Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 1 | /* |
| 2 | * ws protocol handler plugin for "fulltext demo" |
| 3 | * |
Andy Green | f7149e9 | 2019-05-01 07:57:56 +0100 | [diff] [blame] | 4 | * Written in 2010-2019 by Andy Green <andy@warmcat.com> |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 5 | * |
| 6 | * This file is made available under the Creative Commons CC0 1.0 |
| 7 | * Universal Public Domain Dedication. |
| 8 | * |
| 9 | * The person who associated a work with this deed has dedicated |
| 10 | * the work to the public domain by waiving all of his or her rights |
| 11 | * to the work worldwide under copyright law, including all related |
| 12 | * and neighboring rights, to the extent allowed by law. You can copy, |
| 13 | * modify, distribute and perform the work, even for commercial purposes, |
| 14 | * all without asking permission. |
| 15 | * |
| 16 | * These test plugins are intended to be adapted for use in your code, which |
| 17 | * may be proprietary. So unlike the library itself, they are licensed |
| 18 | * Public Domain. |
| 19 | */ |
| 20 | |
| 21 | #if !defined (LWS_PLUGIN_STATIC) |
Andy Green | 0e6df74 | 2021-01-31 05:50:12 +0000 | [diff] [blame] | 22 | #if !defined(LWS_DLL) |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 23 | #define LWS_DLL |
Andy Green | 0e6df74 | 2021-01-31 05:50:12 +0000 | [diff] [blame] | 24 | #endif |
| 25 | #if !defined(LWS_INTERNAL) |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 26 | #define LWS_INTERNAL |
Andy Green | 0e6df74 | 2021-01-31 05:50:12 +0000 | [diff] [blame] | 27 | #endif |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 28 | #include <libwebsockets.h> |
| 29 | #endif |
| 30 | |
| 31 | #include <stdlib.h> |
| 32 | #include <string.h> |
| 33 | #include <fcntl.h> |
| 34 | #include <sys/types.h> |
| 35 | #include <sys/stat.h> |
| 36 | #ifdef WIN32 |
| 37 | #include <io.h> |
| 38 | #endif |
| 39 | #include <stdio.h> |
| 40 | |
| 41 | struct vhd_fts_demo { |
| 42 | const char *indexpath; |
| 43 | }; |
| 44 | |
| 45 | struct pss_fts_demo { |
| 46 | struct lwsac *result; |
| 47 | struct lws_fts_result_autocomplete *ac; |
| 48 | struct lws_fts_result_filepath *fp; |
| 49 | |
| 50 | uint32_t *li; |
| 51 | int done; |
| 52 | |
| 53 | uint8_t first:1; |
| 54 | uint8_t ac_done:1; |
| 55 | |
| 56 | uint8_t fp_init_done:1; |
| 57 | }; |
| 58 | |
| 59 | static int |
| 60 | callback_fts(struct lws *wsi, enum lws_callback_reasons reason, void *user, |
| 61 | void *in, size_t len) |
| 62 | { |
| 63 | struct vhd_fts_demo *vhd = (struct vhd_fts_demo *) |
| 64 | lws_protocol_vh_priv_get(lws_get_vhost(wsi), |
| 65 | lws_get_protocol(wsi)); |
| 66 | struct pss_fts_demo *pss = (struct pss_fts_demo *)user; |
| 67 | uint8_t buf[LWS_PRE + 2048], *start = &buf[LWS_PRE], *p = start, |
| 68 | *end = &buf[sizeof(buf) - LWS_PRE - 1]; |
| 69 | struct lws_fts_search_params params; |
| 70 | const char *ccp = (const char *)in; |
| 71 | struct lws_fts_result *result; |
| 72 | struct lws_fts_file *jtf; |
| 73 | int n; |
| 74 | |
| 75 | switch (reason) { |
| 76 | |
| 77 | case LWS_CALLBACK_PROTOCOL_INIT: |
| 78 | vhd = lws_protocol_vh_priv_zalloc(lws_get_vhost(wsi), |
| 79 | lws_get_protocol(wsi),sizeof(struct vhd_fts_demo)); |
| 80 | if (!vhd) |
Andy Green | 6497220 | 2021-01-25 11:40:54 +0000 | [diff] [blame] | 81 | return 0; |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 82 | if (lws_pvo_get_str(in, "indexpath", |
| 83 | (const char **)&vhd->indexpath)) |
| 84 | return 1; |
| 85 | |
| 86 | return 0; |
| 87 | |
| 88 | case LWS_CALLBACK_HTTP: |
| 89 | |
| 90 | pss->first = 1; |
