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         unsigned char sha1[20];
 475
 476         ref = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
 477         if (!ref || !starts_with(ref, "refs/heads/"))
 478                 return "master";
 479         return xstrdup(ref + 11);
 480 }
 481 /* The caller must free filename and ref after calling this. */
 482 static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
 483 {
 484         const char *colon;
 485
 486         *filename = NULL;
 487         *ref = NULL;
 488
 489         if (!readme || !readme[0])
 490                 return;
 491
 492         /* Check if the readme is tracked in the git repo. */
 493         colon = strchr(readme, ':');
 494         if (colon && strlen(colon) > 1) {
 495                 /* If it starts with a colon, we want to use
 496                  * the default branch */
 497                 if (colon == readme && repo->defbranch)
 498                         *ref = xstrdup(repo->defbranch);
 499                 else
 500                         *ref = xstrndup(readme, colon - readme);
 501                 readme = colon + 1;
 502         }
 503
 504         /* Prepend repo path to relative readme path unless tracked. */
 505         if (!(*ref) && readme[0] != '/')
 506                 *filename = fmtalloc("%s/%s", repo->path, readme);
 507         else
 508                 *filename = xstrdup(readme);
 509 }
 510 static void choose_readme(struct cgit_repo *repo)
 511 {
 512         int found;
 513         char *filename, *ref;
 514         struct string_list_item *entry;
 515
 516         if (!repo->readme.nr)
 517                 return;
 518
 519         found = 0;
 520         for_each_string_list_item(entry, &repo->readme) {
 521                 parse_readme(entry->string, &filename, &ref, repo);
 522                 if (!filename) {
 523                         free(filename);
 524                         free(ref);
 525                         continue;
 526                 }
 527                 if (ref) {
 528                         if (cgit_ref_path_exists(filename, ref, 1)) {
 529                                 found = 1;
 530                                 break;
 531                         }
 532                 }
 533                 else if (!access(filename, R_OK)) {
 534                         found = 1;
 535                         break;
 536                 }
 537                 free(filename);
 538                 free(ref);
 539         }
 540         repo->readme.strdup_strings = 1;
 541         string_list_clear(&repo->readme, 0);
 542         repo->readme.strdup_strings = 0;
 543         if (found)
 544                 string_list_append(&repo->readme, filename)->util = ref;
 545 }
 546
 547 static void print_no_repo_clone_urls(const char *url)
 548 {
 549         html("<tr><td><a rel='vcs-git' href='");
 550         html_url_path(url);
 551         html("' title='");
 552         html_attr(ctx.repo->name);
 553         html(" Git repository'>");
 554         html_txt(url);
 555         html("</a></td></tr>\n");
 556 }
 557
 558 static int prepare_repo_cmd(void)
 559 {
 560         unsigned char sha1[20];
 561         int nongit = 0;
 562         int rc;
 563
 564         /* The path to the git repository. */
 565         setenv("GIT_DIR", ctx.repo->path, 1);
 566
 567         /* Do not look in /etc/ for gitconfig and gitattributes. */
 568         setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
 569         setenv("GIT_ATTR_NOSYSTEM", "1", 1);
 570         unsetenv("HOME");
 571         unsetenv("XDG_CONFIG_HOME");
 572
 573         /* Setup the git directory and initialize the notes system. Both of these
 574          * load local configuration from the git repository, so we do them both while
 575          * the HOME variables are unset. */
 576         setup_git_directory_gently(&nongit);
 577         init_display_notes(NULL);
 578
 579         if (nongit) {
 580                 const char *name = ctx.repo->name;
 581                 rc = errno;
 582                 ctx.page.title = fmtalloc("%s - %s", ctx.cfg.root_title,
 583                                                 "config error");
 584                 ctx.repo = NULL;
 585                 cgit_print_http_headers();
 586                 cgit_print_docstart();
 587                 cgit_print_pageheader();
