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, "branch-sort")) {
  59                 if (!strcmp(value, "age"))
  60                         repo->branch_sort = 1;
  61                 if (!strcmp(value, "name"))
  62                         repo->branch_sort = 0;
  63         } else if (!strcmp(name, "commit-sort")) {
  64                 if (!strcmp(value, "date"))
  65                         repo->commit_sort = 1;
  66                 if (!strcmp(value, "topo"))
  67                         repo->commit_sort = 2;
  68         } else if (!strcmp(name, "max-stats"))
  69                 repo->max_stats = cgit_find_stats_period(value, NULL);
  70         else if (!strcmp(name, "module-link"))
  71                 repo->module_link= xstrdup(value);
  72         else if (starts_with(name, "module-link.")) {
  73                 item = string_list_append(&repo->submodules, xstrdup(name + 12));
  74                 item->util = xstrdup(value);
  75         } else if (!strcmp(name, "section"))
  76                 repo->section = xstrdup(value);
  77         else if (!strcmp(name, "readme") && value != NULL) {
  78                 if (repo->readme.items == ctx.cfg.readme.items)
  79                         memset(&repo->readme, 0, sizeof(repo->readme));
  80                 string_list_append(&repo->readme, xstrdup(value));
  81         } else if (!strcmp(name, "logo") && value != NULL)
  82                 repo->logo = xstrdup(value);
  83         else if (!strcmp(name, "logo-link") && value != NULL)
  84                 repo->logo_link = xstrdup(value);
  85         else if (!strcmp(name, "hide"))
  86                 repo->hide = atoi(value);
  87         else if (!strcmp(name, "ignore"))
  88                 repo->ignore = atoi(value);
  89         else if (ctx.cfg.enable_filter_overrides) {
  90                 if (!strcmp(name, "about-filter"))
  91                         repo->about_filter = cgit_new_filter(value, ABOUT);
  92                 else if (!strcmp(name, "commit-filter"))
  93                         repo->commit_filter = cgit_new_filter(value, COMMIT);
  94                 else if (!strcmp(name, "source-filter"))
  95                         repo->source_filter = cgit_new_filter(value, SOURCE);
  96                 else if (!strcmp(name, "email-filter"))
  97                         repo->email_filter = cgit_new_filter(value, EMAIL);
  98                 else if (!strcmp(name, "owner-filter"))
  99                         repo->owner_filter = cgit_new_filter(value, OWNER);
 100         }
 101 }
 102
 103 static void config_cb(const char *name, const char *value)
 104 {
 105         if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
 106                 ctx.cfg.section = xstrdup(value);
 107         else if (!strcmp(name, "repo.url"))
 108                 ctx.repo = cgit_add_repo(value);
 109         else if (ctx.repo && !strcmp(name, "repo.path"))
 110                 ctx.repo->path = trim_end(value, '/');
 111         else if (ctx.repo && starts_with(name, "repo."))
 112                 repo_config(ctx.repo, name + 5, value);
 113         else if (!strcmp(name, "readme") && value != NULL)
 114                 string_list_append(&ctx.cfg.readme, xstrdup(value));
 115         else if (!strcmp(name, "root-title"))
 116                 ctx.cfg.root_title = xstrdup(value);
 117         else if (!strcmp(name, "root-desc"))
 118                 ctx.cfg.root_desc = xstrdup(value);
 119         else if (!strcmp(name, "root-readme"))
 120                 ctx.cfg.root_readme = xstrdup(value);
 121         else if (!strcmp(name, "css"))
 122                 ctx.cfg.css = xstrdup(value);
 123         else if (!strcmp(name, "favicon"))
 124                 ctx.cfg.favicon = xstrdup(value);
 125         else if (!strcmp(name, "footer"))
 126                 ctx.cfg.footer = xstrdup(value);
 127         else if (!strcmp(name, "head-include"))
 128                 ctx.cfg.head_include = xstrdup(value);
 129         else if (!strcmp(name, "header"))
 130                 ctx.cfg.header = xstrdup(value);
 131         else if (!strcmp(name, "logo"))
 132                 ctx.cfg.logo = xstrdup(value);
 133         else if (!strcmp(name, "index-header"))
 134                 ctx.cfg.index_header = xstrdup(value);
 135         else if (!strcmp(name, "index-info"))
 136                 ctx.cfg.index_info = xstrdup(value);
 137         else if (!strcmp(name, "logo-link"))
 138                 ctx.cfg.logo_link = xstrdup(value);
 139         else if (!strcmp(name, "module-link"))
 140                 ctx.cfg.module_link = xstrdup(value);
 141         else if (!strcmp(name, "strict-export"))
 142                 ctx.cfg.strict_export = xstrdup(value);
 143         else if (!strcmp(name, "virtual-root")) {
 144                 ctx.cfg.virtual_root = ensure_end(value, '/');
 145         } else if (!strcmp(name, "nocache"))
 146                 ctx.cfg.nocache = atoi(value);
 147         else if (!strcmp(name, "noplainemail"))
 148                 ctx.cfg.noplainemail = atoi(value);
 149         else if (!strcmp(name, "noheader"))
 150                 ctx.cfg.noheader = atoi(value);
 151         else if (!strcmp(name, "snapshots"))
 152                 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 153         else if (!strcmp(name, "enable-filter-overrides"))
 154                 ctx.cfg.enable_filter_overrides = atoi(value);
 155         else if (!strcmp(name, "enable-follow-links"))
 156                 ctx.cfg.enable_follow_links = atoi(value);
 157         else if (!strcmp(name, "enable-http-clone"))
 158                 ctx.cfg.enable_http_clone = atoi(value);
 159         else if (!strcmp(name, "enable-index-links"))
 160                 ctx.cfg.enable_index_links = atoi(value);
 161         else if (!strcmp(name, "enable-index-owner"))
 162                 ctx.cfg.enable_index_owner = atoi(value);
 163         else if (!strcmp(name, "enable-commit-graph"))
 164                 ctx.cfg.enable_commit_graph = atoi(value);
 165         else if (!strcmp(name, "enable-log-filecount"))
 166                 ctx.cfg.enable_log_filecount = atoi(value);
 167         else if (!strcmp(name, "enable-log-linecount"))
 168                 ctx.cfg.enable_log_linecount = atoi(value);
 169         else if (!strcmp(name, "enable-remote-branches"))
