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cgitrc.5.txt (view raw)

   1:man source:   cgit
   2:man manual:   cgit
   3
   4CGITRC(5)
   5========
   6
   7
   8NAME
   9----
  10cgitrc - runtime configuration for cgit
  11
  12
  13SYNOPSIS
  14--------
  15Cgitrc contains all runtime settings for cgit, including the list of git
  16repositories, formatted as a line-separated list of NAME=VALUE pairs. Blank
  17lines, and lines starting with '#', are ignored.
  18
  19
  20LOCATION
  21--------
  22The default location of cgitrc, defined at compile time, is /etc/cgitrc. At
  23runtime, cgit will consult the environment variable CGIT_CONFIG and, if
  24defined, use its value instead.
  25
  26
  27GLOBAL SETTINGS
  28---------------
  29about-filter::
  30	Specifies a command which will be invoked to format the content of
  31	about pages (both top-level and for each repository). The command will
  32	get the content of the about-file on its STDIN, the name of the file
  33	as the first argument, and the STDOUT from the command will be
  34	included verbatim on the about page. Default value: none. See
  35	also: "FILTER API".
  36
  37agefile::
  38	Specifies a path, relative to each repository path, which can be used
  39	to specify the date and time of the youngest commit in the repository.
  40	The first line in the file is used as input to the "parse_date"
  41	function in libgit. Recommended timestamp-format is "yyyy-mm-dd
  42	hh:mm:ss". You may want to generate this file from a post-receive
  43	hook. Default value: "info/web/last-modified".
  44
  45auth-filter::
  46	Specifies a command that will be invoked for authenticating repository
  47	access. Receives quite a few arguments, and data on both stdin and
  48	stdout for authentication processing. Details follow later in this
  49	document. If no auth-filter is specified, no authentication is
  50	performed. Default value: none. See also: "FILTER API".
  51
  52branch-sort::
  53	Flag which, when set to "age", enables date ordering in the branch ref
  54	list, and when set to "name" enables ordering by branch name. Default
  55	value: "name".
  56
  57cache-about-ttl::
  58	Number which specifies the time-to-live, in minutes, for the cached
  59	version of the repository about page. See also: "CACHE". Default
  60	value: "15".
  61
  62cache-dynamic-ttl::
  63	Number which specifies the time-to-live, in minutes, for the cached
  64	version of repository pages accessed without a fixed SHA1. See also:
  65	"CACHE". Default value: "5".
  66
  67cache-repo-ttl::
  68	Number which specifies the time-to-live, in minutes, for the cached
  69	version of the repository summary page. See also: "CACHE". Default
  70	value: "5".
  71
  72cache-root::
  73	Path used to store the cgit cache entries. Default value:
  74	"/var/cache/cgit". See also: "MACRO EXPANSION".
  75
  76cache-root-ttl::
  77	Number which specifies the time-to-live, in minutes, for the cached
  78	version of the repository index page. See also: "CACHE". Default
  79	value: "5".
  80
  81cache-scanrc-ttl::
  82	Number which specifies the time-to-live, in minutes, for the result
  83	of scanning a path for git repositories. See also: "CACHE". Default
  84	value: "15".
  85
  86case-sensitive-sort::
  87	Sort items in the repo list case sensitively. Default value: "1".
  88	See also: repository-sort, section-sort.
  89
  90cache-size::
  91	The maximum number of entries in the cgit cache. When set to "0",
  92	caching is disabled. See also: "CACHE". Default value: "0"
  93
  94cache-snapshot-ttl::
  95	Number which specifies the time-to-live, in minutes, for the cached
  96	version of snapshots. See also: "CACHE". Default value: "5".
  97
  98cache-static-ttl::
  99	Number which specifies the time-to-live, in minutes, for the cached
 100	version of repository pages accessed with a fixed SHA1. See also:
 101	"CACHE". Default value: -1".
 102
 103clone-prefix::
 104	Space-separated list of common prefixes which, when combined with a
 105	repository url, generates valid clone urls for the repository. This
 106	setting is only used if `repo.clone-url` is unspecified. Default value:
 107	none.
 108
 109clone-url::
 110	Space-separated list of clone-url templates. This setting is only
 111	used if `repo.clone-url` is unspecified. Default value: none. See
 112	also: "MACRO EXPANSION", "FILTER API".
 113
 114commit-filter::
 115	Specifies a command which will be invoked to format commit messages.
 116	The command will get the message on its STDIN, and the STDOUT from the
 117	command will be included verbatim as the commit message, i.e. this can
 118	be used to implement bugtracker integration. Default value: none.
