static ret_t
add_environment (cherokee_handler_cgi_t *cgi,
cherokee_connection_t *conn)
{
ret_t ret;
cherokee_handler_cgi_base_t *cgi_base = HDL_CGI_BASE(cgi);
cherokee_buffer_t *tmp = THREAD_TMP_BUF2(CONN_THREAD(conn));
ret = cherokee_handler_cgi_base_build_envp (HDL_CGI_BASE(cgi), conn);
if (unlikely (ret != ret_ok))
return ret;
/* CONTENT_LENGTH
*/
if (http_method_with_input (conn->header.method)) {
cherokee_buffer_clean (tmp);
cherokee_buffer_add_ullong10 (tmp, conn->post.len);
set_env (cgi_base, "CONTENT_LENGTH", tmp->buf, tmp->len);
}
/* SCRIPT_FILENAME
*/
if (cgi_base->executable.len <= 0)
return ret_error;
set_env (cgi_base, "SCRIPT_FILENAME",
cgi_base->executable.buf,
cgi_base->executable.len);
return ret_ok;
}
static ret_t
process_buffer (cherokee_handler_fcgi_t *hdl, cherokee_buffer_t *inbuf, cherokee_buffer_t *outbuf)
{
ret_t ret;
do {
ret = process_package (hdl, inbuf, outbuf);
} while (ret == ret_eagain);
if (ret == ret_ok) {
if (cherokee_buffer_is_empty (outbuf))
return (HDL_CGI_BASE(hdl)->got_eof) ? ret_eof : ret_eagain;
}
return ret;
}
ret_t
cherokee_handler_cgi_new (cherokee_handler_t **hdl, void *cnt, cherokee_module_props_t *props)
{
int i;
CHEROKEE_NEW_STRUCT (n, handler_cgi);
/* Init the base class
*/
cherokee_handler_cgi_base_init (HDL_CGI_BASE(n), cnt, PLUGIN_INFO_HANDLER_PTR(cgi),
HANDLER_PROPS(props), cherokee_handler_cgi_add_env_pair, read_from_cgi);
/* Virtual methods
*/
MODULE(n)->init = (module_func_init_t) cherokee_handler_cgi_init;
MODULE(n)->free = (module_func_free_t) cherokee_handler_cgi_free;
HANDLER(n)->read_post = (handler_func_read_post_t) cherokee_handler_cgi_read_post;
/* Virtual methods: implemented by handler_cgi_base
*/
HANDLER(n)->add_headers = (handler_func_add_headers_t) cherokee_handler_cgi_base_add_headers;
HANDLER(n)->step = (handler_func_step_t) cherokee_handler_cgi_base_step;
/* Init
*/
n->pipeInput = -1;
n->pipeOutput = -1;
#ifdef _WIN32
n->process = NULL;
n->thread = NULL;
cherokee_buffer_init (&n->envp);
#else
n->pid = -1;
n->envp_last = 0;
for (i=0; i<ENV_VAR_NUM; i++)
n->envp[i] = NULL;
#endif
/* Return the object
*/
*hdl = HANDLER(n);
return ret_ok;
}
ret_t
cherokee_handler_cgi_init (cherokee_handler_cgi_t *cgi)
{
ret_t ret;
cherokee_handler_cgi_base_t *cgi_base = HDL_CGI_BASE(cgi);
cherokee_connection_t *conn = HANDLER_CONN(cgi);
switch (cgi_base->init_phase) {
case hcgi_phase_build_headers:
/* Extracts PATH_INFO and filename from request uri
*/
if (cherokee_buffer_is_empty (&cgi_base->executable)) {
ret = cherokee_handler_cgi_base_extract_path (cgi_base, true);
if (unlikely (ret < ret_ok)) {
return ret;
}
}
/* It has to update the timeout of the connection,
* otherwhise the server will drop it for the CGI
* isn't fast enough
*/
conn->timeout = cherokee_bogonow_now + CGI_TIMEOUT;
cgi_base->init_phase = hcgi_phase_connect;
case hcgi_phase_connect:
/* Launch the CGI
*/
