| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "mcp-params.h" |
| 4 | |
| 5 | // Utility function to check if a string contains wildcards |
| 6 | static bool contains_wildcards(const char *str) { |
| 7 | if (!str || !*str) return false; |
| 8 | |
| 9 | if(*str == '!') { |
| 10 | // simple patterns negative match (only if it starts with '!') |
| 11 | return true; |
| 12 | } |
| 13 | |
| 14 | // Check for common wildcard characters |
| 15 | for (const char *p = str; *p; p++) { |
| 16 | if (*p == '*') { |
| 17 | // simple patterns wildcard match |
| 18 | return true; |
| 19 | } |
| 20 | |
| 21 | // let's check for simple pattern separators |
| 22 | for (const char *c = SIMPLE_PATTERN_DEFAULT_WEB_SEPARATORS; *c ; c++) { |
| 23 | if (*p == *c) |
| 24 | return true; |
| 25 | } |
| 26 | } |
| 27 | return false; |
| 28 | } |
| 29 | |
| 30 | // Convert JSON array to pipe-separated string |
| 31 | static int mcp_params_array_to_pipe_string( |
| 32 | struct json_object *array_obj, |
| 33 | BUFFER *output_buffer, |
| 34 | bool allow_wildcards |
| 35 | ) { |
| 36 | if (!array_obj || !output_buffer) |
| 37 | return -1; |
| 38 | |
| 39 | if (!json_object_is_type(array_obj, json_type_array)) |
| 40 | return -1; |
| 41 | |
| 42 | size_t array_len = json_object_array_length(array_obj); |
| 43 | if (array_len == 0) |
| 44 | return 0; // Empty array is valid |
| 45 | |
| 46 | for (size_t i = 0; i < array_len; i++) { |
| 47 | struct json_object *item = json_object_array_get_idx(array_obj, i); |
| 48 | if (!json_object_is_type(item, json_type_string)) |
| 49 | return -1; |
| 50 | |
| 51 | const char *str = json_object_get_string(item); |
| 52 | if (!str || !*str) |
| 53 | return -1; |
| 54 | |
| 55 | // Check for wildcards if not allowed |
| 56 | if (!allow_wildcards && contains_wildcards(str)) |
| 57 | return -2; |
| 58 | |
| 59 | if (i > 0) |
| 60 | buffer_strcat(output_buffer, "|"); |
| 61 | buffer_strcat(output_buffer, str); |
| 62 | } |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | // Parse array parameters (nodes, instances, dimensions) |
| 68 | BUFFER *mcp_params_parse_array_to_pattern( |
| 69 | struct json_object *params, |
| 70 | const char *param_name, |
| 71 | bool required, |
| 72 | bool allow_wildcards, |
| 73 | const char *list_tool, |
| 74 | BUFFER *error |
| 75 | ) { |
| 76 | struct json_object *array_obj = NULL; |
| 77 | |
| 78 | if (!json_object_object_get_ex(params, param_name, &array_obj) || !array_obj) { |
| 79 | if (required && error) { |
| 80 | buffer_flush(error); |
| 81 | buffer_sprintf(error, "Missing required parameter '%s'", param_name); |
| 82 | } |
| 83 | return NULL; // Parameter not provided |
| 84 | } |
| 85 | |
| 86 | if (!json_object_is_type(array_obj, json_type_array)) { |
| 87 | if (error) { |
| 88 | buffer_flush(error); |
| 89 | buffer_sprintf(error, "%s must be an array of strings, not %s", |
| 90 | param_name, json_type_to_name(json_object_get_type(array_obj))); |
| 91 | } |
| 92 | return NULL; |
| 93 | } |
| 94 | |
| 95 | // Check for an empty array if required |
| 96 | if (required && json_object_array_length(array_obj) == 0) { |
| 97 | if (error) { |
| 98 | buffer_flush(error); |
| 99 | buffer_sprintf(error, "The '%s' parameter cannot be an empty array", param_name); |
| 100 | } |
| 101 | return NULL; |
| 102 | } |
| 103 | |
| 104 | BUFFER *wb = buffer_create(256, NULL); |
| 105 | int result = mcp_params_array_to_pipe_string(array_obj, wb, allow_wildcards); |
| 106 | |
| 107 | if (result == -2) { |
| 108 | buffer_free(wb); |
| 109 | if (error) { |
| 110 | buffer_flush(error); |
| 111 | if (allow_wildcards) { |
| 112 | buffer_strcat(error, "invalid array format"); |
| 113 | } else { |
| 114 | if (list_tool) { |
| 115 | buffer_sprintf(error, |
