Merge tag 'debian/1.8.5p2-1' into squeeze

[debian/sudo] / src / conversation.c

diff --git a/src/conversation.c b/src/conversation.c
new file mode 100644 (file)
index 0000000..737335e
--- /dev/null
+++ b/src/conversation.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 1999-2005, 2007-2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#include <errno.h>
+
+#include "sudo.h"
+#include "sudo_plugin.h"
+#include "sudo_plugin_int.h"
+
+extern int tgetpass_flags; /* XXX */
+
+#if defined(HAVE_DLOPEN) || defined(HAVE_SHL_LOAD)
+sudo_conv_t sudo_conv; /* NULL in sudo front-end */
+#endif
+
+/*
+ * Sudo conversation function.
+ */
+int
+sudo_conversation(int num_msgs, const struct sudo_conv_message msgs[],
+    struct sudo_conv_reply replies[])
+{
+    struct sudo_conv_reply *repl;
+    const struct sudo_conv_message *msg;
+    char *pass;
+    int n, flags = tgetpass_flags;
+
+    for (n = 0; n < num_msgs; n++) {
+       msg = &msgs[n];
+       repl = &replies[n];
+       switch (msg->msg_type & 0xff) {
+           case SUDO_CONV_PROMPT_ECHO_ON:
+           case SUDO_CONV_PROMPT_MASK:
+               if (msg->msg_type == SUDO_CONV_PROMPT_ECHO_ON)
+                   SET(flags, TGP_ECHO);
+               else
+                   SET(flags, TGP_MASK);
+               /* FALLTHROUGH */
+           case SUDO_CONV_PROMPT_ECHO_OFF:
+               if (ISSET(msg->msg_type, SUDO_CONV_PROMPT_ECHO_OK))
+                   SET(flags, TGP_NOECHO_TRY);
+               /* Read the password unless interrupted. */
+               pass = tgetpass(msg->msg, msg->timeout, flags);
+               if (pass == NULL)
+                   goto err;
+               repl->reply = estrdup(pass);
+               zero_bytes(pass, strlen(pass));
+               break;
+           case SUDO_CONV_INFO_MSG:
+               if (msg->msg)
+                   (void) fputs(msg->msg, stdout);
+               break;
+           case SUDO_CONV_ERROR_MSG:
+               if (msg->msg)
+                   (void) fputs(msg->msg, stderr);
+               break;
+           case SUDO_CONV_DEBUG_MSG:
+               if (msg->msg)
+                   sudo_debug_write(msg->msg, strlen(msg->msg), 0);
+               break;
+           default:
+               goto err;
+       }
+    }
+
+    return 0;
+
+err:
+    /* Zero and free allocated memory and return an error. */
+    do {
+       repl = &replies[n];
+       if (repl->reply != NULL) {
+           zero_bytes(repl->reply, strlen(repl->reply));
+           free(repl->reply);
+           repl->reply = NULL;
+       }
+    } while (n--);
+
+    return -1;
+}
+
+int
+_sudo_printf(int msg_type, const char *fmt, ...)
+{
+    va_list ap;
+    FILE *fp;
+    int len;
+
+    switch (msg_type) {
+    case SUDO_CONV_INFO_MSG:
+       fp = stdout;
+       break;
+    case SUDO_CONV_ERROR_MSG:
+       fp = stderr;
+       break;
+    default:
+       errno = EINVAL;
+       return -1;
+    }
+
+    va_start(ap, fmt);
+    len = vfprintf(fp, fmt, ap);
+    va_end(ap);
+
+    return len;
+}