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Move functions for repolist output into ui-repolist.c
[ps-cgit] / cgit.c
diff --git a/cgit.c b/cgit.c
index 4c14f7746ad34052c761bd547ae2d6c5d23fec1b..b3ff51293c84f890be0f646e4b4936a0e75b2fab 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -1,54 +1,47 @@
-#include "cgit.h"
-
-static const char cgit_doctype[] =
-"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
-"  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
+/* 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)
+ */
 
 
-static const char cgit_error[] =
-"<div class='error'>%s</div>";
+#include "cgit.h"
 
 
-static const char cgit_lib_error[] =
-"<div class='error'>%s: %s</div>";
+const char cgit_version[] = CGIT_VERSION;
 
 
+int htmlfd = 0;
 
 
-char *cgit_root         = "/var/git";
+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_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;
 
 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_repo   = NULL;
 char *cgit_query_page   = NULL;
 char *cgit_query_head   = NULL;
+char *cgit_query_sha1   = NULL;
 
 
-int cgit_parse_query(char *txt, configfn fn)
-{
-       char *t = txt, *value = NULL, c;
-
-       if (!txt)
-               return 0;
-
-       while((c=*t) != '\0') {
-               if (c=='=') {
-                       *t = '\0';
-                       value = t+1;
-               } else if (c=='&') {
-                       *t = '\0';
-                       (*fn)(txt, value);
-                       txt = t+1;
-                       value = NULL;
-               }
-               t++;
-       }
-       if (t!=txt)
-               (*fn)(txt, value);
-       return 0;
-}
+struct cacheitem cacheitem;
 
 void cgit_global_config_cb(const char *name, const char *value)
 {
 
 void cgit_global_config_cb(const char *name, const char *value)
 {
@@ -82,27 +75,12 @@ void cgit_querystring_cb(const char *name, const char *value)
                cgit_query_repo = xstrdup(value);
        else if (!strcmp(name, "p"))
                cgit_query_page = xstrdup(value);
                cgit_query_repo = xstrdup(value);
        else if (!strcmp(name, "p"))
                cgit_query_page = xstrdup(value);
-       else if (!strcmp(name, "h"))
+       else if (!strcmp(name, "h")) {
                cgit_query_head = xstrdup(value);
                cgit_query_head = xstrdup(value);
-}
-
-char *cgit_repourl(const char *reponame)
-{
-       if (cgit_virtual_root) {
-               return fmt("%s/%s/", cgit_virtual_root, reponame);
-       } else {
-               return fmt("?r=%s", reponame);
-       }
-}
-
-char *cgit_pageurl(const char *reponame, const char *pagename, 
-                  const char *query)
-{
-       if (cgit_virtual_root) {
-               return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame, 
-                          pagename, query);
-       } else {
-               return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
+               cgit_query_has_symref = 1;
+       } else if (!strcmp(name, "id")) {
+               cgit_query_sha1 = xstrdup(value);
+               cgit_query_has_sha1 = 1;
        }
 }
 
        }
 }
 
@@ -136,86 +114,6 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
        return 0;
 }
 
