/* 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" const char cgit_version[] = CGIT_VERSION; static struct repoinfo *cgit_get_repoinfo(char *url){ int i; struct repoinfo *repo; for (i=0; i<cgit_repolist.count; i++) { repo = &cgit_repolist.repos[i]; if (!strcmp(repo->url, url)) return repo; } return NULL;} static int cgit_prepare_cache(struct cacheitem *item){ if (!cgit_query_repo) { item->name = xstrdup(fmt("%s/index.html", cgit_cache_root)); item->ttl = cgit_cache_root_ttl; return 1; } cgit_repo = cgit_get_repoinfo(cgit_query_repo); if (!cgit_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; } if (!cgit_query_page) { item->name = xstrdup(fmt("%s/%s/index.html", cgit_cache_root, cgit_repo->url)); item->ttl = cgit_cache_repo_ttl; } else { item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root, 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_repo_page(struct cacheitem *item){ char *title; int show_search; 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; } title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc); show_search = 0; setenv("GIT_DIR", cgit_repo->path, 1); if (cgit_query_page && !strcmp(cgit_query_page, "log")) show_search = 1; cgit_print_docstart(title, item); cgit_print_pageheader(title, show_search); if (!cgit_query_page) { cgit_print_summary(); } else if (!strcmp(cgit_query_page, "log")) { cgit_print_log(cgit_query_head, cgit_query_ofs, 100, cgit_query_search); } else if (!strcmp(cgit_query_page, "tree")) { cgit_print_tree(cgit_query_sha1, cgit_query_path); } else if (!strcmp(cgit_query_page, "commit")) { cgit_print_commit(cgit_query_sha1); } else if (!strcmp(cgit_query_page, "view")) { cgit_print_view(cgit_query_sha1); } else if (!strcmp(cgit_query_page, "diff")) { cgit_print_diff(cgit_query_sha1, cgit_query_sha2); } cgit_print_docend();} static void cgit_fill_cache(struct cacheitem *item){ static char buf[PATH_MAX]; getcwd(buf, sizeof(buf)); htmlfd = item->fd; item->st.st_mtime = time(NULL); if (cgit_query_repo) cgit_print_repo_page(item); else cgit_print_repolist(item); chdir(buf);} static void cgit_check_cache(struct cacheitem *item){ int i = 0; top: if (++i > cgit_max_lock_attempts) { die("cgit_refresh_cache: unable to lock %s: %s", item->name, strerror(errno)); } if (!cache_exist(item)) { if (!cache_lock(item)) { sleep(1); goto top; } if (!cache_exist(item)) { cgit_fill_cache(item); 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); } else { cache_cancel_lock(item); } }} static void cgit_print_cache(struct cacheitem *item){ static char buf[4096]; ssize_t i; int fd = open(item->name, O_RDONLY); if (fd<0) die("Unable to open cached file %s", item->name); while((i=read(fd, buf, sizeof(buf))) > 0) write(STDOUT_FILENO, buf, i); 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){ 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("/etc/cgitrc", cgit_global_config_cb); if (getenv("QUERY_STRING")) cgit_querystring = xstrdup(getenv("QUERY_STRING")); cgit_parse_args(argc, argv); cgit_parse_query(cgit_querystring, cgit_querystring_cb); if (!cgit_prepare_cache(&item)) return 0; if (cgit_nocache) { item.fd = STDOUT_FILENO; cgit_fill_cache(&item); } else { cgit_check_cache(&item); cgit_print_cache(&item); } return 0;}
/* 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"
const char cgit_version[] = CGIT_VERSION;
static struct repoinfo *cgit_get_repoinfo(char *url)
{
int i;
struct repoinfo *repo;
for (i=0; i<cgit_repolist.count; i++) {
repo = &cgit_repolist.repos[i];
if (!strcmp(repo->url, url))
return repo;
}
return NULL;
}
static int cgit_prepare_cache(struct cacheitem *item)
{
if (!cgit_query_repo) {
item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
item->ttl = cgit_cache_root_ttl;
return 1;
}
cgit_repo = cgit_get_repoinfo(cgit_query_repo);
if (!cgit_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;
}
if (!cgit_query_page) {
item->name = xstrdup(fmt("%s/%s/index.html", cgit_cache_root,
cgit_repo->url));
item->ttl = cgit_cache_repo_ttl;
} else {
item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root,
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_repo_page(struct cacheitem *item)
{
char *title;
int show_search;
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;
}
title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
show_search = 0;
setenv("GIT_DIR", cgit_repo->path, 1);
if (cgit_query_page && !strcmp(cgit_query_page, "log"))
show_search = 1;
cgit_print_docstart(title, item);
cgit_print_pageheader(title, show_search);
if (!cgit_query_page) {
cgit_print_summary();
} else if (!strcmp(cgit_query_page, "log")) {
cgit_print_log(cgit_query_head, cgit_query_ofs, 100, cgit_query_search);
} else if (!strcmp(cgit_query_page, "tree")) {
cgit_print_tree(cgit_query_sha1, cgit_query_path);
} else if (!strcmp(cgit_query_page, "commit")) {
cgit_print_commit(cgit_query_sha1);
} else if (!strcmp(cgit_query_page, "view")) {
cgit_print_view(cgit_query_sha1);
} else if (!strcmp(cgit_query_page, "diff")) {
cgit_print_diff(cgit_query_sha1, cgit_query_sha2);
}
cgit_print_docend();
}
static void cgit_fill_cache(struct cacheitem *item)
{
static char buf[PATH_MAX];
getcwd(buf, sizeof(buf));
htmlfd = item->fd;
item->st.st_mtime = time(NULL);
if (cgit_query_repo)
cgit_print_repo_page(item);
else
cgit_print_repolist(item);
chdir(buf);
}
static void cgit_check_cache(struct cacheitem *item)
{
int i = 0;
top:
if (++i > cgit_max_lock_attempts) {
die("cgit_refresh_cache: unable to lock %s: %s",
item->name, strerror(errno));
}
if (!cache_exist(item)) {
if (!cache_lock(item)) {
sleep(1);
goto top;
}
if (!cache_exist(item)) {
cgit_fill_cache(item);
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);
} else {
cache_cancel_lock(item);
}
}
}
static void cgit_print_cache(struct cacheitem *item)
{
static char buf[4096];
ssize_t i;
int fd = open(item->name, O_RDONLY);
if (fd<0)
die("Unable to open cached file %s", item->name);
while((i=read(fd, buf, sizeof(buf))) > 0)
write(STDOUT_FILENO, buf, i);
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)
{
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("/etc/cgitrc", cgit_global_config_cb);
if (getenv("QUERY_STRING"))
cgit_querystring = xstrdup(getenv("QUERY_STRING"));
cgit_parse_args(argc, argv);
cgit_parse_query(cgit_querystring, cgit_querystring_cb);
if (!cgit_prepare_cache(&item))
return 0;
if (cgit_nocache) {
item.fd = STDOUT_FILENO;
cgit_fill_cache(&item);
} else {
cgit_check_cache(&item);
cgit_print_cache(&item);
}
return 0;
}