silcutil.c
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
+ Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Copyright (C) 1997 - 2008 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
*/
/* $Id$ */
-#include "silcincludes.h"
-
-/* Opens a file indicated by the filename `filename' with flags indicated
- by the `flags'. */
-
-int silc_file_open(const char *filename, int flags)
-{
- int fd;
-
- fd = open(filename, flags, 0600);
-
- return fd;
-}
-
-/* Reads data from file descriptor `fd' to `buf'. */
-
-int silc_file_read(int fd, unsigned char *buf, uint32 buf_len)
-{
- return read(fd, (void *)buf, buf_len);
-}
-
-/* Writes `buffer' of length of `len' to file descriptor `fd. */
-
-int silc_file_write(int fd, const char *buffer, uint32 len)
-{
- return write(fd, (const void *)buffer, len);
-}
-
-/* Closes file descriptor */
-
-int silc_file_close(int fd)
-{
- return close(fd);
-}
-
-/* Writes a buffer to the file. */
-
-int silc_file_writefile(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)));
- close(fd);
- 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_writefile_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)));
- close(fd);
- return -1;
- }
-
- close(fd);
-
- return 0;
-}
-
-/* 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_readfile(const char *filename, uint32 *return_len)
-{
- int fd;
- char *buffer;
- int filelen;
-
- fd = silc_file_open(filename, O_RDONLY);
- if (fd < 0) {
- if (errno == ENOENT)
- return NULL;
- SILC_LOG_ERROR(("Cannot open file %s: %s", filename, strerror(errno)));
- return NULL;
- }
-
- filelen = lseek(fd, (off_t)0L, SEEK_END);
- if (filelen < 0) {
- close(fd);
- return NULL;
- }
- if (lseek(fd, (off_t)0L, SEEK_SET) < 0) {
- close(fd);
- return NULL;
- }
-
- if (filelen < 0) {
- SILC_LOG_ERROR(("Cannot open file %s: %s", filename, strerror(errno)));
- close(fd);
- 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;
-}
-
-/* Returns files size. Returns 0 on error. */
-
-uint64 silc_file_size(const char *filename)
-{
- int ret;
- struct stat stats;
-
-#ifndef SILC_WIN32\r
- ret = lstat(filename, &stats);
-#else\r
- ret = stat(filename, &stats);\r
-#endif\r
- if (ret < 0)\r
- return 0;\r
-
- return (uint64)stats.st_size;
-}
+#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
{
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)
+ if (i > destlen) {
+ silc_set_errno(SILC_ERR_OVERFLOW);
return -1;
-
+ }
+
dest[i] = src[start];
-
- if (dest[i] == EOF)
+
+ if (dest[i] == EOF) {
+ silc_set_errno(SILC_ERR_EOF);
return EOF;
-
- if (dest[i] == '\n')
+ }
+
+ if (dest[i] == '\n')
break;
}
start++;
-
+
return start;
}
-/* Checks line for illegal characters. Return -1 when illegal character
- were found. This is used to check for bad lines when reading data from
- for example a configuration file. */
+/* Converts string to capital characters. */
-int silc_check_line(char *buf)
+SilcBool silc_to_upper(const char *string, char *dest, SilcUInt32 dest_size)
{
- /* Illegal characters in line */
- if (strchr(buf, '#')) return -1;
- if (strchr(buf, '\'')) return -1;
- if (strchr(buf, '\\')) return -1;
- if (strchr(buf, '\r')) return -1;
- 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. */
+ int i;
-char *silc_get_time()
-{
- time_t curtime;
- char *return_time;
+ if (strlen(string) > dest_size) {
+ silc_set_errno(SILC_ERR_OVERFLOW);
+ return FALSE;
+ }
- curtime = time(NULL);
- return_time = ctime(&curtime);
- return_time[strlen(return_time) - 1] = '\0';
+ for (i = 0; i < strlen(string); i++)
+ dest[i] = (char)toupper((int)string[i]);
- return return_time;
+ return TRUE;
}
-/* Converts string to capital characters */
+/* Converts string to lower letter characters. */
-char *silc_to_upper(char *string)
+SilcBool silc_to_lower(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) {
+ silc_set_errno(SILC_ERR_OVERFLOW);
+ 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)tolower((int)string[i]);
- return pem;
+ return TRUE;
}
-/* Same as above but puts newline ('\n') every 72 characters. */
+/* Parse userfqdn string which is in user@fqdn format. */
-char *silc_encode_pem_file(unsigned char *data, uint32 data_len)
+int silc_parse_userfqdn(const char *string,
+ char *user, SilcUInt32 user_size,
+ char *fqdn, SilcUInt32 fqdn_size)
{
- int i, j;
- uint32 len, cols;
- char *pem, *pem2;
-
- pem = silc_encode_pem(data, data_len);
- len = strlen(pem);
+ SilcUInt32 tlen;
- pem2 = silc_calloc(len + (len / 72) + 1, sizeof(*pem2));
-