 170                 ctx.cfg.enable_remote_branches = atoi(value);
 171         else if (!strcmp(name, "enable-subject-links"))
 172                 ctx.cfg.enable_subject_links = atoi(value);
 173         else if (!strcmp(name, "enable-tree-linenumbers"))
 174                 ctx.cfg.enable_tree_linenumbers = atoi(value);
 175         else if (!strcmp(name, "enable-git-config"))
 176                 ctx.cfg.enable_git_config = atoi(value);
 177         else if (!strcmp(name, "max-stats"))
 178                 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
 179         else if (!strcmp(name, "cache-size"))
 180                 ctx.cfg.cache_size = atoi(value);
 181         else if (!strcmp(name, "cache-root"))
 182                 ctx.cfg.cache_root = xstrdup(expand_macros(value));
 183         else if (!strcmp(name, "cache-root-ttl"))
 184                 ctx.cfg.cache_root_ttl = atoi(value);
 185         else if (!strcmp(name, "cache-repo-ttl"))
 186                 ctx.cfg.cache_repo_ttl = atoi(value);
 187         else if (!strcmp(name, "cache-scanrc-ttl"))
 188                 ctx.cfg.cache_scanrc_ttl = atoi(value);
 189         else if (!strcmp(name, "cache-static-ttl"))
 190                 ctx.cfg.cache_static_ttl = atoi(value);
 191         else if (!strcmp(name, "cache-dynamic-ttl"))
 192                 ctx.cfg.cache_dynamic_ttl = atoi(value);
 193         else if (!strcmp(name, "cache-about-ttl"))
 194                 ctx.cfg.cache_about_ttl = atoi(value);
 195         else if (!strcmp(name, "cache-snapshot-ttl"))
 196                 ctx.cfg.cache_snapshot_ttl = atoi(value);
 197         else if (!strcmp(name, "case-sensitive-sort"))
 198                 ctx.cfg.case_sensitive_sort = atoi(value);
 199         else if (!strcmp(name, "about-filter"))
 200                 ctx.cfg.about_filter = cgit_new_filter(value, ABOUT);
 201         else if (!strcmp(name, "commit-filter"))
 202                 ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
 203         else if (!strcmp(name, "email-filter"))
 204                 ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
 205         else if (!strcmp(name, "owner-filter"))
 206                 ctx.cfg.owner_filter = cgit_new_filter(value, OWNER);
 207         else if (!strcmp(name, "auth-filter"))
 208                 ctx.cfg.auth_filter = cgit_new_filter(value, AUTH);
 209         else if (!strcmp(name, "embedded"))
 210                 ctx.cfg.embedded = atoi(value);
 211         else if (!strcmp(name, "max-atom-items"))
 212                 ctx.cfg.max_atom_items = atoi(value);
 213         else if (!strcmp(name, "max-message-length"))
 214                 ctx.cfg.max_msg_len = atoi(value);
 215         else if (!strcmp(name, "max-repodesc-length"))
 216                 ctx.cfg.max_repodesc_len = atoi(value);
 217         else if (!strcmp(name, "max-blob-size"))
 218                 ctx.cfg.max_blob_size = atoi(value);
 219         else if (!strcmp(name, "max-repo-count"))
 220                 ctx.cfg.max_repo_count = atoi(value);
 221         else if (!strcmp(name, "max-commit-count"))
 222                 ctx.cfg.max_commit_count = atoi(value);
 223         else if (!strcmp(name, "project-list"))
 224                 ctx.cfg.project_list = xstrdup(expand_macros(value));
 225         else if (!strcmp(name, "scan-path"))
 226                 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
 227                         process_cached_repolist(expand_macros(value));
 228                 else if (ctx.cfg.project_list)
 229                         scan_projects(expand_macros(value),
 230                                       ctx.cfg.project_list, repo_config);
 231                 else
 232                         scan_tree(expand_macros(value), repo_config);
 233         else if (!strcmp(name, "scan-hidden-path"))
 234                 ctx.cfg.scan_hidden_path = atoi(value);
 235         else if (!strcmp(name, "section-from-path"))
 236                 ctx.cfg.section_from_path = atoi(value);
 237         else if (!strcmp(name, "repository-sort"))
 238                 ctx.cfg.repository_sort = xstrdup(value);
 239         else if (!strcmp(name, "section-sort"))
 240                 ctx.cfg.section_sort = atoi(value);
 241         else if (!strcmp(name, "source-filter"))
 242                 ctx.cfg.source_filter = cgit_new_filter(value, SOURCE);
 243         else if (!strcmp(name, "summary-log"))
 244                 ctx.cfg.summary_log = atoi(value);
 245         else if (!strcmp(name, "summary-branches"))
 246                 ctx.cfg.summary_branches = atoi(value);
 247         else if (!strcmp(name, "summary-tags"))
 248                 ctx.cfg.summary_tags = atoi(value);
 249         else if (!strcmp(name, "side-by-side-diffs"))
 250                 ctx.cfg.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
 251         else if (!strcmp(name, "agefile"))
 252                 ctx.cfg.agefile = xstrdup(value);
 253         else if (!strcmp(name, "mimetype-file"))
 254                 ctx.cfg.mimetype_file = xstrdup(value);
 255         else if (!strcmp(name, "renamelimit"))
 256                 ctx.cfg.renamelimit = atoi(value);
 257         else if (!strcmp(name, "remove-suffix"))
 258                 ctx.cfg.remove_suffix = atoi(value);
 259         else if (!strcmp(name, "robots"))
 260                 ctx.cfg.robots = xstrdup(value);
 261         else if (!strcmp(name, "clone-prefix"))
 262                 ctx.cfg.clone_prefix = xstrdup(value);
 263         else if (!strcmp(name, "clone-url"))
 264                 ctx.cfg.clone_url = xstrdup(value);
 265         else if (!strcmp(name, "local-time"))
 266                 ctx.cfg.local_time = atoi(value);
 267         else if (!strcmp(name, "commit-sort")) {
 268                 if (!strcmp(value, "date"))
 269                         ctx.cfg.commit_sort = 1;
 270                 if (!strcmp(value, "topo"))
 271                         ctx.cfg.commit_sort = 2;
 272         } else if (!strcmp(name, "branch-sort")) {
 273                 if (!strcmp(value, "age"))
 274                         ctx.cfg.branch_sort = 1;
 275                 if (!strcmp(value, "name"))
 276                         ctx.cfg.branch_sort = 0;
 277         } else if (starts_with(name, "mimetype."))
