mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
c9731c5f17
This is a huge patch that should be a global NOP. For unix type platforms it enables -Wconversion to issue warnings (-> error) for all automatic casts that seem less than ideal but are normally concealed by the toolchain. This is things like passing an int to a size_t argument. Once enabled, I went through all args on my default build (which build most things) and tried to make the removed default cast explicit. With that approach it neither change nor bloat the code, since it compiles to whatever it was doing before, just with the casts made explicit... in a few cases I changed some length args from int to size_t but largely left the causes alone. From now on, new code that is relying on less than ideal casting will complain and nudge me to improve it by warnings.
282 lines
6.6 KiB
C
282 lines
6.6 KiB
C
/*
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* ws protocol handler plugin for "fulltext demo"
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*
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* Written in 2010-2019 by Andy Green <andy@warmcat.com>
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*
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* This file is made available under the Creative Commons CC0 1.0
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* Universal Public Domain Dedication.
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*
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* The person who associated a work with this deed has dedicated
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* the work to the public domain by waiving all of his or her rights
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* to the work worldwide under copyright law, including all related
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* and neighboring rights, to the extent allowed by law. You can copy,
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* modify, distribute and perform the work, even for commercial purposes,
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* all without asking permission.
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*
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* These test plugins are intended to be adapted for use in your code, which
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* may be proprietary. So unlike the library itself, they are licensed
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* Public Domain.
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*/
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#if !defined (LWS_PLUGIN_STATIC)
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#define LWS_DLL
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#define LWS_INTERNAL
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#include <libwebsockets.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef WIN32
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#include <io.h>
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#endif
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#include <stdio.h>
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struct vhd_fts_demo {
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const char *indexpath;
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};
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struct pss_fts_demo {
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struct lwsac *result;
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struct lws_fts_result_autocomplete *ac;
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struct lws_fts_result_filepath *fp;
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uint32_t *li;
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int done;
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uint8_t first:1;
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uint8_t ac_done:1;
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uint8_t fp_init_done:1;
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};
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static int
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callback_fts(struct lws *wsi, enum lws_callback_reasons reason, void *user,
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void *in, size_t len)
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{
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struct vhd_fts_demo *vhd = (struct vhd_fts_demo *)
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lws_protocol_vh_priv_get(lws_get_vhost(wsi),
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lws_get_protocol(wsi));
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struct pss_fts_demo *pss = (struct pss_fts_demo *)user;
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uint8_t buf[LWS_PRE + 2048], *start = &buf[LWS_PRE], *p = start,
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*end = &buf[sizeof(buf) - LWS_PRE - 1];
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struct lws_fts_search_params params;
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const char *ccp = (const char *)in;
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struct lws_fts_result *result;
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struct lws_fts_file *jtf;
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int n;
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switch (reason) {
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case LWS_CALLBACK_PROTOCOL_INIT:
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vhd = lws_protocol_vh_priv_zalloc(lws_get_vhost(wsi),
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lws_get_protocol(wsi),sizeof(struct vhd_fts_demo));
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if (!vhd)
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return 1;
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if (lws_pvo_get_str(in, "indexpath",
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(const char **)&vhd->indexpath))
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return 1;
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return 0;
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case LWS_CALLBACK_HTTP:
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pss->first = 1;
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pss->ac_done = 0;
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/*
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* we have a "subdirectory" selecting the task
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*
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* /a/ = autocomplete
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* /r/ = results
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*/
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if (strncmp(ccp, "/a/", 3) && strncmp(ccp, "/r/", 3))
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goto reply_404;
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memset(¶ms, 0, sizeof(params));
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params.needle = ccp + 3;
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if (*(ccp + 1) == 'a')
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params.flags = LWSFTS_F_QUERY_AUTOCOMPLETE;
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if (*(ccp + 1) == 'r')
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params.flags = LWSFTS_F_QUERY_FILES |
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LWSFTS_F_QUERY_FILE_LINES |
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LWSFTS_F_QUERY_QUOTE_LINE;
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params.max_autocomplete = 10;
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params.max_files = 10;
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jtf = lws_fts_open(vhd->indexpath);
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if (!jtf) {
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lwsl_err("unable to open %s\n", vhd->indexpath);
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/* we'll inform the client in the JSON */
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goto reply_200;
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}
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result = lws_fts_search(jtf, ¶ms);
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lws_fts_close(jtf);
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if (result) {
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pss->result = params.results_head;
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pss->ac = result->autocomplete_head;
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pss->fp = result->filepath_head;
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}
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/* NULL result will be told in the json as "indexed": 0 */
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reply_200:
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if (lws_add_http_common_headers(wsi, HTTP_STATUS_OK,
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"text/html",
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LWS_ILLEGAL_HTTP_CONTENT_LEN, &p, end))
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return 1;
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if (lws_finalize_write_http_header(wsi, start, &p, end))