 588                 cgit_print_error("Failed to open %s: %s", name,
 589                                  rc ? strerror(rc) : "Not a valid git repository");
 590                 cgit_print_docend();
 591                 return 1;
 592         }
 593         ctx.page.title = fmtalloc("%s - %s", ctx.repo->name, ctx.repo->desc);
 594
 595         if (!ctx.repo->defbranch)
 596                 ctx.repo->defbranch = guess_defbranch();
 597
 598         if (!ctx.qry.head) {
 599                 ctx.qry.nohead = 1;
 600                 ctx.qry.head = find_default_branch(ctx.repo);
 601         }
 602
 603         if (!ctx.qry.head) {
 604                 cgit_print_http_headers();
 605                 cgit_print_docstart();
 606                 cgit_print_pageheader();
 607                 cgit_print_error("Repository seems to be empty");
 608                 if (!strcmp(ctx.qry.page, "summary")) {
 609                         html("<table class='list'><tr class='nohover'><td>&nbsp;</td></tr><tr class='nohover'><th class='left'>Clone</th></tr>\n");
 610                         cgit_prepare_repo_env(ctx.repo);
 611                         cgit_add_clone_urls(print_no_repo_clone_urls);
 612                         html("</table>\n");
 613                 }
 614                 cgit_print_docend();
 615                 return 1;
 616         }
 617
 618         if (get_sha1(ctx.qry.head, sha1)) {
 619                 char *old_head = ctx.qry.head;
 620                 ctx.qry.head = xstrdup(ctx.repo->defbranch);
 621                 cgit_print_error_page(404, "Not found",
 622                                 "Invalid branch: %s", old_head);
 623                 free(old_head);
 624                 return 1;
 625         }
 626         string_list_sort(&ctx.repo->submodules);
 627         cgit_prepare_repo_env(ctx.repo);
 628         choose_readme(ctx.repo);
 629         return 0;
 630 }
 631
 632 static inline void open_auth_filter(const char *function)
 633 {
 634         cgit_open_filter(ctx.cfg.auth_filter, function,
 635                 ctx.env.http_cookie ? ctx.env.http_cookie : "",
 636                 ctx.env.request_method ? ctx.env.request_method : "",
 637                 ctx.env.query_string ? ctx.env.query_string : "",
 638                 ctx.env.http_referer ? ctx.env.http_referer : "",
 639                 ctx.env.path_info ? ctx.env.path_info : "",
 640                 ctx.env.http_host ? ctx.env.http_host : "",
 641                 ctx.env.https ? ctx.env.https : "",
 642                 ctx.qry.repo ? ctx.qry.repo : "",
 643                 ctx.qry.page ? ctx.qry.page : "",
 644                 ctx.qry.url ? ctx.qry.url : "",
 645                 cgit_loginurl());
 646 }
 647
 648 /* We intentionally keep this rather small, instead of looping and
 649  * feeding it to the filter a couple bytes at a time. This way, the
 650  * filter itself does not need to handle any denial of service or
 651  * buffer bloat issues. If this winds up being too small, people
 652  * will complain on the mailing list, and we'll increase it as needed. */
 653 #define MAX_AUTHENTICATION_POST_BYTES 4096
 654 /* The filter is expected to spit out "Status: " and all headers. */
 655 static inline void authenticate_post(void)
 656 {
 657         char buffer[MAX_AUTHENTICATION_POST_BYTES];
 658         unsigned int len;
 659
 660         open_auth_filter("authenticate-post");
 661         len = ctx.env.content_length;
 662         if (len > MAX_AUTHENTICATION_POST_BYTES)
 663                 len = MAX_AUTHENTICATION_POST_BYTES;
 664         if (read(STDIN_FILENO, buffer, len) < 0)
 665                 die_errno("Could not read POST from stdin");
 666         if (write(STDOUT_FILENO, buffer, len) < 0)
 667                 die_errno("Could not write POST to stdout");
 668         cgit_close_filter(ctx.cfg.auth_filter);
 669         exit(0);
 670 }
 671
 672 static inline void authenticate_cookie(void)
 673 {
 674         /* If we don't have an auth_filter, consider all cookies valid, and thus return early. */
 675         if (!ctx.cfg.auth_filter) {
 676                 ctx.env.authenticated = 1;
 677                 return;
 678         }
 679
 680         /* If we're having something POST'd to /login, we're authenticating POST,
 681          * instead of the cookie, so call authenticate_post and bail out early.
