| /* |
| * SSL data transfer functions between buffers and SOCK_STREAM sockets |
| * |
| * Copyright (C) 2012 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Acknowledgement: |
| * We'd like to specially thank the Stud project authors for a very clean |
| * and well documented code which helped us understand how the OpenSSL API |
| * ought to be used in non-blocking mode. This is one difficult part which |
| * is not easy to get from the OpenSSL doc, and reading the Stud code made |
| * it much more obvious than the examples in the OpenSSL package. Keep up |
| * the good works, guys ! |
| * |
| * Stud is an extremely efficient and scalable SSL/TLS proxy which combines |
| * particularly well with haproxy. For more info about this project, visit : |
| * https://github.com/bumptech/stud |
| * |
| */ |
| |
| #define _GNU_SOURCE |
| #include <ctype.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| |
| #include <netinet/tcp.h> |
| |
| #include <openssl/ssl.h> |
| #include <openssl/x509.h> |
| #include <openssl/x509v3.h> |
| #include <openssl/x509.h> |
| #include <openssl/err.h> |
| |
| #include <common/buffer.h> |
| #include <common/compat.h> |
| #include <common/config.h> |
| #include <common/debug.h> |
| #include <common/errors.h> |
| #include <common/standard.h> |
| #include <common/ticks.h> |
| #include <common/time.h> |
| |
| #include <ebsttree.h> |
| |
| #include <types/global.h> |
| #include <types/ssl_sock.h> |
| |
| #include <proto/acl.h> |
| #include <proto/arg.h> |
| #include <proto/connection.h> |
| #include <proto/fd.h> |
| #include <proto/freq_ctr.h> |
| #include <proto/frontend.h> |
| #include <proto/listener.h> |
| #include <proto/log.h> |
| #include <proto/shctx.h> |
| #include <proto/ssl_sock.h> |
| #include <proto/task.h> |
| |
| #define SSL_SOCK_ST_FL_VERIFY_DONE 0x00000001 |
| /* bits 0xFFFF0000 are reserved to store verify errors */ |
| |
| /* Verify errors macros */ |
| #define SSL_SOCK_CA_ERROR_TO_ST(e) (((e > 63) ? 63 : e) << (16)) |
| #define SSL_SOCK_CAEDEPTH_TO_ST(d) (((d > 15) ? 15 : d) << (6+16)) |
| #define SSL_SOCK_CRTERROR_TO_ST(e) (((e > 63) ? 63 : e) << (4+6+16)) |
| |
| #define SSL_SOCK_ST_TO_CA_ERROR(s) ((s >> (16)) & 63) |
| #define SSL_SOCK_ST_TO_CAEDEPTH(s) ((s >> (6+16)) & 15) |
| #define SSL_SOCK_ST_TO_CRTERROR(s) ((s >> (4+6+16)) & 63) |
| |
| static int sslconns = 0; |
| |
| void ssl_sock_infocbk(const SSL *ssl, int where, int ret) |
| { |
| struct connection *conn = (struct connection *)SSL_get_app_data(ssl); |
| (void)ret; /* shut gcc stupid warning */ |
| |
| if (where & SSL_CB_HANDSHAKE_START) { |
| /* Disable renegotiation (CVE-2009-3555) */ |
| if (conn->flags & CO_FL_CONNECTED) |
| conn->flags |= CO_FL_ERROR; |
| } |
| } |
| |
| /* Callback is called for each certificate of the chain during a verify |
| ok is set to 1 if preverify detect no error on current certificate. |
| Returns 0 to break the handshake, 1 otherwise. */ |
| int ssl_sock_verifycbk(int ok, X509_STORE_CTX *x_store) |
| { |
| SSL *ssl; |
| struct connection *conn; |
| int err, depth; |
| |
| ssl = X509_STORE_CTX_get_ex_data(x_store, SSL_get_ex_data_X509_STORE_CTX_idx()); |
| conn = (struct connection *)SSL_get_app_data(ssl); |
| |
| conn->data_st |= SSL_SOCK_ST_FL_VERIFY_DONE; |
| |
| if (ok) /* no errors */ |
| return ok; |
| |
| depth = X509_STORE_CTX_get_error_depth(x_store); |
| err = X509_STORE_CTX_get_error(x_store); |
| |
| /* check if CA error needs to be ignored */ |
| if (depth > 0) { |
| if (!SSL_SOCK_ST_TO_CA_ERROR(conn->data_st)) { |
| conn->data_st |= SSL_SOCK_CA_ERROR_TO_ST(err); |
| conn->data_st |= SSL_SOCK_CAEDEPTH_TO_ST(depth); |
| } |
| |
| if (target_client(&conn->target)->bind_conf->ca_ignerr & (1ULL << err)) |
| return 1; |
| |
| return 0; |
| } |
| |
| if (!SSL_SOCK_ST_TO_CRTERROR(conn->data_st)) |
| conn->data_st |= SSL_SOCK_CRTERROR_TO_ST(err); |
| |
| /* check if certificate error needs to be ignored */ |
| if (target_client(&conn->target)->bind_conf->crt_ignerr & (1ULL << err)) |
| return 1; |
| |
| return 0; |
| } |
| |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| /* Sets the SSL ctx of <ssl> to match the advertised server name. Returns a |
| * warning when no match is found, which implies the default (first) cert |
| * will keep being used. |
| */ |
| static int ssl_sock_switchctx_cbk(SSL *ssl, int *al, struct bind_conf *s) |
| { |
| const char *servername; |
| const char *wildp = NULL; |
| struct ebmb_node *node; |
| int i; |
| (void)al; /* shut gcc stupid warning */ |
| |
| servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name); |
| if (!servername) |
| return SSL_TLSEXT_ERR_NOACK; |
| |
| for (i = 0; i < trashlen; i++) { |
| if (!servername[i]) |
| break; |
| trash[i] = tolower(servername[i]); |
| if (!wildp && (trash[i] == '.')) |
| wildp = &trash[i]; |
| } |
| trash[i] = 0; |
| |
| /* lookup in full qualified names */ |
| node = ebst_lookup(&s->sni_ctx, trash); |
| if (!node) { |
| if (!wildp) |
| return SSL_TLSEXT_ERR_ALERT_WARNING; |
| |
| /* lookup in full wildcards names */ |
| node = ebst_lookup(&s->sni_w_ctx, wildp); |
| if (!node) |
| return SSL_TLSEXT_ERR_ALERT_WARNING; |
| } |
| |
| /* switch ctx */ |
| SSL_set_SSL_CTX(ssl, container_of(node, struct sni_ctx, name)->ctx); |
| return SSL_TLSEXT_ERR_OK; |
| } |
