cgit.c

   1 /* cgit.c: cgi for the git scm
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "cache.h"
  11 #include "cmd.h"
  12 #include "configfile.h"
  13 #include "html.h"
  14 #include "ui-shared.h"
  15 #include "ui-stats.h"
  16 #include "ui-blob.h"
  17 #include "ui-summary.h"
  18 #include "scan-tree.h"
  19
  20 const char *cgit_version = CGIT_VERSION;
  21
  22 static void add_mimetype(const char *name, const char *value)
  23 {
  24         struct string_list_item *item;
  25
  26         item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
  27         item->util = xstrdup(value);
  28 }
  29
  30 static void process_cached_repolist(const char *path);
  31
  32 static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
  33 {
  34         struct string_list_item *item;
  35
  36         if (!strcmp(name, "name"))
  37                 repo->name = xstrdup(value);
  38         else if (!strcmp(name, "clone-url"))
  39                 repo->clone_url = xstrdup(value);
  40         else if (!strcmp(name, "desc"))
  41                 repo->desc = xstrdup(value);
  42         else if (!strcmp(name, "owner"))
  43                 repo->owner = xstrdup(value);
  44         else if (!strcmp(name, "defbranch"))
  45                 repo->defbranch = xstrdup(value);
  46         else if (!strcmp(name, "snapshots"))
  47                 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
  48         else if (!strcmp(name, "enable-commit-graph"))
  49                 repo->enable_commit_graph = atoi(value);
  50         else if (!strcmp(name, "enable-log-filecount"))
  51                 repo->enable_log_filecount = atoi(value);
  52         else if (!strcmp(name, "enable-log-linecount"))
  53                 repo->enable_log_linecount = atoi(value);
  54         else if (!strcmp(name, "enable-remote-branches"))
  55                 repo->enable_remote_branches = atoi(value);
  56         else if (!strcmp(name, "enable-subject-links"))
  57                 repo->enable_subject_links = atoi(value);
  58         else if (!strcmp(name, "enable-html-serving"))
  59                 repo->enable_html_serving = atoi(value);
  60         else if (!strcmp(name, "branch-sort")) {
  61                 if (!strcmp(value, "age"))
  62                         repo->branch_sort = 1;
  63                 if (!strcmp(value, "name"))
  64                         repo->branch_sort = 0;
  65         } else if (!strcmp(name, "commit-sort")) {
  66                 if (!strcmp(value, "date"))
  67                         repo->commit_sort = 1;
  68                 if (!strcmp(value, "topo"))
  69                         repo->commit_sort = 2;
  70         } else if (!strcmp(name, "max-stats"))
  71                 repo->max_stats = cgit_find_stats_period(value, NULL);
  72         else if (!strcmp(name, "module-link"))
  73                 repo->module_link= xstrdup(value);
  74         else if (starts_with(name, "module-link.")) {
  75                 item = string_list_append(&repo->submodules, xstrdup(name + 12));
  76                 item->util = xstrdup(value);
  77         } else if (!strcmp(name, "section"))
  78                 repo->section = xstrdup(value);
  79         else if (!strcmp(name, "readme") && value != NULL) {
  80                 if (repo->readme.items == ctx.cfg.readme.items)
  81                         memset(&repo->readme, 0, sizeof(repo->readme));
  82                 string_list_append(&repo->readme, xstrdup(value));
  83         } else if (!strcmp(name, "logo") && value != NULL)
  84                 repo->logo = xstrdup(value);
  85         else if (!strcmp(name, "logo-link") && value != NULL)
  86                 repo->logo_link = xstrdup(value);
  87         else if (!strcmp(name, "hide"))
  88                 repo->hide = atoi(value);
  89         else if (!strcmp(name, "ignore"))
  90                 repo->ignore = atoi(value);
  91         else if (ctx.cfg.enable_filter_overrides) {
  92                 if (!strcmp(name, "about-filter"))
  93                         repo->about_filter = cgit_new_filter(value, ABOUT);
  94                 else if (!strcmp(name, "commit-filter"))
  95                         repo->commit_filter = cgit_new_filter(value, COMMIT);
  96                 else if (!strcmp(name, "source-filter"))
  97                         repo->source_filter = cgit_new_filter(value, SOURCE);
  98                 else if (!strcmp(name, "email-filter"))
  99                         repo->email_filter = cgit_new_filter(value, EMAIL);
 100                 else if (!strcmp(name, "owner-filter"))
 101                         repo->owner_filter = cgit_new_filter(value, OWNER);
 102         }
 103 }
 104
 105 static void config_cb(const char *name, const char *value)
 106 {
 107         if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
 108                 ctx.cfg.section = xstrdup(value);
 109         else if (!strcmp(name, "repo.url"))
 110                 ctx.repo = cgit_add_repo(value);
 111         else if (ctx.repo && !strcmp(name, "repo.path"))
 112                 ctx.repo->path = trim_end(value, '/');
 113         else if (ctx.repo && starts_with(name, "repo."))