 278                 add_mimetype(name + 9, value);
 279         else if (!strcmp(name, "include"))
 280                 parse_configfile(expand_macros(value), config_cb);
 281 }
 282
 283 static void querystring_cb(const char *name, const char *value)
 284 {
 285         if (!value)
 286                 value = "";
 287
 288         if (!strcmp(name,"r")) {
 289                 ctx.qry.repo = xstrdup(value);
 290                 ctx.repo = cgit_get_repoinfo(value);
 291         } else if (!strcmp(name, "p")) {
 292                 ctx.qry.page = xstrdup(value);
 293         } else if (!strcmp(name, "url")) {
 294                 if (*value == '/')
 295                         value++;
 296                 ctx.qry.url = xstrdup(value);
 297                 cgit_parse_url(value);
 298         } else if (!strcmp(name, "qt")) {
 299                 ctx.qry.grep = xstrdup(value);
 300         } else if (!strcmp(name, "q")) {
 301                 ctx.qry.search = xstrdup(value);
 302         } else if (!strcmp(name, "h")) {
 303                 ctx.qry.head = xstrdup(value);
 304                 ctx.qry.has_symref = 1;
 305         } else if (!strcmp(name, "id")) {
 306                 ctx.qry.sha1 = xstrdup(value);
 307                 ctx.qry.has_sha1 = 1;
 308         } else if (!strcmp(name, "id2")) {
 309                 ctx.qry.sha2 = xstrdup(value);
 310                 ctx.qry.has_sha1 = 1;
 311         } else if (!strcmp(name, "ofs")) {
 312                 ctx.qry.ofs = atoi(value);
 313         } else if (!strcmp(name, "path")) {
 314                 ctx.qry.path = trim_end(value, '/');
 315         } else if (!strcmp(name, "name")) {
 316                 ctx.qry.name = xstrdup(value);
 317         } else if (!strcmp(name, "mimetype")) {
 318                 ctx.qry.mimetype = xstrdup(value);
 319         } else if (!strcmp(name, "s")) {
 320                 ctx.qry.sort = xstrdup(value);
 321         } else if (!strcmp(name, "showmsg")) {
 322                 ctx.qry.showmsg = atoi(value);
 323         } else if (!strcmp(name, "period")) {
 324                 ctx.qry.period = xstrdup(value);
 325         } else if (!strcmp(name, "dt")) {
 326                 ctx.qry.difftype = atoi(value);
 327                 ctx.qry.has_difftype = 1;
 328         } else if (!strcmp(name, "ss")) {
 329                 /* No longer generated, but there may be links out there. */
 330                 ctx.qry.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
 331                 ctx.qry.has_difftype = 1;
 332         } else if (!strcmp(name, "all")) {
 333                 ctx.qry.show_all = atoi(value);
 334         } else if (!strcmp(name, "context")) {
 335                 ctx.qry.context = atoi(value);
 336         } else if (!strcmp(name, "ignorews")) {
 337                 ctx.qry.ignorews = atoi(value);
 338         } else if (!strcmp(name, "follow")) {
 339                 ctx.qry.follow = atoi(value);
 340         }
 341 }
 342
 343 static void prepare_context(void)
 344 {
 345         memset(&ctx, 0, sizeof(ctx));
 346         ctx.cfg.agefile = "info/web/last-modified";
 347         ctx.cfg.nocache = 0;
 348         ctx.cfg.cache_size = 0;
 349         ctx.cfg.cache_max_create_time = 5;
 350         ctx.cfg.cache_root = CGIT_CACHE_ROOT;
 351         ctx.cfg.cache_about_ttl = 15;
 352         ctx.cfg.cache_snapshot_ttl = 5;
 353         ctx.cfg.cache_repo_ttl = 5;
 354         ctx.cfg.cache_root_ttl = 5;
 355         ctx.cfg.cache_scanrc_ttl = 15;
 356         ctx.cfg.cache_dynamic_ttl = 5;
 357         ctx.cfg.cache_static_ttl = -1;
 358         ctx.cfg.case_sensitive_sort = 1;
 359         ctx.cfg.branch_sort = 0;
 360         ctx.cfg.commit_sort = 0;
 361         ctx.cfg.css = "/cgit.css";
 362         ctx.cfg.logo = "/cgit.png";
 363         ctx.cfg.favicon = "/favicon.ico";
 364         ctx.cfg.local_time = 0;
 365         ctx.cfg.enable_http_clone = 1;
 366         ctx.cfg.enable_index_owner = 1;
 367         ctx.cfg.enable_tree_linenumbers = 1;
 368         ctx.cfg.enable_git_config = 0;
 369         ctx.cfg.max_repo_count = 50;
 370         ctx.cfg.max_commit_count = 50;
 371         ctx.cfg.max_lock_attempts = 5;
 372         ctx.cfg.max_msg_len = 80;
 373         ctx.cfg.max_repodesc_len = 80;
 374         ctx.cfg.max_blob_size = 0;
 375         ctx.cfg.max_stats = 0;
 376         ctx.cfg.project_list = NULL;
 377         ctx.cfg.renamelimit = -1;
 378         ctx.cfg.remove_suffix = 0;
 379         ctx.cfg.robots = "index, nofollow";
 380         ctx.cfg.root_title = "Git repository browser";
 381         ctx.cfg.root_desc = "a fast webinterface for the git dscm";
 382         ctx.cfg.scan_hidden_path = 0;
 383         ctx.cfg.script_name = CGIT_SCRIPT_NAME;
 384         ctx.cfg.section = "";
 385         ctx.cfg.repository_sort = "name";
 386         ctx.cfg.section_sort = 1;
 387         ctx.cfg.summary_branches = 10;
 388         ctx.cfg.summary_log = 10;
 389         ctx.cfg.summary_tags = 10;
 390         ctx.cfg.max_atom_items = 10;
 391         ctx.cfg.difftype = DIFF_UNIFIED;
 392         ctx.env.cgit_config = getenv("CGIT_CONFIG");
 393         ctx.env.http_host = getenv("HTTP_HOST");
 394         ctx.env.https = getenv("HTTPS");
 395         ctx.env.no_http = getenv("NO_HTTP");
 396         ctx.env.path_info = getenv("PATH_INFO");
 397         ctx.env.query_string = getenv("QUERY_STRING");
 398         ctx.env.request_method = getenv("REQUEST_METHOD");
 399         ctx.env.script_name = getenv("SCRIPT_NAME");
 400         ctx.env.server_name = getenv("SERVER_NAME");
