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lvm2/device_mapper/libdm-report.c
Peter Rajnoha 1e31621ceb libdm: report: use 'null' for undefined numeric values in JSON_STD output 
For JSON_STD format, use 'null' if a field has no value at all.

In JSON format, we print undefined numeric values this way:

  "key" = ""

while in JSON_STD format, we print undefined numeric values this way:

  "key" = null

(Keep in mind that 'null' is different from 0 (zero value) which is
a defined value.)
2022-08-11 11:10:11 +02:00

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/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2015 Red Hat, Inc. All rights reserved.
*
* This file is part of the device-mapper userspace tools.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "misc/dmlib.h"
#include "base/memory/zalloc.h"
#include <ctype.h>
#include <math.h> /* fabs() */
#include <float.h> /* DBL_EPSILON */
#include <time.h>
/*
* Internal flags
*/
#define RH_SORT_REQUIRED 0x00000100
#define RH_HEADINGS_PRINTED 0x00000200
#define RH_FIELD_CALC_NEEDED 0x00000400
#define RH_ALREADY_REPORTED 0x00000800
struct selection {
struct dm_pool *mem;
struct selection_node *selection_root;
int add_new_fields;
};
struct report_group_item;
struct dm_report {
struct dm_pool *mem;
/**
* Cache the first row allocated so that all rows and fields
* can be disposed of in a single dm_pool_free() call.
*/
struct row *first_row;
/* To report all available types */
#define REPORT_TYPES_ALL UINT32_MAX
uint32_t report_types;
const char *output_field_name_prefix;
const char *field_prefix;
uint32_t flags;
const char *separator;
uint32_t keys_count;
/* Ordered list of fields needed for this report */
struct dm_list field_props;
/* Rows of report data */
struct dm_list rows;
/* Array of field definitions */
const struct dm_report_field_type *fields;
const char **canonical_field_ids;
const struct dm_report_object_type *types;
/* To store caller private data */
void *private;
/* Selection handle */
struct selection *selection;
/* Null-terminated array of reserved values */
const struct dm_report_reserved_value *reserved_values;
struct dm_hash_table *value_cache;
struct report_group_item *group_item;
};
struct dm_report_group {
dm_report_group_type_t type;
struct dm_pool *mem;
struct dm_list items;
int indent;
};
struct report_group_item {
struct dm_list list;
struct dm_report_group *group;
struct dm_report *report;
union {
uint32_t orig_report_flags;
uint32_t finished_count;
} store;
struct report_group_item *parent;
unsigned output_done:1;
unsigned needs_closing:1;
void *data;
};
/*
* Internal per-field flags
*/
#define FLD_HIDDEN 0x00001000
#define FLD_SORT_KEY 0x00002000
#define FLD_ASCENDING 0x00004000
#define FLD_DESCENDING 0x00008000
#define FLD_COMPACTED 0x00010000
#define FLD_COMPACT_ONE 0x00020000
struct field_properties {
struct dm_list list;
uint32_t field_num;
uint32_t sort_posn;
int32_t initial_width;
int32_t width; /* current width: adjusted by dm_report_object() */
const struct dm_report_object_type *type;
uint32_t flags;
int implicit;
};
/*
* Report selection
*/
struct op_def {
const char *string;
uint32_t flags;
const char *desc;
};
#define FLD_CMP_MASK 0x0FF00000
#define FLD_CMP_UNCOMPARABLE 0x00100000
#define FLD_CMP_EQUAL 0x00200000
#define FLD_CMP_NOT 0x00400000
#define FLD_CMP_GT 0x00800000
#define FLD_CMP_LT 0x01000000
#define FLD_CMP_REGEX 0x02000000
#define FLD_CMP_NUMBER 0x04000000
#define FLD_CMP_TIME 0x08000000
/*
* #define FLD_CMP_STRING 0x10000000
* We could define FLD_CMP_STRING here for completeness here,
* but it's not needed - we can check operator compatibility with
* field type by using FLD_CMP_REGEX, FLD_CMP_NUMBER and
* FLD_CMP_TIME flags only.
*/
/*
* When defining operators, always define longer one before
* shorter one if one is a prefix of another!
* (e.g. =~ comes before =)
*/
static struct op_def _op_cmp[] = {
{ "=~", FLD_CMP_REGEX, "Matching regular expression. [regex]" },
{ "!~", FLD_CMP_REGEX|FLD_CMP_NOT, "Not matching regular expression. [regex]" },
{ "=", FLD_CMP_EQUAL, "Equal to. [number, size, percent, string, string list, time]" },
{ "!=", FLD_CMP_NOT|FLD_CMP_EQUAL, "Not equal to. [number, size, percent, string, string_list, time]" },
{ ">=", FLD_CMP_NUMBER|FLD_CMP_TIME|FLD_CMP_GT|FLD_CMP_EQUAL, "Greater than or equal to. [number, size, percent, time]" },
{ ">", FLD_CMP_NUMBER|FLD_CMP_TIME|FLD_CMP_GT, "Greater than. [number, size, percent, time]" },
{ "<=", FLD_CMP_NUMBER|FLD_CMP_TIME|FLD_CMP_LT|FLD_CMP_EQUAL, "Less than or equal to. [number, size, percent, time]" },
{ "<", FLD_CMP_NUMBER|FLD_CMP_TIME|FLD_CMP_LT, "Less than. [number, size, percent, time]" },
{ "since", FLD_CMP_TIME|FLD_CMP_GT|FLD_CMP_EQUAL, "Since specified time (same as '>='). [time]" },
{ "after", FLD_CMP_TIME|FLD_CMP_GT, "After specified time (same as '>'). [time]"},
{ "until", FLD_CMP_TIME|FLD_CMP_LT|FLD_CMP_EQUAL, "Until specified time (same as '<='). [time]"},
{ "before", FLD_CMP_TIME|FLD_CMP_LT, "Before specified time (same as '<'). [time]"},
{ NULL, 0, NULL }
};
#define SEL_MASK 0x000000FF
#define SEL_ITEM 0x00000001
#define SEL_AND 0x00000002
#define SEL_OR 0x00000004
#define SEL_MODIFIER_MASK 0x00000F00
#define SEL_MODIFIER_NOT 0x00000100
#define SEL_PRECEDENCE_MASK 0x0000F000
#define SEL_PRECEDENCE_PS 0x00001000
#define SEL_PRECEDENCE_PE 0x00002000
#define SEL_LIST_MASK 0x000F0000
#define SEL_LIST_LS 0x00010000
#define SEL_LIST_LE 0x00020000
#define SEL_LIST_SUBSET_LS 0x00040000
#define SEL_LIST_SUBSET_LE 0x00080000
static struct op_def _op_log[] = {
{ "&&", SEL_AND, "All fields must match" },
{ ",", SEL_AND, "All fields must match" },
{ "||", SEL_OR, "At least one field must match" },
{ "#", SEL_OR, "At least one field must match" },
{ "!", SEL_MODIFIER_NOT, "Logical negation" },
{ "(", SEL_PRECEDENCE_PS, "Left parenthesis" },
{ ")", SEL_PRECEDENCE_PE, "Right parenthesis" },
{ "[", SEL_LIST_LS, "List start" },
{ "]", SEL_LIST_LE, "List end"},
{ "{", SEL_LIST_SUBSET_LS, "List subset start"},
{ "}", SEL_LIST_SUBSET_LE, "List subset end"},
{ NULL, 0, NULL},
};
struct selection_str_list {
struct dm_str_list str_list;
unsigned type; /* either SEL_AND or SEL_OR */
};
struct field_selection_value {
union {
const char *s;
uint64_t i;
time_t t;
double d;
struct dm_regex *r;
struct selection_str_list *l;
} v;
struct field_selection_value *next;
};
struct field_selection {
struct field_properties *fp;
uint32_t flags;
struct field_selection_value *value;
};
struct selection_node {
struct dm_list list;
uint32_t type;
union {
struct field_selection *item;
struct dm_list set;
} selection;
};
struct reserved_value_wrapper {
const char *matched_name;
const struct dm_report_reserved_value *reserved;
const void *value;
};
/*
* Report data field
*/
struct dm_report_field {
struct dm_list list;
struct field_properties *props;
const char *report_string; /* Formatted ready for display */
const void *sort_value; /* Raw value for sorting */
};
struct row {
struct dm_list list;
struct dm_report *rh;
struct dm_list fields; /* Fields in display order */
struct dm_report_field *(*sort_fields)[]; /* Fields in sort order */
int selected;
struct dm_report_field *field_sel_status;
};
/*
* Implicit report types and fields.
*/
#define SPECIAL_REPORT_TYPE 0x80000000
#define SPECIAL_FIELD_SELECTED_ID "selected"
#define SPECIAL_FIELD_HELP_ID "help"
#define SPECIAL_FIELD_HELP_ALT_ID "?"
static void *_null_returning_fn(void *obj __attribute__((unused)))
{
return NULL;
}
static int _no_report_fn(struct dm_report *rh __attribute__((unused)),
struct dm_pool *mem __attribute__((unused)),
struct dm_report_field *field __attribute__((unused)),
const void *data __attribute__((unused)),
void *private __attribute__((unused)))
{
return 1;
}
static int _selected_disp(struct dm_report *rh,
struct dm_pool *mem __attribute__((unused)),
struct dm_report_field *field,
const void *data,
void *private __attribute__((unused)))
{
const struct row *row = (const struct row *)data;
return dm_report_field_int(rh, field, &row->selected);
}
static const struct dm_report_object_type _implicit_special_report_types[] = {
{ SPECIAL_REPORT_TYPE, "Special", "special_", _null_returning_fn },
{ 0, "", "", NULL }
};
static const struct dm_report_field_type _implicit_special_report_fields[] = {
{ SPECIAL_REPORT_TYPE, DM_REPORT_FIELD_TYPE_NUMBER | FLD_CMP_UNCOMPARABLE , 0, 8, SPECIAL_FIELD_HELP_ID, "Help", _no_report_fn, "Show help." },
{ SPECIAL_REPORT_TYPE, DM_REPORT_FIELD_TYPE_NUMBER | FLD_CMP_UNCOMPARABLE , 0, 8, SPECIAL_FIELD_HELP_ALT_ID, "Help", _no_report_fn, "Show help." },
{ 0, 0, 0, 0, "", "", 0, 0}
};
static const struct dm_report_field_type _implicit_special_report_fields_with_selection[] = {
{ SPECIAL_REPORT_TYPE, DM_REPORT_FIELD_TYPE_NUMBER, 0, 8, SPECIAL_FIELD_SELECTED_ID, "Selected", _selected_disp, "Set if item passes selection criteria." },
{ SPECIAL_REPORT_TYPE, DM_REPORT_FIELD_TYPE_NUMBER | FLD_CMP_UNCOMPARABLE , 0, 8, SPECIAL_FIELD_HELP_ID, "Help", _no_report_fn, "Show help." },
{ SPECIAL_REPORT_TYPE, DM_REPORT_FIELD_TYPE_NUMBER | FLD_CMP_UNCOMPARABLE , 0, 8, SPECIAL_FIELD_HELP_ALT_ID, "Help", _no_report_fn, "Show help." },
{ 0, 0, 0, 0, "", "", 0, 0}
};
static const struct dm_report_object_type *_implicit_report_types = _implicit_special_report_types;
static const struct dm_report_field_type *_implicit_report_fields = _implicit_special_report_fields;
static const struct dm_report_object_type *_find_type(struct dm_report *rh,
uint32_t report_type)
{
const struct dm_report_object_type *t;
for (t = _implicit_report_types; t->data_fn; t++)
if (t->id == report_type)
return t;
for (t = rh->types; t->data_fn; t++)
if (t->id == report_type)
return t;
return NULL;
}
/*
* Data-munging functions to prepare each data type for display and sorting
*/
int dm_report_field_string(struct dm_report *rh,
struct dm_report_field *field, const char *const *data)
{
char *repstr;
if (!(repstr = dm_pool_strdup(rh->mem, *data))) {
log_error("dm_report_field_string: dm_pool_strdup failed");
return 0;
}
field->report_string = repstr;
field->sort_value = (const void *) field->report_string;
return 1;
}
int dm_report_field_percent(struct dm_report *rh,
struct dm_report_field *field,
const dm_percent_t *data)
{
char *repstr;
uint64_t *sortval;
if (!(sortval = dm_pool_alloc(rh->mem, sizeof(uint64_t)))) {
log_error("dm_report_field_percent: dm_pool_alloc failed for sort_value.");
return 0;
}
*sortval = (uint64_t)(*data);
if (*data == DM_PERCENT_INVALID) {
dm_report_field_set_value(field, "", sortval);
return 1;
}
if (!(repstr = dm_pool_alloc(rh->mem, 8))) {
dm_pool_free(rh->mem, sortval);
log_error("dm_report_field_percent: dm_pool_alloc failed for percent report string.");
return 0;
}
if (dm_snprintf(repstr, 7, "%.2f", dm_percent_to_round_float(*data, 2)) < 0) {
dm_pool_free(rh->mem, sortval);
log_error("dm_report_field_percent: percentage too large.");
return 0;
}
dm_report_field_set_value(field, repstr, sortval);
return 1;
}
struct str_list_sort_value_item {
unsigned pos;
size_t len;
};
struct str_list_sort_value {
const char *value;
struct str_list_sort_value_item *items;
};
struct str_list_sort_item {
const char *str;
struct str_list_sort_value_item item;
};
static int _str_list_sort_item_cmp(const void *a, const void *b)
{
const struct str_list_sort_item *slsi_a = (const struct str_list_sort_item *) a;
const struct str_list_sort_item *slsi_b = (const struct str_list_sort_item *) b;
return strcmp(slsi_a->str, slsi_b->str);
}
static int _report_field_string_list(struct dm_report *rh,
struct dm_report_field *field,
const struct dm_list *data,
const char *delimiter,
int sort)
{
static const char _string_list_grow_object_failed_msg[] = "dm_report_field_string_list: dm_pool_grow_object_failed";
struct str_list_sort_value *sort_value = NULL;
unsigned int list_size, pos, i;
struct str_list_sort_item *arr = NULL;
struct dm_str_list *sl;
size_t delimiter_len, len;
void *object;
int r = 0;
if (!(sort_value = dm_pool_zalloc(rh->mem, sizeof(struct str_list_sort_value)))) {
log_error("dm_report_field_string_list: dm_pool_zalloc failed for sort_value");
return 0;
}
list_size = dm_list_size(data);
/*
* Sort value stores the pointer to the report_string and then
* position and length for each list element withing the report_string.
* The first element stores number of elements in 'len' (therefore
* list_size + 1 is used below for the extra element).
* For example, with this input:
* sort = 0; (we don't want to report sorted)
* report_string = "abc,xy,defgh"; (this is reported)
*
* ...we end up with:
* sort_value->value = report_string; (we'll use the original report_string for indices)
* sort_value->items[0] = {0,3}; (we have 3 items)
* sort_value->items[1] = {0,3}; ("abc")
* sort_value->items[2] = {7,5}; ("defgh")
* sort_value->items[3] = {4,2}; ("xy")
*
* The items alone are always sorted while in report_string they can be
* sorted or not (based on "sort" arg) - it depends on how we prefer to
* display the list. Having items sorted internally helps with searching
* through them.
*/
if (!(sort_value->items = dm_pool_zalloc(rh->mem, (list_size + 1) * sizeof(struct str_list_sort_value_item)))) {
log_error("dm_report_fiel_string_list: dm_pool_zalloc failed for sort value items");
goto out;
}
sort_value->items[0].len = list_size;
/* zero items */
if (!list_size) {
sort_value->value = field->report_string = "";
field->sort_value = sort_value;
return 1;
}
/* one item */
if (list_size == 1) {
sl = (struct dm_str_list *) dm_list_first(data);
if (!sl ||
!(sort_value->value = field->report_string = dm_pool_strdup(rh->mem, sl->str))) {
log_error("dm_report_field_string_list: dm_pool_strdup failed");
goto out;
}
sort_value->items[1].pos = 0;
sort_value->items[1].len = strlen(sl->str);
field->sort_value = sort_value;
return 1;
}
/* more than one item - sort the list */
if (!(arr = malloc(sizeof(struct str_list_sort_item) * list_size))) {
log_error("dm_report_field_string_list: malloc failed");
goto out;
}
if (!(dm_pool_begin_object(rh->mem, 256))) {
log_error(_string_list_grow_object_failed_msg);
goto out;
}
if (!delimiter)
delimiter = ",";
delimiter_len = strlen(delimiter);
i = pos = 0;
dm_list_iterate_items(sl, data) {
arr[i].str = sl->str;
if (!sort) {
/* sorted outpud not required - report the list as it is */
len = strlen(sl->str);
if (!dm_pool_grow_object(rh->mem, arr[i].str, len) ||
(i+1 != list_size && !dm_pool_grow_object(rh->mem, delimiter, delimiter_len))) {
log_error(_string_list_grow_object_failed_msg);
goto out;
}
arr[i].item.pos = pos;
arr[i].item.len = len;
pos = i+1 == list_size ? pos+len : pos+len+delimiter_len;
}
i++;
}
qsort(arr, i, sizeof(struct str_list_sort_item), _str_list_sort_item_cmp);
for (i = 0, pos = 0; i < list_size; i++) {
if (sort) {
/* sorted output required - report the list as sorted */
len = strlen(arr[i].str);
if (!dm_pool_grow_object(rh->mem, arr[i].str, len) ||
(i+1 != list_size && !dm_pool_grow_object(rh->mem, delimiter, delimiter_len))) {
log_error(_string_list_grow_object_failed_msg);
goto out;
}
/*
* Save position and length of the string
* element in report_string for sort_value.
* Use i+1 here since items[0] stores list size!!!
*/
sort_value->items[i+1].pos = pos;
sort_value->items[i+1].len = len;
pos = i+1 == list_size ? pos+len : pos+len+delimiter_len;
} else {
sort_value->items[i+1].pos = arr[i].item.pos;
sort_value->items[i+1].len = arr[i].item.len;
}
}
if (!dm_pool_grow_object(rh->mem, "\0", 1)) {
log_error(_string_list_grow_object_failed_msg);
goto out;
}
object = dm_pool_end_object(rh->mem);
sort_value->value = object;
field->sort_value = sort_value;
field->report_string = object;
r = 1;
out:
if (!r && sort_value)
dm_pool_free(rh->mem, sort_value);
free(arr);
return r;
}
int dm_report_field_string_list(struct dm_report *rh,
struct dm_report_field *field,
const struct dm_list *data,
const char *delimiter)
{
return _report_field_string_list(rh, field, data, delimiter, 1);
}
int dm_report_field_string_list_unsorted(struct dm_report *rh,
struct dm_report_field *field,
const struct dm_list *data,
const char *delimiter)
{
/*
* The raw value is always sorted, just the string reported is unsorted.