 114                 repo_config(ctx.repo, name + 5, value);
 115         else if (!strcmp(name, "readme"))
 116                 string_list_append(&ctx.cfg.readme, xstrdup(value));
 117         else if (!strcmp(name, "root-title"))
 118                 ctx.cfg.root_title = xstrdup(value);
 119         else if (!strcmp(name, "root-desc"))
 120                 ctx.cfg.root_desc = xstrdup(value);
 121         else if (!strcmp(name, "root-readme"))
 122                 ctx.cfg.root_readme = xstrdup(value);
 123         else if (!strcmp(name, "css"))
 124                 ctx.cfg.css = xstrdup(value);
 125         else if (!strcmp(name, "favicon"))
 126                 ctx.cfg.favicon = xstrdup(value);
 127         else if (!strcmp(name, "footer"))
 128                 ctx.cfg.footer = xstrdup(value);
 129         else if (!strcmp(name, "head-include"))
 130                 ctx.cfg.head_include = xstrdup(value);
 131         else if (!strcmp(name, "header"))
 132                 ctx.cfg.header = xstrdup(value);
 133         else if (!strcmp(name, "logo"))
 134                 ctx.cfg.logo = xstrdup(value);
 135         else if (!strcmp(name, "index-header"))
 136                 ctx.cfg.index_header = xstrdup(value);
 137         else if (!strcmp(name, "index-info"))
 138                 ctx.cfg.index_info = xstrdup(value);
 139         else if (!strcmp(name, "logo-link"))
 140                 ctx.cfg.logo_link = xstrdup(value);
 141         else if (!strcmp(name, "module-link"))
 142                 ctx.cfg.module_link = xstrdup(value);
 143         else if (!strcmp(name, "strict-export"))
 144                 ctx.cfg.strict_export = xstrdup(value);
 145         else if (!strcmp(name, "virtual-root")) {
 146                 ctx.cfg.virtual_root = ensure_end(value, '/');
 147         } else if (!strcmp(name, "nocache"))
 148                 ctx.cfg.nocache = atoi(value);
 149         else if (!strcmp(name, "noplainemail"))
 150                 ctx.cfg.noplainemail = atoi(value);
 151         else if (!strcmp(name, "noheader"))
 152                 ctx.cfg.noheader = atoi(value);
 153         else if (!strcmp(name, "snapshots"))
 154                 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 155         else if (!strcmp(name, "enable-filter-overrides"))
 156                 ctx.cfg.enable_filter_overrides = atoi(value);
 157         else if (!strcmp(name, "enable-follow-links"))
 158                 ctx.cfg.enable_follow_links = atoi(value);
 159         else if (!strcmp(name, "enable-http-clone"))
 160                 ctx.cfg.enable_http_clone = atoi(value);
 161         else if (!strcmp(name, "enable-index-links"))
 162                 ctx.cfg.enable_index_links = atoi(value);
 163         else if (!strcmp(name, "enable-index-owner"))
 164                 ctx.cfg.enable_index_owner = atoi(value);
 165         else if (!strcmp(name, "enable-commit-graph"))
 166                 ctx.cfg.enable_commit_graph = atoi(value);
 167         else if (!strcmp(name, "enable-log-filecount"))
 168                 ctx.cfg.enable_log_filecount = atoi(value);
 169         else if (!strcmp(name, "enable-log-linecount"))
 170                 ctx.cfg.enable_log_linecount = atoi(value);
 171         else if (!strcmp(name, "enable-remote-branches"))
 172                 ctx.cfg.enable_remote_branches = atoi(value);
 173         else if (!strcmp(name, "enable-subject-links"))
 174                 ctx.cfg.enable_subject_links = atoi(value);
 175         else if (!strcmp(name, "enable-html-serving"))
 176                 ctx.cfg.enable_html_serving = atoi(value);
 177         else if (!strcmp(name, "enable-tree-linenumbers"))
 178                 ctx.cfg.enable_tree_linenumbers = atoi(value);
 179         else if (!strcmp(name, "enable-git-config"))
 180                 ctx.cfg.enable_git_config = atoi(value);
 181         else if (!strcmp(name, "max-stats"))
 182                 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
 183         else if (!strcmp(name, "cache-size"))
 184                 ctx.cfg.cache_size = atoi(value);
 185         else if (!strcmp(name, "cache-root"))
 186                 ctx.cfg.cache_root = xstrdup(expand_macros(value));
 187         else if (!strcmp(name, "cache-root-ttl"))
 188                 ctx.cfg.cache_root_ttl = atoi(value);
 189         else if (!strcmp(name, "cache-repo-ttl"))
 190                 ctx.cfg.cache_repo_ttl = atoi(value);
 191         else if (!strcmp(name, "cache-scanrc-ttl"))
 192                 ctx.cfg.cache_scanrc_ttl = atoi(value);
 193         else if (!strcmp(name, "cache-static-ttl"))
 194                 ctx.cfg.cache_static_ttl = atoi(value);
 195         else if (!strcmp(name, "cache-dynamic-ttl"))
 196                 ctx.cfg.cache_dynamic_ttl = atoi(value);
 197         else if (!strcmp(name, "cache-about-ttl"))
 198                 ctx.cfg.cache_about_ttl = atoi(value);
 199         else if (!strcmp(name, "cache-snapshot-ttl"))
 200                 ctx.cfg.cache_snapshot_ttl = atoi(value);
 201         else if (!strcmp(name, "case-sensitive-sort"))
 202                 ctx.cfg.case_sensitive_sort = atoi(value);
 203         else if (!strcmp(name, "about-filter"))
 204                 ctx.cfg.about_filter = cgit_new_filter(value, ABOUT);
 205         else if (!strcmp(name, "commit-filter"))
 206                 ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
 207         else if (!strcmp(name, "email-filter"))
 208                 ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
 209         else if (!strcmp(name, "owner-filter"))
 210                 ctx.cfg.owner_filter = cgit_new_filter(value, OWNER);
