git.ozlabs.org Git - ccan/blob - tools/ccanlint/ccanlint.c

   1 /*
   2  * ccanlint: assorted checks and advice for a ccan package
   3  * Copyright (C) 2008 Rusty Russell, Idris Soule
   4  * Copyright (C) 2010 Rusty Russell, Idris Soule
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc., 51
  18  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20 #include "ccanlint.h"
  21 #include "../tools.h"
  22 #include "../read_config_header.h"
  23 #include <unistd.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <err.h>
  28 #include <ctype.h>
  29 #include <ccan/str/str.h>
  30 #include <ccan/take/take.h>
  31 #include <ccan/opt/opt.h>
  32 #include <ccan/foreach/foreach.h>
  33 #include <ccan/cast/cast.h>
  34 #include <ccan/tlist/tlist.h>
  35 #include <ccan/tal/path/path.h>
  36 #include <ccan/strmap/strmap.h>
  37
  38 struct ccanlint_map {
  39         STRMAP_MEMBERS(struct ccanlint *);
  40 };
  41
  42 int verbose = 0;
  43 static struct ccanlint_map tests;
  44 bool safe_mode = false;
  45 bool keep_results = false;
  46 bool non_ccan_deps = false;
  47 bool build_failed = false;
  48 static bool targeting = false;
  49 static unsigned int timeout;
  50
  51 const char *config_header;
  52
  53 const char *ccan_dir;
  54
  55 #if 0
  56 static void indent_print(const char *string)
  57 {
  58         while (*string) {
  59                 unsigned int line = strcspn(string, "\n");
  60                 printf("\t%.*s", line, string);
  61                 if (string[line] == '\n') {
  62                         printf("\n");
  63                         line++;
  64                 }
  65                 string += line;
  66         }
  67 }
  68 #endif
  69
  70 bool ask(const char *question)
  71 {
  72         char reply[80];
  73
  74         printf("%s ", question);
  75         fflush(stdout);
  76
  77         return fgets(reply, sizeof(reply), stdin) != NULL
  78                 && toupper(reply[0]) == 'Y';
  79 }
  80
  81 /* Skip, but don't remove. */
  82 static bool skip_test(struct dgraph_node *node, const char *why)
  83 {
  84         struct ccanlint *c = container_of(node, struct ccanlint, node);
  85         c->skip = why;
  86         return true;
  87 }
  88
  89 static const char *dep_failed(struct manifest *m)
  90 {
  91         return "dependency couldn't run";
  92 }
  93
  94 static bool cannot_run(struct dgraph_node *node, void *all)
  95 {
  96         struct ccanlint *c = container_of(node, struct ccanlint, node);
  97         c->can_run = dep_failed;
  98
  99         return true;
 100 }
 101
 102 struct run_info {
 103         bool quiet;
 104         unsigned int score, total;
 105         struct manifest *m;
 106         const char *prefix;
 107         bool pass;
 108 };
 109
 110 static bool run_test(struct dgraph_node *n, struct run_info *run)
 111 {
 112         struct ccanlint *i = container_of(n, struct ccanlint, node);
 113         unsigned int timeleft;
 114         struct score *score;
 115
 116         if (i->done)
 117                 return true;
 118
 119         score = tal(run->m, struct score);
 120         list_head_init(&score->per_file_errors);
 121         score->error = NULL;
 122         score->pass = false;
 123         score->score = 0;
 124         score->total = 1;
 125
 126         /* We can see skipped things in two cases:
 127          * (1) _info excluded them (presumably because they fail).
 128          * (2) A prerequisite failed.
