diff --git a/src/tacacs/nss/patch/0010-Send-remote-address-in-TACACS-authorization-message.patch b/src/tacacs/nss/patch/0010-Send-remote-address-in-TACACS-authorization-message.patch new file mode 100755 index 00000000000..023c857f944 --- /dev/null +++ b/src/tacacs/nss/patch/0010-Send-remote-address-in-TACACS-authorization-message.patch @@ -0,0 +1,88 @@ +From aec0ad4da85b0edbfa45f6deab1c0abbeecd4bbb Mon Sep 17 00:00:00 2001 +From: liuh-80 +Date: Wed, 28 Sep 2022 17:12:18 +0800 +Subject: [PATCH] Send remote address in TACACS+ authorization message. + +--- + nss_tacplus.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++- + 1 file changed, 52 insertions(+), 1 deletion(-) + +diff --git a/nss_tacplus.c b/nss_tacplus.c +index 2de00a6..00b0d17 100644 +--- a/nss_tacplus.c ++++ b/nss_tacplus.c +@@ -33,6 +33,7 @@ + #include + #include + #include ++#include + + #include + +@@ -717,6 +718,44 @@ connect_tacacs(struct tac_attrib **attr, int srvr) + return fd; + } + ++/* ++ * Get current SSH session remote address from environment variable ++ */ ++void get_remote_address(char* dst, socklen_t size) ++{ ++ memset(dst, 0, size); ++ char format[32]; ++ snprintf(format, sizeof(format), "%%%ds", (int)(size-1)); ++ ++ // SSHD will create environment variable SSH_CONNECTION after user session created. ++ const char* ssh_connection = getenv("SSH_CONNECTION"); ++ if (ssh_connection != NULL) { ++ // The first part of $SSH_CONNECTION is client IP address ++ sscanf(ssh_connection , format, dst); ++ if(debug) { ++ syslog(LOG_DEBUG, "%s: remote address=%s, SSH_CONNECTION=%s", nssname, ssh_connection, dst); ++ } ++ return; ++ } ++ ++ if(debug) { ++ syslog(LOG_DEBUG, "%s: can't get environment variable SSH_CONNECTION, errno=%d", nssname, errno); ++ } ++ ++ // Before user session created, SSHD will create environment variable SSH_REMOTE_IP. ++ const char* ssh_remote_ip = getenv("SSH_REMOTE_IP"); ++ if (ssh_remote_ip != NULL) { ++ snprintf (dst , size, "%s", ssh_remote_ip); ++ if(debug) { ++ syslog(LOG_DEBUG, "%s: remote address=%s", nssname, dst); ++ } ++ return; ++ } ++ ++ if(debug) { ++ syslog(LOG_DEBUG, "%s: can't get environment variable SSH_REMOTE_IP, errno=%d", nssname, errno); ++ } ++} + + /* + * lookup the user on a TACACS server. Returns 0 on successful lookup, else 1 +@@ -735,6 +778,9 @@ lookup_tacacs_user(struct pwbuf *pb) + int ret = 1, done = 0; + struct tac_attrib *attr; + int tac_fd, srvr; ++ char remote_addr[INET6_ADDRSTRLEN + 1]; ++ ++ get_remote_address(remote_addr, sizeof(remote_addr)); + + for(srvr=0; srvr < tac_srv_no && !done; srvr++) { + arep.msg = NULL; +@@ -748,7 +796,7 @@ lookup_tacacs_user(struct pwbuf *pb) + tac_ntop(tac_srv[srvr].addr->ai_addr) : "unknown", tac_fd); + continue; + } +- ret = tac_author_send(tac_fd, pb->name, "", "", attr); ++ ret = tac_author_send(tac_fd, pb->name, "", remote_addr, attr); + if(ret < 0) { + if(debug) + syslog(LOG_WARNING, "%s: TACACS+ server %s send failed (%d) for" +-- +2.37.1.windows.1 + diff --git a/src/tacacs/nss/patch/series b/src/tacacs/nss/patch/series index 83e2b31e484..7b9b5c5779a 100644 --- a/src/tacacs/nss/patch/series +++ b/src/tacacs/nss/patch/series @@ -7,3 +7,4 @@ 0007-Add-support-for-TACACS-source-address.patch 0008-do-not-create-or-modify-local-user-if-there-is-no-pr.patch 0009-fix-compile-error-strncpy.patch +0010-Send-remote-address-in-TACACS-authorization-message.patch