openldap/libraries/libldap/init.c

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/*
* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
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#include <ac/stdlib.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/ctype.h>
#include <ac/time.h>
#include "ldap-int.h"
#include "ldap_defaults.h"
struct ldapoptions ldap_int_global_options =
{ LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
#undef gopts
#define gopts ldap_int_global_options
#define ATTR_NONE 0
#define ATTR_BOOL 1
#define ATTR_INT 2
#define ATTR_KV 3
#define ATTR_STRING 4
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#define ATTR_TLS 5
struct ol_keyvalue {
const char * key;
int value;
};
static const struct ol_keyvalue deref_kv[] = {
{"never", LDAP_DEREF_NEVER},
{"searching", LDAP_DEREF_SEARCHING},
{"finding", LDAP_DEREF_FINDING},
{"always", LDAP_DEREF_ALWAYS},
{NULL, 0}
};
static const struct ol_attribute {
int type;
const char * name;
const void * data;
size_t offset;
} attrs[] = {
{ATTR_KV, "DEREF", deref_kv, /* or &deref_kv[0] */
offsetof(struct ldapoptions, ldo_deref)},
{ATTR_INT, "SIZELIMIT", NULL,
offsetof(struct ldapoptions, ldo_sizelimit)},
{ATTR_INT, "TIMELIMIT", NULL,
offsetof(struct ldapoptions, ldo_timelimit)},
{ATTR_STRING, "BASE", NULL,
offsetof(struct ldapoptions, ldo_defbase)},
{ATTR_STRING, "HOST", NULL,
offsetof(struct ldapoptions, ldo_defhost)},
{ATTR_INT, "PORT", NULL,
offsetof(struct ldapoptions, ldo_defport)},
{ATTR_BOOL, "REFERRALS", NULL, LDAP_BOOL_REFERRALS},
{ATTR_BOOL, "RESTART", NULL, LDAP_BOOL_RESTART},
{ATTR_BOOL, "DNS", NULL, LDAP_BOOL_DNS},
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{ATTR_BOOL, "TLS", NULL, LDAP_OPT_X_TLS},
{ATTR_TLS, "TLS_CERT", NULL, LDAP_OPT_X_TLS_CERTFILE},
{ATTR_TLS, "TLS_KEY", NULL, LDAP_OPT_X_TLS_KEYFILE},
{ATTR_TLS, "TLS_CACERT", NULL, LDAP_OPT_X_TLS_CACERTFILE},
{ATTR_TLS, "TLS_CACERTDIR",NULL, LDAP_OPT_X_TLS_CACERTDIR},
{ATTR_TLS, "TLS_REQCERT", NULL, LDAP_OPT_X_TLS_REQUIRE_CERT},
{ATTR_NONE, NULL, NULL, 0}
};
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#define MAX_LDAP_ATTR_LEN sizeof("TLS_CACERTDIR")
#define MAX_LDAP_ENV_PREFIX_LEN 8
static void openldap_ldap_init_w_conf(const char *file)
{
char linebuf[128];
FILE *fp;
int i;
char *cmd, *opt;
char *start, *end;
if (file == NULL) {
/* no file name */
return;
}
fp = fopen(file, "r");
if(fp == NULL) {
/* could not open file */
return;
}
while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
/* skip lines starting with '#' */
if(*start == '#') continue;
/* trim leading white space */
while((*start != '\0') && isspace((unsigned char) *start))
start++;
/* anything left? */
if(*start == '\0') continue;
/* trim trailing white space */
end = &start[strlen(start)-1];
while(isspace((unsigned char)*end)) end--;
end[1] = '\0';
/* anything left? */
if(*start == '\0') continue;
/* parse the command */
cmd=start;
while((*start != '\0') && !isspace((unsigned char)*start)) {
start++;
}
if(*start == '\0') {
/* command has no argument */
continue;
}
*start++ = '\0';
/* we must have some non-whitespace to skip */
while(isspace((unsigned char)*start)) start++;
opt = start;
for(i=0; attrs[i].type != ATTR_NONE; i++) {
void *p;
if(strcasecmp(cmd, attrs[i].name) != 0) {
continue;
}
switch(attrs[i].type) {
case ATTR_BOOL:
if((strcasecmp(opt, "on") == 0)
|| (strcasecmp(opt, "yes") == 0)
|| (strcasecmp(opt, "true") == 0))
{
LDAP_BOOL_SET(&gopts, attrs[i].offset);
} else {
LDAP_BOOL_CLR(&gopts, attrs[i].offset);
}
break;
case ATTR_INT:
p = &((char *) &gopts)[attrs[i].offset];
* (int*) p = atoi(opt);
break;
case ATTR_KV: {
const struct ol_keyvalue *kv;
for(kv = attrs[i].data;
kv->key != NULL;
kv++) {
if(strcasecmp(opt, kv->key) == 0) {
p = &((char *) &gopts)[attrs[i].offset];
* (int*) p = kv->value;
break;
}
}
} break;
case ATTR_STRING:
p = &((char *) &gopts)[attrs[i].offset];
