/*
- silcutil.c
+ silcutil.c
Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2002 Pekka Riikonen
+ Copyright (C) 1997 - 2005 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
*/
/* $Id$ */
-#include "silcincludes.h"
+#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)
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;
}
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;
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. */
+/* Returns time as string. If the the `timeval' is non-zero that
+ value is returned as string. If it is zero the current time of the
+ local machine is returned. */
-char *silc_get_time()
+const char *silc_get_time(SilcUInt32 timeval)
{
time_t curtime;
char *return_time;
- curtime = time(NULL);
+ if (!timeval)
+ curtime = time(NULL);
+ else
+ curtime = (time_t)timeval;
return_time = ctime(&curtime);
return_time[strlen(return_time) - 1] = '\0';
- return return_time;
+ return (const char *)return_time;
}
-/* 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));
+
+ if (strlen(string) > dest_size)
+ return FALSE;
for (i = 0; i < strlen(string); i++)
- ret[i] = toupper(string[i]);
+ dest[i] = toupper(string[i]);
- return ret;
+ return TRUE;
}
-static unsigned char pem_enc[64] =
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+/* Converts string to lower letter characters. */
-/* 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, SilcUInt32 len)
+SilcBool silc_to_lower(const char *string, char *dest, SilcUInt32 dest_size)
{
- int i, j;
- SilcUInt32 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++;
+ int i;
- 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] = tolower(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, SilcUInt32 data_len)
+int silc_parse_userfqdn(const char *string,
+ char *user, SilcUInt32 user_size,
+ char *fqdn, SilcUInt32 fqdn_size)
{
- int i, j;
- SilcUInt32 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));
+ if (!string || (!user && !fqdn))
+ return 0;
- for (i = 0, j = 0, cols = 1; i < len; i++, cols++) {
- if (cols == 72) {
- pem2[i] = '\n';
- cols = 0;
- len++;
- continue;
+ if (string[0] == '@') {
+ if (user) {
+ memset(user, 0, user_size);
+ silc_strncat(user, user_size, string, strlen(string));
}
- pem2[i] = pem[j++];
+ return 1;
}
- silc_free(pem);
- return pem2;
-}
-
-/* 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, SilcUInt32 pem_len,
- SilcUInt32 *ret_len)
-{
- int i, j;
- SilcUInt32 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;
- }
-
- 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;
+ if (strchr(string, '@')) {
+ tlen = strcspn(string, "@");
- bits += decoder[c];
- char_count++;
+ if (user) {
+ memset(user, 0, user_size);
+ silc_strncat(user, user_size, string, tlen);
+ }
- 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 (fqdn) {
+ memset(fqdn, 0, fqdn_size);
+ silc_strncat(fqdn, fqdn_size, string + tlen + 1,
+ strlen(string) - tlen - 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;
+ return 2;
}
- if (ret_len)
- *ret_len = j;
-
- return data;
-}
-
-/* Parse userfqdn string which is in user@fqdn format */
-
-bool silc_parse_userfqdn(const char *string, char **left, char **right)
-{
- SilcUInt32 tlen;
-
- if (!string)
- return FALSE;
-
- if (string[0] == '@') {
- if (left)
- *left = strdup(string);
- return TRUE;
+ if (user) {
+ memset(user, 0, user_size);
+ silc_strncat(user, user_size, string, strlen(string));
}
- 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);