 129          */
 130         if (i->skip) {
 131                 if (verbose)
 132                         printf("%s%s: skipped (%s)\n",
 133                                run->prefix, i->name, i->skip);
 134                 /* Pass us up to the test which failed, not us. */
 135                 score->pass = true;
 136                 goto out;
 137         }
 138
 139         if (i->can_run) {
 140                 i->skip = i->can_run(run->m);
 141                 if (i->skip) {
 142                         /* Test doesn't apply, or can't run?  That's OK. */
 143                         if (verbose > 1)
 144                                 printf("%s%s: skipped (%s)\n",
 145                                        run->prefix, i->name, i->skip);
 146                         /* Mark our dependencies to skip. */
 147                         dgraph_traverse_from(&i->node, cannot_run, NULL);
 148                         score->pass = true;
 149                         score->total = 0;
 150                         goto out;
 151                 }
 152         }
 153
 154         timeleft = timeout ? timeout : default_timeout_ms;
 155         i->check(run->m, &timeleft, score);
 156         if (timeout && timeleft == 0) {
 157                 i->skip = "timeout";
 158                 if (verbose)
 159                         printf("%s%s: skipped (%s)\n",
 160                                run->prefix, i->name, i->skip);
 161                 /* Mark our dependencies to skip. */
 162                 dgraph_traverse_from(&i->node, skip_test,
 163                                      "dependency timed out");
 164                 score->pass = true;
 165                 score->total = 0;
 166                 goto out;
 167         }
 168
 169         assert(score->score <= score->total);
 170         if ((!score->pass && !run->quiet)
 171             || (score->score < score->total && verbose)
 172             || verbose > 1) {
 173                 printf("%s%s (%s): %s",
 174                        run->prefix, i->name, i->key,
 175                        score->pass ? "PASS" : "FAIL");
 176                 if (score->total > 1)
 177                         printf(" (+%u/%u)", score->score, score->total);
 178                 printf("\n");
 179         }
 180
 181         if ((!run->quiet && !score->pass) || verbose) {
 182                 if (score->error) {
 183                         printf("%s%s", score->error,
 184                                strends(score->error, "\n") ? "" : "\n");
 185                 }
 186         }
 187         if (!run->quiet && score->score < score->total && i->handle)
 188                 i->handle(run->m, score);
 189
 190         if (!score->pass) {
 191                 /* Skip any tests which depend on this one. */
 192                 dgraph_traverse_from(&i->node, skip_test, "dependency failed");
 193         }
 194
 195 out:
 196         run->score += score->score;
 197         run->total += score->total;
 198
 199         /* FIXME: Free score. */
 200         run->pass &= score->pass;
 201         i->done = true;
 202
 203         if (!score->pass && i->compulsory) {
 204                 warnx("%s%s failed", run->prefix, i->name);
 205                 run->score = 0;
 206                 return false;
 207         }
 208         return true;
 209 }
 210
 211 static void register_test(struct ccanlint *test)
 212 {
 213         if (!strmap_add(&tests, test->key, test))
 214                 err(1, "Adding test %s", test->key);
 215         test->options = tal_arr(NULL, char *, 1);
 216         test->options[0] = NULL;
 217         dgraph_init_node(&test->node);
 218 }
 219
 220 static bool get_test(const char *member, struct ccanlint *i,
 221                      struct ccanlint **ret)
 222 {
 223         if (tlist_empty(&i->node.edge[DGRAPH_TO])) {
 224                 *ret = i;
 225                 return false;
 226         }
 227         return true;
 228 }
 229
 230 /**
 231  * get_next_test - retrieves the next test to be processed
 232  **/
 233 static inline struct ccanlint *get_next_test(void)
 234 {
 235         struct ccanlint *i = NULL;
 236
 237         strmap_iterate(&tests, get_test, &i);
 238         if (i)
 239                 return i;
 240
 241         if (strmap_empty(&tests))
 242                 return NULL;
 243
 244         errx(1, "Can't make process; test dependency cycle");
 245 }
 246
 247 static struct ccanlint *find_test(const char *key)
 248 {
 249         return strmap_get(&tests, key);
 250 }
 251
 252 bool is_excluded(const char *name)
 253 {
 254         return find_test(name)->skip != NULL;
 255 }
 256
 257 static bool init_deps(const char *member, struct ccanlint *c, void *unused)
 258 {
