diff --git a/include/crm/common/rules_internal.h b/include/crm/common/rules_internal.h index 3d58128d82..37695188ad 100644 --- a/include/crm/common/rules_internal.h +++ b/include/crm/common/rules_internal.h @@ -1,52 +1,54 @@ /* * Copyright 2004-2024 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 PCMK__CRM_COMMON_RULES_INTERNAL__H #define PCMK__CRM_COMMON_RULES_INTERNAL__H #include <regex.h> // regmatch_t #include <libxml/tree.h> // xmlNode #include <crm/common/rules.h> // enum expression_type #include <crm/common/iso8601.h> // crm_time_t // How node attribute values may be compared in rules enum pcmk__comparison { pcmk__comparison_unknown, pcmk__comparison_defined, pcmk__comparison_undefined, pcmk__comparison_eq, pcmk__comparison_ne, pcmk__comparison_lt, pcmk__comparison_lte, pcmk__comparison_gt, pcmk__comparison_gte, }; // How node attribute values may be parsed in rules enum pcmk__type { pcmk__type_unknown, pcmk__type_string, pcmk__type_integer, pcmk__type_number, pcmk__type_version, }; enum expression_type pcmk__expression_type(const xmlNode *expr); enum pcmk__comparison pcmk__parse_comparison(const char *op); enum pcmk__type pcmk__parse_type(const char *type, enum pcmk__comparison op, const char *value1, const char *value2); +int pcmk__cmp_by_type(const char *l_val, const char *r_val, + enum pcmk__type type); char *pcmk__replace_submatches(const char *string, const char *match, const regmatch_t submatches[], int nmatches); int pcmk__evaluate_date_expression(const xmlNode *date_expression, const crm_time_t *now, crm_time_t *next_change); #endif // PCMK__CRM_COMMON_RULES_INTERNAL__H diff --git a/lib/common/rules.c b/lib/common/rules.c index ef573e0520..bb58edb980 100644 --- a/lib/common/rules.c +++ b/lib/common/rules.c @@ -1,800 +1,894 @@ /* * Copyright 2004-2024 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. */ #include <crm_internal.h> #include <stdio.h> // NULL, size_t #include <stdlib.h> // calloc() #include <stdbool.h> // bool #include <ctype.h> // isdigit() #include <regex.h> // regmatch_t #include <stdint.h> // uint32_t #include <inttypes.h> // PRIu32 #include <glib.h> // gboolean, FALSE #include <libxml/tree.h> // xmlNode #include <crm/common/scheduler.h> #include <crm/common/iso8601_internal.h> #include <crm/common/nvpair_internal.h> #include <crm/common/scheduler_internal.h> #include "crmcommon_private.h" /*! * \internal * \brief Get the expression type corresponding to given expression XML * * \param[in] expr Rule expression XML * * \return Expression type corresponding to \p expr */ enum expression_type pcmk__expression_type(const xmlNode *expr) { const char *name = NULL; // Expression types based on element name if (pcmk__xe_is(expr, PCMK_XE_DATE_EXPRESSION)) { return pcmk__subexpr_datetime; } else if (pcmk__xe_is(expr, PCMK_XE_RSC_EXPRESSION)) { return pcmk__subexpr_resource; } else if (pcmk__xe_is(expr, PCMK_XE_OP_EXPRESSION)) { return pcmk__subexpr_operation; } else if (pcmk__xe_is(expr, PCMK_XE_RULE)) { return pcmk__subexpr_rule; } else if (!pcmk__xe_is(expr, PCMK_XE_EXPRESSION)) { return pcmk__subexpr_unknown; } // Expression types based on node attribute name name = crm_element_value(expr, PCMK_XA_ATTRIBUTE); if (pcmk__str_any_of(name, CRM_ATTR_UNAME, CRM_ATTR_KIND, CRM_ATTR_ID, NULL)) { return pcmk__subexpr_location; } return pcmk__subexpr_attribute; } /*! * \internal * \brief Get parent XML element's ID for logging purposes * * \param[in] xml XML of a subelement * * \return ID of \p xml's parent for logging purposes (guaranteed non-NULL) */ static const char * loggable_parent_id(const xmlNode *xml) { // Default if called without parent (likely for unit testing) const char *parent_id = "implied"; if ((xml != NULL) && (xml->parent != NULL)) { parent_id = pcmk__xe_id(xml->parent); if (parent_id == NULL) { // Not possible with schema validation enabled parent_id = "without ID"; } } return parent_id; } /*! * \internal * \brief Get the moon phase corresponding to a given date/time * * \param[in] now Date/time to get moon phase for * * \return Phase of the moon corresponding to \p now, where 0 is the new moon * and 7 is the full moon * \deprecated This feature has been deprecated since 2.1.6. */ static int phase_of_the_moon(const crm_time_t *now) { /* As per the nethack rules: * - A moon period is 29.53058 days ~= 30 * - A year is 365.2422 days * - Number of days moon phase advances on first day of year compared to * preceding year is (365.2422 - 12 * 29.53058) ~= 11 * - Number of years until same phases fall on the same days of the month * is 18.6 ~= 19 * - Moon phase on first day of year (epact) ~= (11 * (year%19) + 29) % 30 * (29 as initial condition) * - Current phase in days = first day phase + days elapsed in year * - 6 moons ~= 177 days ~= 8 reported phases * 22 (+ 11/22 for rounding) */ uint32_t epact, diy, goldn; uint32_t y; crm_time_get_ordinal(now, &y, &diy); goldn = (y % 19) + 1; epact = (11 * goldn + 18) % 30; if (((epact == 25) && (goldn > 11)) || (epact == 24)) { epact++; } return (((((diy + epact) * 6) + 11) % 177) / 22) & 7; } /*! * \internal * \brief Check an integer value against a range from a date specification * * \param[in] date_spec XML of PCMK_XE_DATE_SPEC element to check * \param[in] id XML ID for logging purposes * \param[in] attr Name of XML attribute with range to check against * \param[in] value Value to compare against range * * \return Standard Pacemaker return code (specifically, pcmk_rc_before_range, * pcmk_rc_after_range, or pcmk_rc_ok to indicate that result is either * within range or undetermined) * \note We return pcmk_rc_ok for an undetermined result so we can continue * checking the next range attribute. */ static int check_range(const xmlNode *date_spec, const char *id, const char *attr, uint32_t value) { int rc = pcmk_rc_ok; const char *range = crm_element_value(date_spec, attr); long long low, high; if (range == NULL) { // Attribute not present goto bail; } if (pcmk__parse_ll_range(range, &low, &high) != pcmk_rc_ok) { // Invalid range /* @COMPAT When we can break behavioral backward compatibility, treat * the entire rule as not passing. */ pcmk__config_err("Ignoring " PCMK_XE_DATE_SPEC " %s attribute %s because '%s' is not a valid range", id, attr, range); } else if ((low != -1) && (value < low)) { rc = pcmk_rc_before_range; } else if ((high != -1) && (value > high)) { rc = pcmk_rc_after_range; } bail: crm_trace("Checked " PCMK_XE_DATE_SPEC " %s %s='%s' for %" PRIu32 ": %s", id, attr, pcmk__s(range, ""), value, pcmk_rc_str(rc)); return rc; } /*! * \internal * \brief Evaluate a date specification for a given date/time * * \param[in] date_spec XML of PCMK_XE_DATE_SPEC element to evaluate * \param[in] now Time to check * * \return Standard Pacemaker return code (specifically, EINVAL for NULL * arguments, pcmk_rc_ok if time matches specification, or * pcmk_rc_before_range, pcmk_rc_after_range, or pcmk_rc_op_unsatisfied * as appropriate to how time relates to specification) */ int pcmk__evaluate_date_spec(const xmlNode *date_spec, const crm_time_t *now) { const char *id = NULL; const char *parent_id = loggable_parent_id(date_spec); // Range attributes that can be specified for a PCMK_XE_DATE_SPEC element struct range { const char *attr; uint32_t value; } ranges[] = { { PCMK_XA_YEARS, 0U }, { PCMK_XA_MONTHS, 0U }, { PCMK_XA_MONTHDAYS, 0U }, { PCMK_XA_HOURS, 0U }, { PCMK_XA_MINUTES, 0U }, { PCMK_XA_SECONDS, 0U }, { PCMK_XA_YEARDAYS, 0U }, { PCMK_XA_WEEKYEARS, 0U }, { PCMK_XA_WEEKS, 0U }, { PCMK_XA_WEEKDAYS, 0U }, { PCMK__XA_MOON, 0U }, }; if ((date_spec == NULL) || (now == NULL)) { return EINVAL; } // Get specification ID (for logging) id = pcmk__xe_id(date_spec); if (pcmk__str_empty(id)) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * fail the specification */ pcmk__config_warn(PCMK_XE_DATE_SPEC " subelement of " PCMK_XE_DATE_EXPRESSION " %s has no " PCMK_XA_ID, parent_id); id = "without ID"; // for logging } // Year, month, day crm_time_get_gregorian(now, &(ranges[0].value), &(ranges[1].value), &(ranges[2].value)); // Hour, minute, second crm_time_get_timeofday(now, &(ranges[3].value), &(ranges[4].value), &(ranges[5].value)); // Year (redundant) and day of year crm_time_get_ordinal(now, &(ranges[0].value), &(ranges[6].value)); // Week year, week of week year, day of week crm_time_get_isoweek(now, &(ranges[7].value), &(ranges[8].value), &(ranges[9].value)); // Moon phase (deprecated) ranges[10].value = phase_of_the_moon(now); if (crm_element_value(date_spec, PCMK__XA_MOON) != NULL) { pcmk__config_warn("Support for '" PCMK__XA_MOON "' in " PCMK_XE_DATE_SPEC " elements (such as %s) is " "deprecated and will be removed in a future release " "of Pacemaker", id); } for (int i = 0; i < PCMK__NELEM(ranges); ++i) { int rc = check_range(date_spec, id, ranges[i].attr, ranges[i].value); if (rc != pcmk_rc_ok) { return rc; } } // All specified ranges passed, or none were given (also considered a pass) return pcmk_rc_ok; } #define ADD_COMPONENT(component) do { \ int sub_rc = pcmk__add_time_from_xml(*end, component, duration); \ if (sub_rc != pcmk_rc_ok) { \ /* @COMPAT return sub_rc when we can break compatibility */ \ pcmk__config_warn("Ignoring %s in " PCMK_XE_DURATION " %s " \ "because it is invalid", \ pcmk__time_component_attr(component), id); \ rc = sub_rc; \ } \ } while (0) /*! * \internal * \brief Given a duration and a start time, calculate the end time * * \param[in] duration XML of PCMK_XE_DURATION element * \param[in] start Start time * \param[out] end Where to store end time (\p *end must be NULL * initially) * * \return Standard Pacemaker return code * \note The caller is responsible for freeing \p *end using crm_time_free(). */ int pcmk__unpack_duration(const xmlNode *duration, const crm_time_t *start, crm_time_t **end) { int rc = pcmk_rc_ok; const char *id = NULL; const char *parent_id = loggable_parent_id(duration); if ((start == NULL) || (duration == NULL) || (end == NULL) || (*end != NULL)) { return EINVAL; } // Get duration ID (for logging) id = pcmk__xe_id(duration); if (pcmk__str_empty(id)) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error instead */ pcmk__config_warn(PCMK_XE_DURATION " subelement of " PCMK_XE_DATE_EXPRESSION " %s has no " PCMK_XA_ID, parent_id); id = "without ID"; } *end = pcmk_copy_time(start); ADD_COMPONENT(pcmk__time_years); ADD_COMPONENT(pcmk__time_months); ADD_COMPONENT(pcmk__time_weeks); ADD_COMPONENT(pcmk__time_days); ADD_COMPONENT(pcmk__time_hours); ADD_COMPONENT(pcmk__time_minutes); ADD_COMPONENT(pcmk__time_seconds); return rc; } /*! * \internal * \brief Evaluate a range check for a given date/time * * \param[in] date_expression XML of PCMK_XE_DATE_EXPRESSION element * \param[in] id Expression ID for logging purposes * \param[in] now Date/time to compare * \param[in,out] next_change If not NULL, set this to when the evaluation * will change, if known and earlier than the * original value * * \return Standard Pacemaker return code */ static int evaluate_in_range(const xmlNode *date_expression, const char *id, const crm_time_t *now, crm_time_t *next_change) { crm_time_t *start = NULL; crm_time_t *end = NULL; if (pcmk__xe_get_datetime(date_expression, PCMK_XA_START, &start) != pcmk_rc_ok) { /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Ignoring " PCMK_XA_START " in " PCMK_XE_DATE_EXPRESSION " %s because it is invalid", id); } if (pcmk__xe_get_datetime(date_expression, PCMK_XA_END, &end) != pcmk_rc_ok) { /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Ignoring " PCMK_XA_END " in " PCMK_XE_DATE_EXPRESSION " %s because it is invalid", id); } if ((start == NULL) && (end == NULL)) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not " "passing because in_range requires at least one of " PCMK_XA_START " or " PCMK_XA_END, id); return pcmk_rc_undetermined; } if (end == NULL) { xmlNode *duration = first_named_child(date_expression, PCMK_XE_DURATION); if (duration != NULL) { /* @COMPAT When we can break behavioral backward compatibility, * return the result of this if not OK */ pcmk__unpack_duration(duration, start, &end); } } if ((start != NULL) && (crm_time_compare(now, start) < 0)) { pcmk__set_time_if_earlier(next_change, start); crm_time_free(start); crm_time_free(end); return pcmk_rc_before_range; } if (end != NULL) { if (crm_time_compare(now, end) > 0) { crm_time_free(start); crm_time_free(end); return pcmk_rc_after_range; } // Evaluation doesn't change until second after end if (next_change != NULL) { crm_time_add_seconds(end, 1); pcmk__set_time_if_earlier(next_change, end); } } crm_time_free(start); crm_time_free(end); return