Implement authentication in the form of the bouncer having a configurable server password

1 files changed, 46 insertions, 1 deletions

diff --git a/config.c b/config.c
index 7fec4de..8bfead9 100644
--- a/config.c
+++ b/config.c
@@ -1,6 +1,6 @@
 #include "config.h"
 
-// TODO - Multiple functions here (at least readnames() and relayseconds() have the file opening code, rewrite.
+// TODO - Multiple functions here (at least readnames(), relayseconds() and checkpassword()) have the file opening code, rewrite.
 
 // TODO - Can isconf() and getconf() just be merged into one function?
 
@@ -136,5 +136,50 @@ int confrelayseconds() {
     }
   }
 
+  fclose(fp);
   return seconds;
 }
+
+// Check the password provided in the string 'str' against what is in
+// the config file.
+// Return 0 for password mismatch, or 1 for password match.
+int checkpassword(char *password) {
+  FILE *fp;
+  char str[MAXCHAR];
+  char* filename = "blabouncer.conf";
+
+  fp = fopen(filename, "r");
+
+  if (fp == NULL) {
+    printf("error: could not open configuration file '%s'.\n", filename);
+    exit(1);
+  }
+
+  while (fgets(str, MAXCHAR, fp) != NULL) {
+    long int len;
+    if ((len = isconf(str, "password"))) {
+      getconf(str, len);
+      printf("confpassword is: '%s', length '%ld'.\n", str, strlen(str));
+      // Ensure password are the same length
+      if (strlen(str) != strlen(password)) {
+        printf("Password length mismatch!\n");
+        fclose(fp);
+        return 0;
+      }
+      // Ensure passwords match
+      if (strncmp(str, password, strlen(password)) == 0) {
+        printf("confpassword matches password.\n");
+        fclose(fp);
+        return 1;
+      } else {
+        printf("confpassword does NOT match password!\n");
+        fclose(fp);
+        return 0;
+      }
+    }
+  }
+
+  fclose(fp);
+  printf("No password read from configuration file, quitting.\n");
+  exit(1);
+}