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106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/* radare - LGPL - Copyright 2006-2018 pancake */
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#include "r_search.h"
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// TODO: this file needs some love
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enum {
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ENCODING_ASCII = 0,
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ENCODING_CP850 = 1
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};
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static char *encodings[3] = { "ascii", "cp850", NULL };
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//static int encoding = ENCODING_ASCII; // default
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//encoding = resolve_encoding(config_get("cfg.encoding"));
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R_API int r_search_get_encoding(const char *name) {
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int i;
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if (!name || !*name) {
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return ENCODING_ASCII;
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}
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ut32 lename = strlen (name);
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for (i = 0; encodings[i]; i++) {
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ut32 sz = R_MIN (strlen (encodings[i]), lename);
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if (!r_str_ncasecmp (name, encodings[i], sz)) {
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return i;
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}
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}
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return ENCODING_ASCII;
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}
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static bool is_encoded(int encoding, unsigned char c) {
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switch (encoding) {
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case ENCODING_ASCII:
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break;
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case ENCODING_CP850:
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switch (c) {
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// CP850
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case 128: // cedilla
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case 133: // a grave
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case 135: // minicedilla
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case 160: // a acute
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case 161: // i acute
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case 129: // u dieresi
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case 130: // e acute
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case 139: // i dieresi
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case 162: // o acute
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case 163: // u acute
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case 164: // enye
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case 165: // enyemay
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case 181: // A acute
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case 144: // E acute
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case 214: // I acute
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case 224: // O acute
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case 233: // U acute
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return true;
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}
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break;
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}
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return false;
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}
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R_API int r_search_strings_update(RSearch *s, ut64 from, const ut8 *buf, int len) {
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int i = 0;
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int widechar = 0;
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int matches = 0;
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char str[4096];
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RListIter *iter;
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RSearchKeyword *kw;
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r_list_foreach (s->kws, iter, kw) {
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for (i = 0; i < len; i++) {
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char ch = buf[i];
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// non-cp850 encoded
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if (IS_PRINTABLE(ch) || IS_WHITESPACE(ch) || is_encoded (0, ch)) {
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str[matches] = ch;
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if (matches < sizeof (str)) {
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matches++;
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}
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} else {
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/* wide char check \x??\x00\x??\x00 */
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if (matches && i + 2 < len && buf[i+2]=='\0' && buf[i]=='\0' && buf[i+1]!='\0') {
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// widechar = 1;
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return 1; // widechar
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}
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/* check if the length fits on our request */
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if (matches >= s->string_min && (s->string_max == 0 || matches <= s->string_max)) {
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str[matches] = '\0';
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int len = strlen(str);
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if (len>2) {
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if (widechar) {
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ut64 off = (ut64)from+i-(len*2)+1;
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r_search_hit_new (s, kw, off);
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} else {
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ut64 off = (ut64)from+i-matches;
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r_search_hit_new (s, kw, off);
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}
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}
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fflush (stdout);
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}
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matches = 0;
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widechar = 0;
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}
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}
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}
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return 0;
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}
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