- Timestamp:
- 06/17/11 13:51:31 (14 years ago)
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
trunk/lib/regfi.c
r261 r262 1186 1186 * when recovering deleted VK records. 1187 1187 */ 1188 int32_t tmp_size;1188 REGFI_BUFFER tmp_buf; 1189 1189 REGFI_ENCODING from_encoding = (vk->flags & REGFI_VK_FLAG_ASCIINAME) 1190 1190 ? REGFI_ENCODING_ASCII : REGFI_ENCODING_UTF16LE; … … 1200 1200 else 1201 1201 { 1202 vk->name = talloc_array(vk, char, vk->name_length+1); 1203 if(vk->name == NULL) 1204 return; 1205 1206 tmp_size = regfi_conv_charset(regfi_encoding_int2str(from_encoding), 1207 regfi_encoding_int2str(output_encoding), 1208 vk->name_raw, vk->name, 1209 vk->name_length, vk->name_length+1); 1210 if(tmp_size < 0) 1202 tmp_buf = regfi_conv_charset(regfi_encoding_int2str(from_encoding), 1203 regfi_encoding_int2str(output_encoding), 1204 vk->name_raw, vk->name_length); 1205 if(tmp_buf.buf == NULL) 1211 1206 { 1212 1207 regfi_log_add(REGFI_LOG_WARN, "Error occurred while converting" 1213 1208 " value name to encoding %s. Error message: %s", 1214 1209 regfi_encoding_int2str(output_encoding), 1215 strerror(-tmp_size)); 1216 talloc_free(vk->name); 1210 strerror(errno)); 1217 1211 vk->name = NULL; 1212 } 1213 else 1214 { 1215 vk->name = (char*)tmp_buf.buf; 1216 talloc_reparent(NULL, vk, vk->name); 1218 1217 } 1219 1218 } … … 1280 1279 * when recovering deleted NK records. 1281 1280 */ 1282 int32_t tmp_size;1281 REGFI_BUFFER tmp_buf; 1283 1282 REGFI_ENCODING from_encoding = (nk->flags & REGFI_NK_FLAG_ASCIINAME) 1284 1283 ? REGFI_ENCODING_ASCII : REGFI_ENCODING_UTF16LE; … … 1294 1293 else 1295 1294 { 1296 nk->name = talloc_array(nk, char, nk->name_length+1); 1297 if(nk->name == NULL) 1298 return; 1299 1300 memset(nk->name,0,nk->name_length+1); 1301 1302 tmp_size = regfi_conv_charset(regfi_encoding_int2str(from_encoding), 1303 regfi_encoding_int2str(output_encoding), 1304 nk->name_raw, nk->name, 1305 nk->name_length, nk->name_length+1); 1306 if(tmp_size < 0) 1295 tmp_buf = regfi_conv_charset(regfi_encoding_int2str(from_encoding), 1296 regfi_encoding_int2str(output_encoding), 1297 nk->name_raw, nk->name_length); 1298 if(tmp_buf.buf == NULL) 1307 1299 { 1308 1300 regfi_log_add(REGFI_LOG_WARN, "Error occurred while converting" 1309 " key name to encoding %s. Error message: %s", 1310 regfi_encoding_int2str(output_encoding), 1311 strerror(-tmp_size)); 1312 talloc_free(nk->name); 1301 " key name to encoding %s. Error message: %s", 1302 regfi_encoding_int2str(output_encoding), 1303 strerror(errno)); 1313 1304 nk->name = NULL; 1305 } 1306 else 1307 { 1308 nk->name = (char*)tmp_buf.buf; 1309 talloc_reparent(NULL, nk, nk->name); 1314 1310 } 1315 1311 } … … 2243 2239 REGFI_CLASSNAME* ret_val; 2244 2240 uint8_t* raw; 2245 char* interpreted;2241 REGFI_BUFFER tmp_buf; 2246 2242 uint32_t offset; 2247 int32_t conv_size,max_size;2243 int32_t max_size; 2248 2244 uint16_t parse_length; 2249 2245 … … 2276 2272 talloc_reparent(NULL, ret_val, raw); 2277 2273 2278 interpreted = talloc_array(NULL, char, parse_length); 