| 116 | "must contain exact values, not patterns. " |
| 117 | "Wildcards are not supported. " |
| 118 | "Use the '%s' tool to discover exact values.", list_tool); |
| 119 | } else { |
| 120 | buffer_strcat(error, |
| 121 | "must contain exact values, not patterns. Wildcards are not supported."); |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | return NULL; |
| 126 | } else if (result != 0) { |
| 127 | buffer_free(wb); |
| 128 | if (error) { |
| 129 | buffer_flush(error); |
| 130 | buffer_sprintf(error, "%s must be an array of strings", param_name); |
| 131 | } |
| 132 | return NULL; |
| 133 | } |
| 134 | |
| 135 | return wb; // Success - return the buffer |
| 136 | } |
| 137 | |
| 138 | // Parse labels object parameter |
| 139 | BUFFER *mcp_params_parse_labels_object( |
| 140 | struct json_object *params, |
| 141 | const char *list_tool, |
| 142 | BUFFER *error |
| 143 | ) { |
| 144 | struct json_object *labels_obj = NULL; |
| 145 | |
| 146 | if (!json_object_object_get_ex(params, "labels", &labels_obj) || !labels_obj) |
| 147 | return NULL; // Parameter not provided |
| 148 | |
| 149 | if (!json_object_is_type(labels_obj, json_type_object)) { |
| 150 | if (error) { |
| 151 | buffer_flush(error); |
| 152 | buffer_strcat(error, "must be an object where each key maps to an array of string values"); |
| 153 | } |
| 154 | return NULL; |
| 155 | } |
| 156 | |
| 157 | BUFFER *wb = buffer_create(256, NULL); |
| 158 | int first = 1; |
| 159 | |
| 160 | struct json_object_iterator it = json_object_iter_begin(labels_obj); |
| 161 | struct json_object_iterator itEnd = json_object_iter_end(labels_obj); |
| 162 | |
| 163 | while (!json_object_iter_equal(&it, &itEnd)) { |
| 164 | const char *key = json_object_iter_peek_name(&it); |
| 165 | struct json_object *val = json_object_iter_peek_value(&it); |
| 166 | |
| 167 | if (!json_object_is_type(val, json_type_array)) { |
| 168 | buffer_free(wb); |
| 169 | if (error) { |
| 170 | buffer_flush(error); |
| 171 | buffer_strcat(error, "each label key must map to an array of string values"); |
| 172 | } |
| 173 | return NULL; |
| 174 | } |
| 175 | |
| 176 | size_t array_len = json_object_array_length(val); |
| 177 | for (size_t i = 0; i < array_len; i++) { |
| 178 | struct json_object *item = json_object_array_get_idx(val, i); |
| 179 | if (!json_object_is_type(item, json_type_string)) { |
| 180 | buffer_free(wb); |
| 181 | if (error) { |
| 182 | buffer_flush(error); |
| 183 | buffer_strcat(error, "label values must be strings"); |
| 184 | } |
| 185 | return NULL; |
| 186 | } |
| 187 | |
| 188 | const char *value = json_object_get_string(item); |
| 189 | if (!value || !*value) { |
| 190 | buffer_free(wb); |
| 191 | if (error) { |
| 192 | buffer_flush(error); |
| 193 | buffer_strcat(error, "label values cannot be empty"); |
| 194 | } |
| 195 | return NULL; |
| 196 | } |
| 197 | |
| 198 | // Check for wildcards in label values |
| 199 | if (contains_wildcards(value)) { |
| 200 | buffer_free(wb); |
| 201 | if (error) { |
| 202 | buffer_flush(error); |
| 203 | if (list_tool) { |
| 204 | buffer_sprintf(error, |
| 205 | "label values must be exact values, not patterns. " |
| 206 | "Wildcards are not supported. " |
| 207 | "Use the %s tool to discover available label values.", list_tool); |
| 208 | } else { |
| 209 | buffer_strcat(error, |
| 210 | "label values must be exact values, not patterns. Wildcards are not supported."); |
| 211 | } |
| 212 | } |
| 213 | return NULL; |
| 214 | } |
| 215 | |
| 216 | if (!first) buffer_strcat(wb, "|"); |
| 217 | buffer_sprintf(wb, "%s:%s", key, value); |
| 218 | first = 0; |
| 219 | } |
| 220 | |
| 221 | json_object_iter_next(&it); |
| 222 | } |
| 223 | |
| 224 | return wb; // Success |
| 225 | } |
