Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 1 | /* |
| 2 | * String parsing visitor |
| 3 | * |
Eric Blake | 08f9541 | 2016-01-29 06:48:59 -0700 | [diff] [blame] | 4 | * Copyright Red Hat, Inc. 2012-2016 |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 5 | * |
| 6 | * Author: Paolo Bonzini <pbonzini@redhat.com> |
| 7 | * |
| 8 | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. |
| 9 | * See the COPYING.LIB file in the top-level directory. |
| 10 | * |
| 11 | */ |
| 12 | |
Peter Maydell | cbf2115 | 2016-01-29 17:49:57 +0000 | [diff] [blame] | 13 | #include "qemu/osdep.h" |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 14 | #include "qemu-common.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 15 | #include "qapi/string-input-visitor.h" |
| 16 | #include "qapi/visitor-impl.h" |
| 17 | #include "qapi/qmp/qerror.h" |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 18 | #include "qemu/option.h" |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 19 | #include "qemu/queue.h" |
| 20 | #include "qemu/range.h" |
| 21 | |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 22 | |
| 23 | struct StringInputVisitor |
| 24 | { |
| 25 | Visitor visitor; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 26 | |
| 27 | bool head; |
| 28 | |
| 29 | GList *ranges; |
| 30 | GList *cur_range; |
| 31 | int64_t cur; |
| 32 | |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 33 | const char *string; |
| 34 | }; |
| 35 | |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 36 | static StringInputVisitor *to_siv(Visitor *v) |
| 37 | { |
| 38 | return container_of(v, StringInputVisitor, visitor); |
| 39 | } |
| 40 | |
Michael S. Tsirkin | 0d15668 | 2014-06-16 18:07:03 +0300 | [diff] [blame] | 41 | static void free_range(void *range, void *dummy) |
| 42 | { |
| 43 | g_free(range); |
| 44 | } |
| 45 | |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 46 | static void parse_str(StringInputVisitor *siv, Error **errp) |
| 47 | { |
| 48 | char *str = (char *) siv->string; |
| 49 | long long start, end; |
| 50 | Range *cur; |
| 51 | char *endptr; |
| 52 | |
| 53 | if (siv->ranges) { |
| 54 | return; |
| 55 | } |
| 56 | |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 57 | do { |
Michael S. Tsirkin | c210ee9 | 2014-06-18 17:50:07 +0300 | [diff] [blame] | 58 | errno = 0; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 59 | start = strtoll(str, &endptr, 0); |
Michael S. Tsirkin | c210ee9 | 2014-06-18 17:50:07 +0300 | [diff] [blame] | 60 | if (errno == 0 && endptr > str) { |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 61 | if (*endptr == '\0') { |
| 62 | cur = g_malloc0(sizeof(*cur)); |
| 63 | cur->begin = start; |
| 64 | cur->end = start + 1; |
| 65 | siv->ranges = g_list_insert_sorted_merged(siv->ranges, cur, |
| 66 | range_compare); |
| 67 | cur = NULL; |
| 68 | str = NULL; |
| 69 | } else if (*endptr == '-') { |
| 70 | str = endptr + 1; |
Michael S. Tsirkin | c210ee9 | 2014-06-18 17:50:07 +0300 | [diff] [blame] | 71 | errno = 0; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 72 | end = strtoll(str, &endptr, 0); |
Michael S. Tsirkin | c210ee9 | 2014-06-18 17:50:07 +0300 | [diff] [blame] | 73 | if (errno == 0 && endptr > str && start <= end && |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 74 | (start > INT64_MAX - 65536 || |
| 75 | end < start + 65536)) { |
| 76 | if (*endptr == '\0') { |
| 77 | cur = g_malloc0(sizeof(*cur)); |
| 78 | cur->begin = start; |
| 79 | cur->end = end + 1; |
| 80 | siv->ranges = |
| 81 | g_list_insert_sorted_merged(siv->ranges, |
| 82 | cur, |
| 83 | range_compare); |
| 84 | cur = NULL; |
| 85 | str = NULL; |
| 86 | } else if (*endptr == ',') { |
| 87 | str = endptr + 1; |
| 88 | cur = g_malloc0(sizeof(*cur)); |
| 89 | cur->begin = start; |
| 90 | cur->end = end + 1; |
| 91 | siv->ranges = |
| 92 | g_list_insert_sorted_merged(siv->ranges, |
| 93 | cur, |
| 94 | range_compare); |
| 95 | cur = NULL; |
| 96 | } else { |
| 97 | goto error; |
| 98 | } |
| 99 | } else { |
| 100 | goto error; |
| 101 | } |
| 102 | } else if (*endptr == ',') { |
| 103 | str = endptr + 1; |
| 104 | cur = g_malloc0(sizeof(*cur)); |
| 105 | cur->begin = start; |
| 106 | cur->end = start + 1; |
| 107 | siv->ranges = g_list_insert_sorted_merged(siv->ranges, |
| 108 | cur, |
| 109 | range_compare); |
| 110 | cur = NULL; |
| 111 | } else { |
| 112 | goto error; |
| 113 | } |
| 114 | } else { |
| 115 | goto error; |
| 116 | } |
| 117 | } while (str); |
| 118 | |
| 119 | return; |
| 120 | error: |
Michael S. Tsirkin | 0d15668 | 2014-06-16 18:07:03 +0300 | [diff] [blame] | 121 | g_list_foreach(siv->ranges, free_range, NULL); |
| 122 | g_list_free(siv->ranges); |
| 123 | siv->ranges = NULL; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | static void |
| 127 | start_list(Visitor *v, const char *name, Error **errp) |
