Merged revisions 124910 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r124910 | tilghman | 2008-06-24 16:08:52 -0500 (Tue, 24 Jun 2008) | 8 lines

Occasionally control characters find their way into CallerID.  These need to
be stripped prior to placing CallerID in the headers of an email.
(closes issue #12759)
 Reported by: RobH
 Patches: 
       20080602__bug12759__2.diff.txt uploaded by Corydon76 (license 14)
 Tested by: RobH

........


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@124912 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 38 insertions, 13 deletions

diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index 646eec316..d4f647264 100644
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -703,6 +703,22 @@ static int is_valid_dtmf(const char *key);
 static int __has_voicemail(const char *context, const char *mailbox, const char *folder, int shortcircuit);
 #endif
 
+static char *strip_control(const char *input, char *buf, size_t buflen)
+{
+	char *bufptr = buf;
+	for (; *input; input++) {
+		if (*input < 32) {
+			continue;
+		}
+		*bufptr++ = *input;
+		if (bufptr == buf + buflen - 1) {
+			break;
+		}
+	}
+	*bufptr = '\0';
+	return buf;
+}
+
 
 /*!
  * \brief Sets default voicemail system options to a voicemail user.
@@ -2405,6 +2421,7 @@ static void make_email_file(FILE *p, char *srcemail, struct ast_vm_user *vmu, in
 	char bound[256];
 	char dur[256];
 	struct ast_tm tm;
+	char enc_cidnum[256], enc_cidname[256];
 	char *passdata2;
 	size_t len_passdata;
 	char *greeting_attachment; 
@@ -2416,7 +2433,9 @@ static void make_email_file(FILE *p, char *srcemail, struct ast_vm_user *vmu, in
 #define ENDL "\n"
 #endif
 
-	gethostname(host, sizeof(host)-1);
+	strip_control(cidnum, enc_cidnum, sizeof(enc_cidnum));
+	strip_control(cidname, enc_cidname, sizeof(enc_cidname));
+	gethostname(host, sizeof(host) - 1);
 
 	if (strchr(srcemail, '@'))
 		ast_copy_string(who, srcemail, sizeof(who));
@@ -2441,16 +2460,18 @@ static void make_email_file(FILE *p, char *srcemail, struct ast_vm_user *vmu, in
 			int vmlen = strlen(fromstring)*3 + 200;
 			passdata = alloca(vmlen);
 			memset(passdata, 0, vmlen);
-			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, cidnum, cidname, dur, date, passdata, vmlen, category, flag);
+			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, enc_cidname, dur, date, passdata, vmlen, category, flag);
 			pbx_substitute_variables_helper(ast, fromstring, passdata, vmlen);
 			len_passdata = strlen(passdata) * 2 + 3;
 			passdata2 = alloca(len_passdata);
 			fprintf(p, "From: %s <%s>" ENDL, quote(passdata, passdata2, len_passdata), who);
 			ast_channel_free(ast);
-		} else
+		} else {
 			ast_log(AST_LOG_WARNING, "Cannot allocate the channel for variables substitution\n");
-	} else
+		}
+	} else {
 		fprintf(p, "From: Asterisk PBX <%s>" ENDL, who);
+	}
 	len_passdata = strlen(vmu->fullname) * 2 + 3;
 	passdata2 = alloca(len_passdata);
 	fprintf(p, "To: %s <%s>" ENDL, quote(vmu->fullname, passdata2, len_passdata), vmu->email);
@@ -2461,12 +2482,13 @@ static void make_email_file(FILE *p, char *srcemail, struct ast_vm_user *vmu, in
 			int vmlen = strlen(emailsubject) * 3 + 200;
 			passdata = alloca(vmlen);
 			memset(passdata, 0, vmlen);
-			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, cidnum, cidname, dur, date, passdata, vmlen, category, flag);
+			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, enc_cidname, dur, date, passdata, vmlen, category, flag);
 			pbx_substitute_variables_helper(ast, emailsubject, passdata, vmlen);
 			fprintf(p, "Subject: %s" ENDL, passdata);
 			ast_channel_free(ast);
-		} else
+		} else {
 			ast_log(AST_LOG_WARNING, "Cannot allocate the channel for variables substitution\n");
+		}
 	} else if (ast_test_flag((&globalflags), VM_PBXSKIP)) {
 		if (ast_strlen_zero(flag)) {
 			fprintf(p, "Subject: New message %d in mailbox %s" ENDL, msgnum + 1, mailbox);
@@ -2493,19 +2515,22 @@ static void make_email_file(FILE *p, char *srcemail, struct ast_vm_user *vmu, in
 		fprintf(p, "X-Asterisk-VM-Flag: %s" ENDL, flag);
 		fprintf(p, "X-Asterisk-VM-Priority: %d" ENDL, chan->priority);
 		fprintf(p, "X-Asterisk-VM-Caller-channel: %s" ENDL, chan->name);
-		fprintf(p, "X-Asterisk-VM-Caller-ID-Num: %s" ENDL, cidnum);
-		fprintf(p, "X-Asterisk-VM-Caller-ID-Name: %s" ENDL, cidname);
+		fprintf(p, "X-Asterisk-VM-Caller-ID-Num: %s" ENDL, enc_cidnum);
+		fprintf(p, "X-Asterisk-VM-Caller-ID-Name: %s" ENDL, enc_cidname);
 		fprintf(p, "X-Asterisk-VM-Duration: %d" ENDL, duration);
-		if (!ast_strlen_zero(category)) 
+		if (!ast_strlen_zero(category)) {
 			fprintf(p, "X-Asterisk-VM-Category: %s" ENDL, category);
+		}
 		fprintf(p, "X-Asterisk-VM-Message-Type: %s" ENDL, msgnum > -1 ? "Message" : greeting_attachment);
 		fprintf(p, "X-Asterisk-VM-Orig-date: %s" ENDL, date);
 		fprintf(p, "X-Asterisk-VM-Orig-time: %ld" ENDL, (long)time(NULL));
 	}
-	if (!ast_strlen_zero(cidnum))
-		fprintf(p, "X-Asterisk-CallerID: %s" ENDL, cidnum);
-	if (!ast_strlen_zero(cidname))
-		fprintf(p, "X-Asterisk-CallerIDName: %s" ENDL, cidname);
+	if (!ast_strlen_zero(cidnum)) {
+		fprintf(p, "X-Asterisk-CallerID: %s" ENDL, enc_cidnum);
+	}
+	if (!ast_strlen_zero(cidname)) {
+		fprintf(p, "X-Asterisk-CallerIDName: %s" ENDL, enc_cidname);
+	}
 	fprintf(p, "MIME-Version: 1.0" ENDL);
 	if (attach_user_voicemail) {
 		/* Something unique. */