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-rw-r--r--cgit.c1112
1 files changed, 1112 insertions, 0 deletions
diff --git a/cgit.c b/cgit.c
new file mode 100644
index 0000000..08d81a1
--- /dev/null
+++ b/cgit.c
@@ -0,0 +1,1112 @@
+/* cgit.c: cgi for the git scm
+ *
+ * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ * (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "cache.h"
+#include "cmd.h"
+#include "configfile.h"
+#include "html.h"
+#include "ui-shared.h"
+#include "ui-stats.h"
+#include "ui-blob.h"
+#include "ui-summary.h"
+#include "scan-tree.h"
+
+const char *cgit_version = CGIT_VERSION;
+
+__attribute__((constructor))
+static void constructor_environment()
+{
+ /* Do not look in /etc/ for gitconfig and gitattributes. */
+ setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
+ setenv("GIT_ATTR_NOSYSTEM", "1", 1);
+ unsetenv("HOME");
+ unsetenv("XDG_CONFIG_HOME");
+}
+
+static void add_mimetype(const char *name, const char *value)
+{
+ struct string_list_item *item;
+
+ item = string_list_insert(&ctx.cfg.mimetypes, name);
+ item->util = xstrdup(value);
+}
+
+static void process_cached_repolist(const char *path);
+
+static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
+{
+ const char *path;
+ struct string_list_item *item;
+
+ if (!strcmp(name, "name"))
+ repo->name = xstrdup(value);
+ else if (!strcmp(name, "clone-url"))
+ repo->clone_url = xstrdup(value);
+ else if (!strcmp(name, "desc"))
+ repo->desc = xstrdup(value);
+ else if (!strcmp(name, "owner"))
+ repo->owner = xstrdup(value);
+ else if (!strcmp(name, "homepage"))
+ repo->homepage = xstrdup(value);
+ else if (!strcmp(name, "defbranch"))
+ repo->defbranch = xstrdup(value);
+ else if (!strcmp(name, "extra-head-content"))
+ repo->extra_head_content = xstrdup(value);
+ else if (!strcmp(name, "snapshots"))
+ repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
+ else if (!strcmp(name, "enable-blame"))
+ repo->enable_blame = atoi(value);
+ else if (!strcmp(name, "enable-commit-graph"))
+ repo->enable_commit_graph = atoi(value);
+ else if (!strcmp(name, "enable-log-filecount"))
+ repo->enable_log_filecount = atoi(value);
+ else if (!strcmp(name, "enable-log-linecount"))
+ repo->enable_log_linecount = atoi(value);
+ else if (!strcmp(name, "enable-remote-branches"))
+ repo->enable_remote_branches = atoi(value);
+ else if (!strcmp(name, "enable-subject-links"))
+ repo->enable_subject_links = atoi(value);
+ else if (!strcmp(name, "enable-html-serving"))
+ repo->enable_html_serving = atoi(value);
+ else if (!strcmp(name, "branch-sort")) {
+ if (!strcmp(value, "age"))
+ repo->branch_sort = 1;
+ if (!strcmp(value, "name"))
+ repo->branch_sort = 0;
+ } else if (!strcmp(name, "commit-sort")) {
+ if (!strcmp(value, "date"))
+ repo->commit_sort = 1;
+ if (!strcmp(value, "topo"))
+ repo->commit_sort = 2;
+ } else if (!strcmp(name, "max-stats"))
+ repo->max_stats = cgit_find_stats_period(value, NULL);
+ else if (!strcmp(name, "module-link"))
+ repo->module_link= xstrdup(value);
+ else if (skip_prefix(name, "module-link.", &path)) {
+ item = string_list_append(&repo->submodules, xstrdup(path));
+ item->util = xstrdup(value);
+ } else if (!strcmp(name, "section"))
+ repo->section = xstrdup(value);
+ else if (!strcmp(name, "snapshot-prefix"))
+ repo->snapshot_prefix = xstrdup(value);
+ else if (!strcmp(name, "readme") && value != NULL) {
+ if (repo->readme.items == ctx.cfg.readme.items)
+ memset(&repo->readme, 0, sizeof(repo->readme));
+ string_list_append(&repo->readme, xstrdup(value));
+ } else if (!strcmp(name, "logo") && value != NULL)
+ repo->logo = xstrdup(value);
+ else if (!strcmp(name, "logo-link") && value != NULL)
+ repo->logo_link = xstrdup(value);
+ else if (!strcmp(name, "hide"))
+ repo->hide = atoi(value);
+ else if (!strcmp(name, "ignore"))
+ repo->ignore = atoi(value);
+ else if (ctx.cfg.enable_filter_overrides) {
+ if (!strcmp(name, "about-filter"))
+ repo->about_filter = cgit_new_filter(value, ABOUT);
+ else if (!strcmp(name, "commit-filter"))
+ repo->commit_filter = cgit_new_filter(value, COMMIT);
+ else if (!strcmp(name, "source-filter"))