 119	See also: "FILTER API".
 120
 121commit-sort::
 122	Flag which, when set to "date", enables strict date ordering in the
 123	commit log, and when set to "topo" enables strict topological
 124	ordering. If unset, the default ordering of "git log" is used. Default
 125	value: unset.
 126
 127css::
 128	Url which specifies the css document to include in all cgit pages.
 129	Default value: "/cgit.css".
 130
 131email-filter::
 132	Specifies a command which will be invoked to format names and email
 133	address of committers, authors, and taggers, as represented in various
 134	places throughout the cgit interface. This command will receive an
 135	email address and an origin page string as its command line arguments,
 136	and the text to format on STDIN. It is to write the formatted text back
 137	out onto STDOUT. Default value: none. See also: "FILTER API".
 138
 139embedded::
 140	Flag which, when set to "1", will make cgit generate a html fragment
 141	suitable for embedding in other html pages. Default value: none. See
 142	also: "noheader".
 143
 144enable-blame::
 145	Flag which, when set to "1", will allow cgit to provide a "blame" page
 146	for files, and will make it generate links to that page in appropriate
 147	places. Default value: "0".
 148
 149enable-commit-graph::
 150	Flag which, when set to "1", will make cgit print an ASCII-art commit
 151	history graph to the left of the commit messages in the repository
 152	log page. Default value: "0".
 153
 154enable-filter-overrides::
 155	Flag which, when set to "1", allows all filter settings to be
 156	overridden in repository-specific cgitrc files. Default value: none.
 157
 158enable-follow-links::
 159	Flag which, when set to "1", allows users to follow a file in the log
 160	view.  Default value: "0".
 161
 162enable-git-config::
 163	Flag which, when set to "1", will allow cgit to use git config to set
 164	any repo specific settings. This option is used in conjunction with
 165	"scan-path", and must be defined prior, to augment repo-specific
 166	settings. The keys gitweb.owner, gitweb.category, gitweb.description,
 167	and gitweb.homepage will map to the cgit keys repo.owner, repo.section,
 168	repo.desc, and repo.homepage respectively. All git config keys that begin
 169	with "cgit." will be mapped to the corresponding "repo." key in cgit.
 170	Default value: "0". See also: scan-path, section-from-path.
 171
 172enable-http-clone::
 173	If set to "1", cgit will act as a dumb HTTP endpoint for git clones.
 174	You can add "http://$HTTP_HOST$SCRIPT_NAME/$CGIT_REPO_URL" to clone-url
 175	to expose this feature. If you use an alternate way of serving git
 176	repositories, you may wish to disable this. Default value: "1".
 177
 178enable-html-serving::
 179	Flag which, when set to "1", will allow the /plain handler to serve
 180	mimetype headers that result in the file being treated as HTML by the
 181	browser. When set to "0", such file types are returned instead as
 182	text/plain or application/octet-stream. Default value: "0". See also:
 183	"repo.enable-html-serving".
 184
 185enable-index-links::
 186	Flag which, when set to "1", will make cgit generate extra links for
 187	each repo in the repository index (specifically, to the "summary",
 188	"commit" and "tree" pages). Default value: "0".
 189
 190enable-index-owner::
 191	Flag which, when set to "1", will make cgit display the owner of
 192	each repo in the repository index. Default value: "1".
 193
 194enable-log-filecount::
 195	Flag which, when set to "1", will make cgit print the number of
 196	modified files for each commit on the repository log page. Default
 197	value: "0".
 198
 199enable-log-linecount::
 200	Flag which, when set to "1", will make cgit print the number of added
 201	and removed lines for each commit on the repository log page. Default
 202	value: "0".
 203
 204enable-remote-branches::
 205	Flag which, when set to "1", will make cgit display remote branches
 206	in the summary and refs views. Default value: "0". See also:
 207	"repo.enable-remote-branches".
 208
 209enable-subject-links::
 210	Flag which, when set to "1", will make cgit use the subject of the
 211	parent commit as link text when generating links to parent commits
 212	in commit view. Default value: "0". See also:
 213	"repo.enable-subject-links".
 214
 215enable-tree-linenumbers::
 216	Flag which, when set to "1", will make cgit generate linenumber links
 217	for plaintext blobs printed in the tree view. Default value: "1".
 218
 219favicon::
 220	Url used as link to a shortcut icon for cgit. It is suggested to use
 221	the value "/favicon.ico" since certain browsers will ignore other
 222	values. Default value: "/favicon.ico".
 223
 224footer::
 225	The content of the file specified with this option will be included
 226	verbatim at the bottom of all pages (i.e. it replaces the standard
 227	"generated by..." message. Default value: none.
