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