pcmk_rc_within_range; } /*! * \internal * \brief Evaluate a greater-than check for a given date/time * * \param[in] date_expression XML of PCMK_XE_DATE_EXPRESSION element * \param[in] id Expression ID for logging purposes * \param[in] now Date/time to compare * \param[in,out] next_change If not NULL, set this to when the evaluation * will change, if known and earlier than the * original value * * \return Standard Pacemaker return code */ static int evaluate_gt(const xmlNode *date_expression, const char *id, const crm_time_t *now, crm_time_t *next_change) { crm_time_t *start = NULL; if (pcmk__xe_get_datetime(date_expression, PCMK_XA_START, &start) != pcmk_rc_ok) { /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not " "passing because " PCMK_XA_START " is invalid", id); return pcmk_rc_undetermined; } if (start == NULL) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not " "passing because " PCMK_VALUE_GT " requires " PCMK_XA_START, id); return pcmk_rc_undetermined; } if (crm_time_compare(now, start) > 0) { crm_time_free(start); return pcmk_rc_within_range; } // Evaluation doesn't change until second after start time crm_time_add_seconds(start, 1); pcmk__set_time_if_earlier(next_change, start); crm_time_free(start); return pcmk_rc_before_range; } /*! * \internal * \brief Evaluate a less-than check for a given date/time * * \param[in] date_expression XML of PCMK_XE_DATE_EXPRESSION element * \param[in] id Expression ID for logging purposes * \param[in] now Date/time to compare * \param[in,out] next_change If not NULL, set this to when the evaluation * will change, if known and earlier than the * original value * * \return Standard Pacemaker return code */ static int evaluate_lt(const xmlNode *date_expression, const char *id, const crm_time_t *now, crm_time_t *next_change) { crm_time_t *end = NULL; if (pcmk__xe_get_datetime(date_expression, PCMK_XA_END, &end) != pcmk_rc_ok) { /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not " "passing because " PCMK_XA_END " is invalid", id); return pcmk_rc_undetermined; } if (end == NULL) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not " "passing because " PCMK_VALUE_GT " requires " PCMK_XA_END, id); return pcmk_rc_undetermined; } if (crm_time_compare(now, end) < 0) { pcmk__set_time_if_earlier(next_change, end); crm_time_free(end); return pcmk_rc_within_range; } crm_time_free(end); return pcmk_rc_after_range; } /*! * \internal * \brief Evaluate a rule's date expression for a given date/time * * \param[in] date_expression XML of a PCMK_XE_DATE_EXPRESSION element * \param[in] now Time to use for evaluation * \param[in,out] next_change If not NULL, set this to when the evaluation * will change, if known and earlier than the * original value * * \return Standard Pacemaker return code (unlike most other evaluation * functions, this can return either pcmk_rc_ok or pcmk_rc_within_range * on success) */ int pcmk__evaluate_date_expression(const xmlNode *date_expression, const crm_time_t *now, crm_time_t *next_change) { const char *id = NULL; const char *op = NULL; int rc = pcmk_rc_undetermined; if ((date_expression == NULL) || (now == NULL)) { return EINVAL; } // Get expression ID (for logging) id = pcmk__xe_id(date_expression); if (pcmk__str_empty(id)) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn(PCMK_XE_DATE_EXPRESSION " element has no " PCMK_XA_ID); id = "without ID"; // for logging } op = crm_element_value(date_expression, PCMK_XA_OPERATION); if (pcmk__str_eq(op, PCMK_VALUE_IN_RANGE, pcmk__str_null_matches|pcmk__str_casei)) { rc = evaluate_in_range(date_expression, id, now, next_change); } else if (pcmk__str_eq(op, PCMK_VALUE_DATE_SPEC, pcmk__str_casei)) { xmlNode *date_spec = first_named_child(date_expression, PCMK_XE_DATE_SPEC); if (date_spec == NULL) { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s " "as not passing because " PCMK_VALUE_DATE_SPEC " operations require a " PCMK_XE_DATE_SPEC " subelement", id); } else { // @TODO set next_change appropriately rc = pcmk__evaluate_date_spec(date_spec, now); } } else if (pcmk__str_eq(op, PCMK_VALUE_GT, pcmk__str_casei)) { rc = evaluate_gt(date_expression, id, now, next_change); } else if (pcmk__str_eq(op, PCMK_VALUE_LT, pcmk__str_casei)) { rc = evaluate_lt(date_expression, id, now, next_change); } else { // Not possible with schema validation enabled /* @COMPAT When we can break behavioral backward compatibility, * return pcmk_rc_unpack_error */ pcmk__config_warn("Treating " PCMK_XE_DATE_EXPRESSION " %s as not passing because '%s' is not a valid " PCMK_XE_OPERATION, op); } crm_trace(PCMK_XE_DATE_EXPRESSION " %s (%s): %s (%d)", id, op, pcmk_rc_str(rc), rc); return rc; } /*! * \internal * \brief Go through submatches in a string, either counting how many bytes * would be needed for the expansion, or performing the expansion, * as requested * * \param[in] string String possibly containing submatch variables * \param[in] match String that matched the regular expression * \param[in] submatches Regular expression submatches (as set by regexec()) * \param[in] nmatches Number of entries in \p submatches[] * \param[out] expansion If not NULL, expand string here (must be * pre-allocated to appropriate size) * \param[out] nbytes If not NULL, set to size needed for expansion * * \return true if any expansion is needed, otherwise false */ static bool process_submatches(const char *string, const char *match, const regmatch_t submatches[], int nmatches, char *expansion, size_t *nbytes) { bool expanded = false; const char *src = string; if (nbytes != NULL) { *nbytes = 1; // Include space for terminator } while (*src != '\0') { int submatch = 0; size_t match_len = 0; if ((src[0] != '%') || !isdigit(src[1])) { /* src does not point to the first character of a %N sequence, * so expand this character as-is */ if (expansion != NULL) { *expansion++ = *src; } if (nbytes != NULL) { ++(*nbytes); } ++src; continue; } submatch = src[1] - '0'; src += 2; // Skip over %N sequence in source string expanded = true; // Expansion will be different from source // Omit sequence from expansion unless it has a non-empty match if ((nmatches <= submatch) // Not enough submatches || (submatches[submatch].rm_so < 0) // Pattern did not match || (submatches[submatch].rm_eo <= submatches[submatch].rm_so)) { // Match was empty continue; } match_len = submatches[submatch].rm_eo - submatches[submatch].rm_so; if (nbytes != NULL) { *nbytes += match_len; } if (expansion != NULL) { memcpy(expansion, match + submatches[submatch].rm_so, match_len); expansion += match_len; } } return expanded; } /*! * \internal * \brief Expand any regular expression submatches (%0-%9) in a string * * \param[in] string String possibly containing submatch variables * \param[in] match String that matched the regular expression * \param[in] submatches Regular expression submatches (as set by regexec()) * \param[in] nmatches Number of entries in \p submatches[] * * \return Newly allocated string identical to \p string with submatches * expanded on success, or NULL if no expansions were needed * \note The caller is responsible for freeing the result with free() */ char * pcmk__replace_submatches(const char *string, const char *match, const regmatch_t submatches[], int nmatches) { size_t nbytes = 0; char *result = NULL; if (pcmk__str_empty(string)) { return NULL; // Nothing to expand } // Calculate how much space will be needed for expanded string if (!process_submatches(string, match, submatches, nmatches, NULL, &nbytes)) { return NULL; // No expansions needed } // Allocate enough space for expanded string result = calloc(nbytes, sizeof(char)); CRM_ASSERT(result != NULL); // Expand submatches (void) process_submatches(string, match, submatches, nmatches, result, NULL); return result; } /*! * \internal * \brief Parse a comparison type from a string * * \param[in] op String with comparison type (valid values are * \c PCMK_VALUE_DEFINED, \c PCMK_VALUE_NOT_DEFINED, * \c PCMK_VALUE_EQ, \c PCMK_VALUE_NE, * \c PCMK_VALUE_LT, \c PCMK_VALUE_LTE, * \c PCMK_VALUE_GT, or \c PCMK_VALUE_GTE) * * \return Comparison type corresponding to \p op */ enum pcmk__comparison pcmk__parse_comparison(const char *op) { if (pcmk__str_eq(op, PCMK_VALUE_DEFINED, pcmk__str_casei)) { return pcmk__comparison_defined; } else if (pcmk__str_eq(op, PCMK_VALUE_NOT_DEFINED, pcmk__str_casei)) { return pcmk__comparison_undefined; } else if (pcmk__str_eq(op, PCMK_VALUE_EQ, pcmk__str_casei)) { return pcmk__comparison_eq; } else if (pcmk__str_eq(op, PCMK_VALUE_NE, pcmk__str_casei)) { return pcmk__comparison_ne; } else if (pcmk__str_eq(op, PCMK_VALUE_LT, pcmk__str_casei)) { return pcmk__comparison_lt; } else if (pcmk__str_eq(op, PCMK_VALUE_LTE, pcmk__str_casei)) { return pcmk__comparison_lte; } else if (pcmk__str_eq(op, PCMK_VALUE_GT, pcmk__str_casei)) { return pcmk__comparison_gt; } else if (pcmk__str_eq(op, PCMK_VALUE_GTE, pcmk__str_casei)) { return pcmk__comparison_gte; } return pcmk__comparison_unknown; } /*! * \internal * \brief Parse a value type from a string * * \param[in] type String with value type (valid values are NULL, * \c PCMK_VALUE_STRING, \c PCMK_VALUE_INTEGER, * \c PCMK_VALUE_NUMBER, and \c PCMK_VALUE_VERSION) * \param[in] op Operation type (used only to select default) * \param[in] value1 First value being compared (used only to select default) * \param[in] value2 Second value being compared (used only to select default) */ enum pcmk__type pcmk__parse_type(const char *type, enum pcmk__comparison op, const char *value1, const char *value2) { if (type == NULL) { switch (op) { case pcmk__comparison_lt: case pcmk__comparison_lte: case pcmk__comparison_gt: case pcmk__comparison_gte: if (((value1 != NULL) && (strchr(value1, '.') != NULL)) || ((value2 != NULL) && (strchr(value2, '.') != NULL))) { return pcmk__type_number; } return pcmk__type_integer; default: return pcmk__type_string; } } if (pcmk__str_eq(type, PCMK_VALUE_STRING, pcmk__str_casei)) { return pcmk__type_string; } else if (pcmk__str_eq(type, PCMK_VALUE_INTEGER, pcmk__str_casei)) { return pcmk__type_integer; } else if (pcmk__str_eq(type, PCMK_VALUE_NUMBER, pcmk__str_casei)) { return pcmk__type_number; } else if (pcmk__str_eq(type, PCMK_VALUE_VERSION, pcmk__str_casei)) { return pcmk__type_version; } return pcmk__type_unknown; } + +/*! + * \internal + * \brief Compare two values in a rule's node attribute expression + * + * \param[in] l_val Value on left-hand side of comparison + * \param[in] r_val Value on right-hand side of comparison + * \param[in] type How to interpret the values + * + * \return -1 if <tt>(l_val < r_val)</tt>, + * 0 if <tt>(l_val == r_val)</tt>, + * 1 if <tt>(l_val > r_val)</tt> + */ +int +pcmk__cmp_by_type(const char *l_val, const char *r_val, enum pcmk__type type) +{ + int cmp = 0; + + if (l_val != NULL && r_val != NULL) { + switch (type) { + case pcmk__type_string: + cmp = strcasecmp(l_val, r_val); + break; + + case pcmk__type_integer: + { + long long l_val_num; + int rc1 = pcmk__scan_ll(l_val, &l_val_num, 0LL); + + long long r_val_num; + int rc2 = pcmk__scan_ll(r_val, &r_val_num, 0LL); + + if ((rc1 == pcmk_rc_ok) && (rc2 == pcmk_rc_ok)) { + if (l_val_num < r_val_num) { + cmp = -1; + } else if (l_val_num > r_val_num) { + cmp = 1; + } else { + cmp = 0; + } + + } else { + crm_debug("Integer parse error. Comparing %s and %s " + "as strings", l_val, r_val); + cmp = pcmk__cmp_by_type(l_val, r_val, + pcmk__type_string); + } + } + break; + + case pcmk__type_number: + { + double l_val_num; + double r_val_num; + + int rc1 = pcmk__scan_double(l_val, &l_val_num, NULL, NULL); + int rc2 = pcmk__scan_double(r_val, &r_val_num, NULL, NULL); + + if (rc1 == pcmk_rc_ok && rc2 == pcmk_rc_ok) { + if (l_val_num < r_val_num) { + cmp = -1; + } else if (l_val_num > r_val_num) { + cmp = 1; + } else { + cmp = 0; + } + + } else { + crm_debug("Floating-point parse error. Comparing %s " + "and %s as strings", l_val, r_val); + cmp = pcmk__cmp_by_type(l_val, r_val, + pcmk__type_string); + } + } + break; + + case pcmk__type_version: + cmp = compare_version(l_val, r_val); + break; + + default: + break; + } + + } else if (l_val == NULL && r_val == NULL) { + cmp = 0; + } else if (r_val == NULL) { + cmp = 1; + } else { // l_val == NULL && r_val != NULL + cmp = -1; + } + + return cmp; +} diff --git a/lib/pengine/rules.c b/lib/pengine/rules.c index 95a593d55f..e71020b2a8 100644 --- a/lib/pengine/rules.c +++ b/lib/pengine/rules.c @@ -1,964 +1,869 @@ /* * Copyright 2004-2024 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. */ #include <crm_internal.h> #include <glib.h> #include <crm/crm.h> #include <crm/common/xml.h> #include <crm/pengine/rules.h> #include <crm/common/iso8601_internal.h> #include <crm/common/nvpair_internal.h> #include <crm/common/rules_internal.h> #include <crm/common/xml_internal.h> #include <crm/pengine/internal.h> #include <crm/pengine/rules_internal.h> #include <sys/types.h> #include <regex.h> CRM_TRACE_INIT_DATA(pe_rules); /*! * \brief Evaluate any rules contained by given XML element * * \param[in,out] xml XML element to check for rules * \param[in] node_hash Node attributes to use to evaluate expressions * \param[in] now Time to use when evaluating expressions * \param[out] next_change If not NULL, set to when evaluation will change * * \return TRUE if no rules, or any of rules present is in effect, else FALSE */ gboolean pe_evaluate_rules(xmlNode *ruleset, GHashTable *node_hash, crm_time_t *now, crm_time_t *next_change) { pe_rule_eval_data_t rule_data = { .node_hash = node_hash, .now = now, .match_data = NULL, .rsc_data = NULL, .op_data = NULL }; return pe_eval_rules(ruleset, &rule_data, next_change); } gboolean pe_test_rule(xmlNode *rule, GHashTable *node_hash, enum rsc_role_e role, crm_time_t *now, crm_time_t *next_change, pe_match_data_t *match_data) { pe_rule_eval_data_t rule_data = { .node_hash = node_hash, .now = now, .match_data = match_data, .rsc_data = NULL, .op_data = NULL }; return pe_eval_expr(rule, &rule_data, next_change); } /*! * \brief Evaluate one rule subelement (pass/fail) * * A rule element may contain another rule, a node attribute expression, or a * date expression. Given any one of those, evaluate it and return whether it * passed. * * \param[in,out] expr Rule subelement XML * \param[in] node_hash Node attributes to use when evaluating expression * \param[in] role Ignored (deprecated) * \param[in] now Time to use when evaluating expression * \param[out] next_change If not NULL, set to when evaluation will change * \param[in] match_data If not NULL, resource back-references and params * * \return TRUE if expression is in effect under given conditions, else FALSE */ gboolean pe_test_expression(xmlNode *expr, GHashTable *node_hash, enum rsc_role_e role, crm_time_t *now, crm_time_t *next_change, pe_match_data_t *match_data) { pe_rule_eval_data_t rule_data = { .node_hash = node_hash, .now = now, .match_data = match_data, .rsc_data = NULL, .op_data = NULL }; return pe_eval_subexpr(expr, &rule_data, next_change); } // Information about a block of nvpair elements typedef struct sorted_set_s { int score; // This block's score for sorting const char *name; // This block's ID const char *special_name; // ID that should sort first xmlNode *attr_set; // This block gboolean overwrite; // Whether existing values will be overwritten } sorted_set_t; static gint sort_pairs(gconstpointer a, gconstpointer b) { const sorted_set_t *pair_a = a; const sorted_set_t *pair_b = b; if (a == NULL && b == NULL) { return 0; } else if (a == NULL) { return 1; } else if (b == NULL) { return -1; } if (pcmk__str_eq(pair_a->name, pair_a->special_name, pcmk__str_casei)) { return -1; } else if (pcmk__str_eq(pair_b->name, pair_a->special_name, pcmk__str_casei)) { return 1; } /* If we're overwriting values, we want lowest score first, so the highest * score is processed last; if we're not overwriting values, we want highest * score first, so nothing else overwrites it. */ if (pair_a->score < pair_b->score) { return pair_a->overwrite? -1 : 1; } else if (pair_a->score > pair_b->score) { return pair_a->overwrite? 1 : -1; } return 0; } static void populate_hash(xmlNode * nvpair_list, GHashTable * hash, gboolean overwrite, xmlNode * top) { const char *name = NULL; const char *value = NULL; const char *old_value = NULL; xmlNode *list = nvpair_list; xmlNode *an_attr = NULL; if (pcmk__xe_is(list->children, PCMK__XE_ATTRIBUTES)) { list = list->children; } for (an_attr = pcmk__xe_first_child(list); an_attr != NULL; an_attr = pcmk__xe_next(an_attr)) { if (pcmk__xe_is(an_attr, PCMK_XE_NVPAIR)) { xmlNode *ref_nvpair = expand_idref(an_attr, top); name = crm_element_value(an_attr, PCMK_XA_NAME); if ((name == NULL) && (ref_nvpair != NULL)) { name = crm_element_value(ref_nvpair, PCMK_XA_NAME); } value = crm_element_value(an_attr, PCMK_XA_VALUE); if ((value == NULL) && (ref_nvpair != NULL)) { value = crm_element_value(ref_nvpair, PCMK_XA_VALUE); } if (name == NULL || value == NULL) { continue; } old_value = g_hash_table_lookup(hash, name); if (pcmk__str_eq(value, "#default", pcmk__str_casei)) { if (old_value) { crm_trace("Letting %s default (removing explicit value \"%s\")", name, value); g_hash_table_remove(hash, name); } continue; } else if (old_value == NULL) { crm_trace("Setting %s=\"%s\"", name, value); pcmk__insert_dup(hash, name, value); } else if (overwrite) { crm_trace("Setting %s=\"%s\" (overwriting old value \"%s\")", name, value, old_value); pcmk__insert_dup(hash, name, value); } } } } typedef struct unpack_data_s { gboolean overwrite; void *hash; crm_time_t *next_change; const pe_rule_eval_data_t *rule_data; xmlNode *top; } unpack_data_t; static void unpack_attr_set(gpointer data, gpointer user_data) { sorted_set_t *pair = data; unpack_data_t *unpack_data = user_data; if (!pe_eval_rules(pair->attr_set, unpack_data->rule_data, unpack_data->next_change)) { return; } crm_trace("Adding attributes from %s (score %d) %s overwrite", pair->name, pair->score, (unpack_data->overwrite? "with" : "without")); populate_hash(pair->attr_set, unpack_data->hash, unpack_data->overwrite, unpack_data->top); } /*! * \internal * \brief Create a sorted list of nvpair blocks * * \param[in,out] top XML document root (used to expand id-ref's) * \param[in] xml_obj XML element containing blocks of nvpair elements * \param[in] set_name If not NULL, only get blocks of this element * \param[in] always_first If not NULL, sort block with this ID as first * * \return List of sorted_set_t entries for nvpair blocks */ static GList * make_pairs(xmlNode *top, const xmlNode *xml_obj, const char *set_name, const char *always_first, gboolean overwrite) { GList *unsorted = NULL; if (xml_obj == NULL) { return NULL; } for (xmlNode *attr_set = pcmk__xe_first_child(xml_obj); attr_set != NULL; attr_set = pcmk__xe_next(attr_set)) { if ((set_name == NULL) || pcmk__xe_is(attr_set, set_name)) { const char *score = NULL; sorted_set_t *pair = NULL; xmlNode *expanded_attr_set = expand_idref(attr_set, top); if (expanded_attr_set == NULL) { continue; // Not possible with schema validation enabled } pair = calloc(1, sizeof(sorted_set_t)); pair->name = pcmk__xe_id(expanded_attr_set); pair->special_name = always_first; pair->attr_set = expanded_attr_set; pair->overwrite = overwrite; score = crm_element_value(expanded_attr_set, PCMK_XA_SCORE); pair->score = char2score(score); unsorted = g_list_prepend(unsorted, pair); } } return g_list_sort(unsorted, sort_pairs); } /*! * \brief Extract nvpair blocks contained by an XML element into a hash table * * \param[in,out] top XML document root (used to expand id-ref's) * \param[in] xml_obj XML element containing blocks of nvpair elements * \param[in] set_name If not NULL, only use blocks of this element * \param[in] rule_data Matching parameters to use when unpacking * \param[out] hash Where to store extracted name/value pairs * \param[in] always_first If not NULL, process block with this ID first * \param[in] overwrite Whether to replace existing values with same name * \param[out] next_change If not NULL, set to when evaluation will change */ void pe_eval_nvpairs(xmlNode *top, const xmlNode *xml_obj, const char *set_name, const pe_rule_eval_data_t *rule_data, GHashTable *hash, const char *always_first, gboolean overwrite, crm_time_t *next_change) { GList *pairs = make_pairs(top, xml_obj, set_name, always_first, overwrite); if (pairs) { unpack_data_t data = { .hash = hash, .overwrite = overwrite, .next_change = next_change, .top = top, .rule_data = rule_data }; g_list_foreach(pairs, unpack_attr_set, &data); g_list_free_full(pairs, free); } } /*! * \brief Extract nvpair blocks contained by an XML element into a hash table * * \param[in,out] top XML document root (used to expand id-ref's) * \param[in] xml_obj XML element containing blocks of nvpair elements * \param[in] set_name Element name to identify nvpair blocks * \param[in] node_hash Node attributes to use when evaluating rules * \param[out] hash Where to store extracted name/value pairs * \param[in] always_first If not NULL, process block with this ID first * \param[in] overwrite Whether to replace existing values with same name * \param[in] now Time to use when evaluating rules * \param[out] next_change If not NULL, set to when evaluation will change */ void pe_unpack_nvpairs(xmlNode *top, const xmlNode *xml_obj, const char *set_name, GHashTable *node_hash, GHashTable *hash, const char *always_first, gboolean overwrite, crm_time_t *now, crm_time_t *next_change) { pe_rule_eval_data_t rule_data = { .node_hash = node_hash, .now = now, .match_data = NULL, .rsc_data = NULL, .op_data = NULL }; pe_eval_nvpairs(top, xml_obj, set_name, &rule_data, hash, always_first, overwrite, next_change); } /*! * \brief Evaluate rules * * \param[in,out] ruleset XML possibly containing rule sub-elements * \param[in] rule_data * \param[out] next_change If not NULL, set to when evaluation will change * * \return TRUE if there are no rules or */ gboolean pe_eval_rules(xmlNode *ruleset, const pe_rule_eval_data_t *rule_data, crm_time_t *next_change) { // If there are no rules, pass by default gboolean ruleset_default = TRUE; for (xmlNode *rule = first_named_child(ruleset, PCMK_XE_RULE); rule != NULL; rule = crm_next_same_xml(rule)) { ruleset_default = FALSE; if (pe_eval_expr(rule, rule_data, next_change)) { /* Only the deprecated PCMK__XE_LIFETIME element of location * constraints may contain more than one rule at the top level -- * the schema limits a block of nvpairs to a single top-level rule. * So, this effectively means that a lifetime is active if any rule * it contains is active. */ return TRUE; } } return ruleset_default; } /*! * \brief Evaluate all of a rule's expressions * * \param[in,out] rule XML containing a rule definition or its id-ref * \param[in] rule_data Matching parameters to check against rule * \param[out] next_change If not NULL, set to when evaluation will change * * \return TRUE if \p rule_data passes \p rule, otherwise FALSE */ gboolean pe_eval_expr(xmlNode *rule, const pe_rule_eval_data_t *rule_data, crm_time_t *next_change) { xmlNode *expr = NULL; gboolean test = TRUE; gboolean empty = TRUE; gboolean passed = TRUE; gboolean do_and = TRUE; const char *value = NULL; rule = expand_idref(rule, NULL); if (rule == NULL) { return FALSE; // Not possible with schema validation enabled } value = crm_element_value(rule, PCMK_XA_BOOLEAN_OP); if (pcmk__str_eq(value, PCMK_VALUE_OR, pcmk__str_casei)) { do_and = FALSE; passed = FALSE; } else if (!pcmk__str_eq(value, PCMK_VALUE_AND, pcmk__str_null_matches|pcmk__str_casei)) { pcmk__config_warn("Rule %s has invalid " PCMK_XA_BOOLEAN_OP " value '%s', using default ('" PCMK_VALUE_AND "')", pcmk__xe_id(rule), value); } crm_trace("Testing rule %s", pcmk__xe_id(rule)); for (expr = pcmk__xe_first_child(rule); expr != NULL; expr = pcmk__xe_next(expr)) { test = pe_eval_subexpr(expr, rule_data, next_change); empty = FALSE; if (test && do_and == FALSE) { crm_trace("Expression %s/%s passed", pcmk__xe_id(rule), pcmk__xe_id(expr)); return TRUE; } else if (test == FALSE && do_and) { crm_trace("Expression %s/%s failed", pcmk__xe_id(rule), pcmk__xe_id(expr)); return FALSE; } } if (empty) { pcmk__config_err("Ignoring rule %s because it contains no expressions", pcmk__xe_id(rule)); } crm_trace("Rule %s %s", pcmk__xe_id(rule), passed ? "passed" : "failed"); return passed; } /*! * \brief Evaluate a single rule expression, including any subexpressions * * \param[in,out] expr XML containing a rule expression * \param[in] rule_data Matching parameters to check against expression * \param[out] next_change If not NULL, set to when evaluation will change * * \return TRUE if \p rule_data passes \p expr, otherwise FALSE */ gboolean pe_eval_subexpr(xmlNode *expr, const pe_rule_eval_data_t *rule_data, crm_time_t *next_change) { gboolean accept = FALSE; const char *uname = NULL; switch (pcmk__expression_type(expr)) { case pcmk__subexpr_rule: accept = pe_eval_expr(expr, rule_data, next_change); break; case pcmk__subexpr_attribute: case pcmk__subexpr_location: /* these expressions can never succeed