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Combine code for SSH_CONNECTION and SSH_CLIENT

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This commit is contained in:
Matt Johnston 2014-10-21 22:33:49 +08:00
parent 444b15889f
commit 776d908703
2 changed files with 16 additions and 25 deletions
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6
chansession.h
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@ -51,10 +51,10 @@ struct ChanSess {
/* exit details */
struct exitinfo exit;
/* Used to set $SSH_CONNECTION in the child session.
Is only set temporarily before forking */
char *connection_string;
/* These are only set temporarily before forking */
/* Used to set $SSH_CONNECTION in the child session. */
char *connection_string;
/* Used to set $SSH_CLIENT in the child session. */
char *client_string;

35
svr-chansession.c
View File

@ -603,34 +603,26 @@ static int sessionpty(struct ChanSess * chansess) {
return DROPBEAR_SUCCESS;
}
static char* make_connection_string() {
static void make_connection_string(struct ChanSess *chansess) {
char *local_ip, *local_port, *remote_ip, *remote_port;
size_t len;
char *ret;
get_socket_address(ses.sock_in, &local_ip, &local_port, &remote_ip, &remote_port, 0);
len = strlen(local_ip) + strlen(local_port) + strlen(remote_ip) + strlen(remote_port) + 4;
ret = m_malloc(len);
snprintf(ret, len, "%s %s %s %s", remote_ip, remote_port, local_ip, local_port);
m_free(local_ip);
m_free(local_port);
m_free(remote_ip);
m_free(remote_port);
return ret;
}
static char* make_client_string() {
char *local_ip, *local_port, *remote_ip, *remote_port;
size_t len;
char *ret;
get_socket_address(ses.sock_in, &local_ip, &local_port, &remote_ip, &remote_port, 0);
len = strlen(local_ip) + strlen(local_port) + strlen(remote_ip) + strlen(remote_port) + 4;
ret = m_malloc(len);
snprintf(ret, len, "%s %s %s", remote_ip, remote_port, local_port);
/* "remoteip remoteport localip localport" */
len = strlen(local_ip) + strlen(remote_ip) + 20;
chansess->connection_string = m_malloc(len);
snprintf(chansess->connection_string, len, "%s %s %s %s", remote_ip, remote_port, local_ip, local_port);
/* deprecated but bash only loads .bashrc if SSH_CLIENT is set */
/* "remoteip remoteport localport" */
len = strlen(remote_ip) + 20;
chansess->client_string = m_malloc(len);
snprintf(chansess->client_string, len, "%s %s %s", remote_ip, remote_port, local_port);
m_free(local_ip);
m_free(local_port);
m_free(remote_ip);
m_free(remote_port);
return ret;
}
/* Handle a command request from the client. This is used for both shell
@ -693,8 +685,7 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess,
/* uClinux will vfork(), so there'll be a race as
connection_string is freed below. */
#ifndef USE_VFORK
chansess->connection_string = make_connection_string();
chansess->client_string = make_client_string();
make_connection_string(chansess);
#endif
if (chansess->term == NULL) {