cgitrc - runtime configuration for cgit ======================================= Cgitrc contains all runtime settings for cgit, including the list of git repositories, formatted as a line-separated list of NAME=VALUE pairs. Blank lines, and lines starting with '#' or ';', are ignored, and so is a line carrying no '='. A comment cannot share a line with a setting, since everything after the '=' belongs to the value. A NAME cgit does not recognise is ignored with a warning on stderr, which the web server collects in its error log. The default location of cgitrc, defined at compile time, is /etc/cgitrc. At runtime, cgit will consult the environment variable CGIT_CONFIG and, if defined, use its value instead. Global settings --------------- about-filter:: Specifies a command which will be invoked to format the content of about pages (both top-level and for each repository). The command will get the content of the about-file on its STDIN, the name of the file as the first argument, and the STDOUT from the command will be included verbatim on the about page. Default value: none. When no about-filter is set, the readme is escaped and served as plain text. A bundled Lua filter, about-render.lua, renders markdown, man pages and plain text when about-filter points at it. See also: "Filter API". age-file:: Specifies a path, relative to each repository path, which can be used to specify the date and time of the youngest commit in the repository. The first line in the file is used as input to the "parse_date" function in libgit. Recommended timestamp-format is "yyyy-mm-dd hh:mm:ss". You may want to generate this file from a post-receive hook. Default value: "info/web/last-modified". auth-filter:: Specifies a command that will be invoked for authenticating repository access. Receives 12 arguments, with request data on stdin and its answer on stdout, as described under "Filter API". If no auth-filter is specified, no authentication is performed. Default value: none. branch-sort:: Flag which, when set to "age", enables date ordering in the branch ref list, and when set to "name" enables ordering by branch name. Default value: "name". cache-about-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of the repository about page. See also: "The cache". Default value: "15". cache-dynamic-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of repository pages accessed without a fixed SHA1. See also: "The cache". Default value: "5". cache-index-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of the repository index page. See also: "The cache". Default value: "5". cache-root:: Path used to store the cgit cache entries. Default value: "/var/cache/cgit". See also: "Macro expansion" and the note on ownership under "The cache". cache-scan-ttl:: Number which specifies the time-to-live, in minutes, for the result of scanning a path for git repositories. See also: "The cache". Default value: "15". cache-size:: The maximum number of entries in the cgit cache. When set to "0", caching is disabled. See also: "The cache". Default value: "0". cache-snapshot-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of snapshots. A snapshot requested with a fixed object id uses "cache-static-ttl" instead, since its content can never change. See also: "The cache". Default value: "5". cache-static-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of repository pages accessed with a fixed SHA1. See also: "The cache". Default value: "-1". cache-summary-ttl:: Number which specifies the time-to-live, in minutes, for the cached version of the repository summary page. See also: "The cache". Default value: "5". case-sensitive-sort:: Sort items in the repo list case sensitively. Default value: "1". See also: repository-sort, section-sort. clone-prefix:: Space-separated list of common prefixes which, when combined with a repository url, generates valid clone urls for the repository. This setting is only used if `repo.clone-url` is unspecified. Default value: none. clone-url:: Space-separated list of clone-url templates. This setting is only used if `repo.clone-url` is unspecified. Default value: none. See also: "Macro expansion", "Filter API". commit-filter:: Specifies a command which will be invoked to format commit messages. The command will get the message on its STDIN, and the STDOUT from the command will be included verbatim as the commit message, i.e. this can be used to implement bugtracker integration. Default value: none. See also: "Filter API". commit-sort:: Flag which, when set to "date", enables strict date ordering in the commit log, and when set to "topo" enables strict topological ordering. If unset, the default ordering of "git log" is used. Default value: unset. css:: Url which specifies the css document to include in all cgit pages. Default value: "/cgit.css". May