ret = fork_and_execute_cgi_via_spawner(cgi);
if (unlikely (ret != ret_ok)) {
ret = fork_and_execute_cgi(cgi);
if (unlikely (ret != ret_ok)) {
return ret;
}
}
default:
break;
}
TRACE (ENTRIES, "finishing %s\n", "ret_ok");
return ret_ok;
}
static ret_t
fork_and_execute_cgi_win32 (cherokee_handler_cgi_t *cgi)
{
int re;
PROCESS_INFORMATION pi;
STARTUPINFO si;
char *cmd;
cherokee_buffer_t cmd_line = CHEROKEE_BUF_INIT;
cherokee_buffer_t exec_dir = CHEROKEE_BUF_INIT;
cherokee_connection_t *conn = HANDLER_CONN(cgi);
SECURITY_ATTRIBUTES saSecAtr;
HANDLE hProc;
HANDLE hChildStdinRd = INVALID_HANDLE_VALUE;
HANDLE hChildStdinWr = INVALID_HANDLE_VALUE;
HANDLE hChildStdoutRd = INVALID_HANDLE_VALUE;
HANDLE hChildStdoutWr = INVALID_HANDLE_VALUE;
/* Create the environment for the process
*/
add_environment (cgi, conn);
cherokee_buffer_add (&cgi->envp, "\0", 1);
/* Command line
*/
cmd = HDL_CGI_BASE(cgi)->executable.buf;
cherokee_buffer_add (&cmd_line, cmd, strlen(cmd));
// cherokee_buffer_add_va (&cmd_line, " \"%s\"", HDL_CGI_BASE(cgi)->param.buf);
/* Execution directory
*/
if (! cherokee_buffer_is_empty (&conn->effective_directory)) {
cherokee_buffer_add_buffer (&exec_dir, &conn->effective_directory);
} else {
char *file = strrchr (cmd, '/');
char *end = HDL_CGI_BASE(cgi)->executable.buf + HDL_CGI_BASE(cgi)->executable.len;
cherokee_buffer_add (&exec_dir, cmd,
HDL_CGI_BASE(cgi)->executable.len - (end - file));
}
/* Set the bInheritHandle flag so pipe handles are inherited.
*/
memset(&saSecAtr, 0, sizeof(SECURITY_ATTRIBUTES));
saSecAtr.nLength = sizeof(SECURITY_ATTRIBUTES);
saSecAtr.lpSecurityDescriptor = NULL;
saSecAtr.bInheritHandle = TRUE;
/* Create the pipes
*/
hProc = GetCurrentProcess();
re = CreatePipe (&hChildStdoutRd, &hChildStdoutWr, &saSecAtr, 0);
if (!re) return ret_error;
re = CreatePipe (&hChildStdinRd, &hChildStdinWr, &saSecAtr, 0);
if (!re) return ret_error;
/* Make them inheritable
*/
re = DuplicateHandle (hProc, hChildStdoutRd,
hProc, &hChildStdoutRd,
0, TRUE,
DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
if (!re) return ret_error;
re = DuplicateHandle (hProc, hChildStdinWr,
hProc, &hChildStdinWr,
0, TRUE,
DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
if (!re) return ret_error;
/* Starting information
*/
ZeroMemory (&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.hStdOutput = hChildStdoutWr;
si.hStdError = hChildStdoutWr;
si.hStdInput = hChildStdinRd;
si.dwFlags |= STARTF_USESTDHANDLES;
TRACE (ENTRIES, "exec %s dir %s\n", cmd_line.buf, exec_dir.buf);
/* Launch the child process
*/
re = CreateProcess (cmd, /* ApplicationName */
cmd_line.buf, /* Command line */
NULL, /* Process handle not inheritable */
NULL, /* Thread handle not inheritable */
TRUE, /* Handle inheritance */
0, /* Creation flags */
cgi->envp.buf, /* Use parent's environment block */
exec_dir.buf, /* Use parent's starting directory */
&si, /* Pointer to STARTUPINFO structure */