- for (i = 0, j = 0, cols = 1; i < len; i++, cols++) {
- if (cols == 72) {
- pem2[i] = '\n';
- cols = 0;
- len++;
- continue;
- }
-
- pem2[i] = pem[j++];
+ if (!user && !fqdn) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return 0;
}
- silc_free(pem);
- return pem2;
-}
+ memset(user, 0, user_size);
+ memset(fqdn, 0, fqdn_size);
-/* Decodes PEM into data. Returns the decoded data. Note: This is
- originally public domain code and is still PD. */
-
-unsigned char *silc_decode_pem(unsigned char *pem, uint32 pem_len,
- uint32 *ret_len)
-{
- 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;
+ if (!string) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return 0;
}
- char_count = 0;
- bits = 0;
- j = 0;
-
- if (!pem_len)
- len = strlen(pem);
- else
- len = pem_len;
-
- 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;
-
- bits += decoder[c];
- char_count++;
-
- 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;
- }
- }
+ if (string[0] == '@') {
+ if (user)
+ silc_strncat(user, user_size, string, strlen(string));
- 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;
+ return 1;
}
- if (ret_len)
- *ret_len = j;
-
- return data;
-}
-
-/* Parse userfqdn string which is in user@fqdn format */
+ if (strchr(string, '@')) {
+ tlen = strcspn(string, "@");
-bool silc_parse_userfqdn(const char *string, char **left, char **right)
-{
- uint32 tlen;
+ if (user)
+ silc_strncat(user, user_size, string, tlen);
- if (!string)
- return FALSE;
+ if (fqdn)
+ silc_strncat(fqdn, fqdn_size, string + tlen + 1,
+ strlen(string) - tlen - 1);
- if (string[0] == '@') {
- if (left)
- *left = strdup(string);
- return TRUE;
+ return 2;
}
- if (strchr(string, '@')) {
- tlen = strcspn(string, "@");
-
- if (left) {
- *left = silc_calloc(tlen + 1, sizeof(char));
- memcpy(*left, string, tlen);
- }
-
- if (right) {
- *right = silc_calloc((strlen(string) - tlen) + 1, sizeof(char));
- memcpy(*right, string + tlen + 1, strlen(string) - tlen - 1);
- }
- } else {
- if (left)
- *left = 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
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;
+ const char *cp = (const char *)buffer;
char *tmp;
*parsed = silc_calloc(1, sizeof(**parsed));
/* Get the command first */
len = strcspn(cp, " ");
- tmp = 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);
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);
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);
+ silc_vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
- return strdup(buf);
+ return silc_strdup(buf);
}
-/* Renders ID to suitable to print for example to log file. */
-
-static char rid[256];
+/* Creates fingerprint from data, usually used with SHA1 digests */
-char *silc_id_render(void *id, uint16 type)
+char *silc_fingerprint(const unsigned char *data, SilcUInt32 data_len)
{
- char tmp[100];
- unsigned char tmps[2];
-
- memset(rid, 0, sizeof(rid));
- switch(type) {
- case SILC_ID_SERVER:
- {
- SilcServerID *server_id = (SilcServerID *)id;
- if (server_id->ip.data_len > 4) {
-#ifdef HAVE_IPV6
- struct in6_addr ipv6;
- memmove(&ipv6, server_id->ip.data, sizeof(ipv6));
- if (!inet_ntop(AF_INET6, &ipv6, tmp, sizeof(tmp)))
- strcat(rid, tmp);
-#endif
- } else {
- struct in_addr ipv4;
- memmove(&ipv4.s_addr, server_id->ip.data, 4);
- strcat(rid, inet_ntoa(ipv4));
- }
+ unsigned char *fingerprint, *cp;
+ unsigned int len, blocks, i;
- 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);
- }
- break;
- case SILC_ID_CLIENT:
- {
- SilcClientID *client_id = (SilcClientID *)id;
- if (client_id->ip.data_len > 4) {
-#ifdef HAVE_IPV6
- struct in6_addr ipv6;
- memmove(&ipv6, client_id->ip.data, sizeof(ipv6));
- if (!inet_ntop(AF_INET6, &ipv6, tmp, sizeof(tmp)))
- strcat(rid, tmp);
-#endif
- } else {
- struct in_addr ipv4;
- memmove(&ipv4.s_addr, client_id->ip.data, 4);
- 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);
- }
- break;
- case SILC_ID_CHANNEL:
- {
- SilcChannelID *channel_id = (SilcChannelID *)id;
- if (channel_id->ip.data_len > 4) {
-#ifdef HAVE_IPV6
- struct in6_addr ipv6;
- memmove(&ipv6, channel_id->ip.data, sizeof(ipv6));
- if (!inet_ntop(AF_INET6, &ipv6, tmp, sizeof(tmp)))
- strcat(rid, tmp);
-#endif
- } else {
- struct in_addr ipv4;
- memmove(&ipv4.s_addr, channel_id->ip.data, 4);
- 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);
- }
- break;
+ if (!data || !data_len) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return NULL;
}
- return rid;
-}
-
-/* Compares two strings. Strings may include wildcards * and ?.