- }
-
- 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,
SilcUInt32 **parsed_lens,
SilcUInt32 **parsed_types,
/* 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);
/* Renders ID to suitable to print for example to log file. */
static char rid[256];
+#define _PUT_STRING(__d__, __s__) \
+do { \
+ int __sp = sizeof(__d__) - 1 - strlen(__d__); \
+ if (__sp < strlen(__s__)) { \
+ if (__sp) \
+ strncat(__d__, __s__, (sizeof(__d__) - 1) - strlen(__d__)); \
+ } else { \
+ strncat(__d__, __s__, strlen(__s__)); \
+ } \
+} while(0)
char *silc_id_render(void *id, SilcUInt16 type)
{
char tmp[100];
unsigned char tmps[2];
+ char *cp;
memset(rid, 0, sizeof(rid));
switch(type) {
ipv6.sin6_family = AF_INET6;
memmove(&ipv6.sin6_addr, server_id->ip.data, sizeof(ipv6.sin6_addr));
if (!getnameinfo((struct sockaddr *)&ipv6, sizeof(ipv6),
- tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST))
- strcat(rid, tmp);
+ tmp, sizeof(tmp) - 1, NULL, 0, NI_NUMERICHOST))
+ _PUT_STRING(rid, tmp);
#endif
} else {
struct in_addr ipv4;
memmove(&ipv4.s_addr, server_id->ip.data, 4);
- strcat(rid, inet_ntoa(ipv4));
+ cp = inet_ntoa(ipv4);
+ if (cp)
+ _PUT_STRING(rid, cp);
}
memset(tmp, 0, sizeof(tmp));
- snprintf(tmp, sizeof(tmp), ",%d,", ntohs(server_id->port));
- strcat(rid, tmp);
+ snprintf(tmp, sizeof(tmp) - 1, ",%d,", ntohs(server_id->port));
+ _PUT_STRING(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);
+ snprintf(tmp, sizeof(tmp) - 1, "[%02x %02x]", tmps[0], tmps[1]);
+ _PUT_STRING(rid, tmp);
}
break;
case SILC_ID_CLIENT:
ipv6.sin6_family = AF_INET6;
memmove(&ipv6.sin6_addr, client_id->ip.data, sizeof(ipv6.sin6_addr));
if (!getnameinfo((struct sockaddr *)&ipv6, sizeof(ipv6),
- tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST))
- strcat(rid, tmp);
+ tmp, sizeof(tmp) - 1, NULL, 0, NI_NUMERICHOST))
+ _PUT_STRING(rid, tmp);
#endif
} else {
struct in_addr ipv4;
memmove(&ipv4.s_addr, client_id->ip.data, 4);
- strcat(rid, inet_ntoa(ipv4));
+ cp = inet_ntoa(ipv4);
+ if (cp)
+ _PUT_STRING(rid, cp);
}
memset(tmp, 0, sizeof(tmp));
- snprintf(tmp, sizeof(tmp), ",%02x,", client_id->rnd);
- strcat(rid, tmp);
+ snprintf(tmp, sizeof(tmp) - 1, ",%02x,", client_id->rnd);
+ _PUT_STRING(rid, tmp);
memset(tmp, 0, sizeof(tmp));
- snprintf(tmp, sizeof(tmp), "[%02x %02x %02x %02x...]",
+ snprintf(tmp, sizeof(tmp) - 1, "[%02x %02x %02x %02x...]",
client_id->hash[0], client_id->hash[1],
client_id->hash[2], client_id->hash[3]);
- strcat(rid, tmp);
+ _PUT_STRING(rid, tmp);
}
break;
case SILC_ID_CHANNEL:
ipv6.sin6_family = AF_INET6;
memmove(&ipv6.sin6_addr, channel_id->ip.data, sizeof(ipv6.sin6_addr));
if (!getnameinfo((struct sockaddr *)&ipv6, sizeof(ipv6),
- tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST))
- strcat(rid, tmp);
+ tmp, sizeof(tmp) - 1, NULL, 0, NI_NUMERICHOST))
+ _PUT_STRING(rid, tmp);
#endif
} else {
struct in_addr ipv4;
memmove(&ipv4.s_addr, channel_id->ip.data, 4);
- strcat(rid, inet_ntoa(ipv4));
+ cp = inet_ntoa(ipv4);
+ if (cp)
+ _PUT_STRING(rid, cp);
}
memset(tmp, 0, sizeof(tmp));
- snprintf(tmp, sizeof(tmp), ",%d,", ntohs(channel_id->port));
- strcat(rid, tmp);
+ snprintf(tmp, sizeof(tmp) - 1, ",%d,", ntohs(channel_id->port));
+ _PUT_STRING(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);
+ snprintf(tmp, sizeof(tmp) - 1, "[%02x %02x]", tmps[0], tmps[1]);
+ _PUT_STRING(rid, tmp);
}
break;
}
return rid;
}
+#undef _PUT_STRING
-/* Compares two strings. Strings may include wildcards * and ?.
