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/*
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* TLS support code for CUPS on macOS.
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*
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* Copyright © 2007-2019 by Apple Inc.
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* Copyright © 1997-2007 by Easy Software Products, all rights reserved.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more
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* information.
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*/
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/**** This file is included from tls.c ****/
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/*
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* Include necessary headers...
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*/
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#include <spawn.h>
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#include "tls-darwin.h"
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/*
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* Constants, very secure stuff...
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*/
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#define _CUPS_CDSA_PASSWORD "42" /* CUPS keychain password */
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#define _CUPS_CDSA_PASSLEN 2 /* Length of keychain password */
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/*
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* Local globals...
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*/
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static int tls_auto_create = 0;
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/* Auto-create self-signed certs? */
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static char *tls_common_name = NULL;
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/* Default common name */
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#if TARGET_OS_OSX
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static int tls_cups_keychain = 0;
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/* Opened the CUPS keychain? */
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static SecKeychainRef tls_keychain = NULL;
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/* Server cert keychain */
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#else
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static SecIdentityRef tls_selfsigned = NULL;
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/* Temporary self-signed cert */
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#endif /* TARGET_OS_OSX */
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static char *tls_keypath = NULL;
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/* Server cert keychain path */
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static _cups_mutex_t tls_mutex = _CUPS_MUTEX_INITIALIZER;
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/* Mutex for keychain/certs */
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static int tls_options = -1,/* Options for TLS connections */
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tls_min_version = _HTTP_TLS_1_0,
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tls_max_version = _HTTP_TLS_MAX;
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/*
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* Local functions...
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*/
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static CFArrayRef http_cdsa_copy_server(const char *common_name);
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static SecCertificateRef http_cdsa_create_credential(http_credential_t *credential);
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#if TARGET_OS_OSX
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static const char *http_cdsa_default_path(char *buffer, size_t bufsize);
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static SecKeychainRef http_cdsa_open_keychain(const char *path, char *filename, size_t filesize);
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static SecKeychainRef http_cdsa_open_system_keychain(void);
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#endif /* TARGET_OS_OSX */
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static OSStatus http_cdsa_read(SSLConnectionRef connection, void *data, size_t *dataLength);
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static int http_cdsa_set_credentials(http_t *http);
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static OSStatus http_cdsa_write(SSLConnectionRef connection, const void *data, size_t *dataLength);
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/*
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* 'cupsMakeServerCredentials()' - Make a self-signed certificate and private key pair.
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*
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* @since CUPS 2.0/OS 10.10@
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*/
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int /* O - 1 on success, 0 on failure */
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cupsMakeServerCredentials(
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const char *path, /* I - Keychain path or @code NULL@ for default */
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const char *common_name, /* I - Common name */
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int num_alt_names, /* I - Number of subject alternate names */
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const char **alt_names, /* I - Subject Alternate Names */
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time_t expiration_date) /* I - Expiration date */
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{
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#if TARGET_OS_OSX
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int pid, /* Process ID of command */
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status, /* Status of command */
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i; /* Looping var */
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char command[1024], /* Command */
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*argv[5], /* Command-line arguments */
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*envp[1000], /* Environment variables */
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days[32], /* CERTTOOL_EXPIRATION_DAYS env var */
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keychain[1024], /* Keychain argument */
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infofile[1024], /* Type-in information for cert */
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filename[1024]; /* Default keychain path */
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cups_file_t *fp; /* Seed/info file */
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DEBUG_printf(("cupsMakeServerCredentials(path=\"%s\", common_name=\"%s\", num_alt_names=%d, alt_names=%p, expiration_date=%d)", path, common_name, num_alt_names, (void *)alt_names, (int)expiration_date));
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(void)num_alt_names;
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(void)alt_names;
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if (!path)
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path = http_cdsa_default_path(filename, sizeof(filename));
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/*
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* Run the "certtool" command to generate a self-signed certificate...
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*/
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if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
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return (-1);
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/*
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* Create a file with the certificate information fields...
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*
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* Note: This assumes that the default questions are asked by the certtool
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* command...
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*/
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if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
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return (-1);
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cupsFilePrintf(fp,
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"CUPS Self-Signed Certificate\n"
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/* Enter key and certificate label */
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"r\n" /* Generate RSA key pair */
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"2048\n" /* 2048 bit encryption key */
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"y\n" /* OK (y = yes) */
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"b\n" /* Usage (b=signing/encryption) */
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"2\n" /* Sign with SHA256 */
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"y\n" /* OK (y = yes) */
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"%s\n" /* Common name */
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"\n" /* Country (default) */
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"\n" /* Organization (default) */
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"\n" /* Organizational unit (default) */
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"\n" /* State/Province (default) */
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"\n" /* Email address */
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"y\n", /* OK (y = yes) */
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common_name);
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cupsFileClose(fp);
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snprintf(keychain, sizeof(keychain), "k=%s", path);
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argv[0] = "certtool";
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argv[1] = "c";
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argv[2] = keychain;
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argv[3] = NULL;
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snprintf(days, sizeof(days), "CERTTOOL_EXPIRATION_DAYS=%d", (int)((expiration_date - time(NULL) + 86399) / 86400));
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envp[0] = days;
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for (i = 0; i < (int)(sizeof(envp) / sizeof(envp[0]) - 2) && environ[i]; i ++)
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envp[i + 1] = environ[i];
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envp[i] = NULL;
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posix_spawn_file_actions_t actions; /* File actions */
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posix_spawn_file_actions_init(&actions);
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posix_spawn_file_actions_addclose(&actions, 0);
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posix_spawn_file_actions_addopen(&actions, 0, infofile, O_RDONLY, 0);
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posix_spawn_file_actions_addclose(&actions, 1);
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posix_spawn_file_actions_addopen(&actions, 1, "/dev/null", O_WRONLY, 0);
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posix_spawn_file_actions_addclose(&actions, 2);
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posix_spawn_file_actions_addopen(&actions, 2, "/dev/null", O_WRONLY, 0);
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if (posix_spawn(&pid, command, &actions, NULL, argv, envp))
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{
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unlink(infofile);
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return (-1);
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}
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posix_spawn_file_actions_destroy(&actions);
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unlink(infofile);
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while (waitpid(pid, &status, 0) < 0)
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if (errno != EINTR)
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{
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status = -1;
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break;
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}
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return (!status);
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#else
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int status = 0; /* Return status */
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OSStatus err; /* Error code (if any) */
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CFStringRef cfcommon_name = NULL;
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/* CF string for server name */
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SecIdentityRef ident = NULL; /* Identity */
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SecKeyRef publicKey = NULL,
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/* Public key */
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privateKey = NULL;
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/* Private key */
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SecCertificateRef cert = NULL; /* Self-signed certificate */
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CFMutableDictionaryRef keyParams = NULL;
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/* Key generation parameters */
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DEBUG_printf(("cupsMakeServerCredentials(path=\"%s\", common_name=\"%s\", num_alt_names=%d, alt_names=%p, expiration_date=%d)", path, common_name, num_alt_names, alt_names, (int)expiration_date));
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(void)path;
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(void)num_alt_names;
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(void)alt_names;
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(void)expiration_date;
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if (path)
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{
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DEBUG_puts("1cupsMakeServerCredentials: No keychain support compiled in, returning 0.");
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return (0);
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}
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if (tls_selfsigned)
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{
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DEBUG_puts("1cupsMakeServerCredentials: Using existing self-signed cert.");
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|
return (1);
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|
}
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|
cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8);
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|
if (!cfcommon_name)
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|
{
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|
DEBUG_puts("1cupsMakeServerCredentials: Unable to create CF string of common name.");
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|
goto cleanup;
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|
}
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/*
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|
* Create a public/private key pair...
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|
*/
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keyParams = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
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|
if (!keyParams)
|
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|
{
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|
DEBUG_puts("1cupsMakeServerCredentials: Unable to create key parameters dictionary.");
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|
|
goto cleanup;
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|
|
}
|
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|
|
CFDictionaryAddValue(keyParams, kSecAttrKeyType, kSecAttrKeyTypeRSA);
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|
|
CFDictionaryAddValue(keyParams, kSecAttrKeySizeInBits, CFSTR("2048"));
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CFDictionaryAddValue(keyParams, kSecAttrLabel, cfcommon_name);
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err = SecKeyGeneratePair(keyParams, &publicKey, &privateKey);
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if (err != noErr)
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|
{
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|
DEBUG_printf(("1cupsMakeServerCredentials: Unable to generate key pair: %d.", (int)err));
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|
goto cleanup;
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|
}
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|
|
/*
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|
|
* Create a self-signed certificate using the public/private key pair...
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|
*/
|
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|
|
CFIndex usageInt = kSecKeyUsageAll;
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|
CFNumberRef usage = CFNumberCreate(kCFAllocatorDefault, kCFNumberCFIndexType, &usageInt);
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|
CFIndex lenInt = 0;
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|
CFNumberRef len = CFNumberCreate(kCFAllocatorDefault, kCFNumberCFIndexType, &lenInt);
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|
CFTypeRef certKeys[] = { kSecCSRBasicContraintsPathLen, kSecSubjectAltName, kSecCertificateKeyUsage };
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|
CFTypeRef certValues[] = { len, cfcommon_name, usage };
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|
CFDictionaryRef certParams = CFDictionaryCreate(kCFAllocatorDefault, certKeys, certValues, sizeof(certKeys) / sizeof(certKeys[0]), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
|
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|
CFRelease(usage);
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CFRelease(len);
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const void *ca_o[] = { kSecOidOrganization, CFSTR("") };
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|
const void *ca_cn[] = { kSecOidCommonName, cfcommon_name };
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|
|
CFArrayRef ca_o_dn = CFArrayCreate(kCFAllocatorDefault, ca_o, 2, NULL);
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|
CFArrayRef ca_cn_dn = CFArrayCreate(kCFAllocatorDefault, ca_cn, 2, NULL);
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|
const void *ca_dn_array[2];
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|
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|
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ca_dn_array[0] = CFArrayCreate(kCFAllocatorDefault, (const void **)&ca_o_dn, 1, NULL);
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|
ca_dn_array[1] = CFArrayCreate(kCFAllocatorDefault, (const void **)&ca_cn_dn, 1, NULL);
|
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|
|
|
CFArrayRef subject = CFArrayCreate(kCFAllocatorDefault, ca_dn_array, 2, NULL);
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cert = SecGenerateSelfSignedCertificate(subject, certParams, publicKey, privateKey);
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|
|
|
CFRelease(subject);
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|
CFRelease(certParams);
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|
|
|
if (!cert)
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{
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|
DEBUG_puts("1cupsMakeServerCredentials: Unable to create self-signed certificate.");
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|
goto cleanup;
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|
}
|
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ident = SecIdentityCreate(kCFAllocatorDefault, cert, privateKey);
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if (ident)
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{
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_cupsMutexLock(&tls_mutex);
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if (tls_selfsigned)
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CFRelease(ident);
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else
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tls_selfsigned = ident;
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|
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_cupsMutexLock(&tls_mutex);
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|
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|
# if 0 /* Someday perhaps SecItemCopyMatching will work for identities, at which point */
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|
CFTypeRef itemKeys[] = { kSecClass, kSecAttrLabel, kSecValueRef };
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|
CFTypeRef itemValues[] = { kSecClassIdentity, cfcommon_name, ident };
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CFDictionaryRef itemAttrs = CFDictionaryCreate(kCFAllocatorDefault, itemKeys, itemValues, sizeof(itemKeys) / sizeof(itemKeys[0]), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
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err = SecItemAdd(itemAttrs, NULL);
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/* SecItemAdd consumes itemAttrs... */
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|
|
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CFRelease(ident);
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|
|
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if (err != noErr)
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{
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|
|
DEBUG_printf(("1cupsMakeServerCredentials: Unable to add identity to keychain: %d.", (int)err));
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|
goto cleanup;
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|
|
}
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# endif /* 0 */
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|
|
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status = 1;
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|
}
|
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|
else
|
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|
DEBUG_puts("1cupsMakeServerCredentials: Unable to create identity from cert and keys.");
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|
|
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/*
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|
* Cleanup and return...