| 128 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 129 | StringInputVisitor *siv = to_siv(v); |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 130 | |
| 131 | parse_str(siv, errp); |
| 132 | |
| 133 | siv->cur_range = g_list_first(siv->ranges); |
| 134 | if (siv->cur_range) { |
| 135 | Range *r = siv->cur_range->data; |
| 136 | if (r) { |
| 137 | siv->cur = r->begin; |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | |
Eric Blake | e65d89b | 2016-02-17 23:48:23 -0700 | [diff] [blame^] | 142 | static GenericList *next_list(Visitor *v, GenericList **list, size_t size) |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 143 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 144 | StringInputVisitor *siv = to_siv(v); |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 145 | GenericList **link; |
| 146 | Range *r; |
| 147 | |
| 148 | if (!siv->ranges || !siv->cur_range) { |
| 149 | return NULL; |
| 150 | } |
| 151 | |
| 152 | r = siv->cur_range->data; |
| 153 | if (!r) { |
| 154 | return NULL; |
| 155 | } |
| 156 | |
| 157 | if (siv->cur < r->begin || siv->cur >= r->end) { |
| 158 | siv->cur_range = g_list_next(siv->cur_range); |
| 159 | if (!siv->cur_range) { |
| 160 | return NULL; |
| 161 | } |
| 162 | r = siv->cur_range->data; |
| 163 | if (!r) { |
| 164 | return NULL; |
| 165 | } |
| 166 | siv->cur = r->begin; |
| 167 | } |
| 168 | |
| 169 | if (siv->head) { |
| 170 | link = list; |
| 171 | siv->head = false; |
| 172 | } else { |
| 173 | link = &(*list)->next; |
| 174 | } |
| 175 | |
Eric Blake | e65d89b | 2016-02-17 23:48:23 -0700 | [diff] [blame^] | 176 | *link = g_malloc0(size); |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 177 | return *link; |
| 178 | } |
| 179 | |
Eric Blake | 08f9541 | 2016-01-29 06:48:59 -0700 | [diff] [blame] | 180 | static void end_list(Visitor *v) |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 181 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 182 | StringInputVisitor *siv = to_siv(v); |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 183 | siv->head = true; |
| 184 | } |
| 185 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 186 | static void parse_type_int64(Visitor *v, const char *name, int64_t *obj, |
Eric Blake | 4c40314 | 2016-01-29 06:48:49 -0700 | [diff] [blame] | 187 | Error **errp) |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 188 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 189 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 190 | |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 191 | if (!siv->string) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 192 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 193 | "integer"); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 194 | return; |
| 195 | } |
| 196 | |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 197 | parse_str(siv, errp); |
| 198 | |
| 199 | if (!siv->ranges) { |
| 200 | goto error; |
| 201 | } |
| 202 | |
| 203 | if (!siv->cur_range) { |
| 204 | Range *r; |
| 205 | |
| 206 | siv->cur_range = g_list_first(siv->ranges); |
| 207 | if (!siv->cur_range) { |
| 208 | goto error; |
| 209 | } |
| 210 | |
| 211 | r = siv->cur_range->data; |
| 212 | if (!r) { |
| 213 | goto error; |
| 214 | } |
| 215 | |
| 216 | siv->cur = r->begin; |
| 217 | } |
| 218 | |
| 219 | *obj = siv->cur; |
| 220 | siv->cur++; |
| 221 | return; |
| 222 | |
| 223 | error: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 224 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, |
| 225 | "an int64 value or range"); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 226 | } |
| 227 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 228 | static void parse_type_uint64(Visitor *v, const char *name, uint64_t *obj, |
Eric Blake | f755dea | 2016-01-29 06:48:50 -0700 | [diff] [blame] | 229 | Error **errp) |
| 230 | { |
| 231 | /* FIXME: parse_type_int64 mishandles values over INT64_MAX */ |
| 232 | int64_t i; |
| 233 | Error *err = NULL; |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 234 | parse_type_int64(v, name, &i, &err); |
Eric Blake | f755dea | 2016-01-29 06:48:50 -0700 | [diff] [blame] | 235 | if (err) { |
| 236 | error_propagate(errp, err); |
| 237 | } else { |
| 238 | *obj = i; |
| 239 | } |
| 240 | } |
| 241 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 242 | static void parse_type_size(Visitor *v, const char *name, uint64_t *obj, |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 243 | Error **errp) |
| 244 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 245 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 246 | Error *err = NULL; |
| 247 | uint64_t val; |
| 248 | |
| 249 | if (siv->string) { |
| 250 | parse_option_size(name, siv->string, &val, &err); |
| 251 | } else { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 252 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 253 | "size"); |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 254 | return; |