+/* Compares two strings. Strings may include wildcards '*' and '?'.
Returns TRUE if strings match. */
int silc_string_compare(char *string1, char *string2)
slen2 = strlen(string2);
/* See if they are same already */
- if (!strncmp(string1, string2, strlen(string2)))
+ if (!strncmp(string1, string2, slen2) && slen2 == slen1)
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)) {
strncpy(tmpstr2, tmpstr1, i);
break;
}
-
+
/* ? wildcard */
if (tmpstr1[i] == '?') {
if (!strncmp(tmpstr1, tmpstr2, i)) {
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(tmpstr2);
return TRUE;
}
-
+
memset(tmpstr1, 0, slen1);
memset(tmpstr2, 0, slen2);
silc_free(tmpstr1);
return FALSE;
}
-/* Basic has function to hash strings. May be used with the SilcHashTable.
+/* 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. */
{
char *s = (char *)key;
SilcUInt32 h = 0, g;
-
+
while (*s != '\0') {
h = (h << 4) + tolower(*s);
if ((g = h & 0xf0000000)) {
}
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;
}
SilcUInt32 silc_hash_uint(void *key, void *user_context)
{
- return *(SilcUInt32 *)key;
+ return SILC_PTR_TO_32(key);
}
/* Basic hash funtion to hash pointers. May be used with the SilcHashTable. */
SilcUInt32 silc_hash_ptr(void *key, void *user_context)
{
- return (SilcUInt32)key;
+ return SILC_PTR_TO_32(key);
}
/* Hash a ID. The `user_context' is the ID type. */
SilcUInt32 silc_hash_id(void *key, void *user_context)
{
- SilcIdType id_type = (SilcIdType)(SilcUInt32)user_context;
+ SilcIdType id_type = (SilcIdType)SILC_PTR_TO_32(user_context);
SilcUInt32 h = 0;
int i;
case SILC_ID_CLIENT:
{
SilcClientID *id = (SilcClientID *)key;
- SilcUInt32 g;
-
- /* The client ID is hashed by hashing the hash of the ID
+
+ /* 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;
+ return silc_hash_client_id_hash(id->hash, NULL);
}
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;
return h;
}
+/* Hash Client ID's hash. */
+
+SilcUInt32 silc_hash_client_id_hash(void *key, void *user_context)
+{
+ int 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;
+ }
+ }
+
+ return h;
+}
+
/* Hash binary data. The `user_context' is the data length. */
SilcUInt32 silc_hash_data(void *key, void *user_context)
{
- SilcUInt32 len = (SilcUInt32)user_context, h = 0;
+ SilcUInt32 len = SILC_PTR_TO_32(user_context), h = 0;
unsigned char *data = (unsigned char *)key;
int i;
return h;
}
-/* Hashed SILC Public key. */
+/* Hash public key of any type. */
SilcUInt32 silc_hash_public_key(void *key, void *user_context)
{
- SilcPublicKey pk = (SilcPublicKey)key;
- return (pk->len + silc_hash_string(pk->name, NULL) +
- silc_hash_string(pk->identifier, NULL) +
- silc_hash_data(pk->pk, (void *)pk->pk_len));
+ SilcPublicKey public_key = key;
+ unsigned char *pk;
+ SilcUInt32 pk_len;
+ SilcUInt32 hash = 0;
+
+ pk = silc_pkcs_public_key_encode(public_key, &pk_len);
+ if (!pk)
+ return hash;
+
+ hash = silc_hash_data(pk, SILC_32_TO_PTR(pk_len));
+ silc_free(pk);
+
+ return hash;
}
-/* Compares two strings. May be used as SilcHashTable comparison function. */
+/* Compares two strings. It may be used as SilcHashTable comparison
+ function. */
-bool silc_hash_string_compare(void *key1, void *key2, void *user_context)
+SilcBool silc_hash_string_compare(void *key1, void *key2, void *user_context)
{
return !strcasecmp((char *)key1, (char *)key2);
}
-/* Compares two ID's. May be used as SilcHashTable comparison function.