- Returns TRUE if strings match. */
+ if (data_len >= 256)
+ data_len = 255;
-int silc_string_compare(char *string1, char *string2)
-{
- int i;
- int slen1 = strlen(string1);
- int slen2 = strlen(string2);
- char *tmpstr1, *tmpstr2;
+ /* Align and calculate total length */
+ len = ((data_len + 19) / 20) * 20;
+ blocks = (len / 10);
+ len = (len * 2) + ((blocks - 1) * 2) + (4 * blocks) + 2 + 1;
- 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] = '?';
- }
- }
- }
-
- /* 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;
-}
+ cp = fingerprint = silc_calloc(len, sizeof(*fingerprint));
+ if (!cp)
+ return NULL;
-/* 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. */
+ for (i = 0; i < data_len; i++) {
+ silc_snprintf(cp, len, "%02X", data[i]);
+ cp += 2;
+ len -= 2;
-uint32 silc_hash_string(void *key, void *user_context)
-{
- char *s = (char *)key;
- uint32 h = 0, g;
-
- while (*s != '\0') {
- h = (h << 4) + tolower(*s);
- if ((g = h & 0xf0000000)) {
- h = h ^ (g >> 24);
- h = h ^ g;
- }
- s++;
+ if ((i + 1) % 2 == 0)
+ silc_snprintf(cp++, len--, " ");
+ if ((i + 1) % 10 == 0)
+ silc_snprintf(cp++, len--, " ");
}
-
- return h;
-}
-
-/* Basic hash function to hash integers. May be used with the SilcHashTable. */
-
-uint32 silc_hash_uint(void *key, void *user_context)
-{
- return *(uint32 *)key;
-}
-
-/* Basic hash funtion to hash pointers. May be used with the SilcHashTable. */
+ i--;
+ if ((i + 1) % 10 == 0)
+ *(--cp) = '\0';
+ if ((i + 1) % 2 == 0)
+ *(--cp) = '\0';
-uint32 silc_hash_ptr(void *key, void *user_context)
-{
- return (uint32)key;
+ return fingerprint;
}
-/* Hash a ID. The `user_context' is the ID type. */
+/* Return TRUE if the `data' is ASCII string. */
-uint32 silc_hash_id(void *key, void *user_context)
+SilcBool silc_string_is_ascii(const unsigned char *data, SilcUInt32 data_len)
{
- SilcIdType id_type = (SilcIdType)(uint32)user_context;
- uint32 h = 0;
int i;
- switch (id_type) {
- case SILC_ID_CLIENT:
- {
- SilcClientID *id = (SilcClientID *)key;
- uint32 g;
-
- /* 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. */
-
- for (i = 0; i < sizeof(id->hash); i++) {
- h = (h << 4) + id->hash[i];
- if ((g = h & 0xf0000000)) {
- h = h ^ (g >> 24);
- h = h ^ g;
- }
- }
-
- return h;
- }
- break;
- case SILC_ID_SERVER:
- {
- 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 *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;
+ for (i = 0; i < data_len; i++) {
+ if (!isascii(data[i]))
+ return FALSE;
}
- return h;
+ return TRUE;
}
-/* Hash binary data. The `user_context' is the data length. */
+/* Displays input prompt on command line and takes input data from user */
-uint32 silc_hash_data(void *key, void *user_context)
+char *silc_get_input(const char *prompt, SilcBool echo_off)
{
- uint32 len = (uint32)user_context, h = 0;
- unsigned char *data = (unsigned char *)key;
- int i;
-
- h = (data[0] * data[len - 1] + 1) * len;
- for (i = 0; i < len; i++)
- h ^= data[i];
+#ifdef SILC_UNIX
+ int fd;
+ char input[2048];
- return h;
-}
+ if (echo_off) {
+ char *ret = NULL;
+#ifdef HAVE_TERMIOS_H
+ struct termios to;
+ struct termios to_old;
-/* Compares two strings. May be used as SilcHashTable comparison function. */
+ fd = open("/dev/tty", O_RDONLY);
+ if (fd < 0) {
+ silc_set_errno_posix(errno);
+ return NULL;
+ }
-bool silc_hash_string_compare(void *key1, void *key2, void *user_context)
-{
- return !strcasecmp((char *)key1, (char *)key2);
-}
+ signal(SIGINT, SIG_IGN);
-/* 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. */
+ /* Get terminal info */
+ tcgetattr(fd, &to);
+ to_old = to;
-bool silc_hash_id_compare(void *key1, void *key2, void *user_context)
-{
- SilcIdType id_type = (SilcIdType)(uint32)user_context;
- return (id_type == SILC_ID_CLIENT ?