 211         else if (!strcmp(name, "auth-filter"))
 212                 ctx.cfg.auth_filter = cgit_new_filter(value, AUTH);
 213         else if (!strcmp(name, "embedded"))
 214                 ctx.cfg.embedded = atoi(value);
 215         else if (!strcmp(name, "max-atom-items"))
 216                 ctx.cfg.max_atom_items = atoi(value);
 217         else if (!strcmp(name, "max-message-length"))
 218                 ctx.cfg.max_msg_len = atoi(value);
 219         else if (!strcmp(name, "max-repodesc-length"))
 220                 ctx.cfg.max_repodesc_len = atoi(value);
 221         else if (!strcmp(name, "max-blob-size"))
 222                 ctx.cfg.max_blob_size = atoi(value);
 223         else if (!strcmp(name, "max-repo-count"))
 224                 ctx.cfg.max_repo_count = atoi(value);
 225         else if (!strcmp(name, "max-commit-count"))
 226                 ctx.cfg.max_commit_count = atoi(value);
 227         else if (!strcmp(name, "project-list"))
 228                 ctx.cfg.project_list = xstrdup(expand_macros(value));
 229         else if (!strcmp(name, "scan-path"))
 230                 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
 231                         process_cached_repolist(expand_macros(value));
 232                 else if (ctx.cfg.project_list)
 233                         scan_projects(expand_macros(value),
 234                                       ctx.cfg.project_list, repo_config);
 235                 else
 236                         scan_tree(expand_macros(value), repo_config);
 237         else if (!strcmp(name, "scan-hidden-path"))
 238                 ctx.cfg.scan_hidden_path = atoi(value);
 239         else if (!strcmp(name, "section-from-path"))
 240                 ctx.cfg.section_from_path = atoi(value);
 241         else if (!strcmp(name, "repository-sort"))
 242                 ctx.cfg.repository_sort = xstrdup(value);
 243         else if (!strcmp(name, "section-sort"))
 244                 ctx.cfg.section_sort = atoi(value);
 245         else if (!strcmp(name, "source-filter"))
 246                 ctx.cfg.source_filter = cgit_new_filter(value, SOURCE);
 247         else if (!strcmp(name, "summary-log"))
 248                 ctx.cfg.summary_log = atoi(value);
 249         else if (!strcmp(name, "summary-branches"))
 250                 ctx.cfg.summary_branches = atoi(value);
 251         else if (!strcmp(name, "summary-tags"))
 252                 ctx.cfg.summary_tags = atoi(value);
 253         else if (!strcmp(name, "side-by-side-diffs"))
 254                 ctx.cfg.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
 255         else if (!strcmp(name, "agefile"))
 256                 ctx.cfg.agefile = xstrdup(value);
 257         else if (!strcmp(name, "mimetype-file"))
 258                 ctx.cfg.mimetype_file = xstrdup(value);
 259         else if (!strcmp(name, "renamelimit"))
 260                 ctx.cfg.renamelimit = atoi(value);
 261         else if (!strcmp(name, "remove-suffix"))
 262                 ctx.cfg.remove_suffix = atoi(value);
 263         else if (!strcmp(name, "robots"))
 264                 ctx.cfg.robots = xstrdup(value);
 265         else if (!strcmp(name, "clone-prefix"))
 266                 ctx.cfg.clone_prefix = xstrdup(value);
 267         else if (!strcmp(name, "clone-url"))
 268                 ctx.cfg.clone_url = xstrdup(value);
 269         else if (!strcmp(name, "local-time"))
 270                 ctx.cfg.local_time = atoi(value);
 271         else if (!strcmp(name, "commit-sort")) {
 272                 if (!strcmp(value, "date"))
 273                         ctx.cfg.commit_sort = 1;
 274                 if (!strcmp(value, "topo"))
 275                         ctx.cfg.commit_sort = 2;
 276         } else if (!strcmp(name, "branch-sort")) {
 277                 if (!strcmp(value, "age"))
 278                         ctx.cfg.branch_sort = 1;
 279                 if (!strcmp(value, "name"))
 280                         ctx.cfg.branch_sort = 0;
 281         } else if (starts_with(name, "mimetype."))
 282                 add_mimetype(name + 9, value);
 283         else if (!strcmp(name, "include"))
 284                 parse_configfile(expand_macros(value), config_cb);
 285 }
 286
 287 static void querystring_cb(const char *name, const char *value)
 288 {
 289         if (!value)
 290                 value = "";
 291
 292         if (!strcmp(name,"r")) {
 293                 ctx.qry.repo = xstrdup(value);
 294                 ctx.repo = cgit_get_repoinfo(value);
 295         } else if (!strcmp(name, "p")) {
 296                 ctx.qry.page = xstrdup(value);
 297         } else if (!strcmp(name, "url")) {
 298                 if (*value == '/')
 299                         value++;
 300                 ctx.qry.url = xstrdup(value);
 301                 cgit_parse_url(value);
 302         } else if (!strcmp(name, "qt")) {
 303                 ctx.qry.grep = xstrdup(value);
 304         } else if (!strcmp(name, "q")) {
 305                 ctx.qry.search = xstrdup(value);
 306         } else if (!strcmp(name, "h")) {
 307                 ctx.qry.head = xstrdup(value);
 308                 ctx.qry.has_symref = 1;
 309         } else if (!strcmp(name, "id")) {
 310                 ctx.qry.sha1 = xstrdup(value);
 311                 ctx.qry.has_sha1 = 1;
 312         } else if (!strcmp(name, "id2")) {
 313                 ctx.qry.sha2 = xstrdup(value);
 314                 ctx.qry.has_sha1 = 1;
 315         } else if (!strcmp(name, "ofs")) {
 316                 ctx.qry.ofs = atoi(value);
 317         } else if (!strcmp(name, "path")) {
 318                 ctx.qry.path = trim_end(value, '/');