+ repo->source_filter = cgit_new_filter(value, SOURCE);
+ else if (!strcmp(name, "email-filter"))
+ repo->email_filter = cgit_new_filter(value, EMAIL);
+ else if (!strcmp(name, "owner-filter"))
+ repo->owner_filter = cgit_new_filter(value, OWNER);
+ }
+}
+
+static void config_cb(const char *name, const char *value)
+{
+ const char *arg;
+
+ if (!strcmp(name, "section"))
+ ctx.cfg.section = xstrdup(value);
+ else if (!strcmp(name, "repo.url"))
+ ctx.repo = cgit_add_repo(value);
+ else if (ctx.repo && !strcmp(name, "repo.path"))
+ ctx.repo->path = trim_end(value, '/');
+ else if (ctx.repo && skip_prefix(name, "repo.", &arg))
+ repo_config(ctx.repo, arg, value);
+ else if (!strcmp(name, "readme"))
+ string_list_append(&ctx.cfg.readme, xstrdup(value));
+ else if (!strcmp(name, "root-title"))
+ ctx.cfg.root_title = xstrdup(value);
+ else if (!strcmp(name, "root-desc"))
+ ctx.cfg.root_desc = xstrdup(value);
+ else if (!strcmp(name, "root-readme"))
+ ctx.cfg.root_readme = xstrdup(value);
+ else if (!strcmp(name, "css"))
+ ctx.cfg.css = xstrdup(value);
+ else if (!strcmp(name, "favicon"))
+ ctx.cfg.favicon = xstrdup(value);
+ else if (!strcmp(name, "footer"))
+ ctx.cfg.footer = xstrdup(value);
+ else if (!strcmp(name, "head-include"))
+ ctx.cfg.head_include = xstrdup(value);
+ else if (!strcmp(name, "header"))
+ ctx.cfg.header = xstrdup(value);
+ else if (!strcmp(name, "logo"))
+ ctx.cfg.logo = xstrdup(value);
+ else if (!strcmp(name, "logo-link"))
+ ctx.cfg.logo_link = xstrdup(value);
+ else if (!strcmp(name, "module-link"))
+ ctx.cfg.module_link = xstrdup(value);
+ else if (!strcmp(name, "strict-export"))
+ ctx.cfg.strict_export = xstrdup(value);
+ else if (!strcmp(name, "virtual-root"))
+ ctx.cfg.virtual_root = ensure_end(value, '/');
+ else if (!strcmp(name, "noplainemail"))
+ ctx.cfg.noplainemail = atoi(value);
+ else if (!strcmp(name, "noheader"))
+ ctx.cfg.noheader = atoi(value);
+ else if (!strcmp(name, "snapshots"))
+ ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
+ else if (!strcmp(name, "enable-filter-overrides"))
+ ctx.cfg.enable_filter_overrides = atoi(value);
+ else if (!strcmp(name, "enable-follow-links"))
+ ctx.cfg.enable_follow_links = atoi(value);
+ else if (!strcmp(name, "enable-http-clone"))
+ ctx.cfg.enable_http_clone = atoi(value);
+ else if (!strcmp(name, "enable-index-links"))
+ ctx.cfg.enable_index_links = atoi(value);
+ else if (!strcmp(name, "enable-index-owner"))
+ ctx.cfg.enable_index_owner = atoi(value);
+ else if (!strcmp(name, "enable-blame"))
+ ctx.cfg.enable_blame = atoi(value);
+ else if (!strcmp(name, "enable-commit-graph"))
+ ctx.cfg.enable_commit_graph = atoi(value);
+ else if (!strcmp(name, "enable-log-filecount"))
+ ctx.cfg.enable_log_filecount = atoi(value);
+ else if (!strcmp(name, "enable-log-linecount"))
+ ctx.cfg.enable_log_linecount = atoi(value);
+ else if (!strcmp(name, "enable-remote-branches"))
+ ctx.cfg.enable_remote_branches = atoi(value);
+ else if (!strcmp(name, "enable-subject-links"))
+ ctx.cfg.enable_subject_links = atoi(value);
+ else if (!strcmp(name, "enable-html-serving"))
+ ctx.cfg.enable_html_serving = atoi(value);
+ else if (!strcmp(name, "enable-tree-linenumbers"))
+ ctx.cfg.enable_tree_linenumbers = atoi(value);
+ else if (!strcmp(name, "enable-git-config"))
+ ctx.cfg.enable_git_config = atoi(value);
+ else if (!strcmp(name, "max-stats"))
+ ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
+ else if (!strcmp(name, "cache-size"))
+ ctx.cfg.cache_size = atoi(value);
+ else if (!strcmp(name, "cache-root"))
+ ctx.cfg.cache_root = xstrdup(expand_macros(value));
+ else if (!strcmp(name, "cache-root-ttl"))
+ ctx.cfg.cache_root_ttl = atoi(value);
+ else if (!strcmp(name, "cache-repo-ttl"))
+ ctx.cfg.cache_repo_ttl = atoi(value);
+ else if (!strcmp(name, "cache-scanrc-ttl"))
+ ctx.cfg.cache_scanrc_ttl = atoi(value);
+ else if (!strcmp(name, "cache-static-ttl"))
+ ctx.cfg.cache_static_ttl = atoi(value);
+ else if (!strcmp(name, "cache-dynamic-ttl"))
+ ctx.cfg.cache_dynamic_ttl = atoi(value);
+ else if (!strcmp(name, "cache-about-ttl"))
+ ctx.cfg.cache_about_ttl = atoi(value);
