, 0, "Parameter Error in " __FILE__ " near line %d", __LINE__)
#endif
#ifndef SASLINT_H
typedef struct buffer_info {
char *data;
unsigned curlen; /* Current length of data in buffer */
unsigned reallen; /* total length of buffer (>= curlen) */
} buffer_info_t;
#ifndef HAVE_GETHOSTNAME
#ifdef sun
/* gotta define gethostname ourselves on suns */
extern int gethostname(char *, int);
#endif
#endif /* HAVE_GETHOSTNAME */
#endif /* SASLINT_H */
#ifdef __cplusplus
extern "C" {
#endif
int _plug_ipfromstring(const sasl_utils_t *utils, const char *addr, struct sockaddr *out, socklen_t outlen);
int _plug_iovec_to_buf(const sasl_utils_t *utils, const struct iovec *vec, unsigned numiov, buffer_info_t **output);
int _plug_buf_alloc(const sasl_utils_t *utils, char **rwbuf, unsigned *curlen, unsigned newlen);
int _plug_strdup(const sasl_utils_t *utils, const char *in, char **out, int *outlen);
void _plug_free_string(const sasl_utils_t *utils, char **str);
void _plug_free_secret(const sasl_utils_t *utils, sasl_secret_t **secret);
#define _plug_get_userid(utils, result, prompt_need) _plug_get_simple(utils, SASL_CB_USER, 0, result, prompt_need)
#define _plug_get_authid(utils, result, prompt_need) _plug_get_simple(utils, SASL_CB_AUTHNAME, 1, result, prompt_need)
int _plug_get_simple(const sasl_utils_t *utils, unsigned int id, int required, const char **result, sasl_interact_t **prompt_need);
int _plug_get_password(const sasl_utils_t *utils, sasl_secret_t **secret, unsigned int *iscopy, sasl_interact_t **prompt_need);
int _plug_challenge_prompt(const sasl_utils_t *utils,
unsigned int id,
const char *challenge,
const char *promptstr,
const char **result,
sasl_interact_t **prompt_need);
int _plug_get_realm(const sasl_utils_t *utils, const char **availrealms, const char **realm, sasl_interact_t **prompt_need);
int _plug_make_prompts(const sasl_utils_t *utils,
sasl_interact_t **prompts_res,
const char *user_prompt,
const char *user_def,
const char *auth_prompt,
const char *auth_def,
const char *pass_prompt,
const char *pass_def,
const char *echo_chal,
const char *echo_prompt,
const char *echo_def,
const char *realm_chal,
const char *realm_prompt,
const char *realm_def);
typedef struct decode_context {
const sasl_utils_t *utils;
unsigned int needsize; /* How much of the 4-byte size do we need? */
char sizebuf[4]; /* Buffer to accumulate the 4-byte size */
unsigned int size; /* Absolute size of the encoded packet */
char *buffer; /* Buffer to accumulate an encoded packet */
unsigned int cursize; /* Amount of packet data in the buffer */
unsigned int in_maxbuf; /* Maximum allowed size of an incoming encoded packet */
} decode_context_t;
void _plug_decode_init(decode_context_t *text, const sasl_utils_t *utils, unsigned int in_maxbuf);
int _plug_decode(decode_context_t *text,
const char *input,
unsigned inputlen,
char **output,
unsigned *outputsize,
unsigned *outputlen,
int (*decode_pkt)(void *rock, const char *input, unsigned inputlen, char **output, unsigned *outputlen),
void *rock);
void _plug_decode_free(decode_context_t *text);
int _plug_parseuser(const sasl_utils_t *utils, char **user, char **realm, const char *user_realm, const char *serverFQDN, const char *input);
int _plug_make_fulluser(const sasl_utils_t *utils, char **fulluser, const char *useronly, const char *realm);
char *_plug_get_error_message(const sasl_utils_t *utils,
#ifdef WIN32
DWORD error
#else
int error
#endif
);
void _plug_snprintf_os_info(char *osbuf, int osbuf_len);
#ifdef __cplusplus
}
#endif
#endif /* _PLUGIN_COMMON_H_ */
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