 682          * This pattern here should match /?p=login with POST. */
 683         if (ctx.env.request_method && ctx.qry.page && !ctx.repo && \
 684             !strcmp(ctx.env.request_method, "POST") && !strcmp(ctx.qry.page, "login")) {
 685                 authenticate_post();
 686                 return;
 687         }
 688
 689         /* If we've made it this far, we're authenticating the cookie for real, so do that. */
 690         open_auth_filter("authenticate-cookie");
 691         ctx.env.authenticated = cgit_close_filter(ctx.cfg.auth_filter);
 692 }
 693
 694 static void process_request(void)
 695 {
 696         struct cgit_cmd *cmd;
 697
 698         /* If we're not yet authenticated, no matter what page we're on,
 699          * display the authentication body from the auth_filter. This should
 700          * never be cached. */
 701         if (!ctx.env.authenticated) {
 702                 ctx.page.title = "Authentication Required";
 703                 cgit_print_http_headers();
 704                 cgit_print_docstart();
 705                 cgit_print_pageheader();
 706                 open_auth_filter("body");
 707                 cgit_close_filter(ctx.cfg.auth_filter);
 708                 cgit_print_docend();
 709                 return;
 710         }
 711
 712         cmd = cgit_get_cmd();
 713         if (!cmd) {
 714                 ctx.page.title = "cgit error";
 715                 cgit_print_error_page(404, "Not found", "Invalid request");
 716                 return;
 717         }
 718
 719         if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
 720                 ctx.page.title = "cgit error";
 721                 cgit_print_error_page(404, "Not found", "Invalid request");
 722                 return;
 723         }
 724
 725         /* If cmd->want_vpath is set, assume ctx.qry.path contains a "virtual"
 726          * in-project path limit to be made available at ctx.qry.vpath.
 727          * Otherwise, no path limit is in effect (ctx.qry.vpath = NULL).
 728          */
 729         ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
 730
 731         if (cmd->want_repo && !ctx.repo) {
 732                 cgit_print_error_page(400, "Bad request",
 733                                 "No repository selected");
 734                 return;
 735         }
 736
 737         if (ctx.repo && prepare_repo_cmd())
 738                 return;
 739
 740         cmd->fn();
 741 }
 742
 743 static int cmp_repos(const void *a, const void *b)
 744 {
 745         const struct cgit_repo *ra = a, *rb = b;
 746         return strcmp(ra->url, rb->url);
 747 }
 748
 749 static char *build_snapshot_setting(int bitmap)
 750 {
 751         const struct cgit_snapshot_format *f;
 752         struct strbuf result = STRBUF_INIT;
 753
 754         for (f = cgit_snapshot_formats; f->suffix; f++) {
 755                 if (f->bit & bitmap) {
 756                         if (result.len)
 757                                 strbuf_addch(&result, ' ');
 758                         strbuf_addstr(&result, f->suffix);
 759                 }
 760         }
 761         return strbuf_detach(&result, NULL);
 762 }
 763
 764 static char *get_first_line(char *txt)
 765 {
 766         char *t = xstrdup(txt);
 767         char *p = strchr(t, '\n');
 768         if (p)
 769                 *p = '\0';
 770         return t;
 771 }
 772
 773 static void print_repo(FILE *f, struct cgit_repo *repo)
 774 {
 775         struct string_list_item *item;
 776         fprintf(f, "repo.url=%s\n", repo->url);
 777         fprintf(f, "repo.name=%s\n", repo->name);
 778         fprintf(f, "repo.path=%s\n", repo->path);
 779         if (repo->owner)
 780                 fprintf(f, "repo.owner=%s\n", repo->owner);
 781         if (repo->desc) {
 782                 char *tmp = get_first_line(repo->desc);
 783                 fprintf(f, "repo.desc=%s\n", tmp);
 784                 free(tmp);
 785         }
 786         for_each_string_list_item(item, &repo->readme) {
 787                 if (item->util)
 788                         fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
 789                 else
 790                         fprintf(f, "repo.readme=%s\n", item->string);
 791         }
 792         if (repo->defbranch)
 793                 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
 794         if (repo->module_link)
 795                 fprintf(f, "repo.module-link=%s\n", repo->module_link);
 796         if (repo->section)
 797                 fprintf(f, "repo.section=%s\n", repo->section);
 798         if (repo->homepage)
 799                 fprintf(f, "repo.homepage=%s\n", repo->homepage);
 800         if (repo->clone_url)
 801                 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
 802         fprintf(f, "repo.enable-commit-graph=%d\n",
