w3m

commit 0edb69b049cea09e7dbb79cf331f42e1b59e4545
parent 58bfcc6f039e93807a879cfe162471ac30512abb
Author: ukai <ukai>
Date:   Sat, 12 Jan 2002 13:33:47 +0000

[w3m-dev 02829]
From: Fumitoshi UKAI  <ukai@debian.or.jp>

Diffstat:
M
ChangeLog
 | 
16
++++++++++++++++
M
file.c
 | 
22
+++++++++++++---------
M
istream.c
 | 
192
++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------
M
istream.h
 | 
5
++---
M
url.c
 | 
106
+++++--------------------------------------------------------------------------

5 files changed, 174 insertions(+), 167 deletions(-)
diff --git a/ChangeLog b/ChangeLog
@@ -1,5 +1,21 @@
 2002-01-12  Fumitoshi UKAI  <ukai@debian.or.jp>
 
+	* [w3m-dev 02829]
+	* file.c (loadGeneralFile): return NO_BUFFER
+	* file.c (loadGeneralFile): if ssl_get_certificate() fails, 
+			no buffer created
+	* istream.c (ssl_certificate_validity): deleted
+	* istream.c (ssl_set_certificate_validity): ditto
+	* istream.c (accept_this_site): added
+	* istream.c (ssl_accept_this_site): ditto
+	* istream.c (ssl_check_cert_ident): 1st arg is `X509 *'
+	* istream.c (ssl_get_certificate): 2nd arg is `char *hostname'
+			cert check code moved here from openSSLHandle()
+	* url.c (free_ssl_ctx): accept_this_site initialized
+	* url.c (openSSLHandle): remove cert check code here
+	
+2002-01-12  Fumitoshi UKAI  <ukai@debian.or.jp>
+
 	* [w3m-dev 02827]
 	* scripts/Makefile: use sed instead of /bin/sh while read; echo loop
 
diff --git a/file.c b/file.c
@@ -1052,7 +1052,7 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 	    {
 		struct stat st;
 		if (stat(pu.real_file, &st) < 0)
-		    return NULL;
+		    return NO_BUFFER;
 		if (S_ISDIR(st.st_mode)) {
 		    if (UseExternalDirBuffer) {
 			Str cmd = Strnew_charp(DirBufferCommand);
@@ -1077,7 +1077,7 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 		}
 	    }
 	}
-	return NULL;
+	return NO_BUFFER;
     }
 
     /* openURL() succeeded */
@@ -1090,7 +1090,7 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 	if (b)
 	    discardBuffer(b);
 	UFclose(&f);
-	return NULL;
+	return NO_BUFFER;
     }
 
     b = NULL;
@@ -1125,8 +1125,10 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 	    t_buf = newBuffer(INIT_BUFFER_WIDTH);
 #ifdef USE_SSL
 	if (IStype(f.stream) == IST_SSL) {
-	    Str s = ssl_get_certificate(f.stream);
-	    if (s != NULL)
+	    Str s = ssl_get_certificate(f.stream, pu.host);
+	    if (s == NULL)
+		return NO_BUFFER;
+	    else
 		t_buf->ssl_certificate = s->ptr;
 	}
 #endif
@@ -1185,7 +1187,7 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 		    /* abort */
 		    UFclose(&f);
 		    signal(SIGINT, prevtrap);
-		    return NULL;
+		    return NO_BUFFER;
 		}
 		UFclose(&f);
 		add_auth_cookie_flag = 1;
@@ -1206,7 +1208,7 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
 		    /* abort */
 		    UFclose(&f);
 		    signal(SIGINT, prevtrap);
-		    return NULL;
+		    return NO_BUFFER;
 		}
 		UFclose(&f);
 		status = HTST_NORMAL;
@@ -1421,8 +1423,10 @@ loadGeneralFile(char *path, ParsedURL *volatile current, char *referer,
     }
 #ifdef USE_SSL
     if (IStype(f.stream) == IST_SSL) {
-	Str s = ssl_get_certificate(f.stream);
-	if (s != NULL)
+	Str s = ssl_get_certificate(f.stream, pu.host);
+	if (s == NULL)
+	    return NO_BUFFER;
+	else
 	    t_buf->ssl_certificate = s->ptr;
     }
 #endif
diff --git a/istream.c b/istream.c
@@ -357,61 +357,21 @@ ISeos(InputStream stream)
 }
 