be given multiple times, each css URL path is added in the head section of the document in turn. Setting this to an empty string will disable generation of the link to this file in the head section. date-format:: Format used for the calendar dates in the age columns of the log, refs and index pages, both when "enable-relative-dates" is off and when a log entry is too old to be shown as an age. Accepts the same names as git's --date option: "default", "human", "iso" (or "iso8601"), "iso-strict" (or "iso8601-strict"), "raw", "relative", "rfc" (or "rfc2822"), "short" and "unix", each of which may carry a "-local" suffix, plus "format:" for an arbitrary layout. An unrecognised value is ignored. Dates elsewhere, such as the author and committer lines on the commit page, are always ISO 8601 and are not affected, nor are the exact timestamps shown on hover. Default value: "short". See also: "local-time". email-filter:: Specifies a command which will be invoked to format names and email address of committers, authors, and taggers, as represented in various places throughout the cgit interface. This command will receive an email address and an origin page string as its command line arguments, and the text to format on STDIN. It is to write the formatted text back out onto STDOUT. Default value: none. See also: "Filter API". embedded:: Flag which, when set to "1", will make cgit generate a html fragment suitable for embedding in other html pages. Default value: "0". See also: "enable-header". enable-blame:: Flag which, when set to "1", will allow cgit to provide a "blame" page for files, and will make it generate links to that page in appropriate places. Default value: "0". enable-cache-list:: Flag which, when set to "1", exposes the "ls_cache" page. That page lists the cache directory path and the URLs of requests other visitors made, so it is disabled by default and should stay off on any instance where that disclosure matters. Default value: "0". enable-commit-graph:: Flag which, when set to "1", will make cgit print an ASCII-art commit history graph to the left of the commit messages in the repository log page. Default value: "0". enable-follow-links:: Flag which, when set to "1", allows users to follow a file in the log view. Default value: "0". enable-git-config:: Flag which, when set to "1", will allow cgit to use git config to set any repo specific settings. This option is used in conjunction with "scan-path", and must be defined prior, to augment repo-specific settings. The keys gitweb.owner, gitweb.category, and gitweb.description will map to the cgit keys repo.owner, repo.section, and repo.desc respectively. All git config keys that begin with "cgit." will be mapped to the corresponding "repo." key in cgit, with the filter keys among them waiting on "trust-scan-filters". Default value: "0". See also: scan-path, section-from-path, trust-scan-filters. enable-gitmodules-links:: Flag which, when set to "1", makes submodule listings derive a link from the url recorded in the .gitmodules file at the shown revision, for submodules that no module-link template covers. The url is first matched, by its trailing path components, against the repositories served by this cgit instance, so ssh, file and relative urls still get a link when their target is hosted here, and the commit hash then links to the target repository's commit page. Otherwise a plain http or https url is linked as it is, an ssh url to a well-known public host is rewritten to its https form, and any other url is left unlinked and shown as a tooltip instead. Default value: "0". See also: "repo.enable-gitmodules-links". enable-header:: Flag which, when set to "0", makes cgit omit the standard header on all pages. Default value: "1". See also: "embedded". enable-html-serving:: Flag which, when set to "1", will allow the /plain handler to serve mimetype headers that result in the file being treated as HTML by the browser. When set to "0", such file types are returned instead as text/plain or application/octet-stream. Default value: "0". See also: "repo.enable-html-serving". enable-http-clone:: If set to "1", cgit will act as a dumb HTTP endpoint for git clones. You can add "http://$HTTP_HOST$SCRIPT_NAME/$CGIT_REPO_URL" to clone-url to expose this feature. If you use an alternate way of serving git repositories, you may wish to disable this. Default value: "1". enable-index-links:: Flag which, when set to "1", will make cgit generate extra links for each repo in the repository index (specifically, to the "summary", "commit" and "tree" pages). Default value: "0". enable-index-owner:: Flag which, when set to "1", will make cgit display the owner of each repo in the repository index. Default value: "1". enable-log-filecount:: Flag which, when set to "1", will make cgit print the number