&pi); /* Pointer to PROCESS_INFORMATION structure */
CloseHandle (hChildStdinRd);
CloseHandle (hChildStdoutWr);
if (!re) {
LOG_ERROR (CHEROKEE_ERROR_HANDLER_CGI_CREATEPROCESS, GetLastError());
CloseHandle (pi.hProcess);
CloseHandle (pi.hThread);
conn->error_code = http_internal_error;
return ret_error;
}
cherokee_buffer_mrproper (&cmd_line);
cherokee_buffer_mrproper (&exec_dir);
cgi->thread = pi.hThread;
cgi->process = pi.hProcess;
/* Wait for the CGI process to be ready
*/
WaitForInputIdle (pi.hProcess, INFINITE);
/* Extract the file descriptors
*/
cgi->pipeInput = _open_osfhandle((LONG)hChildStdoutRd, O_BINARY|_O_RDONLY);
if (! conn->post.len <= 0) {
CloseHandle (hChildStdinWr);
} else {
cgi->pipeOutput = _open_osfhandle((LONG)hChildStdinWr, O_BINARY|_O_WRONLY);
}
TRACE (ENTRIES, "In fd %d, Out fd %d\n", cgi->pipeInput, cgi->pipeOutput);
return ret_ok;
}
static NORETURN void
manage_child_cgi_process (cherokee_handler_cgi_t *cgi, int pipe_cgi[2], int pipe_server[2])
{
/* Child process
*/
int re;
char *script;
cherokee_connection_t *conn = HANDLER_CONN(cgi);
cherokee_handler_cgi_base_t *cgi_base = HDL_CGI_BASE(cgi);
char *absolute_path = cgi_base->executable.buf;
char *argv[2] = { NULL, NULL };
#ifdef TRACE_ENABLED
TRACE(ENTRIES, "About to execute: '%s'\n", absolute_path);
if (! cherokee_buffer_is_empty (&conn->effective_directory))
TRACE(ENTRIES, "Effective directory: '%s'\n", conn->effective_directory.buf);
else
TRACE(ENTRIES, "No Effective directory %s", "\n");
#endif
/* Close useless sides
*/
cherokee_fd_close (pipe_cgi[0]);
cherokee_fd_close (pipe_server[1]);
/* Change stdin and out
*/
re = dup2 (pipe_server[0], STDIN_FILENO);
cherokee_fd_close (pipe_server[0]);
if (unlikely (re != 0)) {
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d" CRLF_CRLF, __FILE__, __LINE__);
exit(1);
}
re |= dup2 (pipe_cgi[1], STDOUT_FILENO);
cherokee_fd_close (pipe_cgi[1]);
/* Redirect the stderr
*/
if ((CONN_VSRV(conn)->error_writer != NULL) &&
(CONN_VSRV(conn)->error_writer->fd != -1))
{
dup2 (CONN_VSRV(conn)->error_writer->fd, STDERR_FILENO);
}
# if 0
/* Set unbuffered
*/
setvbuf (stdin, NULL, _IONBF, 0);
setvbuf (stdout, NULL, _IONBF, 0);
# endif
/* Enable blocking mode
*/
_fd_set_properties (STDIN_FILENO, 0, O_NONBLOCK);
_fd_set_properties (STDOUT_FILENO, 0, O_NONBLOCK);
_fd_set_properties (STDERR_FILENO, 0, O_NONBLOCK);
/* Sets the new environ.
*/
add_environment (cgi, conn);
/* Change the directory
*/
if (! cherokee_buffer_is_empty (&conn->effective_directory)) {
re = chdir (conn->effective_directory.buf);
} else {
char *file = strrchr (absolute_path, '/');
*file = '\0';
re = chdir (absolute_path);
*file = '/';
}
if (re < 0) {
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d" CRLF_CRLF, __FILE__, __LINE__);
exit(1);
}
/* Build de argv array
*/
script = absolute_path;
argv[0] = absolute_path;
/* Change the execution user?