* Having the raw value always sorted helps when matching selection list
* with selection criteria.
*/
return _report_field_string_list(rh, field, data, delimiter, 0);
}
int dm_report_field_int(struct dm_report *rh,
struct dm_report_field *field, const int *data)
{
const int value = *data;
uint64_t *sortval;
char *repstr;
if (!(repstr = dm_pool_zalloc(rh->mem, 13))) {
log_error("dm_report_field_int: dm_pool_alloc failed");
return 0;
}
if (!(sortval = dm_pool_alloc(rh->mem, sizeof(int64_t)))) {
log_error("dm_report_field_int: dm_pool_alloc failed");
return 0;
}
if (dm_snprintf(repstr, 12, "%d", value) < 0) {
log_error("dm_report_field_int: int too big: %d", value);
return 0;
}
*sortval = (uint64_t) value;
field->sort_value = sortval;
field->report_string = repstr;
return 1;
}
int dm_report_field_uint32(struct dm_report *rh,
struct dm_report_field *field, const uint32_t *data)
{
const uint32_t value = *data;
uint64_t *sortval;
char *repstr;
if (!(repstr = dm_pool_zalloc(rh->mem, 12))) {
log_error("dm_report_field_uint32: dm_pool_alloc failed");
return 0;
}
if (!(sortval = dm_pool_alloc(rh->mem, sizeof(uint64_t)))) {
log_error("dm_report_field_uint32: dm_pool_alloc failed");
return 0;
}
if (dm_snprintf(repstr, 11, "%u", value) < 0) {
log_error("dm_report_field_uint32: uint32 too big: %u", value);
return 0;
}
*sortval = (uint64_t) value;
field->sort_value = sortval;
field->report_string = repstr;
return 1;
}
int dm_report_field_int32(struct dm_report *rh,
struct dm_report_field *field, const int32_t *data)
{
const int32_t value = *data;
uint64_t *sortval;
char *repstr;
if (!(repstr = dm_pool_zalloc(rh->mem, 13))) {
log_error("dm_report_field_int32: dm_pool_alloc failed");
return 0;
}
if (!(sortval = dm_pool_alloc(rh->mem, sizeof(int64_t)))) {
log_error("dm_report_field_int32: dm_pool_alloc failed");
return 0;
}
if (dm_snprintf(repstr, 12, "%d", value) < 0) {
log_error("dm_report_field_int32: int32 too big: %d", value);
return 0;
}
*sortval = (uint64_t) value;
field->sort_value = sortval;
field->report_string = repstr;
return 1;
}
int dm_report_field_uint64(struct dm_report *rh,
struct dm_report_field *field, const uint64_t *data)
{
const uint64_t value = *data;
uint64_t *sortval;
char *repstr;
if (!(repstr = dm_pool_zalloc(rh->mem, 22))) {
log_error("dm_report_field_uint64: dm_pool_alloc failed");
return 0;
}
if (!(sortval = dm_pool_alloc(rh->mem, sizeof(uint64_t)))) {
log_error("dm_report_field_uint64: dm_pool_alloc failed");
return 0;
}
if (dm_snprintf(repstr, 21, FMTu64 , value) < 0) {
log_error("dm_report_field_uint64: uint64 too big: %" PRIu64, value);
return 0;
}
*sortval = value;
field->sort_value = sortval;
field->report_string = repstr;
return 1;
}
/*
* Helper functions for custom report functions
*/
void dm_report_field_set_value(struct dm_report_field *field, const void *value, const void *sortvalue)
{
field->report_string = (const char *) value;
field->sort_value = sortvalue ? : value;
if ((field->sort_value == value) &&
(field->props->flags & DM_REPORT_FIELD_TYPE_NUMBER))
log_warn(INTERNAL_ERROR "Using string as sort value for numerical field.");
}
static const char *_get_field_type_name(unsigned field_type)
{
switch (field_type) {
case DM_REPORT_FIELD_TYPE_STRING: return "string";
case DM_REPORT_FIELD_TYPE_NUMBER: return "number";
case DM_REPORT_FIELD_TYPE_SIZE: return "size";
case DM_REPORT_FIELD_TYPE_PERCENT: return "percent";
case DM_REPORT_FIELD_TYPE_TIME: return "time";
case DM_REPORT_FIELD_TYPE_STRING_LIST: return "string list";
default: return "unknown";
}
}
/*
* show help message
*/
static size_t _get_longest_field_id_len(const struct dm_report_field_type *fields)
{
uint32_t f;
size_t id_len = 0;
for (f = 0; fields[f].report_fn; f++)
if (strlen(fields[f].id) > id_len)
id_len = strlen(fields[f].id);
return id_len;
}
static void _display_fields_more(struct dm_report *rh,
const struct dm_report_field_type *fields,
size_t id_len, int display_all_fields_item,
int display_field_types)
{
uint32_t f;
const struct dm_report_object_type *type;
const char *desc, *last_desc = "";
for (f = 0; fields[f].report_fn; f++)
if (strlen(fields[f].id) > id_len)
id_len = strlen(fields[f].id);
for (type = rh->types; type->data_fn; type++)
if (strlen(type->prefix) + 3 > id_len)
id_len = strlen(type->prefix) + 3;
for (f = 0; fields[f].report_fn; f++) {
if (!(type = _find_type(rh, fields[f].type))) {
log_debug(INTERNAL_ERROR "Field type undefined.");
continue;
}
desc = (type->desc) ? : " ";
if (desc != last_desc) {
if (*last_desc)
log_warn(" ");
log_warn("%s Fields", desc);
log_warn("%*.*s", (int) strlen(desc) + 7,
(int) strlen(desc) + 7,
"-------------------------------------------------------------------------------");
if (display_all_fields_item && type->id != SPECIAL_REPORT_TYPE)
log_warn(" %sall%-*s - %s", type->prefix,
(int) (id_len - 3 - strlen(type->prefix)), "",
"All fields in this section.");
}
/* FIXME Add line-wrapping at terminal width (or 80 cols) */
log_warn(" %-*s - %s%s%s%s%s", (int) id_len, fields[f].id, fields[f].desc,
display_field_types ? " [" : "",
display_field_types ? fields[f].flags & FLD_CMP_UNCOMPARABLE ? "unselectable " : "" : "",
display_field_types ? _get_field_type_name(fields[f].flags & DM_REPORT_FIELD_TYPE_MASK) : "",
display_field_types ? "]" : "");
last_desc = desc;
}
}
/*
* show help message
*/
static void _display_fields(struct dm_report *rh, int display_all_fields_item,
int display_field_types)
{
size_t tmp, id_len = 0;
if ((tmp = _get_longest_field_id_len(_implicit_report_fields)) > id_len)
id_len = tmp;
if ((tmp = _get_longest_field_id_len(rh->fields)) > id_len)
id_len = tmp;
_display_fields_more(rh, rh->fields, id_len, display_all_fields_item,
display_field_types);
log_warn(" ");
_display_fields_more(rh, _implicit_report_fields, id_len,
display_all_fields_item, display_field_types);
}
/*
* Initialise report handle
*/
static int _copy_field(struct dm_report *rh, struct field_properties *dest,
uint32_t field_num, int implicit)
{
const struct dm_report_field_type *fields = implicit ? _implicit_report_fields
: rh->fields;
dest->field_num = field_num;
dest->initial_width = fields[field_num].width;
dest->width = fields[field_num].width; /* adjusted in _do_report_object() */
dest->flags = fields[field_num].flags & DM_REPORT_FIELD_MASK;
dest->implicit = implicit;
/* set object type method */
dest->type = _find_type(rh, fields[field_num].type);
if (!dest->type) {
log_error("dm_report: field not match: %s",
fields[field_num].id);
return 0;
}
return 1;
}
static struct field_properties * _add_field(struct dm_report *rh,
uint32_t field_num, int implicit,
uint32_t flags)
{
struct field_properties *fp;
if (!(fp = dm_pool_zalloc(rh->mem, sizeof(*fp)))) {
log_error("dm_report: struct field_properties allocation "
"failed");
return NULL;
}
if (!_copy_field(rh, fp, field_num, implicit)) {
stack;
dm_pool_free(rh->mem, fp);
return NULL;
}
fp->flags |= flags;
/*
* Place hidden fields at the front so dm_list_end() will
* tell us when we've reached the last visible field.
*/
if (fp->flags & FLD_HIDDEN)
dm_list_add_h(&rh->field_props, &fp->list);
else
dm_list_add(&rh->field_props, &fp->list);
return fp;
}
static int _get_canonical_field_name(const char *field,
size_t flen,
char *canonical_field,
size_t fcanonical_len,
int *differs)
{
size_t i;
int diff = 0;
for (i = 0; *field && flen; field++, flen--) {
if (*field == '_') {
diff = 1;
continue;
}
if ((i + 1) >= fcanonical_len) {
canonical_field[0] = '\0';
log_error("%s: field name too long.", field);
return 0;
}
canonical_field[i++] = *field;
}
canonical_field[i] = '\0';
if (differs)
*differs = diff;
return 1;
}
/*
* Compare canonical_name1 against canonical_name2 or prefix
* plus canonical_name2. Canonical name is a name where all
* superfluous characters are removed (underscores for now).
* Both names are always null-terminated.
*/
static int _is_same_field(const char *canonical_name1, const char *canonical_name2,
const char *prefix)
{
size_t prefix_len;
/* Exact match? */
if (!strcasecmp(canonical_name1, canonical_name2))
return 1;
/* Match including prefix? */
prefix_len = strlen(prefix) - 1;
if (!strncasecmp(prefix, canonical_name1, prefix_len) &&
!strcasecmp(canonical_name1 + prefix_len, canonical_name2))
return 1;
return 0;
}
/*
* Check for a report type prefix + "all" match.
*/
static void _all_match_combine(const struct dm_report_object_type *types,
unsigned unprefixed_all_matched,
const char *field, size_t flen,
uint32_t *report_types)
{
char field_canon[DM_REPORT_FIELD_TYPE_ID_LEN];
const struct dm_report_object_type *t;
size_t prefix_len;
if (!_get_canonical_field_name(field, flen, field_canon, sizeof(field_canon), NULL))
return;
flen = strlen(field_canon);
for (t = types; t->data_fn; t++) {
prefix_len = strlen(t->prefix) - 1;
if (!strncasecmp(t->prefix, field_canon, prefix_len) &&
((unprefixed_all_matched && (flen == prefix_len)) ||
(!strncasecmp(field_canon + prefix_len, "all", 3) &&
(flen == prefix_len + 3))))
*report_types |= t->id;
}
}
static uint32_t _all_match(struct dm_report *rh, const char *field, size_t flen)
{
uint32_t report_types = 0;
unsigned unprefixed_all_matched = 0;
if (!strncasecmp(field, "all", 3) && flen == 3) {
/* If there's no report prefix, match all report types */
if (!(flen = strlen(rh->field_prefix)))
return rh->report_types ? : REPORT_TYPES_ALL;
/* otherwise include all fields beginning with the report prefix. */
unprefixed_all_matched = 1;
field = rh->field_prefix;
report_types = rh->report_types;
}
/* Combine all report types that have a matching prefix. */
_all_match_combine(rh->types, unprefixed_all_matched, field, flen, &report_types);
return report_types;
}
/*
* Add all fields with a matching type.
*/
static int _add_all_fields(struct dm_report *rh, uint32_t type)
{
uint32_t f;
for (f = 0; rh->fields[f].report_fn; f++)
if ((rh->fields[f].type & type) && !_add_field(rh, f, 0, 0))
return 0;
return 1;
}
static int _get_field(struct dm_report *rh, const char *field, size_t flen,
uint32_t *f_ret, int *implicit)
{
char field_canon[DM_REPORT_FIELD_TYPE_ID_LEN];
uint32_t f;
if (!flen)
return 0;
if (!_get_canonical_field_name(field, flen, field_canon, sizeof(field_canon), NULL))
return_0;
for (f = 0; _implicit_report_fields[f].report_fn; f++) {
if (_is_same_field(_implicit_report_fields[f].id, field_canon, rh->field_prefix)) {
*f_ret = f;
*implicit = 1;
return 1;
}
}
for (f = 0; rh->fields[f].report_fn; f++) {
if (_is_same_field(rh->canonical_field_ids[f], field_canon, rh->field_prefix)) {
*f_ret = f;
*implicit = 0;
return 1;
}
}
return 0;
}
static int _field_match(struct dm_report *rh, const char *field, size_t flen,
unsigned report_type_only)
{
uint32_t f, type;
int implicit;
if (!flen)
return 0;
if ((_get_field(rh, field, flen, &f, &implicit))) {
if (report_type_only) {
rh->report_types |= implicit ? _implicit_report_fields[f].type
: rh->fields[f].type;
return 1;
}
return _add_field(rh, f, implicit, 0) ? 1 : 0;
}
if ((type = _all_match(rh, field, flen))) {
if (report_type_only) {
rh->report_types |= type;
return 1;
}
return _add_all_fields(rh, type);
}
return 0;
}
static int _add_sort_key(struct dm_report *rh, uint32_t field_num, int implicit,
uint32_t flags, unsigned report_type_only)
{
struct field_properties *fp, *found = NULL;
const struct dm_report_field_type *fields = implicit ? _implicit_report_fields
: rh->fields;
dm_list_iterate_items(fp, &rh->field_props) {
if ((fp->implicit == implicit) && (fp->field_num == field_num)) {
found = fp;
break;
}
}
if (!found) {
if (report_type_only)
rh->report_types |= fields[field_num].type;
else if (!(found = _add_field(rh, field_num, implicit, FLD_HIDDEN)))
return_0;
}
if (report_type_only)
return 1;
if (found->flags & FLD_SORT_KEY) {
log_warn("dm_report: Ignoring duplicate sort field: %s.",
fields[field_num].id);
return 1;
}
found->flags |= FLD_SORT_KEY;
found->sort_posn = rh->keys_count++;
found->flags |= flags;
return 1;
}
static int _key_match(struct dm_report *rh, const char *key, size_t len,
unsigned report_type_only)
{
char key_canon[DM_REPORT_FIELD_TYPE_ID_LEN];
uint32_t f;
uint32_t flags;
if (!len)
return 0;
if (*key == '+') {
key++;
len--;
flags = FLD_ASCENDING;
} else if (*key == '-') {
key++;
len--;
flags = FLD_DESCENDING;
} else
flags = FLD_ASCENDING;
if (!len) {
log_error("dm_report: Missing sort field name");
return 0;
}
if (!_get_canonical_field_name(key, len, key_canon, sizeof(key_canon), NULL))
return_0;
for (f = 0; _implicit_report_fields[f].report_fn; f++)
if (_is_same_field(_implicit_report_fields[f].id, key_canon, rh->field_prefix))
return _add_sort_key(rh, f, 1, flags, report_type_only);
for (f = 0; rh->fields[f].report_fn; f++)
if (_is_same_field(rh->canonical_field_ids[f], key_canon, rh->field_prefix))
return _add_sort_key(rh, f, 0, flags, report_type_only);
return 0;
}
static int _parse_fields(struct dm_report *rh, const char *format,
unsigned report_type_only)
{
const char *ws; /* Word start */
const char *we = format; /* Word end */
while (*we) {
/* Allow consecutive commas */
while (*we && *we == ',')
we++;
/* start of the field name */
ws = we;
while (*we && *we != ',')
we++;
if (!_field_match(rh, ws, (size_t) (we - ws), report_type_only)) {
_display_fields(rh, 1, 0);
log_warn(" ");
log_error("Unrecognised field: %.*s", (int) (we - ws), ws);
return 0;
}
}
return 1;
}
static int _parse_keys(struct dm_report *rh, const char *keys,
unsigned report_type_only)
{
const char *ws; /* Word start */
const char *we = keys; /* Word end */
if (!keys)
return 1;
while (*we) {
/* Allow consecutive commas */
while (*we && *we == ',')
we++;
ws = we;
while (*we && *we != ',')
we++;
if (!_key_match(rh, ws, (size_t) (we - ws), report_type_only)) {
_display_fields(rh, 1, 0);
log_warn(" ");
log_error("dm_report: Unrecognised field: %.*s", (int) (we - ws), ws);
return 0;
}
}
return 1;
}
static int _contains_reserved_report_type(const struct dm_report_object_type *types)
{
const struct dm_report_object_type *type, *implicit_type;
for (implicit_type = _implicit_report_types; implicit_type->data_fn; implicit_type++) {
for (type = types; type->data_fn; type++) {
if (implicit_type->id & type->id) {
log_error(INTERNAL_ERROR "dm_report_init: definition of report "
"types given contains reserved identifier");
return 1;
}
}
}
return 0;
}
static void _dm_report_init_update_types(struct dm_report *rh, uint32_t *report_types)
{
const struct dm_report_object_type *type;
if (!report_types)
return;
*report_types = rh->report_types;
/*
* Do not include implicit types as these are not understood by
* dm_report_init caller - the caller doesn't know how to check
* these types anyway.
*/
for (type = _implicit_report_types; type->data_fn; type++)
*report_types &= ~type->id;
}
static int _help_requested(struct dm_report *rh)
{
struct field_properties *fp;
dm_list_iterate_items(fp, &rh->field_props) {
if (fp->implicit &&
(!strcmp(_implicit_report_fields[fp->field_num].id, SPECIAL_FIELD_HELP_ID) ||
!strcmp(_implicit_report_fields[fp->field_num].id, SPECIAL_FIELD_HELP_ALT_ID)))
return 1;
}
return 0;
}
static int _canonicalize_field_ids(struct dm_report *rh)
{
size_t registered_field_count = 0, i;
char canonical_field[DM_REPORT_FIELD_TYPE_ID_LEN];
char *canonical_field_dup;
int differs;
while (*rh->fields[registered_field_count].id)
registered_field_count++;
if (!(rh->canonical_field_ids = dm_pool_alloc(rh->mem, registered_field_count * sizeof(const char *)))) {
log_error("_canonicalize_field_ids: dm_pool_alloc failed");
return 0;
}
for (i = 0; i < registered_field_count; i++) {
if (!_get_canonical_field_name(rh->fields[i].id, strlen(rh->fields[i].id),
canonical_field, sizeof(canonical_field), &differs))
return_0;
if (differs) {
if (!(canonical_field_dup = dm_pool_strdup(rh->mem, canonical_field))) {
log_error("_canonicalize_field_dup: dm_pool_alloc failed.");
return 0;
}
rh->canonical_field_ids[i] = canonical_field_dup;
} else
rh->canonical_field_ids[i] = rh->fields[i].id;
}
return 1;
}
struct dm_report *dm_report_init(uint32_t *report_types,
const struct dm_report_object_type *types,
const struct dm_report_field_type *fields,
const char *output_fields,
const char *output_separator,
uint32_t output_flags,
const char *sort_keys,
void *private_data)
{
struct dm_report *rh;
const struct dm_report_object_type *type;
if (_contains_reserved_report_type(types))
return_NULL;
if (!(rh = zalloc(sizeof(*rh)))) {
log_error("dm_report_init: malloc failed");
return NULL;
}
/*
* rh->report_types is updated in _parse_fields() and _parse_keys()
* to contain all types corresponding to the fields specified by
* fields or keys.