+ else if (!strcmp(name, "cache-snapshot-ttl"))
+ ctx.cfg.cache_snapshot_ttl = atoi(value);
+ else if (!strcmp(name, "case-sensitive-sort"))
+ ctx.cfg.case_sensitive_sort = atoi(value);
+ else if (!strcmp(name, "about-filter"))
+ ctx.cfg.about_filter = cgit_new_filter(value, ABOUT);
+ else if (!strcmp(name, "commit-filter"))
+ ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
+ else if (!strcmp(name, "email-filter"))
+ ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
+ else if (!strcmp(name, "owner-filter"))
+ ctx.cfg.owner_filter = cgit_new_filter(value, OWNER);
+ else if (!strcmp(name, "auth-filter"))
+ ctx.cfg.auth_filter = cgit_new_filter(value, AUTH);
+ else if (!strcmp(name, "embedded"))
+ ctx.cfg.embedded = atoi(value);
+ else if (!strcmp(name, "max-atom-items"))
+ ctx.cfg.max_atom_items = atoi(value);
+ else if (!strcmp(name, "max-message-length"))
+ ctx.cfg.max_msg_len = atoi(value);
+ else if (!strcmp(name, "max-repodesc-length"))
+ ctx.cfg.max_repodesc_len = atoi(value);
+ else if (!strcmp(name, "max-blob-size"))
+ ctx.cfg.max_blob_size = atoi(value);
+ else if (!strcmp(name, "max-repo-count"))
+ ctx.cfg.max_repo_count = atoi(value);
+ else if (!strcmp(name, "max-commit-count"))
+ ctx.cfg.max_commit_count = atoi(value);
+ else if (!strcmp(name, "project-list"))
+ ctx.cfg.project_list = xstrdup(expand_macros(value));
+ else if (!strcmp(name, "scan-path"))
+ if (ctx.cfg.cache_size)
+ process_cached_repolist(expand_macros(value));
+ else if (ctx.cfg.project_list)
+ scan_projects(expand_macros(value),
+ ctx.cfg.project_list, repo_config);
+ else
+ scan_tree(expand_macros(value), repo_config);
+ else if (!strcmp(name, "scan-hidden-path"))
+ ctx.cfg.scan_hidden_path = atoi(value);
+ else if (!strcmp(name, "section-from-path"))
+ ctx.cfg.section_from_path = atoi(value);
+ else if (!strcmp(name, "repository-sort"))
+ ctx.cfg.repository_sort = xstrdup(value);
+ else if (!strcmp(name, "section-sort"))
+ ctx.cfg.section_sort = atoi(value);
+ else if (!strcmp(name, "source-filter"))
+ ctx.cfg.source_filter = cgit_new_filter(value, SOURCE);
+ else if (!strcmp(name, "summary-log"))
+ ctx.cfg.summary_log = atoi(value);
+ else if (!strcmp(name, "summary-branches"))
+ ctx.cfg.summary_branches = atoi(value);
+ else if (!strcmp(name, "summary-tags"))
+ ctx.cfg.summary_tags = atoi(value);
+ else if (!strcmp(name, "side-by-side-diffs"))
+ ctx.cfg.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
+ else if (!strcmp(name, "agefile"))
+ ctx.cfg.agefile = xstrdup(value);
+ else if (!strcmp(name, "mimetype-file"))
+ ctx.cfg.mimetype_file = xstrdup(value);
+ else if (!strcmp(name, "renamelimit"))
+ ctx.cfg.renamelimit = atoi(value);
+ else if (!strcmp(name, "remove-suffix"))
+ ctx.cfg.remove_suffix = atoi(value);
+ else if (!strcmp(name, "robots"))
+ ctx.cfg.robots = xstrdup(value);
+ else if (!strcmp(name, "clone-prefix"))
+ ctx.cfg.clone_prefix = xstrdup(value);
+ else if (!strcmp(name, "clone-url"))
+ ctx.cfg.clone_url = xstrdup(value);
+ else if (!strcmp(name, "local-time"))
+ ctx.cfg.local_time = atoi(value);
+ else if (!strcmp(name, "commit-sort")) {
+ if (!strcmp(value, "date"))
+ ctx.cfg.commit_sort = 1;
+ if (!strcmp(value, "topo"))
+ ctx.cfg.commit_sort = 2;
+ } else if (!strcmp(name, "branch-sort")) {
+ if (!strcmp(value, "age"))
+ ctx.cfg.branch_sort = 1;
+ if (!strcmp(value, "name"))
+ ctx.cfg.branch_sort = 0;
+ } else if (skip_prefix(name, "mimetype.", &arg))
+ add_mimetype(arg, value);
+ else if (!strcmp(name, "include"))
+ parse_configfile(expand_macros(value), config_cb);
+}
+
+static void querystring_cb(const char *name, const char *value)
+{
+ if (!value)
+ value = "";
+
+ if (!strcmp(name,"r")) {
+ ctx.qry.repo = xstrdup(value);
+ ctx.repo = cgit_get_repoinfo(value);
+ } else if (!strcmp(name, "p")) {
+ ctx.qry.page = xstrdup(value);
+ } else if (!strcmp(name, "url")) {
+ if (*value == '/')
+ value++;
+ ctx.qry.url = xstrdup(value);
+ cgit_parse_url(value);
+ } else if (!strcmp(name, "qt")) {
+ ctx.qry.grep = xstrdup(value);
+ } else if (!strcmp(name, "q")) {
+ ctx.qry.search = xstrdup(value);
+ } else if (!strcmp(name, "h")) {
+ ctx.qry.head = xstrdup(value);
