From 4b558a53f61005b0ca49665d2da92303f6e14872 Mon Sep 17 00:00:00 2001 From: Jonathan Beck Date: Mon, 4 Aug 2008 22:31:43 +0200 Subject: Store certificates and private keys as PEM files instead of storing them in config file. Added functions to generate proper pairing request. Signed-off-by: Matt Colyer --- src/initconf.c | 12 +---- src/lockdown.c | 35 ++++++++------ src/plist.c | 32 ++++++++++++- src/plist.h | 1 + src/userpref.c | 148 ++++++++++++++++++++++++++------------------------------- src/userpref.h | 29 +++++------ 6 files changed, 136 insertions(+), 121 deletions(-) (limited to 'src') diff --git a/src/initconf.c b/src/initconf.c index 7d6aa28..960fb6b 100644 --- a/src/initconf.c +++ b/src/initconf.c @@ -93,25 +93,15 @@ int main(int argc, char *argv[]) { gnutls_x509_crt_export (root_cert, GNUTLS_X509_FMT_PEM, root_cert_pem.data, &root_cert_pem.size); gnutls_x509_crt_export (host_cert, GNUTLS_X509_FMT_PEM, host_cert_pem.data, &host_cert_pem.size); - /* encode in base64 for storage */ - char* root_key_b64 = g_base64_encode (root_key_pem.data,root_key_pem.size); - char* host_key_b64 = g_base64_encode (host_key_pem.data,host_key_pem.size); - - char* root_cert_b64 = g_base64_encode (root_cert_pem.data,root_cert_pem.size); - char* host_cert_b64 = g_base64_encode (host_cert_pem.data,host_cert_pem.size); /* store values in config file */ - init_config_file(host_id, root_key_b64, host_key_b64, root_cert_b64, host_cert_b64); + init_config_file(host_id, &root_key_pem, &host_key_pem, &root_cert_pem, &host_cert_pem); gnutls_free(root_key_pem.data); gnutls_free(host_key_pem.data); gnutls_free(root_cert_pem.data); gnutls_free(host_cert_pem.data); - g_free(root_key_b64); - g_free(host_key_b64); - g_free(root_cert_b64); - g_free(host_cert_b64); return 0; } diff --git a/src/lockdown.c b/src/lockdown.c index d5149a9..095b2b4 100644 --- a/src/lockdown.c +++ b/src/lockdown.c @@ -263,8 +263,8 @@ int lockdownd_pair_device(lockdownd_client *control, char *public_key_b64, char /* Setup Pair request plist */ dict = add_child_to_plist(plist, "dict", "\n", NULL, 0); - add_key_str_dict_element(plist, dict, "Key", "PairRecord", 1); - dictRecord = add_child_to_plist(plist, "dict", "\n", NULL, 1); + dictRecord = add_key_dict_node(plist, dict, "PairRecord", "\n", 1); + //dictRecord = add_child_to_plist(plist, "dict", "\n", NULL, 1); add_key_data_dict_element(plist, dictRecord, "DeviceCertificate", device_cert_b64, 2); add_key_data_dict_element(plist, dictRecord, "HostCertificate", host_cert_b64, 2); add_key_str_dict_element(plist, dictRecord, "HostID", host_id, 2); @@ -273,6 +273,8 @@ int lockdownd_pair_device(lockdownd_client *control, char *public_key_b64, char xmlDocDumpMemory(plist, (xmlChar**)&XML_content, &length); + printf("XML Pairing request : %s\n",XML_content); + /* send to iPhone */ bytes = lockdownd_send(control, XML_content, length); @@ -366,34 +368,34 @@ int lockdownd_gen_pair_cert(char *public_key_b64, char **device_cert_b64, char * gnutls_datum_t essentially_null = {strdup("abababababababab"), strlen("abababababababab")}; gnutls_x509_privkey_t fake_privkey, root_privkey; - gnutls_x509_crt_t dev_cert, root_cert; + gnutls_x509_crt_t dev_cert, root_cert, host_cert; gnutls_x509_privkey_init(&fake_privkey); gnutls_x509_crt_init(&dev_cert); gnutls_x509_crt_init(&root_cert); + gnutls_x509_crt_init(&host_cert); if ( GNUTLS_E_SUCCESS == gnutls_x509_privkey_import_rsa_raw(fake_privkey, &modulus, &exponent, &essentially_null, &essentially_null, &essentially_null, &essentially_null) ) { gnutls_x509_privkey_init(&root_privkey); - /* get certificate stored in config */ - *host_cert_b64 = get_host_certificate(); - *root_cert_b64 = get_root_certificate(); - + /* get root cert */ gnutls_datum_t pem_root_cert = {NULL, 0}; - pem_root_cert.data = g_base64_decode (*root_cert_b64, &pem_root_cert.size); - + ret = get_root_certificate(&pem_root_cert); ret = gnutls_x509_crt_import (root_cert, &pem_root_cert, GNUTLS_X509_FMT_PEM); - gnutls_free(pem_root_cert.data); + + /* get host cert */ + gnutls_datum_t pem_host_cert = {NULL, 