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a9086e8a4b
curl/packages/OS400/os400sys.c
Patrick Monnerat 213939c8ba Augment RPG binding with "OLDIES" definitions. 
Fix OS400 LDAP wrappers: strings were non null-terminated.
2011-04-18 15:54:45 +02:00

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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
*
***************************************************************************/
/* OS/400 additional support. */
#include "curlbuild.h"
#include "config-os400.h" /* Not setup.h: we only need some defines. */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <pthread.h>
#include <netdb.h>
#include <qadrt.h>
#include <errno.h>
#ifdef USE_QSOSSL
#include <qsossl.h>
#endif
#ifdef HAVE_GSSAPI
#include <gssapi.h>
#endif
#ifndef CURL_DISABLE_LDAP
#include <ldap.h>
#endif
#include <netinet/in.h>
#include <arpa/inet.h>
#include "os400sys.h"
/**
*** QADRT OS/400 ASCII runtime defines only the most used procedures, but
*** but a lot of them are not supported. This module implements
*** ASCII wrappers for those that are used by libcurl, but not
*** defined by QADRT.
**/
#pragma convert(0) /* Restore EBCDIC. */
#define MIN_BYTE_GAIN 1024 /* Minimum gain when shortening a buffer. */
typedef struct {
unsigned long size; /* Buffer size. */
char * buf; /* Buffer address. */
} buffer_t;
static char * buffer_undef(localkey_t key, long size);
static char * buffer_threaded(localkey_t key, long size);
static char * buffer_unthreaded(localkey_t key, long size);
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_key_t thdkey;
static buffer_t * locbufs;
char * (* Curl_thread_buffer)(localkey_t key, long size) = buffer_undef;
static void
thdbufdestroy(void * private)
{
localkey_t i;
buffer_t * p;
if (private) {
p = (buffer_t *) private;
for (i = (localkey_t) 0; i < LK_LAST; i++) {
if (p->buf)
free(p->buf);
p++;
}
free(private);
}
}
static void
terminate(void)
{
if (Curl_thread_buffer == buffer_threaded) {
locbufs = pthread_getspecific(thdkey);
pthread_setspecific(thdkey, (void *) NULL);
pthread_key_delete(thdkey);
}
if (Curl_thread_buffer != buffer_undef) {
thdbufdestroy((void *) locbufs);
locbufs = (buffer_t *) NULL;
}
Curl_thread_buffer = buffer_undef;
}
static char *
get_buffer(buffer_t * buf, long size)
{
char * cp;
/* If `size' >= 0, make sure buffer at `buf' is at least `size'-byte long.
Return the buffer address. */
if (size < 0)
return buf->buf;
if (!buf->buf) {
if ((buf->buf = malloc(size)))
buf->size = size;
return buf->buf;
}
if ((unsigned long) size <= buf->size) {
/* Shorten the buffer only if it frees a significant byte count. This
avoids some realloc() overhead. */
if (buf->size - size < MIN_BYTE_GAIN)
return buf->buf;
}
/* Resize the buffer. */
if ((cp = realloc(buf->buf, size))) {
buf->buf = cp;
buf->size = size;
}
else if (size <= buf->size)
cp = buf->buf;
return cp;
}
static char *
buffer_unthreaded(localkey_t key, long size)
{
return get_buffer(locbufs + key, size);
}
static char *
buffer_threaded(localkey_t key, long size)
{
buffer_t * bufs;
/* Get the buffer for the given local key in the current thread, and
make sure it is at least `size'-byte long. Set `size' to < 0 to get
its address only. */
bufs = (buffer_t *) pthread_getspecific(thdkey);
if (!bufs) {
if (size < 0)
return (char *) NULL; /* No buffer yet. */
/* Allocate buffer descriptors for the current thread. */
if (!(bufs = calloc((size_t) LK_LAST, sizeof *bufs)))
return (char *) NULL;
if (pthread_setspecific(thdkey, (void *) bufs)) {
free(bufs);
return (char *) NULL;
}
}
return get_buffer(bufs + key, size);
}
static char *
buffer_undef(localkey_t key, long size)
{
/* Define the buffer system, get the buffer for the given local key in
the current thread, and make sure it is at least `size'-byte long.
