X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/1418034e642fee67c981b31e4c3eb6e8ae14e303..a215bf4620113fcefb8dd3442bf3501bd648c463:/cgit.c

diff --git a/cgit.c b/cgit.c
index 300fe46..b943fe5 100644
--- a/cgit.c
+++ b/cgit.c
@@ -10,258 +10,143 @@
 
 const char cgit_version[] = CGIT_VERSION;
 
-int htmlfd = 0;
 
-char *cgit_root         = "/usr/src/git";
-char *cgit_root_title   = "Git repository browser";
-char *cgit_css          = "/cgit.css";
-char *cgit_logo         = "/git-logo.png";
-char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
-char *cgit_virtual_root = NULL;
-
-char *cgit_cache_root   = "/var/cache/cgit";
-
-int cgit_max_lock_attempts     =  5;
-int cgit_cache_root_ttl        =  5;
-int cgit_cache_repo_ttl        =  5;
-int cgit_cache_dynamic_ttl     =  5;
-int cgit_cache_static_ttl      = -1;
-int cgit_cache_max_create_time =  5;
-
-char *cgit_repo_name    = NULL;
-char *cgit_repo_desc    = NULL;
-char *cgit_repo_owner   = NULL;
-
-int cgit_query_has_symref = 0;
-int cgit_query_has_sha1   = 0;
-
-char *cgit_querystring  = NULL;
-char *cgit_query_repo   = NULL;
-char *cgit_query_page   = NULL;
-char *cgit_query_head   = NULL;
-char *cgit_query_sha1   = NULL;
-
-struct cacheitem cacheitem;
-
-void cgit_global_config_cb(const char *name, const char *value)
+static int cgit_prepare_cache(struct cacheitem *item)
 {
-	if (!strcmp(name, "root"))
-		cgit_root = xstrdup(value);
-	else if (!strcmp(name, "root-title"))
-		cgit_root_title = xstrdup(value);
-	else if (!strcmp(name, "css"))
-		cgit_css = xstrdup(value);
-	else if (!strcmp(name, "logo"))
-		cgit_logo = xstrdup(value);
-	else if (!strcmp(name, "logo-link"))
-		cgit_logo_link = xstrdup(value);
-	else if (!strcmp(name, "virtual-root"))
-		cgit_virtual_root = xstrdup(value);
-}
-
-void cgit_repo_config_cb(const char *name, const char *value)
-{
-	if (!strcmp(name, "name"))
-		cgit_repo_name = xstrdup(value);
-	else if (!strcmp(name, "desc"))
-		cgit_repo_desc = xstrdup(value);
-	else if (!strcmp(name, "owner"))
-		cgit_repo_owner = xstrdup(value);
-}
-
-void cgit_querystring_cb(const char *name, const char *value)
-{
-	if (!strcmp(name,"r"))
-		cgit_query_repo = xstrdup(value);
-	else if (!strcmp(name, "p"))
-		cgit_query_page = xstrdup(value);
-	else if (!strcmp(name, "h")) {
-		cgit_query_head = xstrdup(value);
-		cgit_query_has_symref = 1;
-	} else if (!strcmp(name, "id")) {
-		cgit_query_sha1 = xstrdup(value);
-		cgit_query_has_sha1 = 1;
+	if (!cgit_repo && cgit_query_repo) {
+		char *title = fmt("%s - %s", cgit_root_title, "Bad request");
+		cgit_print_docstart(title, item);
+		cgit_print_pageheader(title, 0);
+		cgit_print_error(fmt("Unknown repo: %s", cgit_query_repo));
+		cgit_print_docend();
+		return 0;
 	}
-}
 
-static int get_one_line(char *txt)
-{
-	char *t;
+	if (!cgit_repo) {
+		item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
+		item->ttl = cgit_cache_root_ttl;
+		return 1;
+	}
 
