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mongoose
Commit f4907bc0 authored by valenok's avatar valenok
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introdused NO_SSL. Explicitely linking against SSL library.

parent cb71dc4a
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Showing with 62 additions and 140 deletions
Makefile
View file @ f4907bc0
......@@ -23,7 +23,8 @@ all:
CFLAGS= -W -Wall -std=c99 -pedantic -Os -fomit-frame-pointer $(COPT)
MAC_SHARED= -flat_namespace -bundle -undefined suppress
LINFLAGS= -ldl -pthread $(CFLAGS)
SSLFLAGS= -lssl -lcrypto
LINFLAGS= -ldl -pthread $(SSLFLAGS) $(CFLAGS)
LIB= _$(PROG).so
linux:
......@@ -32,16 +33,17 @@ linux:
bsd:
$(CC) $(CFLAGS) mongoose.c -shared -pthread -s -fpic -fPIC -o $(LIB)
$(CC) $(CFLAGS) mongoose.c main.c -pthread -s -o $(PROG)
$(CC) $(CFLAGS) mongoose.c main.c -pthread -s $(SSLFLAGS) -o $(PROG)
mac:
$(CC) $(CFLAGS) $(MAC_SHARED) mongoose.c -pthread -o $(LIB)
$(CC) $(CFLAGS) mongoose.c main.c -pthread -o $(PROG)
$(CC) $(CFLAGS) $(MAC_SHARED) mongoose.c -pthread $(SSLFLAGS) -o $(LIB)
$(CC) $(CFLAGS) mongoose.c main.c -pthread $(SSLFLAGS) -o $(PROG)
solaris:
gcc $(CFLAGS) mongoose.c -pthread -lnsl \
-lsocket -s -fpic -fPIC -shared -o $(LIB)
gcc $(CFLAGS) mongoose.c main.c -pthread -lnsl -lsocket -s -o $(PROG)
-lsocket $(SSLFLAGS) -s -fpic -fPIC -shared -o $(LIB)
gcc $(CFLAGS) mongoose.c main.c -pthread -lnsl -lsocket $(SSLFLAGS) \
-s -o $(PROG)
##########################################################################
......
mongoose.c
View file @ f4907bc0
......@@ -90,8 +90,6 @@ typedef long off_t;
#define ERRNO GetLastError()
#define NO_SOCKLEN_T
#define SSL_LIB "ssleay32.dll"
#define CRYPTO_LIB "libeay32.dll"
#define DIRSEP '\\'
#define IS_DIRSEP_CHAR(c) ((c) == '/' || (c) == '\\')
#define O_NONBLOCK 0
......@@ -174,8 +172,6 @@ typedef struct DIR {
#include <dirent.h>
#include <dlfcn.h>
#include <pthread.h>
#define SSL_LIB "libssl.so"
#define CRYPTO_LIB "libcrypto.so"
#define DIRSEP '/'
#define IS_DIRSEP_CHAR(c) ((c) == '/')
#define O_BINARY 0
......@@ -234,76 +230,27 @@ typedef struct ssl_ctx_st SSL_CTX;
#define SSL_FILETYPE_PEM 1
#define CRYPTO_LOCK 1
// Dynamically loaded SSL functionality
struct ssl_func {
const char *name; // SSL function name
void (*ptr)(void); // Function pointer
};
#define SSL_free(x) (* (void (*)(SSL *)) ssl_sw[0].ptr)(x)
#define SSL_accept(x) (* (int (*)(SSL *)) ssl_sw[1].ptr)(x)
#define SSL_connect(x) (* (int (*)(SSL *)) ssl_sw[2].ptr)(x)
#define SSL_read(x,y,z) (* (int (*)(SSL *, void *, int)) \
ssl_sw[3].ptr)((x),(y),(z))
#define SSL_write(x,y,z) (* (int (*)(SSL *, const void *,int)) \
ssl_sw[4].ptr)((x), (y), (z))
#define SSL_get_error(x,y)(* (int (*)(SSL *, int)) ssl_sw[5])((x), (y))
#define SSL_set_fd(x,y) (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)((x), (y))
#define SSL_new(x) (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)(x)
#define SSL_CTX_new(x) (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)(x)
#define SSLv23_server_method() (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)()
#define SSL_library_init() (* (int (*)(void)) ssl_sw[10].ptr)()
#define SSL_CTX_use_PrivateKey_file(x,y,z) (* (int (*)(SSL_CTX *, \
const char *, int)) ssl_sw[11].ptr)((x), (y), (z))
#define SSL_CTX_use_certificate_file(x,y,z) (* (int (*)(SSL_CTX *, \
const char *, int)) ssl_sw[12].ptr)((x), (y), (z))
#define SSL_CTX_set_default_passwd_cb(x,y) \
(* (void (*)(SSL_CTX *, mg_callback_t)) ssl_sw[13].ptr)((x),(y))
#define SSL_CTX_free(x) (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)(x)
#define ERR_get_error() (* (unsigned long (*)(void)) ssl_sw[15].ptr)()
#define ERR_error_string(x, y) (* (char * (*)(unsigned long, char *)) ssl_sw[16].ptr)((x), (y))
#define SSL_load_error_strings() (* (void (*)(void)) ssl_sw[17].ptr)()
#define CRYPTO_num_locks() (* (int (*)(void)) crypto_sw[0].ptr)()
#define CRYPTO_set_locking_callback(x) \
(* (void (*)(void (*)(int, int, const char *, int))) \
crypto_sw[1].ptr)(x)
#define CRYPTO_set_id_callback(x) \
(* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)(x)
// set_ssl_option() function updates this array.