+/* 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. */
-bool silc_hash_id_compare(void *key1, void *key2, void *user_context)
+SilcBool silc_hash_id_compare(void *key1, void *key2, void *user_context)
{
- SilcIdType id_type = (SilcIdType)(SilcUInt32)user_context;
- return (id_type == SILC_ID_CLIENT ?
+ 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));
}
+/* Compares two ID's. Compares full IDs. */
+
+SilcBool silc_hash_id_compare_full(void *key1, void *key2, void *user_context)
+{
+ SilcIdType id_type = (SilcIdType)SILC_PTR_TO_32(user_context);
+ return SILC_ID_COMPARE_TYPE(key1, key2, id_type);
+}
+
/* Compare two Client ID's entirely and not just the hash from the ID. */
-bool silc_hash_client_id_compare(void *key1, void *key2, void *user_context)
+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. */
-bool silc_hash_data_compare(void *key1, void *key2, void *user_context)
+SilcBool silc_hash_data_compare(void *key1, void *key2, void *user_context)
{
- SilcUInt32 len = (SilcUInt32)user_context;
+ SilcUInt32 len = SILC_PTR_TO_32(user_context);
return !memcmp(key1, key2, len);
}
-/* Compares two SILC Public keys. May be used as SilcHashTable comparison
- function. */
+/* Compares UTF-8 string. */
+
+SilcBool silc_hash_utf8_compare(void *key1, void *key2, void *user_context)
+{
+ int l1 = strlen((char *)key1);
+ int l2 = strlen((char *)key2);
+ if (l1 != l2)
+ return FALSE;
+ return !memcmp(key1, key2, l2);
+}
+
+/* Compares two SILC Public keys. It may be used as SilcHashTable
+ comparison function. */
-bool silc_hash_public_key_compare(void *key1, void *key2, void *user_context)
+SilcBool silc_hash_public_key_compare(void *key1, void *key2,
+ void *user_context)
{
return silc_pkcs_public_key_compare(key1, key2);
}
if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)
strncat(string, "f", 1);
+ if (mode & SILC_CHANNEL_MODE_CHANNEL_AUTH)
+ strncat(string, "C", 1);
+
+ if (mode & SILC_CHANNEL_MODE_SILENCE_USERS)
+ strncat(string, "m", 1);
+
+ if (mode & SILC_CHANNEL_MODE_SILENCE_OPERS)
+ strncat(string, "M", 1);
+
if (mode & SILC_CHANNEL_MODE_CIPHER)
- strncat(string, cipher, strlen(cipher));
+ strncat(string, "c", 1);
if (mode & SILC_CHANNEL_MODE_HMAC)
- strncat(string, hmac, strlen(hmac));
+ strncat(string, "h", 1);
+
+ if (mode & SILC_CHANNEL_MODE_CIPHER) {
+ if (strlen(cipher) + strlen(string) + 1< sizeof(string)) {
+ strncat(string, " ", 1);
+ strncat(string, cipher, strlen(cipher));
+ }
+ }
+
+ if (mode & SILC_CHANNEL_MODE_HMAC) {
+ if (strlen(hmac) + strlen(string) + 1< sizeof(string)) {
+ strncat(string, " ", 1);
+ strncat(string, hmac, strlen(hmac));
+ }
+ }
/* Rest of mode is ignored */
char *silc_client_chumode(SilcUInt32 mode)
{
- char string[4];
+ char string[64];
if (!mode)
return NULL;
if (mode & SILC_CHANNEL_UMODE_CHANOP)
strncat(string, "o", 1);
+ if (mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES)
+ strncat(string, "b", 1);
+
