X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilcutil%2Fsilcutil.c;h=04b1036358433e3163c75ef64076f2b412cb5985;hb=9905799a86c606304fd7df2cd401de1740a272a1;hp=6b118ee8a07a0bf2e6dbfd5d723880ba340520d1;hpb=186079e7fb070072090a395379f6b5f754604c2a;p=silc.git diff --git a/lib/silcutil/silcutil.c b/lib/silcutil/silcutil.c index 6b118ee8..04b10363 100644 --- a/lib/silcutil/silcutil.c +++ b/lib/silcutil/silcutil.c @@ -2,15 +2,14 @@ silcutil.c - Author: Pekka Riikonen + Author: Pekka Riikonen - Copyright (C) 1997 - 2000 Pekka Riikonen + Copyright (C) 1997 - 2007 Pekka Riikonen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - + the Free Software Foundation; version 2 of the License. + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the @@ -23,98 +22,7 @@ */ /* $Id$ */ -#include "silcincludes.h" - -/* Reads a file to a buffer. The allocated buffer is returned. Length of - the file read is returned to the return_len argument. */ - -char *silc_file_read(const char *filename, uint32 *return_len) -{ - int fd; - char *buffer; - int filelen; - - fd = open(filename, O_RDONLY); - if (fd < 0) { - SILC_LOG_ERROR(("Cannot open file %s: %s", filename, strerror(errno))); - return NULL; - } - - filelen = lseek(fd, (off_t)0L, SEEK_END); - if (filelen < 0) - return NULL; - if (lseek(fd, (off_t)0L, SEEK_SET) < 0) - return NULL; - - if (filelen < 0) { - SILC_LOG_ERROR(("Cannot open file %s: %s", filename, strerror(errno))); - return NULL; - } - - buffer = silc_calloc(filelen + 1, sizeof(char)); - - if ((read(fd, buffer, filelen)) == -1) { - memset(buffer, 0, sizeof(buffer)); - close(fd); - SILC_LOG_ERROR(("Cannot read from file %s: %s", filename, - strerror(errno))); - return NULL; - } - - close(fd); - buffer[filelen] = EOF; - - if (return_len) - *return_len = filelen; - - return buffer; -} - -/* Writes a buffer to the file. */ - -int silc_file_write(const char *filename, const char *buffer, uint32 len) -{ - int fd; - - if ((fd = creat(filename, 0644)) == -1) { - SILC_LOG_ERROR(("Cannot open file %s for writing: %s", filename, - strerror(errno))); - return -1; - } - - if ((write(fd, buffer, len)) == -1) { - SILC_LOG_ERROR(("Cannot write to file %s: %s", filename, strerror(errno))); - return -1; - } - - close(fd); - - return 0; -} - -/* Writes a buffer to the file. If the file is created specific mode is - set to the file. */ - -int silc_file_write_mode(const char *filename, const char *buffer, - uint32 len, int mode) -{ - int fd; - - if ((fd = creat(filename, mode)) == -1) { - SILC_LOG_ERROR(("Cannot open file %s for writing: %s", filename, - strerror(errno))); - return -1; - } - - if ((write(fd, buffer, len)) == -1) { - SILC_LOG_ERROR(("Cannot write to file %s: %s", filename, strerror(errno))); - return -1; - } - - close(fd); - - return 0; -} +#include "silc.h" /* Gets line from a buffer. Stops reading when a newline or EOF occurs. This doesn't remove the newline sign from the destination buffer. The @@ -124,27 +32,27 @@ int silc_gets(char *dest, int destlen, const char *src, int srclen, int begin) { static int start = 0; int i; - + memset(dest, 0, destlen); - + if (begin != start) start = 0; - + i = 0; for ( ; start <= srclen; i++, start++) { if (i > destlen) return -1; - + dest[i] = src[start]; - - if (dest[i] == EOF) + + if (dest[i] == EOF) return EOF; - - if (dest[i] == '\n') + + if (dest[i] == '\n') break; } start++; - + return start; } @@ -152,7 +60,7 @@ int silc_gets(char *dest, int destlen, const char *src, int srclen, int begin) were found. This is used to check for bad lines when reading data from for example a configuration file. */ -int silc_check_line(char *buf) +int