+ ctx.qry.has_symref = 1;
+ } else if (!strcmp(name, "id")) {
+ ctx.qry.oid = xstrdup(value);
+ ctx.qry.has_oid = 1;
+ } else if (!strcmp(name, "id2")) {
+ ctx.qry.oid2 = xstrdup(value);
+ ctx.qry.has_oid = 1;
+ } else if (!strcmp(name, "ofs")) {
+ ctx.qry.ofs = atoi(value);
+ } else if (!strcmp(name, "path")) {
+ ctx.qry.path = trim_end(value, '/');
+ } else if (!strcmp(name, "name")) {
+ ctx.qry.name = xstrdup(value);
+ } else if (!strcmp(name, "s")) {
+ ctx.qry.sort = xstrdup(value);
+ } else if (!strcmp(name, "showmsg")) {
+ ctx.qry.showmsg = atoi(value);
+ } else if (!strcmp(name, "period")) {
+ ctx.qry.period = xstrdup(value);
+ } else if (!strcmp(name, "dt")) {
+ ctx.qry.difftype = atoi(value);
+ ctx.qry.has_difftype = 1;
+ } else if (!strcmp(name, "ss")) {
+ /* No longer generated, but there may be links out there. */
+ ctx.qry.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
+ ctx.qry.has_difftype = 1;
+ } else if (!strcmp(name, "all")) {
+ ctx.qry.show_all = atoi(value);
+ } else if (!strcmp(name, "context")) {
+ ctx.qry.context = atoi(value);
+ } else if (!strcmp(name, "ignorews")) {
+ ctx.qry.ignorews = atoi(value);
+ } else if (!strcmp(name, "follow")) {
+ ctx.qry.follow = atoi(value);
+ }
+}
+
+static void prepare_context(void)
+{
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.cfg.agefile = "info/web/last-modified";
+ ctx.cfg.cache_size = 0;
+ ctx.cfg.cache_max_create_time = 5;
+ ctx.cfg.cache_root = CGIT_CACHE_ROOT;
+ ctx.cfg.cache_about_ttl = 15;
+ ctx.cfg.cache_snapshot_ttl = 5;
+ ctx.cfg.cache_repo_ttl = 5;
+ ctx.cfg.cache_root_ttl = 5;
+ ctx.cfg.cache_scanrc_ttl = 15;
+ ctx.cfg.cache_dynamic_ttl = 5;
+ ctx.cfg.cache_static_ttl = -1;
+ ctx.cfg.case_sensitive_sort = 1;
+ ctx.cfg.branch_sort = 0;
+ ctx.cfg.commit_sort = 0;
+ ctx.cfg.css = "/cgit.css";
+ ctx.cfg.logo = "/cgit.png";
+ ctx.cfg.favicon = "/favicon.ico";
+ ctx.cfg.local_time = 0;
+ ctx.cfg.enable_http_clone = 1;
+ ctx.cfg.enable_index_owner = 1;
+ ctx.cfg.enable_tree_linenumbers = 1;
+ ctx.cfg.enable_git_config = 0;
+ ctx.cfg.max_repo_count = 50;
+ ctx.cfg.max_commit_count = 50;
+ ctx.cfg.max_lock_attempts = 5;
+ ctx.cfg.max_msg_len = 80;
+ ctx.cfg.max_repodesc_len = 80;
+ ctx.cfg.max_blob_size = 0;
+ ctx.cfg.max_stats = 0;
+ ctx.cfg.project_list = NULL;
+ ctx.cfg.renamelimit = -1;
+ ctx.cfg.remove_suffix = 0;
+ ctx.cfg.robots = "index, nofollow";
+ ctx.cfg.root_title = "Git repository browser";
+ ctx.cfg.root_desc = "a fast webinterface for the git dscm";
+ ctx.cfg.scan_hidden_path = 0;
+ ctx.cfg.script_name = CGIT_SCRIPT_NAME;
+ ctx.cfg.section = "";
+ ctx.cfg.repository_sort = "name";
+ ctx.cfg.section_sort = 1;
+ ctx.cfg.summary_branches = 10;
+ ctx.cfg.summary_log = 10;
+ ctx.cfg.summary_tags = 10;
+ ctx.cfg.max_atom_items = 10;
+ ctx.cfg.difftype = DIFF_UNIFIED;
+ ctx.env.cgit_config = getenv("CGIT_CONFIG");
+ ctx.env.http_host = getenv("HTTP_HOST");
+ ctx.env.https = getenv("HTTPS");
+ ctx.env.no_http = getenv("NO_HTTP");
+ ctx.env.path_info = getenv("PATH_INFO");
+ ctx.env.query_string = getenv("QUERY_STRING");
+ ctx.env.request_method = getenv("REQUEST_METHOD");
+ ctx.env.script_name = getenv("SCRIPT_NAME");
+ ctx.env.server_name = getenv("SERVER_NAME");
+ ctx.env.server_port = getenv("SERVER_PORT");
+ ctx.env.http_cookie = getenv("HTTP_COOKIE");
+ ctx.env.http_referer = getenv("HTTP_REFERER");
+ ctx.env.content_length = getenv("CONTENT_LENGTH") ? strtoul(getenv("CONTENT_LENGTH"), NULL, 10) : 0;
+ ctx.env.authenticated = 0;
+ ctx.page.mimetype = "text/html";
+ ctx.page.charset = PAGE_ENCODING;
+ ctx.page.filename = NULL;
+ ctx.page.size = 0;
+ ctx.page.modified = time(NULL);
+ ctx.page.expires = ctx.page.modified;
+ ctx.page.etag = NULL;
+ string_list_init(&ctx.cfg.mimetypes, 1);
+ if (ctx.env.script_name)
+ ctx.cfg.script_name = xstrdup(ctx.env.script_name);
+ if (ctx.env.query_string)
+ ctx.qry.raw = xstrdup(ctx.env.query_string);
+ if (!ctx.env.cgit_config)
+ ctx.env.cgit_config = CGIT_CONFIG;
+}
+
+struct refmatch {
+ char *req_ref;
+ char *first_ref;
+ int match;
+};
+
+static int find_current_ref(const char *refname, const struct object_id *oid,