 401         ctx.env.server_port = getenv("SERVER_PORT");
 402         ctx.env.http_cookie = getenv("HTTP_COOKIE");
 403         ctx.env.http_referer = getenv("HTTP_REFERER");
 404         ctx.env.content_length = getenv("CONTENT_LENGTH") ? strtoul(getenv("CONTENT_LENGTH"), NULL, 10) : 0;
 405         ctx.env.authenticated = 0;
 406         ctx.page.mimetype = "text/html";
 407         ctx.page.charset = PAGE_ENCODING;
 408         ctx.page.filename = NULL;
 409         ctx.page.size = 0;
 410         ctx.page.modified = time(NULL);
 411         ctx.page.expires = ctx.page.modified;
 412         ctx.page.etag = NULL;
 413         memset(&ctx.cfg.mimetypes, 0, sizeof(struct string_list));
 414         if (ctx.env.script_name)
 415                 ctx.cfg.script_name = xstrdup(ctx.env.script_name);
 416         if (ctx.env.query_string)
 417                 ctx.qry.raw = xstrdup(ctx.env.query_string);
 418         if (!ctx.env.cgit_config)
 419                 ctx.env.cgit_config = CGIT_CONFIG;
 420 }
 421
 422 struct refmatch {
 423         char *req_ref;
 424         char *first_ref;
 425         int match;
 426 };
 427
 428 static int find_current_ref(const char *refname, const struct object_id *oid,
 429                             int flags, void *cb_data)
 430 {
 431         struct refmatch *info;
 432
 433         info = (struct refmatch *)cb_data;
 434         if (!strcmp(refname, info->req_ref))
 435                 info->match = 1;
 436         if (!info->first_ref)
 437                 info->first_ref = xstrdup(refname);
 438         return info->match;
 439 }
 440
 441 static void free_refmatch_inner(struct refmatch *info)
 442 {
 443         if (info->first_ref)
 444                 free(info->first_ref);
 445 }
 446
 447 static char *find_default_branch(struct cgit_repo *repo)
 448 {
 449         struct refmatch info;
 450         char *ref;
 451
 452         info.req_ref = repo->defbranch;
 453         info.first_ref = NULL;
 454         info.match = 0;
 455         for_each_branch_ref(find_current_ref, &info);
 456         if (info.match)
 457                 ref = info.req_ref;
 458         else
 459                 ref = info.first_ref;
 460         if (ref)
 461                 ref = xstrdup(ref);
 462         free_refmatch_inner(&info);
 463
 464         return ref;
 465 }
 466
 467 static char *guess_defbranch(void)
 468 {
 469         const char *ref;
 470         unsigned char sha1[20];
 471
 472         ref = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
 473         if (!ref || !starts_with(ref, "refs/heads/"))
 474                 return "master";
 475         return xstrdup(ref + 11);
 476 }
 477 /* The caller must free filename and ref after calling this. */
 478 static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
 479 {
 480         const char *colon;
 481
 482         *filename = NULL;
 483         *ref = NULL;
 484
 485         if (!readme || !readme[0])
 486                 return;
 487
 488         /* Check if the readme is tracked in the git repo. */
 489         colon = strchr(readme, ':');
 490         if (colon && strlen(colon) > 1) {
 491                 /* If it starts with a colon, we want to use
 492                  * the default branch */
 493                 if (colon == readme && repo->defbranch)
 494                         *ref = xstrdup(repo->defbranch);
 495                 else
 496                         *ref = xstrndup(readme, colon - readme);
 497                 readme = colon + 1;
 498         }
 499
 500         /* Prepend repo path to relative readme path unless tracked. */
 501         if (!(*ref) && readme[0] != '/')
 502                 *filename = fmtalloc("%s/%s", repo->path, readme);
 503         else
 504                 *filename = xstrdup(readme);
 505 }
 506 static void choose_readme(struct cgit_repo *repo)
 507 {
 508         int found;
 509         char *filename, *ref;
 510         struct string_list_item *entry;
 511
 512         if (!repo->readme.nr)
 513                 return;
 514
 515         found = 0;
 516         for_each_string_list_item(entry, &repo->readme) {
 517                 parse_readme(entry->string, &filename, &ref, repo);
 518                 if (!filename) {
 519                         free(filename);
 520                         free(ref);
 521                         continue;
 522                 }
 523                 if (ref) {
 524                         if (cgit_ref_path_exists(filename, ref, 1)) {
 525                                 found = 1;
 526                                 break;
 527                         }
 528                 }
 529                 else if (!access(filename, R_OK)) {
 530                         found = 1;
 531                         break;
 532                 }
 533                 free(filename);
 534                 free(ref);
 535         }
 536         repo->readme.strdup_strings = 1;
 537         string_list_clear(&repo->readme, 0);
 538         repo->readme.strdup_strings = 0;
 539         if (found)
 540                 string_list_append(&repo->readme, filename)->util = ref;
 541 }
 542
 543 static void print_no_repo_clone_urls(const char *url)
 544 {
 545         html("<tr><td><a rel='vcs-git' href='");
 546         html_url_path(url);
 547         html("' title='");
 548         html_attr(ctx.repo->name);
 549         html(" Git repository'>");
 550         html_txt(url);
 551         html("</a></td></tr>\n");
 552 }
 553
 554 static int prepare_repo_cmd(void)
 555 {