*/
if (HANDLER_CGI_PROPS(cgi_base)->change_user) {
struct stat info;
re = stat (script, &info);
if (re >= 0) {
re = setuid (info.st_uid);
if (re != 0) {
LOG_ERROR (CHEROKEE_ERROR_HANDLER_CGI_SETID, script, info.st_uid);
}
}
}
/* Reset the server-wide signal handlers
*/
#ifdef SIGPIPE
signal (SIGPIPE, SIG_DFL);
#endif
#ifdef SIGHUP
signal (SIGHUP, SIG_DFL);
#endif
#ifdef SIGSEGV
signal (SIGSEGV, SIG_DFL);
#endif
#ifdef SIGBUS
signal (SIGBUS, SIG_DFL);
#endif
#ifdef SIGTERM
signal (SIGTERM, SIG_DFL);
#endif
/* Lets go.. execute it!
*/
re = execve (absolute_path, argv, cgi->envp);
if (re < 0) {
int err = errno;
char buferr[ERROR_MAX_BUFSIZE];
switch (err) {
case ENOENT:
printf ("Status: 404" CRLF_CRLF);
break;
default:
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d cmd=%s: %s" CRLF_CRLF,
__FILE__, __LINE__, absolute_path, strerror(err));
}
/* Don't use the logging system (concurrency issues)
*/
LOG_ERROR (CHEROKEE_ERROR_HANDLER_CGI_EXECUTE,
absolute_path, cherokee_strerror_r(err, buferr, sizeof(buferr)));
exit(1);
}
/* There is no way, it could reach this point.
*/
SHOULDNT_HAPPEN;
exit(2);
}
ret_t
cherokee_handler_cgi_free (cherokee_handler_cgi_t *cgi)
{
int i;
/* Free the rest of the handler CGI memory
*/
cherokee_handler_cgi_base_free (HDL_CGI_BASE(cgi));
/* Close the connection with the CGI
*/
if (cgi->pipeInput > 0) {
cherokee_fd_close (cgi->pipeInput);
cgi->pipeInput = -1;
}
if (cgi->pipeOutput > 0) {
cherokee_fd_close (cgi->pipeOutput);
cgi->pipeOutput = -1;
}
/* Kill the CGI
*/
#ifndef _WIN32
if (cgi->pid > 0) {
pid_t pid;
cint_t tries = 2;
while (true) {
do {
pid = waitpid (cgi->pid, NULL, WNOHANG);
} while ((pid == 1) && (errno == EINTR));
if (pid > 0) {
/* Ok */
break;
} else if (errno == ECHILD) {
/* Already death */
break;
}
/* Failed */
kill (cgi->pid, SIGTERM);
tries--;
if (tries < 0)
break;
}
}
#else
if (cgi->process) {
WaitForSingleObject (cgi->process, INFINITE);
CloseHandle (cgi->process);
}
if (cgi->thread) {
CloseHandle (cgi->thread);
}
#endif
/* Free the environment variables
*/
#ifdef _WIN32
cherokee_buffer_mrproper (&cgi->envp);
#else
for (i=0; i<cgi->envp_last; i++) {
free (cgi->envp[i]);
cgi->envp[i] = NULL;
}
#endif
/* For some reason, we have seen that the SIGCHLD signal does not call to
* our handler in a server with a lot of requests, so the wait() call,
* necessary to free the resources used by the CGI, is not called. So I
* think that a possible solution couble be to put the waitpid call in the
* _free method of this handler, so when the handler ends, this will free
* the resources used by our cool CGI.
*/
do_reap();
return ret_ok;
}
/* Methods implementation
*/
static ret_t
process_package (cherokee_handler_fcgi_t *hdl, cherokee_buffer_t *inbuf, cherokee_buffer_t *outbuf)
{
FCGI_Header *header;
cuint_t len;
char *data;
cuint_t type;
cuint_t id;
cuint_t padding;
/* Is there enough information?