 319         } else if (!strcmp(name, "name")) {
 320                 ctx.qry.name = xstrdup(value);
 321         } else if (!strcmp(name, "s")) {
 322                 ctx.qry.sort = xstrdup(value);
 323         } else if (!strcmp(name, "showmsg")) {
 324                 ctx.qry.showmsg = atoi(value);
 325         } else if (!strcmp(name, "period")) {
 326                 ctx.qry.period = xstrdup(value);
 327         } else if (!strcmp(name, "dt")) {
 328                 ctx.qry.difftype = atoi(value);
 329                 ctx.qry.has_difftype = 1;
 330         } else if (!strcmp(name, "ss")) {
 331                 /* No longer generated, but there may be links out there. */
 332                 ctx.qry.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
 333                 ctx.qry.has_difftype = 1;
 334         } else if (!strcmp(name, "all")) {
 335                 ctx.qry.show_all = atoi(value);
 336         } else if (!strcmp(name, "context")) {
 337                 ctx.qry.context = atoi(value);
 338         } else if (!strcmp(name, "ignorews")) {
 339                 ctx.qry.ignorews = atoi(value);
 340         } else if (!strcmp(name, "follow")) {
 341                 ctx.qry.follow = atoi(value);
 342         }
 343 }
 344
 345 static void prepare_context(void)
 346 {
 347         memset(&ctx, 0, sizeof(ctx));
 348         ctx.cfg.agefile = "info/web/last-modified";
 349         ctx.cfg.nocache = 0;
 350         ctx.cfg.cache_size = 0;
 351         ctx.cfg.cache_max_create_time = 5;
 352         ctx.cfg.cache_root = CGIT_CACHE_ROOT;
 353         ctx.cfg.cache_about_ttl = 15;
 354         ctx.cfg.cache_snapshot_ttl = 5;
 355         ctx.cfg.cache_repo_ttl = 5;
 356         ctx.cfg.cache_root_ttl = 5;
 357         ctx.cfg.cache_scanrc_ttl = 15;
 358         ctx.cfg.cache_dynamic_ttl = 5;
 359         ctx.cfg.cache_static_ttl = -1;
 360         ctx.cfg.case_sensitive_sort = 1;
 361         ctx.cfg.branch_sort = 0;
 362         ctx.cfg.commit_sort = 0;
 363         ctx.cfg.css = "/cgit.css";
 364         ctx.cfg.logo = "/cgit.png";
 365         ctx.cfg.favicon = "/favicon.ico";
 366         ctx.cfg.local_time = 0;
 367         ctx.cfg.enable_http_clone = 1;
 368         ctx.cfg.enable_index_owner = 1;
 369         ctx.cfg.enable_tree_linenumbers = 1;
 370         ctx.cfg.enable_git_config = 0;
 371         ctx.cfg.max_repo_count = 50;
 372         ctx.cfg.max_commit_count = 50;
 373         ctx.cfg.max_lock_attempts = 5;
 374         ctx.cfg.max_msg_len = 80;
 375         ctx.cfg.max_repodesc_len = 80;
 376         ctx.cfg.max_blob_size = 0;
 377         ctx.cfg.max_stats = 0;
 378         ctx.cfg.project_list = NULL;
 379         ctx.cfg.renamelimit = -1;
 380         ctx.cfg.remove_suffix = 0;
 381         ctx.cfg.robots = "index, nofollow";
 382         ctx.cfg.root_title = "Git repository browser";
 383         ctx.cfg.root_desc = "a fast webinterface for the git dscm";
 384         ctx.cfg.scan_hidden_path = 0;
 385         ctx.cfg.script_name = CGIT_SCRIPT_NAME;
 386         ctx.cfg.section = "";
 387         ctx.cfg.repository_sort = "name";
 388         ctx.cfg.section_sort = 1;
 389         ctx.cfg.summary_branches = 10;
 390         ctx.cfg.summary_log = 10;
 391         ctx.cfg.summary_tags = 10;
 392         ctx.cfg.max_atom_items = 10;
 393         ctx.cfg.difftype = DIFF_UNIFIED;
 394         ctx.env.cgit_config = getenv("CGIT_CONFIG");
 395         ctx.env.http_host = getenv("HTTP_HOST");
 396         ctx.env.https = getenv("HTTPS");
 397         ctx.env.no_http = getenv("NO_HTTP");
 398         ctx.env.path_info = getenv("PATH_INFO");
 399         ctx.env.query_string = getenv("QUERY_STRING");
 400         ctx.env.request_method = getenv("REQUEST_METHOD");
 401         ctx.env.script_name = getenv("SCRIPT_NAME");
 402         ctx.env.server_name = getenv("SERVER_NAME");
 403         ctx.env.server_port = getenv("SERVER_PORT");
 404         ctx.env.http_cookie = getenv("HTTP_COOKIE");
 405         ctx.env.http_referer = getenv("HTTP_REFERER");
 406         ctx.env.content_length = getenv("CONTENT_LENGTH") ? strtoul(getenv("CONTENT_LENGTH"), NULL, 10) : 0;
 407         ctx.env.authenticated = 0;
 408         ctx.page.mimetype = "text/html";
 409         ctx.page.charset = PAGE_ENCODING;
 410         ctx.page.filename = NULL;
 411         ctx.page.size = 0;
 412         ctx.page.modified = time(NULL);
 413         ctx.page.expires = ctx.page.modified;
 414         ctx.page.etag = NULL;
 415         memset(&ctx.cfg.mimetypes, 0, sizeof(struct string_list));
 416         if (ctx.env.script_name)
 417                 ctx.cfg.script_name = xstrdup(ctx.env.script_name);
 418         if (ctx.env.query_string)
 419                 ctx.qry.raw = xstrdup(ctx.env.query_string);
 420         if (!ctx.env.cgit_config)
 421                 ctx.env.cgit_config = CGIT_CONFIG;
 422 }
 423
 424 struct refmatch {
 425         char *req_ref;
 426         char *first_ref;
 427         int match;
 428 };
 429
 430 static int find_current_ref(const char *refname, const struct object_id *oid,
 431                             int flags, void *cb_data)
 432 {
 433         struct refmatch *info;
 434
 435         info = (struct refmatch *)cb_data;
 436         if (!strcmp(refname, info->req_ref))
 437                 info->match = 1;
 438         if (!info->first_ref)
 439                 info->first_ref = xstrdup(refname);
 440         return info->match;
 441 }
 442
 443 static void free_refmatch_inner(struct refmatch *info)
 444 {
 445         if (info->first_ref)
 446                 free(info->first_ref);
 447 }
 448
 449 static char *find_default_branch(struct cgit_repo *repo)
