config: Include some extra files in the tarball

[ppp.git] / chat / chat.c

diff --git a/chat/chat.c b/chat/chat.c
index 0740229163dd8ca54f2c1be2d23bcab6ffaad6e6..788c42bdea904c721b558d1a02c3001402117158 100644 (file)
--- a/chat/chat.c
+++ b/chat/chat.c
@@ -1,7 +1,32 @@
+/* SPDX-License-Identifier: MIT */
 /*
  *     Chat -- a program for automatic session establishment (i.e. dial
  *             the phone and log in).
  *
+ * This version is Copyright 1995-2024 Paul Mackerras <paulus@ozlabs.org>
+ * based on the original public-domain version by Karl Fox.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the “Software”), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
  * Standard termination codes:
  *  0 - successful completion of the script
  *  1 - invalid argument, expect string too large, etc.
@@ -11,7 +36,6 @@
  *  5 - the second string declared as "ABORT"
  *  6 - ... and so on for successive ABORT strings.
  *
- *     This software is in the public domain.
  *
  * -----------------
  *     22-May-99 added environment substitutuion, enabled with -E switch.
@@ -182,7 +206,7 @@ int n_aborts = 0, abort_next = 0, timeout_next = 0, echo_next = 0;
 int clear_abort_next = 0;
 
 char *report_string[MAX_REPORTS] ;
-char  report_buffer[256] ;
+char  report_buffer[4096] ;
 int n_reports = 0, report_next = 0, report_gathering = 0 ; 
 int clear_report_next = 0;
 
@@ -609,7 +633,7 @@ void terminate(int status)
        int c, rep_len;
 
        rep_len = strlen(report_buffer);
-       while (rep_len + 1 <= sizeof(report_buffer)) {
+       while (rep_len + 1 < sizeof(report_buffer)) {
            alarm(1);
            c = get_char();
            alarm(0);
@@ -1344,10 +1368,10 @@ int get_string(register char *string)
     char temp[STR_LEN];
     int c, printed = 0, len, minlen;
     register char *s = temp, *end = s + STR_LEN;
-    char *logged = temp;
+    char *s1, *logged = temp;
 
     fail_reason = (char *)0;
-    string = clean(string, 0);
+    string = s1 = clean(string, 0);
     len = strlen(string);
     minlen = (len > sizeof(fail_buffer)? len: sizeof(fail_buffer)) - 1;
 
@@ -1357,12 +1381,14 @@ int get_string(register char *string)
     if (len > STR_LEN) {
        msgf("expect string is too long");
        exit_code = 1;
+       free(s1);
        return 0;
     }
 
     if (len == 0) {
        if (verbose)
            msgf("got it");
+       free(s1);
        return (1);
     }
 
@@ -1410,6 +1436,7 @@ int get_string(register char *string)
                    strftime (report_buffer, 20, "%b %d %H:%M:%S ", tm_now);
                    strcat (report_buffer, report_string[n]);
 
+                   free(report_string[n]);
                    report_string[n] = (char *) NULL;
                    report_gathering = 1;
                    break;
@@ -1419,8 +1446,10 @@ int get_string(register char *string)
        else {
            if (!iscntrl (c)) {
                int rep_len = strlen (report_buffer);
-               report_buffer[rep_len]     = c;
-               report_buffer[rep_len + 1] = '\0';
+               if ((rep_len + 1) < sizeof(report_buffer)) {
+                   report_buffer[rep_len]     = c;
+                   report_buffer[rep_len + 1] = '\0';
+               }
            }
            else {
                report_gathering = 0;
@@ -1439,6 +1468,7 @@ int get_string(register char *string)
 
            alarm(0);
            alarmed = 0;
+           free(s1);
            return (1);
        }
 
@@ -1455,6 +1485,7 @@ int get_string(register char *string)
                alarmed = 0;
                exit_code = n + 4;
                strcpy(fail_reason = fail_buffer, abort_string[n]);
+               free(s1);
                return (0);
            }
        }
@@ -1486,6 +1517,7 @@ int get_string(register char *string)
 
     exit_code = 3;
     alarmed   = 0;
+    free(s1);
     return (0);
 }