if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
* (char**) p = LDAP_STRDUP(opt);
break;
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case ATTR_TLS:
#ifdef HAVE_TLS
ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
#endif
break;
}
}
}
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fclose(fp);
}
static void openldap_ldap_init_w_userconf(const char *file)
{
char *home;
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char *path;
if (file == NULL) {
/* no file name */
return;
}
home = getenv("HOME");
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if (home != NULL) {
path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
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} else {
path = LDAP_MALLOC(strlen(file) + 3);
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}
if(home != NULL && path != NULL) {
/* we assume UNIX path syntax is used... */
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/* try ~/file */
sprintf(path, "%s/%s", home, file);
openldap_ldap_init_w_conf(path);
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/* try ~/.file */
sprintf(path, "%s/.%s", home, file);
openldap_ldap_init_w_conf(path);
}
if(path != NULL) {
LDAP_FREE(path);
}
/* try file */
openldap_ldap_init_w_conf(file);
}
static void openldap_ldap_init_w_env(const char *prefix)
{
char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
int len;
int i;
void *p;
char *value;
if (prefix == NULL) {
prefix = LDAP_ENV_PREFIX;
}
strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
len = strlen(buf);
for(i=0; attrs[i].type != ATTR_NONE; i++) {
strcpy(&buf[len], attrs[i].name);
value = getenv(buf);
if(value == NULL) {
continue;
}
switch(attrs[i].type) {
case ATTR_BOOL:
if((strcasecmp(value, "on") == 0)
|| (strcasecmp(value, "yes") == 0)
|| (strcasecmp(value, "true") == 0))
{
LDAP_BOOL_SET(&gopts, attrs[i].offset);
} else {
LDAP_BOOL_CLR(&gopts, attrs[i].offset);
}
break;
case ATTR_INT:
p = &((char *) &gopts)[attrs[i].offset];
* (int*) p = atoi(value);
break;
case ATTR_KV: {
const struct ol_keyvalue *kv;
for(kv = attrs[i].data;
kv->key != NULL;
kv++) {
if(strcasecmp(value, kv->key) == 0) {
p = &((char *) &gopts)[attrs[i].offset];
* (int*) p = kv->value;
break;
}
}
} break;
case ATTR_STRING:
p = &((char *) &gopts)[attrs[i].offset];
if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
if (*value == '\0') {
* (char**) p = NULL;
} else {
* (char**) p = LDAP_STRDUP(value);
}
break;
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case ATTR_TLS:
#ifdef HAVE_TLS
ldap_pvt_tls_config( attrs[i].offset, value );
#endif
break;
}
}
}
void ldap_int_initialize( void )
{
if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
return;
}
ldap_int_utils_init();
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#ifdef HAVE_TLS
ldap_pvt_tls_init();
#endif
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if ( ldap_int_tblsize == 0 )
ldap_int_ip_init();
gopts.ldo_version = LDAP_VERSION2;
gopts.ldo_deref = LDAP_DEREF_NEVER;
gopts.ldo_timelimit = LDAP_NO_LIMIT;
gopts.ldo_sizelimit = LDAP_NO_LIMIT;
gopts.ldo_debug = 0;
gopts.ldo_defhost = LDAP_STRDUP("localhost");
gopts.ldo_defport = LDAP_PORT;
gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
LDAP_BOOL_ZERO(&gopts);
LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
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#ifdef HAVE_TLS
gopts.ldo_tls_ctx = NULL;
#endif
gopts.ldo_valid = LDAP_INITIALIZED;
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if( getenv("LDAPNOINIT") != NULL ) {
return;
}
openldap_ldap_init_w_conf(LDAP_CONF_FILE);
openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
{
char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
if( altfile != NULL ) {
openldap_ldap_init_w_conf( altfile );
}
}
{
char *altfile = getenv(LDAP_ENV_PREFIX "RC");
if( altfile != NULL ) {
openldap_ldap_init_w_userconf( altfile );
}
}
openldap_ldap_init_w_env(NULL);
}