for authenticated access record the authenticated username in the logs

[rsync/rsync.git] / authenticate.c

diff --git a/authenticate.c b/authenticate.c
index 6a389db..0ff318b 100644 (file)
--- a/authenticate.c
+++ b/authenticate.c
@@ -125,21 +125,28 @@ void generate_hash(char *in, char *challenge, char *out)
 }
 
 /* possible negotiate authentication with the client. Use "leader" to
-   start off the auth if necessary */
-int auth_server(int fd, int module, char *addr, char *leader)
+   start off the auth if necessary 
+
+   return NULL if authentication failed
+
+   return "" if anonymous access
+
+   otherwise return username
+*/
+char *auth_server(int fd, int module, char *addr, char *leader)
 {
        char *users = lp_auth_users(module);
        char challenge[16];
        char b64_challenge[30];
        char line[MAXPATHLEN];
-       char user[100];
+       static char user[100];
        char secret[100];
        char pass[30];
        char pass2[30];
        char *tok;
 
        /* if no auth list then allow anyone in! */
-       if (!users || !*users) return 1;
+       if (!users || !*users) return "";
 
        gen_challenge(addr, challenge);
        
@@ -148,18 +155,18 @@ int auth_server(int fd, int module, char *addr, char *leader)
        io_printf(fd,"%s%s\n", leader, b64_challenge);
 
        if (!read_line(fd, line, sizeof(line)-1)) {
-               return 0;
+               return NULL;
        }
 
        memset(user, 0, sizeof(user));
        memset(pass, 0, sizeof(pass));
 
        if (sscanf(line,"%99s %29s", user, pass) != 2) {
-               return 0;
+               return NULL;
        }
 
        users = strdup(users);
-       if (!users) return 0;
+       if (!users) return NULL;
 
        for (tok=strtok(users," ,\t"); tok; tok = strtok(NULL," ,\t")) {
                if (strcmp(tok, user) == 0) break;
@@ -167,19 +174,22 @@ int auth_server(int fd, int module, char *addr, char *leader)
        free(users);
 
        if (!tok) {
-               return 0;
+               return NULL;
        }
        
        memset(secret, 0, sizeof(secret));
        if (!get_secret(module, user, secret, sizeof(secret)-1)) {
                memset(secret, 0, sizeof(secret));
-               return 0;
+               return NULL;
        }
 
        generate_hash(secret, b64_challenge, pass2);
        memset(secret, 0, sizeof(secret));
        
-       return (strcmp(pass, pass2) == 0);
+       if (strcmp(pass, pass2) == 0)
+               return user;
+
+       return NULL;
 }