Set `size' to < 0 to get its address only. */
pthread_mutex_lock(&mutex);
/* Determine if we can use pthread-specific data. */
if (Curl_thread_buffer == buffer_undef) { /* If unchanged during lock. */
if (!pthread_key_create(&thdkey, thdbufdestroy))
Curl_thread_buffer = buffer_threaded;
else if (!(locbufs = calloc((size_t) LK_LAST,
sizeof *locbufs))) {
pthread_mutex_unlock(&mutex);
return (char *) NULL;
}
else
Curl_thread_buffer = buffer_unthreaded;
atexit(terminate);
}
pthread_mutex_unlock(&mutex);
return Curl_thread_buffer(key, size);
}
int
Curl_getnameinfo_a(const struct sockaddr * sa, curl_socklen_t salen,
char * nodename, curl_socklen_t nodenamelen,
char * servname, curl_socklen_t servnamelen,
int flags)
{
char * enodename;
char * eservname;
int status;
int i;
enodename = (char *) NULL;
eservname = (char *) NULL;
if (nodename && nodenamelen)
if (!(enodename = malloc(nodenamelen)))
return EAI_MEMORY;
if (servname && servnamelen)
if (!(eservname = malloc(servnamelen))) {
if (enodename)
free(enodename);
return EAI_MEMORY;
}
status = getnameinfo(sa, salen, enodename, nodenamelen,
eservname, servnamelen, flags);
if (!status) {
if (enodename) {
i = QadrtConvertE2A(nodename, enodename,
nodenamelen - 1, strlen(enodename));
nodename[i] = '\0';
}
if (eservname) {
i = QadrtConvertE2A(servname, eservname,
servnamelen - 1, strlen(eservname));
servname[i] = '\0';
}
}
if (enodename)
free(enodename);
if (eservname)
free(eservname);
return status;
}
int
Curl_getaddrinfo_a(const char * nodename, const char * servname,
const struct addrinfo * hints,
struct addrinfo * * res)
{
char * enodename;
char * eservname;
int status;
int i;
enodename = (char *) NULL;
eservname = (char *) NULL;
if (nodename) {
i = strlen(nodename);
if (!(enodename = malloc(i + 1)))
return EAI_MEMORY;
i = QadrtConvertA2E(enodename, nodename, i, i);
enodename[i] = '\0';
}
if (servname) {
i = strlen(servname);
if (!(eservname = malloc(i + 1))) {
if (enodename)
free(enodename);
return EAI_MEMORY;
}
QadrtConvertA2E(eservname, servname, i, i);
eservname[i] = '\0';
}
status = getaddrinfo(enodename, eservname, hints, res);
if (enodename)
free(enodename);
if (eservname)
free(eservname);
return status;
}
#ifdef USE_QSOSSL
/* ASCII wrappers for the SSL procedures. */
int
Curl_SSL_Init_Application_a(SSLInitApp * init_app)
{
int rc;
unsigned int i;
SSLInitApp ia;
if (!init_app || !init_app->applicationID || !init_app->applicationIDLen)
return SSL_Init_Application(init_app);
memcpy((char *) &ia, (char *) init_app, sizeof ia);
i = ia.applicationIDLen;
if (!(ia.applicationID = malloc(i + 1))) {
errno = ENOMEM;
return SSL_ERROR_IO;
}
QadrtConvertA2E(ia.applicationID, init_app->applicationID, i, i);
ia.applicationID[i] = '\0';
rc = SSL_Init_Application(&ia);
free(ia.applicationID);
init_app->localCertificateLen = ia.localCertificateLen;
init_app->sessionType = ia.sessionType;
return rc;
}
int
Curl_SSL_Init_a(SSLInit * init)
{
int rc;
unsigned int i;
SSLInit ia;
if (!init || (!init->keyringFileName && !init->keyringPassword))
return SSL_Init(init);
memcpy((char *) &ia, (char *) init, sizeof ia);
