111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/* cgit.c: cgi for the git scm
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*
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* Copyright (C) 2006 Lars Hjemli
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*
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* Licensed under GNU General Public License v2
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* (see COPYING for full license text)
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*/
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#include "cgit.h"
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const char cgit_version[] = CGIT_VERSION;
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static void cgit_print_repo_page(struct cacheitem *item)
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{
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if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) ||
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cgit_read_config("info/cgit", cgit_repo_config_cb)) {
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char *title = fmt("%s - %s", cgit_root_title, "Bad request");
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cgit_print_docstart(title, item);
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cgit_print_pageheader(title);
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cgit_print_error(fmt("Unable to scan repository: %s",
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strerror(errno)));
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cgit_print_docend();
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return;
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}
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setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
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char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
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cgit_print_docstart(title, item);
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cgit_print_pageheader(title);
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if (!cgit_query_page) {
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cgit_print_summary();
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} else if (!strcmp(cgit_query_page, "log")) {
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cgit_print_log(cgit_query_head, cgit_query_ofs, 100);
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} else if (!strcmp(cgit_query_page, "tree")) {
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cgit_print_tree(cgit_query_sha1);
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} else if (!strcmp(cgit_query_page, "commit")) {
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cgit_print_commit(cgit_query_sha1);
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} else if (!strcmp(cgit_query_page, "view")) {
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cgit_print_view(cgit_query_sha1);
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}
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cgit_print_docend();
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}
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static void cgit_fill_cache(struct cacheitem *item)
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{
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htmlfd = item->fd;
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item->st.st_mtime = time(NULL);
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if (cgit_query_repo)
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cgit_print_repo_page(item);
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else
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cgit_print_repolist(item);
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}
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static void cgit_check_cache(struct cacheitem *item)
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{
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int i = 0;
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cache_prepare(item);
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top:
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if (++i > cgit_max_lock_attempts) {
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die("cgit_refresh_cache: unable to lock %s: %s",
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item->name, strerror(errno));
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}
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if (!cache_exist(item)) {
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if (!cache_lock(item)) {
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sleep(1);
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goto top;
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}
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if (!cache_exist(item)) {
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cgit_fill_cache(item);
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cache_unlock(item);
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} else {
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cache_cancel_lock(item);
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}
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} else if (cache_expired(item) && cache_lock(item)) {
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if (cache_expired(item)) {
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cgit_fill_cache(item);
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cache_unlock(item);
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} else {
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cache_cancel_lock(item);
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}
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}
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}
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static void cgit_print_cache(struct cacheitem *item)
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{
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static char buf[4096];
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ssize_t i;
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int fd = open(item->name, O_RDONLY);
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if (fd<0)
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die("Unable to open cached file %s", item->name);
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while((i=read(fd, buf, sizeof(buf))) > 0)
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write(STDOUT_FILENO, buf, i);
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close(fd);
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}
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int main(int argc, const char **argv)
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{
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struct cacheitem item;
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cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
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cgit_querystring = xstrdup(getenv("QUERY_STRING"));
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cgit_parse_query(cgit_querystring, cgit_querystring_cb);
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cgit_check_cache(&item);
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cgit_print_cache(&item);
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return 0;
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}
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