+ int flags, void *cb_data)
+{
+ struct refmatch *info;
+
+ info = (struct refmatch *)cb_data;
+ if (!strcmp(refname, info->req_ref))
+ info->match = 1;
+ if (!info->first_ref)
+ info->first_ref = xstrdup(refname);
+ return info->match;
+}
+
+static void free_refmatch_inner(struct refmatch *info)
+{
+ if (info->first_ref)
+ free(info->first_ref);
+}
+
+static char *find_default_branch(struct cgit_repo *repo)
+{
+ struct refmatch info;
+ char *ref;
+
+ info.req_ref = repo->defbranch;
+ info.first_ref = NULL;
+ info.match = 0;
+ for_each_branch_ref(find_current_ref, &info);
+ if (info.match)
+ ref = info.req_ref;
+ else
+ ref = info.first_ref;
+ if (ref)
+ ref = xstrdup(ref);
+ free_refmatch_inner(&info);
+
+ return ref;
+}
+
+static char *guess_defbranch(void)
+{
+ const char *ref, *refname;
+ struct object_id oid;
+
+ ref = resolve_ref_unsafe("HEAD", 0, &oid, NULL);
+ if (!ref || !skip_prefix(ref, "refs/heads/", &refname))
+ return "master";
+ return xstrdup(refname);
+}
+
+/* The caller must free filename and ref after calling this. */
+static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
+{
+ const char *colon;
+
+ *filename = NULL;
+ *ref = NULL;
+
+ if (!readme || !readme[0])
+ return;
+
+ /* Check if the readme is tracked in the git repo. */
+ colon = strchr(readme, ':');
+ if (colon && strlen(colon) > 1) {
+ /* If it starts with a colon, we want to use
+ * the default branch */
+ if (colon == readme && repo->defbranch)
+ *ref = xstrdup(repo->defbranch);
+ else
+ *ref = xstrndup(readme, colon - readme);
+ readme = colon + 1;
+ }
+
+ /* Prepend repo path to relative readme path unless tracked. */
+ if (!(*ref) && readme[0] != '/')
+ *filename = fmtalloc("%s/%s", repo->path, readme);
+ else
+ *filename = xstrdup(readme);
+}
+static void choose_readme(struct cgit_repo *repo)
+{
+ int found;
+ char *filename, *ref;
+ struct string_list_item *entry;
+
+ if (!repo->readme.nr)
+ return;
+
+ found = 0;
+ for_each_string_list_item(entry, &repo->readme) {
+ parse_readme(entry->string, &filename, &ref, repo);
+ if (!filename) {
+ free(filename);
+ free(ref);
+ continue;
+ }
+ if (ref) {
+ if (cgit_ref_path_exists(filename, ref, 1)) {
+ found = 1;
+ break;
+ }
+ }
+ else if (!access(filename, R_OK)) {
+ found = 1;
+ break;
+ }
+ free(filename);
+ free(ref);
+ }
+ repo->readme.strdup_strings = 1;
+ string_list_clear(&repo->readme, 0);
+ repo->readme.strdup_strings = 0;
+ if (found)
+ string_list_append(&repo->readme, filename)->util = ref;
+}
+
+static void print_no_repo_clone_urls(const char *url)
+{
+ html("<tr><td><a rel='vcs-git' href='");
+ html_url_path(url);
+ html("' title='");
+ html_attr(ctx.repo->name);
+ html(" Git repository'>");
+ html_txt(url);
+ html("</a></td></tr>\n");
+}
+
+static void prepare_repo_env(int *nongit)
+{
+ /* The path to the git repository. */
+ setenv("GIT_DIR", ctx.repo->path, 1);
+
+ /* Setup the git directory and initialize the notes system. Both of these
+ * load local configuration from the git repository, so we do them both while
+ * the HOME variables are unset. */
+ setup_git_directory_gently(nongit);
+ load_display_notes(NULL);
+}
+
+static int prepare_repo_cmd(int nongit)
+{
+ struct object_id oid;
+ int rc;
+
+ if (nongit) {
+ const char *name = ctx.repo->name;
+ rc = errno;
+ ctx.page.title = fmtalloc("%s - %s", ctx.cfg.root_title,
+ "config error");
+ ctx.repo = NULL;
+ cgit_print_http_headers();
+ cgit_print_docstart();
+ cgit_print_pageheader();
+ cgit_print_error("Failed to open %s: %s", name,
+ rc ? strerror(rc) : "Not a valid git repository");
+ cgit_print_docend();
+ return 1;
+ }
+ ctx.page.title = fmtalloc("%s - %s", ctx.repo->name, ctx.repo->desc);
+
+ if (!ctx.repo->defbranch)
+ ctx.repo->defbranch = guess_defbranch();
+
+ if (!ctx.qry.head) {
+ ctx.qry.nohead = 1;
+ ctx.qry.head = find_default_branch(ctx.repo);
+ }
+
+ if (!ctx.qry.head) {
+ cgit_print_http_headers();
+ cgit_print_docstart();
+ cgit_print_pageheader();
+ cgit_print_error("Repository seems to be empty");
+ if (!strcmp(ctx.qry.page, "summary")) {
+ html("<table class='list'><tr class='nohover'><td>&nbsp;</td></tr><tr class='nohover'><th class='left'>Clone</th></tr>\n");
