cGit-UI for Git Repositories

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#else
#include <stdint.h>
#endif
#include <stddef.h>   /* offsetof(3) */
#include <dirent.h>
#include <sys/stat.h> /* chmod(2)    */
#include <sys/file.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <limits.h>
#include <string.h>   /* strdup(3)   */
#include <libgen.h>   /* basename(3) */
#include <ctype.h>    /* tolower(3)  */
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include <pwd.h>
#include <grp.h>
#include <stdarg.h>
#include <locale.h>
#include <unistd.h>

#define _GNU_SOURCE
#include <getopt.h>

#include <git2.h>

#include <nls.h>

#include <defs.h>
#include <cscm/bcf.h>

#include <fatal.h>
#include <http.h>
#include <html.h>

#include <dlist.h>
#include <strbuf.h>
#include <repolist.h>
#include <wrapper.h>
#include <system.h>
#include <date.h>

#include <ctx.h>
#include <git-shared.h>
#include <ui-shared.h>
#include <ui-repolist.h>
#include <ui-file.h>
#include <ui-tree.h>
#include <ui-diff.h>
#include <ui-blame.h>
#include <ui-log.h>


static void free_resources( void )
{
  git_libgit2_shutdown();
  if( config ) free_config();
}

int main( int argc, char *argv[] )
{

  __mctx_init();

  setlocale( LC_ALL, "" );
#if ENABLE_NLS == 1
  bindtextdomain( PACKAGE, LOCALEDIR );
  textdomain( PACKAGE );
#endif

  git_libgit2_init();

  cgit_prepare_context();

  /************************
    define error handlers:
   */
   system_fatal = fatal_html;
  wrapper_fatal = fatal_html;
    dlist_fatal = fatal_html;
    rlist_fatal = fatal_html;
     http_fatal = fatal_html;
     html_fatal = fatal_html;
     cgit_fatal = fatal_html;

  if( !(config = read_config()) )
  {
    fatal_html( "cannot read config file: /dev/shm%s", CGIT_SHM_BCF );
    free_resources();
    exit( 1 );
  }

  cgit_parse_query();

  cgit_prepare_template_variables();

  if( ctx.page.status == 404 )
  {
    cgit_print_404_page();
    cgit_release_template_variables();
    free_resources();
    return 0;
  }

  if( !strcmp( ctx.vars.page_type, ptype_repolist ) )
  {
    if( ctx.query.search && *ctx.query.search )
    {
      cgit_search_repo( ctx.query.search );
    }
    cgit_print_repolist_page();
  }
  else if( !strcmp( ctx.vars.page_type, ptype_repo ) )
  {
    if( ctx.query.operation && *ctx.query.operation && !strcmp( ctx.query.operation, "diff" ) )
    {
      cgit_print_diff_page();
    }
    else if( ctx.query.operation && *ctx.query.operation && !strcmp( ctx.query.operation, "log" ) )
    {
      cgit_print_log_page();
    }
    else if( ctx.repo.relative_info.kind == GIT_OBJECT_BLOB )
    {
      if( ctx.query.operation && *ctx.query.operation && !strcmp( ctx.query.operation, "blame" ) )
      {
        cgit_print_blame_page();
      }
      else
      {
        cgit_print_file_page();
      }
    }
    else if( ctx.repo.relative_info.kind == GIT_OBJECT_TREE )
    {
      cgit_print_tree_page();
    }
    else
    {
      cgit_print_repolist_page();
    }
  }

#if 0
  {
    struct strbuf buf  = STRBUF_INIT;

    strbuf_addf( &buf, "        <div class=\"content segment\">\n" );
    strbuf_addf( &buf, "          <div class=\"container\">\n" );
    strbuf_addf( &buf, "            <div class=\"cgit-main-content\">\n" );

