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ROS3: (feature) Temporary security credentials (#3030)
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- Implemented support for AWS temporary security credentials.
  For this kind of credentials also a session/security token
  should be included in the request by adding the
  x-amz-security-token header.

Co-authored-by: Larry Knox <lrknox@hdfgroup.org>
Co-authored-by: Jordan Henderson <jhenderson@hdfgroup.org>
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
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@lrknox @jhendersonHDF @github-actions
4 people authored Jul 14, 2023
1 parent f21cd48 commit 305ac88
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Showing 13 changed files with 769 additions and 272 deletions.
9 changes: 9 additions & 0 deletions release_docs/RELEASE.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,15 @@ New Features

Library:
--------
- Implemented support for temporary security credentials for the Read-Only
S3 (ROS3) file driver.

When using temporary security credentials, one also needs to specify a
session/security token next to the access key id and secret access key.
This token can be specified by the new API function H5Pset_fapl_ros3_token().
The API function H5Pget_fapl_ros3_token() can be used to retrieve
the currently set token.

- Added a Subfiling VFD configuration file prefix environment variable

The Subfiling VFD now checks for values set in a new environment
Expand Down
283 changes: 280 additions & 3 deletions src/H5FDros3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,10 @@
*/
static hid_t H5FD_ROS3_g = 0;

/* Session/security token property name
*/
#define ROS3_TOKEN_PROP_NAME "ros3_token_prop"

#if ROS3_STATS

/* arbitrarily large value, such that any reasonable size read will be "less"
Expand Down Expand Up @@ -225,6 +229,11 @@ static herr_t H5FD__ros3_truncate(H5FD_t *_file, hid_t dxpl_id, hbool_t closing

static herr_t H5FD__ros3_validate_config(const H5FD_ros3_fapl_t *fa);

static herr_t H5FD__ros3_str_token_copy(const char *name, size_t size, void *_value);
static int H5FD__ros3_str_token_cmp(const void *_value1, const void *_value2, size_t size);
static herr_t H5FD__ros3_str_token_close(const char *name, size_t size, void *_value);
static herr_t H5FD__ros3_str_token_delete(hid_t prop_id, const char *name, size_t size, void *_value);

static const H5FD_class_t H5FD_ros3_g = {
H5FD_CLASS_VERSION, /* struct version */
H5FD_ROS3_VALUE, /* value */
Expand Down Expand Up @@ -566,6 +575,257 @@ H5FD__ros3_fapl_free(void *_fa)
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5FD__ros3_fapl_free() */

/*-------------------------------------------------------------------------
* Function: H5Pget_fapl_ros3_token
*
* Purpose: Returns session/security token of the ros3 file access
* property list though the function arguments.
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
herr_t
H5Pget_fapl_ros3_token(hid_t fapl_id, size_t size, char *token_dst /*out*/)
{
H5P_genplist_t *plist = NULL;
char *token_src;
htri_t token_exists;
size_t tokenlen = 0;
herr_t ret_value = SUCCEED;

FUNC_ENTER_API(FAIL)
H5TRACE3("e", "izx", fapl_id, size, token_dst);

#if ROS3_DEBUG
HDfprintf(stdout, "H5Pget_fapl_ros3_token() called.\n");
#endif

if (size == 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "size cannot be zero.")
if (token_dst == NULL)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "token_dst is NULL")

if (NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a file access property list")
if (H5FD_ROS3 != H5P_peek_driver(plist))
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "incorrect VFL driver")
if ((token_exists = H5P_exist_plist(plist, ROS3_TOKEN_PROP_NAME)) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "failed to check if property token exists in plist")
if (token_exists) {
if (H5P_get(plist, ROS3_TOKEN_PROP_NAME, &token_src) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "unable to get token value")
}

