/* This file is part of Metaproxy.
- Copyright (C) 2005-2010 Index Data
+ Copyright (C) Index Data
Metaproxy is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
#include <yaz/log.h>
#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
#include <sys/wait.h>
+#include <yaz/poll.h>
#include <sstream>
#include "config.hpp"
class CGI::Rep {
friend class CGI;
std::list<CGI::Exec> exec_map;
+ std::map<std::string,std::string> env_map;
+ std::map<pid_t,pid_t> children;
+ boost::mutex m_mutex;
+ std::string documentroot;
+ void child(Z_HTTP_Request *, const CGI::Exec *);
+ public:
+ ~Rep();
};
}
}
yf::CGI::CGI() : m_p(new Rep)
{
+
+}
+
+yf::CGI::Rep::~Rep()
+{
+ std::map<pid_t,pid_t>::const_iterator it;
+ boost::mutex::scoped_lock lock(m_mutex);
+
+ for (it = children.begin(); it != children.end(); it++)
+ kill(it->second, SIGTERM);
}
yf::CGI::~CGI()
-{ // must have a destructor because of boost::scoped_ptr
+{
+}
+
+void yf::CGI::Rep::child(Z_HTTP_Request *hreq, const CGI::Exec *it)
+{
+ const char *path_cstr = hreq->path;
+ std::string path(path_cstr);
+ const char *program_cstr = it->program.c_str();
+ std::string script_name(path, 0, it->path.length());
+ std::string rest(path, it->path.length());
+ std::string query_string;
+ std::string path_info;
+ size_t qpos = rest.find('?');
+ if (qpos == std::string::npos)
+ path_info = rest;
+ else
+ {
+ query_string.assign(rest, qpos + 1, std::string::npos);
+ path_info.assign(rest, 0, qpos);
+ }
+ setenv("REQUEST_METHOD", hreq->method, 1);
+ setenv("REQUEST_URI", path_cstr, 1);
+ setenv("SCRIPT_NAME", script_name.c_str(), 1);
+ setenv("PATH_INFO", path_info.c_str(), 1);
+ setenv("QUERY_STRING", query_string.c_str(), 1);
+ const char *v;
+ v = z_HTTP_header_lookup(hreq->headers, "Cookie");
+ if (v)
+ setenv("HTTP_COOKIE", v, 1);
+ v = z_HTTP_header_lookup(hreq->headers, "User-Agent");
+ if (v)
+ setenv("HTTP_USER_AGENT", v, 1);
+ v = z_HTTP_header_lookup(hreq->headers, "Accept");
+ if (v)
+ setenv("HTTP_ACCEPT", v, 1);
+ v = z_HTTP_header_lookup(hreq->headers, "Accept-Encoding");
+ if (v)
+ setenv("HTTP_ACCEPT_ENCODING", v, 1);
+ setenv("DOCUMENT_ROOT", documentroot.c_str(), 1);
+ setenv("GATEWAY_INTERFACE", "CGI/1.1", 1);
+
+ v = z_HTTP_header_lookup(hreq->headers, "Content-Type");
+ if (v)
+ {
+ char tmp[40];
+ sprintf(tmp, "%d", hreq->content_len);
+ setenv("CONTENT_LENGTH", tmp, 1);
+ setenv("CONTENT_TYPE", v, 1);
+ }
+ // apply user-defined environment
+ std::map<std::string,std::string>::const_iterator it_e;
+ for (it_e = env_map.begin();
+ it_e != env_map.end(); it_e++)
+ setenv(it_e->first.c_str(), it_e->second.c_str(), 1);
+ // change directory to configuration root
+ // then to CGI program directory (could be relative)
+ chdir(documentroot.c_str());
+ char *program = xstrdup(program_cstr);
+ char *cp = strrchr(program, '/');
+ if (cp)
+ {
+ *cp++ = '\0';
+ chdir(program);
+ }
