/* cgit.c: cgi for the git scm * * Copyright (C) 2006 Lars Hjemli * * 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 "scan-tree.h" const char *cgit_version = CGIT_VERSION; void config_cb(const char *name, const char *value){	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, "logo"))		ctx.cfg.logo = xstrdup(value);	else if (!strcmp(name, "index-header"))		ctx.cfg.index_header = xstrdup(value);	else if (!strcmp(name, "index-info"))		ctx.cfg.index_info = 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, "virtual-root")) {		ctx.cfg.virtual_root = trim_end(value, '/');		if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))			ctx.cfg.virtual_root = "";	} else if (!strcmp(name, "nocache"))		ctx.cfg.nocache = atoi(value);	else if (!strcmp(name, "snapshots"))		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);	else if (!strcmp(name, "enable-index-links"))		ctx.cfg.enable_index_links = 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, "cache-size"))		ctx.cfg.cache_size = atoi(value);	else if (!strcmp(name, "cache-root"))		ctx.cfg.cache_root = xstrdup(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-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, "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-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, "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, "agefile"))		ctx.cfg.agefile = xstrdup(value);	else if (!strcmp(name, "renamelimit"))		ctx.cfg.renamelimit = 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, "local-time"))		ctx.cfg.local_time = atoi(value);	else if (!strcmp(name, "repo.group"))		ctx.cfg.repo_group = xstrdup(value);	else if (!strcmp(name, "repo.url"))		ctx.repo = cgit_add_repo(value);	else if (!strcmp(name, "repo.name"))		ctx.repo->name = xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.path"))		ctx.repo->path = trim_end(value, '/');	else if (ctx.repo && !strcmp(name, "repo.clone-url"))		ctx.repo->clone_url = xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.desc"))		ctx.repo->desc = xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.owner"))		ctx.repo->owner = xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.defbranch"))		ctx.repo->defbranch = xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.snapshots"))		ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */	else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))		ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);	else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))		ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);	else if (ctx.repo && !strcmp(name, "repo.module-link"))		ctx.repo->module_link= xstrdup(value);	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {		if (*value == '/')			ctx.repo->readme = xstrdup(value);		else			ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));	} else if (!strcmp(name, "include"))		parse_configfile(value, config_cb);} static void querystring_cb(const char *name, const char *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")) {		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.sha1 = xstrdup(value);		ctx.qry.has_sha1 = 1;	} else if (!strcmp(name, "id2")) {		ctx.qry.sha2 = xstrdup(value);		ctx.qry.has_sha1 = 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, "mimetype")) {		ctx.qry.mimetype = xstrdup(value);	}} static void prepare_context(struct cgit_context *ctx){	memset(ctx, 0, sizeof(ctx));	ctx->cfg.agefile = "info/web/last-modified";	ctx->cfg.nocache = 0;	ctx->cfg.cache_size = 0;	ctx->cfg.cache_dynamic_ttl = 5;	ctx->cfg.cache_max_create_time = 5;	ctx->cfg.cache_repo_ttl = 5;	ctx->cfg.cache_root = CGIT_CACHE_ROOT;	ctx->cfg.cache_root_ttl = 5;	ctx->cfg.cache_static_ttl = -1;	ctx->cfg.css = "/cgit.css";	ctx->cfg.logo = "/git-logo.png";	ctx->cfg.local_time = 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.module_link = "./?repo=%s&page=commit&id=%s";	ctx->cfg.renamelimit = -1;	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.script_name = CGIT_SCRIPT_NAME;	ctx->cfg.summary_branches = 10;	ctx->cfg.summary_log = 10;	ctx->cfg.summary_tags = 10;	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;} struct refmatch {	char *req_ref;	char *first_ref;	int match;}; int find_current_ref(const char *refname, const unsigned char *sha1,		     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;} 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);	return ref;} static int prepare_repo_cmd(struct cgit_context *ctx){	char *tmp;	unsigned char sha1[20];	int nongit = 0; 	setenv("GIT_DIR", ctx->repo->path, 1);	setup_git_directory_gently(&nongit);	if (nongit) {		ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,				      "config error");		tmp = fmt("Not a git repository: '%s'", ctx->repo->path);		ctx->repo = NULL;		