+ cgit_prepare_repo_env(ctx.repo);
+ cgit_add_clone_urls(print_no_repo_clone_urls);
+ html("</table>\n");
+ }
+ cgit_print_docend();
+ return 1;
+ }
+
+ if (get_oid(ctx.qry.head, &oid)) {
+ char *old_head = ctx.qry.head;
+ ctx.qry.head = xstrdup(ctx.repo->defbranch);
+ cgit_print_error_page(404, "Not found",
+ "Invalid branch: %s", old_head);
+ free(old_head);
+ return 1;
+ }
+ string_list_sort(&ctx.repo->submodules);
+ cgit_prepare_repo_env(ctx.repo);
+ choose_readme(ctx.repo);
+ return 0;
+}
+
+static inline void open_auth_filter(const char *function)
+{
+ cgit_open_filter(ctx.cfg.auth_filter, function,
+ ctx.env.http_cookie ? ctx.env.http_cookie : "",
+ ctx.env.request_method ? ctx.env.request_method : "",
+ ctx.env.query_string ? ctx.env.query_string : "",
+ ctx.env.http_referer ? ctx.env.http_referer : "",
+ ctx.env.path_info ? ctx.env.path_info : "",
+ ctx.env.http_host ? ctx.env.http_host : "",
+ ctx.env.https ? ctx.env.https : "",
+ ctx.qry.repo ? ctx.qry.repo : "",
+ ctx.qry.page ? ctx.qry.page : "",
+ cgit_currentfullurl(),
+ cgit_loginurl());
+}
+
+/* We intentionally keep this rather small, instead of looping and
+ * feeding it to the filter a couple bytes at a time. This way, the
+ * filter itself does not need to handle any denial of service or
+ * buffer bloat issues. If this winds up being too small, people
+ * will complain on the mailing list, and we'll increase it as needed. */
+#define MAX_AUTHENTICATION_POST_BYTES 4096
+/* The filter is expected to spit out "Status: " and all headers. */
+static inline void authenticate_post(void)
+{
+ char buffer[MAX_AUTHENTICATION_POST_BYTES];
+ ssize_t len;
+
+ open_auth_filter("authenticate-post");
+ len = ctx.env.content_length;
+ if (len > MAX_AUTHENTICATION_POST_BYTES)
+ len = MAX_AUTHENTICATION_POST_BYTES;
+ if ((len = read(STDIN_FILENO, buffer, len)) < 0)
+ die_errno("Could not read POST from stdin");
+ if (write(STDOUT_FILENO, buffer, len) < 0)
+ die_errno("Could not write POST to stdout");
+ cgit_close_filter(ctx.cfg.auth_filter);
+ exit(0);
+}
+
+static inline void authenticate_cookie(void)
+{
+ /* If we don't have an auth_filter, consider all cookies valid, and thus return early. */
+ if (!ctx.cfg.auth_filter) {
+ ctx.env.authenticated = 1;
+ return;
+ }
+
+ /* If we're having something POST'd to /login, we're authenticating POST,
+ * instead of the cookie, so call authenticate_post and bail out early.
+ * This pattern here should match /?p=login with POST. */
+ if (ctx.env.request_method && ctx.qry.page && !ctx.repo && \
+ !strcmp(ctx.env.request_method, "POST") && !strcmp(ctx.qry.page, "login")) {
+ authenticate_post();
+ return;
+ }
+
+ /* If we've made it this far, we're authenticating the cookie for real, so do that. */
+ open_auth_filter("authenticate-cookie");
+ ctx.env.authenticated = cgit_close_filter(ctx.cfg.auth_filter);
+}
+
+static void process_request(void)
+{
+ struct cgit_cmd *cmd;
+ int nongit = 0;
+
+ /* If we're not yet authenticated, no matter what page we're on,
+ * display the authentication body from the auth_filter. This should
+ * never be cached. */
+ if (!ctx.env.authenticated) {
+ ctx.page.title = "Authentication Required";
+ cgit_print_http_headers();
+ cgit_print_docstart();
+ cgit_print_pageheader();
+ open_auth_filter("body");
+ cgit_close_filter(ctx.cfg.auth_filter);
+ cgit_print_docend();
+ return;
+ }
+
+ if (ctx.repo)
+ prepare_repo_env(&nongit);
+
+ cmd = cgit_get_cmd();
+ if (!cmd) {
+ ctx.page.title = "cgit error";
+ cgit_print_error_page(404, "Not found", "Invalid request");
+ return;
+ }
+
+ if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
+ ctx.page.title = "cgit error";
+ cgit_print_error_page(404, "Not found", "Invalid request");
+ return;
+ }
+
+ if (cmd->want_repo && !ctx.repo) {
+ cgit_print_error_page(400, "Bad request",
+ "No repository selected");
+ return;
+ }
+
+ /* If cmd->want_vpath is set, assume ctx.qry.path contains a "virtual"
+ * in-project path limit to be made available at ctx.qry.vpath.
+ * Otherwise, no path limit is in effect (ctx.qry.vpath = NULL).