if (ia.keyringFileName) {
i = strlen(ia.keyringFileName);
if (!(ia.keyringFileName = malloc(i + 1))) {
errno = ENOMEM;
return SSL_ERROR_IO;
}
QadrtConvertA2E(ia.keyringFileName, init->keyringFileName, i, i);
ia.keyringFileName[i] = '\0';
}
if (ia.keyringPassword) {
i = strlen(ia.keyringPassword);
if (!(ia.keyringPassword = malloc(i + 1))) {
if (ia.keyringFileName)
free(ia.keyringFileName);
errno = ENOMEM;
return SSL_ERROR_IO;
}
QadrtConvertA2E(ia.keyringPassword, init->keyringPassword, i, i);
ia.keyringPassword[i] = '\0';
}
rc = SSL_Init(&ia);
if (ia.keyringFileName)
free(ia.keyringFileName);
if (ia.keyringPassword)
free(ia.keyringPassword);
return rc;
}
char *
Curl_SSL_Strerror_a(int sslreturnvalue, SSLErrorMsg * serrmsgp)
{
int i;
char * cp;
char * cp2;
cp = SSL_Strerror(sslreturnvalue, serrmsgp);
if (!cp)
return cp;
i = strlen(cp);
if (!(cp2 = Curl_thread_buffer(LK_SSL_ERROR, MAX_CONV_EXPANSION * i + 1)))
return cp2;
i = QadrtConvertE2A(cp2, cp, MAX_CONV_EXPANSION * i, i);
cp2[i] = '\0';
return cp2;
}
#endif /* USE_QSOSSL */
#ifdef HAVE_GSSAPI
/* ASCII wrappers for the GSSAPI procedures. */
static int
Curl_gss_convert_in_place(OM_uint32 * minor_status, gss_buffer_t buf)
{
unsigned int i;
char * t;
/* Convert `buf' in place, from EBCDIC to ASCII.
If error, release the buffer and return -1. Else return 0. */
i = buf->length;
if (i) {
if (!(t = malloc(i))) {
gss_release_buffer(minor_status, buf);
if (minor_status)
*minor_status = ENOMEM;
return -1;
}
QadrtConvertE2A(t, buf->value, i, i);
memcpy(buf->value, t, i);
free(t);
}
return 0;
}
OM_uint32
Curl_gss_import_name_a(OM_uint32 * minor_status, gss_buffer_t in_name,
gss_OID in_name_type, gss_name_t * out_name)
{
int rc;
unsigned int i;
gss_buffer_desc in;
if (!in_name || !in_name->value || !in_name->length)
return gss_import_name(minor_status, in_name, in_name_type, out_name);
memcpy((char *) &in, (char *) in_name, sizeof in);
i = in.length;
if (!(in.value = malloc(i + 1))) {
if (minor_status)
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
QadrtConvertA2E(in.value, in_name->value, i, i);
((char *) in.value)[i] = '\0';
rc = gss_import_name(minor_status, &in, in_name_type, out_name);
free(in.value);
return rc;
}
OM_uint32
Curl_gss_display_status_a(OM_uint32 * minor_status, OM_uint32 status_value,
int status_type, gss_OID mech_type,
gss_msg_ctx_t * message_context, gss_buffer_t status_string)
{
int rc;
rc = gss_display_status(minor_status, status_value, status_type,
mech_type, message_context, status_string);
if (rc != GSS_S_COMPLETE || !status_string ||
!status_string->length || !status_string->value)
return rc;
/* No way to allocate a buffer here, because it will be released by
gss_release_buffer(). The solution is to overwrite the EBCDIC buffer
with ASCII to return it. */
if (Curl_gss_convert_in_place(minor_status, status_string))
return GSS_S_FAILURE;
return rc;
}
OM_uint32
Curl_gss_init_sec_context_a(OM_uint32 * minor_status, gss_cred_id_t cred_handle,
gss_ctx_id_t * context_handle,
gss_name_t target_name, gss_OID mech_type,
gss_flags_t req_flags, OM_uint32 time_req,