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|
*/
|
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cleanup:
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|
|
|
if (cfcommon_name)
|
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|
CFRelease(cfcommon_name);
|
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|
|
|
|
if (keyParams)
|
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|
CFRelease(keyParams);
|
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|
|
|
|
if (cert)
|
|
|
CFRelease(cert);
|
|
|
|
|
|
if (publicKey)
|
|
|
CFRelease(publicKey);
|
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|
|
|
|
if (privateKey)
|
|
|
CFRelease(privateKey);
|
|
|
|
|
|
DEBUG_printf(("1cupsMakeServerCredentials: Returning %d.", status));
|
|
|
|
|
|
return (status);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsSetServerCredentials()' - Set the default server credentials.
|
|
|
*
|
|
|
* Note: The server credentials are used by all threads in the running process.
|
|
|
* This function is threadsafe.
|
|
|
*
|
|
|
* @since CUPS 2.0/macOS 10.10@
|
|
|
*/
|
|
|
|
|
|
int /* O - 1 on success, 0 on failure */
|
|
|
cupsSetServerCredentials(
|
|
|
const char *path, /* I - Keychain path or @code NULL@ for default */
|
|
|
const char *common_name, /* I - Default common name for server */
|
|
|
int auto_create) /* I - 1 = automatically create self-signed certificates */
|
|
|
{
|
|
|
DEBUG_printf(("cupsSetServerCredentials(path=\"%s\", common_name=\"%s\", auto_create=%d)", path, common_name, auto_create));
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
char filename[1024]; /* Keychain filename */
|
|
|
SecKeychainRef keychain = http_cdsa_open_keychain(path, filename, sizeof(filename));
|
|
|
|
|
|
if (!keychain)
|
|
|
{
|
|
|
DEBUG_puts("1cupsSetServerCredentials: Unable to open keychain.");
|
|
|
return (0);
|
|
|
}
|
|
|
|
|
|
_cupsMutexLock(&tls_mutex);
|
|
|
|
|
|
/*
|
|
|
* Close any keychain that is currently open...
|
|
|
*/
|
|
|
|
|
|
if (tls_keychain)
|
|
|
CFRelease(tls_keychain);
|
|
|
|
|
|
if (tls_keypath)
|
|
|
_cupsStrFree(tls_keypath);
|
|
|
|
|
|
if (tls_common_name)
|
|
|
_cupsStrFree(tls_common_name);
|
|
|
|
|
|
/*
|
|
|
* Save the new keychain...
|
|
|
*/
|
|
|
|
|
|
tls_keychain = keychain;
|
|
|
tls_keypath = _cupsStrAlloc(filename);
|
|
|
tls_auto_create = auto_create;
|
|
|
tls_common_name = _cupsStrAlloc(common_name);
|
|
|
|
|
|
_cupsMutexUnlock(&tls_mutex);
|
|
|
|
|
|
DEBUG_puts("1cupsSetServerCredentials: Opened keychain, returning 1.");
|
|
|
return (1);
|
|
|
|
|
|
#else
|
|
|
if (path)
|
|
|
{
|
|
|
DEBUG_puts("1cupsSetServerCredentials: No keychain support compiled in, returning 0.");
|
|
|
return (0);
|
|
|
}
|
|
|
|
|
|
tls_auto_create = auto_create;
|
|
|
tls_common_name = _cupsStrAlloc(common_name);
|
|
|
|
|
|
return (1);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpCopyCredentials()' - Copy the credentials associated with the peer in
|
|
|
* an encrypted connection.
|
|
|
*
|
|
|
* @since CUPS 1.5/macOS 10.7@
|
|
|
*/
|
|
|
|
|
|
int /* O - Status of call (0 = success) */
|
|
|
httpCopyCredentials(
|
|
|
http_t *http, /* I - Connection to server */
|
|
|
cups_array_t **credentials) /* O - Array of credentials */
|
|
|
{
|
|
|
OSStatus error; /* Error code */
|
|
|
SecTrustRef peerTrust; /* Peer trust reference */
|
|
|
CFIndex count; /* Number of credentials */
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
CFDataRef data; /* Certificate data */
|
|
|
int i; /* Looping var */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("httpCopyCredentials(http=%p, credentials=%p)", (void *)http, (void *)credentials));
|
|
|
|
|
|
if (credentials)
|
|
|
*credentials = NULL;
|
|
|
|
|
|
if (!http || !http->tls || !credentials)
|
|
|
return (-1);
|
|
|
|
|
|
if (!(error = SSLCopyPeerTrust(http->tls, &peerTrust)) && peerTrust)
|
|
|
{
|
|
|
DEBUG_printf(("2httpCopyCredentials: Peer provided %d certificates.", (int)SecTrustGetCertificateCount(peerTrust)));
|
|
|
|
|
|
if ((*credentials = cupsArrayNew(NULL, NULL)) != NULL)
|
|
|
{
|
|
|
count = SecTrustGetCertificateCount(peerTrust);
|
|
|
|
|
|
for (i = 0; i < count; i ++)
|
|
|
{
|
|
|
secCert = SecTrustGetCertificateAtIndex(peerTrust, i);
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
CFStringRef cf_name = SecCertificateCopySubjectSummary(secCert);
|
|
|
char name[1024];
|
|
|
if (cf_name)
|
|
|
CFStringGetCString(cf_name, name, sizeof(name), kCFStringEncodingUTF8);
|
|
|
else
|
|
|
strlcpy(name, "unknown", sizeof(name));
|
|
|
|
|
|
DEBUG_printf(("2httpCopyCredentials: Certificate %d name is \"%s\".", i, name));
|
|
|
#endif /* DEBUG */
|
|
|
|
|
|
if ((data = SecCertificateCopyData(secCert)) != NULL)
|
|
|
{
|
|
|
DEBUG_printf(("2httpCopyCredentials: Adding %d byte certificate blob.", (int)CFDataGetLength(data)));
|
|
|
|
|
|
httpAddCredential(*credentials, CFDataGetBytePtr(data), (size_t)CFDataGetLength(data));
|
|
|
CFRelease(data);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
CFRelease(peerTrust);
|
|
|
}
|
|
|
|
|
|
return (error);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpCreateCredentials()' - Create credentials in the internal format.
|
|
|
*/
|
|
|
|
|
|
http_tls_credentials_t /* O - Internal credentials */
|
|
|
_httpCreateCredentials(
|
|
|
cups_array_t *credentials) /* I - Array of credentials */
|
|
|
{
|
|
|
CFMutableArrayRef peerCerts; /* Peer credentials reference */
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
http_credential_t *credential; /* Credential data */
|
|
|
|
|
|
|
|
|
if (!credentials)
|
|
|
return (NULL);
|
|
|
|
|
|
if ((peerCerts = CFArrayCreateMutable(kCFAllocatorDefault,
|
|
|
cupsArrayCount(credentials),
|
|
|
&kCFTypeArrayCallBacks)) == NULL)
|
|
|
return (NULL);
|
|
|
|
|
|
for (credential = (http_credential_t *)cupsArrayFirst(credentials);
|
|
|
credential;
|
|
|
credential = (http_credential_t *)cupsArrayNext(credentials))
|
|
|
{
|
|
|
if ((secCert = http_cdsa_create_credential(credential)) != NULL)
|
|
|
{
|
|
|
CFArrayAppendValue(peerCerts, secCert);
|
|
|
CFRelease(secCert);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return (peerCerts);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpCredentialsAreValidForName()' - Return whether the credentials are valid for the given name.
|
|
|
*
|
|
|
* @since CUPS 2.0/macOS 10.10@
|
|
|
*/
|
|
|
|
|
|
int /* O - 1 if valid, 0 otherwise */
|
|
|
httpCredentialsAreValidForName(
|
|
|
cups_array_t *credentials, /* I - Credentials */
|
|
|
const char *common_name) /* I - Name to check */
|
|
|
{
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
CFStringRef cfcert_name = NULL;
|
|
|
/* Certificate's common name (CF string) */
|
|
|
char cert_name[256]; /* Certificate's common name (C string) */
|
|
|
int valid = 1; /* Valid name? */
|
|
|
|
|
|
|
|
|
if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL)
|
|
|
return (0);
|
|
|
|
|
|
/*
|
|
|
* Compare the common names...
|
|
|
*/
|
|
|
|
|
|
if ((cfcert_name = SecCertificateCopySubjectSummary(secCert)) == NULL)
|
|
|
{
|
|
|
/*
|
|
|
* Can't get common name, cannot be valid...
|
|
|
*/
|
|
|
|
|
|
valid = 0;
|
|
|
}
|
|
|
else if (CFStringGetCString(cfcert_name, cert_name, sizeof(cert_name), kCFStringEncodingUTF8) &&
|
|
|
_cups_strcasecmp(common_name, cert_name))
|
|
|
{
|
|
|
/*
|
|
|
* Not an exact match for the common name, check for wildcard certs...
|
|
|
*/
|
|
|
|
|
|
const char *domain = strchr(common_name, '.');
|
|
|
/* Domain in common name */
|
|
|
|
|
|
if (strncmp(cert_name, "*.", 2) || !domain || _cups_strcasecmp(domain, cert_name + 1))
|
|
|
{
|
|
|
/*
|
|
|
* Not a wildcard match.
