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-rw-r--r--cgit.c130
1 files changed, 50 insertions, 80 deletions
diff --git a/cgit.c b/cgit.c
index a83f0be..79e0e43 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,332 +1,302 @@
/* 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 "cmd.h"
static int cgit_prepare_cache(struct cacheitem *item)
{
if (!ctx.repo && ctx.qry.repo) {
ctx.page.title = fmt("%s - %s", ctx.cfg.root_title,
"Bad request");
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
cgit_print_pageheader(&ctx);
cgit_print_error(fmt("Unknown repo: %s", ctx.qry.repo));
cgit_print_docend();
return 0;
}
if (!ctx.repo) {
item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root));
item->ttl = ctx.cfg.cache_root_ttl;
return 1;
}
if (!cgit_cmd) {
item->name = xstrdup(fmt("%s/%s/index.%s.html", ctx.cfg.cache_root,
cache_safe_filename(ctx.repo->url),
cache_safe_filename(ctx.qry.raw)));
item->ttl = ctx.cfg.cache_repo_ttl;
} else {
item->name = xstrdup(fmt("%s/%s/%s/%s.html", ctx.cfg.cache_root,
cache_safe_filename(ctx.repo->url),
ctx.qry.page,
cache_safe_filename(ctx.qry.raw)));
if (ctx.qry.has_symref)
item->ttl = ctx.cfg.cache_dynamic_ttl;
else if (ctx.qry.has_sha1)
item->ttl = ctx.cfg.cache_static_ttl;
else
item->ttl = ctx.cfg.cache_repo_ttl;
}
return 1;
}
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;
info.req_ref = repo->defbranch;
info.first_ref = NULL;
info.match = 0;
for_each_branch_ref(find_current_ref, &info);
if (info.match)
return info.req_ref;
else
return info.first_ref;
}
-static void cgit_print_repo_page()
+static int prepare_repo_cmd(struct cgit_context *ctx)
{
char *tmp;
- int show_search;
unsigned char sha1[20];
int nongit = 0;
- setenv("GIT_DIR", ctx.repo->path, 1);
+ 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);
+ 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;
+ return 1;
}
+ ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
- ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
- show_search = 0;
-
- if (!ctx.qry.head) {
- ctx.qry.head = xstrdup(find_default_branch(ctx.repo));
- ctx.repo->defbranch = ctx.qry.head;
+ if (!ctx->qry.head) {
+ ctx->qry.head = xstrdup(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);
+ 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;
+ 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);
+ 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;
+ return 1;
}
+ return 0;
+}
- if ((cgit_cmd == CMD_SNAPSHOT) && ctx.repo->snapshots) {
- cgit_print_snapshot(ctx.qry.head, ctx.qry.sha1,
- cgit_repobasename(ctx.repo->url),
- ctx.qry.path,
- ctx.repo->snapshots );
+static void process_request(struct cgit_context *ctx)
+{
+ 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 (cgit_cmd == CMD_PATCH) {
- cgit_print_patch(ctx.qry.sha1);
+ if (cmd->want_repo && prepare_repo_cmd(ctx))
return;
- }
- if (cgit_cmd == CMD_BLOB) {
- cgit_print_blob(ctx.qry.sha1, ctx.qry.path);
- return;
+ if (cmd->want_layout) {
+ cgit_print_http_headers(ctx);
+ cgit_print_docstart(ctx);
+ cgit_print_pageheader(ctx);
}
- show_search = (cgit_cmd == CMD_LOG);
- cgit_print_http_headers(&ctx);
- cgit_print_docstart(&ctx);
- if (!cgit_cmd) {
- cgit_print_pageheader(&ctx);
- cgit_print_summary();
- cgit_print_docend();
- return;
- }
+ cmd->fn(ctx);
- cgit_print_pageheader(&ctx);
-
- switch(cgit_cmd) {
- case CMD_LOG:
- cgit_print_log(ctx.qry.sha1, ctx.qry.ofs,
- ctx.cfg.max_commit_count, ctx.qry.grep, ctx.qry.search,
- ctx.qry.path, 1);
- break;
- case CMD_TREE:
- cgit_print_tree(ctx.qry.sha1, ctx.qry.path);
- break;
- case CMD_COMMIT:
- cgit_print_commit(ctx.qry.sha1);
- break;
- case CMD_REFS:
- cgit_print_refs();
- break;
- case CMD_TAG:
- cgit_print_tag(ctx.qry.sha1);
- break;
- case CMD_DIFF:
- cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path);
- break;
- default:
- cgit_print_error("Invalid request");
- }
- cgit_print_docend();
+ if (cmd->want_layout)
+ cgit_print_docend();
}
static long ttl_seconds(long ttl)
{
if (ttl<0)
return 60 * 60 * 24 * 365;
else
return ttl * 60;
}
static void cgit_fill_cache(struct cacheitem *item, int use_cache)
{
int stdout2;
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)");
}
ctx.page.modified = time(NULL);
ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
- if (ctx.repo)
- cgit_print_repo_page();
- else
- cgit_print_repolist();
+ process_request(&ctx);
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");
}
}
static void cgit_check_cache(struct cacheitem *item)
{
int i = 0;
top:
if (++i > ctx.cfg.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, 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, 1);
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)) {
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);
}
}
}
int main(int argc, const char **argv)
{
struct cacheitem item;
const char *cgit_config_env = getenv("CGIT_CONFIG");
cgit_prepare_context(&ctx);
item.st.st_mtime = time(NULL);
cgit_repolist.length = 0;
cgit_repolist.count = 0;
cgit_repolist.repos = NULL;
cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
cgit_global_config_cb);
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);
cgit_parse_query(ctx.qry.raw, cgit_querystring_cb);
if (!cgit_prepare_cache(&item))
return 0;
if (ctx.cfg.nocache) {
cgit_fill_cache(&item, 0);
} else {
cgit_check_cache(&item);
cgit_print_cache(&item);
}
return 0;
}