of modified files for each commit on the repository log page. Default value: "0". enable-log-linecount:: Flag which, when set to "1", will make cgit print the number of added and removed lines for each commit on the repository log page. Default value: "0". enable-mailmap:: Flag which, when set to "1", applies the repository's mailmap to every author, committer and tagger shown, so a person who changed name or address appears under one identity in the log, commit, tag, blame and statistics pages, the atom feed and the author search. Only the .mailmap blob at HEAD is read, as git does for a bare repository, and the mailmap.file and mailmap.blob settings are ignored. Default value: "1". See also: "repo.enable-mailmap". enable-plain-email:: Flag which, when set to "0", hides the full author, committer and tagger email addresses wherever they would be shown beside the name. Default value: "1". enable-relative-dates:: Flag which, when set to "1", shows the age columns of the log, refs and index pages as an elapsed time such as "3 days" rather than a calendar date. When set to "0" those columns always show a date, formatted according to "date-format". Default value: "1". enable-remote-branches:: Flag which, when set to "1", will make cgit display remote branches in the summary and refs views. Default value: "0". See also: "repo.enable-remote-branches". enable-subject-links:: Flag which, when set to "1", will make cgit use the subject of the parent commit as link text when generating links to parent commits in commit view. Default value: "0". See also: "repo.enable-subject-links". enable-trailers:: Flag which, when set to "1", makes the commit page split the trailer block, the Signed-off-by lines and their kin, off the end of the commit message and show it as a table under the message. The block is found the way git finds it for "git interpret-trailers": the last paragraph is taken when every line in it is a trailer, or when it holds a Signed-off-by and at least a quarter of its lines are trailers. Default value: "0". See also: "trailer-filter", "repo.enable-trailers". enable-tree-group-dirs:: Flag which, when set to "1", makes the tree view list all directories first, sorted, followed by the files. When set to "0", entries appear in git's own order, with directories and files intermixed by name. Default value: "0". enable-tree-linenumbers:: Flag which, when set to "1", will make cgit generate linenumber links for plaintext blobs printed in the tree view. Default value: "1". favicon:: Url used as link to the icon for cgit. Any path works, but keeping the value "/favicon.ico" is still worthwhile, since clients that do not parse the page head probe that path directly. Default value: "/favicon.ico". footer:: The content of the file specified with this option will be included verbatim at the bottom of all pages (it replaces the standard "generated by..." message). Default value: none. head-include:: The content of the file specified with this option will be included verbatim in the html HEAD section on all pages. Default value: none. header:: The content of the file specified with this option will be included verbatim at the top of all pages. Default value: none. include:: Name of a configfile to include before the rest of the current configfile is parsed. Includes may nest eight levels deep, and anything deeper is ignored. Default value: none. See also: "Macro expansion". js:: Url which specifies the javascript script document to include in all cgit pages. Default value: "/cgit.js". Setting this to an empty string will disable generation of the link to this file in the head section. local-time:: Flag which, if set to "1", makes cgit print commit and tag times in the servers timezone. Default value: "0". See also: "date-format". logo:: Url which specifies the source of an image which will be used as a logo on all cgit pages. Default value: "/cgit.png". logo-link:: Url loaded when clicking on the cgit logo image. If unspecified the calculated url of the repository index page will be used. Default value: none. max-atom-items:: Specifies the number of items to display in atom feeds view. Default value: "10". max-blob-size:: Specifies the maximum size in KBytes of a blob that cgit will read into memory to serve. It caps both the HTML blob view and the raw "plain" and "blob" output, and a larger object is refused rather than loaded whole. Default value: "10240" (10 MB). Set to "0" to disable the limit. max-commit-count:: Specifies the number of entries to list per page in "log" view. Default value: "50". max-diff-files:: If a commit changes more files than this, the "commit" and "diff" views show only the diffstat, where each file links to its own diff page. The "rawdiff" and "patch" views are never limited. Default value: "200". Set to "0" to always