File pam_env-remove-escaped-newlines.patch of Package pam

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File pam_env-remove-escaped-newlines.patch of Package pam (Revision 871b6fcdf66d43acc82c2ba74ed6b916)

Currently displaying revision 871b6fcdf66d43acc82c2ba74ed6b916 , Show latest

From ef51c51523b4c6ce6275b2863a0de1a3a6dff1e5 Mon Sep 17 00:00:00 2001
From: Tobias Stoeckmann <tobias@stoeckmann.org>
Date: Thu, 18 Jan 2024 20:25:20 +0100
Subject: [PATCH] pam_env: remove escaped newlines from econf lines

The libeconf routines do not remove escaped newlines the way we want to
process them later on. Manually remove them from values.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
---
 modules/pam_env/pam_env.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/modules/pam_env/pam_env.c b/modules/pam_env/pam_env.c
index a0b812fff..5f53fbb10 100644
--- a/modules/pam_env/pam_env.c
+++ b/modules/pam_env/pam_env.c
@@ -160,6 +160,28 @@ isDirectory(const char *path) {
    return S_ISDIR(statbuf.st_mode);
 }
 
+/*
+ * Remove escaped newline from string.
+ *
+ * All occurrences of "\\n" will be removed from string.
+ */
+static void
+econf_unescnl(char *val)
+{
+    char *dest, *p;
+
+    dest = p = val;
+
+    while (*p != '\0') {
+      if (p[0] == '\\' && p[1] == '\n') {
+	p += 2;
+      } else {
+	*dest++ = *p++;
+      }
+    }
+    *dest = '\0';
+}
+
 static int
 econf_read_file(const pam_handle_t *pamh, const char *filename, const char *delim,
 			   const char *name, const char *suffix, const char *subpath,
@@ -270,6 +292,7 @@ econf_read_file(const pam_handle_t *pamh, const char *filename, const char *deli
 		   keys[i],
 		   econf_errString(error));
       } else {
+        econf_unescnl(val);
         if (asprintf(&(*lines)[i],"%s%c%s", keys[i], delim[0], val) < 0) {
 	  pam_syslog(pamh, LOG_ERR, "Cannot allocate memory.");
           econf_free(keys);

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File pam_env-remove-escaped-newlines.patch of Package pam (Revision 871b6fcdf66d43acc82c2ba74ed6b916)

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