*/
if (inbuf->len < sizeof(FCGI_Header))
return ret_ok;
/* At least there is a header
*/
header = (FCGI_Header *)inbuf->buf;
if (header->version != 1) {
cherokee_buffer_print_debug (inbuf, -1);
LOG_ERROR_S (CHEROKEE_ERROR_HANDLER_FCGI_VERSION);
return ret_error;
}
if (header->type != FCGI_STDERR &&
header->type != FCGI_STDOUT &&
header->type != FCGI_END_REQUEST) {
cherokee_buffer_print_debug (inbuf, -1);
LOG_ERROR_S (CHEROKEE_ERROR_HANDLER_FCGI_PARSING);
return ret_error;
}
/* Read the header
*/
type = header->type;
padding = header->paddingLength;
id = (header->requestIdB0 | (header->requestIdB1 << 8));
len = (header->contentLengthB0 | (header->contentLengthB1 << 8));
data = inbuf->buf + FCGI_HEADER_LEN;
/* printf ("have %d, hdr=%d exp_len=%d pad=%d\n", inbuf->len, FCGI_HEADER_LEN, len, padding); */
/* Is the package complete?
*/
if (len + padding > inbuf->len - FCGI_HEADER_LEN) {
/* printf ("Incomplete: %d < %d\n", len + padding, inbuf->len - FCGI_HEADER_LEN); */
return ret_ok;
}
/* It has received the full package content
*/
switch (type) {
case FCGI_STDERR:
/* printf ("READ:STDERR (%d): %s", len, data?data:""); */
LOG_ERROR (CHEROKEE_ERROR_HANDLER_FCGI_STDERR, data);
/* Debug mode */
if (SOURCE_INT(hdl->src_ref)->debug) {
PRINT_MSG ("%.*s\n", len, data);
}
break;
case FCGI_STDOUT:
/* printf ("READ:STDOUT eof=%d: %d", HDL_CGI_BASE(hdl)->got_eof, len); */
cherokee_buffer_add (outbuf, data, len);
break;
case FCGI_END_REQUEST:
/* printf ("READ:END"); */
HDL_CGI_BASE(hdl)->got_eof = true;
break;
default:
SHOULDNT_HAPPEN;
}
cherokee_buffer_move_to_begin (inbuf, len + FCGI_HEADER_LEN + padding);
/* printf ("- FCGI left %d\n", inbuf->len); */
return ret_eagain;
}
static ret_t
fork_and_execute_cgi_via_spawner(cherokee_handler_cgi_t *cgi)
{
int re;
int pid = -1;
cherokee_connection_t *conn = HANDLER_CONN(cgi);
cherokee_handler_cgi_base_t *cgi_base = HDL_CGI_BASE(cgi);
ret_t ret;
uid_t uid;
gid_t gid;
cherokee_buffer_t empty = CHEROKEE_BUF_INIT;
cherokee_buffer_t username = CHEROKEE_BUF_INIT;
cherokee_services_fdmap_t fd_map;
cherokee_buffer_t *chdir = NULL;
cherokee_buffer_t chdir_backing = CHEROKEE_BUF_INIT;
struct passwd ent;
char ent_tmp[1024];
struct {
int cgi[2];
int server[2];
} pipes;
TRACE (ENTRIES, "Trying to create CGI via spawner\n");
if (! cherokee_buffer_is_empty (&conn->effective_directory)) {
chdir = &conn->effective_directory;
} else {
int ofs = cgi_base->executable.len - 1;
while (ofs >= 0 && cgi_base->executable.buf[ofs] != '/') {
ofs--;
}
TRACE (ENTRIES, "While building chdir, ofs=%d\n", ofs);
if (ofs < 0 || cherokee_buffer_add (&chdir_backing,
cgi_base->executable.buf,
ofs + 1) != ret_ok) {
conn->error_code = http_internal_error;
TRACE (ENTRIES, "Failed, cannot build chdir entry\n");
cherokee_buffer_mrproper(&chdir_backing);
return ret_error;
}
chdir = &chdir_backing;
}
/* Creates the pipes ...