| #endif /* SSL_CTRL_SET_TLSEXT_HOSTNAME */ |
| |
| #ifndef OPENSSL_NO_DH |
| /* Loads Diffie-Hellman parameter from a file. Returns 1 if loaded, else -1 |
| if an error occured, and 0 if parameter not found. */ |
| int ssl_sock_load_dh_params(SSL_CTX *ctx, const char *file) |
| { |
| int ret = -1; |
| BIO *in; |
| DH *dh = NULL; |
| |
| in = BIO_new(BIO_s_file()); |
| if (in == NULL) |
| goto end; |
| |
| if (BIO_read_filename(in, file) <= 0) |
| goto end; |
| |
| dh = PEM_read_bio_DHparams(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_userdata); |
| if (dh) { |
| SSL_CTX_set_tmp_dh(ctx, dh); |
| ret = 1; |
| goto end; |
| } |
| |
| ret = 0; /* DH params not found */ |
| end: |
| if (dh) |
| DH_free(dh); |
| |
| if (in) |
| BIO_free(in); |
| |
| return ret; |
| } |
| #endif |
| |
| /* Loads a certificate key and CA chain from a file. Returns 0 on error, -1 if |
| * an early error happens and the caller must call SSL_CTX_free() by itelf. |
| */ |
| int ssl_sock_load_cert_chain_file(SSL_CTX *ctx, const char *file, struct bind_conf *s) |
| { |
| BIO *in; |
| X509 *x = NULL, *ca; |
| int i, len, err; |
| int ret = -1; |
| int order = 0; |
| X509_NAME *xname; |
| char *str; |
| struct sni_ctx *sc; |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| STACK_OF(GENERAL_NAME) *names; |
| #endif |
| |
| in = BIO_new(BIO_s_file()); |
| if (in == NULL) |
| goto end; |
| |
| if (BIO_read_filename(in, file) <= 0) |
| goto end; |
| |
| x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_userdata); |
| if (x == NULL) |
| goto end; |
| |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| names = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); |
| if (names) { |
| for (i = 0; i < sk_GENERAL_NAME_num(names); i++) { |
| GENERAL_NAME *name = sk_GENERAL_NAME_value(names, i); |
| if (name->type == GEN_DNS) { |
| if (ASN1_STRING_to_UTF8((unsigned char **)&str, name->d.dNSName) >= 0) { |
| if ((len = strlen(str))) { |
| int j; |
| |
| if (*str != '*') { |
| sc = malloc(sizeof(struct sni_ctx) + len + 1); |
| for (j = 0; j < len; j++) |
| sc->name.key[j] = tolower(str[j]); |
| sc->name.key[len] = 0; |
| sc->order = order++; |
| sc->ctx = ctx; |
| ebst_insert(&s->sni_ctx, &sc->name); |
| } |
| else { |
| sc = malloc(sizeof(struct sni_ctx) + len); |
| for (j = 1; j < len; j++) |
| sc->name.key[j-1] = tolower(str[j]); |
| sc->name.key[len-1] = 0; |
| sc->order = order++; |
| sc->ctx = ctx; |
| ebst_insert(&s->sni_w_ctx, &sc->name); |
| } |
| } |
| OPENSSL_free(str); |
| } |
| } |
| } |
| sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free); |
| } |
| #endif /* SSL_CTRL_SET_TLSEXT_HOSTNAME */ |
| |
| xname = X509_get_subject_name(x); |
| i = -1; |
| while ((i = X509_NAME_get_index_by_NID(xname, NID_commonName, i)) != -1) { |
| X509_NAME_ENTRY *entry = X509_NAME_get_entry(xname, i); |
| if (ASN1_STRING_to_UTF8((unsigned char **)&str, entry->value) >= 0) { |
| if ((len = strlen(str))) { |
| int j; |
| |
| if (*str != '*') { |
| sc = malloc(sizeof(struct sni_ctx) + len + 1); |
| for (j = 0; j < len; j++) |
| sc->name.key[j] = tolower(str[j]); |
| sc->name.key[len] = 0; |
| sc->order = order++; |
| sc->ctx = ctx; |
| ebst_insert(&s->sni_ctx, &sc->name); |
| } |
| else { |
| sc = malloc(sizeof(struct sni_ctx) + len); |
| for (j = 1; j < len; j++) |
| sc->name.key[j-1] = tolower(str[j]); |
| sc->name.key[len-1] = 0; |
| sc->order = order++; |
| sc->ctx = ctx; |
| ebst_insert(&s->sni_w_ctx, &sc->name); |
| } |
| } |
| OPENSSL_free(str); |
| } |
| } |
| |
| ret = 0; /* the caller must not free the SSL_CTX argument anymore */ |
| if (!SSL_CTX_use_certificate(ctx, x)) |
| goto end; |
| |
| if (ctx->extra_certs != NULL) { |
| sk_X509_pop_free(ctx->extra_certs, X509_free); |
| ctx->extra_certs = NULL; |
| } |
| |
| while ((ca = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_userdata))) { |
| if (!SSL_CTX_add_extra_chain_cert(ctx, ca)) { |
| X509_free(ca); |
| goto end; |
| } |
| } |
| |
| err = ERR_get_error(); |
| if (!err || (ERR_GET_LIB(err) == ERR_LIB_PEM && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)) { |
| /* we successfully reached the last cert in the file */ |
| ret = 1; |
| } |
| ERR_clear_error(); |
| |
| end: |
| if (x) |
| X509_free(x); |
| |
| if (in) |
| BIO_free(in); |
| |
| return ret; |
| } |
| |
| static int ssl_sock_load_cert_file(const char *path, struct bind_conf *bind_conf, struct proxy *curproxy, char **err) |
| { |
| int ret; |
| SSL_CTX *ctx; |
| |
| ctx = SSL_CTX_new(SSLv23_server_method()); |
| if (!ctx) { |
| memprintf(err, "%sunable to allocate SSL context for cert '%s'.\n", |
| err && *err ? *err : "", path); |
| return 1; |
| } |
| |
| if (SSL_CTX_use_PrivateKey_file(ctx, path, SSL_FILETYPE_PEM) <= 0) { |
| memprintf(err, "%sunable to load SSL private key from PEM file '%s'.\n", |
| err && *err ? *err : "", path); |
| SSL_CTX_free(ctx); |
| return 1; |
| } |
| |
| ret = ssl_sock_load_cert_chain_file(ctx, path, bind_conf); |
| if (ret <= 0) { |
| memprintf(err, "%sunable to load SSL certificate from PEM file '%s'.\n", |
| err && *err ? *err : "", path); |
| if (ret < 0) /* serious error, must do that ourselves */ |
| SSL_CTX_free(ctx); |
| return 1; |
| } |
| /* we must not free the SSL_CTX anymore below, since it's already in |
| * the tree, so it will be discovered and cleaned in time. |