/* Copy the token data out */
tokenlen = HDstrlen(token_src);
if (size <= tokenlen) {
tokenlen = size - 1;
}
H5MM_memcpy(token_dst, token_src, sizeof(char) * tokenlen);
token_dst[tokenlen] = '\0';

done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pget_fapl_ros3_token() */

/*-------------------------------------------------------------------------
* Function: H5FD__ros3_str_token_copy()
*
* Purpose: Create a copy of the token string.
*
* Return: SUCCEED/FAIL
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ros3_str_token_copy(const char H5_ATTR_UNUSED *name, size_t H5_ATTR_UNUSED size, void *_value)
{
char **value = (char **)_value;
herr_t ret_value = SUCCEED;

FUNC_ENTER_PACKAGE

#if ROS3_DEBUG
HDfprintf(stdout, "H5FD__ros3_str_token_copy() called.\n");
#endif

if (*value)
if (NULL == (*value = HDstrdup(*value)))
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't copy string property token")

done:
FUNC_LEAVE_NOAPI(ret_value);
} /* H5FD__ros3_str_token_copy() */

/*-------------------------------------------------------------------------
* Function: H5FD__ros3_str_token_cmp()
*
* Purpose: Compares two token strings with each other.
*
* Return:
* - Equivalent: 0
* - Not Equivalent: non-zero value
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
static int
H5FD__ros3_str_token_cmp(const void *_value1, const void *_value2, size_t H5_ATTR_UNUSED size)
{
char *const *value1 = (char *const *)_value1;
char *const *value2 = (char *const *)_value2;
int ret_value = SUCCEED;

FUNC_ENTER_PACKAGE_NOERR

if (*value1) {
if (*value2)
ret_value = HDstrcmp(*value1, *value2);
else
ret_value = 1;
}
else {
if (*value2)
ret_value = -1;
else
ret_value = 0;
}

FUNC_LEAVE_NOAPI(ret_value)
} /* H5FD__ros3_str_token_cmp */

/*-------------------------------------------------------------------------
* Function: H5FD__ros3_str_token_close()
*
* Purpose: Closes/frees the memory associated to the token string.
* Currently, it is an empty implementation since there no
* additional treatment needed for this property.
*
* Return: SUCCEED/FAIL
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ros3_str_token_close(const char H5_ATTR_UNUSED *name, size_t H5_ATTR_UNUSED size, void *_value)
{
char **value = (char **)_value;
herr_t ret_value = SUCCEED;

FUNC_ENTER_PACKAGE_NOERR

if (*value)
free(*value);

FUNC_LEAVE_NOAPI(ret_value)
} /* H5FD__ros3_str_token_close */

/*-------------------------------------------------------------------------
* Function: H5FD__ros3_str_token_delete()
*
* Purpose: Deletes the property token from the property list and frees
* the memory associated to the token string.
* Currently, it is an empty implementation since there no
* additional treatment needed for this property.
*
* Return: SUCCEED/FAIL
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ros3_str_token_delete(hid_t H5_ATTR_UNUSED prop_id, const char H5_ATTR_UNUSED *name,
size_t H5_ATTR_UNUSED size, void *_value)
{
char **value = (char **)_value;
herr_t ret_value = SUCCEED;

FUNC_ENTER_PACKAGE_NOERR

if (*value)
free(*value);

FUNC_LEAVE_NOAPI(ret_value)
} /* H5FD__ros3_str_token_delete */

/*-------------------------------------------------------------------------
* Function: H5Pset_fapl_ros3_token()
*
* Purpose: Modify the file access property list to use the H5FD_ROS3
* driver defined in this source file by adding or
* modifying the session/security token property.
*
* Return: SUCCEED/FAIL
*
* Programmer: Jan-Willem Blokland
* 2023-05-26
*
*-------------------------------------------------------------------------
*/
herr_t
H5Pset_fapl_ros3_token(hid_t fapl_id, const char *token)
{
H5P_genplist_t *plist = NULL;
char *token_src;
htri_t token_exists;
herr_t ret_value = SUCCEED;

