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| author | Ted Gould <ted@gould.cx> | 2012-08-30 11:34:13 -0500 |
|---|---|---|
| committer | Ted Gould <ted@gould.cx> | 2012-08-30 11:34:13 -0500 |
| commit | 63889954b78abbb9396fce05620f61e834e8a2ed (patch) | |
| tree | 2ec54f48305f7fd4408519785188879f7b79045b /src | |
| parent | 49131cc81474a9bc7f872f948ea148ca8a602e29 (diff) | |
| download | libpam-freerdp2-63889954b78abbb9396fce05620f61e834e8a2ed.tar.gz libpam-freerdp2-63889954b78abbb9396fce05620f61e834e8a2ed.tar.bz2 libpam-freerdp2-63889954b78abbb9396fce05620f61e834e8a2ed.zip | |
Use the pipe to signal when the subprocess has gotten to a point where it can opperate.
Diffstat (limited to 'src')
| -rw-r--r-- | src/pam-freerdp.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/pam-freerdp.c b/src/pam-freerdp.c index 9007a52..89c5d5d 100644 --- a/src/pam-freerdp.c +++ b/src/pam-freerdp.c @@ -33,6 +33,7 @@ #include <security/pam_appl.h> #define PAM_TYPE_DOMAIN 1234 +#define ALL_GOOD_SIGNAL "Ar, ready to authenticate cap'n" static char * global_domain = NULL; /* FIXME? This is a work around to the fact that PAM seems to be clearing @@ -269,6 +270,9 @@ session_socket_handler (struct passwd * pwdent, int readypipe, const char * ruse /* Track write out */ int writedata = 0; + /* Track ready writing */ + int readywrite = 0; + if (setgid(pwdent->pw_gid) < 0 || setuid(pwdent->pw_uid) < 0 || setegid(pwdent->pw_gid) < 0 || seteuid(pwdent->pw_uid) < 0) { /* Don't need to clean up yet */ @@ -337,6 +341,11 @@ session_socket_handler (struct passwd * pwdent, int readypipe, const char * ruse goto cleanup; } + readywrite = write(readypipe, ALL_GOOD_SIGNAL, strlen(ALL_GOOD_SIGNAL) + 1); + if (readywrite != strlen(ALL_GOOD_SIGNAL) + 1) { + goto cleanup; + } + connected_addr_size = sizeof(struct sockaddr_un); connectfd = accept(socketfd, (struct sockaddr *)&connected_addr, &connected_addr_size); if (connectfd < 0) { @@ -422,8 +431,18 @@ pam_sm_open_session (pam_handle_t *pamh, int flags, int argc, const char ** argv retval = PAM_SYSTEM_ERR; } else { + char readbuffer[strlen(ALL_GOOD_SIGNAL) + 1]; + int readlen = 0; + + readlen = read(sessionready[0], readbuffer, strlen(ALL_GOOD_SIGNAL) + 1); + close(sessionready[0]); - session_pid = pid; + + if (readlen == strlen(ALL_GOOD_SIGNAL) + 1) { + session_pid = pid; + } else { + retval = PAM_SYSTEM_ERR; + } } done: |