cgitsb/cgit.c
Lars Hjemli 1418034e64 Move repo summary functions into ui-summary.c
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
2006-12-11 16:55:33 +01:00

309 lines
7.0 KiB
C

/* 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)
*/
#include "cgit.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;
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;
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;
}
}
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("<tr><td>");
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
html_txt(buf);
html("</td><td>");
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;
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("<h2>Log</h2>");
html("<table class='list'>");
html("<tr><th>Date</th><th>Message</th><th>Author</th></tr>\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("</table>\n");
}
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)){
cgit_print_error(fmt("Bad hex value: %s", hex));
return;
}
if (sha1_object_info(sha1, type, NULL)){
cgit_print_error("Bad object name");
return;
}
buf = read_sha1_file(sha1, type, &size);
if (!buf) {
cgit_print_error("Error reading object");
return;
}
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(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)));
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_docend();
}
static void cgit_fill_cache(struct cacheitem *item)
{
htmlfd = item->fd;
item->st.st_mtime = time(NULL);
if (cgit_query_repo)
cgit_print_repo_page(item);
else
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;
}