render every file inline. max-diff-lines:: If a single file's diff spans more lines than this, the whole-commit views print a note in its place linking to the file's own diff page, which always renders in full. Default value: "1000". Set to "0" to always render oversized files inline. max-message-length:: Specifies the maximum number of commit message characters to display in "log" view. Default value: "80". max-patch-count:: Specifies the maximum number of commits emitted as a series by the "patch" view when an explicit revision range is requested. A single commit is unaffected. Default value: "50". Set to "0" for no limit. max-ref-count:: Specifies the number of branches and tags to list per section on the "refs" view, and per page on the dedicated branch and tag pages that its overflow links lead to. Default value: "200". Set to "0" to list every ref on one page. max-repo-count:: Specifies the number of entries to list per page on the repository index page. A value of "0" or less shows all repositories without limitation. Default value: "50". max-repodesc-length:: Specifies the maximum number of repo description characters to display on the repository index page. Default value: "80". max-stats:: Enable the statistics page, which holds the commits-per-author table, and set the coarsest period it offers. Valid values are "week", "month", "quarter" and "year", each of which also offers the finer periods before it. If unspecified, statistics are disabled. Default value: none. See also: "repo.max-stats". mimetype-file:: Specifies the file to use for automatic mimetype lookup. If specified then this field is used as a fallback when no "mimetype." match is found. If unspecified then no such lookup is performed. The typical file to use on a Linux system is /etc/mime.types. The format of the file must comply to: - a comment line is an empty line or a line starting with a hash (#), optionally preceded by whitespace - a non-comment line starts with the mimetype (like image/png), followed by one or more file extensions (like jpg), all separated by whitespace Default value: none. See also: "mimetype.". mimetype.:: Set the mimetype for the specified filename extension. This is used by the `plain` command when returning blob content. module-link:: Text which will be used as the formatstring for a hyperlink when a submodule is printed in a directory listing. The arguments for the formatstring are the name of the submodule directory and the SHA1 of the submodule commit. Default value: none. project-list:: A list of subdirectories inside of scan-path, relative to it, that should be loaded as git repositories. This must be defined prior to scan-path. Default value: none. See also: scan-path, "Macro expansion". readme:: Text which will be used as default value for "repo.readme". Multiple config keys may be specified, and cgit will use the first found file in this list. This is useful in conjunction with scan-path. Default value: none. See also: scan-path, repo.readme. remove-suffix:: If set to "1" and scan-path is enabled, if any repositories are found with a suffix of ".git", this suffix will be removed for the url and name. This must be defined prior to scan-path. Default value: "0". See also: scan-path. rename-limit:: Maximum number of files to consider when detecting renames. The value "-1" uses the compiletime value in git (for further info, look at `man git-diff`). Default value: "-1". repository-sort:: The way in which repositories in each section are sorted. Valid values are "name" for sorting by the repo name or "age" for sorting by the most recently updated repository. Default value: "name". See also: section, case-sensitive-sort, section-sort. robots:: Text used as content for the "robots" meta-tag. Default value: "index, nofollow". root-desc:: Text printed below the heading on the repository index page. Default value: "a fast webinterface for the git dscm". root-readme:: The content of the file specified with this option will be included verbatim below the "about" link on the repository index page. Default value: none. root-title:: Text printed as heading on the repository index page. Default value: "Git repository browser". scan-hidden-path:: If set to "1" and scan-path is enabled, scan-path will recurse into directories whose name starts with a period ('.'). Otherwise, scan-path will stay away from such directories (considered as "hidden"). Note that this does not apply to the ".git" directory in non-bare repos. This must be defined prior to scan-path. Default value: "0". See also: scan-path. scan-path:: A path which will be scanned for repositories. If caching is enabled, the result will be cached as a cgitrc include-file in the cache directory. If project-list has been defined prior to scan-path, scan-path loads only the directories listed