| 226 | |
| 227 | |
| 228 | // Schema generation functions |
| 229 | |
| 230 | // Add array parameter schema |
| 231 | void mcp_schema_add_array_param( |
| 232 | BUFFER *buffer, |
| 233 | const char *param_name, |
| 234 | const char *title, |
| 235 | const char *description |
| 236 | ) { |
| 237 | buffer_json_member_add_object(buffer, param_name); |
| 238 | { |
| 239 | buffer_json_member_add_string(buffer, "type", "array"); |
| 240 | buffer_json_member_add_string(buffer, "title", title); |
| 241 | buffer_json_member_add_string(buffer, "description", description); |
| 242 | buffer_json_member_add_object(buffer, "items"); |
| 243 | buffer_json_member_add_string(buffer, "type", "string"); |
| 244 | buffer_json_object_close(buffer); // items |
| 245 | } |
| 246 | buffer_json_object_close(buffer); |
| 247 | } |
| 248 | |
| 249 | // Add labels object parameter schema |
| 250 | void mcp_schema_add_labels_object( |
| 251 | BUFFER *buffer, |
| 252 | const char *title, |
| 253 | const char *description |
| 254 | ) { |
| 255 | buffer_json_member_add_object(buffer, "labels"); |
| 256 | { |
| 257 | buffer_json_member_add_string(buffer, "type", "object"); |
| 258 | buffer_json_member_add_string(buffer, "title", |
| 259 | title ? title : "Filter by labels"); |
| 260 | buffer_json_member_add_string(buffer, "description", |
| 261 | description ? description : |
| 262 | "Filter using labels where each key maps to an array of exact values. " |
| 263 | "Values in the same array are ORed, different keys are ANDed. " |
| 264 | "Example: {\"disk_type\": [\"ssd\", \"nvme\"], \"mount_point\": [\"/\"]}\n" |
| 265 | "Note: Wildcards are not supported. Use exact label keys and values only."); |
| 266 | buffer_json_member_add_object(buffer, "additionalProperties"); |
| 267 | { |
| 268 | buffer_json_member_add_string(buffer, "type", "array"); |
| 269 | buffer_json_member_add_object(buffer, "items"); |
| 270 | buffer_json_member_add_string(buffer, "type", "string"); |
| 271 | buffer_json_object_close(buffer); // items |
| 272 | } |
| 273 | buffer_json_object_close(buffer); // additionalProperties |
| 274 | } |
| 275 | buffer_json_object_close(buffer); // labels |
| 276 | } |
| 277 | |
| 278 | // Add time window parameters to the schema |
| 279 | void mcp_schema_add_time_params( |
| 280 | BUFFER *buffer, |
| 281 | const char *time_description_prefix, |
| 282 | bool required |
| 283 | ) { |
| 284 | // Build descriptions for after and before |
| 285 | BUFFER *after_desc = buffer_create(256, NULL); |
| 286 | BUFFER *before_desc = buffer_create(256, NULL); |
| 287 | |
| 288 | if (time_description_prefix && *time_description_prefix) { |
| 289 | buffer_sprintf(after_desc, "Start time for %s.", time_description_prefix); |
| 290 | buffer_sprintf(before_desc, "End time for %s.", time_description_prefix); |
| 291 | } else { |
| 292 | buffer_strcat(after_desc, "Start time for the query."); |
| 293 | buffer_strcat(before_desc, "End time for the query."); |
| 294 | } |
| 295 | |
| 296 | // Use the new function for both parameters |
| 297 | mcp_schema_add_time_param(buffer, "after", "Start time", buffer_tostring(after_desc), |
| 298 | "'before'", required ? 0 : MCP_DEFAULT_AFTER_TIME, required); |
| 299 | |
| 300 | mcp_schema_add_time_param(buffer, "before", "End time", buffer_tostring(before_desc), |
| 301 | "now", required ? 0 : MCP_DEFAULT_BEFORE_TIME, required); |
| 302 | |
| 303 | buffer_free(after_desc); |
| 304 | buffer_free(before_desc); |
| 305 | } |
| 306 | |
| 307 | // Add cardinality limit parameter to schema |
| 308 | void mcp_schema_add_cardinality_limit( |
| 309 | BUFFER *buffer, |
| 310 | const char *description, |
| 311 | size_t default_value, |
| 312 | size_t min_value, |
| 313 | size_t max_value |