 #ifdef USE_SSL
-static Str ssl_certificate_validity;
+static Str accept_this_site;
 
 void
-ssl_set_certificate_validity(Str msg)
+ssl_accept_this_site(char *hostname)
 {
-    ssl_certificate_validity = msg;
-}
-
-Str
-ssl_get_certificate(InputStream stream)
-{
-    BIO *bp;
-    X509 *x;
-    X509_NAME *xn;
-    char *p;
-    int len;
-    Str s;
-    char buf[2048];
-
-    if (stream == NULL)
-	return NULL;
-    if (IStype(stream) != IST_SSL)
-	return NULL;
-    if (stream->ssl.handle == NULL)
-	return NULL;
-    x = SSL_get_peer_certificate(stream->ssl.handle->ssl);
-    if (x == NULL)
-	return Strnew_charp("no peer certificate");
-    bp = BIO_new(BIO_s_mem());
-    X509_print(bp, x);
-    len = (int)BIO_ctrl(bp, BIO_CTRL_INFO, 0, (char *)&p);
-    s = ssl_certificate_validity ? Strdup(ssl_certificate_validity)
-	: Strnew_charp("valid certificate");
-    Strcat_charp(s, "\n");
-    xn = X509_get_subject_name(x);
-    if (X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf)) == -1)
-	Strcat_charp(s, " subject=<unknown>");
+    if (hostname)
+	accept_this_site = Strnew_charp(hostname);
     else
-	Strcat_m_charp(s, " subject=", buf, NULL);
-    xn = X509_get_issuer_name(x);
-    if (X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf)) == -1)
-	Strcat_charp(s, ": issuer=<unnown>");
-    else
-	Strcat_m_charp(s, ": issuer=", buf, NULL);
-    Strcat_charp(s, "\n\n");
-    Strcat_charp_n(s, p, len);
-    BIO_free_all(bp);
-    X509_free(x);
-    return s;
+	accept_this_site = NULL;
 }
 