0}; + ret = get_host_certificate(&pem_host_cert); + ret = gnutls_x509_crt_import (host_cert, &pem_host_cert, GNUTLS_X509_FMT_PEM); + /* get root private key */ - char *root_priv_b64 = get_root_private_key(); gnutls_datum_t pem_root_priv = {NULL, 0}; - pem_root_priv.data = g_base64_decode (root_priv_b64, &pem_root_priv.size); - + ret = get_root_private_key(&pem_root_priv); ret = gnutls_x509_privkey_import (root_privkey, &pem_root_priv, GNUTLS_X509_FMT_PEM); - gnutls_free(pem_root_priv.data); + /* generate device certificate */ @@ -418,8 +420,13 @@ int lockdownd_gen_pair_cert(char *public_key_b64, char **device_cert_b64, char * /* now encode certificates for output */ *device_cert_b64 = g_base64_encode(dev_pem.data, dev_pem.size); + *host_cert_b64 = g_base64_encode(pem_host_cert.data, pem_host_cert.size); + *root_cert_b64 = g_base64_encode(pem_root_cert.data, pem_root_cert.size); ret = 1; } + gnutls_free(pem_root_priv.data); + gnutls_free(pem_root_cert.data); + gnutls_free(pem_host_cert.data); } } diff --git a/src/plist.c b/src/plist.c index 2d2a832..73cdffc 100644 --- a/src/plist.c +++ b/src/plist.c @@ -29,6 +29,29 @@ const char *plist_base = "\n\ \n\ \0"; +char* format_string(char* buf, int cols, int depth) +{ + int colw = depth + cols + 1; //new buf cols width + int len = strlen(buf); + //int nlines = ceil((float)len / (float)cols); + int nlines = len / cols + 1; + char* new_buf = (char*)malloc(nlines * colw + depth + 1); + int i = 0; + int j = 0; + for (i = 0; i < nlines; i++){ + new_buf[i * colw] = '\n'; + for (j = 0; j < depth; j++) + new_buf[i * colw + 1 + j] = '\t'; + memcpy(new_buf + i * colw + 1 + depth, buf + i * cols, cols); + } + new_buf[len+(1+depth)*nlines] = '\n'; + for (j = 0; j < depth; j++) + new_buf[len+(1+depth)*nlines + 1 + j] = '\t'; + new_buf[len+(1+depth)*nlines+depth+1] = '\0'; + free(buf); + return new_buf; +} + xmlDocPtr new_plist() { char *plist = strdup(plist_base); xmlDocPtr plist_xml = xmlReadMemory(plist, strlen(plist), NULL, NULL, 0); @@ -62,10 +85,17 @@ xmlNode *add_key_str_dict_element(xmlDocPtr plist, xmlNode *dict, const char *ke return keyPtr; } +xmlNode *add_key_dict_node(xmlDocPtr plist, xmlNode *dict, const char *key, const char *value, int depth) { + xmlNode *child; + add_child_to_plist(plist, "key", key, dict, depth); + child = add_child_to_plist(plist, "dict", value, dict, depth); + return child; +} + xmlNode *add_key_data_dict_element(xmlDocPtr plist, xmlNode *dict, const char *key, const char *value, int depth) { xmlNode *keyPtr; keyPtr = add_child_to_plist(plist, "key", key, dict, depth); - add_child_to_plist(plist, "data", value, dict, depth); + add_child_to_plist(plist, "data", format_string(value, 60, depth), dict, depth); return keyPtr; } diff --git a/src/plist.h b/src/plist.h index 64ff4d3..a2f558e 100644 --- a/src/plist.h +++ b/src/plist.h @@ -25,6 +25,7 @@ #include #include +xmlNode *add_key_dict_node(xmlDocPtr plist, xmlNode *dict, const char *key, const char *value, int depth); xmlNode *add_key_str_dict_element(xmlDocPtr plist, xmlNode *dict, const char *key, const char *value, int depth); xmlNode *add_key_data_dict_element(xmlDocPtr plist, xmlNode *dict, const char *key, const char *value, int depth); xmlNode *add_child_to_plist(xmlDocPtr plist, const char *name, const char *content, xmlNode *to_node, int depth); diff --git a/src/userpref.c b/src/userpref.c index f93cff4..12ff8f3 100644 --- a/src/userpref.c +++ b/src/userpref.c @@ -24,9 +24,16 @@ #include #include "userpref.h" + #define LIBIPHONE_CONF_DIR "libiphone" #define LIBIPHONE_CONF_FILE "libiphonerc" +#define LIBIPHONE_ROOT_PRIVKEY "RootPrivateKey.pem" +#define LIBIPHONE_HOST_PRIVKEY "HostPrivateKey.pem" +#define LIBIPHONE_ROOT_CERTIF "RootCertificate.pem" +#define LIBIPHONE_HOST_CERTIF "HostCertificate.pem" + + extern int debug; inline void create_config_dir() { @@ -145,99 +152,59 @@ int store_device_public_key(char* public_key) return 1; } - -char* get_root_private_key() +int read_file_in_confdir(char* file, gnutls_datum_t* data) { - char* private_key = NULL; - - /* first