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/******************************************************************
* $Id: soap-server.c,v 1.15 2006/01/27 20:23:40 mrcsys Exp $
*
* CSOAP Project: A SOAP client/server library in C
* Copyright (C) 2003 Ferhat Ayaz
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Email: ayaz@jprogrammer.net
******************************************************************/
#include <libcsoap/soap-server.h>
#include <nanohttp/nanohttp-server.h>
#include <string.h>
typedef struct _SoapRouterNode
{
char *context;
SoapRouter *router;
struct _SoapRouterNode *next;
} SoapRouterNode;
SoapRouterNode *head = NULL;
SoapRouterNode *tail = NULL;
static
SoapRouterNode *router_node_new(SoapRouter * router,
const char *context, SoapRouterNode * next);
static SoapRouter *router_find(const char *context);
static void _soap_server_send_ctx(httpd_conn_t * conn, SoapCtx * ctxres);
/*---------------------------------*/
void soap_server_entry(httpd_conn_t * conn, hrequest_t * req);
static void _soap_server_send_env(http_output_stream_t * out, SoapEnv * env);
static
void _soap_server_send_fault(httpd_conn_t * conn, hpair_t * header,
const char *errmsg);
/*---------------------------------*/
herror_t
soap_server_init_args(int argc, char *argv[])
{
return httpd_init(argc, argv);
}
int
soap_server_register_router(SoapRouter * router, const char *context)
{
if (!httpd_register(context, soap_server_entry))
{
return 0;
}
if (tail == NULL)
{
head = tail = router_node_new(router, context, NULL);
}
else
{
tail->next = router_node_new(router, context, NULL);
tail = tail->next;
}
return 1;
}
herror_t
soap_server_run()
{
return httpd_run();
}
void
soap_server_destroy()
{
SoapRouterNode *node = head;
SoapRouterNode *tmp;
while (node != NULL)
{
tmp = node->next;
log_verbose2("soap_router_free(%p)", node->router);
soap_router_free(node->router);
free(node->context);
free(node);
node = tmp;
}
httpd_destroy();
}
void
soap_server_entry(httpd_conn_t * conn, hrequest_t * req)
{
hpair_t *header = NULL;
char buffer[1054];
char *urn;
char *method;
SoapCtx *ctx, *ctxres;
SoapRouter *router;
SoapService *service;
SoapEnv *env;
herror_t err;
if (req->method != HTTP_REQUEST_POST)
{
httpd_send_header(conn, 200, "OK");
http_output_stream_write_string(conn->out, "<html><head></head><body>");
http_output_stream_write_string(conn->out, "<h1>Sorry! </h1><hr>");
http_output_stream_write_string(conn->out,
"I only speak with 'POST' method");
http_output_stream_write_string(conn->out, "</body></html>");
return;
}
header = hpairnode_new(HEADER_CONTENT_TYPE, "text/xml", NULL);
err = soap_env_new_from_stream(req->in, &env);
if (err != H_OK)
{
_soap_server_send_fault(conn, header, herror_message(err));
herror_release(err);
return;
}
if (env == NULL)
{
_soap_server_send_fault(conn, header, "Can not receive POST data!");
}
else
{
ctx = soap_ctx_new(env);
soap_ctx_add_files(ctx, req->attachments);
if (ctx->env == NULL)
{
_soap_server_send_fault(conn, header, "Can not parse POST data!");
}
else
{
/* soap_xml_doc_print(env->root->doc); */
router = router_find(req->path);
if (router == NULL)
{
_soap_server_send_fault(conn, header, "Can not find router!");
}
else
{
if (!(urn=soap_env_find_urn(ctx->env)))
{
_soap_server_send_fault(conn, header, "No URN found!");
soap_ctx_free(ctx);
return;
}
else
{
log_verbose2("urn: '%s'", urn);
}
if (!(method=soap_env_find_methodname(ctx->env)))
{
_soap_server_send_fault(conn, header, "No method found!");
soap_ctx_free(ctx);
return;
}
else
{
log_verbose2("method: '%s'", method);
}
service = soap_router_find_service(router, urn, method);
if (service == NULL)
{
sprintf(buffer, "URN '%s' not found", urn);
_soap_server_send_fault(conn, header, buffer);
soap_ctx_free(ctx);
return;
}
else
{
log_verbose2("func: %p", service->func);
ctxres = soap_ctx_new(NULL);
/* ===================================== */
/* CALL SERVICE FUNCTION */
/* ===================================== */
err = service->func(ctx, ctxres);
if (err != H_OK)
{
sprintf(buffer, "Service returned following error message: '%s'",
herror_message(err));
herror_release(err);
_soap_server_send_fault(conn, header, buffer);
soap_ctx_free(ctx);
return;
}
if (ctxres->env == NULL)
{
sprintf(buffer, "Service '%s' returned no envelope", urn);