| */ |
| #ifndef OPENSSL_NO_DH |
| ret = ssl_sock_load_dh_params(ctx, path); |
| if (ret < 0) { |
| if (err) |
| memprintf(err, "%sunable to load DH parameters from file '%s'.\n", |
| *err ? *err : "", path); |
| return 1; |
| } |
| #endif |
| |
| #ifndef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| if (bind_conf->default_ctx) { |
| memprintf(err, "%sthis version of openssl cannot load multiple SSL certificates.\n", |
| err && *err ? *err : ""); |
| return 1; |
| } |
| #endif |
| if (!bind_conf->default_ctx) |
| bind_conf->default_ctx = ctx; |
| |
| return 0; |
| } |
| |
| int ssl_sock_load_cert(char *path, struct bind_conf *bind_conf, struct proxy *curproxy, char **err) |
| { |
| struct dirent *de; |
| DIR *dir; |
| struct stat buf; |
| int pathlen = 0; |
| char *end, *fp; |
| int cfgerr = 0; |
| |
| if (!(dir = opendir(path))) |
| return ssl_sock_load_cert_file(path, bind_conf, curproxy, err); |
| |
| /* strip trailing slashes, including first one */ |
| for (end = path + strlen(path) - 1; end >= path && *end == '/'; end--) |
| *end = 0; |
| |
| if (end >= path) |
| pathlen = end + 1 - path; |
| fp = malloc(pathlen + 1 + NAME_MAX + 1); |
| |
| while ((de = readdir(dir))) { |
| snprintf(fp, pathlen + 1 + NAME_MAX + 1, "%s/%s", path, de->d_name); |
| if (stat(fp, &buf) != 0) { |
| memprintf(err, "%sunable to stat SSL certificate from file '%s' : %s.\n", |
| err && *err ? *err : "", fp, strerror(errno)); |
| cfgerr++; |
| continue; |
| } |
| if (!S_ISREG(buf.st_mode)) |
| continue; |
| cfgerr += ssl_sock_load_cert_file(fp, bind_conf, curproxy, err); |
| } |
| free(fp); |
| closedir(dir); |
| return cfgerr; |
| } |
| |
| #ifndef SSL_OP_CIPHER_SERVER_PREFERENCE /* needs OpenSSL >= 0.9.7 */ |
| #define SSL_OP_CIPHER_SERVER_PREFERENCE 0 |
| #endif |
| |
| #ifndef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION /* needs OpenSSL >= 0.9.7 */ |
| #define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0 |
| #endif |
| #ifndef SSL_OP_SINGLE_ECDH_USE /* needs OpenSSL >= 0.9.8 */ |
| #define SSL_OP_SINGLE_ECDH_USE 0 |
| #endif |
| #ifndef SSL_OP_NO_TICKET /* needs OpenSSL >= 0.9.8 */ |
| #define SSL_OP_NO_TICKET 0 |
| #endif |
| #ifndef SSL_OP_NO_COMPRESSION /* needs OpenSSL >= 0.9.9 */ |
| #define SSL_OP_NO_COMPRESSION 0 |
| #endif |
| #ifndef SSL_OP_NO_TLSv1_1 /* needs OpenSSL >= 1.0.1 */ |
| #define SSL_OP_NO_TLSv1_1 0 |
| #endif |
| #ifndef SSL_OP_NO_TLSv1_2 /* needs OpenSSL >= 1.0.1 */ |
| #define SSL_OP_NO_TLSv1_2 0 |
| #endif |
| #ifndef SSL_OP_SINGLE_DH_USE /* needs OpenSSL >= 0.9.6 */ |
| #define SSL_OP_SINGLE_DH_USE 0 |
| #endif |
| #ifndef SSL_OP_SINGLE_ECDH_USE /* needs OpenSSL >= 1.0.0 */ |
| #define SSL_OP_SINGLE_ECDH_USE 0 |
| #endif |
| #ifndef SSL_MODE_RELEASE_BUFFERS /* needs OpenSSL >= 1.0.0 */ |
| #define SSL_MODE_RELEASE_BUFFERS 0 |
| #endif |
| int ssl_sock_prepare_ctx(struct bind_conf *bind_conf, SSL_CTX *ctx, struct proxy *curproxy) |
| { |
| int cfgerr = 0; |
| int ssloptions = |
| SSL_OP_ALL | /* all known workarounds for bugs */ |
| SSL_OP_NO_SSLv2 | |
| SSL_OP_NO_COMPRESSION | |
| SSL_OP_SINGLE_DH_USE | |
| SSL_OP_SINGLE_ECDH_USE | |
| SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION; |
| int sslmode = |
| SSL_MODE_ENABLE_PARTIAL_WRITE | |
| SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER | |
| SSL_MODE_RELEASE_BUFFERS; |
| |
| if (bind_conf->nosslv3) |
| ssloptions |= SSL_OP_NO_SSLv3; |
| if (bind_conf->notlsv10) |
| ssloptions |= SSL_OP_NO_TLSv1; |
| if (bind_conf->notlsv11) |
| ssloptions |= SSL_OP_NO_TLSv1_1; |
| if (bind_conf->notlsv12) |
| ssloptions |= SSL_OP_NO_TLSv1_2; |
| if (bind_conf->no_tls_tickets) |
| ssloptions |= SSL_OP_NO_TICKET; |
| if (bind_conf->prefer_server_ciphers) |
| ssloptions |= SSL_OP_CIPHER_SERVER_PREFERENCE; |
| |
| SSL_CTX_set_options(ctx, ssloptions); |
| SSL_CTX_set_mode(ctx, sslmode); |
| SSL_CTX_set_verify(ctx, bind_conf->verify ? bind_conf->verify : SSL_VERIFY_NONE, ssl_sock_verifycbk); |
| if (bind_conf->verify & SSL_VERIFY_PEER) { |
| if (bind_conf->cafile) { |
| /* load CAfile to verify */ |
| if (!SSL_CTX_load_verify_locations(ctx, bind_conf->cafile, NULL)) { |
| Alert("Proxy '%s': unable to load CA file '%s' for bind '%s' at [%s:%d].\n", |
| curproxy->id, bind_conf->cafile, bind_conf->arg, bind_conf->file, bind_conf->line); |
| cfgerr++; |
| } |
| /* set CA names fo client cert request, function returns void */ |
| SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(bind_conf->cafile)); |
| } |
| |
| if (bind_conf->crlfile) { |
| X509_STORE *store = SSL_CTX_get_cert_store(ctx); |
| |
| if (!store || !X509_STORE_load_locations(store, bind_conf->crlfile, NULL)) { |
| Alert("Proxy '%s': unable to configure CRL file '%s' for bind '%s' at [%s:%d].\n", |
| curproxy->id, bind_conf->cafile, bind_conf->arg, bind_conf->file, bind_conf->line); |
| cfgerr++; |
| } |
| else { |
| X509_STORE_set_flags(store, X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL); |
| } |
| } |
| } |
| |
| shared_context_set_cache(ctx); |
| if (bind_conf->ciphers && |
| !SSL_CTX_set_cipher_list(ctx, bind_conf->ciphers)) { |
| Alert("Proxy '%s': unable to set SSL cipher list to '%s' for bind '%s' at [%s:%d].\n", |
| curproxy->id, bind_conf->ciphers, bind_conf->arg, bind_conf->file, bind_conf->line); |
| cfgerr++; |