| 91 | pss->ac_done = 0; |
| 92 | |
| 93 | /* |
| 94 | * we have a "subdirectory" selecting the task |
| 95 | * |
| 96 | * /a/ = autocomplete |
| 97 | * /r/ = results |
| 98 | */ |
| 99 | |
| 100 | if (strncmp(ccp, "/a/", 3) && strncmp(ccp, "/r/", 3)) |
| 101 | goto reply_404; |
| 102 | |
| 103 | memset(¶ms, 0, sizeof(params)); |
| 104 | |
| 105 | params.needle = ccp + 3; |
| 106 | if (*(ccp + 1) == 'a') |
| 107 | params.flags = LWSFTS_F_QUERY_AUTOCOMPLETE; |
| 108 | if (*(ccp + 1) == 'r') |
| 109 | params.flags = LWSFTS_F_QUERY_FILES | |
| 110 | LWSFTS_F_QUERY_FILE_LINES | |
| 111 | LWSFTS_F_QUERY_QUOTE_LINE; |
| 112 | params.max_autocomplete = 10; |
| 113 | params.max_files = 10; |
| 114 | |
| 115 | jtf = lws_fts_open(vhd->indexpath); |
| 116 | if (!jtf) { |
| 117 | lwsl_err("unable to open %s\n", vhd->indexpath); |
| 118 | /* we'll inform the client in the JSON */ |
| 119 | goto reply_200; |
| 120 | } |
| 121 | |
| 122 | result = lws_fts_search(jtf, ¶ms); |
| 123 | lws_fts_close(jtf); |
| 124 | if (result) { |
| 125 | pss->result = params.results_head; |
| 126 | pss->ac = result->autocomplete_head; |
| 127 | pss->fp = result->filepath_head; |
| 128 | } |
| 129 | /* NULL result will be told in the json as "indexed": 0 */ |
| 130 | |
| 131 | reply_200: |
| 132 | if (lws_add_http_common_headers(wsi, HTTP_STATUS_OK, |
| 133 | "text/html", |
| 134 | LWS_ILLEGAL_HTTP_CONTENT_LEN, &p, end)) |
| 135 | return 1; |
| 136 | |
| 137 | if (lws_finalize_write_http_header(wsi, start, &p, end)) |
| 138 | return 1; |
| 139 | |
| 140 | lws_callback_on_writable(wsi); |
| 141 | return 0; |
| 142 | |
| 143 | reply_404: |
| 144 | if (lws_add_http_common_headers(wsi, HTTP_STATUS_NOT_FOUND, |
| 145 | "text/html", |
| 146 | LWS_ILLEGAL_HTTP_CONTENT_LEN, &p, end)) |
| 147 | return 1; |
| 148 | |
| 149 | if (lws_finalize_write_http_header(wsi, start, &p, end)) |
| 150 | return 1; |
| 151 | return lws_http_transaction_completed(wsi); |
| 152 | |
| 153 | case LWS_CALLBACK_CLOSED_HTTP: |
| 154 | if (pss && pss->result) |
| 155 | lwsac_free(&pss->result); |
| 156 | break; |
| 157 | |
| 158 | case LWS_CALLBACK_HTTP_WRITEABLE: |
| 159 | |
| 160 | if (!pss) |
| 161 | break; |
| 162 | |
| 163 | n = LWS_WRITE_HTTP; |
| 164 | if (pss->first) |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 165 | p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 166 | "{\"indexed\": %d, \"ac\": [", !!pss->result); |
| 167 | |
| 168 | while (pss->ac && lws_ptr_diff(end, p) > 256) { |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 169 | p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 170 | "%c{\"ac\": \"%s\",\"matches\": %d," |
| 171 | "\"agg\": %d, \"elided\": %d}", |
| 172 | pss->first ? ' ' : ',', (char *)(pss->ac + 1), |
| 173 | pss->ac->instances, pss->ac->agg_instances, |
| 174 | pss->ac->elided); |
| 175 | |
| 176 | pss->first = 0; |
| 177 | pss->ac = pss->ac->next; |
| 178 | } |
| 179 | |
| 180 | if (!pss->ac_done && !pss->ac && pss->fp) { |
| 181 | pss->ac_done = 1; |
| 182 | |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 183 | p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 184 | "], \"fp\": ["); |
| 185 | } |
| 186 | |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 187 | while (pss->fp && lws_ptr_diff_size_t(end, p) > 256) { |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 188 | if (!pss->fp_init_done) { |
| 189 | p += lws_snprintf((char *)p, |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 190 | lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 191 | "%c{\"path\": \"%s\",\"matches\": %d," |
| 192 | "\"origlines\": %d," |
| 193 | "\"hits\": [", pss->first ? ' ' : ',', |