get config file */ - gchar* config_file = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_CONF_FILE, NULL); - if (g_file_test(config_file, (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))) { - - /* now parse file to get knwon devices list */ - GKeyFile* key_file = g_key_file_new (); - if( g_key_file_load_from_file (key_file, config_file, G_KEY_FILE_KEEP_COMMENTS, NULL) ) { + if (NULL == file || NULL == data) + return 0; - gchar* loc_private_key = g_key_file_get_value(key_file, "Global", "RootPrivateKey", NULL); - if (loc_private_key) - private_key = strdup((char*)loc_private_key); - g_free(loc_private_key); - } - g_key_file_free(key_file); + gchar* filepath = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, file, NULL); + if (g_file_test(filepath, (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))) { + + FILE * pFile; + long lSize; + + pFile = fopen ( filepath , "rb" ); + if (pFile==NULL) + return 0; + + fseek (pFile , 0 , SEEK_END); + data->size = ftell (pFile); + rewind (pFile); + + data->data = (char*)gnutls_malloc(data->size); + if (data->data == NULL) + return 0; + + // copy the file into the buffer: + fread (data->data,1,data->size,pFile); + fclose (pFile); } - return private_key; + return 1; } -char* get_host_private_key() +int get_root_private_key(gnutls_datum_t* root_privkey) { - char* private_key = NULL; - - /* first get config file */ - gchar* config_file = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_CONF_FILE, NULL); - if (g_file_test(config_file, (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))) { - - /* now parse file to get knwon devices list */ - GKeyFile* key_file = g_key_file_new (); - if( g_key_file_load_from_file (key_file, config_file, G_KEY_FILE_KEEP_COMMENTS, NULL) ) { - - gchar* loc_private_key = g_key_file_get_value(key_file, "Global", "HostPrivateKey", NULL); - if (loc_private_key) - private_key = strdup((char*)loc_private_key); - g_free(loc_private_key); - } - g_key_file_free(key_file); - } - return private_key; + return read_file_in_confdir(LIBIPHONE_ROOT_PRIVKEY, root_privkey); } - -char* get_root_certificate() +int get_host_private_key(gnutls_datum_t* host_privkey) { - char* cert = NULL; - - /* first get config file */ - gchar* config_file = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_CONF_FILE, NULL); - if (g_file_test(config_file, (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))) { - - /* now parse file to get knwon devices list */ - GKeyFile* key_file = g_key_file_new (); - if( g_key_file_load_from_file (key_file, config_file, G_KEY_FILE_KEEP_COMMENTS, NULL) ) { - - gchar* loc_cert = g_key_file_get_value(key_file, "Global", "RootCertificate", NULL); - if (loc_cert) - cert = strdup((char*)loc_cert); - g_free(loc_cert); - } - g_key_file_free(key_file); - } - return cert; + return read_file_in_confdir(LIBIPHONE_HOST_PRIVKEY, host_privkey); } -char* get_host_certificate() +int get_root_certificate(gnutls_datum_t* root_cert) { - char* cert = NULL; - - /* first get config file */ - gchar* config_file = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_CONF_FILE, NULL); - if (g_file_test(config_file, (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))) { - - /* now parse file to get knwon devices list */ - GKeyFile* key_file = g_key_file_new (); - if( g_key_file_load_from_file (key_file, config_file, G_KEY_FILE_KEEP_COMMENTS, NULL) ) { + return read_file_in_confdir(LIBIPHONE_ROOT_CERTIF, root_cert); +} - gchar* loc_cert = g_key_file_get_value(key_file, "Global", "HostCertificate", NULL); - if (loc_cert) - cert = strdup((char*)loc_cert); - g_free(loc_cert); - } - g_key_file_free(key_file); - } - return cert; +int get_host_certificate(gnutls_datum_t* host_cert) +{ + return read_file_in_confdir(LIBIPHONE_HOST_CERTIF, host_cert); } -int init_config_file(char* host_id, char* root_private_key, char* host_private_key, char* root_cert, char* host_cert) +int init_config_file(char* host_id, gnutls_datum_t* root_key, gnutls_datum_t* host_key, gnutls_datum_t* root_cert, gnutls_datum_t* host_cert) { - if (!host_id || !root_private_key || !host_private_key || !root_cert || !host_cert) + if (!host_id || !root_key || !host_key || !root_cert || !host_cert) return 0; gchar* config_file = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_CONF_FILE, NULL); @@ -249,10 +216,6 @@ int init_config_file(char* host_id, char* root_private_key, char* host_private_k /* store in config file */ g_key_file_set_value (key_file, "Global", "HostID", host_id); - g_key_file_set_value (key_file, "Global", "RootPrivateKey", root_private_key); - g_key_file_set_value (key_file, "Global", "HostPrivateKey", host_private_key); - g_key_file_set_value (key_file, "Global", "RootCertificate", root_cert); - g_key_file_set_value (key_file, "Global", "HostCertificate", host_cert); /* write config file on disk */ gsize length; @@ -263,5 +226,28 @@ int init_config_file(char* host_id, char* root_private_key, char* host_private_k g_key_file_free(key_file); + //now write keys and certifs to disk + FILE * pFile; + gchar* pem; + pem = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_ROOT_PRIVKEY, NULL); + pFile = fopen ( pem , "wb" ); + fwrite ( root_key->data, 1 , root_key->size , pFile ); + fclose (pFile); + + pem = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_HOST_PRIVKEY, NULL); + pFile = fopen ( pem , "wb" ); + fwrite ( host_key->data, 1 , host_key->size , pFile ); + fclose (pFile); + + pem = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_ROOT_CERTIF, NULL); + pFile = fopen ( pem , "wb" ); + fwrite ( root_cert->data, 1 , root_cert->size , pFile ); + fclose (pFile); + + pem = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, LIBIPHONE_HOST_CERTIF, NULL); + pFile = fopen ( pem , "wb" ); + fwrite ( host_cert->data, 1 , host_cert->size , pFile ); + fclose (pFile); + return 1; } diff --git a/src/userpref.h b/src/userpref.h index cef0bed..441c7be 100644 --- a/src/userpref.h +++ b/src/userpref.h @@ -22,6 +22,7 @@ #ifndef USERPREF_H #define USERPREF_H +#include /** * \fn char* get_host_id() * method to get user's HostID. Caller must free returned buffer. @@ -43,34 +44,34 @@ int is_device_known(char* public_key); int store_device_public_key(char* public_key); /** -* \fn char* get_root_private_key() -* \return RootPrivateKey if exists. Returns NULL otherwise. +* \fn int get_root_private_key(gnutls_datum_t* root_privkey) +* \return 1 if everything went well. Returns 0 otherwise. */ -char* get_root_private_key(); +int get_root_private_key(gnutls_datum_t* root_privkey); /** -* \fn char* get_host_private_key() -* \return HostPrivateKey if exists. Returns NULL otherwise. +* \fn int get_host_private_key(gnutls_datum_t* host_privkey) +* \return 1 if everything went well. Returns 0 otherwise. */ -char* get_host_private_key(); +int get_host_private_key(gnutls_datum_t* host_privkey); /** -* \fn char* get_root_certificate() -* \return RootCertificate if exists. Returns NULL otherwise. +* \fn int get_root_certificate(gnutls_datum_t* root_cert) +* \return 1 if everything went well. Returns 0 otherwise. */ -char* get_root_certificate(); +int get_root_certificate(gnutls_datum_t* root_cert); /** -* \fn char* get_host_certificate() -* \return HostCertificate if exists. Returns NULL otherwise. +* \fn int get_host_certificate(gnutls_datum_t* host_cert) +* \return 1 if everything went well. Returns 0 otherwise. */ -char* get_host_certificate(); +int get_host_certificate(gnutls_datum_t* host_cert); /** -* \fn int init_config_file(char* host_id, char* root_private_key, char* host_private_key, char* root_cert, char* host_cert) +* \fn int init_config_file(char* host_id, gnutls_datum_t* root_key, gnutls_datum_t* host_key, gnutls_datum_t* root_cert, gnutls_datum_t* host_cert) * setup a brand new config file. * \return 1 if everything went well. Returns 0 otherwise. */ -int init_config_file(char* host_id, char* root_private_key, char* host_private_key, char* root_cert, char* host_cert); +int init_config_file(char* host_id, gnutls_datum_t* root_key, gnutls_datum_t* host_key, gnutls_datum_t* root_cert, gnutls_datum_t* host_cert); #endif -- cgit v1.1-32-gdbae