 450 {
 451         struct refmatch info;
 452         char *ref;
 453
 454         info.req_ref = repo->defbranch;
 455         info.first_ref = NULL;
 456         info.match = 0;
 457         for_each_branch_ref(find_current_ref, &info);
 458         if (info.match)
 459                 ref = info.req_ref;
 460         else
 461                 ref = info.first_ref;
 462         if (ref)
 463                 ref = xstrdup(ref);
 464         free_refmatch_inner(&info);
 465
 466         return ref;
 467 }
 468
 469 static char *guess_defbranch(void)
 470 {
 471         const char *ref;
 472         unsigned char sha1[20];
 473
 474         ref = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
 475         if (!ref || !starts_with(ref, "refs/heads/"))
 476                 return "master";
 477         return xstrdup(ref + 11);
 478 }
 479 /* The caller must free filename and ref after calling this. */
 480 static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
 481 {
 482         const char *colon;
 483
 484         *filename = NULL;
 485         *ref = NULL;
 486
 487         if (!readme || !readme[0])
 488                 return;
 489
 490         /* Check if the readme is tracked in the git repo. */
 491         colon = strchr(readme, ':');
 492         if (colon && strlen(colon) > 1) {
 493                 /* If it starts with a colon, we want to use
 494                  * the default branch */
 495                 if (colon == readme && repo->defbranch)
 496                         *ref = xstrdup(repo->defbranch);
 497                 else
 498                         *ref = xstrndup(readme, colon - readme);
 499                 readme = colon + 1;
 500         }
 501
 502         /* Prepend repo path to relative readme path unless tracked. */
 503         if (!(*ref) && readme[0] != '/')
 504                 *filename = fmtalloc("%s/%s", repo->path, readme);
 505         else
 506                 *filename = xstrdup(readme);
 507 }
 508 static void choose_readme(struct cgit_repo *repo)
 509 {
 510         int found;
 511         char *filename, *ref;
 512         struct string_list_item *entry;
 513
 514         if (!repo->readme.nr)
 515                 return;
 516
 517         found = 0;
 518         for_each_string_list_item(entry, &repo->readme) {
 519                 parse_readme(entry->string, &filename, &ref, repo);
 520                 if (!filename) {
 521                         free(filename);
 522                         free(ref);
 523                         continue;
 524                 }
 525                 if (ref) {
 526                         if (cgit_ref_path_exists(filename, ref, 1)) {
 527                                 found = 1;
 528                                 break;
 529                         }
 530                 }
 531                 else if (!access(filename, R_OK)) {
 532                         found = 1;
 533                         break;
 534                 }
 535                 free(filename);
 536                 free(ref);
 537         }
 538         repo->readme.strdup_strings = 1;
 539         string_list_clear(&repo->readme, 0);
 540         repo->readme.strdup_strings = 0;
 541         if (found)
 542                 string_list_append(&repo->readme, filename)->util = ref;
 543 }
 544
 545 static void print_no_repo_clone_urls(const char *url)
 546 {
 547         html("<tr><td><a rel='vcs-git' href='");
 548         html_url_path(url);
 549         html("' title='");
 550         html_attr(ctx.repo->name);
 551         html(" Git repository'>");
 552         html_txt(url);
 553         html("</a></td></tr>\n");
 554 }
 555
 556 static int prepare_repo_cmd(void)
 557 {
 558         unsigned char sha1[20];
 559         int nongit = 0;
 560         int rc;
 561
 562         /* The path to the git repository. */
 563         setenv("GIT_DIR", ctx.repo->path, 1);
 564
 565         /* Do not look in /etc/ for gitconfig and gitattributes. */
 566         setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
 567         setenv("GIT_ATTR_NOSYSTEM", "1", 1);
 568         unsetenv("HOME");
 569         unsetenv("XDG_CONFIG_HOME");
 570
 571         /* Setup the git directory and initialize the notes system. Both of these
 572          * load local configuration from the git repository, so we do them both while
 573          * the HOME variables are unset. */
 574         setup_git_directory_gently(&nongit);
 575         init_display_notes(NULL);
 576
 577         if (nongit) {
 578                 const char *name = ctx.repo->name;
 579                 rc = errno;
 580                 ctx.page.title = fmtalloc("%s - %s", ctx.cfg.root_title,
 581                                                 "config error");
 582                 ctx.repo = NULL;
 583                 cgit_print_http_headers();
 584                 cgit_print_docstart();
 585                 cgit_print_pageheader();
 586                 cgit_print_error("Failed to open %s: %s", name,
 587                                  rc ? strerror(rc) : "Not a valid git repository");
 588                 cgit_print_docend();
 589                 return 1;
 590         }
 591         ctx.page.title = fmtalloc("%s - %s", ctx.repo->name, ctx.repo->desc);
 592
 593         if (!ctx.repo->defbranch)
 594                 ctx.repo->defbranch = guess_defbranch();
 595
 596         if (!ctx.qry.head) {
 597                 ctx.qry.nohead = 1;
 598                 ctx.qry.head = find_default_branch(ctx.repo);
 599         }
 600
 601         if (!ctx.qry.head) {
 602                 cgit_print_http_headers();
 603                 cgit_print_docstart();