 556         unsigned char sha1[20];
 557         int nongit = 0;
 558         int rc;
 559
 560         /* The path to the git repository. */
 561         setenv("GIT_DIR", ctx.repo->path, 1);
 562
 563         /* Do not look in /etc/ for gitconfig and gitattributes. */
 564         setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
 565         setenv("GIT_ATTR_NOSYSTEM", "1", 1);
 566         unsetenv("HOME");
 567         unsetenv("XDG_CONFIG_HOME");
 568
 569         /* Setup the git directory and initialize the notes system. Both of these
 570          * load local configuration from the git repository, so we do them both while
 571          * the HOME variables are unset. */
 572         setup_git_directory_gently(&nongit);
 573         init_display_notes(NULL);
 574
 575         if (nongit) {
 576                 const char *name = ctx.repo->name;
 577                 rc = errno;
 578                 ctx.page.title = fmtalloc("%s - %s", ctx.cfg.root_title,
 579                                                 "config error");
 580                 ctx.repo = NULL;
 581                 cgit_print_http_headers();
 582                 cgit_print_docstart();
 583                 cgit_print_pageheader();
 584                 cgit_print_error("Failed to open %s: %s", name,
 585                                  rc ? strerror(rc) : "Not a valid git repository");
 586                 cgit_print_docend();
 587                 return 1;
 588         }
 589         ctx.page.title = fmtalloc("%s - %s", ctx.repo->name, ctx.repo->desc);
 590
 591         if (!ctx.repo->defbranch)
 592                 ctx.repo->defbranch = guess_defbranch();
 593
 594         if (!ctx.qry.head) {
 595                 ctx.qry.nohead = 1;
 596                 ctx.qry.head = find_default_branch(ctx.repo);
 597         }
 598
 599         if (!ctx.qry.head) {
 600                 cgit_print_http_headers();
 601                 cgit_print_docstart();
 602                 cgit_print_pageheader();
 603                 cgit_print_error("Repository seems to be empty");
 604                 if (!strcmp(ctx.qry.page, "summary")) {
 605                         html("<table class='list'><tr class='nohover'><td>&nbsp;</td></tr><tr class='nohover'><th class='left'>Clone</th></tr>\n");
 606                         cgit_prepare_repo_env(ctx.repo);
 607                         cgit_add_clone_urls(print_no_repo_clone_urls);
 608                         html("</table>\n");
 609                 }
 610                 cgit_print_docend();
 611                 return 1;
 612         }
 613
 614         if (get_sha1(ctx.qry.head, sha1)) {
 615                 char *tmp = xstrdup(ctx.qry.head);
 616                 ctx.qry.head = ctx.repo->defbranch;
 617                 cgit_print_error_page(404, "Not found",
 618                                 "Invalid branch: %s", tmp);
 619                 free(tmp);
 620                 return 1;
 621         }
 622         string_list_sort(&ctx.repo->submodules);
 623         cgit_prepare_repo_env(ctx.repo);
 624         choose_readme(ctx.repo);
 625         return 0;
 626 }
 627
 628 static inline void open_auth_filter(const char *function)
 629 {
 630         cgit_open_filter(ctx.cfg.auth_filter, function,
 631                 ctx.env.http_cookie ? ctx.env.http_cookie : "",
 632                 ctx.env.request_method ? ctx.env.request_method : "",
 633                 ctx.env.query_string ? ctx.env.query_string : "",
 634                 ctx.env.http_referer ? ctx.env.http_referer : "",
 635                 ctx.env.path_info ? ctx.env.path_info : "",
 636                 ctx.env.http_host ? ctx.env.http_host : "",
 637                 ctx.env.https ? ctx.env.https : "",
 638                 ctx.qry.repo ? ctx.qry.repo : "",
 639                 ctx.qry.page ? ctx.qry.page : "",
 640                 ctx.qry.url ? ctx.qry.url : "",
 641                 cgit_loginurl());
 642 }
 643
 644 /* We intentionally keep this rather small, instead of looping and
 645  * feeding it to the filter a couple bytes at a time. This way, the
 646  * filter itself does not need to handle any denial of service or
 647  * buffer bloat issues. If this winds up being too small, people
 648  * will complain on the mailing list, and we'll increase it as needed. */
 649 #define MAX_AUTHENTICATION_POST_BYTES 4096
 650 /* The filter is expected to spit out "Status: " and all headers. */
 651 static inline void authenticate_post(void)
 652 {
 653         char buffer[MAX_AUTHENTICATION_POST_BYTES];
 654         int len;
 655
 656         open_auth_filter("authenticate-post");
 657         len = ctx.env.content_length;
 658         if (len > MAX_AUTHENTICATION_POST_BYTES)
 659                 len = MAX_AUTHENTICATION_POST_BYTES;
 660         if (read(STDIN_FILENO, buffer, len) < 0)
 661                 die_errno("Could not read POST from stdin");
 662         if (write(STDOUT_FILENO, buffer, len) < 0)
 663                 die_errno("Could not write POST to stdout");
 664         cgit_close_filter(ctx.cfg.auth_filter);
 665         exit(0);
 666 }
 667
 668 static inline void authenticate_cookie(void)
 669 {
 670         /* If we don't have an auth_filter, consider all cookies valid, and thus return early. */
 671         if (!ctx.cfg.auth_filter) {
 672                 ctx.env.authenticated = 1;
 673                 return;
 674         }
 675
 676         /* If we're having something POST'd to /login, we're authenticating POST,
 677          * instead of the cookie, so call authenticate_post and bail out early.