silc_check_line(char *buf) { /* Illegal characters in line */ if (strchr(buf, '#')) return -1; @@ -162,238 +70,85 @@ int silc_check_line(char *buf) if (strchr(buf, '\a')) return -1; if (strchr(buf, '\b')) return -1; if (strchr(buf, '\f')) return -1; - + /* Empty line */ if (buf[0] == '\n') return -1; - - return 0; -} - -/* Returns current time as string. */ - -char *silc_get_time() -{ - time_t curtime; - char *return_time; - - curtime = time(NULL); - return_time = ctime(&curtime); - return_time[strlen(return_time) - 1] = '\0'; - return return_time; + return 0; } -/* Converts string to capital characters */ +/* Converts string to capital characters. */ -char *silc_to_upper(char *string) +SilcBool silc_to_upper(const char *string, char *dest, SilcUInt32 dest_size) { int i; - char *ret = silc_calloc(strlen(string) + 1, sizeof(char)); - for (i = 0; i < strlen(string); i++) - ret[i] = toupper(string[i]); - - return ret; -} - -static unsigned char pem_enc[64] = -"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - -/* Encodes data into PEM encoding. Returns NULL terminated PEM encoded - data string. Note: This is originally public domain code and is - still PD. */ - -char *silc_encode_pem(unsigned char *data, uint32 len) -{ - int i, j; - uint32 bits, c, char_count; - char *pem; - - char_count = 0; - bits = 0; - j = 0; - - pem = silc_calloc(((len * 8 + 5) / 6) + 5, sizeof(*pem)); - - for (i = 0; i < len; i++) { - c = data[i]; - bits += c; - char_count++; - - if (char_count == 3) { - pem[j++] = pem_enc[bits >> 18]; - pem[j++] = pem_enc[(bits >> 12) & 0x3f]; - pem[j++] = pem_enc[(bits >> 6) & 0x3f]; - pem[j++] = pem_enc[bits & 0x3f]; - bits = 0; - char_count = 0; - } else { - bits <<= 8; - } - } + if (strlen(string) > dest_size) + return FALSE; - if (char_count != 0) { - bits <<= 16 - (8 * char_count); - pem[j++] = pem_enc[bits >> 18]; - pem[j++] = pem_enc[(bits >> 12) & 0x3f]; - - if (char_count == 1) { - pem[j++] = '='; - pem[j] = '='; - } else { - pem[j++] = pem_enc[(bits >> 6) & 0x3f]; - pem[j] = '='; - } - } + for (i = 0; i < strlen(string); i++) + dest[i] = (char)toupper((int)string[i]); - return pem; + return TRUE; } -/* Same as above but puts newline ('\n') every 72 characters. */ +/* Converts string to lower letter characters. */ -char *silc_encode_pem_file(unsigned char *data, uint32 data_len) +SilcBool silc_to_lower(const char *string, char *dest, SilcUInt32 dest_size) { - int i, j; - uint32 len, cols; - char *pem, *pem2; - - pem = silc_encode_pem(data, data_len); - len = strlen(pem); - - pem2 = silc_calloc(len + (len / 72) + 1, sizeof(*pem2)); + int i; - for (i = 0, j = 0, cols = 1; i < len; i++, cols++) { - if (cols == 72) { - pem2[i] = '\n'; - cols = 0; - len++; - continue; - } + if (strlen(string) > dest_size) + return FALSE; - pem2[i] = pem[j++]; - } + for (i = 0; i < strlen(string); i++) + dest[i] = (char)tolower((int)string[i]); - silc_free(pem); - return pem2; + return TRUE; } -/* Decodes PEM into data. Returns the decoded data. Note: This is - originally public domain code and is still PD. */ +/* Parse userfqdn string which is in user@fqdn format. */ -unsigned char *silc_decode_pem(unsigned char *pem, uint32 pem_len, - uint32 *ret_len) +int silc_parse_userfqdn(const char *string, + char *user, SilcUInt32 user_size, + char *fqdn, SilcUInt32 fqdn_size) { - int i, j; - uint32 len, c, char_count, bits; - unsigned char *data; - static char ialpha[256], decoder[256]; - - for (i = 64 - 1; i >= 0; i--) { - ialpha[pem_enc[i]] = 1; - decoder[pem_enc[i]] = i; - } + SilcUInt32 tlen; - char_count = 0; - bits = 0; - j = 0; + if (!user && !fqdn) + return 0; - if (!pem_len) - len = strlen(pem); - else - len = pem_len; + memset(user, 0, user_size); + memset(fqdn, 0, fqdn_size); - data = silc_calloc(((len * 6) / 8), sizeof(*data)); - - for (i = 0; i < len; i++) { - c = pem[i]; - - if (c == '=') - break; - - if (c > 127 || !ialpha[c]) - continue; + if (!string) + return 0; - bits += decoder[c]; - char_count++; + if (string[0] == '@') { + if (user) + silc_strncat(user, user_size, string, strlen(string)); - if (char_count == 4) { - data[j++] = bits >> 16; - data[j++] = (bits >> 8) & 0xff; - data[j++] = bits & 0xff; - bits = 0; - char_count = 0; - } else { - bits <<= 6; - } + return 1; } - switch(char_count) { - case 1: - silc_free(data); - return NULL; - break; - case 2: - data[j++] = bits >> 10; - break; - case 3: - data[j++] = bits >> 16; - data[j++] = (bits >> 8) & 0xff; - break; - } - - if (ret_len) - *ret_len = j; - - return data; -} - -/* Parse nickname string. The format may be !@ to - support multiple same nicknames. The is the final unifier if same - nickname is on same server. Note, this is only local format and server - does not know anything about these. */ - -int silc_parse_nickname(char *string, char **nickname, char **server, - uint32 *num) -{ - uint32 tlen; - char tmp[256]; - - if (!string) - return FALSE; - - if (strchr(string, '!')) { - tlen = strcspn(string, "!"); - memset(tmp, 0, sizeof(tmp)); - memcpy(tmp, string, tlen); + if (strchr(string, '@')) { + tlen = strcspn(string, "@"); - if (num) - *num = atoi(tmp); + if (user) + silc_strncat(user, user_size, string, tlen); - if (tlen >= strlen(string)) - return FALSE; + if (fqdn) + silc_strncat(fqdn, fqdn_size, string + tlen + 1, + strlen(string) - tlen - 1); - string += tlen + 1; + return 2; } - if (strchr(string, '@')) { - tlen = strcspn(string, "@"); - - if (nickname) { - *nickname = silc_calloc(tlen + 1, sizeof(char)); - memcpy(*nickname, string, tlen); - } - - if (server) { - *server = silc_calloc((strlen(string) - tlen) + 1, sizeof(char)); - memcpy(*server, string + tlen + 1, strlen(string) - tlen - 1); - } - } else { - if (nickname) - *nickname = strdup(string); - } + if (user) + silc_strncat(user, user_size, string, strlen(string)); - return TRUE; + return 1; } /* Parses command line. At most `max_args' is taken. Rest of the line @@ -401,25 +156,34 @@ int silc_parse_nickname(char *string, char **nickname, char **server, arguments in the line. Note that the command name is counted as one argument and is saved. */ -void silc_parse_command_line(unsigned char *buffer, +void silc_parse_command_line(unsigned char *buffer, unsigned char ***parsed, - uint32 **parsed_lens, - uint32 **parsed_types, - uint32 *parsed_num, - uint32 max_args) + SilcUInt32 **parsed_lens, + SilcUInt32 **parsed_types, + SilcUInt32 *parsed_num, + SilcUInt32 max_args) { int i, len = 0; int argc = 0; const char *cp = buffer; + char *tmp; *parsed = silc_calloc(1, sizeof(**parsed)); *parsed_lens = silc_calloc(1, sizeof(**parsed_lens)); /* Get the command first */ len = strcspn(cp, " "); - (*parsed)[0] = silc_to_upper((char *)cp); + tmp = silc_calloc(strlen(cp) + 1, sizeof(*tmp)); + if (!tmp) + return; + silc_to_upper(cp, tmp, strlen(cp)); + (*parsed)[0] = silc_calloc(len + 1, sizeof(char)); + memcpy((*parsed)[0], tmp, len); + silc_free(tmp); (*parsed_lens)[0] = len; - cp += len + 1; + cp += len; + while (*cp == ' ') + cp++; argc++; /* Parse arguments */ @@ -430,9 +194,13 @@ void silc_parse_command_line(unsigned char *buffer, len = strcspn(cp, " "); else len = strlen(cp); - + while (len && cp[len - 1] == ' ') + len--; + if (!len) + break; + *parsed = silc_realloc(*parsed, sizeof(**parsed) * (argc + 1)); - *parsed_lens = silc_realloc(*parsed_lens, + *parsed_lens = silc_realloc(*parsed_lens, sizeof(**parsed_lens) * (argc + 1)); (*parsed)[argc] = silc_calloc(len + 1, sizeof(char)); memcpy((*parsed)[argc], cp, len); @@ -443,7 +211,8 @@ void silc_parse_command_line(unsigned char *buffer, if (strlen(cp) == 0) break; else - cp++; + while (*cp == ' ') + cp++; } } @@ -463,303 +232,364 @@ void silc_parse_command_line(unsigned char *buffer, char *silc_format(char *fmt, ...) { va_list args; - static char buf[8192]; + char buf[8192]; memset(buf, 0, sizeof(buf)); va_start(args, fmt); - vsnprintf(buf, sizeof(buf) - 1, fmt, args); + vsilc_snprintf(buf, sizeof(buf) - 1, fmt, args); va_end(args); return strdup(buf); } -/* Renders ID to suitable to print for example to log file. */ +/* Basic has function to hash strings. May be used with the SilcHashTable. + Note that this lowers the characters of the string (with tolower()) so + this is used usually with nicknames, channel and server names to provide + case insensitive keys. */ + +SilcUInt32 silc_hash_string(void *key, void *user_context) +{ + char *s = (char *)key; + SilcUInt32 h = 0, g; + + while (*s != '\0') { + h = (h << 4) + tolower((int)*s); + if ((g = h & 0xf0000000)) { + h = h ^ (g >> 24); + h = h ^ g; + } + s++; + } + + return h; +} + +/* Hash UTF-8 string */ + +SilcUInt32 silc_hash_utf8_string(void *key, void *user_context) +{ + unsigned char *s = (unsigned char *)key; + SilcUInt32 h = 0, g; + + while (*s != '\0') { + h = (h << 4) + *s; + if ((g = h & 0xf0000000)) { + h = h ^ (g >> 24); + h = h ^ g; + } + s++; + } + + return h; +} + +/* Basic hash function to hash integers. May be used with the SilcHashTable. */ -static char rid[256]; +SilcUInt32 silc_hash_uint(void *key, void *user_context) +{ + return SILC_PTR_TO_32(key); +} + +/* Basic hash funtion to hash pointers. May be used with the SilcHashTable. */ -char *silc_id_render(void *id, uint16 type) +SilcUInt32 silc_hash_ptr(void *key, void *user_context) { - char tmp[100]; - unsigned char tmps[2]; + return SILC_PTR_TO_32(key); +} - memset(rid, 0, sizeof(rid)); - switch(type) { - case SILC_ID_SERVER: +/* Hash a ID. The `user_context' is the ID type. */ + +SilcUInt32 silc_hash_id(void *key, void *user_context) +{ + SilcIdType id_type = (SilcIdType)SILC_PTR_TO_32(user_context); + SilcUInt32 h = 0; + int i; + + switch (id_type) { + case SILC_ID_CLIENT: { - SilcServerID *server_id = (SilcServerID *)id; - struct in_addr ipv4; - - if (server_id->ip.data_len > 4) { - - } else { - SILC_GET32_MSB(ipv4.s_addr, server_id->ip.data); - strcat(rid, inet_ntoa(ipv4)); - } - - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), ",%d,", ntohs(server_id->port)); - strcat(rid, tmp); - SILC_PUT16_MSB(server_id->rnd, tmps); - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), "[%02x %02x]", tmps[0], tmps[1]); - strcat(rid, tmp); + SilcClientID *id = (SilcClientID *)key; + + /* The client ID is hashed by hashing the hash of the ID + (which is a truncated MD5 hash of the nickname) so that we + can access the entry from the cache with both Client ID but + with just a hash from the ID as well. */ + return silc_hash_client_id_hash(id->hash, NULL); } break; - case SILC_ID_CLIENT: + case SILC_ID_SERVER: { - SilcClientID *client_id = (SilcClientID *)id; - struct in_addr ipv4; - - if (client_id->ip.data_len > 4) { - - } else { - SILC_GET32_MSB(ipv4.s_addr, client_id->ip.data); - strcat(rid, inet_ntoa(ipv4)); - } - - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), ",%02x,", client_id->rnd); - strcat(rid, tmp); - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), "[%02x %02x %02x %02x...]", - client_id->hash[0], client_id->hash[1], - client_id->hash[2], client_id->hash[3]); - strcat(rid, tmp); + SilcServerID *id = (SilcServerID *)key; + + h = id->port * id->rnd; + for (i = 0; i < id->ip.data_len; i++) + h ^= id->ip.data[i]; + + return h; } break; case SILC_ID_CHANNEL: { - SilcChannelID *channel_id = (SilcChannelID *)id; - struct in_addr ipv4; - - if (channel_id->ip.data_len > 4) { - - } else { - SILC_GET32_MSB(ipv4.s_addr, channel_id->ip.data); - strcat(rid, inet_ntoa(ipv4)); - } - - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), ",%d,", ntohs(channel_id->port)); - strcat(rid, tmp); - SILC_PUT16_MSB(channel_id->rnd, tmps); - memset(tmp, 0, sizeof(tmp)); - snprintf(tmp, sizeof(tmp), "[%02x %02x]", tmps[0], tmps[1]); - strcat(rid, tmp); + SilcChannelID *id = (SilcChannelID *)key; + + h = id->port * id->rnd; + for (i = 0; i < id->ip.data_len; i++) + h ^= id->ip.data[i]; + + return h; } break; + default: + break; } - return rid; + return h; } -/* Compares two strings. Strings may include wildcards * and ?. - Returns TRUE if strings match. */ +/* Hash Client ID's hash. */ -int silc_string_compare(char *string1, char *string2) +SilcUInt32 silc_hash_client_id_hash(void *key, void *user_context) { int i; - int slen1 = strlen(string1); - int slen2 = strlen(string2); - char *tmpstr1, *tmpstr2; - - if (!string1 || !string2) - return FALSE; - - /* See if they are same already */ - if (!strncmp(string1, string2, strlen(string2))) - return TRUE; - - if (slen2 < slen1) - if (!strchr(string1, '*')) - return FALSE; - - /* Take copies of the original strings as we will change them */ - tmpstr1 = silc_calloc(slen1 + 1, sizeof(char)); - memcpy(tmpstr1, string1, slen1); - tmpstr2 = silc_calloc(slen2 + 1, sizeof(char)); - memcpy(tmpstr2, string2, slen2); - - for (i = 0; i < slen1; i++) { - - /* * wildcard. Only one * wildcard is possible. */ - if (tmpstr1[i] == '*') - if (!strncmp(tmpstr1, tmpstr2, i)) { - memset(tmpstr2, 0, slen2); - strncpy(tmpstr2, tmpstr1, i); - break; - } - - /* ? wildcard */ - if (tmpstr1[i] == '?') { - if (!strncmp(tmpstr1, tmpstr2, i)) { - if (!(slen1 < i + 1)) - if (tmpstr1[i + 1] != '?' && - tmpstr1[i + 1] != tmpstr2[i + 1]) - continue; - - if (!(slen1 < slen2)) - tmpstr2[i] = '?'; - } + unsigned char *hash = key; + SilcUInt32 h = 0, g; + + for (i = 0; i < CLIENTID_HASH_LEN; i++) { + h = (h << 4) + hash[i]; + if ((g = h & 0xf0000000)) { + h = h ^ (g >> 24); + h = h ^ g; } } - - /* if using *, remove it */ - if (strchr(tmpstr1, '*')) - *strchr(tmpstr1, '*') = 0; - - if (!strcmp(tmpstr1, tmpstr2)) { - memset(tmpstr1, 0, slen1); - memset(tmpstr2, 0, slen2); - silc_free(tmpstr1); - silc_free(tmpstr2); - return TRUE; - } - - memset(tmpstr1, 0, slen1); - memset(tmpstr2, 0, slen2); - silc_free(tmpstr1); - silc_free(tmpstr2); - return FALSE; + + return h; } -/* Inspects the `string' for wildcards and returns regex string that can - be used by the GNU regex library. A comma (`,') in the `string' means - that the string is list. */ +/* Hash binary data. The `user_context' is the data length. */ -char *silc_string_regexify(const char *string) +SilcUInt32 silc_hash_data(void *key, void *user_context) { - int i, len, count; - char *regex; + SilcUInt32 len = SILC_PTR_TO_32(user_context), h = 0; + unsigned char *data = (unsigned char *)key; + int i; - len = strlen(string); - count = 4; + h = (data[0] * data[len - 1] + 1) * len; for (i = 0; i < len; i++) - if (string[i] == '*' || string[i] == '?') - count++; - - regex = silc_calloc(len + count, sizeof(*regex)); - - count = 0; - regex[count] = '('; - count++; - - for (i = 0; i < len; i++) { - if (string[i] == '*' || string[i] == '?') { - regex[count] = '.'; - count++; - } else if (string[i] == ',') { - regex[count] = '|'; - count++; - continue; - } + h ^= data[i]; - regex[count] = string[i]; - count++; - } + return h; +} + +/* Hash public key of any type. */ + +SilcUInt32 silc_hash_public_key(void *key, void *user_context) +{ + SilcPublicKey public_key = key; + unsigned char *pk; + SilcUInt32 pk_len; + SilcUInt32 hash = 0; - regex[count - 1] = ')'; - regex[count] = '$'; + pk = silc_pkcs_public_key_encode(public_key, &pk_len); + if (!pk) + return hash; - return regex; + hash = silc_hash_data(pk, SILC_32_TO_PTR(pk_len)); + silc_free(pk); + + return hash; } -/* Combines two regex strings into one regex string so that they can be - used as one by the GNU regex library. The `string2' is combine into - the `string1'. */ +/* Compares two strings. It may be used as SilcHashTable comparison + function. */ -char *silc_string_regex_combine(const char *string1, const char *string2) +SilcBool silc_hash_string_compare(void *key1, void *key2, void *user_context) { - char *tmp; - int len1, len2; - - len1 = strlen(string1); - len2 = strlen(string2); + return !strcasecmp((char *)key1, (char *)key2); +} - tmp = silc_calloc(2 + len1 + len2, sizeof(*tmp)); - strncat(tmp, string1, len1 - 2); - strncat(tmp, "|", 1); - strncat(tmp, string2 + 1, len2 - 1); +/* Compares two ID's. May be used as SilcHashTable comparison function. + The Client ID's compares only the hash of the Client ID not any other + part of the Client ID. Other ID's are fully compared. */ - return tmp; +SilcBool silc_hash_id_compare(void *key1, void *key2, void *user_context) +{ + SilcIdType id_type = (SilcIdType)SILC_PTR_TO_32(user_context); + return (id_type == SILC_ID_CLIENT ? + SILC_ID_COMPARE_HASH((SilcClientID *)key1, (SilcClientID *)key2) : + SILC_ID_COMPARE_TYPE(key1, key2, id_type)); } -/* Matches the two strings and returns TRUE if the strings match. */ +/* Compares two ID's. Compares full IDs. */ -int silc_string_regex_match(const char *regex, const char *string) +SilcBool silc_hash_id_compare_full(void *key1, void *key2, void *user_context) { - regex_t preg; - int ret = FALSE; - - if (regcomp(&preg, regex, REG_NOSUB | REG_EXTENDED) < 0) - return FALSE; + SilcIdType id_type = (SilcIdType)SILC_PTR_TO_32(user_context); + return SILC_ID_COMPARE_TYPE(key1, key2, id_type); +} - if (regexec(&preg, string, 0, NULL, 0) == 0) - ret = TRUE; +/* Compare two Client ID's entirely and not just the hash from the ID. */ - regfree(&preg); +SilcBool silc_hash_client_id_compare(void *key1, void *key2, + void *user_context) +{ + return SILC_ID_COMPARE_TYPE(key1, key2, SILC_ID_CLIENT); +} + +/* Compares binary data. May be used as SilcHashTable comparison function. */ - return ret; +SilcBool silc_hash_data_compare(void *key1, void *key2, void *user_context) +{ + SilcUInt32 len = SILC_PTR_TO_32(user_context); + return !memcmp(key1, key2, len); } -/* Do regex match to the two strings `string1' and `string2'. If the - `string2' matches the `string1' this returns TRUE. */ +/* Compares UTF-8 string. */ -int silc_string_match(const char *string1, const char *string2) +SilcBool silc_hash_utf8_compare(void *key1, void *key2, void *user_context) { - char *s1; - int ret = FALSE; + int l1 = strlen((char *)key1); + int l2 = strlen((char *)key2); + if (l1 != l2) + return FALSE; + return !memcmp(key1, key2, l2); +} - s1 = silc_string_regexify(string1); - ret = silc_string_regex_match(s1, string2); - silc_free(s1); +/* Compares two SILC Public keys. It may be used as SilcHashTable + comparison function. */ - return ret; +SilcBool silc_hash_public_key_compare(void *key1, void *key2, + void *user_context) +{ + return silc_pkcs_public_key_compare(key1, key2); } -/* Returns the username of the user. If the global variable LOGNAME - does not exists we will get the name from the password file. */ +/* Creates fingerprint from data, usually used with SHA1 digests */ -char *silc_get_username() +char *silc_fingerprint(const unsigned char *data, SilcUInt32 data_len) { - char *logname = NULL; - - logname = strdup(getenv("LOGNAME")); - if (!logname) { - logname = getlogin(); - if (!logname) { - struct passwd *pw; - - pw = getpwuid(getuid()); - if (!pw) { - fprintf(stderr, "silc_get_username: %s\n", strerror(errno)); - return NULL; - } - - logname = strdup(pw->pw_name); - } + char fingerprint[64], *cp; + int i; + + memset(fingerprint, 0, sizeof(fingerprint)); + cp = fingerprint; + for (i = 0; i < data_len; i++) { + silc_silc_snprintf(cp, sizeof(fingerprint), "%02X", data[i]); + cp += 2; + + if ((i + 1) % 2 == 0) + silc_silc_snprintf(cp++, sizeof(fingerprint), " "); + + if ((i + 1) % 10 == 0) + silc_silc_snprintf(cp++, sizeof(fingerprint), " "); } - - return logname; -} + i--; + if ((i + 1) % 2 == 0) + cp[-2] = 0; + if ((i + 1) % 10 == 0) + cp[-1] = 0; -/* Returns the real name of ther user. */ + return strdup(fingerprint); +} -char *silc_get_real_name() +/* Return TRUE if the `data' is ASCII string. */ + +SilcBool silc_string_is_ascii(const unsigned char *data, SilcUInt32 data_len) { - char *realname = NULL; - struct passwd *pw; - - pw = getpwuid(getuid()); - if (!pw) { - fprintf(stderr, "silc_get_username: %s\n", strerror(errno)); - return NULL; + int i; + + for (i = 0; i < data_len; i++) { + if (!isascii(data[i])) + return FALSE; } - if (strchr(pw->pw_gecos, ',')) - *strchr(pw->pw_gecos, ',') = 0; + return TRUE; +} - realname = strdup(pw->pw_gecos); +/* Displays input prompt on command line and takes input data from user */ - return realname; +char *silc_get_input(const char *prompt, SilcBool echo_off) +{ +#ifdef SILC_UNIX + int fd; + char input[2048]; + + if (echo_off) { + char *ret = NULL; +#ifdef HAVE_TERMIOS_H + struct termios to; + struct termios to_old; + + fd = open("/dev/tty", O_RDONLY); + if (fd < 0) { + fprintf(stderr, "silc: %s\n", strerror(errno)); + return NULL; + } + + signal(SIGINT, SIG_IGN); + + /* Get terminal info */ + tcgetattr(fd, &to); + to_old = to; + + /* Echo OFF, and assure we can prompt and get input */ + to.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); + to.c_lflag |= ICANON; + to.c_cc[VMIN] = 255; + tcsetattr(fd, TCSANOW, &to); + + memset(input, 0, sizeof(input)); + + printf("%s", prompt); + fflush(stdout); + + if ((read(fd, input, sizeof(input))) < 0) { + fprintf(stderr, "silc: %s\n", strerror(errno)); + tcsetattr(fd, TCSANOW, &to_old); + return NULL; + } + + if (strlen(input) <= 1) { + tcsetattr(fd, TCSANOW, &to_old); + return NULL; + } + + if (strchr(input, '\n')) + *strchr(input, '\n') = '\0'; + + /* Restore old terminfo */ + tcsetattr(fd, TCSANOW, &to_old); + signal(SIGINT, SIG_DFL); + + ret = silc_memdup(input, strlen(input)); + memset(input, 0, sizeof(input)); +#endif /* HAVE_TERMIOS_H */ + return ret; + } else { + fd = open("/dev/tty", O_RDONLY); + if (fd < 0) { + fprintf(stderr, "silc: %s\n", strerror(errno)); + return NULL; + } + + memset(input, 0, sizeof(input)); + + printf("%s", prompt); + fflush(stdout); + + if ((read(fd, input, sizeof(input))) < 0) { + fprintf(stderr, "silc: %s\n", strerror(errno)); + return NULL; + } + + if (strlen(input) <= 1) + return NULL; + + if (strchr(input, '\n')) + *strchr(input, '\n') = '\0'; + + return strdup(input); + } +#else + return NULL; +#endif /* SILC_UNIX */ }