// It loads SSL library dynamically and changes NULLs to the actual addresses
// of respective functions. The macros above (like SSL_connect()) are really
// just calling these functions indirectly via the pointer.
static struct ssl_func ssl_sw[] = {
{"SSL_free", NULL},
{"SSL_accept", NULL},
{"SSL_connect", NULL},
{"SSL_read", NULL},
{"SSL_write", NULL},
{"SSL_get_error", NULL},
{"SSL_set_fd", NULL},
{"SSL_new", NULL},
{"SSL_CTX_new", NULL},
{"SSLv23_server_method", NULL},
{"SSL_library_init", NULL},
{"SSL_CTX_use_PrivateKey_file", NULL},
{"SSL_CTX_use_certificate_file",NULL},
{"SSL_CTX_set_default_passwd_cb",NULL},
{"SSL_CTX_free", NULL},
{"ERR_get_error", NULL},
{"ERR_error_string", NULL},
{"SSL_load_error_strings", NULL},
{NULL, NULL}
};
// Similar array as ssl_sw. These functions could be located in different lib.
static struct ssl_func crypto_sw[] = {
{"CRYPTO_num_locks", NULL},
{"CRYPTO_set_locking_callback", NULL},
{"CRYPTO_set_id_callback", NULL},
{NULL, NULL}
};
extern void SSL_free(SSL *);
extern int SSL_accept(SSL *);
extern int SSL_connect(SSL *);
extern int SSL_read(SSL *, void *, int);
extern int SSL_write(SSL *, const void *, int);
extern int SSL_get_error(const SSL *, int);
extern int SSL_set_fd(SSL *, int);
extern SSL *SSL_new(SSL_CTX *);
extern SSL_CTX *SSL_CTX_new(SSL_METHOD *);
extern SSL_METHOD *SSLv23_server_method(void);
extern int SSL_library_init(void);
extern void SSL_load_error_strings(void);
extern int SSL_CTX_use_PrivateKey_file(SSL_CTX *, const char *, int);
extern int SSL_CTX_use_certificate_file(SSL_CTX *, const char *, int);
extern void SSL_CTX_set_default_passwd_cb(SSL_CTX *, mg_callback_t);
extern void SSL_CTX_free(SSL_CTX *);
extern unsigned long ERR_get_error(void);
extern char *ERR_error_string(unsigned long, char *);
extern int CRYPTO_num_locks(void);
extern void CRYPTO_set_locking_callback(void (*)(int, int, const char *, int));
extern void CRYPTO_set_id_callback(unsigned long (*)(void));
static const char *month_names[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
......@@ -426,13 +373,6 @@ static void cry(struct mg_connection *conn, const char *fmt, ...) {
conn->request_info.log_message = NULL;
}
// Return OpenSSL error message
static const char *ssl_error(void) {
unsigned long err;
err = ERR_get_error();
return err == 0 ? "" : ERR_error_string(err, NULL);
}
// Return fake connection structure. Used for logging, if connection
// is not applicable at the moment of logging.
static struct mg_connection *fc(struct mg_context *ctx) {
......@@ -1180,9 +1120,12 @@ static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
/* How many bytes we send in this iteration */
k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);
#if !defined(NO_SSL)
if (ssl != NULL) {
n = SSL_write(ssl, buf + sent, k);
} else if (fp != NULL) {
} else
#endif // !NO_SSL
if (fp != NULL) {
n = fwrite(buf + sent, 1, k, fp);
if (ferror(fp))
n = -1;
......@@ -1204,9 +1147,12 @@ static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
static int pull(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int len) {
int nread;
#if !defined(NO_SSL)
if (ssl != NULL) {
nread = SSL_read(ssl, buf, len);
} else if (fp != NULL) {
} else
#endif // !NO_SSL
if (fp != NULL) {
nread = fread(buf, 1, (size_t) len, fp);
if (ferror(fp))
nread = -1;
......@@ -3299,68 +3245,33 @@ static unsigned long ssl_id_callback(void) {
return (unsigned long) pthread_self();
}
static bool_t load_dll(struct mg_context *ctx, const char *dll_name,
struct ssl_func *sw) {
union {void *p; void (*fp)(void);} u;
void *dll_handle;
struct ssl_func *fp;
if ((dll_handle = dlopen(dll_name, RTLD_LAZY)) == NULL) {
cry(fc(ctx), "%s: cannot load %s", __func__, dll_name);
return MG_FALSE;
}
for (fp = sw; fp->name != NULL; fp++) {
#ifdef _WIN32
// GetProcAddress() returns pointer to function
u.fp = (void (*)(void)) dlsym(dll_handle, fp->name);
#else
// dlsym() on UNIX returns void *. ISO C forbids casts of data pointers to
// function pointers. We need to use a union to make a cast.
