mirror of
https://github.com/cesanta/mongoose.git
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put back dynamic SSL lib loading
This commit is contained in:
valenok
parent
4f716e2b9a
commit
ee997ba7d4
14
Makefile
14
Makefile
@ -22,8 +22,7 @@ all:
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CFLAGS= -W -Wall -std=c99 -pedantic -Os -fomit-frame-pointer $(COPT)
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MAC_SHARED= -flat_namespace -bundle -undefined suppress
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SSLFLAGS= -lssl -lcrypto
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LINFLAGS= -ldl -pthread $(SSLFLAGS) $(CFLAGS)
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LINFLAGS= -ldl -pthread $(CFLAGS)
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LIB= _$(PROG).so
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linux:
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@ -32,17 +31,16 @@ linux:
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bsd:
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$(CC) $(CFLAGS) mongoose.c -shared -pthread -fpic -fPIC -o $(LIB)
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$(CC) $(CFLAGS) mongoose.c main.c -pthread $(SSLFLAGS) -o $(PROG)
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$(CC) $(CFLAGS) mongoose.c main.c -pthread -o $(PROG)
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mac:
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$(CC) $(CFLAGS) $(MAC_SHARED) mongoose.c -pthread $(SSLFLAGS) -o $(LIB)
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$(CC) $(CFLAGS) mongoose.c main.c -pthread $(SSLFLAGS) -o $(PROG)
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$(CC) $(CFLAGS) $(MAC_SHARED) mongoose.c -pthread -o $(LIB)
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$(CC) $(CFLAGS) mongoose.c main.c -pthread -o $(PROG)
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solaris:
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gcc $(CFLAGS) mongoose.c -pthread -lnsl \
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-lsocket $(SSLFLAGS) -fpic -fPIC -shared -o $(LIB)
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gcc $(CFLAGS) mongoose.c main.c -pthread -lnsl -lsocket $(SSLFLAGS) \
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-o $(PROG)
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-lsocket -fpic -fPIC -shared -o $(LIB)
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gcc $(CFLAGS) mongoose.c main.c -pthread -lnsl -lsocket -o $(PROG)
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##########################################################################
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195
mongoose.c
195
mongoose.c
@ -90,6 +90,8 @@ typedef long off_t;
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#define ERRNO GetLastError()
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#define NO_SOCKLEN_T
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#define SSL_LIB "ssleay32.dll"
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#define CRYPTO_LIB "libeay32.dll"
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#define DIRSEP '\\'
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#define IS_DIRSEP_CHAR(c) ((c) == '/' || (c) == '\\')
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#define O_NONBLOCK 0
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@ -172,6 +174,13 @@ typedef struct DIR {
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#include <dirent.h>
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#include <dlfcn.h>
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#include <pthread.h>
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#if defined(__MACH__)
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#define SSL_LIB "libssl.dylib"
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#define CRYPTO_LIB "libcrypto.dylib"
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#else
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#define SSL_LIB "libssl.so"
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#define CRYPTO_LIB "libcrypto.so"
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#endif
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#define DIRSEP '/'
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#define IS_DIRSEP_CHAR(c) ((c) == '/')
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#define O_BINARY 0
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@ -230,27 +239,76 @@ typedef struct ssl_ctx_st SSL_CTX;
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#define SSL_FILETYPE_PEM 1
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#define CRYPTO_LOCK 1
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extern void SSL_free(SSL *);
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extern int SSL_accept(SSL *);
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extern int SSL_connect(SSL *);
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extern int SSL_read(SSL *, void *, int);
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extern int SSL_write(SSL *, const void *, int);
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extern int SSL_get_error(const SSL *, int);
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extern int SSL_set_fd(SSL *, int);
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extern SSL *SSL_new(SSL_CTX *);
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extern SSL_CTX *SSL_CTX_new(SSL_METHOD *);
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extern SSL_METHOD *SSLv23_server_method(void);
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extern int SSL_library_init(void);
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extern void SSL_load_error_strings(void);
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extern int SSL_CTX_use_PrivateKey_file(SSL_CTX *, const char *, int);
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extern int SSL_CTX_use_certificate_file(SSL_CTX *, const char *, int);
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extern void SSL_CTX_set_default_passwd_cb(SSL_CTX *, mg_callback_t);
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extern void SSL_CTX_free(SSL_CTX *);
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extern unsigned long ERR_get_error(void);