-Str
-ssl_check_cert_ident(SSL * handle, char *hostname)
+
+static Str
+ssl_check_cert_ident(X509 * x, char *hostname)
 {
-    X509 *x;
     int i;
     Str ret = NULL;
     int match_ident = FALSE;
@@ -425,12 +385,6 @@ ssl_check_cert_ident(SSL * handle, char *hostname)
      * the use of the Common Name is existing practice, it is deprecated and
      * Certification Authorities are encouraged to use the dNSName instead.
      */
-    x = SSL_get_peer_certificate(handle);
-    if (!x) {
-	ret = Strnew_charp("Unable to get peer certificate");
-	return ret;
-    }
-
     i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
     if (i >= 0) {
 	X509_EXTENSION *ex;
@@ -493,9 +447,137 @@ ssl_check_cert_ident(SSL * handle, char *hostname)
 	else
 	    match_ident = TRUE;
     }
-    X509_free(x);
     return ret;
 }
+
+Str
+ssl_get_certificate(InputStream stream, char *hostname)
+{
+    BIO *bp;
+    X509 *x;
+    X509_NAME *xn;
+    char *p;
+    int len;
+    Str s;
+    char buf[2048];
+    Str amsg = NULL;
+    Str emsg;
+    char *ans;
+
+    if (stream == NULL)
+	return NULL;
+    if (IStype(stream) != IST_SSL)
+	return NULL;
+    if (stream->ssl.handle == NULL)
+	return NULL;
+    x = SSL_get_peer_certificate(stream->ssl.handle->ssl);
+    if (x == NULL) {
+	if (accept_this_site
+	    && strcasecmp(accept_this_site->ptr, hostname) == 0)
+	    ans = "y";
+	else {
+	    emsg = Strnew_charp("No SSL peer certificate: accept (y/n)?");
+	    term_raw();
+	    ans = inputChar(emsg->ptr);
+	}
+	if (tolower(*ans) == 'y')
+	    amsg = Strnew_charp
+		("Accept SSL session without any peer certificate");
+	else {
+	    char *e = "This SSL session was rejected "
+		"to prevent security violation: no peer certificate";
+	    disp_err_message(e, FALSE);
+	    free_ssl_ctx();
+	    return NULL;
+	}
+	if (amsg)
+	    disp_err_message(amsg->ptr, FALSE);
+	ssl_accept_this_site(hostname);
+	s = amsg ? amsg : Strnew_charp("valid certificate");
+	return s;
+    }
+#ifdef USE_SSL_VERIFY
+    /* check the cert chain.
+     * The chain length is automatically checked by OpenSSL when we
+     * set the verify depth in the ctx.
+     */
+    if (ssl_verify_server) {
+	long verr;
+	if ((verr = SSL_get_verify_result(stream->ssl.handle->ssl))
+	    != X509_V_OK) {
+	    const char *em = X509_verify_cert_error_string(verr);
+	    if (accept_this_site
+		&& strcasecmp(accept_this_site->ptr, hostname) == 0)
+		ans = "y";
+	    else {
+		emsg = Sprintf("%s: accept (y/n)?", em);
+		term_raw();
+		ans = inputChar(emsg->ptr);
+	    }
+	    if (tolower(*ans) == 'y') {
+		amsg = Sprintf("Accept unsecure SSL session: "
+			       "unverified: %s", em);
+	    }
+	    else {
+		char *e =
+		    Sprintf("This SSL session was rejected: %s", em)->ptr;
+		disp_err_message(e, FALSE);
+		free_ssl_ctx();
+		return NULL;
+	    }
+	}
+    }
+#endif
+    emsg = ssl_check_cert_ident(x, hostname);
+    if (emsg != NULL) {
+	if (accept_this_site
+	    && strcasecmp(accept_this_site->ptr, hostname) == 0)
+	    ans = "y";
+	else {
+	    Str ep = Strdup(emsg);
+	    if (ep->length > COLS - 16)
+		Strshrink(ep, ep->length - (COLS - 16));
+	    term_raw();
+	    Strcat_charp(ep, ": accept(y/n)?");
+	    ans = inputChar(ep->ptr);
+	}
+	if (tolower(*ans) == 'y') {
+	    amsg = Strnew_charp("Accept unsecure SSL session:");
+	    Strcat(amsg, emsg);
+	}
+	else {
+	    char *e = "This SSL session was rejected "
+		"to prevent security violation";
+	    disp_err_message(e, FALSE);
+	    free_ssl_ctx();
+	    return NULL;
+	}
+    }
+    if (amsg)
+	disp_err_message(amsg->ptr, FALSE);
+    ssl_accept_this_site(hostname);
+    s = amsg ? amsg : Strnew_charp("valid certificate");
+    Strcat_charp(s, "\n");
+    xn = X509_get_subject_name(x);
+    if (X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf)) == -1)
+	Strcat_charp(s, " subject=<unknown>");
+    else
+	Strcat_m_charp(s, " subject=", buf, NULL);
+    xn = X509_get_issuer_name(x);
+    if (X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf)) == -1)
+	Strcat_charp(s, ": issuer=<unnown>");
+    else
+	Strcat_m_charp(s, ": issuer=", buf, NULL);
+    Strcat_charp(s, "\n\n");
+
+    bp = BIO_new(BIO_s_mem());
+    X509_print(bp, x);
+    len = (int)BIO_ctrl(bp, BIO_CTRL_INFO, 0, (char *)&p);
+    Strcat_charp_n(s, p, len);
+    BIO_free_all(bp);
+    X509_free(x);
+    return s;
+}
 #endif
 
 /* Raw level input stream functions */
diff --git a/istream.h b/istream.h
@@ -125,9 +125,8 @@ extern int ISread(InputStream stream, Str buf, int count);
 extern int ISfileno(InputStream stream);
 extern int ISeos(InputStream stream);
 #ifdef USE_SSL
-extern void ssl_set_certificate_validity(Str msg);
-extern Str ssl_get_certificate(InputStream stream);
-extern Str ssl_check_cert_ident(SSL * handle, char *hostname);
+extern void ssl_accept_this_site(char *hostname);
+extern Str ssl_get_certificate(InputStream stream, char *hostname);
 #endif
 
 #define IST_BASIC	0
diff --git a/url.c b/url.c
@@ -240,6 +240,7 @@ free_ssl_ctx()
     if (ssl_ctx != NULL)
 	SSL_CTX_free(ssl_ctx);
     ssl_ctx = NULL;
+    ssl_accept_this_site(NULL);
 }
 
