Date: Thu, 16 Jan 2014 13:12:06 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r260710 - vendor/illumos/dist/lib/libnvpair Message-ID: <201401161312.s0GDC6pM004177@svn.freebsd.org>
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Author: avg Date: Thu Jan 16 13:12:06 2014 New Revision: 260710 URL: http://svnweb.freebsd.org/changeset/base/260710 Log: 4304 fmdump shall emit JSON illumos/illumos-gate@2db6d663182655cb393dc2c15668bc9293364594 NB: this adds JSON output support to libnvpair Added: vendor/illumos/dist/lib/libnvpair/nvpair_json.c (contents, props changed) Modified: vendor/illumos/dist/lib/libnvpair/libnvpair.h Modified: vendor/illumos/dist/lib/libnvpair/libnvpair.h ============================================================================== --- vendor/illumos/dist/lib/libnvpair/libnvpair.h Thu Jan 16 12:58:03 2014 (r260709) +++ vendor/illumos/dist/lib/libnvpair/libnvpair.h Thu Jan 16 13:12:06 2014 (r260710) @@ -20,6 +20,7 @@ */ /* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2013, Joyent, Inc. All rights reserved. */ #ifndef _LIBNVPAIR_H @@ -46,6 +47,7 @@ extern int nvpair_value_match_regex(nvpa char **); extern void nvlist_print(FILE *, nvlist_t *); +extern int nvlist_print_json(FILE *, nvlist_t *); extern void dump_nvlist(nvlist_t *, int); /* Added: vendor/illumos/dist/lib/libnvpair/nvpair_json.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ vendor/illumos/dist/lib/libnvpair/nvpair_json.c Thu Jan 16 13:12:06 2014 (r260710) @@ -0,0 +1,401 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ +/* + * Copyright (c) 2013, Joyent, Inc. All rights reserved. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <strings.h> +#include <wchar.h> +#include <sys/debug.h> + +#include "libnvpair.h" + +#define FPRINTF(fp, ...) \ + if (fprintf(fp, __VA_ARGS__) < 0) \ + return (-1) \ + +/* + * When formatting a string for JSON output we must escape certain characters, + * as described in RFC4627. This applies to both member names and + * DATA_TYPE_STRING values. + * + * This function will only operate correctly if the following conditions are + * met: + * + * 1. The input String is encoded in the current locale. + * + * 2. The current locale includes the Basic Multilingual Plane (plane 0) + * as defined in the Unicode standard. + * + * The output will be entirely 7-bit ASCII (as a subset of UTF-8) with all + * representable Unicode characters included in their escaped numeric form. + */ +static int +nvlist_print_json_string(FILE *fp, const char *input) +{ + mbstate_t mbr; + wchar_t c; + size_t sz; + + bzero(&mbr, sizeof (mbr)); + + FPRINTF(fp, "\""); + while ((sz = mbrtowc(&c, input, MB_CUR_MAX, &mbr)) > 0) { + switch (c) { + case '"': + FPRINTF(fp, "\\\""); + break; + case '\n': + FPRINTF(fp, "\\n"); + break; + case '\r': + FPRINTF(fp, "\\r"); + break; + case '\\': + FPRINTF(fp, "\\\\"); + break; + case '\f': + FPRINTF(fp, "\\f"); + break; + case '\t': + FPRINTF(fp, "\\t"); + break; + case '\b': + FPRINTF(fp, "\\b"); + break; + default: + if ((c >= 0x00 && c <= 0x1f) || + (c > 0x7f && c <= 0xffff)) { + /* + * Render both Control Characters and Unicode + * characters in the Basic Multilingual Plane + * as JSON-escaped multibyte characters. + */ + FPRINTF(fp, "\\u%04x", (int)(0xffff & c)); + } else if (c >= 0x20 && c <= 0x7f) { + /* + * Render other 7-bit ASCII characters directly + * and drop other, unrepresentable characters. + */ + FPRINTF(fp, "%c", (int)(0xff & c)); + } + break; + } + input += sz; + } + + if (sz == (size_t)-1 || sz == (size_t)-2) { + /* + * We last read an invalid multibyte character sequence, + * so return an error. + */ + return (-1); + } + + FPRINTF(fp, "\""); + return (0); +} + +/* + * Dump a JSON-formatted representation of an nvlist to the provided FILE *. + * This routine does not output any new-lines or additional whitespace other + * than that contained in strings, nor does it call fflush(3C). + */ +int +nvlist_print_json(FILE *fp, nvlist_t *nvl) +{ + nvpair_t *curr; + boolean_t first = B_TRUE; + + FPRINTF(fp, "{"); + + for (curr = nvlist_next_nvpair(nvl, NULL); curr; + curr = nvlist_next_nvpair(nvl, curr)) { + data_type_t type = nvpair_type(curr); + + if (!first) + FPRINTF(fp, ","); + else + first = B_FALSE; + + if (nvlist_print_json_string(fp, nvpair_name(curr)) == -1) + return (-1); + FPRINTF(fp, ":"); + + switch (type) { + case