|
|
|
*/
|
|
|
|
|
|
/* TODO: Check subject alternate names */
|
|
|
valid = 0;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (cfcert_name)
|
|
|
CFRelease(cfcert_name);
|
|
|
|
|
|
CFRelease(secCert);
|
|
|
|
|
|
return (valid);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpCredentialsGetTrust()' - Return the trust of credentials.
|
|
|
*
|
|
|
* @since CUPS 2.0/macOS 10.10@
|
|
|
*/
|
|
|
|
|
|
http_trust_t /* O - Level of trust */
|
|
|
httpCredentialsGetTrust(
|
|
|
cups_array_t *credentials, /* I - Credentials */
|
|
|
const char *common_name) /* I - Common name for trust lookup */
|
|
|
{
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
http_trust_t trust = HTTP_TRUST_OK;
|
|
|
/* Trusted? */
|
|
|
cups_array_t *tcreds = NULL; /* Trusted credentials */
|
|
|
_cups_globals_t *cg = _cupsGlobals();
|
|
|
/* Per-thread globals */
|
|
|
|
|
|
|
|
|
if (!common_name)
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No common name specified."), 1);
|
|
|
return (HTTP_TRUST_UNKNOWN);
|
|
|
}
|
|
|
|
|
|
if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL)
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create credentials from array."), 1);
|
|
|
return (HTTP_TRUST_UNKNOWN);
|
|
|
}
|
|
|
|
|
|
if (cg->any_root < 0)
|
|
|
_cupsSetDefaults();
|
|
|
|
|
|
/*
|
|
|
* Look this common name up in the default keychains...
|
|
|
*/
|
|
|
|
|
|
httpLoadCredentials(NULL, &tcreds, common_name);
|
|
|
|
|
|
if (tcreds)
|
|
|
{
|
|
|
char credentials_str[1024], /* String for incoming credentials */
|
|
|
tcreds_str[1024]; /* String for saved credentials */
|
|
|
|
|
|
httpCredentialsString(credentials, credentials_str, sizeof(credentials_str));
|
|
|
httpCredentialsString(tcreds, tcreds_str, sizeof(tcreds_str));
|
|
|
|
|
|
if (strcmp(credentials_str, tcreds_str))
|
|
|
{
|
|
|
/*
|
|
|
* Credentials don't match, let's look at the expiration date of the new
|
|
|
* credentials and allow if the new ones have a later expiration...
|
|
|
*/
|
|
|
|
|
|
if (!cg->trust_first)
|
|
|
{
|
|
|
/*
|
|
|
* Do not trust certificates on first use...
|
|
|
*/
|
|
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Trust on first use is disabled."), 1);
|
|
|
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
else if (httpCredentialsGetExpiration(credentials) <= httpCredentialsGetExpiration(tcreds))
|
|
|
{
|
|
|
/*
|
|
|
* The new credentials are not newly issued...
|
|
|
*/
|
|
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("New credentials are older than stored credentials."), 1);
|
|
|
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
else if (!httpCredentialsAreValidForName(credentials, common_name))
|
|
|
{
|
|
|
/*
|
|
|
* The common name does not match the issued certificate...
|
|
|
*/
|
|
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("New credentials are not valid for name."), 1);
|
|
|
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
else if (httpCredentialsGetExpiration(tcreds) < time(NULL))
|
|
|
{
|
|
|
/*
|
|
|
* Save the renewed credentials...
|
|
|
*/
|
|
|
|
|
|
trust = HTTP_TRUST_RENEWED;
|
|
|
|
|
|
httpSaveCredentials(NULL, credentials, common_name);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
httpFreeCredentials(tcreds);
|
|
|
}
|
|
|
else if (cg->validate_certs && !httpCredentialsAreValidForName(credentials, common_name))
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No stored credentials, not valid for name."), 1);
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
else if (!cg->trust_first)
|
|
|
{
|
|
|
/*
|
|
|
* See if we have a site CA certificate we can compare...
|
|
|
*/
|
|
|
|
|
|
if (!httpLoadCredentials(NULL, &tcreds, "site"))
|
|
|
{
|
|
|
if (cupsArrayCount(credentials) != (cupsArrayCount(tcreds) + 1))
|
|
|
{
|
|
|
/*
|
|
|
* Certificate isn't directly generated from the CA cert...
|
|
|
*/
|
|
|
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
* Do a tail comparison of the two certificates...
|
|
|
*/
|
|
|
|
|
|
http_credential_t *a, *b; /* Certificates */
|
|
|
|
|
|
for (a = (http_credential_t *)cupsArrayFirst(tcreds), b = (http_credential_t *)cupsArrayIndex(credentials, 1);
|
|
|
a && b;
|
|
|
a = (http_credential_t *)cupsArrayNext(tcreds), b = (http_credential_t *)cupsArrayNext(credentials))
|
|
|
if (a->datalen != b->datalen || memcmp(a->data, b->data, a->datalen))
|
|
|
break;
|
|
|
|
|
|
if (a || b)
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
|
|
|
if (trust != HTTP_TRUST_OK)
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Credentials do not validate against site CA certificate."), 1);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Trust on first use is disabled."), 1);
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (trust == HTTP_TRUST_OK && !cg->expired_certs && !SecCertificateIsValid(secCert, CFAbsoluteTimeGetCurrent()))
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Credentials have expired."), 1);
|
|
|
trust = HTTP_TRUST_EXPIRED;
|
|
|
}
|
|
|
|
|
|
if (trust == HTTP_TRUST_OK && !cg->any_root && cupsArrayCount(credentials) == 1)
|
|
|
{
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Self-signed credentials are blocked."), 1);
|
|
|
trust = HTTP_TRUST_INVALID;
|
|
|
}
|
|
|
|
|
|
CFRelease(secCert);
|
|
|
|
|
|
return (trust);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpCredentialsGetExpiration()' - Return the expiration date of the credentials.
|
|
|
*
|
|
|
* @since CUPS 2.0/macOS 10.10@
|
|
|
*/
|
|
|
|
|
|
time_t /* O - Expiration date of credentials */
|
|
|
httpCredentialsGetExpiration(
|
|
|
cups_array_t *credentials) /* I - Credentials */
|
|
|
{
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
time_t expiration; /* Expiration date */
|
|
|
|
|
|
|
|
|
if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL)
|
|
|
return (0);
|
|
|
|
|
|
expiration = (time_t)(SecCertificateNotValidAfter(secCert) + kCFAbsoluteTimeIntervalSince1970);
|
|
|
|
|
|
CFRelease(secCert);
|
|
|
|
|
|
return (expiration);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpCredentialsString()' - Return a string representing the credentials.
|
|
|
*
|
|
|
* @since CUPS 2.0/macOS 10.10@
|
|
|
*/
|
|
|
|
|
|
size_t /* O - Total size of credentials string */
|
|
|
httpCredentialsString(
|
|
|
cups_array_t *credentials, /* I - Credentials */
|
|
|
char *buffer, /* I - Buffer or @code NULL@ */
|
|
|
size_t bufsize) /* I - Size of buffer */
|
|
|
{
|
|
|
http_credential_t *first; /* First certificate */
|
|
|
SecCertificateRef secCert; /* Certificate reference */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("httpCredentialsString(credentials=%p, buffer=%p, bufsize=" CUPS_LLFMT ")", (void *)credentials, (void *)buffer, CUPS_LLCAST bufsize));
|
|
|
|
|
|
if (!buffer)
|
|
|
return (0);
|
|
|
|
|
|
if (buffer && bufsize > 0)
|
|
|
*buffer = '\0';
|
|
|
|
|
|
if ((first = (http_credential_t *)cupsArrayFirst(credentials)) != NULL &&
|
|
|
(secCert = http_cdsa_create_credential(first)) != NULL)
|
|
|
{
|
|
|
/*
|
|
|
* Copy certificate (string) values from the SecCertificateRef and produce
|
|
|
* a one-line summary. The API for accessing certificate values like the
|
|
|
* issuer name is, um, "interesting"...