 803                 repo->enable_commit_graph);
 804         fprintf(f, "repo.enable-log-filecount=%d\n",
 805                 repo->enable_log_filecount);
 806         fprintf(f, "repo.enable-log-linecount=%d\n",
 807                 repo->enable_log_linecount);
 808         if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
 809                 cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
 810         if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
 811                 cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
 812         if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
 813                 cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
 814         if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
 815                 cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
 816         if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
 817                 cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
 818         if (repo->snapshots != ctx.cfg.snapshots) {
 819                 char *tmp = build_snapshot_setting(repo->snapshots);
 820                 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
 821                 free(tmp);
 822         }
 823         if (repo->max_stats != ctx.cfg.max_stats)
 824                 fprintf(f, "repo.max-stats=%s\n",
 825                         cgit_find_stats_periodname(repo->max_stats));
 826         if (repo->logo)
 827                 fprintf(f, "repo.logo=%s\n", repo->logo);
 828         if (repo->logo_link)
 829                 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
 830         fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
 831         fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
 832         fprintf(f, "repo.enable-html-serving=%d\n", repo->enable_html_serving);
 833         if (repo->branch_sort == 1)
 834                 fprintf(f, "repo.branch-sort=age\n");
 835         if (repo->commit_sort) {
 836                 if (repo->commit_sort == 1)
 837                         fprintf(f, "repo.commit-sort=date\n");
 838                 else if (repo->commit_sort == 2)
 839                         fprintf(f, "repo.commit-sort=topo\n");
 840         }
 841         fprintf(f, "repo.hide=%d\n", repo->hide);
 842         fprintf(f, "repo.ignore=%d\n", repo->ignore);
 843         fprintf(f, "\n");
 844 }
 845
 846 static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
 847 {
 848         int i;
 849
 850         for (i = start; i < list->count; i++)
 851                 print_repo(f, &list->repos[i]);
 852 }
 853
 854 /* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
 855  * and return 0 on success.
 856  */
 857 static int generate_cached_repolist(const char *path, const char *cached_rc)
 858 {
 859         struct strbuf locked_rc = STRBUF_INIT;
 860         int result = 0;
 861         int idx;
 862         FILE *f;
 863
 864         strbuf_addf(&locked_rc, "%s.lock", cached_rc);
 865         f = fopen(locked_rc.buf, "wx");
 866         if (!f) {
 867                 /* Inform about the error unless the lockfile already existed,
 868                  * since that only means we've got concurrent requests.
 869                  */
 870                 result = errno;
 871                 if (result != EEXIST)
 872                         fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
 873                                 locked_rc.buf, strerror(result), result);
 874                 goto out;
 875         }
 876         idx = cgit_repolist.count;
 877         if (ctx.cfg.project_list)
 878                 scan_projects(path, ctx.cfg.project_list, repo_config);
 879         else
 880                 scan_tree(path, repo_config);
 881         print_repolist(f, &cgit_repolist, idx);
 882         if (rename(locked_rc.buf, cached_rc))
 883                 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
 884                         locked_rc.buf, cached_rc, strerror(errno), errno);
 885         fclose(f);
 886 out:
 887         strbuf_release(&locked_rc);
 888         return result;
 889 }
 890
 891 static void process_cached_repolist(const char *path)
 892 {
 893         struct stat st;
 894         struct strbuf cached_rc = STRBUF_INIT;
 895         time_t age;
 896         unsigned long hash;
 897
 898         hash = hash_str(path);
 899         if (ctx.cfg.project_list)
 900                 hash += hash_str(ctx.cfg.project_list);
 901         strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
 902
 903         if (stat(cached_rc.buf, &st)) {
 904                 /* Nothing is cached, we need to scan without forking. And
 905                  * if we fail to generate a cached repolist, we need to
 906                  * invoke scan_tree manually.