2279 2280 conv_size = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2281 regfi_encoding_int2str(file->string_encoding), 2282 raw, interpreted, 2283 parse_length, parse_length); 2284 if(conv_size < 0) 2274 tmp_buf = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2275 regfi_encoding_int2str(file->string_encoding), 2276 raw, parse_length); 2277 if(tmp_buf.buf == NULL) 2285 2278 { 2286 2279 regfi_log_add(REGFI_LOG_WARN, "Error occurred while" 2287 2280 " converting classname to charset %s. Error message: %s", 2288 file->string_encoding, strerror(-conv_size)); 2289 talloc_free(interpreted); 2281 file->string_encoding, strerror(errno)); 2290 2282 ret_val->interpreted = NULL; 2291 2283 } 2292 2284 else 2293 2285 { 2294 /* XXX: check for NULL return here? */ 2295 interpreted = talloc_realloc(NULL, interpreted, char, conv_size); 2296 ret_val->interpreted = interpreted; 2297 talloc_reparent(NULL, ret_val, interpreted); 2286 ret_val->interpreted = (char*)tmp_buf.buf; 2287 talloc_reparent(NULL, ret_val, tmp_buf.buf); 2298 2288 } 2299 2289 … … 2365 2355 return false; 2366 2356 2357 /* XXX: Should lazily build a hash table in memory to index where keys are when 2358 * there are a large number of subkeys. Attach this to cached keys to 2359 * bound the extra amount of memory used. 2360 */ 2367 2361 for(i=0; (i < num_subkeys) && (found == false); i++) 2368 2362 { … … 2396 2390 bool found = false; 2397 2391 2392 /* XXX: Should lazily build a hash table in memory to index where values are when 2393 * there are a large number of them. Attach this to cached keys to 2394 * bound the extra amount of memory used. 2395 */ 2398 2396 for(i=0; (i < num_values) && (found == false); i++) 2399 2397 { … … 2494 2492 uint32_t type, REGFI_DATA* data) 2495 2493 { 2494 REGFI_BUFFER tmp_buf; 2496 2495 uint8_t** tmp_array; 2497 uint8_t* tmp_str; 2498 int32_t tmp_size; 2499 uint32_t i, j, array_size; 2496 uint32_t i, j; 2500 2497 2501 2498 if(data == NULL) … … 2508 2505 /* REG_LINK is a symbolic link, stored as a unicode string. */ 2509 2506 case REG_LINK: 2510 tmp_str = talloc_array(NULL, uint8_t, data->size); 2511 if(tmp_str == NULL) 2512 { 2507 tmp_buf = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2508 regfi_encoding_int2str(string_encoding), 2509 data->raw, data->size); 2510 if(tmp_buf.buf == NULL) 2511 { 2512 regfi_log_add(REGFI_LOG_INFO, "Error occurred while" 2513 " converting data of type %d to string encoding %d." 2514 " Error message: %s", 2515 type, string_encoding, strerror(errno)); 2513 2516 data->interpreted.string = NULL; 2514 2517 data->interpreted_size = 0; 2515 2518 return false; 2516 2519 } 2517 2518 tmp_size = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2519 regfi_encoding_int2str(string_encoding), 2520 data->raw, (char*)tmp_str, 2521 data->size, data->size); 2522 if(tmp_size < 0) 2523 { 2524 regfi_log_add(REGFI_LOG_INFO, "Error occurred while" 2525 " converting data of type %d to %d. Error message: %s", 2526 type, string_encoding, strerror(-tmp_size)); 2527 