|
|
|
*/
|
|
|
|
|
|
# if TARGET_OS_OSX
|
|
|
CFDictionaryRef cf_dict; /* Dictionary for certificate */
|
|
|
# endif /* TARGET_OS_OSX */
|
|
|
CFStringRef cf_string; /* CF string */
|
|
|
char commonName[256],/* Common name associated with cert */
|
|
|
issuer[256], /* Issuer name */
|
|
|
sigalg[256]; /* Signature algorithm */
|
|
|
time_t expiration; /* Expiration date of cert */
|
|
|
unsigned char md5_digest[16]; /* MD5 result */
|
|
|
|
|
|
if (SecCertificateCopyCommonName(secCert, &cf_string) == noErr)
|
|
|
{
|
|
|
CFStringGetCString(cf_string, commonName, (CFIndex)sizeof(commonName), kCFStringEncodingUTF8);
|
|
|
CFRelease(cf_string);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
strlcpy(commonName, "unknown", sizeof(commonName));
|
|
|
}
|
|
|
|
|
|
strlcpy(issuer, "unknown", sizeof(issuer));
|
|
|
strlcpy(sigalg, "UnknownSignature", sizeof(sigalg));
|
|
|
|
|
|
# if TARGET_OS_OSX
|
|
|
if ((cf_dict = SecCertificateCopyValues(secCert, NULL, NULL)) != NULL)
|
|
|
{
|
|
|
CFDictionaryRef cf_issuer = CFDictionaryGetValue(cf_dict, kSecOIDX509V1IssuerName);
|
|
|
CFDictionaryRef cf_sigalg = CFDictionaryGetValue(cf_dict, kSecOIDX509V1SignatureAlgorithm);
|
|
|
|
|
|
if (cf_issuer)
|
|
|
{
|
|
|
CFArrayRef cf_values = CFDictionaryGetValue(cf_issuer, kSecPropertyKeyValue);
|
|
|
CFIndex i, count = CFArrayGetCount(cf_values);
|
|
|
CFDictionaryRef cf_value;
|
|
|
|
|
|
for (i = 0; i < count; i ++)
|
|
|
{
|
|
|
cf_value = CFArrayGetValueAtIndex(cf_values, i);
|
|
|
|
|
|
if (!CFStringCompare(CFDictionaryGetValue(cf_value, kSecPropertyKeyLabel), kSecOIDOrganizationName, kCFCompareCaseInsensitive))
|
|
|
CFStringGetCString(CFDictionaryGetValue(cf_value, kSecPropertyKeyValue), issuer, (CFIndex)sizeof(issuer), kCFStringEncodingUTF8);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (cf_sigalg)
|
|
|
{
|
|
|
CFArrayRef cf_values = CFDictionaryGetValue(cf_sigalg, kSecPropertyKeyValue);
|
|
|
CFIndex i, count = CFArrayGetCount(cf_values);
|
|
|
CFDictionaryRef cf_value;
|
|
|
|
|
|
for (i = 0; i < count; i ++)
|
|
|
{
|
|
|
cf_value = CFArrayGetValueAtIndex(cf_values, i);
|
|
|
|
|
|
if (!CFStringCompare(CFDictionaryGetValue(cf_value, kSecPropertyKeyLabel), CFSTR("Algorithm"), kCFCompareCaseInsensitive))
|
|
|
{
|
|
|
CFStringRef cf_algorithm = CFDictionaryGetValue(cf_value, kSecPropertyKeyValue);
|
|
|
|
|
|
if (!CFStringCompare(cf_algorithm, CFSTR("1.2.840.113549.1.1.5"), kCFCompareCaseInsensitive))
|
|
|
strlcpy(sigalg, "SHA1WithRSAEncryption", sizeof(sigalg));
|
|
|
else if (!CFStringCompare(cf_algorithm, CFSTR("1.2.840.113549.1.1.11"), kCFCompareCaseInsensitive))
|
|
|
strlcpy(sigalg, "SHA256WithRSAEncryption", sizeof(sigalg));
|
|
|
else if (!CFStringCompare(cf_algorithm, CFSTR("1.2.840.113549.1.1.4"), kCFCompareCaseInsensitive))
|
|
|
strlcpy(sigalg, "MD5WithRSAEncryption", sizeof(sigalg));
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
CFRelease(cf_dict);
|
|
|
}
|
|
|
# endif /* TARGET_OS_OSX */
|
|
|
|
|
|
expiration = (time_t)(SecCertificateNotValidAfter(secCert) + kCFAbsoluteTimeIntervalSince1970);
|
|
|
|
|
|
cupsHashData("md5", first->data, first->datalen, md5_digest, sizeof(md5_digest));
|
|
|
|
|
|
snprintf(buffer, bufsize, "%s (issued by %s) / %s / %s / %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", commonName, issuer, httpGetDateString(expiration), sigalg, md5_digest[0], md5_digest[1], md5_digest[2], md5_digest[3], md5_digest[4], md5_digest[5], md5_digest[6], md5_digest[7], md5_digest[8], md5_digest[9], md5_digest[10], md5_digest[11], md5_digest[12], md5_digest[13], md5_digest[14], md5_digest[15]);
|
|
|
|
|
|
CFRelease(secCert);
|
|
|
}
|
|
|
|
|
|
DEBUG_printf(("1httpCredentialsString: Returning \"%s\".", buffer));
|
|
|
|
|
|
return (strlen(buffer));
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpFreeCredentials()' - Free internal credentials.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
_httpFreeCredentials(
|
|
|
http_tls_credentials_t credentials) /* I - Internal credentials */
|
|
|
{
|
|
|
if (!credentials)
|
|
|
return;
|
|
|
|
|
|
CFRelease(credentials);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpLoadCredentials()' - Load X.509 credentials from a keychain file.
|
|
|
*
|
|
|
* @since CUPS 2.0/OS 10.10@
|
|
|
*/
|
|
|
|
|
|
int /* O - 0 on success, -1 on error */
|
|
|
httpLoadCredentials(
|
|
|
const char *path, /* I - Keychain path or @code NULL@ for default */
|
|
|
cups_array_t **credentials, /* IO - Credentials */
|
|
|
const char *common_name) /* I - Common name for credentials */
|
|
|
{
|
|
|
OSStatus err; /* Error info */
|
|
|
#if TARGET_OS_OSX
|
|
|
char filename[1024]; /* Filename for keychain */
|
|
|
SecKeychainRef keychain = NULL,/* Keychain reference */
|
|
|
syschain = NULL;/* System keychain */
|
|
|
CFArrayRef list; /* Keychain list */
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
SecCertificateRef cert = NULL; /* Certificate */
|
|
|
CFDataRef data; /* Certificate data */
|
|
|
SecPolicyRef policy = NULL; /* Policy ref */
|
|
|
CFStringRef cfcommon_name = NULL;
|
|
|
/* Server name */
|
|
|
CFMutableDictionaryRef query = NULL; /* Query qualifiers */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("httpLoadCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, (void *)credentials, common_name));
|
|
|
|
|
|
if (!credentials)
|
|
|
return (-1);
|
|
|
|
|
|
*credentials = NULL;
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
keychain = http_cdsa_open_keychain(path, filename, sizeof(filename));
|
|
|
|
|
|
if (!keychain)
|
|
|
goto cleanup;
|
|
|
|
|
|
syschain = http_cdsa_open_system_keychain();
|
|
|
|
|
|
#else
|
|
|
if (path)
|
|
|
return (-1);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8);
|
|
|
|
|
|
policy = SecPolicyCreateSSL(1, cfcommon_name);
|
|
|
|
|
|
if (cfcommon_name)
|
|
|
CFRelease(cfcommon_name);
|
|
|
|
|
|
if (!policy)
|
|
|
goto cleanup;
|
|
|
|
|
|
if (!(query = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks)))
|
|
|
goto cleanup;
|
|
|
|
|
|
CFDictionaryAddValue(query, kSecClass, kSecClassCertificate);
|
|
|
CFDictionaryAddValue(query, kSecMatchPolicy, policy);
|
|
|
CFDictionaryAddValue(query, kSecReturnRef, kCFBooleanTrue);
|
|
|
CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitOne);
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
if (syschain)
|
|
|
{
|
|
|
const void *values[2] = { syschain, keychain };
|
|
|
|
|
|
list = CFArrayCreate(kCFAllocatorDefault, (const void **)values, 2, &kCFTypeArrayCallBacks);
|
|
|
}
|
|
|
else
|
|
|
list = CFArrayCreate(kCFAllocatorDefault, (const void **)&keychain, 1, &kCFTypeArrayCallBacks);
|
|
|
CFDictionaryAddValue(query, kSecMatchSearchList, list);
|
|
|
CFRelease(list);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
err = SecItemCopyMatching(query, (CFTypeRef *)&cert);
|
|
|
|
|
|
if (err)
|
|
|
goto cleanup;
|
|
|
|
|
|
if (CFGetTypeID(cert) != SecCertificateGetTypeID())
|
|
|
goto cleanup;
|
|
|
|
|
|
if ((data = SecCertificateCopyData(cert)) != NULL)
|
|
|
{
|
|
|
DEBUG_printf(("1httpLoadCredentials: Adding %d byte certificate blob.", (int)CFDataGetLength(data)));
|
|
|
|
|
|
*credentials = cupsArrayNew(NULL, NULL);
|
|
|
httpAddCredential(*credentials, CFDataGetBytePtr(data), (size_t)CFDataGetLength(data));
|
|
|
CFRelease(data);
|
|
|
}
|
|
|
|
|
|
cleanup :
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
if (keychain)
|
|
|
CFRelease(keychain);
|
|
|
|
|
|
if (syschain)
|
|
|
CFRelease(syschain);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
if (cert)
|
|
|
CFRelease(cert);
|
|
|
if (policy)
|
|
|
CFRelease(policy);
|
|
|
if (query)
|
|
|
CFRelease(query);
|
|
|
|
|
|
DEBUG_printf(("1httpLoadCredentials: Returning %d.", *credentials ? 0 : -1));
|
|
|
|
|
|
return (*credentials ? 0 : -1);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'httpSaveCredentials()' - Save X.509 credentials to a keychain file.
|
|
|
*
|
|
|
* @since CUPS 2.0/OS 10.10@
|
|
|
*/
|
|
|
|
|
|
int /* O - -1 on error, 0 on success */
|
|
|
httpSaveCredentials(
|
|
|
const char *path, /* I - Keychain path or @code NULL@ for default */
|
|
|
cups_array_t *credentials, /* I - Credentials */
|
|
|
const char *common_name) /* I - Common name for credentials */
|
|
|
{
|
|
|
int ret = -1; /* Return value */
|
|
|
OSStatus err; /* Error info */
|
|
|
#if TARGET_OS_OSX
|
|
|
char filename[1024]; /* Filename for keychain */
|
|
|
SecKeychainRef keychain = NULL;/* Keychain reference */
|
|
|
CFArrayRef list; /* Keychain list */
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
SecCertificateRef cert = NULL; /* Certificate */
|
|
|
CFMutableDictionaryRef attrs = NULL; /* Attributes for add */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("httpSaveCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, (void *)credentials, common_name));
|
|
|
if (!credentials)
|
|
|
goto cleanup;
|
|
|
|
|
|
if (!httpCredentialsAreValidForName(credentials, common_name))
|
|
|
{
|
|
|
DEBUG_puts("1httpSaveCredentials: Common name does not match.");
|
|
|
return (-1);
|
|
|
}
|
|
|
|
|
|
if ((cert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL)
|
|
|
{
|
|
|
DEBUG_puts("1httpSaveCredentials: Unable to create certificate.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
keychain = http_cdsa_open_keychain(path, filename, sizeof(filename));
|
|
|
|
|
|
if (!keychain)
|
|
|
goto cleanup;
|
|
|
|
|
|
#else
|
|
|
if (path)
|
|
|
return (-1);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
if ((attrs = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks)) == NULL)
|
|
|
{
|
|
|
DEBUG_puts("1httpSaveCredentials: Unable to create dictionary.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
CFDictionaryAddValue(attrs, kSecClass, kSecClassCertificate);
|
|
|
CFDictionaryAddValue(attrs, kSecValueRef, cert);
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
if ((list = CFArrayCreate(kCFAllocatorDefault, (const void **)&keychain, 1, &kCFTypeArrayCallBacks)) == NULL)
|
|
|
{
|
|
|
DEBUG_puts("1httpSaveCredentials: Unable to create list of keychains.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
CFDictionaryAddValue(attrs, kSecMatchSearchList, list);
|
|
|
CFRelease(list);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
/* Note: SecItemAdd consumes "attrs"... */
|
|
|
err = SecItemAdd(attrs, NULL);
|
|
|
DEBUG_printf(("1httpSaveCredentials: SecItemAdd returned %d.", (int)err));
|
|
|
|
|
|
cleanup :
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
if (keychain)
|
|
|
CFRelease(keychain);
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
if (cert)
|
|
|
CFRelease(cert);
|
|
|
|
|
|
DEBUG_printf(("1httpSaveCredentials: Returning %d.", ret));
|
|
|
|
|
|
return (ret);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSInitialize()' - Initialize the TLS stack.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
_httpTLSInitialize(void)
|
|
|
{
|
|
|
/*
|
|
|
* Nothing to do...