- SILC_ID_COMPARE_HASH((SilcClientID *)key1, (SilcClientID *)key2) :
- SILC_ID_COMPARE_TYPE(key1, key2, id_type));
-}
+ /* 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);
-/* Compare two Client ID's entirely and not just the hash from the ID. */
+ memset(input, 0, sizeof(input));
-bool silc_hash_client_id_compare(void *key1, void *key2, void *user_context)
-{
- return SILC_ID_COMPARE_TYPE(key1, key2, SILC_ID_CLIENT);
-}
+ printf("%s", prompt);
+ fflush(stdout);
-/* Compares binary data. May be used as SilcHashTable comparison function. */
+ if ((read(fd, input, sizeof(input))) < 0) {
+ silc_set_errno_posix(errno);
+ tcsetattr(fd, TCSANOW, &to_old);
+ return NULL;
+ }
-bool silc_hash_data_compare(void *key1, void *key2, void *user_context)
-{
- uint32 len = (uint32)user_context;
- return !memcmp(key1, key2, len);
-}
+ if (strlen(input) <= 1) {
+ tcsetattr(fd, TCSANOW, &to_old);
+ silc_set_errno(SILC_ERR_EOF);
+ return NULL;
+ }
-/* Parses mode mask and returns the mode as string. */
+ if (strchr(input, '\n'))
+ *strchr(input, '\n') = '\0';
-char *silc_client_chmode(uint32 mode, const char *cipher, const char *hmac)
-{
- char string[100];
+ /* Restore old terminfo */
+ tcsetattr(fd, TCSANOW, &to_old);
+ signal(SIGINT, SIG_DFL);
- if (!mode)
- return NULL;
+ 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) {
+ silc_set_errno_posix(errno);
+ return NULL;
+ }
- memset(string, 0, sizeof(string));
+ memset(input, 0, sizeof(input));
- if (mode & SILC_CHANNEL_MODE_PRIVATE)
- strncat(string, "p", 1);
+ printf("%s", prompt);
+ fflush(stdout);
- if (mode & SILC_CHANNEL_MODE_SECRET)
- strncat(string, "s", 1);
+ if ((read(fd, input, sizeof(input))) < 0) {
+ silc_set_errno_posix(errno);
+ return NULL;
+ }
- if (mode & SILC_CHANNEL_MODE_PRIVKEY)
- strncat(string, "k", 1);
+ if (strlen(input) <= 1) {
+ silc_set_errno(SILC_ERR_EOF);
+ return NULL;
+ }
- if (mode & SILC_CHANNEL_MODE_INVITE)
- strncat(string, "i", 1);
+ if (strchr(input, '\n'))
+ *strchr(input, '\n') = '\0';
- if (mode & SILC_CHANNEL_MODE_TOPIC)
- strncat(string, "t", 1);
+ return silc_strdup(input);
+ }
+#else
+ return NULL;
+#endif /* SILC_UNIX */
+}
- if (mode & SILC_CHANNEL_MODE_ULIMIT)
- strncat(string, "l", 1);
+/* Hexdump */
- if (mode & SILC_CHANNEL_MODE_PASSPHRASE)
- strncat(string, "a", 1);
+void silc_hexdump(const unsigned char *data, SilcUInt32 data_len,
+ FILE *output)
+{
+ int i, k;
+ int off, pos, count;
+ int len = data_len;
- if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)
- strncat(string, "f", 1);
+ k = 0;
+ pos = 0;
+ count = 16;
+ off = len % 16;
+ while (1) {
+ if (off) {
+ if ((len - pos) < 16 && (len - pos <= len - off))
+ count = off;
+ } else {
+ if (pos == len)
+ count = 0;
+ }
+ if (off == len)
+ count = len;
- if (mode & SILC_CHANNEL_MODE_CIPHER)
- strncat(string, cipher, strlen(cipher));
+ if (count)
+ fprintf(output, "%08X ", k++ * 16);
- if (mode & SILC_CHANNEL_MODE_HMAC)
- strncat(string, hmac, strlen(hmac));