+ else
+ cp = program;
+ int r = execl(cp, cp, (char *) 0);
+ if (r == -1)
+ exit(1);
+ exit(0);
}
void yf::CGI::process(mp::Package &package) const
{
Z_GDU *zgdu_req = package.request().get();
Z_GDU *zgdu_res = 0;
-
- if (!zgdu_req)
- return;
-
- if (zgdu_req->which != Z_GDU_HTTP_Request)
+
+ if (!zgdu_req || zgdu_req->which != Z_GDU_HTTP_Request)
{
package.move();
return;
}
- std::string path_info;
- std::string query_string;
- const char *path = zgdu_req->u.HTTP_Request->path;
- yaz_log(YLOG_LOG, "path=%s", path);
- const char *p_cp = strchr(path, '?');
- if (p_cp)
- {
- path_info.assign(path, p_cp - path);
- query_string.assign(p_cp+1);
- }
- else
- path_info.assign(path);
-
std::list<CGI::Exec>::const_iterator it;
metaproxy_1::odr odr;
+ Z_HTTP_Request *hreq = zgdu_req->u.HTTP_Request;
+ const char *path_cstr = hreq->path;
for (it = m_p->exec_map.begin(); it != m_p->exec_map.end(); it++)
{
- if (it->path.compare(path_info) == 0)
+ if (strncmp(it->path.c_str(), path_cstr, it->path.length()) == 0)
{
- int r;
- pid_t pid;
+ int fds_response[2];
+ int r = pipe(fds_response);
+ if (r == -1)
+ {
+ zgdu_res = odr.create_HTTP_Response(
+ package.session(), hreq, 400);
+ package.response() = zgdu_res;
+ continue;
+ }
+ int fds_request[2];
+ r = pipe(fds_request);
+ if (r == -1)
+ {
+ zgdu_res = odr.create_HTTP_Response(
+ package.session(), hreq, 400);
+ package.response() = zgdu_res;
+ close(fds_response[0]);
+ close(fds_response[1]);
+ continue;
+ }
+
int status;
- int fd;
-
- pid = ::fork();
+ pid_t pid = ::fork();
switch (pid)
{
case 0: /* child */
- for (fd = 3; fd <= 1023; fd++)
- close(fd);
- setenv("PATH_INFO", path_info.c_str(), 1);
- setenv("QUERY_STRING", query_string.c_str(), 1);
- r = execl(it->program.c_str(), it->program.c_str(), (char *) 0);
- if (r == -1)
- exit(1);
- exit(0);
+ /* POSTed content */
+ close(0);
+ dup(fds_request[0]);
+ close(fds_request[1]);
+ /* response */
+ close(1);
+ close(fds_response[0]);
+ dup(fds_response[1]);
+ m_p->child(hreq, &(*it));
break;
case -1: /* error */
+ close(fds_request[0]);
+ close(fds_request[1]);
+ close(fds_response[0]);
+ close(fds_response[1]);
zgdu_res = odr.create_HTTP_Response(
- package.session(), zgdu_req->u.HTTP_Request, 400);
+ package.session(), hreq, 400);
package.response() = zgdu_res;
break;
default: /* parent */
+ close(fds_response[1]);
+ close(fds_request[0]);
+ if (pid)
+ {
+ boost::mutex::scoped_lock lock(m_p->m_mutex);
+ m_p->children[pid] = pid;
+ }
+ WRBUF w = wrbuf_alloc();
+ wrbuf_puts(w, "HTTP/1.1 200 OK\r\n");
+ fcntl(fds_response[0], F_SETFL, O_NONBLOCK);
+ fcntl(fds_request[1], F_SETFL, O_NONBLOCK);
+ int no_write = 0;
+ while (1)
+ {
+ int num = 1;
+ struct yaz_poll_fd fds[2];
+ fds[0].fd = fds_response[0];
+ fds[0].input_mask = yaz_poll_read;
+ if (no_write < hreq->content_len)
+ {
+ fds[1].fd = fds_request[1];
+ fds[1].input_mask = yaz_poll_write;