*/
re = cherokee_pipe (pipes.cgi);
re |= cherokee_pipe (pipes.server);
if (re != 0) {
conn->error_code = http_internal_error;
cherokee_buffer_mrproper(&chdir_backing);
TRACE (ENTRIES, "Failed, cannot build pipes\n");
return ret_error;
}
if (HANDLER_CGI_PROPS(cgi_base)->change_user) {
struct stat nocache_info;
struct stat *info;
cherokee_iocache_entry_t *io_entry = NULL;
cherokee_server_t *srv = CONN_SRV(conn);
cherokee_handler_cgi_base_props_t *props = HANDLER_CGI_BASE_PROPS(cgi);
ret = cherokee_io_stat (srv->iocache, &cgi_base->executable, props->use_cache, &nocache_info, &io_entry, &info);
if (ret != ret_ok) {
info = &nocache_info;
nocache_info.st_uid = getuid();
nocache_info.st_gid = getgid();
}
uid = info->st_uid;
gid = info->st_gid;
cherokee_iocache_entry_unref(&io_entry);
} else {
/* Not changing, so launch as the same uid/gid as the worker */
uid = getuid();
gid = getgid();
}
/* Determine the username of the owner of the file */
ret = cherokee_getpwuid(uid, &ent, ent_tmp, sizeof (ent_tmp));
if (ret != ret_ok ||
cherokee_buffer_add(&username,
ent.pw_name,
strlen(ent.pw_name) != ret_ok)) {
cherokee_fd_close(pipes.cgi[0]);
cherokee_fd_close(pipes.cgi[1]);
cherokee_fd_close(pipes.server[0]);
cherokee_fd_close(pipes.server[1]);
conn->error_code = http_internal_error;
cherokee_buffer_mrproper(&chdir_backing);
cherokee_buffer_mrproper(&username);
TRACE (ENTRIES, "Failed, Unable to retrieve username for uid %d\n", uid);
return ret_error;
}
/* Update the environment ready to run */
add_environment (cgi, conn);
/* Set up the FD map */
fd_map.fd_in = pipes.server[0];
fd_map.fd_out = pipes.cgi[1];
if ((CONN_VSRV(conn)->error_writer != NULL) &&
(CONN_VSRV(conn)->error_writer->fd != -1)) {
fd_map.fd_err = CONN_VSRV(conn)->error_writer->fd;
} else {
fd_map.fd_err = fd_map.fd_out;
}
TRACE (ENTRIES, "Doing Spawn\n");
ret = cherokee_services_client_spawn (&cgi_base->executable,
&username,
uid,
gid,
&empty,
chdir,
false,
cgi->envp,
CONN_VSRV(conn)->error_writer,
&pid,
&fd_map);
cherokee_buffer_mrproper(&chdir_backing);
cherokee_buffer_mrproper(&username);
/* Close the client FDs */
cherokee_fd_close (pipes.server[0]);
cherokee_fd_close (pipes.cgi[1]);
/* Did we fail to try to spawn? */
if (ret != ret_ok) {
/* Close the server FDs too */
cherokee_fd_close (pipes.server[1]);
cherokee_fd_close (pipes.cgi[0]);
TRACE (ENTRIES, "Failed to spawn\n");
return ret;
}
/* Did we try, but fail, to spawn? */
if (pid == -1) {
/* Close the server FDs too */
cherokee_fd_close (pipes.server[1]);
cherokee_fd_close (pipes.cgi[0]);
TRACE (ENTRIES, "Spawned, but failed server side\n");
return ret_error;
}
/* Successfully launched */
cgi->pid = pid;
cgi->pipeInput = pipes.cgi[0];
cgi->pipeOutput = pipes.server[1];
/* Set to Input to NON-BLOCKING
*/
_fd_set_properties (cgi->pipeInput, O_NDELAY|O_NONBLOCK, 0);
TRACE (ENTRIES, "CGI running, PID=%d\n", pid);
return ret_ok;
}
static NORETURN void
manage_child_cgi_process (cherokee_handler_cgi_t *cgi, int pipe_cgi[2], int pipe_server[2])
{
/* Child process
*/
int re;
cherokee_connection_t *conn = HANDLER_CONN(cgi);
cherokee_handler_cgi_base_t *cgi_base = HDL_CGI_BASE(cgi);
char *absolute_path = cgi_base->executable.buf;
char *argv[2] = { NULL, NULL };
