| -rw-r--r-- | cgit.c | 117 |
1 files changed, 102 insertions, 15 deletions
@@ -1,47 +1,65 @@ #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"; static const char cgit_error[] = "<div class='error'>%s</div>"; static const char cgit_lib_error[] = "<div class='error'>%s: %s</div>"; +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_cache_root = "/var/cache/cgit"; + +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; +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_sha1 = NULL; + +struct cacheitem cacheitem; int cgit_parse_query(char *txt, configfn fn) { - char *t = txt, *value = NULL, c; + char *t, *value = NULL, c; if (!txt) return 0; + t = txt = xstrdup(txt); + 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++; } @@ -73,26 +91,31 @@ void cgit_repo_config_cb(const char *name, const char *value) else if (!strcmp(name, "desc")) cgit_repo_desc = xstrdup(value); else if (!strcmp(name, "owner")) cgit_repo_owner = xstrdup(value); } void cgit_querystring_cb(const char *name, const char *value) { if (!strcmp(name,"r")) 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_has_symref = 1; + } else if (!strcmp(name, "id")) { + cgit_query_sha1 = xstrdup(value); + cgit_query_has_sha1 = 1; + } } 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, @@ -127,27 +150,50 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1, html_txt(buf); html("</td></tr>\n"); } else { html("<tr><td>"); html_txt(buf); html("</td><td>"); htmlf("*** bad ref %s", sha1_to_hex(sha1)); html("</td></tr>\n"); } return 0; } +/* Sun, 06 Nov 1994 08:49:37 GMT */ +static char *http_date(time_t t) +{ + static char day[][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; + static char month[][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Now", "Dec"}; + struct tm *tm = gmtime(&t); + return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday], + tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year, + tm->tm_hour, tm->tm_min, tm->tm_sec); +} + +static int ttl_seconds(int ttl) +{ + if (ttl<0) + return 60 * 60 * 24 * 365; + else + return ttl * 60; +} + static void cgit_print_docstart(char *title) { html("Content-Type: text/html; charset=utf-8\n"); + htmlf("Last-Modified: %s\n", http_date(cacheitem.st.st_mtime)); + htmlf("Expires: %s\n", http_date(cacheitem.st.st_mtime + + ttl_seconds(cacheitem.ttl))); 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"); @@ -166,47 +212,48 @@ static void cgit_print_pageheader(char *title) htmlf("</a>"); html_txt(title); html("</div>"); } static void cgit_print_repolist() { DIR *d; struct dirent *de; struct stat st; char *name; + chdir(cgit_root); 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); + name = fmt("%s/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"); @@ -282,25 +329,25 @@ static void cgit_print_commit_shortlog(struct commit *commit) while((len = get_one_line(h)) > 0) h += len+2; h++; len = get_one_line(h); subject = h; html("<tr><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); html_link_close(); html("</td><td>"); html_txt(author); html("</td></tr>\n"); } static void cgit_print_log(const char *tip, int ofs, int cnt) { struct rev_info rev; @@ -362,49 +409,89 @@ static void cgit_print_object(char *hex) } buf[size] = '\0'; html("<h2>Object view</h2>"); htmlf("sha1=%s<br/>type=%s<br/>size=%i<br/>", hex, type, size); html("<pre>"); html_txt(buf); html("</pre>"); } static void cgit_print_repo_page() { - 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"); cgit_print_docstart(title); cgit_print_pageheader(title); htmlf(cgit_lib_error, "Unable to scan repository", strerror(errno)); 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); 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(); } -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) cgit_print_repo_page(); else cgit_print_repolist(); +} + +static void cgit_refresh_cache(struct cacheitem *item) +{ + top: + if (!cache_lookup(item)) { + if (cache_lock(item)) { + cgit_fill_cache(item); + cache_unlock(item); + } else { + sched_yield(); + goto top; + } + } else if (cache_expired(item)) { + if (cache_lock(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; } |