        return 0;
 }
 
-static void cgit_print_docstart(char *title)
-{
-       html("Content-Type: text/html; charset=utf-8\n");
-       html("\n");
-       html(cgit_doctype);
-       html("<html>\n");
-       html("<head>\n");
-       html("<title>");
-       html_txt(title);
-       html("</title>\n");
-       html("<link rel='stylesheet' type='text/css' href='");
-       html_attr(cgit_css);
-       html("'/>\n");
-       html("</head>\n");
-       html("<body>\n");
-}
-
-static void cgit_print_docend()
-{
-       html("</body>\n</html>\n");
-}
-
-static void cgit_print_pageheader(char *title)
-{
-       html("<div id='header'>");
-       htmlf("<a href='%s'>", cgit_logo_link);
-       htmlf("<img id='logo' src='%s'/>\n", cgit_logo);
-       htmlf("</a>");
-       html_txt(title);
-       html("</div>");
-}
-
-static void cgit_print_repolist()
-{
-       DIR *d;
-       struct dirent *de;
-       struct stat st;
-       char *name;
-
-       cgit_print_docstart(cgit_root_title);
-       cgit_print_pageheader(cgit_root_title);
-
-       if (!(d = opendir("."))) {
-               htmlf(cgit_lib_error, "Unable to scan repository directory",
-                     strerror(errno));
-               cgit_print_docend();
-               return;
-       }
-
-       html("<h2>Repositories</h2>\n");
-       html("<table class='list'>");
-       html("<tr><th>Name</th><th>Description</th><th>Owner</th></tr>\n");
-       while ((de = readdir(d)) != NULL) {
-               if (de->d_name[0] == '.')
-                       continue;
-               if (stat(de->d_name, &st) < 0)
-                       continue;
-               if (!S_ISDIR(st.st_mode))
-                       continue;
-
-               cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
-               name = fmt("%s/.git/info/cgit", de->d_name);
-               if (cgit_read_config(name, cgit_repo_config_cb))
-                       continue;
-
-               html("<tr><td>");
-               html_link_open(cgit_repourl(de->d_name), NULL, NULL);
-               html_txt(cgit_repo_name);
-               html_link_close();
-               html("</td><td>");
-               html_txt(cgit_repo_desc);
-               html("</td><td>");
-               html_txt(cgit_repo_owner);
-               html("</td></tr>\n");
-       }
-       closedir(d);
-       html("</table>");
-       cgit_print_docend();
-}
-
 static void cgit_print_branches()
 {
        html("<table class='list'>");
 static void cgit_print_branches()
 {
        html("<table class='list'>");
@@ -291,7 +189,7 @@ static void cgit_print_commit_shortlog(struct commit *commit)
        strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
        html_txt(buf);
        html("</td><td>");
        strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
        html_txt(buf);
        html("</td><td>");
-       char *qry = fmt("h=%s", sha1_to_hex(commit->object.sha1));
+       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);
        char *url = cgit_pageurl(cgit_query_repo, "view", qry);
        html_link_open(url, NULL, NULL);
        html_txt(subject);
@@ -346,18 +244,18 @@ static void cgit_print_object(char *hex)
        unsigned long size;
 
        if (get_sha1_hex(hex, sha1)){
        unsigned long size;
 
        if (get_sha1_hex(hex, sha1)){
-               htmlf(cgit_error, "Bad hex value");
+               cgit_print_error(fmt("Bad hex value: %s", hex));
                return;
        }
 
        if (sha1_object_info(sha1, type, NULL)){
                return;
        }
 
        if (sha1_object_info(sha1, type, NULL)){
-               htmlf(cgit_error, "Bad object name");
+               cgit_print_error("Bad object name");
                return;
        }
 
        buf = read_sha1_file(sha1, type, &size);
        if (!buf) {
                return;
        }
 
        buf = read_sha1_file(sha1, type, &size);
        if (!buf) {
-               htmlf(cgit_error, "Error reading object");
+               cgit_print_error("Error reading object");
                return;
        }
 
                return;
        }
 
@@ -369,42 +267,88 @@ static void cgit_print_object(char *hex)
        html("</pre>");
 }
 
        html("</pre>");
 }
 
-static void cgit_print_repo_page()
+static void cgit_print_repo_page(struct cacheitem *item)
 {
 {
-       if (chdir(cgit_query_repo) || 
-           cgit_read_config(".git/info/cgit", cgit_repo_config_cb)) {
+       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");
                char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-               cgit_print_docstart(title);
+               cgit_print_docstart(title, item);
                cgit_print_pageheader(title);
                cgit_print_pageheader(title);
-               htmlf(cgit_lib_error, "Unable to scan repository",
-                     strerror(errno));
+               cgit_print_error(fmt("Unable to scan repository: %s",
+                                    strerror(errno)));
                cgit_print_docend();
                return;
        }
                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);
        char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
-       cgit_print_docstart(title);
+       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_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_head);
+               cgit_print_object(cgit_query_sha1);
        }
        cgit_print_docend();
 }
 
        }
        cgit_print_docend();
 }
 
-int main(int argc, const char **argv)
+static void cgit_fill_cache(struct cacheitem *item)
 {
 {
-       if (cgit_read_config("/etc/cgitrc", cgit_global_config_cb))
-               die("Error reading config: %d %s", errno, strerror(errno));
-
-       chdir(cgit_root);
-       cgit_parse_query(getenv("QUERY_STRING"), cgit_querystring_cb);
+       htmlfd = item->fd;
+       item->st.st_mtime = time(NULL);
        if (cgit_query_repo)
        if (cgit_query_repo)
-               cgit_print_repo_page();
+               cgit_print_repo_page(item);
        else
        else
-               cgit_print_repolist();
+               cgit_print_repolist(item);
+}
+
+static void cgit_refresh_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",
+                   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 if (cache_expired(item) && cache_lock(item)) {
+               if (cache_expired(item))
+                       cgit_fill_cache(item);
+               cache_unlock(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);
+}
+
+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);
        return 0;
 }
        return 0;
 }
Unnamed repository; edit this file 'description' to name the repository.