X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/1418034e642fee67c981b31e4c3eb6e8ae14e303..f3c1a187fe2bc33f8423cd535d5045899699995b:/cgit.c diff --git a/cgit.c b/cgit.c index 300fe46..d0f6905 100644 --- a/cgit.c +++ b/cgit.c @@ -7,263 +7,227 @@ */ #include "cgit.h" +#include "cmd.h" -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; +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; + } -int cgit_query_has_symref = 0; -int cgit_query_has_sha1 = 0; + if (!ctx.repo) { + item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root)); + item->ttl = ctx.cfg.cache_root_ttl; + return 1; + } -char *cgit_querystring = NULL; -char *cgit_query_repo = NULL; -char *cgit_query_page = NULL; -char *cgit_query_head = NULL; -char *cgit_query_sha1 = NULL; + 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 cacheitem cacheitem; +struct refmatch { + char *req_ref; + char *first_ref; + int match; +}; -void cgit_global_config_cb(const char *name, const char *value) +int find_current_ref(const char *refname, const unsigned char *sha1, + int flags, void *cb_data) { - 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); + 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; } -void cgit_repo_config_cb(const char *name, const char *value) +char *find_default_branch(struct cgit_repo *repo) { - 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); + 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; } -void cgit_querystring_cb(const char *name, const char *value) +static void cgit_print_repo_page(struct cacheitem *item) { - 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; + char *tmp; + int show_search; + 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; } -} - -static int get_one_line(char *txt) -{ - char *t; - for(t=txt; *t != '\n' && t != '\0'; t++) - ; - *t = '\0'; - return t-txt-1; -} + ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc); + show_search = 0; -static void cgit_print_commit_shortlog(struct commit *commit) -{ - 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); + if (!ctx.qry.head) { + ctx.qry.head = xstrdup(find_default_branch(ctx.repo)); + ctx.repo->defbranch = ctx.qry.head; } - while((len = get_one_line(h)) > 0) - h += len+2; - - h++; - len = get_one_line(h); - - subject = h; - - html("
| Date | Message | Author |
|---|
");
- html_txt(buf);
- html("");
-}
+ if (cgit_cmd == CMD_BLOB) {
+ cgit_print_blob(item, ctx.qry.sha1, ctx.qry.path);
+ return;
+ }
-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_http_headers(&ctx);
+ cgit_print_docstart(&ctx);
+ if (!cgit_cmd) {
+ cgit_print_pageheader(&ctx);
+ 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(&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();
}
-static void cgit_fill_cache(struct cacheitem *item)
+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)
{
- htmlfd = item->fd;
- item->st.st_mtime = time(NULL);
- if (cgit_query_repo)
+ 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(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");
+ }
}
-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) {
+ if (++i > ctx.cfg.max_lock_attempts) {
die("cgit_refresh_cache: unable to lock %s: %s",
item->name, strerror(errno));
}
@@ -272,13 +236,19 @@ 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 +267,66 @@ 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)) {
+ 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)
{
- cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
- cgit_querystring = xstrdup(getenv("QUERY_STRING"));
- cgit_parse_query(cgit_querystring, cgit_querystring_cb);
- cgit_refresh_cache(&cacheitem);
- cgit_print_cache(&cacheitem);
+ 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;
}