_soap_server_send_fault(conn, header, buffer);
soap_ctx_free(ctx);
return;
}
else
{
/* httpd_send_header(conn, 200, "OK");
_soap_server_send_env(conn->out, ctxres->env);
*/
_soap_server_send_ctx(conn, ctxres);
/* free envctx */
soap_ctx_free(ctxres);
}
}
}
}
soap_ctx_free(ctx);
}
}
static void
_soap_server_send_ctx(httpd_conn_t * conn, SoapCtx * ctx)
{
xmlBufferPtr buffer;
static int counter = 1;
char strbuffer[150];
part_t *part;
if (ctx->env == NULL || ctx->env->root == NULL)
return;
buffer = xmlBufferCreate();
/* xmlIndentTreeOutput = 1;*/
xmlThrDefIndentTreeOutput(1);
/* xmlKeepBlanksDefault(0);*/
xmlNodeDump(buffer, ctx->env->root->doc, ctx->env->root, 1, 1);
if (ctx->attachments)
{
sprintf(strbuffer, "000128590350940924234%d", counter++);
httpd_mime_send_header(conn, strbuffer, "", "text/xml", 200, "OK");
httpd_mime_next(conn, strbuffer, "text/xml", "binary");
http_output_stream_write_string(conn->out,
(const char *) xmlBufferContent(buffer));
part = ctx->attachments->parts;
while (part)
{
httpd_mime_send_file(conn, part->id, part->content_type,
part->transfer_encoding, part->filename);
part = part->next;
}
httpd_mime_end(conn);
}
else
{
char buflen[100];
xmlXPathContextPtr xpathCtx;
xmlXPathObjectPtr xpathObj;
xpathCtx = xmlXPathNewContext(ctx->env->root->doc);
xpathObj = xmlXPathEvalExpression("//Fault", xpathCtx);
#ifdef WIN32
#define snprintf(buffer, num, s1, s2) sprintf(buffer, s1,s2)
#endif
snprintf(buflen, 100, "%d",
strlen((const char *) xmlBufferContent(buffer)));
httpd_set_header(conn, HEADER_CONTENT_LENGTH, buflen);
if ((xpathObj->nodesetval) ? xpathObj->nodesetval->nodeNr : 0)
{
httpd_send_header(conn, 500, "FAILED");
}
else
{
httpd_send_header(conn, 200, "OK");
}
http_output_stream_write_string(conn->out,
(const char *) xmlBufferContent(buffer));
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
}
xmlBufferFree(buffer);
}
static void
_soap_server_send_env(http_output_stream_t * out, SoapEnv * env)
{
xmlBufferPtr buffer;
if (env == NULL || env->root == NULL)
return;
buffer = xmlBufferCreate();
xmlNodeDump(buffer, env->root->doc, env->root, 1, 1);
http_output_stream_write_string(out,
(const char *) xmlBufferContent(buffer));
xmlBufferFree(buffer);
}
static void
_soap_server_send_fault(httpd_conn_t * conn, hpair_t * header,
const char *errmsg)
{
SoapEnv *envres;
herror_t err;
char buffer[45];
httpd_set_headers(conn, header);
err = httpd_send_header(conn, 500, "FAILED");
if (err != H_OK)
{
/* WARNING: unhandled exception ! */
log_error4("%s():%s [%d]", herror_func(err), herror_message(err),
herror_code(err));
return;
}
err = soap_env_new_with_fault(Fault_Server,
errmsg ? errmsg : "General error",
"cSOAP_Server", NULL, &envres);
if (err != H_OK)
{
log_error1(herror_message(err));
http_output_stream_write_string(conn->out, "<html><head></head><body>");
http_output_stream_write_string(conn->out, "<h1>Error</h1><hr>");
http_output_stream_write_string(conn->out,
"Error while sending fault object:<br>Message: ");
http_output_stream_write_string(conn->out, herror_message(err));
http_output_stream_write_string(conn->out, "<br>Function: ");
http_output_stream_write_string(conn->out, herror_func(err));
http_output_stream_write_string(conn->out, "<br>Error code: ");
sprintf(buffer, "%d", herror_code(err));
http_output_stream_write_string(conn->out, buffer);
http_output_stream_write_string(conn->out, "</body></html>");
return;
herror_release(err);
}
else
{
_soap_server_send_env(conn->out, envres);
}
}
static SoapRouterNode *
router_node_new(SoapRouter * router,
const char *context, SoapRouterNode * next)
{
SoapRouterNode *node;
const char *noname = "/lost_found";
node = (SoapRouterNode *) malloc(sizeof(SoapRouterNode));
if (context)
{
node->context = (char *) malloc(strlen(context) + 1);
strcpy(node->context, context);
}
else
{
log_warn2("context is null. Using '%s'", noname);
node->context = (char *) malloc(strlen(noname) + 1);
strcpy(node->context, noname);
}
node->router = router;
node->next = next;
return node;
}
static SoapRouter *
router_find(const char *context)
{
SoapRouterNode *node = head;
while (node != NULL)
{
if (!strcmp(node->context, context))
return node->router;
node = node->next;
}
return NULL;
}
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