*/
if (report_types)
rh->report_types = *report_types;
rh->separator = output_separator;
rh->fields = fields;
rh->types = types;
rh->private = private_data;
rh->flags |= output_flags & DM_REPORT_OUTPUT_MASK;
/* With columns_as_rows we must buffer and not align. */
if (output_flags & DM_REPORT_OUTPUT_COLUMNS_AS_ROWS) {
if (!(output_flags & DM_REPORT_OUTPUT_BUFFERED))
rh->flags |= DM_REPORT_OUTPUT_BUFFERED;
if (output_flags & DM_REPORT_OUTPUT_ALIGNED)
rh->flags &= ~DM_REPORT_OUTPUT_ALIGNED;
}
if (output_flags & DM_REPORT_OUTPUT_BUFFERED)
rh->flags |= RH_SORT_REQUIRED;
rh->flags |= RH_FIELD_CALC_NEEDED;
dm_list_init(&rh->field_props);
dm_list_init(&rh->rows);
if ((type = _find_type(rh, rh->report_types)) && type->prefix)
rh->field_prefix = type->prefix;
else
rh->field_prefix = "";
if (!(rh->mem = dm_pool_create("report", 10 * 1024))) {
log_error("dm_report_init: allocation of memory pool failed");
free(rh);
return NULL;
}
if (!_canonicalize_field_ids(rh)) {
dm_report_free(rh);
return NULL;
}
/*
* To keep the code needed to add the "all" field to a minimum, we parse
* the field lists twice. The first time we only update the report type.
* FIXME Use one pass instead and expand the "all" field afterwards.
*/
if (!_parse_fields(rh, output_fields, 1) ||
!_parse_keys(rh, sort_keys, 1)) {
dm_report_free(rh);
return NULL;
}
/* Generate list of fields for output based on format string & flags */
if (!_parse_fields(rh, output_fields, 0) ||
!_parse_keys(rh, sort_keys, 0)) {
dm_report_free(rh);
return NULL;
}
/*
* Return updated types value for further compatility check by caller.
*/
_dm_report_init_update_types(rh, report_types);
if (_help_requested(rh)) {
_display_fields(rh, 1, 0);
log_warn(" ");
rh->flags |= RH_ALREADY_REPORTED;
}
return rh;
}
void dm_report_free(struct dm_report *rh)
{
if (rh->selection)
dm_pool_destroy(rh->selection->mem);
if (rh->value_cache)
dm_hash_destroy(rh->value_cache);
dm_pool_destroy(rh->mem);
free(rh);
}
static char *_toupperstr(char *str)
{
char *u = str;
do
*u = toupper(*u);
while (*u++);
return str;
}
int dm_report_set_output_field_name_prefix(struct dm_report *rh, const char *output_field_name_prefix)
{
char *prefix;
if (!(prefix = dm_pool_strdup(rh->mem, output_field_name_prefix))) {
log_error("dm_report_set_output_field_name_prefix: dm_pool_strdup failed");
return 0;
}
rh->output_field_name_prefix = _toupperstr(prefix);
return 1;
}
/*
* Create a row of data for an object
*/
static void *_report_get_field_data(struct dm_report *rh,
struct field_properties *fp, void *object)
{
const struct dm_report_field_type *fields = fp->implicit ? _implicit_report_fields
: rh->fields;
char *ret = fp->type->data_fn(object);
if (!ret)
return NULL;
return (void *)(ret + fields[fp->field_num].offset);
}
static void *_report_get_implicit_field_data(struct dm_report *rh __attribute__((unused)),
struct field_properties *fp, struct row *row)
{
if (!strcmp(_implicit_report_fields[fp->field_num].id, SPECIAL_FIELD_SELECTED_ID))
return row;
return NULL;
}
static int _dbl_equal(double d1, double d2)
{
return fabs(d1 - d2) < DBL_EPSILON;
}
static int _dbl_greater(double d1, double d2)
{
return (d1 > d2) && !_dbl_equal(d1, d2);
}
static int _dbl_less(double d1, double d2)
{
return (d1 < d2) && !_dbl_equal(d1, d2);
}
static int _dbl_greater_or_equal(double d1, double d2)
{
return _dbl_greater(d1, d2) || _dbl_equal(d1, d2);
}
static int _dbl_less_or_equal(double d1, double d2)
{
return _dbl_less(d1, d2) || _dbl_equal(d1, d2);
}
#define _uint64 *(const uint64_t *)
#define _uint64arr(var,index) ((const uint64_t *)(var))[(index)]
#define _str (const char *)
#define _dbl *(const double *)
#define _dblarr(var,index) ((const double *)(var))[(index)]
static int _do_check_value_is_strictly_reserved(unsigned type, const void *res_val, int res_range,
const void *val, struct field_selection *fs)
{
int sel_range = fs ? fs->value->next != NULL : 0;
switch (type & DM_REPORT_FIELD_TYPE_MASK) {
case DM_REPORT_FIELD_TYPE_NUMBER:
if (res_range && sel_range) {
/* both reserved value and selection value are ranges */
if (((_uint64 val >= _uint64arr(res_val,0)) && (_uint64 val <= _uint64arr(res_val,1))) ||
(fs && ((fs->value->v.i == _uint64arr(res_val,0)) && (fs->value->next->v.i == _uint64arr(res_val,1)))))
return 1;
} else if (res_range) {
/* only reserved value is a range */
if (((_uint64 val >= _uint64arr(res_val,0)) && (_uint64 val <= _uint64arr(res_val,1))) ||
(fs && ((fs->value->v.i >= _uint64arr(res_val,0)) && (fs->value->v.i <= _uint64arr(res_val,1)))))
return 1;
} else if (sel_range) {
/* only selection value is a range */
if (((_uint64 val >= _uint64 res_val) && (_uint64 val <= _uint64 res_val)) ||
(fs && ((fs->value->v.i >= _uint64 res_val) && (fs->value->next->v.i <= _uint64 res_val))))
return 1;
} else {
/* neither selection value nor reserved value is a range */
if ((_uint64 val == _uint64 res_val) ||
(fs && (fs->value->v.i == _uint64 res_val)))
return 1;
}
break;
case DM_REPORT_FIELD_TYPE_STRING:
/* there are no ranges for string type yet */
if ((!strcmp(_str val, _str res_val)) ||
(fs && (!strcmp(fs->value->v.s, _str res_val))))
return 1;
break;
case DM_REPORT_FIELD_TYPE_SIZE:
if (res_range && sel_range) {
/* both reserved value and selection value are ranges */
if ((_dbl_greater_or_equal(_dbl val, _dblarr(res_val,0)) && _dbl_less_or_equal(_dbl val, _dblarr(res_val,1))) ||
(fs && (_dbl_equal(fs->value->v.d, _dblarr(res_val,0)) && (_dbl_equal(fs->value->next->v.d, _dblarr(res_val,1))))))
return 1;
} else if (res_range) {
/* only reserved value is a range */
if ((_dbl_greater_or_equal(_dbl val, _dblarr(res_val,0)) && _dbl_less_or_equal(_dbl val, _dblarr(res_val,1))) ||
(fs && (_dbl_greater_or_equal(fs->value->v.d, _dblarr(res_val,0)) && _dbl_less_or_equal(fs->value->v.d, _dblarr(res_val,1)))))
return 1;
} else if (sel_range) {
/* only selection value is a range */
if ((_dbl_greater_or_equal(_dbl val, _dbl res_val) && (_dbl_less_or_equal(_dbl val, _dbl res_val))) ||
(fs && (_dbl_greater_or_equal(fs->value->v.d, _dbl res_val) && _dbl_less_or_equal(fs->value->next->v.d, _dbl res_val))))
return 1;
} else {
/* neither selection value nor reserved value is a range */
if ((_dbl_equal(_dbl val, _dbl res_val)) ||
(fs && (_dbl_equal(fs->value->v.d, _dbl res_val))))
return 1;
}
break;
case DM_REPORT_FIELD_TYPE_STRING_LIST:
/* FIXME Add comparison for string list */
break;
case DM_REPORT_FIELD_TYPE_TIME:
/* FIXME Add comparison for time */
break;
}
return 0;
}
/*
* Used to check whether a value of certain type used in selection is reserved.
*/
static int _check_value_is_strictly_reserved(struct dm_report *rh, uint32_t field_num, unsigned type,
const void *val, struct field_selection *fs)
{
const struct dm_report_reserved_value *iter = rh->reserved_values;
const struct dm_report_field_reserved_value *frv;
int res_range;
if (!iter)
return 0;
while (iter->value) {
/* Only check strict reserved values, not the weaker form ("named" reserved value). */
if (!(iter->type & DM_REPORT_FIELD_RESERVED_VALUE_NAMED)) {
res_range = iter->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE;
if ((iter->type & DM_REPORT_FIELD_TYPE_MASK) == DM_REPORT_FIELD_TYPE_NONE) {
frv = (const struct dm_report_field_reserved_value *) iter->value;
if (frv->field_num == field_num && _do_check_value_is_strictly_reserved(type, frv->value, res_range, val, fs))
return 1;
} else if (iter->type & type && _do_check_value_is_strictly_reserved(type, iter->value, res_range, val, fs))
return 1;
}
iter++;
}
return 0;
}
static int _cmp_field_int(struct dm_report *rh, uint32_t field_num, const char *field_id,
uint64_t val, struct field_selection *fs)
{
int range = fs->value->next != NULL;
const uint64_t sel1 = fs->value->v.i;
const uint64_t sel2 = range ? fs->value->next->v.i : 0;
switch(fs->flags & FLD_CMP_MASK) {
case FLD_CMP_EQUAL:
return range ? ((val >= sel1) && (val <= sel2)) : val == sel1;
case FLD_CMP_NOT|FLD_CMP_EQUAL:
return range ? !((val >= sel1) && (val <= sel2)) : val != sel1;
case FLD_CMP_NUMBER|FLD_CMP_GT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_NUMBER, &val, fs))
return 0;
return range ? val > sel2 : val > sel1;
case FLD_CMP_NUMBER|FLD_CMP_GT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_NUMBER, &val, fs))
return 0;
return val >= sel1;
case FLD_CMP_NUMBER|FLD_CMP_LT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_NUMBER, &val, fs))
return 0;
return val < sel1;
case FLD_CMP_NUMBER|FLD_CMP_LT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_NUMBER, &val, fs))
return 0;
return range ? val <= sel2 : val <= sel1;
default:
log_error(INTERNAL_ERROR "_cmp_field_int: unsupported number "
"comparison type for field %s", field_id);
}
return 0;
}
static int _cmp_field_double(struct dm_report *rh, uint32_t field_num, const char *field_id,
double val, struct field_selection *fs)
{
int range = fs->value->next != NULL;
double sel1 = fs->value->v.d;
double sel2 = range ? fs->value->next->v.d : 0;
switch(fs->flags & FLD_CMP_MASK) {
case FLD_CMP_EQUAL:
return range ? (_dbl_greater_or_equal(val, sel1) && _dbl_less_or_equal(val, sel2))
: _dbl_equal(val, sel1);
case FLD_CMP_NOT|FLD_CMP_EQUAL:
return range ? !(_dbl_greater_or_equal(val, sel1) && _dbl_less_or_equal(val, sel2))
: !_dbl_equal(val, sel1);
case FLD_CMP_NUMBER|FLD_CMP_GT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_SIZE, &val, fs))
return 0;
return range ? _dbl_greater(val, sel2)
: _dbl_greater(val, sel1);
case FLD_CMP_NUMBER|FLD_CMP_GT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_SIZE, &val, fs))
return 0;
return _dbl_greater_or_equal(val, sel1);
case FLD_CMP_NUMBER|FLD_CMP_LT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_SIZE, &val, fs))
return 0;
return _dbl_less(val, sel1);
case FLD_CMP_NUMBER|FLD_CMP_LT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_SIZE, &val, fs))
return 0;
return range ? _dbl_less_or_equal(val, sel2) : _dbl_less_or_equal(val, sel1);
default:
log_error(INTERNAL_ERROR "_cmp_field_double: unsupported number "
"comparison type for selection field %s", field_id);
}
return 0;
}
static int _cmp_field_string(struct dm_report *rh __attribute__((unused)),
uint32_t field_num, const char *field_id,
const char *val, struct field_selection *fs)
{
const char *sel = fs->value->v.s;
switch (fs->flags & FLD_CMP_MASK) {
case FLD_CMP_EQUAL:
return !strcmp(val, sel);
case FLD_CMP_NOT|FLD_CMP_EQUAL:
return strcmp(val, sel);
default:
log_error(INTERNAL_ERROR "_cmp_field_string: unsupported string "
"comparison type for selection field %s", field_id);
}
return 0;
}
static int _cmp_field_time(struct dm_report *rh,
uint32_t field_num, const char *field_id,
time_t val, struct field_selection *fs)
{
int range = fs->value->next != NULL;
time_t sel1 = fs->value->v.t;
time_t sel2 = range ? fs->value->next->v.t : 0;
switch(fs->flags & FLD_CMP_MASK) {
case FLD_CMP_EQUAL:
return range ? ((val >= sel1) && (val <= sel2)) : val == sel1;
case FLD_CMP_NOT|FLD_CMP_EQUAL:
return range ? ((val >= sel1) && (val <= sel2)) : val != sel1;
case FLD_CMP_TIME|FLD_CMP_GT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_TIME, &val, fs))
return 0;
return range ? val > sel2 : val > sel1;
case FLD_CMP_TIME|FLD_CMP_GT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_TIME, &val, fs))
return 0;
return val >= sel1;
case FLD_CMP_TIME|FLD_CMP_LT:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_TIME, &val, fs))
return 0;
return val < sel1;
case FLD_CMP_TIME|FLD_CMP_LT|FLD_CMP_EQUAL:
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_TIME, &val, fs))
return 0;
return range ? val <= sel2 : val <= sel1;
default:
log_error(INTERNAL_ERROR "_cmp_field_time: unsupported time "
"comparison type for field %s", field_id);
}
return 0;
}
/* Matches if all items from selection string list match list value strictly 1:1. */
static int _cmp_field_string_list_strict_all(const struct str_list_sort_value *val,
const struct selection_str_list *sel)
{
unsigned int sel_list_size = dm_list_size(&sel->str_list.list);
struct dm_str_list *sel_item;
unsigned int i = 1;
if (!val->items[0].len) {
if (sel_list_size == 1) {
/* match blank string list with selection defined as blank string only */
sel_item = dm_list_item(dm_list_first(&sel->str_list.list), struct dm_str_list);
return !strcmp(sel_item->str, "");
}
return 0;
}
/* if item count differs, it's clear the lists do not match */
if (val->items[0].len != sel_list_size)
return 0;
/* both lists are sorted so they either match 1:1 or not */
dm_list_iterate_items(sel_item, &sel->str_list.list) {
if ((strlen(sel_item->str) != val->items[i].len) ||
strncmp(sel_item->str, val->value + val->items[i].pos, val->items[i].len))
return 0;
i++;
}
return 1;
}
/* Matches if all items from selection string list match a subset of list value. */
static int _cmp_field_string_list_subset_all(const struct str_list_sort_value *val,
const struct selection_str_list *sel)
{
unsigned int sel_list_size = dm_list_size(&sel->str_list.list);
struct dm_str_list *sel_item;
unsigned int i, last_found = 1;
int r = 0;
if (!val->items[0].len) {
if (sel_list_size == 1) {
/* match blank string list with selection defined as blank string only */
sel_item = dm_list_item(dm_list_first(&sel->str_list.list), struct dm_str_list);
return !strcmp(sel_item->str, "");
}
return 0;
}
/* check selection is a subset of the value */
dm_list_iterate_items(sel_item, &sel->str_list.list) {
r = 0;
for (i = last_found; i <= val->items[0].len; i++) {
if ((strlen(sel_item->str) == val->items[i].len) &&
!strncmp(sel_item->str, val->value + val->items[i].pos, val->items[i].len)) {
last_found = i;
r = 1;
}
}
if (!r)
break;
}
return r;
}
/* Matches if any item from selection string list matches list value. */
static int _cmp_field_string_list_any(const struct str_list_sort_value *val,
const struct selection_str_list *sel)
{
struct dm_str_list *sel_item;
unsigned int i;
/* match blank string list with selection that contains blank string */
if (!val->items[0].len) {
dm_list_iterate_items(sel_item, &sel->str_list.list) {
if (!strcmp(sel_item->str, ""))
return 1;
}
return 0;
}
dm_list_iterate_items(sel_item, &sel->str_list.list) {
/*
* TODO: Optimize this so we don't need to compare the whole lists' content.
* Make use of the fact that the lists are sorted!
*/
for (i = 1; i <= val->items[0].len; i++) {
if ((strlen(sel_item->str) == val->items[i].len) &&
!strncmp(sel_item->str, val->value + val->items[i].pos, val->items[i].len))
return 1;
}
}
return 0;
}
static int _cmp_field_string_list(struct dm_report *rh __attribute__((unused)),
uint32_t field_num, const char *field_id,
const struct str_list_sort_value *val,
struct field_selection *fs)
{
const struct selection_str_list *sel = fs->value->v.l;
int subset, r;
switch (sel->type & SEL_LIST_MASK) {
case SEL_LIST_LS:
subset = 0;
break;
case SEL_LIST_SUBSET_LS:
subset = 1;
break;
default:
log_error(INTERNAL_ERROR "_cmp_field_string_list: unknown list type");
return 0;
}
switch (sel->type & SEL_MASK) {
case SEL_AND:
r = subset ? _cmp_field_string_list_subset_all(val, sel)
: _cmp_field_string_list_strict_all(val, sel);
break;
case SEL_OR:
r = _cmp_field_string_list_any(val, sel);
break;
default:
log_error(INTERNAL_ERROR "_cmp_field_string_list: unsupported string "
"list type found, expecting either AND or OR list for "
"selection field %s", field_id);
return 0;
}
return fs->flags & FLD_CMP_NOT ? !r : r;
}
static int _cmp_field_regex(const char *s, struct field_selection *fs)
{
int match = dm_regex_match(fs->value->v.r, s) >= 0;
return fs->flags & FLD_CMP_NOT ? !match : match;
}
static int _compare_selection_field(struct dm_report *rh,
struct dm_report_field *f,
struct field_selection *fs)
{
const struct dm_report_field_type *fields = f->props->implicit ? _implicit_report_fields
: rh->fields;
const char *field_id = fields[f->props->field_num].id;
int r = 0;
if (!f->sort_value) {
log_error("_compare_selection_field: field without value :%d",
f->props->field_num);
return 0;
}
if (fs->flags & FLD_CMP_REGEX)
r = _cmp_field_regex((const char *) f->sort_value, fs);
else {
switch(f->props->flags & DM_REPORT_FIELD_TYPE_MASK) {
case DM_REPORT_FIELD_TYPE_PERCENT:
/*
* Check against real percent values only.
