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Comment:Fix [006bd0c74e]: PATCH: BIO_CTRL_PUSH not handled. Also add some changes from androwish: [https://www.androwish.org/home/info/982ebf9d31a60440]
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SHA3-256: 1b8c76f78306a5bf9ad2fad11e32c82e239deeffb5e7490d608d1ba55217b14d
User & Date: jan.nijtmans on 2024-02-22 17:40:55
Other Links: branch diff | manifest | tags
Context
2024-02-22
17:51
Forward declaration no longer necessary check-in: 93c001e9c4 user: jan.nijtmans tags: nijtmans
17:44
Merge trunk. tlsBIO.c is now fully equal to trunk. check-in: dae8857d72 user: jan.nijtmans tags: bohagan
17:40
Fix [006bd0c74e]: PATCH: BIO_CTRL_PUSH not handled. Also add some changes from androwish: [https://www.androwish.org/home/info/982ebf9d31a60440] check-in: 1b8c76f783 user: jan.nijtmans tags: nijtmans
13:49
A lot of formatting, no change in functionality. check-in: 46ffe75283 user: jan.nijtmans tags: nijtmans
Changes
Unified Diff Ignore Whitespace Patch
Modified generic/tlsBIO.c from [1f5961558a] to [dd9500370d].
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#define BIO_meth_set_read(bio, val)      (bio)->bread = val;
#define BIO_meth_set_puts(bio, val)      (bio)->bputs = val;
#define BIO_meth_set_ctrl(bio, val)      (bio)->ctrl = val;
#define BIO_meth_set_create(bio, val)    (bio)->create = val;
#define BIO_meth_set_destroy(bio, val)   (bio)->destroy = val;
#endif


/*
 * Forward declarations
 */

static int BioWrite (BIO *h, const char *buf, int num);
static int BioRead  (BIO *h, char *buf, int num);
static int BioPuts  (BIO *h, const char *str);
static long BioCtrl (BIO *h, int cmd, long arg1, void *ptr);
static int BioNew   (BIO *h);
static int BioFree  (BIO *h);

























































































































































































































































BIO *BIO_new_tcl(
    State *statePtr,
    int flags)
{
    BIO *bio;
    static BIO_METHOD *BioMethods = NULL;








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#define BIO_meth_set_read(bio, val)      (bio)->bread = val;
#define BIO_meth_set_puts(bio, val)      (bio)->bputs = val;
#define BIO_meth_set_ctrl(bio, val)      (bio)->ctrl = val;
#define BIO_meth_set_create(bio, val)    (bio)->create = val;
#define BIO_meth_set_destroy(bio, val)   (bio)->destroy = val;
#endif

#if 0
/*
 * Forward declarations
 */

static int BioWrite (BIO *h, const char *buf, int num);
static int BioRead  (BIO *h, char *buf, int num);
static int BioPuts  (BIO *h, const char *str);
static long BioCtrl (BIO *h, int cmd, long arg1, void *ptr);
static int BioNew   (BIO *h);
static int BioFree  (BIO *h);
#endif

static int BioWrite(BIO *bio, const char *buf, int bufLen) {
    Tcl_Channel chan;
    Tcl_Size ret;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);

    ret = Tcl_WriteRaw(chan, buf, (Tcl_Size)bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioWrite(%d) -> %" TCL_SIZE_MODIFIER "d [tclEof=%d; tclErrno=%d]",
	    chan, bufLen, ret, tclEofChan, tclErrno);

    BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;
    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_WriteRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);
    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}
    } else {
	dprintf("Successfully wrote %" TCL_SIZE_MODIFIER "d bytes of data", ret);
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_read(bio)) {
	    dprintf("Setting should retry read flag");

	    BIO_set_retry_read(bio);
	}
    }
    return (int)ret;
}

/* Called by SSL_read()*/
static int BioRead(BIO *bio, char *buf, int bufLen) {
    Tcl_Channel chan;
    Tcl_Size ret = 0;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);

    if (buf == NULL) {
	return 0;
    }

    ret = Tcl_ReadRaw(chan, buf, (Tcl_Size)bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioRead(%d) -> %" TCL_SIZE_MODIFIER "d [tclEof=%d; tclErrno=%d]",
	    chan, bufLen, ret, tclEofChan, tclErrno);

    BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;
    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);
    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}
    } else {
	dprintf("Successfully read %" TCL_SIZE_MODIFIER "d bytes of data", ret);
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_write(bio)) {
	    dprintf("Setting should retry write flag");