+ if (mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS)
+ strncat(string, "u", 1);
+
+ if (mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS)
+ strncat(string, "r", 1);
+
+ if (mode & SILC_CHANNEL_UMODE_QUIET)
+ strncat(string, "q", 1);
+
return strdup(string);
}
char *silc_client_chumode_char(SilcUInt32 mode)
{
- char string[4];
+ char string[64];
if (!mode)
return NULL;
if (mode & SILC_CHANNEL_UMODE_CHANOP)
strncat(string, "@", 1);
+ if (mode & SILC_CHANNEL_UMODE_QUIET)
+ strncat(string, "&", 1);
+
return strdup(string);
}
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), " ");
cp[-2] = 0;
if ((i + 1) % 10 == 0)
cp[-1] = 0;
-
+
return strdup(fingerprint);
}
+
+/* Return TRUE if the `data' is ASCII string. */
+
+SilcBool silc_string_is_ascii(const unsigned char *data, SilcUInt32 data_len)
+{
+ int i;
+
+ for (i = 0; i < data_len; i++) {
+ if (!isascii(data[i]))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Parses SILC protocol style version string. */
+
+SilcBool silc_parse_version_string(const char *version,
+ SilcUInt32 *protocol_version,
+ char **protocol_version_string,
+ SilcUInt32 *software_version,
+ char **software_version_string,
+ char **vendor_version)
+{
+ char *cp, buf[32];
+ int maj = 0, min = 0;
+
+ if (!strstr(version, "SILC-"))
+ return FALSE;
+
+ cp = (char *)version + 5;
+ if (!cp)
+ return FALSE;
+
+ /* Take protocol version */
+
+ maj = atoi(cp);
+ if (!strchr(cp, '.'))
+ return FALSE;
+ cp = strchr(cp, '.') + 1;
+ if (!cp || !(*cp))
+ return FALSE;
+ min = atoi(cp);
+
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf) - 1, "%d%d", maj, min);
+ if (protocol_version)
+ *protocol_version = atoi(buf);
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf) - 1, "%d.%d", maj, min);
+ if (protocol_version_string)
+ *protocol_version_string = strdup(buf);
+
+ /* Take software version */
+
+ maj = 0;
+ min = 0;
+ if (!strchr(cp, '-'))
+ return FALSE;
+ cp = strchr(cp, '-') + 1;
+ if (!cp || !(*cp))
+ return FALSE;
+
+ maj = atoi(cp);
+ if (strchr(cp, '.')) {
+ cp = strchr(cp, '.') + 1;
+ if (cp && *cp)
+ min = atoi(cp);
+ }
+
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf) - 1, "%d%d", maj, min);
+ if (software_version)
+ *software_version = atoi(buf);
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf) - 1, "%d.%d", maj, min);
+ if (software_version_string)
+ *software_version_string = strdup(buf);
+
+ /* Take vendor string */
+
+ if (strchr(cp, '.')) {
+ cp = strchr(cp, '.') + 1;
+ if (cp && *cp && vendor_version)
+ *vendor_version = strdup(cp);
+ }
+
+ return TRUE;
+}
+
+/* Converts version string x.x into number representation. */
+
+SilcUInt32 silc_version_to_num(const char *version)
+{
+ int maj = 0, min = 0;
+ char *cp, buf[32];
+
+ if (!version)
+ return 0;
+
+ cp = (char *)version;
+ maj = atoi(cp);
+ cp = strchr(cp, '.');
+ if (cp)
+ min = atoi(cp + 1);
+
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf) - 1, "%d%d", maj, min);
+ return (SilcUInt32)atoi(buf);