 228
 229head-include::
 230	The content of the file specified with this option will be included
 231	verbatim in the html HEAD section on all pages. Default value: none.
 232
 233header::
 234	The content of the file specified with this option will be included
 235	verbatim at the top of all pages. Default value: none.
 236
 237include::
 238	Name of a configfile to include before the rest of the current config-
 239	file is parsed. Default value: none. See also: "MACRO EXPANSION".
 240
 241local-time::
 242	Flag which, if set to "1", makes cgit print commit and tag times in the
 243	servers timezone. Default value: "0".
 244
 245logo::
 246	Url which specifies the source of an image which will be used as a logo
 247	on all cgit pages. Default value: "/cgit.png".
 248
 249logo-link::
 250	Url loaded when clicking on the cgit logo image. If unspecified the
 251	calculated url of the repository index page will be used. Default
 252	value: none.
 253
 254max-atom-items::
 255	Specifies the number of items to display in atom feeds view. Default
 256	value: "10".
 257
 258max-blob-size::
 259	Specifies the maximum size of a blob to display HTML for in KBytes.
 260	Default value: "0" (limit disabled).
 261
 262max-commit-count::
 263	Specifies the number of entries to list per page in "log" view. Default
 264	value: "50".
 265
 266max-message-length::
 267	Specifies the maximum number of commit message characters to display in
 268	"log" view. Default value: "80".
 269
 270max-repo-count::
 271	Specifies the number of entries to list per page on the	repository
 272	index page. Default value: "50".
 273
 274max-repodesc-length::
 275	Specifies the maximum number of repo description characters to display
 276	on the repository index page. Default value: "80".
 277
 278max-stats::
 279	Set the default maximum statistics period. Valid values are "week",
 280	"month", "quarter" and "year". If unspecified, statistics are
 281	disabled. Default value: none. See also: "repo.max-stats".
 282
 283mimetype.<ext>::
 284	Set the mimetype for the specified filename extension. This is used
 285	by the `plain` command when returning blob content.
 286
 287mimetype-file::
 288	Specifies the file to use for automatic mimetype lookup. If specified
 289	then this field is used as a fallback when no "mimetype.<ext>" match is
 290	found. If unspecified then no such lookup is performed. The typical file
 291	to use on a Linux system is /etc/mime.types. The format of the file must
 292	comply to:
 293	- a comment line is an empty line or a line starting with a hash (#),
 294	  optionally preceded by whitespace
 295	- a non-comment line starts with the mimetype (like image/png), followed
 296	  by one or more file extensions (like jpg), all separated by whitespace
 297	Default value: none. See also: "mimetype.<ext>".
 298
 299module-link::
 300	Text which will be used as the formatstring for a hyperlink when a
 301	submodule is printed in a directory listing. The arguments for the
 302	formatstring are the path and SHA1 of the submodule commit. Default
 303	value: none.
 304
 305noplainemail::
 306	If set to "1" showing full author email addresses will be disabled.
 307	Default value: "0".
 308
 309noheader::
 310	Flag which, when set to "1", will make cgit omit the standard header
 311	on all pages. Default value: none. See also: "embedded".
 312
 313owner-filter::
 314	Specifies a command which will be invoked to format the Owner
 315	column of the main page.  The command will get the owner on STDIN,
 316	and the STDOUT from the command will be included verbatim in the
 317	table.  This can be used to link to additional context such as an
 318	owners home page.  When active this filter is used instead of the
 319	default owner query url.  Default value: none.
 320	See also: "FILTER API".
 321
 322project-list::
 323	A list of subdirectories inside of scan-path, relative to it, that
 324	should loaded as git repositories. This must be defined prior to
 325	scan-path. Default value: none. See also: scan-path, "MACRO
 326	EXPANSION".
 327
 328readme::
 329	Text which will be used as default value for "repo.readme". Multiple
 330	config keys may be specified, and cgit will use the first found file
 331	in this list. This is useful in conjunction with scan-path. Default
 332	value: none. See also: scan-path, repo.readme.
 333
 334remove-suffix::
 335	If set to "1" and scan-path is enabled, if any repositories are found
 336	with a suffix of ".git", this suffix will be removed for the url and
 337	name. This must be defined prior to scan-path. Default value: "0".
 338	See also: scan-path.
 339
 340renamelimit::
 341	Maximum number of files to consider when detecting renames. The value
 342	 "-1" uses the compiletime value in git (for further info, look at
 343	  `man git-diff`). Default value: "-1".
 344
 345repository-sort::
 346	The way in which repositories in each section are sorted. Valid values
 347	are "name" for sorting by the repo name or "age" for sorting by the
 348	most recently updated repository. Default value: "name". See also:
 349	section, case-sensitive-sort, section-sort.