| 314 | ) { |
| 315 | buffer_json_member_add_object(buffer, "cardinality_limit"); |
| 316 | { |
| 317 | buffer_json_member_add_string(buffer, "type", "number"); |
| 318 | buffer_json_member_add_string(buffer, "title", "Cardinality Limit"); |
| 319 | buffer_json_member_add_string( |
| 320 | buffer, "description", |
| 321 | description ? description : "When multiple nodes, instances, dimensions, labels are queried, " |
| 322 | "limit their numbers to prevent response size explosion."); |
| 323 | |
| 324 | if (default_value > 0) |
| 325 | buffer_json_member_add_uint64(buffer, "default", default_value); |
| 326 | |
| 327 | buffer_json_member_add_uint64(buffer, "minimum", min_value > 0 ? min_value : 1); |
| 328 | |
| 329 | if (max_value > 0) |
| 330 | buffer_json_member_add_uint64(buffer, "maximum", max_value); |
| 331 | } |
| 332 | buffer_json_object_close(buffer); |
| 333 | } |
| 334 | |
| 335 | // Extract string parameter with optional default |
| 336 | const char *mcp_params_extract_string( |
| 337 | struct json_object *params, |
| 338 | const char *param_name, |
| 339 | const char *default_value |
| 340 | ) { |
| 341 | struct json_object *obj = NULL; |
| 342 | |
| 343 | if (json_object_object_get_ex(params, param_name, &obj) && obj) { |
| 344 | if (json_object_is_type(obj, json_type_string)) { |
| 345 | const char *value = json_object_get_string(obj); |
| 346 | if (value && *value) { |
| 347 | return value; |
| 348 | } |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | return default_value; |
| 353 | } |
| 354 | |
| 355 | // Extract numeric size parameter with bounds checking |
| 356 | size_t mcp_params_extract_size( |
| 357 | struct json_object *params, |
| 358 | const char *param_name, |
| 359 | size_t default_value, |
| 360 | size_t min_value, |
| 361 | size_t max_value, |
| 362 | BUFFER *error |
| 363 | ) { |
| 364 | struct json_object *obj = NULL; |
| 365 | |
| 366 | if (json_object_object_get_ex(params, param_name, &obj) && obj) { |
| 367 | if (json_object_is_type(obj, json_type_int)) { |
| 368 | int64_t value = json_object_get_int64(obj); |
| 369 | if (value < 0) { |
| 370 | if (error) { |
| 371 | buffer_flush(error); |
| 372 | buffer_sprintf(error, "%s must be a positive number", param_name); |
| 373 | } |
| 374 | return default_value; |
| 375 | } |
| 376 | size_t size_value = (size_t)value; |
| 377 | if (size_value < min_value || (max_value > 0 && size_value > max_value)) { |
| 378 | if (error) { |
| 379 | buffer_flush(error); |
| 380 | if (max_value > 0) { |
| 381 | buffer_sprintf(error, |
| 382 | "%s must be between %zu and %zu", |
| 383 | param_name, min_value, max_value); |
| 384 | } else { |
| 385 | buffer_sprintf(error, |
| 386 | "%s must be at least %zu", |
| 387 | param_name, min_value); |
| 388 | } |
| 389 | } |
| 390 | return default_value; |
| 391 | } |
| 392 | return size_value; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | return default_value; |
| 397 | } |
| 398 | |
| 399 | // Extract timeout parameter (in seconds) |
| 400 | int mcp_params_extract_timeout( |
| 401 | struct json_object *params, |
| 402 | const char *param_name, |
| 403 | int default_seconds, |
| 404 | int min_seconds, |
| 405 | int max_seconds, |
| 406 | BUFFER *error |
| 407 | ) { |
| 408 | struct json_object *obj = NULL; |
| 409 | |
| 410 | if (json_object_object_get_ex(params, param_name, &obj) && obj) { |
| 411 | if (json_object_is_type(obj, json_type_int)) { |
| 412 | int value = json_object_get_int(obj); |
| 413 | if (value < min_seconds || (max_seconds > 0 && value > max_seconds)) { |
| 414 | if (error) { |
| 415 | buffer_flush(error); |
| 416 | if (max_seconds > 0) { |
| 417 | buffer_sprintf(error, |
| 418 | "%s must be between %d and %d seconds", |