FUNC_ENTER_API(FAIL)
H5TRACE2("e", "i*s", fapl_id, token);

#if ROS3_DEBUG
HDfprintf(stdout, "H5Pset_fapl_ros3_token() called.\n");
#endif

if (fapl_id == H5P_DEFAULT)
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "can't set values in default property list")
if (NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a file access property list")
if (H5FD_ROS3 != H5P_peek_driver(plist))
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "incorrect VFL driver")
if (HDstrlen(token) > H5FD_ROS3_MAX_SECRET_TOK_LEN)
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL,
"specified token exceeds the internally specified maximum string length")

if ((token_exists = H5P_exist_plist(plist, ROS3_TOKEN_PROP_NAME)) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "failed to check if property token exists in plist")

if (token_exists) {
if (H5P_get(plist, ROS3_TOKEN_PROP_NAME, &token_src) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "unable to get token value")

memcpy(token_src, token, HDstrlen(token) + 1);
}
else {
token_src = (char *)malloc(sizeof(char) * (H5FD_ROS3_MAX_SECRET_TOK_LEN + 1));
if (token_src == NULL)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "cannot make space for token_src variable.");
memcpy(token_src, token, HDstrlen(token) + 1);
if (H5P_insert(plist, ROS3_TOKEN_PROP_NAME, sizeof(char *), &token_src, NULL, NULL, NULL, NULL,
H5FD__ros3_str_token_delete, H5FD__ros3_str_token_copy, H5FD__ros3_str_token_cmp,
H5FD__ros3_str_token_close) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTREGISTER, FAIL, "unable to register property in plist")
}

done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pset_fapl_ros3_token() */

#if ROS3_STATS
/*----------------------------------------------------------------------------
*
Expand Down Expand Up @@ -654,6 +914,9 @@ H5FD__ros3_open(const char *url, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
unsigned char signing_key[SHA256_DIGEST_LENGTH];
s3r_t *handle = NULL;
H5FD_ros3_fapl_t fa;
H5P_genplist_t *plist = NULL;
htri_t token_exists;
char *token;
H5FD_t *ret_value = NULL;

FUNC_ENTER_PACKAGE
Expand Down Expand Up @@ -681,6 +944,16 @@ H5FD__ros3_open(const char *url, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
if (CURLE_OK != curl_global_init(CURL_GLOBAL_DEFAULT))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "unable to initialize curl global (placeholder flags)")

/* Session/security token */
if (NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, NULL, "not a file access property list")
if ((token_exists = H5P_exist_plist(plist, ROS3_TOKEN_PROP_NAME)) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "failed to check if property token exists in plist")
if (token_exists) {
if (H5P_get(plist, ROS3_TOKEN_PROP_NAME, &token) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "unable to get token value")
}

/* open file; procedure depends on whether or not the fapl instructs to
* authenticate requests or not.
*/
Expand All @@ -697,11 +970,15 @@ H5FD__ros3_open(const char *url, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
(const char *)fa.aws_region, (const char *)iso8601now))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "problem while computing signing key")

handle = H5FD_s3comms_s3r_open(url, (const char *)fa.aws_region, (const char *)fa.secret_id,
(const unsigned char *)signing_key);
if (token_exists)
handle = H5FD_s3comms_s3r_open(url, (const char *)fa.aws_region, (const char *)fa.secret_id,
(const unsigned char *)signing_key, (const char *)token);
else
handle = H5FD_s3comms_s3r_open(url, (const char *)fa.aws_region, (const char *)fa.secret_id,
(const unsigned char *)signing_key, "");
}
else
handle = H5FD_s3comms_s3r_open(url, NULL, NULL, NULL);
handle = H5FD_s3comms_s3r_open(url, NULL, NULL, NULL, NULL);

if (handle == NULL)
/* If we want to check CURL's say on the matter in a controlled
Expand Down
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