 259         char **deps = tal_strsplit(NULL, c->needs, " ", STR_EMPTY_OK);
 260         unsigned int i;
 261
 262         for (i = 0; deps[i]; i++) {
 263                 struct ccanlint *dep;
 264
 265                 dep = find_test(deps[i]);
 266                 if (!dep)
 267                         errx(1, "BUG: unknown dep '%s' for %s",
 268                              deps[i], c->key);
 269                 dgraph_add_edge(&dep->node, &c->node);
 270         }
 271         tal_free(deps);
 272         return true;
 273 }
 274
 275 static bool check_names(const char *member, struct ccanlint *c,
 276                         struct ccanlint_map *names)
 277 {
 278         if (!strmap_add(names, c->name, c))
 279                 err(1, "Duplicate name %s", c->name);
 280         return true;
 281 }
 282
 283 static void init_tests(void)
 284 {
 285         struct ccanlint_map names;
 286         struct ccanlint **table;
 287         size_t i, num;
 288
 289         strmap_init(&tests);
 290
 291         table = autodata_get(ccanlint_tests, &num);
 292         for (i = 0; i < num; i++)
 293                 register_test(table[i]);
 294         autodata_free(table);
 295
 296         strmap_iterate(&tests, init_deps, NULL);
 297
 298         /* Check for duplicate names. */
 299         strmap_init(&names);
 300         strmap_iterate(&tests, check_names, &names);
 301         strmap_clear(&names);
 302 }
 303
 304 static bool reset_test(struct dgraph_node *node, void *unused)
 305 {
 306         struct ccanlint *c = container_of(node, struct ccanlint, node);
 307         c->skip = NULL;
 308         c->done = false;
 309         return true;
 310 }
 311
 312 static void reset_tests(struct dgraph_node *all)
 313 {
 314         dgraph_traverse_to(all, reset_test, NULL);
 315 }
 316
 317 static bool print_deps(const char *member, struct ccanlint *c, void *unused)
 318 {
 319         if (!tlist_empty(&c->node.edge[DGRAPH_FROM])) {
 320                 struct dgraph_edge *e;
 321
 322                 printf("These depend on %s:\n", c->key);
 323                 dgraph_for_each_edge(&c->node, e, DGRAPH_FROM) {
 324                         struct ccanlint *to = container_of(e->n[DGRAPH_TO],
 325                                                            struct ccanlint,
 326                                                            node);
 327                         printf("\t%s\n", to->key);
 328                 }
 329         }
 330         return true;
 331 }
 332
 333 static void print_test_depends(void)
 334 {
 335         printf("Tests:\n");
 336
 337         strmap_iterate(&tests, print_deps, NULL);
 338 }
 339
 340
 341 static void show_tmpdir(const char *dir)
 342 {
 343         printf("You can find ccanlint working files in '%s'\n", dir);
 344 }
 345
 346 static char *keep_tests(void *unused)
 347 {
 348         keep_results = true;
 349
 350         /* Don't automatically destroy temporary dir. */
 351         keep_temp_dir();
 352         tal_add_destructor(temp_dir(), show_tmpdir);
 353         return NULL;
 354 }
 355
 356 static bool remove_test(struct dgraph_node *node, const char *why)
 357 {
 358         struct ccanlint *c = container_of(node, struct ccanlint, node);
 359         c->skip = why;
 360         dgraph_clear_node(node);
 361         return true;
 362 }
 363
 364 static char *exclude_test(const char *testname, void *unused)
 365 {
 366         struct ccanlint *i = find_test(testname);
 367         if (!i)
 368                 return tal_fmt(NULL, "No test %s to --exclude", testname);
 369
 370         /* Remove this, and everything which depends on it. */
 371         dgraph_traverse_from(&i->node, remove_test, "excluded on command line");
 372         remove_test(&i->node, "excluded on command line");
 373         return NULL;
 374 }
 375
 376 static void skip_test_and_deps(struct ccanlint *c, const char *why)
 377 {
 378         /* Skip this, and everything which depends on us. */
 379         dgraph_traverse_from(&c->node, skip_test, why);
 380         skip_test(&c->node, why);
 381 }
 382
 383 static char *list_tests(void *arg)
 384 {
 385         struct ccanlint *i;
 386
 387         printf("Tests:\n");
 388         /* This makes them print in topological order. */
 389         while ((i = get_next_test()) != NULL) {
 390                 printf("   %-25s %s\n", i->key, i->name);
 391                 dgraph_clear_node(&i->node);
 392                 strmap_del(&tests, i->key, NULL);
 393         }
 394         exit(0);
 395 }
 396
 397 static bool draw_test(const char *member, struct ccanlint *c, const char *style)
 398 {
 399         /*
 400          * todo: escape labels in case ccanlint test keys have
 401          *       characters interpreted as GraphViz syntax.