|
|
|
*/
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSPending()' - Return the number of pending TLS-encrypted bytes.
|
|
|
*/
|
|
|
|
|
|
size_t
|
|
|
_httpTLSPending(http_t *http) /* I - HTTP connection */
|
|
|
{
|
|
|
size_t bytes; /* Bytes that are available */
|
|
|
|
|
|
|
|
|
if (!SSLGetBufferedReadSize(http->tls, &bytes))
|
|
|
return (bytes);
|
|
|
|
|
|
return (0);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSRead()' - Read from a SSL/TLS connection.
|
|
|
*/
|
|
|
|
|
|
int /* O - Bytes read */
|
|
|
_httpTLSRead(http_t *http, /* I - HTTP connection */
|
|
|
char *buf, /* I - Buffer to store data */
|
|
|
int len) /* I - Length of buffer */
|
|
|
{
|
|
|
int result; /* Return value */
|
|
|
OSStatus error; /* Error info */
|
|
|
size_t processed; /* Number of bytes processed */
|
|
|
|
|
|
|
|
|
error = SSLRead(http->tls, buf, (size_t)len, &processed);
|
|
|
DEBUG_printf(("6_httpTLSRead: error=%d, processed=%d", (int)error,
|
|
|
(int)processed));
|
|
|
switch (error)
|
|
|
{
|
|
|
case 0 :
|
|
|
result = (int)processed;
|
|
|
break;
|
|
|
|
|
|
case errSSLWouldBlock :
|
|
|
if (processed)
|
|
|
result = (int)processed;
|
|
|
else
|
|
|
{
|
|
|
result = -1;
|
|
|
errno = EINTR;
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case errSSLClosedGraceful :
|
|
|
default :
|
|
|
if (processed)
|
|
|
result = (int)processed;
|
|
|
else
|
|
|
{
|
|
|
result = -1;
|
|
|
errno = EPIPE;
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
return (result);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSSetOptions()' - Set TLS protocol and cipher suite options.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
_httpTLSSetOptions(int options, /* I - Options */
|
|
|
int min_version, /* I - Minimum TLS version */
|
|
|
int max_version) /* I - Maximum TLS version */
|
|
|
{
|
|
|
if (!(options & _HTTP_TLS_SET_DEFAULT) || tls_options < 0)
|
|
|
{
|
|
|
tls_options = options;
|
|
|
tls_min_version = min_version;
|
|
|
tls_max_version = max_version;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSStart()' - Set up SSL/TLS support on a connection.
|
|
|
*/
|
|
|
|
|
|
int /* O - 0 on success, -1 on failure */
|
|
|
_httpTLSStart(http_t *http) /* I - HTTP connection */
|
|
|
{
|
|
|
char hostname[256], /* Hostname */
|
|
|
*hostptr; /* Pointer into hostname */
|
|
|
_cups_globals_t *cg = _cupsGlobals();
|
|
|
/* Pointer to library globals */
|
|
|
OSStatus error; /* Error code */
|
|
|
const char *message = NULL;/* Error message */
|
|
|
char msgbuf[1024]; /* Error message buffer */
|
|
|
cups_array_t *credentials; /* Credentials array */
|
|
|
cups_array_t *names; /* CUPS distinguished names */
|
|
|
CFArrayRef dn_array; /* CF distinguished names array */
|
|
|
CFIndex count; /* Number of credentials */
|
|
|
CFDataRef data; /* Certificate data */
|
|
|
int i; /* Looping var */
|
|
|
http_credential_t *credential; /* Credential data */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("3_httpTLSStart(http=%p)", (void *)http));
|
|
|
|
|
|
if (tls_options < 0)
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: Setting defaults.");
|
|
|
_cupsSetDefaults();
|
|
|
DEBUG_printf(("4_httpTLSStart: tls_options=%x, tls_min_version=%d, tls_max_version=%d", tls_options, tls_min_version, tls_max_version));
|
|
|
}
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
if (http->mode == _HTTP_MODE_SERVER && !tls_keychain)
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: cupsSetServerCredentials not called.");
|
|
|
http->error = errno = EINVAL;
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Server credentials not set."), 1);
|
|
|
|
|
|
return (-1);
|
|
|
}
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
if ((http->tls = SSLCreateContext(kCFAllocatorDefault, http->mode == _HTTP_MODE_CLIENT ? kSSLClientSide : kSSLServerSide, kSSLStreamType)) == NULL)
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: SSLCreateContext failed.");
|
|
|
http->error = errno = ENOMEM;
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
|
_cupsSetHTTPError(HTTP_STATUS_ERROR);
|
|
|
|
|
|
return (-1);
|
|
|
}
|
|
|
|
|
|
error = SSLSetConnection(http->tls, http);
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetConnection, error=%d", (int)error));
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
error = SSLSetIOFuncs(http->tls, http_cdsa_read, http_cdsa_write);
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetIOFuncs, error=%d", (int)error));
|
|
|
}
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
error = SSLSetSessionOption(http->tls, kSSLSessionOptionBreakOnServerAuth,
|
|
|
true);
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetSessionOption, error=%d", (int)error));
|
|
|
}
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
static const SSLProtocol protocols[] = /* Min/max protocol versions */
|
|
|
{
|
|
|
kSSLProtocol3,
|
|
|
kTLSProtocol1,
|
|
|
kTLSProtocol11,
|
|
|
kTLSProtocol12,
|
|
|
kTLSProtocol13
|
|
|
};
|
|
|
|
|
|
if (tls_min_version < _HTTP_TLS_MAX)
|
|
|
{
|
|
|
error = SSLSetProtocolVersionMin(http->tls, protocols[tls_min_version]);
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetProtocolVersionMin(%d), error=%d", protocols[tls_min_version], (int)error));
|
|
|
}
|
|
|
|
|
|
if (!error && tls_max_version < _HTTP_TLS_MAX)
|
|
|
{
|
|
|
error = SSLSetProtocolVersionMax(http->tls, protocols[tls_max_version]);
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetProtocolVersionMax(%d), error=%d", protocols[tls_max_version], (int)error));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
SSLCipherSuite supported[100]; /* Supported cipher suites */
|
|
|
size_t num_supported; /* Number of supported cipher suites */
|
|
|
SSLCipherSuite enabled[100]; /* Cipher suites to enable */
|
|
|
size_t num_enabled; /* Number of cipher suites to enable */
|
|
|
|
|
|
num_supported = sizeof(supported) / sizeof(supported[0]);
|
|
|
error = SSLGetSupportedCiphers(http->tls, supported, &num_supported);
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
DEBUG_printf(("4_httpTLSStart: %d cipher suites supported.", (int)num_supported));
|
|
|
|
|
|
for (i = 0, num_enabled = 0; i < (int)num_supported && num_enabled < (sizeof(enabled) / sizeof(enabled[0])); i ++)
|
|
|
{
|
|
|
switch (supported[i])
|
|
|
{
|
|
|
/* Obviously insecure cipher suites that we never want to use */
|
|
|
case SSL_NULL_WITH_NULL_NULL :
|
|
|
case SSL_RSA_WITH_NULL_MD5 :
|
|
|
case SSL_RSA_WITH_NULL_SHA :
|
|
|
case SSL_RSA_EXPORT_WITH_RC4_40_MD5 :
|
|
|
case SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5 :
|
|
|
case SSL_RSA_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_RSA_WITH_DES_CBC_SHA :
|
|
|
case SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_DH_DSS_WITH_DES_CBC_SHA :
|
|
|
case SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_DH_RSA_WITH_DES_CBC_SHA :
|
|
|
case SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_DHE_DSS_WITH_DES_CBC_SHA :
|
|
|
case SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_DHE_RSA_WITH_DES_CBC_SHA :
|
|
|
case SSL_DH_anon_EXPORT_WITH_RC4_40_MD5 :
|
|
|
case SSL_DH_anon_WITH_RC4_128_MD5 :
|
|
|
case SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA :
|
|
|
case SSL_DH_anon_WITH_DES_CBC_SHA :
|
|
|
case SSL_DH_anon_WITH_3DES_EDE_CBC_SHA :
|
|
|
case SSL_FORTEZZA_DMS_WITH_NULL_SHA :
|
|
|
case TLS_DH_anon_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DH_anon_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_ECDH_ECDSA_WITH_NULL_SHA :
|
|
|
case TLS_ECDHE_RSA_WITH_NULL_SHA :
|
|
|
case TLS_ECDH_anon_WITH_NULL_SHA :
|
|
|
case TLS_ECDH_anon_WITH_RC4_128_SHA :
|
|
|
case TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_ECDH_anon_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_ECDH_anon_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_RSA_WITH_NULL_SHA256 :
|
|
|
case TLS_DH_anon_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DH_anon_WITH_AES_256_CBC_SHA256 :
|
|
|
case TLS_PSK_WITH_NULL_SHA :
|
|
|
case TLS_DHE_PSK_WITH_NULL_SHA :
|
|
|
case TLS_RSA_PSK_WITH_NULL_SHA :
|
|
|
case TLS_DH_anon_WITH_AES_128_GCM_SHA256 :
|
|
|
case TLS_DH_anon_WITH_AES_256_GCM_SHA384 :
|
|
|
case TLS_PSK_WITH_NULL_SHA256 :
|
|
|
case TLS_PSK_WITH_NULL_SHA384 :
|
|
|
case TLS_DHE_PSK_WITH_NULL_SHA256 :
|
|
|
case TLS_DHE_PSK_WITH_NULL_SHA384 :
|
|
|
case TLS_RSA_PSK_WITH_NULL_SHA256 :
|
|
|
case TLS_RSA_PSK_WITH_NULL_SHA384 :
|
|
|
case SSL_RSA_WITH_DES_CBC_MD5 :
|
|
|