 350
 351robots::
 352	Text used as content for the "robots" meta-tag. Default value:
 353	"index, nofollow".
 354
 355root-desc::
 356	Text printed below the heading on the repository index page. Default
 357	value: "a fast webinterface for the git dscm".
 358
 359root-readme::
 360	The content of the file specified with this option will be included
 361	verbatim below the "about" link on the repository index page. Default
 362	value: none.
 363
 364root-title::
 365	Text printed as heading on the repository index page. Default value:
 366	"Git Repository Browser".
 367
 368scan-hidden-path::
 369	If set to "1" and scan-path is enabled, scan-path will recurse into
 370	directories whose name starts with a period ('.'). Otherwise,
 371	scan-path will stay away from such directories (considered as
 372	"hidden"). Note that this does not apply to the ".git" directory in
 373	non-bare repos. This must be defined prior to scan-path.
 374	Default value: 0. See also: scan-path.
 375
 376scan-path::
 377	A path which will be scanned for repositories. If caching is enabled,
 378	the result will be cached as a cgitrc include-file in the cache
 379	directory. If project-list has been defined prior to scan-path,
 380	scan-path loads only the directories listed in the file pointed to by
 381	project-list. Be advised that only the global settings taken
 382	before the scan-path directive will be applied to each repository.
 383	Default value: none. See also: cache-scanrc-ttl, project-list,
 384	"MACRO EXPANSION".
 385
 386section::
 387	The name of the current repository section - all repositories defined
 388	after this option will inherit the current section name. Default value:
 389	none.
 390
 391section-sort::
 392	Flag which, when set to "1", will sort the sections on the repository
 393	listing by name. Set this flag to "0" if the order in the cgitrc file should
 394	be preserved. Default value: "1". See also: section,
 395	case-sensitive-sort, repository-sort.
 396
 397section-from-path::
 398	A number which, if defined prior to scan-path, specifies how many
 399	path elements from each repo path to use as a default section name.
 400	If negative, cgit will discard the specified number of path elements
 401	above the repo directory. Default value: "0".
 402
 403side-by-side-diffs::
 404	If set to "1" shows side-by-side diffs instead of unidiffs per
 405	default. Default value: "0".
 406
 407snapshots::
 408	Text which specifies the default set of snapshot formats that cgit
 409	generates links for. The value is a space-separated list of zero or
 410	more of the values "tar", "tar.gz", "tar.bz2", "tar.lz", "tar.xz",
 411	"tar.zst" and "zip". The special value "all" enables all snapshot
 412	formats. Default value: none.
 413	All compressors use default settings. Some settings can be influenced
 414	with environment variables, for example set ZSTD_CLEVEL=10 in web
 415	server environment for higher (but slower) zstd compression.
 416
 417source-filter::
 418	Specifies a command which will be invoked to format plaintext blobs
 419	in the tree view. The command will get the blob content on its STDIN
 420	and the name of the blob as its only command line argument. The STDOUT
 421	from the command will be included verbatim as the blob contents, i.e.
 422	this can be used to implement e.g. syntax highlighting. Default value:
 423	none. See also: "FILTER API".
 424
 425summary-branches::
 426	Specifies the number of branches to display in the repository "summary"
 427	view. Default value: "10".
 428
 429summary-log::
 430	Specifies the number of log entries to display in the repository
 431	"summary" view. Default value: "10".
 432
 433summary-tags::
 434	Specifies the number of tags to display in the repository "summary"
 435	view. Default value: "10".
 436
 437strict-export::
 438	Filename which, if specified, needs to be present within the repository
 439	for cgit to allow access to that repository. This can be used to emulate
 440	gitweb's EXPORT_OK and STRICT_EXPORT functionality and limit cgit's
 441	repositories to match those exported by git-daemon. This option must
 442	be defined prior to scan-path.
 443
 444virtual-root::
 445	Url which, if specified, will be used as root for all cgit links. It
 446	will also cause cgit to generate 'virtual urls', i.e. urls like
 447	'/cgit/tree/README' as opposed to '?r=cgit&p=tree&path=README'. Default
 448	value: none.
 449	NOTE: cgit has recently learned how to use PATH_INFO to achieve the
 450	same kind of virtual urls, so this option will probably be deprecated.
 451
 452
 453REPOSITORY SETTINGS
 454-------------------
 455repo.about-filter::
 456	Override the default about-filter. Default value: none. See also:
 457	"enable-filter-overrides". See also: "FILTER API".
 458
 459repo.branch-sort::
 460	Flag which, when set to "age", enables date ordering in the branch ref
 461	list, and when set to "name" enables ordering by branch name. Default
 462	value: "name".
