1 files changed, 95 insertions, 0 deletions
diff --git a/src/archives-wrapper.c b/src/archives-wrapper.c
new file mode 100644
index 000000000..89a23934b
--- /dev/null
+++ b/src/archives-wrapper.c
@@ -0,0 +1,95 @@
+/*
+** generic wrapper that will take info from a environment 
+** variable, and pass it to two commands.
+**
+** 10-17-96 : Hal Schechner
+** 12-14-96 : John Viega -- changed to work on 1 command, 
+**                          take a list of valid commands,
+**                          just pass on argv, and use execvp()
+**                          Also threw in some useful feedback for when there's
+**                          a failure, mainly for future debugging.
+**
+** Chmod this bitch 4755.
+**
+*/
+#include <stdio.h>
+
+const char *COMMAND = "/home/mailman/mailman/cgi/archives";
+
+/* Might want to make this full path.  
+   I can write whatever program named sendmail,
+   so this isn't much for security.
+*/
+const char *LEGAL_PARENT_NAMES[] = {
+  "httpd",
+  NULL /* Sentinal, don't remove */
+};
+
+/* Should make these arrays too... */
+const int  LEGAL_PARENT_UID = 60001;  /* nobody's UID */
+const int  LEGAL_PARENT_GID = 60001; /* nobody's GID */
+
+
+/*
+** what is the name of the process with pid of 'pid'
+*/
+char *get_process_name(int pid) {
+    FILE *proc;
+    char fname[30];
+    char tmp[255];
+    static char procname[255];
+    sprintf(fname, "/proc/%d/status", pid);
+    proc = fopen(fname, "r");
+    fgets(tmp, 256, proc);
+    sscanf(tmp, "Name:   %s\n", procname);
+    fclose(proc);
+    return procname;
+}
+
+
+int valid_parent(char *parent){
+  int i = 0;
+
+  while(LEGAL_PARENT_NAMES[i] != NULL)
+    {
+      if(!strcmp(parent, LEGAL_PARENT_NAMES[i]))
+	{
+	  return 1;
+	}
+      i++;
+    }
+  return 0;
+}
+
+/* 
+** is the parent process allowed to call us?
+*/
+int legal_caller() {
+    /* compare to our parent's uid */
+    if(LEGAL_PARENT_UID != getuid()) 
+      {
+	printf("GOT UID %d.\n", getuid());
+        return 0;
+      }
+    if(LEGAL_PARENT_GID != getgid())
+      {
+	printf("GOT GID %d.\n", getgid());
+        return 0;
+      }
+    return 1;
+}
+
+void main(int argc, char **argv, char **env) {
+  char  *command;
+  int   i;
+  command = (char *)malloc(sizeof(char) * i);
+
+  if(legal_caller()) {
+    setuid(geteuid());
+    execve(COMMAND, &argv[0], env);
+  }
+    else {
+      printf("Illegal caller!\n");
+    }
+}
+