DEBUG_printf(("4_httpTLSStart: Excluding insecure cipher suite %d", supported[i]));
|
|
|
break;
|
|
|
|
|
|
/* RC4 cipher suites that should only be used as a last resort */
|
|
|
case SSL_RSA_WITH_RC4_128_MD5 :
|
|
|
case SSL_RSA_WITH_RC4_128_SHA :
|
|
|
case TLS_ECDH_ECDSA_WITH_RC4_128_SHA :
|
|
|
case TLS_ECDHE_ECDSA_WITH_RC4_128_SHA :
|
|
|
case TLS_ECDH_RSA_WITH_RC4_128_SHA :
|
|
|
case TLS_ECDHE_RSA_WITH_RC4_128_SHA :
|
|
|
case TLS_PSK_WITH_RC4_128_SHA :
|
|
|
case TLS_DHE_PSK_WITH_RC4_128_SHA :
|
|
|
case TLS_RSA_PSK_WITH_RC4_128_SHA :
|
|
|
if (tls_options & _HTTP_TLS_ALLOW_RC4)
|
|
|
enabled[num_enabled ++] = supported[i];
|
|
|
else
|
|
|
DEBUG_printf(("4_httpTLSStart: Excluding RC4 cipher suite %d", supported[i]));
|
|
|
break;
|
|
|
|
|
|
/* DH/DHE cipher suites that are problematic with parameters < 1024 bits */
|
|
|
case TLS_DH_DSS_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DH_RSA_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DHE_DSS_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DH_DSS_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_DH_RSA_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_DHE_DSS_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_DH_DSS_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DH_RSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DH_DSS_WITH_AES_256_CBC_SHA256 :
|
|
|
case TLS_DH_RSA_WITH_AES_256_CBC_SHA256 :
|
|
|
case TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 :
|
|
|
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 :
|
|
|
case TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_DHE_PSK_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_DHE_PSK_WITH_AES_256_CBC_SHA :
|
|
|
case TLS_DHE_PSK_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_DHE_PSK_WITH_AES_256_CBC_SHA384 :
|
|
|
if (tls_options & _HTTP_TLS_DENY_CBC)
|
|
|
{
|
|
|
DEBUG_printf(("4_httpTLSStart: Excluding CBC cipher suite %d", supported[i]));
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
// case TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 :
|
|
|
// case TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 :
|
|
|
case TLS_DH_RSA_WITH_AES_128_GCM_SHA256 :
|
|
|
case TLS_DH_RSA_WITH_AES_256_GCM_SHA384 :
|
|
|
// case TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 :
|
|
|
// case TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 :
|
|
|
case TLS_DH_DSS_WITH_AES_128_GCM_SHA256 :
|
|
|
case TLS_DH_DSS_WITH_AES_256_GCM_SHA384 :
|
|
|
case TLS_DHE_PSK_WITH_AES_128_GCM_SHA256 :
|
|
|
case TLS_DHE_PSK_WITH_AES_256_GCM_SHA384 :
|
|
|
if (tls_options & _HTTP_TLS_ALLOW_DH)
|
|
|
enabled[num_enabled ++] = supported[i];
|
|
|
else
|
|
|
DEBUG_printf(("4_httpTLSStart: Excluding DH/DHE cipher suite %d", supported[i]));
|
|
|
break;
|
|
|
|
|
|
case TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 :
|
|
|
case TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384 :
|
|
|
case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 :
|
|
|
case TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 :
|
|
|
case TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384 :
|
|
|
case TLS_RSA_WITH_3DES_EDE_CBC_SHA :
|
|
|
case TLS_RSA_WITH_AES_128_CBC_SHA :
|
|
|
case TLS_RSA_WITH_AES_256_CBC_SHA :
|
|
|
if (tls_options & _HTTP_TLS_DENY_CBC)
|
|
|
{
|
|
|
DEBUG_printf(("4_httpTLSStart: Excluding CBC cipher suite %d", supported[i]));
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
/* Anything else we'll assume is "secure" */
|
|
|
default :
|
|
|
enabled[num_enabled ++] = supported[i];
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: %d cipher suites enabled.", (int)num_enabled));
|
|
|
error = SSLSetEnabledCiphers(http->tls, enabled, num_enabled);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (!error && http->mode == _HTTP_MODE_CLIENT)
|
|
|
{
|
|
|
/*
|
|
|
* Client: set client-side credentials, if any...
|
|
|
*/
|
|
|
|
|
|
if (cg->client_cert_cb)
|
|
|
{
|
|
|
error = SSLSetSessionOption(http->tls,
|
|
|
kSSLSessionOptionBreakOnCertRequested, true);
|
|
|
DEBUG_printf(("4_httpTLSStart: kSSLSessionOptionBreakOnCertRequested, "
|
|
|
"error=%d", (int)error));
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
error = http_cdsa_set_credentials(http);
|
|
|
DEBUG_printf(("4_httpTLSStart: http_cdsa_set_credentials, error=%d",
|
|
|
(int)error));
|
|
|
}
|
|
|
}
|
|
|
else if (!error)
|
|
|
{
|
|
|
/*
|
|
|
* Server: find/create a certificate for TLS...
|
|
|
*/
|
|
|
|
|
|
if (http->fields[HTTP_FIELD_HOST])
|
|
|
{
|
|
|
/*
|
|
|
* Use hostname for TLS upgrade...
|
|
|
*/
|
|
|
|
|
|
strlcpy(hostname, http->fields[HTTP_FIELD_HOST], sizeof(hostname));
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
* Resolve hostname from connection address...
|
|
|
*/
|
|
|
|
|
|
http_addr_t addr; /* Connection address */
|
|
|
socklen_t addrlen; /* Length of address */
|
|
|
|
|
|
addrlen = sizeof(addr);
|
|
|
if (getsockname(http->fd, (struct sockaddr *)&addr, &addrlen))
|
|
|
{
|
|
|
DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno)));
|
|
|
hostname[0] = '\0';
|
|
|
}
|
|
|
else if (httpAddrLocalhost(&addr))
|
|
|
hostname[0] = '\0';
|
|
|
else
|
|
|
{
|
|
|
httpAddrLookup(&addr, hostname, sizeof(hostname));
|
|
|
DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (isdigit(hostname[0] & 255) || hostname[0] == '[')
|
|
|
hostname[0] = '\0'; /* Don't allow numeric addresses */
|
|
|
|
|
|
if (hostname[0])
|
|
|
http->tls_credentials = http_cdsa_copy_server(hostname);
|
|
|
else if (tls_common_name)
|
|
|
http->tls_credentials = http_cdsa_copy_server(tls_common_name);
|
|
|
|
|
|
if (!http->tls_credentials && tls_auto_create && (hostname[0] || tls_common_name))
|
|
|
{
|
|
|
DEBUG_printf(("4_httpTLSStart: Auto-create credentials for \"%s\".", hostname[0] ? hostname : tls_common_name));
|
|
|
|
|
|
if (!cupsMakeServerCredentials(tls_keypath, hostname[0] ? hostname : tls_common_name, 0, NULL, time(NULL) + 365 * 86400))
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: cupsMakeServerCredentials failed.");
|
|
|
http->error = errno = EINVAL;
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create server credentials."), 1);
|
|
|
|
|
|
return (-1);
|
|
|
}
|
|
|
|
|
|
http->tls_credentials = http_cdsa_copy_server(hostname[0] ? hostname : tls_common_name);
|
|
|
}
|
|
|
|
|
|
if (!http->tls_credentials)
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: Unable to find server credentials.");
|
|
|
http->error = errno = EINVAL;
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to find server credentials."), 1);
|
|
|
|
|
|
return (-1);
|
|
|
}
|
|
|
|
|
|
error = SSLSetCertificate(http->tls, http->tls_credentials);
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetCertificate, error=%d", (int)error));
|
|
|
}
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: tls_credentials=%p", (void *)http->tls_credentials));
|
|
|
|
|
|
/*
|
|
|
* Let the server know which hostname/domain we are trying to connect to
|
|
|
* in case it wants to serve up a certificate with a matching common name.
|
|
|
*/
|
|
|
|
|
|
if (!error && http->mode == _HTTP_MODE_CLIENT)
|
|
|
{
|
|
|
/*
|
|
|
* Client: get the hostname to use for TLS...
|
|
|
*/
|
|
|
|
|
|
if (httpAddrLocalhost(http->hostaddr))
|
|
|
{
|
|
|
strlcpy(hostname, "localhost", sizeof(hostname));
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
* Otherwise make sure the hostname we have does not end in a trailing dot.
|
|
|
*/
|
|
|
|
|
|
strlcpy(hostname, http->hostname, sizeof(hostname));
|
|
|
if ((hostptr = hostname + strlen(hostname) - 1) >= hostname &&
|
|
|
*hostptr == '.')
|
|
|
*hostptr = '\0';
|
|
|
}
|
|
|
|
|
|
error = SSLSetPeerDomainName(http->tls, hostname, strlen(hostname));
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLSetPeerDomainName, error=%d", (int)error));
|
|
|
}
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
int done = 0; /* Are we done yet? */
|
|
|
double old_timeout; /* Old timeout value */
|
|
|
http_timeout_cb_t old_cb; /* Old timeout callback */
|
|
|
void *old_data; /* Old timeout data */
|
|
|
|
|
|
/*
|
|
|
* Enforce a minimum timeout of 10 seconds for the TLS handshake...
|
|
|
*/
|
|
|
|
|
|
old_timeout = http->timeout_value;
|
|
|
old_cb = http->timeout_cb;
|
|
|
old_data = http->timeout_data;
|
|
|
|
|
|
if (!old_cb || old_timeout < 10.0)
|
|
|
{
|
|
|
DEBUG_puts("4_httpTLSStart: Setting timeout to 10 seconds.");
|
|
|
httpSetTimeout(http, 10.0, NULL, NULL);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Do the TLS handshake...