talloc_free(tmp_str); 2528 data->interpreted.string = NULL; 2529 data->interpreted_size = 0; 2530 return false; 2531 } 2532 2533 tmp_str = talloc_realloc(NULL, tmp_str, uint8_t, tmp_size); 2534 if(tmp_str == NULL) 2535 return false; 2536 data->interpreted.string = tmp_str; 2537 data->interpreted_size = tmp_size; 2538 talloc_reparent(NULL, data, tmp_str); 2520 2521 data->interpreted.string = tmp_buf.buf; 2522 data->interpreted_size = tmp_buf.len; 2523 talloc_reparent(NULL, data, tmp_buf.buf); 2539 2524 break; 2540 2525 … … 2574 2559 2575 2560 case REG_MULTI_SZ: 2576 tmp_str = talloc_array(NULL, uint8_t, data->size); 2577 if(tmp_str == NULL) 2578 { 2561 /* Attempt to convert entire string from UTF-16LE to output encoding, 2562 * then parse and quote fields individually. 2563 */ 2564 tmp_buf = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2565 regfi_encoding_int2str(string_encoding), 2566 data->raw, data->size); 2567 if(tmp_buf.buf == NULL) 2568 { 2569 regfi_log_add(REGFI_LOG_INFO, "Error occurred while" 2570 " converting data of type %d to string encoding %d." 2571 " Error message: %s", 2572 type, string_encoding, strerror(errno)); 2579 2573 data->interpreted.multiple_string = NULL; 2580 2574 data->interpreted_size = 0; … … 2582 2576 } 2583 2577 2584 /* Attempt to convert entire string from UTF-16LE to output encoding, 2585 * then parse and quote fields individually. 2586 */ 2587 tmp_size = regfi_conv_charset(regfi_encoding_int2str(REGFI_ENCODING_UTF16LE), 2588 regfi_encoding_int2str(string_encoding), 2589 data->raw, (char*)tmp_str, 2590 data->size, data->size); 2591 if(tmp_size < 0) 2592 { 2593 regfi_log_add(REGFI_LOG_INFO, "Error occurred while" 2594 " converting data of type %d to %s. Error message: %s", 2595 type, string_encoding, strerror(-tmp_size)); 2596 talloc_free(tmp_str); 2597 data->interpreted.multiple_string = NULL; 2598 data->interpreted_size = 0; 2599 return false; 2600 } 2601 2602 array_size = tmp_size+1; 2603 tmp_array = talloc_array(NULL, uint8_t*, array_size); 2578 tmp_array = talloc_array(NULL, uint8_t*, tmp_buf.len+1); 2604 2579 if(tmp_array == NULL) 2605 2580 { 2606 talloc_free(tmp_ str);2581 talloc_free(tmp_buf.buf); 2607 2582 data->interpreted.string = NULL; 2608 2583 data->interpreted_size = 0; 2609 2584 return false; 2610 2585 } 2611 2612 tmp_array[0] = tmp_str; 2613 for(i=0,j=1; i < tmp_size && j < array_size-1; i++) 2614 { 2615 if(tmp_str[i] == '\0' && (i+1 < tmp_size) && tmp_str[i+1] != '\0') 2616 tmp_array[j++] = tmp_str+i+1; 2586 2587 tmp_array[0] = tmp_buf.buf; 2588 for(i=0,j=1; i < tmp_buf.len && j < tmp_buf.len; i++) 2589 { 2590 if(tmp_buf.buf[i] == '\0' && (i+1 < tmp_buf.len) 2591 && tmp_buf.buf[i+1] != '\0') 2592 tmp_array[j++] = tmp_buf.buf+i+1; 2617 2593 } 2618 2594 tmp_array[j] = NULL; … … 2620 2596 data->interpreted.multiple_string = tmp_array; 2621 2597 /* XXX: how meaningful is this? should we store number of strings instead? */ 2622 data->interpreted_size = tmp_ size;2623 talloc_reparent(NULL, tmp_array, tmp_ str);2598 data->interpreted_size = tmp_buf.len; 2599 talloc_reparent(NULL, tmp_array, tmp_buf.buf); 2624 2600 talloc_reparent(NULL, data, tmp_array); 2625 2601 break; … … 2663 2639 2664 2640 /****************************************************************************** 2665 * Convert from UTF-16LE to specified character set.2666 * On error, returns a negative errno code.2641 * Convert string from input_charset to output_charset. 