 678          * This pattern here should match /?p=login with POST. */
 679         if (ctx.env.request_method && ctx.qry.page && !ctx.repo && \
 680             !strcmp(ctx.env.request_method, "POST") && !strcmp(ctx.qry.page, "login")) {
 681                 authenticate_post();
 682                 return;
 683         }
 684
 685         /* If we've made it this far, we're authenticating the cookie for real, so do that. */
 686         open_auth_filter("authenticate-cookie");
 687         ctx.env.authenticated = cgit_close_filter(ctx.cfg.auth_filter);
 688 }
 689
 690 static void process_request(void)
 691 {
 692         struct cgit_cmd *cmd;
 693
 694         /* If we're not yet authenticated, no matter what page we're on,
 695          * display the authentication body from the auth_filter. This should
 696          * never be cached. */
 697         if (!ctx.env.authenticated) {
 698                 ctx.page.title = "Authentication Required";
 699                 cgit_print_http_headers();
 700                 cgit_print_docstart();
 701                 cgit_print_pageheader();
 702                 open_auth_filter("body");
 703                 cgit_close_filter(ctx.cfg.auth_filter);
 704                 cgit_print_docend();
 705                 return;
 706         }
 707
 708         cmd = cgit_get_cmd();
 709         if (!cmd) {
 710                 ctx.page.title = "cgit error";
 711                 cgit_print_error_page(404, "Not found", "Invalid request");
 712                 return;
 713         }
 714
 715         if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
 716                 ctx.page.title = "cgit error";
 717                 cgit_print_error_page(404, "Not found", "Invalid request");
 718                 return;
 719         }
 720
 721         /* If cmd->want_vpath is set, assume ctx.qry.path contains a "virtual"
 722          * in-project path limit to be made available at ctx.qry.vpath.
 723          * Otherwise, no path limit is in effect (ctx.qry.vpath = NULL).
 724          */
 725         ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
 726
 727         if (cmd->want_repo && !ctx.repo) {
 728                 cgit_print_error_page(400, "Bad request",
 729                                 "No repository selected");
 730                 return;
 731         }
 732
 733         if (ctx.repo && prepare_repo_cmd())
 734                 return;
 735
 736         if (cmd->pre)
 737                 cmd->pre();
 738
 739         if (cmd->want_layout) {
 740                 cgit_print_http_headers();
 741                 cgit_print_docstart();
 742                 cgit_print_pageheader();
 743         }
 744
 745         cmd->fn();
 746
 747         if (cmd->want_layout)
 748                 cgit_print_docend();
 749 }
 750
 751 static int cmp_repos(const void *a, const void *b)
 752 {
 753         const struct cgit_repo *ra = a, *rb = b;
 754         return strcmp(ra->url, rb->url);
 755 }
 756
 757 static char *build_snapshot_setting(int bitmap)
 758 {
 759         const struct cgit_snapshot_format *f;
 760         struct strbuf result = STRBUF_INIT;
 761
 762         for (f = cgit_snapshot_formats; f->suffix; f++) {
 763                 if (f->bit & bitmap) {
 764                         if (result.len)
 765                                 strbuf_addch(&result, ' ');
 766                         strbuf_addstr(&result, f->suffix);
 767                 }
 768         }
 769         return strbuf_detach(&result, NULL);
 770 }
 771
 772 static char *get_first_line(char *txt)
 773 {
 774         char *t = xstrdup(txt);
 775         char *p = strchr(t, '\n');
 776         if (p)
 777                 *p = '\0';
 778         return t;
 779 }
 780
 781 static void print_repo(FILE *f, struct cgit_repo *repo)
 782 {
 783         struct string_list_item *item;
 784         fprintf(f, "repo.url=%s\n", repo->url);
 785         fprintf(f, "repo.name=%s\n", repo->name);
 786         fprintf(f, "repo.path=%s\n", repo->path);
 787         if (repo->owner)
 788                 fprintf(f, "repo.owner=%s\n", repo->owner);
 789         if (repo->desc) {
 790                 char *tmp = get_first_line(repo->desc);
 791                 fprintf(f, "repo.desc=%s\n", tmp);
 792                 free(tmp);
 793         }
 794         for_each_string_list_item(item, &repo->readme) {
 795                 if (item->util)
 796                         fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
 797                 else
 798                         fprintf(f, "repo.readme=%s\n", item->string);
 799         }
 800         if (repo->defbranch)
 801                 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
 802         if (repo->module_link)
 803                 fprintf(f, "repo.module-link=%s\n", repo->module_link);
 804         if (repo->section)
 805                 fprintf(f, "repo.section=%s\n", repo->section);
 806         if (repo->clone_url)
 807                 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
 808         fprintf(f, "repo.enable-commit-graph=%d\n",
 809                 repo->enable_commit_graph);
 810         fprintf(f, "repo.enable-log-filecount=%d\n",
 811                 repo->enable_log_filecount);
 812         fprintf(f, "repo.enable-log-linecount=%d\n",
 813                 repo->enable_log_linecount);
 814         if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