| 419 | param_name, min_seconds, max_seconds); |
| 420 | } else { |
| 421 | buffer_sprintf(error, |
| 422 | "%s must be at least %d seconds", |
| 423 | param_name, min_seconds); |
| 424 | } |
| 425 | } |
| 426 | return default_seconds; |
| 427 | } |
| 428 | return value; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | return default_seconds; |
| 433 | } |
| 434 | |
| 435 | // Schema generation for timeout parameter |
| 436 | void mcp_schema_add_timeout( |
| 437 | BUFFER *buffer, |
| 438 | const char *param_name, |
| 439 | const char *title, |
| 440 | const char *description, |
| 441 | int default_seconds, |
| 442 | int min_seconds, |
| 443 | int max_seconds, |
| 444 | bool required |
| 445 | ) { |
| 446 | buffer_json_member_add_object(buffer, param_name); |
| 447 | { |
| 448 | buffer_json_member_add_string(buffer, "type", "number"); |
| 449 | buffer_json_member_add_string(buffer, "title", title); |
| 450 | buffer_json_member_add_string(buffer, "description", description); |
| 451 | |
| 452 | if (!required && default_seconds >= 0) |
| 453 | buffer_json_member_add_int64(buffer, "default", default_seconds); |
| 454 | |
| 455 | if (min_seconds >= 0) |
| 456 | buffer_json_member_add_int64(buffer, "minimum", min_seconds); |
| 457 | |
| 458 | if (max_seconds > 0) |
| 459 | buffer_json_member_add_int64(buffer, "maximum", max_seconds); |
| 460 | } |
| 461 | buffer_json_object_close(buffer); |
| 462 | } |
| 463 | |
| 464 | // Schema generation for generic string parameter |
| 465 | void mcp_schema_add_string_param( |
| 466 | BUFFER *buffer, |
| 467 | const char *param_name, |
| 468 | const char *title, |
| 469 | const char *description, |
| 470 | const char *default_value, |
| 471 | bool required |
| 472 | ) { |
| 473 | buffer_json_member_add_object(buffer, param_name); |
| 474 | { |
| 475 | buffer_json_member_add_string(buffer, "type", "string"); |
| 476 | buffer_json_member_add_string(buffer, "title", title); |
| 477 | buffer_json_member_add_string(buffer, "description", description); |
| 478 | |
| 479 | if (!required && default_value) |
| 480 | buffer_json_member_add_string(buffer, "default", default_value); |
| 481 | } |
| 482 | buffer_json_object_close(buffer); |
| 483 | } |
| 484 | |
| 485 | // Schema generation for size parameter |
| 486 | void mcp_schema_add_size_param( |
| 487 | BUFFER *buffer, |
| 488 | const char *param_name, |
| 489 | const char *title, |
| 490 | const char *description, |
| 491 | size_t default_value, |
| 492 | size_t min_value, |
| 493 | size_t max_value, |
| 494 | bool required |
| 495 | ) { |
| 496 | buffer_json_member_add_object(buffer, param_name); |
| 497 | { |
| 498 | buffer_json_member_add_string(buffer, "type", "number"); |
| 499 | buffer_json_member_add_string(buffer, "title", title); |
| 500 | buffer_json_member_add_string(buffer, "description", description); |
| 501 | |
| 502 | if (!required) |
| 503 | buffer_json_member_add_uint64(buffer, "default", default_value); |
| 504 | |
| 505 | if (min_value > 0) |
| 506 | buffer_json_member_add_uint64(buffer, "minimum", min_value); |
| 507 | |
| 508 | if (max_value < SIZE_MAX) |
| 509 | buffer_json_member_add_uint64(buffer, "maximum", max_value); |
| 510 | } |
| 511 | buffer_json_object_close(buffer); |
| 512 | } |
| 513 | |
| 514 | // Validate and auto-correct time window parameters |
| 515 | // Contract: 'after' is relative to 'before', 'before' is relative to 'now' |
| 516 | // Since we're a monitoring solution, we almost always work in the past |
| 517 | void mcp_params_validate_time_window(time_t *after, time_t *before, time_t now) { |
| 518 | if (!now) now = now_realtime_sec(); |
| 519 | |
| 520 | // Check if both are relative times (within 3 years of zero) |
