+ initial

CMakeLists.txt

@@ -0,0 +1,16 @@
+SET(CNAME "openvpn-auth-ldap")
+SET(VERSION 0.01)
+
+PROJECT(${CNAME} C)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+
+SET(CMAKE_INSTALL_PREFIX "/usr")
+SET(INSTALL_LIB "${CMAKE_INSTALL_PREFIX}/lib/openvpn")
+
+MESSAGE (STATUS "------------------------------------------")
+MESSAGE (STATUS "Build type is:        ${CMAKE_BUILD_TYPE}")
+MESSAGE (STATUS "")
+MESSAGE (STATUS "Install prefix:       ${CMAKE_INSTALL_PREFIX}")
+MESSAGE (STATUS "Library directory:    ${INSTALL_LIB}")
+
+ADD_SUBDIRECTORY (src)

src/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_library("openvpn-auth-ldap" SHARED "config.c" "main.c")
+
+install(TARGETS "openvpn-auth-ldap"
+        LIBRARY DESTINATION "${INSTALL_LIB}")

src/config.c

@@ -0,0 +1,77 @@
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "config.h"
+
+#define BUFSIZE 1024
+
+int parse_config(oal_config_t * const config, const char *file) {
+  FILE *f;
+  const size_t bufsize = 1024;
+  unsigned short linenum = 0;
+  char buf[BUFSIZE];
+  char err[BUFSIZE];
+  char *key, *value;
+  size_t valsize;
+
+  if ((f = fopen(file, "r")) == NULL) {
+    snprintf(err, bufsize, "can't open file: %s", strerror(errno));
+    config->error = strndup(err, bufsize);
+    return 1;
+  }
+
+  while (fgets(buf, BUFSIZE, f)) {
+    linenum++;
+    key = buf;
+    while (isspace(*key))
+      key++;
+    if (*key == '#')
+      continue; /* ignore comments */
+    if (!isalpha(*key)) {
+      snprintf(err, bufsize, "can't parse line %d", linenum);
+      config->error = strdup(err);
+      return 1;
+    }
+    value = key;
+    while(*value && !isspace(*value))
+      value++;
+    if (!isspace(value)) {
+      snprintf(err, bufsize, "can't find value at line %d", linenum);
+      config->error = strndup(err, bufsize);
+      return 1;
+    }
+    *value = '\0', value += 1;
+    while (isspace(*value))
+      value++;
+    valsize = strnlen(value, bufsize - (value - buf));
+
+    if (strncmp(key, "bindurls", 6) == 0) {
+      config->bindurls = strndup(value, valsize);
+    } else
+    if (strncmp(key, "binddn", 6) == 0) {
+      config->binddn = strndup(value, valsize);
+    } else
+    if (strncmp(key, "bindpass", 8) == 0) {
+      config->bindpass = strndup(value, valsize);
+    } else
+    if (strncmp(key, "bindtimeout", 11) == 0) {
+      config->bindtimeout = atoi(value);
+    } else
+    if (strncmp(key, "basedn", 6) == 0) {
+      config->basedn = strndup(value, valsize);
+    } else
+    if (strncmp(key, "userfilter", 10) == 0) {
+      config->userfilter = strndup(value, valsize);
+    } else
+    {
+      snprintf(err, bufsize, "unknown key '%s' at line %d", key, linenum);
+      config->error = strndup(err, bufsize);
+      return 1;
+    }
+  }
+
+  return 0;
+}

src/config.h

@@ -0,0 +1,16 @@
+#ifndef OAL_CONFIG_H_INCLUDED
+#define OAL_CONFIG_H_INCLUDED
+
+typedef struct {
+  char   *bindurls;      /** space-separated list ldap of URIs */
+  char   *binddn;        /** bind as this user before search for user */
+  char   *bindpass;      /** bind with this password */
+  size_t  bindtimeout;   /** bind timeout */
+  char   *basedn;        /** where to search for users */
+  char   *userfilter;    /** ldap filter for user entry */
+  char   *error;         /** parser error */
+} oal_config_t;
+
+int parse_config(oal_config_t * const config, const char *file);
+
+#endif /* OAL_CONFIG_H_INCLUDED */

src/main.c

@@ -0,0 +1,19 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openvpn/openvpn-plugin.h>
+
+#include "config.h"
+
+int main(void) {
+  oal_config_t config;
+  memset(&config, 0x0, sizeof(oal_config_t));
+
+  if (!parse_config(&config, "test.conf")) {
+    fprintf(stderr, "config parser failed: %s\n", config.error);
+    exit(1);
+  }
+
+  return 0;
+}