    strbuf_addf( &buf, "<pre><code class='language-text'>HTTP_HOST = %s\n", ctx.env.http_host );
    strbuf_addf( &buf, "HTTPS = %s\n", ctx.env.https );
    strbuf_addf( &buf, "NO_HTTP = %s\n", ctx.env.no_http );
    strbuf_addf( &buf, "PATH_INFO = %s\n", ctx.env.path_info );
    strbuf_addf( &buf, "QUERY_STRING = %s\n", ctx.env.query_string );
    strbuf_addf( &buf, "REQUEST_URI = %s\n", ctx.env.request_uri );
    strbuf_addf( &buf, "REQUEST_SCHEME = %s\n", ctx.env.request_scheme );
    strbuf_addf( &buf, "REQUEST_METHOD = %s\n", ctx.env.request_method );
    strbuf_addf( &buf, "SCRIPT_NAME = %s\n", ctx.env.script_name );
    strbuf_addf( &buf, "SERVER_NAME = %s\n", ctx.env.server_name );
    strbuf_addf( &buf, "SERVER_PORT = %s\n", ctx.env.server_port );
    strbuf_addf( &buf, "HTTP_COOKIE = %s\n", ctx.env.http_cookie );
    strbuf_addf( &buf, "CONTENT_LENGTH = %d\n", ctx.env.content_lenght );
    strbuf_addf( &buf, "HTTP_ROOT = %s\n", ctx.env.http_root );

    strbuf_addf( &buf, "\naddition:\n" );
    strbuf_addf( &buf, "DOCUMENT_ROOT = %s\n", getenv("DOCUMENT_ROOT") );
    strbuf_addf( &buf, "DOCUMENT_URI = %s\n", getenv("DOCUMENT_URI") );
    strbuf_addf( &buf, "PATH_TRANSLATED = %s\n", getenv("PATH_TRANSLATED") );
    strbuf_addf( &buf, "SERVER_SOFTWARE = %s\n", getenv("SERVER_SOFTWARE") );
    strbuf_addf( &buf, "SERVER_PROTOCOL = %s\n", getenv("SERVER_PROTOCOL") );
    strbuf_addf( &buf, "SERVER_ADDR = %s\n", getenv("SERVER_ADDR") );
    strbuf_addf( &buf, "REMOTE_ADDR = %s\n", getenv("REMOTE_ADDR") );
    strbuf_addf( &buf, "GATEWAY_INTERFACE = %s\n", getenv("GATEWAY_INTERFACE") );
    strbuf_addf( &buf, "SERVER_PROTOCOL = %s\n", getenv("SERVER_PROTOCOL") );

    strbuf_addf( &buf, "\nctx:\n" );
    strbuf_addf( &buf, "ctx.vars.page_size = '%s'\n", ctx.vars.page_size );
    strbuf_addf( &buf, "ctx.query.ofs = %d;\n", ctx.query.ofs );
    strbuf_addf( &buf, "ctx.query.rev = '%s';\n", ctx.query.rev );
    strbuf_addf( &buf, "ctx.query.revision = '%s';\n", ctx.query.revision );
    strbuf_addf( &buf, "ctx.query.operation = '%s';\n", ctx.query.operation );
    strbuf_addf( &buf, "ctx.query.search = '%s';\n", ctx.query.search );
    strbuf_addf( &buf, "\n" );
    strbuf_addf( &buf, "ctx.repo.name = %s\n", ctx.repo.name );
    strbuf_addf( &buf, "ctx.repo.git_root = %s\n", ctx.repo.git_root );
    strbuf_addf( &buf, "ctx.repo.repo_root = %s\n", ctx.repo.repo_root );
    strbuf_addf( &buf, "ctx.repo.info = {\n" );
    switch( ctx.repo.info.kind )
    {
      case GIT_OBJECT_TREE:
        strbuf_addf( &buf, "  kind = '%s';\n", "tree" );
        break;
      case GIT_OBJECT_BLOB:
        strbuf_addf( &buf, "  kind = '%s';\n", "blob" );
        break;
      default:
        strbuf_addf( &buf, "  kind = '%s';\n", "unknown" );
        break;
    }
    strbuf_addf( &buf, "  revision = '%s';\n", ctx.repo.info.revision );
    strbuf_addf( &buf, "  oid = '%s';\n", ctx.repo.info.oid );
    switch( ctx.repo.info.mode )
    {
      case GIT_FILEMODE_TREE:
        strbuf_addf( &buf, "  mode = '%s';\n", "tree" );
        break;
      case GIT_FILEMODE_BLOB:
        strbuf_addf( &buf, "  mode = '%s';\n", "blob" );
        break;
      case GIT_FILEMODE_BLOB_EXECUTABLE:
        strbuf_addf( &buf, "  mode = '%s';\n", "blob executable" );
        break;
      case GIT_FILEMODE_LINK:
        strbuf_addf( &buf, "  mode = '%s';\n", "link" );
        break;
      default:
        strbuf_addf( &buf, "  mode = '%07o';\n", ctx.repo.info.mode );
        break;
    }
    strbuf_addf( &buf, "  author = '%s';\n", ctx.repo.info.author );
    strbuf_addf( &buf, "  date = %"PRIdMAX";\n", ctx.repo.info.date );
    strbuf_addf( &buf, "  offset = %+05d;\n", ctx.repo.info.offset );
    strbuf_addf( &buf, "  mime = '%s';\n", ctx.repo.info.mime );
    strbuf_addf( &buf, "  lang = '%s';\n", ctx.repo.info.lang );
    strbuf_addf( &buf, "}\n" );