|
|
|
*/
|
|
|
|
|
|
while (!error && !done)
|
|
|
{
|
|
|
error = SSLHandshake(http->tls);
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: SSLHandshake returned %d.", (int)error));
|
|
|
|
|
|
switch (error)
|
|
|
{
|
|
|
case noErr :
|
|
|
done = 1;
|
|
|
break;
|
|
|
|
|
|
case errSSLWouldBlock :
|
|
|
error = noErr; /* Force a retry */
|
|
|
usleep(1000); /* in 1 millisecond */
|
|
|
break;
|
|
|
|
|
|
case errSSLServerAuthCompleted :
|
|
|
error = 0;
|
|
|
if (cg->server_cert_cb)
|
|
|
{
|
|
|
error = httpCopyCredentials(http, &credentials);
|
|
|
if (!error)
|
|
|
{
|
|
|
error = (cg->server_cert_cb)(http, http->tls, credentials,
|
|
|
cg->server_cert_data);
|
|
|
httpFreeCredentials(credentials);
|
|
|
}
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: Server certificate callback "
|
|
|
"returned %d.", (int)error));
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case errSSLClientCertRequested :
|
|
|
error = 0;
|
|
|
|
|
|
if (cg->client_cert_cb)
|
|
|
{
|
|
|
names = NULL;
|
|
|
if (!(error = SSLCopyDistinguishedNames(http->tls, &dn_array)) &&
|
|
|
dn_array)
|
|
|
{
|
|
|
if ((names = cupsArrayNew(NULL, NULL)) != NULL)
|
|
|
{
|
|
|
for (i = 0, count = CFArrayGetCount(dn_array); i < count; i++)
|
|
|
{
|
|
|
data = (CFDataRef)CFArrayGetValueAtIndex(dn_array, i);
|
|
|
|
|
|
if ((credential = malloc(sizeof(*credential))) != NULL)
|
|
|
{
|
|
|
credential->datalen = (size_t)CFDataGetLength(data);
|
|
|
if ((credential->data = malloc(credential->datalen)))
|
|
|
{
|
|
|
memcpy((void *)credential->data, CFDataGetBytePtr(data),
|
|
|
credential->datalen);
|
|
|
cupsArrayAdd(names, credential);
|
|
|
}
|
|
|
else
|
|
|
free(credential);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
CFRelease(dn_array);
|
|
|
}
|
|
|
|
|
|
if (!error)
|
|
|
{
|
|
|
error = (cg->client_cert_cb)(http, http->tls, names,
|
|
|
cg->client_cert_data);
|
|
|
|
|
|
DEBUG_printf(("4_httpTLSStart: Client certificate callback "
|
|
|
"returned %d.", (int)error));
|
|
|
}
|
|
|
|
|
|
httpFreeCredentials(names);
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case errSSLUnknownRootCert :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(untrusted certificate).");
|
|
|
break;
|
|
|
|
|
|
case errSSLNoRootCert :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(self-signed certificate).");
|
|
|
break;
|
|
|
|
|
|
case errSSLCertExpired :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(expired certificate).");
|
|
|
break;
|
|
|
|
|
|
case errSSLCertNotYetValid :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(certificate not yet valid).");
|
|
|
break;
|
|
|
|
|
|
case errSSLHostNameMismatch :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(host name mismatch).");
|
|
|
break;
|
|
|
|
|
|
case errSSLXCertChainInvalid :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(certificate chain invalid).");
|
|
|
break;
|
|
|
|
|
|
case errSSLConnectionRefused :
|
|
|
message = _("Unable to establish a secure connection to host "
|
|
|
"(peer dropped connection before responding).");
|
|
|
break;
|
|
|
|
|
|
default :
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Restore the previous timeout settings...
|
|
|
*/
|
|
|
|
|
|
httpSetTimeout(http, old_timeout, old_cb, old_data);
|
|
|
}
|
|
|
|
|
|
if (error)
|
|
|
{
|
|
|
http->error = error;
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
|
errno = ECONNREFUSED;
|
|
|
|
|
|
CFRelease(http->tls);
|
|
|
http->tls = NULL;
|
|
|
|
|
|
/*
|
|
|
* If an error string wasn't set by the callbacks use a generic one...
|
|
|
*/
|
|
|
|
|
|
if (!message)
|
|
|
{
|
|
|
if (!cg->lang_default)
|
|
|
cg->lang_default = cupsLangDefault();
|
|
|
|
|
|
snprintf(msgbuf, sizeof(msgbuf), _cupsLangString(cg->lang_default, _("Unable to establish a secure connection to host (%d).")), error);
|
|
|
message = msgbuf;
|
|
|
}
|
|
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, message, 1);
|
|
|
|
|
|
return (-1);
|
|
|
}
|
|
|
|
|
|
return (0);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSStop()' - Shut down SSL/TLS on a connection.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
_httpTLSStop(http_t *http) /* I - HTTP connection */
|
|
|
{
|
|
|
while (SSLClose(http->tls) == errSSLWouldBlock)
|
|
|
usleep(1000);
|
|
|
|
|
|
CFRelease(http->tls);
|
|
|
|
|
|
if (http->tls_credentials)
|
|
|
CFRelease(http->tls_credentials);
|
|
|
|
|
|
http->tls = NULL;
|
|
|
http->tls_credentials = NULL;
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* '_httpTLSWrite()' - Write to a SSL/TLS connection.
|
|
|
*/
|
|
|
|
|
|
int /* O - Bytes written */
|
|
|
_httpTLSWrite(http_t *http, /* I - HTTP connection */
|
|
|
const char *buf, /* I - Buffer holding data */
|
|
|
int len) /* I - Length of buffer */
|
|
|
{
|
|
|
ssize_t result; /* Return value */
|
|
|
OSStatus error; /* Error info */
|
|
|
size_t processed; /* Number of bytes processed */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("2_httpTLSWrite(http=%p, buf=%p, len=%d)", (void *)http, (void *)buf, len));
|
|
|
|
|
|
error = SSLWrite(http->tls, buf, (size_t)len, &processed);
|
|
|
|
|
|
switch (error)
|
|
|
{
|
|
|
case 0 :
|
|
|
result = (int)processed;
|
|
|
break;
|
|
|
|
|
|
case errSSLWouldBlock :
|
|
|
if (processed)
|
|
|
{
|
|
|
result = (int)processed;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
result = -1;
|
|
|
errno = EINTR;
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case errSSLClosedGraceful :
|
|
|
default :
|
|
|
if (processed)
|
|
|
{
|
|
|
result = (int)processed;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
result = -1;
|
|
|
errno = EPIPE;
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
DEBUG_printf(("3_httpTLSWrite: Returning %d.", (int)result));
|
|
|
|
|
|
return ((int)result);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_copy_server()' - Find and copy server credentials from the keychain.
|
|
|
*/
|
|
|
|
|
|
static CFArrayRef /* O - Array of certificates or NULL */
|
|
|
http_cdsa_copy_server(
|
|
|
const char *common_name) /* I - Server's hostname */
|
|
|
{
|
|
|
#if TARGET_OS_OSX
|
|
|
OSStatus err; /* Error info */
|
|
|
SecIdentityRef identity = NULL;/* Identity */
|
|
|
CFArrayRef certificates = NULL;
|
|
|
/* Certificate array */
|
|
|
SecPolicyRef policy = NULL; /* Policy ref */
|
|
|
CFStringRef cfcommon_name = NULL;
|
|
|
/* Server name */
|
|
|
CFMutableDictionaryRef query = NULL; /* Query qualifiers */
|
|
|
CFArrayRef list = NULL; /* Keychain list */
|
|
|
SecKeychainRef syschain = NULL;/* System keychain */
|
|
|
SecKeychainStatus status = 0; /* Keychain status */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("3http_cdsa_copy_server(common_name=\"%s\")", common_name));
|
|
|
|
|
|
cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8);
|
|
|
|
|
|
policy = SecPolicyCreateSSL(1, cfcommon_name);
|
|
|
|
|
|
if (!policy)
|
|
|
{
|
|
|
DEBUG_puts("4http_cdsa_copy_server: Unable to create SSL policy.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
if (!(query = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks)))
|
|
|
{
|
|
|
DEBUG_puts("4http_cdsa_copy_server: Unable to create query dictionary.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
_cupsMutexLock(&tls_mutex);
|
|
|
|
|
|
err = SecKeychainGetStatus(tls_keychain, &status);
|
|
|
|
|
|
if (err == noErr && !(status & kSecUnlockStateStatus) && tls_cups_keychain)
|
|
|
SecKeychainUnlock(tls_keychain, _CUPS_CDSA_PASSLEN, _CUPS_CDSA_PASSWORD, TRUE);
|
|
|
|
|
|
CFDictionaryAddValue(query, kSecClass, kSecClassIdentity);
|
|
|
CFDictionaryAddValue(query, kSecMatchPolicy, policy);
|
|
|
CFDictionaryAddValue(query, kSecReturnRef, kCFBooleanTrue);
|
|
|
CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitOne);
|
|
|
|
|
|
syschain = http_cdsa_open_system_keychain();
|
|
|
|
|
|
if (syschain)
|
|
|
{
|
|
|
const void *values[2] = { syschain, tls_keychain };
|
|
|
|
|
|
list = CFArrayCreate(kCFAllocatorDefault, (const void **)values, 2, &kCFTypeArrayCallBacks);
|
|
|
}
|
|
|
else
|
|
|
list = CFArrayCreate(kCFAllocatorDefault, (const void **)&tls_keychain, 1, &kCFTypeArrayCallBacks);
|
|
|
|
|
|
CFDictionaryAddValue(query, kSecMatchSearchList, list);
|
|
|
CFRelease(list);
|
|
|
|
|
|
err = SecItemCopyMatching(query, (CFTypeRef *)&identity);
|
|
|
|
|
|
_cupsMutexUnlock(&tls_mutex);
|
|
|
|
|
|
if (err != noErr)
|
|
|
{
|
|
|
DEBUG_printf(("4http_cdsa_copy_server: SecItemCopyMatching failed with status %d.", (int)err));
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
if (CFGetTypeID(identity) != SecIdentityGetTypeID())
|
|
|
{
|
|
|
DEBUG_puts("4http_cdsa_copy_server: Search returned something that is not an identity.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
if ((certificates = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks)) == NULL)
|
|
|
{
|
|
|
DEBUG_puts("4http_cdsa_copy_server: Unable to create array of certificates.");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
cleanup :
|
|
|
|
|
|
if (syschain)
|
|
|
CFRelease(syschain);
|
|
|
if (identity)
|
|
|
CFRelease(identity);
|
|
|
if (policy)
|
|
|
CFRelease(policy);
|
|
|
if (cfcommon_name)
|
|
|
CFRelease(cfcommon_name);
|
|
|
if (query)
|
|
|
CFRelease(query);
|
|
|
|
|
|
DEBUG_printf(("4http_cdsa_copy_server: Returning %p.", (void *)certificates));
|
|
|
|
|
|
return (certificates);
|
|
|
#else
|
|
|
|
|
|
(void)common_name;
|
|
|
|
|
|
if (!tls_selfsigned)
|
|
|
return (NULL);
|
|
|
|
|
|
return (CFArrayCreate(NULL, (const void **)&tls_selfsigned, 1, &kCFTypeArrayCallBacks));
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_create_credential()' - Create a single credential in the internal format.
|
|
|
*/
|
|
|
|
|
|
static SecCertificateRef /* O - Certificate */
|
|
|
http_cdsa_create_credential(
|
|
|
http_credential_t *credential) /* I - Credential */
|
|
|
{
|
|
|
SecCertificateRef cert; /* Certificate */
|
|
|
CFDataRef data; /* Data object */
|
|
|
|
|
|
|
|
|
if (!credential)
|
|
|
return (NULL);
|
|
|
|
|
|
data = CFDataCreate(kCFAllocatorDefault, credential->data, (CFIndex)credential->datalen);
|
|
|
cert = SecCertificateCreateWithData(kCFAllocatorDefault, data);
|
|
|
CFRelease(data);
|
|
|
|
|
|
return (cert);
|
|
|
}
|
|
|
|
|
|
|
|
|
#if TARGET_OS_OSX
|
|
|
/*
|
|
|
* 'http_cdsa_default_path()' - Get the default keychain path.