 402          */
 403         printf("\t\"%p\" [label=\"%s\"%s]\n", c, c->key, style);
 404         return true;
 405 }
 406
 407 static void test_dgraph_vertices(const char *style)
 408 {
 409         strmap_iterate(&tests, draw_test, style);
 410 }
 411
 412 static bool draw_edges(const char *member, struct ccanlint *c, void *unused)
 413 {
 414         struct dgraph_edge *e;
 415
 416         dgraph_for_each_edge(&c->node, e, DGRAPH_FROM) {
 417                 struct ccanlint *to = container_of(e->n[DGRAPH_TO],
 418                                                    struct ccanlint,
 419                                                    node);
 420                 printf("\t\"%p\" -> \"%p\"\n", c->name, to->name);
 421         }
 422         return true;
 423 }
 424
 425 static void test_dgraph_edges(void)
 426 {
 427         strmap_iterate(&tests, draw_edges, NULL);
 428 }
 429
 430 static char *test_dependency_graph(void *arg)
 431 {
 432         puts("digraph G {");
 433
 434         test_dgraph_vertices("");
 435         test_dgraph_edges();
 436
 437         puts("}");
 438
 439         exit(0);
 440 }
 441
 442 static void add_options(struct ccanlint *test, char **options,
 443                         unsigned int num_options)
 444 {
 445         unsigned int num;
 446
 447         if (!test->options)
 448                 num = 0;
 449         else
 450                 /* -1, because last one is NULL. */
 451                 num = tal_count(test->options) - 1;
 452
 453         tal_resize(&test->options, num + num_options + 1);
 454         memcpy(&test->options[num], options, (num_options + 1)*sizeof(char *));
 455 }
 456
 457 void add_info_options(struct ccan_file *info)
 458 {
 459         struct doc_section *d;
 460         unsigned int i;
 461         struct ccanlint *test;
 462
 463         list_for_each(get_ccan_file_docs(info), d, list) {
 464                 if (!streq(d->type, "ccanlint"))
 465                         continue;
 466
 467                 for (i = 0; i < d->num_lines; i++) {
 468                         char **words = tal_strsplit(d, d->lines[i], " \t",
 469                                                     STR_NO_EMPTY);
 470                         if (!words[0])
 471                                 continue;
 472
 473                         if (strncmp(words[0], "//", 2) == 0)
 474                                 continue;
 475
 476                         test = find_test(words[0]);
 477                         if (!test) {
 478                                 warnx("%s: unknown ccanlint test '%s'",
 479                                       info->fullname, words[0]);
 480                                 continue;
 481                         }
 482
 483                         if (!words[1]) {
 484                                 warnx("%s: no argument to test '%s'",
 485                                       info->fullname, words[0]);
 486                                 continue;
 487                         }
 488
 489                         /* Known failure? */
 490                         if (strcasecmp(words[1], "FAIL") == 0) {
 491                                 if (!targeting)
 492                                         skip_test_and_deps(test,
 493                                                            "excluded in _info"
 494                                                            " file");
 495                         } else {
 496                                 if (!test->takes_options)
 497                                         warnx("%s: %s doesn't take options",
 498                                               info->fullname, words[0]);
 499                                 add_options(test, words+1, tal_count(words)-1);
 500                         }
 501                 }
 502         }
 503 }
 504
 505 /* If options are of form "filename:<option>" they only apply to that file */
 506 char **per_file_options(const struct ccanlint *test, struct ccan_file *f)
 507 {
 508         char **ret;
 509         unsigned int i, j = 0;
 510
 511         /* Fast path. */
 512         if (!test->options[0])
 513                 return test->options;
 514
 515         ret = tal_arr(f, char *, tal_count(test->options));
 516         for (i = 0; test->options[i]; i++) {
 517                 char *optname;