* That means DM_PERCENT_0 <= percent <= DM_PERCENT_100.
*/
if (*(const uint64_t *) f->sort_value > DM_PERCENT_100)
return 0;
/* fall through */
case DM_REPORT_FIELD_TYPE_NUMBER:
r = _cmp_field_int(rh, f->props->field_num, field_id, *(const uint64_t *) f->sort_value, fs);
break;
case DM_REPORT_FIELD_TYPE_SIZE:
r = _cmp_field_double(rh, f->props->field_num, field_id, *(const double *) f->sort_value, fs);
break;
case DM_REPORT_FIELD_TYPE_STRING:
r = _cmp_field_string(rh, f->props->field_num, field_id, (const char *) f->sort_value, fs);
break;
case DM_REPORT_FIELD_TYPE_STRING_LIST:
r = _cmp_field_string_list(rh, f->props->field_num, field_id, (const struct str_list_sort_value *) f->sort_value, fs);
break;
case DM_REPORT_FIELD_TYPE_TIME:
r = _cmp_field_time(rh, f->props->field_num, field_id, *(const time_t *) f->sort_value, fs);
break;
default:
log_error(INTERNAL_ERROR "_compare_selection_field: unknown field type for field %s", field_id);
}
}
return r;
}
static int _check_selection(struct dm_report *rh, struct selection_node *sn,
struct dm_list *fields)
{
int r;
struct selection_node *iter_n;
struct dm_report_field *f;
switch (sn->type & SEL_MASK) {
case SEL_ITEM:
r = 1;
dm_list_iterate_items(f, fields) {
if (sn->selection.item->fp != f->props)
continue;
if (!_compare_selection_field(rh, f, sn->selection.item))
r = 0;
}
break;
case SEL_OR:
r = 0;
dm_list_iterate_items(iter_n, &sn->selection.set)
if ((r |= _check_selection(rh, iter_n, fields)))
break;
break;
case SEL_AND:
r = 1;
dm_list_iterate_items(iter_n, &sn->selection.set)
if (!(r &= _check_selection(rh, iter_n, fields)))
break;
break;
default:
log_error("Unsupported selection type");
return 0;
}
return (sn->type & SEL_MODIFIER_NOT) ? !r : r;
}
static int _check_report_selection(struct dm_report *rh, struct dm_list *fields)
{
if (!rh->selection || !rh->selection->selection_root)
return 1;
return _check_selection(rh, rh->selection->selection_root, fields);
}
static int _do_report_object(struct dm_report *rh, void *object, int do_output, int *selected)
{
const struct dm_report_field_type *fields;
struct field_properties *fp;
struct row *row = NULL;
struct dm_report_field *field;
void *data = NULL;
int r = 0;
if (!rh) {
log_error(INTERNAL_ERROR "_do_report_object: dm_report handler is NULL.");
return 0;
}
if (!do_output && !selected) {
log_error(INTERNAL_ERROR "_do_report_object: output not requested and "
"selected output variable is NULL too.");
return 0;
}
if (rh->flags & RH_ALREADY_REPORTED)
return 1;
if (!(row = dm_pool_zalloc(rh->mem, sizeof(*row)))) {
log_error("_do_report_object: struct row allocation failed");
return 0;
}
if (!rh->first_row)
rh->first_row = row;
row->rh = rh;
if ((rh->flags & RH_SORT_REQUIRED) &&
!(row->sort_fields =
dm_pool_zalloc(rh->mem, sizeof(struct dm_report_field *) *
rh->keys_count))) {
log_error("_do_report_object: "
"row sort value structure allocation failed");
goto out;
}
dm_list_init(&row->fields);
row->selected = 1;
/* For each field to be displayed, call its report_fn */
dm_list_iterate_items(fp, &rh->field_props) {
if (!(field = dm_pool_zalloc(rh->mem, sizeof(*field)))) {
log_error("_do_report_object: "
"struct dm_report_field allocation failed");
goto out;
}
if (fp->implicit) {
fields = _implicit_report_fields;
if (!strcmp(fields[fp->field_num].id, SPECIAL_FIELD_SELECTED_ID))
row->field_sel_status = field;
} else
fields = rh->fields;
field->props = fp;
data = fp->implicit ? _report_get_implicit_field_data(rh, fp, row)
: _report_get_field_data(rh, fp, object);
if (!data) {
log_error("_do_report_object: "
"no data assigned to field %s",
fields[fp->field_num].id);
goto out;
}
if (!fields[fp->field_num].report_fn(rh, rh->mem,
field, data,
rh->private)) {
log_error("_do_report_object: "
"report function failed for field %s",
fields[fp->field_num].id);
goto out;
}
dm_list_add(&row->fields, &field->list);
}
r = 1;
if (!_check_report_selection(rh, &row->fields)) {
row->selected = 0;
/*
* If the row is not selected, we still keep it for output if either:
* - we're displaying special "selected" field in the row,
* - or the report is supposed to be on output multiple times
* where each output can have a new selection defined.
*/
if (!row->field_sel_status && !(rh->flags & DM_REPORT_OUTPUT_MULTIPLE_TIMES))
goto out;
if (row->field_sel_status) {
/*
* If field with id "selected" is reported,
* report the row although it does not pass
* the selection criteria.
* The "selected" field reports the result
* of the selection.
*/
_implicit_report_fields[row->field_sel_status->props->field_num].report_fn(rh,
rh->mem, row->field_sel_status, row, rh->private);
/*
* If the "selected" field is not displayed, e.g.
* because it is part of the sort field list,
* skip the display of the row as usual unless
* we plan to do the output multiple times.
*/
if ((row->field_sel_status->props->flags & FLD_HIDDEN) &&
!(rh->flags & DM_REPORT_OUTPUT_MULTIPLE_TIMES))
goto out;
}
}
if (!do_output)
goto out;
dm_list_add(&rh->rows, &row->list);
if (!(rh->flags & DM_REPORT_OUTPUT_BUFFERED))
return dm_report_output(rh);
out:
if (selected)
*selected = row->selected;
if (!do_output || !r)
dm_pool_free(rh->mem, row);
return r;
}
static int _do_report_compact_fields(struct dm_report *rh, int global)
{
struct dm_report_field *field;
struct field_properties *fp;
struct row *row;
if (!rh) {
log_error("dm_report_enable_compact_output: dm report handler is NULL.");
return 0;
}
if (!(rh->flags & DM_REPORT_OUTPUT_BUFFERED) ||
dm_list_empty(&rh->rows))
return 1;
/*
* At first, mark all fields with FLD_HIDDEN flag.
* Also, mark field with FLD_COMPACTED flag, but only
* the ones that didn't have FLD_HIDDEN set before.
* This prevents losing the original FLD_HIDDEN flag
* in next step...
*/
dm_list_iterate_items(fp, &rh->field_props) {
if (fp->flags & FLD_HIDDEN)
continue;
if (global || (fp->flags & FLD_COMPACT_ONE))
fp->flags |= (FLD_COMPACTED | FLD_HIDDEN);
}
/*
* ...check each field in a row and if its report value
* is not empty, drop the FLD_COMPACTED and FLD_HIDDEN
* flag if FLD_COMPACTED flag is set. It's important
* to keep FLD_HIDDEN flag for the fields that were
* already marked with FLD_HIDDEN before - these don't
* have FLD_COMPACTED set - check this condition!
*/
dm_list_iterate_items(row, &rh->rows) {
dm_list_iterate_items(field, &row->fields) {
if ((field->report_string && *field->report_string) &&
field->props->flags & FLD_COMPACTED)
field->props->flags &= ~(FLD_COMPACTED | FLD_HIDDEN);
}
}
/*
* The fields left with FLD_COMPACTED and FLD_HIDDEN flag are
* the ones which have blank value in all rows. The FLD_HIDDEN
* will cause such field to not be reported on output at all.
*/
return 1;
}
int dm_report_compact_fields(struct dm_report *rh)
{
return _do_report_compact_fields(rh, 1);
}
static int _field_to_compact_match(struct dm_report *rh, const char *field, size_t flen)
{
struct field_properties *fp;
uint32_t f;
int implicit;
if ((_get_field(rh, field, flen, &f, &implicit))) {
dm_list_iterate_items(fp, &rh->field_props) {
if ((fp->implicit == implicit) && (fp->field_num == f)) {
fp->flags |= FLD_COMPACT_ONE;
break;
}
}
return 1;
}
return 0;
}
static int _parse_fields_to_compact(struct dm_report *rh, const char *fields)
{
const char *ws; /* Word start */
const char *we = fields; /* Word end */
if (!fields)
return 1;
while (*we) {
while (*we && *we == ',')
we++;
ws = we;
while (*we && *we != ',')
we++;
if (!_field_to_compact_match(rh, ws, (size_t) (we - ws))) {
log_error("dm_report: Unrecognized field: %.*s", (int) (we - ws), ws);
return 0;
}
}
return 1;
}
int dm_report_compact_given_fields(struct dm_report *rh, const char *fields)
{
if (!_parse_fields_to_compact(rh, fields))
return_0;
return _do_report_compact_fields(rh, 0);
}
int dm_report_object(struct dm_report *rh, void *object)
{
return _do_report_object(rh, object, 1, NULL);
}
int dm_report_object_is_selected(struct dm_report *rh, void *object, int do_output, int *selected)
{
return _do_report_object(rh, object, do_output, selected);
}
/*
* Selection parsing
*/
/*
* Other tokens (FIELD, VALUE, STRING, NUMBER, REGEX)
* FIELD := <strings of alphabet, number and '_'>
* VALUE := NUMBER | STRING
* REGEX := <strings quoted by '"', '\'', '(', '{', '[' or unquoted>
* NUMBER := <strings of [0-9]> (because sort_value is unsigned)
* STRING := <strings quoted by '"', '\'' or unquoted>
*/
static const char * _skip_space(const char *s)
{
while (*s && isspace(*s))
s++;
return s;
}
static int _tok_op(struct op_def *t, const char *s, const char **end,
uint32_t expect)
{
size_t len;
s = _skip_space(s);
for (; t->string; t++) {
if (expect && !(t->flags & expect))
continue;
len = strlen(t->string);
if (!strncmp(s, t->string, len)) {
if (end)
*end = s + len;
return t->flags;
}
}
if (end)
*end = s;
return 0;
}
static int _tok_op_log(const char *s, const char **end, uint32_t expect)
{
return _tok_op(_op_log, s, end, expect);
}
static int _tok_op_cmp(const char *s, const char **end)
{
return _tok_op(_op_cmp, s, end, 0);
}
static char _get_and_skip_quote_char(char const **s)
{
char c = 0;
if (**s == '"' || **s == '\'') {
c = **s;
(*s)++;
}
return c;
}
/*
*
* Input:
* s - a pointer to the parsed string
* Output:
* begin - a pointer to the beginning of the token
* end - a pointer to the end of the token + 1
* or undefined if return value is NULL
* return value - a starting point of the next parsing or
* NULL if 's' doesn't match with token type
* (the parsing should be terminated)
*/
static const char *_tok_value_number(const char *s,
const char **begin, const char **end)
{
int is_float = 0;
*begin = s;
while ((!is_float && (*s == '.') && ++is_float) || isdigit(*s))
s++;
*end = s;
if (*begin == *end)
return NULL;
return s;
}
/*
* Input:
* s - a pointer to the parsed string
* endchar - terminating character
* end_op_flags - terminating operator flags (see _op_log)
* (if endchar is non-zero then endflags is ignored)
* Output:
* begin - a pointer to the beginning of the token
* end - a pointer to the end of the token + 1
* end_op_flag_hit - the flag from endflags hit during parsing
* return value - a starting point of the next parsing
*/
static const char *_tok_value_string(const char *s,
const char **begin, const char **end,
const char endchar, uint32_t end_op_flags,
uint32_t *end_op_flag_hit)
{
uint32_t flag_hit = 0;
*begin = s;
/*
* If endchar is defined, scan the string till
* the endchar or the end of string is hit.
* This is in case the string is quoted and we
* know exact character that is the stopper.
*/
if (endchar) {
while (*s && *s != endchar)
s++;
if (*s != endchar) {
log_error("Missing end quote.");
return NULL;
}
*end = s;
s++;
} else {
/*
* If endchar is not defined then endchar is/are the
* operator/s as defined by 'endflags' arg or space char.
* This is in case the string is not quoted and
* we don't know which character is the exact stopper.
*/
while (*s) {
if ((flag_hit = _tok_op(_op_log, s, NULL, end_op_flags)) || *s == ' ')
break;
s++;
}
*end = s;
/*
* If we hit one of the strings as defined by 'endflags'
* and if 'endflag_hit' arg is provided, save the exact
* string flag that was hit.
*/
if (end_op_flag_hit)
*end_op_flag_hit = flag_hit;
}
return s;
}
static const char *_reserved_name(struct dm_report *rh,
const struct dm_report_reserved_value *reserved,
const struct dm_report_field_reserved_value *frv,
uint32_t field_num, const char *s, size_t len)
{
dm_report_reserved_handler handler;
const char *canonical_name = NULL;
const char **name;
char *tmp_s;
char c;
int r;
name = reserved->names;
while (*name) {
if ((strlen(*name) == len) && !strncmp(*name, s, len))
return *name;
name++;
}
if (reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_FUZZY_NAMES) {
handler = (dm_report_reserved_handler) (frv ? frv->value : reserved->value);
c = s[len];
tmp_s = (char *) s;
tmp_s[len] = '\0';
if ((r = handler(rh, rh->selection->mem, field_num,
DM_REPORT_RESERVED_PARSE_FUZZY_NAME,
tmp_s, (const void **) &canonical_name)) <= 0) {
if (r == -1)
log_error(INTERNAL_ERROR "%s reserved value handler for field %s has missing "
"implementation of DM_REPORT_RESERVED_PARSE_FUZZY_NAME action",
(reserved->type & DM_REPORT_FIELD_TYPE_MASK) ? "type-specific" : "field-specific",
rh->fields[field_num].id);
else
log_error("Error occured while processing %s reserved value handler for field %s",
(reserved->type & DM_REPORT_FIELD_TYPE_MASK) ? "type-specific" : "field-specific",
rh->fields[field_num].id);
}
tmp_s[len] = c;
if (r && canonical_name)
return canonical_name;
}
return NULL;
}
/*
* Used to replace a string representation of the reserved value
* found in selection with the exact reserved value of certain type.
*/
static const char *_get_reserved(struct dm_report *rh, unsigned type,
uint32_t field_num, int implicit,
const char *s, const char **begin, const char **end,
struct reserved_value_wrapper *rvw)
{
const struct dm_report_reserved_value *iter = implicit ? NULL : rh->reserved_values;
const struct dm_report_field_reserved_value *frv;
const char *tmp_begin = NULL, *tmp_end = NULL, *tmp_s = s;
const char *name = NULL;
char c;
rvw->reserved = NULL;
if (!iter)
return s;
c = _get_and_skip_quote_char(&tmp_s);
if (!(tmp_s = _tok_value_string(tmp_s, &tmp_begin, &tmp_end, c, SEL_AND | SEL_OR | SEL_PRECEDENCE_PE, NULL)))
return s;
while (iter->value) {
if (!(iter->type & DM_REPORT_FIELD_TYPE_MASK)) {
/* DM_REPORT_FIELD_TYPE_NONE - per-field reserved value */
frv = (const struct dm_report_field_reserved_value *) iter->value;
if ((frv->field_num == field_num) && (name = _reserved_name(rh, iter, frv, field_num,
tmp_begin, tmp_end - tmp_begin)))
break;
} else if (iter->type & type) {
/* DM_REPORT_FIELD_TYPE_* - per-type reserved value */
if ((name = _reserved_name(rh, iter, NULL, field_num,
tmp_begin, tmp_end - tmp_begin)))
break;
}
iter++;
}
if (name) {
/* found! */
*begin = tmp_begin;
*end = tmp_end;
s = tmp_s;
rvw->reserved = iter;
rvw->matched_name = name;
}
return s;
}
float dm_percent_to_float(dm_percent_t percent)
{
/* Add 0.f to prevent returning -0.00 */
return (float) percent / DM_PERCENT_1 + 0.f;
}
float dm_percent_to_round_float(dm_percent_t percent, unsigned digits)
{
static const float power10[] = {
1.f, .1f, .01f, .001f, .0001f, .00001f, .000001f,
.0000001f, .00000001f, .000000001f,
.0000000001f
};
float r;
float f = dm_percent_to_float(percent);
if (digits >= DM_ARRAY_SIZE(power10))
digits = DM_ARRAY_SIZE(power10) - 1; /* no better precision */
r = DM_PERCENT_1 * power10[digits];
if ((percent < r) && (percent > DM_PERCENT_0))
f = power10[digits];
else if ((percent > (DM_PERCENT_100 - r)) && (percent < DM_PERCENT_100))
f = (float) (DM_PERCENT_100 - r) / DM_PERCENT_1;
return f;
}
dm_percent_t dm_make_percent(uint64_t numerator, uint64_t denominator)
{
dm_percent_t percent;
if (!denominator)
return DM_PERCENT_100; /* FIXME? */
if (!numerator)
return DM_PERCENT_0;
if (numerator == denominator)
return DM_PERCENT_100;
switch (percent = DM_PERCENT_100 * ((double) numerator / (double) denominator)) {
case DM_PERCENT_100:
return DM_PERCENT_100 - 1;
case DM_PERCENT_0:
return DM_PERCENT_0 + 1;
default:
return percent;
}
}
int dm_report_value_cache_set(struct dm_report *rh, const char *name, const void *data)
{
if (!rh->value_cache && (!(rh->value_cache = dm_hash_create(63)))) {
log_error("Failed to create cache for values used during reporting.");
return 0;
}
return dm_hash_insert(rh->value_cache, name, (void *) data);
}
const void *dm_report_value_cache_get(struct dm_report *rh, const char *name)
{
return (rh->value_cache) ? dm_hash_lookup(rh->value_cache, name) : NULL;
}
/*
* Used to check whether the reserved_values definition passed to
* dm_report_init_with_selection contains only supported reserved value types.