| } |
| |
| SSL_CTX_set_info_callback(ctx, ssl_sock_infocbk); |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| SSL_CTX_set_tlsext_servername_callback(ctx, ssl_sock_switchctx_cbk); |
| SSL_CTX_set_tlsext_servername_arg(ctx, bind_conf); |
| #endif |
| #if defined(SSL_CTX_set_tmp_ecdh) && !defined(OPENSSL_NO_ECDH) |
| if (bind_conf->ecdhe) { |
| int i; |
| EC_KEY *ecdh; |
| |
| i = OBJ_sn2nid(bind_conf->ecdhe); |
| if (!i || ((ecdh = EC_KEY_new_by_curve_name(i)) == NULL)) { |
| Alert("Proxy '%s': unable to set elliptic named curve to '%s' for bind '%s' at [%s:%d].\n", |
| curproxy->id, bind_conf->ecdhe, bind_conf->arg, bind_conf->file, bind_conf->line); |
| cfgerr++; |
| } |
| else { |
| SSL_CTX_set_tmp_ecdh(ctx, ecdh); |
| EC_KEY_free(ecdh); |
| } |
| } |
| #endif |
| |
| return cfgerr; |
| } |
| |
| /* Walks down the two trees in bind_conf and prepares all certs. The pointer may |
| * be NULL, in which case nothing is done. Returns the number of errors |
| * encountered. |
| */ |
| int ssl_sock_prepare_all_ctx(struct bind_conf *bind_conf, struct proxy *px) |
| { |
| struct ebmb_node *node; |
| struct sni_ctx *sni; |
| int err = 0; |
| |
| if (!bind_conf || !bind_conf->is_ssl) |
| return 0; |
| |
| node = ebmb_first(&bind_conf->sni_ctx); |
| while (node) { |
| sni = ebmb_entry(node, struct sni_ctx, name); |
| if (!sni->order) /* only initialize the CTX on its first occurrence */ |
| err += ssl_sock_prepare_ctx(bind_conf, sni->ctx, px); |
| node = ebmb_next(node); |
| } |
| |
| node = ebmb_first(&bind_conf->sni_w_ctx); |
| while (node) { |
| sni = ebmb_entry(node, struct sni_ctx, name); |
| if (!sni->order) /* only initialize the CTX on its first occurrence */ |
| err += ssl_sock_prepare_ctx(bind_conf, sni->ctx, px); |
| node = ebmb_next(node); |
| } |
| return err; |
| } |
| |
| /* Walks down the two trees in bind_conf and frees all the certs. The pointer may |
| * be NULL, in which case nothing is done. The default_ctx is nullified too. |
| */ |
| void ssl_sock_free_all_ctx(struct bind_conf *bind_conf) |
| { |
| struct ebmb_node *node, *back; |
| struct sni_ctx *sni; |
| |
| if (!bind_conf || !bind_conf->is_ssl) |
| return; |
| |
| node = ebmb_first(&bind_conf->sni_ctx); |
| while (node) { |
| sni = ebmb_entry(node, struct sni_ctx, name); |
| back = ebmb_next(node); |
| ebmb_delete(node); |
| if (!sni->order) /* only free the CTX on its first occurrence */ |
| SSL_CTX_free(sni->ctx); |
| free(sni); |
| node = back; |
| } |
| |
| node = ebmb_first(&bind_conf->sni_w_ctx); |
| while (node) { |
| sni = ebmb_entry(node, struct sni_ctx, name); |
| back = ebmb_next(node); |
| ebmb_delete(node); |
| if (!sni->order) /* only free the CTX on its first occurrence */ |
| SSL_CTX_free(sni->ctx); |
| free(sni); |
| node = back; |
| } |
| |
| bind_conf->default_ctx = NULL; |
| } |
| |
| /* |
| * This function is called if SSL * context is not yet allocated. The function |
| * is designed to be called before any other data-layer operation and sets the |
| * handshake flag on the connection. It is safe to call it multiple times. |
| * It returns 0 on success and -1 in error case. |
| */ |
| static int ssl_sock_init(struct connection *conn) |
| { |
| /* already initialized */ |
| if (conn->data_ctx) |
| return 0; |
| |
| if (global.maxsslconn && sslconns >= global.maxsslconn) |
| return -1; |
| |
| /* If it is in client mode initiate SSL session |
| in connect state otherwise accept state */ |
| if (target_srv(&conn->target)) { |
| /* Alloc a new SSL session ctx */ |
| conn->data_ctx = SSL_new(target_srv(&conn->target)->ssl_ctx.ctx); |
| if (!conn->data_ctx) |
| return -1; |
| |
| SSL_set_connect_state(conn->data_ctx); |
| if (target_srv(&conn->target)->ssl_ctx.reused_sess) |
| SSL_set_session(conn->data_ctx, target_srv(&conn->target)->ssl_ctx.reused_sess); |
| |
| /* set fd on SSL session context */ |
| SSL_set_fd(conn->data_ctx, conn->t.sock.fd); |
| |
| /* leave init state and start handshake */ |
| conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN; |
| |
| sslconns++; |
| return 0; |
| } |
| else if (target_client(&conn->target)) { |
| /* Alloc a new SSL session ctx */ |
| conn->data_ctx = SSL_new(target_client(&conn->target)->bind_conf->default_ctx); |
| if (!conn->data_ctx) |
| return -1; |
| |
| SSL_set_accept_state(conn->data_ctx); |
| |
| /* set fd on SSL session context */ |
| SSL_set_fd(conn->data_ctx, conn->t.sock.fd); |
| |
| /* set connection pointer */ |
| SSL_set_app_data(conn->data_ctx, conn); |
| |
| /* leave init state and start handshake */ |
| conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN; |
| |
| sslconns++; |
| return 0; |
| } |
| /* don't know how to handle such a target */ |
| return -1; |
| } |
| |
| |
| /* This is the callback which is used when an SSL handshake is pending. It |
| * updates the FD status if it wants some polling before being called again. |
| * It returns 0 if it fails in a fatal way or needs to poll to go further, |
| * otherwise it returns non-zero and removes itself from the connection's |
| * flags (the bit is provided in <flag> by the caller). |
| */ |
| int ssl_sock_handshake(struct connection *conn, unsigned int flag) |
| { |
| int ret; |
| |
| if (!conn->data_ctx) |
| goto out_error; |
| |
| ret = SSL_do_handshake(conn->data_ctx); |