 518
 519                 if (!test->options[i] || !strchr(test->options[i], ':')) {
 520                         optname = test->options[i];
 521                 } else if (strstarts(test->options[i], f->name)
 522                            && test->options[i][strlen(f->name)] == ':') {
 523                         optname = test->options[i] + strlen(f->name) + 1;
 524                 } else
 525                         continue;
 526
 527                 /* FAIL overrides anything else. */
 528                 if (streq(optname, "FAIL")) {
 529                         ret = tal_arr(f, char *, 2);
 530                         ret[0] = (char *)"FAIL";
 531                         ret[1] = NULL;
 532                         return ret;
 533                 }
 534                 ret[j++] = optname;
 535         }
 536         ret[j] = NULL;
 537
 538         /* Shrink it to size so tal_array_length() works as expected. */
 539         tal_resize(&ret, j + 1);
 540         return ret;
 541 }
 542
 543 static char *opt_set_const_charp(const char *arg, const char **p)
 544 {
 545         return opt_set_charp(arg, cast_const2(char **, p));
 546 }
 547
 548 static char *opt_set_target(const char *arg, struct dgraph_node *all)
 549 {
 550         struct ccanlint *t = find_test(arg);
 551         if (!t)
 552                 return tal_fmt(NULL, "unknown --target %s", arg);
 553
 554         targeting = true;
 555         dgraph_add_edge(&t->node, all);
 556         return NULL;
 557 }
 558
 559 static bool run_tests(struct dgraph_node *all,
 560                       bool summary,
 561                       bool deps_fail_ignore,
 562                       struct manifest *m,
 563                       const char *prefix)
 564 {
 565         struct run_info run;
 566         const char *comment = "";
 567
 568         run.quiet = summary;
 569         run.m = m;
 570         run.prefix = prefix;
 571         run.score = run.total = 0;
 572         run.pass = true;
 573
 574         non_ccan_deps = build_failed = false;
 575
 576         dgraph_traverse_to(all, run_test, &run);
 577
 578         /* We can completely fail if we're missing external stuff: ignore */
 579         if (deps_fail_ignore && non_ccan_deps && build_failed) {
 580                 comment = " (missing non-ccan dependencies?)";
 581                 run.pass = true;
 582         }
 583         printf("%sTotal score: %u/%u%s\n",
 584                prefix, run.score, run.total, comment);
 585
 586         return run.pass;
 587 }
 588
 589 static bool add_to_all(const char *member, struct ccanlint *c,
 590                        struct dgraph_node *all)
 591 {
 592         /* If we're excluded on cmdline, don't add. */
 593         if (!c->skip)
 594                 dgraph_add_edge(&c->node, all);
 595         return true;
 596 }
 597
 598 static bool test_module(struct dgraph_node *all,
 599                         const char *dir, const char *prefix, bool summary,
 600                         bool deps_fail_ignore)
 601 {
 602         struct manifest *m = get_manifest(autofree(), dir);
 603         char *testlink = path_join(NULL, temp_dir(), "test");
 604
 605         /* Create a symlink from temp dir back to src dir's
 606          * test directory. */
 607         unlink(testlink);
 608         if (symlink(path_join(m, dir, "test"), testlink) != 0)
 609                 err(1, "Creating test symlink in %s", temp_dir());
 610
 611         return run_tests(all, summary, deps_fail_ignore, m, prefix);
 612 }
 613
 614 int main(int argc, char *argv[])
 615 {
 616         bool summary = false, pass = true, deps_fail_ignore = false;
 617         unsigned int i;
 618         const char *prefix = "";
 619         char *cwd = path_cwd(NULL), *dir;
 620         struct ccanlint top;  /* cannot_run may try to set ->can_run */
 621         const char *override_compiler = NULL, *override_cflags = NULL;
 622
 623         /* Empty graph node to which we attach everything else. */
 624         dgraph_init_node(&top.node);
 625
 626         opt_register_early_noarg("--verbose|-v", opt_inc_intval, &verbose,
 627                                  "verbose mode (up to -vvvv)");
 628         opt_register_noarg("-n|--safe-mode", opt_set_bool, &safe_mode,
 629                          "do not compile anything");