DATA_TYPE_STRING: { + char *string = fnvpair_value_string(curr); + if (nvlist_print_json_string(fp, string) == -1) + return (-1); + break; + } + + case DATA_TYPE_BOOLEAN: { + FPRINTF(fp, "true"); + break; + } + + case DATA_TYPE_BOOLEAN_VALUE: { + FPRINTF(fp, "%s", fnvpair_value_boolean_value(curr) == + B_TRUE ? "true" : "false"); + break; + } + + case DATA_TYPE_BYTE: { + FPRINTF(fp, "%hhu", fnvpair_value_byte(curr)); + break; + } + + case DATA_TYPE_INT8: { + FPRINTF(fp, "%hhd", fnvpair_value_int8(curr)); + break; + } + + case DATA_TYPE_UINT8: { + FPRINTF(fp, "%hhu", fnvpair_value_uint8_t(curr)); + break; + } + + case DATA_TYPE_INT16: { + FPRINTF(fp, "%hd", fnvpair_value_int16(curr)); + break; + } + + case DATA_TYPE_UINT16: { + FPRINTF(fp, "%hu", fnvpair_value_uint16(curr)); + break; + } + + case DATA_TYPE_INT32: { + FPRINTF(fp, "%d", fnvpair_value_int32(curr)); + break; + } + + case DATA_TYPE_UINT32: { + FPRINTF(fp, "%u", fnvpair_value_uint32(curr)); + break; + } + + case DATA_TYPE_INT64: { + FPRINTF(fp, "%lld", + (long long)fnvpair_value_int64(curr)); + break; + } + + case DATA_TYPE_UINT64: { + FPRINTF(fp, "%llu", + (unsigned long long)fnvpair_value_uint64(curr)); + break; + } + + case DATA_TYPE_HRTIME: { + hrtime_t val; + VERIFY0(nvpair_value_hrtime(curr, &val)); + FPRINTF(fp, "%llu", (unsigned long long)val); + break; + } + + case DATA_TYPE_DOUBLE: { + double val; + VERIFY0(nvpair_value_double(curr, &val)); + FPRINTF(fp, "%f", val); + break; + } + + case DATA_TYPE_NVLIST: { + if (nvlist_print_json(fp, + fnvpair_value_nvlist(curr)) == -1) + return (-1); + break; + } + + case DATA_TYPE_STRING_ARRAY: { + char **val; + uint_t valsz, i; + VERIFY0(nvpair_value_string_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + if (nvlist_print_json_string(fp, val[i]) == -1) + return (-1); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_NVLIST_ARRAY: { + nvlist_t **val; + uint_t valsz, i; + VERIFY0(nvpair_value_nvlist_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + if (nvlist_print_json(fp, val[i]) == -1) + return (-1); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_BOOLEAN_ARRAY: { + boolean_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_boolean_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, val[i] == B_TRUE ? + "true" : "false"); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_BYTE_ARRAY: { + uchar_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_byte_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%hhu", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_UINT8_ARRAY: { + uint8_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_uint8_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%hhu", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_INT8_ARRAY: { + int8_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_int8_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%hd", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_UINT16_ARRAY: { + uint16_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_uint16_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%hu", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_INT16_ARRAY: { + int16_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_int16_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%hhd", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_UINT32_ARRAY: { + uint32_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_uint32_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%u", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_INT32_ARRAY: { + int32_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_int32_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%d", val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_UINT64_ARRAY: { + uint64_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_uint64_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%llu", + (unsigned long long)val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_INT64_ARRAY: { + int64_t *val; + uint_t valsz, i; + VERIFY0(nvpair_value_int64_array(curr, &val, &valsz)); + FPRINTF(fp, "["); + for (i = 0; i < valsz; i++) { + if (i > 0) + FPRINTF(fp, ","); + FPRINTF(fp, "%lld", (long long)val[i]); + } + FPRINTF(fp, "]"); + break; + } + + case DATA_TYPE_UNKNOWN: + return (-1); + } + } + + FPRINTF(fp, "}"); + return (0); +}
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