+ */
+ ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
+
+ if (ctx.repo && prepare_repo_cmd(nongit))
+ return;
+
+ cmd->fn();
+}
+
+static int cmp_repos(const void *a, const void *b)
+{
+ const struct cgit_repo *ra = a, *rb = b;
+ return strcmp(ra->url, rb->url);
+}
+
+static char *build_snapshot_setting(int bitmap)
+{
+ const struct cgit_snapshot_format *f;
+ struct strbuf result = STRBUF_INIT;
+
+ for (f = cgit_snapshot_formats; f->suffix; f++) {
+ if (cgit_snapshot_format_bit(f) & bitmap) {
+ if (result.len)
+ strbuf_addch(&result, ' ');
+ strbuf_addstr(&result, f->suffix);
+ }
+ }
+ return strbuf_detach(&result, NULL);
+}
+
+static char *get_first_line(char *txt)
+{
+ char *t = xstrdup(txt);
+ char *p = strchr(t, '\n');
+ if (p)
+ *p = '\0';
+ return t;
+}
+
+static void print_repo(FILE *f, struct cgit_repo *repo)
+{
+ struct string_list_item *item;
+ fprintf(f, "repo.url=%s\n", repo->url);
+ fprintf(f, "repo.name=%s\n", repo->name);
+ fprintf(f, "repo.path=%s\n", repo->path);
+ if (repo->owner)
+ fprintf(f, "repo.owner=%s\n", repo->owner);
+ if (repo->desc) {
+ char *tmp = get_first_line(repo->desc);
+ fprintf(f, "repo.desc=%s\n", tmp);
+ free(tmp);
+ }
+ for_each_string_list_item(item, &repo->readme) {
+ if (item->util)
+ fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
+ else
+ fprintf(f, "repo.readme=%s\n", item->string);
+ }
+ if (repo->defbranch)
+ fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
+ if (repo->extra_head_content)
+ fprintf(f, "repo.extra-head-content=%s\n", repo->extra_head_content);
+ if (repo->module_link)
+ fprintf(f, "repo.module-link=%s\n", repo->module_link);
+ if (repo->section)
+ fprintf(f, "repo.section=%s\n", repo->section);
+ if (repo->homepage)
+ fprintf(f, "repo.homepage=%s\n", repo->homepage);
+ if (repo->clone_url)
+ fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
+ fprintf(f, "repo.enable-blame=%d\n",
+ repo->enable_blame);
+ fprintf(f, "repo.enable-commit-graph=%d\n",
+ repo->enable_commit_graph);
+ fprintf(f, "repo.enable-log-filecount=%d\n",
+ repo->enable_log_filecount);
+ fprintf(f, "repo.enable-log-linecount=%d\n",
+ repo->enable_log_linecount);
+ if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
+ cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
+ if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
+ cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
+ if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
+ cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
+ if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
+ cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
+ if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
+ cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
+ if (repo->snapshots != ctx.cfg.snapshots) {
+ char *tmp = build_snapshot_setting(repo->snapshots);
+ fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
+ free(tmp);
+ }
+ if (repo->snapshot_prefix)
+ fprintf(f, "repo.snapshot-prefix=%s\n", repo->snapshot_prefix);
+ if (repo->max_stats != ctx.cfg.max_stats)
+ fprintf(f, "repo.max-stats=%s\n",
+ cgit_find_stats_periodname(repo->max_stats));
+ if (repo->logo)
+ fprintf(f, "repo.logo=%s\n", repo->logo);
+ if (repo->logo_link)
+ fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
+ fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
+ fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
+ fprintf(f, "repo.enable-html-serving=%d\n", repo->enable_html_serving);
+ if (repo->branch_sort == 1)
+ fprintf(f, "repo.branch-sort=age\n");
+ if (repo->commit_sort) {
+ if (repo->commit_sort == 1)
+ fprintf(f, "repo.commit-sort=date\n");
+ else if (repo->commit_sort == 2)
+ fprintf(f, "repo.commit-sort=topo\n");
+ }
+ fprintf(f, "repo.hide=%d\n", repo->hide);
+ fprintf(f, "repo.ignore=%d\n", repo->ignore);
+ fprintf(f, "\n");
+}
+
+static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
+{
+ int i;
+
+ for (i = start; i < list->count; i++)
+ print_repo(f, &list->repos[i]);
+}
+
+/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
+ * and return 0 on success.
+ */
+static int generate_cached_repolist(const char *path, const char *cached_rc)
+{
+ struct strbuf locked_rc = STRBUF_INIT;
+ int result = 0;
+ int idx;
+ FILE *f;
+
+ strbuf_addf(&locked_rc, "%s.lock", cached_rc);
+ f = fopen(locked_rc.buf, "wx");
+ if (!f) {
+ /* Inform about the error unless the lockfile already existed,
+ * since that only means we've got concurrent requests.
+ */
+ result = errno;
+ if (result != EEXIST)
+ fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
+ locked_rc.buf, strerror(result), result);
+ goto out;
+ }
+ idx = cgit_repolist.count;
+ if (ctx.cfg.project_list)
+ scan_projects(path, ctx.cfg.project_list, repo_config);
+ else
+ scan_tree(path, repo_config);
+ print_repolist(f, &cgit_repolist, idx);
+ if (rename(locked_rc.buf, cached_rc))
+ fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
+ locked_rc.buf, cached_rc, strerror(errno), errno);
+ fclose(f);
+out:
+ strbuf_release(&locked_rc);
+ return result;
+}
+
+static void process_cached_repolist(const char *path)
+{
+ struct stat st;
+ struct strbuf cached_rc = STRBUF_INIT;
+ time_t age;
+ unsigned long hash;
+
+ hash = hash_str(path);
+ if (ctx.cfg.project_list)
+ hash += hash_str(ctx.cfg.project_list);
+ strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
+
+ if (stat(cached_rc.buf, &st)) {
+ /* Nothing is cached, we need to scan without forking. And
+ * if we fail to generate a cached repolist, we need to
+ * invoke scan_tree manually.
+ */
+ if (generate_cached_repolist(path, cached_rc.buf)) {
+ if (ctx.cfg.project_list)
+ scan_projects(path, ctx.cfg.project_list,
+ repo_config);
+ else
+ scan_tree(path, repo_config);
+ }
+ goto out;
+ }
+
+ parse_configfile(cached_rc.buf, config_cb);
+
+ /* If the cached configfile hasn't expired, lets exit now */
+ age = time(NULL) - st.st_mtime;
+ if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
+ goto out;
+
+ /* The cached repolist has been parsed, but it was old. So lets
+ * rescan the specified path and generate a new cached repolist
+ * in a child-process to avoid latency for the current request.