 463
 464repo.clone-url::
 465	A list of space-separated urls which can be used to clone this repo.
 466	Default value: none. See also: "MACRO EXPANSION".
 467
 468repo.commit-filter::
 469	Override the default commit-filter. Default value: none. See also:
 470	"enable-filter-overrides". See also: "FILTER API".
 471
 472repo.commit-sort::
 473	Flag which, when set to "date", enables strict date ordering in the
 474	commit log, and when set to "topo" enables strict topological
 475	ordering. If unset, the default ordering of "git log" is used. Default
 476	value: unset.
 477
 478repo.defbranch::
 479	The name of the default branch for this repository. If no such branch
 480	exists in the repository, the first branch name (when sorted) is used
 481	as default instead. Default value: branch pointed to by HEAD, or
 482	"master" if there is no suitable HEAD.
 483
 484repo.desc::
 485	The value to show as repository description. Default value: none.
 486
 487repo.email-filter::
 488	Override the default email-filter. Default value: none. See also:
 489	"enable-filter-overrides". See also: "FILTER API".
 490
 491repo.enable-blame::
 492	A flag which can be used to disable the global setting
 493	`enable-blame'. Default value: none.
 494
 495repo.enable-commit-graph::
 496	A flag which can be used to disable the global setting
 497	`enable-commit-graph'. Default value: none.
 498
 499repo.enable-html-serving::
 500	A flag which can be used to override the global setting
 501	`enable-html-serving`. Default value: none.
 502
 503repo.enable-log-filecount::
 504	A flag which can be used to disable the global setting
 505	`enable-log-filecount'. Default value: none.
 506
 507repo.enable-log-linecount::
 508	A flag which can be used to disable the global setting
 509	`enable-log-linecount'. Default value: none.
 510
 511repo.enable-remote-branches::
 512	Flag which, when set to "1", will make cgit display remote branches
 513	in the summary and refs views. Default value: <enable-remote-branches>.
 514
 515repo.enable-subject-links::
 516	A flag which can be used to override the global setting
 517	`enable-subject-links'. Default value: none.
 518
 519repo.extra-head-content::
 520	This value will be added verbatim to the head section of each page
 521	displayed for this repo. Default value: none.
 522
 523repo.hide::
 524	Flag which, when set to "1", hides the repository from the repository
 525	index. The repository can still be accessed by providing a direct path.
 526	Default value: "0". See also: "repo.ignore".
 527
 528repo.homepage::
 529	The value to show as repository homepage. Default value: none.
 530
 531repo.ignore::
 532	Flag which, when set to "1", ignores the repository. The repository
 533	is not shown in the index and cannot be accessed by providing a direct
 534	path. Default value: "0". See also: "repo.hide".
 535
 536repo.logo::
 537	Url which specifies the source of an image which will be used as a logo
 538	on this repo's pages. Default value: global logo.
 539
 540repo.logo-link::
 541	Url loaded when clicking on the cgit logo image. If unspecified the
 542	calculated url of the repository index page will be used. Default
 543	value: global logo-link.
 544
 545repo.module-link::
 546	Text which will be used as the formatstring for a hyperlink when a
 547	submodule is printed in a directory listing. The arguments for the
 548	formatstring are the path and SHA1 of the submodule commit. Default
 549	value: <module-link>
 550
 551repo.module-link.<path>::
 552	Text which will be used as the formatstring for a hyperlink when a
 553	submodule with the specified subdirectory path is printed in a
 554	directory listing. The only argument for the formatstring is the SHA1
 555	of the submodule commit. Default value: none.
 556
 557repo.max-stats::
 558	Override the default maximum statistics period. Valid values are equal
 559	to the values specified for the global "max-stats" setting. Default
 560	value: none.
 561
 562repo.name::
 563	The value to show as repository name. Default value: <repo.url>.
 564
 565repo.owner::
 566	A value used to identify the owner of the repository. Default value:
 567	none.
 568
 569repo.owner-filter::
 570	Override the default owner-filter. Default value: none. See also:
 571	"enable-filter-overrides". See also: "FILTER API".
 572
 573repo.path::
 574	An absolute path to the repository directory. For non-bare repositories
 575	this is the .git-directory. Default value: none.
 576
 577repo.readme::
 578	A path (relative to <repo.path>) which specifies a file to include
 579	verbatim as the "About" page for this repo. You may also specify a
 580	git refspec by head or by hash by prepending the refspec followed by
 581	a colon. For example, "master:docs/readme.mkd". If the value begins
 582	with a colon, i.e. ":docs/readme.rst", the default branch of the
 583	repository will be used. Sharing any file will expose that entire
 584	directory tree to the "/about/PATH" endpoints, so be sure that there
 585	are no non-public files located in the same directory as the readme
 586	file. Default value: <readme>.