 630         opt_register_noarg("-l|--list-tests", list_tests, NULL,
 631                          "list tests ccanlint performs (and exit)");
 632         opt_register_noarg("--test-dep-graph", test_dependency_graph, NULL,
 633                          "print dependency graph of tests in Graphviz .dot format");
 634         opt_register_noarg("-k|--keep", keep_tests, NULL,
 635                          "do not delete ccanlint working files");
 636         opt_register_noarg("--summary|-s", opt_set_bool, &summary,
 637                            "simply give one line summary");
 638         opt_register_arg("-x|--exclude <testname>", exclude_test, NULL, NULL,
 639                          "exclude <testname> (can be used multiple times)");
 640         opt_register_arg("--timeout <milleseconds>", opt_set_uintval,
 641                          NULL, &timeout,
 642                          "ignore (terminate) tests that are slower than this");
 643         opt_register_arg("-t|--target <testname>", opt_set_target, NULL,
 644                          &top.node,
 645                          "only run one test (and its prerequisites)");
 646         opt_register_arg("--compiler <compiler>", opt_set_const_charp,
 647                          NULL, &override_compiler, "set the compiler");
 648         opt_register_arg("--cflags <flags>", opt_set_const_charp,
 649                          NULL, &override_cflags, "set the compiler flags");
 650         opt_register_noarg("--deps-fail-ignore", opt_set_bool,
 651                            &deps_fail_ignore,
 652                            "don't fail if external dependencies are missing");
 653         opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
 654                            "\nA program for checking and guiding development"
 655                            " of CCAN modules.",
 656                            "This usage message");
 657
 658         /* Do verbose before anything else... */
 659         opt_early_parse(argc, argv, opt_log_stderr_exit);
 660
 661         /* We move into temporary directory, so gcov dumps its files there. */
 662         if (chdir(temp_dir()) != 0)
 663                 err(1, "Error changing to %s temporary dir", temp_dir());
 664
 665         init_tests();
 666
 667         if (verbose >= 3) {
 668                 compile_verbose = true;
 669                 print_test_depends();
 670         }
 671         if (verbose >= 4)
 672                 tools_verbose = true;
 673
 674         opt_parse(&argc, argv, opt_log_stderr_exit);
 675
 676         if (!targeting)
 677                 strmap_iterate(&tests, add_to_all, &top.node);
 678
 679         if (argc == 1)
 680                 dir = cwd;
 681         else
 682                 dir = path_simplify(NULL, take(path_join(NULL, cwd, argv[1])));
 683
 684         ccan_dir = find_ccan_dir(dir);
 685         if (!ccan_dir)
 686                 errx(1, "Cannot find ccan/ base directory in %s", dir);
 687         config_header = read_config_header(ccan_dir, verbose > 1);
 688
 689         /* We do this after read_config_header has set compiler & cflags */
 690         if (override_cflags)
 691                 cflags = override_cflags;
 692         if (override_compiler)
 693                 compiler = override_compiler;
 694
 695         if (argc == 1)
 696                 pass = test_module(&top.node, cwd, "",
 697                                    summary, deps_fail_ignore);
 698         else {
 699                 for (i = 1; i < argc; i++) {
 700                         dir = path_canon(NULL,
 701                                          take(path_join(NULL, cwd, argv[i])));
 702                         if (!dir)
 703                                 err(1, "Cannot get canonical name of '%s'",
 704                                     argv[i]);
 705
 706                         prefix = path_join(NULL, ccan_dir, "ccan");
 707                         prefix = path_rel(NULL, take(prefix), dir);
 708                         prefix = tal_strcat(NULL, take(prefix), ": ");
 709
 710                         pass &= test_module(&top.node, dir, prefix, summary,
 711                                             deps_fail_ignore);
 712                         reset_tests(&top.node);
 713                 }
 714         }
 715         return pass ? 0 : 1;
 716 }