    strbuf_addf( &buf, "ctx.repo.relative_path = %s\n", ctx.repo.relative_path );
    strbuf_addf( &buf, "ctx.repo.relative_info = {\n" );
    switch( ctx.repo.relative_info.kind )
    {
      case GIT_OBJECT_TREE:
        strbuf_addf( &buf, "  kind = '%s';\n", "tree" );
        break;
      case GIT_OBJECT_BLOB:
        strbuf_addf( &buf, "  kind = '%s';\n", "blob" );
        break;
      default:
        strbuf_addf( &buf, "  kind = '%s';\n", "unknown" );
        break;
    }
    strbuf_addf( &buf, "  revision = '%s';\n", ctx.repo.relative_info.revision );
    strbuf_addf( &buf, "  oid = '%s';\n", ctx.repo.relative_info.oid );
    switch( ctx.repo.relative_info.mode )
    {
      case GIT_FILEMODE_TREE:
        strbuf_addf( &buf, "  mode = '%s';\n", "tree" );
        break;
      case GIT_FILEMODE_BLOB:
        strbuf_addf( &buf, "  mode = '%s';\n", "blob" );
        break;
      case GIT_FILEMODE_BLOB_EXECUTABLE:
        strbuf_addf( &buf, "  mode = '%s';\n", "blob executable" );
        break;
      case GIT_FILEMODE_LINK:
        strbuf_addf( &buf, "  mode = '%s';\n", "link" );
        break;
      default:
        strbuf_addf( &buf, "  mode = '%07o';\n", ctx.repo.relative_info.mode );
        break;
    }
    strbuf_addf( &buf, "  author = '%s';\n", ctx.repo.relative_info.author );
    strbuf_addf( &buf, "  date = %"PRIdMAX";\n", ctx.repo.relative_info.date );
    strbuf_addf( &buf, "  offset = %+05d;\n", ctx.repo.relative_info.offset );
    strbuf_addf( &buf, "  mime = '%s';\n", ctx.repo.relative_info.mime );
    strbuf_addf( &buf, "  lang = '%s';\n", ctx.repo.relative_info.lang );
    strbuf_addf( &buf, "}\n" );

    strbuf_addf( &buf, "ctx.repo.relative_href = %s\n", ctx.repo.relative_href );
    strbuf_addf( &buf, "ctx.repo.relative_html = %s\n", ctx.repo.relative_html );

    strbuf_addf( &buf, "ctx.repo.trunk = %s\n", ctx.repo.trunk );
    strbuf_addf( &buf, "ctx.repo.clone_ro_prefix = %s\n", ctx.repo.clone_ro_prefix );
    strbuf_addf( &buf, "ctx.repo.clone_prefix = %s\n", ctx.repo.clone_prefix );
    strbuf_addf( &buf, "ctx.repo.nbranches = %d\n", ctx.repo.nbranches );
    strbuf_addf( &buf, "ctx.repo.ntags = %d\n", ctx.repo.ntags );

    strbuf_addf( &buf, "ctx.vers.git = %s\n", ctx.vers.git );
    strbuf_addf( &buf, "ctx.vers.nginx = %s\n", ctx.vers.nginx );
    strbuf_addf( &buf, "ctx.vers.cgit = %s\n", ctx.vers.cgit );

    strbuf_addf( &buf, "</code></pre>\n" );

    print_config( &buf, config );

    strbuf_addf( &buf, "            </div> <!-- End of cgit-main-content -->\n" );
    strbuf_addf( &buf, "          </div> <!-- End of container -->\n" );
    strbuf_addf( &buf, "        </div> <!-- End of content segment -->\n" );

    ctx.page.size = buf.len;

    strbuf_write( &buf, STDOUT_FILENO );
    strbuf_release( &buf );
  }

#endif

  cgit_release_template_variables();
  free_resources();

  return 0;
}