in the file pointed to by project-list. A repository containing a file named "noweb" is skipped, the reverse of what "strict-export" checks. Be advised that only the global settings taken before the scan-path directive will be applied to each repository. That holds for every setting a repository inherits, among them section, snapshots, readme, the filters and the enable flags, not only the entries that say so explicitly. Default value: none. See also: cache-scan-ttl, project-list, strict-export, "Macro expansion". section:: The name of the current repository section. All repositories defined after this option will inherit the current section name. Default value: none. section-from-path:: A number which, if defined prior to scan-path, specifies how many path elements from each repo path to use as a default section name. If negative, cgit will discard the specified number of path elements above the repo directory. Default value: "0". section-sort:: Flag which, when set to "1", will sort the sections on the repository listing by name, along with the repositories within each section. Set this flag to "0" to preserve the order in the cgitrc file. Default value: "0". See also: section, case-sensitive-sort, repository-sort. side-by-side-diffs:: If set to "1" shows side-by-side diffs instead of unidiffs by default. Default value: "0". snapshots:: Text which specifies the default set of snapshot formats that cgit generates links for. The value is a space-separated list of zero or more of the values "tar", "tar.gz", "tar.bz2", "tar.lz", "tar.xz", "tar.zst" and "zip". The special value "all" enables all snapshot formats. Default value: none. All compressors use default settings. Some settings can be influenced with environment variables, for example set ZSTD_CLEVEL=10 in web server environment for higher (but slower) zstd compression. source-filter:: Specifies a command which will be invoked to format plaintext blobs in the tree view. The command will get the blob content on its STDIN and the name of the blob as its only command line argument. The STDOUT from the command will be included verbatim as the blob contents, i.e. this can be used to implement e.g. syntax highlighting. When no source-filter is configured, cgit serves the text plain. A ready syntax highlighter using the Scintillua lexer collection ships as custom/extensions/syntax-highlight.lua, see the comments in that file for its dependencies. Default value: none. See also: "Filter API". strict-export:: Filename which, if specified, needs to be present within the repository for cgit to allow access to that repository. This can be used to emulate gitweb's EXPORT_OK and STRICT_EXPORT functionality and limit cgit's repositories to match those exported by git-daemon. This option must be defined prior to scan-path. Default value: none. See also: scan-path. summary-branches:: Specifies the number of branches to display in the repository "summary" view. Default value: "10". summary-log:: Specifies the number of log entries to display in the repository "summary" view. Default value: "10". summary-tags:: Specifies the number of tags to display in the repository "summary" view. Default value: "10". trailer-filter:: Specifies a command which will be invoked to format the value of a commit trailer when "enable-trailers" is set. The command will get the trailer key and an origin page string as its command line arguments and the value on its STDIN, and the STDOUT from the command will be included verbatim as the value. Trailers whose value is a name and email address, such as Signed-off-by, go through the email-filter instead, and when no trailer-filter is configured the remaining values go through the commit-filter. A ready filter linking Fixes, Closes and URL values ships as custom/extensions/link-trailers.lua. Default value: none. See also: "Filter API". trust-scan-filters:: Flag which, when set to "1", honours the filter settings in a repository's own cgitrc file and git config found by "scan-path". Those files belong to whoever can push to the repository, and a filter is a command cgit runs, so they are ignored with a warning unless the repositories under the scan are trusted. Filter settings in the main cgitrc, the "repo." form included, never need this. Default value: "0". See also: "scan-path", "enable-git-config". virtual-root:: Url which, if specified, will be used as root for all cgit links. It will also cause cgit to generate 'virtual urls', i.e. urls like '/cgit/tree/README' as opposed to '?url=cgit/tree/README'. Default value: none. Repository settings ------------------- repo.about-filter:: Override the default about-filter. Default value: . See also: "Filter API", "trust-scan-filters". repo.branch-sort:: Flag which, when set to "age", enables date ordering in the branch ref list, and