| 521 | bool after_is_relative = (ABS(*after) <= API_RELATIVE_TIME_MAX); |
| 522 | bool before_is_relative = (ABS(*before) <= API_RELATIVE_TIME_MAX); |
| 523 | |
| 524 | if (after_is_relative && before_is_relative) { |
| 525 | // Case 1: Both are relative and positive - assistant didn't read instructions |
| 526 | if (*after > 0 && *before > 0) { |
| 527 | *after = -*after; |
| 528 | *before = -*before; |
| 529 | } |
| 530 | // Case 2: After is positive, before is negative, check if result makes sense |
| 531 | else if (*after > 0 && *before <= 0) { |
| 532 | // If after + before > 0, the assistant is confused about relative time |
| 533 | if (*after + *before > 0) { |
| 534 | *after = -*after; |
| 535 | } |
| 536 | } |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | // Parse and validate time window parameters (after and before) together |
| 541 | // This ensures consistent parsing and validation across all MCP tools |
| 542 | bool mcp_params_parse_time_window( |
| 543 | struct json_object *params, |
| 544 | time_t *after, |
| 545 | time_t *before, |
| 546 | time_t default_after, |
| 547 | time_t default_before, |
| 548 | bool allow_both_zero, |
| 549 | BUFFER *error |
| 550 | ) { |
| 551 | if (!after || !before) { |
| 552 | if (error) { |
| 553 | buffer_flush(error); |
| 554 | buffer_strcat(error, "Internal error: after and before pointers cannot be NULL"); |
| 555 | } |
| 556 | return false; |
| 557 | } |
| 558 | |
| 559 | // Parse both time parameters |
| 560 | *after = mcp_params_parse_time(params, "after", default_after); |
| 561 | *before = mcp_params_parse_time(params, "before", default_before); |
| 562 | |
| 563 | // Apply validation and auto-correction |
| 564 | mcp_params_validate_time_window(after, before, 0); |
| 565 | |
| 566 | // Basic validation - both cannot be zero (unless explicitly allowed) |
| 567 | if (*after == 0 && *before == 0 && !allow_both_zero) { |
| 568 | if (error) { |
| 569 | buffer_flush(error); |
| 570 | buffer_strcat(error, "Invalid time range: both 'after' and 'before' cannot be zero. " |
| 571 | "Use negative values for relative times (e.g., after=-3600, before=0 for the last hour) " |
| 572 | "or specific timestamps for absolute times."); |
| 573 | } |
| 574 | return false; |
| 575 | } |
| 576 | |
| 577 | // Check if after is later than before (when both are absolute timestamps) |
| 578 | bool after_is_absolute = (ABS(*after) > API_RELATIVE_TIME_MAX); |
| 579 | bool before_is_absolute = (ABS(*before) > API_RELATIVE_TIME_MAX); |
| 580 | |
| 581 | if (after_is_absolute && before_is_absolute && *after >= *before) { |
| 582 | if (error) { |
| 583 | buffer_flush(error); |
| 584 | buffer_sprintf(error, "Invalid time range: 'after' (%ld) must be earlier than 'before' (%ld) " |
| 585 | "when both are absolute timestamps.", *after, *before); |
| 586 | } |
| 587 | return false; |
| 588 | } |
| 589 | |
| 590 | return true; |
| 591 | } |
| 592 | |
| 593 | time_t mcp_params_parse_time(struct json_object *params, const char *name, time_t default_value) { |
| 594 | if (!params) |
| 595 | return default_value; |
| 596 | |
| 597 | struct json_object *obj = NULL; |
| 598 | if (!json_object_object_get_ex(params, name, &obj) || !obj) |
| 599 | return default_value; |
| 600 | |
| 601 | // First try as integer |
| 602 | if (json_object_is_type(obj, json_type_int)) |
| 603 | return json_object_get_int64(obj); |
| 604 | |
| 605 | // Then try as string |
| 606 | if (json_object_is_type(obj, json_type_string)) { |
| 607 | const char *val_str = json_object_get_string(obj); |
| 608 | if (!val_str || !*val_str) |
| 609 | return default_value; |
| 610 | |
| 611 | // Try to parse as RFC3339 first |
| 612 | char *endptr = NULL; |
| 613 | usec_t timestamp_ut = rfc3339_parse_ut(val_str, &endptr); |