+ for (i = 0; i < count; i++) {
+ fprintf(output, "%02X ", data[pos + i]);
- /* Rest of mode is ignored */
+ if ((i + 1) % 4 == 0)
+ fprintf(output, " ");
+ }
- return strdup(string);
-}
+ if (count && count < 16) {
+ int j;
-/* Parses channel user mode mask and returns te mode as string */
+ for (j = 0; j < 16 - count; j++) {
+ fprintf(output, " ");
-char *silc_client_chumode(uint32 mode)
-{
- char string[4];
+ if ((j + count + 1) % 4 == 0)
+ fprintf(output, " ");
+ }
+ }
- if (!mode)
- return NULL;
+ for (i = 0; i < count; i++) {
+ char ch;
- memset(string, 0, sizeof(string));
+ if (data[pos] < 32 || data[pos] >= 127)
+ ch = '.';
+ else
+ ch = data[pos];
- if (mode & SILC_CHANNEL_UMODE_CHANFO)
- strncat(string, "f", 1);
+ fprintf(output, "%c", ch);
+ pos++;
+ }
- if (mode & SILC_CHANNEL_UMODE_CHANOP)
- strncat(string, "o", 1);
+ if (count)
+ fprintf(output, "\n");
- return strdup(string);
+ if (count < 16)
+ break;
+ }
}
-/* Parses channel user mode and returns it as special mode character. */
+/* Convert hex string to data. Each hex number must have two characters. */
-char *silc_client_chumode_char(uint32 mode)
+SilcBool silc_hex2data(const char *hex, unsigned char *data,
+ SilcUInt32 data_size, SilcUInt32 *ret_data_len)
{
- char string[4];
+ char *cp = (char *)hex;
+ unsigned char l, h;
+ int i;
- if (!mode)
- return NULL;
+ if (data_size < strlen(hex) / 2) {
+ silc_set_errno(SILC_ERR_OVERFLOW);
+ return FALSE;
+ }
+
+ for (i = 0; i < strlen(hex) / 2; i++) {
+ h = *cp++;
+ l = *cp++;
- memset(string, 0, sizeof(string));
+ h -= h < 'A' ? '0' : 'A' - 10;
+ l -= l < 'A' ? '0' : 'A' - 10;
- if (mode & SILC_CHANNEL_UMODE_CHANFO)
- strncat(string, "*", 1);
+ data[i] = (h << 4) | (l & 0xf);
+ }
- if (mode & SILC_CHANNEL_UMODE_CHANOP)
- strncat(string, "@", 1);
+ if (ret_data_len)
+ *ret_data_len = i;
- return strdup(string);
+ return TRUE;
}
-/* Creates fingerprint from data, usually used with SHA1 digests */
+/* Converts binary data to HEX string */
-char *silc_fingerprint(const unsigned char *data, uint32 data_len)
+SilcBool silc_data2hex(const unsigned char *data, SilcUInt32 data_len,
+ char *hex, SilcUInt32 hex_size)
{
- char fingerprint[64], *cp;
+ unsigned char l, h;
+ char *cp = hex;
int i;
- memset(fingerprint, 0, sizeof(fingerprint));
- cp = fingerprint;
+ if (hex_size - 1 < data_len * 2) {
+ silc_set_errno(SILC_ERR_OVERFLOW);
+ return FALSE;
+ }
+
+ memset(hex, 0, hex_size);
+
for (i = 0; i < data_len; i++) {
- snprintf(cp, sizeof(fingerprint), "%02X", data[i]);
- cp += 2;
-
- if ((i + 1) % 2 == 0)
- snprintf(cp++, sizeof(fingerprint), " ");
+ l = data[i];
+ h = l >> 4;
+ l &= 0xf;
- if ((i + 1) % 10 == 0)
- snprintf(cp++, sizeof(fingerprint), " ");
+ *cp++ = h + (h > 9 ? 'A' - 10 : '0');
+ *cp++ = l + (l > 9 ? 'A' - 10 : '0');
}
- i--;
- if ((i + 1) % 2 == 0)
- cp[-2] = 0;
- if ((i + 1) % 10 == 0)
- cp[-1] = 0;
-
- return strdup(fingerprint);
+
+ return TRUE;
}
projects / silc.git / blobdiff