 907                  */
 908                 if (generate_cached_repolist(path, cached_rc.buf)) {
 909                         if (ctx.cfg.project_list)
 910                                 scan_projects(path, ctx.cfg.project_list,
 911                                               repo_config);
 912                         else
 913                                 scan_tree(path, repo_config);
 914                 }
 915                 goto out;
 916         }
 917
 918         parse_configfile(cached_rc.buf, config_cb);
 919
 920         /* If the cached configfile hasn't expired, lets exit now */
 921         age = time(NULL) - st.st_mtime;
 922         if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
 923                 goto out;
 924
 925         /* The cached repolist has been parsed, but it was old. So lets
 926          * rescan the specified path and generate a new cached repolist
 927          * in a child-process to avoid latency for the current request.
 928          */
 929         if (fork())
 930                 goto out;
 931
 932         exit(generate_cached_repolist(path, cached_rc.buf));
 933 out:
 934         strbuf_release(&cached_rc);
 935 }
 936
 937 static void cgit_parse_args(int argc, const char **argv)
 938 {
 939         int i;
 940         int scan = 0;
 941
 942         for (i = 1; i < argc; i++) {
 943                 if (!strcmp(argv[i], "--version")) {
 944                         printf("CGit %s | https://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
 945 #ifdef NO_LUA
 946                         printf("[-] ");
 947 #else
 948                         printf("[+] ");
 949 #endif
 950                         printf("Lua scripting\n");
 951 #ifndef HAVE_LINUX_SENDFILE
 952                         printf("[-] ");
 953 #else
 954                         printf("[+] ");
 955 #endif
 956                         printf("Linux sendfile() usage\n");
 957
 958                         exit(0);
 959                 }
 960                 if (starts_with(argv[i], "--cache=")) {
 961                         ctx.cfg.cache_root = xstrdup(argv[i] + 8);
 962                 } else if (!strcmp(argv[i], "--nocache")) {
 963                         ctx.cfg.nocache = 1;
 964                 } else if (!strcmp(argv[i], "--nohttp")) {
 965                         ctx.env.no_http = "1";
 966                 } else if (starts_with(argv[i], "--query=")) {
 967                         ctx.qry.raw = xstrdup(argv[i] + 8);
 968                 } else if (starts_with(argv[i], "--repo=")) {
 969                         ctx.qry.repo = xstrdup(argv[i] + 7);
 970                 } else if (starts_with(argv[i], "--page=")) {
 971                         ctx.qry.page = xstrdup(argv[i] + 7);
 972                 } else if (starts_with(argv[i], "--head=")) {
 973                         ctx.qry.head = xstrdup(argv[i] + 7);
 974                         ctx.qry.has_symref = 1;
 975                 } else if (starts_with(argv[i], "--sha1=")) {
 976                         ctx.qry.sha1 = xstrdup(argv[i] + 7);
 977                         ctx.qry.has_sha1 = 1;
 978                 } else if (starts_with(argv[i], "--ofs=")) {
 979                         ctx.qry.ofs = atoi(argv[i] + 6);
 980                 } else if (starts_with(argv[i], "--scan-tree=") ||
 981                            starts_with(argv[i], "--scan-path=")) {
 982                         /*
 983                          * HACK: The global snapshot bit mask defines the set
 984                          * of allowed snapshot formats, but the config file
 985                          * hasn't been parsed yet so the mask is currently 0.