-	for(t=txt; *t != '\n' && t != '\0'; t++)
-		;
-	*t = '\0';
-	return t-txt-1;
+	if (!cgit_cmd) {
+		item->name = xstrdup(fmt("%s/%s/index.%s.html", cgit_cache_root,
+					 cache_safe_filename(cgit_repo->url),
+					 cache_safe_filename(cgit_querystring)));
+		item->ttl = cgit_cache_repo_ttl;
+	} else {
+		item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root,
+					 cache_safe_filename(cgit_repo->url),
+					 cgit_query_page,
+					 cache_safe_filename(cgit_querystring)));
+		if (cgit_query_has_symref)
+			item->ttl = cgit_cache_dynamic_ttl;
+		else if (cgit_query_has_sha1)
+			item->ttl = cgit_cache_static_ttl;
+		else
+			item->ttl = cgit_cache_repo_ttl;
+	}
+	return 1;
 }
 
-static void cgit_print_commit_shortlog(struct commit *commit)
+static void cgit_print_repo_page(struct cacheitem *item)
 {
-	char *h, *t, *p; 
-	char *tree = NULL, *author = NULL, *subject = NULL;
-	int len;
-	time_t sec;
-	struct tm *time;
-	char buf[32];
-
-	h = t = commit->buffer;
-	
-	if (strncmp(h, "tree ", 5))
-		die("Bad commit format: %s", 
-		    sha1_to_hex(commit->object.sha1));
-	
-	len = get_one_line(h);
-	tree = h+5;
-	h += len + 2;
-
-	while (!strncmp(h, "parent ", 7))
-		h += get_one_line(h) + 2;
-	
-	if (!strncmp(h, "author ", 7)) {
-		author = h+7;
-		h += get_one_line(h) + 2;
-		t = author;
-		while(t!=h && *t!='<') 
-			t++;
-		*t='\0';
-		p = t;
-		while(--t!=author && *t==' ')
-			*t='\0';
-		while(++p!=h && *p!='>')
-			;
-		while(++p!=h && !isdigit(*p))
-			;
-
-		t = p;
-		while(++p && isdigit(*p))
-			;
-		*p = '\0';
-		sec = atoi(t);
-		time = gmtime(&sec);
-	}
+	char *title;
+	int show_search;
 
-	while((len = get_one_line(h)) > 0)
-		h += len+2;
-
-	h++;
-	len = get_one_line(h);
-
-	subject = h;
-
-	html("<tr><td>");
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
-	html_txt(buf);
-	html("</td><td>");
-	char *qry = fmt("id=%s", sha1_to_hex(commit->object.sha1));
-	char *url = cgit_pageurl(cgit_query_repo, "view", qry);
-	html_link_open(url, NULL, NULL);
-	html_txt(subject);
-	html_link_close();
-	html("</td><td>");
-	html_txt(author);
-	html("</td></tr>\n");
-}
+	if (!cgit_query_head)
+		cgit_query_head = cgit_repo->defbranch;
 
-static void cgit_print_log(const char *tip, int ofs, int cnt)
-{
-	struct rev_info rev;
-	struct commit *commit;
-	const char *argv[2] = {NULL, tip};
-	int n = 0;
-	
-	init_revisions(&rev, NULL);
-	rev.abbrev = DEFAULT_ABBREV;
-	rev.commit_format = CMIT_FMT_DEFAULT;
-	rev.verbose_header = 1;
-	rev.show_root_diff = 0;
-	setup_revisions(2, argv, &rev, NULL);
-	prepare_revision_walk(&rev);
-
-	html("<h2>Log</h2>");
-	html("<table class='list'>");
-	html("<tr><th>Date</th><th>Message</th><th>Author</th></tr>\n");
-	while ((commit = get_revision(&rev)) != NULL && n++ < 100) {
-		cgit_print_commit_shortlog(commit);
-		free(commit->buffer);
-		commit->buffer = NULL;
-		free_commit_list(commit->parents);
-		commit->parents = NULL;
+	if (chdir(cgit_repo->path)) {
+		title = fmt("%s - %s", cgit_root_title, "Bad request");
+		cgit_print_docstart(title, item);
+		cgit_print_pageheader(title, 0);
+		cgit_print_error(fmt("Unable to scan repository: %s",
+				     strerror(errno)));
+		cgit_print_docend();
+		return;
 	}
-	html("</table>\n");
-}
 