 #if SSLEAY_VERSION_NUMBER >= 0x00905100
@@ -276,11 +277,7 @@ static SSL *
 openSSLHandle(int sock, char *hostname)
 {
     SSL *handle = NULL;
-    Str emsg;
-    Str amsg = NULL;
-    char *ans;
     static char *old_ssl_forbid_method = NULL;
-    static Str accept_this_site = NULL;
 #ifdef USE_SSL_VERIFY
     static int old_ssl_verify_server = -1;
 #endif
@@ -301,7 +298,6 @@ openSSLHandle(int sock, char *hostname)
     }
     if (ssl_path_modified) {
 	free_ssl_ctx();
-	accept_this_site = NULL;
 	ssl_path_modified = 0;
     }
 #endif				/* defined(USE_SSL_VERIFY) */
@@ -363,105 +359,15 @@ openSSLHandle(int sock, char *hostname)
 #if SSLEAY_VERSION_NUMBER >= 0x00905100
     init_PRNG();
 #endif				/* SSLEAY_VERSION_NUMBER >= 0x00905100 */
-    if (SSL_connect(handle) <= 0)
-	goto eend;
-#ifdef USE_SSL_VERIFY
-    /* check the cert chain.
-     * The chain length is automatically checked by OpenSSL when we
-     * set the verify depth in the ctx.
-     */
-    if (ssl_verify_server) {
-	X509 *x;
-	x = SSL_get_peer_certificate(handle);
-	if (x == NULL) {
-	    if (accept_this_site
-		&& strcasecmp(accept_this_site->ptr, hostname) == 0)
-		ans = "y";
-	    else {
-		emsg = Strnew_charp("No SSL peer certificate: accept (y/n)?");
-		term_raw();
-		ans = inputChar(emsg->ptr);
-	    }
-	    if (tolower(*ans) == 'y')
-		amsg =
-		    Strnew_charp
-		    ("Accept SSL session without any peer certificate");
-	    else {
-		char *e = "This SSL session was rejected "
-		    "to prevent security violation: no peer certificate";
-		disp_err_message(e, FALSE);
-		free_ssl_ctx();
-		return NULL;
-	    }
-	}
-	else {
-	    long verr;
-	    X509_free(x);
-	    if ((verr = SSL_get_verify_result(handle)) != X509_V_OK) {
-		const char *em = X509_verify_cert_error_string(verr);
-		if (accept_this_site
-		    && strcasecmp(accept_this_site->ptr, hostname) == 0)
-		    ans = "y";
-		else {
-		    emsg = Sprintf("%s: accept (y/n)?", em);
-		    term_raw();
-		    ans = inputChar(emsg->ptr);
-		}
-		if (tolower(*ans) == 'y') {
-		    amsg = Sprintf("Accept unsecure SSL session: "
-				   "unverified: %s", em);
-		}
-		else {
-		    char *e =
-			Sprintf("This SSL session was rejected: %s", em)->ptr;
-		    disp_err_message(e, FALSE);
-		    free_ssl_ctx();
-		    return NULL;
-		}
-	    }
-	}
-    }
-    else
-#endif
-	amsg = Strnew_charp("Certificate is not verified");
-
-    emsg = ssl_check_cert_ident(handle, hostname);
-    if (emsg != NULL) {
-	if (accept_this_site
-	    && strcasecmp(accept_this_site->ptr, hostname) == 0)
-	    ans = "y";
-	else {
-	    Str ep = Strdup(emsg);
-	    if (ep->length > COLS - 16)
-		Strshrink(ep, ep->length - (COLS - 16));
-	    term_raw();
-	    Strcat_charp(ep, ": accept(y/n)?");
-	    ans = inputChar(ep->ptr);
-	}
-	if (tolower(*ans) == 'y') {
-	    amsg = Strnew_charp("Accept unsecure SSL session:");
-	    Strcat(amsg, emsg);
-	}
-	else {
-	    char *e = "This SSL session was rejected "
-		"to prevent security violation";
-	    disp_err_message(e, FALSE);
-	    free_ssl_ctx();
-	    return NULL;
-	}
-    }
-    ssl_set_certificate_validity(amsg);
-    if (amsg)
-	disp_err_message(amsg->ptr, FALSE);
-    accept_this_site = Strnew_charp(hostname);
-    return handle;
+    if (SSL_connect(handle) > 0)
+	return handle;
   eend:
     close(sock);
     if (handle)
 	SSL_free(handle);
-    accept_this_site = NULL;
-    emsg = Sprintf("SSL error: %s", ERR_error_string(ERR_get_error(), NULL));
-    disp_err_message(emsg->ptr, FALSE);
+    disp_err_message(Sprintf
+		     ("SSL error: %s",
+		      ERR_error_string(ERR_get_error(), NULL))->ptr, FALSE);
     return NULL;
 }