when set to "name" enables ordering by branch name. Default value: . repo.clone-url:: A list of space-separated urls which can be used to clone this repo. Default value: . See also: "Macro expansion". repo.commit-filter:: Override the default commit-filter. Default value: . See also: "Filter API", "trust-scan-filters". repo.commit-sort:: Flag which, when set to "date", enables strict date ordering in the commit log, and when set to "topo" enables strict topological ordering. If unset, the default ordering of "git log" is used. Default value: . repo.defbranch:: The name of the default branch for this repository. If no such branch exists in the repository, the first branch name (when sorted) is used as default instead. Default value: branch pointed to by HEAD, or "master" if there is no suitable HEAD. repo.desc:: The value to show as repository description. When repositories are found by scan-path the description file inside the repository is read as a fallback, unless it still holds git's "Unnamed repository" boilerplate. Default value: "[no description]". repo.email-filter:: Override the default email-filter. Default value: . See also: "Filter API", "trust-scan-filters". repo.enable-blame:: A flag which can be used to override the global setting "enable-blame". Default value: . repo.enable-commit-graph:: A flag which can be used to override the global setting "enable-commit-graph". Default value: . repo.enable-follow-links:: A flag which can be used to override the global setting "enable-follow-links". Default value: . repo.enable-gitmodules-links:: A flag which can be used to override the global setting "enable-gitmodules-links". Default value: . repo.enable-html-serving:: A flag which can be used to override the global setting "enable-html-serving". Default value: . repo.enable-log-filecount:: A flag which can be used to override the global setting "enable-log-filecount". Default value: . repo.enable-log-linecount:: A flag which can be used to override the global setting "enable-log-linecount". Default value: . repo.enable-mailmap:: A flag which can be used to override the global setting "enable-mailmap". Default value: . repo.enable-remote-branches:: A flag which can be used to override the global setting "enable-remote-branches". Default value: . repo.enable-subject-links:: A flag which can be used to override the global setting "enable-subject-links". Default value: . repo.enable-trailers:: A flag which can be used to override the global setting "enable-trailers". Default value: . repo.head-content:: This value will be added verbatim to the html HEAD section of each page displayed for this repo. Default value: none. See also: "head-include". repo.hide:: Flag which, when set to "1", hides the repository from the repository index. The repository can still be accessed by providing a direct path. Default value: "0". See also: "repo.ignore". repo.ignore:: Flag which, when set to "1", ignores the repository. The repository is not shown in the index and cannot be accessed by providing a direct path. Default value: "0". See also: "repo.hide". repo.logo:: Url which specifies the source of an image which will be used as a logo on this repo's pages. Default value: . repo.logo-link:: Url loaded when clicking on the cgit logo image. If unspecified the calculated url of the repository index page will be used. Default value: . repo.max-stats:: Override the default maximum statistics period. Valid values are equal to the values specified for the global "max-stats" setting, and a value of "0" disables the statistics page for this repository. Default value: . repo.module-link:: Text which will be used as the formatstring for a hyperlink when a submodule is printed in a directory listing. The arguments for the formatstring are the name of the submodule directory and the SHA1 of the submodule commit. Default value: . repo.module-link.:: Text which will be used as the formatstring for a hyperlink when a submodule with the specified subdirectory path is printed in a directory listing. The only argument for the formatstring is the SHA1 of the submodule commit. Default value: none. repo.name:: The value to show as repository name. Default value: . repo.owner:: A value used to identify the owner of the repository. When repositories are found by scan-path the name of the repository directory's owner, as recorded in the password database, is used as a fallback. Default value: none. repo.path:: An absolute path to the repository directory. For non-bare repositories this is the .git-directory. Default value: none. repo.readme:: A path (relative to ) which specifies a file to include verbatim as the "About" page for this repo. You may also specify a git refspec by head or by hash by prepending the refspec followed by a colon. For example, "master:docs/readme.mkd". If the value begins with a colon, i.e. ":docs/readme.rst", the head given in the query or the default branch of the repository will be used. Sharing any file will expose that entire directory tree to the "/about/PATH" endpoints, so be sure that there are no non-public files located in the same directory as the readme file. Default value: . repo.section:: Override the current section name for this repository. Default value:
. repo.snapshot-prefix:: Prefix to use for snapshot links instead of the repository basename. For example, the "linux-stable" repository may wish to set this to "linux" so that snapshots are in the format "linux-3.15.4" instead of "linux-stable-3.15.4". Default value: meaning to use the repository basename. repo.snapshots:: A mask of snapshot formats for this repo that cgit generates links for. It is intersected with the global "snapshots" setting, so a repository can withhold formats but never offer one the global setting does not. Default value: . repo.source-filter:: Override the default source-filter. Default value: . See also: "Filter API", "trust-scan-filters". repo.trailer-filter:: Override the default trailer-filter. Default value: . See also: "Filter API", "trust-scan-filters". repo.url:: The relative url used to access the repository. This must be the first setting specified for each repo. Default value: none. Repository-specific cgitrc file ------------------------------- When the option "scan-path" is used to auto-discover git repositories, cgit will try to parse the file "cgitrc" within any found repository. Such a repo-specific config file may contain any of the repo-specific options described above, except "repo.url" and "repo.path". The filter options among them are only honoured when "trust-scan-filters" is set to "1", since the file belongs to whoever can push to the repository. Note: the "repo." prefix is dropped from the option names in repo-specific config files, e.g. "repo.desc" becomes "desc". Filter API ---------- By default, filters are separate processes that are executed each time they are needed. Alternative technologies may be used by prefixing the filter specification with the relevant string. The available values are: 'exec:':: The default "one process per filter" mode. 'lua:':: Executes the script using a built-in Lua interpreter. The script is loaded once per execution of cgit, and may be called multiple times during cgit's lifetime, making it a good choice for repeated filters such as the 'email filter'. It responds to three functions: 'filter_open(argument1, argument2, argument3, ...)':: This is called upon activation of the filter for a particular set of data. 'filter_write(buffer)':: This is called whenever cgit writes data to the webpage. 'filter_close()':: This is called when the current filtering operation is completed. It must return an integer value. Usually 0 indicates success. Additionally, cgit exposes to the Lua the following built-in functions: 'html(str)':: Writes 'str' to the webpage. 'html_txt(str)':: HTML escapes and writes 'str' to the webpage. 'html_attr(str)':: HTML escapes for an attribute and writes 'str' to the webpage. 'html_url_path(str)':: URL escapes for a path and writes 'str' to the webpage. 'html_url_arg(str)':: URL escapes for an argument and writes 'str' to the webpage. 'html_include(file)':: Includes 'file' in webpage. Parameters are provided to filters as follows. about filter:: This filter is given a single parameter: the filename of the source file to filter. The filter can use the filename to determine (for example) the type of syntax to follow when formatting the readme file. The about text that is to be filtered is available on standard input and the filtered text is expected on standard output. auth filter:: The authentication filter receives 12 parameters: - filter action, explained below, which specifies which action the filter is called for - http cookie - http method - http query string - http referer - http path - http host - http https flag - cgit repo - cgit page - cgit url - cgit login url When the filter action is "body", this filter must write to output the HTML for displaying the login form, which POSTs to the login url. When the filter action is "authenticate-cookie", this filter must validate the http cookie and return a 0 if it is invalid or 1 if it is valid, in the exit code / close function. If the filter action is "authenticate-post", this filter receives POST'd parameters on standard input, and should write a complete CGI response, preferably with a 302 redirect, and write to output one or more "Set-Cookie" HTTP headers, each followed by a newline. See `custom/extensions/auth-inline.lua` for a ready to modify example that keeps its user list inline, or `custom/extensions/auth-file.lua` for the same filter reading its users