*/
static int _check_reserved_values_supported(const struct dm_report_field_type fields[],
const struct dm_report_reserved_value reserved_values[])
{
const struct dm_report_reserved_value *iter;
const struct dm_report_field_reserved_value *field_res;
const struct dm_report_field_type *field;
static uint32_t supported_reserved_types = DM_REPORT_FIELD_TYPE_NUMBER |
DM_REPORT_FIELD_TYPE_SIZE |
DM_REPORT_FIELD_TYPE_PERCENT |
DM_REPORT_FIELD_TYPE_STRING |
DM_REPORT_FIELD_TYPE_TIME;
static uint32_t supported_reserved_types_with_range = DM_REPORT_FIELD_RESERVED_VALUE_RANGE |
DM_REPORT_FIELD_TYPE_NUMBER |
DM_REPORT_FIELD_TYPE_SIZE |
DM_REPORT_FIELD_TYPE_PERCENT |
DM_REPORT_FIELD_TYPE_TIME;
if (!reserved_values)
return 1;
iter = reserved_values;
while (iter->value) {
if (iter->type & DM_REPORT_FIELD_TYPE_MASK) {
if (!(iter->type & supported_reserved_types) ||
((iter->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE) &&
!(iter->type & supported_reserved_types_with_range))) {
log_error(INTERNAL_ERROR "_check_reserved_values_supported: "
"global reserved value for type 0x%x not supported",
iter->type);
return 0;
}
} else {
field_res = (const struct dm_report_field_reserved_value *) iter->value;
field = &fields[field_res->field_num];
if (!(field->flags & supported_reserved_types) ||
((iter->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE) &&
!(iter->type & supported_reserved_types_with_range))) {
log_error(INTERNAL_ERROR "_check_reserved_values_supported: "
"field-specific reserved value of type 0x%x for "
"field %s not supported",
field->flags & DM_REPORT_FIELD_TYPE_MASK, field->id);
return 0;
}
}
iter++;
}
return 1;
}
/*
* Input:
* ft - field type for which the value is parsed
* s - a pointer to the parsed string
* Output:
* begin - a pointer to the beginning of the token
* end - a pointer to the end of the token + 1
* flags - parsing flags
*/
static const char *_tok_value_regex(struct dm_report *rh,
const struct dm_report_field_type *ft,
const char *s, const char **begin,
const char **end, uint32_t *flags,
struct reserved_value_wrapper *rvw)
{
char c;
rvw->reserved = NULL;
s = _skip_space(s);
if (!*s) {
log_error("Regular expression expected for selection field %s", ft->id);
return NULL;
}
switch (*s) {
case '(': c = ')'; break;
case '{': c = '}'; break;
case '[': c = ']'; break;
case '"': /* fall through */
case '\'': c = *s; break;
default: c = 0;
}
if (!(s = _tok_value_string(c ? s + 1 : s, begin, end, c, SEL_AND | SEL_OR | SEL_PRECEDENCE_PE, NULL))) {
log_error("Failed to parse regex value for selection field %s.", ft->id);
return NULL;
}
*flags |= DM_REPORT_FIELD_TYPE_STRING;
return s;
}
static int _str_list_item_cmp(const void *a, const void *b)
{
const struct dm_str_list * const *item_a = (const struct dm_str_list * const *) a;
const struct dm_str_list * const *item_b = (const struct dm_str_list * const *) b;
return strcmp((*item_a)->str, (*item_b)->str);
}
static int _add_item_to_string_list(struct dm_pool *mem, const char *begin,
const char *end, struct dm_list *list)
{
struct dm_str_list *item;
if (!(item = dm_pool_zalloc(mem, sizeof(*item))) ||
!(item->str = begin == end ? "" : dm_pool_strndup(mem, begin, end - begin))) {
log_error("_add_item_to_string_list: memory allocation failed for string list item");
return 0;
}
dm_list_add(list, &item->list);
return 1;
}
/*
* Input:
* ft - field type for which the value is parsed
* mem - memory pool to allocate from
* s - a pointer to the parsed string
* Output:
* begin - a pointer to the beginning of the token (whole list)
* end - a pointer to the end of the token + 1 (whole list)
* sel_str_list - the list of strings parsed
*/
static const char *_tok_value_string_list(const struct dm_report_field_type *ft,
struct dm_pool *mem, const char *s,
const char **begin, const char **end,
struct selection_str_list **sel_str_list)
{
static const char _str_list_item_parsing_failed[] = "Failed to parse string list value "
"for selection field %s.";
struct selection_str_list *ssl = NULL;
struct dm_str_list *item;
const char *begin_item = NULL, *end_item = NULL, *tmp;
uint32_t op_flags, end_op_flag_expected, end_op_flag_hit = 0;
struct dm_str_list **arr;
size_t list_size;
unsigned int i;
int list_end = 0;
char c;
if (!(ssl = dm_pool_alloc(mem, sizeof(*ssl)))) {
log_error("_tok_value_string_list: memory allocation failed for selection list");
goto bad;
}
dm_list_init(&ssl->str_list.list);
ssl->type = 0;
*begin = s;
if (!(op_flags = _tok_op_log(s, &tmp, SEL_LIST_LS | SEL_LIST_SUBSET_LS))) {
/* Only one item - SEL_LIST_{SUBSET_}LS and SEL_LIST_{SUBSET_}LE not used */
c = _get_and_skip_quote_char(&s);
if (!(s = _tok_value_string(s, &begin_item, &end_item, c, SEL_AND | SEL_OR | SEL_PRECEDENCE_PE, NULL))) {
log_error(_str_list_item_parsing_failed, ft->id);
goto bad;
}
if (!_add_item_to_string_list(mem, begin_item, end_item, &ssl->str_list.list))
goto_bad;
ssl->type = SEL_OR | SEL_LIST_LS;
goto out;
}
/* More than one item - items enclosed in SEL_LIST_LS and SEL_LIST_LE
* or SEL_LIST_SUBSET_LS and SEL_LIST_SUBSET_LE.
* Each element is terminated by AND or OR operator or 'list end'.
* The first operator hit is then the one allowed for the whole list,
* no mixing allowed!
*/
/* Are we using [] or {} for the list? */
end_op_flag_expected = (op_flags == SEL_LIST_LS) ? SEL_LIST_LE : SEL_LIST_SUBSET_LE;
op_flags = SEL_LIST_LE | SEL_LIST_SUBSET_LE | SEL_AND | SEL_OR;
s++;
while (*s) {
s = _skip_space(s);
c = _get_and_skip_quote_char(&s);
if (!(s = _tok_value_string(s, &begin_item, &end_item, c, op_flags, NULL))) {
log_error(_str_list_item_parsing_failed, ft->id);
goto bad;
}
s = _skip_space(s);
if (!(end_op_flag_hit = _tok_op_log(s, &tmp, op_flags))) {
log_error("Invalid operator in selection list.");
goto bad;
}
if (end_op_flag_hit & (SEL_LIST_LE | SEL_LIST_SUBSET_LE)) {
list_end = 1;
if (end_op_flag_hit != end_op_flag_expected) {
for (i = 0; _op_log[i].string; i++)
if (_op_log[i].flags == end_op_flag_expected)
break;
log_error("List ended with incorrect character, "
"expecting \'%s\'.", _op_log[i].string);
goto bad;
}
}
if (ssl->type) {
if (!list_end && !(ssl->type & end_op_flag_hit)) {
log_error("Only one type of logical operator allowed "
"in selection list at a time.");
goto bad;
}
} else {
if (list_end)
ssl->type = end_op_flag_expected == SEL_LIST_LE ? SEL_AND : SEL_OR;
else
ssl->type = end_op_flag_hit;
}
if (!_add_item_to_string_list(mem, begin_item, end_item, &ssl->str_list.list))
goto_bad;
s = tmp;
if (list_end)
break;
}
if (!(end_op_flag_hit & (SEL_LIST_LE | SEL_LIST_SUBSET_LE))) {
log_error("Missing list end for selection field %s", ft->id);
goto bad;
}
/* Store information whether [] or {} was used. */
if (end_op_flag_expected == SEL_LIST_LE)
ssl->type |= SEL_LIST_LS;
else
ssl->type |= SEL_LIST_SUBSET_LS;
/* Sort the list. */
if (!(list_size = dm_list_size(&ssl->str_list.list))) {
log_error(INTERNAL_ERROR "_tok_value_string_list: list has no items");
goto bad;
} else if (list_size == 1)
goto out;
if (!(arr = malloc(sizeof(item) * list_size))) {
log_error("_tok_value_string_list: memory allocation failed for sort array");
goto bad;
}
i = 0;
dm_list_iterate_items(item, &ssl->str_list.list)
arr[i++] = item;
qsort(arr, list_size, sizeof(item), _str_list_item_cmp);
dm_list_init(&ssl->str_list.list);
for (i = 0; i < list_size; i++)
dm_list_add(&ssl->str_list.list, &arr[i]->list);
free(arr);
out:
*end = s;
if (sel_str_list)
*sel_str_list = ssl;
return s;
bad:
*end = s;
if (ssl)
dm_pool_free(mem, ssl);
if (sel_str_list)
*sel_str_list = NULL;
return s;
}
struct time_value {
int range;
time_t t1;
time_t t2;
};
static const char *_out_of_range_msg = "Field selection value %s out of supported range for field %s.";
/*
* Standard formatted date and time - ISO8601.
*
* date time timezone
*
* date:
* YYYY-MM-DD (or shortly YYYYMMDD)
* YYYY-MM (shortly YYYYMM), auto DD=1
* YYYY, auto MM=01 and DD=01
*
* time:
* hh:mm:ss (or shortly hhmmss)
* hh:mm (or shortly hhmm), auto ss=0
* hh (or shortly hh), auto mm=0, auto ss=0
*
* timezone:
* +hh:mm or -hh:mm (or shortly +hhmm or -hhmm)
* +hh or -hh
*/
#define DELIM_DATE '-'
#define DELIM_TIME ':'
static int _days_in_month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
static int _is_leap_year(long year)
{
return (((year % 4==0) && (year % 100 != 0)) || (year % 400 == 0));
}
static int _get_days_in_month(long month, long year)
{
return (month == 2 && _is_leap_year(year)) ? _days_in_month[month-1] + 1
: _days_in_month[month-1];
}
typedef enum {
RANGE_NONE,
RANGE_SECOND,
RANGE_MINUTE,
RANGE_HOUR,
RANGE_DAY,
RANGE_MONTH,
RANGE_YEAR
} time_range_t;
static char *_get_date(char *str, struct tm *tm, time_range_t *range)
{
static const char incorrect_date_format_msg[] = "Incorrect date format.";
time_range_t tmp_range = RANGE_NONE;
long n1, n2 = -1, n3 = -1;
char *s = str, *end;
size_t len = 0;
if (!isdigit(*s))
/* we need a year at least */
return NULL;
n1 = strtol(s, &end, 10);
if (*end == DELIM_DATE) {
len += (4 - (end - s)); /* diff in length from standard YYYY */
s = end + 1;
if (isdigit(*s)) {
n2 = strtol(s, &end, 10);
len += (2 - (end - s)); /* diff in length from standard MM */
if (*end == DELIM_DATE) {
s = end + 1;
n3 = strtol(s, &end, 10);
len += (2 - (end - s)); /* diff in length from standard DD */
}
}
}
len = len + end - str;
/* variations from standard YYYY-MM-DD */
if (n3 == -1) {
if (n2 == -1) {
if (len == 4) {
/* YYYY */
tmp_range = RANGE_YEAR;
n3 = n2 = 1;
} else if (len == 6) {
/* YYYYMM */
tmp_range = RANGE_MONTH;
n3 = 1;
n2 = n1 % 100;
n1 = n1 / 100;
} else if (len == 8) {
tmp_range = RANGE_DAY;
/* YYYYMMDD */
n3 = n1 % 100;
n2 = (n1 / 100) % 100;
n1 = n1 / 10000;
} else {
log_error(incorrect_date_format_msg);
return NULL;
}
} else {
if (len == 7) {
tmp_range = RANGE_MONTH;
/* YYYY-MM */
n3 = 1;
} else {
log_error(incorrect_date_format_msg);
return NULL;
}
}
}
if (n2 < 1 || n2 > 12) {
log_error("Specified month out of range.");
return NULL;
}
if (n3 < 1 || n3 > _get_days_in_month(n2, n1)) {
log_error("Specified day out of range.");
return NULL;
}
if (tmp_range == RANGE_NONE)
tmp_range = RANGE_DAY;
tm->tm_year = n1 - 1900;
tm->tm_mon = n2 - 1;
tm->tm_mday = n3;
*range = tmp_range;
return (char *) _skip_space(end);
}
static char *_get_time(char *str, struct tm *tm, time_range_t *range)
{
static const char incorrect_time_format_msg[] = "Incorrect time format.";
time_range_t tmp_range = RANGE_NONE;
long n1, n2 = -1, n3 = -1;
char *s = str, *end;
size_t len = 0;
if (!isdigit(*s)) {
/* time is not compulsory */
tm->tm_hour = tm->tm_min = tm->tm_sec = 0;
return (char *) _skip_space(s);
}
n1 = strtol(s, &end, 10);
if (*end == DELIM_TIME) {
len += (2 - (end - s)); /* diff in length from standard HH */
s = end + 1;
if (isdigit(*s)) {
n2 = strtol(s, &end, 10);
len += (2 - (end - s)); /* diff in length from standard MM */
if (*end == DELIM_TIME) {
s = end + 1;
n3 = strtol(s, &end, 10);
len += (2 - (end - s)); /* diff in length from standard SS */
}
}
}
len = len + end - str;
/* variations from standard HH:MM:SS */
if (n3 == -1) {
if (n2 == -1) {
if (len == 2) {
/* HH */
tmp_range = RANGE_HOUR;
n3 = n2 = 0;
} else if (len == 4) {
/* HHMM */
tmp_range = RANGE_MINUTE;
n3 = 0;
n2 = n1 % 100;
n1 = n1 / 100;
} else if (len == 6) {
/* HHMMSS */
tmp_range = RANGE_SECOND;
n3 = n1 % 100;
n2 = (n1 / 100) % 100;
n1 = n1 / 10000;
} else {
log_error(incorrect_time_format_msg);
return NULL;
}
} else {
if (len == 5) {
/* HH:MM */
tmp_range = RANGE_MINUTE;
n3 = 0;
} else {
log_error(incorrect_time_format_msg);
return NULL;
}
}
}
if (n1 < 0 || n1 > 23) {
log_error("Specified hours out of range.");
return NULL;
}
if (n2 < 0 || n2 > 60) {
log_error("Specified minutes out of range.");
return NULL;
}
if (n3 < 0 || n3 > 60) {
log_error("Specified seconds out of range.");
return NULL;
}
/* Just time without exact date is incomplete! */
if (*range != RANGE_DAY) {
log_error("Full date specification needed.");
return NULL;
}
tm->tm_hour = n1;
tm->tm_min = n2;
tm->tm_sec = n3;
*range = tmp_range;
return (char *) _skip_space(end);
}
/* The offset is always an absolute offset against GMT! */
static char *_get_tz(char *str, int *tz_supplied, int *offset)
{
long n1, n2 = -1;
char *s = str, *end;
int sign = 1; /* +HH:MM by default */
size_t len = 0;
*tz_supplied = 0;
*offset = 0;
if (!isdigit(*s)) {
if (*s == '+') {
sign = 1;
s = s + 1;
} else if (*s == '-') {
sign = -1;
s = s + 1;
} else
return (char *) _skip_space(s);
}
n1 = strtol(s, &end, 10);
if (*end == DELIM_TIME) {
len = (2 - (end - s)); /* diff in length from standard HH */
s = end + 1;
if (isdigit(*s)) {
n2 = strtol(s, &end, 10);
len = (2 - (end - s)); /* diff in length from standard MM */
}
}
len = len + end - s;
/* variations from standard HH:MM */
if (n2 == -1) {
if (len == 2) {
/* HH */
n2 = 0;
} else if (len == 4) {
/* HHMM */
n2 = n1 % 100;
n1 = n1 / 100;
} else
return NULL;
}
if (n2 < 0 || n2 > 60)
return NULL;
if (n1 < 0 || n1 > 14)
return NULL;
/* timezone offset in seconds */
*offset = sign * ((n1 * 3600) + (n2 * 60));
*tz_supplied = 1;
return (char *) _skip_space(end);
}
static int _local_tz_offset(time_t t_local)
{
struct tm tm_gmt;
time_t t_gmt;
gmtime_r(&t_local, &tm_gmt);
t_gmt = mktime(&tm_gmt);
/*
* gmtime returns time that is adjusted
* for DST.Subtract this adjustment back
* to give us proper *absolute* offset
* for our local timezone.
*/
if (tm_gmt.tm_isdst)
t_gmt -= 3600;
return t_local - t_gmt;
}
static void _get_final_time(time_range_t range, struct tm *tm,
int tz_supplied, int offset,
struct time_value *tval)
{
struct tm tm_up = *tm;
switch (range) {
case RANGE_SECOND:
if (tm_up.tm_sec < 59) {
tm_up.tm_sec += 1;
break;
}
/* fall through */
case RANGE_MINUTE:
if (tm_up.tm_min < 59) {
tm_up.tm_min += 1;
break;
}
/* fall through */
case RANGE_HOUR:
if (tm_up.tm_hour < 23) {
tm_up.tm_hour += 1;
break;
}
/* fall through */
case RANGE_DAY:
if (tm_up.tm_mday < _get_days_in_month(tm_up.tm_mon, tm_up.tm_year)) {
tm_up.tm_mday += 1;
break;
}
/* fall through */
case RANGE_MONTH:
if (tm_up.tm_mon < 11) {
tm_up.tm_mon += 1;
break;
}
/* fall through */
case RANGE_YEAR:
tm_up.tm_year += 1;
break;
case RANGE_NONE:
/* nothing to do here */
break;
}
tval->range = (range != RANGE_NONE);
tval->t1 = mktime(tm);
tval->t2 = mktime(&tm_up) - 1;
if (tz_supplied) {
/*
* The 'offset' is with respect to the GMT.
* Calculate what the offset is with respect
* to our local timezone and adjust times
* so they represent time in our local timezone.