	    BIO_set_retry_write(bio);
	}
    }

    dprintf("BioRead(%p, <buf>, %d) [%p] returning %" TCL_SIZE_MODIFIER "d",
	    bio, bufLen, (void *) chan, ret);

    return (int)ret;
}

static int BioPuts(BIO *bio, const char *str) {
    dprintf("BioPuts(%p, <string:%p>) called", bio, str);

    return BioWrite(bio, str, (int) strlen(str));
}

static long BioCtrl(BIO *bio, int cmd, long num, void *ptr) {
    Tcl_Channel chan;
    long ret = 1;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("BioCtrl(%p, 0x%x, 0x%lx, %p)", bio, cmd, num, ptr);

    switch (cmd) {
	case BIO_CTRL_RESET:
		dprintf("Got BIO_CTRL_RESET");
		ret = 0;
		break;
	case BIO_C_FILE_SEEK:
		dprintf("Got BIO_C_FILE_SEEK");
		ret = 0;
		break;
	case BIO_C_FILE_TELL:
		dprintf("Got BIO_C_FILE_TELL");
		ret = 0;
		break;
	case BIO_CTRL_INFO:
		dprintf("Got BIO_CTRL_INFO");
		ret = 1;
		break;
	case BIO_C_SET_FD:
		dprintf("Unsupported call: BIO_C_SET_FD");
		ret = -1;
		break;
	case BIO_C_GET_FD:
		dprintf("Unsupported call: BIO_C_GET_FD");
		ret = -1;
		break;
	case BIO_CTRL_GET_CLOSE:
		dprintf("Got BIO_CTRL_CLOSE");
		ret = BIO_get_shutdown(bio);
		break;
	case BIO_CTRL_SET_CLOSE:
		dprintf("Got BIO_SET_CLOSE");
		BIO_set_shutdown(bio, num);
		break;
	case BIO_CTRL_EOF:
		dprintf("Got BIO_CTRL_EOF");
		ret = ((chan) ? Tcl_Eof(chan) : 1);
		break;
	case BIO_CTRL_PENDING:
		dprintf("Got BIO_CTRL_PENDING");
		ret = ((chan) ? ((Tcl_InputBuffered(chan) ? 1 : 0)) : 0);
		dprintf("BIO_CTRL_PENDING(%d)", (int) ret);
		break;
	case BIO_CTRL_WPENDING:
		dprintf("Got BIO_CTRL_WPENDING");
		ret = 0;
		break;
	case BIO_CTRL_DUP:
		dprintf("Got BIO_CTRL_DUP");
		break;
	case BIO_CTRL_FLUSH:
		dprintf("Got BIO_CTRL_FLUSH");
		ret = ((chan) && (Tcl_WriteRaw(chan, "", 0) >= 0) ? 1 : -1);
		dprintf("BIO_CTRL_FLUSH returning value %li", ret);
		break;
#ifdef BIO_CTRL_PUSH
	case BIO_CTRL_PUSH:
		dprintf("Got BIO_CTRL_PUSH");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_POP
	case BIO_CTRL_POP:
		dprintf("Got BIO_CTRL_POP");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_SET
	case BIO_CTRL_SET:
		dprintf("Got BIO_CTRL_SET");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_GET
	case BIO_CTRL_GET :
		dprintf("Got BIO_CTRL_GET ");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_GET_KTLS_SEND
	case BIO_CTRL_GET_KTLS_SEND:
		dprintf("Got BIO_CTRL_GET_KTLS_SEND");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_GET_KTLS_RECV
	case BIO_CTRL_GET_KTLS_RECV:
		dprintf("Got BIO_CTRL_GET_KTLS_RECV");
		ret = 0;
		break;
#endif
	default:
		dprintf("Got unknown control command (%i)", cmd);
		ret = -2;
		break;
    }
    return ret;
}

static int BioNew(BIO *bio) {
    dprintf("BioNew(%p) called", bio);

    BIO_set_init(bio, 0);
    BIO_set_data(bio, NULL);
    BIO_clear_flags(bio, -1);
    return 1;
}

static int BioFree(BIO *bio) {
    if (bio == NULL) {
	return(0);
    }

    dprintf("BioFree(%p) called", bio);

    if (BIO_get_shutdown(bio)) {
	if (BIO_get_init(bio)) {
	    /*shutdown(bio->num, 2) */
	    /*closesocket(bio->num) */
	}

	BIO_set_init(bio, 0);
	BIO_clear_flags(bio, -1);
    }
    return 1;
}

BIO *BIO_new_tcl(
    State *statePtr,
    int flags)
{
    BIO *bio;
    static BIO_METHOD *BioMethods = NULL;
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    bio = BIO_new(BioMethods);
    BIO_set_data(bio, statePtr);
    BIO_set_shutdown(bio, flags);
    BIO_set_init(bio, 1);
    return(bio);
}

static int BioWrite(BIO *bio, const char *buf, int bufLen) {
    Tcl_Channel chan;
    int ret;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);

    ret = Tcl_WriteRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioWrite(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;
    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_WriteRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);
    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}
    } else {
	dprintf("Successfully wrote some data");
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_read(bio)) {
	    dprintf("Setting should retry read flag");