 587
 588repo.section::
 589	Override the current section name for this repository. Default value:
 590	none.
 591
 592repo.snapshots::
 593	A mask of snapshot formats for this repo that cgit generates links for,
 594	restricted by the global "snapshots" setting. Default value:
 595	<snapshots>.
 596
 597repo.snapshot-prefix::
 598	Prefix to use for snapshot links instead of the repository basename.
 599	For example, the "linux-stable" repository may wish to set this to
 600	"linux" so that snapshots are in the format "linux-3.15.4" instead
 601	of "linux-stable-3.15.4".  Default value: <empty> meaning to use
 602	the repository basename.
 603
 604repo.source-filter::
 605	Override the default source-filter. Default value: none. See also:
 606	"enable-filter-overrides". See also: "FILTER API".
 607
 608repo.url::
 609	The relative url used to access the repository. This must be the first
 610	setting specified for each repo. Default value: none.
 611
 612
 613REPOSITORY-SPECIFIC CGITRC FILE
 614-------------------------------
 615When the option "scan-path" is used to auto-discover git repositories, cgit
 616will try to parse the file "cgitrc" within any found repository. Such a
 617repo-specific config file may contain any of the repo-specific options
 618described above, except "repo.url" and "repo.path". Additionally, the "filter"
 619options are only acknowledged in repo-specific config files when
 620"enable-filter-overrides" is set to "1".
 621
 622Note: the "repo." prefix is dropped from the option names in repo-specific
 623config files, e.g. "repo.desc" becomes "desc".
 624
 625
 626FILTER API
 627----------
 628By default, filters are separate processes that are executed each time they
 629are needed.  Alternative technologies may be used by prefixing the filter
 630specification with the relevant string; available values are:
 631
 632'exec:'::
 633	The default "one process per filter" mode.
 634
 635'lua:'::
 636	Executes the script using a built-in Lua interpreter. The script is
 637	loaded once per execution of cgit, and may be called multiple times
 638	during cgit's lifetime, making it a good choice for repeated filters
 639	such as the 'email filter'. It responds to three functions:
 640
 641	'filter_open(argument1, argument2, argument3, ...)'::
 642		This is called upon activation of the filter for a particular
 643		set of data.
 644	'filter_write(buffer)'::
 645		This is called whenever cgit writes data to the webpage.
 646	'filter_close()'::
 647		This is called when the current filtering operation is
 648		completed. It must return an integer value. Usually 0
 649		indicates success.
 650
 651	Additionally, cgit exposes to the Lua the following built-in functions:
 652
 653	'html(str)'::
 654		Writes 'str' to the webpage.
 655	'html_txt(str)'::
 656		HTML escapes and writes 'str' to the webpage.
 657	'html_attr(str)'::
 658		HTML escapes for an attribute and writes "str' to the webpage.
 659	'html_url_path(str)'::
 660		URL escapes for a path and writes 'str' to the webpage.
 661	'html_url_arg(str)'::
 662		URL escapes for an argument and writes 'str' to the webpage.
 663	'html_include(file)'::
 664		Includes 'file' in webpage.
 665
 666
 667Parameters are provided to filters as follows.
 668
 669about filter::
 670	This filter is given a single parameter: the filename of the source
 671	file to filter. The filter can use the filename to determine (for
 672	example) the type of syntax to follow when formatting the readme file.
 673	The about text that is to be filtered is available on standard input
 674	and the filtered text is expected on standard output.
 675
 676auth filter::
 677	The authentication filter receives 12 parameters:
 678	  - filter action, explained below, which specifies which action the
 679	    filter is called for
 680	  - http cookie
 681	  - http method
 682	  - http referer
 683	  - http path
 684	  - http https flag
 685	  - cgit repo
 686	  - cgit page
 687	  - cgit url
 688	  - cgit login url
 689	When the filter action is "body", this filter must write to output the
 690	HTML for displaying the login form, which POSTs to the login url. When
 691	the filter action is "authenticate-cookie", this filter must validate
 692	the http cookie and return a 0 if it is invalid or 1 if it is invalid,
 693	in the exit code / close function. If the filter action is
 694	"authenticate-post", this filter receives POST'd parameters on
 695	standard input, and should write a complete CGI response, preferably
 696	with a 302 redirect, and write to output one or more "Set-Cookie"
 697	HTTP headers, each followed by a newline.
 698
 699	Please see `filters/simple-authentication.lua` for a clear example
 700	script that may be modified.