+}
+
+/* Displays input prompt on command line and takes input data from user */
+
+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 */
+}
+
+/* Return mode list */
+
+SilcBool silc_get_mode_list(SilcBuffer mode_list, SilcUInt32 mode_list_count,
+ SilcUInt32 **list)
+{
+ int i;
+
+ if (silc_buffer_len(mode_list) / 4 != mode_list_count)
+ return FALSE;
+
+ *list = silc_calloc(mode_list_count, sizeof(**list));
+
+ for (i = 0; i < mode_list_count; i++) {
+ SILC_GET32_MSB((*list)[i], mode_list->data);
+ silc_buffer_pull(mode_list, 4);
+ }
+
+ silc_buffer_push(mode_list, mode_list->data - mode_list->head);
+
+ return TRUE;
+}
+
+/* Status message structure. Messages are defined below. */
+typedef struct {
+ SilcStatus status;
+ const char *message;
+} SilcStatusMessage;
+
+#define STAT(x) SILC_STATUS_ERR_##x
+static const SilcStatusMessage silc_status_messages[] = {
+
+ { STAT(NO_SUCH_NICK), "There was no such nickname" },
+ { STAT(NO_SUCH_CHANNEL), "There was no such channel" },
+ { STAT(NO_SUCH_SERVER), "There was no such server" },
+ { STAT(INCOMPLETE_INFORMATION), "Incomplete registration information" },
+ { STAT(NO_RECIPIENT), "No recipient given" },
+ { STAT(UNKNOWN_COMMAND), "Unknown command" },
+ { STAT(WILDCARDS), "Wilcrads not allowed" },
+ { STAT(NO_CLIENT_ID), "No Client ID given" },
+ { STAT(NO_CHANNEL_ID), "No Channel ID given" },
+ { STAT(NO_SERVER_ID), "No Server ID given" },
+ { STAT(BAD_CLIENT_ID), "Bad Client ID" },
+ { STAT(BAD_CHANNEL_ID), "Bad Channel ID" },
+ { STAT(NO_SUCH_CLIENT_ID), "There is no such client" },
+ { STAT(NO_SUCH_CHANNEL_ID),"There is no such channel" },
+ { STAT(NICKNAME_IN_USE), "Nickname already exists" },
+ { STAT(NOT_ON_CHANNEL), "You are not on that channel" },
+ { STAT(USER_NOT_ON_CHANNEL),"They are not on the channel" },
+ { STAT(USER_ON_CHANNEL), "User already on the channel" },
+ { STAT(NOT_REGISTERED), "You have not registered" },
+ { STAT(NOT_ENOUGH_PARAMS), "Not enough parameters" },
+ { STAT(TOO_MANY_PARAMS), "Too many parameters" },
+ { STAT(PERM_DENIED), "Permission denied" },
+ { STAT(BANNED_FROM_SERVER),"You are not allowed to connect" },
+ { STAT(BAD_PASSWORD), "Cannot join channel. Incorrect password" },
+ { STAT(CHANNEL_IS_FULL), "Cannot join channel. Channel is full" },
+ { STAT(NOT_INVITED), "Cannot join channel. You have not been invited" },
+ { STAT(BANNED_FROM_CHANNEL), "Cannot join channel. You have been banned" },
+ { STAT(UNKNOWN_MODE), "Unknown mode" },
+ { STAT(NOT_YOU), "Cannot change mode for other users" },
+ { STAT(NO_CHANNEL_PRIV), "Permission denied. You are not channel operator" },
+ { STAT(NO_CHANNEL_FOPRIV),"Permission denied. You are not channel founder" },
+ { STAT(NO_SERVER_PRIV), "Permission denied. You are not server operator" },
+ { STAT(NO_ROUTER_PRIV), "Permission denied. You are not SILC operator" },
+ { STAT(BAD_NICKNAME), "Bad nickname" },
+ { STAT(BAD_CHANNEL), "Bad channel name" },
