X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/25105d7ecaba474d4b7c364ebb586aac3dfc5abb..a215bf4620113fcefb8dd3442bf3501bd648c463:/cgit.c
diff --git a/cgit.c b/cgit.c
index 09c857c..b943fe5 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,472 +1,174 @@
-#include "cgit.h"
-
-static const char cgit_doctype[] =
-"\n";
-
-static const char cgit_error[] =
-"%s
";
-
-static const char cgit_lib_error[] =
-"%s: %s
";
-
-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";
+/* 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)
+ */
-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;
+#include "cgit.h"
-char *cgit_querystring = NULL;
-char *cgit_query_repo = NULL;
-char *cgit_query_page = NULL;
-char *cgit_query_head = NULL;
-char *cgit_query_sha1 = NULL;
+const char cgit_version[] = CGIT_VERSION;
-struct cacheitem cacheitem;
-int cgit_parse_query(char *txt, configfn fn)
+static int cgit_prepare_cache(struct cacheitem *item)
{
- char *t, *value = NULL, c;
-
- if (!txt)
+ if (!cgit_repo && cgit_query_repo) {
+ char *title = fmt("%s - %s", cgit_root_title, "Bad request");
+ cgit_print_docstart(title, item);
+ cgit_print_pageheader(title, 0);
+ cgit_print_error(fmt("Unknown repo: %s", cgit_query_repo));
+ cgit_print_docend();
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++;
}
- if (t!=txt)
- (*fn)(txt, value);
- return 0;
-}
-
-void cgit_global_config_cb(const char *name, const char *value)
-{
- 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);
-}
-
-void cgit_repo_config_cb(const char *name, const char *value)
-{
- 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);
-}
-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")) {
- 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;
+ if (!cgit_repo) {
+ item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
+ item->ttl = cgit_cache_root_ttl;
+ return 1;
}
-}
-char *cgit_repourl(const char *reponame)
-{
- if (cgit_virtual_root) {
- return fmt("%s/%s/", cgit_virtual_root, reponame);
+ if (!cgit_cmd) {
+ item->name = xstrdup(fmt("%s/%s/index.%s.html", cgit_cache_root,
+ cache_safe_filename(cgit_repo->url),
+ cache_safe_filename(cgit_querystring)));
+ item->ttl = cgit_cache_repo_ttl;
} else {
- return fmt("?r=%s", reponame);
+ item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root,
+ cache_safe_filename(cgit_repo->url),
+ cgit_query_page,
+ cache_safe_filename(cgit_querystring)));
+ if (cgit_query_has_symref)
+ item->ttl = cgit_cache_dynamic_ttl;
+ else if (cgit_query_has_sha1)
+ item->ttl = cgit_cache_static_ttl;
+ else
+ item->ttl = cgit_cache_repo_ttl;
}
+ return 1;
}
-char *cgit_pageurl(const char *reponame, const char *pagename,
- const char *query)
+static void cgit_print_repo_page(struct cacheitem *item)
{
- 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);
- }
-}
-
-static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
- int flags, void *cb_data)
-{
- struct commit *commit;
- char buf[256], *url;
-
- commit = lookup_commit(sha1);
- if (commit && !parse_commit(commit)){
- html("| ");
- url = cgit_pageurl(cgit_query_repo, "log",
- fmt("h=%s", refname));
- html_link_open(url, NULL, NULL);
- strncpy(buf, refname, sizeof(buf));
- html_txt(buf);
- html_link_close();
- html(" | ");
- pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0, buf,
- sizeof(buf), 0, NULL, NULL, 0);
- html_txt(buf);
- html(" |
\n");
- } else {
- html("| ");
- html_txt(buf);
- html(" | ");