| if (ret != 1) { |
| /* handshake did not complete, let's find why */ |
| ret = SSL_get_error(conn->data_ctx, ret); |
| |
| if (ret == SSL_ERROR_WANT_WRITE) { |
| /* SSL handshake needs to write, L4 connection may not be ready */ |
| __conn_sock_stop_recv(conn); |
| __conn_sock_poll_send(conn); |
| return 0; |
| } |
| else if (ret == SSL_ERROR_WANT_READ) { |
| /* SSL handshake needs to read, L4 connection is ready */ |
| if (conn->flags & CO_FL_WAIT_L4_CONN) |
| conn->flags &= ~CO_FL_WAIT_L4_CONN; |
| __conn_sock_stop_send(conn); |
| __conn_sock_poll_recv(conn); |
| return 0; |
| } |
| else { |
| /* Fail on all other handshake errors */ |
| goto out_error; |
| } |
| } |
| |
| /* Handshake succeeded */ |
| if (target_srv(&conn->target)) { |
| if (!SSL_session_reused(conn->data_ctx)) { |
| /* check if session was reused, if not store current session on server for reuse */ |
| if (target_srv(&conn->target)->ssl_ctx.reused_sess) |
| SSL_SESSION_free(target_srv(&conn->target)->ssl_ctx.reused_sess); |
| |
| target_srv(&conn->target)->ssl_ctx.reused_sess = SSL_get1_session(conn->data_ctx); |
| } |
| } |
| |
| /* The connection is now established at both layers, it's time to leave */ |
| conn->flags &= ~(flag | CO_FL_WAIT_L4_CONN | CO_FL_WAIT_L6_CONN); |
| return 1; |
| |
| out_error: |
| /* Fail on all other handshake errors */ |
| conn->flags |= CO_FL_ERROR; |
| conn->flags &= ~flag; |
| return 0; |
| } |
| |
| /* Receive up to <count> bytes from connection <conn>'s socket and store them |
| * into buffer <buf>. The caller must ensure that <count> is always smaller |
| * than the buffer's size. Only one call to recv() is performed, unless the |
| * buffer wraps, in which case a second call may be performed. The connection's |
| * flags are updated with whatever special event is detected (error, read0, |
| * empty). The caller is responsible for taking care of those events and |
| * avoiding the call if inappropriate. The function does not call the |
| * connection's polling update function, so the caller is responsible for this. |
| */ |
| static int ssl_sock_to_buf(struct connection *conn, struct buffer *buf, int count) |
| { |
| int ret, done = 0; |
| int try = count; |
| |
| if (!conn->data_ctx) |
| goto out_error; |
| |
| if (conn->flags & CO_FL_HANDSHAKE) |
| /* a handshake was requested */ |
| return 0; |
| |
| /* compute the maximum block size we can read at once. */ |
| if (buffer_empty(buf)) { |
| /* let's realign the buffer to optimize I/O */ |
| buf->p = buf->data; |
| } |
| else if (buf->data + buf->o < buf->p && |
| buf->p + buf->i < buf->data + buf->size) { |
| /* remaining space wraps at the end, with a moving limit */ |
| if (try > buf->data + buf->size - (buf->p + buf->i)) |
| try = buf->data + buf->size - (buf->p + buf->i); |
| } |
| |
| /* read the largest possible block. For this, we perform only one call |
| * to recv() unless the buffer wraps and we exactly fill the first hunk, |
| * in which case we accept to do it once again. A new attempt is made on |
| * EINTR too. |
| */ |
| while (try) { |
| ret = SSL_read(conn->data_ctx, bi_end(buf), try); |
| if (conn->flags & CO_FL_ERROR) { |
| /* CO_FL_ERROR may be set by ssl_sock_infocbk */ |
| break; |
| } |
| if (ret > 0) { |
| buf->i += ret; |
| done += ret; |
| if (ret < try) |
| break; |
| count -= ret; |
| try = count; |
| } |
| else if (ret == 0) { |
| goto read0; |
| } |
| else { |
| ret = SSL_get_error(conn->data_ctx, ret); |
| if (ret == SSL_ERROR_WANT_WRITE) { |
| /* handshake is running, and it needs to poll for a write event */ |
| conn->flags |= CO_FL_SSL_WAIT_HS; |
| __conn_sock_poll_send(conn); |
| break; |
| } |
| else if (ret == SSL_ERROR_WANT_READ) { |
| /* we need to poll for retry a read later */ |
| __conn_data_poll_recv(conn); |
| break; |
| } |
| /* otherwise it's a real error */ |
| goto out_error; |
| } |
| } |
| return done; |
| |
| read0: |
| conn_sock_read0(conn); |
| return done; |
| out_error: |
| conn->flags |= CO_FL_ERROR; |
| return done; |
| } |
| |
| |
| /* Send all pending bytes from buffer <buf> to connection <conn>'s socket. |
| * <flags> may contain MSG_MORE to make the system hold on without sending |
| * data too fast, but this flag is ignored at the moment. |
| * Only one call to send() is performed, unless the buffer wraps, in which case |
| * a second call may be performed. The connection's flags are updated with |
| * whatever special event is detected (error, empty). The caller is responsible |
| * for taking care of those events and avoiding the call if inappropriate. The |
| * function does not call the connection's polling update function, so the caller |
| * is responsible for this. |
| */ |
| static int ssl_sock_from_buf(struct connection *conn, struct buffer *buf, int flags) |
| { |
| int ret, try, done; |
| |
| done = 0; |
| |
| if (!conn->data_ctx) |
| goto out_error; |
| |
| if (conn->flags & CO_FL_HANDSHAKE) |
| /* a handshake was requested */ |
| return 0; |
| |
| /* send the largest possible block. For this we perform only one call |
| * to send() unless the buffer wraps and we exactly fill the first hunk, |
| * in which case we accept to do it once again. |
| */ |
| while (buf->o) { |
| try = buf->o; |
| /* outgoing data may wrap at the end */ |
| if (buf->data + try > buf->p) |
