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sasl: Moved ntlm authentication message handling from smtp.c

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Moved the ntlm message creation and decoding from smtp.c into the sasl
module to allow for use by other modules such as pop3.
This commit is contained in:
Steve Holme 2012-06-02 11:07:58 +01:00
parent 2df6e6d9f8
commit d9ca9e9869
3 changed files with 131 additions and 31 deletions
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92
lib/curl_sasl.c
View File

@ -28,6 +28,7 @@
#include "urldata.h"
#include "curl_base64.h"
#include "curl_ntlm_msgs.h"
#include "curl_sasl.h"
/* The last #include file should be: */
@ -113,3 +114,94 @@ CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
}
#ifdef USE_NTLM
/*
* Curl_sasl_create_ntlm_type1_message()
*
* This is used to generate an already encoded NTLM type-1 message ready for
* sending to the recipient.
*
* Note: This is a simple wrapper of the NTLM function which means that any
* SASL based protocols don't have to include the NTLM functions directly.
*
* Parameters:
*
* userp [in] - The user name in the format User or Domain\User.
* passdwp [in] - The user's password.
* ntlm [in/out] - The ntlm data struct being used and modified.
* outptr [in/out] - The address where a pointer to newly allocated memory
* holding the result will be stored upon completion.
* outlen [out] - The length of the output message.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_sasl_create_ntlm_type1_message(const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr, size_t *outlen)
{
return Curl_ntlm_create_type1_message(userp, passwdp, ntlm, outptr,
outlen);
}
/*
* Curl_sasl_decode_ntlm_type2_message()
*
* This is used to decode a ntlm type-2 message received from a recipient and
* generate the already encoded NTLM type-3 message ready for sending back.
*
* Parameters:
*
* data [in] - Pointer to session handle.
* header [in] - Pointer to the input buffer.
* userp [in] - The user name in the format User or Domain\User.
* passdwp [in] - The user's password.
* ntlm [in/out] - The ntlm data struct being used and modified.
* outptr [in/out] - The address where a pointer to newly allocated memory
* holding the result will be stored upon completion.
* outlen [out] - The length of the output message.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_sasl_decode_ntlm_type2_message(struct SessionHandle *data,
const char *header,
const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr, size_t *outlen)
{
CURLcode result = Curl_ntlm_decode_type2_message(data, header, ntlm);
if(!result)
result = Curl_ntlm_create_type3_message(data, userp, passwdp, ntlm,
outptr, outlen);
return result;
}
#endif /* USE_NTLM */
/*
* Curl_sasl_cleanup()
*
* This is used to cleanup any libraries or curl modules used by the sasl
* functions.
*
* Parameters:
*
* conn [in] - Pointer to the connection data.
* authused [in] - The authentication mechanism used.
*/
void Curl_sasl_cleanup(struct connectdata *conn, unsigned int authused)
{
#ifdef USE_NTLM
/* Cleanup the ntlm structure */
if(authused == SASL_AUTH_NTLM) {
Curl_ntlm_sspi_cleanup(&conn->ntlm);
}
#else
/* Reserved for future use */
(void)conn;
(void)authused;
#endif
}

23
lib/curl_sasl.h
View File

@ -45,4 +45,27 @@ CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
const char* valuep, char **outptr,
size_t *outlen);
#ifdef USE_NTLM
/* This is used to generate a base64 encoded NTLM type-1 message */
CURLcode Curl_sasl_create_ntlm_type1_message(const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr,
size_t *outlen);
/* This is used to decode an incoming NTLM type-2 message and generate a
base64 encoded type-3 response */
CURLcode Curl_sasl_decode_ntlm_type2_message(struct SessionHandle *data,
const char *type2msg,
const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr, size_t *outlen);
#endif /* USE_NTLM */
/* This is used to cleanup any libraries or curl modules used by the sasl
functions */
void Curl_sasl_cleanup(struct connectdata *conn, unsigned int authused);
#endif /* HEADER_CURL_SASL_H */

47
lib/smtp.c
View File

@ -87,7 +87,6 @@
#include "curl_md5.h"
#include "curl_hmac.h"
#include "curl_gethostname.h"
#include "curl_ntlm_msgs.h"
#include "curl_sasl.h"
#include "warnless.h"
@ -383,15 +382,6 @@ static CURLcode smtp_state_helo(struct connectdata *conn)
return CURLE_OK;
}
#ifdef USE_NTLM
static CURLcode smtp_auth_ntlm_type1_message(struct connectdata *conn,
char **outptr, size_t *outlen)
{
return Curl_ntlm_create_type1_message(conn->user, conn->passwd,
&conn->ntlm, outptr, outlen);
}
#endif
static CURLcode smtp_authenticate(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -431,7 +421,8 @@ static CURLcode smtp_authenticate(struct connectdata *conn)
state1 = SMTP_AUTHNTLM;
state2 = SMTP_AUTHNTLM_TYPE2MSG;
smtpc->authused = SASL_AUTH_NTLM;
result = smtp_auth_ntlm_type1_message(conn, &initresp, &len);
result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
&conn->ntlm, &initresp, &len);
}
else
#endif
@ -1039,7 +1030,8 @@ static CURLcode smtp_state_auth_ntlm_resp(struct connectdata *conn,
result = CURLE_LOGIN_DENIED;
}
else {
result = smtp_auth_ntlm_type1_message(conn, &type1msg, &len);
result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
&conn->ntlm, &type1msg, &len);
if(!result) {
if(type1msg) {
@ -1073,22 +1065,20 @@ static CURLcode smtp_state_auth_ntlm_type2msg_resp(struct connectdata *conn,
result = CURLE_LOGIN_DENIED;
}
else {
result = Curl_ntlm_decode_type2_message(data, data->state.buffer + 4,
&conn->ntlm);
result = Curl_sasl_decode_ntlm_type2_message(data,
data->state.buffer + 4,
conn->user, conn->passwd,
&conn->ntlm,
&type3msg, &len);
if(!result) {
result = Curl_ntlm_create_type3_message(conn->data, conn->user,
conn->passwd, &conn->ntlm,
&type3msg, &len);
if(!result) {
if(type3msg) {
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", type3msg);
if(type3msg) {
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", type3msg);
if(!result)
state(conn, SMTP_AUTH);
}
Curl_safefree(type3msg);
if(!result)
state(conn, SMTP_AUTH);
}
Curl_safefree(type3msg);
}
}
@ -1763,12 +1753,7 @@ static CURLcode smtp_disconnect(struct connectdata *conn,
Curl_pp_disconnect(&smtpc->pp);
#ifdef USE_NTLM
/* Cleanup the ntlm structure */
if(smtpc->authused == SASL_AUTH_NTLM) {
Curl_ntlm_sspi_cleanup(&conn->ntlm);
}
#endif
Curl_sasl_cleanup(conn, smtpc->authused);
/* This won't already be freed in some error cases */
Curl_safefree(smtpc->domain);