-static void cgit_print_object(char *hex)
-{
-	unsigned char sha1[20];
-	//struct object *object;
-	char type[20];
-	unsigned char *buf;
-	unsigned long size;
-
-	if (get_sha1_hex(hex, sha1)){
-		cgit_print_error(fmt("Bad hex value: %s", hex));
-	        return;
-	}
+	title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
+	show_search = 0;
+	setenv("GIT_DIR", cgit_repo->path, 1);
 
-	if (sha1_object_info(sha1, type, NULL)){
-		cgit_print_error("Bad object name");
+	if ((cgit_cmd == CMD_SNAPSHOT) && cgit_repo->snapshots) {
+		cgit_print_snapshot(item, cgit_query_sha1, "zip",
+				    cgit_repo->url, cgit_query_name);
 		return;
 	}
 
-	buf = read_sha1_file(sha1, type, &size);
-	if (!buf) {
-		cgit_print_error("Error reading object");
+	if (cgit_cmd == CMD_BLOB) {
+		cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
 		return;
 	}
 
-	buf[size] = '\0';
-	html("<h2>Object view</h2>");
-	htmlf("sha1=%s<br/>type=%s<br/>size=%i<br/>", hex, type, size);
-	html("<pre>");
-	html_txt(buf);
-	html("</pre>");
-}
-
-static void cgit_print_repo_page(struct cacheitem *item)
-{
-	if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) || 
-	    cgit_read_config("info/cgit", cgit_repo_config_cb)) {
-		char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title);
-		cgit_print_error(fmt("Unable to scan repository: %s",
-				     strerror(errno)));
+	show_search = (cgit_cmd == CMD_LOG);
+	cgit_print_docstart(title, item);
+	if (!cgit_cmd) {
+		cgit_print_pageheader("summary", show_search);
+		cgit_print_summary();
 		cgit_print_docend();
 		return;
 	}
-	setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
-	char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
-	cgit_print_docstart(title, item);
-	cgit_print_pageheader(title);
-	if (!cgit_query_page)
-		cgit_print_repo_summary();
-	else if (!strcmp(cgit_query_page, "log")) {
-		cgit_print_log(cgit_query_head, 0, 100);
-	} else if (!strcmp(cgit_query_page, "view")) {
-		cgit_print_object(cgit_query_sha1);
+
+	cgit_print_pageheader(cgit_query_page, show_search);
+
+	switch(cgit_cmd) {
+	case CMD_LOG:
+		cgit_print_log(cgit_query_sha1, cgit_query_ofs,
+			       cgit_max_commit_count, cgit_query_search,
+			       cgit_query_path, 1);
+		break;
+	case CMD_TREE:
+		cgit_print_tree(cgit_query_sha1, cgit_query_path);
+		break;
+	case CMD_COMMIT:
+		cgit_print_commit(cgit_query_sha1);
+		break;
+	case CMD_DIFF:
+		cgit_print_diff(cgit_query_sha1, cgit_query_sha2);
+		break;
+	default:
+		cgit_print_error("Invalid request");
 	}
 	cgit_print_docend();
 }
 
-static void cgit_fill_cache(struct cacheitem *item)
+static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
-	htmlfd = item->fd;
+	static char buf[PATH_MAX];
+	int stdout2;
+
+	getcwd(buf, sizeof(buf));
 	item->st.st_mtime = time(NULL);
-	if (cgit_query_repo)
+
+	if (use_cache) {
+		stdout2 = chk_positive(dup(STDOUT_FILENO),
+				       "Preserving STDOUT");
+		chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
+		chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
+	}
+
+	if (cgit_repo)
 		cgit_print_repo_page(item);
 	else
 		cgit_print_repolist(item);
+
+	if (use_cache) {
+		chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");
+		chk_positive(dup2(stdout2, STDOUT_FILENO),
+			     "Restoring original STDOUT");
+		chk_zero(close(stdout2), "Closing temporary STDOUT");
+	}
+
+	chdir(buf);
 }
 
