comparison: src/server/plugins/postgresql/service.c
src/server/plugins/postgresql/service.c
- changeset 385
- a1f4cb076d2f
- parent 278
- 38bf7b42b58c
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| 210:21274e5950af | 385:a1f4cb076d2f |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2022 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include "service.h" | |
| 30 | |
| 31 #include <stdio.h> | |
| 32 #include <string.h> | |
| 33 | |
| 34 #include "resource.h" | |
| 35 | |
| 36 int pg_query(pblock *pb, Session *sn, Request *rq) { | |
| 37 char *respool = pblock_findval("resource", pb); | |
| 38 char *query = pblock_findval("query", pb); | |
| 39 | |
| 40 if(!respool) { | |
| 41 log_ereport(LOG_MISCONFIG, "pg-query: missing resource parameter"); | |
| 42 return REQ_ABORTED; | |
| 43 } | |
| 44 if(!query) { | |
| 45 log_ereport(LOG_MISCONFIG, "pg-query: missing query parameter"); | |
| 46 return REQ_ABORTED; | |
| 47 } | |
| 48 | |
| 49 // Get the named resource and check if the PG connection works | |
| 50 ResourceData *res = resourcepool_lookup(sn, rq, respool, 0); | |
| 51 if(!res) { | |
| 52 log_ereport(LOG_FAILURE, "pg-query: cannot get resource '%s'", respool); | |
| 53 return REQ_ABORTED; | |
| 54 } | |
| 55 | |
| 56 PGconn *connection = res->data; | |
| 57 if(pg_check_connection(LOG_FAILURE, respool, connection)) { | |
| 58 return REQ_ABORTED; | |
| 59 } | |
| 60 | |
| 61 // execute query | |
| 62 PGresult *result = PQexec(connection, query); | |
| 63 if(!result) return REQ_ABORTED; | |
| 64 | |
| 65 // start response | |
| 66 pblock_remove("content-type", rq->srvhdrs); | |
| 67 pblock_nvinsert("content-type", "text/html", rq->srvhdrs); | |
| 68 | |
| 69 protocol_status(sn, rq, 200, NULL); | |
| 70 http_start_response(sn, rq); | |
| 71 | |
| 72 // (html) header | |
| 73 net_printf(sn->csd, "%s", "<!DOCTYPE html>\n<html><head></head><body>\n"); | |
| 74 | |
| 75 int nfields = PQnfields(result); | |
| 76 if(nfields > 0) { | |
| 77 net_printf(sn->csd, "<table>\n<tr>\n"); | |
| 78 for(int i=0;i<nfields;i++) { | |
| 79 char *fieldName = PQfname(result, i); | |
| 80 char *fieldNameEscaped = util_html_escape(fieldName); | |
| 81 if(fieldNameEscaped) { | |
| 82 net_printf(sn->csd, "<th>%s</th>\n", fieldNameEscaped); | |
| 83 FREE(fieldNameEscaped); | |
| 84 } | |
| 85 } | |
| 86 net_printf(sn->csd, "</tr>\n"); | |
| 87 | |
| 88 int nrows = PQntuples(result); | |
| 89 for(int r=0;r<nrows;r++) { | |
| 90 net_printf(sn->csd, "<tr>\n"); | |
| 91 for(int c=0;c<nfields;c++) { | |
| 92 char *fieldValue = PQgetvalue(result, r, c); | |
| 93 char *fieldValueEscaped = util_html_escape(fieldValue); | |
| 94 if(fieldValueEscaped) { | |
| 95 net_printf(sn->csd, "<td>%s</td>\n", fieldValueEscaped); | |
| 96 FREE(fieldValueEscaped); | |
| 97 } | |
| 98 } | |
| 99 net_printf(sn->csd, "</tr>\n"); | |
| 100 } | |
| 101 | |
| 102 | |
| 103 net_printf(sn->csd, "</table>\n"); | |
| 104 } else { | |
| 105 net_printf(sn->csd, "<p>%s</p>\n", PQresStatus(PQresultStatus(result))); | |
| 106 } | |
| 107 | |
| 108 net_printf(sn->csd, "%s", "</body></html>\n"); | |
| 109 | |
| 110 PQclear(result); | |
| 111 | |
| 112 return REQ_PROCEED; | |
| 113 } |