 701
 702commit filter::
 703	This filter is given no arguments. The commit message text that is to
 704	be filtered is available on standard input and the filtered text is
 705	expected on standard output.
 706
 707email filter::
 708	This filter is given two parameters: the email address of the relevant
 709	author and a string indicating the originating page. The filter will
 710	then receive the text string to format on standard input and is
 711	expected to write to standard output the formatted text to be included
 712	in the page.
 713
 714owner filter::
 715	This filter is given no arguments.  The owner text is available on
 716	standard input and the filter is expected to write to standard
 717	output.  The output is included in the Owner column.
 718
 719source filter::
 720	This filter is given a single parameter: the filename of the source
 721	file to filter. The filter can use the filename to determine (for
 722	example) the syntax highlighting mode. The contents of the source
 723	file that is to be filtered is available on standard input and the
 724	filtered contents is expected on standard output.
 725
 726
 727All filters are handed the following environment variables:
 728
 729- CGIT_REPO_URL (from repo.url)
 730- CGIT_REPO_NAME (from repo.name)
 731- CGIT_REPO_PATH (from repo.path)
 732- CGIT_REPO_OWNER (from repo.owner)
 733- CGIT_REPO_DEFBRANCH (from repo.defbranch)
 734- CGIT_REPO_SECTION (from repo.section)
 735- CGIT_REPO_CLONE_URL (from repo.clone-url)
 736
 737If a setting is not defined for a repository and the corresponding global
 738setting is also not defined (if applicable), then the corresponding
 739environment variable will be unset.
 740
 741
 742MACRO EXPANSION
 743---------------
 744The following cgitrc options support a simple macro expansion feature,
 745where tokens prefixed with "$" are replaced with the value of a similarly
 746named environment variable:
 747
 748- cache-root
 749- include
 750- project-list
 751- scan-path
 752
 753Macro expansion will also happen on the content of $CGIT_CONFIG, if
 754defined.
 755
 756One usage of this feature is virtual hosting, which in its simplest form
 757can be accomplished by adding the following line to /etc/cgitrc:
 758
 759	include=/etc/cgitrc.d/$HTTP_HOST
 760
 761The following options are expanded during request processing, and support
 762the environment variables defined in "FILTER API":
 763
 764- clone-url
 765- repo.clone-url
 766
 767
 768CACHE
 769-----
 770
 771All cache ttl values are in minutes. Negative ttl values indicate that a page
 772type will never expire, and thus the first time a URL is accessed, the result
 773will be cached indefinitely, even if the underlying git repository changes.
 774Conversely, when a ttl value is zero, the cache is disabled for that
 775particular page type, and the page type is never cached.
 776
 777SIGNATURES
 778----------
 779
 780Cgit can host .asc signatures corresponding to various snapshot formats,
 781through use of git notes. For example, the following command may be used to
 782add a signature to a .tar.xz archive:
 783
 784    git notes --ref=refs/notes/signatures/tar.xz add -C "$(
 785	gpg --output - --armor --detach-sign cgit-1.1.tar.xz |
 786	git hash-object -w --stdin
 787    )" v1.1
 788
 789If it is instead desirable to attach a signature of the underlying .tar, this
 790will be linked, as a special case, beside a .tar.* link that does not have its
 791own signature. For example, a signature of a tarball of the latest tag might
 792be added with a similar command:
 793
 794    tag="$(git describe --abbrev=0)"
 795    git notes --ref=refs/notes/signatures/tar add -C "$(
 796        git archive --format tar --prefix "cgit-${tag#v}/" "$tag" |
 797        gpg --output - --armor --detach-sign |
 798        git hash-object -w --stdin
 799    )" "$tag"
 800
 801Since git-archive(1) is expected to produce stable output between versions,
 802this allows one to generate a long-term signature of the contents of a given
 803tag.
 804
 805EXAMPLE CGITRC FILE
 806-------------------
 807
 808....