 604                 cgit_print_pageheader();
 605                 cgit_print_error("Repository seems to be empty");
 606                 if (!strcmp(ctx.qry.page, "summary")) {
 607                         html("<table class='list'><tr class='nohover'><td>&nbsp;</td></tr><tr class='nohover'><th class='left'>Clone</th></tr>\n");
 608                         cgit_prepare_repo_env(ctx.repo);
 609                         cgit_add_clone_urls(print_no_repo_clone_urls);
 610                         html("</table>\n");
 611                 }
 612                 cgit_print_docend();
 613                 return 1;
 614         }
 615
 616         if (get_sha1(ctx.qry.head, sha1)) {
 617                 char *tmp = xstrdup(ctx.qry.head);
 618                 ctx.qry.head = ctx.repo->defbranch;
 619                 cgit_print_error_page(404, "Not found",
 620                                 "Invalid branch: %s", tmp);
 621                 free(tmp);
 622                 return 1;
 623         }
 624         string_list_sort(&ctx.repo->submodules);
 625         cgit_prepare_repo_env(ctx.repo);
 626         choose_readme(ctx.repo);
 627         return 0;
 628 }
 629
 630 static inline void open_auth_filter(const char *function)
 631 {
 632         cgit_open_filter(ctx.cfg.auth_filter, function,
 633                 ctx.env.http_cookie ? ctx.env.http_cookie : "",
 634                 ctx.env.request_method ? ctx.env.request_method : "",
 635                 ctx.env.query_string ? ctx.env.query_string : "",
 636                 ctx.env.http_referer ? ctx.env.http_referer : "",
 637                 ctx.env.path_info ? ctx.env.path_info : "",
 638                 ctx.env.http_host ? ctx.env.http_host : "",
 639                 ctx.env.https ? ctx.env.https : "",
 640                 ctx.qry.repo ? ctx.qry.repo : "",
 641                 ctx.qry.page ? ctx.qry.page : "",
 642                 ctx.qry.url ? ctx.qry.url : "",
 643                 cgit_loginurl());
 644 }
 645
 646 /* We intentionally keep this rather small, instead of looping and
 647  * feeding it to the filter a couple bytes at a time. This way, the
 648  * filter itself does not need to handle any denial of service or
 649  * buffer bloat issues. If this winds up being too small, people
 650  * will complain on the mailing list, and we'll increase it as needed. */
 651 #define MAX_AUTHENTICATION_POST_BYTES 4096
 652 /* The filter is expected to spit out "Status: " and all headers. */
 653 static inline void authenticate_post(void)
 654 {
 655         char buffer[MAX_AUTHENTICATION_POST_BYTES];
 656         unsigned int len;
 657
 658         open_auth_filter("authenticate-post");
 659         len = ctx.env.content_length;
 660         if (len > MAX_AUTHENTICATION_POST_BYTES)
 661                 len = MAX_AUTHENTICATION_POST_BYTES;
 662         if (read(STDIN_FILENO, buffer, len) < 0)
 663                 die_errno("Could not read POST from stdin");
 664         if (write(STDOUT_FILENO, buffer, len) < 0)
 665                 die_errno("Could not write POST to stdout");
 666         cgit_close_filter(ctx.cfg.auth_filter);
 667         exit(0);
 668 }
 669
 670 static inline void authenticate_cookie(void)
 671 {
 672         /* If we don't have an auth_filter, consider all cookies valid, and thus return early. */
 673         if (!ctx.cfg.auth_filter) {
 674                 ctx.env.authenticated = 1;
 675                 return;
 676         }
 677
 678         /* If we're having something POST'd to /login, we're authenticating POST,
 679          * instead of the cookie, so call authenticate_post and bail out early.
 680          * This pattern here should match /?p=login with POST. */
 681         if (ctx.env.request_method && ctx.qry.page && !ctx.repo && \
 682             !strcmp(ctx.env.request_method, "POST") && !strcmp(ctx.qry.page, "login")) {
 683                 authenticate_post();
 684                 return;
 685         }
 686
 687         /* If we've made it this far, we're authenticating the cookie for real, so do that. */
 688         open_auth_filter("authenticate-cookie");
 689         ctx.env.authenticated = cgit_close_filter(ctx.cfg.auth_filter);
 690 }
 691
 692 static void process_request(void)
 693 {
 694         struct cgit_cmd *cmd;
 695
 696         /* If we're not yet authenticated, no matter what page we're on,
 697          * display the authentication body from the auth_filter. This should
 698          * never be cached. */
 699         if (!ctx.env.authenticated) {
 700                 ctx.page.title = "Authentication Required";
 701                 cgit_print_http_headers();
 702                 cgit_print_docstart();
 703                 cgit_print_pageheader();
 704                 open_auth_filter("body");
 705                 cgit_close_filter(ctx.cfg.auth_filter);
 706                 cgit_print_docend();
 707                 return;
 708         }
 709
 710         cmd = cgit_get_cmd();
 711         if (!cmd) {
 712                 ctx.page.title = "cgit error";
 713                 cgit_print_error_page(404, "Not found", "Invalid request");
 714                 return;
 715         }
 716
 717         if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
 718                 ctx.page.title = "cgit error";
 719                 cgit_print_error_page(404, "Not found", "Invalid request");
 720                 return;
 721         }
 722
 723         /* If cmd->want_vpath is set, assume ctx.qry.path contains a "virtual"
 724          * in-project path limit to be made available at ctx.qry.vpath.
 725          * Otherwise, no path limit is in effect (ctx.qry.vpath = NULL).
