67 lines
2.8 KiB
Diff
67 lines
2.8 KiB
Diff
diff -Nru a/src/osdep/unix/ssl_unix.c b/src/osdep/unix/ssl_unix.c
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--- a/src/osdep/unix/ssl_unix.c 2011-07-23 02:20:10.000000000 +0200
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+++ b/src/osdep/unix/ssl_unix.c 2018-09-22 09:34:26.492765776 +0200
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@@ -59,7 +59,7 @@
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static SSLSTREAM *ssl_start(TCPSTREAM *tstream,char *host,unsigned long flags);
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static char *ssl_start_work (SSLSTREAM *stream,char *host,unsigned long flags);
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static int ssl_open_verify (int ok,X509_STORE_CTX *ctx);
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-static char *ssl_validate_cert (X509 *cert,char *host);
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+static char *ssl_validate_cert (X509 *cert,char *host, char *cert_subj);
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static long ssl_compare_hostnames (unsigned char *s,unsigned char *pat);
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static char *ssl_getline_work (SSLSTREAM *stream,unsigned long *size,
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long *contd);
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@@ -210,6 +210,7 @@
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BIO *bio;
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X509 *cert;
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unsigned long sl,tl;
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+ char cert_subj[250];
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char *s,*t,*err,tmp[MAILTMPLEN];
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sslcertificatequery_t scq =
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(sslcertificatequery_t) mail_parameters (NIL,GET_SSLCERTIFICATEQUERY,NIL);
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@@ -266,13 +267,17 @@
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if (SSL_write (stream->con,"",0) < 0)
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return ssl_last_error ? ssl_last_error : "SSL negotiation failed";
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/* need to validate host names? */
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- if (!(flags & NET_NOVALIDATECERT) &&
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- (err = ssl_validate_cert (cert = SSL_get_peer_certificate (stream->con),
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- host))) {
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- /* application callback */
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- if (scq) return (*scq) (err,host,cert ? cert->name : "???") ? NIL : "";
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- /* error message to return via mm_log() */
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- sprintf (tmp,"*%.128s: %.255s",err,cert ? cert->name : "???");
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+ if (!(flags & NET_NOVALIDATECERT)) {
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+ cert_subj[0] = '\0';
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+ cert = SSL_get_peer_certificate(stream->con);
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+ if (cert)
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+ X509_NAME_oneline(X509_get_subject_name(cert), cert_subj, sizeof(cert_subj));
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+ err = ssl_validate_cert (cert, host, cert_subj);
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+ if (err)
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+ /* application callback */
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+ if (scq) return (*scq) (err,host,cert ? cert_subj : "???") ? NIL : "";
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+ /* error message to return via mm_log() */
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+ sprintf (tmp,"*%.128s: %.255s",err,cert ? cert_subj : "???");
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return ssl_last_error = cpystr (tmp);
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}
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return NIL;
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@@ -313,7 +318,7 @@
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* Returns: NIL if validated, else string of error message
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*/
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-static char *ssl_validate_cert (X509 *cert,char *host)
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+static char *ssl_validate_cert (X509 *cert,char *host, char *cert_subj)
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{
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int i,n;
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char *s,*t,*ret;
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@@ -322,9 +327,9 @@
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/* make sure have a certificate */
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if (!cert) ret = "No certificate from server";
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/* and that it has a name */
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- else if (!cert->name) ret = "No name in certificate";
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+ else if (cert_subj[0] == '\0') ret = "No name in certificate";
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/* locate CN */
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- else if (s = strstr (cert->name,"/CN=")) {
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+ else if (s = strstr (cert_subj,"/CN=")) {
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if (t = strchr (s += 4,'/')) *t = '\0';
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/* host name matches pattern? */
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ret = ssl_compare_hostnames (host,s) ? NIL :
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