 809# Enable caching of up to 1000 output entries
 810cache-size=1000
 811
 812
 813# Specify some default clone urls using macro expansion
 814clone-url=git://foo.org/$CGIT_REPO_URL git@foo.org:$CGIT_REPO_URL
 815
 816# Specify the css url
 817css=/css/cgit.css
 818
 819
 820# Show owner on index page
 821enable-index-owner=1
 822
 823
 824# Allow http transport git clone
 825enable-http-clone=1
 826
 827
 828# Show extra links for each repository on the index page
 829enable-index-links=1
 830
 831
 832# Enable blame page and create links to it from tree page
 833enable-blame=1
 834
 835
 836# Enable ASCII art commit history graph on the log pages
 837enable-commit-graph=1
 838
 839
 840# Show number of affected files per commit on the log pages
 841enable-log-filecount=1
 842
 843
 844# Show number of added/removed lines per commit on the log pages
 845enable-log-linecount=1
 846
 847
 848# Sort branches by date
 849branch-sort=age
 850
 851
 852# Add a cgit favicon
 853favicon=/favicon.ico
 854
 855
 856# Use a custom logo
 857logo=/img/mylogo.png
 858
 859
 860# Enable statistics per week, month and quarter
 861max-stats=quarter
 862
 863
 864# Set the title and heading of the repository index page
 865root-title=example.com git repositories
 866
 867
 868# Set a subheading for the repository index page
 869root-desc=tracking the foobar development
 870
 871
 872# Include some more info about example.com on the index page
 873root-readme=/var/www/htdocs/about.html
 874
 875
 876# Allow download of tar.gz, tar.bz2 and zip-files
 877snapshots=tar.gz tar.bz2 zip
 878
 879
 880##
 881## List of common mimetypes
 882##
 883
 884mimetype.gif=image/gif
 885mimetype.html=text/html
 886mimetype.jpg=image/jpeg
 887mimetype.jpeg=image/jpeg
 888mimetype.pdf=application/pdf
 889mimetype.png=image/png
 890mimetype.svg=image/svg+xml
 891
 892
 893# Highlight source code with python pygments-based highlighter
 894source-filter=/var/www/cgit/filters/syntax-highlighting.py
 895
 896# Format markdown, restructuredtext, manpages, text files, and html files
 897# through the right converters
 898about-filter=/var/www/cgit/filters/about-formatting.sh
 899
 900##
 901## Search for these files in the root of the default branch of repositories
 902## for coming up with the about page:
 903##
 904readme=:README.md
 905readme=:readme.md
 906readme=:README.mkd
 907readme=:readme.mkd
 908readme=:README.rst
 909readme=:readme.rst
 910readme=:README.html
 911readme=:readme.html
 912readme=:README.htm
 913readme=:readme.htm
 914readme=:README.txt
 915readme=:readme.txt
 916readme=:README
 917readme=:readme
 918readme=:INSTALL.md
 919readme=:install.md
 920readme=:INSTALL.mkd
 921readme=:install.mkd
 922readme=:INSTALL.rst
 923readme=:install.rst
 924readme=:INSTALL.html
 925readme=:install.html
 926readme=:INSTALL.htm
 927readme=:install.htm
 928readme=:INSTALL.txt
 929readme=:install.txt
 930readme=:INSTALL
 931readme=:install
 932
 933
 934##
 935## List of repositories.
 936## PS: Any repositories listed when section is unset will not be
 937##     displayed under a section heading
 938## PPS: This list could be kept in a different file (e.g. '/etc/cgitrepos')
 939##      and included like this:
 940##        include=/etc/cgitrepos
 941##
 942
 943
 944repo.url=foo
 945repo.path=/pub/git/foo.git
 946repo.desc=the master foo repository
 947repo.owner=fooman@example.com
 948repo.readme=info/web/about.html
 949
 950
 951repo.url=bar
 952repo.path=/pub/git/bar.git
 953repo.desc=the bars for your foo
 954repo.owner=barman@example.com
 955repo.readme=info/web/about.html
 956
 957
 958# The next repositories will be displayed under the 'extras' heading
 959section=extras
 960
 961
 962repo.url=baz
 963repo.path=/pub/git/baz.git
 964repo.desc=a set of extensions for bar users
 965
 966repo.url=wiz
 967repo.path=/pub/git/wiz.git
 968repo.desc=the wizard of foo
 969
 970
 971# Add some mirrored repositories
 972section=mirrors
 973
 974
 975repo.url=git
 976repo.path=/pub/git/git.git
 977repo.desc=the dscm
 978
 979
 980repo.url=linux
 981repo.path=/pub/git/linux.git
 982repo.desc=the kernel
 983
 984# Disable adhoc downloads of this repo
 985repo.snapshots=0
 986
 987# Disable line-counts for this repo
 988repo.enable-log-linecount=0
 989
 990# Restrict the max statistics period for this repo
 991repo.max-stats=month
 992....
 993
 994
 995BUGS
 996----
 997Comments currently cannot appear on the same line as a setting; the comment
 998will be included as part of the value. E.g. this line:
 999
1000	robots=index  # allow indexing
1001
1002will generate the following html element:
1003
1004	<meta name='robots' content='index  # allow indexing'/>
1005
1006
1007
1008AUTHOR
1009------
1010Lars Hjemli <hjemli@gmail.com>
1011Jason A. Donenfeld <Jason@zx2c4.com>