 726          */
 727         ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
 728
 729         if (cmd->want_repo && !ctx.repo) {
 730                 cgit_print_error_page(400, "Bad request",
 731                                 "No repository selected");
 732                 return;
 733         }
 734
 735         if (ctx.repo && prepare_repo_cmd())
 736                 return;
 737
 738         cmd->fn();
 739 }
 740
 741 static int cmp_repos(const void *a, const void *b)
 742 {
 743         const struct cgit_repo *ra = a, *rb = b;
 744         return strcmp(ra->url, rb->url);
 745 }
 746
 747 static char *build_snapshot_setting(int bitmap)
 748 {
 749         const struct cgit_snapshot_format *f;
 750         struct strbuf result = STRBUF_INIT;
 751
 752         for (f = cgit_snapshot_formats; f->suffix; f++) {
 753                 if (f->bit & bitmap) {
 754                         if (result.len)
 755                                 strbuf_addch(&result, ' ');
 756                         strbuf_addstr(&result, f->suffix);
 757                 }
 758         }
 759         return strbuf_detach(&result, NULL);
 760 }
 761
 762 static char *get_first_line(char *txt)
 763 {
 764         char *t = xstrdup(txt);
 765         char *p = strchr(t, '\n');
 766         if (p)
 767                 *p = '\0';
 768         return t;
 769 }
 770
 771 static void print_repo(FILE *f, struct cgit_repo *repo)
 772 {
 773         struct string_list_item *item;
 774         fprintf(f, "repo.url=%s\n", repo->url);
 775         fprintf(f, "repo.name=%s\n", repo->name);
 776         fprintf(f, "repo.path=%s\n", repo->path);
 777         if (repo->owner)
 778                 fprintf(f, "repo.owner=%s\n", repo->owner);
 779         if (repo->desc) {
 780                 char *tmp = get_first_line(repo->desc);
 781                 fprintf(f, "repo.desc=%s\n", tmp);
 782                 free(tmp);
 783         }
 784         for_each_string_list_item(item, &repo->readme) {
 785                 if (item->util)
 786                         fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
 787                 else
 788                         fprintf(f, "repo.readme=%s\n", item->string);
 789         }
 790         if (repo->defbranch)
 791                 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
 792         if (repo->module_link)
 793                 fprintf(f, "repo.module-link=%s\n", repo->module_link);
 794         if (repo->section)
 795                 fprintf(f, "repo.section=%s\n", repo->section);
 796         if (repo->clone_url)
 797                 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
 798         fprintf(f, "repo.enable-commit-graph=%d\n",
 799                 repo->enable_commit_graph);
 800         fprintf(f, "repo.enable-log-filecount=%d\n",
 801                 repo->enable_log_filecount);
 802         fprintf(f, "repo.enable-log-linecount=%d\n",
 803                 repo->enable_log_linecount);
 804         if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
 805                 cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
 806         if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
 807                 cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
 808         if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
 809                 cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
 810         if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
 811                 cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
 812         if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
 813                 cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
 814         if (repo->snapshots != ctx.cfg.snapshots) {
 815                 char *tmp = build_snapshot_setting(repo->snapshots);
 816                 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
 817                 free(tmp);
 818         }
 819         if (repo->max_stats != ctx.cfg.max_stats)
 820                 fprintf(f, "repo.max-stats=%s\n",
 821                         cgit_find_stats_periodname(repo->max_stats));
 822         if (repo->logo)
 823                 fprintf(f, "repo.logo=%s\n", repo->logo);
 824         if (repo->logo_link)
 825                 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
 826         fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
 827         fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
 828         fprintf(f, "repo.enable-html-serving=%d\n", repo->enable_html_serving);
 829         if (repo->branch_sort == 1)
 830                 fprintf(f, "repo.branch-sort=age\n");
 831         if (repo->commit_sort) {
 832                 if (repo->commit_sort == 1)
 833                         fprintf(f, "repo.commit-sort=date\n");
 834                 else if (repo->commit_sort == 2)
 835                         fprintf(f, "repo.commit-sort=topo\n");
 836         }
 837         fprintf(f, "repo.hide=%d\n", repo->hide);
 838         fprintf(f, "repo.ignore=%d\n", repo->ignore);
 839         fprintf(f, "\n");
 840 }
 841
 842 static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
 843 {
 844         int i;
 845
 846         for (i = start; i < list->count; i++)
 847                 print_repo(f, &list->repos[i]);
 848 }
 849
 850 /* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
 851  * and return 0 on success.
 852  */
 853 static int generate_cached_repolist(const char *path, const char *cached_rc)
 854 {
 855         struct strbuf locked_rc = STRBUF_INIT;
 856         int result = 0;
 857         int idx;
 858         FILE *f;
 859
 860         strbuf_addf(&locked_rc, "%s.lock", cached_rc);
 861         f = fopen(locked_rc.buf, "wx");
 862         if (!f) {
 863                 /* Inform about the error unless the lockfile already existed,
 864                  * since that only means we've got concurrent requests.
 865                  */
 866                 result = errno;
 867                 if (result != EEXIST)
 868                         fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
 869                                 locked_rc.buf, strerror(result), result);
 870                 goto out;
 871         }
 872         idx = cgit_repolist.count;
 873         if (ctx.cfg.project_list)
 874                 scan_projects(path, ctx.cfg.project_list, repo_config);
 875         else
 876                 scan_tree(path, repo_config);
 877         print_repolist(f, &cgit_repolist, idx);
 878         if (rename(locked_rc.buf, cached_rc))
 879                 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
 880                         locked_rc.buf, cached_rc, strerror(errno), errno);
 881         fclose(f);
 882 out:
 883         strbuf_release(&locked_rc);
 884         return result;
 885 }
 886
 887 static void process_cached_repolist(const char *path)
 888 {
 889         struct stat st;
 890         struct strbuf cached_rc = STRBUF_INIT;
 891         time_t age;
 892         unsigned long hash;
 893
 894         hash = hash_str(path);
 895         if (ctx.cfg.project_list)
 896                 hash += hash_str(ctx.cfg.project_list);
 897         strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
 898
 899         if (stat(cached_rc.buf, &st)) {
 900                 /* Nothing is cached, we need to scan without forking. And
 901                  * if we fail to generate a cached repolist, we need to
 902                  * invoke scan_tree manually.
 903                  */
 904                 if (generate_cached_repolist(path, cached_rc.buf)) {
 905                         if (ctx.cfg.project_list)
 906                                 scan_projects(path, ctx.cfg.project_list,
 907                                               repo_config);
 908                         else
 909                                 scan_tree(path, repo_config);
 910                 }
 911                 goto out;
 912         }
 913
 914         parse_configfile(cached_rc.buf, config_cb);
 915
 916         /* If the cached configfile hasn't expired, lets exit now */
 917         age = time(NULL) - st.st_mtime;
 918         if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
 919                 goto out;
 920
 921         /* The cached repolist has been parsed, but it was old. So lets
 922          * rescan the specified path and generate a new cached repolist
 923          * in a child-process to avoid latency for the current request.