|
|
|
*/
|
|
|
|
|
|
static const char * /* O - Keychain path */
|
|
|
http_cdsa_default_path(char *buffer, /* I - Path buffer */
|
|
|
size_t bufsize) /* I - Size of buffer */
|
|
|
{
|
|
|
_cups_globals_t *cg = _cupsGlobals();
|
|
|
/* Pointer to library globals */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* Determine the default keychain path. Note that the login and system
|
|
|
* keychains are no longer accessible to user applications starting in macOS
|
|
|
* 10.11.4 (!), so we need to create our own keychain just for CUPS.
|
|
|
*/
|
|
|
|
|
|
if (cg->home)
|
|
|
snprintf(buffer, bufsize, "%s/.cups/ssl.keychain", cg->home);
|
|
|
else
|
|
|
strlcpy(buffer, "/etc/cups/ssl.keychain", bufsize);
|
|
|
|
|
|
DEBUG_printf(("1http_cdsa_default_path: Using default path \"%s\".", buffer));
|
|
|
|
|
|
return (buffer);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_open_keychain()' - Open (or create) a keychain.
|
|
|
*/
|
|
|
|
|
|
static SecKeychainRef /* O - Keychain or NULL */
|
|
|
http_cdsa_open_keychain(
|
|
|
const char *path, /* I - Path to keychain */
|
|
|
char *filename, /* I - Keychain filename */
|
|
|
size_t filesize) /* I - Size of filename buffer */
|
|
|
{
|
|
|
SecKeychainRef keychain = NULL;/* Temporary keychain */
|
|
|
OSStatus err; /* Error code */
|
|
|
Boolean interaction; /* Interaction allowed? */
|
|
|
SecKeychainStatus status = 0; /* Keychain status */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* Get the keychain filename...
|
|
|
*/
|
|
|
|
|
|
if (!path)
|
|
|
{
|
|
|
path = http_cdsa_default_path(filename, filesize);
|
|
|
tls_cups_keychain = 1;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
strlcpy(filename, path, filesize);
|
|
|
tls_cups_keychain = 0;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Save the interaction setting and disable while we open the keychain...
|
|
|
*/
|
|
|
|
|
|
SecKeychainGetUserInteractionAllowed(&interaction);
|
|
|
SecKeychainSetUserInteractionAllowed(FALSE);
|
|
|
|
|
|
if (access(path, R_OK) && tls_cups_keychain)
|
|
|
{
|
|
|
/*
|
|
|
* Create a new keychain at the given path...
|
|
|
*/
|
|
|
|
|
|
err = SecKeychainCreate(path, _CUPS_CDSA_PASSLEN, _CUPS_CDSA_PASSWORD, FALSE, NULL, &keychain);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
* Open the existing keychain and unlock as needed...
|
|
|
*/
|
|
|
|
|
|
err = SecKeychainOpen(path, &keychain);
|
|
|
|
|
|
if (err == noErr)
|
|
|
err = SecKeychainGetStatus(keychain, &status);
|
|
|
|
|
|
if (err == noErr && !(status & kSecUnlockStateStatus) && tls_cups_keychain)
|
|
|
err = SecKeychainUnlock(keychain, _CUPS_CDSA_PASSLEN, _CUPS_CDSA_PASSWORD, TRUE);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Restore interaction setting...
|
|
|
*/
|
|
|
|
|
|
SecKeychainSetUserInteractionAllowed(interaction);
|
|
|
|
|
|
/*
|
|
|
* Release the keychain if we had any errors...
|
|
|
*/
|
|
|
|
|
|
if (err != noErr)
|
|
|
{
|
|
|
/* TODO: Set cups last error string */
|
|
|
DEBUG_printf(("4http_cdsa_open_keychain: Unable to open keychain (%d), returning NULL.", (int)err));
|
|
|
|
|
|
if (keychain)
|
|
|
{
|
|
|
CFRelease(keychain);
|
|
|
keychain = NULL;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Return the keychain or NULL...
|
|
|
*/
|
|
|
|
|
|
return (keychain);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_open_system_keychain()' - Open the System keychain.
|
|
|
*/
|
|
|
|
|
|
static SecKeychainRef
|
|
|
http_cdsa_open_system_keychain(void)
|
|
|
{
|
|
|
SecKeychainRef keychain = NULL;/* Temporary keychain */
|
|
|
OSStatus err; /* Error code */
|
|
|
Boolean interaction; /* Interaction allowed? */
|
|
|
SecKeychainStatus status = 0; /* Keychain status */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* Save the interaction setting and disable while we open the keychain...
|
|
|
*/
|
|
|
|
|
|
SecKeychainGetUserInteractionAllowed(&interaction);
|
|
|
SecKeychainSetUserInteractionAllowed(TRUE);
|
|
|
|
|
|
err = SecKeychainOpen("/Library/Keychains/System.keychain", &keychain);
|
|
|
|
|
|
if (err == noErr)
|
|
|
err = SecKeychainGetStatus(keychain, &status);
|
|
|
|
|
|
if (err == noErr && !(status & kSecUnlockStateStatus))
|
|
|
err = errSecInteractionNotAllowed;
|
|
|
|
|
|
/*
|
|
|
* Restore interaction setting...
|
|
|
*/
|
|
|
|
|
|
SecKeychainSetUserInteractionAllowed(interaction);
|
|
|
|
|
|
/*
|
|
|
* Release the keychain if we had any errors...
|
|
|
*/
|
|
|
|
|
|
if (err != noErr)
|
|
|
{
|
|
|
/* TODO: Set cups last error string */
|
|
|
DEBUG_printf(("4http_cdsa_open_system_keychain: Unable to open keychain (%d), returning NULL.", (int)err));
|
|
|
|
|
|
if (keychain)
|
|
|
{
|
|
|
CFRelease(keychain);
|
|
|
keychain = NULL;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Return the keychain or NULL...
|
|
|
*/
|
|
|
|
|
|
return (keychain);
|
|
|
}
|
|
|
#endif /* TARGET_OS_OSX */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_read()' - Read function for the CDSA library.
|
|
|
*/
|
|
|
|
|
|
static OSStatus /* O - -1 on error, 0 on success */
|
|
|
http_cdsa_read(
|
|
|
SSLConnectionRef connection, /* I - SSL/TLS connection */
|
|
|
void *data, /* I - Data buffer */
|
|
|
size_t *dataLength) /* IO - Number of bytes */
|
|
|
{
|
|
|
OSStatus result; /* Return value */
|
|
|
ssize_t bytes; /* Number of bytes read */
|
|
|
http_t *http; /* HTTP connection */
|
|
|
|
|
|
|
|
|
http = (http_t *)connection;
|
|
|
|
|
|
if (!http->blocking || http->timeout_value > 0.0)
|
|
|
{
|
|
|
/*
|
|
|
* Make sure we have data before we read...
|
|
|
*/
|
|
|
|
|
|
while (!_httpWait(http, http->wait_value, 0))
|
|
|
{
|
|
|
if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
|
|
|
continue;
|
|
|
|
|
|
http->error = ETIMEDOUT;
|
|
|
return (-1);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
do
|
|
|
{
|
|
|
bytes = recv(http->fd, data, *dataLength, 0);
|
|
|
}
|
|
|
while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
|
|
|
|
|
|
if ((size_t)bytes == *dataLength)
|
|
|
{
|
|
|
result = 0;
|
|
|
}
|
|
|
else if (bytes > 0)
|
|
|
{
|
|
|
*dataLength = (size_t)bytes;
|
|
|
result = errSSLWouldBlock;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
*dataLength = 0;
|
|
|
|
|
|
if (bytes == 0)
|
|
|
result = errSSLClosedGraceful;
|
|
|
else if (errno == EAGAIN)
|
|
|
result = errSSLWouldBlock;
|
|
|
else
|
|
|
result = errSSLClosedAbort;
|
|
|
}
|
|
|
|
|
|
return (result);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_set_credentials()' - Set the TLS credentials.
|
|
|
*/
|
|
|
|
|
|
static int /* O - Status of connection */
|
|
|
http_cdsa_set_credentials(http_t *http) /* I - HTTP connection */
|
|
|
{
|
|
|
_cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
|
|
|
OSStatus error = 0; /* Error code */
|
|
|
http_tls_credentials_t credentials = NULL;
|
|
|
/* TLS credentials */
|
|
|
|
|
|
|
|
|
DEBUG_printf(("7http_tls_set_credentials(%p)", (void *)http));
|
|
|
|
|
|
/*
|
|
|
* Prefer connection specific credentials...
|
|
|
*/
|
|
|
|
|
|
if ((credentials = http->tls_credentials) == NULL)
|
|
|
credentials = cg->tls_credentials;
|
|
|
|
|
|
if (credentials)
|
|
|
{
|
|
|
error = SSLSetCertificate(http->tls, credentials);
|
|
|
DEBUG_printf(("4http_tls_set_credentials: SSLSetCertificate, error=%d",
|
|
|
(int)error));
|
|
|
}
|
|
|
else
|
|
|
DEBUG_puts("4http_tls_set_credentials: No credentials to set.");
|
|
|
|
|
|
return (error);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'http_cdsa_write()' - Write function for the CDSA library.
|
|
|
*/
|
|
|
|
|
|
static OSStatus /* O - -1 on error, 0 on success */
|
|
|
http_cdsa_write(
|
|
|
SSLConnectionRef connection, /* I - SSL/TLS connection */
|
|
|
const void *data, /* I - Data buffer */
|
|
|
size_t *dataLength) /* IO - Number of bytes */
|
|
|
{
|
|
|
OSStatus result; /* Return value */
|
|
|
ssize_t bytes; /* Number of bytes read */
|
|
|
http_t *http; /* HTTP connection */
|
|
|
|
|
|
|
|
|
http = (http_t *)connection;
|
|
|
|
|
|
do
|
|
|
{
|
|
|
bytes = write(http->fd, data, *dataLength);
|
|
|
}
|
|
|
while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
|
|
|
|
|
|
if ((size_t)bytes == *dataLength)
|
|
|
{
|
|
|
result = 0;
|
|
|
}
|
|
|
else if (bytes >= 0)
|
|
|
{
|
|
|
*dataLength = (size_t)bytes;
|
|
|
result = errSSLWouldBlock;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
*dataLength = 0;
|
|
|
|
|
|
if (errno == EAGAIN)
|
|
|
result = errSSLWouldBlock;
|
|
|
else
|
|
|
result = errSSLClosedAbort;
|
|
|
}
|
|
|
|
|
|
return (result);
|
|
|
}
|