- htmlf("*** bad ref %s", sha1_to_hex(sha1));
- html(" |
\n");
- }
- return 0;
-}
+ char *title;
+ int show_search;
-/* 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);
-}
+ if (!cgit_query_head)
+ cgit_query_head = cgit_repo->defbranch;
-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("\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;
-
- 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));
+ if (chdir(cgit_repo->path)) {
+ title = fmt("%s - %s", cgit_root_title, "Bad request");
+ cgit_print_docstart(title, item);
+ cgit_print_pageheader(title, 0);
+ cgit_print_error(fmt("Unable to scan repository: %s",
+ strerror(errno)));
cgit_print_docend();
return;
}
- html("Repositories
\n");
- html("");
- html("| Name | Description | Owner |
|---|
\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/info/cgit", de->d_name);
- if (cgit_read_config(name, cgit_repo_config_cb))
- continue;
-
- html("| ");
- 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(" |
\n");
- }
- closedir(d);
- html("
");
- cgit_print_docend();
-}
+ title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
+ show_search = 0;
+ setenv("GIT_DIR", cgit_repo->path, 1);
-static void cgit_print_branches()
-{
- html("");
- html("| Branch name | Head commit |
|---|
\n");
- for_each_branch_ref(cgit_print_branch_cb, NULL);
- html("
");
-}
-
-static int get_one_line(char *txt)
-{
- char *t;
-
- for(t=txt; *t != '\n' && t != '\0'; t++)
- ;
- *t = '\0';
- return t-txt-1;
-}
-
-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);
- }
-
- while((len = get_one_line(h)) > 0)
- h += len+2;
-
- h++;
- len = get_one_line(h);
-
- subject = h;
-
- html("| ");
- strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
- html_txt(buf);
- html(" | ");
- 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(" | ");
- html_txt(author);
- html(" |
\n");
-}
-
-static void cgit_print_log(const char *tip, int ofs, int cnt)
-{
- struct rev_info rev;
- struct commit *commit;
- const char *argv[2] = {NULL, tip};
- int n = 0;
-
- init_revisions(&rev, NULL);
- rev.abbrev = DEFAULT_ABBREV;
- rev.commit_format = CMIT_FMT_DEFAULT;
- rev.verbose_header = 1;
- rev.show_root_diff = 0;
- setup_revisions(2, argv, &rev, NULL);
- prepare_revision_walk(&rev);
-
- html("Log
");
- html("");
- html("| Date | Message | Author |
|---|
\n");
- while ((commit = get_revision(&rev)) != NULL && n++ < 100) {
- cgit_print_commit_shortlog(commit);
- free(commit->buffer);
- commit->buffer = NULL;
- free_commit_list(commit->parents);
- commit->parents = NULL;
- }
- html("
\n");
-}
-
-static void cgit_print_repo_summary()
-{
- html("");
- html_txt("Repo summary page");
- html("
");
- cgit_print_branches();
-}
-
-static void cgit_print_object(char *hex)
-{
- unsigned char sha1[20];
- //struct object *object;
- char type[20];
- unsigned char *buf;
- unsigned long size;
-
- if (get_sha1_hex(hex, sha1)){
- htmlf(cgit_error, "Bad hex value");
- return;
- }
-
- if (sha1_object_info(sha1, type, NULL)){
- htmlf(cgit_error, "Bad object name");
+ if ((cgit_cmd == CMD_SNAPSHOT) && cgit_repo->snapshots) {
+ cgit_print_snapshot(item, cgit_query_sha1, "zip",
+ cgit_repo->url, cgit_query_name);
return;
}
- buf = read_sha1_file(sha1, type, &size);
- if (!buf) {
- htmlf(cgit_error, "Error reading object");
+ if (cgit_cmd == CMD_BLOB) {
+ cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
return;
}
- buf[size] = '\0';
- html("Object view
");
- htmlf("sha1=%s
type=%s
size=%i
", hex, type, size);