| 194 | ((char *)(pss->fp + 1)) + |
| 195 | pss->fp->matches_length, |
| 196 | pss->fp->matches, |
| 197 | pss->fp->lines_in_file); |
| 198 | |
| 199 | pss->li = ((uint32_t *)(pss->fp + 1)); |
| 200 | pss->done = 0; |
| 201 | pss->fp_init_done = 1; |
| 202 | pss->first = 0; |
| 203 | } else { |
| 204 | while (pss->done < pss->fp->matches && |
| 205 | lws_ptr_diff(end, p) > 256) { |
| 206 | |
| 207 | p += lws_snprintf((char *)p, |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 208 | lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 209 | "%c\n{\"l\":%d,\"o\":%d," |
| 210 | "\"s\":\"%s\"}", |
| 211 | !pss->done ? ' ' : ',', |
| 212 | pss->li[0], pss->li[1], |
| 213 | *((const char **)&pss->li[2])); |
| 214 | pss->li += 2 + (sizeof(const char *) / |
| 215 | sizeof(uint32_t)); |
| 216 | pss->done++; |
| 217 | } |
| 218 | |
| 219 | if (pss->done == pss->fp->matches) { |
| 220 | *p++ = ']'; |
| 221 | pss->fp_init_done = 0; |
| 222 | pss->fp = pss->fp->next; |
| 223 | if (!pss->fp) |
| 224 | *p++ = '}'; |
| 225 | } |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | if (!pss->ac && !pss->fp) { |
| 230 | n = LWS_WRITE_HTTP_FINAL; |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 231 | p += lws_snprintf((char *)p, lws_ptr_diff_size_t(end, p), |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 232 | "]}"); |
| 233 | } |
| 234 | |
| 235 | if (lws_write(wsi, (uint8_t *)start, |
Andy Green | c9731c5 | 2020-12-12 06:21:40 +0000 | [diff] [blame] | 236 | lws_ptr_diff_size_t(p, start), (enum lws_write_protocol)n) != |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 237 | lws_ptr_diff(p, start)) |
| 238 | return 1; |
| 239 | |
| 240 | if (n == LWS_WRITE_HTTP_FINAL) { |
| 241 | if (pss->result) |
| 242 | lwsac_free(&pss->result); |
| 243 | if (lws_http_transaction_completed(wsi)) |
| 244 | return -1; |
| 245 | } else |
| 246 | lws_callback_on_writable(wsi); |
| 247 | |
| 248 | return 0; |
| 249 | |
| 250 | default: |
| 251 | break; |
| 252 | } |
| 253 | |
| 254 | return lws_callback_http_dummy(wsi, reason, user, in, len); |
| 255 | } |
| 256 | |
| 257 | |
| 258 | #define LWS_PLUGIN_PROTOCOL_FULLTEXT_DEMO \ |
| 259 | { \ |
| 260 | "lws-test-fts", \ |
| 261 | callback_fts, \ |
| 262 | sizeof(struct pss_fts_demo), \ |
| 263 | 0, \ |
| 264 | 0, NULL, 0 \ |
| 265 | } |
| 266 | |
| 267 | #if !defined (LWS_PLUGIN_STATIC) |
| 268 | |
Andy Green | 0e6df74 | 2021-01-31 05:50:12 +0000 | [diff] [blame] | 269 | LWS_VISIBLE const struct lws_protocols fulltext_demo_protocols[] = { |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 270 | LWS_PLUGIN_PROTOCOL_FULLTEXT_DEMO |
| 271 | }; |
| 272 | |
Andy Green | 8d88d2f | 2020-10-09 21:06:07 +0100 | [diff] [blame] | 273 | LWS_VISIBLE const lws_plugin_protocol_t fulltext_demo = { |
Andy Green | d98101d | 2020-08-27 09:34:35 +0100 | [diff] [blame] | 274 | .hdr = { |
| 275 | "fulltext demo", |
| 276 | "lws_protocol_plugin", |
Andy Green | 6497220 | 2021-01-25 11:40:54 +0000 | [diff] [blame] | 277 | LWS_BUILD_HASH, |
Andy Green | d98101d | 2020-08-27 09:34:35 +0100 | [diff] [blame] | 278 | LWS_PLUGIN_API_MAGIC |
| 279 | }, |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 280 | |
Andy Green | 0e6df74 | 2021-01-31 05:50:12 +0000 | [diff] [blame] | 281 | .protocols = fulltext_demo_protocols, |
| 282 | .count_protocols = LWS_ARRAY_SIZE(fulltext_demo_protocols), |
Andy Green | d98101d | 2020-08-27 09:34:35 +0100 | [diff] [blame] | 283 | .extensions = NULL, |
| 284 | .count_extensions = 0, |
| 285 | }; |
Andy Green | d3bc2c3 | 2018-10-14 11:38:08 +0800 | [diff] [blame] | 286 | |
| 287 | #endif |