 986                          * By setting all bits high before scanning we make
 987                          * sure that any in-repo cgitrc snapshot setting is
 988                          * respected by scan_tree().
 989                          *
 990                          * NOTE: We assume that there aren't more than 8
 991                          * different snapshot formats supported by cgit...
 992                          */
 993                         ctx.cfg.snapshots = 0xFF;
 994                         scan++;
 995                         scan_tree(argv[i] + 12, repo_config);
 996                 }
 997         }
 998         if (scan) {
 999                 qsort(cgit_repolist.repos, cgit_repolist.count,
1000                         sizeof(struct cgit_repo), cmp_repos);
1001                 print_repolist(stdout, &cgit_repolist, 0);
1002                 exit(0);
1003         }
1004 }
1005
1006 static int calc_ttl(void)
1007 {
1008         if (!ctx.repo)
1009                 return ctx.cfg.cache_root_ttl;
1010
1011         if (!ctx.qry.page)
1012                 return ctx.cfg.cache_repo_ttl;
1013
1014         if (!strcmp(ctx.qry.page, "about"))
1015                 return ctx.cfg.cache_about_ttl;
1016
1017         if (!strcmp(ctx.qry.page, "snapshot"))
1018                 return ctx.cfg.cache_snapshot_ttl;
1019
1020         if (ctx.qry.has_sha1)
1021                 return ctx.cfg.cache_static_ttl;
1022
1023         if (ctx.qry.has_symref)
1024                 return ctx.cfg.cache_dynamic_ttl;
1025
1026         return ctx.cfg.cache_repo_ttl;
1027 }
1028
1029 int main(int argc, const char **argv)
1030 {
1031         const char *path;
1032         int err, ttl;
1033
1034         cgit_init_filters();
1035         atexit(cgit_cleanup_filters);
1036
1037         prepare_context();
1038         cgit_repolist.length = 0;
1039         cgit_repolist.count = 0;
1040         cgit_repolist.repos = NULL;
1041
1042         cgit_parse_args(argc, argv);
1043         parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
1044         ctx.repo = NULL;
1045         http_parse_querystring(ctx.qry.raw, querystring_cb);
1046
1047         /* If virtual-root isn't specified in cgitrc, lets pretend
1048          * that virtual-root equals SCRIPT_NAME, minus any possibly
1049          * trailing slashes.
1050          */
1051         if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
1052                 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
1053
1054         /* If no url parameter is specified on the querystring, lets
1055          * use PATH_INFO as url. This allows cgit to work with virtual
1056          * urls without the need for rewriterules in the webserver (as
1057          * long as PATH_INFO is included in the cache lookup key).
1058          */
1059         path = ctx.env.path_info;
1060         if (!ctx.qry.url && path) {
1061                 if (path[0] == '/')
1062                         path++;
1063                 ctx.qry.url = xstrdup(path);
1064                 if (ctx.qry.raw) {
1065                         char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
1066                         free(ctx.qry.raw);
1067                         ctx.qry.raw = newqry;
1068                 } else
1069                         ctx.qry.raw = xstrdup(ctx.qry.url);
1070                 cgit_parse_url(ctx.qry.url);
1071         }
1072
1073         /* Before we go any further, we set ctx.env.authenticated by checking to see
1074          * if the supplied cookie is valid. All cookies are valid if there is no
1075          * auth_filter. If there is an auth_filter, the filter decides. */
1076         authenticate_cookie();
1077
1078         ttl = calc_ttl();
1079         if (ttl < 0)
1080                 ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
1081         else
1082                 ctx.page.expires += ttl * 60;
1083         if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
1084                 ctx.cfg.nocache = 1;
1085         if (ctx.cfg.nocache)
1086                 ctx.cfg.cache_size = 0;
1087         err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
1088                             ctx.qry.raw, ttl, process_request);
1089         cgit_cleanup_filters();
1090         if (err)
1091                 cgit_print_error("Error processing page: %s (%d)",
1092                                  strerror(err), err);
1093         return err;
1094 }