| try = buf->data + try - buf->p; |
| |
| ret = SSL_write(conn->data_ctx, bo_ptr(buf), try); |
| if (conn->flags & CO_FL_ERROR) { |
| /* CO_FL_ERROR may be set by ssl_sock_infocbk */ |
| break; |
| } |
| if (ret > 0) { |
| buf->o -= ret; |
| done += ret; |
| |
| if (likely(!buffer_len(buf))) |
| /* optimize data alignment in the buffer */ |
| buf->p = buf->data; |
| |
| /* if the system buffer is full, don't insist */ |
| if (ret < try) |
| break; |
| } |
| else { |
| ret = SSL_get_error(conn->data_ctx, ret); |
| if (ret == SSL_ERROR_WANT_WRITE) { |
| /* we need to poll to retry a write later */ |
| __conn_data_poll_send(conn); |
| break; |
| } |
| else if (ret == SSL_ERROR_WANT_READ) { |
| /* handshake is running, and |
| it needs to poll for a read event, |
| write polling must be disabled cause |
| we are sure we can't write anything more |
| before handshake re-performed */ |
| conn->flags |= CO_FL_SSL_WAIT_HS; |
| __conn_sock_poll_recv(conn); |
| break; |
| } |
| goto out_error; |
| } |
| } |
| return done; |
| |
| out_error: |
| conn->flags |= CO_FL_ERROR; |
| return done; |
| } |
| |
| |
| static void ssl_sock_close(struct connection *conn) { |
| |
| if (conn->data_ctx) { |
| SSL_free(conn->data_ctx); |
| conn->data_ctx = NULL; |
| sslconns--; |
| } |
| } |
| |
| /* This function tries to perform a clean shutdown on an SSL connection, and in |
| * any case, flags the connection as reusable if no handshake was in progress. |
| */ |
| static void ssl_sock_shutw(struct connection *conn, int clean) |
| { |
| if (conn->flags & CO_FL_HANDSHAKE) |
| return; |
| /* no handshake was in progress, try a clean ssl shutdown */ |
| if (clean) |
| SSL_shutdown(conn->data_ctx); |
| |
| /* force flag on ssl to keep session in cache regardless shutdown result */ |
| SSL_set_shutdown(conn->data_ctx, SSL_SENT_SHUTDOWN); |
| } |
| |
| /***** Below are some sample fetching functions for ACL/patterns *****/ |
| |
| /* boolean, returns true if client cert was present */ |
| static int |
| smp_fetch_client_crt(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| if (!l4 || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| if (!(l4->si[0].conn.flags & CO_FL_CONNECTED)) { |
| smp->flags |= SMP_F_MAY_CHANGE; |
| return 0; |
| } |
| |
| smp->flags = 0; |
| smp->type = SMP_T_BOOL; |
| smp->data.uint = SSL_SOCK_ST_FL_VERIFY_DONE & l4->si[0].conn.data_st ? 1 : 0; |
| |
| return 1; |
| } |
| |
| |
| /* boolean, returns true if data layer is SSL */ |
| static int |
| smp_fetch_is_ssl(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| smp->type = SMP_T_BOOL; |
| smp->data.uint = (l4->si[0].conn.data == &ssl_sock); |
| return 1; |
| } |
| |
| /* boolean, returns true if data layer is SSL */ |
| static int |
| smp_fetch_has_sni(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| smp->type = SMP_T_BOOL; |
| smp->data.uint = (l4->si[0].conn.data == &ssl_sock) && |
| l4->si[0].conn.data_ctx && |
| SSL_get_servername(l4->si[0].conn.data_ctx, TLSEXT_NAMETYPE_host_name) != NULL; |
| return 1; |
| #else |
| return 0; |
| #endif |
| } |
| |
| static int |
| smp_fetch_ssl_sni(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| smp->flags = 0; |
| smp->type = SMP_T_CSTR; |
| |
| if (!l4 || !l4->si[0].conn.data_ctx || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| smp->data.str.str = (char *)SSL_get_servername(l4->si[0].conn.data_ctx, TLSEXT_NAMETYPE_host_name); |
| if (!smp->data.str.str) |
| return 0; |
| |
| smp->data.str.len = strlen(smp->data.str.str); |
| return 1; |
| #else |
| return 0; |
| #endif |
| } |
| |
| /* integer, returns the first verify error ID in CA */ |
| static int |
| smp_fetch_verify_caerr(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| if (!l4 || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| if (!(l4->si[0].conn.flags & CO_FL_CONNECTED)) { |
| smp->flags = SMP_F_MAY_CHANGE; |
| return 0; |
| } |
| |
| smp->type = SMP_T_UINT; |
| smp->data.uint = (unsigned int)SSL_SOCK_ST_TO_CA_ERROR(l4->si[0].conn.data_st); |
| smp->flags = 0; |
| |
| return 1; |
| } |
| |
| /* integer, returns the depth of the first verify error in CA */ |
| static int |
| smp_fetch_verify_caerr_depth(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| if (!l4 || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| if (!(l4->si[0].conn.flags & CO_FL_CONNECTED)) { |
| smp->flags = SMP_F_MAY_CHANGE; |
| return 0; |
| } |
| |
| smp->type = SMP_T_UINT; |
| smp->data.uint = (unsigned int)SSL_SOCK_ST_TO_CAEDEPTH(l4->si[0].conn.data_st); |
| smp->flags = 0; |
| |
| return 1; |
| } |
| |
| /* integer, returns the depth of the first verify error in CA */ |
| static int |
| smp_fetch_verify_crterr(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| if (!l4 || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| if (!(l4->si[0].conn.flags & CO_FL_CONNECTED)) { |
| smp->flags = SMP_F_MAY_CHANGE; |
| return 0; |
| } |
| |
| smp->type = SMP_T_UINT; |
| smp->data.uint = (unsigned int)SSL_SOCK_ST_TO_CRTERROR(l4->si[0].conn.data_st); |
| smp->flags = 0; |
| |
| return 1; |
| } |
| |
| /* integer, returns the verify result */ |
| static int |
| smp_fetch_verify_result(struct proxy *px, struct session *l4, void *l7, unsigned int opt, |
| const struct arg *args, struct sample *smp) |
| { |
| if (!l4 || l4->si[0].conn.data != &ssl_sock) |