 815                 cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
 816         if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
 817                 cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
 818         if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
 819                 cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
 820         if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
 821                 cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
 822         if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
 823                 cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
 824         if (repo->snapshots != ctx.cfg.snapshots) {
 825                 char *tmp = build_snapshot_setting(repo->snapshots);
 826                 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
 827                 free(tmp);
 828         }
 829         if (repo->max_stats != ctx.cfg.max_stats)
 830                 fprintf(f, "repo.max-stats=%s\n",
 831                         cgit_find_stats_periodname(repo->max_stats));
 832         if (repo->logo)
 833                 fprintf(f, "repo.logo=%s\n", repo->logo);
 834         if (repo->logo_link)
 835                 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
 836         fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
 837         fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
 838         if (repo->branch_sort == 1)
 839                 fprintf(f, "repo.branch-sort=age\n");
 840         if (repo->commit_sort) {
 841                 if (repo->commit_sort == 1)
 842                         fprintf(f, "repo.commit-sort=date\n");
 843                 else if (repo->commit_sort == 2)
 844                         fprintf(f, "repo.commit-sort=topo\n");
 845         }
 846         fprintf(f, "repo.hide=%d\n", repo->hide);
 847         fprintf(f, "repo.ignore=%d\n", repo->ignore);
 848         fprintf(f, "\n");
 849 }
 850
 851 static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
 852 {
 853         int i;
 854
 855         for (i = start; i < list->count; i++)
 856                 print_repo(f, &list->repos[i]);
 857 }
 858
 859 /* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
 860  * and return 0 on success.
 861  */
 862 static int generate_cached_repolist(const char *path, const char *cached_rc)
 863 {
 864         struct strbuf locked_rc = STRBUF_INIT;
 865         int result = 0;
 866         int idx;
 867         FILE *f;
 868
 869         strbuf_addf(&locked_rc, "%s.lock", cached_rc);
 870         f = fopen(locked_rc.buf, "wx");
 871         if (!f) {
 872                 /* Inform about the error unless the lockfile already existed,
 873                  * since that only means we've got concurrent requests.
 874                  */
 875                 result = errno;
 876                 if (result != EEXIST)
 877                         fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
 878                                 locked_rc.buf, strerror(result), result);
 879                 goto out;
 880         }
 881         idx = cgit_repolist.count;
 882         if (ctx.cfg.project_list)
 883                 scan_projects(path, ctx.cfg.project_list, repo_config);
 884         else
 885                 scan_tree(path, repo_config);
 886         print_repolist(f, &cgit_repolist, idx);
 887         if (rename(locked_rc.buf, cached_rc))
 888                 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
 889                         locked_rc.buf, cached_rc, strerror(errno), errno);
 890         fclose(f);
 891 out:
 892         strbuf_release(&locked_rc);
 893         return result;
 894 }
 895
 896 static void process_cached_repolist(const char *path)
 897 {
 898         struct stat st;
 899         struct strbuf cached_rc = STRBUF_INIT;
 900         time_t age;
 901         unsigned long hash;
 902
 903         hash = hash_str(path);
 904         if (ctx.cfg.project_list)
 905                 hash += hash_str(ctx.cfg.project_list);
 906         strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
 907
 908         if (stat(cached_rc.buf, &st)) {
 909                 /* Nothing is cached, we need to scan without forking. And
 910                  * if we fail to generate a cached repolist, we need to
 911                  * invoke scan_tree manually.
 912                  */
 913                 if (generate_cached_repolist(path, cached_rc.buf)) {
 914                         if (ctx.cfg.project_list)
 915                                 scan_projects(path, ctx.cfg.project_list,
 916                                               repo_config);
 917                         else
 918                                 scan_tree(path, repo_config);
 919                 }
 920                 goto out;
 921         }
 922
 923         parse_configfile(cached_rc.buf, config_cb);
 924
 925         /* If the cached configfile hasn't expired, lets exit now */
 926         age = time(NULL) - st.st_mtime;
 927         if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
 928                 goto out;
 929
 930         /* The cached repolist has been parsed, but it was old. So lets
 931          * rescan the specified path and generate a new cached repolist
 932          * in a child-process to avoid latency for the current request.
