/*
- silcutil.c
+ silcutil.c
Author: Pekka Riikonen <priikone@silcnet.org>
{
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;
}
return return_time;
}
-/* Converts string to capital characters */
+/* Converts string to capital characters. */
char *silc_to_upper(char *string)
{
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/* Encodes data into PEM encoding. Returns NULL terminated PEM encoded
- data string. Note: This is originally public domain code and is
+ data string. Note: This is originally public domain code and is
still PD. */
char *silc_encode_pem(unsigned char *data, SilcUInt32 len)
return data;
}
-/* Parse userfqdn string which is in user@fqdn format */
+/* Parse userfqdn string which is in user@fqdn format. */
bool silc_parse_userfqdn(const char *string, char **left, char **right)
{
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);
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,
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);
/* 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)); \
- } \
+#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)
snprintf(tmp, sizeof(tmp) - 1, ",%02x,", client_id->rnd);
_PUT_STRING(rid, tmp);
memset(tmp, 0, sizeof(tmp));
- snprintf(tmp, sizeof(tmp) - 1, "[%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]);
_PUT_STRING(rid, tmp);
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)
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;
}
{
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. */
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;
silc_hash_data(pk->pk, (void *)pk->pk_len));
}
-/* 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)
{
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)
{
SilcIdType id_type = (SilcIdType)(SilcUInt32)user_context;
- return (id_type == SILC_ID_CLIENT ?
+ return (id_type == SILC_ID_CLIENT ?
SILC_ID_COMPARE_HASH((SilcClientID *)key1, (SilcClientID *)key2) :
SILC_ID_COMPARE_TYPE(key1, key2, id_type));
}
return !memcmp(key1, key2, len);
}
-/* Compares two SILC Public keys. May be used as SilcHashTable comparison
- function. */
+/* 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)
{
if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)
strncat(string, "f", 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));
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. */
+
+bool 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. */
+
+bool 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);
+ cp = strchr(cp, '.');
+ if (cp) {
+ min = atoi(cp + 1);
+ 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;
+ cp = strchr(cp, '-');
+ if (!cp)
+ return FALSE;
+
+ maj = atoi(cp + 1);
+ cp = strchr(cp, '.');
+ if (cp)
+ min = atoi(cp + 1);
+
+ 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 */
+
+ cp++;
+ if (cp) {
+ cp = strchr(cp, '.');
+ if (cp && cp + 1 && vendor_version)
+ *vendor_version = strdup(cp + 1);
+ }
+
+ 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, bool echo_off)
+{
+#ifdef SILC_UNIX
+ if (echo_off) {
+ char *ret = NULL;
+#ifdef HAVE_TERMIOS_H
+ char input[2048];
+ int fd;
+ 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 */
+ to.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
+ 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));
+ 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_calloc(strlen(input), sizeof(char));
+ memcpy(ret, input, strlen(input));
+ memset(input, 0, sizeof(input));
+#endif /* HAVE_TERMIOS_H */
+ return ret;
+ } else {
+ char input[2048];
+ int fd;
+
+ 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 */
+}
projects / silc.git / blobdiff