diff --git a/lib/common/crmcommon_private.h b/lib/common/crmcommon_private.h
index db0a25984b..b11ff2b4c9 100644
--- a/lib/common/crmcommon_private.h
+++ b/lib/common/crmcommon_private.h
@@ -1,289 +1,294 @@
/*
- * Copyright 2018-2021 the Pacemaker project contributors
+ * Copyright 2018-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef CRMCOMMON_PRIVATE__H
# define CRMCOMMON_PRIVATE__H
/* This header is for the sole use of libcrmcommon, so that functions can be
* declared with G_GNUC_INTERNAL for efficiency.
*/
#include <stdint.h> // uint8_t, uint32_t
#include <stdbool.h> // bool
#include <sys/types.h> // size_t
#include <glib.h> // GList
#include <libxml/tree.h> // xmlNode, xmlAttr
#include <qb/qbipcc.h> // struct qb_ipc_response_header
// Decent chunk size for processing large amounts of data
#define PCMK__BUFFER_SIZE 4096
+#if defined(PCMK__UNIT_TESTING)
+#undef G_GNUC_INTERNAL
+#define G_GNUC_INTERNAL
+#endif
+
/* When deleting portions of an XML tree, we keep a record so we can know later
* (e.g. when checking differences) that something was deleted.
*/
typedef struct pcmk__deleted_xml_s {
char *path;
int position;
} pcmk__deleted_xml_t;
typedef struct xml_private_s {
long check;
uint32_t flags;
char *user;
GList *acls;
GList *deleted_objs; // List of pcmk__deleted_xml_t
} xml_private_t;
#define pcmk__set_xml_flags(xml_priv, flags_to_set) do { \
(xml_priv)->flags = pcmk__set_flags_as(__func__, __LINE__, \
LOG_NEVER, "XML", "XML node", (xml_priv)->flags, \
(flags_to_set), #flags_to_set); \
} while (0)
#define pcmk__clear_xml_flags(xml_priv, flags_to_clear) do { \
(xml_priv)->flags = pcmk__clear_flags_as(__func__, __LINE__, \
LOG_NEVER, "XML", "XML node", (xml_priv)->flags, \
(flags_to_clear), #flags_to_clear); \
} while (0)
G_GNUC_INTERNAL
void pcmk__xml2text(xmlNode *data, int options, char **buffer, int *offset,
int *max, int depth);
G_GNUC_INTERNAL
void pcmk__buffer_add_char(char **buffer, int *offset, int *max, char c);
G_GNUC_INTERNAL
bool pcmk__tracking_xml_changes(xmlNode *xml, bool lazy);
G_GNUC_INTERNAL
int pcmk__element_xpath(const char *prefix, xmlNode *xml, char *buffer,
int offset, size_t buffer_size);
G_GNUC_INTERNAL
void pcmk__mark_xml_created(xmlNode *xml);
G_GNUC_INTERNAL
int pcmk__xml_position(xmlNode *xml, enum xml_private_flags ignore_if_set);
G_GNUC_INTERNAL
xmlNode *pcmk__xml_match(xmlNode *haystack, xmlNode *needle, bool exact);
G_GNUC_INTERNAL
void pcmk__xe_log(int log_level, const char *file, const char *function,
int line, const char *prefix, xmlNode *data, int depth,
int options);
G_GNUC_INTERNAL
void pcmk__xml_update(xmlNode *parent, xmlNode *target, xmlNode *update,
bool as_diff);
G_GNUC_INTERNAL
xmlNode *pcmk__xc_match(xmlNode *root, xmlNode *search_comment, bool exact);
G_GNUC_INTERNAL
void pcmk__xc_update(xmlNode *parent, xmlNode *target, xmlNode *update);
G_GNUC_INTERNAL
void pcmk__free_acls(GList *acls);
G_GNUC_INTERNAL
void pcmk__unpack_acl(xmlNode *source, xmlNode *target, const char *user);
G_GNUC_INTERNAL
bool pcmk__is_user_in_group(const char *user, const char *group);
G_GNUC_INTERNAL
void pcmk__apply_acl(xmlNode *xml);
G_GNUC_INTERNAL
void pcmk__apply_creation_acl(xmlNode *xml, bool check_top);
G_GNUC_INTERNAL
void pcmk__mark_xml_attr_dirty(xmlAttr *a);
G_GNUC_INTERNAL
bool pcmk__xa_filterable(const char *name);
static inline const char *
pcmk__xml_attr_value(const xmlAttr *attr)
{
return ((attr == NULL) || (attr->children == NULL))? NULL
: (const char *) attr->children->content;
}
/*
* IPC
*/
#define PCMK__IPC_VERSION 1
#define PCMK__CONTROLD_API_MAJOR "1"
#define PCMK__CONTROLD_API_MINOR "0"
// IPC behavior that varies by daemon
typedef struct pcmk__ipc_methods_s {
/*!
* \internal
* \brief Allocate any private data needed by daemon IPC
*
* \param[in] api IPC API connection
*
* \return Standard Pacemaker return code
*/
int (*new_data)(pcmk_ipc_api_t *api);
/*!
* \internal
* \brief Free any private data used by daemon IPC
*
* \param[in] api_data Data allocated by new_data() method
*/
void (*free_data)(void *api_data);
/*!