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);		cgit_print_error(tmp);		cgit_print_docend();		return 1;	}	ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc); 	if (!ctx->qry.head) {		ctx->qry.head = find_default_branch(ctx->repo);		ctx->repo->defbranch = ctx->qry.head;	} 	if (!ctx->qry.head) {		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);		cgit_print_error("Repository seems to be empty");		cgit_print_docend();		return 1;	} 	if (get_sha1(ctx->qry.head, sha1)) {		tmp = xstrdup(ctx->qry.head);		ctx->qry.head = ctx->repo->defbranch;		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);		cgit_print_error(fmt("Invalid branch: %s", tmp));		cgit_print_docend();		return 1;	}	return 0;} static void process_request(void *cbdata){	struct cgit_context *ctx = cbdata;	struct cgit_cmd *cmd; 	cmd = cgit_get_cmd(ctx);	if (!cmd) {		ctx->page.title = "cgit error";		ctx->repo = NULL;		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);		cgit_print_error("Invalid request");		cgit_print_docend();		return;	} 	if (cmd->want_repo && !ctx->repo) {		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);		cgit_print_error(fmt("No repository selected"));		cgit_print_docend();		return;	} 	if (ctx->repo && prepare_repo_cmd(ctx))		return; 	if (cmd->want_layout) {		cgit_print_http_headers(ctx);		cgit_print_docstart(ctx);		cgit_print_pageheader(ctx);	} 	cmd->fn(ctx); 	if (cmd->want_layout)		cgit_print_docend();} int cmp_repos(const void *a, const void *b){	const struct cgit_repo *ra = a, *rb = b;	return strcmp(ra->url, rb->url);} void print_repo(struct cgit_repo *repo){	printf("repo.url=%s\n", repo->url);	printf("repo.name=%s\n", repo->name);	printf("repo.path=%s\n", repo->path);	if (repo->owner)		printf("repo.owner=%s\n", repo->owner);	if (repo->desc)		printf("repo.desc=%s\n", repo->desc);	if (repo->readme)		printf("repo.readme=%s\n", repo->readme);	printf("\n");} void print_repolist(struct cgit_repolist *list){	int i; 	for(i = 0; i < list->count; i++)		print_repo(&list->repos[i]);}  static void cgit_parse_args(int argc, const char **argv){	int i;	int scan = 0; 	for (i = 1; i < argc; i++) {		if (!strncmp(argv[i], "--cache=", 8)) {			ctx.cfg.cache_root = xstrdup(argv[i]+8);		}		if (!strcmp(argv[i], "--nocache")) {			ctx.cfg.nocache = 1;		}		if (!strncmp(argv[i], "--query=", 8)) {			ctx.qry.raw = xstrdup(argv[i]+8);		}		if (!strncmp(argv[i], "--repo=", 7)) {			ctx.qry.repo = xstrdup(argv[i]+7);		}		if (!strncmp(argv[i], "--page=", 7)) {			ctx.qry.page = xstrdup(argv[i]+7);		}		if (!strncmp(argv[i], "--head=", 7)) {			ctx.qry.head = xstrdup(argv[i]+7);			ctx.qry.has_symref = 1;		}		if (!strncmp(argv[i], "--sha1=", 7)) {			ctx.qry.sha1 = xstrdup(argv[i]+7);			ctx.qry.has_sha1 = 1;		}		if (!strncmp(argv[i], "--ofs=", 6)) {			ctx.qry.ofs = atoi(argv[i]+6);		}		if (!strncmp(argv[i], "--scan-tree=", 12)) {			scan++;			scan_tree(argv[i] + 12);		}	}	if (scan) {		qsort(cgit_repolist.repos, cgit_repolist.count,			sizeof(struct cgit_repo), cmp_repos);		print_repolist(&cgit_repolist);		exit(0);	}} static int calc_ttl(){	if (!ctx.repo)		return ctx.cfg.cache_root_ttl; 	if (!ctx.qry.page)		return ctx.cfg.cache_repo_ttl; 	if (ctx.qry.has_symref)		return ctx.cfg.cache_dynamic_ttl; 	if (ctx.qry.has_sha1)		return ctx.cfg.cache_static_ttl; 	return ctx.cfg.cache_repo_ttl;} int main(int argc, const char **argv){	const char *cgit_config_env = getenv("CGIT_CONFIG");	const char *path;	char *qry;	int err, ttl; 	prepare_context(&ctx);	cgit_repolist.length = 0;	cgit_repolist.count = 0;	cgit_repolist.repos = NULL; 	if (getenv("SCRIPT_NAME"))		ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));	if (getenv("QUERY_STRING"))		ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));	cgit_parse_args(argc, argv);	parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,			 config_cb);	ctx.repo = NULL;	http_parse_querystring(ctx.qry.raw, querystring_cb); 	/* If virtual-root isn't specified in cgitrc and no url	 * parameter is specified on the querystring, lets pretend	 * that virtualroot equals SCRIPT_NAME and 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).	 */	if (!ctx.cfg.virtual_root && !ctx.qry.url) {		ctx.cfg.virtual_root = ctx.cfg.script_name;		path = getenv("PATH_INFO");		if (path) {			if (path[0] == '/')				path++;			ctx.qry.url = xstrdup(path);			if (ctx.qry.raw) {				qry = ctx.qry.raw;				ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));				free(qry);			} else				ctx.qry.raw = ctx.qry.url;			cgit_parse_url(ctx.qry.url);		}	} 	ttl = calc_ttl();	ctx.page.expires += ttl*60;	if (ctx.cfg.nocache)		ctx.cfg.cache_size = 0;	err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,			    ctx.qry.raw, ttl, process_request, &ctx);	if (err)		cgit_print_error(fmt("Error processing page: %s (%d)",				     strerror(err), err));	return err;}