if there is * no node to compare with */ if (rule_data->node_hash != NULL) { accept = pe__eval_attr_expr(expr, rule_data); } break; case pcmk__subexpr_datetime: switch (pcmk__evaluate_date_expression(expr, rule_data->now, next_change)) { case pcmk_rc_within_range: case pcmk_rc_ok: accept = TRUE; break; default: accept = FALSE; break; } break; case pcmk__subexpr_resource: accept = pe__eval_rsc_expr(expr, rule_data); break; case pcmk__subexpr_operation: accept = pe__eval_op_expr(expr, rule_data); break; default: CRM_CHECK(FALSE /* bad type */ , return FALSE); accept = FALSE; } if (rule_data->node_hash) { uname = g_hash_table_lookup(rule_data->node_hash, CRM_ATTR_UNAME); } crm_trace("Expression %s %s on %s", pcmk__xe_id(expr), (accept? "passed" : "failed"), pcmk__s(uname, "all nodes")); return accept; } -/*! - * \internal - * \brief Compare two values in a rule's node attribute expression - * - * \param[in] l_val Value on left-hand side of comparison - * \param[in] r_val Value on right-hand side of comparison - * \param[in] type How to interpret the values - * - * \return -1 if <tt>(l_val < r_val)</tt>, - * 0 if <tt>(l_val == r_val)</tt>, - * 1 if <tt>(l_val > r_val)</tt> - */ -static int -compare_attr_expr_vals(const char *l_val, const char *r_val, - enum pcmk__type type) -{ - int cmp = 0; - - if (l_val != NULL && r_val != NULL) { - switch (type) { - case pcmk__type_string: - cmp = strcasecmp(l_val, r_val); - break; - - case pcmk__type_integer: - { - long long l_val_num; - int rc1 = pcmk__scan_ll(l_val, &l_val_num, 0LL); - - long long r_val_num; - int rc2 = pcmk__scan_ll(r_val, &r_val_num, 0LL); - - if ((rc1 == pcmk_rc_ok) && (rc2 == pcmk_rc_ok)) { - if (l_val_num < r_val_num) { - cmp = -1; - } else if (l_val_num > r_val_num) { - cmp = 1; - } else { - cmp = 0; - } - - } else { - crm_debug("Integer parse error. Comparing %s and %s " - "as strings", l_val, r_val); - cmp = compare_attr_expr_vals(l_val, r_val, - pcmk__type_string); - } - } - break; - - case pcmk__type_number: - { - double l_val_num; - double r_val_num; - - int rc1 = pcmk__scan_double(l_val, &l_val_num, NULL, NULL); - int rc2 = pcmk__scan_double(r_val, &r_val_num, NULL, NULL); - - if (rc1 == pcmk_rc_ok && rc2 == pcmk_rc_ok) { - if (l_val_num < r_val_num) { - cmp = -1; - } else if (l_val_num > r_val_num) { - cmp = 1; - } else { - cmp = 0; - } - - } else { - crm_debug("Floating-point parse error. Comparing %s " - "and %s as strings", l_val, r_val); - cmp = compare_attr_expr_vals(l_val, r_val, - pcmk__type_string); - } - } - break; - - case pcmk__type_version: - cmp = compare_version(l_val, r_val); - break; - - default: - break; - } - - } else if (l_val == NULL && r_val == NULL) { - cmp = 0; - } else if (r_val == NULL) { - cmp = 1; - } else { // l_val == NULL && r_val != NULL - cmp = -1; - } - - return cmp; -} - /*! * \internal * \brief Check whether an attribute expression evaluates to \c true * * \param[in] l_val Value on left-hand side of comparison * \param[in] r_val Value on right-hand side of comparison * \param[in] type How to interpret the values * \param[in] op Type of comparison. * * \return \c true if expression evaluates to \c true, \c false * otherwise */ static bool accept_attr_expr(const char *l_val, const char *r_val, enum pcmk__type type, enum pcmk__comparison op) { int cmp; switch (op) { case pcmk__comparison_defined: return (l_val != NULL); case pcmk__comparison_undefined: return (l_val == NULL); default: break; } - cmp = compare_attr_expr_vals(l_val, r_val, type); + cmp = pcmk__cmp_by_type(l_val, r_val, type); switch (op) { case pcmk__comparison_eq: return (cmp == 0); case pcmk__comparison_ne: return (cmp != 0); default: break; } if ((l_val == NULL) || (r_val == NULL)) { // The comparison is meaningless from this point on return false; } switch (op) { case pcmk__comparison_lt: return (cmp < 0); case pcmk__comparison_lte: return (cmp <= 0); case pcmk__comparison_gt: return (cmp > 0); case pcmk__comparison_gte: return (cmp >= 0); default: // Not possible with schema validation enabled return false; } } /*! * \internal * \brief Get correct value according to \c PCMK_XA_VALUE_SOURCE * * \param[in] expr_id Rule expression ID (for logging only) * \param[in] value value given in rule expression * \param[in] value_source \c PCMK_XA_VALUE_SOURCE given in rule expressions * \param[in] match_data If not NULL, resource back-references and params */ static const char * expand_value_source(const char *expr_id, const char *value, const char *value_source, const pe_match_data_t *match_data) { GHashTable *table = NULL; if (pcmk__str_empty(value)) { return NULL; // value_source is irrelevant } else if (pcmk__str_eq(value_source, PCMK_VALUE_PARAM, pcmk__str_casei)) { table = match_data->params; } else if (pcmk__str_eq(value_source, PCMK_VALUE_META, pcmk__str_casei)) { table = match_data->meta; } else { // literal if (!pcmk__str_eq(value_source, PCMK_VALUE_LITERAL, pcmk__str_null_matches|pcmk__str_casei)) { pcmk__config_warn("Expression %s has invalid " PCMK_XA_VALUE_SOURCE " value '%s', using default " "('" PCMK_VALUE_LITERAL "')", pcmk__s(expr_id, "without ID"), value_source); } return value; } if (table == NULL) { return NULL; } return (const char *) g_hash_table_lookup(table, value); } /*! * \internal * \brief Evaluate a node attribute expression based on #uname, #id, #kind, * or a generic node attribute * * \param[in] expr XML of rule expression * \param[in] rule_data The match_data and node_hash members are used * * \return TRUE if rule_data satisfies the expression, FALSE otherwise */ gboolean pe__eval_attr_expr(const xmlNode *expr, const pe_rule_eval_data_t *rule_data) { gboolean attr_allocated = FALSE; const char *h_val = NULL; const char *id = pcmk__xe_id(expr); const char *attr = crm_element_value(expr, PCMK_XA_ATTRIBUTE); const char *op = NULL; const char *type_s = crm_element_value(expr, PCMK_XA_TYPE); const char *value = crm_element_value(expr, PCMK_XA_VALUE); const char *value_source = crm_element_value(expr, PCMK_XA_VALUE_SOURCE); enum pcmk__comparison comparison = pcmk__comparison_unknown; enum pcmk__type type = pcmk__type_unknown; if (attr == NULL) { pcmk__config_err("Expression %s invalid: " PCMK_XA_ATTRIBUTE " not specified", pcmk__s(id, "without ID")); return FALSE; } // Get and