gss_channel_bindings_t input_chan_bindings,
gss_buffer_t input_token,
gss_OID * actual_mech_type,
gss_buffer_t output_token, gss_flags_t * ret_flags,
OM_uint32 * time_rec)
{
int rc;
unsigned int i;
gss_buffer_desc in;
gss_buffer_t inp;
in.value = NULL;
if ((inp = input_token))
if (inp->length && inp->value) {
i = inp->length;
if (!(in.value = malloc(i + 1))) {
if (minor_status)
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
QadrtConvertA2E(in.value, input_token->value, i, i);
((char *) in.value)[i] = '\0';
in.length = i;
inp = &in;
}
rc = gss_init_sec_context(minor_status, cred_handle, context_handle,
target_name, mech_type, req_flags, time_req,
input_chan_bindings, inp, actual_mech_type,
output_token, ret_flags, time_rec);
if (in.value)
free(in.value);
if (rc != GSS_S_COMPLETE || !output_token ||
!output_token->length || !output_token->value)
return rc;
/* No way to allocate a buffer here, because it will be released by
gss_release_buffer(). The solution is to overwrite the EBCDIC buffer
with ASCII to return it. */
if (Curl_gss_convert_in_place(minor_status, output_token))
return GSS_S_FAILURE;
return rc;
}
OM_uint32
Curl_gss_delete_sec_context_a(OM_uint32 * minor_status,
gss_ctx_id_t * context_handle,
gss_buffer_t output_token)
{
int rc;
rc = gss_delete_sec_context(minor_status, context_handle, output_token);
if (rc != GSS_S_COMPLETE || !output_token ||
!output_token->length || !output_token->value)
return rc;
/* No way to allocate a buffer here, because it will be released by
gss_release_buffer(). The solution is to overwrite the EBCDIC buffer
with ASCII to return it. */
if (Curl_gss_convert_in_place(minor_status, output_token))
return GSS_S_FAILURE;
return rc;
}
#endif /* HAVE_GSSAPI */
#ifndef CURL_DISABLE_LDAP
/* ASCII wrappers for the LDAP procedures. */
void *
Curl_ldap_init_a(char * host, int port)
{
unsigned int i;
char * ehost;
void * result;
if (!host)
return (void *) ldap_init(host, port);
i = strlen(host);
if (!(ehost = malloc(i + 1)))
return (void *) NULL;
QadrtConvertA2E(ehost, host, i, i);
ehost[i] = '\0';
result = (void *) ldap_init(ehost, port);
free(ehost);
return result;
}
int
Curl_ldap_simple_bind_s_a(void * ld, char * dn, char * passwd)
{
int i;
char * edn;
char * epasswd;
edn = (char *) NULL;
epasswd = (char *) NULL;
if (dn) {
i = strlen(dn);
if (!(edn = malloc(i + 1)))
return LDAP_NO_MEMORY;
QadrtConvertA2E(edn, dn, i, i);
edn[i] = '\0';
}
if (passwd) {
i = strlen(passwd);
if (!(epasswd = malloc(i + 1))) {
if (edn)
free(edn);
return LDAP_NO_MEMORY;
}
QadrtConvertA2E(epasswd, passwd, i, i);
epasswd[i] = '\0';
}
i = ldap_simple_bind_s(ld, edn, epasswd);
if (epasswd)
free(epasswd);
if (edn)
free(edn);
return i;
}
int
Curl_ldap_search_s_a(void * ld, char * base, int scope, char * filter,
char * * attrs, int attrsonly, LDAPMessage * * res)
{
int i;
int j;
char * ebase;
char * efilter;
char * * eattrs;
int status;
ebase = (char *) NULL;
efilter = (char *) NULL;
eattrs = (char * *) NULL;
status = LDAP_SUCCESS;
if (base) {
i = strlen(base);
if (!(ebase = malloc(i + 1)))
status = LDAP_NO_MEMORY;
