Commit | Line | Data |
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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> | |
a0377dfe | 28 | #include <common/macros.h> |
68270f0f | 29 | |
d22ad5f8 SM |
30 | #include <common/macros.h> |
31 | ||
68270f0f JRJ |
32 | struct validation_ctx { |
33 | xmlSchemaParserCtxtPtr parser_ctx; | |
34 | xmlSchemaPtr schema; | |
35 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
36 | }; | |
37 | ||
38 | enum command_err_code { | |
39 | CMD_SUCCESS = 0, | |
40 | CMD_ERROR | |
41 | }; | |
42 | ||
d22ad5f8 | 43 | static ATTR_FORMAT_PRINTF(2, 3) |
68270f0f JRJ |
44 | void xml_error_handler(void *ctx, const char *format, ...) |
45 | { | |
46 | char *err_msg; | |
47 | va_list args; | |
48 | int ret; | |
49 | ||
50 | va_start(args, format); | |
51 | ret = vasprintf(&err_msg, format, args); | |
52 | va_end(args); | |
53 | if (ret == -1) { | |
54 | fprintf(stderr, "ERR: %s\n", | |
55 | "String allocation failed in xml error handle"); | |
56 | return; | |
57 | } | |
58 | ||
59 | fprintf(stderr, "XML Error: %s\n", err_msg); | |
60 | free(err_msg); | |
61 | } | |
62 | ||
63 | static | |
64 | void fini_validation_ctx( | |
65 | struct validation_ctx *ctx) | |
66 | { | |
67 | if (ctx->parser_ctx) { | |
68 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
69 | } | |
70 | ||
71 | if (ctx->schema) { | |
72 | xmlSchemaFree(ctx->schema); | |
73 | } | |
74 | ||
75 | if (ctx->schema_validation_ctx) { | |
76 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
77 | } | |
78 | ||
79 | memset(ctx, 0, sizeof(struct validation_ctx)); | |
80 | } | |
81 | ||
82 | static | |
83 | int init_validation_ctx( | |
84 | struct validation_ctx *ctx, char *xsd_path) | |
85 | { | |
86 | int ret; | |
87 | ||
88 | if (!xsd_path) { | |
89 | ret = -LTTNG_ERR_NOMEM; | |
90 | goto end; | |
91 | } | |
92 | ||
93 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); | |
94 | if (!ctx->parser_ctx) { | |
95 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
96 | goto end; | |
97 | } | |
98 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
99 | xml_error_handler, NULL); | |
100 | ||
101 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
102 | if (!ctx->schema) { | |
103 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
104 | goto end; | |
105 | } | |
106 | ||
107 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
108 | if (!ctx->schema_validation_ctx) { | |
109 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
110 | goto end; | |
111 | } | |
112 | ||
113 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
114 | xml_error_handler, NULL); | |
115 | ret = 0; | |
116 | ||
117 | end: | |
118 | if (ret) { | |
119 | fini_validation_ctx(ctx); | |
120 | } | |
121 | return ret; | |
122 | } | |
123 | ||
124 | static int validate_xml(const char *xml_file_path, struct validation_ctx *ctx) | |
125 | { | |
126 | int ret; | |
127 | xmlDocPtr doc = NULL; | |
128 | ||
a0377dfe FD |
129 | LTTNG_ASSERT(xml_file_path); |
130 | LTTNG_ASSERT(ctx); | |
68270f0f JRJ |
131 | |
132 | /* Open the document */ | |
133 | doc = xmlParseFile(xml_file_path); | |
134 | if (!doc) { | |
135 | ret = LTTNG_ERR_MI_IO_FAIL; | |
136 | goto end; | |
137 | } | |
138 | ||
139 | /* Validate against the validation ctx (xsd) */ | |
140 | ret = xmlSchemaValidateDoc(ctx->schema_validation_ctx, doc); | |
141 | if (ret) { | |
142 | fprintf(stderr, "ERR: %s\n", "XML is not valid againt provided XSD"); | |
143 | ret = CMD_ERROR; | |
144 | goto end; | |
145 | } | |
146 | ||
147 | ret = CMD_SUCCESS; | |
148 | end: | |
149 | return ret; | |
150 | ||
151 | ||
152 | } | |
153 | int main(int argc, char **argv, char *env[]) | |
154 | { | |
155 | int ret; | |
a90d21b3 | 156 | struct validation_ctx ctx = { 0 }; |
68270f0f JRJ |
157 | |
158 | /* Check if we have all argument */ | |
159 | if (argc < 3) { | |
160 | fprintf(stderr, "ERR: %s\n", "Missing arguments"); | |
161 | ret = CMD_ERROR; | |
162 | goto end; | |
163 | } | |
164 | ||
165 | /* Check if xsd file exist */ | |
166 | ret = access(argv[1], F_OK); | |
167 | if (ret < 0) { | |
168 | fprintf(stderr, "ERR: %s\n", "Xsd path not valid"); | |
169 | goto end; | |
170 | } | |
171 | ||
172 | /* Check if xml to validate exist */ | |
173 | ret = access(argv[2], F_OK); | |
174 | if (ret < 0) { | |
175 | fprintf(stderr, "ERR: %s\n", "XML path not valid"); | |
176 | goto end; | |
177 | } | |
178 | ||
179 | /* initialize the validation ctx */ | |
180 | ret = init_validation_ctx(&ctx, argv[1]); | |
181 | if (ret) { | |
182 | goto end; | |
183 | } | |
184 | ||
185 | ret = validate_xml(argv[2], &ctx); | |
186 | ||
187 | fini_validation_ctx(&ctx); | |
188 | ||
189 | end: | |
190 | return ret; | |
191 | } |