#ifdef TRACE_ENABLED
TRACE(ENTRIES, "About to execute: '%s'\n", absolute_path);
if (! cherokee_buffer_is_empty (&conn->effective_directory))
TRACE(ENTRIES, "Effective directory: '%s'\n", conn->effective_directory.buf);
else
TRACE(ENTRIES, "No Effective directory %s", "\n");
#endif
/* Close useless sides
*/
cherokee_fd_close (pipe_cgi[0]);
cherokee_fd_close (pipe_server[1]);
/* Change stdin and out
*/
cherokee_fd_close (STDIN_FILENO);
re = dup2 (pipe_server[0], STDIN_FILENO);
cherokee_fd_close (pipe_server[0]);
if (unlikely (re != 0)) {
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d" CRLF_CRLF, __FILE__, __LINE__);
exit(1);
}
cherokee_fd_close (STDOUT_FILENO);
re |= dup2 (pipe_cgi[1], STDOUT_FILENO);
cherokee_fd_close (pipe_cgi[1]);
/* Redirect the stderr
*/
if ((CONN_VSRV(conn)->error_writer != NULL) &&
(CONN_VSRV(conn)->error_writer->fd != -1))
{
cherokee_fd_close (STDERR_FILENO);
dup2 (CONN_VSRV(conn)->error_writer->fd, STDERR_FILENO);
}
# if 0
/* Set unbuffered
*/
setvbuf (stdin, NULL, _IONBF, 0);
setvbuf (stdout, NULL, _IONBF, 0);
# endif
/* Enable blocking mode
*/
_fd_set_properties (STDIN_FILENO, 0, O_NONBLOCK);
_fd_set_properties (STDOUT_FILENO, 0, O_NONBLOCK);
_fd_set_properties (STDERR_FILENO, 0, O_NONBLOCK);
/* Sets the new environ.
*/
add_environment (cgi, conn);
/* Change the directory
*/
if (! cherokee_buffer_is_empty (&conn->effective_directory)) {
re = chdir (conn->effective_directory.buf);
} else {
char *file = strrchr (absolute_path, '/');
if (file != NULL) {
*file = '\0';
re = chdir (absolute_path);
*file = '/';
} else {
re = -1;
}
}
if (re < 0) {
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d" CRLF_CRLF, __FILE__, __LINE__);
exit(1);
}
/* Build de argv array
*/
argv[0] = absolute_path;
/* Change the execution user?
*/
if (HANDLER_CGI_PROPS(cgi_base)->change_user) {
struct stat nocache_info;
struct stat *info;
cherokee_iocache_entry_t *io_entry = NULL;
cherokee_server_t *srv = CONN_SRV(conn);
cherokee_handler_cgi_base_props_t *props = HANDLER_CGI_BASE_PROPS(cgi);
ret_t ret = cherokee_io_stat (srv->iocache, &cgi_base->executable, props->use_cache, &nocache_info, &io_entry, &info);
if (ret != ret_ok) {
info = &nocache_info;
}
re = setuid (info->st_uid);
if (re != 0) {
LOG_ERROR (CHEROKEE_ERROR_HANDLER_CGI_SETID, absolute_path, info->st_uid);
}
cherokee_iocache_entry_unref(&io_entry);
}
/* Reset the server-wide signal handlers
*/
cherokee_reset_signals();
/* Lets go.. execute it!
*/
do {
re = execve (absolute_path, argv, cgi->envp);
} while ((re == -1) && (errno == EINTR));
if (re < 0) {
int err = errno;
char buferr[ERROR_MAX_BUFSIZE];
switch (err) {
case ENODEV:
case ENOTDIR:
case ENOENT:
printf ("Status: 404" CRLF_CRLF);
exit(0);
case EPERM:
case EACCES:
case ENOEXEC:
printf ("Status: 403" CRLF_CRLF);
exit(0);
default:
printf ("Status: 500" CRLF_CRLF);
printf ("X-Debug: file=%s line=%d cmd=%s errno=%d: %s" CRLF_CRLF,
__FILE__, __LINE__, absolute_path, err, strerror(err));
}
/* Don't use the logging system (concurrency issues)
*/
LOG_ERROR (CHEROKEE_ERROR_HANDLER_CGI_EXECUTE,
absolute_path, cherokee_strerror_r(err, buferr, sizeof(buferr)));
exit(1);
}
/* There is no way, it could reach this point.
*/
SHOULDNT_HAPPEN;
exit(2);
}