else {
QadrtConvertA2E(ebase, base, i, i);
ebase[i] = '\0';
}
}
if (filter && status == LDAP_SUCCESS) {
i = strlen(filter);
if (!(efilter = malloc(i + 1)))
status = LDAP_NO_MEMORY;
else {
QadrtConvertA2E(efilter, filter, i, i);
efilter[i] = '\0';
}
}
if (attrs && status == LDAP_SUCCESS) {
for (i = 0; attrs[i++];)
;
if (!(eattrs = calloc(i, sizeof *eattrs)))
status = LDAP_NO_MEMORY;
else {
for (j = 0; attrs[j]; j++) {
i = strlen(attrs[j]);
if (!(eattrs[j] = malloc(i + 1))) {
status = LDAP_NO_MEMORY;
break;
}
QadrtConvertA2E(eattrs[j], attrs[j], i, i);
eattrs[j][i] = '\0';
}
}
}
if (status == LDAP_SUCCESS)
status = ldap_search_s(ld, ebase? ebase: "", scope,
efilter? efilter: "(objectclass=*)",
eattrs, attrsonly, res);
if (eattrs) {
for (j = 0; eattrs[j]; j++)
free(eattrs[j]);
free(eattrs);
}
if (efilter)
free(efilter);
if (ebase)
free(ebase);
return status;
}
struct berval * *
Curl_ldap_get_values_len_a(void * ld, LDAPMessage * entry, const char * attr)
{
int i;
char * cp;
struct berval * * result;
cp = (char *) NULL;
if (attr) {
i = strlen(attr);
if (!(cp = malloc(i + 1))) {
ldap_set_lderrno(ld, LDAP_NO_MEMORY, NULL,
ldap_err2string(LDAP_NO_MEMORY));
return (struct berval * *) NULL;
}
QadrtConvertA2E(cp, attr, i, i);
cp[i] = '\0';
}
result = ldap_get_values_len(ld, entry, cp);
if (cp)
free(cp);
/* Result data are binary in nature, so they haven't been converted to EBCDIC.
Therefore do not convert. */
return result;
}
char *
Curl_ldap_err2string_a(int error)
{
int i;
char * cp;
char * cp2;
cp = ldap_err2string(error);
if (!cp)
return cp;
i = strlen(cp);
if (!(cp2 = Curl_thread_buffer(LK_LDAP_ERROR, MAX_CONV_EXPANSION * i + 1)))
return cp2;
i = QadrtConvertE2A(cp2, cp, MAX_CONV_EXPANSION * i, i);
cp2[i] = '\0';
return cp2;
}
char *
Curl_ldap_get_dn_a(void * ld, LDAPMessage * entry)
{
int i;
char * cp;
char * cp2;
cp = ldap_get_dn(ld, entry);
if (!cp)
return cp;
i = strlen(cp);
if (!(cp2 = malloc(i + 1)))
return cp2;
QadrtConvertE2A(cp2, cp, i, i);
cp2[i] = '\0';
/* No way to allocate a buffer here, because it will be released by
ldap_memfree() and ldap_memalloc() does not exist. The solution is to
overwrite the EBCDIC buffer with ASCII to return it. */
strcpy(cp, cp2);
free(cp2);
return cp;
}
char *
Curl_ldap_first_attribute_a(void * ld,
LDAPMessage * entry, BerElement * * berptr)
{
int i;
char * cp;
char * cp2;
cp = ldap_first_attribute(ld, entry, berptr);
if (!cp)
return cp;
i = strlen(cp);
if (!(cp2 = malloc(i + 1)))
return cp2;
QadrtConvertE2A(cp2, cp, i, i);
cp2[i] = '\0';
/* No way to allocate a buffer here, because it will be released by
ldap_memfree() and ldap_memalloc() does not exist. The solution is to
overwrite the EBCDIC buffer with ASCII to return it. */
strcpy(cp, cp2);
free(cp2);
return cp;
}
char *
Curl_ldap_next_attribute_a(void * ld,
LDAPMessage * entry, BerElement * berptr)
{
int i;
char * cp;
char * cp2;
cp = ldap_next_attribute(ld, entry, berptr);
if (!cp)
return cp;
i = strlen(cp);
if (!(cp2 = malloc(i + 1)))
return cp2;
QadrtConvertE2A(cp2, cp, i, i);
cp2[i] = '\0';
/* No way to allocate a buffer here, because it will be released by