+ */
+ if (fork())
+ goto out;
+
+ exit(generate_cached_repolist(path, cached_rc.buf));
+out:
+ strbuf_release(&cached_rc);
+}
+
+static void cgit_parse_args(int argc, const char **argv)
+{
+ int i;
+ const char *arg;
+ int scan = 0;
+
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "--version")) {
+ printf("CGit %s | https://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
+#ifdef NO_LUA
+ printf("[-] ");
+#else
+ printf("[+] ");
+#endif
+ printf("Lua scripting\n");
+#ifndef HAVE_LINUX_SENDFILE
+ printf("[-] ");
+#else
+ printf("[+] ");
+#endif
+ printf("Linux sendfile() usage\n");
+
+ exit(0);
+ }
+ if (skip_prefix(argv[i], "--cache=", &arg)) {
+ ctx.cfg.cache_root = xstrdup(arg);
+ } else if (!strcmp(argv[i], "--nohttp")) {
+ ctx.env.no_http = "1";
+ } else if (skip_prefix(argv[i], "--query=", &arg)) {
+ ctx.qry.raw = xstrdup(arg);
+ } else if (skip_prefix(argv[i], "--repo=", &arg)) {
+ ctx.qry.repo = xstrdup(arg);
+ } else if (skip_prefix(argv[i], "--page=", &arg)) {
+ ctx.qry.page = xstrdup(arg);
+ } else if (skip_prefix(argv[i], "--head=", &arg)) {
+ ctx.qry.head = xstrdup(arg);
+ ctx.qry.has_symref = 1;
+ } else if (skip_prefix(argv[i], "--oid=", &arg)) {
+ ctx.qry.oid = xstrdup(arg);
+ ctx.qry.has_oid = 1;
+ } else if (skip_prefix(argv[i], "--ofs=", &arg)) {
+ ctx.qry.ofs = atoi(arg);
+ } else if (skip_prefix(argv[i], "--scan-tree=", &arg) ||
+ skip_prefix(argv[i], "--scan-path=", &arg)) {
+ /*
+ * HACK: The global snapshot bit mask defines the set
+ * of allowed snapshot formats, but the config file
+ * hasn't been parsed yet so the mask is currently 0.
+ * By setting all bits high before scanning we make
+ * sure that any in-repo cgitrc snapshot setting is
+ * respected by scan_tree().
+ *
+ * NOTE: We assume that there aren't more than 8
+ * different snapshot formats supported by cgit...
+ */
+ ctx.cfg.snapshots = 0xFF;
+ scan++;
+ scan_tree(arg, repo_config);
+ }
+ }
+ if (scan) {
+ qsort(cgit_repolist.repos, cgit_repolist.count,
+ sizeof(struct cgit_repo), cmp_repos);
+ print_repolist(stdout, &cgit_repolist, 0);
+ exit(0);
+ }
+}
+
+static int calc_ttl(void)
+{
+ if (!ctx.repo)
+ return ctx.cfg.cache_root_ttl;
+
+ if (!ctx.qry.page)
+ return ctx.cfg.cache_repo_ttl;
+
+ if (!strcmp(ctx.qry.page, "about"))
+ return ctx.cfg.cache_about_ttl;
+
+ if (!strcmp(ctx.qry.page, "snapshot"))
+ return ctx.cfg.cache_snapshot_ttl;
+
+ if (ctx.qry.has_oid)
+ return ctx.cfg.cache_static_ttl;
+
+ if (ctx.qry.has_symref)
+ return ctx.cfg.cache_dynamic_ttl;
+
+ return ctx.cfg.cache_repo_ttl;
+}
+
+int cmd_main(int argc, const char **argv)
+{
+ const char *path;
+ int err, ttl;
+
+ cgit_init_filters();
+ atexit(cgit_cleanup_filters);
+
+ prepare_context();
+ cgit_repolist.length = 0;
+ cgit_repolist.count = 0;
+ cgit_repolist.repos = NULL;
+
+ cgit_parse_args(argc, argv);
+ parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
+ ctx.repo = NULL;
+ http_parse_querystring(ctx.qry.raw, querystring_cb);
+
+ /* If virtual-root isn't specified in cgitrc, lets pretend
+ * that virtual-root equals SCRIPT_NAME, minus any possibly
+ * trailing slashes.
+ */
+ if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
+ ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
+
+ /* If no url parameter is specified on the querystring, lets
+ * use PATH_INFO as url. This allows cgit to work with virtual
+ * urls without the need for rewriterules in the webserver (as
+ * long as PATH_INFO is included in the cache lookup key).
+ */
+ path = ctx.env.path_info;
+ if (!ctx.qry.url && path) {
+ if (path[0] == '/')
+ path++;
+ ctx.qry.url = xstrdup(path);
+ if (ctx.qry.raw) {
+ char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
+ free(ctx.qry.raw);
+ ctx.qry.raw = newqry;
+ } else
+ ctx.qry.raw = xstrdup(ctx.qry.url);
+ cgit_parse_url(ctx.qry.url);
+ }
+
+ /* Before we go any further, we set ctx.env.authenticated by checking to see
+ * if the supplied cookie is valid. All cookies are valid if there is no
+ * auth_filter. If there is an auth_filter, the filter decides. */
+ authenticate_cookie();
+
+ ttl = calc_ttl();
+ if (ttl < 0)
+ ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
+ else
+ ctx.page.expires += ttl * 60;
+ if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
+ ctx.cfg.cache_size = 0;
+ err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
+ ctx.qry.raw, ttl, process_request);
+ cgit_cleanup_filters();
+ if (err)
+ cgit_print_error("Error processing page: %s (%d)",
+ strerror(err), err);
+ return err;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 13:36:06 +0000