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extern char *ERR_error_string(unsigned long, char *);
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extern int CRYPTO_num_locks(void);
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extern void CRYPTO_set_locking_callback(void (*)(int, int, const char *, int));
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extern void CRYPTO_set_id_callback(unsigned long (*)(void));
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// Dynamically loaded SSL functionality
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struct ssl_func {
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const char *name; // SSL function name
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void (*ptr)(void); // Function pointer
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};
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#define SSL_free(x) (* (void (*)(SSL *)) ssl_sw[0].ptr)(x)
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#define SSL_accept(x) (* (int (*)(SSL *)) ssl_sw[1].ptr)(x)
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#define SSL_connect(x) (* (int (*)(SSL *)) ssl_sw[2].ptr)(x)
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#define SSL_read(x,y,z) (* (int (*)(SSL *, void *, int)) \
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ssl_sw[3].ptr)((x),(y),(z))
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#define SSL_write(x,y,z) (* (int (*)(SSL *, const void *,int)) \
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ssl_sw[4].ptr)((x), (y), (z))
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#define SSL_get_error(x,y)(* (int (*)(SSL *, int)) ssl_sw[5])((x), (y))
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#define SSL_set_fd(x,y) (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)((x), (y))
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#define SSL_new(x) (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)(x)
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#define SSL_CTX_new(x) (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)(x)
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#define SSLv23_server_method() (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)()
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#define SSL_library_init() (* (int (*)(void)) ssl_sw[10].ptr)()
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#define SSL_CTX_use_PrivateKey_file(x,y,z) (* (int (*)(SSL_CTX *, \
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const char *, int)) ssl_sw[11].ptr)((x), (y), (z))
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#define SSL_CTX_use_certificate_file(x,y,z) (* (int (*)(SSL_CTX *, \
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const char *, int)) ssl_sw[12].ptr)((x), (y), (z))
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#define SSL_CTX_set_default_passwd_cb(x,y) \
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(* (void (*)(SSL_CTX *, mg_callback_t)) ssl_sw[13].ptr)((x),(y))
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#define SSL_CTX_free(x) (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)(x)
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#define ERR_get_error() (* (unsigned long (*)(void)) ssl_sw[15].ptr)()
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#define ERR_error_string(x, y) (* (char * (*)(unsigned long, char *)) ssl_sw[16].ptr)((x), (y))
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#define SSL_load_error_strings() (* (void (*)(void)) ssl_sw[17].ptr)()
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#define CRYPTO_num_locks() (* (int (*)(void)) crypto_sw[0].ptr)()
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#define CRYPTO_set_locking_callback(x) \
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(* (void (*)(void (*)(int, int, const char *, int))) \
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crypto_sw[1].ptr)(x)
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#define CRYPTO_set_id_callback(x) \
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(* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)(x)
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// set_ssl_option() function updates this array.
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// It loads SSL library dynamically and changes NULLs to the actual addresses
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// of respective functions. The macros above (like SSL_connect()) are really
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// just calling these functions indirectly via the pointer.
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static struct ssl_func ssl_sw[] = {
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{"SSL_free", NULL},
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{"SSL_accept", NULL},
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{"SSL_connect", NULL},
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{"SSL_read", NULL},
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{"SSL_write", NULL},
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{"SSL_get_error", NULL},
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{"SSL_set_fd", NULL},
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{"SSL_new", NULL},
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{"SSL_CTX_new", NULL},
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{"SSLv23_server_method", NULL},
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{"SSL_library_init", NULL},
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{"SSL_CTX_use_PrivateKey_file", NULL},
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{"SSL_CTX_use_certificate_file",NULL},
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{"SSL_CTX_set_default_passwd_cb",NULL},
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{"SSL_CTX_free", NULL},
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{"ERR_get_error", NULL},
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{"ERR_error_string", NULL},
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{"SSL_load_error_strings", NULL},
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{NULL, NULL}
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};
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// Similar array as ssl_sw. These functions could be located in different lib.