	    BIO_set_retry_read(bio);
	}
    }
    return(ret);
}

/* Called by SSL_read()*/
static int BioRead(BIO *bio, char *buf, int bufLen) {
    Tcl_Channel chan;
    int ret = 0;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);

    if (buf == NULL) {
	return 0;
    }

    ret = Tcl_ReadRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, tclErrno);

    BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;
    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);
    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}
    } else {
	dprintf("Successfully read some data");
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_write(bio)) {
	    dprintf("Setting should retry write flag");

	    BIO_set_retry_write(bio);
	}
    }

    dprintf("BioRead(%p, <buf>, %d) [%p] returning %i", (void *) bio, bufLen, (void *) chan, ret);

    return(ret);
}

static int BioPuts(BIO *bio, const char *str) {
    dprintf("BioPuts(%p, <string:%p>) called", bio, str);

    return BioWrite(bio, str, (int) strlen(str));
}

static long BioCtrl(BIO *bio, int cmd, long num, void *ptr) {
    Tcl_Channel chan;
    long ret = 1;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("BioCtrl(%p, 0x%x, 0x%lx, %p)", bio, cmd, num, ptr);

    switch (cmd) {
	case BIO_CTRL_RESET:
		dprintf("Got BIO_CTRL_RESET");
		ret = 0;
		break;
	case BIO_C_FILE_SEEK:
		dprintf("Got BIO_C_FILE_SEEK");
		ret = 0;
		break;
	case BIO_C_FILE_TELL:
		dprintf("Got BIO_C_FILE_TELL");
		ret = 0;
		break;
	case BIO_CTRL_INFO:
		dprintf("Got BIO_CTRL_INFO");
		ret = 1;
		break;
	case BIO_C_SET_FD:
		dprintf("Unsupported call: BIO_C_SET_FD");
		ret = -1;
		break;
	case BIO_C_GET_FD:
		dprintf("Unsupported call: BIO_C_GET_FD");
		ret = -1;
		break;
	case BIO_CTRL_GET_CLOSE:
		dprintf("Got BIO_CTRL_CLOSE");
		ret = BIO_get_shutdown(bio);
		break;
	case BIO_CTRL_SET_CLOSE:
		dprintf("Got BIO_SET_CLOSE");
		BIO_set_shutdown(bio, num);
		break;
	case BIO_CTRL_EOF:
		dprintf("Got BIO_CTRL_EOF");
		ret = Tcl_Eof(chan);
		break;
	case BIO_CTRL_PENDING:
		dprintf("Got BIO_CTRL_PENDING");
		ret = ((chan) ? Tcl_InputBuffered(chan) : 0);
		dprintf("BIO_CTRL_PENDING(%d)", (int) ret);
		break;
	case BIO_CTRL_WPENDING:
		dprintf("Got BIO_CTRL_WPENDING");
		ret = 0;
		break;
	case BIO_CTRL_DUP:
		dprintf("Got BIO_CTRL_DUP");
		break;
	case BIO_CTRL_FLUSH:
		dprintf("Got BIO_CTRL_FLUSH");
		ret = ((Tcl_WriteRaw(chan, "", 0) >= 0) ? 1 : -1);
		dprintf("BIO_CTRL_FLUSH returning value %li", ret);
		break;
#ifdef BIO_CTRL_GET_KTLS_SEND
	case BIO_CTRL_GET_KTLS_SEND:
		dprintf("Got BIO_CTRL_GET_KTLS_SEND");
		ret = 0;
		break;
#endif
#ifdef BIO_CTRL_GET_KTLS_RECV
	case BIO_CTRL_GET_KTLS_RECV:
		dprintf("Got BIO_CTRL_GET_KTLS_RECV");
		ret = 0;
		break;
#endif
	default:
		dprintf("Got unknown control command (%i)", cmd);
		ret = -2;
		break;
    }

    return(ret);
}

static int BioNew(BIO *bio) {
    dprintf("BioNew(%p) called", bio);

    BIO_set_init(bio, 0);
    BIO_set_data(bio, NULL);
    BIO_clear_flags(bio, -1);

    return(1);
}

static int BioFree(BIO *bio) {
    if (bio == NULL) {
	return(0);
    }

    dprintf("BioFree(%p) called", bio);

    if (BIO_get_shutdown(bio)) {
	if (BIO_get_init(bio)) {
	    /*shutdown(bio->num, 2) */
	    /*closesocket(bio->num) */
	}

	BIO_set_init(bio, 0);
	BIO_clear_flags(bio, -1);
    }

    return(1);
}








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    bio = BIO_new(BioMethods);
    BIO_set_data(bio, statePtr);
    BIO_set_shutdown(bio, flags);
    BIO_set_init(bio, 1);
    return(bio);
}
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