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return 1;
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lws_callback_on_writable(wsi);
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return 0;
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reply_404:
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if (lws_add_http_common_headers(wsi, HTTP_STATUS_NOT_FOUND,
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"text/html",
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LWS_ILLEGAL_HTTP_CONTENT_LEN, &p, end))
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return 1;
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if (lws_finalize_write_http_header(wsi, start, &p, end))
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return 1;
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return lws_http_transaction_completed(wsi);
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case LWS_CALLBACK_CLOSED_HTTP:
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if (pss && pss->result)
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lwsac_free(&pss->result);
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break;
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case LWS_CALLBACK_HTTP_WRITEABLE:
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if (!pss)
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break;
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n = LWS_WRITE_HTTP;
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if (pss->first)
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p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p),
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"{\"indexed\": %d, \"ac\": [", !!pss->result);
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while (pss->ac && lws_ptr_diff(end, p) > 256) {
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p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p),
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"%c{\"ac\": \"%s\",\"matches\": %d,"
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"\"agg\": %d, \"elided\": %d}",
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pss->first ? ' ' : ',', (char *)(pss->ac + 1),
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pss->ac->instances, pss->ac->agg_instances,
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pss->ac->elided);
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pss->first = 0;
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pss->ac = pss->ac->next;
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}
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if (!pss->ac_done && !pss->ac && pss->fp) {
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pss->ac_done = 1;
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p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p),
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"], \"fp\": [");
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}
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while (pss->fp && lws_ptr_diff_size_t(end, p) > 256) {
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if (!pss->fp_init_done) {
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p += lws_snprintf((char *)p,
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lws_ptr_diff_size_t(end, p),
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"%c{\"path\": \"%s\",\"matches\": %d,"
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"\"origlines\": %d,"
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"\"hits\": [", pss->first ? ' ' : ',',
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((char *)(pss->fp + 1)) +
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pss->fp->matches_length,
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pss->fp->matches,
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pss->fp->lines_in_file);
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pss->li = ((uint32_t *)(pss->fp + 1));
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pss->done = 0;
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pss->fp_init_done = 1;
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pss->first = 0;
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} else {
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while (pss->done < pss->fp->matches &&
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lws_ptr_diff(end, p) > 256) {
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p += lws_snprintf((char *)p,
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lws_ptr_diff_size_t(end, p),
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"%c\n{\"l\":%d,\"o\":%d,"
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"\"s\":\"%s\"}",
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!pss->done ? ' ' : ',',
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pss->li[0], pss->li[1],
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*((const char **)&pss->li[2]));
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pss->li += 2 + (sizeof(const char *) /
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sizeof(uint32_t));
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pss->done++;
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}
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if (pss->done == pss->fp->matches) {
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*p++ = ']';
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pss->fp_init_done = 0;
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pss->fp = pss->fp->next;
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if (!pss->fp)
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*p++ = '}';
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}
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}
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}
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if (!pss->ac && !pss->fp) {
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n = LWS_WRITE_HTTP_FINAL;
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p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p),
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"]}");
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}
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if (lws_write(wsi, (uint8_t *)start,
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lws_ptr_diff_size_t(p, start), (enum lws_write_protocol)n) !=
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lws_ptr_diff(p, start))
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return 1;
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if (n == LWS_WRITE_HTTP_FINAL) {
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if (pss->result)
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lwsac_free(&pss->result);
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if (lws_http_transaction_completed(wsi))
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return -1;
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} else
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lws_callback_on_writable(wsi);
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return 0;
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default:
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break;
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}
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return lws_callback_http_dummy(wsi, reason, user, in, len);
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}
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#define LWS_PLUGIN_PROTOCOL_FULLTEXT_DEMO \
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{ \
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"lws-test-fts", \
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callback_fts, \
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sizeof(struct pss_fts_demo), \
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0, \
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0, NULL, 0 \
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}
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#if !defined (LWS_PLUGIN_STATIC)
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static const struct lws_protocols protocols[] = {
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LWS_PLUGIN_PROTOCOL_FULLTEXT_DEMO
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};
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LWS_VISIBLE const lws_plugin_protocol_t fulltext_demo = {
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.hdr = {
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"fulltext demo",
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"lws_protocol_plugin",
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LWS_PLUGIN_API_MAGIC
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},
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.protocols = protocols,
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.count_protocols = LWS_ARRAY_SIZE(protocols),
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.extensions = NULL,
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.count_extensions = 0,
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};
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#endif
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