*/
offset -= _local_tz_offset(tval->t1);
tval->t1 -= offset;
tval->t2 -= offset;
}
}
static int _parse_formatted_date_time(char *str, struct time_value *tval)
{
time_range_t range = RANGE_NONE;
struct tm tm = {0};
int gmt_offset;
int tz_supplied;
tm.tm_year = tm.tm_mday = tm.tm_mon = -1;
tm.tm_hour = tm.tm_min = tm.tm_sec = -1;
tm.tm_isdst = tm.tm_wday = tm.tm_yday = -1;
if (!(str = _get_date(str, &tm, &range)))
return 0;
if (!(str = _get_time(str, &tm, &range)))
return 0;
if (!(str = _get_tz(str, &tz_supplied, &gmt_offset)))
return 0;
if (*str)
return 0;
_get_final_time(range, &tm, tz_supplied, gmt_offset, tval);
return 1;
}
static const char *_tok_value_time(const struct dm_report_field_type *ft,
struct dm_pool *mem, const char *s,
const char **begin, const char **end,
struct time_value *tval)
{
char *time_str = NULL;
const char *r = NULL;
uint64_t t;
char c;
s = _skip_space(s);
if (*s == '@') {
/* Absolute time value in number of seconds since epoch. */
if (!(s = _tok_value_number(s+1, begin, end)))
goto_out;
if (!(time_str = dm_pool_strndup(mem, *begin, *end - *begin))) {
log_error("_tok_value_time: dm_pool_strndup failed");
goto out;
}
errno = 0;
if (((t = strtoull(time_str, NULL, 10)) == ULLONG_MAX) && errno == ERANGE) {
log_error(_out_of_range_msg, time_str, ft->id);
goto out;
}
tval->range = 0;
tval->t1 = (time_t) t;
tval->t2 = 0;
r = s;
} else {
c = _get_and_skip_quote_char(&s);
if (!(s = _tok_value_string(s, begin, end, c, SEL_AND | SEL_OR | SEL_PRECEDENCE_PE, NULL)))
goto_out;
if (!(time_str = dm_pool_strndup(mem, *begin, *end - *begin))) {
log_error("tok_value_time: dm_pool_strndup failed");
goto out;
}
if (!_parse_formatted_date_time(time_str, tval))
goto_out;
r = s;
}
out:
if (time_str)
dm_pool_free(mem, time_str);
return r;
}
/*
* Input:
* ft - field type for which the value is parsed
* s - a pointer to the parsed string
* mem - memory pool to allocate from
* Output:
* begin - a pointer to the beginning of the token
* end - a pointer to the end of the token + 1
* flags - parsing flags
* custom - custom data specific to token type
* (e.g. size unit factor)
*/
static const char *_tok_value(struct dm_report *rh,
const struct dm_report_field_type *ft,
uint32_t field_num, int implicit,
const char *s,
const char **begin, const char **end,
uint32_t *flags,
struct reserved_value_wrapper *rvw,
struct dm_pool *mem, void *custom)
{
int expected_type = ft->flags & DM_REPORT_FIELD_TYPE_MASK;
struct selection_str_list **str_list;
struct time_value *tval;
uint64_t *factor;
const char *tmp;
char c;
s = _skip_space(s);
s = _get_reserved(rh, expected_type, field_num, implicit, s, begin, end, rvw);
if (rvw->reserved) {
/*
* FLD_CMP_NUMBER shares operators with FLD_CMP_TIME,
* so adjust flags here based on expected type.
*/
if (expected_type == DM_REPORT_FIELD_TYPE_TIME)
*flags &= ~FLD_CMP_NUMBER;
else if (expected_type == DM_REPORT_FIELD_TYPE_NUMBER)
*flags &= ~FLD_CMP_TIME;
*flags |= expected_type;
return s;
}
switch (expected_type) {
case DM_REPORT_FIELD_TYPE_STRING:
c = _get_and_skip_quote_char(&s);
if (!(s = _tok_value_string(s, begin, end, c, SEL_AND | SEL_OR | SEL_PRECEDENCE_PE, NULL))) {
log_error("Failed to parse string value "
"for selection field %s.", ft->id);
return NULL;
}
*flags |= DM_REPORT_FIELD_TYPE_STRING;
break;
case DM_REPORT_FIELD_TYPE_STRING_LIST:
if (!(str_list = (struct selection_str_list **) custom))
goto_bad;
s = _tok_value_string_list(ft, mem, s, begin, end, str_list);
if (!(*str_list)) {
log_error("Failed to parse string list value "
"for selection field %s.", ft->id);
return NULL;
}
*flags |= DM_REPORT_FIELD_TYPE_STRING_LIST;
break;
case DM_REPORT_FIELD_TYPE_NUMBER:
/* fall through */
case DM_REPORT_FIELD_TYPE_SIZE:
/* fall through */
case DM_REPORT_FIELD_TYPE_PERCENT:
if (!(s = _tok_value_number(s, begin, end))) {
log_error("Failed to parse numeric value "
"for selection field %s.", ft->id);
return NULL;
}
if (*s == DM_PERCENT_CHAR) {
s++;
c = DM_PERCENT_CHAR;
if (expected_type != DM_REPORT_FIELD_TYPE_PERCENT) {
log_error("Found percent value but %s value "
"expected for selection field %s.",
expected_type == DM_REPORT_FIELD_TYPE_NUMBER ?
"numeric" : "size", ft->id);
return NULL;
}
} else {
if (!(factor = (uint64_t *) custom))
goto_bad;
if ((*factor = dm_units_to_factor(s, &c, 0, &tmp))) {
s = tmp;
if (expected_type != DM_REPORT_FIELD_TYPE_SIZE) {
log_error("Found size unit specifier "
"but %s value expected for "
"selection field %s.",
expected_type == DM_REPORT_FIELD_TYPE_NUMBER ?
"numeric" : "percent", ft->id);
return NULL;
}
} else if (expected_type == DM_REPORT_FIELD_TYPE_SIZE) {
/*
* If size unit is not defined in the selection
* and the type expected is size, use use 'm'
* (1 MiB) for the unit by default. This is the
* same behaviour as seen in lvcreate -L <size>.
*/
*factor = 1024*1024;
}
}
*flags |= expected_type;
/*
* FLD_CMP_NUMBER shares operators with FLD_CMP_TIME,
* but we have NUMBER here, so remove FLD_CMP_TIME.
*/
*flags &= ~FLD_CMP_TIME;
break;
case DM_REPORT_FIELD_TYPE_TIME:
if (!(tval = (struct time_value *) custom))
goto_bad;
if (!(s = _tok_value_time(ft, mem, s, begin, end, tval))) {
log_error("Failed to parse time value "
"for selection field %s.", ft->id);
return NULL;
}
*flags |= DM_REPORT_FIELD_TYPE_TIME;
/*
* FLD_CMP_TIME shares operators with FLD_CMP_NUMBER,
* but we have TIME here, so remove FLD_CMP_NUMBER.
*/
*flags &= ~FLD_CMP_NUMBER;
break;
}
return s;
bad:
log_error(INTERNAL_ERROR "Forbidden NULL custom detected.");
return NULL;
}
/*
* Input:
* s - a pointer to the parsed string
* Output:
* begin - a pointer to the beginning of the token
* end - a pointer to the end of the token + 1
*/
static const char *_tok_field_name(const char *s,
const char **begin, const char **end)
{
char c;
s = _skip_space(s);
*begin = s;
while ((c = *s) &&
(isalnum(c) || c == '_' || c == '-'))
s++;
*end = s;
if (*begin == *end)
return NULL;
return s;
}
static int _get_reserved_value(struct dm_report *rh, uint32_t field_num,
struct reserved_value_wrapper *rvw)
{
const void *tmp_value;
dm_report_reserved_handler handler;
int r;
if (!rvw->reserved) {
rvw->value = NULL;
return 1;
}
if (rvw->reserved->type & DM_REPORT_FIELD_TYPE_MASK)
/* type reserved value */
tmp_value = rvw->reserved->value;
else
/* per-field reserved value */
tmp_value = ((const struct dm_report_field_reserved_value *) rvw->reserved->value)->value;
if (rvw->reserved->type & (DM_REPORT_FIELD_RESERVED_VALUE_DYNAMIC_VALUE | DM_REPORT_FIELD_RESERVED_VALUE_FUZZY_NAMES)) {
handler = (dm_report_reserved_handler) tmp_value;
if ((r = handler(rh, rh->selection->mem, field_num,
DM_REPORT_RESERVED_GET_DYNAMIC_VALUE,
rvw->matched_name, &tmp_value)) <= 0) {
if (r == -1)
log_error(INTERNAL_ERROR "%s reserved value handler for field %s has missing"
"implementation of DM_REPORT_RESERVED_GET_DYNAMIC_VALUE action",
(rvw->reserved->type) & DM_REPORT_FIELD_TYPE_MASK ? "type-specific" : "field-specific",
rh->fields[field_num].id);
else
log_error("Error occured while processing %s reserved value handler for field %s",
(rvw->reserved->type) & DM_REPORT_FIELD_TYPE_MASK ? "type-specific" : "field-specific",
rh->fields[field_num].id);
return 0;
}
}
rvw->value = tmp_value;
return 1;
}
static struct field_selection *_create_field_selection(struct dm_report *rh,
uint32_t field_num,
int implicit,
const char *v,
size_t len,
uint32_t flags,
struct reserved_value_wrapper *rvw,
void *custom)
{
static const char *_field_selection_value_alloc_failed_msg = "dm_report: struct field_selection_value allocation failed for selection field %s";
const struct dm_report_field_type *fields = implicit ? _implicit_report_fields
: rh->fields;
struct field_properties *fp, *found = NULL;
struct field_selection *fs;
const char *field_id;
struct time_value *tval;
uint64_t factor;
char *s;
dm_list_iterate_items(fp, &rh->field_props) {
if ((fp->implicit == implicit) && (fp->field_num == field_num)) {
found = fp;
break;
}
}
/* The field is neither used in display options nor sort keys. */
if (!found) {
if (rh->selection->add_new_fields) {
if (!(found = _add_field(rh, field_num, implicit, FLD_HIDDEN)))
return NULL;
rh->report_types |= fields[field_num].type;
} else {
log_error("Unable to create selection with field \'%s\' "
"which is not included in current report.",
implicit ? _implicit_report_fields[field_num].id
: rh->fields[field_num].id);
return NULL;
}
}
field_id = fields[found->field_num].id;
if (!(found->flags & flags & DM_REPORT_FIELD_TYPE_MASK)) {
log_error("dm_report: incompatible comparison "
"type for selection field %s", field_id);
return NULL;
}
/* set up selection */
if (!(fs = dm_pool_zalloc(rh->selection->mem, sizeof(struct field_selection)))) {
log_error("dm_report: struct field_selection "
"allocation failed for selection field %s", field_id);
return NULL;
}
if (!(fs->value = dm_pool_zalloc(rh->selection->mem, sizeof(struct field_selection_value)))) {
log_error(_field_selection_value_alloc_failed_msg, field_id);
goto error;
}
if (((rvw->reserved && (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)) ||
(((flags & DM_REPORT_FIELD_TYPE_MASK) == DM_REPORT_FIELD_TYPE_TIME) &&
custom && ((struct time_value *) custom)->range))
&&
!(fs->value->next = dm_pool_zalloc(rh->selection->mem, sizeof(struct field_selection_value)))) {
log_error(_field_selection_value_alloc_failed_msg, field_id);
goto error;
}
fs->fp = found;
fs->flags = flags;
if (!_get_reserved_value(rh, field_num, rvw)) {
log_error("dm_report: could not get reserved value "
"while processing selection field %s", field_id);
goto error;
}
/* store comparison operand */
if (flags & FLD_CMP_REGEX) {
/* REGEX */
if (!(s = malloc(len + 1))) {
log_error("dm_report: malloc failed to store "
"regex value for selection field %s", field_id);
goto error;
}
memcpy(s, v, len);
s[len] = '\0';
fs->value->v.r = dm_regex_create(rh->selection->mem, (const char * const *) &s, 1);
free(s);
if (!fs->value->v.r) {
log_error("dm_report: failed to create regex "
"matcher for selection field %s", field_id);
goto error;
}
} else {
/* STRING, NUMBER, SIZE, PERCENT, STRING_LIST, TIME */
if (!(s = dm_pool_strndup(rh->selection->mem, v, len))) {
log_error("dm_report: dm_pool_strndup for value "
"of selection field %s", field_id);
goto error;
}
switch (flags & DM_REPORT_FIELD_TYPE_MASK) {
case DM_REPORT_FIELD_TYPE_STRING:
if (rvw->value) {
fs->value->v.s = (const char *) rvw->value;
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.s = (((const char * const *) rvw->value)[1]);
dm_pool_free(rh->selection->mem, s);
} else {
fs->value->v.s = s;
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_STRING, fs->value->v.s, NULL)) {
log_error("String value %s found in selection is reserved.", fs->value->v.s);
goto error;
}
}
break;
case DM_REPORT_FIELD_TYPE_NUMBER:
if (rvw->value) {
fs->value->v.i = *(const uint64_t *) rvw->value;
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.i = (((const uint64_t *) rvw->value)[1]);
} else {
errno = 0;
if (((fs->value->v.i = strtoull(s, NULL, 10)) == ULLONG_MAX) &&
(errno == ERANGE)) {
log_error(_out_of_range_msg, s, field_id);
goto error;
}
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_NUMBER, &fs->value->v.i, NULL)) {
log_error("Numeric value %" PRIu64 " found in selection is reserved.", fs->value->v.i);
goto error;
}
}
dm_pool_free(rh->selection->mem, s);
break;
case DM_REPORT_FIELD_TYPE_SIZE:
if (rvw->value) {
fs->value->v.d = *(const double *) rvw->value;
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.d = (((const double *) rvw->value)[1]);
} else {
errno = 0;
fs->value->v.d = strtod(s, NULL);
if (errno == ERANGE) {
log_error(_out_of_range_msg, s, field_id);
goto error;
}
if (custom && (factor = *((const uint64_t *)custom)))
fs->value->v.d *= factor;
fs->value->v.d /= 512; /* store size in sectors! */
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_SIZE, &fs->value->v.d, NULL)) {
log_error("Size value %f found in selection is reserved.", fs->value->v.d);
goto error;
}
}
dm_pool_free(rh->selection->mem, s);
break;
case DM_REPORT_FIELD_TYPE_PERCENT:
if (rvw->value) {
fs->value->v.i = *(const uint64_t *) rvw->value;
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.i = (((const uint64_t *) rvw->value)[1]);
} else {
errno = 0;
fs->value->v.d = strtod(s, NULL);
if ((errno == ERANGE) || (fs->value->v.d < 0) || (fs->value->v.d > 100)) {
log_error(_out_of_range_msg, s, field_id);
goto error;
}
fs->value->v.i = (dm_percent_t) (DM_PERCENT_1 * fs->value->v.d);
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_PERCENT, &fs->value->v.i, NULL)) {
log_error("Percent value %s found in selection is reserved.", s);
goto error;
}
}
break;
case DM_REPORT_FIELD_TYPE_STRING_LIST:
if (!custom)
goto_bad;
fs->value->v.l = *(struct selection_str_list **)custom;
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_STRING_LIST, fs->value->v.l, NULL)) {
log_error("String list value found in selection is reserved.");
goto error;
}
break;
case DM_REPORT_FIELD_TYPE_TIME:
if (rvw->value) {
fs->value->v.t = *(const time_t *) rvw->value;
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.t = (((const time_t *) rvw->value)[1]);
} else {
if (!(tval = (struct time_value *) custom))
goto_bad;
fs->value->v.t = tval->t1;
if (tval->range)
fs->value->next->v.t = tval->t2;
if (_check_value_is_strictly_reserved(rh, field_num, DM_REPORT_FIELD_TYPE_TIME, &fs->value->v.t, NULL)) {
log_error("Time value found in selection is reserved.");
goto error;
}
}
break;
default:
log_error(INTERNAL_ERROR "_create_field_selection: "
"unknown type of selection field %s", field_id);
goto error;
}
}
return fs;
bad:
log_error(INTERNAL_ERROR "Forbiden NULL custom detected.");
error:
dm_pool_free(rh->selection->mem, fs);
return NULL;
}
static struct selection_node *_alloc_selection_node(struct dm_pool *mem, uint32_t type)
{
struct selection_node *sn;
if (!(sn = dm_pool_zalloc(mem, sizeof(struct selection_node)))) {
log_error("dm_report: struct selection_node allocation failed");
return NULL;
}
dm_list_init(&sn->list);
sn->type = type;
if (!(type & SEL_ITEM))
dm_list_init(&sn->selection.set);
return sn;
}
static void _display_selection_help(struct dm_report *rh)
{
static const char _grow_object_failed_msg[] = "_display_selection_help: dm_pool_grow_object failed";
struct op_def *t;
const struct dm_report_reserved_value *rv;
size_t len_all, len_final = 0;
const char **rvs;
char *rvs_all;
log_warn("Selection operands");
log_warn("------------------");
log_warn(" field - Reporting field.");
log_warn(" number - Non-negative integer value.");
log_warn(" size - Floating point value with units, 'm' unit used by default if not specified.");
log_warn(" percent - Non-negative integer with or without %% suffix.");
log_warn(" string - Characters quoted by \' or \" or unquoted.");
log_warn(" string list - Strings enclosed by [ ] or { } and elements delimited by either");
log_warn(" \"all items must match\" or \"at least one item must match\" operator.");
log_warn(" regular expression - Characters quoted by \' or \" or unquoted.");
log_warn(" ");
if (rh->reserved_values) {
log_warn("Reserved values");
log_warn("---------------");
for (rv = rh->reserved_values; rv->type; rv++) {
for (len_all = 0, rvs = rv->names; *rvs; rvs++)
len_all += strlen(*rvs) + 2;
if (len_all > len_final)
len_final = len_all;
}
for (rv = rh->reserved_values; rv->type; rv++) {
if (!dm_pool_begin_object(rh->mem, 256)) {
log_error("_display_selection_help: dm_pool_begin_object failed");
break;
}
for (rvs = rv->names; *rvs; rvs++) {
if (((rvs != rv->names) && !dm_pool_grow_object(rh->mem, ", ", 2)) ||
!dm_pool_grow_object(rh->mem, *rvs, strlen(*rvs))) {
log_error(_grow_object_failed_msg);
goto out_reserved_values;
}
}
if (!dm_pool_grow_object(rh->mem, "\0", 1)) {
log_error(_grow_object_failed_msg);
goto out_reserved_values;
}
rvs_all = dm_pool_end_object(rh->mem);
log_warn(" %-*s - %s [%s]", (int) len_final, rvs_all, rv->description,
_get_field_type_name(rv->type));
dm_pool_free(rh->mem, rvs_all);
}
log_warn(" ");
}
out_reserved_values:
log_warn("Selection operators");
log_warn("-------------------");
log_warn(" Comparison operators:");
t = _op_cmp;
for (; t->string; t++)
log_warn(" %6s - %s", t->string, t->desc);
log_warn(" ");
log_warn(" Logical and grouping operators:");
t = _op_log;
for (; t->string; t++)
log_warn(" %4s - %s", t->string, t->desc);
log_warn(" ");
}
static const char _sel_syntax_error_at_msg[] = "Selection syntax error at '%s'.";
static const char _sel_help_ref_msg[] = "Use \'help\' for selection to get more help.";
/*
* Selection parser
*
* _parse_* functions
*
* Input:
* s - a pointer to the parsed string
* Output:
* next - a pointer used for next _parse_*'s input,
* next == s if return value is NULL
* return value - a filter node pointer,
* NULL if s doesn't match
*/
/*
* SELECTION := FIELD_NAME OP_CMP STRING |
* FIELD_NAME OP_CMP NUMBER |
* FIELD_NAME OP_REGEX REGEX
*/
static struct selection_node *_parse_selection(struct dm_report *rh,
const char *s,
const char **next)
{