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static struct ssl_func crypto_sw[] = {
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{"CRYPTO_num_locks", NULL},
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{"CRYPTO_set_locking_callback", NULL},
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{"CRYPTO_set_id_callback", NULL},
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{NULL, NULL}
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};
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static const char *month_names[] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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@ -291,15 +349,15 @@ struct socket {
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};
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struct mg_context {
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int stop_flag; // Should we stop event loop
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SSL_CTX *ssl_ctx; // SSL context
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int stop_flag; // Should we stop event loop
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SSL_CTX *ssl_ctx; // SSL context
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const struct mg_config *config; // Mongoose configuration
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struct socket *listening_sockets;
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int num_threads; // Number of threads
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pthread_mutex_t mutex; // Protects (max|num)_threads
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pthread_cond_t cond; // Condvar for tracking workers terminations
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int num_threads; // Number of threads
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pthread_mutex_t mutex; // Protects (max|num)_threads
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pthread_cond_t cond; // Condvar for tracking workers terminations
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struct socket queue[20]; // Accepted sockets
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int sq_head; // Head of the socket queue
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@ -373,6 +431,13 @@ static void cry(struct mg_connection *conn, const char *fmt, ...) {
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conn->request_info.log_message = NULL;
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}
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// Return OpenSSL error message
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static const char *ssl_error(void) {
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unsigned long err;
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err = ERR_get_error();
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return err == 0 ? "" : ERR_error_string(err, NULL);
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}
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// Return fake connection structure. Used for logging, if connection
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// is not applicable at the moment of logging.
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static struct mg_connection *fc(struct mg_context *ctx) {
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@ -920,14 +985,12 @@ static int start_thread(struct mg_context *ctx, mg_thread_func_t func,
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return hThread == NULL ? -1 : 0;
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}
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#if 0
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static HANDLE dlopen(const char *dll_name, int flags) {
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wchar_t wbuf[PATH_MAX];
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flags = 0; // Unused
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to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf));
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return LoadLibraryW(wbuf);
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}
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#endif
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#if !defined(NO_CGI)
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#define SIGKILL 0
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@ -1125,12 +1188,9 @@ static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
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/* How many bytes we send in this iteration */
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k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);
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#if !defined(NO_SSL)
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if (ssl != NULL) {
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n = SSL_write(ssl, buf + sent, k);
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} else
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#endif // !NO_SSL
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if (fp != NULL) {
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} else if (fp != NULL) {
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n = fwrite(buf + sent, 1, k, fp);
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if (ferror(fp))
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n = -1;
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@ -1152,12 +1212,9 @@ static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
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static int pull(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int len) {
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int nread;
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#if !defined(NO_SSL)
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if (ssl != NULL) {
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nread = SSL_read(ssl, buf, len);
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} else
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#endif // !NO_SSL
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if (fp != NULL) {
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} else if (fp != NULL) {
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nread = fread(buf, 1, (size_t) len, fp);
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if (ferror(fp))
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nread = -1;
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@ -3251,33 +3308,68 @@ static unsigned long ssl_id_callback(void) {
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return (unsigned long) pthread_self();
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}
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// Return OpenSSL error message
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static const char *ssl_error(void) {
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unsigned long err;
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err = ERR_get_error();
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return err == 0 ? "" : ERR_error_string(err, NULL);
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static bool_t load_dll(struct mg_context *ctx, const char *dll_name,
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struct ssl_func *sw) {
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union {void *p; void (*fp)(void);} u;
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void *dll_handle;
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struct ssl_func *fp;
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if ((dll_handle = dlopen(dll_name, RTLD_LAZY)) == NULL) {
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cry(fc(ctx), "%s: cannot load %s", __func__, dll_name);
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return MG_FALSE;
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}
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for (fp = sw; fp->name != NULL; fp++) {
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#ifdef _WIN32
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// GetProcAddress() returns pointer to function
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u.fp = (void (*)(void)) dlsym(dll_handle, fp->name);
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#else
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// dlsym() on UNIX returns void *. ISO C forbids casts of data pointers to
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// function pointers. We need to use a union to make a cast.
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u.p = dlsym(dll_handle, fp->name);
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#endif /* _WIN32 */
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if (u.fp == NULL) {
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cry(fc(ctx), "%s: cannot find %s", __func__, fp->name);
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return MG_FALSE;
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} else {
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fp->ptr = u.fp;
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}
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}
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return MG_TRUE;
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}
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// Dynamically load SSL library. Set up ctx->ssl_ctx pointer.