validate operation op = crm_element_value(expr, PCMK_XA_OPERATION); comparison = pcmk__parse_comparison(op); if (comparison == pcmk__comparison_unknown) { // Not possible with schema validation enabled if (op == NULL) { pcmk__config_err("Treating expression %s as not passing " "because it has no " PCMK_XA_OPERATION, pcmk__s(id, "without ID")); } else { pcmk__config_err("Treating expression %s as not passing " "because '%s' is not a valid " PCMK_XA_OPERATION, pcmk__s(id, "without ID"), op); } return FALSE; } if (rule_data->match_data != NULL) { // Expand any regular expression submatches (%0-%9) in attribute name if (rule_data->match_data->re != NULL) { const char *match = rule_data->match_data->re->string; const regmatch_t *submatches = rule_data->match_data->re->pmatch; const int nmatches = rule_data->match_data->re->nregs; char *resolved_attr = pcmk__replace_submatches(attr, match, submatches, nmatches); if (resolved_attr != NULL) { attr = (const char *) resolved_attr; attr_allocated = TRUE; } } // Get value appropriate to PCMK_XA_VALUE_SOURCE value = expand_value_source(id, value, value_source, rule_data->match_data); } if (rule_data->node_hash != NULL) { h_val = (const char *)g_hash_table_lookup(rule_data->node_hash, attr); } if (attr_allocated) { free((char *)attr); attr = NULL; } // Get and validate value type (after expanding value) type = pcmk__parse_type(type_s, comparison, h_val, value); if (type == pcmk__type_unknown) { /* Not possible with schema validation enabled * * @COMPAT When we can break behavioral backward compatibility, treat * the expression as not passing. */ pcmk__config_warn("Non-empty node attribute values will be treated as " "equal for expression %s because '%s' is not a " "valid type", pcmk__s(id, "without ID"), type); } return accept_attr_expr(h_val, value, type, comparison); } gboolean pe__eval_op_expr(const xmlNode *expr, const pe_rule_eval_data_t *rule_data) { const char *name = crm_element_value(expr, PCMK_XA_NAME); const char *interval_s = crm_element_value(expr, PCMK_META_INTERVAL); guint interval_ms = 0U; crm_trace("Testing op_defaults expression: %s", pcmk__xe_id(expr)); if (rule_data->op_data == NULL) { crm_trace("No operations data provided"); return FALSE; } if (pcmk_parse_interval_spec(interval_s, &interval_ms) != pcmk_rc_ok) { crm_trace("Could not parse interval: %s", interval_s); return FALSE; } if ((interval_s != NULL) && (interval_ms != rule_data->op_data->interval)) { crm_trace("Interval doesn't match: %d != %d", interval_ms, rule_data->op_data->interval); return FALSE; } if (!pcmk__str_eq(name, rule_data->op_data->op_name, pcmk__str_none)) { crm_trace("Name doesn't match: %s != %s", name, rule_data->op_data->op_name); return FALSE; } return TRUE; } gboolean pe__eval_rsc_expr(const xmlNode *expr, const pe_rule_eval_data_t *rule_data) { const char *class = crm_element_value(expr, PCMK_XA_CLASS); const char *provider = crm_element_value(expr, PCMK_XA_PROVIDER); const char *type = crm_element_value(expr, PCMK_XA_TYPE); crm_trace("Testing rsc_defaults expression: %s", pcmk__xe_id(expr)); if (rule_data->rsc_data == NULL) { crm_trace("No resource data provided"); return FALSE; } if (class != NULL && !pcmk__str_eq(class, rule_data->rsc_data->standard, pcmk__str_none)) { crm_trace("Class doesn't match: %s != %s", class, rule_data->rsc_data->standard); return FALSE; } if ((provider == NULL && rule_data->rsc_data->provider != NULL) || (provider != NULL && rule_data->rsc_data->provider == NULL) || !pcmk__str_eq(provider, rule_data->rsc_data->provider, pcmk__str_none)) { crm_trace("Provider doesn't match: %s != %s", provider, rule_data->rsc_data->provider); return FALSE; } if (type != NULL && !pcmk__str_eq(type, rule_data->rsc_data->agent, pcmk__str_none)) { crm_trace("Agent doesn't match: %s != %s", type, rule_data->rsc_data->agent); return FALSE; } return TRUE; } // Deprecated functions kept only for backward API compatibility // LCOV_EXCL_START #include <crm/pengine/rules_compat.h> gboolean test_ruleset(xmlNode *ruleset, GHashTable *node_hash, crm_time_t *now) { return pe_evaluate_rules(ruleset, node_hash, now, NULL); } gboolean test_rule(xmlNode * rule, GHashTable * node_hash, enum rsc_role_e role, crm_time_t * now) { return pe_test_rule(rule, node_hash, role, now, NULL, NULL); } gboolean pe_test_rule_re(xmlNode * rule, GHashTable * node_hash, enum rsc_role_e role, crm_time_t * now, pe_re_match_data_t * re_match_data) { pe_match_data_t match_data = { .re = re_match_data, .params = NULL, .meta = NULL, }; return pe_test_rule(rule, node_hash, role, now, NULL, &match_data); } gboolean pe_test_rule_full(xmlNode *rule, GHashTable *node_hash, enum rsc_role_e role, crm_time_t *now, pe_match_data_t *match_data) { return pe_test_rule(rule, node_hash, role, now, NULL, match_data); } gboolean test_expression(xmlNode * expr, GHashTable * node_hash, enum rsc_role_e role, crm_time_t * now) { return pe_test_expression(expr, node_hash, role, now, NULL, NULL); } gboolean pe_test_expression_re(xmlNode * expr, GHashTable * node_hash, enum rsc_role_e role, crm_time_t * now, pe_re_match_data_t * re_match_data) { pe_match_data_t match_data = { .re = re_match_data, .params = NULL, .meta = NULL, }; return pe_test_expression(expr, node_hash, role, now, NULL, &match_data); } gboolean pe_test_expression_full(xmlNode *expr, GHashTable *node_hash, enum rsc_role_e role, crm_time_t *now, pe_match_data_t *match_data) { return pe_test_expression(expr, node_hash, role, now, NULL, match_data); } void unpack_instance_attributes(xmlNode *top, xmlNode *xml_obj, const char *set_name, GHashTable *node_hash, GHashTable *hash, const char *always_first, gboolean overwrite, crm_time_t *now) { pe_rule_eval_data_t rule_data = { .node_hash = node_hash, .now = now, .match_data = NULL, .rsc_data = NULL, .op_data = NULL }; pe_eval_nvpairs(top, xml_obj, set_name, &rule_data, hash, always_first, overwrite, NULL); } enum expression_type find_expression_type(xmlNode *expr) { return pcmk__expression_type(expr); } char * pe_expand_re_matches(const char *string, const pe_re_match_data_t *match_data) { if (match_data == NULL) { return NULL; } return pcmk__replace_submatches(string, match_data->string, match_data->pmatch, match_data->nregs); } // LCOV_EXCL_STOP // End deprecated API