/*
* Connect the ows to the database specified in configuration file
*/
static void ows_pg(ows * o, char *con_str)
{
assert(o);
assert(con_str);
o->pg = PQconnectdb(con_str);
if (PQstatus(o->pg) != CONNECTION_OK) {
ows_log(o, 1, PQerrorMessage(o->pg));
ows_error(o, OWS_ERROR_CONNECTION_FAILED, "Connection to database failed", "init_OWS");
return;
}
if (PQsetClientEncoding(o->pg, o->db_encoding->buf)) {
ows_log(o, 1, PQerrorMessage(o->pg));
ows_error(o, OWS_ERROR_CONNECTION_FAILED, "Wrong database encoding", "init_OWS");
return;
}
o->postgis_version = ows_psql_postgis_version(o);
if (!o->postgis_version)
ows_error(o, OWS_ERROR_CONNECTION_FAILED, "No PostGIS available in database", "init_OWS");
else if (ows_version_get(o->postgis_version) < 150)
ows_error(o, OWS_ERROR_CONNECTION_FAILED, "PostGIS version must be at least 1.5.0", "init_OWS");
}
/*
* Return an ExceptionReport as specified in OWS 1.1.0 specification
*/
void ows_error(ows * o, enum ows_error_code code, char *message, char *locator)
{
assert(o);
assert(message);
assert(locator);
assert(!o->exit);
o->exit = true;
ows_log(o, 1, message);
#if TINYOWS_FCGI
if ((o->init && FCGI_Accept() >= 0) || !o->init) {
#endif
fprintf(o->output, "Content-Type: application/xml\n\n");
fprintf(o->output, "<?xml version='1.0' encoding='UTF-8'?>\n");
fprintf(o->output, "<ows:ExceptionReport\n");
fprintf(o->output, " xmlns='http://www.opengis.net/ows'\n");
fprintf(o->output, " xmlns:ows='http://www.opengis.net/ows'\n");
fprintf(o->output, " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'\n");
fprintf(o->output, " xsi:schemaLocation='http://www.opengis.net/ows");
fprintf(o->output, " http://schemas.opengis.net/ows/1.0.0/owsExceptionReport.xsd'\n");
fprintf(o->output, " version='1.1.0' language='en'>\n");
fprintf(o->output, " <ows:Exception exceptionCode='%s' locator='%s'>\n",
ows_error_code_string(code), locator);
fprintf(o->output, " <ows:ExceptionText>%s</ows:ExceptionText>\n", message);
fprintf(o->output, " </ows:Exception>\n");
fprintf(o->output, "</ows:ExceptionReport>\n");
#if TINYOWS_FCGI
fflush(o->output);
}
#endif
}
/*
* Execute an SQL request
*/
PGresult * ows_psql_exec(ows *o, const char *sql)
{
assert(o);
assert(sql);
assert(o->pg);
ows_log(o, 8, sql);
return PQexecParams(o->pg, sql, 0, NULL, NULL, NULL, NULL, 0);
}
int main(int argc, char *argv[])
{
ows *o;
char *query;
o = ows_init();
o->config_file = buffer_init();
/* Config Files */
if (getenv("TINYOWS_CONFIG_FILE"))
buffer_add_str(o->config_file, getenv("TINYOWS_CONFIG_FILE"));
else if (getenv("TINYOWS_MAPFILE")) {
buffer_add_str(o->config_file, getenv("TINYOWS_MAPFILE"));
o->mapfile = true;
} else
buffer_add_str(o->config_file, OWS_CONFIG_FILE_PATH);
LIBXML_TEST_VERSION
xmlInitParser();
/* Parse the configuration file and initialize ows struct */
if (!o->exit) ows_parse_config(o, o->config_file->buf);
if (!o->exit) ows_log(o, 2, "== TINYOWS STARTUP ==");
/* Connect the ows to the database */
if (!o->exit) ows_pg(o, o->pg_dsn->buf);
if (!o->exit) ows_log(o, 2, "== Connection PostGIS ==");
/* Fill layers storage metadata */
if (!o->exit) ows_layers_storage_fill(o);
if (!o->exit) ows_log(o, 2, "== Filling Storage ==");
o->init = false;
#if TINYOWS_FCGI
if (!o->exit) ows_log(o, 2, "== FCGI START ==");
while (FCGI_Accept() >= 0) {
#endif
query=NULL;
if (!o->exit) query = cgi_getback_query(o); /* Retrieve safely query string */
if (!o->exit) ows_log(o, 4, query); /* Log input query if asked */
if (!o->exit && (!query || !strlen(query))) {
/* Usage or Version command line options */
if (argc > 1) {
if ( !strncmp(argv[1], "--help", 6)
|| !strncmp(argv[1], "-h", 2)
|| !strncmp(argv[1], "--check", 7)) ows_usage(o);
else if ( !strncmp(argv[1], "--version", 9)
|| !strncmp(argv[1], "-v", 2))
fprintf(stdout, "%s\n", TINYOWS_VERSION);
else ows_error(o, OWS_ERROR_INVALID_PARAMETER_VALUE, "Service Unknown", "service");
} else ows_error(o, OWS_ERROR_INVALID_PARAMETER_VALUE, "Service Unknown", "service");
o->exit=true; /* Have done what we have to */
}
if (!o->exit) o->request = ows_request_init();
if (!o->exit) ows_kvp_or_xml(o, query); /* Method is KVP or XML ? */
if (!o->exit) {
switch (o->request->method) {
case OWS_METHOD_KVP:
o->cgi = cgi_parse_kvp(o, query);
break;
case OWS_METHOD_XML:
o->cgi = cgi_parse_xml(o, query);
break;
default:
ows_error(o, OWS_ERROR_REQUEST_HTTP, "Wrong HTTP request Method", "http");
}
}
if (!o->exit) o->psql_requests = list_init();
if (!o->exit) ows_metadata_fill(o, o->cgi); /* Fill service's metadata */
if (!o->exit) ows_request_check(o, o->request, o->cgi, query); /* Process service request */
/* Run the right OWS service */
if (!o->exit) {
switch (o->request->service) {
case WFS:
o->request->request.wfs = wfs_request_init();
wfs_request_check(o, o->request->request.wfs, o->cgi);
if (!o->exit) wfs(o, o->request->request.wfs);
break;
default:
ows_error(o, OWS_ERROR_INVALID_PARAMETER_VALUE, "Service Unknown", "service");
}
}
if (o->request) {
ows_request_free(o->request);
o->request=NULL;
}
/* We allocated memory only on post case */
if (cgi_method_post() && query) free(query);
#if TINYOWS_FCGI
fflush(stdout);
o->exit = false;
}
ows_log(o, 2, "== FCGI SHUTDOWN ==");
OS_LibShutdown();
#endif
ows_log(o, 2, "== TINYOWS SHUTDOWN ==");
ows_free(o);
xmlCleanupParser();
return EXIT_SUCCESS;
}