+ num = 2;
+ }
+ int r = yaz_poll(fds, num, 60, 0);
+ if (r <= 0)
+ break;
+ if (fds[0].output_mask & (yaz_poll_read|yaz_poll_except))
+ {
+ char buf[512];
+ ssize_t rd = read(fds_response[0], buf, sizeof buf);
+ if (rd <= 0)
+ break;
+ wrbuf_write(w, buf, rd);
+ }
+ if (num == 2 && fds[1].output_mask & yaz_poll_write)
+ {
+ ssize_t wd = write(fds_request[1],
+ hreq->content_buf + no_write,
+ hreq->content_len - no_write);
+ if (wd <= 0)
+ break;
+ no_write += wd;
+ }
+ }
+ close(fds_request[1]);
+ close(fds_response[0]);
waitpid(pid, &status, 0);
- zgdu_res = odr.create_HTTP_Response(
- package.session(), zgdu_req->u.HTTP_Request, 200);
+ if (pid)
+ {
+ boost::mutex::scoped_lock lock(m_p->m_mutex);
+ m_p->children.erase(pid);
+ }
+ ODR dec = odr_createmem(ODR_DECODE);
+ odr_setbuf(dec, wrbuf_buf(w), wrbuf_len(w), 0);
+ r = z_GDU(dec, &zgdu_res, 0, 0);
+ if (r && zgdu_res)
+ {
+ package.response() = zgdu_res;
+ }
+ else
+ {
+ zgdu_res = odr.create_HTTP_Response(
+ package.session(), zgdu_req->u.HTTP_Request, 400);
+ Z_HTTP_Response *hres = zgdu_res->u.HTTP_Response;
+ z_HTTP_header_add(odr, &hres->headers,
+ "Content-Type", "text/plain");
+ hres->content_buf =
+ odr_strdup(odr, "Invalid script from script");
+ hres->content_len = strlen(hres->content_buf);
+ }
package.response() = zgdu_res;
+ odr_destroy(dec);
+ wrbuf_destroy(w);
break;
}
return;
package.move();
}
-void yf::CGI::configure(const xmlNode *ptr, bool test_only)
+void yf::CGI::configure(const xmlNode *ptr, bool test_only, const char *path)
{
+ yaz_log(YLOG_LOG, "cgi::configure path=%s", path);
for (ptr = ptr->children; ptr; ptr = ptr->next)
{
if (ptr->type != XML_ELEMENT_NODE)
exec.program = mp::xml::get_text(attr->children);
else
throw mp::filter::FilterException
- ("Bad attribute "
+ ("Bad attribute "
+ std::string((const char *) attr->name)
+ " in cgi section");
}
m_p->exec_map.push_back(exec);
}
+ else if (!strcmp((const char *) ptr->name, "env"))
+ {
+ std::string name, value;
+
+ const struct _xmlAttr *attr;
+ for (attr = ptr->properties; attr; attr = attr->next)
+ {
+ if (!strcmp((const char *) attr->name, "name"))
+ name = mp::xml::get_text(attr->children);
+ else if (!strcmp((const char *) attr->name, "value"))
+ value = mp::xml::get_text(attr->children);
+ else
+ throw mp::filter::FilterException
+ ("Bad attribute "
+ + std::string((const char *) attr->name)
+ + " in cgi section");
+ }
+ if (name.length() > 0)
+ m_p->env_map[name] = value;
+ }
+ else if (!strcmp((const char *) ptr->name, "documentroot"))
+ {
+ m_p->documentroot = path;
+ }
else
{
- throw mp::filter::FilterException("Bad element "
+ throw mp::filter::FilterException("Bad element "
+ std::string((const char *)
ptr->name));
}
}
+ if (m_p->documentroot.length() == 0)
+ m_p->documentroot = ".";
}
static mp::filter::Base* filter_creator()
projects / metaproxy-moved-to-github.git / blobdiff