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static enum mg_error_t set_ssl_option(struct mg_context *ctx) {
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SSL_CTX *CTX;
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int i, size;
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const char *pem = ctx->config->ssl_certificate;
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if (pem == NULL) {
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return MG_SUCCESS;
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}
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if (load_dll(ctx, SSL_LIB, ssl_sw) == MG_FALSE ||
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load_dll(ctx, CRYPTO_LIB, crypto_sw) == MG_FALSE) {
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return MG_ERROR;
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}
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// Initialize SSL crap
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SSL_library_init();
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SSL_load_error_strings();
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if ((CTX = SSL_CTX_new(SSLv23_server_method())) == NULL) {
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cry(fc(ctx), "SSL_CTX_new error: %s", ssl_error());
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return MG_ERROR;
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} else if (ctx->config->ssl_password_handler != NULL) {
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SSL_CTX_set_default_passwd_cb(CTX, ctx->config->ssl_password_handler);
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}
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if (SSL_CTX_use_certificate_file(CTX, pem, SSL_FILETYPE_PEM) == 0) {
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if (CTX != NULL && SSL_CTX_use_certificate_file(CTX, pem,
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SSL_FILETYPE_PEM) == 0) {
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cry(fc(ctx), "%s: cannot open %s: %s", __func__, pem, ssl_error());
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return MG_ERROR;
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} else if (SSL_CTX_use_PrivateKey_file(CTX, pem, SSL_FILETYPE_PEM) == 0) {
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} else if (CTX != NULL && SSL_CTX_use_PrivateKey_file(CTX, pem,
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SSL_FILETYPE_PEM) == 0) {
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cry(fc(ctx), "%s: cannot open %s: %s", NULL, pem, ssl_error());
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return MG_ERROR;
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}
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@ -3365,12 +3457,10 @@ static void close_socket_gracefully(SOCKET sock) {
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}
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static void close_connection(struct mg_connection *conn) {
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#if !defined(NO_SSL)
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if (conn->ssl) {
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SSL_free(conn->ssl);
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conn->ssl = NULL;
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}
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#endif // !NO_SSL
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if (conn->client.sock != INVALID_SOCKET) {
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close_socket_gracefully(conn->client.sock);
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@ -3486,7 +3576,6 @@ static void worker_thread(struct mg_context *ctx) {
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conn->request_info.remote_ip = ntohl(conn->request_info.remote_ip);
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conn->request_info.is_ssl = conn->client.is_ssl;
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#if !defined(NO_SSL)
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if (conn->client.is_ssl && (conn->ssl = SSL_new(ctx->ssl_ctx)) == NULL) {
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cry(conn, "%s: SSL_new: %s", __func__, ssl_error());
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} else if (conn->client.is_ssl &&
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@ -3494,9 +3583,7 @@ static void worker_thread(struct mg_context *ctx) {
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cry(conn, "%s: SSL_set_fd: %s", __func__, ssl_error());
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} else if (conn->client.is_ssl && SSL_accept(conn->ssl) != 1) {
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cry(conn, "%s: SSL handshake error: %s", __func__, ssl_error());
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} else
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#endif // !NO_SSL
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{
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} else {
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process_new_connection(conn);
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}
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@ -3604,12 +3691,10 @@ static void master_thread(struct mg_context *ctx) {
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}
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(void) pthread_mutex_unlock(&ctx->mutex);
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#if !defined(NO_SSL)
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// Deallocate SSL context
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if (ctx->ssl_ctx != NULL) {
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SSL_CTX_free(ctx->ssl_ctx);
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}
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#endif // !NO_SSL
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// All threads exited, no sync is needed. Destroy mutex and condvars
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(void) pthread_mutex_destroy(&ctx->mutex);
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@ -3667,11 +3752,9 @@ struct mg_context * mg_start(const struct mg_config *config) {
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// NOTE(lsm): order is important here. SSL certificates must
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// be initialized before listening ports. UID must be set last.
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if (set_gpass_option(ctx) == MG_ERROR ||
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#if !defined(NO_SSL)
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(config->ssl_certificate != NULL && set_ssl_option(ctx) == MG_ERROR) ||
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#endif // !NO_SSL
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if (set_ssl_option(ctx) == MG_ERROR ||
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set_ports_option(ctx) == MG_ERROR ||
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set_gpass_option(ctx) == MG_ERROR ||
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#if !defined(_WIN32)
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set_uid_option(ctx) == MG_ERROR ||
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#endif
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