ldap_memfree() and ldap_memalloc() does not exist. The solution is to
overwrite the EBCDIC buffer with ASCII to return it. */
strcpy(cp, cp2);
free(cp2);
return cp;
}
#endif /* CURL_DISABLE_LDAP */
static int
convert_sockaddr(struct sockaddr_storage * dstaddr,
const struct sockaddr * srcaddr, int srclen)
{
const struct sockaddr_un * srcu;
struct sockaddr_un * dstu;
unsigned int i;
unsigned int dstsize;
/* Convert a socket address into job CCSID, if needed. */
if (!srcaddr || srclen < offsetof(struct sockaddr, sa_family) +
sizeof srcaddr->sa_family || srclen > sizeof *dstaddr) {
errno = EINVAL;
return -1;
}
memcpy((char *) dstaddr, (char *) srcaddr, srclen);
switch (srcaddr->sa_family) {
case AF_UNIX:
srcu = (const struct sockaddr_un *) srcaddr;
dstu = (struct sockaddr_un *) dstaddr;
dstsize = sizeof *dstaddr - offsetof(struct sockaddr_un, sun_path);
srclen -= offsetof(struct sockaddr_un, sun_path);
i = QadrtConvertA2E(dstu->sun_path, srcu->sun_path, dstsize - 1, srclen);
dstu->sun_path[i] = '\0';
i += offsetof(struct sockaddr_un, sun_path);
srclen = i;
}
return srclen;
}
int
Curl_os400_connect(int sd, struct sockaddr * destaddr, int addrlen)
{
int i;
struct sockaddr_storage laddr;
i = convert_sockaddr(&laddr, destaddr, addrlen);
if (i < 0)
return -1;
return connect(sd, (struct sockaddr *) &laddr, i);
}
int
Curl_os400_bind(int sd, struct sockaddr * localaddr, int addrlen)
{
int i;
struct sockaddr_storage laddr;
i = convert_sockaddr(&laddr, localaddr, addrlen);
if (i < 0)
return -1;
return bind(sd, (struct sockaddr *) &laddr, i);
}
int
Curl_os400_sendto(int sd, char * buffer, int buflen, int flags,
struct sockaddr * dstaddr, int addrlen)
{
int i;
struct sockaddr_storage laddr;
i = convert_sockaddr(&laddr, dstaddr, addrlen);
if (i < 0)
return -1;
return sendto(sd, buffer, buflen, flags, (struct sockaddr *) &laddr, i);
}
int
Curl_os400_recvfrom(int sd, char * buffer, int buflen, int flags,
struct sockaddr * fromaddr, int * addrlen)
{
int i;
int rcvlen;
int laddrlen;
const struct sockaddr_un * srcu;
struct sockaddr_un * dstu;
struct sockaddr_storage laddr;
if (!fromaddr || !addrlen || *addrlen <= 0)
return recvfrom(sd, buffer, buflen, flags, fromaddr, addrlen);
laddrlen = sizeof laddr;
laddr.ss_family = AF_UNSPEC; /* To detect if unused. */
rcvlen = recvfrom(sd, buffer, buflen, flags,
(struct sockaddr *) &laddr, &laddrlen);
if (rcvlen < 0)
return rcvlen;
switch (laddr.ss_family) {
case AF_UNIX:
srcu = (const struct sockaddr_un *) &laddr;
dstu = (struct sockaddr_un *) fromaddr;
i = *addrlen - offsetof(struct sockaddr_un, sun_path);
laddrlen -= offsetof(struct sockaddr_un, sun_path);
i = QadrtConvertE2A(dstu->sun_path, srcu->sun_path, i, laddrlen);
laddrlen = i + offsetof(struct sockaddr_un, sun_path);
if (laddrlen < *addrlen)
dstu->sun_path[i] = '\0';
break;
case AF_UNSPEC:
break;
default:
if (laddrlen > *addrlen)
laddrlen = *addrlen;
if (laddrlen)
memcpy((char *) fromaddr, (char *) &laddr, laddrlen);
break;
}
*addrlen = laddrlen;
return rcvlen;
}
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