 933          */
 934         if (fork())
 935                 goto out;
 936
 937         exit(generate_cached_repolist(path, cached_rc.buf));
 938 out:
 939         strbuf_release(&cached_rc);
 940 }
 941
 942 static void cgit_parse_args(int argc, const char **argv)
 943 {
 944         int i;
 945         int scan = 0;
 946
 947         for (i = 1; i < argc; i++) {
 948                 if (!strcmp(argv[i], "--version")) {
 949                         printf("CGit %s | http://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
 950 #ifdef NO_LUA
 951                         printf("[-] ");
 952 #else
 953                         printf("[+] ");
 954 #endif
 955                         printf("Lua scripting\n");
 956 #ifndef HAVE_LINUX_SENDFILE
 957                         printf("[-] ");
 958 #else
 959                         printf("[+] ");
 960 #endif
 961                         printf("Linux sendfile() usage\n");
 962
 963                         exit(0);
 964                 }
 965                 if (starts_with(argv[i], "--cache=")) {
 966                         ctx.cfg.cache_root = xstrdup(argv[i] + 8);
 967                 } else if (!strcmp(argv[i], "--nocache")) {
 968                         ctx.cfg.nocache = 1;
 969                 } else if (!strcmp(argv[i], "--nohttp")) {
 970                         ctx.env.no_http = "1";
 971                 } else if (starts_with(argv[i], "--query=")) {
 972                         ctx.qry.raw = xstrdup(argv[i] + 8);
 973                 } else if (starts_with(argv[i], "--repo=")) {
 974                         ctx.qry.repo = xstrdup(argv[i] + 7);
 975                 } else if (starts_with(argv[i], "--page=")) {
 976                         ctx.qry.page = xstrdup(argv[i] + 7);
 977                 } else if (starts_with(argv[i], "--head=")) {
 978                         ctx.qry.head = xstrdup(argv[i] + 7);
 979                         ctx.qry.has_symref = 1;
 980                 } else if (starts_with(argv[i], "--sha1=")) {
 981                         ctx.qry.sha1 = xstrdup(argv[i] + 7);
 982                         ctx.qry.has_sha1 = 1;
 983                 } else if (starts_with(argv[i], "--ofs=")) {
 984                         ctx.qry.ofs = atoi(argv[i] + 6);
 985                 } else if (starts_with(argv[i], "--scan-tree=") ||
 986                            starts_with(argv[i], "--scan-path=")) {
 987                         /*
 988                          * HACK: The global snapshot bit mask defines the set
 989                          * of allowed snapshot formats, but the config file
 990                          * hasn't been parsed yet so the mask is currently 0.
 991                          * By setting all bits high before scanning we make
 992                          * sure that any in-repo cgitrc snapshot setting is
 993                          * respected by scan_tree().
 994                          *
 995                          * NOTE: We assume that there aren't more than 8
 996                          * different snapshot formats supported by cgit...
 997                          */
 998                         ctx.cfg.snapshots = 0xFF;
 999                         scan++;
1000                         scan_tree(argv[i] + 12, repo_config);
1001                 }
1002         }
1003         if (scan) {
1004                 qsort(cgit_repolist.repos, cgit_repolist.count,
1005                         sizeof(struct cgit_repo), cmp_repos);
1006                 print_repolist(stdout, &cgit_repolist, 0);
1007                 exit(0);
1008         }
1009 }
1010
1011 static int calc_ttl(void)
1012 {
1013         if (!ctx.repo)
1014                 return ctx.cfg.cache_root_ttl;
1015
1016         if (!ctx.qry.page)
1017                 return ctx.cfg.cache_repo_ttl;
1018
1019         if (!strcmp(ctx.qry.page, "about"))
1020                 return ctx.cfg.cache_about_ttl;
1021
1022         if (!strcmp(ctx.qry.page, "snapshot"))
1023                 return ctx.cfg.cache_snapshot_ttl;
1024
1025         if (ctx.qry.has_sha1)
1026                 return ctx.cfg.cache_static_ttl;
1027
1028         if (ctx.qry.has_symref)
1029                 return ctx.cfg.cache_dynamic_ttl;
1030
1031         return ctx.cfg.cache_repo_ttl;
1032 }
1033
1034 int main(int argc, const char **argv)
1035 {
1036         const char *path;
1037         int err, ttl;
1038
1039         cgit_init_filters();
1040         atexit(cgit_cleanup_filters);
1041
1042         prepare_context();
1043         cgit_repolist.length = 0;
1044         cgit_repolist.count = 0;
1045         cgit_repolist.repos = NULL;
1046
1047         cgit_parse_args(argc, argv);
1048         parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
1049         ctx.repo = NULL;
1050         http_parse_querystring(ctx.qry.raw, querystring_cb);
1051
1052         /* If virtual-root isn't specified in cgitrc, lets pretend
1053          * that virtual-root equals SCRIPT_NAME, minus any possibly
1054          * trailing slashes.
1055          */
1056         if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
1057                 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
1058
1059         /* If no url parameter is specified on the querystring, lets
1060          * use PATH_INFO as url. This allows cgit to work with virtual
1061          * urls without the need for rewriterules in the webserver (as
1062          * long as PATH_INFO is included in the cache lookup key).
1063          */
1064         path = ctx.env.path_info;
1065         if (!ctx.qry.url && path) {
1066                 if (path[0] == '/')
1067                         path++;
1068                 ctx.qry.url = xstrdup(path);
1069                 if (ctx.qry.raw) {
1070                         char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
1071                         free(ctx.qry.raw);
1072                         ctx.qry.raw = newqry;
1073                 } else
1074                         ctx.qry.raw = xstrdup(ctx.qry.url);
1075                 cgit_parse_url(ctx.qry.url);
1076         }
1077
1078         /* Before we go any further, we set ctx.env.authenticated by checking to see
1079          * if the supplied cookie is valid. All cookies are valid if there is no
1080          * auth_filter. If there is an auth_filter, the filter decides. */
1081         authenticate_cookie();
1082
1083         ttl = calc_ttl();
1084         if (ttl < 0)
1085                 ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
1086         else
1087                 ctx.page.expires += ttl * 60;
1088         if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
1089                 ctx.cfg.nocache = 1;
1090         if (ctx.cfg.nocache)
1091                 ctx.cfg.cache_size = 0;
1092         err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
1093                             ctx.qry.raw, ttl, process_request);
1094         cgit_cleanup_filters();
1095         if (err)
1096                 cgit_print_error("Error processing page: %s (%d)",
1097                                  strerror(err), err);
1098         return err;
1099 }