| return 0; |
| |
| if (!(l4->si[0].conn.flags & CO_FL_CONNECTED)) { |
| smp->flags = SMP_F_MAY_CHANGE; |
| return 0; |
| } |
| |
| if (!l4->si[0].conn.data_ctx) |
| return 0; |
| |
| smp->type = SMP_T_UINT; |
| smp->data.uint = (unsigned int)SSL_get_verify_result(l4->si[0].conn.data_ctx); |
| smp->flags = 0; |
| |
| return 1; |
| } |
| |
| /* parse the "cafile" bind keyword */ |
| static int bind_parse_cafile(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| if (!*args[cur_arg + 1]) { |
| if (err) |
| memprintf(err, "'%s' : missing CAfile path", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| conf->cafile = strdup(args[cur_arg + 1]); |
| return 0; |
| } |
| |
| /* parse the "ciphers" bind keyword */ |
| static int bind_parse_ciphers(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| if (!*args[cur_arg + 1]) { |
| memprintf(err, "'%s' : missing cipher suite", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| conf->ciphers = strdup(args[cur_arg + 1]); |
| return 0; |
| } |
| |
| /* parse the "crt" bind keyword */ |
| static int bind_parse_crt(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| if (!*args[cur_arg + 1]) { |
| memprintf(err, "'%s' : missing certificate location", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| if (ssl_sock_load_cert(args[cur_arg + 1], conf, px, err) > 0) |
| return ERR_ALERT | ERR_FATAL; |
| |
| return 0; |
| } |
| |
| /* parse the "crlfile" bind keyword */ |
| static int bind_parse_crlfile(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| if (!*args[cur_arg + 1]) { |
| if (err) |
| memprintf(err, "'%s' : missing CRLfile path", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| conf->crlfile = strdup(args[cur_arg + 1]); |
| return 0; |
| } |
| |
| /* parse the "ecdhe" bind keyword keywords */ |
| static int bind_parse_ecdhe(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| #if OPENSSL_VERSION_NUMBER < 0x0090800fL |
| if (err) |
| memprintf(err, "'%s' : library does not support elliptic curve Diffie-Hellman (too old)", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| #elif defined(OPENSSL_NO_ECDH) |
| if (err) |
| memprintf(err, "'%s' : library does not support elliptic curve Diffie-Hellman (disabled via OPENSSL_NO_ECDH)", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| #else |
| if (!*args[cur_arg + 1]) { |
| if (err) |
| memprintf(err, "'%s' : missing named curve", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| conf->ecdhe = strdup(args[cur_arg + 1]); |
| |
| return 0; |
| #endif |
| } |
| |
| /* parse the "crt_ignerr" and "ca_ignerr" bind keywords */ |
| static int bind_parse_ignore_err(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| int code; |
| char *p = args[cur_arg + 1]; |
| unsigned long long *ignerr = &conf->crt_ignerr; |
| |
| if (!*p) { |
| if (err) |
| memprintf(err, "'%s' : missing error IDs list", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| if (strcmp(args[cur_arg], "ca-ignore-err") == 0) |
| ignerr = &conf->ca_ignerr; |
| |
| if (strcmp(p, "all") == 0) { |
| *ignerr = ~0ULL; |
| return 0; |
| } |
| |
| while (p) { |
| code = atoi(p); |
| if ((code <= 0) || (code > 63)) { |
| if (err) |
| memprintf(err, "'%s' : ID '%d' out of range (1..63) in error IDs list '%s'", |
| args[cur_arg], code, args[cur_arg + 1]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| *ignerr |= 1ULL << code; |
| p = strchr(p, ','); |
| if (p) |
| p++; |
| } |
| |
| return 0; |
| } |
| |
| /* parse the "no-tls-tickets" bind keyword */ |
| static int bind_parse_no_tls_tickets(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->no_tls_tickets = 1; |
| return 0; |
| } |
| |
| |
| /* parse the "nosslv3" bind keyword */ |
| static int bind_parse_nosslv3(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->nosslv3 = 1; |
| return 0; |
| } |
| |
| /* parse the "notlsv1" bind keyword */ |
| static int bind_parse_notlsv10(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->notlsv10 = 1; |
| return 0; |
| } |
| |
| /* parse the "notlsv11" bind keyword */ |
| static int bind_parse_notlsv11(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->notlsv11 = 1; |
| return 0; |
| } |
| |
| /* parse the "notlsv12" bind keyword */ |
| static int bind_parse_notlsv12(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->notlsv12 = 1; |
| return 0; |
| } |
| |
| /* parse the "prefer-server-ciphers" bind keyword */ |
| static int bind_parse_psc(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| conf->prefer_server_ciphers = 1; |
| return 0; |
| } |
| |
| /* parse the "ssl" bind keyword */ |
| static int bind_parse_ssl(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| struct listener *l; |
| |
| conf->is_ssl = 1; |
| list_for_each_entry(l, &conf->listeners, by_bind) |
| l->data = &ssl_sock; |
| |
| return 0; |
| } |
| |
| /* parse the "verify" bind keyword */ |
| static int bind_parse_verify(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err) |
| { |
| if (!*args[cur_arg + 1]) { |
| if (err) |
| memprintf(err, "'%s' : missing verify method", args[cur_arg]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| if (strcmp(args[cur_arg + 1], "none") == 0) |
| conf->verify = SSL_VERIFY_NONE; |
| else if (strcmp(args[cur_arg + 1], "optional") == 0) |
| conf->verify = SSL_VERIFY_PEER; |
