Commit | Line | Data |
---|---|---|
68270f0f | 1 | /* |
4b2b86f2 | 2 | * Copyright (C) 2014 EfficiOS Inc. |
68270f0f | 3 | * |
9d16b343 | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
68270f0f | 5 | * |
68270f0f JRJ |
6 | */ |
7 | ||
8 | /* | |
9 | * This script validate and xml from an xsd. | |
10 | * argv[1] Path of the xsd | |
11 | * argv[2] Path to the XML to be validated | |
12 | */ | |
13 | ||
68270f0f JRJ |
14 | #include <ctype.h> |
15 | #include <stdio.h> | |
16 | #include <stdlib.h> | |
17 | #include <string.h> | |
18 | #include <inttypes.h> | |
19 | #include <dirent.h> | |
20 | #include <unistd.h> | |
21 | #include <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | ||
24 | #include <libxml/xmlschemas.h> | |
25 | #include <libxml/parser.h> | |
26 | ||
27 | #include <lttng/lttng-error.h> | |
c9e313bc | 28 | #include <common/macros.hpp> |
d22ad5f8 | 29 | |
68270f0f JRJ |
30 | struct validation_ctx { |
31 | xmlSchemaParserCtxtPtr parser_ctx; | |
32 | xmlSchemaPtr schema; | |
33 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
34 | }; | |
35 | ||
36 | enum command_err_code { | |
37 | CMD_SUCCESS = 0, | |
38 | CMD_ERROR | |
39 | }; | |
40 | ||
d22ad5f8 | 41 | static ATTR_FORMAT_PRINTF(2, 3) |
f46376a1 MJ |
42 | void xml_error_handler(void *ctx __attribute__((unused)), |
43 | const char *format, ...) | |
68270f0f JRJ |
44 | { |
45 | char *err_msg; | |
46 | va_list args; | |
47 | int ret; | |
48 | ||
49 | va_start(args, format); | |
50 | ret = vasprintf(&err_msg, format, args); | |
51 | va_end(args); | |
52 | if (ret == -1) { | |
53 | fprintf(stderr, "ERR: %s\n", | |
54 | "String allocation failed in xml error handle"); | |
55 | return; | |
56 | } | |
57 | ||
58 | fprintf(stderr, "XML Error: %s\n", err_msg); | |
59 | free(err_msg); | |
60 | } | |
61 | ||
62 | static | |
63 | void fini_validation_ctx( | |
64 | struct validation_ctx *ctx) | |
65 | { | |
66 | if (ctx->parser_ctx) { | |
67 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
68 | } | |
69 | ||
70 | if (ctx->schema) { | |
71 | xmlSchemaFree(ctx->schema); | |
72 | } | |
73 | ||
74 | if (ctx->schema_validation_ctx) { | |
75 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
76 | } | |
77 | ||
78 | memset(ctx, 0, sizeof(struct validation_ctx)); | |
79 | } | |
80 | ||
81 | static | |
82 | int init_validation_ctx( | |
83 | struct validation_ctx *ctx, char *xsd_path) | |
84 | { | |
85 | int ret; | |
86 | ||
87 | if (!xsd_path) { | |
88 | ret = -LTTNG_ERR_NOMEM; | |
89 | goto end; | |
90 | } | |
91 | ||
92 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); | |
93 | if (!ctx->parser_ctx) { | |
94 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
95 | goto end; | |
96 | } | |
97 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
98 | xml_error_handler, NULL); | |
99 | ||
100 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
101 | if (!ctx->schema) { | |
102 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
103 | goto end; | |
104 | } | |
105 | ||
106 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
107 | if (!ctx->schema_validation_ctx) { | |
108 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
109 | goto end; | |
110 | } | |
111 | ||
112 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
113 | xml_error_handler, NULL); | |
114 | ret = 0; | |
115 | ||
116 | end: | |
117 | if (ret) { | |
118 | fini_validation_ctx(ctx); | |
119 | } | |
120 | return ret; | |
121 | } | |
122 | ||
123 | static int validate_xml(const char *xml_file_path, struct validation_ctx *ctx) | |
124 | { | |
125 | int ret; | |
126 | xmlDocPtr doc = NULL; | |
127 | ||
a0377dfe FD |
128 | LTTNG_ASSERT(xml_file_path); |
129 | LTTNG_ASSERT(ctx); | |
68270f0f JRJ |
130 | |
131 | /* Open the document */ | |
132 | doc = xmlParseFile(xml_file_path); | |
133 | if (!doc) { | |
134 | ret = LTTNG_ERR_MI_IO_FAIL; | |
135 | goto end; | |
136 | } | |
137 | ||
138 | /* Validate against the validation ctx (xsd) */ | |
139 | ret = xmlSchemaValidateDoc(ctx->schema_validation_ctx, doc); | |
140 | if (ret) { | |
141 | fprintf(stderr, "ERR: %s\n", "XML is not valid againt provided XSD"); | |
142 | ret = CMD_ERROR; | |
143 | goto end; | |
144 | } | |
145 | ||
146 | ret = CMD_SUCCESS; | |
147 | end: | |
148 | return ret; | |
149 | ||
150 | ||
151 | } | |
f46376a1 | 152 | int main(int argc, char **argv) |
68270f0f JRJ |
153 | { |
154 | int ret; | |
1c9a0b0e | 155 | struct validation_ctx ctx = {}; |
68270f0f JRJ |
156 | |
157 | /* Check if we have all argument */ | |
158 | if (argc < 3) { | |
159 | fprintf(stderr, "ERR: %s\n", "Missing arguments"); | |
160 | ret = CMD_ERROR; | |
161 | goto end; | |
162 | } | |
163 | ||
164 | /* Check if xsd file exist */ | |
165 | ret = access(argv[1], F_OK); | |
166 | if (ret < 0) { | |
167 | fprintf(stderr, "ERR: %s\n", "Xsd path not valid"); | |
168 | goto end; | |
169 | } | |
170 | ||
171 | /* Check if xml to validate exist */ | |
172 | ret = access(argv[2], F_OK); | |
173 | if (ret < 0) { | |
174 | fprintf(stderr, "ERR: %s\n", "XML path not valid"); | |
175 | goto end; | |
176 | } | |
177 | ||
178 | /* initialize the validation ctx */ | |
179 | ret = init_validation_ctx(&ctx, argv[1]); | |
180 | if (ret) { | |
181 | goto end; | |
182 | } | |
183 | ||
184 | ret = validate_xml(argv[2], &ctx); | |
185 | ||
186 | fini_validation_ctx(&ctx); | |
187 | ||
188 | end: | |
189 | return ret; | |
190 | } |