| 614 | |
| 615 | // Check if RFC3339 parsing was successful |
| 616 | // Note: We check endptr to see if the entire string was consumed |
| 617 | // We don't check timestamp_ut > 0 because dates before 1970 are valid |
| 618 | if (endptr && (*endptr == '\0' || isspace((unsigned char)*endptr))) { |
| 619 | // Successfully parsed as RFC3339, convert to seconds |
| 620 | return (time_t)(timestamp_ut / USEC_PER_SEC); |
| 621 | } |
| 622 | |
| 623 | // Check for special "now" keyword first |
| 624 | if (strcasecmp(val_str, "now") == 0) { |
| 625 | return 0; // "now" means no offset from current time |
| 626 | } |
| 627 | |
| 628 | // Try duration parsing for human-readable durations |
| 629 | // This handles human-readable durations like: |
| 630 | // - "7d", "7 days", "2h", "30m" |
| 631 | // - "7 days ago", "2h ago" (negative) |
| 632 | // - Complex expressions: "1d12h", "2h30m ago" |
| 633 | int64_t duration_seconds; |
| 634 | if (duration_parse(val_str, &duration_seconds, "s", "s")) { |
| 635 | return (time_t)duration_seconds; |
| 636 | } |
| 637 | |
| 638 | // Duration parsing failed, fall back to parsing as integer |
| 639 | // This handles: |
| 640 | // - Unix timestamps as strings: "1705318200" |
| 641 | // - Relative times as strings: "-3600", "-86400" |
| 642 | return str2l(val_str); |
| 643 | } |
| 644 | |
| 645 | return default_value; |
| 646 | } |
| 647 | |
| 648 | // Schema generation for individual time parameter |
| 649 | void mcp_schema_add_time_param( |
| 650 | BUFFER *buffer, |
| 651 | const char *param_name, |
| 652 | const char *title, |
| 653 | const char *description, |
| 654 | const char *relative_to, |
| 655 | time_t default_value, |
| 656 | bool required |
| 657 | ) { |
| 658 | buffer_json_member_add_object(buffer, param_name); |
| 659 | { |
| 660 | buffer_json_member_add_string(buffer, "title", title); |
| 661 | |
| 662 | if (description && *description) |
| 663 | buffer_json_member_add_string(buffer, "description", description); |
| 664 | else |
| 665 | buffer_json_member_add_string( |
| 666 | buffer, "description", |
| 667 | "Unix epoch timestamp in seconds (e.g. 1705318200), " |
| 668 | "number of seconds (use NEGATIVE for past times), " |
| 669 | "human-readable duration (e.g. '-7d', '-2h', '-30m', '7 days ago'), " |
| 670 | "or RFC3339 datetime string"); |
| 671 | |
| 672 | // Use anyOf for multiple types |
| 673 | buffer_json_member_add_array(buffer, "anyOf"); |
| 674 | { |
| 675 | buffer_json_add_array_item_object(buffer); |
| 676 | { |
| 677 | buffer_json_member_add_string(buffer, "type", "number"); |
| 678 | buffer_json_member_add_sprintf(buffer, "description", |
| 679 | "Unix epoch timestamp in seconds (e.g. 1705318200), or number of seconds relative to %s (e.g. -3600 for an hour before %s). NOTE: Use NEGATIVE values for past times.", |
| 680 | relative_to ? relative_to : "now", relative_to ? relative_to : "now"); |
| 681 | } |
| 682 | buffer_json_object_close(buffer); |
| 683 | |
| 684 | buffer_json_add_array_item_object(buffer); |
| 685 | { |
| 686 | buffer_json_member_add_string(buffer, "type", "string"); |
| 687 | buffer_json_member_add_string(buffer, "description", |
| 688 | "RFC3339 datetime string (e.g., \"2024-01-15T10:30:00Z\", \"2024-01-15T10:30:00-05:00\"), " |
| 689 | "or human-readable duration (e.g., \"-7d\", \"-2h\", \"-30m\", \"7 days ago\", \"now\"). NOTE: Use NEGATIVE values for past times."); |
| 690 | } |
| 691 | buffer_json_object_close(buffer); |
| 692 | } |
| 693 | buffer_json_array_close(buffer); |
| 694 | |
| 695 | if (!required && default_value != 0) { |
| 696 | buffer_json_member_add_int64(buffer, "default", default_value); |
| 697 | } |
| 698 | } |
| 699 | buffer_json_object_close(buffer); |
| 700 | } |