| else if (strcmp(args[cur_arg + 1], "required") == 0) |
| conf->verify = SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT; |
| else { |
| if (err) |
| memprintf(err, "'%s' : unknown verify method '%s', only 'none', 'optional', and 'required' are supported\n", |
| args[cur_arg], args[cur_arg + 1]); |
| return ERR_ALERT | ERR_FATAL; |
| } |
| |
| return 0; |
| } |
| |
| /* Note: must not be declared <const> as its list will be overwritten. |
| * Please take care of keeping this list alphabetically sorted. |
| */ |
| static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{ |
| { "client_crt", smp_fetch_client_crt, 0, NULL, SMP_T_BOOL, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "is_ssl", smp_fetch_is_ssl, 0, NULL, SMP_T_BOOL, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_has_sni", smp_fetch_has_sni, 0, NULL, SMP_T_BOOL, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_sni", smp_fetch_ssl_sni, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_verify_caerr", smp_fetch_verify_caerr, 0, NULL, SMP_T_UINT, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_verify_caerr_depth", smp_fetch_verify_caerr_depth, 0, NULL, SMP_T_UINT, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_verify_crterr", smp_fetch_verify_crterr, 0, NULL, SMP_T_UINT, SMP_CAP_REQ|SMP_CAP_RES }, |
| { "ssl_verify_result", smp_fetch_verify_result, 0, NULL, SMP_T_UINT, SMP_CAP_REQ|SMP_CAP_RES }, |
| { NULL, NULL, 0, 0, 0 }, |
| }}; |
| |
| /* Note: must not be declared <const> as its list will be overwritten. |
| * Please take care of keeping this list alphabetically sorted. |
| */ |
| static struct acl_kw_list acl_kws = {{ },{ |
| { "client_crt", acl_parse_int, smp_fetch_client_crt, acl_match_nothing, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "is_ssl", acl_parse_int, smp_fetch_is_ssl, acl_match_nothing, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_has_sni", acl_parse_int, smp_fetch_has_sni, acl_match_nothing, ACL_USE_L6REQ_PERMANENT, 0 }, |
| { "ssl_sni", acl_parse_str, smp_fetch_ssl_sni, acl_match_str, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_sni_end", acl_parse_str, smp_fetch_ssl_sni, acl_match_end, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_sni_reg", acl_parse_str, smp_fetch_ssl_sni, acl_match_reg, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_verify_caerr", acl_parse_int, smp_fetch_verify_caerr, acl_match_int, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_verify_caerr_depth", acl_parse_int, smp_fetch_verify_caerr_depth, acl_match_int, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_verify_crterr", acl_parse_int, smp_fetch_verify_crterr, acl_match_int, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { "ssl_verify_result", acl_parse_int, smp_fetch_verify_result, acl_match_int, ACL_USE_L6REQ_PERMANENT|ACL_MAY_LOOKUP, 0 }, |
| { NULL, NULL, NULL, NULL }, |
| }}; |
| |
| /* Note: must not be declared <const> as its list will be overwritten. |
| * Please take care of keeping this list alphabetically sorted, doing so helps |
| * all code contributors. |
| * Optional keywords are also declared with a NULL ->parse() function so that |
| * the config parser can report an appropriate error when a known keyword was |
| * not enabled. |
| */ |
| static struct bind_kw_list bind_kws = { "SSL", { }, { |
| { "cafile", bind_parse_cafile, 1 }, /* set CAfile to process verify on client cert */ |
| { "ca-ignore-err", bind_parse_ignore_err, 1 }, /* set error IDs to ignore on verify depth > 0 */ |
| { "ciphers", bind_parse_ciphers, 1 }, /* set SSL cipher suite */ |
| { "crlfile", bind_parse_crlfile, 1 }, /* set certificat revocation list file use on client cert verify */ |
| { "crt", bind_parse_crt, 1 }, /* load SSL certificates from this location */ |
| { "crt-ignore-err", bind_parse_ignore_err, 1 }, /* set error IDs to ingore on verify depth == 0 */ |
| { "ecdhe", bind_parse_ecdhe, 1 }, /* defines named curve for elliptic curve Diffie-Hellman */ |
| { "no-tls-tickets", bind_parse_no_tls_tickets, 0 }, /* disable session resumption tickets */ |
| { "nosslv3", bind_parse_nosslv3, 0 }, /* disable SSLv3 */ |
| { "notlsv10", bind_parse_notlsv10, 0 }, /* disable TLSv10 */ |
| { "notlsv11", bind_parse_notlsv11, 0 }, /* disable TLSv11 */ |
| { "notlsv12", bind_parse_notlsv12, 0 }, /* disable TLSv12 */ |
| { "prefer-server-ciphers", bind_parse_psc, 0 }, /* prefer server ciphers */ |
| { "ssl", bind_parse_ssl, 0 }, /* enable SSL processing */ |
| { "verify", bind_parse_verify, 1 }, /* set SSL verify method */ |
| { NULL, NULL, 0 }, |
| }}; |
| |
| /* data-layer operations for SSL sockets */ |
| struct data_ops ssl_sock = { |
| .snd_buf = ssl_sock_from_buf, |
| .rcv_buf = ssl_sock_to_buf, |
| .rcv_pipe = NULL, |
| .snd_pipe = NULL, |
| .shutr = NULL, |
| .shutw = ssl_sock_shutw, |
| .close = ssl_sock_close, |
| .init = ssl_sock_init, |
| }; |
| |
| __attribute__((constructor)) |
| static void __ssl_sock_init(void) { |
| STACK_OF(SSL_COMP)* cm; |
| |
| SSL_library_init(); |
| cm = SSL_COMP_get_compression_methods(); |
| sk_SSL_COMP_zero(cm); |
| sample_register_fetches(&sample_fetch_keywords); |
| acl_register_keywords(&acl_kws); |
| bind_register_keywords(&bind_kws); |
| } |
| |
| /* |
| * Local variables: |
| * c-indent-level: 8 |
| * c-basic-offset: 8 |
| * End: |
| */ |