struct field_selection *fs;
struct selection_node *sn;
const char *ws, *we; /* field name */
const char *vs = NULL, *ve = NULL; /* value */
const char *last;
uint32_t flags, field_num;
int implicit;
const struct dm_report_field_type *ft;
struct selection_str_list *str_list;
struct reserved_value_wrapper rvw = {0};
struct time_value tval;
uint64_t factor;
void *custom = NULL;
char *tmp;
char c;
/* field name */
if (!(last = _tok_field_name(s, &ws, &we))) {
log_error("Expecting field name");
goto bad;
}
/* check if the field with given name exists */
if (!_get_field(rh, ws, (size_t) (we - ws), &field_num, &implicit)) {
c = we[0];
tmp = (char *) we;
tmp[0] = '\0';
_display_fields(rh, 0, 1);
log_warn(" ");
log_error("Unrecognised selection field: %s", ws);
tmp[0] = c;
goto bad;
}
if (implicit) {
ft = &_implicit_report_fields[field_num];
if (ft->flags & FLD_CMP_UNCOMPARABLE) {
c = we[0];
tmp = (char *) we;
tmp[0] = '\0';
_display_fields(rh, 0, 1);
log_warn(" ");
log_error("Selection field is uncomparable: %s.", ws);
tmp[0] = c;
goto bad;
}
} else
ft = &rh->fields[field_num];
/* comparison operator */
if (!(flags = _tok_op_cmp(we, &last))) {
_display_selection_help(rh);
log_error("Unrecognised comparison operator: %s", we);
goto bad;
}
if (!last) {
_display_selection_help(rh);
log_error("Missing value after operator");
goto bad;
}
/* comparison value */
if (flags & FLD_CMP_REGEX) {
/*
* REGEX value
*/
if (!(last = _tok_value_regex(rh, ft, last, &vs, &ve, &flags, &rvw)))
goto_bad;
} else {
/*
* STRING, NUMBER, SIZE, PERCENT, STRING_LIST, TIME value
*/
if (flags & FLD_CMP_NUMBER) {
if (!(ft->flags & (DM_REPORT_FIELD_TYPE_NUMBER |
DM_REPORT_FIELD_TYPE_SIZE |
DM_REPORT_FIELD_TYPE_PERCENT |
DM_REPORT_FIELD_TYPE_TIME))) {
_display_selection_help(rh);
log_error("Operator can be used only with number, size, time or percent fields: %s", ws);
goto bad;
}
} else if (flags & FLD_CMP_TIME) {
if (!(ft->flags & DM_REPORT_FIELD_TYPE_TIME)) {
_display_selection_help(rh);
log_error("Operator can be used only with time fields: %s", ws);
goto bad;
}
}
if (ft->flags == DM_REPORT_FIELD_TYPE_SIZE ||
ft->flags == DM_REPORT_FIELD_TYPE_NUMBER ||
ft->flags == DM_REPORT_FIELD_TYPE_PERCENT)
custom = &factor;
else if (ft->flags & DM_REPORT_FIELD_TYPE_TIME)
custom = &tval;
else if (ft->flags == DM_REPORT_FIELD_TYPE_STRING_LIST)
custom = &str_list;
else
custom = NULL;
if (!(last = _tok_value(rh, ft, field_num, implicit,
last, &vs, &ve, &flags,
&rvw, rh->selection->mem, custom)))
goto_bad;
}
*next = _skip_space(last);
/* create selection */
if (!(fs = _create_field_selection(rh, field_num, implicit, vs, (size_t) (ve - vs), flags, &rvw, custom)))
return_NULL;
/* create selection node */
if (!(sn = _alloc_selection_node(rh->selection->mem, SEL_ITEM)))
return_NULL;
/* add selection to selection node */
sn->selection.item = fs;
return sn;
bad:
log_error(_sel_syntax_error_at_msg, s);
log_error(_sel_help_ref_msg);
*next = s;
return NULL;
}
static struct selection_node *_parse_or_ex(struct dm_report *rh,
const char *s,
const char **next,
struct selection_node *or_sn);
static struct selection_node *_parse_ex(struct dm_report *rh,
const char *s,
const char **next)
{
static const char _ps_expected_msg[] = "Syntax error: left parenthesis expected at \'%s\'";
static const char _pe_expected_msg[] = "Syntax error: right parenthesis expected at \'%s\'";
struct selection_node *sn = NULL;
uint32_t t;
const char *tmp = NULL;
t = _tok_op_log(s, next, SEL_MODIFIER_NOT | SEL_PRECEDENCE_PS);
if (t == SEL_MODIFIER_NOT) {
/* '!' '(' EXPRESSION ')' */
if (!_tok_op_log(*next, &tmp, SEL_PRECEDENCE_PS)) {
log_error(_ps_expected_msg, *next);
goto error;
}
if (!(sn = _parse_or_ex(rh, tmp, next, NULL)))
goto error;
sn->type |= SEL_MODIFIER_NOT;
if (!_tok_op_log(*next, &tmp, SEL_PRECEDENCE_PE)) {
log_error(_pe_expected_msg, *next);
goto error;
}
*next = tmp;
} else if (t == SEL_PRECEDENCE_PS) {
/* '(' EXPRESSION ')' */
if (!(sn = _parse_or_ex(rh, *next, &tmp, NULL)))
goto error;
if (!_tok_op_log(tmp, next, SEL_PRECEDENCE_PE)) {
log_error(_pe_expected_msg, *next);
goto error;
}
} else if ((s = _skip_space(s))) {
/* SELECTION */
sn = _parse_selection(rh, s, next);
} else {
sn = NULL;
*next = s;
}
return sn;
error:
*next = s;
return NULL;
}
/* AND_EXPRESSION := EX (AND_OP AND_EXPRSSION) */
static struct selection_node *_parse_and_ex(struct dm_report *rh,
const char *s,
const char **next,
struct selection_node *and_sn)
{
struct selection_node *n;
const char *tmp = NULL;
n = _parse_ex(rh, s, next);
if (!n)
goto error;
if (!_tok_op_log(*next, &tmp, SEL_AND)) {
if (!and_sn)
return n;
dm_list_add(&and_sn->selection.set, &n->list);
return and_sn;
}
if (!and_sn) {
if (!(and_sn = _alloc_selection_node(rh->selection->mem, SEL_AND)))
goto error;
}
dm_list_add(&and_sn->selection.set, &n->list);
return _parse_and_ex(rh, tmp, next, and_sn);
error:
*next = s;
return NULL;
}
/* OR_EXPRESSION := AND_EXPRESSION (OR_OP OR_EXPRESSION) */
static struct selection_node *_parse_or_ex(struct dm_report *rh,
const char *s,
const char **next,
struct selection_node *or_sn)
{
struct selection_node *n;
const char *tmp = NULL;
n = _parse_and_ex(rh, s, next, NULL);
if (!n)
goto error;
if (!_tok_op_log(*next, &tmp, SEL_OR)) {
if (!or_sn)
return n;
dm_list_add(&or_sn->selection.set, &n->list);
return or_sn;
}
if (!or_sn) {
if (!(or_sn = _alloc_selection_node(rh->selection->mem, SEL_OR)))
goto error;
}
dm_list_add(&or_sn->selection.set, &n->list);
return _parse_or_ex(rh, tmp, next, or_sn);
error:
*next = s;
return NULL;
}
static int _alloc_rh_selection(struct dm_report *rh)
{
if (!(rh->selection = dm_pool_zalloc(rh->mem, sizeof(struct selection))) ||
!(rh->selection->mem = dm_pool_create("report selection", 10 * 1024))) {
log_error("Failed to allocate report selection structure.");
if (rh->selection)
dm_pool_free(rh->mem, rh->selection);
return 0;
}
return 1;
}
#define SPECIAL_SELECTION_ALL "all"
static int _report_set_selection(struct dm_report *rh, const char *selection, int add_new_fields)
{
struct selection_node *root = NULL;
const char *fin, *next;
if (rh->selection) {
if (rh->selection->selection_root)
/* Trash any previous selection. */
dm_pool_free(rh->selection->mem, rh->selection->selection_root);
rh->selection->selection_root = NULL;
} else {
if (!_alloc_rh_selection(rh))
goto_bad;
}
if (!selection || !selection[0] || !strcasecmp(selection, SPECIAL_SELECTION_ALL))
return 1;
rh->selection->add_new_fields = add_new_fields;
if (!(root = _alloc_selection_node(rh->selection->mem, SEL_OR)))
return 0;
if (!_parse_or_ex(rh, selection, &fin, root))
goto_bad;
next = _skip_space(fin);
if (*next) {
log_error("Expecting logical operator");
log_error(_sel_syntax_error_at_msg, next);
log_error(_sel_help_ref_msg);
goto bad;
}
rh->selection->selection_root = root;
return 1;
bad:
dm_pool_free(rh->selection->mem, root);
return 0;
}
static void _reset_field_props(struct dm_report *rh)
{
struct field_properties *fp;
dm_list_iterate_items(fp, &rh->field_props)
fp->width = fp->initial_width;
rh->flags |= RH_FIELD_CALC_NEEDED;
}
int dm_report_set_selection(struct dm_report *rh, const char *selection)
{
struct row *row;
if (!_report_set_selection(rh, selection, 0))
return_0;
_reset_field_props(rh);
dm_list_iterate_items(row, &rh->rows) {
row->selected = _check_report_selection(rh, &row->fields);
if (row->field_sel_status)
_implicit_report_fields[row->field_sel_status->props->field_num].report_fn(rh,
rh->mem, row->field_sel_status, row, rh->private);
}
return 1;
}
struct dm_report *dm_report_init_with_selection(uint32_t *report_types,
const struct dm_report_object_type *types,
const struct dm_report_field_type *fields,
const char *output_fields,
const char *output_separator,
uint32_t output_flags,
const char *sort_keys,
const char *selection,
const struct dm_report_reserved_value reserved_values[],
void *private_data)
{
struct dm_report *rh;
_implicit_report_fields = _implicit_special_report_fields_with_selection;
if (!(rh = dm_report_init(report_types, types, fields, output_fields,
output_separator, output_flags, sort_keys, private_data)))
return NULL;
if (!selection || !selection[0]) {
rh->selection = NULL;
return rh;
}
if (!_check_reserved_values_supported(fields, reserved_values)) {
log_error(INTERNAL_ERROR "dm_report_init_with_selection: "
"trying to register unsupported reserved value type, "
"skipping report selection");
return rh;
}
rh->reserved_values = reserved_values;
if (!strcasecmp(selection, SPECIAL_FIELD_HELP_ID) ||
!strcmp(selection, SPECIAL_FIELD_HELP_ALT_ID)) {
_display_fields(rh, 0, 1);
log_warn(" ");
_display_selection_help(rh);
rh->flags |= RH_ALREADY_REPORTED;
return rh;
}
if (!_report_set_selection(rh, selection, 1))
goto_bad;
_dm_report_init_update_types(rh, report_types);
return rh;
bad:
dm_report_free(rh);
return NULL;
}
/*
* Print row of headings
*/
static int _report_headings(struct dm_report *rh)
{
const struct dm_report_field_type *fields;
struct field_properties *fp;
const char *heading;
char *buf = NULL;
size_t buf_size = 0;
rh->flags |= RH_HEADINGS_PRINTED;
if (!(rh->flags & DM_REPORT_OUTPUT_HEADINGS))
return 1;
if (!dm_pool_begin_object(rh->mem, 128)) {
log_error("dm_report: "
"dm_pool_begin_object failed for headings");
return 0;
}
dm_list_iterate_items(fp, &rh->field_props) {
if ((int) buf_size < fp->width)
buf_size = (size_t) fp->width;
}
/* Including trailing '\0'! */
buf_size++;
if (!(buf = malloc(buf_size))) {
log_error("dm_report: Could not allocate memory for heading buffer.");
goto bad;
}
/* First heading line */
dm_list_iterate_items(fp, &rh->field_props) {
if (fp->flags & FLD_HIDDEN)
continue;
fields = fp->implicit ? _implicit_report_fields : rh->fields;
heading = fields[fp->field_num].heading;
if (rh->flags & DM_REPORT_OUTPUT_ALIGNED) {
if (dm_snprintf(buf, buf_size, "%-*.*s",
fp->width, fp->width, heading) < 0) {
log_error("dm_report: snprintf heading failed");
goto bad;
}
if (!dm_pool_grow_object(rh->mem, buf, fp->width)) {
log_error("dm_report: Failed to generate report headings for printing");
goto bad;
}
} else if (!dm_pool_grow_object(rh->mem, heading, 0)) {
log_error("dm_report: Failed to generate report headings for printing");
goto bad;
}
if (!dm_list_end(&rh->field_props, &fp->list))
if (!dm_pool_grow_object(rh->mem, rh->separator, 0)) {
log_error("dm_report: Failed to generate report headings for printing");
goto bad;
}
}
if (!dm_pool_grow_object(rh->mem, "\0", 1)) {
log_error("dm_report: Failed to generate report headings for printing");
goto bad;
}
/* print all headings */
heading = (char *) dm_pool_end_object(rh->mem);
log_print("%s", heading);
dm_pool_free(rh->mem, (void *)heading);
free(buf);
return 1;
bad:
free(buf);
dm_pool_abandon_object(rh->mem);
return 0;
}
static int _should_display_row(struct row *row)
{
return row->field_sel_status || row->selected;
}
static void _recalculate_fields(struct dm_report *rh)
{
struct row *row;
struct dm_report_field *field;
int len;
dm_list_iterate_items(row, &rh->rows) {
dm_list_iterate_items(field, &row->fields) {
if ((rh->flags & RH_SORT_REQUIRED) &&
(field->props->flags & FLD_SORT_KEY)) {
(*row->sort_fields)[field->props->sort_posn] = field;
}
if (_should_display_row(row)) {
len = (int) strlen(field->report_string);
if ((len > field->props->width))
field->props->width = len;
}
}
}
rh->flags &= ~RH_FIELD_CALC_NEEDED;
}
int dm_report_column_headings(struct dm_report *rh)
{
/* Columns-as-rows does not use _report_headings. */
if (rh->flags & DM_REPORT_OUTPUT_COLUMNS_AS_ROWS)
return 1;
if (rh->flags & RH_FIELD_CALC_NEEDED)
_recalculate_fields(rh);
return _report_headings(rh);
}
/*
* Sort rows of data
*/
static int _row_compare(const void *a, const void *b)
{
const struct row *rowa = *(const struct row * const *) a;
const struct row *rowb = *(const struct row * const *) b;
const struct dm_report_field *sfa, *sfb;
uint32_t cnt;
for (cnt = 0; cnt < rowa->rh->keys_count; cnt++) {
sfa = (*rowa->sort_fields)[cnt];
sfb = (*rowb->sort_fields)[cnt];
if ((sfa->props->flags & DM_REPORT_FIELD_TYPE_NUMBER) ||
(sfa->props->flags & DM_REPORT_FIELD_TYPE_SIZE) ||
(sfa->props->flags & DM_REPORT_FIELD_TYPE_TIME)) {
const uint64_t numa =
*(const uint64_t *) sfa->sort_value;
const uint64_t numb =
*(const uint64_t *) sfb->sort_value;
if (numa == numb)
continue;
if (sfa->props->flags & FLD_ASCENDING) {
return (numa > numb) ? 1 : -1;
} else { /* FLD_DESCENDING */
return (numa < numb) ? 1 : -1;
}
} else {
/* DM_REPORT_FIELD_TYPE_STRING
* DM_REPORT_FIELD_TYPE_STRING_LIST */
const char *stra = (const char *) sfa->sort_value;
const char *strb = (const char *) sfb->sort_value;
int cmp = strcmp(stra, strb);
if (!cmp)
continue;
if (sfa->props->flags & FLD_ASCENDING) {
return (cmp > 0) ? 1 : -1;
} else { /* FLD_DESCENDING */
return (cmp < 0) ? 1 : -1;
}
}
}
return 0; /* Identical */
}
static int _sort_rows(struct dm_report *rh)
{
struct row *(*rows)[];
uint32_t count = 0;
struct row *row;
if (!(rows = dm_pool_alloc(rh->mem, sizeof(**rows) *
dm_list_size(&rh->rows)))) {
log_error("dm_report: sort array allocation failed");
return 0;
}
dm_list_iterate_items(row, &rh->rows)
(*rows)[count++] = row;
qsort(rows, count, sizeof(**rows), _row_compare);
dm_list_init(&rh->rows);
while (count--)
dm_list_add_h(&rh->rows, &(*rows)[count]->list);
return 1;
}
#define STANDARD_QUOTE "\'"
#define STANDARD_PAIR "="
#define JSON_INDENT_UNIT 4
#define JSON_SPACE " "
#define JSON_QUOTE "\""
#define JSON_PAIR ":"
#define JSON_SEPARATOR ","
#define JSON_OBJECT_START "{"
#define JSON_OBJECT_END "}"
#define JSON_ARRAY_START "["
#define JSON_ARRAY_END "]"
#define JSON_ESCAPE_CHAR "\\"
#define JSON_NULL "null"
#define UNABLE_TO_EXTEND_OUTPUT_LINE_MSG "dm_report: Unable to extend output line"
static int _is_basic_report(struct dm_report *rh)
{
return rh->group_item &&
(rh->group_item->group->type == DM_REPORT_GROUP_BASIC);
}
static int _is_json_std_report(struct dm_report *rh)
{
return rh->group_item &&
rh->group_item->group->type == DM_REPORT_GROUP_JSON_STD;
}
static int _is_json_report(struct dm_report *rh)
{
return rh->group_item &&
(rh->group_item->group->type == DM_REPORT_GROUP_JSON ||
rh->group_item->group->type == DM_REPORT_GROUP_JSON_STD);
}
static int _is_pure_numeric_field(struct dm_report_field *field)
{
return field->props->flags & (DM_REPORT_FIELD_TYPE_NUMBER | DM_REPORT_FIELD_TYPE_PERCENT);
}
/*
* Produce report output
*/
static int _output_field(struct dm_report *rh, struct dm_report_field *field)
{
const struct dm_report_field_type *fields = field->props->implicit ? _implicit_report_fields
: rh->fields;
char *field_id;
int32_t width;
uint32_t align;
const char *repstr;
const char *p1_repstr, *p2_repstr;
char *buf = NULL;
size_t buf_size = 0;
if (_is_json_report(rh)) {
if (!dm_pool_grow_object(rh->mem, JSON_QUOTE, 1) ||
!dm_pool_grow_object(rh->mem, fields[field->props->field_num].id, 0) ||
!dm_pool_grow_object(rh->mem, JSON_QUOTE, 1) ||
!dm_pool_grow_object(rh->mem, JSON_PAIR, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
if (!(_is_json_std_report(rh) && _is_pure_numeric_field(field))) {
if (!dm_pool_grow_object(rh->mem, JSON_QUOTE, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
} else if (rh->flags & DM_REPORT_OUTPUT_FIELD_NAME_PREFIX) {
if (!(field_id = strdup(fields[field->props->field_num].id))) {
log_error("dm_report: Failed to copy field name");
return 0;
}
if (!dm_pool_grow_object(rh->mem, rh->output_field_name_prefix, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
free(field_id);
return 0;
}
if (!dm_pool_grow_object(rh->mem, _toupperstr(field_id), 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
free(field_id);
return 0;
}
free(field_id);
if (!dm_pool_grow_object(rh->mem, STANDARD_PAIR, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
if (!(rh->flags & DM_REPORT_OUTPUT_FIELD_UNQUOTED) &&
!dm_pool_grow_object(rh->mem, STANDARD_QUOTE, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
}
if (_is_json_std_report(rh) && _is_pure_numeric_field(field) && !*field->report_string)
repstr = JSON_NULL;
else
repstr = field->report_string;
width = field->props->width;
if (!(rh->flags & DM_REPORT_OUTPUT_ALIGNED)) {
if (_is_json_report(rh)) {
/* Escape any JSON_QUOTE that may appear in reported string. */
p1_repstr = repstr;
while ((p2_repstr = strstr(p1_repstr, JSON_QUOTE))) {
if (p2_repstr > p1_repstr) {
if (!dm_pool_grow_object(rh->mem, p1_repstr, p2_repstr - p1_repstr)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
}
if (!dm_pool_grow_object(rh->mem, JSON_ESCAPE_CHAR, 1) ||
!dm_pool_grow_object(rh->mem, JSON_QUOTE, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
p1_repstr = p2_repstr + 1;
}
if (!dm_pool_grow_object(rh->mem, p1_repstr, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
} else {
if (!dm_pool_grow_object(rh->mem, repstr, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
}
} else {
if (!(align = field->props->flags & DM_REPORT_FIELD_ALIGN_MASK))
align = ((field->props->flags & DM_REPORT_FIELD_TYPE_NUMBER) ||
(field->props->flags & DM_REPORT_FIELD_TYPE_SIZE)) ?