-static void cgit_refresh_cache(struct cacheitem *item)
+static void cgit_check_cache(struct cacheitem *item)
 {
 	int i = 0;
 
-	cache_prepare(item);
  top:
 	if (++i > cgit_max_lock_attempts) {
 		die("cgit_refresh_cache: unable to lock %s: %s",
@@ -272,13 +157,19 @@ static void cgit_refresh_cache(struct cacheitem *item)
 			sleep(1);
 			goto top;
 		}
-		if (!cache_exist(item))
-			cgit_fill_cache(item);
-		cache_unlock(item);
+		if (!cache_exist(item)) {
+			cgit_fill_cache(item, 1);
+			cache_unlock(item);
+		} else {
+			cache_cancel_lock(item);
+		}
 	} else if (cache_expired(item) && cache_lock(item)) {
-		if (cache_expired(item))
-			cgit_fill_cache(item);
-		cache_unlock(item);
+		if (cache_expired(item)) {
+			cgit_fill_cache(item, 1);
+			cache_unlock(item);
+		} else {
+			cache_cancel_lock(item);
+		}
 	}
 }
 
@@ -297,12 +188,65 @@ static void cgit_print_cache(struct cacheitem *item)
 	close(fd);
 }
 
+static void cgit_parse_args(int argc, const char **argv)
+{
+	int i;
+
+	for (i = 1; i < argc; i++) {
+		if (!strncmp(argv[i], "--cache=", 8)) {
+			cgit_cache_root = xstrdup(argv[i]+8);
+		}
+		if (!strcmp(argv[i], "--nocache")) {
+			cgit_nocache = 1;
+		}
+		if (!strncmp(argv[i], "--query=", 8)) {
+			cgit_querystring = xstrdup(argv[i]+8);
+		}
+		if (!strncmp(argv[i], "--repo=", 7)) {
+			cgit_query_repo = xstrdup(argv[i]+7);
+		}
+		if (!strncmp(argv[i], "--page=", 7)) {
+			cgit_query_page = xstrdup(argv[i]+7);
+		}
+		if (!strncmp(argv[i], "--head=", 7)) {
+			cgit_query_head = xstrdup(argv[i]+7);
+			cgit_query_has_symref = 1;
+		}
+		if (!strncmp(argv[i], "--sha1=", 7)) {
+			cgit_query_sha1 = xstrdup(argv[i]+7);
+			cgit_query_has_sha1 = 1;
+		}
+		if (!strncmp(argv[i], "--ofs=", 6)) {
+			cgit_query_ofs = atoi(argv[i]+6);
+		}
+	}
+}
+
 int main(int argc, const char **argv)
 {
-	cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
-	cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+	struct cacheitem item;
+
+	htmlfd = STDOUT_FILENO;
+	item.st.st_mtime = time(NULL);
+	cgit_repolist.length = 0;
+	cgit_repolist.count = 0;
+	cgit_repolist.repos = NULL;
+
+	cgit_read_config(CGIT_CONFIG, cgit_global_config_cb);
+	cgit_repo = NULL;
+	if (getenv("SCRIPT_NAME"))
+		cgit_script_name = xstrdup(getenv("SCRIPT_NAME"));
+	if (getenv("QUERY_STRING"))
+		cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+	cgit_parse_args(argc, argv);
 	cgit_parse_query(cgit_querystring, cgit_querystring_cb);
-	cgit_refresh_cache(&cacheitem);
-	cgit_print_cache(&cacheitem);
+	if (!cgit_prepare_cache(&item))
+		return 0;
+	if (cgit_nocache) {
+		cgit_fill_cache(&item, 0);
+	} else {
+		cgit_check_cache(&item);
+		cgit_print_cache(&item);
+	}
 	return 0;
 }