| 255 | } |
| 256 | if (err) { |
| 257 | error_propagate(errp, err); |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | *obj = val; |
| 262 | } |
| 263 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 264 | static void parse_type_bool(Visitor *v, const char *name, bool *obj, |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 265 | Error **errp) |
| 266 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 267 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 268 | |
| 269 | if (siv->string) { |
| 270 | if (!strcasecmp(siv->string, "on") || |
| 271 | !strcasecmp(siv->string, "yes") || |
| 272 | !strcasecmp(siv->string, "true")) { |
| 273 | *obj = true; |
| 274 | return; |
| 275 | } |
| 276 | if (!strcasecmp(siv->string, "off") || |
| 277 | !strcasecmp(siv->string, "no") || |
| 278 | !strcasecmp(siv->string, "false")) { |
| 279 | *obj = false; |
| 280 | return; |
| 281 | } |
| 282 | } |
| 283 | |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 284 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 285 | "boolean"); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 286 | } |
| 287 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 288 | static void parse_type_str(Visitor *v, const char *name, char **obj, |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 289 | Error **errp) |
| 290 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 291 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 292 | if (siv->string) { |
| 293 | *obj = g_strdup(siv->string); |
| 294 | } else { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 295 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 296 | "string"); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 300 | static void parse_type_number(Visitor *v, const char *name, double *obj, |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 301 | Error **errp) |
| 302 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 303 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 304 | char *endp = (char *) siv->string; |
| 305 | double val; |
| 306 | |
| 307 | errno = 0; |
| 308 | if (siv->string) { |
| 309 | val = strtod(siv->string, &endp); |
| 310 | } |
| 311 | if (!siv->string || errno || endp == siv->string || *endp) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 312 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", |
| 313 | "number"); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 314 | return; |
| 315 | } |
| 316 | |
| 317 | *obj = val; |
| 318 | } |
| 319 | |
Eric Blake | 0b2a0d6 | 2016-01-29 06:48:56 -0700 | [diff] [blame] | 320 | static void parse_optional(Visitor *v, const char *name, bool *present) |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 321 | { |
Eric Blake | d7bea75 | 2016-01-29 06:48:38 -0700 | [diff] [blame] | 322 | StringInputVisitor *siv = to_siv(v); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 323 | |
| 324 | if (!siv->string) { |
| 325 | *present = false; |
| 326 | return; |
| 327 | } |
| 328 | |
| 329 | *present = true; |
| 330 | } |
| 331 | |
| 332 | Visitor *string_input_get_visitor(StringInputVisitor *v) |
| 333 | { |
| 334 | return &v->visitor; |
| 335 | } |
| 336 | |
| 337 | void string_input_visitor_cleanup(StringInputVisitor *v) |
| 338 | { |
Michael S. Tsirkin | 0d15668 | 2014-06-16 18:07:03 +0300 | [diff] [blame] | 339 | g_list_foreach(v->ranges, free_range, NULL); |
| 340 | g_list_free(v->ranges); |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 341 | g_free(v); |
| 342 | } |
| 343 | |
| 344 | StringInputVisitor *string_input_visitor_new(const char *str) |
| 345 | { |
| 346 | StringInputVisitor *v; |
| 347 | |
| 348 | v = g_malloc0(sizeof(*v)); |
| 349 | |
| 350 | v->visitor.type_enum = input_type_enum; |
Eric Blake | 4c40314 | 2016-01-29 06:48:49 -0700 | [diff] [blame] | 351 | v->visitor.type_int64 = parse_type_int64; |
Eric Blake | f755dea | 2016-01-29 06:48:50 -0700 | [diff] [blame] | 352 | v->visitor.type_uint64 = parse_type_uint64; |
Paolo Bonzini | a5829cc | 2014-02-08 11:01:44 +0100 | [diff] [blame] | 353 | v->visitor.type_size = parse_type_size; |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 354 | v->visitor.type_bool = parse_type_bool; |
| 355 | v->visitor.type_str = parse_type_str; |
| 356 | v->visitor.type_number = parse_type_number; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 357 | v->visitor.start_list = start_list; |
| 358 | v->visitor.next_list = next_list; |
| 359 | v->visitor.end_list = end_list; |
Markus Armbruster | e2cd0f4 | 2014-05-07 09:53:46 +0200 | [diff] [blame] | 360 | v->visitor.optional = parse_optional; |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 361 | |
| 362 | v->string = str; |
Hu Tao | 659268f | 2014-06-10 19:15:27 +0800 | [diff] [blame] | 363 | v->head = true; |
Paolo Bonzini | a020f98 | 2012-02-09 09:36:37 +0100 | [diff] [blame] | 364 | return v; |
| 365 | } |