from files on disk. commit filter:: This filter is given no arguments. The commit message text that is to be filtered is available on standard input and the filtered text is expected on standard output. email filter:: This filter is given two parameters: the email address of the relevant author and a string indicating the originating page. The filter will then receive the text string to format on standard input and is expected to write to standard output the formatted text to be included in the page. source filter:: This filter is given a single parameter: the filename of the source file to filter. The filter can use the filename to determine (for example) the syntax highlighting mode. The contents of the source file that is to be filtered is available on standard input and the filtered contents is expected on standard output. trailer filter:: This filter is given two parameters: the key of the trailer being formatted, such as "Fixes", and a string indicating the originating page. The filter will then receive the trailer value, already HTML escaped, on standard input and is expected to write to standard output the formatted value to be included in the page. All filters are handed the following environment variables: - CGIT_REPO_URL (from repo.url) - CGIT_REPO_NAME (from repo.name) - CGIT_REPO_PATH (from repo.path) - CGIT_REPO_OWNER (from repo.owner) - CGIT_REPO_DEFBRANCH (from repo.defbranch) - CGIT_REPO_SECTION (from repo.section) - CGIT_REPO_CLONE_URL (from repo.clone-url) If a setting is not defined for a repository and the corresponding global setting is also not defined (if applicable), then the corresponding environment variable will be unset. Macro expansion --------------- The following cgitrc options support a simple macro expansion feature, where tokens prefixed with "$" are replaced with the value of a similarly named environment variable: - cache-root - include - project-list - scan-path Macro expansion will also happen on the content of $CGIT_CONFIG, if defined. The set of available variables is not fixed by cgit. The options above are expanded while the configuration is parsed, against whatever environment the web server hands the cgit process, so any variable the server sets can be used. A CGI server provides the standard request variables, among them $HTTP_HOST, $HTTPS, $PATH_INFO, $QUERY_STRING, $REQUEST_METHOD, $SCRIPT_NAME, $SERVER_NAME and $SERVER_PORT, and server directives such as SetEnv (Apache), fastcgi_param (nginx) or setenv.add-environment (lighttpd) can add anything else. Note that cgit unsets $HOME and $XDG_CONFIG_HOME before reading its configuration, so those two never expand. One usage of this feature is virtual hosting, which in its simplest form can be accomplished by adding the following line to /etc/cgitrc: include=/etc/cgitrc.d/$HTTP_HOST The following options are expanded later, during request processing, and additionally support the seven CGIT_REPO_* variables defined in "Filter API": - clone-url - repo.clone-url The cache --------- All cache ttl values are in minutes. Negative ttl values indicate that a page type will never expire, and thus the first time a URL is accessed, the result will be cached indefinitely, even if the underlying git repository changes. Conversely, when a ttl value is zero, the cache is disabled for that particular page type. The cache directory holds one file per slot plus transient lock files, all created by cgit itself. Create the directory ahead of time, owned by the account the web server runs cgit as, with mode 0700. cgit creates its files by name without guarding against links planted beside them, so a directory other accounts can write to would let those accounts redirect the writes. A directory other accounts can read exposes every cached page along with the URLs visitors asked for. Signatures ---------- Cgit can host .asc signatures corresponding to various snapshot formats, through use of git notes. For example, the following command may be used to add a signature to a .tar.xz archive: git notes --ref=refs/notes/signatures/tar.xz add -C "$( gpg --output - --armor --detach-sign cgit-1.1.tar.xz | git hash-object -w --stdin )" v1.1 If it is instead desirable to attach a signature of the underlying .tar, this will be linked, as a special case, beside a .tar.* link that does not have its own signature. For example, a signature of a tarball of the latest tag might be added with a similar command: tag="$(git describe --abbrev=0)" git notes --ref=refs/notes/signatures/tar add -C "$( git archive --format tar --prefix "cgit-${tag#v}/" "$tag" | gpg --output - --armor --detach-sign | git hash-object -w --stdin )" "$tag" Since git-archive(1) is expected to produce stable output between versions, this allows one to generate a long-term signature of the contents of a given tag.