2642 * On error, returns a NULL buf attribute and sets the errno. 2667 2643 *****************************************************************************/ 2668 int32_t regfi_conv_charset(const char* input_charset, const char* output_charset, 2669 uint8_t* input, char* output, 2670 uint32_t input_len, uint32_t output_max) 2644 REGFI_BUFFER regfi_conv_charset(const char* input_charset, const char* output_charset, 2645 uint8_t* input, uint32_t input_len) 2671 2646 { 2672 2647 iconv_t conv_desc; 2673 2648 char* inbuf = (char*)input; 2674 char* outbuf = output; 2675 size_t in_len = (size_t)input_len; 2676 size_t out_len = (size_t)(output_max-1); 2649 char* outbuf; 2650 char* retbuf; 2651 size_t allocated = (size_t)input_len; 2652 size_t in_left = (size_t)input_len; 2653 size_t out_left = (size_t)allocated-1; 2654 REGFI_BUFFER ret_val; 2677 2655 int ret; 2678 2656 2657 ret_val.buf = NULL; 2658 ret_val.len = 0; 2659 retbuf = talloc_array(NULL, char, allocated); 2660 outbuf = retbuf; 2661 if(outbuf == NULL) 2662 { 2663 errno = ENOMEM; 2664 return ret_val; 2665 } 2666 2667 /* Set up conversion descriptor. */ 2679 2668 /* XXX: Consider creating a couple of conversion descriptors earlier, 2680 2669 * storing them on an iterator so they don't have to be recreated 2681 2670 * each time. 2682 2671 */ 2683 2684 /* Set up conversion descriptor. */2685 2672 conv_desc = iconv_open(output_charset, input_charset); 2686 2673 2687 ret = iconv(conv_desc, &inbuf, &in_len, &outbuf, &out_len); 2674 ret = 0; 2675 do 2676 { 2677 if(ret == -1) 2678 { 2679 retbuf = talloc_realloc(NULL, retbuf, char, allocated+(in_left*2)); 2680 if(retbuf == NULL) 2681 { 2682 errno = ENOMEM; 2683 return ret_val; 2684 } 2685 outbuf = retbuf+(allocated-1-out_left); 2686 out_left += in_left*2; 2687 allocated += in_left*2; 2688 } 2689 ret = iconv(conv_desc, &inbuf, &in_left, &outbuf, &out_left); 2690 2691 } while(ret == -1 && errno == E2BIG); 2692 2688 2693 if(ret == -1) 2689 2694 { 2690 2695 iconv_close(conv_desc); 2691 return -errno; 2692 } 2693 *outbuf = '\0'; 2694 2695 iconv_close(conv_desc); 2696 return output_max-out_len-1; 2697 } 2698 2696 return ret_val; 2697 } 2698 2699 /* Save memory */ 2700 if(out_left > 0) 2701 { 2702 retbuf = talloc_realloc(NULL, retbuf, char, allocated-out_left); 2703 if(retbuf == NULL) 2704 { 2705 errno = ENOMEM; 2706 return ret_val; 2707 } 2708 allocated -= out_left; 2709 } 2710 retbuf[allocated-1] = '\0'; 2711 iconv_close(conv_desc); 2712 2713 ret_val.buf = (uint8_t*)retbuf; 2714 ret_val.len = allocated-1; 2715 return ret_val; 2716 } 2699 2717 2700 2718
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