* \internal
* \brief Perform daemon-specific handling after successful connection
*
* Some daemons require clients to register before sending any other
* commands. The controller requires a CRM_OP_HELLO (with no reply), and
* the CIB manager, executor, and fencer require a CRM_OP_REGISTER (with a
* reply). Ideally this would be consistent across all daemons, but for now
* this allows each to do its own authorization.
*
* \param[in] api IPC API connection
*
* \return Standard Pacemaker return code
*/
int (*post_connect)(pcmk_ipc_api_t *api);
/*!
* \internal
* \brief Check whether an IPC request results in a reply
*
* \param[in] api IPC API connection
* \param[in] request IPC request XML
*
* \return true if request would result in an IPC reply, false otherwise
*/
bool (*reply_expected)(pcmk_ipc_api_t *api, xmlNode *request);
/*!
* \internal
* \brief Perform daemon-specific handling of an IPC message
*
* \param[in] api IPC API connection
* \param[in] msg Message read from IPC connection
*
* \return true if more IPC reply messages should be expected
*/
bool (*dispatch)(pcmk_ipc_api_t *api, xmlNode *msg);
/*!
* \internal
* \brief Perform daemon-specific handling of an IPC disconnect
*
* \param[in] api IPC API connection
*/
void (*post_disconnect)(pcmk_ipc_api_t *api);
} pcmk__ipc_methods_t;
// Implementation of pcmk_ipc_api_t
struct pcmk_ipc_api_s {
enum pcmk_ipc_server server; // Daemon this IPC API instance is for
enum pcmk_ipc_dispatch dispatch_type; // How replies should be dispatched
size_t ipc_size_max; // maximum IPC buffer size
crm_ipc_t *ipc; // IPC connection
mainloop_io_t *mainloop_io; // If using mainloop, I/O source for IPC
bool free_on_disconnect; // Whether disconnect should free object
pcmk_ipc_callback_t cb; // Caller-registered callback (if any)
void *user_data; // Caller-registered data (if any)
void *api_data; // For daemon-specific use
pcmk__ipc_methods_t *cmds; // Behavior that varies by daemon
};
typedef struct pcmk__ipc_header_s {
struct qb_ipc_response_header qb;
uint32_t size_uncompressed;
uint32_t size_compressed;
uint32_t flags;
uint8_t version;
} pcmk__ipc_header_t;
G_GNUC_INTERNAL
int pcmk__send_ipc_request(pcmk_ipc_api_t *api, xmlNode *request);
G_GNUC_INTERNAL
void pcmk__call_ipc_callback(pcmk_ipc_api_t *api,
enum pcmk_ipc_event event_type,
crm_exit_t status, void *event_data);
G_GNUC_INTERNAL
unsigned int pcmk__ipc_buffer_size(unsigned int max);
G_GNUC_INTERNAL
bool pcmk__valid_ipc_header(const pcmk__ipc_header_t *header);
G_GNUC_INTERNAL
pcmk__ipc_methods_t *pcmk__attrd_api_methods(void);
G_GNUC_INTERNAL
pcmk__ipc_methods_t *pcmk__controld_api_methods(void);
G_GNUC_INTERNAL
pcmk__ipc_methods_t *pcmk__pacemakerd_api_methods(void);
G_GNUC_INTERNAL
pcmk__ipc_methods_t *pcmk__schedulerd_api_methods(void);
/*
* Logging
*/
/*!
* \brief Check the authenticity of the IPC socket peer process
*
* If everything goes well, peer's authenticity is verified by the means
* of comparing against provided referential UID and GID (either satisfies),
* and the result of this check can be deduced from the return value.
* As an exception, detected UID of 0 ("root") satisfies arbitrary
* provided referential daemon's credentials.
*
* \param[in] qb_ipc libqb client connection if available
* \param[in] sock IPC related, connected Unix socket to check peer of
* \param[in] refuid referential UID to check against
* \param[in] refgid referential GID to check against
* \param[out] gotpid to optionally store obtained PID of the peer
* (not available on FreeBSD, special value of 1
* used instead, and the caller is required to
* special case this value respectively)
* \param[out] gotuid to optionally store obtained UID of the peer
* \param[out] gotgid to optionally store obtained GID of the peer
*
* \return Standard Pacemaker return code
* ie: 0 if it the connection is authentic
* pcmk_rc_ipc_unauthorized if the connection is not authentic,
* standard errors.
*
* \note While this function is tolerant on what constitutes authorized
* IPC daemon process (its effective user matches UID=0 or \p refuid,
* or at least its group matches \p refgid), either or both (in case
* of UID=0) mismatches on the expected credentials of such peer
* process \e shall be investigated at the caller when value of 1
* gets returned there, since higher-than-expected privileges in
* respect to the expected/intended credentials possibly violate
* the least privilege principle and may pose an additional risk
* (i.e. such accidental inconsistency shall be eventually fixed).
*/
int pcmk__crm_ipc_is_authentic_process(qb_ipcc_connection_t *qb_ipc, int sock, uid_t refuid, gid_t refgid,
pid_t *gotpid, uid_t *gotuid, gid_t *gotgid);
#endif // CRMCOMMON_PRIVATE__H