X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/0d169ada2ba81210ab1191a5f2212662e90db77e..74620f12e4f7e91cb0a0b4ca731e07272d1b65f6:/cgit.c?ds=sidebyside diff --git a/cgit.c b/cgit.c index 4c14f77..b3ff512 100644 --- a/cgit.c +++ b/cgit.c @@ -1,54 +1,47 @@ -#include "cgit.h" - -static const char cgit_doctype[] = -"\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[] = -"
%s
"; +#include "cgit.h" -static const char cgit_lib_error[] = -"
%s: %s
"; +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_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; +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; -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) { @@ -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); - else if (!strcmp(name, "h")) + else if (!strcmp(name, "h")) { 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; } -static void cgit_print_docstart(char *title) -{ - html("Content-Type: text/html; charset=utf-8\n"); - html("\n"); - html(cgit_doctype); - html("\n"); - html("\n"); - html(""); - html_txt(title); - html("\n"); - html("\n"); - html("\n"); - html("\n"); -} - -static void cgit_print_docend() -{ - html("\n\n"); -} - -static void cgit_print_pageheader(char *title) -{ - html(""); -} - -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("

Repositories

\n"); - html(""); - html("\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("\n"); - } - closedir(d); - html("
NameDescriptionOwner
"); - html_link_open(cgit_repourl(de->d_name), NULL, NULL); - html_txt(cgit_repo_name); - html_link_close(); - html(""); - html_txt(cgit_repo_desc); - html(""); - html_txt(cgit_repo_owner); - html("
"); - cgit_print_docend(); -} - static void cgit_print_branches() { html(""); @@ -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("
"); - 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); @@ -346,18 +244,18 @@ static void cgit_print_object(char *hex) 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)){ - htmlf(cgit_error, "Bad object name"); + cgit_print_error("Bad object name"); return; } buf = read_sha1_file(sha1, type, &size); if (!buf) { - htmlf(cgit_error, "Error reading object"); + cgit_print_error("Error reading object"); return; } @@ -369,42 +267,88 @@ static void cgit_print_object(char *hex) html(""); } -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"); - cgit_print_docstart(title); + cgit_print_docstart(title, item); 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; } - + 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_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_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(); + cgit_print_repo_page(item); 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; }