| File: | content/fetchers/about/websearch.c |
| Warning: | line 66, column 7 Value stored to 'kvlen' is never read |
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| 1 | /* |
| 2 | * Copyright 2020 Vincent Sanders <vince@netsurf-browser.org> |
| 3 | * |
| 4 | * This file is part of NetSurf. |
| 5 | * |
| 6 | * NetSurf is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * NetSurf is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | |
| 19 | /** |
| 20 | * \file |
| 21 | * content generator for the about scheme web search |
| 22 | */ |
| 23 | |
| 24 | #include <stdbool.h> |
| 25 | #include <stdint.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
| 29 | |
| 30 | #include "utils/errors.h" |
| 31 | #include "utils/nsurl.h" |
| 32 | #include "utils/url.h" |
| 33 | |
| 34 | #include "content/fetch.h" |
| 35 | #include "desktop/searchweb.h" |
| 36 | |
| 37 | #include "private.h" |
| 38 | #include "websearch.h" |
| 39 | |
| 40 | static nserror |
| 41 | process_query_section(const char *str, size_t len, char **term) |
| 42 | { |
| 43 | if (len < 3) { |
| 44 | return NSERROR_BAD_PARAMETER; |
| 45 | } |
| 46 | if (str[0] != 'q' || str[1] != '=') { |
| 47 | return NSERROR_BAD_PARAMETER; |
| 48 | } |
| 49 | return url_unescape(str + 2, len - 2, NULL((void*)0), term); |
| 50 | } |
| 51 | |
| 52 | static nserror |
| 53 | searchterm_from_query(struct nsurl *url, char **term) |
| 54 | { |
| 55 | nserror res; |
| 56 | char *querystr; |
| 57 | size_t querylen; |
| 58 | size_t kvstart;/* key value start */ |
| 59 | size_t kvlen; /* key value end */ |
| 60 | |
| 61 | res = nsurl_get(url, NSURL_QUERY, &querystr, &querylen); |
| 62 | if (res != NSERROR_OK) { |
| 63 | return res; |
| 64 | } |
| 65 | |
| 66 | for (kvlen = 0, kvstart = 0; kvstart < querylen; kvstart += kvlen) { |
Value stored to 'kvlen' is never read | |
| 67 | /* get query section length */ |
| 68 | kvlen = 0; |
| 69 | while (((kvstart + kvlen) < querylen) && |
| 70 | (querystr[kvstart + kvlen] != '&')) { |
| 71 | kvlen++; |
| 72 | } |
| 73 | |
| 74 | res = process_query_section(querystr + kvstart, kvlen, term); |
| 75 | if (res == NSERROR_OK) { |
| 76 | break; |
| 77 | } |
| 78 | kvlen++; /* account for & separator */ |
| 79 | } |
| 80 | free(querystr); |
| 81 | |
| 82 | return res; |
| 83 | } |
| 84 | |
| 85 | bool_Bool fetch_about_websearch_handler(struct fetch_about_context *ctx) |
| 86 | { |
| 87 | nserror res; |
| 88 | nsurl *url; |
| 89 | char *term; |
| 90 | |
| 91 | res = searchterm_from_query(fetch_about_get_url(ctx), &term); |
| 92 | if (res != NSERROR_OK) { |
| 93 | return false0; |
| 94 | } |
| 95 | |
| 96 | res = search_web_omni(term, SEARCH_WEB_OMNI_SEARCHONLY, &url); |
| 97 | free(term); |
| 98 | if (res != NSERROR_OK) { |
| 99 | return false0; |
| 100 | } |
| 101 | |
| 102 | fetch_about_redirect(ctx, nsurl_access(url)); |
| 103 | nsurl_unref(url); |
| 104 | |
| 105 | return true1; |
| 106 | } |