DM_REPORT_FIELD_ALIGN_RIGHT : DM_REPORT_FIELD_ALIGN_LEFT;
/* Including trailing '\0'! */
buf_size = width + 1;
if (!(buf = malloc(buf_size))) {
log_error("dm_report: Could not allocate memory for output line buffer.");
return 0;
}
if (align & DM_REPORT_FIELD_ALIGN_LEFT) {
if (dm_snprintf(buf, buf_size, "%-*.*s",
width, width, repstr) < 0) {
log_error("dm_report: left-aligned snprintf() failed");
goto bad;
}
if (!dm_pool_grow_object(rh->mem, buf, width)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
} else if (align & DM_REPORT_FIELD_ALIGN_RIGHT) {
if (dm_snprintf(buf, buf_size, "%*.*s",
width, width, repstr) < 0) {
log_error("dm_report: right-aligned snprintf() failed");
goto bad;
}
if (!dm_pool_grow_object(rh->mem, buf, width)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
}
if (rh->flags & DM_REPORT_OUTPUT_FIELD_NAME_PREFIX) {
if (!(rh->flags & DM_REPORT_OUTPUT_FIELD_UNQUOTED)) {
if (!dm_pool_grow_object(rh->mem, STANDARD_QUOTE, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
} else if (_is_json_report(rh)) {
if (!(_is_json_std_report(rh) && _is_pure_numeric_field(field))) {
if (!dm_pool_grow_object(rh->mem, JSON_QUOTE, 1)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
}
free(buf);
return 1;
bad:
free(buf);
return 0;
}
static void _destroy_rows(struct dm_report *rh)
{
/*
* free the first row allocated to this report: since this is a
* pool allocation this will also free all subsequently allocated
* rows from the report and any associated string data.
*/
if (rh->first_row)
dm_pool_free(rh->mem, rh->first_row);
rh->first_row = NULL;
dm_list_init(&rh->rows);
/* Reset field widths to original values. */
_reset_field_props(rh);
}
static int _output_as_rows(struct dm_report *rh)
{
const struct dm_report_field_type *fields;
struct field_properties *fp;
struct dm_report_field *field;
struct row *row;
dm_list_iterate_items(fp, &rh->field_props) {
if (fp->flags & FLD_HIDDEN) {
dm_list_iterate_items(row, &rh->rows) {
field = dm_list_item(dm_list_first(&row->fields), struct dm_report_field);
dm_list_del(&field->list);
}
continue;
}
fields = fp->implicit ? _implicit_report_fields : rh->fields;
if (!dm_pool_begin_object(rh->mem, 512)) {
log_error("dm_report: Unable to allocate output line");
return 0;
}
if ((rh->flags & DM_REPORT_OUTPUT_HEADINGS)) {
if (!dm_pool_grow_object(rh->mem, fields[fp->field_num].heading, 0)) {
log_error("dm_report: Failed to extend row for field name");
goto bad;
}
if (!dm_pool_grow_object(rh->mem, rh->separator, 0)) {
log_error("dm_report: Failed to extend row with separator");
goto bad;
}
}
dm_list_iterate_items(row, &rh->rows) {
if ((field = dm_list_item(dm_list_first(&row->fields), struct dm_report_field))) {
if (!_output_field(rh, field))
goto bad;
dm_list_del(&field->list);
}
if (!dm_list_end(&rh->rows, &row->list))
if (!dm_pool_grow_object(rh->mem, rh->separator, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
if (!dm_pool_grow_object(rh->mem, "\0", 1)) {
log_error("dm_report: Failed to terminate row");
goto bad;
}
log_print("%s", (char *) dm_pool_end_object(rh->mem));
}
_destroy_rows(rh);
return 1;
bad:
dm_pool_abandon_object(rh->mem);
return 0;
}
static int _output_as_columns(struct dm_report *rh)
{
struct dm_list *fh, *rowh, *ftmp, *rtmp;
struct row *row = NULL;
struct dm_report_field *field;
struct dm_list *last_row;
int do_field_delim;
char *line;
/* If headings not printed yet, calculate field widths and print them */
if (!(rh->flags & RH_HEADINGS_PRINTED))
_report_headings(rh);
/* Print and clear buffer */
last_row = dm_list_last(&rh->rows);
dm_list_iterate_safe(rowh, rtmp, &rh->rows) {
row = dm_list_item(rowh, struct row);
if (!_should_display_row(row))
continue;
if (!dm_pool_begin_object(rh->mem, 512)) {
log_error("dm_report: Unable to allocate output line");
return 0;
}
if (_is_json_report(rh)) {
if (!dm_pool_grow_object(rh->mem, JSON_OBJECT_START, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
do_field_delim = 0;
dm_list_iterate_safe(fh, ftmp, &row->fields) {
field = dm_list_item(fh, struct dm_report_field);
if (field->props->flags & FLD_HIDDEN)
continue;
if (do_field_delim) {
if (_is_json_report(rh)) {
if (!dm_pool_grow_object(rh->mem, JSON_SEPARATOR, 0) ||
!dm_pool_grow_object(rh->mem, JSON_SPACE, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
} else {
if (!dm_pool_grow_object(rh->mem, rh->separator, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
} else
do_field_delim = 1;
if (!_output_field(rh, field))
goto bad;
if (!(rh->flags & DM_REPORT_OUTPUT_MULTIPLE_TIMES))
dm_list_del(&field->list);
}
if (_is_json_report(rh)) {
if (!dm_pool_grow_object(rh->mem, JSON_OBJECT_END, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
if (rowh != last_row &&
!dm_pool_grow_object(rh->mem, JSON_SEPARATOR, 0)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
}
if (!dm_pool_grow_object(rh->mem, "\0", 1)) {
log_error("dm_report: Unable to terminate output line");
goto bad;
}
line = (char *) dm_pool_end_object(rh->mem);
log_print("%*s", rh->group_item ? rh->group_item->group->indent + (int) strlen(line) : 0, line);
if (!(rh->flags & DM_REPORT_OUTPUT_MULTIPLE_TIMES))
dm_list_del(&row->list);
}
if (!(rh->flags & DM_REPORT_OUTPUT_MULTIPLE_TIMES))
_destroy_rows(rh);
return 1;
bad:
dm_pool_abandon_object(rh->mem);
return 0;
}
int dm_report_is_empty(struct dm_report *rh)
{
return dm_list_empty(&rh->rows) ? 1 : 0;
}
static struct report_group_item *_get_topmost_report_group_item(struct dm_report_group *group)
{
struct report_group_item *item;
if (group && !dm_list_empty(&group->items))
item = dm_list_item(dm_list_first(&group->items), struct report_group_item);
else
item = NULL;
return item;
}
static void _json_output_start(struct dm_report_group *group)
{
if (!group->indent) {
log_print(JSON_OBJECT_START);
group->indent += JSON_INDENT_UNIT;
}
}
static int _json_output_array_start(struct dm_pool *mem, struct report_group_item *item)
{
const char *name = (const char *) item->data;
char *output;
if (!dm_pool_begin_object(mem, 32)) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
return 0;
}
if (!dm_pool_grow_object(mem, JSON_QUOTE, 1) ||
!dm_pool_grow_object(mem, name, 0) ||
!dm_pool_grow_object(mem, JSON_QUOTE JSON_PAIR JSON_SPACE JSON_ARRAY_START, 0) ||
!dm_pool_grow_object(mem, "\0", 1) ||
!(output = dm_pool_end_object(mem))) {
log_error(UNABLE_TO_EXTEND_OUTPUT_LINE_MSG);
goto bad;
}
if (item->parent->store.finished_count > 0)
log_print("%*s", item->group->indent + (int) sizeof(JSON_SEPARATOR) - 1, JSON_SEPARATOR);
if (item->parent->parent && item->parent->data) {
log_print("%*s", item->group->indent + (int) sizeof(JSON_OBJECT_START) - 1, JSON_OBJECT_START);
item->group->indent += JSON_INDENT_UNIT;
}
log_print("%*s", item->group->indent + (int) strlen(output), output);
item->group->indent += JSON_INDENT_UNIT;
dm_pool_free(mem, output);
return 1;
bad:
dm_pool_abandon_object(mem);
return 0;
}
static int _prepare_json_report_output(struct dm_report *rh)
{
_json_output_start(rh->group_item->group);
if (rh->group_item->output_done && dm_list_empty(&rh->rows))
return 1;
/*
* If this report is in JSON group, it must be at the
* top of the stack of reports so the output from
* different reports do not interleave with each other.
*/
if (_get_topmost_report_group_item(rh->group_item->group) != rh->group_item) {
log_error("dm_report: dm_report_output: interleaved reports detected for JSON output");
return 0;
}
if (rh->group_item->needs_closing) {
log_error("dm_report: dm_report_output: unfinished JSON output detected");
return 0;
}
if (!_json_output_array_start(rh->mem, rh->group_item))
return_0;
rh->group_item->needs_closing = 1;
return 1;
}
static int _print_basic_report_header(struct dm_report *rh)
{
const char *report_name = (const char *) rh->group_item->data;
size_t len = strlen(report_name);
char *underline;
if (!(underline = dm_pool_zalloc(rh->mem, len + 1)))
return_0;
memset(underline, '=', len);
if (rh->group_item->parent->store.finished_count > 0)
log_print("%s", "");
log_print("%s", report_name);
log_print("%s", underline);
dm_pool_free(rh->mem, underline);
return 1;
}
int dm_report_output(struct dm_report *rh)
{
int r = 0;
if (_is_json_report(rh) &&
!_prepare_json_report_output(rh))
return_0;
if (dm_list_empty(&rh->rows)) {
r = 1;
goto out;
}
if (rh->flags & RH_FIELD_CALC_NEEDED)
_recalculate_fields(rh);
if ((rh->flags & RH_SORT_REQUIRED))
_sort_rows(rh);
if (_is_basic_report(rh) && !_print_basic_report_header(rh))
goto_out;
if ((rh->flags & DM_REPORT_OUTPUT_COLUMNS_AS_ROWS))
r = _output_as_rows(rh);
else
r = _output_as_columns(rh);
out:
if (r && rh->group_item)
rh->group_item->output_done = 1;
return r;
}
void dm_report_destroy_rows(struct dm_report *rh)
{
_destroy_rows(rh);
}
struct dm_report_group *dm_report_group_create(dm_report_group_type_t type, void *data)
{
struct dm_report_group *group;
struct dm_pool *mem;
struct report_group_item *item;
if (!(mem = dm_pool_create("report_group", 1024))) {
log_error("dm_report: dm_report_init_group: failed to allocate mem pool");
return NULL;
}
if (!(group = dm_pool_zalloc(mem, sizeof(*group)))) {
log_error("dm_report: failed to allocate report group structure");
goto bad;
}
group->mem = mem;
group->type = type;
dm_list_init(&group->items);
if (!(item = dm_pool_zalloc(mem, sizeof(*item)))) {
log_error("dm_report: faile to allocate root report group item");
goto bad;
}
dm_list_add_h(&group->items, &item->list);
return group;
bad:
dm_pool_destroy(mem);
return NULL;
}
static int _report_group_push_single(struct report_group_item *item, void *data)
{
struct report_group_item *item_iter;
unsigned count = 0;
dm_list_iterate_items(item_iter, &item->group->items) {
if (item_iter->report)
count++;
}
if (count > 1) {
log_error("dm_report: unable to add more than one report "
"to current report group");
return 0;
}
return 1;
}
static int _report_group_push_basic(struct report_group_item *item, const char *name)
{
if (item->report) {
if (!(item->report->flags & DM_REPORT_OUTPUT_BUFFERED))
item->report->flags &= ~(DM_REPORT_OUTPUT_MULTIPLE_TIMES);
} else {
if (!name && item->parent->store.finished_count > 0)
log_print("%s", "");
}
return 1;
}
static int _report_group_push_json(struct report_group_item *item, const char *name)
{
if (name && !(item->data = dm_pool_strdup(item->group->mem, name))) {
log_error("dm_report: failed to duplicate json item name");
return 0;
}
if (item->report) {
item->report->flags &= ~(DM_REPORT_OUTPUT_ALIGNED |
DM_REPORT_OUTPUT_HEADINGS |
DM_REPORT_OUTPUT_COLUMNS_AS_ROWS);
item->report->flags |= DM_REPORT_OUTPUT_BUFFERED;
} else {
_json_output_start(item->group);
if (name) {
if (!_json_output_array_start(item->group->mem, item))
return_0;
} else {
if (!item->parent->parent) {
log_error("dm_report: can't use unnamed object at top level of JSON output");
return 0;
}
if (item->parent->store.finished_count > 0)
log_print("%*s", item->group->indent + (int) sizeof(JSON_SEPARATOR) - 1, JSON_SEPARATOR);
log_print("%*s", item->group->indent + (int) sizeof(JSON_OBJECT_START) - 1, JSON_OBJECT_START);
item->group->indent += JSON_INDENT_UNIT;
}
item->output_done = 1;
item->needs_closing = 1;
}
return 1;
}
int dm_report_group_push(struct dm_report_group *group, struct dm_report *report, void *data)
{
struct report_group_item *item, *tmp_item;
if (!group)
return 1;
if (!(item = dm_pool_zalloc(group->mem, sizeof(*item)))) {
log_error("dm_report: dm_report_group_push: group item allocation failed");
return 0;
}
if ((item->report = report)) {
item->store.orig_report_flags = report->flags;
report->group_item = item;
}
item->group = group;
item->data = data;
dm_list_iterate_items(tmp_item, &group->items) {
if (!tmp_item->report) {
item->parent = tmp_item;
break;
}
}
dm_list_add_h(&group->items, &item->list);
switch (group->type) {
case DM_REPORT_GROUP_SINGLE:
if (!_report_group_push_single(item, data))
goto_bad;
break;
case DM_REPORT_GROUP_BASIC:
if (!_report_group_push_basic(item, data))
goto_bad;
break;
case DM_REPORT_GROUP_JSON:
case DM_REPORT_GROUP_JSON_STD:
if (!_report_group_push_json(item, data))
goto_bad;
break;
default:
goto_bad;
}
return 1;
bad:
dm_list_del(&item->list);
dm_pool_free(group->mem, item);
return 0;
}
static int _report_group_pop_single(struct report_group_item *item)
{
return 1;
}
static int _report_group_pop_basic(struct report_group_item *item)
{
return 1;
}
static int _report_group_pop_json(struct report_group_item *item)
{
if (item->output_done && item->needs_closing) {
if (item->data) {
item->group->indent -= JSON_INDENT_UNIT;
log_print("%*s", item->group->indent + (int) sizeof(JSON_ARRAY_END) - 1, JSON_ARRAY_END);
}
if (item->parent->data && item->parent->parent) {
item->group->indent -= JSON_INDENT_UNIT;
log_print("%*s", item->group->indent + (int) sizeof(JSON_OBJECT_END) - 1, JSON_OBJECT_END);
}
item->needs_closing = 0;
}
return 1;
}
int dm_report_group_pop(struct dm_report_group *group)
{
struct report_group_item *item;
if (!group)
return 1;
if (!(item = _get_topmost_report_group_item(group))) {
log_error("dm_report: dm_report_group_pop: group has no items");
return 0;
}
switch (group->type) {
case DM_REPORT_GROUP_SINGLE:
if (!_report_group_pop_single(item))
return_0;
break;
case DM_REPORT_GROUP_BASIC:
if (!_report_group_pop_basic(item))
return_0;
break;
case DM_REPORT_GROUP_JSON:
case DM_REPORT_GROUP_JSON_STD:
if (!_report_group_pop_json(item))
return_0;
break;
default:
return 0;
}
dm_list_del(&item->list);
if (item->report) {
item->report->flags = item->store.orig_report_flags;
item->report->group_item = NULL;
}
if (item->parent)
item->parent->store.finished_count++;
dm_pool_free(group->mem, item);
return 1;
}
int dm_report_group_output_and_pop_all(struct dm_report_group *group)
{
struct report_group_item *item, *tmp_item;
dm_list_iterate_items_safe(item, tmp_item, &group->items) {
if (!item->parent) {
item->store.finished_count = 0;
continue;
}
if (item->report && !dm_report_output(item->report))
return_0;
if (!dm_report_group_pop(group))
return_0;
}
if (group->type == DM_REPORT_GROUP_JSON || group->type == DM_REPORT_GROUP_JSON_STD) {
_json_output_start(group);
log_print(JSON_OBJECT_END);
group->indent -= JSON_INDENT_UNIT;
}
return 1;
}
int dm_report_group_destroy(struct dm_report_group *group)
{
int r = 1;
if (!group)
return 1;
if (!dm_report_group_output_and_pop_all(group))
r = 0;
dm_pool_destroy(group->mem);
return r;
}
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