u.p = dlsym(dll_handle, fp->name);
#endif /* _WIN32 */
if (u.fp == NULL) {
cry(fc(ctx), "%s: cannot find %s", __func__, fp->name);
return MG_FALSE;
} else {
fp->ptr = u.fp;
}
}
return MG_TRUE;
// Return OpenSSL error message
static const char *ssl_error(void) {
unsigned long err;
err = ERR_get_error();
return err == 0 ? "" : ERR_error_string(err, NULL);
}
// Dynamically load SSL library. Set up ctx->ssl_ctx pointer.
static enum mg_error_t set_ssl_option(struct mg_context *ctx) {
SSL_CTX *CTX;
int i, size;
const char *pem = ctx->config->ssl_certificate;
if (pem == NULL) {
return MG_SUCCESS;
}
if (load_dll(ctx, SSL_LIB, ssl_sw) == MG_FALSE ||
load_dll(ctx, CRYPTO_LIB, crypto_sw) == MG_FALSE) {
return MG_ERROR;
}
// Initialize SSL crap
SSL_library_init();
SSL_load_error_strings();
if ((CTX = SSL_CTX_new(SSLv23_server_method())) == NULL) {
cry(fc(ctx), "SSL_CTX_new error: %s", ssl_error());
return MG_ERROR;
} else if (ctx->config->ssl_password_handler != NULL) {
SSL_CTX_set_default_passwd_cb(CTX, ctx->config->ssl_password_handler);
}
if (CTX != NULL && SSL_CTX_use_certificate_file(CTX, pem,
SSL_FILETYPE_PEM) == 0) {
if (SSL_CTX_use_certificate_file(CTX, pem, SSL_FILETYPE_PEM) == 0) {
cry(fc(ctx), "%s: cannot open %s: %s", __func__, pem, ssl_error());
return MG_ERROR;
} else if (CTX != NULL && SSL_CTX_use_PrivateKey_file(CTX, pem,
SSL_FILETYPE_PEM) == 0) {
} else if (SSL_CTX_use_PrivateKey_file(CTX, pem, SSL_FILETYPE_PEM) == 0) {
cry(fc(ctx), "%s: cannot open %s: %s", NULL, pem, ssl_error());
return MG_ERROR;
}
......@@ -3448,10 +3359,12 @@ static void close_socket_gracefully(SOCKET sock) {
}
static void close_connection(struct mg_connection *conn) {
#if !defined(NO_SSL)
if (conn->ssl) {
SSL_free(conn->ssl);
conn->ssl = NULL;
}
#endif // !NO_SSL
if (conn->client.sock != INVALID_SOCKET) {
close_socket_gracefully(conn->client.sock);
......@@ -3567,6 +3480,7 @@ static void worker_thread(struct mg_context *ctx) {
conn->request_info.remote_ip = ntohl(conn->request_info.remote_ip);
conn->request_info.is_ssl = conn->client.is_ssl;
#if !defined(NO_SSL)
if (conn->client.is_ssl && (conn->ssl = SSL_new(ctx->ssl_ctx)) == NULL) {
cry(conn, "%s: SSL_new: %s", __func__, ssl_error());
} else if (conn->client.is_ssl &&
......@@ -3574,7 +3488,9 @@ static void worker_thread(struct mg_context *ctx) {
cry(conn, "%s: SSL_set_fd: %s", __func__, ssl_error());
} else if (conn->client.is_ssl && SSL_accept(conn->ssl) != 1) {
cry(conn, "%s: SSL handshake error: %s", __func__, ssl_error());
} else {
} else
#endif // !NO_SSL
{
process_new_connection(conn);
}
......@@ -3682,10 +3598,12 @@ static void master_thread(struct mg_context *ctx) {
}
(void) pthread_mutex_unlock(&ctx->mutex);
#if !defined(NO_SSL)
// Deallocate SSL context
if (ctx->ssl_ctx != NULL) {
SSL_CTX_free(ctx->ssl_ctx);
}
#endif // !NO_SSL
// All threads exited, no sync is needed. Destroy mutex and condvars
(void) pthread_mutex_destroy(&ctx->mutex);
......@@ -3743,9 +3661,11 @@ struct mg_context * mg_start(const struct mg_config *config) {
// NOTE(lsm): order is important here. SSL certificates must
// be initialized before listening ports. UID must be set last.
if (set_ssl_option(ctx) == MG_ERROR ||
if (set_gpass_option(ctx) == MG_ERROR ||
#if !defined(NO_SSL)
(config->ssl_certificate != NULL && set_ssl_option(ctx) == MG_ERROR) ||
#endif // !NO_SSL
set_ports_option(ctx) == MG_ERROR ||
set_gpass_option(ctx) == MG_ERROR ||
#if !defined(_WIN32)
set_uid_option(ctx) == MG_ERROR ||
#endif
......
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