- html("");
- html_txt(buf);
- html("");
-}
-
-static void cgit_print_repo_page()
-{
- 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));
+ show_search = (cgit_cmd == CMD_LOG);
+ cgit_print_docstart(title, item);
+ if (!cgit_cmd) {
+ cgit_print_pageheader("summary", show_search);
+ 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);
- 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(cgit_query_page, show_search);
+
+ switch(cgit_cmd) {
+ case CMD_LOG:
+ cgit_print_log(cgit_query_sha1, cgit_query_ofs,
+ cgit_max_commit_count, cgit_query_search,
+ cgit_query_path, 1);
+ break;
+ case CMD_TREE:
+ cgit_print_tree(cgit_query_sha1, cgit_query_path);
+ break;
+ case CMD_COMMIT:
+ cgit_print_commit(cgit_query_sha1);
+ break;
+ case CMD_DIFF:
+ cgit_print_diff(cgit_query_sha1, cgit_query_sha2);
+ break;
+ default:
+ cgit_print_error("Invalid request");
}
cgit_print_docend();
}
-static void cgit_fill_cache(struct cacheitem *item)
+static void cgit_fill_cache(struct cacheitem *item, int use_cache)
{
- htmlfd = item->fd;
+ static char buf[PATH_MAX];
+ int stdout2;
+
+ getcwd(buf, sizeof(buf));
item->st.st_mtime = time(NULL);
- if (cgit_query_repo)
- cgit_print_repo_page();
+
+ 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)");
+ }
+
+ if (cgit_repo)
+ cgit_print_repo_page(item);
else
- cgit_print_repolist();
+ 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");
+ }
+
+ chdir(buf);
}
-static void cgit_refresh_cache(struct cacheitem *item)
+static void cgit_check_cache(struct cacheitem *item)
{
+ int i = 0;
+
top:
- if (!cache_lookup(item)) {
- if (cache_lock(item)) {
- cgit_fill_cache(item);
+ 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, 1);
cache_unlock(item);
} else {
- sched_yield();
- goto top;
+ cache_cancel_lock(item);
}
- } else if (cache_expired(item)) {
- if (cache_lock(item)) {
- cgit_fill_cache(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);
}
}
}
@@ -486,12 +188,65 @@ 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)) {
+ cgit_cache_root = xstrdup(argv[i]+8);
+ }
+ if (!strcmp(argv[i], "--nocache")) {
+ cgit_nocache = 1;
+ }
+ if (!strncmp(argv[i], "--query=", 8)) {
+ cgit_querystring = xstrdup(argv[i]+8);
+ }
+ if (!strncmp(argv[i], "--repo=", 7)) {
+ cgit_query_repo = xstrdup(argv[i]+7);
+ }
+ if (!strncmp(argv[i], "--page=", 7)) {
+ cgit_query_page = xstrdup(argv[i]+7);
+ }
+ if (!strncmp(argv[i], "--head=", 7)) {
+ cgit_query_head = xstrdup(argv[i]+7);
+ cgit_query_has_symref = 1;
+ }
+ if (!strncmp(argv[i], "--sha1=", 7)) {
+ cgit_query_sha1 = xstrdup(argv[i]+7);
+ cgit_query_has_sha1 = 1;
+ }
+ if (!strncmp(argv[i], "--ofs=", 6)) {
+ cgit_query_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"));
+ struct cacheitem item;
+
+ htmlfd = STDOUT_FILENO;
+ item.st.st_mtime = time(NULL);
+ cgit_repolist.length = 0;
+ cgit_repolist.count = 0;
+ cgit_repolist.repos = NULL;
+
+ cgit_read_config(CGIT_CONFIG, cgit_global_config_cb);
+ cgit_repo = NULL;
+ if (getenv("SCRIPT_NAME"))
+ cgit_script_name = xstrdup(getenv("SCRIPT_NAME"));
+ if (getenv("QUERY_STRING"))
+ cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+ cgit_parse_args(argc, argv);
cgit_parse_query(cgit_querystring, cgit_querystring_cb);
- cgit_refresh_cache(&cacheitem);
- cgit_print_cache(&cacheitem);
+ if (!cgit_prepare_cache(&item))
+ return 0;
+ if (cgit_nocache) {
+ cgit_fill_cache(&item, 0);
+ } else {
+ cgit_check_cache(&item);
+ cgit_print_cache(&item);
+ }
return 0;
}