 924          */
 925         if (fork())
 926                 goto out;
 927
 928         exit(generate_cached_repolist(path, cached_rc.buf));
 929 out:
 930         strbuf_release(&cached_rc);
 931 }
 932
 933 static void cgit_parse_args(int argc, const char **argv)
 934 {
 935         int i;
 936         int scan = 0;
 937
 938         for (i = 1; i < argc; i++) {
 939                 if (!strcmp(argv[i], "--version")) {
 940                         printf("CGit %s | http://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
 941 #ifdef NO_LUA
 942                         printf("[-] ");
 943 #else
 944                         printf("[+] ");
 945 #endif
 946                         printf("Lua scripting\n");
 947 #ifndef HAVE_LINUX_SENDFILE
 948                         printf("[-] ");
 949 #else
 950                         printf("[+] ");
 951 #endif
 952                         printf("Linux sendfile() usage\n");
 953
 954                         exit(0);
 955                 }
 956                 if (starts_with(argv[i], "--cache=")) {
 957                         ctx.cfg.cache_root = xstrdup(argv[i] + 8);
 958                 } else if (!strcmp(argv[i], "--nocache")) {
 959                         ctx.cfg.nocache = 1;
 960                 } else if (!strcmp(argv[i], "--nohttp")) {
 961                         ctx.env.no_http = "1";
 962                 } else if (starts_with(argv[i], "--query=")) {
 963                         ctx.qry.raw = xstrdup(argv[i] + 8);
 964                 } else if (starts_with(argv[i], "--repo=")) {
 965                         ctx.qry.repo = xstrdup(argv[i] + 7);
 966                 } else if (starts_with(argv[i], "--page=")) {
 967                         ctx.qry.page = xstrdup(argv[i] + 7);
 968                 } else if (starts_with(argv[i], "--head=")) {
 969                         ctx.qry.head = xstrdup(argv[i] + 7);
 970                         ctx.qry.has_symref = 1;
 971                 } else if (starts_with(argv[i], "--sha1=")) {
 972                         ctx.qry.sha1 = xstrdup(argv[i] + 7);
 973                         ctx.qry.has_sha1 = 1;
 974                 } else if (starts_with(argv[i], "--ofs=")) {
 975                         ctx.qry.ofs = atoi(argv[i] + 6);
 976                 } else if (starts_with(argv[i], "--scan-tree=") ||
 977                            starts_with(argv[i], "--scan-path=")) {
 978                         /*
 979                          * HACK: The global snapshot bit mask defines the set
 980                          * of allowed snapshot formats, but the config file
 981                          * hasn't been parsed yet so the mask is currently 0.
 982                          * By setting all bits high before scanning we make
 983                          * sure that any in-repo cgitrc snapshot setting is
 984                          * respected by scan_tree().
 985                          *
 986                          * NOTE: We assume that there aren't more than 8
 987                          * different snapshot formats supported by cgit...
 988                          */
 989                         ctx.cfg.snapshots = 0xFF;
 990                         scan++;
 991                         scan_tree(argv[i] + 12, repo_config);
 992                 }
 993         }
 994         if (scan) {
 995                 qsort(cgit_repolist.repos, cgit_repolist.count,
 996                         sizeof(struct cgit_repo), cmp_repos);
 997                 print_repolist(stdout, &cgit_repolist, 0);
 998                 exit(0);
 999         }
1000 }
1001
1002 static int calc_ttl(void)
1003 {
1004         if (!ctx.repo)
1005                 return ctx.cfg.cache_root_ttl;
1006
1007         if (!ctx.qry.page)
1008                 return ctx.cfg.cache_repo_ttl;
1009
1010         if (!strcmp(ctx.qry.page, "about"))
1011                 return ctx.cfg.cache_about_ttl;
1012
1013         if (!strcmp(ctx.qry.page, "snapshot"))
1014                 return ctx.cfg.cache_snapshot_ttl;
1015
1016         if (ctx.qry.has_sha1)
1017                 return ctx.cfg.cache_static_ttl;
1018
1019         if (ctx.qry.has_symref)
1020                 return ctx.cfg.cache_dynamic_ttl;
1021
1022         return ctx.cfg.cache_repo_ttl;
1023 }
1024
1025 int main(int argc, const char **argv)
1026 {
1027         const char *path;
1028         int err, ttl;
1029
1030         cgit_init_filters();
1031         atexit(cgit_cleanup_filters);
1032
1033         prepare_context();
1034         cgit_repolist.length = 0;
1035         cgit_repolist.count = 0;
1036         cgit_repolist.repos = NULL;
1037
1038         cgit_parse_args(argc, argv);
1039         parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
1040         ctx.repo = NULL;
1041         http_parse_querystring(ctx.qry.raw, querystring_cb);
1042
1043         /* If virtual-root isn't specified in cgitrc, lets pretend
1044          * that virtual-root equals SCRIPT_NAME, minus any possibly
1045          * trailing slashes.
1046          */
1047         if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
1048                 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
1049
1050         /* If no url parameter is specified on the querystring, lets
1051          * use PATH_INFO as url. This allows cgit to work with virtual
1052          * urls without the need for rewriterules in the webserver (as
1053          * long as PATH_INFO is included in the cache lookup key).
1054          */
1055         path = ctx.env.path_info;
1056         if (!ctx.qry.url && path) {
1057                 if (path[0] == '/')
1058                         path++;
1059                 ctx.qry.url = xstrdup(path);
1060                 if (ctx.qry.raw) {
1061                         char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
1062                         free(ctx.qry.raw);
1063                         ctx.qry.raw = newqry;
1064                 } else
1065                         ctx.qry.raw = xstrdup(ctx.qry.url);
1066                 cgit_parse_url(ctx.qry.url);
1067         }
1068
1069         /* Before we go any further, we set ctx.env.authenticated by checking to see
1070          * if the supplied cookie is valid. All cookies are valid if there is no
1071          * auth_filter. If there is an auth_filter, the filter decides. */
1072         authenticate_cookie();
1073
1074         ttl = calc_ttl();
1075         if (ttl < 0)
1076                 ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
1077         else
1078                 ctx.page.expires += ttl * 60;
1079         if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
1080                 ctx.cfg.nocache = 1;
1081         if (ctx.cfg.nocache)
1082                 ctx.cfg.cache_size = 0;
1083         err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
1084                             ctx.qry.raw, ttl, process_request);
1085         cgit_cleanup_filters();
1086         if (err)
1087                 cgit_print_error("Error processing page: %s (%d)",
1088                                  strerror(err), err);
1089         return err;
1090 }