+ { STAT(AUTH_FAILED), "Authentication failed" },
+ { STAT(UNKNOWN_ALGORITHM), "Unsupported algorithm" },
+ { STAT(NO_SUCH_SERVER_ID), "No such Server ID" },
+ { STAT(RESOURCE_LIMIT), "No more free resources" },
+ { STAT(NO_SUCH_SERVICE), "Service doesn't exist" },
+ { STAT(NOT_AUTHENTICATED), "You have not been authenticated" },
+ { STAT(BAD_SERVER_ID), "Server ID is not valid" },
+ { STAT(KEY_EXCHANGE_FAILED), "Key exchange failed" },
+ { STAT(BAD_VERSION), "Bad version" },
+ { STAT(TIMEDOUT), "Service timed out" },
+ { STAT(UNSUPPORTED_PUBLIC_KEY), "Unsupported public key type" },
+ { STAT(OPERATION_ALLOWED), "Operation is not allowed" },
+ { STAT(BAD_SERVER), "Bad server name" },
+ { STAT(BAD_USERNAME), "Bad user name" },
+
+ { 0, NULL }
+};
+
+/* Returns status message string */
+
+const char *silc_get_status_message(unsigned char status)
+{
+ int i;
+
+ for (i = 0; silc_status_messages[i].message; i++) {
+ if (silc_status_messages[i].status == status)
+ break;
+ }
+
+ if (silc_status_messages[i].message == NULL)
+ return "";
+
+ return silc_status_messages[i].message;
+}
+
+static const char *packet_name[] = {
+ "NONE",
+ "DISCONNECT",
+ "SUCCESS",
+ "FAILURE",
+ "REJECT",
+ "NOTIFY",
+ "ERROR",
+ "CHANNEL MESSAGE",
+ "CHANNEL KEY",
+ "PRIVATE MESSAGE",
+ "PRIVATE MESSAGE KEY",
+ "COMMAND",
+ "COMMAND REPLY",
+ "KEY EXCHANGE",
+ "KEY EXCHANGE 1",
+ "KEY EXCHANGE 2",
+ "CONNECTION AUTH REQUEST",
+ "CONNECTION AUTH",
+ "NEW ID",
+ "NEW CLIENT",
+ "NEW SERVER",
+ "NEW CHANNEL",
+ "REKEY",
+ "REKEY_DONE",
+ "HEARTBEAT",
+ "KEY AGREEMENT",
+ "RESUME ROUTER",
+ "FTP",
+ "RESUME CLIENT",
+};
+
+/* Returns packet type name */
+
+const char *silc_get_packet_name(unsigned char type)
+{
+ if (type >= SILC_PACKET_MAX)
+ return "RESERVED";
+ if (type >= SILC_PACKET_PRIVATE)
+ return "PRIVATE RANGE";
+ if (type > (sizeof(packet_name) / sizeof(*packet_name)))
+ return "UNKNOWN";
+ return packet_name[type];
+}
+
+static const char *command_name[] = {
+ "NONE",
+ "WHOIS",
+ "WHOWAS",
+ "IDENTIFY",
+ "NICK",
+ "LIST",
+ "TOPIC",
+ "INVITE",
+ "QUIT",
+ "KILL",
+ "INFO",
+ "STATS",
+ "PING",
+ "OPER",
+ "JOIN",
+ "MOTD",
+ "UMODE",
+ "CMODE",
+ "CUMODE",
+ "KICK",
+ "BAN",
+ "DETACH",
+ "WATCH",
+ "SILCOPER",
+ "LEAVE",
+ "USERS",
+ "GETKEY",
+ "SERVICE",
+};
+
+/* Returns command name */
+
+const char *silc_get_command_name(unsigned char command)
+{
+ if (command >= SILC_COMMAND_RESERVED)
+ return "RESERVED";
+ if (command >= SILC_COMMAND_PRIVATE)
+ return "PRIVATE RANGE";
+ if (command > (sizeof(command_name) / sizeof(*command_name)))
+ return "UNKNOWN";
+ return command_name[command];
+}
+
+/* Return TRUE if `smaller' is smaller than `bigger'. */
+
+SilcBool silc_compare_timeval(struct timeval *smaller,
+ struct timeval *bigger)
+{
+ if ((smaller->tv_sec < bigger->tv_sec) ||
+ ((smaller->tv_sec == bigger->tv_sec) &&
+ (smaller->tv_usec < bigger->tv_usec)))
+ return TRUE;
+
+ return FALSE;
+}
projects / silc.git / blobdiff